CN202497225U - Pedicle screw for minimally invasive surgery - Google Patents
Pedicle screw for minimally invasive surgery Download PDFInfo
- Publication number
- CN202497225U CN202497225U CN2012201852147U CN201220185214U CN202497225U CN 202497225 U CN202497225 U CN 202497225U CN 2012201852147 U CN2012201852147 U CN 2012201852147U CN 201220185214 U CN201220185214 U CN 201220185214U CN 202497225 U CN202497225 U CN 202497225U
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- CN
- China
- Prior art keywords
- main body
- cylinder bar
- pedicle screw
- minimally invasive
- invasive surgery
- 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 - Lifetime
Links
- 238000002324 minimally invasive surgery Methods 0.000 title claims abstract description 16
- 210000005056 cell body Anatomy 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract 2
- 238000007906 compression Methods 0.000 abstract 2
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010010214 Compression fracture Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 206010071229 Procedural haemorrhage Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 240000008866 Ziziphus nummularia Species 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
A pedicle screw for minimally invasive surgery comprises a main body, wherein a U-shaped slot of a fixed connecting bar is arranged at the upper end of the main body, a compression screw cap is connected with an internal thread of the U-shaped slot, a cylindrical rod extending outward is arranged at the upper end of the main body, openings matched with the U-shaped slot are arranged at two sides of the cylindrical rod, and a groove convenient to break off is arranged between the cylindrical rod and the main body. The pedicle screw is reasonable in structure design, is simple in structure and convenient to produce by adopting the fixed connecting bar with a U-shaped slot and compression screw structure, and can enhance the reset capability of a pedicle screw system in treatment of lumbar vertebrae fracture operation; and a working channel can be established in operation by adopting the screw with the structure, and operative wound can be reduced.
Description
Technical field
This utility model relates to the internal fixation of spine device of the clinical use of a kind of medical science orthopaedics, and especially a kind of Minimally Invasive Surgery is used pedicle screw.
Background technology
At present, often use pedicle screw system treatment lumbar vertebra compression fracture and spinal disease thereof clinically, routine operation need cut soft tissues such as skin and the other muscle of sour jujube, and wound is bigger.Spinal surgery was gradually to Wicresoft's development in recent years, and this just needs the original design of improvement, meets the Minimally Invasive Surgery requirement.
Otch is very little during Minimally Invasive Surgery; So need set up a service aisle, the spinal operation Wicresoft internal fixation system of several external introductions of using clinically at present is like Sextent system, SQIRIT system etc.; In operation, need to acquire and the installment work passage on the former pedicle of vertebral arch screw basis; Complicated operation is loaded down with trivial details, has prolonged operating time, has increased intraoperative hemorrhage.
In addition; The pedicle screw of this several Wicresofts internal fixation system is universal design, and what be primarily aimed at is spinal column degenerated disease, and there is obvious defects in it when the operation of treatment breast lumbar vertebra folding; Its reset strength a little less than, can not have efficient recovery to hinder the height and the spinal column physiology curvature of vertebra.Therefore be badly in need of occurring a kind of simplicity of design, easy to operate and have a novel vertebral pedicle bolt that the lumbar vertebra compression fracture Minimally Invasive Surgery of reduction with good ability is used.
Summary of the invention
This utility model will solve the shortcoming of above-mentioned prior art, provides a kind of Minimally Invasive Surgery that carries Wicresoft's passage to use pedicle screw, has the reduction with good ability, and passage screw thread distortion can prevent that nut from screwing in the time.
This utility model solves the technical scheme that its technical problem adopts: this Minimally Invasive Surgery is used pedicle screw; Comprise main body; The upper end of main body is provided with the U type groove that is fixedly connected rod, and U type groove female thread is connected with clamping nut, and wherein the upper end of main body is provided with outward extending cylinder bar; The both sides of cylinder bar are provided with the opening that is complementary with U type groove, and between cylinder bar and main body, are provided with the groove of being convenient to fracture.Wherein main body is fixed on the spinal column, and outward extending cylinder bar can stretch to outside the skin, and this cylinder bar can form service aisle; Can under direct-view, insert pitman; And the screw-in clamping nut, operation finishes tailing edge groove and cylinder bar is fractureed takes away, does not influence the fixing of spinal column.
Perfect for further, the outer end of cylinder bar is with annular ring for fixing, and wherein the outer end of cylinder bar is provided with external screw thread, and wherein annular ring for fixing is threaded on the external screw thread.Because cylinder bar is longer, the outer end of cylinder bar awards screw thread design, and the annular ring for fixing that is threaded is to guarantee the distortion that can not be distorted of this service aisle.
Groove is the cell body of V-structure.This groove adopts V-structure, is convenient to after operation finishes cylinder bar fractureed.
Cylinder bar and main body are structure as a whole, and the inwall of cylinder bar and main body junction is provided with female thread.Adopt integrative-structure, be convenient to the one manufacturing, produce easily, and the female thread on the cylinder bar inwall is convenient to screw in clamping nut.
The effect that this utility model is useful is: this utility model reasonable in design, and adopt U type groove to be fixedly connected rod with the structure of clamping nut, simple in structure, be convenient to produce, and increase the reset capability of this pedicle of vertebral arch system in the operation of treatment lumbar vertebra compression fracture; Adopt the screw of this structure in operation, to set up service aisle, reduce operation wound.
Description of drawings
Fig. 1 is the whole structural representation of this utility model;
Fig. 2 is the integrally-built front view of this utility model.
Description of reference numerals: main body 1, U type groove 2, clamping nut 3, cylinder bar 4, opening 4-1, female thread 4-2, external screw thread 4-3, groove 5, annular ring for fixing 6, pitman 7.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is described further:
With reference to accompanying drawing: this Minimally Invasive Surgery is used pedicle screw; Comprise main body 1, the upper end of main body 1 is provided with the U type groove 2 that is fixedly connected rod 7, and U type groove 2 female threads are connected with clamping nut 3; Wherein the upper end of main body 1 is provided with outward extending cylinder bar 4; The both sides of cylinder bar 4 are provided with the opening 4-1 that is complementary with U type groove 2, and between cylinder bar 4 and main body 1, are provided with the groove of being convenient to fracture 5, and groove 5 is the cell body of V-structure.The outer end of cylinder bar 4 is with annular ring for fixing 6.The outer end of cylinder bar 4 is provided with external screw thread 4-3, and wherein annular ring for fixing 6 is threaded on the external screw thread 4-3.Cylinder bar 4 is structure as a whole with main body 1, and cylinder bar 4 is provided with female thread 4-2 with the inwall of main body 1 junction.
When Minimally Invasive Surgery, make the little otch of about 1-2cm; Behind location such as C type arm X line machine; Utilize expanded casing to expand successively; And do a pedicle screw passage with gag and pedicle of vertebral arch probe, and utilize locating rod C type arm X-ray perspective to confirm, can screw in the screw of this utility model after the processing such as hollow screw tap.
Cylinder bar 4 on this utility model is longer, exceeds skin, so do not need in addition installment work passage again, can insert pitman 7 down in direct-view, utilizes instrument distraction reduction fracture back screw-in clamping nut 3, and is simple and convenient.After the internal fixation installation, take out annular ring for fixing 6, cylinder bar 4 is fractureed at groove 5 places, take out cylinder bar 4, can accomplish the internal fixation step that resets of implementing operation.
Though this utility model is through illustrating and describe with reference to preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (5)
1. a Minimally Invasive Surgery is used pedicle screw; Comprise main body (1); The upper end of main body (1) is provided with the U type groove (2) that is fixedly connected rod (7), and U type groove (2) female thread is connected with clamping nut (3), it is characterized in that: the upper end of said main body (1) is provided with outward extending cylinder bar (4); The both sides of cylinder bar (4) are provided with the opening (4-1) that is complementary with U type groove (2), and between cylinder bar (4) and main body (1), are provided with the groove of being convenient to fracture (5).
2. Minimally Invasive Surgery according to claim 1 is used pedicle screw, it is characterized in that: the outer end of said cylinder bar (4) is with annular ring for fixing (6).
3. use pedicle screw according to the described Minimally Invasive Surgery of claim 2, it is characterized in that: the outer end of said cylinder bar (4) is provided with external screw thread (4-3), and said annular ring for fixing (6) is threaded on the external screw thread (4-3).
4. Minimally Invasive Surgery according to claim 1 is used pedicle screw, it is characterized in that: said groove (5) is the cell body of V-structure.
5. Minimally Invasive Surgery according to claim 1 is used pedicle screw, it is characterized in that: said cylinder bar (4) is structure as a whole with main body (1), and cylinder bar (4) is provided with female thread (4-2) with the inwall of main body (1) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201852147U CN202497225U (en) | 2012-04-27 | 2012-04-27 | Pedicle screw for minimally invasive surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201852147U CN202497225U (en) | 2012-04-27 | 2012-04-27 | Pedicle screw for minimally invasive surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202497225U true CN202497225U (en) | 2012-10-24 |
Family
ID=47033859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201852147U Expired - Lifetime CN202497225U (en) | 2012-04-27 | 2012-04-27 | Pedicle screw for minimally invasive surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202497225U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102920502A (en) * | 2012-11-09 | 2013-02-13 | 上海三友医疗器械有限公司 | Extension sheets of pedicle screw tail, expander, and tamper reset rod |
| CN105358080A (en) * | 2013-05-13 | 2016-02-24 | 尼奥医疗公司 | Orthopedic implant kit |
| CN106473783A (en) * | 2016-11-22 | 2017-03-08 | 常州华森医疗器械有限公司 | Pedicle of vertebral arch fixed system is with strutting piece |
| US12127776B2 (en) | 2019-07-02 | 2024-10-29 | Neo Medical Sa | Method, device, and system for preventing lateral stress on bone structures resulting from off-axis forces caused by screw driver and screw extender |
| US12414803B2 (en) | 2019-03-26 | 2025-09-16 | Neo Medical Sa | System for tightening an orthopedic set screw at two different torque levels |
-
2012
- 2012-04-27 CN CN2012201852147U patent/CN202497225U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102920502A (en) * | 2012-11-09 | 2013-02-13 | 上海三友医疗器械有限公司 | Extension sheets of pedicle screw tail, expander, and tamper reset rod |
| CN105358080A (en) * | 2013-05-13 | 2016-02-24 | 尼奥医疗公司 | Orthopedic implant kit |
| US10058355B2 (en) | 2013-05-13 | 2018-08-28 | Neo Medical S.A. | Orthopedic implant kit |
| CN105358080B (en) * | 2013-05-13 | 2019-08-23 | 尼奥医疗公司 | Orthopedic Implant Kit |
| US10888356B2 (en) | 2013-05-13 | 2021-01-12 | Neo Medical S.A. | Orthopedic implant kit |
| US12396760B2 (en) | 2013-05-13 | 2025-08-26 | Neo Medical S.A. | Orthopedic implant kit |
| CN106473783A (en) * | 2016-11-22 | 2017-03-08 | 常州华森医疗器械有限公司 | Pedicle of vertebral arch fixed system is with strutting piece |
| US12414803B2 (en) | 2019-03-26 | 2025-09-16 | Neo Medical Sa | System for tightening an orthopedic set screw at two different torque levels |
| US12127776B2 (en) | 2019-07-02 | 2024-10-29 | Neo Medical Sa | Method, device, and system for preventing lateral stress on bone structures resulting from off-axis forces caused by screw driver and screw extender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG Free format text: FORMER OWNER: HE DENGWEI Effective date: 20140417 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 323000 LISHUI, ZHEJIANG PROVINCE TO: 321000 JINHUA, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140417 Address after: 321000 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: Zhejiang Canwell Medical Co., Ltd. Address before: Room 1, building 501, Lianhua village, Liandu District, Zhejiang, Lishui 323000 Patentee before: He Dengwei |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: 321016 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: Zhejiang Ke Hui Medical Treatment Equipment Co., Ltd Address before: 321000 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee before: Zhejiang Canwell Medical Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |