Source: https://patents.google.com/patent/WO1997021383A1/en
Timestamp: 2019-12-12 20:10:35
Document Index: 297981151

Matched Legal Cases: ['art 32', 'art 42', 'art 42', 'art 25', 'art 22', 'art 25', 'art 25', 'art 22', 'art 25', 'art 43', 'art 43', 'art 43', 'art 43', 'art 43']

WO1997021383A1 - An instrument for the application of surgical material - Google Patents
WO1997021383A1
WO1997021383A1 PCT/IB1996/001431 IB9601431W WO9721383A1 WO 1997021383 A1 WO1997021383 A1 WO 1997021383A1 IB 9601431 W IB9601431 W IB 9601431W WO 9721383 A1 WO9721383 A1 WO 9721383A1
PCT/IB1996/001431
1997-06-19 Publication of WO1997021383A1 publication Critical patent/WO1997021383A1/en
108010034963 tachocomb Proteins 0 abstract description 28
The present invention relates to an instrument for the application of surgical material and comprising an elongated unit, a material applicating member pivotally connected to the distal end of the elongated unit, so as to allow movement of the applicating member relative to the elongated unit, means for retaining the applicating member in a desired angular position during surgical intervention. In particular, an instrument according to the invention is suited for the application of surgical sheet repair material such as, e.g., TachoComb®. An instrument according to the invention is designed for use in minimally invasive surgery and/or endoscopic surgery, but it may also be employed during conventional surgery.
AN INSTRUMENT FOR THE APPLICATION OF SURGICAL MATERIAL
Minimally invasion in the human body has been a research object for many decades. The invention of simple optical instruments considerably improved diagnosis of disorders related to internal parts of the body. In the beginning of the 50s, the optical instruments were markedly improved by means of new rod lens systems and formed the basis for the development of endoscopic methods. In particular, endoscopy is suitable for use in nearly every medical speciality such as, e.g., in internal medicine, gynaecology, urology, neurosurgery, ORL {oto-rhino-laryngology) and surgery.
An important tool in the minimally invasive surgery is also fibrin adhesives which are important for tissue management. For the application of such adhesives, rigid and flexible double lumen hollow needles were developed by the present inventors for liquid adhesion. As something new, spray adhesion is also possible in minimally invasive surgery. A very advantageous surgical material for use in traditional surgery as well as in minimally invasive surgery is a material called TachoComb® which is manufactured by Nycomed Austria GmbH and which is a fibrin glue-impregnated fleece (EP-B-0 059 265) . After introducing TachoComb® material into conventional surgery, the use of this important contribution to surface management also in the field of minimally invasive surgery has turned out to be most helpful. As minimally invasive surgery stitching methods are very costly and often do not meet the surgical requirements, the particular properties of a fleece-adhesive like TachoComb® seem to be very advantageous in the field of minimally invasive surgery (TachoComb® has indeed proved to be a very useful and beneficial tool in any kind of surgical intervention. Tests concerning liquid adhesion employed in minimally invasive surgery have shown that with regard to capacity, indication width, and reliability, the advantages of a fleece-bound fibrin adhesive have been far from reached. In minimally invasive surgery, intracorporal coating of a carrier with fibrin adhesive, as it is conventionally often performed, is not contemplated, as the handling would be too time-consuming and uncertain. An extracorporal self-coating followed by a trocar passage is also dropped, as this would result in huddling of the fleece due to the folding of the carrier material. The fabrication of TachoComb® as a ready-to-use product in dry condition therefore seems to be the choice for minimally invasive surgery application.
The introduction of TachoComb® in the minimally invasive surgery has been very advantageous. After application, the TachoComb® material resides as an internal biodegradable plaster and it is useful as a styptic agent as well as for tissue compression, tissue sealing and tissue healing. The TachoComb® material has made a remarkable contribution to surgery as operations which previously would have been inconceivable or impracticable are now made possible through the application of TachoComb® (or the like) . An example is the application of TachoComb® in the case of pneumothorax. In the following, TachoComb® material is used as an example of a surgical material. It is of course within the scope of the invention that other surgical materials than TachoComb® may be applied by use of an instrument according to the invention.
In order to overcome at least some of the above-mentioned disadvantages, the ENDOdock® applicator was developed (EP-A-0 750 885) . This applicator is especially designed for application of relatively small sized surgical material (such as, e.g., 3 x 2 cm). A pleural sealing using the ENDOdock® applicator, e.g. in the case of pneumothorax, is more difficult to thoracoscopy, as, due to an enormous surface tension, the stability offered by the fleece is not sufficient. The same applies to laparoscopy when dealing with a liver or spleen rupture where a larger adhesive surface must also be available. Indications for sealing of the gallbladder's bed at the liver, where at least in regard to the size, an effort might be contemplated, are rare, as bleedings and small gall leaks will coagulate easily.
Moreover, the ENDOdock® system has some deficiencies with regard to a reliable application in that; i) the plastic screen does not always unfold sufficiently effectively, especially if it has been in the applicator for several minutes; ii) stripping of the fleece may be difficult as the adhesive strength of the adhesive can be lower than the strength of the fleece-holding device; and iii) in some cases, the plastic screen may work loose from the applicator and will only be found in the body cavity with difficulty (not X-ray detectable, transparent) .
As it appears from the above, there is a demand for the development of an instrument for the application of a surgical material, notably a material like TachoComb®, during surgery especially during minimally invasive surgery without one or more of the above-mentioned problems. An object of the present invention is therefore such a novel instrument. The development of an instrument according to the invention is based on the following optimal requirements for such an instrumen :
An instrument according to the invention is advantageous with respect to at least one or more of the above-mentioned requirements compared with the prior art (e.g. ENDOdock® applicator) .
More particular, the present invention relates to an instrument, wherein the applicating member comprises a rod- shaped portion so as to allow a sheet of surgical material such as, e.g., TachoComb® to be rolled up to form a carpet- like roll of surgical material on the rod-shaped portion of the applicating member. The rod-shaped portion may further comprise sensing devices and/or any other optional devices useful during surgical intervention.
At least the rod-shaped portion of the applicating member may further define a slit extending longitudinally over at least part of the length of the applicating member, so as to provide a cavity for anchoring a surgical material, e.g., TachoComb®. Other mechanical means for anchoring the surgical material are possible, friction means, spring loaded or other force loaded mechanisms, as well as means where an adhesive effect of the surgical material such as, e.g. , TachoComb® is used for retaining the material on the rod-shaped part of the elongated member.
The instrument according to the invention may further comprise manoeuvring means for the pivotal movement of the applicating member, and operating means operating the manoeuvring means positioned at the proximal end of the elongated unit. Though it is possible to manoeuvre the applicating member by means of other tools, such as forceps, e.g., introduced via other trocars, the manoeuvring and control of the applicating member is made considerably easier and more accurate by providing manoeuvring means for the pivotal movement of the applicating member. The manoeuvring means may comprise force transmitting mechanical means, such as a Bowden cable, one or more worm wheels, a rack/toothed wheel configuration, a system of stiff rods, a wire system, a spindle/nut configuration and/or combinations thereof or any other mechanism. The mechanical means may be activated by hand or they may be combined with electrical activation means, such as an electromotor. Preferably, the elongated unit comprises an elongated rod member on which the applicating member is mounted and a second sleeve member surrounding the rod member and having a handle formed at its proximal end. The surrounding second sleeve member may have several functions. The handle formed at the proximal end of the sleeve member allows the operator to handle the instrument in a secure and safe way. Further, the second sleeve member, preferably having a smooth and straight outer surface, protects any manoeuvring or other means extending from the applicating member to the distal end of the elongated unit, and at the same time it stabilises the elongated unit when introducing it into a trocar.
Preferably, the force transmission means further comprise third threads formed on the spindle, the first and third threads being right and left handed, respectively, or vice versa, and a second displaceable member defining fourth threads cooperating with the third threads and being interconnected with the applicating member. By interconnecting the two displaceable members by a stretched wire forming at leat one close loop around a pivoting sleeve of the applicating member at the distal end of the elongated unit, the applicating member may be pivoted around its pivot by displacing the displaceable members. Thereby the straight portions of the wire performs a linear movement, while the looped portion of the wire performs an angular movement causing the applicating member to pivot, as at least part of the wire loop engage with the pivoting sleeve of the applicating member. Because the wire is stretched between the two displaceable member, which are provided with counter- directed threads engaging with corresponding threads on the spindle, the wire will be subjected to tension irrespective the direction of the rotational movement of the spindle and the direction of the linear movement of the displaceable members.
In order to facilitate unrolling of a sheet of surgical material during surgical intervention, at least the rod- shaped part of the applicating member is mounted rotatably about its longitudinal axis about a non-rotatable, proximal part of the applicating member.
A particular embodiment of an instrument according to the invention further comprises a sleeve member having a trumpet- shaped enlargement at its proximal end, and wherein the elongated unit comprises a shaft with a handle. The interconnection between the elongated unit and the applicating member may comprise a contact member, which is movable connected to the elongated unit, and which may pivot at an angle of up to about 135° to each side from its straight position, and which is connected to the elongated unit by means of a tension bolt, and wherein the contact member comprises connection means, which are guided through the elongated unit to the upper exterior of the first portion of the elongated unit. Further, the applicating member with a stopping means and a sheet holding means is pivotally connected to the contact member.
A second embodiment of the invention relates to an instrument, wherein the elongated unit has at least a proximal and a distal portion, the cross section of the proximal portion being greater than the cross section of the distal portion, so that an abutment surface is formed, and the proximal portion forms a handle, and wherein at least the rod-shaped part of the applicating member is mounted rotatably about its longitudinal axis about a non-rotatable, proximal part of the applicating member. This second specific embodiment of the invention comprises no operating means for operating the pivoting movement of the applicating member. The pivoting movement is preferably activated by catching the applicating member or the surgical material by other tools, such as forceps, which during minimally invasive procedures are introduced through other trocars. The pivotal interconnection between the applicating member and the elongated unit may be obtained by any of the means described above. The second preferred embodiment of the instrument according to the invention further comprises a first sleeve member identical to the one described above. The first sleeve member preferably further has a trumpet-shaped enlargement at its proximal end. The elongated unit may comprise shaft with a handle, and the interconnection between the elongated unit and the applicating member may comprise a contact member, which may pivot at an angle of up to about 135° to each side from its straight position. The tensile strength of the hinge mechanism, i.e., the force required to activate the pivoting movement of the applicating member may be determined by the distortion of a tension bolt. The applicating member may comprise a stop screw, and a sheet holding means may rotatably mounted on the contact member.
In a further aspect, the invention relates to an instrument for the application of surgical material and comprising an elongated member, a material applicating member pivotally connected to the distal end of the elongated member, wherein the elongated member has at least a first and a second portion, and wherein the second portion is surrounded by a sleeve member, and wherein the interconnection between the elongated member and the applicating member has an extension forming the applicating member, said extension being provided with a slit, the slit being suited for fastening a sheet of surgical material, the applicating member being pivotable at an angle of up to about 90° in any direction.
The spiral spring establishes a pivotable link between the applicating member and the elongated member. The spiral spring allows the applicating member to pivot in any direction into a position, where the free end of the rod- shaped portion of the applicating member hits the first elongated member, or into any intermediate position. The pivoting movement of the applicating member 20 may be activated by hand using other tools, e.g., forceps. The force needed to activate the pivoting movement of the spring is determined by its spring constant.
In other embodiments of the invention, the spiral spring is substituted by any elastic member, e.g., a solid member made from a resilient material. In a more specific embodiment of the invention, the free end portion of the spiral spring may form at least part of the second elongated member. Though this a possible configuration, it is not a preferred embodiment, as it requires a thick spring wire compared to the thickness of the applicating member, whereby the spring becomes too stiff or whereby the applicating member becomes to weak.
The TachoComb® material is primarily used for the sealing of body tissue. The possibilities within the minimally invasive surgery comprise e.g. selective sealing of parenchyme organs (lungs, liver, spleen, kidneys) , organs like the gastrointestinal tract and the urogenital tract and structures like the lymphoglandular system, the spinal cord, and the nerves. Due to the characteristics of TachoComb®, an effective imperviousness to all body fluids (blood, lymph, gall, urine) as well as gases will exist after application. By using an instrument according to the invention, both elective surgery (e.g. Hodgkin-Staging) and emergency surgery (e.g. pneumothorax, splenotomy) may be performed by TachoComb® application in minimally invasive surgery.
The benefit to the patient when using this method is significant. Minimally invasive surgery itself reduces the need for analgesics and the period of hospitalisation of the patient. Infections are minimized as the surface area exposed to surgical intervention is reduced, and cosmetic advantages are obtained. By combining minimally invasive surgery with the application of TachoComb®, these effects become more evident, and safe management of body tissue for blood sealing and imperviousness of resection areas are obtained. Furthermore, due to reduced secretion with a reduced rate of infection, fewer drainage days is a further result of the application of TachoComb® by minimally invasive surgery in patients suffering from cystic fibrosis.
As it is apparent from the above, an instrument according to the present invention is suitable for use in surgery in connection with application of a surgical material. The instrument may be employed in all relevant types of operations, notably operations involving minimally invasive surgery. As an example, in connection with thorax drainage for cystic fibrosis patients, the post-operative drainage period is reduced to an average of 11 hours (compared with an average drainage period of 17 days when traditional drainage is employed) . Furthermore, the patients recovered quicker resulting in a shorter hospitalisation time and the degree of hospital-related infections were reduced.
Fig. 5 shows a second sleeve member of an instrument according to the invention, Fig. 6 is a view showing the function of the pivoting movement of the applicating member and the rotating movement of the handle in the first preferred embodiment of the invention,
Fig. 7 shows a detail of the applicating member according to the invention and a sheet of surgical material, Fig. 8 shows a detail of the interconnection between the applicating member and the manoeuvring means in the first preferred embodiment of the invention,
Fig. 10 is a diagrammatic side view illustrating the working principle of the first preferred embodiment of the instrument according to the invention, Fig. ll shows an assembly of a second preferred embodiment of an instrument according to the invention,
Fig. 22 shows the third preferred embodiment of the instrument, where the applicating member is separated from the body part of the instrument. Fig.l shows a first preferred embodiment of an instrument l according to the invention. The instrument 1 comprises a sleeve member or a first sleeve member 15, shown in figs. 3, 12 and 20, and a body assembly 2, shown in fig. 2. The body assembly 2, shown in fig. 2, comprises a second sleeve member or sleeve member 6, shown in fig. 5, and an inner assembly 11 and an applicating member 20 pivotally connected to the inner assembly 11 at the distal end of the inner assembly. A unit comprising the body assembly 2 except the applicating member is referred to as an elongated unit (not shown separately in the drawings) .
The second sleeve member 6 shown in fig. 5 has at least a first portion 6a at its proximal end and a second portion 6b at its distal end, the second portion 6b having a reduced diameter compared to the first portion 6a. At the cross sectional extension between the first and second portion, an abutment surface 7 is formed. An inner bore 8 extends in a longitudinal direction through the second portion 6b and through at least part of the first portion 6a, so as to allow at least part of the inner assembly shown in fig. 4 to extend through at least the second portion 6b and to engage with control means comprised in the first portion 6a. The control means comprises a spring loaded button 4 and a roll 5. The roll 5 is engaged in the hollow part of the first portion 6a by bearing means (not shown) . Preferably, the bearing means allow a smooth running of the roll 5.
The inner assembly 11, shown in fig. 4, comprises a shaft 27 having means 30 and 31 at its proximal end allowing the 97/21383 PO7IB96/01431
20 assembly to be received in corresponding means comprised in the roll 5. The edged portion 30 of the shaft 27 fits the inner shape of the roll 5, whereby the rotating motion of the roll 5 will be followed by the shaft 27. A pointed knob 31 at the proximal end of the shaft 27 allows the shaft 27 and thereby the inner assembly 11 to be secured in the second sleeve member 6. When assembling the inner assembly 11 and the second sleeve member 6, the pointed knob 31 will press against a sleeve mounted on a spiral spring (not shown) connected to the button 4. When the knob has completely passed the spring loaded sleeve, the spring load will press the sleeve against an intermediate part 32 of the shaft 27. At the same time, a knob 10 formed on the inner assembly at its distal end, will engage with a corresponding groove 9 at the distal end of the second sleeve member 6, thereby both fixing the inner assembly radially. As the spring loaded sleeve abuts an abutment surface 31a on the pointed knob 31, the inner assembly will also be fixed in the longitudinal direction. The inner assembly is separated from the second sleeve member by pressing the button 4, whereby the spring loaded interconnection is relieved. The example of an interconnection and retaining configuration described above covers a first preferred embodiment of the invention. Obviously, many other configurations are possible, including other types of spring loaded locking mechanism, screw loaded mechanisms and magnetic interlocking systems.
The inner assembly further comprises force transmission means for transmitting and transforming the rotating movement of the roll 5 into a rotating movement of the applicating member 20 around its pivot. The force transmission means comprise a threaded spindle 28 (fig. 4) serially connected to the shaft 27. Preferably, the threaded spindle is formed on the shaft 27 itself. The shaft may be surrounded by an outer, stationary part 42, which is stabilised in relation to the shaft 27 by a preferably flexible muff 29. As shown in figs. 6, 9 and 10, the threaded spindle 28 of the shaft 27 is divided into two portions 28a and 28b, wherein one of them has a right-handed thread, and wherein the other has a left- handed thread. In the preferred embodiment of the invention, the first portion 28a is provided with a left-handed thread and the second portion with a left-handed thread. A displaceable or nu -like member 40, 41 is mounted on each portion of the spindle 28. Each of the nuts has an inner thread fitting the outer thread of the corresponding portion of the spindle. In the example shown in the figures, the nut 40 thus has a left-handed inner thread and the nut 41 has a right-handed inner thread. A wire or cable 46 is stretched between the two nuts, as shown clearly in figs. 8, 9 and 10. The wire extends from the first nut to the second nut around a pivot 21 of the applicating member 20, where it engages with the applicating member 20, and where it forms at least one closed loop around the pivot 21, which in a preferred embodiment comprises a screw or bolt 2la. A pivot pawl 21c extends through a hinge sleeve 21b comprised in a contact member 25. The pivot pawl 21c may preferably be formed from a portion of the screw 21a. In order to obtain a safe engagement of the wire 46 with the hinge sleeve 21b, the wire is guided through a bore 21c extending perpendicular to the longitudinal direction of the instrument 1 through the hinge sleeve 21b. The nuts are radially fixed in the outer, stationary part 42, whereby any rotation of the roll 5 and thus of the shaft 27 and the spindle 28 will result in a linear movement of the nuts 40 and 41 due to the tension in the wire 46. As the nuts are mounted on contrary directed threads, they will either move toward each other or from each other, when the shaft 27 is being rotated, while one of them will pull the wire 46, whereby the wire will always be subjected to tension. As the wire forms a closed loop around the pivot 21, the linear movement of the wire will result in a pivoting movement of the applicating member around the pivot 21.
As shown in figs. 3, 4 and 6, the applicating member 20 preferably comprises a rod-shaped portion 22 provided with a slit 23 for retaining a sheet of surgical sheet material 50 such as TachoComb®, as illustrated in fig. 7. At its proximal end it may have an outer part 25 comprising a cavity 24 for receiving one end of a roll of a sheet of surgical material rolled around the rod-shaped part 22, also referred to as sheet holding means. Preferably the outer part 25 is rotatably mounted on the contact member 25a. The first sleeve member 15 comprises an inner bore 16 extending through the first sleeve member. At its proximal end, the first sleeve member has a portion 17 with an increased outer diameter, which preferably comprises a trumpet-shaped portion 18. The outer surface of the straight portion 19 of the first sleeve member 15 is suited for going through a trocar during surgical intervention. The inner diameter of at least part of the trumpet-shaped part of the first sleeve member preferably increases towards the terminal surface so as to from an abutment surface for abutting the abutment surface 7 of the second sleeve member 6.
During minimally invasive surgical intervention, the first sleeve member 15 is inserted into the body of a patient through a trocar. The body assembly 2 is then inserted into the body of the patient through the bore 16 of the first sleeve member 15. The radial extension of the bore 16 adjacent to the proximal end of the first sleeve member 15 provides a funnel for easy introduction of the applicating member with a sheet of surgical material rolled up thereon. The unrolling of the sheet of surgical material 50 is preferably performed by catching the surgical material with one or more forceps and unrolling the surgical material, whereby the outer part 25 and the rod-shaped part 22 of the applicating member will rotate relative to the stationary part 25a. When an instrument according to the invention is used during normal surgery, where no trocar is present, an instrument according to the invention can be used without the first sleeve member 15.
The surface of the bore 16 and/or the outer surface of the second portion 6b of the sleeve member 6 may be provided with at least one and preferably with at least two O-rings received in grooves in the respective surfaces. Thereby it is avoided that any gas or liquid may ooze out of the body of the patient through the surgical opening, e.g., during lung or abdomen surgery. This or any other kind of proofing arrangement will create friction between the assembly 2 and the first sleeve member 15. An effect thereof, which might be an advantage in some cases is that the operator will have to apply force in order to move the assembly 2 through the bore 16 of the first sleeve member 15, whereby a more accurate control of the instrument in its longitudinal direction may be obtained. This applies also for a second and third embodiment of the invention described below. Obviously, in the second and third embodiment of the invention, the O-ring or O-rings may be received either in grooves in the surface of the bore 16 or in grooves in the outer surface of second portions 63 of a rod-shaped member 60 (figs. 13 and 21) .
The dimensions A, B and C indicated in fig. 10 may vary, and no restrictions concerning these instruments exist. However, for children surgery it is desired to reduce the length and the diameter of the instrument. In preferred embodiments of the instrument, the dimensions normally are as follows: 20 mm < A < 60 mm, 220 mm < B < 310 mm, 20 mm < C < 80 mm, while their ratios preferably are as follows:
0.06 < A/B < 0.3, 0.25 < A/C < 3, 2.75 < B/C < 15.5 In a specific embodiment of the invention, the dimensions are chosen as:
A/B = 0.15, A/C = 0.83, B/C = 5.52. The diameters of the rod-shaped parts preferably vary within any range relevant for surgical interventions. Normally, the following ranges are suitable:
Diameter d22 of the rod-shaped portion 22 of the applicating member: 1 mm < d22 < 8 mm
10 mm < d3a < 20 mm Outer diameter dl9 of the straight portion of the first sleeve member: 6 mm < dl9 < 14 mm In a specific embodiment of the invention, the diameters are chosen as: d22 = 4 mm, d3a = 15 mm, dl9 = 10 mm.
Turning now to a second preferred embodiment of an instrument 56 according to the invention, fig. 11 shows an assembly of the instrument. The instrument 56 comprises a sleeve member or a first sleeve member 15, shown in fig. 3, 12 and 20, and a body assembly 57, shown in fig. 13. The body assembly 57, shown in fig. 13, comprises an elongated, preferably rod- shaped member 60 and an applicating member 20 pivotally connected to the distal part 43 of an elongated unit (not shown separately in the drawings) . The elongated unit comprises the rod-shaped member 60 and the proximal part 43 of the applicating member.
The above description of the applicating member 20 and the first sleeve member 15 including the general remarks concerning these and any other parts and the entire instrument and its application also applies to the second preferred embodiment of the instrument. The rod-shaped member 60, shown in fig. 14, has at least a first portion 61 at its proximal end and a second portion 63 at its distal end, the second portion 63 having a reduced diameter compared to the first portion 61. At the cross sectional extension between the first and second portion, an abutment surface 62 is formed. An inner bore 64 extends in a longitudinal direction into the second portion 63 through at least part of the second portion. At least the distal end of the bore 64 is provided with an inner thread suited for engaging an outer thread 66 on a rod-shaped portion the distal part 43 of the elongated unit, so as to enable the instrument to be separated, e.g, for cleaning purposes.
Preferably, at least part of the first portion 61 of the rod- shaped member 60 forms a handle 61a. The handle 61a may have any cross sectional shape. In a preferred embodiment of the invention, the cross section of the handle is circular. However, the cross section may have any other shape, including the shape of the first preferred embodiment of the invention, described above. The abutment surface 62 is suited for abutting the abutment surface comprised in the bore of the first sleeve member, which is described in detail above.
The pivoting movement of the applicating member 20 may be activated by hand using other tools, e.g., forceps. The force needed to activate the pivoting movement is determined by the distortion of a tension bolt 21a, shown in figs. 16 and 17. The dimensions A, B and C indicated in fig. 16 may vary as described above in relation to the first preferred embodiment of the instrument. Suitable ranges of absolute and relative dimensions as well as the more preferred values of A, B and C as well as the diameters of the rod-shaped members are identical to those indicated in the above description concerning the first preferred embodiment of the invention.
Figs. 18, 19, 20, 21 and 22 illustrate a third embodiment of the invention. The instrument 75 comprises a sleeve member or a first sleeve member 15, shown in figs. 3, 12 and 20, and a body assembly 76, shown in fig. 21. The body assembly 76, comprises an elongated, preferably rod-shaped member 60 and an applicating member 20 pivotally connected by means of a spiral spring 70 to the distal part 43 of an elongated unit (not shown separately in the drawings) . The elongated unit comprises the rod-shaped member 60 and the proximal part 43 of the applicating member.
The spiral spring 70 establishes a pivotable link between the applicating member 20 and the rod-shaped member 60. The spiral spring allows the applicating member 20 to pivot in any direction into a position, where the free end of the rod- shaped portion 22 of the applicating member hits the rod- shaped member 60, or into any intermediate position. The pivoting movement of the applicating member 20 may be activated by hand using other tools, e.g., forceps. The force needed to activate the pivoting movement of the spring 70 is determined by its spring constant. In a preferred embodiment shown in figs. 18, 19, 21 and 22, a substantially plane surface 58 is formed at the proximal and the distal end of the spring so as to protect the surgical material from the spring material. In an alternative embodiment of the invention, the surface 58 is substituted by a rod-shaped member having a cavity to receive one end of a roll of a sheet of surgical material. Further, the rod-shaped portion of the applicating member may be rotatably mounted in relation to the spring 70.
2 mm < D < 20 mm while its ratio to the other dimensions preferably is as follows:
1 < A/D < 30 In a specific embodiment of the invention, the dimension D is chosen as: D = 12 mm so that:
A/D = 3.33, for A = 40 mm. The dimension B and C as well as the diameters of the rod-shaped preferably vary within the above mentioned ranges. The three embodiments of the instruments according to the invention are preferably made from medical certified steel, including stainless steel. Other materials suitable for medical application would be plastics, teflon or titanium or combinations thereof. Some parts may be made from hardened plastic, e.g., the bearing parts of the applicating member. Some parts, e.g., the wire material may also be made from special materials, e.g., titanium so as to reduce wear.
1. An instrument for the application of surgical material and comprising
a material applicating member pivotally connected to the distal end of the elongated unit, so as to allow movement of the applicating member relative to the elongated unit,
means for retaining the applicating member in a desired angular position during surgical intervention.
2. An instrument according to claim 1, wherein the applicating member comprises a rod-shaped portion.
3. An instrument according to claim 2, wherein at least the rod-shaped portion of the applicating member defines a slit extending longitudinally over at least part of the length of the applicating member.
4. An instrument according to any of claims 1-3, further comprising a first sleeve member having a bore allowing the applicating member and at least the distal portion of the elongated unit to pass therethrough, the sleeve member being adapted to be received in a trocar during surgical intervention.
5. An instrument according to any of the preceding claims, wherein a radial abutment surface is defined within the bore of the first sleeve member for cooperating with a corresponding abutment surface defined on the elongated unit so as to allow easier control of the elongated unit during surgical intervention.
6. An instrument according to claim 5, wherein the abutment surface defined in the bore is an annular abutment surface having an inner diameter increasing in the direction of the proximal end of the sleeve member.
7. An instrument according to claim 6, wherein the annular abutment surface is positioned adjacent to the proximal end of the sleeve member.
8. An instrument according to any of the preceding claims, wherein the applicating member is pivotal about one axis only.
9. An instrument according to any of the preceding claims, further comprising manoeuvring means for the pivotal movement of the applicating member, and operating means operating the manoeuvring means positioned at the proximal end of the elongated unit.
10. An instrument according to any of the preceding claims, wherein the elongated unit comprises an elongated rod member on which the applicating member is mounted and a second sleeve member surrounding the rod member and having a handle formed at its proximal end.
11. An instrument according to claim 10, wherein the abutment surface of the elongated unit is formed at the distal end of the handle.
12. An instrument according to claim 10 or 11, wherein the manoeuvring means comprise force transmission means interconnecting the operating means and the applicating member.
13. An instrument according to any of the claims 9-12 wherein the operating means are releasably connected to the manoeuvring means.
14. An instrument according to any of claims 9-13, wherein the operating means comprise a rotatably mounted adjustment member, the manoeuvring means being adapted to transform a rotating movement of the adjustment member into a rotating movement of the applicating member around its pivot at the distal end of the elongated unit.
15. An instrument according to claim 14, wherein the force transmission means comprise a spindle, which is mounted rotatably about its longitudinal axis and coextend with the rod member, and which has first threads formed thereon, and at least a first longitudinally displaceable member defining second threads engaging with the first threads, the displaceable member being interconnected with the applicating member, whereby rotation of the spindle member causes displacement of the first displaceable member and a pivoting movement of the applicating member.
16. An instrument according to claim 15, wherein the force transmission means further comprise third threads formed on the spindle, the first and third threads being right and left handed, respectively, or vice versa, and a second displaceable member defining fourth threads cooperating with the third threads and being interconnected with the applicating member.
17. An instrument according to claim 15 or 16, wherein the elongated rod member is mounted rotatably about its longitudinal axis in relation to the handle, the spindle being mounted on or forming part of the rod member.
18. An instrument according to any of claims 2-17, wherein at least the rod-shaped part of the applicating member is mounted rotatably about its longitudinal axis about a non-rotatable, proximal part of the applicating member.
19. An instrument according to claim 1, further comprising a sleeve member having a trumpet-shaped enlargement at its proximal end, and wherein the elongated unit comprises a shaft with a handle, and wherein the interconnection between the elongated unit and the applicating member comprises a contact member, which is movable connected to the elongated unit, and which may pivot at an angle of up to about 135° to each side from its straight position, and which is connected to the elongated unit by means of a tension bolt, and wherein the contact member comprises connection means, which are guided through the elongated unit to the upper exterior of the first portion of the elongated unit, and wherein the applicating member with a stopping means and a sheet holding means is pivotally connected to the contact member.
20. An instrument according to claim 19, wherein the connection means comprise a toothed wheel or a worm wheel.
21. An instrument according to claim 19, wherein the connection means comprise a Bowden cable.
22. An instrument according to claim 19, wherein the connection means comprises a chain cable.
23. An instrument according to any of claims 1-7, wherein the elongated unit has at least a proximal and a distal portion, the cross section of the proximal portion being greater than the cross section of the distal portion, so that an abutment surface is formed, and the proximal portion forms a handle.
24. An instrument according to claim 23, wherein at least the rod-shaped part of the applicating member is mounted rotatably about its longitudinal axis about a non-rotatable, proximal part of the applicating member.
25. An instrument according to claim 1, further comprising a sleeve member having a trumpet-shaped enlargement at its proximal end, and wherein the elongated unit comprises s shaft with a handle, and wherein the interconnection between the elongated unit and the applicating member comprises a contact member, which may pivot at an angle of up to about 135° to each side from its straight position, the tensile strength of the hinge mechanism being determined by a tension bolt, and wherein the applicating member comprising a stop screw and a sheet holding means is rotatably mounted on the contact member.
26. An instrument for the application of surgical material and comprising
a material applicating member pivotally connected to the distal end of the first elongated member,
wherein the elongated member has at least a first and a second portion, and wherein the second portion is surrounded by a sleeve member, and wherein the interconnection between the elongated member and the applicating member has an extension forming the applicating member, said extension being provided with a slit, the slit being suited for fastening a sheet of surgical material, the applicating member being pivotable at an angle of up to about 90° in any direction.
27. An instrument according to claim 26, wherein the interconnection between the applicating member and the elongated member comprises a spiral spring.
28. An instrument according to claim 27, wherein the free end portion of the spiral spring forms at least part of the second elongated member.
PCT/IB1996/001431 1995-12-13 1996-12-13 An instrument for the application of surgical material WO1997021383A1 (en)
WO1997021383A1 true WO1997021383A1 (en) 1997-06-19
WO2012159635A1 (en) 2011-05-24 2012-11-29 Nycomed Pharma As Rolled collagen carrier
WO2013174874A1 (en) 2012-05-24 2013-11-28 Takeda Nycomed As Apparatus and process for providing a coiled collagen carrier
US10485715B2 (en) 2012-05-24 2019-11-26 Takeda As Packaging for form-stable coiled collagen carrier
EP3243489A1 (en) 2011-05-24 2017-11-15 Takeda AS Rolled collagen carrier
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