Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2006-05-16
2006-05-16
Nasser, Robert L. (Department: 3736)
Surgery
Diagnostic testing
Cardiovascular
C600S481000, C606S231000, C606S214000
Reexamination Certificate
active
07044916
ABSTRACT:
Methods and systems related to sealing punctures in blood vessels (such as following an angio or PTCA procedure) are disclosed. The position of a distal end of an introducer assembly in tissue is determined using a pressure sensor. The pressure sensor is connected to the proximal end of the introducer assembly. The introducer assembly has a fluid path between its distal end and its proximal end. Measured blood pressure is outputted as an indication of the position of the distal end of the introducer assembly in the tissue. Proper positioning of a seal is confirmed by placing the introducer assembly such that its distal end is in tissue outside a puncture in a blood vessel wall and observing a characteristic of blood at the proximal end of the introducer assembly. In both techniques, a waveform of the blood pressure at the distal end of the introducer assembly may be displayed on a display to provide additional information to a surgeon as to the relative position of the components with respect to various tissues.
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Åkerfeldt Dan
Tenerz Lars
Foley & Lardner LLP
Nasser Robert L.
Natnithithadha Navin
Radi Medical Systems AB
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