Puncture device
AssigneeTerumo Kabushiki Kaisha
InventorsYutaro Sonoda, Tetsuro Kawanishi
Life of this patent
Estimating the term…
Abstract
A puncture device which can stick a puncture needle certainly to a predetermined region of a skin includes a puncture needle having a curvature portion, a retaining member retaining the puncture needle, an indwelling device adapted to be indwelled in a living body by way of the puncture needle, and a guide member mounted at a predetermined position of a body surface. The puncture needle is adapted to be stuck into the skin along the guide member.
Claims13
A puncture device for puncturing a skin by a puncture needle, the puncture device comprising:
- a device main body having a contact surface which contacts said skin;
- a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a predetermined curvature radius;
- an indwelling device configured to be indwelled in a living body by said puncture needle;
- and
- a puncture needle moving means provided in said device main body for moving said puncture needle along a circular trajectory which said curvature radius draws so that the puncture needle punctures said skin,
- wherein the puncture device is configured to prevent the needlepoint from protruding out of a surface of the skin while the puncture needle punctures the skin.
A puncture device for puncturing a skin by a puncture needle, the puncture device comprising:
- a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle;
- a retaining member for retaining the puncture needle;
- an indwelling device configured to be indwelled in a living body by said puncture needle;
- and
- a guide member mounted at a predetermined position of a body surface, wherein
- said puncture needle is configured to move along said guide member to puncture said skin, and
- wherein the puncture device is configured to prevent the needlepoint from protruding out of a surface of the skin while the puncture needle punctures the skin.
A puncture device for puncturing a skin by a puncture needle, the puncture device comprising:
- curved along the lengthwise direction of the puncture needle;
- a retaining member for retaining this puncture needle;
- an indwelling device configured to be indwelled in a living body by said puncture needle;
- a fixing member for fixing said indwelling device;
- and
- a guide member mounted at a predetermined position of the body surface, wherein
- said puncture needle is configured to move along said guide member to puncture said skin.
A puncture method for puncturing a skin by a puncture needle, the puncture method using:
- a device main body having a contact surface which contacts said skin;
- a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a predetermined curvature radius;
- an indwelling device configured to be indwelled in a living body by said puncture needle;
- and
- a puncture needle moving means provided in said device main body, the method comprising moving said puncture needle by said puncture needle moving means to move along a circular trajectory which said curvature radius draws so that the puncture needle punctures said skin while the needlepoint is prevented from protruding out of a surface of the skin.
A method of puncturing skin comprising:
- positioning a puncture device relative to skin such that a contact surface of a device main body of the puncture device contacts skin, the puncture device also comprising a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a curvature radius the puncture device also comprising an indwelling device configured to be indwelled in a living body by said puncture needle;
- moving the puncture needle along a circular trajectory which the curvature radius draws to puncture the skin at a first point with the needlepoint;
- moving the puncture needle along the circular trajectory to withdraw the puncture needle from the skin;
- and
- wherein, between a time when the needlepoint punctures the skin at the first point and a time when the puncture needle is withdrawn from the skin, the needlepoint does not protrude out of the skin.
Dependencies are inferred from the claim text.