Wire and device for vascular treatment

• US 10,463,388 B2
• Filed: 11/20/2015
• Issued: 11/05/2019
• Est. Priority Date: 09/13/2006
• Status: Active Grant

• Current Assignee: Merit Medical Systems, Inc.
• Original Assignee: Merit Medical Systems, Inc.
• Inventors: Tal, Michael G.
• Primary Examiner(s): Holwerda, Kathleen S
• Application Number:
  US14/947,256
• Publication Number:
  US 20160338728A1
• Time in Patent Office: 1,446 Days
• Field of Search: 606169, 606180
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving

Abstract

A wire for use with a vascular treatment device may have a proximal end, a distal end, and a main shaft extending therebetween. The distal end may have a distal free end and a first segment. The first segment may extend from the main shaft and may be biased to a first included angle that is defined between the main shaft and the first segment and less than 180 degrees.

Claims

1. A wire for use with a vascular treatment device, the wire comprising:

a shaft having a proximal end and a distal end, the shaft further comprising;

a first segment that extends from the proximal end to a bend, the first segment having a first diameter; and

a second segment that extends from the bend to the distal end, the second segment including a first portion, a second portion, and a third portion, the first portion disposed between the bend and the second portion, the second portion disposed distal to the first portion, the second portion comprising a second diameter disposed at its distal end that is greater than the first diameter, the second diameter being a maximum diameter of the second portion, the third portion disposed distal to the second portion and defining a distal tip, the third portion having a third diameter that is greater than the second diameter, the first segment and the second segment being biased relative to each other at a first interior angle that is less than 180 degrees, the first portion and the second portion being biased relative to each other at a second interior angle that is less than 180 degrees, wherein the second interior angle is greater than the first interior angle, the second and third portions being axially offset from the proximal end, and at least a portion of the wire being configured to rotate within the vascular treatment device.

2. The wire of claim 1, wherein the distal end comprises a rounded distal tip.

3. The wire of claim 2, wherein the third portion comprises a textured surface.

4. The wire of claim 2, wherein the third portion comprises a hemispherical-shaped distal tip.

5. The wire of claim 4, further comprising a sleeve extending from the hemispherical-shaped distal tip towards the proximal end along the second portion of the wire, the sleeve adding strength to the hemispherical-shaped distal tip thereby increasing contact surface area to prevent detachment of the hemispheric-shaped distal tip.

6. The wire of claim 1, wherein the first interior angle is less than 140 degrees.

7. The wire of claim 1, wherein at least part of the second segment is weighted.

8. The wire of claim 7, wherein at least part of the second segment is eccentrically weighted relative to the first segment.

9. The wire of claim 1, wherein at least part of the second segment has a roughened surface.

10. The wire of claim 1, wherein the wire further comprises a spring disposed along the entirety of the second portion.

11. The wire of claim 1, wherein the first segment extends along a first axis and a length measured along a second axis that is perpendicular to first axis between the first segment and the distal end of the shaft is less than 0.3 inches.

12. A vascular treatment device comprising the wire of claim 1 and a sheath, the sheath defining a lumen within which at least a portion of the wire is disposed, the second diameter being less than an inner diameter of the sheath.