CN2772460Y - Hollow screw drawing-out device - Google Patents
Hollow screw drawing-out device Download PDFInfo
- Publication number
- CN2772460Y CN2772460Y CN 200520008986 CN200520008986U CN2772460Y CN 2772460 Y CN2772460 Y CN 2772460Y CN 200520008986 CN200520008986 CN 200520008986 CN 200520008986 U CN200520008986 U CN 200520008986U CN 2772460 Y CN2772460 Y CN 2772460Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- dwang
- hollow screw
- claw type
- clamping head
- 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 - Fee Related
Links
Images
Abstract
The utility model relates to a hollow screw drawing-out device which belongs to the technical field of a surgery medical appliance. The utility model provides the hollow screw drawing-out device which can be used for quickly conveniently taking out a hollow screw without injury after fracture is healed up. The front end of a rotating rod is an inner hexagon spanner, and a clamping device which is composed of a sleeve cylinder and an expanding sleeve type clamping head is added to the utility model. The inner diameter of the sleeve cylinder is matched with the outer diameter of the rotating rod, the front of the sleeve cylinder is in a horn mouth shape and inner screw threads are arranged behind the horn mouth. The back part of the sleeve cylinder is sheathed on the rotating rod and has rotatable connection with the rotating rod. The front part of the expanding sleeve type clamping head is a claw-shaped clamping head, and the outer diameter of the claw-shaped clamping head is matched with the inner diameter of the horn mouth of the sleeve cylinder. The front end opening of the claw-shaped clamping head is matched with the outer diameter of a screw nut of the hollow screw, and the inner hexagon spanner at the front end of the rotating rod is positioned at the inner side of the front end face of the claw-shaped clamping head. The clam-shaped clamping head is divided into three to ten petals along the circumference, and gap exists among each petal. The back part of the expanding sleeve type clamping head is a screw rod, and screw threads of the screw rod are matched with the inner screw threads. The utility model can complete the puzzle of conveniently and quickly taking out the hollow screw.
Description
Technical field
This utility model relates to a kind of medical surgery hollow screw and plays spike devices, belongs to the surgical medical equipment technical field.
Background technology
Fracture of femoral neck often takes place in the old people, and general Therapeutic Method all needs to implant hollow screw and positions fixingly, takes out hollow screw again after the fracture healing.When taking out hollow screw; the inner hexagonal hole that uses special-purpose inner hexagon spanner to insert the hollow screw head outwards screws out; and it is bigger owing to the spongy bone hole in the femoral head in practical operation; hollow screw when screwing out through regular meeting's slide fastener; can not outwards withdraw from, must outwards extract with instruments such as mosquito forceps or common hand vice.But because the nut of hollow screw is a circular arc, its edge contacts slick and sly with bone surface, jaw is difficult to clamp, operator must remove the cutter of the sclerotin around the nut, just can make jaw clamp nut outwards extracts, when this method can cause new wound, operating cost to patient's sclerotin, effort, make surgical staff feel very thorny.Therefore, medical worker and patient wish to develop a kind of novel hollow screw device for fetching nail, solve a difficult problem of taking out hollow screw after the union of fracture.
Summary of the invention
Problem to be solved in the utility model provides a kind of novel hollow screw nail puller that can fast, convenient, no wound take out hollow screw after union of fracture.
The technical scheme that solves the problems of the technologies described above is:
A kind of hollow screw nail puller, it has a dwang, there is turning handle at the rear portion of dwang, the front end of dwang is an inner hexagon spanner, its improvements are, it has also increased clamping device, clamping device is made up of sleeve and ringfeder formula chuck, sleeve is a hollow cylinder, the external diameter of its internal diameter and dwang is complementary, and telescopic front end is a bell mouth shape, and there is female thread at bell-mouthed rear, telescopic rear sleeve is on dwang, with dwang for being rotationally connected, the front portion of ringfeder formula chuck is the claw type chuck, its external diameter and telescopic bell-mouthed internal diameter are complementary, the external diameter of the front opening of claw type chuck and the nut of hollow screw is complementary, the inner hexagon spanner of dwang front end is positioned at the inboard of claw type chuck front end face, and the claw type chuck is divided into the 3-10 lobe along circumference, and is gapped between each lobe, the rear portion of ringfeder formula chuck is a screw rod, and its screw thread and telescopic female thread are complementary.
Above-mentioned hollow screw nail puller, described sleeve is with after dwang is connected, and the distance of the front end face of inner hexagon spanner and claw type chuck front end face is 0.5-4mm.
Above-mentioned hollow screw nail puller, described sleeve and dwang ways of connecting are at dwang upper edge circumference locating slot to be arranged, and have alignment pin to embed in the locating slot on the sleeve.
Above-mentioned hollow screw nail puller, the acutangulate angle [alpha] in the front end medial wall of described claw type chuck and claw type chuck plane is 10 °-80 °.
Above-mentioned hollow screw nail puller, the gap between described each lobe of claw type chuck is 0.2-2mm.
Adopt this hollow screw nail puller, can rotate hollow screw with the inner hexagon spanner of dwang front end, with its back-out, and the while rotational sleeve, the claw type chuck is inwardly shunk, clamp the nut of hollow screw, hollow screw simultaneously can be rotated with dwang, one side is extracted, and uses this hollow screw nail puller can finish a difficult problem of taking out hollow screw quickly and easily, is subjected to medical worker and patient's welcome.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the side view of Fig. 1.
Labelling is as follows among the figure:
The specific embodiment
Referring to accompanying drawing, this utility model is made up of dwang 1 and clamping device two parts.
The front portion of dwang 1 is an inner hexagon spanner 3, and there is turning handle 2 at the rear portion.
Clamping device comprises sleeve 4 and ringfeder formula chuck.Sleeve 4 is a hollow cylinder, be enclosed within the outside of dwang 1, dwang 1 upper edge circumference has locating slot 9, there is alignment pin 10 to embed locating slot interior 9 on the sleeve 4, sleeve 4 can be rotated along dwang 1, and can not move forward and backward, for rotational sleeve 4 easily, can installing sleeve handle 11 in the outside of sleeve 4.The front end of sleeve 4 is a bell mouth shape, and there is female thread 6 at the rear of horn mouth 5.Ringfeder formula chuck is made up of claw type chuck 7 and screw rod 8, claw type chuck 7 is in the front portion of ringfeder formula chuck, the internal diameter of the horn mouth 5 of its external diameter and sleeve 4 is complementary, the external diameter of the front opening of claw type chuck 7 and the nut of hollow screw is complementary, the rear portion of ringfeder formula chuck is a screw rod 8, and the female thread 6 of its screw thread and sleeve 4 is complementary.Claw type chuck 7 is divided into the 6-8 lobe along circumference, and the gap of 0.2-2mm is arranged between each lobe, and the acutangulate angle [alpha] in the front end medial wall of claw type chuck and claw type chuck plane is 10 °-80 °, is preferably 15 °-60 °.The length of entire sleeve 4 should be that the inner hexagon spanner 3 of dwang 1 front end is positioned at the inboard of claw type chuck 7 front end faces after sleeve 4 and dwang 1 are located, and the distance of the front end face of the front end face of inner hexagon spanner 3 and claw type chuck 7 is 0.5-2mm.
During assembling, sleeve 4 is enclosed within on the dwang 1, with alignment pin 10 and locating slot 9 location, the front end of ringfeder formula chuck from sleeve 4 is inserted in the horn mouth 5 of sleeve 4 backward, rotation ringfeder formula chuck screws in the female thread of sleeve 4 screw rod 8.
During use, the inner hexagonal hole of the inner hexagon spanner 3 of dwang 1 being aimed at the hollow screw nut inserts, turnbarrel 4 counterclockwise then, claw type chuck 7 is inwardly shunk, the acute angle of chuck front end face embeds the nut of hollow screw and the slit between the bone, inwardly clamps the nut of hollow screw, and operator's one side is pulled outwardly dwang, one side is rotated, and hollow screw can be clamped to extract.
Claims (5)
1. hollow screw nail puller, it has a dwang [1], there is turning handle [2] at the rear portion of dwang [1], the front end of dwang [1] is inner hexagon spanner [3], it is characterized in that: it also has additional clamping device, clamping device is made up of sleeve [4] and ringfeder formula chuck, sleeve [4] is a hollow cylinder, the external diameter of its internal diameter and dwang [1] is complementary, the front end of sleeve [4] is a bell mouth shape, there is female thread [6] at the rear of horn mouth [5], the rear sleeve of sleeve [4] on dwang [1], with dwang [1] for being rotatably connected, the front portion of ringfeder formula chuck is claw type chuck [7], the internal diameter of the horn mouth [5] of its external diameter and sleeve [4] is complementary, and the external diameter of the front opening of claw type chuck [7] and the nut of hollow screw is complementary, and the inner hexagon spanner [3] of dwang [1] front end is positioned at the inboard of claw type chuck [7] front end face, claw type chuck [7] is divided into the 3-10 lobe along circumference, gapped between each lobe, the rear portion of ringfeder formula chuck is screw rod [8], and the female thread [6] of its screw thread and sleeve [4] is complementary.
2. hollow screw nail puller according to claim 1 is characterized in that: described sleeve [4] is with after dwang [1] is connected, and the distance of the front end face of inner hexagon spanner [3] and claw type chuck [7] front end face is 0.5-4mm.
3. hollow screw nail puller according to claim 2 is characterized in that: described sleeve [4] is at dwang [1] upper edge circumference locating slot [9] to be arranged with dwang [1] ways of connecting, has alignment pin [10] to embed in the locating slot [9] on the sleeve [4].
4. hollow screw nail puller according to claim 3 is characterized in that: the acutangulate angle [alpha] in the front end medial wall of described claw type chuck [7] and claw type chuck plane is 10 °-80 °.
5. hollow screw nail puller according to claim 4 is characterized in that: the gap between described each lobe of claw type chuck is 0.2-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520008986 CN2772460Y (en) | 2005-03-25 | 2005-03-25 | Hollow screw drawing-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520008986 CN2772460Y (en) | 2005-03-25 | 2005-03-25 | Hollow screw drawing-out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772460Y true CN2772460Y (en) | 2006-04-19 |
Family
ID=36707714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520008986 Expired - Fee Related CN2772460Y (en) | 2005-03-25 | 2005-03-25 | Hollow screw drawing-out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2772460Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240224A (en) * | 2011-05-19 | 2011-11-16 | 黄长明 | Bone nail and tool using same |
| CN104434295A (en) * | 2014-11-07 | 2015-03-25 | 中国人民解放军第四军医大学 | Special screw driver for taking orthopaedic internal fixed slip screw |
| CN105434033A (en) * | 2014-09-30 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Nail holding device |
| CN105662489A (en) * | 2016-02-19 | 2016-06-15 | 北京迈迪顶峰医疗科技有限公司 | Poking-assisting pen |
| CN105686876A (en) * | 2016-03-29 | 2016-06-22 | 李现军 | Screw taking device used in department of orthopaedics |
| CN106890023A (en) * | 2017-03-29 | 2017-06-27 | 中国人民解放军第四军医大学 | It is a kind of to be suitable to the spinal bone screw pitman extractor of small otch |
| CN106901826A (en) * | 2017-02-24 | 2017-06-30 | 中山弗雷德机械有限公司 | A kind of orthopaedics locating steel needle withdrawing device |
| CN108245241A (en) * | 2016-12-28 | 2018-07-06 | 南京森盛医疗设备有限公司 | A kind of electrode coagulation apparatus |
| CN108888332A (en) * | 2018-05-11 | 2018-11-27 | 尹建新 | A kind of nail taking out apparatus in orthopaedics |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
-
2005
- 2005-03-25 CN CN 200520008986 patent/CN2772460Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240224A (en) * | 2011-05-19 | 2011-11-16 | 黄长明 | Bone nail and tool using same |
| CN105434033B (en) * | 2014-09-30 | 2019-03-08 | 苏州微创脊柱创伤医疗科技有限公司 | One kind holding spike devices |
| CN105434033A (en) * | 2014-09-30 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Nail holding device |
| CN104434295A (en) * | 2014-11-07 | 2015-03-25 | 中国人民解放军第四军医大学 | Special screw driver for taking orthopaedic internal fixed slip screw |
| CN105662489A (en) * | 2016-02-19 | 2016-06-15 | 北京迈迪顶峰医疗科技有限公司 | Poking-assisting pen |
| CN105686876A (en) * | 2016-03-29 | 2016-06-22 | 李现军 | Screw taking device used in department of orthopaedics |
| CN108245241A (en) * | 2016-12-28 | 2018-07-06 | 南京森盛医疗设备有限公司 | A kind of electrode coagulation apparatus |
| CN106901826A (en) * | 2017-02-24 | 2017-06-30 | 中山弗雷德机械有限公司 | A kind of orthopaedics locating steel needle withdrawing device |
| CN106890023A (en) * | 2017-03-29 | 2017-06-27 | 中国人民解放军第四军医大学 | It is a kind of to be suitable to the spinal bone screw pitman extractor of small otch |
| CN106890023B (en) * | 2017-03-29 | 2019-08-27 | 中国人民解放军第四军医大学 | A kind of spinal bone screw pitman extractor suitable for small notch |
| CN108888332A (en) * | 2018-05-11 | 2018-11-27 | 尹建新 | A kind of nail taking out apparatus in orthopaedics |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
| CN110236662B (en) * | 2018-12-27 | 2022-07-15 | 丽水市人民医院 | Fracture restorer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2772460Y (en) | Hollow screw drawing-out device | |
| AU2007335226B2 (en) | A medical instrument | |
| US9974567B2 (en) | General uterine manipulator and system | |
| US20120123428A1 (en) | Repositioning Forceps With A Drilling Aid | |
| CN102357042B (en) | Multifunctional surgical clamp for endoscope | |
| CA2489340A1 (en) | Hernia mesh tacks | |
| CN108095805B (en) | Abdominal-cavity minimal-invasion surgery fixture | |
| EP2853209B1 (en) | Flexible cannula and obturator | |
| JP2003265492A (en) | Operation tool for implant | |
| CN206355086U (en) | Draw tissue fixator in a kind of art | |
| CN204931828U (en) | A kind of way of escape spinal fixation system | |
| CN1765335A (en) | Multifunctional device for screwing out bone nail | |
| CN205379357U (en) | Novel bolt taking -out forceps for general surgeries | |
| CN2772459Y (en) | Splier style hollow screw drawing-out device | |
| CN208974061U (en) | A kind of fixing clamp for orthopedics department | |
| CN209032590U (en) | Easily take out screw device | |
| CN210019717U (en) | Dental forceps with forceps mouth with adjustable angle for stomatologists | |
| CN203539408U (en) | Acetabular cup grinding file connector | |
| CN202515720U (en) | Calculus removing pincers for laparoscopic common bile duct | |
| CN214966527U (en) | Kirschner wire wrench | |
| CN213525450U (en) | Power interface device of bipolar coagulation forceps for preventing loosening and power failure | |
| CN2796664Y (en) | Nipper pliers having lock groove | |
| CN213189953U (en) | Thoracoscope rib shear | |
| CN214017705U (en) | Femoral neck bone fracture punching positioner | |
| CN213993702U (en) | Novel bone holding forceps with Kirschner wire hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |