Leakage-proof puncture suction catheter for cyst stripping

Abstract

The utility model relates to a cyst stripping leakproof puncture suction catheter, which comprises an outer sleeve, a puncture tube and an expansion piece operation tube, the puncture tube is hermetically sleeved in the outer sleeve through a sealing component, the front end side of the outer sleeve is provided with an abutting hole, and one side of the rear end of the outer sleeve, which is close to the sealing component, is provided with a first negative pressure hole; a puncture hole is formed in the front end of the puncture tube, a second negative pressure hole is formed in the rear end of the puncture tube, and an expansion piece is installed on the side, close to the front end, of the puncture tube. The expansion piece operation tube is fixedly arranged in the puncture tube in a sleeved mode and connected with the expansion piece. By means of the cyst stripping catheter, substances in the cyst can be effectively prevented from overflowing through the expansion piece operation tube and the corresponding using method, and therefore effective cyst stripping operation treatment is conducted on a patient.

Description

Technical Field

[0001] The invention relates to the technical field of cyst stripping surgery, in particular to a cyst stripping leak-proof puncture and suction catheter. Background Art

[0002] Chocolate cysts and ovarian cysts are common in obstetrics and gynecology. Traditional cyst dissection involves clamping or blunt dissection under laparotomy or laparoscopy. Because cysts are often accompanied by adhesions to surrounding tissues, traditional dissection often results in cyst rupture, disseminating cyst contents into the abdominal cavity and leading to adverse outcomes. Summary of the Invention

[0003] The purpose of the present invention is to provide a cyst stripping and leak-proof puncture and aspiration catheter to solve the problems encountered in the above-mentioned background technology.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] A cyst dissection leak-proof puncture and suction catheter and a method of using the same, comprising an outer sleeve, a puncture tube and an expansion member operating tube, wherein the puncture tube is sealed and sleeved inside the outer sleeve through a sealing component, a supporting hole is provided on the front end side of the outer sleeve, and a first negative pressure hole is provided on the rear end of the outer sleeve close to the sealing component; a puncture hole is provided on the front end of the puncture tube, a second negative pressure hole is provided on the rear end of the puncture tube, and an expansion member is installed on the side of the puncture tube close to the front end; the expansion member operating tube is fixedly sleeved inside the puncture tube and connected to the expansion member.

[0006] In the above solution, an elastic member is installed on one side of the sealing assembly, the end of the elastic member is fixedly connected to the puncture tube, the outer diameter of the puncture tube is smaller than the inner diameter of the outer sleeve, and the puncture tube moves elastically in the outer sleeve through the elastic member.

[0007] In practice, the elastic member is disposed on the outside of the sealing assembly, away from the outer sleeve and not surrounded by the outer sleeve, and is therefore located on the outside. Alternatively, the elastic member may be disposed on the inside of the sealing assembly, between the outer sleeve and the puncture tube, and is therefore located on the inside.

[0008] The sealing assembly includes a sealing seat and an elastic member base, the sealing seat is fixedly connected to the elastic member base, the end of the outer sleeve is sealed with the puncture tube through the sealing seat, and the elastic member is installed on the elastic member base.

[0009] As a preferred solution, both sides of the inner wall of the expansion member are fixedly connected to the puncture tube via adhesive portions, and one end of the expansion member operating tube passes through the puncture tube and then extends into the expansion member.

[0010] Furthermore, in the above scheme, a first through hole is provided on the outer wall at the rear end of the puncture tube, and a second through hole is provided at the front end of the puncture tube at a position inside the expansion member. The operating end of the expansion member operating tube enters the puncture tube through the first through hole, and the working end of the expansion member operating tube extends into the expansion member through the second through hole.

[0011] During implementation, no matter the elastic member is arranged on the outside or inside of the sealing assembly, a fixing ring is fixed on the inner wall of the outer sleeve, and a gear ring is fixed on the outer wall of the puncture tube. The inner diameter of the fixing ring is larger than the outer diameter of the gear ring. At least one convex tooth is provided on the outside of the gear ring. A guide groove is provided on the inner diameter of the fixing ring to accommodate the smooth passage of the convex tooth, and a concave tooth is provided on the outlet side of the guide groove to clamp the convex tooth.

[0012] A method for using a cyst stripping and leak-proof puncture and suction catheter comprises the following steps:

[0013] S1. During cyst dissection surgery, after the outer cannula is aligned with the cyst, the abutment hole is used to abut the outer surface of the cyst. The first negative pressure hole at the rear end of the outer cannula transmits negative pressure to the front end, sucking the cyst to prevent the cyst contents from flowing out during the next puncture.

[0014] S2. The puncture tube in the outer cannula is used to puncture the cyst wall within the surface of the sucked cyst. The expansion member is then inflated using the expansion member operating tube, so that the sealing assembly and the front end of the outer cannula jointly fix and seal the punctured cyst wall portion. At this point, the punctured portion of the cyst wall is fixed between the outer cannula and the expansion member.

[0015] S3. Use the second negative pressure hole at the rear end of the puncture tube to perform negative pressure suction on the cyst to ensure that there is less liquid in the cyst and then pull it out of the body.

[0016] As a preferred solution, in step S3, the second negative pressure hole at the rear end of the puncture tube is used to irrigate and flush the cyst to dilute the cyst contents, and then suction is performed.

[0017] Furthermore, in the above solution, the method is performed under laparoscope.

[0018] Compared with the prior art, the present invention has the following advantages: when puncturing the outer wall of a cyst, the first negative pressure hole first holds the cyst in place to prevent spillage of the contents. The puncture is then completed, and negative pressure is applied to the cyst contents through the second negative pressure hole. The puncture hole is then closed with an expansion member. This cyst dissection catheter and its corresponding method of use effectively prevent spillage of cyst contents, thereby providing effective cyst dissection treatment for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure in half section along the central axis;

[0022] Figure 3 for Figure 2 A magnified view of the posterior end structure of the Nakamoto cyst dissection catheter;

[0023] Figure 4 for Figure 2 A magnified view of the front end structure of the Nakamoto cyst dissection catheter;

[0024] Figure 5 is a schematic diagram of the overall structure of another embodiment of the present invention;

[0025] Figure 6 for Figure 5 A magnified view of the posterior end structure of the Nakamoto cyst dissection catheter;

[0026] Figure 7 for Figure 5 A magnified view of the front end structure of the Nakamoto cyst dissection catheter;

[0027] Figure 8 This is a schematic diagram of the structure before the piercing action occurs in one embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of one embodiment of the present invention after the piercing action is completed;

[0029] Figure 10 Schematic diagram of the structure of the fixed ring and the gear ring in the present invention;

[0030] Figure 11 It is a schematic diagram of the structure of the fixing ring and the gear ring after the piercing action occurs in the present invention.

[0031] Numbers in the figure: 1-outer sleeve; 11-first negative pressure hole; 12-fixing ring; 13-guide groove; 14-concave tooth; 15-conical surface; 2-puncture tube; 20-protective cover; 21-sealing assembly; 22-sealing seat; 221-upper sealing seat; 222-lower sealing seat; 23-elastic member base; 231-upper elastic member base; 232-lower elastic member base; 24-first through hole; 25-elastic member; 26-second through hole; 27-second negative pressure hole; 28-gear ring; 29-convex tooth; 3-expansion member operating tube; 31-expansion member; 32-adhesion part. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention will now be further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the relevant components of the present invention.

[0033] According to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art may propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are merely illustrative of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0034] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Example 1, as Figures 1 to 4 As shown, a leak-proof puncture and aspiration catheter for cyst dissection includes an outer cannula 1, a puncture tube 2, and an expansion member operating tube 3. The outer cannula 1 is a stainless steel tube with an outer diameter of 10 mm and an inner diameter of 9.5 mm, while the puncture tube 2 is a stainless steel tube with an outer diameter of 6 mm and an inner diameter of 5.5 mm. The expansion member operating tube 3 is a plastic tube with an outer diameter of 2.5 mm and an inner diameter of 2 mm, and can also be a telescopic structure similar to an umbrella skeleton.

[0036] The puncture tube 2 is sealed within the outer cannula 1 via a sealing assembly 21. The puncture tube 2 can move back and forth within the outer cannula 1 to perform the puncture. The outer cannula 1 has a contact hole at its front end for contact with the outer surface of the cyst. A first negative pressure hole 11 is provided at its rear end, near the sealing assembly 21, for connection to a negative pressure source to apply suction to the outer surface of the cyst during operation.

[0037] The front end of the puncture tube 2 is provided with a sharp-edged puncture hole. The rear end of the puncture tube 2 is provided with a second negative pressure hole 27, which is connected to a negative pressure source during operation to aspirate the cyst contents. An expansion member 31 is mounted near the front end of the puncture tube 2 to block or clog the punctured wound during operation.

[0038] When the expansion member operating tube 3 is a trachea with a certain inner and outer diameter, the expansion member 31 is a balloon. In this case, the expansion member operating tube 3 is connected to an air pump. The expansion member operating tube 3 is fixedly mounted inside the puncture tube 2 and connected to the expansion member 31 to inflate the expansion member 31, causing the expansion member 31 to inflate and act on the wall of the puncture hole of the cyst. When the expansion member operating tube 3 is a skeleton telescopic structure similar to an umbrella, the expansion member 31 is an umbrella-shaped support structure. In this case, the umbrella-shaped expansion member 31 can be opened by pushing and act on the wall of the puncture hole of the cyst. During implementation, a balloon is preferably used as the expansion member 31.

[0039] In the above scheme, during implementation, an elastic member 25 is installed on one side of the sealing assembly 21. The elastic member 25 can be a spring with a reset function or a silicone rubber with a high rebound function, preferably a spring. The end of the elastic member 25 is fixedly connected to the puncture tube 2. The outer diameter of the puncture tube 2 is smaller than the inner diameter of the outer tube 1. The puncture tube 2 elastically moves within the outer tube 1 via the elastic member 25. Under normal circumstances, due to the elasticity of the elastic member, the front end of the puncture tube 2 is located within the outer tube 1. During operation, the function of the spring is to expand the balloon after the puncture tube 2 is pushed out. Using the retractive force of the spring, the balloon fixes the punctured cyst wall area to the outer tube 1 outside the cyst wall. After completing all surgical operations, the balloon is deflated, and the puncture tube 2 can rebound into the outer tube 1. During implementation, the length of the spring can be compressed to 30-50mm.

[0040] During implementation, the elastic member 25 is arranged outside the sealing assembly 21 and is away from the outer sleeve 1 and is not surrounded by the outer sleeve 1, so it is located on the outside. In order to protect the elastic member 25, a protective cover 20 can be installed to wrap the elastic member 25 together with the sealing assembly 21. The entire elastic movement is telescopic in the protective cover 20, which prevents the elastic member 25 from being corroded and is also convenient for hand-held pushing to implement the piercing action. Figure 3 As shown, the elastic member 25 is a spring, which can be a cylindrical spring or a conical cylindrical spring. The bottom end of the spring is fixed to the sealing assembly 21, and the head end of the spring is fixed to the puncture tube 2. By holding the puncture tube 2 and utilizing the rebound force of the spring, the puncture tube 2 can be telescopically moved, and the pointed end of the puncture tube 2 can pierce the cyst wall.

[0041] In addition, during implementation, it can also be designed like this: the sealing assembly 21 includes an upper sealing seat 221, a lower sealing seat 222, a protective cover 20, an upper elastic member base 231 and a lower elastic member base 232. The upper elastic member base 231 is fixed to the outside of the puncture tube 2, away from the outer sleeve 1, and the upper sealing seat 221 is wrapped around the outside; the lower elastic member base 232 is fixed to the end of the outer sleeve close to the first negative pressure hole 11, and the lower sealing seat 222 is wrapped around the outside; the space formed by the upper elastic member base 231 and the lower elastic member base 232 allows the elastic member 25 to move up and down; the upper sealing seat 221, the lower sealing seat 222 and the protective cover 20 together form a sealed space, which ensures that the outer sleeve 1 sucks the contents of the front end sac wall through the vacuum formed by the outer sleeve abutment hole and the first negative pressure hole 11.

[0042] Example 2, please refer to Figure 5 and Figure 6 , it can also be arranged like this, the elastic member 25 is arranged on the inner side of the sealing component 21, and it is located between the outer sleeve 1 and the puncture tube 2, so it is located on the inner side. In specific implementation, the elastic member 25 is a spring, which can be a cylindrical spring or a conical cylinder spring. There are two installation methods: the first is that the bottom end of the spring is fixed to the sealing component 21, and the head end of the spring is fixed to the puncture tube 2. By holding the puncture tube 2, the spring's rebound force can be used to perform telescopic movement, and then the pointed end of the puncture tube 2 can pierce the cyst wall. The second is that the bottom end of the spring is fixed to the inner wall of the outer sleeve 1, and the head end of the spring is fixed to the outer wall of the puncture tube 2. By holding the puncture tube 2, the spring's rebound force can be used to perform telescopic movement, and then the pointed end of the puncture tube 2 can pierce the cyst wall.

[0043] In this embodiment, although the installation position of the elastic member 25 is different from that in embodiment 1, both structures can be retracted as needed and the usage method is the same. It is just that the elastic directions of the two are the same or opposite, so in Figure 3 In the structure shown, the puncture tube 2 pierces the outer wall of the cyst by compressing the elastic member 25 through forward movement, and Figure 6 In the embodiment, a conical spring is used, and the spring base is on one side of the sealing assembly 21. When working, the puncture tube 2 is first pulled back and tightened, at which time the elastic member 25 is compressed, and then the puncture tube 2 is released. The elastic member 25 is reset and passes through the outer wall of the cyst. Figure 6 The conical tube spring used in the invention is the opposite of this, with the spring head end on one side of the sealing component 21, which can pierce the cyst when compressed, guide out the contents, and return to its original position when reset.

[0044] Example 3, based on the solution of Example 1, during implementation, the sealing assembly 21 includes a sealing seat 22 and an elastic member base 23, the sealing seat 22 is fixedly connected to the elastic member base 23, the end of the outer sleeve 1 is sealed with the puncture tube 2 through the sealing seat 22, and the elastic member 25 is installed on the elastic member base 23. The elastic member 25 can be installed on the outside or inside of the elastic member base 23 as needed, and its ends are fixed to the puncture tube 2 to facilitate compression.

[0045] The elastic member 25 is a spring, which can be a cylindrical spring or a conical cylindrical spring. In the connection in Examples 1 and 2, the bottom end of the spring is fixed to the elastic member base 23. When the spring is located on the inner side of the elastic member base 23, it can be directly fixed to the elastic member base 23 or fixed to the inner wall of the outer sleeve 1.

[0046] As a preferred solution, please refer to Figure 4 The inner wall of the expansion member 31 is fixedly connected to the puncture tube 2 by adhesive portions 32. The adhesive portions 32 are slot-shaped for easy fixation. One end of the expansion member operating tube 3 passes through the puncture tube 2 and extends into the expansion member 31 to inflate the expansion member 31.

[0047] For further information, see Figure 7 In the above scheme, a first through hole 24 is opened on the outer wall of the rear end of the puncture tube 2, and a second through hole 26 is opened at the front end of the puncture tube 2 located inside the expansion member 31. The operating end of the expansion member operating tube 3 enters the puncture tube 2 through the first through hole 24, and the working end of the expansion member operating tube 3 extends into the expansion member 31 through the second through hole 26.

[0048] In Example 4, regardless of whether the elastic member 25 is arranged on the inner side or the outer side of the sealing assembly 21, in order to fix the puncture process and facilitate the control of medical staff, a fixing ring 12 is fixed on the inner wall of the outer sleeve 1, and a gear ring 28 is fixed on the outer wall of the puncture tube 2. The fixing ring 12 and the gear ring 28 cooperate to fix the puncture tube 2 in the appropriate position of the outer sleeve 1 after the puncture action is completed, so as to drain the cyst contents.

[0049] Specifically, the inner diameter of the retaining ring 12 is larger than the outer diameter of the gear ring 28. The outer side of the gear ring 28 is provided with at least one raised tooth 29, preferably three to four. These teeth 29 can be triangular, semicircular, or bar-shaped. A guide groove 13 is defined on the inner diameter of the retaining ring 12 to accommodate the smooth passage of the raised tooth 29. The inlet of the guide groove 13 preferably adopts an inverted figure-eight structure to provide guidance. A concave tooth 14 is provided at the outlet of the guide groove 13. The shape of the concave tooth 14 matches that of the raised tooth 29 to retain the raised tooth 29 in place.

[0050] As a preferred solution, a conical surface 15 is further provided on the inner diameter of the fixing ring 12, which serves to guide the gear ring 28, and guides the protruding teeth 29 on the gear ring 28 into the guide groove 13, so that the gear ring 28 can pass through the inner diameter of the fixing ring 12 smoothly when puncturing the cyst.

[0051] During operation, the puncture tube 2 is moved forward to puncture the outer wall of the cyst by the action of the elastic member 25. During this process, the toothed ring 28 on the puncture tube 2 passes through the guide groove 13 using the convex teeth 29, so that the toothed ring 28 moves to the other side of the fixing ring 12. After puncturing the cyst wall, the puncture tube 2 is slightly rotated to shift the position of the convex teeth 29. When it reaches the position of the concave teeth 14, it is retained by the fixing ring 12, thereby fixing the puncture tube 2 in the appropriate position on the inner wall of the outer cannula 1. During the surgical operation, there is no need to continuously press the puncture tube, and the position can be accurately fixed to guide the contents of the cyst out.

[0052] Example 5, based on the solutions of Examples 1-3, a method for using a cyst stripping and leak-proof puncture and aspiration catheter comprises the following steps:

[0053] S1. During cyst dissection surgery, after the outer cannula is aligned with the cyst, the abutment hole is used to abut the outer surface of the cyst. The first negative pressure hole at the rear end of the outer cannula is connected to a negative pressure source and transmits negative pressure to the front end, sucking the cyst to prevent the cyst contents from flowing out during the next puncture.

[0054] Under normal circumstances, when the puncture tube has not yet made a puncture action, the outer sleeve, the puncture tube, and the sealing assembly form a sealed space A. The negative pressure hole of the outer sleeve is connected to a negative pressure source to form negative pressure in the sealed space A.

[0055] S2. The puncture tube in the outer cannula is used to puncture the cyst wall within the surface of the absorbed cyst. The expansion element passes through the punctured hole in the outer wall of the cyst. The expansion element is then inflated using the expansion element operating tube, causing the sealing assembly and the front end of the outer cannula to jointly fix and seal the punctured cyst wall portion. At this point, the punctured cyst wall portion is fixed between the outer cannula and the expansion element, and the punctured cyst wall between the sealing assembly and the outer cannula is thus sealed and fixed. Furthermore, under the action of the elastic element, when the elastic element is on the outside, the elastic action pulls the expansion element and presses it against the inside of the cyst wall, thereby sealing the gap between the puncture tube 2 and the cyst wall.

[0056] S3. Use the second negative pressure hole at the rear end of the puncture tube to perform negative pressure suction on the cyst to ensure that there is less liquid in the cyst and then pull it out of the body.

[0057] After the puncture is completed, a sealed space B is formed between the puncture tube, the expansion piece and the punctured cyst. The second negative pressure hole is connected to a negative pressure source, which can form a negative pressure in the above-mentioned sealed space B to suck out the substance in the space B, that is, the contents of the cyst.

[0058] If necessary, the second negative pressure hole can also be filled with substances for convenient suction. Therefore, as a preferred solution, in step S3, the second negative pressure hole at the rear end of the puncture tube is also used to irrigate and flush the cyst to dilute the cyst contents with liquid, and then suction is performed.

[0059] It should also be noted that this method is performed under laparoscopy, allowing for observation of the entire puncture process and determining the timing of negative pressure adsorption. For example, when puncturing the outer wall of a cyst, the first negative pressure hole is used to hold it in place to prevent the contents from spilling out. The puncture is then completed, and negative pressure adsorption of the cyst contents is performed through the second negative pressure hole, with the expansion element used to close the puncture hole.

[0060] The expansion catheter and the method of use can effectively prevent the internal material of the cyst from overflowing, thereby performing effective cyst stripping surgery on the patient.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. These undisclosed elements are all prior art known to those skilled in the art.

[0062] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cyst stripping and leak-proof puncture and suction catheter, characterized by: The invention comprises an outer sleeve (1), a puncture tube (2) and an expansion member operating tube (3); the puncture tube (2) is sealed and sleeved inside the outer sleeve (1) through a sealing component (21); a supporting hole is provided on the front end side of the outer sleeve (1); a first negative pressure hole (11) is provided on the rear end of the outer sleeve (1) close to the sealing component (21); a puncture hole is provided on the front end of the puncture tube (2); a second negative pressure hole (27) is provided on the rear end of the puncture tube (2); an expansion member (31) is installed on the side of the puncture tube (2) close to the front end; the expansion member operating tube (3) is fixedly sleeved inside the puncture tube (2) and connected to the expansion member (31).

2. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 1, characterized in that: An elastic member (25) is installed on one side of the sealing assembly (21), and the end of the elastic member (25) is fixedly connected to the puncture tube (2). The outer diameter of the puncture tube (2) is smaller than the inner diameter of the outer sleeve (1), and the puncture tube (2) moves elastically in the outer sleeve (1) through the elastic member (25).

3. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 2, characterized in that: The elastic member (25) is arranged on the outside of the sealing assembly (21) and is away from the outer sleeve (1).

4. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 2, characterized in that: The elastic member (25) is arranged on the inner side of the sealing assembly (21), and is located between the outer sleeve (1) and the puncture tube (2).

5. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 3 or 4, characterized in that: A fixing ring (12) is fixed on the inner wall of the outer sleeve (1), and a gear ring (28) is fixed on the outer wall of the puncture tube (2). The inner diameter of the fixing ring (12) is larger than the outer diameter of the gear ring (28). At least one convex tooth (29) is provided on the outer side of the gear ring (28). A guide groove (13) is provided on the inner diameter of the fixing ring (12) to accommodate the convex tooth (29) to pass smoothly. A concave tooth (14) is provided on one side of the outlet of the guide groove (13) to clamp the convex tooth (29).

6. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 2, characterized in that: The sealing assembly (21) includes a sealing seat (22) and an elastic member base (23), wherein the sealing seat (22) is fixedly connected to the elastic member base (23), and the end of the outer sleeve (1) is sealedly connected to the puncture tube (2) through the sealing seat (22), and the elastic member (25) is installed on the elastic member base (23).

7. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 2, characterized in that: The sealing assembly (21) comprises an upper sealing seat (221), a lower sealing seat (222), a protective cover (20), an upper elastic member base (231) and a lower elastic member base (232), wherein the upper elastic member base (231) is fixed to the outside of the puncture tube (2) and away from the outer sleeve (1), and externally wraps the upper sealing seat (221); the lower elastic member base (232) is fixed to the end of the outer sleeve close to the first negative pressure hole (11), and externally wraps the lower sealing seat (222); the space formed by the upper elastic member base (231) and the lower elastic member base (232) allows the elastic member (25) to move up and down; the upper sealing seat (221), the lower sealing seat (222) and the protective cover (20) together form a sealed space, which ensures that the outer sleeve (1) can vacuum the contents of the front end sac wall through the outer sleeve abutment hole and the first negative pressure hole (11).

8. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 1, characterized in that: Both sides of the inner wall of the expansion member (31) are fixedly connected to the puncture tube (2) through the adhesive portion (32), and one end of the expansion member operating tube (3) passes through the puncture tube (2) and then extends into the expansion member (31).

9. The cyst stripping and leak-proof puncture and aspiration catheter according to claim 8, characterized in that: A first through hole (24) is provided on the outer wall of the rear end of the puncture tube (2), and a second through hole (26) is provided at the front end of the puncture tube (2) at a position inside the expansion member (31). The operating end of the expansion member operating tube (3) enters the puncture tube (2) through the first through hole (24), and the working end of the expansion member operating tube (3) extends into the expansion member (31) through the second through hole (26).

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