Anchoring mechanism for implantable telemetric medical sensor

• US 6,783,499 B2
• Filed: 06/08/2001
• Issued: 08/31/2004
• Est. Priority Date: 12/18/2000
• Status: Expired due to Term

• Current Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Original Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Inventors: Schwartz, Yitzhack
• Primary Examiner(s): Bennett, Henry
• Assistant Examiner(s): Odland, Kathryn
• Application Number:
  US09/877,673
• Publication Number:
  US 20020077556A1
• Time in Patent Office: 1,180 Days
• Field of Search: 600/486, 600/505, 600/325, 600/327, 600/332, 600/341, 600/377, 600/345, 600/437, 600/443, 600/485, 600/488, 600/587, 600/300, 600/483, 600/487, 600/561, 128/898, 128/903, 128/899, 606/108, 606/156, 606/151, 606/155, 606/213
• US Class Current: 600/486
• CPC Class Codes: A61B 1/00148 using anchoring means
• CPC Class Codes: A61B 2560/0219 of externally powered implanted units
• CPC Class Codes: A61B 2562/0233 Special features of optical sensors or probes classified in A61B5/00
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• 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 5/6882 Anchoring means
• CPC Class Codes: Y10S 128/903 Radio telemetry

Abstract

An implantable medical device comprises a housing having a proximal end and a distal end and a longitudinal axis. A first set of anchoring members are operatively connected to the proximal end of the housing. A second set of anchoring members are operatively connected to the distal end of the housing. The first set of anchoring members and the second set of anchoring members are movable between a collapsed position and a deployed position. The collapsed position is defined as a position whereby the first set of anchoring members and the second set of anchoring members are substantially parallel to the longitudinal axis of the housing. The deployed position is defined as a position whereby the first set of anchoring members and the second set of anchoring members are substantially perpendicular to the longitudinal axis of the housing. Each anchoring member of the first set of anchoring members and the second set of anchoring members comprise a ring member wherein each ring member has a tissue engaging surface thereon.

Claims

1. An implantable medical sensor for remotely sensing and measuring a parameter within a patient'"'"'s body, the sensor comprising:

a housing having a proximal end and a distal end and having a longitudinal axis and a deformable membrane fixed to one end of the housing, the membrane being deformably movable in direct correspondence to a change in a measured parameter within the patient'"'"'s body;

a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter, wherein the signal is a digital signal, the microchip comprising an array of photoelectric cells;

an LED for transmitting light at the photoelectric cells;

a shutter connected to the membrane and moveable between the photoelectric cells and the LED in response to deforming of the membrane;

a first set of anchoring members operatively connected to the proximal end of the housing; and

a second set of anchoring members operatively connected to the distal end of the housing;

the first set of anchoring members and the second set of anchoring members being movable between a collapsed position and a deployed position, the collapsed position being defined as a position whereby the first set of anchoring members and the second set of anchoring members are substantially parallel to the longitudinal axis of the housing and the deployed position being defined as a position whereby the first set of anchoring members and the second set of anchoring members are substantially perpendicular to the longitudinal axis of the housing, and wherein each anchoring member of the first set of anchoring members and the second set of anchoring members comprise a ring member, each ring member having a tissue engaging surface thereon.

2. The device according to claim 1, wherein the medical sensor is a telemetric device.

3. The device according to claim 1, wherein the ring member comprises shape memory material.

4. The device according to claim 3, wherein the material comprises Nitinol (NiTi).

5. The device according to claim 1, further comprising a resilient member connected to the ring member and the housing.

6. The device according to claim 5, wherein the resilient member comprises a spring for resiliently biasing the ring member.

7. The device according to claim 6, wherein the ring member comprises shape memory material.

8. The device according to claim 7, wherein the material comprises Nitinol (NiTi).

9. The device according to claim 1, wherein the collapsed position approximately ranges between 0°

-30°

from the longitudinal axis of the housing.

10. The device according to claim 9, wherein the deployed position approximately ranges between 40°

-90°

from the longitudinal axis of the housing.

11. The device according to claim 1, wherein the ring member comprises a complete loop.

12. The device according to claim 1, wherein the ring member comprises an incomplete loop.

13. The device according to claim 12, wherein the ring member comprises shape memory material.

14. The device according to claim 13, wherein the material comprises Nitinol (NiTi).

15. The device according to claim 12, wherein the ring member comprises shape memory metal material.

16. The device according to claim 15, wherein the material comprises Nitinol (NiTi).

17. The device according to claim 12, further comprising a resilient member connected to the ring member and the housing.

18. The device according to claim 17, wherein the resilient member comprises a spring for resiliently biasing the ring member to the housing.

19. The device according to claim 17, wherein the ring member has a concave profile.