CZ17408U1 - Metallic implant - Google Patents

Description

(54) Utility model name:

Metal implant

CZ 17408 Ul

Metal implant

Technical field

The technical solution of the metal implant concerns the field of bone surgery - implantology in medicine. It solves the extension of the indication possibilities and accelerates the surface treatment of the patients by implants made of metal materials in connection with the replacement of own organs and body parts. BACKGROUND OF THE INVENTION

At present, many shapes and types of metal implants are known from the literature and company materials.

The implants are surgically inserted into the bone and are intended, for example, for dental implants for single-phase or two-phase dental roots substitution for single-tooth replacements, unilaterally or bilaterally shortened dental arches, supplementation of long fixed bridge pillars and partial or total removable dentures.

Two of the important parameters for dental implants, for example, are its strength and surface properties. The implant must withstand chewing forces of up to 1500N for an indefinite lifetime while meeting the conditions of biocompatibility, cytotoxicity, sufficient anchoring surface size, and appropriate surface treatment for rapid osteointegration. Dental implants of technically pure titanium are known which meet the requirements of biocompatibility, are neither toxic nor allergenic, have a low elastic limit, but at the same time a low strength and yield strength, so that they are unsatisfactory for full dentition load.

Commonly used titanium alloy implants exhibit good strength properties, but these alloys contain toxic or potentially toxic or allergen-like elements such as aluminum, vanadium, nickel, and chromium, and thus cease to meet the increasing demands of medicine.

Most metal implants are provided with a special surface treatment by applying other material to the implant surface or by mechanical and subsequently chemical processes to achieve good surface biological and chemical properties. Application of other material to the surface may, due to mechanical non-chemical holding, cause the layer to crack or peel after a period of exposure. In mechanical processing, for example sanding, foreign material may be introduced into the patient's wound and cause difficulty in the subsequent use of the implant.

There is currently no information on the existence or use of a dental implant, for example below 2.5 mm in diameter, whose surface is free from potentially allergic and cytotoxic elements and meets its high strength, chemical purity, biocompatibility, osteointegration, wettability and higher tissue cell adherence than the implant of the present invention.

The essence of the technical solution

The essence of the technical solution of the metal implant is to eliminate possible deficiencies in the treatment of the implant surface and to improve the biological properties of the surface. The technical solution consists in exposing the surface structure of the titanium metal implant by surface treatment. After this treatment, the metal implant is characterized by at least 98% purity of the material and by its surface structure, which is characterized by more than 10% content of structural particles (grains) of the base material of 1 to 500 nanometers (ηιη). roughness) than pure titanium. The surface after treatment is more wettable, does not contain other elements in an amount greater than 2 wt. % and shows higher cell adhesion and cell growth rate.

The implantable part A of the metal implant is provided with a surface treatment, which is formed, for example, by the oxidative action of an aqueous solution of hydrofluoric acid, possibly with the addition of nitric acid in a ratio of 20: 30% by volume.

UL etching solution. A suitable exposure time of the metal implant in acids of, for example, 10 minutes and at a concentration of 30% can expose the nanostructure, which is enhanced by etching surface intercrystalline oxides of the metal nanotitanium in the segregation zones of titanium. This does not contaminate or damage the integrity of the coating and the original purity of 98% titanium is maintained. Surface roughness is increased by surface treatment.

The implantable part of the metal implant usable for dental restorations is conical, provided with a thread which terminates the implantable part with a cylindrical surface adjoining the gingival throat. Above the neck there is a hexagon which passes into the conical superstructure with internal thread. The metal implant is surgically inserted into a pre-prepared wound in the bone to a depth that is generally equal to the length of the intraosseous portion of the metal implant. It is screwed so that the gingival throat is at the height of the gingiva. After the metal implant has settled, the process of healing is called “osteointegration”. The higher the rate of osteointegration, the faster the patient can be treated, for example, by prosthetic work.

The surface properties of the implant influence the adherence of cell mediator proteins (signaling molecules), which positively influence the rate of bone healing in the proposed metal implant. By combining the material properties with the implant surface treatment methodology, at least 30% higher cell proliferation and surface colonization values are achieved in the first 72 hours after implantation than commercially pure titanium.

Example of technical solution

An exemplary embodiment of a metallic implant is described in Fig. 1, which consists of a conical implantable part A provided with a thread 1 and a groove 2 which passes into a cylindrical part 3. B is a conical gingival neck of the implant followed by a hexagon 4 Part A is coated to allow new bone to be formed more quickly and easily. The neck B has a metallic shiny surface. C is the surface after machining without modification.

The implantable part A of the metal implant is coated over the entire surface. When inserting the metal implant into the bone, it is grasped by the hexagon 4 and screwed in the bone clockwise into the pre-cut wound to the gingival throat B.

After implant implantation by screwing, an osteointegration (healing) process occurs in the bone in which the implantable part A is surrounded by a newly forming bone K.

Claims (2)

PROTECTION REQUIREMENTS A metal implant is constituted by at least one implantable coated part (A), characterized in that its surface structure comprises at least 10% of structural particles (grains) of less than 500 nanometers (ηπι). Metal implant according to claim 1, characterized in that its surface structure contains at least 98% of Ti (Ti) structural particles (grains).