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Design method of pipe holder capable of bearing micro radioactive particles

A technology of radioactive particles and pipeline stents, which is applied in the internal irradiation treatment of mid-advanced pancreatic cancer and malignant biliary strictures, and in the design field of pipeline stents, which can solve the problems of lack of stent design solutions

Inactive Publication Date: 2009-06-17
路筝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with the current clinical application requirements, there is a lack of a set of effective stent design schemes to optimize the specific structure of one or more pipeline stents and carry corresponding doses of micro-radiation sources to achieve the best clinical radiation therapy effect

Method used

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  • Design method of pipe holder capable of bearing micro radioactive particles
  • Design method of pipe holder capable of bearing micro radioactive particles
  • Design method of pipe holder capable of bearing micro radioactive particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: CT reconstruction design stent

[0029] 1. Digital image scanning and processing

[0030] a. Perform abdominal enhanced CT scan (showing better tumor target area) and MRI cholangiopancreatography (MRCP) scan (showing better pancreatic duct and bile duct) for patients with pancreatic cancer, and import CT and MRCP image sequences into the planning system .

[0031] b. Delineate the tumor target area, surrounding important organs, main pancreatic duct, accessory pancreatic duct and common bile duct in the CT image sequence, and perform 3D image reconstruction.

[0032] c. Because CT scan and MRCP scan each have a coordinate system, which reflects the patient's position when scanning. Adjust the position and relative angle of the MRCP scan coordinate system relative to the origin of the CT scan coordinate system, thereby changing the degree of overlap of the three-dimensional reconstructed images of the two; judging from the knowledge of anatomical structure, if the...

Embodiment 2

[0054] Example 2: Pre-placement of common stents to design pipeline stents

[0055] 1. Perform ERCP pre-operation

[0056] a. Perform ERCP main pancreatic duct intubation, and measure the stenosis of the main pancreatic duct near the head of the pancreas by injecting a contrast agent. The length of the main pancreatic duct is about 20.0 mm, and the diameter of the narrowed section is about 1.5 mm. The main pancreatic duct of the pancreatic body is dilated with a diameter of about It is 3mm-5mm. The accessory pancreatography showed that the accessory pancreatic duct was about 30mm in length and 2mm in diameter. Choledochography showed that the upper part of the pancreatic head area was dilated with a diameter of about 10.0mm. The length of the lower part of the stenosis affected by the tumor was about 40.0mm and the diameter was about 3mm.

[0057] b. Confirm that there is a particle hole in the wall of the pipe stent in the common bile duct, the inner diameter of the particle hole...

Embodiment 3

[0068] Example 3: Pre-placement of the prosthesis stent to design the pipeline stent

[0069] 1. Perform ERCP pre-operation

[0070] a. Perform ERCP main pancreatic duct intubation, and measure the stenosis of the main pancreatic duct near the head of the pancreas by injecting a contrast agent. The length of the main pancreatic duct is about 20.0 mm, and the diameter of the narrowed section is about 1.5 mm. The main pancreatic duct of the pancreatic body is dilated with a diameter of about It is 3mm-5mm. The accessory pancreatography showed that the accessory pancreatic duct was about 30mm in length and 2mm in diameter. Choledochography showed that the upper part of the pancreatic head area was dilated with a diameter of about 10.0mm. The length of the lower part of the stenosis affected by the tumor was about 40.0mm and the diameter was about 3mm.

[0071] b. Confirm that there is a particle hole in the wall of the pipe stent in the common bile duct, the inner diameter of the par...

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Abstract

The invention relates to the technical field of medical apparatuses, in particular to a method for designing a pipe support capable of bearing miniature radioactive particle sources, wherein the pipe support is mainly used for internal radiation treatment of intermediate and late pancreatic cancer and malignant bile duct stenosis. The method can optimally design a concrete structure of the pipe support capable of bearing the miniature radioactive particle sources by utilizing natural cavities (including a common bile duct, a main pancreatic duct, an accessory pancreatic duct and so on) on the circumference of the pancreatic head of a human body. The method comprises: S1, designing the outside diameter of the support, the inside diameter of drainage cavities, the length of the support and so on; S2, selecting different support materials according to a clinic radiation planning, and selecting whether to apply materials with different shielding materials to seal a radiation window; and S3, designing the inside diameter of a particle channel, the dimension of the radiation window and interval arrangement. The method realizes the aims of precise positioning, precise planning and precise treatment, and achieves optimum internal radiation treatment effect.

Description

Technical field [0001] The invention relates to the technical field of medical equipment, and is a method for designing a pipeline stent that can carry a source of micro-radioactive particles, and is mainly used for internal radiation treatment of middle and advanced pancreatic cancer and malignant bile duct stricture. Background technique [0002] Malignant diseases (cholangiocarcinoma, ampullary carcinoma, duodenal papillary cancer, etc.) that cause bile duct stricture and pancreatic cancer are a group of malignant tumors of the digestive tract with dangerous prognosis, low cure rate, and poor prognosis, most of which are already in the middle when found In the late stage, surgical removal is often impossible. Tumors often compress the pancreatic duct and bile duct, causing stenosis or obstruction. For stenosis or obstruction of the duct, endoscopic retrograde cholangiopancreatography (ERCP) is mainly used to place a duct stent with drainage function to relieve clinical symptom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M36/00A61M36/04A61F2/82A61L31/00G06T1/00G06T15/00G06F19/00A61K51/02
Inventor 路筝刘岩
Owner 路筝
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