Medical device for septal crossing with trapping features

Abstract

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include an elongate shaft having a proximal end region and a distal end region. A first lumen may be defined in the shaft. A second lumen may be defined in the shaft. The distal end region may include a common lumen region in fluid communication with the first lumen and the second lumen. A deflectable member may be disposed within the shaft. The deflectable member may be designed to shift between a first configuration where the deflectable member directs a first medical device disposed within the common lumen region into the first lumen and a second configuration where the deflectable member allows a second medical device to move between the common lumen region and the second lumen.

What is claimed is: 
     
         1 . A medical device system, comprising:
 a catheter having a first lumen defined therein, a second lumen defined therein, and a common lumen in fluid communication with the first lumen and the second lumen;   a needle disposed in the second lumen; and   a deflectable member disposed within the catheter, the deflectable member being designed to shift between a first configuration where the deflectable member covers the second lumen and is configured to direct a medical device disposed within the common lumen into the first lumen and a second configuration where the deflectable member uncovers the second lumen.   
     
     
         2 . The system of  claim 1 , wherein a portion of the deflectable member is coupled to an internal region of the catheter. 
     
     
         3 . The system of  claim 1 , wherein a portion of the deflectable member is coupled to an internal region of the catheter. 
     
     
         4 . The system of  claim 1 , wherein the deflectable member is biased to be in the first configuration. 
     
     
         5 . The system of  claim 1 , wherein the deflectable member includes a spring ribbon wire. 
     
     
         6 . The system of  claim 1 , wherein the deflectable member includes a one-way valve. 
     
     
         7 . The system of  claim 1 , wherein the first lumen, the second lumen, or both have a constant diameter. 
     
     
         8 . The system of  claim 1 , wherein along at least a portion of the catheter, the first lumen, the second lumen, or both have a variable diameter. 
     
     
         9 . The system of  claim 1 , further comprising a trapper balloon disposed within the first lumen. 
     
     
         10 . The system of  claim 9 , wherein the catheter defines a third lumen in fluid communication with the trapper balloon. 
     
     
         11 . The system of  claim 1 , wherein the catheter defines a shaping member lumen and wherein a shaping member is disposed within the shaping member lumen. 
     
     
         12 . The system of  claim 1 , further comprising a distal balloon coupled to a distal end region of the catheter. 
     
     
         13 . The system of  claim 12 , wherein the catheter defines a distal balloon lumen in fluid communication with the distal balloon. 
     
     
         14 . The system of  claim 12 , wherein the distal balloon includes a compliant material. 
     
     
         15 . A system, comprising:
 an elongate shaft having a proximal end region and a distal end region;   a first lumen defined in the shaft;   a second lumen defined in the shaft;   wherein the first lumen and the second lumen merge into a common lumen along the distal end region of the shaft;   a needle disposed in the second lumen; and   a deflectable member disposed within the shaft, the deflectable member being designed to shift between a first configuration where the deflectable member is configured to direct a medical device from the common lumen into the first lumen and a second configuration where the deflectable member is deflected in order to allow the needle to shift between the common lumen and the first lumen.   
     
     
         16 . The system of  claim 15 , wherein the deflectable member is biased to be in the first configuration. 
     
     
         17 . The system of  claim 15 , further comprising a trapper balloon disposed within the guidewire lumen and wherein the shaft defines a trapper balloon lumen in fluid communication with the trapper balloon. 
     
     
         18 . The system of  claim 17 , wherein the shaft defines a shaping member lumen and wherein a shaping member is disposed within the shaping member lumen. 
     
     
         19 . The system of  claim 18 , further comprising a compliant balloon coupled to the distal end region of the shaft and wherein the shaft defines a compliant balloon lumen in fluid communication with the compliant balloon. 
     
     
         20 . A method for medical treatment, the method comprising:
 advancing a catheter into a body lumen, the catheter having a first lumen defined therein, a second lumen defined therein, and a common lumen in fluid communication with the first lumen and the second lumen;   a deflectable member disposed within the catheter, the deflectable member being designed to shift between a first configuration where the deflectable member covers the second lumen and is configured to direct a medical device disposed within the common lumen into the first lumen and a second configuration where the deflectable member uncovers the second lumen;   wherein a needle is disposed in the second lumen, passes through the common lumen, and extends distally beyond a distal end of the catheter;   proximally retracting the needle into the second lumen;   wherein proximally retracting the needle shifts the deflectable member from the second configuration to the first configuration; and   extending a guidewire between the first lumen and the common lumen.