Title:
PUNCTURE NEEDLE ASSEMBLY AND PUNCTURE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/228003
Kind Code:
A1
Abstract:
A puncture needle assembly (1000) and a puncture system (100). The puncture needle assembly (1000) comprises a needle seat (1100) and a needle body (1200); the needle seat (1100) is provided with an axially-perforating through-channel, and at least a part of the side wall of the channel is configured to be an electric conductor (1110); the proximal end of the needle body (1200) extends into the channel and electrically connects to the electrical conductor (1100). The puncture system (100) comprises the puncture needle assembly (1000) and a dilator (2000), and the dilator (2000) comprises a dilation catheter (2100) and an elastic conductive assembly (2200) selectively provided on the dilation catheter (2100). When the distal end of the needle body (1200) is concealed in the dilation catheter (2100), the distal end of the needle body (1200) can still be electrically conductive with external blood by means of the elastic conductive assembly (2200). The puncture needle assembly (1000) and the puncture system (100) have the advantages of being safe and convenient to use and high in reliability.
Inventors:
ZHA FEIXIANG (CN)
LIANG BO (CN)
SUN YIYONG (CN)
SONG YUWEN (CN)
LIU MENGYAO (CN)
LIANG BO (CN)
SUN YIYONG (CN)
SONG YUWEN (CN)
LIU MENGYAO (CN)
Application Number:
PCT/CN2021/092514
Publication Date:
November 18, 2021
Filing Date:
May 08, 2021
Export Citation:
Assignee:
SHANGHAI MICROPORT EP MEDTECH CO LTD (CN)
International Classes:
A61B17/34; A61B34/20
Foreign References:
| CN107693089A | 2018-02-16 | |||
| CN111557713A | 2020-08-21 | |||
| CN107280714A | 2017-10-24 | |||
| CN110547857A | 2019-12-10 | |||
| CN106618685A | 2017-05-10 | |||
| US20190350569A1 | 2019-11-21 |
Other References:
See also references of EP 4137074A4
Attorney, Agent or Firm:
SHANGHAI SAVVY IP AGENCY CO., LTD. (CN)
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