CN204618373U - The broken formula Kirschner wire of a kind of band pressurization - Google Patents
The broken formula Kirschner wire of a kind of band pressurization Download PDFInfo
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- CN204618373U CN204618373U CN201520317920.6U CN201520317920U CN204618373U CN 204618373 U CN204618373 U CN 204618373U CN 201520317920 U CN201520317920 U CN 201520317920U CN 204618373 U CN204618373 U CN 204618373U
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Abstract
The broken formula Kirschner wire of a kind of band pressurization, belongs to technical field of medical instruments.Comprise pin body, the head threads of pin body head and interlude screw thread, pin body between head threads and interlude screw thread is polished rod, it is characterized in that head threads pitch and interlude thread pitch vary in size, namely head threads pitch is greater than interlude thread pitch, or head threads pitch is less than interlude thread pitch; The diameter of head threads is less than the interlude diameter of thread, and the diameter of polished rod is less than the internal diameter of head threads.This utility model it fracture site can be made to connect under pressurization situation, healing is fast, and wound is less, patient's knochenbruch can be recovered early, avoid postoperative complication and second operation.In addition, ingenious, the operation of structure simply, safely, be easy to learn and use, easily promote.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specifically related to the broken formula Kirschner wire of a kind of band pressurization.
Background technology
Kirschner wire fixation art has simple to operate, the advantage that expense is few.Achieve certain curative effect clinically at present; but also there is a lot of limitation; such as; articular surface, fibrous cartilage dish can be destroyed during simple Kirschner wire fixation method operation; usually can cause ankylosis and pain; and common Kirschner wire easily occurs loosening, and causes backshank to infect, thus cause fixing unsuccessfully.As notification number: the technical scheme described by CN 204092145U " Novel kirschner wire ".The appearance of head threads Kirschner wire afterwards, overcome the shortcoming of common Kirschner wire to a certain extent, but cannot the reduction of the fracture be solved, as notification number: CN 201333094 " Kirschner wire ", technical scheme described by notification number: CN 2737160 " pressurized easy-to-break typr humerus nail ".
Summary of the invention
The purpose of this utility model is the disadvantage existed for above-mentioned existing Kirschner wire technology, and provide a kind of band pressurization broken formula Kirschner wire, it can play fracture and reset, and promotes fracture healing, the operative failure preventing from Kirschner wire from loosening causing.
Above-mentioned goal of the invention is achieved through the following technical solutions, the broken formula Kirschner wire of a kind of band pressurization, comprise pin body, the head threads of pin body head and interlude screw thread, pin body between head threads and interlude screw thread is polished rod, its main points are that head threads pitch and interlude thread pitch vary in size, and namely head threads pitch is greater than interlude thread pitch, or head threads pitch is less than interlude thread pitch; The diameter of head threads is less than the interlude diameter of thread, and the diameter of polished rod is less than the internal diameter of head threads.
As preferably, head threads pitch is greater than interlude thread pitch.
As preferably, pin body head is axially arranged with 2 ~ 4 and has the cutting edge that function is bored in milling.
As preferably, be shaped with spacing round platform after described pin body interlude screw thread spiral shell, between interlude screw thread and spacing round platform radial one week, be shaped with snap slot; Pin body afterbody is shaped with the electric drill joint it be contained on electric drill.
As preferably, described head threads and its tooth form of interlude screw thread are cortical bone form of thread or cancellous threads tooth form; Interlude screw thread is taper thread, and the angle of tapering is 5 ° ~ 30 °.
When this utility model uses, overcome the disadvantage that prior art exists, because its head threads pitch and interlude thread pitch vary in size, when head threads and interlude screw thread are in knochenbruch two side continuation turn pin body, it is fast that what thread pitch was large pierce knochenbruch side, it is slow that the side that thread pitch is little pierces knochenbruch side, and therefore two side knochenbruch can further automatically, until hold together by crimping.Therefore it can make fracture site connect under pressurization situation, and healing is fast, and wound is less, patient's knochenbruch can be recovered early, avoid postoperative complication and second operation.In addition, ingenious, the operation of structure simply, safely, be easy to learn and use, easily promote.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is Figure 1A place partial enlarged drawing
Fig. 3 is Figure 1B place partial enlarged drawing
Fig. 4 is this utility model using state figure
Fig. 5 is the view after this utility model implants skeleton
In figure: 1-pin body, 2-head threads, 3-interlude screw thread, 4-polished rod, P1-pitch, P2-pitch, 5-cutting edge, the spacing round platform of 6-, 7-snap slot, 8-electric drill joint, 9-fractured bones, 10-operation consent fracture gap, 11-postop fracture line.
Detailed description of the invention
Embodiment below just represented by Fig. 1-5 is further described this utility model.Comprise pin body 1, the head threads 2 of pin body 1 head and interlude screw thread 3, the pin body between head threads 2 and interlude screw thread 3 is polished rod 4, and head threads 2 pitch P 1 is greater than interlude screw thread 3 pitch P 2; The diameter of head threads 2 is less than interlude screw thread 3 diameter, and the diameter d 1 of polished rod 4 is less than the internal diameter d2 of head threads 2; Head threads 2 and its tooth form of interlude screw thread 3 are cortical bone form of thread; Interlude screw thread 3 is taper thread, and the angle of tapering is 5 °; Pin body 1 head is axially arranged with uniform 3 and has the cutting edge 5 that function is bored in milling; Described pin body 1 interlude screw thread 3 is shaped with spacing round platform 6 below, between interlude screw thread 3 and spacing round platform 6 radial one week, is shaped with snap slot 7; Pin body 1 afterbody is shaped with the electric drill joint 8 it be contained on electric drill, and electric drill joint 8 is that pin body 1 afterbody becomes equilateral triangle.
The operation of above-described embodiment:
During operation, as shown in Figure 4, the electric drill joint 8 of pin body 1 is contained on electric drill by doctor, pin body 1 is squeezed into the fracture of fractured bones 9, pitch p1 due to head threads 2 is greater than the pitch p2 of interlude screw thread 2, and the stroke rotating same number of turns head threads 2 is greater than the stroke of interlude screw thread 3, thus two side knochenbruch can further automatically, until connect generation pressure, fractured bones 9 is impelled to accelerate healing.In addition, head threads 2 internal diameter d2 is greater than the diameter d 1 of polished rod 4, be convenient to pin body 1 and squeeze into fractured bones 9 smoothly, until when spacing round platform 6 contacts with fractured bones 9, this hour hands body 1 effectively section is imbedded in fractured bones 9 completely, and operation consent fracture gap 10 is eliminated, become postop fracture line 11, namely fractured bones 9 is resetted completely.Then, to be fractureed pin body 1 by snap slot 7, as shown in Figure 5, pin body 1 effectively section is imbedded in fractured bones 9 completely.
Claims (9)
1. the broken formula Kirschner wire of band pressurization, comprise pin body, the head threads of pin body head and interlude screw thread, pin body between head threads and interlude screw thread is polished rod, it is characterized in that head threads pitch and interlude thread pitch vary in size, namely head threads pitch is greater than interlude thread pitch, or head threads pitch is less than interlude thread pitch; The diameter of head threads is less than the interlude diameter of thread, and the diameter of polished rod is less than the internal diameter of head threads.
2. the broken formula Kirschner wire of one band pressurization according to claim 1, is characterized in that head threads pitch is greater than interlude thread pitch.
3. the broken formula Kirschner wire of one band pressurization according to claim 1 and 2, is characterized in that pin body head is axially arranged with 2 ~ 4 and has the cutting edge that function is bored in milling.
4. the broken formula Kirschner wire of one band pressurization according to claim 1 and 2, it is characterized in that being shaped with spacing round platform after described pin body interlude screw thread spiral shell, between interlude screw thread and spacing round platform, radial direction is shaped with snap slot; Pin body afterbody is shaped with the electric drill joint it be contained on electric drill.
5. the broken formula Kirschner wire of one band pressurization according to claim 3, is characterized in that being shaped with spacing round platform after described pin body interlude screw thread spiral shell, between interlude screw thread and spacing round platform radial one week, is shaped with snap slot; Pin body afterbody is shaped with the electric drill joint it be contained on electric drill.
6. the broken formula Kirschner wire of one band pressurization according to claim 1 and 2, is characterized in that described head threads and its tooth form of interlude screw thread are cortical bone form of thread or cancellous threads tooth form; Interlude screw thread is taper thread, and the angle of tapering is 5 ° ~ 30 °.
7. the broken formula Kirschner wire of one band pressurization according to claim 3, is characterized in that described head threads and its tooth form of interlude screw thread are cortical bone form of thread or cancellous threads tooth form; Interlude screw thread is taper thread, and the angle of tapering is 5 ° ~ 30 °.
8. the broken formula Kirschner wire of one band pressurization according to claim 4, is characterized in that described head threads and its tooth form of interlude screw thread are cortical bone form of thread or cancellous threads tooth form; Interlude screw thread is taper thread, and the angle of tapering is 5 ° ~ 30 °.
9. the broken formula Kirschner wire of one band pressurization according to claim 4, is characterized in that described head threads and its tooth form of interlude screw thread are cortical bone form of thread or cancellous threads tooth form; Interlude screw thread is taper thread, and the angle of tapering is 5 ° ~ 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317920.6U CN204618373U (en) | 2015-05-18 | 2015-05-18 | The broken formula Kirschner wire of a kind of band pressurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317920.6U CN204618373U (en) | 2015-05-18 | 2015-05-18 | The broken formula Kirschner wire of a kind of band pressurization |
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| CN204618373U true CN204618373U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520317920.6U Active CN204618373U (en) | 2015-05-18 | 2015-05-18 | The broken formula Kirschner wire of a kind of band pressurization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658167A (en) * | 2020-07-08 | 2020-09-15 | 北京大学第三医院（北京大学第三临床医学院） | Integrated pedicle screw path detection device |
-
2015
- 2015-05-18 CN CN201520317920.6U patent/CN204618373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658167A (en) * | 2020-07-08 | 2020-09-15 | 北京大学第三医院（北京大学第三临床医学院） | Integrated pedicle screw path detection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |