CN204260822U - Hollow compression pin structure - Google Patents
Hollow compression pin structure Download PDFInfo
- Publication number
- CN204260822U CN204260822U CN201420676520.XU CN201420676520U CN204260822U CN 204260822 U CN204260822 U CN 204260822U CN 201420676520 U CN201420676520 U CN 201420676520U CN 204260822 U CN204260822 U CN 204260822U
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- CN
- China
- Prior art keywords
- screw
- hollow
- head
- hollow compression
- pin structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
This utility model provides a kind of hollow compression pin structure, can prevent head of screw from exposing, effectively prevent the soft tissue of head of screw to diaphysis and cause interference, particularly use screw at articular surface, avoid when joint motion, head of screw causes articular surface and clashes into or produce interference to surrounding soft tissue, it comprises hollow compression rivet nut, through hole is provided with in described pressurizing hollow screw, it is characterized in that: described pressurizing hollow screw external week is full thread structure, in described hollow compression rivet nut, be provided with screw head.
Description
Technical field
This utility model relates to the technical field of clinical medicine operating theater instruments decided at the higher level but not officially announced, is specifically related to a kind of hollow compression pin structure.
Background technology
In clinical medicine, in medical treatment fracture or carry out merging, bone-culting operation time, usually screw will be adopted to be fixed hone lamella, and when adopting guide pin in screw, screw will make hollow-core construction, existing hollow nail is due to the head of screw for tightening screw, after screw is fixed hone lamella, be exposed at outside head of screw outside hone lamella, head of screw can cause interference to the soft tissue of diaphysis, particularly articular surface uses screw, when joint motion, can cause clash into or produce interference to surrounding soft tissue articular surface.
Summary of the invention
For the problems referred to above, this utility model provides a kind of hollow compression pin structure, can prevent head of screw from exposing, effectively prevent the soft tissue of head of screw to diaphysis and cause interference, particularly use screw at articular surface, avoid when joint motion, head of screw causes articular surface and clashes into or produce interference to surrounding soft tissue.
Its technical scheme is such: a kind of hollow compression pin structure, it comprises hollow compression rivet nut, be provided with through hole in described pressurizing hollow screw, it is characterized in that: described pressurizing hollow screw external week is full thread structure, in described hollow compression rivet nut, be provided with screw head.
It is further characterized in that: described screw head is interior hexagonal structure; Described hollow compression rivet nut is tapered; Described pressurizing hollow screw extracorporeal thread is gradient pitch structure, and screw tip is wide screw thread; Described screw tip is provided with cutting edge.
In said structure of the present utility model, pressurizing hollow screw external week is full thread structure, screw head is provided with in hollow compression rivet nut, screw is undertaken tightening, relaxing by the screw head of hollow compression rivet nut inside, because pressurizing hollow screw external week is full thread structure, avoid to be exposed at outside head of screw and effectively prevent the soft tissue of head of screw to diaphysis outside hone lamella and cause interference, particularly use screw at articular surface, when joint motion, avoid head of screw and shock is caused to articular surface or interference is produced to surrounding soft tissue.
Accompanying drawing explanation
Fig. 1 is this utility model hollow compression pin structure sectional view;
Fig. 2 is this utility model pressurizing hollow screw head construction.
Detailed description of the invention
See Fig. 1, a kind of hollow compression pin structure, it comprises hollow compression rivet nut 1, through hole 2 is provided with in pressurizing hollow screw 1, hollow compression rivet nut 1 periphery is full thread structure, screw head 3 is provided with in hollow compression rivet nut 1, because pressurizing hollow screw external week is full thread structure, avoid to be exposed at outside head of screw and effectively prevent the soft tissue of head of screw to diaphysis outside hone lamella and cause interference, particularly use screw at articular surface, when joint motion, avoid head of screw and shock is caused to articular surface or interference is produced to surrounding soft tissue.
Screw head 3 is interior hexagonal structure, ensure that the versatility that screw operates.
Hollow compression rivet nut 1 is tapered, produces pressure during screw placement to bone plate holes both sides, ensure that hone lamella is installed stable, prevents coming off of hone lamella.
Hollow compression rivet nut 1 external screw thread is gradient pitch structure, and screw tip 4 is wide screw thread, making the wide screw thread design of spike make screw front end when being screwed into enter than rear end faster, therefore producing pressurization to sclerite, more utilizing the combination of sclerite.
See Fig. 2, screw tip 4 is provided with cutting edge 5, screw placement of being more convenient for.
This utility model be medical treatment fracture or carry out merging, bone-culting operation provide a kind of simple, accurately, solution reliably, make Minimally Invasive Surgery become possibility.
Claims (5)
1. a hollow compression pin structure, it comprises hollow compression rivet nut, is provided with through hole, it is characterized in that in described pressurizing hollow screw: described pressurizing hollow screw external week is full thread structure, is provided with screw head in described hollow compression rivet nut.
2. a kind of hollow compression pin structure according to claim 1, is characterized in that: described screw head is interior hexagonal structure.
3. a kind of hollow compression pin structure according to claim 1, is characterized in that: described hollow compression rivet nut is tapered.
4. a kind of hollow compression pin structure according to claim 1, it is characterized in that: described pressurizing hollow screw extracorporeal thread is gradient pitch structure, screw tip is wide screw thread.
5., according to the arbitrary described a kind of hollow compression pin structure of claim 1-4, it is characterized in that: screw tip is provided with cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676520.XU CN204260822U (en) | 2014-11-13 | 2014-11-13 | Hollow compression pin structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676520.XU CN204260822U (en) | 2014-11-13 | 2014-11-13 | Hollow compression pin structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204260822U true CN204260822U (en) | 2015-04-15 |
Family
ID=52795728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420676520.XU Active CN204260822U (en) | 2014-11-13 | 2014-11-13 | Hollow compression pin structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204260822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640639A (en) * | 2014-11-13 | 2016-06-08 | 无锡市闻泰百得医疗器械有限公司 | Cannulated compression screw structure |
-
2014
- 2014-11-13 CN CN201420676520.XU patent/CN204260822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640639A (en) * | 2014-11-13 | 2016-06-08 | 无锡市闻泰百得医疗器械有限公司 | Cannulated compression screw structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |