A blood pump system includes a catheter, a pump housing disposed distal of a distal end of the catheter, a rotor positioned at least partially in the pump housing, a controller, and an electrode coupled a distal region of the blood pump. The electrode can be used to sense electrocardiogram (EKG) signals and transmit the signals to a controller of the blood pump. The operation of the blood pump can be adjusted based on the EKG signal and on cardiac parameters derived from the EKG signal. Further, the controller can determine a need for defibrillation or pacing of the patient's heart based on the signal and can administer treatment with electrical shocks to the heart via the electrode coupled to the blood pump. The use of an electrode with a blood pump already in place in the heart allows for more efficient and safer treatment of serious cardiac conditions.

The invention relates to a pressure sensor (100) comprising: a biocompatible housing (110), a biocompatible flexible membrane (120) covering an open portion in the housing (110), a pressure transferring medium, an attachment portion (130), an electrical connection (140), and a pressure sensitive sensor (150).

The invention relates to a pressure sensor (100) comprising: a biocompatible housing (110), a biocompatible flexible membrane (120) covering an open portion in the housing (110), a pressure transferring medium, an attachment portion (130), an electrical connection (140), and a pressure sensitive sensor (150).

A system that includes a cannula and a flexible hypotube attached to the cannula configured to slidably receive an optical fiber. The system may be configured to have a ratio R1 of a diameter of the outer surface of the hypotube to a diameter of the inner surface of the cannula is 1:5>R1>1:25, and/or where the flexible hypotube comprises a tubular portion containing at least one cut extending from the outer surface at least partially through the sidewall of the flexible hypotube, each cut having a maximum width of between 0.01 and 0.1 mm.

Improvements to intracardiac devices such as intracardiac blood pump assemblies, and associated methods. In one example, the present technology includes systems and methods for pacing the heart, and/or performing cardiac ablation using electrodes mounted on a portion of the intracardiac device. In another example, the present technology includes systems and methods for detecting mural thrombi in a patient's heart using electrical sensors or ultrasonic phased arrays mounted on the intracardiac device. In another example, the present technology includes systems and methods for detecting tissue changes and reactions in heart tissue during treatment using one or more temperature sensors. In another example, the present technology includes an improved distal tip for use with an intracardiac device. In another example, the present technology includes systems and methods for maintaining an intracardiac device in a desired position within a patient's heart using magnets or ultrasonic phased arrays mounted on the intracardiac device.

A ventricular support system including a light source, a fiber optic splitter, two or more filters, an intravascular blood pump having two or more sensor heads, and a photodetector is disclosed. At least some of the light transmitted by the light source is split by the fiber optic splitter such that a portion is transmitted to each of the two or more filters. Each portion of light is filtered by one of the two or more filters and transmitted to one of the two or more sensor heads. Light beams reflected from each of the two or more sensor heads are combined by the fiber optic splitter. At least some of the combined light beams are received by the photodetector. By only using a single light source and a single photodetector with the two or more sensor heads, the ventricular support system may have improved portability.

A percutaneous circulatory support device includes a housing and an impeller disposed within the housing. The impeller is configured to rotate relative to the housing to cause blood to flow through the housing. A motor is operably coupled to the impeller, and the motor is configured to rotate the impeller relative to the housing. A catheter is coupled to the motor, and a pressure sensor is coupled to the catheter and disposed proximally relative to the housing.

The present disclosure provides catheter pump system including a catheter assembly configured to be at least partially inserted into a left ventricle (LV). The catheter assembly has a proximal end and a distal end, and includes an elongate body extending between the proximal end and the distal end. The catheter pump system further includes a pressure sensor disposed at the distal end and configured to measure a pressure within a left ventricle when the catheter assembly is inserted.

Systems, devices, and methods for improving wireless power transmission are disclosed herein. A method of powering an implantable ventricular assist device with an external charging device includes receiving a signal indicative of a change in a property of a deformable coil of the resonant circuit. A performance property of the deformable coil is determined based on the signal. An adjustment to a tuning of the resonant circuit is identified based on the performance property of the deformable coil. The resonant circuit is tuned according to the adjustment to the tuning of the resonant circuit. The resonant circuit is driven to transmit power to a secondary coil electrically coupled with the implantable ventricular assist device to power the ventricular assist device.

Systems, devices, and methods for improving wireless power transmission are disclosed herein. A method of powering an implantable ventricular assist device with an external charging device includes receiving a signal indicative of a change in a property of a deformable coil of the resonant circuit. A performance property of the deformable coil is determined based on the signal. An adjustment to a tuning of the resonant circuit is identified based on the performance property of the deformable coil. The resonant circuit is tuned according to the adjustment to the tuning of the resonant circuit. The resonant circuit is driven to transmit power to a secondary coil electrically coupled with the implantable ventricular assist device to power the ventricular assist device.