RU190696U1 - MEMBER-PHALANGE ENDOPROTESIS OF THE FINGER'S FINGER - Google Patents

Abstract

The utility model is aimed at reducing the time of postoperative healing by eliminating inflammatory processes. The carpal-phalangeal endoprosthesis of the finger of the hand contains distal and proximal articular legs connected by a hinge. legs with a hinge in them are made rounding, the proximal and distal articular legs have the shape of a trapezium, one of the faces of which has rounding, sha It consists of two parts, made in the form of a parallelepiped with roundings, both parts of the hinge are connected by a jumper, the proximal articular leg has a length A equal to 18.0-30.0 mm, the distal articular leg has a length B equal to 14.0-24, 0 mm, the hinge has a height C equal to 9.0-15.0 mm, and the width D equal to 9.0-15.0 mm, the angle between the two parts of the hinge is 30 °.

Description

The invention relates to the field of medicine, specifically to traumatology and orthopedics, and can be used in the treatment of small joints.

Known endoprosthesis containing distal and proximal articular legs, connected by a hinge (RF patent 2577452 from 03.20.2016.) - a prototype.

However, the use of this endoprosthesis gives a long healing period due to complications in the form of inflammatory processes, since the design of the prototype does not correspond to the natural anatomy: the prototype has a constructive disadvantage in the form of abrupt transitions of the leg-head junction, which can destroy the endoprosthesis.

The objective of the proposed metacarpophalangeal endoprosthesis of the finger is to reduce the time of postoperative healing by eliminating inflammatory processes.

The problem is solved by the proposed metacarpophalangeal endoprosthesis of the finger of the hand, having a distal and proximal articular legs, connected by a hinge.

The novelty of the claimed metacarpophalangeal endoprosthesis of the finger of the hand lies in the fact that at the junction of the proximal and distal articular legs with a hinge, roundings are made, the proximal and distal legs are trapezoidal, one of the faces of which is rounding, the hinge consists of two parts , made in the form of a parallelepiped with roundings, both parts of the hinge are connected by a jumper, the proximal articular leg has a length A equal to 18.0-30.0 mm, the distal articular leg has a length B equal to 14.0-24.0 mm, sch nir has a height C of 9,0-15,0 mm, and a width D, equal 9,0-15,0 mm, the angle between the two hinge parts is 30 degrees.

FIG. shows the inventive metacarpophalangeal endoprosthesis of the finger of the hand.

The metacarpophalangeal endoprosthesis of the finger consists of a proximal articular leg 1, a distal articular leg 2, a hinge 3. At the junction of the proximal and distal articular legs 1,2 and hinge 3 in the proximal and distal articular legs are made rounding 4. The proximal and distal articular legs 1.2 have the shape of a trapezoid, one of the faces of which has rounding 5. The hinge 3 consists of two parts, made in the shape of a parallelepiped with rounding 6. Both parts of the hinge 3 are connected by a jumper 7. Proximal articular leg 1 has a length And equal to 18.0-30.0 mm, the distal articular leg 2 has a length B equal to 14.0-24.0 mm, the hinge 3 has a height C equal to 9.0-15.0 mm, and a width D equal to 9.0-15.0 mm. The angle between the two parts of the hinge 3 is 30 °. The endoprosthesis is made of a biocompatible inert silicone elastomer. Due to the elasticity of the material, the endoprosthesis provides bending at the junction of the two parts of the hinge 3.

The proposed metacarpophalangeal endoprosthesis of the finger is used as follows: install the proximal joint leg 1 into the bone canal, then distal joint leg 2, hinge 3 and ligament capsule sew.

The above-described new features of the proposed metacarpophalangeal endoprosthesis of the finger provide a reduction in the postoperative healing time by eliminating inflammatory processes.

All of these new signs are significant, as they allow to obtain a positive clinical result, expressed in the reduction of the postoperative healing time by eliminating inflammatory processes.

The proposed metacarpophalangeal endoprosthesis of the finger is used in 5 patients. Clinical results have shown more effective compensation for the damaged (destroyed) ligamentous apparatus and a reduction in the rehabilitation period (restoration of movement) in the postoperative period by eliminating inflammatory processes.

The endoprosthesis is made of a biocompatible inert silicone elastomer. Due to the elasticity of the material, the endoprosthesis provides bending at the junction of the two parts of the hinge.

Claims (1)

The metacarpophalangeal endoprosthesis of the finger of the hand, which has distal and proximal articular legs, connected by a hinge, characterized in that it is made of a biocompatible inert silicone elastomer. The hinge consists of two parts at the junction of the proximal and distal articular legs with the hinge. , made in the form of a parallelepiped with roundings, both parts of the hinge are connected by a bridge, the proximal articular leg has a length A equal to 18.0-30.0 mm, the distal articular leg has a length B equal to 14.0-24.0 mm, the hinge has a height C equal to 9.0-15.0 mm and a width D equal to 9.0-15.0 mm, the angle between the two parts of the hinge is 30 °.

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