Instrumented retrievable implantable device

• US 20060100531A1
• Filed: 12/16/2005
• Published: 05/11/2006
• Est. Priority Date: 06/17/2003
• Status: Active Grant

• Current Assignee: Raymond Moser
• Original Assignee: Raymond Moser
• Inventors: Moser, Raymond
• Granted Patent: US 7,801,626 B2
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/076 Permanent implantations telemetry using implanted circuitry A61B5/0031; implanted stimulators for therapy A61N1/3605, A61N1/362, A61N1/372
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61B 5/6862 Stents
• CPC Class Codes: A61B 5/6876 Blood vessel
• CPC Class Codes: A61B 5/6886 Monitoring or controlling distance between sensor and tissue

Abstract

Instrumented retrievable implantable device (2), comprising an expandable section, for placement inside a body lumen, preferably in a blood vessel. The device (2) comprises a joined sensor (70) for monitoring one or more physiological parameter for diagnostic or therapeutic purposes. Data access is assured by a passive RF transponder, in communication with an external readout unit or an implanted device, providing as well to the energy supply of the sensor (70). The shape of the device of the invention (2) allows repositioning and retrieval by micro-invasive methods, by means of a link section (20) capable of being coupled with a grabbing device (45) mounted on a catheter (40).

Claims

1. Implantable intraluminal or intravascular device, comprising:

an expandable section having a variable dimension, said variable dimension allowing a compressed value for delivery to said body lumen and an expanded value, larger than said compressed value, for implantation in said body lumen;

a link section, at one end of said device comprising a grip, for detachably joining said device to a catheter, and for applying an axial force on said device;

at least one sensor joined to said device;

wherein said device is arranged for reacting to an axial pulling force to said grip, by assuming said compressed value of said variable dimension, for retrieval or repositioning of at least part of said implantable device.

2. The implantable intraluminal or intravascular device of claim 1, wherein said sensor is permanently joined to said device.

3. The implantable intraluminal or intravascular device of claim 1, comprising an attachment site, for connecting a removable part thereto.

4. The implantable intraluminal or intravascular device of claim 1, comprising an elongated core and a plurality of elastic struts having a released configuration, in which said elastic struts radially protrude from said elongated core, and a compressed position, in which said elastic struts are closer to said elongated core.

5. The implantable intraluminal or intravascular device of claim 1, comprising a tubular mesh of elastic wire, whose diameter allows a compressed value and an expanded value, larger than said compressed value.

6. The implantable intraluminal or intravascular device of claim 1, comprising a plurality of curved smooth membranes, parallel to the main axis of said device, allowing essentially unobstructed fluid flow through said body lumen.

7. The implantable intraluminal or intravascular device of claim 1, comprising a plurality of flexible lateral surfaces, for anchoring said device within said body lumen, bendably joined by a plurality of radial connection elements allowing a compressed configuration having a lateral dimension and an expanded configuration having a lateral dimension, larger than said lateral dimension of said compressed configuration.

8. The implantable intraluminal or intravascular device of claim 1, comprising an elongated core and at least one flexible wire comprising straight and bent sections, whose flexibility allows a compressed configuration having a lateral dimension and an expanded configuration having a lateral dimension, larger than said lateral dimension of said compressed configuration.

9. The implantable intraluminal or intravascular device of claim 1, wherein at least a part of said sensor is flexibly connected to said device, by a flexible tether.

10. The implantable intraluminal or intravascular device of claim 1, wherein said sensor, includes a communication device to communicate with an external readout unit and/or to communicate with another implanted device by a wireless link.

11. The implantable intraluminal or intravascular device of claim 10, wherein said wireless link also provides energy supply for said sensor.

12. The implantable intraluminal or intravascular device of claim 10, further comprising a reservoir, which can selectively be put in fluid communication with said body lumen upon a command received on said wireless link.

13. The implantable intraluminal or intravascular device of claim 1, further comprising at least one release means, for releasing at least one substance comprised in said release means.

14. The implantable intraluminal or intravascular device of claim 1, wherein said grip comprises a head having a transversal dimension, and a neck connecting said head to said device, having a dimension smaller than said transversal dimension of said head.

15. The implantable intraluminal or intravascular device of claim 1, wherein said grip is connected to said device by at least one wire.

16. The implantable intraluminal or intravascular device of claim 1, wherein said grip comprises a loop of wire.

17. The implantable intraluminal or intravascular device of claim 1, further comprising an embolic protection device.

18. The implantable device of claim 17, wherein said embolic protection device comprises filter means for retaining embolic particles.

19. The implantable intraluminal or intravascular device of claim 1, wherein said sensor comprises at least one of:

a temperature sensor;

a pressure sensor;

a chemical sensor, a fluid flow sensor, an ECG sensor, a pH sensor, an electrolyte sensor, a wireless communication device.

20. Apparatus for positioning an implantable device according to claim 1, comprising:

a flexible catheter, inserted into a flexible sleeve;

a grasp section, fixed to the tip of said catheter, for cooperating with said link section of said implantable device, said grasp section comprising at least two opposed flexible fingers;

said flexible sleeve interacting with said flexible fingers for opening and closing them on said link section of said implantable device, and interacting with an expandable section of said implantable device for reducing a variable dimension of said implantable device.

25. The method of claim 22, wherein said steps of delivering and said step of retrieving are carried out with the apparatus of claim 20.

21. A combination of:

an implantable intraluminal or intravascular device and an apparatus for positioning said implantable device,

said implantable device comprising;

an expandable section having a variable dimension, said variable dimension allowing a compressed value for delivery to said body lumen and an expanded value, larger than said compressed value, for implantation in said body lumen;

a link section, at one end of said device comprising a grip, for joining said device to a catheter, and for applying an axial force on said device;

at least a sensor joined to said device;

said apparatus comprising;

a flexible catheter, inserted into a flexible sleeve;

a grasp section, fixed to the tip of said catheter, for cooperating with said link section of said implantable device, said grasp section comprising at least two opposed flexible fingers;

said flexible sleeve interacting with said flexible fingers for opening and closing them on said link section;

wherein said flexible sleeve interacts with said implantable device by forcing it to assume said compressed value of said variable dimension, when said device is pulled by said flexible catheter into said flexible sleeve.

22. Method for sensing a parameter within a body lumen, comprising:

a step of delivering an implantable device comprising a miniaturized sensor in said body lumen;

a step of expanding said implantable device for anchoring it in said body lumen;

a step of contactless reading the value measured by said miniaturized sensor;

a step of retrieving said implantable device;

23. The method of claim 22, wherein said step of contactless reading comprises transmitting said value on a wireless link, said wireless link also providing energy for the functioning of said sensor.

24. The method of claim 22, wherein said device is implanted within a stent in said body lumen.