阅读说明：本技术 一种骨折内固定装置 (Internal fixation device for fracture ) 是由 杨冠英 徐长安 高绪国 王舫 于功志 谢韶旺 于 2021-03-10 设计创作，主要内容包括：本发明提供了一种骨折内固定装置,包括固定板,固定板采用钛合金钢板,钛合金钢板的表面喷涂有peek涂层。本发明的骨折内固定装置主要是对钛金属和peek材料的特点扬长避短,具有强度好、耐腐蚀、防粘连的效果,能够杜绝粘连引起的疼痛,并使二次手术取出时更加顺利,减少组织损伤。(The invention provides a fracture internal fixation device, which comprises a fixing plate, wherein the fixing plate is a titanium alloy steel plate, and a peek coating is sprayed on the surface of the titanium alloy steel plate. The fracture internal fixation device disclosed by the invention mainly makes good use of the characteristics of titanium and peek materials, avoids disadvantages, has the effects of good strength, corrosion resistance and adhesion prevention, can be used for completely eradicating pain caused by adhesion, enables the bone to be taken out more smoothly in a secondary operation, and reduces tissue damage.)

1. The utility model provides a fracture internal fixation device, includes the fixed plate, its characterized in that: the fixed plate is made of a titanium alloy steel plate, and a peek coating is sprayed on the surface of the titanium alloy steel plate.

2. The internal fixation device for bone fracture according to claim 1, wherein: the bone nail is arranged on the fixing plate in a penetrating mode and is made of a titanium metal material, and a peek coating is sprayed on the surface of the bone nail.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a fracture internal fixation device.

Background

In internal fracture fixation surgery, a steel plate and bone nails are needed to connect the two ends of the fracture. The device has long clinical application history, definite curative effect and mature process. With the increase of the dosage year by year, the problem that the adhesion of muscles, ligaments and bone tissues is easy to occur is also exposed in the use process, the pain is caused to a patient, and the adhesion needs to be forcedly stripped by a scalpel when being taken out in a secondary operation, so that the tissue is greatly damaged.

Polyether ether ketone (peek) resin is a plastic with high strength and high fracture toughness, and the peek material is gradually used as an artificial bone for clinical application with the advantages of good biocompatibility, mechanical properties close to that of human cortical bone, high temperature resistance, self-lubrication and corrosion resistance, but the peek is difficult to be tightly fused with human tissues like titanium metal in clinical application.

Disclosure of Invention

The invention aims to provide a fracture internal fixation device to solve the problem of tissue adhesion.

In order to achieve the purpose, the invention provides the following technical scheme:

the internal fracture fixing device comprises a fixing plate, wherein the fixing plate is a titanium alloy steel plate, and a peek coating is sprayed on the surface of the titanium alloy steel plate.

Preferably, the fixing plate is provided with a bone nail in a penetrating manner, the bone nail is made of a titanium metal material, and the surface of the bone nail is sprayed with a peek coating.

The invention has the beneficial effects that: the fracture internal fixation device disclosed by the invention mainly makes good use of the characteristics of titanium and peek materials, avoids disadvantages, has the effects of good strength, corrosion resistance and adhesion prevention, can be used for completely eradicating pain caused by adhesion, enables the bone to be taken out more smoothly in a secondary operation, and reduces tissue damage.

Drawings

FIG. 1 is a cross-sectional view of a fixation plate of an internal fracture fixation device;

FIG. 2 is a schematic structural view of a laser spraying apparatus;

FIG. 3 is a schematic structural view of the flame spraying apparatus;

in the figure: the device comprises 1-titanium alloy steel plate, 2-peek coating, 3-spraying box, 4-insulating layer, 5-flame spray lamp, 6-peek powder spraying head, 7-rotating shaft, 8-laser head, 9-X guide rail and 10-Y guide rail.

Detailed Description

The technical solution of the present invention will be described in detail by specific examples.

An internal fixation device for fracture comprises a fixing plate and bone nails arranged on the fixing plate in a penetrating way. As shown in figure 1, the fixing plate is made of a titanium alloy steel plate 1, the surface of the titanium alloy steel plate 1 is sprayed with a peek coating 2, the bone nail is made of a titanium metal material, and the surface of the bone nail is also sprayed with the peek coating.

The titanium has excellent corrosion resistance, the elastic modulus is close to that of natural bones, the biocompatibility is excellent, and the medical-grade peek has the characteristics of high strength and low dissolution property and has good compatibility with human bodies. The fracture internal fixation device of the invention develops advantages and avoids disadvantages of characteristics of titanium and peek materials. The fracture internal fixation steel plate and the bone nail with the peek coating on the surface of the titanium metal and the alloy can be prepared by using surface treatment technologies such as flame high-temperature spraying, laser spraying or 3D printing and spraying.

As shown in fig. 2, the laser spraying process is as follows: firstly, the surface of a titanium alloy steel plate 1 is cleaned, and the titanium alloy steel plate is placed into a spraying box 3 after sand blasting treatment and is fixed on a rotating shaft 7. And (3) turning on a flame blowtorch 5 to heat the temperature in the box to about 380 ℃, starting a peek powder spraying head 6, driving the peek powder spraying head 6 to repeatedly move along an X guide rail 9 and a Y guide rail 10 along with the laser head 8 to form scanning on the surface of the titanium alloy steel plate 1 under the driving of the laser head 8, and simultaneously rotating the steel plate around a rotating shaft 7, so that peek is uniformly coated on the surface of the titanium alloy steel plate 1. And finally, turning off the flame blowtorch 5, slowly cooling to room temperature in a gradient way for 4-8 hours, and taking out. The laser spraying process of the bone nail is the same.

As shown in fig. 3, the flame spraying process is as follows: firstly, cleaning the surface of a titanium alloy steel plate 1, placing the titanium alloy steel plate into a spraying box 3 after sand blasting, opening a flame spray lamp 5 to heat the temperature in the box to 450-600 ℃, then opening a peek powder spraying head 6, and spraying peek powder to the titanium alloy steel plate 1 at a high speed by the powder spraying head under the push of compressed air. And forming a coating of 0.3-0.5 mm on the surface of the titanium alloy steel plate. And finally, turning off the flame blowtorch, slowly cooling to room temperature in a gradient way for 4-8 hours, and taking out. The flame spraying process of the bone nail is the same.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.