U.S. patent number 3,812,847 [Application Number 05/251,303] was granted by the patent office on 1974-05-28 for combination battery handle-case for a pair of attached, outfolding illuminated medical instruments.
This patent grant is currently assigned to Welch Allyn, Inc.. Invention is credited to John D. Connors, William C. Moore.
United States Patent |
3,812,847 |
Moore , et al. |
May 28, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
COMBINATION BATTERY HANDLE-CASE FOR A PAIR OF ATTACHED, OUTFOLDING
ILLUMINATED MEDICAL INSTRUMENTS
Abstract
A pocket-size combination case and battery handle for attached
otoscope and ophthalmoscope heads has an external shut-off switch
and contains a swing-out holder for otoscope tips and a battery and
wiring to both instruments. Each instrument may be individually
swung out and rotatably adjusted at its end of the case to a
plurality of operative positions. The electrical connection to each
instrument is automatically made when it is swung out and is broken
when it is returned to the case. Access to each instrument is by a
separate hinged cover over half the case for each, the covers being
alternatively spring biased to open or closed position.
Inventors: |
Moore; William C. (Skaneateles,
NY), Connors; John D. (Auburn, NY) |
Assignee: |
Welch Allyn, Inc. (Skaneateles
Falls, NY)
|
Family
ID: |
22951358 |
Appl.
No.: |
05/251,303 |
Filed: |
May 8, 1972 |
Current U.S.
Class: |
600/200; D24/137;
362/253; 600/249 |
Current CPC
Class: |
A61B
1/227 (20130101); A61B 3/1208 (20130101) |
Current International
Class: |
A61B
3/12 (20060101); A61B 1/227 (20060101); A61b
001/22 () |
Field of
Search: |
;128/3,2,6,9,11,16,23
;240/6.4,6.46,10.6,10.66 ;351/6,16,38 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Laudenslager; Lucie H.
Attorney, Agent or Firm: Bruns & Jenney
Claims
We claim:
1. A combination battery handle and case for a plurality of
illuminable diagnostic instruments, the case having a main body
portion and hinged cover means therefor, a plurality of instruments
normally contained in the interior of the case, each instrument
having its own lamp, the instruments being pivotally secured to the
body portion and foldable outward therefrom and back therein upon
opening the cover means, the case having holes through which the
instruments project when folded outward, the body having secured
therein battery means and means for electrically connecting the
battery to the lamps of the instruments when the latter are folded
outwardly, the case being adapted to operate as a handle when one
of the instruments is folded outwardly for use and at the same time
serving as a case for the other instrument.
2. A pocket size combination battery handle and case for a pair of
medical instruments comprising an elongated body portion, a spaced
pair of upstanding pillow blocks adjacent each end of the case and
secured thereto, a pair of medical instrument heads each having a
neck portion, a slip-ring band rotatably secured around each neck,
each band having a pair of diametrically opposite metal trunnions
projecting therefrom and receiving in cooperating holes in
respective pillow block pairs whereby the heads may be
alternatively folded into the case and folded out to project from
the case end, the heads in folded out position being rotatable
relative to the case, and a cupped cover hingedly secured to the
body for enclosing each head in the case when folded therein.
3. A pocket size combination battery handle and case for a pair of
illuminated diagnostic instruments comprising an elongated body
portion, a spaced pair of upstanding metal pillow blocks spaced
from each end of the case and secured thereto, a pair of diagnostic
instrument heads each having a neck portion and a lamp bulb
therein, a metal slip-ring band rotatably secured around each neck,
each band having a pair of diametrically opposite metal trunnions
projecting therefrom and received in cooperating holes in
respective pillow block pairs whereby the heads may be
alternatively folded into the cae and folded out to project from
the case end, a cupped cover hingedly secured to the body for
enclosing each head in the case when folded therein, battery clips
secured to the body portion, a battery in the clips, each clip
having a battery contact for electrical connection to a different
battery end, one battery contact being electrically insulated from
the clip and electrical connection means secured to the body
including a switch operable from outside the case, the connection
means adapted for completing an electric circuit through the switch
to the respective heads when the head is folded out of the case,
each instrument neck having a tubular metal member electrically
connecting the trunnion band to one contact of its lamp and each
neck terminating in a cupped metal cap electrically connected to
the other lamp contact and insulated from the remainder of the
neck.
4. The combination battery handle and case defined in claim 3
wherein the electrical connection means includes for each head a
first leaf contact for connecting one side of the battery to one of
the trunnions and a second leaf contact adapted to be in electrical
contact with the metal cap of the neck when the head is folded out
and to be in contact with a nonconductive portion of the neck when
the head is folded in, whereby the head cannot be illuminated when
folded in the case.
5. The combination battery handle and case defined in claim 4
wherein the electrical connection means includes a circuit board
secured to the body portion, the board having a first trail of
metal coating on the board surface from end to end electrically
connecting both of the first leaf contacts with one of the battery
clip contacts, and a second metal trail coating electrically
connecting both of the second leaf contacts with the other battery
clip contact through the switch, the board having an island of
metal coating electrically connected to said other battery clip
contact, and the switch including a metal contact member movable
from a first position electrically connecting one of the metal
trails with the island to a second position breaking its electrical
connection between the trail and the island.
6. The combination battery handle and case defined in claim 3
wherein the case has a hole of a regulare polygonal shape
therethrough at each end when the cover is closed, half the hole
being through the body and half through the cover, and each
instrument neck has a cooperating reversely conforming polygonal
shaped flange therearound adapted to be contained in the case hole
when the cover is closed and the head is folded out, whereby the
instrument may be secured in one of a plurality of radial positions
with respect to the case.
7. The combination battery handle and case defined in claim 6
wherein each cover and each end of the base has a substantially
semiannular dust seal of resilient material secured thereto
adjacent the regular polygonal hole, the seals being positioned
when the cover is closed to close about an instrument neck when the
instrument is folded out and to close about the cupped cap contact
when the instrument is folded in, thereby keeping out unwanted
debris when the case is transported in a coat pocket.
8. The combination battery handle and case defined in claim 6
wherein each cupped cap is slotted and in threaded contact with the
instrument neck, and each lamp bulb is slideably retained within
its neck by the cap, whereby the bulbs may be easily replaced by
removing the cupped caps.
9. The combination battery handle and case defined in claim 3
wherein each cover hinge has a C-shaped leaf spring biasing a
portion of each spring half toward the other, whereby the cover is
biased closed after it has been closed and biased open after the
cover has been fully opened.
10. The combination battery handle and case defined in claim 3
wherein each slip ring band has a portion projecting away from the
body portion when the instrument is folded in, whereby a ringer
placed on the projecting portion and moved toward the adjacent case
end tilts the instrument away from the body portion for folding the
instrument out of the case.
11. The combination battery handle and case defined in claim 3
wherein one of the instrument heads is an otoscope adapted to use
disposable speculum tips, the case having a spare tip holder
adjacent the otoscope head, the holder having an elongated member
hingedly secured to the case body at one end, the elongated member
having an annular flange adjacent the hinged end and a pair of
semiannular enlargements at its free end, the free end being
bifurcated and of resilient material, whereby the holder is adapted
to receive a plurality of nested tips therearound, the annular
flange providing a stop for the larger end of the nested tips and
the semiannular enlargements providing a spring detent over which
the smaller distal ends of the tips may be withdrawn.
Description
BACKGROUND OF THE INVENTION
This invention relates to illuminated diagnostic instruments and
relates more particularly to a combination pocket-sized carrying
case and battery handle therefor, the instruments being attached
and foldable outward to operating position.
Pocket-size or miniature diagnostic instruments have heretofore
been known, usually provided with a clip for securing them in the
pocket like a pen or pencil. Kits for pairs of illuminated
instruments, such as an otoscope and an ophthalmoscope, are also
known. Since each requires a battery handle, such kits usually
provide a single handle with interchangeable heads. If the battery
is rechargeable, a recharging unit is provided in the kit.
If a pair of miniature illuminated diagnostic instruments is
needed, each must have a separate battery handle involving
duplication of parts. If a common battery handle is provided, a
time-consuming operation of removing one instrument head and
replacing it with another is required of the user if his
examination requires use of both instruments.
SUMMARY OF THE INVENTION
A single case of a size adapted to fit in a pocket or to be
conveniently packed in a physician's bag is provided with a battery
operatively secured therein and an otoscope head at one end and an
ophthalmoscope head at the other end with wiring from the battery
to each head including a shut-off switch accessible externally of
the case. Two hinged covers are provided, one over one end-half of
the case and the other over the other end-half. Spring means are
provided for each cover for biasing the cover to closed position
or, alternatively, retaining the cover in open position.
Each head has a generally tubular neck portion provided with a pair
of diametrically oppositely projecting trunnions carried on a ring
which is rotatable with respect to the neck. The trunnions are
received in holes in a pair of pillow blocks secured to the floor
of the case and a hole, half in the case end and half in the cover
is provided so that the head may be swung on the trunnions to be
folded out of the case or back in again when the cover is opened.
The hole in the cover and case is made hexagonal reversely
conforming to a cooperating hexagonal flange on the neck so that
the head may be turned to a plurality of positions when it is
folded out of the case and then secured in its selected position
when the cover is closed.
The trunnions project from the neck spaced from its end and to this
end a metal cup-shaped contact cap is threadedly secured, the cap
being threaded on a nonconductive portion of the neck. The otoscope
and ophthalmoscope heads each contain a lamp bulb and the bulb may
be changed by removing the cap and without removing the trunnions
from their pillow blocks.
The wiring within the case comprises a circuit board secured to the
floor of the case, the board bottom surface having what may be
called separate positive and negative copper trails coated on the
undersurface of the board and extending on opposite sides of the
board from end to end. Battery clips are secured to the upper
surface of the board and have contacts, one insulated and adapted
to be electrically connected to one of the copper trails, and the
other grounded to the clips and connected to the other trail for
electrical contact with opposite ends of the battery.
At each end of the circuit board each copper trail is electrically
connected to a leaf-spring type of contact, one being at all times
in electrical contact with one of the pillow blocks and its
contained trunnion, the trunnion ring being in contact with a metal
portion of the instrument neck. The other contact rises
substantially vertically from the case floor so that it is in
electrical contact with the end cap contact at the end of the neck
when the instrument head is folded out of the case and in contact
with a nonconductive portion of the neck when the head is folded
into the case.
The insulated battery contact is electrically connected by a very
short piece of wire to the underside of the circuit board where
there is a copper island separate from the two copper trails. A
sliding switch button on the outer surface of the case floor may be
moved from side to side to bring a bridging contact to a position
electrically connecting the island with one of the trails or to a
positive without electrical connection to the island or trail. To
illuminate either head, the head must be folded out of the case and
the bridging switch must be moved to its bridging position.
The otoscope head is of the type having a speculum portion adapted
for use with a disposable tip. A spare tip holder is provided
alongside the neck of the folded-in otoscope. The holder comprises
a shaft hingedly secured to the case so that it may be folded out
of the case when its cover is open. The holder shaft has a rounded
boss at its free end and this end is split so the tips may be
telescoped together and slid down around the shaft and withdrawn as
needed. The split enlarged end of the shaft provides a spring
detent for the tips so hat the tips cannot fall off the holder
accidentally and the tips may be manually removed one at a time
past this detent.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a case according to the invention
as viewed from the cover side and with both instruments heads
folded outside the case;
FIG. 2 is an enlarged plan view thereof with the head folded into
the case and with both covers open;
FIGS. 3, 4, 5 and 6 are sectional views, respectively, on the lines
3--3, 4--4, 5--5 and 6--6 of FIG. 2;
FIG. 7 is an end view of the case as shown in FIG. 2 but with the
cover closed;
FIG. 8 is a view similar to FIG. 1 as viewed from the switch
side;
FIG. 9 is an enlarged fragmentary sectional view on the line 9--9
of FIG. 2 but rotated 90.degree.;
FIG. 10 is a plan view of the circuit board assembly shown in FIG.
2, partially diagrammatic in that the conductive portion of the
bottom surface is indicated by stippling, the switch contact member
being shown in broken lines;
FIG 11 is an enlarged, fragmentary, sectional view on the line
11--11 of FIG. 8; and
FIG. 12 is an enlarged plan view of the contact member shown in
FIG. 9 as viewed from the right in that figure.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1, the case 15 comprises a bottom half 16 and a
top half consisting of two hinged covers 17 each over the opposite
end halves of the case. An ophthalmoscope head 18 is shown folded
out of the case at one end and an otoscope head 19 is folded out of
the other end. Ordinarily only one head is folded out of the case
at a time in actual use.
In FIG. 2 the case 15 is shown open and the heads folded inside. A
circuit board 20, shown more clearly in FIG. 10, is secured to the
floor 21 of the bottom half 16 and covers the major portion of the
floor. A metal channel 22, seen best in FIG. 10, has battery clips
23 and 24 secured by rivets thereto and posts from the floor extend
through holes 25 and are headed over to secure the channel, clips,
and circuit board to the floor. A battery 26 is secured in the
clips.
Referring to FIG. 7, each end of the case has a hexagonal hole 27
therein, as shown, forme half in the bottom 16 and half in the
cover 17. Spaced from hole 27 each head i supported on a pair of
pillow blocks 28, 28, secured by shanks driven into holes in the
floor 21 and secured therein by adhesive. The heads 18 and 19 each
are supported on a neck around which there is a metal band 29
bearing diametrically opposite trunnions 30 projecting into holes
in the pillow blocks 28. Best seen in FIG. 4, each band 29 has an
upwardly extending projection 31 when the head is folded into the
case. A finger on projection 31 pressing the projection toward the
adjacent hole 27 folds or swings the head up and out of the
case.
Referring to FIG. 9, the neck 32 for the ophthalmoscope head 18
comprises an outer tubular layer of electrically non-conductive
material and an inner tube 33 of metal containing the lamp bulb 34.
A spring clip 35 encircles a portion of the outer contact of the
bulb for ensuring a good contact with tube 33 and a spacer ring 36
of metal encircles tube 33.
A metal contact ring 37 is threadedly secured to the end of tube 33
in contact with spacer 36. Ring 37 is the part on which the
trunnion band 29 rotates and has an annular flange 38 the bank 29
being loosely confined between the end of the tubular neck 32 and
flange 38. A warped or waved copper spring contact washer 39
encircles the ring 37 between flange 38 and band 29, as shown.
An insulator ring 40, of Nylon, is threaded to the outside of the
end of ring 37 and a cup shaped bulb-contact 41 is secured to the
exterior of ring 40 by blunted threads on the interior of the metal
contact cup to give the cup a self-threading grip on the ring 40.
Contact cup 41 is slotted at 42 and contains a spider-like spring
contact 43, shown in plan in FIG. 12, havinja spring tongue 44 in
contact with the center contact at the end of bulb 34.
It will be noted that neck 32 is formed with a hexagonal flange 45
adapted to lie in the hexagonal opening 27 of the case when head 18
is folded out. The other end of neck 32 and the interior of head 18
are not shown since they are shown and described in detail in U.S.
Pat. NO. 3,441,340 issued Apr. 29, 1969 to Moore et al.
The construction of the attached end of neck 46 of the otoscope
head 19, shown in FIG. 4, is substantially the same as that
described for the neck of head 18, the neck terminating in an
insulated cup-contact 41 and having a similar hexagonal flange 45.
An interiorly carried metal tube 47 surrounds the light bulb 48 and
the electrical connections between contact 41 and the central
contact of bulb 48 and between trunnions 30 and the other contact
of bulb 48 are essentially the same as the electrical connections
described in connection with FIG. 9. The interior construction of
head 19 is the same as shown and described in U.S. Pat. No.
3,373,737 issued Mar. 19, 1968 to Moore
Referring again to FIG. 2, upstanding bosses 50 from the floor 21
interiorly adjacent the holes 27 at either end of the case portion
16 form substantially semiannular pockets in which semiannular dust
seals 51 of rubber or similar material are cemented. Similar bosses
provided in the covers 17 house cooperating semiannular seals 51',
as shown in FIG. 7. The seals 51 and 51' close about cup contacts
41 of the heads when they are folded in and about the neck members
32 and 46 when the heads are folded out of the case.
Referring now to FIG. 10, the battery clips 23 and 24 are provided
with spring contact members 53 and 54, respectively. The contact 53
is provided with a dimple at its center for electrical contact with
one end of battery 26 and contact 54 has a contact member 55 at its
center which is electrically insulated from contact member 54 and
clip 24, the member 55 being adapted for electrical contact with
the other end of the battery. Although positive and negative
terminals are indicated on the battery 26, it will become apparent
that the battery may be inserted in clips 23 and 24 as shown in
FIG. 2 or reversed end for end.
As diagrammatically illustrated by stippling in FIG. 10 the
undersurface of the circuit board 20 is divided into two separate
copper coated trails 56 and 57 extending from end to end of the
board and a separate copper coated island 58 adjacent the trail 56.
The insulated contact 55 is electrically connected by a projecting
metal member 59 and a short jumper wire 59' soldered to the
conductive island 58 on the bottom surface of board 20.
Trail 56, at either end of the board, is electrically connected to
an upwardly projecting leaf spring contact 60 adapted to contact
the necks 32 or 46 of the repsective heads when they are folded in
or to contact the respective cup contacts 41 when the heads are
folded out. The trail 57, at either end, is electrically connected
to a leaf spring contact 61 which projects up and then endwise of
the board for insertion in a hole in one of the pillow blocks 28 of
each pair which extends normal to the trunnion hole, as shown in
FIG. 4, so that each spring 61 is in electrical contact with one of
the trunnions supporting each head. It will be understood that each
spring contact 60 and 61 has an eyelet connected by a hollow rivet
to board 20.
It will be noted that the circuit board 20 is shaped at either end
to rovide maximum clearance for the cup-contact 41 as it is folded
in and out and a clearance space is provided along one side for the
comparatively thicker otoscope head 19 when it is folded into the
case.
Case 15 is of electrically nonconductive material, preferably of a
strong plastic such as an ABS resin or similar material. Board 20
is supported on shouldered bosses projecting up from floor 21 and
having reduced pin or stem portions adapted to pass through holes
in the hollow rivets, through other holes 62 in the board or
through holes 25 in the clips and be heat flattened to secure the
board in place. One such hole 62 and its associated stem is shown
in FIG. 11.
As indicated in FIG. 3, and more clearly shown in FIG. 11, the
bottom surface of portion 16 of the case is provided with a sliding
shut-off switch button 65 having a stem movable from side to side
in a hole 66 through the case. A generally H-shaped sliding switch
contact 67, indicated in plan in broken lines in FIG. 10, is
secured to the stem of button 65 by an appropriate screw. The
switch contact 67 has two contact arms 68 alternately in and out of
electrical contact with island 58 and trail 56 as button 65 is slid
from side to side. A double ended detent spring 69 is also secured
to the button 65, each rounded end of spring 69 being engaged
alternately in one of a pair of detent holes 70 formed in the floor
21 as the button is moved from one side to the other. It will be
apparent that when the arms 68 are in contact with island 58 and
trail 56 the switch will be in its "on" position and when the arms
68 do not contact the island and trail the switch will be in "off"
position.
As shown in FIG. 2 and more clearly shown in FIG. 5, covers 17, 17
are secured to portion 16 by hinges 71 whose plates are pressed
into slots formed in the walls of the covers and portion 16 and
secured therein by adhesive. At its center each hinge half has a
portion 72 engaged by a C-shaped spring 73 of the type which biases
the cover 17 closed when in closed position and biases it open when
opened as indicated at 17' in FIG. 5.
Since the otoscope head 19 is of the type requiring a disposable
tip 75, as fully described in U.S. Pat. No. 3,146,775 issued Sept.
1, 1964 to Moore et al., a tip holder 76 is provided in the case
alongside the head 19 as shown in FIG. 2. Referring to FIG. 6, a
hinge member 77 has a flange portion pressed into a cooperating
groove in the case portion 16 and adhesively secured therein. Th
holder 76 itself comprises a post having one end secured to the
hinge member 77 by an appropriate pivot pin, as shown and has its
other end enlarged at 78 and bifurcated, as shown. Adjacent the
hinge member 77, the holder 76 has a tip-contacting annular flange
79. The tips may be nested and slipped down over the holder, the
holder being adapted to carry five tips. A sixth tip may be carried
on the head 19.
When a new tip is desired, the holder 76 may be easily folded
upward by a fingertip placed on the lower edge of the lowermost lip
on the holder and moved endwise of the case. When the holder
projects upward the tip may be easily moved past the retaining
enlargement 78 because of the spring action provided by the
bifurcation.
In operation, either cover 17 may be easily raised by a fingertip
by reason of the notches 80 provided in the lip of the case portion
16 as shown in FIGS. 1 and 2.
Either head 18 or 19 may selectively be folded upward by placing a
fingertip on the upward projection 31 of the trunnion band of the
respective head and moving the projection endwise of the case. The
head may then be grasped and folded completely outward and the
angular direction of the distal end of the instrument may be
adjusted by turning the head in its band 29. Since the flange 45 of
the head and its cooperating hole 27 are hexagonal, six different
adjusted instrument directions are possible when the cover 17 is
closed.
The selected illuminated diagnostic instrument head may then be
used in the manner usual for such an instrument, using the switch
button 65 for turning the illumination of the head on or off as
desired. It will be noted also that, even if switch 65 is
inadvertently left in its "on" position when the selected head is
folded back into the case, the head cannot remain illuminated after
it has been folded into the case because its contact 60 is no
longer in contact with the cupped contact 41 of the head.
Replacement of either of the lamp bulbs 34 or 48 may be made by
inserting a coin in slot 42 and unscrewing the cup contact 41 when
it is in the position shown in FIG. 7.
While the heads shown and described are otoscope and ophthalmoscope
heads, it will be apparent that miniature heads for other
illuminated diagnostic instruments may be substituted or one of the
heads may be replaced by a miniature flashlight head.
By miniaturization and maximum space utilization the case described
above has maximum dimensions in all directions of substantially 5
inch .times. 21/4inch .times. 1 1/16 inch and, fully equipped,
weighs less than 6 oz.
* * * * *