Aspirators, components thereof, and assembly and fit thereof

Abstract

In part, the disclosure relates to an aspirator having a handle that includes a suction connector extending from a proximal end face, a substantially cylindrical sleeve mount having an outer surface and a shoulder. A tubular member defining a bore and having flared end disposed in a suction head having one or more cantilevered protuberances can extend from the sleeve mount. The substantially cylindrical sleeve mount is in relief with respect to the shoulder and extends distally therefrom. The substantially cylindrical sleeve mount defines an aperture. The suction connector bore, bore of tubular member, inner cavity of handle and suction head bore define a fluid flow path or cavity. The aspirator can include a sleeve that receives the suction head. The sleeve engages and interferes with the sleeve mount. The suction head and sleeve's inner wall have one or more engineered clearances between them to enhance assembly.

1 - 30 . (canceled) 
     
     
         31 . A method of providing tactile feedback for an aspirator comprising:
 providing an elastic aspirator sleeve comprising a sleeve wall, the sleeve wall defining a sleeve cavity and a proximal sleeve end face;   providing an aspirator handle comprising a sleeve mount and a tubular member, the tubular member extending from the sleeve mount, wherein sleeve cavity and sleeve mount are sized relative to each other to interfere over an engagement distance;   initiating interference between sleeve wall and sleeve mount when sleeve mount enters the sleeve cavity; and   maintaining interference between sleeve wall and sleeve mount from initiation of interference until the aspirator sleeve completely engages the sleeve mount.   
     
     
         32 . The method of  claim 31  wherein assembly force near complete engagement of the sleeve mount and the elastic sleeve is not larger than the assembly force when initiating interference. 
     
     
         33 . The method of  claim 31  wherein maintaining interference further comprises varying level of interference while maintaining interference over a first portion of the engagement distance along the sleeve mount. 
     
     
         34 . The method of  claim 33  wherein varying level of interference further comprises increasing the level of interference in response to a first range of assembly forces over the first portion of the engagement distance along the sleeve mount. 
     
     
         35 . The method of  claim 34  wherein varying level of interference further comprises increasing level of interference in response to a second range of assembly forces over a second portion of the engagement distance along the sleeve mount. 
     
     
         36 . The method of  claim 34  wherein a first rate of increasing assembly force for the first portion of the engagement distance is greater than a second rate of increasing assembly force for the second portion of the engagement distance. 
     
     
         37 . The method of  claim 35  wherein the first portion of the engagement distance includes a region of the outer surface that initially interferes with sleeve mount. 
     
     
         38 . The method of  claim 35  wherein the second portion of the engagement distance includes a region of the outer surface that is bounded proximally by a shoulder of the handle. 
     
     
         39 . The method of  claim 31  further comprising moving sleeve mount into sleeve cavity over an engagement distance until aspirator sleeve is installed on sleeve mount, wherein interference occurs over the engagement distance. 
     
     
         40 . The method of  claim 31  further comprising, in response to installation of sleeve on sleeve mount by a user, providing the tactile feedback to the user during installation until the sleeve is fully engaged relative the sleeve mount. 
     
     
         41 . The method of  claim 40  wherein the tactile feedback is an assembly force, wherein the assembly force provided to the user is increasing until the sleeve reaches a shoulder disposed around the sleeve mount. 
     
     
         42 . The method of  claim 31  wherein the interference is maintained along substantially all of the engagement distance, wherein the engagement distance ranges from about 0.400 to about 0.800 inches. 
     
     
         43 . The method of  claim 31  further comprising providing tactile feedback to a user without abrupt changes in assembly force profile during engagement of sleeve and sleeve mount.