WO2016009671A1

WO2016009671A1 - Ultrasound treatment device

Info

Publication number: WO2016009671A1
Application number: PCT/JP2015/057112
Authority: WO
Inventors: 原　光博
Original assignee: オリンパス株式会社
Priority date: 2014-07-16
Filing date: 2015-03-11
Publication date: 2016-01-21
Also published as: JP2016021982A

Abstract

An objective of the present invention is to accurately align a focus of therapeutic ultrasound with a target region. Provided is an ultrasound treatment device (100), comprising: a therapeutic ultrasound oscillator (11) which emits therapeutic ultrasound; a housing (15), having a long and narrow shape allowing insertion within a body cavity, which houses the therapeutic ultrasound oscillator (11); and an anchor (17) which is disposed upon the housing (15) so as to be capable of protruding and retracting in the direction of the discharge of the therapeutic ultrasound from the therapeutic ultrasound oscillator (11), and fixes the housing (15) in alignment with respect to the surface of the interior of the body cavity when protruding from the housing (15), thereby fixing the distance from the therapeutic ultrasound oscillator (11) to the surface of the interior of the body cavity.

Description

Ultrasonic therapy device

The present invention relates to an ultrasonic therapy apparatus.

Conventionally, there has been known an ultrasonic treatment apparatus that irradiates a lesion with therapeutic ultrasonic waves in a relatively wide space such as the stomach in a living body (see, for example, Patent Document 1). The ultrasonic processing apparatus described in Patent Document 1 presses two balloons holding an ultrasonic wave generation source against an inner wall of a space such as the stomach, and controls the ultrasonic irradiation position based on the amount of fluid in the balloon.

JP 2012-90779 A

However, the shape of the balloon is not determined only by the amount of fluid in the balloon, but changes depending on the pressing force of the balloon against the inner wall of the space. Therefore, the ultrasonic treatment apparatus described in Patent Document 1 has a problem that it is difficult to accurately position the focal point of ultrasonic irradiation in the target area.

An object of the present invention is to provide an ultrasonic therapy apparatus capable of accurately positioning the focus of therapeutic ultrasound in a target area.

In order to achieve the above object, the present invention provides the following means.
One embodiment of the present invention includes an ultrasonic transducer that generates ultrasonic waves, a long and narrow shape that can be inserted into a body cavity, a housing that accommodates the ultrasonic transducer, and a housing that includes the ultrasonic transducer. From the ultrasonic transducer to the surface in the body cavity. The housing is fixed in a positioning state with respect to the surface in the body cavity while protruding from the housing. An ultrasonic treatment apparatus including an anchor that can fix the distance of the ultrasonic therapy is provided.

According to this aspect, the housing is inserted into the body cavity to cause the anchor to protrude, and the housing is positioned and fixed with respect to the surface at a desired position in the body cavity. Thereby, since the distance from the ultrasonic transducer to the surface in the body cavity is fixed, the focal point of the ultrasonic wave can be accurately positioned in the target region. Therefore, the lesion can be treated by accurately irradiating the target region with the ultrasonic wave emitted from the ultrasonic transducer by a simple operation of projecting the anchor at a desired position in the body cavity.

In the said aspect, it is good also as providing the ultrasonic wave propagation part which can propagate the ultrasonic wave emitted from the said ultrasonic vibrator to the surface in the said body cavity.
With this configuration, since the ultrasonic wave emitted from the ultrasonic transducer is propagated to the surface of the body cavity by the ultrasonic wave propagation unit, it is possible to improve the treatment efficiency by the ultrasonic wave.

In the above aspect, the ultrasonic wave propagation section may be a balloon that can be inflated by being filled with an ultrasonic wave propagation medium.
With this configuration, the treatment efficiency by ultrasound is improved by improving the adhesion between the surface of the body cavity and the ultrasound transducer with a simple operation of filling the ultrasound propagation medium and inflating the balloon. Can be made.

In the said aspect, it is good also as providing the focus position change part which changes the focus position of the said ultrasonic transducer | vibrator.
With this configuration, the focal point changing unit irradiates the ultrasonic wave in the depth direction of the target region or in the direction intersecting the target region from the ultrasonic transducer whose distance to the surface in the body cavity is fixed by the anchor. can do. Therefore, it is possible to facilitate the treatment of a lesion over a large area in the body cavity.

In the above aspect, the ultrasonic transducer may include a plurality of ultrasonic elements arranged in an array, and the focal position changing unit may select the ultrasonic element to be used.
With this configuration, the ultrasonic irradiation range can be changed by a simple operation of simply switching the ultrasonic element to be used by the focal position changing unit.

In the said aspect, it is good also as providing the alerting | reporting part which alert | reports the state which the said anchor protrudes from the said housing.
By configuring in this way, the housing can be moved in the body cavity with the anchor protruding from the housing, and the housing can be inserted into or removed from the body cavity. Can be prevented.

In the said aspect, it is good also as a user having an operation part which operates the raising / lowering operation | movement of the said anchor, and the said alerting | reporting part interlock | cooperating with the raising / lowering action of the said anchor by the said operation part.
By comprising in this way, it can alert | report reliably that it is the state which the anchor protrudes from the housing.

In the said aspect, the said housing is good also as having the accommodating part which accommodates the said anchor so that attachment or detachment is possible.
By configuring in this way, it is not necessary to wash the anchor and the storage part that are soiled by touching the surface in the body cavity, and the entire storage part may be replaced. Therefore, the trouble of washing the anchor and the storage part can be saved.

In the said aspect, it is good also as providing the said several anchor which can be protruded and projected simultaneously from the said housing.
By comprising in this way, a housing can be stably fixed to a positioning state with respect to the surface in a body cavity by a some anchor.

In the above aspect, the housing has an abutting surface that is disposed at a distal end portion in the longitudinal direction so as to be inclined with respect to the longitudinal direction, and the anchor extends from the abutting surface to the abutting surface. The ultrasonic transducer is arranged on the base end side with respect to the abutting surface of the housing and can emit ultrasonic waves in a direction substantially perpendicular to the abutting surface. It is good also as being.

With this configuration, the focus of the ultrasonic wave can be accurately positioned in the target region by the anchor in a state where the abutting surface of the front end portion of the housing is abutted against the surface in the body cavity. Therefore, even when it is difficult to arrange the housing along the surface in the body cavity, it is possible to accurately irradiate the target position with ultrasonic waves.

In the above aspect, the anchor may have a clip-shaped tip portion capable of gripping a surface inside the body cavity.
With this configuration, the housing can be fixed in a positioning state simply by grasping the surface in the body cavity with the tip of the anchor, and there is no need to make a hole in the surface in the body cavity.

According to the present invention, there is an effect that the focal point of the therapeutic ultrasonic wave can be accurately positioned in the target area.

It is a schematic block diagram which shows a mode that the ultrasonic endoscope was inserted in the stomach. It is the schematic block diagram which looked at the ultrasonic therapy apparatus concerning 1st Embodiment of this invention in the longitudinal direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 2A in the width direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 2B from the emitting surface side of the ultrasonic transducer | vibrator for treatment. It is the schematic block diagram which looked at the inside of the housing of the state which accommodated the anchor in the longitudinal direction. It is the schematic block diagram which looked at the inside of the housing of FIG. 4A in the width direction. It is the schematic block diagram which looked at the inside of the housing of the state which protruded the anchor in the longitudinal direction. It is the schematic block diagram which looked at the inside of the housing of FIG. 5A in the width direction. It is the figure which looked at a mode that the anchor was protruded and the housing was fixed in the positioning state with respect to the surface in a body cavity in the longitudinal direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 6A in the width direction of the housing. It is a figure which shows an anchor operation part. It is a figure which shows the anchor operation part of the ultrasonic therapy apparatus which concerns on the modification of 1st Embodiment of this invention. It is the schematic block diagram which looked at the ultrasonic therapy apparatus which concerns on the other modification of 1st Embodiment of this invention in the longitudinal direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 9A in the width direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus concerning 2nd Embodiment of this invention in the longitudinal direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 10A in the width direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 10B from the emitting surface side of the ultrasonic transducer | vibrator for treatment. It is the schematic block diagram which looked at the ultrasonic therapy apparatus concerning 3rd Embodiment of this invention in the longitudinal direction of the housing. It is the schematic block diagram which looked at the ultrasonic therapy apparatus of FIG. 12A in the width direction of the housing. It is a schematic block diagram which shows the state which the ultrasonic therapy apparatus concerning 4th Embodiment of this invention accommodated the anchor. It is a schematic block diagram which shows a mode that the ultrasonic therapy apparatus which concerns on 4th Embodiment of this invention protruded an anchor, and fixed the housing in the positioning state with respect to the surface in a body cavity.

[First Embodiment]
An ultrasonic therapy apparatus according to a first embodiment of the present invention will be described below with reference to the drawings.
For example, as shown in FIG. 1, the ultrasonic therapy apparatus 100 according to the present embodiment is used in combination with an ultrasonic endoscope 10 that observes a treatment area of a pancreas from a stomach wall.

As shown in FIGS. 2A and 2B, for example, the ultrasonic therapy apparatus 100 is attached to the distal end of an elongated insertion portion 1 inserted into a subject of the ultrasonic endoscope 10 together with the diagnostic ultrasonic element 3. ing. As shown in FIG. 3, the insertion unit 1 includes a light guide 5 that guides illumination light for acquiring an observation image, and an objective lens that collects light returning from the observation region irradiated with the illumination light. 7 and a treatment instrument channel 9 through which a treatment instrument such as a puncture needle or forceps is passed.

In addition, as shown in FIGS. 4A, 4B, 5A, and 5B, the ultrasonic treatment apparatus 100 includes a concave treatment ultrasonic transducer (ultrasonic transducer) that generates therapeutic ultrasonic waves (ultrasonic waves). ) 11, a focal position changing unit 13 that changes the focal position of the therapeutic ultrasonic transducer 11, an elongated housing 15 that accommodates the therapeutic ultrasonic transducer 11 and the focal position changing unit 13, and treatment from the housing 15 An anchor 17 that can be projected and retracted in the direction in which therapeutic ultrasonic waves are emitted by the ultrasonic transducer 11, a retracting mechanism 19 that moves the anchor 17 in and out, and therapeutic ultrasonic waves emitted from the therapeutic ultrasonic transducer 11 in the body cavity. And a balloon (ultrasonic wave propagation part) 21 capable of propagating to the surface.

The therapeutic ultrasonic transducer 11 is arranged so that an emission surface for emitting therapeutic ultrasonic waves faces in the same direction as the emission surface of the diagnostic ultrasonic element 3.
The focal position changing unit 13 can translate the therapeutic ultrasonic transducer 11 in the longitudinal direction of the housing 15 or rotate it in the circumferential direction of the housing 15.

The housing 15 is disposed at the forefront of the insertion portion 1 of the ultrasonic endoscope 10. The housing 15 is provided with an anchor accommodating portion 23 for accommodating the anchor 17 on the distal end side with respect to the therapeutic ultrasonic transducer 11. The anchor housing part 23 is open in the emission direction of the therapeutic ultrasonic transducer 11. The anchor storage portion 23 can store the anchor 17 in the housing 15 up to the tip thereof.

The anchor 17 can protrude from the anchor storage portion 23 by a predetermined amount. The anchor 17 has a convex shape with an obtuse angle at the tip, and the tip can be embedded in the surface of the body cavity such as the stomach wall. As a result, as shown in FIGS. 6A and 6B, the anchor 17 is fixed from the therapeutic ultrasonic transducer 11 by fixing the housing 15 in a positioning state with respect to the surface in the body cavity in a state of protruding from the housing 15. The distance to the surface in the body cavity can be fixed.

As shown in FIGS. 4A, 4B, 5A, 5B, and 7, the intruding mechanism 19 includes a spring 31 that biases the anchor storage portion 23 in the direction in which the anchor 17 is stored, and an anchor that the operator holds and anchors. 17, an anchor operating portion 33 for operating the protrusion / disengagement operation, a flexible shaft 35 for transmitting the operation of the anchor operating portion 33 to the anchor 17, a bearing 37 for rotatably supporting the flexible shaft 35 around its central axis, and a flexible shaft And a cam 39 which is fixed to the distal end portion of 35 and converts the rotational motion of the flexible shaft 35 into the reciprocating motion of the anchor 17.

As shown in FIG. 7, the anchor operation portion 33 is disposed on the proximal end side of the housing 15 and is fixed to the proximal end portion of the flexible shaft 35.
The flexible shaft 35 is disposed along the longitudinal direction through the insertion portion 1 of the ultrasonic endoscope 10.

As shown in FIGS. 4A, 4B, 5A, and 5B, the cam 39 rotates around the central axis together with the flexible shaft 35. The cam 39 is a plate member whose distance from the central axis to the outer edge is not constant, and comes into contact with the proximal end of the anchor 17 or from the proximal end according to the rotation angle around the central axis of the flexible shaft 35. It is designed to be separated. The anchor 17 is pushed out from the anchor housing portion 23 by the cam 39 coming into contact with the base end portion of the anchor 17, and the anchor 39 is separated from the base end portion of the anchor 17 by the urging force of the spring 31. An anchor 17 is accommodated in this.

In addition, the ultrasonic treatment apparatus 100 includes a disk 41 with a slit and a photosensor 43 in the housing 15.
The disk 41 with a slit has a substantially disk shape, and has a slit extending in the radial direction at one place in the circumferential direction. The disc 41 with slits is fixed to the tip of the flexible shaft 35. The slit-equipped disc 41 rotates around the central axis along with the flexible shaft 35, so that the position of the slit changes around the central axis according to the rotation angle.

The photo sensor 43 is disposed in the vicinity of the disk 41 with the slit. The photosensor 43 outputs an output signal to a not-shown notifying unit when the slit of the disc 41 with slit is detected.

When the output signal is sent from the photosensor 43, the notification unit emits an alarm sound or displays a warning on a monitor screen (not shown). Accordingly, the notification unit can notify the surgeon that the anchor 17 is protruding from the anchor storage unit 23 in conjunction with the movement of the anchor 17 by the anchor operation unit 33. Yes.

The balloon 21 is attached to the housing 15 so as to cover the exit surfaces of the therapeutic ultrasonic transducer 11 and the diagnostic ultrasonic transducer 3. The balloon 21 is inflated in the direction in which ultrasonic waves are emitted from the therapeutic ultrasonic transducer 11 and the diagnostic ultrasonic transducer 3 by injecting and filling an ultrasonic propagation medium such as liquid or gas. It has become. By inflating the balloon 21, the adhesion between the surface of the body cavity and the therapeutic ultrasonic transducer 11 and the diagnostic ultrasonic transducer 3 can be improved, and the efficiency of diagnostic treatment using ultrasonic waves can be improved.

The operation of the ultrasonic therapy apparatus 100 configured as described above will be described.
When, for example, pancreatic cancer is treated with HIFU (High Intensity Focused Ultrasound) by the ultrasonic therapy apparatus 100 according to the present embodiment, first, the insertion unit 1 of the ultrasonic endoscope 10 is inserted into the stomach from the patient's mouth through the esophagus. insert.

At this time, the ultrasonic wave propagation medium is not injected into the balloon 21, and the balloon 21 is in a contracted state. Further, the anchor 17 is housed in the anchor housing portion 23 of the housing 15. Thereby, the insertion part 1 of the ultrasonic endoscope 10 can be smoothly inserted into the stomach without being obstructed by the balloon 21 or the anchor 17.

After inserting the insertion portion 1 into the stomach, as shown in FIGS. 4A and 4B, the balloon 21 is inflated by filling the balloon 21 with an ultrasonic wave propagation medium. The simple operation of filling the ultrasonic propagation medium and inflating the balloon 21 improves the adhesion between the stomach wall and the diagnostic ultrasonic transducer 3 or the therapeutic ultrasonic transducer 11 and improves the therapeutic efficiency by ultrasonic waves. Can be improved.

Next, the diagnostic ultrasonic wave is generated from the diagnostic ultrasonic transducer 3 by making the emission surface of the diagnostic ultrasonic transducer 3 face the region to be irradiated with the diagnostic ultrasonic wave. Then, the pancreas is observed through the stomach wall based on the echo of the diagnostic ultrasound, and as shown in FIG. 1, the ablation area to be cauterized on the stomach wall corresponding to the treatment site of the pancreas is marked.

Next, the surgeon operates the anchor operating portion 33 to project the anchor 17 from the housing 15 as shown in FIGS. 5A and 5B with the balloon 21 in contact with the ablation area marked on the stomach wall. Let Then, as shown in FIGS. 6A and 6B, the distal end of the anchor 17 is embedded in the surface of the stomach wall, and the housing 15 is positioned and fixed with respect to the stomach wall. As a result, the distance from the therapeutic ultrasonic transducer 11 to the surface of the stomach wall is fixed, so that the focal point of the therapeutic ultrasonic wave can be accurately positioned in the target region.

Next, therapeutic ultrasonic waves are applied to the ablation area by the therapeutic ultrasonic transducer 11, and the ablation area is heated at high temperature to be treated. The surgeon changes the focal position of the therapeutic ultrasonic transducer 11 by the focal position changing unit 13 so that the anchor 17 fixes the distance from the therapeutic ultrasonic transducer 11 to the stomach wall. It is possible to irradiate therapeutic ultrasonic waves in the depth direction of the target region or in the direction intersecting the depth direction. Therefore, it is possible to facilitate the treatment of a lesion over a large area in the body cavity.

When the treatment of the lesioned part is completed, the surgeon operates the anchor operation part 33 to store the anchor 17 in the anchor storage part 23 of the housing 15 as shown in FIGS. 4A and 4B. As a result, the positioning and fixing of the housing 15 with respect to the stomach wall is released. Further, the operator discharges the ultrasonic propagation medium filled in the balloon 21 and contracts the balloon 21. Thereby, the insertion part 1 of the ultrasonic endoscope 10 can be smoothly taken out from the stomach without being obstructed by the anchor 17 or the balloon 21.

At this time, if the anchor 17 protrudes from the housing 15, an alarm sound and a warning display are notified to the surgeon by the notification unit. Therefore, the housing 15 can be moved inside the body cavity without the anchor 17 being stored. It is possible to prevent the housing 15 from being moved or detached from the body cavity.

As described above, according to the ultrasonic treatment apparatus 100 according to the present embodiment, the focus of the therapeutic ultrasonic wave is accurately set to the target region by a simple operation of projecting the anchor 17 at a desired position in the body cavity. Can be positioned. As a result, it is possible to treat the lesioned part by accurately irradiating the target region with the therapeutic ultrasonic wave emitted from the therapeutic ultrasonic transducer 11.

In the present embodiment, the disk 41 with slits and the photosensor 43 are arranged in the housing 15. Instead of this, for example, as shown in FIG. 8, the slit disk 41 and the photosensor 43 may be arranged at the proximal end portion in the insertion portion 1 of the ultrasonic endoscope 10. By doing in this way, size reduction of the housing 15 can be achieved.

Further, in the present embodiment, the therapeutic ultrasonic transducer 11 has a concave shape, and the focal position changing unit 13 translates the therapeutic ultrasonic transducer 11 in the longitudinal direction of the housing 15, It was decided to rotate in the circumferential direction. Instead, for example, as shown in FIG. 9A and FIG. 9B, the therapeutic ultrasonic transducer 11 has a plurality of piezoelectric elements (ultrasonic elements) 11 a arranged in an array, and the focal position changing unit 13 may selectively activate the piezoelectric element 11a to be used, thereby changing the focal position of the therapeutic ultrasonic transducer 11 to the depth direction of the target region or the direction intersecting the depth direction.

[Second Embodiment]
Next, an ultrasonic therapy apparatus according to the second embodiment of the present invention will be described.
The ultrasonic therapy apparatus 200 according to the present embodiment is different from the first embodiment in that it includes four

anchors

17A, 17B, 17C, and 17D as shown in FIGS. 10A, 10B, and 11.
In the following, portions having the same configuration as those of the sample observation device 100 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 11, the housing 15 includes two anchor storage portions 23 A and 23 B disposed at the distal end portion in the longitudinal direction with the therapeutic ultrasonic transducer 11 interposed therebetween, and two anchors disposed at the proximal end portion. It has

storage parts

23C and 23D. The anchor

accommodating portions

23A and 23B at the distal end portion of the housing 15 and the

anchor accommodating portions

23C and 23D at the proximal end portion are respectively arranged at intervals in the width direction of the housing 15.

The four

anchors

17A, 17B, 17C, and 17D are provided so as to be able to appear and disappear in the direction in which the ultrasonic wave is emitted from the therapeutic ultrasonic transducer 11 from the respective

anchor storage portions

23A, 23B, 23C, and 23D. Further, as shown in FIG. 10A, the two anchors 17 A and 17 B arranged at the distal end portion of the housing 15 are integrated with each other at the base end portion, and the two anchors 17 A and 17 B are arranged at the base end portion of the housing 15. The base ends of the

anchors

17C and 17D are integrated with each other. As a result, the

anchors

17A and 17B and the

anchors

17C and 17D can move in and out simultaneously.

The intrusion mechanism 19 includes two ends 37 and 38 and two

cams

39 and 40 fixed to the front end of the flexible shaft 35 and the front side thereof. One cam 39 is disposed so as to be in contact with the proximal end portions of the pair of

anchors

17A and 17B disposed at the distal end portion of the housing 15, and the other cam 40 is disposed at the proximal end portion of the housing 15. The

anchors

17C and 17D are arranged so as to come into contact with the base ends of the

anchors

17C and 17D.

These

cams

39 and 40 simultaneously rotate around the central axis along with the flexible shaft 35, and simultaneously contact or separate from the proximal ends of the corresponding

anchors

17A and 17B and the proximal ends of the

anchors

17C and 17D, respectively. It is supposed to be. Accordingly, the four

anchors

17A, 17B, 17C, and 17D can be moved in and out simultaneously according to the rotation angle of the flexible shaft 35.

According to the ultrasonic therapy apparatus 200 configured as described above, the four

anchors

17A, 17B, and 4B are arranged in the direction in which the therapeutic ultrasonic wave is emitted from the housing 15 by the operation of the anchor operation unit 33. 17C and 17D protrude at the same time. Therefore, the four

anchors

17A, 17B, 17C, and 17D can fix the housing 15 to the surface in the body cavity in a more stable position.

Further, the four

anchors

17A, 17B, 17C, and 17D are simultaneously accommodated in the housing 15 by operating the anchor operation portion 33. Therefore, the housing 15 can be easily and quickly moved without being blocked by the

anchors

17A, 17B, 17C, and 17D.

In the present embodiment, the four

anchors

17A, 17B, 17C, and 17D have been described as examples. However, there may be a plurality of anchors 17, for example, only two disposed at the distal end portion of the housing 15. Also good.

[Third Embodiment]
Next, an ultrasonic therapy apparatus according to the third embodiment of the present invention will be described.
The ultrasonic therapy apparatus 300 according to the present embodiment is different from the first embodiment in that, instead of the housing 15, as shown in FIGS.
In the following, portions having the same configuration as those of the ultrasonic therapy apparatus 100 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted.

The housing 315 includes a housing main body 315A including the therapeutic ultrasonic transducer 11 and a housing adapter 315B formed to be connectable to the distal end of the housing main body 315A. The housing main body 315A and the housing adapter 315B have

housing connecting portions

317A and 317B that are connected to each other.

The housing adapter 315 B includes an anchor storage portion 23, a bearing 37 and a cam 39, and a shaft coupling portion 319 that can be attached to and detached from the distal end of the flexible shaft 35. In a state where the housing main body 315A and the housing adapter 315B are connected by the housing connecting portion 317, the shaft connecting portion 319 is connected to the tip of the flexible shaft 35.

A cam 39 is connected to the shaft connecting portion 319. By connecting the shaft connecting portion 319 to the tip of the flexible shaft 35, the cam 39 can be rotated around the central axis along with the flexible shaft 35, and the anchor 17 can be protruded and stored by the cam 39. ing.

According to the ultrasonic treatment apparatus 300 configured as described above, by connecting the housing adapter 315B to the housing main body 315A, the anchor 17 protrudes from the housing 15 by the operation of the anchor operation unit 33, and the anchor 17 projects into the body cavity. The housing 15 is fixed in a positioning state with respect to the surface. Further, by removing the housing adapter 315 B from the housing main body 315 A, the anchor 17 and the anchor storage portion 23 are detached from the housing 15.

Therefore, only the anchor 17 and the anchor storage portion 23 can be exchanged. As a result, when the anchor 17 or the anchor accommodating portion 23 comes into contact with the surface of the body cavity and becomes dirty, the entire housing adapter 315B may be replaced. Therefore, the trouble of washing the anchor 17 and the anchor storage part 23 can be saved.

[Fourth Embodiment]
Next, an ultrasonic therapy apparatus according to the fourth embodiment of the present invention will be described.
As shown in FIG. 13 and FIG. 14, the ultrasonic treatment apparatus 400 according to the present embodiment replaces the housing 15 and has a butting surface 417 disposed at a distal end portion in the longitudinal direction so as to be inclined with respect to the longitudinal direction. It differs from 1st Embodiment by the point provided with the housing 415 which has.
In the following, portions having the same configuration as those of the ultrasonic therapy apparatus 100 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted.

The abutting surface 417 is inclined so that a cross section perpendicular to the longitudinal direction of the housing 415 gradually widens from the distal end surface of the housing 415 toward the base end portion.
The anchor accommodating portion 23 is opened to the abutting surface 417 and is disposed so as to accommodate the anchor 17 in a direction orthogonal to the abutting surface 417.

The therapeutic ultrasonic transducer 11 is disposed on the proximal end side with respect to the abutting surface 417, and is inclined so that the emission surface is substantially parallel to the abutting surface 417. As a result, the therapeutic ultrasonic transducer 11 can emit ultrasonic waves in a direction substantially perpendicular to the abutting surface 417.

According to the ultrasonic therapy apparatus 400 configured as described above, the anchor 17 is protruded from the abutting surface 417 in a state where only the abutting surface 417 of the distal end portion of the housing 415 is abutted against the surface in the body cavity. The housing 415 is positioned and fixed with respect to the surface in the body cavity by being embedded in the surface in the body cavity. Thereby, the distance from the therapeutic ultrasonic transducer 11 to the surface in the body cavity is fixed.

Therefore, even when it is difficult to place the housing 415 along the surface in the body cavity, the focus of the therapeutic ultrasonic wave is accurately positioned in the target area, and the therapeutic ultrasonic wave is accurately placed at the target position. Can be irradiated.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention. For example, the present invention is not limited to those applied to the above-described embodiments and modifications, but may be applied to embodiments in which these embodiments and modifications are appropriately combined, and is not particularly limited. .

Further, for example, in each of the above embodiments, the anchor 17 has a tip portion formed in an obtuse angled convex shape. Instead, the anchor 17 has a clip shape that can grip the surface in the body cavity. It is good also as having a front-end | tip part. By doing so, the distal end portion of the anchor 17 can grip the surface in the body cavity and fix the housing 15 in the positioning state, and it is not necessary to make a hole in the surface in the body cavity.

11 Ultrasonic transducer for treatment (ultrasonic transducer)
13 Focal Position Change Part 15 Housing 17 Anchor 21 Balloon (Ultrasonic Propagation Part)
23 Anchor storage (storage)
33 Anchor operation part (operation part)
100, 200, 300, 400 Ultrasonic therapy device 417 Abutting surface

Claims

An ultrasonic transducer that generates ultrasonic waves;
A housing having an elongated shape that can be inserted into a body cavity, and housing the ultrasonic transducer;
The ultrasonic wave is provided in the housing so as to be capable of projecting and retracting in an ultrasonic wave emitting direction, and the housing is fixed in a positioning state with respect to a surface in the body cavity in a state of protruding from the housing, and the ultrasonic wave An ultrasonic therapy apparatus comprising an anchor capable of fixing a distance from a transducer to a surface in the body cavity.
The ultrasonic therapy apparatus according to claim 1, further comprising an ultrasonic wave propagation unit capable of propagating ultrasonic waves emitted from the ultrasonic transducer to a surface in the body cavity.
The ultrasonic therapy apparatus according to claim 2, wherein the ultrasonic wave propagation unit is a balloon that is inflatable by being filled with an ultrasonic wave propagation medium.
The ultrasonic therapy apparatus according to any one of claims 1 to 3, further comprising a focal position changing unit that changes a focal position of the ultrasonic transducer.
The ultrasonic transducer has a plurality of ultrasonic elements arranged in an array,
The ultrasonic therapy apparatus according to claim 4, wherein the focal position changing unit selects the ultrasonic element to be used.
The ultrasonic therapy apparatus according to any one of claims 1 to 5, further comprising a notification unit that notifies a state in which the anchor protrudes from the housing.
A user has an operation unit for operating the anchor movement operation;
The ultrasonic therapy apparatus according to claim 6, wherein the notification unit is interlocked with a movement operation of the anchor by the operation unit.
The ultrasonic treatment apparatus according to any one of claims 1 to 7, wherein the housing has a detachable storage portion for storing the anchor.
The ultrasonic therapy apparatus according to any one of claims 1 to 8, further comprising a plurality of the anchors that can appear and disappear from the housing at the same time.
The housing has an abutting surface disposed at an inclination with respect to the longitudinal direction at a distal end portion in the longitudinal direction;
The anchor is provided so as to be able to appear and retract in a direction substantially perpendicular to the abutting surface from the abutting surface,
10. The ultrasonic transducer according to claim 1, wherein the ultrasonic transducer is disposed closer to the base end side than the abutting surface of the housing and can emit ultrasonic waves in a direction substantially perpendicular to the abutting surface. An ultrasonic therapy apparatus according to claim 1.
The ultrasonic therapy apparatus according to any one of claims 1 to 10, wherein the anchor has a clip-shaped tip portion capable of gripping a surface in the body cavity.