CN118121294A - Coaxial flushing, sucking and cutting coagulator - Google Patents

Abstract

The invention discloses a coaxial flushing, sucking and cutting coagulator, which comprises a control main body, an outer tube assembly and an inner tube assembly, wherein the inner tube assembly is used for allowing flushing liquid and an energy platform instrument to pass through, the proximal end of the outer tube assembly is matched with a human body, the distal end of the outer tube assembly is connected with an external negative pressure pipeline through the control main body, and the inner tube assembly is coaxially sleeved on the inner side of the outer tube assembly in a clearance manner. The invention has the advantages of small pollution range, effective reduction of infection risk and improvement of efficiency.

Description

Coaxial flushing, sucking and cutting coagulator

Technical Field

The invention relates to the technical field of medical appliances, in particular to a coaxial flushing, sucking and cutting condenser.

Background

Laparoscopic surgery (laparoscopy surgery) refers to surgery performed by using modern high-tech medical technology, and is performed by operating surgical instruments outside the abdomen under the monitoring and guidance of a high-tech display screen through a laparoscope in a closed abdominal cavity, and performing operations such as probing, electrocoagulation, hemostasis, tissue separation, incision, suturing and the like on lesion tissues. Compared with the traditional open surgery, the laparoscopic surgery has the advantages of small wound, less complications, quick recovery and the like, and is widely applied to the surgical treatment of various common diseases such as general surgery, urinary surgery, gynaecology and obstetrics, gastroenterology, cardiothoracic surgery and the like.

Irrigation and aspiration of laparoscopic surgery is one of the most basic operating techniques in laparoscopic surgery, however, there are a number of disadvantages to the irrigation aspirators currently used clinically: (1) In the existing flushing aspirator, the flushing and the aspiration share the same channel, and tissue fragments or blood and the like remained on the inner wall of the channel during suction are easy to flow back into the abdominal cavity during flushing, so that flushing liquid is polluted, and meanwhile, the operation efficiency is reduced; (2) The laparoscopic surgery generally requires separation, incision and other operations on lesion tissues, while the existing irrigation aspirator can only perform irrigation and aspiration operations, has a single function, and when operations or functions such as electrocoagulation, electroincision, laser, stone extraction, visualization and the like are required, surgical instruments must be switched, which clearly increases the operation time and reduces the operation efficiency.

There are some techniques in the prior art that can solve some of the above problems. For example, the patent application of the invention of publication No. CN109646729A discloses an adjustable multi-channel flushing aspirator with a separator, which avoids that the tissue fragments or blood and the like remained on the inner wall of the channel during suction are easy to flow back into the abdominal cavity during flushing by arranging a flushing channel and a suction channel respectively, but the multi-channel flushing aspirator has two operation functions of flushing and sucking and has single function. For another example, the invention patent with publication number CN213251910U discloses a multifunctional irrigation aspirator, which divides the irrigation aspirator body into an irrigation channel and an aspiration channel which are not communicated, and integrates an electrocoagulation hook, so that an operator can perform electrocoagulation hemostasis while performing irrigation and aspiration operations; however, the flushing channel and the suction channel of the multifunctional flushing aspirator are respectively positioned at two sides of the flushing suction tube body, after flushing the flushing channel from the cylindrical cavity, flushing fluid flows back into the suction channel from the rectangular cavity after flowing a certain distance from the outside along the length direction of the suction nozzle.

How to solve the problems is a technical problem to be solved.

Disclosure of Invention

The invention aims to provide a coaxial flushing and sucking cutting condenser which has small pollution range, can effectively reduce infection risk and improve efficiency.

In order to achieve the above purpose, the invention adopts the following technical scheme:

The invention provides a coaxial flushing-sucking cutting coagulator, which comprises a control main body, an outer tube assembly and an inner tube assembly, wherein the inner tube assembly is used for allowing flushing liquid and an energy platform instrument to pass through, the proximal end of the outer tube assembly is matched with a human body, the distal end of the outer tube assembly is connected with an external negative pressure pipeline through the control main body, and the inner tube assembly is coaxially sleeved on the inner side of the outer tube assembly in a clearance manner.

Further, the inner tube subassembly includes the inner tube, the distal end of inner tube is connected with inner tube connecting seat and the proximal end of this inner tube passes the control main part and stretches into the inboard of outer tube subassembly, and, the coaxial clearance cover of inner tube is located in the outer tube subassembly and this inner tube and control main part sliding fit, and, the distal end of inner tube connecting seat is provided with at least one coupling assembling, inner tube connecting seat, coupling assembling communicate in proper order.

Further, the coupling assembling is three-way structure, and the near-end of this coupling assembling can dismantle the intercommunication with the distal end of inner tube connecting seat and this coupling assembling's distal end intercommunication is provided with first interface, second interface, the inboard cover of second interface is equipped with can with energy platform apparatus transition or interference fit's liquid blocking piece.

Further, the inner tube comprises at least one inner tube channel, the inner tube connecting seat comprises intermediate channels with the same number as the inner tube channels, and the inner tube channels are communicated with the intermediate channels.

Further, the control main body comprises a main channel, a suction trunk channel and a suction trunk channel interface, the outer pipe assembly is communicated with an external negative pressure pipeline sequentially through the main channel, the suction trunk channel and the suction trunk channel interface, the proximal end of the inner pipe penetrates into the inner side of the outer pipe assembly through the main channel, a valve for actively or passively controlling air flow on-off is arranged on the suction trunk channel, and the outer wall of the distal end of the main channel is connected with a handle.

Further, an anti-seepage plugging piece is arranged at the far end of the trunk channel, and the anti-seepage plugging piece is in sliding fit with the inner tube.

Further, the outer tube assembly comprises an outer tube and an outer tube connecting seat, wherein the outer tube is sleeved on the outer side of the inner tube in a clearance mode, the proximal end of the outer tube is an open end, and the distal end of the outer tube is communicated with the trunk channel through the outer tube connecting seat.

Further, a plurality of side holes are formed in one end, far away from the control main body, of the outer tube, the side holes are arranged in at least one row along the length direction of the outer tube, and an auxiliary baffle is connected to the outer wall of the proximal end of the main channel.

Further, the device further comprises a rear cover, wherein the proximal end of the rear cover is sleeved on the outer side of the distal end of the control main body in a sliding manner, the distal end of the rear cover is connected with the outer wall of the inner tube assembly, and the rear cover is in abutting fit with the distal end face of the control main body through a reset piece capable of undergoing elastic deformation.

Further, the back lid includes back lid, the outside of control main part distal end is located to back lid clearance cover, and, back lid is connected with the inner tube subassembly through a back lid interface and this back lid is close to one side of control main part and is connected with the distal end of piece that resets, and, the outer wall of back lid is provided with pushes away the baffle.

Due to the adoption of the structure, the invention has the following beneficial effects:

According to the invention, the outer tube assembly and the inner tube assembly are arranged, when the energy platform device is used, the inner tube assembly can guide the energy platform device to extend into the abdominal cavity to separate, cut, coagulate and perform other operations on pathological tissues, and can guide the flushing liquid to flush tissue fragments, blood and the like, so that the operation efficiency is high; and because the inner tube assembly coaxial clearance cover is located the inboard of outer tube assembly, evenly to the in-process that all around spouts after the proximal end of inner tube assembly is washed out to the flushing fluid, outside negative pressure pipeline is equal to the appeal that the flushing fluid is peripheral after control main part, outer tube assembly in proper order, and the appeal is more balanced to avoid washing the dirty liquid excessive that produces effectively, prevented that tissue bits and pieces or blood etc. from flowing back to in the abdominal cavity when washing, reduced the scope of pollution and become and reduced the risk of infection.

The invention will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the whole structure of the present invention when the inner pipe channel is one;

FIG. 2 is an exploded view of the structure of the present invention with one inner tube channel;

FIG. 3 is a cross-sectional view of the present invention with one inner tube passageway.

FIG. 4 is a front view of the present invention with two inner tube channels;

FIG. 5 is a cross-sectional view of the present invention with two inner tube channels.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 5, the coaxial flushing-sucking cutting condenser provided by the invention comprises a control main body 1, an outer tube assembly 2 and an inner tube assembly 3 for passing flushing liquid and energy platform instruments, wherein the control main body 1 can control the on-off and the size of air flow, the proximal end of the outer tube assembly 2 is matched with a human body, the distal end of the outer tube assembly 2 is connected with an external negative pressure pipeline through the control main body 1, and the inner tube assembly 3 is coaxially sleeved on the inner side of the outer tube assembly 2 in a clearance manner. During suction, blood or tissue scraps or other waste liquid are sequentially sucked away through the gap between the outer tube assembly 2 and the inner tube assembly, the control main body 1 and the external negative pressure pipeline; during flushing, flushing fluid is flushed into the abdominal cavity through the inner tube assembly 3 for flushing, and the flushing fluid is not restrained by the inner tube assembly and gradually diffuses after the flushing fluid is flushed out of the proximal end of the inner tube assembly 3, and simultaneously forms reflux under the action of attraction force to be sucked into the outer tube assembly 2, so that excessive overflow of the flushing fluid is effectively avoided, the pollution range is reduced, and the risk of infection is reduced; after cutting, coagulation and other operations are performed, the energy platform instrument is guided into the abdominal cavity through the inner tube assembly 3, the inner tube assembly 3 is pushed and pulled to slide along the control main body 1, so that the distal end of the energy platform instrument is conveniently and rapidly controlled to extend out of the distal end of the outer tube assembly for cutting coagulation; and, energy platform apparatus gets into the abdominal cavity through inner tube subassembly 3 and not guides energy platform apparatus through outer tube subassembly 2, on the one hand can avoid negative pressure suction in-process blood or tissue piece etc. to adhere on energy platform apparatus to can improve the smoothness of negative pressure air current, reduce the residual quantity of tissue piece and dirty liquid in outer tube subassembly 2 effectively, further reduce the risk of infection, on the other hand when energy platform apparatus is in operation its proximal end carelessly stained with when touching blood or tissue piece, can conveniently utilize the flushing fluid to wash, avoid blood or tissue piece etc. to remain on energy platform apparatus's proximal end.

In the invention, the inner tube assembly 3 comprises an inner tube 31, wherein the distal end of the inner tube 31 is connected with an inner tube connecting seat 32, the proximal end of the inner tube 31 penetrates through the control main body 1 and stretches into the inner side of the outer tube assembly 2, the inner tube 31 is coaxially sleeved in the outer tube assembly in a clearance fit manner, the inner tube 31 is in sliding fit with the control main body 1, at least one connecting assembly 6 is arranged at the distal end of the inner tube connecting seat 32, and the inner tube 31, the inner tube connecting seat 32 and the connecting assembly 6 are sequentially communicated. In the invention, the inner tube 31 and the inner tube connecting seat 32 are all of a single-channel structure, when in use, flushing fluid and an energy platform apparatus are guided into the abdominal cavity through the connecting component 6, the inner tube connecting seat 32 and the inner tube 31 in sequence, and the inner tube component 3 can be pushed and pulled to slide along the control main body 1 according to the requirement, so that the relative position between the proximal end of the inner tube 31 and the proximal end of the outer tube component 2 can be adjusted, the proximal end of the inner tube 31 can be extended or retracted from the proximal end of the outer tube 21 according to the requirement, the diffusion degree of the flushing fluid after flushing from the proximal end of the inner tube 31 can be restrained by the tube wall of the outer tube component 2 during flushing, the pollution range is limited, the risk of infection is reduced, and the proximal end of the energy platform apparatus can conveniently and rapidly extend out of the outer tube component 2, thereby facilitating the operation such as electrocoagulation, electrotomy and the like.

In the invention, the connecting component 6 is of a three-way structure, the proximal end of the connecting component 6 is detachably communicated with the distal end of the inner tube connecting seat 32, the distal end of the connecting component 6 is communicated with a first interface 61 and a second interface 62, and a liquid-stopping blocking piece 63 which can be in transition or interference fit with an energy platform instrument is sleeved on the inner side of the second interface 62. The proximal end of the connecting component 6 is connected with the distal end of the inner tube connecting seat 32 in a threaded connection or a luer connection or a clamping connection or other detachable connection mode; when the energy platform device is used, the first interface 61 is connected with an external infusion pipeline, flushing fluid enters the inner pipe assembly through the first interface 61, the energy platform device penetrates through the liquid-stopping blocking piece 63 and enters the inner pipe assembly through the second interface 62, and the friction force between the liquid-stopping blocking piece 63 and the outer wall of the energy platform device can effectively fix the position of the energy platform device, so that the energy platform device is prevented from sliding in an unplanned mode.

In the present invention, the inner tube 31 includes at least one inner tube channel 311, the inner tube connecting seat 32 includes intermediate channels 321 equal to the inner tube channels 311, and the inner tube channels 311 are in communication with the intermediate channels 321. When the number of the inner pipe channels 311 is one, the number of the middle channels 321 is one, the number of the connecting components 6 is one, and the inner pipe channels 311, the middle channels 321 and the connecting components 6 are sequentially communicated to form a pipeline through which the energy platform instrument and the flushing fluid pass simultaneously; when the number of the inner tube channels 311 is greater than one, the number of the intermediate channels 321 is equal to the number of the inner tube channels 311, wherein one inner tube channel 311 is communicated with one intermediate channel 321 to form a flushing pipeline, and the other inner tube channel 311 is sequentially communicated with the other intermediate channel 321 and the connecting component 6 to form an instrument pipeline. The flushing pipeline is not communicated with the instrument pipeline and is respectively used for independently guiding flushing liquid or different instruments to enter the abdominal cavity, so that the large-area wetting of the instruments by the flushing liquid can be effectively avoided. In the present invention, when the number of the inner tube passages 311 is one, the inner tube passages 311 are coaxial with the outer tube 21; when the number of the inner pipe channels 311 is two, the two inner pipe channels 311 are arranged side by side up and down in a shape of 8 in cross section; when the number of the inner pipe passages 311 is greater than or equal to three, each inner pipe passage 311 is arranged to form a regular polygon structure when connecting lines between the central axes of the inner pipe passages 311 and the central axes of the adjacent inner pipe passages 311 are sequentially connected.

In the invention, the control main body 1 comprises a main channel 11, a suction trunk channel 12 and a suction trunk channel interface 13, and the outer tube assembly 2 is communicated with an external negative pressure pipeline through the main channel 11, the suction trunk channel 12 and the suction trunk channel interface 13 in sequence, so that blood or tissue scraps or other sewage and waste liquid can be sucked; the proximal end of the inner tube 31 penetrates into the inner side of the outer tube assembly 2 through the main channel 11, and the suction trunk 12 is provided with a valve 14 for actively or passively controlling the on-off of air flow, wherein the valve 14 is a pressing valve, a rotary valve, an electric valve or other valves with common structures can be adopted; the valve 14 may be configured to actively attract or may be configured to passively attract; when the valve 14 is set as an active suction valve, the valve 14 is pressed, suction is suspended, the valve 14 is not pressed, and suction is started; when the valve 14 is set as a passive suction valve, the valve 14 is pressed, suction is started, the valve 14 is not pressed, and suction is suspended; the outer wall of the distal end of the main channel 11 is connected with a handle 15, which is convenient to hold and operate.

In the present invention, the distal end of the trunk channel 11 is provided with an impermeable seal 111, and the impermeable seal 111 is slidably engaged with the inner tube 31. The inner diameter of the anti-seepage plugging piece 111 is equal to the outer diameter of the inner tube 31 and is coaxial with the inner tube, the relative displacement between the inner tube 31 and the main channel 11 is not influenced, the sealing effect can be achieved, the negative pressure is effectively improved, the leakage of the sewage is prevented, the inner tube 31 can be effectively supported, and the inner tube 31 is coaxial with the outer tube assembly 2.

In the present invention, the outer tube assembly 2 includes an outer tube 21 and an outer tube connecting seat 22, the outer tube 21 is sleeved outside the inner tube 31 in a gap, the proximal end of the outer tube 21 is an open end, and the distal end of the outer tube 21 is communicated with the main channel 11 through the outer tube connecting seat 22. The outer tube connecting seat 22 is connected with the proximal end of the main channel 11 in a threaded connection or a luer connection or a clamping connection or other detachable connection mode; in use, blood or tissue debris or other waste liquid can be drawn into the external negative pressure line sequentially through the gap between the outer tube 21 and the inner tube 31, the gap between the inner tube 31 and the main channel 11, the suction trunk 12, the suction trunk interface 13.

In the present invention, a plurality of side holes 211 are formed at one end of the outer tube 21 away from the control body 1, and each side hole is arranged in at least one row along the length direction of the outer tube 21, and an auxiliary baffle 112 is connected to the outer wall of the proximal end of the main channel 11. In the invention, the front end of the outer tube 21 is provided with three rows of side holes 211, the number of the side holes 211 in each row is five, and when in suction, the waste liquid generated by blood or tissue scraps or flushing can be sucked into the outer tube 21 from the proximal end port of the outer tube 21 and the side holes 211, so that the suction efficiency is improved; the auxiliary barrier 112 serves to enhance the comfort of the grip.

The invention further comprises a rear cover 4, wherein the proximal end of the rear cover 4 is slidably sleeved on the outer side of the distal end of the control main body 1, the distal end of the rear cover 4 is connected with the outer wall of the inner tube assembly 3, the rear cover 4 is in abutting fit with the distal end face of the control main body 1 through a reset piece 5 capable of elastically deforming, and the rear cover 4 is in abutting fit with the distal end face of the control main body 1 through a reset piece 5 capable of elastically deforming. When the electric coagulation electric cutting device is used, the rear cover 4 is pressed, the reset piece 5 is compressed, the inner tube assembly 3 linearly slides along the control main body 1, and then the proximal end of the energy platform instrument is controlled to extend out of the outer tube assembly 2, so that the electric coagulation electric cutting operation and other operations can be conveniently controlled; the reset piece 5 can be made of elastic materials or structures such as elastic rubber, elastic silica gel or springs, and the like, after the operation is finished, the rear cover 4 is loosened, the reset piece 5 stretches to reset the inner tube assembly 3 and the energy platform device, and subsequent flushing and suction are not affected.

In the present invention, the rear cover 4 includes a rear cover body 41, the rear cover body 41 is sleeved outside the distal end of the control main body 1 in a clearance manner, the rear cover body 41 is connected with the inner tube assembly 3 through a rear cover interface 42, one side of the rear cover body 41, which is close to the control main body 1, is connected with the distal end of the reset member 5, and the outer wall of the rear cover body 41 is provided with a pushing baffle 43. The pushing baffle 43 is an annular structure surrounding the outer wall of the rear cover 41 or two plate structures symmetrically arranged on two sides of the rear cover 41; when in use, the push baffle 43 is pressed to drive the rear cover 41, the rear cover interface 42 and the inner pipe assembly 3 to move in sequence; the distal end of the rear cap interface 42 is fixedly connected with the proximal end of the inner tube connecting seat 32 or detachably connected in a threaded connection or luer connection or clamping manner; the reset piece 5, the rear cover body 41, the main channel 11 and the outer tube assembly 2 are coaxial.

When the invention is used, the flushing liquid sequentially passes through the first interface 61, the connecting component 6, the inner tube connecting seat 32 and the inner tube 31 and is sprayed out of the proximal end of the outer tube 21, so that the tissue fragments or blood can be flushed; and, through the suction trunk road interface 13, the blood or tissue scraps or other sewage and waste liquid can be sucked away through the gap between the outer tube 21 and the inner tube 31, the gap between the inner tube 31 and the main channel 11, the suction trunk road 12, the suction trunk road interface 13 and the external negative pressure pipeline in sequence; in addition, the proximal end of the energy platform apparatus passes through the liquid-stopping blocking member 63 and sequentially extends into the proximal end of the outer tube 21 through the second interface 62, the connecting component 6, the inner tube connecting seat 32 and the inner tube 31, so that separation, incision, coagulation and other operations can be performed on lesion tissues, and the pushing and pressing baffle 43 can be pressed as required to sequentially drive the rear cover body 41, the rear cover interface 42, the inner tube connecting seat 32, the connecting component 6, the liquid-stopping blocking member 63 and the energy platform apparatus to move forward, so that the proximal end of the energy platform apparatus approaches or extends out of the outer tube 21, and convenience in operations such as electrocoagulation, electrotome and the like can be effectively improved.

The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, using the methods and technical contents disclosed above, without affecting the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (10)

1. A coaxial flushing and sucking cutting coagulator, comprising a control main body (1); the method is characterized in that: the multifunctional energy platform device comprises an outer tube assembly (2) and an inner tube assembly (3) used for allowing flushing liquid and energy platform instruments to pass through, wherein the proximal end of the outer tube assembly (2) is matched with a human body, the distal end of the outer tube assembly (2) is connected with an external negative pressure pipeline through a control main body (1), and the inner side of the outer tube assembly (2) is sleeved with a coaxial gap of the inner tube assembly (3).

2. The in-line flush-suction cut coagulator of claim 1, wherein: the inner tube subassembly (3) includes inner tube (31), the distal end of inner tube (31) is connected with inner tube connecting seat (32) and the proximal end of this inner tube (31) passes control main part (1) and stretches into the inboard of outer tube subassembly (2), and, inner tube (31) coaxial clearance cover is located in the outer tube subassembly and this inner tube (31) and control main part (1) sliding fit, and, the distal end of inner tube connecting seat (32) is provided with at least one coupling assembling (6), inner tube (31), inner tube connecting seat (32), coupling assembling (6) communicate in proper order.

3. The in-line flush-suction cut coagulator of claim 2, wherein: the connecting assembly (6) is of a three-way structure, the proximal end of the connecting assembly (6) is detachably communicated with the distal end of the inner tube connecting seat (32), a first interface (61) and a second interface (62) are arranged at the distal end of the connecting assembly (6), and a liquid-stopping blocking piece (63) which can be in transition or interference fit with an energy platform instrument is sleeved on the inner side of the second interface (62).

4. The in-line flush-suction cut coagulator of claim 3, wherein: the inner tube (31) comprises at least one inner tube channel (311), the inner tube connecting seat (32) comprises intermediate channels (321) the number of which is equal to that of the inner tube channels (311), and the inner tube channels (311) are communicated with the intermediate channels (321).

5. The in-line flush-suction cut coagulator of any one of claims 2 to 4, wherein: the control main body (1) comprises a main channel (11), a suction trunk channel (12) and a suction trunk channel interface (13), the outer tube assembly (2) is sequentially communicated with an external negative pressure pipeline through the main channel (11), the suction trunk channel (12) and the suction trunk channel interface (13), the proximal end of the inner tube (31) penetrates into the inner side of the outer tube assembly (2) through the main channel (11), and a valve (14) for actively or passively controlling air flow on-off is arranged on the suction trunk channel (12), and the outer wall of the distal end of the main channel (11) is connected with a handle (15).

6. The in-line flush-suction cut coagulator of claim 5, wherein: the distal end of the main channel (11) is provided with an anti-seepage plugging piece (111), and the anti-seepage plugging piece (111) is in sliding fit with the inner tube (31).

7. The in-line flush-suction cut coagulator of claim 5, wherein: the outer tube assembly (2) comprises an outer tube (21) and an outer tube connecting seat (22), the outer tube (21) is sleeved on the outer side of the inner tube (31) in a clearance mode, the proximal end of the outer tube (21) is an open end, and the distal end of the outer tube (21) is communicated with the trunk channel (11) through the outer tube connecting seat (22).

8. The in-line flush-suction cut coagulator of claim 7, wherein: a plurality of side holes (211) are formed in one end, far away from the control main body (1), of the outer tube (21), the side holes are arranged in at least one row along the length direction of the outer tube (21), and an auxiliary baffle (112) is connected to the outer wall of the proximal end of the main channel (11).

9. The in-line flush-suction cut coagulator of any one of claims 1 to 4, wherein: the control device is characterized by further comprising a rear cover (4), wherein the proximal end of the rear cover (4) is sleeved on the outer side of the distal end of the control main body (1) in a sliding manner, the distal end of the rear cover (4) is connected with the outer wall of the inner tube assembly (3), and the rear cover (4) is in abutting fit with the distal end face of the control main body (1) through a reset piece (5) capable of undergoing elastic deformation.

10. The in-line flush-suction cut coagulator of claim 9, wherein: the rear cover (4) comprises a rear cover body (41), the rear cover body (41) is sleeved on the outer side of the far end of the control main body (1) in a clearance mode, the rear cover body (41) is connected with the inner pipe assembly (3) through a rear cover interface (42), one side, close to the control main body (1), of the rear cover body (41) is connected with the far end of the reset piece (5), and a pushing baffle (43) is arranged on the outer wall of the rear cover body (41).