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Absorbable suture nail for anastomat

A stapler and staple technology, which is applied in the field of absorbable staples for staplers, can solve the problem that acid resistance or alkali corrosion resistance of absorbable staples cannot be guaranteed, and achieves the effect of improving corrosion resistance and good corrosion resistance.

Inactive Publication Date: 2013-02-06
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the U-shaped body of the magnesium alloy wire can be completely degraded and absorbed, its surface coating technology scheme cannot guarantee that the absorbable staples can be completely degraded and absorbed in the internal environment and have the necessary properties in the early postoperative stage. Acid or alkali corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An absorbable staple for a stapler, a staple body with a U-shaped structure processed from medical degradable AZ31B magnesium alloy wire, and a bottom layer of degradable magnesium oxide ceramic film attached to the surface of the magnesium alloy wire for hole sealing Composed of degradable polylactic acid surface layer, the diameter of the magnesium alloy wire is φ0.30mm, the thickness of the bottom layer of the magnesium oxide ceramic film is about 10 μm, and the thickness of the degradable polylactic acid surface layer is about 10 μm.

[0042] The preparation steps of the absorbable staples for the stapler are as follows:

[0043] 1) Firstly, the AZ31B magnesium alloy is drawn and processed into a magnesium alloy wire with a diameter of φ0.30mm;

[0044] 2) Use 10g / L sodium silicate and 2g / L NaOH as the micro-arc oxidation electrolyte system, immerse the magnesium alloy wire in it, apply a voltage of 400V, and perform micro-arc oxidation treatment for 10 minutes to m...

Embodiment 2

[0049] An absorbable staple for a stapler, a staple body with a U-shaped structure processed from medical degradable AZ91 magnesium alloy wire, and a bottom layer of a composite ceramic film of degradable magnesium oxide and hydroxyapatite attached to the surface of the magnesium alloy wire , Degradable polylactic acid surface layer for sealing treatment, the diameter of the magnesium alloy wire is φ0.20mm, the thickness of the bottom layer of the magnesium oxide and hydroxyapatite composite ceramic film is about 5μm, and the thickness of the degradable polylactic acid surface layer about 5 μm.

[0050] The preparation steps of the absorbable staples for the stapler are as follows:

[0051] 1) First, AZ91 magnesium alloy is drawn and processed into a magnesium alloy wire with a diameter of φ0.20mm;

[0052] 2) Use 10g / L sodium silicate, 3g / L hydroxyapatite nanopowder, and 2g / L NaOH as the micro-arc oxidation electrolyte system, immerse the magnesium alloy wire in it, apply a ...

Embodiment 3

[0057] An absorbable staple for a stapler, a staple body with a U-shaped structure processed from medical degradable AZ31B magnesium alloy wire, a degradable hydroxyapatite bioceramic film bottom layer attached to the surface of the magnesium alloy wire, used for The surface layer of the degradable PLGA is sealed, the diameter of the magnesium alloy wire is φ0.25mm, the thickness of the bottom layer of the hydroxyapatite bioceramic film is about 10 μm, and the thickness of the degradable PLGA surface layer is about 20 μm.

[0058] The preparation steps of the absorbable staples for the stapler are as follows:

[0059] 1) First, the AZ31B magnesium alloy is drawn and processed into a magnesium alloy wire with a diameter of φ0.25mm;

[0060] 2) In the electrolyte system containing 6g / L hydroxyapatite nanopowder, use electrodeposition technology to electrodeposit hydroxyapatite bioceramic bottom layer on the surface of magnesium alloy wire;

[0061] 3) Dissolve 10 grams of degra...

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Abstract

The invention relates to an absorbable suture nail for an anastomat. The absorbable suture nail comprises a suture nail body, a degradable biological ceramic thin film bottom layer and a degradable macromolecule surface layer, wherein the suture nail body is made of medical degradable magnesium alloy wire materials, the degradable biological ceramic thin film bottom layer is attached on the surface of the magnesium alloy wire materials, and the degradable macromolecule surface layer is used for sealing holes. By the aid of surface double-layer protection formed by the degradable ceramic coating layer and the macromolecule thin film and hole sealing effect of an organic coating layer to the surface of an inorganic ceramic coating layer, the absorbable suture nail for the anastomat can be improved effectively, degrading speed of the suture nail is controlled, and the suture nail can be degraded and absorbed completely in in-vivo environment. Meanwhile, at early stage of postoperation, the suture nail has indispensable acid-resisting or alkali-resisting corrosive performance so as to resist early corrosion damage in the strong acid environment of the stomach and is applicable to anastomosis and suture after various operations in vivo, particularly alimentary canal operation.

Description

technical field [0001] The present invention is an absorbable staple for a stapler, comprising a staple body processed from a medical degradable magnesium alloy wire, a degradable bioceramic film bottom layer attached to the surface of the magnesium alloy wire, and a degradable staple for hole sealing treatment. Composed of polymer surface layer, it can be completely degraded and absorbed in the internal environment. At the same time, it has the necessary acid or alkali corrosion resistance in the early stage after surgery, and can resist the early corrosion damage of the strong acid environment in the stomach. It is suitable for the human body. The utility model is used for anastomosis and suturing of wounds after various operations, especially digestive tract operations, and belongs to the technical field of surgical anastomosis and suturing instruments. Background technique [0002] The anastomotic (suture) stapler is a tool used by doctors to replace the traditional manu...

Claims

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Application Information

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IPC IPC(8): A61L31/10A61L31/08A61B17/064
CPCA61B17/064A61L31/088A61L31/10A61L31/148A61L31/022A61B17/11A61B17/1114A61B2017/00004
Inventor 储成林薛烽白晶施超王世栋
Owner SOUTHEAST UNIV
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