US1793463A - Handle for instruments for making examinations - Google Patents

Description

Feb. 24, 193.1. w. J. CAMERON HANDLE FOR INSTRUMENTS FOR MAKING EXAMINATIONS Original Filed Sept. 4, 1924 fao e fas Patented Feb. 24, 1931 YWILL '.fr. cAMEnoN, or CHICAGOQILLINGS i l HANDLE FonINsTnUMnNl'rs FORMAR-ING EXAMINATroNs;

. Application meeseptember 4, 1924, serial NQ'. 735,973, neuem@ YFebruary e, 192s, n i

iMy Vpresent invention relates to arliandl" for-instruments used mmialnng surgical, den,-

- tail, or. optical examinations, inspections and n diagnoses. More particularly my present in- :ly ventio'n has reference to a handle that maybe removably secured ,to an ophthalmoscvope, retinoslcope or ,other optioalinstrument, orto a speculum orsimilar surgical instrument, so

that the, operator may readily examine tis- 10k sues remote from externalobservation. rlhe construction ot' this handle is such kthat' the tissue under investigation will be illuminated by .the lrays ofa miniature bulb orlamp which rays are; magnified through a lenticular ele 15 ment in theend of ,the handle. and with which the rays maybe focused upon the part underiinspection. .r Y Y Y The primary object .of ,myl invention rel sidesvinithe provision of a handle wherein ils Carried the miniature bulb'or lamp` in `a socket element'` andwhich is-,adaptedrtoube rotatedg 'upon its :axis ,andomay be bodily moved longitudinally by means `of aV control elementfthat is operableifrom the exterior ofthe handle. -Anotherobject of my inven-y tion `resides in providing ahandle structure that may be readily yattached to'or vdetached from the surgical. or 4optical, instrument and Which effectively coacts ,therewith so4 asto until the incandescent lamellt' therein' ,is ,-.SO

dis-posed Withfrelaton t0 thelniagnifyes lens V,andthe pr'ojeetingretlector of 'an ophthalmascope, and'lam also able to"k move thebulb Y longitudinally ytowardand'qaway from the lens, 'until ythe desired l character of; illumination is obtained. Furthergobj-ectslof my invention residel in providing a structure of o0 Y 1 ,preizfer ,to` carry` outmy invent-ion` to illuminate ,the `area under observation. In' ophthaln1osc`opes, it is desirable to provldean Y thel above ,character that is"entreinely compactacomblish the aforesaid objects inl substanl Fig 2. isy fa, rear viewot the structure illustrated in Fig'gjureY l' but in'assembled Jform and' Ihaving a portion of the handle and ophthalmoscope' socket in V long itudinalk see-v tion.

elevation of an d Fig?? is a. longitudinal axial sectionof a' fragmentaryv portion of' myv improvedhandle. drawn slightly enlarged. I'

dilig.,vr 4c, is an enlarged s j Y transverse section tak n on :line 4 4 ofFigure l'gjlo'olringin: 'the direetionot'thearrows.v `f s -v Y 1 Fig. 5'is asection on line' 5T5 of Figure 3.

Fig; 6A is a `fragmentary *longitudinalsec-4A tion showing the frictional means in conjunction with the adjusting slide.` j

.In thedrawings Iha've employed the same reterencecharacters to designate like parts wherever they oceur throughout the' several views, and by referring toFigures 1 and 2 it will `beseen my invention vcomprises a'hanf die tha-tlvmay be removablyassembled with an 1 instrument for makingsurgical, dental or 0ptioal fexaniinations,V and' vinA the present in'- stance l have illustrated the s'tructurein conllectolfl,` with; .an optical instrument 0f the retieoseeue time fier' ,the :purpose of Simplicity! The'retlosopeitoverenfarmsne Portion of my present invention, exceptins'oian as 1t combines with the idea or invention of the provision 'of the: relative adjust/ability i of the lamp and the-'lens'-iwith'respect to each other in apl'u'rality .ofdiicerent directionsto control" and. position :the beam of light ot iibbo'nlformation: with rfespect to the object upon whichjitis direc'ted,yas retinoscopes genf, y eral-lyy are" understood to embody ahead `hav-r ing'a sight opening, a light source, andanv inclined mirror or reflector interposed. between the liglQL-t andftheobject; It' is designatedl lli by the structure indicated by the numeral which illustrates a retinoscope head and has ,upon the rear face of itssupporting plate an elongated tubular element or socketl l1, the upper end of which latter is closed by a lenticular element12 in axial alinement with an angularlydisposed reflector VelementV or mirror 13. The rays in the formof a'ribbon ofV disposed at an angle to each other. Whenl ever the beam et incidence 1s rotated upon its axis the beam of reflection is correspondingly rotated upon the axis. In order to permit inspection ot the area illuminated by the ribbon of light the usual retinoscope or' Ophthalmo- Vscope sight or sightaperture 13EL is provided in the mirror so that itis coincident with or in axial alinement with the light beams or at least with the beamof reiiection in order that the latter beammay be viewed through the mirror. rilhe retinoscope head 10 is providedl with a viewingv or sight laperture 10aA in axial alinementvwith the beam of reflection and the mirror aperture 13a'. rlhe lower end-of the socket 11 is provided with a slit 14 extending longitudinally inwardly from the edge thereof so as to permit of a slight spring action` when the end of the'handle member is inserted in said socket. y V

The handle preferably comprises a barrel 15-of tubular form in cross-section, that is preferably elongated, as shown in thek drawings, and the upper portion owhich is slightly reduced in diameter to provide an annular shoulder 16 against which the lower edge of the socketV 11 abuts when the handle isinserted therein. Thisbarrel is formed oflhard rubber, bakelite or similar insulating Ysubstance. The bore at the reduced endof the barrel is also slightly reduced asat 17 Vto prof: vide a bearingin which ahollow metal stem 18 is mounted to slide lo*ngitudinallyl therein, and ,the outerfendofthe saine, whicliprojects outside the barrel 15, is, provided with anv enlargement or'head 19 that is of less diameter than the interior diameter of the socket element 110i the instrument so Vthat'it will not interfere or contact therewith. This head or enlargement19 isl hollowfand' is ,internally threaded to provide an electrical socket connectorinto which is screwed a miniature lamp or bulb20 oiiany wellknown or suitable Y typehavingasingleiilamenttoI project. a beam in the form of a narrow line, or a transversely condensed beam or ribbon oflight. The opposite end of the hollow stem 18 is exteriorly threaded and hasscrewedithereona block 21 Y of insulating material.v The-insulating block 21 is providedwith a'central aperture -or bore 22, and a longitudinal groove or channel 23 is formed Vupon the edge of said blockV sothat the ends of the electrical conductors 24 may be positionedin the respective aperture and groove, one of which (that lying in the groove 23) being soldered or otherwise secured to the adjacent end of the metal stem 18, while the other (that passing through the central aperture orbore 22)` extend'sthrough the stem and" is connected to the terminal in terminals or posts 25 are of suliicient length to project beyond the end of the barrel, as seenin Figures 1, 2and 3 of the drawings, so

thatwhen the electrical connection is made the miniature plug having cylindrical terminals may be inserted into the end of the barrel with the terminals telescoping the posts or pins 25 in the well-known and'V usual manner. The barrel adjacent the inner end of the spindle 18 is provided with a lateral aperture 27 that is preferably of the'desired height and width to permit'of the engagement of the spindle by meansot anexterior element that is 'connected therewith so that said spindle may berotated and moved longitudinally whenever desired. Surrounding and at-all times closingV the aperture 27 is an elongatedA sleeve or slide 28 ,that rictionally engages the outer surface'of the barrel 15 and f a which is connected to the spindle 18 by means of' a screw 29 that'passes through said sleeve and'is screwed into a tapped opening in the insulating block21 at the adjacent lower endl of the spindle. In this meansthe sleeve-28 may be slidV longitudinally upon the barrel and in ,any position or any time it may also be rotatedand the spindle 18 carrying the lamp or illuminating element 20 willbe correspondingly moved so that a widerange of adjustment is possible within the limits of the aperture 27 in the barrel. In using the instru-l ment, the retinoscope is held before the patient in the usual manner so that the iiat beam or ribbon of light from the'lamp will pass through the lens to themirror 13 from which itis reflected into the eye to be examined,the operator making his observationv through the sight l10a and l13a in the usual way. Thus it will be seen that the projected beamer ribbon of light may be vajgip'liedvto Iany selectedmeridian ofthe eye and by'turningthesleeve 28 the beam or ribbon of light may be placedat i right angle to the meridian selected. It willk permit the sleeve 28 to be Vturned half way around or one hundred andeighty degrees. Vhen the sleeve-28 -is moved-longitudinally.

of the handle the transverse-dimensions of the L A beam or ribbon of light is varied, since by such movement the distance between the lamp filament and the lens is varied.V The slot 27 determines both the longitudinal and the rotary movement of the lamp filament, and this slot is so proportioned that when lthe operating sleeve is at the upper end of its movement the rays passing through the lens will be di'` vergent and produce a plano mirror effect. Vhen theV sleeve is moved in thegopposite di-` rection or downwardly the rays become con-V vergent and focus along `a line so that the-ribbon of light becomes transversely condensed andV narrowed. The longitudinal extent of the slot 2T is such that the lamp may be movedaway from the lens sufiiciently to pro-Vr duce the effect of a concave mirror retinoscope. In order to provide additional friction between the barrel and the sleeve 28 I have formed a shallow groove30 in the outer surface of the barrel 15 in which is positioned an outwardly bowed spring element 31 that bears against the interior surface of the sleeve 28 and creates sufficient friction to maintain the parts in their divers adjusted positions.

From the foregoing it will be seen that the Y tubular element of the examination instrument maybe mountedl upon the handle, and, when the slide 28 is moved longitudinally upon the barrel,rthe lamp or bulb will be moved longitudinally within vthe tubular ele ment 11 so as to adjust the filament of the lamp with respectto the lenticular closure 12 and this adjustment may be both longitudinally'. toward and away 'from the lens e a stein slidably and rotatably mounted in the bore of vsaid extension and projecting above and below said extension, an enlarged head at each end'ofsaid stem to provide limiting stops therefor, a sleeve surrounding the body at .the opening and connected tothe inner head through said opening for rotating and reciprocating saidvstem, a lamp carried by` the outer head,and yieldable friction means interposed between said sleeve and body for maintaining the former in its divers posi-V tions of adjustment.

" 2. A device of the kind described compris-IV ing a tubular body having an elongated opening in one side, yan extension havin a bore of less diameter than the bore of said body, a stem Vmovableiin the bore of said extension and projecting above andbelow saideXt-ension, enlarged-heads at the ends of said stem to provide limiting stops therefor, a slide movable upon kthe exterio'rof the vbody at the opening and connected to the inner head through saidl opening for moving said steml ink a plurality of directions, a lamp carried by the outer head, and a tubular element assembled with said KVextension adjacent the lamp, the arrangement ofthe parts beingf such that the lamp may be rotated and moved up and down within said Vtubular element.

Signed at Chicago, county of Cook andv State of Illinois.

A WILL J. CAMERON.

d 'flee fies or in a rotary direction so that the'` filament of the bulb will be'properly positioned to directa fiat beam of light through the lens mirror 13 and from thence upon the tissue under inspection. `The handle element `is which will `direct vit ltoward the reflecting f readily removable fromthe instrument, and j the same iscapable of use upon several instruments of diiferent types andin the case of a speculum the lamp may be slightlyv with- Y drawn below the line ofvision through the structure and will not interfere with the observation of the parts under inspectiony or f: hinder thefuse of instruments thatmay be l inserted through the speculum. What I claim is l. In aV handle offthe ing in one side, an extension having a bore l dass .deafibed, l tubularbody having a wide elongated openlili

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