Patent ID: 11938305
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A syringe assembly comprising: a syringe having a distal nozzle portion; and a cap mounted to the distal nozzle portion of the syringe, wherein
the cap comprises:
a plate-shaped seal member that has elasticity and seals a distal opening of the distal nozzle portion; and
a tubular cover member that holds the seal member and is harder than the seal member, wherein
the cover member has a base portion provided at a distal end of the cover member, and a tubular mounting portion that extends in a proximal direction from the base portion along an axis of the cap and covers the distal nozzle portion,
the base portion has a holding portion that holds the seal member, and a through-hole that communicates with the holding portion and exposes a distal surface of the seal member,
the mounting portion has:
two claw portions that are arranged at positions separated from the holding portion in the proximal direction, protrude inward from an inner peripheral surface of the mounting portion, and oppose each other;
two first column portions that are arranged on both sides of one of the two claw portions in a circumferential direction of the mounting portion and extend in the proximal direction along the axis of the cap; and
two second column portions that are arranged on both sides of another of the two claw portions in the circumferential direction of the mounting portion and extend in the proximal direction along the axis of the cap,
an outer peripheral portion of the mounting portion has two outer peripheral notch portions arranged between the two first column portions and between the two second column portions, respectively, so as to face opposite directions,
portions of the mounting portion where the two outer peripheral notch portions are provided have a smaller radial thickness than the two first column portions and the two second column portions, and each distance from the axis of the two outer peripheral notch portions is shorter than a distance from the axis of each outer peripheral surface of the two first column portions and the two second column portions, and
an inner peripheral portion of the mounting portion has two inner peripheral recessed portions which are arranged to oppose each other between the two first column portions and between the two second column portions, respectively, and are recessed radially outward from inner peripheral surfaces of the two first column portions and the two second column portions.