Roller clamp for defining a flow lumen in tubing

Details Roller clamp for defining a flow lumen in tubing Roller clamp for defining a flow lumen in tubing

A - Human Necessities

61

M

251/1

A61M 39/28 (2006.01)

Patent

CA 1132118

ROLLER CLAMP FOR DEFINING A FLOW LUMEN IN TUBING ABSTRACT OF THE DISCLOSURE A two piece roller clamp is disclosed for regulating the fluid flow rate through plastic tubing (16) by defining the size of the tubing lumen. The clamp includes a U- shaped body (10) with a base (12) and two side walls (11) and a longitudinally movable roller (13) mounted in tracks (15) formed in the side walls. The roller (13) is biased against a roller bearing surface (22) running along the length of the base. Adjacent to the roller bearing surface (22) is a tube compression slot (30) having a lower wall (32) uniformly spaced below the roller. A channel (35) of varying cross-section is provided in the lower wall (32) of the tube compression slot. The roller (13) exerts a uniform, but minimal force on the tubing compressing it against the lower wall (32) of the slot (30) permitting the formation of a lumen defined by the contours of the channel (35). The slot is dimensioned vertically to provide for the minimal compression force by the roller and is di- mensioned horizontally to confine the entire compressed cross-section of tubing (16) without excess space thereby conforming the tubing to the contours of the channel (35) to regulate the lumen size. A uniform compression force is maintained during longitudinal movement of the roller (13) by the roller bearing surfaces (22) which prevent perpendicular movement of the roller towards the slot.

363621

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