13 results about "Rotational atherectomy" patented technology

Some embodiments of a rotational atherectomy and lithotripsy system can partially or completely remove a stenotic lesion in blood vessels by rotating one or more abrasive elements to abrade and breakdown the lesion, by emitting acoustic energy to fracture and breakdown the lesion, or a combination of both.

Some embodiments of a rotational atherectomy device can remove (partially or completely) stenotic lesions in blood vessels by rotating one or more abrasive elements in an orbital path to abrade and breakdown the lesion. In particular implementations, multiple abrasive elements are arranged along a distal portion of a drive shaft with an improved configuration so as to facilitate both efficient navigation into vessels extending from the abdominal aorta such as the common iliac artery, the external iliac artery, the internal iliac artery, the profunda artery, the gluteal artery, and the pudental artery and effective orbital paths for abrading stenotic material in such vessels and junctions between such vessels.

The present disclosure provides systems and methods for Al model(s) that are trained to identify characteristics associated with lesions within a blood vessel and provide a suggested procedure associated with the lesion. The Al model may receive, as input, intravascular and / or extraluminal image data associated with the blood vessel and provide, as output, characteristics, e.g., characterizations, associated with the blood vessel. The characterizations may include, for example, form or tissue nature (e.g., microcalcification, punctate, fragment, sheet, nodular, or otherwise), location within the vessel (e.g., intimal, superficial, medial, deep, etc.), size (e.g., length, depth, thickness, etc.), severity, and / or the like. The characterizations may be used as input to the same and / or a different model for providing a suggested procedure associated with the lesion. The suggested procedure may include, for example, orbital atherectomy, intravascular lithotripsy, rotational atherectomy, cutting and / or scoring balloons, and / or the like.

Some embodiments of a rotational atherectomy device can remove (partially or completely) stenotic lesions in blood vessels by rotating one or more abrasive elements in an orbital path to abrade and breakdown the lesion. In particular implementations, multiple abrasive elements are arranged along a distal portion of a drive shaft with an improved configuration so as to facilitate both efficient navigation into smaller blood vessels below the ankle or in the heart and effective orbital paths for abrading stenotic material in such smaller vessels.

Some embodiments of a rotational atherectomy device can remove (partially or completely) stenotic lesions in blood vessels by rotating one or more abrasive elements in an orbital path to abrade and breakdown the lesion. In particular implementations, multiple abrasive elements are arranged along a distal portion of a drive shaft with an improved configuration so as to facilitate both efficient navigation into vessels extending from the abdominal aorta such as the common iliac artery, the external iliac artery, the internal iliac artery, the profunda artery, the gluteal artery, and the pudental artery and effective orbital paths for abrading stenotic material in such vessels and junctions between such vessels.

The present disclosure relates to a rotational atherectomy device and a medical device including the rotational atherectomy device. The rotational atherectomy device includes a drive shaft and a rotational atherectomy component connected to the drive shaft. The rotational atherectomy component includes a base and a rotational atherectomy block. The rotational atherectomy block is relatively movably assembled on the base. When the rotational atherectomy component rotates, the rotational atherectomy block moves in a direction away from the base.

In a coronary artery rotational atherectomy intervention system provided in this application, a limit switch in a guide wire clamping system is connected to a limit switch state detection and transmission module. After the guide wire is clamped, the limit switch is triggered to be in a closed state and detected by the module. In a physiological saline infusion system, an infusion pump control element controls the infusion pump to start, and the pump is connected to an infusion pump state detection and transmission module to detect its started state. Before issuing an instruction for starting a drive motor, a controller module in the drive and control system confirms that the infusion pump is started and the limit switch is closed, to drive the rotational atherectomy head to rotate, thereby remarkably improving the apparatus's operational safety.

The present disclosure relates to a rotational atherectomy device and a medical device including the rotational atherectomy device. The rotational atherectomy device includes a drive shaft and a rotational atherectomy component connected to the drive shaft. The rotational atherectomy component includes a base and a rotational atherectomy block. The rotational atherectomy block is relatively movably assembled on the base. When the rotational atherectomy component rotates, the rotational atherectomy block moves in a direction away from the base.

The utility model relates to a blood vessel plaque rotary cutting system which comprises a rotary cutting guide wire, the rotary cutting guide wire comprises a guide wire body capable of rotating around the axis of the guide wire body, a rotary cutting component used for cutting away plaques, a protection component used for collecting the rotary cutting plaques and a limiting component, and the rotary cutting component, the protection component and the limiting component are arranged on the guide wire body. The protection component is located at the far end of the rotary cutting component and can move in the axial direction of the guide wire body, the limiting component comprises a far-end limiting component and a near-end limiting component which are used for limiting displacement of the protection component, and the near-end limiting component is the rotary cutting component. The protective component is movably arranged on the guide wire body, the guide wire body can drive the rotary cutting component to move axially and rotate circumferentially at the same time, different diseased regions can be polished, the axial moving distance is longer, the rotary cutting area is wider, and the treatment effect is better; and meanwhile, the rotary cutting part is used for limiting the protection part, so that the structure of the rotary cutting guide wire is more simplified.

The invention relates to the technical field of thrombus treatment, in particular to a radio frequency rotary cutting type thrombus removing method. According to the technical scheme, the radio frequency rotary-cut type thrombus removing method comprises the following steps of S1, multi-mode sensing and characteristic calculation, S2, self-adaptive radio frequency energy application, S3, intelligent matching rotary-cut and force feedback cooperation, S4, dynamic risk active protection, and S4, dynamic risk active protection through micro-impedance and temperature multi-mode sensing. Real-time, in-situ and quantitative calculation of thrombus components and fibrin density is achieved in an operation for the first time, blindness depending on two-dimensional images and empirical estimation is thoroughly changed, on the basis, the system can adaptively match optimal radio frequency energy parameters and mechanical rotary cutting parameters for thrombus with different properties like tailoring according to the body, and the system has the advantages of being simple in structure, convenient to operate and high in practicability. The method can be safely and effectively applied to wide thrombus types which are difficult to treat by a traditional technology, and clinical indications are remarkably broadened.

A forward shockwave device, comprising inner electrodes and an outer electrode, and wires connected to the electrodes. The electrodes are arranged to form spark gaps therebetween. In response to a high potential difference applied across the wires, an arc discharge is generated across the spark gaps, and shockwaves propagate forward in a distal direction from the spark gaps through a conductive fluid in the spark gaps. Also disclosed is a forward shockwave catheter comprising the forward shockwave device. The forward shockwave catheter comprising the forward shockwave device reduces, during surgeries for treating high-resistance lesions in human conduit systems such as blood vessels, the operation steps for change into rotational atherectomy due to the inability of conventional shockwave balloons to be in place, thereby simplifying surgical processes and improving the treatment efficiency.

Some embodiments of a rotational atherectomy and lithotripsy system can partially or completely remove a stenotic lesion in blood vessels by rotating one or more abrasive elements to abrade and breakdown the lesion, by emitting acoustic energy to fracture and breakdown the lesion, or a combination of both.

A calibration device for a coronary artery rotary grinding system comprises a supporting table, and a dynamic torquemeter, a radial air bearing, a material frame and a simulation material which are arranged on the supporting table, the dynamic torquemeter is connected with a material frame through a radial air bearing, a simulation material is installed on the material frame, an optical shaft is installed in the radial air bearing, one end of the optical shaft is connected with the material frame, the other end of the optical shaft is connected with the dynamic torquemeter through a first coupler, and a shaft in the middle of the dynamic torquemeter is connected with a torque stopper through a second coupler. The material rack is used for fixing simulation materials; the coronary artery rotary grinding system is arranged on the mounting platform, a flexible transmission shaft at the front end of the coronary artery rotary grinding system is supported by a rigid connecting pipe sleeve, and a cutter at the front end of the flexible transmission shaft extends into a hole of the simulation material to perform rotary grinding motion. According to the method, the rotary grinding force is calibrated in the actual working state of the rotary grinding cutter in the operation, and the method is used for accurately feeding back and guiding operation parameters.