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Membrane breaking device for endovascular surgery

A membrane rupturer and membrane rupture technology, which is applied in the field of medical devices, can solve problems such as lack of positioning and puncture length, insufficient support force, and puncture of blood vessels, and achieve good flexibility and blood vessel passage, good radial positioning force and The effect of flexibility and good tensile strength

Inactive Publication Date: 2017-05-31
SUZHOU INNOMED MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to using a rupture needle is to align the needle at the center of the membrane, and the strength should be appropriate. If the direction is not aligned with the center of the membrane and deviates to the periphery and the membrane is hard, it will lead to excessive force, which will puncture the blood vessel and enter the pleura by mistake. life-threatening hydropneumothorax or cardiac tamponade
[0005] However, the membrane rupture needle is used to rupture the membrane. In the prior art, due to the long distance from the puncture point to the membrane, the supporting force is not enough, the strength is difficult to grasp, the direction is difficult to control, and the lack of accurate positioning and control of the puncture length makes membrane rupture difficult. Large size, long time, low success rate, high accidental injury rate, prone to puncture position shift and puncture too deep during operation, resulting in puncture of blood vessels or even strayed into the pleura or pericardium causing unnecessary damage

Method used

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  • Membrane breaking device for endovascular surgery
  • Membrane breaking device for endovascular surgery
  • Membrane breaking device for endovascular surgery

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Effect test

no. 1 approach

[0027] figure 1 is a schematic diagram of a membrane rupturer according to an embodiment of the present invention; Figure 2a and Figure 2b yes figure 1 Schematic diagram of the membrane rupturer in use; image 3 yes figure 1 An enlarged schematic diagram of the membrane rupturer in puncturing the membrane.

[0028] Such as figure 1 As shown, the rupture device of the present invention includes: a rupture needle 1, a double-layer sheath 2 and a positioning bracket 3, wherein the double-layer sheath includes an inner sheath 21 nested outside the rupture needle and a nested inner sheath. The outer sheath tube 22 outside the sheath tube, and the inner sheath tube 21, the outer sheath tube 22 and the rupture needle 1 can move relative to each other in the axial direction, specifically, the inner sheath tube 21 and the outer sheath tube 22 can move relative to each other in the axial direction The rupture needle 1 and the inner sheath 21 can move relative to each other in th...

no. 2 approach

[0041] The embodiment of the present invention also provides a kind of operation method of above-mentioned rupture device, and described method comprises the following steps:

[0042] a. Puncture the hollow puncture needle into the human body through the blood vessel to the target position. In this step, usually during the operation, it is necessary to perform routine skin disinfection at the puncture site first, then local anesthesia, and then use the tip of a scalpel to cut an incision of about 2 to 3 mm in the skin at the puncture point, and then insert the puncture needle through the skin incision. For puncture, during operation, the user presses the proximal end of the target artery with his left finger, advances the needle obliquely according to the required needle insertion angle, sees pulsating blood flow out, indicating that the needle is already in the artery, and then pulls out the needle core.

[0043] b. Extend the puncture guide wire into the blood vessel through...

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Abstract

The invention provides a membrane breaking device for endovascular surgery. The membrane breaking device comprises a membrane breaking needle, a double-layer sheath and a positioning support, wherein the double-layer sheath comprises an inner sheath sleeving the membrane breaking needle and an outer sheath sleeving the inner sheath, and the inner sheath, the outer sheath and the membrane breaking needle can relatively move along the axial directions of one another; the positioning support is woven by at least one weaving filament, the far end of the positioning support is connected with the inner sheath, the near end of the positioning support is connected with the outer sheath, and the expansion and contraction of the positioning support is controlled by controlling the relative movement between the inner sheath and the outer sheath. The membrane breaking device is applicable to membrane type Budd-Chiari syndrome and covered stent in-vivo perforation, good in flexibility and blood vessel passing ability, capable of satisfying various requirements and capable of safely and accurately breaking a membrane.

Description

technical field [0001] The present invention relates to a medical appliance, and more particularly, to a septum rupturer for intravascular surgery. Background technique [0002] Budd-Chiari syndrome refers to the stenosis or complete occlusion of the inferior vena cava or (and) hepatic vein in the posterior segment of the liver, resulting in obstruction of hepatic venous return, clinically manifested as hepatomegaly, progressive liver function damage, and massive ascites. Severe cases may have upper gastrointestinal bleeding, hematemesis and melena, and advanced patients are all complicated with liver cirrhosis, which seriously threatens human life. The incidence rate of intrinsic disease is higher in our country. The most common type is limited stenosis or obstruction of the inferior vena cava, which is divided into simple inferior vena cava septum type, limited stenosis of inferior vena cava and limited obstruction of inferior vena cava. There is also diffuse stenosis or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B90/00
CPCA61B17/00A61B2017/00778A61B17/3478A61B2017/22038A61B2017/22049A61B2017/22069A61B2017/22094A61B2090/3614A61B2090/034A61B2090/062A61B17/3403A61B17/3417A61B17/3468A61M25/06
Inventor 曲乐丰柏骏赫明龚霄雁魏继昌
Owner SUZHOU INNOMED MEDICAL DEVICE