CN204971533U - Coaptation locking screw - Google Patents
Coaptation locking screw Download PDFInfo
- Publication number
- CN204971533U CN204971533U CN201520755709.2U CN201520755709U CN204971533U CN 204971533 U CN204971533 U CN 204971533U CN 201520755709 U CN201520755709 U CN 201520755709U CN 204971533 U CN204971533 U CN 204971533U
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- China
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- nail
- head
- screw
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a coaptation locking screw belongs to bone surgery apparatus technical field. The utility model discloses a nail pole portion, the one end of nail pole portion be most advanced portion, and the other end of following closely pole portion is head of a nail portion, nail pole portion be the global glossy cylinder body of rod, pointed end portion be global glossy cone, head of a nail portion make with the solid of revolution shape of locking plate's mounting hole adaptation, head of a nail portion global go up the preparation have with the locking screw thread of locking plate's mounting hole internal thread looks adaptation, the tip of head of a nail portion has the screw connecting portion of screwing. The utility model discloses specially adapted children and teenagers' metaphysis are fractured, can overcome the shortcoming of ke shi needle and adult locking plate screw, make the fixed efficiency of children teenagers' four limbs metaphysis fracture more definitely reach the stability, reduce operation complication and sequelae.
Description
Technical field
Patent of the present invention relates to a kind of synthetism screw, belongs to orthopedic medical device technical field.
Background technology
At present, do in the fracture operation process of rear end at children and adolescents extremity, the fixed form of usual application is all Kirschner wire fixation setting board of skeleton end fracture, Kirschner wire intersects fixing, Kirschner wire is by epiphyseal plate, and this position fracture can not be applied threaded screw and fix, because threaded screws easily damages epiphysis, child or teenager epiphysis is caused early to close, in the future the residual possibility that has deformed limbs.And find in this position Fracture of prolonged application Kirschner wire fixation, Kirschner wire fixation inefficiency, mechanical property is unstable, has the Kirschner wire withdraw of the needle, bending, fracture, migration phenomenon even in vivo.Cannot ensure the biomechanical stability of fracture fixation, at setting board of skeleton end fracture, when fracture involves articular surface, often need stable support and strong mechanics to stablize, simple Kirschner wire fixation usefulness often cannot reach the requirement of this position fracture fixation.In the fracture operation process of Adult Dry rear end, often need to support bridge joint Interal fixation fracture site, adopt locking steel plate-lock screw to fix fracture site at present more, locking steel plate-screw system can reach good angle stability and good mechanical support Stabilization, steel plate-screw system can realize pressurization at fracture site, but the lock screw being applied to adult is followed closely on bar and is threaded, ailhead there is row cut groove, there is damaging action, not by epiphyseal plate to children and youth metaphysis epiphyseal plate.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art part, this utility model provides synthetism lock screw, be specially adapted to child and teenager setting board of skeleton end fracture, the shortcoming of Kirschner wire and adult's locking steel plate screw can be overcome, make the fixing usefulness of children and youth extremity setting board of skeleton end fracture more definite and stable, reduce postoperative complication and sequela.
This utility model is achieved by the following technical solution: a kind of synthetism lock screw, it comprises nail bar portion, the one end in nail bar portion is point, the other end in nail bar portion is head of a nail portion, described nail bar portion is the cylinder body of rod that side face is smooth, described point is the cone that side face is smooth, described head of a nail portion is made into the revolution shape with the installing hole adaptation of locking steel plate, the side face in head of a nail portion is manufactured with the locking screw thread suitable with the installing hole female thread of locking steel plate, and the end in head of a nail portion has screw to screw connecting portion.
Further, described head of a nail portion is made into Rotary-table, and Rotary-table narrows gradually from outer end to nail direction, bar portion.
Further, it is the counterbore coordinated with erecting tools made on the end face in head of a nail portion that described screw screws connecting portion.
Further, described counterbore is the hexagonal counterbore suitable with die nut.
Further, described head of a nail portion, nail bar portion and point are made by rustless steel or titanium alloy material.
The beneficial effects of the utility model are:
1, the main application of this utility model is children and youth bone metaphysis epiphysis position, is down to minimum by screw to epiphyseal injury.The shortcoming of Kirschner wire and adult's locking steel plate screw can be overcome, make the fixing usefulness of children and youth extremity setting board of skeleton end fracture more definite and stable, reduce postoperative complication and sequela.
2, the screw thread design in this utility model head of a nail portion, can be locked on steel plate, and screw angles stability fixation is stronger.
3, this utility model is followed closely without screw thread in bar portion, and to children and youth epiphysis not damaged, and screw lock is on steel plate, and screw not easily exits loosening.
4, this utility model is easy for installation, the design of interior hexagonal, installs and convenient to remove.
5, this utility model adopts rustless steel or Titanium Alloy Design, and biocompatibility is good, and in human body, foreign body reaction degree is low.
Accompanying drawing explanation
According to drawings and embodiments this utility model is further illustrated below.
Fig. 1 is this utility model structural representation;
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the application schematic diagram of this utility model in teenager intercondylar fracture of the humerus.
In figure, 1, head of a nail portion, 2, nail bar portion, 3, point, 4, locking screw thread, 5, counterbore, 6, epiphyseal plate, 7, this utility model lock screw, 8, locking steel plate, 9, plain screw, 10, fracture line.
Detailed description of the invention
A kind of synthetism lock screw as shown in Figure 1 and Figure 2, it comprises nail bar portion 2, the one end in nail bar portion 2 is point 3, the other end in nail bar portion 2 is head of a nail portion 1, described nail bar portion 2 is the cylinder body of rod that side face is smooth, and bar portion 2 does not have screw thread with nail, and described point 3 is the cone that side face is smooth, cut groove without row, minimum degree is reduced to the damage of Children and teenager metaphysis epiphyseal plate.Described head of a nail portion 1 is made into the revolution shape with the installing hole adaptation of locking steel plate, the side face in head of a nail portion 1 is manufactured with the locking screw thread 4 suitable with the installing hole female thread of locking steel plate 8, head of a nail portion 1 coordinates locking steel plate 8 to apply, usefulness can be fixed more stable to setting board of skeleton end fracture, screw lock is on steel plate, not easily move back nail or spread out of sclerotin, more not easily migration is in body.The end in head of a nail portion 1 has screw to screw connecting portion, and can be protruding, also can be shrinkage pool.
Further, described head of a nail portion 1 is made into Rotary-table, and Rotary-table narrows gradually from outer end to nail direction, bar portion 2.This shape is more conducive to advancing and fixing.
Further, it is the counterbore 5 coordinated with erecting tools made on the end face in head of a nail portion 1 that described screw screws connecting portion.
Further, described counterbore 5 is hexagonal counterbores suitable with die nut.
For improving bone surgery safety, ensure the life security of fracture fixation patient, this screw material is rustless steel or Titanium Alloy Design, and biocompatibility is good, in human body, foreign body reaction degree is low, and described head of a nail portion 1, nail bar portion 2 and point 3 are made by rustless steel or titanium alloy material.
As shown in Figure 3, A place signal fracture of the tibial plateau, humeral lateral condyle fracture is illustrated at B place, in figure, 6, epiphyseal plate, 7, this utility model lock screw, 8, locking steel plate, 9, plain screw, 10, fracture line.This utility model, when requiring screw to pass epiphyseal plate, can substitute conventional belt threaded screw, and head of a nail portion 1 is threaded with the installing hole of locking steel plate 8, fixation.Bar portion 2 does not have screw thread with nail, and point 3 is the cone that side face is smooth, cuts groove without row, is reduced to minimum degree to the damage of Children and teenager metaphysis epiphyseal plate.This utility model is specially adapted to child and teenager setting board of skeleton end fracture, can overcome the shortcoming of Kirschner wire and adult's locking steel plate screw, makes the fixing usefulness of children and youth extremity setting board of skeleton end fracture more definite and stable, reduces postoperative complication and sequela.
Claims (5)
1. a synthetism lock screw, it comprises nail bar portion (2), one end of nail bar portion (2) is point (3), the other end of nail bar portion (2) is head of a nail portion (1), it is characterized in that: described nail bar portion (2) is the smooth cylinder body of rod of side face, described point (3) is the smooth cone of side face, described head of a nail portion (1) is made into the revolution shape with the installing hole adaptation of locking steel plate, the side face in head of a nail portion (1) is manufactured with the locking screw thread (4) suitable with the installing hole female thread of locking steel plate, the end in head of a nail portion (1) has screw to screw connecting portion.
2. synthetism lock screw according to claim 1, is characterized in that: described head of a nail portion (1) is made into Rotary-table, and Rotary-table narrows gradually from outer end to nail bar portion (2) direction.
3. synthetism lock screw according to claim 1, is characterized in that: it is the counterbore (5) coordinated with erecting tools made on the end face of head of a nail portion (1) that described screw screws connecting portion.
4. synthetism lock screw according to claim 3, is characterized in that: described counterbore (5) is the hexagonal counterbore suitable with die nut.
5. synthetism lock screw according to claim 1, is characterized in that: described head of a nail portion (1), nail bar portion (2) and point (3) are made by rustless steel or titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755709.2U CN204971533U (en) | 2015-09-25 | 2015-09-25 | Coaptation locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755709.2U CN204971533U (en) | 2015-09-25 | 2015-09-25 | Coaptation locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204971533U true CN204971533U (en) | 2016-01-20 |
Family
ID=55105968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520755709.2U Expired - Fee Related CN204971533U (en) | 2015-09-25 | 2015-09-25 | Coaptation locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204971533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106963468A (en) * | 2017-04-18 | 2017-07-21 | 中国人民解放军总医院 | A kind of children's Injury of Epiphyseal Plate fixing device |
-
2015
- 2015-09-25 CN CN201520755709.2U patent/CN204971533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106963468A (en) * | 2017-04-18 | 2017-07-21 | 中国人民解放军总医院 | A kind of children's Injury of Epiphyseal Plate fixing device |
| CN106963468B (en) * | 2017-04-18 | 2023-08-29 | 中国人民解放军总医院 | Child epiphyseal plate damage fixing device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20170925 |