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Патент USA US2105961

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Jan. 18, 1938.
M. ANDREI'NI
2,105,961
CARRIAGE FOR RÖNTGEN APPARATUS
Filed Feb. 21, l1935
2 sheets-sheet. 1
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Flai
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Jan. 18, 1938.
M. ANDRE|N|
CARRIAGE RoR 'R‘ÓNTGRN APPARATUS
Filed Feb. 21, 1955
' f’fa. 5.
2,105,961
2 sheets-sheet 2y
Z,l5,961
Patented Jan. 18, 1938
UNITED `STA'l`
2,105,961
CARRIAGE FOR RÖNTGEN APPARATUS
Michele Andreini, Milan, Italy
Application February 21, 1935, Serial No. 7,605
:in Italy February 23, 1934
(Cl. Z50-34)
end another universal joint to which the tube
This invention relates to improvements in ap
paratus for Röntgen'radioscopy, radiography and and helder frame assembly is attached and sep
radiotherapeutic treatment, and particularly in arately counterweighted, with regard to this
the supporting devices or carriages thereof. joint.
5 Claims.
5 These latter vcarry the X-ray emission tube, and
also according to requirements a iiuorescent
screen for radioscopy purposes, a film or plate
holder for X-ray photographs, or both of these.
'I‘he invention is applicable to such supporting
10 devices or carriages irrespectively of their type,
whether for use upon patients when standing
or lying down, or for use with stationary objects.
In these apparatus the tube is held in a frame
shaped holder in vwhich also a screen lor a pho
1 Ul tographic plate or film holder may be mounted
in such a way that displacement of the assembly
in both longitudinal and transverse directions are
possible to allow the center of observation or
treatment to be brought to any point with regard
20 to ‘the patient or object. These displacements
are made possible in the known apparatus by
means of `two carriages, one of which carries the
tube and holder assembly and runs transversely
on the other carriage which is able to perform
25 vertical movements. The carriage supporting the
tube and holder assembly may in some cases be
inclined so as to allow oblique radiations on the
patients.
The structures built in this manner are very
30 complex and bulky and comprise numerous parts
connected with each other by joints which offer
resistance to the desired displacements. They
are consequently rather expensive, both in first
cost and maintenance.
35
The present invention eliminates these disad
vantages and consists in- that the tube and holder
assembly is connected by means of universal joints
with the end of a pivoted. lever system, which is
preferably counterweighted and which is itself
40 universally jointed to a stationary base cr car
riage. By virtue of this mechanism with univer
sal joints, the tube and holder can assume any
position and inclination.
This arrangement provides relative transverse
45 displacements of the tube and holder unit in polar
instead of orthogonal co-crdinates; it allows the
tube to be inclined without altering the parallel~
ism of the two sides of the holder frame carrying
the tube and observation or photographic means,
whereby this holder can be made of simple con
struction.
In one form of the apparatus, the counter
weighted lever system comprises a single bar,
having at one of its ends a universal joint con
55 nected with a stationary base and at its other
In a modified arrangement, the lever system
comprises four arms arranged in superposed pairs
and forming two articulated parallelograrns, par
allel to each other.
In this case each arm is con
nected by a universal joint to the base and frame
so that a higher number of universal joints be 10
comes necessary, but the tube and holder assem
bly need not be counterweighted and the appa
ratus becomes more stable and manageable.
In both cases, the apparatus may be adjusted
by direct manipulation of the tube and holder
frame, because this assembly can be brought di
re'ctly from one position to another without ap
preciable effort.
The counterbalancing may be done in any man- A
ner, for example,`by means of stationary coun
20
terweights or sliding weights operated by cables
and pulleys, or springs may be used instead of
weights.
The two above-mentioned constructions are
illustrated in the annexed drawings as applied 25
to an orthoscope apparatus for observing a pa
tient while standing.
In said drawings:
Figures 1 and 2 are side and plan views of the
single-arm apparatus.
30
Figs. 3 and 4 represent the same views of the
articulated parallelogram apparatus.
In both cases, the Röntgen tube L is mounted
in a holder CED of frame shape having tele
scopic joints E in its arms for enabling it to be 35
enlarged. This assembly forms a -rigid unit con
nected in the form shown in Figs. l and 2, by
means of a universal joint G with an arm F
pivotally connected by means of a universal joint
G' to a bracket A’ of a base A supporting a ver
40
tical table B for the standing patient to lean
against. Ccunterweights I-i' attached to the
frame member C on opposite sides of the arm F
put the frame and tube L in neutral equilibrium
about the point Gr. These weights are adjustable. 45
The arm F is counterbalanced by a weight I-I which
also balances the weight of the assembly LCED
carried by the arm F. The weight I-I also may be
adjustable or replaced by a spring.
It will be seen that by means- of the two uni 50
versal joints and counterweights, the operator can
displace the tube and holder in any direction
without appreciable elîort.
The side C and the opposite side of the holder
remain parallel to each other for any position 55
2
2,105,961
given to the assembly. The apparatus is very
simple and inexpensive, is completely rigid with
regard to its base, and offers smooth operation.
In the case of larger apparatus, in which it is
necessary to maintain an absolute precision of
all movements, the arrangement represented in
Figs. 3 and 4 may be adopted.
In this case, the
single arm F is replaced by four parallel arms F,
each connected by means of a universal joint G’
10 with the base A, and to the tube and holder
assembly CDEL by a universal joint G. In this
case, the counterweights H’ for the assembly are
no longer necessary as the arms form two artic
ulated parallelograms ensuring parallel displace
15 ment of the tube and holder.
This construction,
however, requires eight universal joints, as shown
in Figs. 3 and 4.
These constructional details can, of course, be
altered if need be without, however, departing
from the scope of the appended claims.
I claim:
1. A Röntgen tube carriage, comprising a
frame with tube holding means in one side there
of, a screen rigidly connected to and carried by
said frame, a base, a lever system comprising a
plurality of levers forming members of a link
parallelogram system, a plurality of universal
jointsconnecting said levers at spaced points' to
the base, and a plurality of universal joints con
necting said levers to the frame, said levers be
ing four in number and vertically and horizon
tally spaced from each other and being counter
weighted with respect to their joints to the base.
2. A suspension apparatus for a Röntgen tube
holder, comprising a base, a lever, a universal
joint for mounting said lever intermediate its
ends on said base, a universal joint on one end
of said lever, a Röntgen tube holder connected
by said last-mentioned universal joint to said
lever, a screen rigidly connected to and carried
by said tube holder, and a counter-weight on the
other end of said lever to maintain said lever
in equilibrium in adjusted positions.
3. A suspension apparatus for a Röntgen tube
holder, comprising a base, a lever, a universal
joint for mounting said lever intermediate its
ends on said base, a universal joint on one end
of said lever, a Röntgen tube holder connected
by said last-mentioned universal joint to said
lever, a screen rigidly connected to and carried
by said tube holder, a counter-weight on the
other end of said lever to maintain said lever in
equilibrium in adjusted positions, and means for
maintaining said Röntgen tube holder in a given
position relative to the horizontal during its dis
placements.
4. A suspension apparatus for a Röntgen tube
holder, comprising a base, four levers, a univer
sal joint for mounting each lever intermediate
its ends on said base, a universal joint on one
end of each lever, a Röntgen tube holder con
nected by said last-mentioned universal joints to
said levers, a screen rigidly connected to and
carried by said tube holder, the universal joints
connecting said levers to said base and to said
tube holder being positioned to hold said levers
parallel to each other in the form of edges of a
rectangular prism, and means carried by the
free ends of said levers for counter-balancing
the weight of the tube holder to maintain the
levers in equilibrium in their adjusted positions.
5. A suspension apparatus for a Röntgen tube
holder, comprising a base, a lever, a universal >
joint for mounting said lever intermediate its
ends on said base, a universal joint on one end
of said lever, a Röntgen tube holder connected by
said last-mentioned universal joint to said lever,
a screen rigidly connected to and carried by said
tube holder, a counter-weight on the other end
of said lever to maintain said lever in equilibrium
in adjusted positions, and counter-Weight means
for counter-balancing the Röntgen tube holder
about the universal joint connecting it to the
lever.
MICHELE ANDREINI.
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