JPH06254096A - Intra-celom ultrasonic probe - Google Patents

Abstract

PURPOSE:To prevent the damage to an ultrasonic transmission and reception surface by a tracheal check valve even if the intra-celom ultrasonic probe is inadvertently removed from the tracheal. CONSTITUTION:A front end probe part 5 on the side having the ultrasonic transmission and reception surface 7 of the ultrasonic probe 1 is provided with a projecting part 24 projecting to the side outer than the outer peripheral surface of an insertion part 3 and at least a front end probe part 5 on the side not having the transmission and reception surface 7 is provided with a groove part 25 continuous smoothly with the outer periphery of the insertion part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intracavity ultrasonic probe for ultrasonically diagnosing the inside of a body cavity by inserting it into a body cavity through an insertion aid such as a trocar.

[0002]

2. Description of the Related Art An ultrasonic probe for intracorporeal cavity is constructed by inserting an inner needle through an insertion aid such as a trocar and making a hole of about 10 mm in the abdominal wall, and then removing the inner needle. A device for ultrasonically diagnosing organs such as the liver, pancreas, gallbladder, and bile duct in the abdominal cavity by inserting it into the abdominal cavity via an insertion aid instead of displaying a tomographic image of these organs on a monitor. belongs to. If this ultrasonic probe in the body cavity is used, the ultrasonic wave transmitting / receiving surface can be brought into close contact with the surface of the organ directly without laparotomy, and the subject can be invaded with a high resolution and an excellent image can be obtained.

By the way, as an insertion assisting tool such as a trocar, which is a guide for inserting the intracorporeal ultrasonic probe into the coelomic cavity, for example, the abdominal cavity, the intracorporeal ultrasonic probe, the inner needle and the like are removed. After that, a check valve is provided to prevent the incombustible gas accumulated in the abdominal cavity from expanding through the insertion assisting tool from leaking to the outside.

The check valve is a rotary lid type valve which is disposed in the inner cavity of the insertion assisting tool and is rotated to open and close the inner cavity so as to be constantly urged in a direction to close the inner cavity. While sliding across the cavity, it has an opening and opens by aligning this opening with the lumen, and it is closed by shifting the opening relative to the lumen, and is always biased in the closing direction. There are things. And
The valve body end of the check valve is hard, and the urging force in the closing direction is set strong. On the other hand, the ultrasonic wave transmitting / receiving surface of the ultrasonic probe in the body cavity is formed of a soft member such as plastic. Therefore, when the ultrasonic wave transmitting / receiving surface of the ultrasonic probe in the body cavity is inserted / removed in a state of being in contact with the valve body, the ultrasonic wave transmitting / receiving surface may be easily damaged.

Further, the ultrasonic probe in the body cavity is, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-92508, a type in which the ultrasonic wave transmitting / receiving surface and the outer peripheral surface of the probe are flush with each other. As disclosed in Japanese Patent Laid-Open No. 60-92508, a type in which the outer diameter of a tip portion having an ultrasonic wave transmitting / receiving surface is made larger than the outer diameter of a subsequent insertion portion, and JP-A-57-52443 and U.S. Pat. As disclosed in Japanese Patent No. 456146, there is a type in which the ultrasonic wave transmitting / receiving surface is concave with respect to the outer peripheral surface of the probe.

[0006]

Among the conventional ultrasonic probes in the body cavity, the ultrasonic wave transmitting / receiving surface is concave and, in the case of the one type, the ultrasonic wave transmitting / receiving surface is used to remove the probe from the insertion aid. If it is performed in a state of being in contact with the end portion of the check valve, the ultrasonic wave transmitting / receiving surface made of a soft member such as silicon rubber, natural rubber or polyethylene resin may be damaged.
In addition, in the type where the outer diameter of the tip having the ultrasonic wave transmitting / receiving surface is made larger than the outer diameter of the insertion part that follows, even if the ultrasonic probe is inadvertently pulled out, the disconnection between the tip part and the insertion part will occur first. Since the portion is caught by the check valve, the ultrasonic wave transmitting / receiving surface can be prevented from being damaged by opening the check valve at this time. However, it is necessary to manually open the check valve every time the breakage of the tip portion is caught, and this operation is complicated.

The present invention has been made in view of these circumstances, and ultrasonic waves can be generated without complicated operations such as manually opening the check valve when removing the check valve from the insertion assisting tool. It is an object of the present invention to provide an intracorporeal ultrasonic probe capable of preventing damage to the transmitting / receiving surface.

[0008]

In order to achieve the above object, an ultrasonic probe in a body cavity according to the present invention has an insertion portion and an ultrasonic transmission / reception surface provided on a part of the outer peripheral surface in a continuous manner with the insertion portion. A tip probe part, which is used in combination with an insertion aid having a check valve, wherein the tip probe part having the ultrasonic wave transmitting / receiving surface is inserted at least on the insertion part side of the wave transmitting / receiving surface. At least a part of the tip probe section on the side without the wave transmitting / receiving surface and the outer circumference of the insertion section are made to be smoothly continuous with each other while protruding outside the outer circumference of the section.

[0009]

With this configuration, after the examination in the body cavity, for example, in the abdominal cavity,
Even if the ultrasonic probe in the body cavity is inadvertently pulled out from the insertion assisting tool that guides the insertion into the abdominal cavity, when the ultrasonic wave transmitting / receiving surface side faces the biasing closed side of the check valve, The protruding portion is caught and stopped, and the ultrasonic wave transmitting / receiving surface side is not pulled out in the state of being in contact with the check valve. Then, in this state, the ultrasonic probe is rotated about the axial direction to retract the protruding portion from the biasing closed side of the check valve, and the smooth continuous portion with the insertion portion is connected to the check valve. By positioning the ultrasonic probe on the urging and closing side, the ultrasonic probe can be smoothly removed from the insertion assisting tool without damaging the wave transmitting / receiving surface even if the check valve is not opened.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 relate to a first embodiment of the present invention. FIG. 1 is a schematic explanatory view of an intracorporeal ultrasonic probe and an intracorporeal ultrasonic diagnostic apparatus using the probe according to the first embodiment, and FIG. 3 is a front view of the tip probe, FIG. 4 is a sectional view of the tip probe, FIG. 5 is a sectional view showing a curved portion of the ultrasonic probe, FIG. FIG. 7 is an explanatory view showing a state where the ultrasonic probe is in contact with the organ.

In FIG. 1, reference numeral 1 is an ultrasonic probe in a body cavity, and a hard insertion portion 3 is extended in front of a grip portion 2 on the proximal side, and the insertion portion 3 has a curved portion 4 at the tip of an insertion tube 3a. The tip probe section 5 is continuously provided via the. The bending portion 4 bends up and down, left and right via a wire described below by operating a bending operation knob 6 arranged on the grip portion 2, and directs the tip probe portion 5 in a predetermined direction. An ultrasonic wave transmitting / receiving surface 7 provided along the longitudinal direction on the outer peripheral surface of the touching portion 5 can be brought into contact with a predetermined site of the abdominal organ. As shown in FIG. 4, the tip probe 5 has an ultrasonic probe 8 internally provided therein, and the probe 8 has a large number of coaxial cables inserted through the gripping portion 2, the insertion portion 3 and the bending portion 4. A signal cable bundle 9 consisting of is electrically connected. The ultrasonic probe 8 is an electronic device in which a plurality of acoustic lenses, which are the ultrasonic wave transmitting / receiving surface 7, made of a soft rubber such as silicon rubber, an acoustic matching layer 10, and a plurality of strip-shaped elongated transducer pieces are arranged vertically in parallel with respect to an insertion portion. It is composed of a linear ultrasonic transducer 11 and a backing 12. The grip portion 2 has a cable flexible tube 13 extending from the base end thereof,
An electric connector 14 is provided at an end of the cable flexible tube 13 and is connected to an ultrasonic diagnostic apparatus 16 via a connector 15. This ultrasonic diagnostic apparatus 16 has a monitor 17 and displays an ultrasonic tomographic image of the abdominal organ obtained by the ultrasonic probe 8.

The ultrasonic probe 1 in the body cavity is inserted into the abdominal cavity where the non-combustible gas is fed between the organ and the epidermis (abdominal wall) T via a trocar 18 as an insertion aid. It is supposed to be done. The trocar 18 is
A mantle tube 20 is extended forward from the grip portion 19 on the hand side, and a valve body 21 that is opened and closed by cutting a thin-film rubber into the mouth opening 20 of the grip portion 19 is provided. The check valve 2 for opening and closing the opening 20 is provided in the portion 19.
2 are provided. The check valve 22 is constantly urged by a spring 23 so as to close the opening 20, and is also made of a relatively hard material.

As shown in FIGS. 1 and 2, the tip probe 5 of the ultrasonic probe 1 in the body cavity is located outside the outer peripheral surface of the insertion portion 3 on the side where the ultrasonic wave transmitting / receiving surface 7 is provided and in the vicinity thereof. Is formed as a protruding portion 24, and the opposite side to the wave transmitting / receiving surface 7 is a groove 25 that is continuous with the outer peripheral surface of the insertion portion 3, and the groove portion 25 extends from the base end of the tip probe 5 to the tip. It is formed in the axial direction. Further, the protruding portion 24 of the tip probe 5 has a base end on the side of the wave transmitting / receiving surface 7 as an abutting portion 26, and the protruding end surface extending from the abutting portion 26 to the edge of the groove 25 is smoothly continuous. Is forming. In the illustrated embodiment, the protrusion 24 is formed directly on the tip probe 5, but the protrusion may be formed by a cover method and attached to the tip probe.

The bending portion 4 connects a first bending tube 27a and a second bending tube 27b, which have a plurality of bending pieces 27 ... Pivotally connected, and connect these bending tubes 27a and 27b to a blade and a bending rubber. It is configured to be covered with 28. The bending portion 4 bends left and right in the front direction with the wave transmitting / receiving surface 7 positioned on the lower side in the bending direction of the tip probe 5.
The second bending pipe 27a is positioned so that the bending pipe 27a bends up and down on the rear side.
The bending tube 27b is positioned and the two are connected by a four-way bending piece 29 that bends vertically and horizontally.

The front end of the first bending tube 27a and the rear end of the second bending tube 27b are connected to the tip probe 5 and the insertion tube 3a by a fixing means such as a screw or a pin. . Further, near the tip of the first bending tube 27a, the tips of two wires 30 that bend the first bending tube 27a in the left and right directions by pulling and relaxing are fixed.
0 is guided by the wire receiver 31, is inserted through the insertion portion 3, and is wound around the pulley of the bending operation knob 6 of the grip portion 2. On the other hand, similarly, in the vicinity of the tip of the second bending tube 27b,
The tips of the two wires 32 that are bent upward and downward are fixed and wound around the pulley of the bending operation knob 6 of the grip portion 2. Therefore, the bending portion 4 includes a left-right bending portion 4a that bends in the left-right direction and a vertical bending portion 4 that bends in the up-down direction.
b), and both of the bending portions can operate independently.

With this structure, after inserting the ultrasonic probe 1 into the abdominal cavity through the trocar 18, the ultrasonic probe 1 sends and receives ultrasonic waves to the surface of the abdominal organ S such as the liver as shown in FIG. It is necessary to bend the bending portion 4 to the left and right while closely contacting the wave surface 7 and inspect the entire surface of the organ S. By the way, an ultrasonic probe provided with a bending portion in which four-direction bending pieces that bend in four directions of up, down, left and right are continuously provided, and Japanese Patent Publication No. 4-67.
As described in Japanese Patent No. 25, in an ultrasonic probe having a bending portion in which a two-way bending piece is continuously provided on the tip side and a four-way bending piece is continuously provided on the proximal side, first, the bending is performed in an upward direction. When it is bent to the left and right in the state of being applied to the body, the tip probe 5 is warped up as shown by the chain double-dashed lines in FIGS. Therefore, it is necessary to adjust the upward bending at the same time, which is a troublesome operation. However, in the configuration of the bending portion 4 of the above-described embodiment, as shown by the solid line in FIGS. 7A and 7B, the tip probe portion 5 does not warp in the operating state (therefore, bending in the upward direction). This probe 5 bends left and right in a state of being in close contact with the organ (without adjusting operation).

After the inspection is completed, the bending portion 4 is made straight and the ultrasonic probe 1 is pulled out from the trocar 18, but the check valve 2 is located on the ultrasonic transmitting / receiving surface 7 side of the tip probe portion 5.
When facing the closing direction of No. 2, it abuts against the abutting portion 26 at the base end of the tip probe portion 5 and stops. Therefore, in this contact state, the insertion portion 3 follows the taper at the base end of the probe portion 5. When is rotated, the groove portion 25 that is continuous with the outer peripheral surface of the insertion portion 3 faces in the closing direction of the check valve 22, and the ultrasonic probe 1 is removed from the trocar 18 in this state.

Therefore, in the ultrasonic probe 1 of this embodiment, even if the ultrasonic wave transmitting / receiving surface 7 is accidentally removed from the trocar 18, the check valve 22 does not damage the ultrasonic wave transmitting / receiving surface 7, and the base end of the tip probe portion 5 is not damaged. It can be safely withdrawn simply by turning the insertion part 3 along the taper. Further, the ultrasonic wave transmitting / receiving surface 7 can be reliably brought into close contact with the organ surface simply by bending the bending portion 4 to the left or right while the bending portion 4 is bent upward.

8 and 9 relate to the second embodiment of the present invention. FIG. 8A is a side view of the essential part showing an ultrasonic probe of the second embodiment, and FIG. 8B is a section A- of FIG. A line sectional view, FIG.
(A) is sectional drawing which shows an example trocar, (b) is explanatory drawing which shows the state which removes the ultrasonic probe inserted in the trocar of (a).

The ultrasonic probe 1 of the second embodiment is provided with the tip probe portions 5 on the tip side and the hand side of the ultrasonic wave transmitting / receiving surface 7.
Protrusions 33a, 33b protruding like a protector are provided,
The outer circumference of the tip probe portion 5 of the other portion is flush with the curved portion 4 and the insertion portion 3. The other structure of this embodiment is the same as that of the first embodiment.

The trocar 34 shown in FIG. 9 is of a slide piston type unlike the type shown in the first embodiment. The trocar 34 has a grip portion 1 on the near side.
Cylinder 19a is provided in the lower part of
And has a piston-like communication hole 2 in this cylinder 19a.
A check valve 22 having 2a is slidably arranged. In the check valve 22, the communication hole 22a has a cylinder 19a.
It is opened by communicating with the opening 19b, and is normally biased by the spring 23 in the closing direction.
The check valve 22 has an operating portion 22b protruding outside the cylinder 19a. By pushing in the operating portion 22b, the check valve 22 is slid against the biasing force of the spring 23 to open the communication hole 22a and the cylinder opening. It can be opened by matching with 19b. The check valve 22 is generally
The edge portion of the communication hole 22a has an edge-like end portion.

When inserting the ultrasonic probe 1 into the trocar 34 of this type, the operating portion 22b of the check valve 22 is pushed against the spring 23 and the check valve 22 is slid to form the communication hole 22a. Align with the cylinder opening 19b. In this state, the ultrasonic probe 1 is attached to the trocar 34.
If the ultrasonic wave transmitting / receiving surface 7 is inserted into the check valve 22
Even when they are facing each other in the sliding direction and the pushing force is weak, first, the projecting portion 3 at the front of the wave transmitting / receiving surface 7 is first.
Since 3a abuts on the edge of the communication hole 22a, at this time the insertion portion 3 is rotated to retract the wave transmitting / receiving surface 7 from the sliding direction of the check valve 22, and the wave transmitting / receiving surface 7 can be prevented from being damaged by inserting in this state. Even when the ultrasonic probe 1 inserted in the trocar 34 is removed, the operating portion 22b of the check valve 22 is pushed in and the check valve 22 is slid to align the communication hole 22a with the cylinder opening 19b. In this state, the ultrasonic probe 1 is pulled out. Even if the ultrasonic wave transmitting / receiving surface 7 faces the sliding direction of the check valve 22 and the pushing force is weak, first, the protrusion 33b at the rear of the wave transmitting / receiving surface 7 is Since it hits the edge of the communication hole 22a, the ultrasonic wave transmitting / receiving surface 7 can be prevented from being damaged by rotating the insertion portion 3 at this time to retract the wave transmitting / receiving surface 7 from the sliding direction of the check valve 22 and then withdrawing it.

FIG. 10 relates to a third embodiment of the present invention,
(A) is a side view of the main part of the ultrasonic probe, (b) is (a)
FIG. 6 is a sectional view taken along line BB of FIG. In the ultrasonic probe 1 of this embodiment, the tip probe 5 is directly connected to the insertion portion 3 without a curved portion. Further, the diameter of the insertion portion 3 is made smaller than the diameter of the tip probe portion 5, and the tip probe portion 5 and the insertion portion 3 are eccentrically connected to each other. And this tip probe 5
The outer circumference of the ultrasonic wave transmission / reception surface 7 on the back side smoothly continues to the outer circumference of the insertion portion 3. In the illustrated example, they are formed in a uniform pattern. Further, the base end of the tip probe 5 on the ultrasonic wave transmitting / receiving surface 7 side projects outwardly with respect to the outer periphery of the shaft insertion portion 3 to form an abutting portion 26. Other configurations, operations and effects of this ultrasonic probe 1 are the same as those of the first embodiment.

FIG. 11 relates to a fourth embodiment of the present invention,
(A) is a side view of a main part of the ultrasonic probe, and (b) is a sectional view taken along the line CC of (a). In this embodiment, electronic selectors or convex type ultrasonic probes 36 and 37 having different scanning directions are provided in the circumferential direction of the tip probe unit 5, and the tip probes on the proximal side of these probes 36 and 37 are provided. The touching part 5 is provided with projecting parts 38, 38 serving as abutting parts. Other configurations, operations, and effects are the same as those in the first embodiment.

FIG. 12 is a sectional view of the essential parts of an ultrasonic probe according to the fifth embodiment of the present invention. In this embodiment, a single-plate ultrasonic transducer 39 is arranged near the tip in the tip probe 5 toward the operator's side and the motor M is made to face the transducer 39.
It is used in a type in which a rotary mirror 41 connected to the above is used to scan in a fan shape in a direction perpendicular to the axial direction of the insertion portion 3. The ultrasonic wave transmitting / receiving surface 7 of the tip probe 5 is open, and the tip of the tip probe 5 including the wave transmitting / receiving surface 7 is a cover made of thin plastic such as polyethylene having a wall thickness of about 0.2 mm. It is covered with 42. The cover 42 has good ultrasonic permeability, but is soft, and since the tip probe portion 5 of the wave transmitting / receiving surface 7 is open, it may be damaged if the end portion of the check valve 22 hits. Therefore, a protruding portion 43 is provided on the tip end probe portion 5 on the proximal side of the wave transmitting / receiving surface 7, and the outer peripheral surface of the tip end probe portion 5 on the back side of the wave transmitting / receiving surface 7 is formed so as to be flush with the outer periphery of the insertion portion 3. , Both are smoothly connected. The tip probe 5 is filled with the ultrasonic transmission medium liquid 44. In this configuration, the tip probe 5
Since there is the shell of the tip probe 5 on the lower surface of the cover 42 other than the wave transmitting / receiving surface 7, even if the end of the check valve 22 hits the cover 42, the cover 42 is not damaged. In the illustrated example, the mirror is directly rotated by a motor, but the motor may be provided in the grip portion on the hand side and the rotation transmission means may be inserted into the insertion portion to transmit the rotation to the mirror.

FIG. 13 is a perspective view of an essential part of an ultrasonic probe showing a sixth embodiment of the present invention. In this embodiment, a balloon 44 that expands by sending a liquid onto the ultrasonic wave transmitting / receiving surface 7 of the tip probe 5 and contracts by discharging the liquid is provided, and in order to protect the balloon 44, The distal end probe 5 on the proximal side of the balloon 44 is provided with a protrusion 45 as an abutting portion. With this configuration, it is possible to prevent the thin rubber balloon 44 from being caught by the end portion of the check valve and being damaged.

It is also possible to use an entire circumference balloon as the balloon and to cover the wave transmitting / receiving surface with a hard cover on the back side.

FIG. 14 is a partially cutaway rear view of an ultrasonic probe showing a seventh embodiment of the present invention. In this embodiment, unlike the first embodiment, the protrusion 24 of the tip probe 5 is not formed until it reaches the tip, but the vicinity of the tip has the same diameter as the groove 25 and the abutment portion 26 is formed on the tip side. However, the end face of the protruding portion extending from the abutting portion 26 to the edge of the groove 25 is formed in a smoothly continuous taper shape. Further, the proximal-side grip portion 46 of the insertion portion 3 is configured so that the insertion portion 3 can be oscillated and rotated leftward and can be returned to the original state, and the stopper pin 47 is engaged with the groove 48 of the insertion portion 3. And return spring 49
Are mounted on the gripping portion 46 side and the insertion portion 3 side. Reference numeral 50 is a watertight seal.

With this construction, the abutting portions 26, 26 provided in front of and behind the ultrasonic wave transmitting / receiving surface 7 of the ultrasonic probe 1 hit the check valve not only when the needle is removed from the trocar 18 but also when it is inserted, and then inserted and removed. Then, the insertion portion 3 naturally rotates along the tapered end surface of the protruding portion 24 and can be inserted / removed when the check valve reaches the position of the groove portion 25. When the insertion / removal is finished, the insertion portion is urged by the spring 49. 3 returns to the original position by turning.

The watertightness is ensured by the seal 50 even when the insertion portion swings and rotates. According to this embodiment, since it is not necessary to rotate the probe 1 together with the grip portion, the insertion / removal operation becomes easier.

15 to 17 are sectional views showing an auxiliary tool used for a trocar.

The trocar assisting tool 71 shown in FIG. 15 is detachably mounted laterally between the upper end of the trocar 18 and the grip portion 2 of the ultrasonic probe 1 to hold the probe 1. is there. This auxiliary tool 71 is made of rubber,
It is formed of styrofoam, foamed urethane, or the like, and has a C-ring shape having a notch groove 72 in the length direction. Generally, in the ultrasonic probe 1, the grip portion 2 and the bending operation knob 6 are heavy, and when the operator does not always hold the grip portion 2 when the probe 1 is inserted into the trocar 18, the probe 1 is further lowered by its own weight. May be inserted into. Therefore, while the probe 1 is being inserted into the trocar 18, it is difficult for the operator to perform work such as taking other instruments. Therefore, when the operator wants to release his / her hand from the probe 1, the auxiliary tool 71 is attached to the upper end of the trocar 18 and the grip portion 2.
The probe 1 can be held by mounting it between
The probe 1 is not inserted by its own weight.

A trocar assisting tool 73 shown in FIG. 16 has an insertion depth adjusting mechanism, and includes a taper tube 74 and a fastening ring 7.
6, operation cover 77 with tip slot, watertight ring 78
It consists of According to this auxiliary tool 73, the insertion depth of the insertion portion 3 of the probe 1 can be fixed in a freely set state.

A signal cable 79 is provided in the operation cover 77 in a meandering or turning manner so as to have a retaining portion. Even if the depth of the insertion portion is adjusted, the signal cable 79 can be pulled or pulled. No compressive force is applied.

The auxiliary tool 80 shown in FIG. 17 is a trocar 1
8. A stopper interposed between the upper end of 8 and the probe gripping portion is separated into a main body 81 and a movable body 82, and both are screwed together so that the stopper height can be adjusted.

[0036]

As described above, according to the present invention, when the ultrasonic probe is pulled out from the insertion aid having the check valve, the check valve is not required to be manually opened and the operation is complicated. This has an effect of preventing damage to the ultrasonic wave transmitting / receiving surface.

[Brief description of drawings]

1 to 7 relate to a first embodiment of the present invention,
FIG. 1 is a schematic view of an intracorporeal ultrasonic probe according to the first embodiment and an intracorporeal ultrasonic diagnostic apparatus using the probe,

FIG. 2 is a rear view of the tip probe of the ultrasonic probe,

FIG. 3 is a front view of the tip probe,

FIG. 4 is a cross-sectional view of the tip probe,

FIG. 5 is a cross-sectional view showing a curved portion of the ultrasonic probe,

FIG. 6 is an explanatory view showing a state where the ultrasonic probe is in contact with an organ,

FIG. 7 is an explanatory view showing a state in which the ultrasonic probe is in contact with an organ,

8 and 9 relate to a second embodiment of the present invention, FIG. 8 (a) is a side view of essential parts showing an ultrasonic probe of the second embodiment, and FIG. 8 (b) is A of (a). -A line sectional view,

FIG. 9A is a sectional view showing an example of a trocar;
(B) is an explanatory view showing a state in which the ultrasonic probe inserted in the trocar of (a) is removed.

FIG. 10 relates to a third embodiment of the present invention, (a) is a side view of a main part of an ultrasonic probe, (b) is a sectional view taken along line BB of (a),

FIG. 11 relates to a fourth embodiment of the present invention, (a) is a side view of a main part showing an ultrasonic probe, (b) is a sectional view taken along line CC of (a),

FIG. 12 is a sectional view of an essential part of an ultrasonic probe according to a fifth embodiment of the present invention,

FIG. 13 is a perspective view of an essential part of an ultrasonic probe showing a sixth embodiment of the present invention,

FIG. 14 is a partially cutaway rear view of the ultrasonic probe according to the seventh embodiment of the present invention.

15 to 17 show an auxiliary tool used for a trocar, and FIG. 15 (a) is a sectional view of an example,
(B) is a perspective view,

FIG. 16 is a cross-sectional view showing another example of the auxiliary tool,

FIG. 17 is a cross-sectional view showing still another example of the auxiliary tool,

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Intracorporeal ultrasonic probe 2 ... Gripping part 3 ... Inserting part 5 ... Tip probe part 7 ... Ultrasonic wave transmitting / receiving surface 8 ... Ultrasonic probe 24 ... Projection part 25 ... Groove part 26 ... Butting part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 20, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

[0011] In FIG. 1, reference numeral 1 denotes a celiac ultrasonic probe, to extend the interpolation part 3 in front of the grip portion 2 of the proximal side,
The insertion portion 3 has a tip probe portion 5 connected to the tip of the insertion tube 3a via a curved portion 4. The curved portion 4 is a gripping portion 2.
By operating the bending operation knob 6 disposed in the above, the bending movement is performed up and down, right and left via a wire described later, and the tip probe 5 is directed in a predetermined direction. The ultrasonic wave transmitting / receiving surface 7 provided along the above can be brought into contact with a predetermined portion of the abdominal organ. The tip probe 5 is
As shown in FIG. 4, an ultrasonic probe 8 is provided internally, and the probe 8
A signal cable bundle 9 composed of a large number of coaxial cables inserted through the grip portion 2 and the insertion portion 3 is electrically connected to the.
The ultrasonic probe 8 includes an acoustic lens made of soft rubber such as silicon rubber, which is the ultrasonic wave transmitting / receiving surface 7, an acoustic matching layer 10,
Electronic linear type ultrasonic transducer 11 in which a plurality of strip-shaped elongated transducer pieces are arranged in parallel vertically to the insertion portion, backing 1
It consists of two. The grip portion 2 has a cable flexible tube 13 extending from the base end thereof.
An electric connector 14 is provided at the end of the connector and is connected to the ultrasonic diagnostic apparatus 16 via the connector 15. This ultrasonic diagnostic apparatus 16 has a monitor 17 and displays an ultrasonic tomographic image of the abdominal organ obtained by the ultrasonic probe 8.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

The ultrasonic probe 1 in the body cavity is inserted into the abdominal cavity where the non-combustible gas is fed between the organ and the epidermis (abdominal wall) T via a trocar 18 as an insertion aid. It is supposed to be done. The trocar 18 is
A mantle tube 20 is extended forward from the grip portion 19 on the hand side, and a valve body 21 which is opened and closed by cutting a thin film rubber into a mouth opening 20a of the grip portion 19 is provided.
A check valve 22 which opens and closes the opening 20 a is disposed further inside the grip portion 19. The check valve 22 with being biased to close the normally open 20 a by a spring 23, is formed by a relatively hard material.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

FIG. 13 is a perspective view of an essential part of an ultrasonic probe showing a sixth embodiment of the present invention. This embodiment is expanded by feeding on the ultrasonic transmitting and receiving surface 7 of the distal probe unit 5, the balloon 44 to contract arranged by draining, to the balloon 44 to protect, this Balloon 4
4 is provided with a protruding portion 45 as an abutting portion on the tip end probe portion 5 on the proximal side. With this configuration, it is possible to prevent the thin rubber balloon 44 from being caught by the end portion of the check valve and being damaged.

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Claims] 1. An insertion part, and a tip probe part which is connected to the insertion part and has an ultrasonic wave transmitting / receiving surface provided on a part of an outer peripheral surface thereof.
In the case of being used in combination with an insertion assisting tool with a check valve, the tip probe on the side having the ultrasonic wave transmitting / receiving surface, and at least the insertion section side of the wave transmitting / receiving surface projects outside the outer periphery of the insertion section. At the same time, at least a part of the tip probe portion on the side without the wave transmitting / receiving surface and the outer periphery of the insertion portion are smoothly continuous with each other, and the ultrasonic probe in a body cavity is characterized.