Complex wire formed devices

• US 9,271,748 B2
• Filed: 08/14/2013
• Issued: 03/01/2016
• Est. Priority Date: 04/17/2007
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Lazarus Effect, Inc. (Medtronic Plc)
• Inventors: Martin, Brian B.
• Primary Examiner(s): SEVERSON, RYAN J
• Application Number:
  US13/967,203
• Publication Number:
  US 20140148841A1
• Time in Patent Office: 930 Days
• Field of Search: 606/110, 606/113, 606/114, 606/127, 606/128, 606/200
• US Class Current: 1/1
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting

Abstract

The devices and methods described herein relate to jointless construction of complex structures. Such devices have applicability in through-out the body, including clearing of blockages within body lumens, such as the vasculature, by addressing the frictional resistance on the obstruction prior to attempting to translate and/or mobilize the obstruction within the body lumen.

Claims

1. A medical device for delivery through a catheter, the medical device comprising device comprising:

a first main bundle comprised of a plurality of wires;

a first shape formed by a divergence of the plurality of wires into a plurality of individual first subsets of wires, and where each first subset of wires diverges to form a network of wires,

where the network of wires converges to form a plurality of individual second subset of wires, and where each second subset of wires converges to form a second main bundle;

where a region of the device from the first shape to the second shape forms a self expanding basket structure having no joints that is configured to assume the expanded profile independently of the first shaped section; and

where the first and second shape each form a three dimensional structure.

2. The apparatus of claim 1, where the network of wires comprise individual single wires.

3. The apparatus of claim 1, where the first shape comprises a shape selected from the group consisting of a circle, an arcuate shape, a partial circular shape, a loop, an oval, a square, a rectangle, a polygon, an overlapping loop, a pair of semi-circles, a flower shape, and a Figure 8.

4. The apparatus of claim 1, where the second shape comprises a shape selected from the group consisting of a circle, an arcuate shape, a partial circular shape, a loop, an oval, a square, a rectangle, a polygon, an overlapping loop, a pair of semi-circles, a flower shape, and a Figure 8.

5. The medical device of claim 1, where the first shape is rotatable relative to the second shape, such that upon rotation the network of individual wires forms a mesh or helical pattern.

6. The apparatus of claim 1, where each transition between each shape is jointless.

7. The apparatus of claim 1, where each individual single wire comprises a plurality of filaments.

8. The apparatus of claim 1, where the first main bundle and the second main bundle converge.

9. The apparatus of claim 1, where main bundle of wires includes at least a first wire and a second wire where the first and second wire each has different characteristics.

10. The apparatus of claim 9, where the characteristics are selected from a group consisting of material, cross-sectional shape, and cross-sectional size.

11. The apparatus of claim 9, where the characteristics are selected from a group consisting of brittleness, ductility, elasticity, hardness, malleability, plasticity, strength, and toughness.