JPH0127763Y2 - - Google Patents

Description

[Detailed description of the invention] This invention incorporates an optical viewing tube into the ultrasound probe body, allowing the head of the ultrasound probe, which has a window for transmitting and receiving ultrasound signals, to be visually checked while contacting organs and diagnosing them. The present invention relates to an intrabody cavity ultrasonic diagnostic apparatus as described above.

As an intrabody cavity ultrasound diagnostic device that combines an optical viewing tube for observing the inside of a body cavity and an ultrasound probe for obtaining ultrasound signal images, those shown in FIGS. 1 and 2 have been proposed. . In these figures, reference numeral 1 denotes an ultrasonic probe head, which has an ultrasonic signal transmission/reception window 2 formed on its side, and a small-diameter shaft 4 connected to its rear via a curved portion 3. A cord for transmitting and receiving ultrasonic signals, a wire for driving a mirror in the ultrasonic probe head 1, etc. (not shown) are built inside. This shaft body 4 includes an optical viewing tube 5
It passes through the channel of the insertion section 6 in which is disposed, and its rear end is connected to the drive section 9 via the optical viewing tube proximal section 7 and the channel insertion port 8. A light guide cable 1 is attached to the optical viewing tube proximal portion 7.
0 and an eyepiece section 11 that is inclined with respect to the axial direction of the insertion section 6 are connected. Further, the drive section 9 has a grip handle 12 connected to its lower side, through which a signal cable 13 is inserted, and a drive motor 14 connected to its rear.

In the above-mentioned ultrasound diagnostic apparatus, in order to obtain an ultrasound image, the insertion section 6 and the ultrasound probe head 1 are inserted into a body cavity, and a predetermined organ is captured within the field of view of the optical tube 5 in the insertion section 6. Ultrasonic probe head 1 at 15
The window 2 of the ultrasound probe head 1 is brought into contact with the organ 15 by bending the curved portion 3 as shown in FIG.

However, in the conventional apparatus described above, the ultrasound probe head 1 and the curved part 3 are located in front of the tip of the optical viewing tube 5.
Because the insertion part protrudes relatively long, the observation field of the optical viewing tube 5 is obstructed when inserting it into a body cavity or when bringing the ultrasound probe head 1 into close contact with an organ 15. 6 must be pushed down to bend the curved portion 3 and come into contact with it, which poses a problem in that it is difficult to operate and requires advanced skill.

This idea was made in consideration of the above-mentioned problems and the fact that insertion into the abdominal cavity is medically determined to be at a predetermined site based on the position of the abdominal wall with few blood vessels and the position of organs. This is an intrabody cavity ultrasound diagnostic device in which an ultrasound transmitting/receiving window, a curved part, and an optical viewing tube are arranged in order from the front. By setting the curved direction of the curved portion to the right when viewed from the grasping direction of the hand body, it is possible to guide the observation of the window for transmitting and receiving ultrasonic waves to the abdominal organs, and to prevent the abdominal cavity from contacting the organs with the window. An intrabody cavity ultrasound diagnostic device that is suitable for operation and observation inside the body cavity, and that can be brought into close contact with a predetermined part of an organ while visually viewing both the ultrasound transmitting/receiving window and the organ by bending the curved portion. The purpose is to provide

This invention will be specifically explained below with reference to the drawings. 3 to 12 show an embodiment of this invention. In these figures, reference numeral 21 denotes an insertion section, and an ultrasound probe head 23 having an ultrasound transmission/reception window section 22 from the front to the side, and a curved section 24 are connected to the tip of the insertion section 21 in order from the front to the side. These insertion section 21, ultrasound probe head 2
3. The curved portions 24 are configured to have approximately the same diameter.
A cutout window 25 cut out in the visual field direction is formed on the outer periphery of the insertion portion 21 behind the curved portion 24, and an endoscope guide tube 26 is disposed from the cutout window 25 to the rear end of the insertion portion 21. A perspective-viewing endoscope 27 of the same diameter is inserted and removably inserted. In the illustrated device for diagnosing internal organs in the abdominal cavity, the notch window 25 formed in the insertion portion 21 is located on the right side when viewed from the proximal side of the insertion portion 21 in a normal grasping state. The distal end of the oblique endoscope 27 is located at 25, so that the diagonally right front is within the field of view of the endoscope. The oblique view type endoscope 27 has a viewing direction of approximately
45 degrees or higher is used. Further, the angle of inclination of the viewing direction of the cutout window 25 formed in the insertion section 21 is formed in the range of 5 degrees to 25 degrees so that the field of view of the endoscope 27 is not obstructed by the outer periphery of the insertion section 21. has been done.

A hand portion main body 28 is connected to the rear end of the insertion portion 21, and a grasping grip 29 that is inclined approximately 60 degrees forward with respect to the axial direction is integrally attached to the upper outer periphery of the hand portion main body 28 in normal use. connected and configured to be grasped with one hand. This prevents the grip 29 from coming into contact with the body wall and getting in the way even if the insertion section 21 is tilted significantly, especially when the insertion section 21 is inserted into a body cavity to diagnose deep organs. The head of the grip 29 has a substantially spherical bending operation part 30, and a bending operation lever 31 is protruded from the bending operation part 30 so that the grip 29 can be operated with the thumb of the hand holding the grip 29. It's getting old.

Drive device 32 with built-in ultrasonic scanning motor
is configured separately from the grip 29,
The drive device 32 and the grip 29 are connected by a flexible drive cable 33.
Further, the drive device 32 is connected to a display device 36 including a cathode ray tube 35 via a signal cable 34 . Furthermore, a flexible light guide cable 38 is connected to the front of the eyepiece 37 of the oblique view endoscope 27 and is connected to a light source device 39 . This light guide cable 3
8 and the drive cable 33 are used to improve operability so as not to interfere with the insertion of the insertion section 21 into the body cavity, the operation of bringing the ultrasound probe head 23 into contact with a predetermined organ, and the ultrasound diagnostic operation. , are connected in the same lateral direction to the endoscope eyepiece section 37 and the bending operation section 30 of the head of the grip 29, respectively.

The ultrasound probe head 23 and the curved portion 24 are
It is configured as shown in the figure. That is, a medium chamber 40 is formed in the ultrasound probe head 23,
An ultrasonic transducer 41 and a mirror 4 are provided in this medium chamber 40.
2 are arranged facing each other. This vibrator 4
A signal cable 43 inserted from the drive device 32 through the insertion portion 21 is connected to the mirror 42 , and a shaft portion 44 is formed on the mirror 42 .
A flexible drive shaft 45 is connected to. On the other hand, the bending section 24 is configured by pivotally supporting a plurality of joint members 46, which are covered with a rubber jacket 47, and further provided with a bending operation section 30 at the tip joint member 46.
The operation wire 48 inserted through the hole is fastened thereto.

The curved direction of the curved portion 24 is set in the visual field direction of the endoscope 27 as shown in FIG. The ultrasonic transmitting/receiving window 22 is configured to fit within the field of view of the mirror 27. In this way, in the case of the one for intra-abdominal organ diagnosis shown in the figure, the endoscope 27 inserted into the insertion section 21
The reason why the visual field direction and the curved direction of the curved portion 24 are set to the right when viewed from the operator is that when used for ultrasound diagnosis of the intra-abdominal organ 49, it is necessary to determine which part of the skin has many blood vessels and the organ. The position of the organ is determined naturally, and the insertion position and insertion direction are medically determined. This is because it is suitable for operation and observation within a body cavity, such as observation of the ultrasound probe head 23 and close contact of the ultrasound probe head 23 to an organ. Therefore, for ultrasonic diagnosis of organs other than intra-abdominal organs, the viewing direction of the endoscope 27,
It is a matter of course that the direction of curvature does not have to be to the right. Further, the ultrasonic transmitting/receiving window 22 provided in the ultrasonic probe head 23 is arranged in the viewing direction of the endoscope 27, that is, in order to visually confirm which part the window 22 is in contact with when the bending section 24 is bent. It is placed at a position perpendicular to the direction.

Further, as shown in FIG. 7, the cutout window 25 formed in the insertion portion 21 is formed in a connecting member 51 that connects the tip of the outer tube 50 constituting the insertion portion 21 and the curved portion 24. The outer tube 50 side of the connecting member 51 is fitted and fixed inside the outer tube 50, while the curved portion 24 side of the connecting member 51 engages the joint member 46 inwardly, and the outer circumference of the outer connecting member 51. It is fixed by screwing in screws 52. With this configuration, the inner side of the connecting portion between the joint member 46 and the connecting member 51 containing the drive shaft 53, the signal cable 43, the operating wire 48, etc. can be widened. Furthermore, as shown in FIG. 9, in order to make the notch window 25 formed in the insertion portion 21 large,
A mirror drive drive shaft 53 inserted into the insertion portion outer tube 50 is disposed on the opposite side to the viewing direction of the endoscope 27.

Further, the connection between the insertion portion 21 and the proximal body 28 is as shown in FIG. That is, the endoscope guide tube 26, the drive shaft tube 54, and the insertion section mantle tube 50.
A pipe holder 55 for holding and fixing the pipe holder 55 is inserted into the handle main body 28, a thread is formed on the outer periphery of the handle main body 28, and a cap 56 having a female thread is screwed from the outer circumferential direction. It is pressed and fixed to the hand portion main body 28. On the other hand, a fixing hole 57 communicating with the endoscope guide tube 26 is formed on the rear end side of the hand portion main body 28, and an O. ring 5
8, and further insert the hole 5 into the fixing hole 57.
The pin 6 engages in a threaded groove 59 provided on the inner periphery of the pin 7.
0 is screwed into the O-ring tightening body 61 protruding from the O-ring 58 to press and deform the O-ring 58.
The endoscope 27 is tightened to the ring 58 to fix the direction of removal and removal and the direction of rotation, and to maintain airtightness.
Further, the O-ring tightening body 61 is formed into a cylindrical shape so that the endoscope 27 can be inserted therethrough, and a lever 62 is provided protruding from the outer periphery of the rear part.

In such a configuration, as shown in FIG. 11, the operator grasps the grip 29 with one hand and also places his or her thumb on the bending operation lever 31 of the approximately spherical bending operation part 30 formed on the head of the grip 29. The insertion section 21 is inserted into a body cavity, for example, the abdominal cavity, through a trocar (not shown) while the abdomen of the patient is being applied. While observing diagonally forward to the right, move the ultrasound probe head 23 toward the organ 4.
Lead to 9. After confirming the organ 49, the user operates the bending operation lever 31 with the thumb, indexes the operation wire 48, and moves the bending portion 24 in the viewing direction of the endoscope 27 for intraperitoneal diagnosis as shown in the figure. The ultrasound probe head 23 and the window 22 for ultrasound transmission and reception are brought into view by curving it to the right as seen from the operator, and the ultrasound transmission and reception is performed while visually checking the organ 49 and the like, as shown in FIG. 12. The window 22 for the organ 49
It is placed in close contact with a predetermined part of the body.

As described above, the endoscope 27 faces the cutout window 25 formed on the side of the insertion section 21 behind the curved section 24, and has a perspective view at the tip, so that the field of view is limited to the ultrasound probe head 21. , the ultrasound probe head 23 can be curved in the direction of the field of view of the endoscope 27, allowing the ultrasound probe to be inserted while viewing the organ without being obstructed by the curved portion 24. This can be done while visually confirming both the probe head 23, and the diagnosis can be made accurately and easily. or,
It is also possible to check which position the ultrasonic wave transmitting/receiving window 22 is in contact with.

In this invention, in the above embodiment, the insertion portion 21
Although the endoscope 27 is configured to be inserted into and removed from the insertion portion 21, an optical system may be built into the insertion portion 21.

As described above, this invention is suitable for operations and observations within the abdominal cavity, such as guiding the observation of the window for transmitting and receiving ultrasonic waves to organs in the abdominal cavity, and bringing the window into contact with organs. Further, by bending the bending portion, it is possible to closely contact a predetermined region while visually checking both the ultrasound transmitting/receiving window and the organ, and it is also possible to confirm which portion the ultrasound transmitting/receiving window and the organ are in close contact with.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional ultrasound diagnostic device;
Fig. 2 is a usage state diagram of the same as above, Fig. 3 and the following shows an embodiment of this invention, Fig. 3 is a general schematic diagram of the ultrasonic diagnostic device, and Fig. 4 is an illustration of how the endoscope is removed from the insertion section. 5 is a view taken in the direction of arrow A in FIG. 4, FIG. 6 is a sectional view showing the ultrasound probe head and curved portion, and FIG. 7 is a cutout window and curved portion of the insertion section. 8 is a sectional view taken along the line B-B in FIG. 7, FIG. 9 is a cross-sectional view of the insertion portion, and FIG. 10 is a cutaway of the main part showing the main body of the proximal portion. A cross-sectional view, FIG. 11 is an explanatory view showing the state of use, and FIG. 12 is an explanatory view showing the field of view of the endoscope in FIG. 11. 21... Insertion part, 22... Ultrasonic transmission/reception window part, 23... Ultrasonic probe head, 24... Curved part, 27... Optical viewing tube.

Claims (1)

[Scope of utility model registration request] This is an intrabody cavity ultrasound diagnostic device in which an ultrasonic transmitting/receiving window, a curved part, and an optical viewing tube are arranged in order from the front in an insertion part having a proximal main body, and the optical tube is arranged in order from the front so as to be suitable for operation and observation in the abdominal cavity. An intrabody cavity ultrasound diagnostic apparatus characterized in that the visual field direction of the visual tube and the curved direction of the curved portion are set to the right when viewed from the grasping direction of the hand portion main body.