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Medical osteotome for mandible plastic surgery and preparation method thereof

A technology for plastic surgery and mandibles, applied in martensitic stainless steel materials and their applications, preparation of medical instruments for surgical operations, stainless steel materials and their application fields, can solve the problem of easy curling of the knife edge, low service life, and affecting the smoothness of the incision In order to achieve the effect of not easy to roll the blade, good toughness, and increase the number of effective uses

Inactive Publication Date: 2017-04-19
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common failure mode of the orthopedic osteotome is curling of the cutting edge of the osteotome, such as figure 1 As shown, it affects the flatness of the cut
The edge of the traditional mandibular plastic surgery knife is easy to roll, and the service life is not long

Method used

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  • Medical osteotome for mandible plastic surgery and preparation method thereof
  • Medical osteotome for mandible plastic surgery and preparation method thereof
  • Medical osteotome for mandible plastic surgery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] In this embodiment, see Figure 2~5 , A method for preparing a medical orthopedic knife includes the following steps:

[0038] a. Use a nitrogen-containing martensitic stainless steel plate with a thickness of 5mm as the processing material. The main chemical composition of the nitrogen-containing martensitic stainless steel material in terms of mass percentage is: C: 0.20%; Cr: 12%; Si: 0.2% Mn: 0.5%; Ni: 0.3%; Mo: 0.5%; N: 0.2%; the rest is Fe and a small amount of inevitable impurity elements;

[0039] b. The nitrogen-containing martensitic stainless steel material used in step a is processed into a medical plastic bone knife blank with a set model and a set size through the processing procedures of wire cutting, grinding, and cleaning, and the cutter head is straight Flat blade with set machining allowance;

[0040] c. The bone knife blank prepared in step b is heated to 1010°C for 40 minutes for austenitizing heat treatment. After the austenitizing heat treatment, the b...

Embodiment 2

[0048] This embodiment is basically the same as the first embodiment, and the special features are:

[0049] In this embodiment, a method for preparing a medical orthopedic knife includes the following steps:

[0050] a. Using nitrogen-containing martensitic stainless steel with a thickness of 5mm as the processing material, the main chemical composition of the nitrogen-containing martensitic stainless steel material in terms of mass percentage is: C: 0.40%; Cr: 12%; Si: 0.2% Mn: 0.5%; Ni: 0.3%; Mo: 0.5%; N: 0.2%; the rest is Fe and a small amount of inevitable impurity elements;

[0051] b. The nitrogen-containing martensitic stainless steel material used in step a is processed into a medical plastic bone knife blank with a set model and a set size through the processing procedures of wire cutting, grinding, and cleaning, and the cutter head is straight Flat blade with set machining allowance;

[0052] c. The bone knife blank prepared in step b is heated to 1000°C for 60 minutes for...

Embodiment 3

[0059] This embodiment is basically the same as the above embodiment, and the special features are:

[0060] In this embodiment, a method for preparing a medical orthopedic knife includes the following steps:

[0061] a. The nitrogen-containing martensitic stainless steel plate with a thickness of 5mm is used as the processing material. The main chemical composition of the nitrogen-containing martensitic stainless steel material according to the mass percentage is: C: 0.55%; Cr: 20%; Si: 0.8% Mn: 1.5%; Ni: 1.0%; Mo: 1.5%; N: 0.5%; the rest is Fe and a small amount of inevitable impurity elements;

[0062] b. The nitrogen-containing martensitic stainless steel material used in step a is processed into a medical plastic bone knife blank with a set model and a set size through the processing procedures of wire cutting, grinding, and cleaning, and the cutter head is straight Flat blade with set machining allowance;

[0063] c. Heat the bone knife blank prepared in step b to 1050°C for 30...

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Abstract

The invention discloses a medical osteotome for mandible plastic surgery and a preparation method thereof. The medical osteotome comprises the following material components: 0.20% to 0.55% of C, 12% to 20% of Cr, 0.2% to 0.8% of Si, 0.5% to 1.5% of Mn, 0.3% to 1.0% of Ni, 0.5% to 1.5% of Mo, 0.2% to 0.5% of N, Fe and a small amount of impurity elements. The preparation method comprises the steps of heating a roughly machined osteotome blank to 1000 DEG C to 1050 DEG C for austenitizing; then, carrying out cryogenic treatment on the osteotome at the temperature of minus 60 DEG C to minus 130 DEG C; then, carrying out tempering on the osteotome at the temperature of 150 DEG C to 200 DEG C two times, wherein tempering is carried out for not less than 2 hours each time; then, air cooling the osteotome to the room temperature; and carrying out finish machining treatment on the osteotome blank to obtain a final finished product. The osteotome is applicable to mandible plastic surgery and has relatively high hardness and toughness, the edge of the osteotome is not liable to curl during the surgery, the service life of the osteotome is greatly prolonged, and safety and reliability of the surgery are guaranteed.

Description

Technical field [0001] The invention relates to a stainless steel material and its application, in particular to a martensitic stainless steel material and its application, and also relates to a method for preparing surgical medical equipment, which is applied to the technical field of plastic medical materials and medical equipment preparation. Background technique [0002] Mandibular angle hypertrophy is caused by the over-protrusion or valgus of the mandibular angle. It is also called "square jaw deformity". In the east, bony hypertrophy is the main cause, affecting appearance. With the continuous improvement of people's quality of life, mandibular plastic surgery has become one of the most common cosmetic surgery. According to incomplete statistics, there are 60,000 to 70,000 facial contour cosmetic surgeries carried out nationwide each year, and they are on the rise. [0003] Facial contour cosmetic surgery belongs to four types of medical cosmetic surgery with higher difficu...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C38/04C22C38/02C21D6/04C21D9/18
CPCC22C38/44C21D6/004C21D6/04C21D9/18C21D2211/008C22C38/001C22C38/02C22C38/04
Inventor 闵永安张艳君
Owner SHANGHAI UNIV
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