RU160622U1 - T-SHAPED OSTEOTOM - Google Patents

Abstract

A T-shaped osteotome containing a body made in the form of a hollow cylinder, on one side of which an evenly pointed apical cutting edge is made from the end side, a control element is made at the opposite end, characterized in that it is equipped with a Kirschner spoke, a cylindrical hollow body is made with an outer diameter no more than 12 mm, with an inner diameter of not more than 7 mm and an overall length of not more than 170 mm, while at the working end the inner diameter is made of no more than three steps, the first step on the element side The board is made with a diameter of not more than 9 mm, the control element is made in the form of a cylinder with a length of not more than 100 mm and is fixed perpendicular to the longitudinal axis of the housing.

Description

The invention relates to medical equipment used in traumatology and orthopedics, in particular to surgical instruments used in the surgical treatment of impression fractures of any location, accompanied by a bone defect in need of osteoplasty.

Known by an osteotome containing a handle and a working part with a plate with an end cutting edge and a limiting rim with a rounded end protruding above the cutting edge, in which the limiting rim and the plate are sickle-shaped, and a longitudinal groove is made in the rim, in which it can be pivotally rotated and fixed a plate is installed, on the side surfaces of which a series of recesses are made for the clamps installed in the side, and the working part and the handle are equipped with a stepped groove with radial slots and you olneny pivotally fixed relative to one another (Patent №2027409 RU. Publ. 27.01.1995 g).

Known bone cutter for the collection of bone tissue with the simultaneous formation of a bone bed for a dental implant, consisting of a cylindrical hollow body, which has 1 or 2 knives with a cutting edge located perpendicular to the longitudinal axis of the cylindrical body and radially to the diameter of the cylindrical body, fixed to the wall in end part; cutting edges of 1 or 2 knives are mutually arranged along the left-side or right-hand rotation of the device; the end part of the cylindrical body has a circumference of a cutting surface parallel to the longitudinal axis of the cylindrical body (Patent No. 139356 RU. Publish. 04/20/2014).

However, the known bone cutter is designed to form a bone bed under the dental implant and has low cutting efficiency when used to take an autograft from the iliac wing crest.

Known osteotome for tubular bone containing a handle that is designed to strike at it, and the working part. The working part is fixed on the handle and has a spike and an elongated restrictive guide plate with a convex part. The convex part of the plate extends beyond the tenon on all sides. The cutting part of the spike is made concave. The spike tip and the end of the bounding guide plate are bent towards each other (Patent No. 2306879RU. Publ. September 27, 2007).

However, the known osteotome is not intended to take a cylindrical autograft from the iliac wing crest.

Known guide element and a device for making holes in the bone, having a hollow body, which forms a pressure chamber and has a distal working hole and an inlet under the guide element. The guide element has a through hole through which the shaft of the working tool, for example, a milling tool, can be passed and inserted into the hollow body. The guide element has a connection for the working medium to establish internal pressure in the pressure chamber or in the hollow body. An inner channel is formed in the guide element, which is closed on all sides and connects the connection to the outlet. An outlet leads into the inlet. The channel passes separately from the through hole along its entire length (Patent No. 2558451 RU. Publish. 08/10/2015).

However, the known guiding element and the device for making openings in the bone are not intended to take a cylindrical autograft from the iliac wing crest.

It is known for an osteotome containing a working part in the form of a straight metal cylinder of a given diameter with a convex-rounded working end and measured risks transversely applied to the side surface of the osteotome, and a landing part in the form of a cylinder with a diameter corresponding to the diameter of the seat of the Vibrodol electric vibrator, on the side the surface of the cylinder has a protrusion and a slot for the cotter pin, and the working and landing parts are made as a whole (Patent No. 94452 RU. Publ. 27.05.2010).

However, the known osteotome is not intended to take a cylindrical autograft from the iliac wing crest.

Known osteotome for dental implantation containing a curved supporting rod and a working body in the form of a cylindrical body with measured risks and rounding at the front end, while a channel with a thread is made inside the cylindrical body for axial movement of the expansion screw (Patent No. 65751RU. Publish. August 27, 2007 )

However, the known osteotome for dental implantation is not intended to collect a cylindrical autograft from the iliac wing crest.

Known bone graft harvester for single use bone graft, which consists of a set of minimally invasive cutters with a diameter of 6, 8 or 10 mm fixed in the main cylinder with a handle (Electronic resource: http://www.arthrex.com/knee/bone-graft-harvester -technique / products).

However, the known bone harvester has a complex structure, the use of which is not always justified due to the increase in the cost of surgical intervention.

Known bone cutter for the collection of bone chips consisting of a needle with a trocar, a feather drill, a metering screw (Pankratov A.S., Lekishvili M.V., Kopetskiy I.S. Bone grafting in dentistry and maxillofacial surgery. Osteoplastic materials. - M .: Publishing house BINOM, 2011 .-- p. 46).

However, the known mill has low cutting efficiency, the absence of a variable inner diameter, the inability to obtain a single bone cylinder of a given size.

Known osteotome containing a handle and a working element provided with a cutting part, in which the cutting part throughout is made with evenly spaced teeth, each cavity provided with a sharpening made at an angle to the longitudinal axis of the osteotome (Patent No. 11684 RU. Publ. 16.11. 1999).

However, the known osteotome despite the fact that it has a cutting part with evenly spaced teeth, is not intended to take a cylindrical autograft from the iliac wing crest.

Known bone cutter, consisting of a cylindrical hollow body, in which the two knives are perpendicular to the longitudinal axis of the cylindrical body and radially to the diameter of the cylindrical body fixed to the wall in the end part, while the cutting edges of 1 or 2 knives are mutually located along the left or right rotation of the device, the end part of the cylindrical body has a circumferential cutting surface parallel to the longitudinal axis of the cylindrical body (Patent No. 139356 RU Electronic Resource with:

http://misimplants.ru/katalog/mis/nabory_instrumentov/nabor_dlya_sbora_kosti_mkbh26/#bigImg).

However, the known cutter is intended only for the formation of a bone bed for a dental implant with a small bone autograft and is not intended for the formation of a cylindrical autograft from the iliac wing crest.

Known trepan containing a cylindrical tubular body, a knife with a cutting edge on the working part, a piston and a limb with a vernier scale, in which the body is equipped with a rotation handle, a knife with a cutting edge on the working part is made of a diamond blade (Patent No. 22610 RU. Publ. 20.04 .2002)

However, the known trepan has a complex structure, the use of which is not always justified, in its design there is no variable inner diameter, and therefore it is impossible to obtain a single bone cylinder of a given size. In addition, it has low cutting efficiency.

The investigated prior art does not contain solutions in the form of sets of osteotomes having a simple design.

The objective of this utility model is to expand the means for collecting cylindrical autografts from the iliac crest. The result of the use is the minimally invasive collection of a single cylindrical cortical-spongy autograft, prevention of the development of many complications (damage to the external cutaneous nerve of the thigh, tailor muscle, inguinal ligament, neurovascular formations of the iliac fossa; fracture of the anterior superior spine; formation and suppuration of hematomas) and reduction of time operating session.

The problem is solved in that the set of T-shaped osteotomes includes two osteotomes, each of which is made in the form of a cylindrical hollow body, on one side of the latter, from the end side, a uniformly pointed apical cutting edge is made, on the opposite end is made a control element, and Kirschner needle.

For ease of use and ease of manufacture, the control element is made in the form of a cylinder fixed perpendicular to the longitudinal axis of the housing.

It is advisable to obtain a cylindrical single autograft with a diameter of not more than 6 mm, the first osteotome should be performed with an outer diameter of not more than 8 mm, an inner diameter of not more than 5 mm and an overall length of not more than 125 mm, while at the working end the inner diameter should be made of three steps, the first perform a step on the side of the control element with a diameter of not more than 6 mm, and perform a control element with a length of not more than 100 mm.

It is advisable to obtain a cylindrical single autograft with a diameter of not more than 7 mm, perform the second osteotome with an outer diameter of not more than 12 mm, an inner diameter of not more than 7 mm and an overall length of not more than 170 mm, while at the working end the inner diameter is made of two steps, the first perform a step on the side of the control element with a diameter of not more than 9 mm, and perform a control element with a length of not more than 80 mm.

The present utility model is illustrated by a detailed description and diagrams in which:

FIG. 1 - characterizes the main view with the cross section and the right view of the t-shaped osteotome from the set having a smaller diameter, according to the utility model;

FIG. 2 - characterizes an embodiment of a t-shaped osteotome from a set having a larger diameter, namely: the main view with the cross section and the right view, according to the utility model.

A set of T-shaped osteotomes consists of two osteotomes having different diameters, length, design of the cutting edge and control element (Fig. 1, 2).

The first T-shaped osteotome is made in the form of a cylindrical body 1 (Fig. 1). The outer diameter of the housing 1 is not more than 8 mm. The control element 2 is made with a length of not more than 100 mm and, by welding, is fixed on the cylinder of the housing 1. The overall length of the cylinder of the housing 1 is not more than 125 mm. The inner diameter of the opening 3 of the housing is not more than 5 mm. At the working end, a boring 4 was made with a diameter of not more than 6 mm and a depth of 17 mm. The lower end of the bore 4 is designed in the form of degrees 5 and 6 by increasing the diameters of the bore at each stage, respectively, which creates a variability of diameters on the inside of the cylinder. At the lower stage 6 of the bore, a uniformly pointed apical cutting edge is made.

The second T-shaped osteotome is made in the form of a cylindrical body 7 (Fig. 2). The outer diameter of the cylinder of the housing has a maximum of 12 mm. The control element 8 is made with a length of not more than 80 mm and by welding is fixed to the cylinder of the housing 7. The inner hole 9 with a diameter of not more than 7 mm and an overall length of not more than 170 mm. At the working end, the inner hole 9 is made with one step 10, with a diameter of not more than 9 mm. The control element is made with a length of not more than 80 mm and, by welding, is fixed on the cylinder of the housing 1. The overall length of the cylinder of the housing 7 is not more than 170 mm. At the lower stage 10, from the end side, a uniformly pointed apical cutting edge is made.

A set of T-shaped osteotomes is used as follows.

A linear incision is made up to 2 cm in the projection of the crest of the iliac wing, departing from the anterior superior iliac spine 2.5 cm dorsally (to avoid damage to the lateral cutaneous nerve of the thigh). The planned area of the ilium wing is reached in layers, the latter, using a raspator, is freed from the periosteum. The cylindrical body 1, 7, of the required T-shaped osteotome (Fig. 1, 2), is installed with an apical cutting edge 6 or 11 on the ridge portion parallel to the ilium wing. Then, using a hammer, holding the cylindrical body 1 or 7 by the control element 2 or 8, the graft is taken. The wound is sutured in layers. From a T-shaped osteotome, a single cylindrical autograft is removed in its entirety using a Kirchner needle (2-3 mm), which is introduced from the side of the control 2 or 8 into the hole 3 or 9.

The proposed utility model allows the use of a less traumatic technique for taking a bone autograft with a given diameter of 6 mm or 9 mm.

It prevents many complications (an aesthetic defect in the form of soft tissue retraction in the graft area in the traditional way, damage to the external cutaneous nerve of the thigh, tailor muscle, inguinal ligament, neurovascular structures of the ileal fossa; fracture of the anterior superior spine; formation and suppuration of hematomas).

In addition, it expands the arsenal of medical equipment that is not of high cost, convenient in operation, and reduces the time of surgical intervention.

Claims (1)

A T-shaped osteotome containing a body made in the form of a hollow cylinder, on one side of which an evenly pointed apical cutting edge is made from the end side, a control element is made at the opposite end, characterized in that it is equipped with a Kirschner spoke, a cylindrical hollow body is made with an outer diameter no more than 12 mm, with an inner diameter of not more than 7 mm and an overall length of not more than 170 mm, while at the working end the inner diameter is made of no more than three steps, the first step on the element side The board is made with a diameter of not more than 9 mm, the control element is made in the form of a cylinder with a length of not more than 100 mm and is fixed perpendicular to the longitudinal axis of the housing.

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