Improvements in Obstetrical Instruments.
Year: 1889

page_text: Date of Application, 24th Sept., 1889
Complete Specification Left, 6th Dec., 1889-Accepted, 11th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Obstetrical Instruments.
1, CHARLES DUNCAN BOBO, of Nevada City, in the County of Nevada, and State
of California, United States of America, Physician and Surgeon, do hereby declare
the nature of this invention to be as follows:-
This Invention relates to an improved obstetrical instrument and consists in a
device designed to be used either singly or in pairs oue by the right hand and the
other by the left hand of the operator as independent members of an obstetrical
forceps the fingers of the operator serving as the handles thereof.
The device, which may be made of German Silver, steel, or any suitable material,
is composed of three loading parts or features; viz. an elongated thimble-like or
socket piece preferably curved in direction of its length with its concave side inner-
mosi adapted to fit the index finger of the operator, a loop or ring attached to said
thimble on its one side near its back end adapted to fit the second finger of the
operator, and a spread forward end piece of any desired shape corresponding to the
acting end of one limb of an obstetrical forceps and preferably of an apertured or
collar-like construction and arranged so as to lie in a plane which is virtually at
right angles with the loop or ring. This forceps end piece may either be an integral
part of the elongated thimble or it may be separately and removably attached thereto
as, for instance, by constructing it with a screw threaded shank adapted to fit a screw-
threaded socket in the forward end of the thimble..
In using the device, ono being applied to the index and second fingers of the right
hand and another to the index and second fingers of the left hand the two combined
virtually form the two main limbs or members of an obstetrical forceps the fingers of
the operator constituting tho handles by which to manipulate thom whereby the
operator has a sense of touch which enables him to know with alsolute certainty
that the instrument is in the proper position and with this knowledge he can avoid
all injury to the mother or child.
Dated this 24th day of September 1889.
COMPLETE SPECIFICATION.
Improvements in Obstetrical Instruments.
I, CHARLES DUNCAN BOBO, of Nevada City, in the County of Nevada, and Siate
of California, United States of America, Physician and Surgeon, 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:
This Invention relates to an improved obstetrical instrument; and consists in a
device designed to be used either singly or in pairs, one by the right band and the
other by the left hand of the operator as independent members of an obstetrical
forceps, the fingers of the operator serving as the handles thereof.
Reference is to be had to the accompanying drawings forming part of this
specification, in which figure 1 represents a perspective view of the device as seen
from its front or inner side; figure 2 a longitudinal view of the same as seen from
its opposite side; figure 3 a longitudinal section on line figure 2; and figure 4
a back end view of the device. Figure 5 is a partly sectional longitudinal view of
the forward end portion of the device in illustration of a modified construction of
the same.
figures.
Similar letters of reference indicate corresponding parts in all the

page_text: The device, which may be made of German silver, steel, or any suitable material,
is composed of three leading parts or features to wit; an elongated thimble-like or
socket piece A, preferably curved in direction of its length with its concave side
innermost, adapted to fit the index finger of the operator, a loop or ring B attached
to said thimble on its one side near its back end, adapted to fit the second finger
of the operator, and a spread forward end piece C, of any desired shape, corresponding
to the acting end of one limb of an obstetrical forceps and preferably of an
apertured or collar-like construction and arranged so as to lie in a plane which is
virtually at right angles with the loop or ring B. This forceps end piece C may
either be an integral part of the elongated thimble A, as shewn in figures 1, 2, and 3,
of the drawings, or it may be separately and removably attached thereto, as, för
instance, by constructing it with a screw-threaded shank adapted to fit a screw-
threaded socket in the forward end of the thimble A, as shewn in figure 5 of the
drawings.
In using the device, one being applied to the index and second fingers of the right
hand and another to, the index and second fingers of the left hand, the two combined
virtually form the two main limbs or members of an obstetrical forceps, the fingers
of the operator constituting the handles by which to manipulate them whereby the
operator has a sense of touch which enables him to know with absolute certainty that
the instrument is in the proper position, and with this knowlodge he can avoid all
injury to the mother or child.
By this device; a large per-centage of children, as ordinarily delivered by the
forceps in common use, can with the one blade or Timb, which this device constitutes,
be safely delivered. The simplicity in the application of the device and the perfect
safety with which it can be used, are strong points in its favor. The device, too,
occupies but little space and can be used by the operator throughout an entire
confinement without the aid of an assistant. It virtually forms what may be termed
a suction-thimble obstetrical forceps.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is
As a new article of manufacture, an obstetrical instrument, consisting of the curved
socket piece A, for the reception of the index finger, having a jaw at its closed
end and provided with a ring or loop B at its open end, for the reception of the
second finger, as set forth.
Dated this 6th day of December 1889.