CN201692482U - One-way drainage double-J tube - Google Patents

Abstract

The utility model discloses a one-way drainage double-J tube, which comprises a main body. A pair of valves are fixedly connected with the inner-circle surface of the main body closing to the bladder along the radial direction; the front end of the valve bends towards the flowing direction of medium; the two valves are symmetrical to each other relative to the axis of the main body in a closing way; the radial clearance between the two valves forms a medium channel; through arranging valves in the main body, the valves open when the medium flows downwards; the valves close when medium flows backwards; therefore, a one-way circulation valve structure is formed; the drainage is not affected; the anti-flowing-backwards effect is good; the structure is simple, and the using is easy.

Description

Unidirectional drain double J pipe

Technical field

This utility model relates to a kind of medical apparatus and instruments, particularly a kind of unidirectional drain double J pipe.

Background technology

Double J pipe claims two pigtails again, curls because of two ends, and every end is similar to pigtail and gains the name.Because its support and interior drainage, can remove the transient obstruction that ureter inflammation, edema cause, prevent postoperative wound leakage of urine and stricture of ureter.Double J pipe generally adopts materials such as polyurethane to make, and ageing resistance is strong, and histocompatibility is good, can reduce the stimulation to ureter and bladder, and indwelling time is long, the longlyest reaches 12 months.Therefore, double J pipe is widely used when the disease of treatment urinary system.But, because the present double J pipe that uses, it is the double take-off effect, so on actual clinical, the situation that the ubiquity urine is backflowed, such as when bladder pressure increases, urine can drain into kidney along double J pipe, thereby cause pathological changes such as upper urinary tract infection and hydronephrosis, cause renal function injury.

If can design a kind of structure of similar check valve for double J pipe, do not needing external pressure or only needing very little pressure just can make urine guide bladder into from renal pelvis, even and under bigger pressure, can not introduce renal pelvis by bladder, thereby make double J pipe only play unidirectional drainage, reduce the risk that infection takes place.Simultaneously, the structure of device also should be suitable for keeping somewhere for a long time in patient's body, does not increase the patient suffering.

Therefore, need a kind of double J pipe, only play unidirectional drainage, when not influencing its normal drainage, can prevent effectively that urine from backflowing from bladder.

The utility model content

In view of this, this utility model provides a kind of unidirectional drain double J pipe, only plays unidirectional drainage, when not influencing its normal drainage, can prevent effectively that urine from backflowing from bladder.

The unidirectional drain double J pipe of this utility model, comprise body, the internal circular surfaces of described body is radially fixedly connected to be provided with a pair of valve, the valve front end is to the bending of media flow direction, two valves are symmetrical arranged with respect to body axis in closeable mode, and the radial clearance between two valves forms medium channel.

Further, the thickness of described valve radially increases from inside to outside gradually along body;

Further, the embedded metal rack that is provided with of described valve, described metal rack is made by memorial alloy;

Further, the width of described medium channel is the 1/3-1/2 of pipe diameter;

Further, axially be provided with at least two pairs of valves along body.

The beneficial effects of the utility model: by valve is set in body, valve opens when the medium following current, and valve is closed when medium backflows, form the one-way flow valve arrangement, neither influence drain, have good anti-reflux effect again, and simple in structure, be easy to use.

Description of drawings

Below in conjunction with the drawings and specific embodiments this utility model is further described.

Fig. 1 is a structural representation of the present utility model;

Structural representation of the present utility model when Fig. 2 is adverse current;

Fig. 3 is that the A-A of Fig. 1 is to cutaway view;

Fig. 4 is that the B-B of Fig. 2 is to cutaway view.

The specific embodiment

Fig. 1 is a structural representation of the present utility model; Structural representation of the present utility model when Fig. 2 is adverse current; Fig. 3 is that the A-A of Fig. 1 is to cutaway view; Fig. 4 is that the B-B of Fig. 2 is to cutaway view.As shown in the figure: the unidirectional drain double J pipe of present embodiment, comprise body 1, body adopts polyurethane to make the one-tail or two-tail double J pipe, the internal circular surfaces of described body 1 is radially fixedly connected to be provided with a pair of valve 2, valve is made by the elastic matrix of good springiness, elastic matrix can be by politef, polyurethane, materials such as medical silica-gel are made, good springiness, good forming effect, valve 2 front ends are to the bending of media flow direction, two valves 2 are symmetrical arranged with respect to body axis in closeable mode, and described closeable mode is meant lobe under the medium effect, and two valves can be fitted mutually with the passage sealing of body; Radial clearance between two valves 2 forms medium channel 3, keeps the opening of two valves when the medium following current, and medium promotion valve is fitted to axis when medium counter flow, with the passage sealing, stops medium to backflow.

In the present embodiment, the thickness of described valve 2 radially increases from inside to outside gradually along body, makes the supporting degree of fixed part better, and front end is also easier to be crooked under the media flow effect.

In the present embodiment, the described valve 2 embedded metal racks 4 that are provided with, described metal rack 4 is made by memorial alloy, metal rack surrounds frame along valve sheet outline, and the setting reinforcement identical with the arch flexibility, form network structure, can better support valve and improve styling, be convenient to valve and restore to the original state fast.

In the present embodiment, the width of described medium channel 3 is the 1/3-1/2 of pipe diameter, and valve is stayed open under normal conditions, does not influence ureteral normal drain, but rapid closing when backflowing, and be difficult for being washed open by medium.

In the present embodiment, axially be provided with at least two pairs of valves, be preferably two, a plurality of valves are set prevent valve failure, play multiple safety effect along body 1.

Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (5)

1. unidirectional drain double J pipe, comprise body (1), it is characterized in that: the radially fixedly connected a pair of valve (2) that is provided with of the internal circular surfaces of described body (1), valve (2) front end is to the bending of media flow direction, two valves (2) are symmetrical arranged with respect to body axis in closeable mode, and the radial clearance between two valves (2) forms medium channel (3).

2. anti-reflux support tube of ureter according to claim 1 is characterized in that: the thickness of described valve (2) radially increases from inside to outside gradually along body.

3. anti-reflux support tube of ureter according to claim 2 is characterized in that: the embedded metal rack (4) that is provided with of described valve (2), described metal rack (4) is made by memorial alloy.

4. anti-reflux support tube of ureter according to claim 3 is characterized in that: the width of described medium channel (3) is the 1/3-1/2 of pipe diameter.

5. anti-reflux support tube of ureter according to claim 4 is characterized in that: axially be provided with at least two pairs of valves along body (1).

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