CN203369954U - Bone screw with conical structure - Google Patents
Bone screw with conical structure Download PDFInfo
- Publication number
- CN203369954U CN203369954U CN201320414800.9U CN201320414800U CN203369954U CN 203369954 U CN203369954 U CN 203369954U CN 201320414800 U CN201320414800 U CN 201320414800U CN 203369954 U CN203369954 U CN 203369954U
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- Prior art keywords
- screw
- bone
- conical structure
- bone screw
- conical
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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 - Lifetime
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Abstract
The utility mode belongs to the field of medical instruments, and particularly discloses a bone screw with a conical structure. The bone screw with the conical structure is characterized in that internal threads in a screw rod threaded section form a conical structure according to the characters of the connection of screws and bones, external threads form a cylindrical structure, a threaded starting section and a threaded ending position are conical, a self-tapping cutting edge is arranged at the front end of a screw rod to bring convenience to self-tapping of the screw rod threads, and internal holes are formed in the end portion of the head of the screw. When the bone screw with the conical structure is used, the screw can be firmly connected with the cortical bone and the cancellous bone, and the screw can be more firmly connected with the cancellous bone. According to the characteristics of the cortical bone and the cancellous bone of the human body, the bone screw with the conical structure guarantees fracture healing and ligament repairing, fracture can be healed soon, and severe operative complications and second operation are avoided. The bone screw with the conical structure has the advantages of being reasonable in structure, simple in operation, safe, good in postoperative recovery, easy to screw, easy to take, user-friendly and the like.
Description
Technical field
This utility model belongs to medical mechanical domain, specifically a kind of bone screw with pyramidal structure.
Background technology
Skeleton is comprised of cortical bone, spongy bone and bone marrow from outside to inside.The cortical bone characteristics: harder, Thickness Ratio is thinner; The spongy bone characteristics: more loose, Thickness Ratio is thicker.Fracture is one of clinical most commonly encountered diseases example, and common interior fixing conventional screw and the steel plate of usually adopting is used in conjunction with.Conventional screw is that a kind of screw thread internal-and external diameter is cylindrical screw at present, and this screw is connected the main screw that relies on and is connected with cortical bone and the effective of spongy bone with bone.Because of the skeleton compositing characteristic, once screw and cortical bone Joint failure easily cause that screw loosening even breaks away from steel plate, thereby affect nonunion, delayed union, malunion or second operation, this has a strong impact on patient's post-operative recovery and increases the patient suffering.In view of the limitation of conventional screw in clinical use, can consider screw is made to darker screw relative to spongy bone junction screw thread.
Summary of the invention
The purpose of this utility model is the deficiency for conventional screw, and a kind of bone screw with pyramidal structure that can fix and can effectively coordinate with other implants with cortical bone and spongy bone preferably is provided.
The technical solution adopted in the utility model is:
A kind of bone screw with pyramidal structure, it is characterized in that: the characteristics that are connected with skeleton according to screw, nail bar thread segment female thread forms taper, external screw thread forms cylindrical, screw initial thread section and ending place are conical, and nail bar front end is provided with the self tapping cutting edge, is convenient to follow closely bar screw thread self tapping, the head of screw end is provided with endoporus, as hexagon endoporus or Flos Mume endoporus.
When this utility model is used, can make screw firmly be connected with spongy bone with cortical bone, especially be connected more firm with spongy bone.
This utility model, according to the feature of human body cortical bone and spongy bone, to guarantee union of fracture and ligament repair, early recovers fracture, avoids serious postoperative complication and second operation.The utlity model has rational in infrastructurely, operation is simple, safety, and post-operative recovery is good, easily screws in, easily takes out the more humane characteristics such as design.
The accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the I section enlarged drawing of this utility model Fig. 1.
The specific embodiment
Embodiment as shown in Figure 1, 2, a kind of bone screw with pyramidal structure, it is characterized in that: nail bar 1 thread segment female thread 2 forms taper, external screw thread 3 forms cylindrical, screw initial thread section 4 and ending place 5 are conical, and nail bar 1 front end is provided with the self tapping cutting edge, is convenient to follow closely bar screw thread self tapping, the head of screw end is provided with endoporus 6, and endoporus is hexagon endoporus or Flos Mume endoporus.
Claims (4)
1. the bone screw with pyramidal structure is characterized in that: the characteristics that are connected with skeleton according to screw, and nail bar thread segment female thread forms taper, and external screw thread forms cylindrical.
2. the bone screw with pyramidal structure according to claim 1, it is characterized in that: screw initial thread section and ending place are conical.
3. the bone screw with pyramidal structure according to claim 1 and 2, is characterized in that: follow closely the bar front end and be provided with the self tapping cutting edge.
4. the bone screw with pyramidal structure according to claim 1 and 2, it is characterized in that: the head of screw end is provided with endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414800.9U CN203369954U (en) | 2013-07-10 | 2013-07-10 | Bone screw with conical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414800.9U CN203369954U (en) | 2013-07-10 | 2013-07-10 | Bone screw with conical structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203369954U true CN203369954U (en) | 2014-01-01 |
Family
ID=49832512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320414800.9U Expired - Lifetime CN203369954U (en) | 2013-07-10 | 2013-07-10 | Bone screw with conical structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203369954U (en) |
-
2013
- 2013-07-10 CN CN201320414800.9U patent/CN203369954U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: 321016 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: CANWELL MEDICAL Co.,Ltd. Address before: 321016 Zhejiang city in Jinhua Province, Xinhua Street No. 466 Patentee before: ZHEJIANG CANWELL MEDICAL Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |