Drainage bag with backflow prevention function

Abstract

The utility model relates to an anti-backflow drainage bag which is provided with a bag body and a drainage tube, one end of the drainage tube extends into the bag body and is fixed at the top of the bag body, and the other end of the drainage tube is inserted into a position needing drainage; an anti-backflow assembly used for preventing liquid from flowing back is fixedly arranged in the drainage tube and comprises a fixing ring, a flexible sleeve and a pressed piece, the inner wall of the drainage tube is provided with an annular groove protruding outwards and allowing the fixing ring to be clamped in, the fixing ring is fixedly arranged in the annular groove, one end of the flexible sleeve is fixedly arranged on the fixing ring, and the other end of the flexible sleeve is fixedly arranged on the pressed piece. The other end of the flexible sleeve extends towards one side of the bag body, one end of the pressed piece is fixedly arranged on the outer wall of the flexible sleeve, the other end of the pressed piece extends towards the fixing ring, a first containing cavity allowing liquid to enter is formed between the pressed piece and the flexible sleeve, and the side, facing the bag body, of the flexible sleeve can be extruded to be closed after the liquid enters the first containing cavity. Liquid in the bag body can be prevented from flowing back to the body of a patient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drainage bag with anti -reflux. BACKGROUND

[0002] The commonly used drainage bag is disposable drainage bag, which is used to drain the blood oozing, effusion and the like in the body or the deep part of the local operation after the operation, and the end of the drainage tube is connected with a transparent plastic bag for containing the drained liquid; the drainage bag is also used in the life of the patient after the operation.

[0003] The bag body of the drainage bag can extrude the liquid in the bag body into the drainage tube after being extruded, the liquid in the drainage bag can contain bacteria or other pathogens, and the pathogens can enter the body after the liquid is extruded from the drainage bag into the body, so that the risk of infection is increased, and the pressure balance between the inside and outside of the body can be destroyed after the liquid is backflowed, so that the healing of the wound is affected or other complications are caused.

[0004] Therefore, a drainage bag capable of preventing the liquid in the bag body from backflowing is required. SUMMARY

[0005] The utility model discloses a kind of drainage bags with anti -reflux, which can prevent the liquid in the bag body from backflowing into the body of patient.

[0006] The technical scheme for achieving the utility model is as follows: the utility model has a bag body and a drainage tube, one end of the drainage tube extends into the bag body and is fixed at the top of the bag body, and the other end of the drainage tube is inserted into the position required for drainage;Characterized in that: an anti-backflow component for preventing liquid backflow is fixed inside the drainage tube, the anti-backflow component includes a fixing ring, a flexible sleeve and a pressure sheet, an annular groove is provided on the inner wall of the drainage tube and protrudes outward, the fixing ring is fixed in the annular groove, one end of the flexible sleeve is fixed on the fixing ring along the contour of the fixing ring, the other end of the flexible sleeve extends towards the side of the bag body, one end of the pressure sheet is fixed on the outer wall of the flexible sleeve, the other end of the pressure sheet extends towards the fixing ring, a first cavity is formed between the pressure sheet and the flexible sleeve for liquid to enter, and the side of the flexible sleeve towards the bag body can be extruded to form a closure after liquid enters the first cavity.

[0007] Further, the end of the flexible sleeve fixed on the fixing ring is in communication with the fixing ring, the diameter of the end of the flexible sleeve fixed on the fixing ring is greater than that of the end of the flexible sleeve extending towards the bag body, the side wall of the flexible sleeve extends along the extension direction of the fixing ring towards the bag body, and the middle part of the side wall of the flexible sleeve is recessed towards the middle of the flexible sleeve.

[0008] Further, the outer wall of the flexible sleeve is symmetrically provided with an extension part with the axis of the flexible sleeve as the center, the extension part separates the flexible sleeve into a left part and a right part, two groups of pressure receiving pieces are arranged on the left part and the right part of the flexible sleeve respectively, and the pressure receiving pieces are arranged close to the end of the flexible sleeve extending towards the bag.

[0009] Further, an auxiliary piece is further arranged on the left part and the right part of the flexible sleeve, one end of the auxiliary piece is arranged on the flexible sleeve, the other end of the auxiliary piece extends towards the fixing ring, a second cavity for the excess liquid is formed between the auxiliary piece and the flexible sleeve, and the middle part of the flexible sleeve can be closed after the excess liquid enters the second cavity.

[0010] Further, the drainage tube is further provided with a first buckle and a second buckle for limiting the fixing ring in the ring groove, the first buckle is arranged at the upper end of the ring groove and can be limited with the upper end of the fixing ring, the second buckle is arranged at the lower end of the ring groove and can be limited with the lower end of the fixing ring, and the fixing ring is limited in the ring groove through the limiting cooperation of the first buckle with the upper end of the fixing ring and the limiting cooperation of the second buckle with the lower end of the fixing ring.

[0011] Further, a sealing ring is arranged between the fixing ring and the ring groove, and the sealing ring is fixed in the ring groove through the contact of the outer wall with the ring groove and the contact of the inner wall with the fixing ring.

[0012] Further, the bottom of the bag is provided with a drainage port, and a cover is arranged on the drainage port to close the drainage port.

[0013] The utility model has the positive effect that (1) the anti-reflux assembly of the utility model includes a fixing ring, a flexible sleeve and pressure receiving pieces, the flexible sleeve is fixedly arranged on the fixing ring along the contour of the fixing ring, the pressure receiving pieces are fixedly arranged on the flexible sleeve, a first cavity for liquid is formed between the pressure receiving pieces and the flexible sleeve, and the side of the flexible sleeve towards the bag can be closed after being extruded when the liquid enters the first cavity,

[0014] (2) the side wall of the flexible sleeve of the utility model extends along the extension direction of the fixing ring towards the bag, and the middle part of the side wall of the flexible sleeve is recessed towards the middle part of the flexible sleeve, and the flexible sleeve can be more easily deformed when the liquid extrudes the flexible sleeve.

[0015] (3) the outer wall of the flexible sleeve of the utility model is symmetrically provided with an extension part with the axis of the flexible sleeve as the center, the extension part separates the flexible sleeve into a left part and a right part, two groups of pressure receiving pieces are arranged on the left part and the right part of the flexible sleeve respectively, and the flexible sleeve can be better closed when the liquid enters the first cavity and extrudes the flexible sleeve after being separated into the left part and the right part.

[0016] (4) The left part and the right part of the flexible sleeve are further provided with auxiliary sheets, one end of the auxiliary sheet is fixed on the flexible sleeve, the other end of the auxiliary sheet extends towards the fixing ring, and a second cavity for the excess liquid to enter is formed between the auxiliary sheet and the flexible sleeve; the second cavity can accommodate the excess liquid in the first cavity, process the excess liquid, and meanwhile the excess liquid can close the middle part of the flexible sleeve after entering the second cavity, thereby enhancing the anti-reflux effect.

[0017] (5) The fixing ring is limited in the ring groove through the limiting cooperation of the first buckle ring and the upper end of the fixing ring and the limiting cooperation of the second buckle ring and the lower end of the fixing ring, the fixing ring can be fixed in the drainage tube, and the anti-reflux effect is avoided from being lost due to falling in the middle of use.

[0018] (6) The fixing ring and the ring groove are provided with a sealing ring, the sealing ring is fixed in the ring groove through the contact of the outer wall and the ring groove and the contact of the inner wall and the fixing ring, liquid is avoided from passing through the ring groove, and the possibility of reflux is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to specific embodiments and in combination with the drawings, wherein

[0020] Figure 1 It is a schematic view of the overall structure of the utility model;

[0021] Figure 2 It is Figure 1 It is a partial enlarged view of A in the figure;

[0022] Figure 3 It is a front view of the anti-reflux assembly of the utility model;

[0023] Figure 4 It is a side view of the anti-reflux assembly of the utility model;

[0024] Figure 5 It is a state diagram of the flexible sleeve closure of the anti-reflux assembly of the utility model. DETAILED DESCRIPTION

[0025] See Figures 1 to 5The utility model discloses a bag body 1 and drainage tube 2, one end of drainage tube 2 extends to the inside of bag body 1 and is fixed at the top of bag body 1, and the other end of drainage tube 2 is inserted into the position required to be drained, characterized by: the inside fixed of drainage tube 2 is equipped with the anti -reflux component 3 for preventing liquid reverse flow, and the anti -reflux component 3 includes fixed ring 31, flexible sleeve 32 and pressure sheet 33, the inner wall of drainage tube 2 is equipped with the ring groove 21 of the lateral convex that can be inserted in fixed ring 31, and fixed ring 31 is fixedly arranged in ring groove 21, one end of flexible sleeve 32 is fixedly arranged on fixed ring 31 along the contour of fixed ring 31, and the other end of flexible sleeve 32 extends towards the side of bag body 1, one end of pressure sheet 33 is fixedly arranged on the outer wall of flexible sleeve 32, and the other end of pressure sheet 33 extends towards fixed ring 31, and the first cavity 4 for liquid to enter is formed between pressure sheet 33 and flexible sleeve 32, and the side of flexible sleeve 32 towards bag body 1 can be extruded to form closure after liquid enters the first cavity 4.

[0026] The middle part of flexible sleeve 32 is hollow and is in communication with fixed ring 31, and fixed ring 31 and flexible sleeve 32 are combined to form a funnel shape that is large at the top and small at the bottom.

[0027] One end of flexible sleeve 32 fixedly arranged on fixed ring 31 is in communication with fixed ring 31, the diameter of one end of flexible sleeve 32 fixedly arranged on fixed ring 31 is greater than the diameter of the end of flexible sleeve 32 extending towards bag body 1, the side wall of flexible sleeve 32 extends along the extension direction of fixed ring 31 towards bag body 1, and the middle part of the side wall of flexible sleeve 32 is recessed towards the middle of flexible sleeve 32.

[0028] An extension 6 is symmetrically arranged on the outer wall of flexible sleeve 32 with the axis of flexible sleeve 32 as the center, the extension 6 separates flexible sleeve 32 into a left part and a right part, pressure sheet 33 is provided in two groups, and the two groups of pressure sheet 33 are fixedly arranged on the left part and the right part of flexible sleeve 32 respectively, and the end of pressure sheet 33 close to the end of flexible sleeve 32 extending towards bag body 1 is arranged.

[0029] Auxiliary sheet 7 is also fixedly arranged on the left part and the right part of flexible sleeve 32, one end of auxiliary sheet 7 is fixedly arranged on flexible sleeve 32, the other end of auxiliary sheet 7 extends towards fixed ring 31, the second cavity 8 for excess liquid to enter is formed between auxiliary sheet 7 and flexible sleeve 32, and the middle part of flexible sleeve 32 can form closure after excess liquid enters the second cavity 8.

[0030] The first cavity 4 and the second cavity 8 are in communication with the space in the tube of drainage tube 2.

[0031] The drainage tube 2 is further provided with a first buckle ring 22 and a second buckle ring 23 for limiting the fixing ring 31 in the ring groove 21, the first buckle ring 22 is arranged at the upper end of the ring groove 21 and can limit the upper end of the fixing ring 31, the second buckle ring 23 is arranged at the lower end of the ring groove 21 and can limit the lower end of the fixing ring 31, and the fixing ring 31 is limited in the ring groove 21 by the limiting cooperation of the first buckle ring 22 and the upper end of the fixing ring 31 and the limiting cooperation of the second buckle ring 23 and the lower end of the fixing ring 31.

[0032] The sealing ring 9 is arranged between the fixing ring 31 and the ring groove 21 and is fixed in the ring groove 21 by the contact of the outer wall with the ring groove 21 and the contact of the inner wall with the fixing ring 31.

[0033] The bottom of the bag body 1 is provided with a drainage port, and the drainage port is provided with a cover 10 for closing the drainage port.

[0034] The working principle of the utility model is as follows: when the liquid in the bag body 1 flows reversely, the liquid first enters the first cavity 4 from the drainage tube 2, the liquid is accumulated in the first cavity 4, the excess liquid in the first cavity 4 enters the second cavity 8, and the liquid in the first cavity 4 extrudes the flexible sleeve 32 under the extrusion of the subsequent liquid, so as to drive the flexible sleeve 32 to form closure towards one side of the bag body 1; after the flexible sleeve 32 forms closure towards one side of the bag body 1, the subsequent liquid extrudes the liquid in the second cavity 8 to pressurize the middle part of the flexible sleeve 32, and the middle part of the flexible sleeve 32 forms closure under the extrusion of the liquid in the second cavity 8; the flexible sleeve 32 is closed under the extrusion of the liquid itself, the liquid is prevented from passing through the flexible sleeve 32, and the liquid is prevented from flowing reversely.

[0035] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only for specific embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A drainage bag with anti-reflux, comprising a bag body (1) and a drainage tube (2), one end of the drainage tube (2) extending into the bag body (1) and fixed at the top of the bag body (1), and the other end of the drainage tube (2) inserted into a position required for drainage; characterized in that: The inside of the drainage tube (2) is fixedly provided with an anti-backflow assembly (3) for preventing liquid backflow, the anti-backflow assembly (3) comprises a fixing ring (31), a flexible sleeve (32) and a pressure receiving piece (33), an annular groove (21) in which the fixing ring (31) can be clamped is provided on the inner wall of the drainage tube (2) and protrudes outward, the fixing ring (31) is fixedly arranged in the annular groove (21), one end of the flexible sleeve (32) is fixedly arranged on the fixing ring (31) along the contour of the fixing ring (31), the other end of the flexible sleeve (32) extends towards the bag body (1), one end of the pressure receiving piece (33) is fixedly arranged on the outer wall of the flexible sleeve (32), the other end of the pressure receiving piece (33) extends towards the fixing ring (31), a first cavity (4) for liquid to enter is formed between the pressure receiving piece (33) and the flexible sleeve (32), and the side of the flexible sleeve (32) towards the bag body (1) can be extruded to be closed after liquid enters the first cavity (4).

2. A drainage bag with anti-reflux according to claim 1, characterized in that: The one end of the flexible sleeve (32) fixedly arranged on the fixing ring (31) is in communication with the fixing ring (31), the diameter of the one end of the flexible sleeve (32) fixedly arranged on the fixing ring (31) is greater than that of the other end of the flexible sleeve (32) extending towards the bag body (1), and the side wall of the flexible sleeve (32) extends along the extension direction of the fixing ring (31) towards the bag body (1) and is recessed in the middle part of the side wall of the flexible sleeve (32) towards the middle of the flexible sleeve (32).

3. The anti-reflux drain bag according to claim 1, wherein: The outer wall of the flexible sleeve (32) is symmetrically provided with an extension part (6) with the axis of the flexible sleeve (32) as the center, the extension part (6) divides the flexible sleeve (32) into a left part and a right part, the pressure receiving piece (33) is provided in two groups, and the two groups of pressure receiving pieces (33) are fixedly arranged on the left part and the right part of the flexible sleeve (32) respectively, and the pressure receiving piece (33) is arranged close to the one end of the flexible sleeve (32) extending towards the bag body (1).

4. A drainage bag with anti-reflux according to claim 3, characterized in that: The left part and the right part of the flexible sleeve (32) are further fixedly provided with auxiliary pieces (7), one end of the auxiliary piece (7) is fixedly arranged on the flexible sleeve (32), the other end of the auxiliary piece (7) extends towards the fixing ring (31), a second cavity (8) for excess liquid to enter is formed between the auxiliary piece (7) and the flexible sleeve (32), and the middle part of the flexible sleeve (32) can be closed after the excess liquid enters the second cavity (8).

5. The anti-reflux drain bag according to claim 1, wherein: The drainage tube (2) is further fixedly provided with a first buckle (22) and a second buckle (23) for limiting the fixing ring (31) in the annular groove (21), the first buckle (22) is arranged at the upper end of the annular groove (21) and can form limiting cooperation with the upper end of the fixing ring (31), the second buckle (23) is arranged at the lower end of the annular groove (21) and can form limiting cooperation with the lower end of the fixing ring (31), and the fixing ring (31) is limited in the annular groove (21) through the limiting cooperation of the first buckle (22) with the upper end of the fixing ring (31) and the limiting cooperation of the second buckle (23) with the lower end of the fixing ring (31).

6. The anti-reflux drain bag according to claim 1, wherein: The sealing ring (9) is fixed in the ring groove (21) by the contact of the outer wall with the ring groove (21) and the contact of the inner wall with the fixed ring (31).

7. The anti-reflux drain bag according to claim 1, wherein: The bottom of the bag body (1) is provided with a liquid discharge port, and the liquid discharge port is provided with a cover (10) for closing the liquid discharge port.

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