CN205667567U - A kind of arc vertebral body osteotome - Google Patents
A kind of arc vertebral body osteotome Download PDFInfo
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- CN205667567U CN205667567U CN201520786366.6U CN201520786366U CN205667567U CN 205667567 U CN205667567 U CN 205667567U CN 201520786366 U CN201520786366 U CN 201520786366U CN 205667567 U CN205667567 U CN 205667567U
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- arc
- osteotome
- blade
- vertebral body
- face
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Abstract
The utility model discloses a kind of arc vertebral body osteotome, including osteotome beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade；Osteotome beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade head and the tail successively are rigidly connected；Blade head end is provided with cutting edge and blade is protruding, cutting edge and the protruding front both facing to blade head end of blade；It is the part for annulus that the radial section of blade head end is set to face a, face a, if radius relatively small arc-shaped is arc x, if radius larger arc is arc y；In a of face: the top of blade bossing correspondence profile is arc, arc head and the tail two ends connect by lines L1 with L2 and arc x and arc y is corresponding respectively, and wherein, lines L2 constitutes the profile that cutting edge is corresponding.The design of this osteotome both can make blade walk around dural sac, cross over vertebral body sagittal plain median line, can reduce again dural sac damage and the risk of spinal cord stimulation.
Description
Technical field
This utility model relates to technical field of medical instruments, is particularly used for when thoracic vertebra and posterolateral lumbar spinal osteotomy are orthopedic
A kind of arc vertebral body osteotome used.
Background technology
It is generally used for thoracic vertebra, the patient of lumbar vertebra old fracture through thoracic vertebra or posterolateral lumbar spinal approach osteotomy orthopaedy, should
Art formula needs use osteotome excision rearward attachment and part vertebral body.At present conventional osteotome is to be positioned at outside after dural sac according to cutting
The vertebral plate of side, the demand of articular process and design, the bladed that osteotome head end is square more, be positioned on front side of dural sac for excision and
During vertebral body below nerve root, owing to working place is limited, if patient lacks experience, Spinal Cord, nerve root and dura mater in art
The risk of capsule is higher；In addition the straight configuration of osteotome is difficult to adjustment direction in narrow space, and the head end of osteotome often cannot reach
To the intended degree of depth and angle, and ultimately result in vertebral body osteotomy poor effect, and extend operating time, increase amount of bleeding.
Summary of the invention
The purpose of this utility model is to provide one and is applied to during thoracic vertebra and posterolateral lumbar spinal approach osteotomy, permissible
Protection dural sac and nerve root, and the arc osteotome of vertebral body osteotomy scope can be increased.This utility model is taked for reaching this purpose
Scheme as follows:
A kind of arc vertebral body osteotome, including osteotome beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade；Bone
Chisel beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade head and the tail successively are rigidly connected；
Blade head end is provided with cutting edge and blade is protruding, cutting edge and the protruding front both facing to blade head end of blade；
It is the part for annulus that the radial section of blade head end is set to face a, face a, if radius relatively small arc-shaped is arc x, if
Radius larger arc is arc y；In a of face: the top of blade bossing correspondence profile is arc, arc head and the tail two ends lead to respectively
Crossing the corresponding connection of lines L1 with L2 and arc x and arc y, wherein, lines L2 constitutes the profile that cutting edge is corresponding.
It is preferably: lines L1 overlaps with arc x.
As improvement: set the difference of radius of arc x and arc y as △ r, if the spacing between the head and the tail of lines L2 2 is d；△
The scope of r:d is 1～1.5, preferably the 1.25 of △ r:d.
As improvement: the scope of △ r is 3～8mm, and △ r is preferably 5mm.
As improvement: in a of face: the top of blade bossing correspondence profile be arc be semi arch, preferably radius 0.5mm
Semi arch.
As improvement: chisel grip body surfaces is carved with net form groove；Connecting rod is the round platform being gradually reduced to first diameter by tail；
Axis and the arc x of connecting rod are tangent.
As preferably: the central angle alpha of arc x is 45 °.
Compared with prior art, the design of this osteotome both can make blade walk around dural sac, cross over vertebral body sagittal plain median line,
Dural sac damage and the risk of spinal cord stimulation can be reduced again.This arc vertebral body osteotome, reaches protection nerve and dural sac, is easy to art
Middle operation and minimizing operation wound purpose.
Accompanying drawing explanation
Fig. 1: osteotome schematic side view；
The close-up schematic view of part A (i.e. blade head end) in Fig. 2: Fig. 1；
Fig. 3: the schematic diagram of part shown in Fig. 2 in a of face；
The numbering at each position in above figure: 1, osteotome beating part；2, chisel grip main body；3, shank connecting portion；4, connecting rod；5、
Blade；6, cutting edge；7, blade is protruding.
Detailed description of the invention
With detailed description of the invention, the technical program is further described below below in conjunction with the accompanying drawings:
A kind of arc vertebral body osteotome, including osteotome beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade；Bone
Chisel beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade head and the tail successively are rigidly connected；Blade head end is provided with cutting edge
Protruding with blade, cutting edge and the protruding front both facing to blade head end of blade；The radial section of blade head end is set to face a, face a
It is the part for annulus, if radius relatively small arc-shaped is arc x, if radius larger arc is arc y；In a of face: blade bossing
The top of corresponding profile is arc, and arc head and the tail two ends connect by lines L1 with L2 and arc x and arc y is corresponding respectively, wherein, and line
Bar L2 constitutes the profile that cutting edge is corresponding..
In this example, lines L1 overlaps with arc x.
If the difference of the radius of arc x and arc y is △ r, if the spacing between the head and the tail of lines L2 2 is d；The scope of △ r:d
It is 1～1.5.In this example, preferably the 1.25 of △ r:d.
The scope of △ r is 3～8mm.In this example, △ r is preferably 5mm.
In a of face: the top of blade bossing correspondence profile be arc be semi arch.In this example, preferably radius 0.5mm's
Semi arch.
In this example, chisel grip body surfaces is carved with net form groove；Connecting rod is the round platform being gradually reduced to first diameter by tail.
In this example, the central angle alpha of arc x is 45 °.
Principle is described as follows:
Chisel grip main body is cylindrical structural, the frictional force when textured that surface is carved adds use and comfort；Bone
Chisel beating part is identical with the diameter of shank connecting portion, is slightly less than chisel grip main body, improves the efficiency of hammer stroke.
Connecting rod is the frustum cone structure that a cross section is directly gradually reduced via head end to tail end, and the diameter that head end is less reduces
Extruding dural sac, the risk of nerve root.
The both sides, cross section of the head end of blade are isocentric circular arc, and wherein the central angle alpha of small arc-shaped is 45 °, this decision design
Blade can be made along the natural curve of dural sac around to dural sac front, and cross over vertebral body sagittal median line, ensure fully excision
While vertebral body, reduce the risk of extruding spinal cord.
On the cross section of blade, axis and the arc x of connecting rod are tangent.
△ r is 5mm, and this decision design can reach and reduces apparatus to the extruding of spinal cord, the purpose that reduces spinal cord injury.
△ r is 5mm, and preferably 1.25 (i.e. spacing between lines L2 two ends is 4mm) of △ r:d, this design both made
Cutting edge be expert at Vertebrae resection time be located remotely from dural sac side, in turn ensure that the efficiency of resected bone.
In this example, blade be close to dural sac move forward time, the protruding semicircular structure of blade can by anterointernal firmly
Membrane vesicle is square, to inner side jack-up, the purpose play and protect dural sac, reducing spinal cord stimulation slightly up.
Claims (10)
1. an arc vertebral body osteotome, including osteotome beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade；Osteotome
Beating part, chisel grip main body, osteotome handle connecting portion, connecting rod and blade head and the tail successively are rigidly connected；
It is characterized in that being provided with cutting edge and blade at blade head end protruding, cutting edge and blade protruding both facing to blade head end before
Side；
It is the part for annulus that the radial section of blade head end is set to face a, face a, if radius relatively small arc-shaped is arc x, if radius
Larger arc is arc y；In a of face: the top of blade bossing correspondence profile is arc, line is passed through at arc head and the tail two ends respectively
Bar L1 with L2 and arc x and arc y is corresponding to be connected, and wherein, lines L2 constitutes the profile that cutting edge is corresponding.
Arc vertebral body osteotome the most according to claim 1, is characterized in that lines L1 overlaps with arc x.
Arc vertebral body osteotome the most according to claim 1 and 2, it is characterized in that the difference setting the radius of arc x and arc y as △ r, if
Spacing between the head and the tail of lines L2 2 is d；The scope of △ r:d is 1～1.5.
Arc vertebral body osteotome the most according to claim 1 and 2, it is characterized in that the difference setting the radius of arc x and arc y as △ r, if
Spacing between the head and the tail of lines L2 2 is d；△ r:d is 1.25.
Arc vertebral body osteotome the most according to claim 3, is characterized in that the scope of △ r is 3～8mm.
Arc vertebral body osteotome the most according to claim 4, is characterized in that △ r is 5mm.
Arc vertebral body osteotome the most according to claim 1 and 2, is characterized in that in a of face: blade bossing correspondence profile
Top be arc be semi arch.
Arc vertebral body osteotome the most according to claim 1 and 2, is characterized in that in a of face: blade bossing correspondence profile
Top be arc be the semi arch of radius 0.5mm.
Arc vertebral body osteotome the most according to claim 1, is characterized in that chisel grip body surfaces is carved with net form groove；Connecting rod
For the round platform being gradually reduced to first diameter by tail；Axis and the arc x of connecting rod are tangent.
Arc vertebral body osteotome the most according to claim 1, is characterized in that the central angle alpha of arc x is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786366.6U CN205667567U (en) | 2015-10-11 | 2015-10-11 | A kind of arc vertebral body osteotome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786366.6U CN205667567U (en) | 2015-10-11 | 2015-10-11 | A kind of arc vertebral body osteotome |
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| Publication Number | Publication Date |
|---|---|
| CN205667567U true CN205667567U (en) | 2016-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520786366.6U Expired - Fee Related CN205667567U (en) | 2015-10-11 | 2015-10-11 | A kind of arc vertebral body osteotome |
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| Country | Link |
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| CN (1) | CN205667567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111248978A (en) * | 2020-03-02 | 2020-06-09 | 成都中医药大学附属医院 | Adjustable traditional Chinese medicine cutting and treating knife for inferior turbinate |
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
-
2015
- 2015-10-11 CN CN201520786366.6U patent/CN205667567U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111248978A (en) * | 2020-03-02 | 2020-06-09 | 成都中医药大学附属医院 | Adjustable traditional Chinese medicine cutting and treating knife for inferior turbinate |
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
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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: 20161102 Termination date: 20171011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |