Implantable shunt systems and methods

Abstract

The present technology relates to interatrial shunting systems and methods. In some embodiments, the present technology includes interatrial shunting systems that include a shunting element having a lumen extending therethrough that is configured to fluidly couple the left atrium and the right atrium when the shunting element is implanted in a patient. The system can also include an energy receiving component for receiving energy from an energy source positioned external to the body, an energy storage component for storing the received energy, and/or a flow control mechanism for adjusting a geometry of the lumen.

1 - 50 . (canceled) 
     
     
         51 . A medical device configured to be implanted at a septal wall of a patient, the medical device comprising:
 an interatrial shunt having a frame and a first biocompatible membrane coupled to the frame, wherein the first biocompatible membrane defines a lumen extending therethrough, and wherein the first biocompatible membrane is configured to extend between a left atrium and a right atrium of the patient when the frame is deployed across the septal wall of the patient such that the lumen fluidly connects the left atrium and the right atrium; and   a pressure sensing system having a pressure sensor and a second biocompatible membrane at least partially encasing the pressure sensor,   wherein the second biocompatible membrane resides on a single side of the septal wall in either the left atrium or the right atrium and is configured to be deflected based, at least in part, on a pressure in the respective left atrium or the right atrium.   
     
     
         52 . The medical device of  claim 51  wherein the pressure sensing system is connected to the interatrial shunt. 
     
     
         53 . The medical device of  claim 51  wherein the lumen extends between a first orifice and a second orifice, and wherein the second biocompatible membrane is positioned adjacent to the first orifice or the second orifice. 
     
     
         54 . The medical device of  claim 51  wherein the pressure sensing system further comprises an enclosed cavity between the second biocompatible membrane and the pressure sensor. 
     
     
         55 . The medical device of  claim 54  wherein the enclosed cavity includes a pressure transmission medium in communication with both the second biocompatible membrane and the pressure sensor. 
     
     
         56 . The medical device of  claim 55  wherein the pressure transmission medium is a liquid. 
     
     
         57 . The medical device of  claim 51  wherein the first biocompatible membrane is composed at least in part of ePTFE, polyester, polyurethane, and/or silicone. 
     
     
         58 . The medical device of  claim 51  wherein the second biocompatible membrane is composed at least in part of ePTFE, polyester, polyurethane, and/or silicone. 
     
     
         59 . The medical device of  claim 51 , further comprising an energy receiving component configured to (a) receive energy from an energy source positioned external to the patient’s body, and/or (b) generate energy when exposed to a magnetic or electric field generated by an energy source positioned external to the patient’s body, and wherein the energy received at and/or generated by the energy receiving component is configured to power the pressure sensor. 
     
     
         60 . The medical device of  claim 59  wherein the energy receiving component includes a coil having a plurality of loops arranged coaxial with the lumen. 
     
     
         61 . The medical device of  claim 59  wherein the energy receiving component is configured to abut the septal wall when the medical device is implanted at the septal wall such that the energy receiving component protrudes less than 2 mm away from the septal wall. 
     
     
         62 . The medical device of  claim 59  wherein the energy receiving component is coupled to the interatrial shunt. 
     
     
         63 . The medical device of  claim 59 , further comprising an energy storage component configured to store energy received at and/or generated by the energy receiving component. 
     
     
         64 . The medical device of  claim 63  wherein the energy storage component is positioned at least partially within the second biocompatible membrane. 
     
     
         65 . A medical device configured to be implanted at a septal wall of a patient, the medical device comprising:
 an interatrial shunt having a frame and a first biocompatible membrane coupled to the frame, wherein the first biocompatible membrane defines a lumen extending therethrough between a first aperture and a second aperture, and wherein the first biocompatible membrane is configured to span the septal wall of the patient when the frame is implanted at the septal wall such that the lumen fluidly connects the left atrium and the right atrium; and   a pressure sensing system having a pressure sensor and a second biocompatible membrane at least partially encasing the pressure sensor, wherein the second biocompatible membrane resides on a single side of the septal wall in either the left atrium or the right atrium adjacent the first opening or the second opening, and wherein the second biocompatible membrane is discontinuous with the first biocompatible membrane.   
     
     
         66 . The medical device of  claim 65  wherein the second biocompatible membrane is a pressure responsive membrane configured to deflect in response to changes in blood pressure in the single side of the septal wall. 
     
     
         67 . The medical device of  claim 66  wherein the pressure sensing system further comprises an enclosed cavity containing a pressure transmission medium, and wherein:
 the pressure responsive membrane at least partially covers the enclosed cavity, and 
 the pressure sensor is in communication with the pressure transmission medium. 
 
     
     
         68 . The medical device of  claim 65  wherein the first biocompatible membrane and the second biocompatible membrane are composed of the same material. 
     
     
         69 . The medical device of  claim 65  wherein the first biocompatible membrane and the second biocompatible membrane are composed of different materials. 
     
     
         70 . The medical device of  claim 65  wherein the pressure sensing system is connected to the interatrial shunt. 
     
     
         71 . A medical device configured to be implanted at a septal wall of a patient, the medical device comprising:
 a frame comprising one or more structural elements configured to extend across the septal wall of the patient between a left atrium and a right atrium of the patient;   a first biocompatible membrane at least partially covering the frame and extending between a first portion of the frame configured to reside in the left atrium and a second portion of the frame configured to reside in the right atrium such that the first biocompatible membrane defines a lumen extending therebetween;   a pressure sensor configured to measure a pressure in the left atrium or the right atrium; and   a second biocompatible membrane covering the pressure sensor and configured to fully reside in either the left atrium or the right atrium,   wherein the pressure sensor is coupled to the frame, and   wherein the second biocompatible membrane is discontinuous with the first biocompatible membrane.   
     
     
         72 . The medical device of  claim 71  wherein the second biocompatible membrane is a pressure responsive membrane configured to deflect in response to changes in blood pressure in the left atrium or the right atrium. 
     
     
         73 . The medical device of  claim 71  wherein the one or more structural elements include an energy receiving component configured to (a) receive energy from an energy source positioned external to the patient’s body, and/or (b) generate energy when exposed to a magnetic or electric field generated by an energy source positioned external to the patient’s body, and wherein the energy received at and/or generated by the energy receiving component is configured to power the sensor.