12 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 application provides an operating handle mechanism for a vascular endovascular intervention robot, which comprises a base, a clamping mechanism, a rotating mechanism and a forward and backward mechanism. The clamping mechanism is installed on the base, has a clamping state and a non-clamping state and can guide the action switching of the matching clamping and non-clamping of the surgical robot. The rotating mechanism is installed on the clamping mechanism, and the rotating signal collected when the rotating mechanism is operated can guide the matching rotating action of the surgical robot. The forward and backward mechanism follows the clamping mechanism and can transmit the obtained forward and backward signals to guide the matching action of the surgical robot. The resistance signal in the forward or backward movement of the surgical robot is received and matched with the damping action on the forward and backward mechanism. The application does not change the user's operation habit of the guide wire catheter, completely imitates the action of the hand clamping, twisting and advancing and retreating the guide wire catheter, realizes the infinite advancing and retreating of the guide wire catheter in operation, and can effectively avoid the misoperation caused by the original habit.

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 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 application provides an aortic stent releasing device for a vascular endovascular intervention robot, which comprises a driving mechanism, a control mechanism and an aortic stent, wherein the aortic stent comprises a stent base and a releasing handle; the stent base has a mounting end and a driving end; a self-expanding stent is sleeved on the mounting end, and a tightening sleeve is sleeved outside the self-expanding stent; the releasing handle is sleeved on the first position of the driving end; the driving mechanism can drive the releasing handle to move towards the second position of the driving end, so that the tightening sleeve is separated from the self-expanding stent, the self-expanding stent is self-expanded, and the mounting end is separated from the self-expanding stent when the stent base moves away from the self-expanding stent; and the control mechanism is signal-connected with the driving mechanism. The aortic stent releasing device uses a power device to replace human hands to complete stent releasing, reduces the operation risk caused by human factors, is simple to operate, stable and reliable, and has high practicability.

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.