Surface fluorinated stent and methods thereof

• US 6,090,134 A
• Filed: 02/16/1999
• Issued: 07/18/2000
• Est. Priority Date: 02/16/1999
• Status: Expired due to Fees

• Current Assignee: Polymeyex Medical Corp
• Original Assignee: Polymerex Medical Corp.
• Inventors: Tu, Hosheng, Tu, Lily Chen
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Bui, Vy Q.
• Application Number:
  US09/250,316
• Time in Patent Office: 518 Days
• Field of Search: 606/191, 606/194, 606/108, 606/198, 606/158, 623/1.11, 623/1.19, 623/1.21, 623/1.42, 623/1.49, 623/11, 623/12
• US Class Current: 623/1.15
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00875 Resistance or impedance
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61L 31/088 Other specific inorganic materials not covered by A61L31/084 or A61L31/086
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61L 33/027 Other specific inorganic materials not covered by A61L33/022 or A61L33/025
• CPC Class Codes: A61L 33/064 obtained by reactions only involving carbon-to-carbon unsaturated bonds A61L33/062 takes precedence
• CPC Class Codes: C08L 27/12 containing fluorine atoms
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene

Abstract

An intraluminal medical device for treating tissues in a patient, the device comprising an elongate radially expandable tubular stent having an interior luminal surface and an opposite exterior surface extending along a longitudinal stent axis; the interior luminal surface, the exterior surface, and/or an entire surface of the expandable tubular stent having fluorine-containing coating to render the surface biocompatible and/or hemocompatible.

Claims

1. An intraluminal medical device comprising:

an elongate radially expandable tubular stent having an interior luminal surface and an opposite exterior surface extending along a longitudinal stent axis;

the exterior surface of the expandable tubular stent having fluorine-containing coating.

2. The intraluminal medical device of claim 1, wherein the interior luminal surface of the elongate radially expandable tubular stent has fluorine-containing coating.

3. The intraluminal medical device of claim 1, wherein an entire surface of the elongate radially expandable tubular stent has fluorine-containing coating.

4. The intraluminal medical device as in claim 1 further comprising temperature sensing means positioned at close proximity of the exterior surface of the intraluminal medical device for measuring temperature, wherein said temperature sensing means comprises a thermocouple or a thermister measuring probe.

5. The intraluminal medical device as in claim 4 further comprising temperature control means for receiving temperature readings, wherein the temperature readings sensed from the temperature sensing means is relayed to the temperature control means and is adapted to effect the RF current delivery to the intraluminal medical device.

6. The intraluminal medical device as in claim 1, wherein the RF current is within the range of 50 to 2,000 kHz.

7. The intraluminal medical device of claim 1, wherein the fluorine-containing coating is selected from a group consisting of glow discharge coating, adhesive coating, impregnating coating, compound coating, dip coating, paste coating, and sintering.

8. The intraluminal medical device of claim 1, wherein the elongate radially expandable tubular stent is selected from a group consisting of a grafted stent, a coil stent, a mesh stent, a scaffold stent, a sleeve stent, a porous stent, or a permeable stent.

9. A method for treating an intraluminal tissue of a patient, the method comprising the steps of:

(a) positioning an intraluminal medical device at an appropriate intraluminal tissue site, the intraluminal medical device comprising an elongate radially expandable tubular stent having an interior luminal surface and an opposite exterior surface extending along a longitudinal stent axis, wherein the exterior surface of the expandable tubular stent has fluorine-containing coating; and

(b) deploying the radially expandable tubular stent.

10. The method for treating an intraluminal tissue of a patient as in claim 9, the intraluminal medical device further comprising an entire surface of the expandable tubular stent having fluorine-containing coating.

11. The method for treating an intraluminal tissue of a patient as in claim 9, the method further comprising measuring temperature, wherein the intraluminal medical device further comprises temperature sensing means positioned at close proximity of the exterior surface of the intraluminal medical device, and wherein said temperature sensing means comprises a thermocouple or a thermister measuring probe.

12. The method for treating an intraluminal tissue of a patient as in claim 11, the method further comprising relaying measured temperature from the temperature sensing means to a temperature control means, wherein the temperature sensed is adapted to effect the RF current delivery to the intraluminal medical device.

13. The method for treating an intraluminal tissue of a patient as in claim 9 further comprising collapsing the radially expandable tubular stent and retracting the collapsed stent from a body of a patient.

14. The method for treating an intraluminal tissue of a patient as in claim 9, wherein the elongate radially expandable tubular stent is selected from group consisting of a grafted stent, a coil stent, a mesh stent, a scaffold stent, a sleeve stent, a porous stent, and a permeable stent.