Indwelling needle assembly
First Claim
Patent Images
1. An indwelling needle assembly comprising:
- an inner needle having a sharp needlepoint at a distal end;
an inner needle hub fixed to a proximal portion of the inner needle;
a hollow outer needle in which the inner needle is inserted;
an outer needle hub fixed to a proximal portion of the outer needle;
a pressing member, which presses an intermediate portion of the outer needle between a proximal end and a distal end; and
a grip member connected to the inner needle hub which protrudes in a distal direction from the inner needle hub;
wherein the pressing member has an elongated main body section which has a proximal portion connected to the outer needle hub and is disposed along an axis of the outer needle, and a pressing section which is provided on a distal side relative to the proximal portion of the main body section and presses the outer needle;
wherein the pressing member is movable between a position where the pressing section contacts the outer needle and a position where the pressing section moves away from contact with the outer needle; and
wherein the grip member extends over the outer needle hub in the assembled state.
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Abstract
An indwelling needle assembly includes a hollow outer needle, an outer needle hub fixed to a proximal portion of the outer needle, and an inner needle inserted in the outer needle. An inner needle hub is fixed to a proximal portion of the inner needle. A pressing member is connected to the outer needle hub, wherein the pressing member presses a portion of the outer needle between a proximal end and a distal end during a puncturing operation. The needlepoint of the inner needle and a distal portion of the outer needle, while in an assembled state, puncture a blood vessel in a process of placing the outer needle indwelling in a blood vessel.
38 Citations
18 Claims
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1. An indwelling needle assembly comprising:
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an inner needle having a sharp needlepoint at a distal end; an inner needle hub fixed to a proximal portion of the inner needle; a hollow outer needle in which the inner needle is inserted; an outer needle hub fixed to a proximal portion of the outer needle; a pressing member, which presses an intermediate portion of the outer needle between a proximal end and a distal end; and a grip member connected to the inner needle hub which protrudes in a distal direction from the inner needle hub; wherein the pressing member has an elongated main body section which has a proximal portion connected to the outer needle hub and is disposed along an axis of the outer needle, and a pressing section which is provided on a distal side relative to the proximal portion of the main body section and presses the outer needle; wherein the pressing member is movable between a position where the pressing section contacts the outer needle and a position where the pressing section moves away from contact with the outer needle; and wherein the grip member extends over the outer needle hub in the assembled state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An indwelling needle assembly comprising:
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a hollow outer needle; an outer needle hub fixed to a proximal portion of the outer needle; an inner needle inserted in the outer needle; an inner needle hub fixed to a proximal portion of the inner needle; a pressing member that is connected to the outer needle hub, wherein the pressing member presses a portion of the outer needle between a proximal end and a distal end during a puncturing operation, and wherein a needlepoint of the inner needle and a distal portion of the outer needle, while in an assembled state, puncture a blood vessel in a process of placing the outer needle indwelling in a blood vessel; and a grip member is connected to the inner needle hub and protrudes in a distal direction from the inner needle hub; wherein the pressing member has an elongated main body section that is disposed along the axis of the outer needle and disposed on the outer needle, a finger hook projection which is provided in the main body section and on which a finger is placed, and a pressing section; wherein the pressing member is movable between a position where the pressing section contacts the outer needle and a position where the pressing section comes away from the outer needle; and wherein the grip member extends over the outer needle hub in the assembled state. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification