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Process for histological tissue specimen treatment that includes variable sensitivity level control

  • US 5,049,510 A
  • Filed: 01/05/1990
  • Issued: 09/17/1991
  • Est. Priority Date: 01/05/1990
  • Status: Expired due to Fees
First Claim
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1. A histological tissue specimen treatment process comprising the steps ofplacing a plurality of histological tissue specimens to be processed in an open chamber structure,closing said open chamber structure,flowing a first tissue processing material into said chamber structure under the influence of a pressure differential,monitoring the level of said first tissue processing material in said chamber structure with a sensor system that responds to a characteristic of the tissue processing material,terminating said flow of said first tissue processing material when said sensor system indicates that said first tissue processing material has reached a predetermined level in said chamber structure such that said plurality of histological tissue specimens are immersed in said first tissue processing material,flowing said first tissue processing material from said chamber structure after said plurality of histological tissue specimens have been immersed in said first tissue processing material for a predetermined time interval,changing the sensitivity of said sensor system as a function of a characteristic of a second tissue processing material,flowing said second tissue processing material into said chamber structure under the influence of a pressure differential,monitoring the level of said second tissue processing material in said chamber structure with said sensor system in said changed sensitivity condition,terminating said flow of said second tissue processing material when said sensor system indicates that said second tissue processing material has reached a predetermined level in said chamber structure such that said plurality of histological tissue specimens are immersed in said second tissue processing material,flowing said second tissue processing material from said chamber structure after said plurality of histological tissue specimens have been immersed in said second tissue processing material for a predetermined time interval,opening said chamber structure, andremoving said plurality of processed histological tissue specimens from said chamber structure.

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