CN213465208U - Bone grinding head - Google Patents

Abstract

The utility model discloses a bone bistrique includes bistrique position, pole portion and connection position in proper order, a serial communication port, bistrique position, pole portion, handle connection position formula structure as an organic whole, the surface at bistrique position is equipped with the ZrNiYN nanocomposite of interface looks for bimetal and is altogether epitaxial coating. The coating has the characteristics of high hardness, high elastic modulus and low friction coefficient. The utility model has the advantages that: the utility model discloses high hardness high abrasion bone bistrique has the heat resistance of very high hardness, better wear resistance and preferred, does not have any harmful component, safety ring protects.

Description

Bone grinding head

Technical Field

The utility model relates to a medical orthopedic surgery utensil especially relates to a bistrique position of high rigidity high abrasion osteotome of coating nanometer composite coating, belongs to medical instrument's technical field.

Background

The bone grinding head is a surgical instrument for grinding human bone tissues and ligaments in an orthopedic operation, and is often used in brain surgery, spinal surgery, otolaryngology, orthopaedics and other types of operations in combination with a bone drill and a bone milling cutter. Meanwhile, the device has the characteristics of strong power, simplicity, easiness in use, flexibility in operation, low vibration, low impact, high safety coefficient and the like.

But simultaneously it has a lot of problems in the use also, and one of the most obvious problem is that the load-bearing capacity is bigger during the use of the bone grinding head, which results in severe wear of the tough part, and the bone mud remained in the grinding head groove is carbonized due to the heat effect during the use of the drill, and the two work together result in that the surface of the grinding head is very easy to become smooth. The bone grinding efficiency is influenced, and the serious potential safety hazard caused by damage to nerves and/or blood vessels due to slipping in the use process of the bone grinding head is also caused. Therefore, the bone grater must be frequently replaced once the toughness of the bone grater is worn, which greatly increases the cost of maintaining hospital equipment and the patient's medical burden.

In terms of improving the working reliability and service life of the grinding tool, the grinding tool used for high-speed grinding should be made of a material with high specific stiffness and specific strength, i.e. the grinding tool should have as light a mass as possible to reduce the centrifugal force while ensuring sufficient stiffness and strength. Through test analysis of a bone grinding head of a certain famous brand abroad, the fact that the surface of the bone grinding head is not coated with a hard coating and the base material components of the bone grinding head are basically close to those of a hard high-speed steel tool is found, although the price is extremely high, the bone grinding head still has poor performance in the using process. The surface of the domestic high-quality cutting tool is mostly coated with a hard wear-resistant coating, and the surface of the medical bone grinding head is coated with a coating with high hardness, high wear resistance and low friction coefficient, so that the problems faced by the medical bone grinding head at present can be effectively solved. Meanwhile, the service life of the bone grinding head is greatly prolonged under the condition that the cost is not greatly increased by the technology, and a great deal of convenience is brought to the operation process of a bone surgeon.

Along with the gradual improvement of the requirements of people on the medical level, the performance of the medical cutting tool also puts forward higher and higher requirements: such as high hardness, good wear resistance, low friction coefficient, low cost, biosafety, and the like. The combination of the grinding tool and the coating in the medical field can greatly improve the service life of the instruments at the present stage and improve the use satisfaction of users. And effectively supports domestic high-value high-performance medical consumable production enterprises with independent intellectual property rights to improve the core competitiveness. Greatly promotes the formation of a domestic high-value medical consumable management pattern with reliable quality, rapid circulation, reasonable price and standard use, and promotes the healthy and orderly development of the industry. Meanwhile, the method makes a special contribution to reducing the burden of the medical expenses of people and further purifying consumable market environment and medical service practice environment.

Disclosure of Invention

The utility model solves the technical problem that: how to improve the hardness, wear resistance and heat resistance of the bone grinding head.

In order to solve the technical problem, the utility model discloses a technical scheme is: the bone grinding head sequentially comprises a grinding head part, a rod part and a connecting part, and is characterized in that the grinding head part, the rod part and the connecting part are of an integrated structure, and the surface of the grinding head part is provided with a ZrNiYN nano composite coherent epitaxial coating with bimetallic interface. The coating has the characteristics of high hardness, high elastic modulus and low friction coefficient.

Preferably, the thickness of the ZrNiYN nano composite coherent epitaxial coating is 2.0 μm.

The crystallization interface phase in the ZrNiYN nano composite coherent epitaxial coating and the nanocrystalline ZrN wrapped by the crystallization interface phase show coherent epitaxial growth, and the coating shows continuous columnar crystals with good crystallinity.

The crystallization interface phase in the ZrNiYN nano composite coherent epitaxial coating consists of Ni and Y.

The ZrNiYN nano composite coherent epitaxial coating is prepared by adopting a multi-target magnetron sputtering instrument.

The utility model has the advantages that: the utility model discloses high hardness high abrasion bone bistrique has the heat resistance of very high hardness, better wear resistance and preferred, does not have any harmful component, safety ring protects.

Drawings

Fig. 1 is a schematic structural view of the bone grinding head provided by the present invention.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1, for the utility model provides a pair of bone bistrique includes bistrique position 1, pole portion 2 and connection position 3 in proper order, 3 formula structures as an organic whole in bistrique position 1, pole portion 2, handle connection position, bistrique position 1's surface is equipped with the ZrNiYN nanometer composite coherent epitaxial coating that the interface looks is bimetal. The thickness of the ZrNiYN nano composite coherent epitaxial coating is 2.0 mu m. The coating is prepared on a multi-target magnetron sputtering instrument by adopting a reactive sputtering method, and the method comprises the following steps:

cleaning the substrate;

the matrix used was: high speed steel or titanium alloys;

firstly, sending a substrate subjected to mirror polishing treatment into an M308457 ultrasonic cleaning machine, and cleaning for 5-10 min in analytically pure absolute alcohol and acetone by using 15-30 kHz ultrasonic waves;

then carrying out ion cleaning, namely filling the matrix into a vacuum chamber, vacuumizing to 6 x 10 < -4 > Pa, introducing Ar gas, and maintaining the vacuum degree at 2-4 Pa; the substrate was subjected to ion bombardment with medium frequency for 30 min.

Adopting a ZrNiY composite target material with the diameter of 75 mm;

ar gas flow rate: 38sccm, N₂Gas flow rate: 5 sccm;

sputtering a ZrNiYN layer with a power radio frequency of 130W for 2 h;

the target base distance is 5cm, and the total air pressure range is 0.4 Pa.

The background vacuum of the vacuum chamber is better than 3 multiplied by 10^-3Pa。

In the ZrNiY composite target material, calculated according to the atomic ratio, Zr is always kept at 80%, and the diameter of the ZrNiY composite target material is 75 mm; the total atomic weight of Ni and Y is 20%, and the ZrNiYN nano composite coherent epitaxial coating with high hardness, high elastic modulus and high bonding strength is obtained by changing different atomic proportions of Ni and Y in the target material to prepare the nano composite coating with performance gradient change.

The finally obtained ZrNiYN NANO composite coherent epitaxial coating with the ultrahigh hardness and the high bonding strength interface phase being bimetal has the hardness of 36.5GPa and the elastic modulus of 397.7GPa which are detected by a NANO Indenter G200 type NANO Indenter.

The utility model provides a high hardness high wear-resisting bone bistrique has the cohesion of the hardness of superelevation, better wear resistance and preferred.

Claims (2)

1. The utility model provides a bone bistrique, includes bistrique position (1), pole portion (2) and connection site (3) in proper order, its characterized in that, bistrique position (1), pole portion (2), handle connection site (3) formula structure as an organic whole, the surface of bistrique position (1) is equipped with ZrNiYN nanometer composite coherent epitaxial coating that the interface looks is bimetal.

2. The bone grater according to claim 1, wherein the ZrNiYN nanocomposite coherent epitaxial coating has a thickness of 2.0 μm.

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