Peristaltic pump cartridge with tube standoff

Abstract

Peristaltic pump cartridge 10 includes a housing 12 and a length of tubing 14 connected to the housing for engagement with a pump roller head 42 . A cover plate 16 is connected to the housing 12 and oriented essentially parallel to the length of tubing 14 . At least one standoff tab 18 is connected to the cover plate 16 to ensure that the length of tubing 14 is at least a known distance from the cover plate 16 to facilitate engagement of the tubing 14 with the pump roller head 42.

1 . An ophthalmic pump cartridge comprising: 
 a housing including a collection chamber for holding aspirant from a surgical site;    a length of tubing connected to the housing for engagement with a pump roller head;    a cover plate connected to the housing and oriented essentially parallel to the length of tubing; and    at least one standoff tab connected to the cover plate for ensuring that the length of tubing is at least a known distance from the cover plate to facilitate engagement of the tubing with the pump roller head.    
     
     
         2 . The cartridge of  claim 1 , wherein the housing is formed of thermoplastic resin.  
     
     
         3 . The cartridge of  claim 1 , wherein the length of tubing includes a first end connected to an inlet and a second end connected to the collection chamber.  
     
     
         4 . The cartridge of  claim 1 , wherein the cover plate includes a handle.  
     
     
         5 . The cartridge of  claim 1 , wherein the cartridge includes a pair of standoff tabs and wherein the tabs include a concave end for mating with the tubing.