Method to deliver blood from a heart chamber to vessel

Abstract

A method for revascularizing a coronary vessel with a conduit through the heart wall having a diameter transition in the myocardial leg, wherein blood flow is in the direction of transition from larger to smaller diameter. A method for revascularizing a coronary vessel using an implant with a myocardial leg having a maximum cross-sectional area proximate a first end, and inserting the first end through the myocardium into a heart chamber so that the implant directs blood flow into the coronary vessel. A transmyocardial implant with a myocardial leg including point of minimum diameter and a first end with a larger diameter, and a vessel leg in fluid communication with the myocardial leg.

1 - 17 . (canceled)  
     
     
         18 . A method for increasing the flow of blood to a selected site in a patient's arterial vascular system of the heart, the method comprising the steps of: 
 creating a channel for blood flow from an oxygenated blood source to the selected site in the arterial vascular system of the heart;    maintaining the channel in an open position for blood flow through diastolic and systolic cycles of the heart; and    regulating the blood flow in the channel to minimize blood flow from the coronary vascular system to the blood source during diastole.    
     
     
         19 . The method of  claim 18  wherein the creating step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.  
     
     
         20 . The method of  claim 18  wherein the creating step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.  
     
     
         21 . The method of  claim 18  wherein the creating step includes exposing at least a portion of the patient's heart for surgical access.  
     
     
         22 . The method of  claim 18  wherein the creating step includes advancing a delivery device to the tissue surrounding the blood source.  
     
     
         23 . The method of  claim 18  wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.  
     
     
         24 . The method of  claim 18  wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.  
     
     
         25 . A method for performing a transmyocardial coronary revascularization procedure for the treatment of coronary atherosclerosis caused by an obstruction in the arterial vascular system, the method comprising the steps of: 
 creating a channel for blood flow from an oxygenated blood source to the arterial vascular system distal to the area of obstruction;    maintaining the channel in an open position for blood flow through the diastole and systole cycles of the heart; and    regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the blood source during the diastolic cycle of the-heart.    
     
     
         26 . The method of  claim 25  wherein the creating step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.  
     
     
         27 . The method of  claim 25  wherein the creating step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.  
     
     
         28 . The method of  claim 25  wherein the creating step includes exposing at least a portion of the patient's heart for surgical access.  
     
     
         29 . The method of  claim 25  wherein the creating step includes advancing a delivery device to the tissue surrounding the blood source.  
     
     
         30 . The method of  claim 25  wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.  
     
     
         31 . The method of  claim 25  wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.  
     
     
         32 . A method for treating an obstruction in a patient's cardiovascular system using a non-expandable conduit made of biocompatible material, the method comprising the steps of: 
 inserting the conduit completely through the myocardium of the patient's heart with one end of the conduit extending into the left ventricle and the other end of the conduit extending into the arterial vascular system distal to the area of obstruction;    maintaining the conduit in an open position for blood flow through the diastolic and systolic cycles of the-heart;    regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the left ventricle during the diastolic cycle of the heart.    
     
     
         33 . The method of  claim 32  wherein the inserting step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.  
     
     
         34 . The method of  claim 32  wherein the inserting step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.  
     
     
         35 . The method of  claim 32  wherein the inserting step includes exposing at least a portion of the patient's heart for surgical access.  
     
     
         36 . The method of  claim 32  wherein the inserting step includes advancing a delivery device to the tissue surrounding the blood source.  
     
     
         37 . The method of  claim 32  wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.  
     
     
         38 . The method of  claim 32  wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.  
     
     
         39 . A method for increasing the flow of blood to a selected site in a patient's arterial vascular system, the method comprising the steps of: 
 inserting one end of a conduit into the left ventricle;    inserting the second end of the conduit into the arterial vascular system at the selected site;    maintaining the conduit in an open position for blood flow through the diastolic and systolic cycles of the heart;    regulating the blood flow in the conduit to minimize blood flow from the arterial vascular system to the left ventricle during the diastolic cycle of the heart.    
     
     
         40 . The method of  claim 39  wherein the method includes connecting the ends of the conduit together.  
     
     
         41 . The method of  claim 39  wherein the method includes: 
 accessing the patient's myocardium; and    perforating the myocardium.    
     
     
         42 . The method of  claim 39  wherein the inserting step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.  
     
     
         43 . The method of  claim 39  wherein the inserting step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.  
     
     
         44 . The method of  claim 39  wherein the inserting step includes exposing at least a portion of the patient's heart for surgical access.  
     
     
         45 . The method of  claim 39  wherein the inserting step includes advancing a delivery device to the tissue surrounding the blood source.  
     
     
         46 . The method of  claim 39  wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.  
     
     
         47 . The method of  claim 39  wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.