CN211659034U

CN211659034U - Anti-reflux catheter with valve

Info

Publication number: CN211659034U
Application number: CN201922168054.XU
Authority: CN
Inventors: 张杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-13
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a take anti-reflux catheter of valve, including the pipe body, pipe body and urine discharge end pipe intercommunication, urine discharge end pipe is connected with urine discharge bag, and the intraductal one-way valve that is equipped with opening direction orientation urine discharge bag that is equipped with between one-way valve and the urine discharge bag prevents that the urine from flowing into the runner of pipe body against the contrary and opening the piece. Through set up one-way valve structure on the pipe body among this technical scheme, when the urine flows out, one-way valve is automatic to be opened, when the urine backward flow, opens the piece through setting up the flow, closes the passageway that the urine flows against the current, avoids the urine to flow against the current.

Description

Anti-reflux catheter with valve

Technical Field

The utility model relates to the technical field of medical apparatus equipment, in particular to a backflow-preventing catheter with a valve.

Background

Catheterization is a common clinical procedure, and after catheterization, a urine bag is generally required to be placed below the level of the bladder of a human body to prevent urine from flowing back to the bladder. However, in clinic, patients often raise the urine bag above the level of the bladder when walking, which leads to urine backflow and infection.

Based on the above, a valvular anti-reflux catheter is researched and designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a: aiming at one of the technical problems, the catheter body is provided with a one-way valve and a flow channel opening piece, and the one-way valve is automatically opened when urine flows out of a urinary catheter; when urine flows back from the urine bag, the flow passage is closed by the flow passage starting piece, and the one-way valve is closed, so that the urine is prevented from flowing reversely, and the problem of infection caused by the urine countercurrent in clinic is solved.

In order to realize the purpose, the utility model discloses a technical scheme is:

the utility model provides a take catheter against current of valve, includes the pipe body, and the pipe body communicates with urine discharge end pipe, and urine discharge end pipe is connected with urine discharge bag, and the intraductal one-way valve that is equipped with opening direction orientation urine discharge bag that is equipped with of urine discharge end is equipped with the runner that prevents urine backflow into the pipe body between one-way valve and the urine discharge bag and opens the piece.

Further, when the one-way valve is in an open state, a valve cavity is formed in the central area of the one-way valve.

Further, the runner opening piece comprises a valve seat in close contact with the urine discharge end pipe, a hollow channel is arranged in the central area of the valve seat, a movable valve core matched with the valve cavity in shape is arranged in the hollow channel, the movable valve core is connected with an elastic piece, one end, close to the urine discharge bag, of the elastic piece is connected with a movable cross rod, the diameter, away from one end of the urine discharge bag, of the hollow channel is smaller than that of one end, close to the urine discharge bag, of the hollow channel, and the length of the movable cross rod is smaller than that of one end, close to the urine discharge bag, of the hollow channel and larger than that of one end, away from the.

Further, the elastic part is connected with the movable cross rod through a connecting rod, and the connecting rod is perpendicular to the movable cross rod.

Further, when the movable valve core is positioned in the valve cavity, a cavity is arranged between the movable cross rod and the end part of the movable valve core close to the urine discharge bag.

Further, the cavity increases in proper order from keeping away from urine drain bag one end to being close to the liquid flow direction length of urine drain bag one end, and the length that the disk seat is close to urine drain bag tip is greater than the length of removal crossbeam.

Further, when the movable valve cavity is in an open state, the length of the movable cross rod is larger than the diameter of the valve cavity.

Furthermore, the catheter body is provided with a balloon, one end of the catheter body, which is close to the urine discharge bag, is provided with a balloon inflation cavity, and the balloon inflation cavity is communicated with the balloon through a connecting pipe positioned inside the catheter body.

Furthermore, a urine inlet is arranged at the other end of the catheter body, which is connected with the end where the urine discharge bag is located.

Compared with the prior art, the utility model has the advantages of:

according to the technical scheme, the catheter body is provided with the one-way valve structure, when urine flows out, the one-way valve is automatically opened, and the urine flows out of the bladder to the urine discharge bag; when urine flows back, the passage for urine to flow back is closed by arranging the flow passage opening piece, so that the urine is prevented from flowing back to the bladder to cause corresponding infection.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the middle flow passage opening member of the present invention;

FIG. 3 is a schematic view of the one-way valve in an open state;

FIG. 4 is a schematic view of the one-way valve in a closed position;

in the figure: 1-catheter body, 2-balloon inflation cavity, 3-urine inlet, 4-balloon, 5-connecting pipe, 6-urine discharge end pipe, 7-urine discharge bag, 8-one-way valve, 81-valve cavity, 9-flow channel opening piece, 91-cavity, 92-movable valve core, 93-elastic piece, 94-connecting rod and 95-movable cross rod.

Detailed Description

The present invention will be further explained below.

Example 1:

referring to fig. 1, 2, 3, 4, a backflow-preventing catheter with a valve comprises a catheter body 1, the catheter body 1 is communicated with a urine discharge end pipe 6, the urine discharge end pipe 6 is connected with a urine discharge bag 7, a one-way valve 8 with an opening direction facing the urine discharge bag 7 is arranged in the urine discharge end pipe 6, and a flow channel opening piece 9 for preventing urine from flowing back into the catheter body 1 is arranged between the one-way valve 8 and the urine discharge bag 7.

In the embodiment, the main structural component for realizing the anti-reflux catheter is a one-way valve 8 structure arranged on the catheter body 1, the one-way valve 8 is a telescopic component with certain elasticity, and the specific structure can be formed by surrounding a three-valve or two-valve or multi-valve structure and enclosing a circular structural component in a natural state; when urine flows from the bladder to the urine discharge end pipe 6, under the impact of the urine, the one-way valve 8 expands from the central area to the peripheral area of the edge to form a structure with a valve cavity at the center, and the valve cavity is a passage for the urine to flow from the catheter body to the urine discharge bag 7 through the urine discharge end pipe 6.

The specific structure of the one-way valve 8 can be composed of four arc sheet structures which are all in 90-degree arc center angles, the arc sheet is in a 90-degree fan-shaped structure, the arc surface of the arc sheet is connected with the inner surface of the urine discharge end pipe 6, and the arc sheet is an elastic sheet.

Urine gets into catheter body 1, flows to one-way valve 8, and under the promotion of the effort of urine itself, one-way valve 8 is the open mode, and one cavity is formed to one-way valve 8's central zone, and simultaneously, runner opener 9 opens, and urine flows to urine discharge bag 7.

When urine flows reversely from the urine discharge bag 7, the urine firstly passes through the flow channel opening piece 9, the flow channel opening piece 9 is closed, at the moment, no urine flows reversely to the one-way valve 8, and the one-way valve 8 is in a natural closing state due to no corresponding external force action, so that the aim of preventing the urine from flowing reversely is fulfilled.

The flow path activating member 9 in this embodiment can also be a valve structure known to those skilled in the art for controlling the open or closed state of the flow path of the catheter body 1.

The catheter body 1 in this embodiment is of a hollow tube structure, and when a ureter is inserted, one end of the catheter body 1 is located in the bladder, and the other end of the catheter body 1 is connected with the urine discharge bag 7, so that urine in the bladder can be discharged into the urine discharge bag 7, wherein the urine discharge bag 7 is a urine collection bag commonly used in clinic.

Other structures and operation principles related to the present embodiment are well known to those skilled in the art and will not be described in detail.

Example 2:

as further defined in the present embodiment based on embodiment 1, when the one-way valve 8 is in the open state, a central region of the one-way valve 8 forms a valve cavity 81. In the embodiment 1, the structure of the one-way valve 8 has been described, the opening direction of the one-way valve 8 is toward the direction of the urine flowing to the urine drainage bag 7, when the urine flows from the bladder to the urine drainage bag 7, the central area of the one-way valve 8 forms a valve cavity 81 by the liquid pushing force of the urine, the urine can flow to the corresponding collection bag through the valve cavity 81, and the flow channel opener 9 is in an open state, wherein the valve cavity 81 can be circular.

Example 3:

the present embodiment is based on the above embodiments and prefers the structure of the flow opening member 9, the flow opening member 9 includes a valve seat in close contact with the urine discharge end tube 6, a hollow passage is provided in the central region of the valve seat, a movable valve core 92 adapted to the shape of the valve cavity 81 is provided in the hollow passage, the movable valve core 92 is connected with an elastic member 93, one end of the elastic member 93 close to the urine discharge bag 7 is connected with a movable cross bar 95, the diameter of one end of the hollow passage far from the urine discharge bag 7 is smaller than the diameter of one end of the hollow passage close to the urine discharge bag 7, and the length of the movable cross bar 95 is smaller than the diameter of one end of the hollow passage close to the urine discharge bag 7 and is larger than the diameter of one end of the hollow passage far from.

The specific structure of the flow channel opening member 9 in this embodiment includes a valve seat, a movable valve core 92, an elastic member 93, and a movable cross rod 95, the specific structure of the valve seat is a structural member having a hollow cavity region at the center and located in the conduit body 1 and having a circumferential valve wall, and the valve seat is tightly connected with the inner surface of the conduit body 1, and the valve seat and the inner surface of the conduit body 1 cannot move relative to each other, specifically, may be fixedly connected; a movable valve core 92 is arranged at one end of the hollow channel of the valve seat, which is close to the one-way valve 8, the specific structure of the movable valve core 92 can be spherical, when the one-way valve 8 is in an open state, part of the structural area of the movable valve core 92 can be accommodated in the valve cavity 81 and can not pass through the valve cavity 81.

The movable valve core 92 is connected with the elastic member 93, and the other end of the elastic member 93 is connected with the movable cross bar 95, so that the integrated structure formed by connecting the movable valve core 92, the elastic member 93 and the movable cross bar 95 can move in the central area of the valve seat, and the moving range is limited by the diameter of the central area.

The diameter of one end of the hollow passage of the valve seat, which is far away from the urine discharge bag 7, is smaller than that of one end of the hollow passage, which is close to the urine discharge bag 7, namely the diameter in the central area of the hollow passage is gradually increased from the normal urine inlet to the normal urine outlet of the valve seat; set up the length that removes horizontal pole 95 simultaneously and be less than the diameter that the hollow passage is close to urine discharge bag 7 one end and be greater than the diameter that the hollow passage kept away from urine discharge bag one end, so can realize when the urine backward flow, remove horizontal pole 95 and can remove in the hollow passage of disk seat, and owing to the specification setting to removing the horizontal pole, can block up the hollow passage of disk seat when removing the horizontal pole and removing a position to avoid the urine to flow from the center channel of disk seat.

The elastic member 93 is connected to a movable cross bar 95 by a connecting rod 94, and the connecting rod 94 and the movable cross bar 95 are perpendicular to each other.

The connecting rod 94 may be a conventional connecting member structure, and the elastic member 93 may be a spring structure, so as to avoid the influence of urine on the spring, an anti-corrosion surface layer operation may be performed on the surface of the existing spring structure, for example, the surface is provided with an existing anti-corrosion layer, so that the elasticity can be realized as well; the specific structure of the movable cross bar 95 may be a structure with the same shape as the central area of the valve seat, and may be a circular sheet structure.

When the movable valve core 92 is located in the valve cavity 81, a cavity 91 is formed between the movable cross bar 95 and the end of the movable valve core 92 close to the urine discharge bag 7, i.e., the movable cross bar 95 can move in the cavity 91, and the width of the cavity 91 is greater than the length of the movable cross bar 95, i.e., the diameter of the cavity 91 is greater than the diameter of the movable cross bar 95. When urine enters the one-way valve 8 from the catheter body 1, the urine passes through the valve cavity 81 of the one-way valve 8, then the urine passes through the gap between the movable valve core 92 and the elastic piece 93 and pushes the movable cross rod 95 to move forwards, when the movable cross rod 95 moves into the cavity 91, the movable cross rod 95 cannot block the channel of the cavity 91, and therefore, when the urine normally flows, the one-way valve 8 and the flow starting piece 9 are opened.

The cavity 91 is increased in sequence from one end far away from the urine discharge bag 7 to the longitudinal length close to one end of the urine discharge bag 7, and is greater than the length of the movable cross rod 95, so that the realization can be realized, when the movable cross rod moves to one side close to the valve cavity 81, the flow channel of urine flowing from the urine discharge bag 7 into the bladder is closed, when the movable cross rod 95 moves to the tail end of the cavity of the valve seat close to the urine discharge bag, the urine can smoothly flow from the bladder into the urine discharge bag 7, when the movable valve cavity 81 is in an open state, the length of the movable cross rod 95 is greater than the diameter of the valve cavity 81, namely, the flow channel opening part is opened, and the urine can flow through from the gap between the movable cross rod 95 and the urine.

When urine is discharged bag 7 from urine and is flowed against the current, in the cavity of urine entering disk seat, the urine can promote the removal that removes horizontal pole 95, when removing horizontal pole 95 and removing a certain position, because the diameter size of removing horizontal pole 95 is less than the regional cavity diameter size of disk seat center, removes horizontal pole 95 and can block up the central passage region of disk seat, and at this moment, the urine can't flow back to in the pipe body 1, and one-way valve 8 is the closed condition this moment.

The movable cross bar 95 described in this embodiment is a disk-shaped structure, and has the same shape as the cavity structure of the valve seat, but has different specifications.

Other structures and operating principles thereof involved in the present embodiment are well known to those skilled in the art and will not be described in detail.

Example 4:

the embodiment is further limited on the basis of the embodiment, the catheter body 1 is provided with the balloon 4, one end, close to the urine discharge bag 7, of the catheter body 1 is provided with the balloon inflation cavity 2, and the balloon inflation cavity 2 is communicated with the balloon 4 through the connecting pipe 5 positioned inside the catheter body 1.

The balloon 4 is mainly used for inflating the balloon 4 through the balloon inflation cavity 2 after the urinary catheter is inserted into the bladder, so that the balloon 2 is in an expansion state and can be placed after the catheter is inserted to avoid falling off. The balloon inflation cavity 2 is communicated with the balloon 4 through a connecting pipe 5.

And the opposite end of the catheter body 1 connected with the urine discharge bag 7 is provided with a urine inlet 3, and the urine inlet 3 is specifically structured as an opening communicated with the internal channel of the catheter body 1.

The connection position of the balloon inflation cavity 2 and the catheter body 1 in the embodiment can be the same as the connection position of the catheter body 1 and the urine discharge end pipe 6, and the end part of the balloon inflation cavity 2, the catheter body 1 and the urine discharge end pipe 6 is connected to form a three-way pipe structure.

Other structures and common general knowledge related to the structures in the embodiment are well known to those skilled in the art and will not be described in detail.

The ureter that above-mentioned embodiment was directed against can be two-way among the prior art, structures such as tee bend catheter, and the one-way valve, the runner starting part setting position all consider to close the runner of urine in from urine discharge bag to bladder. The structure for realizing the equivalent function is all within the protection scope of the utility model.

The anti-reflux catheter with valve provided by the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; while the invention has been described in terms of specific embodiments and applications, it will be apparent to those skilled in the art that numerous variations and modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The backflow-preventing catheter with the valve is characterized by comprising a catheter body (1), wherein the catheter body (1) is communicated with a urine discharge end pipe (6), the urine discharge end pipe (6) is connected with a urine discharge bag (7), a one-way valve (8) with an opening direction facing the urine discharge bag (7) is arranged in the urine discharge end pipe (6), and a flow channel opening piece (9) for preventing urine from flowing into the catheter body (1) reversely is arranged between the one-way valve (8) and the urine discharge bag (7).

2. The valved anti-reflux catheter according to claim 1, wherein: when the one-way valve (8) is in an open state, a valve cavity (81) is formed in the central area of the one-way valve (8).

3. The valved anti-reflux catheter according to claim 2, wherein: the flow channel opening part (9) comprises a valve seat which is tightly contacted with the urine discharge end pipe (6), a hollow channel is arranged in the central area of the valve seat, a movable valve core (92) which is matched with the valve cavity (81) in shape is arranged in the hollow channel, the movable valve core (92) is connected with an elastic part (93), and one end, close to the urine discharge bag (7), of the elastic part (93) is connected with a movable cross rod (95); the diameter that the one end of urine drainage bag (7) was kept away from to cavity passageway is less than the diameter that is close to urine drainage bag (7) one end, and the length that removes horizontal pole (95) is less than the diameter that cavity passageway is close to urine drainage bag (7) one end and is greater than the diameter that cavity passageway kept away from urine drainage bag (7) one end.

4. The valved anti-reflux catheter according to claim 3, wherein: the elastic piece (93) is connected with the movable cross rod (95) through a connecting rod (94), and the connecting rod (94) is perpendicular to the movable cross rod (95).

5. The valved anti-reflux catheter according to claim 4, wherein: when the movable valve core (92) is positioned in the valve cavity (81), a cavity (91) is arranged between the movable cross rod (95) and the end part of the valve seat close to the urine drainage bag (7).

6. The valved anti-reflux catheter according to claim 5, wherein: the length of the cavity (91) from one end far away from the urine discharge bag (7) to the liquid flow direction close to one end of the urine discharge bag (7) is sequentially increased, and the length of the valve seat close to the end part of the urine discharge bag (7) is greater than that of the movable cross rod (95).

7. The valved anti-reflux catheter according to claim 6, wherein: when the movable valve cavity (81) is in an open state, the length of the movable cross rod (95) is larger than the diameter of the valve cavity (81).

8. The valved anti-reflux catheter according to claim 1, wherein: the catheter is characterized in that a balloon (4) is arranged on the catheter body (1), one end, close to the urine discharge bag (7), of the catheter body (1) is connected with a balloon inflation cavity (2), and the balloon inflation cavity (2) is communicated with the balloon (4) through a connecting pipe (5) located inside the catheter body (1).

9. The valved anti-reflux catheter according to claim 1, wherein: the other end of the catheter body (1) at the end connected with the urine discharge bag (7) is provided with a urine inlet (3).