Surgery – Instruments – Internal pressure applicator
Reexamination Certificate
2001-10-05
2004-06-29
Truong, Kevin T. (Department: 3731)
Surgery
Instruments
Internal pressure applicator
C606S113000
Reexamination Certificate
active
06755847
ABSTRACT:
FIELD OF THE INVENTION
This invention relates generally to intravascular medical devices. More particularly it relates to a device used for capturing emboli in a fluid vessel during a variety of intravascular medical procedures and a method of manufacture for that device.
BACKGROUND OF THE INVENTION
There are a number of intravascular procedures where emboli may be created in the vasculature. It may be desirable to capture these emboli before they flow downstream.
SUMMARY OF THE INVENTION
Embodiments of the invention pertain to a device for capturing emboli in fluid flowing in a body vessel lumen and a method of manufacturing the device. Certain embodiments of the invention more particularly pertain to a frame and a filter material portion of the emboli capturing system. In certain embodiments the frame comprises a plurality of proximally fixed elongate members attached to a collar which are expandable into a generally helical pattern. This generally helical pattern of elongate members is configured to open the mouth of the filter to a generally circular shape which contacts the walls of the body vessel lumen to channel the fluid through the filter.
The frame and collar embodiment may be manufactured from a tube of a suitable material such as Nitinol by cutting a number of slits down a substantial portion of the tube and shape setting the elongate members resulting from the slits. This method of manufacture, where the elongate members and the collar are formed from a single tube, provides a ready means of orienting the elongate members with respect to each other and may easily be adapted to frame and filter devices having a different strut configuration.
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Crompton Seager & Tufte LLC
Sci-Med Life Systems, Inc.
Truong Kevin T.
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