Micro-fabricated Guidewire Devices Formed Having Elastomeric Fill Compositions

• US 20100256606A1
• Filed: 04/02/2010
• Published: 10/07/2010
• Est. Priority Date: 04/03/2009
• Status: Active Grant

• Current Assignee: Scientia Vascular, LLC
• Original Assignee: Scientia Vascular, LLC
• Inventors: Lippert, John, Snyder, Edward J.
• Granted Patent: US 9,067,333 B2
• Time in Patent Office: Days
• US Class Current: 604/529
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 2025/09108 Methods for making a guide wire
• CPC Class Codes: A61M 2025/09133 having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0013 Weakening parts of a catheter tubing, e.g. by making cuts in the tube or reducing thickness of a layer at one point to adjust the flexibility
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/0051 made from fenestrated or weakened tubing layer
• CPC Class Codes: A61M 25/0053 having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: B26D 5/20 with interrelated action between the cutting member and work feed
• CPC Class Codes: B26F 1/0053 by machining, e.g. cutting, grinding, projections on the tube wall
• CPC Class Codes: B26F 1/0061 whereby the tube moves axially or radially B26F1/0038, B26F1/0046, B26F1/0053 take precedence

Abstract

A guidewire device comprising a micro-fabricated elongated outer member having an outer surface and an interior surface forming a lumen extending from a proximal end to a distal end and a plurality of fenestrations made through said outer surface and said interior surface into a least a portion of said lumen; an outer elastomer laminate layer in contact with at least a portion of said outer surface and filling at least a portion of said plurality of fenestrations; and an inner member disposed within a substantial portion of said lumen, and embodiments thereof.

Claims

1. A guidewire device comprising:

a micro-fabricated elongated outer member having an outer surface and an interior surface forming a lumen extending from a proximal end to a distal end and a plurality of fenestrations made through said outer surface and said interior surface into a least a portion of said lumen;

an outer elastomer laminate layer in contact with at least a portion of said outer surface and filling at least a portion of said plurality of fenestrations; and

an inner member disposed within a substantial portion of said lumen.

2. The guidewire device of claim 1 wherein said inner member is a monofilament wire core.

3. The guidewire device of claim 1 wherein said inner member is a hypotube.

4. The guidewire device of claim 1 wherein said micro-fabricated elongated outer member has a plurality of resultant beams, each resultant beam formed between adjacent fenestrations among said plurality of fenestrations.

5. The guidewire device of claim 4, wherein said outer elastomer laminate layer substantially covers all of said resultant beams.

6. The guidewire device of claim 4, wherein said outer elastomer laminate layer covers completely all of said resultant beams.

7. The guidewire device of claim 1 wherein said micro-fabricated elongated outer member forms an interspersed skeleton and wherein said outer elastomer laminate layer forms a matrix of flexible material that is disposed around said interspersed skeleton.

8. The guidewire device of claim 1, wherein said micro-fabricated elongated outer member is formed from polyetheretherketone.

9. The guidewire device of claim 1, wherein said outer elastomer laminate layer is formed from polyether block amide.

10. The guidewire device of claim 1, further comprising a lubricious liner formed from PTFE in contact with the interior surface.

11. The guidewire device of claim 1, wherein said micro-fabricated elongated outer member is formed from a material having a modulus value of about 3700 MPa.

12. The guidewire device of claim 11, wherein said outer elastomer laminate layer is formed from a material having a modulus value of about 12 MPa.

13. The guidewire device of claim 1, wherein said outer elastomer laminate layer extends beyond said distal end to form a hollow distal tip.

14. The guidewire device of claim 13, wherein said hollow distal tip includes a wire holding a shape for the hollow distal tip.

15. The guidewire device of claim 13, wherein said hollow distal tip includes a radiopaque marker.