CN219835652U

CN219835652U - Convenient suction cutter

Info

Publication number: CN219835652U
Application number: CN202321045618.0U
Authority: CN
Inventors: 陈兆阅
Original assignee: Xiamen Hospital Zhongshan Hospital Fudan University
Current assignee: Xiamen Hospital Zhongshan Hospital Fudan University
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-10-17
Anticipated expiration: 2033-05-04

Abstract

The utility model provides a convenient suction cutter which comprises a cutting part, a transmission part, a negative pressure part, a collecting part and a battery. The polyp falls into the body from incision, and the battery provides the power for drive portion, opens the on-off key and makes drive assembly drive the cutter and rotate, and when the cutting edge was slided the incision, cuts the polyp, and simultaneously, drive assembly drive the negative pressure that negative pressure portion produced, when cutting the polyp, the polyp orientation that will cut down is kept away from incision direction attraction, finally falls in the collecting portion that is located the body below. 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. The motor drives the cutter to cut and simultaneously drives the negative pressure part to generate negative pressure, 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 also reduced. By means of electric control, the cutting and sucking speed is stable.

Description

Convenient suction cutter

Technical Field

The utility model relates to an otorhinolaryngological instrument, in particular to a convenient suction 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 simple suction cutter.

The utility model aims to solve the problems that the existing suction cutter is complicated in structure and inconvenient to operate.

In order to solve the problems, the utility model is realized by the following technical scheme:

a portable 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 transmission assembly arranged in the shell and a switch key arranged outside the shell and used for controlling the start and stop of the transmission assembly, and the transmission assembly is connected with one end of the cutter, which is far away from the notch; the cutter is communicated with the shell;

the negative pressure part is connected with the transmission assembly, and the transmission assembly drives the cutter to rotate and simultaneously drives the negative pressure part to generate negative pressure;

the collecting part is arranged below the pipe body and is communicated with the pipe body, and an opening is formed in the position, opposite to the collecting part, of the cutter;

and the battery is electrically connected with the switch key and used for supplying power to the transmission assembly.

Further, the transmission assembly comprises a gear motor and a gear set connected with an output shaft of the gear motor; the cutter is connected with an output shaft of the speed reducing motor, and the negative pressure part is connected with the gear set; the gear set is driven by the gear motor to rotate, and the negative pressure part is driven by the gear set to generate negative pressure.

Further, the negative pressure part comprises a telescopic air pump, a connecting strip, a first one-way valve and a second one-way valve, wherein one end of the connecting strip is connected with the air pump, the other end of the connecting strip is connected with the gear set, the first one-way valve is arranged on the air pump, and the second one-way valve is 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; the gear set drives the air pump to compress.

Further, the gear set comprises a power gear or a power gear set connected with an output shaft of the gear motor, and a connecting gear meshed with the power gear or the power gear set, wherein the connecting gear is connected with one side, away from the connecting gear, of the air pump through a connecting strip, a through hole for the connecting strip to pass through is formed in the shell, and the connecting strip is connected to a non-center position of the connecting gear.

Further, the expansion and contraction direction of the air pump is consistent with the radial direction of the connecting gear.

Further, one end of the connecting strip, which is close to the air pump, is provided with a limiting ball, a limiting groove for accommodating the limiting ball is correspondingly formed in the air pump, an opening is formed in the limiting groove towards the direction of the connecting gear, and the opening of the limiting groove is smaller than the diameter of the limiting ball.

Further, the air pump is provided with a yielding groove, the yielding groove is used for yielding the motion track of the connecting strip, and the air cavity of the air pump is annularly arranged at the periphery of the yielding groove.

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 pipe body is detachably connected with the shell.

Further, the collecting part is detachably connected with the pipe body.

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 transmission component drives the negative pressure part to generate negative pressure and drives the transmission component to drive the cutter to rotate for cutting, and the negative pressure part attracts the cut polyp to the direction away from the incision, so that the polyp is cut and collected simultaneously, 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 utility model, the connecting gear is driven to rotate by the gear motor through the transmission gear, and the connecting strip for driving the air pump to stretch is connected to the non-center of the connecting gear, so that the working state that the air pump is driven to compress and stretch in a reciprocating way by the rotation of the connecting gear is realized, negative pressure is generated continuously, and the cut polyp is attracted.

(3) The connecting strip is connected with the air pump through the cooperation of the limiting ball and the limiting groove, and the limiting ball can rotate in the limiting groove, so that the connecting strip can conveniently change the relative angle with the air pump along with the rotation of the connecting gear.

Drawings

FIG. 1 is a front view of a portable suction cutter provided in accordance with an embodiment of the present utility model;

FIG. 2 is a top view of a cutter provided in an embodiment of the present utility model;

fig. 3 is an enlarged view of the transmission assembly 21 of fig. 1;

fig. 4 is an enlarged view of the negative pressure part provided in the embodiment of the present utility model.

Illustration of:

a pipe body-10; incision-101; a convex portion-102; a cutter-11; a blade-111; a protrusion-112; an opening-113; air holes-114;

a shell-20; a via-201; a transmission assembly-21; a gear motor-211; a power gear-212; a connecting gear-213; a switch key-22;

an air pump-30; limit groove-301; a yielding groove-302; a first one-way flap-31; a second one-way flap-32; a connecting bar-33; limit ball-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.

Referring to fig. 1 and 2, a convenient suction cutter comprises a cutting part, a transmission part, a negative pressure part, a collecting part and a battery, wherein the cutting part comprises a tube body 10, a notch 101 arranged on the side wall of the tube body 10 and a cutter 11 capable of rotating in the tube body 10, and the cutter 11 is rotated to enable the edge 111 end of the cutter 11 to slide through the notch 101, so that a polyp sliding into the tube body 10 from the notch 101 is cut. The transmission part comprises a shell 20, a transmission assembly 21 arranged in the shell 20 and a switch key 22 arranged outside the shell 20 and used for controlling the start and stop of the transmission assembly 21, and the transmission assembly 21 is connected with one end of the cutter 11 far away from the notch 101. The negative pressure part is connected with the transmission component 21, and the transmission component 21 drives the cutter 11 to rotate and simultaneously drives the negative pressure part to generate negative pressure. The collecting portion 40 is provided below the tube body 10 and is in communication with the tube body 10, an opening 113 is provided at a position where the cutter 11 faces the collecting portion 40, and polyps cut by the blade 111 move away from the notch 101 due to suction of negative pressure generated by the negative pressure portion, and drop from the opening 113 to the collecting portion 40 to be collected. A battery (not shown) is electrically connected to the switch 22 for supplying power to the transmission assembly 21.

When the polyp collecting device is used, one end of the pipe body 10, which is provided with the notch 101, stretches into a human body, polyps fall into the pipe body 10 from the notch 101, the on-off key 22 is opened to enable the transmission component 21 to drive the cutter 11 to rotate, when the cutting edge 111 slides across the notch 101, the polyps are cut, meanwhile, the transmission component 21 drives negative pressure generated by the negative pressure part, when the polyps are cut, the cut polyps are attracted towards the direction away from the notch 101, and finally fall into the collecting part 40 below the pipe body 10. 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. By means of electric control, the cutting and sucking speed is stable.

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.

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 conducted with the housing 20 through the air hole 114, 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 opening 113 of the cutter 11 to the collecting portion 40 through the suction of the negative pressure portion. The collecting portion 40 is detachably connected with the pipe body 10, such as a clamping connection, a threaded connection, etc., so as to facilitate the dumping and cleaning of the collecting portion 40, and the pipe body 10 and the housing 20 may also be detachably connected, so as to facilitate the cleaning of the cutter 11.

Referring to fig. 3, the transmission assembly includes a gear motor 211, and a gear set connected to an output of the gear motor 211, the cutter 11 is connected to an output shaft of the gear motor 211, the negative pressure portion is connected to the gear set, the gear set is driven by the gear motor 211 to rotate, and the gear set drives the negative pressure portion to generate negative pressure.

In this embodiment, the negative pressure part includes a telescopic air pump 30, a connecting bar 33 with one end connected to the air pump 30 and the other end connected to the gear set, a first one-way valve 31 provided on the air pump 30, and a second one-way valve 32 provided on the wall of the housing 20. The first one-way valve 31 is used for exhausting the air pump 30 towards the outside, the second one-way valve 32 is used for exhausting the shell 20 towards the air pump 30, and the gear set drives the air pump 20 to compress.

The gear set comprises a power gear 212 connected with an output shaft of the gear motor 211 and a connecting gear 213 meshed with the power gear 212, the connecting gear 213 is connected with one side, far away from the connecting gear 213, of the air pump 30 through a connecting strip 33, a through hole 201 for the connecting strip 33 to pass through is formed in the shell 20, the connecting strip 33 is connected to a non-circle center of the connecting gear 213, a circular track is formed at the joint of the connecting strip 33 and the connecting gear 213 along with rotation of the connecting gear 213, when the joint is farthest from the air pump 30, the air pump 30 is in a maximum compression state, and when the joint is closest to the air pump 30, the air pump 30 is in a maximum expansion state, so that the air pump is in a compression and expansion alternating working state along with rotation of the connecting gear 213, namely negative pressure is not stopped. Specifically, the connecting bar 33 pulls one side of the air pump to approach the connecting gear 213 through the rotation of the connecting gear 213, so that the air in the air pump 30 is discharged from the first one-way valve 31 to the outside, and then the pulling force on the air pump 30 is released, and the air pump draws the air in the housing 20 toward the air pump through the second one-way valve 32, so that the air in the cutter 11 is drawn through the air hole 114. In this embodiment, the expansion and contraction direction of the air pump 30 is consistent with the radial direction of the connecting gear 213, so as to ensure that the connecting gear 213 can drive the connecting bar 33 to perform the maximum displacement.

It should be noted that the power gear 212 and the connecting gear 213 may be bevel gears and the cooperation of bevel gears, so as to change the transmission direction of the gears, and the power gear may be a combination of a plurality of gears, and the types and the number of the gears may be adjusted according to the specific design of the product. The frequency of compression release of the air pump 30 is adjusted by configuring the gear ratios of the different power gears 212 and the connecting gears 213.

Referring to fig. 4, a limit ball 331 is disposed at one end of the connecting bar 33 near the air pump 30, a limit groove 301 for accommodating the limit ball 331 is correspondingly disposed on the air pump 30, an opening is disposed in the direction of the connected gear 213 in the limit groove 301, and the opening is smaller than the diameter of the limit ball 331, so that the limit ball 331 can rotate in the limit groove 301, and the limit ball 331 is prevented from falling from the limit groove 301, and the air pump is driven to compress when the connecting bar 33 is pulled.

In this embodiment, the air pump 30 is provided with a yielding groove 302, the yielding groove 302 is used for yielding the movement track of the connecting bar 33, and the air cavity of the air pump 30 is annularly arranged at the periphery of the yielding groove 302. In this embodiment, the connecting strips always move on the same plane, so the thickness of the relief groove 302 is equal to the thickness of the connecting strips, and is flat.

The convenient suction cutter provided by the utility model has the advantages that suction and cutting are skillfully combined, electrodes for cutting and suction are driven to occur, the control is convenient, the number of times of replacing instruments in operation is reduced, the air pump is matched with the unidirectional valve, so that negative pressure can be generated by extruding the air pump to achieve the purpose of suction, the 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 motor drives the cutter to cut and simultaneously drives the gear to pull the air pump to generate negative pressure, the operation procedure in operation is reduced, and the time is saved, and pain of a patient is relieved.

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

1. A portable suction cutter, comprising:

2. The portable suction cutter of claim 1, wherein the transmission assembly comprises a gear motor, a gear set connected to an output shaft of the gear motor; the cutter is connected with an output shaft of the speed reducing motor, and the negative pressure part is connected with the gear set; the gear set is driven by the gear motor to rotate, and the negative pressure part is driven by the gear set to generate negative pressure.

3. The portable suction cutter according to claim 2, wherein the negative pressure part comprises a telescopic air pump, a connecting strip, a first one-way valve and a second one-way valve, wherein one end of the connecting strip is connected with the air pump, the other end of the connecting strip is connected with the gear set, the first one-way valve is arranged on the air pump, and the second one-way valve is 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; the gear set drives the air pump to compress.

4. A portable suction cutter according to claim 3, wherein the gear set comprises a power gear or a power gear set connected with an output shaft of the gear motor, and a connecting gear meshed with the power gear or the power gear set, the connecting gear is connected with one side of the air pump away from the connecting gear through a connecting strip, a through hole for the connecting strip to pass through is formed in the shell, and the connecting strip is connected to a non-center position of the connecting gear.

5. The portable suction cutter of claim 4, wherein the direction of extension of the air pump is in line with the radial direction of the connecting gear.

6. The portable suction cutter according to claim 4, wherein a limit ball is arranged at one end of the connecting bar, which is close to the air pump, and a limit groove for accommodating the limit ball is correspondingly arranged on the air pump, an opening is arranged in the direction of the limit groove towards the connecting gear, and the opening of the limit groove is smaller than the diameter of the limit ball.

7. The portable suction cutter of claim 4, wherein the air pump is provided with a yielding groove for yielding the movement track of the connecting strip, and the air cavity of the air pump is annularly arranged at the circumferential side of the yielding groove.

8. The portable suction cutter of claim 1, wherein the outer periphery of the cutter is provided with a protrusion, a protrusion is provided at a position of the tube body corresponding to the protrusion, and the protrusion rotates in the protrusion.

9. The portable suction cutter of claim 1, wherein the tube is detachably connected to the housing.

10. The portable suction cutter of claim 1, wherein the collection portion is removably connected to the tube.