Sensor wire assembly

• US 8,187,195 B2
• Filed: 10/12/2005
• Issued: 05/29/2012
• Est. Priority Date: 10/12/2005
• Status: Active Grant

• Current Assignee: St. Jude Medical Coordination Center BVBA (Abbott Laboratories Incorporated)
• Original Assignee: Radi Medical Systems AB (Abbott Laboratories Incorporated)
• Inventors: Tulkki, Sauli
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): DANEGA, RENEE A
• Application Number:
  US11/247,598
• Publication Number:
  US 20070106165A1
• Time in Patent Office: 2,421 Days
• Field of Search: 600/585, 600/486
• US Class Current: 600/486
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/6851 Guide wires

Abstract

Sensor wire assembly for measuring a physiological variable in a body, said assembly comprises a sensor element for measuring the physiological variable and to generate a sensor signal in response of said variable, and a guide wire having said sensor element at its distal end, and adapted to be inserted into the body in order to position the sensor element within the body. The assembly further comprises a sensor signal adapting circuitry, being an integrated part of said assembly, wherein the sensor signal is applied to the adapting circuitry that is adapted to automatically generate an output signal, related to the sensor signal, in a standardized format such that the measured physiological variable is retrievable by an external physiology monitor.

Claims

1. A sensor wire assembly for measuring a physiological variable in a body, said assembly comprising:

a sensor element configured to measure the physiological variable and to generate a sensor signal representative of said variable;

a guide wire having said sensor element at its distal portion, and adapted to be inserted into the body in order to position the sensor element within the body;

a wire connector provided with a guide wire receptacle tubing in which a proximal end of said guide wire is inserted, wherein a number of connector sockets are arranged along the tubing to be electrically connected to electrical connection points along an inserted part of the guide wire; and

a connecting cable configured to directly connect said wire connector to an external physiology monitor,

wherein the wire connector comprises a wire connector casing that encloses sensor signal adapting circuitry,

wherein the sensor signal adapting circuitry comprises a programmable sensor conditioning unit, a calibration unit, an energy device, and an output amplifying unit,

wherein the assembly is configured such that the sensor signal is provided to the sensor signal adapting circuitry, which is adapted to automatically generate an output signal, related to the sensor signal, in a standardized format such that the measured physiological variable is retrievable by said external physiology monitor via said connecting cable, and

wherein the wire connector casing is configured such that, in use, all information delivered to and transmitted from the wire connector is conveyed only by the guide wire and the connecting cable.

2. The sensor wire assembly according to claim 1, wherein said programmable sensor conditioning unit is a PGA309 programmable analog sensor conditioner.

3. The sensor wire assembly according to claim 1, wherein said sensor wire assembly further comprises a connecting device at one end of the connecting cable that is configured to directly connect to an input/output connector of the external physiology monitor.

4. The sensor wire assembly according to claim 1 wherein the guide wire is arranged at a distal part of the sensor wire assembly.

5. The sensor wire assembly according to claim 1, wherein said sensor signal adapting circuitry is energized via said physiology monitor.

6. The sensor wire assembly according to claim 1, wherein said sensor element is energized via said sensor signal adapting circuitry.

7. The sensor wire assembly according to claim 6, wherein said sensor element is energized by the energy device of the sensor signal adapting circuitry, wherein the energy device is an integrated part of the sensor wire assembly.

8. The sensor wire assembly according to claim 1, wherein said sensor wire assembly is adapted to be sterilized prior to usage.

9. The sensor wire assembly according to claim 1, wherein said standardized format is a BP22-standard or relevant parts of the BP22-standard.

10. The sensor wire assembly according to claim 1, wherein the calibration unit includes a storage device that contains individual calibration data obtained during calibration of the sensor element, performed for each individual sensor wire assembly, wherein the calibration is performed in connection with manufacture of the sensor wire assembly.

11. The sensor wire assembly according to claim 1, wherein the wire connector casing encloses a circuitry casing that in turn encloses the sensor signal adapting circuitry.

12. The sensor wire assembly according to claim 1, wherein the programmable sensor conditioning unit is a programmable analog sensor conditioner specially designed for bridge sensors.

13. The sensor wire assembly according to claim 1, wherein the sensor element is energized by another energy device that is an integrated part of the sensor wire assembly.

14. The sensor wire assembly according to claim 1, further comprising the external physiology monitor.

15. The sensor wire assembly according to claim 1, wherein the connector sockets of the wire connector are spaced along a longitudinal axis of the tubing of the wire connector.

16. The sensor wire assembly according to claim 1, wherein the sensor signal adapting circuitry is configured to generate the output signal in different formats, each format being compatible with a different type of external physiology monitor.

17. The sensor wire assembly according to claim 1, wherein the sensor signal adapting circuitry is configured to receive synchronization information from the external physiology monitor and in response provide conditioned, standardized output for the external physiology monitor.

18. The sensor wire assembly according to claim 1, wherein the wire connector is physically separate from the external physiology monitor.