Acoustic line tracing system and method for fluid transfer system

• US 9,359,885 B2
• Filed: 03/15/2013
• Issued: 06/07/2016
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Slepicka, James Scott, Dudar, Thomas Edward
• Primary Examiner(s): Saint Surin, J M
• Application Number:
  US13/837,417
• Publication Number:
  US 20140262252A1
• Time in Patent Office: 1,180 Days
• Field of Search: 736/49, 166/255.2
• US Class Current: 1/1
• CPC Class Codes: A61M 2039/087 Tools for handling tubes, e.g. crimping tool for connecting tubes to a connector
• CPC Class Codes: A61M 2039/1005 Detection of disconnection
• CPC Class Codes: A61M 2039/1044 Verifying the connection, e.g. audible feedback, tactile feedback, visual feedback, using external light sources
• CPC Class Codes: A61M 2205/0294 Piezoelectric materials
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: A61M 2205/6009 for matching patient with his treatment, e.g. to improve transfusion security
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 39/08 Tubes; Storage means specially adapted therefor
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• 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 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14212 Pumping with an aspiration and an expulsion action
• 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 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: E21B 47/095 by detecting an acoustic anomalies, e.g. using mud-pressure pulses
• CPC Class Codes: G01N 2291/023 : Solids
• CPC Class Codes: G01N 2291/0289 : Internal structure, e.g. defects, grain size, texture
• CPC Class Codes: G01N 29/04 : Analysing solids using acoustic emission techniques G01N29/14
• CPC Class Codes: G01N 29/2437 : Piezoelectric probes
• CPC Class Codes: G08B 7/06 : using electric transmission , e.g. involving audible and visible signalling through the use of sound and light sources

Abstract

An acoustic line tracing system for tracing a fluid transfer system tubing line includes an acoustic receiver operably connectable to the tubing line and configured to receive the vibratory signal. The acoustic receiver includes a vibration sensor disposed to contact the tubing line and configured for detecting vibration of the surface of the tubing line caused by the vibratory signal, and an indicator producing at least one of an audio and a visual cue when the vibration sensor detects the vibratory signal.

Claims

1. An acoustic line tracing system for tracing a fluid transfer system tubing line, the tracing system comprising:

an infusion pump;

a first acoustic receiver operably connectable to the tubing line and configured to receive a vibratory signal, the first acoustic receiver including;

a first vibration sensor disposed to contact the tubing line, said first vibration sensor being configured for detecting vibration of the surface of the tubing line caused by the vibratory signal;

a signal transmitter operatively contacting the tubing set and electrically coupled with said first acoustic receiver, said signal transmitter configured for generating acoustic vibrations in the tubing line when said first vibration sensor detects the vibratory signal; and

a second acoustic receiver connectable to the tubing line and configured for receiving the acoustic vibrations generated by said signal transmitter, said second acoustic receiver including;

a second vibration sensor disposed to contact the tubing line, said second vibration sensor being configured for detecting vibrations in the surface of the tubing line caused by the acoustic vibrations; and

an indicator producing at least one of an audio and a visual cue when said second vibration sensor detects the vibratory signal;

wherein the first acoustic receiver is upstream from the infusion pump and the signal transmitter is downstream from the infusion pump for reducing dampening of the vibratory signal by the infusion pump.

2. The acoustic line tracing system of claim 1, wherein each said vibration sensor is a piezoelectric device.

3. The acoustic line tracing system of claim 1, wherein each said vibration sensor is a microphone.

4. The acoustic line tracing system of claim 1, wherein said indicator is a light emitting diode, and wherein said diode emits light when said second vibration sensor detects the vibratory signal.

5. The acoustic line tracing system of claim 1, wherein said indicator is a speaker, and wherein said speaker emits an audible tone when said second vibration sensor detects the vibratory signal.

6. The acoustic line tracing system of claim 1, wherein said signal transmitter includes a piezoelectric device configured to generate ultrasonic acoustic vibrations.

7. The acoustic line tracing system of claim 1, wherein said signal transmitter is configured for communicating one or more characteristics of the vibratory signal to said second acoustic receiver.

8. The acoustic line tracing system of claim 7, wherein said one or more characteristics is at least one of a frequency, a range of frequencies, an amplitude, a range of amplitudes, a signal timing, and a particular signal pattern.

9. An acoustic line tracing system for verifying continuity of a tubing set in an infusion system, the line tracing system comprising:

an infusion pump;

a first acoustic receiver connectable to the tubing line and configured for receiving a vibratory signal, the first acoustic receiver including a first vibration sensor disposed to contact the tubing line, said first vibration sensor being configured for detecting vibration of the surface of the tubing line caused by the vibratory signal;

a signal transmitter within a housing of the infusion pump and operatively contacting the tubing set and electrically coupled with said first acoustic receiver, said signal transmitter configured for generating acoustic vibrations in the tubing line when said first vibration sensor detects the vibratory signal; and

a second acoustic receiver connectable to the tubing line and configured for receiving the acoustic vibrations generated by said signal transmitter, said second acoustic receiver including;

a second vibration sensor disposed to contact the tubing line, said second vibration sensor being configured for detecting vibrations in the surface of the tubing line caused by the acoustic vibrations; and

an indicator producing at least one of an audio and a visual cue when said second vibration sensor detects the vibrations;

wherein said first acoustic receiver and said signal transmitter are separated by the infusion pump for reducing dampening of the vibratory signal by the infusion pump.

10. The acoustic line tracing system of claim 9, wherein each said vibration sensor is a piezoelectric device.

11. The acoustic line tracing system of claim 9, wherein each said vibration sensor is a microphone.

12. The acoustic line tracing system of claim 9, wherein said indicator is a light emitting diode, and wherein said diode emits light when said second vibration sensor detects the vibratory signal.

13. The acoustic line tracing system of claim 9, wherein said signal transmitter includes a piezoelectric device configured to generate ultrasonic acoustic vibrations.

14. A method for determining continuity of a tubing set comprising steps of:

providing;

a first acoustic receiver operably connectable to the tubing line and configured for receiving a vibratory signal, the first acoustic receiver including a first vibration sensor disposed to contact the tubing line, said first vibration sensor being configured for detecting vibration of the surface of the tubing line caused by the vibratory signal;

a signal transmitter operatively contacting the tubing set and electrically coupled with said first acoustic receiver, said transmitter configured for generating acoustic vibrations in the tubing line when said first vibration sensor detects the vibratory signal; and

a second acoustic receiver in contact with the tubing set at a first position along the tubing set, and connectable to the tubing line and configured for receiving the acoustic vibrations generated by said signal transmitter, said second acoustic receiver including a second vibration sensor operatively contacting the tubing set and configured for sensing vibrations in the tubing set, and an indicator capable of producing at least one of an audio and a visual cue when said second vibration sensor detects the vibrations;

inducing the vibratory signal at a second position along the tubing set;

detecting, by said second acoustic receiver, whether or not the vibratory signal is received at said first position along the tubing set; and

determining whether the tubing set is continuous between the first position and the second position, wherein the tubing set is determined to be continuous if said second vibration sensor detects the vibratory signal at said detecting step, wherein said indicator produces said cue when it is determined that the tubing set is continuous;

wherein the first acoustic receiver is upstream from an infusion pump and the signal transmitter is downstream from the infusion pump to reduce dampening of the vibratory signal by the infusion pump.

15. The method of claim 14, wherein the signal transmitter is in contact with the tubing set at said second position, said transmitter performing said inducing step.

16. The method of claim 15, further comprising steps of:

communicating one or more characteristics of the vibratory signal from said transmitter to said second acoustic receiver; and

comparing the one or more communicated characteristics with the vibratory signal received during said detecting step,

wherein said determining step determines that the tubing set is continuous if said received signal matches said one or more communicated characteristics.

17. The method of claim 14, wherein said inducing step includes manually inducing the vibratory signal by a clinician tapping the tubing set.