OVUM COLLECTION NEEDLE

WIPO Patent Application WO/2017/014289

A1

A needle is formed in a three-part structure composed of a small-diameter tip part, a middle part and a large-diameter part, wherein the small-diameter tip part is fluid-communicated with the middle part through a first taper part and the middle part is fluid-communicated with the large-diameter part through a second taper part, the small-diameter tip part is so formed that the inner diameter is set at 0.35 mm or more on the basis of the allowable deviation of a cumulus cell, the outer diameter is set at 0.7 mm or less on the basis of the size of a small follicle and the inclination angle of an inclined tip and the length is set at 10 to 25 mm on the basis of the size of a dominant follicle, the inner diameter of the middle part is set at 0.45 mm or more on the basis of the size of a cumulus cell, the inner diameter of the first taper part is so set as to have an average grade of 10% or less in order to prevent the rapid deformation recovery of an oocyte-cumulus cell complex during suction, and the total length between the small-diameter tip part and the middle part is so set that the large-diameter part cannot penetrate through a tissue of a human body.

WO/1999/037216	PROTECTIVE SHEATH FOR TRANSVAGINAL ANCHOR IMPLANTATION DEVICE
WO/2001/047406	VAGINAL SPECULUM
WO/2020/187823	CURETTE AND USE THEREOF

INOUE FUTOSHI (JP)
TERAMOTO SHOKICHI (JP)

PCT/JP2016/071462

January 26, 2017

July 21, 2016

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KITAZATO MEDICAL CO LTD (JP)
NATURAL ART RES INST LTD (JP)

A61B17/42; A61B10/02

WO2014115304A1

2014-07-31

JP2001252293A	2001-09-18
JP2013141488A	2013-07-22
JP2004329745A	2004-11-25
US20100036193A1	2010-02-11

See also references of EP 3326554A4

HOSHINO, Hiroshi (JP)

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