Catheter assembly
AssigneeTerumo Kabushiki Kaisha
InventorMasahiro Ishida
Life of this patent
Estimating the term…
Abstract
A catheter assembly includes: an inner and outer needle assembly including: a catheter hub holding the catheter, an inner needle inserted through the catheter and configured to be punctured into a treatment target, an inner needle hub holding the inner needle, and a safety member that is movable together with the catheter hub and configured to advance beyond a needle tip of the inner needle; and a grip that accommodates the inner and outer needle assembly. The grip is configured to accommodate at least a part of the safety member before puncture of the inner needle and until the safety member advances beyond the needle tip, and includes a first member and a second member that are dividable in a direction orthogonal to a longitudinal direction of the grip.
Claims12
A catheter assembly comprising:
- a needle assembly extending in a longitudinal direction and comprising:
- a catheter hub holding a catheter,
- an inner needle inserted through the catheter and configured to be punctured into a treatment target,
- an inner needle hub holding the inner needle, and
- a safety member that is movable together with the catheter hub and configured to advance beyond a needle tip of the inner needle, wherein the safety member comprises:
- a proximal extending portion extending in the longitudinal direction, and
- a protruding portion that protrudes from the proximal extending portion in a direction different from the longitudinal direction, wherein the protruding portion is thinner than the proximal extending portion in a direction orthogonal to the longitudinal direction;
- and
- a grip that accommodates the needle assembly, wherein the grip is configured to accommodate at least a part of the safety member before puncture of the inner needle and until the safety member advances beyond the needle tip, and comprises a first member and a second member that are separable from one another in the direction orthogonal to a longitudinal direction of the grip, wherein:
- a safety guide space is located between the first member and the second member in the direction orthogonal to the longitudinal direction, and a part of the protruding portion is located in the safety guide space.
A method of manufacturing a catheter assembly, the method comprising:
- providing a needle assembly extending in a longitudinal direction and comprising:
- a catheter hub holding the catheter,
- an inner needle inserted through the catheter and configured to be punctured into a treatment target,
- an inner needle hub holding the inner needle, and
- a safety member that is movable together with the catheter hub and configured to advance beyond a needle tip of the inner needle, wherein the safety member comprises:
- a proximal extending portion extending in the longitudinal direction, and
- a protruding portion that protrudes from the proximal extending portion in a direction different from the longitudinal direction, wherein the protruding portion is thinner than the proximal extending portion in a direction orthogonal to the longitudinal direction;
- providing a grip that accommodates the needle assembly, wherein the grip is configured to accommodate at least a part of the safety member before puncture of the inner needle and until the safety member advances beyond the needle tip, and comprises a first member and a second member that are separable from one another in a direction orthogonal to a longitudinal direction of the grip;
- placing the needle assembly on the second member in an assembling direction, thereby fixing the inner needle hub to the second member;
- and
- after placing the needle assembly on the second member and fixing the inner needle hub to the second member, attaching the first member to the second member in the assembling direction such that the safety member is held by the grip, such that a safety guide space is located between the first member and the second member in the direction orthogonal to the longitudinal direction, and a part of the protruding portion is located in the safety guide space.
Dependencies are inferred from the claim text.