CN101703419A - Hollow guiding inward contraction pressurizing bone bolt - Google Patents
Hollow guiding inward contraction pressurizing bone bolt Download PDFInfo
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- CN101703419A CN101703419A CN200910128094A CN200910128094A CN101703419A CN 101703419 A CN101703419 A CN 101703419A CN 200910128094 A CN200910128094 A CN 200910128094A CN 200910128094 A CN200910128094 A CN 200910128094A CN 101703419 A CN101703419 A CN 101703419A
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- nail
- nut
- screw rod
- pin thread
- hollow
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Abstract
The invention relates to the technical field of medical appliance, in particular to an internal fixation appliance used for fixing fracture site in orthopedics department. A hollow guiding inward contraction pressurizing bone bolt is composed of a male thread screw pin and a female thread nut pin. The a male thread screw pin and the female thread nut pin are put in the bones of the human body guided by a kirschner wire, the contraction pressurizing action is realized by mutual displacement in the screwing process, after finishing operation, only two nuts are left on the surface of the bones, the condition that the screw of the traditional bolt exceeds the nut to form a protruding part can not appear in the process.
Description
Technical field
The present invention relates to technical field of medical instruments, specifically a kind of orthopaedics is used for fixing the internal fixation apparatus of fracture site.
Background technology
At present, bone bolt of using in the orthopaedics inside-fixture and our bolt daily and commercial Application are basic identical, form by screwed screw rod and nut, nut screws on screw rod and plays pressurization in the application process, occurs screw rod usually and exceed nut formation ledge in screwing pressure process.Need sterilization treatment because be used for the tissue fixed apparatus, and screw is fixed in, and afterwards exposed space is limited in the human body, screw rod exceeds the general sterilization of nut formation ledge application operating theater instruments and can't clip, the commercial Application instrument can't be used for operation because of needs sterilization treatment reason, cause screw rod outside skeleton, to form ledge in the soft tissue, stimulate local soft tissue to form cicatrix, cause the local pain discomfort, even influence limb function, bring misery and psychological burden to patient.
Summary of the invention
The objective of the invention is to overcome above deficiency, a kind of bone bolt that screw portion can be placed in fully in the skeleton is provided.
Technical scheme of the present invention is achieved in that hollow guiding inward contraction pressurizing bone bolt, is made up of pin thread screw rod nail and female threaded nut nail.It is characterized in that: pin thread screw rod nail and female threaded nut nail screw in the process and play the contraction pressurization by mutual displacement, only there are two nuts to stay after operation is finished, can not occur in this process exceeding nut formation ledge as the screw rod of conventional bolt in bone surface; Pin thread screw rod nail and female threaded nut nail are the hollow design with diameter, can conveniently finish to insert by Kirschner wire guiding that is complementary with it to screw the pressurization installation process, can obviously dwindle operative incision, reduce wound; Pin thread screw rod ailhead end is designed to not have the oriented module of screw thread minor diameter, is convenient to insert be partially submerged into rear thread with the threadless guide thimble of female threaded nut ailhead end in the installation process and dock; Female threaded nut ailhead end is designed to not have the large diameter guide thimble of screw thread, is convenient to insert be partially submerged into rear thread with the threadless oriented module of pin thread screw rod ailhead end in the installation process and dock; Pin thread screw rod nail and female threaded nut ailing tail nut partial design are sphere shape, can with the blade plate and the pad fit applications of present orthopaedics clinical practice; Pin thread screw rod nail and the tight motivation transfer motion part of female threaded nut ailing tailspin are designed to six stupefied shape screws, are complementary with hollow six stupefied spiral shell cuttves of present orthopaedics clinical practice, and be easy to use.
Advantage of the present invention is: hollow guiding inward contraction pressurizing bone bolt is applied to skeleton and screw rod as conventional bolt can occur and exceed nut and form outstanding part, can not cause the local pain discomfort, influence the limb function situation, alleviate patient's misery and psychological burden.Hollow guiding inward contraction pressurizing bone bolt is a hollow design, and is convenient, fast by Kirschner wire guiding installation and demolishing process, can obviously dwindle operative incision, reduces wound.Hollow guiding inward contraction pressurizing bone bolt can with the blade plate and the pad fit applications of present orthopaedics clinical practice.
Description of drawings
Fig. 1 is pin thread screw rod nail sketch map of the present invention
Fig. 2 is female threaded nut nail sketch map of the present invention
Fig. 3 screws sketch map for the present invention by the Kirschner wire guiding
The specific embodiment
Hollow guiding inward contraction pressurizing bone bolt is made up of pin thread screw rod nail (1) and female threaded nut nail (2), and pin thread screw rod nail (1) is hollow (3) design, and female threaded nut nail (2) is hollow (4) design, hollow (3) and hollow (4) equal diameters.The six stupefied shape screws (7) of pin thread screw rod nail (1) nut (5), the six stupefied shape screws (8) of female threaded nut nail (2) nut (6).Pin thread screw rod nail (1) design has oriented module (9), and female threaded nut nail (2) design has guide thimble (10).Pin thread screw rod nail (1) design has pin thread (11), and female threaded nut nail (2) design has and female thread (12), and pin thread (11) equates with female thread (12) pitch.
When hollow (3), hollow (4) corresponding with pin thread screw rod nail (1) and female threaded nut nail (2) are complementary after Kirschner wire (13) penetrates expectation and be screwed into the skeletal sites of bone bolt, use with pin thread screw rod nail (1) and be complementary hollow boring bit in Kirschner wire (13) guiding boring down, pin thread screw rod nail (1) is penetrated Kirschner wire (13) by hollow (3) therebetween, along Kirschner wire (13) guiding insertion skeleton; Offside is used with female threaded nut nail (2) and is complementary hollow boring bit in Kirschner wire (13) guiding boring down, female threaded nut nail (2) is penetrated Kirschner wire (13) by hollow (4) therebetween, along Kirschner wire (13) guiding insertion skeleton; At this moment the oriented module (9) of pin thread screw rod nail (1) embeds mutually with the guide thimble (10) of female threaded nut nail (2), and pin thread (11) contacts with female thread (12).The six stupefied spiral shell cuttves that will be complementary with the six stupefied shape screws (7) of pin thread screw rod nail (1) nut (5) insert six stupefied shape screws (7) along Kirschner wire (13) guiding, to follow closely the six stupefied spiral shell cuttves that the six stupefied shape screws (8) of (2) nut (6) are complementary with female threaded nut and insert six stupefied shape screws (8) along Kirschner wire (13) guiding, two 6 stupefied spiral shell cuttves are pressed the rightabout rotation, pin thread (11) tightens pressurization with female thread (12), sclerite resets, the nut (5) of pin thread screw rod nail (1) and female threaded nut nail (2) nut (6) are tight with the mutual embedding of cortex of skeleton both sides, finish fixingly, extract Kirschner wire (13).Can use the pad that is complementary with nut (5), nut (6) in the art increases the area of nut pressurization, reduces the occurrence probability that sinks into situations such as skeleton and skeleton splitting in the nut.
Operation taking-up process at first finds a square nut (5) or nut (6), to be complementary with hollow (3), hollow (4), to penetrate bolt hollow and pass to offside subcutaneous for Kirschner wire (13), another nut is found in Kirschner wire (13) guiding the other side's otch down, to insert along Kirschner wire (13) guiding with the six stupefied spiral shell cuttves that six stupefied shape screws (7), six stupefied shape screws (8) are complementary, two 6 stupefied spiral shell cuttves are pressed the rightabout rotation can convenient and swift taking-up pin thread screw rod nail (1) and female threaded nut nail (2).
Claims (4)
1. hollow guiding inward contraction pressurizing bone bolt is made up of pin thread screw rod nail (1) and female threaded nut nail (2), and pin thread screw rod nail (1) is hollow (3) design, and female threaded nut nail (2) is hollow (4) design, hollow (3) and hollow (4) equal diameters.
2. the pin thread screw rod is followed closely the six stupefied shape screws (7) of (1) nut (5), the six stupefied shape screws (8) of female threaded nut nail (2) nut (6).
3. pin thread screw rod nail (1) design has oriented module (9), and female threaded nut nail (2) design has guide thimble (10), bootable pin thread (11) with screw pressurization after female thread (12) contacts.
4. pin thread screw rod nail (1) design has pin thread (11), and female threaded nut nail (2) design has and female thread (12), and pin thread (11) equates with female thread (12) pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128094A CN101703419A (en) | 2009-03-16 | 2009-03-16 | Hollow guiding inward contraction pressurizing bone bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128094A CN101703419A (en) | 2009-03-16 | 2009-03-16 | Hollow guiding inward contraction pressurizing bone bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101703419A true CN101703419A (en) | 2010-05-12 |
Family
ID=42373719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910128094A Pending CN101703419A (en) | 2009-03-16 | 2009-03-16 | Hollow guiding inward contraction pressurizing bone bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101703419A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871721A (en) * | 2012-10-26 | 2013-01-16 | 王永红 | Sacrum female and male hollow pressurizing screw |
| TWI458461B (en) * | 2011-12-28 | 2014-11-01 | Ind Tech Res Inst | Implant module |
| CN111588456A (en) * | 2020-05-23 | 2020-08-28 | 徐州长风生物科技有限公司 | High-holding-force low-loss slow-release medical bone screw |
-
2009
- 2009-03-16 CN CN200910128094A patent/CN101703419A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI458461B (en) * | 2011-12-28 | 2014-11-01 | Ind Tech Res Inst | Implant module |
| CN102871721A (en) * | 2012-10-26 | 2013-01-16 | 王永红 | Sacrum female and male hollow pressurizing screw |
| CN111588456A (en) * | 2020-05-23 | 2020-08-28 | 徐州长风生物科技有限公司 | High-holding-force low-loss slow-release medical bone screw |
| CN111588456B (en) * | 2020-05-23 | 2022-03-25 | 余丹丹 | High-holding-force low-loss slow-release medical bone screw and punching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100512 |