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an inferior vena cava filter

A technology of vena cava and filter, applied in the field of medical equipment

Active Publication Date: 2021-07-06
SHENZHEN KYD BIOMEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of filters, some filters already have most of the above characteristics, but so far, any filter can no longer satisfy the above characteristics at the same time

Method used

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  • an inferior vena cava filter
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown, the vena cava filter involved in the present invention can be placed at the position of the inferior vena cava 7 between the renal vein 9 and the iliac vein 8 through an interventional method to prevent thrombus from the lower extremities from ascending into the lungs and causing pulmonary embolism. Such as figure 2 Or as shown in 4, we adopt a single-layer filter design, its structure has excellent mechanical stability, it is not easy to break and fall apart, and maintains its structural integrity. Recovery hook 1 is used for recovery of filter. Connecting part 12 is arranged on the below of recovery hook 1, and connecting part is provided with the part that is connected with pushing device inside, and the connection mode of connecting part and pushing device can be threaded connection, buckle connection and snare connection. The lower end of the connecting part 12 is divided into a plurality of first support rods 4 downwards, and each sup...

Embodiment 2

[0055] Such as figure 1 As shown, the vena cava filter involved in the present invention can be placed at the position of the inferior vena cava 7 between the renal vein 9 and the iliac vein 8 through an interventional method to prevent thrombus from the lower extremities from ascending into the lungs and causing pulmonary embolism. Such as figure 2 As shown, we adopt a single-layer filter design, which has excellent mechanical stability, is not easy to break and fall apart, and maintains its structural integrity. Such as figure 2 As shown, the vena cava filter of the present invention adopts a nickel-titanium alloy tube as a whole to be formed by laser cutting, and the nickel-titanium alloy tube used has antimagnetic properties and does not affect nuclear magnetic resonance imaging. Recovery hook 1 is used for recovery of filter. Connecting part 12 is arranged on the below of recovery hook 1, and connecting part is provided with the part that is connected with pushing de...

Embodiment 3

[0057] Such as figure 1 As shown, the vena cava filter involved in the present invention can be placed at the position of the inferior vena cava 7 between the renal vein 9 and the iliac vein 8 through an interventional method to prevent thrombus from the lower extremities from ascending into the lungs and causing pulmonary embolism. Such as Figure 4 As shown, we adopt a single-layer filter design, which has excellent mechanical stability, is not easy to break and fall apart, and maintains its structural integrity. Such as figure 2 As shown, the vena cava filter of the present invention adopts a nickel-titanium alloy tube as a whole to be formed by laser cutting, and the nickel-titanium alloy tube used has antimagnetic properties and does not affect nuclear magnetic resonance imaging. Recovery hook 1 is used for recovery of filter. Connecting part 12 is arranged on the below of recovery hook 1, and connecting part is provided with the part that is connected with pushing de...

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Abstract

An inferior vena cava filter includes a recovery hook (1), a connecting part (12) and a plurality of support rods. The connecting part (12) is arranged under the recovery hook (1), and a part connected with the pushing device is arranged inside the connecting part. A plurality of first support rods (4) are separated from the lower part of the connecting part (12), and a second support rod (2) and two third support rods (5) are separated from the far end of the first support rods (4) . A part of the distal end of the second support rod (2) is bent upwards or downwards to form a hook shape. The third support rod (5) continues to stretch downwards, and the two third support rods (5) separated from the first support rod (4) are in an inner arc when unfolded, and the adjacent two first support rods ( 4) The lower ends of the separated adjacent two third support rods (5) move closer together. When unfolding, each supporting rod is opened to form a filter net as a whole.

Description

technical field [0001] The invention relates to a medical device, in particular to a retrievable inferior vena cava filter with good thrombus filtering effect, stable fixation, prolonged implantation time. Background technique [0002] Lower extremity deep vein thrombosis (Deep Vein Thrombosis, DVT) is a common clinical disease, and its incidence is increasing year by year. Incidence factors include obesity, history of venous thrombosis, varicose veins, abnormal coagulation mechanism, diabetes, oral contraceptives, trauma, childbirth, etc., all of which are related to slow blood flow, increased blood viscosity and damaged vascular intima. The most serious complication of DVT is pulmonary embolism (Pulmonary Embolism, PE) caused by thrombus shedding. PE has a sudden onset and rapid progression. Generally, patients with pulmonary thromboembolism die within the first hour of onset. In addition, post-PE syndrome (such as chest tightness, shortness of breath, aggravation during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/01
CPCA61F2/01A61F2002/018A61F2230/0063A61F2230/005A61F2230/0067A61F2230/0071A61F2/0105A61F2/011A61F2002/016
Inventor 陈奕龙黄伟赵向前
Owner SHENZHEN KYD BIOMEDICAL TECH CO LTD
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