CN102078216B - Bone screw screwdriver for operation - Google Patents
Bone screw screwdriver for operation Download PDFInfo
- Publication number
- CN102078216B CN102078216B CN2011100538260A CN201110053826A CN102078216B CN 102078216 B CN102078216 B CN 102078216B CN 2011100538260 A CN2011100538260 A CN 2011100538260A CN 201110053826 A CN201110053826 A CN 201110053826A CN 102078216 B CN102078216 B CN 102078216B
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- China
- Prior art keywords
- teeth
- handle
- gear wheel
- screwdriver
- gear
- 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
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- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical apparatus and instruments, in particular to a bone screw screwdriver for an operation. The bone screw screwdriver comprises a handle and a screwdriver body, wherein the rear end of the screwdriver is connected with the handle; the front end of the screwdriver is provided with two teeth; the teeth are made of stainless steel and are L-shaped; the toothcusp of the teeth are opposite, so that the toothcusp can be clamped into holes on a special bone screw cap, thus being convenient to screw out a bone screw; and the handle is internally provided with a direction-turning groove, so that the bone screw screwdriver can realize positive rotation or reverse rotation. Due to adopting the above structure, the bone screw screwdriver is novel in structure and convenient to assemble and disassemble, is fast, can relief pains of patients and the like.
Description
Technical field
The present invention relates to technical field of medical instruments, the matching used special-purpose screwdriver of specifically a kind of bone screw.
Background technology
Orthopaedics is often used locking steel plate and lock screw clinically, and lock screw is made up of the nail body and the head of a nail, and the nail body is carefully lacked usually, and the head of a nail is thin; Groove on the head of a nail is more shallow, and when taking out locking steel plate, the lock screw that needs will be fixed on the locking steel plate is taken out with screwdriver; In getting the process of nail, some lock screw nail is longer owing to the internal fixation time, perhaps because the orthopedist is firmly excessive when with screwdriver the lock screw nail being screwed; Thereby it is much clinically to cause getting the nail difficulty, and this is not had better method clinically yet, has the industrial drill bit of use that the screw head of a nail is bored; Take off steel plate, reuse is hollow to drill through screw, and also the flat type high-speed steel of useful industry is squeezed into screw head of a nail internal rotation and taken out; These methods are bigger to patient trauma, up to the present, also do not have a kind of specific purpose tool of getting screw clinically.
Summary of the invention
The objective of the invention is to solve the deficiency of above-mentioned prior art, provide a kind of novel structure, easy for installation, convenient disassembly, operation quick, that reduce less patient suffering to use the bone screw screwdriver.
The technical solution adopted for the present invention to solve the technical problems is:
The bone screw screwdriver is used in a kind of operation, comprises handle and screwdriver body, and screwdriver body rear end is connected with handle, it is characterized in that screwdriver body front end is provided with two teeth; Teeth adopt stainless steel to process, and teeth are L-shaped, and the teeth cusp is relative; So that teeth stick in the hole on the special-purpose bone screw head of a nail, be convenient to screw out bone screw, be provided with the rotation direction tank in the handle; Be provided with the rotation direction device in the rotation direction tank, the rotation direction device is by revolving axle, gear, gear wheel, place kick, spring, location-plate and pulling pin and form, the gear wheel semicircular in shape; Be respectively equipped with forward teeth and reverse teeth on gear wheel one side plane, correspondence is provided with left detent and right detent on the opposite side arcwall face, revolves axle and is provided with gear; Revolve axle one end and be connected with the screwdriver bulk phase, the other end is connected with handle through location-plate, revolves axle one side and is provided with gear wheel; Gear wheel one end is hinged through bearing pin and location-plate, and the other end is fixedly connected with pulling pin through bearing pin, and gear wheel is meshed with gear through forward teeth or reverse teeth; Rotation direction tank side is provided with locating hole, is provided with spring and place kick in the locating hole, and place kick one end is inconsistent through spring and handle; The other end and left detent or right detent are inconsistent, are rotated in the forward or reverse rotation so that the present invention can do, and make things convenient for the doctor to rotate bone screw.
The present invention is owing to adopt said structure, have novel structure, easy for installation, convenient disassembly, quick, reduce advantage such as less patient suffering.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is the structural representation of the cutaway view of A-A among Fig. 2.
Reference numeral: handle 1, screwdriver body 2, teeth 3, rotation direction tank 4, rotation direction device 5, revolve axle 6, gear 7, gear wheel 8, place kick 9, spring 10, location-plate 11, pull pin 12, forward teeth 13, reverse teeth 14, left detent 15, right detent 16, locating hole 17, bearing pin 18.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is further specified:
Shown in accompanying drawing, the bone screw screwdriver is used in a kind of operation, comprises handle 1 and screwdriver body 2; Screwdriver body 2 rear ends are connected with handle 1, it is characterized in that screwdriver body 2 front ends are provided with two teeth 3, and teeth 3 adopt stainless steel to process; Teeth 3 are L-shaped, and teeth 3 cusps are relative, so that teeth 3 stick in the hole on the special-purpose bone screw head of a nail; Be convenient to screw out bone screw, be provided with rotation direction tank 4 in the handle 1, be provided with rotation direction device 5 in the rotation direction tank 4; Rotation direction device 5 is by revolving axle 6, gear 7, gear wheel 8, place kick 9, spring 10, location-plate 11 and pulling pin 12 and form, and gear wheel 8 semicirculars in shape are respectively equipped with forward teeth 13 and reverse teeth 14 on gear wheel 8 one side planes; Correspondence is provided with left detent 15 and right detent 16 on the opposite side arcwall face, revolves axle 6 and is provided with gear 7, revolves axle 6 one ends and is connected with screwdriver body 2; The other end is connected with handle 1 through location-plate 11, revolves axle 6 one sides and is provided with gear wheel 8, and gear wheel 8 one ends are hinged through bearing pin 18 and location-plate 11; The other end is fixedly connected with pulling pin 12 through bearing pin 15, and gear wheel 8 is meshed with gear 7 through forward teeth 13 or reverse teeth 14, and rotation direction tank 4 sides are provided with locating hole 17; Be provided with spring 10 and place kick 9 in the locating hole 17, place kick 9 one ends are inconsistent through spring 10 and handle 1, and the other end and left detent 15 or right detent 16 are inconsistent; Be rotated in the forward or reverse rotation so that the present invention can do, make things convenient for the doctor to rotate bone screw.
When the present invention needs with bone screw fixedly in operation; To pull pin 12 pulls left and pulls; Handle 1 inboard place kick 9 promptly sticks into the right detent 16 of gear wheel, the forward teeth 13 and gear 7 positive engagement of gear wheel 8, and hand-held handle 1 sticks into the teeth 3 of screwdriver body 2 front ends in the hole on the special-purpose bone screw head of a nail; Make gear wheel under the slippage that turns clockwise repeatedly of handle, counterclockwise snap action, drive screwdriver body precession bone screw.
When needs are removed bone screw; The pin 12 of pulling on the handle 1 is pulled to the right; Handle 1 inboard place kick 9 promptly sticks into the left detent 15 of gear wheel, and the reverse teeth 14 and the gear 7 of gear wheel 8 oppositely mesh, and hand-held handle 1 sticks into the teeth 3 of screwdriver body 2 front ends in the hole on the special-purpose bone screw head of a nail; Gear wheel drives the screwdriver body and screws out bone screw under the slippage counterclockwise repeatedly of handle, clockwise snap action.
The present invention is owing to adopt said structure, have novel structure, easy for installation, convenient disassembly, quick, reduce advantage such as less patient suffering.
Claims (1)
1. the bone screw screwdriver is used in an operation, comprises handle and screwdriver body, and screwdriver body rear end is connected with handle, it is characterized in that screwdriver body front end is provided with two teeth; Teeth adopt stainless steel to process, and the teeth cusp is relative, is provided with the rotation direction tank in the handle; Be provided with the rotation direction device in the rotation direction tank, the rotation direction device is by revolving axle, gear, gear wheel, place kick, spring, location-plate and pulling pin and form, the gear wheel semicircular in shape; Be respectively equipped with forward teeth and reverse teeth on gear wheel one side plane, correspondence is provided with left detent and right detent on the opposite side arcwall face, revolves axle and is provided with gear; Revolve axle one end and be connected with the screwdriver bulk phase, the other end is connected with handle through location-plate, revolves axle one side and is provided with gear wheel; Gear wheel one end is hinged through bearing pin and location-plate, and the other end is fixedly connected with pulling pin through bearing pin, and gear wheel is meshed with gear through forward teeth or reverse teeth; Rotation direction tank side is provided with locating hole, is provided with spring and place kick in the locating hole, and place kick one end is inconsistent through spring and handle; The other end and left detent or right detent are inconsistent, stir and pull the rotation of pin drive gear wheel, make the inboard place kick of handle stick in the detent of gear wheel; Thereby the forward teeth of gear wheel or reverse teeth engages with gear, rotary handle, and handle is interior, and to revolve a drive screwdriver body counterclockwise or turn clockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100538260A CN102078216B (en) | 2011-03-07 | 2011-03-07 | Bone screw screwdriver for operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100538260A CN102078216B (en) | 2011-03-07 | 2011-03-07 | Bone screw screwdriver for operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102078216A CN102078216A (en) | 2011-06-01 |
| CN102078216B true CN102078216B (en) | 2012-03-14 |
Family
ID=44084549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100538260A Expired - Fee Related CN102078216B (en) | 2011-03-07 | 2011-03-07 | Bone screw screwdriver for operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102078216B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2402285Y (en) * | 1999-11-05 | 2000-10-25 | 苏继承 | Tool special adapted for internal supporter of hip joint |
| KR100845599B1 (en) * | 2001-12-04 | 2008-07-10 | 신세스 게엠바하 | Bone Screw |
| DE10341697B3 (en) * | 2003-09-10 | 2004-10-07 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Screwdriver used as a hand screwdriver comprises couplings each consisting of a locking bushing, a catch bushing and a pressure spring with a pre-tension between the couplings on a toothed casing |
| US7666189B2 (en) * | 2004-09-29 | 2010-02-23 | Synthes Usa, Llc | Less invasive surgical system and methods |
| US7194934B2 (en) * | 2005-05-23 | 2007-03-27 | Custom Spine, Inc. | Ratcheting torque wrench |
-
2011
- 2011-03-07 CN CN2011100538260A patent/CN102078216B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102078216A (en) | 2011-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20130307 |