Abstract: The present invention provides systems and devices for ablation with bendable electrodes, including the system console of ablation energy, pacing and ECG unit as well as ablation catheter. The ablation energy is radio frequency (RF) or voltage pulse. The ablation catheter is connected to the system console of the ablation energy through a converter, and the ablation energy is transmitted to the ablation tissue through electrodes on the ablation catheter, leading to degeneration of tissue cells. The ablation catheter includes an elastically retractable spline basket made up of a plurality of extendable splines, each spline has at least one electrode attached on the surface. The bendable electrodes have good adaptability, and can automatically fit to configuration of different ablation tissue, thus overcoming the nondeformable issue of long traditional ring-shaped electrode, thereby achieving a better ablation effect.

Abstract: The purpose of this invention is to provide pulsed field ablation (PFA)-based systems and devices for treating arrhythmia, which includes a pulsed voltage console, a pacing and ECG unit, and an ablation catheter. The pulsed voltage console is comprised of an electric pulse generator, a controller, a user interface(UI), and a converter. The pacing and ECG unit is comprised of an ECG recorder, a pacing catheter, a cardiac stimulator, and a mapping catheter. The pacing electric signal is transmitted to the pulsed voltage console. Voltage pulse delivery is synchronized to join pacing signal. Based on the pacing signal, a voltage pulse waveform is delivered during the refractory period of the cardiac cycle. The ablation catheter is connected to the system console through a converter, transferring the electric field energy to the tissue through electrodes on the ablation catheter. The ablation catheter includes a spline basket.

Abstract: An electrophysiology catheter (100) includes a catheter distal portion (110) on which a force sensor (200) is arranged. The force sensor (200) includes an elastic tube (210) and strain gauges (220). The elastic tube (210) has a hollow portion in its wall, and the strain gauges (220) are disposed external to the hollow portion. Compared to the design with the strain gauges (220) overlapping the hollow portion, arranging them over solid portions of the elastic tube (210) allows the strain gauges (220) to collect more accurate electrical signals while suffering from less interference. This can result in a significant improvement in contact force measurement accuracy of the catheter distal portion (110).

Abstract: An electrophysiology catheter (100) includes a catheter distal portion (110) on which a force sensor (200) is arranged. The force sensor (200) includes an elastic tube (210) and strain gauges (220). The elastic tube (210) has a hollow portion in its wall, and the strain gauges (220) are disposed external to the hollow portion. Compared to the design with the strain gauges (220) overlapping the hollow portion, arranging them over solid portions of the elastic tube (210) allows the strain gauges (220) to collect more accurate electrical signals while suffering from less interference. This can result in a significant improvement in contact force measurement accuracy of the catheter distal portion (110).

Abstract: A polyisobutylene polyurethane (PIBU) copolymer comprising a polyisobutylene (PIB) having a molecular weight of about 400 to about 5,000 daltons; a hard segment (PU) formed from reacting the PIB with diisocyanates and from reacting one of the diisocyanate linked to the PIB with a chain extender. The chain extender has a length based on a number of carbon atoms in the chain extender. A shore hardness of the PIBU copolymer is determined, in part, by either one or more of a PIB:PU ratio, the length of PIB, the type of diisocyanate, and the type and length of the chain extender.

Abstract: A method of treating a heart condition includes dispensing first and second sealant components to a myocardial infarction via an introducer extending through a percutaneous puncture in a subxiphoid region. The first and second sealant components combine to form a medical sealant material that bonds to the myocardial infarction to form a reinforcement for the myocardial infarction, wherein the reinforcement does not include a patch.

Abstract: An implantable medical device includes a device body at least partially formed of a polymeric material including a base polymer and a block copolymer. The block copolymer includes at least one polyethylene oxide (PEO) block and at least one polyisobutylene (PIB) block. The PEO and PIB blocks may be coupled together by a urethane or urea linkage. The block copolymer may be a triblock copolymer, PEO-PIB-PEO, and the base polymer may be a polystyrene-polyisobutylene-polystyrene triblock copolymer.

Abstract: An implantable medical device includes a device body at least partially formed of a polymeric material including a base polymer and a block copolymer. The block copolymer includes at least one polyethylene oxide (PEO) block and at least one silicone (SI) block, wherein the weight average molecular weight of the block copolymer is in the range of about 400 to about 50,000.

Abstract: An implantable medical device includes a device body at least partially formed of a polymeric material including a base polymer and a block copolymer. The block copolymer includes at least one polyethylene oxide (PEO) segment and at least one silicone (SI) segment, wherein the weight average molecular weight of the block copolymer is in the range of about 400 to about 50,000.