CN219814247U - Suction cutter - Google Patents

Abstract

The utility model provides an attraction cutter, which comprises a cutting part, a transmission part, a negative pressure part and a collecting part, wherein the cutting part comprises a pipe body, a notch arranged on the side wall of the pipe body and a cutter capable of rotating in the pipe body, and the rotating cutter can enable the blade end of the cutter to slide through the notch so as to cut polyps sliding into the pipe body from the notch. The transmission part comprises a shell, a driving piece arranged outside the shell and a transmission assembly connected with the driving piece, wherein the transmission assembly is connected with one end of the cutter, which is far away from the incision, and the driving piece drives the transmission assembly to drive the cutter to rotate. The negative pressure part is arranged on one side of the shell away from the cutting part and is positioned between the transmission assembly and the driving piece. The driving piece extrudes the negative pressure part when driving the transmission assembly, so that the negative pressure part generates negative pressure. The collecting part is arranged below the shell, the tube body is communicated with the shell, and polyps cut by the cutting edge fall into the tube body and then fall into the collecting part for collection due to the attraction of the negative pressure part.

Description

Suction cutter

Technical Field

The utility model relates to the field of otorhinolaryngological surgical instruments, in particular to an aspiration cutter.

Background

At present, most nasal cavity and paranasal sinus operations are performed in a minimally invasive manner under the monitoring of a nasal endoscope. In the case of endoscopic nasal surgery, the surgeon needs to hold the endoscope in one hand and the surgical instrument in the other hand, i.e. the surgeon operates the instrument with one hand during the surgery. Because the instrument can be operated by one hand, a doctor usually cuts off the pathological tissue by using the nasal sinus forceps, withdraws the nasal sinus forceps, and changes the nasal sinus forceps into an aspirator to suck out the cut pathological tissue and blood clot. The method needs to replace the nasal sinus forceps and the aspirator continuously, so that the efficiency is low, when the bleeding in the operation area is more, the operation vision is not clear due to the fact that fresh blood is not sucked out, the anatomical structure is difficult to identify, the operation progress is affected, and important structures such as brain tissues, internal carotid arteries and the like are damaged seriously, so that fatal complications are caused. CN200610050359.5 (medical surgical suction cutter) discloses a surgical suction cutter, which can remove pathological tissues and suck out fresh blood and tissue fragments in an operation area without repeatedly replacing instruments, thereby improving the working efficiency. However, the suction cutter not only needs an external power supply to supply power, but also needs external negative pressure equipment to provide negative pressure, and the whole set of equipment comprises a host, a host support frame, an external power line, an external negative pressure pipeline, a foot switch, a cutter handle, a cutter head and other parts, so that the equipment has the problems of complex structure, long time consumption in assembly and connection, high manufacturing cost, repeated disinfection and repeated use and the like, thereby influencing the popularization and application of the equipment.

In view of this, it is a technical problem in the art to make the use of suction cutters more convenient.

Disclosure of Invention

The utility model aims to provide a suction cutter.

The utility model aims to solve the problems that the structure of the existing suction cutter is too complex and the operation is inconvenient, and the utility model is realized by the following technical scheme:

a suction cutter, comprising:

the cutting part comprises a pipe body, a notch arranged on the side wall of the pipe body and a cutter capable of rotating in the pipe body, and the cutting edge end of the cutter can slide through the notch by rotating the cutter;

the transmission part comprises a shell, a driving piece arranged outside the shell and a transmission assembly connected with the driving piece, wherein the transmission assembly is connected with one end of the cutter far away from the notch, and the driving piece drives the transmission assembly to drive the cutter to rotate; the pipe body is communicated with the shell;

the negative pressure part is arranged on one side of the shell away from the cutting part and is positioned between the transmission component and the driving piece, and the driving piece drives the transmission component and extrudes the negative pressure part at the same time, so that the negative pressure part generates negative pressure;

and the collecting part is arranged below the shell and is used for collecting the cut polyps.

Further, the cutter is in a tubular shape and is adapted to the pipe body, and one end of the cutter, which is far away from the cutting edge, extends into the shell and is communicated with the shell.

Further, the transmission assembly comprises a rack, a first gear meshed with the rack, a second gear arranged above the first gear and meshed with the first gear, a first bevel gear rotating along with the second gear, and a second bevel gear matched with the first bevel gear; one end of the rack is connected with the negative pressure part, the cutter is fixedly connected with the second bevel gear, and the cutter is positioned at the center of the second bevel gear.

Further, the driving piece comprises a first bracket and a second bracket which are hinged, and the end parts of the first bracket and the second bracket, which are positioned on the same side of the joint point, are provided with finger rings serving as driving ends; the other end of the first bracket and the other end of the second bracket are driven ends; the driven end of the first bracket is fixed on the shell, and the driven end of the second bracket is connected with the transmission assembly through a connecting strip in sliding connection; the connecting strip passes through the shell and the negative pressure part.

Further, the connecting strip is parallel to the axial direction of the pipe body, and the shape of the driven end of the second bracket and the opposite part of the negative pressure assembly is adapted to the outer contour of the negative pressure assembly.

Further, a baffle is arranged in the pipe body, and the rack, the first gear, the second gear, the first bevel gear and the second bevel gear are respectively positioned on two sides of the baffle.

Further, the rack and the first gear are located at one side of the cutter away from the collecting part.

Further, the negative pressure assembly comprises an air pump which can stretch and retract along the axial direction parallel to the pipe body, a first one-way valve arranged on the air pump, and a second one-way valve arranged on the wall of the shell; the first one-way valve is used for exhausting the air pump towards the outside, and the second one-way valve is used for exhausting the shell towards the air pump.

Further, the periphery of the cutter is provided with a protrusion, a protrusion is arranged at the position of the pipe body corresponding to the protrusion, and the protrusion rotates in the protrusion.

Further, the collecting part is detachably connected with the shell.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

(1) According to the cutter disclosed by the utility model, the driving piece drives the transmission assembly to drive the cutter to rotate for cutting, and simultaneously extrudes the negative pressure part, so that the cut polyp is attracted towards the direction away from the incision by the negative pressure part, the simultaneous cutting and collecting of the polyp is realized, the operation procedure is reduced, the operation time is saved, and the pain of a patient is relieved. Negative pressure is generated by extruding the negative pressure part, so that components such as an external power line, an external negative pressure pipeline and the like are omitted, the structure of the equipment is greatly simplified, and the cost of the equipment is reduced.

(2) According to the cutter disclosed by the utility model, the driving piece pushes the rack to move, the rack is meshed with the first gear to rotate, the first gear is meshed with the second gear to rotate, the second gear drives the first bevel gear to rotate, and the first bevel gear is meshed with the second bevel gear to rotate. Through the transmission between the gears, ingenious pulling force with the pull ring or to the thrust of air pump turn into the rotatory rotation force of drive cutter and the compressive force of air pump, realize cutting and negative pressure attraction in step, the simple operation.

(3) The driving piece controls the rotation of the cutter and the generation of negative pressure through the opening and closing of the fingers of the doctor of the main cutter, and also controls the rotation speed of the rotation of the cutter, so that the control is convenient and accurate, and the doctor of the main cutter can more conveniently and differently control according to different conditions in the operation.

(4) The periphery of the cutter is provided with the bulge, the position of the pipe body corresponding to the bulge is provided with the bulge, and the bulge is always positioned in the bulge to rotate when the cutter rotates, so that the cutter and the pipe body are prevented from generating relative displacement in the axial direction, and the rotation stability of the cutter in the cutting process is ensured.

(5) According to the utility model, the horizontal height of the rack and the first gear is higher than that of the cutter, or the transmission assembly part component is arranged outside the shell, or the baffle plate is arranged to separate the second gear from the first bevel gear, so that polyps falling from the end part of the cutter can be prevented from being hung on the rack and the first gear, and the polyps can be ensured to smoothly fall to the collecting part.

Drawings

FIG. 1 is a front view of a suction cutter according to a first embodiment of the present utility model;

FIG. 2 is an enlarged view of a transmission assembly provided in accordance with a first embodiment of the present utility model;

FIG. 3 is a schematic view of another perspective view of the transmission assembly according to the first embodiment of the present utility model, wherein the viewing direction is the axial direction of the tube body;

FIG. 4 is a front view of yet another suction cutter provided in accordance with a first embodiment of the present utility model;

FIG. 5 is a front view of a suction cutter according to a second embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a transmission assembly according to a third embodiment of the present utility model, in which the line of sight direction is an axial direction of the tube body;

fig. 7 is a schematic structural diagram of a transmission assembly according to a fourth embodiment of the present utility model, in which the line of sight direction is an axial direction of the tube body.

Illustration of:

a pipe body-10; incision-101; a convex portion-102; a cutter-11; a blade-111; a protrusion-112;

a housing-21; a baffle-211; a transmission assembly-22; rack-221; a first gear-222; second gear-223; a first bevel gear-224; a second bevel gear-225; a driving member-23; finger ring-231; avoiding the through hole-232;

an air pump-30; a first one-way flap-31; a second one-way flap-32; a connecting bar-33; a limiting plate-331;

a collecting part-40.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

An attraction cutter comprises a cutting part, a transmission part, a negative pressure part and a collecting part, wherein the cutting part comprises a pipe body 10, a notch 101 arranged on the side wall of the pipe body 10 and a cutter 11 capable of rotating in the pipe body 10, and the cutter 11 is rotated to enable the edge 111 end of the cutter 11 to slide across the notch 101, so that polyps sliding into the pipe body 10 from the notch 101 can be cut. The transmission part comprises a shell 21, a driving piece 23 arranged outside the shell 21 and a transmission assembly 22 connected with the driving piece 23, wherein the transmission assembly 22 is connected with one end of the cutter 11 far away from the notch 101, and the driving piece 23 drives the transmission assembly 22 to drive the cutter 11 to rotate. The negative pressure part is arranged on one side of the shell 21 away from the cutting part and is positioned between the transmission assembly 22 and the driving piece 23. The driving member 23 presses the negative pressure portion while the driving member 23 drives the transmission assembly 22, so that the negative pressure portion generates negative pressure. The collecting portion 40 is provided below the housing 21, the tube body 10 is conducted with the housing 21, the polyp cut by the blade 111 falls into the tube body 10, and the polyp enters the housing 20 from the end of the tube body 10 due to the suction of the negative pressure portion, and then falls into the collecting portion 40 to be collected.

In this embodiment, the cutter 11 is tubular and adapted to the tube 10, one end of the cutter 11 far away from the blade 111 extends into the housing 20 and is in conduction with the housing 20, and polyp falls into the inner cavity of the cutter 11 in the tube 10 after being cut by the blade 111, and falls from the end of the cutter 11 to the collecting portion 40 by suction of the negative pressure portion. The collecting portion 40 is detachably connected to the housing 20, such as by a clamping connection, a threaded connection, etc., so that the collecting portion 40 can be conveniently poured and cleaned, and the interior of the housing 20 can be conveniently washed.

When the polyp collecting device is used, one end of the tube body 10, which is provided with the notch 101, stretches into a human body, polyps fall into the tube body 10 from the notch 101, at the moment, the driving piece is used for extruding the negative pressure part and simultaneously driving the transmission component 22 to rotate, so that the cutter 11 is driven to rotate, when the cutting edge 111 slides across the notch 101, the polyps are cut, negative pressure generated by the negative pressure part attracts the cut polyps in a direction away from the notch 101 while cutting the polyps, and finally falls into the collecting part 40 below the shell 20. The polyp is cut and collected integrally, equipment is not required to be replaced, the polyp is cut while negative pressure is generated, the operation procedure is reduced, the operation time is saved, and pain of patients is relieved. Negative pressure is generated by extruding the negative pressure part, so that components such as an external power line, an external negative pressure pipeline and the like are omitted, the structure of the equipment is greatly simplified, and the cost of the equipment is reduced.

It will be appreciated that the incision 101 is as close to the end of the tube 10 as possible to avoid the tube 10 extending too far into the body and increasing discomfort to the patient. The pipe body 10 can be cylindrical or elliptic cylindrical, the pipe body 10 can also be a round table, and the adaptability of the cutter is also a round table, namely the inner diameter gradually increases from the incision to the negative pressure part, so that the blockage is prevented.

The periphery of cutter 11 is provided with protruding 112, and body 10 is provided with protruding 102 with protruding 112 department corresponding, and when cutter 11 rotated, protruding 112 was located protruding 102 internal rotation all the time to prevent cutter 11 and body 10 to produce relative displacement in the axial.

Referring to fig. 2 and 3, the transmission assembly 22 includes a rack 221, a first gear 222, a second gear 223, a first bevel gear 224, and a second bevel gear 225. One end of the rack is connected with the negative pressure part through a connecting strip 33. The housing 21 is provided with a through hole (not shown) through which the connection bar 33 passes. The other end of the connecting bar is connected with the driving piece 23, the driving piece 23 extrudes the negative pressure part towards the cutting part direction, so that the negative pressure part generates negative pressure, and meanwhile, the connecting bar 33 can drive the rack 221 to move, and the rack 221 moves in the axial direction of the pipe body 10.

The first gear 222 is meshed with the rack 221, and pushing the rack drives the first gear 222 to rotate. The second gear 223 is meshed with the first gear 222, and the first gear 222 rotates to drive the second gear 223 to rotate. The first bevel gear 224 is disposed on the second gear 223 to rotate following the rotation of the second gear 223, and it is understood that the first bevel gear 224 is disposed at the center of the second gear 223. The second bevel gear 225 is engaged with the first bevel gear 224, the first bevel gear 224 rotates the second bevel gear 225, and the rotation direction of the second bevel gear is changed due to the conical surface fit. In this embodiment, the two-axis intersection angle of the first bevel gear 224 and the second bevel gear 225 is 90 degrees.

The cutter 11 is fixedly connected with the second bevel gear 225, and the cutter 11 is positioned at the center of the second bevel gear 225, so that the cutter 11 is driven by the second bevel gear 225 to rotate for cutting.

With continued reference to fig. 1, the driving member includes a first bracket and a second bracket that are hinged, and the end portions of the first bracket and the second bracket on the same side of the junction are provided with a finger ring 231, the side is a driving end, and the other ends of the first bracket and the second bracket are driven ends, i.e. the opening and closing of the driven ends of the first bracket and the second bracket are controlled by the driven ends, such as scissors or clips. The driven end of the first support is fixed on the shell 21, the driven end of the second support is connected with the rack 221 through a connecting strip 33 in sliding connection, specifically, the driven end of the second support is provided with an avoidance through hole 232, when the driven end is opened and closed, the driven end of the second support can only move, the moving path is an arc line, the avoidance through hole 232 is longitudinally opened at the driven end of the second support, so that the driven end of the second support can slide on the connecting strip 33, two limiting plates 331 are arranged on the connecting strip, the transverse distance of the limiting plates 331 is greater than the transverse distance of the avoidance through hole 232, and when the driven end of the second support is folded or unfolded, the driven end is abutted against the limiting plates to push or pull the connecting strip. The movement of the rack 221 can be controlled by controlling the opening and closing of the driving ends of the first bracket and the second bracket, namely, the rotation of the cutter and the negative pressure generation are controlled by controlling the opening and closing of the driving ends of the first bracket and the second bracket, and the rotation speed of the cutter is controlled by opening and closing of fingers, so that the control is convenient and accurate.

In some embodiments, the first bracket and the second bracket are in X-shaped cross hinge, the driving end is folded, and the driven end also follows the folding, because the driven end of the first bracket is fixed on the shell 21, when folding, the driven end of the second bracket pushes the connecting strip 33 to move towards the cutting part, that is, pushes the rack to move towards the cutting part, drives the cutter to rotate and simultaneously presses the air pump 31. Similarly, the driving end opens and the driven end follows the opening, as shown in fig. 1.

In a further embodiment, the first support is hinged with the second support in a back-to-back manner, the driving end is folded, the driven end is unfolded, the driving end is unfolded, the driven end is folded, and similarly, the driven end of the first support is fixed, the driven end of the second support is displaced to achieve the unfolding or folding effect, and therefore the rack is driven to do linear reciprocating motion. As in fig. 4.

In this embodiment, the connecting strip 33 is disposed parallel to the axial direction of the tube body 21, and the shape of the driven end of the second bracket opposite to the negative pressure assembly is adapted to the outer contour of the negative pressure assembly, so that when the negative pressure assembly is extruded, the contact area is larger, the extrusion effect is improved, and the negative pressure portion is not easily damaged.

With continued reference to fig. 1, the negative pressure assembly includes an air pump 30 that is retractable in an axial direction parallel to the tubular body 10, a first one-way valve 31 disposed on the air pump 30, and a second one-way valve 32 disposed on the housing wall. The first one-way valve 31 is used for exhausting the air pump 30 toward the outside, and the second one-way valve 32 is used for exhausting the housing 20 toward the air pump 30.

In use, the driven end of the second bracket compresses the air pump 30, and the air in the air pump 30 is discharged outwards through the first one-way valve 31. The extrusion of the air pump 30 is released, the air pressure in the air pump 30 is smaller than the external air pressure, so that negative pressure is formed, air enters the air pump 30 from the notch 102, the cutter 11, the shell 21 and the second one-way valve 32, the air pump 30 recovers the deformation process to generate negative pressure, and polyps in the cutter 11 are attracted towards the air pump 30. In this embodiment, the first one-way valve 31 is disposed at an end of the air pump 30 away from the housing 20, preventing obstruction of the exhaust of the first one-way valve 31 when the air pump 30 is compressed.

Example two

Referring to fig. 5, the present embodiment is modified on the basis of the first embodiment, and the principle of the present embodiment is the same as that of the first embodiment, except that the rack 221 and the first gear 222 of the present embodiment have a higher level than the cutter 11, so that the polyp falling from the end of the cutter 11 is prevented from hanging on the rack 221 and the first gear 222, thereby ensuring that the polyp can smoothly fall to the collecting portion. The horizontal height is based on the front view direction of the cutter.

Example III

Referring to fig. 6, this embodiment is modified from the first or second embodiment in that the transmission assembly 22 in this embodiment is partially located inside the housing 21 and partially located outside the housing 21. Specifically, the rack 221, the first gear 222, and the second gear 223 are located outside the housing 21, and a through hole (not shown) through which a shaft of the first bevel gear 224 passes is provided in the housing 21 so that the first bevel gear 224 can rotate following the rotation of the second gear 223. Part of the components of the transmission assembly 22 are disposed outside the housing 21 to avoid sticking of polyps to the part of the components located outside the housing 21.

Example IV

Referring to fig. 7, this embodiment is modified from the first embodiment, and is different from the first embodiment in that a baffle 211 is provided on an inner wall of the housing 20 in this embodiment, for separating the rack 221, the first gear 222, and the second gear 223 from the first bevel gear and the second bevel gear, and a through hole (not shown) for passing a shaft of the first bevel gear is provided on the baffle 211. The transmission assembly 22 is separated by a baffle plate to prevent polyps at the end of the cutter 11 from sticking to the rack 221 and the first gear 222.

The suction cutter of the utility model combines suction and cutting ingeniously, the cutting and suction are driven by the driving piece, the control is convenient, the frequency of replacing instruments in operation is reduced, the negative pressure can be generated by the extrusion air pump through the cooperation of the air pump and the unidirectional valve, the purpose of suction is achieved, components such as an external power line and an external negative pressure pipeline are omitted, the structure of the device is greatly simplified, the cost of the device is also reduced, the cutter is driven to cut while the extrusion air pump generates the negative pressure, the operation procedure in operation is reduced, the time is saved, and the pain of patients is lightened.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, but is capable of use in various other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept, either as described above or as a matter of skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (11)

1. A suction cutter, comprising:

the cutting part comprises a pipe body, a notch arranged on the side wall of the pipe body and a cutter capable of rotating in the pipe body, and the cutting edge end of the cutter can slide through the notch by rotating the cutter;

the transmission part comprises a shell, a driving piece arranged outside the shell and a transmission assembly connected with the driving piece, wherein the transmission assembly is connected with one end of the cutter far away from the notch, and the driving piece drives the transmission assembly to drive the cutter to rotate; the pipe body is communicated with the shell;

the negative pressure part is arranged on one side of the shell away from the cutting part and is positioned between the transmission component and the driving piece, and the driving piece drives the transmission component and extrudes the negative pressure part at the same time, so that the negative pressure part generates negative pressure;

and the collecting part is arranged below the shell and is used for collecting the cut polyps.

2. An aspiration cutter as in claim 1 wherein the cutter is tubular to fit the tube and wherein an end of the cutter distal from the blade extends into the housing and is in communication with the housing.

3. The suction cutter of claim 1, wherein the transmission assembly comprises a rack, a first gear meshed with the rack, a second gear meshed with the first gear and arranged above the first gear, a first bevel gear rotating along with the second gear, and a second bevel gear matched with the first bevel gear; one end of the rack is connected with the negative pressure part, the cutter is fixedly connected with the second bevel gear, and the cutter is positioned at the center of the second bevel gear.

4. The suction cutter as claimed in claim 1, wherein the driving member comprises a first bracket and a second bracket which are hinged, and the end parts of the first bracket and the second bracket, which are positioned on the same side of the intersection point, are provided with finger rings as driving ends; the other end of the first bracket and the other end of the second bracket are driven ends; the driven end of the first bracket is fixed on the shell, and the driven end of the second bracket is connected with the transmission assembly through a connecting strip in sliding connection; the connecting strip passes through the shell and the negative pressure part.

5. The suction cutter of claim 4, wherein two limiting plates are fixedly arranged at one end of the connecting strip away from the transmission assembly, the driven end of the second bracket is sleeved between the two limiting plates through an avoidance through hole, and the avoidance through hole is formed in the second bracket in the longitudinal direction.

6. The suction cutter as in claim 4, wherein the connecting strip is disposed parallel to the axial direction of the tube, and the driven end of the second bracket is adapted to the outer contour of the negative pressure assembly in shape with the opposite portion of the negative pressure assembly.

7. The suction cutter of claim 1, wherein a baffle is disposed in the tube, and the rack, the first gear, and the second gear are disposed on opposite sides of the baffle, respectively.

8. A suction cutter as in claim 3, wherein said rack and said first gear are located on a side of said cutter remote from said collection portion.

9. The suction cutter of claim 1, wherein the negative pressure assembly comprises an air pump that is retractable in an axial direction parallel to the tube, a first one-way valve disposed on the air pump, and a second one-way valve disposed on the housing wall; the first one-way valve is used for exhausting the air pump towards the outside, and the second one-way valve is used for exhausting the shell towards the air pump.

10. The suction cutter as claimed in claim 9, wherein the cutter has a protrusion on an outer circumference thereof, and a protrusion is provided at a position of the tube body corresponding to the protrusion, the protrusion being rotated in the protrusion.

11. The suction cutter as in claim 1, wherein the collection portion is removably coupled to the housing.