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1. (WO2018103570) TWO-HALF AND DUAL-MODE BLADELESS PUNCTURE NEEDLE, AND TROCAR

Pub. No.:    WO/2018/103570    International Application No.:    PCT/CN2017/113726
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 01 00:59:59 CET 2017
IPC: A61B 17/34
Applicants: 5R MED TECHNOLOGY (CHENGDU) CO., LTD
成都五义医疗科技有限公司
Inventors: ZHU, Moshu
朱莫恕
Title: TWO-HALF AND DUAL-MODE BLADELESS PUNCTURE NEEDLE, AND TROCAR
Abstract:
A two-half and dual-mode bladeless puncture needle (200), and a trocar. The bladeless puncture needle (200) comprises a handle part (202), a distal part (206), and a rod part (204) therebetween; the rod part (204) comprises a central axis (201); the distal part (206) comprises a fixed half (210, 310, 320, 330, 340, 350, 360, 370) and a movable half (240, 410, 420, 430); the fixed half (210, 310, 320, 330, 340, 350, 360, 370) extends from a distal end to a proximal end and is fixed together with the rod part (204) or the handle part (202), while the movable half (240, 410, 420, 430) is movable with respect to the fixed half (210, 310, 320, 330, 340, 350, 360, 370) along the central axis (201); the fixed half (210, 310, 320, 330, 340, 350, 360, 370) comprises a fixed base body (220, 321, 331, 341, 351, 361, 371) and a fixed inclined distal end (221, 312, 322, 332, 342, 352, 362, 372) that is connected with the fixed base body and extends to a fixed top end; the movable half (240, 410, 420, 430) comprises a movable base body (250, 411, 421, 431) and a movable inclined distal end (251, 412, 422, 432) that is connected with the movable base body and extends to a movable top end; the fixed half (210, 310, 320, 330, 340, 350, 360, 370) comprises a sharp separating edge (226, 318, 328, 338, 348, 358, 368, 378) and/or a sharp top end (229, 319, 329, 339, 349, 359, 369, 379), and the movable half (240, 410, 420, 430) comprises a blunt separating edge (256, 418, 428, 438) and a blunt top end (259, 419, 429, 439). The structure of the bladeless puncture needle (200) is favorable to the dispersion of a puncturing force, a tearing force, and an extension force, increases the controllability of a puncture operation, and is helpful for reducing the risk of accidental injury.