CN106388927A - A clamp device for taking out screws in bones - Google Patents
A clamp device for taking out screws in bones Download PDFInfo
- Publication number
- CN106388927A CN106388927A CN201610837215.8A CN201610837215A CN106388927A CN 106388927 A CN106388927 A CN 106388927A CN 201610837215 A CN201610837215 A CN 201610837215A CN 106388927 A CN106388927 A CN 106388927A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- screw thread
- clamp
- inner bolt
- claw
- 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.)
- Withdrawn
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 60
- 210000000078 claw Anatomy 0.000 claims description 57
- 241001079814 Symphyotrichum pilosum Species 0.000 claims description 3
- 235000004224 Typha angustifolia Nutrition 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 3
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/2816—Pivots
-
- 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
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Ophthalmology & Optometry (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a clamp device for taking out screws in bones and belongs to the technical field of orthopedic medical instruments. The clamp device can take out multiple kinds of screws in bones rapidly and conveniently. A clamp consists of two clamp rods; the middle portions of the two clamp rods are connected via a rotating shaft; the outer side surfaces of the front portions and the rear portions of the two clamp rods are provided with threads; the clamp is externally sleeved by a sleeve; threads on the inner wall of the sleeve are engaged with the threads on the outer side surfaces of the front portions and the rear portions of the clamp; the front ends of the two clamp rods are provided with jaws corresponding to nuts of screws in bones or the inner side surfaces of the front ends of the clamp rods are provided with threads which can be connected with upper end threads of screws in bones. When the lower end of the sleeve is pressed against the surfaces of bones and the sleeve is rotated, the threads on the inner wall of the sleeve drive the clamp rods to move upward so that screws in bones can be taken out. The clamp device is simple in structure and convenient to use, can take out screws in bones rapidly, can prevent screw breakage or thread slipping, is suitable for all kinds of surgery for taking out screws in bones, and can shorten surgery time remarkably and reduce the pain of patients effectively.
Description
Technical field
The present invention relates to a kind of gripping mechanism that can take out multiple bone inner bolts, belong to orthopedic medical device technology neck
Domain.
Background technology
In bone surgery, it is operated using screw in a large number, wherein has lag screw, pressure screw, Schanz
Screw, locking nail, Positioning screw etc..Lag screw is used for fracture end and pressurizes；Pressure screw can by Interal fixation in bone, from
And between produce pressure；Schanz screw can be used for external fixing rack；Locking nail can be used for inner fixed stand；Positioning spiral shell
Follow closely for fixing the position of two sclerites and not pressurize.Above-mentioned screw often needs second operation to take out screw.Taking out spiral shell
During nail, because screw fixes tension, the in vivo reason such as overlong time in art, can cause to take generation broken screw during nail
Split or situations such as screw slide fastener, extend operating time, increased the misery of patient, make troubles to clinical position.Do not have at present
There is special device for fetching nail it would be highly desirable to solve.
Content of the invention
The technical problem to be solved is to provide a kind of gripping mechanism taking out bone inner bolt, this gripping mechanism
Various bone inner bolts can be taken out, it is to avoid the situation of screw extraction and slide fastener occurs, shorten operating time, reduce the pain of patient
Bitter.
Solve above-mentioned technical problem technical scheme be：
A kind of gripping mechanism taking out bone inner bolt, it includes clamp, sleeve, and clamp is made up of the claw beam of two bendings, claw beam
Front and rear parallel, middle part tilt be connected between front and rear, there is rotating shaft in the middle part centre position of two claw beams
It is connected, the lateral surface of the front and rear of two claw beams has screw thread, the screw thread of two claw beam lateral surface front and rears respectively
Match, the inner diameter of sleeve is in the distance between lateral surface during parallel position with two claw beams and matches, sleeve
Inwall has screw thread, and the screw thread of sleeve lining is matched with the screw thread of two claw beam lateral surfaces, and the front end of two claw beams has inwardly curved
Bent jaw, the front end of jaw is sharp, and two jaws embed the lower section of the head of a nail of bone inner bolt, the distance between two jaws with
The nail rod diameter of bone inner bolt matches.
The gripping mechanism of above-mentioned taking-up bone inner bolt, the rear portion of described two claw beams is separately installed with handle, handle and pincers
The rear end of bar is to be detachably connected, and the relative medial surface in two claw beam rear portions has the connecting rod of level respectively relatively, the two of connecting rod
End has the zigzag draw-in groove of inclination respectively, and the zigzag draw-in groove at two connecting rod two ends is meshed.
The gripping mechanism of above-mentioned taking-up bone inner bolt, push-rod hole is arranged at the top of described sleeve, and two push-rod holes are located at respectively
On the relative two sides of sleeve, two push-rod holes are located at one of sleeve section diametrically, and push rod is inserted in two push-rod holes, pushes away
The two ends of bar are located at the outside of sleeve two sides.
The gripping mechanism of above-mentioned taking-up bone inner bolt, the jaw of described two claw beam front ends is replaced by screw thread, two pincers
The medial surface of bar front end has screw thread, and the screw thread of two claw beam medial surfaces is matched with the screw thread of bone inner bolt
The gripping mechanism of above-mentioned taking-up bone inner bolt, it also beats bar, and it is T-shaped for beaing bar, and the push rod middle part of sleeve has
Screw, the lower end beaing the T-shaped middle straight-bar of bar has screw thread and the screw of push rod to match.
The invention has the beneficial effects as follows：
The gripping mechanism of the present invention includes clamp and sleeve two parts, and there is the nut phase of jaw and bone inner bolt the front end of clamp
Right, or clamp leading inside face has screw thread and the threaded upper ends of bone inner bolt to be connected, sleeve is enclosed within the outside of clamp, in sleeve
The screw thread of wall is meshed with the screw thread of the lateral surface of clamp front and rear, and the lower end of sleeve withstands on bone surface, rotational sleeve,
Screw thread on sleeve lining drives clamp to move up, and clamp drives bone inner bolt to move up simultaneously, takes out bone inner bolt.
Present configuration is simple, easy to use, quickly can take out bone inner bolt, screw extraction and slide fastener will not occur
Situation it is adaptable to various bone inner bolt taking-up operation, can significantly shorten operating time, effectively reduce the pain of patient
Hardship, is the reliable apparatus that orthopaedics takes out bone inner bolt, is worth popularization and application in industry.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the bone inner bolt schematic diagram that the present invention pulls out the head of a nail；
Fig. 3 is the bone inner bolt schematic diagram that the present invention pulls out the no head of a nail；
Fig. 4 is the structural representation beaing bar.
In figure mark is as follows：Clamp 1, sleeve 2, claw beam 3, rotating shaft 4, jaw 5, handle 6, connecting rod 7, draw-in groove 8, push rod 9, strike
Beat bar 10, bone inner bolt 11, the head of a nail 12, bearing pin 13, bone 14.
Specific embodiment
The present invention is made up of clamp 1 and sleeve 2 two parts, clamp 1 part include claw beam 3, rotating shaft 4, jaw 5, handle 6,
Connecting rod 7, sleeve 2 part includes sleeve 2, push rod 9, beats bar 10.
In figure shows, clamp 1 is made up of the claw beam 3 of two bendings, and the front and rear of claw beam 3 is parallel, and middle part tilts even
It is connected between front and rear, the middle part centre position of two claw beams 3 has rotating shaft 4 to be connected, the rear portion of two claw beams 3 is respectively
Handle 6 is installed, handle 6 is connected by bearing pin 13 with the rear end of claw beam 3.Clamped using handle 6 and just can pull down after two claw beams 3
Handle 6.
In figure shows, there are two kinds of structures the front end of two claw beams 3, a kind of structure be claw beam 3 front end have aduncate
Jaw 5, the front end of jaw 5 is sharp, and two jaws 5 are located at the lower section of the head of a nail 12 of bone inner bolt 11, between two jaws 5 away from
Match from the nail rod diameter with bone inner bolt 11, this structure is applied to the bone inner bolt 11 pulling out the head of a nail 12；Another kind of
Structure is that the jaw 5 of two claw beam 3 front ends is replaced by screw thread, and the medial surface of two claw beam 3 front ends has screw thread, two claw beams 3
The screw thread of medial surface is matched with the screw thread of bone inner bolt 11, and this structure is applied to pulls out the bone inner bolt not having the head of a nail 12
11.
In figure shows, the lateral surface of the front and rear of two claw beams 3 has screw thread respectively, and two claw beam 3 lateral surfaces are anterior
Match with the screw thread at rear portion.The inner diameter of sleeve 2 and two claw beams 3 are in the distance between lateral surface during parallel position
Match, the inwall of sleeve 2 has screw thread, and the screw thread of sleeve 2 inwall is matched with the screw thread of two claw beam 3 lateral surfaces.During use,
Sleeve 2 is enclosed within the outside of two claw beams 3, and the screw thread of sleeve 2 inwall is meshed with the screw thread of two claw beam 3 lateral surfaces, turning set
Cylinder 2 can drive two claw beams 3 to move up.
In figure shows, the relative medial surface in two claw beam 3 rear portions has the connecting rod 7 of level respectively relatively, the two ends of connecting rod 7
There is the zigzag draw-in groove 8 of inclination respectively, the zigzag draw-in groove 8 at two connecting rod 7 two ends is meshed.Connecting rod is used for two claw beams 3
Position fix.
In figure shows, push-rod hole is arranged at the top of sleeve 2, also has two holes on 1, and two push-rod holes are located at sleeve 2 phase respectively
To two sides on, at one of sleeve 2 section diametrically, push rod 9 is inserted in two push-rod holes for aperture on two push-rod holes and 1
In also cross the aperture on 1, the two ends of push rod 9 are located at the outside of sleeve 2 two sides.Can be more convenient laborsaving using push rod 9
Ground rotational sleeve 2.
In figure shows, it is T-shaped for beaing bar 10, and there is screw push rod 9 middle part of sleeve 2, and the T-shaped centre beaing bar 10 is straight
The lower end of bar has screw thread and the screw of push rod 9 to match.Operation occurs bone inner bolt 11 twist not get off situation when, you can
The T-shaped straight-bar beaing bar 10 is screwed in the screw in the middle of push rod 9, then beats bar 10 two ends cross bar using hammer, directly
Connect and strike by bone inner bolt 11.
The using method of the present invention is as follows：
First, clamp bone inner bolt 11 using clamp 1.For the bone inner bolt 11 having the head of a nail 12, using the claw beam 3 having jaw 5,
It is clamped in the head of a nail 12 with jaw 5, threaded claw beam 3 is used for the bone inner bolt 11 not having the head of a nail 12, with claw beam 3 inner side
Screw thread is connected with the screw thread of bone inner bolt 11 upper end.
Then, the zigzag draw-in groove 8 at two connecting rod 7 two ends is meshed, with connecting rod 7, the position of two claw beams 3 is fixed,
Take off the handle 6 at claw beam 3 rear portion.
Again sleeve 2 is enclosed within the outside of two claw beams 3, outside the screw thread of sleeve 2 inwall and two claw beam 3 upper and lowers
The screw thread in face is meshed, and the lower end of sleeve 2 withstands on bone surface, rotational sleeve 2, and the screw thread on sleeve 2 inwall drives two pincers
Bar 3 moves up, and the jaw 5 of two claw beams 3 drives the head of a nail 12 of bone inner bolt 11 to move up, or two claw beam 3 lower ends
The screw thread of medial surface drives bone inner bolt 11 upper end to move up, you can take out bone inner bolt 11.
In above process, it is possible to use push rod 9 is more convenient effortlessly rotational sleeve 2.
Twist situation about not getting off if there is bone inner bolt 11, the T-shaped straight-bar beaing bar 10 can be screwed in the middle of push rod 9
In screw, then beat bar 10 two ends cross bar using hammer, directly strike by bone inner bolt 11.
Claims (5)
1. a kind of take out bone inner bolt gripping mechanism it is characterised in that：It includes clamp（1）, sleeve（2）, clamp（1）By two
The claw beam of individual bending（3）Composition, claw beam（3）Front and rear parallel, middle part tilt be connected between front and rear, two
Claw beam（3）Middle part centre position on have rotating shaft（4）It is connected, two claw beams（3）The lateral surface of front and rear have respectively
Screw thread, two claw beams（3）The screw thread of lateral surface front and rear matches, sleeve（2）Inner diameter and two claw beams（3）Place
The distance between lateral surface when parallel position matches, sleeve（2）Inwall have screw thread, sleeve（2）The screw thread of inwall with
Two claw beams（3）The screw thread of lateral surface matches, two claw beams（3）Front end have aduncate jaw（5）, jaw（5）'s
Front end is sharp, two jaws（5）Embedded bone inner bolt（11）The head of a nail（12）Lower section, two jaws（5）The distance between with
Bone inner bolt（11）Nail rod diameter match.
2. according to claim 1 take out bone inner bolt gripping mechanism it is characterised in that：Described two claw beams（3）'s
Rear portion is separately installed with handle（6）, handle（6）With claw beam（3）Rear end be detachably connected, two claw beams（3）Rear portion is relatively
Medial surface on have the connecting rod of level respectively（7）Relatively, connecting rod（7）Two ends have the zigzag draw-in groove of inclination respectively（8）, two
Connecting rod（7）The zigzag draw-in groove at two ends（8）It is meshed.
3. according to claim 2 take out bone inner bolt gripping mechanism it is characterised in that：Described sleeve（2）Top
There is push-rod hole, two push-rod holes are located at sleeve respectively（2）On relative two sides, two push-rod holes are located at sleeve（2）Section
Article one, diametrically, push rod（9）It is inserted in two push-rod holes, push rod（9）Two ends be located at sleeve（2）The outside of two sides.
4. according to claim 3 take out bone inner bolt gripping mechanism it is characterised in that：Described two claw beams（3）Before
The jaw at end（5）Replaced by screw thread, two claw beams（3）The medial surface of front end has screw thread, two claw beams（3）The screw thread of medial surface
With bone inner bolt（11）Screw thread match.
5. according to claim 3 or 4 taking-up bone inner bolt gripping mechanism it is characterised in that：It also beats bar
（10）, beat bar（10）For T-shaped, sleeve（2）Push rod（9）There is screw middle part, beats bar（10）T-shaped middle straight-bar
There are screw thread and push rod in lower end（9）Screw match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837215.8A CN106388927A (en) | 2016-09-21 | 2016-09-21 | A clamp device for taking out screws in bones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837215.8A CN106388927A (en) | 2016-09-21 | 2016-09-21 | A clamp device for taking out screws in bones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106388927A true CN106388927A (en) | 2017-02-15 |
Family
ID=57997944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610837215.8A Withdrawn CN106388927A (en) | 2016-09-21 | 2016-09-21 | A clamp device for taking out screws in bones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106388927A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201239194Y (en) * | 2008-06-26 | 2009-05-20 | 杨兆军 | Device for fetching screw of orthopaedics |
| CN201286760Y (en) * | 2008-10-13 | 2009-08-12 | 孙玉东 | Broken nail remover for bone surgery |
| CN103737534A (en) * | 2013-12-19 | 2014-04-23 | 吴江邻苏精密机械有限公司 | Threaded nail puller |
| WO2014141857A1 (en) * | 2013-03-11 | 2014-09-18 | 多摩メディカル有限会社 | Medical screw, and removal jig for medical screw |
| CN206372120U (en) * | 2016-09-21 | 2017-08-04 | 河北医科大学第三医院 | A kind of gripping mechanism for taking out bone inner bolt |
-
2016
- 2016-09-21 CN CN201610837215.8A patent/CN106388927A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201239194Y (en) * | 2008-06-26 | 2009-05-20 | 杨兆军 | Device for fetching screw of orthopaedics |
| CN201286760Y (en) * | 2008-10-13 | 2009-08-12 | 孙玉东 | Broken nail remover for bone surgery |
| WO2014141857A1 (en) * | 2013-03-11 | 2014-09-18 | 多摩メディカル有限会社 | Medical screw, and removal jig for medical screw |
| CN103737534A (en) * | 2013-12-19 | 2014-04-23 | 吴江邻苏精密机械有限公司 | Threaded nail puller |
| CN206372120U (en) * | 2016-09-21 | 2017-08-04 | 河北医科大学第三医院 | A kind of gripping mechanism for taking out bone inner bolt |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170215 |
|
| WW01 | Invention patent application withdrawn after publication |