Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2000-12-28
2003-03-11
Freay, Charles G. (Department: 3749)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C222S144500, C222S386000, C222S388000, C239S305000, C239S569000, C239S583000, C604S246000, C604S249000
Reexamination Certificate
active
06530907
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a channel switching apparatus, and more specifically, it relates to an improvement of the structure of a channel switching apparatus attaining simplification of manipulation.
BACKGROUND ART
FIG. 19
shows the structure of a manifold
200
employed for an angiographic apparatus employing a contrast medium as an example of a conventional channel switching apparatus.
Referring to the figure, a body part
200
A is provided with a first channel
201
a,
a second channel
201
b,
a third channel
202
, a fourth channel
201
c,
a fifth channel
204
, a sixth channel
201
d
and a seventh channel
206
.
A first cock
203
for switching a first main channel formed by coupling the first channel
201
a
and the second channel
201
b
with each other and a second main channel formed by coupling the first channel
201
a
and the third channel
202
with each other is provided for the first channel
201
a,
the second channel
201
b
and the third channel
202
.
In the state shown in
FIG. 19
, the first main channel is formed by the first cock
203
(hereinafter this state is referred to as state A1). The second main channel is formed by rotating a handle
203
a
of the first cock
203
by 90° anticlockwise (hereinafter this state is referred to as state B1).
A second cock
205
for switching a third main channel formed by coupling the second channel
201
b
and the fourth channel
201
c
with each other and a fourth main channel formed by coupling the second channel
201
b
and the fifth channel
204
with each other is provided for the second channel
20
l
b,
the fourth channel
201
c
and the fifth channel
204
. In a state shown in
FIG. 20
, the third main channel is formed by the second cock
205
(hereinafter this state is referred to as state A2). The fourth main channel is formed by rotating a handle
205
a
of the second cock
205
by 90° anticlockwise (hereinafter this state is referred to as state B2).
A third cock
207
for switching a fifth main channel formed by coupling the fourth channel
201
c
and the sixth channel
201
d
with each other and a sixth main channel formed by coupling the fourth channel
201
c
and the seventh channel
206
with each other is provided for the fourth channel
201
c,
the sixth channel
201
d
and the seventh channel
206
.
In the state shown in
FIG. 20
, the fifth main channel is formed by the third cock
207
(hereinafter this state is referred to as state A3). The sixth main channel is formed by rotating a handle
207
a
of the third cock
207
by 90° anticlockwise (hereinafter this state is referred to as state B3).
A syringe
100
is connected to one end of the first channel
201
a,
a contrast medium
250
is connected to the third channel
202
in a flowable manner, a physiological salt solution is connected to the fifth channel
204
in a flowable manner, a sphygmomanometric apparatus
270
is connected to the seventh channel
206
, and a catheter
210
having an end introduced into a blood vessel
310
of a case
320
is connected to the sixth channel
201
d
with interposition of a rotator
220
. The rotator
220
is employed for rotating the catheter
210
itself, and the direction of the catheter
210
is so adjusted, that introduction of the contrast medium
250
and the like into the blood vessel
310
is properly performed. A [sphygmomanometric operation], a [contrast medium aspirating operation], a [contrast medium introducing operation], a [physiological salt solution aspirating operation] and a [physiological salt solution introducing operation] are now described with reference to
FIG. 20
to FIG.
24
.
[Sphygmomanometric Operation]
The sphygmomanometric operation employing the manifold
200
is described with reference to FIG.
20
. In the sphygmomanometric operation, the third cock
207
is set in the state B3 for forming the sixth main channel. Thus, blood from the case
320
is introduced into the sphygmomanometric apparatus
270
, and the blood pressure of the case
320
is measurable.
[Contrast Medium Aspirating Operation]
The contrast medium aspirating operation employing the manifold
200
is described with reference to FIG.
21
. In the contrast medium aspirating operation, the first cock
203
is set in the state B1 for forming the second main channel. Thus, aspiration of the contrast medium
250
employing the syringe
100
is enabled. At this time, the sphygmomanometric operation of the case
320
is continued by maintaining the third cock
207
in the state B3.
[Contrast Medium Introducing Operation]
The contrast medium introducing operation employing the manifold
200
is described with reference to FIG.
22
. In the contrast medium introducing operation, the first cock
203
is set in the state A1, the second cock
205
is set in the state A2 and the third cock
207
is set in the state A3, for allowing the first main channel, the third main channel and the fifth main channel to communicate with each other. Thus, it is enabled to introduce the contrast medium
250
stored in the syringe
100
into the blood vessel
310
of the case
320
.
[Physiological Salt Solution Aspirating Operation]
The physiological salt solution aspirating operation employing the manifold
200
is described with reference to FIG.
23
. In the physiological salt solution aspirating operation, the first cock
203
is set in the state A1 for forming the first main channel while the second cock
205
is set in the state B2 for forming the fourth main channel. Thus, aspiration of a physiological salt solution
260
with the syringe
100
is enabled. At this time, the sphygmomanometric operation of the case
320
is enabled by setting the third cock
207
in the state B3.
[Physiological Salt Solution Introducing Operation]
The physiological salt solution introducing operation employing the manifold
200
is described with reference to FIG.
24
. In the physiological salt solution introducing operation, the first cock
203
is set in the state A1, the second cock
205
is set in the state A2 and the third cock
207
is set in the state A3 for allowing the first main channel, the third main channel and the fifth main channel communicate with each other. Thus, it is enabled to introduce the physiological salt solution
260
stored in the syringe
100
into the blood vessel
310
of the case
320
. This physiological salt solution
260
, which is introduced in order to form no thrombus, is called flush.
A doctor (hereinafter referred to as operator) performing angiography with the manifold
200
having the aforementioned structure must perform each of the aforementioned operations by touch while observing a monitor image of the affected part reflected by X rays. Therefore, the operator must frequently perform switching of each cock with his left hand while holding the syringe
100
with the right hand. Particularly at the time from the [contrast medium aspirating operation] to the [contrast medium introducing operation] and at the time from the [physiological salt solution aspirating operation] to the [physiological salt solution introducing operation], it is necessary to switch two cocks.
Further, the cocks must necessarily be switched also in each operation, the switching involves troublesomeness while correctness of the switching is required, and there arises such a problem that concentration of the essential important operation for carefully observing the state of the affected part while observing the monitor image cannot be sustained.
Accordingly, an object of the present invention, which has been proposed in order to solve the aforementioned problem, is to provide a channel switching apparatus with which one can readily and correctly perform manipulation of a channel switching apparatus such as a manifold even by touch.
DISCLOSURE OF THE INVENTION
In one aspect of the channel switching apparatus based on the present invention, a channel switching ap
Matsushima Michihiko
Sugahara Atsushi
Yamamoto Tetsuya
Freay Charles G.
Sayoc Emmanuel
Sugan Co., Ltd.
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