CN101987036A - Development of manual, electric, positive, reversed and calibrated trephine - Google Patents
Development of manual, electric, positive, reversed and calibrated trephine Download PDFInfo
- Publication number
- CN101987036A CN101987036A CN2009100174553A CN200910017455A CN101987036A CN 101987036 A CN101987036 A CN 101987036A CN 2009100174553 A CN2009100174553 A CN 2009100174553A CN 200910017455 A CN200910017455 A CN 200910017455A CN 101987036 A CN101987036 A CN 101987036A
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- locking
- steel ball
- handle
- trephine
- sleeve
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Abstract
The invention discloses an orthopaedic internal fixation withdrawal instrument: manual, electric, positive, reversed and calibrated trephine, which is composed of an electric trephine, a handle connecting rod (1) and a sleeve (3), wherein the sleeve includes calibrations thereon, the connecting rod is skid-proof in a triangular shape and is provided with a locking opening (2) which achieves locking by means of the connection with a steel ball portion of the handle, the jagged lower part of the sleeve (3) consists of four modes including ultrathin micro invasion, thickened anti-clamping tooth, positive and reversal, the handle is composed of a grip (4) and a locking cylinder (5), the locking cylinder (5) is internally provided with a locking steel ball (6), a pressing piece (7) and a spring (8), the pressing piece (7) presses the steel ball (6) into a steel ball slot (9) while locking so as to fix the locking port of the connecting rod of the trephine and further realize locking, and the pressing piece (7) slides downwards while unlocking so that the steel ball (6) can be bounced out of the steel ball slot along with the pressure inside the cylinder to realize decompression; the trephine has the advantages of good safety, small invasion, multiple purposes in one handle, locking, fast replacement and the like.
Description
Technical field
The development of hands of the present invention, electronic, forward and reverse, scale trepan belongs to orthopaedics internal fixation removal equipment.
Background technology
Using screw fixings behind the extremity fracture is present clinical the most frequently used internal fixation mode, some screw retention time in vivo is long, thereby in the functional exercise that lacks reasonable guidance or in the work, because stress-shielding effect, the segment screw nail meets with stresses huge, cause fracture easily, especially the application of titanium alloy, increased histocompatibility, screw combines closely with sclerotin, thereby just nut and breechblock might be twisted into two parts when taking out screw, thereby the case of broken nail in clinical is more common, common removing method is manual trepan at present, unidirectional and do not have a scale, not only technology falls behind, and wastes time and energy, and wound is big, and the danger that screw threads is dark is arranged, thereby demand a kind of safety urgently and labour-saving broken nail taking-up instrument.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of many internal diameters, ultra-thin Wicresoft, safe anti-pinch sword, hands, electronic, forward and reverse, band scale multi-purpose type trepan.
In order to achieve the above object, the present invention is achieved in that trepan is made up of electric drill and handle connecting rod 1 and sleeve 3, sleeve 3 is marked with scale, connecting rod is triangular in shape anti-skidding, be provided with locking mouth 2, be connected with the steel ball portion of handle and realize locking, sleeve 3 below indentations, be made up of ultra-thin Wicresoft, thickening anti-pinch tooth, forward, reverse four kinds of models, handle (Fig. 3) is made up of handle 4, locking tube 5.In the locking tube 5 locking steelball 6, tabletting 7, spring 8 are arranged, (Fig. 3 left side) tabletting 7 is pressed into steel bead groove 9 with steel ball 6 during locking bit, the locking bayonet socket of trepan connecting rod is fixed (Fig. 4), steel ball snaps in trepan, the connecting rod bayonet socket is realized locking 10, (Fig. 3 right side) tabletting 7 glides when separating lock-bit, and steel ball 6 just can be realized decompress(ion) along with the pressure in the tube ejects steel bead groove.
Advantage of the present invention be manually, but electric dual-purpose dextrorotation is also reversible revolves, and indicates scale, prevents to pierce dark or unidirectional rotation with the screw deep drilling, thereby safety, wound are little, handle is multi-edged, lockable, change fast.
Description of drawings
Fig. 1 left side is the trepan front view; The right side is connecting rod vertical view (Δ).1 electric drill and handle connecting rod; 2 locking mouths; 3 sleeves.
Fig. 2 is the handle front view.
Fig. 3 is the handle cutaway view, and a left side is a locking bit, and is right for separating lock-bit.4 handles; 5 locking tubes; 6 steel balls; 7 tablettings; 8 springs; 9 steel bead grooves.
Fig. 4 is that the trepan handle is in conjunction with figure.10 steel balls snap in trepan, and the connecting rod bayonet socket is realized lock-out state.
The specific embodiment
Further describe below in conjunction with clinical: the at first conventional screw that exposes, the scar tissue around the cleaning screw.If the nail tail exposes, then select suitable big or small trepan, broken nail (or screw) and sclerotin are on every side got out certain interval, screw is taken out.Note, the operation beginning, forward, reverse trepan are all available, according to sleeve scale and screw length, if the bone hole during near ailhead, should be selected reverse sleeve trepan for use, prevent that screw from forward creeping into deep tissue.If screw has been disconnected, then choosing is made guide pin with the screw or the Kirschner wire of broken nail same diameter, inserts broken nail bone hole, selects suitable big or small trepan by above-mentioned steps, and broken nail (or screw) and sclerotin are on every side got out certain interval, and screw is taken out.Manual and electric can freely be changed in this process.
Claims (3)
1. hands, electronic, forward and reverse, scale trepan are made up of electric drill and handle connecting rod (1) and sleeve (3), sleeve is marked with scale, connecting rod is triangular in shape anti-skidding, be provided with locking mouthful (2), be connected the realization locking with the steel ball portion of handle, sleeve (3) below indentation is made up of ultra-thin Wicresoft, thickening anti-pinch tooth, forward, reverse four kinds of models, and handle is made up of handle (4), locking tube (5).In the locking tube (5) locking steelball (6), tabletting (7) and spring (8) are arranged, tabletting during locking bit (7) is pressed into tabletting (7) with steel ball (6) and glides, and steel ball (6) just can be realized decompress(ion) along with the pressure in the tube ejects steel bead groove.
2. trepan according to claim 1 is characterized in that: manual and electric dual-purpose, adapted quick change lock handle.
3. trepan according to claim 1 is characterized in that: can positive and negative two to use, indicate the scale prompting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100174553A CN101987036A (en) | 2009-08-04 | 2009-08-04 | Development of manual, electric, positive, reversed and calibrated trephine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100174553A CN101987036A (en) | 2009-08-04 | 2009-08-04 | Development of manual, electric, positive, reversed and calibrated trephine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101987036A true CN101987036A (en) | 2011-03-23 |
Family
ID=43743962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100174553A Pending CN101987036A (en) | 2009-08-04 | 2009-08-04 | Development of manual, electric, positive, reversed and calibrated trephine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101987036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102232866A (en) * | 2010-05-07 | 2011-11-09 | 国华 | Device for taking out fixing screw in orthopaedics |
| CN102727278A (en) * | 2012-07-16 | 2012-10-17 | 徐永清 | Carpal three-foot fusion apparatus positioning and drilling auxiliary device |
| CN110742673A (en) * | 2018-07-24 | 2020-02-04 | 上海库欣医疗科技有限公司 | Electric bone drill |
-
2009
- 2009-08-04 CN CN2009100174553A patent/CN101987036A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102232866A (en) * | 2010-05-07 | 2011-11-09 | 国华 | Device for taking out fixing screw in orthopaedics |
| CN102727278A (en) * | 2012-07-16 | 2012-10-17 | 徐永清 | Carpal three-foot fusion apparatus positioning and drilling auxiliary device |
| CN110742673A (en) * | 2018-07-24 | 2020-02-04 | 上海库欣医疗科技有限公司 | Electric bone drill |
| CN110742673B (en) * | 2018-07-24 | 2021-03-16 | 上海库欣医疗科技有限公司 | Electric bone drill |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |
|
| DD01 | Delivery of document by public notice |
Addressee: Guo Hua Document name: Review of business letter |