14 results about "Basket catheter" patented technology

An apparatus for manufacturing an end effector for a basket catheter assembly includes a support platform and a force application mechanism. The support platform is configured to support an expandable basket formed of curved splines with shape retention. Guidelines pass through longitudinal channels of respective flexible sleeves and are connected to the free end of respective splines. The force application mechanism controllably applies and releases a tensile force on the second end of the guidelines. Pulling on a guideline applies a tensile force to the free end of the spline, thereby flattening it. This enables sliding the flattened spline through the longitudinal channel of the flexible sleeve. The spline reverts to a curved shape when the tensile force is released.

The application relates to the technical field of basket catheter, in particular to a basket catheter system and a basket catheter calibration method. The basket catheter system comprises a basket catheter, an operating handle, a tube body and a basket electrode assembly, the basket electrode assembly comprises a spline, a proximal end fixing seat and a distal end fixing seat, and the basket catheter system further comprises a proximal end position sensor and a distal end position sensor arranged on the proximal end fixing seat and the distal end fixing seat respectively; the basket catheter system further comprises a processing device, the proximal end position sensor and the distal end position sensor are connected with the basket catheter, and the processing device is used for obtaining a contact force of the basket electrode assembly and target tissue according to a proximal-distal end spacing change amount, a corresponding relationship between a known axial force value of the basket electrode assembly and the proximal-distal end spacing change amount and a contact angle of the basket electrode assembly and the target tissue. The application mainly solves the technical problem of how to detect the contact force of the basket catheter and the target tissue.

This application provides a basket catheter, which includes flexible circuit strips, an elastic support, basket electrodes, and a core rod. The flexible circuit strips are respectively arranged on the inner and outer surfaces of the elastic support, and multiple basket electrodes are disposed on the flexible circuit strips. The basket electrodes can be switched between a contracted state and an expanded state by operating the core rod. The basket electrodes on the inner surface of the elastic support are configured not to contact tissue. Accurate localization of key conduction areas through high-density sampling within the cardiac chambers allows for a clearer elucidation of the arrhythmia matrix, thereby providing better mapping and / or ablation results.

A medical probe is presented including an expandable basket assembly coupled to a distal end of a tubular shaft. The basket assembly includes a cloverleaf cutout structure at its distal end and spines extending proximally from the cloverleaf structure and coupling to the tubular shaft. The cloverleaf structure includes a sinusoidal-like member extending from one spine to an adjacent spine in a direction around the longitudinal axis. Dimensions of the sinusoidal-like member can be configured to provide a lateral stiffness of the expandable basket assembly within a predetermined range and a maximum peak stress during retraction of the expandable basket assembly into an intermediate catheter such that the maximum peak stress is less than a predetermined threshold.

In one embodiment, a catheter apparatus is configured to be inserted into a body part of a living subject, and including an elongated deflectable element including a distal end, an expandable basket assembly disposed at the distal end and comprising a plurality of splines and a plurality of electrodes disposed on the splines, an irrigation channel disposed in the elongated deflectable element, and an inflatable balloon disposed in the expandable basket assembly and including a plurality of irrigation holes in fluid connection with the irrigation channel.

A medical apparatus includes a shaft and a basket assembly. The shaft is configured for insertion into a cavity of an organ of a patient. The basket assembly is connected distally to the shaft and includes electrodes, which are configured to apply electrical energy to tissue within the cavity. The basket assembly further includes a flexible porous sheath, which is fitted over the basket assembly and is configured to contact the tissue within the cavity while simultaneously (i) preventing the electrodes from indenting the tissue and (ii) allowing electrical energy applied from the electrodes to be delivered to the tissue.

A medical probe is presented including an expandable basket assembly coupled to a distal end of a tubular shaft. The basket assembly includes a cloverleaf cutout structure at its distal end and spines extending proximally from the cloverleaf structure and coupling to the tubular shaft. The cloverleaf structure includes a sinusoidal-like member extending from one spine to an adjacent spine in a direction around the longitudinal axis. Dimensions of the sinusoidal-like member can be configured to provide a lateral stiffness of the expandable basket assembly within a predetermined range and a maximum peak stress during retraction of the expandable basket assembly into an intermediate catheter such that the maximum peak stress is less than a predetermined threshold.

This application provides a basket catheter, which includes flexible circuit strips, an elastic support, basket electrodes, and a core rod. The flexible circuit strips are respectively arranged on the inner and outer surfaces of the elastic support, and multiple basket electrodes are disposed on the flexible circuit strips. The basket electrodes can be switched between a contracted state and an expanded state by operating the core rod. The basket electrodes on the inner surface of the elastic support are configured not to contact tissue. Accurate localization of key conduction areas through high-density sampling within the cardiac chambers allows for a clearer elucidation of the arrhythmia matrix, thereby providing better mapping and / or ablation results.

This invention is entitled "Basket Catheter with Improved Sealing". The invention discloses a system and method for providing and using a flushing ablation catheter. The catheter includes a distal electrode assembly having multiple ridges forming a basket-shaped electrode assembly in communication with a system controller. The catheter also includes a traction wire disposed within the lumen of a ridge liner. The ridge liner also includes a silicone sealant for preventing flushing fluid and other bodily fluids from entering the lumen of the traction wire.

This application relates to the field of electrophysiological catheter technology, specifically to a basket electrode assembly and a basket-shaped catheter. The basket electrode assembly includes: a spline, which is a bent structure in its free state to allow the basket electrode assembly to expand in its free state; a proximal fixation seat, fixedly connected to the proximal ends of each spline; a distal fixation seat, fixedly connected to the distal ends of each spline; and a lead wire, the distal end of which is connected to the distal fixation seat and passes through the proximal fixation seat. The lead wire includes an elastic telescopic section, at least a portion of which is located between the proximal and distal fixation seats. The elastic telescopic section is used to change its size along the proximal-distal direction of the basket electrode assembly as the position of the distal fixation seat changes. This application mainly solves the problem that setting a lead wire on the spline of a basket-shaped catheter leads to increased processing difficulty of the spline.

To provide a medical probe.SOLUTION: Embodiments of the present invention include a medical probe having an insertion tube, a basket assembly, an axial electrode, and a plurality of radial electrodes. The insertion tube is configured for insertion into a body cavity of a patient. The basket assembly has a proximal end that is connected distally to the insertion tube and includes a plurality of resilient spines, which are configured to bow radially outward from an axis of the basket assembly and are conjoined at a distal end of the basket assembly. The axial electrode is disposed at the distal end of the basket assembly, having a diameter of at least 1.5 millimeters, and is configured to contact tissue in the body cavity. The radial electrodes are configured to contact the tissue in the body cavity and include radial electrodes disposed on the spines.SELECTED DRAWING: Figure 1

The disclosed technology includes basket catheters comprising a generally cylindrical structure having electrodes attached thereto. The disclosed technology can include a structural unit for an end effector comprising a proximal member extending along a longitudinal axis. The proximal member can define a plurality of divergent curvilinear members. Each divergent curvilinear member can define two meander members extending along the longitudinal axis such that the structural unit comprises a plurality of meander members. Each of the plurality of meander members can be connected to a respective convergent curvilinear member of a plurality of convergent curvilinear members. The structural unit can further comprise a distal member connected to the plurality of convergent curvilinear members.

A catheter configured to be used in a medical procedure includes a shaft and electrically conductive splines. The splines can include an insulated portion and a non-insulated portion configured to electrically ablate tissue. The catheter can include one or more electrodes coupled to insulated portion(s) of the splines and configured to sense electrical signals in the tissue. The splines can be coupled to an apex, forming an expandable distal-end assembly. The catheter can include a bump stop coupled to the apex and configured to maintain a minimal distance between the apex and the distal tip of the shaft. An ablation system can include the catheter, a generator, and a processor configured to control ablation energy from the generator to the splines such that ablation energy is applied to a first spline without applying ablation energy to a second spline.