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Soft shell venous reservoir

  • US 6,337,049 B1
  • Filed: 08/28/1998
  • Issued: 01/08/2002
  • Est. Priority Date: 08/28/1998
  • Status: Expired due to Term
First Claim
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1. The combination of a disposable blood reservoir and a rigid housing for vacuum assisted venous drainage, in a sterile extracotporeal circuit, said combination comprising:

  • a) said disposable blood reservoir having a first wall and a second wall, said first wall having a first periphery, said first wall having an inner blood side and an external side, said second wall having a second periphery, an inner blood side and an external side, said first wall being a flexible wall, said first wall sealed along its first periphery to said second wall along said second periphery thereby forming a blood chamber having at least one flexible wall, said blood chamber adapted to contain a physiological liquid at a first pressure, b) said disposable blood reservoir having an inlet tube, an outlet tube, and a gas purge tube to provide fluid communication between said blood chamber and said extracorporeal circuit, c) at least a first and a second rigid structure that when combined form said rigid housing, d) at least one of said rigid structures being disposable and integrated with said disposable blood reservoir, e) a gas port formed in one of said rigid structure, said port adapted to be in fluid communication with a vacuum source, f) at least one of said inlet, outlet or purge tubes passing through and is sealed within said disposable rigid structure, wherein said rigid structures are combined to form said rigid housing that seals said flexible wall of said blood chamber within said rigid housing, with said gas port providing a second pressure within said rigid housing when said housing is sealed, said second pressure being transmitted across said at least one flexible wall to affect the first pressure of said physiological liquid in said blood chamber, said combination formed by an end user without compromising the sterility of said extracorporeal circuit.

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