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Medical stent in chemotherapy tract

A technology of inner stent and cavity, which is applied in the field of medical devices, can solve problems such as failure to achieve therapeutic effect, life-threatening, easy bleeding, etc., and achieve the effects of improving local control rate, prolonging survival period, and high regional response

Active Publication Date: 2012-07-11
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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  • Medical stent in chemotherapy tract
  • Medical stent in chemotherapy tract
  • Medical stent in chemotherapy tract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: as figure 1 As shown, a medical chemotherapy intracavity stent includes a stent main body 1, 36 chemotherapeutic drugs 2 are fixedly arranged on the outer wall of the stent main body 1, the chemotherapeutic drugs 2 are bound on the stent main body 1, and the gap between the chemotherapeutic drugs 2 is 1.5-2.5 cm; chemotherapy drug 2 is mitomycin C microspheres, or cisplatin microspheres, or doxorubicin microspheres, or 5-fluorouracil microspheres, or camptothecin microspheres, or methotrexate Any one of erythromycin microspheres, or daunorubicin microspheres, or javanica javanica oil microcapsules, or epinephrine gel, or carboplatin, or carmustine (BCNU), or paclitaxel, or doxorubicin.

[0030] The advantage of this embodiment is that the chemotherapeutic drug 2 can be placed into the tumor lesion at one time through the stent main body 1 . Not only solve the problem of obstruction, but also inhibit the further development of tumors.

[0031] The chemoth...

Embodiment 2

[0036] Embodiment 2: as figure 2 , image 3 and Figure 4 As shown, a medical chemotherapy intracavity stent includes a stent main body 1, 36 chemotherapeutic drugs 2 are fixedly arranged on the outer wall of the stent main body 1, and the chemotherapeutic drugs 2 are placed in a spherical drug compartment 3, and the drug compartment 3 The gap is 1.5 to 2.5 centimeters; the drug storehouse 3 is fixed on the outer wall of the bracket body 1, and the drug release port 4 is arranged on the outer wall of the spherical drug storehouse 3, and the drug release port 4 faces the outside of the bracket body 1.

[0037] Chemotherapy drug 2 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.

[00...

Embodiment 3

[0049] Embodiment 3: as Figure 5 , Figure 6 and Figure 7 As shown, a medical chemotherapy intracavity stent includes a stent main body 1, 36 chemotherapeutic drugs 2 are fixedly arranged on the outer wall of the stent main body 1, and the chemotherapeutic drugs 2 are placed in a medicine bag 5 with an open end. The gap is 1.5-2.5 cm; the medicine bag 5 is provided with a binding rope 6, and the medicine bag 5 is bound to the outer wall of the bracket main body 1 through the binding rope 6.

[0050] The medicine bag 5 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 polydiglycolic acid Oxanone (PPDO), or polyether / polyester (PELA) copolymer, or polycaprolactone and copolymer (PLCA), or polyglycolide (PGA), or polyamino acid, or poly-β-hydroxy Butyric acid (poly-β-hydroxybutyrate, PHB) material, or chitin fiber, or collagen fiber, or algin...

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Abstract

The invention discloses a medical stent in a chemotherapy tract. The medical stent comprises a stent main body, wherein more than one chemotherapy medicine is fixedly arranged on an outer wall of the stent main body; and a gap between the chemotherapy medicines is 1.5 to 2.5cm. The medical stent has the advantages that: chemotherapy is 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 medical chemotherapy cavity. 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. [0004] Respirator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61M31/00A61L31/16A61L31/06A61L31/14
Inventor 毛宇
Owner 毛宇
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