JPS58157433A - Ultrasonic diagnostic apparatus of body cavity - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an intracorporeal ultrasound diagnostic apparatus that facilitates assembly and disassembly and repair of a bending mechanism disposed in a gripping portion.

In recent years, in addition to endoscopes that can optically observe the inside of a body cavity or perform treatment using forceps by inserting an insertion section into a body cavity, diagnostics have been developed to transmit and receive ultrasound to diagnose acoustic information inside the body cavity. Ultrasonic diagnostic equipment is now being used to meet the needs of the world.

This ultrasonic diagnostic device emits ultrasonic pulses to a target object from the body surface, for example, and when the emitted ultrasonic waves propagate, the acoustic impedance, which is expressed by the density of the medium and the speed of sound, increases. Since it is reflected at a discontinuous boundary surface, the reflected ultrasonic pulse wave is received and acoustic information such as its reflection intensity is used for diagnosis.

Compared to X-ray devices, such ultrasonic diagnostic equipment has the advantage of being able to convey information about soft tissue fibers of living bodies without using a shaping agent, that it does not destroy living tissue fibers due to radiation, and that It is easy to use, 1iLvL is small, there are many θ advantages, and furthermore, the quality and storm of information obtained with the progress of uLgN regarding near-hand waves is improving, so one bed, one # * gong is used in the medical field. [It spreads and changes.

In contrast to diagnosis, which transmits and receives MAit pulses from the upper 1st bar structure, it is possible to transmit and receive ultrasonic pulses from a living body inside the body cavity, which is similar to the ultrasonic pulses. target)
Sincerely, transmitting and receiving ultrasonic waves of 110 large J4tIL number becomes a nuisance, and the value is M- and 111&N degrees, the point where it becomes 9-high to obtain information, intervenes in the threshold of anti-health care. The fact that it does not receive the shadow of subcutaneous jIIIup11◆, etc.
4F has many advantages, so it will become more and more convenient for women in the future. Intralimb ultrasonic II used by inserting into this body cavity
The IL #Sui device can be used as an optical K11llllll stage as an endoscope and as an integral part, or as a removable inner afil.
It is common to use 7L of K (Kouune-#) for convenience.

The ultrasonic probe head and curved part are connected from one side of the tip of the insertion part inserted into the body cavity, and the ultrasonic probe head and the curved part are connected to the end of the insertion part inserted into the body cavity. The operation part is inserted into the body cavity, and a part of the upper part is bent to bring the ultrasound probe head into contact with a desired location in the body cavity. It is now possible to diagnose the inside of the body cavity.

A pair of operating wires is fixed to the curved portion. The ridge of this operating wire is connected to a bending mechanism provided on the grip. By operating this bending mechanism, the pair of wires are pulled and relaxed to bend and move the head of the ultrasound probe.

However, since the operating wire is housed within the main body of the device so as not to interfere with the curvature viewing, a portion of the curving mechanism 0 is inserted into the grip and the rear part of the wire is fixed; The loosening part is designed so that it can be projected outside the grip and operated by the operator.

This rounding and bending mechanism has a part inserted into the grip to stop the operation, and the other part to come out of the grip. Banara De Soo
&l+Tsu, and disassembly and repair were 1111 and 0.

The present invention was made in consideration of the above-mentioned reference t+v, and is configured by dividing the upper corner bending mechanism into a wire drum thread that winds the wire and a J11Mk working system that operates the wire drum thread t1. 1 Transfer both of these to P1
The object of the present invention is to provide an intracorporeal ultrasound diagnostic device in which the gripping portion of the bending mechanism can be assembled and disassembled and repaired by detachably connecting them with a vehicle.

To achieve the above object, the present invention provides an ultrasonic probe kI that is sequentially inserted from the front at the tip of an elongated insertion section inserted into a body cavity.
M part and part of this ultrasonic groin ft are curved and t series are made, punishment 1 divine entry - (D one hand - is provided with a gripping part and tied to the sales gripping capital - Shinmr is arranged, Korihei - A pair of O's to Aisakaki
K t' Stop the tosier - C The wire t - 1 extension m
rit to one side and crashed into the #1 song house, and by Mayuki Ryoran Waikai, it was created in the form of InLi1a with 4 pulls on Soi γ, yIA #l Shiwan-1111 songs! Using the intracorporeal ultrasonic fluid diagnosis III acupuncture W1vCν, which was made so that the
Separate the wire drum system that relaxes and the one and one reluctance threads that move this wire drum system forward, - arrange the wire drum system inside the grip, and - one operation system outside the grip. It is said that the two were removably connected at the t-transmission link.

(Margin below) The book &@ will be explained in detail with reference to the drawings below.

Figures 1 to 17 show an embodiment of Book 9#4, with Figure 1 being an overall front view of the ultrasonic diagnosis II device, and Figure 2 showing the operating section on the hand side of the ultrasound probe body. Shown in Heisei 11i1.
Fig. 3 is an enlarged vertical cross-sectional view of the tip of the ultrasound probe main body in Fig. 1; Fig. 4 is an enlarged longitudinal cross-sectional view showing the vicinity of the curved part and insertion part tip in Fig. 1; Fig. 5 is A of Fig. 4; -All
1mli side view, Fig. 6 is a BB vertical sectional view of No. 411, Fig. 7 is a c-cg* sectional view of Fig. 114, and Fig. 8 is an enlarged I11 side view of the operating section of the ultrasound probe body. Figure 9 is 118
Figure 10 is a cross-sectional view of the paulownia part of the optical visual bud suit shown in Figure 8.
A side view of the cap locking piece in the figure, Figure 11 is D-D in Figure 8.
Fig. 12 is an enlarged vertical cross-sectional view of the operation section of the main body of the ultrasonic probe 7 on the electric cable side, Fig. 13 is an enlarged view of the bending structure in the operation section, and Fig. 14 is the wire drum of the bending mechanism. 1511 is a side view showing the curved knob side of the operating section, J116all & is a perspective view showing the usage state of this embodiment, and FIG. 17 is the optical viewing tube in the usage state of FIG. 16** FIG.

As shown in FIGS. 1 and 2, the ultrasound probe body 1
A part 3 of an ultrasound probe that accommodates a function of transmitting and receiving ultrasound sequentially from the front and a curved part 4 are connected to the distal end of an elongated insertion part 2 that is inserted into a body cavity. A cutout window portion 5 is provided on the upper outer periphery of the insertion portion 2 on the other side.
An optical viewing tube 6 of a perspective type whose viewing direction is obliquely forward (for example, 45 degrees) is disposed from the end of the insertion portion 2 to the opening 1II5, and an optical viewing tube 6 is disposed in the optical II tube to be freely inserted and removed. Furthermore, an operation 117 that also serves as a grip is provided on the front hand side of the front dispensing section 2, and a luxiful electric cable 8 is connected and extended to the side of this operation section 7. A liquid-tight connector 9 is attached to the rear end,
The entire structure is liquid-tight.

The electric cable 8 extends from a pulse generating unit 10 (generates pulses to be supplied to an ultrasonic transducer to be described later in the ultrasonic probe head 3).
1 is adapted to be connected to a second electrical cable 12 having a second electrical cable 12 . Further, a third electric cable 13 extends from the pulse generating unit 10 and is connected to a power source and an ultrasonic display device (not shown) through a connector 14.

In this embodiment, the electric cable 8 extending from the main body 1 of the ultrasonic probe 7 is not integrally connected directly to the pulse generation unit 10 because the entire ultrasonic probe main body 1 including the electric cable 8 is This is because it is necessary to separate it from the pulse generation unit 10 so that it can be immersed in the II liquid for sterilization. Further, as described above, the electrical cable 8 is not connected to the pulse generating unit 10 detachably, but is connected via the second electrical cable 12 extending from the pulse generating unit 10. The electric cable 8 is a component of the ultrasonic probe body 1 that comes into direct contact with the probe 1.
This is because it is inconvenient to make it longer because it is necessary to immerse the entire body in the liquid. Generally speaking, the pulse generating unit 10 has a hook 15 for hanging, and is used by being hung from an object as appropriate, so that the electric canor 8 does not touch the floor or the like. Furthermore, a light cart: L+gold 16 is protruded from the side of the hand side of the recording optical sight 16.
The flexible light guard cable 1d or 11112 can be freely connected to the 1m flexible light guard cable 1d or 11112.

The fBi wave O-1 head 3 and curved portion 4 are constructed as shown in FIG. The ultrasonic probe head 3 has a soft tubular outer cover 19r made of polyethylene or the like at its distal end, and the rear end of the outer cover 19 [one end is near the boundary with the covering tube 20 on the outer periphery of the curved part 4]. The thread-like member 2 is rotated 11 times in a concave step of a ring-shaped connecting and fixing member 22 that is aligned with the outer periphery of the tip block 21, which will be described later.
3 and inoculant 24 to maintain internal liquid tightness,
This allows the outer layer h-bar 19 to be firmly fixed without coming off from the stepped portion. That is, the inner diameter around the rear end of the mantle cover 1.9 is made narrow in the shape of a step, and this narrow step is connected to the connecting fixing part $122 in which the elastic soft tube 25 is ringed. The end of the fitted outer mantle cover 19 is fixed firmly by the thread-like member 23 positioned at the position of the concave step.
Adhesive 111 is attached to the outer circumferential recess of the thread-like member 23 marked with
24 is applied, and the improvement of II density function is coupled. A soft covering tube 20 in steel contact with the connecting and fixing member 22
A recessed step is also formed near the end of the recess, and a thread-like member 26 is placed in this step, and an adhesive 27 is applied to the outer circumference of the recess to achieve m-density. In this way, the soft outer cover 19 on the tip side and the curved i! 14 is not directly connected to the soft covering tube 20 on the outer periphery, but is interposed with a ring-shaped connecting and fixing member 22 having sufficient strength, so that it holds the mantle cover 19 and the covering tube 20 firmly and prevents insertion and removal. When repeating the process, the outer cover 1 on the tip side
9 or the covering tube 20 on the outer periphery of the curved portion 4 is worn out or damaged, it is constructed such that only that portion can be replaced by unraveling the thread-like members 23 and 26.

The hollow tip block 21 whose outer periphery is covered by the tube members 19 and 20 has a storage chamber 28 formed therein. The tip block 21 is identified by a screw or the like, and the ultrasonic wave transmitting/receiving surface 3 of the ultrasonic transducer 29 is
0 and for example 45! A rotatable and detachable ultrasonic mirror 32 is housed and attached to the tip of a rigid first shaft 31 driven by four poles in order to scan ultrasonic waves while tilting. The storage chamber 28 is filled with an ultrasonic transmission medium 33. If a sucrose aqueous solution with a concentration of approximately 5 to 15% is used as the transmission medium 33, rusting of each member can be prevented compared to the case of salt water, etc., and the acoustic impedance can be made approximately equal to that of a living body. Ultrasonic waves can be transmitted efficiently, and since the water S* has less loss component in the propagation of ultrasonic waves than oil or the like, it is possible to prevent a decrease in the intensity of the ultrasonic beam during transmission.

The base side of the mirror 32 is connected to the axis 31 of iii.
A guide groove 34 is formed so that the mirror 32 can be inserted and removed from the right angle of the shaft 31, and the mirror 32 can be detachably locked to the shaft 31 by means of a screw that is screwed into the screw hole.

A signal cable 35 for transmitting signals for transmitting and receiving ultrasonic waves is connected to the ultrasonic transducer 29, and this cable 35 is inserted through the bend 114 and inside the insertion section 2 to the operating section 7, and is inserted into the operating section 7. The device is configured to be finally connected to an external ultrasonic display device via an electric cable 8 from the side of the device 7 .

A part of the storage chamber 2811111 formed by the tip block 21 around the mirror 32 is provided with an opening to form a window 36 for transmitting and receiving ultrasonic waves, and the ultrasonic transducer 2
The ultrasonic beam sent out from the transmitter/receiver 1130 of 9 is reflected by the rotationally driven mirror 32 and is reflected by the surrounding tip block 21.
A part of the ultrasonic waves are emitted from the transmission/reception window 36 to the outside through the mantle cover 19, and are reflected at the discontinuous boundary surface of the external acoustic impedance.
The beam enters the storage chamber 28 from the section 36, is reflected by the mirror 32, and is incident on the ultrasonic transducer 29.

The transmitting/receiving layer section 36 is used as an opening for removing and removing the mirror, and the mirror 32 can be removed or attached through this opening.

The mirror 32 is attached to the tip of the dominant 10th shaft 31, and this shaft 31 is screwed to the succeeding second hard shaft 37, and this hard second shaft 37 is rotatable by a bearing 38. Supported. The rear end side of this bearing 38 comes into contact with a locking part protruding inside the tip block 21 and a recess formed in the second shaft 37, and the other end is prevented from forward movement by a ring-shaped lock 39. Supported.

The outer peripheral surface of the hard first shaft 31 and the tip block 21
Inside! The annular air conditioning section of Ill■ is heavily equipped with seal members 40, 40 each having 11 sides approximately U-shaped, and each of these seal members 4
An elastic member (not shown) is installed inside the 0.40 U-shaped recess, and both ends of the U-shape are biased inward and outward in the radial direction. abutting,
And one U-shaped recess and the other seal part 140.40-
Grease such as molycote grease filled in the grease filling chamber 41 formed in the sealing member 40 and 40 provides liquid tightness so that the transmission medium 33 does not leak into the bearing i238 collar and prevents air from entering. The structure is such that frictional resistance during rotation of the shaft 31 in contact with the shaft 31 is suppressed as much as possible so that the shaft 31 can rotate smoothly.

Inside the curved portion 4 covered with the covering tube 20, a large number of joint pieces 42, 42... which connect the adjacent pivot points on both sides in a rotatable manner are transposed, and at the tip thereof The positioned joint piece 42 is fixed to the outer periphery of the end block 2111. The tips of a pair of operating wires inserted from the proximal side are fixed to both sides of the joint piece 42 located at the tip, and by pulling and relaxing the operating wires, the cutout window can be opened. The bending portion 4 is configured to be able to bend in the left-right direction when the portion 5 is positioned at the top. On the other hand, in the inner hollow part of this curved part 4, there is a soft drive shaft 44 having a low coefficient of friction, the front end of which is connected to the hard second shaft 37, and the rear end of which is connected to a hard drive shaft 43, which will be described later. A soft tube 45 made of Teflon, for example, is inserted therethrough.

[Note: The flexible drive shaft 44 is formed of a tightly wound coil wound in two layers, an inner layer and an outer layer, and these inner and outer coils are wound in opposite directions. The flexible drive shaft 44 and the hard second shaft 37 are connected by a connecting pin 46 . This coupling means is as follows. That is, the tip of the flexible drive shaft 44 is solidified by welding or the like, and the bottle insertion hole 47 into which the bottle 46 is inserted is formed.
4! Holes are drilled in the h direction. The rear end of the hard second shaft 37 is formed to have a small diameter so that it can be inserted into the tip of the soft drive shaft 44, and the rear end of the hard second shaft 37 is formed to have a small diameter. A bottle fitting hole 48 that communicates with the bottle fitting hole 47 bored in the flexible drive shaft 44 is bored at the end sl. Then, by fitting and fixing the bottle 46 in communication with both the bottle insertion holes 47° 48 bored in the second soft and hard shafts 44.37, the second shafts 44, 37, which are both soft and hard, can be fitted and fixed. 44.37 is combined.

Specifically, the curved section 4 and the insertion section 2 following it are connected via a connecting member 49 at the tip of the insertion section, as shown in FIG. In the fourth WA, a part of the joint piece 42 located at the rearmost position of the curved part 4 has an enlarged diameter stepped part 50.
This stepped portion 50 has screw insertion holes 51 that open in the radial direction at, for example, three locations in the circumferential thickness, and inside this stepped portion 50 there are holes 51 for passing through the screws. A nut 52 is dropped in and fixed.

This nut 52 is formed in an arc shape so as to be in close contact with the inner surface of the stepped portion 50, and is completely inserted into the stepped portion 1150, thereby preventing the 1111 portion of the curved portion 114 from being narrowed. .

On the other hand, a tip portion of a subsequent connecting member 49 is fitted to the rear of the joint piece 42 so as to cover the outer periphery of the step 1I150, and the tip portion thereof communicates with the screw insertion hole 51. For example, a 3-screw insertion hole 53 is bored. Then, by screwing the screw 54 in a state where the screw insertion hole 53 at the tip of the JI connecting member 49 communicates with the screw insertion hole 51 and the nut 52 at the rear of the joint piece 42, the I curved portion 4 and the insertion portion 2 are connected to each other through a connecting portion 449 at the tip of the insertion portion 112. This connecting member 4
A drive shaft insertion hole 55 is provided in the LJ 9 in the longitudinal direction, and the rear part of the flexible drive shaft 44 inserted into the flexible tube is inserted from the front side. The middle part 1 is connected to a subsequent hard drive shaft 43. The flexible drive shaft 44 and the hard drive shaft 43 are connected by a connecting pin 56. The 18 means are as follows. In the 4WD, the rear end of the flexible drive shaft 44 is hardened with II or the like, and a bottle injection hole 57 into which the bottle 56 is inserted is bored in the radial direction. [The tip of the recording drive shaft 43 must be formed to have a small diameter.]
The rigid drive shaft 43 is inserted into the rear end of the flexible drive shaft 44, and the tip of the rigid drive shaft 43 has a hole drilled in the flexible drive shaft 44.
A communicating pin insertion hole 581'P is bored (and the above-mentioned soft and hard lI! moving shafts 44.43 are drilled for inserting both bottles f14) 7.58. These soft and hard layer moving shafts 44, 43 are connected by fitting and fixing. Further, this hard drive shaft 43 is rotatably supported by a bearing 59.

Further, the hard drive shaft 43 is covered with an outer cover 60 made of, for example, Teflon, which has a low coefficient of friction.

As described above, the optical fiber 11 inserted into the connecting member 49 from the rear side of the insertion section 2 through the optical bare tube guide 161 is inserted into the connecting member 49.
A cutout window 5 is formed that exposes the tip of the tip 16. This notch 115 is cut out in a fan shape having left and right downward inclined surfaces 62 and 62 in the upper outer circumferential axis direction of the connecting member 49, and the optical bare tube guide tube 61 A communication hole 63 is formed to communicate with. Communication hole 63 and insertion part 2 of the above connection M4449
One optical device penetrated inside? ll! All 61 is provided at the upper side with respect to the axial center of the insertion section 2 and at a position eccentric to the right side when viewed from the hand side (worker's side). Insert from the proximal side of l!1
It is inserted through the guide tube 61 in 2 and over the notched window 5, and the slanted tip part facing the illumination window and the viewing window 1* faces right or left, and it is opened from the side of the rono palanquin.
It is inserted in the front and back on top and white. As mentioned above, optical vision! What is positioned above the axial center of the 61L insertion 8112 is the optical system that is displayed at the distal end of the insertion section during insertion into a body cavity and observation. 1II
This is because the field of view of the optical viewing tube is not obstructed even if the tissue at the tip 81I4, 111 m of F6 gets intruded, and the optical viewing tube 6 can also be arranged facing forward and to the left so that observation can be performed in both directions. It is. Also, the optical viewing tube 6 is viewed from the It111 side with respect to the axial center of the insertion section 2.
The reason why the power is distributed eccentrically to the 6th copper is to prevent the field of view, especially in the right direction, from being obscured by the insertion portion 2. In this way, the reason why the surgeon is trying to secure a clear field of view, especially to the right side, is to ensure that the operator can see where there are many blood vessels in the skin and where the organs are. The insertion position and insertion direction are determined medically, so the normal usage condition is -
If there is a field of view in the right direction and the field of view is curved in the direction of the field of view, all of the organs and the ultrasonic beam 11M3 to the organs are
Secret surveillance, etc. *I! This is because it is suitable for repeated cultivation in the field. In addition, in this embodiment, the inclined tip of the optical reading 6 can be set in the direction, and the ultrasound probe head 3 can be bent in the Lh direction.
This is because, depending on the m* part, a blind spot may occur in a part of the body when viewed only in the right direction, and it is necessary to include this blind spot in the field of view. Therefore, g** other than i.p.
For those used for diagnosis, the field of view and the direction of curvature do not need to be to the right or left as shown in .

Furthermore, in this embodiment, the inclined tip of the optic 1116 is set upward by about 20 degrees from the horizontal position facing right or left, because the lower side of the field of view is the insertion part 2 or the hole inserted from the lower side. 11G, :Thus, this is to prevent it from being damaged.

The outer periphery of the rear end of the connecting member 49 is covered with a mantle tube 64 that constitutes the insertion section 2, and is fixed by soldering, brazing, etc. As shown in FIG.
Optical bare tube guide connected to 3 i! 61, a hard drive shaft 43 covered with an outer skin, and a portion of the wire 65, 65 and signal cable 35 are inserted through the drive shaft 43, respectively.

An operating section 7 is connected to the rear end of the insertion section 2 as shown in 8th vA. This operation section 7 is a drive system 6
7, a bending mechanism 69 disposed in a part of the grip a[168], and an optical viewing tube attaching/detaching mechanism 70 disposed at the rear of the grip 68.

The upper grip part 68 is attached to the lower case 71. Consisting of a middle case 72 and an upper case 73 formed relatively large to accommodate the drive system 67 and the bending mechanism 69, each case 71
．． 72 and 73 are fitted into each other, and an O-ring 74 is attached to this fitting part.
．． 75 has been replaced with a new IkW! I is shown and is screwed in by screws 76 and 77. The insertion portion outer tube 64 is connected to the middle coupling member 2 of this gripping portion 68 by a connecting member 78. This series M member 7
8 has a hole 79 through which the optical tube guide tube 61 communicates, a hole 80 through which the drive shaft 43 is inserted, a wire insertion hole (not shown), and a signal cable insertion hole (not shown). The flange 78a is brought into contact with the inner wall of the connecting member 81 formed in the middle case 72, and an O-ring 82 is interposed between both 1-.IIIW! It is measured by screw 83.83. The insertion portion outer tube 64 fits around the outer periphery of the connecting member 78 and is fixed by soldering, brazing, or the like. An optical viewing tube guide tube 61. is inserted into the grip portion 68 from the front. A rigid drive shaft 43, a pair of wires 65, 65. A signal cable 35 is extended and inserted. The hard drive shaft 43 is supported by a connecting member 78 via a bearing.

The drive system 67 is for ultrasonic scanning by rotating the ultrasonic mirror 32 once through the drive shaft 44, 43, 37, 31, and is screwed to the L end side of the inner case 72 and extends upward. Bearing plate 8 extended and housed in upper case 73
4 is provided with a motor 85 connected to an electric power source via an external electric cable 8, and a pulley 87 is mounted on the output shaft 86 of the motor 85, and a rigid shaft Ii is supported on the bearing plate 84. ! A deceleration pulley 89 is pivotally attached to a moving shaft 88, and a belt 90 is installed between both pulleys 87 and 8911.

Furthermore, a single rotation detection 1191 is provided on the bearing plate 84 at a position facing the side surface of the reduction pulley 89. This one
The rotation detection 1191 is for measuring the directivity angle of the scanning mirror 32, that is, the radiation direction of the ultrasonic waves, and is for measuring the one rotation angle of the deceleration pulley 89 which is attached to the drive shaft 88. It has become. This simultaneous rotation detection 1191 is composed of a detector main body 92 that transmits and receives light, and a light-reflecting ring 93 of a loop thread attached to a non-reflective part on the side surface of the pulley, and light is emitted from the detector main body 92. On the side facing the deceleration pulley 89, an E-light opposite side plate 93 is pivotally attached at an appropriate position on the side of the deceleration pulley 89, which reflects the light emitted from the rotation detector body 92 as described above. The reflected light is reflected by the fM93 and is received again by the detector main body 92, and the rotational position of the reflection plate 93, that is, the rotational angle of the drive shaft 88 is measured, and the radiation direction of the ultrasonic wave at that time can be determined as described above. The information is transmitted to a separate display device via an external electric cable 8.

The hard drive shaft 88 of the drive system 67 and the hard drive shaft 43 extending from the insertion part 2 into the grip part 68 are a soft drive shaft inserted through a soft tube 94 made of Teflon, for example, with a low coefficient of friction. They are connected by a shaft 95.

The rigid drive shaft 88 of the drive system intersects directly inward in this way.
The paper holder 68 is small, and the hard drive shaft 43 from inside the insertion section 2 is connected by a soft drive shaft 95 instead of a bevel gear. Optical viewing tube guide! 61 is inserted, and an optical viewing tube fitting 1112111170 is provided, so that the space can be reduced.

This flexible drive shaft 95 is formed by rotating two closely wound coils in opposite directions, and joints 96° 96 are disposed at both ends of the flexible drive shaft 95.
wAll1 hand 96.96: J:T, the above insertion part 2
The inner hard drive shaft 43 and the hard drive shaft 88 on which the deceleration pulley 89 is mounted are connected to each other. The joints 96.96 are attached to both ends of the flexible drive shaft 95 as follows. That is, both ends of the flexible drive shaft 95 are solidified by welding such as soldering, brazing, welding, adhesive, etc., and 111 bottle fitting holes 97 and 97 are drilled in the radial direction in this assimilated portion. On the other hand, the joint 96.96, in which bottle fitting holes 98, 98 communicating with the bottle fitting holes 97.97 of the soft drive shaft 95 are bored in the radial direction, is connected to both hardened ends of the soft drive shaft 95. The bottle fitting hole 97, 97, 9 inserted into the part and communicating with the above.
It is attached by engaging and fixing the bottle 99.99 to 8.98.

In addition, a male screw is carved on the outer periphery of the other end of the joint 96 attached to the flexible drive shaft 95, and the insertion al1
A screw hole is formed on the inner periphery of the leading end of the dominant drive shaft 88 which connects the end of the hard shaft 4311 from inside s2 and the pulley 89, and connects these joints 96 and 96 with the hard drive shaft from inside s2. 43 and a hard drive shaft 88 to which a pulley 89 is attached are connected by a screw I. In addition, the joint 96.96 of the flexible drive shaft 95 and the 1liil moving shaft 43.8
8 can be connected not only by screwing as described above, but also by various methods such as a key or a bottle.

In addition, by operating the bending mechanism 69, one wire 65 is pulled and the other wire 65 is relaxed, and the bending part 4 is bent to move the probe i1 part 3 at the tip of the insertion part 2 to the right. Alternatively, it can be turned to the left. As shown in FIG. 13, this curved structure 69μ is composed of a wire drum system 100 and a rotating imaging system 101, and is easy to assemble and disassemble. This wire drum system 100 is disposed inside the right side of the upper case 73 of the upper gripping part 68. That is, this wire drum system 101u has a fixed shaft 102 fixed to the side surface of the bearing plate 84 that supports the motor 85, and this fixed shaft 10.
The wire 65 is rotatably supported by the wire 65 and wound around the wire 65. It is composed of a turn drum 103, a gear 104 that is pivotally attached to this drum 103, and a presser foot 5141105. This drum 1031. As shown in FIG. 14, each rear end of a pair of wires 65 and 65 is fixed. In the figure, mark @106. i06 is a pair of regulating plates provided on the drum 103, and *si of the pressing member 105 when the drum 103 rotates by a predetermined angle.

7, preventing excessive rotation of the drum 103, and reducing the degree of curvature of the curved portion 4 and the width 1=65.6.
5 towing distance is regulated.

Further, the rotation system 101 has its distal end connected to the F of the gripping portion 68.
While it is inserted into the inside of the upper case 73 through the opening 108 of the case 73, its main body side is attached to the outside of the upper case 73 via a support member 109 with screws 110. This support member 109 has a plate shape, has a hole 111 bored in the center, and an O-ring 112 is disposed on the inner periphery of this hole 111. Further, this support member 109 and the first case 73 are made liquid-tight by an O-ring 113. The F rotation operation system 101 is as follows. That is, a gear 114 that meshes with the gear 104 of the wire drum system 100 is rotatably supported at the tip of the fixed shaft 115 inserted into the upper goosef 3. The tip of this chamber shaft 115 is formed into an angular shape, and is fitted and fixed into a fixing member 117 having an engagement hole 116 of the same shape, thereby fixing the tip of this fixed shaft 115. The gears 104 and 114 mesh with each other at the same time as they are fitted into the portion 44117, and the arrangement position of the fixing member 117 and the formation position II of the opening 111 are as follows:
It is provided at a position where this condition is satisfied. This fixing member 117 is fixed to the flange of the bearing plate 84 with screws 118, 118. In addition, the fixed shaft 115 has ---
A metal piece 119 is fitted, and the rotating cylinder 119 fixes the gear 114. A transmission date 120 located on the opposite side of the support member 109 is fixed to the rotating cylinder 119. This transmission circle 11120 has a cross-sectional shape, and its outer periphery extends in the diagonal direction.

An O-ring 121 is disposed between the transmission circle III 20 and the upper rotating body 119 to ensure liquid tightness.

An annular angle knob 122 is fixed to the outer periphery of this transmission circle Ill 20, and when this angle knob 122 is rotated, one ram 103 on the wire drum system 100 side is rotated to the right or left, and the pair of wire 65.6
5 is pulled or relaxed, and the bending portion 4 is bent. On the inner circumference of this angle knob 122,
One case of the support part 44109 is 73 t, -! jAJ
A hole 111123 is formed through which the screw 110 is inserted. Further, the rotation operation system 101 is provided with a lock mechanism 124 for locking the rotation of the angle knob 122. This locking mechanism 124 is
A spring member 125 that is fixed to the back surface of the transmission circle (L) 120 and applies elastic force in the rear direction, and this spring member 12
Sliding contact part $1126 that makes sliding contact with 5, and this sliding contact part @126
A pressing member 127 that presses forward, and this pressing member 12
7 and a movable member 128 that moves the movable member 128 forward.
A spiral is formed on the contact surface between the movable member 128 and the fixed shaft 115, and the engager 129 is rotated. As a result, the movable member 128 moves forward along the fixed axis, and the movable member 128 moves the pressing member 127 forward, and the pressing member 127 presses the contact member 126 against the leaf spring 125. Transmission disk 1 due to the frictional force generated in
20 is locked, and the curved portion 4, which has been curved to the right or left, is prevented from returning. Further, a stopper mechanism 130 is attached to this lock mechanism 124, and this stopper mechanism 130 prevents excessive locking. This is because if the curved part 4 remains curved during an operation such as removing the main body of the ultrasonic blower 1 from the body cavity, and is strongly locked in that state, this curved part 4 Since this may cause damage to the inside of the body cavity, the degree of locking is adjusted so that the curve 114 is normalized to a straight line by the force of impact with the body. This stopper machine-13
0, a first bevel gear 131 is fixed to the fixed shaft 115, a bin 132 is provided protruding from the movable member 128, and a second bevel gear 133 having a protrusion that abuts against the bin 132 is attached to the first bevel gear. 131, and fix the fixed shaft 11 with the nut 134.
It is removably attached to Engage 129 above.
When the movable member 128 is rotated by a predetermined angle, the bin 1 of the movable member 128
32 abuts against the protrusion of the second bevel gear 133 to prevent the L gauge 129 from being turned too much, that is, from being locked too much. Since the second bevel gear 133 is only detachably attached to the fixed shaft 115, the rotation angle of the engagement 129 can be set appropriately by resetting the engagement position pupils of both bevel gears 131 and 133 at any time. It has become.

#11 of the angle knobs 122 of the rotation operation system 101
Nine cabinets 135 are formed in m, and this space 135
A scale plate 136 is rotatably filled inside, and the cap screw 1
37, it is removably screwed onto the angle knob 122. This screw 137 is inserted through a radial screw hole 138 opened on the outer circumferential side of the angle knob 122. The tip of this screw 137 is fixed to a circumferential groove 139 carved in the contact surface of the scale plate 136 with the angle knob 122. A neutral indicator 140 is displayed on the scale plate 136 as shown in FIG. 15, while a fixed indicator 141 is displayed near the outer station of the angle knob 122 of the upper gauge 73. is rotated to align the F2 indicators 140 and 141 with the curved portion 4 extended directly, and in this aligned state, the scale plate 136 is fixed to the angle knob 122.

On the other hand, an optical viewing tube attaching/detaching mechanism 70 is disposed in a part of the gripping portion 68, as shown in FIG.

This optical viewing tube attachment/detachment mechanism 70 is an optical I! It is designed to be removably fitted into a cover member 142 fitted to the outer periphery of the rear end of the Tominai I61. This cover member 142
The small diameter side of this /j bar member 142 is fitted to the outer periphery of the rear end of the optical viewing tube guide tube 61, while the large diameter side A flange 143 is formed, and this flange 143 abuts on the outer surface of the cover of the Kusuf 2 in the F2 through the 1'l 144. It is fixed to the inner case 72 with screws 146.

At the center position of this optical viewing tube attaching/detaching mechanism 70, the above-mentioned optical tube is installed.
A tube body 147 through which J41!6 is inserted is provided. On both sides of the tube body 147, there are notches in the axial direction, into which the light guide caps 16 of the optical FA tube 6 are inserted, as shown in FIG. has been done. This cap insertion part 148.1
48 is a mouth at the rear end of the tube body 147, and the base 16 is inserted from one side and the optical viewing tube 6 is fixed therein. A leaf spring 149 is attached to the outer periphery of the tubular body 147, and the leaf spring 149 is given an outward elastic force.
A protrusion 150 protrudes from the tip of the tube 147, and a mouth member 151 is fitted onto the outer periphery of the tube 147. This rotating member 151 is rotatably fitted into the tubular body 147.

A screw hole 152 is radially bored in the rear portion of the rotating member 151, and a bottle 153 is fitted into this hole 152 with its tip portion slightly protruding inward. This bottle 153
The tip end of the T-piping body 147 is inserted into a circumferential long hole 154 bored in the rear part of the T-piping body 147 . Therefore, this rotating member 151 is moved by the width of this elongated hole 154, for example, 15 FI on the left and right sides.
The cough optical tube 6 can be rotated relative to the front and rear tube body 147, and at the same time the optical viewing tube 6 can be rotated in the same manner while being supported by the tube 147, so that the field of view of the cough optical viewing tube 6 can be changed. Further, on the inner periphery of this rotating member 147, the above-mentioned leaf spring 14 is attached.
A hole 155 is formed in which the upper part of the protrusion 150 of No. 9 is engaged, and when the protrusion 150 engages with this hole 155, the above optical view is observed! 6 is set so that it points 20 degrees upward from the side, and this state is always maintained.

Further, on both sides of the rotating member 151, as shown in FIG.
ai141 human parts 156, 156 are notched in the axial direction. This base insertion part 156.156 is this rotation SNJ
151 is opened at the rear end surface, and 7 (] of the optical viewing tube 6 is opened from the rear.
・Insert the cap so that the Gytro gold 16 is inserted 1-] 1
58, and is formed into a substantially U-shape.

A cap locking piece 157 shown in FIG. It has a cap insertion opening 158 and is formed in a substantially ] shape, and this [1-metal locking piece 157 has an optical view!
The cap insertion opening 158 is provided with an elastic force that narrows it so as to support the cap 16 of 6, and the cap 16 protrudes inside the cap insertion slot 158 so as to firmly support the optical m*6. A pair of protrusions 159 that lock onto the back surface of
．． 159 are arranged.

An oval-shaped rotation ring 160 is rotatably fitted to the outer periphery of the tip of the tube body 147. The leading end of the synchronizing ring 160 extends forward, and a female screw 161 is cut into the inner periphery thereof. This ring 16
The female screw 161 of No. 0 is adapted to be screwed into a female screw 162 carved on the outer periphery of the rear end of the cover part M142, and is screwed into the rear end of this cover part 44142. It is configured as follows.

The front side of this rotating ring 162 and the cover s! 4414
2, a pusher member 163 is fitted into a portion of the tip of the mounting body 147. The inner periphery of the tip of this pressing portion 1163 is provided with a female thread and a circumferential protrusion 164 that protrudes radially inward. Further, an O-ring 165 is disposed between the pressing member 163 and the cover part $4142 to achieve the desired effect. This pressing part 44
On the #iJ side of 163, a mounting member 167 with an optical viewing tube insertion hole 166 is provided, and this mounting number) sa
A male screw is carved on the outer circumference of the rear part of i67, into which the female screw on the inner circumference of the tip of the pressing part 1A163 is screwed, and this attachment is done so that the member 167 is screwed onto the tip of the pressing member 163. It has become. And this mounting number” part 816
A step portion 168 is formed on the inside of the rear part of 7, and this step portion 16
8 and the protrusion 164 of the pressing member 163.
9 are arranged. This gasket 169 has an optical tube insertion hole 170 with a diameter smaller than the outer diameter of the optical tube 6, and when inserting the optical tube 116, the optical tube 116 is
It is designed to be in close contact with the outer periphery of 6. This patchkin 1
69 is formed with a valve seat 172 against which a valve body 171 (described later) comes into contact.

The valve body 171 is attached to the gasket 162 by a spring 173.
The mounting member 167 is provided with a biasing force that brings the valve seat 172 into close contact with the valve seat 172. That is, the first valve body 171 is configured to be in close contact with the valve holder 172 of the gasket 169 at all times to close the optical viewing tube insertion hole 170. This is because during observation 2 diagnosis with the insertion s12 of the ultrasound probe body 1 inserted into a body cavity, when 1L mucus or the like adheres to the tip of the optical viewing tube 6 and the field of view is obstructed, the optical viewing tube 6 It is necessary to remove a mouthful of the tube from the insertion section 2 and wipe off the dirt on the distal end surface.In addition, in order to convert the field of view of the optical tube 116 from the right or left direction to the left or 6h direction, the optical tube 6 must be removed from the insertion section 2. This is to prevent the gas previously supplied into the cavity from leaking out when the optical sight 16 is removed from the insertion section 2, since it is necessary to remove it and reinsert it.

In the optical viewing tube attachment/detachment mechanism 70 constructed in this manner, by rotating the rotation ring 160 to remove it from the 7J lever member 142, not only the gasket 169 but also the entire body can be removed from the cover 1ili42 for cleaning or destruction. It consists of noodles.

Further, the signal cable 35 is screwed to the upper end of the lower case 71, extends upward, and is connected to the head amplifier 174 housed in the middle case 72, where the signal cable 35 is connected to the head amplifier 174 housed in the middle case 72. After the signal is amplified, this grasp 5
A line II; extending from the side of the s68 in the center is supplied via a cable 8 to a separate display device to display shadows caused by ultra-M waves. This head amplifier 174 is located below the middle case 72 or inside the lower case 71, that is, 1. Flexible drive shaft 95 and optical Ij4I! The substrate 175 is suspended downward so as to be opposite to the motor 85 and the rotation detection 191 with the guide tube 61 in between, thereby minimizing the influence of the frequency from the motor 85. .

In such a configuration, first, the ultrasound probe head body 1
Optical viewing tube attachment/detachment mechanism 7 provided in the operation section 711 of
0, the optical viewing tube 6 is inserted in a rightward or diagonal direction and upward by about 20 degrees from the side, and the light guide cap 16 of the optical viewing tube 6 is inserted into the cap insertion portion 148,156. At this time, the gasket 169 in the optical viewing tube attaching/detaching mechanism 70 comes into close contact with the outer periphery of the optical viewing tube 6, and
Reference numeral 6 indicates the clamping force of the mouth-shaped cap locking piece 157 attached to the sharpening side 70 of the optical viewing tube, and the clamping force of the cap locking piece 157.
It is firmly supported by a pair of protrusions 159° 159 disposed on.

After that, as shown in FIG. 16, the operator grasps the grip part 68 with one hand (6 hands),
8, insert the insertion section 2 through the trocar 176 while placing the abdomen of the thumb on the angle knob 122 provided on the side of the insertion section 8.
is inserted into a body cavity, for example, into a cavity. At this time, the optical viewing tube 6 of oblique II is inserted into the insertion section 2 to the right or to the left, diagonally in front of the W.
++ While checking the ultrasound probe head 3 by bending the curved part 4 to the right or left, select the desired organ W17.
The ultrasonic wave is guided and brought into close contact with the organ 1177, and ultrasonic waves are transmitted and received in a sector-like manner to display an ultrasonic cross-sectional image of the viscera 1177 on an external display device for observation and diagnosis.

In addition, in this embodiment, the rotation operation system 1 of the bending mechanism 69
01 is 1. It is attached from the outside to the 6th side of the F case 73. To do this, first insert the tip end of the fixed shaft 115 of the low operation system 101 into the upper case 73 through the opening 108 of the upper case 73, and then 11 into the insertion hole 116 of the fixing member 117. As a result, the fixed shaft 1
A gear 114 pivotally supported at the tip of the wire drum system 100 meshes with the gear 104 of the wire drum system 100. After that, the support part 0107 is attached to the upper case 73 II! It is designed to maintain and fix t.

On the other hand, after using the ultrasound diagnostic apparatus, the optical tube attachment/detachment mechanism 70 is removed from the grip part 68 by loosening the rotating ring 160 of the optical tube attachment/detachment mechanism 70.
Further, by unscrewing the pressing member 163 from the mounting portion 44167, the gasket 169 can be removed and cleaned or replaced.

Furthermore, the grip portion 68 is attached to the lower case 71, the middle case 72, . The case is divided into an upper case 73, and the joints of these cases are fitted and screwed together with O-rings 74 and 75 interposed therebetween. Also, middle case 72
A bearing plate 84 is screwed onto the upper end side and extends toward the upper case 73, and the drive system 67 is mounted on this bearing plate 84.

Therefore, the upper case 73 is assembled to the middle case 72 after the drive system 67 is installed. With this configuration, it is easy to assemble the arrangement 9, and the drive system 6
7 is acceptable since the repair is performed only by removing the upper case 73. A head amplifier 174 is attached to the upper end of the lower case 71 by connecting a board 175 to the middle case 72. It is housed in the lower case 71 or below. Therefore, the head amplifier 174 is still being assembled and repaired.

In the above embodiment, the optical viewing tube 6 is configured to be inserted into and removed from the insertion section 2, but the optical viewing tube 6 may be inserted into the insertion section 2 integrally. In addition, in the description of the embodiment, the optical viewing tube 6 is moved 20 degrees from the horizontal position.
It can be inserted facing upward or to the left, and in this state it can be rotated back and forth up and down 15 degrees, but this optical 116 can be rotated 1801 degrees to 360 degrees and can be locked at an appropriate angular position. It is also configured as follows. Further, in the above embodiment, the mirror 32 in the head 3 of the ultrasonic probe 1 is rotated to scan the ultrasonic waves, but the transducer '29 may be directly rotated to scan the ultrasonic waves. In the case of a single & song in which the mirror or flea mover may be oscillating and rotating instead of rotating, the configuration of the above-mentioned example is an example and is not intended to limit the main song. Limitations are limited only to the II rates specified in the claims.

As described above, according to the present invention, the bending mechanism is configured to be able to be divided into a wire drum system for winding the wire and a rotation operation system for rotating the wire drum system, and the rotation is transmitted between the two. The wire drum system is connected by a mechanism, and while only the wire drum system is housed inside the grip, the rotation operation system can be placed outside the grip. The system is attached to the grip separately from the system, which not only makes installation and disassembly repair easier, but also if the grip is configured to be splittable, the bending mechanism that can be attached to the grip Since it is configured to be divisible, it has the advantage that the gripping portion can be easily divided.

[Brief explanation of the drawing]

1 to 17 show an embodiment of the present invention,
Figure 1 is an overall front view of the ultrasonic diagnostic device, Figure 2 is a plan view showing the operating section on the hand side of the ultrasound probe body, and Figure 3 is an enlarged longitudinal section of the tip of the ultrasound probe body in Figure 1. side view,
Fig. 4 is an enlarged longitudinal sectional view showing the vicinity of the curved part and the tip of the insertion part in Fig. 1, Fig. 5 is a sectional view taken along the line A-A in Fig. 4, and Fig. 6 is a sectional view taken along the line B-B in Fig. 4. Cross-sectional view, Figure 7 is a cross-sectional view taken along the line C-C in Figure 4, Figure 8 is an enlarged vertical cross-sectional view of the operating section of the ultrasound probe body, Figure 9 is the +S section of the Kuji Shokurai attachment/detachment device in Figure 8. Fig. 10 is a cross-sectional view of the LJi locking piece in Fig. 8, and Fig. 11 is a cross-sectional view along the line 1)-1) of Fig. 8, @ Fig. 12 t.
Figure 13 is an enlarged vertical cross-sectional view of the bending mechanism in the operation unit, and Figure 14 is a cross-section showing the wire drum system of the bending mechanism. Fig. 15 is a v4 side view showing the curved knob side of the operating section, Fig. 16 is a perspective view showing the usage state of this embodiment, and Fig. 1
Fig. 7 is an explanatory view showing the field of view of the optical viewing tube in the state of use shown in Fig. 16.
...Bending portion, 65...Operation wire, 68...
・Gripping part, 69...bending mechanism, 11)0...
・Wire drum thread, 101... Rotating operation system.

Claims (1)

[Scope of Claims] An ultrasonic probe head and a bending portion for bending the ultrasonic probe head are sequentially connected from the axial direction to the distal end of an elongated insertion portion inserted into a body cavity. Release the gripping part on the proximal side of the insertion capital and release the bay mechanism on the scissor grip 11.
- Fix a part of the 0@saku wire to the rocky shore structure, move the scissors wire to one side inside the decorative insertion part, and fix it to Bay-11, so ail!
The wire is pulled and relaxed by the corner self-ridge structure, and a part of the bay is turned into Haku-1.
KVH is designed to be made into a straight crane shape, and in the intracavity ultrasonic diagnosis WIIT device, the bay arrangement mechanism is fixed to the rear end of a pair of O wires and pulled like a scissors wire. Relaxing wire drum system and this wire drum system @W
It is separated into 1 control system and 1 control system, and the wl trigger wire dot system is placed inside the grip, and the control system is placed on the outside of the grip for operation, and both are removably connected by the 11-@different mechanism. An intrabody cavity ultrasound diagnostic device characterized by: