Cylindrical optical fiber balloon catheter device for biliary tract tumor photodynamic precise treatment

A fiber optic catheter and balloon catheter technology, applied in the field of medical devices, can solve problems such as inaccurate positioning, uneven irradiation of columnar optical fibers, etc., and achieve the effect of improving the effect

Pending Publication Date: 2022-08-09
THE FIRST AFFILIATED HOSPITAL OF MEDICAL COLLEGE OF XIAN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a cylindrical fiber optic balloon catheter device for precise photodynamic therapy of biliary tract tumors. Place the columnar optical fiber in the inflatable balloon and fiber optic catheter to solve the problem of uneven irradiation and inaccurate positioning of the existing columnar optical fiber in the biliary tract

Method used

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  • Cylindrical optical fiber balloon catheter device for biliary tract tumor photodynamic precise treatment
  • Cylindrical optical fiber balloon catheter device for biliary tract tumor photodynamic precise treatment
  • Cylindrical optical fiber balloon catheter device for biliary tract tumor photodynamic precise treatment

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Embodiment 1

[0050] For patients with distal cholangiocarcinoma and hilar cholangiocarcinoma Bismuth-Corlett type I, the matching device of the present invention is selected according to the length of the lesion and placed in the common bile duct 13 or the common hepatic duct 14, the inflatable balloon 1 spans the longest tumor 15 And both ends exceed 0.5-1cm to ensure the scope of treatment. The quantitative inflation device 16 is connected to the connector 8 at the end of the outer sleeve 3 for inflation, and the body surface area of ​​the inflatable balloon 1 is calculated according to the inflation amount under standard pressure, and the light power is set according to the body surface area and suitable power density. Select the cylindrical optical fiber with the same length of the light-emitting part and the inflatable balloon 1, insert it into the optical fiber inlet 6 and place it into the optical fiber catheter 2, and the marking points at both ends of the cylindrical optical fiber ...

Embodiment 2

[0052] In patients with Bismuth-Corlett II-III hilar cholangiocarcinoma, the tumor often invades the common hepatic duct 14 and the right hepatic duct 12 or left hepatic duct 10 on one side. According to the length of the lesion, the matching device of the present invention is selected and placed into the common hepatic duct 14 and the right hepatic duct 12. The inflatable balloon 1 spans the longest tumor 15 and exceeds 0.5-1 cm at both ends. One end is located in the right hepatic duct 12, and the other end is located in the common hepatic duct 12. In 14, the scope of treatment is guaranteed. The quantitative inflation device 16 is connected to the connector 8 at the end of the outer sleeve 3 for inflation, and the body surface area of ​​the inflatable balloon 1 is calculated according to the inflation amount under standard pressure, and the light power is set according to the body surface area and suitable power density. Select the cylindrical optical fiber with the same le...

Embodiment 3

[0054] For patients with hilar cholangiocarcinoma Bismuth-Corlett IV, the tumor often invades the left hepatic duct 10 and the right hepatic duct 12; the device of the present invention can be selected and inserted into the left hepatic duct 10 and the right hepatic duct through the PTBD route according to the length of the lesion 12. The inflatable balloon 1 spans the longest tumor 15 with both ends exceeding 0.5-1 cm, one end is located in the right hepatic duct 12, and the other end is located in the left hepatic duct 10, to ensure the scope of treatment. The quantitative inflation device 16 is connected to the connector 8 at the end of the outer sleeve 3 for inflation, and the body surface area of ​​the inflatable balloon 1 is calculated according to the inflation amount under standard pressure, and the light power is set according to the body surface area and suitable power density. Select the cylindrical optical fiber with the same length of the light-emitting part and th...

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Abstract

A cylindrical optical fiber balloon catheter device for biliary tract tumor photodynamic precise treatment comprises an inflatable balloon, an outer sleeve and an optical fiber catheter which are all made of transparent materials. The head end of the outer sleeve is communicated with the inflatable balloon, the tail end of the outer sleeve is connected with the quantitative inflation device, and the quantitative inflation device is used for quantitatively inflating the inflatable balloon through the outer sleeve; the head end of the optical fiber catheter is arranged in the inflatable balloon along the outer sleeve, the tail end of the optical fiber catheter extends out of an opening in the side wall of the outer sleeve, the columnar optical fiber is arranged from an optical fiber inlet in the tail end of the optical fiber catheter, and a light-emitting part of the columnar optical fiber is located at the head end of the optical fiber catheter. By means of the inflatable balloon, a focus can be completely covered, the collapsed bile duct can be expanded, the optical fiber is kept at the position of the duct core, bile, blood and the like are discharged, the optical fiber can conveniently conduct photodynamic therapy through the optical fiber catheter, and the problem that laser irradiation is uneven due to the fact that the optical fiber is attached to one side of the bile duct wall is solved; the light transmittance is prevented from being influenced by bile, so that the biliary tract tumor photodynamic therapy effect is improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a cylindrical optical fiber balloon catheter device for photodynamic precise treatment of biliary tract tumors. Background technique [0002] Photodynamic therapy (PDT) has been used in the treatment of unresectable cholangiocarcinoma since the 1990s. PDT is a therapy that uses special drugs (photosensitizers), which are activated by laser light of a specific energy and wavelength, and then photochemically react to kill cancer cells in the target tissue. PDT has the advantages of targeted, minimally invasive, less adverse reactions, and repeatable operations, and is a powerful supplement to tumor therapy. As a tumor treatment method that has been continuously improved and developed in recent years and has unique advantages, PDT has been widely used in clinical applications, especially in the treatment of cholangiocarcinoma. A minimally invasive and highly se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/06A61M25/10A61B5/107
CPCA61N5/062A61N5/0603A61M25/1002A61M25/10183A61B5/1076A61B5/6852A61N2005/063A61M2025/0003
Inventor 王荣峰庞利辉赵萌路倚文吴荣谦顾瑛吕毅
Owner THE FIRST AFFILIATED HOSPITAL OF MEDICAL COLLEGE OF XIAN JIAOTONG UNIV
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