Title:
PAINLESS SLOW-EXPANSION PUNCTURE NEEDLE AND USE METHOD
Document Type and Number:
WIPO Patent Application WO/2022/217837
Kind Code:
A1
Abstract:
A painless slow-expansion puncture needle and a use method. The painless slow-expansion puncture needle comprises: a puncture needle (10) having a diameter not greater than 0.3 mm; and a guidewire (20) having a first end (201) and a second end (202), the diameter of the first end (201) being greater than that of the second end (202), the second end (202) being connected to the puncture needle (10), and the first end (201) being wound into a helical tube shape. After puncture, the puncture needle (10) is separated from the second end (202), and the second end (202) is wound into a helical tube shape and curled on the wound side of a user. After the wound of the user is healed, the following process is repeated for a plurality of times, i.e., the first end (201) is extended by a certain length, the guidewire (20) is moved to a suitable position of the second end (202), and the first end (201) and the second end (202) are wound tightly, until reaming is achieved.
Inventors:
ZENG BIAO (CN)
Application Number:
PCT/CN2021/119753
Publication Date:
October 20, 2022
Filing Date:
September 23, 2021
Export Citation:
Assignee:
ZENG BIAO (CN)
International Classes:
A61B17/34; A01K11/00; A44C7/00; A44C25/00; A61B17/06
Foreign References:
| CN113081198A | 2021-07-09 | |||
| CN105191341A | 2015-12-23 | |||
| US2739596A | 1956-03-27 | |||
| CN108618285A | 2018-10-09 | |||
| CN208159764U | 2018-11-30 | |||
| CN203563786U | 2014-04-30 | |||
| GB1247653A | 1971-09-29 | |||
| JP2009153786A | 2009-07-16 | |||
| CN201719367U | 2011-01-26 |
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