82 results about "Transcatheter aortic" patented technology

Inflatable medical devices and methods for making and using the same are disclosed. The devices can be medical invasive balloons, such as those used for transcutaneous heart valve implantation, such as balloons used for transcatheter aortic-valve implantation. The balloons can have high strength, fiber-reinforced walls.

The invention provides a transcatheter aortic valve and preparation method thereof. The transcatheter aortic valve comprises a radially telescopic reticular valve frame, pedal skirts and multiple lobes, wherein the petal skirts are arranged on the inner side of the petal holder, the lobes are located in the lumen of the valve carrier, wherein the petal skirt is divided into a first region and a second region, the first region faces an inflow end of the aortic valve, the second region faces the outflow end of the aortic valve and the second region is provided with a mesh hole capable of communicating the inside and outside of the valve frame. The transcatheter aortic valve provided by the invention solves the problems that the coronary orifice is easy to be blocked after the aortic valve isimplanted in the prior art and the aortic valve is suitable for a patient.

A transcatheter atria-ventricular valve prosthesis for functional replacement of an atrio-ventricular valve in a connection channel, having a circumferential connection channel wall structure, between atrial and ventricular chambers of a heart, including an inner device to be disposed in the interior of the connection channel, the inner device having a circumferential support structure which is radially expandable and having a valve attached to the circumferential support structure, and an outer device to be disposed on the exterior of the connection channel, wherein the outer device at least partly extends around the inner device at a radial distance to the inner device, wherein the inner and outer devices form a securing mechanism for securing the circumferential connection channel wall structure therebetween.

A method and system for automated intervention planning for transcatheter aortic valve implantations using computed tomography (CT) data is disclosed. A patient-specific aortic valve model is detected in a CT volume of a patient. The patient-specific aortic valve model is detected by detecting a global location of the patient-specific aortic valve model in the CT volume, detecting aortic valve landmarks based on the detected global location, and fitting an aortic root surface model. Angulation parameters of a C-arm imaging device for acquiring intra-operative fluoroscopic images and anatomical measurements of the aortic valve are automatically determined based on the patient-specific aortic valve model.

Described herein is a guide wire that includes one, two or multiple pressure transducers for use in TAVI. The guide wire may include an aortic pressure sensor spaced from a left ventricular pressure sensor with sufficient length to allow the aortic pressure sensor to be located in the aorta while the ventricular pressure sensor is simultaneously located in the left ventricle. The pressure readings between the left ventricle and aorta may be subtracted to determine an improved indication of the prognosis of a patient with intermediate post-TAVR aortic regurgitation after assessment with transesophageal echocardiography.

Described herein is a guide wire that includes one, two or multiple pressure transducers for use in TAVI. The guide wire may include an aortic pressure sensor spaced from a left ventricular pressure sensor with sufficient length to allow the aortic pressure sensor to be located in the aorta while the ventricular pressure sensor is simultaneously located in the left ventricle. The pressure readings between the left ventricle and aorta may be subtracted to determine an improved indication of the prognosis of a patient with intermediate post-TAVR aortic regurgitation after assessment with transesophageal echocardiography.

A method that includes generating a contrast feature curve for a medical image sequence including a plurality of frames, where the contrast feature curve represents contrast feature values of the frames. The method further includes detecting a peak in the contrast feature curve, and determining whether the peak corresponds to at least one of contrast injection in an aortic root, contrast injection in a balloon, and a non-contrast injected region.

This transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve, is characterised in that it comprises a flexible body (1) acting as a catheter and having a soft and flexible end piece (2) that engages with a previously inserted wire guide (g) suitable for passing through the flaps of the valve above the part where the calcified tissue needs to be removed, said end piece (2) having at least one cutting system (3) comprising two motorised rotating cutting heads (3a) and (3b) disposed coaxially one above the other, the head (3a) located at the end of the end piece and acting first to remove the calcified tissue, has arrangements suitable for making a rough cut by grinding, while the other head (3b) has arrangements suitable for making a fine cut by grinding, said cutting system being mounted in combination with a vacuum suction means (4), said end piece (2) being provided with an adjustable guide means (5) suitable for engaging with the calcified tissue over the course of the ablation operation performed by the cutting system (3) in combination with a spiral path effect applied to the end piece.

A method and system for automated intervention planning for transcatheter aortic valve implantations using computed tomography (CT) data is disclosed. A patient-specific aortic valve model is detected in a CT volume of a patient. The patient-specific aortic valve model is detected by detecting a global location of the patient-specific aortic valve model in the CT volume, detecting aortic valve landmarks based on the detected global location, and fitting an aortic root surface model. Angulation parameters of a C-arm imaging device for acquiring intra-operative fluoroscopic images and anatomical measurements of the aortic valve are automatically determined based on the patient-specific aortic valve model.

The present disclosure relates to a device assembly and a method for treating heart failure by normalizing elevated blood pressure in the left atrium of a heart of a mammal. Disclosed herein is a transcatheter interatrial septum excision device assembly configured to create a sized interatrial aperture between the right and left atria of a heart for the relief of elevated left atrial pressure. The device assembly comprises a delivery catheter, a tissue stabilizer attached to a first catheter having a central lumen and a penetrating tip that permits passage of a guidewire, and a cutter attached to a second catheter having a central lumen that permits passage of the first catheter. Alternative configurations comprise a (third) catheter having a central lumen that permits passage of the aforementioned components to and from the right atrium, a tissue retention mechanism and an optional coaxial alignment mechanism.

The invention relates to a transcatheter aortic valve replacement auxiliary device which comprises a balloon body capable of contracting in the radial direction, the balloon body comprises a far-end part, a near-end part and a middle part located between the far-end part and the near-end part, and the far-end part is converged at the far end; the periphery of the middle part is provided with a plurality of fiber belts and a salient point array; the fiber bands intersect with each other, and the fiber bands and the salient point array area are at least partially overlapped; the near-end part converges at the near end. The fiber belt and the salient point array are arranged in the middle of the balloon of the transcatheter aortic valve replacement auxiliary device, so that the friction force on the surface of the balloon can be increased, and the balloon is prevented from sliding relative to the aortic valve in the pre-expansion process. Due to the fact that the surface of the balloon is covered with the fiber band, the overall compression resistance of the balloon is improved, the balloon can bear larger pressure in the pre-expansion link, and the diseased position of a valve of a patient can be fully expanded conveniently.