CN2734156Y - Self-threading piercer for placing vertebral arch pedicle nail - Google Patents
Self-threading piercer for placing vertebral arch pedicle nail Download PDFInfo
- Publication number
- CN2734156Y CN2734156Y CN 200420078618 CN200420078618U CN2734156Y CN 2734156 Y CN2734156 Y CN 2734156Y CN 200420078618 CN200420078618 CN 200420078618 CN 200420078618 U CN200420078618 U CN 200420078618U CN 2734156 Y CN2734156 Y CN 2734156Y
- Authority
- CN
- China
- Prior art keywords
- self
- threading
- vertebral arch
- piercer
- placing
- 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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Abstract
The utility model discloses a self-threading piercer for placing vertebral arch pedicle nail. The self-threading piercer for placing vertebral arch pedicle nail comprises a T-shaped handle (2) and a self-threading guide drill rod (1) positioned on the T-shaped handle (2). The front part of the self-threading guide drill rod (1) is a screw drill head. The anterior part of the screw drill head is a 45 DEG inclined plane while the rear part of the screw drill head is provided with a connector (3) connected to the handle. The utility model is applied to bone surgery. The self-threading piercer for placing vertebral arch pedicle nail is convenient to operate with simple structure. The self-threading piercer for placing vertebral arch pedicle nail can not only self thread by the screw drill head on the front part of the utility model, but also can automatically adjust the travel direction of the drill hole appropriately when the drilling direction and the vertebral arch pedicle axis direction have obvious deviation.
Description
Affiliated technical field
This utility model belongs to technical field of medical instruments, is a kind of bone surgery set.
Background technology
At present, in the operative process that pedicle nail is inserted, the instrument that routine is used for the pedicle of vertebral arch prebored hole is a triangular pyramid.Triangular pyramid does not have steering capability, and its boring direction is estimated decision by the patient fully, if the axis direction of boring direction and pedicle of vertebral arch has significantly difference, triangular pyramid will be worn out the pedicle of vertebral arch cortical bone, causes the prebored hole failure, influences appropriately inserting of pedicle nail.
Summary of the invention
The purpose of this utility model is the shortcoming that overcomes prior art, for pedicle nail implantation surgery operation provides a self-tapping type pedicle of vertebral arch borer with guide function.
The realization the technical solution of the utility model is: a kind of pedicle nail is inserted the self tapping drilling director, by T-handle, the self tapping guide rod of device on T-handle formed, and self tapping guide rod front portion is the screw thread drill bit, its leading section is 45 degree inclined planes, and rearward end has the union joint that is connected with handle.
This utility model apparatus has following characteristics:
1, simple in structure, operating aspect;
2, boring onward impulse part need not the thrust of complete armrest from the self tapping forward thrust of drilling rod front threads bar, and promptly it has self tapping.
3, if the direction that pierces when beginning to hole has tangible deviation with the pedicle of vertebral arch axis direction, the near tangent line position conflict pedicle of vertebral arch cortical bone of the front end of borer in piercing process, under the situation of not wearing out cortical bone, tangent line position along cortical bone slips over, and the appropriate automatically direction of advance of adjusting borer, make the axis direction of itself and pedicle of vertebral arch more approaching, promptly it has guidance quality.
4, because of it has self tapping and guidance quality, so can reduce infringement, improve the success rate of prebored hole to pedicle of vertebral arch, correctly guide inserting of pedicle nail.
Description of drawings
Accompanying drawing is a structural representation of the present utility model
Among the figure: 1, self tapping guide rod, 2, T-handle, 3, union joint, L
1The drilling rod total length, L
2Be threaded bore head length degree.
The specific embodiment
Be described in further detail this utility model below in conjunction with drawings and Examples:
With reference to Fig. 1, this utility model is made up of T-handle (2) and self tapping guide rod (1), and is fixedly connected by union joint (3) between the two.Self tapping guide rod front portion is the screw thread drill bit, and front end is 45 degree inclined planes.Self tapping guide rod (1) selects for use alloy material to make.The drilling rod total length L
1Be 8-10cm, screw thread drill bit total length L
2Be 3-5cm; Drill pipe diameter 3.2mm.
Concrete using method
Behind definite pedicle nail entry point, pre-cortical bone opening is screwed into self tapping drilling director clockwise direction in opening part along the pedicle of vertebral arch axis direction.If borer runs into tangible resistance and can not advance in piercing process, illustrate and initially pierce direction to depart from the axis of pedicle of vertebral arch more obvious, the front end of the borer pedicle of vertebral arch cortical bone of having conflicted, and the conflict force direction is bigger with the tangent line potential difference of the some cortical bone of conflicting, the tangent line position that the front end of borer can not prolong cortical bone slips over, at this moment, should return borer, initially pierce direction from new adjustment.
Claims (2)
1, a kind of pedicle nail is inserted the self tapping drilling director, it is characterized in that by T-handle (2), the self tapping guide rod (1) of device on T-handle (2) formed, self tapping guide rod (1) front portion is the screw thread drill bit, its leading section is 45 degree inclined planes, and rearward end has the union joint (3) that is connected with handle.
2, a kind of pedicle nail according to claim 1 is inserted the self tapping drilling director, it is characterized in that the length L of the forward screw thread drill bit of self tapping guide rod (1)
2Be 3-5cm, the drilling rod total length L
1Be 8-10cm; Drill pipe diameter 3.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078618 CN2734156Y (en) | 2004-08-10 | 2004-08-10 | Self-threading piercer for placing vertebral arch pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078618 CN2734156Y (en) | 2004-08-10 | 2004-08-10 | Self-threading piercer for placing vertebral arch pedicle nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734156Y true CN2734156Y (en) | 2005-10-19 |
Family
ID=35264039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420078618 Expired - Fee Related CN2734156Y (en) | 2004-08-10 | 2004-08-10 | Self-threading piercer for placing vertebral arch pedicle nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734156Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999920A (en) * | 2010-12-23 | 2011-04-06 | 中国人民解放军第二军医大学 | Navigation-type borer |
-
2004
- 2004-08-10 CN CN 200420078618 patent/CN2734156Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999920A (en) * | 2010-12-23 | 2011-04-06 | 中国人民解放军第二军医大学 | Navigation-type borer |
| CN101999920B (en) * | 2010-12-23 | 2012-08-29 | 中国人民解放军第二军医大学 | Navigation-type borer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |