Method for automatic stimulation of mammels in response to blood gas analysis

• US 5,423,327 A
• Filed: 04/25/1994
• Issued: 06/13/1995
• Est. Priority Date: 02/21/1989
• Status: Expired due to Fees

• Current Assignee: Illinois Technology Transfer LLC
• Original Assignee: Illinois Technology Transfer LLC
• Inventors: Clauson, William L., Imran, Nir A.
• Primary Examiner(s): Cohen, Lee S.
• Assistant Examiner(s): Casler, Brian L.
• Application Number:
  US08/232,603
• Time in Patent Office: 414 Days
• Field of Search: 128/633, 128/634, 128/664-666, 128/716, 128/721, 128/420-420.5, 128/421, 128/422, 128/632, 607/75, 607/145, 607/42, 607/62
• US Class Current: 600/322
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: A61N 1/3601 of respiratory organs
• CPC Class Codes: A61N 1/36031 using physiological parameters for adjustment
• CPC Class Codes: A61N 1/36034 specified by the stimulation parameters

Abstract

Method for automatic stimulation of a patient comprising sensing the saturation level or absolute or actual value of a predetermined gas in the blood of the patient and supplying an electrical signal representative of that measured saturation level, generating a control signal in response to the electrical signal when the measured saturation level falls below the predetermined value and automatically stimulating the patient when a control signal is received.

Claims

1. A method for the automatic stimulation of a patient comprising measuring a saturation level of a predetermined gas in the blood of the patient and supplying an electrical signal representative of the measured saturation level, generating a control signal in response to the electrical signal when the measured saturation level falls below a predetermined value automatically stimulating the patient, by applying stimuli having a frequency and amplitude at intervals of time when a control signal is received, continuing sensing of the saturation level to ascertain when the measured saturation level continues to fall indicating a worsening condition of the patient and automatically increasing the frequency and amplitude of the stimuli and decreasing the intervals of time between stimuli in accordance with the worsening condition of the patient.

2. A method as in claim 1 wherein the stimuli include physical stimulations.

3. A method as in claim 2 further comprising the steps of providing progressive stimulation to the patient as long as the measured saturation level falls below a predetermined value.

4. A method as in claim 3 wherein the progressive stimulation is carried out by supplying DC pulses to the patient.