CN201073336Y - Self-tapping taking-out type femur neck hollow nail - Google Patents
Self-tapping taking-out type femur neck hollow nail Download PDFInfo
- Publication number
- CN201073336Y CN201073336Y CNU2007200856898U CN200720085689U CN201073336Y CN 201073336 Y CN201073336 Y CN 201073336Y CN U2007200856898 U CNU2007200856898 U CN U2007200856898U CN 200720085689 U CN200720085689 U CN 200720085689U CN 201073336 Y CN201073336 Y CN 201073336Y
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- China
- Prior art keywords
- tapping
- self
- vagina
- luo
- stricture
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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.)
- Expired - Fee Related
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Abstract
The utility model discloses a removable self-tapping femoral neck hollow nail used for orthopedics femoral neck operative treatment, which comprises a front end self-tapping type thread (2) arranged at the front part and a screw (1) arranged at the rear part; wherein, the longitudinal central axis is empty; the tail part of the screw (1) is provided with an inner hexagonal interface (3); the tail part of the front end self-tapping type thread (2) is provided with a reversed self-tapping thread (4) opposite to the self-tapping direction of the front end self-tapping type thread (2). Bone substance can be drilled out when the nail is taken out, thereby having the role of trailbreaker and facilitating taking out the empty nail. The utility model has the advantages of not hampering the pressurizing upon the fracture and removing the injury of nail removing upon the fracture healing part.
Description
Technical field
This utility model relates to medical apparatus and instruments, and particularly the Orthopeadic Surgery apparatus relates in particular to the hollow screw of orthopaedic femoral neck operation.
Background technology
At present the used hollow pressurization screw of orthopaedic femoral fracture of cervical vertebra is generally with AO (international internal fixation EASD) standard design, its front portion is a front end self-tapping type Luo stricture of vagina 2, the rear portion is slick Luo bar 1, the vertical axis position of whole pressurization screw is the hollow-core construction of top and bottom break-through, and afterbody has interior hexagonal interface 3.During use, when constantly being twisted fracture, it can pressurize to fracture.But the problem that exists is after union of fracture, because the screw afterbody lacks the effect of self tapping, causes screw to take out difficulty.
The utility model content
General hollow nail take-off time is longer after fracture of femoral neck patient's union of fracture, about about two-and-a-half years.Bone tissue growth is firm in following closely this moment, and conventional AO screw afterbody lacks the self tapping effect again, and screw takes out usually very difficult.
Task of the present utility model provides a kind of self tapping and takes out formula neck of femur hollow nail.
The realization the technical solution of the utility model is:
This self tapping that this utility model provides takes out formula neck of femur hollow nail, it is afterbody at the front end self-tapping type Luo of the hollow pressurization screw of tradition stricture of vagina 2, increase and the opposite reverse self tapping Luo stricture of vagina 4 of front end self-tapping type Luo stricture of vagina self tapping direction, promptly increase and get nail self tapping Luo stricture of vagina, can bore the matter that opens seam when getting screw, play the effect of " pioneer ", help hollow nail and take out, when not hindering simultaneously treatment yet to the pressurization of fracture.According to the size of treatment skeleton, this self tapping takes out formula neck of femur hollow nail can be processed into 8 to 10 centimeter length.
This self tapping that this utility model provides takes out formula neck of femur hollow nail, can bore the matter that opens seam when getting screw, play the effect of " pioneer ", help hollow nail and take out, to the pressurization of fracture, can not eliminate and get the injury of nail operation when not hindering simultaneously treatment yet union of fracture place.
Description of drawings
Fig. 1 is traditional hollow pressurization screw;
Fig. 2 is the hollow pressurization screw of the reverse self tapping Luo of band provided by the invention stricture of vagina;
Fig. 3 is the profile of the hollow pressurization screw of tail end band self tapping Luo stricture of vagina.
The name at the indication position that goes between that numeral connects is called among the figure:
1----Luo bar, the anterior self-tapping type Luo of 2----stricture of vagina, hexagonal interface in the 3---, the reverse self tapping Luo of 4---stricture of vagina
The specific embodiment
A kind of self tapping takes out formula neck of femur hollow nail, comprise and be positioned at forward front end self-tapping type Luo stricture of vagina 2, be positioned at the Luo bar 1 at rear portion, the vertical axis position that this self tapping takes out formula neck of femur hollow nail is the hollow-core construction of top and bottom break-through, the afterbody of Luo bar 1 has interior hexagonal interface 3, has and the opposite reverse self tapping Luo stricture of vagina 4 of front end self-tapping type Luo stricture of vagina self tapping direction at the afterbody of front end self-tapping type Luo stricture of vagina 2.
The opening of described reverse self tapping Luo stricture of vagina 4 is a cutting edge.
The height of described self tapping Luo stricture of vagina 4 is 0.4 centimetre, and Luo stricture of vagina back gauge is 1.5 millimeters, 2 millimeters of Luo stricture of vagina spacings.
Increase the long reverse self tapping Luo stricture of vagina 4 of one section 0.4CM at the hollow pressurization screw of tradition tail end, its opening is a cutting edge, plays the self tapping effect.Luo stricture of vagina back gauge 1.5MM, spacing 2MM, opening direction is opposite with front end Luo stricture of vagina.Can tapping follow closely the road during rotation cutting edge, be convenient to screw and take out.
Claims (3)
1. a self tapping takes out formula neck of femur hollow nail, comprise and be positioned at forward front end self-tapping type Luo stricture of vagina (2), be positioned at the Luo bar (1) at rear portion, the vertical axis position that this self tapping takes out formula neck of femur hollow nail is the hollow-core construction of top and bottom break-through, the afterbody of Luo bar (1) has interior hexagonal interface (3), it is characterized in that having and the opposite reverse self tapping Luo stricture of vagina (4) of front end self-tapping type Luo stricture of vagina self tapping direction at the afterbody of front end self-tapping type Luo stricture of vagina (2).
2. self tapping according to claim 1 takes out formula neck of femur hollow nail, it is characterized in that the opening of described reverse self tapping Luo stricture of vagina (4) is a cutting edge.
3. self tapping according to claim 1 and 2 takes out formula neck of femur hollow nail, it is characterized in that the height of described self tapping Luo stricture of vagina (4) is 0.4 centimetre, and Luo stricture of vagina back gauge is 1.5 millimeters, 2 millimeters of Luo stricture of vagina spacings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200856898U CN201073336Y (en) | 2007-07-04 | 2007-07-04 | Self-tapping taking-out type femur neck hollow nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200856898U CN201073336Y (en) | 2007-07-04 | 2007-07-04 | Self-tapping taking-out type femur neck hollow nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201073336Y true CN201073336Y (en) | 2008-06-18 |
Family
ID=39518598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200856898U Expired - Fee Related CN201073336Y (en) | 2007-07-04 | 2007-07-04 | Self-tapping taking-out type femur neck hollow nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201073336Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10555758B2 (en) | 2015-08-05 | 2020-02-11 | Woven Orthopedic Technologies, Llc | Tapping devices, systems and methods for use in bone tissue |
| US10588677B2 (en) | 2014-08-05 | 2020-03-17 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems and methods |
| US11395681B2 (en) | 2016-12-09 | 2022-07-26 | Woven Orthopedic Technologies, Llc | Retention devices, lattices and related systems and methods |
-
2007
- 2007-07-04 CN CNU2007200856898U patent/CN201073336Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10588677B2 (en) | 2014-08-05 | 2020-03-17 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems and methods |
| US11376051B2 (en) | 2014-08-05 | 2022-07-05 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems and methods |
| US10555758B2 (en) | 2015-08-05 | 2020-02-11 | Woven Orthopedic Technologies, Llc | Tapping devices, systems and methods for use in bone tissue |
| US11395681B2 (en) | 2016-12-09 | 2022-07-26 | Woven Orthopedic Technologies, Llc | Retention devices, lattices and related systems and methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 |