Lightnix, Inc.

Mitsuo Fukuda

Seiji Aoyagi

A medical needle comprising a flat puncturing part having front and back surfaces that are parallel to each other, wherein the puncturing part comprises a pair of side-surface inclined parts and provided at tips of respective side surfaces and a front-surface inclined part provided at a tip of the front surface, the pair of side-surface inclined parts and the front-surface inclined part each extend in an inclined manner relative to a puncturing direction so as to be tapered, and the tip of the front-surface inclined part adjoins a blade edge part formed by adjoining the tips of the pair of side-surface inclined parts and a depression is formed in the front surface of the puncturing part so as to partially indent the pair of side-surface inclined parts and the front-surface inclined part.

Medical needle and puncture tool

Provided are a medical needle and a puncturing instrument which make it possible to administer a predetermined amount of a substance to be administered into a living body and/or collect a predetermined amount of an object to be collected from within the living body with ease and accuracy. A medical needle () is provided with a puncturing part () which can penetrate into the living body. The puncturing part () has a pair of planar portions () which are parallel to each other in an outer surface and a retaining chamber () defined within the puncturing part (), the retaining chamber () passing through the puncturing part () and opening to the pair of planar portions () on each side. A puncturing instrument can be structured by accommodating the medical needle () in a casing in such a way that the medical needle () can project therefrom.

Medical needle and puncturing instrument

A puncture needle cartridgedetachably mounted on a puncturing device body to form a puncturing device is provided with a needle bodyhaving a puncturing portion, and also with a casingfor housing the needle bodyand having openingsthat are respectively formed in front of and behind the needle body. The needle bodyis mounted so as to be movable between a retracted position, wherein the tipof the puncturing portion is retraced in the casing, and an extended position, wherein the tipof the puncturing portion is projected outward from the casingby receiving a pressing force from the puncturing device body. The needle bodyhas a biasing means for biasing the needle bodyfrom an extended position towards a retracted position. The puncture needle cartridge can be mass-produced at low cost, and enables a user to perform puncturing safely and easily.

Puncture needle cartridge and puncture device

One of the aspects of the present invention is to provide a medical needle extending along a predetermined direction and having a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area varies based upon a distance from a needle tip. The medical needle includes a plurality of maximal points where the cross-sectional area of the vertical cross-section is locally maximal, and a plurality of minimal points where the cross-sectional area of the vertical cross-section is locally minimal. The vertical cross-section at the maximal point closest to the needle tip has the cross-sectional area not less than those at any other maximal points.

Medical needle and medical device

One of aspects of the present invention is to provide a medical lancet, which includes a first ascending region, a descending region, and a second ascending region subsequently and integrally formed of biodegradable material. Those regions extend from a point of the lancet in a predetermined direction, and each of the regions having triangular cross sections taken along any planes perpendicular to the predetermined direction. The first and second ascending regions have the triangular cross sections of which area monotonically increases as being away from the point. Also, the descending region has the triangular cross sections of which area monotonically decreases as being away from the point. The first and second ascending regions have the largest cross section having substantially the same size and shape to each other.

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Hyogo, Japan

Mitsuo Fukuda