Infusion tubing tracing system using vibration generator and vibration sensor
A system for tracing tubing which forms a conduit from a source of infusion liquid to a patient by way of an infusion pump has a vibration generator manually operable by a user to generate vibrations at an origin location along the tubing, wherein the vibrations are propagated by the tubing and have a vibration signature. A vibration sensor arranged at a destination location along the tubing receives the vibrations and generates a digital vibration signal. Signal processing circuitry connected to the vibration sensor processes and evaluates the digital vibration signal to determine a trace status of the tubing between the vibration generator and the vibration sensor. An indicator connected to the signal processing circuitry provides an indication of the determined trace status. Trace status possibilities include clear, cross-over, and null. A likely number of cross-overs may also be indicated.
1. A system for tracing tubing which forms a conduit from a source of infusion liquid to a patient by way of an infusion pump, the system comprising:
a vibration generator manually operable by a user to generate vibrations at an origin location along the tubing, wherein the vibrations are propagated by the tubing and have a vibration signature;
a vibration sensor arranged at a destination location along the tubing for receiving the propagated vibrations and generating a digital vibration signal representative of the received vibrations;
signal processing circuitry connected to the vibration sensor, wherein the signal processing circuitry is configured to process and evaluate the digital vibration signal to determine a trace status of the tubing between the vibration generator and the vibration sensor, wherein the signal processing circuitry determines a cross-over trace status when the tubing is touched by other tubing; and
an indicator connected to the signal processing circuitry, wherein the indicator is configured to provide an audible or visual indication of the determined trace status.
2. The system according to claim 1 , wherein one of the vibration generator and the vibration sensor is removably attachable to the tubing at a selected location along the tubing, and the other of the vibration generator and the vibration sensor is part of the pump.
3. The system according to claim 2 , wherein the vibration generator is removably attachable to the tubing at a selected origin location along the tubing, and the vibration sensor is part of the pump.
4. The system according to claim 3 , wherein the indicator and the signal processing circuitry are part of the pump.
5. The system according to claim 3 , wherein the selected origin location is between the source of infusion liquid and the pump.
6. The system according to claim 3 , wherein the selected origin location is between the patient and the pump.
7. The system according to claim 2 , wherein the vibration generator is part of the pump, and the vibration sensor is removably attachable to the tubing at a selected destination location along the tubing.
8. The system according to claim 7 , wherein the indicator and the signal processing circuitry are housed with the vibration sensor for removable attachment to the tubing.
9. The system according to claim 7 , wherein the selected destination location is between the pump and the patient.
10. The system according to claim 7 , wherein the selected destination location is between the pump and the source of infusion liquid.
11. The system according to claim 1 , wherein the vibration generator is removably attachable to the tubing at a selected origin location along the tubing, and the vibration sensor is removably attachable to the tubing at a selected destination location along the tubing.
12. The system according to claim 1 , wherein the determined trace status is selected from a status group consisting of a clear trace status, the cross-over trace status, and a null trace status.
13. A system for tracing tubing which forms a conduit from a source of infusion liquid to a patient by way of an infusion pump, the system comprising:
a vibration generator manually operable by a user to generate vibrations at an origin location along the tubing, wherein the vibrations are propagated by the tubing and have a vibration signature;
a vibration sensor arranged at a destination location along the tubing for receiving the propagated vibrations and generating a digital vibration signal representative of the received vibrations;
signal processing circuitry connected to the vibration sensor, wherein the signal processing circuitry is configured to process and evaluate the digital vibration signal to determine a trace status of the tubing between the vibration generator and the vibration sensor; and
an indicator connected to the signal processing circuitry, wherein the indicator is configured to provide an audible or visual indication of the determined trace status;
wherein the determined trace status is selected from a status group consisting of a clear trace status, a cross-over trace status, and a null trace status; and
wherein the signal processing circuitry is configured to process and evaluate the digital vibration signal to determine a likely number of cross-overs as part of the cross-over trace status.
14. A system for tracing first tubing which forms a conduit from a first source of infusion liquid to a patient by way of a first infusion pump and second tubing which forms a conduit from a second source of infusion liquid to the patient or to another patient by way of a second infusion pump, the system comprising:
a first vibration generator manually operable by a user to generate first vibrations at an origin location along the first tubing, wherein the first vibrations are propagated by the first tubing and have a first vibration signature;
a second vibration generator manually operable by a user to generate second vibrations at an origin location along the second tubing, wherein the second vibrations are propagated by the second tubing and have a second vibration signature;
a vibration sensor arranged at a location along the second tubing, wherein the first vibrations are also propagated by the second tubing if there is a cross-over of the first tubing with the second tubing such that the first tubing touches the second tubing, the vibration sensor receiving the first and second vibrations propagated by the second tubing and generating a digital vibration signal representative of the received vibrations;
signal processing circuitry connected to the vibration sensor, wherein the signal processing circuitry is configured to process and evaluate the digital vibration signal to determine whether the received vibrations have a vibration signature corresponding to the second vibration signature; and
an indicator connected to the vibration sensor, the indicator being configured to provide an audible or visual indication of the cross-over in response to the digital vibration signal.
15. The system according to claim 14 , wherein the indication informs a user as to whether or not the vibration signature of the received vibrations corresponds to the second vibration signature.