CN114699157A - Patella fracture thread passing device with threading, tightening and knotting functions - Google Patents
Patella fracture thread passing device with threading, tightening and knotting functions Download PDFInfo
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- CN114699157A CN114699157A CN202210456843.7A CN202210456843A CN114699157A CN 114699157 A CN114699157 A CN 114699157A CN 202210456843 A CN202210456843 A CN 202210456843A CN 114699157 A CN114699157 A CN 114699157A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8861—Apparatus for manipulating flexible wires or straps
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Abstract
The invention discloses a patella fracture thread passing device with threading and tightening knotting functions, which comprises: the device comprises a grab handle, a connecting rod, an arc-section rod, a transition section, a micro motor, an outer cylinder, a rotating shaft rod, a patella fixing claw and a patella fixing clamp; the device can be used in the patella internal fixation under an arthroscope and can also be used in the tissue cutting patella internal fixation; the radian of the thread passing device can be automatically and flexibly adjusted according to the radian of the patellar bone surface, so that the thread passing device can be better attached to the patellar bone surface, and the obstruction in thread passing is reduced; in addition, the knotting device part is designed, and the steel wire or the fixed wire is tightened through electric control, and the tightened part of the fixed wire is coagulated and fixed by medical thermoplastic resin; when the inner fixing wire or the steel wire is knotted, the tightening force can be monitored and mastered in real time, and the plastic wire clamp can be used for compressing and fixing the inner fixing wire knot; the patella fixing clamp can clamp and fix the fractured patella.
Description
Technical Field
The invention belongs to the field of patellar fracture internal fixation instruments, and particularly relates to a patellar fracture thread passing device with threading, tightening and knotting functions.
Background
The patellar cartilage surface and the front of the femoral condyle form a joint, which is beneficial to knee extension activities, and belongs to internal joint fracture if patellar fracture occurs; the complete normal anatomical relationship of the articular surfaces is required to be restored, the tendinosus of the quadriceps femoris which is broken together is repaired, the function is preserved, and the complications of osteoarthritis are prevented;
the current surgical methods for patellar fracture are mainly divided into the following: internal fixation with string purse-string suture, internal fixation with steel wire, internal fixation with screw, etc.; in the internal fixation of patella fracture, the broken end is often required to be fixed by using a steel wire or a wire, the steel wire or the wire is required to be fit between the patella and the femur to penetrate through the patella, but the following problems exist when the operation is carried out at present: 1) the structure of the existing patella threading device is straight or fixed in radian, but because the bone surface of the patella has a certain radian and different radians of different individuals are different, the patella threading device cannot be adjusted according to the own radian of the patella in the threading process, so that the threading process is difficult and the time consumption is long; 2) after the fixed line or the steel wire bypasses the patella, the steel wire or the fixed line needs to be manually tightened, and then knotted and fixed, so that the process is complicated and time-consuming, and the tightening degree of the fixed line can not be guaranteed through manual operation.
Disclosure of Invention
In order to solve the technical problems, the invention designs the patella fracture thread guide with threading, tightening and knotting functions, which can be used in the patella internal fixation under arthroscope and also can be used in the patella internal fixation after tissue incision; the radian of the thread passing device can be automatically and flexibly adjusted according to the radian of the patellar bone surface, so that the thread passing device can be better attached to the patellar bone surface, and the obstruction in thread passing is reduced; in addition, the knotting device part is designed, and the steel wire or the fixed wire is tightened through electric control, and the tightened part of the fixed wire is coagulated and fixed by medical thermoplastic resin;
in order to achieve the technical effects, the invention is realized by the following technical scheme: a have both threading and tighten up line passing device of patella fracture who ties, includes: the device comprises a grab handle, a connecting rod, an arc-section rod, a transition section, a micro motor, an outer cylinder, a rotating shaft rod, a patella fixing claw and a patella fixing clamp;
the left end of the grab handle is fixedly connected with a connecting rod, the left end of the connecting rod is detachably connected with an arc-section rod, the arc-section rod is divided into a plurality of sections, the sections are movably hinged, and the arc-section rod at the rightmost side is detachably connected with the left end of the connecting rod; the left end of the connecting rod is also detachably connected with an automatic knotting part, wherein the automatic knotting part consists of a transition section, a micro motor, an outer cylinder, a rotating shaft rod and a wire knot fixing part, the right end of the transition section is detachably connected with the left end of the connecting rod, the left end of the transition section is fixedly connected with the micro motor, the micro motor is detachably connected with the left end of the outer cylinder, and particularly, a rotor part of the micro motor is positioned in the outer cylinder; the inner part of the outer cylinder is detachably connected with a rotating shaft rod;
preferably, the head end of the first section of the arc-section rod positioned at the leftmost side is of a conical structure, and an inwards concave circular wire hooking port is formed in the head end;
preferably, the arc-segment rods are connected with each other through a hinge structure, the hinge structure is that a convex block structure of the previous arc-segment rod is embedded into a groove structure of the next arc-segment rod, and then a screw rod penetrates through the convex block and the groove, wherein the opposite side of a screw on the screw rod is locked by a nut; the nut is a hexagonal nut;
preferably, a slot for placing the inner hexagonal rod is formed in the grab handle; an inner hexagonal rod is detachably arranged in the inner cavity;
preferably, a rotating shaft rod channel and an injection pipe channel are formed in the outer cylinder, and the tail end of the rotating shaft rod is detachably mounted on a rotor part of the micro motor after penetrating through the rotating shaft rod channel; the injection pipe is detachably arranged in the injection pipe channel; the injection tube passage and the injection tube constitute a knot securing portion;
preferably, the head end of the rotating shaft rod is connected with two symmetrical wire hooks;
preferably, an injection pipe inlet is formed in the side wall of the outer cylinder and is close to the micro motor, the injection pipe enters the outer cylinder from the injection pipe inlet through an injection pipe channel, and the head end of the injection pipe can extend out of the left end of the outer cylinder;
preferably, the knot fixing part consists of a chuck, an outer rod, a chuck transmission rod, a spring and a plastic wire clamp; the inner part of the outer barrel is provided with a chuck transmission rod channel, a channel opening is connected with an outer rod, the outer rod is hollow, two chuck transmission rods penetrate through the chuck transmission rod channel and the inner part of the outer rod, and the two chucks are respectively connected to the outer rod and the chuck transmission rod; the tail end of the chuck transmission rod is led out of the tail part of the outer cylinder to form a connecting handle; a spring is connected between the tail end of the chuck transmission rod and the bottom end of the chuck transmission rod channel; the plastic wire clamp is detachably arranged between the two chucks;
preferably, the micro motor part is provided with a display screen and is integrated with a torque sensor, a microprocessor and a D/A converter; the torque sensor monitors torsion moment in the rope knotting process, the torsion moment is converted into rope torsion force after being processed by a built-in program of the microprocessor, and the rope torsion force is converted into a digital signal by the D/A converter to be displayed;
preferably, the patella fixing claw is provided with a thread passing hole.
Another objective of the present invention is to provide a method for using a patella fracture thread guide with threading and tightening and knotting functions, comprising the following steps:
s1: before threading, correspondingly fine-adjusting the bending radian of the arc-section rod according to the patellar bone surface radian, specifically taking out the inner hexagonal rod, unscrewing the screw cap, fine-adjusting section by section, and then tightening the screw cap; achieving the required radian modeling;
s2: hooking the steel wire or the internal fixing wire in a hook wire port of the head segment arc segment rod, then holding the grab handle by hand, fitting the patella surface, penetrating between the patella and the femur, simultaneously bringing the steel wire or the internal fixing wire to the other side, and pulling out the other end of the steel wire or the internal fixing wire through the threader;
s3: after the position of the steel wire or the inner fixing wire is adjusted, the arc section rod is taken down and replaced by an automatic knotting part, specifically, the transition section is arranged on the connecting rod;
s4: respectively hooking and winding two wire hooks on the rotating shaft rod at two ends of the steel wire or the inner fixing wire, then starting the micro motor to drive the rotating shaft rod to start rotating, simultaneously driving the steel wire or the inner fixing wire to rotate into a twist shape, and simultaneously tightening and attaching the steel wire or the inner fixing wire to the bone surface;
s5: after S4, if the steel wire is used for fixing, the redundant part is directly cut off and then folded flat to the position where the tissue is not affected; if the internal fixing line is used, firstly keeping the twist shape unchanged, taking an unused disposable injection tube, sending the disposable injection tube from the injection tube channel until the head end of the injection tube reaches the part of the twist shape internal fixing line close to the bone surface, at the moment, injecting medical thermoplastic resin softened by heating from the injection tube, injecting quantitative medical thermoplastic resin to the specified position of the internal fixing line and the bone surface, stopping injection, and taking out the injection tube; when the medical thermoplastic resin is cooled to room temperature, the medical thermoplastic resin is condensed into solid, and the twisted internal fixing wire is fixed to keep the medical thermoplastic resin in a tightened state; cutting off redundant internal fixing lines;
s6: the inner fixing wire can also be fixed by a clamp head matched with a wire knot fixing part of the plastic wire clamp; specifically, the plastic wire clamp is arranged between two chucks, the twisted wire knot is placed between the plastic wire clamps, the handle is held by the outside, the two chucks are pulled backwards to be close to and clamped, and the plastic wire clamp is flattened to compress the twisted wire knot.
The invention has the beneficial effects that:
by using the patella fracture thread passing device with threading and tightening and knotting functions, the radian of the thread passing device can be flexibly adjusted by self according to the radian of the patella bone surface, so that the thread passing device can be attached to the patella bone surface as much as possible, and the obstruction in the thread passing process is reduced; the automatic knotting part is used for tightening the steel wire or the inner fixing wire by using the electric micro motor, so that compared with manual tightening, the automatic knotting part is better in fastening effect and higher in speed; particularly, for the internal fixation wire, the fastening and maintenance are realized through hospital thermoplastic resin after the internal fixation wire is tightened; for the fixation of the internal fixation knot, a clamping head can be used for matching with a knot fixing part of a plastic wire clamp type, so that various options are provided; in addition, a torque sensor is designed to monitor the torque in real time aiming at the torsion tightening of the inner fixed wire or the steel wire, and the tightening force can be accurately mastered in real time after the processing of a built-in program of a microprocessor, so that the optimal tightening state can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the wire passing part of the present invention;
FIG. 2 is a detailed cross-sectional view of the arcuate segment rod coupling portion of the present invention;
FIG. 3 is an enlarged partial schematic view A of the present invention;
FIG. 4 is a schematic view of the installation position relationship between the handle and the socket head cap of the present invention;
FIG. 5 is a schematic view of the inner hex bar of the present invention shown withdrawn from the handle;
FIG. 6 is a schematic view of an automatic knotting portion of the present invention;
FIG. 7 is a schematic view of the inner and outer structure of the outer barrel of the automatic knotting part of the present invention;
FIG. 8 is a schematic view of the installation position of the rotating shaft and the outer cylinder according to the present invention;
FIG. 9 is a schematic view of the installation positions of the rotating shaft rod, the injection pipe and the outer cylinder of the present invention;
FIG. 10 is an enlarged partial schematic view B of the present invention;
FIG. 11 is a schematic view of the overall structure of the plastic clamp type wire knot fixing part and the moment measurement of the present invention;
FIG. 12 is a detailed view of the wire clamp type knot securing portion of the present invention;
fig. 13 is a schematic structural view of the patella fixation claw of the present invention.
FIG. 14 is a schematic view of a patella fixation clamp of the present invention;
in the drawings, each reference numeral represents a structure name:
1-grab handle, 101-hexagon socket head rod, 2-connecting rod, 3-arc segment rod, 301-wire hooking port, 302-screw rod, 303-screw cap, 4-transition segment, 5-micromotor, 501-display screen, 6-outer cylinder, 601-rotating shaft rod channel, 602-injection pipe channel, 7-rotating shaft rod, 701-wire hook, 8-injection pipe, 9-torque sensor, 10-microprocessor, 11-D/A converter, 12-clamping head, 13-outer rod, 14-clamping head transmission rod, 1401-handle, 15-spring, 16-plastic wire clamp, 17-patella fixing claw, 1701-wire passing hole and 18-patella fixing clamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 10, a thread passing device for patellar fracture with threading and tightening and knotting functions includes: the device comprises a grab handle 1, a connecting rod 2, an arc section rod 3, a transition section 4, a micro motor 5, an outer barrel 6, a rotating shaft rod 7 and an injection pipe 8;
the left end of the grab handle 1 is fixedly connected with a connecting rod 2, the left end of the connecting rod 2 is detachably connected with an arc-section rod 3, wherein the arc-section rod 3 is divided into a plurality of sections which are movably hinged, and the rightmost arc-section rod 3 is detachably connected with the left end of the connecting rod 2; the left end of the connecting rod 2 is also detachably connected with an automatic knotting part, wherein the automatic knotting part is composed of a transition section 4, a micro motor 5, an outer cylinder 6, a rotating shaft rod 7 and an injection pipe 8, the right end of the transition section 4 is detachably connected with the left end of the connecting rod 2, the left end of the transition section 4 is fixedly connected with the micro motor 5, the micro motor 5 is detachably connected with the left end of the outer cylinder 6, and particularly, a rotor part of the micro motor 5 is positioned inside the outer cylinder 6; a rotating shaft rod 7 and an injection pipe 8 are detachably connected in the outer cylinder 6; the outer barrel 6, the micro motor 5, the rotating shaft rod 7 and the injection pipe 8 are detachably connected, and the arc section rod 3 is detachably connected with the grab handle 1 and the connecting rod 2, so that the cleaning and disinfection can be conveniently carried out after the disassembly;
preferably, the head end of the first section of the arc-shaped section rod 3 positioned at the leftmost side is in a conical structure, and an inwards concave circular thread hooking opening 301 is formed in the head end; the steel wire or the internal fixing wire is arranged in the fixing device and can be brought into the opposite side from the penetrating point through the threading device;
preferably, the arc-segment rods 3 are connected with each other through a hinge structure, the hinge structure is that a convex block structure of a previous arc-segment rod 3 is embedded into a groove structure of a next arc-segment rod 3, and then a screw 302 penetrates through the convex block and the groove, wherein the screw cap 303 is used for locking the opposite side of the screw 302; the nut 303 is a hexagonal nut;
preferably, a slot for placing the inner hexagonal rod 101 is formed in the handle 1; an inner hexagonal rod 101 is detachably arranged in the inner cavity; the inner hexagonal rod 101 can tighten or loosen the nut 303, so that the radian among the arc-shaped rods 3 can be conveniently adjusted;
preferably, a rotating shaft rod channel 601 and an injection pipe channel 602 are formed in the outer cylinder 6, and the tail end of the rotating shaft rod 7 is detachably mounted on the rotor part of the micro motor 5 after passing through the rotating shaft rod channel 601; the rotor part drives the rotating shaft rod 7 to rotate;
preferably, the head end of the rotating shaft rod 7 is connected with two symmetrical wire hooks 701;
preferably, an inlet of the injection pipe is formed on the side wall of the outer cylinder 6 and at a position close to the micro motor 5, the injection pipe 8 enters the outer cylinder 6 from the inlet of the injection pipe through the injection pipe channel 602, and the head end can extend out from the left end of the outer cylinder 6.
Example 2
Based on the embodiment 1, the inner fixing wire knot can also be fixed by using a chuck 12 to match with a wire knot fixing part of a plastic wire clamp 16, and the specific structure is that the wire knot fixing part consists of the chuck 12, an outer rod 13, a chuck transmission rod 14, a spring 15 and the plastic wire clamp 16; a chuck transmission rod channel is formed in the outer cylinder 6, the channel opening is connected with the outer rod 13, the outer rod 13 is hollow, the chuck transmission rod 14 penetrates through the chuck transmission rod channel and the inner part of the outer rod 13, and two chucks 12 are respectively connected to the outer rod 13 and the chuck transmission rod 14; the tail end of the chuck transmission rod 14 is led out of the tail part of the outer cylinder 6 to form a connecting handle 1401; a spring 15 is connected between the tail end of the chuck transmission rod 14 and the bottom end of the chuck transmission rod channel; a molded clip 16 is removably placed between the two jaws 12.
Example 3
Based on embodiment 1, when the rotating shaft 7 drives the wire hook 701 to rotate, the torque sensor 9 of the micro-motor 5 can monitor the torque in real time, and the torque is processed by the built-in program of the microprocessor 10 and then converted into digital signals by the D/a converter 11 to be displayed, so that the tightening force of the internal fixation wire or the internal fixation steel wire can be accurately grasped.
Example 4
The patella fixing clamp can play a role in clamping and reinforcing the fractured patella.
In conclusion, the line passing device for the patella fracture, which is designed by the invention and has the functions of threading, tightening and knotting in the internal fixation of the patella fracture, can adjust the radian of the line passing device part to be as close to the radian of the patella bone surface as possible, and reduce the obstruction in line passing; the automatic knotting part can tighten the steel wire or the internal fixing wire as much as possible to maintain the internal fixing effect.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a have both threading and tighten up line ware of patella fracture of function of knoing which characterized in that includes: the device comprises a grab handle, a connecting rod, an arc-section rod, a transition section, a micro motor, an outer cylinder, a rotating shaft rod, a patella fixing claw and a patella fixing clamp;
the left end of the grab handle is fixedly connected with a connecting rod, the left end of the connecting rod is detachably connected with an arc-section rod, the arc-section rod is divided into a plurality of sections, the sections are movably hinged, and the arc-section rod at the rightmost side is detachably connected with the left end of the connecting rod; the left end of the connecting rod is also detachably connected with an automatic knotting part, wherein the automatic knotting part consists of a transition section, a micro motor, an outer cylinder, a rotating shaft rod and a wire knot fixing part, the right end of the transition section is detachably connected with the left end of the connecting rod, the left end of the transition section is fixedly connected with the micro motor, the micro motor is detachably connected with the left end of the outer cylinder, and particularly, a rotor part of the micro motor is positioned in the outer cylinder; the inner part of the outer cylinder is detachably connected with a rotating shaft rod.
2. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein the head end of the first section of the arc-segment rod at the leftmost side is a conical structure, and an inwardly concave circular thread hooking opening is formed on the conical structure.
3. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein the arc-segment rods are connected with each other through a hinge structure, the hinge structure is that a convex block structure of a previous arc-segment rod is embedded into a groove structure of a next arc-segment rod, and then a screw rod penetrates through the convex block and the groove, wherein the opposite side of a screw on the screw rod is locked by a nut; the nut is a hexagonal nut.
4. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein a slot for placing an internal hexagonal rod is formed in the handle; an inner hexagonal rod is detachably arranged in the inner cavity.
5. The patellar fracture string passing device with the threading, tightening and knotting functions as claimed in claim 1, wherein a rotating shaft rod channel and an injection pipe channel are formed in the outer barrel, and after the rotating shaft rod passes through the rotating shaft rod channel, the tail end of the rotating shaft rod is detachably mounted on a rotor part of the micro motor; the injection pipe is detachably arranged in the injection pipe channel; the injection tube passage and the injection tube constitute a knot securing portion.
6. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1 or 5, wherein two symmetrical thread hooks are connected to the head end of the rotating shaft rod.
7. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein an inlet of the injection tube is formed on the side wall of the outer barrel at a position close to the micro motor, the injection tube enters the outer barrel from the inlet of the injection tube through the passage of the injection tube, and the head end of the injection tube can extend out from the left end of the outer barrel.
8. The patellar fracture thread guide with threading and tightening and knotting functions as claimed in claim 1, wherein the thread knot fixing part is composed of a chuck, an outer rod, a chuck transmission rod, a spring and a plastic wire clamp; the inner part of the outer barrel is provided with a chuck transmission rod channel, a channel opening is connected with an outer rod, the outer rod is hollow, two chuck transmission rods penetrate through the chuck transmission rod channel and the inner part of the outer rod, and the two chucks are respectively connected to the outer rod and the chuck transmission rod; the tail end of the chuck transmission rod is led out of the tail part of the outer cylinder to form a connecting handle; a spring is connected between the tail end of the chuck transmission rod and the bottom end of the chuck transmission rod channel; the plastic wire clamp is detachably arranged between the two clamping heads.
9. The patellar fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein a display screen is mounted on the micro motor part, and a torque sensor, a microprocessor and a D/A converter are integrated; the torque sensor monitors the torsion moment in the knotting process of the thread rope, the torsion moment is converted into the torsion force of the thread rope after being processed by a built-in program of the microprocessor, and the torsion force is converted into a digital signal by the D/A converter for display.
10. The patella fracture thread guide with threading, tightening and knotting functions as claimed in claim 1, wherein a thread hole is formed on the patella fixing claw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210456843.7A CN114699157A (en) | 2022-04-27 | 2022-04-27 | Patella fracture thread passing device with threading, tightening and knotting functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210456843.7A CN114699157A (en) | 2022-04-27 | 2022-04-27 | Patella fracture thread passing device with threading, tightening and knotting functions |
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| CN114699157A true CN114699157A (en) | 2022-07-05 |
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| CN202210456843.7A Pending CN114699157A (en) | 2022-04-27 | 2022-04-27 | Patella fracture thread passing device with threading, tightening and knotting functions |
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| CN107106162A (en) * | 2014-12-24 | 2017-08-29 | 爱德华兹生命科学公司 | Suture Clip Deployment Device |
| CN110090073A (en) * | 2019-06-19 | 2019-08-06 | 李旭东 | Press fastening type medical steel wire connects system |
| CN218792458U (en) * | 2022-04-27 | 2023-04-07 | 中国人民解放军联勤保障部队第九二〇医院 | A threader for patella fracture with both threading and knotting functions |
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