CN103126758A - Left-handed flank angle screw - Google Patents
Left-handed flank angle screw Download PDFInfo
- Publication number
- CN103126758A CN103126758A CN 201110379112 CN201110379112A CN103126758A CN 103126758 A CN103126758 A CN 103126758A CN 201110379112 CN201110379112 CN 201110379112 CN 201110379112 A CN201110379112 A CN 201110379112A CN 103126758 A CN103126758 A CN 103126758A
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- screw
- side angle
- handed
- tooth side
- angle
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Abstract
The invention discloses a left-handed flank angle screw, and relates to the field of medical equipment. The left-handed flank angle screw comprises a screw body (1), a left-handed side angle (A) and a right-handed side angle (B), wherein the left-handed side angle (A) is arranged on one side of a thread of the screw body (1), and the right-handed side angle (B) is arranged on the other side of the thread of the screw body (1); and the left-handed side angle (A) is in an inward type. The left-handed flank angle screw has the following process route: barstock, longitudinal cutting processing center, numerical control turning, numerical control milling, polishing, cleaning, laser marking, fine cleaning, packing and warehouse entering. According to the left-handed flank angle screw, the connection and the fastening force of a thread can be effectively improved.
Description
Technical field:
The present invention relates to medical instruments field, relate in particular to a kind of negative tooth side angle screw.
Background technology:
In medical device product, trip bolt used is mainly that fracture patient is carried out interior fixing, and it is skeletal fixation device commonly used in bone surgery.the thread forms of Medical orthopedic screw generally has dividing of standard thread and odd-pitch screw at present, determine to select different thread forms according to the project organization of product, in the orthopaedics implant field, that uses the helicitic texture form has spine pedicle screws and the nut that matches with it and a steel plate screw, thread forms also has standard and non-standard dividing, but its ultimate principle and effect are fastening and interconnect function, now no matter be home or overseas producer, what adopt is all these several thread forms, the problem that faces clinically is the loosening or fastening of screw, existing Medical screw connects insecure, easily get loose.
Summary of the invention:
The purpose of this invention is to provide a kind of negative tooth side angle screw, it can effectively promote connection and the fastening force of screw thread.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: it comprises screw body 1, and it also comprises negative tooth side angle A and positive tooth side angle B, and screw thread one side of screw thread body 1 is negative tooth side angle A, and the screw thread opposite side is positive tooth side angle B.
Described negative tooth side angle A is internal fastening type.
Process route of the present invention is: bar → rip cutting machining center → numerical control lathe → numerical control mill → polishing → cleaning → laser marking → fine purifiation → packing → warehouse-in.
Tooth form of the present invention adopts a side tooth side angle for just, and opposite side tooth side angle is for negative, and its negative tooth side angle Partial angle is inside button, and thread forms is screw and pedicle nail and other the fixing for orthopedic implant that be threaded of negative tooth side angle.
The present invention can effectively promote connection and the fastening force of screw thread.
Description of drawings:
Fig. 1 is structural representation of the present invention.
The specific embodiment:
With reference to Fig. 1, this specific embodiment by the following technical solutions: it comprises screw body 1, and it also comprises negative tooth side angle A and positive tooth side angle B, and screw thread one side of screw thread body 1 is negative tooth side angle A, and the screw thread opposite side is positive tooth side angle B.
Described negative tooth side angle A is internal fastening type.
The process route of this specific embodiment is: bar → rip cutting machining center → numerical control lathe → numerical control mill → polishing → cleaning → laser marking → fine purifiation → packing → warehouse-in.
The tooth form of this specific embodiment adopts a side tooth side angle for just, and opposite side tooth side angle is for negative, and its negative tooth side angle Partial angle is inside button, and thread forms is screw and pedicle nail and other the fixing for orthopedic implant that be threaded of negative tooth side angle.
This specific embodiment can effectively promote connection and the fastening force of screw thread.
Claims (2)
1. bear tooth side angle screw, it comprises screw body (1), it is characterized in that it also comprises negative tooth side angle (A) and positive tooth side angle (B), screw thread one side of screw thread body (1) is negative tooth side angle (A), and the screw thread opposite side is positive tooth side angle (B); Described negative tooth side angle (A) is internal fastening type.
2. negative tooth side angle screw according to claim 1, is characterized in that its process route is: bar → rip cutting machining center → numerical control lathe → numerical control mill → polishing → cleaning → laser marking → fine purifiation → packing → warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379112 CN103126758A (en) | 2011-11-25 | 2011-11-25 | Left-handed flank angle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379112 CN103126758A (en) | 2011-11-25 | 2011-11-25 | Left-handed flank angle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103126758A true CN103126758A (en) | 2013-06-05 |
Family
ID=48487654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110379112 Pending CN103126758A (en) | 2011-11-25 | 2011-11-25 | Left-handed flank angle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103126758A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515476A (en) * | 2020-05-14 | 2020-08-11 | 北京市富乐科技开发有限公司 | Processing control method and device for titanium alloy screw |
| WO2020224657A1 (en) * | 2019-05-09 | 2020-11-12 | The University Of Hong Kong | A novel thread design for bone screw |
| EP3806764A4 (en) * | 2018-06-14 | 2022-03-09 | Versitech Limited | Bone implant device |
| CN117297738A (en) * | 2023-09-08 | 2023-12-29 | 天津正天医疗器械有限公司 | Magnesium-based screw with partial threads |
-
2011
- 2011-11-25 CN CN 201110379112 patent/CN103126758A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3806764A4 (en) * | 2018-06-14 | 2022-03-09 | Versitech Limited | Bone implant device |
| WO2020224657A1 (en) * | 2019-05-09 | 2020-11-12 | The University Of Hong Kong | A novel thread design for bone screw |
| CN113873958A (en) * | 2019-05-09 | 2021-12-31 | 香港大学 | Novel thread design for bone screws |
| US11596459B2 (en) | 2019-05-09 | 2023-03-07 | The University Of Hong Kong | Thread design for bone screw |
| CN111515476A (en) * | 2020-05-14 | 2020-08-11 | 北京市富乐科技开发有限公司 | Processing control method and device for titanium alloy screw |
| CN111515476B (en) * | 2020-05-14 | 2022-03-11 | 北京市富乐科技开发有限公司 | Processing control method and device for titanium alloy screw |
| CN117297738A (en) * | 2023-09-08 | 2023-12-29 | 天津正天医疗器械有限公司 | Magnesium-based screw with partial threads |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |