Perfusion device for maintaining blood flow in a vessel while isolating an anastomosis
First Claim
1. A distal perfusion device for maintaining blood flow in a blood vessel to prevent ischemia while further maintaining a dry anastomosis site to facilitate the suturing procedure during the construction of an anastomosis comprising:
- a flexible central member having and outer diameter and having a centrally disposed lumen for the passage of fluid and a pair of pointed and tapered end members formed at proximal and distal extremities of the central member having integrally formed now-inflatable annular ridges with pre-selected outer diameters greater than the outer diameter of said central member and at least one perforation for the passage of fluid therethrough.
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Accused Products
Abstract
A plurality of embodiments of a distal perfusion device are disclosed, which device facilitates anastomosis constructions by maintaining a dry anastomosis site while simultaneously maintaining blood flow distally in the blood vessel to prevent ischemia and reduce overall patient trauma. The perfusion device is configured for installation into a blood vessel such as a left anterior descending coronary artery through an incision therein, to which is to be grafted a distal end of a blood vessel such as an internal mammary artery. The device includes a central member of selected configuration and material, terminating at either end thereof in respective selectively tapered end members. A lumen extending through the central member and end members, and selected perforations in the end members, maintain blood flow through the perfusion device. A selected portion or portions of the device'"'"'s outer circumference fit snugly within the artery in the regions beyond and/or at the anastomosis site, to maintain the latter free of blood. Several methods for deploying and removing respective embodiments of the device also are illustrated.
266 Citations
22 Claims
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1. A distal perfusion device for maintaining blood flow in a blood vessel to prevent ischemia while further maintaining a dry anastomosis site to facilitate the suturing procedure during the construction of an anastomosis comprising:
a flexible central member having and outer diameter and having a centrally disposed lumen for the passage of fluid and a pair of pointed and tapered end members formed at proximal and distal extremities of the central member having integrally formed now-inflatable annular ridges with pre-selected outer diameters greater than the outer diameter of said central member and at least one perforation for the passage of fluid therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of employing a perfusion device at an anastomosis site in a vessel, comprising the steps of:
inserting a first tapered end member of the perfusion device through an arteriotomy, advancing the first end member into the vessel beyond the apex of the arteriotomy wherein the first end member has at least one annular ridge with a preselected diameter to engage the interior of the vessel, inserting a second tapered end member beyond the opposite apex of the arteriotomy such that the distal perfusion device is positioned coaxially within the vessel maintaining blood flow distally through the vessel while the perfusion device is in place. - View Dependent Claims (16, 17, 18, 19)
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20. Apparatus for maintaining blood flow in a blood vessel to prevent ischemia while further maintaining a dry anastomosis site to facilitate the suturing procedure during the construction of an anastomosis of said vessel with a second vessel, comprising:
a selection of distinctly sized distal perfusion devices, each said device comprising a flexible central member having an outer diameter and having a centrally disposed lumen and a pair of pointed and tapered end members formed at the proximal and distal extremities of the central member, wherein said end members of each of said devices has integrally formed now-inflatable annular ridges with preselected outer diameters greater than the outer diameter of said central member and at least one perforation for the passage of fluid therethrough. - View Dependent Claims (21, 22)
Specification