A single-handed force-enhanced closed blood clot suction device special for urological bladder flushing

Abstract

The application discloses a special single-hand force-amplification type closed blood clot suction device for urinary surgery bladder flushing, relates to the field of postoperative instruments of urinary surgery, and comprises a holding main body, a liquid storage and suction unit, a bearing assembly and an integrated valve body. The holding main body is configured as a gun-shaped straight holding structure, and a mechanical torque amplification assembly is arranged on the inner side of the holding main body. The torque amplification assembly is used for converting single-hand holding force into linear driving force to form force-amplification type linkage with the liquid storage and suction unit. The holding main body comprises a gun-shaped shell, an operation trigger and a force-amplification structure. The gun-shaped shell is an integrated straight holding structure. The operation trigger and the force-amplification structure are arranged on the lower end and the inner side of the gun-shaped shell respectively. The liquid storage and suction unit is configured as a large-volume syringe. The special single-hand force-amplification type closed blood clot suction device for urinary surgery bladder flushing realizes single-hand force-amplification suction and closed circulation waste discharge through the gun-shaped holding main body and the gear and rack force-amplification mechanism, the integrated valve body and the negative pressure amplification cavity.

Description

Technical Field

[0001] This invention relates to surgical instruments for urological surgery, specifically to a single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation. Background Technology

[0002] In urological clinical treatment, transurethral resection of the prostate (TURP) and transurethral resection of bladder tumor (TURP) are important methods for treating benign prostatic hyperplasia (BPH) and bladder tumors. These surgeries have advantages such as minimal invasiveness, rapid recovery, and wide applicability, and are widely used globally. However, because the procedure requires high-frequency electroresection and electrocoagulation of the prostate tissue or bladder wall, postoperative bleeding is inevitable. After entering the bladder, the blood mixes with urine during its stay and is easily coagulated into blood clots of varying sizes due to factors such as temperature, pH, and ion concentration.

[0003] If blood clots in the bladder are not cleared promptly, they can trigger a series of chain reactions: First, the clots can block the side openings and lumen of the catheter, obstructing urine drainage, leading to increased bladder pressure and bladder spasms, manifesting as lower abdominal pain, frequent urination, and reflex hypertension. Second, urinary retention increases the risk of retrograde urinary tract infections, especially in elderly patients with weakened immune systems. Third, long-term accumulation of blood clots can compress blood vessels in the wound, affecting normal healing and even inducing secondary bleeding, forcing patients to undergo secondary surgery or interventional hemostasis. These complications not only significantly increase patient suffering but also prolong hospital stays, increase overall medical costs, and burden the healthcare system.

[0004] In current clinical nursing procedures, a three-lumen balloon catheter is routinely placed postoperatively for continuous bladder irrigation. The main purpose of continuous irrigation is to dilute the blood in the bladder, preventing it from coagulating rapidly in a cold environment, and to remove small blood clots through the flowing irrigation fluid. However, for larger, harder, and older blood clots, continuous irrigation alone is often ineffective. In such cases, nursing staff typically need to use a large-capacity syringe (such as 50mL, 60mL, or 100mL) connected to the catheter irrigation port for manual injection and aspiration. The specific steps include: disconnecting the catheter from the drainage bag, connecting the syringe filled with normal saline to the catheter interface, slowly injecting a certain amount of irrigation fluid, and then quickly aspirating to create negative pressure to draw out the blood clots. The inventor has searched and found the following existing bladder irrigation and aspiration devices:

[0005] 1) Announcement No. CN214970053U discloses a push-injection aspiration bladder irrigation device. In this patent application, it includes an infusion bag and a urinary catheter. The urinary catheter has a hole at the front end and three cavities at the rear end. The ports of the three cavities are respectively connected to the infusion bag, the push-injection aspiration component, and the drainage bag. The push-injection aspiration component includes a connecting tube, which is connected to one end of a three-way valve, and the other two ends are respectively connected to two syringes. This utility model has a simple structure and can be flexibly combined to meet the needs of continuous bladder irrigation or manual intervention irrigation.

[0006] 2) Publication No. CN219307537U discloses a bladder irrigator. This patent application includes a syringe with a four-way assembly at its end. The four-way assembly includes a four-way valve, and four ends of the four-way valve are sequentially fixedly fitted with a first threaded tube, a sleeve, a second threaded tube, and an outer tube. The syringe and sleeve are interlocked. An irrigation fluid bag is positioned above the four-way valve, and a drainage bag is positioned below the four-way valve. Both the irrigation fluid bag and the drainage bag are fixedly fitted with threaded connectors via flexible tubing. Two threaded connectors are threadedly connected to the first and second threaded tubes, respectively. This invention allows for both suction irrigation and drainage operations on the same device, making it convenient and user-friendly.

[0007] 3) Patent application CN115845175A discloses a bladder irrigation device and its irrigation method. This patent application includes: a first three-way valve, with its first end connected to irrigation fluid and its second end connected to an injection tube that communicates with the inlet channel of a three-lumen catheter for injecting irrigation fluid into the bladder; a third end of the first three-way valve is connected to an irrigation tube, which is connected to a first switch three-way valve. The second end of the first switch three-way valve is connected to a syringe, and the third end of the first switch three-way valve is connected to a second switch three-way valve. The second end of the second switch three-way valve is connected to a drainage bag, and the third end of the second switch three-way valve communicates with the outlet channel of the three-lumen catheter for draining irrigation fluid into the drainage bag. This invention, through the above-described configuration, eliminates the need to repeatedly disconnect the connection between the drainage bag and the outlet channel, reducing the probability of accidental leakage of blood, urine, and irrigation fluid, and decreasing the risk of infection.

[0008] While the aforementioned existing technologies can achieve the basic functions of bladder irrigation and blood clot aspiration, optimize the tubing connection structure, and reduce the risk of tubing leakage, they still have core defects that cannot be avoided in the special clinical scenarios of high altitudes. Specifically, the atmospheric pressure in high-altitude areas is much lower than the standard atmospheric pressure in plains areas, which leads to an inherent decrease in the negative pressure of conventional syringes and insufficient aspiration power, making it impossible to effectively remove tough and viscous bladder blood clots after aspiration. At the same time, there is a lack of a dedicated structure for real-time quantitative detection of intraoperative blood loss. Relying solely on manual visual estimation of the drainage bag to estimate the amount of blood loss results in large errors and data lag, making it impossible to immediately and accurately determine the patient's active bleeding status. As a result, the device is difficult to adapt to the needs of efficient blood clot removal and clinical monitoring after surgery in urology departments at the grassroots level in high-altitude areas. Summary of the Invention

[0009] The purpose of this invention is to provide a single-handed, power-enhancing, closed-loop blood clot aspiration device specifically designed for bladder irrigation in urology, in order to solve the problem that existing technologies cannot effectively remove tough blood clots in high-altitude areas due to insufficient negative pressure during aspiration and the lack of mechanical power-enhancing mechanisms.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a single-handed, power-enhancing, closed-loop blood clot aspiration device specifically designed for urological bladder irrigation, comprising:

[0011] A grip body is configured as a gun-shaped straight grip structure, and a mechanical torque amplification component is provided on its inner side. This torque amplification component is used to convert the single-hand grip force into a linear driving force to form a force-amplifying linkage with the liquid storage and suction unit.

[0012] A liquid storage and aspiration unit is configured as a large-volume syringe. The syringe body and piston form a liquid storage chamber and a push-pull rod, respectively. The push-pull rod is connected to a torque amplification component on the gripping body and, under the force amplification drive of the torque amplification component, realizes the aspiration of tough blood clots and the push of flushing fluid.

[0013] A support component is fixed to the upper end of the gripping body and used to fix the injection cylinder. The support component includes a tail end limiting seat, a cylinder positioning buckle and a front end interface positioning groove arranged sequentially along the axial direction of the gripping body.

[0014] An integrated valve body is connected to the front end of the syringe. The integrated valve body has an integrally formed inlet channel, outlet channel and flushing channel. The inlet channel, outlet channel and flushing channel are respectively connected to the urine catheter interface, the waste liquid collection device unit and the flushing liquid supply unit. Each of the inlet channel, outlet channel and flushing channel is equipped with a pressure-sensing check valve.

[0015] Furthermore, the grip body includes a gun-shaped housing, an operating trigger, and a force-enhancing structure. The gun-shaped housing is a one-piece straight grip structure, and the operating trigger and the force-enhancing structure are respectively provided at the lower end and the inner side of the gun-shaped housing.

[0016] Furthermore, the force amplification structure is a mechanical torque amplifier based on gear and rack transmission. The input end of the force amplification structure is connected to the operating trigger, and the output end of the force amplification structure is connected to the push-pull fixed base. The operating trigger is hinged to the lower part of the gun housing, and its hinge point on the gun housing forms an optimized lever arm with the force-bearing point of the input end of the force amplification structure.

[0017] Furthermore, the push-pull fixing seat has an L-shaped cross section, with one end rigidly connected to the output end of the torque amplification component, and the other end provided with a slot for locking and fixing the tail end of the push-pull rod, so as to directly transmit the linear driving force output by the torque amplification component to the push-pull rod and drive it to move along the axis of the injection cylinder.

[0018] Furthermore, the positioning buckle of the syringe body is an adjustable elastic buckle structure, which can hug the outer wall of the syringe body radially, and is compatible with three standard sizes of syringes: 50mL, 60mL or 100mL, to achieve quick assembly and disassembly and stable fixation.

[0019] Furthermore, the urine catheter interface of the integrated valve body is a spiral anti-detachment threaded interface, which is sealed and locked with the urine catheter connector to prevent air leakage or detachment under high-pressure suction, and to ensure the airtightness of the closed flushing and suction process.

[0020] Furthermore, a miniature negative pressure amplification chamber is connected in series between the liquid storage suction unit and the integrated valve body. The miniature negative pressure amplification chamber is equipped with an elastic silicone isolation membrane to separate the interior of the chamber into a working medium side and a gas pressure compensation side.

[0021] Furthermore, the waste liquid collection device unit is a drainage bag or drainage tube. The drainage bag or drainage tube integrates a liquid detection channel that communicates with the liquid inlet. A capillary fiber indicator strip is arranged axially inside the liquid detection channel. The surface of the capillary fiber indicator strip is treated with hydrophobic-hydrophilic regionalization. When blood-containing fluid flows through it, blood cells preferentially adsorb onto the hydrophilic region to form a visible color accumulation band. The outer wall of the drainage bag or drainage tube is printed with blood volume scales corresponding to the number of times the syringe is emptied. The corresponding bleeding volume value can be matched according to the extension length of the color accumulation band, realizing real-time, non-contact, and visual quantitative observation of bleeding volume, avoiding the problems of large errors and data lag caused by traditional visual estimation.

[0022] Compared with existing technologies, this invention provides a single-handed, power-enhancing, closed-loop blood clot aspiration device specifically designed for urological bladder irrigation. Through the coordinated operation of a gun-shaped, straight-grip holding body and a built-in mechanical torque amplification component, combined with an integrated valve design, it solves the problems of reduced negative pressure during aspiration at high altitudes and the difficulty in removing thick, tough blood clots post-surgery. Specific technical effects include the following:

[0023] 1. The gun-shaped grip body is combined with a gear and rack torque amplification component, which can convert the single-hand grip force into an amplified linear driving force, greatly improving the suction and injection force. It can efficiently peel off and aspirate tough and viscous blood clots in the bladder, reducing the difficulty of operation. In addition, the whole machine adopts an integrated gun-shaped design, which, together with the integrated valve body, can realize the seamless switching of suction, flushing and waste discharge modes.

[0024] 2. The load-bearing component is equipped with an adjustable elastic buckle, which can be adapted to commonly used large-volume syringes in clinical practice. Moreover, the syringes are easy to disassemble and replace, and are securely fixed.

[0025] 3. By connecting a micro negative pressure amplification chamber in series between the liquid storage suction unit and the integrated valve body, the negative pressure loss caused by the low atmospheric pressure in high-altitude areas can be automatically compensated, ensuring that the suction negative pressure is within a reasonable range and solving the problem of insufficient suction force of conventional instruments in high-altitude environments.

[0026] 4. The waste liquid collection unit has a built-in independent liquid detection channel and a modified capillary fiber indicator strip. Combined with the blood volume scale on the outer wall, the volume of flowing liquid can be intuitively determined by the color accumulation band formed by blood cell adsorption. This replaces the traditional manual visual inspection method, enabling real-time and accurate monitoring of postoperative bleeding, and facilitating medical staff to determine whether the patient has active bleeding as soon as possible. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the application of the miniature negative pressure amplification cavity in Embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Holding body; 101. Gun-shaped shell; 102. Operating trigger; 103. Force-enhancing structure; 2. Injector; 201. Push-pull rod; 3. Integrated valve body; 301. Liquid inlet channel; 302. Liquid outlet channel; 303. Flushing channel; 4. Push-pull fixing seat; 5. Tail end limiting seat; 6. Cylinder body positioning buckle; 7. Front end interface positioning groove; 8. Miniature negative pressure amplification chamber; 9. Waste liquid collection device unit; 901. Capillary fiber indicator strip. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] As attached Figure 1 As shown:

[0035] Example 1:

[0036] This invention provides a single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation, comprising a gripping body 1, a liquid storage and aspiration unit, a support component, and an integrated valve body 3.

[0037] 1. In one embodiment of the present invention, the gripping body 1 is configured as a gun-shaped straight grip structure, and a mechanical torque amplification component is provided on its inner side. The torque amplification component is used to convert the single-hand gripping force into a linear driving force to form a force-amplifying linkage with the liquid storage and aspiration unit. The gripping body 1 includes a gun-shaped housing 101, an operating trigger 102, and a force-amplifying structure 103, wherein the gun-shaped housing 101 is an integral straight grip structure, and the operating trigger 102 and the force-amplifying structure 103 are respectively provided on the lower end and inner side of the gun-shaped housing 101.

[0038] 2. In one embodiment of the present invention, the liquid storage and aspiration unit is configured as a large-volume syringe 2. The syringe 2 has a body and a piston forming a liquid storage chamber and a push-pull rod 201, respectively. The push-pull rod 201 is connected to a torque amplification component on the gripping body 1 and, under the force amplification drive of the torque amplification component, realizes the aspiration of strong blood clots and the pushing of flushing fluid.

[0039] 3. In one embodiment of the present invention, the supporting component is fixed to the upper end of the holding body 1 and is used to fix the syringe 2. The supporting component includes a tail end limiting seat 5, a syringe body positioning buckle 6, and a front end interface positioning groove 7 arranged sequentially along the axial direction of the holding body 1. The syringe body positioning buckle 6 is an adjustable elastic buckle structure, which can hug the outer wall of the syringe body 2 radially, and is compatible with syringes 2 of three standard specifications: 50mL, 60mL, or 100mL, to achieve quick assembly and disassembly and stable fixation.

[0040] 4. In one embodiment of the present invention, the integrated valve body 3 is connected to the front end of the syringe 2. The integrated valve body 3 is integrally formed with an inlet channel 301, an outlet channel 302 and a flushing channel 303. The inlet channel 301, the outlet channel 302 and the flushing channel 303 are respectively connected to the urine catheter interface, the waste liquid collection device unit 9 and the flushing liquid supply unit. Each of the inlet channel 301, the outlet channel 302 and the flushing channel 303 is provided with a pressure-sensing one-way valve.

[0041] 5. In one embodiment of the present invention, the force amplification structure 103 is a mechanical torque amplifier based on gear and rack transmission. The input end of the force amplification structure 103 is connected to the operating trigger 102, and the output end of the force amplification structure 103 is connected to the push-pull fixing seat 4. The operating trigger 102 is hinged to the lower part of the gun housing 101, and its hinge point on the gun housing 101 forms an optimized lever arm with the force-bearing point of the input end of the force amplification structure 103.

[0042] 6. In one embodiment of the present invention, the push-pull fixing seat 4 has an L-shaped cross section, one end of which is rigidly connected to the output end of the torque amplification component, and the other end of which is provided with a slot for locking and fixing the tail end of the push-pull rod 201, so as to directly transmit the linear driving force output by the torque amplification component to the push-pull rod 201 and drive it to move along the axis of the injection cylinder 2.

[0043] 7. In one embodiment of the present invention, the urinary catheter interface of the integrated valve body 3 is a spiral anti-detachment threaded interface, which is sealed and locked with the urinary catheter connector to prevent air leakage or detachment under high-pressure suction, and to ensure the airtightness of the closed flushing and suction process.

[0044] Working Principle: In Example 1, the coordinated operation of the gun-shaped straight-grip holding body 1 and the built-in rack and pinion torque amplification component efficiently amplifies the operator's single-hand grip force. Specifically, when the operator holds the gun-shaped housing 101 with one hand and pulls the trigger 102, the trigger 102 rotates around the hinge point. Its tail pushes the rack and pinion force-enhancing structure 103, converting the trigger's rotational stroke into the rack's linear stroke. This amplified linear driving force is then transmitted to the syringe 2 push-pull rod 201 via the push-pull fixing seat 4. During this process, the operator does not need to rely on the extreme force exerted by their fingertips and the web of their hand to generate sufficient negative pressure to efficiently aspirate tough, viscous blood clots from the bladder. Simultaneously, the integrated valve body 3 automatically switches between aspiration, waste removal, and flushing modes through pressure-sensing one-way valves in each channel. The entire process requires no disassembly of the tubing, forming a closed-loop operation and significantly reducing the risk of retrograde urinary tract infection caused by frequent tubing opening.

[0045] As attached Figure 2 As shown:

[0046] Example 2:

[0047] This embodiment is basically the same as the previous embodiment, except that a miniature negative pressure amplification chamber 8 is connected in series between the liquid storage suction unit and the integrated valve body 3. The miniature negative pressure amplification chamber 8 is provided with an elastic silicone isolation membrane to separate the inside of the chamber into a working medium side and a pressure compensation side.

[0048] The working medium side is connected to the liquid inlet channel 301 of the integrated valve body 3, while the pressure compensation side is exposed to the ambient atmosphere. The elastic silicone diaphragm has good elastic deformation capability and can shift with changes in the pressure difference between the two sides.

[0049] When the piston of the liquid storage suction unit is pulled backward, a negative pressure is generated on the working medium side. Under the action of atmospheric pressure, the elastic silicone diaphragm undergoes elastic deformation displacement towards the pressure compensation side, thereby compensating for the negative pressure loss caused by the low atmospheric pressure within a limited space. When the piston is pushed forward to inject, the pressure on the working medium side increases, the elastic silicone diaphragm returns to its original position, and the excess pressure is released to the pressure compensation side.

[0050] Working Principle: Atmospheric pressure at high altitudes is significantly lower than the standard atmospheric pressure at plains (for example, atmospheric pressure at 3000 meters is approximately 70% of that at plains). This environmental factor inherently weakens the negative pressure generated by conventional syringes during aspiration, resulting in insufficient aspiration power and an inability to effectively remove tough, viscous blood clots from the bladder post-procedure. Therefore, Example 2 effectively solves the technical problem of insufficient aspiration power in high-altitude environments by adding a miniature negative pressure amplification chamber 8. Specifically, when the piston of the syringe 2 is pulled back, a negative pressure linkage is formed between the working medium side of the miniature negative pressure amplification chamber 8 and the liquid inlet channel 301 of the integrated valve body 3. The elastic silicone diaphragm deforms and shifts towards the pressure compensation side, thereby converting the energy of the atmospheric pressure difference into compensating negative pressure, maintaining the actual aspiration negative pressure value acting on the blood clots in the bladder at a level comparable to that in plains.

[0051] As attached Figure 3 As shown:

[0052] Example 3:

[0053] This embodiment is basically the same as the previous embodiment, except that the waste liquid collection device unit 9 is a drainage bag or drainage tube. The drainage bag or drainage tube integrates a liquid detection channel that communicates with the liquid inlet. A capillary fiber indicator strip 901 is arranged axially inside the liquid detection channel. The surface of the capillary fiber indicator strip 901 is treated with hydrophobic-hydrophilic regionalization. When blood-containing body flows through, blood cells preferentially adsorb onto the hydrophilic region to form a visible color accumulation band. The outer wall of the drainage bag or drainage tube is printed with blood volume scales corresponding to the number of times the syringe is emptied. The corresponding bleeding volume value can be matched according to the extension length of the color accumulation band, realizing real-time, non-contact, and visual quantitative observation of bleeding volume, avoiding the problems of large errors and data lag caused by traditional visual estimation.

[0054] Working Principle: To achieve real-time, accurate, and visual monitoring of postoperative bleeding, Embodiment 3 incorporates a specific capillary indicator strip 901 and corresponding blood volume scale within the waste fluid collection unit 9. Specifically, when the aspirated blood-containing body enters the liquid detection channel of the waste fluid collection unit 9, blood cells in the blood come into contact with the surface of the capillary indicator strip 901 during flow. Due to the hydrophobic-hydrophilic regionalization treatment of the indicator strip surface, blood cells preferentially adsorb to the hydrophilic region and gradually accumulate, forming a colored accumulation band. The length of this colored accumulation band is positively correlated with the total volume of the blood-containing body flowing through it; that is, the greater the blood volume, the longer the colored accumulation band. The operator only needs to observe the position of the colored accumulation band on the scale line to quickly and accurately read the current bleeding volume. Compared with the traditional method of manually estimating bleeding volume by visually judging the color depth of the drainage bag, the monitoring method of this embodiment eliminates subjective judgment errors and achieves objective quantitative measurement of bleeding volume, facilitating medical staff to determine whether the patient has active bleeding at the first moment.

[0055] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A single-handed, power-enhancing, closed-loop blood clot aspiration device specifically designed for urological bladder irrigation, characterized in that... include: A gripping body (1) is configured as a gun-shaped straight grip structure. A mechanical torque amplification component is provided on its inner side. The torque amplification component is used to convert the single-hand gripping force into a linear driving force so as to form a force-enhancing linkage with the liquid storage suction unit. A liquid storage and aspiration unit is configured as a large-volume syringe (2). The syringe (2) and piston respectively form a liquid storage chamber and a push-pull rod (201). The push-pull rod (201) is connected to a torque amplification component on the gripping body (1). A support component is fixed on the upper end of the gripping body (1) and used to fix the syringe (2). The support component includes a tail end limiting seat (5), a syringe body positioning buckle (6) and a front end interface positioning groove (7) arranged sequentially along the axial direction of the gripping body (1). An integrated valve body (3) is connected to the front end of the syringe (2). The integrated valve body (3) is integrally formed with an inlet channel (301), a drain channel (302) and a flushing channel (303). The inlet channel (301), the drain channel (302) and the flushing channel (303) are respectively connected to the urine catheter interface, the waste liquid collection device unit (9) and the flushing liquid supply unit. Pressure sensing check valves are provided on the inlet channel (301), the drain channel (302) and the flushing channel (303).

2. The single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 1, characterized in that, The grip body (1) includes a gun-shaped housing (101), an operating trigger (102), and a force-enhancing structure (103). The gun-shaped housing (101) is an integrated straight grip structure. The lower end and inner side of the gun-shaped housing (101) are respectively provided with the operating trigger (102) and the force-enhancing structure (103).

3. The single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 2, characterized in that, The force amplification structure (103) is a mechanical torque amplifier based on gear and rack transmission. The input end of the force amplification structure (103) is connected to the operating trigger (102), and the output end of the force amplification structure (103) is connected to the push-pull fixing seat (4).

4. A single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 3, characterized in that, The push-pull fixing seat (4) has an L-shaped cross section. One end of it is rigidly connected to the output end of the torque amplification component, and the other end is provided with a slot for locking and fixing the tail end of the push-pull rod (201).

5. A single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 1, characterized in that, The cylinder positioning buckle (6) is an adjustable elastic buckle structure.

6. A single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 1, characterized in that, The urinary catheter interface of the integrated valve body (3) is a spiral anti-dislodgement threaded interface, which is sealed and locked with the urinary catheter connector.

7. A single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 1, characterized in that, A miniature negative pressure amplification chamber (8) is connected in series between the liquid storage suction unit and the integrated valve body (3). The miniature negative pressure amplification chamber (8) is equipped with an elastic silicone isolation membrane to separate the interior of the chamber into a working medium side and a gas pressure compensation side.

8. A single-handed, power-enhancing, closed-loop blood clot aspiration device for urological bladder irrigation according to claim 1, characterized in that, The waste liquid collection device unit (9) is a drainage bag or drainage tube. The drainage bag or drainage tube has an integrated liquid detection channel that communicates with the liquid inlet. The liquid detection channel is provided with a capillary fiber indicator strip (901) along the axial direction.

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