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Filter device

A filter and filter structure technology, applied in the field of medical devices, can solve problems such as endangering the life safety of patients, cracks in filter devices, blood vessel blockage, etc., and achieve the effect of reducing the risk of cracks or fractures piercing blood vessels

Active Publication Date: 2017-03-15
SHANGHAI BLUEVASCULAR MEDTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a filter device to solve the problem that after the existing filter device is implanted into the human body, if the filter device is not recovered, the filter device remaining in the human body will appear cracks or break and puncture blood vessels, and thrombus will accumulate for a long time and cause blood vessel blockage. Phenomena that seriously endanger the life safety of patients

Method used

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Embodiment Construction

[0026] The filter device proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0027] The core idea of ​​this application is as follows: the technical solution of this application designs the filter structure in the filter structure. After thrombolytic treatment, the top of the filter structure is released by external stimulation or biodegradation, and the filter structure after release is tight. Adhere to the blood vessel wall or completely degrade to avoid the blocking of the blood flow by the filter structure of the filter device remaining in the human body w...

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Abstract

The invention provides a filter device. The filter device includes a supporting structure and a filtering structure. The filtering structure includes a plurality of support rods; the support rods are self-elastic support rods or self-degradation support rods; first ends of all the support rods are connected together, and second ends of all the support rods are connected to the supporting structure; and the self-degradation support rods are made of a shape memory material, and the self-degradation support rods are made of a biodegradable material. The filtering structure formed by the self-elastic support rods or the self-degradation support rods is used to filter thrombus, the filtering structure is released through an external excitation or biodegradation manner after thrombolytic therapy is completed, the released filtering structure is tightly attached to a wall of a blood vessel or completely degrades, and then blocking of blood due to the filtering structure of the filter device in a human body can be avoided, and the risk that the blood vessel is pierced due to cracks or fracture of the filter device can be lowered.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a filter device. Background technique [0002] According to the survey, the number of patients who die of pulmonary embolism (Pulmonary Embolism, PE) in the United States is 10,000 to 30,000 every year, which exceeds the sum of deaths from breast cancer and AIDS, and is the third largest disease in the United States. Based on this, the American Association of Orthopedic Surgeons proposed that preventive treatment measures for pulmonary embolism should be taken in patients before surgery. Usually, preventive treatment measures for pulmonary embolism include the use of chemical drugs such as aspirin, low-molecular-weight heparin, and warfarin, mechanical rehabilitation preventive devices, or implanted filters. The above-mentioned treatment methods have achieved obvious effects in the preventive treatment of pulmonary embolism, but there are still some significant probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/01A61L31/06A61L31/02
CPCA61F2/0105
Inventor 李中华张琳琳韩建超祁勇翔丁双喜苗铮华
Owner SHANGHAI BLUEVASCULAR MEDTECH CO LTD