医療用穿刺装置およびその製造方法

Japanese Patent JP7228400

B2

To provide a medical lancing device and manufacturing method thereof, which may rapidly protrude a needle to the outside of a first hollow member.SOLUTION: There is provided a medical lancing device 1 comprising a first hollow member 10, a second hollow member 20 arranged in an inner cavity 11 of the first hollow member 10, and a needle 30 which is fixed in the inner cavity 21 of the second hollow member 20 and communicates with the inner cavity 21. A plane 41 which is perpendicular to a distal/proximal direction of the first hollow member 10 and which has the maximum cross-sectional area of the first hollow member 10 within a section 40 from a distal end of the first hollow member 10 to a position apart from the distal end at 15 cm to the proximal side satisfies (1) and (2): (1) (1) the center point Cin of an inscribed circle 15 of the first hollow member 10 is positioned at an eccentric position from the center point Cout of a circumscribed circle 16; (2) a vector A whose starting point is the center point Cin and whose end point is point P where a perpendicular line L drawn from a tip 30a of the needle 30 to the plane 41 intersects the plane 41 is the same direction with a vector B whose starting point is the center point Cin and whose end point is the center point Cout.SELECTED DRAWING: Figure 2

JPS5991967	PRODUCTION OF CANULA TYPE STAY NEEDLE
WO/2011/141138	DEVICE FOR ADJUSTING THE LENGTH OF INFUSION TUBING
JP4063893	Subcutaneous injection set

Hiroto Takenaka

JP2019022452A

February 24, 2023

February 12, 2019

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Kaneka Corporation

A61M5/14

JP2010516435A
JP3064653U
JP2015134117A
JP5245102A
JP2018175057A

WO2018148551A1
US20090198212

Patent Attorney Corporation ASFI International Patent Office

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