Patent Description:
During surgical treatment, it is usually required to use medical fastening nail, wherein the medical fastening nail is enabled to be nailed into human organ or skin tissue, so as to assist suturing. The fastening nail used in the prior art is usually in simple spiral structure, and the shifting fork is enabled to be inserted into a loop at one end of the fastening nail, then the shifting fork is rotated, thereby screwing the fastening nail into the human organ or skin tissue. However, in the process of using the structure of the prior art to perform the rotation on the fastening nail, the end ring at the rear end of the fastening nail, that is, the distal end often called during surgical treatment, is usually in a circular structure, and the shifting fork is usually in a square structure, it is difficult to firmly combine the two, so that the phenomenon of fastening nail being loosened are easy to occur during the rotation process, thereby delaying the completion of the operation, increasing the risk of the patient during the operation, and being unfavorable for postoperative wound healing of the patient. <CIT> discloses a multiple anchor delivery tool. <CIT> discloses a device system and a method for transcatheter treatment of valvular regurgitation. <CIT> and <CIT> each discloses a surgical fastener. <CIT> discloses an apparatus for repairing an atrioventricular valve.

Certain optional features of the invention are defined in the dependent claims.

One of the objectives of the present invention includes providing a fastening nail, which can solve the technical problem that the fastening nail is easy to be loosened from the shifting fork when the fastening nail is screwed into the human tissue by using the shifting fork in the prior art, thereby delaying the completion time of the operation, increasing the risk of the patient during the operation, and being unfavorable for postoperative wound healing of the patient.

Another object of the present invention includes providing a fastening nail implanting apparatus to solve the technical problem that the fastening nail is easy to be loosened from the shifting fork when the fastening nail is screwed into the human tissue by using the shifting fork in the prior art, thereby delaying the completion time of the operation, increasing the risk of the patient during the operation, and being unfavorable for postoperative wound healing of the patient.

Another object of the present invention includes providing a medical instrument, which can improve the tightness of the combination between the fastening nail and the fastening nail implanting apparatus, thereby avoiding the loosening of the fastening nail from the fastening nail implanting apparatus, and facilitating quickly implanting the fastening nail into the human body.

To achieve the above objectives, the embodiments of the present invention use the following technical solutions.

In a first aspect, embodiments of the present invention provide a fastening nail, which comprises a nail seat and a spiral part, wherein a front end of the spiral part is formed as a tip, a rear end of the spiral part is fixedly connected to a front end of the nail seat, and a first positioning part is provided on an end surface of a rear end of the nail seat, wherein an annular groove is provided on an outer peripheral surface of the nail seat, and is configured to be tied with a polymer suture for surgery.

In an optional embodiment, the first positioning part comprises a positioning hole or a positioning protrusion provided on the end surface of the rear end of the nail seat.

In an optional embodiment, the positioning hole is oval, triangular, rectangular, hexagonal or waist-shaped; or, a section of the positioning protrusion is oval, triangular, rectangular, hexagonal or waist-shaped.

In an optional embodiment, a threaded hole is provided on a bottom wall of the positioning hole, the threaded hole is configured to be matched with a conveying apparatus in a manner of screw thread, and the threaded hole extends in a direction of a rotation axial line for rotation of the fastening nail.

In an optional embodiment, a center of the first positioning part is located on the rotation axial line for rotation of the fastening nail; or a plurality of first positioning parts are provided, and the plurality of first positioning parts are distributed in an array manner on the end surface of the rear end of the nail seat around the rotation axial line for rotation of the fastening nail.

In a second aspect, embodiments of the present disclosure provide a fastening nail implanting apparatus, which is configured to implant the fastening nail into a human body; the fastening nail comprises a nail seat and a spiral part, wherein a front end of the spiral part is formed as a tip, a rear end of the spiral part is fixedly connected to a front end of the nail seat, and a first positioning part is provided on an end surface of a rear end of the nail seat;.

The conveying cable comprises a casing pipe, a rotating cable and a spring member, and the rotating cable passes through the casing pipe;.

In an optional embodiment, a rear end of the dowel pin is connected to the front end of the rotating cable by a conical surface whose diameter gradually increases in a direction from the dowel pin to the rotating cable, and a conical abutting surface matched with the conical surface is provided on an inner wall surface of the front end of the casing pipe, the rotating cable is configured to drive the dowel pin to slide back and forth inside the casing pipe, and when the conical surface abuts against the conical abutting surface provided on the inner wall surface of the front end of the casing pipe, a front end of the dowel pin protrudes from the front end of the casing pipe and is matched with the threaded hole.

In an optional embodiment, an anti-reversion part is provided between the front end of the first rotating knob and the housing, and the anti-reversion part is configured to prevent the casing pipe from rotating in an opposite direction following a second rotating shell during the process that the dowel pin rotates in the opposite direction relative to the fastening nail and thus is disengaged from the fastening nail.

In an optional embodiment, the first rotating knob comprises an end connecting rod, a first shaft rod and a first rotating shell connected from front to back in sequence, and the end connecting rod and the first shaft rod are installed inside the housing; and the anti-reversion part comprises a pawl part and a ratchet structure provided on an outer peripheral surface of the first shaft rod, and a pawl of the pawl part and the ratchet structure are engaged with each other.

In an optional embodiment, the second rotating knob comprises a second shaft rod and a second rotating shell connected to a rear end of the second shaft rod, the second shaft rod is arranged inside the first rotating shell, and a rear end of the spring member is connected to a front end of the second shaft rod.

In an optional embodiment, an anti-rotation part is detachably connected between the first rotating knob and the second rotating knob, and the anti-rotation part is configured to make the first rotating knob and the second rotating knob rotate synchronously; and
a first positioning hole is provided on the end surface of the rear end of the first rotating knob, a second positioning hole penetrating through the second rotating knob in the front-rear direction is provided on the second rotating knob, and one end of the anti-rotation part extends into the first positioning hole after passing through the second positioning hole.

In an optional embodiment, the fastening nail implanting apparatus further comprises an advancing mechanism and a casing support, the advancing mechanism comprises an advancing handle, a first gear and a second gear;.

In an optional embodiment, the fastening nail implanting apparatus further comprises a first bending-adjustable sheathing canal mechanism, the first bending-adjustable sheathing canal mechanism comprises a first bending-adjustable handle and a first bending-adjustable sheathing canal, and the first bending-adjustable handle is installed on the base and located at front of the anchoring handle, the first bending-adjustable sheathing canal is installed on the first bending-adjustable handle, and the conveying cable passes through the first bending-adjustable sheathing canal and the first bending-adjustable handle.

In an optional embodiment, the first bending-adjustable handle comprises a bending-adjustable knob, a bending-adjustable screw and a bending-adjustable sliding block, wherein the bending-adjustable sliding block is sleeved on the bending-adjustable screw in a manner of screw thread, a bending-adjustable wire is connected between a front end of the first bending-adjustable sheathing canal and the bending-adjustable sliding block, and a rear end of the bending-adjustable screw is connected with the bending-adjustable knob, and the bending-adjustable knob is configured to drive the bending-adjustable screw to rotate, so that the bending-adjustable sliding block slides in a length direction of the bending-adjustable screw, thereby tightening or releasing the bending-adjustable wire, so as to adjust a degree of curvature of the first bending-adjustable sheathing canal.

In an optional embodiment, the fastening nail implanting apparatus further comprises a second bending-adjustable sheathing canal mechanism, the second bending-adjustable sheathing canal mechanism comprises a second bending-adjustable handle and a second bending-adjustable sheathing canal, wherein the second bending-adjustable handle is installed on the base and located between the first bending-adjustable handle and the anchoring handle, and the second bending-adjustable handle may slide back and forth relative to the base; and the second bending-adjustable sheathing canal is installed on the second bending-adjustable handle, and the second bending-adjustable sheathing canal passes through the first bending-adjustable handle and the first bending-adjustable sheathing canal, and the conveying cable passes through the second bending-adjustable sheathing canal and the second bending-adjustable handle.

In an optional embodiment, the first bending-adjustable sheathing canal mechanism further comprises a first support pipe fitting; and a first sealing gasket is provided inside the first bending-adjustable handle, and a via hole with an axial line extending in a front-rear direction is provided on the first sealing gasket; a front end of the first support pipe fitting is installed on a rear end of the first bending-adjustable handle, and the front end of the first support pipe fitting is inserted into the inside of the via hole, a lumen of the first support pipe fitting communicates with the first bending-adjustable sheathing canal, and the conveying cable passes through the first bending-adjustable sheathing canal and the lumen of the first support pipe fitting.

In an optional embodiment, the first bending-adjustable handle is rotatably installed on the base through a rotating structure; and/or the second bending-adjustable handle is rotatably installed on the base through the rotating structure, wherein the rotating structure comprises an upper shell, a lower shell and a fastener, the lower shell is fixed on the base, the upper shell and the lower shell are connected with each other by the fastener, and the first bending-adjustable handle and/or the second bending-adjustable handle is configured to be clamped between the upper shell and the lower shell or removed from a position between the upper shell and the lower shell in a state where the fastener is opened.

In a third aspect, embodiments of the present disclosure further provide a medical instrument, which comprises a fastening nail and a fastening nail implanting apparatus, wherein the fastening nail comprises a nail seat and a spiral part, a front end of the spiral part is formed as a tip, a rear end of the spiral part is fixedly connected to a front end of the nail seat, a first positioning part is provided on an end surface of a rear end of the nail seat, and an annular groove is provided on an outer peripheral surface of the nail seat, and is configured to be tied with a polymer suture for surgery. The fastening nail implanting apparatus is configured to implant the fastening nail into a human body; the fastening nail implanting apparatus comprises a base and an implanting component, and the implanting component comprises a conveying cable and an anchoring handle; a rear end of the conveying cable is connected to the anchoring handle, and a front end of the conveying cable is provided with a second positioning part capable of being snapped with the first positioning part; and the anchoring handle is installed on the base, and the anchoring handle is configured to be capable of driving the conveying cable to rotate under a first working condition, so as to drive the fastening nail snapped with the front end of the conveying cable to rotate synchronously with the conveying cable, and driving the conveying cable to release the fastening nail under a second working condition.

The beneficial effects of the fastening nail, the fastening nail implanting apparatus and the medical instrument provided by the embodiments of the present invention include the followings.

The first aspect of the embodiments of the present invention provides a fastening nail. Since the front end of the spiral part of the fastening nail is formed as a tip, the function of implanting the fastening nail into human organ or skin tissue can be realized by rotating the spiral part. In the above, in addition to the spiral part, the fastening nail also includes a nail seat, and a first positioning part is provided on the end surface of the rear end of the nail seat, so that the specific structure and shape of the first positioning part can be provided to be suitable for a shifting fork or other conveying apparatus for inputting the fastening nail into the human body, thereby improving the tightness of the combination between the fastening nail and the conveying apparatus, so as to avoid the loosening of the fastening nail from the conveying apparatus.

In addition, the fastening nail implanting apparatus provided by the second aspect of the embodiments of the present invention is configured to implant the fastening nail into the human body. Since the fastening nail implanting apparatus has the rear end of the conveying cable connected to the anchoring handle, the front end of the conveying cable is provided with a second positioning part capable of being snapped with the first positioning part; and the anchoring handle is installed on the base, and the anchoring handle is configured to be able to drive the conveying cable to rotate under the first working condition, thereby driving the fastening nail snapped with the front end of the conveying cable to rotate synchronously with the conveying cable, and drive the conveying cable to release the fastening nail under the second working condition, the fastening nail implanting apparatus is convenient to operate, and is conducive to quickly implanting the fastening nail into the human body, so as to shorten the operation time, and reduce the intraoperative risk, thereby facilitating the rapid postoperative healing of the patient.

The medical instrument provided by the third aspect of the embodiments of the present invention is not only convenient to operate, but also can improve the tightness of the combination between the fastening nail and the fastening nail implanting apparatus, which avoids the loosening of the fastening nail from the fastening nail implanting apparatus, facilitates the rapid implantation of fastening nail into the human body, so as to shorten the operation time, reduce the intraoperative risk, thereby facilitating the rapid postoperative healing of the patient.

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used for the description of the specific embodiments or the prior art will be briefly introduced below, and apparently, the drawings in the following description show some embodiments of the present invention, and those ordinarily skilled in the art still could obtain other drawings in light of these drawings, without using any inventive efforts.

Reference signs in drawings: <NUM>-fastening nail; <NUM>-nail seat; <NUM>-first positioning part; <NUM>-threaded hole; <NUM>-second positioning part; <NUM>-annular groove; <NUM>-spiral part; <NUM>-tip; <NUM>-base; <NUM>-conveying cable; <NUM>-casing pipe; <NUM>-rotating cable; <NUM>-spring member; <NUM>-dowel pin; <NUM>-conical surface; <NUM>-anchoring handle; <NUM>-first rotating knob; <NUM>-first rotating shell; <NUM>-first shaft rod; <NUM>-end connecting rod; <NUM>-second rotating knob; <NUM>-second rotating shell; <NUM>-second shaft rod; <NUM>-housing; <NUM>-sealing element; <NUM>-anti-reversion part; <NUM>-pawl part; <NUM>-ratchet structure; <NUM>-anti-rotation part; <NUM>-advancing mechanism; <NUM>-advancing handle; <NUM>-first gear; <NUM>-second gear; <NUM>-casing support; <NUM>-first bending-adjustable sheathing canal mechanism; <NUM>-first bending-adjustable handle; <NUM>-first bending-adjustable sheathing canal; <NUM>-second bending-adjustable sheathing canal mechanism; <NUM>-second bending-adjustable handle; <NUM>-second bending-adjustable sheathing canal; <NUM>-bending-adjustable knob; <NUM>-bending-adjustable screw; <NUM>-bending-adjustable sliding block; <NUM>-first sealing gasket; <NUM>-first support pipe fitting; <NUM>-rotating structure; <NUM>-upper shell; <NUM>-lower shell; <NUM>-fastener; <NUM>-front and rear adjustment structure; <NUM>-adjustment knob; <NUM>-gear; <NUM>-rack; <NUM>-position-limited plate.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention, obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the claimed scope of the present invention, but merely represents selected embodiments of the present invention.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once a certain item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer" etc. are based on the orientation or positional relations as shown in the drawings, or it is the orientation or positional relationship that the product of the present invention is usually placed in use, merely for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that related devices or elements have to be in the specific orientation, or configured or operated in a specific orientation, therefore, they should not be construed as limitations on the present invention. Besides, terms "first", and "second" etc. are only used to distinguish descriptions, but should not be construed as indicating or implying importance in relativity.

In the description of the present invention, it should also be noted that, unless otherwise definitely specified and limited, the terms "provide", "mount", and "connect" should be understood in a broad sense, for example, they can be fixed connection, detachable connection or integrated connection; they can be mechanical connection or electrical connection; they can be directly attached or indirectly attached by intermediate medium. Connection can be the internal communication between two components. For those ordinarily skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific situation.

Some embodiments of the present invention will be described in detail below with reference to the drawings. The embodiments described below and characteristics in the embodiments may be combined with each other without conflict.

The embodiments of the present invention provide a fastening nail. Referring to <FIG>, the fastening nail includes a nail seat <NUM> and a spiral part <NUM>. The front end of the spiral part <NUM> is formed as a tip <NUM>, the rear end of the spiral part <NUM> is fixedly connected to the front end of the nail seat <NUM>, and a first positioning part <NUM> is provided on the end surface of the rear end of the nail seat <NUM>.

In this embodiment, since the front end of the spiral part <NUM> is formed as a tip <NUM>, the function of implanting the fastening nail <NUM> into a human organ or skin tissue can be realized by rotating the spiral part <NUM>. In the above, in addition to the spiral part <NUM>, the fastening nail <NUM> also includes a nail seat <NUM>, and a first positioning part <NUM> is provided on the end surface of the rear end of the nail seat <NUM>, so that the specific structure and shape of the first positioning part <NUM> can be provided to be suitable for a shifting fork or other conveying apparatus for inputting the fastening nail into the human body, thereby improving the tightness of the combination between the fastening nail <NUM> and the conveying apparatus, so as to avoid the loosening of the fastening nail <NUM> from the conveying apparatus.

Optionally, the spiral part <NUM> and the nail seat <NUM> are connected by means of riveting or welding. The spiral part <NUM> is formed by extending the material in a spiral shape, and the section shape of the material of the spiral part <NUM> is not specifically limited, for example, it may be a triangle, a circle or a rectangle.

The nail seat <NUM> is in a substantially columnar structure. Optionally, the end surface of the front end of the nail seat <NUM> and the rear end of the spiral part <NUM> are fixedly connected by means of riveting or welding.

The number of the first positioning part <NUM> is not specifically limited, and may be one or multiple, for example, one first positioning part <NUM> is provided, and the center of the first positioning part <NUM> is located on the rotation axial line for rotation of the fastening nail <NUM>, for another example, a plurality of first positioning parts <NUM> may be provided, and the plurality of first positioning parts <NUM> are distributed in an array manner on the end surface of the rear end of the nail seat <NUM> around the rotation axial line for rotation of the fastening nail <NUM>.

In an optional implementation of this embodiment, the above-mentioned first positioning part <NUM> may be formed in various specific structural forms, for example, but not limited to, the first positioning part <NUM> includes a positioning hole provided on the end surface of the rear end of the nail seat <NUM>, and a positioning protrusion capable of being snapped with the positioning hole is provided at the front end of the conveying apparatus, so that the fastening nail <NUM> can be rotated through the positioning protrusion and the positioning hole, so as to implant the fastening nail <NUM> into human organ or skin tissue to assist suturing, wherein the positioning hole and the positioning protrusion are snapped with each other to ensure that the fastening nail <NUM> is not loosened from the conveying apparatus. Furthermore, the above-mentioned positioning holes may be one or more, and the corresponding positioning protrusions are in one-to-one correspondence to the positioning holes. In addition, optionally, the positioning hole may be of an ellipse or a polygon or the like, such as a triangle, a rectangle, a hexagon or a waist shape; in this embodiment, the positioning hole may be a waist-shaped hole.

Of course, the above-mentioned first positioning part <NUM> may also be formed in other specific structural forms, for example, but not limited to, the above-mentioned first positioning part <NUM> includes a positioning protrusion provided on the end surface of the rear end of the nail seat <NUM>, and a positioning hole capable of being snapped with the positioning protrusion is provided at the front end of the conveying apparatus, so that the fastening nail <NUM> can be rotated through the positioning protrusion and the positioning hole, so as to implant the fastening nail <NUM> into human organ or skin tissue to assist the function of suturing and the like. Furthermore, the above-mentioned positioning protrusions may be one or more, and the corresponding positioning holes are in one-to-one correspondence to the above positioning protrusions. In addition, optionally, the section of above-mentioned positioning protrusion may be of an ellipse or a polygon or the like, such as a triangle, a rectangle, a hexagon or a waist shape. In addition, in order to facilitate the locking of the distance between the two fastening nails <NUM>, as shown in <FIG>, an annular groove <NUM> may be provided on the outer peripheral surface of the nail seat <NUM>, by tying a polymer suture for surgery on the annular groove <NUM>, and by knotting a suture on two fastening nails <NUM>, such that the function of locking two fastening nails <NUM> is achieved, this method can be applied to an operation scenario where two parts of the tissue need to be closed, and the operation is convenient, which is beneficial to shorten the operation time.

In this embodiment, in order to further ensure the fixation and release of the fastening nail <NUM> and the conveying apparatus, a threaded hole <NUM> is provided on the end surface of the rear end of the nail seat <NUM>, and the threaded hole <NUM> is configured to be matched with a conveying apparatus in a manner of screw thread. Optionally, the first positioning part <NUM> includes a positioning hole provided on the end surface of the rear end of the nail seat <NUM>, the above-mentioned threaded hole <NUM> is provided on the bottom wall of the positioning hole, and the threaded hole <NUM> extends in a direction of the rotation axial line for rotation of the fastening nail <NUM>.

The embodiments of the present invention further provide a fastening nail implanting apparatus, referring to <FIG> in conjunction with <FIG>, the fastening nail implanting apparatus is configured to implant the fastening nail <NUM> provided by any one of the above-mentioned optional embodiments into a human body. The fastening nail implanting apparatus can be considered as a conveying apparatus in the above-mentioned embodiments.

Optionally, the fastening nail implanting apparatus may include a base <NUM> and an implanting component (not shown in the figure), and the implanting component includes a conveying cable <NUM> and an anchoring handle <NUM>. Further, the rear end of the conveying cable <NUM> is connected to the anchoring handle <NUM>, and the front end of the conveying cable <NUM> is provided with a second positioning part <NUM> capable of being snapped with the first positioning part <NUM>. The anchoring handle <NUM> is installed on the base <NUM>, and the anchoring handle <NUM> is configured to be capable of driving the conveying cable <NUM> to rotate under a first working condition, so as to drive the fastening nail <NUM> snapped with the front end of the conveying cable <NUM> to rotate synchronously with the conveying cable <NUM>, and driving the conveying cable <NUM> to release the fastening nail <NUM> under a second working condition.

It should be noted that, in the embodiments of the present invention, if the first positioning part <NUM> includes a positioning hole provided on the end surface of the rear end of the nail seat <NUM>, the second positioning part <NUM> includes a positioning protrusion provided at the front end of conveying cable <NUM>, and the positioning protrusion and the positioning hole on the nail seat <NUM> are matched with each other. If the first positioning part <NUM> includes a positioning protrusion provided on the end surface of the rear end of the nail base <NUM>, the second positioning part <NUM> includes a positioning hole provided at the front end of the conveying cable <NUM>, and the positioning hole and the positioning protrusion on the nail seat <NUM> are matched with each other. In addition, the first positioning part <NUM> and the second positioning part <NUM> are in one-to-one correspondence, and the shapes are adapted to each other, and both may be oval, triangular, rectangular, hexagonal, or waist-shaped or the like.

Referring to <FIG>, in an optional implementation of this embodiment, optionally, the conveying cable <NUM> may include a casing pipe <NUM>, a rotating cable <NUM> and a spring member <NUM>, and the rotating cable <NUM> passes through the casing pipe <NUM>.

Referring to <FIG>, <FIG> and <FIG>, the anchoring handle <NUM> may include a housing <NUM>, a first rotating knob <NUM> and a second rotating knob <NUM>. The housing <NUM> is installed on the base <NUM>, the front end of the first rotating knob <NUM> is installed inside the housing <NUM>, and the first rotating knob <NUM> may rotate relative to the housing <NUM>. A through hole penetrating through the first rotating knob <NUM> in a front-rear direction is provided on the first rotating knob <NUM>, a front end of the second rotating knob <NUM> is arranged in a rear end of the first rotating knob <NUM>, it should be understood that the front end of the second rotating knob <NUM> extends into the rear end of the first rotating knob <NUM> through the above-mentioned through hole, and the second rotating knob <NUM> may rotate relative to the first rotating knob <NUM>; and the rear end of the first rotating knob <NUM> and the second rotating knob <NUM> are both located outside the housing. The rear end of the casing pipe <NUM> is connected with the front end of the first rotating knob <NUM>, and a rear end of the rotating cable <NUM> is connected with the front end of the second rotating knob <NUM> through the spring member <NUM>. Continuing to refer to <FIG>, the second positioning part <NUM> is provided at a front end of the casing pipe <NUM>, a front end of the rotating cable <NUM> is connected with a dowel pin <NUM>, the threaded hole <NUM> is provided on the end surface of the rear end of the nail seat <NUM>. Optionally, the first positioning part <NUM> in this embodiment includes a positioning hole provided on the end surface of the rear end of the nail base <NUM>, and the above-mentioned threaded hole <NUM> is provided on the bottom wall of the positioning hole. The second positioning part <NUM> includes a positioning protrusion protruding from the front end of the casing pipe <NUM>, the positioning protrusion is matched with the positioning hole of the nail seat <NUM>, the positioning protrusion is provided with an opening communicating with the inside of the casing pipe <NUM>, wherein the opening is configured in such a way that the dowel pin <NUM> penetrates outward from the interior of the casing pipe <NUM>. An external thread matched with the threaded hole <NUM> is provided on the outer peripheral surface of the dowel pin <NUM>.

Further, as shown in <FIG> and <FIG>, a rear end of the dowel pin <NUM> is connected to the front end of the rotating cable <NUM> by a conical surface <NUM> whose diameter gradually increases in a direction from the dowel pin <NUM> to the rotating cable <NUM>, and the other conical abutting surface (as not shown in the figure) matched with the conical surface <NUM> is provided on an inner wall surface of the front end of the casing pipe <NUM>. The rotating cable <NUM> may drive the dowel pin <NUM> to slide back and forth inside the casing pipe <NUM>, and when the above-mentioned conical surface <NUM> abuts against the other conical abutting surface provided on the inner wall surface of the front end of the casing pipe <NUM>, the dowel pin <NUM> protrudes to the foremost end position relative to the casing pipe <NUM>, at this time, a front end of the dowel pin <NUM> protrudes from the front end of the casing pipe <NUM> and is matched with the threaded hole <NUM> on the rear end of the nail seat <NUM>.

When the anchoring handle <NUM> is used to implant the fastening nail <NUM> into the human body, the dowel pin <NUM> is threadedly connected to the inside of the threaded hole <NUM> provided on the end surface of the rear end of the nail seat <NUM> of the fastening nail <NUM>, and the first positioning part <NUM> on the nail seat <NUM> of the fastening nail <NUM> is enabled to be snapped with the second positioning part <NUM> of the front end of the casing pipe <NUM>, at this time, the conical abutting surface provided on the inner wall surface of the front end of the casing pipe <NUM> abuts against the conical surface <NUM>, the spring member <NUM> is in a stretched state, and the rear end surface of the nail seat <NUM> of the fastening nail <NUM> abuts against the front end surface of the casing pipe <NUM>. By rotating the first rotating knob <NUM>, the casing pipe <NUM> can be rotated, so that the casing pipe <NUM> drives the fastening nail <NUM> to rotate forward, so as to nail the front end of the fastening nail <NUM> into the human organ or skin tissue. After the rotation is in place, by rotating the second rotating knob <NUM> in an opposite direction, the dowel pin <NUM> can be enabled to rotate inside the casing pipe <NUM> relative to the screwed fastening nail <NUM>, so that the dowel pin <NUM> can be separated from the fastening nail <NUM>. At this time, the dowel pin <NUM> is retracted to the inside of the casing pipe <NUM> under the action of the elastic restoring force of the spring member <NUM>. In this embodiment, by providing the spring member <NUM>, the front end of the dowel pin <NUM> located outside the casing pipe <NUM> can be prevented from damaging the human body after the dowel pin <NUM> is separated from the fastening nail <NUM>; and simultaneously, by providing the spring member <NUM>, it can be ensured that before the dowel pin <NUM> is separated from the fastening nail <NUM>, the dowel pin <NUM> always has a movement tendency of pulling the fastening nail <NUM> backward to make the rear end surface of the nail seat <NUM> of the fastening nail <NUM> abut against the front end surface of the casing pipe <NUM>, so as to ensure that when the dowel pin <NUM> is separated from the fastening nail <NUM> , the fastening nail <NUM> is sleeved on the casing pipe <NUM>, and the casing pipe <NUM> controls the fastening nail <NUM> not to rotate during the reverse rotation of the dowel pin <NUM> relative to the fastening nail <NUM>, thereby ensuring that the dowel pin <NUM> can be smoothly disengaged from the fastening nail <NUM>.

Referring to <FIG> and <FIG>, in an optional embodiment of the present invention, an anti-reversion part <NUM> is provided between the front end of the first rotating knob <NUM> and the housing <NUM>, and/or, an anti-rotation part <NUM> is detachably connected between the first rotating knob <NUM> and the second rotating knob <NUM>. In the above, "and/or" means that only the former or only the latter or simultaneously both the former and the latter are provided in the structure of "an anti-reversion part <NUM> provided between the front end of the first rotating knob <NUM> and the housing <NUM>" and the structure of "an anti-rotation part <NUM> detachably connected between the first rotating knob <NUM> and the second rotating knob <NUM>".

There are various specific structural forms of the above anti-reversion part <NUM>. Optionally, as shown in <FIG> and <FIG>, the first rotating knob <NUM> may comprise an end connecting rod <NUM>, a first shaft rod <NUM> and a first rotating shell <NUM> connected from front to back in sequence, and the end connecting rod <NUM> and the first shaft rod <NUM> are mounted inside the housing <NUM>. Optionally, the first rotating shell <NUM> is detachably connected to one end of the first shaft rod <NUM>, and the other end of the first shaft rod <NUM> is detachably connected to the end connecting rod <NUM>. In the above, one end of the first rotating shell <NUM> is in a cylindrical structure, a snapping opening is provided on the peripheral wall of the cylindrical structure thereof, the peripheral wall of one end of the first shaft rod <NUM> is provided with a snapping block, and one end of the first shaft rod <NUM> extends into one end of the first rotating shell <NUM>, and the snapping block and the snapping opening are snapped with each other. The other end of the first shaft rod <NUM> is protrudingly provided with a protruding part along axial line thereof, and the protruding part is matched with the snapping hole at one end of the end connecting rod <NUM>. Therefore, the end connecting rod <NUM>, the first shaft rod <NUM> and the first rotating shell <NUM> are firmly connected to each other, and are easy to disassemble and assemble with each other. In addition, the anti-reversion part <NUM> may comprise a pawl part <NUM> and a ratchet structure <NUM> provided on an outer peripheral surface of the first shaft rod <NUM>, and a pawl of the pawl part <NUM> and the ratchet structure <NUM> are engaged with each other. Referring to <FIG>, one end of the pawl part <NUM> away from the ratchet structure <NUM> penetrates out of the housing <NUM>. The second rotating knob <NUM> includes a second shaft rod <NUM> and a second rotating shell <NUM> connected to the rear end of the second shaft rod <NUM>. In the above, the second shaft rod <NUM> is arranged inside the first rotating shell <NUM>, and the rear end of the spring member <NUM> is connected to the front end of the second shaft rod <NUM>. In an optional embodiment of the present invention, by providing the anti-reversion part <NUM>, the casing pipe <NUM> can be enabled to only follow the second rotating shell <NUM> to rotate in a forward direction, in the process of operating the second rotating shell <NUM> to rotate, so that the dowel pin <NUM> rotates in an opposite direction relative to the fastening nail <NUM> and thus is disengaged from the fastening nail <NUM>, it is ensured that the casing pipe <NUM> does not rotate in the opposite direction to follow the second rotating shell <NUM>, thereby ensuring that the dowel pin <NUM> is smoothly separated from the fastening nail <NUM>. Of course, the structure of the above anti-reversion part <NUM> can also be other structures, for example, the above-mentioned pawl part <NUM> is replaced with a pawl provided on the inner wall of the housing <NUM>, and the pawl is enabled to be engaged with the ratchet structure <NUM>.

In addition, there are various specific structural forms of the above anti-rotation part <NUM>, optionally, as shown in <FIG> and <FIG>, an anti-rotation part <NUM> is detachably connected between the first rotating knob <NUM> and the second rotating knob <NUM>. The anti-rotation part <NUM> is configured to make the first rotating knob <NUM> and the second rotating knob <NUM> rotate synchronously. Optionally, a first positioning hole can be provided on the end surface of the rear end of the first rotating knob <NUM>, a second positioning hole penetrating through the second rotating knob <NUM> in the front-rear direction can be provided on the second rotating knob <NUM>, and one end of the anti-rotation part <NUM> extends into the first positioning hole after passing through the second positioning hole, so as to avoid rotation of the second rotating knob <NUM> relative to the first rotating knob <NUM>, when the first rotating knob <NUM> is rotated to implant the fastening nail <NUM> into the human organ or skin tissue. When the second rotating knob <NUM> needs to be rotated separately to make the dowel pin <NUM> separated from the fastening nail <NUM>, the anti-rotation part <NUM> can be pulled out.

Continuing to refer to <FIG> and <FIG>, in an optional embodiment of the present invention, the fastening nail implanting apparatus further may comprise an advancing mechanism <NUM> and a casing support <NUM>, wherein the advancing mechanism <NUM> comprises an advancing handle <NUM>, a first gear <NUM> and a second gear <NUM>. The advancing handle <NUM> is fixedly connected to the casing support <NUM>, the rotating cable <NUM> passes through a lumen of the casing support <NUM>, and the front end of the first rotating knob <NUM> is rotatably connected to a rear end of the lumen of the casing support <NUM>, an avoidance hole for avoiding the pawl part <NUM> is provided on the casing support <NUM>. The first gear <NUM> is provided on the outer peripheral surface of the advancing handle <NUM>, the second gear <NUM> is provided on the outer peripheral surface of the end connecting rod <NUM> of the first rotating knob <NUM>, and the first gear <NUM> and the second gear <NUM> are engaged with each other, and a window for exposing the second gear <NUM> is provided on the casing support <NUM>. In an optional embodiment of the present invention, by providing the advancing mechanism <NUM>, during the process of implanting the fastening nail <NUM> into the human organ or skin tissue through the first rotating knob <NUM>, the casing support <NUM> can be enabled to slide forward relative to the house <NUM>, so as to prevent the casing support <NUM> from providing a pulling force that pulls the fastening nail <NUM> backward, and to ensure that the fastening nail <NUM> is quickly screwed into human organ or skin tissue, optionally, the thread pitch of the external thread provided on the dowel pin <NUM> is equal to the tooth space of the first gear <NUM> provided on the advancing mechanism <NUM>, so that the distance that the casing support <NUM> slides forward relative to the housing <NUM> is equal to the distance that the fastening nail <NUM> is nailed into the human organ or skin tissue.

In addition, as shown in <FIG>, a sealing element <NUM> is also provided inside the housing <NUM>, and the casing pipe <NUM> passes through the sealing element <NUM>, so as to prevent blood leakage.

In addition, referring to <FIG> and <FIG>, in conjunction with <FIG> and <FIG>, and especially referring to <FIG>, in an optional embodiment of the present invention, the fastening nail implanting apparatus further may comprise a first bending-adjustable sheathing canal mechanism <NUM>, wherein the first bending-adjustable sheathing canal mechanism <NUM> may comprise a first bending-adjustable handle <NUM> and a first bending-adjustable sheathing canal <NUM>, and the first bending-adjustable handle <NUM> is installed on the base <NUM> and located at front of the anchoring handle <NUM>, the first bending-adjustable sheathing canal <NUM> is installed on the first bending-adjustable handle <NUM>, and the conveying cable <NUM> passes through the first bending-adjustable sheathing canal <NUM> and the first bending-adjustable handle <NUM>. Optionally, the first bending-adjustable handle <NUM> comprises a bending-adjustable knob <NUM>, a bending-adjustable screw <NUM> and a bending-adjustable sliding block <NUM>, wherein the bending-adjustable sliding block <NUM> is sleeved on the bending-adjustable screw <NUM> in a manner of screw thread, a bending-adjustable wire is connected between a front end of the first bending-adjustable sheathing canal <NUM> and the bending-adjustable sliding block <NUM>, and a rear end of the bending-adjustable screw <NUM> is connected with the bending-adjustable knob <NUM>, by rotating the bending-adjustable knob <NUM>, the bending-adjustable screw <NUM> can be enabled to be rotated, so that the bending-adjustable sliding block <NUM> slides in a length direction of the bending-adjustable screw <NUM>, thereby tightening or releasing the bending-adjustable wire, so as to achieve the function of adjusting a degree of curvature of the first bending-adjustable sheathing canal <NUM>.

Further preferably, the fastening nail implanting apparatus further may comprise a second bending-adjustable sheathing canal mechanism <NUM>, the second bending-adjustable sheathing canal mechanism <NUM> may comprise a second bending-adjustable handle <NUM> and a second bending-adjustable sheathing canal <NUM>, wherein the second bending-adjustable handle <NUM> is installed on the base <NUM> and located between the first bending-adjustable handle <NUM> and the anchoring handle <NUM>, and the second bending-adjustable handle <NUM> may slide back and forth relative to the base <NUM>. The second bending-adjustable sheathing canal <NUM> is installed on the second bending-adjustable handle <NUM>, and the second bending-adjustable sheathing canal <NUM> passes through the first bending-adjustable handle <NUM> and the first bending-adjustable sheathing canal <NUM>, and the conveying cable <NUM> passes through the second bending-adjustable sheathing canal <NUM> and the second bending-adjustable handle <NUM>. The bending-adjustable principle of the second bending-adjustable handle <NUM> is the same as that of the first bending-adjustable handle <NUM>, thus, the second bending-adjustable handle <NUM> can be used to assist the first bending-adjustable handle <NUM> to perform secondary adjustment on the implanting angle, the first bending-adjustable handle <NUM> can make the implanting angle bended by <NUM> degrees before implantation, on this basis, and the second bending-adjustable handle <NUM> can be bended by <NUM> degrees before implantation. In addition, in this embodiment, there are various specific arrangement structure for the second bending-adjustable handle <NUM> capable of sliding back and forth relative to the base <NUM>, for example, but not limited to, as shown in <FIG>, the second bending-adjustable handle <NUM> is connected to the base <NUM> through a front and rear adjustment structure <NUM>, wherein the front and rear adjustment structure <NUM> includes an adjustment knob <NUM>, a gear <NUM>, a rack <NUM> and a position-limited plate <NUM>, the rack <NUM> is provided at the bottom of the second bending-adjustable handle <NUM>, one end of the adjustment knob <NUM> is fixedly connected with a rotating shaft, and the rotating shaft passes through the position-limited long hole on the position-limited plate <NUM>, the gear <NUM> is fixed on one end of the rotating shaft away from the adjustment knob <NUM>, the position-limited plate <NUM> is fixed on the base <NUM>, the rotating shaft can slide along the position-limited long hole and is located at two position-limited positions of the position-limited long hole, at one of the position-limited positions, the gear <NUM> can be engaged with the rack <NUM>, and the rack <NUM> extends in the front-rear direction, the adjustment knob <NUM> is rotated, and then the second bending-adjustable handle <NUM> can move back and forth relative to the base <NUM>, and at the other position-limited position, the gear <NUM> can be disengaged from the rack <NUM>, and at this time, the second bending-adjustable handle <NUM> can be removed relative to the base <NUM>; through the above structure, the first bending-adjustable handle <NUM> can be used to initially adjust the implanting position and the implanting angle, and then the second bending-adjustable handle <NUM> can be used to finely adjust the implanting position and the implanting angle, thereby increasing the precision of implanting position.

In addition, for the convenience of operation, in an optional embodiment of the present invention, the first bending-adjustable handle <NUM> may also be rotatably installed on the base <NUM> through the rotating structure <NUM>; and/or the second bending-adjustable handle <NUM> may be rotatably installed on the base <NUM> through the rotating structure <NUM>, wherein "and/or" means that only the former or only the latter or simultaneously both the former and the latter are provided in the structure of "the first bending-adjustable handle <NUM> rotatably installed on the base <NUM> through the rotating structure <NUM>" and the structure of "the second bending-adjustable handle <NUM> rotatably installed on the base <NUM> through the rotating structure <NUM>". Optionally, as shown in <FIG>, the rotating structure <NUM> may include an upper shell <NUM>, a lower shell <NUM> and a fastener <NUM>, the lower shell <NUM> is fixed on the base <NUM>, and the upper shell <NUM> and the lower shell <NUM> are connected with each other by the fastener <NUM>, by opening the fastener <NUM>, the bending-adjustable handle of the bending-adjustable sheathing canal mechanism can be enabled to be clamped between the upper shell <NUM> and the lower shell <NUM> or the bending-adjustable handle can be removed from a position between the upper shell <NUM> and the lower shell <NUM>, and the bending-adjustable handle of the bending-adjustable sheathing canal mechanism can rotate between the upper shell <NUM> and the lower shell <NUM>, so that the implanting angle can be adjusted more conveniently.

Furthermore, in order to facilitate the conveying cable <NUM> to smoothly pass through the bending-adjustable handle of the bending-adjustable sheathing canal, referring to <FIG>, in an optional embodiment of the present invention, the first bending-adjustable sheathing canal mechanism <NUM> further comprise a first support pipe fitting <NUM>; and a first sealing gasket <NUM> is provided inside the first bending-adjustable handle <NUM>, and a via hole with an axial line extending in a front-rear direction is provided on the first sealing gasket <NUM>; a front end of the first support pipe fitting <NUM> is installed on a rear end of the first bending-adjustable handle <NUM>, and the front end of the first support pipe fitting <NUM> is inserted into the inside of the via hole, a lumen of the first support pipe fitting <NUM> communicates with the first bending-adjustable sheathing canal <NUM>, and the conveying cable <NUM> passes through the first bending-adjustable sheathing canal <NUM> and the lumen of the first support pipe fitting <NUM>, thus, the first support pipe fitting <NUM> can be used to open the via hole provided on the first sealing gasket <NUM> in advance, so that the detachable process of the conveying cable <NUM> is simpler and more convenient, in addition, the second bending-adjustable sheathing canal mechanism <NUM> can further include a second support pipe fitting having the same structure as the first support pipe fitting <NUM>.

The embodiments of the present invention also provide a medical instrument, the medical instrument comprises a fastening nail <NUM> and a fastening nail implanting apparatus provided in the above-mentioned embodiments, the fastening nail implanting apparatus is configured to implant the fastening nail <NUM> into a human body.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that: the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced.

Claim 1:
A fastening nail, comprising a nail seat (<NUM>) and a spiral part (<NUM>),
wherein a front end of the spiral part (<NUM>) is formed as a tip (<NUM>), a rear end of the spiral part (<NUM>) is fixedly connected to a front end of the nail seat (<NUM>), and a first positioning part (<NUM>) is provided on an end surface of a rear end of the nail seat (<NUM>),
characterized in that an annular groove (<NUM>) is provided on an outer peripheral surface of the nail seat (<NUM>), and is configured to be tied with a polymer suture for surgery.