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A needle holder for radioactive seed implantation

A technology of radioactive particles and needle holders, which is applied in the field of needle holders implanted with radioactive particles, can solve the problems of uncontrollable puncture accuracy, deviation between actual position and designed position, and influence on treatment effect, so as to improve puncture stability, reduce Small tangential offset force, the effect of improving puncture accuracy

Active Publication Date: 2021-10-08
锐德泰医疗科技(成都)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As mentioned in the above method, no matter what kind of guidance method is used, when the radiation particles are implanted into the target area, it is necessary to puncture from the skin surface through a puncture needle. Uncontrollable, resulting in a deviation between the actual position of the particles after implantation and the designed position, affecting the therapeutic effect
At the same time, there are automatic robotic arm guidance alternatives in the prior art, which have better accuracy and efficiency than manual operation. However, since the puncture needle itself is advanced in a straight line, the cut surface at the end will be damaged during the puncture process. The offset caused by the force cannot be compensated by mechanical equipment, and there will also be accuracy problems

Method used

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  • A needle holder for radioactive seed implantation
  • A needle holder for radioactive seed implantation
  • A needle holder for radioactive seed implantation

Examples

Experimental program
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Effect test

Embodiment 1

[0044] This embodiment discloses a needle holder for implanting radioactive particles. The needle holder is installed on a C-arm movable device. The C-arm movable device is such as Figure 7 As shown, the slide rail and the servo motor 10 with three directions can carry out directional movement of the fixed target held by it in a certain space area. The needle holder described in this embodiment is the fixed target, and the patient Then lie flat on the operating table, and adjust its position by moving the portal frame of the C-arm device.

[0045] Specifically, the main body of the needle holder is a tube with a certain length, which is a guide part 2, and the guide part 2 has two openings, wherein a base 3 is provided on one side of the opening, and the base 3 is fixed on C The movable end of the arm. There is an inner passage in the length direction in the guide part 2, and the rotation fixing part 4 which can slide along the inner passage is arranged in the inner passage....

Embodiment 2

[0053] This embodiment also discloses a needle holder for implanting radioactive particles, which includes a rotating fixing part 4 and a guiding part 2, and the puncture needle 6 is arranged on the rotating fixing part 4 and moves with the rotating fixing part 4; the guiding part 2 limits The rotating fixed part 4 driven by the power source travels linearly along the axial direction of the puncture needle 6 , and has a limiting structure on the guide part 2 that restricts the rotating fixed part 4 from rotating around the axis while traveling straight along the axis.

[0054] Wherein, the so-called wedge-shaped cut surface means that its needle head 5 parts have an oblique cut surface, and its sharp point is at the outer edge of its section, while the sharp point of the existing part of the puncture needle 6 is in the middle, and this puncture needle 6 is because of its Without a particle implantation channel, it cannot be used in particle implantation. At the same time, this ...

Embodiment 3

[0063] This embodiment is optimized on the basis of the above-mentioned embodiment 2, such as Figure 3-6As shown in the figure, it can be seen that the head 5 of the guide part 2 is a cylindrical structure, and its outer surface has a spherical surface, which is the middle part of a sphere and the structure formed in the middle after symmetrical cutting on both sides. A movable fitting part 1 is sleeved on the outside of the spherical surface. As can be seen in the figure, the movable fitting part 1 has a clasp that fits with the spherical surface, and a fitting ring with a larger radius connected to the outer end .

[0064] During the puncture process, the machine moves the guide part 2 close to the surface of the human body, and then pushes the guide part 2 directly so that the end face of the fitting ring of the movable fitting part 1 contacts the skin. The needle track of the puncture needle 6 is close to parallel, but the direction of the needle track is not sure whethe...

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Abstract

The invention belongs to the technical field of particle implantation, and discloses a needle holder for radioactive particle implantation, which is fixed with a puncture needle with a wedge-shaped cut surface at the end, including a rotation fixing part and a guide part, and the puncture needle is provided with It is on the rotating fixed part and acts with the rotating fixed part; the guide part restricts the rotating fixed part driven by the power source to travel straight along the axial direction of the puncture needle, and the guiding part has restrictions on the rotating fixed part when it travels straight along the axis. Limiting structure for rotating around the axis. The present invention adopts a fixed guide part structure, fixes the puncture needle through the rotating fixed part inside, and makes the puncture needle move linearly and rotate along its axis with the continuous push of the power source, thereby reducing the puncture resistance and reducing the Small tangential offset force improves puncture accuracy.

Description

technical field [0001] The invention belongs to the technical field of particle implantation, and in particular relates to a needle holder for radioactive particle implantation. Background technique [0002] The full name of seed implantation is "radioactive seed implantation therapy technology", which is a treatment method that implants a radioactive source into the tumor to destroy the tumor. The particle implant therapy technique involves a radioactive source, the core of which is radiating particles. What is used clinically is a substance called iodine 125. Each iodine 125 particle is like a small sun, and the rays near the center are the strongest, which can minimize the damage to normal tissues. Radioactive seed implantation therapy mainly relies on a stereotaxic system to accurately implant radioactive seeds into the tumor body, and emits continuous, short-distance radiation through a miniature radioactive source, so that the tumor tissue is destroyed to the maximum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M36/04A61B17/34
CPCA61B17/3403A61B2017/3405A61N5/1007A61N5/1014A61N2005/1024
Inventor 曲飞寰官辉首峰张景俊周青春马雷吴智生韦忠堂贾曦石广越
Owner 锐德泰医疗科技(成都)有限公司
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