CN205866801U - Sealed driving medical handle - Google Patents

Abstract

The utility model discloses a sealed driving medical handle, set up magnetism power take off subassembly and magnetism power input assembly in handle casing side by side including handle casing, edge axial, magnetism power take off subassembly be used for with the transmission of cutter joint, magnetism power input assembly and power device transmission coordination are used for rotating through magnetic force actuation magnetism power take off subassembly, be provided with the separator that is used for forming the axial static seal between magnetism power take off subassembly and the magnetism power input assembly, avoid handle casing because of sealing of movive seal does not sternly exchange the problem that the appearance was revealed a little, increase substantially the life and the clinical use's of power handle security and stability, and through magnetic coupling transmission power, the stable driving cutter rotates, high transmission efficiency, the cutter is installed behind the handle, and axial and radial anti load -carrying ability are strong, has strong bending resistance square ability simultaneously, avoids the problem that power transmission unstability or loss are big, guarantees the high efficiency of operation.

Description

Seal driving medical handle

Technical field

This utility model relates to medical instruments field, is specifically related to the driving medical handle of a kind of sealing.

Background technology

In the operation that osseous tissue or soft tissue grinding excise, generally use power handle and be installed on the height of power handle The cutter that speed rotates carries out abrasive drilling, planing etc. and processes, and is provided with micro machine and is carried by power by driving member in power handle To cutter, in order in operation, cleaning in time hinders blood and the normal saline in the visual field, generally it is provided with on power handle For the suction channel of the material such as suction blood and normal saline, the water filling that the most also can be provided for irrigating normal saline is led to Road.Described suction channel and power handle front end inner space by governor valve control suction flow, in order to avoid blood with Normal saline soaks decelerator and micro machine in power handle, the generally cylindrical at driving member and arranges sealing member and formed axially dynamic close Envelope, it is to avoid the liquid of power handle front end inner chamber flows into power handle rear end inner chamber, generally uses rubber yet with sealing member Circle seals or the structure such as ceramic seal for movable sealing, and driving member rotates so that driving member and sealing member and/or power handle Relatively rotate between housing and sealing member, there is micro-leakage all the time so that motor is short for service life, and sealing member is normal and blood And contact with normal saline, power handle is easily easily formed sodium chloride crystallization after high temperature sterilize at sealing surface, easily causes after rotation Seal failure so that decelerator and motor bearings corrosion clamping stagnation, causes maintenance and repair cost high, affects stablizing of Clinical practice Property.

Utility model content

In view of this, the purpose of this utility model is to overcome defect of the prior art, it is provided that the driving doctor of a kind of sealing With handle, being rotated by magnetic couple transmission power stabilized driving cutter, transmission efficiency is high, and in the inner chamber shape of power handle Become effective axial seal, it is to avoid leakage problem, it is to avoid decelerator and micro machine in power handle are corroded, and increase substantially The service life of power handle and the stability of Clinical practice.

The driving medical handle of sealing of the present utility model, including handle housing, is juxtaposed on handle housing vertically Interior magnetic driven output precision and magnetic driven input module, described magnetic driven output precision for engaging biography with cutter Dynamic, described magnetic driven input module is coordinated with power set transmission and is used for being turned by magnetically-actuated magnetic driven output precision Dynamic, it is provided with between described magnetic driven output precision and magnetic driven input module for forming the isolation that axial static seals Part.

Further, described magnetic driven input module drives magnetic driven output precision to rotate by axial magnetic；Described Separator is detachable with handle housing fixing to be connected and front end face protrudes axially forward formation support shaft, and described magnetic driven is defeated Go out assembly in the way of axial limiting rotating jacket in support shaft.

Further, described magnetic driven output precision includes being combined the power output member of transmission cooperation with cutter and being fixed on The driven magnet of power output member, described power output member be coated at support shaft and its axial rearward end face by a plane bearing with The axial forward end face of separator is rotatably assorted.

Further, described plane bearing includes annular retainer and multiple circumferentially distributed in the ball of annular retainer, Described annular retainer is coated at support shaft and the axially disposed installing hole having for installing ball；Described ball diameter is more than The axial length of installing hole.

Further, the inner circle of described annular retainer extends axially forward formation support set, and described support set is with along week Radially it is supported between power output member and support shaft to the mode slided.

Further, described installing hole is arranged at the junction of annular retainer and support set, the rear port diameter of installing hole Less than the diameter of ball, the rear end cylindrical radially indent of described support set forms half arc connected with the front port of installing hole Groove, described ball coordinates embedding installing hole by front port and half arc groove of installing hole；In the inner circle of described installing hole Between be provided with arc-shaped ring groove, the radian of described arc-shaped ring groove matches with the radian of ball outside surface.

Further, the front end fixed jacket of described support shaft is provided with spacing ring, and the axial rearward end face of described spacing ring is used In power output member is axially positioned；Described power output member includes power output ring and by the front end face edge of power output ring The shift fork of axially projecting formation, described shift fork is multiple and is along the circumferential direction distributed；Described sealing is driving medical Handle also includes the positioning sleeve for location axial to cutter, described positioning sleeve with axial rearward end face low pressure in power output ring Mode fixing in be placed on the inner circle that multiple shift fork is formed.

Further, the decelerator for slowing down, magnetic it are additionally provided with between described magnetic driven input module and power set Property power input module include that circumference transmission is coated at the power input of reducer output shaft and is fixed on power input Actively magnet, described active magnet and driven magnet by the most just in the way of attract each other setting；Described active magnet with Axial gap it is provided with between driven magnet and separator.

Further, described active magnet and driven magnet are arc magnetic shoe, and described arc magnetic shoe is multiple and circumferentially Direction is uniformly distributed, and the axial same side of two circumferentially-adjacent arc magnetic shoes is synonyms pole.

Further, described separator be front end close separation sleeve, the outer ring of described separation sleeve circularize step I and with The ring-shaped step II overlap joint cooperation being arranged at handle housing inner circle realizes separation sleeve axial limiting, described ring-shaped step I and annular The axially facing surface of step II is provided with O-ring seals.

The beneficial effects of the utility model are: the driving medical handle of a kind of sealing disclosed in this utility model, pass through magnetic Property power import and export assembly the power of power set is inputted, magnetic driven import and export assembly is defeated by magnetically-actuated magnetic driven Go out assembly to rotate, and then band cutter rotates, and arranges shape between magnetic driven import and export assembly and magnetic driven output precision Become the separator of static seal, it is to avoid the problem that handle housing micro-leakage easily occurs because of the poorly sealed of movable sealing, it is to avoid power Decelerator and micro machine in handle are corroded, increase substantially service life of power handle and the safety of Clinical practice and Stability；And transmitting power by magnetic couple, stabilized driving cutter rotates, and transmission efficiency is high；Cutting tool installation manner after handle, The most anti-load-carrying ability is strong, has stronger bending resistance square ability simultaneously, it is to avoid power transmission is unstable or big ask is lost Topic, it is ensured that the high efficiency of operation.

Accompanying drawing explanation

With embodiment, this utility model is further described below in conjunction with the accompanying drawings:

Fig. 1 is the structural representation that this utility model seals driving medical handle；

Fig. 2 is the structural representation of axial seal in this utility model；

Fig. 3 is annular retainer and the structural representation of support set in this utility model；

Fig. 4 is the structural representation of the rear end face of this utility model medium power output；

Fig. 5 is the structural representation of arc magnetic shoe in this utility model.

Detailed description of the invention

Fig. 1 is the structural representation that this utility model seals driving medical handle, and Fig. 2 is the closeest in this utility model The structural representation of envelope, Fig. 3 is annular retainer and the structural representation of support set in this utility model, and Fig. 4 is that this practicality is new The structural representation of the rear end face of type medium power output, Fig. 5 is the structural representation of arc magnetic shoe in this utility model, such as figure Shown in, the driving medical handle of sealing in the present embodiment；Including handle housing 1, it is juxtaposed in handle housing 1 vertically Magnetic driven output precision and magnetic driven input module, described magnetic driven output precision for and cutter couple drive, Described magnetic driven input module coordinates with power set transmission, when power set output power drives magnetic driven input module During rotation, by the magnetic force produced between magnetic driven input module and magnetic driven output precision, drive magnetic driven defeated Go out assembly to rotate, be provided with between described magnetic driven output precision and magnetic driven input module for forming axial static sealing Separator 2；The transmission of described magnetic driven output precision and cutter and magnetic driven input module and power set is joined Close, can use and prior art can realize all drive mechanisms of the present utility model, not repeat them here；And separator 2 can be The closeouts that non-magnet material is made, and the cylindrical of closeouts can arrange sealing ring formed axial static seal, axial static enclosed watch Show that handle housing is sealed by separator 2 vertically and be divided into two chambers, transmit power, stabilized driving cutter by magnetic couple Rotating, separator 2 does not rotates with power input or the driving of output precision, it is to avoid conventional movable sealing because inputting with power or Output precision rotates and causes poorly sealed and the problem of micro-leakage easily occur, and then avoids the decelerator in power handle and micro-electricity Machine is corroded, and increases substantially the service life of power handle and the safety and stability of Clinical practice, and transmission efficiency is high.

In the present embodiment, described magnetic driven input module drives magnetic driven output precision to rotate by axial magnetic； Described separator 2 is detachable with handle housing 1 fixing to be connected, and separator 2 front end face protrudes axially forward formation support shaft 3, Described magnetic driven output precision in the way of axial limiting rotating jacket in support shaft 3；Front end represents axial along handle housing The one end installing cutter is front end, otherwise is rear end；By the setting of support shaft 3, be beneficial to ensure magnetic driven output precision with The alignment of magnetic driven input module, it is ensured that high efficiency power transmission, and owing to described magnetic driven input module is to pass through Axial magnetic drives magnetic driven output precision to rotate, thus uses support shaft 3 can ensure that magnetic driven output precision stress is steady Fixed, it is to avoid magnetic driven output precision rocks.

In the present embodiment, described magnetic driven output precision include being combined with cutter power output member 4 that transmission coordinates and Being fixed on the driven magnet 5 of power output member 4, described power output member 4 is coated at support shaft 3, and power output member 4 is axial Rear end face is rotatably assorted by the axial forward end face of a plane bearing with separator 2；Described power output member 4 can be to be coated to prop up The structures such as the support annular of axle 3 or dish type, power output member 4 is provided with and the joint portion of cutter couple drive, such as circumference tooth or Circumferential slot etc..By the setting of plane bearing, it is ensured that power output member 4 can bear larger axis to load, it is ensured that transmission steady Qualitative, and owing to the direction of displacement of power output member 4 can only be to move axially, identical with coupling magnetic force direction, actively magnet Do not exist along the situation being perpendicular to magnetic force direction relative movement between 16 and passive magnet 5, effectively prevent because of active magnet 16 Produce with passive magnet 5 and there is dysgenic additional moment along being perpendicular to magnetic force direction relative movement, even if when power is defeated Go out part 4 when there is minute movement vertically, nor affect on and pass through between magnetic driven input module and magnetic driven output precision Axial magnetic transmission moment, when plane bearing forms annular indent to separator 2 front end face pressure the most after long-term use, Annular indent has the most spacing effect to plane bearing, it is ensured that motive torque transmission is stable and efficient.

In the present embodiment, described plane bearing includes annular retainer 6 and multiple circumferentially distributed in annular retainer 6 Ball 7, described annular retainer 6 is coated at support shaft 3 and the axially disposed installing hole 8 having for installing ball 7；Described rolling Pearl 7 diameter is more than the axial length of installing hole 8；The present embodiment ball 7 is multiple, can be steel ball, is more than by the diameter of ball 7 The axial length of installing hole 8, it is ensured that the rear end face of power output member 4 is rolling friction with the front end face of separator 2, is substantially reduced Frictional heat, especially when axial load suffered by power output member 4 is bigger, reduces the loss of power by reducing friction, Improve power output efficiency.

In the present embodiment, the inner circle of described annular retainer 6 extends axially forward formation support set 9, described support set 9 Radially it is supported between power output member 4 and support shaft 3 in the way of circumferentially sliding；By the setting of support set 9, support Set 9 is as the special sliding bearing of power output member 4, and cooperatively forms a compound radial thrust bearing with plane bearing, Making to seal driving medical handle and can carry relatively large load both axially and radially, and it is little to rub, power transmission efficiency is high, passes Dynamic stability, it is to avoid locking, and simple in construction, compact.

In the present embodiment, described installing hole 8 is arranged at the junction of annular retainer 6 and support set 9, after installing hole 8 Port diameter forms the front port with installing hole 8 less than the diameter of ball 7, the rear end cylindrical radially indent of described support set 9 Half arc groove 10 of connection, described ball 7 coordinates embedding installing hole 8 by front port and half arc groove 10, conveniently installs Ball 7；Arc-shaped ring groove 11, the radian of described arc-shaped ring groove 11 and ball 7 outer surface it is provided with in the middle of the inner circle of described installing hole 8 Radian match, effectively prevent ball 7 from coming off from installing hole 8 when installing, improve installation effectiveness.

In the present embodiment, the front end fixed jacket of described support shaft 3 is provided with spacing ring 12, described spacing ring 12 axial Rear end face is for being axially positioned power output member 4；Described power output member 4 includes power output ring and by power output ring Front end face axially protrude the shift fork 13 of formation, described shift fork 13 is for multiple and be along the circumferential direction distributed；Described Sealing driving medical handle and also include the positioning sleeve 14 for location axial to cutter, described positioning sleeve 14 is with axial rearward end face Press on the mode of power output ring fixing in be placed on the inner circle that multiple shift fork 13 is formed；Formed by described cutter rear end The fork slot engaged with shift fork 13, shift fork 13 inserts fork slot and carries out circumference transmission, easy for installation, Stability Analysis of Structures, And when Cutting tool installation manner, axially positioned by positioning sleeve 14, and the axial load of cutter is transferred to by positioning sleeve 14 Power output ring, it is ensured that loading force transfers is circumferentially distributed uniformly, it is to avoid transmit axial load by shift fork 13 and The problem being easily generated additional moment.

In the present embodiment, between described magnetic driven input module and power set, it is additionally provided with the decelerator for slowing down 19, magnetic driven input module includes that circumference transmission is coated at the power input 15 of the output shaft of decelerator 19 and is fixed on dynamic The active magnet 16 of power input component 15, described active magnet 16 and driven magnet 5 by the most just in the way of attract each other and set Put；It is provided with axial gap between described active magnet 16 and driven magnet 5 and separator 2；As it can be seen, described active magnetic Body 16 is the most multiple with driven magnet 5, and quantity is equal, and is respectively embedded into the power output member 4 (rear end face) of correspondence and moves The axial end of power input component 15 (front end face) is also fixed, and by rationally arranging described axial gap, it is ensured that actively magnet 16 And the maximum torque resistant between driven magnet 5 is bigger, it is to avoid occur skidding.

In the present embodiment, described active magnet 16 and driven magnet 5 are arc magnetic shoe, described arc magnetic shoe be multiple also It is distributed uniformly and circumferentially, and the axial same side of two circumferentially-adjacent arc magnetic shoes is synonyms pole；Ensure active magnetic Between body 16 and driven magnet 5 bear Overload torque and occur circumference skid after can recover rapidly magnetic driver.

In the present embodiment, the separation sleeve that described separator 2 is closed for front end, the outer ring of described separation sleeve circularizes step I 17 also overlaps to coordinate with the ring-shaped step II 18 being arranged at handle housing 1 inner circle and realizes separation sleeve axial limiting, described annular The axially facing surface of step I17 and ring-shaped step II18 is provided with O-ring seals 19；As it can be seen, the cylindrical leading portion of separation sleeve Indent also forms ring-shaped step I 17 with back segment, the corresponding convex of cylindrical leading portion of described handle housing inner circle and separation sleeve, and with The cylindrical leading portion form-fit of separation sleeve is the most spacing, it is ensured that the stability of separator 2, simultaneously by ring-shaped step I17 The axially facing surface of ring-shaped step II18 is provided with O-ring seals 19, after installation, described separation sleeve rear end be provided with axially to Front pretightning force, it is ensured that O-ring seals 19 is by axial thrust, good sealing effect；Certainly, described pretension axially forward Power can be that the round nut being placed on handle housing in screw thread applies, and belongs to prior art, does not repeats them here.

Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, without deviating from objective and the model of technical solutions of the utility model Enclosing, it all should be contained in the middle of right of the present utility model.

Claims (10)

1. one kind seals driving medical handle, it is characterised in that: include handle housing, be juxtaposed on handle housing vertically Interior magnetic driven output precision and magnetic driven input module, described magnetic driven output precision for engaging biography with cutter Dynamic, described magnetic driven input module is coordinated with power set transmission and is used for being turned by magnetically-actuated magnetic driven output precision Dynamic, it is provided with between described magnetic driven output precision and magnetic driven input module for forming the isolation that axial static seals Part.

The driving medical handle of sealing the most according to claim 1, it is characterised in that: described magnetic driven input module leads to Crossing axial magnetic drives magnetic driven output precision to rotate；Described separator is detachable with handle housing fixing to be connected and front end Face protrudes axially forward formation support shaft, described magnetic driven output precision in the way of axial limiting rotating jacket in support Axle.

The driving medical handle of sealing the most according to claim 2, it is characterised in that: described magnetic driven output precision bag Include and be combined the power output member that transmission coordinates and the driven magnet being fixed on power output member with cutter, outside described power output member It is placed on support shaft and its axial rearward end face is rotatably assorted by the axial forward end face of a plane bearing with separator.

The driving medical handle of sealing the most according to claim 3, it is characterised in that: described plane bearing includes annular guarantor Holding frame and multiple circumferentially distributed in the ball of annular retainer, described annular retainer is coated at support shaft and axially disposed There is the installing hole for installing ball；Described ball diameter is more than the axial length of installing hole.

The driving medical handle of sealing the most according to claim 4, it is characterised in that: the inner circle edge of described annular retainer Extending axially forward formation support set, described support set is radially supported in power output member and support in the way of circumferentially sliding Between axle.

The driving medical handle of sealing the most according to claim 5, it is characterised in that: described installing hole is arranged at annular guarantor Holding the junction of frame and support set, the rear port diameter of installing hole is less than the diameter of ball, the cylindrical edge, rear end of described support set Radially indent forms half arc groove connected with the front port of installing hole, and described ball passes through front port and half arc of installing hole Connected in star coordinates embedding installing hole；Be provided with arc-shaped ring groove in the middle of the inner circle of described installing hole, the radian of described arc-shaped ring groove with The radian of ball outside surface matches.

The driving medical handle of sealing the most according to claim 4, it is characterised in that: outside the front end of described support shaft is fixing Set is provided with spacing ring, and the axial rearward end face of described spacing ring is for being axially positioned power output member；Described power exports Part includes that power output ring and the front end face by power output ring axially protrude the shift fork formed, and described shift fork is Multiple and be along the circumferential direction distributed；The driving medical handle of described sealing also includes the positioning sleeve for location axial to cutter, It is placed on, in described positioning sleeve is fixing in the way of axial rearward end face presses on power output ring, the inner circle that multiple shift fork is formed.

The driving medical handle of sealing the most according to claim 3, it is characterised in that: described magnetic driven input module with Being additionally provided with the decelerator for slowing down between power set, magnetic driven input module includes that circumference transmission is coated at decelerator The power input of output shaft and the active magnet being fixed on power input, described active magnet and driven magnet are with vertically Just to mode attract each other setting；It is provided with axial gap between described active magnet and driven magnet and separator.

The driving medical handle of sealing the most according to claim 8, it is characterised in that: described active magnet and driven magnet Being arc magnetic shoe, described arc magnetic shoe is multiple and is distributed uniformly and circumferentially, and two circumferentially-adjacent arc magnetic shoes Axial same side be synonyms pole.

The driving medical handle of sealing the most according to claim 1, it is characterised in that: described separator is that front end is closed Separation sleeve, the outer ring of described separation sleeve circularize step I and be arranged at handle housing inner circle ring-shaped step II overlap Coordinating and realize separation sleeve axial limiting, the axially facing surface of described ring-shaped step I and ring-shaped step II is provided with O-ring seals.