US 2314590 A
Description (OCR text may contain errors)
March 23, 1943. M P, MCCARTY ELECTRO VACUUM VIBBATOR Filed Aug. 26, 1940 E A A AA m l I Aww/WV Patented Mar. 23, 1943 2,314590 ELEo'rnovAoUUM visitaron Madison P. McCarty,
Dallas, Tex., assignor of one-half to John D. Grey, Dallas, Tex. Application August 26, 1940, Serial No. 354,196 1 Claim. (Cl. 12S- 38) This invention relates to dermatological instruments and it has particular reference to a device for applying vacuo-vibratory treatments to the skin.
The principal object of the invention is'to provide an instrument for the safe and effective removal of comedones occluding the excretoryl sebaceous glands, especially of the face and eliminatos the usual discomfort attending removal of such mass by the method of pressing the skin surrounding the blemishes.
Another object of the invention is to provide adevice of the character specified, which is likewise highly effective for smoothing superficial skin wrinkles by rehabilitating the derma tissues through increased blood circulation induced by vibration and vacuum actuation.
Another object of the invention is to provide for the establishment of vacuum with vibration or for the breaking of the vacuum without interrupting operation of the device where vibration alone is desired, such being accomplished through the medium of `a simple valve conveniently disposed in the head of the instrument.
The invention further provides for the interchangeability of applicators in order that difierent designs of applicators for different uses may be conveniently and quickly attached to the instrument. Applicators are employed for building up skin tissues, extraction of pus from blemishes,
removing superiicial wrinkles and for many otherv uses where vacuum may be effective.
With the foregoing objects as paramount, the invention has other objects and corresponding accomplishments obtained by the embodiment oi the invention set forth in the following descrip-l tion and illustrated in the accompanying drawing, wherein:
Figure 1 4is an elevational view of the invention in longitudinal cross-section.
Figure 2 is a detail front elevation of the cylinder per se.
Figure 3 is a transverse section on line 3-3 on Figure 1.
Figure 4 is a transverse section on line 4-4 on Figure l, and
Figure 5 is a perspective view of the invention.
Continuing with a more detailed description of the drawing, reference is primarily made to Figure 1 in which the numeral I designates the handle of the device comprised preferably of a cylindrical shell of plastic material and which is joined to the swaged end 2 by means of small set screws 3. Concentric with the handle I is a shell 4 of soft iron which contains a coil 5. Within the electro-magnetic coil is a brass cylinder 6. A stationary core 'I is disposed in this cylinder at one end. An armature 8 is axially arranged in the core of the coil 5 and is mounted on a fiat spring This spring serves to return the armature at each cycle change of the alternating current energizing the coil.
A shading ring I8, preferably a short circuited, one turn copper tube or coil surrounds the armature or part of the pole 8 and is effective to reduce the magnetic flux in that part of the pole covered byv the tube or coil by currents induced in the said shading ring.
The outer end of the armature in the end member 2 is obviously oscillated or reciprocated by the motion imparted thereto by the joint action of the stationary core 1 and ,spring 9 and as a result, the 'arm II, attached to the armature is caused to move more or less axially or longitudinally with slight lateral displacement. As
such movementv occurs, the connecting pin I2, pivoted at a to the arm II is reciprocated in the cylinder I3 through the guide I4. To compensate for the lateral displacement of the arm II and consequent similar displacement of the pin I2, the cylinder I3 is pivoted at b intermediate its ends to the end member 2, throughi the medium of arms b'.
The connecting pin I2 carries a piston I5 having a leather I6. A stationaryhead I1 is disposed in the' cylinder below the piston over the restricted passages I8 in the lower end of the cylinder. A sleeve I9 is threaded or otherwise mounted on the lower end of the cylinder and this sleeve has cemented therein an applicator 28, preferably of transparent glass. It is obvious that the applicator shown may be substituted by others oi different operative faces suited to different uses. A packing ring or gasket 2l is interposed between the sleeve I9 and lower end of the cylinder I3 to insure against possible leakage likely to interfere with the setting up of an effective vacuum in the applicator ywhen the latter is applied to the skin. The stationary head i'I is secured in place by a screw 22 and it will be observed that this head likewise has a leather similar to that of the piston I5 Iand while-the drawing shows a comparatively close relationship between the leathers of the head and piston with the wall of the cylinder, the-clearance is such as to permit of passage of airupward from within the applicator 20 through passages I8 as the piston I5 is reciprocated, so as. to evacuate the applicator. A rubber grommet 23 surrounds the cylinder I3 where it protrudes from the lower plate 24 of the shell 25 constituting the head of the device and which is preferably constructed of a suitable plastic comparable with that of the handle.
As a means for controlling the electric current entering the coil 5, a switch is provided and is comprised of a member 26 having a ange to receive one end of the shell I and whichis secured by set screws as shown. This member 26 has a circular cavity to receive the complementary protuberance 2l' of a plug 28. Ferrous contacts 29 are carried by the member 26 and are connected to the coil terminals by wires c. Contacts 3B are carried by the plug 28 and since the latter is rotatable in the cavity of the member 23, the contacts 29 and 30 are movable into and out of engagement as shown in Figure 4. When in engagement one with the other, circuit is completed through the service wire 3I and coil 5.
When the coil 5 is energized, armature 8 will be attracted to the stationary core 'I but due to the provision of an air gap between the armature and core, the operation is silent. Spring S returns the armature 8 to its original position when displaced and the resultant recprocation of the armature is effective to actuate piston I5 in the cylinder I3. Air in the applicator 20 is displaced on the down stroke of piston I5 through the space between the leather I6 of the piston. When the piston reverses, the leather I6 expands against the wall of the cylinder while the air in .the applicator is extracted through passages I8 and through the space between the leather of the head I'i and the cylinder wall, to enter the space between the piston and head I1 preparatory to expulsion as above described. Breathing in the space above the cylinder leather is effected through the pin hole I4 in guide I4.
Thus a partial vacuum is set up in the applicator cup sought yet not so severe as to harm even the most delicate tissues.
20 suicient to accomplish the results 40 When it is desired to operate the device Without vacuum and where vibration alone is desired, a valve 32 is operated to effect communication of the interior of cylinder port 33 in the cylinder wall to dispel the vacuum. An eccentric 34, operated by a lever 35 controls the movements of valve 32 relative to the port 33 and a spring 36 is employed to hold the valve in operative position except when displaced by the lever 35. The lever 35 protrudes through a slot 31 in the head 25 and is so positioned as to be conveniently accessible to a finger of the hand holding the instrument in operative position.
Manifestly, the construction as shown and described is capable of some modification and such modication as may be construed to fall within the scope and meaning of the appended claim is also considered to be within the spirit and intent of the invention.
What is claimed is:
In a device for the treatment of skin blemishes, a handle having a head whose longitudinal axis is in oblique relation to the longitudinal axis of the handle, an electro-magnetic coil in said handle, an armature shaft oscillatable by said coil, a cylinder in said head, a piston in said cylinder, a piston rod, an arm within the conines of said head connecting said armature and piston rod to reciprocate said piston by means of said armature, means pivoting said cylinder intermediate its ends whereby to effect oscillative vibration thereof, an interchangeable applicator carried by said cylinder, a perforated head in said cylinder between said piston and applicator, means to constrain air to pass from the latter into said cylinder by the action of said piston to establish a vacuum in said applicator and means to render said' latter means ineffective to control said air and to suspend the evacuating eiTect of said piston.
MADISON P. MCCARTY.
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