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Hemostatic puncture closure system and method of use
| Details |
Inventors: Kensey, Kenneth; Nash, John E.; Evans, Douglas;
Assignee: Kensey Nash Corporation (Exton, PA)
Primary Examiner: Pellegrino; Stephen C.
Assistant Examiner: Schmidt; Jeffrey A.
Attorney, Agent or Firm: Caesar, Rivise, Bernstein, Cohen & Pokotilow Ltd.
A system, a closure, and method of use for determining the position of a blood vessel via a percutaneous puncture and for sealing the percutaneous puncture in the blood vessel. The system includes an introducer sheath and associated positioning device, a hemostatic puncture closure, and a deployment instrument. The positioning device enables the introducer sheath to be positioned at a desired position within the vessel. The deployment instrument includes a tubular carrier storing the closure. The carrier has a distally located free end to be extended via an introducer through the puncture and its associated tract. The closure comprises a radiopaque rigid anchor, a compressed collagen plug, and a thin filament connecting the two in a pulley-like arrangement. The carrier ejects the anchor through the introducer and puncture and then draws it against the free end of the introducer. The instrument and introducer are then withdrawn together to pull the anchor against the tissue contiguous with the puncture inside the artery. Further withdrawl draws the plug out of the carrier into the puncture tract, whereupon the plug moves with respect to the anchor into engagement with the outside of artery wall to seal the puncture or incision. A tensioning device limits the force applied to the filament. The carrier also includes a tamper which is used to mechanically deform the plug within the tract. Once positioned hemostasis occurs rapidly, thereby locking the closure in place. |
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DETAILED DESCRIPTION These and other objects of this invention are achieved by providing a system for sealing a percutaneous incision or puncture in a blood vessel.
The system comprises carrier means, introducer means, and closure means.
The puncture comprises a tract extending through tissue overlying the blood vessel.
The closure means comprises anchoring means, sealing means, and filament means.
The filament means is connected between the anchoring means and the sealing means.
The introducer means comprises a tubular member having a distal free end arranged to be inserted into the puncture tract and through the puncture.
The carrier means is arranged to be inserted through the introducer means to expel the anchoring means therefrom and to draw the anchoring means into engagement with the distal free end of the introducer means.
The introducer means and the carrier means are arranged to be moved together to draw the anchoring means into engagement with the interior tissue of the blood vessel contiguous with the puncture.
The filament means is arranged to pull the anchoring means and the sealing means relative to each other to cause the sealing means to engage tissue contiguous with the puncture outside of the vessel.
In accordance with one aspect of this invention the system includes means and a method of use to enable one to readily determine the location of the wall of the vessel or lumen by the percutaneous introduction of such means into the vessel or lumen.
Such means can be used as part of the system or method to seal the puncture or incision in a vessel or lumen or may be used for other purposes, e.
g.
, it may be used for any application wherein it is desirable to determine the location of a vessel or lumen wall via a percutaneous incision or puncture.
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Heart Surgery 
