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Publication numberUS2476645 A
Publication typeGrant
Publication dateJul 19, 1949
Filing dateNov 27, 1946
Priority dateNov 27, 1946
Publication numberUS 2476645 A, US 2476645A, US-A-2476645, US2476645 A, US2476645A
InventorsWalter Wanzenberg Frederick
Original AssigneeBurdick Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
High-frequency diathermy applicator
US 2476645 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

July 19 1949# F. w. wANzENBERG 2,476,645

HIGH-FREQUENCY DIATHERMY APPLICATR Filed NOV. 27, .1946 v 4 Sheets-Sheet 1 a Mw July 19, 1949. F. w. wANzENBERG 2,476,645

HIGH-FREQUENCY, DITHERMY APPLICATOR 4 Sheets-Sheet A2 Filed Nov. 27, 1946 4 Sheets-Sheet 5 75 X0 l. f

F. w. WANZENBERG 2,476,645

HIGH-FREQUENCY DIATHERMY APPLICATOR 4 sheets-sheet 4 w WM y July 19, 1949.

' Filed Nov. 27, 1946 HQI@ VIII/lill,

Patented July 19, 1949 UNITED STATES PATENT GFF ICE HIGH-'FREQUENCY DIATHERMI APPLICATOR Frederick Walter 'Wanzenberg "Chicago, Ill., fassignor Ato The Burdick Corporation, Milton, Wis., :a corporation kof Delaware Application November 27, 1946, Serla'lNo. 712,656

8 'Claims (Cl. 12S-H405) The present invention relatesto 'a vhigh frequency diathermy applicator or, as it is sometimes called, an electrode, which lis particularly designed for use in `diathermy treatment of individuals.

The applicator disclosed and claimed herein is an improvement over the applicator ydisclosed and claimed in the contemporaneously filed application of Oscar R. Bowers which is assigned to the assignee of this application. Y

The primary object 'of the present invention is the provision of a new and improved highl -frequency diathermy applicator characterized by vease of adjustability, efficientl operation, vand structural features making it easy to manufacture and contributing to its durability.

Another object of the presentfinvention is to provide a new and improved sectional-ized 'high frequency diathermy applicator including afsingle unjointed coil distributed over the area pf the applicator.

A further object of the 4present invention is to provide an applicator of the character set -forth in the preceding paragraph wherein the sections are hinged and the unitary-coil -is la 'hollow woven flexible tube which lexes or' moves a hinged manner with the various sections.

A further object of the present invention Yis to provide a new and improved adjustable diathermy applicator so lconstructed and arranged that it is frictionally held in its various positions of adjustment.

Other objects and advantages ofthe present invention will become vapparent from "theA ensuing description of an embodiment thereof, 'in the course of which reference is lhad to the accompanyng drawings, in which:

Fig. 1 is a top plan view, partly broken away, 'illustrating an applicator constructed in accordance with the invention;

Fig. 2 is a longitudinal transverse cross sectional view taken along the liner 2-2 rof Fig. i;

Fig. 3 is a side elevational view;

Fig. 4 is a transverse `cross sectionalv'iew taken 'along the line 4-4 of Fig. 1;

Fig. 5 is another transverse cross sectional View taken along the line k5--5 of Fig. 11;

Fig. 6 is a 'fragmentary `enlarged top plan view, partly broken away and with parts omitted, of

'the center sectionoi the applicator:

Fig. 7 is a 'fragmentary yenlarged cross sectional View taken along the line l-'I of Fig. 3;

` Fig. 8 'is an lenlarged fragmentary cross s'ectional view takenalong the line '8--8 of Fig. 1';

Fig. 9 is an end elevational view `of one' loi a nmnber of vcable holding clips;

Fig. 10 is across sectional view'taken along the line IG-I of Fig. v9; l

Fig. 1'1 is a view taken along 'the line l'i---H .of Fig. l 'and illustrating a bracket associated with the rrcenter `section Vof the applicator; and

Fig. 12 is a viewfon a'reduced scale, showing the applicator adjusted to presenta concave inner face for the treatment Vof a curved portion 'of 'a patients body.

The high frequency applicator illustrated in the drawings isjlndicated Aas a whole by reference character 10; It is characterized by a novel 'sectionalized construction including va center section l2' and side sections I4 and f6', which are of siniilar but opposite construction 'for attachment "to V'opposite sides of the center section, and kneesections I8 which connect the 'end sections 'to the center section. The various sections are made of some 'suitable insulating material, preferably Bakelite, and 'they may be-constructed 'in suitable manner, as by casting.

lOne of the main features ofthe Vpresent invention resides in the 'use of Ava single unitary but unhinged high frequency coil 20 housed within'the multiple section housing. Thecoil lcontains a relatively Vfew turns which are' distributed over the major portion Yof the lapplicator to' provide uniform distribution of the 'diathermy current. The coil is located near the inner face voi Vthe applicator to increase its eectiveness and the `coil is of a character such a's' to flex or `move in hinged manner 'with `means yhingedly supporting |the sections of 'thesappl-icator relative to each other'.

Inrorder that the'coil maybe 'utilized asiahinge, it is of ilexible construction and preferably'a hollow bronze woven'e'xible 'tube of a type obtainable Afrom `the `Chicago 'Metal Hose 'Corporation by which 'it is lordinarily used asja metal hose covcring. This materialv hasy suiiicient 'conductivity to enable it to be used as a1coridl'ictl'cir rf'ort'lie diathermy ycurrent and, surprisingly, lit has su-ici'ent fiexibility to be -iiexed or bent over the range of y:'audfiustability lof fthe applicator' without undue pr -excessive deformation in thefregions where jit exes. The manner in which the c'able is supported by the cable supports 2| to insure reliable operation will be described later after consideration of the construction of the various sections of the applicator.

The center section |2 includes a main center section member 22 by means of which the applicator is supported from a holder 24 which may form a suitable handle for attachment to the diathermy apparatus. The handle is adapted to be secured in a recess 26 formed centrally within a dependent boss 28. The handle is secured to the center section by a screw 30 passing through a central sleeve 32 located in a central aperture in the center section member.

In accordance with another novel feature of the present invention the coil supports 2|, which are made of a suitable insulating material, are held in place by means considerably facilitating assembly of the applicator. This means includes the peripheral flanges 34 at the lower ends of the supports which are engaged by a center section lower plate 36, thereby to hold the insulators in place. The lower plate is prevented from moving upwardly by sleeves 31 surrounding the two center posts 38, which are tapered and circular in cross section and formed integrally with member 22.

The center section includes also an upper center plate 48 adapted to be secured to the main center section member above the coil. It is so secured by a plurality (preferably four) screws 42 passing through it and threaded into a corresponding number of the posts 38.

The center section is also provided with oppositely disposed guiding brackets 46 of a construction illustrated best in Fig. l1. These brackets have inwardly extending anges 48 spaced a short distance above the upper plate 4U for the purpose of receiving an inner face shield 50, which constitutes another of the features of the invention.

The brackets are secured to the main center section by sunken screws 52 covered by plugs 53. The brackets are also provided with rounded inwardly extending bosses 54 (see Fig. 1) receiving semicireular grooves S in the shield to prevent longitudinal displacement of the shield relative tothe center section.

The side sections I4 and i6 are substantially alike and, therefore, only one, the end section |4, will be described in detail, although like reference characters will be applied to like parts of each. It includes a main side section member ,v60 having side walls 62 and an end wall 64 provided with a suitable grill work 66 to provide ventilation assisting in cooling the applicator in use. The hanged coil supports 2| are held in place by a lower plate 68 which in turn is held in place by the spacers having reduced ends 'l2 projecting through apertures in the plate and abutting against the bottom. The spacers are secured by screws 14 which also hold in place the upper plate 'I6 against which the shield 58 rests. The lower plate 68 is additionally held in place by the screw 'l1 passing therethrough and threaded into the bottom wall.

The shield 58 is so constructed and arranged that it is movable relative to the side sections. This arrangement is necessary because the housing sections hinge about the axes of exing of the coil, whereas the shield iiexes about an axis displaced therefrom and near the face of the applicator. The relative movement of the shield is guided by opposed inwardly extending flanges 18 on the side sections spaced above the upper 4 plates 16 a distance suicient slidably to receive the shield. The end sections are further provided with a longer iiange which serves to maintain the coil housing completely closed when the applicator is flat, as illustrated in Fig. 2 and also in its other adjusted positions.

The shield 50 constitutes one of the important features of the present invention. It is iexible and. is preferably made of polyethylene. It is guided as heretofore indicated by the flanges 48 on the center section brackets 46 and by the flanges 18 and 80 of the side sections. It is kept in spaced relation to the coil 20 by the top plates of the center and end sections which also serve as a support therefor and serve to heat-insulate it.

In order to facilitate and also to limit the relative movement between the housing sections, the sections are interconnected by the previously referred to knee sections i8. These sections are alike so that here again only one of them will be described in detail. Each knee section includes a knee bracket 82 having a somewhat rounded outer portion 84 fitting into transverse apertures 86 and 88 in the center and outer sections, as best illustrated in Fig. 2. The brackets include also opposed end walls 90 each having a pair of arcuate apertures 92 cooperatively associated with pins 94 secured to the end walls of the center and outer sections to limit the extent of the angular movement of the sections relative to each other. The construction is such that a considerable angular adjustment of the sections relative to each other may be had to accommodate the applicator to smaller and round parts of the patients body.

The coil supports 2| of the knee bracket are held in place by the lower knee plate 98. An upper knee plate 98 is secured to the posts |08 by the screws |82 and sleeves 99 surround the two center posts, which are tapered and round as distinguished from the outer posts, which have flattened sides.

The coil is secured in the housing by the coil supports 2| which have coil receiving clips |04 i secured to their outer ends by the screws |86.

The clips are preferably made of soft copper and are initially of a form illustrated in Fig. 9 better to receive the coil. After the coil has been positioned, the arms of the clip are pressed fairly closely to embrace the coil.

In order to prevent the coil from coming into contact with the upper plates and shield, the clips have a length approximating the width of the upper knee plates 98 and are so positioned at the adjacent edges of the upper plates that the coil itself will not come into contact with the plates, This result is obtained by positioning the clips, as shown best in Fig. 2, with their edges substantially in line wit-h the edges of the upper plates. Consequently, when the applicator is moved to its various adjusted positions, the coil cannot possibly come into contact with either the upper plate or the shield.

The ends of the coil are led to the exterior of the housing through novel clamping means indicated generally by the reference character H0, one of which is best illustrated in Fig. 8. The ends of the coil in the interior of the housing are bent downwardly and surrounded by cable insulating members H2 which take the form of sleeves (see Fig. l). From the sleeves the cables extend through the side sections 68 to which they are secured by the clamping means H0. The clamping means includes an inner tapered brass bushing I4 having a knurled outer surface. The

bushing surrounds the cableand it is in turn surrounded by a rubber covering ||6 which it securely holds against an annular bushing ||8 having a flange |2 abutting' against the wall 60 its j rubber covering `are -securelyf heldlin place.

.The bushing |2D^is preferably provided'with an vinner taper |22 somewhat greater than the taper of bushing l| lli more effectively to squeezeand hold the end ofthe rubber covering. '1

The housing sections are resiliently held in adjusted position by friction means adjustable by the knobs |24. The frictional holding is provided by springs |26 located Within hollows |28 provided in each of the knobs. One end of the spring bears against the knob and the other against a washer |29 located adjacent the end wall of the housing. The knob is secured to a bolt |30 having a head |32 bearing against the inside of the knee bracket wall so that the spring forces the walls of knee and side or center section brackets, as the case may be, into frictional engagement. The knob is provided with a threaded brass insert |34 and the knob with its insert is held in adjusted position with the spring at the desired compression by a set screw |36.

The housing sections are hingedly secured for angular adjustment relative to each other by the bolts |30 which pass, as just described, through the knee sections and the center and end sections. These bolts are located atY approximately the level of the coil so that the coil will better ex in hinged manner with the housing sections.

From the foregoing detailed description it may be noted that the applicator of the present invention may be constructed readily from suitable materials and that it may also readily be assembled. The main portions of the housing are first cast or otherwise formed, after which the coil supporting insulators are assembled in the various sections along with the lower plates 68 and spacers. The coil is then secured in place by the clips and the ends are clamped in place by the clamping means Thereafter the upper plates i6 are secured by the screws. The shield 50 is then positioned with its ends guidably received in the side sections and thereafter the brackets 46 are secured in place to hold the shield.

In use, the sectionalized housing can be readily adjusted so that its inner face has the desired contour for treatment of the patient. The adjustment can be made easily and the sections are held in adjusted position by the resilient holding means including the adjustable knobs and springs.

The coil is at all times maintained spaced from the upper plates and the shield, and at the same time is maintained at substantially the same position relative thereto so that all portions of the coil are effective in all positions of adjustment. The coil is so held that it does not come into contact with the plates or shield and the coil is cooled by conduction toward the back of the applicator and also by Ventilating air which has access to the interior of the housing through the grill work 66. The shield 50, being made of ilexible material, is readily flexed during the adjustment of the sections of the housing and maintains the housing closed at all times.

The adjustment is limited to the desired range by the pins 94 and slots 92 as hereinbefore described in detail.

While but a single embodiment of the invention has been described in detail, it should be understooaihat .the .dtails thereof; aremct .in-

tended to-ffbe limitative of. the nvention'except inso far .asset forth in the 'accompanying claims.

Having thus described my inventiomf-what I claimas neWa-nd .desire tov ysecure byLetters Patenlh'isz .-1 L i' :111.

1. A high frequencyapplicator including a housing .section having;;a.bac l;wall,; flanged: Vcoil supports mounted insaidjsection the l:flanges disposed toward the back wall, an apertured plate through which the coil-supports extend and abutting against the flanged portions .o f said supports, and means including spacers at least portions of which abut against the plate for securing said plate.

2. A high frequency applicator including a housing section having a back wall, anged coil supports mounted in said section with the flanges disposed. toward said back wall, an apertured plate fitting over said supports and abutting against the flanged portions thereof, spacers including portions projecting through said plate and portions abutting against saidV plate, a top plate located above said spacers, and means passing through said top plate and spacers for securing them to said housing section.

3. A high frequency applicator including a housing section, flanged coll supports in said section, a series of posts in said section, an apertured plate fitting over said supports and posts and abutting against the flanged portions of said supports, and means including tubular spacers fitting around said posts and abutting against said plate for securing said plate in position.

4. A high frequency applicator including a housing section, flanged coil supports in said section, a series of posts in said section, an apertured plate tting over said supports and posts and abutting against the flanged portions of said supports, and means including tubular spacers fitting around said posts and abutting against said plate and a plate seating upon said spacers for securing said plate in position.

5. A high frequency diathermy applicator comprising a housing having a plurality of sections hingedly secured together for relative angular movement, a flexible coil in said housing, a flexible cover for said housing, coil supports in said housing supporting said coil below said cover, top plates supported below said cover and above the coil in the Various housing sections, and means including coil holders secured to said supports for preventing the coil from coming into contact with said flexible cover, said coil holders extending to the edges of the top plates in the regions of flexing of the applicator.

6. A high frequency diathermy applicator comprising a housing having center and side sections hingedly secured together for relative angular movement, a flexible cover, and means including separable brackets secured to the center section having flanges overlying said cover and portions interengaging with said cover for holding and preventing yrelative movement of said cover relative to'said center section.

7. A high frequency diathermy applicator comprising a plurality of open sided coil housing sections hinged together for relative angular movement whereby the open sides may be moved toward and away from each other, and a single piece flexible cover common to the open Ysides of all housing sections, said cover flexing when the sections are moved relative to each other.

8. A high frequency diathermy applicator comprising a plurality of open sided coil housing sec- REFERENCES CITED The following references are of record in the le of this patent:

Number UNITED vSTATES PATENTS f Name Date' Vickre;T 1 -10ct. 19, 1897 Rosenberg Aug. 8, 1911 Bigne1l' .l. Sept. 8, 1914 Hewitt May 27,1919 Wenbach May 6, 1924 Roller 1 Jan. 1, 1929 Bartik May 13, 1930 Gieringer July 16, 1946

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US592030 *Apr 10, 1897Oct 19, 1897 John c
US1000294 *Feb 19, 1910Aug 8, 1911Augustus RosenbergElectromagnetic vibrator for local application to the person.
US1109735 *Aug 23, 1913Sep 8, 1914Alfred Stuart BignellElectric attachment for carbureters.
US1305104 *Aug 12, 1916May 27, 1919 Antenna for wireless distribution systems
US1492821 *Sep 29, 1922May 6, 1924Mendel P WeinbachAntifreezing device
US1697142 *Nov 21, 1925Jan 1, 1929 Material for magnetic apparatus and process of making same
US1758213 *May 26, 1928May 13, 1930Bartik JosefElectrical heating apparatus
US2404283 *Jan 17, 1942Jul 16, 1946Licbel Flarsheim CompanyElectrode for diathermy treatments
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2882904 *Apr 7, 1954Apr 21, 1959Burdick CorpFlexible induction electrode
US3282267 *May 5, 1964Nov 1, 1966William EidusThermoelectric hypothermia instrument
US3457925 *Sep 21, 1964Jul 29, 1969Sybron CorpDiathermy electrode supports
US5857957 *Mar 4, 1997Jan 12, 1999Lin; Vernon Wen-HauFunctional magentic stimulation of the expiratory muscles
U.S. Classification607/155
International ClassificationA61N1/06
Cooperative ClassificationA61N1/06
European ClassificationA61N1/06