Cutter for nasal department

Abstract

The utility model provides a nasal cutter. The nasal cutter comprises a cutting part, a transmission part and a collecting part. The cutting part comprises a pipe body, a notch formed in the side wall of the pipe body and a cutter capable of rotating in the pipe body; the cutter comprises a central shaft and a spiral blade arranged outside the central shaft; the ends of the spiral blades extend towards the inner wall of the pipe body and are attached to the inner wall of the pipe body to form cutting edge ends, and the cutting edge ends can slide through the notches by rotating the center shaft. The transmission part comprises a shell and a transmission assembly arranged in the shell or partially arranged in the shell, and the transmission assembly is connected with the end, away from the notch, of the center shaft. The collecting part is arranged below the pipe body and communicated with the pipe body, and the collecting part is located between the notch and the transmission part. The central shaft is rotated, the cutting edge end is synchronously driven to cut, the spiral blade is matched with the inner wall of the pipe body to transport polyp tissue, cutting and transporting are integrated, a negative pressure device is omitted, and therefore equipment is simplified, the operation difficulty is lowered, and the equipment manufacturing cost is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical treatment instrument, especially a cutting device for rhinology. BACKGROUND

[0002] At present, most of the nasal cavity and sinus minimally invasive surgeries are performed under the monitoring of nasal endoscope. During the nasal endoscopic surgery, the surgeon holds the nasal endoscope with one hand and holds the surgical instrument with the other hand to perform the surgery, that is, the surgeon operates the surgical instrument with one hand. Since the surgical instrument can only be operated with one hand, the surgeon often needs to cut the diseased tissue with the sinus forceps first, then withdraw the sinus forceps from the nasal cavity, and replace it with a suction device to suck out the cut diseased tissue and blood clots. The sinus forceps and the suction device need to be replaced frequently during the surgery, and repeatedly enter and exit the nasal cavity, thus the efficiency is low. When there is a lot of bleeding in the surgical area, the fresh blood cannot be sucked out in time, which causes unclear surgical field and difficult identification of anatomical structures, which may affect the surgical progress, or even damage the important structures such as internal carotid artery, and cause fatal complications. CN200610050359.5 (medical surgical suction cutting device) discloses a surgical suction cutting device, which can suck out the fresh blood and tissue fragments in the surgical area while cutting the diseased tissue, without the need to repeatedly replace the instruments, thus improving the work efficiency. The device also needs to be connected with an external negative pressure pipeline or a negative pressure device, and the tissue and blood clots are sucked out by the suction force generated by the knife head due to the negative pressure. Therefore, the knife head is often blocked by bone fragments during the surgery, and the surgery has to be interrupted.

[0003] Therefore, how to make the suction cutting device more convenient to use, lower in cost, and less likely to be blocked is a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0004] To solve the above problems, the purpose of the utility model is to provide a cutting device for rhinology, which integrates cutting and transportation, reduces the negative pressure assembly, and avoids the blockage problem caused by insufficient negative pressure.

[0005] The utility model realizes the following technical scheme:

[0006] A cutting device for rhinology comprises:

[0007] A cutting part comprises a tube body, a cutout provided on the side wall of the tube body, and a cutting knife capable of rotating in the tube body; the cutting knife comprises a central shaft and a spiral blade provided outside the central shaft; the end of the spiral blade extends towards the inner wall of the tube body and is attached to the inner wall of the tube body to form a cutting edge end; rotating the central shaft can make the cutting edge end slide through the cutout;

[0008] A transmission part comprises a shell, a transmission assembly provided in or partially provided in the shell, and the transmission assembly is connected to the end of the central shaft away from the cutout.

[0009] A collecting part is arranged below the pipe body and is in communication with the pipe body, and is located between the cutout and the transmission part.

[0010] Further, the transmission assembly comprises a power supply assembly, a motor, a switch assembly arranged between the power supply assembly and the motor, and a transmission part arranged on an output shaft of the motor, and the transmission part is connected with the central shaft.

[0011] Further, the transmission part comprises a shaft coupling or a belt pulley.

[0012] Further, the transmission part comprises a gear set, the gear set comprises a driving wheel and a driven wheel engaged with the driving wheel, the driving wheel is connected with the output shaft of the motor, and the driven wheel is connected with the central shaft; and the driving wheel is located below the driven wheel.

[0013] Further, the driving wheel is connected with the output shaft of the motor through a speed reducer and / or a shaft coupling.

[0014] Further, the pipe body and the shell are detachably connected.

[0015] Further, the driving wheel is located outside the shell; an end of the pipe body away from the cutout is open, the end of the pipe body away from the cutout abuts against the shell; a buckle is arranged on a periphery of a side of the shell facing the pipe body, and the pipe body is provided with a matched step or clamping groove.

[0016] Further, the collecting part and the pipe body are detachably connected.

[0017] Further, a lower side wall of the pipe body is provided with a lower through pipe, and the collecting part is clamped or connected through threads with the lower through pipe.

[0018] Compared with the prior art, the technical scheme and beneficial effects of the utility model are as follows:

[0019] (1) The cutter of the utility model, one end of the pipe body provided with a cutout is inserted into the human body, polyps fall into the pipe body from the cutout, at this time, the transmission part drives the central shaft to rotate, the cutting edge end slides through the cutout to cut the polyps, the separated polyps fall into the pipe body, the spiral blade rotates synchronously with the central shaft to transport the fallen polyps from the cutout to the direction of the conveying part, and finally falls into the collecting part in communication with the pipe body. The cutting and transportation are integrated, synchronous rotation control is realized, the negative pressure device is reduced, the equipment is simplified, the operation difficulty and the equipment manufacturing cost are reduced, the operation procedure is reduced, the operation time is saved, and the pain of the patient is relieved.

[0020] (2) The collecting part and the pipe body are detachably connected, so that the polyp tissue gathered in the collecting part 30 can be taken out alone, facilitating subsequent pathological analysis, and meanwhile, the cutter inside the pipe body can be conveniently cleaned.

[0021] (3) The pipe body and the shell are detachably connected, that is, the cutting part and the transmission part are detachably connected, so that the cutting part can be designed as a disposable consumable, preventing cross infection and other adverse events. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic diagram of a nasal cutting device provided by the utility model embodiment one;

[0023] Figure 2 is a structure schematic diagram of a nasal cutting device provided by the utility model embodiment two;

[0024] Figure 3 is a split drawing of the nasal cutting device provided by the utility model embodiment two.

[0025] ILLUSTRATION:

[0026] Pipe body-10;Cut-101;Center shaft-11;Spiral blade-12;Blade edge-13;Bearing-14;Lower through pipe-15;

[0027] Shell-20;Buckle-201;Motor-21;Coupling-22;Key-23;Reduction box-24;Driving wheel-25;Driven wheel-26;

[0028] Collecting part-30. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Embodiment one

[0031] Refer to Figure 1The application relates to a nasal cutting device, which comprises a cutting part, a transmission part and a collecting part. The cutting part comprises a tube body 10, a cut 101 arranged on the side wall of the tube body 10 and a cutter capable of rotating in the tube body 10, wherein the cutter comprises a central shaft 11 connected with the transmission part and a spiral blade 12 arranged outside the central shaft 11, the end of the spiral blade 12 extends towards the inner wall of the tube body and is attached to the inner wall of the tube body to form a cutting edge 13, and rotating the central shaft 11 can make the cutting edge 13 slide through the cut 101. The transmission part comprises a shell 20, a transmission assembly arranged in the shell or partially arranged in the shell 20, the transmission assembly is connected with the end of the central shaft 11 far away from the cut 101, so as to drive the central shaft 11 to rotate, and the end of the central shaft 11 close to the cut 101 is connected with the tube body 10 through a bearing 14. The collecting part 30 is arranged below the tube body 10 and is communicated with the tube body 10, and the collecting part 30 is located between the cut 101 and the transmission part.

[0032] In use, the end of the tube body 10 provided with the cut 101 is inserted into a human body, polyps fall into the tube body 10 from the cut 101, at this time, the transmission part is started to drive the central shaft 11 to rotate, the cutting edge 13 slides through the cut 101 to cut the polyps, the separated polyps fall into the tube body 10, the spiral blade 12 rotates synchronously with the central shaft 11 to transport the fallen polyp tissues from the cut 101 to the transmission part, and finally the polyp tissues fall into the collecting part 30 communicated with the tube body 10. The cutting and transportation are integrated, synchronous rotation control is realized, a negative pressure device is reduced, the equipment is simplified, the operation difficulty is reduced, the equipment manufacturing cost is reduced, the operation procedure is reduced, the operation time is saved, and the pain of the patient is reduced.

[0033] It can be understood that the cut 101 is arranged close to the end of the tube body 10, so as to avoid that the tube body is too long to be inserted into the human body and the patient feels uncomfortable. The tube body 10 can be in a cylindrical shape, and the tube body 10 can also be in a circular truncated cone shape, and the cutter is also adapted to the circular truncated cone shape, that is, the diameter of the spiral blade 12 gradually increases from the cut to the transmission part, that is, the transportation pipeline gradually increases, so as to prevent blockage.

[0034] The transmission assembly comprises a power supply assembly (not shown), a motor 21, a switch assembly arranged between the power supply assembly and the motor, and a transmission part arranged on the output shaft of the motor 21 and connected with the central shaft 11. The power supply assembly supplies power to the motor through the control of the switch assembly, starts the motor, drives the central shaft 11 to rotate through the transmission part, and then drives the cutting edge 13 to cut and drives the spiral blade 12 to start transporting the cut polyp tissues. It can be understood that the switch assembly comprises a switch circuit and a button 23, the opening and closing of the switch circuit is controlled through the button 23, so as to control whether the power supply assembly supplies power to the motor 21. The power supply assembly comprises a power supply, and the power supply can be a portable power supply such as a dry battery or a storage battery, so as to reduce the line connection and make the cutting device more convenient to use.

[0035] In this embodiment, the transmission member includes a shaft coupling 22 or a belt pulley, and the rotation of the motor output shaft is transmitted to the central shaft 11 through the transmission member, so that the central shaft 11 rotates.

[0036] The collecting part 30 is detachably connected with the tube body 10, so that the polyp tissue accumulated in the collecting part 30 can be taken out separately, facilitating subsequent pathological analysis, and at the same time, the cutter inside the tube body can also be cleaned. In this embodiment, the lower side wall of the tube body 10 away from the incision is provided with a lower through pipe 15, and the collecting part 30 is detachably connected with the lower through pipe 15 through screw connection or clamping. Both the screw connection and the clamping are common detachable connection modes, which will not be described here.

[0037] Embodiment Two

[0038] Referring to Figure 2 and Figure 3 , the basic principle of this embodiment is the same as that of Embodiment One, and the difference lies in that the transmission member of this embodiment includes a gear set, and the motor output shaft drives the central shaft through the gear set. Specifically, the gear set includes a driving wheel 25 and a driven wheel 26 engaged with the driving wheel 25, the driving wheel 25 is connected with the output shaft of the motor 21, and the driven wheel 26 is connected with the central shaft 11. The motor 21 drives the driving wheel 25 to rotate, the driving wheel 25 engages the driven wheel 26 to rotate, and the driven wheel 26 drives the central shaft 11 to rotate. The driving wheel 25 is located below the driven wheel 26, so as to provide support force for this end of the central shaft 11. The driving wheel 25 and the output shaft of the motor 21 can be connected through a speed reducer 24 or a shaft coupling.

[0039] The tube body 10 and the shell 20 of this embodiment can be connected in a detachable manner, that is, the cutting part and the transmission part are detachably connected, so that the cutting part can be designed as a disposable consumable to prevent cross infection and other adverse events. The driving wheel 25 is located outside the shell 20 to prevent polyp tissue from entering the inside of the shell 20. The end of the tube body 10 away from the incision 101 is open, the end of the tube body 10 away from the incision 101 abuts against the shell 20, the periphery of the side of the shell 20 facing the tube body is provided with a buckle 201, and the tube body 10 is provided with a matching step or clamping groove (not shown). Through the cooperation of the buckle and the clamping groove or the step, the end of the tube body 10 is tightly abutted against the shell 20, so as to ensure the stability of the engagement of the driving wheel 25 and the driven wheel 26. It can be understood that the buckle 201 can be rotated by a certain angle relative to the shell, and in use, the buckle 201 is expanded outward, the end of the tube body abuts against the shell, and in this process, the teeth of the driving wheel and the driven wheel are staggered, and then the tube body is buckled tightly through the buckle.

[0040] The above description shows and describes the preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application concept, by the above teachings or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. A rhinological cutter characterized in that, The utility model relates to a cutting device, comprising: a cutting part, which comprises a tube, a cutout on the side wall of the tube, and a cutter capable of rotating in the tube; the cutter comprises a central shaft and a spiral blade arranged outside the central shaft, the end of the spiral blade extends towards the inner wall of the tube and abuts the inner wall of the tube to form a blade end, and rotating the central shaft can make the blade end slide through the cutout; a transmission part, which comprises a shell, a transmission assembly arranged in or partially arranged in the shell, and the transmission assembly is connected to the end of the central shaft away from the cutout; a collecting part, which is arranged below the tube and is in communication with the tube, and the collecting part is located between the cutout and the transmission part.

2. A rhinologic dissector according to claim 1, wherein, the transmission assembly comprises a power supply assembly, a motor, a switch assembly arranged between the power supply assembly and the motor, and a transmission part arranged on the output shaft of the motor, and the transmission part is connected to the central shaft.

3. A nasal cutter according to claim 2, wherein, the transmission part comprises a shaft coupling or a belt pulley.

4. A rhinologic cutter according to claim 2, wherein the transmission part comprises a gear set, which comprises a driving wheel and a driven wheel engaged with the driving wheel, the driving wheel is connected to the output shaft of the motor, and the driven wheel is connected to the central shaft; the driving wheel is located below the driven wheel.

5. A rhinologic cutter according to claim 4, wherein the driving wheel and the output shaft of the motor are connected through a speed reducer and / or a shaft coupling.

6. A rhinologic cutter according to claim 4, wherein the tube and the shell are detachably connected.

7. A nasal cutter according to claim 6, wherein, the driving wheel is located outside the shell; the end of the tube away from the cutout is open, the end of the tube away from the cutout abuts the shell; the periphery of the side of the shell towards the tube is provided with a buckle, and the tube is provided with a matching step or clamping groove.

8. The nasal cutting instrument of claim 1, wherein, the collecting part and the tube are detachably connected.

9. A nasal cutter according to claim 8, wherein, the lower side wall of the tube is provided with a lower through pipe, and the collecting part and the lower through pipe are clamped or connected through threads.

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