CN204364106U - Femur and tibia humerus locking intramedullary needle - Google Patents
Femur and tibia humerus locking intramedullary needle Download PDFInfo
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- CN204364106U CN204364106U CN201420855401.0U CN201420855401U CN204364106U CN 204364106 U CN204364106 U CN 204364106U CN 201420855401 U CN201420855401 U CN 201420855401U CN 204364106 U CN204364106 U CN 204364106U
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- needle body
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- pin
- sleeve
- femur
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Abstract
This utility model relates to a kind of femur and tibia humerus locking intramedullary needle, scheme is, main pin is made up of with the coaxial sleeve be connected of main needle body top and its cylindrical main needle body, sleeve outer diameter is less than main needle body and sleeve is provided with external screw thread, the curved channel be communicated with barrel bore is provided with in main needle body, the autonomous needle body bottom, lower end of curved channel is in communication with the outside, and the middle part of curved channel has at least to dispose to be in communication with the outside and to have at least to dispose on the left of main needle body and is in communication with the outside on the right side of main needle body; Also comprise the closed nut matched with sleeve external screw thread; Also comprise elastic pair pin, elastic pair pin is made up of secondary needle body and backshank, and secondary needle body matches with curved channel, and backshank diameter is less than secondary needle body; This utility model is suitable for long bone fractures except far-end, operation subject range expands and avoids femur to beat fixing interlocking intramedullary nail to kneed damage, need only entry point otch, minimizing operation wound, shorten operating time, be beneficial to patient and recover and reduce operation risk.
Description
Technical field
This utility model relates to a kind of medical apparatus, particularly a kind of simple to operate, use safety, wound are little, therapeutic effect is good femur and tibia humerus locking intramedullary needle.
Background technology
The long bones such as current adult thighbone, tibia and humerus key position fracture can adopt fixing interlocking intramedullary nail to fix or Plate internal fixiation.Elasticity intramedullary needle wound is less, but due to its limited strength, at present only for the treatment of long bones in children fracture.Steel plate is eccentric fixing because of it, so Yi Beisuinei center fixation replaced on long bone cadre fractures, but fixing interlocking intramedullary nail has the following disadvantages: 1, direct motion fixing interlocking intramedullary nail is not suitable for long diaphysis section fracture far away, humerus, distal tibial fracture need row Plate internal fixiation, and distal femoral fractures need be beaten fixing interlocking intramedullary nail and fix.But Plate internal fixiation system bias is fixing and wound is comparatively large, and beat and hand over intramedullary needle to have certain damage to knee joint, the later stage may cause traumatic arthritis to affect joint motion.2, fixing interlocking intramedullary nail needs near-end, distal incision, relatively increases operation wound, if expand marrow or inserting needle position deviation in operating process, far-end locking exists locking difficult problem.
Utility model content
For above-mentioned situation, for overcoming the defect of prior art, the object of this utility model is just to provide a kind of femur and tibia humerus locking intramedullary needle, effectively solves the technical problem in above background technology.
Its solution is, comprise main pin, main pin is made up of with the coaxial sleeve be connected of main needle body top and its cylindrical main needle body, sleeve outer diameter is less than main needle body and sleeve is provided with external screw thread, the curved channel be communicated with barrel bore is provided with in main needle body, the autonomous needle body bottom, lower end of curved channel is in communication with the outside, and the middle part of curved channel has at least to dispose to be in communication with the outside and to have at least to dispose on the left of main needle body and is in communication with the outside on the right side of main needle body; Also comprise the closed nut matched with sleeve external screw thread; Also comprise elastic pair pin, elastic pair pin is made up of secondary needle body and backshank, and secondary needle body matches with curved channel, and backshank diameter is less than secondary needle body.
It has the following advantages: 1, be suitable for long bone fractures except far-end, and operation subject range expands and avoids femur to beat fixing interlocking intramedullary nail to kneed damage.2, simple, the operating technology of operation technique is easily grasped, need only entry point otch, reduces operation wound, shortens operating time, thus is beneficial to patient and recovers and reduce operation risk.3, gather the advantage of elasticity intramedullary needle and fixing interlocking intramedullary nail, both decreased wound, had and reach effective intensity, thus be applicable to the treatment of adult's long bone shaft fracture.
Accompanying drawing explanation
Fig. 1 is the main pin front view of this utility model.
Fig. 2 is Fig. 1 right view.
Fig. 3 be in Fig. 2 A-A to sectional view.
Fig. 4 is the main pin axonometric chart of this utility model.
Fig. 5 is the secondary pin front view of this utility model.
Fig. 6 is the secondary pin axonometric chart of this utility model.
Fig. 7 is that in this utility model, secondary pin is inserted into the axonometric chart in main pin.
Fig. 8 is that in this utility model, secondary pin is inserted into the front view in main pin.
Fig. 9 is that in this utility model, secondary pin is inserted into the front view be screwed in main pin and by closed nut on sleeve.
Figure 10 is that in this utility model, secondary pin is inserted into the axonometric chart be screwed in main pin and by closed nut on sleeve.
Figure 11 is this utility model using state schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
Provided by Fig. 1 to Figure 11, this utility model comprises main pin 1, main pin 1 is made up of with the coaxial sleeve 102 be connected of main needle body 101 top and its cylindrical main needle body 101, sleeve 102 external diameter is less than main needle body 101 and sleeve 102 is provided with external screw thread, the curved channel 103 with sleeve 102 inner space is provided with in main needle body 101, autonomous needle body 101 bottom, lower end of curved channel 103 is in communication with the outside, and the middle part of curved channel 103 has at least to dispose to be in communication with the outside and to have at least to dispose on the left of main needle body 101 and is in communication with the outside on the right side of main needle body 101; Also comprise the closed nut 2 matched with sleeve 102 external screw thread; Also comprise elastic pair pin 3, elastic pair pin 3 is made up of secondary needle body 301 and backshank 302, and secondary needle body 301 matches with curved channel 103, and backshank 302 diameter is less than secondary needle body 301.
Described elastic pair pin 301 is for longitudinally establishing veined titanium alloy elastic pin.
Described elastic pair pin 301 surface is rough-shape, to increase its frictional force.
The external diameter of described closed nut 2 is not more than the external diameter of main needle body.
Described main needle body 101 is coniform away from one end of sleeve.
There is the hollow passageway (i.e. curved channel 103) of stretching to different directions main needle body 101 inside of the present utility model, secondary pin 3 is the titanium alloy elastic pin that slightly thin, the secondary needle body of a tail end has longitudinal texture, surface is more coarse, add frictional force, main pin 1 upper end is hollow, band external screw thread, secondary pin 3 can lead to far-end along curved channel 103 radian direction after being inserted by main needle sleeve 102 inner chamber, and elastic pair pin 3 enters main pin 1 and after controlling fracture site displacement, the closed nut 2 of main pin 1 tightens main pin 1 near-end.In concrete operation process, after fracture site open reduction or closed draw reset, femur is entry point by tibial tubercle near-end, humerus by greater tubercle rear by intertrochanteric fossae, tibia, after gag opening, pulp cavity expands, select main pin 1 and the elastic pair pin 3 of suitable diameter, after elastic pair pin 3 being inserted main pin 1 proximal hub hole, pulp cavity is inserted in direct motion, utilize prelum that elastic pair pin is firmly inserted main pin 1 inner chamber by elastic pair pin 3 tail end, due to pressurization, secondary pin 3 crooked radian will with medullary cavity inwall rigid contact, thus control fracture site displacement and rotate.Finally elastic pair pin 3 exposed parts is wiped out the rear closed nut 2 of main pin 1 that utilizes itself and main pin 1 are fixedly secured.
It has the following advantages: 1, be suitable for long bone fractures except far-end, and operation subject range expands and avoids femur to beat fixing interlocking intramedullary nail to kneed damage.2, simple, the operating technology of operation technique is easily grasped, need only entry point otch, reduces operation wound, shortens operating time, thus is beneficial to patient and recovers and reduce operation risk.3, gather the advantage of elasticity intramedullary needle and fixing interlocking intramedullary nail, both decreased wound, had and reach effective intensity, thus be applicable to the treatment of adult's long bone shaft fracture.
Claims (5)
1. a femur and tibia humerus locking intramedullary needle, comprise main pin (1), it is characterized in that, main pin (1) is made up of the coaxial sleeve (102) be connected of cylindrical main needle body (101) and main needle body (101) top and its, sleeve (102) external diameter is less than main needle body (101) and sleeve (102) is provided with external screw thread, the curved channel (103) with sleeve (102) inner space is provided with in main needle body (101), autonomous needle body (101) bottom, lower end of curved channel (103) is in communication with the outside, the middle part of curved channel (103) have at least dispose in main needle body (101) left side be in communication with the outside and have at least dispose in main needle body (101) right side be in communication with the outside, also comprise the closed nut (2) matched with sleeve (102) external screw thread, also comprise elastic pair pin (3), elastic pair pin (3) is made up of secondary needle body (301) and backshank (302), and secondary needle body (301) matches with curved channel (103), and backshank (302) diameter is less than secondary needle body (301).
2. femur and tibia humerus locking intramedullary needle according to claim 1, is characterized in that, described elastic pair pin (301) is for longitudinally establishing veined titanium alloy elastic pin.
3. femur and tibia humerus locking intramedullary needle according to claim 1, is characterized in that, described elastic pair pin (301) surface is rough-shape.
4. femur and tibia humerus locking intramedullary needle according to claim 1, is characterized in that, the external diameter of described closed nut (2) is not more than the external diameter of main needle body (101).
5. femur and tibia humerus locking intramedullary needle according to claim 1, is characterized in that, described main needle body (101) is coniform away from one end of sleeve (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420855401.0U CN204364106U (en) | 2014-12-30 | 2014-12-30 | Femur and tibia humerus locking intramedullary needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420855401.0U CN204364106U (en) | 2014-12-30 | 2014-12-30 | Femur and tibia humerus locking intramedullary needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204364106U true CN204364106U (en) | 2015-06-03 |
Family
ID=53320366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420855401.0U Expired - Fee Related CN204364106U (en) | 2014-12-30 | 2014-12-30 | Femur and tibia humerus locking intramedullary needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204364106U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108030544A (en) * | 2018-01-30 | 2018-05-15 | 芜湖东旭威宇医疗器械科技有限公司 | One kind pressurization spicule |
-
2014
- 2014-12-30 CN CN201420855401.0U patent/CN204364106U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108030544A (en) * | 2018-01-30 | 2018-05-15 | 芜湖东旭威宇医疗器械科技有限公司 | One kind pressurization spicule |
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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: 20150603 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |