Cassette drawer assembly for photoactivation patient treatment system

• US 4,573,962 A
• Filed: 10/29/1984
• Issued: 03/04/1986
• Est. Priority Date: 10/29/1984
• Status: Expired due to Term

• Current Assignee: McNeilab, Inc.
• Original Assignee: Extracorporeal Medical Specialties Incorporated
• Inventors: Troutner, Vernon H.
• Primary Examiner(s): Skogquist, Harland S.
• Application Number:
  US06/665,817
• Time in Patent Office: 491 Days
• Field of Search: 604/4, 604/5, 604/6, 604/20, 604/259
• US Class Current: 604/6.08
• CPC Class Codes: A61M 1/36222 Details related to the interface between cassette and machine
• CPC Class Codes: A61M 1/36224 with sensing means or components thereof
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/362262 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/3681 by irradiation
• CPC Class Codes: A61M 1/3683 using photoactive agents
• CPC Class Codes: A61M 1/3693 using separation based on different densities of components, e.g. centrifuging
• CPC Class Codes: A61M 1/3696 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: A61M 2205/051 with radiation therapy
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission

Abstract

Cassette drawer assembly for receiving an irradiation cassette wherein patient blood is irradiated to photoactivate a reagent in contact therewith, said irradiated blood being returned to the patient as part of the complete treatment.

Claims

1. In a patient treatment system for extracorporeally irradiating blood from said patient to photoactivate a reagent in contact therewith and wherein said blood is circulated through a plurality of serially connected, cylindrical cavities having a radiation source centrally disposed therein forming a treatment cassette, an apparatus for use in said treatment system and for receiving said cassette comprising:

a container formed from front and back panels connecting top and bottom panels and adapted to receive said cassette;

means for supplying electrical power to said radiation source of said treatment cassette, said means for supplying electrical power having first power interconnect means mounted on said container for matably engaging second power interconnect means mounted on said patient treatment system;

said container being movably mounted on tracks attached to said patient treatment system whereby said container must be moved to a first position to permit installation or removal of said cassette and where movement to said first position disengages said first power interconnect means from said second power interconnect means and wherein said container must be moved to a second position to engage said first and second means for supplying energy to activate said radiation source.

2. The cassette holding apparatus of claim 1 further comprising:

means for cooling said radiation sources including intake means mounted on said container for receiving air from said patient treatment system and exhaust means mounted on said container for discharging air to said patient treatment system, said intake and exhaust means being disengagable from said patient treatment system when said container is moved to said first position and reengagable upon movement of said container to said second position.

3. The cassette holding apparatus of claim 2 wherein said intake and exhaust means each comprise a hollow pipe communicating with said container and slidably engageable with mating counterparts on said patient treatment system.

4. The cassette holding apparatus of claim 1 wherein said cassette holding apparatus further comprises radiation sensor means for detecting whether said radiation source is activated upon engagement of said first and second power inteconnect means and temperature sensor means for detecting air flow through said container and further comprises blood temperature sensors and bubble detector sensors.

5. The cassette holding apparatus of claim 4 wherein said blood temperature and bubble detector sensors are connected to said patient treatment system by a plurality of braided ribbon wires fixedly mounted on an extension attached to the back panel of said container, said braided ribbon wires provided in excess to allow movement of said container to said first and second positions, said extension being juxtaposed near protector ledge means for containing and storing said braided ribbon wires in a safe location upon movement of said container to said second position.