CN203408082U - Novel vertebra bone chisel - Google Patents
Novel vertebra bone chisel Download PDFInfo
- Publication number
- CN203408082U CN203408082U CN201320180831.2U CN201320180831U CN203408082U CN 203408082 U CN203408082 U CN 203408082U CN 201320180831 U CN201320180831 U CN 201320180831U CN 203408082 U CN203408082 U CN 203408082U
- Authority
- CN
- China
- Prior art keywords
- blade
- osteotome
- vertebra
- dural sac
- chisel
- 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 novel vertebra bone chisel applied to the posterior thoracic vertebra or the posterior lumbar vertebra to amputate all of or part of the vertebra. A striking part, a chisel handle and a connection part of the novel vertebra bone chisel inherit the advantages of simplicity and convenience for operation of a conventional bone chisel. An included angle of 25 degrees is formed between a blade part of the bone chisel and the connection part; the upper side and the lower side of the bone chisel are of a concentrical arc shape; the design increases the width and the depth of chiseling the vertebra; the upper side of the blade part protrudes out of a cutting edge plane by 1mm at the head end; the up-and-down distance of the protruding part of the blade part is 0.5mm; the cross section of the protruding part of the blade part is of a semicircular shape; and if the novel vertebra bone chisel is in contact with the dural sac in the operation, the protruding part of the blade part can slightly jack up the dural sac in the front of the producing part when the blade part moves forwards, and the upper side of the arc blade part with an upward opening is attached to the dural sac, so that the aims of protecting the dural sac and reducing spinal cord stimulation and damage are fulfilled.
Description
Affiliated technical field
This utility model relates to technical field of medical instruments, is a kind of novel vertebral body osteotome using while being applied to thoracic vertebra Posterior approach or the whole vertebral bodys of lumbar vertebra Posterior approach amputation or part vertebral body, hereinafter to be referred as " osteotome ".
Background technology
For the patient of thoracic vertebra, lumbar vertebra lateral bending or fracture, often need to remove part or all of pedicle of vertebral arch, articular process and vertebral body and realize the orthopedic object of osteotomy through Posterior approach, and osteotome is the most frequently used apparatus of excision vertebral body.Mostly the osteotome of clinical practice is to design according to cutting the shallow structure demand that breast lumbar vertebra vertebral plate, articular process etc. are positioned at dural sac rear side, outside; the head end of osteotome mostly is approximate cuboid, the bladed structure of attenuation gradually from top to bottom, does not have the function that neuroprotective, dural sac and restriction cut the degree of depth.Due to dural sac and nerve root, to can bear mechanical traction power less, while being positioned at the vertebral body of dural sac front side and nerve root below with traditional osteotome excision, working place is extremely limited, if patient lacks experience, in art, the risk of Spinal Cord, nerve root and dural sac is higher; In addition the structure of straight shape is adjusted direction difficulty in narrow space, and the head end of osteotome often cannot reach the degree of depth and the angle of expection, and finally causes the operating time in vertebral body osteotomy poor effect, art to extend and amount of bleeding increase.We improve on the basis of the past osteotome, have designed a kind of Novel bone chisel, to reaching neuroprotective and dural sac, being convenient to operation and minimizing operation wound object in art.
Summary of the invention
The chisel grip of osteotome is identical with traditional osteotome, is cylindrical structural, and its upper and lower side diameter is identical, and the colored striated structure of surface engraving has increased frictional force and the comfort while using.
The beating part of osteotome is to be positioned at the cylindrical shape structure that chisel grip upper end, diameter are less than the about 2mm of chisel grip, and pressure when its less cross-sectional area has increased hammering has caused the risk of osteotome displacement because of Overexertion while having reduced operation.
The connecting portion of osteotome is the directly cylindrical structure through from top to bottom reducing gradually of a cross section, and its maximum gauge is less than the about 3mm of chisel grip, and the less diameter in lower end has reduced the occupy-place effect of osteotome itself, is convenient to adjust in art direction.
The blade of osteotome and osteotome connecting portion are 25 ° of angles, its upper and lower both sides are the identical circular arc in the center of circle, this design can guarantee that osteotome blade adjusts direction neatly, guaranteeing to cut the vertebral body while of estimating the degree of depth, also can make osteotome blade stride across vertebral body sagittal median line, cut the vertebral body that operates offside as much as possible, reach the object that reduces repetitive operation, shortens operating time.
The upside of osteotome blade is at the outstanding about 1mm of cutting edge plane of head end, and this is outstanding is about 0.5mm apart from the upside arc-plane distance of blade bottom, and this outstanding front 1/2 transverse section semicircular structure that is radius 0.5mm.Cutting edge is being positioned over while cutting in advance on vertebral body; outstanding and the dural sac of upside contacts; along with osteotome blade forwards moves; the outstanding front end of semicircular structure can be by the place ahead dural sac jack-up slightly upward of contact with it; and the blade upside of opening upwards can fit with dural sac, reach the object of protection dural sac, minimizing spinal cord stimulation and damage.
Accompanying drawing explanation
Fig. 1 is the local enlarged side view of osteotome side view and blade head end.
The numbering at each position in above figure: 1, osteotome beating part 2, chisel grip 3, osteotome connecting portion 4, osteotome blade 5, osteotome cutting edge 6, osteotome blade head end protuberance
The specific embodiment
For explanation better, this is practical, below take waist 1 old fracture companion kyphosis deformity case and accepts waist 1 vertebral body bilateral osteotomy orthopaedy and describe in detail as example.
According to preoperative nuclear magnetic resonance, x-ray tomography scanning+three-dimensional reconstruction, determine osteotomy scope.
The vertebral plate, articular process and the transverse process that appear Bilateral chest 12, waist 1, sting except waist 1 both sides vertebral plate, cuts Bilateral chest 12 inferior articular processs and waist 1 superior articular process, to expand the range of exposure of waist 1 vertebral body with common osteotome.
Assistant in left side with nerve dissector by dural sac to the left tractive to appearing waist 1 vertebral body right side 1/3, by nerve root downwards tractive to appearing waist 1 vertebral body lower edge.
Patient in right side to hold osteotome chisel grip 2, osteotome blade 4 is positioned over to the lower edge that waist 1 vertebral body in right side is planned to implement osteotomy scope, wherein the plane at cutting edge 5 places and the axis of dural sac are vertical, the protuberance 6 of blade upside is near dural sac but be positioned at dural sac below, and the downside of blade 4 is away from dural sac one side.With hammer, impact osteotome beating part 1, blade 4 upside protuberances 6, by dural sac jack-up upward, have been avoided the damage of 5 pairs of dural sacs of cutting edge, and below cutting edge 5 cutters that are now positioned at blade protuberance 6 are worn waist 1 vertebral body right side cortical bone, spongy bone.If it is larger to plan to implement osteotomy scope, the position at the outstanding position 6 of blade can be adjusted upward, now the scope that cuts of osteotome blade 4 can expand to the left.
Osteotome blade 4 is positioned over to the upper limb that waist 1 vertebral body is planned to implement osteotomy scope, wherein the protuberance 6 of blade upside is near dural sac but be positioned at dural sac below, the downside of blade 4 is away from dural sac one side, according to the position of planning to implement osteotomy scope adjustment blade protuberance 6, cutter is worn cortical bone, the spongy bone of waist 1 vertebral body upper limb.The blade of traditional osteotome is positioned over to be parallel to the direction of dural sac axis on waist 1 vertebral body of dural sac below, cutter is worn cortical bone and the spongy bone of waist 1 vertebral body again, takes out the vertebral body of amputation.
Patient and assistant's reversing of position, in kind utilize Novel bone chisel and traditional osteotome to cut part waist 1 vertebral body in left side planning to implement osteotomy scope.Expand as required operative incision, implant pedicle screw and fix.
Claims (1)
1. a novel vertebral body osteotome, it is characterized in that: it is applied to the art formula through the thoracic vertebra way of escape or the whole vertebral bodys of lumbar vertebral posterior amputation or part vertebral body, by osteotome beating part, chisel grip, osteotome connecting portion and blade four parts, formed, wherein the upside of blade is at the outstanding cutting edge plane 1mm of head end, and this outstanding distance up and down for 0.5mm, front 1/2 transverse section be the semicircle of radius 0.5mm; Blade and osteotome connecting portion are 25 ° of angles, and its upper and lower both sides are the identical circular arc in the center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320180831.2U CN203408082U (en) | 2013-04-10 | 2013-04-10 | Novel vertebra bone chisel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320180831.2U CN203408082U (en) | 2013-04-10 | 2013-04-10 | Novel vertebra bone chisel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203408082U true CN203408082U (en) | 2014-01-29 |
Family
ID=49971012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320180831.2U Expired - Fee Related CN203408082U (en) | 2013-04-10 | 2013-04-10 | Novel vertebra bone chisel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203408082U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104323820A (en) * | 2014-11-05 | 2015-02-04 | 中国人民解放军第二军医大学 | Vertebral arch pedicle bone chisel with arc-shaped cutting edge and application thereof |
| CN108742870A (en) * | 2018-07-03 | 2018-11-06 | 杭州埃杜医疗科技有限公司 | A kind of Minor articulus prosthesis instrument packet |
| CN112971907A (en) * | 2021-01-07 | 2021-06-18 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
-
2013
- 2013-04-10 CN CN201320180831.2U patent/CN203408082U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104323820A (en) * | 2014-11-05 | 2015-02-04 | 中国人民解放军第二军医大学 | Vertebral arch pedicle bone chisel with arc-shaped cutting edge and application thereof |
| CN108742870A (en) * | 2018-07-03 | 2018-11-06 | 杭州埃杜医疗科技有限公司 | A kind of Minor articulus prosthesis instrument packet |
| CN112971907A (en) * | 2021-01-07 | 2021-06-18 | 宁波华科润生物科技有限公司 | Novel bone drill for vertebral body |
| CN112971907B (en) * | 2021-01-07 | 2022-07-05 | 宁波华科润生物科技有限公司 | Bone drill for centrum |
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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: 20140129 Termination date: 20150410 |
|
| EXPY | Termination of patent right or utility model |