CN201752531U

CN201752531U - Unidirectional drainage ureter stent

Info

Publication number: CN201752531U
Application number: CN2010205094110U
Authority: CN
Inventors: 高宏飞; 阴津华; 王东文
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-25
Filing date: 2010-08-25
Publication date: 2011-03-02
Anticipated expiration: 2020-08-25

Abstract

A unidirectional drainage ureter stent is composed of the following components successively from top to bottom: a renal pelvis segment, a ureter segment, a ureter bladder connection segment and a bladder segment. A pipe of the ureter bladder connection segment is internally provided with a unidirectional drainage device which is a rectangular rubber flat tube with elasticity. An opening end of the unidirectional drainage device is supported to round and is fixed to the inner wall of the pipe of ureter bladder connection segment, and a closed end is provided at the side of the bladder segment. The upper pipe wall and the lower pipe wall are superposed and closed together. After the unidirectional drainage ureter stent of the utility model is correctly placed in the body, the urine can only be drained to the bladder through the renal pelvis and the ureter. The urine in the bladder can not reflux to the renal pelvis and the ureter. A defect of incapability of preventing urine reflux by the prior-art ureter stent is settled radically.

Description

Unidirectional drain ureter rack tube

Technical field

This utility model belongs to technical field of medical instruments, relates to a kind of ureter rack tube, particularly relates to a kind of ureter rack tube with unidirectional drain function.

Background technology

Ureter rack tube has support and auxiliary effect of going up the urinary tract urine drainage, it is Urology Surgery medical apparatus and instruments commonly used, in the diagnosis and treatment of kidney, ureter, bladder disease, be widely used, be applicable to the diagnosis and treatment of diseases such as renal calculus, ureteral calculus, hydronephrosis, stricture of ureter, renal transplantation, kidney and tumor of ureter.Ureter rack tube has support and interior drain dual function, inserts and can play drainage of urine behind the ureter, prevents the effect that stricture of ureter and adhesion are stopped up.Use ureter rack tube, the kidney aggregation system does not directly communicate with the external world, can avoid the caused hemorrhage and infection of kidney fistulation external drainage; And because the restriction and the discomfort of no drainage tube, the patient can early ambulation, favourable postoperative rehabilitation.

Though the application of ureter rack tube has improved success rate of operation, but, still can cause some complication behind the indwelling ureter rack tube, common has: reflux, put pipe back lumbago, hematuria, irritation sign of bladder, ureter rack tube calculus etc.Wherein, reflux is a major issue that needs to be resolved hurrily at present, has seriously limited the further raising of therapeutic effect.

The reason of reflux is that mainly ureter rack tube is a kind of conduit that can double take-off, in use, vesicoureteral anti-reflux mechanism disappears, when intravesical pressure during greater than renal pelvis and intra-ureteral pressure, the intravesical urine will inevitably take place backflow to ureter and renal pelvis.In addition, put pipe back urine constantly by drain, the renal pelvis ureters circular cone has lost full stimulation, causes ureteral peristalsis obviously to weaken or disappears, and this also makes the urine rate increase of backflowing.

The consequence of reflux is to cause the chance of kidney retrograde infection to increase, and when serious even life-threatening, has greatly destroyed therapeutic effect.Still not having effective solution at present at this problem, can only be the intravesical urine of indwelling catheter Tube Drain again after inserting ureter rack tube, and the conventional antibiotic that uses; Encourage patient to urinate after pulling out catheter more, make bladder be in hollow state; Avoid bladder excessive full and prevent that abdominal pressure from increasing; Use the antibiotic control infection when taking place to infect.But these ways can not fundamentally solve this difficult problem of reflux.

Summary of the invention

The purpose of this utility model provides a kind of unidirectional drain ureter rack tube, fundamentally to solve the reflux problem of existing ureter rack tube.After correctly keeping somewhere unidirectional drain ureter rack tube in body, urine can only be flowed to drain and enters bladder through single from renal pelvis and ureter by it, and intravesical urine can't be backflowed to renal pelvis and ureter through it.

Traditional ureter rack tube is the hollow conduit of a flexibility, from up to down form by renal pelvis section, ureter section, tubal bladder linkage section and bladder section four parts in turn, its renal pelvis section and bladder section are respectively the individual pen ring-type, ureter section and tubal bladder linkage section are all straight tube-like, and be equipped with on the catheter wall of renal pelvis section, ureter section, tubal bladder linkage section and bladder section a plurality of side openings with connecting tube inside and outside.Unidirectional drain ureter rack tube of the present utility model then is not establish side opening in tubal bladder linkage section part, and is provided with a unidirectional drainage system in the conduit of tubal bladder linkage section, remainder and the equal indifference of traditional ureter rack tube.

Described unidirectional drainage system is a rubber-like rectangle rubber flat tube, and its opening struts and is circle, is fixed on the pipe inner wall of tubal bladder linkage section, and closing end places bladder section side, and tube wall is overlapping closed together up and down.

Usually, the width of unidirectional drainage system equates with the catheter diameter of unidirectional drain ureter rack tube.

After unidirectional drainage system was installed, the urine drainage direction of ureter rack tube can only flow to the bladder section from renal pelvis section and ureter section, and is then obstructed in the other direction.When renal pelvis and intra-ureteral pressure during greater than intravesical pressure, the closing end that urine can strut unidirectional drainage system flows in the bladder, but when intravesical pressure during greater than renal pelvis and ureter internal pressure, closing end on the unidirectional drainage system is because external pressure can't strut greater than internal pressure, and intravesical urine can't be backflowed to renal pelvis and ureter.

When preventing intravesical pressure greater than renal pelvis and ureter internal pressure, the closing end of unidirectional drainage system is pressed to the ureter side from bladder side, causing can not the forward drain, need the pipe inner wall that is fixed on the tubal bladder linkage section more at least with unidirectional drainage system closing end on.

Because the closing end of unidirectional drainage system is a flat structure, usually, two end points of unidirectional drainage system closing end are separately fixed on the pipe inner wall of tubal bladder linkage section, make them can only opening and closing, can not move.

Unidirectional drain ureter rack tube of the present utility model has fundamentally solved the urine that can't stop that existing ureter rack tube exists and has been backflowed to renal pelvis and ureteral technological deficiency by bladder, after correctly keeping somewhere in body, urine is only allowed by it and is flowed to drain and enter bladder through single from renal pelvis and ureter, and intravesical urine can't be backflowed to renal pelvis and ureter through it.

Unidirectional drain ureter rack tube of the present utility model is except increasing a unidirectional drainage system in conduit, thereby reach the purpose of unidirectional drain, be better than outside the double take-off function of existing ureter rack tube, remainder all with existing ureter rack tube indifference, the effect that stricture of ureter and adhesion are stopped up is inserted and can play drainage of urine behind the ureter, prevented to the dual function that has support and interior drain equally; The kidney aggregation system does not directly communicate with the external world simultaneously, can avoid the caused hemorrhage and infection of kidney fistulation external drainage; And because of the restriction and the discomfort of no drainage tube, the patient can early ambulation, helps postoperative rehabilitation.

Description of drawings

Fig. 1 is the structural representation of the unidirectional drain ureter rack tube of this utility model;

Fig. 2 is the A-A cutaway view of unidirectional drainage system closing end Fig. 1 when opening;

Fig. 3 is the A-A cutaway view of unidirectional drainage system closing end Fig. 1 when closed.

The specific embodiment

The structure of unidirectional drain ureter rack tube is the flexible hollow conduit of a quality soft smooth as shown in Figure 1, from up to down is made up of renal pelvis section 8, ureter section 7, tubal bladder linkage section 5 and bladder section 1 four parts in turn.

Renal pelvis section 8 and bladder section 1 are respectively the individual pen ring-type, are beneficial to be separately fixed in renal pelvic cavity and the bladder cavity, thereby avoid the whole piece conduit to take place excessively to move up and down and to cause catheter position unusual.Ureter section 7 and tubal bladder linkage section 5 are all straight tube-like.Unobstructed no inner matter in the catheter lumen of renal pelvis section 8, ureter section 7 and bladder section 1, and each section all have outside a plurality of side opening 6 connecting tube intracavity, is beneficial to the adequate drainage of urine.

Tubal bladder linkage section 5 is about about 8cm, and side opening is not set on it, is provided with a unidirectional drainage system 3 in the conduit of tubal bladder linkage section 5.Unidirectional drainage system 3 is the softish rectangle rubber of a rubber-like flat tube, and tube wall is overlapping closed together up and down for it, potential lacuna that can strut of inner formation.About the about 1cm of the length of unidirectional drainage system 3, width equals the catheter diameter of unidirectional drain ureter rack tube, its opening 4 is positioned at renal pelvis section side, strut and be circle, be fixed on the pipe inner wall of tubal bladder linkage section 5, closing end 2 places bladder section side, and two-end-point is separately fixed on the pipe inner wall of tubal bladder linkage section 5.

After this unidirectional drain ureter rack tube is correctly kept somewhere in body, renal pelvis section 8 and bladder section 1 are fixed on respectively in renal pelvic cavity and the bladder cavity, ureter section 7 is positioned at ureter, tubal bladder linkage section 5 is positioned at the wall inner segment that ureter enters bladder, the region of anatomy of the ureter anti-reflux physiological function of promptly bringing into normal play.When renal pelvis and intra-ureteral pressure during greater than intravesical pressure, the closing end 2 that urine can strut unidirectional drainage system 3 flows in the bladders, as Fig. 2; But when intravesical pressure during greater than renal pelvis and intra-ureteral pressure, the closing end 2 of unidirectional drainage system 3 can't strut greater than internal pressure because of external pressure, and as Fig. 3, the result makes intravesical urine to backflow to renal pelvis and ureter.Simultaneously, do not establish side opening, guaranteed that urine can not backflow by side opening at tubal bladder linkage section 5.

Claims

1. unidirectional drain ureter rack tube, it is a flexible hollow conduit, from up to down in turn by renal pelvis section (8), ureter section (7), tubal bladder linkage section (5) and bladder section (1) four part are formed, renal pelvis section (8) and bladder section (1) are respectively the individual pen ring-type, ureter section (7) and tubal bladder linkage section (5) are all straight tube-like, it is characterized in that in the conduit of tubal bladder linkage section (5), being provided with a unidirectional drainage system (3), described unidirectional drainage system (3) is a rubber-like rectangle rubber flat tube, its opening (4) struts and is circle, be fixed on the pipe inner wall of tubal bladder linkage section (5), closing end (2) places bladder section (1) side, and tube wall is overlapping closed together up and down.

2. unidirectional drain ureter rack tube according to claim 1 is characterized in that on the pipe inner wall that is fixed on tubal bladder linkage section (5) more at least of described unidirectional drainage system (3) closing end (2).

3. unidirectional drain ureter rack tube according to claim 2 is characterized in that the two-end-point of described unidirectional drainage system (3) closing end (2) is separately fixed on the pipe inner wall of tubal bladder linkage section (5).

4. unidirectional drain ureter rack tube according to claim 1 is characterized in that the width of described unidirectional drainage system (3) equates with the catheter diameter of unidirectional drain ureter rack tube.

5. unidirectional drain ureter rack tube according to claim 1 is characterized in that being provided with a plurality of side openings (6) on the catheter wall of renal pelvis section (8), ureter section (7) and bladder section (1) at unidirectional drain ureter rack tube.