Improvements in Ecraseurs for Veterinary and Medical Surgery.
Year: 1898

page_text: Date of Application, 31st Aug., 1898
Complete Specification Loft 16th May 1899-Accepted 31st Aug
1899
PROVISIONAL SPECIFICATION.
Improvements in Ecraseurs for Veterinary and Medical Surgery.
I, JAMES GARCIA MOSCROP, of 548, Fulton Street, Pullman, Chicago, Cook
County, State of Illinois, United States of America, Medical Student, do hereby
declare the nature of this invention to be as follows:-
My invention has for its object, to construct an ecraseur for uses in veterinary
and medical surgery, having greater power and to operate more easily and
effectively with one hand than former ecraseurs.
An object of my invention is to provide for holding the ecraseur with one
hand, and at the same time bringing the fingers of the said hand into position
for operating the drum driving handle to wind the snare. I also provide for
throwing the movable handle and the drum and ratchet operating dog with a
single spring fastened to the movable handle.
The usual methods of holding ecraseurs or snares for operating in veterinary
and medical surgery have heretofore chiefly been with two hands. My invention
is designed to be operated by one hand only, and to attain this by providing an
ecraseur consisting of an ecraseur-tube-carrying-handle, having ecraseur-tubes
attachable thereto and being slotted or cut away at the large or head end, to
admit the journalling therein a snare-winding-axle or drum provided with a
ratchet wheel at each end, with suitable means provided for attaching the wire
or chain snare thereto. A movable handle pivoted to the under side of slotted
end of the tube-carrying-handle provided with a dog, pivotted to the inner side
of said handle, having two limbs projecting upward to engage and operate said
ratchets, and to force the wheels around when the pivoted handle is drawn toward
the tube-carrying-handle, thus winding the wire or chain snare upon the axle
or drum, and thereby drawing into the mouth of the tube the loop of the snare
with much easier and greater power than former ecraseurs or snares.
To make ready for practical operation both ends of a short wire or chain may
be run through the tube from its mouth to its base, thus forming a loop or snare,
said ends to then be secured to the drum by means of a hole or hook or other
suitable means.
The base end of said tube is then inserted in the head or slotted
end of the tube-carrying-handle, which is grasped between the thumb and the
palm of the hand and thereby firmly held for directing the snare to the place
required and is held perfectly still while the fingers of said hand are operating
the movable or pivotted handle, and thereby winding the snare on the drum
and drawing the loop into the mouth of the tube, and in this way the strength
of all the fingers of the hand can be exerted in winding the snare.
The free end of the movable handle is forced' away from the tube-carrying-
handle by a spring fixed to said handle, and at the same time the said spring
forces the dog against the ratchets, when the pivotted handle is drawn toward
the tube-carrying-handle to wind the snare.
A spring-pressed-pawl is mounted on the upper side of slotted end of the tube-
carrying-handle to engage the ratchet wheels, to hold them from rotating and
releasing when they have been forced around by the dog to wind the snaro

page_text: thereon. But the snare may be released as desired and unwound from the
drum or axle, by pulling with the thumb upon a small handle attached to the
upper side of said spring pawl to withdraw it from the ratchet, and thereby allow-
ing the wheels and the drum to reverse.
The several ecraseur-tubes may be of different sizes and the openings at the
mouths may be oval or square (as required) to admit the wire or chain forming
the loop of the snare and to hold it in a given plane to readily place it around
the part to be severed, and when placed in the tube-carrying-handle for opera-
tion the mouth of the tube will be on a direct line with the periphery of the
drum or axle, thereby allowing the snare to extend direct from the mouth through
the tube to the drum, and in this way greater power can be obtained.
The various parts of this instrument will be fastened together will milled head
thumb screws or pins, for pivotting purposes, so as to be readily operated to
detach the parts for cleaning or asepticising.
The drum or axle of this instrument may be constructed with one or two
ratchet wheels.
Doted this 201 love of tuanat 1900
COMPLETE SPECIFICATION.
Improvements in Ecraseurs for Veterinary and Medical Surgery.
I, JAMES GARCIA MOSCROP, of 548, Fulton Street, Pullman, Chicago, Cook
County, State of Illinois, United States of America, Medical Student, but at
present at Castle Carrock, County of Cumberland, England, do hereby declare
the nature of this invention and "in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
11
My invention has for its object, to construct an ecraseur for uses in veterinary
and medical surgery, having greater power, and to be operated more easily and
effectively with one hand than former ecraseurs.
An object of my invention is to provide for holding the ecraseur with one
hand and at the same time bringing the fingers of said hand into position for
operating the drum driving handle to wind the snare, I also provide for throwing
the movable handle and the drum and ratchet operating dog with a spring
device suitably fastened to the tube-carrying-handle.
The usual method of holding ecraseurs or snares for operating has hitherto
been with two hands, which is a very objectionable feature in such surgical
operations.
My invention is designed to be operated by one hand to overcome this dis-
advantage, I therefore provide an ecraseur consisting of an ecraseur-tube-carry-
ing-handle with tubes attachable thereto, and slotted or chambered to admit
the journalling therein, a snare-winding axle or drum provided with a ratchet
wheel thereon, with suitable means provided for attaching the wire or chain
snare thereto, a movable handle pivoted to the underside of the tube-carrying-
handle provided with a dog pivoted to said pivoted handle to engage and operate
said ratchet, when the pivoted or movable handle is drawn towards the tube-
carrying-handle, thus, winding the snare upon the drum and drawing into the
mouth of the tube the loop of the snare with greater power and ease than former
ecraseurs or snares, to make my invention more fully understood I have appended
hereonto one sheet of drawings of which
Fig. 1. is a side elevation with tube attached
Fig. 2 is a longitudinal section of the same
Fig. 3 is a plan view of a portion of Fig. 1.

page_text: Fig. 4 is an enlarged sectional view of a portion of Fig. 2.
Referring to the drawing A indicates the tube-carrying-handle, slotted or
chambered to admit the journalling therein the drum and ratchet wheels c. c.
and carrying the ecraseur tube B. C, indicates the snare-winding axle or drum
with means for attaching the wire or chain snare thereto, and provided at each
end with a ratchet wheel cc, and journalled in said handle with its periphery
in line with the axis of the bore of the tube-so that the snare D, extends direct
from the periphery of the drum or axle through the tube, the main body of
the drum is below the axis of the tube, E indicates a handle pivoted to the
underside of the tube-carrying-handle A, suitably grooved out on the under-
side to admit the pivoting therein of the dog F, which engages the ratchet
wheels c c.
G indicates a spring fixed to the handle A, and engaging the
dog F to force the same against the ratchet wheels, and at the same time to force
the free end of the pivoted handle E. away from the handle A, the dog F and
the spring G may be made of one piece, forming a one-piece dog and spring
suitably fixed or pivoted to the handle E, (if desired). H indicates a spring
pressed pawl or catch fixed to the handle A as shewn so as to engage the ratchet
wheels cc, to hold them from releasing the snare D. h indicates an upwardly
projecting handle or thumb catch for withdrawing the pawl H, away from the
ratchet wheels by pressing upon said handle with the thumb, to allow the snare
to unwind from the drum. The movable handle E, is preferably pivoted to the
handle A as shown. In order to readily detach the parts of the instrument for
asepticising after operation, I fasten them together with set screws which form
the pivots 1, 2, 3.
The screw 1, pivots the handle E to the handle A, screw 2 pivots the dog F
to the handle 1, screw 3 is the pivot upon which the axle or drum rotates,
these pivots are screw threaded at one end, outside the bearings and such
threaded part screws into one check of the chambered end of the handle A,
screw 4 indicates a milled head thumb screw for holding the tube B, in the
handle A, 5 is a screw for holding the spring G and 6 is the screw for holding
the spring pawl H.
B indicates an ecraseur tube having a longitudinal slot b, cut through the
wall from its base end to as near the mouth as required for the purpose of sliding
back and forth a small thumb catch or pin a, projecting therefrom which is
secured to a solid piece of suitable metal C slightly flattened at each end, and
which slides on the inside of the tube B, with suitable means provided at such
ends for attaching thereto the snare D, and other suitable wire or chain, e, for
winding on the drum C. The sliding piece C may be withdrawn from the tube
by removing therefrom the snare D, and the drum winding wire or chain e,
and by forcing the thumb catch or pin a, out of the slot at the base end of the
tube, the tube may then be used without the sliding piece if desired, by using
a continuous wire or chain from the mouth of the tube to the drum. The drum
is provided with a ratchet wheel at each end, so that the power will be exerted
equally, and giving equal pressure on its bearings. But it is evident the drum
or axle may be constructed with a ratchet wheel at one or both ends.
The operation of the instrument is as follows:-The tube-carrying-handle A
will be grasped between the thumb and the palm of the hand of the operator,
and the fingers will then be brought beneath the pivoted handle E, the tube will
be inserted to the desired point and the snare brought into the operative position,
and thereupon the operator will operate the handle E, by means of the fingers
and will draw the free end of the handle E toward the handle A, thus forcing
the dog F, upward and rotating the drum to wind the snare thereupon, if more
than one movement of the handle E is required, the fingers will relax to release
said handle E, and the spring G, immediately forces the free end of pivoted
handle E, away from the handle A, and at the same time the pawl H holds the
drum from rotating to release the snare, and the operation will continue until
the part to be removed has been severed, this can be done much quicker than

page_text: with former ccraseurs or snares, and greater force exerted if required. The
instrument is then removed and the snare is released from the drum, by pressing
upon the handle h, with the thumb, and thereby withdrawing the pawl H away
from its engagement with the ratchet wheels. The loop of the snare D is then
forced out of the mouth of the tube by pushing upon and sliding the thumb
catch a toward the mouth of the tube.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. An ecraseur comprising a handle carrying an ecraseur tube; a suare-winding
axle provided at one or both ends with a ratchet wheel; and journalled in said
handle with its periphery in line with the bore of the tube, a dog pivoted to said
pivoted handle and engaging said ratchet wheel or wheels, a spring fixed to the
tube-carrying-handle and engaging the dog to force the same against the ratchet,
and to force the free end of the pivoted handle away from the tube-carrying-
handle, substantially as hereinbefore described and shown in the accompanying
drawings.
2. An ecraseur comprising a handle carrying an ecraseur tube, a snare-wind-
ing-axle provided at one or both ends with a ratchet-wheel, and journalled in
said handle with its periphery in line with the bore of the tube, a handle pivoted
to the tube-carrying-handle, a dog pivoted to said handle and engaging said
ratchet wheel or wheels: A spring fixed to the tube-carrying-handle and engag-
ing the dog to force the same against the ratchet and to force the pivoted handle
away from the tube carrying handle, and a spring-pressed pawl mounted on
the tube carrying handle to engage the ratchet wheel or wheels and provided with
a handle for withdrawing it from said ratchets, substantially as herein before
described and shown in the accompanying drawings.
3. The combination with a handle carrying an ecraseur tube and having a
snare winding axle with a ratchet wheel or wheels thereon, of a movable handle
pivoted to the tube-carrying-handle and provided with a dog to operate the
ratchet, whereby the tube-carrying-handle can be grasped between the thumb
and palm of the hand while the fingers of said hand are in position for operating
the movable handle, substantially as hereinbefore described and shown in the
accompanying drawings.