A phalanx fracture internal fixation tool

Abstract

The present invention discloses an internal fixation tool for phalangeal fractures, which belongs to the technical field of medical devices, and includes two groups of cone-shaped parts symmetrically arranged up and down, and also includes a fixing assembly, wherein the two groups of cone-shaped parts are respectively connected to the outer ends of the fixing assembly; a locking guide assembly is installed at the middle end of the fixing assembly; the locking guide assembly includes a locking assembly and a guide assembly. Through the above-mentioned manner, the present invention is easy to operate, less traumatic, can effectively fix fractures, reduce damage to soft tissues around the fractures, accelerate postoperative recovery, and reduce the occurrence of complications, and the internal fixation tool has a more intuitive observation of the structure of the phalanges and the alignment during the operation, which can shorten the operation time; and the internal fixation tool is made of an absorbable material with a certain elasticity, and the patient does not need to undergo surgery again to remove the internal fixation tool after recovery, which reduces the patient's pain, enables the patient to obtain a higher quality of life after surgery, and shortens the patient's postoperative recovery time.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a phalanx fracture internal fixation tool. Background Art

[0002] Phalangeal fractures are common injuries of the upper limbs, accounting for about 24% of all fractures in the body. Phalangeal fractures include various joint and soft tissue injuries, and the purpose of both conservative and surgical treatments is to restore the function of the phalanges to the maximum extent while reducing complications. Currently, the main surgical methods for treating phalangeal fractures include Kirschner wire fixation, open reduction, plate fixation, and compression screw fixation.

[0003] Chinese patent CN219700080U discloses a plate-nail system for internal fixation of fractures, including a bone plate and a plurality of locking screws, wherein the bone plate is provided with a plurality of locking holes extending through the upper and lower surfaces along the length extension direction, the plurality of locking screws are passed through the locking holes to lock and fix the bone plate to both sides of the fractured ends of the bone, both sides of the bone plate in the width direction are respectively provided with limiting grooves extending through the upper and lower surfaces opposite to each locking hole, the screw head of the locking screw is formed with a threading hole extending transversely perpendicular to the axial direction, and the plate-nail system for internal fixation of fractures also includes a threading hole respectively passed through each locking screw and a plurality of binding wires which are tied to the bone behind the corresponding limiting grooves on both sides of the bone plate.

[0004] However, after the fracture is treated according to this patent, the patient needs to undergo another operation to remove the bone plate and several locking screws after recovery, which increases the patient's pain and the patient's postoperative recovery time.

[0005] Based on this, the present invention designs a phalanx fracture internal fixation tool to solve the above problem. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a phalanx fracture internal fixation tool.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A phalangeal fracture internal fixation tool comprises two groups of cone-shaped parts symmetrically arranged up and down, and the cone tips of the cone-shaped parts face inwards;

[0009] It also includes a fixing assembly, and two sets of cone-shaped members are respectively connected to the outer ends of the fixing assembly;

[0010] A locking guide assembly is installed at the middle end of the fixing assembly;

[0011] The locking and guiding assembly comprises a locking assembly and a guiding assembly, and both the locking assembly and the guiding assembly are connected to the fixing assembly.

[0012] Furthermore, the fixing assembly includes a first body, a second body, a connecting hole, a communicating hole and an expansion groove. The outer ends of the first body and the second body are provided with connecting holes, the inner ends of the first body and the second body are provided with communicating holes, the communicating holes are connected to the connecting holes, the outer ends of the first body and the second body are provided with multiple expansion grooves at equal intervals along the circumference, and the lower end of the first body and the upper end of the second body are in contact and connected.

[0013] Furthermore, the first body and the second body are both connected to the locking assembly and the guide assembly.

[0014] Furthermore, the first body and the second body have a medullary cavity shape.

[0015] Furthermore, the lower end of the upper conical member is embedded in the connecting hole at the upper end of the first body and plugged into the connecting hole, and the upper end of the lower conical member is embedded in the connecting hole at the lower end of the fixing assembly and plugged into the connecting hole.

[0016] Furthermore, the locking assembly includes a locking mortise, a connecting groove, a first mortise, a locking tenon and a first convex tenon. Two locking mortises are provided at equal intervals along the circumference at the lower end of the first main body. Two first mortises are provided at equal intervals along the circumference at the lower end of the first main body. The front first mortise is located at the right lower end of the front locking mortise, and the rear first mortise is located at the left lower end of the rear locking mortise. The upper end of the second main body is fixedly connected with two locking tenons plugged into the locking mortise at equal intervals along the circumference. The upper end of the second main body is fixedly connected with two first convex tenons plugged into the first mortise at equal intervals along the circumference. A connecting groove is provided on the lower inner wall of the right end of the front locking mortise and the lower inner wall of the left end of the rear locking mortise.

[0017] Furthermore, the locking tenon is composed of a first arc tenon and a second arc tenon, the second arc tenon is fixedly connected to the upper right end of the first arc tenon, the upper end of the second arc tenon is higher than the upper end of the first arc tenon, and the right end of the second arc tenon is on the same vertical plane as the right end of the first tenon.

[0018] Furthermore, the guide assembly includes a second mortise and a second tenon, the lower end of the first main body is provided with two second mortises at equal intervals along the circumference, the second mortise and the locking mortise are staggered, and the upper end of the second main body is fixedly connected with two second tenons plugged into the second mortise at equal intervals along the circumference.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] During the treatment of the present invention, the medullary cavity of the phalanx is first cleaned, and then a cone is inserted from the fracture end to the proximal and distal ends respectively. After completion, the fixing components are respectively inserted from the fracture end into the proximal and distal ends of the phalanx, so that the fixing components are plugged into the cone components to achieve the expansion of the outer end of the fixing component and fix it to the inner wall of the medullary cavity of the phalanx. Then, the proximal and distal ends of the phalanx are aligned, and the locking component and the guide component are rebounded, fixed and locked to complete the fixation of the phalanx at the fracture site. After the connection, the phalanx can also be squeezed from both ends to the middle to complete the pressurization of the fracture ends. After the pressurization is completed, bone blocks can be stuffed into the locking component to achieve locking. The fixation component is expanded to achieve fixation with the inner wall of the phalanx medullary cavity. As long as the phalanx is squeezed, it is difficult to separate at both ends, and the more it is squeezed, the firmer the fixation is, achieving a secondary pressurization effect on the fracture ends. The internal fixation tool is easy to operate and has low trauma. It can effectively fix the fracture, reduce damage to the soft tissue around the fracture, speed up postoperative recovery, and reduce the occurrence of complications. The internal fixation tool has a more intuitive observation of the structure of the phalanx and the alignment during the operation, which can shorten the operation time.

[0021] The conical part, the first body, the second body, the locking tenon, the first tenon and the second tenon of the present invention are all made of absorbable materials with a certain elasticity. After the patient recovers, there is no need to undergo another surgery to remove the internal fixation tool, which reduces the patient's pain, allows the patient to have a higher quality of life after the operation, and shortens the patient's recovery time after the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A three-dimensional internal fixation tool for phalanx fractures of the present invention Figure 1 ;

[0024] Figure 2 It is a front view of a phalanx fracture internal fixation tool of the present invention;

[0025] Figure 3 The first body of the phalanx fracture internal fixation tool of the present invention is connected to the locking guide assembly in a three-dimensional manner. Figure 1 ;

[0026] Figure 4 The first body of the phalanx fracture internal fixation tool of the present invention is connected to the locking guide assembly in a three-dimensional manner. Figure 2 ;

[0027] Figure 5 The second body of the phalanx fracture internal fixation tool of the present invention is connected to the locking guide assembly in a three-dimensional manner. Figure 1 ;

[0028] Figure 6 The second body of the phalanx fracture internal fixation tool of the present invention is connected to the locking guide assembly in a three-dimensional manner. Figure 2 ;

[0029] Figure 7 The present invention is a stereoscopic view of a conical member of a phalanx fracture internal fixation tool.

[0030] The numbers in the figure represent:

[0031] 1. Fixing assembly; 11. First body; 12. Second body; 13. Connecting hole; 14. Connecting hole; 15. Expansion groove; 2. Locking guide assembly; 21. Locking assembly; 211. Locking mortise; 212. Connecting groove; 213. First mortise; 214. Locking tenon; 215. First tenon; 22. Guide assembly; 221. Second mortise; 222. Second tenon; 3. Conical member. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view. Embodiment 1

[0034] In some embodiments, please refer to the attached instructions. Figure 1-7 , a phalanx fracture internal fixation tool, comprising two groups of cone-shaped members 3 symmetrically arranged in an upper and lower direction, and the cone tips of the cone-shaped members 3 face inwards;

[0035] It also includes a fixing assembly 1, and two sets of cone-shaped members 3 are respectively connected to the outer ends of the fixing assembly 1;

[0036] A locking guide assembly 2 is installed at the middle end of the fixing assembly 1;

[0037] The locking and guiding assembly 2 includes a locking assembly 21 and a guiding assembly 22 , and both the locking assembly 21 and the guiding assembly 22 are connected to the fixing assembly 1 .

[0038] During treatment, the medullary cavity of the phalanx is first cleaned, and then a cone 3 is inserted from the fracture end to the proximal and distal ends, respectively. The proximal end refers to the end of the fracture position close to the wrist, and the distal end refers to the end of the fracture position close to the finger. After completion, the fixing component 1 is inserted from the fracture end into the proximal and distal ends of the phalanx, respectively, so that the fixing component 1 is plugged into the cone 3, so that the outer end of the fixing component 1 is expanded and fixed to the inner wall of the medullary cavity of the phalanx, and then the proximal and distal ends of the phalanx are aligned, and the locking component 21 and the guide component 22 are rebounded, fixed and locked to complete the fixation of the phalanx at the fracture. After connection, the phalanx can also be fixed from both ends. The bone is squeezed toward the middle to complete the pressurization effect on the fracture ends. After the pressurization is completed, bone blocks can be stuffed into the locking component 21 to achieve locking. The fixing component 1 is expanded to achieve fixation with the inner wall of the phalanx medullary cavity. As long as the phalanx is squeezed, it is difficult to separate to both ends, and the more it is squeezed, the firmer the fixation is, thereby achieving a secondary pressurization effect on the fracture ends. The internal fixation tool is easy to operate and has low trauma. It can effectively fix the fracture, reduce damage to the soft tissue around the fracture, speed up postoperative recovery, and reduce the occurrence of complications. In addition, the internal fixation tool has a more intuitive observation of the structure of the phalanx and the alignment during the operation, which can shorten the operation time. Embodiment 2

[0039] In some embodiments, Figure 1-7 As shown, as a preferred embodiment of the present invention,

[0040] The fixing assembly 1 includes a first body 11, a second body 12, a connecting hole 13, a communicating hole 14 and an expansion groove 15. The outer ends of the first body 11 and the second body 12 are both provided with a connecting hole 13, the inner ends of the first body 11 and the second body 12 are both provided with a communicating hole 14, and the communicating hole 14 is communicated with the connecting hole 13. The outer ends of the first body 11 and the second body 12 are both provided with a plurality of expansion grooves 15 at equal intervals along the circumference, and the lower end of the first body 11 is in contact with the upper end of the second body 12.

[0041] The first body 11 and the second body 12 are both connected to the locking assembly 21 and the guiding assembly 22 .

[0042] The first body 11 and the second body 12 are in the shape of a bone marrow cavity.

[0043] The lower end of the upper conical member 3 is embedded in the connecting hole 13 at the upper end of the first body 11 and plugged into the connecting hole 13 , and the upper end of the lower conical member 3 is embedded in the connecting hole 13 at the lower end of the fixing assembly 1 and plugged into the connecting hole 13 .

[0044] The locking assembly 21 includes a locking mortise 211, a connecting groove 212, a first mortise 213, a locking tenon 214 and a first convex tenon 215. Two locking mortises 211 are provided at equal intervals along the circumference at the lower end of the first main body 11. Two first mortises 213 are provided at equal intervals along the circumference at the lower end of the first main body 11. The front first mortise 213 is located at the right lower end of the front locking mortise 211, and the rear first mortise 213 is located at the left lower end of the rear locking mortise 211. Two locking tenons 214 plugged into the locking mortise 211 are fixedly connected to the upper end of the second main body 12 at equal intervals along the circumference. Two first convex tenons 215 plugged into the first mortise 213 are fixedly connected to the upper end of the second main body 12 at equal intervals along the circumference. A connecting groove 212 is provided on the lower inner wall of the right end of the front locking mortise 211 and the lower inner wall of the left end of the rear locking mortise 211.

[0045] Taking the locking tenon 214 on the front side as an example, the locking tenon 214 is composed of a first arc tenon and a second arc tenon. The second arc tenon is fixedly connected to the upper right end of the first arc tenon. The upper end of the second arc tenon is higher than the upper end of the first arc tenon. The right end of the second arc tenon and the right end of the first tenon 215 are on the same vertical plane.

[0046] The guide assembly 22 includes a second mortise 221 and a second tenon 222. The lower end of the first body 11 is provided with two second mortises 221 at equal intervals along the circumference. The second mortise 221 is staggered with the locking mortise 211. The upper end of the second body 12 is fixedly connected with two second tenons 222 that are plugged into the second mortise 221 at equal intervals along the circumference.

[0047] The cone-shaped member 3, the first body 11, the second body 12, the locking tenon 214, the first tenon 215 and the second tenon 222 are all made of absorbable materials with a certain elasticity.

[0048] During treatment, the medullary cavity of the phalanx is first cleaned, and a cone 3 is inserted from the fracture end to the proximal and distal ends respectively. Then, the first body 11 and the second body 12 are respectively inserted from the fracture end into the proximal and distal ends of the phalanx, so that the cone tip of the cone 3 is inserted into the connecting hole 13 on the first body 11 and the second body 12. As the depth of the cone 3 inserted into the first body 11 and the second body 12 increases, the outer ends of the first body 11 and the second body 12 gradually expand and are fixed to the inner wall of the medullary cavity of the phalanx. Then, the proximal and distal ends of the phalanx are aligned, so that the locking tenon 214 is stuck into the locking mortise 211. At the same time, the second tenon 222 is opened outwardly under the action of the first body 11 until the second tenon 222 moves to the outer end of the second mortise 221, and the second tenon 222 moves inwardly under the action of elasticity to reset and dock with the second mortise 221. At this time, the locking tenon 214 and the first tenon 215 on the front and rear sides are also moved to the locking mortise 211 and the first mortise 213 at the front and rear ends respectively, and the locking limit in the front and rear directions is realized by the second mortise 221 and the second tenon 222. The locking limit in the left and right directions is realized by the locking tenon 211, the first mortise 213, the locking tenon 214 and the first tenon 215, so as to fix the phalanges at the fractured part. After the connection, the phalanges can also be squeezed from both ends to the middle to complete the pressurization of the fracture ends. After the pressurization is completed, the bone blocks can be filled into the connecting groove 212 to achieve locking. The first body 11 and the second body 12 are enlarged to achieve fixation with the inner wall of the bone marrow cavity of the phalanges. As long as the phalanges are squeezed, it is difficult for the phalanges to separate from the two ends, and the more they are squeezed, the firmer the fixation is, so as to achieve the secondary pressurization of the fracture ends, thereby completing the pressurization fixation of the phalanges fracture. This fixation method is conducive to early rehabilitation exercises for patients, and restores the activity function of the patient's affected finger to the maximum extent. The cone-shaped member 3, the first body 11, the second body 12, the locking tenon 214, the first tenon 215 and the second tenon 222 are all made of absorbable materials with a certain elasticity. After the patient recovers, there is no need to undergo surgery again to remove the internal fixation tool. The patient's secondary surgery is reduced, the patient's treatment costs are reduced, the patient can have a higher quality of life after surgery, and the patient's recovery time after surgery is shortened. Embodiment 3

[0049] In some embodiments, Figure 1-7 As shown, as a preferred embodiment of the present invention, the second body 12, the locking tenon 214, the first tenon 215 and the second tenon 222 are an integrally formed structure.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A phalanx fracture internal fixation tool, comprising two groups of cone-shaped members (3) symmetrically arranged in an upper and lower direction, with the cone tips of the cone-shaped members (3) facing inwards, characterized in that: It also includes a fixing assembly (1), and two groups of cone-shaped members (3) are respectively connected to the outer ends of the fixing assembly (1); A locking guide component (2) is provided at the middle end of the fixing component (1); The locking and guiding assembly (2) comprises a locking assembly (21) and a guiding assembly (22), and both the locking assembly (21) and the guiding assembly (22) are connected to the fixing assembly (1); The fixing assembly (1) comprises a first body (11), a second body (12), a connecting hole (13), a communicating hole (14) and an expansion groove (15); the outer ends of the first body (11) and the second body (12) are provided with a connecting hole (13); the inner ends of the first body (11) and the second body (12) are provided with a communicating hole (14); the communicating hole (14) is communicated with the connecting hole (13); the outer ends of the first body (11) and the second body (12) are provided with a plurality of expansion grooves (15) at equal intervals along a circumference; the lower end of the first body (11) and the upper end of the second body (12) are in contact and connected; The first body (11) and the second body (12) are both connected to the locking assembly (21) and the guide assembly (22); The lower end of the upper conical member (3) is embedded in the connection hole (13) at the upper end of the first body (11) and plugged into the connection hole (13), and the upper end of the lower conical member (3) is embedded in the connection hole (13) at the lower end of the fixing assembly (1) and plugged into the connection hole (13); The locking assembly (21) and the guide assembly (22) are rebounded, fixed, and locked to complete the fixation of the phalanx at the fractured part.

2. The phalanx fracture internal fixation tool according to claim 1, characterized in that: The first main body (11) and the second main body (12) are in the shape of a bone marrow cavity.

3. The phalanx fracture internal fixation tool according to claim 2, characterized in that: The locking assembly (21) comprises a locking mortise (211), a communicating groove (212), a first mortise (213), a locking tenon (214) and a first convex tenon (215), wherein two locking mortises (211) are arranged at equal intervals along the circumference of the lower end of the first body (11), and two first mortises (213) are arranged at equal intervals along the circumference of the lower end of the first body (11), the front first mortise (213) is located at the lower right end of the front locking mortise (211), and the rear first mortise (213) is located at the lower right end of the front locking mortise (211). 3) At the lower left end of the locking mortise (211) at the rear side, two locking tenons (214) plugged into the locking mortise (211) are fixedly connected to the upper end of the second body (12) at equal intervals along the circumference, and two first convex tenons (215) plugged into the first mortise (213) are fixedly connected to the upper end of the second body (12) at equal intervals along the circumference, and a communicating groove (212) is provided on the lower inner wall of the right end of the front locking mortise (211) and the lower inner wall of the left end of the rear locking mortise (211).

4. The phalanx fracture internal fixation tool according to claim 3, characterized in that: The locking tenon (214) is composed of a first arc-shaped protrusion and a second arc-shaped protrusion, the second arc-shaped protrusion is fixedly connected to the upper side of the right end of the first arc-shaped protrusion, the upper end of the second arc-shaped protrusion is higher than the upper end of the first arc-shaped protrusion, and the right end of the second arc-shaped protrusion and the right end of the first tenon (215) are located on the same vertical plane.

5. The phalanx fracture internal fixation tool according to claim 4, characterized in that: The guide assembly (22) comprises a second mortise (221) and a second tenon (222); the lower end of the first body (11) is provided with two second mortises (221) at equal intervals along the circumference; the second mortise (221) is staggered with the locking tenon (211); the upper end of the second body (12) is fixedly connected with two second tenons (222) plugged into the second mortise (221) at equal intervals along the circumference.

Images