U.S. patent number 3,886,933 [Application Number 05/404,992] was granted by the patent office on 1975-06-03 for ureteral catheter device.
This patent grant is currently assigned to Olympus Optical Co., Ltd.. Invention is credited to Kunio Kinoshita, Toshiyuki Mori.
United States Patent |
3,886,933 |
Mori , et al. |
June 3, 1975 |
Ureteral catheter device
Abstract
A ureteral catheter device has a flexible guide tube insertible
through a control body of a cystoscope into a bladder so that its
forward end extends into the bladder and a small-diametered tube
insertible through the control body into the guide tube so that its
forward end extends through the forward end of the guide tube into
a ureter. The guide tube is adapted to be inserted into the ureter
with the small-diametered tube as a guide. After the
small-diametered tube is withdrawn, treatment devices can be
sequentially inserted for medical treatment.
Inventors: |
Mori; Toshiyuki (Tokyo,
JA), Kinoshita; Kunio (Tokyo, JA) |
Assignee: |
Olympus Optical Co., Ltd.
(Tokyo, JA)
|
Family
ID: |
23601858 |
Appl.
No.: |
05/404,992 |
Filed: |
October 10, 1973 |
Current U.S.
Class: |
600/135; 600/164;
606/127; 600/153 |
Current CPC
Class: |
A61B
1/00098 (20130101); A61B 1/002 (20130101); A61B
1/018 (20130101); A61B 1/307 (20130101) |
Current International
Class: |
A61B
1/002 (20060101); A61B 1/307 (20060101); A61b
001/30 () |
Field of
Search: |
;128/4,5,6,7,328 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gaudet; Richard A.
Assistant Examiner: Layton; Henry S.
Claims
What we claim is:
1. A ureteral catheter device comprising a cystoscope including an
insert body insertible into the human body, a control body
positioned outside the human body, an observation optical system
for permitting the interior of a bladder to be observed outside the
human body and an illumination optical system for illuminating the
interior of the bladder; a flexible guide tube adapted to be
inserted through the control body into the cystoscope, the forward
end of said flexible guide tube being extendible through said
insert body; and a flexible elongated member adapted to be
removably inserted through the guide tube and extended through the
forward end of the flexible guide tube into the interior of a
ureter whereby said guide tube can be further inserted with the
elongated member as a guide to permit its forward end to project
into the interior of the ureter.
2. The ureteral catheter device according to claim 1 in which said
cystoscope has means for adjusting the inclination angle of the
forward end portion of the guide tube at the control body.
3. The ureteral catheter device according to claim 1 in which said
elongated member is a tube having a rounded forward end, the
forward end portion of the member being more flexible than the
remaining portion thereof.
4. The ureteral catheter device according to claim 1 in which said
guide tube has a discharge opening provided in the side wall
thereof in the neighborhood of the forward end thereof.
5. A ureteral catheter device comprising a cystoscope including an
insert body insertible into the human body, a control body
positioned outside the human body, an observation optical system
for permitting the interior of a bladder to be observed outside the
human body and an illumination optical system for illuminating the
interior of the bladder; a flexible guide tube adapted to be
inserted through the control body into the cystoscope, the forward
end of said flexible guide tube being extendible through said
insert body; and a treatment device adapted to be removable
inserted through the guide tube and extended through the forward
end of the flexible guide tube into the interior of a ureter.
Description
BACKGROUND OF THE INVENTION
This invention relates to a ureteral catheter device through which
treatment devices can be inserted into a predetermined part of the
patient for ureteric catheterization, for example, taking urines
from a pair of kidneys, examining the presence or absence of
urethrostenosis and its extent, locating a concrement and tumor and
cleaning pelvis renalis.
In effecting ureteric catheterization a ureteral cystoscope is
conventionally used in combination with treatment devices such as a
catheter. That is, the ureteral cystoscope is inserted through a
urethra into a bladder and a catheter introduced into a side tube
of the ureteral cystoscope is further inserted through the orifice
of ureteral directly into a ureter, under observation through the
observation section of the ureteral cystoscope, by operating a
raising mechanism (lever) and various treatments are effected. In
this case, various catheters or treatment devices are often
required to be used sequentially according to medical treatments
involved. For example, a small-diametered fiberscope is inserted
into the ureter to locate any affected part of the patient and then
withdrawn. In the case of lithuretria the corresponding treatment
devices are sequentially inserted for medical treatment. Difficulty
is often encountered in positioning the treatment device relative
to the affected part of the patient and a greater amount of skill
required on the side of the physician in a case where repeated
treatments are necessary. Therefore, such operations are very
difficult and, in addition, undue pains are also imparted to the
patient.
SUMMARY OF THE INVENTION
It is accordingly the object of this invention to provide a
ureteral catheter device capable of positioning any of treatment
devices relative to the affected part of the patient with ease and
accuracy and thus easily replacing one treatment device after
another by a simple operation.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view showing a ureteral catheter device
according to this invention;
FIG. 2 is a perspective view showing a closing member;
FIG. 3 is a partial, cross-sectional view showing an operative
position of the device; and
FIG. 4 is a partial view showing a final operative position of the
device.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
There will now be explained a ureteral catheter device according to
this invention by referring to the drawings.
In FIG. 1 a reference numeral 1 is a guide device or cystoscope
provided with a lengthy cylindrical insert body 3, and a control
body 2 connected the the base of the insert body 3 and adapted to
effect various operations necessary for the cystoscope. The forward
end portion of the insert body 3 is bent at a slight angle and the
bent section has an observation windown 5 and an illumination
window 4 at the outside. An opening 6 is provided near the bent
section of the insert body 3 in a manner to align with the
observation window and illumination window. The opening 6
communicates with a channel 7 provided within the insert body 3, as
shown in FIG. 3. A flexible guide tube 8 and a closing member 9 are
provided for insertion through the channel 7 from the side on which
the control body is located. In the neighborhood of the opening 6
of the insert body 3 a raising mechanism 10 is provided to permit
the forward end portion of the flexible guide tube 8 to be raised
from within the opening 6 as well as to permit the angle of the
raised portion of the guide tube 8 to be adjusted. The raising
mechanism 10 includes a raising lever 11 one end of which is
pivoted and the other end of which can swingably extend outwardly
from the opening 6, and a wire 12 one end of which is connected to
the raising lever 11 and the other end of which is connected to an
operation knob 13 of the control body 2. The operation of the knob
13 causes the lever 11 to be raised through the wire.
Within the insert body 3 is provided an optical guide 14 having a
plurality of focusing lenses 14a arranged at predetermined
intervals along its lengthwise direction. One end of the optical
guide 14 is optically connected to the observation window 5 and the
other end of the optical guide 14 is optically connected to an
eyelens 15 disposed at the control body 2. The illumination window
4 is connected to an outside light source through an optical fiber
guide disposed within the insert body 3. The field of vision of the
observation window 5 is illuminated by the illumination window 4
and the movement of an object can be observed from the outside
through the observation window 5 and eyelens 15.
The flexible guide tube 8 may be made of synthetic resin material.
The guide tube may be open at both ends or be provided with a valve
mechanism at its open end. In the latter case, a small-diametered
tube 16 may be inserted in an air tight manner into the guide tube
8. The tube 16 may be made of synthetic resin material and has such
an outer diameter that it is slidably movable within the guide tube
8. The tube 16 has a rounded forward end, the forward portion of
the tube being more flexible than the remaining portion thereof. As
a result, even if this forward end is contacted with an inner wall
of the human body, no wound is caused to the inner wall.
In the neighborhood of the forward end of the guide tube 8 an
exhaust port 21 is provided for a fluid entering through the
forward open end of the tube 8 to be discharged into the
bladder.
The closing member 9 as shown in FIG. 2 is adapted to close the
opening 6 when the insert body 3 of the cystoscope 1 is inserted
into a bladder. The closing member has a closing section 9a, a
shaft 9b slidably inserted within the body 3 and an operating
section 9c.
An explanation will now be made as to how to use a catheter
device.
The closing member 9 is inserted into the cystoscope 1 to close the
opening 6 of the insert body 3. The insert body 3 is inserted into
the urethra so that its forward end is positioned in the bladder
17. Then, the closing member is withdrawn from the cystoscope and,
instead, the flexible guide tube 8 is inserted through the control
body 2 into the insert guide 3 so that its forward end extends
through the opening 6 into the bladder 17. The raising angle of the
guide tube 8 to the cystoscope can be controlled by adjusting the
raising device 10. The extent to which the guide tube extends can
be controlled by adjusting the guide tube 8, by the control body 2,
in its longitudinal direction. The forward end of the guide tube 8
can be located opposite to and close to the orifice 18 of a ureter
19 as shown in FIG. 3 by effecting said controls under observation
through the observation window 5 and the eyelens 15. Then, the
small-diametered tube 16 is inserted from the base of the guide
tube 8. As shown in FIG. 3 the forward end of the tube 16 extends
through the forward end of the guide tube 8 into the orifice 18 of
the ureter. Then, the guide tube 8 is further inserted, as shown in
FIG. 4, into the orifice 18 of the ureter with the small-diametered
tube 16 as a guide and held in place. Then, the small-diametered
tube 16 is withdrawn and, instead, a fiberscope and/or various
treatment devices 20 are sequentially inserted in a manner to be
extendible through the forward end of the guide tube into the
ureter, so that necessary medical treatments can be effected.
During the treatment, when a fluid is entered through the ureter
into the guide tube 8, the guide tube 8 is withdrawn a little way
to permit the opening 21 of the guide tube to communicate with the
bladder and the fluid is free to flow into the bladder. After a
discharge of the fluid into the bladder the guide tube 8 is again
inserted and the treatment device performs a necessary function
without any bad influence from the filthy water.
* * * * *