CN102018550B - Posterior ligament coulter - Google Patents
Posterior ligament coulter Download PDFInfo
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- CN102018550B CN102018550B CN2010105670340A CN201010567034A CN102018550B CN 102018550 B CN102018550 B CN 102018550B CN 2010105670340 A CN2010105670340 A CN 2010105670340A CN 201010567034 A CN201010567034 A CN 201010567034A CN 102018550 B CN102018550 B CN 102018550B
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- colter
- plough
- passivity
- blunt separation
- blunt
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Abstract
The invention discloses a novel posterior ligament coulter which comprises a cylindrical handle part in near end for hand hold, a cylindrical coulter body part, a passivity peeling part with a round and blunt front end, and a sharp plough breaking part which are connected into a whole, wherein the passivity peeling part at the far end is vertically connected with a body part in a smooth transition mode, and the sharp plough breaking part extends from the lowest end of the body part to the far end and is in a plough shape. In the invention, because a passivity peeling tool is arranged at the front end of the coulter, the exchanging of a passivity stripper and a sharp stripper is avoided when the posterior ligament is peeled off in a surgery; and during tissue passivity separation, the posterior ligament can be safely peeled off by utilizing the sharp plough breaking part of the novel posterior ligament coulter;the risk of harming endorhachis and spinal cord in the surgery is reduced greatly, the peeling during the passivity separation is achieved, the surgery time is saved, and the safety of the surgery is increased.
Description
Technical field
The invention belongs to a kind of medical apparatus and instruments; Relate to the medical apparatus and instruments that in spinal operation, is used to peel off tissue; Be particularly related to a kind of posterior longitudinal ligament colter, this posterior longitudinal ligament colter can passivity in spinal column way of escape vertebral plate opens the door operation separates this posterior longitudinal ligament of sharp property cut-out in the posterior longitudinal ligament.
Background technology
At present, cervical spondylosis patient is a common clinical reason sign with cervical vertebra regression, narrow, hyperosteogeny, shakiness etc., can have a strong impact on patient's daily life, work, quality of life.Surgical operation is one of present efficacious therapy method, and the purpose of operation is to recover again the normal sequence of cervical vertebra and curvature, height and the mobility of cervical vertebra, keeps the stability of cervical vertebra, and improves bone property pressurized function of nervous system.Along with all kinds of new operations theoretical appearance and the technological improvement of internal fixation of spine, the clinical operation method also constantly improves.Wherein the posterior cervical canalis spinalis enlarges plasty; Be that the posterior cervical operation of opening the door has become the common technology in the cervical posterior approach, it not only can fully reduce pressure to the spinal cord and the nerve root of pressurized, recovers the partial volume of canalis spinalis; And the postoperative unstable spine that can avoid being caused behind the traditional laminectomy for decompression occurs; The later stage swan neck deformity is with extensive cicatrix and shrink, and the canalis spinalis anteroposterior diameter dwindles gradually, symptomatic recurrence or complication such as increase the weight of.
Yet, all adopt in the present existing surgical technic and organize detacher to come chorista, prepare passivity and two kinds of detachers of sharp property simultaneously according to different separation purpose needs, making needs frequent two kinds of detachers of replacing often in operation.Because posterior longitudinal ligament is connected closely with the canalis spinalis rear wall, when in the operation of opening the door, raising vertebral plate, need passivity to separate posterior longitudinal ligament, when avoiding damaging dura mater and spinal cord, cut off posterior longitudinal ligament and accomplish the operation of opening the door, there is certain risk in operation process; Particularly for some particular patients '; The patient serious like OPLL, hypertrophy of ligamentum flavum and local regression, that cicatrix is shunk, very difficult when separating posterior longitudinal ligament, operation risk increases greatly; When opening the door, very easily damage dura mater and spinal cord, cause serious consequence.
Summary of the invention
To above-mentioned existing defective and deficiency; The objective of the invention is to; A kind of posterior longitudinal ligament colter is provided; This posterior longitudinal ligament colter the posterior cervical canalis spinalis enlarge plasty promptly open the door in the process can safety peel off and cut off posterior longitudinal ligament, make open the door and operation process safer, practice thrift operating time;
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of posterior longitudinal ligament colter is characterized in that, this posterior longitudinal ligament colter is an integral structure, is divided into the disconnected portion of handle portion, colter body, blunt separation portion and sharp property plough, and described handle portion is a cylinder, is convenient to the patient and holds; One end of colter body is the cylinder that is connected with handle portion; Its cylindrical diameter of 1/3 part is down diminished to far-end by near-end gradually; And become 90 ° of blunt smooth transition of circle to be connected with blunt separation portion front end, and the bottom surface cross section of described blunt separation portion is trapezoidal, nose circle is blunt smoothly; The disconnected portion of sharp property plough is the plough type, and promptly two sides are for approximate crescent, and crossing formation the in upper end, two sides peels off sword, and the width of disconnected portion of sharp property plough and blunt separation portion contact surface is increased to the middle part by near-end gradually, and is also increased gradually to the middle part by far-end; The disconnected portion of sharp property plough begins the top that extends to far-end and be positioned at blunt separation portion bottom from the colter body, and its length far-end is no more than the front end of blunt separation portion, and Breadth Maximum is less than the width of blunt separation portion.
Posterior longitudinal ligament colter of the present invention; Avoided the transposing of passivity and sharp property detacher in the time of can in operation, peeling off posterior longitudinal ligament; In blunt separation, can safety peel off posterior longitudinal ligament, significantly reduced the risk of damage spinal dura mater and spinal cord in art; Save operating time, increase the safety of operation.
Be used to peel off local organization in other operations that posterior longitudinal ligament colter of the present invention is also little applicable to the working place, operative site is dark etc.
Description of drawings
Fig. 1 is a posterior longitudinal ligament colter overall structure schematic perspective view of the present invention;
Fig. 2 is the side schematic view of Fig. 1;
Fig. 3 is the schematic top plan view of Fig. 1;
Fig. 4 is blunt separation portion and the disconnected portion of sharp property plough perspective view;
Fig. 5 is blunt separation portion and the sharp property plough disconnected portion middle part crown position cross-sectional view of Fig. 4.Wherein, figure (a) is blunt separation portion and the disconnected portion of sharp property plough sketch map, and figure (b) is an A-A profile among the figure (a), and figure section line part promptly is crown position, a sharp property plough disconnected portion middle part section.
Below in conjunction with accompanying drawing structure of the present invention is done further to specify.
The specific embodiment
With reference to Fig. 1,2, shown in 3, posterior longitudinal ligament colter of the present invention is an integral structure, is divided into the disconnected portion 7 of handle portion 4, colter body 5, blunt separation portion 6 and sharp property plough;
Handle portion 4 is shaggy cylinder; Being convenient to the patient holds; What the one of which end connected is the colter body 5 of diameter less than handle portion 4, and following 1/3 section diameter of colter body 5 is diminished to far-end by near-end gradually, and becomes 90 ° of smooth transition to be connected with blunt separation portion 6 front ends.
With reference to shown in Figure 4, the bottom surface cross section of blunt separation portion 6 is trapezoidal, and front end 8 circles are blunt level and smooth.
With reference to Fig. 4, shown in 5: it is the plough type for the disconnected portion of sharp property plough 7; Be that two sides are approximate crescent; The crossing formation in upper end, two sides peels off sword, and the width of disconnected portion of sharp property plough and blunt separation portion contact surface is increased to the middle part by near-end gradually, and is also increased gradually to the middle part by far-end.Sharp property from disconnected portion 7 from colter body 5 begin the top that extends to far-end and be positioned at blunt separation portion 6 bottom, its length far-end is no more than the front end 8 of blunt separation portion 6, Breadth Maximum is less than the width of blunt separation portion 6.
The present invention in use; Only need the posterior longitudinal ligament colter is stretched into ligament or the tissue place that need peel off; Separate local ligament or tissue with blunt separation portion 6 along canalis spinalis rear wall passivity, the disconnected portion 7 of sharp property plough can cut off ligament or the tissue that separates simultaneously when peeling off, and has reduced the prolongation that traditional passivity, sharp property detacher are changed the operating time that causes; And can reduce the probability of damage dura mater and spinal cord, increase operation safety greatly.
Claims (3)
1. posterior longitudinal ligament colter; It is characterized in that this posterior longitudinal ligament colter is an integral structure, be divided into the disconnected portion (7) of handle portion (4), colter body (5), blunt separation portion (6) and sharp property plough; Described handle portion (4) is a cylinder, is convenient to the patient and holds; One end of colter body (5) is the cylinder that is connected with handle portion (4); Its cylindrical diameter of 1/3 part is down diminished to far-end by near-end gradually; And become 90 ° of blunt smooth transition of circle to be connected with blunt separation portion (6) front end; The bottom surface cross section of described blunt separation portion (6) is trapezoidal, and nose circle is blunt level and smooth; The disconnected portion (7) of sharp property plough is the plough type, and promptly two sides are for approximate crescent, and crossing formation the in upper end, two sides peels off sword, and the disconnected portion (7) of sharp property plough is increased to the middle part by near-end with the width of blunt separation portion (6) contact surface gradually, and is also increased gradually to the middle part by far-end; The disconnected portion (7) of sharp property plough begins the top that extends to far-end and be positioned at blunt separation portion (6) bottom from colter body (5), and its length far-end is no more than the front end of blunt separation portion (6), and Breadth Maximum is less than the width of blunt separation portion (6).
2. posterior longitudinal ligament colter as claimed in claim 1 is characterized in that, described blunt separation portion (6), the disconnected portion (7) of sharp property plough and colter body (5) are smooth transition and connect.
3. posterior longitudinal ligament colter as claimed in claim 1 is characterized in that, the periphery of described handle portion (4) is coarse, and its diameter is greater than the cylinder diameter of colter body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105670340A CN102018550B (en) | 2010-12-01 | 2010-12-01 | Posterior ligament coulter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105670340A CN102018550B (en) | 2010-12-01 | 2010-12-01 | Posterior ligament coulter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102018550A CN102018550A (en) | 2011-04-20 |
| CN102018550B true CN102018550B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105670340A Expired - Fee Related CN102018550B (en) | 2010-12-01 | 2010-12-01 | Posterior ligament coulter |
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| Country | Link |
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| CN (1) | CN102018550B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7303033B2 (en) * | 2019-06-13 | 2023-07-04 | 周 中村 | Spinal surgery sharp spoon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216815Y (en) * | 1994-11-17 | 1996-01-10 | 甄平 | Trepan for taking bone |
| CN101336839A (en) * | 2008-08-08 | 2009-01-07 | 浙江大学 | Instrument for anterior approach operation of thoracolumbar |
| CN201861717U (en) * | 2010-12-01 | 2011-06-15 | 中国人民解放军第四军医大学 | Posterior longitudinal ligament coulter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7776068B2 (en) * | 2003-10-23 | 2010-08-17 | Trans1 Inc. | Spinal motion preservation assemblies |
| US20090227562A1 (en) * | 2004-08-10 | 2009-09-10 | Pfizer Inc. | Combination of a Selective Noradrenaline Reuptake Unhibitor and a PDEV Inhibitor |
-
2010
- 2010-12-01 CN CN2010105670340A patent/CN102018550B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216815Y (en) * | 1994-11-17 | 1996-01-10 | 甄平 | Trepan for taking bone |
| CN101336839A (en) * | 2008-08-08 | 2009-01-07 | 浙江大学 | Instrument for anterior approach operation of thoracolumbar |
| CN201861717U (en) * | 2010-12-01 | 2011-06-15 | 中国人民解放军第四军医大学 | Posterior longitudinal ligament coulter |
Non-Patent Citations (1)
| Title |
|---|
| JP特表2008-509900A 2008.04.03 |
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| CN102018550A (en) | 2011-04-20 |
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Granted publication date: 20120425 Termination date: 20161201 |
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