CN216495571U - Internal fixing device for fracture fusion operation of calcaneus and talus - Google Patents
Internal fixing device for fracture fusion operation of calcaneus and talus Download PDFInfo
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- CN216495571U CN216495571U CN202122584530.3U CN202122584530U CN216495571U CN 216495571 U CN216495571 U CN 216495571U CN 202122584530 U CN202122584530 U CN 202122584530U CN 216495571 U CN216495571 U CN 216495571U
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Abstract
The utility model discloses an internal fixing device for a fusion operation for treating calcaneus and talus fractures, which belongs to the technical field of orthopedic implants and comprises a main nail, wherein the main nail comprises a far end for fixing to the talus, a middle polished rod for crossing the talus and the calcaneus and a near end for penetrating the calcaneus, the far end of the main nail is provided with a cutting edge and external threads, the near end of the main nail is provided with a pressurizing tail cap, the main nail is provided with a transverse locking nail hole, and a transverse locking nail is arranged in the transverse locking nail hole. The internal fixing device is stable in fixation, the fracture end is not easy to rotate and shift, and the fracture healing effect is good.
Description
Technical Field
The utility model relates to the technical field of orthopedic implants, in particular to an internal fixing device for a fusion operation for treating calcaneus and talus fractures.
Background
The current methods for treating fracture fusion of calcaneus and talus generally comprise the following three methods:
firstly, conservative treatment and plaster fixation are carried out, the fixation cost is low, the wound is small, but the fracture end is easy to displace again, the treatment period is long, the healing is slow, and the probability of fracture nonunion and deformity healing is high;
the fracture reduction is performed by incision reduction and fixation with a kirschner wire or a screw, the fixation is stable, the fracture end is not easy to displace again, but is easy to rotate and displace, the fracture healing is influenced, the malformation healing is easy to occur, and even the needle or nail is broken in serious cases;
and thirdly, fixing the steel plate, namely peeling the soft tissue and the skeleton, then placing the fixing steel plate at a preset position, and then fixing the fractured calcaneus and talus by fixing screws through fixing holes in the fixing steel plate. The fixed patient's fracture position that needs of steel sheet detumescence a week back can be implemented, and the incision is big during the operation, still need to cover the soft tissue on the skeleton simultaneously and peel off, and is great to soft tissue and nerve destruction, and postoperative pain is serious, and most patients are difficult to bear, and the postoperative still exists the difficult healing of wound, risks such as skin necrosis.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an internal fixing device for fusion surgery for treating calcaneus and talus fractures, which has stable fixation, difficult rotation and displacement of fracture ends and good fracture healing.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model provides a be used for therapeutical calcaneus, talus fracture to fuse interior fixing device for operation, includes main nail, main nail is including being used for fixing to the distal end of talus, being used for strideing across the middle part polished rod of talus and calcaneus and being used for passing the near-end of calcaneus, the distal end of main nail is equipped with blade and external screw thread, the near-end of main nail is equipped with the pressurization tail cap, be equipped with horizontal lock nail hole on the main nail, horizontal lock nail downthehole horizontal lock nail that is equipped with of nail.
Furthermore, a through hole is formed in the central axis of the main nail.
Furthermore, the far end of the main nail is provided with a plurality of inclined planes, and the plurality of inclined planes form the cutting edge.
Furthermore, the number of the cutting edges is at least two, and the cutting edges are uniformly distributed in the circumferential direction of the main nail;
and/or the included angle between the cutting edge and the central axis of the main nail is 5-20 degrees;
and/or a plurality of the inclined surfaces are uniformly distributed on the distal end of the main nail along the circumferential direction.
Further, the transverse locking nail hole comprises a first transverse locking nail hole positioned on the external thread, and the transverse locking nail comprises a first transverse locking nail positioned in the first transverse locking nail hole and used for being fixed to a talus;
and/or, the horizontal lock nail hole is including being located the horizontal lock nail hole of second on the middle part polished rod, horizontal lock nail is including being located the horizontal lock nail hole of second is used for fixing to the horizontal lock nail of second of calcaneum.
Furthermore, the proximal end of the transverse locking nail is provided with a taper thread;
and/or the rod part of the transverse locking nail is provided with an external thread;
and/or the far end of the transverse locking nail is provided with a self-tapping blade groove;
and/or the transverse locking nail and the main nail are arranged at an angle of 90 degrees.
Further, the tapered threads are symmetrical threads, and/or the external threads of the rod part of the transverse locking nail are symmetrical threads, and/or the self-tapping edge grooves are at least two and are uniformly distributed in the circumferential direction of the transverse locking nail.
Furthermore, the pressurizing tail cap is internally provided with internal threads in the through hole, the end part of the pressurizing tail cap is provided with a transmission groove communicated with the through hole, and the inner diameter of the transmission groove is larger than that of the through hole;
and/or the end part of the pressurizing tail cap is provided with a pair of symmetrical positioning grooves.
Furthermore, a tail plug is arranged in the pressurizing tail cap.
Further, the tail plug including be used for with through-hole threaded connection's screw rod section with be located screw rod section rear is used for putting into the end cap section of driving groove, the external diameter less than or equal to of end cap section the internal diameter of driving groove.
The utility model has the following beneficial effects:
the internal fixing device for the fusion operation for treating the fracture of the calcaneus and the talus comprises a main nail, wherein the main nail comprises a far end for fixing to the talus, a middle polished rod for crossing the talus and a near end for penetrating the talus, the far end of the main nail is provided with an external thread, and the near end is provided with a pressurizing tail cap, so that the fracture end can be conveniently pressurized, and the bone healing can be promoted; be equipped with horizontal lock nail hole on the main nail, horizontal lock nail downthehole horizontal lock nail that is equipped with can prevent that the main nail is rotatory, makes the difficult emergence rotation of fracture end shift, increases fixed strength to avoid the main nail because of rotatory, not hard up, move back nail etc. and lead to the operation failure. The internal fixing device is stable in fixation, the fracture end is not easy to rotate and shift, and the fracture healing effect is good.
Drawings
FIG. 1 is a schematic view of the overall structure of an internal fixation device for fusion surgery for treating fracture of calcaneus and talus;
FIG. 2 is a front view of a main nail of the internal fixation device for calcaneus and talus fracture fusion surgery according to the present invention;
FIG. 3 is a cross-sectional view of a main nail of the internal fixation device for use in the fusion surgery for treating fractures of calcaneus and talus bones according to the present invention;
FIG. 4 is a partial structural view of a main nail of the internal fixation device for calcaneus and talus fracture fusion surgery of the present invention, wherein (a) is a structure view of a proximal end of the main nail, and (b) is a structure view of a distal end of the main nail;
FIG. 5 is a schematic structural diagram of a transverse locking pin in the internal fixation device for calcaneus and talus fracture fusion surgery according to the present invention, wherein (a) is a structure diagram of a distal end of the transverse locking pin, and (b) is a front view of the transverse locking pin;
FIG. 6 is a schematic structural diagram of a tail plug of the internal fixation device for the fusion operation of treating the fracture of the calcaneus and the talus.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The utility model provides an internal fixing device for a fusion operation for treating calcaneus and talus fractures, which comprises a main nail 1 as shown in figures 1-6, wherein:
the main nail 1 comprises a far end (left end in figure 1) for fixing to the talus, a middle polished rod 1-3 for crossing the talus and the calcaneus, and a near end (right end in figure 1) for passing through the calcaneus, so that the talus and the calcaneus can be fused and fixed, the surgical incision is small, and the postoperative wound healing is good;
the cutting edge 1-1 and the external thread 1-2 are arranged at the far end of the main nail 1, and the cutting edge 1-1 can facilitate the implantation of the main nail 1 in the operation, so that the operation time is reduced;
the near end of the main nail 1 is provided with a pressurizing tail cap 1-4, the main nail 1 is provided with transverse nail locking holes 1-2-1 and 1-3-1, and transverse locking nails 2 and 2' are arranged in the transverse nail locking holes 1-2-1 and 1-3-1, so that the main nail 1 is effectively prevented from rotating, the fracture end is not easy to rotate and shift, the fixing strength is increased, and the operation failure caused by the rotation, loosening, nail withdrawing and the like of the main nail 1 is avoided.
When the main nail 1 is used in an operation, after the main nail 1 is held by a tool and implanted into a bone, the external thread 1-2 at the far end of the main nail 1 is fixed with a talus, the front end of the pressurizing tail cap 1-4 at the near end of the main nail 1 is screwed into the front end of the pre-drilled hole, the main nail 1 is continuously screwed in at the moment, the pressurizing tail cap 1-4 at the near end of the main nail 1 drives a calcaneus to move towards the far end together, and the talus moves towards the near end relative to the main nail 1 and the calcaneus under the action of the external thread 1-2 at the far end of the main nail 1, so that the pressurization of the broken end of a fracture is realized, and the healing of the bone is promoted; after the main nail 1 is implanted to a proper position, the transverse locking nails 2 and 2' are implanted along the transverse locking nail holes 1-2-1 and 1-3-1 on the main nail 1, and the implantation of the whole internal fixing device is completed.
The internal fixing device for the fusion operation for treating the fracture of the calcaneus and the talus comprises a main nail, wherein the main nail comprises a far end for fixing to the talus, a middle polished rod for crossing the talus and a near end for penetrating the talus, the far end of the main nail is provided with an external thread, and the near end is provided with a pressurizing tail cap, so that the fracture end can be conveniently pressurized, and the bone healing can be promoted; be equipped with horizontal lock nail hole on the main nail, horizontal lock nail downthehole horizontal lock nail that is equipped with can prevent that the main nail is rotatory, makes the difficult emergence rotation of fracture end shift, increases fixed strength to avoid the main nail because of rotatory, not hard up, move back nail etc. and lead to the operation failure. The internal fixing device is stable in fixation, the fracture end is not easy to rotate and shift, and the fracture healing effect is good.
As shown in fig. 3, the central axis of the main nail 1 can be provided with a through hole 1-5, when in operation, a Kirschner wire can be inserted into the through hole 1-5 of the main nail 1 to temporarily fix and guide the main nail 1, so that the main nail 1 is prevented from being driven into the articular surface and the articular surface is prevented from being damaged.
In order to conveniently form the cutting edge 1-1, the far end of the main nail 1 is provided with a plurality of inclined planes, and the plurality of inclined planes form the cutting edge. The plurality of bevels are preferably evenly distributed in the circumferential direction on the distal end of the main nail 1. Specifically, as shown in fig. 4 (b), the distal end of the main nail 1 may be provided with a first bevel 1-1-1, a second bevel 1-1-2 and a third bevel 1-1-3, which form the cutting edge 1-1. The cutting edges 1-1 are preferably at least two and are uniformly distributed in the circumferential direction of the main nail 1, the cutting edges 1-1 improve the self-tapping performance of the main nail 1, reduce the screwing force of the main nail 1, facilitate the implantation of the main nail 1 in the operation and reduce the operation time. The angle B between the cutting edge 1-1 and the central axis of the main nail 1 is preferably 5-20 degrees, and the effect is optimal. The external thread 1-2 at the distal end of the main nail 1 may be a deep thread, a shallow thread, a symmetrical thread, and the number of the external thread 1-2 is preferably 1-3 to facilitate the quick screwing-in of the main nail 1.
As shown in fig. 1-3, the transverse locking nail hole may include a first transverse locking nail hole 1-2-1 located on the external thread 1-2 at the distal end of the main nail 1, and the transverse locking nail includes a first transverse locking nail 2 located in the first transverse locking nail hole 1-2-1 and used for being fixed to the talus bone, so that the external thread 1-2 at the distal end of the main nail 1 is screwed into the talus bone, the first transverse locking nail 2 fixes the distal end of the main nail 1 in the talus bone through the first transverse locking nail hole 1-2-1, the main nail 1 and the transverse locking nail 2 form a certain angle (e.g. 90 °), and form a stable frame structure with the talus bone, thereby effectively preventing the main nail 1 from rotating, increasing the fixing strength, and avoiding the failure of the main nail 1 due to rotation, loosening, nail withdrawal, and the like.
Further, the transverse locking nail holes may include a second transverse locking nail hole 1-3-1 (specifically, the second transverse locking nail hole 1-3-1 may be located at an end of the central polish rod 1-3 of the main nail 1 near the pressurizing tail cap 1-4), where the transverse locking nail includes a second transverse locking nail 2 ' located in the second transverse locking nail hole 1-3-1 for fixing to the calcaneus, the second transverse locking nail 2 ' fixes the central portion of the main nail 1 in the calcaneus through the second transverse locking nail hole 1-3-1, the main nail 1 forms a certain angle (e.g. 90 °) with the transverse locking nail 2 ' to form a stable frame structure with the calcaneus, so as to effectively prevent the main nail 1 from rotating and increase the fixing strength. In the embodiment shown in the drawings, the number of the second transverse locking nail holes 1-3-1 is preferably 2 and is arranged along the length direction of the main nail 1.
As shown in fig. 3 and fig. 4 (a), in order to conveniently hold and implant the main nail 1, the pressurizing tail cap 1-4 may be provided with internal threads 1-4-1 (specifically, left-handed threads) in the through hole 1-5, the end of the pressurizing tail cap 1-4 is provided with a transmission groove 1-4-3 (specifically, a quincunx transmission groove) communicated with the through hole 1-5, the inner diameter of the transmission groove 1-4-3 is larger than the inner diameter of the through hole 1-5, thus the instrument can realize the self-sustaining main nail 1 by matching and fixing the thread of the head of the instrument and the internal thread 1-4-1 in the through hole 1-5, and when the main nail 1 is screwed in, the transmission part is the transmission groove 1-4-3 instead of the internal thread 1-4-1 in the through hole 1-5, so that the strength of the main nail 1 is increased.
As shown in fig. 5, the proximal ends of the transverse locking nails 2 and 2 'can be provided with tapered threads 2-1, and the proximal ends of the transverse locking nails 2 and 2' can be completely embedded in bones during operation, so that the tissue irritation is reduced, and the postoperative complications are reduced. The tapered thread 2-1 is preferably a symmetrical thread, the number of lines of which is preferably 1-3, to facilitate quick screwing-in of the cross-bolts 2, 2'.
The shaft of the cross locking nail 2, 2 'may be provided with an external thread 2-2, preferably a symmetrical thread, to increase the holding force of the cross locking nail 2, 2' on the bone and improve the fixation.
The far ends of the transverse locking nails 2 and 2 'can be provided with self-tapping edge grooves 2-3, so that the self-tapping performance of the transverse locking nails 2 and 2' is improved, the screwing-in force in the operation is reduced, the operation time is reduced, and the operation is convenient and rapid. The self-tapping edge grooves 2-3 are preferably at least two and uniformly distributed in the circumferential direction of the cross locking nail 2, 2 ' to further improve the self-tapping performance of the cross locking nail 2, 2 ' and facilitate the implantation of the cross locking nail 2, 2 ' in the operation. In the embodiment shown in the drawings, the number of the self-tapping edge grooves 2-3 is 3.
As shown in figures 1 and 6, in order to position the main nail 1, the end of the pressurizing tail cap 1-4 can be provided with a pair of symmetrical positioning grooves 1-4-2. In order to avoid the tissue from expanding into the through holes 1-5 of the main nail 1 and reduce the probability of postoperative complications, a tail plug 3 can be arranged in the pressurizing tail cap 1-4.
The tail plug 3 can adopt various structural forms which are easily thought by a person skilled in the art, for example, the tail plug is a plug column which is in plug fit with the through hole; the tail plug 3 of the utility model preferably takes the following structural form:
the tail plug 3 comprises a screw section 3-1 for being in threaded connection with the through hole 1-5 (namely for plugging the through hole 1-5) and an end cap section 3-2 which is positioned behind the screw section 3-1 and is used for being placed into the transmission groove 1-4-3, and the outer diameter of the end cap section 3-2 is smaller than or equal to the inner diameter of the transmission groove 1-4-3, so that the tail plug 3 can plug the through hole 1-5 and the transmission groove 1-4-3, and tissues can be well prevented from expanding into the through hole 1-5 of the main nail 1. Preferably, the screw thread of the screw section 3-1 can be a left-handed screw thread, which can prevent the tail plug 3 from loosening.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a be used for treatment calcaneus, talus fracture to fuse interior fixing device for operation which characterized in that, includes main nail, main nail is including being used for fixing to the distal end of talus, being used for strideing across the middle part polished rod of talus and calcaneus and being used for passing the near-end of calcaneus, the distal end of main nail is equipped with blade and external screw thread, the near-end of main nail is equipped with the pressurization tail cap, be equipped with horizontal lock nail hole on the main nail, be equipped with horizontal lock nail in the horizontal lock nail hole.
2. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 1, wherein a through hole is formed in a central axis of the main nail.
3. The internal fixation device for use in a fusion surgery of treating fractures of a calcaneus and a talus as claimed in claim 1, wherein the distal end of the main nail is provided with a plurality of bevels, the plurality of bevels forming the cutting edge.
4. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 3, wherein the cutting edges are at least two and are evenly distributed in the circumferential direction of the main nail;
and/or the included angle between the cutting edge and the central axis of the main nail is 5-20 degrees;
and/or a plurality of the inclined surfaces are uniformly distributed on the distal end of the main nail along the circumferential direction.
5. The internal fixation device for use in a fusion surgery to treat a fracture of a calcaneus bone and a talus bone as claimed in claim 1, wherein said cross locking pin hole comprises a first cross locking pin hole located on said external thread, said cross locking pin comprising a first cross locking pin located in said first cross locking pin hole for fixation to a talus bone;
and/or, the horizontal lock nail hole is including being located the horizontal lock nail hole of second on the middle part polished rod, horizontal lock nail is including being located the horizontal lock nail hole of second is used for fixing to the horizontal lock nail of second of calcaneum.
6. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 1, wherein the proximal end of the transverse locking nail is provided with a tapered thread;
and/or the rod part of the transverse locking nail is provided with an external thread;
and/or the far end of the transverse locking nail is provided with a self-tapping blade groove;
and/or the transverse locking nail and the main nail are arranged at an angle of 90 degrees.
7. The internal fixation device for use in fusion surgery of calcaneus and talus fractures according to claim 6, wherein the tapered threads are symmetrical threads, and/or the external threads of the shaft portion of the cross locking nail are symmetrical threads, and/or the self-tapping edge grooves are at least two and evenly distributed in the circumferential direction of the cross locking nail.
8. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 2, wherein the pressurizing tail cap is internally provided with an internal thread in the through hole, the end of the pressurizing tail cap is provided with a transmission groove communicated with the through hole, and the inner diameter of the transmission groove is larger than that of the through hole;
and/or the end part of the pressurizing tail cap is provided with a pair of symmetrical positioning grooves.
9. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 8, wherein a tail plug is arranged in the compression tail cap.
10. The internal fixation device for fusion surgery of calcaneus and talus fractures according to claim 9, wherein the tail plug includes a screw section for connecting with the internal thread of the through hole and an end cap section located behind the screw section for placing in the transmission groove, and the outer diameter of the end cap section is smaller than or equal to the inner diameter of the transmission groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584530.3U CN216495571U (en) | 2021-10-26 | 2021-10-26 | Internal fixing device for fracture fusion operation of calcaneus and talus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584530.3U CN216495571U (en) | 2021-10-26 | 2021-10-26 | Internal fixing device for fracture fusion operation of calcaneus and talus |
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| CN216495571U true CN216495571U (en) | 2022-05-13 |
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| CN202122584530.3U Active CN216495571U (en) | 2021-10-26 | 2021-10-26 | Internal fixing device for fracture fusion operation of calcaneus and talus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2615781A (en) * | 2022-02-17 | 2023-08-23 | Pbc Innovations Ltd | Bone fixing implant devices, systems and methods |
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2021
- 2021-10-26 CN CN202122584530.3U patent/CN216495571U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2615781A (en) * | 2022-02-17 | 2023-08-23 | Pbc Innovations Ltd | Bone fixing implant devices, systems and methods |
| GB2615781B (en) * | 2022-02-17 | 2024-07-10 | Pbc Innovations Ltd | Bone fixing implant devices, systems and methods |
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