Vena cava filter removal device
A vascular filter retrieval device and methods of using the same are disclosed. In particular, some embodiments disclose a vascular filter retrieval device having a strut engaging member coupled to a loop. A retrieval device with an elongate member coupling a strut engaging member and loop are also disclosed. The present disclosure also provides a device having an orienting member arranged to extend at least partially around a vascular filter and orient a strut engaging member with a portion of the vascular filter. Other embodiments are disclosed.
1. A device for retrieving a vascular filter having a plurality of struts from a body of a patient, comprising:
a catheter defining a lumen;
a loop deployable from and retractable into said lumen; and
a strut engaging member fixedly coupled to said loop and defining first and second strut receiving recesses each arranged to receive at least one strut of the vascular filter;
wherein said loop has a forward portion and a rearward portion and defines a loop opening when the loop is deployed from said lumen;
wherein said forward portion exits the lumen before the rearward portion when the loop is deployed from the lumen;
wherein said strut engaging member is fixedly coupled to said forward portion of said loop;
wherein a first segment of said loop extends laterally of a first side of said strut engaging member and a second segment of said loop extends laterally of a second side of said strut engaging member;
wherein when said loop is deployed from said lumen to an expanded configuration, said rearward portion defines a first plane and said forward portion of said loop curves out of said first plane; and
wherein said first and second strut receiving recesses open away from said loop opening.
2. The device of claim 1 , wherein:
said loop is arranged to position said strut engaging member between struts of the vascular filter.
3. The device of claim 1 , wherein:
said loop is arranged to surround the vascular filter.
4. The device of claim 1 , wherein:
said first and second strut receiving recesses are arranged to wedge a portion of said strut engaging member between struts of the vascular filter.
5. The device of claim 1 , wherein:
said strut receiving recesses are defined by a plurality of elongate outward protrusions on said strut engaging member.
6. The device of claim 1 , further comprising:
an elongate member coupling said strut engaging member to said loop.
7. The device of claim 6 , wherein:
said elongate member is wrappable around at least one strut of the vascular filter.
8. The device of claim 1 , wherein:
an intermediate portion of said loop extends between said forward portion and said rearward portion; and
wherein when said loop is deployed from said lumen to an expanded configuration said forward portion is positioned rearward of said intermediate portion.
9. A device for retrieving a vascular filter having a plurality of struts from a body of a patient, comprising:
a catheter defining a lumen;
a loop deployable from and retractable into said lumen; and
an elongate member coupling a strut engaging member to said loop;
wherein said loop has a forward portion and a rearward portion;
wherein said forward portion exits the lumen before the rearward portion when the loop is deployed from the lumen;
wherein said strut engaging member is fixedly coupled to said forward portion of said loop;
wherein a first segment of said loop extends laterally of a first side of said strut engaging member and a second segment of said loop extends laterally of a second side of said strut engaging member; and
wherein when said loop is deployed from said lumen to an expanded configuration said rearward portion defines a first plane and said forward portion of said loop curves out of said first plane and through an angle of about 180 degrees.
10. The device of claim 9 , wherein:
said loop is arranged to position said strut engaging member between struts of the vascular filter.
11. The device of claim 9 , wherein:
said elongate member is wrappable around a strut of the vascular filter.
12. The device of claim 11 , wherein:
said strut engaging member is arranged to hook said elongate member.
13. A device for retrieving a vascular filter having a plurality of struts from a body of a patient, comprising:
a loop having a strut engaging member fixedly coupled thereto;
said loop arranged to contact the vascular filter along at least a plurality of discrete points and orient said strut engaging member for engagement with the struts of the vascular filter; and
said strut engaging member arranged to engage struts of the vascular filter and couple at least a portion of the loop to the vascular filter;
wherein said loop has a forward portion and a rearward portion and said strut engaging member is fixedly coupled to said forward portion;
wherein a first segment of said loop extends rearwardly and laterally of a first side of said strut engaging member and a second segment of said loop extends rearwardly and laterally of a second side of said strut engaging member;
wherein said rearward portion of said loop defines a first plane and said forward portion of said loop curves out of said first plane and back toward said rearward portion so as to define a hook; and
wherein said loop comprises a self-opening loop.
14. The device of claim 13 , wherein:
said strut engaging member defines a strut receiving recess arranged to receive at least one strut of the vascular filter.
15. The device of claim 13 , wherein:
said strut engaging member defines first and second strut receiving recesses each arranged to receive at least one strut of the vascular filter.
16. The device of claim 15 , wherein:
said first and second strut receiving recesses are arranged to wedge at least a portion of said strut engaging member between struts of the vascular filter.
17. The device of claim 15 , wherein:
said strut receiving recesses are defined by a plurality of elongate outward protrusions on said strut engaging member.
18. The device of claim 13 , wherein:
said loop is arranged to surround the vascular filter.
19. The device of claim 13 , further comprising:
an elongate member coupling said strut engaging member to said loop.
20. The device of claim 19 , wherein:
said elongate member is wrappable around at least one strut of the vascular filter.