CN216602989U

CN216602989U - Inner tube movement structure of planing device

Info

Publication number: CN216602989U
Application number: CN202122512117.6U
Authority: CN
Inventors: 夏华强; 包国华; 邵华良; 王磊; 蔺海; 陈尧松
Original assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Current assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-05-27
Anticipated expiration: 2031-10-19

Abstract

The utility model relates to the field of medical instruments. The inner tube movement structure of the planing device comprises a driving shaft and a driven shaft which are parallel to each other, wherein the driving shaft drives the driven shaft to move through a connecting piece, a lifting transmission structure and a rotating transmission structure are respectively installed on the driving shaft and the driven shaft, and the lifting transmission structure and the rotating transmission structure are both connected with an inner tube. The utility model provides an inner tube movement structure of a planing device, which can realize the simultaneous axial movement and rotation of an inner tube, has a stable structure and is convenient to operate; the problem of the planer structure that exists among the prior art complicated, can not realize axial and rotary motion simultaneously, operate inconvenient technique is solved.

Description

Inner tube movement structure of planing device

Technical Field

The utility model relates to the field of medical instruments, in particular to an inner tube movement structure of a planing device.

Background

The shaver is a medical instrument commonly used in the existing medical means, and is mainly used for cutting or grinding tissue or bone surfaces.

There is a plane cutter of tissues such as excision hysteromyoma, uterus polyp among the prior art, and the cavity inner tube is arranged in the outer tube, and the outer tube head end is equipped with the window, and the inner tube head end is equipped with the sword tooth, and the inner tube is driven through drive arrangement, can follow self center pin rotation, through the positive and negative rotation of motor, realizes the conversion of inner tube direction of rotation, and the inner tube connection has suction device, and the tissue that the sword tooth cut down is from the inner tube suction. Due to the large difference in properties of the sliced tissue, the prior art shavers are less effective in cutting certain hard, tough tissue. And the inner tube cannot rotate while moving axially. The rotation and the axial movement need to be controlled and operated respectively, and the operation time is prolonged.

Disclosure of Invention

The utility model provides an inner tube movement structure of a planing device, which can realize the simultaneous axial movement and rotation of an inner tube, has a stable structure and is convenient to operate; the problem of the planer structure that exists among the prior art complicated, can not realize axial and rotary motion simultaneously, operate inconvenient technique is solved.

The utility model also provides another inner tube movement structure of the planing device, which is convenient to assemble and disassemble, small in size and good in automation degree; the problem of the planer motor that exists external among the prior art, bulky, install and remove inconvenient technical problem is solved.

The technical problem of the utility model is solved by the following technical scheme: the inner tube movement structure of the planing device comprises a driving shaft and a driven shaft which are parallel to each other, wherein the driving shaft drives the driven shaft to move through a connecting piece, a lifting transmission structure and a rotating transmission structure are respectively installed on the driving shaft and the driven shaft, and the lifting transmission structure and the rotating transmission structure are both connected with an inner tube. The driving shaft is connected with the driving part, so that the inner tube can move axially and rotate by one driving part, the rotating speed of the inner tube and the axial movement speed can be respectively adjusted and controlled, the lifting transmission structure and the rotating transmission structure are arranged in a staggered mode and are mutually auxiliary, the size of the transmission structure is more compact, parts and space are saved, and the axial feeding and the rotating matching of the inner tube are more perfect by adjusting various parameters between the two transmission structures. The connecting structure between the two transmission structures can be various, the lifting transmission structure can drive the rotary transmission structure through gear meshing, and the rotary transmission structure can also drive the lifting structure synchronously through a worm and gear structure. The multiple requirements of the inner tube moving in the outer tube are realized in the shell through the lifting transmission structure and the rotating transmission structure, the operation time is reduced, and the operation convenience and safety are improved.

Preferably, the rotary transmission structure is installed on the driven shaft, a hollow through hole is formed in the middle of the driven shaft, the inner pipe is located in the driven shaft, and the driven shaft is connected with the inner pipe through the rotary connection structure. The driven shaft directly drives the inner tube to rotate, and the structure is simple.

Preferably, the rotary connecting structure comprises a protrusion fixed on the inner pipe, the driven shaft is provided with a clamping groove, and the protrusion is positioned in the clamping groove. The clamping groove formed in the driven shaft is matched with the protrusion of the inner pipe, on one hand, the driven shaft can drive the inner pipe to rotate, on the other hand, the clamping groove has certain axial length, and the length of the clamping groove is larger than the stroke of the axial movement of the inner pipe. When the inner pipe is ensured to rotate, the clamping groove provides a guiding function, and the lifting rod drives the inner pipe to move axially.

Preferably, the clamping groove is an open groove, the anti-pressing ring is installed at the opening of the clamping groove and is located on the driven wheel, the inner wall of the anti-pressing ring is provided with a limiting protrusion, the limiting protrusion is located in the clamping groove, and the shaft sleeve is sleeved outside the anti-pressing ring. The through-hole has been seted up at the middle part of driven shaft, and the inner tube cross-under is in the through-hole, fills in one and driven shaft internal diameter complex in the one end of driven shaft and prevents the clamping ring, prevents that the clamping ring can prop the cavity open, can not lead to two draw-in grooves pressurized deformation in the motion process for the guide rail width that the draw-in groove formed diminishes, thereby influences the axial motion of inner tube.

Preferably, the lifting transmission structure comprises a lifting rod, the lifting rod is positioned on the driving shaft and is connected with the inner pipe through a connecting rod, and the lifting rod is driven through the lifting connection structure. The lifting rod is fixed on the annular ring through a connecting rod, a structure similar to a bearing is arranged in the annular ring, the bearing is sleeved on the inner pipe, and the axial movement of the inner pipe is driven by the movement of the lifting rod.

Preferably, the lifting transmission structure comprises a lifting rod, the lifting rod is positioned on the driving shaft and is connected with the inner pipe through a connecting rod, and the lifting rod is driven through the lifting connection structure. The rotation of the bidirectional spiral structure drives the shifting fork to lift, the shifting fork drives the lifting rod to move axially, and the lifting rod drives the inner pipe to move axially.

Preferably, the connecting member is a gear set engaged with each other, the driving shaft is provided with a first driving gear and a second driving gear which are parallel to each other, the driven shaft is provided with a first driven gear and a second driven gear which are parallel to each other, the first driving gear is engaged with the first driven gear, the second driving gear is engaged with the second driven gear, the first driven gear is fixed on the driven shaft, and the second driven gear is fixed on the bidirectional spiral structure. The gear is used for driving, so that the structure is simple, and the transmission effect is good. The first driven gear and the second driven gear are spaced. The engagement of the second driven gear and the second driving gear mainly drives the bidirectional rotating structure to rotate, so as to drive the lifting rod to move axially. The bidirectional rotating structure and the driven shaft rotate independently and do not influence each other, so that the axial movement and the rotating movement of the inner pipe can be controlled independently and are not constrained and influenced by each other.

Of course, the inner tube may be connected to the driving shaft and driven by the driving shaft to rotate, and the lifting rod may be connected to the driven shaft. That is, the position of the parts on the driving shaft and the driven shaft is exchanged, which also belongs to the technical scheme of the utility model.

The driving shaft and the driven shaft are driven by gears or chain wheels or other modes.

Therefore, the inner tube movement structure of the planer of the present invention: the operation is convenient, drives the inner tube through lifting transmission structure and rotatory transmission structure and carries out axial motion and rotation, lets the flexibility of planer system better, improves operation efficiency, reduces the operation time, convenient control.

Drawings

Figure 1 is a perspective view of a planer of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is an enlarged top view of the inner tube movement structure of the present invention.

Fig. 4 is a schematic view of fig. 3 with the bi-directional helix removed.

Fig. 5 is a perspective view of the driven shaft.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, 2, 3 and 4, an inner tube movement structure of a planer includes a driving shaft 20 and a driven shaft 24 which are parallel to each other, the driving shaft 20 being connected to an output shaft of a motor 22 and driven by the motor 22. A first driving gear 19 and a second driving gear 18 are fixed to the driving shaft 20 in parallel with each other, and the first driving gear 19 is larger in diameter than the second driving gear 18. One end of the driving shaft 20 is sleeved with a sleeve 16, an axial guide groove 15 is formed in the outer circumferential surface of the sleeve 16, a lifting rod 14 is inserted into the sleeve, and a shifting fork 17 is fixed on the lifting rod 14.

A first driven gear 23 is fixed on the driven shaft 24, the first driven gear 23 is in meshing transmission with the first driving gear 19, and the first driving gear 19 drives the first driven gear 23 so as to drive the driven shaft 24 to rotate. The center of the driven shaft 24 is provided with a through hole, and the inner pipe penetrates through one end of the driven shaft and is connected with the suction device through the other end. Two axially arranged slots 31 are formed in the outer circumferential surface of the driven shaft 24 in parallel, and the two slots 31 are located on the same axial end surface (as shown in fig. 5). Two protrusions 32 on the same diameter are integrally formed on the outer circumferential surface of the inner tube 2, and the protrusions 32 are located in the catching grooves 31 so that the inner tube 2 follows the rotation when the driven shaft 24 rotates. One end of the driven shaft 24 is fixed with a first driven gear and is externally connected with a suction device 5 through a catheter joint sleeve, and the suction device 5 is connected with the inner pipe 2 in the driven shaft. The opening part at the draw-in groove of the other end of driven shaft 2 installs prevents clamping ring 28, prevents that the inner wall integrated into one piece of clamping ring 28 has spacing arch 30, and spacing arch 30 joint has axle sleeve 29 outside preventing clamping ring 28 in draw-in groove 31.

A bidirectional helical structure 26 is externally fitted over the driven shaft 24, and a forward thread and a reverse thread are arranged on the bidirectional helical structure 26. One end of the bidirectional helical structure 26 is integrally formed with a second driven gear 25, the second driven gear 25 is meshed with the second driving gear 18, the rotation of the second driving gear 18 drives the bidirectional helical structure 26 to rotate, but the rotation of the driven shaft 24 in the bidirectional helical structure is not influenced, and the bidirectional helical structure 26 and the driven shaft rotate independently. The shifting fork 17 penetrates through the guide groove 15 on the sleeve and then is connected with the bidirectional spiral structure 26, and the unidirectional rotation of the bidirectional spiral structure 26 can drive the shifting fork to move back and forth, so that the lifting rod 14 is driven to move axially. The lifting rod 14 is connected with the inner pipe through the connecting rod 13, and the lifting rod 14 is driven by the shifting fork 17 to move axially, so that the inner pipe 2 is driven to move axially.

The inner tube movement structure is mounted in a planer comprising a housing 4, the housing 4 having a chip mounted thereon. The shell 4 comprises an upper cover 7 and a lower cover 8 which are matched with each other, the upper cover 7 and the lower cover 8 form a containing cavity, a fixing ring 12 is connected to the small end of the shell after the upper cover 7 and the lower cover 8 are buckled, the small end of the shell after the buckling is connected with the fixing ring 12 through threads, the fixing ring 12 locks one end of the shell, and the outer tube 3 is connected with the fixing ring 12. The other ends of the upper cover 7 and the lower cover 8 are locked and fixed at the buckled big end through a casing cover 10 and a locking ring 11 which are matched with each other to form a complete casing. The outer shell can be externally connected with control equipment such as a mobile phone through a connector 6. Install transmission structure in shell 4, drive inner tube 2 through transmission structure and rotate and axial motion, inner tube 2 is located outer tube 3, has seted up opening 1 at the tip of outer tube 3, and inner tube 2 is operated through opening 1 department.

When the driving shaft 24 is driven to rotate, the motor 22 is started to drive the driving shaft 20 to rotate, the first driving gear 19 and the second driving gear 18 on the driving shaft 20 rotate, and the first driving gear 19 is in meshed transmission with the first driven gear 23. The driven shaft 24 rotates to rotate the inner tube 2. Meanwhile, the second driving gear 18 and the second driven gear 25 are in meshed transmission, the second driven gear 25 drives the bidirectional rotating structure 26 to rotate, and the shifting fork 17 moves back and forth in the axial direction when the bidirectional rotating structure 26 rotates, so that the inner pipe 2 is driven to move axially in the outer pipe 3.

Claims

1. An inner tube movement structure of a planer, characterized in that: the lifting transmission structure and the rotary transmission structure are respectively arranged on the driving shaft and the driven shaft, and are both connected with the inner pipe.

2. The inner tube moving structure of a planer according to claim 1, wherein: the rotary transmission structure is arranged on the driven shaft, a hollow through hole is formed in the middle of the driven shaft, the inner pipe is located in the driven shaft, and the driven shaft is connected with the inner pipe through the rotary connection structure.

3. The inner tube moving structure of a shaver as set forth in claim 2, wherein: the rotary connecting structure comprises a protrusion fixed on the inner pipe, a clamping groove is formed in the driven shaft, and the protrusion is located in the clamping groove.

4. The inner tube moving structure of a shaver as set forth in claim 3, wherein: the shown draw-in groove is the open slot, and the opening part of draw-in groove is installed and is prevented the clamping ring, prevents that the clamping ring is located from the driving wheel, prevents that the inner wall of clamping ring is equipped with spacing arch, and spacing arch is located the draw-in groove, has cup jointed the axle sleeve outside preventing the clamping ring.

5. The inner tube moving structure of a shaver as set forth in any one of claims 1 to 4, wherein: the lifting transmission structure comprises a lifting rod, the lifting rod is located on the driving shaft and is connected with the inner pipe through a connecting rod, and the lifting rod is driven through the lifting connection structure.

6. The inner tube moving structure of a shaver as set forth in claim 5, wherein: the lifting connection structure comprises a sleeve connected with the driving shaft, a guide groove is formed in the sleeve, the lifting rod is located in the sleeve, and a shifting fork is mounted at the end of the lifting rod; a bidirectional spiral structure is sleeved on the driven shaft, and the shifting fork penetrates through the guide groove to be matched with the bidirectional spiral structure.

7. The inner tube movement structure of a shaver as set forth in any one of claims 1 to 4, wherein: the connecting piece be intermeshing's gear train, the driving shaft on be equipped with first driving gear and the second driving gear that is parallel to each other, the driven shaft on be equipped with first driven gear and the second driven gear that is parallel to each other, first driving gear and the meshing of first driven gear, the meshing of second driving gear and second driven gear, first driven gear fixes on the driven shaft, second driven gear fixes on two-way helical structure.