Intravascular ultrasound retraction device and system

Abstract

The present application relates to an intravascular ultrasound retraction device and system. Among them, the intravascular ultrasonic retraction device is used to retract the catheter in the blood vessel, including a base, a power source assembly and a transmission assembly, the power source assembly and the transmission assembly are assembled on the base, and the power source assembly is used for the transmission The assembly provides power; the transmission assembly includes a first transmission part, a second transmission part and a clutch mechanism; the first transmission part is connected to the power source assembly, the clutch mechanism is connected between the first transmission part and the second transmission part, and the second transmission part It is used to drive the catheter to perform a retraction movement; the clutch mechanism includes a first sleeve, a second sleeve and an operating part; and the contact surface of the first sleeve and the second sleeve includes a slope; the operating part is used to control the first The sleeve and the second sleeve rotate relative to each other, so that the first sleeve and the second sleeve are aligned or staggered, so that the transmission connection or transmission disconnection between the first transmission part and the second transmission part is achieved. Able to switch smoothly between manual and automatic.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to an intravascular ultrasonic retraction device and system. Background technique [0002] The intravascular ultrasound retraction device can play the role of catheter push-pull movement, thereby meeting the necessary requirements of the intravascular ultrasound retraction device for axial imaging of blood vessels. In clinical application, the intravascular ultrasound retraction device needs to be able to switch between manual mode and automatic mode. [0003] In the current products on the market, the manual and automatic switching of the intravascular ultrasonic retraction device is realized through an electromagnetic clutch or a mechanical clutch together with an unlocking mechanism. [0004] Mechanical clutches include jaw toothing or bevel toothing. The unlocking mechanism has a multi-link mechanism, which uses a fork to directly separate the mechanical clut...

AI Technical Summary

Problems solved by technology

[0005] The multi-link mechanism has high requirements for manufacturing, and it is prone to jamming during assembly, making debugging difficult and inefficient

[0006] The swing rod drives the mechanical clutch rotor to rotate and separate. The structure is simple, the number of parts is small, and the assembly is simple, but its unilateral guide is likely to cause the clutch disengagement and meshing movement to be unstable, or cause the movement transmission of the entire intravascular ultrasonic retraction device to be unstable. , and the resistance is relatively large, and the user experience is not high

[0007] Although the electromagnetic clutch is easy to assemble, it requires circuit control, which increases the cost of circuit design, and is prone to heat, which affects the use of the product

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