INTEGRATED STENT AND BLOOD ANALYTE MONITORING SYSTEM

• US 20090043183A1
• Filed: 08/08/2007
• Published: 02/12/2009
• Est. Priority Date: 08/08/2007
• Status: Abandoned Application

• Current Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: KERMANI, Mahyar Z., Milledge, Eric
• Application Number:
  US11/835,992
• Publication Number:
  US 20090043183A1
• Time in Patent Office: Days
• US Class Current: 600/365
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants

Abstract

An integrated stent and blood analyte monitoring system includes a stent configured for implantation into a cardiovascular system of a user'"'"'s body and a blood analyte monitoring system. The blood analyte monitoring system includes a continuous blood analyte determination module attached to the stent and a reader module configured for disposition external to the user'"'"'s body and proximal to a portion of the user'"'"'s skin layer. The continuous blood analyte determination module has a sensor for determining the concentration of a blood analyte (e.g., blood glucose concentration) and a reflection antenna with a switch. The reader module is configured to emit an RF carrier signal toward the stent. The reflection antenna is configured to receive the RF carrier signal and reflect a modulated signal that has been modulated by the switch to encode an analyte concentration determined by the sensor. Furthermore, the reader module is configured to receive the modulated signal and decode the analyte concentration therefrom.

Claims

1. A system for integrated facilitization of blood flow and blood analyte monitoring comprising:

a stent configured for implantation into a cardiovascular system of a user'"'"'s body, the stent having a longitudinal centerline; and

a blood analyte monitor system that includes;

a continuous blood analyte determination module attached to the stent, the continuous blood analyte determination module having;

a sensor configured for determining the concentration of a blood analyte; and

a reflection antenna with a switch; and

a reader module configured for disposition external to the user'"'"'s body and proximal to a portion of the user'"'"'s skin layer, the reader module configured to emit an RF carrier signal toward the stent,

wherein the reflection antenna is configured to receive the RF carrier signal and reflect a modulated signal,

wherein the modulated signal has been modulated by the switch such that the modulated signal encodes an analyte concentration determined by the sensor, and

wherein the reader module is configured to receive the modulated signal and decode the analyte concentration therefrom.

2. The system of claim 1 wherein the stent includes a material that inhibits at least one of blood clotting, tissue build-up and an immune response of the user.

3. The system of claim 1 wherein the blood analyte monitoring system is a blood glucose monitoring system.

4. The system of claim 1 wherein the stent is configured to be implanted such that the stent centerline is essentially perpendicular to the portion of the user'"'"'s skin layer.

5. The system of claim 4 wherein the reader module includes a first antenna and a second antenna and wherein the first antenna and second antenna are configured such that an RF carrier signal angle β

and a modulated signal angle α

are both less than about 30 degrees with respect to the stent center line.

6. The system of claim 5 wherein the first antenna is separated from the second antenna by a distance in the range of about 5 millimeters to about 50 millimeters.

7. The system of claim 1 wherein the stent is configured to be implanted such that the stent centerline is essentially parallel to the portion of the user'"'"'s skin layer.

8. The system of claim 7 wherein the reader module includes a first antenna and a second antenna and wherein the first antenna and second antenna are configured such that an RF carrier signal angle β

and a modulated signal angle α

are both approximately 90 degrees with respect to the stent center line.

9. The system of claim 8 wherein the first antenna is separated from the second antenna by a distance in the range of about 5 millimeters to about 50 millimeters.

10. The system of claim 1, wherein said reader module is configured to be disposed immediately adjacent to the portion of the user'"'"'s skin layer.

11. The system of claim 1 wherein the stent are reflection antenna are unified such that the stent serves as the reflection antenna.