Degradable and recoverable 4D printed linear organic body support and its use method

A technology of human body and degradable materials, applied in the field of human stents, can solve the problems of secondary stenosis of vascular stents, inability to easily remove them, secondary stenosis of vascular endothelium, etc., and achieve the effects of reducing pain, convenient removal, and wide application value.

Active Publication Date: 2019-07-05
QINGDAO RONGSHANG TIANXIA NETWORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patients implanted with this type of metal vascular stent cannot undergo MRI, which will cause vascular endothelial hyperplasia and secondary stenosis; in addition, vascular stents can usually complete their mission of supporting blood vessels in a few months, and then the blood vessels return to normal and no longer Vascular stents are needed, so patients implanted with non-degradable vascular stents will face the risk of secondary stenosis. Once secondary stenosis occurs, they must accept the pain of heart bypass
Chinese patent 200820006963.2 discloses a tubular vascular stent composed of a catheter and an automatic pop-up stent source, and once implanted, it cannot be easily removed in a short period of time

Method used

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  • Degradable and recoverable 4D printed linear organic body support and its use method
  • Degradable and recoverable 4D printed linear organic body support and its use method
  • Degradable and recoverable 4D printed linear organic body support and its use method

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Embodiment 1

[0050] The invention provides a human body support, such as figure 2 As shown, it includes: a spiral portion 9, a mounting ring 3 and a drop-shaped protrusion 5; wherein, the mounting ring 3 is arranged at one end of the spiral portion 9, and the mounting ring 3 is provided with a fixing hole 4; the drop-shaped protrusion 5 Set at the other end of the helical part 9; the helical part 9 includes several helical units connected in sequence, and each helical unit includes a helical circumferential unit 1 and 4 supporting units 2, that is, the number of supporting units 2 on each helical unit There are 4 pieces, and the interval angle between two adjacent support units 2 is 90 degrees. The shape of the axis line is a sine wave.

Embodiment 2

[0052] The invention provides a human body support, such as image 3 As shown, it includes: a spiral portion 9 and a mounting ring 3; wherein, the mounting ring 3 is arranged at both ends of the spiral portion 9, and the mounting ring 3 is provided with a fixing hole 4; the spiral portion 9 includes several spiral units connected in sequence, Each spiral unit includes a spiral circumferential unit 1 and 6 support units 2, that is, the number of support units 2 on each spiral unit is 6, and the interval angle between two adjacent support units 2 is 60 degrees. The support unit 2 The shape is an arched bulge parallel to the axial direction of the human body support, and the direction of two adjacent support units 2 is opposite, and the shape of the axis of the support unit 2 is a sinusoidal waveform.

Embodiment 3

[0054] Such as Figure 4 , Figure 5 For the human body support provided by the present invention, the present invention has specially designed the method of use:

[0055] Specifically, the installation method of the human body stent of the present invention is the same as the installation method of the traditional catheter 8 and guide wire balloon expansion; specifically: (1) use a special needle to puncture the large blood vessel of the arm or thigh; the pinhole is The only wound on the body surface during the operation; (2) Put the guide wire along the needle, and then the needle can withdraw, so as to keep the guide wire in the blood vessel; (3) Put the catheter 8 along the guide wire, and the guide wire guides Catheter 8 enters the coronary artery on the heart; (4) puts into the balloon wrapped in the human body stent along the catheter 8; (5) inflates the balloon, and the expansion of the balloon makes the human body stent deformed and propped up; (6) withdraws the ball...

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Abstract

A degradable and withdrawable 4D printing linear organic human body stent and a using method therefor. The human body stent comprises a spiral part (9) and a mounting ring (3); the mounting ring (3) is at least provided at one end of the spiral part (9), and a fixing hole (4) is provided in the mounting ring (3); the spiral part (9) comprises a plurality of spiral units which are successively connected; each spiral unit comprises a periphery unit (1) and a plurality of supporting units (2); the supporting units (2) are arch-shaped projections which are parallel to the axial direction of the human body stent; the periphery units (1) are spiral. The human body stent can be fixed in a blood vessel under the conditions that the blood vessel is not damaged and an auxiliary fixing device is not added. Moreover, the human body stent can be conveniently taken out within a short time, and can be effectively degraded in a long-term using process without stimulating the wall of the blood vessel.

Description

technical field [0001] The invention relates to the technical field of human body supports, in particular to a degradable and recoverable 4D printed linear organic human body support and its use method. Background technique [0002] According to the data of "China's Health Statistics Summary", there are more than 270 million people with cardiovascular and cerebrovascular diseases in China, and the death toll caused by cardiovascular and cerebrovascular diseases is close to 40% of the total number of deaths in the country. It has become the "number one killer" of Chinese people's health. . The main cause of cardiovascular disease is the deposition of excess fatty substances and calcium on the blood vessel wall to make it thicker, resulting in narrowing or blockage of blood vessels, resulting in difficulty in blood circulation, resulting in angina pectoris, myocardial infarction and even death. Up to now, the main means of combating cardiovascular diseases is to use percutane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/86A61F2/95A61L31/14A61L31/06A61L31/04A61L31/12A61L31/10A61L31/16
CPCA61F2/86A61F2/95A61F2002/9528A61L31/041A61L31/10A61L31/14A61L31/148A61L31/16A61L2300/252A61L2300/42
Inventor 于永臣孙继泽程楷刘缵森
Owner QINGDAO RONGSHANG TIANXIA NETWORK CO LTD
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