Bending-adjustable sheathed catheter and delivery system employing same

Abstract

The invention discloses a bending-adjustable sheathed catheter and a delivery system employing the same. The bending-adjustable sheathed catheter comprises a catheter body with a far end and a near end. A drawing wire is connected to the wall of the catheter body. One end of the drawing wire extends to the near end of the catheter body. The joint of the other end of the drawing wire and the catheter body is adjacent to the far end of the catheter body. At a position adjacent to the far end of the catheter body, at least one section of the drawing wire is exposed outside the catheter body. Since one section of the drawing wire in the bending-adjustable sheathed catheter is exposed outside the catheter body of the sheathed catheter, a posture convenient for force application during drawing is achieved; the point of strength can be changed in a self-adaptive manner through movement relative to the catheter body; under the condition that the turning radius is large or introducers are long,hard and less prone to bent, safety and flexibility in operation are improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a bend-adjustable sheath and a delivery system using the bend-adjustable sheath. Background technique [0002] Interventional surgery causes little trauma to the human body and is less invasive. It is a medical technology that has been rapidly emerging and promoted in recent years. A channel is established between the lesion site and the external operation terminal to introduce diagnostic and treatment instruments, drugs, interventional instruments, etc. to the lesion site. The interventional diagnosis and treatment sheath has a distal end and a proximal end. The distal end can enter the vascular system of the human body, and the proximal end is connected to the operating handle. Other auxiliary instruments are punctured into the blood vessel, and the physician controls the distal end of the sheath along the pre-established guide wire track to the lesion to r...

AI Technical Summary

Problems solved by technology

[0008] Even if the pull wire is used in the prior art, especially the pull wire is threaded and bound in the pipeline or channel as a whole, so the interventional instrument that needs to be greatly adjusted or the distal end of the sheath is relatively long, In hard conditions, it is difficult to meet the needs of bending adjustment, and because the bending adjustment is limited by the magnitude of the torque and the deformation of the surrounding parts where the pulling wire is located, the operation is more laborious

Images