4 results about "Urethral stent" patented technology

The application discloses a high-compliance temporary prostatic urethral stent with a cordless recovery system and belongs to the field of medical devices, which comprises a stent, a connecting sleeve is arranged on the stent, a guide wire is detachably arranged on the connecting sleeve, and a connecting line is arranged in the guide wire; a storage fixing sleeve is arranged on the outer side of the stent, the stent is stored in the storage fixing sleeve in an initial state; and a recovery system is further included, and the stent and the mechanical structure of the recovery system form a releasable locking cooperation in a recovery stage. The cordless magnetic recovery system is adopted to eradicate the pain and the risk of retrograde infection caused by the indwelling suture line; the magnetic-attraction mechanical double locking cooperation self-adaptive multi-claw probe realizes accurate capture under blind vision; the asymmetric cross-section wire is adopted for the stent body to improve the circumferential flexibility while providing sufficient radial support; and the flexible connecting anchor leaf can be self-adaptive to the asymmetric bladder neck dissection, can disperse stress and can avoid tissue stimulation and damage.

The utility model discloses a urethra stent tube, particularly relates to urethra stent tube technical field, including inner stent tube, outer stent tube no. 1 and outer stent tube no. 2, the both ends of inner stent tube take the shape of circle-shaped hook, the outer wall of both sides of inner stent tube is processed with a plurality of side hole no. 1, the outer wall of both sides of outer stent tube no. 1 is processed with a plurality of side hole no. A detachable waterproof film is arranged in the first outer support pipe, the bottom of the first outer support pipe is fixedly connected with an adapter, and the top of the second outer support pipe is fixedly connected with an adapter. By combining the inner stent tube, the first outer stent tube and the second outer stent tube, the inner stent tube plays a role in urine drainage and avoids dysuria or urinary retention caused by surgery and anesthesia in the early stage of a post-operation, the first outer stent tube can support the urethra and prevent urethra wound collapse and adhesion, and the first outer stent tube has no stimulation effect on the posterior urethra and the bladder, so that the urethra can be prevented from being damaged. Meanwhile, exudate at the wound can be discharged conveniently, and the second outer support tube can be connected with a drainage bag for use.

This application provides a method and system for assessing the migration risk of a urethral stent, comprising: S1: acquiring medical imaging data of a patient's urethra, constructing a three-dimensional anatomical model, and calibrating a set of anatomical regions; S2: acquiring a parametric model of the urethral stent, simulating its placement within the three-dimensional anatomical model, and constructing an initial contact state; S3: acquiring the dynamic response results of the urethral stent under voiding-related loads; S4: acquiring a set of characteristic parameters characterizing the migration trend of the urethral stent, based at least on the three-dimensional anatomical model, the initial contact state, and the dynamic response results; S5: calculating a risk index set for each region within the set of anatomical regions based on the characteristic parameter set, and assessing the migration risk of the urethral stent after placement, based at least on the risk index set. This improves the efficiency and accuracy of urethral stent selection and post-placement migration risk assessment.

The utility model discloses an anti-displacement urethral stent, and relates to the technical field of urethral stents, the anti-displacement urethral stent comprises a stent main body and a through hole, the middle part of the stent main body is provided with the through hole, and two sides of the stent main body are provided with auxiliary mechanisms. When the anti-displacement urethral stent is used, the input end and the output end are fixed to the two sides of the stent body through the auxiliary mechanism, and the input end and the output end are both conical, so that the front end of the stent is rounder and smoother through the input end, friction and damage to urethral tissue are reduced, and the anti-displacement urethral stent is more convenient to use. The urethral stent can more easily pass through a narrow or bent part of the urethra, so that the pain and discomfort of a patient can be relieved; and the output end is used for assisting the urine to be smoothly discharged, so that the urine is prevented from being accumulated between the stent and the urethral wall, and the effects of conveniently inserting the stent to reduce stimulation and assisting urination are achieved when the urethral stent is used.