RU187554U1 - BONE TRAPEAN WORKING NOZZLE - Google Patents

Abstract

The working nozzle of a bone trephine refers to medicine, namely surgery, purulent surgery, vascular surgery, traumatology. The technical result of using a working nozzle of a bone trephine with a trihedral type of sharpening at an angle of 20 ° and giving the cutting properties of the faces due to grooves on the planes of the faces is the possibility of trepanation compact and spongy bone tissue in a manual way with a sparing option for trepanation of bones. The use of a working nozzle of a bone trephine of a new design and a manual gentle method of drilling with schyu miniature locking device ensures that trepanation on any parts of bones about the different kinds of use of the device patologiiOtsenka conducted experiments on cadavers and clinical practice 15 patients. There were no complications associated with the use of the instrument. The use of the device showed the simplicity of its use. The device the working head of a bone trepan consists of a tip with a trihedral type of sharpening, the angle of sharpening is 20 °, the right side at the top of the edge of the sharpening has a groove 2/3 of the width of the face plane, gradually decreasing depth, the cross section of the tip represents a drill with three cutting edges, a cylindrical body with a diameter of 4.0 mm and a length of 20.0 mm, the base of a trephine hexagonal configuration with a diameter of 5.0 mm, a length of 15.0 mm with a tapered end. 3 ill.

Description

The device relates to medicine, namely to surgery, traumatology, hematology, neurosurgery and can be used to treat inflammatory bone diseases, obliterating atherosclerosis, and brain diseases.

In different sections of medicine, for trepanation of various types of bones, drills, cutters, manual types of trephines are used, for the puncture of the trabecular bone, various versions of the Kassirsky needle are used.

A prototype device for trepanation of compact and cancellous bone tissue used a cone-shaped cutter, which consists of a cone-shaped head with six cutting faces, a stem and a shank for fixing in the fixing device presented in the MCT Mr. Curette Tech “Instruments for Surgery and Implantology”, catalog 2014, www.mrcurette.ru.

The disadvantage of using the technique of bone trepanation with the help of a bone cutter is the bulkiness of the tools for fixing the working nozzles, the difficulty of accounting and regulating the mechanical effect on the tissue, the appearance of thermal damage during bone drilling.

EFFECT: creation of a working attachment for a bone trephine with a trihedral type of structure of the trephine tip, giving the trephine cutting properties due to grooves on the tip planes, increasing the gentle principle of the trephine cutting action occurs by fixing it in the handle-retainer and rotating the device around the longitudinal axis manually.

The technical result is achieved due to the presence in the nozzle of a bone trephine tip with a trihedral type of sharpening at an angle of 20 °, at the edge of the face, the right side has a groove 2/3 of the width of the face plane, gradually decreasing depth, a cylindrical body with a diameter of 4.0 mm, length 20 , 0 mm, the base of the trephine is a hexagonal configuration with a diameter of 5.0 mm, a length of 15.0 mm with a conical end.

USEFUL MODEL EXPLAINED BY FIGURES (Figs. 1-3)

In FIG. 1. View of the device in isometry.

In FIG. 2. General view of the device, top view.

In FIG. 3. General view of the device, side view.

The device the working attachment of a bone trephine consists of a point (1) with a trihedral type of sharpening, the angle of sharpening is 20 °, at the top of the edge of the sharpening, the right side has a groove (2) 2/3 of the width of the face plane, gradually decreasing depth, the cross section of the tip is version of a drill with three cutting edges, a body (3) of a cylindrical shape, 4.0 mm in diameter and 20.0 mm long, a base (4) for a hexagonal configuration, 5.0 mm in diameter, 15.0 mm long with a conical end.

THE DEVICE WORKS AS FOLLOWS

The working nozzle of a bone trephine is inserted into the fixation unit of the device for fixing the nozzles of medical instruments and is fixed with the nut on the device. By rotating the handle of the locking device, a bone trepan is screwed into the bone tissue. The working nozzle of a manual trephine processes the edges of the channel drilled with an electric drill in compact bone tissue to remove a layer of altered bone tissue. By twisting the nut from the fixation unit of the working nozzles, the bone trepan is removed from the device for fixing the nozzles of medical instruments.

EXAMPLES OF CLINICAL USE OF A BONE TRAPANA TIP

Patient K., 64 years old. He was hospitalized at the KGB Clinical Nursing Unit of the NSR from 01/15/17 to 02/02/17. Diagnosis: atherosclerosis obliterans of the vessels of the lower extremities, peripheral segment. INC. IV Art. left, trophic ulcer of the fourth toe of the left foot. SD 2 type. Ischemic heart disease. 01/19/17 the operation was performed revascularization osteotrepanation.

Under intravenous anesthesia, osteotrepanic openings were made along the lateral and medial surfaces of the thigh and lower leg with a device for fixing the nozzles of medical instruments and the working nozzle of a bone trephine. Control of hemostasis. Iodine. Aseptic dressing. The postoperative period was uneventful. The trophic ulcer of the fourth toe of the left foot healed.

Patient F., 79 years old. He was hospitalized at the KGB Clinical Hospital for Nursing Care from 03/09/16 to 03/29/16. Diagnosis: atherosclerosis obliterans of the vessels of the lower extremities, the peripheral segment on both sides. INC II Art. left, IV art. on right. 03/16/17 the operation was performed revascularization osteotrepanation, autohemoinfiltration of the soft tissues of the right lower limb.

Under spinal anesthesia, 3 osteotrepanation holes were made in the crest of the anteroposterior spine of the right iliac bone. A device was used to fix the nozzles of medical instruments and the nozzle of a bone trephine. An aspiration method yields up to 40 ml of an autologous bone marrow substrate, which is introduced into the calf muscles along the medial and lateral surfaces of the right lower limb. Control of hemostasis. Iodine. Aseptic dressing. The postoperative period was uneventful. At discharge, the degree of INC. III degree.

Patient K., 58 years old. He was hospitalized at the KGB Clinical Hospital for Nursing Care from 03/17/17 to 04/04/17. Diagnosis: atherosclerosis obliterans of the vessels of the lower extremities, the peripheral segment on both sides. INC II Art. left, III art. on right. 03/24/17 the operation was performed revascularization osteotrepanation, autohemoinfiltration of the soft tissues of the right lower limb.

Under spinal anesthesia, one osteotrepanic opening was made in the crest of the anteroposterior spine of the right iliac bone. A device was used to fix the nozzles of medical instruments and a bone trephine nozzle. Using an aspiration method, up to 80 ml of an autologous bone marrow substrate was obtained, which was inserted into the calf muscles along the medial and lateral surfaces of the right lower limb, as well as into the interdigital spaces. Control of hemostasis. Iodine. Aseptic dressing. The postoperative period was uneventful. At discharge, INC II Art. on right.

Patient Sh., 71 years old. He was hospitalized at the KGB Clinical Hospital for Nursing Care from 03/27/17 to 04/18/17. Diagnosis: atherosclerosis obliterans of the vessels of the lower extremities, the peripheral segment on both sides. INC. III art. left, II art. on right. 04.04.17 the operation was performed revascularization osteotrepanation, autohemoinfiltration of the soft tissues of the left lower limb.

Under spinal anesthesia, one osteotrepanation hole was made in the crest of the anteroposterior spine of the left iliac bone. A device was used to fix the nozzles of medical instruments and the nozzle of a bone trephine. Using the aspiration method, up to 60 ml of an autologous bone marrow substrate was obtained, which was introduced into the calf muscles along the medial and lateral surfaces of the right lower limb. Control of hemostasis. Iodine. Aseptic dressing. The postoperative period was uneventful. When discharge INC. II st.left.

Patient P., 69 years old. She was hospitalized at the KGB Special-Purpose Clinical Hospital KMPB from 09/29/18 to 10/13/18. Diagnosis: chronic osteomyelitis of the head of the right shoulder, stage of exacerbation, fistulous form. Concomitant diseases - type II diabetes mellitus, severe course, stage of subcompensation.

07/16/18, a patient in the KGB hospital № 4 performed an open reposition of a comminuted fracture of the head of the right shoulder, MOS of the neck of the right shoulder. 09/04/18 metal structure was removed. She was hospitalized in the purulent surgery department 5 days after the temperature rises and the purulent fistula appears. 09/30/18 under local anesthesia, osteotrepanation of the neck of the right shoulder was performed on both sides with bone catheterization. In the postoperative period, intraosseous administration of a sodium hypochloride solution and antibiotic therapy taking into account the antibioticogram were performed. 10/11/18 fistula closed. 10/12/18 X-ray control, no destructive changes were noted. Catheters removed, 10/13/18 discharged under outpatient supervision of a surgeon at the place of residence.

Thus, the use of a manual bone trephine nozzle in combination with a device for fixing the working nozzles of medical instruments showed the effectiveness of trepanation of bone tissue in order to revascularize the lower extremities with ischemia, and conduct regional antibacterial therapy for acute and chronic osteomyelitis of the limb bones.

Claims (1)

The working attachment of a bone trephine consists of a working part in the form of a milling cutter, a rod, a base for attachment, characterized in that the working part is a tip with a trihedral type of sharpening at an angle of 20 °, at the top of the edge of the sharpening, the right side has a groove 2/3 of the width of the plane faces of gradually decreasing depth, the cross-section of the tip is a drill with three cutting edges, a cylindrical body with a diameter of 4.0 mm, a length of 40.0 mm, a trefoil base with a hexagonal configuration with a diameter of 5.0 mm, a length of 15.0 mm with a conical shape end.

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