Ureteral stent device

Abstract

The invention discloses a ureteral stent device which comprises an ureteral stent tube and an urethral catheter, wherein a pull line of the ureteral stent tube comprises a magnetic adsorption section and an elastic section for ensuring the length of the pull line to be less than the length from the tail part of a stent tube body to an urethral orifice of a patient after the ureteral stent tube is implanted into the body of the patient when the elastic section in a freely expanded state; the elastic section is an elastic silk thread; the elastic section is arranged between the stent tube body and the magnetic adsorption section; the magnetic adsorption section is a silk thread with interrupted iron cores; the urethral catheter comprises an outer sheath and an inner core; the inner core is sleeved in the outer sheath in a slideable mode; the inner surface of the head part of the outer sheath and the outer surface of the inner core are surrounded into a pull line fixing cavity; and a magnetic part is arranged at the position of the inner core, close to the head part of the inner core. Compared with the existing pull line, in the using process of the ureteral stent device provided by the invention, the pull line is totally retained in the body of the patient and cannot be stained by outside dirts, so that the patient cannot be infected by pollution to the pull line and the patient also cannot feel uncomfortable due to a thread end exposed out of the body of the patient.

Description

technical field [0001] The invention relates to the field of medical instruments, and more specifically, relates to a ureter stent device. Background technique [0002] A ureteral stent is a medical device in the form of a long, thin tube. When the ureter is obstructed by stones, scar stenosis, tumor, etc., a ureteral stent can be implanted in the patient to support the ureter so that urine can drain from the kidney to the bladder. At the same time, ureteral surgery (including ureteroscopy, lithotripsy, and open ureteral surgery) and renal pelvis surgery (eg, pyelolithotomy, pelvis plasticity, percutaneous nephrolithotomy, etc.) routinely require placement of ureteral stents. At present, there is no ureteral stent that can be permanently placed in the body. After a period of use, it is necessary to remove the ureteral stent through an invasive operation, usually by cystoscopy. Although cystoscopic operation is not a major operation, it will bring great pain to the patient,...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a ureteral stent device, on the premise of realizing the function of the existing ureteral stent tube, it solves the problem that the pulling wire of the existing ureteral stent tube is easily contaminated with dirt, causing infection and causing discomfort to the patient

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