Anti-backflow negative pressure drainage bag

Abstract

The utility model relates to the technical field of negative pressure drainage bags, and discloses an anti-backflow negative pressure drainage bag which comprises a liquid storage bag, a drainage tube, an exhaust tube, an elastic air bag and a drainage bag body, a connecting assembly is fixedly installed on the inner wall of the top of the liquid storage bag, and the connecting assembly is communicated with an opening in the top of the drainage bag body. The bottom end of the drainage tube and the bottom end of the exhaust tube both extend into the drainage bag, the drainage bag is formed by fusing two PVC films, the two PVC films are not connected at one section of the center of the bottom of the drainage bag, connecting rings are fixedly installed at the left corner and the right corner of the bottom of the drainage bag, elastic ropes are tied to the connecting rings, the elastic ropes are used for pulling the connecting rings, and the drainage bag is fixed to the drainage tube. Compared with a mode of attaching the thin film through pressure difference, the mode has the advantages that traction force towards the two sides can be provided for the thin film, the thin film is pulled open, and then the problem of deformation of the thin film is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure drainage bag technical field, concretely is a kind of anti-reflux negative pressure drainage bag. BACKGROUND

[0002] In clinic, often need to implement drainage to patient, and urine, body fluid or gas in patient body is discharged. The device for clinical drainage is various, mainly has medical drainage bag, disposable negative pressure device (or ball) and negative pressure drainage bottle, but they all have some deficiencies;

[0003] The existing Chinese patent CN203208419U discloses a medical negative pressure anti-reflux drainage bag, which can continuously generate negative pressure by extruding the air bag, so that the clinical drainage is more sufficient, and the operation is simple and easy. Especially when the drainage port or drainage catheter is blocked by mucus, pus and the like, causing poor drainage, the liquid or gas drained into the liquid storage bag body has the anti-reflux effect because the two layers of the film bag are tightly attached together after the air bag is loosened, thereby preventing the reverse flow of liquid or gas and effectively reducing the risk of secondary infection of the patient.

[0004] However, the opening and closing of the communication between the film bag and the liquid storage bag in the above-mentioned medical negative pressure anti-reflux drainage bag is realized by the change of the internal and external air pressure, which is ingenious in design, but the two layers of the film bag are prone to bending and deforming when opening and closing, which causes the two layers of the film bag to not be well attached together. When the film is bent and deformed, an unsealed air flow channel is easily formed at the attachment of the two layers of the film. After the air bag is loosened, the air in the liquid storage bag flows into the film bag, thereby causing the negative pressure at the drainage tube to not meet the requirements of drainage. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an anti-reflux negative pressure drainage bag to solve the problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an anti-reflux negative pressure drainage bag, comprising a liquid storage bag, a drainage tube, an exhaust pipe, an elastic air bag and a drainage bag, a connecting assembly is fixedly installed on the top inner wall of the liquid storage bag, the connecting assembly is in communication with the top opening of the drainage bag, the bottom ends of the drainage tube and the exhaust pipe are inserted into the drainage bag, the drainage bag is fused from two PVC films, the two PVC films are not connected at the center of the bottom of the drainage bag, connecting rings are fixedly installed at the left and right corners of the bottom of the drainage bag, elastic ropes are tied on the connecting rings, one end of the elastic rope away from the connecting ring is fixedly connected with the inner wall of the liquid storage bag, and an elastic air bag is communicatively arranged at the end of the exhaust pipe away from the drainage bag.

[0007] In a preferred embodiment of the anti-backflow negative pressure drainage bag provided by this utility model, the connecting assembly includes a top panel frame, which is fixedly installed on the top inner wall of the liquid storage bag. A sealing panel is fixedly installed on the inner side of the top panel frame. The drainage tube and the exhaust tube both pass through the sealing panel, and the outer walls of the drainage tube and the exhaust tube are fixedly connected to the sealing panel. An inner support ring and an outer clamping ring are fixedly installed at the bottom of the top panel frame. The inner support ring supports the top opening of the drainage bag, and the outer clamping ring is fitted onto the top of the drainage bag.

[0008] In a preferred embodiment of the anti-backflow negative pressure drainage bag provided by this utility model, the upper part of the liquid storage bag is made of rigid plastic, the lower part of the liquid storage bag is made of soft elastic film, and the connection between the elastic rope and the liquid storage bag is located in the upper part of the liquid storage bag.

[0009] In a preferred embodiment of the anti-backflow negative pressure drainage bag provided by this utility model, a drain valve is connected to the bottom of the liquid storage bag.

[0010] As a preferred embodiment of the anti-backflow negative pressure drainage bag provided by this utility model, the upper half of the liquid storage bag has an inspection port on the front, and the inner wall of the inspection port is fixed with an inspection panel by screws.

[0011] As a preferred embodiment of the anti-backflow negative pressure drainage bag provided by this utility model, a handle is fixedly installed on the back of the upper half of the liquid storage bag, and an exhaust port is provided on the right side of the upper half of the liquid storage bag.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By using an elastic rope to pull the connecting ring, the two corners at the bottom of the drainage bag are tightened, so that the opening at the bottom of the drainage bag is sealed under external force. Compared with the pressure difference bonding method, this method can give the film a pulling force to both sides, pull the film open, and thus avoid the problem of film deformation.

[0014] 2. The upper part of the reservoir bag is made of rigid plastic, while the lower part is made of soft elastic film. The connection between the elastic cord and the reservoir bag is located in the upper part of the reservoir bag, so that when carrying the lower part of the reservoir bag (without drainage fluid), it can be inserted into the upper part of the reservoir bag. Because the upper part of the reservoir bag is supported by rigid material, it can stably connect the elastic cord. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Structural diagram of the rear view;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model after the inspection port is opened;

[0018] Figure 4 This is a schematic diagram of the exploded view of the connecting component of this utility model.

[0019] In the diagram: 1. Liquid storage bag; 2. Drainage tube; 3. Exhaust pipe; 4. Elastic airbag; 5. Drainage bag; 6. Connecting ring; 7. Elastic rope; 8. Drain valve; 9. Connecting assembly; 901. Top panel frame; 902. Inner support ring; 903. Outer clamping ring; 904. Sealing panel; 10. Handle; 11. Exhaust port; 12. Inspection panel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Please see Figures 1-4This utility model provides a technical solution: a backflow-prevention negative pressure drainage bag, comprising a liquid storage bag 1, a drainage tube 2, an exhaust pipe 3, an elastic airbag 4, and a drainage bag 5. A connecting component 9 is fixedly installed on the inner top wall of the liquid storage bag 1, and the connecting component 9 communicates with the top opening of the drainage bag 5. The bottom ends of the drainage tube 2 and the exhaust pipe 3 both extend into the drainage bag 5. The drainage bag 5 is made of two PVC films fused together, with the two PVC films not connected at the center of the bottom of the drainage bag 5. The bottom left and right corners of the drainage bag 5 are fixed. The fixed installation consists of a connecting ring 6, with an elastic rope 7 attached to the connecting ring 6. The end of the elastic rope 7 away from the connecting ring 6 is fixedly connected to the inner wall of the liquid storage bag 1. The end of the exhaust pipe 3 away from the drainage bag 5 is connected to an elastic airbag 4. The connecting ring 6 is pulled by the elastic rope 7, which in turn tightens the two bottom corners of the drainage bag 5, so that the opening at the bottom of the drainage bag 5 is closed under external force. Compared with the pressure difference bonding method, this method can give the film a pulling force to both sides, pull the film open, and thus avoid the problem of film deformation.

[0025] The connecting component 9 includes a top panel frame 901, which is fixedly installed on the top inner wall of the liquid storage bag 1. A sealing panel 904 is fixedly installed on the inner side of the top panel frame 901. The drainage tube 2 and the exhaust tube 3 both pass through the sealing panel 904, and the outer walls of the drainage tube 2 and the exhaust tube 3 are fixedly connected to the sealing panel 904. An inner support ring 902 and an outer clamping ring 903 are fixedly installed at the bottom of the top panel frame 901. The inner support ring 902 supports the top opening of the drainage bag 5, and the outer clamping ring 903 is fitted onto the top of the drainage bag 5. The top panel frame 901 is set up to install the inner support ring 902, the outer clamping ring 903, and the sealing panel 904. The sealing panel 904 is used to close the top opening to prevent the drainage bag 5 from leaking from above. The inner support ring 902 is set up to support the top opening of the drainage bag 5, and the outer clamping ring 903 is set up to clamp the drainage bag 5 to the connecting component 9 to prevent the drainage bag 5 from falling off.

[0026] The upper part of the liquid storage bag 1 is made of rigid plastic, and the lower part of the liquid storage bag 1 is made of soft elastic film. The connection between the elastic rope 7 and the liquid storage bag 1 is located in the upper part of the liquid storage bag 1, so that when the lower part of the liquid storage bag 1 is carried (without drainage fluid), it can be inserted into the upper part of the liquid storage bag 1. Because the upper part of the liquid storage bag 1 is supported by rigid material, it can stably connect the elastic rope 7.

[0027] A drain valve 8 is connected to the bottom of the liquid storage bag 1 to drain the drainage liquid inside the liquid storage bag 1;

[0028] The upper half of the liquid storage bag 1 has an inspection port on the front, and the inner wall of the inspection port is fixed with an inspection panel 12 by screws. The inspection panel 12 and the inspection port are detachable for replacing the drainage bag 5 inside the liquid storage bag 1.

[0029] A handle 10 is fixedly installed on the back of the upper half of the liquid storage bag 1 to facilitate the user to carry the liquid storage bag 1. An exhaust port 11 is provided on the right side of the upper half of the liquid storage bag 1 to expel excess air from the liquid storage bag 1.

[0030] The usage process of the anti-backflow negative pressure drainage bag provided by this utility model is as follows:

[0031] Working principle: When in use, after pinching the drainage tube 2, the air inside the elastic airbag 4 is squeezed into the drainage bag 5 by compressing the elastic airbag 4. The increased air in the drainage bag 5 opens the opening at the bottom of the drainage bag 5. Then, after releasing the elastic airbag 4, the elastic airbag 4 draws the air out of the drainage bag 5. The opening at the bottom of the drainage bag 5 closes under the pull of external force and external pressure difference, while the drainage tube 2 draws the drainage fluid into the drainage bag 5. Continue to pinch the drainage tube 2, and then squeeze the elastic airbag 4 to squeeze air into the drainage bag 5. As the air enters, it opens the opening at the bottom of the drainage bag 5 again, and the drainage fluid flows from the opening into the storage bag 1. Then, open the drain valve 8 to discharge the fluid.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. An anti-reflux negative pressure drainage bag, comprising a liquid storage bag (1), a drainage tube (2), an exhaust tube (3), an elastic air bag (4), and a drainage bag (5), characterized in that: The top inner wall of the liquid storage bag (1) is fixedly provided with a connecting assembly (9) which is in communication with the top opening of the drainage bag (5), the bottom end of the drainage tube (2) and the exhaust tube (3) extends into the drainage bag (5), the drainage bag (5) is fused by two PVC films, the two PVC films are not connected at the bottom center of the drainage bag (5), the left and right corners of the bottom of the drainage bag (5) is fixedly provided with a connecting ring (6), the connecting ring (6) is tied with an elastic rope (7), the end of the elastic rope (7) away from the connecting ring (6) is fixedly connected with the inner wall of the liquid storage bag (1), the end of the exhaust tube (3) away from the drainage bag (5) is provided with an elastic air bag (4).

2. The anti-reflux negative pressure drainage bag according to claim 1, characterized in that: The connecting assembly (9) comprises a top panel frame (901) which is fixedly installed on the top inner wall of the liquid storage bag (1), the inner side of the top panel frame (901) is fixedly provided with a sealing panel (904), the drainage tube (2) and the exhaust tube (3) pass through the sealing panel (904), and the outer wall of the drainage tube (2) and the exhaust tube (3) is fixedly connected with the sealing panel (904), the bottom of the top panel frame (901) is fixedly provided with an inner support ring (902) and an outer clamping ring (903), the inner support ring (902) supports at the top opening of the drainage bag (5), and the outer clamping ring (903) is sleeved on the top of the drainage bag (5).

3. The anti-reflux negative pressure drainage bag according to claim 1, characterized in that: The upper half of the liquid storage bag (1) is made of hard plastic material, the lower half of the liquid storage bag (1) is made of soft elastic film, and the connecting part of the elastic rope (7) and the liquid storage bag (1) is located in the upper half of the liquid storage bag (1).

4. The anti-reflux negative pressure drainage bag according to claim 1, characterized in that: The bottom of the liquid storage bag (1) is provided with a sewage valve (8).

5. The anti-reflux negative pressure drainage bag according to claim 1, characterized in that: The front surface of the upper half of the liquid storage bag (1) is provided with an access hole, and the inner wall of the access hole is fixedly provided with an access panel (12) through screws.

6. The anti-reflux negative pressure wound drainage bag according to claim 1, characterized in that: The back surface of the upper half of the liquid storage bag (1) is fixedly provided with a handle (10), and the right side of the upper half of the liquid storage bag (1) is provided with an exhaust port (11).

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