Abstract
Proton heavy ion radiotherapy is widely used and currently represents the most advanced radiotherapy technology. However, at present, proton heavy ion radiotherapy chairs in fixed beam radiotherapy rooms do not have a head and neck positioning function. This paper presents a novel design for a proton heavy ion radiotherapy chair with a head and neck positioning device. The design of the posture adjustment mechanism and the head and neck positioning device of the treatment chair is based on U-TRIZ theory and ergonomics, respectively. A positive kinematic analysis of the posture adjusting mechanism was carried out, as well as a workspace analysis of the head and neck positioning device. Finally, positioning error experiment and ergonomic evaluation were performed on a prototype of the head and neck positioning device. The proposed design of the treatment chair satisfies the requirements for posture adjustment and achieves the head and neck positioning function. The experimental results also provide a basis for further optimization of the design.
Highlights
Proton heavy ion radiotherapy is a new type of radiotherapy that has stoked international interest in recent years and represents the most advanced radiotherapy technique and is the future trend for radiotherapy treatments for cancers [1]
This paper presents the design of a proton heavy ion radiotherapy chair with a head and neck positioning function
This paper presented the design of a proton heavy ion radiotherapy chair with a head and neck localization function
Summary
Proton heavy ion radiotherapy is a new type of radiotherapy that has stoked international interest in recent years and represents the most advanced radiotherapy technique and is the future trend for radiotherapy treatments for cancers [1]. The ion beam is highly lethal to tumors and accurately attacks tumor cells, which reduces damage to surrounding tissue. It induces double-strand DNA breaks, thereby reducing the chances of tumor recurrence and metastasis [2,3,4,5]. During proton heavy ion radiotherapy treatments, the sitting posture of the patients with head and neck cancer, lung cancer, orthopnea [6], dyspnea, and dysphagia is necessary. To meet the needs of the sitting posture for radiotherapy, a number of scientific research institutes and medical device companies around the world have introduced special treatment chairs
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