APPARATUS AND METHODS FOR CONTROLLING AND AUTOMATING FLUID INFUSION ACTIVITIES

• US 20090177146A1
• Filed: 03/17/2009
• Published: 07/09/2009
• Est. Priority Date: 09/12/2005
• Status: Abandoned Application

• Current Assignee: Matthew T. Nesbitt, Michael E. Boehm, Paul J. Niklewski, Randy R. Stephens, Ross G. Krogh, Satyajeet V. Parakh
• Original Assignee: Matthew T. Nesbitt, Michael E. Boehm, Paul J. Niklewski, Randy R. Stephens, Ross G. Krogh, Satyajeet V. Parakh
• Inventors: Nesbitt, Matthew T., Krogh, Ross G., Parakh, Satyajeet V., Niklewski, Paul J., Stephens, Randy R., Boehm, Michael E.
• Application Number:
  US12/405,456
• Publication Number:
  US 20090177146A1
• Time in Patent Office: Days
• US Class Current: 604/66
• CPC Class Codes: A61M 39/28 Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: A61M 5/168 Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body flow control in general G05D7/00
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

The present invention provides apparatuses and methods to safely and economically deliver infusion fluid to a patient during a medical procedure. The infusion fluid may be a sedative, analgesic, amnestic or other pharmaceutical agent (drug) for alleviating a patient'"'"'s pain and anxiety before, during and/or after a medical or surgical procedure. In general the apparatus comprises a microprocessor-based controller that receives inputs from a plurality of physiological monitors attached to a patient. The system controller processes the data from the physiological monitors and based upon a fluid infusion algorithm delivers infusion fluid to a patient. The physiological monitors monitor the patient throughout the course of the procedure and depending upon the health of the patient, drug delivery may be adjusted to optimize the procedure while ensuring the patient'"'"'s health and pain level are maintained.

Claims

1. A system for providing an infusion fluid to a patient undergoing a medical or surgical procedure, the system comprising:

a. a plurality of physiological monitors adaptively coupled to the patient and generate corresponding signals representing the condition of the patient, including a pulse transit time value;

b. a supply source of the infusion fluid;

c. a flow regulator for controlling a supply of the infusion fluid; and

d. an electronic controller interconnected between the plurality of physiological monitors and the flow regulator;

wherein the electronic controller regulates the flow regulator in response to the pulse transit time signal.

2. The system of claim 1, wherein the plurality of physiological monitors is chosen from the group consisting of pulse oximetry, blood pressure, capnography, electrocardiogram, electroencephalogram, respiration rate, temperature, patient responsiveness, concentration of respired gases and pain.

3. The system of claim 1, wherein the electronic controller causes the flow regulator to increase the supply of the infusion fluid upon sensing a decrease from a first value to a second value of the pulse transit time signal.

4. The system of claim 1, wherein the electronic controller causes the flow regulator to decrease the supply of the infusion fluid upon sensing an increase from a first value to a second value of the pulse transit time signal.

5. The system of claim 1, wherein the controller comprises means for inputting an infusion profile into the controller.

6. The system of claim 1, wherein the infusion fluid is an analgesic.

7. The system of claim 6, where the infusion fluid further includes a sedative.