TISSUE RETRIEVAL DEVICES AND METHODS
First Claim
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1. A device for retrieving an excised tissue segment comprising:
- an elongate body having a central axis and an outer surface;
at least two prongs extending from the body in a direction substantially parallel to the central axis, wherein each prong includes a fixed-end coupled to the body, a free-end distal the body, an inner surface, and an outer surface substantially contiguous with the outer surface of the body; and
a space extending between the inner surfaces of the prongs that accommodates excised tissue.
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Abstract
A device for retrieving an excised tissue segment. In an embodiment, the device comprises an elongate body having a central axis and an outer surface. In addition, the device comprises at least two prongs extending from the body in a direction substantially parallel to the central axis. Each prong includes a fixed-end coupled to the body, a free-end distal the body, an inner surface, and an outer surface substantially contiguous with the outer surface of the body. Further, the device comprises a space extending between the inner surfaces of the prongs that accommodates excised tissue.
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Citations
24 Claims
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1. A device for retrieving an excised tissue segment comprising:
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an elongate body having a central axis and an outer surface;
at least two prongs extending from the body in a direction substantially parallel to the central axis, wherein each prong includes a fixed-end coupled to the body, a free-end distal the body, an inner surface, and an outer surface substantially contiguous with the outer surface of the body; and
a space extending between the inner surfaces of the prongs that accommodates excised tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for treating stenosis in a spine of a patient having a median plane, the spine including a spinal canal having a posterior surface, a dural sac and an epidural space between the posterior surface and dural sac, the location of the stenosis determining a region of interest in the spine, comprising:
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a) inserting a tissue excision device percutaneously into the patient, wherein the tissue excision device comprises;
a distal cutting end; and
a through bore;
b) positioning the distal cutting end of the tissue excision device adjacent the region of interest;
c) excising a tissue segment from the region of interest with the tissue excision device, wherein the excised tissue segment is disposed within the bore of the tissue excision device;
d) inserting a tissue retrieval device percutaneously into the bore of the tissue excision device, the tissue retrieval device comprises;
an elongate body having a central axis and an outer surface; and
at least two prongs extending from the body in a direction substantially parallel to the central axis, wherein each prong includes a fixed-end coupled to the body, a free-end distal the body;
e) advancing the prongs towards the excised tissue segment within the bore of the tissue excision device;
f) grasping the excised tissue segment between the prongs of the tissue retrieval device; and
g) removing the excised tissue segment from the bore of the tissue excision device. - View Dependent Claims (19, 20, 21, 22)
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23. A kit for performing a procedure on a spine, the spine including an epidural space containing a dural sac, the kit comprising:
a volume of a contrast medium adapted to be inserted into the epidural space by the insertion member and expanded so as to compress a portion of the thecal sac and provide a safety zone within the epidural space;
a tissue excision device; and
a tissue retrieval device. - View Dependent Claims (24)
Specification