Closed tumor-free drainage device for abdominal tumor

The design of a closed-loop, tumor-free drainage device solves the problem of cystic fluid leakage and dissemination in large cystic-solid masses in the pelvic and abdominal cavities, achieving safe and stable cystic fluid drainage and improving surgical efficiency.

CN121338136APending Publication Date: 2026-01-16SICHUAN CANCER HOSPITAL
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Patent Information

Application Number
CN202511758457.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-27
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

In clinical surgery, the cystic fluid of large cystic-solid/cystic masses in the pelvic and abdominal cavities is difficult to drain effectively, posing a risk of cystic fluid exudation and dissemination, which affects the safety and efficiency of the surgery.

Method used

A closed-loop drainage device without tumors was designed, comprising a protective sleeve, a sealing mechanism, and a limiting mechanism. It utilizes a receiving ring, a sealing ring, an inflation nozzle, and an adhesive layer to achieve sealing and fixation. Combined with a drainage tube and a tightening rope, it ensures the airtightness and stability of the cyst fluid drainage and prevents the cyst fluid from spreading.

Benefits of technology

It effectively prevents the spread of cystic fluid, reduces the size of the mass, facilitates surgical removal, reduces abdominal incisions, and improves surgical safety and patient recovery.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a closed tumor-free drainage apparatus for abdominal tumors, which relates to the field of medical instruments, and comprises a protective sleeve, a sealing mechanism, a limiting mechanism and a sealing mechanism, the protective sleeve is used for protecting when drainage mass cyst fluid is used for reducing the volume of the tumors aiming at the huge tumors (cystic solid / cystic) of the pelvic and abdominal cavities, and the sealing mechanism is used for sealing and attaching the protective sleeve and the tumor cyst wall. The limiting device is arranged at the top of the protective sleeve and used for limiting and controlling the size of an opening in the top of the protective sleeve and sealing the whole protective sleeve after drainage operation is finished to prevent cystic fluid from flowing out to the pelvic cavity; by means of the protective sleeve, a drainage tube can penetrate through the interior of the protective sleeve to drain cyst fluid in the wrapping block in a clinical operation of excising a huge tumor of the pelvic cavity, the protective sleeve can protect drainage of the drainage tube and prevent the cyst fluid from flowing into the pelvic cavity and generating a spreading risk, and after the cyst fluid of the wrapping block is drained, the size of the wrapping block can be reduced, and the size of the wrapping block is reduced. In this way, excision operation can be conveniently conducted on the masses, and the length of an abdominal incision can be shortened during laparotomy.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a sealed tumor-free drainage device for abdominal cavity tumors. BACKGROUND

[0002] The huge cystic / solid mass in the pelvic cavity is an abnormal mass that appears in the pelvic cavity or abdominal cavity, which has both cystic (liquid filling) and solid (solid tissue) components or is entirely cystic; in clinical surgery, when a huge cystic / solid mass needs to be removed, the cystic part of the cystic fluid needs to be sucked out first to reduce the volume of the mass, so as to expose the operation field as much as possible, and the current clinical method is to select the thicker and more solid cystic wall of the cystic part, and then a small opening is cut in the central area after the suture is not knotted, and then an aspirator is inserted to suck out the cystic fluid, and then the knot is closed after the volume of the cystic part is reduced.

[0003] However, the current surgical method has the following problems, first, the huge mass in the pelvic cavity generally has a large cystic wall tension, and cystic fluid often leaks from the needle hole after suturing, and if the mass (tumor) is malignant, it faces the risk of dissemination, and second, during the process of cutting the small opening of the mass to insert the aspirator and sucking the cystic fluid, the cystic fluid will flow into the pelvic cavity. SUMMARY

[0004] The purpose of the present application is to provide a sealed tumor-free drainage device for abdominal cavity tumors to solve the problem of inconvenient clinical surgery resection of the huge mass (tumor) in the pelvic cavity in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a sealed tumor-free drainage device for abdominal cavity tumors, comprising a protective sleeve for protecting the use of mass cystic fluid drainage, further comprising: a sealing mechanism fixedly arranged at the bottom of the protective sleeve, used for sealing and fitting the protective sleeve with the mass, the sealing mechanism comprises a receiving ring fixedly arranged at the bottom of the protective sleeve, and the bottom of the receiving ring is integrally formed with a sealing ring; a limiting mechanism arranged at the top of the protective sleeve for limiting and controlling the size of the opening at the top of the protective sleeve, the limiting mechanism comprises a sleeve ring fixedly arranged at the top of the protective sleeve, and the sleeve ring is slidably provided with a tightening rope in the inside.

[0006] Further, the sealing mechanism further comprises an inflation nozzle fixedly arranged on the side wall of the receiving ring.

[0007] Further, the sealing mechanism further comprises a glue layer adhesively arranged at the bottom of the sealing ring.

[0008] Further, the limiting mechanism further comprises a zooming cavity opened in the inside of the sleeve ring, and a zooming opening is opened in the side wall of the sleeve ring; the sleeve ring is slidably provided with the tightening rope through the zooming cavity and the zooming opening.

[0009] Further, the inside of the protective sleeve is inserted with a drainage tube.

[0010] Compared with the prior art, the sealed tumor-free drainage device for abdominal cavity tumor provided by the application is provided with a protective sleeve, and a receiving ring and a sealing ring are fixedly connected to the bottom of the protective sleeve, so that the protective sleeve is conveniently fixed and connected to the capsule wall of the mass by the receiving ring and the sealing ring at the bottom of the protective sleeve in cooperation with a glue layer, so that in the clinical surgery of removing the mass, the capsule fluid in the mass can be drained by the drainage tube passing through the inside of the protective sleeve, and the protective sleeve can protect the drainage of the drainage tube, prevent the capsule fluid from flowing into the abdominal cavity, and prevent the risk of dissemination, and after the capsule fluid in the mass is drained, the volume of the mass can be reduced to facilitate the surgery of removing the mass, and at the same time, a long abdominal incision is avoided when the abdomen is opened, which is beneficial to the recovery of the patient after the surgery. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0012] Figure 1 The overall structure diagram of the drainage device provided by the embodiment of the present application is shown.

[0013] Figure 2 The structure display diagram of the drainage device provided by the embodiment of the present application is shown.

[0014] Figure 3 The bottom structure diagram of the drainage device provided by the embodiment of the present application is shown.

[0015] Figure 4 The structure diagram of the receiving ring and the sealing ring provided by the embodiment of the present application is shown. Figure 3 The structure diagram of the receiving ring and the sealing ring provided by the embodiment of the present application is shown.

[0016] Figure 5 The cross-sectional structure diagram of the receiving ring and the sealing ring provided by the embodiment of the present application is shown.

[0017] Figure 6 The internal structure diagram of the sleeve ring provided by the embodiment of the present application is shown.

[0018] Explanation of reference signs:

[0019] 1, protective sleeve; 2, receiving ring; 3, sealing ring; 4, inflation nozzle; 5, sleeve ring; 6, drainage tube; 7, zoom port; 8, tightening rope; 9, glue layer; 10, zoom cavity. DETAILED DESCRIPTION

[0020] 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.

[0021] As attached Figure 1 To be continued Figure 6 As shown:

[0022] Example 1:

[0023] This invention provides a closed-type tumor-free drainage device for abdominal tumors, including a protective sleeve 1 for protection during drainage of cystic fluid from the mass, and further including: a sealing mechanism fixedly disposed at the bottom of the protective sleeve 1 for sealing and fitting the protective sleeve 1 to the mass, the sealing mechanism including a receiving ring 2 fixedly disposed at the bottom of the protective sleeve 1, the bottom of the receiving ring 2 having an integrally formed sealing ring 3; and a limiting mechanism disposed at the top of the protective sleeve 1 for limiting and controlling the size of the opening at the top of the protective sleeve 1, the limiting mechanism including a sleeve ring 5 fixedly disposed at the top of the protective sleeve 1, the sleeve ring 5 having a tightening rope 8 slidably disposed inside it.

[0024] By incorporating a protective sleeve 1, with a receiving ring 2 and a sealing ring 3 fixedly connected to its bottom, the protective sleeve 1 can be easily and securely attached to the mass wall via the receiving ring 2 and sealing ring 3 and the adhesive layer 9. This allows the drainage tube 6 to pass through the inside of the protective sleeve 1 during the clinical surgery to remove the mass, while the protective sleeve 1 protects the drainage tube 6, preventing the cystic fluid from flowing into the pelvic and abdominal cavities and causing a risk of dissemination. After the cystic fluid is drained, the mass volume can be reduced, facilitating the removal of the mass and reducing the size of the abdominal incision, which is beneficial for the patient's postoperative recovery.

[0025] refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The sealing mechanism includes a protective sleeve 1, a receiving ring 2, a sealing ring 3, an inflation nozzle 4, and an adhesive layer 9;

[0026] By incorporating a protective sleeve 1, during clinical surgery, when draining the cystic fluid within the mass, the protective sleeve 1 can be fixedly connected to the mass, protecting the incision site for cystic fluid drainage and preventing the cystic fluid from flowing into the pelvic and abdominal cavities and causing a risk of diffusion. A receiving ring 2 is fixedly connected to the bottom of the protective sleeve 1, and a sealing ring 3 is integrally formed at the bottom of the receiving ring 2. An inflation nozzle 4 is fixedly connected to the side wall of the receiving ring 2, allowing the protective sleeve 1 to be inflated by the inflation nozzle 4 during use. This controls the degree of expansion of the receiving ring 2 and the sealing ring 3, so that the bottom of the protective sleeve 1 can easily fit masses of different sizes through the receiving ring 2 and the sealing ring 3 with different degrees of expansion, thereby improving the sealing between the bottom of the protective sleeve 1 and the mass.

[0027] Meanwhile, the sealing ring 3 is designed with a corrugated shape to improve its flexibility and deformation ability. An adhesive layer 9 is applied to the bottom of the sealing ring 3, so that the sealing ring 3 can be gently pressed and deformed when it is attached to the mass wall, so that the adhesive layer 9 can be tightly attached to the mass wall. This ensures that the bottom of the sealing ring 3 is tightly attached to the mass wall, which facilitates the sealing connection between the bottom of the protective sleeve 1 and the mass, thereby preventing the cyst fluid from flowing out from the bottom of the protective sleeve 1. This reduces the volume of the mass, reduces the incision required for surgical removal of the mass, facilitates the removal of the mass, reduces surgical trauma to the patient, and is more conducive to the patient's postoperative recovery.

[0028] Secondly, the materials used for the protective sleeve 1, the receiving ring 2, and the sealing ring 3 are preferably medical-grade silicone, which has good flexibility and facilitates sealing and supporting the protective sleeve 1. The adhesive layer 9 is made of materials including but not limited to cyanoacrylate medical adhesive and fibrin adhesive. The diameter of the mass for clinical surgery is at least 15cm, and the specific size can be determined according to the advice of the temporary doctor.

[0029] In addition, during use, the inflation method of the air nozzle 4 includes, but is not limited to, electric air pumps and manual air pumps, which can be selected according to the actual clinical situation.

[0030] Example 2:

[0031] refer to Figure 1 and Figure 6 The limiting mechanism includes a sleeve ring 5, a scaling cavity 10, a scaling port 7, and a drainage tube 6;

[0032] A sleeve 5 is fixedly connected to the top of the protective sleeve 1, and a scaling cavity 10 is provided inside the sleeve 5, and a scaling opening 7 is provided on the side wall of the sleeve 5. This allows the sleeve 5 to be slidably connected to a tightening rope 8 through the scaling cavity 10 and the scaling opening 7. When draining fluid from the mass, the protective sleeve 1 is first sealed and fixed to the mass wall by the receiving ring 2 and the sealing ring 3. Then, the mass wall inside the protective sleeve 1 is cut open to create a drainage opening. Finally, the drainage tube 6 is inserted into the protective sleeve 1, and the fluid is drained from the mass wall. The incision extends into the mass, and the other end of the drainage tube 6 is connected to a draining device to facilitate negative pressure drainage of the cyst fluid within the mass wall. During drainage, the tightening rope 8 can be tightened and bound to the drainage tube 6 within the connecting ring 5, thus ensuring the drainage tube 6 is stably bound within the protective sleeve 1 and improving the stability of drainage of the cyst fluid within the mass. After the drainage operation is completed, the drainage tube 6 is removed, and the tightening rope 8 is knotted to seal the protective sleeve 1 to prevent cyst fluid from leaking out through the cyst wall incision during subsequent surgeries.

[0033] Meanwhile, the materials used for the connecting ring 5 include, but are not limited to, medical silicone, and the materials used for the tightening cord 8 include, but are not limited to, medical non-woven fabric. In addition, since the connecting ring 5 needs to be knotted and sealed with the tightening cord 8, the material selected for the connecting ring 5 must meet the requirements of softness, so as to facilitate knotting and sealing with the tightening cord 8 and prevent the cyst fluid from flowing out of the cyst wall incision through the connecting ring 5.

[0034] Working Principle: This closed-loop, tumor-free drainage device for abdominal tumors primarily addresses the risk of tumor cell dissemination caused by leakage of cystic fluid from needle punctures or incisions during preoperative drainage of large cystic / solid masses in the pelvic and abdominal cavities before surgical resection. The core components of the device include a protective sleeve 1, a sealing mechanism, and a limiting mechanism. The sealing mechanism is fixedly located at the bottom of the protective sleeve 1 to ensure a tight fit between the protective sleeve 1 and the cyst wall, preventing leakage of cystic fluid. Specifically, the sealing mechanism includes a receiving ring 2, a sealing ring 3, an inflation nozzle 4, and an adhesive layer 9. The receiving ring 2 is fixedly connected to the bottom of the protective sleeve 1. The sealing ring 3 is integrally formed at the bottom of the receiving ring 2 and is designed with a corrugated shape to enhance flexibility and deformation capacity. The inflation nozzle 4 is located on the side wall of the receiving ring 2 and is used to allow air to pass through... The inflation control adjusts the expansion of the receiving ring 2 and the sealing ring 3 to accommodate different sized abscess walls, improving sealing adaptability. The adhesive layer 9, bonded to the bottom of the sealing ring 3, uses cyanoacrylate medical adhesive or fibrin glue to firmly adhere the sealing ring 3 to the abscess wall, forming a preliminary sealing barrier. A limiting mechanism is located at the top of the protective sleeve 1 to adjust the size of the opening at the top of the protective sleeve 1 and fix the drainage tube 6. The limiting mechanism includes a sleeve ring 5, a scaling cavity 10, a scaling opening 7, and a tightening rope 8. The sleeve ring 5 is fixed to the top of the protective sleeve 1, with a scaling cavity 10 inside and a scaling opening 7 on its side wall. The tightening rope 8 slides within the scaling cavity 10 and the scaling opening 7. Pulling the tightening rope 8 adjusts the opening diameter of the sleeve ring 5, thus controlling the drainage tube 6. The process involves binding and securing the drainage tube 6, as well as sealing the protective sleeve 1 after the drainage procedure. Furthermore, the drainage tube 6 is inserted inside the protective sleeve 1 for actual drainage. During use, the protective sleeve 1 is first sealed to the mass wall via the bottom sealing mechanism. Specifically, the doctor aligns the sealing ring 3 with the mass wall, inflates it through the inflation nozzle 4 to moderately expand the receiving ring 2 and the sealing ring 3, and gently presses the sealing ring 3 to deform it and fit it against the mass wall. Simultaneously, the adhesive layer 9 provides additional adhesion, ensuring no gaps between the bottom of the protective sleeve 1 and the mass. Subsequently, a small incision is made in the mass wall within the area covered by the protective sleeve 1, and the drainage tube 6 is inserted from the top of the protective sleeve 1, extending into the mass through the connecting ring 5. The other end of the drainage tube 6 is connected to a negative pressure drainage device to begin draining the cyst fluid. During drainage, the tightening rope 8 of the limiting mechanism tightens the connecting ring 5, stably binding the drainage tube 6 within the protective sleeve 1 to prevent displacement or detachment. Simultaneously, the protective sleeve 1 fully covers the drainage area, creating a sealed environment to prevent cyst fluid from splashing out or leaking into the pelvic and abdominal cavities during drainage. After drainage, the mass shrinks in size due to the reduced cyst fluid, facilitating subsequent surgical removal. Furthermore, the protective sleeve 1 reduces the risk of cyst fluid dissemination, allowing for smaller abdominal incisions and promoting postoperative recovery. The entire device, through the protection of the protective sleeve 1, the adaptive sealing of the sealing mechanism, and the stable fixation of the limiting mechanism, collaboratively achieves tumor-free, closed drainage, effectively solving the problems of cyst fluid leakage and dissemination in traditional surgery, thus improving surgical safety and efficiency.

[0035] 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 closed tumor-free drainage device for abdominal cavity tumor, comprising a protective sleeve (1) for protecting the user during mass cyst fluid drainage, characterized in that, Also include: Sealing mechanism, fixedly arranged at the bottom of the protective sleeve (1), for sealing and fitting of the protective sleeve (1) and the tumor capsule wall, the sealing mechanism comprises a receiving ring (2) fixedly arranged at the bottom of the protective sleeve (1), and the bottom of the receiving ring (2) is integrally formed with a sealing ring (3); Limiting mechanism, arranged at the top of the protective sleeve (1), for limiting and controlling the size of the opening at the top of the protective sleeve (1), the limiting mechanism comprises a sleeve ring (5) fixedly arranged at the top of the protective sleeve (1), and the sleeve ring (5) is slidably provided with a tightening rope (8) inside.

2. A closed non-tumor draining device for abdominal cavity tumors according to claim 1, characterized in that, The sealing mechanism further comprises an inflation nozzle (4) fixedly arranged on the side wall of the receiving ring (2).

3. A closed non-tumor draining device for abdominal cavity tumors according to claim 2, characterized in that, The sealing mechanism further comprises a glue layer (9) adhesively arranged at the bottom of the sealing ring (3).

4. The closed non-tumor draining device for abdominal cavity tumor according to claim 1, characterized in that, The limiting mechanism further comprises a zoom cavity (10) opened in the inside of the sleeve ring (5), and the side wall of the sleeve ring (5) is provided with a zoom port (7); The sleeve ring (5) is slidably provided with the tightening rope (8) through the zoom cavity (10) and the zoom port (7).

5. The closed non-tumor draining device for abdominal cavity tumor according to claim 1, characterized in that, The inside of the protective sleeve (1) is inserted with a drainage tube (6).