CN219763483U - Medical planing device - Google Patents

Abstract

The utility model discloses a medical planing device. The medical planing device comprises a handle piece, a driving mechanism and a plurality of sets of cutter assemblies, wherein the driving mechanism comprises a driver and a transmission piece, and the transmission piece is provided with a mounting part; the cutter assemblies are respectively connected with the handle piece, and each cutter assembly comprises an inner cutter structure, an outer cutter structure and a matching part matched with the mounting part; the cutter assemblies at least comprise a cutter assembly I and a cutter assembly II, the inner cutter structures of the cutter assembly I and the cutter assembly II are provided with movable strokes which rotate relative to the corresponding outer cutter structures, and the inner cutter structure of the cutter assembly I is also provided with reciprocating movements along the axial direction of the handle piece. The utility model can make the handle member cooperate with a plurality of different cutter assemblies, the replacement of the cutter assemblies is more convenient, the use cost is lower, and the operation is more convenient.

Description

Medical planing device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a medical planing device.

Background

The medical planing device is applied to the surgical operation to realize the cutting treatment of soft tissues. The current medical planing device includes planing tool bit and planing handle, and planing handle is used for supplying the staff to grip, stretches into patient tissue department through the planing tool bit to cut off the tissue, and planing tool bit generally can communicate with suction device, thereby after planing tool bit cuts off the tissue, can suck the tissue that cuts off through suction device, in order to reach the cutting purpose. But depending on the type or size of soft tissue, it is often necessary to use different planing heads for the cutting. The traditional planing tool bit and the planing handle are arranged in corresponding models, one planing handle can only be matched with the planing tool bit in a fixed model, so that when different planing tool bits are needed for operation, the whole planing device is usually needed to be replaced, the use cost is high, the pumping device is needed to be reconnected after the planing device is replaced, the preparation work is more, and the operation is also more complicated.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that the conventional planing device can only be provided with planing tool bits of fixed types, so that the use cost is high and the operation is complicated.

In order to solve the above technical problems, the present utility model provides a medical planing device, comprising:

the handle piece is arranged in a hollow manner;

the driving mechanism is arranged in the handle piece and comprises a driver and a transmission piece connected with the driver, and the transmission piece is provided with a mounting part;

a plurality of cutter assemblies, wherein the cutter assemblies can be respectively connected with the handle piece, and each cutter assembly comprises an inner cutter structure, an outer cutter structure and a matching part matched with the mounting part;

the inner knife structures of the first knife assembly and the second knife assembly are provided with a movable stroke corresponding to the inner knife structures of the first knife assembly and the second knife assembly, the inner knife structures of the first knife assembly are also provided with a reciprocating movable stroke along the axial direction of the handle piece, the inner knife structures of the first knife assembly are provided with first contact portions, the outer knife structures of the first knife assembly are provided with second contact portions, the inner knife structures of the first knife assembly rotate relative to the outer knife structures, the first contact portions are driven to rotate together, and the inner knife structures are driven to reciprocate along the axial direction of the handle piece under the interaction of the first contact portions and the second contact portions.

Optionally, the first cutter component is a reciprocating cutter, the second cutter component is a rotary cutter, the inner cutter structures of the cutter components of each set comprise a first cutter tube and a first cutter handle connected with the first cutter tube, and the matching part is arranged on the first cutter handle;

the outer cutter structures of the cutter assemblies comprise second cutter pipes and second cutter handles connected with the second cutter pipes, and the second cutter handles are connected with the handle pieces;

the first cutter tube and the second cutter tube are hollow, the first cutter tube and the second cutter tube can extend out of the handle piece, the first cutter tube is rotationally sleeved on the inner side of the second cutter tube, and the first cutter handle is rotationally sleeved on the inner side of the second cutter handle.

Optionally, the inner cutter structure of the reciprocating cutter further comprises a connecting piece for connecting the first cutter tube and the first cutter handle, the first contact part comprises a clamping groove arranged on the connecting piece, the clamping groove is provided with at least two arc-shaped sections, the two arc-shaped sections are obliquely arranged along the axial direction of the handle piece, and the oblique directions of the two arc-shaped sections are opposite; the outer cutter structure of the reciprocating cutter further comprises a clamping piece, wherein the clamping piece is connected with the second cutter handle and at least partially clamped in the clamping groove to form the second contact part, the driver drives the first cutter handle to rotate and drive the connecting piece to rotate relative to the clamping piece, so that the clamping piece can be abutted to the two arc sections of the clamping groove to drive the connecting piece to reciprocate along the axial direction of the handle piece.

Optionally, the clamping groove comprises two spiral groove sections which are arranged in a cross communication mode, and the rotation directions of the two spiral groove sections are opposite;

the clamping piece comprises a clamp and a clamping protrusion protruding from the clamp, the clamp is rotationally sleeved in the spiral groove section, a clamping hole is formed in the second handle, and the clamping protrusion is clamped in the clamping hole.

Optionally, the inner cutter structure of the reciprocating cutter further comprises a first elastic telescopic piece, and two ends of the first elastic telescopic piece are respectively abutted to the first cutter handle and the connecting piece.

Optionally, the connecting piece cover is located the outside of first handle of a knife, and with form the cooperation of stopping changeing between the first handle of a knife, just first handle of a knife with the connecting piece can be followed the axial relative slip of handle piece.

Optionally, the first cutter tube of the reciprocating cutter is in a cylindrical shape with two open ends, the first cutter tube is provided with a first connecting end and a first cutting end which are oppositely arranged along the axial direction of the first cutter tube, the first connecting end is connected with the driving mechanism, the first cutting end extends out of the handle piece to be arranged, and a first cutting edge part is formed at one end of the first cutting end far away from the handle piece;

the second cutter tube of the reciprocating cutter is in a cylindrical shape with one closed end, the second cutter tube is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube, the second connecting end is connected with the handle piece, the second cutting end extends out of the handle piece to be arranged, the second cutting end is in a closed shape, a cutting opening is formed in the periphery of the second cutting end, a second cutting edge part is convexly arranged on the inner side of the end part of the second cutting end, and the first cutting edge part is opposite to the second cutting edge part and at least partially corresponds to the cutting opening; and/or the number of the groups of groups,

the first cutter tube of the rotary cutter is in a cylindrical shape with one end closed, the first cutter tube is provided with a first connecting end and a first cutting end which are oppositely arranged along the axial direction of the first cutter tube, the first connecting end is connected with the driving mechanism, the first cutting end extends out of the handle piece to be arranged, a first opening is formed in one side along the circumferential direction of the first cutting end, and the circumferential side of the first opening is in a zigzag shape;

the second cutter tube of the rotary cutter is in one-end closed tubular arrangement, the second cutter tube is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube, the second connecting end is connected with the handle piece, the second cutting end extends out of the handle piece, a second opening is formed in one circumferential side of the second cutting end, the circumferential side of the second opening is in a serrated arrangement, and the second opening corresponds to the first opening and the size of the second opening is larger than that of the first opening.

Optionally, the medical planing device further includes an adjusting member movably disposed at an outer side of the handle member and having a reciprocating stroke along an axial direction of the handle member, the adjusting member being connected to the handle member and the outer cutter structure, the adjusting member being movable along the handle member to have a clamped state clamped with the outer cutter structure to fix the cutter assembly to the handle member and an unlocked state separated from the outer cutter structure, and the cutter assembly being releasable from the handle member when the adjusting member is in the unlocked state.

Optionally, a shaft shoulder and a through hole are arranged on the outer peripheral side of the handle piece; the adjusting member includes:

the check ring is fixedly sleeved on the outer side of the handle piece;

the adjusting sleeve is movably sleeved on the outer side of the handle piece and positioned between the shaft shoulder and the stop ring, and a clamping part is arranged on the adjusting sleeve;

the second elastic telescopic piece is abutted between the handle piece and the adjusting sleeve;

the second handle is provided with a buckling part matched with the buckling part, the buckling part and the through hole are oppositely arranged, and the adjusting sleeve moves along the handle piece, so that the buckling part is in a first state of penetrating through the through hole to be buckled with the buckling part and is in a second state of being separated from the buckling part.

Optionally, one of the mounting portion and the mating portion is provided as a snap-in protrusion, and the other is provided as a snap-in groove.

The technical scheme provided by the utility model has the following advantages:

the utility model provides a medical planing device, which comprises a handle piece, a driving mechanism and a plurality of sets of cutter assemblies, wherein the handle piece is used for being held by a user to perform an operation; the driving mechanism is used for driving the cutter assembly to perform cutting movement, and the mounting part on the transmission part of the driving mechanism is matched with the matching part on the cutter assembly, so that the driver can drive the inner cutter structure to rotate so as to perform tissue cutting, a plurality of sets of cutter assemblies can be replaced according to the use requirement, the cutter assemblies are more convenient to replace, the handle piece is not required to be replaced when the cutter head is replaced, the use cost is lower, the cutter assemblies can be flexibly replaced in the operation process, and the operation is more convenient; and when one of the inner knife structures rotates relative to the corresponding outer knife structure, the inner knife structure can be driven to reciprocate along the axial direction of the handle piece under the interaction of the first contact part and the second contact part, so that the cutting along the axial direction of the handle piece can be formed, the cutting modes of the knife assembly are diversified, and the cutting effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a medical planing device (when the handle member is connected with the rotary cutter head) according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the medical planing device of FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the cutter assembly of FIG. 1;

FIG. 4 is an enlarged schematic view of the end of the cutter assembly shown in FIG. 1;

FIG. 5 is a schematic view of a medical planing device (when the handle member is connected with the reciprocating cutter head) according to an embodiment of the present utility model;

FIG. 6 is an exploded view of the medical planing device of FIG. 5;

FIG. 7 is an enlarged schematic view of the end of the cutter assembly shown in FIG. 5;

fig. 8 is a partial schematic view of the medical planing device shown in fig. 5.

Reference numerals illustrate:

100-a medical planing device; 1-a handle member; 11-a first handle segment; 12-a second handle segment; 121-vias; 2-a driving mechanism; 21-a driver; 22-a transmission member; 221-a mounting portion; 2211—a snap-on boss; 3-a cutter assembly; 31-inner knife structure; 311-a first cutter tube; 312-a first tool shank; 3121-mating portions; 3121 a-a snap groove; 313-first elastic expansion; 32-an outer knife structure; 321-a second cutter tube; 322-a second handle; 3221-a clasp; 3221 a-grooves; 33-a connector; 331-a clamping groove; 34-a clamping piece; 341-a clamp; 342-snap-on; 4-an adjusting member; 41-check ring; 42-adjusting the sleeve; 421-clamping part; 4211-balls; 43-a second elastic expansion element; 5-seal.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The present utility model provides a medical planing device 100, which is used for realizing the cutting treatment of soft tissues in the surgical operation of the medical planing device 100. Specifically, referring to fig. 1, 2, 5 and 6, the medical planing device 100 includes a handle member 1, a driving mechanism 2 and a plurality of cutter assemblies 3, wherein the handle member 1 is used for being held by a hand, the handle member 1 is hollow, two ends of the handle member are open, one open end of the handle member 1 can be used for a conducting wire electrically connected with the driving mechanism 2 to pass through, and the other open end of the handle member 1 can be used for extending out a cutting end of the cutter assemblies 3; the driving mechanism 2 is arranged in the handle member 1, the driving mechanism 2 comprises a driver 21 and a transmission member 22 connected with the driver 21, and an installation part 221 is arranged on the transmission member 22; the cutter assemblies 3 of the plurality of sets can be respectively connected with the handle piece 1, so that different cutter assemblies 3 can be respectively connected with the handle piece 1 for cutting, wherein each cutter assembly 3 of the plurality of sets comprises an inner cutter structure 31 and an outer cutter structure 32 which form cutting fit and a fit part 3121 matched with the mounting part 221, each cutter assembly 3 of the plurality of sets at least comprises a cutter assembly I and a cutter assembly II, each inner cutter structure 31 of the cutter assembly I and the cutter assembly II has a movable stroke which rotates relative to each corresponding outer cutter structure 32, the mounting part 221 is matched with the fit part 3121, so that the driver 21 drives the transmission piece 22 to rotate to drive the inner cutter structure 31 to rotate together, so that the inner cutter structure 31 can rotate relative to the outer cutter structure 32, and the cutter assembly 3 can form cutting along the circumferential direction; the inner knife structure 31 of the knife assembly one also has a reciprocating movement stroke along the axial direction of the handle member 1, specifically, a first contact portion is provided on the inner knife structure 31 of the knife assembly one, a second contact portion is provided on the outer knife structure 32 of the knife assembly one, the inner knife structure 31 rotates relative to the outer knife structure 32, drives the first contact portion to rotate together, and drives the inner knife structure 31 to reciprocate along the axial direction of the handle member 1 under the interaction of the first contact portion and the second contact portion, so that the knife assembly 3 can form a cutting action in the axial direction.

Therefore, when in use, if different tool bits need to be replaced to cut in different modes, only the tool assembly 3 needs to be replaced, the handle piece 1 and the tool assemblies 3 of different models can be matched for use, the tool assemblies 3 are more convenient to replace, the handle piece 1 does not need to be replaced for different cutting, the use cost is lower, in addition, in the operation process, the tool assemblies 3 can be flexibly replaced, and the operation is more convenient.

It will be appreciated that a suction hole may also be provided in one side of the handle member 1, which suction hole communicates with the interior of the inner blade structure 31, which suction hole is adapted to communicate with a suction device, and that the inner blade structure 31 and the outer blade structure 32 cooperate to cut, and that the cut soft tissue enters the inner blade structure 31 and is further sucked out by the suction device, when the medical planing device 100 is in normal operation. Wherein the suction device may be a vacuum pump or the like.

The first cutter assembly is a reciprocating cutter, the second cutter assembly is a rotary cutter, the inner cutter structure 31 of the rotary cutter only has a movable stroke rotating relative to the outer cutter structure 32, and the inner cutter structure 31 of the reciprocating cutter has a movable stroke rotating relative to the outer cutter structure 32 and also has a reciprocating movable stroke axially relative to the handle member 1 according to different cutting types or cutting modes.

Further, as shown in fig. 2 and 6, the inner cutter structure 31 of each cutter assembly 3 includes a first cutter tube 311 and a first cutter handle 312, the first cutter handle 312 is connected with the first cutter tube 311, the matching portion 3121 is provided on the first cutter handle 312, and the transmission member 22 of the driving mechanism 2 is connected with the first cutter handle 312 in a matching manner, so that when the driver 21 drives the transmission member 22 to rotate, the first cutter handle 312 can be driven to rotate, and the first cutter tube 311 is driven to rotate together; the outer cutter structure 32 of each cutter assembly 3 comprises a second cutter tube 321 and a second cutter handle 322, the second cutter handle 322 is connected with the second cutter tube 321, and the second cutter handle 322 is connected with the handle piece 1; wherein, first sword pipe 311 and second sword pipe 321 all are the cavity setting, and first sword pipe 311 and second sword pipe 321 all can stretch out from handle piece 1, the inboard of second sword pipe 321 is located to first sword pipe 311 rotation cover, the inboard of second handle of a knife 322 is located to first handle of a knife 312 rotation cover, drive first handle of a knife 312 through driver 21 and rotate and drive first sword pipe 311 and rotate for second sword pipe 321, thereby make first sword pipe 311 and second sword pipe 321 cut, and the tissue after the cutting can get into the inner tube side of first sword pipe 311, thereby suck through suction device, in order to realize the cutting.

Further, as shown in fig. 6, to better realize the movement of the first cutter tube 311 along the axial direction of the handle member 1, the inner cutter structure 31 of the reciprocating cutter further includes a connecting member 33 connecting the first cutter tube 311 and the first cutter handle 312, where the connecting member 33 is disposed in a substantially cylindrical shape, one end of the connecting member 33 is connected to the first cutter tube 311 in a communicating manner, and the other end of the connecting member 33 is connected to the first cutter handle 312 in a communicating manner, where the connecting member 33 is sleeved outside the first cutter handle 312, and a rotation-stopping fit is formed between the connecting member 33 and the first cutter handle 312, and the first cutter handle 312 and the connecting member 33 can be relatively slide-matched, for example, an end portion of the first cutter handle 312, where the connecting member 33 is matched with the connecting member 312, can be disposed in a non-circular shape (such as square, polygonal, etc.), so that the connecting member 33 can be rotated together when the first cutter handle 312 rotates, but in the axial direction along which the first cutter handle 312 is stationary relative to the handle member 1, so that the first cutter handle 312 can be always connected well with the transmission member 22, so that the connecting member 33 can be moved relative to the first cutter handle 312. Specifically, the first contact portion includes a clamping groove 331 disposed on the connecting member 33, where the clamping groove 331 extends along a circumferential direction of an outer peripheral side of the connecting member 33, and the notch is disposed radially outward of the connecting member 33, and the clamping groove 331 may be disposed in a full circle ring shape, or may be formed by a plurality of groove segments disposed at intervals, and the clamping groove 331 has at least two arc segments, where the two arc segments are disposed obliquely along an axial direction of the handle member 1, and an oblique direction of the two arc segments is opposite; the outer cutter structure 32 of the reciprocating cutter further comprises a clamping piece 34, the clamping piece 34 is connected with the second cutter handle 322 and is at least partially clamped in the clamping groove 331 to form the second contact portion, the driver 21 drives the first cutter handle 312 to rotate to drive the connecting piece 33 to rotate relative to the clamping piece 34, so that the clamping piece 34 can be abutted against two arc sections of the clamping groove 331, the clamping piece 34 can be abutted against the arc sections of the clamping groove 331, and therefore the connecting piece 33 can be displaced in the axial direction of the handle piece 1 to drive the connecting piece 33 to reciprocate in the axial direction of the handle piece 1, and accordingly the first cutter is driven to reciprocate in the axial direction of the handle piece 1 to form cutting in the axial direction of the handle piece 1.

Preferably, as shown in fig. 8, the clamping member 34 includes a clamping band 341 and a clamping protrusion 342 protruding from the clamping band 341, and a clamping hole is formed on the second tool handle 322, and the clamping protrusion 342 is clamped in the clamping hole, so that the clamping band 341 can be connected with the second tool handle 322 to keep stationary; the clamping groove 331 comprises two spiral groove sections which are arranged in a cross communication mode, the rotation directions of the two spiral groove sections are opposite, the clamp 341 is rotationally sleeved in the spiral groove sections, when the connecting piece 33 rotates, the two spiral groove sections can rotate relative to the clamp 341, so that the clamp 341 is propped against the groove side wall of the spiral groove section to drive the connecting piece 33 to generate displacement along the axial direction of the handle piece 1, and the first cutter tube 311 is driven to reciprocate along the axial direction of the handle piece 1.

Further, as shown in fig. 8, the inner cutter structure 31 of the reciprocating cutter further includes a first elastic telescopic member 313, two ends of the first elastic telescopic member 313 are respectively abutted against the first cutter handle 312 and the connecting member 33, so as to ensure that the connecting member 33 drives the first cutter handle 312 to reciprocate along the axial direction of the handle member 1 when reciprocating along the axial direction of the handle member 1, and the first cutter handle 312 is prevented from being separated from the driving member 22 by the first elastic telescopic member 313, so as to ensure that the first cutter handle 312 can be always connected with the driving member 22. Wherein the first elastic expansion member 313 may be provided as an expansion spring or an elastic rubber.

It can be understood that the first cutter tube 311 and the second cutter tube 321 are disposed in different moving manners, and the corresponding first cutter tube 311 and the second cutter tube 321 are disposed in different manners.

Since the first cutter tube 311 of the reciprocating cutter has a moving stroke in the axial direction of the handle member 1, it is preferable to provide cutting edges of the reciprocating cutter at the ends of the first cutter tube 311 and the second cutter tube 321 in the axial direction. Specifically, as shown in fig. 5 to 7, the first cutter tube 311 of the reciprocating cutter is provided in a cylindrical shape with both ends open, the first cutter tube 311 has a first connection end and a first cutting end which are provided opposite to each other in the axial direction thereof, and the first connection end is connected to the driving mechanism 2 and communicates with the suction device; the first cutting end extends out of the handle piece 1, one end of the first cutting end far away from the handle piece 1 is opened, a first cutting edge part is formed on the periphery of the opened part, and the tissue can be cut through the first cutting edge part; the second cutter tube 321 of the reciprocating cutter is in a cylindrical shape with one closed end, the second cutter tube 321 is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube 321, the second connecting end is connected with the handle piece 1, the second cutting end extends out of the handle piece 1, a cutting opening is formed in one side of the second cutting end along the circumferential direction of the second cutting end, a second cutting edge part is arranged on the inner side of the end part of the second cutting end in a protruding mode, and the first cutting edge part is opposite to the second cutting edge part and at least partially corresponds to the cutting opening. The first cutter tube 311 is driven by the driver 21 to reciprocate along the axial direction of the handle member 1, so that the first blade part can reciprocate at the cutting opening, and when cutting is performed, soft tissues can stretch into the cutting opening, so that the soft tissues are cut off by moving the first blade part to be close to the second blade part and fall into the inner side of the first cutter tube 311, and the cut soft tissues are sucked out by the suction device, so that the cutting purpose is realized.

For the rotary cutter, the cutting edge of the rotary cutter may be preferably provided on the peripheral side surfaces of the first cutter tube 311 and the second cutter tube 321. Specifically, as shown in fig. 2 to 4, the first cutter tube 311 of the rotary cutter is provided in a cylindrical shape with one end closed, the first cutter tube 311 has a first connection end and a first cutting end which are provided opposite to each other in the axial direction thereof, the first connection end is connected with the driving mechanism 2, the first cutting end is provided to extend out of the handle member 1, two first openings which are provided opposite to each other in the radial direction thereof are provided on the peripheral side of the first cutting end, the peripheral side of each first opening is provided in a zigzag shape, and the zigzag portions form cutting portions; the second cutter tube 321 of the rotary cutter is in a cylindrical shape with one closed end, the second cutter tube 321 is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube 321, the second connecting end is connected with the handle piece 1, the second cutting end extends out of the handle piece 1, one side of the second cutting end along the circumferential direction of the second cutting end is provided with a second opening, the circumferential side of the second opening is in a zigzag shape, when the first cutter tube 311 rotates, the two first openings can be respectively arranged corresponding to the second openings, the size of the second opening is larger than that of the first opening, and the first cutter tube 311 rotates relative to the second cutter tube 321, so that the zigzag part of the first cutter tube 311 can form cutting fit along the circumferential direction with the zigzag part of the second cutter tube 321, and when cutting is performed, soft tissues can be firstly made to extend into the first openings, so that the cut soft tissues can directly fall into the inner side of the first cutter tube 311 and be sucked out by the suction device; moreover, preferably, the first cutter tube 311 can rotate forward and backward and rotate in a switching manner, so that both sides of the first opening of the first cutter tube 311 can be cut, and soft tissues can be prevented from entering a gap between the first cutter tube 311 and the second cutter tube 321, so that the cutting effect is better.

Moreover, the medical planing device 100 further comprises an adjusting member 4, and the cutter assembly 3 is clamped on the handle member 1 and separated from the handle member 1 by the adjusting member 4, so that the cutter assembly 3 can be replaced more conveniently. Wherein, regulating part 4 activity is located on the outside of handle piece 1, and has the reciprocal stroke along the axial of handle piece 1, and handle piece 1 and outer sword structure 32 are connected to regulating part 4, and regulating part 4 moves along handle piece 1 to have with outer sword structure 32 looks joint in order to be fixed in the joint state on handle piece 1 with cutter package 3, and have the unblock state that separates with outer sword structure 32, when regulating part 4 is in the unblock state, cutter package 3 can deviate from on handle piece 1. Wherein, when the adjusting piece 4 is clamped with the outer cutter structure 32, the cutter assembly 3 can be completely fixed on the handle piece 1, so that the medical planing device 100 can be normally used; when the adjusting member 4 moves to be separated from the outer cutter structure 32, the cutter assembly 3 can be unlocked, so that the cutter assembly 3 can be separated from the handle member 1, and the cutter assembly 3 can be disassembled and assembled more conveniently.

Preferably, as shown in fig. 2 and 6, the adjusting member 4 includes a stop ring 41, an adjusting sleeve 42 and a second elastic telescopic member 43, where the stop ring 41 is fixedly sleeved on the outer side of the handle member 1 and is located at one end of the handle member 1 for extending the cutter assembly 3; the outer side of the handle piece 1 is provided with a shaft shoulder, the adjusting sleeve is annularly arranged, the adjusting sleeve 42 is movably sleeved on the outer side of the handle piece 1 and can slide along the extending direction of the handle piece 1, the adjusting sleeve 42 is positioned between the shaft shoulder and the stop ring 41, the shaft shoulder and the stop ring 41 are used for limiting the moving range of the adjusting sleeve 42, the adjusting sleeve 42 is provided with a clamping part 421, the handle piece 1 is provided with a through hole 121 penetrating the adjusting sleeve along the radial direction of the adjusting sleeve, the second elastic telescopic piece 43 is abutted between the handle piece 1 and the adjusting sleeve 42, the second handle 322 is provided with a buckling part 3221 matched with the clamping part 421, the buckling part 3221 is oppositely arranged with the through hole 121, and the adjusting sleeve 42 moves along the handle piece 1, so that the clamping part 421 is provided with a first state penetrating through the through hole 121 to be clamped with the buckling part 3221 and a second state separated from the buckling part 3221.

Preferably, the catching portion 3221 includes a groove 3221a provided on an outer circumferential side of the second handle 322, and the catching portion 421 includes a plurality of balls 4211 provided inside the adjustment member 4, the plurality of balls 4211 being arranged at intervals along a circumferential direction of the adjustment member 4. When the cutter assembly 3 is installed, the cutter assembly 3 can be extended into the handle member 1 from one end of the handle member 1 provided with the check ring 41, the cutter assembly 3 is rotated to enable the matching part 3121 on the first cutter handle 312 to be clamped in the installation part 221 of the transmission member 22, and when the ball 4211 is clamped in the groove 3221a in the extending process, a user can hear a click, so that the installation is indicated, the medical planing device 100 can be normally used, and at the moment, the second elastic telescopic member 43 is in a natural extension state; when the cutter assembly 3 is to be disassembled, the adjusting piece 4 can be pulled by one hand to compress the second elastic telescopic piece 43, so that the ball 4211 is separated from the groove 3221a, and the cutter assembly 3 is pulled by the other hand, so that the cutter assembly 3 is disassembled, and the operation is convenient; moreover, after the disassembly, the adjusting member 4 is not acted by external force any more, and the adjusting member 4 can be automatically reset to the first state under the action of the elastic restoring force of the second elastic telescopic member 43, so that when the cutter assembly 3 is installed again, the cutter assembly 3 can be better clamped on the second cutter handle 322 to be fixed. Wherein the second elastic expansion member 43 may be provided as an expansion spring.

Also, it is preferable that one of the above-described mounting portion 221 and fitting portion 3121 is provided as the snap-on projection 2211, and the other is provided as the snap-on groove 3121a. The transmission member 22 may be disposed in a column shape, one end is in driving connection with the driver 21 (such as a driving motor), the other end is provided with a plurality of engaging protruding portions 2211, preferably, the number of the engaging protruding portions 2211 is even, and correspondingly the number of the engaging grooves 3121a is also even, so that the connection transmission stability of the transmission member 22 and the first knife handle 312 is better, and thus the medical planing device 100 is more stable during operation. Of course, the number of the clamping grooves 3121a may be greater than the number of the clamping protrusions 2211, and a chamfer may be provided at the notch of the clamping groove 3121a so that the cutter assembly 3 is smoother when inserted on the transmission member 22.

The handle member 1 is preferably generally cylindrically configured for being held by a human hand. For convenience of manufacture, the handle member 1 comprises a first handle segment 11 and a second handle segment 12 which are connected, the driving mechanism 2 is located in the first handle segment 11, the adjusting member 4 and the stop ring 41 are arranged on the second handle segment 12, the second handle 322 can extend into the second handle segment 12, a sealing groove is arranged on the outer periphery side of the second handle 322, and the medical planing device 100 further comprises a sealing member 5, wherein the sealing member 5 is arranged in the sealing groove and is used for sealing a gap between the second handle 322 and the second handle segment 12 along the radial direction, so that the suction effect of the suction device is prevented from being influenced.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims (10)

1. A medical planing device, comprising:

the handle piece is arranged in a hollow manner;

the driving mechanism is arranged in the handle piece and comprises a driver and a transmission piece connected with the driver, and the transmission piece is provided with a mounting part;

a plurality of cutter assemblies, wherein the cutter assemblies can be respectively connected with the handle piece and comprise an inner cutter structure, an outer cutter structure and a matching part matched with the mounting part;

the inner knife structures of the first knife assembly and the second knife assembly are provided with a movable stroke corresponding to the inner knife structures of the first knife assembly and the second knife assembly, the inner knife structures of the first knife assembly are also provided with a reciprocating movable stroke along the axial direction of the handle piece, the inner knife structures of the first knife assembly are provided with first contact portions, the outer knife structures of the first knife assembly are provided with second contact portions, the inner knife structures of the first knife assembly rotate relative to the outer knife structures, the first contact portions are driven to rotate together, and the inner knife structures are driven to reciprocate along the axial direction of the handle piece under the interaction of the first contact portions and the second contact portions.

2. The medical planing device according to claim 1, wherein the first cutter assembly is a reciprocating cutter, the second cutter assembly is a rotary cutter, the inner cutter structure of each set of the cutter assemblies comprises a first cutter tube and a first cutter handle connected with the first cutter tube, and the matching part is arranged on the first cutter handle;

the outer cutter structures of the cutter assemblies comprise second cutter pipes and second cutter handles connected with the second cutter pipes, and the second cutter handles are connected with the handle pieces;

the first cutter tube and the second cutter tube are hollow, the first cutter tube and the second cutter tube can extend out of the handle piece, the first cutter tube is rotationally sleeved on the inner side of the second cutter tube, and the first cutter handle is rotationally sleeved on the inner side of the second cutter handle.

3. The medical planing device according to claim 2, wherein the inner cutter structure of the reciprocating cutter further comprises a connecting member connecting the first cutter tube and the first cutter handle, the first contact portion comprises a clamping groove provided on the connecting member, the clamping groove has at least two arc-shaped sections, the two arc-shaped sections are obliquely arranged along the axial direction of the handle member, and the oblique directions of the two arc-shaped sections are opposite; the outer cutter structure of the reciprocating cutter further comprises a clamping piece, wherein the clamping piece is connected with the second cutter handle and at least partially clamped in the clamping groove to form the second contact part, the driver drives the first cutter handle to rotate and drive the connecting piece to rotate relative to the clamping piece, so that the clamping piece can be abutted to the two arc sections of the clamping groove to drive the connecting piece to reciprocate along the axial direction of the handle piece.

4. A medical planing device according to claim 3, wherein said clamping groove comprises two helical groove segments disposed in cross communication, the directions of rotation of said helical groove segments being opposite;

the clamping piece comprises a clamp and a clamping protrusion protruding from the clamp, the clamp is rotationally sleeved in the spiral groove section, a clamping hole is formed in the second handle, and the clamping protrusion is clamped in the clamping hole.

5. A medical planing device according to claim 3, wherein the inner cutter structure of the reciprocating cutter further comprises a first elastic telescopic member, and both ends of the first elastic telescopic member are respectively abutted against the first cutter handle and the connecting member.

6. A medical planing device according to claim 3, wherein the connector is arranged on the outer side of the first cutter handle in a sleeved mode, a rotation-stopping fit is formed between the connector and the first cutter handle, and the first cutter handle and the connector can slide relatively along the axial direction of the handle piece.

7. The medical planing device according to claim 2, wherein the first cutter tube of the reciprocating cutter is provided in a cylindrical shape with both ends open, the first cutter tube has a first connecting end and a first cutting end which are oppositely provided along the axial direction thereof, the first connecting end is connected with the driving mechanism, the first cutting end extends out of the handle member, and a first cutting edge is formed at one end of the first cutting end far away from the handle member;

the second cutter tube of the reciprocating cutter is in a cylindrical shape with one closed end, the second cutter tube is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube, the second connecting end is connected with the handle piece, the second cutting end extends out of the handle piece to be arranged, the second cutting end is in a closed shape, a cutting opening is formed in the periphery of the second cutting end, a second cutting edge part is convexly arranged on the inner side of the end part of the second cutting end, and the first cutting edge part is opposite to the second cutting edge part and at least partially corresponds to the cutting opening; and/or the number of the groups of groups,

the first cutter tube of the rotary cutter is in a cylindrical shape with one end closed, the first cutter tube is provided with a first connecting end and a first cutting end which are oppositely arranged along the axial direction of the first cutter tube, the first connecting end is connected with the driving mechanism, the first cutting end extends out of the handle piece to be arranged, a first opening is formed in one side along the circumferential direction of the first cutting end, and the circumferential side of the first opening is in a zigzag shape;

the second cutter tube of the rotary cutter is in one-end closed tubular arrangement, the second cutter tube is provided with a second connecting end and a second cutting end which are oppositely arranged along the axial direction of the second cutter tube, the second connecting end is connected with the handle piece, the second cutting end extends out of the handle piece, a second opening is formed in one circumferential side of the second cutting end, the circumferential side of the second opening is in a serrated arrangement, and the second opening corresponds to the first opening and the size of the second opening is larger than that of the first opening.

8. A medical planing device according to any one of claims 2 to 7, further comprising an adjustment member movably disposed on the outside of the handle member and having a reciprocating travel along the axial direction of the handle member, the adjustment member connecting the handle member and the outer blade structure, the adjustment member being movable along the handle member to have a clamped condition in which it is clamped with the outer blade structure to secure the blade assembly to the handle member, and an unlocked condition in which it is separated from the outer blade structure, the blade assembly being releasable from the handle member when the adjustment member is in the unlocked condition.

9. The medical planing device according to claim 8, wherein the outer peripheral side of the handle member is provided with a shoulder and a through hole; the adjusting member includes:

the check ring is fixedly sleeved on the outer side of the handle piece;

the adjusting sleeve is movably sleeved on the outer side of the handle piece and positioned between the shaft shoulder and the stop ring, and a clamping part is arranged on the adjusting sleeve;

the second elastic telescopic piece is abutted between the handle piece and the adjusting sleeve;

the second handle is provided with a buckling part matched with the buckling part, the buckling part and the through hole are oppositely arranged, and the adjusting sleeve moves along the handle piece, so that the buckling part is in a first state of penetrating through the through hole to be buckled with the buckling part and is in a second state of being separated from the buckling part.

10. A medical planing device according to any one of claims 1 to 7, wherein one of the mounting portion and the mating portion is provided as a snap-fit projection and the other is provided as a snap-fit recess.