JPH01146539A - Ultrasonic treatment apparatus - Google Patents

Abstract

PURPOSE:To obtain a good visual field by preventing the attaching of perfusion water to the surface of a lens, by providing a protruding part to the inner surface of the leading end of a sheath and allowing the perfushion water from a water feed port to flow to the leading end surface of an optical sight pipe. CONSTITUTION:A protruding part 15 is provided to the inner surface of the leading end of the sheath 2 of an ultrasonic treatment apparatus 1. When the enlarged prostate is removed, the sheath 2 is inserted in the urethra and the leading end of the sheath 2 is allowed to approach the prostate in the bladder and an operating part 9 is operated to allow an ultrasonic probe 3 to protrude from the sheath 2 so as to press the leading end thereof to the tissue of the affect part. An ultrasonic vibrator 6 is driven to transmit the vibration of the vibrator 6 to the ultrasonic probe 3 through a horn 5 and the tissue of the affected part is emulsified. At this time, perfusion water is sent in the sheath 2 from a water feed port 8 to perform the washing of the tissue of the affected part and a suction pump is driven to discharge the resected tissue to the outside of the body from a suction passage 13. The perfusion water from the water feed port 8 flows to the leading end surface of an optical sight pipe 4 by providing the protruding part 15 to the inner surface of the leading end of the sheath 2 and the bubble caused by cavitation generated at the leading end of the ultrasonic probe 3 can be prevented from attaching to the surface of the lens of the optical sight pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic treatment device that performs prostate resection, stone destruction, etc. using, for example, ultrasonic vibration.

[Conventional technology]

In recent years, ultrasonic treatment devices have been developed as a means to remove enlarged prostate glands and stones. This ultrasonic treatment device places an ultrasonic probe and an optical viewing tube inside a sheath that has a water supply port, and performs ultrasound treatment while supplying irrigation water such as physiological saline from the water supply port into the sheath. be.

[Problem that the invention seeks to solve]

However, in conventional ultrasonic treatment devices, cavitation occurs at the tip of the probe due to ultrasonic vibration, and countless bubbles generated due to this cavitation enter the sheath and adhere to the lens surface of the optical viewing tube. The problem was that it narrowed the field of view.

The present invention was made by focusing on these problems.
An object of the present invention is to provide an ultrasonic treatment device that can prevent cavitation bubbles from adhering to the lens surface of an optical viewing tube and provide a good visual field.

[Means for solving problems]

In order to solve the above problems, the present invention is characterized in that a convex portion is provided on the inner surface of the distal end of the sheath, so that the irrigant from the water supply port flows into the front surface of the distal end of the optical viewing tube. In the present invention, by providing a convex portion on the inner surface of the distal end of the sheath, irrigation water from the water inlet flows into the distal surface of the optical viewing tube, so cavitation bubbles generated at the tip of the ultrasound probe are absorbed into the sheath. can be prevented from penetrating into the lens surface of the optical viewing tube.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention, and this ultrasonic treatment device 1 includes a tubular sheath 2, an ultrasonic probe 3 disposed inside the sheath 2, and an optical viewing tube 4.
and an ultrasonic transducer 6 connected to the rear end of the probe 3 via a horn 5.

The sheath 2 has a water supply port 8 equipped with a water supply cock 7 at the rear end, and irrigation water such as physiological saline is supplied into the sheath 2 from the water supply port 8. Further, at the rear end of the sheath 2, an operating section 9 for moving the ultrasound probe 3 forward and backward is provided. The operating section 9 is composed of a finger rest 10 and a slider 11, and the slider 11 is connected to the finger rest 10.
The tip of the ultrasonic probe 3 is made to protrude from inside the sheath 2 by sliding it toward the side, that is, toward the tip of the sheath 2. A finger ring 12 for hooking the thumb is attached to the slider portion 11.

On the other hand, inside the ultrasonic probe 3, as shown in FIG. 2, a suction path 13 is formed for aspirating excised tissue and the like. This suction path 13 communicates with a suction tube 14 connected to the rear end of the ultrasonic transducer 6, and a suction pump (not shown) is connected to this suction tube 14.

A convex portion 15 is provided on the inner surface of the distal end of the sheath 2. This convex portion 15 allows irrigation water from the water inlet 8 to flow into the distal end surface of the optical viewing tube 4 as shown by the arrow in FIG.
This prevents the particles from entering the interior of the optical tube 4 and adhering to the lens surface of the optical viewing tube 4.

Further, a water tank 18 is connected to the water supply port 8 via a water supply tube 16 and a water supply pump 17 . The perfusion water in the water tank 18 is degassed by a vacuum pump 19, thereby suppressing cavitation from occurring at the tip of the ultrasonic probe 3. Also,
In this embodiment, as shown in FIG. 2, the diameter of the suction path 13 at the tip of the ultrasonic probe 3 is gradually increased toward the tip, so that the static pressure on the surface of the probe tip is lower than the vapor pressure of the perfusion water. This further suppresses the occurrence of cavitation. In FIG. 1, 20 is an AC power supply for applying an AC voltage to the ultrasonic transducer 6, 21 is a foot switch, and 22 is a control circuit.

When using the ultrasonic treatment device 1 configured in this way to remove, for example, an enlarged prostate, first insert the sheath 2 into the urethra and bring the tip of the sheath 2 close to the prostate in the bladder. . Next, the operating section 9 is operated to cause the ultrasound probe 3 to protrude from within the sheath 2, and the tip of the probe 3 is pressed against the affected tissue. Then, in this state, the ultrasonic transducer 6 is driven,
The vibration of the vibrator 6 is transmitted to the ultrasonic probe 3 via the horn 5, and the vibration of the tip of the probe is used to emulsify the affected tissue. At this time, perfusion water is sent into the sheath 2 from the water supply port 8 to wash the affected tissue, and a suction pump (not shown) is driven to remove the excised tissue through the suction path 1.
Excrete it from the body from 3.

As described above, in this embodiment, by providing the convex portion 15 on the inner surface of the distal end of the sheath 2, irrigation water from the water supply port 8 is directed from the distal surface of the optical tube 4 to the temple as shown by the arrow in FIG. As a result, cavitation bubbles generated at the tip of the ultrasonic probe 3 can be prevented from entering the sheath 2 and adhering to the lens surface of the optical viewing tube 4. In addition, water tank 1
Since the perfusion water in the chamber 8 is degassed by the vacuum pump 19, the occurrence of cavitation can be suppressed. Moreover, since the thickness of the ultrasonic probe 3 gradually decreases toward the tip, the static pressure on the surface of the tip of the probe becomes equal to or less than the vapor pressure of the perfusion water, making it possible to further suppress the occurrence of cavitation.

Note that the present invention is not limited to the first embodiment described above. For example, the shape of the convex portion 15 is as shown in FIGS. 4 to 9.
It may be something like the one shown in the figure. Furthermore, as shown in FIGS. 10 and 11, four parts 23 may be provided in the water supply channel within the sheath 2. Furthermore, instead of providing the convex portion 15 on the inner surface of the distal end of the sheath 2, a piezoelectric element 24 may be provided inside the sheath 2 as shown in FIGS. 12 to 15 to apply ultrasonic vibration to the perfusion water. .

Further, in the first embodiment, the perfusion water was degassed using a vacuum pump, but a heat exchanger may be used instead of the vacuum pump. Further, in the first embodiment, the diameter of the suction path 13 is gradually increased toward the tip, but the tip portion of the ultrasonic probe 3 may be gradually narrowed toward the tip, as shown in FIG. 16.

〔Effect of the invention〕

As explained above, in the present invention, a convex portion is provided on the inner surface of the distal end of the sheath so that the irrigation water from the water inlet flows into the distal end face of the optical tube, so that the bubbles of the caviar ion are removed from the optical tube. □ can be prevented from adhering to the lens surface, and the field of view of the optical viewing tube can be expanded.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention.
2 is a cross-sectional view showing the distal end of the sheath, FIG. 3 is a view showing the operation of the same embodiment, and FIGS. 4 to 16 are other embodiments of the present invention. It is a figure which shows an example. DESCRIPTION OF SYMBOLS 1... Ultrasonic treatment device, 2... Sheath, 3... Ultrasonic probe, 4... Optical viewing tube, 6... Ultrasonic transducer, 8... Water supply port, 15...・Protrusion. Applicant Representative Patent Attorney Atsushi Tsuboi Figure 2 Figure 4 Figure 5 Hire Figure 7 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 1, Case Indication Patent Application No. 1983-304642 2, Invention Name of Ultrasonic Therapy Device 3, Relationship with the person making the correction Patent applicant (037) Olympus Optical Industry Co., Ltd. 4, Agent UBE Building 7, 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo;
Contents of amendment (1) The scope of claims is corrected as shown in the attached sheet. (2) "Prostate" as stated in lines 14 to 15 of page 1 of the specification, line 18 of the same page, line 16 of page 5, and line 18 of the same page is referred to as "prostate." correct. (3) Specification page 2, line 2, page 3, line 3, page 3, line 19, page 4, line 17, page 5, line 3, page 6, line 5 2, line 10 of the same page, line 15 of the same page, line 8 of page 7, line 11 of the same page, and line 18 of the same page are referred to as “perfusion water”. correct. (4) "Irrigation liquid" stated in lines 18 to 19 of page 2 of the specification is corrected to "irrigation water."゛(
5) "Probe tip" stated in lines 9 to 10 of page 5 of the specification should be changed to "prevent the static pressure on the surface of the probe tip from becoming less than the vapor pressure of the perfusion water." I am corrected. (6) "Uryode" written in lines 17 to 18 of page 5 of the specification is corrected to "urinary bladder." (7) "The tip of the probe becomes..." written in lines 18 to 19 of page 6 of the specification has been corrected to "The static pressure on the surface of the probe tip is less likely to fall below the vapor pressure of the perfusion water." do. 2. Claims: An ultrasonic treatment device in which an ultrasonic probe and an optical viewing tube are disposed within a sheath having a water supply port, and ultrasonic treatment is performed while supplying perfusion water from the water supply port into the sheath. An ultrasonic treatment device characterized in that a convex portion is provided on the inner surface of the distal end so that each flow of water from the water supply port flows into the distal end surface of the optical viewing tube. Applicant's agent Patent attorney Atsushi Tsuboi

Claims (1)

[Claims] In an ultrasonic treatment device in which an ultrasonic probe and an optical viewing tube are arranged in a sheath having a water inlet, and ultrasonic treatment is performed while supplying perfusion water from the water inlet into the sheath, a convex portion is provided on the inner surface of the distal end of the sheath. An ultrasonic treatment device characterized in that the irrigation water from the water supply port flows into the distal end surface of the optical viewing tube.