RU20726U1 - DISTANCE METER BETWEEN THE FOOT PLATE OF THE STIRLE AND OTHER ELEMENTS OF THE HUMAN EAR - Google Patents

Abstract

A distance meter between the foot plate of the stapes and other elements of the human ear, consisting of two parts moved relative to each other, characterized in that it has an angular shape to determine the distance from the foot plate to other elements of the ear, use scissors with a slider having a protrusion at the end and a fixed rod with a refined needle-shaped end and in the hinged part of the reference scale.

Description

Meiyedu distance meter with a single plate of stapes and other elements of the human ear.

The present invention relates to medical equipment, in particular, to auxiliary instruments for microsurgical operations.

In the course of stapedoplasty with the use of prostheses performed in patients with otosclerosis, the establishment of an appropriate prosthesis length for a given patient is very important.

For this purpose, some authors propose special meters (N.A. Preobrazhensky, 1962, V.V. Zhurovsky and A.I. Panin, 1964, B.A. Smirnov, V.P. Baldin, V.P. Busygin, N . I. Kisilev and L. M. Isaev, 1980). However, each of them has its drawbacks.

So, when using the instrument proposed by V.V. Zhurovsky and A.I. Panin in the form of a measuring ruler to determine the length of the stapes prosthesis during auditory-improving microoperations, which is inserted into the tympanic cavity, its lower end is mounted on the foot plate, and the A Instrument for intra-ear surgeries ASU No. 760973 MKI A 61 F 1/00 dated 09/07/80, containing a body with a protruding pointer and a handle, a probe movably placed in the body and having a bed for preparing a prosthetic stirrup, designed to measure other than a standard Teflon prosthesis and its simultaneous cutting off, and also when using it, due to its direct linear shape, a part of the surgical field is closed. For the prototype of the proposed tool, we take "an auxiliary tool for intra-ear surgery, designed to determine the length of the leg of the prosthetic stapes and at the same time cutting it off. The disadvantages of this tool are: - its linear form, which during microsurgical operations on the ear, narrows the view of the surgical field; -the tool is intended only to determine the length of the legs of standard Teflon dentures and its simultaneous cutting. To eliminate these shortcomings, we offer a distance meter developed by us between the foot plate of the stapes and other elements of the human ear. The purpose of our invention; faster and more accurate determination of the distance between the foot plate of the stapes and other elements of the human ear when performing various microsurgical operations on the ear. In hearing-enhancing microsurgical operations, it is very important to accurately determine the distance between the foot plate of the stapes and the length of the leg of the anvil or other elements of the middle ear (malleus, chord, edge of the posterior wall of the ear canal) that hold the prosthesis. Based on the results of these measurements, the required length of the prosthesis is selected, strictly individually for each person.

the cop is held with two fingers by the branches of the scissor handle, which does not close the view of the surgical field due to its angular shape. Having installed the needle-shaped end of the rod on the foot plate, we extend the jaws of the tool handle, while the slider moves along the rod and brings the protrusion to the desired measurement location. The measurement results are counted on a scale.

Description of the tool in statics:

The meter consists of a fixed rod 1 having a sophisticated end and a slider 2 having a protrusion at the end. To move the slider 2 on the rod 1 are the branches of the scissor handle 3. The movement is carried out using articulated gearing. To ensure rigidity of the delicate parts of the tool (rod 1 and slider 2), a guide sleeve 4 is provided. In the hinged part of the tool on the rod 1 is a scale with a division price of 0.5 mm, and on the slider 2 there is a reference risk (see sketch scale).

Description of the tool in use:

When taking measurements, the needle-shaped end of the rod 1 is mounted on the foot plate, and the slider 2, using the handle 3, moves the rod and brings the protrusion (see view on page B) to the desired measurement location. The measurement results are counted on a scale.

A specific application example:

When performing auditory-improving microsurgical operations on the ear, in order to determine the distance between the foot plate of the stapes and other elements of the ear (long leg of the anvil, malleus, chord, edge of the posterior wall of the ear canal.), An instrument under visual control (under the microscope) is inserted through the ear funnel into middle ear. In this case, the tool is held with two fingers by the branches of the scissor handle, which do not close the view of the surgical field due to the angular shape of the tool. Having installed the needle-shaped end of the rod on the foot plate, we extend the branches of the tool handle.

nets of the rod on the foot plate, push apart the jaws of the tool handle, while the slider moves along the rod and brings the protrusion to the desired measurement location. The measurement results are counted on a scale.

B-naya S., 60 years old, East. disease number 165. Diagnosis: Chronic left-sided post-traumatic median otitis media. Left ear surgery performed: Tympanotomy with incudoplatinopexy. During the operation, the distance between the stapes base and the long leg of the anvil was measured to determine the length of the putative prosthesis. To this end, through the operating ear funnel, under the control of vision (under a microscope), a meter was inserted into the tympanic cavity, the needle-shaped end of the instrument was placed on the stirrup foot plate, the branches were opened, and the protrusion was brought under the lenticular process of the long anvil leg. The measurement result was counted on a scale located on the -3.5 mm slider.

List of references:

1. The author's certificate of the USSR No. 183888, M. Kl. A 61 B 17/24, 1965.

2. The author's certificate of the USSR No. 760973, M. Kl. A 61 F 11/00, 1980.

Director of the Research Institute of Ear, Throat and Nose Professor, Doctor Med. of sciences

The authors:

A.I. Kryukov

D.C. Donditov

L.A. Moseykina

R.E. Nikitin

Claims (1)

A distance meter between the foot plate of the stapes and other elements of the human ear, consisting of two parts moved relative to each other, characterized in that it has an angular shape to determine the distance from the foot plate to other elements of the ear, use scissors with a slider having a protrusion at the end and a fixed rod with a refined needle-shaped end and in the hinged part of the reference scale.