Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Combined with surgical tool
Reexamination Certificate
2005-01-25
2005-01-25
Isabella, David J. (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Combined with surgical tool
C033S511000
Reexamination Certificate
active
06846324
ABSTRACT:
Anatomical orifice sizers that are optimally proportional to an associated prosthetic device such as a heart valve, and methods of use are provided. The sizers are desirably slightly larger than the rigid mounting diameter of the corresponding heart valve. The heart valve sizer may be cylindrical and have a diameter about 0.3 mm larger than the valve mounting diameter. The sizer preferably has a length of between about 19 mm to 22 mm, and the edges are desirably rounded to a minimum 1 mm radius. The method includes providing a set of cylindrical sizers having varying diameters; sequentially inserting at least two of the sizers through the annulus; measuring the push force needed to pass each sizer through the annulus; selecting a valve corresponding to the sizer for which the measured push force is between about 150 and 300 grams.
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Booklet entitled “Carpentier-Edwards ® Pericardial Bioprostheses Mini-Symposium,” Chicago, IL, Baxter Healthcare Corporation, Edwards CVS Division, Apr. 24, 1993; pp 51-62, “Sizing and Implantation”.
Brochure entitled “Judge Our Pericardial Valve by its Appearance and You will Only Get Half the Picture,” Edwards CVS Division, Baxter Healthcare Corporation, 1969.
Chattopadhyay Urmi
Cumberbatch Guy L.
Edwards Lifesciences Corporation
Isabella David J.
Yadav Rajiv
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