Smart microfluidic device with universal coating

• US 6,592,519 B1
• Filed: 04/28/2000
• Issued: 07/15/2003
• Est. Priority Date: 04/28/2000
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Martinez, Gonzalo
• Primary Examiner(s): Huson, Gregory L.
• Assistant Examiner(s): WIEKER, AMANDA FLYNN
• Application Number:
  US09/561,479
• Time in Patent Office: 1,173 Days
• Field of Search: 604/890--89, 604/246, 604/288.01, 604/288.04, 604/503, 604/65-67, 604/19, 600/309, 600/317, 600/341, 600/365
• US Class Current: 600/309
• CPC Class Codes: A61B 2562/02 Details of sensors specially adapted for in-vivo measurements
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61L 29/103 Carbon
• CPC Class Codes: A61L 29/106 Inorganic materials other than carbon
• CPC Class Codes: A61L 31/084 Carbon; Graphite
• CPC Class Codes: A61L 31/088 Other specific inorganic materials not covered by A61L31/084 or A61L31/086
• CPC Class Codes: A61M 2205/0238 the material being a coating or protective layer
• CPC Class Codes: A61M 2205/0255 in acidic environments or acidic fluids
• CPC Class Codes: A61M 2205/0261 in alcalic environments or alcalic fluids
• CPC Class Codes: A61M 5/14276 specially adapted for implantation

Abstract

A medical device comprising a medical device component, the medical device component having an outer surface and an inner surface, a universal coating applied to at least the outer surface or the inner surface of the medical device component, wherein the coating is made from a material selected from the group consisting of diamond, diamond-like, borosilicate glass, carbides and nitrides. The medical device can further be a smart medical device by incorporating a sensor capable of measuring chemical and/or electrical conditions.

Claims

1. An implantable medical device comprising:

a medical device component, the medical device component having an outer surface and an inner surface, a universal coating applied to at least the outer surface or the inner surface of the medical device component, and a sensor placed between the coating and the medical device component or within the coating, the sensor capable of measuring a bioelectric event or substance to be detected, the sensor electrically connected to a microprocessor in the device, the microprocessor controlling drug delivery by the medical device.

2. The implantable medical device of claim 1 wherein the coating is made from materials selected from the group consisting of diamond, diamond-like, borosilicate glass, carbides, and nitrides.

3. The implantable medical device of claim 1 wherein the sensor is an optical sensor, the device further having a light source to emit light to a substance to be monitored by the optical device.

4. The implantable medical device of claim 1 wherein the sensor is an electrochemical sensor.

5. The implantable medical device of claim 1 wherein the sensor is a boron doped area.

6. The implantable medical device of claim 5 wherein the boron doped area is in contact with a sputtered metal piece.

7. An implantable medical device comprising:

a medical device component, the medical device component having an outer surface and an inner surface, a universal coating applied to at least the outer surface or the inner surface of the medical device component, and a sensor placed between the coating and the medical device component or within the coating, the sensor capable of measuring a bioelectric event or substance to be detected, the sensor electrically connected to a microprocessor in the device, the microprocessor controlling electrical stimulation by the medical device.

8. The medical device of claim 7 wherein the coating is made from materials selected from the group consisting of diamond, diamond-like, borosilicate glass, carbides, and nitrides.

9. The medical device of claim 7 wherein the sensor is an optical sensor, the device further having a light source to emit light to a substance to be monitored by the optical sensor.

10. The medical device of claim 7 wherein the sensor is an electrochemical sensor.

11. The implantable medical device of claim 7 wherein the sensor is a boron doped area.

12. The medical device of claim 11 wherein the boron doped area is in contact with a sputtered metal piece.