A rapid positioning and opening device for radiotherapy thermoplastic film

Abstract

The invention discloses a rapid positioning and opening device for a thermoplastic film for radiotherapy, which comprises a sleeve with an open lower end; the sleeve is also provided with a liftable blade mounting plate and barbs, and there are multiple barbs. Each barb is located outside the blade mounting plate; a plurality of side pressure plates telescopic to the center of the sleeve are also installed on the side wall of the sleeve, and a detachable cutting blade and a lower pressure plate are installed on the blade mounting plate, and the lower pressure plate Located on the inside of the cutting blade. In the process of opening holes in the low-temperature thermoplastic memory film, the invention does not need to wait for the low-temperature thermoplastic memory film to cool, harden, and shape the patient's body surface, and can realize "online" hole opening at any position on the patient's body surface, and the low-temperature heat The plastic memory film is far away from the patient's body surface during the cutting process, and the patient's comfort is better; at the same time, the invention can quickly complete the opening process, reducing the waiting time of the patient and the workload of the technician, so that after the low-temperature thermoplastic memory film is opened The incision is regular and smooth, and the structure is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of human body positioning devices for radiotherapy, and in particular relates to a rapid positioning and opening device for radiotherapy thermoplastic films. Background technique [0002] Radiation therapy is one of the three main treatment methods for tumors. With the increasing development of radiotherapy technology, it has entered the era of precise individualized radiotherapy. During the radiotherapy process, the fixation of the radiotherapy position is an important link in the implementation of precise radiotherapy. The combination of the fixation device and the corresponding thermoplastic film can be used to precisely fix the position, which effectively guarantees the repeatability of the patient's radiotherapy position and the accuracy of treatment. The existing radiotherapy position fixation adopts a low-temperature thermoplastic memory film composed of a polymer material. The low-temperature thermop...

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Problems solved by technology

[0004] Existing low-temperature thermoplastic memory film opening methods mostly use utility knife, scissors, puncher, etc.; The opening process is time-consuming, laborious, limited in location, low in quality and efficiency, and the edge of the incision is prone to burrs, poor comfort for patients, and easy to accidentally injure patients and medical staff. Scratch other areas outside the opening; if a hole punch is used to open holes in the low-temperature thermoplastic memory film, but in order to fit the patient's body surface, the shape of the hardened thermoplastic film is irregular and arched, which makes positioning and punching very difficult. Inconvenient, leaving more areas on the thermoplastic film unperforated

[0005] The above hole opening methods all need to be removed from the patient after the plastic hardening of the low-temperature thermoplastic memory film. It is not only difficult to ensure the accuracy and suitability of the hole opening and the comfort of the patient's fixed position; At the same time, if the opening of the low-temperature thermoplastic memory film is used to mark the patient's body surface, the medical staff needs to require the patient to maintain the same position as before when the thermoplastic film is fixed during the process of opening the hole, and wait until the opening is completed. The body surface markers can only be drawn after the hole is completed on the patient's body surface, which not only takes a lot of time in the whole process, but also makes it difficult for the patient to maintain the same position during the whole process, which greatly reduces the accuracy of the marking

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