Wound drainage equipment

Claim 1

A low suction pump for use with a disposable collection bag and tube for draining body fluids, wherein said tube is provided with a resilient and collapsible wall portion, said pump comprising a pumping element having at least two roller members, a guide element having s single unitary elongated backing surface describing an arc of not more than 180* for maintaining a single passage of the collapsible wall portion of the tube adjacent said pumping element, means mounting said pumping element for periodic relative movement of said roller members with respect to said backing surface in a path which extends lengthwise of the backing surface with the roller members progressively squeezing the collapsible wall against the backing surface, the guide element and the pumping element being relatively shiftable between a loading position in which clearance is provided between the backing surface and the pumping element to facilitate sideways loading and removal of the tube and an operating position in which the tube is maintained in interengagement with the pumping element, a cover movable between a closed position for covering the pumping element and the guide element and an open position yielding access to the pumping element and guide element, and means for relatively shifting the guide element and the pumping element to the loading position when the cover is in the open position and for relatively shifting the pumping element and the guide element to the operating position when the cover is in the closed position.