Patent ID: 8678348

Claim:
A gas flow control valve comprising: a valve body having a central bore and an exit port, the central bore of the valve body having a valve body central axis, the exit port having an exit bore in fluid communication with the central bore, the exit port of the valve body having an exit port central axis, the exit port central axis of the exit port angled between 20 and 85 degrees relative to the valve body central axis; wherein the valve body has a proximal portion and a distal portion, wherein gas enters the valve body through the proximal portion and exits through the exit port; a threaded member having a proximal portion and a distal portion, the proximal portion of the threaded member affixed to the distal portion of the valve body, the threaded member having a threaded member central axis collinear with the valve body central axis, the threaded member comprising a threaded bore and a sliding bore, the threaded bore entering from the proximal portion of the threaded member and the sliding bore entering from the distal portion of the threaded member, the threaded bore in fluid communication with the sliding bore; a rotating assembly configured to rotate about the valve body central axis and to translate along the valve body central axis, the rotating assembly comprising a handle affixed to a threaded shaft affixed to a valve needle, the handle including a proximal portion and a distal portion, the proximal portion of the handle configured to slide within the sliding bore of the threaded member, the proximal portion including measurement indicia configured to indicate the longitudinal position of the rotating assembly relative to the threaded member; wherein the threaded bore of the threaded member is configured to accept the threaded shaft of the rotating assembly and wherein rotation of the rotating assembly relative to the threaded member causes the rotating assembly to translate relative to the threaded member; wherein the valve body includes a valve seat configured to receive the valve needle of the rotating assembly such that translation of the valve needle relative to the valve seat alters the flow rate of gas travelling through the gas flow control valve; wherein the exit bore of the exit port is located distally from the valve seat of the valve body; wherein the valve needle comprises a tapered portion; and wherein the sliding bore of the threaded member is configured to accept the proximal portion of the handle of the rotating assembly.