CN208741107U - A kind of metal bone screw - Google Patents
A kind of metal bone screw Download PDFInfo
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- CN208741107U CN208741107U CN201721737158.2U CN201721737158U CN208741107U CN 208741107 U CN208741107 U CN 208741107U CN 201721737158 U CN201721737158 U CN 201721737158U CN 208741107 U CN208741107 U CN 208741107U
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- screw
- screw cap
- bone
- shank
- cap
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Abstract
The utility model discloses a kind of metal bone screws, including screw cap (1), escape (2) and shank of screw (3)；Wherein lock nut (1) is made of turn slot, upper screw cap (1-2) and lower screw cap (1-3)；Upper screw cap (1-2) is arc transition to screw cap (1) upper surface；Lower screw cap (1-3) is spherical shape, and spherical diameter size is adapted with the implantation material ball being used in combination.Shank of screw (3) has metric thread (3-1), intermediate position design to have cortex bone or cancellous threads (3-2) close to the design of withdrawing groove location.The utility model combines installation with corresponding bone plate or pitman, fixed block to complete to fracture, the reset of osteopathy, fixation, treatment；The screw and multiple fixed blocks are by pitman fix bone, and formed a whole stable framework in the form of gantry, to achieve the purpose that fracture, the reset of osteopathy, fixation, orthopedic and treatment.
Description
Technical field
The utility model relates to orthopedic medical device fields, are specifically related to a kind of metal bone screw.
Background technique
Currently, in the market there are two types of most commonly used metal bone screws: one is plain screw, head of a nail lower surface be for
Spherical shape, nail rod are cortex bone or cancellous threads, and another kind is the bone screw being used cooperatively with locking steel plate, head of a nail appearance
Face is designed as tapered screw thread, and nail rod is cortex bone or cancellous threads.The advantages of plain screw are as follows: it is flexible into nail angle, it can be with
It is selected according to operation actual conditions into nail angle；Disadvantage are as follows: 1. due into follow closely it is excessively flexible, cause operating difficulty big, to operation
Doctor requires high；2. screw and implantation material are sphere-contact, can not fixation, when after patient's operation by external force, screw
It is easy to loosen with implantation material, influences bone healing.Lock screw and locking bone fracture plate form stable integral frame structure, but hold
Easily there is stress shielding, influences bone healing.
The utility model combined with metal bone fracture plate or Related product installation come complete to fracture, the reset of osteopathy, fixation,
Treatment；More screws of the structure and bone fixation, but between more screws after bone fixation be it is independent, in the form of gantry
Stable frame form a whole to achieve the purpose that fracture, the reset of osteopathy, fixation, orthopedic and treatment.
Summary of the invention
To solve the problems, such as above-mentioned technology, the purpose of the utility model is to provide a kind of domed lower surfaces, metric system
The novel metal bone screw of multi start thread.Above-mentioned bone screw structure is simple, and design is reasonable, easy to operate, with corresponding synthetism
The frame structure of plate or Related product composition monolithic stability, has more preferable biomethanics and biological characteristics；And have a little:
1. keeping interior fixation more reliable, locks whole fixation and especially prove effective to osteoporosis patient and secondary interior fixed patient；2. passing through
Screw locking connection, can in fracture in agglutination with weight bearing and light axial slide, it is this with union different phase
The dynamics of generation changes, and stress shielding and stress can effectively be avoided to concentrate, and promotes broken ends of fractured bone sclerotin healing, and the axis of the system
It is to keep realizing in tight situation between bone and interior fixation to slide effect, unlike dynamic compression plate or interlocking marrow
Interior nail is just to generate sliding after loosening between plate and bone.3. the system constitutes bridge-type and fixes, not with plain bone plate/bone screw
Together, integrated stress disperses, and avoids stress concentration, improves the fatigue strength of structure, reduces implantation material failure risk.
A kind of metal bone screw described in the utility model, including screw cap, escape and shank of screw, three are integrated
It completes the process；The screw cap is made of turn slot, upper screw cap and lower screw cap, and three, which is integrated, to be completed the process；
The shank of screw has metric thread, intermediate position design to have cortex bone or cancellous threads, spiral shell close to the design of withdrawing groove location
Nail rod head is designed as pyramid type.
A kind of metal bone screw described in the utility model, the upper screw cap are arc transition to screw cap upper end
Face；Lower screw cap is spherical shape, and spherical diameter size is adapted with the implantation material ball being used in combination.
A kind of metal bone screw described in the utility model, the shank of screw metric thread are multi start thread, line number
It is 2 or 3；
The angle of a kind of metal bone screw described in the utility model, first conical surface of the screw club head is
20°-50°；The angle of second conical surface is 60 ° -90 °.
Detailed description of the invention
Fig. 1 is a kind of main view of metal bone screw of the utility model；
Fig. 2 is the top view of screw cap in a kind of metal bone screw of the utility model；
Fig. 3 is a kind of implementation result schematic diagram of metal bone screw of the utility model
Specific embodiment:
The utility model includes that screw cap (1), escape (2) and shank of screw (3), three are integrated processing as shown in Figure 1:
It completes；The screw cap (1) is made of turn slot (1-1), upper screw cap (1-2) and lower screw cap (1-3), San Zhewei
It is integrally machined completion；The shank of screw (3) has metric thread (3-1), intermediate position design to have close to the design of withdrawing groove location
Cortex bone or cancellous threads (3-2), screw club head (3-3) are designed as pyramid type.The upper screw cap (1-2) is circular arc
It is transitioned into screw cap (1) upper surface；Lower screw cap (1-3) is spherical shape, spherical diameter size and the implantation material being used in combination
Ball is adapted.The shank of screw metric thread (3-1) is multi start thread, and line number is 2 or 3；The screw club head (3-3)
First conical surface (3-3-1) angle be 20 ° -50 °；The angle of second conical surface (3-3-2) is 60 ° -90 °.
Fig. 3 is a kind of implementation result schematic diagram of Novel bone screw of the utility model
As shown in Figure 3, a kind of specific implementation method of metal bone screw of the utility model is (with pitman, fixed block
With the use of): two pitmans (5) penetrate the wearing in stick hole of multiple fixed blocks (4), are covered in the fracture site (7) of knochenbruch (6)
Above, the lower surface with bone upper surface of fixed block (4) fit closely, and pitman (5) is vacantly and bone surface；Bone screw
(8) it is inserted into the screw hole of fixed block (4), the domed lower surface (1-3) of bone screw (8) is matched with the spherical pore of fixed block
And compress two pitmans (5)；The metric thread (3-1) of bone screw is matched with fixed block (4) screw thread, make fixed block (4),
Pitman (5) and bone screw (8) form monolithic stability frame structure；Regular screw threads (3-2) are implanted in knochenbruch 6, to reach
To fracture, the reset of osteopathy, fixation, orthopedic and treatment purpose.The embodiment party of the metal bone screw and corresponding bone plate
Method is similar to the above.
Claims (2)
1. a kind of metal bone screw, it is characterised in that: including screw cap (1), escape (2) and shank of screw (3), three one
Body completes the process；The screw cap (1) is made of turn slot (1-1), upper screw cap (1-2) and lower screw cap (1-3),
Three, which is integrated, to be completed the process；The upper screw cap (1-2) is arc transition to screw cap (1) upper surface；Lower screw cap
(1-3) is spherical shape, and spherical diameter size is adapted with the implantation material ball being used in combination；The shank of screw (3) is close to move back
The design of cutter groove position has metric thread (3-1), intermediate position design to have cortex bone or cancellous threads (3-2), screw club head
(3-3) is designed as pyramid type；The shank of screw metric thread (3-1) is multi start thread, and line number is 2 or 3.
2. a kind of metal bone screw according to claim 1, it is characterised in that: the of the screw club head (3-3)
The angle of one conical surface (3-3-1) is 20 ° -50 °；The angle of second conical surface (3-3-2) is 60 ° -90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737158.2U CN208741107U (en) | 2017-12-13 | 2017-12-13 | A kind of metal bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737158.2U CN208741107U (en) | 2017-12-13 | 2017-12-13 | A kind of metal bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208741107U true CN208741107U (en) | 2019-04-16 |
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ID=66051798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721737158.2U Active CN208741107U (en) | 2017-12-13 | 2017-12-13 | A kind of metal bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208741107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110916782A (en) * | 2019-12-26 | 2020-03-27 | 天津市威曼生物材料有限公司 | Semi-closed fixing device |
| WO2021129548A1 (en) * | 2019-12-26 | 2021-07-01 | 天津市威曼生物材料有限公司 | Semi-closed fixing device and closed locking device |
-
2017
- 2017-12-13 CN CN201721737158.2U patent/CN208741107U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110916782A (en) * | 2019-12-26 | 2020-03-27 | 天津市威曼生物材料有限公司 | Semi-closed fixing device |
| WO2021129548A1 (en) * | 2019-12-26 | 2021-07-01 | 天津市威曼生物材料有限公司 | Semi-closed fixing device and closed locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Ming Inventor after: Duan Yonggang Inventor after: He Jingli Inventor after: Wang Haiping Inventor before: Wu Ming |