US2002186369A1PendingUtilityA1

Device for verifying the accuracy of a spectral analyzer

41
Priority: Aug 31, 1999Filed: Jul 30, 2002Published: Dec 12, 2002
Est. expiryAug 31, 2019(expired)· nominal 20-yr term from priority
Inventors:Theodore E. CadellPaul DrennanJames SamsoondarRomuald PawluczykAshwani KaushalBronislaw BednarzJohn Joseph Kuta
A61B 5/1455B82Y 15/00Y10S977/958A61B 2560/0233Y10S977/926A61B 5/14532G01N 21/4785Y10S977/904A61B 5/1495Y10S977/954
41
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Claims

Abstract

The present invention provides an artificial member ( 80, 210 ) which mimics the absorbance spectrum of a body part and includes the spectral components of blood analytes. The artificial member comprises a light scattering and reflecting material, and has a chamber portion comprising one or more chambers ( 90, 100, 220 ). The artificial member is configured to be reproducibly received in a measuring receptor which receptor is operatively connected to a non-invasive monitoring device.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An artificial member, which mimics the absorbance spectrum of a body part and includes the spectral components of blood analytes, the artificial member comprising a light scattering and reflecting material, and having a chamber portion comprising one or more chambers, said member being configured to be reproducibly received in a measuring receptor which is operatively connected to a non-invasive monitoring device.  
     
     
         2 . The member according to  claim 1 , wherein the body part which is mimicked is a finger.  
     
     
         3 . The member according to  claim 1 , wherein there is one chamber.  
     
     
         4 . The member according to  claim 1 , wherein there are two chambers.  
     
     
         5 . The member according to  claim 1 , wherein each chamber is filled with an O-cellulose material which mimics light scattering properties of tissue.  
     
     
         6 . The member according to  claim 1 , wherein each chamber is filled with a gel material containing Amaranth and sodium benzoate and holding light scattering and reflective particles which mimic the light scattering properties of tissue.  
     
     
         7 . The member according to  claim 6 , wherein the material which fills each chamber is fluid free.  
     
     
         8 . The member according to  claim 6 , wherein the reflective particles comprise Teflon-PTFE, Titanium Dioxide (TiO 2 ) or are Polystyrene nanospheres.  
     
     
         9 . The member according to  claim 1 , wherein the light scattering and reflecting material is Teflon-PTFE.  
     
     
         10 . The member according to  claim 1 , wherein the configuration of the member to be reproducibly received comprises a stabilizing member extending from the chamber portion to reversibly urge other surfaces of the member into contact with the measuring receptor.  
     
     
         11 . The member according to  claim 10 , wherein the stabilizing member is as depicted in FIG. 9.  
     
     
         12 . A method of transferring algorithms from one spectral instrument to another comprising the steps of: 
 measuring a spectral response of a member according to  claim 1  in a first spectral instrument;    measuring a spectral response of the member in a second spectral instrument;    determining any difference in measurements from the first instrument and second instrument; and    modifying the algorithms of the instruments to account for any difference.    
     
     
         13 . The method according to  claim 12 , wherein the body part which is mimicked by the member is a finger.  
     
     
         14 . The method according to  claim 12 , wherein there is one chamber.  
     
     
         15 . The method according to  claim 12 , wherein there are two chambers.  
     
     
         16 . The method according to  claim 12 , wherein each chamber is filled with an O-cellulose material which mimics light scattering properties of tissue.  
     
     
         17 . The method according to  claim 12 , wherein each chamber is filled with a gel material containing Amaranth and sodium benzoate and holding light scattering and reflective particles which mimic the light scattering properties of tissue.  
     
     
         18 . The method according to  claim 17 , wherein the material which fills each chamber is fluid free.  
     
     
         19 . The method according to  claim 17 , wherein the reflective particles comprise Teflon-PTFE, Titanium Dioxide (TiO 2 ) or are Polystyrene nanospheres.  
     
     
         20 . The method according to  claim 12 , wherein the light scattering and reflecting material is Teflon-PTFE.  
     
     
         21 . The method according to  claim 12 , wherein the configuration of the member to be reproducibly received comprises a stabilizing member extending from the chamber portion to reversibly urge other surfaces of the member into contact with the measuring receptor.  
     
     
         22 . The method according to  claim 21 , wherein the stabilizing member is as depicted in FIG. 9.  
     
     
         23 . A method for mimicking the absorbance spectrum of a body part which includes the spectral components of blood analytes, the method comprising: providing a member that comprises of a light scattering and reflecting material, a chamber portion comprising one or more chambers, and a member configuration to be reproducibly received in a measuring receptor; inserting a member into a measuring device which is operatively connected to a non-invasive monitoring device; taking measurements with the device and comparing the results with those obtained from a body part of a subject which the member is intended to mimic.  
     
     
         24 . The method according to  claim 23 , wherein the body part which is mimicked by the member is a finger.  
     
     
         25 . The method according to  claim 23 , wherein there is one chamber.  
     
     
         26 . The method according to  claim 23 , wherein there are two chambers.  
     
     
         27 . The method according to  claim 23 , wherein each chamber is filled with an O-cellulose material which mimics light scattering properties of tissue.  
     
     
         28 . The method according to  claim 23 , wherein each chamber is filled with a gel material containing Amaranth and sodium benzoate and holding light scattering and reflective particles which mimic the light scattering properties of tissue.  
     
     
         29 . The method according to  claim 28 , wherein the material which fills each chamber is fluid free.  
     
     
         30 . The method according to  claim 28 , wherein the reflective particles comprise Teflon-PTFE, Titanium Dioxide (TiO 2 ) or are Polystyrene nanospheres.  
     
     
         31 . The method according to  claim 23 , wherein the light scattering and reflecting material is Teflon-PTFE.  
     
     
         32 . The method according to  claim 23 , wherein the configuration of the member to be reproducibly received comprises a stabilizing member extending from the chamber portion to reversibly urge other surfaces of the member into contact with the measuring receptor.  
     
     
         33 . The method according to  claim 32 , wherein the stabilizing member is as depicted in FIG. 9.

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