Arterial pressure sensing device

• US 20080281210A1
• Filed: 01/25/2008
• Published: 11/13/2008
• Est. Priority Date: 01/26/2007
• Status: Abandoned Application

• Current Assignee: Endotronix, Inc.
• Original Assignee: Endotronix, Inc.
• Inventors: Nunez, Anthony I., Rowland, Harry D.
• Application Number:
  US12/011,501
• Publication Number:
  US 20080281210A1
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 2562/028 Microscale sensors, e.g. electromechanical sensors [MEMS]
• CPC Class Codes: A61B 5/02158 provided with two or more sensor elements
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61M 2205/0244 Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3327 Measuring
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2230/208 pH-value
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 2230/63 Motion, e.g. physical activity

Abstract

An implantable medical device including a tubular housing defining a passage between a proximal end and a distal end of the housing. The passage providing fluid communication through the housing. A sensing unit is positioned within the passage and coupled to the housing. The sensing unit is configured to sense at least one of a physical, chemical, and physiological parameter within the passage.

Claims

1. An implantable medical device comprising:

a tubular housing defining a passage between a proximal end and a distal end of said housing, said passage providing fluid communication through said housing; and

a sensing unit positioned within said passage and coupled to said housing, said sensing unit configured to sense at least one of a physical, chemical, and physiological parameter within said passage.

2. An arterial pressure sensor device in accordance with claim 1 wherein said housing further comprises:

a distal retainer coupled to said housing at a midsection of said housing; and

a proximal retainer initially coupled to said housing at said proximal end, with said housing positioned within a tissue, said proximal end contacts a skin surface and said distal retainer contacts a vessel wall to retain said housing positioned within the tissue.

3. An implantable medical device in accordance with claim 1 wherein said housing is affixed within a tissue using a biocompatible adhesive including one of an acrylic-based adhesive, an epoxy-based adhesive, a polyurethane-based adhesive, and a silicon-based adhesive.

4. An implantable medical device in accordance with claim 1 wherein said sensing unit comprises at least one sensor coupled to said housing.

5. An implantable medical device in accordance with claim 4 wherein said at least one sensor comprises one of a pressure sensor, an optical sensor, a biochemical sensor, a protein sensor, a motion sensor, an accelerometer, a gyroscope, a temperature sensor, a chemical sensor, a pH sensor, and a genetic sensor.

6. An implantable medical device in accordance with claim 4 wherein said at least one sensor is fabricated using a microelectromechanical systems (MEMS) technology.

7. An implantable medical device in accordance with claim 1 further comprising a void formed in an inner surface of said housing, said void configured to receive a corresponding sensor of said at least one sensor.

8. An implantable medical device in accordance with claim 7 wherein said sensor is coupled within said corresponding void to said inner surface using one of an acrylic-based adhesive, an epoxy-based adhesive, a polyurethane-based adhesive, and a silicon-based adhesive.

9. An implantable medical device in accordance with claim 7 wherein said at least one sensor is coupled to said housing using one of a chemical bonding process, a heat bonding process, a soldering process, a suturing process, and an outer packaging material.

10. An implantable medical device in accordance with claim 1 wherein said sensing unit is configured to facilitate obtaining data for at least one of arterial pressure analysis, temperature analysis, blood chemical analysis, blood osmolar analysis, and cellular count analysis, said sensing unit further configured to generate and transmit measurement data wirelessly to an external receiver.

11. An implantable medical device in accordance with claim 1 wherein said sensing unit further comprises a substrate and at least one sensor coupled to said substrate.

12. An implantable medical device in accordance with claim 1 wherein said sensing unit is removably positioned within said housing.

13. An arterial pressure sensor device comprising:

a tubular housing defining a passage between a proximal end and a distal end of said housing, said passage providing fluid communication through said housing; and

a sensing unit positioned within said passage and coupled to said housing, said sensing unit configured to sense a pressure within said passage corresponding to an arterial pressure.

14. An arterial pressure sensor device in accordance with claim 13 wherein said housing further comprises:

a distal retainer coupled to said housing at a midsection of said housing; and

a proximal retainer initially coupled to said housing at said proximal end.

15. An arterial pressure sensor device in accordance with claim 14 wherein with said housing positioned within a tissue, said proximal end contacts a skin surface and said distal retainer contacts a vessel wall to retain said housing positioned within the tissue.

16. An arterial pressure sensor device in accordance with claim 14 wherein said distal retainer is positioned within a vessel and contacts an inner surface of a wall of the vessel, with said distal retainer positioned within the vessel, said housing provides fluid communication between the vessel and an external device.

17. An arterial pressure sensor device in accordance with claim 16 wherein said external device comprises one of a medical instrument positioned within said passage and a tubing operatively coupled to said proximal end of said housing.

18. An arterial pressure sensor device in accordance with claim 14 wherein said proximal retainer is movable with respect to said distal retainer to facilitate retaining said housing positioned within the tissue.

19. An arterial pressure sensor device in accordance with claim 18 wherein said proximal retainer is one of slidably movable and rotationally movable along a length of said housing with respect to said distal retainer.

20. An arterial pressure sensor device in accordance with claim 18 further comprising a first plurality of teeth formed on an outer surface of said housing and at least one second tooth formed on said proximal retainer cooperating with one tooth of said first plurality of teeth to adjustably position said proximal retainer with respect to said distal retainer.

21. An arterial pressure sensor device in accordance with claim 18 wherein said proximal retainer is adjustably positioned with respect to said distal retainer to apply a compressive force on the tissue to retain said housing positioned within the tissue.

22. An arterial pressure sensor device in accordance with claim 13 wherein said housing is affixed within a tissue using one of an acrylic-based adhesive, an epoxy-based adhesive, a polyurethane-based adhesive, and a silicon-based adhesive.

23. An arterial pressure sensor device in accordance with claim 13 wherein said sensing unit comprises at least one sensor coupled to said housing.

24. An arterial pressure sensor device in accordance with claim 23 wherein said at least one sensor comprises one of a pressure sensor, an optical sensor, a biochemical sensor, a protein sensor, a motion sensor, an accelerometer, a gyroscope, a temperature sensor, a chemical sensor, a pH sensor, and a genetic sensor.

25. An arterial pressure sensor device in accordance with claim 23 further comprising a void formed in an inner surface of said housing, said void configured to receive a corresponding sensor of said at least one sensor.

26. An arterial pressure sensor device in accordance with claim 25 wherein said at least one sensor is coupled within a corresponding void to said inner surface using one of an acrylic-based adhesive, an epoxy-based adhesive, a polyurethane-based adhesive, and a silicon-based adhesive.

27. An arterial pressure sensor device in accordance with claim 23 wherein said at least one sensor is coupled to said housing using one of a chemical bonding process, a heat bonding process, a soldering process, a suturing process, and an outer packaging material.

28. An arterial pressure sensor device in accordance with claim 23 wherein said at least one sensor is fabricated using a microelectromechanical systems (MEMS) technology.

29. An arterial pressure sensor device in accordance with claim 13 wherein said sensing unit is configured to facilitate obtaining data for at least one of arterial pressure analysis, temperature analysis, blood chemical analysis, blood osmolar analysis, and cellular count analysis, said sensing unit further configured to generate and transmit measurement data wirelessly to an external receiver.

30. An arterial pressure sensor device in accordance with claim 13 wherein said sensing unit further comprises a substrate and at least one sensor coupled to said substrate.

31. An arterial pressure sensor device in accordance with claim 13 wherein said sensing unit is removably positioned within said housing.

32. An implantable medical device comprising:

a tubular conduit defining a passage between a proximal end and a distal end of said conduit, said passage providing fluid communication through said conduit; and

a sensing unit positioned within said passage and coupled to said conduit, said sensing unit comprising at least one sensor configured to sense at least one of a physical, chemical, and physiological parameter to facilitate obtaining diagnostic data, said sensing unit configured to transmit the diagnostic data wirelessly to an external receiver.

33. An implantable medical device in accordance with claim 32 wherein said at least one sensor comprises at least one of a pressure sensor, an optical sensor, a biochemical sensor, a protein sensor, a motion sensor, an accelerometer, a gyroscope, a temperature sensor, a chemical sensor, a pH sensor, or a genetic sensor.

34. An implantable medical device in accordance with claim 32 wherein said sensing unit further comprises a substrate, each sensor of said at least one sensor coupled to said substrate.

35. An implantable medical device in accordance with claim 32 wherein said sensing unit is positioned within said conduit by an endovascular process.

36. A method for fabricating an implantable medical device, said method comprising:

fabricating a tubular housing defining a passage between a proximal end and a distal end of the housing;

positioning a sensing unit within the passage; and

coupling the sensing unit to the housing, the sensing unit configured to sense at least one of a physical, chemical, and physiological parameter within the passage.

37. A method in accordance with claim 36 wherein coupling the sensing unit to the housing comprises coupling at least one sensor of the sensing unit to the housing.

38. A method in accordance with claim 37 wherein the at least one sensor is positioned within a corresponding void formed in an inner surface of the housing.

39. A method in accordance with claim 38 wherein the sensor is coupled within the corresponding void to the inner surface using one of an acrylic-based adhesive, an epoxy-based adhesive, a polyurethane-based adhesive, and a silicon-based adhesive.

40. A method in accordance with claim 38 wherein the at least one sensor is coupled to the housing using one of a chemical bonding process, a heat bonding process, a soldering process, a suturing process, and an outer packaging material.

41. A method in accordance with claim 36 wherein the sensing unit is removably positioned within the housing.

42. An implantable device comprising a housing, said housing comprising:

a first sheet of material having a first surface defining a void therein, an electrically conducting surface patterned in said void formed in said first surface; and

a second sheet of material sealingly coupled to said first surface to enclose said void and form a hermetically sealed cavity, said second sheet of material patterned with electrically functional components, and said second sheet of material sealingly coupled to said first surface to form said housing defining a passage and a sensor configured to sense at least one of a physical, chemical, and physiological parameter within the passage.