RU183993U1 - Screw for introducing an ultrasonic waveguide - Google Patents

Abstract

The utility model relates to medicine, namely to traumatology and orthopedics, and can be used in a complex of surgical and conservative treatment of long tubular fractures. A screw for introducing an ultrasonic waveguide is a rod that consists of a series of connected first threadless, threaded, second threadless sections, hats with holes. There is a through hole inside the shaft. A screw for introducing an ultrasonic waveguide serves for prolonged contact stimulating ultrasonic action on the bone, acting as a conductor of ultrasound in the bone and soft tissues.

Description

The proposed utility model relates to medicine, namely to traumatology and orthopedics, and can be used in the complex of surgical treatment of metaphysial and metadiaphysical fractures of long tubular bones.

Known rod-screw for external fixation device [US Pat. No. 143507 Russian Federation IPC А61В 17/56. / Reznik L.B., Rozhkov K.Yu., Novikov A.A., Lebedeva D.A .; Applicant and patent holder: Omsk State Medical Academy. - No. 2014109497/14; declared 03/13/2014; publ. 07/27/2014] which is intended for the repair and stabilization of bone fragments in the apparatus of external fixation and contact ultrasound exposure [Pat No. 2601858 of the Russian Federation “Method for the activation of reparative osteogenesis" / Novikov AA, Reznik LB, Rozhkov K.Yu., Negrov D.V., Lebedeva D.A .; No. 20144150743; declared 06/23. 2015, publ. 10/14/2016]. The screw rod is made in accordance with the intended use. Its main drawback - the screw-rod serves for prolonged ultrasound exposure to the bone only in conditions of extrafocal transosseous osteosynthesis and is not adapted for use in immersion osteosynthesis.

The screw rod for the external fixation apparatus (Pat. No. 143507 Russian Federation IPC АВВ 17/56. No. 2014109497/14) is taken as a prototype, as the closest in technical essence to the proposed one.

The described prototype is close in technical essence, but does not provide the possibility of contact low-frequency ultrasonic treatment in conditions of osteosynthesis with a plate, or treatment of a fracture by conservative methods (gypsum immobilization, skeletal traction) due to the fact that it is not possible to fix it without an external fixation device.

The technical result of the invention is the expansion of the possibilities of contact low-frequency ultrasound exposure of the bone in order to stimulate osteogenesis, in connection with the possibility of use in conditions of bone osteosynthesis and in the conservative treatment of fractures.

The specified technical result is achieved by the fact that a screw is used to introduce an ultrasonic waveguide, which is a hollow rod from a cylindrical threadless, cylindrical threaded, again cylindrical threadless sections, and a cap with holes.

An ultrasonic waveguide-screw consists of (see Fig. 1):

1. Hat

2. Through hole

3. Holes for suture to fix to the skin

4. The second threadless section

5. Threaded section

6. The first threadless section

The device consists of a cylindrical threadless (6) (portion extending in the cancellous bone), cylindrical threadless (for fixation in the cortical bone layer) (5), again cylindrical threadless (4) (portion passing through the soft tissue) sections, and caps (1) with holes (3) (for fixing on the skin). A through hole (2) passes in the center of the screw for introducing the waveguide.

The enlarged thread diameter of the ultrasonic screw waveguide (from M6 to M8) ensures its reliable fixation in the spongy part of the metaepiphyseal bone section. The presence of a cap with holes for suture material ensures its fixation on the skin surface, which, along with the absence of a second threaded portion (which rises 40-60 mm above the skin surface of the prototype for fixation in the Ilizarov apparatus) allows it to be used to stimulate osteogenesis during

bone osteosynthesis and conservative treatment of fractures without causing inconvenience to the patient.

The device is used as follows. After performing osteosynthesis (extramedullary, extrafocal transosseous) or stabilization of the fracture by conservative methods (gypsum, skeletal traction), a screw is inserted at a distance of 30 mm from the fracture site of the meta-, metadiaphyseal part of the bone to insert an ultrasound waveguide by screwing it into a pre-drilled drill with a diameter of 6, 5 mm hole. In this case, the first threadless section (6) has a diameter equal to the diameter of the drill (6.5 mm) and freely passes into the spongy bone. The threaded section (5) has an M8 thread and serves to fix the waveguide in the cortical bone layer. The second threadless section (4) has a diameter of 6.5 mm and passes through soft tissue. The screw cap (1) is located on the surface of the skin and is fixed to it with interrupted sutures through 4 holes (3). In the through hole (2) of the tube for the introduction of an ultrasonic waveguide (whose diameter is 4.5 mm), a waveguide of the ultrasonic apparatus is introduced for contact, stimulating osteogenesis, impact on the bone.

Thus, the proposed utility model - a screw for introducing an ultrasonic waveguide, acting as a conductor of ultrasound inside the bone and soft tissues, allows to stimulate osteogenesis of the fracture zone by means of contact low-frequency ultrasound irrespective of whether a conservative or surgical method of treatment is used.

Claims (1)

A screw for introducing an ultrasonic waveguide, which is a hollow rod, comprising a connected cylindrical threadless section, a threaded section and a cap with a hole, characterized in that the first cylindrical threadless, cylindrical threaded, the second cylindrical threadless and cap are connected in series, while the cap has additional holes for fixing on the skin, its hole is made with the possibility of introducing a waveguide, and the threaded section has a M8 thread.

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