Intracavity drainage expansion assembly and releaser thereof

Abstract

The invention relates to an intracavity drainage expansion assembly and a releaser thereof, the intracavity drainage expansion assembly comprises an elastic supporting tube, an elastic covering film, an elastic pressing piece used for applying pressure to a wound and a catheter, the elastic supporting tube comprises a connecting tube section and supporting sections which are used for abutting against the inner wall of a rectum cavity and are correspondingly and integrally connected to the two ends of the connecting tube section; the tight supporting section is a pipe section protruding outwards in the radial direction of the tight supporting section. The elastic covering film covers the side wall of the elastic supporting pipe. The elastic pressing piece is tubular and is arranged on the connecting pipe section in a sleeving mode, a containing gap is formed between the elastic extrusion piece and the elastic covering film, and a plurality of micro through holes are formed in the pipe wall of the elastic pressing piece; the guide pipe comprises a suction section and a connecting section which are integrally connected, the suction section is provided with a plurality of suction holes and located in the containing gap, and the connecting section is communicated with the vacuum pump. The invention provides an intracavitary drainage expansion assembly and a releaser thereof, belongs to the technical field of medical instruments, and aims to discharge tissue fluid secreted at a leakage part in time, keep a negative pressure environment at the leakage part and improve a recovery effect.

Description

Technical Field

[0001] This invention relates to an intracavitary drainage and dilation assembly and its release device, belonging to the field of medical device technology. Background Technology

[0002] Following colorectal resection, anastomotic leakage (AL) is a common and difficult-to-manage complication. Traditional treatment strategies include diverting an ileostomy and transabdominal drainage and irrigation. However, anal closure and intraluminal pressure allow fecal matter and bacteria-laden intestinal contents to leak into the abdominopelvic cavity, leading to toxemia, sepsis, multiple organ failure, and even death.

[0003] Traditional treatments for anastomotic leaks have shortcomings in both concept and method. Changing the external drainage from the abdominal and pelvic cavity to intrarectal drainage can prevent leakage of intestinal contents from contaminating the area around the anastomosis and the abdominal and pelvic cavity, leading to infection and related complications, and has achieved good results. However, closing anastomotic leaks with negative pressure suction within the intestinal cavity has a drawback: long-term suction can lead to anastomotic stenosis. After the intestinal lumen narrows, it is not conducive to closing infectious leaks, making it difficult to fully drain abscesses in the abdominal and pelvic cavity, resulting in abscess residue. This requires frequent replacement of the negative pressure suction sponge and the necessity of diversion stomas.

[0004] CN214128934U discloses an anastomotic leak stent, which features an inwardly concave constriction portion that does not contact the leak opening, thus avoiding pressure on the leak and reducing its impact on blood supply. An outwardly bulging portion generates significant pressure, firmly securing the stent and maintaining a stable relative position between the constriction portion and the leak opening. The interaction of the bulging portion, body, and constriction portion reduces the impact on blood supply to the leak and prevents slippage, promoting leak healing. However, it also prevents timely drainage of secreted tissue fluid from the leak, increasing recovery time. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an intracavitary drainage and dilation component that can promptly drain the tissue fluid secreted at the oral leakage site, maintain a negative pressure environment at the oral leakage site, and improve the recovery effect.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an intracavitary drainage and dilation assembly, comprising:

[0007] An elastic support tube, comprising a connecting tube section and a tightening section for pressing against the inner wall of the rectum and integrally connected to both ends of the connecting tube section, wherein the tightening section is a tube section that protrudes outward along its radial direction;

[0008] An elastic film is provided, which covers the sidewall of the elastic support tube.

[0009] An elastic compression member for applying pressure to a wound, the elastic compression member is tubular and sleeved on the connecting pipe section, an accommodating gap is formed between the elastic compression member and the elastic covering film, and multiple micro-holes are formed on the tube wall of the elastic compression member;

[0010] The conduit includes an integrally connected suction section and a connecting section. The suction section has multiple suction holes located within the accommodating gap, and the connecting section is connected to a vacuum pump.

[0011] The beneficial effects of this invention are as follows: The elastic support tube is delivered into the rectal lumen, where it expands and the tightening section presses against the inner wall of the rectal lumen to fix the connecting tube section. An elastic compression member is fitted onto the connecting tube section, and as the elastic support tube expands, it compresses the leaking opening. The elastic support tube is tubular with a channel for defecation in the middle. An elastic membrane is fixed to the side wall of the elastic support tube to prevent excrement from contaminating the leaking opening. A receiving gap is formed between the elastic membrane and the elastic compression member. The suction section of the catheter is located within this receiving gap. The connecting section of the catheter is connected to a vacuum pump. Tissue fluid secreted at the leaking opening enters the receiving gap through micropores and is suctioned out through the catheter, ensuring the leaking opening remains in a dry environment, improving recovery. Negative pressure suction prevents intestinal contents from leaking out through the opening, prevents mucosal eversion, promotes anastomotic leak healing, and the negative pressure also adsorbs the elastic compression member onto the inner wall of the rectal lumen.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the elastic support tube is made of titanium alloy.

[0014] The advantages of adopting the above-mentioned further solutions are: long service life and less susceptibility to corrosion.

[0015] Furthermore, the elastic support tube is woven from titanium alloy wires, and the surface of the elastic support tube is mesh-like.

[0016] The beneficial effect of adopting the above-mentioned further solution is that it is elastic and can contract and expand under the control of external forces.

[0017] Furthermore, the surface of the tensioning section is arc-shaped.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that it fits more closely to the inner wall of the rectal cavity.

[0019] Furthermore, the elastic clamping element is made of polyurethane foam, and its thickness is 8-12 mm and its length is 48-52 mm.

[0020] Furthermore, the elastic film is adhered and fixed to the outer wall of the elastic support tube.

[0021] Furthermore, the material of the elastic coating is silicone.

[0022] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A release device for delivering and releasing an intrarectal drainage and dilation component as described in any one of claims 1 to 7 into the rectal cavity, comprising: a delivery tube and a push rod, wherein the outlet end of the delivery tube is a pointed tip, the elastic clamping member is slidably connected in the delivery tube and can be output from the outlet end, the push rod is inserted into the other end of the delivery tube and passes through the elastic support tube, and an elastic stop is fixed on the push rod, the elastic stop abutting against the end of the elastic support tube away from the pointed tip.

[0023] The beneficial effects of the present invention are as follows: after the intraluminal drainage expansion component is compressed, it is placed in the delivery tube, the push rod passes through the inner hole of the elastic support tube, the elastic block presses against one end of the elastic support tube, the tip of the delivery tube extends into the rectal lumen, the push rod is pushed, and the intraluminal drainage expansion component is output from the outlet end of the delivery tube, and the intraluminal drainage expansion component is delivered to the rectal lumen.

[0024] Furthermore, it also includes a camera probe, which is mounted on one end of the push rod near the outlet end.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the camera probe can observe the situation inside the rectal lumen, which facilitates the delivery of the intrarectal drainage dilation component to the oral leak location.

[0026] Furthermore, it also includes a sealing cap, which covers the end of the delivery pipe away from the outlet end and has a through hole, through which one end of the push rod passes. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an intracavitary drainage and expansion assembly according to the present invention;

[0028] Figure 2 This is a schematic diagram of the elastic support tube and elastic membrane in an intracavitary drainage and expansion assembly of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a release device according to the present invention;

[0030] Figure 4 for Figure 3 Enlarged view of section A.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Elastic support tube, 101-Tightening section, 102-Connecting tube section, 2-Elastic film, 3-Elastic clamping component, 4-Conduit, 41-Suction hole, 5-Conveying tube, 6-Push rod, 7-Elastic stop, 8-Camera probe, 9-Sealing cap. Detailed Implementation

[0033] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0034] The purpose of this invention is to provide an intracavitary drainage and expansion component to solve the problems existing in the prior art, which can promptly drain the tissue fluid secreted at the oral leakage site, maintain a negative pressure environment at the oral leakage site, and improve the recovery effect.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] This invention provides an intracavitary drainage and dilation assembly, such as... Figures 1-2 As shown, the device includes: an elastic support tube 1, an elastic covering 2, an elastic clamping member 3 for applying pressure to the wound site, and a catheter 4. The elastic support tube 1 includes a connecting tube section 102 and a clamping section 101 integrally connected to both ends of the connecting tube section 102 for pressing against the inner wall of the rectum. The clamping section 101 is a tube section that protrudes outward along its radial direction. The elastic covering 2 covers the side wall of the elastic support tube 1. The elastic clamping member 3 is tubular and sleeved on the connecting tube section 102. An accommodating gap is formed between the elastic clamping member 3 and the elastic covering 2. Multiple micro-holes are opened on the tube wall of the elastic clamping member 3. The catheter 4 includes an integrally connected suction section and a connecting section. The suction section has multiple suction holes 41 located within the accommodating gap. The connecting section is connected to a vacuum pump.

[0037] The intraluminal drainage and expansion assembly provided by this invention delivers an elastic support tube 1 into the rectal lumen. The elastic support tube 1 self-expands, and the tightening section 101 is pressed against the inner wall of the rectal lumen to fix the connecting tube section 102. An elastic compression member is sleeved on the connecting tube section 102. The elastic compression member compresses the orifice as the elastic support tube 1 expands. The elastic support tube 1 is tubular with a channel for defecation in the middle. An elastic covering 2 is fixed on the side wall of the elastic support tube 1 to prevent excrement from contaminating the orifice. A receiving gap is formed between the elastic covering 2 and the elastic compression member. The suction section of the catheter 4 is located in the receiving gap. The connecting section of the catheter 4 is connected to a vacuum pump. Tissue fluid secreted at the orifice enters the receiving gap through micro-perforations and is suctioned out of the body through the catheter 4, ensuring that the orifice is always in a dry environment, improving the recovery effect. Negative pressure suction can prevent intestinal contents from leaking out through the orifice, prevent mucosal eversion, promote the healing of the anastomotic leak, and the negative pressure can also adsorb the elastic compression member onto the inner wall of the rectal lumen.

[0038] In one specific embodiment of the present invention, the elastic support tube 1 is made of titanium alloy, which has a long service life and is not easily corroded.

[0039] In one specific embodiment of the present invention, the elastic support tube 1 is woven from titanium alloy wires. The surface of the elastic support tube 1 is mesh-like and elastic, and can contract and expand under the control of external force.

[0040] In one specific embodiment of the present invention, the surface of the supporting section 101 is arc-shaped, which fits more closely to the inner wall of the rectal cavity.

[0041] In one specific embodiment of the present invention, the elastic clamping member 3 is made of polyurethane foam, and the thickness of the elastic clamping member 3 is 8-12mm and the length is 48-52mm.

[0042] In one specific embodiment of the present invention, the elastic film 2 is adhered and fixed to the outer wall of the elastic support tube 1.

[0043] In one specific embodiment of the present invention, the elastic coating 2 is made of silicone, and the silicone film is impermeable to liquids and gases.

[0044] This invention provides a release device for delivering and releasing an intrarectal drainage dilation assembly according to any one of claims 1 to 7 into the rectal cavity, such as... Figures 3-4 As shown, it includes: a conveying pipe 5 and a push rod 6. The outlet end of the conveying pipe 5 is a pointed end. The elastic clamping member 3 is slidably connected inside the conveying pipe 5 and can be output from the outlet end. The push rod 6 enters from the other end of the conveying pipe 5 and passes through the elastic support pipe 1. An elastic stop 7 is fixed on the push rod 6. The elastic stop 7 abuts against the end of the elastic support pipe 1 away from the pointed end.

[0045] The release device provided by the present invention compresses the intracavitary drainage expansion component and places it in the delivery tube 5. The push rod 6 passes through the inner hole of the elastic support tube 1, the elastic stop 7 presses against one end of the elastic support tube 1, the tip of the delivery tube 5 extends into the rectal cavity, pushes the push rod 6, and outputs the intracavitary drainage expansion component from the outlet end of the delivery tube 5, and delivers the intracavitary drainage expansion component into the rectal cavity.

[0046] In one specific embodiment of the present invention, a camera probe 8 is also included, which is installed at one end of the push rod 6 near the outlet end.

[0047] The camera probe 8 can observe the situation inside the rectal cavity, making it easier to deliver the intrarectal drainage dilation component to the orifice location.

[0048] Preferably, the camera probe 8 can transmit the image to a mobile phone screen or computer screen for easy observation.

[0049] In one specific embodiment of the present invention, a sealing cover 9 is also included. The sealing cover 9 is disposed on the end of the conveying pipe 5 away from the outlet end and has a through hole. One end of the push rod 6 passes through the through hole.

[0050] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intracavitary drainage and dilation assembly, characterized in that, include: The elastic support tube (1) includes a connecting tube section (102) and a tensioning section (101) for pressing against the inner wall of the rectum and integrally connected to both ends of the connecting tube section (102). The tensioning section (101) is a tube section that protrudes outward along its radial direction. An elastic membrane (2) covers the side wall of the elastic support tube (1); An elastic compression member (3) for applying pressure to the wound is tubular and sleeved on the connecting pipe section (102). An accommodating gap is formed between the elastic compression member (3) and the elastic covering (2). Multiple micro-holes are provided on the tube wall of the elastic compression member (3). The conduit (4) includes an integrally connected suction section and a connecting section. The suction section has multiple suction holes (41) and is located within the accommodating gap. The connecting section is connected to the vacuum pump.

2. The intracavitary drainage and dilation assembly according to claim 1, characterized in that, The elastic support tube (1) is made of titanium alloy.

3. The intracavitary drainage and dilation assembly according to claim 2, characterized in that, The elastic support tube (1) is woven from titanium alloy wire, and the surface of the elastic support tube (1) is mesh-like.

4. The intracavitary drainage and dilation assembly according to claim 1, characterized in that, The surface of the tensioning section (101) is arc-shaped.

5. The intracavitary drainage and dilation assembly according to claim 1, characterized in that, The elastic clamping member (3) is made of polyurethane foam, and the thickness of the elastic clamping member (3) is 8-12mm and the length is 48-52mm.

6. The intracavitary drainage and dilation assembly according to claim 1, characterized in that, The elastic film (2) is adhered and fixed to the outer wall of the elastic support tube (1).

7. The intracavitary drainage and dilation assembly according to claim 1, characterized in that, The elastic coating (2) is made of silicone.

8. A release device, characterized in that, For delivering and releasing an intrarectal drainage dilation assembly according to any one of claims 1 to 7 into the rectal cavity, comprising: a delivery tube (5) and a push rod (6), wherein the outlet end of the delivery tube (5) is a pointed end, the elastic clamping member (3) is slidably connected inside the delivery tube (5) and can be output from the outlet end, the push rod (6) is inserted into and passes through the elastic support tube (1) from the other end of the delivery tube (5), and an elastic stop (7) is fixed on the push rod (6), the elastic stop (7) abutting against the end of the elastic support tube (1) away from the pointed end.

9. A release device according to claim 8, characterized in that, It also includes a camera probe (8), which is mounted on one end of the push rod (6) near the outlet end.

10. A release device according to claim 8, characterized in that, It also includes a sealing cap (9), which covers the end of the delivery pipe (5) away from the outlet end and has a through hole, through which one end of the push rod (6) passes.

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