A feeding mechanism of a particle implantation device

Abstract

The invention provides a feeding mechanism of a particle implantation device. The feeding mechanism includes a particle clip. The particle clip includes a particle cover cylinder, a particle storage chamber and a particle driving part. The particle storage chamber includes a first end and an opposite end. At the second end, the particle driving part pushes the particles from the first end to the second end; the particle clip has a first particle channel at the second end, and the feeding mechanism includes a particle top piece that can move in the first particle channel; the particle bomb The length direction of the clip and the axial direction of the puncture needle are arranged in a non-perpendicular state; the feeding mechanism also includes a commutator, and the commutator has a second particle channel; the commutator has a first working position and a second working position. When the commutator is at the first working position, the first particle channel is coaxial with the second particle channel, and when the commutator is at the second working position, the second particle channel is coaxial with the push needle and the puncture needle. The present invention provides sufficient particles for the surgical procedure while allowing the particle implantation device to be compact in size.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a feeding mechanism of a particle implantation device. Background technique [0002] Implantation of radioactive seeds in the treatment of malignant tumors is a minimally invasive treatment method, which has broad application prospects in clinical practice. This method has the advantages of simple operation, less side effects, and good therapeutic effect. [0003] The radioactive material is implanted into the human body through the 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, a plurality of puncture needles are inserted into the patient's body in sequence according to predetermined penetration depths and positions, and then each puncture needle is operated one by one. When operating each puncture needle, first use ...

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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