System for placing brachytherapy source in airway

A radiotherapy and brachytherapy technology, applied in the field of brachytherapy source placement system in the airway, can solve the problems of complicated stent placement steps, cumbersome installation of radioactive particles, difficult adjustment of radiation dose, etc., to achieve convenient radiotherapy dose, avoid Pain, effects of modulating radiation doses

Inactive Publication Date: 2010-05-05
李强 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an airway brachytherapy source insertion system to solve the problems of cumbersome installation of radiation particles, difficulty in radiation dose adjustment, complicated stent insertion steps and difficult positioning in the prior art

Method used

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  • System for placing brachytherapy source in airway
  • System for placing brachytherapy source in airway

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Embodiment 1

[0014] Such as figure 1 and figure 2 As shown, the present invention uses nickel-titanium alloy as material, and is composed of an airway inner fixing part 2, a particle carrying part 1 and a pusher 3. Wherein, the airway internal fixation part 2 is a pod-like stent braided by 8 nickel-titanium alloy wires with a diameter of 0.5 mm, and its length is 4-6 cm (adjusted according to the specific conditions of the patient). The particle-carrying part 1 is a hollow column made of nickel-titanium alloy with an outer diameter of 1.2 mm and a wall thickness of 0.1 mm, which is equal in length to the internal fixing part 2 of the airway. The mouth end is inserted. The inner fixing part 2 of the airway is fixed on both ends of the particle carrying part 1 by a nickel-titanium alloy wire. The pusher 3 is made up of a handle 5, an outer sheath 6, and a push rod 7, and has a diameter of 2.5mm. Wherein the front end of the push rod 7 is screw-shaped, with a diameter of 8 mm, and can be...

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Abstract

The invention relates to a system for placing brachytherapy source in the airway, comprising a fixed part (2) in the airway, a particle carrying part (1) and a pusher (3). The particle carrying part (1) is in the structure of a hollow pillar; the top end of the particle carrying part (1) is closed, and the bottom end is provided with an internal thread opening; the pusher (3) consists of a hand-held part (5), an outer sheath (6) and a push rod (7), wherein the front end of the push rod (7) is provided with a screw which matches with the internal thread opening; the fixed part (2) in the airway is a bean-pod support which is woven by metal wires and is fixed on two ends of the particle carrying part (1) by metal wires; and the particle carrying part (1) and the metal wires are made of the nickel-titanium alloy. The invention can solve the problems existing in the prior art that the placement of the radioactive particles is troublesome, the adjustment of the dosage of the radiological agent is hard, the steps of placing the support are complex and the positioning of the support is difficult.

Description

technical field [0001] The invention belongs to the field of radioactive particle stent systems, in particular to a brachytherapy source implantation system in the airway. Background technique [0002] In recent years, intracavitary brachytherapy has become an effective means to alleviate the stenosis of the trachea and main bronchi caused by direct invasion or compression of advanced malignant tumors. At present, the commonly used intracavitary radiotherapy methods mainly include the following 192 Afterloading radiotherapy system and radioactive particle stent system with iridium as radioactive source. Both have clear therapeutic effects, but the disadvantages are: the former is expensive, requires complex positioning and computer systems, and needs to be performed in a special highly shielded room; while the latter is cumbersome to install particles, difficult to adjust the radiation dose, and difficult to install stents. Guide wire guidance is required, the steps are co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B19/00A61N5/10A61M36/04
Inventor 李强胥武剑
Owner 李强
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