Feeding mechanism of particle transplanting device

Abstract

The invention provides a feeding mechanism of a particle transplanting device. The feeding mechanism comprises a particle cartridge holder, a particle propping piece and a commutator, wherein the particle cartridge holder comprises a particle hood cylinder, a particle storing cavity and a particle driving component; the particle storing cavity comprises a first end and a second end opposite to thefirst end; the particle driving component is used for pushing particles from the first end to the second end; a first particle channel is formed in the second end, of the particle cartridge holder; the particle propping piece can move in the first particle channel; the length direction of the particle cartridge holder is not perpendicular to an axial direction of a puncture needle; the commutatoris provided with a second particle channel; the commutator is provided with a first working position and a second working position; when the commutator is located at the first working position, the first particle channel and the second particle channel are coaxial; and when the commutator is located at the second working position, the second particle channel and a push pin and the puncture needleare coaxial. Through the adoption of the feeding mechanism disclosed by the invention, ample particles are provided in the operation process, and the particle transplanting device is compact in dimension.

Description

Technical field [0001] The invention belongs to the field of medical equipment, and specifically relates to a feeding mechanism of a particle implantation device. Background technique [0002] Radioactive seed implantation for the treatment of malignant tumors is a minimally invasive treatment method and has broad clinical application prospects. This method has the advantages of simple operation, small side effects, and good therapeutic effect. [0003] The radioactive material is implanted into the human body through a particle implantation device. The front end of the particle implantation device is connected with a puncture needle, and the rear end is connected with a push needle. During the operation, generally, multiple puncture needles are inserted into the patient's body according to a predetermined penetration depth and position, and then each puncture needle is operated one by one. When operating each puncture needle, first use the seed implanter to fix the corresponding...

AI Technical Summary

Problems solved by technology

[0004] At present, the widely used particle implantation devices all have particle storage mechanisms—magazines. These devices generally have the following deficiencies: (1) The particle clips are small, and the particle clips need to be replaced frequently in operations that require more particles. Increase the burden on the operator and prolong the operation time; (2) The length direction of the particle clip 1 of the particle implantation device is arranged perpendicular to the axes of the puncture needle 2 and the push needle 3, such as figure 1 As shown, the radial dimension of the whole particle implantation device is larger, which brings inconvenience to the operation process of some lesion positions

[0005] In order to enable the particle clip to store enough particles, a way that those skilled in the art can easily think of is to increase the length of the particle clip, but since the length direction of the particle clip is perpendicular to the axis of the puncture needle, increasing the particle clip The length of the clamp increases the radial dimension of the particle implantation device accordingly, which is even more unfavorable for the operation of the operation.

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