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US 11,602,309 B2Granted
Needle member, sensor, and method for manufacturing needle member
AssigneeTerumo Kabushiki Kaisha
InventorTakeshi Akiyama
Life of this patent
Estimating the term…
Abstract
A needle member includes: a tubular side wall through which a hollow portion extends in a longitudinal direction. An opening portion connected to the hollow portion extends laterally through the tubular side wall. The tubular side wall comprises a side wall reinforcement portion located at a position opposing the opening portion, wherein the hollow portion is interposed between the opening portion and the side wall reinforcement portion.
Claims5
A sensor comprising:
- a needle member comprising:
- a tubular side wall through which a hollow portion extends in a longitudinal direction,
- wherein an opening portion connected to the hollow portion extends laterally through the tubular side wall, and
- wherein the tubular side wall comprises a side wall reinforcement portion located at a position opposing the opening portion, wherein the hollow portion is interposed between the opening portion and the side wall reinforcement portion;
- and
- a linear detection member located in the hollow portion of the needle member;
- wherein:
- the side wall reinforcement portion comprises a reinforcement portion inner surface that protrudes toward the hollow portion, the reinforcement portion inner surface comprising:
- a top portion, and
- a side portion that is continuous with the top portion;
- an inner surface of the needle member defines a receiving groove that receives the detection member at a position adjacent to the reinforcement portion inner surface;
- a distance from a longitudinal axis of the needle member to the inner surface of the needle member in a radial direction increases from the top portion toward a side of the needle member;
- and
- the side portion comprises a portion of a receiving surface that receives the detection member.
11 more elements
A sensor comprising:
- a needle member comprising:
- a tubular side wall through which a hollow portion extends in a longitudinal direction,
- wherein an opening portion connected to the hollow portion extends laterally through the tubular side wall, and
- wherein the tubular side wall comprises a side wall reinforcement portion located at a position opposing the opening portion, wherein the hollow portion is interposed between the opening portion and the side wall reinforcement portion;
- and
- a detection unit configured to detect a substance to be measured, the detection unit comprising an electrode layer or a reagent layer that is stacked on an inner surface of the needle member.
3 more elements
A method for manufacturing a needle member, the method comprising:
- forming a tubular body having an opening portion formed in a side wall thereof by performing steps comprising:
- forming a first concave portion at a first outer edge of a plate material, and forming a second concave portion at a second outer edge of the plate material, and
- deforming the plate material into a tubular shape through which a hollow portion extends such that the first outer edge where the first concave portion is formed is aligned with the second outer edge where the second concave portion is formed;
- and
- forming a bent portion that protrudes toward the hollow portion by pressing the tubular body at a position that opposes the opening portion in a radial direction of the tubular body.
2 more elements
Dependencies are inferred from the claim text.