Medical stopcock

摘要

A medical stopcock includes a main body; and a cock. The main body includes: a tubular portion; an upstream port and a downstream port; and a bypass port provided between the upstream port and the downstream port. The cock includes: a cylindrical portion rotatably accommodated in the tubular portion of the main body; and a handle configured to allow rotation of the cylindrical portion. The cylindrical portion includes: a first flow path groove communicating with the upstream port and the bypass port when the cock is in a reference position, a second flow path groove communicating with the bypass port and the downstream port when the cock is in a reference position, at least one wall portion closing openings of the upstream port, the bypass port and the downstream port when the cock is rotated by a predetermined amount from the reference position.

主权项

1. A medical stopcock comprising:
a main body; and a cock, wherein the main body includes:
a tubular portion;an upstream port and a downstream port provided on an outer circumference of the tubular portion; anda bypass port provided between the upstream port and the downstream port, wherein the cock includes:a cylindrical portion rotatably accommodated in the tubular portion of the main body; anda handle configured to allow rotation of the cylindrical portion,wherein the cylindrical portion includes:
a first flow path groove on an outer circumferential surface of the cylindrical portion, the first flow path groove communicating with the upstream port and the bypass port when the cock is in a reference position,a second flow path groove on an outer circumferential surface of the cylindrical portion, the second flow path groove communicating with the bypass port and the downstream port when the cock is in the reference position, anda plurality of wall portions configured to simultaneously close openings of the upstream port, the bypass port and the downstream port when the cock is rotated by a predetermined amount from the reference position,wherein the first flow path groove and the second flow path groove are configured to bypass respective ones of the plurality of wall portions, wherein the upstream port, the bypass port and the downstream port communicate with each other when the cock is in the reference position, wherein the first flow path groove includes:
a groove corresponding to the upstream port and communicating with the upstream port;a first groove corresponding to the bypass port and communicating with the bypass port; anda first circumferential groove communicating with the groove corresponding to the upstream port and the first groove corresponding to the bypass port, and wherein the second flow path groove includes:
a groove corresponding to the downstream port and communicating with the downstream port;a second groove corresponding to the bypass port and communicating with the bypass port; anda second circumferential groove communicating with the second groove corresponding to the bypass port and the groove corresponding to the downstream port.