Foldable and extendable minimally invasive operating forceps having bistable state performance

Abstract

The invention relates to the technical field of medical minimally invasive equipment, in particular to foldable and extendable minimally invasive operating forceps having the bistable state performance. The foldable minimally invasive operating forceps comprise a clamping body unit, and further comprise a handle unit, a forceps end unit and a traction fiber unit; the handle unit supports the clamping body unit and guides the deformation of the clamping body; the forceps end unit provides a parallel clamping surface for the operating forceps; the traction fiber unit comprises the two parts of a clamping control line and a relaxing control line. The foldable and extendable minimally invasive operating forceps can achieve the bistable state performance during clamping and extending, compared with traditional operating forceps, the operating forceps do not need to overcome the friction force of a traditional hinge, and accordingly the force wastage is reduced, and the mechanical advantage is improved.

Description

technical field [0001] The invention relates to the technical field of medical minimally invasive instruments, in particular to a foldable minimally invasive surgical forceps with bistable performance. Background technique [0002] Minimally invasive surgery is a diagnosis and treatment operation performed through minimally invasive instruments and modern digital diagnosis and treatment equipment. Compared with traditional surgery, interventional treatment has the advantages of less bleeding, less trauma, fewer complications, safety and reliability, and faster postoperative recovery. Minimally invasive surgery is being adopted by more and more doctors and patients. Surgical forceps is a very important type of clamping tool in minimally invasive surgery. The operator mainly realizes operations such as grasping, separating, shifting, and pulling the tissue through the surgical forceps. The surgical forceps enters the human body in a closed state through the instrument channel....

AI Technical Summary

Problems solved by technology

[0003] However, the traditional surgical forceps adopts a micro-mechanical structure composed of rigid components connected by kinematic pairs. Due to the limitation of small incisions on the body surface, problems such as processing and assembly of surgical forceps parts, friction, wear, and clearance caused by kinematic pairs are caused. These problems lead to low mechanical benefit, poor precision, shortened lifespan, and increased cost of surgical forceps. In addition, it is still difficult to obtain surgical forceps that meet the requirements in diameter and clamping force in minimally invasive operations with smaller body surface diameters.

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