DEVICE AND METHOD FOR REMOVING OCCLUSIONS IN A BIOLOGICAL VESSEL

• US 20140309657A1
• Filed: 06/26/2014
• Published: 10/16/2014
• Est. Priority Date: 01/15/2012
• Status: Active Grant

• Current Assignee: Triticum Ltd.
• Original Assignee: Triticum Ltd.
• Inventors: BEN-AMI, Doron Jacob
• Granted Patent: US 9,987,027 B2
• Time in Patent Office: Days
• US Class Current: 606/127
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing

Abstract

A device for use within an occluded biological vessel and a method of using same to remove occlusion material from a vessel are provided. The device includes an elongated body configured for delivering projections arranged around a distal portion thereof into the biological vessel. Each of the projections includes a leaf-like structure connected to a stem portion having a higher axial rigidity than the leaf-like structure.

Claims

1. A device for use within an occluded biological vessel comprising an elongated body configured for delivering a plurality of projections arranged around a distal portion of said elongated body into the biological vessel, wherein each of said plurality of projections includes a leaf-like structure connected to a stem portion having a higher axial rigidity than said leaf-like structure.

2. The device of claim 1, wherein said projections are angled toward a proximal end of said elongated body.

3. The device of claim 1, wherein said projections are capable of folding against said device body when advanced distally through an occlusion in the biological vessel.

4. The device of claim 1, wherein said stem portion includes a protrusion for increasing said axial rigidity of said stem portion.

5. The device of claim 1, wherein said projections expand radially outward when the device is positioned within an occlusion in the biological vessel and pulled in a proximal direction.

6. The device of claim 5, wherein said stem portion of each of said projections includes a protrusion for increasing friction of said projections.

7. The device of claim 1, wherein said leaf-like portion of said projections is concave thereby enabling said leaf-lie portion to function as a scoop.

8. The device of claim 1, wherein said projections are arranged as pairs along said distal portion.

9. The device of claim 8, wherein each pair of said projection is connected to said elongated body via a swivel.

10. The device of claim 8, wherein each pair of said projections is fixed to said elongated body at an angle rotated 0-90 degrees from an adjacent pair of said projections.

11. The device of claim 10, wherein said projections can be pushed and embedded within thrombus material when folded against said elongated body.

12. The device of claim 11, wherein said projections are capable of dislodging and/or collecting said thrombus material when said projections are embedded within said thrombus and said elongated body is pulled in a proximal direction.

13. The device of claim 1, wherein said stem portion includes an element for increasing said rigidity of said stem portion.

14. The device of claim 13, wherein said element is a thickened region or a strut.

15. The device of claim 1, wherein said leaf-like structure and said stem portion are composed of silicone and further wherein said stem portion is composed of a higher Shore silicone.

16. The device of claim 1, wherein said leaf-like structure of said projections includes an inward curving distal tip.

17. The device of claim 1, further comprising two imaging markers at least one of which being attached to said elongated body via an arm extending radially outward from said elongated body.

18. The device of claim 1, further comprising a lumen extending between a distal end and a proximal portion of the device, said lumen being for enabling blood flow around an occlusion in a blood vessel when the device is positioned in said blood vessel with said distal portion within said occlusion.

19. A method of removing a thrombus from a blood vessel comprising:

(a) positioning in the blood vessel a device including a plurality of projections, each of said plurality of projections includes a leaf-like structure connected to a stem portion having a higher axial rigidity than said leaf-like structure; and

(b) advancing said plurality of projections distally into a thrombus material; and

(c) pulling said projections proximally to thereby penetrate, dislodge and collect said thrombus material.

20. The method of claim 19, wherein said blood vessel is a brain artery or a peripheral artery.