7 results about "Endovascular interventions" patented technology

Systems and techniques are disclosed for improving real-time tissue characterizations during endovascular procedures. In some implementations, a method involves characterizing biological tissue for an endoluminal procedure. A first electrode is positioned within an endoluminal space adjacent to a region of biological tissue. A second electrode is positioned spatially separated from the first electrode. A variable-frequency input electrical signal is applied across the first electrode and the second electrode to generate an electrical field corresponding to the region. A voltage response is measured between the first electrode and the second electrode based on the electric field. A voltage phasor is determined based on the voltage response relative to the variable-frequency input electrical signal. A characteristic of the region is determined based on the voltage phasor.

The invention discloses a non-craniotomy implanted double-coil targeted brain stimulation device and method, and belongs to the technical field of nerve regulation and control, and the device comprises magnetoelectric particles which are used for generating local current stimulation to a target brain region under the action of an alternating magnetic field; the non-craniotomy implantation assembly is used for conveying the magnetoelectric particles to a target brain area through an endovascular intervention path or a nasal cavity-brain path; the focusing magnetic stimulation device is used for generating an external magnetic field excitation source and providing an alternating magnetic field for the magnetoelectric particles; the image navigation and positioning module is used for positioning the focusing center of the alternating magnetic field to the center of a target brain region, and the focusing center corresponds to the position where the magnetoelectric particles are conveyed; and the magnetic stimulation control module is used for adjusting stimulation parameters of the focusing magnetic stimulation device so as to regulate and control the alternating magnetic field to generate local induction current stimulation in the target brain area through the magnetoelectric particles. The method is used for brain stimulation based on the device. The problem that it is difficult to accurately stimulate the deep brain area without craniotomy is solved.

The disclosed apparatus, systems and methods relate to interventional magnetic resonance imaging (iMRI). More specifically, clinical applications of the disclosed include magnetic resonance (MR) guided procedures such as endovascular interventions, percutaneous biopsies or deep brain stimulation

The invention provides a sheathing canal assembly for endovascular interventional therapy and an endovascular interventional therapy device.The sheathing canal assembly comprises a dilator, a sheathing canal and a plurality of drug sustained-release assemblies, the dilator is provided with an expandable part capable of expanding or contracting in the radial direction, the sheathing canal is arranged on the dilator in a sleeving mode and provided with an openable part with a closed state and an open state, and the drug sustained-release assemblies are arranged on the expandable part. The openable and closable part comprises a plurality of flaps arranged in the circumferential direction, when the openable and closable part is in a closed state, the flaps define a tubular structure, when the openable and closable part is in an open state, the flaps form a radial structure, and the multiple drug sustained release assemblies can be embedded between every two adjacent flaps in a split mode. The sheathing canal assembly is configured in the mode that when the expandable part is converted from the radial contraction state to the radial expansion state, the openable part is converted from the closed state to the open state, and the medicine slow release assembly is gradually separated from the flaps and moves in the direction away from the axis of the sheathing canal. According to the invention, the loss of the medicine in the conveying process can be reduced, and the accuracy and safety of treatment are improved.

The present invention relates to a training apparatus (1) for an endovascular intervention on a patient. The training apparatus (1) comprises: a simulation block (5), which is made of a material having a first refractive index (m) and comprises at least one internal cavity (11) configured to simulate a blood vessel of said patient, a supply apparatus (6) adapted to supply at least one of a first fluid (Fi) having a second refractive index (m) and / or a second fluid (F2) inside said internal cavity (11), said second fluid (F2) having a third refractive index (ns), a light radiation source (8) in such a way as to emit light radiation towards said simulation block (5), image acquisition means (9) configured to acquire images of at least the simulation block (5) and image display and recording means (10) configured to display the images acquired by the image acquisition means (9).

Systems and techniques are disclosed for improving real-time tissue characterizations during endovascular procedures. In some implementations, a method involves characterizing biological tissue for an endoluminal procedure. A first electrode is positioned within an endoluminal space adjacent to a region of biological tissue. A second electrode is positioned spatially separated from the first electrode. A variable-frequency input electrical signal is applied across the first electrode and the second electrode to generate an electrical field corresponding to the region. A voltage response is measured between the first electrode and the second electrode based on the electric field. A voltage phasor is determined based on the voltage response relative to the variable-frequency input electrical signal. A characteristic of the region is determined based on the voltage phasor.