Hepatocystic hydatid inner cyst breaking and sucking-out device

Abstract

The device is characterized in that two ends of an inner catheter are tubular bodies with openings, the left end of the inner catheter is connected with a negative pressure device, an outer catheter is a tubular body with the right end closed and the left end open, a first groove hole is formed in the right side face of the outer catheter, and a second groove hole is formed in the left side face of the outer catheter; the inner catheter is sleeved in the outer catheter, a baffle ring is fixed on the outer wall of the left side of the inner catheter and can slide in the outer catheter, and the right part of the inner catheter is sharp; the middle part of the right side of the front handle is hinged with the lower end of a connecting rod through a front handle connecting shaft pin, and the upper end of the connecting rod is hinged with the inner guide pipe through an inner guide pipe connecting shaft pin and moves left and right in the second groove hole; the rear handle is fixedly sleeved on the left side of the outer catheter; the spring is installed between the baffle ring and the left end of the outer guide pipe. The first groove hole where the device is located breaks the hepatic cystic cyst, the hepatic cystic cyst is sucked out of the inner catheter through the negative pressure device, and the device is also used for other surgical operations needing to be cut.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for crushing and sucking out the internal cysts of hepatic cystic echinococcosis. Background Art

[0002] With the advancement of current medical technology and the development of minimally invasive technology, laparoscopic surgery, as one of the minimally invasive surgical methods, is increasingly being used in the treatment of various surgical diseases. When doctors perform laparoscopic surgery, they are highly dependent on laparoscopic equipment, which they need to use to accurately locate the lesion site and confirm the tissue conditions around the lesion site. Therefore, the quality of laparoscopic instruments and equipment directly affects the doctor's surgical operation results.

[0003] As a parasitic disease, hepatic cystic echinococcosis is characterized by expansive growth, which in turn aggravates the patient's pain. Domestic experts have a consensus on the recommendation of complete resection as the main treatment method. At present, although laparoscopic surgery has a clearer field of view than open surgery, its exposure is relatively poor during liver surgery, especially when the lesion is located in the right posterior lobe of the liver. Hydatid lesions are usually located in the right lobe of the liver, and the lesions are large in size. Its expansive growth pattern exacerbates the difficulty of exposing the surgical field of view. Therefore, during laparoscopic resection, decompression of the hydatid cyst becomes the preferred method of operation. Decompression of the hydatid cyst is crucial to ensure the complete resection of hydatid cysts under laparoscopy.

[0004] Existing studies have shown that the postoperative hospital stay of patients undergoing laparoscopic surgery is shorter than that of the open surgery group, and patients in the laparoscopic group recover faster after surgery. Laparoscopic surgery has the advantages of less bleeding and faster postoperative recovery. After strictly mastering the surgical indications, laparoscopic treatment of hepatic cystic echinococcosis is safe and effective. With the rapid development of laparoscopic technology, laparoscopic minimally invasive surgery has been used to treat hepatic cystic echinococcosis. Internal capsule removal under direct laparoscope can effectively improve surgical efficiency, reduce complications such as postoperative bleeding, bile leakage, and recurrence, and has the advantages of good efficacy, less trauma, and faster recovery. At present, the patent designs of special instruments for cysticercosis surgery in China include: the multifunctional puncture needle for cysticercosis CN201147352Y, and the suction and cutting device for cysticercosis (application number 200820062052.1). The former is a surgical instrument for pulmonary cysticercosis, which treats lesions through the suction device on the outer sleeve and lacks a cutting component. The latter is connected to the suction tube by pressing the pressure column on the handle, and the cyst is sucked out under the action of the negative pressure bottle and the negative pressure tube. The large cyst can be directly cut and sucked out by the sharp surface of the suction tube, and its pipeline channel is relatively complicated.

[0005] It can be seen that in the minimally invasive surgery for the treatment of hepatic cystic echinococcosis, developing a special instrument to assist the surgery will improve the efficiency of the surgery, reduce the operation time, and reduce the pain of the patient, which is the work that technicians in this field pay attention to. Summary of the invention

[0006] According to the problems mentioned in the background technology, in a first aspect, the present invention provides a device for crushing and aspirating the cysts of hepatic cystic echinococcosis to assist physicians in treating hepatic cystic echinococcosis.

[0007] The hepatocystic echinococcosis internal cyst crushing and suction device comprises an outer catheter 1, an inner catheter 2, a front handle 3, a rear handle 4, a connecting rod 5 and a spring 6; wherein: the inner catheter 2 has two ends that are open tubular bodies, and its left end is connected to a negative pressure device, the outer catheter 1 is a tubular body with a closed right end and an open left end, and a first slot hole is provided on the right side surface of the outer catheter 1, and a second slot hole is provided on the left side surface; the inner catheter 2 is inserted into the outer catheter 1 to form a catheter part, a retaining ring is fixed on the left outer wall of the inner catheter 2, and the inner catheter 2 can slide in the outer catheter 1; the right part of the inner catheter 2 is a sharp inner blade, and the right side of the first slot hole where the right part of the outer catheter 1 is located is a sharp outer blade The inner blade and the outer blade cooperate with each other to form a cutting part; the upper part of the front handle 3 is hinged to the near left end of the second slot of the outer catheter 1 through the outer catheter connecting shaft pin 9, and the middle part of the right side of the front handle 3 is hinged to the lower end of the connecting rod 5 through the front handle connecting shaft pin 7, and the upper end of the connecting rod 5 is hinged to the inner catheter 2 through the inner catheter connecting shaft pin 8, and moves left and right along the second slot; the rear handle 4 is fixedly sleeved on the left side of the outer catheter 1; the spring 6 is installed between the retaining ring and the left end of the outer catheter 1. When it is not subject to force, the right part of the inner catheter 2 is against the inner wall of the right part of the outer catheter 1, and the upper end of the connecting rod 5 is against the right end of the second slot; the front handle 3, the rear handle 4 and the connecting rod 5 form a control handle part.

[0008] Preferably, the angle of the sharp portion of the inner blade is between -45° and +45°, and the angle of the sharp portion of the outer blade is between -45° and +45°.

[0009] Furthermore, the angle of the sharp portion of the inner blade is 42.7°, and the angle of the sharp portion of the outer blade is 27.349°.

[0010] Further: The front handle 3 and the rear handle 4 are located in the same plane.

[0011] The first slot hole and the second slot hole are arranged opposite to each other, the first slot hole faces upward, and the second slot hole faces downward.

[0012] The first slot is a quarter arc slot divided by a middle vertical line, and the second slot is a key slot. The vertical plane where the arc slot is located forms a cutting plane with the right end of the inner conduit 2.

[0013] The outer catheter 1 and the inner catheter 2 are hollow cylindrical, and there is a very small gap between the inner catheter 2 and the outer catheter 1, and the gap is preferably 0.006 mm.

[0014] The right end of the outer conduit 1 is an arc surface.

[0015] A through hole for fingers to pass through is provided on the lower side of the front handle 3 .

[0016] The outer catheter 1 is movably connected to the negative pressure device through the catheter, and the front handle 3, the rear handle 4, and the rod connection 5 are movably connected through the front handle connecting shaft pin 7, the inner catheter connecting shaft pin 8, and the outer catheter connecting shaft pin 9.

[0017] In a second aspect, the operation method of the device for crushing and aspirating the cyst of hepatic cystic echinococcosis is as follows: S1. Preparation: Check whether the device for crushing and aspirating the cysts of hepatic cystic echinococcosis is normal, clean and disinfect it; S2. Intraoperative use: Hold the front handle 3 and the rear handle 4 to extend the outer catheter 1 into the outer cyst of the cystic echinococcosis of the liver to contact the inner cyst, and adjust the surgical position; S3, crushing and cutting the inner capsule of the affected part: gradually tighten the front handle 3, and the inner catheter 2 slides relatively along the inner side of the outer catheter 1 until the first slot is open; make the inner capsule of the affected part at the first slot, slowly release the front handle 3, and the inner catheter 2 slides relatively in the opposite direction along the inner side of the outer catheter 1, and the inner capsule of the affected part is crushed at the first slot. When the front handle 3 is in the restored state, the cutting surface formed by the right end of the inner catheter 2 and the vertical surface where the arc-shaped slot is located cuts the inner capsule of the affected part, and then the inner capsule of the affected part is cut into the inner catheter 2; S4, suction: use a negative pressure device to suck out the affected inner capsule in the inner catheter 2.

[0018] Beneficial effects of the present invention: (1) The catheter in this device is controlled by a front handle connecting rod, which is stable and accurate.

[0019] (2) The blade (i.e., the first slot) of the device is normally closed, and the front handle is normally open. The spring assists the front handle in opening and closing.

[0020] (3) This device integrates the suction and cutting functions to simplify the surgical steps and ensures a clear surgical field of view by performing suction during the cutting process.

[0021] (4) This device is a purely mechanical structure with simple operation, low cost and easy promotion. The connecting rod structure is simple and reliable, and the spring ensures that the device has no dead point.

[0022] (5) The device is safe to use and easy to operate. It plays a certain role in preventing cystic echinococcosis and can also be used for open abdominal cysticercosis surgery and other surgical operations requiring cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 : Schematic diagram of the structure of the device for crushing and aspirating the cyst of hepatic cystic echinococcosis; Figure 2 : Schematic diagram of the inner catheter and spring; Figure 3 : Schematic diagram of the outer catheter and rear handle; Figure 4 : Schematic diagram of the front handle; Figure 5 : Schematic diagram of the connecting rod; Figure 6 : Schematic diagram of the arc-shaped slot of the outer catheter; Figure 7 : Schematic diagram of the right end of the inner catheter; Figure 8 : Schematic diagram of the structure where the inner catheter is connected to the negative pressure device end and the spring; Fig. 9 : Schematic diagram of the cutting effect; In the figure: outer catheter 1, inner catheter 2, front handle 3, rear handle 4, connecting rod 5, spring 6, front handle connecting shaft pin 7, inner catheter connecting shaft pin 8, outer catheter connecting shaft pin 9. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please see attached Figure 1-7 The technical scheme of the device for crushing and sucking out the internal cyst of hepatic cystic echinococcosis of the present invention is as follows.

[0027] Embodiment 1: The device for crushing and sucking out the internal cyst of hepatic cystic cysts comprises an outer catheter 1, an inner catheter 2, a front handle 3, a rear handle 4, a connecting rod 5 and a spring 6; wherein: the two ends of the inner catheter 2 are open tubular bodies, and the left end thereof is connected to a negative pressure device, the outer catheter 1 is a tubular body with a closed right end and an open left end, and a first slot hole is provided on the right side surface of the outer catheter 1, and a second slot hole is provided on the left side surface; the inner catheter 2 is inserted into the outer catheter 1 to form a catheter part, a retaining ring is fixed on the left outer wall of the inner catheter 2, and the inner catheter 2 can slide in the outer catheter 1; the right part of the inner catheter 2 is sharp, and the first slot where the right part of the outer catheter 1 is located The hole forms a cutting part; the upper part of the front handle 3 is hinged to the near left end of the second slot of the outer catheter 1 through the outer catheter connecting shaft pin 9, the middle part of the right side of the front handle 3 is hinged to the lower end of the connecting rod 5 through the front handle connecting shaft pin 7, the upper end of the connecting rod 5 is hinged to the inner catheter 2 through the inner catheter connecting shaft pin 8, and moves left and right along the second slot; the rear handle 4 is fixedly sleeved on the left side of the outer catheter 1; the spring 6 is installed between the retaining ring and the left end of the outer catheter 1. When it is not under force, the right part of the inner catheter 2 presses on the inner wall of the right part of the outer catheter 1, and the upper end of the connecting rod 5 presses on the right end of the second slot; the front handle 3, the rear handle 4 and the connecting rod 5 form a control handle part. Among them, the right part of the inner catheter 2 is a sharp inner blade, and the right side of the first slot where the right part of the outer catheter 1 is located is a sharp outer blade.

[0028] As a preferred embodiment of the above embodiment, the angle of the sharp part of the inner blade is between -45° and +45°, and the angle of the sharp part of the outer blade is between -45° and +45°.

[0029] As a preferred structure of embodiment 1, the relevant embodiments of the present invention are as follows: The front handle 3 and the rear handle 4 are located in the same plane, which is convenient for the surgeon to hold.

[0030] The first slot hole and the second slot hole are arranged opposite to each other, with the first slot hole facing upward and the second slot hole facing downward, which is convenient for the surgeon to hold and observe.

[0031] The first slot is a quarter arc slot divided by a middle vertical line, and the second slot is a key slot. The vertical plane where the arc slot is located forms a cutting plane with the right end of the inner catheter 2, which is conducive to the cutting and crushing of the cysts.

[0032] The outer catheter 1 and the inner catheter 2 are hollow cylindrical to prevent the edges of other structures from scratching the affected area during surgery, and there is a very small gap between the inner catheter 2 and the outer catheter 1 to prevent the accumulated fluid in the affected area from overflowing there, and the gap value is at least less than 1 mm.

[0033] The right end of the outer catheter 1 is an arc surface, which is conducive to smoothly entering the hydatid cyst during surgery.

[0034] A through hole for fingers to pass through is provided on the lower side of the front handle 3 .

[0035] The outer catheter 1 is movably connected to the negative pressure device through the catheter, and the front handle 3, the rear handle 4, and the rod connection 5 are movably connected through the front handle connecting shaft pin 7, the inner catheter connecting shaft pin 8, and the outer catheter connecting shaft pin 9. Each component can be easily disassembled, which is convenient for cleaning, washing, sterilization and disinfection of the surgical device.

[0036] Working principle: the surgeon controls the device through the control handle part and goes deep into the affected area, inserts the outer catheter 1 into the outer cyst of the cystic echinococcosis of the hepatic cystic echinococcosis to contact the inner cyst, so as to adjust the surgical position; slowly grips the front handle 3, and it rotates clockwise along the shaft of the outer catheter connecting the axle pin 9, driving the connecting rod 5 to follow, thereby driving the inner catheter 2 to slide leftward along the outer catheter 1, and the right end of the inner catheter 2 moves to the left end of the first slot, and the first slot is in an open state, at this time the spring 6 is in a stressed state; the negative pressure device is used to attract the inner capsule of the affected area to the space in the first slot, and the surgeon relaxes his hand, then after the spring 6 loses the force, the right end of the inner catheter 2 cuts off the inner capsule of the affected area on the semicircular straight surface of the first slot, and when the right end of the inner catheter 2 presses against the inner wall of the right part of the outer catheter 1, the first slot is closed, and then the cut inner capsule of the affected area is taken out along the inner catheter 2 under the suction of the negative pressure device.

[0037] The sizes of the cysts of hepatic cystic echinococcosis vary and are occasionally viscous, so it is necessary to perform multiple reciprocating cuts on the cysts, that is, repeatedly crushing the cysts at the first slot to a size that can be accommodated by the inner diameter of the inner catheter 2, and then gradually aspirating the cyst wall of the cysts. At the same time, during the cutting, the negative pressure device connected to the inner catheter 2 will simultaneously aspirate the cyst fluid of the cysts of hepatic cystic echinococcosis.

[0038] The present invention provides a simplified hydatid cyst crushing and suction device, which integrates the cyst cutting and cyst fluid suction functions into a single device, eliminating the need to change devices during surgery. The device can generate negative pressure while performing the cutting operation, effectively simplifying the surgical steps, shortening the operation time, and alleviating the patient's pain. In addition, by optimizing the device structure, the cost is significantly reduced, increasing its value in clinical applications.

[0039] The inner catheter 2 slides in the outer catheter 1. With the cooperation of the circular cutting edge formed at the first slot, the inner catheter 2 has a certain margin after sliding to the circular cutting edge of the outer catheter 1, thereby adapting to the situation where the sizes of the internal cysts of hepatocystic echinococcosis are different, and the internal cysts of hepatocystic echinococcosis can be cut more thoroughly.

[0040] When the inner catheter 2 is not connected to the negative pressure device, the device of the present invention is a simple laparoscopic tissue fragmentation device, which is suitable for tissue cutting required for surgeries at different parts of the body.

[0041] When using the device of the present invention, pay attention to the following: When the inner catheter moves, the outer catheter is stationary and moves relative to it, and then the blade at the opening cuts the cyst of hepatic cystic echinococcosis. During the operation, the doctor needs to adjust the number of cuts according to the size and viscosity of the cyst, and cut and break the cyst to a size smaller than the inner diameter of the inner catheter to facilitate suction.

[0042] The opening of the outer catheter is the first slot, which should be aligned with the inner cyst of hepatic cystic echinococcosis during cutting, forming a cutting edge with the sharp part of the right side of the inner catheter, that is, the two cutting positions are processed into acute angles, and the joint surface of the two is a plane; and the cutting edge of the inner catheter is circular.

[0043] The inner catheter is chamfered at the connection with the negative pressure device, so as to facilitate the connection with the negative pressure device during surgery to provide negative pressure for the device. After the front handle is gripped, the inner catheter slides, and the incision is opened to aspirate the cystic fluid of the cystic echinococcosis of the liver.

[0044] The spring is used to ensure that the blade remains in a normally closed state, and suction will only be performed when it is opened. Combining the suction action with the shearing action saves some operations, and suction during shearing provides a good surgical field of view. Before surgery, it should be noted that it is in a normal and usable state.

[0045] Since the cutting effect is an important indicator for measuring the device, it affects the safety and efficiency of the operation, so the cutting effect should be as good as possible. Therefore, the tool edge parameters are the main factors affecting the cutting effect. When the tool is determined, different tool edge parameters will have a great impact on the cutting effect. Therefore, the workpiece edge parameters are correlated with the cutting effect.

[0046] In terms of the angle selection of the sharp parts of the inner and outer blades, the inventors conducted the following verification and designed a Box-Behnken test to analyze it. The experiment is shown in Table 1: Table 1 Test results Serial number External cutting angle / ° Inner cutting angle / ° Tool gap / mm Maximum equivalent stress / MPa 1 45 -45 0.5 0.065342 2 45 0 1 0.091747 3 0 -45 1 0.19345 4 0 -45 0 0.14311 5 45 0 0 0.098154 6 0 45 1 0.054174 7 -45 45 0.5 0.18232 8 0 45 0 0.2424 9 0 0 0.5 0.18377 10 0 0 0.5 0.11612 11 45 45 0.5 0.2026 12 -45 0 1 0.22885 13 -45 -45 0.5 0.18164 14 -45 0 0 0.15722 15 0 0 0.5 0.18995 16 0 0 0.5 0.1599 17 0 0 0.5 0.20054 The simulation data were analyzed by response surface regression using Design-Expert software, and the fitting equation between each influencing factor and the evaluation index was obtained by calculation, as shown in Formula 1: Y = 0.1583 − 0.0365A + 0.0122B −0.0091C + 0.0341AB −0.0195AC − 0.0596BC (Formula 1) Among them: A, B, C are factor coding values.

[0047] In order to ensure the validity of the fitting equation, the experimental results were subjected to regression equation variance analysis. The P value of the rigid-flexible coupling model of the device cutting action is less than 0.01, indicating that the regression equation is extremely significant, and the P value of the lack-of-fit term is greater than 0.05, indicating that the lack-of-fit term is not significant, indicating that the regression model has a good degree of fit and can be used to analyze the impact of various experimental factors on the evaluation indicators, see Table 2: Table 2 Analysis of variance of regression equation Sources of variance sum of squares Degrees of Freedom Mean Square F p Model 0.0329 6 0.0055 3.35 0.0447 A-Outer Angle 0.0107 1 0.0107 6.51 0.0288 B-Inner Angle 0.0012 1 0.0012 0.7312 0.4125 C-Tool Gap 0.0007 1 0.0007 0.4024 0.5401 AB 0.0047 1 0.0047 2.84 0.1227 AC 0.0015 1 0.0015 0.9281 0.3581 BC 0.0142 1 0.0142 8.67 0.0147 Residual 0.0164 10 0.0016 Lack of Fit 0.0119 6 0.002 1.75 0.3061 Pure Error 0.0045 4 0.0011 Total error 0.0493 16 In order to obtain the optimal working parameter combination of the blade of the hydatid cyst cutting device, the Design-Expert software was used to solve the constraint target of the regression model and optimize the simulation results. The optimization results are shown in Table 3.

[0048] Table 3 Simulation optimization prediction results External cutting angle / ° Inner cutting angle / ° Tool gap / mm Maximum equivalent stress / MPa 27.349 42.7 0.006 0.244 The best cutting effect of hydatid cyst can be achieved by using the cutting inclination angle values ​​in Table 3. Fig. 9 The tool gap should ensure the smooth movement of the inner and outer catheters and avoid the overflow of the accumulated fluid. This value has a good effect.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for crushing and sucking out the cysts of hepatic cystic echinococcosis, characterized in that: The invention comprises an outer catheter (1), an inner catheter (2), a front handle (3), a rear handle (4), a connecting rod (5) and a spring (6); wherein: the inner catheter (2) is a tubular body with both ends being open, and the left end thereof is connected to a negative pressure device; the outer catheter (1) is a tubular body with a closed right end and an open left end, a first slot hole being provided on the right side surface thereof, and a second slot hole being provided on the left side surface thereof; the inner catheter (2) is inserted into the outer catheter (1) to form a catheter portion, a retaining ring is fixed on the left outer circumferential surface of the inner catheter (2), and the inner catheter (2) is slidable in the outer catheter (1); the right end of the inner catheter (2) is processed into a sharp inner blade, and the right side of the first slot hole is processed into a sharp outer blade, so that the inner blade and the outer blade form a cutting portion; The upper part of the front handle (3) is hinged to the near left end of the second slot of the outer catheter (1) through the outer catheter connecting shaft pin (9), and the middle part of the right side of the front handle (3) is hinged to the lower end of the connecting rod (5) through the front handle connecting shaft pin (7); the upper end of the connecting rod (5) is hinged to the inner catheter (2) through the inner catheter connecting shaft pin (8), and moves left and right along the second slot; the rear handle (4) is fixedly sleeved on the left side of the outer catheter (1); the spring (6) is installed between the retaining ring and the left end of the outer catheter (1), and when it is not subjected to force, the right part of the inner catheter (2) presses against the inner wall of the right part of the outer catheter (1), and the upper end of the connecting rod (5) presses against the right end of the second slot; the front handle (3), the rear handle (4) and the connecting rod (5) form a control handle part.

2. A device for crushing and sucking out the internal cysts of hepatic cystic echinococcosis according to claim 1, characterized in that: The angle of the inner sharp-shaped portion of the blade is between -45° and +45°, and the angle of the outer sharp-shaped portion of the blade is between -45° and +45°.

3. A device for crushing and sucking out the cysts of hepatic cystic echinococcosis according to claim 2, characterized in that: The angle of the sharp part of the inner blade is 42.7°, and the angle of the sharp part of the outer blade is 27.349°.

4. The device for crushing and sucking out the cyst of hepatic cystic echinococcosis according to claim 1, characterized in that: The front handle (3) and the rear handle (4) are located in the same plane; the first slot hole and the second slot hole are arranged opposite to each other, the first slot hole faces upwards, and the second slot hole faces downwards.

5. The device for crushing and sucking out the cyst of hepatic cystic echinococcosis according to claim 1, characterized in that: The first slot is a quarter arc-shaped slot divided by a middle vertical line, the second slot is a key slot, and the vertical plane where the arc-shaped slot is located forms a cutting plane with the right end of the inner conduit (3).

6. The device for crushing and sucking out the internal cyst of hepatic cystic echinococcosis according to claim 3, characterized in that: The outer conduit (1) and the inner conduit (2) are hollow cylindrical, and the gap between the inner conduit (2) and the outer conduit (1) is 0.006 mm.

7. The device for crushing and sucking out the internal cyst of hepatic cystic echinococcosis according to claim 1, characterized in that: The right end of the outer conduit (1) is an arc surface.

8. The device for crushing and sucking out the internal cyst of hepatic cystic echinococcosis according to claim 1, characterized in that: A through hole for fingers to pass through is provided on the lower side of the front handle (3).

9. The device for crushing and sucking out the internal cyst of hepatic cystic echinococcosis according to claim 1, characterized in that: The outer catheter (1) is movably connected to the negative pressure device via the catheter, and the front handle (3), the rear handle (4), and the rod connection (5) are movably connected via the front handle connecting shaft pin (7), the inner catheter connecting shaft pin (8), and the outer catheter connecting shaft pin (9).

10. An operating method of a device for crushing and aspirating the internal cysts of hepatic cystic echinococcosis, characterized in that: S1. Preparation: Check whether the device for crushing and aspirating the cysts of hepatic cystic echinococcosis is normal, clean and disinfect it; S2. Intraoperative use: holding the front handle (3) and the rear handle (4), the outer catheter (1) is inserted into the outer cyst of the hydatid cyst of hepatic cystic echinococcosis to contact the inner cyst, and the surgical position is adjusted; S3, crushing and cutting the inner capsule of the affected part: gradually tighten the front handle (3), so that the inner catheter (2) slides relatively along the inner side of the outer catheter (1) until the first slot hole is in an open state; the inner capsule of the affected part is located at the first slot hole, and the front handle (3) is slowly released, so that the inner catheter (2) slides relatively in the opposite direction along the inner side of the outer catheter (1), and the inner capsule of the affected part is crushed at the first slot hole. When the front handle (3) is in a restored state, the cutting surface formed by the right end of the inner catheter (2) and the vertical surface where the arc-shaped slot hole is located cuts the inner capsule of the affected part, and then the inner capsule of the affected part is cut into the inner catheter (2); S4, suction: use a negative pressure device to suck out the affected internal capsule in the inner catheter (2).

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