Bone rongeur for operation

Abstract

A bone rongeur for an operation comprises a clamping rongeur head formed by hinging an upper rongeur head body and a lower rongeur head body and a holding handle formed by hinging an upper rongeur handle and a lower rongeur handle. The tail end of a force arm section on the tail portion of the upper rongeur head body is hinged to the front end of the upper rongeur handle through a rotary shaft, a force arm section on the tail portion of the lower rongeur head body is longer than the force arm section on the tail portion of the upper rongeur head body and extends freely to the tail end, the force arm section on the tail portion of the lower rongeur head body is provided with a rack formed through a plurality of teeth in the extending direction, the front end of the lower rongeur handle is provided with a transmission gear, and the transmission gear is in meshed contact with the rack on the force arm section of the lower rongeur head body. Due to the fact that the transmission gear moves along the rack to the extending end of the force arm section of the lower rongeur head body, so that torque of the force arm section of the lower rongeur head body is increased, and the clamping force between the clamping face of the mouth portion of the lower rongeur head body and the clamping face of the mouth portion of the upper rongeur head body is increased. According to the bone rongeur, an operator can save labor when holding the bone rongeur, the situations that hands and upper limbs of the operator are fatigued and the hands tremble due to overexertion are effectively prevented, accidental injury accidents are prevented, and safety of the fine operation is guaranteed.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a rongeur for surgery. Background technique [0002] The rongeur is a surgical instrument commonly used in neurosurgery and orthopedics. There are mainly two types of existing rongeurs. One type is that the two parts of the rongeur are hinged through a hinge point. The smaller the distance between the palms, the more difficult it is to exert force on the palm, and the strength will also decrease, resulting in an unstable bite and difficulty in biting off the bone. The other type is that the rongeur head is composed of two hinged parts, and the handle is composed of two hinged parts. The force arms at the tail of the two parts of the pliers are respectively hinged with the front ends of the handles of the two parts, forming a joint through four hinge points. The planar mechanism constitutes a double-joint rongeur. This type of pliers is less labor-intensive than the previous type when ap...

AI Technical Summary

Problems solved by technology

There are mainly two types of existing rongeurs. One type is that the two parts of the rongeur are hinged through a hinge point. The smaller the distance between the palms, the more difficult it is to exert force on the palm, and the strength will also decrease, resulting in an unstable bite and difficulty in biting off the bone

The other type is that the rongeur head is composed of two hinged parts, and the handle is composed of two hinged parts. The force arms at the tail of the two parts of the pliers are respectively hinged with the front ends of the handles of the two parts, forming a joint through four hinge points. The planar mechanism constitutes a double-joint rongeur. This type of pliers is less labor-intensive than the previous type when applying force, but due to the restriction of the four closed hinge points of the planar mechanism, the length of the force arm at the tail of the two pliers heads is the same and shorter , the occlusal strength is limited, and it is still laborious to remove thicker bone fragments during surgery, such as thickened occipital bones, parietal bones, frontal bones, spinous processes, and lamina. The patient's hands and upper limbs are fatigued by long-term hard work, and hand tremors occur.

This phenomenon has a great impact on neurosurgery microsurgery, seriously affecting the accuracy and fineness of the operation, and even accidents that cause damage to brain tissue, spinal cord tissue and blood vessels due to improper or excessive force, affecting the surgical effect

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