Micro-fabricated catheter devices having varying diameters

• US 9,616,195 B2
• Filed: 04/02/2010
• Issued: 04/11/2017
• 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.
• Primary Examiner(s): Mehta, Bhisma
• Assistant Examiner(s): LEE, BRANDY SCOTT
• Application Number:
  US12/753,855
• Publication Number:
  US 20100256601A1
• Time in Patent Office: 2,566 Days
• Field of Search: 604523, 604510, 604 9505, 604530, 604 9601, 60416401, 604264, 604524, 604525, 604528, 604533, 604534, 604535
• 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 25/0013 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 25/0051 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 catheter device comprising an elongated outer member having an outer surface and an interior surface forming a lumen extending from a proximal end to a distal end, wherein an outer diameter of said distal end is larger than an outer diameter of said proximal end, and embodiments thereof.

Claims

1. A catheter device comprising:

an elongated outer member including;

a proximal stainless steel hypotube having an outer surface, an interior surface, a proximal end, and a distal end, the interior surface forming a proximal lumen extending from the proximal end to the distal end, the outer surface having a constant outer proximal diameter from the proximal end to the distal end; and

a distal polymer tube having an outer surface, an interior surface, a proximal end, and a distal end, the proximal end of the distal polymer tube connected to the distal end of the stainless steel hypotube, the interior surface of the distal polymer tube forming a distal lumen extending from the proximal end of the distal polymer tube to the distal end of the distal polymer tube, the outer surface of the distal polymer tube having a constant outer profile prior to, during, and after deployment into a patient, wherein an outer distal diameter of said distal end of the distal polymer tube is larger than the outer proximal diameter of said proximal end of the proximal stainless steel hypotube, the distal polymer tube having a length greater than 35 centimeters.

2. The catheter device of claim 1, wherein said elongated outer member is micro-fabricated.

3. The catheter device of claim 1, wherein said elongated outer member is micro-fabricated at the distal end of the distal polymer tube.

4. The catheter device of claim 1, further comprising a torqueable hub connected to said proximal end of the proximal stainless steel hypotube and having a barrel-shaped body with a plurality of longitudinal grooves formed therein, and further forming an axial interior space within which a syringe can be inserted.

5. The catheter device of claim 1, wherein said outer diameter of said proximal end of the proximal stainless steel hypotube is 0.030 inches.

6. The catheter device of claim 1, wherein said outer diameter of said distal end of the distal polymer tube is 0.039 inches.

7. The catheter device of claim 1, wherein said outer diameter of said proximal end of the proximal stainless steel hypotube is 0.030 inches, and said outer diameter of said distal end of the distal polymer tube is 0.039 inches.

8. The catheter device of claim 1, wherein said distal lumen has an inner diameter of 0.024 inches.

9. The catheter device of claim 1, further comprising an inner member formed of a hypotube wherein said hypotube disposed within a portion of said proximal lumen forms a lumen gap, wherein the interior surface of said elongated outer member defines an outer diameter of said lumen gap and an outer diameter of said hypotube defines an inner diameter of said lumen gap.

10. The catheter device of claim 9, wherein said lumen gap is 0.017 inches.

11. A catheter device comprising:

an elongated outer member including;

a proximal stainless steel hypotube having an outer surface, an interior surface, a proximal end, and a distal end, the interior surface forming a proximal lumen extending from the proximal end to the distal end, the proximal stainless steel hypotube forming a proximal portion of the elongated outer member, the proximal portion having a constant outer diameter along its length; and

a distal polymer tube having an outer surface, an interior surface, a proximal end, and a distal end, a proximal end of the distal polymer tube connected to the distal end of the stainless steel hypotube, the interior surface of the distal polymer tube forming a distal lumen extending from the proximal end of the distal polymer tube to the distal end of the distal polymer tube, the distal polymer tube forming a distal portion of the elongated outer member, the distal portion having a constant outer diameter along its length and a constant inner diameter along its length, the distal polymer tube having a length greater than 35 centimeters;

wherein an outer diameter of the proximal end of the distal portion is larger than the outer diameter of the distal end of the proximal portion.

12. The catheter device of claim 11, wherein the outer diameter of the distal end of the distal polymer tube is 0.030 inches.

13. The catheter device of claim 11, wherein the outer diameter of the distal end of the distal polymer tube is 0.039 inches.

14. The catheter device of claim 11, wherein the outer diameter of the proximal end of the proximal stainless steel hypotube is 0.030 inches, and the outer diameter of the distal end of the distal polymer tube is 0.039 inches.

15. The catheter device of claim 11, wherein the distal portion has an inner diameter of 0.024 inches.

16. The catheter device of claim 11, wherein a distal end of the distal portion tapers to its distalmost end.