P

Inventor

CHANG ZHAOHUA

CN10 patents
⚠️ This page may combine multiple inventors who share the name “CHANG ZHAOHUA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CRYOMEDICAL SCIENCES INC

3 patents
US5520682AMay 28, 1996

Cryosurgical instrument with vent means and method using same

CRYOMEDICAL SCIENCES INC463 citations98
US5254116AOct 19, 1993

Cryosurgical instrument with vent holes and method using same

CRYOMEDICAL SCIENCES INC278 citations97
US5400602AMar 28, 1995

Cryogenic transport hose

CRYOMEDICAL SCIENCES INC146 citations94

ACCU TARGET MEDIPHARMA SHANGHAI CO LTD

2 patents
US12213719B2Feb 4, 2025

Cryoadhesion apparatus

ACCU TARGET MEDIPHARMA SHANGHAI CO LTD0 citations48
US12245801B2Mar 11, 2025

Adjustable cryoablation needle

ACCU TARGET MEDIPHARMA SHANGHAI CO LTD0 citations43

ACCUTARGET MEDIPHARMA SHANGHAI CO LTD

2 patents
US12484948B2Dec 2, 2025

Flow regulating assembly and flexible cryoprobe with adjustable flow

ACCUTARGET MEDIPHARMA SHANGHAI CO LTD0 citations45
US11679239B2Jun 20, 2023

Double-layer cryogenic inflatable balloon

ACCUTARGET MEDIPHARMA SHANGHAI CO LTD0 citations45

SHANGHAI MICROPORT EP MEDTECH CO LTD

1 patent
US12239355B2Mar 4, 2025

Balloon catheter and ablation system

SHANGHAI MICROPORT EP MEDTECH CO LTD0 citations46

LI JUNFEI

1 patent
US9226994B2Jan 5, 2016

Intervention medical device and preparation thereof

LI JUNFEI0 citations43

SHANGHAI MICROPORT ROTAPACE MEDTECH CO LTD

1 patent
US12551231B2Feb 17, 2026

Driving device and rotary grinding apparatus

SHANGHAI MICROPORT ROTAPACE MEDTECH CO LTD0 citations38