Tricuspid regurgitation treatment tool to be inserted into pulmonary artery

Abstract

A tricuspid regurgitation treatment tool to be inserted into the pulmonary artery is proposed. The tricuspid regurgitation treatment tool to be inserted into the pulmonary artery is used to verify whether the right ventricular dysfunction may occur when treating the tricuspid regurgitation by surgeries or other permanent treatments. A test insertion of the tricuspid regurgitation treatment tool to be inserted into the pulmonary artery is made to pass obliquely through the tricuspid valve of a patient, and after a certain time has elapsed, the tool is removed. The tricuspid regurgitation treatment tool to be inserted into the pulmonary artery includes: a blocking part blocking the tricuspid valve; and an insertion tube provided with a guidewire-guiding lumen formed therein to be movable along the guidewire.

1 . A transcatheter device comprising:
 a connecting tube having a proximal segment having a proximal end, a distal segment having a distal end, and a middle segment between the proximal and distal segments wherein the connecting tube has a lumen for insertion of a guidewire; and   a blocking part mounted on the middle segment of the connecting tube,   wherein the distal segment of the connecting tube has only a single pre-determined natural bend.   
     
     
         2 . The transcatheter device of  claim 1 , wherein the blocking part is an inflatable balloon. 
     
     
         3 . The transcatheter device of  claim 1 , wherein the proximal end of the proximal segment comprises a fixing member for anchoring in an inferior vena cava. 
     
     
         4 . The transcatheter device of  claim 1 , wherein the distal end of the distal segment comprises a fixing member for anchoring in a pulmonary artery. 
     
     
         5 . A method of treating tricuspid valve regurgitation in a patient's heart, comprising:
 having a transcatheter device comprising below;   (i) a connecting tube having a proximal segment having a proximal end, a distal segment having a distal end, and a middle segment between the proximal and distal segments; and   (ii) a blocking part mounted on the middle segment of the connecting tube,   inserting the transcatheter device into an inferior vena cava;   advancing the transcatheter device through a right atrium of the heart;   advancing the transcatheter device across a tricuspid valve and into a right ventricle of the heart;   advancing the transcatheter device towards a pulmonary artery; and   positioning the blocking part between the leaflets of the tricuspid valve.   
     
     
         6 . The method of  claim 5 , the method further comprises:
 anchoring the fixing member of the distal segment in the pulmonary artery.   
     
     
         7 . The method of  claim 5 , the method further comprises:
 anchoring the fixing member of the proximal segment in the inferior vena cava.   
     
     
         8 . The method of  claim 5 , the method further comprises:
 advancing the guidewire through the inferior vena cava;   advancing the guidewire through the right atrium;   advancing the guidewire to traverse the tricuspid valve and into the right ventricle;   introducing the guidewire into the connecting tube; and   advancing the transcatheter device over the guidewire.   
     
     
         9 . The method of  claim 5 , the method further comprises:
 inserting the transcatheter device into a sheath tube; and   removing the transcatheter device from the sheath tube.   
     
     
         10 . A method of positioning a transcatheter device having a blocking part, the method comprises:
 inserting the transcatheter device into the inferior vena cava;   advancing the transcatheter device through a right atrium of the heart;   advancing the transcatheter device across a tricuspid valve and into a right ventricle of the heart;   advancing the transcatheter device towards a pulmonary artery; and   positioning the blocking part between the leaflets of the tricuspid valve.   
     
     
         11 . The method of  claim 10 , the method further comprises:
 anchoring a distal end of the transcatheter device in the pulmonary artery.   
     
     
         12 . The method of  claim 10 , the method further comprises:
 anchoring a proximal end of the transcatheter device in the inferior vena cava.   
     
     
         13 . The method of  claim 10 , the method further comprises:
 advancing a guidewire through the inferior vena cava;   advancing a guidewire through the right atrium;   advancing a guidewire to traverse the tricuspid valve and into the right ventricle;   introducing a guidewire into the transcatheter device; and   advancing the transcatheter device over a guidewire.   
     
     
         14 . The method of  claim 10 , the method further comprises:
 inserting the transcatheter device into a sheath tube; and   removing the transcatheter device from the sheath tube.