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Expandable percutaneous drainage tube

A drainage tube and rubber tube technology, which is applied in the field of minimally invasive surgery of medical devices, can solve the problems of easy obstruction of the puncture and drainage tube, difficulty and risk of puncture and drainage operation by increasing the diameter of the drainage tube, and inability to perform minimally invasive surgery.

Inactive Publication Date: 2016-09-21
张建生 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the inner diameter of the puncture drainage tube is too small, it is easy to block and can not be treated with minimally invasive surgery, increasing the diameter of the drainage tube increases the difficulty and risk of puncture drainage operation

Method used

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  • Expandable percutaneous drainage tube
  • Expandable percutaneous drainage tube
  • Expandable percutaneous drainage tube

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific implementation mode one: minimally invasive surgery implementation.

[0010] 1. Confirm the puncture site and needle path by imaging examination (B-ultrasound, CT) before operation.

[0011] 2. After local anesthesia at the puncture site, cut the skin about 1 cm, and insert the puncture needle into the lesion under the guidance of B-ultrasound.

[0012] 3. Insert the guide wire into the lesion through the puncture needle, pull out the puncture needle, and keep the guide wire inside the lesion.

[0013] 4. Expand the needle tract with a dilator through the guide wire.

[0014] 5. Insert the expandable drainage tube into the lesion through the guide wire and fix it properly.

[0015] 6. The built-in segmented shape memory alloy mesh structure tube is expanded by body temperature or heating with a heating rod to form a treatment channel with a diameter of more than 5mm.

[0016] 7. Use various surgical instruments to treat through puncture and drainage tube acc...

specific Embodiment approach 2

[0017] Specific embodiment two: implementation plan of puncture and drainage operation.

[0018] 1. Confirm the puncture site and needle path by imaging examination (B-ultrasound, CT, etc.) before operation.

[0019] 2. After local anesthesia at the puncture site, incise the skin about 1 cm, and insert the puncture needle into the lesion under the guidance of B-ultrasound (or CT).

[0020] 3. Insert the guide wire into the lesion through the puncture needle, pull out the puncture needle, and keep the guide wire in the lesion.

[0021] 4. Dilate the needle tract with a dilator over the guide wire.

[0022] 5. Insert the expandable drainage tube into the lesion through the guide wire and fix it properly.

[0023] 6. The built-in segmented shape memory alloy mesh structure tube is expanded by body temperature or heating with a heating rod to form a drainage channel with a diameter of more than 5mm.

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Abstract

The invention discloses an expandable percutaneous drainage tube. The percutaneous drainage tube has the advantages that: 1, a sectional shape memory alloy reticular structure tube is arranged in a rubber tube, and can made radial expansion and axial shrinkage in the rubber tube, but the percutaneous drainage tube can be prevented from axially greatly shrinking; 2, after gall bladder or intrahepatic bile duct is subjected to percutaneous drainage, the expanded sinus tract can be directly subjected to therapeutic choledochoscopy by using the expandable percutaneous drainage tube, calculus is taken out to protect a patient from operating pain, and the expandable percutaneous drainage tube has less injury and is safe in comparison with an existing minimally invasive method; and 3, after a necrosis substance on the periphery of severe pancreatitis is subjected to percutaneous drainage, a conventional drainage tube is usually blocked by the necrosis substance, and the drainage effect is lost, but a thick drainage tube for first puncture faces a higher puncture risk. By using the expandable percutaneous drainage tube, smooth drainage of the drainage tube is benefited, and cleaning and other further treatments can be carried out through the sinus tract built-in endoscope appliance.

Description

technical field [0001] The invention relates to the field of minimally invasive surgery of medical equipment. In particular, an expandable puncture drainage tube prepared by a rubber tube and a built-in segmented shape memory alloy mesh structure tube is provided. Background technique [0002] Puncture and drainage is the basic technique of surgery, widely used in various fields of surgery, such as gallbladder puncture and drainage, biliary puncture and drainage, thoracentesis and drainage, abdominal cavity puncture and drainage, pancreatic pseudocyst puncture and drainage, peripancreatic abscess puncture and drainage, etc. The inner diameter of the puncture drainage tube is generally 1mm-3mm. In some cases, if the inner diameter of the puncture drainage tube is too small, the drainage effect will be affected; and if the diameter of the drainage tube is increased, the operation difficulty and risk of puncture drainage will be increased. The small inner diameter of the punc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/00A61M25/14
CPCA61M25/0023A61M25/0043A61M2025/0024A61M2205/0266A61M1/84
Inventor 张建生黄正王晓岚刘玮马伟王利明
Owner 张建生
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