Patent EP0239255A1 successfully refreshed from Google Patents.
EP0239255A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Demountable peristaltic pump for photoactivation patient treatment system
Assignee: Janssen Pharmaceuticals Inc
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Filing: 1987-02-26
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Granted: —
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Expires: 2007-02-26
Abstract
Abstract A demountable peristaltic pump block combination for use in a photoactivatable agent patient treatment system wherein photoactivatable agents, while in contact with patient blood cells, are pumped through an irradiation chamber associated with the pump block (201) and irradiated extracorporeally before being returned to the patient.
Inventors
- 👤 Vernon H. Troutner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:04
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/14212; A61M5/14232; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1276; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/279
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
In a patient treatment system wherein patient fluids, in contact with a photoactivatable agent, are irradiated extracorporeally in an irradiation chamber for photoactivating the photoactivatable agent, and returning said treated cells to the patient, a combination comprising a peristaltic roller pump having three or more rollers, a pump block associated with said irradiation chamber having hollow tubing in fluid communication with said irradiation chamber, said pump block further comprising an arcuate track having an angle φ satisfying the following formula: 180 ≧ φ ≧ 360/n where n is the number of rollers associated with said peristaltic roller pump, said hollow tubing following the contour of said arcuate track, said pump block adapted to slidably engage said peristaltic roller pump whereby upon engagement, said hollow tubing is occluded by at least one roller.
Claim 2
Dependent Claim
132 words
In a patient treatment system wherein patient fluids, in contact with a photoactivatable agent, are irradiated extracorporeally in an irradiation chamber for photoactivating the photoactivatable agent, and returning said treated cells to the patient, a combination comprising a peristaltic roller pump having three or more rollers, a pump block associated with said irradiation chamber having hollow tubing in fluid communication with said irradiation chamber, said pump block further comprising an arcuate track having an angle φ satisfying the following formula: 180 ≧ φ ≧ 360/n where n is the number of rollers associated with said peristaltic roller pump, said hollow tubing following the contour of said arcuate track, said pump block adapted to slidably engage said peristaltic roller pump whereby upon engagement, said hollow tubing is occluded by at least one roller.
Claim 3
Dependent Claim
59 words
The combination as provided in Claim 1 wherein said peristaltic roller pump comprises a pump with three rollers, said rollers mounted on arms, one end of which are pivotably mounted on said peristaltic roller pump, and the other end of said arms being urged outward from the center of said peristaltic pump by resilient means associated with said pump.
Claim 4
Dependent Claim
35 words
The combination as set forth in Claim 2 further comprising travel limiting means associated with the end of said pump having said resilient means for limiting the outward movement of said arm and said roller.
Claim 5
Dependent Claim
42 words
The combination of any one of claims 1 to 3 wherein said peristaltic roller pump further comprises alignment means for facilitating engagement of said rollers of said peristaltic roller pump with said arcuate track of said pump block upon sliding engagement therebetween.
References Cited (Backward Citations)
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