A urethral drug delivery catheter specifically designed for five-cavity prostatectomy

By designing a dedicated urethral drug injection catheter for five-cavity prostatectomy, the problems of insufficient hemostasis and incomplete bladder irrigation after prostatectomy have been solved, achieving precise hemostasis and multifunctional integrated treatment, reducing the risk of tissue damage and improving treatment outcomes.

CN224421697UActive Publication Date: 2026-06-30ZHANJIANG STAR ENTERPRISE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHANJIANG STAR ENTERPRISE
Filing Date
2025-07-29
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Current post-prostatectomy catheters cannot achieve targeted compression hemostasis, lack urethral drug delivery channels, have limited bladder irrigation functions, and have uncontrollable balloon pressure, resulting in poor hemostasis, insufficient anti-fibrotic treatment, and a high risk of tissue damage.

Method used

A five-cavity urethral drug infusion catheter for prostatectomy has been designed, comprising a urination port, a urethral drug infusion port, a first balloon for fixation, a second balloon for urethral closure, a third balloon for wound compression, and an optional bladder irrigation cavity. It features precise hemostasis, drug infusion, and efficient bladder irrigation. The balloon pressure is controllable, and the surface of the third balloon is coated with a heparin sustained-release layer to prevent adhesion.

Benefits of technology

It achieves precise wound compression hemostasis, multifunctional integrated treatment, reduces the risk of tissue damage, improves hemostasis and long-term efficacy of anti-fibrotic treatment, and ensures operational safety.

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Abstract

This invention discloses a five-cavity urethral infusion catheter specifically designed for prostatectomy. The catheter includes a tube body with five independent cavities: a urination cavity for draining urine, distally connected to a drainage orifice; a urethral infusion cavity for infusing medication, distally connected to a urethral infusion orifice; a first balloon inflation cavity, distally connected to a first balloon for fixation in the bladder trigone; a second balloon inflation cavity, distally connected to a second balloon for urethral closure; and a third balloon inflation cavity, distally connected to a third balloon for compressing the prostatectomy wound. The third balloon, located between the first and second balloons, is apple / pear shaped and, when inflated, conforms to the prostatectomy wound. This invention, through its innovative three-balloon design and five-cavity structure, solves problems such as incomplete postoperative hemostasis and difficulty in medication infusion. The specially designed apple / pear shaped balloon can precisely compress the wound, and in conjunction with the medication infusion channels, significantly improves surgical outcomes.
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