Granted Patent B2

US 12,246,148 · App. 18/342,353 · Granted Mar 11, 2025

Inventors: Steven Kinio (Mississauga, CA); Gareth Davies (Toronto, CA); Laurentiu Murtescu (Maple, CA)

Assignee: Boston Scientific Medical Device Limited

A61M25/0606A61B17/32A61B17/34A61B17/3403A61B2090/0811A61M2205/0238A61M2205/0288A61M2205/3306A61M2205/3317A61M2205/50A61M2205/502A61M2205/587

Abstract

Claims (20)

1. A medical device comprising:

an elongate member having a proximal portion defining a proximal end, a distal portion defining a distal end, a sidewall extending longitudinally between the proximal end and the distal end and radially between an inner surface and an outer surface, and a lumen defined by the inner surface and extending longitudinally through the elongate member from the proximal end to the distal end;

an inductor comprising a coil embedded in the sidewall and wound around the lumen;

an excitation voltage source;

a resistor;

a capacitor; and

an output voltage sensor;

wherein the coil is electrically connectable to the excitation voltage source, the resistor, the capacitor, and the output voltage sensor to form an RLC circuit.

2. The medical device of claim 1 , wherein the inductor further comprises a magnetic core positioned radially inwardly of the coil and supported by the elongate member.

3. The medical device of claim 2 , wherein the magnetic core is embedded in the sidewall.

4. The medical device of claim 1 , wherein the coil extends continuously from the proximal portion to the distal portion.

5. The medical device of claim 1 , wherein the coil is positioned within the distal portion, proximate the distal end.

6. The medical device of claim 1 , further comprising a second inductor, the second inductor comprising a second coil embedded in the sidewall and wound around the lumen, wherein the second coil is spaced proximally from the coil of the RLC circuit, and wherein the second coil is electrically connectable to a second excitation voltage source, a second resistor, and a second output voltage sensor to form a second RLC circuit.

7. The medical device of claim 1 , further comprising a second medical device comprising a needle advanceable through the lumen from the proximal end towards the distal end, whereby as the needle is advanced through the lumen, an output voltage of the RLC circuit is an indicator of a longitudinal position of the needle with respect to the elongate member, and wherein the voltage sensor is configured to sense the output voltage of the RLC circuit and generate a sensor signal based on the output voltage.

8. The medical device of claim 7 , further comprising a processor in communication with the voltage sensor and configured to receive and process the sensor signal from the voltage sensor, and generate a processor signal based on the sensor signal.

9. The medical device of claim 8 , further comprising an output device in communication with the processor and configured to receive the processor signal and generate an output based on the processor signal, wherein the output is an indicator of the longitudinal position of the needle with respect to the elongate member.

10. The medical device of claim 9 , wherein the output device comprises at least one of a light and a display.

11. The medical device of claim 10 , wherein the output comprises illumination of the light when the needle is at a predetermined longitudinal position with respect to the elongate member.

12. The medical device of claim 7 , wherein the inductor further comprises a magnetic core, and the magnetic core is provided by a magnetic coating on the needle.

13. The medical device of claim 1 , wherein the coil extends continuously from the proximal portion to the distal portion.

Assignments (2)

Continuity (2)

References Cited (313)