Perfusion-occlusion apparatus
First Claim
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1. A perfusion-occlusion apparatus for use in occluding a portion of a lumen and perfusing fluid through the lumen, comprising:
- a tube having at least one lumen, a proximal end and a distal end; and
first and second occlusion members provided in the vicinity of said distal end and spaced from one another to define an occlusion section having first, second and third portions, said first and second occlusion members being positioned in said first and third portions, at least a substantial portion of said occlusion section comprising an elongate shield that when contacted by suture needles or like piercing instruments along its length substantially resists perforation of said tube.
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Abstract
A perfusion-occlusion catheter provides an occluded region in a vessel to facilitate, for example, an anastomosis in the region, while providing a path for perfusing fluid (blood) through the path for delivery in the vessel downstream from the occluded region. According to one aspect of the invention, at least a portion of the catheter that effects vessel occlusion comprises a shield that when exposed to suture needles or like piercing instruments deflects or resists perforation.
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Citations
36 Claims
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1. A perfusion-occlusion apparatus for use in occluding a portion of a lumen and perfusing fluid through the lumen, comprising:
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a tube having at least one lumen, a proximal end and a distal end; and first and second occlusion members provided in the vicinity of said distal end and spaced from one another to define an occlusion section having first, second and third portions, said first and second occlusion members being positioned in said first and third portions, at least a substantial portion of said occlusion section comprising an elongate shield that when contacted by suture needles or like piercing instruments along its length substantially resists perforation of said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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20. A surgical kit for preparing an anastomosis site comprising:
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a catheter having a tube having at least one lumen and a proximal end and a distal end, at least first and second occlusion members coupled to said tube and spaced from one another to define an occlusion section in the vicinity of said distal end, and an elongate protective shield positioned about or within a substantial portion of said occlusion section to substantially resist perforation of said tube from a surgical cutting instrument or like piercing instrument; and instructions for use of said catheter for occluding a portion of a vessel lumen at the anastomosis site and perfusing fluid through the vessel lumen.
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Specification