CN104095673B - A kind of pedicle nail sleeve pipe - Google Patents
A kind of pedicle nail sleeve pipe Download PDFInfo
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- CN104095673B CN104095673B CN201410088412.5A CN201410088412A CN104095673B CN 104095673 B CN104095673 B CN 104095673B CN 201410088412 A CN201410088412 A CN 201410088412A CN 104095673 B CN104095673 B CN 104095673B
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- sleeve
- locking sleeve
- pedicle nail
- plane
- clamping limb
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of pedicle nail sleeve pipe to include, sleeve body and the first locking sleeve, sleeve body includes gripper arm segments and cylindrical section, gripper arm segments includes the first clamping limb and the second clamping limb, first clamping limb outer surface is transversely provided with the first inclined-plane, the second clamping limb outer surface is transversely provided with the second inclined-plane; First locking sleeve is socketed on the cylindrical section of sleeve body, first locking sleeve has the inclined-plane matched with described first inclined-plane and described second inclined-plane, when the first locking sleeve moves along sleeve body to gripper arm segments, the inclined-plane of the first locking sleeve applies the power making the first clamping limb and the second clamping limb move towards to the first inclined-plane and described second inclined-plane. Thus realizing the first clamping limb and the clamping to pedicle nail of second clamping limb. The pedicle nail casing operations nail simple, upper of the present invention is convenient flexibly, reduces the operation easier of operation, reduces operation risk.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of pedicle nail sleeve pipe.
Background technology
Common thoracolumbar spine disease includes degeneration, fracture, tumor, infection etc. Traditional internal fixation of spine operation wound is relatively big, and soft tissue cuts and peels off widely, it is easy to cause hemorrhage more, and the physiology of spinal column is dissected and changed and the complication such as vertebral body is unstable, post-operative recovery time prolongation. Micro-wound surgical operation starts development from the seventies in last century, and along with the application of operating theater instruments continuous renewal, constantly appearance and the art Computer assisting navigation of advanced medical imaging equipment, less invasive techniques develops quickly in spinal surgery. Minimally Invasive Surgery reduces operating time, reduces the sickness rate of complication, alleviates Shu Zhong tissue injury and hemorrhage, shortens patient recovery times, alleviates operation pain, be that otch is attractive in appearance, shortens and is in hospital and rehabilitation duration, reduces the Financial cost of drug use and hospital costs. Along with the development of science and technology, vertebral column minimally invasive technology, using the part as conventional surgical techniques, becomes a main trend of internal fixation of spine technical development.
Pedicle screw instrumentation has the fixing advantage of three posts, is a kind of highly developed spine surgical technique, is widely used. Generally the securing member such as pedicle screw, hook implanted and fix with vertebral body, being connected by pitman, then fix with holding screw, play a supportive role. Pedicle nail sleeve pipe serves the holding of pedicle nail, positioning action in operation process, by its distinctive hollow channel, some row operations such as other apparatus realizes the screw-in to pedicle nail through sleeve pipe, fixing, lift resets, rod resets, holding screw screws can be guided under the premise of tiny incisions. But current existing vertebral column minimally invasive system yet suffers from the shortcomings such as operating process nail loaded down with trivial details, upper is difficult, motility is more weak, adds the operation easier of operation, make operation risk increase.
Therefore, it is easy that those skilled in the art is devoted to develop a kind of flexible operation, simultaneously in art can with other operating theater instruments can be good at the use of pedicle nail sleeve pipe.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of simple and convenient pedicle nail sleeve pipe.
For achieving the above object, the invention provides a kind of pedicle nail sleeve pipe, described pedicle nail sleeve pipe includes,
Sleeve body, described sleeve body includes gripper arm segments and cylindrical section, described gripper arm segments includes the first clamping limb and the second clamping limb, described first clamping limb outer surface is transversely provided with the first inclined-plane, described second clamping limb outer surface is transversely provided with the second inclined-plane; With
First locking sleeve, described first locking sleeve is socketed on the described cylindrical section of described sleeve body, described first locking sleeve has the inclined-plane matched with described first inclined-plane and described second inclined-plane, when described first locking sleeve moves along described sleeve body to described gripper arm segments, the inclined-plane of described first locking sleeve applies the power making described first clamping limb and described second clamping limb move towards to described first inclined-plane and described second inclined-plane. Under force, the relative distance of described first clamping limb and described second clamping limb shortens, thus realizing the first clamping limb and the clamping to pedicle nail of second clamping limb, the more big clamping of dynamics is more tight, when that force is removed, then pedicle nail can depart from from described pedicle nail sleeve pipe easily. Preferably, described first inclined-plane and described second inclined-plane are on the same conical surface. Herein, " inclined-plane " can be general inclined-plane, it is also possible to for the conical surface, in the present invention, preferred " inclined-plane " is the conical surface. The length direction that " sleeve body axial " is sleeve body herein, laterally refers to the width of sleeve body.
Further, the cylinder arm of described cylindrical section offers and is parallel to the groove that pedicle nail sleeve pipe is axial, described groove is to described gripper arm segments opening, and described groove is between the connecting portion and described second clamping limb and the connecting portion of described cylindrical section of described first clamping limb and described cylindrical section. Preferably, described groove is inverted U-shaped or inverted V-shaped. This groove is the breach on pedicle nail sleeve outer wall, it is possible to effectively reduce the first clamping limb and resistance that the second clamping limb moves towards.
Further, the outer wall of described sleeve body is provided with and is parallel to the guiding groove that described sleeve body is axial, and described first locking sleeve is only capable of moving along guiding groove and can not rotating when being socketed on described sleeve body. Preferably, described guiding groove is located on described cylindrical section outer wall near clamping limb place.
Further, described pedicle nail sleeve pipe also includes the second locking sleeve, described second locking sleeve is socketed on described cylindrical section, the power that in use described second locking sleeve can make described first locking sleeve move to described gripper arm segments to described first locking sleeve applying.
Further, described second locking sleeve is positioned at the side away from described gripper arm segments (outside of the first locking sleeve) of described first locking sleeve, described first locking sleeve and described second locking sleeve are provided with the screw thread cooperated, and described second locking sleeve is set to be only capable of rotating along described sleeve body outer wall and can not moving axially along described sleeve body.
Further, the described cylindrical section outer wall of described sleeve body is provided with annular groove, and described second locking sleeve is provided with the ridge protruding from the second locking sleeve inwall, and described ridge card is embedded in described annular groove.
Further, second locking sleeve is provided with threaded hole, described ridge is the bolt adapted with described hole, when described bolt screws in described hole, the tightening latch end of described bolt can protrude from the inwall of described second locking sleeve, and is entrenched in the annular groove on described cylindrical section outer wall.
Further, the number with threaded hole on described second locking sleeve is 2-6, it is preferred to 3-4.
Further, described first locking sleeve is provided with threaded aperture, described first locking sleeve is furnished with the bolt adapted with described aperture, when described bolt screws in described aperture, the tightening latch end of described bolt can protrude from the inwall of described first locking sleeve, and is entrenched in the guiding groove of described sleeve body. Preferably, the number of the threaded aperture on described first locking sleeve is 2.
Further, described first locking sleeve is provided with female thread, and described second locking sleeve is provided with the external screw thread that the female thread with described first locking sleeve matches.
Technique effect
In use, user only needs to screw the second locking sleeve, can be achieved with pedicle nail sleeve pipe to the clamping of pedicle nail or relieving. Detailed process is, user screws the second locking sleeve, and owing to the bolt on the second locking sleeve is entrenched in annular groove, therefore the second locking sleeve cannot move by facing sleeve body in the axial direction. First locking sleeve is coordinated by screw thread and the second locking sleeve, and due to the effect of guiding groove, the first locking sleeve is only capable of being axially moveable, and cannot rotate, and therefore screws in process, and the first locking sleeve can move to gripper arm segments. Under the inclined-plane of the first locking sleeve and the inclined-plane of gripping section match, the first clamping limb and the second clamping limb understand move toward one another, thus realizing the clamping to pedicle nail. Contrary, screw in reverse direction, then can decontrol pedicle nail easily. The pedicle nail casing operations nail simple, upper of the present invention is convenient flexibly, reduces the operation easier of operation, reduces operation risk.
Below with reference to accompanying drawing, the technique effect of the design of the present invention, concrete structure and generation is described further, to be fully understood from the purpose of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view of a preferred embodiment of the present invention;
Fig. 2 is the front view decomposing schematic representation of a preferred embodiment of the present invention;
Fig. 3 is the side view decomposing schematic representation of a preferred embodiment of the present invention;
Fig. 4 is the connection diagram of the sleeve body of a preferred embodiment of the present invention and the first locking sleeve;
Fig. 5 is the connection sectional view of the sleeve body of a preferred embodiment of the present invention and the first locking sleeve;
Fig. 6 is the connection diagram of the sleeve body of a preferred embodiment of the present invention and the second locking sleeve;
Fig. 7 is the connection sectional view of the sleeve body of a preferred embodiment of the present invention and the second locking sleeve;
Fig. 8 is the connection sectional view of the first locking sleeve of a preferred embodiment of the present invention and the second locking sleeve;
Fig. 9 is the connection axonometric chart of the first locking sleeve of a preferred embodiment of the present invention and the second locking sleeve;
Figure 10 is the connection diagram of the pedicle nail sleeve pipe of a preferred embodiment of the present invention and pedicle nail.
Detailed description of the invention
Embodiment 1
As it can be seen, present embodiments provide a kind of pedicle nail sleeve pipe, including, sleeve body the 1, first locking sleeve 2 and the second locking sleeve 3. Sleeve body 1 includes gripper arm segments and cylindrical section, gripper arm segments includes the first clamping limb 11 and the second clamping limb 12, first clamping limb 11 and the second clamping limb 12 symmetry be connected on cylindrical section, first clamping limb 11 outer surface is provided with the first inclined-plane 111, second clamping limb 12 outer surface is provided with the second inclined-plane 121, and the first inclined-plane 111 and the second inclined-plane 121 are perpendicular to the axial of sleeve body.First locking sleeve 2 is socketed on the cylindrical section of sleeve body 1, first locking sleeve 2 has the inclined-plane 25 matched with the first inclined-plane 111 and the second inclined-plane 121, when the first locking sleeve 2 moves along sleeve body 1 to gripper arm segments, the inclined-plane 25 of the first locking sleeve 2 applies the power making the first clamping limb 11 and the second clamping limb 12 move towards to the first inclined-plane 111 and the second inclined-plane 121. Under force, the relative distance of the first clamping limb 11 and the second clamping limb 12 shortens, thus realizing the first clamping limb 11 and the clamping to pedicle nail of second clamping limb 12, the more big clamping of dynamics is more tight, when that force is removed, then pedicle nail can depart from from pedicle nail sleeve pipe easily. In the present embodiment, the first inclined-plane 111 and the second inclined-plane 121 are on the same conical surface.
The cylinder arm of sleeve body 1 cylindrical section offers and is parallel to the axial groove of pedicle nail sleeve pipe 13, groove 13 is to gripper arm segments opening, and groove 13 is positioned at the connecting portion of the first clamping limb 11 and described cylindrical section and the centre position of the connecting portion of the second clamping limb 12 and cylindrical section. In the present embodiment, groove 13 is inverted U-shaped, and groove 13 can be inverted V-shaped in other embodiments. This groove 13 is the breach on pedicle nail sleeve outer wall, it is possible to effectively reduce the first clamping limb 11 and resistance that the second clamping limb 12 moves towards.
Being provided with on the outer wall of sleeve body 1 and be parallel to the axial guiding groove of sleeve body 15, in the present embodiment, the quantity of guiding groove 15 is two, on the symmetrical outer wall being arranged on sleeve body 1. First locking sleeve 2 is arranged with threaded aperture 21 and aperture 22, first locking sleeve 2 is furnished with the bolt 23 and bolt 24 that adapt with aperture 21 and aperture 22, when bolt screws in aperture, the tightening latch end of bolt can protrude from the inwall of the first locking sleeve 1, and is entrenched in the guiding groove 15 of sleeve body 1. Therefore, the first locking sleeve 2 is only capable of moving along guiding groove 15 and can not rotating when being socketed in sleeve body 1. Adopt dismountable bolt, can not only easily the first locking sleeve 2 be assembled in sleeve body 1, and in use, can passing through to tight a bolt to make the first locking sleeve 2 be fixed on closely in sleeve body 1, can effectively be clamped thus realizing pedicle nail in operation process.
Second locking sleeve 3 is socketed on cylindrical section. Second locking sleeve 3 is positioned at the outside of the first locking sleeve 2, and the first locking sleeve 2 is provided with female thread, and the second locking sleeve 3 is provided with the external screw thread that the female thread with the first locking sleeve 2 matches. Defined herein as, one end of the telescopic joint pedicle nail of pedicle nail is inner side, and the other end is outside.
The cylindrical section outer wall of sleeve body 1 is provided with annular groove, second locking sleeve 3 is provided with threaded hole 31, the number of the present embodiment mesopore 31 is 4, centrosymmetry is arranged, second locking sleeve 3 is furnished with the bolt 32 adapted with hole 31, when bolt 32 advances through hole 31, the tightening latch end of bolt 32 can protrude from the inwall of the second locking sleeve 3, and is entrenched in the annular groove 14 on cylindrical section outer wall. Second locking sleeve 3 is only capable of rotating along sleeve body 1 outer wall and can not moving axially along sleeve body 1. And the design of employing bolt, have an advantage in that, it is possible to enable the second locking sleeve 3 be fixed in sleeve body 1 closely by tighting a bolt thus realizing pedicle nail in operation process and effectively being fixed.
In use, user only needs to screw the second locking sleeve 3, can be achieved with pedicle nail sleeve pipe to the clamping of pedicle nail 01 or relieving.Detailed process is, user screws the second locking sleeve 3, and owing to the bolt 32 on the second locking sleeve 3 is entrenched in annular groove 14, therefore the second locking sleeve 3 cannot move by facing sleeve body 1 in the axial direction. First locking sleeve 2 is coordinated by screw thread and the second locking sleeve 3, and due to the effect of guiding groove 15, the first locking sleeve 2 is only capable of moving axially along sleeve body 1, and cannot rotate, and therefore screws in process, and the first locking sleeve 2 can move to gripper arm segments. Under working in coordination in the inclined-plane (first inclined-plane 111 and the second inclined-plane 121) of the inclined-plane 25 of the first locking sleeve 2 and gripping section, the first clamping limb 11 and the second clamping limb 12 understand move toward one another, thus realizing the clamping to pedicle nail 01. Contrary, screw in reverse direction, then can decontrol pedicle nail 01 easily.
The preferred embodiment of the present invention described in detail above. Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work. Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (11)
1. a pedicle nail sleeve pipe, it is characterised in that described pedicle nail sleeve pipe includes,
Sleeve body, described sleeve body includes gripper arm segments and cylindrical section, described gripper arm segments includes the first clamping limb and the second clamping limb, described first clamping limb outer surface is transversely provided with the first inclined-plane, described second clamping limb outer surface is transversely provided with the second inclined-plane; With
First locking sleeve, described first locking sleeve is socketed on the described cylindrical section of described sleeve body, described first locking sleeve has the inclined-plane matched with described first inclined-plane and described second inclined-plane, when described first locking sleeve moves along described sleeve body to described gripper arm segments, the inclined-plane of described first locking sleeve applies the power making described first clamping limb and described second clamping limb move towards to described first inclined-plane and described second inclined-plane;
Described pedicle nail sleeve pipe also includes the second locking sleeve, described second locking sleeve is socketed on described cylindrical section, the power that in use described second locking sleeve can make described first locking sleeve move to described gripper arm segments to described first locking sleeve applying;
Described second locking sleeve is in the side away from described gripper arm segments of described first locking sleeve, described first locking sleeve and described second locking sleeve are provided with the screw thread cooperated, and described second locking sleeve is set to be only capable of rotating along described sleeve body outer wall and can not moving axially along described sleeve body.
2. pedicle nail sleeve pipe as claimed in claim 1, it is characterized in that, the cylinder arm of described cylindrical section offers and is parallel to the groove that pedicle nail sleeve pipe is axial, described groove is to described gripper arm segments opening, and described groove is between the connecting portion and described second clamping limb and the connecting portion of described cylindrical section of described first clamping limb and described cylindrical section.
3. pedicle nail sleeve pipe as claimed in claim 1, it is characterized in that, the outer wall of described sleeve body is provided with and is parallel to the guiding groove that described sleeve body is axial, and described first locking sleeve is only capable of moving along guiding groove and can not rotating when being socketed on described sleeve body.
4. pedicle nail sleeve pipe as claimed in claim 2, it is characterised in that described groove is inverted U-shaped or inverted V-shaped.
5. pedicle nail sleeve pipe as claimed in claim 1, it is characterized in that, the described cylindrical section outer wall of described sleeve body is provided with annular groove, and described second locking sleeve is provided with the ridge protruding from the second locking sleeve inwall, and described ridge card is embedded in described annular groove.
6. pedicle nail sleeve pipe as claimed in claim 5, it is characterized in that, second locking sleeve is provided with threaded hole, described ridge is the bolt adapted with described hole, when described bolt screws in described hole, the tightening latch end of described bolt can protrude from the inwall of described second locking sleeve, and is entrenched in the annular groove on described cylindrical section outer wall.
7. pedicle nail sleeve pipe as claimed in claim 6, it is characterised in that the number with threaded hole on described second locking sleeve is 2-6.
8. pedicle nail sleeve pipe as claimed in claim 7, it is characterised in that the number with threaded hole on described second locking sleeve is 3-4.
9. pedicle nail sleeve pipe as claimed in claim 3, it is characterized in that, described first locking sleeve is provided with threaded aperture, described first locking sleeve is furnished with the bolt adapted with described aperture, when described bolt screws in described aperture, the tightening latch end of described bolt can protrude from the inwall of described first locking sleeve, and is entrenched in the guiding groove of described sleeve body.
10. pedicle nail sleeve pipe as claimed in claim 9, it is characterised in that the number of the threaded aperture on described first locking sleeve is 2.
11. pedicle nail sleeve pipe as claimed in claim 5, it is characterised in that described first locking sleeve is provided with female thread, and described second locking sleeve is provided with the external screw thread that the female thread with described first locking sleeve matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088412.5A CN104095673B (en) | 2014-03-11 | 2014-03-11 | A kind of pedicle nail sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088412.5A CN104095673B (en) | 2014-03-11 | 2014-03-11 | A kind of pedicle nail sleeve pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104095673A CN104095673A (en) | 2014-10-15 |
| CN104095673B true CN104095673B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410088412.5A Active CN104095673B (en) | 2014-03-11 | 2014-03-11 | A kind of pedicle nail sleeve pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107260280B (en) * | 2017-06-29 | 2023-04-07 | 闻泰医疗科技（上海）有限公司 | Pedicle screw lifting assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201558161U (en) * | 2009-11-03 | 2010-08-25 | 山东威高骨科材料有限公司 | Screw holding orthopedic repositor |
| CN202637097U (en) * | 2012-07-06 | 2013-01-02 | 常州市康辉医疗器械有限公司 | Minimally-invasive spine pedicle-screw holding sleeve |
| CN203138671U (en) * | 2013-02-26 | 2013-08-21 | 常州健力邦德医疗器械有限公司 | Bone screw tightening device |
| CN203303100U (en) * | 2013-05-16 | 2013-11-27 | 常州同创医疗器械科技有限公司 | Stapler tail portion adjusting mechanism with claw-shaped locking device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080200918A1 (en) * | 2007-02-12 | 2008-08-21 | James Spitler | Pedicle screw driver |
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2014
- 2014-03-11 CN CN201410088412.5A patent/CN104095673B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201558161U (en) * | 2009-11-03 | 2010-08-25 | 山东威高骨科材料有限公司 | Screw holding orthopedic repositor |
| CN202637097U (en) * | 2012-07-06 | 2013-01-02 | 常州市康辉医疗器械有限公司 | Minimally-invasive spine pedicle-screw holding sleeve |
| CN203138671U (en) * | 2013-02-26 | 2013-08-21 | 常州健力邦德医疗器械有限公司 | Bone screw tightening device |
| CN203303100U (en) * | 2013-05-16 | 2013-11-27 | 常州同创医疗器械科技有限公司 | Stapler tail portion adjusting mechanism with claw-shaped locking device |
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| Publication number | Publication date |
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| CN104095673A (en) | 2014-10-15 |
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