Vascular treatment systems

• US 8,715,315 B1
• Filed: 07/29/2013
• Issued: 05/06/2014
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Insera Therapeutics, Inc.
• Original Assignee: Insera Therapeutics, Inc.
• Inventors: Janardhan, Vallabh, Janardhan, Vikram
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US13/953,681
• Time in Patent Office: 281 Days
• Field of Search: 600/139, 600/140, 600/141, 600/142, 600/146, 600/587, 604/523, 604/524, 604/525, 606/159, 606/191, 606/198, 606/200
• US Class Current: 606/200
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/00955 thermoplastic
• CPC Class Codes: A61B 2017/12077 Joint changing shape upon application of heat, e.g. bi-metal or reversible thermal memory
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 25/0015 Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: D04C 1/06 Braid or lace serving particular purposes
• CPC Class Codes: D04C 3/48 : Auxiliary devices
• CPC Class Codes: D10B 2509/06 : Vascular grafts; stents
• CPC Class Codes: Y10T 156/1062 : Prior to assembly
• CPC Class Codes: Y10T 83/0596 : Cutting wall of hollow work

Abstract

Vascular treatment and methods include a plurality of self-expanding bulbs and a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Joints between woven structures and hypotubes include solder. Woven structures include patterns of radiopaque filaments measurable under x-ray. Structures are heat treated to include at least shapes at different temperatures. A catheter includes a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Heat treating systems include a detachable flange. Laser cutting systems include a fluid flow system.

Claims

1. A device for treating a thrombus in a vessel, the device comprising:

a completely hollow distal portion including a plurality of wires woven to form a textile structure, the plurality of wires including radiopaque wires and shape-memory wires, the distal portion including;

at least ten self-expanding bulbs,

at least nine necks longitudinally between the ten self-expanding bulbs and radially inward of the ten self-expanding bulbs, and

a distal neck distal to the distal-most of the at least ten self-expanding bulbs; and

a proximal portion coupled to a proximal end of the distal portion, the proximal portion including a hypotube having a longitudinal axis, the proximal portion comprising;

a first pattern of longitudinally-spaced rows each including two kerfs and two stems, the rows of the first pattern at an angle with respect to the longitudinal axis of the hypotube, the two kerfs in each of the rows of the first pattern having rounded edges, the two stems in each of the rows of the first pattern circumferentially opposite, the stems of the first pattern offset in a first circumferential direction, a pitch of the longitudinally-spaced rows of the first pattern varying longitudinally along the hypotube, and

a second pattern of longitudinally-spaced rows each including two kerfs and two stems, the rows of the second pattern at an angle with respect to the longitudinal axis of the hypotube, the two kerfs in each of the rows of the second pattern having rounded edges, the two stems in each of the rows of the second pattern circumferentially opposite, the rows of the second pattern singly alternatingly interspersed with the rows of the first pattern, the stems of the second pattern offset in a second circumferential direction opposite the first circumferential direction, a pitch of the longitudinally-spaced kerfs of the second pattern varying longitudinally along the hypotube.

2. The device of claim 1, wherein the at least ten self-expanding bulbs comprises:

a first bulb;

a second bulb distal to the first bulb, the first bulb and the second bulb having a first diameter;

a third bulb distal to the second bulb;

a fourth bulb distal to the third bulb, the third bulb and the fourth bulb having a second diameter smaller than the first diameter;

a fifth bulb distal to the fourth bulb;

a sixth bulb distal to the fifth bulb;

a seventh bulb distal to the sixth bulb, the fifth bulb, the sixth bulb, and the seventh bulb having a third diameter smaller than the second diameter;

an eighth bulb distal to the seventh bulb;

a ninth bulb distal to the eighth bulb; and

a tenth bulb distal to the ninth bulb, the eighth bulb, the ninth bulb, and the tenth bulb having a fourth diameter smaller than the third diameter.

3. The device of claim 1, wherein the ten self-expanding bulbs comprises:

a first bulb, the first bulb having a generally oblong shape;

a second bulb distal to the first bulb, the second bulb having a generally spherical shape;

a third bulb distal to the second bulb, the third bulb having a generally oblong shape;

a fourth bulb distal to the third bulb, the fourth bulb having a generally spherical shape;

a fifth bulb distal to the fourth bulb, the fifth bulb having a generally oblong shape;

a sixth bulb distal to the fifth bulb, the sixth bulb having a generally spherical shape;

a seventh bulb distal to the sixth bulb, the seventh bulb having a generally spherical shape;

an eighth bulb distal to the seventh bulb, the eighth bulb having a generally oblong shape;

a ninth bulb distal to the eighth bulb, the ninth bulb having a generally spherical shape; and

a tenth bulb distal to the ninth bulb, the tenth bulb having a generally spherical shape.

4. The device of claim 3, wherein

the first bulb and the second bulb have a first diameter;

the third bulb and the fourth bulb have a second diameter smaller than the first diameter;

the fifth bulb, the sixth bulb, and the seventh bulb have a third diameter smaller than the second diameter; and

the eighth bulb, the ninth bulb, and the tenth bulb have a fourth diameter smaller than the third diameter.

5. A device for treating a thrombus in a vessel, the device comprising:

a completely hollow first portion including a plurality of wires woven to form a textile structure, the plurality of wires including radiopaque wires and shape-memory wires, the textile structure including a plurality of bulbs and a plurality of necks in a radially expanded state the plurality of bulbs spaced by the plurality of necks; and

a second portion bonded to the first portion, the second portion including a hypotube having a longitudinal axis, the hypotube including at least two interspersed patterns of longitudinally-spaced rows of kerfs, a pitch of the longitudinally-spaced rows of kerfs varying along the longitudinal axis of the hypotube.

6. The device of claim 5, wherein the plurality of bulbs includes ten bulbs.

7. The device of claim 5, wherein at least two of the plurality of bulbs have different outer diameters in the radially expanded state.

8. The device of claim 5, wherein at least two of the plurality of bulbs have different shapes in the radially expanded state.

9. The device of claim 5, wherein at least one of the plurality of bulbs has a spherical shape in the radially expanded state.

10. The device of claim 5, wherein at least one of the plurality of bulbs has an oblong shape in the radially expanded state.

11. The device of claim 5, wherein the radiopaque wires are spaced or clustered to increase visibility under x-ray.

12. The device of claim 5, wherein each of the rows is angled with respect to the longitudinal axis of the hypotube.

13. The device of claim 5, wherein each of the rows includes two kerfs and two stems.

14. The device of claim 13, wherein the stems in each of the rows are circumferentially opposite.

15. The device of claim 13, wherein the at least two interspersed patterns includes a first pattern including the stems circumferentially offset in a first direction and a second pattern including the stems circumferentially offset in a second direction opposite the first direction.

16. A device for treating a thrombus in a vessel, the device comprising:

a completely hollow first portion including a plurality of wires woven to form a textile structure including a plurality of bulbs and a plurality of necks in a radially expanded state, the plurality of bulbs spaced by the plurality of necks;

a second portion including a hypotube including at least two interspersed patterns of longitudinally-spaced rows of kerfs; and

a joint coupling the first portion and the second portion.

17. The device of claim 16, wherein the joint includes lead-free solder.

18. The device of claim 16, wherein the joint includes a proximal end of the first portion within a distal end of the second portion.