CN209018914U - Absorbable locking bone screw - Google Patents
Absorbable locking bone screw Download PDFInfo
- Publication number
- CN209018914U CN209018914U CN201820014358.3U CN201820014358U CN209018914U CN 209018914 U CN209018914 U CN 209018914U CN 201820014358 U CN201820014358 U CN 201820014358U CN 209018914 U CN209018914 U CN 209018914U
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- CN
- China
- Prior art keywords
- screw
- head
- thread
- locking
- absorbable
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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 belongs to medical care product technical field, in particular to a kind of absorbable locking bone screw；A kind of its absorbable locking bone screw, including screw body, the screw body includes head of screw and spiral is equipped with multi-turn screw thread from bottom to top on threaded rod head of screw lower section and be fixedly connected with the head of screw, the threaded rod, and the screw pitch between adjacent two screw thread is equal.The utility model provides a kind of absorbable locking bone screw with new construction, and it is self-locking which uses self-locking thread that can carry out, and can voluntarily degrade after being implanted into human body；When use, screw body is screwed into bone plate, since the nominal diameter of self-locking thread on screw body and screw pitch are greater than the nominal diameter and screw pitch of each screw thread, self-locking thread can form paramnesia strand cable with the screw thread channel on absorbable bone plate, and then reach nail-plate locking effect；The apparatus structure is simple, easy to use.
Description
Technical field
The utility model belongs to medical care product technical field, in particular to a kind of absorbable locking bone screw.
Background technique
Bone screw is a kind of internal fixation device for treating fracture, bone nail be it is made of metal, mainly pure titanium,
Titanium alloy, cobalt-base alloys and stainless steel etc..Metal and alloy material have sufficiently large intensity and toughness, counter-bending and torque resistant
Ability is strong, belongs to bio-inert material, is a kind of mechanical sealed with synosteosis.But bone nail made of metal, one
It cannot voluntarily degrade, need to be taken out by second operation after denier implantation human body, increase the pain of patient and the burden of medical expense；
And existing bone screw not can be carried out self-locking, and fixed is insecure.
Utility model content
In order to solve the problems in the existing technology, the utility model provides a kind of new absorbable locking synthetism spiral shell
Nail, it is self-locking which uses self-locking thread that can carry out, and can voluntarily degrade after being implanted into human body.
The utility model specific technical solution is as follows:
The utility model provides a kind of absorbable locking bone screw, including screw body, and the screw body includes spiral shell
Ailhead and below the head of screw and the threaded rod that is fixedly connected with the head of screw, on the threaded rod from bottom to top
Spiral is equipped with multi-turn screw thread, and the screw pitch between adjacent two screw thread is equal, and the nominal diameter of each screw thread is equal；It is close
The described of described head of screw one end is threaded with self-locking thread, between the self-locking thread and the screw thread adjacent thereto away from
From the screw pitch being greater than between adjacent two screw thread, the nominal that the nominal diameter of the self-locking thread is greater than each screw thread is straight
Diameter, and it is less than the diameter of the head of screw；The material of the screw body is copolymer of poly lactic acid.
Further to improve, the head of screw is cylindrical body setting, and the upper surface of the head of screw is equipped with two and is vertically arranged
Transverse groove and longitudinal slot, the central axis of the transverse groove and the longitudinal slot crossover sites and the central axis weight of the head of screw
It closes, and the depth of the transverse groove and the depth of the longitudinal slot are less than the height of the head of screw；The transverse groove is described in
The central axis of longitudinal slot is symmetrical set, central axis symmetrical above and below setting of the longitudinal slot along the transverse groove.
Further to improve, the head of screw is cylindrical body setting, and is set on the side wall of the head of screw there are three groove,
The arc-shaped setting in the section of the groove, and each groove is arranged along the circumferencial direction equidistant interval of the head of screw.
Further to improve, the nominal diameter of the screw thread is 2.7-5.5mm.
Further to improve, the screw pitch between adjacent two screw thread is 1.5-1.9mm.
The beneficial effects of the utility model are as follows:
The utility model provides a kind of absorbable locking bone screw with new construction, the absorbable locking bone screw
It can be carried out self-locking, and can voluntarily degraded after being implanted into human body using self-locking thread；It is connect in use, screw body is screwed into
In bone plate, since the nominal diameter of self-locking thread on screw body and screw pitch are greater than the nominal diameter and screw pitch of each screw thread,
Self-locking thread can form paramnesia strand cable with the screw thread channel on absorbable bone plate, and then reach nail-plate locking effect；The device
Structure is simple, easy to use, suitable for being widely used to promote.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that embodiment 1 can absorb locking bone screw；
Fig. 2 is the bottom view that embodiment 1 can absorb locking bone screw；
Fig. 3 is the top view of 2 head of screw of embodiment；
Fig. 4 is the structural schematic diagram that embodiment 3 can absorb locking bone screw；
Fig. 5 is the top view of 3 head of screw of embodiment.
Specific embodiment
The utility model is described in further detail with following embodiment with reference to the accompanying drawing.
Embodiment 1
Referring to shown in Fig. 1, Fig. 2, a kind of absorbable locking bone screw provided by the utility model, including screw body 1,
The screw body 1 is including head of screw 11 and set on spiral shell head of screw 11 lower section and be fixedly connected with the head of screw 11
Rasp bar 12, spiral is equipped with multi-turn screw thread 13, the screw pitch phase between adjacent two screw thread 13 from bottom to top on the threaded rod 12
Deng, and the nominal diameter of each screw thread 13 is equal；The screw thread 13 close to described 11 one end of head of screw is connected with self-locking spiral shell
Line 14, the distance between the self-locking thread 14 and the screw thread 13 adjacent thereto are greater than the spiral shell between adjacent two screw thread 13
Away from the nominal diameter of the self-locking thread 14 is greater than the nominal diameter of each screw thread 13, and is less than the straight of the head of screw 11
Diameter；The material of the screw body 1 is copolymer of poly lactic acid.The size of attached drawing is to have carried out appropriate scaling in the utility model
's.
The nominal diameter of screw thread 13 described in the present embodiment is 2.7-5.5mm.
Screw pitch in the present embodiment between adjacent two screw thread 13 is 1.5-1.9mm.
The utility model provides a kind of absorbable locking bone screw with new construction, the absorbable locking bone screw
It can be carried out self-locking, and can voluntarily degraded after being implanted into human body using self-locking thread；It is connect in use, screw body is screwed into
In bone plate, since the nominal diameter of self-locking thread on screw body and screw pitch are greater than the nominal diameter and screw pitch of each screw thread,
Self-locking thread can form paramnesia strand cable with the screw thread channel on absorbable bone plate, and then reach nail-plate locking effect；The device
Structure is simple, easy to use, suitable for being widely used to promote.
The utility model can to reach universal lock between screw body and absorbable bone plate by self-locking thread,
I.e. no angle limitation；After locking between screw body and absorbable bone plate, head of screw can be wiped out, and reach and can absorb
The undercut mark of bone plate coincide；Since the material of screw body is copolymer of poly lactic acid, so that can after screw body implantation human body
It voluntarily degrades, alleviates the pain of patient and the burden of medical expense.
Embodiment 2
The absorbable locking bone screw that the utility model embodiment 2 provides is substantially the same manner as Example 1, unlike,
As shown in figure 3, head of screw 11 described in the present embodiment is cylindrical body setting, the upper surface of the head of screw 11 is equipped with two and vertically sets
The transverse groove 15 and longitudinal slot 16 set, the central axis and the head of screw of 16 crossover sites of the transverse groove 15 and the longitudinal slot
11 center overlapping of axles, and the depth of the transverse groove 15 and the depth of the longitudinal slot 16 are less than the height of the head of screw 11
Degree；The transverse groove 15 is symmetrical set along the central axis of the longitudinal slot 16, and the longitudinal slot 16 is along the transverse groove 15
Central axis setting symmetrical above and below.
Head of screw is arranged using cross recess in the utility model, facilitates and screw body is screwed into absorbable bone plate,
Since the contact area of cross recess and screwdriver is bigger, use is more stable, and is fixed with cross recess, accuracy ratio
It is higher.
Embodiment 3
The absorbable locking bone screw that the utility model embodiment 3 provides is substantially the same manner as Example 1, unlike,
As shown in Figure 4, Figure 5, head of screw 11 described in the present embodiment is cylindrical body setting, and the side wall of the head of screw 11 is equipped with three
A groove 17, the arc-shaped setting in section of the groove 17, and each groove 17 are along the circumferencial direction of the head of screw 11
Equidistant interval setting.
The groove that three sections are arc is arranged in the utility model on the side wall of head of screw, convenient for screwing screw body
Enter in absorbable bone plate, it is big using the screw body preload contact area of this kind of head of screw, very big pretightning force can be used, and
And there is bigger grip, the face of friction is more, can be stronger, it is not easy to loosen.
Embodiment 2 and embodiment 3 are two kinds of design schemes of head of screw, specifically using which kind of scheme according to the actual situation and
It is fixed.
The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, make any variation in its shape or structure, it is all that there is same as the present application or phase
Approximate technical solution, all falls within the protection scope of the utility model.
Claims (5)
1. a kind of absorbable locking bone screw, which is characterized in that including screw body (1), the screw body (1) includes spiral shell
Ailhead (11) and the threaded rod (12) for being set to the head of screw (11) lower section and being fixedly connected with the head of screw (11), it is described
Spiral is equipped with multi-turn screw thread (13) from bottom to top on threaded rod (12), and the screw pitch between adjacent two screw thread (13) is equal, and
The nominal diameter of each screw thread (13) is equal；The screw thread (13) close to the head of screw (11) one end is connected with self-locking spiral shell
Line (14), the distance between the self-locking thread (14) and the screw thread adjacent thereto (13) are greater than adjacent two screw thread (13)
Between screw pitch, the nominal diameter of the self-locking thread (14) is greater than the nominal diameter of each screw thread (13), and is less than described
The diameter of head of screw (11)；The material of the screw body (1) is copolymer of poly lactic acid.
2. absorbable locking bone screw as described in claim 1, which is characterized in that the head of screw (11) sets for cylindrical body
It sets, the upper surface of the head of screw (11) is equipped with two vertically disposed transverse grooves (15) and longitudinal slot (16), the transverse groove
, and the transverse groove (15) and the center overlapping of axles of the central axis of the longitudinal slot (16) crossover sites and the head of screw (11)
(15) depth of depth and the longitudinal slot (16) is less than the height of the head of screw (11)；The transverse groove (15) is along described
The central axis of longitudinal slot (16) is symmetrical set, and the longitudinal slot (16) is symmetrical above and below along the central axis of the transverse groove (15)
Setting.
3. absorbable locking bone screw as described in claim 1, which is characterized in that the head of screw (11) sets for cylindrical body
It sets, and is set on the side wall of the head of screw (11) there are three groove (17), the arc-shaped setting in section of the groove (17), and is each
The groove (17) is arranged along the circumferencial direction equidistant interval of the head of screw (11).
4. absorbable locking bone screw as described in claim 1, which is characterized in that the nominal diameter of the screw thread (13) is
2.7-5.5mm。
5. absorbable locking bone screw as described in claim 1, which is characterized in that between adjacent two screw thread (13)
Screw pitch is 1.5-1.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014358.3U CN209018914U (en) | 2018-01-04 | 2018-01-04 | Absorbable locking bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014358.3U CN209018914U (en) | 2018-01-04 | 2018-01-04 | Absorbable locking bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209018914U true CN209018914U (en) | 2019-06-25 |
Family
ID=66868622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820014358.3U Expired - Fee Related CN209018914U (en) | 2018-01-04 | 2018-01-04 | Absorbable locking bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209018914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111920551A (en) * | 2020-07-28 | 2020-11-13 | 北京市春立正达医疗器械股份有限公司 | Primary total ankle joint prosthesis |
| CN114366271A (en) * | 2021-11-22 | 2022-04-19 | 奚廷斐 | Bone screw suitable for biological magnesium alloy and preparation method thereof |
-
2018
- 2018-01-04 CN CN201820014358.3U patent/CN209018914U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111920551A (en) * | 2020-07-28 | 2020-11-13 | 北京市春立正达医疗器械股份有限公司 | Primary total ankle joint prosthesis |
| CN114366271A (en) * | 2021-11-22 | 2022-04-19 | 奚廷斐 | Bone screw suitable for biological magnesium alloy and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200909 Address after: 101149 No. 82 Xinhua South Road, Beijing, Tongzhou District Patentee after: BEIJING LUHE HOSPITAL, CAPITAL MEDICAL University Address before: 101149 No. 82 Xinhua South Road, Beijing, Tongzhou District Patentee before: Zhang Chunhui |
|
| 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: 20190625 Termination date: 20210104 |