Vertebra operation channel system

Abstract

The invention discloses a vertebra operation channel system. A left strutting arm comprises a left rear arm and a left front arm; the left rear arm movably sleeves a guide rail; a left semi-barrel ismounted on the left front arm; the front part of the left rear arm is screwed with a left hand wheel; the left front arm is provided with a left strip hole; a left guide rail is arranged on the innerwall of the left strip hole; the lower end of the left hand wheel is movably clamped with the left guide rail; when the left hand wheel rotationally ascends or descends, the lower end of the left handwheel moves along the left guide rail and drives the left front arm to rotate relative to the left rear arm, and similarly, the rotating principle of a right rear arm and a right front arm can be known; the barrel wall of the left semi-barrel is provided with a left reserving groove; and the barrel wall of a right semi-barrel is provided with a right reserving groove. The operation channel systemhas the advantages that the left strutting arm and a right strutting arm can be rotationally strutted without an additional non-return mechanism, so that the structure is simpler, and the cost is lowered; furthermore, the non-return stability of rotational strutting is high; during rotational strutting, the rotation angle can be finely adjusted continuously; and strip-shaped and rod-shaped operation instruments can be conveniently operated in an operation notch.

Description

Technical field [0001] The invention relates to the technical field of surgical instrument manufacturing, in particular to a spinal surgery channel system. Background technique [0002] The main function of the spine surgery channel system is to open the surgical approach incision to facilitate the entry of endophytes and the operation of surgical instruments. The channel system generally includes a spreading arm that can realize parallel expansion and rotation expansion, and parallel expansion can be parallel. The surgical approach incision is opened, and the rotating expansion can expand the operating space at the bottom of the incision. The expansion arm is equipped with two channel half-tubes that directly form the surgical channel and open and close with the expansion arm. [0003] The traditional channel system requires a non-reverse mechanism for the rotation expansion. The non-reverse mechanism generally uses a torsion spring to drive the pawl. The pawl cooperates with the ...

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Problems solved by technology

[0003] The traditional channel system needs to set up a non-return mechanism for the rotation and expansion. The non-return mechanism generally uses a torsion spring to drive the pawl. , this kind of non-return mechanism has the following problems: first, the existence of the non-return mechanism makes the structure of the channel system more complicated and increases the cost; The operation has an impact; secondly, it is impossible to realize the continuous fine-tuning of the rotation when the rotation is opened, because there is a certain distance between the multiple detents, and the cooperation between the pawl and the detents is discontinuous. Some strip-shaped and rod-shaped surgical instruments protruding into the surgical incision are obstructive and inconvenient to operate

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