CN204158869U - Double helical form anti-reflux support tube of ureter - Google Patents

Abstract

The utility model discloses a double-helix anti-reflux ureteral stent tube, which comprises a ureteral segment, and the two ends of the ureteral segment are respectively connected with a renal pelvis segment and a bladder segment, and both the renal pelvis segment and the bladder segment are used for resisting bladder urine. The helix that drains fluid back into the renal pelvis. The utility model utilizes the property of the long path of the spiral structure to strengthen the blocking effect on the urine reflux from the bladder through the stent tube to the renal pelvis, and the long path can effectively dissipate the reflux energy of the urine, so that the spiral structure Compared with the ordinary semicircular structure, the structural renal pelvis and bladder segments can effectively slow down the force and speed of urine flowing along the pipeline, and enhance the effect of resisting urinary reflux in the bladder and renal pelvis. The utility model does not affect the urine drainage of the renal pelvis, but also has a good anti-reflux effect, has a simple structure and is easy to use.

Description

Double helix anti-reflux ureteral stent

technical field

The utility model relates to the technical field of medical instruments, and is a double-helix anti-reflux ureteral stent tube which is used in urology clinics and has dual functions of drainage of urine and anti-reflux. the

Background technique

Ureteral stent is a catheter placed in the ureter for drainage of urine and prevention of ureteral stenosis, etc. The ureteral stent has dual functions of internal stent and drainage, which can effectively relieve upper urinary tract obstruction and protect kidney function. Ureteral stents are widely used in the treatment of diseases of the urinary system. However, the currently used stent tubes are two-way drainage. In fact, urine reflux is common in clinical practice. For example, when the bladder pressure increases to a certain level, urine can flow back along the core and outside the wall of the ureteral stent tube. To the renal pelvis, thus causing upper urinary tract infection and hydronephrosis and other lesions, impairing renal function. At present, the double J tubes used at home and abroad are usually made of polyurethane, which has shape memory function. There is a small hole, which is placed in the ureter, and its internal stent is used for drainage, that is, it is used to expand the ureter, so that through the peristalsis of the ureter, stones and urine can be discharged into the bladder along the inside and outside of the tube. Due to the small diameter of the core of the ureteral stent tube, the manufacturing process of the one-way drainage device inside the ureteral stent tube is difficult, and the single helical stent tube in the middle of the ureter increases the space around the ureteral stent tube, which in turn aggravates the urinary bladder-renal reflux and is easy Interfering with urinary drainage from the renal pelvis. At present, there is no feasible anti-reflux ureteral stent that can be widely used clinically. Therefore, a new type of ureteral stent is needed, which can neither affect the drainage of urine from the renal pelvis into the bladder, but also effectively slow down the flow of urine from the bladder. Reflux to the renal pelvis, reducing the risk of infection. the

Contents of the invention

The utility model provides a double-helix anti-reflux ureteral stent tube, which can effectively resist the reflux of urine from the bladder to the renal pelvis without affecting its normal drainage function.

The utility model adopts the following technical solutions:

A double-helix anti-reflux ureteral stent tube, which includes a ureteral segment, and the two ends of the ureteral segment are respectively connected with a renal pelvis segment and a bladder segment, and both the renal pelvis segment and the bladder segment are used to resist the reflux of bladder urine to the renal pelvis the helical structure.

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

(1) The utility model utilizes the property of the long path of the spiral structure to strengthen the blocking effect on the urine reflux from the bladder through the stent tube to the renal pelvis. The long path can effectively dissipate the reflux energy of the urine, thereby Compared with the common semicircular structure, the renal pelvis segment and the bladder segment of the spiral structure can effectively slow down the force and speed of urine flowing along the pipeline, and enhance the effect of resisting urinary reflux in the bladder and renal pelvis.

(2) The urine drainage reinforcement section with side holes on the tube wall further resists the reflux urine flow between the stent tube and the ureteral tube wall, so as to achieve a good anti-reflux effect without affecting the urine drainage of the renal pelvis. The utility model has a simple structure, is easy to use, and is beneficial to urine drainage.

Description of drawings

The following figures further describe the utility model in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of the utility model.

Detailed ways

A double-helix anti-reflux ureteral stent tube, comprising a ureteral segment 2, the two ends of the ureteral segment 2 are respectively connected with a renal pelvis segment 1 and a bladder segment 4, and both the renal pelvis segment 1 and the bladder segment 4 are used to resist bladder Urine refluxes to the helical structure of the renal pelvis. In this embodiment, a urine drainage strengthening section with side holes 3 on the tube wall is connected in series between the ureteral section 2 and the bladder section 4 .

Fig. 1 is a structural schematic diagram of the present utility model. The stent tube is inserted in a manner similar to that of a common ureteral stent tube. A guide wire is inserted through the operating cavity of the cystoscope, and the ureteral stent tube is straightened and placed outside the guide wire. At this time, the ureter The stent tube renal pelvis segment 1 and bladder segment 4 were straightened, sent into the corresponding parts along the guide wire, the guide wire was pulled out, the stent tube returned to its original shape, and the two ends were respectively hung on the renal pelvis and bladder segment, and the renal pelvis segment 1 and bladder segment 4 resumed a spiral structure . When the bladder is in the urine storage period, the urine from the renal pelvis can be continuously drained into the bladder along the ureteral stent tube. When the bladder urinates and contracts, the two double helix structures effectively resist the reflux of urine from the bladder to the ureter in the core of the stent tube. There is no side hole in the upper part of the ureter, and at the same time, it can effectively resist the urine reflux outside the stent tube, so as to achieve better anti-reflux purpose.

Claims (2)

1. A double-helix anti-reflux ureteral stent tube, comprising a ureteral segment (2), characterized in that a renal pelvis segment (1) and a bladder segment (4) are respectively connected to the two ends of the ureteral segment (2), and , the renal pelvis segment (1) and the bladder segment (4) are helical structures designed to counteract reflux of urine from the bladder to the renal pelvis. 2. The double-helix anti-reflux ureteral stent according to claim 1, characterized in that, there is a side hole (3) on the tube wall connected in series between the ureter (2) and the bladder (4). Enhanced section for urine drainage.