RU2498896C2 - Device for hair clipping - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: invention relates to cutting devices and may be used for hair clipping. The device contains a body with guides positioned on its bottom, a blade, a disk and a brush. The brush covers the blade and is installed in the body guides to that to enable reciprocating motion. The reciprocating motion is ensured with the help of the disk by way of mechanical frictional transmission.

EFFECT: ensuring the possibility of sparing mode preparation of hair cores within damaged areas of skin integuments for performance of medical manipulations.

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Description

The invention relates to medical equipment and is intended to optimize the conditions for the use of external ointment therapy in the treatment of pustular lesions of the scalp.

Currently, in the treatment of pustular lesions of the scalp skin - folliculitis - external therapy is widely used, such as ointments and solutions of aniline dyes, in particular, brilliant green, malachite green, methyl violet, applications of which as part of the course of complex therapy of pyoderma held daily with the necessary multiplicity (8).

For the successful use of external therapy, it is necessary to apply drugs to appropriately prepared skin areas of the scalp, which should take into account the possibility of manipulations to remove the scruffy elements, violate the integrity of the pustules, remove pus, and lubricate the lesion with 2% iodine tincture or a solution of methylene blue.

A significant drawback of the initial preparation of lesions for subsequent treatment is the imperfect instrumental support of therapeutic intervention, which can lead to the development of serious complications in the future, for example, the appearance of symptoms of Bokhart impetigo, as well as the formation of an extremely depressed mental state of the patient (2).

It is impossible not to recognize the deeply vicious continuing practice of primary preparation for therapeutic measures of the affected areas of the scalp. In the area of the lesion foci, it is considered permissible to cut hair, using for this purpose household machines for cutting with replaceable comb-nozzles. Hair trimming with these devices, in view of their structural flaws, suggesting the direction of the vector of the dominant effort from the bottom up, contributes to trauma to the mouths of the follicles, which leads to active dissemination of infection and the emergence of new lesions - the progression of folliculitis, with the possible development of Bokhart disease.

The use of clippers is undesirable for a number of reasons.

Subjective signs of folliculitis are well known, including burning, soreness, itching. The use of hair clippers, taking into account the specific localization of pathological efflorescence against the background of the marked subjective stigma accompanying the clinical course of folliculitis, often leads to the development of anxiety-phobic reactions with the detection of sociophobia (3). A pronounced cosmetic defect exacerbates the course of dermatosis. There is anxiety associated with a painful perception of a cosmetic defect, ideas of inferiority are being formed, in view of the loss of external attractiveness. Avoiding behavior is simulated. Xiolytic syndrome is increasing (5).

It is known that affective disorders are observed in 32% of patients with skin pathology. Affective disorders are closely associated with skin diseases, in particular, with folliculitis (7).

Even affective insolvency, slightly expressed in the form of depression, significantly aggravates the course of folliculitis, is a factor in the chronicity of this dermatosis, prolongs the length of hospital stay of patients, and negatively affects the quality of life. Depression with folliculitis can lower the threshold of itching and provoke the start of the itching-combing cycle. Accordingly, the objective and subjective manifestations of dermatosis are strengthened, the patient’s usual lifestyle is violated, the possibilities of his professional activity are limited, and the periods of remission in 40% of patients are reduced. At the same time, feelings of depression, depression, inferiority due to the psycho-traumatic effect of skin pathology are growing. In the clinical picture of depressions caused by dermatological pathology, signs of bodily suffering in patients are accompanied by an exacerbated-painful perception of a flaw in appearance, which coincides with a negative self-esteem. Pathological efflorescences scattered over the surface of lesions, erythematous spots, crustaceous elements, sharp ointment odors, a change in appearance, often a negative property, resulting from the unprofessional use of clippers, are subjectively regarded not only as their own “ugliness”, but also as a defect unpleasant to others. In society, patients experience severe discomfort. Patients of this kind are usually characterized by a predominance of demonstrative personality traits and increased sensitivity to negative external influences. Symptoms of insomnia in combination with manifestations of a skin disease and massive somatovegetative disorders significantly limit the possibilities of professional activity and social activity of patients (6).

Effective treatment of folliculitis by traditional methods presents significant difficulties, requires innovative instrumental equipment to avoid the development of affective disorder syndromes, and to cause a gradual deactivation of experiences associated with traumatic effects. Along with the reduction of affective disorders, the proposed device will avoid pronounced clinical manifestations of dermatosis.

The closest in technical essence to the claimed device is a hair trimmer selected as a prototype - HAJR CUTTER - article No. 414, consisting of a body, a universal stainless steel blade, a rotating vernier, a comb, a spring.

A significant disadvantage of the prototype is its design flaw, which consists in introducing into the functional chain that affects the action of the hair trimmer several elements, including the vernier and springs made of heterogeneous materials, which does not provide the necessary level of strength and safety when using the hair trimmer destination.

In addition to the above, the kinematic failure of the functional chain is due to a significant number of active links in the latter.

It is known that the hair trimmer is a mechanical system with a serial connection of elements - gears and linkage mechanisms. The degree of reliability of such devices is determined by the multiplication theorem for independent events:

, $$P_{\sum }={\displaystyle \prod _{k=\mathrm{one}}^n{P}_k}=P_{\mathrm{one}}\left(t\right)\times P_2\left(t\right)\times ...\times P_n\left(t\right)$$

,

where P _i (t) is the probability of failure of the i-th element;

P _∑ is the probability of failure-free operation of the mechanism as a whole.

From the above formula it follows that the reliability of the failure-free operation of complex systems of mechanisms with a serial connection of the links is low (1.4). So, for example, in a five-link kinematic chain with P ₁ (t) = P ₂ (t) = P ₃ (t) = P ₄ (t) = P ₅ (t) = 0.9, the total probability of failure-free operation will be p £ = 0.59, which is very unsatisfactory.

The inventive device is devoid of the above disadvantages.

The problem solved by the invention is the creation of conditions for the effective use of external therapy in the treatment of lesions localized in the scalp, the prevention of possible complications, especially those severe such as Bokhart impetigo, reducing the cost of materials used to manufacture the elements of the proposed device, expanding the scope of use of the claimed device due to the design features of the functionally active part, involving the use of the device in outpatient settings.

The problems are solved due to the fact that the rotation of the disk (1) ensures that the comb-nozzle (2) moves along the guides (3) located on the bottom of the housing of the proposed device by means of friction mechanical transmission, making it possible to prepare hair rods in the affected areas of the skin in a gentle mode to conduct medical manipulations using external therapy, in particular, aniline dyes.

The use of a device for trimming hair allows you to save the optimal length of the hair shaft - 6 mm.

It seems important to emphasize that the reduced, compared with the prototype, the number of elements that ensure the movement of the comb, provides the necessary level of reliability of the device. The same goals are the manufacture of these elements, especially the case, the disk and the guides from a homogeneous material, for example, plastics, which implies a reduction in production costs in the factory production of a hair trimmer.

The proposed device has a portable case dimensions: 115 mm in length and 50 mm wide, which makes its use available on an outpatient basis.

The tasks associated with the operation of the hair trimming device are solved by using the friction gear force, as one of the types of mechanical gears that allows reciprocating movements of the comb when applying the force vector directly to the disk, which allows you to set the comb teeth to the required length - 6 mm Trimming hair rods is done with gentle movements of the device with the application of force from top to bottom. The direction of the force vector along the proposed trajectory allows you to avoid trauma to the hair follicles and dissemination of the infectious beginning, reduces the risk of developing complications such as Bokhart impetigo during treatment.

The drawing shows a device for trimming hair, consisting of a body (4) with fixing dowels (5) for mounting a universal blade (6) and guides (3) that determine the direction of movement of the comb (2), as well as the disk (1).

The device for trimming hair is made taking into account the requirements of modern design.

The device operates as follows.

After placing the patient in a sitting position, the teeth of the comb are set with orientation to the resection of the hair rods to the required length in order to effectively use external therapy, in particular, aniline dyes. Hair trimming is carried out taking into account the need to prevent pyoderma of the scalp with gentle movements with the body moving from top to bottom. The indicated functions are realized due to the use of traction forces for reciprocating movements of the comb, which are developed by means of the friction transmission, which is brought into an active state by means of a disk. The movements of the comb (2) are performed with the necessary multiplicity and orientation due to the presence of structural features of the housing (4), in particular, due to the guides laid (3) laid along the bottom of the housing of the device proposed.

Thus, the considered device for trimming hair allows you to reliably, conveniently and safely solve the problems of preparation for further medical manipulations using means of external therapy of lesions localized in the scalp; to avoid the serious complications provoked by dissemination of coccal infection, to exclude psycho-traumatic situations with inhibition of the functions of the emotional-mnemonic sphere with the subsequent increase in painful symptoms of a subjective property, aggravating the further course of dermatosis and leading to a noticeable reduction in the period of remission against the background of an increase in the patient's time on the disability sheet.

Safety in the operation of the proposed device for trimming hair is provided by the introduction into the design of a comb moving due to mechanical friction transmission, securely covering the universal blade.

The claimed mechanism allows to increase the effectiveness of the use of external therapy for coccal lesions with localization of foci of pathological efflorescence in the scalp by eliminating traumatic effects aimed at the hair follicles and negative effects on the emotional and mnemonic sphere of patients. In addition, the use of a hair trimmer solves the problem of possible injuries due to the use of universal blades, and its design features make it possible to widely use the mechanism on an outpatient basis.

REFERENCES

1. Bolotin V.V. Prediction of the resource of machines and structures. - M.: Mechanical Engineering, 1984. - 312 p., Ill.

2. Broytigam V., Christian P., Rad M. Psychosomatic medicine / Per. with him. -. M. 1999. P.376.

3. Kozhevenko Yu.N. Psychosomatic dermatoses, in the clinic // Ros.zh. leather and veins. bol. - 1999; 60-65.

4. Reshetov D.K. Machine details: textbook. for universities. - M.: Mechanical Engineering. 1974.

5. Smulevich A.B., Dorozhenok I.Yu., Belousova T.A. Depression in the clinic of dermatology: Depression in mental and somatic diseases. M, 2003.

6. Smulevich A.B., Dubnitskaya Z.B., Tkhostov A.Sh. et al. Psychopathology of depression (towards building a typological model): Depression and comorbid disorders. M., 1997. S. 28-53.

7. Fitzpatrick, J. E., Eling, J. L. Secrets of Dermatology / Per. from English - M .: SPb .: "Publishing house BINOM" - "Nevsky Dialect", 1999. - S.207-215.

8. Berger R.S., Seifert M.R. Whirpool folliculitis. A rewiew of its cause, treatment and prevention Cutis, 45; 97 - 98.1990.

Claims (1)

Device for trimming hair, characterized in that it comprises a housing with guides located on its bottom, a blade mounted on the housing, a disk and a comb covering the blade and installed in said housing guides with the possibility of reciprocating movement provided by the disk by means of mechanical friction transmission.