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JPH09238946

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPH09238946
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
ultrasonic probe used when performing an ultrasonic diagnostic imaging, and in particular, the
tip structure of an ultrasonic probe which has a long outer shape and can be inserted into a body
cavity. It is about
[0002]
2. Description of the Related Art An ultrasonic transducer or mirror is rotatably provided inside
the distal end of an insertion portion comprising a flexible sheath, and mechanical scanning is
performed while rotating via a flexible shaft or the like extending from a rotational drive portion.
Ultrasonic probes are known.
[0003]
For example, in JP-A-7-79980, an ultrasonic transducer or mirror is supported via a holder, a
flexible shaft is connected to one end of the holder, and this flexible shaft is positioned at the rear
end of the probe together with a sheath surrounding them. An extension to the connector part is
described.
In this ultrasonic probe, the inside of the sheath is filled with an ultrasonic transmission medium
(for example, liquid paraffin etc.) to efficiently transmit an ultrasonic beam and to smoothly
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operate the flexible shaft in the sheath. It also doubles as a lubricant, as it does. Also, the
ultrasonic transmission medium is injected from the distal end of the sheath and sealed by
adhesively fixing a sealing member to the injection port.
[0004]
By the way, the ultrasonic probe is required to have various functions depending on the
application, but in the prior art, many kinds of ultrasonic probes have to be prepared for each
application. For example, when guiding an ultrasonic probe to blood vessels, bile ducts,
pancreatic ducts, etc., an ultrasonic probe through which a guide wire can be inserted is useful,
but when applied to the esophagus or stomach, the guide wire is not necessary. The guide wire
insertion path may interfere with the diagnosis. In addition, an ultrasound probe having a balloon
is useful for atherectomy of blood vessels, and it is necessary to prepare this type of ultrasound
probe. In particular, disposable ultrasound probes are very costly.
[0005]
Thus, US Pat. No. 5,421,338 describes an ultrasonic probe that can be inserted into a body cavity
and that can be used for different applications by making its sheath replaceable.
[0006]
The above patent describes the following.
1. A rotary shaft having a key groove formed at the end of an ultrasonic transducer coupled to
the drive shaft and provided at the distal end of the sheath and provided with a hole in the
portion of the sheath opposite to the key groove and having a similar key groove. A treatment
device such as a thrombectomy device having a 2. A small opening is provided at the distal
end of the sheath so that a guide wire can be inserted so that the ultrasonic probe can be easily
guided to the target site in the body cavity. 3. A balloon that can be inflated and contracted by
a syringe is provided at a position facing the ultrasonic transducer of the sheath, and ultrasonic
observation of the progress is performed while forming a blood vessel.
[0007]
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However, in the case of the above-mentioned U.S. Patent, it is necessary to carry out the injection
operation of the ultrasonic transmission medium every time the sheath is replaced, and it takes a
very long time to prepare for observation. In addition, air bubbles are mixed into the ultrasonic
transmission medium at the time of injection operation, or degassing before injection is
insufficient and air bubbles are generated during observation, and a good ultrasonic image can
not be obtained.
[0008]
The present invention has been made in view of these circumstances, and when adding a
function corresponding to various uses to the ultrasonic probe, the preparation necessary for the
addition of the function is omitted, and the image quality of the ultrasonic probe itself is
eliminated. It is an object of the present invention to provide a multifunctional ultrasonic probe
which does not deteriorate the
[0009]
SUMMARY OF THE INVENTION An ultrasonic probe according to the present invention has a
long sheath containing an ultrasonic transducer for transmitting and receiving ultrasonic waves,
and is provided with an attachment mounting member at its distal end. It is characterized by
[0010]
Since the attachment attachment member is provided at the tip portion and the attachment
(inspection procedure assisting functional member) according to the application can be attached,
the function can be easily added to the ultrasonic probe.
In addition, since it is not necessary to inject an ultrasonic transmission medium at the time of
attachment attachment, preparation for adding functions is almost unnecessary, and bubbles and
the like are mixed in the medium in the ultrasonic probe to deteriorate the image quality. I have
nothing to do.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
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described below with reference to the drawings.
1 to 6 relate to a first embodiment of the present invention, and FIG. 1 is an external view
showing an entire configuration of an ultrasound diagnostic imaging system provided with an
ultrasound probe according to the present invention, and FIG. FIG. 3 is a cross-sectional view
showing a detailed configuration of a connector unit for connecting the ultrasound probe to an
ultrasound diagnostic system, and FIG. 4 is a configuration of a tip portion of the ultrasound
probe. 4 (a) and 4 (b) show a state in which the attachment is removed and a state in which the
attachment is attached, and FIG. 5 shows an ultrasonic probe through the forceps channel of the
endoscope. Fig. 5 (a) and Fig. 5 (b) are views showing a configuration of the insertion assisting
tool used when inserting into the medical device, and Figs. 5 (a) and 5 (b) are diagrams showing
usage patterns before and during ultrasonic probe insertion, FIG. 6 is an explanatory view
showing how to use the insertion aid. A.
[0012]
The present embodiment will be described by taking an attachment as a cytology brush unit for
collecting cells in a body cavity wall as an example. As shown in FIG. 1, the ultrasound diagnostic
imaging system provided with the ultrasound probe of the present embodiment is constituted by
the following means. The ultrasonic probe 1 that transmits and receives ultrasonic waves and
obtains a tomographic image has a connector portion 2 at one end thereof, and is configured to
be detachable from the drive unit 3 via the connector portion 2. The drive unit 3 incorporates a
motor for generating a driving force for rotating and scanning an ultrasonic transducer provided
at the tip of the ultrasonic probe and a pulsar / receiver for transmitting and receiving ultrasonic
signals. The drive unit 3 is connected to an observation device 4 that generates an image signal
by performing signal processing on an ultrasonic signal, and the output of the observation device
4 is displayed on the monitor 5 as a tomographic image. The drive unit 3 is fixed to an
extendable / rotatable support arm 6 so that the ultrasonic probe 1 can be easily inserted into
the forceps channel of the endoscope. The drive unit 3, the observation device 4, the monitor 5
and the support arm 6 are placed on the cart 7 and are movable.
[0013]
As shown in FIG. 2, the ultrasonic probe 1 comprises a connector portion 2 and an insertion
portion 8 extending from the connector portion 2 and having flexibility. The insertion portion 8
includes an ultrasonic transducer 9, a rotatable flexible shaft 10 mechanically connected to the
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ultrasonic transducer 9, and a sheath 11 including the ultrasonic transducer 9 and the flexible
shaft 10. The sheath 11 is a single or multiple braided stainless steel braid coated with a resin
such as polyethylene. In addition, a part of the braid on the inner wall of the sheath 11 is
exposed to the inside to make electrical contact with the flexible shaft 10 connected to the
ground electrode side of the ultrasonic transducer 9. I am lowering the impedance.
[0014]
The form of connection between the end of the sheath 11 and the connector portion 2 is as
shown in FIG. The end of the sheath 11 is connected to the base 12 in the connector portion 2. A
screw 13 is cut in the base 12, and after the sheath 11 is screwed in, the rubber tube 14 is
screwed in from above, and the sheath fixing nut 15 is further tightened to be watertightly fixed.
If an internal thread is cut in advance on the inner surface of the sheath 11, the sheath 11 can be
screwed in more smoothly. Here, since it inserts in the nozzle | cap | die 12 using elastic
deformation of the sheath 11, the sheath inner surface is not screwed.
[0015]
As shown in FIG. 4A, an ultrasonic transducer 9 and a flexible shaft 10 are provided inside the
sheath 11 at the distal end of the insertion portion 8 of the ultrasonic probe 1. The inside of the
sheath 11 is filled with the ultrasonic transmission medium 16 and sealed in a watertight manner
by a distal end sealing member 17 provided at the distal end of the sheath 11.
[0016]
A female screw 18 is cut in the distal end sealing member 17. On the other hand, the cytology
brush 20 has an external thread 19 cut at its proximal end, and can be screwed into the internal
thread 18 of the distal end sealing member 17 as shown in FIG. 4 (b).
[0017]
As shown in FIG. 5A, the insertion assisting tool 21 for inserting the ultrasound probe 1 having
such a configuration into the body cavity through the endoscopic method has the fixing screw
22, the check valve 23, and the water injection port. 24, the end portions of the slide outer
cylinder 26 and the slide inner cylinder 27, the slide outer cylinder 26 and the slide inner
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cylinder 27 that slide along the axial direction of the guide pipe 25 and the outer peripheral
surface and the inner peripheral surface of the guide pipe 25 respectively The rubber plug 30 is
fixed at one end to a pinching rubber 29 having a tapered opening 28, a rubber plug 30 for
sealing the opening 28 of the pinching rubber 29 in a watertight manner, and a front support
member 31 provided near the water injection port 24. A guide shaft 32 mounted rotatably and
retractably, a rear support member 33 fixed to the other end of the guide shaft 32, and a probe
insertion port 34 screwed into an opening provided in the rear support member 33. Ranaru.
[0018]
Here, the rubber plug 30 is rotatably and retractably attached so that the opening 28 can be
plugged so that the water poured from the water injection port 24 does not leak from the
pinched rubber 29. .
When the ultrasonic probe 1 is inserted, as shown in FIG. 5B, the rubber plug 30 is removed
from the opening 28 of the pinching rubber 29 and the ultrasonic probe 1 is inserted.
[0019]
The insertion assisting tool 21 configured in this way clamps the fixing screw 22 to the scope
forceps port 35 and attaches the insertion assisting tool 21 to the scope, as shown in FIG. The
probe insertion portion 8 is held, and the ultrasonic probe 1 is inserted from the probe insertion
port 34. At the point where the tip of the ultrasonic probe 1 abuts against the check valve 23 in
the vicinity of the water injection port 24, the grip rubber 28 is held and the slide outer cylinder
26 and the slide inner cylinder 27 are slid for the stroke shown in FIG. , The ultrasonic probe 1 is
inserted.
[0020]
At the point where the ultrasonic probe 1 comes out from the forceps opening (not shown) at the
tip of the scope, the ultrasonic transducer 9 is brought close to the target site, and the deaerated
water from the water injection port 24 Fill the water.
[0021]
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Here, water is poured after the ultrasonic probe 1 is inserted, but water may be pre-watered
before the ultrasonic probe 1 is inserted.
In this case, the opening 28 of the rubber rubber 29 is closed by the rubber plug 30 and then
water is poured.
[0022]
Next, the ultrasound probe 1 is scanned to obtain an ultrasound image. After scanning, a target
site (for example, a bronchus or the like) is rubbed with a cytology brush 20 attached to the tip
to complete the examination.
[0023]
According to the present embodiment, following ultrasound examination, the tissue at the target
site can be collected without replacing the probe, and more accurate diagnosis can be performed.
Also, by making the cytology brush detachable, it is only necessary to replace the brush when it
is broken, which is economical.
[0024]
Furthermore, the braided body braided into the sheath can prevent temperature change and
expansion / contraction of the sheath due to external force, and can also improve durability
against twisting of the sheath.
[0025]
FIGS. 7A and 7B show a cross-sectional view of the distal end portion 38 of the insertion portion
37 of the ultrasonic probe 36 according to the second embodiment of the present invention.
FIG. 7 (a) shows the state of the distal end portion 38 at the time of ultrasonic image acquisition,
and FIG. 7 (b) shows the state at the time of tissue collection. In the following description,
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members that are the same as in the first embodiment are given the same reference numerals,
and descriptions thereof will be omitted.
[0026]
A protective sheath 39 which can move forward and backward is provided on the outer
peripheral portion of the insertion portion 37, and in the vicinity of the tip of the protective
sheath 39, openings 40 larger than the beam width of ultrasonic waves are provided at two
places. The position of the opening 40 is determined so that the ultrasonic beam passes when the
cytology brush 41 is covered by the protective sheath 39. A female screw 42 is cut at the
proximal end of the cytology brush 41, and a corresponding male screw 44 is cut at the distal
end sealing member 43 provided at the distal end of the sheath 11. The other end of the
protective sheath 39 extends to the vicinity of the connector portion 2. The flexible shaft 10 is
provided with an acoustic mirror 45 at one bottom surface so as to cut the axis of the sheath at
45 °, and an ultrasonic transducer so as to emit an ultrasonic beam perpendicular to the axis of
the sheath at the other bottom surface A housing 46 provided with 9 is fixed. In the present
embodiment, an ultrasonic beam is emitted from the ultrasonic transducer 9 in the insertion axis
direction, and is reflected by the acoustic mirror 45 into a plane perpendicular to the insertion
axis to reach the target site. The ultrasonic signal reflected from the target site is reflected by the
acoustic mirror 45 in the direction of the insertion axis and enters the ultrasonic transducer 9.
[0027]
When the ultrasonic probe 36 according to the present embodiment is inserted into the scope,
the protective sheath 39 is slid to the distal end side of the insertion portion 37 and covered on
the cytology brush 41 to make a state as shown in FIG. 7A. After insertion of the ultrasound
probe 36, ultrasound examination is performed in this state (ie, a state in which the ultrasound
beam can pass through the aperture 40). After that, as shown in FIG. 7B, the protective sheath 39
is slid to the connector 2 side to expose the cytology brush 41, and the tissue is collected. When
removing the ultrasonic probe 36 from the scope, the protective sheath 39 is again put on the
cytological brush 41 and then the operation is performed.
[0028]
According to the ultrasonic probe according to the present embodiment, the collected tissue is
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not dropped or unnecessary part of the tissue is not collected, and diagnosis is more accurate
than that of the first embodiment. It can be carried out. Furthermore, since the opening of the
protective sheath is made larger than the width of the ultrasonic beam, artifact generation and
desensitization are reduced. Further, when the protective sheath is shifted to the connector side
to expose the cytological brush, the opening deviates from the passing position of the ultrasonic
beam, so that it can be easily judged on the ultrasonic image that the brush is surely exposed.
[0029]
FIGS. 8A and 8B relate to a third embodiment of the present invention, and are a guide wire as
another example of the attachment attached to the distal end sealing member 17 of the insertion
portion 8 of the ultrasonic probe 1. FIG. 6 shows a cross-sectional view of a guide wire tip
through which FIG. 8 (a) is a cross-sectional view showing the structure of the guide wire tip, and
FIG. 8 (b) is an explanatory view for explaining how to use the guide wire tip.
[0030]
In FIG. 8A, the guide wire tip 47 is composed of two parts, a lumen 49 provided with a guide wire
lumen 48 and having a substantially spherical tip, and a screw 51 with an external thread 50 cut.
The lumen portion 49 is rotatably crimped to the screw portion 51. The point that the guide wire
tip 47 is fixed to the distal end of the insertion portion 8 by screwing the male screw 50 into the
female screw 18 of the distal end sealing member 17 is the same as the first embodiment.
[0031]
The guide wire 52 shown in FIG. 8B is, for example, a stainless steel wire whose distal end
portion is formed in a coil shape so as not to damage the internal cavity wall.
[0032]
Such a guide wire 52 is inserted into the body cavity from the scope forceps port 35 to which the
insertion assisting tool 21 is attached, and the tip thereof is introduced and indwelled to a target
site.
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Next, the other end of the guide wire 52 is inserted into the guide wire lumen 48 of the guide
wire tip 47, the ultrasonic probe 1 is inserted along the guide wire 52 to the target site, and
ultrasonic inspection is performed.
[0033]
By using the guide wire tip according to the present embodiment, the insertability of the
ultrasonic probe is improved, and since the lumen portion is rotatable relative to the insertion
portion, the ultrasonic probe is inserted when the guide wire is inserted. Can be avoided by
applying unnecessary external force to the
[0034]
9, 10 and 11 show a fourth embodiment of the present invention.
FIG. 9 (a) is a cross-sectional view showing the detailed configuration of the tip of the ultrasonic
probe according to the present embodiment, and FIG. 9 (b) is a longitudinal cross section of AA
'of the tip of the ultrasonic probe. 9 (c) is a longitudinal cross-sectional view of the same BB ', FIG.
10 is a cross-sectional view showing the structure of the protective sheath on the connector side,
and FIG. 11 is an ultrasonic probe according to the present invention. It is explanatory drawing
which showed a mode that it used and extract | collected a structure | tissue.
[0035]
As shown in FIG. 9A, the distal end sealing member 17 of the ultrasonic probe 53 is provided
with a cutter tip 56 having a male screw 55 formed at the proximal end 54 and a hemispherical
shell 55 at the other. . The blade 57 of the cutter tip 56 is provided on the periphery of the
hemispherical shell 55. Furthermore, a protective sheath 58 made of polyethylene or the like
having good ultrasonic wave permeability is provided on the outer peripheral surface of the
insertion portion 8 so as to be movable back and forth. A hard dome-shaped cap 59 made of
metal or the like is provided at the tip of the protective sheath 58. An opening 60 is provided on
the side surface of the cap 59, and a sharp edge 61 is formed on the inner peripheral surface of
the opening 60. The structure near the opening is shown in FIG. 9 (b). That is, the tissue that has
entered the opening 60 is sandwiched between the blade 57 and the edge 61.
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[0036]
In order to confirm the position of the opening 60 on the ultrasonic image, an ultrasonic strong
reflector (for example, a metal wire) 62 is embedded in the protective sheath 58 as shown in FIG.
.
[0037]
Next, the structure of the connector section 2 side of the protective sheath 58 will be described
with reference to FIG.
The protective sheath 58 is connected to the connector portion 2 through a base 63 so as to be
watertight, to advance and retract, and to be removable. The mouth ring 63 is provided with a
suction port 64 for suctioning the inside of the protective sheath 58 and a water injection port
65 for injecting water into the protective sheath.
[0038]
The usage method of the ultrasonic probe 53 comprised as mentioned above is shown in FIG.
First, when performing an ultrasonic examination, water or physiological saline is injected from
the water injection pump (not shown) into the protective sheath 58 through the water injection
port 65, water is sent from the opening 60 to the target site, and a scan is performed. Start.
[0039]
After scanning, the inside of the protective sheath 58 is suctioned through the suction port 64 by
a suction pump (not shown). At this time, the tissue 66 is drawn into the opening 60. Thereafter,
the protective sheath 58 is slid in a direction in which the protective sheath 58 protrudes with
respect to the ultrasonic probe 1, and the tissue 66 sucked by the blade 57 of the cutter tip 56
and the edge portion 61 of the opening 60 is excised and collected.
[0040]
By using the ultrasonic probe 53 according to the present embodiment, more tissues can be
collected compared to those described in the first and second embodiments, and thus more
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accurate cell diagnosis can be performed.
[0041]
FIG. 12 is a cross-sectional view showing a configuration of a tip of an ultrasonic probe 67
according to a fifth embodiment of the present invention.
An external thread 69 is cut at the proximal end 68 and a balloon tip 71 having a flange 70 at
the other end is screwed into the distal end sealing member 17 of the ultrasonic probe 67. The
balloon 72 is provided so as to cover the portion of the sheath 11 in which the ultrasonic
transducer 9 is housed, and has a tubular shape at the time of contraction. One end of the
balloon 72 is thread-bound to the flange portion 70 of the balloon tip 71. The other end of the
balloon 72 is thread-bonded to one end of a balloon sheath 73 which covers the proximal side of
the portion of the sheath 11 in which the ultrasonic transducer 9 is incorporated. The balloon
sheath 73 extends to the vicinity of the connector portion 2 of the ultrasonic probe 67, and is
attached to the connector portion 2 in a watertight and removable manner with a base 63 as
shown in FIG.
[0042]
In ultrasonic examination by the balloon adhesion method using the ultrasonic probe 67
configured as described above, water etc. is injected from the water injection port 65 of the
mouthpiece 63, and the balloon 72 is inflated and brought into close contact with the internal
cavity wall of the target site. It is characterized in that it is possible to prevent the loss of the
image due to the influence of the air layer and to make a good ultrasonic inspection.
[0043]
According to the ultrasonic probe 67 according to the present embodiment, since the tip end of
the balloon 72 is fixed to the balloon tip 71, the balloon does not extend in the axial direction of
the ultrasonic probe at the time of inflation, and only in the radial direction uniformly. It expands
and the operability of the ultrasonic probe is improved.
[0044]
Although each embodiment has been described above, the present invention is not limited to the
above embodiment, and the attachment attached to the tip sealing member may be a heating
element or another sensor, and various selections can be made according to the application It
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goes without saying that
[0045]
The configuration of the present invention described above can be summarized as follows.
(1) An ultrasonic probe having an elongated sheath member incorporating an ultrasonic
transducer for transmitting and receiving ultrasonic waves, wherein an attachment attachment
portion is provided at the tip of the sheath member.
(2) The ultrasound transmission medium filled in the sheath member and a tip sealing member
for sealing the ultrasound transmission medium are provided, and the attachment attachment
portion is provided at the tip of the tip sealing member. (3) The ultrasonic probe according to (1)
according to (1), characterized in that it comprises a proximal end portion formed attachably to
the attachment attachment member and a distal end portion provided with a brush for collecting
cells The ultrasonic probe (4) according to (1) or (2) according to (1) or (2), wherein the
cytological brush is detachably provided as an attachment. The attachment attachment member
has an opening at a position through which the beam of the ultrasonic wave transmitted from the
ultrasonic transducer passes while being advanced upward. It has a protective sheath member
formed to be movable so as to expose the attachment in a state of covering the attachment to be
attached and in a state of being retracted in the sheath member shape. (5) When the protection
sheath member is retracted on the sheath member to expose the attachment, the opening makes
at least a part of the ultrasonic beam impervious (4) The ultrasonic probe (6) according to (4),
characterized in that it has a proximal end portion and a lumen which can be attached to the
attachment attachment member, and has a rotation at the proximal end portion. A guide wire tip
consisting of a freely provided lumen portion is detachably provided as an attachment (1) (2) The
ultrasonic probe according to (2) described in (7) a cylindrical portion formed of a material that
transmits ultrasonic waves and covering the sheath member freely, and a cap portion provided at
the tip of the cylindrical portion and having an opening in the side portion An attachment is
provided with a protective sheath member and a cutter tip comprising a proximal end portion
formed to be attachable to the attachment attachment member and a distal end portion having a
blade positioned so as to substantially contact the opening of the cap portion The ultrasonic
probe (8) according to (1) or (2) according to (1) or (2), which is detachably provided, and the
tissue can be excised by the opening and the cutter tip by advancing and retracting the
protective sheath on the sheath. Attach a flange tip having a proximal end portion formed
attachable to a member and a distal end portion formed in a flange shape The ultrasonic probe
according to (1), characterized in that
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[0046]
As described above, according to the present invention, since the attachment attachment member
is provided at the tip portion and the attachment (inspection procedure assisting functional
member) according to the application can be attached, the ultrasonic probe is easy Function can
be added to
In addition, since it is not necessary to inject an ultrasonic transmission medium at the time of
attachment attachment, preparation for adding functions is almost unnecessary, and bubbles and
the like are mixed in the medium in the ultrasonic probe to deteriorate the image quality. I have
nothing to do.
[0047]
Brief description of the drawings
[0048]
1 is an external view showing the entire configuration of an ultrasound diagnostic imaging
system equipped with an ultrasound probe according to a first embodiment of the present
invention.
[0049]
2 is an external view showing a schematic configuration of the ultrasonic probe according to the
first embodiment of the present invention.
[0050]
3 is a cross-sectional view showing a detailed configuration of the connector portion of the
ultrasonic probe according to the first embodiment of the present invention.
[0051]
4 is a cross-sectional view showing the configuration of the tip portion of the ultrasonic probe
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according to the first embodiment of the present invention.
(A) is sectional drawing of the state which removed the attachment, (b) is sectional drawing of
the state equipped with the attachment.
[0052]
5 is a partially broken external view showing a configuration of an insertion aid for
endoscopically inserting the ultrasonic probe according to the first embodiment of the present
invention into a body cavity.
(A) is a figure which shows the use form before ultrasonic probe insertion, (b) is a use form at the
time of ultrasonic probe insertion.
[0053]
6 is an explanatory view for explaining how to use the insertion aid according to the first
embodiment of the present invention.
[0054]
7 is a cross-sectional view of the tip portion of the ultrasonic probe according to the second
embodiment of the present invention.
(A) shows the state at the time of ultrasound image acquisition, (b) shows the state at the time of
tissue collection.
[0055]
<Figure 8> It is the cross section diagram which shows the constitution of the attachment which
is attached to the point of the ultrasonic probe which relates to the form of 3rd execution of this
invention.
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(A) is a figure which shows a structure, (b) is a figure which shows the usage method of an
attachment.
[0056]
<Figure 9> It is the block diagram of the tip section of the ultrasonic probe which relates to the
form of 4th execution of this invention.
(A) is a cross-sectional view showing a detailed configuration, (b) is a longitudinal cross-sectional
view near the opening of the cap portion, and (c) is a longitudinal cross-sectional view near an
ultrasonic transducer.
[0057]
10 is a cross-sectional view showing the structure of the connector side of the protective sheath
of the ultrasonic probe according to the fourth embodiment of the present invention.
[0058]
<Figure 11> It is the explanation drawing which shows the circumstances which collect the tissue
making use of the ultrasonic probe which relates to the form of 4th execution of this invention.
[0059]
<Figure 12> The cross section diagram which shows the constitution of the point section of the
ultrasonic probe which relates to the form of 5th execution of this invention.
[0060]
Explanation of sign
[0061]
DESCRIPTION OF SYMBOLS 1 ultrasonic probe 9 ultrasonic transducer 11 sheath 18 attachment
attachment part (female screw) 36 ultrasonic probe 44 attachment attachment part (male screw)
53 ultrasonic probe 67 ultrasonic probe
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