A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/03 (2006.01) A61B 17/00 (2006.01) F16G 11/04 (2006.01) F16G 11/10 (2006.01) A61B 17/04 (2006.01) A61B 17/12 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2122994
A system and closure (22) for determining the position of a blood vessel (26) via a percutaneous puncture (24) and for sealing the percutaneous puncture in the blood vessel. The system includes an introduces sheath (28, 28') and associated positioning de- vice.(200, 300, 400, 600), a hemostatic puncture closure (22), and a deployment instru- ment (20). The positioning device (200, 300, 400, 600) enables the introduces sheath (28) to be positioned at a desired position within the vessel (26). The deployment instrument (20) includes a tubular carrier (100) storing the closure (22). The carrier (100) has a dis- tally located free end (104) to be extended via an introducer (28, 28') through the punc- lure (24) and its associated tract (24A). The closure (22) comprises a radiopaque rigid anchor (32, 32'), a compressed collagen plug (30), and a thin filament (34) connecting the two in a pulley-like arrangement. The carrier (100) ejects the anchor (32, 32') through the introducer (28, 28') and puncture (24) and then draws it against the free end of the introducer. The instrument (20) and introducer (28, 28') are then withdrawn to- gether to pull the anchor against the tissue contiguous with the puncture inside the ar- tery. Further withdrawal draws the plug (30) out of the carrier (100) into the puncture tract (24A), whereupon the plug (30) moves with respect to the anchor (32, 32') into en- gagement with the outside of artery wall to seal the puncture or incision (24). A tension- ing device (116, 118, 120, 122) limits the force applied to the filament (34). The carrier (100) also includes a tamper (130) which is used to mechanically deform the plug (30) within the tract (24A). Once positioned hemostasis occurs rapidly, thereby locking the closure (22) in place.
Evans Douglas
Kensey Kenneth
Nash John
Kensey Nash Corporation
Ridout & Maybee Llp
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