JP2009240709A - In vivo image diagnostic probe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in vivo image diagnostic probe preventing abnormal vibration when rotating at a high speed in a state of having a non-stored portion of a sheath by the movement to a proximal end side of a data acquisition shaft. <P>SOLUTION: This in vivo image diagnostic probe 1 comprises a sheath 3 and the data acquisition shaft 2 movable in the interior of the sheath 3. The data acquisition shaft 2 can axially move in the sheath 3 only between a first position, or the distal side in the sheath, and a second position, or a predetermined length toward the proximal side from the first position. The data acquisition shaft is provided in the interior of a hollow shaft 22 and has a vibration suppression section 20 that has a length same to or longer than the axially movable distance of the data acquisition shaft 2 and suppresses the vibration when the data acquisition shaft 2 rotates. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an in-vivo diagnostic imaging probe that is inserted into a body cavity such as a blood vessel and a blood vessel and used to display a cross-sectional image of the lumen.

Conventionally, image diagnosis is performed by inserting a catheter having an imaging function into a blood vessel such as a coronary artery of the heart or a blood vessel such as a bile duct.
An example of the diagnostic imaging apparatus is an intravascular ultrasound (IVUS) apparatus. In general, an intravascular ultrasound diagnostic device uses a probe that contains an ultrasonic transducer in a blood vessel to perform radial scanning, and receives reflected waves (ultrasound echoes) reflected by living tissue in the body cavity using the same ultrasonic transducer. Thereafter, processing such as amplification and detection is performed, and a cross-sectional image of the blood vessel is drawn based on the intensity of the generated ultrasonic echo.
In addition, an optical coherence tomography (OCT) has been used as an image diagnostic apparatus. As an optical coherence tomographic diagnosis apparatus, there is one shown in Japanese Patent Application Laid-Open No. 2007-268133 (Patent Document 1) proposed by the present applicant. The optical coherence tomography diagnosis apparatus inserts a catheter containing an optical fiber with a probe containing an optical lens and an optical mirror at the tip into the blood vessel, and while scanning the optical mirror arranged on the tip side of the optical fiber in a radial scan, The blood vessel is irradiated with light, and a cross-sectional image of the blood vessel is drawn based on the reflected light from the living tissue. Furthermore, recently, an image diagnostic apparatus using an optical frequency domain imaging method (OFDI), which is called next-generation OCT, has also been proposed.
Then, in the diagnostic imaging apparatus using the in-vivo diagnostic imaging probe, the sheath and the data acquisition shaft are inserted along the guide wire that has reached the affected area in advance, and the sheath is indwelled. By moving to the end side (so-called pull back), continuous observation is performed across the affected area.
The diagnostic imaging apparatus used for OCT and OFDI is composed of a sheath and a data acquisition shaft. By rotating the data acquisition shaft at a high speed within the sheath and moving the data acquisition shaft toward the proximal end while rotating at a high speed. Get an image.
JP 2007-268133 A

As a result of researches by the present inventor, it has been found that the data acquisition shaft may cause abnormal vibration during high-speed rotation. The abnormal vibration is considered to be caused by the clearance between the data acquisition shaft and the sheath, and in particular, abnormal vibration occurs at the proximal end portion of the sheath. In particular, after pulling back the data acquisition shaft from the sheath, it was found that the base end portion of the data acquisition shaft is not housed in the sheath, resulting in greater vibration.
Accordingly, an object of the present invention is an in-vivo diagnostic imaging probe comprising a sheath and a data acquisition shaft that is housed in the sheath and that is slid in a predetermined long axis direction during use. Abnormal vibration of the data acquisition shaft during high-speed rotation with the entire shaft stored, and the data acquisition shaft is pulled back from the sheath, and the base end of the data acquisition shaft is not stored in the sheath An in-vivo diagnostic imaging probe that can prevent abnormal vibration of the data acquisition shaft during high-speed rotation and has excellent operability is provided.

What solves the subject of this invention is as follows.
(1) An in-vivo diagnostic imaging probe comprising: a sheath to be inserted into a living body; and a data acquisition shaft that is housed in the sheath and is movable in the axial direction within the sheath. The shaft for driving includes a drive transmission hollow shaft and a tip portion exposed from the distal end portion of the hollow shaft, and is rotated by a rotational force applied at the proximal end portion. It is movable in the sheath in the axial direction between a first position on the distal end side in the sheath and a second position on the proximal end side for a predetermined length from the first position, and Movement from the first position to the distal end side and from the second position to the proximal end side is limited, and the data acquisition shaft is provided in the hollow shaft, and the data acquisition is performed. for An in-vivo diagnostic imaging probe having a vibration suppression unit that has a length equal to or longer than the axially movable distance of the shaft and suppresses vibration during rotation of the data acquisition shaft.

(2) The sheath includes a sheath hub provided at a proximal end portion of the sheath, the sheath hub includes a protruding portion protruding inward, and the data acquisition shaft is the data acquisition shaft. The in-vivo diagnostic imaging probe according to (1), further comprising an engaging portion that engages with the protruding portion when moving toward the proximal end side with respect to the sheath and restricts the second position.
(3) The in-vivo diagnostic imaging probe includes an outer tube that encloses a proximal end portion of the hollow shaft of the data acquisition shaft and terminates on a distal end side of a predetermined length from the proximal end side of the hollow shaft. The in-vivo diagnostic imaging according to (1) or (2), wherein the outer tube includes an intrusion portion into the sheath that is equal to or longer than the axially movable distance of the data acquisition shaft. probe.
(4) The sheath is provided at a shaft lumen for housing the data acquisition shaft, a guide wire lumen that opens at a distal end of the sheath and extends to a proximal end side of a predetermined length, and a proximal end portion of the sheath The in-vivo diagnostic imaging probe according to any one of (1) to (3), further comprising a sheath hub that is provided.
(5) The in-vivo diagnostic imaging probe has an outer tube that can enter the sheath from a proximal end portion of the sheath and has a length equal to or longer than the axially movable distance of the data acquisition shaft. An operation member having a tube hub provided at a proximal end portion of the outer tube, and the hollow shaft of the data acquisition shaft passes through the outer tube of the operation member, and the data acquisition shaft The shaft moves together with the operation member in a predetermined long axis direction during use, and at the time of the movement, the hollow shaft is encapsulated in the outer tube and is not exposed (1) to (4). The in-vivo diagnostic imaging probe according to any one of the above.
(6) The in-vivo diagnostic imaging probe according to (5), wherein the sheath hub includes a seal member that can slide the outer tube in a substantially liquid-tight state.
(7) The vibration suppression unit may have a length that is twice as long as the axial movement distance of the data acquisition shaft or a length slightly longer than the distance (1) to (6). The in-vivo imaging diagnostic probe as described.
(8) The in-vivo diagnostic imaging probe according to any one of (1) to (7), wherein the vibration suppression unit is formed by a vibration control layer provided in the hollow shaft.

(9) The in-vivo diagnostic imaging probe according to any one of (1) to (7), wherein the vibration suppression unit is formed by a reinforcing tube that reinforces the hollow shaft in the hollow shaft.
(10) The in-vivo diagnostic imaging probe according to any one of (1) to (7), wherein the vibration suppression unit is formed of a filler filled in the hollow shaft.
(11) The in-vivo diagnostic imaging probe according to any one of (1) to (10), wherein the vibration suppression unit has a length of 20 to 40 cm.
(12) The data acquisition shaft includes a connector that can be connected to the drive transmission hollow shaft, an optical fiber that penetrates through the hollow shaft and has the tip at the tip, and a connection portion of an external drive device. The in-vivo diagnostic imaging probe according to any one of (1) to (11), wherein the probe is rotated by a rotational force applied by the connector.
(13) The vibration suppressing unit is formed of a reinforcing tube that encapsulates the optical fiber, and the reinforcing tube is fixed to an outer surface of the optical fiber or an inner surface of the hollow shaft. In vivo diagnostic imaging probe.
(14) The optical fiber includes a high-strength portion having a length that is the same as or longer than the axially movable distance of the data acquisition shaft from the base end side, and the vibration suppressing portion is formed by the high-strength portion. The in-vivo diagnostic imaging probe according to (12), which is formed.
(15) The in-vivo diagnostic imaging probe according to (12), wherein the vibration suppressing unit is formed of a curable filler filled between the optical fiber and the hollow shaft.
(16) The in-vivo diagnostic imaging probe according to (12), wherein the optical fiber includes a vibration suppressing material covering portion, and the vibration suppressing portion is formed by the vibration suppressing material covering portion.
(17) The data acquisition shaft includes a connector fixed to a base end portion of the optical fiber, and a connection member that connects the base end portion of the hollow shaft and the connector, and the data acquisition shaft includes The in-vivo diagnostic imaging probe according to any one of (12) to (16), which is rotated by a rotational force applied by the connector.
(18) The data acquisition shaft includes the drive transmission hollow shaft, a cylindrical housing fixed to a distal end of the hollow shaft, and an ultrasonic transducer constituting the tip portion housed in the housing; The in-vivo diagnostic imaging probe according to any one of (1) to (11), comprising a connector connectable to a connection portion of an external drive device, and rotating by a rotational force applied by the connector.
(19) The in-vivo diagnostic imaging probe according to (18), wherein the vibration suppression unit is formed by a reinforcing tube inserted into the hollow shaft and fixed to the inner surface of the hollow shaft.
(20) The in-vivo image diagnosis according to (18), wherein the vibration suppression unit includes a vibration suppression material covering portion on an inner surface of the hollow shaft, and the vibration suppression portion is formed by the vibration suppression material covering portion. probe.

The in-vivo diagnostic imaging probe of the present invention comprises a sheath and a data acquisition shaft that can move in the axial direction in the sheath, and the data acquisition shaft penetrates through the drive transmission hollow shaft and the hollow shaft, And a tip portion exposed from the distal end portion of the hollow shaft, and rotated by a rotational force applied at the proximal end portion, and further, a first position on the distal end side in the sheath; It is movable in the sheath in the axial direction between the first position and the second position, which is the base end side for a predetermined length from the first position, and from the first position to the distal end side and from the second position to the proximal end side Further, a vibration suppression unit provided in the hollow shaft and having a length equal to or longer than the axially movable distance of the data acquisition shaft is provided.
Therefore, since this in-vivo diagnostic imaging probe has the above-described vibration suppressing portion, the abnormal state at the time of high-speed rotation in the sheath housing state at the proximal end portion of the data acquisition shaft and the sheath non-housing state due to movement toward the proximal end side Since vibration can be prevented and the vibration suppressing portion is provided in the hollow shaft, the outer diameter of the data acquisition shaft is not increased.

An in-vivo diagnostic imaging probe of the present invention will be described with reference to an embodiment shown in the drawings.
FIG. 1 is a partially omitted external view of an in-vivo diagnostic imaging probe according to the present invention. FIG. 2 is an enlarged cross-sectional view of the distal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 3 is an enlarged cross-sectional view of the proximal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 4 is an explanatory diagram for explaining the operation of the in-vivo diagnostic imaging probe shown in FIG. FIG. 5 is a partially omitted external view of the data acquisition shaft of the optical cartel apparatus shown in FIG. 6 is an enlarged cross-sectional view of the proximal end portion of the data acquisition shaft shown in FIG. FIG. 7 is an enlarged cross-sectional view of the vicinity of the base end of the data acquisition shaft shown in FIG.
The in-vivo diagnostic imaging probe 1 of the present invention includes a sheath 3 to be inserted into a living body (specifically, a body cavity), and data acquisition that is housed in the sheath 3 and that can move in the sheath in the axial direction. Shaft 2 for use.
The data acquisition shaft 2 includes a drive transmission hollow shaft 22 and a tip portion 54 exposed from the distal end portion of the hollow shaft 22, and rotates by a rotational force applied at the proximal end portion. The data acquisition shaft 2 moves in the sheath 3 in the axial direction between a first position on the distal end side in the sheath 3 and a second position on the proximal end side for a predetermined length from the first position. This is possible, and movement from the first position to the distal end side and from the second position to the proximal end side is limited. Further, the data acquisition shaft is provided in the hollow shaft 22, has a length equal to or longer than the axially movable distance of the data acquisition shaft 2, and vibrates during rotation of the data acquisition shaft 2. The vibration suppression part 20 to suppress is provided.

The in-vivo diagnostic imaging probe of the present invention is used in an optical coherence tomography diagnostic device, an optical frequency domain imaging diagnostic device, etc., a diagnostic device optical probe and an ultrasonic in vivo insertion probe.
The in-vivo diagnostic imaging probe 1 of this embodiment is an embodiment applied to an optical in-vivo diagnostic imaging probe. The in-vivo diagnostic imaging probe 1 includes a data acquisition shaft 2, a sheath 3 that accommodates the data acquisition shaft, and an operation member 4 that penetrates the data acquisition shaft and is positioned on the proximal side from the sheath 3. .
As shown in FIGS. 2, 3, 5, and 6, the data acquisition shaft 2 includes a drive transmission hollow shaft 22 and a chip that penetrates through the hollow shaft 22 and is exposed from the tip of the hollow shaft 22. The optical fiber 21 which has the part 54, the connector connected to the base end part of the optical fiber 21, and the connection member 25 which connects the base end part of the hollow shaft 22, and a connector are provided. The data acquisition shaft 2 is rotated by the rotational force applied by the connector.
As shown in FIG. 6, the drive transmission hollow shaft 22 is a hollow body having a predetermined length having a lumen that penetrates from the proximal end to the distal end. The lumen portion can accommodate the optical fiber. As the drive transmission hollow shaft 22, a coil, a round wire or a flat metal wound in a single layer or multiple layers in a coil shape or a blade shape, or a resin tube coated or embedded with a metal rigidity imparting body is used. Is done. Specifically, a flat plate made of stainless steel (SUS304, SUS316, etc.) or the like and wound in three layers and eight strips is preferable.

As the optical fiber 21, a known solid optical fiber having a certain length can be used. As the optical fiber, for example, a single mode optical fiber can be used. Such an optical fiber includes a core that transmits light and a clad that covers the outer surface of the core and has a refractive index slightly smaller than that of the core. In this optical fiber, only when the incident angle is larger than the critical angle, the light is repeatedly transmitted through the total reflection at the interface between the core and the clad. Moreover, it is preferable that the outer surface of the clad of the optical fiber is covered with a resin material called a jacket.
A tip portion 54 is optically connected to the tip of the optical fiber 21 as shown in FIG. In the in-vivo diagnostic imaging probe of this embodiment, a lens is used as the tip portion 54. As the lens, a ball lens, a drum lens, a hemispherical lens, a GRIN lens, a half drum lens, a Selfox lens, or the like is used. In particular, the lens is preferably a ball lens.
Further, as shown in FIG. 3, the data acquisition shaft 2 includes a stopper 26 at the base end thereof. Specifically, the optical fiber 21 is joined to the proximal optical fiber 28 at the joint 72 at the proximal end. A ferrule 27 is fixed to the base end portion of the base end side optical fiber 28. The ferrule 27 is housed in the proximal end portion of the stopper 26 and is fixed to the stopper 26. Therefore, the optical fiber 21 is indirectly fixed to the stopper 26. The stopper 26, the ferrule 27, and the joint portion 29 constitute a connector.

Moreover, the base end part of the hollow shaft 22 is being fixed to the front-end | tip part of the cylindrical connection member 25, as shown in FIG. Specifically, the base end portion of the hollow shaft 22 is fixed to the connection member 25 via a metal sleeve 73 that encloses the base end portion of the hollow shaft 22 and is accommodated in the connection member 25. The proximal end portion of the connection member 25 is fixed to the distal end portion of the stopper 26. Specifically, the proximal end portion of the connection member 25 and the distal end of the stopper 26 are fixed by a fixing member 71 that has penetrated into the both. Therefore, the hollow shaft 22 is indirectly fixed to the stopper 26.
Therefore, the data acquisition shaft, in other words, the hollow shaft and the optical fiber are rotated by the rotational force applied to the stopper 26. A joint portion 29 is provided at the base end portion of the data acquisition shaft 2.
Then, as shown in FIG. 2, a tip portion storing tubular member 52 is fixed to the distal end portion of the hollow shaft 22. The tubular member 52 is a tubular body having an opening for exposing the tip portion 54, and is fixed to the distal end portion of the hollow shaft 22 by a solder 56 at the base end portion thereof. In addition, a sleeve 55 is provided at the base end portion of the tip portion 54 so as to extend toward the base end side of a predetermined length and enclose the tip portion of the optical fiber 21. Further, the tip portion 54 is fixed to the cylindrical member 52 by a fixing member 57 at the base end portion thereof. Therefore, the optical fiber 21 is fixed to the hollow shaft 22 at the tip.
Further, a passability improving member 53 extending in the distal direction is attached to the distal end portion of the tip portion storing cylindrical member 52. As the passability improving member, a coil body as illustrated is suitable.

The sheath 3 is a tube body having a shaft lumen 37 for housing a data acquisition shaft extending in the distal direction from the proximal end, and a guide wire lumen 63 that opens at the distal end of the sheath 3 and extends to the proximal end side for a predetermined length. It is.
The sheath 3 is fixed to the sheath body 31, the sheath body hub 32 provided at the proximal end of the sheath body, the sheath distal end portion 61 provided at the distal end of the sheath body 31, and the proximal end portion of the sheath body hub 32. A sheath tube 33 and a tube hub 34 fixed to the proximal end of the sheath tube 33.
The sheath body 31 is a tube body, which is a catheter material, such as polyolefin, polyurethane, polyacetal, polyimide, and fluorine resin tubes, stainless steel (SUS304, SUS316, etc.) metal tubes, NiTi alloys, etc. In addition, a super elastic metal tube, or a composite tube in which a wire of resin and stainless steel (SUS304, SUS316, etc.) is coiled or wound is used. The thickness of the sheath body 31 is 30 to 300 μm, and it is desirable that the sheath body 31 has a tensile strength at least of 0.4 kgf or more.
The distal end portion preferably includes a signal acquisition window portion formed in a signal transmissive material that transmits a signal such as light and ultrasonic waves. Further, the entire distal end portion of the sheath body 31 may be formed of a signal transmissive material. The window has a length equal to or longer than the above-described axially movable distance of the data acquisition shaft.

The sheath body hub 32 is fixed to the proximal end of the sheath body 31 inside. Further, as shown in FIG. 1, the distal end portion of the sheath main body hub 32 is reduced in diameter toward the distal end side to constitute a kink resistant tube.
A sheath tube 33 extending to the base end side of a predetermined length is fixed to the base end portion of the sheath main body hub 32. The sheath tube 33 has a length that is the same as or slightly longer than the maximum moving distance to the proximal end side of the data acquisition shaft 2 in use. And it is preferable that the sheath tube 33 has transparency which can visually recognize the inside. Then, by providing a marker on the outer surface of the hollow shaft 22 at a portion that becomes the distal end 20a of the vibration suppression unit 20 described later, the distal end 20a of the vibration suppression unit 20 (specifically, when moving to the proximal side of the data acquisition shaft 2) Specifically, the tip 23a) of the reinforcing tube 23 can be confirmed. As the sheath tube 33, a rigid or semi-rigid resin tube is suitable. Specifically, polyolefin-based, polyurethane-based, polyacetal-based, polyimide-based, and fluorine-based resin tubes that are catheter materials can be used.
A sheath tube hub 34 is fixed to the proximal end portion of the sheath tube 33. The tube hub 34 includes a distal end side member 34a and a proximal end side member 34b, and a proximal end portion of the sheath tube 33 enters and is fixed therein. Further, inside the proximal end of the tube hub 34 (specifically, inside the proximal end side member 34b), a seal member 36 capable of sliding an outer tube of the operation member 4 described later in a substantially liquid-tight state. The seal member is fixed to the tube hub 34 by a cap member 35.

And the sheath front-end | tip part 61 is provided in the front-end | tip of the sheath main body 31, as shown in FIG. The sheath distal end portion 61 includes a guide wire lumen 63 including a distal end opening 63a and a proximal end side opening 63b located on the proximal end side of a predetermined length. In particular, in the embodiment shown in FIG. 2, the sheath distal end portion 61 includes a distal end portion forming member 62, and the guide wire lumen 63 has a wire lumen forming tube body embedded in the distal end portion forming member 62. Yes. Further, the sheath distal end portion 61 is located on the distal end side from the distal end portion of the first contrast portion 64 provided at a portion slightly proximal to the distal end portion and the distal end portion of the sheath distal end portion and the data acquisition shaft 2. A second contrast unit 65 provided at the site is provided.
And the in-vivo diagnostic imaging probe 1 of this Example is provided with the operation member 4 as shown in FIG.1, FIG3 and FIG.4. The operating member 4 can enter the shaft lumen 37 from the proximal end portion of the sheath 3 and has an outer tube 42 having a length equal to or longer than the moving distance of the data acquisition shaft 2 in use, and the outer tube 42. A tube hub 43 provided at the base end portion and an operation holding member 41 fixed to the tube hub 43 are provided. The hollow shaft 22 of the data acquisition shaft 2 passes through the outer tube 42 and extends to the distal end side of the sheath 3. Further, since the outer tube 42 has the above-described length, the hollow shaft 22 of the data acquisition shaft 2 is encapsulated in the outer tube 42 and not exposed even when it is moved in the predetermined long axis direction during use. It has become a thing. The outer tube 42 and the vibration suppressing unit 20 described above cooperate to more reliably prevent vibration of the data acquisition shaft during high-speed rotation.

As the outer tube, a hard or semi-rigid resin tube is suitable. Specifically, polyolefin-based, polyurethane-based, polyacetal-based, polyimide-based, and fluorine-based resin tubes that are catheter materials can be used. The operation holding member 41 of the operation member 4 in this embodiment is a cylindrical body extending a predetermined length, and the base end portion of the data acquisition shaft 2 can be stored in the base end portion. .
In the in-vivo diagnostic imaging probe 1 of this embodiment, the data acquisition shaft 2 rotates inside the operation member 4. In addition, a seal member 36 is accommodated in the tube hub 34 constituting the proximal end portion of the sheath 3, and this seal member is in contact with the outer tube of the operation member 4, and includes a data acquisition shaft, Since it does not come into contact, it does not hinder the rotation of the catheter.
In the in-vivo diagnostic imaging probe 1 of the present invention, the data acquisition shaft 2 has a first position on the distal end side in the sheath 3 and a second position on the proximal end side for a predetermined length from the first position. Between the first position and the second position, and the movement from the second position to the proximal side is restricted. The axial distance of the data acquisition shaft 2 is preferably about 10 to 20 cm.

  As shown in FIG. 3, the sheath 3 includes a tube hub 34 provided at the proximal end of the sheath 3, and the tube hub 34 includes a protruding portion 34 c that protrudes inward. In this embodiment, the protrusion 34c is an annular rib protruding inward. The data acquisition shaft includes an engagement portion 42a that engages the protrusion 34c when the data acquisition shaft 2 moves toward the proximal end with respect to the sheath 3 and restricts the second position. Specifically, in the in-vivo diagnostic imaging probe 1 of this embodiment, as described above, the base end side portion of the hollow shaft 22 of the data acquisition shaft 2 is encapsulated, and is predetermined from the base end side of the hollow shaft 22. An outer tube 42 that terminates on the long tip side is provided. The outer tube 42 includes a portion capable of entering the sheath 3 that is equal to or longer than the axially movable distance of the data acquisition shaft 2. An engaging portion 42a that engages with the protruding portion 34c of the sheath 3 and restricts the movement of the data acquisition shaft 2 toward the proximal end is formed at the distal end portion of the outer tube 42. In this embodiment, the engaging portion 42 a is an annular rib formed at the distal end portion of the outer tube 42. The engaging portion 42a may be provided on the outer surface of the hollow shaft instead of the outer tube. Further, the in-vivo diagnostic imaging probe of the present invention is not limited to the above-described one provided with the outer tube 42. In this case, the engaging portion that engages the protruding portion 34c is the outer surface of the hollow shaft. Will be provided.

Further, in the in-vivo diagnostic imaging probe 1 of this embodiment, the data acquisition shaft 2 includes the operation member 4 as described above, and the distal end portion of the operation member 4 is in contact with the proximal end portion of the tube hub 34. Touch. As a result, the data acquisition shaft 2 cannot move further to the distal end side of the sheath 3. Therefore, the first position on the distal end side in the sheath 3 of the data acquisition shaft 2 is regulated by the distal end portion of the operation member 4 and the proximal end portion of the tube hub 34.
As shown in FIGS. 1, 4 to 7, the data acquisition shaft 2 is provided in the hollow shaft 22, and the axially movable distance of the data acquisition shaft 2 from the vicinity of the proximal end portion of the hollow shaft 22. And a vibration suppression unit 20 that suppresses vibration during rotation of the data acquisition shaft 2.
The in-vivo diagnostic imaging probe 1 of this embodiment is a so-called linear scanable in-vivo diagnostic imaging probe. Therefore, when used, the data acquisition shaft 2 has a predetermined length and is axially rearward (base end) with respect to the sheath. Side).
The length of the vibration suppressing unit 20 is axially movable from the vicinity of the proximal end portion of the hollow shaft 22 between the first position on the distal end side and the second position on the proximal end side. It has a length equal to or longer than the distance (in other words, the axially movable length). In other words, when the vibration suppressing unit 20 is moved to the proximal end side of the data acquisition shaft 2 during use (when the protrusion 34c and the engaging portion 42a are engaged), the distal end of the vibration suppressing portion 20 is the sheath 3. It has a length so that it can be positioned inside. That is, the vibration suppression unit 20 has such a length that the distal end 20a is not in the sheath non-accommodating state even when the data acquisition shaft 2 is moved to the base end side at the time of maximum use. The length of the vibration suppressing portion is preferably 20 cm to 40 cm. As the vibration suppression unit, a vibration suppression reinforcement unit, a vibration absorption suppression unit, and the like can be considered. Preferably, it is a vibration suppression reinforcement part.

In the in-vivo diagnostic imaging probe 1 of this embodiment, as described above, the data acquisition shaft 2 encapsulates the proximal end portion of the hollow shaft 22 and has a distal end with a predetermined length from the proximal end side of the hollow shaft 22. An outer tube 42 that terminates on the side is provided. As shown in FIG. 4, when the data acquisition shaft 2 has moved to the maximum end side (when the protrusion 34c and the engaging portion 42a are engaged), the portion where the outer tube 42 has existed until then. The outer tube 42 does not exist in the length portion in which the data acquisition shaft 2 has moved from the engaging portion 42a of the outer tube 42 in FIG. For this reason, a gap (clearance) between the inner surface of the sheath 3 and the outer surface of the data acquisition shaft 2 at that portion is widened, which may cause vibration. For this reason, when the outer tube 42 is provided as in the in-vivo diagnostic imaging probe 1 of this embodiment, it is preferable that vibration suppression can be performed in a portion where the outer tube does not exist. For this reason, in the in-vivo diagnostic imaging probe 1 of this embodiment, as shown in FIG. 4, the vibration suppressing unit 20 is twice the length of the above-described axially movable distance of the data acquisition shaft 2 or longer than that. It has a slightly long length, and enables vibration suppression at a portion that is a portion where the outer tube does not exist when the proximal end side of the data acquisition shaft 2 is moved.
In addition, since the flexibility of the data acquisition shaft 2 will be hindered if the length of the vibration suppressing portion is too long, it is preferably not more than 2.5 times the axially movable distance of the data acquisition shaft. . In particular, when the data acquisition shaft has an outer tube as described above, it is preferably 2.5 times or less the axially movable distance of the data acquisition shaft. In addition, when the data acquisition shaft does not have an outer tube, it is preferably 1.5 times or less the axially movable distance of the data acquisition shaft.

And it is preferable that the vibration suppression part 20 is formed of the damping layer provided in the hollow shaft 22. FIG. The damping layer is formed by a reinforcing tube, a filler, a vibration suppression material coating, or the like.
In the in-vivo diagnostic imaging probe of this embodiment, as shown in FIGS. 6 and 7, the vibration suppressing unit 20 is configured by a reinforcing tube 23 that encapsulates the optical fiber 21 in the hollow shaft 22. It is a vibration suppression reinforcement part. The reinforcing tube 23 is positioned in the vicinity of the proximal end of the proximal hollow shaft 22 and extends to the distal end side by a predetermined length. As shown in FIG. 4, the reinforcing tube 23 has such a length that the distal end 23 a is housed in the sheath in the maximum movement state of the data acquisition shaft 2 toward the proximal end side. ing. That is, the reinforcing tube 23 has such a length that the distal end 23a is not in the sheath non-accommodating state even when the data acquisition shaft 2 is moved to the proximal end side in maximum use. The length of the reinforcing tube 23 is preferably 20 cm to 40 cm.
As shown in FIG. 7, the reinforcing tube 23 in the in-vivo diagnostic imaging probe 1 of this embodiment is closely attached to the optical fiber 21 and has an outer diameter slightly smaller than the inner diameter of the hollow shaft 22. It has become. For this reason, there is a slight gap between the outer surface of the reinforcing tube 23 and the inner surface of the hollow shaft 22. The reinforcing tube may be a tube that substantially contacts the inner surface of the hollow shaft and does not substantially form a gap between the outer surface of the reinforcing tube 23 and the inner surface of the hollow shaft 22.

Further, the reinforcing tube 23 may be encapsulated without being in close contact with the optical fiber 21 and fixed to the inner surface of the hollow shaft 22 as in the data acquisition shaft 2a of the embodiment shown in FIG. Good. In this data acquisition shaft 2 a, there is a slight gap between the outer surface of the optical fiber 21 and the inner surface of the reinforcing tube 23.
As the reinforcing tube, a resin tube, a fiber tube, a metal tube, or the like is used. The resin tube may be a hard tube, a semi-rigid tube, or a soft tube. As a hard tube, what consists of fluororesins, such as PTFE and ETFE, can be considered. As a semi-rigid tube, what consists of fluororesins, such as polyester (for example, polyethylene terephthalate, polybutylene terephthalate), polyolefin (for example, polyethylene, polypropylene), polyamide, can be considered. As the soft tube, synthetic rubber such as urethane rubber, silicone rubber and butadiene rubber, soft polyvinyl chloride, polyolefin elastomer, polyester elastomer, polyamide elastomer and the like can be used.

  Further, the vibration suppressing unit 20b in the in-vivo diagnostic imaging probe of the present invention may be configured by the high-strength portion 58 of the optical fiber 21 like the data acquisition shaft 2b of the embodiment shown in FIG. The high-strength portion 58 of this embodiment is an enlarged diameter portion. Further, the high strength portion 58 constitutes a vibration suppression reinforcing portion. The optical fiber enlarged diameter portion 58 has a slight gap between its outer surface and the inner surface of the hollow shaft 22. The high-strength portion 58 has a length such that the distal end 58a of the high-strength portion 58 is housed in the sheath during maximum movement of the data acquisition shaft 2b toward the proximal end. That is, even when the data acquisition shaft 2b is in use and has the maximum movement toward the proximal end, the distal end 58a has such a length that the sheath is not stored. The proximal end of the high strength portion 58 is optically connected to the distal end of the proximal end side optical fiber 28. Similarly, the distal end 58 a of the high strength portion 58 is also optically connected to the proximal end of the optical fiber 21. The high-strength portion is preferably constituted by the above-mentioned enlarged-diameter portion, but may be constituted by using a hard optical fiber having substantially the same outer diameter as that of other portions of the optical fiber. Furthermore, the high-strength portion may be formed by using an optical fiber that is harder than other portions of the optical fiber, while having a diameter-expanded portion as described above.

Further, the vibration suppressing unit 20c in the in-vivo diagnostic imaging probe of the present invention injects a curable filler 59 between the optical fiber 21 and the hollow shaft 22 like the data acquisition shaft 2c of the embodiment shown in FIG. May be formed. The curable filler 59 has such a length that the distal end 59a is housed in the sheath when the data acquisition shaft 2c is moved to the proximal end side during use. .
As the curable filler 59, curable fillers such as silicone resins, polyurethane resins, and epoxy resins can be used. Examples of the curable filler for the silicone resin include silicone gel and silicone rubber. As the silicone rubber, RTV silicone rubber having adhesiveness, LTV silicone rubber and the like are preferable. Either is acceptable. And when a thing which shows a certain amount of flexibility after hardening is used as a hardening filler, a vibration suppression part constitutes a vibration absorption suppression part.
The vibration suppression unit may be formed of a vibration suppression material coating that covers the outer surface of the optical fiber. As the vibration suppressing material, the above-mentioned curable filler can be used.

Next, a method for using the in-vivo diagnostic imaging probe of the present invention will be described.
The in-vivo diagnostic imaging probe 1 uses a base end portion (a connector portion of the data acquisition shaft and a base end portion of the operation holding member of the operation member 4) connected to an external drive device (not shown).
The external drive device is connected to the connector of the data acquisition shaft, and a drive source for rotating the catheter at a high speed, a light source for supplying light to the optical fiber of the data acquisition shaft, and a tip portion of the data acquisition shaft A device having an image display function for imaging using light received from the (lens unit) is used.
When the in-vivo diagnostic imaging probe of the present invention is used, the in-vivo diagnostic imaging probe 1 is inserted into a target body cavity. And the base end part of the in-vivo diagnostic imaging probe 1 is connected to an external drive device. When the external driving device is driven, the driving torque is transmitted to the hollow shaft through the connector, the data acquisition shaft rotates, and the tip portion rotates accordingly. When performing an axial scan with the in-vivo image diagnostic probe, the operation holding member 41 of the operation member 4 is gripped and moved to the proximal end side. As a result, as shown in FIG. 4, the data acquisition shaft 2 moves together with the operation member 4 in the proximal direction, and is in a state of being separated from the sheath 3 by a predetermined distance. The portion is not stored in the sheath. In this in-vivo diagnostic imaging probe 1, the portion that becomes the above-described sheath non-housing portion is the vibration suppressing portion 20 as described above. Therefore, the data acquisition shaft does not vibrate abnormally even if high-speed rotation is continued. Good scanning can be continued without causing any trouble.

Next, an in-vivo diagnostic imaging probe according to another embodiment of the present invention will be described with reference to the drawings.
FIG. 11 is a partially omitted external view of an embodiment in which the in-vivo diagnostic imaging probe of the present invention is applied to an ultrasonic in-vivo diagnostic imaging probe. 12 is an enlarged cross-sectional view of a proximal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 13 is an explanatory diagram for explaining the operation of the in-vivo diagnostic imaging probe shown in FIG. FIG. 14 is an enlarged cross-sectional view of the distal end portion of the in-vivo diagnostic imaging probe shown in FIG.
The in-vivo diagnostic imaging probe 100 of this embodiment is an application of the in-vivo diagnostic imaging probe of the present invention to an ultrasonic in-vivo diagnostic imaging probe.
The ultrasonic in-vivo diagnostic imaging probe 100 according to this embodiment includes a sheath 3 inserted into a body cavity and a data acquisition shaft 5 inserted into the sheath 3 and movable within the sheath. The sheath 3 is the same as described above, and the data acquisition shaft 5 has substantially the same configuration except that a signal line and an ultrasonic transducer are provided instead of the optical fiber and the tip. In particular, it is the same in that a hollow shaft and an outer tube 42 enclosing the base end portion of the hollow shaft are provided.
The in-vivo diagnostic imaging probe 100 according to this embodiment includes a sheath 3 inserted into a body cavity and a data acquisition shaft 5 inserted into the sheath 3. The sheath 3 is the same as described above.
The data acquisition catheter 5 in this embodiment can be connected to the drive transmission hollow shaft 102, the ultrasonic transducer 104 fixed to the distal end portion of the hollow shaft 102 by the fixing member 106, and the connection portion of the external drive device. The connector 50 is provided and is rotated by a rotational force applied by the connector 50.

As shown in FIG. 14, the data acquisition shaft 5 uses a transducer 104 having an ultrasonic transducer function for transmitting and receiving ultrasonic waves as a tip portion. The data acquisition shaft 5 is provided with a transducer housing 107 in which the transducer 104 is housed at the tip. The housing 107 is a cylindrical body having an opening for exposing the transducer 104, and is fixed to the distal end portion of the hollow shaft 102 at the base end portion. A passage improving member 103 extending in the distal direction is attached to the distal end portion of the housing 107. As the passability improving member, a coil body as illustrated is suitable.
The drive transmission hollow shaft 102 is a hollow body having a predetermined length having a lumen that penetrates from the proximal end to the distal end. As the drive transmission hollow shaft 102, a coil, a round wire or a flat metal wound in a single layer or multiple layers in a coil shape or a blade shape, or a resin tube coated or embedded with a metal rigidity imparting body is used. Is done. Specifically, a flat plate made of stainless steel (SUS304, SUS316, etc.) or the like and wound in three layers and eight strips is preferable.
Then, as shown in FIG. 14, a signal line 105 including two lead wires is built in the hollow shaft 102, and the tip thereof is connected to the transducer of the transducer 104. Further, the rear end of the signal line 105 is connected to the receptacle 108 of the connector 50 as shown in FIG.

The connector 50 includes a connector housing 81 and an annular elastic member 82 provided on the outer surface thereof. The elastic member 82 is an annular body having a predetermined width, and is fitted into an annular groove having a predetermined width formed on the outer surface of the connector housing 81 so as not to easily move.
The connector housing 81 includes a housing main body 83 and a joint 84 fixed to the rear end of the housing main body 83. A rotor 85 is accommodated in the housing 81, and a receptacle 108 is inserted into the rotor 85. In addition, a seal member 86 having an O-ring 87 therein is accommodated in the housing main body 83. A base end portion of the hollow shaft 102 is fixed to the rotor 85. On the outer surface of the rotor 85, two grooves 90a and 90b extending in the axial direction are provided. The grooves 90a and 90b engage with the two protrusions of the rotor of the external drive device (not shown). Thereby, the rotor 85 is rotated by the rotational force applied to the rotor of the external drive device, and the rotation is transmitted to the hollow shaft 102. Further, the signal line 105 is electrically connected to an external driving device via the receptacle 108.
The outer tube 46 is fixed to the distal end portion of the housing main body 83 by a fixing member 91. The hollow shaft 102 passes through the outer tube 46 and extends to the distal end side of the sheath 3. Furthermore, since the outer tube 46 has a predetermined length, the hollow shaft 102 of the catheter 5 is encapsulated in the outer tube 46 and not exposed even when it is moved in the direction of the predetermined long axis during use. As the outer tube 46, the one described for the outer tube 42 described above can be suitably used.
Also in the in-vivo diagnostic imaging probe 100 of this embodiment, the data acquisition shaft 5 is rotated. The tube hub 34 constituting the proximal end portion of the sheath 3 houses a seal member 36, which is in contact with the outer tube 46 of the catheter 5 and rotates with the hollow shaft 102. Does not interfere with catheter rotation.

In this in-vivo diagnostic imaging probe 100, the data acquisition shaft 5 has a first position on the distal end side in the sheath 3 and a second position on the proximal end side for a predetermined length from the first position. In the meantime, the inside of the sheath 3 can be moved in the axial direction, and movement from the first position to the distal end side and from the second position to the proximal end side is restricted.
As shown in FIG. 12, the sheath 3 includes a tube hub 34 provided at the proximal end portion of the sheath 3, and the tube hub 34 includes a protruding portion 34 c that protrudes inward. In this embodiment, the protrusion 34c is an annular rib protruding inward. The data acquisition shaft 5 includes an engagement portion 42a that engages the protruding portion 34c when the data acquisition shaft 5 is moved to the proximal end side with respect to the sheath 3 and restricts the second position. . Specifically, in the in-vivo diagnostic imaging probe 100 of this embodiment, as described above, the base end side portion of the hollow shaft 102 of the data acquisition shaft 5 is encapsulated, and is predetermined from the base end side of the hollow shaft 102. An outer tube 42 that terminates on the long tip side is provided. The outer tube 42 includes a portion capable of entering the sheath 3 that is equal to or longer than the axially movable distance of the data acquisition shaft 5. An engaging portion 42 a is formed at the distal end portion of the outer tube 42 to engage with the protruding portion 34 c of the sheath 3 and restrict the movement of the data acquisition shaft 5 toward the proximal end side. In this embodiment, the engaging portion 42 a is an annular rib formed at the distal end portion of the outer tube 42. The engaging portion 42a may be provided on the outer surface of the hollow shaft instead of the outer tube. Further, the in-vivo diagnostic imaging probe of the present invention is not limited to the above-described one provided with the outer tube 42. In this case, the engaging portion that engages the protruding portion 34c is the outer surface of the hollow shaft. Will be provided. As the outer tube, the above-mentioned hard or semi-rigid resin tube is suitable.

In the in-vivo diagnostic imaging probe 100 of this embodiment, the data acquisition shaft 5 includes a connector housing 81, and the distal end portion of the connector housing 81 (the distal end portion of the fixing member 91) is the base of the tube hub 34. Abuts the end. As a result, the data acquisition shaft 5 cannot move further to the distal end side of the sheath 3. Therefore, the first position on the distal end side in the sheath 3 of the data acquisition shaft 5 is regulated by the distal end portion of the connector housing 81 and the proximal end portion of the tube hub 34.
The data acquisition shaft 5 is provided in the hollow shaft 102 as shown in FIGS. 11 and 13 and is the same as the axially movable distance of the data acquisition shaft 5 from the vicinity of the proximal end portion of the hollow shaft 102 or A vibration suppression unit 20 that has a longer length and suppresses vibration during rotation of the data acquisition shaft 5 is provided.
The in-vivo diagnostic imaging probe 100 of the present invention is a so-called linear scanable in-vivo diagnostic imaging probe. Therefore, when used, the data acquisition shaft 5 has a predetermined length and is axially rearward (base end side) with respect to the sheath. ).

The length of the vibration suppression unit 20 is axially movable from the vicinity of the proximal end portion of the hollow shaft 102, which is the distance between the first position on the distal end side and the second position on the proximal end side. It has a length equal to or longer than the distance (in other words, the axially movable length). In other words, when the vibration suppressing unit 20 is moved to the proximal end side of the data acquisition shaft 5 during use (when the protrusion 34c and the engaging portion 42a are engaged), the distal end of the vibration suppressing portion 20 is the sheath 3. It has a length so that it can be positioned inside. That is, the vibration suppression unit 20 has such a length that the distal end 20a is not in the sheath non-accommodating state even when the data acquisition shaft 5 is moved to the base end side at the time of maximum use. The length of the vibration suppressing portion is preferably 20 cm to 40 cm. As the vibration suppression unit, a vibration suppression reinforcement unit, a vibration absorption suppression unit, and the like can be considered. Preferably, it is a vibration suppression reinforcement part.
In the in-vivo diagnostic imaging probe 100 of this embodiment, as described above, the data acquisition shaft 5 encapsulates the proximal end portion of the hollow shaft 102 and has a distal end with a predetermined length from the proximal end side of the hollow shaft 102. An outer tube 42 that terminates on the side is provided. As shown in FIG. 13, when the data acquisition shaft 5 is moved to the maximum on the proximal end side (when the protrusion 34c and the engaging portion 42a are engaged), the portion where the outer tube 42 has existed until then. The outer tube 42 does not exist in the length portion of the data acquisition shaft 5 that has moved from the engaging portion 42a of the outer tube 42 in FIG. For this reason, a gap (clearance) between the inner surface of the sheath 3 and the outer surface of the data acquisition shaft 5 at that portion is widened, which may cause vibration. For this reason, when the outer tube 42 is provided as in the in-vivo diagnostic imaging probe 100 of this embodiment, it is preferable that vibration suppression is possible in a portion where the outer tube does not exist. For this reason, in the in-vivo diagnostic imaging probe 100 of this embodiment, as shown in FIG. 13, the vibration suppression unit 20 is twice the length of the above-described axially movable distance of the data acquisition shaft 5 or longer than that. It has a slightly long length, and enables vibration suppression at a portion that is a portion where the outer tube does not exist when the base shaft side of the data acquisition shaft 5 is moved.

If the length of the vibration suppressing portion is too long, the flexibility of the data acquisition shaft 5 is hindered, and therefore it is preferably 2.5 times or less the axially movable distance of the data acquisition shaft. . In particular, when the data acquisition shaft has an outer tube as described above, it is preferably 2.5 times or less the axially movable distance of the data acquisition shaft. In addition, when the data acquisition shaft does not have an outer tube, it is preferably 1.5 times or less the axially movable distance of the data acquisition shaft.
And it is preferable that the vibration suppression part 20 is formed of the damping layer provided in the hollow shaft 102. The damping layer is formed by a reinforcing tube, a filler, a vibration suppression material coating, or the like.
And it is preferable that the vibration suppression part 20 is formed of the damping layer provided in the hollow shaft 102. The damping layer is formed by a reinforcing tube, a filler, a vibration suppression material coating, or the like.
Specifically, the vibration suppression portion is formed by a curable filler filled in the hollow shaft, a vibration suppression material coating coated on the inner surface of the hollow shaft, a reinforcing tube inserted on the inner surface of the hollow shaft, and the like. The For these, the same ones as described above can be preferably used. Moreover, it is preferable that the reinforcement tube inserted in the hollow shaft inner surface is fixed to the inner surface of the hollow shaft.

The in-vivo diagnostic imaging probe 100 is used by being connected to an external drive device (not shown). The external driving device is connected to the connector of the in-vivo diagnostic imaging probe 100, a driving source for rotating the data acquisition shaft at a high speed, a transmitting device for supplying ultrasonic waves to the ultrasonic transducer, an ultrasonic transformer A device having an image display function for imaging using a signal received from a reducer is used.
When this in-vivo diagnostic imaging probe is used, the in-vivo diagnostic imaging probe 100 is inserted and installed in a target body cavity. When the proximal end portion of the in-vivo diagnostic imaging probe 100 is connected to an external drive device and the external drive device is driven, the drive torque is transmitted to the hollow shaft via the connector, and the data acquisition shaft rotates. Accordingly, the tip portion also rotates. When performing an axial scan with the in-vivo diagnostic imaging probe, the proximal end portion of the data acquisition shaft is gripped and moved to the proximal end side. Accordingly, the state shown in FIG. 11 is changed to the state shown in FIG. 13, the data acquisition shaft moves in the proximal direction, and is in a state where it is separated from the sheath by a predetermined distance. The sheath is not stored.
In the in-vivo diagnostic imaging probe 100, the portion serving as the sheath non-housing portion is the vibration suppressing portion 20 as described above. Therefore, even if the high-speed rotation is continued, the data acquisition shaft does not vibrate abnormally. Good scanning can be continued without causing any trouble.

FIG. 1 is a partially omitted external view of an in-vivo diagnostic imaging probe according to the present invention. FIG. 2 is an enlarged cross-sectional view of the distal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 3 is an enlarged cross-sectional view of the proximal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 4 is an explanatory diagram for explaining the operation of the in-vivo diagnostic imaging probe shown in FIG. FIG. 5 is a partially omitted external view of the data acquisition shaft of the optical cartel apparatus shown in FIG. 6 is an enlarged cross-sectional view of the proximal end portion of the data acquisition shaft shown in FIG. FIG. 7 is an enlarged cross-sectional view of the vicinity of the base end of the data acquisition shaft shown in FIG. FIG. 8 is an enlarged cross-sectional view of the vicinity of the proximal end of the data acquisition shaft used in the in-vivo diagnostic imaging probe of another embodiment of the present invention. FIG. 9 is an enlarged cross-sectional view of the vicinity of the proximal end of the data acquisition shaft used in the in-vivo diagnostic imaging probe of another embodiment of the present invention. FIG. 10 is an enlarged cross-sectional view of the vicinity of the proximal end of the data acquisition shaft used in the in-vivo diagnostic imaging probe of another embodiment of the present invention. FIG. 11 is a partially omitted external view of an embodiment in which the in-vivo diagnostic imaging probe of the present invention is applied to an ultrasonic in-vivo diagnostic imaging probe. 12 is an enlarged cross-sectional view of a proximal end portion of the in-vivo diagnostic imaging probe shown in FIG. FIG. 13 is an explanatory diagram for explaining the operation of the in-vivo diagnostic imaging probe shown in FIG. FIG. 14 is an enlarged cross-sectional view of the distal end portion of the in-vivo diagnostic imaging probe shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100 In-vivo diagnostic imaging probe 2, 5 Data acquisition shaft 3 Sheath 20 Vibration suppression part 21 Optical fiber 22 Drive transmission hollow shaft

Claims (20)

An in-vivo diagnostic imaging probe comprising a sheath to be inserted into a living body and a data acquisition shaft that is housed in the sheath and movable in the axial direction in the sheath,
The data acquisition shaft includes a drive transmission hollow shaft and a tip portion exposed from the distal end portion of the hollow shaft, and rotates by a rotational force applied at the proximal end portion,
The data acquisition shaft is axially moved in the sheath between a first position on the distal end side in the sheath and a second position on the proximal end side by a predetermined length from the first position. It is movable, and movement from the first position to the distal end side and from the second position to the proximal end side is limited. Further, the data acquisition shaft is disposed inside the hollow shaft. Provided with a vibration suppression unit that has a length equal to or longer than an axially movable distance of the data acquisition shaft and suppresses vibration during rotation of the data acquisition shaft. In vivo diagnostic imaging probe. The sheath includes a sheath hub provided at a proximal end portion of the sheath, the sheath hub includes a protruding portion protruding inward, and the data acquisition shaft includes the data acquisition shaft. The in-vivo diagnostic imaging probe according to claim 1, further comprising an engaging portion that engages with the protruding portion and restricts the second position when moving to the proximal end side. The in-vivo diagnostic imaging probe includes an outer tube that encloses a proximal end portion of the hollow shaft of the data acquisition shaft and terminates at a distal end side of a predetermined length from the proximal end side of the hollow shaft. The in-vivo diagnostic imaging probe according to claim 1, wherein the tube includes an intrusion portion into the sheath that is equal to or longer than the axially movable distance of the data acquisition shaft. The sheath includes a shaft lumen for housing the data acquisition shaft, a guide wire lumen that opens at a distal end of the sheath and extends to a proximal end side of a predetermined length, and a sheath hub provided at a proximal end portion of the sheath The in-vivo diagnostic imaging probe according to any one of claims 1 to 3. The in-vivo diagnostic imaging probe includes an outer tube that can enter the sheath from a proximal end portion of the sheath and has a length equal to or longer than the axially movable distance of the data acquisition shaft; An operation member having a tube hub provided at a proximal end of the tube, the hollow shaft of the data acquisition shaft passes through the outer tube of the operation member, and the data acquisition shaft is 5. The device according to claim 1, wherein the hollow shaft is encapsulated in the outer tube and is not exposed when moving in a predetermined long axis direction together with the operation member during use. In vivo diagnostic imaging probe. The in-vivo diagnostic imaging probe according to claim 5, wherein the sheath hub includes a seal member that can slide the outer tube in a substantially liquid-tight state. The in-vivo image according to any one of claims 1 to 6, wherein the vibration suppression unit has a length that is twice or a little longer than the axially movable distance of the data acquisition shaft. Diagnostic probe. The in-vivo diagnostic imaging probe according to any one of claims 1 to 7, wherein the vibration suppressing unit is formed by a vibration control layer provided in the hollow shaft. The in-vivo diagnostic imaging probe according to any one of claims 1 to 7, wherein the vibration suppressing portion is formed by a reinforcing tube that reinforces the hollow shaft in the hollow shaft. The in-vivo diagnostic imaging probe according to any one of claims 1 to 7, wherein the vibration suppression unit is formed of a filler filled in the hollow shaft. The in-vivo diagnostic imaging probe according to any one of claims 1 to 10, wherein a length of the vibration suppressing unit is 20 to 40 cm. The data acquisition shaft includes the drive transmission hollow shaft, an optical fiber penetrating through the hollow shaft and having the tip portion at the tip, and a connector connectable to a connection portion of an external drive device. The in-vivo diagnostic imaging probe according to any one of claims 1 to 11, wherein the probe is rotated by a rotational force applied by the connector. The in vivo living body according to claim 12, wherein the vibration suppression unit is formed by a reinforcing tube that encapsulates the optical fiber, and the reinforcing tube is fixed to an outer surface of the optical fiber or an inner surface of the hollow shaft. Diagnostic imaging probe. The optical fiber includes a high-strength portion having a length equal to or longer than the axially movable distance of the data acquisition shaft from the base end side, and the vibration suppressing portion is formed by the high-strength portion. The in-vivo diagnostic imaging probe according to claim 12. The in-vivo diagnostic imaging probe according to claim 12, wherein the vibration suppression unit is formed of a curable filler filled between the optical fiber and the hollow shaft. The in-vivo diagnostic imaging probe according to claim 12, wherein the optical fiber includes a vibration suppressing material covering portion, and the vibration suppressing portion is formed by the vibration suppressing material covering portion. The data acquisition shaft includes a connector fixed to a base end portion of the optical fiber, and a connection member that connects the base end portion of the hollow shaft and the connector, and the data acquisition shaft includes the connector. The in-vivo diagnostic imaging probe according to any one of claims 12 to 16, wherein the in-vivo diagnostic imaging probe is rotated by a rotational force applied in step (a). The data acquisition shaft includes the drive transmission hollow shaft, a cylindrical housing fixed to the tip of the hollow shaft, an ultrasonic transducer constituting the tip portion housed in the housing, and an external drive device The in-vivo diagnostic imaging probe according to any one of claims 1 to 11, wherein the in-vivo diagnostic imaging probe is provided with a connector that can be connected to the connector and rotated by a rotational force applied by the connector. The in-vivo diagnostic imaging probe according to claim 18, wherein the vibration suppression unit is formed by a reinforcing tube inserted into the hollow shaft and fixed to the inner surface of the hollow shaft. The in-vivo diagnostic imaging probe according to claim 18, wherein the vibration suppression unit includes a vibration suppression material covering portion on an inner surface of the hollow shaft, and the vibration suppression portion is formed by the vibration suppression material coating portion.

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