CN105105839B - A kind of medical torque screwdrivers - Google Patents
A kind of medical torque screwdrivers Download PDFInfo
- Publication number
- CN105105839B CN105105839B CN201510607903.0A CN201510607903A CN105105839B CN 105105839 B CN105105839 B CN 105105839B CN 201510607903 A CN201510607903 A CN 201510607903A CN 105105839 B CN105105839 B CN 105105839B
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- CN
- China
- Prior art keywords
- handle
- toothed region
- movable part
- nut
- compression spring
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Classifications
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- 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
- A61B17/8875—Screwdrivers, spanners or wrenches
Abstract
The invention discloses a kind of medical torque screwdrivers, including movable part, the first toothed region, the second toothed region and nut in screwdriver rod, screw driver handle, compression spring, handle, there is driver bit one end of screwdriver rod, the other end is arranged on the center of screwdriver handle, and gos deep into the inside of screwdriver handle；Compression spring, movable part, the first toothed region, the second toothed region and nut in handle are set in screwdriver handle from close to the direction of driver bit, and one end of compression spring is contacted with the inwall of screwdriver handle, and the other end is fixed on the inside of movable part in handle；Movable part is provided with the first toothed region in handle；Second toothed region is arranged on one end of the nut, is closely engaged with first toothed region, shape matches.The smart structural design of all parts of the present invention, miniaturization, miniaturization design and use, it is easy that structure is realized, parts are few, it is easy to process, and cost is low.
Description
Technical field
The invention belongs to medical instruments field, more particularly to a kind of medical torque screwdrivers.
Background technology
Torque screwdrivers are to run into high torque for lock screw or fastener to cause the part fastened
When infringement, screwdriver can skid automatically either dislocate or be simultaneously emitted by apparent sound give user remind, with realize
A kind of screwdriver of specific function of safe locking.Meanwhile, screw can be unscrewed easily again when unscrewing screw or fastener,
Without phenomenon of skidding or dislocate.
In medical domain, especially in surgical procedure, torque screwdrivers are to be used for the crucial medical sector of screw locking, and
Medical sector is not destroyed, while can unscrew screw fastener easily again realizes operation purpose.
Existing medical torque screwdrivers, are divided into two kinds：A kind of is electric power type, is matched somebody with somebody for circuit system and mechanical mechanism
Close and require high, manufacture and using more difficult；It is another be it is mechanical, general structure is all more complicated, and part is more and fine, in length
If the phase is damaged using rear part, then be accomplished by carrying out destructive opening screwdriver changing spare and accessory parts, and due to zero
Accessory is excessive, and the method for manufacture is difficult, and cost is high.
The content of the invention
Technical problem solved by the invention is：How to reduce parts to reduce cost, how to improve labyrinth and set
Meter, reduces the rigors to parts, can be easy to maintenance, while can realize the function of safe torsion again.
In order to solve the above problems, technical scheme is as follows：A kind of medical torque screwdrivers, including screwdriver
Bar, screw driver handle, movable part, the first toothed region, the second toothed region and nut in compression spring, in addition to handle, wherein,
One end of the screwdriver rod has driver bit to be cross or in-line or hexagon or hexagon, and the other end is set
Put in the center of screw driver handle, and go deep into the inside of screw driver handle；
Compression spring, movable part, the first tooth in handle are set in the screw driver handle from close to the direction of driver bit
Shape portion, the second toothed region and nut, one end of compression spring are contacted with the inwall of screwdriver handle, and the other end is fixed in handle movable
The inside of part；
The other end of one end of movable part and screwdriver rod is in close contact in the handle, and the other end of screwdriver rod stretches into handle
Inside interior movable part；The other end of movable part sets first toothed region in handle；
Second toothed region is arranged on one end of the nut, is closely engaged with first toothed region, shape phase
Match somebody with somebody；
The other end of the nut sets fluted, and nut is connected with screw driver handle rear end.
Preferably, the compression spring is screwed and revolved in the opposite direction with first toothed region and second toothed region
Spring.
Preferably, the compression spring other end is fixed, detachably by screwing in movable part one week in handle.
Preferably, in the handle movable part include hollow cylindrical portion, its close to the direction of driver bit end face to described
The position of compression spring is defined, and the other end of the screwdriver rod is repositioned.
Preferably, there is space between the inwall of movable part and the screw driver handle in the handle, be 0.05-0.1mm.
Preferably, first toothed region is axial zigzag or the tooth form of radial direction annular or elastically deformable, described
First toothed region from the handle on movable part it is detachable.
Preferably, second toothed region is detachable from the nut.
Preferably, the nut is connected by spiral way with the screw driver handle, screws direction and first tooth
It is consistent that what shape portion and second toothed region coordinated screws direction.
Preferably, the groove of the other end of the nut is in-line.
Preferably, the external peripheral surface of the screw driver handle is provided with anti-slip veins.
The beneficial effects of the present invention are：Contrasted with existing mechanical torque screwdrivers, the structure design of all parts
It is ingenious, miniaturization, miniaturization design and use, it is easy that structure of the invention is realized, parts are few, it is easy to process, and can be molded, can
Assembling, method is variable, and because all detachably, later stage maintenance is convenient between key components and parts, saves cost, reduces energy
Consumption.Due to simple in construction and ingenious, medical treatment is also extrapolated to, in the industry product high to torque demand such as Aero-Space, very
Or can be generalized to high pulling torqueization design and maximization design are done in each industrial environment, coordinate without circuit and power supply, side
Portable belt.
Brief description of the drawings
Fig. 1 is the sectional view of the medical torque screwdrivers of a specific embodiment of the invention；
Fig. 2 is the partial side elevation view in the medical torque screwdrivers handle of a specific embodiment of the invention；
Fig. 3 is the compression spring structural representation of the medical torque screwdrivers of a specific embodiment of the invention；
Fig. 4 is the stereogram of the medical torque screwdrivers of a specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Referring to Fig. 1-Fig. 4, a kind of medical torque screwdrivers, including screwdriver rod 1, screw driver handle 2, compression spring 3, also
Including movable part in handle 4, the first toothed region 41, the second toothed region 42 and nut 5, wherein,
There is driver bit 11 one end of screwdriver rod 1, is cross or in-line or hexagon or hexagon, and the other end is set
Put in the center of screw driver handle 2, and go deep into the inside of screw driver handle 2；
Compression spring 3, movable part 4 in handle, the are set from close to the direction of driver bit 11 in the screw driver handle 2
One toothed region 41, the second toothed region 51 and nut 5, one end of compression spring 3 are contacted with the inwall of screw driver handle 2, the other end
It is fixed on the inside of movable part 4 in handle；
One end of movable part 4 and the other end of screwdriver rod 1 are in close contact in the handle, and the other end of screwdriver rod 1 is stretched
Enter in handle inside movable part 4；The other end of movable part 4 sets first toothed region 41 in handle；
Second toothed region 51 is arranged on one end of the nut 5, is closely engaged with first toothed region 41, shape
Match；
The other end of the nut 5 sets fluted 52, and nut 5 is connected with the rear end of screw driver handle 2.
Further, the compression spring 3 is to screw direction with first toothed region 41 and second toothed region 51
It is clockwise direction that the first toothed region 41 and the second toothed region 51, which screw direction, in specific embodiment in the spring of phase derotation, figure,
Therefore compression spring 3 is left-handed spring, and it is typically designed as reducing error of the friction to torsion, can be set at the two ends of compression spring 3
Two pads are put, if the not-go-end of compression spring 3 can snap into the inwall of screwdriver handle 2 when rotating without pad, if design
Screw the spring revolved in the opposite direction into first toothed region 41 and second toothed region 51, then screwdriver run into compared with
Big torsion, due to the first toothed region 41 and the occluding relation of the second toothed region 51, meeting coping screw knife bar 1 is motionless, and screwdriver hand
Handle 2 is rotated further so that the first toothed region 41 is slipped from the second toothed region 51, is driven movable part 4 in handle to start to rotate, is rotated
The not-go-end direction of direction and compression spring 3 be consistent, effectively reduce the screens of spring not-go-end or frictional force be excessive and draw
The problem of movable part 4 can not reset in the torsion error or handle risen.First toothed region 41 slips a tooth from the second toothed region 51
After when reaching next tooth occlusal position, due to the elastic force of compression spring 3, obvious sound can be sent, to remind user's torsion
In place, realization is fastened securely；In addition, when unscrewing screw, the occluding relation of the first toothed region 41 and the second toothed region 51 will not
Slip, can unscrew easily.Similarly, it is counter clockwise direction as the first toothed region 41 and the second toothed region 51 screw direction, compresses bullet
Spring 3 is dextrorotation spring.
Further, referring to Fig. 3, the other end of compression spring 3 is left by screwing in movable part 4 one weeks in handle, i.e. dotted line
One week of side, does not interfere with the direction of rotation of compression spring 3, and effective fixation has been carried out again, detachably, by compression spring during dismounting
3 screw out.
Further, in handle movable part 4 include hollow cylindrical portion 42, its close to the direction of driver bit 11 end face to institute
The position for stating compression spring 3 is defined, when torsion reaches predetermined value in use, and the first toothed region 41 is from the second toothed region 51
Slip, movable part 4 produces pressure to compression spring 3 in handle, the end face of hollow cylindrical portion 42 is spacing by the middle part of compression spring 3,
Make its will not the resilience of movable part 4 in radial distorted, influence handle because of compression, and hollow cylindrical portion 42 is also to the screwdriver
The other end of bar 1 is repositioned.
Further, there is space between the inwall of movable part 4 and screw driver handle 2 in handle, be 0.05-0.1mm, this is empty
If gap scope is excessive, it can make it that screwdriver rod 1 rocks in the bounce of movable part 4 springback process in handle；It is movable in handle if too small
Frictional force between part 4 and screw driver handle 2 is excessive, the uniformity that torsion can be influenceed to control.
Further, first toothed region 41 is axial zigzag or the tooth form of radial direction annular or elastically deformable,
First toothed region 41 from the handle on movable part 4 it is detachable, to change.
Further, second toothed region 51 is detachable from the nut 5, to change.
Further, the nut 5 is connected by spiral way with the screw driver handle 2, screws direction and described the
What one toothed region 41 and second toothed region 51 coordinated screw, and direction is consistent, so during screwing screw, in torsion
Be not in the situation that nut 5 is released when larger.
Further, the groove 52 of the other end of the nut 5 is in-line, is easy to assembling and the later stage when production to tie up
Repairing can be locked and be unscrewed by blade conveniently and coin under replacing part, case of emergency, it is not necessary to destroy some portions
Part, and not small pressure is caused to cost and assembling.
Further, the external peripheral surface of the screw driver handle 2 is provided with anti-slip veins 21.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of medical torque screwdrivers, including screwdriver rod, screw driver handle, compression spring, it is characterised in that also including handle
Interior movable part, the first toothed region, the second toothed region and nut, wherein,
One end of the screwdriver rod has driver bit to be cross or in-line or hexagon or hexagon, and the other end is arranged on
The center of screw driver handle, and go deep into the inside of screw driver handle；
Set in the screw driver handle from close to the direction of driver bit compression spring, movable part in handle, the first toothed region,
Second toothed region and nut, one end of compression spring are contacted with the inwall of screw driver handle, and the other end is fixed on movable part in handle
Inside；
The other end of one end of movable part and screwdriver rod is in close contact in the handle, and the other end of screwdriver rod, which is stretched into handle, lives
Inside moving part；The other end of movable part sets first toothed region in handle；
Second toothed region is arranged on one end of the nut, is closely engaged with first toothed region, shape matches；
The other end of the nut sets fluted, and nut is connected with screw driver handle rear end；
The compression spring is to screw the spring revolved in the opposite direction with first toothed region and second toothed region；
The compression spring other end is fixed, detachably by screwing in movable part one week in handle；
Movable part includes hollow cylindrical portion in the handle, its close to the direction of driver bit end face to the position of the compression spring
Put and be defined, and the other end of the screwdriver rod is repositioned.
2. medical torque screwdrivers according to claim 1, it is characterised in that movable part and the screwdriver in the handle
There is space between the inwall of handle, be 0.05-0.1mm.
3. medical torque screwdrivers according to claim 1, it is characterised in that first toothed region is axial zigzag
Or the tooth form of radial direction annular or elastically deformable, first toothed region from the handle on movable part it is detachable.
4. medical torque screwdrivers according to claim 1, it is characterised in that second toothed region is from the nut
Detachably.
5. medical torque screwdrivers according to claim 1, it is characterised in that the nut by spiral way with it is described
Screw driver handle is connected, screw direction and first toothed region and second toothed region cooperation to screw direction consistent.
6. medical torque screwdrivers according to claim 1, it is characterised in that the groove of the other end of the nut is one
Font.
7. medical torque screwdrivers according to claim 1, it is characterised in that the external peripheral surface of the screw driver handle
It is provided with anti-slip veins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607903.0A CN105105839B (en) | 2015-09-22 | 2015-09-22 | A kind of medical torque screwdrivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607903.0A CN105105839B (en) | 2015-09-22 | 2015-09-22 | A kind of medical torque screwdrivers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105105839A CN105105839A (en) | 2015-12-02 |
| CN105105839B true CN105105839B (en) | 2017-08-01 |
Family
ID=54654142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510607903.0A Active CN105105839B (en) | 2015-09-22 | 2015-09-22 | A kind of medical torque screwdrivers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105105839B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849200A (en) * | 2003-09-10 | 2006-10-18 | 费洛工具厂霍兰莱茨有限公司 | Screwdriver with adjustable torque limiting clutch |
| CN201931412U (en) * | 2011-01-11 | 2011-08-17 | 苏州市职业大学 | Mechanical adjustable torque screwdriver |
| CN202556324U (en) * | 2011-12-30 | 2012-11-28 | 上海优拜机械有限公司 | Friction reduction mechanism for miniature medical definite-torque screwdriver |
| CN204839713U (en) * | 2015-05-26 | 2015-12-09 | 北京品驰医疗设备有限公司 | Medical miniature definite torque screwdriver |
| CN205007025U (en) * | 2015-09-22 | 2016-02-03 | 杭州承诺医疗科技有限公司 | Medical torsion screwdriver |
-
2015
- 2015-09-22 CN CN201510607903.0A patent/CN105105839B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849200A (en) * | 2003-09-10 | 2006-10-18 | 费洛工具厂霍兰莱茨有限公司 | Screwdriver with adjustable torque limiting clutch |
| CN201931412U (en) * | 2011-01-11 | 2011-08-17 | 苏州市职业大学 | Mechanical adjustable torque screwdriver |
| CN202556324U (en) * | 2011-12-30 | 2012-11-28 | 上海优拜机械有限公司 | Friction reduction mechanism for miniature medical definite-torque screwdriver |
| CN204839713U (en) * | 2015-05-26 | 2015-12-09 | 北京品驰医疗设备有限公司 | Medical miniature definite torque screwdriver |
| CN205007025U (en) * | 2015-09-22 | 2016-02-03 | 杭州承诺医疗科技有限公司 | Medical torsion screwdriver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105105839A (en) | 2015-12-02 |
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