METHODS AND DEVICES FOR CROSSING CHRONIC TOTAL OCCLUSIONS

• US 20140128900A1
• Filed: 01/16/2014
• Published: 05/08/2014
• Est. Priority Date: 10/22/2007
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: BridgePoint Medical, Inc. (Boston Scientific Corporation)
• Inventors: Jacobs, Peter Alan, Kugler, Chad John, Olson, Matthew Jonathan, Olson, Ross Arlen, Robinson, David B.
• Granted Patent: US 10,448,940 B2
• Time in Patent Office: Days
• US Class Current: 606/190
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/00469 for insertion of instruments, e.g. guide wire, optical fibre
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• CPC Class Codes: A61M 2025/0197 for creating an artificial passage within the body, e.g. in order to go around occlusions
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 Tip not integral with tube

Abstract

The present disclosure is directed to a method of facilitating treatment via a vascular wall defining a vascular lumen containing an occlusion therein. The method may include providing an intravascular device having a distal portion and a longitudinal axis and inserting the intravascular device into the vascular lumen. The method may further include positioning the distal portion in the vascular wall, rotating the intravascular device about the longitudinal axis, and advancing the intravascular device within the vascular wall.

Claims

1. A device for facilitating treatment via a vascular wall defining a vascular lumen containing an occlusion therein, the device comprising:

a handle assembly;

an intravascular device coupled to the handle assembly, the intravascular device including a shaft extending distally from the handle assembly, the shaft of the intravascular device including;

a coil wound in a helical shape, the coil extending from a distal end of the shaft to a proximal end of the shaft;

a sleeve having a proximal end and a distal end, the sleeve extending from the distal end of the shaft and covering a portion of the coil;

a tubular body comprising hypodermic tubing, wherein the sleeve and the coil both extend into a lumen defined by the tubular body, wherein a distal portion of the tubular body includes a cut formed therein to provide a transition in lateral stiffness proximate a distal end of the tubular body;

a tip fixed to the distal end of the shaft; and

a hub fixed to the proximal end of the shaft.

2. The device of claim 1, wherein the handle assembly is disposed about the tubular body, the sleeve, and the coil.

3. The device of claim 2, wherein the tubular body extends proximal of the handle assembly.

4. The device of claim 3, where the hub is fixed to a proximal portion of the tubular body.

5. The device of claim 4, wherein the hub is fixed to a proximal portion of the coil.

6. The device of claim 2, wherein the handle assembly is slidably positioned about the intravascular device.

7. The device of claim 1, further including a sheath having a proximal end and a distal end, and covering a portion of the tubular body, a portion of the coil, and a portion of the sleeve.

8. The device of claim 7, wherein the distal end of the sheath is located proximal of the distal end of the sleeve.

9. The device of claim 7, wherein the distal end of the sheath is located between the distal end of the tubular body and the distal end of the sleeve.

10. The device of claim 1, wherein the tip is directly fixed to the coil, and the hub is directly fixed to the coil.

11. The device of claim 1, wherein the tip has a generally rounded shape.

12. The device of claim 1, wherein the coil includes a plurality of filars.

13. The device of claim 12, wherein the plurality of filars is eight, nine, or ten filars.

14. The device of claim 1, wherein the tip is a metallic material.

15. The device of claim 1, wherein a surface of the tip is non-abrasive.

16. The device of claim 14, wherein a surface roughness of the surface of the tip is less than about 25 micrometers.

17. The device of claim 1, wherein the cut formed in the distal portion of the tubular body is a helical cut.

18. A device for facilitating treatment via a vascular wall defining a vascular lumen containing an occlusion therein, the device comprising:

a handle assembly;

an intravascular device coupled to the handle assembly, the intravascular device including a shaft extending distally from the handle assembly, the shaft of the intravascular device including;

a coil wound in a helical shape, the coil extending from a distal end of the shaft to a proximal end of the shaft;

a sleeve having a proximal end and a distal end, the sleeve extending from the distal end of the shaft and covering a portion of the coil;

a tubular body comprising hypodermic tubing, wherein the sleeve and the coil both extend into a lumen defined by the tubular body, wherein a proximal portion of the tubular body extends proximal of the handle assembly and a distal portion of the tubular body includes a helical cut formed therein to provide a transition in lateral stiffness proximate a distal end of the tubular body;

a tip fixed to the distal end of the shaft; and

a hub fixed to the proximal end of the shaft proximal of the handle assembly.

19. The device of claim 18, where the hub is fixed to a proximal portion of the tubular body.

20. The device of claim 18, wherein the tip is fixed to a distal end of the coil.