FR2497655A1 - Measuring gauge for plastic surgeon - measures facial and nasal features using two coarse bevelled toothed plates sliding together - Google Patents

Abstract

The implement is used in plastic surgery to take nasal measurements, comprising two toothed plates which slide relative to one another. The teeth are shaped and angled to suit the optimum number of facial angles and nasal roots. The sides of the teeth may be chamfered, the plates being attached by transverse pins through straight full length or intermittent holes. The method of attachment also guides the plates when sliding, the intermittent slot arrangement using pins through alternative sets of two slots. The pins may comprise two parts which screw or clip together. A vertical slide may be used to measure nose heights and a separating band may prevent chafing of the plates.

Description

The present invention relates generally to the reading of facial and particularly nasal measurements of an individual with a view to the choice or the execution of a custom frame
This instrument already exists, and is called a rhinometer, but it is inconvenient and unusable to use for certain asymmetrical noses with very high roots and flared upwards, or very low roots.

 The present invention relates to an apparatus for recording the nasal dimensions whatever the nose, as well as the difference in height of the external canthus, the height of the puy il les. The position of the base of the eyebrows, and the position of the cheekbones. All these measurements are taken from a single stable morphological reference; the horizontal line passing through the lowest external canthus.

The apparatus according to the invention, which is of the type of conformers commonly used, is generally characterized in that it comprises two transparent plates A and B flowing one relative to the other, each plate with notches at multiple angles, permattant when the device is open, its engagement on the nose of an individual. In, closing it like a caliper, we proceed to measure the anatomical nasal width on the engraved line Lc which is placed horizontally opposite the lowest external canthus. If the nose is too low, placing Lo in the same position, we will take the measurement on the line marked - 5 Lc or - 10 Lc placed 5 or 10 mi below the first.The bridge height will be measured at using the special slider C on the scale of the chosen reference lc-5
Lc or - 10 Lo, this strip due to its shape or its position gauging the nasal root exactly in the median plane of the instrument.

 The difference in height of the external canthus and the heights of the pupils will be appreciated compared to Lc gracie with horizontal lines engraved every 5 mm.

 The eyebrow and cheekbone heights will be appreciated compared to Lc thanks to an ordinary auxiliary ruler.

The characteristics and advantages of the apparatus according to the invention will moreover emerge from the description which follows, by way of example, with reference to the appended schematic drawings in which
Figure 1 is a view of the set opened to the maximum for the measurement of symmetrical noses: By pushing the front plate to the left we measure the noses at the front angles 25 30 35 40 degrees, pushing the nierne plate towards the right we measure 5 10 15 20 degrees.

 In this configuration of montare the nose measured will have a maximum length on Lc of 15 em for a space requirement of the device in length of 240 zm.

 Figure 2 shows the two plates separately.

Each of them made of a transparent material such as that sold under the trade name "PLEXIGLAS", which can additionally receive a treatment or deposit on the surface to harden it, has four notches whose sides 4 are inclined at the angles 25 5 30 10 35 15 40 20 degrees on one and 5 25 10 30 15 35 20 40 degrees on the other.

 The sides of the notches are changed 4 so that the measurement of the nasal length takes place exactly in the median plane of the device which corresponds to the plane of the bezels of the future frame.

 All the horizontal lines are engraved on the two faces opposite the median plane 5 of the device, to avoid a parallax effect.

 Above the line Lc, the notches are very largely cleared over a height of 15 am, a width of 30 min and connections of radius 5 mm to be able to carry out measurements on noses whose root is very high and flared towards the high.

 Finally, the guidance of the two plates is obtained by means of six oblong grooves 1 with the same pitch 40 mm and the same length 30 mm, the latter allowing the measurement of a rating 0 of - 10 Lc.

 Two axis screws in two parts 2, screwed or snapped on, provide guidance when they are in place in two of the six grooves facing the two plates. fig 3.

This system can advantageously be replaced by prismatic guide grooves 3 located upwards over the entire length of the instrument. fig 4
In any case, a strip of foil 6 of the same material and some tenth of a millimeter thick will be interposed between the two plates glued on one of them at the level of the guide system to prevent scratches on the material which constitutes the pads during movement. (fig. 5)
The measurement of the asymmetrical noses will be carried out either by moving the plate A by 1 groove with respect to the B for the differences in inclination of the faces by 5 degrees, by 2 grooves for the differences in inclination by 10 degrees, and By placing plate B in front of plate A by turning it over, if you do not find the desired combination A being placed on B.

 We can thus perform 64 combinations of facial angles0.

 The bridge height measuring strip C is held by hand against the instrument (fig 6) or can be manufactured in a thin plate which slides in a passage 7 opening into the notch at right of it.

 It is necessary in this case to provide a passage for each notch and in the rear plane of each plate so that the introduction of the strip is possible, whatever the arrangement chosen.

 It goes without saying that the present invention has only been described as an indication, but in no way limiting, and that it is capable of several variants without departing from its scope.

Claims (7)

REVEBYDICATIONS  1. Apparatus for reading the facial measurements of an individual, characterized in that it comprises two sliding plates, one with respect to the other, comprising notches with suitable shapes and selected angles which can be adapted to the largest number of 'angles of faces and nasal roots. for minimum dimensions.  2. Apparatus according to reference 1 characterized in that the sides of the notches are chamfered.  3. Apparatus according to any one of claims 1 and 2 characterized in that the plates are guided by 6 oblong grooves facing only two of which are used depending on the configuration of the assembly, or by 2 prismatic grooves occupying the entire length of the only one device being used depending on the configuration of the assembly.  4. Apparatus according to any one of claims 1 to 3 characterized in that the two selected oblong grooves are assembled by two axes in two parts held by screwing or snap-fastening.  5. Apparatus according to unaquelconque of claims 1 to 4 characterized in that a thin strip of mtme flat material ced at the guide slightly apart the two plates from each other to prevent them-do scratch during movement.  6. Apparatus according to any one of claims 1 to 5 characterized by an additional strip which measures the nasal height in its median plane, this strip being simply placed on the front of the device, or sliding in a passage cut to the right of each notch.  7. Apparatus according to any one of claims 1 to 6 characterized in that five horizontal lines are engraved from 5 to 5 mm on the coincident faces of the plates, three of these lines being marked Lc- 5 Lc - 10 Lc, line Lc can be distinguished by a red engraving.