CN203873861U - Pedicle screw - Google Patents
Pedicle screw Download PDFInfo
- Publication number
- CN203873861U CN203873861U CN201420198079.9U CN201420198079U CN203873861U CN 203873861 U CN203873861 U CN 203873861U CN 201420198079 U CN201420198079 U CN 201420198079U CN 203873861 U CN203873861 U CN 203873861U
- Authority
- CN
- China
- Prior art keywords
- screw
- ailhead
- shank
- pedicle
- fixing head
- Prior art date
- 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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- Surgical Instruments (AREA)
Abstract
The utility model discloses a pedicle screw and relates to the field of medical tools. The pedicle screw comprises a fixing head (1), a screw rod (2), screw bodies and a screw head (6). The fixing head (1) is arranged at one end of the screw rod (2) and the screw head (6) is arranged at the other end of the screw rod (2). The screw head (6) and the screw rod (2) are connected through the screw bodies. The screw bodies are divided into the first screw body (3) and the second screw body (4). One end of the first screw body (3) is connected with the screw rod (2), the other end of the first screw body (3) is connected with one end of the second screw body (4), and the other end of the second screw body (4) is connected with the screw head (6). The pedicle screw is simple in structure, high in practicality, good in self-tapping performance, high in pulling resistance, convenient to operate in an operation, beneficial to the operation and capable of further relieving pain of a patient.
Description
[technical field]
This utility model relates to medical instrument field, especially relates to a kind of pedicle screw.
[background technology]
Known, in spinal trauma fracture operation, need to use pedicle screw, the effect of pedicle screw is exactly that patient's spinal column is coupled together, thereby play the fixing effect that recovers height, corrects form, but there are a lot of shortcomings in existing pedicle screw in actual operation, for example do not meet the physiological structure of spinal column, the activeness of vertebra after corrective surgery is reduced greatly; Also there is very large defect in the operation for pedicle screw in addition, easily loosening, is not easy to enter and extract, and increases the difficulty of operation, and therefore existing pedicle screw is difficult to meet patient and doctor's demand.
[summary of the invention]
In order to overcome the deficiency in background technology, the utility model discloses a kind of pedicle screw, this utility model is by adopting with the fixing head of semicylinder with the first screw and second screw of different pitch, and the fluting on pyramid type ailhead, with this, reach the object of being convenient to operation, alleviating patient's misery.
In order to realize described goal of the invention, this utility model adopts following technical scheme:
A kind of pedicle screw, comprise fixing head, shank of screw, screw and ailhead, one end at shank of screw is provided with fixing head, the other end of shank of screw is provided with ailhead, ailhead is connected by screw with shank of screw, and screw is divided into the first screw and the second screw, and one end of the first screw is connected with shank of screw, the other end of the first screw is connected with one end of the second screw, and the other end of the second screw is connected with ailhead.
Described fixing head, shank of screw, screw and ailhead are structure as a whole.
Described shank of screw is cylindrical structure.
Described fixing head is semicylinder structure.
The pitch of described the second screw is greater than the pitch of the first screw.
Described ailhead is pyramid type structure, is provided with fluting on ailhead, and fluting is arranged on the side of ailhead.
Owing to having adopted technique scheme, the utlity model has following beneficial effect:
A kind of pedicle screw described in the utility model, comprise handle, claw beam and binding clip, by adopting with the fixing head of semicylinder with the first screw and second screw of different pitch, and the fluting on pyramid type ailhead, with this, reach the object of being convenient to operation, alleviating patient's misery; A kind of pedicle screw described in the utility model, simple in structure and practical, not only there is good self tapping and anti-pull-out strength, and in operation convenient operation, be conducive to the carrying out of operation, further alleviated patient's pain.
[accompanying drawing explanation]
Fig. 1 is perspective view of the present utility model;
In figure: 1, fixing head; 2, shank of screw; 3, the first screw; 4, the second screw; 5, fluting; 6, ailhead.
[specific embodiment]
Explanation this utility model that can be detailed by the following examples, open the purpose of this utility model is intended to protect all technological improvements within the scope of this utility model.
A kind of pedicle screw described in 1 by reference to the accompanying drawings, comprise fixing head 1, shank of screw 2, screw and ailhead 6, in one end of shank of screw 2, be provided with fixing head 1, the other end of shank of screw 2 is provided with ailhead 6, ailhead 6 is connected by screw with shank of screw 2, and one end that screw is divided into the first screw 3 and the second screw 4, the first screws 3 is connected with shank of screw 2, the other end of the first screw 3 is connected with one end of the second screw 4, and the other end of the second screw 4 is connected with ailhead 6; Described fixing head 1, shank of screw 2, screw and ailhead 6 are structure as a whole; Described shank of screw 2 is cylindrical structure; Described fixing head 1 is semicylinder structure; The pitch of described the second screw 4 is greater than the pitch of the first screw 3; Described ailhead 6 is pyramid type structure, is provided with fluting 5 on ailhead 6, and fluting 5 is arranged on the side of ailhead 6.
Implement a kind of pedicle screw described in the utility model, first select in use suitable pedicle screw and locking system, by utilizing locking system to utilize fixing head 1 screw to be inserted to patient's vertebra, the fluting 5 of conical ailhead 6 and side thereof makes pedicle screw have stronger self tapping, facilitated inserting of pedicle screw, and the first screw 3 and the second screw 4 have different pitch, therefore having stronger resistance to plucking goes out performance, adding the fixing head 1 of semicylinder structure, make pedicle screw convenient when operation, alleviated greatly patient suffering.
This utility model does not describe part in detail for prior art.
Claims (6)
1. a pedicle screw, comprise fixing head (1), shank of screw (2), screw and ailhead (6), it is characterized in that: in one end of shank of screw (2), be provided with fixing head (1), the other end of shank of screw (2) is provided with ailhead (6), ailhead (6) is connected by screw with shank of screw (2), screw is divided into the first screw (3) and the second screw (4), one end of the first screw (3) is connected with shank of screw (2), the other end of the first screw (3) is connected with one end of the second screw (4), the other end of the second screw (4) is connected with ailhead (6).
2. a kind of pedicle screw according to claim 1, is characterized in that: described fixing head (1), shank of screw (2), screw and ailhead (6) are structure as a whole.
3. a kind of pedicle screw according to claim 2, is characterized in that: described shank of screw (2) is cylindrical structure.
4. a kind of pedicle screw according to claim 1, is characterized in that: described fixing head (1) is semicylinder structure.
5. a kind of pedicle screw according to claim 1, is characterized in that: the pitch of described the second screw (4) is greater than the pitch of the first screw (3).
6. a kind of pedicle screw according to claim 1, is characterized in that: described ailhead (6) is pyramid type structure, is provided with fluting (5) on ailhead (6), and fluting (5) is arranged on the side of ailhead (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198079.9U CN203873861U (en) | 2014-04-23 | 2014-04-23 | Pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198079.9U CN203873861U (en) | 2014-04-23 | 2014-04-23 | Pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203873861U true CN203873861U (en) | 2014-10-15 |
Family
ID=51674421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198079.9U Expired - Fee Related CN203873861U (en) | 2014-04-23 | 2014-04-23 | Pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203873861U (en) |
-
2014
- 2014-04-23 CN CN201420198079.9U patent/CN203873861U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |