Auxiliary fixing device for fracture reduction

Abstract

The invention relates to the field of medical instruments, and discloses a fracture reduction auxiliary fixing device which comprises a frame, the frame comprises a first frame body, a second frame body, a third frame body and a fourth frame body which are connected end to end to form a frame structure, and the frame structure is used for being connected to the outer portion of an affected part needing reduction in a sleeving mode; the adjusting assembly is installed at the end of the frame and can adjust the inner size of the whole frame according to needs; the kirschner wire is mounted on the upper surface of the frame and penetrates through an affected part during an operation to position a bone; and the connecting assembly connects the two groups of frames and can adjust the distance between the two groups of frames. All parts of the frame are disassembled, then the frame is locked through the adjusting assembly, therefore, the inner size of the frame can be adjusted according to fracture reduction requirements of different positions, the four positions of the frame body are limited through cooperation of the steel balls and the clamping grooves, meanwhile, the kirschner wires are extruded through deformation of the conical sleeves, and the kirschner wires can be fixed conveniently. And the kirschner wire is prevented from deviating and shaking.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a fracture reduction auxiliary fixation device. Background Art

[0002] In modern orthopedic surgery, Kirschner wires are a common fracture reduction and fixation tool, widely used in the treatment of various types of fractures. Kirschner wires have the advantages of simple operation, less trauma, and good reduction effect, and are particularly suitable for fractures in the limbs, hands and feet. However, although Kirschner wires have significant advantages in clinical applications, there are still some problems that cannot be ignored during postoperative or intraoperative fixation.

[0003] In current orthopedic surgery, the fixation of Kirschner wires mainly relies on the surgeon's skills and manual adjustment, but this method often makes it difficult to ensure that the Kirschner wires always remain in the optimal position when faced with complex fracture types. Especially during the fracture reduction process, the Kirschner wires are easily affected by external forces, such as the movement of the patient, the operation of surgical instruments, etc., causing them to shake or shift in the bone tissue. This shaking is not only likely to lead to unsatisfactory reduction effects and affect fracture healing, but also easily cause further bone damage or require a second surgery for adjustment. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a fracture reduction auxiliary fixation device to solve the problem that the position of the Kirschner wire after orthopedic surgery is easily shifted due to external influences.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fracture reduction auxiliary fixation device, comprising a frame, the frame comprising a frame body 1, a frame body 2, a frame body 3 and a frame body 4, which are connected end to end to form a frame structure, and are used to be sleeved on the outside of the affected part that needs to be reduced;

[0006] The adjustment component is installed at the end of the frame and can adjust the inner size of the entire frame as needed;

[0007] Kirschner wires, mounted on the upper surface of the frame, are passed through the affected area during surgery for bone positioning;

[0008] The connecting component connects the two sets of frames and can adjust the distance between the two sets of frames.

[0009] Preferably, the adjustment assembly includes a mounting seat, which is installed at the open end of frame body one, and a rotating sleeve is rotatably connected to the middle of the mounting seat. Frame body four passes through the middle of the rotating sleeve, and a locking mechanism for locking the position of frame body four is also installed on the outside of the rotating sleeve.

[0010] Preferably, the locking mechanism comprises a locking bolt, the locking bolt is threadedly connected to the top of the rotating sleeve, and the bottom of the locking bolt abuts against the four outer surfaces of the frame body.

[0011] Preferably, the locking mechanism includes an outer shell, which is fixedly mounted on the outside of the rotating sleeve, a top shell is fixedly connected to the top of the outer shell, a push rod is slidably connected to the middle of the outer shell, the bottom end of the push rod is fixedly connected to a connecting seat, the other end of the connecting seat is fixedly connected to a slide groove, the top of the slide groove is fixedly connected to a snap ring, a connecting seat is provided inside the rotating sleeve, and the slide groove and the snap ring are slidably connected to the middle of the connecting seat.

[0012] Preferably, a push block is fixedly connected to the top of the push rod, a spring is fixedly connected to the top of the push block, the spring is fixedly connected to the top of the top shell, a slot is opened on the outside of the push rod, a movable shell is installed inside the top shell, a plurality of steel balls are placed inside the movable shell, and the steel balls are located in the middle of the slot.

[0013] Preferably, the connection points of the frame 1, frame 2, frame 3 and frame 4 are connected by hinges, and the open end of the frame 1 has a specific curvature.

[0014] Preferably, a plurality of groups of clamps are provided on the four peripheries of the frame, and the clamps are clamped with the clamp rings.

[0015] Preferably, a plurality of rotating seats are fixedly connected to the outside of the frame, a hoop is rotatably connected to the top of the rotating seat, and the Kirschner wire passes through the middle of the hoop.

[0016] Preferably, a plurality of conical sleeves are fixedly connected inside the ferrule, and a plurality of notches are formed in the middle of the conical sleeves.

[0017] Preferably, the connecting assembly includes a threaded rod and a rotating column, the threaded rod is fixedly connected to the outer sides of the two frames, a rotating column is threadedly connected between the two threaded rods, and a plurality of grabbing grooves are provided on the outer sides of the rotating column.

[0018] Working principle: During the operation, the frame formed by frame one, frame two, frame three and frame four is opened along the connection between the mounting seat and the rotating sleeve. At this time, frame four can be pulled out from the middle of the rotating sleeve. At this time, the whole frame can be opened, and then the frame is inserted from the outside of the patient's affected part, and frame four is passed through the middle of the rotating sleeve again. After the frame is fastened to the periphery of the affected part, the push rod is pushed upward, and the push rod will drive the connecting seat and the clamping ring to move upward, and after passing through the slide groove, it will be clamped with the clamping ring opened on the outside of frame four. When the push rod is pushed upward, the clamping groove also reaches the inside of the movable shell. At this time, the steel ball will also enter the inside of the clamping groove and release it. After the push rod is pushed out, the spring wants to push the push rod out, but it cannot move due to the influence of the steel ball and the groove, thereby locking the position of the clamping ring, thereby limiting the inner size of the frame, and then installing the other frame in the same way. When the distance between the two frames needs to be adjusted, the position of the two frames can be adjusted by rotating the rotating column with the cooperation of the internal thread groove and the threaded rod, thereby adapting to the needs of different installation positions. After the position of the frame is confirmed, adjust the angle of the hoop, and then pass the Kirschner wire through the middle of the hoop and fix it to the bone of the affected area, thereby completing the entire fracture reduction operation.

[0019] The present invention provides a fracture reduction auxiliary fixation device, which has the following beneficial effects:

[0020] 1. The present invention disassembles the various parts of the frame and then locks the frame through adjusting components, thereby adjusting the inner size of the frame according to the fracture reduction needs at different positions, and uses steel balls and slots to limit the four positions of the frame, thereby facilitating the needs of different usage environments.

[0021] 2. In the present invention, the two frames are connected by a rotating column and a threaded rod. If the positions of the two frames need to be adjusted during use, it is only necessary to rotate the rotating column. At this time, the two threaded rods will move in opposite directions under the action of their own threads and the internal threads of the rotating column, thereby changing the positions of the two frames.

[0022] 3. In the present invention, a conical sleeve is installed inside the hoop, and a notch is opened on the outside of the conical sleeve. When the Kirschner wire is inserted from the middle of the hoop, the conical sleeve will be squeezed. At this time, the open end of the conical sleeve will be deformed to a certain extent due to the notch, thereby squeezing and tightening the Kirschner wire, thereby ensuring the subsequent stability of the Kirschner wire and reducing the displacement and shaking of the Kirschner wire caused by external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the framework part in the present invention;

[0025] Figure 3 Schematic diagram of the installation position of the Kirschner wire in the present invention;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the housing in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the tapered sleeve in the present invention;

[0028] Figure 6 for Figure 3 Enlarged view of point A in the middle.

[0029] Among them, 1. frame one; 2. frame two; 3. frame three; 4. frame four; 5. ferrule; 6. Kirschner wire; 7. mounting seat; 8. rotating sleeve; 9. outer shell; 10. top shell; 11. slide groove; 12. retaining ring; 13. connecting seat; 14. push rod; 15. push block; 16. spring; 17. movable shell; 18. steel ball; 19. retaining groove; 20. locking bolt; 21. clamp; 22. rotating seat; 23. tapered sleeve; 24. notch; 25. rotating column; 26. threaded rod; 27. grabbing groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0031] Example:

[0032] Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides a fracture reduction auxiliary fixation device, including a frame, the frame including frame body 1, frame body 2, frame body 3, and frame body 4, which are connected end to end to form a frame structure, which is used to be sleeved on the outside of the affected part that needs to be reduced; the frame body 1, frame body 2, frame body 3, and frame body 4 are connected at the joints by hinges, and there is a certain amount of residual space at the joints, which is used to provide a reserved amount when reducing the space inside the frame, and the open end of the frame body 1 presents a specific curvature. After the end of the frame body 1 is changed to a specific curvature, when the size of the frame is reduced, the impact of the abutment between the frame body 1 and the frame body 4 can be avoided. The frame can also be composed of the frame body 1, the frame body 2, and the frame body 4, and it only needs to form a complete circle.

[0033] The Kirschner wire 6 is installed on the upper surface of the frame and passes through the affected part during surgery to locate the bone; the frame is fixedly connected to a plurality of rotating seats 22 on the outside, and the rotating seats 22 are distributed on the outside of the frame 1, frame 2, frame 3, and frame 4, and because the frame 4 is mainly used to adjust the frame shape and the inner ring size, the number of rotating seats 22 on the outside of the frame 4 is relatively small. The top of the rotating seat 22 is rotatably connected to a hoop 5, and the Kirschner wire 6 passes through the middle of the hoop 5. The direction of the hoop 5 can be freely rotated to adapt to the installation angle requirements of different Kirschner wires 6. A plurality of conical sleeves 23 are fixedly connected to the inside of the hoop 5, and a plurality of notches 24 are opened in the middle of the conical sleeve 23. After the Kirschner wire 6 is inserted from the middle of the hoop 5, the conical sleeve 23 will be squeezed and deformed at the position of the notch 24. At this time, the Kirschner wire 6 will be squeezed by the structure of the conical sleeve 23, thereby improving the subsequent stability of the Kirschner wire 6 and reducing the displacement and shaking of the Kirschner wire 6 caused by external forces.

[0034] Please see attached Figure 2 , Attachment Figure 4 and attached Figure 6 , the adjustment component is installed at the end of the frame, and the inner circumference size of the entire frame can be adjusted as needed; the adjustment component includes a mounting seat 7, the mounting seat 7 is installed at the open end of the frame body 1, and the middle part of the mounting seat 7 is rotatably connected with a rotating sleeve 8, the frame body 44 passes through the middle part of the rotating sleeve 8, and the rotating sleeve 8 can rotate freely in the middle part of the mounting seat 7. When the inner size of the frame needs to be adjusted, after the frame body 44 passes through the rotating sleeve 8, the rotating sleeve 8 can continuously adapt to the angle of the frame body 44, so as to better adjust the size. A locking mechanism for locking the position of the frame body 44 is also installed on the outside of the rotating sleeve 8. After the inner circumference size of the frame is adjusted, the position of the frame body 44 is limited by the locking mechanism. The locking mechanism includes a locking bolt 20, the locking bolt 20 is threadedly connected to the top of the rotating sleeve 8, and the bottom of the locking bolt 20 is abutted against the outer surface of the frame body 44. After the frame body 44 passes through the middle part of the rotating sleeve 8, the frame body 44 can be squeezed by tightening the locking bolt 20, thereby completing the limitation of the position of the frame body 44.

[0035] Please see attached Figure 4The locking mechanism also includes a shell 9, which is fixedly mounted on the outside of the rotating sleeve 8. The top of the shell 9 is fixedly connected to a top shell 10. A push rod 14 is slidably connected to the middle of the shell 9. The bottom end of the push rod 14 is fixedly connected to a connecting seat 13. The other end of the connecting seat 13 is fixedly connected to a slide groove 11. The top of the slide groove 11 is fixedly connected to a clamping ring 12. A connecting seat 13 is provided inside the rotating sleeve 8. The slide groove 11 and the clamping ring 12 are slidably connected to the middle of the connecting seat 13. Multiple groups of clamps 21 are provided on the periphery of the frame body 44. The clamps 21 are clamped with the clamping ring 12. When the size inside the frame needs to be adjusted, the frame body 44 is passed through the middle of the rotating sleeve 8, and then the clamps 21 are continuously inserted into the inside of the frame body 44. After reaching the required position, the push rod 14 is pressed upward, which can make the connecting seat 13 and the clamping ring 12 move upward, penetrate from the slide groove 11 to complete the clamping connection with the clamp 21, thereby completing the restriction of the position of the frame body 44.

[0036] Please see attached Figure 4 , a push block 15 is fixedly connected to the top of the push rod 14, a spring 16 is fixedly connected to the top of the top shell 10, a slot 19 is provided on the outside of the push rod 14, a movable shell 17 is installed inside the top shell 10, a plurality of steel balls 18 are placed inside the movable shell 17, and the steel balls 18 are located in the middle of the slot 19. When the push rod 14 is lifted upward, the push block 15 is lifted together, and the slot 19 on the outer wall of the push rod 14 reaches the position of the movable shell 17, and the steel balls 18 located inside the movable shell 17 move to this place to block the slot 19, thereby preventing the push rod 14 from retreating, thereby completing the restriction of the position of the snap ring 12 to ensure stability, and secondly, when it is necessary to disassemble, only a strong magnet is needed outside the top shell 10 to lift the movable shell 17 upward, and the steel balls 18 can be disengaged from the slot 19 position, thereby taking out the push rod 14.

[0037] Please see attached Figure 1 , connecting assembly, connecting two sets of frames, and adjusting the distance between the two sets of frames. The connecting assembly includes a threaded rod 26 and a rotating column 25. The threaded rod 26 is fixedly connected to the outside of the two frames, and the rotating column 25 is threadedly connected between the two threaded rods 26. When the distance between the two frames needs to be adjusted, the position adjustment of the two frames can be achieved by rotating the rotating column 25 under the cooperation of the internal thread groove and the threaded rod 26, thereby adapting to the needs of different installation positions. A plurality of grabbing grooves 27 are provided on the outside of the rotating column 25. After the plurality of grabbing grooves 27 are provided, the rotating column 25 can be conveniently rotated.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fracture reduction auxiliary fixation device, characterized in that: include, The frame includes a frame body 1 (1), a frame body 2 (2), a frame body 3 (3) and a frame body 4 (4), which are connected end to end to form a frame structure, and are used to be sleeved on the outside of the affected part that needs to be repositioned; The adjustment component is installed at the end of the frame and can adjust the inner size of the entire frame as needed; Kirschner wires (6), mounted on the upper surface of the frame, passed through the affected area during surgery to locate the bone; The connecting component connects the two sets of frames and can adjust the distance between the two sets of frames.

2. A fracture reduction auxiliary fixation device according to claim 1, characterized in that: The adjustment assembly comprises a mounting seat (7), wherein the mounting seat (7) is mounted on the open end of the frame body one (1), a rotating sleeve (8) is rotatably connected to the middle of the mounting seat (7), the frame body four (4) passes through the middle of the rotating sleeve (8), and a locking mechanism for locking the position of the frame body four (4) is also installed on the outer side of the rotating sleeve (8).

3. A fracture reduction auxiliary fixation device according to claim 2, characterized in that: The locking mechanism comprises a locking bolt (20), the locking bolt (20) is threadedly connected to the top of the rotating sleeve (8), and the bottom of the locking bolt (20) is in contact with the outer surface of the frame body (4).

4. The fracture reduction auxiliary fixation device according to claim 2, characterized in that: The locking mechanism comprises a shell (9), wherein the shell (9) is fixedly mounted on the outside of the rotating sleeve (8), the top of the shell (9) is fixedly connected to a top shell (10), the middle of the shell (9) is slidably connected to a push rod (14), the bottom end of the push rod (14) is fixedly connected to a connecting seat (13), the other end of the connecting seat (13) is fixedly connected to a slide groove (11), the top of the slide groove (11) is fixedly connected to a snap ring (12), the inside of the rotating sleeve (8) is provided with a connecting seat (13), and the slide groove (11) and the snap ring (12) are slidably connected to the middle of the connecting seat (13).

5. The fracture reduction auxiliary fixation device according to claim 4, characterized in that: The top of the push rod (14) is fixedly connected to a push block (15), the top of the push block (15) is fixedly connected to a spring (16), the spring (16) is fixedly connected to the top of the top shell (10), a slot (19) is provided on the outside of the push rod (14), a movable shell (17) is installed inside the top shell (10), a plurality of steel balls (18) are placed inside the movable shell (17), and the steel balls (18) are located in the middle of the slot (19).

6. The fracture reduction auxiliary fixation device according to claim 1, characterized in that: The connection points of the frame 1 (1), the frame 2 (2), the frame 3 (3) and the frame 4 (4) are connected by hinges, and the open end of the frame 1 (1) has a specific curvature.

7. The fracture reduction auxiliary fixation device according to claim 4, characterized in that: The outer periphery of the frame body (4) is provided with a plurality of groups of clamps (21), and the clamps (21) are clamped with the clamp ring (12).

8. The fracture reduction auxiliary fixation device according to claim 1, characterized in that: A plurality of rotating seats (22) are fixedly connected to the outside of the frame, a hoop (5) is rotatably connected to the top of the rotating seat (22), and the Kirschner wire (6) passes through the middle of the hoop (5).

9. The fracture reduction auxiliary fixation device according to claim 8, characterized in that: A plurality of conical sleeves (23) are fixedly connected inside the ferrule (5), and a plurality of notches (24) are formed in the middle of the conical sleeves (23).

10. The fracture reduction auxiliary fixation device according to claim 1, characterized in that: The connection assembly comprises a threaded rod (26) and a rotating column (25), wherein the threaded rod (26) is fixedly connected to the outer sides of the two frames, a rotating column (25) is threadedly connected between two of the threaded rods (26), and a plurality of grabbing grooves (27) are provided on the outer sides of the rotating column (25).

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