30 results about "Catheter procedure" patented technology

A transapical removal device that can be deployed in a catheter procedure to capture for removal or alteration a mitral valve clip or heart tissue, such as the anterior leaflet of the mitral valve, and methods of use are disclosed. The removal device includes a delivery catheter configured to be deployed near a mitral valve using a guide catheter. The delivery catheter has a snare head at the distal end, which assumes a collapsed state during movement of the delivery catheter through the guide catheter and deployed state for capturing a mitral valve clip or anterior leaflet. The snare head has one or more ablation delivery catheters configured to ablate tissue surrounding the pre-positioned mitral valve clip or anterior leaflet. In some arrangements within the scope of the present disclosure, the removal device includes a deployment mechanism for deploying a new transcatheter valve into the mitral valve.

Methods of deploying and securing a heart valve prosthesis are disclosed. A heart valve prosthesis (100) having a plurality of anchor guides (212) is loaded within a catheter-based delivery device, wherein each of the anchor guides is releasably engaged by a respective elongate member (338) and wherein tensioning of the elongate members aids in collapsing the prosthesis during loading. The delivery device is advanced via a transcatheter procedure to position the heart valve prosthesis at an implantation site. The heart valve prosthesis undergoes controlled deployment by controlling the release of tension on the elongate members. After deployment of the heart valve prosthesis, an anchor tool (660) is advanced along a guide member to the anchor guide positioned at a securement site. When the securement site is reached, an anchor clip (662) is released from the anchor tool to secure the prosthesis to the heart.

A storage unit stores data of a plurality of previous images of a plurality of regions generated during a previous catheter procedure. A route map generating unit arranges a plurality of first catheter images or blood vessel images included in the plurality of previous images according to the positional relationship between the plurality of regions to generate a route map indicating the distribution of the plurality of first catheter images or blood vessel images. A specifying unit specifies a specific portion of a second catheter image included in a current image generated during a current catheter procedure. A calculating unit calculates the position of the specified specific portion on the route map on the basis of the positional relationship between the current image and the previous image. A display unit displays a specific previous image corresponding to the calculated position.

A catheter procedure system includes a bedside system having a guide wire, a guide wire advance / retract actuator coupled to the guide wire and a guide wire rotate actuator coupled to the guide wire and a workstation coupled to the bedside system. The workstation includes a user interface, at least one display and a controller coupled to the bedside system, the user interface and the at least one display. The controller is programmed to advance the guide wire through a path using the guide wire advance / retract actuator, determine if the guide wire is in a desired path based at least on at least one image of a region of interest, rotate the guide wire using the guide wire rotate actuator if the guide wire is not in the desired path, wherein the guide wire is rotated a predetermined amount, and retract the guide wire using the guide wire advance / retract actuator. The steps of advancing the guide wire and retracting and rotating the guide wire using guide wire advance / retract actuator and the guide wire rotate actuator are repeated until the guide wire is in the desired path. The guide wire is advanced to a desired position using the guide wire advance / retract actuator.

Catheter for use in biliary procedures, including a shaft having a proximal end and a distal end. A guidewire lumen is carried by the shaft extending from a location proximal the distal end of the shaft to a location proximate the distal end of the shaft. An opening is included for accessing the guidewire lumen from a location exterior the catheter shaft located distal the proximal end of the shaft. The guidewire lumen may be formed integral the catheter shaft. The catheter may be used in rapid exchange catheter procedures. The catheter may further include a port and channel design including a first opening into the guidewire lumen located proximal the distal end of the shaft, a second opening located proximal the first opening, and a channel extending longitudinally between the first opening and the second opening.

A catheter procedure system includes a bedside system having a guide wire, a guide wire advance / retract actuator coupled to the guide wire and a guide wire rotate actuator coupled to the guide wire and a workstation coupled to the bedside system. The workstation includes a user interface, at least one display and a controller coupled to the bedside system, the user interface and the at least one display. The controller is programmed to advance the guide wire through a path using the guide wire advance / retract actuator, determine if the guide wire is in a desired path based at least on at least one image of a region of interest, rotate the guide wire using the guide wire rotate actuator if the guide wire is not in the desired path, wherein the guide wire is rotated a predetermined amount, and retract the guide wire using the guide wire advance / retract actuator. The steps of advancing the guide wire and retracting and rotating the guide wire using guide wire advance / retract actuator and the guide wire rotate actuator are repeated until the guide wire is in the desired path. The guide wire is advanced to a desired position using the guide wire advance / retract actuator.

A catheter procedure system includes a controller programmed to advance the guide wire through a path using a guide wire advance / retract actuator, determine if a guide wire is in a desired path based at least on at least one image of a region of interest, rotate the guide wire using a guide wire rotate actuator if the guide wire is not in the desired path, wherein the guide wire is rotated a predetermined amount, and retract the guide wire using the guide wire advance / retract actuator. The steps of advancing the guide wire and retracting and rotating the guide wire using guide wire advance / retract actuator and the guide wire rotate actuator are repeated until the guide wire is in the desired path. The guide wire is advanced to a desired position using the guide wire advance / retract actuator.

An interlocking system for a joystick in a catheter procedure system includes a joystick configured to generate a first voltage output signal based on a linear activation of the joystick and a second voltage output signal based on a rotational activation of the joystick. A joystick cover is disposed over the joystick and includes an upper portion having an electrode plating on an inner surface of the upper portion and a lower portion having an inner surface. A capacitive touch detection circuit is coupled to the electrode plating of the upper portion of the joystick cover and is mounted on the inner surface of the lower portion of the joystick cover. The capacitive touch detection circuit is configured to detect a proximal change in capacitance in the electrode plating of the upper portion of the joystick cover and to generate a touch output signal to indicate whether a change in capacitance has been detected. A signal enable circuit is coupled to the joystick and the capacitive touch detection circuit and is configured to generate a linear enable voltage output signal and a rotational enable voltage output signal based on whether a change in capacitance has been detected.

A catheter procedure system includes a bedside system having a percutaneous device, at least one drive mechanism coupled to the percutaneous device and at least one motor coupled to the at least one drive mechanism. The system also includes a workstation that is coupled to the bedside system and includes a user interface and a controller coupled to the bedside system and the user interface. The controller is programmed to receive at last one parameter of the motor, determine a quadrature current of the motor based on at least the at least one parameter, determine a load torque on the motor based on at least the quadrature current, an angular velocity and an angular acceleration and control the operation of the motor based on the load torque, wherein the operation of the motor causes the drive mechanism to move the percutaneous device.

Disclosed herein is a guide wire insertion device for a catheter procedure. The guide wire insertion device for a catheter procedure includes an injection unit (100) including an injection needle, and a guide wire transfer unit (200) which transfers a guide wire so as to insert the guide wire through the injection needle, and the injection unit and the guide wire transfer unit are integrated with each other so as to continuously perform injection of the injection needle and transfer of the guide wire. According to such a configuration, the injection of the injection needle and the insertion of the guide wire may be accurately and easily performed so that a catheter procedure is convenient.

A system for early detection and treatment of catheter-induced ischemic stroke includes a magnetic resonance system (20) and a processor (36). The magnetic resonance system includes: a sequence controller for performing each of a plurality of imaging sequences; and a sequence memory (32) for storing at least a magnetic resonance angiography (MRA) sequence, a diffusion weighted imaging (DWI) sequence, and Perfusion-weighted imaging (PWI) sequences. The processor is programmed to control the magnetic resonance system to perform the steps of: performing an MRA sequence to generate a baseline MRA image; performing a catheter tracking procedure to track the catheter; performing a DWI sequence after the catheter procedure to generate a diffusion-weighted image; performing a PWI sequence to generate a perfusion-weighted image; and combine the diffusion-weighted image and the perfusion-weighted image to generate a combined image for evaluating ischemic stroke.

A catheter system for use during biliary procedures, including a first elongate member carrying a guidewire lumen, and a channel extending longitudinally along the member which provides access to the guidewire lumen and defines two edge surfaces. A second elongate member is also included which is disposed within the guidewire lumen and mates with the cross-sectional profile of the guidewire lumen of the first elongate member, thereby converting a guidewire lumen having a C-shaped design into one having an O-shaped design. The catheter may be used in rapid exchange catheter procedures requiring the use of small diameter guidewires which would otherwise slip out of the channel during use.

The system and method creates immediate supplemental blood flow into an organ by punching a cannula into the organ to remove a core of the organ. The process of punching creates essentially no heat and therefore does not cauterize the wound. In the case of the heart this results in immediate supplemental blood flow into the heart muscle. Animal tests have shown this immediate blood flow is sufficient to sustain the heart even when a major coronary artery is completely blocked. The procedure may be performed in an open surgical field procedure by punching cores from the outside of the heart in or it may be a percutaneous catheter procedure punching cores from the inside-out of an organ.

A method for controlling an x-ray frame rate of an imaging system for a catheter procedure system includes: generating a first control signal indicative of a first frame rate; and providing the first control signal to the imaging system. The imaging system acquires a first set of images at a first frame rate based on a first control signal. At least one parameter of a catheter procedure performed by the catheter procedure system is determined, and a second control signal is generated based on the at least one parameter of the catheter procedure. The second control signal indicates a second frame rate. A second control signal is provided to the imaging system to adjust the first frame rate to a second frame rate. The imaging system acquires a second set of images at a second frame rate and displays the second set of images on the display.

A method for monitoring the seating of a guide catheter during a catheter procedure includes monitoring at least one parameter of the catheter procedure and determining if the at least one parameter indicates that a guide catheter is out of position. If the at least one parameter indicates the guide catheter is out of position, an alert is displayed and the position of the guide catheter is adjusted. The parameter may be, for example, blood pressure, an ST wave of an electrocardiogram, contrast agent, fluoroscopic images of a region including the distal end of the guide catheter and ultrasound signals.

Methods, systems and devices for effectively and safely accessing and verifying a target site within a vessel or body cavity undergoing a catheter-based procedure or treatment. The present invention further includes the accurate delivery an instrument, an implantable device and / or materials to the target site. The present invention is particularly useful for transvenously assessing the suitability of a target site within the coronary vasculature for placement of a pacing electrode and transvenously placing the pacing electrode at the target site.

A process for treating a heart valve involves delivering first and second working catheters to a ventricle of a heart of a patient using a transcatheter procedure, approximating a first pad associated with the first working catheter to a backside of a first papillary muscle of the ventricle, approximating a second pad associated with the second working catheter to a backside of a second papillary muscle of the ventricle, and manipulating one or more sutures physically coupled to at least one of the first and second pads to decrease a distance between the first and second papillary muscles.

A catheter system for use during biliary procedures, including a first elongate member carrying a guidewire lumen, and a channel extending longitudinally along the member which provides access to the guidewire lumen and defines two edge surfaces. A second elongate member is also included which is disposed within the guidewire lumen and mates with the cross-sectional profile of the guidewire lumen of the first elongate member, thereby converting a guidewire lumen having a C-shaped design into one having an O-shaped design. The catheter may be used in rapid exchange catheter procedures requiring the use of small diameter guidewires which would otherwise slip out of the channel during use.