JP6179751B2 - Ultrasonic probe device and ultrasonic probe system - Google Patents

Description

The present invention relates to an ultrasonic probe for ultrasonically inspecting a state of a subject's body using an ultrasonic probe, and an ultrasonic probe system including such an ultrasonic probe.

  Conventionally, as an ultrasonic endoscope that mechanically scans ultrasonic waves emitted from an ultrasonic transducer, an ultrasonic transducer disposed at the distal end of an insertion portion and an ultrasonic transducer that is emitted from the ultrasonic transducer. A rotating member that mechanically scans sound waves is disclosed. For example, the ultrasonic endoscope disclosed as a small and lightweight one that has excellent operability and can obtain a good ultrasonic image is connected to the rotating member and passes through the insertion portion. 2 and a flexible first rotation transmission shaft 29 extending up to 2 and a driving device that is inserted into the universal cord 11 and connected to the base end side of the universal cord 11 has a high rotational driving force. A second rotation transmission shaft 33 that transmits by torque, and a set of bevel gears that transmit the rotational driving force of the second rotation transmission shaft 33 to the first rotation transmission shaft 29 with a low torque and a high rotation speed. (See Patent Document 1).

  Conventionally, an ultrasonic probe disclosed as a simpler, cheaper and more accurate has a male thread 102 </ b> A formed on a pipe 102. An internal thread 1051C is formed in the motor chassis A1051. By rotating the pipe 102, the meshing adjustment of the bevel gears 117 and 114A can be easily performed. Also, since the groove 102A is formed in the pipe 102, it can be easily disassembled (see Patent Document 2).

Japanese Patent Laid-Open No. 10-258055 JP 2000-333958 A

However, the above conventional ultrasonic endoscope and ultrasonic probe mechanically transmit the power from the motor only by the gear mechanism, so the structure is complicated, and if it is used for a long period of time, it will malfunction due to wear of the mechanism. And there is a problem that abnormal vibration is relatively likely to occur.
In addition, because this type of product is inserted into the body of the subject, high-level hygiene management is required for the probe itself. However, the conventional ultrasonic endoscope and ultrasonic probe described above have a power transmission mechanism. In addition, maintenance such as replenishment of lubricant such as grease was necessary. For this reason, there existed a problem that hygiene management itself was difficult.

  Therefore, the present invention provides an ultrasonic wave that has a relatively simple structure but is relatively less likely to cause malfunction or abnormal vibration even after long-term use, and the hygiene management of the probe as an insertion portion is relatively easy. It is an object of the present invention to provide a probe and to provide an ultrasonic probe system including such an ultrasonic probe.

In order to solve the above problems, the present invention takes the following measures.
(1) The ultrasonic probe of the present invention includes a first rotor 11 having the first magnetic body 12 in part near the tip, and a rotation mechanism that rotates the first rotor 11 as a first rotor. A substantially cylindrical first housing 10 provided on the inner side or rear side of 11,
A second rotor 31 having a part of the second magnetic body 32 is provided in the vicinity of the proximal end, and the second magnetic body 32 is placed in the magnetic field of the first magnetic body 12 and the tip of the first housing 10 is placed. A substantially cylindrical second housing 20 connected to the side;
A transmission rod 30 that extends in the cylinder of the second housing 20, is connected to the second rotor 31 at its base, and transmits the rotational force of the second rotor 31 to its front end;
The ultrasonic probe 41 is provided to be exposed on the outer peripheral side surface, and includes a third rotor 40 that is connected to the front portion of the transmission rod 30 and is incorporated near the tip of the second housing.
The second magnetic body 32 is disposed in the magnetic field of the first magnetic body when the second housing is connected to the first housing,
When the first rotor 11 is rotated by the rotation mechanism, the second rotor 31 rotates together with the second magnetic body that has received the magnetic moment of the first magnetic body,
When the second rotor 31 is rotated by the magnetic moment of the first magnetic body, the transmission rod 30 transmits the rotational force to the third rotor 40 on the front side as the second rotor 31 rotates,
The third rotor 40 rotates on the outer peripheral side surface of the third rotor 40 to perform a non-contact probe around the outer periphery of the front side portion of the second housing.
(2) In the ultrasonic probe apparatus, it is preferable that one of a pair of connection mechanisms that can be disconnected from each other is provided at each of a distal end portion of the first housing and a proximal end portion of the second housing.

Specifically, the set of connection mechanisms includes one connection portion 23 </ b> H provided on the distal end surface 10 </ b> E of the first housing 10 and the other connection portion provided on the proximal end surface of the second housing 20. By connecting / disconnecting them, the first housing and the second housing can be connected / disconnected to each other.
When the probe is inserted into the body and probed, etc., it is possible to perform higher-level hygiene management by exchanging or removing the front-side body insertion portion including the second housing.

(3) In any one of the ultrasonic probe devices described above, the third rotor 40 is fixed to the tip of the transmission rod 30 at the tip of the second housing 20, and rotates coaxially with the cylinder axis of the second housing. It consists of a rotating cylinder that can be attached,
It is preferable that one or a plurality of ultrasonic probes 41 with the outer side in the cylinder radial direction being the center in the directing direction is provided on the side surface of the third rotor 40.
An apparatus including such a third rotor can perform non-contact probe while rotating in a direction perpendicular to the axis (radial direction).

(4) In any one of the ultrasonic probe devices described above, the substantially cylindrical support base 4F is coaxially connected to the front portion of the second housing 20;
The third rotor 40 includes a projecting body that protrudes in the projecting axial direction intersecting the axis from the cylindrical side surface of the support base and is rotatably mounted around the projecting axis.
An ultrasonic probe is exposed and incorporated on the protruding side of this protruding body,
The rotational force of the transmission rod 30 is preferably changed in direction within the support base and transmitted as a rotational force around the protruding axis of the protruding body.

  The above configuration is employed in Example 3 to be described later.

(5) Moreover, the ultrasonic probe system of the present invention is acquired with the ultrasonic probe device according to any one of the above (1) to (4), which acquires probe data in a non-contact manner by an ultrasonic probe. An ultrasonic probe system comprising an analyzer for analyzing the probe data,
The ultrasonic probe transmits probe data by the ultrasonic probe 41 to either the inside of the third rotor 40 or the inside of the tip cap 2E attached to the tip of the third rotor 40. A transmitter 43 for
The analysis device includes a receiver that receives the probe data transmitted from the transmission device 43.

  As described above, the ultrasonic probe and the ultrasonic inspection system provided by the present invention rotate the rod or the rotor in a non-contact manner using the rotating magnetic field formed by the rotation of the magnetic material. Since the mechanism is adopted, it is relatively easy to operate, and even when used for a long period of time, it is relatively difficult for malfunctions and abnormal vibrations to occur, and stable rotation without vibration can be continued for a long period of time. . Moreover, since power transmission by the gear mechanism is not essential, the hygiene management of the probe as the insertion portion itself is relatively easy.

The side view in each state of a connection state (a) and a connection cancellation | release state (b) of the ultrasonic probe of Example 1 of this invention. FIG. 3 is an enlarged central cross-sectional view in the side view direction of the ultrasonic probe device according to the first embodiment. The AA line expanded sectional view of FIG. 2 (Example 1). FIG. 5 is an enlarged front sectional view of an ultrasonic probe portion (an enlarged sectional view corresponding to a line AA in FIG. 2) in an ultrasonic probe according to a second embodiment of the present invention. The side view in the connection state of the ultrasonic probe of Example 3 of this invention. FIG. 6 is a plan view of an ultrasonic probe in a holder connection state according to a third embodiment. FIG. 6 is an enlarged central cross-sectional view in the side view direction of the ultrasonic probe device according to the third embodiment. BB line expanded sectional view of Drawing 7 (Example 3). CC expanded sectional view of FIG. 7 (Example 3).

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described below with reference to the drawings showing the embodiments. 1 to 3 show the ultrasonic probe of the first embodiment, FIG. 4 shows the ultrasonic probe of the second embodiment, and FIGS. 5 to 9 show the ultrasonic probe of the third embodiment. Show.

(Minimum configuration of the present invention)
The ultrasonic probe apparatus of the present invention only needs to have at least the following minimum configuration among the configurations of the respective embodiments. That is, the minimum configuration includes the following configurations common to the embodiments.
A substantially cylinder provided with a first rotor 11 having a part of the first magnetic body 12 in the vicinity of the tip and a rotation mechanism for rotating the first rotor 11 on the inner side or the rear side of the first rotor 11. Shaped first housing 10
The second rotor 31 having the second magnetic body 32 as a part thereof is provided near the base end, and the second magnetic body 32 is in the magnetic field of the first magnetic body 12 in the state of the first housing 10. A substantially cylindrical second housing 20 connected to the front side.
A transmission rod 30 that extends in the cylinder of the second housing 20 and is connected to the base of the second rotor 31 to transmit the rotational force of the second rotor 31 to its front end.
The third rotor 40 is provided with the ultrasonic probe 41 exposed on the outer peripheral side surface and connected to the tip of the transmission rod 30 and incorporated near the tip of the second housing.
However, the second magnetic body 32 is required to be disposed in the magnetic field of the first magnetic body when the second housing is connected to the first housing.
The following rotational force transmission operation is performed with the minimum configuration that satisfies the above-described essential requirements. That is, when the first rotor 11 is rotated by the rotation mechanism, the second rotor 31 is rotated together with the second magnetic body that has received the magnetic moment of the first magnetic body. When the second rotor 31 is rotated by the magnetic moment, with the rotation of the second rotor 31, the transmission rod 30 transmits the rotational force to the third rotor 40 on the front side, and the third rotor 40 is third. By rotating on the outer peripheral side surface of the rotor 40, the outer periphery of the front side portion of the second housing is contactlessly probed.

In addition, the ultrasonic probe system of the present invention analyzes at least the ultrasonic probe apparatus according to any of the first to third embodiments and probe data acquired by the ultrasonic probe apparatus as a minimum configuration. What is necessary is just to be comprised from an analyzer. Hereinafter, the configuration of each embodiment will be described in detail.

(Basic configuration of Example 1)
The ultrasonic probe of the first embodiment shown in FIGS. 1 to 3 has a rod-like “in-body insertion portion that can be inserted into the body of a subject on the front side of a rod-like first housing having a rotationally connected rotation mechanism. Is provided. In particular,
The first rotor 11 having the first magnetic body 12 in a part thereof is provided in the vicinity of the tip, and a rotation mechanism for rotating the first rotor 11 is provided on the inner side or the rear side of the first rotor 11. A first housing 10 of
A second rotor 31 having a part of the second magnetic body 32 is provided in the vicinity of the proximal end, and the second magnetic body 32 is placed in the magnetic field of the first magnetic body 12 and the tip of the first housing 10 is placed. A substantially cylindrical second housing 20 connected to the side;
A transmission rod 30 that extends in the cylinder of the second housing 20, is connected to the second rotor 31 at its base, and transmits the rotational force of the second rotor 31 to its front end;
The ultrasonic probe 41 is provided to be exposed on the outer peripheral side surface, and includes a third rotor 40 that is connected to the tip of the transmission rod 30 and is incorporated near the tip of the second housing.

(Connected state and disconnected state)
As shown in FIGS. 1 and 2, the second housing 20 extending in a rod shape, the transmission rod 30 in the second housing 20, and the third rotor 40 on the front side of the second housing 20 are “in-body insertion portions”. As an integrated assembly. Each of the distal end portion of the first housing and the proximal end portion of the second housing is provided with a pair of coupling mechanisms that can be disconnected from each other, and the second housing 20 is coupled from the distal end of the first housing 10. It is configured to be separable. Specifically, a claw-like front side connecting portion 23H is formed to project from the center of the front end surface 10E of the first housing 10 in the axial direction, and the front side connecting portion 23H is inserted into the base end surface of the second housing 20. An insertion hole that can be held is formed. The front-side connecting portion 23H and the insertion hole constitute a set of connecting mechanisms including one connecting portion and the other connecting portion.
Thereby, the insertion part into the body is connected to the first housing 10 (FIG. 1a) or the connection part is disconnected from the first housing 10 (FIG. 1b). It will be in either state. Here, in the connected state in which the second housing is connected to the first housing, the second magnetic body 32 is disposed in the magnetic field of the first magnetic body, and when the first rotor 11 is rotated by the rotating mechanism, The second magnetic body receives a magnetic moment based on the magnetic field of the first magnetic body, and the second rotor 31 fixed with the second magnetic body rotates with respect to the second housing 20.

The front side connecting portion 23H and the insertion hole may be provided on the proximal end surface of the second housing 20 and the distal end surface of the first housing 10, respectively. As long as the state or the disconnected state is maintained, a combination of other shapes may be used.

(First housing)
The first housing is covered with a cylindrical body having an internal space. This cylindrical body is formed by integrating a plate-like distal end surface 10E, and is fixed by a pin 10P. The motor M is accommodated at a position near the base in the internal space, and the first rotor 11 mechanically connected to the motor shaft A is accommodated at a position near the tip in the internal space. The first rotor 11 is fixed to the front side of the motor shaft A of the motor M. Specifically, the motor shaft A extends to the front side along the cylinder axis of the first housing, the periphery is covered with a connection frame formed on the proximal end side of the first rotor 11, and the connection frame has a cylinder diameter. It is press-fixed to this connection frame by the press-contact pin 11P which penetrates in the direction. Thus, the first rotor 11 is configured to be freely rotatable by a bearing 1B around a short axis fixed at the center of the cylinder axis, and rotates in the vicinity of the tip in the first housing 10 along with the power rotation of the motor shaft A. .

The front end plate constituting the front end surface 10E of the first housing has an inner connecting portion 13H and a front side connecting portion 23H projecting in a claw-like manner on the both center surfaces. The inner connecting portion 13H protrudes into a central hole formed at the front center of the first rotor 11, and is fitted to the peripheral portion of the short shaft in the bearing 1B to hold and fix the short shaft.
The front-side connecting portion 23H is formed so as to protrude in the axial direction from the center of the front end surface 10E of the first housing 10, is fitted into an insertion hole formed in the base end surface of the second housing 20, and protrudes within the insertion hole. Press contact with the circumference. The in-body insertion portion is connected to the distal end surface of the first housing by the insertion of the front side connection portion 23H into the insertion hole and the pressure contact with the central shaft. Also, the pressure contact is easily released by pulling out the body insertion portion.

(Body insertion part)
The in-body insertion portion can be brought into a connected state shown in FIG. 1 a or a connected released state shown in FIG. 1 b by inserting and removing from the distal end surface of the first housing 10.
The in-vivo insertion portion includes a second rotor 31 having a second magnetic body 32 in the vicinity of the proximal end, and the second magnetic body 32 is in the magnetic field of the first magnetic body 12. A substantially cylindrical second housing 20 releasably connected to the front side of the first housing 10;
A transmission rod 30 that extends in the cylinder of the second housing 20, is connected to the second rotor 31 at its base, and transmits the rotational force of the second rotor 31 to its front end;
A third rotor 40 which is provided with an ultrasonic probe 41 exposed on the outer peripheral side surface and which is connected to the front end of the transmission rod 30 and incorporated near the tip of the second housing;
A tip cap 2E attached to the front side of the third rotor is integrally provided.

A central shaft 23 that passes through the central portion of the second housing 20, the third rotor 40, and the tip cap 2 </ b> E is inserted and fixed at the axial center of the body insertion portion. The central shaft 23 is fixed to the distal end cap 2 </ b> E so as not to rotate, and extends to the vicinity of the insertion hole on the proximal end surface of the second housing 20. A transmission rod 30 and a cylindrical transmitter 43 are covered around the central shaft 23 via bearings 2B and 3B. The central shaft 23 and the bearings 2B and 3B constitute a rotation support mechanism that supports the transmission rod 30 and the transmitter 43 so as to freely rotate.

The transmission rod 30 is accommodated in the second housing so as to be freely rotatable. The transmission rod 30 has a rod body that extends in a circular cylindrical shape, and a disk-like second rotor 31 is expanded and fixed to the base end portion of the rod body. A cylindrical third rotor 40 is fixed to the tip of the rod of the transmission rod 30 of the first embodiment, and the third rotor 40 rotates with the rotation of the transmission rod 30. The central shaft 23 is inserted through the internal holes of the second rotor 3120, the transmission rod 30, and the third rotor 40 that are integrally configured, and can freely rotate around the central shaft 23 by the rotation mechanism. .

(Third rotor 40)
The third rotor 40 is composed of a rotating cylinder fixed to the tip of the transmission rod 30 at the tip of the second housing 20 and attached rotatably on the same axis as the cylinder axis of the second housing. One ultrasonic probe 41 is provided on the cylinder side surface of the rotor 40 with the outer side in the cylinder radial direction being the center of the directing direction.

In the ultrasonic probe device according to the first embodiment, the axial cross section of the central portion in the length direction of the third rotor 40 corresponding to the AA cross section position in FIG. Appears as shown in FIG. In the axial cross-sectional view of FIG. 3, a communication passage 42 is formed inside the third rotor 40, and one ultrasonic probe is provided at the tip of each communication passage around the third rotor 40. 41 is exposed and fixed to the outer periphery. The exposed portion is an ultrasonic probe surface, and ultrasonic signals are transmitted and received from the ultrasonic probe surface radially outward. The transmission signal and the reception signal are electrically connected to the transmitter 43 through the communication path, and the signal is once recorded in the transmitter. The transmitter 43 transmits a reception signal to an external receiver (not shown), and analyzes an ultrasonic probe image with an external analyzer (not shown).

(Transmission of rotational force)
In Example 1, when the first rotor 11 is rotated by the rotation mechanism, the second rotor 31 is rotated together with the second magnetic body that has received the magnetic moment of the first magnetic body,
When the second rotor 31 is rotated by the magnetic moment of the first magnetic body, the transmission rod 30 transmits a rotational force to the front-side third rotor 40 as the second rotor 31 rotates. Then, the third rotor 40 to which the rotational force is transmitted rotates on the outer peripheral side surface of the third rotor 40. As a result, the ultrasonic probe fixed to the third rotor 40 rotates and moves along the outer periphery of the front side portion of the second housing, and the outer circumferential direction of the body insertion portion is moved in the radial direction. Non-contact probe.

In the ultrasonic probe apparatus according to the second embodiment shown in FIG. 4, four ultrasonic probes 41 are provided at substantially equal intervals around the third rotor 40, and from the back side of each ultrasonic probe 41. Communication passages 42 are formed in the inner central direction of the third rotor 40. The other components, including the first housing 10, the second housing 20, and the transmission rod 30, the component shape, and the rotation operation are all the same as in the first embodiment.

More specifically, in the ultrasonic probe device of the second embodiment, the axial cross section (that is, the ultrasonic probe portion of the third rotor in the longitudinal direction corresponding to the AA cross sectional position in FIG. 2). A front-view enlarged cross-section) appears as shown in FIG. In the axial cross-sectional view of FIG. 4, a communication passage 42 having a cross-shaped cross-section in the axial section is formed inside the third rotor 40, and is located at the peripheral portion of the third rotor 40 at the tip position of each communication passage. The ultrasonic probe 41 is fixed.

In the ultrasonic probe of the third embodiment shown in FIGS. 5 to 9, in addition to the magnetic field rotation mechanism of the transmission rod 30 base portion by the first magnetic body and the second magnetic body. It has a magnetic field rotation mechanism at the tip of the transmission rod 30 made of a third magnetic body and a fourth magnetic body. Further, the third rotor rotates the magnetic field around a radial direction axis orthogonal to the rotation axis of the rod, and the ultrasonic probe 40 provided on the head of the third rotor has a radial direction (see FIG. The ultrasonic probe can be rotated and moved in the direction of the arrow 8).

Specifically, in the ultrasonic probe device of the third embodiment, the transmission rod 30 is integrally fixed to the tip of the second rotor 31 that holds and fixes the second magnetic body 32, and the tip of the transmission rod 30 is The third holding part 33 is configured by expanding the diameter, and the third magnetic body 34 is embedded and fixed in the third holding part 33. In addition, a cylindrical extension rod 45 </ b> H is formed to protrude from the front side of the third holding portion 33. The second rotor 31, the transmission rod 30, the third holding portion 33, and the extension rod 45 are all configured integrally, and around the central shaft 23 by a bearing 2 </ b> B incorporated in a cylindrical hole inside the transmission rod 30. It is held freely rotatable.

Further, in the ultrasonic probe apparatus according to the third embodiment, the substantially cylindrical support base 4F is coaxially connected to the front portion of the second housing 20 so as not to rotate, and intersects the axis from the cylindrical side surface of the support base. Two third rotors 40 are provided so as to protrude in the protruding axis direction. Each of the two third rotors 40 is formed of a flat cylindrical rotor having a crown-shaped head.

The support base 4F has a central shaft portion that is hollowed out in a circular shape, and a cylindrical extension rod 45H is accommodated in the hollowed-out portion. The central shaft 23 is inserted into the extension rod 45H via an annular bearing 3B.

Each rotating body is embedded in a frame hole formed away from the cylindrical side surface of the support base 4F, and is held so as to be freely rotatable around an axis orthogonal to the housing axis. Here, an annular fourth magnetic body is incorporated in the rotating body along the peripheral side surface of the flat cylinder, and a protruding pin 45 protrudes from the center of the bottom of the flat cylinder.

On the other hand, an insertion hole for inserting the protruding pin 45 is formed in the center of the bottom of the frame hole of the support base 4F. An insertion hole frame-shaped annular bearing 4B is incorporated around the insertion portion of the protruding base portion of the protruding pin 45 inserted into the insertion hole. The projecting base of the projecting pin 45 is held by the annular bearing 4B so as to be freely rotatable (FIGS. 7 and 8). Further, the tip portion of the protruding pin 45 is inserted into a pin hole formed on the side surface of the extension rod 45H, and the movement of the pin position is restricted. And the rotary body can rotate in the shape of a piece by the bearing mechanism 4B incorporated in the peripheral part of the protrusion part of the rotary body.

  The head of the third rotor 40 is a semicircular projecting body that protrudes from the cylindrical side surface of the support base in a projecting axial direction intersecting the axis and is rotatably mounted around the projecting axis. Two ultrasonic probes having a curved probe surface are incorporated along the partially spherical projecting surface at the periphery of the projecting side surface of the projecting body (FIG. 6). Then, the rotational force of the transmission rod 30 is changed in direction within the support base and transmitted as a rotational force around the protruding shaft of the protruding body.

(Third and fourth magnetic bodies)
In the third embodiment, the tip of the transmission rod 30 expands to form the transmission holding portion 33, and the third magnetic bodies 34 and 35 are embedded and fixed in the transmission holding portion 33. The third magnetic bodies 34 and 35 are composed of a block-shaped positive third magnetic body 34 and a negative third magnetic body 35 whose polar directions are different from each other. As shown in FIG. Negative third magnetic bodies 35 are alternately formed adjacent to each other in the circumferential direction to form a substantially doughnut-shaped magnetic surface and exposed at the tip surface of the second rotor 3120. An annular bearing 210 that freely rotates with respect to the holding frame at the center of the cover base end is formed on the inner part of the doughnut-shaped magnetic surface, and the bearing 3B and the central shaft 23 protrude from the inner part. It is formed.

(Power transmission of Example 3)
In the third embodiment, the first magnetic body 12 forms a first rotating magnetic field by the rotated first rotor 11 and applies a first magnetic moment to the second magnetic body 32 by the first rotating magnetic field. The second magnetic body 32 that has been subjected to a magnetic reaction with a magnetic moment is applied together with the second rotor 31, the transmission rod 30, and the transmission magnetic body 34 by the rotation mechanism (the central shaft 23 and the bearing 2B) inside the transmission rod 30. , Rotationally move with respect to the second housing 20.

The third magnetic body 34 forms a third rotating magnetic field by the rotated transmission holding portion 33, and a third magnetic moment is applied to the fourth magnetic body 44 by the third rotating magnetic field. The fourth magnetic body 44 that is magnetically reacted with the third magnetic moment is rotated about the radial direction axis by the rotation mechanism of the third rotor 40. As a result, the ultrasonic probe can be moved three-dimensionally.

  Other configurations, shapes, and rotation operations not specifically mentioned are the same as those in the first embodiment.

(Ultrasonic probe system)
Further, an ultrasonic probe system of the present invention includes any one of the above ultrasonic probe devices that acquires probe data in a non-contact manner by an ultrasonic probe, and an analysis device that analyzes the acquired probe data; It comprises. The ultrasonic probe in this ultrasonic probe system has an ultrasonic probe in either the inside of the third rotor 40 or the tip cap 2E attached to the tip of the third rotor 40. 41 includes a transmitter 43 that transmits probe data of 41. The analysis apparatus includes a receiver that receives the probe data transmitted from the transmitter 43, and analyzes the probe data acquired by one or several other ultrasonic probe apparatuses.

When the probe is inserted into the body and probed, the front-side body insertion portion including the second housing is disconnected from the tip of the first housing, and this is replaced or washed, so that higher hygiene management can be achieved. Can be done. The internal insertion part is unitized to provide heat and water resistance, and multiple internal insertion part units with different sizes are prepared in advance, so that one of the holders can be replaced at the front of the first housing. If it can be connected, the in-vivo insertion portion subjected to the hygiene management process or the in-vivo insertion portion corresponding to the user can be selectively used.

DESCRIPTION OF SYMBOLS 10 1st housing 10E Front end surface 11 1st rotor 12 1st magnetic body 2E End cap 23 Central shaft 23H One connection part (front side connection part)
20 Second housing 30 Transmission rod 31 Second rotor 32 Second magnetic body 4F Support base 40 Third rotor 41 Ultrasonic probe 42 Communication path 43 Transmitter

Claims (5)

A substantially cylindrical first housing provided with a first rotor partly having a first magnetic body in the vicinity of the tip and a rotation mechanism for rotating the first rotor inside or behind the first rotor. When,
A second rotor having a second magnetic body in part is provided near the base end, and the second magnetic body is connected to the front side of the first housing in a state where the second magnetic body enters the magnetic field influence region of the first magnetic body. A substantially cylindrical second housing having an internal hole ;
A central shaft extending through the inner hole of the second housing to the vicinity of the proximal end surface of the second housing;
In the cylinder of the second housing, it is extended and supported so as to be freely rotatable about the central axis, and is connected to the base of the second rotor to transmit the rotational force of the second rotor to its front part. The rod,
Is connected to the tip portion of the transmission rod is built into the tip vicinity of the second housing, it was equipped with the third rotor having to expose the ultrasonic probe on the outer peripheral side surface, and
When the first rotor is rotated by the rotation mechanism, the second rotor rotates together with the second magnetic body that receives the magnetic moment of the first magnetic body around the non-rotating central axis ,
When the second rotor is rotated by the magnetic moment of the first magnetic body, the transmission rod transmits the rotational force to the third rotor on the front side around the non-rotating central axis as the second rotor rotates,
The ultrasonic probe exposed to the side peripheral surface of the third rotor rotates and rotates, and the outer periphery of the front side portion of the second housing is contactlessly probed. Acoustic probe. Each of the distal end portion of the first housing and the proximal end portion of the second housing is provided with a pair of coupling mechanisms that can be disconnected from each other. It has a front side connecting portion that is formed to protrude in the axial direction from the center,
The second housing is connected to the tip of the first housing by fixing the central shaft so that the front shaft is in contact with the central shaft in the inner hole of the second housing and is not rotatable.
The ultrasonic probe apparatus according to claim 1 , wherein the second housing is removed from the tip of the first housing by releasing the pressure-contact of the front side connecting portion from the central axis . The third rotor is composed of a rotating cylindrical body fixed to the tip of the transmission rod at the tip of the second housing and rotatably mounted coaxially with the cylindrical axis of the second housing,
The plurality of ultrasonic probes centering in the direction of the cylinder radial direction are provided on the cylindrical side surface of the third rotor at equal intervals around the third rotor . Ultrasonic probe. A substantially cylindrical support base is coaxially connected to the tip of the second housing,
The third rotor is a protrusion that protrudes on the cylindrical side surface of the support base and is rotatably attached around the protrusion axis.
A plurality of ultrasonic probes are exposed and incorporated on the protruding side of the protruding body,
The ultrasonic inspection apparatus according to claim 1, wherein a rotational force of the connecting rod is redirected in the support base and transmitted as a rotational force around a protrusion axis of the protrusion. An ultrasonic wave comprising: the ultrasonic probe device according to any one of claims 1 to 4 that acquires probe data in a non-contact manner by an ultrasonic probe; and an analyzer that analyzes the acquired probe data. A probe system,
The ultrasonic probe device includes a transmitter for transmitting probe data by the ultrasonic probe, either inside the third rotor or in a tip cap attached to the tip of the third rotor. Prepared,
The analysis apparatus is an ultrasonic inspection system including a receiver that receives probe data transmitted from a transmission apparatus.