Direction-controllable puncture sheath

Abstract

The invention relates to an occluder delivering device with the adjustable head bending angle in the field of minimally invasive operation medical instruments, in particular to a direction-controllable puncture sheath. The direction-controllable puncture sheath comprises a tube and a puncture core; the puncture core comprises a guide head, a guide tube, an elastic connector and a traction line; the guide head is connected to the guide tube through the elastic connector and is fixedly connected to the traction line, the traction line is connected to an operation handle of the far end and is pulled through the operation handle so as to steer the guide head corresponding to the guide tube, and the puncture core drives the tube to steer. The traction line is fixed to the guide head and is connected to the operation handle, according to the technical scheme of allowing the operation handle to pull the traction line to force the guide head to steer, and the defects that when an puncture sheath is used during an operation currently, a guide track for allowing the guide line required by a human body to penetrate is established, the positioning effect of the guide line is poor, the puncture difficulty is increased, operation is complex, operation time is prolonged and pain of a patient is increased are overcome.

Description

technical field [0001] The invention relates to an occluder delivery device capable of adjusting the bending angle of the head end in the field of minimally invasive surgery medical instruments, which is suitable for transthoracic occlusion surgery of congenital heart disease, and particularly relates to a controllable puncture sheath. Background technique [0002] There are already 2 million cases of congenital heart disease requiring surgical treatment in my country, and about 100,000 new cases are added every year. A considerable number of children can be treated with transthoracic minimally invasive closure to avoid extracorporeal circulation required for surgery, thereby The damage to the body of the child is reduced, the surgical incision is reduced, and the hospital stay is shortened. Transthoracic minimally invasive occlusion surgery requires the use of a puncture sheath to establish a channel between the patient's intracardiac septal defect and the operator, deliver ...

AI Technical Summary

Problems solved by technology

However, due to the different locations and planes of cardiac septal defects, as well as the beating of the heart and the influence of blood flow in the cardiac cavity, clinically it often takes multiple attempts to successfully pass the guide wire through the defect to guide the placement of the puncture sheath. Especially in the minimally invasive closure treatment of patent ductus arteriosus and ventricular septal defect, which prolongs the operation time, may cause or aggravate damage to the tissue structure in the heart, and increase the incidence of complications

Moreover, the currently used puncture sheath is straight, and the bending angle cannot be adjusted.

Sometimes, although the occluder can reach the designated position in the heart, due to the release angle of the occluder, it cannot close the intracardiac septal defect at the best position and angle, which affects the effect of treatment

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