Integrated ejector pin storing and conveying module for implantation of radioactive particles

Abstract

The invention discloses an integrated ejector pin storing and conveying module for implantation of radioactive particles. The integrated ejector pin storing and conveying module comprises: a shell; an ejector pin storage disc, which is arranged in the shell; a flexible ejector pin, which is wound on the ejector pin storage disc; a straightening mechanism, which comprises two rows of calibration wheels that are sequentially arranged on the shell in a longitudinal direction, wherein a straightening gap is formed between every two adjacent calibration wheels, the connecting line of all the straightening gaps is in an S shape, and the outer wall of each calibration wheel is provided with an annular extrusion groove attached to the flexible ejector pin; and a conveying mechanism, which is arranged on the shell and used for pulling the flexible ejector pin to advance along the straightening gaps and linearly conveying the flexible ejector pin to a preset track. The whole integrated module is simple and ingenious in structure; the flexible ejector pin with enough length can be contained in a small space; the flexible ejector pin can be effectively straightened; and the straightness and flatness of the flexible ejector pin are guaranteed, and the implantation precision of radioactive particles is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thimble storage and delivery integrated module for radioactive particle implantation. Background technique [0002] As an extension of traditional radiation therapy, brachytherapy uses puncture needles to implant radioactive particles into the patient's tumor, and radiates radiation within a short distance to achieve the effect of cancer treatment. [0003] Today's implantation of radioactive particles is based on the operation of puncture surgery robots. This type of puncture surgery robot is mainly composed of a puncture needle, a radioactive particle storage module, and a thimble push module. The radioactive particle storage module sends the radioactive particles to its internal outlet. After the material track, the thimble pushes the thimble on the module to make a linear motion along the predetermined trajectory, and then pushes the radioactive particles into the...

AI Technical Summary

Problems solved by technology

[0004] In the existing puncture surgical robots, most of the thimbles used to push radioactive particles in a straight line are rigid linear thimbles. Since such thimbles cannot be bent, if the movement path of the thimble needs to be extended, the linear storage space of the thimble needs to be extended accordingly. , it is more necessary to have a corresponding supporting mechanism to avoid the deformation of the thimble under the action of gravity, which further increases the occupied space of the relevant execution end

[0005] Although in a small number of puncture surgery robots, the thimble is centrally stored in a proprietary storage box in an integrated form, before the puncture operation, it is necessary to pull the thimble out of the storage box through the corresponding traction mechanism or power device, because the thimble Due to the problem of processing accuracy, there will be a certain curvature. Therefore, before the thimble implants the particles into the puncture needle track, it needs to be aligned to ensure the accurate implantation of subsequent radioactive particles. However, this type of puncture robot lacks the alignment of the thimble. Handling, which affects the accuracy of radioactive seed implantation and puncture surgery

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