CN104434292A - Minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms - Google Patents
Minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms Download PDFInfo
- Publication number
- CN104434292A CN104434292A CN201410812940.0A CN201410812940A CN104434292A CN 104434292 A CN104434292 A CN 104434292A CN 201410812940 A CN201410812940 A CN 201410812940A CN 104434292 A CN104434292 A CN 104434292A
- Authority
- CN
- China
- Prior art keywords
- arm
- pedicle screw
- regulating arm
- arms
- percutaneous pedicle
- 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.)
- Pending
Links
- 230000001105 regulatory effect Effects 0.000 claims description 48
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- 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
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms, and relates to the technical field of medical instruments. The minimally invasive percutaneous pedicle screw is provided with a U-shaped screw seat, a screw body is arranged at the lower end of the U-shaped screw seat, and two guide arms at the upper end of the U-shaped screw seat are each provided with a guide extension arm. The minimally invasive percutaneous pedicle screw with the detachable tail length adjusting arms is characterized in that inserting grooves are formed in the outer sides of the guide extension arms in the longitudinal direction, and positioning grooves are formed in the inserting grooves; the adjusting arms are arranged above the guide extension arms, inserting arms which are in inserting fit with the inserting grooves are arranged at the lower ends of the adjusting arms, and positioning protrusions which are matched with the positioning grooves in the inserting grooves are arranged on the inserting arms. The minimally invasive percutaneous pedicle screw with the detachable tail length adjusting arms has the advantages of being simple in structure, convenient to use, free of damage to the peripheral tissue of a surgery channel, good in surgical effect, small in raw material using amount, low in manufacturing cost and using cost and the like.
Description
Technical field
The present invention relates to technical field of medical instruments, say it is that a kind of structure is simple, easy to use in detail, in art, not damaged is organized to operation passageway perimeter, save the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band of operation cost.
Background technology
We know, the structure of existing pedicle screw is provided with staple seat, staple seat bottom is provided with rivet nut, two U-shaped arms of staple seat upper end are respectively equipped with guiding extension arm, the regulating arm of adjustment length when guiding extension arm upper end is provided with more piece for using, the junction of guiding extension arm and staple seat, junction between regulating arm and the guiding junction of extension arm and adjacent regulating arm is provided with snap slot, in use procedure, after pedicle screw being inserted Minimally Invasive Surgery passage, according to the age of patient, the personal features such as build are determined to fracture the joint number of regulating arm of Minimally Invasive Surgery access incisions outside, to adapt to operation.Existing this pedicle screw, the inconvenience that fractures of regulating arm in operation process, in snap-off process and the easily tissue of trauma surgery access incisions periphery; Easily there is deviation in the position, the place of fractureing of regulating arm, often occurring when facts have proved operation the situation that the joint number fractureing regulating arm saves than the joint number many that plan fractures regulating arm affects surgical effect; Regulating arm can not be reused, and use cost is high, increases medical expense.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, there is provided a kind of structure simple, easy to use, not damaged is organized to operation access incisions periphery, surgical effect is good, manufactures, the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band that use cost is cheap.
The present invention solves the technical scheme that above-mentioned the deficiencies in the prior art adopt:
A kind of micro-wound percutaneous pedicle screw with the long regulating arm of detachable tail, be provided with staple seat, staple seat bottom is provided with rivet nut, two leading arms of staple seat upper end are respectively equipped with guiding extension arm, it is characterized in that longitudinally being provided with inserting groove outside guiding extension arm, in inserting groove, be provided with detent; Be provided with regulating arm above guiding extension arm, the lower end of regulating arm is provided with the grafting arm coordinated with inserting groove grafting, and grafting arm is provided with the positioning convex matched with the detent in inserting groove.
Detent described in the present invention is arranged in grafting dovetail groove bottom, and detent is circular groove, and described positioning convex is the arc-shaped convex matched with circular groove.
The cross section of the guiding extension arm described in the present invention and regulating arm is and the leading arm cross section curvature of staple seat upper end, measure-alike arc.
The longitudinal length of the regulating arm described in the present invention is divided into 1cm, 2cm, 3cm, 4cm, 5cm five kinds of sizes.
Rivet nut described in the present invention is fixedly connected with staple seat bottom or through bulb hinged.
The present invention in use, the longitudinal length of adjustment in use arm is determined according to the personal feature such as age, build of patient, insert in the grafting dovetail groove outside guiding extension arm after selecting the regulating arm of applicable length, by the grafting arm of its lower end, positioning convex on grafting arm embeds in the detent in grafting dovetail groove, regulating arm and guiding extension arm is connected and fixed.When occurring that regulating arm length is not suitable for, upwards a little firmly carrying regulating arm, by regulating arm under the dismounting of guiding extension arm, can then reinstall applicable regulating arm.Structure of the present invention is simple, and easy to use, to perienchyma's not damaged of operation path, surgical effect is good.Regulating arm sterilization after reusable, micro-wound percutaneous vertebral pedicle bolt structure is simple, raw material dosage is few, manufacturing cost and use cost cheap.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 be in the present invention staple seat and rivet nut combine after structural representation.
Fig. 3 is the structural representation of regulating arm and grafting arm in the present invention.
Fig. 4 is stereo decomposing structural representation of the present invention.
Detailed description of the invention
The micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band as Figure 1-4, is provided with staple seat 2, and staple seat 2 bottom is provided with rivet nut 1, and rivet nut 1 is fixedly connected with staple seat 2 bottom or through bulb hinged; Two leading arms of staple seat 2 upper end are respectively equipped with guiding extension arm 4, the junction of guiding extension arm and staple seat is provided with snap slot 3; Said structure is same as the prior art, repeats no more.The invention is characterized in and be longitudinally provided with grafting dovetail groove 5 outside guiding extension arm 4, in grafting dovetail groove 5, be provided with detent 6.Be provided with regulating arm 7 above guiding extension arm 4, the lower end of regulating arm 7 is provided with the grafting arm 8 coordinated with the grafting of grafting dovetail groove, and grafting arm 8 is provided with the positioning convex 9 matched with the detent 6 in grafting dovetail groove.Detent 6 is arranged in grafting dovetail groove bottom, and detent is circular groove, and positioning convex is the arc-shaped convex matched with circular groove.The cross section of the guiding extension arm described in the present invention and regulating arm is and the leading arm cross section curvature of staple seat upper end, measure-alike arc; Regulating arm is arranged on after on guiding extension arm, makes staple seat form the longer U-shaped body of leading arm.The longitudinal length of the regulating arm described in the present invention is divided into 1cm, 2cm, 3cm, 4cm, 5cm five kinds of sizes, selects the regulating arm of different size during operation according to individual factors such as the age of patient, builds.
The present invention in use, the longitudinal length of adjustment in use arm is determined according to the personal feature such as age, build of patient, insert in the grafting dovetail groove outside guiding extension arm after selecting the regulating arm of applicable length, by the grafting arm of its lower end, positioning convex on grafting arm embeds in the detent in grafting dovetail groove, regulating arm and guiding extension arm is connected and fixed.When occurring that regulating arm length is not suitable for, upwards a little firmly carrying regulating arm, by regulating arm under the dismounting of guiding extension arm, can then reinstall applicable regulating arm.Structure of the present invention is simple, and easy to use, to perienchyma's not damaged of operation path, surgical effect is good.Regulating arm sterilization after reusable, micro-wound percutaneous vertebral pedicle bolt structure is simple, raw material dosage is few, manufacturing cost and use cost cheap.
Claims (5)
1. the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band, be provided with staple seat, staple seat bottom is provided with rivet nut, two leading arms of staple seat upper end are respectively equipped with guiding extension arm, it is characterized in that longitudinally being provided with inserting groove outside guiding extension arm, in inserting groove, be provided with detent; Be provided with regulating arm above guiding extension arm, the lower end of regulating arm is provided with the grafting arm coordinated with inserting groove grafting, and grafting arm is provided with the positioning convex matched with the detent in inserting groove.
2. the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band according to claim 1, it is characterized in that described detent is arranged in grafting dovetail groove bottom, detent is circular groove, and described positioning convex is the arc-shaped convex matched with circular groove.
3. the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band according to claim 1, is characterized in that the cross section of described guiding extension arm and regulating arm is and the leading arm cross section curvature of staple seat upper end, measure-alike arc.
4. the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band according to claim 1, is characterized in that the longitudinal length of described regulating arm is divided into 1cm, 2cm, 3cm, 4cm, 5cm five kinds of sizes.
5. the micro-wound percutaneous pedicle screw of the long regulating arm of the detachable tail of band according to claim 1, is characterized in that described rivet nut is fixedly connected with staple seat bottom or through bulb hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812940.0A CN104434292A (en) | 2014-12-24 | 2014-12-24 | Minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812940.0A CN104434292A (en) | 2014-12-24 | 2014-12-24 | Minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104434292A true CN104434292A (en) | 2015-03-25 |
Family
ID=52881579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410812940.0A Pending CN104434292A (en) | 2014-12-24 | 2014-12-24 | Minimally invasive percutaneous pedicle screw with detachable tail length adjusting arms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104434292A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111631787A (en) * | 2020-04-16 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Long-arm nail guiding device and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090228052A1 (en) * | 2006-11-20 | 2009-09-10 | Depuy Spine, Inc. | Break-off screw extensions |
| 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 |
| CN103179912A (en) * | 2010-10-27 | 2013-06-26 | 华沙整形外科股份有限公司 | Low profile extension attachments for bone anchors |
| CN203107265U (en) * | 2013-03-28 | 2013-08-07 | 周道裕 | Vertebral pedicle internal fixing screw and vertebral pedicle internal fixing system |
| CN103908331A (en) * | 2014-04-02 | 2014-07-09 | 山东冠龙医疗用品有限公司 | Pedicle screw for minimally invasive surgery |
| CN204337029U (en) * | 2014-12-24 | 2015-05-20 | 山东威高骨科材料股份有限公司 | A kind of micro-wound percutaneous pedicle screw with the long regulating arm of detachable tail |
-
2014
- 2014-12-24 CN CN201410812940.0A patent/CN104434292A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090228052A1 (en) * | 2006-11-20 | 2009-09-10 | Depuy Spine, Inc. | Break-off screw extensions |
| CN103179912A (en) * | 2010-10-27 | 2013-06-26 | 华沙整形外科股份有限公司 | Low profile extension attachments for bone anchors |
| 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 |
| CN203107265U (en) * | 2013-03-28 | 2013-08-07 | 周道裕 | Vertebral pedicle internal fixing screw and vertebral pedicle internal fixing system |
| CN103908331A (en) * | 2014-04-02 | 2014-07-09 | 山东冠龙医疗用品有限公司 | Pedicle screw for minimally invasive surgery |
| CN204337029U (en) * | 2014-12-24 | 2015-05-20 | 山东威高骨科材料股份有限公司 | A kind of micro-wound percutaneous pedicle screw with the long regulating arm of detachable tail |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111631787A (en) * | 2020-04-16 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Long-arm nail guiding device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |