Wireless Interface Devices, Systems, And Methods For Use With Intravascular Pressure Monitoring Devices

• US 20140180140A1
• Filed: 12/18/2013
• Published: 06/26/2014
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Original Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Inventors: Alpert, Howard David
• Granted Patent: US 10,820,813 B2
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 2562/18 Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61M 2025/0002 with a pressure sensor at the distal end

Abstract

Embodiments of the present disclosure are configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel. In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to collect and wirelessly distribute reliable pressure signals to other devices, and do so in a small, compact device that integrates with existing proximal and distal pressure measurement systems and does not require a separate power source.

Claims

1. An interface for intravascular pressure sensing devices, comprising:

a distal input configured to receive a distal pressure signal from a distal pressure sensing device;

a distal output configured to output the distal pressure signal to a hemodynamic system in a format useable by the hemodynamic system;

a proximal input configured to receive a proximal pressure signal from a proximal pressure sensing device;

a proximal output configured to output the proximal pressure signal to the hemodynamic system in a format useable by the hemodynamic system; and

a wireless transceiver coupled to the distal input, distal output, proximal input, and proximal output, the wireless transceiver being configured to wirelessly transmit the distal pressure and the proximal pressure to a computing system spaced from the interface, wherein the computing system is distinct from the hemodynamic system.

2. The interface of claim 1, wherein the distal input, distal output, proximal input, proximal output, and wireless transceiver are secured to a housing.

3. The interface of claim 2, wherein the housing has a width between 5 cm and 25 cm, a height between 5 cm and 25 cm, and a depth between 1 cm and 10 cm.

4. The interface of claim 3, wherein the distal pressure sensing device is a pressure-sensing guidewire.

5. The interface of claim 4, wherein the proximal pressure sensing device is a pressure-sensing catheter configured for use with the hemodynamic system.

6. The interface of claim 5, wherein the pressure-sensing catheter communicates with the hemodynamic system via at least four leads.

7. The interface of claim 6, wherein a first pair of leads of the at least four leads are associated with sending an excitation signal to the pressure-sensing catheter.

8. The interface of claim 7, further comprising a first amplifier electrically coupled with the first pair of leads, the first amplifier configured to sample the excitation signal.

9. The interface of claim 8, wherein the first amplifier sends the sampled excitation signal to the wireless transceiver.

10. The interface of claim 9, wherein a second pair of leads of the at least four leads are associated with sending the proximal pressure signal from the proximal pressure sensing device to the hemodynamic system.

11. The interface of claim 10, further comprising a second amplifier electrically coupled with the second pair of leads, the second amplifier configured to sample the proximal pressure signal.

12. The interface of claim 11, wherein the second amplifier sends the sampled proximal pressure signal to the wireless transceiver.

13. The interface of claim 1, further comprising a power extraction device coupled to a pair of leads that receive an excitation signal from the hemodynamic system, the power extraction device being configured to extract power from the excitation signal for use in operating at least the wireless transceiver.

14. The interface of claim 13, wherein the pair of leads are associated with a proximal pressure measurement input of the hemodynamic system.

15. The interface of claim 13, wherein the pair of leads are associated with a distal pressure measurement input of the hemodynamic system.

16. The interface of claim 1, wherein the wireless transceiver is further configured to wirelessly transmit identifying patient information with the distal pressure and the proximal pressure to the computing system.

17. A system for evaluating a vascular stenosis, the system comprising:

a distal pressure sensing device sized and shaped for insertion into human vasculature;

a proximal pressure sensing device sized and shaped for insertion into human vasculature; and

an interface comprising;

a distal input configured to receive a distal pressure signal from the distal pressure sensing device;

a proximal input configured to receive a proximal pressure signal from the proximal pressure sensing device;

a proximal output configured to output the proximal pressure signal to a processing system in a format useable by the processing system; and

a wireless transceiver coupled to the distal input, distal output, proximal input, and proximal output, the wireless transceiver being configured to wirelessly transmit the distal pressure and the proximal pressure to a computing system spaced from the interface, wherein the computing system is distinct from the processing system.

18. The system of claim 17, wherein the processing system is a hemodynamic system.

19. The system of claim 17, wherein the wireless transceiver is configured to wirelessly transmit the distal pressure and the proximal pressure using one of IEEE 802.11 Wi-Fi standards and Bluetooth standards.

20. The system of claim 17,

wherein the interface further includes a processor coupled to the distal input, distal output, proximal input, and proximal output, the processor configured to calculate a pressure differential between the distal pressure and the proximal pressure based on the received distal pressure signal and the received proximal pressure signal;

and

wherein the wireless transceiver is further configured to wirelessly transmit the pressure differential to a device spaced from the interface.

21. The system of claim 17, wherein the interface further comprises a distal output configured to output the distal pressure signal to a processing system in a format useable by the processing system.