CN116350869A

CN116350869A - Anti-reflux ureteral stent tube and use method thereof

Info

Publication number: CN116350869A
Application number: CN202310374827.8A
Authority: CN
Inventors: 马斌斌; 黄滔; 许永之; 赵晨晖; 杨安卿; 夏宇; 刘溪; 余忠伟
Original assignee: Ruinjin Hospital Affiliated to Shanghai Jiaotong University School of Medicine Co Ltd Luwan Branch
Current assignee: Ruinjin Hospital Affiliated to Shanghai Jiaotong University School of Medicine Co Ltd Luwan Branch
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-06-30

Abstract

The invention discloses an anti-reflux ureteral stent tube, which comprises a ureteral stent, a first curled section and a second curled section, wherein the first curled section and the second curled section are arranged at two ends of the ureteral stent, the ureteral stent is formed by combining a plurality of drainage tubes and a hose body in a melting way, and the drainage tubes are formed by combining a drainage inner layer, an elastic net melted on one surface of the drainage inner layer, a drainage outer layer melted on the surface of the elastic net and a blocking liner tube fixed in an inner cavity of the drainage inner layer. According to the invention, the tube body is provided with the hose body between the drainage tubes, so that the bending degree can be flexibly adjusted when the drainage tubes are implanted into the urethra of a patient, the damage to the urethral mucosa caused by the influence of the hardness of the patient during the implantation between the ureters can be avoided, the injury to the urethra of the patient is prevented, meanwhile, in the urine drainage process, the upper opening diameter of the retaining tube body is large, the lower opening diameter of the retaining tube body is small, the urethra can only flow from a large caliber to a small caliber, and the urine backflow can be effectively prevented.

Description

Anti-reflux ureteral stent tube and use method thereof

Technical Field

The invention relates to the technical field of ureteral stents, in particular to an anti-reflux ureteral stent tube and a use method thereof.

Background

The ureteral stent tube is bent at two ends to form a J shape, has the functions of fixing the stent tube in place and preventing movement, is also called a double J tube or a double-pigtail catheter, is suitable for various operations such as urinary calculus, hydronephrosis, ureter stenosis and dilatation, bladder replacement, kidney transplantation and the like, and has the functions of draining urine, preventing calculus and residue aggregation and blocking and preventing ureter stenosis by surgical operation.

A memory metal controllable self-discharging ureteral stent tube shown in the publication number of CN 217265749U. The ureteral stent comprises a ureteral stent body, a silk thread and a memory metal silk thread fixing and releasing piece, wherein the ureteral stent body comprises a ureteral stent bladder section, a ureteral stent ureter section and a ureteral stent renal pelvis section, one end of the silk thread is fixed on the ureteral stent bladder section and is wound on the ureteral stent bladder section in an annular mode, the other end of the silk thread is connected with the memory metal silk thread fixing and releasing piece, and the memory metal silk thread fixing and releasing piece is fixedly sleeved on a vesicoureter in a bending mode.

In the device, although the ureteral stent tube does not need to be pulled out by using a cystoscope, and the pulling wire is not required to be exposed to the external urethral orifice for a long time, the memory metal form change can be started in a mode of temperature, microwave and the like according to the time selected by a doctor, so that the wire at the tail end of the ureteral stent tube is released, the wire is discharged out of the urethra after being released, the purpose of pulling out the ureteral stent tube is achieved by pulling the wire, but when the urethral stent is implanted into the urethra of a patient in the use process of the urethral stent, the urethral mucosa is easily damaged due to certain fixation fastness of the tube body, and the condition that urine flows back easily occurs in the tube body is avoided.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides an anti-reflux ureteral stent tube, which solves the problems and solves the problems proposed by the background technology.

(II) technical scheme

In order to achieve the above purpose, the present invention provides the following technical solutions: the ureteral stent comprises a ureteral stent, a first curling section and a second curling section, wherein the first curling section and the second curling section are arranged at two ends of the ureteral stent, the ureteral stent is formed by combining a plurality of drainage tubes and a hose body in a melting way, the drainage tubes are formed by combining a drainage inner layer, an elastic net melted on one surface of the drainage inner layer, a drainage outer layer melted on the surface of the elastic net and a blocking liner tube fixed in an inner cavity of the drainage inner layer, and a smooth layer is smeared on the surface of the drainage outer layer;

the hose body is formed by combining a soft adhesive layer, a soft adhesive outer layer fused on the surface of the soft adhesive layer and a soft adhesive inner layer fused in an inner cavity of the soft adhesive layer, and two ends of the soft adhesive layer are respectively in fusion connection with the drainage tube;

the surface of the first curling section is provided with a plurality of first drainage holes, and the surface of the second curling section is provided with a plurality of second drainage holes.

Preferably, the smooth layer is made of medical hydrophilic paint.

Preferably, the diameter of the upper opening end of the blocking liner tube is larger than that of the lower opening end, and the blocking liner tube is used for preventing urine from flowing back.

Preferably, the inner cavities of the drainage tube, the first curling section and the second curling section are communicated.

Preferably, the first drainage inner layer and the first drainage outer layer are made of polyurethane materials.

Preferably, the first curling section and the second curling section are made of medical silica gel materials.

Preferably, the upper hole is communicated with the lower hole, and the lower hole is connected with an inner cavity of the curling section.

The use method of the ureteral stent tube for preventing countercurrent comprises the following steps:

s1: firstly, checking whether the drainage tube, the hose body, the first curling section and the second curling section can be normally used and the surface cleanliness;

s2: after the determination, the first winding section and the drainage tube are implanted at the position of the urethra, and the smooth layer on the surface of the drainage tube can generate massage sense of the soft layer to slide in when being implanted into the urethra, so that the influence of the firmness of the drainage tube is avoided, the friction of the drainage tube to urethral mucosa is reduced, the mucosa is prevented from being implanted and pulled by the drainage tube, the protection of the mucosa can be enhanced when the urethra urinates, and meanwhile, the hydrophilic smooth layer can enhance the contact with the urine in the urethra, so that the drainage tube easily slides in and slides out of the urethra, and the adhesion force with the urethral mucosa is reduced;

s3: the first winding section is implanted into the kidney, the second winding section is implanted into the bladder, urine of the kidney is poured into the drainage tube through the opening at one end of the winding section and the first drainage hole, and then discharged into the bladder through the second drainage hole at the second winding section, and discharged into the body through the bladder of a patient.

(III) beneficial effects

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the tube body is arranged between the drainage tubes through the hose body, so that the bending degree can be flexibly adjusted when the drainage tubes are implanted into the urethra of a patient, the damage to the urethral mucosa caused by the influence of the hardness of the patient during the implantation between the ureters can be avoided, the damage to the urethra of the patient is prevented, meanwhile, in the urine drainage process, the upper opening diameter of the lining tube is large, the lower opening diameter of the lining tube is small through the lining tube arranged in the drainage inner layer, the urethra can only flow from a large caliber to a small caliber, and the urine backflow can be effectively prevented.

2. In the invention, the smooth layer is smeared on the surface of the drainage tube body, and the smooth layer is hydrophilic coating, so that the drainage tube can be enhanced to be contacted with urine, can slide in the urethra more easily, is convenient for implantation operation of the drainage tube, and meanwhile, the inner layer and the outer layer of the drainage tube are made of polyurethane materials, so that the tube body has high breaking force, high elongation and better temperature sensitivity.

3. According to the urine drainage device, the drainage hole I arranged at the first position of the curling section is matched with the opening at the first extension end of the curling section, so that the urine drainage quantity can be increased, meanwhile, the diameter of the outer side of the hole is larger than that of the inner side of the hole, the urine drainage device has better anti-blocking performance, and urine can be prevented from flowing out from the inner diameter to the outer diameter.

Drawings

Fig. 1 is a schematic diagram of a front view structure of a ureteral stent for preventing backflow in the present invention;

FIG. 2 is a schematic side view of a drainage tube according to the present invention;

FIG. 3 is a schematic view of the cross section of the drainage inner layer I and the baffle liner tube in the invention;

FIG. 4 is a schematic view of the hose body in cross section according to the present invention;

FIG. 5 is a schematic view of a side view, cross section and bottom view of a drainage hole according to the present invention.

In the figure: 1. a drainage tube; 101. drainage inner layer I; 102. an elastic net; 103. a drainage outer layer; 104. a smooth layer; 105. a liner blocking tube; 2. a hose body; 201. a soft adhesive layer; 202. a soft rubber outer layer; 203. a soft rubber inner layer; 3. a first winding section; 4. drainage holes I; 401. an upper hole; 402. a lower hole; 5. a second winding section; 6. and a drainage hole II.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-5, an anti-reflux ureteral stent tube comprises a ureteral stent, a first curling section 3 and a second curling section 5 which are arranged at two ends of the ureteral stent, wherein the ureteral stent is formed by combining a plurality of drainage tubes 1 and a hose body 2 in a melting way, the drainage tubes 1 are formed by combining a drainage inner layer 101, an elastic net 102 melted on the surface of the first drainage inner layer 101, a drainage outer layer 103 melted on the surface of the elastic net 102 and a blocking liner tube 105 fixed in an inner cavity of the drainage inner layer 101, and a smooth layer 104 is smeared on the surface of the drainage outer layer 103;

the hose body 2 is formed by combining a soft adhesive layer 201, a soft adhesive outer layer 202 fused on the surface of the soft adhesive layer 201 and a soft adhesive inner layer 203 fused in the inner cavity of the soft adhesive layer 201, and two ends of the soft adhesive layer 201 are respectively in fusion connection with the drainage tube 1;

a plurality of drainage holes I4 are formed in the surface of the first curling section I3, and a plurality of drainage holes II 6 are formed in the surface of the second curling section II 5;

the drainage hole I4 is formed by combining an upper hole 401 and a lower hole 402, the upper hole 401 is arranged at the outer side and is used for draining urine, the urine is led into the lower hole 402 and then is sent into the curling section I3, and due to the smaller diameter of the lower hole 402, when the urine flows in the curling section I3, the upper hole 401 can only flow from the upper hole 401 to the lower hole 402 when the urine is drained;

when the drainage tube 1 is implanted into the urethra, the end surfaces of the inner layer and the outer layer of the hose body 2 are chamfer surfaces, so that the drainage tube 1 can rotate at a certain angle on the outer side of the hose body 2, and the drainage tube 1 can adjust a certain camber in the urethra and is more fit with the urethra.

Referring to fig. 2, the smoothing layer 104 is made of a medical hydrophilic coating, which can enhance contact with urine, so that the drainage tube can slide in the urethra more easily, and the implantation operation of the drainage tube is facilitated.

Referring to fig. 3, the diameter of the upper opening end of the liner tube 105 is larger than that of the lower opening end, so as to prevent urine from flowing back, so that the urethra can only flow from a large caliber to a small caliber, and urine can be effectively prevented from flowing back.

Referring to fig. 1, the inner cavities of the drainage tube 1, the first curling section 3 and the second curling section 5 are communicated, so that urine can flow into the drainage tube 1 from the first curling section 3, and the drainage tube 1 discharges the urine from the second curling section 5.

Referring to fig. 2, the first drainage layer 101 and the outer drainage layer 103 are made of polyurethane, so that the tube body has high breaking force, high elongation and good temperature sensitivity.

Referring to fig. 1, the first curling section 3 and the second curling section 5 are made of medical silica gel materials.

Referring to fig. 5, the upper hole 401 is communicated with the lower hole 402, and the lower hole 402 is connected with the inner cavity of the curling section 3.

The working method of the ureteral stent tube for preventing countercurrent comprises the following steps of:

s1: firstly, checking whether the drainage tube 1, the hose body 2, the first curling section 3 and the second curling section 5 can be used normally or not and the surface of the drainage tube is clean;

s2: after the determination, the urethral position is aligned to be implanted with the curled section I3 and the drainage tube 1, the smooth layer 104 on the surface layer of the drainage tube 1 can generate soft massage sense to slide in when being implanted into the urethra, so that the influence of the firmness of the drainage tube 1 is avoided, the friction of the drainage tube 1 on urethral mucosa is reduced, the mucosa is prevented from being damaged by implantation of the drainage tube 1, the protection of the mucosa can be enhanced when the urethra is urinated, meanwhile, the hydrophilic smooth layer 104 can enhance the contact with the urine in the urethra, so that the drainage tube 1 easily slides in and slides out of the urethra, and the adhesion force with the urethral mucosa is reduced;

s3: the first winding section 3 is implanted into the kidney, the second winding section 5 is implanted into the bladder, the urine of the kidney is poured into the drainage tube 1 through the opening at the 3 end of the first winding section and the first drainage hole 4, and then discharged into the bladder through the second drainage hole 6 at the 5 end of the second winding section, and discharged into the body through the bladder of the patient.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an prevent ureteral stent pipe against current, includes ureteral stent and locates the section of curling one (3), the section of curling two (5) at ureteral stent both ends, its characterized in that: the ureteral stent is formed by combining a plurality of drainage tubes (1) and a hose body (2) in a melting way, wherein the drainage tubes (1) are formed by combining a drainage inner layer (101), an elastic net (102) melted on the surface of the first drainage inner layer (101), a drainage outer layer (103) melted on the surface of the elastic net (102) and a blocking liner tube (105) fixed in the inner cavity of the drainage inner layer (101), and a smooth layer (104) is smeared on the surface of the drainage outer layer (103);

the hose body (2) is formed by combining a soft adhesive layer (201), a soft adhesive outer layer (202) fused on the surface of the soft adhesive layer (201) and a soft adhesive inner layer (203) fused in an inner cavity of the soft adhesive layer (201), and two ends of the soft adhesive layer (201) are respectively in fusion connection with the drainage tube (1);

a plurality of drainage holes I (4) are formed in the surface of the first curling section I (3), and a plurality of drainage holes II (6) are formed in the surface of the second curling section II (5);

the first drainage hole (4) is formed by combining an upper hole (401) and a lower hole (402).

2. The anti-reflux ureteral stent according to claim 1, characterized in that: the smooth layer (104) is made of medical hydrophilic paint.

3. The anti-reflux ureteral stent according to claim 1, characterized in that: the diameter of the upper opening end of the blocking liner tube (105) is larger than that of the lower opening end, and the blocking liner tube is used for preventing urine from flowing back.

4. The anti-reflux ureteral stent according to claim 1, characterized in that: the inner cavities of the drainage tube (1), the first curling section (3) and the second curling section (5) are communicated.

5. The anti-reflux ureteral stent according to claim 1, characterized in that: the drainage inner layer I (101) and the drainage outer layer 103 are made of polyurethane materials.

6. The anti-reflux ureteral stent according to claim 1, characterized in that: the first curling section (3) and the second curling section (5) are made of medical silica gel materials.

7. The anti-reflux ureteral stent according to claim 1, characterized in that: the upper hole (401) is communicated with the lower hole (402), and the lower hole (402) is connected with the inner cavity of the curling section I (3).

8. The use of an anti-reflux ureteral stent according to any of claims 1-7, characterized in that: the method comprises the following steps:

s1: firstly, checking whether the drainage tube (1), the hose body (2), the first curling section (3) and the second curling section (5) can be used normally or not and the surface of the drainage tube is clean;

s2: after the determination, the first winding section (3) and the drainage tube (1) are implanted at the position of the urethra, the smooth layer (104) on the surface layer of the drainage tube (1) can generate massage sense of a soft layer to slide in when being implanted into the urethra, the influence of the firmness of the drainage tube (1) is avoided, the friction of the drainage tube (1) on the urethral mucosa is reduced, the mucosa is prevented from being pulled by the implantation of the drainage tube (1), the protection of the mucosa can be enhanced when the urethra urinates, and meanwhile, the hydrophilic smooth layer (104) can enhance the contact with the urine in the urethra, so that the drainage tube (1) easily slides in and slides out of the urethra, and the adhesion force with the urethral mucosa is reduced;

s3: the first winding section (3) is implanted into the kidney, the second winding section (5) is implanted into the bladder, urine of the kidney is poured into the drainage tube (1) through the opening at the end of the first winding section (3) and the drainage hole (4), and then discharged into the bladder through the drainage hole (6) at the end of the second winding section (5), and discharged into the body through the bladder of a patient.