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Radiotherapy tracking and locating marker and implantable puncture needle provided with same

A technology of tracking and positioning and radiation therapy, which is applied in the field of medical devices, can solve the problems of gold label loss and other problems, and achieve the effects of improved effect, high adhesion ability, and short waiting time for stability

Pending Publication Date: 2017-01-18
GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] During the implantation of the above-mentioned markers, due to a large amount of bleeding, that is, when the blood flows out of the puncture needle, the gold label is easily lost. If the puncture needle is full of blood, the markers put in may flow out with the blood. In the case that there is a case where the gold standard is lost

Method used

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  • Radiotherapy tracking and locating marker and implantable puncture needle provided with same
  • Radiotherapy tracking and locating marker and implantable puncture needle provided with same
  • Radiotherapy tracking and locating marker and implantable puncture needle provided with same

Examples

Experimental program
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Effect test

Embodiment 1

[0051] like figure 1 As shown, a radiotherapy tracking and positioning marker, the marker is a cylinder with a single helical groove 1 on the outer surface.

[0052] The diameter of the cylinder is 0.70 mm, the length is 3.5 mm; the depth of the helical groove is 0.15 mm, the width is 0.25 mm, and the helical pitch is 0.65 mm.

[0053] The metal marker is made of gold with a purity of 99.99%.

[0054] In the course of radiotherapy, when performing image-guided radiotherapy, metal positioning markers for image registration or tumor localization are required; the markers are implanted in the tumor or around the tumor before treatment, or fixed on the patient's body surface for treatment Guide the machine to track the tumor and correct the tumor motion error.

[0055] In the process of the present invention, a precision machine tool is used to make 99.99% gold into a cylindrical strip with a diameter of 0.75±0.05 mm in an aseptic and sterilized environment, and 0.20±0.05 mm wid...

Embodiment 2

[0057] like figure 2 As shown, a radiotherapy tracking and positioning marker, the marker is a cylinder with double helical grooves 1 in the same direction on the outer surface, the diameter of the cylinder is 0.80 mm, and the length is 2.5 mm; the The depth of the helical groove is 0.20 mm, the width is 0.1 mm, and the lead of the helix is ​​0.75 mm.

Embodiment 3

[0059] like image 3 As shown, a radiotherapy tracking and positioning marker, the marker is a cylinder with a double helical groove 1 with opposite directions of rotation on the outer surface, the diameter of the cylinder is 0.75 mm, and the length is 3.5 mm; The depth of the spiral groove is 0.25 mm, the width is 0.15 mm, and the lead of the spiral is 0.70 mm.

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Abstract

The invention discloses a radiotherapy tracking and locating marker. The marker can be a cylinder of which the surface is provided with a spiral groove; the marker can be of an annular barb-shaped structure; and the marker can be a cylinder of which the surface is provided with a double-ring-shaped groove; and the marker can be also of a chain-like structure. The invention also discloses an implantable puncture needle provided with the marker; an external bushing comprises a marker implanting cabin; the marker implanting cabin is communicated with a marker implanting channel; and a metal marker of which the surface is provided with a recessed structure is arranged in the marker implanting cabin. With the radiotherapy tracking and locating marker and the implantable puncture needle provided with the marker of the invention adopted, the problem of position deviation of the metal marker caused by the deep breathing or coughing of a patient can be solved; the accuracy of tracking and positioning in a whole therapeutic process can be ensured; single therapy can be completed in a short time; radiotherapy effects can be improved; and the missing of the tiny marker caused by excessively much blood of the puncture needle when the implantable puncture needle provided with the marker is implanted can be avoided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and particularly relates to a radiotherapy tracking and positioning marker for image registration or tumor localization and an implanted puncture needle carrying the marker during image-guided radiotherapy during radiotherapy. Background technique [0002] At present, with the continuous development of radiotherapy technology, precision radiotherapy has improved the curative effect and reduced side effects of tumor radiotherapy due to precise dose delivery and concentrated dose focus. At present, the main method is to implant metal markers (“gold markers” for short) in the tumor and its surrounding areas, obtain the tumor location in real time through digital images, and guide the treatment rays for automatic correction. There are various modes of radiation therapy tracking and image registration, but for specific radiation therapy equipment Cyberknife's breathing tracking and gold standa...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/10A61N5/103A61N5/1048A61N2005/1092A61N2005/1096
Inventor 鞠忠建曲宝林王小深李建雄徐伟王金媛王运来李玉谷珊珊李纪伟张素静刘小亮解传滨戴相昆牛宝龙
Owner GENERAL HOSPITAL OF PLA
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