Source: https://patents.google.com/patent/JP2013537064A/en
Timestamp: 2020-02-19 20:19:59
Document Index: 115950358

Matched Legal Cases: ['Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'art 7', 'art 8', 'art 88', 'art 50', 'art 39', 'art 39']

JP2013537064A - Surgical nail - Google Patents
JP2013537064A
JP2013537064A JP2013528270A JP2013528270A JP2013537064A JP 2013537064 A JP2013537064 A JP 2013537064A JP 2013528270 A JP2013528270 A JP 2013528270A JP 2013528270 A JP2013528270 A JP 2013528270A JP 2013537064 A JP2013537064 A JP 2013537064A
JP2013528270A
JP2013537064A5 (en
オベレス，トム
ヴァルター，ブルーノ
イェーガー，マルティン
アンデル−マット，ダニエル
2011-09-07 Application filed by シンセス ゲゼルシャフト ミット ベシュレンクテル ハフツングＳｙｎｔｈｅｓ Ｇｍｂｈ filed Critical シンセス ゲゼルシャフト ミット ベシュレンクテル ハフツングＳｙｎｔｈｅｓ Ｇｍｂｈ
2013-09-30 Publication of JP2013537064A publication Critical patent/JP2013537064A/en
2014-10-02 Publication of JP2013537064A5 publication Critical patent/JP2013537064A5/ja
A surgical nail for the treatment of fractured bones extends from a rear end to a tip along a longitudinal axis and includes a rear end lock aperture and a front end lock aperture, the rear end lock aperture being laterally at the rear end. A rear end adapted and configured to be connected to a rear end aiming guide, wherein the front end lock aperture is disposed at a rear end of the nail body and the rear end of the nail body, penetrating the front end portion in a lateral direction; A connecting element and a tip connecting element provided at the tip of the nail body and adapted and configured to be connected to a tip aiming guide.
This application is based on US Provisional Patent Application No. 61 / 381,264 (filing date: September 9, 2010, name: “Surical Nail”), US Provisional Patent Application No. 61 / 476,597 (filing date: 2011). April 18, 1980, Name: “Locking Clavicle Nail”), and US Provisional Patent Application No. 61 / 498,892 (Filing Date: June 20, 2011, Name: “Surgical Nail”), and US Provisional Patent Claims priority to Application No. 61 / 500,297 (filing date: June 23, 2011, name: “Clavicle Nail with Lateral Expanding and Acted Portion”). The entire disclosure is incorporated herein by reference.
The present invention relates primarily to surgical nails, and more particularly to clavicle nails. The clavicle nail includes a proximal connecting element and a distal connecting element for connecting the aiming guide to the nail body.
Clavicle (eg, clavicle) fractures account for 5-7% of adult fractures, of which 80-85% occur in the middle third of the clavicle.
The structure around the clavicle is extremely important, the medullary canal is thin, and the clavicular bone stock is limited, so clavicular fractures can be difficult to treat. In the treatment of clavicle fractures, surgical nails are inserted into the bone and the fractured portions of the bone are fixed together. A set screw can be inserted into these sections to secure the surgical nail therein. However, in some cases, it may be difficult to determine the position of the stop hole in the nail with high accuracy.
The present invention relates to surgical nails. By using the surgical nail, the user can check the alignment of the guide hole of the distal aiming arm attached to the distal end of the surgical nail when inserting the surgical nail into the bone In addition, the alignment can be corrected if necessary.
The present invention relates to surgical nails, and more particularly to clavicle nails. The nail includes a nail body. The nail body extends from a proximal end to a distal end along a longitudinal axis and includes one or more proximal lock apertures and one or more distal lock apertures. In addition, the surgical nail includes a proximal rod. The proximal rod has a length L c, proximally to said extending from the proximal end of the nail body to the longitudinal axis substantially coaxial. The proximal rod is adapted to connect a proximal aiming guide to the surgical nail. The proximal rod may have a circular or polygonal cross section. In addition, the surgical nail may also include a distal rod. The distal rod extends substantially coaxially from the distal end of the nail body in the distal direction and from the distal end of the nail body. The distal rod may have a circular or polygonal shape (eg, a hexagonal cross section). Alternatively, the distal end of the nail body can be configured as a cavity that extends into the nail body. The cavity may be provided with an inner thread or the cavity may be configured as a bayonet socket.
As some advantages of a surgical nail according to an exemplary embodiment of the present invention that includes a proximal rod that extends substantially coaxially from the proximal end of the nail body, the proximal rod causes the proximal aiming guide to move to the nail. The nail body can be inserted far into the bone until it can be connected to the body and one or more distal locking apertures protrude from the distal opening of the through-hole in the bone. Because of these advantages, for example, by inserting a drill bit into the guide hole of the distal aiming arm and into the corresponding distal lock aperture in the nail body, the distal bit attached to the nail It becomes possible to confirm the position and alignment of the guide hole of the aiming arm. Therefore, if necessary, the alignment of the distal aiming arm can be corrected.
In one exemplary embodiment of the surgical nail, the cross-sectional area of the proximal rod is not greater than the cross-sectional area of the nail body. The nail body may have a maximum diameter D and the proximal rod may have a maximum diameter d <D. Such a configuration of the proximal rod advantageously makes it possible to push the proximal rod into the hole in the bone created before or during the insertion of the surgical nail into the bone, This allows the surgical nail to be inserted into the bone as long as the distal lock aperture protrudes from the bone and the alignment of the guide hole in the distal aiming arm and the distal lock aperture can be verified. It becomes possible to do. Preferably, the proximal rod is integral with the nail body.
In a further exemplary embodiment of the surgical nail, the one or more distal lock apertures are disposed within a distal portion of the nail body. The distal portion of the nail body has a length L D. The length L D is measured from the distal end of the nail body. The proximal rod extends a length L c from the proximal end of the nail body. The length L c is L D above. Therefore, the distal locking aperture extends distally beyond the distal surface of the bone to visually align the guide hole in the distal aiming guide and the distal locking aperture in the surgical nail. As can be seen, the surgical nail can be inserted into the bone. Further, the one or more proximal lock apertures are disposed within a proximal portion of the nail body. Wherein the proximal portion of the nail body has a length L p. The length L p is measured from the proximal end of the nail body. The length L P may be equal to the length L D, or may be different from the length L D.
In another exemplary embodiment of the surgical nail, the minimum value of the ratio of L c to L p is 1.0, but more preferably the minimum value is 3.0. A typical value for the ratio of L c to L D may be approximately 4. The length L D of the distal portion of the nail body is at most about 40 mm, but is preferably at most about 10 mm. The proximal rod length Lc is at least about 10 mm, but preferably at least about 60 mm. Further, the maximum value of the ratio between L c and L D is approximately 6.0, but more preferably the maximum value is approximately 4.5.
In another exemplary embodiment of the surgical nail, the distal connection element for connecting a distal aiming guide to the surgical nail is a longitudinal axis thereof distally from the distal end of the nail body. And configured as a distal rod extending substantially coaxially. This configuration allows the distal aiming arm to be attached to the nail by sliding the aiming arm onto the distal rod. It said distal rod can have a length L x. The length L x is preferably longer than L P and L D. The length L x of the distal rod, the may be equal to the length L c of the proximal rod, or the may be different from the length L c of the proximal rod. Preferably, the cross-sectional area of the distal rod is not greater than the cross-sectional area of the nail body. Preferably, the nail body has a maximum diameter D and the distal rod has a maximum diameter d ≦ D.
In another exemplary embodiment of the surgical nail, the angle at which the one or more distal lock apertures may be offset with respect to the proximal lock aperture. Suitably, the offset angle relative to the proximal lock aperture may be in the range of 10 degrees to 90 degrees (eg, 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees). , 90 degrees). Preferably, the offset angle is 90 degrees. The clavicle nail can be inserted from the inner end of both the left and right sides of the patient's body and the outer end of the clavicle.
In a further exemplary embodiment of the surgical nail, the distal lock aperture and the proximal lock aperture may extend from one another along substantially the same plane.
In yet another exemplary embodiment of the surgical nail, the nail body is bent or curved. Suitably, the nail body may be curved on the same surface so as to have a specific shape (preferably an S-shape). Alternatively, the nail body may be curved on different sides, and preferably double curved on different sides.
The nail body between the proximal lock aperture and the distal lock aperture can be pre-bent in a bent shape to better accommodate the clavicle anatomy. Alternatively, the nail body may be flexible, or the nail may be configured by a plurality of segments.
In a further exemplary embodiment of the surgical nail, the cross-sectional area of the nail body may be substantially triangular.
In a further exemplary embodiment of the surgical nail, the nail body may include a substantially flat cross section. The area of the nail body that includes the flat cross section may be helical. The helical shape can be easily accommodated by the clavicle shape, and the insertion of the nail body into the clavicle can be improved. The nail body may be bent into a spiral shape, alternatively or additionally, the nail body may be made into a spiral shape.
In a further exemplary embodiment, the nail body may include a region having a substantially triangular cross section and a region having a flat cross section.
In a further exemplary embodiment of the surgical nail, the one or more proximal lock apertures and the one or more distal lock apertures each have a central axis. The proximal rod and the distal rod may each include a notch. The notch is preferably configured as a through hole having a hole axis. The hole axis of the through hole in the proximal rod is parallel to the central axis of the one or more proximal lock apertures, and the hole axis of the through hole in the distal rod is the distal lock. Parallel to the central axis of the aperture so that a proximal aiming guide and a distal aiming guide can each be attached to the surgical nail in an alignment configuration. The distal lock aperture is provided at 90 degrees to the proximal lock aperture so that the clavicle nail can be inserted into the clavicle both from the left and right sides of the patient body for both intermediate and lateral insertion. Can be used.
In a further exemplary aspect of the present invention, one or each of the proximal connecting element and the distal connecting element is removably connected to the nail body. Suitably, the proximal connecting element is removably connected to the nail body and the distal connecting element is integrated with the nail body. Such removable connections can be made by press-fitting, screwing, bayonet-type connections, the use of welding (specifically laser welding) or the bonding of the connecting elements to the nail body. Such removable connections eliminate the sharp edges that result from cutting of the proximal and / or distal connecting elements and also minimize the possibility of soft tissue inflammation. be able to. Such a removably connectable connection element may comprise a material different from the nail body or may comprise the same material as the nail body.
According to another exemplary aspect of the invention, a surgical reamer is provided. The surgical reamer is used to create holes in the clavicle from anterior medial to posterior lateral or from posterior lateral to anterior medial.
If the medullary canal in the clavicle is too small for the nail, it may be necessary to narrow the tube to a larger diameter to accommodate the nail. When reaming, a lightweight flexible reamer is used to move a length of reamer along the medullary canal. In some reamers, the diameter of the reaming head can be made larger than the diameter of the reaming shaft. Thus, when extruding the reamer through the tube, the shaft can collapse, and as a result, the accuracy in orienting the reamer can be reduced. If the reaming accuracy is reduced, the risk of damage to the arteries, veins or nerves or even the lungs as a result of the reamer's departure from the tube via the bone side. One method of guiding a drill or reamer in trauma surgery is to place a K wire and then overdrill the hole obtained by the K wire with a hollow reamer or drill. The K wire can be placed in the bone with high accuracy. This is because the ratio of diameter to length is such that sufficient flexibility is obtained and relatively small collapse occurs. In the case of the clavicle, it is necessary to narrow the relatively thin tube to a diameter of approximately 3-4 mm. In order to guide the hollow reamer on the K-wire, the wall thickness needs to be very thin, especially when initial flexibility is required.
The reamer according to an exemplary embodiment of the present invention is a K wire having a reamer head.
The reamer may have a plurality of reamer heads. The plurality of reamer heads are arranged from the front end to the rear end. The reamer head makes it possible to increase the diameter from the front end to the rear end.
The tip may be a penetration or insertion end for entering the K-wire into the bone. The tip may have a tip for drilling a hole in the bone. The tip may have a sharp shape. Alternatively, the tip may be circular and include a feature cutting groove therein.
The position of the reamer head or first reamer head on the K-wire may be selected such that the K-wire posterior end protrudes from the posterior end of the reamed bone.
According to a further aspect of the invention, a kit is provided. The kit includes a surgical nail according to the present invention, a proximal aiming arm, and a distal aiming arm. An advantage of the kit is the attachment of proximal and distal aiming arms so that the nail is removed when a single aiming arm is removed from one end and the aiming arm is attached to the other end of the nail. Displacement in the bone is avoided.
In another exemplary embodiment, the kit further comprises a reamer according to the present invention.
According to a further aspect of the invention, a method for bone fixation (especially the clavicle) is provided. The bone fixation uses a surgical nail according to the present invention,
a. Inserting the surgical nail (especially a clavicle nail) into the fractured bone after fragment alignment at an acute angle relative to the longitudinal axis of the bone, the proximal opening in the first bone fragment and A distal opening in the two bone fragments is formed in the bone;
d. Drilling the proximal stop hole into the bone by guiding a drill bit with the proximal aiming arm;
e. Advancing the proximal set screw into the bone via a guide hole in the proximal aiming arm;
f. Drilling the distal stop hole into the bone by guiding a drill bit with the distal aiming arm;
g. Advancing the distal set screw through the guide hole in the distal aiming arm into the bone;
h. Removing the proximal and distal aiming arms;
One advantage of the method is that each aiming guide can be attached to one end of the nail body so that each aiming guide only needs to travel a short distance relative to each lock aperture. Such a proximal and distal aiming arm configuration allows alignment of the guide hole in the aiming arm with the lock aperture of the nail body (especially when bending or twisting the nail during insertion into the bone) Alignment with the distal guide hole with respect to the distal lock aperture) can be obtained with high accuracy. Another advantage of the method is that by attaching both the proximal and distal aiming arms, the nail is removed when a single aiming arm is removed from one end and the aiming arm is attached to the other end of the nail. Displacement in the bone is avoided.
Preferably, the method is used for fixation of a fractured clavicle. Thereby, in the preferred first embodiment of the method, the clavicle nail is inserted into the clavicle from the front inner side to the rear outer side. The clavicle nail is inserted into the clavicle such that a proximal end of the nail body is disposed at an inner end of the clavicle and a distal end of the nail body is disposed at an outer end of the clavicle. Is done. Preferably, prior to insertion of the nail, after anterior medial to posterior lateral segment alignment, at an acute angle to the medullary canal of the clavicle (preferably by using a surgical reamer according to the invention) Holes can be formed in the clavicle.
In the second embodiment, the clavicle nail may be inserted from the rear outer side to the front inner side. In this case, with the proximal end of the nail body disposed at the outer end of the clavicle and the distal end of the nail body disposed at the inner end of the clavicle, the clavicle nail is placed in the clavicle. Insert into.
Preferably, prior to insertion of the nail, after posterior medial to anterolateral fragment alignment, at an acute angle to the medullary canal of the clavicle (preferably by using a surgical reamer according to the invention) A hole is formed in the clavicle.
In another exemplary embodiment, the method includes pushing the surgical nail distally into the bone such that the one or more distal locking apertures protrude from the surface of the bone; Checking the alignment of the guide hole in the distal aiming arm with at least one of the distal locking apertures of the surgical nail, such that the proximal end of the nail body protrudes from the surface of the bone Further, pulling the nail body of the surgical nail proximally. An advantage of this embodiment of the method is that after inserting the surgical nail into the bone, check the alignment of the guide hole of the distal aiming arm attached to the distal end of the surgical nail and if necessary In this case, the alignment can be corrected.
In a further exemplary embodiment, the method includes cutting a portion of the proximal and distal rods, wherein the proximal and distal rods are respectively proximal and distal surfaces of the bone. Extending in a proximal direction and a distal direction beyond. Alternatively or additionally, the method comprises removing part of one or each connecting element. The one or each connecting element is removably connected to the nail body.
In a further exemplary embodiment, the method further comprises placing the end cap on an outer thread at the proximal end of the nail body.
In an exemplary embodiment of a method for fixing a fractured clavicle by inserting a clavicle nail from anterior medial to posterior lateral, the method comprises:
1) selecting an appropriate clavicle nail, particularly for the length and diameter of the surgical nail and the distance between the proximal and distal lock apertures;
3) Step of inserting the clavicle nail into the fracture clavicle after fragment alignment from anterior medial to posterior lateral where two small skin incisions are required and the distal lock aperture is Inserting the clavicle nail laterally such that a distal portion including it protrudes from an outer end of the clavicle;
4) placing the distal aiming arm on the distal rod of the clavicle nail;
5) Position the distal aiming arm so that the distal aiming arm is adjacent to the shoulder at the transition between the distal rod with a smaller diameter d and the nail body with a diameter D> d. Tightening the fixation screw to lock the distal aiming arm to the clavicle nail;
6) Engage the distal aiming arm fixation screw into a notch in the distal rod of the clavicle nail to provide rotational and axial alignment relative to the corresponding distal lock aperture of the clavicle nail. Obtaining step;
7) inserting the protective sleeve into a guide hole in the distal aiming arm;
8) checking the alignment of the guide hole in the distal aiming arm and the drill bit that passes through the protective sleeve and into each of the distal lock apertures, for this control step, Extruding the clavicle nail farther laterally through the clavicle such that the distal portion including the distal locking aperture protrudes from an outer end of the clavicle;
9) After removing the protective sleeve and the drill bit, as long as the outer thread protrudes from the inner end of the clavicle using the insertion handle at the proximal end of the nail body, the distal aiming Attaching the nail body of the clavicle nail to which the arm is attached remotely to the clavicle red in the middle;
10) placing the proximal aiming arm over the proximal connection of the clavicle nail;
11) locking the proximal aiming arm with the fixing screw;
12) drilling the proximal stop hole into the clavicle by guiding a drill bit with a protective sleeve inserted into each guide hole in the proximal aiming arm;
13) positioning the proximal set screw through a protective sleeve inserted into each guide hole in the proximal aiming arm;
14) drilling the distal stop hole into the clavicle by guiding a drill bit with a protective sleeve inserted into each guide hole in the distal aiming arm;
15) positioning the distal set screw through a protective sleeve inserted into each guide hole in the distal aiming arm;
16) removing said proximal and distal aiming arms;
17) cutting the distal rod at the bone interface and cutting the proximal rod at the proximal end of the back of the outer thread of the nail body;
18) placing the end cap on an outer thread of the nail body to protect the proximal end of the nail body from bone ingrowth;
19) closing the intermediate and lateral incisions in the patient body.
According to an exemplary embodiment, the clavicle nail is.
ii. The set screw is attached to the outer thread at the proximal end of the nail body so as to avoid rotation of the clavicle nail during attachment of the removal instrument. Need to be held in place,
iii. Removing the set screw;
iv. The clavicle nail can be removed from the clavicle by removing the clavicle nail from the clavicle.
Hereinafter, some embodiments of the present invention will be described by way of example with reference to the accompanying drawings.
1 shows a perspective view of a first embodiment of a surgical nail according to the present invention. FIG. FIG. 2 is a side view of a first embodiment of the surgical nail of FIG. 1 shows a perspective view of an embodiment of a kit according to the invention. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. 1 shows a perspective view of a bone fixation method according to the present invention. FIG. FIG. 4 shows a perspective view of removal of a surgical nail according to the present invention. FIG. 4 shows a perspective view of removal of a surgical nail according to the present invention. FIG. 4 shows a perspective view of removal of a surgical nail according to the present invention. FIG. 4 shows a perspective view of removal of a surgical nail according to the present invention. Fig. 4 shows a cross-section through a surgical nail and a distal aiming arm of a further embodiment of a kit according to the invention. Figure 2 shows a cross-sectional view of an embodiment of a reamer according to the present invention. FIG. 29 shows an enlarged view of the front of the reamer embodiment of FIG. FIG. 29 shows an enlarged view of the rear of the reamer embodiment of FIG. FIG. 29 illustrates application of the reamer embodiment of FIG. FIG. 29 illustrates application of the reamer embodiment of FIG. FIG. 29 illustrates application of the reamer embodiment of FIG. FIG. 29 illustrates application of the reamer embodiment of FIG. Figure 3 shows a perspective view of a second embodiment of a surgical nail according to the present invention. Figure 3 shows another perspective view of a second embodiment of a surgical nail according to the present invention. Figure 7 shows a perspective view of another end of a second embodiment of a surgical nail according to the present invention. FIG. 6 shows a perspective view of a third embodiment according to the present invention. Figure 7 shows a perspective view of a fourth embodiment of a surgical nail according to the present invention. FIG. 40 shows a side view of the surgical nail of FIG. 39. Figure 7 shows a perspective view of a fifth embodiment of a surgical nail according to the present invention. FIG. 42 shows an enlarged perspective view of a portion of the surgical nail of FIG. 41. Figure 3 shows a perspective view of a second embodiment of a reamer according to the present invention. Figure 6 shows a perspective view of a third embodiment of a reamer according to the present invention. FIG. 45 shows a perspective view of another embodiment of the reamer of FIG. 44. The side view of 4th Embodiment of the reamer of this invention is shown. FIG. 47 shows an enlarged cross-sectional view of the proximal end of the reamer of FIG. 46. Figure 46 shows a perspective view of the reamer of Figure 46 connected to a surgical nail according to the present invention. FIG. 3 shows a perspective view of a system according to another exemplary embodiment of the present invention. Figure 7 shows a perspective view of a sixth embodiment of a surgical nail according to the present invention. FIG. 50 shows a perspective view of a sixth embodiment of the surgical nail of FIG. 50 with the fixation element shown in situ. FIG. 6 shows a perspective view of an end cap according to another exemplary embodiment of the present invention. FIG. 53 shows another perspective view of the end cap of FIG. 52. FIG. 53 shows a longitudinal cross-sectional view of the end cap of FIG. 52. FIG. 53 shows a side view of the end cap of FIG. 52 and a surgical nail according to an exemplary embodiment of the present invention. FIG. 56 shows a side view of the end cap of FIG. 52 and a surgical nail according to another exemplary embodiment of the present invention. FIG. 6 shows a cross-sectional view of an end cap according to another embodiment of the invention. FIG. 58 shows a perspective view of the end cap of FIG. 57.
The invention can be further understood with reference to the following description and the appended drawings. In the drawings, similar elements are denoted by similar reference numerals. The present invention relates to the treatment of fractures, and in particular to a device for fixing clavicle fractures. The nail described in the exemplary embodiment of the present invention can be inserted along the length of the clavicle to fix the fracture. The nail can be secured in the bone using a sighting device, whereby a guide drilling instrument and / or a bone anchoring element is guided through the bone and moved into the corresponding lock aperture of the nail Let It is noted that the terms “proximal” and “distal” as used herein refer to a direction (proximal) towards and away from the user of the (distal) device (distal). I want. Further, as used herein, the terms “middle” and “lateral” refer to the direction toward the midline of the patient body to be nail transplanted (middle) and the direction away from the midline (lateral). Note that it points.
As shown in FIGS. 1 to 22, the system and method according to the first embodiment of the present invention includes a clavicle nail 1. The clavicle nail 1 is set to a size and shape so as to be inserted into the clavicle 9 to fix the fracture. The nail 1 can be inserted into the clavicle 9 using the handle 15, and a bone anchoring element (eg, a set screw 24) is inserted through the clavicle 9 to insert the proximal lock aperture 5 and the distal lock aperture 6 of the nail 1. By placing it in, the nail 1 can be fixed in the clavicle 9. The system may further include a proximal aiming device 13 and a distal aiming device 14 as shown in FIG. By attaching the proximal aiming device 13 and the distal aiming device 14 to the nail 1, alignment between the drill and / or bone fixation element and the corresponding one of the proximal lock aperture 5 and the distal lock aperture 6 is achieved. can get. In a further embodiment, the system may further include a reamer 30 as shown in FIGS. The reamer 30 is used for drilling a hole 32 in the clavicle 9 that is the accommodation destination of the nail 1.
As shown in FIGS. 1 to 3, the nail 1 includes a nail body 12. The nail body 12 extends from the proximal end 3 to the distal end 4 along the longitudinal axis 2. The proximal aiming arm 13 and the distal aiming arm 14 are respectively connected to the nail body 12 by the proximal connecting element 28 provided at the proximal end 3 and the distal connecting element 27 provided at the distal end 4. Connect. The proximal lock aperture 5 and the distal lock aperture 6 penetrate laterally through the adjacent nail body 12 of the proximal end 3 and the distal end 4, respectively, thereby locking the nail body 12 to the clavicle 9. To do. Once the nail body 12 is secured within the clavicle 9, the proximal connecting element 28 and the distal connecting element 27 can be cut and / or removed from the nail body 12.
The nail body 12 can be sized and shaped to be inserted into the medullary canal of the clavicle 9. The size of the medullary canal can be tailored to the particular patient anatomy and the amount of flexibility required due to the clavicle shape. For example, if the patient's clavicle diameter is small, the selected nail body 12 will also have a smaller diameter. In another example, if the patient's clavicle is more curved than the average clavicle, a smaller diameter nail body 12 is selected to provide additional flexibility. In an exemplary embodiment, a diameter of 2.5 mm to 5.0 mm is possible. For example, in the exemplary embodiment, the diameter of the nail body 12 may be 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, or 5.0 mm.
There are other factors that affect the flexibility of the nail body 12. For example, the nail body 12 can be made from a material (eg, titanium, stainless steel, titanium alloy) having a desired Young's modulus or bending stiffness. Other factors that affect flexibility include flat area geometry (eg, shape: circular, square, flat, egg shape or diameter). One skilled in the art can combine one or more of these elements to obtain the desired flexible nail.
The screws that can be used with the nail body 12 can also vary depending on the diameter of the nail body 12. For example, in the embodiment using the nail body 12 having a diameter of 2.5 mm, the diameter of the screw may be up to 2.0 mm. In an embodiment where the diameter of the nail body 12 is 3.0 mm, the diameter of the screw may be up to 2.4 mm. In an embodiment where the diameter of the nail body 12 is 3.5 mm or more, the diameter of the screw may be up to 2.7 mm. However, those skilled in the art will appreciate that other sizes and diameters are possible.
As can be seen from FIG. 3, the clavicle 9 into which the nail 1 is inserted has a curved shape similar to the “S” shape. This curvilinear shape can be described as a flat “S” or double curve. In this regard, the nail body 12 may be shaped such that it can be inserted into the medullary canal of the clavicle 9. The nail body 12 can be set in a curved shape so as to correspond to the curvature of the medullary canal of the clavicle 9. The nail body 12 has an initial undeformed shape. The initial undeformed shape is configured to correspond to the shape of the clavicle 9 to which the nail body 12 is placed when the nail body 12 is placed at a desired position in the clavicle 9. Therefore, the deformation of the nail body 12 at the time of insertion (for example, when a part of the nail body 12 passes a portion of the clavicle 9 having a different shape from the arrangement destination of the portion of the nail body 12) is temporary. When the nail body 12 reaches the final position, the nail body 12 returns to the original undeformed shape. The user (e.g., surgeon) then uses the aiming device calibrated to the initial undeformed shape of the nail body 12 to accurately determine the position of the proximal lock aperture 106 and the distal lock aperture 108. Can do. Depending on the entry and exit points of the nail, the curvature can be C-shaped. Based on the anatomical data, the radius of curvature is predicted to be in the range of 90 to 150 mm. The proximal end 3 of the body 12 also includes a threaded portion 23. The thread 23 may further be used to fix the nail 1 in the clavicle 9 and / or assist in removing the nail body 12 if necessary. Also, after fixing the body 12 in the clavicle 9, The cap 25 can be placed on the threaded portion 23 as desired.
By forming the nail body 12 from an elastic material, a certain degree of bending is possible when the nail 1 is inserted into the bone, and after the nail body 12 is completely inserted into a desired position in the bone, the nail body It is also possible to return 12 to the original curved shape. For those skilled in the art, the term “flexible” as used in this context is a constant level that is sufficient to deform the nail body 12 without damaging the clavicle 9 when the nail body 12 is inserted into the medullary canal. Understand the meaning of flexibility.
The proximal lock aperture 5 passes through the proximal portion 16 of the nail body 12 at a position spaced from the proximal end 3 of the nail body 12 by a distance LP. The distal lock aperture 6 penetrates the distal portion 17 of the nail body 12 at a distance LD from the distal end 4 of the nail body 12. As will be appreciated by those skilled in the art, the proximal lock aperture 5 and the distal lock aperture 6 are partially circular (or any other suitable shape) and extended at an angle of 45 degrees to 270 degrees to create a nail You may make it open with respect to the exterior of the main body 12. In particular, the proximal lock aperture 5 and the distal lock aperture 6 can be formed as substantially U-shaped or C-shaped grooves 37 that extend through the surface of the nail body 12 and these grooves Each 37 has a central shaft 38. A bone fixation element can be inserted along the central axis 38. The central axis 38 can be offset from the longitudinal axis 2 and can be set substantially perpendicular to the longitudinal axis 2. The groove portion 37 has a depth T and a width W. The width W is equal to twice the radius R of the partially circular lock apertures 5 and 6. Therefore, the depth T is larger than the radius R, but smaller than the shaft diameter of the set screw 24, so that the set screw 24 (FIG. 15) having a shaft diameter corresponding to the width W of the groove 37 is the central shaft 38. And fit into the groove 37.
In the first embodiment, the nail body 12 includes two proximal lock apertures 5 and two distal lock apertures 6. The central axes 38 of the two proximal lock apertures 5 are arranged at an angle of, for example, 90 degrees with respect to the central axes 38 of the two distal lock apertures 6. The two distal lock apertures 6 pass through opposite sides of the nail body 12 so that the central axis 38 of the two distal lock apertures 6 is on the opposite side of the longitudinal axis 2 of the nail body 12. And are parallel to each other. In addition, the two distal lock apertures 6 can be spaced longitudinally by a distance as shown in FIG. Similarly, the two proximal lock apertures 5 can pass through opposite sides of the nail body 12 so that the central axis 38 of the proximal aperture 5 is opposite the longitudinal axis 2 of the nail body 12. Located above and substantially parallel to each other. In addition, the two proximal lock apertures 5 can be spaced from each other by a distance B in the longitudinal direction. In one embodiment, distance B may be equal to distance A. In another embodiment, the distance B may be different from the distance A, which is the distance between the distal locking apertures 6 when spaced apart from each other. The central axis 38 of the distal lock aperture 6 is positioned close to the outer end of the clavicle 9 and extends in the sagittal direction with the central axis 38 of the proximal lock aperture 5 close to the inner end 4 of the clavicle 9 and back and forth The clavicle nail 1 can be inserted into the clavicle 9 so as to extend in the direction. For example, in a preferred embodiment, the clavicle nail 1 is inserted from the front inner side to the rear outer side so that the proximal lock aperture 5 is positioned in the middle with the distal lock aperture 6 positioned laterally. However, those skilled in the art will appreciate that the nail 1 can be inserted such that the proximal locking aperture 5 is positioned laterally while the distal locking aperture 6 is positioned in the middle.
The proximal connecting element 28 may include the proximal rod 7. The proximal rod 7 extends in the proximal direction from the proximal end 3 of the nail body 12 to the proximal end 51. The proximal end 51 is substantially coaxial with the longitudinal axis 2 of the nail body 12. The proximal end 51 of the proximal rod 7 is adapted and configured to be connected to a handle 15 for inserting the nail 1 into the clavicle 9. The proximal end portion 51 may be polygonal, for example, so as to mesh with a part of the handle 15. The distal connecting element 27 includes the distal rod 8. The distal rod 8 extends from the distal end 4 to the distal end 52 in the distal direction. The distal end 52 is substantially coaxial with the longitudinal axis 2 of the nail body 12. The insertion of the clavicle nail 1 into the clavicle 9 can be facilitated by making the distal end 52 of the distal rod 8 conical. Proximal rod 7 and distal rod 8 may each include a substantially cylindrical portion. By making the diameter d of the substantially cylindrical portion smaller than the diameter D of the nail body 12, the proximal rod 7 and the shoulder 18 where the distal rod 8 and the nail body 12 meet are formed. The Alternatively, one or both of the proximal rod 7 and the distal rod 8 may have a non-circular cross section (eg, a polygonal cross section). This non-circular cross section is smaller than the cross section of the nail body 12 so that the proximal rod 7 and the distal rod 8 can be easily inserted into a hole 32 formed to receive the nail 1 in the collarbone 9. Is possible.
The proximal rod 7 and the distal rod 8 each include a notch 29 that receives the tip 40 of the fixation screw 19. Fixing screw 19 can be used to secure proximal aiming arm 13 and distal aiming arm 14 to proximal rod 7 and distal rod 8, respectively. Each notch 29 may be configured as a through-hole 33 that penetrates the proximal rod 7 and the distal rod 8 laterally. Further, the through hole 33 in the proximal rod 7 extends along a hole axis parallel to the central axis 38 of the proximal lock aperture 5, and the through hole 33 in the distal rod 8 is connected to the distal stop hole 6. Extending along a hole axis parallel to the central axis 38 of the. The proximal rod 7 has a length L c. The length L c extends from the proximal end 3 of the nail body 12 to the proximal end 51. The length L c may be, for example, approximately four times the length L D of the distal portion 17 where the distal lock aperture 6 is disposed. The distal rod 8 has a length L x. The length L x extends from the distal end 4 of the nail body 12 to the distal end 52 and is, for example, approximately twice the length L p of the proximal portion 16 where the proximal lock aperture 5 is located. possible. In another embodiment, the length L x of the distal rod 8 can be substantially equal to the length L c of the proximal rod 7.
35 and 36 show a nail 1a according to the second embodiment of the present invention. The nail 1a is substantially similar to the nail 1 as described above and includes a nail body 12a with a distal connecting element 27a and a proximal connecting element 28a. The distal connecting element 27a and the proximal connecting element 28a can be formed, for example, as a rod-shaped distal portion 8a and a proximal portion 7a, respectively. It should be noted that the different parts have corresponding reference numerals.
In the nail 1a, the distal connecting element 27a and the proximal connecting element 28a are detachably connected to the nail body 12a. Removably connected distal connecting element 27a and proximal connecting element 28a are press fit into openings 100 and 101. Openings 100 and 101 are formed in the distal end 4a and the proximal end 3a, respectively. By press-fitting the connecting elements 27a and 28a and their respective ends 4a and 3a, these parts are held together by friction, thereby avoiding unintentional unintentional detachment.
FIG. 35 shows the proximal end 3a. The proximal end 3 a has an opening 100 that leads into the conduit 102. The proximal connecting element 28 a has a cylindrical proximal element connecting portion 103. The diameter of the proximal element connecting portion 103 is smaller than the diameter of the remaining portion of the proximal connecting element 28a. The size and shape of opening 100 and conduit 102 are sized and shaped to receive proximal element connection 103 therein and form the press fit. In this regard, the opening 100 and the conduit 102 are set in a circular shape and have a slightly smaller diameter than the diameter of the proximal element connection 103. Of course, as will be appreciated by those skilled in the art, other shapes and configurations of the proximal element connection 103 and opening 100 and conduit 102 may be used.
FIG. 36 shows the distal end 4a. The distal end 4 a has an opening 101 that continues into the conduit 104. The distal connection element 27 a has a cylindrical-shaped distal element connection portion 105. The diameter of the distal element connection 105 is the same as the diameter of the remaining part of the distal connection element 27a. The size and shape of the opening 101 and the conduit 104 are sized and shaped to receive the distal element connection 105 therein and form the press fit. In this regard, the opening 101 and the conduit 105 are circular in shape and have a slightly smaller diameter than the diameter of the distal element connection 105.
Of course, as those skilled in the art will appreciate, both the proximal element connection 103 and / or the distal element connection 105 and / or the openings 101 and 100 may have other shapes and configurations. Yes, conduits 102 and 104 can be utilized.
In an exemplary embodiment of the second embodiment, each portion of the nail 1a is made from the same material (eg, TAN). However, as will be appreciated by those skilled in the art, the nail 1a includes a nail body 12a made of TAN and a distal connecting element 27a and a proximal connecting element 28a made of titanium or any other suitable material. But you can. As will be appreciated by those skilled in the art, any combination of different materials or portions containing the same suitable material is possible.
The nail 1a has been described as having a press-fit distal and proximal connecting element. However, other modifications of the removable connection arrangement are possible. An example of such a modification is shown in FIG. In FIG. 37, the connecting portion 105a is threaded on the outside, and the opening 101a and the conduit 104a are threaded on the inside. In another modification (not shown), a bayonet type connection is used in the removable connection between the connection element and the nail body.
In other variations (not shown), the distal and proximal connecting elements are welded (eg, laser welded) or adhered to the nail body. In these variations, the element is connected to the nail body with a pre-defined breaking load.
As those skilled in the art will appreciate, the nail can be made using any combination of different variations of removable connections. For example, the distal connecting element can be press fit into the nail body and the proximal connecting element can be welded to the nail body to create a nail.
In the third embodiment shown in FIG. 38, nail 1b can be substantially similar to nails 1 and 1a as described above, but has a proximal connecting element 28b and a distal connecting element 27b. The proximal connecting element 28b is substantially similar to the proximal connecting element 28 as described for the first embodiment of the nail 1. The distal connecting element 27b is substantially similar to the distal connecting element 27a as described for the second embodiment of the nail 1a or one of the above modifications. That is, according to one of the modifications, the proximal connecting element 28b is integrated with the nail body 12b and the distal connecting element 27b is removably connected to the nail body 12b. For example, the distal connecting element 27b can be press fit into the nail body and removed using an instrument (not shown).
As will be described in more detail below, in this embodiment, the proximal connecting element 28b is excised after implantation and an end cap 25 is provided to cover all sharp edges resulting from the excision. Enables soft tissue protection. After placing the end cap 25, the distal end can be press fit and the distal connecting element 27b can be removed using an instrument (not shown).
In a fourth exemplary embodiment as shown in FIGS. 39-40, the nail 1c may be substantially similar to the nail 1 described above. Specifically, the nail 1c includes a nail body 12c including a proximal connecting element 28c and a distal connecting element 27c. The proximal connecting element 28c and the distal connecting element 27c can be formed, for example, as a rod-shaped proximal part 7c and a distal part 8c, respectively. Proximal rod 7c and / or distal rod 8c can be fitted to a portion of proximal aiming arm 13 and distal aiming arm 14 so that aiming arms 13 and 14 are relative to nail 1c. And avoid the situation of rotating. For example, the proximal rod 7c and the distal rod 8c can include flat surfaces 107c and 108c, respectively. The planes 107c and 108c extend along a part thereof and correspond to a part of the surface of the aiming arms 13 and 14.
The proximal connecting element 28c and / or the distal connecting element 27c may also include a groove 109. The groove 109 extends along the periphery of each of the distal end and the proximal end, thereby facilitating cutting of the proximal connecting element 28c and the distal connecting element 27c after implantation. Groove 109 may extend around rods 7c and 8c proximate proximal end 3c and distal end 4c of nail body 12c.
As shown in FIGS. 41-42, a nail 1d according to a further exemplary embodiment of the present invention may be substantially similar to any of the nails 1, 1a, 1b and 1c described above. However, the nail body 12d further includes a smaller diameter region 110. The region is overmolded with a suitable elastomer or polymer 112. This smaller diameter region 110 may extend along the nail body 12d between the proximal aperture 5d and the distal aperture 6d so that the proximal aperture 5d and the distal aperture 6d have a diameter of the nail body 12d. It penetrates the non-reduced regions 114 and 116. Thus, the unreduced regions 114 and 116 can extend along the proximal and distal portions of the nail body 12d. Region 110 has a larger diameter than regions 114 and 16, thereby increasing flexibility. For example, if the diameter of regions 114 and 116 is 2.5 mm, the diameter of the smaller region 110 may be between 2.0 mm and 2.4 mm. If the diameter of the regions 114 and 116 is 3.0 mm, the diameter of the smaller diameter region 110 may be between 2.0 mm and 2.9 mm. If the diameter of the regions 114 and 116 is 3.5 mm, the diameter of the smaller diameter region 110 may be between 2.0 mm and 3.4 mm.
To produce a nail 1d having a nail body 12d, the smaller diameter region 110 is formed of an elastomer and the polymer 112 is overmolded to surround the smaller diameter region 110. Elastomer or polymer 112 is a polymer or elastomer that is viscoelastic and biocompatible. Examples of suitable polymers are polyethylene and polyetheretherketone. Examples of suitable elastomers are polycarbonate urethane (PCU) and silicone. Other suitable polymers or elastomers may be used as long as the Young's modulus (E) is lower than the Young's modulus of the rest of the nail 1d. The overmolded elastomer or polymer 112, in addition to the function of supporting the flexibility of the nail 1d, causes bone growth in or on the nail body 12d that causes the nail 1d to become unremovable after surgery. It also has a function to avoid this.
50 and 51 show a nail 1e according to a sixth embodiment of the present invention. The nail 1e can be substantially similar to the nail 1 as described above and includes a nail body 12e with a distal connecting element 8e. The distal connecting element 8e extends from the distal end 4e. The distal connecting element 8e can be formed, for example, as a rod-shaped distal end. Note that the different parts are correspondingly labeled.
In a sixth embodiment, the proximal end features a proximal end lock aperture 5e and does not include a proximal connecting element. The proximal lock aperture 5e can penetrate the wall of the nail body 12e from the proximal end 3e of the nail body 12e so that the axis of the proximal lock aperture 5e is at an angle relative to the longitudinal axis of the nail 1e. Be placed. Thus, the bone anchoring element can be inserted into the proximal end 3e to secure the nail body 12e to the bone, eliminating the need for a proximal aiming guide for guiding the bone anchoring element via the proximal lock aperture 5e. Become. The angle with respect to the longitudinal axis of the nail body 12e may be between 10 degrees and 170 degrees. For example, the angles are approximately 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees. Degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 145 degrees, 150 degrees, 155 degrees, 160 degrees, It can be 165 degrees or 170 degrees. Similar to the other embodiments as described above, there is a relationship between the proximal lock aperture 5e and the distal lock aperture 6e. For example, with respect to a plane extending from the longitudinal axis, the axis defined by the proximal lock aperture 5e can be offset with respect to the axis defined by the distal lock aperture 6e. For example, the axis of the proximal lock aperture 5e can be perpendicular to the distal lock aperture 6e. Alternatively, the lock aperture may extend in the same plane. Similar to other embodiments as described above, the distal connecting element 8e is removably connected to the nail body 12e. The amount to remove the distal connecting element 8e can be any length selected by the user. For example, the removal amount may correspond to the amount of nail 1e that the user has determined is necessary for assisting the healing of the clavicle, which is the insertion destination of nail 1e.
FIG. 56 shows a seventh embodiment of the nail 1f. The nail 1f may be substantially similar to the nail 1e described above. The difference between them is that the nail 1f does not have a distal lock aperture or aperture. That is, except for the threads for receiving the end cap, the distal end region of the nail 1f defines a smooth surface.
52-56 show another embodiment of the end cap 80. The end cap 80 can be used in the same manner as the end cap 25 described above. The end cap 80 has a main body. The body is defined by a tip 81, a rear end 82, an outer surface 83 and an inner surface 87 and defines a conduit A through the body 80. At the rear end 82, a drive receiving feature 86 is defined. The shape and dimensions of the drive receiver 86 are set to shapes and dimensions to receive any drive device as will be understood by those skilled in the art. As shown in FIG. 54, the shape of the drive receiver 86 is set to a shape that receives, for example, a hexagonal drive tool in a non-rotatable manner. By placing the distal end in conduit A, end cap 80 is placed over the distal end of nail 1, 1a, 1b, 1c, 1d, 1e and 1f and secured to the nail and bone. To cover and lock the distal ends of the nails 1, 1a, 1b, 1c, 1d, 1e and 1f to the bone.
As shown in FIG. 52, the outer surface 83 has bone engaging features (eg, outer threads 90). In a preferred embodiment, the outer thread is a self-tapping thread. At least one recess 84 is formed in the thread 90 in the tip region. Recess 84 is distributed within thread 90 within the tip region, thereby forming a groove with self-tapping tip 85 to provide a drill-like feature. In the embodiment shown in FIG. 52, three recesses 84 are provided in the tip region, but those skilled in the art will recognize any number of recesses in the tip region without departing from the scope of the invention. Understand that can be formed. The recesses 84 are arranged at equal intervals with respect to the central axis. The central shaft penetrates the body so that the end cap 80 can be inserted into the bone evenly. End cap 80 may also include a small diameter portion 88 proximate rear end 82. Engaging features (eg, outer threads) extend along the small diameter portion 88. The engagement feature of the small diameter portion 88 may engage, for example, the inner thread of the end cap 25, as further described below.
57 and 58 show another embodiment of the end cap 80a. The end cap 80 a has the same features as the end cap 80. 57 and 58 are labeled to indicate different features between end cap 80 and end cap 80a. Excludes small diameter portion 88a and engaging features as described in more detail below. The small diameter part 88a. Define a featureless or smooth outer surface. In use, after insertion into the patient, the small diameter portion 88a remains uncovered.
In order to engage the end caps 80 and 80a with the nail bone, an engagement feature is defined by each inner and outer surface 83, 83a, 87 and 87a. The engagement feature on each inner surface can be a nail engagement feature (eg, inner threads 89, 89a). The engagement on each outer surface can be a bone engagement feature (eg, outer threads 90, 90a). As will be appreciated by those skilled in the art, the end caps 80 and 80a connect the end caps 80 and 80a to the nail to lock the nail to the bone and minimize crushing upon insertion of the end cap. As such, there may be any relationship between each inner and outer thread 89, 89a and 90. For example, in the end cap 80, the inner threads 89 have the same pitch as the threads on the distal ends of the nails 1, 1a, 1b, 1c, 1d, 1e and 1f. As shown in FIG. 54, the inner thread 89 and the outer thread 90 in this embodiment have the same pitch. In another example, in the end cap 80a, the inner thread 89a has the same pitch as the threads on the distal ends of the nails 1, 1a, 1b, 1c, 1d, 1e and 1f. As shown in FIG. 58, the external pitch is twice the internal pitch as the relationship between the inner thread 89a and the outer thread 90a. In addition, the inner thread 89a has a double lead thread and the outer thread 90a has a single lead, which is identical.
In use, the nail 1, 1a, 1b, 1c, 1d, 1e and 1f are applied to the bone (eg, after application to the clavicle), and end caps 80 and 80a are applied to the nail to provide the end of the nail. Lock (eg, the distal end). In the first step, the end caps 80 and 80a are placed until the conduit A is placed over the distal connection and reaches the thread or bone outer surface of the nail 1, 1a, 1b, 1c, 1d, 1e press 1f. Press along the part. Engage the drive device with the drive receiver 86 and actuate the drive device to tap the outer threads 90 and 90a into the bone and engage the inner threads 89 and 89a with the threads on the nail. . After completion of the driving action, end caps 80 and 80a are secured to the nail by inner threads 89 and 89a and locked to the bone by outer threads 90 and 90a. 55 and 56 show the state after the end cap 80 is connected to the nail. Optionally, for the end cap 80, the end cap 25 may be disposed on the small diameter portion 88 to engage the engaging feature.
As shown in FIG. 3, the kit according to the first embodiment of the present invention includes the clavicle nail 1 together with the proximal aiming arm 13 and the distal aiming arm 14. The proximal aiming arm 13 and the distal aiming arm 14 can be connected to the proximal connecting element 28 and the distal connecting element 27 of the clavicle nail 1 after inserting the nail 1 into the clavicle 9 as described below. Since the configurations of the proximal aiming arm 13 and the distal aiming arm 14 can be substantially identical, the detailed description of the distal aiming arm 14 also applies to the proximal aiming arm 13.
As shown in FIG. 27, the distal aiming arm 14 includes a substantially L-shaped body 41. The substantially L-shaped body 41 includes a first extension 53 and a second extension 54. The first extension 53 and the second extension 54 are arranged at an angle to each other (preferably in a vertical configuration). The distal aiming arm 14 includes a sleeve 42 at the end of the first extension 53 of the L-shaped body 41 such that the sleeve 42 extends substantially parallel to the second extension 54. The sleeve 42 includes a central bore 43 and a transverse bore 47. The central bore 43 receives the distal rod 8 of the clavicle nail 1 in a slidable manner. The transverse bore 47 extends within the sleeve 42 to receive the tip 40 of the fixation screw 19. The fixing screw 19 passes through the inside and fixes the distal aiming arm 14 to the distal rod 8 of the clavicle nail 1. The first extension 53 also includes a lumen 46. The lumen 46 extends along the length of the first extension 53 and communicates with the lateral bore 47, thereby inserting the fixing screw 19 into the lumen 46 and extending the tip 40 through the lateral bore 47, The distal arm 14 can be secured to the distal rod 8. The second extension 50 of the L-shaped main body 41 includes a guide hole 21. Each of the second extensions 50 extends along the hole axis 44. The guide hole 21 extends laterally with respect to the length via the second extension portion 54. The guide holes 21 extend through the second extension 54 such that each of the bore shafts 44 corresponds to the central shaft 38 of the distal lock aperture 6 in the clavicle nail 1.
The fixing screw 19 may be screwed into the lumen 46 so that the screw shaft 45 of the fixing screw 19 is substantially parallel to the bore shaft 44 of the guide hole 21. Fixing screw 19 includes a tip 40 that is a knurled end. The tip 40 can be inserted into the notch 29 of the distal rod 8 via the transverse bore 47. The notch 29 can be a through-hole 33 that penetrates the distal rod 8 laterally as described above. The shaft of the fixing screw 19 can be flexible along its length, for example via a plurality of grooves 48. The plurality of grooves 48 extend around a part of the circumference of the shaft. Therefore, even when the tip 40 of the fixing screw 19 and the notch 29 are not aligned, the fixing screw 19 can be fastened to the distal rod 8, whereby the tip 40 of the fixing screw 19 is used for the clavicle. The distal aiming arm 14 can be adjusted axially and rotatably until it snaps into a notch 29 in the distal rod 8 of the nail 1.
In a further embodiment as shown in FIG. 49, the proximal aiming arm 13 can be connected to a compression nut 70. The compression nut 70 applies pressure to the fracture of the clavicle 9. The compression nut 70 may be rotatably connected to a part of the aiming arm 13. A portion of the aiming arm 13 receives the proximal rod 7 so that when the compression nut 70 rotates relative to the aiming arm 13, the nut 70 moves longitudinally to the aiming arm 13.
As will be appreciated by those skilled in the art, the kit 3 may include nails 1a, 1b, 1c, 1d or one of the variations, or the kit may be a single embodiment or embodiment. May be selected from a combination of nails.
As shown in FIGS. 28 to 34, the surgical reamer 30 can be used to form a hole 32 in the clavicle 9 for receiving the nail 1. The surgical reamer 30 includes a K wire 41. The K wire 41 extends from the distal end 50 to the proximal end 35 along the longitudinal axis. The proximal end portion 35 includes a reamer head 34. The reamer head 34 is integrally formed with the K wire 41 in the distal direction of the proximal end portion 49. However, those skilled in the art will appreciate that the reamer head 34 may be formed as a separate member connected to the K wire 41. Proximal end 49 and distal end 50 have a generally polygonal cross-section that allows proximal end 49 and / or distal end 50 to engage with a perforator or other instrument to provide a reamer. It is possible to provide torque to 30. In a preferred embodiment, the proximal end 49 and the distal end 50 have three flat sides. These three flat sides extend along the length of the proximal end 49 and the distal end 50 to assist in torque delivery from the perforator to the reamer 30. The diameter of the reamer head 34 substantially corresponds to the diameter D of the nail body 12 of the clavicle nail 1. Further, the reamer head 34 has a cutting groove. The cutting groove is provided, for example, in the left-hand direction when the direction along the longitudinal axis of the reamer 30 is viewed from the proximal end portion 49. This allows the distal end 50 of the reamer 30 to be connected to the perforator so that the reamer 30 can be pulled through the clavicle 9. In addition, the proximal end 49 can be connected to a perforator so that the reamer 30 can be pressed through the clavicle 9.
As shown in FIGS. 31 and 32, the portion of the K wire 41 distal to the reamer head 34 is pressed or drilled through the clavicle 9, as will be appreciated by those skilled in the art. For example, a power tool or punch can be connected to the proximal end 49 to move the K wire 41 through the clavicle 9. The trajectory of the reamer 30 is defined by the length of the K wire 41. When the reamer head 34 contacts the surface of the clavicle 9, the power tool or punch is removed from the proximal end 49 of the reamer 30 and connected to the distal end 50 of the reamer 30. Thereafter, as shown in FIGS. 33 and 34, the reamer head 34 of the reamer 30 is pulled to puncture the clavicle 9, and the hole 32 is pierced into the clavicle 9. The clavicle nail 1 is inserted into the hole 32. In order to rotate the reamer 30 to the right in order to attach the punch to the foremost part 50 of the reamer 30, the cutting groove of the reamer head 34 is designed to the left. However, those skilled in the art will recognize that these cutting grooves can be of any configuration, provided that the reamer head 34 can assist in drilling the holes 32 through the clavicle 9. to understand.
In another embodiment as shown in FIG. 43, the reamer 30a similarly includes a K wire 41a and a first reamer head 34a. However, in the present embodiment, the reamer 30a further includes a second reamer head 36a. The second reamer head 36a is provided distal to the first reamer head 34a with a predetermined distance, and has a smaller diameter than the first reamer head 34a. The distance between the first reamer head 34a and the second reamer head 36a provides a space for providing the reamed bone material therebetween. Furthermore, the use of two reamer heads 34a and 36a reduces the force required to pull the reamer 30a through the bone.
In a further embodiment as shown in FIG. 44, the reamer 34b is substantially similar to the reamer 30a. The reamer 30a includes a K wire 41b together with the first reamer head 34b and the second reamer head 36b. The reamer 34b further includes a proximal portion 39b. The proximal portion 39b extends from the first reamer head 34b in the proximal direction to maintain the reduction of the clavicle 9. The proximal portion 39b may be a wire as shown in FIG. 44 or a cable as shown in FIG. Specifically, after the K wire 41b and the first and second reamer heads 34b and 34b36b are pulled distally through the clavicle 9, the proximal portion 39b is retained in the bone 9 to reduce To maintain. The proximal end 60b of the proximal portion 39b is configured to be attached to the distal end 52 of the nail 1 as shown in FIG. For example, the proximal end 60b can include an internal thread element (eg, a nut). The internal thread element can be connected to a corresponding external thread provided on the distal end 52 so that the proximal portion 39b can be pulled through the clavicle 9 to implant the nail 1 therein. As one skilled in the art will appreciate, other means for connecting the cable and the implant are possible.
Alternatively, the proximal portion 60b can function as a guide wire. The nail 1 is inserted through the guide wire. The proximal portion 60b is inserted into the conduit of the nail 1 and the nail 1 is slid over the proximal portion 60b and placed into the clavicle 9 along the conduit. As will be appreciated by those skilled in the art, the proximal portion 60b is removed after the nail 1 is properly implanted.
In further embodiments as shown in FIGS. 46-48, the reamer 30c may have a reamer head 34c. The reamer head 34 c has the same features and characteristics as the reamer head 34. The reamer 30c has a proximal portion 39c. The proximal part 39c is used for the same application as the proximal part 39c. That is, the proximal portion 39 c maintains a reduction in bone fracture while the nail 1 is being pulled into the clavicle 9. In this embodiment, the reamer head 34c is integrally formed with the proximal portion 39b. As shown in FIG. 47, the proximal end 60c includes an internal thread 61c. The female thread 61c is formed in a recess 62c disposed in the proximal end 60c. As described above, the nail 1 can be pulled through the clavicle 9 by connecting the female thread to a corresponding male thread provided on the distal end 52, as shown in FIG. Of course, those skilled in the art will appreciate that other means for connecting the reamer 30c and the nail 1 to each other are possible. For example, the reamer 30c and the nail 1 can be connected via a bayonet type connection or a press-fit connection. FIG. 21 shows a reamer 104 ″ ″ configured to pull the nail 102 through the bone 10.
Although an example in which only one reamer head is provided in the reamer 30c is shown, those skilled in the art will understand that any number of reamer heads can be provided in the reamer 30c. For example, reamer 30c may include a reamer head configuration as described above for reamer 30b. One skilled in the art will appreciate that any of the reamers 30, 30a, 30b and 30c can be used in the system of the present invention.
As shown in FIGS. 4 to 22, an exemplary embodiment of a surgical method for fixing a fractured clavicle inserts the clavicle nail 1 of the first embodiment from the posterior outer side to the anterior inner side of the clavicle 9. Including that. Although the use of the nail 1 will be described in the following method, a person skilled in the art understands that any one of the above-described nails 1a to 1d can be used instead of the nail 1. Said method is suitable for a fractured clavicle 9, for example based on the length and diameter of the surgical nail 1 relative to the dimensions of the clavicle 9 and the distance between the proximal lock aperture 5 and the distal lock aperture 6. 1 may be included. A segment 32 of the clavicle 9 is aligned, and the reamer 30 can be used to drill a hole 32 for receiving the clavicle nail 1 through the clavicle 9. The selected clavicle nail 1 can then be connected to an insertion handle 15 as shown in FIG. 4 so that the clavicle nail 1 is fractured through the hole 32 through the aligned bone fragment. 9 is supported by the handle 15. It will be appreciated that two small skin incisions may be required to deliver clavicle nail 1 through hole 32.
Those skilled in the art will appreciate that the hole 32 can be formed using the reamer 30a in the manner described above for the reamer 30. Alternatively, the hole 32 can be formed in the clavicle 9 using the reamer 30b or 30c. In the case of using the reamer 30b, the proximal portion 39b can be held in the clavicle 9, and the reduction of the fracture can be maintained as shown in FIG. As described above, the nail 1 may be slid on the proximal portion 39b or may be guided into the clavicle 9 via a traction force on the proximal portion 39b. As described above, when the nail 1 is deflected when a force is applied from the clavicle 9 to the nail 1 when inserting and / or inserting the nail 1 along the bent path of the medullary canal at the time of the hole 32 , Nail 1 is formed. When the nail 1 is inserted into the desired position in the clavicle 9, the proximal portion 39b is removed from this position. As understood by those skilled in the art, a similar method can be used when connecting to the nail 1 using the reamer 30c as shown in FIG.
The clavicle nail 1 is extended until the distal portion 17 extends distally and passes through the inner end 4 of the clavicle 9 until the distal locking aperture 6 projects from the inner end 10 of the clavicle 9 as shown in FIG. Insert into the clavicle 9 through the hole 32. Thereafter, the distal aiming arm 14 is slid onto the distal rod 8 and the distal rod 8 is extended through the central bore 43 of the sleeve 42 as shown in FIG. The distal aiming arm 14 can be positioned such that the end of the sleeve 42 is adjacent the shoulder 18 at the transition between the distal rod 8 and the nail body 12. After the distal aiming arm 14 is properly positioned, the fixation screw 19 is inserted into the lumen 46 and the tip 40 of the fixation screw 40 is advanced through the lateral bore 47 into the central bore 43, as shown in FIG. Thus, the distal aiming arm 14 is locked to the clavicle nail 1. Thus, the tip 40 of the fixation screw 19 extends into the notch 29 in the distal rod 8 of the surgical nail 1 and causes the guide hole 21 of the distal aiming arm 14 to rotate and axially in the surgical nail 1. Align with the corresponding distal lock aperture 6. As shown in FIG. 8, the protective sleeve 20 is then inserted into the guide hole 21 in the distal aiming arm 14 so that the bore shaft 44 of the guide hole 21 in the distal aiming arm 14 is connected to the distal stop hole 6. Make sure you have alignment. As shown in FIG. 9, the drill bit 22 is fed through the protective sleeve 20 to confirm that the drill bit 22 extends along the central axis of the distal lock aperture 6. After alignment confirmation, the protective sleeve 20 and drill bit 22 can be removed from the distal aiming arm 14.
10 and 11, the nail body 12 of the clavicle nail 1 and the attached distant until the outer thread 23 at the proximal end 3 of the nail body 12 protrudes from the outer end 11 of the clavicle 9. The aiming arm 14 can be moved toward the outer end 11 of the collarbone 9. By pulling the insertion handle 15 proximally (i.e. towards the user), the nail body 12 can be moved. After placing the nail body 12 so that the thread 23 is close to the outer end 11 of the clavicle 9, the handle 15 is moved and shown in FIG. 12 in the same manner as described above for the distal aiming arm 14. Thus, the proximal aiming arm 13 can be slid onto the proximal rod 7 of the clavicle nail 1. The proximal aiming arm 13 can be locked to the nail 1 using a fixing screw 19 as shown in FIG. As will be appreciated by those skilled in the art, after the proximal aiming arm 13 is connected to the compression nut 70, the proximal aiming arm 13 is connected to the proximal connecting element 28 and the compression nut 70 is connected as shown in FIG. It is placed between the proximal portion of the aiming arm 13 and the clavicle 9 to compress the fracture.
After compressing the clavicle 9 as desired, a hole corresponding to the proximal lock aperture 5 can be drilled in the clavicle 9 by guiding the drill bit 22 through the protective sleeve 20. The protective sleeve 20 is inserted into each guide hole 21 in the proximal aiming arm 13 as shown in FIG. Thereafter, the proximal set screw 24 is inserted into the protective sleeve 20 as shown in FIG. 15 and inserted into each guide hole 21 in the proximal aiming arm 13, and the proximal set hole is inserted through the drilled hole in the clavicle 9. 5 can be sent. Thereafter, the drill bit 22 is similarly used to drill a distal hole through the guide hole 21 of the distal aiming arm 14 in the clavicle 9 as shown in FIG. To correspond to. Thereafter, a distal set screw 24 is routed through a protective sleeve 20 that passes through each guide hole 21 in the distal aiming arm 14 and, as shown in FIGS. 17 and 18, through the perforated distal hole. Into the corresponding distal lock aperture 6.
After the set screw 24 is inserted into the bone to fix the nail body 12 to the clavicle 9, the fixation screw 19 can be removed to move the proximal aiming arm 13 and the distal aiming arm 14 away from the nail body 1. it can. As shown in FIG. 19, the nail body 12 fixes the fracture of the clavicle 9 by fixing to the clavicle 9, but the distal rod 8 and the proximal rod 7 are connected to the lateral end 11 and the intermediate end 10 of the clavicle 9. It is held in a state of extending from Thus, as shown in FIG. 20, a portion of the distal rod 8 extending distally from the outer end 11 of the clavicle 9 is cut at the bone interface. Similarly, the proximal rod 7 extending proximally from the inner end 19 of the clavicle 9 is cut from the remaining portion proximally adjacent to the outer thread 23 of the nail body 12. An end cap 25 as shown in FIGS. 21 and 22 may be placed on the outer thread 23 of the nail body 12 to protect the proximal end 3 of the nail body 12 from bone ingrowth. Thereafter, the intermediate and lateral incisions in the patient's body are closed. A person skilled in the art understands that if the clavicle nail is a nail 1c, the proximal rod 7 and / or the distal rod 8 extending from the clavicle 9 can be cut along the groove 109.
Another exemplary embodiment of a surgical method for fixing a fractured clavicle includes the insertion of the clavicle nail 1a of the second embodiment into the bone 9. The method is substantially the same as that described above for the first embodiment, except that the removably connected distal portion 8a and proximal portion 7a are disconnected but from a connected arrangement (eg, an instrument). The only difference is that it has not been removed (from each connection to the nail body 12a) (not shown). That is, for example, the distal portion 8a and the proximal portion 7a for press-fit connection arrangement are removed using the instrument.
In yet another exemplary embodiment of the surgical method, wherein the clavicle nail is the nail 1b of the third embodiment, the method includes the first embodiment of the distal connecting element 27b and the first of the proximal connecting element 28b. The method as described above for the second embodiment. That is, after the nail 1b is placed, the proximal connecting element 28b is cut and then the proximal connecting element 28b is covered by the end cap 25 to cover any sharp edges and minimize the possibility of soft tissue inflammation. Turn into. Thereafter, the removably connected distal connection element 27b is removed from the connection arrangement with the nail body 12b, for example, by an instrument (not shown).
In another exemplary embodiment of a surgical method using nail 1e, the method may be substantially similar to the method as described above for nail 1. However, since the nail 1e includes only the distal connecting element 8e, only the distal aiming arm 14 is directed to the distal connecting element 8e in order to guide the piercing instrument and / or the distal set screw through the distal aperture 6e. And attached. Through the proximal opening of the hole 32 in the clavicle 9, a proximal set screw can be inserted into the proximal lock aperture 5e.
As shown in FIGS. 23-26, the method according to another exemplary embodiment of the present invention includes the removal of the clavicle nail 1 from the clavicle 9 if desired. As shown in FIG. 23, the clavicle nail 1 can be removed from the clavicle 9 by unscrewing the end cap 25 from the screw thread portion 23 at the proximal end portion 3. Thereafter, a removal tool 26 as shown in FIG. 24 can be connected to the outer thread 23 at the proximal end 3 of the nail body 12 to provide a grip handle for the user. It should be noted that the set screw 24 should be held in place to avoid rotation of the clavicle nail 1 during installation of the removal instrument 26. After connecting the removal tool 26 to the nail body 12, the set screw 24 can be removed from the clavicle 9 as shown in FIG. After removing all the set screws 24, the user can pull the clavicle nail 1 from the clavicle 9, for example, by pulling the removal handle 26 in the proximal direction as shown in FIG.
In the exemplary method as described above, an example in which the clavicle nail 1 is inserted from the rear outer side to the front inner side of the clavicle 9 has been described. It is understood that it is possible to insert from the inside to the back outside. According to another embodiment of the present invention, when the clavicle nail 1 is inserted into the clavicle 9, the proximal end 3 of the nail body 12 is positioned at the inner end 10 of the clavicle 9 and the nail body 12 is distal. The end 4 is disposed at the outer end 11 of the clavicle 9. As will be appreciated by those skilled in the art, this embodiment of the surgical method is substantially similar to the exemplary method described above. The method of fixing the fractured clavicle by inserting the clavicle nail from the front inner side to the rear outer side can be performed using the same clavicle nail 1 and the same instrument as described above. The same proximal aiming arm 13 and distal aiming arm 14 can also be used. However, the clavicle nail 1 should be rotated approximately 90 degrees around the longitudinal axis 2 so that the central axis 38 of the proximal lock aperture 5 extends in the anteroposterior direction and the center of the distal lock aperture 6 A shaft 38 extends in the sagittal direction. As will be appreciated by those skilled in the art, the clavicle nail 1 is placed inside the clavicle 9 until the distal portion 17 of the nail 1 including the distal lock aperture 6 projects distally from the outer end 11 of the clavicle 9. Insert from end 10 to outer end 11. Similarly, after confirming the alignment between the guide hole 21 and the distal lock aperture 6 as described above, the outer thread 23 projects from the inner end 10 of the clavicle 9 at the proximal end 3 of the nail body 12. Until then, the nail body 12 of the clavicle nail 1 to which the distal aiming arm 14 is attached is moved into the clavicle 9 in the middle. For example, by pulling the insertion handle 15 attached to the proximal end 51 of the nail 1, the nail body 12 can be moved accordingly.
Although the invention and its advantages have been described in detail, various changes, substitutions and modifications can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Should be understood. Furthermore, the scope of the present application is not intended to be limited to the specific embodiments of the processes, machines, manufacture, material compositions, means, methods and steps described herein. One of ordinary skill in the art, from the disclosure of the present invention, describes a process, machine, manufacture, material that performs substantially the same function or achieves substantially the same results as the corresponding embodiments described herein. It will be readily appreciated that compositions, means, methods or steps, whether existing or later developed, can be utilized in accordance with the present invention.
Those skilled in the art will appreciate that various changes and modifications can be made to the present invention without departing from the broad scope of the appended claims. Some of such changes and modifications are described above, and other changes and modifications will be apparent to those skilled in the art.
A surgical nail for bone treatment,
A first locking aperture extending from the first end to the second end along the longitudinal axis and penetrating the first end laterally, and penetrating the second end laterally A nail body including a second lock aperture;
A first connecting element connected to the second end of the nail body and adapted and configured to be connected to a first aiming guide;
Including surgical nails.
The surgical nail according to claim 1, including a second connecting element connected to the first end of the nail body and adapted and configured to connect to a second aiming guide.
The second connection element is a rod, said extending along the length L c from the first end to the longitudinal axis substantially coaxial with the nail body in the distal direction, as claimed in claim 2 Surgical nail.
A cross-sectional area of the first connecting element and the second connecting element is equal to or less than a cross-sectional area of the nail body, the nail body has a maximum diameter D, and the first rod and the second rod are The surgical nail according to claim 2, having a maximum diameter d <D.
The second end of the nail body has a length L D extending from the second end of the nail body, the second connecting element, said first end of said nail body The surgical nail according to claim 2, wherein the surgical nail extends from a length L c to a length L c that is equal to or greater than L D.
The surgical nail according to claim 5, wherein the minimum value of the ratio of L c to L D is 1.0.
The surgical nail according to claim 5, wherein the minimum value of the ratio of L c to L D is 3.0.
Said first connecting element is a rod, said extending from the second end of the nail body along a length L x in the longitudinal axis substantially coaxial distally, surgery according to claim 1 Nail for.
The surgical nail according to claim 1, wherein an angle at which the second lock aperture extends is offset with respect to the first lock aperture.
The surgical nail according to claim 1, wherein the second lock aperture and the first lock aperture extend from one another along substantially the same plane.
The surgical nail according to claim 1, wherein the nail body is substantially straight.
The surgical nail according to claim 1, wherein the nail body is curvilinear.
The surgical nail according to claim 1, wherein the nail body includes a substantially triangular cross-section.
The surgical nail according to claim 1, wherein the nail body includes a substantially flat cross-section.
The surgical nail according to claim 14, wherein a region of the nail body including the flat cross-section is helical.
Each of the first connection element and the second connection element includes a through hole, and the through hole penetrates the first connection element and the second connection element in a lateral direction along a corresponding hole axis. A hole axis of the through-hole penetrating the second connecting element is substantially parallel to a central axis of the first lock aperture, and the hole axis of the through-hole extends the second lock element The surgical nail according to claim 2, wherein the surgical nail penetrates and is substantially parallel to a central axis of the second lock aperture.
The one of the first lock aperture and the second lock aperture is a U-shaped groove that is offset from a longitudinal axis of the nail body and opens to the outside of the nail body. Surgical nails as described in.
The surgical nail according to claim 2, wherein one of the first connection element and the second connection element is removably connected to the nail body.
The nail body has an initial undeformed configuration and a curvature corresponding to the curvature of the bone into which the nail is inserted, and the flexibility of the nail body is such that the nail body enters the bone during insertion. If the desired final position of the nail body is obtained that is selected to be deformable and the curvature of the portion of the bone penetrated by the nail body corresponds to the shape in the initial undeformed configuration, the nail The surgical nail according to claim 1, wherein the body substantially returns to the initial undeformed configuration.
The surgical nail according to claim 1, wherein a portion of the nail body has a small diameter portion.
The surgical nail according to claim 20, wherein the portion is overmolded with a viscoelastic polymer.
The first lock aperture extends through a wall from the first end of the nail body such that an axis of the first lock aperture extends at an angle with respect to the longitudinal axis. Surgical nails as described in.
A surgical nail sized and shaped to be inserted into a fractured bone,
A first locking aperture extending from the first end to the second end along the longitudinal axis and penetrating the first end in the lateral direction, and penetrating the second end in the lateral direction A nail body including a second lock aperture;
A first connecting element extending along a length L x substantially coaxial with a longitudinal axis of the nail body in a distal direction from the second end;
Including surgical nails, and
A first aiming arm configured to be connected to the first connecting element in a desired configuration, wherein the first aiming arm extends within the first aiming arm. Including a hole, whereby when the first aiming arm is connected to the first connecting element in the desired configuration, the first guide hole is aligned with the second locking aperture; One aiming arm,
The surgical nail includes a second connecting element extending along a length L c substantially coaxially with a longitudinal axis of the nail body distally from the first end, the kit comprising: A second aiming arm, wherein the second aiming arm is configured to be connected to the second connecting element in a desired configuration, and a second guide hole extending through the second aiming arm The second guide hole is aligned with the first lock aperture when the second aiming arm is connected to the second connection element in the desired configuration. The kit according to 1.
24. The method of claim 23, further comprising a reamer and a first reamer head, the reamer including a wire extending along a longitudinal axis, wherein the first reamer head is formed on a first end of the reamer. The described kit.
24. A handle is further included, wherein the surgical nail can be moved longitudinally relative to the bone by attaching the handle to the first end of the second connecting element. The kit according to 1.
24. The kit according to claim 23, wherein the first connecting element and the second connecting element are rods.
26. The reamer includes a second reamer head spaced from the first reamer head, wherein the diameter of the second reamer head is smaller than the diameter of the first reamer head. The kit according to 1.
The reamer includes a first end, the first end extending distally from the first reamer head as the reamer moves through the bone and a previously obtained fracture 26. The kit of claim 25 configured to maintain a reduction in
The first end is a cable, includes a first end, and pulls the nail through the bone by attaching the first end to an end of the first connecting element. 30. The kit of claim 29, wherein the kit can.
Further comprising a compression nut, wherein the compression nut is moved to the kit when the compression nut is rotated to the second aiming arm by connecting the compression nut to the second aiming arm. Item 24. The kit according to Item 23.
A bone fixation method,
Inserting a surgical nail into the fractured bone through the first opening in the bone such that a first connecting element protrudes from the second end of the bone, the surgical element comprising: The nail includes a nail that extends from the first end to the second end along the longitudinal axis, a first lock aperture that extends laterally through the first end, and a second end. and a second Rokkuapacha penetrating laterally, the second rod is a longitudinal axis substantially coaxial with the nail along the length L x, the steps,
Attaching a first aiming arm to the first connecting element, the first aiming arm including a first guide hole, wherein the first aiming arm is provided by the first aiming arm; When attached to the first connecting element in a desired configuration, aligned with the second locking aperture in the nail;
Inserting a first set screw into the second lock aperture through the first guide hole;
Attaching a second aiming arm to a second connecting element, wherein the second connecting element is substantially aligned with the longitudinal axis of the nail distally from the first opening in the bone; to extend along the length L c coaxially, the second aiming arm includes a second guide hole, the second guide holes, the second the second aiming arm in a desired configuration Attached to the connecting element of the first and second alignment elements of the first locking aperture in the nail;
Inserting a second set screw into the first lock aperture through the second guide hole;
The method of claim 32, further comprising removing a portion of the second connecting element that protrudes from the bone and a portion of the first connecting element that protrudes from the bone.
35. The method of claim 34, wherein the removing comprises removing a portion of one or each connecting element that is removably connected to the nail body.
35. The method of claim 32, further comprising generating a hole in the fractured bone using a surgical reamer that includes a reamer head on the first end of the wire after fragment realignment.
Attaching an end cap to the thread at the first end and / or the second end of the nail to avoid bone ingrowth into the first opening in the bone; 35. The method of claim 32, comprising.
34. The method of claim 32, wherein the bone is a clavicle.
Inserting the nail into the bone until the second locking aperture extends from the bone;
Checking the alignment between the first guide hole in the first aiming arm and the second lock aperture of the nail;
Moving the nail body of the surgical nail proximally to the bone until a first end of the nail body is adjacent to the first opening of the bone;
35. The method of claim 32, further comprising narrowing the hole through the bone by pulling a reamer including a reamer head through the bone.
The reamer includes a first end extending distally from the reamer head and retains the first end within the bone to maintain a previously obtained reduction in bone fracture. 41. The method of claim 40, further comprising a step.
42. The method of claim 41, further comprising connecting an end of the first connecting element to a first end of a first end of the reamer for pulling the nail into the bone. Method.
42. The method of claim 41, further comprising sliding the nail over the first end into the bone.
The compression nut connected to the second aiming arm is rotated to compress the bone, while the second aiming guide maintains the position of the nail, from a portion of the compression nut. 35. The method of claim 32, further comprising applying a force of two to the first end of the bone.
36. The method of claim 32, further comprising inserting a first set screw into the first opening of the bone via the first lock aperture.
A wire extending from the first end to the second end along the longitudinal axis;
A first reamer head formed along a first end of the wire;
Including surgical reamer.
47. The method according to claim 46, further comprising a second reamer head spaced from the first reamer head, wherein the diameter of the second reamer head is smaller than the diameter of the first reamer head. Surgical reamer.
47. The surgical reamer according to claim 46, wherein at least one of the first end and the second end of the wire is sized and shaped to engage a drive instrument.
47. The surgical method of claim 46, wherein the first end extends distally from the first reamer head to maintain previously obtained fracture reduction when the reamer moves through the bone. Reamer for.
The first end is a cable including a first end, and the nail is pulled through the bone by attaching the first end to a second end of the nail. 50. The surgical reamer of claim 49, wherein the surgical reamer is capable of:
An end cap attached to an end of a nail, a body extending along a longitudinal axis from a first end to a second end, the body extending into the body The nail body including an inner thread extending along a portion of the conduit, thereby engaging an end of the nail and a bone into which the nail is inserted An end cap with threads engaged along the outer surface of the.
52. The end cap of claim 51, wherein the cavity is a conduit that passes through the body.
52. The end cap of claim 51, wherein the engagement feature is a self-tapping outer thread.
52. The end cap of claim 51, wherein the second end of the body includes a self-tapping tip.
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2015-01-28 RD02 Notification of acceptance of power of attorney