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Material for making tendon anastomat, tendon anastomat made of material and making method

A stapler and tendon technology, applied in the field of bioabsorbable flexible materials, can solve the problems of complex surgical procedures, difficult operations, and difficult operations, and achieve the effects of improving surgical efficiency, avoiding tendon adhesion, and reducing pain.

Inactive Publication Date: 2012-10-24
广州医学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned tendon suturing techniques all use surgical thread to suture the injured tendon. There are some problems in the operation: first, the operation is difficult and the operation efficiency is low; Generally, it must be fixed for three weeks before moving; third, tendon adhesions are prone to occur at the suture site, and about 10-20% of patients have to perform tendon release surgery, which brings secondary trauma to patients
Utility model patent Utility model patent 201020512296.2 (Zhang Jianping, tendon closure device, 2010.8) discloses a tendon closure device, which uses two fixation needles to close the tendon end through a connecting rod, and overcomes the deficiency that the tendon end needs to be drawn and fixed by hand in the existing tendon rupture anastomosis
The disadvantage of the above invention is that it is still necessary to use surgical thread to suture the two ends of the tendon on the stapler during the operation, and the junction of the two sections of the tendon still needs to be sutured continuously. The operation process is more complicated and the operation is more difficult. Adhesion risk
However, tributyl citrate can only be used in containers and packaging materials that come into indirect contact with food, and cannot be used for human implantation

Method used

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  • Material for making tendon anastomat, tendon anastomat made of material and making method
  • Material for making tendon anastomat, tendon anastomat made of material and making method
  • Material for making tendon anastomat, tendon anastomat made of material and making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Raw materials:

[0039] (1) Polylactic acid (molecular weight: 100,000, MI=2g / 10min) 70%;

[0040] (2) Polycaprolactone (molecular weight 20000, MI=50g / 10min) 29.5%;

[0041] (3) Simethicone oil (viscosity 50mm 2 / s) 0.5%.

[0042] 2. Manufacturing method:

[0043] (1) Put the polylactic acid and polycaprolactone resin in a vacuum drying oven for 24 h, and the drying conditions are: set temperature 60°C, vacuum degree -0.05 Mpa;

[0044] (2) Proportion the raw materials according to the mass percentage, and then pre-mix evenly to obtain the pre-mixture;

[0045] (3) Melt and blend the premix with a twin-screw extruder. The temperature of each section of the extruder from the barrel to the head is 100, 150, 160, 180, 180, and 175°C, and the screw speed is 100rpm;

[0046] (4) Put the above extruded and granulated materials in a vacuum drying oven to dry for 4~6 h at a temperature of 60°C and a vacuum of -0.05 MPa;

[0047] (5) Use an injection molding machine to...

Embodiment 2

[0050] 1. Raw materials:

[0051] Polylactic acid (molecular weight 80000, MI=5g / 10min) 79%;

[0052] Polycaprolactone (molecular weight 40000, MI=15g / 10min) 20%;

[0053] Simethicone oil (viscosity 100mm 2 / s) 1%.

[0054] 2. Preparation method:

[0055] (1) Put the polylactic acid and polycaprolactone resin in a vacuum drying oven for 24 h, and the drying conditions are: set temperature 60°C, vacuum degree -0.05 Mpa;

[0056] (2) Proportion the raw materials according to the mass percentage, and then pre-mix evenly to obtain the pre-mixture;

[0057] (3) Melt and blend the premix with a twin-screw extruder. The temperature of each section of the extruder from the barrel to the head is 100, 150, 160, 180, 180, and 175°C, and the screw speed is 300rpm;

[0058] (4) Put the above extruded and granulated materials in a vacuum drying oven to dry for 4~6 h at a temperature of 60°C and a vacuum of -0.05 MPa;

[0059] (5) Use an injection molding machine to make a tendon stapl...

Embodiment 3

[0062] 1. Raw materials:

[0063] Polylactic acid (molecular weight 60000, MI=20g / 10min) 78%;

[0064] Polycaprolactone (molecular weight 60000, MI=10g / 10min) 20%;

[0065] Simethicone oil (viscosity 150mm 2 / s) 2%.

[0066] 2. Preparation method:

[0067] (1) Put the polylactic acid and polycaprolactone resin in a vacuum drying oven for 24 h, and the drying conditions are: set temperature 60°C, vacuum degree -0.05 Mpa;

[0068] (2) Proportion the raw materials according to mass percentage, and then pre-mix evenly to obtain a pre-mixture.

[0069] (3) Melt and blend the premix with a twin-screw extruder. The temperature of each section of the extruder from the barrel to the head is 100, 150, 160, 180, 180, and 175°C, and the screw speed is 600rpm.

[0070] (4) Put the extruded and granulated materials above in a vacuum drying oven to dry for 4-6 h at a temperature of 60 °C and a vacuum of -0.05 MPa.

[0071] (5) Use an injection molding machine to make a tendon stapler. ...

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Abstract

Aiming at the defects of the conventional tendon rupture repair process, the invention discloses a material for making a tendon anastomat, the tendon anastomat made of the material and a making method of the tendon anastomat. The material consists of 69 to 90 percent of polylactic acid, 8 to 30 percent of polycaprolactone and 0.5 to 2 percent of silicon oil and is prepared by adopting a melt blending modification technology; and the tendon anastomat is manufactured by adopting an injection molding technology. The invention also discloses the tendon anastomat. When the tendon repair operation is implemented, only the ruptured tendons are butted, the anastomat is wrapped at the joint of the ruptured tendons, the tendons are locked by using a self-locking mechanism, and the tendon repair operation can be completed. The tendon anastomat has the advantages of quick butting, efficient fixation, low tensile stress of tendon fractures, immediate exercise after the operation and the like, and can effectively improve the clinical operation efficiency, reduce the tendon adhesion risk and improve the treatment effect.

Description

technical field [0001] The invention relates to a bioabsorbable flexible material, in particular to a material for making a tendon stapler, a tendon stapler using the material and a manufacturing method of the tendon stapler. Background technique [0002] Tendon rupture is a common clinical trauma. At present, the commonly used techniques for clinical repair of tendon rupture at home and abroad include Bunnell suture, figure-of-eight suture, Kessler suture, Kleinert suture, Koch-Mason suture, Tsuge suture (loop type), Tian Island (Tajima) suture, tendon-bone fixation, braided suture, etc. The above-mentioned tendon suture techniques all use surgical thread to suture the injured tendon, and there are some problems in the operation: first, the operation is difficult and the operation efficiency is low; Generally, it can only be moved after three weeks of immobilization; third, tendon adhesions are prone to occur at the suture site, and about 10-20% of patients have to perfor...

Claims

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Application Information

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IPC IPC(8): A61L31/06A61B17/115
Inventor 陈晓明阳范文
Owner 广州医学院
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