CN207807574U - A kind of medical miniature torque screwdriver - Google Patents
A kind of medical miniature torque screwdriver Download PDFInfo
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- CN207807574U CN207807574U CN201721923148.8U CN201721923148U CN207807574U CN 207807574 U CN207807574 U CN 207807574U CN 201721923148 U CN201721923148 U CN 201721923148U CN 207807574 U CN207807574 U CN 207807574U
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- ratchet
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Abstract
The utility model discloses a kind of medical miniature torque screwdrivers, belong to medical instruments field, and medical miniature torque screwdriver includes handle and screwdriver swing arm, and handle is equipped with cavity, and the front end of handle is equipped with the circular hole of connection cavity, and rear end is equipped with rear cover；Be equipped in cavity the first ratchet that can be moved axially along handle and with the second ratchet of cavity rotatable engagement, the first ratchet is intermeshed with the second coaxial ratchet and by end face ratchet；First ratchet is mounted on by elastomeric element in cavity, and anti-rotation plane is equipped between the first ratchet and cavity；The head of screwdriver swing arm passes through circular hole, bar tail to be fixed on the center of the second ratchet.In entire torque screwdriver assembling process, installation personnel only needs to be installed according to the installation procedure of regulation, does not need to the adjustment for carrying out torque, you can complete the assembly of torque screwdriver.So as to improve the manufacture mounting means of screwdriver, increase production efficiency.
Description
Technical field
The utility model is related to medical instruments fields, specifically, being related to a kind of medical miniature torque screwdriver.
Background technology
Currently, in neurosurgery clinical operation, the medical instrument of active implantation is generally divided into stimulator and electrode two is big
Part, but the two parts are separation, so can have a connectivity problem between the two.Active implantable medical devices
Operation in, if the screwdriver using non-torque locks the components such as electrode and conducting wire, often because be unable to control output
The size of torque and cause connecting component damage or not tight, gently then influence operation quality, it is heavy then cause perform the operation failure.Separately
If outer force moment screw knife output torque is unstable or cutter head selection, size etc. are unreasonable, the failure of operation is also resulted in.
The torque screwdriver possessed on the market needs to carry out the adjusting of torque by way of rotation when mounted, installation compared with
For complexity.
Invention content
The purpose of this utility model is to provide a kind of medical miniature torque screwdriver, in the feelings that need not carry out torque adjustment
The simple installation of torque screwdriver can be carried out under condition.
To achieve the goals above, medical miniature torque screwdriver provided by the utility model includes handle and screwdriver rotation
Bar, handle are equipped with cavity, and the front end of handle is equipped with the circular hole of connection cavity, and rear end is equipped with rear cover；Being equipped in cavity can be along handle
The first ratchet and the second ratchet with cavity rotatable engagement of axial movement, the first ratchet and the second coaxial ratchet and pass through end
Face ratchet intermeshing；First ratchet is mounted on by elastomeric element in cavity, flat equipped with anti-rotation between the first ratchet and cavity
Face；The head of screwdriver swing arm passes through circular hole, bar tail to be fixed on the center of the second ratchet.
In above-mentioned technical proposal, torque screwdriver is during the lock-screw on twisting stimulator, when not tightening, bullet
Property component drive the first ratchet and the second ratchet to rotate together, to drive the lock-screw on stimulator slowly to lock；Work as lock
When tight screw reaches required torque, the second ratchet can be with the lock-screw remains stationary state on stimulator, and if performing the operation at this time
Personnel continue rotation torque screwdriver, and the second ratchet can jack up the first ratchet, make the first ratchet during being rotated with handle
It is axially moveable, and the second ratchet does not rotate；After handle turns over a hook tooth, the first ratchet again can be in the work of elastomeric element
Restored to origin-location with lower, and hit the second ratchet, sends out the loud and clear of " click ".Anti-rotation between first ratchet and cavity is flat
Face can be a plane, can also be multiple planes of polygon.In entire torque screwdriver assembling process, installation personnel
It only needs to be installed according to the installation procedure of regulation, does not need to the adjustment for carrying out torque, you can complete torque screwdriver
Assembly.So as to improve the manufacture mounting means of screwdriver, increase production efficiency.
Specific scheme is that elastomeric element includes fixed seat, the tension pole that is connected in fixed seat and is set in tension pole
On spring, the end of the first ratchet and tension pole fixes, and one end of spring resists the first ratchet.
More specific scheme is to be covered after fixed seat is connected to, and fixed seat is equipped with periphery, inner headed face, outer end face, interior
End face.The end of tension pole is equipped with periphery, step surface, and tension pole passes through the step surface and fixed seat of tension pole after fixed seat
Inner face blocks, and one end of spring resists the outer end face of fixed seat.Tension pole can in fixed seat free movement in an axial direction, spring
Resisting fixed seat outer end face makes tension pole step surface be clasped with the inner face in fixed seat, forms a snap-in structure.
Another specific scheme is that the first ratchet is equipped with tapped hole, and the end of tension pole coordinates with the hole, and
Equipped with the external screw thread with the screw-internal thread fit in hole.The connection type can be easy to disassemble.
Another specific scheme is that the second ratchet is equipped with an annular convex platform, is equipped in cavity with boss clamping and to the
Two ratchets carry out the nut of axial restraint.Nut can limit the second ratchet in axial movement, but the second ratchet can opposite bores
It is rotated.
More specific scheme is equipped with the first washer between nut and boss, and second packing ring is equipped between boss and cavity end.
Screwdriver swing arm, the second ratchet, the first washer and second packing ring together constitute rotational structure, the first washer and second packing ring
Diameter be all higher than the diameter of boss, reduce the friction between the second ratchet and inner cavity；First washer reduces the second ratchet
Friction between nut.
More specific scheme is that second packing ring is cup shape, and the bottom of cup is equipped with the aperture across screwdriver swing arm.The
The end of two ratchets is socketed in the second packing ring of cup shape.The end and inner cavity that can prevent the second ratchet rub.
It is preferred that the first washer and second packing ring use PTFE material, the effect for reducing frictional resistance is further functioned as, it is convenient
Relative rotation between second ratchet and handle.
Another specific scheme is that the end face of one end of swing arm and the cooperation of the second ratchet is polygon, and the second ratchet is equipped with
With the polygon groove of end cooperation.Interference fit can also be used, the end face of swing arm is circle, and the setting of the second ratchet coordinates with swing arm
Circular hole.The two can also be connected together by the way of welding.
Preferred scheme is that the front end of handle is equipped with along axially extending one section of screwdriver swing arm.Protection is played to swing arm to make
With.
Description of the drawings
Fig. 1 is the sectional view of the miniature torque screwdriver of the utility model embodiment；
Fig. 2 is the explosive view of the rotational structure of the utility model embodiment；
Fig. 3 is installation diagram of the rotational structure of the utility model embodiment in intracavity of handle；
Fig. 4 is the explosive view of the elastomeric element of the utility model embodiment；
Fig. 5 is the sectional view of the elastomeric element of the utility model embodiment；
Fig. 6 is the ratchet cooperation schematic diagram of the utility model embodiment；
Fig. 7 is the sectional view of first ratchet and handle cooperation of the utility model embodiment.
Wherein：1, handle；2, rear cover；3, the second ratchet；31, nut；32, the first washer；33, second packing ring；4, first
Ratchet；41, anti-rotation plane；42, spring；43, fixed seat；44, tension pole；5, screwdriver swing arm.
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, with reference to embodiments and its attached drawing pair
The utility model is described further.
Embodiment
Referring to Fig. 1 to Fig. 7, the medical miniature torque screwdriver of the present embodiment includes handle 1, screwdriver swing arm 5, the first spine
Wheel 4 and the second ratchet 3.Handle 1 is equipped with cavity, and the front end of handle 1 is equipped with the circular hole of connection cavity, and rear end is equipped with rear cover 2.First
Ratchet 4 and the second ratchet 3 are coaxially mounted to be intermeshed in the cavity of handle 1 and by end face ratchet.First ratchet 4 can be along hand
The axial movement of handle 1, and elastomeric element is equipped between rear cover 2.The head of screwdriver swing arm 5 passes through circular hole, bar tail to be fixed on the
The center of two ratchets 3.Second ratchet 3 can opposite handle 1 cavity rotation.It is equipped between the first ratchet 4 and cavity as shown in Figure 7
Anti-rotation plane 41.
The tension pole 44 and be set on tension pole 44 that elastomeric element includes fixed seat 43, is connected in fixed seat 43
The end of spring 42, the first ratchet 4 and tension pole 44 is fixed, and one end of spring resists the first ratchet 4.After fixed seat 43 is connected to
On lid 2, fixed seat 43 is equipped with periphery, inner headed face, outer end face, inner face.The end of tension pole 44 is equipped with periphery, step
Face, tension pole 44 are blocked across the step surface and the inner face of fixed seat 43 of tension pole 44 after fixed seat 43, one end of spring 42
Resist the outer end face of fixed seat 43.Tension pole 44 can the free movement in an axial direction in fixed seat 43, spring 42 resists fixed seat 43
Outer end face makes 44 step surface of tension pole be clasped with the inner face in fixed seat 43, forms a snap-in structure.First ratchet 4 is equipped with band
The hole of internal thread, the end of tension pole 44 coordinate with the hole, and equipped with the external screw thread with the screw-internal thread fit in hole.
Second ratchet 3 is equipped with an annular convex platform, is equipped in cavity with boss clamping and is carried out to the second ratchet 3 axial solid
Fixed nut 31.It is equipped with the first washer 32 between nut 31 and boss, second packing ring 33 is equipped between boss and cavity end.Second pad
Circle 33 is cup shape, and the bottom of cup is equipped with the aperture across screwdriver swing arm 5.Screwdriver swing arm 5, the second ratchet 3, first pad
Circle 32 and second packing ring 33 together constitute rotational structure.
One end end face of the swing arm 5 of the present embodiment and the cooperation of the second ratchet 3 is polygon, and the second ratchet is equipped with matches with the end
The mode of interference fit can also be used in the polygon groove of conjunction, and the end face of swing arm may be circle, the setting of the second ratchet and swing arm
The circular hole of cooperation.The two can also be connected together by the way of welding.The front end of handle 1 is equipped with along screwdriver swing arm 5
Axially extending one section plays the role of protection to screwdriver swing arm 5.
The mounting means of the medical miniature torque screwdriver of the present embodiment is as follows：
(1) second packing ring 33 is put into the cavity of handle 1 by the installation of rotational structure first, then by mounted spiral shell
Silk knife swing arm 5 and the second ratchet 3 are put into cavity, and then the first washer 32 is put into cavity, finally, nut 31 are screwed in hand
In handle 1 and lock.
Wherein the first washer 32 and second packing ring 33 use PTFE material, play the role of reducing frictional resistance as far as possible,
Allow the smooth rotation in the cavity of handle 1 of entire rotational structure.
(2) tension pole 44 is inserted in fixed seat 43 by the installation of elastomeric element first；Then spring 42 is inserted in tension pole
44；Finally tension pole 44 is tightened on the first ratchet 4.Corresponding, it is real that the utility model may include that the spring of different size comes
The assembly of the torque screwdriver of existing different styles.
When carrying out torque screwdriver general assembly, rotational structure and elastomeric element need to be only fitted into the inner cavity of handle 1, it will
Rear cover 2 screws in handle 1 and tightens.
The application method of the present embodiment is as follows：
Torque screwdriver is during the lock-screw on twisting stimulator, and when not tightening, elastomeric element drives first
Ratchet 4 and the second ratchet 3 rotate together, to drive the lock-screw on stimulator slowly to lock；When lock-screw reaches institute
When needing torque, the lock-screw remains stationary state in the meeting of the second ratchet 3 and stimulator, and if surgical staff continues to rotate at this time
Torque screwdriver, the second ratchet 3 can jack up the first ratchet 4, and the first ratchet 4 is made to be moved in an axial direction during being rotated with handle
It is dynamic, and the second ratchet does not rotate；After handle 1 turns over a hook tooth, the first ratchet 4 can restore under the action of a spring 42 again
To origin-location, and the second ratchet 3 is hit, sends out the loud and clear of " click ".In entire torque screwdriver assembling process, installation personnel
It only needs to be installed according to the installation procedure of regulation, does not need to the adjustment for carrying out torque, you can complete torque screwdriver
Assembly.So as to improve the manufacture mounting means of screwdriver, increase production efficiency.
The utility model is combined by ratchet principle, spring principle, axis class rotary principle, completes setting for torque screwdriver
Meter and installation lock in prescribed torque to help surgical staff to complete lock-screw, reduce the risk of operation.
The foregoing is merely the preferable implementation examples of the utility model, are not intended to limit the utility model, all in the utility model essence
God and principle within, any modification, equivalent replacement, improvement and so on, should be included in the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of medical miniature torque screwdriver, including handle and screwdriver swing arm, it is characterised in that：
The handle is equipped with cavity, and the front end of handle is equipped with the circular hole for being connected to the cavity, and rear end is equipped with rear cover；
Be equipped in the cavity the first ratchet that can be moved axially along the handle and with the second ratchet of cavity rotatable engagement,
First ratchet is intermeshed with the second coaxial ratchet and by end face ratchet；
First ratchet is mounted on by elastomeric element in the cavity, flat equipped with anti-rotation between the first ratchet and the cavity
Face；
The head of the screwdriver swing arm passes through the circular hole, bar tail to be fixed on the center of second ratchet.
2. medical miniature torque screwdriver according to claim 1, it is characterised in that：
The tension pole and be set on the tension pole that the elastomeric element includes fixed seat, is connected in the fixed seat
Spring, the end of first ratchet and the tension pole fixes, and one end of the spring resists first ratchet.
3. medical miniature torque screwdriver according to claim 2, it is characterised in that：
The fixed seat covers after being connected to, and fixed seat is equipped with periphery, inner headed face, outer end face and inner face, tension pole
End be equipped with periphery, step surface, the tension pole pass through fixed seat after the step surface of tension pole and the inner face of fixed seat
It blocks, one end of the spring resists the outer end face of fixed seat.
4. medical miniature torque screwdriver according to claim 2, it is characterised in that：
First ratchet is equipped with tapped hole, and the end of the tension pole and the hole coordinate, and equipped with in hole
Screw-internal thread fit external screw thread.
5. medical miniature torque screwdriver according to claim 1, it is characterised in that：
Second ratchet is equipped with the boss of an annular, is equipped with the boss clamping and to the second spine in the cavity
Wheel carries out the nut of axial restraint.
6. medical miniature torque screwdriver according to claim 5, it is characterised in that：
It is equipped with the first washer between the nut and the boss, the second pad is equipped between the boss and the cavity end
Circle.
7. medical miniature torque screwdriver according to claim 6, it is characterised in that：
The second packing ring is cup shape, and the bottom of cup is equipped with the aperture across the screwdriver swing arm.
8. medical miniature torque screwdriver according to claim 1, it is characterised in that：
The end face of one end of the swing arm and the cooperation of the second ratchet is polygon, and the second ratchet is polygon equipped with coordinating with the end
Shape slot.
9. medical miniature torque screwdriver according to claim 1, it is characterised in that：
The end face of one end of the swing arm and the cooperation of the second ratchet is circle, and the second ratchet is equipped with the circle coordinated with the end
Slot.
10. the medical miniature torque screwdriver according to claim 1 to 8 any claim, it is characterised in that：
The front end of the handle is equipped with along axially extending one section of the screwdriver swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923148.8U CN207807574U (en) | 2017-12-30 | 2017-12-30 | A kind of medical miniature torque screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923148.8U CN207807574U (en) | 2017-12-30 | 2017-12-30 | A kind of medical miniature torque screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207807574U true CN207807574U (en) | 2018-09-04 |
Family
ID=63329389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721923148.8U Active CN207807574U (en) | 2017-12-30 | 2017-12-30 | A kind of medical miniature torque screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207807574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115002636A (en) * | 2022-05-27 | 2022-09-02 | 中国矿业大学 | Controllable artifical middle ear actuator of contact force |
-
2017
- 2017-12-30 CN CN201721923148.8U patent/CN207807574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115002636A (en) * | 2022-05-27 | 2022-09-02 | 中国矿业大学 | Controllable artifical middle ear actuator of contact force |
| CN115002636B (en) * | 2022-05-27 | 2023-03-14 | 中国矿业大学 | Contact force controllable artificial middle ear actuator |
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