F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/31
F04B 43/12 (2006.01)
Patent
CA 1118640
ABSTRACT OF THE DISCLOSURE A source of power rotates a drive shaft upon which a pair of rollers are mounted. The rollers rotate in a recess and collapse an undialysed blood carrying tube against a wall thus causing a pumping action. When used with a single needle dialysis system, an occluding pin assembly in- termittently clamps off the dialysed blood carrying tube as said source of power is interrupted in rotation thus permit- ting the device to be used with a conventional single needle assembly. By rotating a cylindrical member upon the upper end of the drive shaft, the rollers can be retracted from ad- jacent the wall against which the undialysed blood carrying tube rests thus facilitating the engagement and disengagement of the undialysed blood carrying tube with the device. Inas- much as the wall thickness of such tubes often varies, bet- ween tubing produced by different manufacturers, means are provided to adjust the spatial relationship of the pump rol- lers with the wall against which the tube is pressed during the pumping action. A hinged lid is provided which, when closed, enables power to flow to the motor. This lid also includes means to retain the tubes in position during the operation of the device. The speed of the pump can be varied within limits and the timing sequence of the pump can also be varied within limits. Means are provided to disable the occluding pin assembly when the device is used with a double needle dialysis system.
319494
Legal Jules O.
Lepp William A.
Ade & Company
Legal Jules O.
Lepp William A.
LandOfFree
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