CN203138666U - Pressurized thread needle for fixing fracture - Google Patents
Pressurized thread needle for fixing fracture Download PDFInfo
- Publication number
- CN203138666U CN203138666U CN 201320062644 CN201320062644U CN203138666U CN 203138666 U CN203138666 U CN 203138666U CN 201320062644 CN201320062644 CN 201320062644 CN 201320062644 U CN201320062644 U CN 201320062644U CN 203138666 U CN203138666 U CN 203138666U
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- rod
- thread
- fracture
- screw thread
- screw
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Abstract
The utility model discloses a pressurized thread needle for fixing fracture, which comprises a rod body, wherein the rod body is provided with a front end and a rear end, a first thread is arranged on the front end of the rod body, the rod body is further provided with a second thread, the distance between the first thread and the second thread is 1-3cm, and the pitch of the second thread is bigger than the pitch of the first thread. Because the first thread is arranged on the front end of the rod body and the rod body is further provided with the second thread, the rod body and a second fracture position are fixed through the first thread after the rod body passes through a first fracture position, the rod body and the first fracture position are fixed through the second thread, simultaneously because the pitch of the second thread is bigger than the pitch of the first thread, a nail is prevented from sliding. When the rod body rotates, the force of the second thread enables the first fracture position and the second fracture position to be closely pulled, the extrusion force of the second fracture position is increased, the healing of the fracture is speeded up, and the pressurized thread needle for fixing fracture is particularly suitable for cases of senile proximal humeral fractures.
Description
Technical field
This utility model relates to the fixation device in a kind of fracture operation, more specifically is a kind of fracture fixation pressurization screw needle, belongs to and builds technical field of medical instruments.
Background technology
In bone surgery, need some Kirschner wires or screw that fracture site is fixed usually, comprise the body of rod at these Kirschner wires or screw, generally be provided with a screw thread that pitch is certain at the body of rod.And old people's osteoporosis (skeleton poor toughness, more crisp) often, regeneration power also decreases, adopt above-mentioned Kirschner wire or screw fixedly the time, the body of rod of Kirschner wire or screw passes first position of fracture, by screw thread second position of Kirschner wire or screw and fracture is fixed.The Kirschner wire of said structure or screw are fixedly during fracture site, because Kirschner wire or the screw body of rod only have a screw thread that pitch is certain, though making second position of Kirschner wire or screw and fracture easily fixes, but a little less than the first position bed knife of fracturing, make two position extruding forces of fracture not strong, influence senile fracture's healing, this is more obvious in senile proximal humeral fracture case.The deficiency that is difficult to locate when also there are operation in existing Kirschner wire or screw in addition.Screw has fixing length and limited length, and is poor with the suitability of concrete case; In addition because the length of Kirschner wire is longer, when fixing fracture site, its end needs bending, and the out-of-flatness of bending afterbody, later stage Diazolidinyl Urea, increase patient's misery.
The utility model content
At above-mentioned situation, the problem that this utility model quasi-solution is determined provides a kind of fracture fixation pressurization screw needle, and it can prevent on-slip nail, increases by two position extruding forces that make fracture, accelerates the healing of fracture, especially suitable senile proximal humeral fracture case.Have operation simultaneously and the time locate characteristics easily, also can select the length of pressurization screw needle according to fracture case concrete condition in addition, fixedly during fracture site, do not need its end is bent, reduce patient's wound again.
For achieving the above object, this utility model is by the following technical solutions: a kind of fracture fixation is with the pressurization screw needle, it comprises the body of rod, the described body of rod has front end and afterbody, the front end of the described body of rod has first screw thread, also be provided with second screw thread on the described body of rod, the distance between described first screw thread and second screw thread is 1-3 centimetre; The pitch of described second screw thread is greater than the pitch of first screw thread.
The pitch ratio of described first screw thread and second screw thread is 1: 1.2-3.
As improvement, the axis direction of the described body of rod has perforation, and namely the body of rod is hollow.Described second screw thread has the stricture of vagina that fractures more than one or two towards the body of rod of afterbody.Distance between the described geosutures more than two is 0.5-2 centimetre.
Above-mentioned fracture fixation pressurization screw needle, it also comprises handle, and described handle has action bars and dowel steel, and described dowel steel is provided with fixing hole, and described fixing hole is the above polygons in three limits; The afterbody of the described body of rod has union joint, and the union joint of the afterbody of the described body of rod is also for being combined into polygon more than three limits with fixing hole shape size kissing.
Adopt such scheme, fracture fixation of the present utility model because the front end of the body of rod has first screw thread, also is provided with second screw thread with the pressurization screw needle on the body of rod.Like this after the body of rod passes first position of fracture, by first screw thread second position of the body of rod and fracture is fixed, by second screw thread first position of the body of rod and fracture is fixed, simultaneously because the pitch of second screw thread greater than the pitch of first screw thread, can be prevented on-slip nail.When rotating the body of rod, the power of two screw threads makes fracture first position and two position tensions, increases by two position extruding forces that make fracture, accelerates the healing of fracture, especially is fit to senile proximal humeral fracture case.
The axis direction of the body of rod has perforation in addition, can insert positioning needle in perforation, the location when conveniently being screwed into the pressurization screw needle.
Second screw thread has the stricture of vagina that fractures more than one or two towards the body of rod of afterbody.Like this can be according to fracture case concrete condition, select the suitable length of pressurization screw needle after, fracture at the stricture of vagina place that fractures, it is simple to operate that its end is fractureed, broken ends of fractured bone slyness reduces patient's wound again.When the setting of handle, convenient operation to the rotation of pressurization screw needle.
Description of drawings
Fig. 1 this utility model fracture fixation structural representation of pressurization screw needle;
Fig. 2 is that the A-A of Fig. 1 is to the amplification assumption diagram of analysing and observe direction.
Among the figure: the 1-body of rod, 2-first screw thread, 3-second screw thread, 4-perforation, the 5-stricture of vagina that fractures, 6-handle, 7-action bars, 8-dowel steel, 9-fixing hole, 10-union joint.
The specific embodiment
As shown in Figure 1, this utility model fracture fixation pressurization screw needle, it comprises the body of rod 1, the described body of rod has front end and afterbody, the front end of the described body of rod 1 has first screw thread 2, also is provided with second screw thread 3 on the described body of rod 1, and the distance between described first screw thread 2 and second screw thread 3 is 1-3 centimetre; The pitch of described second screw thread 3 is greater than the pitch of first screw thread 2.The pitch ratio of described first screw thread 2 and second screw thread 3 is generally 1: 1.2-3.
The axis direction of the described body of rod 1 has perforation 4, and namely the described body of rod 1 is hollow.
Described second screw thread 3 has the stricture of vagina 5 that fractures more than one or two towards the body of rod 1 of afterbody, and one or six of present embodiments are example.The described distance that fractures between the stricture of vagina 5 more than two is 0.5-2 centimetre.
Above-mentioned fracture fixation pressurization screw needle, it also comprises handle 6, and described handle 6 has action bars 7 and dowel steel 8, and described dowel steel 8 is provided with fixing hole 9, and described fixing hole 9 is the above polygons in three limits, is example here with the triangle; The afterbody of the described body of rod 1 has union joint 10, and the union joint 10 of the afterbody of the described body of rod 1 is also for being combined into polygon (referring to Fig. 2) more than three limits with fixing hole 9 shapes sizes kissing.
Claims (6)
1. a fracture fixation is with the pressurization screw needle, it comprises the body of rod (1), the described body of rod (1) has front end and afterbody, the front end of the described body of rod (1) has first screw thread (2), it is characterized in that also being provided with on the described body of rod (1) second screw thread (3), the distance between described first screw thread (2) and second screw thread (3) is 1-3 centimetre; The pitch of described second screw thread (3) is greater than the pitch of first screw thread (2).
2. fracture fixation according to claim 1 is characterized in that described first screw thread (2) and the pitch ratio of second screw thread (3) are 1: 1.2-3 with the pressurization screw needle.
3. fracture fixation according to claim 1 is characterized in that with the pressurization screw needle axis direction of the described body of rod (1) has perforation (4), and namely the described body of rod (1) is hollow.
According to claim 1 or 2 or 3 described fracture fixations with the pressurization screw needles, it is characterized in that described second screw thread (3) has the stricture of vagina that fractures (5) more than one or two towards the body of rod (1) of afterbody.
5. fracture fixation according to claim 4 is characterized in that with the pressurization screw needle distance between the described stricture of vagina that fractures (5) more than two is 0.5-2 centimetre.
6. according to claim 1 or 2 or 3 described fracture fixations pressurization screw needle, it is characterized in that it also comprises handle (6), described handle (6) has action bars (7) and dowel steel (8), described dowel steel (8) is provided with fixing hole (9), and described fixing hole (9) is the above polygons in three limits; The afterbody of the described body of rod (1) has union joint (10), and the union joint (10) of the afterbody of the described body of rod (1) is also for being combined into the above polygon in three limits with fixing hole (9) shape size kissing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062644 CN203138666U (en) | 2013-02-04 | 2013-02-04 | Pressurized thread needle for fixing fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062644 CN203138666U (en) | 2013-02-04 | 2013-02-04 | Pressurized thread needle for fixing fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203138666U true CN203138666U (en) | 2013-08-21 |
Family
ID=48966230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320062644 Expired - Fee Related CN203138666U (en) | 2013-02-04 | 2013-02-04 | Pressurized thread needle for fixing fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203138666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496502A (en) * | 2015-12-21 | 2016-04-20 | 武汉康斯泰德科技有限公司 | Pressurizing metal spicule |
| CN105496528A (en) * | 2016-01-16 | 2016-04-20 | 北京大学深圳医院 | Percutaneous breakable cannulated lag screw and assembly for bone connection |
| CN107411813A (en) * | 2017-08-29 | 2017-12-01 | 苏州爱得科技发展股份有限公司 | A kind of pressurized screw guide pin |
-
2013
- 2013-02-04 CN CN 201320062644 patent/CN203138666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496502A (en) * | 2015-12-21 | 2016-04-20 | 武汉康斯泰德科技有限公司 | Pressurizing metal spicule |
| CN105496528A (en) * | 2016-01-16 | 2016-04-20 | 北京大学深圳医院 | Percutaneous breakable cannulated lag screw and assembly for bone connection |
| CN107411813A (en) * | 2017-08-29 | 2017-12-01 | 苏州爱得科技发展股份有限公司 | A kind of pressurized screw guide pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |