MEDICAL NEEDLE AND MEDICAL DEVICE

PROBLEM TO BE SOLVED: To provide a medical device using a medical needle which reduces pain to the patient and minimizes damage to the pierced portion of the patient. SOLUTION: The medical needle is formed of any biocompatible materials including polymer macromolecule, bio-macromolecule, protein, an...

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Bibliographische Detailangaben
Hauptverfasser:	AOYANAGI SEIJI, FUKUDA MITSUO
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a medical device using a medical needle which reduces pain to the patient and minimizes damage to the pierced portion of the patient. SOLUTION: The medical needle is formed of any biocompatible materials including polymer macromolecule, bio-macromolecule, protein, and biocompatible inorganic material, and extends along a predetermined direction from a needle tip to the rear end portion, and has a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area regularly varies based upon a distance from the needle tip. The medical needle includes a plurality of maximal points where the cross-sectional area of the vertical cross-section is maximal, and at least one minimal point where the cross-sectional area of the vertical cross-section is 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. The vertical cross-section has a hexagon shape. COPYRIGHT: (C)2010,JPO&INPIT