CN116269661A - Medical soft tissue planing tool assembly - Google Patents

Abstract

The invention discloses a medical soft tissue planing planer tool assembly, which comprises a planer tool assembly, a speed reducer assembly, an outer shell, a suction device and an interface part, wherein the planer tool assembly comprises a hollow outer tool assembly and an inner tool assembly; the interface part comprises an inner interface and an outer interface, the inner interface is connected with the transmission gear set, the outer interface is fixedly connected with the reduction gearbox shell, the suction device comprises a negative pressure suction pipe, and the negative pressure suction pipe is communicated with the cavity of the inner knife assembly. According to the medical soft tissue planing planer tool assembly, the planer tool assembly and the driver are designed in a split mode, the communication path of the negative pressure suction pipe is changed, and the motor can be effectively protected from being damaged.

Description

Medical soft tissue planing tool assembly

Technical Field

The invention relates to the technical field of medical equipment, in particular to a medical soft tissue planing tool assembly

Background

The planing tool is a tool frequently used in minimally invasive endoscopic surgery, is mainly used for planing soft tissues in the surgeries such as otorhinolaryngology, articulation, urinary tract, gynecology and the like, is communicated with a negative pressure suction device through a negative pressure suction pipe, negative pressure is transmitted to the front end through a hollow cutter to suck the soft tissues into a knife edge, an outer cutter barrel of the cutter is fixed, and the cutter is driven by a motor to do reciprocating rotary motion, so that the soft tissues are cut off by the cutting end of the cutter. Most of the existing planing tools are designed into a whole with a handle, and are reused, a simple interface is designed on the cutter and is connected with the handle, and as the cutter is a disposable product, the negative pressure suction pipe is connected with the cutter through the inside of the handle, so that the suction channel after use is difficult to clean, the suction channel is easy to block after multiple times of use, and when the suction through pipe passes through the inside of the handle, leakage is easy to occur, and a motor in the handle is easy to damage, so that the use cost of the product is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problems that: the utility model provides a but cutter and handle split's structure makes negative pressure suction channel not link to each other with the cutter through the handle, can effectively protect the medical soft tissue planing planer tool subassembly of handle.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a soft tissue planing planer tool assembly for medical use, including planer tool assembly, reduction gear assembly, shell body, suction device, interface part, planer tool assembly contains hollow outer knife assembly and interior knife assembly, interior knife assembly cover is established in outer knife assembly, outer knife assembly and interior knife assembly's one end all are equipped with soft tissue inhalable opening, the reduction gear assembly is fixed in the shell body, the reduction gear assembly includes reduction gear housing and drive gear group, the other end of outer knife assembly with the reduction gear housing is connected, the other end and the drive gear group of interior knife assembly are connected; the interface part comprises an inner interface and an outer interface, the inner interface is connected with a transmission gear set, the outer interface is fixedly connected with a reduction gearbox shell, the interface component can transfer kinetic energy provided by a driver to the inner cutter component after being connected with the driver, the suction device comprises a negative pressure suction pipe, the negative pressure suction pipe is communicated with a cavity of the inner cutter component, and when the driver is connected to the planing tool component, the outer side of the suction pipe is contacted with the driver to take away part of heat of the driver.

Further, an assembly cavity for assembling the speed reducer assembly and the planing tool assembly is formed in the outer shell, an inner joint for connecting the driving device with the transmission gear set is formed on one side face of the outer shell facing the driving device, a first insertion hole for inserting the planing tool assembly therein is formed on one side face of the outer shell facing the planing tool assembly, the insertion ends of the outer tool assembly are fixedly arranged in the assembly cavity after passing through the first insertion hole, and the insertion ends of the inner tool assembly penetrate out of the insertion ends of the outer tool assembly to be exposed out of the outer tool assembly, and one section exposed out of the outer tool assembly is connected with the output end of the transmission gear set.

Further, the speed reducer shell comprises a left speed reducer box and a right speed reducer box which are arranged in the assembly cavity, and the transmission gear set comprises an input shaft which transversely penetrates through the left speed reducer box and the right speed reducer box and can rotate around the axis of the input shaft, a primary driving gear which is connected with the input shaft in a shaft mode, a transmission shaft which transversely penetrates through the left speed reducer box and the right speed reducer box and can rotate around the axis of the input shaft, a primary driven gear which is connected with the transmission shaft in a shaft mode and is meshed with the primary driving gear, a secondary driving gear which is connected with the primary driven gear in a shaft mode, and a secondary driven gear which is connected with the secondary driving gear in a shaft mode and is connected with the outer periphery of the outer cutter assembly in a sleeved mode.

Further, the left reduction gearbox and the right reduction gearbox both comprise a barrel which is coaxially arranged with the planing tool assembly, the left end of the barrel of the left reduction gearbox is assembled in the first insertion hole, the insertion end of the outer tool assembly extends into the barrel of the left reduction gearbox, the insertion end of the inner tool assembly extends out of the insertion end of the outer tool assembly and into the barrel of the right reduction gearbox, and the secondary driven gear is sleeved on the inner tool assembly and is positioned at the position between the left reduction gearbox and the right reduction gearbox.

Further, one end of the cylinder body of the left reduction gearbox, which is close to the first inserting hole, is provided with an outer cutter assembly assembling hole with a larger inner diameter, which is used for assembling an outer cutter assembly, the outer wall of the inserting end of the outer cutter assembly is connected with the hole wall of the outer cutter assembly assembling hole, and the cylinders of the left reduction gearbox and the right reduction gearbox are respectively provided with an inner cutter assembly assembling hole with a smaller inner diameter, which is used for assembling an inner cutter assembly, the inner diameter of the inner cutter assembly assembling hole is larger than the outer diameter of the inner cutter assembly so that the inner cutter assembly can rotate in the inner cutter assembly assembling hole.

Further, the adjacent ends of the cylinders of the left reduction gearbox and the right reduction gearbox are also provided with bearing assembly holes, the first bearings are assembled in the bearing assembly holes, the second-stage driven gear is positioned between the two first bearings and connected with the inner rings of the two first bearings, the inner cutter assembly is arranged in the inner rings of the two first bearings assembled on the two cylinders in a penetrating mode, and a sealing ring is arranged between the first bearings and the inner cutter assembly.

Further, the left reduction gearbox and the right reduction gearbox also comprise blocks vertically arranged on the cylinder body, two assembly holes are transversely formed in the blocks, two second bearings are arranged in the assembly holes, an assembly annular groove is further formed between the assembly holes of the right reduction gearbox and the second bearings, a sleeve is inserted in the assembly annular groove, the outer end of the sleeve extends out of the shell, and the input shaft penetrates through the sleeve and is connected with the inner rings of the two second bearings.

Further, the negative pressure suction pipe is arranged in the outer shell, one end of the negative pressure suction pipe stretches into the outer shell and is communicated with the inserting end of the inner knife assembly, and the other end of the negative pressure suction pipe is communicated with the negative pressure suction device.

Further, the negative pressure suction pipe and the inner knife assembly are coaxially arranged, an interval space is formed between the negative pressure suction pipe and the inner knife assembly, a suction through-stop valve is inserted in the position, corresponding to the interval space, of the shell, the suction through-stop valve is provided with a communication hole which is coaxially arranged with the inner knife assembly and the negative pressure suction pipe, and two ends of the communication hole can be communicated with the inner knife assembly and the negative pressure suction pipe after the suction through-stop valve rotates.

Further, the outer shell comprises a left shell and a right shell detachably combined with the left shell, the left reduction gearbox and the right reduction gearbox are respectively arranged in the left shell and the right shell, the right reduction gearbox is arranged in the right shell, and the inner interface and the first inserting hole are respectively arranged on the left shell and the right shell.

According to the medical soft tissue planing planer tool assembly, the planer tool body and the driver are designed in a split mode, so that the flexibility of the planer tool is improved; the communication path of the negative pressure suction pipe is changed, so that the negative pressure suction pipe is inserted into the shell and is directly communicated with the planing tool assembly, the negative pressure suction pipe and the planing tool assembly are coaxially arranged, the linear arrangement mode reduces the path length of the negative pressure suction pipe, reduces the assembly difficulty of the negative pressure suction pipe, and increases the negative pressure adsorption effect; when the negative pressure suction tube is cleaned, the negative pressure suction tube does not enter the driver, so that the risks that liquid enters the driver and damages the motor are avoided; the driver does not have the function of connecting the planing tool component and the negative pressure suction pipe any more, and only has a simple driving function, so that the service life of the driver can be prolonged; the outer shell is designed into a detachable and involutive two-half shell structure, so that the planer tool component, the speed reducer component and the suction component are convenient to assemble; the suction through-stop valve is designed into a rotary structure, and can be used for stopping the planing tool assembly and the negative pressure suction pipe according to actual requirements.

Drawings

Fig. 1 is a schematic view of the structure of an embodiment of a medical soft tissue planing tool assembly of the present invention.

Fig. 2 is an exploded view of one embodiment of a medical soft tissue planing tool assembly of the present invention.

Fig. 3 is an assembly view of a blade body, a planing tool assembly and a transmission gear set in an embodiment of the medical soft tissue planing tool assembly of the present invention.

Fig. 4 is a schematic view showing the structure of a left reduction box and a right reduction box in an embodiment of the soft tissue planing tool assembly for medical use according to the present invention.

Fig. 5 is a schematic view of the structure of the suction through-stop valve in one embodiment of the medical soft tissue planing tool assembly of the present invention.

The meaning of the reference numerals in the drawings are:

an outer case 100; an internal interface 101; a first insertion hole 102; a fitting chamber 110; a left housing 120; a butt-joint step portion 121; a right housing 130; a complementary step 131; a ring case 132; a right end case 133; a cartridge housing 134; a second insertion hole 1341; a half shell 135; supporting the limit rib 1351; a first transfer hole 1352;

a drive gear set 200; a left reduction gearbox 210; a left cylinder 211; an inner cutter assembly fitting hole 211a; an outer cutter assembly fitting hole 211b; a left bearing fitting hole 211c; a first seal ring 211d; a left block 212; a left fitting hole 212a; a left shaft hole 212b; a top stopper 213; a first bearing 214; a second bearing 215; a spacing space 216; a right reduction gearbox 220; a right cylinder 221; an inner cutter assembly fitting hole 221a; a right bearing assembly hole 221c; a second seal ring 221d; a second transfer hole 221e; a right block 222; a right fitting hole 222a; a right shaft hole 222b; a first bearing 224; a second bearing 225; an input shaft 230; a fitting groove 231; a primary drive gear 240; a drive shaft 250; a primary driven gear 260; a secondary drive gear 270; a secondary driven gear 280;

a planer tool assembly 300; an outer knife assembly 310; an inner knife assembly 320;

a negative pressure suction tube 400; a spacing space 410; a suction through-stop valve 420; a communication hole 421; a blocking piece 423; a stop 424; a third annular groove 425; a third seal ring 426; ring 427.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 5, the medical soft tissue planing planer tool assembly of the present invention comprises a planer tool assembly 300, a decelerator assembly, an outer housing 100, a suction device and an interface part, wherein the planer tool assembly 300 comprises a hollow outer tool assembly 310 and an inner tool assembly 320, the inner tool assembly 320 is sleeved in the outer tool assembly 310, one ends of the outer tool assembly 320 and the inner tool assembly 310 are respectively provided with an opening capable of sucking soft tissue, the decelerator assembly is fixed in the outer housing, the decelerator assembly comprises a decelerator housing and a transmission gear set 200, the other end of the outer tool assembly 320 is connected with the decelerator housing, and the other end of the inner tool assembly 320 is connected with the transmission gear set 200; the interface part comprises an inner interface 101 and an outer interface (not shown) which are connected with the transmission gear set 200, the outer interface is fixedly connected with the reduction box shell, the interface component can be connected with the driver to transfer kinetic energy provided by the driver to the inner planing tool, the suction device comprises a negative pressure suction pipe 400, the negative pressure suction pipe 400 is communicated with a cavity of the inner planing tool component 310, and when the driver is connected with the planing tool component 300, part of heat of the driver can be taken away by the contact of the outer side of the suction pipe with the driver.

The outer housing 100 is internally provided with an assembling cavity 110 for assembling the transmission gear set 200 and the planer tool assembly 300, one side surface of the housing facing the driver is provided with an inner interface 101 for the driver to be connected with the transmission gear set 200 in a shaft mode, one side surface of the housing facing the planer tool assembly 300 is provided with a first inserting hole 102 for inserting the planer tool assembly 300 therein, and the first inserting hole 102 is used for inserting the inserting end of the planer tool assembly 300 into the assembling cavity 110.

The outer casing includes a left casing 120 and a right casing 130 detachably engaged with the left casing 120, the left casing 120 is defined as a half casing close to one side of the planer tool assembly 300 and having an opening facing the negative pressure suction pipe 400 (hereinafter referred to as right side), a docking step 121 is formed on an outer wall of one end (right side) of the left casing 120 facing the right side, the right casing 130 is defined as a half casing close to one side of the negative pressure suction pipe 400 and having an opening facing the left casing 120, a complementary step 131 for docking the docking step 121 is formed on an inner wall of one end (left side) of the right casing 130 facing the left side, and after the complementary step 131 is in concave-convex complementary engagement with the docking step 121, the outer wall of the right side of the left casing 120 and the outer wall of the left side of the right casing 130 are smoothly transited to form an arc surface or plane.

The whole left housing 120 is in a cover structure gradually enlarged from left to right, the front view of the left housing is in a shape similar to a fish head, an umbrella shape or a bullet shape, the cross section of the left housing is approximately circular, the left end of the left housing is limited to be a small end or a tip, the first insertion hole 102 transversely penetrates through the left end wall of the left housing 120, the bottom surface of the left housing 120 is in a shape similar to a straight shape, and the top surface of the left housing is in a shape of a right upward arc. The space in the left housing 120 occupies most of the space in the entire assembly chamber 110, that is, more than 1/2 of the space in the entire assembly chamber 110, for example, 90% of the space in the entire assembly chamber 110.

The right housing 130 has a ring housing 132 with a shape and size adapted to the shape and size of the right end of the left housing 120, a right end housing 133 sealed at the right end of the ring housing 132, a cylinder housing 134 (referred to as a cylindrical housing) disposed on the right side surface of the right end housing 133, and a half-pipe housing 135 disposed on the right side of the cylinder housing 134. The right end shell 133 is provided with the inner joint 101. The inner space of the cylinder housing 134 is left through the cylinder housing 134 and the right end housing 133 to communicate with the inner space of the ring housing 132, the cylinder housing 134 is located below the inner joint 101 and is located at the same level as the small end of the left housing 120, and a second insertion hole 1341 is formed in the right end wall of the cylinder housing 134, into which the negative pressure suction pipe 400 is inserted. The half pipe shell 135 is defined as a lower half shell structure in which an upper half shell is cut and removed along a longitudinal section thereof, a left end of the half pipe shell 135 is connected to a right end of the cylinder shell 134, and a supporting and limiting rib 1351 (see fig. 1) for supporting and limiting the negative pressure suction pipe 400 is provided on an inner wall surface of the half pipe shell 135.

The reducer housing comprises a left reduction gearbox 210 and a right reduction gearbox 220 which are arranged in the assembly cavity 110, the transmission gear set 200 comprises an input shaft 230 which transversely penetrates through the left reduction gearbox 210 and the right reduction gearbox 220 and can rotate around the axes of the input shaft 230, a primary driving gear 240 which is connected with the input shaft 230 in a shaft way, a transmission shaft 250 which transversely penetrates through the left reduction gearbox 210 and the right reduction gearbox 220 and can rotate around the axes of the transmission shaft 250, a primary driven gear 260 which is connected with the transmission shaft 250 in a shaft way and is meshed with the primary driving gear 240, a secondary driving gear 270 which is connected with the primary driven gear 260 in a shaft way, and a secondary driven gear 280 which is sleeved on the planer tool assembly 300 and inserted into the outer periphery of one section of the assembly 110, the outer end of the input shaft 230 outwards penetrates through the inner joint 101 to be detachably connected with the output end of the driver, and one section of the input shaft 230, which is positioned between the left reduction gearbox 210 and the right reduction gearbox 220, is used for sleeving the primary driving gear 240 to transfer rotation to the primary driving gear 240, and the secondary driven gear 280 are sleeved on the planer tool assembly 300 to reciprocate to the primary driven gear 240, and the planer tool assembly 300 so that the planer tool assembly rotates to reciprocate to the primary driven gear 240.

The left reduction gearbox 210 has a left cylinder 211 coaxially disposed with the first insertion hole 102, and a left block 212 forming a right end of the left cylinder 211, wherein a right end surface of the left block 212 is in the same plane with a right end surface of the left cylinder 211. The left end outer wall of the left cylinder 211 is inserted into the first insertion hole 102, the left cylinder 211 has an inner cutter assembly hole 211a penetrating along an axial direction thereof for assembling an inner cutter assembly of the planer tool assembly 300, and the left end of the left cylinder 211 is formed with an outer cutter assembly hole 211b having an inner diameter larger than that of the inner cutter assembly hole 211a, the outer cutter assembly hole 211b being coaxial with the inner cutter assembly hole 211 a. The right end of the left cylinder 211 is formed with a left bearing assembly hole 211c which is coaxial with the inner cutter assembly hole 211a and has an inner diameter larger than that of the inner cutter assembly hole 211a, a first bearing 214 is assembled in the left bearing assembly hole 211c, the left end of the left bearing assembly hole 211c is also coaxially provided with a first annular groove having an inner diameter larger than that of the inner cutter assembly hole 211a and smaller than that of the left bearing assembly hole 211c, and a first sealing ring 211d is assembled in the first annular groove.

The left block 212 is provided with a left assembly hole 212a and a left shaft hole 212b from top to bottom in sequence, the left assembly hole 212a is coaxially arranged with the inner joint 101, a second bearing 215 is assembled in the left assembly hole 212a, the left shaft hole 212b is used for the left end of the transmission shaft 250 to be assembled therein, and the axes of the left assembly hole 212a and the left shaft hole 212b are parallel to the axis of the left cylinder 211. The upper end of the left block 212 extends to the right to form a top stop 213, the right end surface of the top stop 213 protrudes from the right end surface of the left block 212, and the right end surface of the top stop 213 abuts against the left end surface of the right reduction gearbox 220, so that a space 216 is formed between the right end surface of the left block 212 and the left end surface of the right reduction gearbox 220, and the primary driving gear 240, the primary driven gear 260, the secondary driving gear 270 and the secondary driven gear 280 are all assembled in the space 216.

The right reduction gearbox 220 has a right cylinder 221 coaxially disposed with the left cylinder 211, and a right block 222 forming the left end of the right cylinder 221, wherein the left end surface of the right block 222 is located on the same plane as the left end surface of the right cylinder 221. The right end of the right cylinder 221 extends into the cylinder housing 134, the right cylinder 221 has an inner cutter assembly hole 221a penetrating along the axial direction thereof for assembling the inner cutter assembly of the planing tool assembly 300, the left end of the right cylinder 221 is formed with a right bearing assembly hole 221c coaxial with the inner cutter assembly hole 221a and having an inner diameter larger than that of the inner cutter assembly hole 221a, the right bearing assembly hole 221c is assembled with a first bearing 224, the right end of the right bearing assembly hole 221c is also coaxially provided with a second annular groove having an inner diameter larger than that of the inner cutter assembly hole 221a and smaller than that of the right bearing assembly hole 221c, and the second annular groove is assembled with a second sealing ring 221d.

The right block 222 is sequentially provided with a right assembly hole 222a and a right shaft hole 222b from top to bottom, the right assembly hole 222a and the right shaft hole 222b are symmetrically arranged with the left assembly hole 212a and the left shaft hole 212b, a second bearing 225 is assembled in the right assembly hole 222a, an assembly ring groove is formed between the second bearing 225 and the right assembly hole 222a, a sleeve is inserted in the assembly ring groove, the outer end of the sleeve extends out of the shell, and the input shaft 230 is arranged in the sleeve in a penetrating manner and is connected with the inner rings of the two second bearings 215 and 225.

The input shaft 230 has a large diameter section with a larger diameter and a small direct section with a smaller diameter, the large diameter section is arranged in the inner interface 101 in a penetrating way, the outer end of the large diameter section is provided with an assembly groove 231 detachably connected with the output shaft of the driver, the small diameter section is arranged in the inner ring of the second bearing 225 in the right assembly hole 222a and the inner ring of the second bearing 215 in the left assembly hole 212a in a penetrating way, and the primary driving gear 240 is arranged on the small diameter section in a surrounding way and is positioned on the outer circumference of the section of the interval space 216. The left and right ends of the transmission shaft 250 are respectively assembled in the left shaft hole 212b and the right shaft hole 222b, the secondary driving gear 270 is a section of the transmission shaft 250 that is located in the spacing space 216, the primary driven gear 260 is annularly mounted on the secondary driving gear 270, and the secondary driven gear 280 is annularly mounted on the planer tool assembly 300 that is located in a section of the spacing space 216, that is, the secondary driven gear 280 is located between the two first bearings 214 and 224 and is connected with the inner rings of the two first bearings 214 and 224.

The planer tool assembly 300 comprises an outer tool assembly 310 fixedly arranged on the tool body 100 and an inner tool assembly 320 arranged in the outer tool assembly 310 and capable of rotating around the axis thereof, the shape and structure of the outer tool assembly 310 and the shape and structure of the inner tool assembly 320 are matched, the inner diameter of the outer tool assembly 310 is larger than the outer diameter of the inner tool assembly 320, the length of the outer tool assembly 310 is smaller than the length of the inner tool assembly 320, and therefore the inner tool assembly 320 can rotate reciprocally when assembled in the outer tool assembly 310, the insertion end (right end) of the inner tool assembly 320 extends out of the outer tool assembly 310 to the right, and the inner tool assembly 320 is arranged in the inner rings of the two first bearings 214 and 224 assembled in the two cylinders in a penetrating manner.

The opening ends (left ends) of the outer knife assembly 310 and the inner knife assembly 320 are respectively provided with a knife edge 330, knife teeth are arranged at the knife edges 330, the knife edges 330 are communicated with the inner space of the knife cylinder, the inserting ends of the outer knife assembly 310 and the inner knife assembly 320 are respectively provided with an opening, the inner knife assembly 320 extends out of the outer knife assembly 310 from the opening of the outer knife assembly 310, and the opening of the inner knife assembly 320 can enable the knife edges 330 to be communicated with the negative pressure suction pipe 400. The construction of the planing tool assembly 300 is described with reference to the prior art and will not be described in detail herein.

The insertion end of the outer cutter assembly 310 extends into the cylinder of the left reduction gearbox 210, and the outer wall of the insertion end of the outer cutter assembly 310 is connected with the wall of the outer cutter assembly hole 211 b. The insertion end of the inner cutter assembly 320 is inserted into the inner cutter assembly mounting holes 221a of the left reduction gearbox 210 and the right reduction gearbox 220 from the insertion end of the outer cutter assembly 310, and the inner diameter of the inner cutter assembly mounting holes 221a is larger than the outer diameter of the inner cutter assembly 320 so that the inner cutter assembly 320 can rotate in the inner cutter assembly mounting holes 221 a. The secondary driven gear 280 is sleeved on the inner cutter assembly 320 at a position (at the interval space 216) between the left reduction gearbox 210 and the right reduction gearbox 220.

The negative pressure suction pipe 400 is disposed in the half pipe shell 135 and is supported and limited by the supporting and limiting rib 1351. The negative pressure suction pipe 400 is coaxially arranged with the inner knife assembly 320, one end of the negative pressure suction pipe 400 extends into the housing and is communicated with the insertion end of the inner knife assembly 320, and the other end of the negative pressure suction pipe 400 is communicated with a negative pressure suction device (not shown). Specifically, one end of the negative pressure suction pipe 400 sequentially passes through the second insertion hole 1341 of the right end wall and the opening of the right cylinder 221, and then extends into the right cylinder 221, and a space 410 is formed between the negative pressure suction pipe and the inner knife assembly 320 in the right cylinder 221. A suction through-stop valve 420 is inserted in the housing at a position corresponding to the space 410, the suction through-stop valve 420 has a communication hole 421 coaxially provided with the inner knife assembly 320 and the negative suction pipe 400, and both ends of the communication hole 421 can communicate with the inner knife assembly 320 and the negative suction pipe 400 after the suction through-stop valve 420 rotates. Specifically, the half tube shell 135 of the right housing 130 is provided with a first adapting hole 1352 for adapting the suction passing valve 420, an axis of the first adapting hole 1352 is perpendicular to an axis of the half tube shell 135, the right tube 221 is provided with a second adapting hole 221e coaxial with the first adapting hole 1352, the suction passing valve 420 is provided with an adapting shaft 422 penetrating through the first adapting hole 1352 and the second adapting hole 221e, a blocking piece 423 disposed on an outer end surface of the adapting shaft 422 to block the outer surface of the first adapting hole 1352, a ring piece 427 disposed on the adapting shaft 422 and located in the second adapting hole 221e, and a passing portion 424 disposed at an inner end of the adapting shaft 422, and the communication hole 421 is disposed on the passing portion 424. The outer end surface of the through-stop portion 424, a section of the switching shaft 422 located between the through-stop portion 424 and the ring piece 427, and the ring piece 427 are enclosed to form a third ring groove 425, and a third sealing ring 426 for sealing the second switching hole 221e is installed in the third ring groove 425.

According to the medical soft tissue planing planer tool assembly, the planer tool body and the driver are designed in a split mode, so that the flexibility of the planer tool is improved; the communication path of the negative pressure suction pipe is changed, so that the negative pressure suction pipe is inserted into the cutter body and is directly communicated with the planing tool assembly in the cutter body, the negative pressure suction pipe and the planing tool assembly are coaxially arranged, the linear arrangement mode reduces the path length of the negative pressure suction pipe, reduces the assembly difficulty of the negative pressure suction pipe, and increases the negative pressure adsorption effect; when the negative pressure suction tube is cleaned, the negative pressure suction tube does not enter the driver, so that the risks that liquid enters the driver and damages the motor are avoided; the driver does not have the function of connecting the planing tool component and the negative pressure suction pipe any more, and only has a simple driving function, so that the service life of the driver can be prolonged; the shell of the cutter body is designed into a detachable and involutive two-half shell structure, so that the planer cutter assembly, the transmission gear set and the negative pressure suction pipe are convenient to assemble; the suction through-stop valve is designed into a rotary structure, and can be used for stopping the planing tool assembly and the negative pressure suction pipe according to actual requirements.

The foregoing is merely exemplary of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the present invention.

Claims (10)

1. A medical soft tissue planing tool assembly, characterized in that: the planing tool comprises a planing tool assembly, a speed reducer assembly, an outer shell, a suction device and an interface part, wherein the planing tool assembly comprises a hollow outer tool assembly and an inner tool assembly, the inner tool assembly is sleeved in the outer tool assembly, one ends of the outer tool assembly and the inner tool assembly are respectively provided with an opening capable of sucking soft tissues, the speed reducer assembly is fixed in the outer shell, the speed reducer assembly comprises a speed reducer shell and a transmission gear set, the other end of the outer tool assembly is connected with the speed reducer shell, and the other end of the inner tool assembly is connected with the transmission gear set; the interface part comprises an inner interface and an outer interface, the inner interface is connected with a transmission gear set, the outer interface is fixedly connected with a reduction gearbox shell, the interface component can transfer kinetic energy provided by a driver to the inner cutter component after being connected with the driver, the suction device comprises a negative pressure suction pipe, the negative pressure suction pipe is communicated with a cavity of the inner cutter component, and when the driver is connected to the planing tool component, the outer side of the negative pressure suction pipe is contacted with the driver to take away part of heat of the driver.

2. A medical soft tissue planing tool assembly according to claim 1, wherein: the assembly cavity is formed in the outer shell and used for assembling the speed reducer assembly and the planing tool assembly, an inner joint used for connecting the driving device with the transmission gear set is arranged on one side face of the outer shell, a first insertion hole used for inserting the planing tool assembly therein is formed in one side face of the outer shell, the insertion ends of the outer tool assembly penetrate through the first insertion hole and then are fixedly arranged in the assembly cavity, and the insertion ends of the inner tool assembly penetrate out of the insertion ends of the outer tool assembly to be exposed out of the outer tool assembly, and one section exposed out of the outer tool assembly is connected with the output end of the transmission gear set.

3. A medical soft tissue planing tool assembly according to claim 1, wherein: the speed reducer shell comprises a left speed reducer box and a right speed reducer box which are arranged in the assembly cavity, wherein the transmission gear set comprises an input shaft which transversely penetrates through the left speed reducer box and the right speed reducer box and can rotate around the axis of the input shaft, a primary driving gear which is connected with the input shaft in a shaft mode, a transmission shaft which transversely penetrates through the left speed reducer box and the right speed reducer box and can rotate around the axis of the left speed reducer box and the right speed reducer box, a primary driven gear which is connected with the transmission shaft in a shaft mode and is meshed with the primary driving gear, a secondary driving gear which is connected with the primary driven gear in a shaft mode, and a secondary driven gear which is connected with the secondary driving gear in a shaft mode and is meshed with the secondary driving gear in a sleeved mode, wherein the primary driving gear is exposed out of the outer periphery of the outer cutter assembly.

4. A medical soft tissue planing tool assembly according to claim 3, wherein: the left reduction gearbox and the right reduction gearbox both comprise a barrel which is coaxially arranged with the planing tool assembly, the left end of the barrel of the left reduction gearbox is assembled in the first insertion hole, the insertion end of the outer tool assembly stretches into the barrel of the left reduction gearbox, the insertion end of the inner tool assembly stretches out of the insertion end of the outer tool assembly and stretches into the barrel of the right reduction gearbox, and the secondary driven gear is sleeved on the inner tool assembly and is positioned at the position between the left reduction gearbox and the right reduction gearbox.

5. A medical soft tissue planing tool assembly according to claim 4, wherein: the cylinder body of left reducing gear box is close to the one end of first insertion hole has the external cutter subassembly pilot hole that is used for assembling external cutter subassembly's internal diameter great, external cutter subassembly's insertion end outer wall with external cutter subassembly pilot hole's pore wall is connected, the cylinder body of left reducing gear box and right reducing gear box all has and is used for assembling the internal cutter subassembly pilot hole that the internal diameter of internal cutter subassembly is less, the internal diameter of internal cutter subassembly pilot hole is greater than the external diameter of internal cutter subassembly is so that the internal cutter subassembly can be in internal cutter subassembly pilot hole internal rotation.

6. A medical soft tissue planing tool assembly according to claim 4, wherein: the adjacent ends of the cylinders of the left reduction gearbox and the right reduction gearbox are also provided with bearing assembly holes, the two bearing assembly holes are respectively provided with a first bearing, the secondary driven gear is positioned between the two first bearings and connected with the inner rings of the two first bearings, the inner cutter assembly penetrates through the inner rings of the two first bearings assembled on the two cylinders, and a sealing ring is arranged between the first bearings and the inner cutter assembly.

7. A medical soft tissue planing tool assembly according to claim 4, wherein: the left reduction gearbox and the right reduction gearbox also comprise blocks which are vertically arranged on the cylinder body, two assembly holes are transversely formed in the blocks, a second bearing is arranged in each assembly hole, an assembly annular groove is further formed between each assembly hole of the right reduction gearbox and the second bearing, a sleeve is inserted in each assembly annular groove, the outer end of each sleeve extends out of the corresponding shell, and the input shaft penetrates through the corresponding sleeve and is connected with the inner ring of the corresponding second bearing.

8. A medical soft tissue planing tool assembly according to claim 1, wherein: the negative pressure suction pipe is arranged in the outer shell, one end of the negative pressure suction pipe stretches into the outer shell and is communicated with the inserting end of the inner knife assembly, and the other end of the negative pressure suction pipe is communicated with the negative pressure suction device.

9. A medical soft tissue planing tool assembly according to claim 1, wherein: the negative pressure suction pipe with the coaxial setting of inner knife subassembly, just negative pressure suction pipe with have an interval space between the inner knife subassembly, the casing is last to correspond the position department in interval space has inserted one and has been sucked and have been led to the check valve, suck to lead to the check valve have with the coaxial intercommunicating pore that sets up of inner knife subassembly and negative pressure suction pipe, the both ends of intercommunicating pore can be in suction to lead to the check valve rotatory back with inner knife subassembly and negative pressure suction pipe intercommunication.

10. A medical soft tissue planing tool assembly according to claim 3, wherein: the shell body comprises a left shell body and a right shell body detachably matched with the left shell body, the left reduction gearbox and the right reduction gearbox are respectively arranged in the left shell body and the right shell body, the right reduction gearbox is arranged in the right shell body, and the inner interface and the first inserting hole are respectively arranged on the left shell body and the right shell body.

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