CN2654045Y - Medical vertebral plate limiting scalper - Google Patents
Medical vertebral plate limiting scalper Download PDFInfo
- Publication number
- CN2654045Y CN2654045Y CN 200320112029 CN200320112029U CN2654045Y CN 2654045 Y CN2654045 Y CN 2654045Y CN 200320112029 CN200320112029 CN 200320112029 CN 200320112029 U CN200320112029 U CN 200320112029U CN 2654045 Y CN2654045 Y CN 2654045Y
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- CN
- China
- Prior art keywords
- knife
- osteotome
- vertebral plate
- blade
- restricted
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- Expired - Fee Related
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Abstract
The utility model discloses a medical vertebral lamina retaining bone knife and comprises a column shaped handle at the upper part, a tool shank at the middle part and a tool bit at the lower part. The included angle a between the rear head face of the tool bit and central line of the side of the bone knife is an acute angle; the two sides of the tool shank are provided with a shoulder part that sinks 6 to 12 mm inside along the direction of the width and a limit terrace that recesses half length along the direction of the thickness and which is arranged at the rear part of the tool bit. The utility model has a knife edge that inclines forward and whose upper part is provided with a shoulder part that is convenient to observe the situation of the knife and a limit terrace that is arranged at the rear part of the knife edge and which can limit the depth of the knife, which is convenient for the doctor to operate and can prevent injuries caused by over inserted bone knife. Beside, the utility model also has the advantages of simple structure and easy manufacture.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly relates to a kind of lumbar vertebral posterior spinous process and lamina contiguous block and gets the restricted osteotome of medical vertebral plate of planting the art special use.
Background technology
Laminectomy is a kind of traditional operation mode that is used for the treatment of diseases such as spinal stenosis.Need in the operation process patient's vertebral plate is cut off, to expose the tissue of intraspinal spinal cord, nerve root and pathological changes.Wherein lumbar vertebral posterior spinous process and lamina contiguous block gets that to plant art be a kind of new art formula for the treatment of disease in the lumbar vertebra pipe by the design people invention.The spinous process and lamina contiguous block that both sides sloped inwardly about 40 ° under this modus operandi need cut on patient's lumbar vertebra, and do not cut off ligament, return the iatrogenic spinal canal stenosis that can not cause when planting this contiguous block the reach because of contiguous block to cause when operation back like this, and the healing of vertebral plate is very fast.Adopting the best method that this art formula is interrupted vertebral plate is to adopt the osteotome knochenbruch, because it not only can make patient's bone loss few, and can reach anatomical reduction when resetting.Because traditional osteotome is straight knife, blade should be perpendicular with vertebral plate when cutting vertebral plate usually, so certain angle that osteotome need be tilted when the doctor adopts above-mentioned operation method to interrupt vertebral plate is knocked, adds the restriction of art open country, thereby not easy to operate; The degree of exerting oneself when knocking in addition can't be grasped, so the degree of depth of feed just is difficult to control, serious clinical consequences such as damage spinal dura mater and nerve root very easily occur.But have not yet to see any a kind of special-purpose osteotome that is fit to this new art formula.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of simple in structure, safe and reliable and restricted osteotome of medical vertebral plate of being convenient to operate.
In order to achieve the above object, the restricted osteotome of medical vertebral plate that provides of this utility model is made of superposed cylindrical handle, the blade one that is positioned at the handle of a knife at middle part and is positioned at the bottom; The angle α of the side centreline space of blade rear end face and osteotome is an acute angle; The both sides, lower end of handle of a knife be respectively equipped with one along its width inwardly the shoulder of recessed 6～12mm and one along its thickness direction inwardly recessed half and be positioned at the restriction platform of blade rearward end.
The angle α of the side centreline space of described blade rear end face and osteotome is 30 °.
Described blade width is 12mm, and length is respectively 6,7,8,9,10,11mm.
Described handle of a knife cross section is a rectangle, and its width narrower from top increases to the width of bottom broad gradually at the middle part, and its thickness then reduces gradually.
The restricted osteotome of medical vertebral plate that this utility model provides has the blade that turns forward, and blade top is formed with the shoulder of being convenient to observe feed situation in the art and is positioned at the blade rearward end and can limits the restriction platform of depth of cut, so not only be convenient to the doctor and operate, but also can avoid being driven into the damage that causes deeply because of osteotome.In addition, osteotome of the present utility model also has advantages such as simple in structure and easy to manufacture.
Description of drawings
Below in conjunction with the drawings and specific embodiments the restricted osteotome of medical vertebral plate of the present utility model is elaborated.
Fig. 1 is the restricted osteotome front view of medical vertebral plate of the present utility model.
Fig. 2 is the restricted osteotome side view of medical vertebral plate of the present utility model.
The specific embodiment
As depicted in figs. 1 and 2, the restricted osteotome of medical vertebral plate that provides of this utility model is made of superposed cylindrical handle 1, blade 3 one that are positioned at the handle of a knife 2 at middle part and are positioned at the bottom; The angle α of the side centreline space of blade 3 rear end faces and osteotome is an acute angle; The both sides, lower end of handle of a knife 2 be respectively equipped with one along its width inwardly the shoulder 4 of recessed 6～12mm and one along its thickness direction inwardly recessed half and be positioned at the restriction platform 5 of blade 3 rearward end.The angle α of the side centreline space of the rear end face of blade 3 and osteotome is 30 °.Blade 3 width are 12mm, and length is respectively 6,7,8,9,10,11mm, and promptly 6 kinds of cuttves are one group.Because according to statistical data show, people's vertebral plate thickness is usually between 5～9mm, but consider that the pathologic that may occur changes, thicken etc. as vertebral plate, therefore the length restriction zone of blade 3 should be between 5～11mm, and the Shi doctor that performs the operation so just can select the long osteotome of different swords according to patient's actual vertebral plate thickness.In addition, because the blade 3 of this osteotome turns forward 30 °, so when the doctor adopts lumbar vertebral posterior spinous process and lamina contiguous block to get to plant art to carry out knochenbruch, its need are placed on contiguous block both sides to be cut with blade 3, and handle of a knife 1 upper end of vertically knocking osteotome just can cut down the contiguous block that both sides tilt, and owing to the existence of restriction platform 5 makes blade 3 can not enter the canalis spinalis deep inside, thereby improved the safety of operation greatly.In addition, the shoulder 4 of blade 3 both sides setting can be convenient to the doctor observes feed in operation process situation.The cross section of handle of a knife 2 is a rectangle, and its width narrower from top increases to the width of bottom broad gradually at the middle part, and its thickness then reduces gradually.
Claims (4)
1, the restricted osteotome of a kind of medical vertebral plate is characterized in that: the restricted osteotome of described medical vertebral plate by superposed cylindrical handle (1), be positioned at the handle of a knife (2) at middle part and be positioned at blade (3) the one formation of bottom; The angle α of the rear end face of blade (3) and the side centreline space of osteotome is an acute angle; The both sides, lower end of handle of a knife (2) be respectively equipped with one along its width inwardly the shoulder (4) of recessed 6～12mm and one along its thickness direction inside recessed half and be positioned at the restriction platform (5) of blade (3) rearward end.
2, the restricted osteotome of medical vertebral plate according to claim 1 is characterized in that: the angle α of the rear end face of described blade (3) and the side centreline space of osteotome is 30 °.
3, the restricted osteotome of medical vertebral plate according to claim 1 is characterized in that: described blade (3) width is 12mm, and length is respectively 6,7,8,9,10,11mm.
4, the restricted osteotome of medical vertebral plate according to claim 1, it is characterized in that: the cross section of described handle of a knife (2) is a rectangle, and its width narrower from top increases to the width of bottom broad gradually at the middle part, and its thickness then reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320112029 CN2654045Y (en) | 2003-10-24 | 2003-10-24 | Medical vertebral plate limiting scalper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320112029 CN2654045Y (en) | 2003-10-24 | 2003-10-24 | Medical vertebral plate limiting scalper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2654045Y true CN2654045Y (en) | 2004-11-10 |
Family
ID=34344506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320112029 Expired - Fee Related CN2654045Y (en) | 2003-10-24 | 2003-10-24 | Medical vertebral plate limiting scalper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2654045Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100571644C (en) * | 2008-05-05 | 2009-12-23 | 张立 | The special-shaped incision osteotome of front end bifurcated |
-
2003
- 2003-10-24 CN CN 200320112029 patent/CN2654045Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100571644C (en) * | 2008-05-05 | 2009-12-23 | 张立 | The special-shaped incision osteotome of front end bifurcated |
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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 |