Simple and convenient bendable catheter

Abstract

The invention provides a simple and convenient bendable catheter. The simple and convenient bendable catheter comprises a catheter body and a handle assembly. The catheter body comprises a bendable section arranged at the far end of the catheter body and a traction wire connected to the bendable section; the handle assembly comprises a handle shell, a sliding mechanism arranged in the handle shell in a sliding manner in the axial direction, a driving mechanism connected with the sliding mechanism, and a locking structure arranged between the handle shell and the driving mechanism; the sliding mechanism comprises a sliding piece connected to the near end of the traction wire; the driving mechanism comprises a transmission piece connected to the sliding piece and a driving piece connected with the transmission piece; rotation of the driving piece drives the transmission piece to rotate so as to drive the sliding piece to slide; and the locking structure elastically abuts against the driving piece and acts synchronously with the driving piece. When the driving piece rotates to any position and stops, the locking piece locks the driving piece immediately so as to keep the bending state of the bendable section.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a simple adjustable bend catheter. Background technique [0002] Percutaneous interventional technology has the advantages of less trauma, faster recovery, and fewer complications in the treatment of congenital heart diseases such as atrial septal defect, ventricular septal defect, and patent foramen ovale, as well as other cardiovascular diseases. As a necessary auxiliary device for percutaneous interventional surgery, the catheter mainly provides a channel for the guide wire. By adjusting the distal end of the catheter to point to the entrance of the target blood vessel, the guide wire is introduced into the target blood vessel. The adjustable curved catheter can bend the distal end of the catheter at different angles by manipulating the handle to adapt to different physiological and anatomical shapes. The adjustable bend catheters in the prior art all realize the ...

AI Technical Summary

Problems solved by technology

However, the handle of the existing adjustable bend catheter is usually equipped with a relatively complicated bend adjustment driving mechanism and locking mechanism, which not only causes the handle to be longer in length, larger in volume, and heavier in weight, which is not conducive to the doctor's long-term grip, but also makes the adjustment more difficult. Bending and locking generally require the cooperation of both hands, which is inconvenient to operate

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