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Fixture for brazing zirconia ceramic/stainless steel fixing tong head of medical anastomat and brazing method

A technology of zirconia ceramics and fixed pliers, which is applied in the direction of manufacturing tools, welding equipment, auxiliary devices, etc., can solve problems such as the production cycle of unwelded holes and brazing, and achieve mass production, high efficiency, and optimized control parameters. Effect

Inactive Publication Date: 2015-05-27
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the brazing interface between the insulating sheet and the metal sheet of the fixed pliers of the medical stapler is prone to unwelded holes and the brazing production cycle is long, and to provide a method for brazing medical jaw tissue anastomosis Zirconia Ceramic / Stainless Steel Fixed Pliers Fixture and Brazing Method

Method used

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  • Fixture for brazing zirconia ceramic/stainless steel fixing tong head of medical anastomat and brazing method
  • Fixture for brazing zirconia ceramic/stainless steel fixing tong head of medical anastomat and brazing method
  • Fixture for brazing zirconia ceramic/stainless steel fixing tong head of medical anastomat and brazing method

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Effect test

specific Embodiment approach 1

[0022] Specific embodiment one: the jig used for brazing medical stapler zirconia ceramics / stainless steel fixed clamp head in this embodiment is composed of graphite base 1, graphite briquetting block 2 and Nb briquetting block 3; the base of the graphite base 1 The body 11 is cylindrical, and a shaft column 12 is arranged on the axis of the base body 11, and a plurality of rectangular grooves 14 are opened radially along the outer edge of the base body 11, and a u-shaped groove is opened below each rectangular groove 14. groove 13, and the opening direction of the u-shaped groove 13 is along the radial direction of the base body 11, and the graphite compact 2 has a through hole on the axis of the cylindrical graphite compact body, and the shaft column 12 of the graphite base 1 passes through the through hole. The Nb pressing block 3 is inserted into the rectangular groove 14 on the base body 11 , wherein the lower surface of the rectangular parallelepiped Nb pressing block 3 ...

specific Embodiment approach 2

[0024] Specific embodiment two: the brazing method of the medical stapler zirconia ceramic / stainless steel fixed forceps in this embodiment is realized according to the following steps:

[0025] 1. According to the size of the zirconia ceramics and stainless steel sheet of the fixed clamp head of the medical stapler, the AgCuTi solder is cut into a U shape;

[0026] 2. Soak the cut AgCuTi solder in a dilute hydrochloric acid solution with a mass concentration of 5% for 1min to 30min, then rinse it with clean water, and then use acetone to treat the AgCuTi solder after rinsing with zirconia ceramics, stainless steel sheets and clean water. Ultrasonic cleaning is carried out on the material, and after cleaning for 15min to 30min, it is dried for later use;

[0027] 3. Place the cleaned zirconia ceramics in the U-shaped groove of the graphite base, and then concentrically stack the cleaned AgCuTi solder and the cleaned stainless steel sheet on the surface of the zirconia ceramics...

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the AgCuTi solder described in step one is composed of Ag with a mass fraction of 60% to 75%, Cu with 15% to 30% and 1% to 10% Ti composition. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a fixture for brazing a zirconia ceramic / stainless steel fixing tong head of a medical anastomat and a brazing method. The invention relates to the fixture for connecting the fixing tong head of the medical jaw-type tissue anastomat, and the brazing method. The fixture and the brazing method aim at solving the problems of high appearance probability of unwelded holes in a brazing interface between an insulation sheet and a metal sheet of the fixing tong head of the medical anastomat, and a long brazing production cycle. The fixture comprises a graphite base, a graphite briquette and Nb briquettes, wherein a plurality of grooves are radially formed in the outer edge of a base body of the graphite base; the Nb briquettes are embedded into the grooves; and the graphite briquette is pressed above and covers the graphite base. The brazing method comprises the steps as follows: I, brazing filler metal cutting, II, cleaning of zirconia ceramic, a stainless steel sheet and AgCuTi brazing filler metal, III, fixture assembly, and IV, controlling of a heating rate and brazing temperature for brazed connection. The metallurgical bonding of the zirconia ceramic and the stainless steel sheet is realized, the unwelded holes do not appear; the brazing production cycle is short; and the realization of mass production is facilitated.

Description

technical field [0001] The invention relates to a jig and a brazing method for connecting a fixed jaw of a medical jaw tissue stapler, in particular to a jig and a connecting method for connecting an insulating sheet and a metal sheet of a fixed jaw of a medical stapler. Background technique [0002] Stapler has a wide range of applications in the medical industry. It is a device used in medicine to replace manual suturing. The main working principle is to use titanium nails to separate or anastomose tissues. Due to its good insulating properties, zirconia ceramics are used as the insulating sheet for fixing the jaws of the front end of the stapler. As a common material in the industry, 304 stainless steel has good electrical conductivity and is used as the metal sheet for fixing the clamp head at the front end of the stapler. [0003] The zirconia ceramic and stainless steel connection joints that fix the clamp head not only have complex shapes, but also have special conne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K3/08B23K1/00
CPCB23K1/008B23K1/19B23K1/206B23K3/087
Inventor 张丽霞雷敏亓钧雷庄献宇冯吉才
Owner HARBIN INST OF TECH