A suspension arm structure

Abstract

The invention discloses a suspension arm structure, comprising a support portion, an upper arm portion, a lower arm portion, a wrist portion, an end connecting portion, a gas spring, a first connecting portion, a second connecting portion and a third connecting portion. The lower end of the support portion is fixed to a main body; the upper end of the support portion is hinged with the front end of the upper arm portion; the first connecting portion is separately hinged with the rear end of the upper arm portion and the front end of the lower arm portion; the front end of the wrist portion ishinged to the rear end of the lower arm portion via the second connecting portion; both ends of the third connecting portion are respectively hinged with the rear end of the wrist portion and the front end of the end connecting portion; the rear end of the end connecting portion is for connecting an irradiator; the gas spring is disposed inside the lower arm portion; and a push rod of the gas spring and a cylinder tube are respectively hinged with the first connecting portion and the lower arm portion. The suspension arm structure provided by the invention can realize the arbitrarily changingof spatial position, direction and angle of the irradiator, and does not require an additional locking mechanism while avoiding cable entanglement.

Description

technical field [0001] The invention relates to the technical field of medical instruments, and more specifically, to a suspension arm structure. Background technique [0002] In recent years, photodynamic therapy (PDT) has been widely used in the treatment of skin diseases, medical cosmetology and other indications. As the key equipment for photodynamic therapy, the photodynamic therapy device mainly includes a host and an irradiator for irradiating the patient's treatment area. The two are mechanically and electrically connected through the suspension arm. Irradiator support, fixation and adjustment of spatial position, angle and direction. [0003] However, the suspension arm of the prior art has the following problems: firstly, the suspension arm has fewer movable joints, so that the position, angle and direction of the irradiator connected to it cannot be adjusted arbitrarily in space, making it difficult to meet different treatment requirements for patients. area and...

AI Technical Summary

Problems solved by technology

[0003] However, the suspension arm of the prior art has the following problems: firstly, the suspension arm has fewer movable joints, so that the position, angle and direction of the irradiator connected to it cannot be adjusted arbitrarily in space, making it difficult to meet different treatment requirements for patients. area and the need for different treatment postures; secondly, a locking and releasing mechanism is required at the joints. When it is necessary to adjust the spatial position, angle and direction of the irradiator, the locking mechanism on the movable joint of the suspension arm must be released first, and the irradiation After the irradiator is adjusted to the required position, angle and direction, the movable joint of the suspension arm is locked. This structure makes the treatment operation process extremely inconvenient; finally, the electrical cables or pipelines connecting the main unit and the irradiator are It is erected by setting hooks or rings on the outside of the suspension arm. This structure is not only unsightly, but if it is not erected properly, it is easy to cause electrical cables or pipelines to be stuck or torn off during the adjustment of the movable joints of the suspension arm. , causing medical accidents

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