22 results about "Septal wall" patented technology

An introductory lead system can include a first implantable lead having a first electrode and a second implantable lead having a second electrode guided to an implant site by the first implantable lead. The second electrode can be implanted in a patient's heart at the same implant site as the first electrode or at a second implant site. The introductory lead system can be delivered to one or more implant sites using various methods, including at the Koch triangle for ventricular free wall to atrium (VfA) therapy, at the right ventricular septal wall for dual bundle branch pacing, or in the coronary vasculature for left-sided sensing and pacing.

The present technology is generally directed to interatrial shunting systems and associated devices and methods. For example, a system configured in accordance with embodiments of the present technology can include a shunting element implantable into a patient at or adjacent a septal wall. The shunting element can have a lumen that fluidly connects a left atrium and a right atrium of the patient to facilitate blood flow therebetween when the shunting element is implanted. In some embodiments, the system further includes a flow control element to selectively control blood flow between the left atrium and the right atrium.

The present invention relates to a multi-electrode lead device comprising an inter-electrode portion between a distal first electrode and a proximal second electrode wherein the inter-electrode portion comprises two or more additional surface electrodes ("directional" surface electrodes) having a reduced circumferential width for directional pacing, and arranged in an axial sequence to obtain an elongated right bundle branch pacing region. Thus, there is no need for multiple lead models for different anatomical structures and / or preoperative examinations to measure the ventricular septal wall thickness. Further, the pacing direction of the additional directional surface electrode may be optimized / adjusted by rotating the lead device about its longitudinal axis, thus optimizing / adjusting the pacing efficiency of the additional directional surface electrode.

A method of sensing a physiological parameter involves advancing a delivery catheter to a right atrium of a heart of a patient via a transcatheter access path, advancing the delivery catheter through an atrial septal wall into a left atrium of the heart, deploying a distal anchor of a sensor implant device from the delivery catheter, anchoring the distal anchor of the sensor implant device to a first pulmonary vein, withdrawing the delivery catheter from the first pulmonary vein, thereby exposing at least a portion of a sensor module of the sensor implant device in the left atrium, deploying a proximal anchor of the sensor implant device from the delivery system, anchoring the proximal anchor of the sensor implant device to a second pulmonary vein, and withdrawing the delivery catheter from the heart.

An implantable lead system may include an adjustable lead assembly. The lead assembly may include a fixation member and an implantable lead slidably coupled to and rotatable relative to the fixation member. The implantable lead system may include a telescoping delivery system. The delivery system may include an outer catheter and an inner catheter slidably coupled to and rotatable relative to the outer catheter. The lead assembly may be implanted in a cardiac septal wall through the delivery assembly.

Devices and methods for performing a transseptal puncture procedure using a device which includes either an untapered or tapered blunt end cannula disposed in an introducer carrying a sharp guidewire disposed longitudinally through the lumen of the blunt cannula, and a blunt end dilator wherein the guidewire is flexible and has an atraumatic shape at its tip. The cannula gives the more flexible introducer a defined shape and steerabilty allowing an ordinarily skilled physician to easily access a selected location on the septal wall of the heart for transseptal puncture and introducer placement thereacross without employing an exposed sharp end needle during the procedure.

A catheter apparatus includes a first catheter, a housing configured to contain a laceration device in the retracted configuration, and a distal attachment device. In aspects, the first catheter can be within the outer catheter, and the housing can be movably attached to the outer catheter and surround a portion of the first catheter. In aspects, the housing can be within the first catheter, and the laceration device can extend beyond the first catheter in a deployed configuration. Methods of ameliorating septal hypertrophy of a heart include positioning a distal end of a first catheter at a first location proximate an aortic valve and extending the first catheter towards an apex of a left ventricle. Methods include anchoring the distal end to a second location proximate the apex. Methods include activating a laceration device to lacerate a portion of the septal wall between the apex and the aortic valve.

The present technology is directed to adjustable interatrial shunting systems that selectively control blood flow between the left atrium and the right atrium of a patient. The adjustable interatrial devices include a shunting element having an outer surface configured to engage native tissue and an inner surface defining a lumen that enables blood to flow from the left atrium to the right atrium when the system is deployed across the septal wall. The systems can include an actuation assembly for selectively adjusting a geometry of the lumen and / or a geometry of a lumen orifice to control the flow of blood through the lumen.

The present invention relates to medical devices. More specifically, the present invention describes a vascular device that allows large bore transseptal access with subsequent re-entry into the atrium by pre-placing a closure / tissue access suture prior to performing an atrial septostomy. Generally, the device can include a delivery catheter for puncturing and cutting the atrial septum. An anchor of the delivery catheter can secure the suture in the atrium to the septal wall, e.g., the left atrium. The incision can be formed by an expandable cutting tool that can use mechanical or radiofrequency (RF) energy without disturbing the suture. After the cutting tool forms the incision, a therapeutic device can be advanced through the tissue plane. The incision can be closed with the previously placed suture.

An implantable medical system may provide atrioventricular synchronous pacing using the ventricular septal wall. The system may include a ventricular electrode coupled to an intracardiac housing or a first medical lead implantable in the ventricular septal wall of the patient's heart to deliver cardiac therapy to or sense electrical activity of the left ventricle of the patient's heart and a right atrial electrode coupled to a leadlet or second medical lead to deliver cardiac therapy to or sense electrical activity of the right atrium of the patient's heart. A right ventricular electrode may be coupled to the intracardiac housing or the first medical lead and implantable in the ventricular septal wall of the patient's heart to deliver cardiac therapy to or sense electrical activity of the right ventricle of the patient's heart.

Closure devices that selectively control blood flow between the right atrium and the left atrium of a heart of a patient. The control of blood flow can be based on detected values from a pressure sensor. The closure devices can include a body configured to engage native tissue when the device is deployed across the septal wall. In a first state at least a portion of (an inner surface of) a lumen is closed, preventing blood flow through the closure device. In a second state, the lumen is open to enable blood flow from the left atrium to the right atrium. A closure element can be selectively adjusted to control the flow of blood through the lumen. A volume of an expandable chamber can be increased or decreased to place the closure device into the first state or the second state.

The present disclosure includes devices and techniques for threading one or more catheters to the apex or base of the right ventricle by transfemoral vein access to the right ventricle. The catheter can be passed through to turn upward, directed towards the mitral valve, by puncturing the ventricular septum into the left ventricle through the ventricular side or right side of the heart. From this entry point in the left ventricle, flail mitral valve leaflets can be sutured and tethered, pulled back into place, and re-attached with grounding anchors in the right ventricle, or embedded in the septal wall. The ventricular septal crossing technique may include passing a coaxial conduit through a first access conduit, where the first access conduit may act as a guide to direct an inner or second coaxial conduit toward a flail mitral valve leaflet.

The present invention relates to a multi-electrode lead device that includes an inter-electrode section between a first distal electrode and a second proximal electrode. The inter-electrode section includes two or more additional surface electrodes ("directional" surface electrodes) arranged axially to achieve a narrow circumferential and elongated right bundle branch pacing region for directional pacing. Therefore, multiple lead models are not required to measure septal wall thickness for different anatomical structures and / or pre-operative testing. Furthermore, the pacing direction of the additional directional surface electrodes, and thus pacing efficiency, can be optimized / adjusted by rotating the lead device around its longitudinal axis.

An example medical device includes an elongated support member defining a longitudinal axis and a plurality of expandable members at a distal portion of the elongated support member positioned circumferentially about the elongated support member. At least a portion of each of the expandable members is configured to radially extend from the elongated support member. Each expandable member of the plurality of expandable members comprises a respective cutting element, each cutting element comprising a cutting surface facing towards the longitudinal axis and configured to initiate a respective cut of septal wall tissue at a first end of the respective cut and to cut the septal wall tissue from the first end of the cut to a second end of the respective cut to form a multi-cuspid valvular shunt. The second end of the cut comprises an intersection of the plurality of cuts of the plurality of cutting elements.

A closure device for sealing an atrial septal defect is provided. The closure device includes a distal closure portion and a proximal closure portion having a peripheral frame. The distal closure portion includes a distal membrane covering a plurality of distal fingers that extend in a distal direction. The proximal closure portion includes a proximal membrane covering a plurality of proximal fingers that extend in a proximal direction. The closure device also includes a waist section extending axially between the plurality of distal fingers and the plurality of proximal fingers. The distal closure portion is configured to sealingly engage one of the left or right side of a septal wall, the proximal closure portion is configured to sealingly engage the other of the left or right side of the septal wall, and the waist section is configured to be positioned and centered in an atrial septal defect between the left and the right septal wall.

The invention provides a detection method and system for non-invasively evaluating the degree and position of functional myocardial ischemia. The method comprises the following steps: acquiring 12-lead high-frequency electrocardiosignal data of a testee; preprocessing the signal, and extracting a QRS wave band signal; performing signal averaging on the qualified QRS wave bands according to leads to generate 12 average high-frequency QRS; extracting a feature combination reflecting the functional myocardial ischemia and having clinical physiological significance from the signals; mapping leads to the heart apex, the front wall, the dividing wall, the lower wall and the side wall and aggregating regional features; obtaining a region score through linear combination; monotonicity is calibrated as regional ischemia percentage by adopting isotonic regression; and outputting the total heart ischemia percentage and the ischemia position in an equal-weight average manner. The method is highly related to the SPECT / CT gold standard, the degree and position of functional myocardial ischemia can be noninvasively and accurately detected, the method is not limited by detection sites, a new method is provided for checking myocardial ischemia, and the incidence rate of malignant heart diseases is reduced.

The present technology relates to intracardiac pressure monitoring devices, and associated systems and methods. In some embodiments, the present technology includes a device for monitoring pressure within a patient's heart. The device can include a pressure sensor configured to reside within a first chamber of a heart of a patient, and a pressure transmission element configured to extend from the first chamber through a septal wall to a second chamber of the heart of the patient. When the device is implanted in the patient's heart, the pressure transmission element is configured to transmit pressure from the second chamber to the pressure sensor residing within the first chamber.

Adjustable shunting systems providing angled flow between two body regions, such as the right atrium and the left atrium, and associated devices and methods are disclosed herein. In some embodiments, the adjustable shunting system includes an anchor structure configured to stabilize the shunting system at a target anatomical structure between the two body regions, such as a septal wall, and an actuator coupled to the anchor structure. The actuator can define a lumen extending between the two body regions at a non-orthogonal angle relative to an axis normal to a plane defined by the anchor structure and / or the anatomical part. The actuator can be selectively controllable to adjust a size of the lumen.

The invention relates to medical implant (1) that is adapted to close a defect (D) or a cavity, preferably a defect in an atrial or septal wall (W) or a left atrial appendage. The implant (1) comprises an occlusion device (6) and has two states. It is adapted to, in a first state, be deployed to a defect site (D), where it can be brought into a second state by an activation mechanism. It is adapted to close said defect (D) in said second state.

A method of treating mitral valve stenosis in a human heart includes advancing a delivery apparatus through a right femoral vein, across a septal wall, and through a calcified mitral valve. A prosthetic heart valve is provided along a distal end portion of the delivery apparatus, wherein the prosthetic heart valve includes a metallic frame having a plurality of tissue-engaging elements positioned along an exterior surface and a leaflet structure for replacing the function of the calcified mitral valve. The prosthetic heart valve is radially expanded within an annulus of the calcified mitral valve such that at least some of the tissue-engaging elements of the prosthetic heart valve embed into the annulus. After radial expansion, the prosthetic heart valve is retained in position within the annulus via the tissue-engaging element and the leaflet structure replaces the function of the native mitral valve.

An implantable lead system may include an adjustable lead assembly. The lead assembly may include a fixation member and an implantable lead slidably coupled to and rotatable relative to the fixation member. The implantable lead system may include a telescoping delivery system. The delivery system may include an outer catheter and an inner catheter slidably coupled to and rotatable relative to the outer catheter. The lead assembly may be implanted in a cardiac septal wall through the delivery assembly.

A method, system and device for implanting an electrode assembly of an implantable medical device in a patient's heart. Positioning one or more radiopaque markers in a coronary sinus of the patient's heart. Positioning, by using the one or more positioned radiopaque markers as a fluoroscopic visual reference, a distal tip of a delivery catheter within a right atrium of the patient's heart so that a distal opening of a lumen of the catheter is against a septal wall of the heart at a location between the ostium of the coronary sinus and the A-V nodal area of the right atrium, and so that the tip of the catheter is generally directed toward a left ventricle of the patient's heart. Advancing the electrode assembly through the lumen of the catheter and into the septal wall.