Abdominal cavity drainage tube

Abstract

The utility model discloses an abdominal cavity drainage tube which comprises a drainage tube body, a first air bag assembly fixedly attached to the inner wall of an abdominal cavity and a second air bag assembly attached to the outer wall of the abdominal cavity, and the drainage tube body is sleeved with a sleeve. The first air bag assembly and the second air bag assembly are both arranged on the sleeve, the first air bag assembly comprises a plurality of plastic pressing plates which are circumferentially distributed on the sleeve at equal intervals, and first air bags are arranged between the plastic pressing plates and the sleeve; the second air bag assembly is arranged below the first air bag assembly. After the first air bag assembly of the drainage tube is inflated, the first air bag can open the plastic pressing plate, while the plastic pressing plate is opened, the plastic pressing plate can provide counter-acting force to press the air bags, the upward expansion tendency of the air bags is reduced, the air bags are spread to the periphery as much as possible, and the first air bag on the inner wall of the abdominal cavity is reduced to be spherical when inflated; the contact area of the first air bag and the inner wall of the abdominal cavity is increased, the blocking effect is improved, liquid leakage risks are reduced, and puncture opening infection is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of drainage devices, and particularly to an abdominal drainage tube. Background Art

[0002] A drainage tube is used for clinical surgical drainage, guiding pus, blood, and fluid accumulated between human tissues or in body cavities to the outside of the body, and is a medical device that prevents postoperative infection and promotes wound healing.

[0003] Most of the abdominal drainage tubes used clinically are made of latex or silicone rubber, and are mainly indwelled in the abdominal cavity for a certain period of time after the patient's surgery. Currently, in addition to using adhesive tape to block the abdominal drainage tube, an airbag is also used to block it on the inner and outer sides of the abdominal cavity. For example, a leakage-proof thoracic and abdominal drainage tube (application number: 2015207040457) is disclosed in a Chinese patent, and this drainage tube also uses two airbags for blocking. However, after the airbag is inflated, it is roughly spherical, and the contact area between the spherical structure and the inner and outer walls of the abdominal cavity is small, and the blocking degree may not be sufficient. When the drainage tube moves, the accumulated fluid may leak out from the position where the airbag and the abdominal wall fit less, which may cause puncture site infection. Summary of the Utility Model

[0004] The technical problem to be solved by the present application is to provide an abdominal drainage tube that can reduce the leakage of fluid.

[0005] To solve the above technical problem, the present application adopts the following technical solutions:

[0006] An abdominal drainage tube includes a drainage tube body, a sleeve is sleeved outside the drainage tube body, and further includes a first airbag assembly that fits and fixes with the inner wall of the abdominal cavity, and a second airbag assembly that fits with the outer wall of the abdominal cavity; both the first airbag assembly and the second airbag assembly are arranged on the sleeve, the first airbag assembly includes a plurality of plastic pressing plates that are circumferentially and equidistantly distributed on the sleeve, and a first airbag is arranged between the plastic pressing plate and the sleeve; the second airbag assembly is arranged below the first airbag assembly.

[0007] According to the further expansion of the above solution, the plastic pressing plate is bent downward, and its bottom is buckled inward to form an inward flanging.

[0008] According to the further expansion of the above solution, the first airbag fits with the inner wall of the plastic pressing plate, and the first airbag is also fixedly connected to the outer wall of the sleeve.

[0009] According to the further expansion of the above solution, an air inlet communicating with the first airbag is opened on the sleeve.

[0010] Compared with the prior art, the present application achieves at least the following beneficial effects: after the first airbag assembly of the drainage tube is inflated, the first airbag will expand the plastic pressure plate. While expanding the plastic pressure plate, the plastic pressure plate will also provide a reaction force to press the airbag, reducing the tendency of the airbag to expand upward, allowing the airbag to spread as much as possible, reducing the spherical shape of the first airbag on the inner wall of the abdominal cavity when inflated, increasing the contact area between the first airbag and the inner wall of the abdominal cavity, and improving the blocking effect, thereby reducing the risk of leakage and preventing puncture site infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0012] Figure 1 This is a three-dimensional display diagram of an abdominal drainage tube according to one embodiment of the present application;

[0013] Figure 2 This is a front cross-sectional view of a peritoneal drainage tube of the present application;

[0014] Figure 3 This is a front view of a first airbag assembly of an abdominal drainage tube of the present application after being inflated and opened;

[0015] Figure 4 for Figure 3 Main diagram section view in state;

[0016] Figure 5 for Figure 3 A bottom sectional view at AA of the second airbag assembly, the sectional view showing a state in which the torsion ring of the second airbag assembly presses the limit pin;

[0017] Figure 6 For Figure 5 Based on the above, a schematic cross-sectional view from above is shown in which the torsion ring of the second airbag assembly loosens the limit pin.

[0018] The numbers in the figure are: 1, drainage tube body; 2, sleeve; 21, guide groove; 3, plastic pressure plate; 31, inner flange; 4, first air bag; 5, second air bag; 6, torsion ring; 61, gradual slope; 7, sliding sleeve; 8, limit pin. DETAILED DESCRIPTION

[0019] The present application will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0020] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0021] In view of the defect of the prior art that the airbag is spherical, the contact area between its contact surface and the inner wall of the abdominal cavity is small, and there is a defect of fluid accumulation and leakage. After careful analysis, the inventor found that the reason for the above-mentioned problems of the existing drainage tube is mainly that the structure of the current drainage tube for blocking the puncture port is a spherical airbag, and the spherical airbag relies on the arc surface to contact the inner wall of the abdominal cavity for blocking. However, the contact area between the arc surface and the inner wall of the abdominal cavity is relatively small. When the drainage tube moves, such as moving or rotating in the puncture port, the airbag in the abdominal cavity is no longer in contact with the inner wall of the abdominal cavity, and the accumulated fluid will slowly overflow from the gap between the airbag and the inner wall of the abdominal cavity. Although sometimes it can be blocked in time, the contact area between the arc surface and the inner wall of the abdominal cavity is relatively small, and the accumulated fluid may overflow from the gap quickly. Based on the above analysis, the inventor has made structural improvements to the abdominal drainage tube.

[0022] like Figure 1 As shown, in one embodiment of an abdominal drainage tube of the present application, the drainage tube includes a drainage tube body 1, a guide hole is provided on the side wall of one end of the drainage tube body 1, and the other end is connected to a drainage bag; the outer sleeve of the drainage tube body 1 is provided with a sleeve 2 made of rubber material. It also includes a first airbag 4 component that is fixed to the inner wall of the abdominal cavity, and a second airbag 5 component that is fixed to the outer wall of the abdominal cavity; the first airbag 4 component and the second airbag 5 component are both arranged on the sleeve 2, and the first airbag 4 component includes a plurality of plastic pressure plates 3 that are equidistantly distributed on the sleeve 2, and a first airbag 4 arranged in an annular manner is provided between the plastic pressure plate 3 and the sleeve 2; the second airbag 5 component is arranged below the first airbag 4 component. When the first airbag 4 is inflated, the airbag expands and the plastic pressure plate 3 is pushed upward. The plastic pressure plate 3 has a certain toughness and will exert a reaction force on the airbag, which is equivalent to pressing the airbag so that the airbag will not expand upward excessively, thereby making the airbag as Figure 3 As shown, it is generally in an umbrella shape, which can increase the contact area between the first airbag 4 component and the inner wall of the abdominal cavity.

[0023] In order to enable the plastic pressure plate 3 to open when the first airbag 4 is inflated and reduce the first airbag 4 from expanding excessively downward when inflated, causing the bottom of the first airbag 4 to be too arc-shaped, such as Figure 2As shown, the plastic pressing plate 3 is bent downward, and its bottom is buckled inward to form an inward flanging 31. When the first airbag 4 is inflated, blocked by the inward flanging 31 and subjected to the pulling force of the plastic pressing plate 3 opening to both sides, the bottom of the first airbag 4 is preferentially expanded around. When the first airbag 4 is over-inflated, the airbag will bulge downward. Therefore, the first airbag 4 cannot be over-inflated, and it is only necessary to expand the plastic pressing plate 3 during inflation.

[0024] To ensure that the first airbag 4 can expand the plastic pressing plate 3 and be stably fixed between the plastic pressing plate 3 and the sleeve 2, the first airbag 4 is attached to the inner wall of the plastic pressing plate 3, and the first airbag 4 is also fixedly connected to the outer wall of the sleeve 2.

[0025] To facilitate inflation of the first airbag 4, an air inlet communicating with the first airbag 4 is provided on the sleeve 2, and a gas source is connected to one end of the sleeve 2 away from the diversion hole of the drainage tube body 1, and the first airbag 4 can be inflated through the air inlet.

[0026] The function of the second airbag 5 is to block the abdominal wall. However, the abdominal wall thickness of different patients is different. In order to adjust the distance between the first airbag 4 assembly and the second airbag 5 assembly according to the conditions of different patients on the premise of blocking the abdominal wall, refer to Figure 2 and Figure 4 , the second airbag 5 assembly includes a sliding sleeve 7 made of hard plastic. The outer wall of the movable sleeve is sleeved with the second airbag 5. The second airbag 5 is provided with an inflation and deflation tube (not shown), and becomes oval after inflation; an annular groove is provided on the outer wall of the sliding sleeve 7 and below the second airbag 5, and two symmetrically distributed through holes are provided on the bottom surface of the annular groove. A movable limit pin 8 is provided in the through hole; a torsion ring 6 for pressing or releasing the limit pin 8 by rotation is provided in the annular groove.

[0027] Refer to Figure 5 and Figure 6 , the inner wall of the torsion ring 6 is provided with a gradient inclined surface 61. Specifically, the torsion ring 6 body is a circular ring, and two gradient inclined surfaces 61 for pressing or releasing the limit pin 8 are provided on its inner wall. The starting point of the gradient inclined surface 61 is lower than the inner wall of the torsion ring 6, and then gradually thickens clockwise until it is coplanar with the inner wall of the torsion ring 6. As Figure 5 shown, when the torsion ring 6 presses the limit pin 8, the limit pin 8 contacts the end point of the gradient inclined surface 61 (i.e., the position coplanar with the inner wall of the torsion ring 6). At this time, the torsion ring 6 presses the limit pin 8 and cannot rotate itself; as Figure 6 shown, when the torsion ring 6 releases the limit pin 8, the limit pin 8 contacts the starting point of the gradient inclined surface 61 (i.e., the position where the starting point of the gradient inclined surface 61 is lower than the inner wall of the torsion ring 6). At this time, the side surface of the limit pin 8 contacts the end surface of the starting point of the gradient inclined surface 61, and the torsion ring 6 cannot rotate anymore.

[0028] The side wall of the sleeve 2 is provided with a guiding groove 21, and a limiting pin 8 is arranged in the guiding groove 21. The limiting pin 8 moves in the guiding groove 21, so as to adjust the position of the second airbag 5 assembly relative to the first airbag 4 assembly. By rotating the torsion ring 6, the limiting pin 8 is made to press against the bottom surface of the guiding groove 21 to fix the second airbag 5 assembly.

[0029] During use, the present drainage tube is sent into the abdominal cavity through the puncture opening, and then the sleeve 2 is inflated. The gas enters the first airbag 4 through the air inlet, and the first airbag 4 expands, causing the plastic pressing plate 3 to open as Figure 4 shown. Then, the sleeve 2 is slightly pulled to make the bottom of the first airbag 4 contact with the inner wall of the abdominal cavity. Then, the position of the second airbag 5 is adjusted through the movable sleeve to make the second airbag 5 adhere to the outer wall of the abdominal cavity. The limiting pin 8 is locked through the torsion ring 6 to ensure the stable arrangement of the second airbag 5 assembly. Then, the second airbag 5 is inflated. When the second airbag 5 expands by inflation, it will pull the sleeve 2, making the bottom of the first airbag 4 assembly contact the inner wall of the abdominal cavity more tightly. The first airbag 4 assembly is in close contact with the inner wall of the abdominal cavity, and the contact area is larger than that of a spherical airbag, avoiding the risk of fluid flowing out from the puncture opening. When the second airbag 5 assembly is taken out from the puncture opening, the first airbag 4 is deflated to make it contract. At this time, the plastic pressing plate 3 will retract like closing an umbrella, without affecting the removal from the puncture opening.

[0030] It should be understood that all the above embodiments are exemplary rather than restrictive. Under the concept of the present application, various modifications or deformations made by those skilled in the art to the specific embodiments described above should fall within the protection scope of the present application.

Claims

1. An abdominal drainage tube, comprising a drainage tube body, and a sleeve is sleeved outside the drainage tube body, wherein: It further includes a first airbag assembly fixedly attached to the inner wall of the abdominal cavity and a second airbag assembly attached to the outer wall of the abdominal cavity; both the first airbag assembly and the second airbag assembly are provided on the sleeve. The first airbag assembly includes a plurality of plastic pressing plates circumferentially and equidistantly distributed on the sleeve, and a first airbag is provided between the plastic pressing plate and the sleeve; the second airbag assembly is provided below the first airbag assembly.

2. The drainage tube according to claim 1, wherein: The plastic pressing plate is bent downward, and its bottom is buckled inward to form an inward flanging.

3. The drainage tube according to claim 2, wherein: The first airbag is attached to the inner wall of the plastic pressing plate and is also fixedly connected to the outer wall of the sleeve.

4. The drainage tube according to claim 3, wherein: An air inlet communicating with the first airbag is provided on the sleeve.

5. The drainage tube according to claim 1, characterized in that: The second airbag assembly includes a sliding sleeve, and a second airbag is sleeved on the outer wall of the movable sleeve; an annular groove is provided on the outer wall of the sliding sleeve and below the second airbag, a through hole is provided on the bottom surface of the annular groove, and a limit pin is provided in the through hole; a torsion ring for pressing or releasing the limit pin is provided in the annular groove.

6. The drainage tube according to claim 5, wherein: A gradually changing inclined surface is provided on the inner wall of the torsion ring.

7. The drainage tube according to claim 5, characterized in that: A guiding groove is provided on the side wall of the sleeve, and the limit pin is provided in the guiding groove.

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