CN206303925U - New reciprocating knife tool - Google Patents

Abstract

The utility model discloses a kind of new reciprocating knife tool, including cutter body and the handle of a knife for being arranged at cutter body rear end, the handle of a knife includes being coated at the outer support of cutter body rear end and is arranged at outer support rear end for driving the cutter body reciprocating slide rail cam drive mechanism of single-degree-of-freedom vertically by rotation, outer support inserts power handle in the way of it can be locked out vertically, and the power intake of slide rail cam drive mechanism is circumferentially driven combination with the clutch end of power handle；Axially driving set is coordinated with rotation driving set by cam channel and actuator, rotation driving is converted to the reciprocating motion of cutter body, ensure that the continuity of cutter body motion, cutter body is not in when in use catching phenomenon, substantially increase operating efficiency, it is easy to operate and overall structure is simply compact.

Description

New reciprocating knife tool

Technical field

The utility model is related to medical instruments field, and in particular to a kind of new reciprocating knife tool.

Background technology

During medical operating knife, being frequently run onto needs to make reciprocating linear by driving cutter head using new reciprocating knife tool Move and act on bone tissue or soft tissue, cutter head is such as Medical file, hammer and reciprocating saw etc., traditional new reciprocal knife The cutter body that tool makes new reciprocating knife tool by power handle driving axially movable, and in the prior art, for by power The mode that the axial reciprocating for being converted into cutter body of handle is axially moved is that the edge cam by rotating drives cutter Main body is axially moved, and reply pretightning force backward is set on cutter body, makes cutter body reciprocal axial motion, is replied Pretightning force is generally provided from spring, and because cutter body is realized replying using spring, causes spring dynamics not enough to cause knife There is powerless phenomenon in use in tool main body, reduces operating efficiency, it could even be possible to there is locking situation, gives operation band It is inconvenient to come；The mounting structure of new reciprocating knife tool is also complex in the prior art simultaneously, efficiency is mounted and dismounted when using low； Increase difficulty of the doctor in operation and cumbersome, increase inconvenience part to surgical procedure.

Utility model content

In view of this, the purpose of this utility model is to overcome defect of the prior art, there is provided new reciprocating knife tool, can The quick connection for realizing cutter body and handle, while, it is ensured that the continuity of cutter body motion, it is to avoid cutter body is being used When easily there is catching phenomenon, greatly improve operating efficiency.

New reciprocating knife tool of the present utility model, including cutter body and the handle of a knife for being arranged at cutter body rear end, it is described Handle of a knife includes being coated at the outer support of cutter body rear end and is arranged at outer support rear end for driving cutter by rotation The main body reciprocating slide rail cam drive mechanism of single-degree-of-freedom vertically, outer support is inserted in the way of it can be locked out vertically Enter power handle, the power intake of slide rail cam drive mechanism is circumferentially driven combination with the clutch end of power handle.

Further, the slide rail cam drive mechanism includes fixed jacket in the axially driving set and and power of cutter body The clutch end of handle rotates the rotation driving set for driving and coordinating, axially driving set front end with circumferential spacing in axial sliding The inner circle of outer support is placed in mode, the rotation driving set is single vertically freely by the axially driving set of slide rail actuated by cams Degree is moved back and forth.

Further, the axially driving set rear end it is cylindrical it is circumferentially arranged have a cam channel, the rotation driving covers front end Inner circle is circumferentially fixedly installed actuator, and the actuator is embedded in cam channel and is driven by with cam channel radially inward Axially driving set axially reciprocating is realized in dynamic cooperation.

Further, the cam channel is wavy annular wave channel, and the annular wave channel is axially formed crest And trough.

Further, front end is cylindrical is circumferentially fixedly installed actuator for rotation driving set, after the axially driving set End outward bending is formed and is coated at the cyclic structure that rotation driving covers front end, and the inner circle of cyclic structure is circumferentially arranged to have cam to slide Groove, the actuator is radially embedded in cam channel and drives cooperation to realize axially driving set axially by with cam channel Move back and forth.

Further, the actuator is driving ball；In the driving ball radially inward portion insertion cam channel Realize being driven with cam channel and coordinate.

Further, radially insertion is provided with the through hole that ball is driven for installing to the rotation driving set front end side wall, One ball sheath is coated at rotation driving set in the way of radial direction keeps out driving ball, drives the long with diameter greater than through hole of ball Degree.

Further, the cylindrical friction pad for being arranged with ring-type of the axially driving set, the friction pad is located at rotation driving The front end of set is simultaneously radially supporting between axially driving set and outer support；Set between the rotation driving set and outer support It is equipped with radial clearance.

Further, it is the conformal interior flat structure for being placed on outer support inner circle that the front end of the axially driving set is cylindrical.

Further, the cutter body is knife pipe, is provided with rotation driving set and cuts suction with the row in power handle The row of channel connection cuts hole, and axially driving set is placed in the knife pipe fixation, and the rear end of knife pipe is axially rearwardly extending to penetrate rotation Turn in actuating sleeve and cut hole with row connect, the knife pipe, row cut hole and row cuts suction channel formation row and cuts path.

The beneficial effects of the utility model are：A kind of new reciprocating knife tool, is provided with axial drive disclosed in the utility model Dynamic set and rotation driving set, axially driving set are coordinated by cam channel and actuator with rotation driving set, rotation driving are turned It is changed to the reciprocating motion of cutter body, it is ensured that the continuity of cutter body motion, cutter body is not in when in use card Stagnant phenomenon, substantially increases operating efficiency, and overall structure is simply compact, easy to operate.

Brief description of the drawings

The utility model is further described with reference to the accompanying drawings and examples：

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of axial actuating sleeve in the utility model.

Specific embodiment

Fig. 1 is structural representation of the present utility model, and Fig. 2 is the structural representation of axial actuating sleeve in the utility model, As illustrated, the new reciprocating knife tool in the present embodiment；It is described including cutter body and the handle of a knife for being arranged at cutter body rear end Handle of a knife includes being coated at the outer support 1 of cutter body rear end and is arranged at the rear end of outer support 1 for driving knife by rotation Have the main body reciprocating slide rail cam drive mechanism of single-degree-of-freedom, side of the outer support 1 can be locked out vertically vertically Formula inserts power handle, and the power intake of slide rail cam drive mechanism is circumferentially driven knot with the clutch end of power handle Close；Cutter body can be solid knife bar or hollow knife pipe, and certainly, cutter body front end can be fixedly installed cutter head, cutter head Can be file head, hammer or reciprocating saw blade etc., the mode that cutter head is installed on cutter body can realize this practicality for prior art All fixed forms of new purpose, such as clamping, weld or be integrally formed, cutter head is made by cutter body axially reciprocating Move back and forth and act on bone tissue or soft tissue, rear end is represented on cutter body near power handle one end, otherwise for preceding End, axially represents the axis direction that slide rail cam drive mechanism is rotated, the i.e. axial direction of rotation driving set；Single-degree-of-freedom represents cutter Main body translation vertically and then can only realize that cutter body file is dynamic, the power intake and power handle of slide rail cam drive mechanism Clutch end can be engaged by face gear or shift fork be implemented in combination with circumferential transmission, quickly realize new reciprocating knife tool and dynamic The connection of power handle, meanwhile, rotated by slide rail cam drive mechanism and drive the reciprocal single-degree-of-freedom of cutter body to move back and forth, it is sliding Rail cam drive mechanism can be will not be repeated here with cutter body with that can realize all existing structures of the utility model purpose, be protected The continuity of card cutter body motion, it is to avoid catching phenomenon occurs when in use in cutter body, greatly improves operating efficiency.

In the present embodiment, the slide rail cam drive mechanism includes fixed jacket in the He of axially driving set 2 of cutter body The rotation driving set 3 for driving and coordinating, 2 front ends of axially driving set axle with circumferential spacing are rotated with the clutch end of power handle To the inner circle that outer support 1 is placed in the mode slided, the rotation driving set 3 is by the axially driving set 2 of slide rail actuated by cams Single-degree-of-freedom is moved back and forth vertically；Rotation driving set 3 and axially driving set 2 are driven using sheath structure beneficial to slide rail cam is improved The stability of each kinematic pair of motivation structure (including rotating secondary and sliding pair), and the cooperation of 2 front ends of axially driving set and outer support 1 Mode can be to lay circumferential stopper slot, the cylindrical formation in the front end of axially driving set 2 and axial limiting vertically in the inner circle of outer support 1 The circumferential limited block that groove coordinates.

In the present embodiment, 2 rear ends of the axially driving set are cylindrical circumferentially arranged to have cam channel 4, the rotation driving Cover 3 front end inner circles and be circumferentially fixedly installed actuator 5, the actuator 5 be embedded in radially inward cam channel 4 and by with Cam channel 4 drives cooperation to realize 2 axially reciprocatings of axially driving set；Actuator 5 can be circumferentially to be fixed on rotation driving The structures such as the cylinder or hemisphere of 3 inner circles are covered, the cam channel 4 is wavy annular wave channel, the annular wave Groove is axially formed crest 4a and trough 4b, and the shape of cam channel 4 can be sine curve or cosine curve, and actuator 5 is in rotation Circled under the driving of actuating sleeve 3, due to the actuator 5 that circles in annular wave channel to annular wave channel Cell wall applies component forward or backward so that the circumferential axially driving set being limited is moved forwards or backwards；The present embodiment ripple Peak 4a and trough 4b are spaced successively respectively to be set to two, soft with the active force of the cell wall of cam channel 4 beneficial to actuator 5 It is suitable, it is ensured that actuator 5 drives smooth and larger to the axial driving force of axially driving set 2；The flat horizontal surface 11a of flat structure 11 can It is arranged at the crest 4a lower sections of cam channel 4, it is ensured that 2 length of axially driving set are short, compact conformation, and drives inertia small.

In another embodiment, front end is cylindrical is circumferentially fixedly installed actuator, the axial direction for rotation driving set The outward bending of actuating sleeve rear end is formed and is coated at the ring-type body (not shown) that rotation driving covers front end, the inner circle edge of ring-type body Cam channel is circumferentially provided with, the actuator is radially embedded in cam channel and coordinates real by being driven with cam channel Existing axially driving set axially reciprocating；Cam channel is arranged at into rotation driving in the structure to put, and actuator is arranged at It is axially driving to put, it is reciprocating vertically by cam channel rotational movement actuator, can realize that this practicality is new The utility model purpose of type, and actuator can for cylinder and radially insert be arranged at the cylindrical radially-directed of axially driving part Groove, sets spring between cylinder bottom and gathering sill, cylinder radially inserts cam channel under the elastic force of spring In, it is convenient to install, and drive stabilization.

In the present embodiment, the actuator 5 is driving ball；The driving ball radially inward portion insertion cam is slided Realize being driven with cam channel 4 in groove 4 coordinating；Ball is driven circumferentially to be fixedly installed on the inner circle of rotation driving set 3, the rotation Turning the inner circle of actuating sleeve 3 can cave inward the arc groove to be formed and ball is driven for installing, and then realize driving ball with can The mode of rotation is circumferentially fixed relative to rotation driving set 3 with axial direction；Driving ball is set to by by actuator 5, is driven Dynamic ball is circled around axially driving set 2 and rolled with through hole 6 and cam channel 4 and coordinates, and greatly reduces frictional resistance, is protected Card drives the heat that smooth and friction is produced few, it is ensured that dynamic high efficiency is exported.

In the present embodiment, the rotation driving covers 3 front end side walls, and radially insertion is provided with for installing driving ball Through hole 6, a ball sheath 7 overcoat in the way of radial direction keeps out driving ball is arranged at rotation driving set 3, drives the diameter of ball More than the length of through hole 6；Ball sheath 7 is used to prevent from driving ball radially to be come off from through hole 6, by through hole 6 and rolling The setting of pearl sheath 7 so that drive ball easy for installation, and mounting structure stabilization.Simultaneously as ball sheath 7 is arranged on rotation Turn between the outer wall of actuating sleeve 3 and the inwall of outer support 1, rotation driving set 3 rotate when, ball not directly with outer support 1 in Wall is contacted, and ball sheath 7 can play a part of friction isolation, it is to avoid ball spin friction causes the abrasion of outer support 1.

In the present embodiment, the cylindrical friction pad 8 for being arranged with ring-type of the axially driving set 2, the friction pad 8 is located at rotation Turn actuating sleeve 3 front end and it is radially supporting in it is axially driving set 2 and outer support 1 between；The rotation driving set 3 and outer branch Radial clearance is provided between support body 1；Maximum exradius and simultaneously of the exradius of friction pad 8 more than rotation driving set 3 More than the exradius of ball sheath, friction pad 8 makes axially driving set 2 be produced during relative motion with outer support 1 The radial clearance of stabilization, makes rotation driving cover between 3 front ends and outer support 1 and keeps certain interval, it is to avoid friction；The friction Pad 8 can be prepared from using self-lubricating material, it is to avoid rotation driving to cover and produce sliding friction between 3 leading sections and outer support 1 Power, so as to ensure that driving is smooth, the heat for producing that rubs is few, and is conveniently replaceable, and extends new reciprocating knife tool service life.

In the present embodiment, the rear end face of the rotation driving set 3 is provided with the circumferentially distributed power for power handle The shift fork 9 that output end transmission is combined, the shift fork 9 inner circle set is provided with for applying pretightning force forward to rotation driving set 3 Column spring 10, the rear end of the column spring 10 presses on the clutch end of power handle, and front end presses on rotation driving The rear end face of set 3；The shift fork 9 is multiple and circumferentially enclose and be set as ring-type, and the rear end of single shift fork 9 is pointed guide frame, It is easy to combine transmission；It is enclosed construction that the present embodiment rotation driving covers 3 rear ends, and the front end of column spring 10 presses on rotation driving set 3 rear end face, covers 3 and applies pretightning force forward, it is to avoid cutter body loosens, it is ensured that power by column spring 10 to rotation driving Output is coherent, and power output efficiency is high, and noise is small.

In the present embodiment, it is the conformal interior flat knot for being placed on the inner circle of outer support 1 that the front end of the axially driving set 2 is cylindrical Structure 11；Flat structure 11 is easy to process, circumferentially spacing stabilization, and the flat horizontal surface 11a of the flat structure 11 may be disposed at cam The crest 4a lower sections of chute 4, it is ensured that 2 length of axially driving set are short, compact conformation, and drive inertia small.

In the present embodiment, the cutter body is knife pipe 12, is provided with and the row in power handle in rotation driving set 3 The row for cutting suction channel connection cuts hole 13, the knife pipe 12 fix in be placed on axially driving set 2, the rear end of knife pipe 12 vertically to Extend afterwards and penetrate in rotation driving set 3 and cut hole 13 with row and connect, the knife pipe 12, row cuts hole 13 and row cuts suction channel and formed Row cuts path；Certainly, it is provided with radial clearance between knife pipe 12 and rotation driving set 3；It is along rotation driving that the row cuts hole 13 Cover the via of 3 radial direction insertions setting, the front port of knife pipe 12 is provided with suction intake, be provided with power handle suction outlet and Suction outlet aspirator, realizes that the bone that will file movable property life is cut from vivo and extracts external out.

In the present embodiment, also including outer knife pipe 14, the outer knife pipe 14 is coated in knife pipe 12 and rear end fixation and is placed on outward The inner circle of supporter 1；The outer knife pipe 14 is fixedly installed the shadow avoided beneficial to the knife pipe 12 for ensureing to be axially moved to surrounding tissue Ring, facilitate operation technique.

In the present embodiment, the rear end of the outer support 1 is provided with the back-up ring for covering 3 axial limitings to rotation driving 15, the back-up ring 15 is connected and fixed in the rear end of outer support 1；As illustrated, the front end of rotation driving set 3 radially to It is outer to be bent to form the cyclic structure 16 for being coated at 2 rear ends of axially driving set, the inner circle of outer support 1 is placed in the front end of back-up ring 15 simultaneously The shoulder of cyclic structure 16 is kept out, it is spacing axially rearward to cyclic structure 16, it is convenient to mount and dismount, maintain easily maintenance；The gear 15 interface arrangments are enclosed for prior art, be will not be repeated here.

In the present embodiment, the front end of the outer support 1 is cylindrical to be provided with for realizing outer support with power handle cooperation The annular groove 17 of the axial limiting of body 1；The section of the annular groove 17 can be arc groove, when handle of a knife is inserted back into power handle, It is arranged at the locking ball of power handle inner circle radially embedded and be fixed in annular groove 17 and realize the axial lock of outer support 1 Only, the structure for being installed on power handle of locking ball belongs to existing structure, will not be repeated here, and is realized by annular groove 17 outer The axial limiting of supporter 1, simple structure is easy to operate.

Finally illustrate, above example is only used to illustrate the technical solution of the utility model and unrestricted, although ginseng The utility model has been described in detail according to preferred embodiment, 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 the objective and model of technical solutions of the utility model Enclose, it all should cover in the middle of right of the present utility model.

Claims (10)

1. a kind of new reciprocating knife tool, it is characterised in that：It is described including cutter body and the handle of a knife for being arranged at cutter body rear end Handle of a knife includes being coated at the outer support of cutter body rear end and is arranged at outer support rear end for driving cutter by rotation The main body reciprocating slide rail cam drive mechanism of single-degree-of-freedom vertically, outer support is inserted in the way of it can be locked out vertically Enter power handle, the power intake of slide rail cam drive mechanism is circumferentially driven combination with the clutch end of power handle.

2. new reciprocating knife tool according to claim 1, it is characterised in that：The slide rail cam drive mechanism includes fixing It is coated at the axially driving set of cutter body and the rotation driving set for driving and coordinating, axle is rotated with the clutch end of power handle It is placed on the inner circle of outer support in mode in axial sliding with circumferentially spacing to actuating sleeve front end, the rotation driving set passes through Single-degree-of-freedom is moved back and forth the axially driving set of slide rail actuated by cams vertically.

3. new reciprocating knife tool according to claim 2, it is characterised in that：The axially driving set rear end is cylindrical circumferentially Cam channel is provided with, the rotation driving set front end inner circle is circumferentially fixedly installed actuator, and the actuator is radially To be embedded in cam channel and by with cam channel drive cooperation realize axially driving set axially reciprocating.

4. new reciprocating knife tool according to claim 3, it is characterised in that：The cam channel is wavy circumferential wave Unrestrained groove, the annular wave channel is axially formed crest and trough.

5. new reciprocating knife tool according to claim 2, it is characterised in that：The rotation driving set front end is cylindrical circumferentially Actuator is fixedly installed, the axially driving set rear end outward bending is formed and is coated at the ring-type knot that rotation driving covers front end Structure, the inner circle of cyclic structure is circumferentially arranged cam channel, and the actuator is radially embedded in cam channel and passes through Cooperation is driven to realize axially driving set axially reciprocating with cam channel.

6. new reciprocating knife tool according to claim 3, it is characterised in that：The actuator is driving ball；The drive Realize being driven with cam channel in dynamic ball radially inward portion insertion cam channel and coordinate.

7. new reciprocating knife tool according to claim 6, it is characterised in that：The rotation driving set front end side wall is radially Insertion is provided with the through hole that ball is driven for installing, and a ball sheath is coated at rotation in the way of radial direction keeps out driving ball Actuating sleeve, drive ball with diameter greater than through hole length.

8. new reciprocating knife tool according to claim 3, it is characterised in that：The cylindrical of axially driving set is arranged with ring The friction pad of shape, the friction pad be located at rotation driving set front end and it is radially supporting in it is axially driving set with outer support it Between；Radial clearance is provided between the rotation driving set and outer support.

9. new reciprocating knife tool according to claim 2, it is characterised in that：It is suitable that the front end of the axially driving set is cylindrical The flat structure of outer support inner circle is placed in shape.

10. new reciprocating knife tool according to claim 2, it is characterised in that：The cutter body is knife pipe, rotation driving It is provided with set and cuts the row that suction channel connects with the row in power handle and cut hole, is placed in the knife pipe fixation axially driving Set, the rear end of knife pipe is axially rearwardly extending to be penetrated in rotation driving set and cuts hole with row and connect, the knife pipe, is arranged and is cut hole and row Cut suction channel formation row and cut path.