Plugging device capable of injecting hydrogel for ureteroscope lithotripsy

Abstract

The invention relates to a plugging device capable of injecting hydrogel for ureteroscope lithotripsy, comprising a syringe, a conduit, a semipermeable membrane, a hydrogel and a metal guidance wire; the semipermeable membrane is wrapped inside the outer surface of the conduit to form a capsular plugging capsule; the plugging capsule is in sealing connection with the conduit; the side wall of the conduit arranged inside the plugging capsule is provided with at least one through hole; one end of the conduit is sealed; the opening end of the conduit is communicated with the syringe; and the sealing end of the conduit is connected to the metal guidance wire. The plugging device used for the ureteroscope lithotripsy can prevent calculus inside the ureter from going up, provides convenience to surgery, reduces tissue damage and has high success rate in plugging broken stones.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an injectable hydrogel occluder for ureteroscopic lithotripsy. Background technique [0002] Urinary system calculus is a common disease in urology. Stones can be found in any part of the kidney, ureter, bladder and urethra, and kidney and ureter stones are the most common. Stone obstruction often leads to damage to renal function, and can cause renal failure in severe cases. The treatment of kidney stones is mainly based on open surgery and drug-dissolving stone treatment, and 95% of stones can be resolved by ureteroscopic lithotripsy. [0003] At present, ureteroscopic lithotripsy has become the best treatment for ureteral calculi, with the advantages of less surgical trauma and faster recovery. However, ureteroscopic lithotripsy also has certain shortcomings. On the one hand, it is necessary to flush water retrogradely during the operation to ensure a clear surgical ...

AI Technical Summary

Problems solved by technology

But this kind of occluder has certain disadvantages, because the urethra is relatively narrow, after the occluder is placed, if the lithotripsy is also put in through the urethra, it will easily get stuck or cannot be put in, and the trauma will be larger

In addition, the small umbrella formed when the occluder is opened will have pores, which cannot completely block the gravel, and the price is very expensive, and the cost is very high

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