A simple suction cutter

Abstract

The present invention provides a simple suction cutter, comprising a cutting assembly, a negative pressure assembly, and a collecting element. The cutting assembly comprises a tube body, an incision provided on the side wall of the tube body, and a cutter that can slide within the tube body, with the cutting edge of the cutter adjacent to the incision. The negative pressure assembly is provided at one end of the tube body, and the cutter is connected to the negative pressure assembly so that pushing the negative pressure assembly simultaneously pushes the cutter to cut. The collecting element is provided on the side wall of the tube body and is in electrical communication with the tube body, and is located between the incision and the negative pressure assembly. Moving the cutter allows the cutting edge of the cutter to slide across the incision. The cutter of the present invention integrates the cutting and collection of polyps, eliminating the need for equipment replacement. Polyps are cut while negative pressure is generated, reducing the number of operating procedures and eliminating components such as an external power cord and an external negative pressure line. This greatly simplifies the structure of the device and reduces its cost.

Description

Technical Field

[0001] The present invention relates to the field of otolaryngology surgical instruments, and in particular to a simple suction cutter. Background Art

[0002] Currently, the vast majority of nasal and sinus surgeries are performed minimally invasively under endoscopic monitoring. During endoscopic surgery, the surgeon needs to hold the endoscope with one hand and the surgical instruments with the other, meaning the surgeon operates the instruments with one hand. Because they can only operate the instruments with one hand, surgeons often first use sinus forceps to remove the diseased tissue, then remove the forceps and replace them with an aspirator to remove the excised diseased tissue and blood clots. This method requires constant replacement of the sinus forceps and aspirator, resulting in low efficiency. When bleeding is heavy in the surgical area, the surgeon often fails to aspirate the blood in time, resulting in an unclear surgical field of view and difficulty identifying anatomical structures. This can affect the surgical process at best, and even damage important structures such as the brain and internal carotid artery, leading to fatal complications. CN200610050359.5 (Medical Surgical Suction Cutter) discloses a surgical suction cutter that can simultaneously remove diseased tissue and aspirate blood and tissue fragments from the surgical area, eliminating the need for repeated instrument replacement and improving work efficiency. However, this suction cutter not only requires an external power supply, but also requires an external negative pressure device to provide negative pressure. The entire set of equipment includes a main unit, a main unit support frame, an external power cord, an external negative pressure pipeline, a foot switch, a cutter handle, a cutter head and other components, resulting in many problems such as complex equipment structure, long assembly and connection time, high cost, and the need for repeated disinfection and reuse, which affects its promotion and application.

[0003] In view of this, how to make the suction cutter more convenient to use is a technical problem that needs to be solved in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide a simple suction cutter.

[0005] The present invention aims to solve the problem that the existing suction cutter has an overly complex structure and is inconvenient to operate.

[0006] In order to solve the above problems, the present invention is achieved through the following technical solutions:

[0007] A simple suction cutter comprises a cutting assembly, a negative pressure assembly and a collecting piece, wherein the cutting assembly comprises a tube body, an incision arranged on the side wall of the tube body and a cutter that can slide in the tube body, and the blade end of the cutter is close to the incision; the negative pressure assembly is arranged at one end of the tube body, and the cutter is connected to the negative pressure assembly, so that pushing the negative pressure assembly and the cutter are simultaneously pushed to cut; the collecting piece is arranged on the side wall of the tube body and is connected to the tube body, and the collecting piece is located between the incision and the negative pressure assembly; moving the cutter can cause the blade end of the cutter to slide through the incision.

[0008] Furthermore, the cutter is in a tubular shape at one end close to the incision and adapted to fit the tube body.

[0009] Furthermore, the cutter is provided with a guide member, and the guide member is used to enable the cutter to move in contact with the inner wall of the tube body.

[0010] Furthermore, the guide member is a guide ring provided at one end of the cutter away from the negative pressure assembly, and the outer circumference of the guide ring is adapted to the inner circumference of the tube body.

[0011] Furthermore, the guide members are guide posts arranged on both sides of the cutter in the longitudinal direction, and the interior of the tube body is provided with guide grooves adapted to the guide posts.

[0012] Furthermore, the negative pressure component includes a longitudinally retractable air pump, a first one-way valve arranged on the air pump, and a second one-way valve; wherein, the air pump is arranged at the end of the tube body and is connected to the tube body, the first one-way valve is used for the air pump to exhaust to the outside, and the second one-way valve is used for the tube body to exhaust toward the air pump.

[0013] Furthermore, the second one-way valve is arranged between the collecting member and the air pump, and a through hole is provided between the second one-way valve and the inner wall of the tube body, and the through hole is adapted to the longitudinal cross section of the cutter.

[0014] Furthermore, a through hole is provided between the second one-way valve and the inner wall of the tube body, and the through hole is adapted to the longitudinal cross-section of the cutter. The second one-way valve is arranged at a position opposite to the air pump and the inner cavity of the tube body. A channel is provided between the side of the air pump on which the second one-way valve is provided and the tube body, and the channel is adapted to the longitudinal cross-section of the cutter.

[0015] Furthermore, the second one-way valve is arranged at a position opposite to the inner cavity of the air pump and the tube body, and an internal tube is provided on the side of the air pump away from the tube body toward the tube body, and the internal tube is communicated with the tube body, and the internal tube is used to place the end of the cutter away from the incision.

[0016] Furthermore, the collecting piece protrudes from the outer wall of the tube body, and the collecting piece is detachably connected to the tube body.

[0017] Compared with the prior art, the technical solution of the present invention and its beneficial effects are as follows:

[0018] (1) The cutter of the present invention integrates the cutting and collection of polyps into one, and there is no need to replace the equipment. The polyps are cut while generating negative pressure, which reduces the operating procedures and eliminates the need for components such as external power cords and external negative pressure pipelines, greatly simplifying the structure of the equipment and reducing the cost of the equipment.

[0019] (2) The negative pressure component of the present invention cleverly combines the air pump with the one-way valve, so that the negative pressure suction effect can be achieved by manually squeezing the air pump, eliminating the need for external power cords and external negative pressure pipelines.

[0020] (3) The cutter of the present invention is provided with a guide member, so that the cutter always slides in close contact with the inner wall of the tube body, thereby enabling the blade end of the cutter to cut the polyp more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a cross-sectional view of a simple suction cutter provided in Example 1 of the present invention;

[0022] Figure 2 yes Figure 1 Cross-sectional view in the AA direction;

[0023] Figure 3 This is a cross-sectional view of a simple suction cutter provided in the second embodiment of the present invention;

[0024] Figure 4 yes Figure 3 Cross-sectional view in the middle BB direction;

[0025] Figure 5 This is a cross-sectional view of a simple suction cutter provided in the third embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view of a simple suction cutter provided by the fourth embodiment of the present invention;

[0027] Figure 7 This is a cross-sectional view of a simple suction cutter provided in Example 5 of the present invention;

[0028] Figure 8 yes Figure 7 Enlarged view of the air pump;

[0029] Figure 9 yes Figure 7 Another example picture of the air pump.

[0030] Illustration:

[0031] Tube body 1; guide groove 11; incision 2; cutter 3; blade end 31; guide member 4; air pump 5; first one-way valve 6; second one-way valve 7; collecting member 8; internal tube 9. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] See Figure 1 A simple suction cutter includes a cutting assembly, a negative pressure assembly, and a collector 8. The cutting assembly includes a tube 1, an incision 2 provided on the sidewall of the tube 1, and a cutter 3 slidable within the tube 1, with the blade end 31 of the cutter 3 adjacent to the incision 2. The negative pressure assembly is provided at one end of the tube 1, and the cutter 3 is connected to the negative pressure assembly so that pushing the negative pressure assembly simultaneously pushes the cutter 3 to cut, and moving the cutter 3 causes the blade end 31 of the cutter to slide over the incision 2. The collector 8 is provided on the sidewall of the tube 1 and is electrically connected to the tube 1. The collector 8 is located between the incision 2 and the negative pressure assembly.

[0034] During use, the end of the tube 1 with the incision 2 is inserted into the human body. The polyp falls into the tube 1 through the incision 2. At this time, the negative pressure component is pushed to generate negative pressure, and the blade end 31 of the cutter 3 is pushed toward the incision 2 to cut the polyp. The polyp falls into the tube 1. The pushing and squeezing of the negative pressure component is released, and the negative pressure generated by the negative pressure component attracts the polyp toward one end of the negative pressure component, causing the polyp to fall into the collection member 8 located between the incision and the negative pressure component. The simple suction cutter of this embodiment integrates the cutting and collection of polyps, eliminating the need for equipment replacement. The polyp is cut while negative pressure is generated, reducing the number of operating procedures, saving surgical time, and alleviating patient pain. Manually pushing the negative pressure component to generate negative pressure eliminates the need for external power cords and external negative pressure piping, greatly simplifying the device structure and reducing its cost.

[0035] It is understood that the incision 2 is as close as possible to the end of the tube body 1 to prevent the tube body 1 from extending too far into the human body and increasing discomfort for the patient. The tube body can be cylindrical or elliptical, or it can be truncated cone-shaped, that is, the inner diameter gradually increases from the incision toward the negative pressure component to prevent clogging.

[0036] The cutter 3 is provided with a guide 4, which is used to make the cutter 3 move in contact with the inner wall of the tube body 1, so that the blade end of the cutter 3 always slides in contact with the inner wall of the tube body 1, and when cutting polyps, the polyps can be cut more thoroughly.

[0037] See Figure 2 In one embodiment, the guide member 4 is a guide ring disposed at the end of the cutter 3 away from the negative pressure assembly. The outer circumference of the guide ring conforms to the inner circumference of the tube body. The guide member 4, being a guide ring, allows the cutter 3 to slide completely along the inner tube of the tube body 1, while also allowing the severed polyp to pass through the guide member toward the negative pressure assembly. It should be noted that the longitudinal length of the guide ring can be adjusted based on actual production needs; that is, the guide ring can also be tubular.

[0038] Continue reading Figure 1 The negative pressure component includes a longitudinally retractable air pump 5, a first one-way valve 6 provided on the air pump, and a second one-way valve 7 provided in the tube body. The air pump is provided at the end of the tube body 1 and is in communication with the tube body 1. The first one-way valve 6 is used to exhaust the air pump 5 toward the outside, and the second one-way valve 7 is used to exhaust the air from the tube body 1 toward the air pump 5. The second one-way valve 7 is provided between the collecting member 8 and the air pump 5. A through hole (not shown) is provided between the second one-way valve 7 and the inner wall of the tube body 1. The through hole is adapted to the longitudinal cross-section of the cutter 3, so that the cutter 3 can slide smoothly while avoiding a gap between the second one-way valve 7 and the cutter 3 being too large, which would affect the effect of the negative pressure.

[0039] During use, the air pump 5 is squeezed toward the incision 2, pushing the cutter 3 to slide toward the incision 2. At the same time, the gas in the air pump 5 is discharged from the first one-way valve 6 to the outside of the inflatable tube 5. When the cutting is completed, the air pump 5 is released. The air pressure inside the air pump is lower than the external air pressure, thus forming a negative pressure. The air enters the air pump 5 through the incision 2, the inside of the tube 1, and the second one-way valve 7. The negative pressure generated by the air pump 5 during the process of recovering its deformation attracts the polyps and fragmented human tissues around the incision 2 into the collection piece 8.

[0040] Furthermore, a collecting member 8 protrudes from the outer wall of the tube body 1. During use, the collecting member 8 is used to collect excised polyps or other human tissues. Furthermore, when the thumb squeezes the air pump 5, the index or middle finger is placed on one side of the collecting member to prevent the finger from slipping, making it easier for the thumb to apply force when squeezing the air pump 5. The collecting member 8 is detachably connected to the tube body 1. The detachable connection here can be a threaded connection or a snap connection. The detachable design of the collecting member 8 makes cleaning the cutter more convenient.

[0041] It is understandable that the collecting piece 8 and the incision 2 are located on opposite sides of the tube body 1. When the collecting piece 8 is held or pressed against by fingers, the incision 2 can be well exposed to align with the polyp position without blocking the line of sight.

[0042] Example 2

[0043] See Figure 3 and Figure 4 The principle of this embodiment is the same as that of the first embodiment, except that the guide structure of this embodiment is different. The guide members 4 of this embodiment are guide posts arranged on both longitudinal sides of the cutter 3, and the interior of the tube body 1 is provided with guide grooves 11 adapted to the guide posts. The guide posts slide in the guide grooves 11 to ensure that the cutter 3 always slides in contact with the inner wall of the tube body 1.

[0044] Example 3

[0045] See Figure 5 The principle of this embodiment is the same as that of the first embodiment, except that no guide member is provided in this embodiment, and the end of the cutter 3 close to the incision 2 is provided as a tubular shape adapted to the tube body 1, that is, the blade end 31 is tubular, and the cutter 3 adapts itself to the tube body 1, and also serves as a guide while cutting.

[0046] Example 4

[0047] See Figure 6 This embodiment is modified from the first, second, or third embodiment, with the difference being that the second one-way valve 7 of this embodiment is disposed opposite the inner cavity of the air pump 5 and the tube body 1. That is, when the second one-way valve 7 is opened, communication between the tube body 1 and the air pump 5 is established. A channel (not shown) is provided between the side of the air pump 5 where the second one-way valve is disposed and the inner wall of the tube body. The channel is adapted to the longitudinal cross-section of the cutter 5, thereby allowing the cutter 3 to slide smoothly while preventing an excessive gap between the second one-way valve 7 and the cutter 3, which would affect the negative pressure effect.

[0048] Example 5

[0049] See Figure 7 and Figure 8 The principle of this embodiment is the same as that of the fourth embodiment, except that, in this embodiment, an internal tube 9 is provided on the side of the air pump 5 away from the tube body 1 toward the tube body 1, and the internal tube 9 is connected to the tube body 1. The internal tube 9 is used to place the end of the cutter 3 away from the incision 2.

[0050] In this embodiment, the air pump 5 is communicated with the outside world only through the first one-way valve 6 for exhaust, and is communicated with the tube body only through the second one-way valve 7 for air intake, further ensuring the negative pressure effect after squeezing the air pump 5.

[0051] It is worth noting that the wall of the built-in tube 9 can be configured to be wavy, zigzag or other irregular shapes, such as Figure 9 , so that when the air pump 5 is squeezed, the built-in tube 9 is compressed in the same direction, thereby preventing the tube wall of the built-in tube 9 from being deformed due to compression and interfering with the cutter 3.

[0052] The simple suction cutter of the present invention cleverly combines suction and cutting into one, reducing the number of times the instrument needs to be replaced during surgery. Through the cooperation of the air pump and the one-way valve, the purpose of suction can be achieved by squeezing the air pump to generate negative pressure, thereby eliminating components such as an external power cord and an external negative pressure pipeline, greatly simplifying the structure of the equipment and reducing the cost of the equipment. In addition, the negative pressure is generated by squeezing the air pump while the cutter is pushed to cut, reducing the intraoperative operating procedures, thereby saving time and alleviating the patient's pain.

[0053] While the foregoing description shows and describes preferred embodiments of the present invention, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments, and can be modified within the scope of the present invention by the teachings herein or by techniques or knowledge in the relevant art. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. A simple suction cutter, characterized in that: include: A cutting assembly comprising a tube body, a notch provided on a side wall of the tube body, and a cutter slidable within the tube body, wherein a blade end of the cutter is adjacent to the notch; A negative pressure component is provided at one end of the tube body, and the cutter is connected to the negative pressure component so that pushing the negative pressure component simultaneously pushes the cutter to perform cutting; a collecting member, the collecting member being disposed on a side wall of the tube body and communicating with the tube body, the collecting member being located between the incision and the negative pressure assembly; wherein, moving the cutter can cause the blade end of the cutter to slide across the incision; The negative pressure assembly includes a longitudinally retractable air pump, a first one-way valve and a second one-way valve provided on the air pump; wherein the first one-way valve is used for the air pump to exhaust air toward the outside, and the second one-way valve is used for the tube body to exhaust air toward the air pump; The second one-way flap is arranged between the collecting member and the air pump, and a through hole is provided between the second one-way flap and the inner wall of the tube body, and the through hole is adapted to the longitudinal cross section of the cutter; Alternatively, the second one-way valve is provided at a position opposite to the inner cavity of the air pump and the tube body, a channel is provided between the side of the air pump provided with the second one-way valve and the tube body, and the channel is adapted to the longitudinal cross-section of the cutter; Alternatively, the second one-way valve is provided at a position opposite to the inner cavity of the air pump and the tube body, and an internal tube is provided on a side of the air pump away from the tube body and facing the tube body, the internal tube is in communication with the tube body, and is used to place an end of the cutter away from the incision; The collecting piece protrudes from the outer wall of the tube body, and the collecting piece is detachably connected to the tube body.

2. A simple suction cutter according to claim 1, characterized in that: The cutter has one end close to the incision and is in a tubular shape adapted to fit the tube body.

3. A simple suction cutter according to claim 1, characterized in that: The cutter is provided with a guide member, and the guide member is used to enable the cutter to move in contact with the inner wall of the tube body.

4. A simple suction cutter according to claim 3, characterized in that: The guide member is a guide ring arranged at one end of the cutter away from the negative pressure component, and the outer periphery of the guide ring is adapted to the inner periphery of the tube body.

5. The simple suction cutter according to claim 3, characterized in that: The guide members are guide posts arranged on both sides of the cutter in the longitudinal direction, and the interior of the tube body is provided with guide grooves adapted to the guide posts.

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