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Intracavitary stent for medical radiotherapy and chemotherapy

An inner stent and cavity technology, applied in the field of medical radiotherapy and chemotherapy cavity stent, can solve the problems of ineffective treatment, life-threatening, easy perforation, etc., to improve the local control rate, prolong the survival period, and affect the normal tissue. less effect

Active Publication Date: 2016-01-20
毛宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing stents carrying radioactive particles still have many deficiencies in the treatment of channel obstruction caused by advanced tumors
Because the organs treated by stents are all pipelines with thin tube walls, and the growth of tumors is brittle and easy to bleed, if the standard treatment dose for tumors is used, the local treatment dose will be too large, easy to perforate and bleed during treatment, and life-threatening ; If the dose is reduced, the expected therapeutic effect will not be achieved

Method used

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  • Intracavitary stent for medical radiotherapy and chemotherapy
  • Intracavitary stent for medical radiotherapy and chemotherapy
  • Intracavitary stent for medical radiotherapy and chemotherapy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 As shown, a stent in a medical radiotherapy and chemotherapy cavity includes a stent main body 1, 16 airtight radiotherapy chambers 2 are fixedly arranged on the outer wall of the stent main body 1, and radiotherapy particles are arranged in the radiotherapy chamber 2; The gap is 1.5-2.5 cm; chemotherapy drugs 3 are fixed on the outer wall of the bracket main body 1 between adjacent radiotherapy chambers 2 . Chemotherapeutic drugs 3 are bound on the stent main body 1 . Chemotherapy drug 3 is mitomycin C microspheres, or cisplatin microspheres, or doxorubicin microspheres, or 5-fluorouracil microspheres, or camptothecin microspheres, or methotrexate microspheres, or Any one of daunorubicin microspheres, or Brucea javanica oil microcapsules, or epinephrine gel, or carboplatin, or carmustine (BCNU), or paclitaxel, or doxorubicin.

[0028] The advantage of this embodiment is that the chemotherapeutic drug 3 and the radiotherapy chamber 2 are plac...

Embodiment 2

[0038] Embodiment 2: as figure 2 , image 3 and Figure 4 As shown, a stent in a medical radiotherapy and chemotherapy cavity includes a stent main body 1, 16 airtight radiotherapy chambers 2 are fixedly arranged on the outer wall of the stent main body 1, and radiotherapy particles are arranged in the radiotherapy chamber 2; The gap is 1.5 to 2.5 cm; chemotherapy drugs 3 are fixed on the outer wall of the stent body 1 between adjacent radiotherapy chambers 2, and the chemotherapeutic drugs 3 are placed in a spherical drug chamber 4, which is fixed in the adjacent radiotherapy chamber On the outer wall of the stent main body 1 between the 2, a drug release port 5 is provided on the outer wall of the spherical medicine compartment 4, and the drug release port 5 faces the outside of the stent main body 1. Chemotherapy drug 3 is mitomycin C microspheres, or cisplatin microspheres, or doxorubicin microspheres, or 5-fluorouracil microspheres, or camptothecin microspheres, or met...

Embodiment 3

[0049] Embodiment 3: as Figure 5 , Figure 6 and Figure 7 As shown, a stent in a medical radiotherapy and chemotherapy cavity includes a stent main body 1, 16 airtight radiotherapy chambers 2 are fixedly arranged on the outer wall of the stent main body 1, and radiotherapy particles are arranged in the radiotherapy chamber 2; The gap is 1.5-2.5 cm; chemotherapy drugs 3 are fixed on the outer wall of the stent body 1 between adjacent radiotherapy chambers 2,

[0050] Chemotherapeutic drugs 3 are placed in a medicine bag 6 with an opening at one end, and a tie rope 7 is provided on the medicine bag 6 , and the medicine bag 6 is bound to the outer wall of the bracket body 1 between adjacent radiotherapy chambers 2 through the tie rope 7 .

[0051] The medicine bag 6 is made of bioabsorbable fiber, such as polylactic acid (PDLLA, PLLA, PLA) material, or polyglutamic acid (polyglutamic acid PGA), or polylactic acid-glycolic acid copolymer (PLGA), or polydioxane Ketone (PPDO), ...

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Abstract

The invention discloses a medical stent in radiotherapy and chemotherapy tracts. The medical stent comprises a stent main body, wherein more than one airtight radiotherapy bin is fixedly arranged on an outer wall of the stent main body; radiotherapy particles are arranged in the radiotherapy bins; a gap between the radiotherapy bins is 1.5 to 2.5cm; and chemotherapy medicines are fixed on the outer wall of the stent main body between adjacent radiotherapy bins. The medical stent has the advantages that: radiotherapy and chemotherapy are locally performed, systemic side effects are reduced, and the toxic and side effects are reduced.

Description

Technical field: [0001] The invention relates to a medical device, in particular to a stent in a cavity for medical radiotherapy and chemotherapy. Background technique: [0002] Malignant strictures of the respiratory tract, digestive tract, and biliary tract are often caused by growth into the lumen or infiltration of the tube wall by lung cancer, esophageal cancer, gastric cancer, small intestine cancer, colon cancer, bile duct cancer, gallbladder cancer, pancreatic cancer, ampullary cancer, and hepatic hilar metastases due to. [0003] Although surgery is the first choice to relieve malignant stenosis, many patients are already in the middle and late stages of cancer when they see a doctor. Surgical treatment is difficult, with many complications and high mortality. However, with radiotherapy or chemotherapy, the patient's obstructive symptoms disappear slowly or cannot disappear, and there are disadvantages of systemic adverse reactions and large toxic and side effects....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/90A61M36/12A61M31/00A61L31/16
Inventor 毛宇
Owner 毛宇
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