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Hemostatic clip made from absorbable magnesium-based composite material and preparation method of hemostatic clip

A composite material and hemostatic clip technology, used in wound clips, medical science, surgery, etc., can solve the problems of poor forming performance and high cost, and achieve the effect of improving strength and toughness, good effect, and excellent physical and mechanical properties.

Inactive Publication Date: 2014-01-01
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Polydioxanone (PPDO), in addition to its excellent biodegradability, also has excellent physical and mechanical properties, but its cost is high and its formability is poor

Method used

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  • Hemostatic clip made from absorbable magnesium-based composite material and preparation method of hemostatic clip

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Experimental program
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Embodiment

[0018] An absorbable magnesium-based composite material hemostatic clip, as shown in the attached figure, adopts absorbable magnesium-based composite material to prepare the hemostatic clip body, the shape of the hemostatic clip body is V-shaped, and the top angle of the V-shaped clip is 130 degrees and two The angle between the adjacent sides of the hemostatic clip is 150 degrees. The cross-sectional shape of the hemostatic clip is rectangular, and the length and width are 1.0 mm and 0.7 mm. There are horizontal stripes with a width of 0.2 mm and a spacing of 1.7 mm on the inside of the hemostatic clip.

[0019] The preparation method of the absorbable magnesium-based composite material hemostatic clip is prepared by using absorbable magnesium-based composite material rods, including wire drawing of the magnesium-based composite material rods, cutting horizontal grains and molding, annealing treatment, and cleaning. The steps are as follows:

[0020] 1) Prepare a magnesium-bas...

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Abstract

The invention relates to a hemostatic clip made from an absorbable magnesium-based composite material. The absorbable magnesium-based composite material is adopted to prepare a hemostatic clip body which is in a V shape, the top included angle and an included angle formed by adjacent edges of two folding edges are both obtuse angles less than 180 degrees, the cross section of the hemostatic clip is a rectangular shape with 0.9-1.1mm in length and 0.65-0.75 in width, and cross grains with width of 0.2mm and distance of 1.7mm are formed at the inner side of the hemostatic clip. The preparation method of the hemostatic clip comprises the steps of drawing an absorbable magnesium-based composite material rod used as a preparation material, cutting cross grains, forming, performing annealing treatment and washing. The hemostatic clip has the advantages that the hemostatic clip made from the absorbable magnesium-based composite material has excellent biological degradability and physical and mechanical properties, can be shaped easily and has low preparation cost, the toughness of magnesium alloy can be effectively improved and the fracture phenomenon can be greatly reduced due to the addition of HA (Hydroxyapatite) or beta-TCP (Tertiary Calcium Phosphate), and the hemostatic clip has good effect in minimally invasive surgery of abdominal cavity in department of surgery.

Description

technical field [0001] The invention belongs to the field of biomedical materials, and relates to an absorbable magnesium-based composite material hemostatic clip and a preparation method thereof. Background technique [0002] The so-called laparoscopic surgery, also known as "keyhole" surgery, is an operation completed by doctors using laparoscopic system technology combined with advanced electronic, optical and other equipment principles. Unlike traditional laparotomy, laparoscopic surgery is performed in a closed abdominal cavity. Under the illumination of a good cold light source, the camera system is connected to the laparoscope body in the abdominal cavity to capture the viscera in the abdominal cavity on the monitoring screen, and the surgeon operates the surgical instruments outside the abdominal cavity under the monitoring and guidance of the high-tech display screen , to perform operations such as exploration, electrocoagulation, hemostasis, tissue separation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L17/06A61B17/122
Inventor 刘德宝陈民芳宋融
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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