CN219207244U - Compressible ulna coronal process fracture fixing device - Google Patents
Compressible ulna coronal process fracture fixing device Download PDFInfo
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- CN219207244U CN219207244U CN202320004198.5U CN202320004198U CN219207244U CN 219207244 U CN219207244 U CN 219207244U CN 202320004198 U CN202320004198 U CN 202320004198U CN 219207244 U CN219207244 U CN 219207244U
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- kirschner wire
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Abstract
The utility model discloses a pressurizable ulna coronal process fracture fixing device, which comprises a broken half-thread Kirschner wire, wherein the broken half-thread Kirschner wire is divided into a near-end polish rod part of the Kirschner wire, a broken joint part, a ball part, a far-end polish rod part of the Kirschner wire, a far-end thread part of the Kirschner wire and a tip part of the Kirschner wire; the coronal process claw is divided into a body part and a fixing claw, the center of the body part is provided with a hollowed-out ring, and the fixing claw can firmly fix the coronal process fracture block; the nut is matched with the screw thread part at the far end of the Kirschner wire and can play a role in pressurization; the hollow screwdriver is divided into a screwdriver body, a handle, a sleeve and a through hole; 4 fixed claws of the coronal process claw are matched with a Kirschner wire to fix the ossicle block at 5 points, so that the ossicle block can be firmly fixed, and the coronal process fracture part can be connected under the condition of pressurization by matching with a nut, so that the fixation is firm, the slip is avoided, the healing is quick, the wound is small, and the patient can perform functional exercise at early stage; in addition, the Kirschner wire is low in price, and the economic burden of a patient is obviously reduced.
Description
Technical Field
The utility model relates to the technical field of fracture fixation, in particular to a pressurizable ulna coronal process fracture fixation device.
Background
The integrity of the ulnar coronal bony structure is critical to the maintenance of elbow joint stability, and most practitioners currently believe that when an ulnar coronal fracture is accompanied by an elbow joint instability, the fracture mass, regardless of size, should be surgically fixed. Particularly for smaller fracture blocks, how to effectively fix and facilitate early postoperative rehabilitation is a troublesome problem at present. For small fracture blocks, the Kirschner wire is clinically fixed, and the common Kirschner wire is easy to loose and deviate from, so that internal fixation fails. Although the current improved Kirschner wire can be provided with broken joints, threads and limiting snap rings, the operation is convenient, a certain pressurizing effect is achieved, the healing of fracture blocks is facilitated, the ulna coronal process is an inclined plane, when the pressure is applied, the fracture ends are displaced due to the effect of the limiting snap rings, the fracture blocks are smaller, when only one Kirschner wire is fixed, the fracture ends are easily displaced in the later recovery process, more than 2 Kirschner wires are needed to be fixed, and when a plurality of Kirschner wires are fixed in operation, the fracture blocks are easily burst.
For example, the publication date is 18 days of 2010 and 08 months, and the authorized bulletin number is CN201551385U, including the spacing Kirschner wire of snap ring, by Kirschner wire body, snap ring and afterbody composition, its characterized in that: the groove type defect is arranged at the 4cm position of the Kirschner wire tail, the clamping ring with the diameter being 2 times of that of the Kirschner wire is preloaded, the Kirschner wire is cut at the position about 2-3 mm outside the clamping ring after the clamping ring is used for limiting the Kirschner wire to be placed at a proper position, and the Kirschner wire tail can be buried in the body. Therefore, the Kirschner wire can be prevented from moving into human tissues along the long axis direction, laborious bending operation with poor accuracy can be avoided, the tail end of the Kirschner wire is convenient to be buried in the body, the pressurizing effect is not realized, the distal end is not provided with threads, and the Kirschner wire is easy to loosen and fail to fix.
For example, on the 09 th of publication 2015, an authorized bulletin number is CN204618373U, the pressure breakable Kirschner wire comprises a wire body, a head thread and a middle thread at the head of the wire body, wherein the wire body between the head thread and the middle thread is a polish rod, and the pressure breakable Kirschner wire is characterized in that the head thread pitch and the middle thread pitch are different in size, namely, the head thread pitch is larger than the middle thread pitch or smaller than the middle thread pitch; the diameter of the head thread is smaller than that of the middle section thread, and the diameter of the optical rod is smaller than the inner diameter of the head thread. The utility model can make the fracture part be connected under the pressurized condition, the healing is quick, the limit round table is vertical to the Kirschner wire, the ulna coronal process is an inclined plane, when the fracture part is vertically placed, the fracture part is easy to be excessively pressurized, the fracture part is burst, the displacement occurs, and the fixing effect of one Kirschner wire is not firm.
Based on this, the present utility model devised a pressurized ulna coronal fracture fixation device to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a compression ulna coronal process fracture fixing device which solves the problems in the prior art, can stably fix an ulna coronal process fracture block, prevent fracture block bursting caused by fixation of a plurality of Kirschner wires in operation, has a compression effect, promotes fracture healing, and prevents operation failure caused by loosening of the Kirschner wires and displacement of the fracture block.
The utility model is realized in the following way: a pressurizable ulna coronal fracture fixation device comprising: the device comprises a broken half-thread Kirschner wire, wherein the broken half-thread Kirschner wire comprises a Kirschner wire proximal end polish rod part, a broken joint part, a ball part, a Kirschner wire distal end polish rod part, a Kirschner wire distal end screw thread part and a Kirschner wire tip part; the outer diameters of the proximal polished rod part of the Kirschner wire, the distal polished rod part of the Kirschner wire and the distal threaded part of the Kirschner wire are consistent; the pitches of the thread parts at the distal end of the Kirschner wire are all equal, and the outer diameter, the pitches and the depths of the threads are all consistent; the joint of the near-end polish rod part and the ball part of the Kirschner wire is a breakable joint part.
The crown claw comprises a body and a fixed claw, and the center of the body is a hollowed-out ring.
The nut is hollow hexagonal prism-shaped, and the hollow interior of the nut is provided with threads.
The hollow screwdriver is divided into a screwdriver body, a handle, a sleeve and a through hole.
Further, the depth of the thread of the distal end thread portion of the k-wire is 0.25 mm, and the hollow screwdriver can be used for breaking by hand.
Further, the breakable joint is a horizontal annular groove with a groove depth of 0.25 mm, and the kirschner wire can be broken by hand by using the groove.
Further, the length of the distal polished rod portion of the k-wire is 15 mm, which is sufficient to vertically cross the fracture line.
Further, the number of the fixing claws is 4, and the fixing claws are distributed at four corners of the body part; the diameter of the hollowed-out ring is smaller than that of the ball part, and the ball part can be blocked.
Further, the pitch and depth of the hollow internal thread are consistent with the distal thread portion of the k-wire.
Further, the cutter body of the hollow screwdriver is of a hollow hexagonal prism structure and is consistent with the outer diameter of the nut; the through hole penetrates through the whole hollow screwdriver, the diameter of the through hole is 0.15 mm larger than that of the distal end thread part of the Kirschner wire, the through hole can be sleeved on the distal end thread part of the Kirschner wire, and the distal end thread part of the Kirschner wire is broken by hand; the sleeve is of a hollow hexagonal prism structure, the inner diameter of the sleeve is 0.15 mm larger than the outer diameter of the nut, the sleeve can slide on the cutter body and is sleeved on the nut, and the nut is rotated.
The beneficial effects of the utility model are as follows: the design of the coronary claw, the 4 fixing claws are matched with the Kirschner wire to fix the ossicle blocks at 5 points, so that the ossicle blocks can be firmly fixed without putting a plurality of Kirschner wires in, the fracture blocks are prevented from bursting, the fixation is firm, the slipping and shifting are avoided, and the early functional exercise is facilitated; the groove design of the breakable joint part can break the Kirschner wire by hand without other tools, thereby avoiding the wide-range stripping of soft tissues, reducing vascular and nerve injuries, postoperative adhesion and the like; the hollow screwdriver is designed, the nut can be rotated through the sleeve, and the distal thread part of the Kirschner wire can be broken by hand through the screwdriver body; the design of the hollow ring and the nut of the distal polished rod part, the ball part and the coronary claw of the Kirschner wire, the distal polished rod part of the Kirschner wire is long enough to cross the broken line of the bone, the diameter of the ball part is slightly larger than that of the hollow ring, so that the ball part and the hollow ring can be effectively attached, when the Kirschner wire passes through the bone cortex on the opposite side, the nut is rotated until the nut is attached to the bone cortex, and when the nut is continuously rotated, the fracture block is automatically pulled up until being pressed and closed, so that the coronary fracture part can be closed under the condition of pressurization, the fixation is firm, the healing is quick, the wound is small, and the patient can perform functional exercise at early stage; in addition, the Kirschner wire is low in price, and the economic burden of a patient is obviously reduced.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a preferred embodiment of the present utility model.
Fig. 2 is a schematic view of a breakable half-thread k-wire.
Fig. 3 is a schematic view of a coronary paw.
Fig. 4 is a schematic view of a nut.
Fig. 5 is a top view of the nut.
FIG. 6 is a schematic view of a section of a cannulated screwdriver.
Fig. 7 is a schematic side view of a cannulated screwdriver.
Fig. 8 is a schematic view of an intraoperative surgical site in accordance with an embodiment of the present utility model.
Fig. 9 is a schematic view of a postoperative surgical site according to an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1-breakable half-thread kirschner wire, 11-kirschner wire proximal polish rod part, 12-breakable joint part, 13-ball part, 14-kirschner wire distal polish rod part, 15-kirschner wire distal screw part, 16-kirschner wire tip part, 2-coronal process claw, 21-body part, 22-fixed claw, 211-hollowed ring, 3-nut, 31-screw thread, 4-hollow screwdriver, 41-cutter body, 42-handle, 43-sleeve (43), 44-through hole, 5-ulnar coronal process small fracture block, 6-unpressurized anterior fracture gap, 7-pressurized posterior fracture line and 8-contralateral cortical bone.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 7, the present utility model provides a technical solution: a pressurizable ulna coronal fracture fixation device comprising: the broken half-thread Kirschner wire 1 comprises a Kirschner wire proximal end polish rod part 11, a broken joint part 12, a ball part 13, a Kirschner wire distal end polish rod part 14, a Kirschner wire distal end screw thread part 15 and a Kirschner wire tip part 16; the outer diameters of the proximal polished rod part 11, the distal polished rod part 14 and the distal threaded part of the Kirschner wire are consistent; the pitches of the distal screw thread parts 15 of the Kirschner wire are all equal, and the outer diameter, the pitches and the depths of the screw threads are all consistent; the joint of the near-end polish rod part 11 and the ball part 13 of the Kirschner wire is a breakable joint part 12.
The coronal process claw 2, the coronal process claw 2 comprises a body 21 and a fixing claw 22, the center of the body 21 is provided with a hollowed-out ring 211, the broken half-thread Kirschner wire 1 can penetrate through the hollowed-out ring 211 to fix the ulna coronal process small fracture block 5 at five points, so that the ulna coronal process small fracture block 5 can be firmly fixed, slipping and shifting are avoided, and early functional exercise is facilitated.
The nut 3, the nut 3 is hollow hexagonal prism shape, the hollow inside of nut 3 is screw thread 31.
The hollow screwdriver 4 is divided into a screwdriver body 41, a handle 42, a sleeve 43 and a through hole 44.
The depth of the thread of the distal end thread part 15 of the k-wire is 0.25 mm, and the hollow screw driver 4 can be used for flushing and freehand breaking at the position of the nut 3, so that the excessive exposure of the k-wire and the stimulation of soft tissues are avoided.
The breakable joint 12 is a horizontal annular groove with a groove depth of 0.25 mm, and the kirschner wire can be broken by hand to avoid large-scale soft tissue stripping and reduce vascular and nerve injuries, postoperative adhesion and the like.
The length of the distal polished rod portion (14) of the Kirschner wire is 15 mm, which is sufficient to vertically cross the fracture line.
The number of the fixing claws 22 is 4, and the fixing claws are distributed at four corners of the body 21; the diameter of the hollowed-out ring 211 is smaller than that of the ball part 13, so that the ball part 13 can be clamped, and the ball part and the hollowed-out ring can be effectively attached.
The outer diameter of the nut 3 is 3 mm; the pitch and depth of the hollow internal thread 31 are consistent with those of the distal thread part 15 of the kirschner wire, when the kirschner wire passes through the opposite-side cortical bone 8, the nut 3 is rotated until the nut 3 is attached to the cortical bone, and when the nut 3 is continuously rotated, the fracture block can be automatically pulled in until being pressed and closed due to shielding of the cortical bone, so that the small fracture block 5 of the coronal process can be closed under the condition of pressurization, the fixation is firm, the healing is quick, the wound is small, and the early functional exercise of a patient is realized.
The cutter body 41 of the hollow screwdriver 4 is of a hollow hexagonal prism structure and is consistent with the outer diameter of the nut 3; the through hole 44 penetrates through the whole hollow screwdriver 4, and the diameter of the through hole is 0.15 mm larger than that of the distal end thread part 15 of the Kirschner wire, so that the through hole can be sleeved on the distal end thread part 15 of the Kirschner wire, and the distal end thread part 15 of the Kirschner wire is broken by hand; the sleeve 43 is of a hollow hexagonal prism structure, the inner diameter of the sleeve 43 is 0.15 mm larger than the outer diameter of the nut 3, and the sleeve 43 can slide on the cutter body 41 and is sleeved on the nut 3 to rotate the nut 3.
The compressible ulna coronal fracture fixing device is preferably used for the surgical treatment of ulna coronal fracture, but is also suitable for fixing small bone blocks in other types of fracture.
For ulna coronal fracture, please refer to fig. 8 and 9, the specific operations are as follows: firstly incising the skin to expose the small fracture block 5 of the ulna coronal process and the fracture gap 6 before unpressurized; the small ulna coronal process fracture block 5 is directly and slowly driven into the distal end screw thread part 15 of the Kirschner wire from front to back after being well reset until 4 fixing claws 22 firmly fix the small ulna coronal process fracture block 5; cutting the skin by about 0.5 mm along the distal end screw thread part 15 of the Kirschner wire penetrating from the ulnar coronal process to the lateral cortical bone 8, turning the nut 3 into the nut 3 by hand along the distal end screw thread part 15 of the Kirschner wire, sleeving the hollow screwdriver 4 along the distal end screw thread part 15 of the Kirschner wire after reaching the skin, sliding the sleeve 42 to clamp the nut 3, and continuing to rotate the nut 3 until the ball part 13 and the hollow ring 211 are tightly attached when the nut 3 reaches the lateral cortical bone 8; at this time, the fracture ends are tightly attached, the sleeve 42 is slipped out, and the distal end thread part 15 of the Kirschner wire is broken off at the flat nut 3 by the cutter body 41; then the near-end polish rod part 11 of the Kirschner wire is broken by hand at the breakable joint part 12, finally the suture incision is closed, and the operation is finished.
The operation process only needs a small incision, and peripheral soft tissues do not need to be peeled off, so that the injury of important vascular nerves of the elbow is avoided; the distal end thread part 15 of the Kirschner wire is driven in under direct vision, so that the disposable success rate is high; the kirschner wire distal end polish rod part 11, the ball part 13, the hollowed ring 211, the fixing claw 22 and the nut 3 can enable the ulna coronal process small fracture block 5 to be connected under the condition of pressurization, so that the fixation is firm, the healing is quick, the wound is small, and the patient can perform functional exercise early.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (7)
1. A pressurizable ulna coronal fracture fixation device comprising:
the device comprises a broken half-thread Kirschner wire (1), wherein the broken half-thread Kirschner wire (1) comprises a Kirschner wire proximal end polish rod part (11), a broken joint part (12), a ball part (13), a Kirschner wire distal end polish rod part (14), a Kirschner wire distal end screw thread part (15) and a Kirschner wire tip part (16); the outer diameters of the proximal polished rod part (11), the distal polished rod part (14) and the distal threaded part (15) of the Kirschner wire are consistent; the screw pitches of the screw thread parts (15) at the distal end of the Kirschner wire are all equal, and the outer diameter, the screw pitch and the depth of the screw thread are all consistent; the joint of the near-end polish rod part (11) and the ball part (13) of the Kirschner wire is a breakable joint part (12);
the crown claw (2), the crown claw (2) comprises a body (21) and a fixed claw (22), and the center of the body (21) is provided with a hollowed-out ring (211);
the nut (3) is hollow hexagonal prism-shaped, and the hollow interior of the nut (3) is provided with a thread (31);
the hollow screwdriver (4) is divided into a screwdriver body (41), a handle (42), a sleeve (43) and a through hole (44).
2. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the depth of the thread of the distal end thread part (15) of the Kirschner wire is 0.25 mm, and the hollow screw driver (4) can be used for breaking by hand.
3. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the breakable joint (12) is a horizontal annular groove having a groove depth of 0.25 mm, which can be used to break the k-wire by hand.
4. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the length of the distal polished rod portion (14) of the Kirschner wire is 15 mm, which is sufficient to vertically cross the fracture line.
5. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the number of the fixing claws (22) is 4, and the fixing claws are distributed at four corners of the body (21); the diameter of the hollowed-out ring (211) is smaller than that of the ball part (13), and the ball part (13) can be clamped.
6. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the pitch and depth of the thread (31) in the hollow are consistent with those of the distal end thread part (15) of the Kirschner wire.
7. A pressurizable ulna coronal fracture fixation device according to claim 1, wherein: the cutter body (41) of the hollow screwdriver (4) is of a hollow hexagonal prism structure and is consistent with the outer diameter of the nut (3); the through hole (44) penetrates through the whole hollow screwdriver (4), the diameter of the through hole is 0.15 mm larger than that of the distal end screw thread part (15) of the Kirschner wire, the through hole can be sleeved on the distal end screw thread part (15) of the Kirschner wire, and the distal end screw thread part (15) of the Kirschner wire is broken by hand; the sleeve (43) is of a hollow hexagonal prism structure, the inner diameter of the sleeve (43) is 0.15 mm larger than the outer diameter of the nut, the sleeve can slide on the cutter body (41) and is sleeved on the nut (3), and the nut (3) is rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320004198.5U CN219207244U (en) | 2023-01-04 | 2023-01-04 | Compressible ulna coronal process fracture fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320004198.5U CN219207244U (en) | 2023-01-04 | 2023-01-04 | Compressible ulna coronal process fracture fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219207244U true CN219207244U (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320004198.5U Active CN219207244U (en) | 2023-01-04 | 2023-01-04 | Compressible ulna coronal process fracture fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219207244U (en) |
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2023
- 2023-01-04 CN CN202320004198.5U patent/CN219207244U/en active Active
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