JPH03139344A - Hand piece for ultrasonic operation - Google Patents

Abstract

PURPOSE:To make a such substance hardly stopped up in a branched hole of a vacuum port by inclining a central axial line of a vacuum pressure controlling pipe to a central axial line of the vacuum port at a smaller angle than 90 deg. toward the upstream side of the vacuum direction of the vacuum port. CONSTITUTION:An ultrasonic oscillator 6 and a horn part 7 for amplifying the ultrasonic vibration from the oscillator 6 are provided in a hand piece main body 1 and a vacuum port 9 is formed on the horn part 7. A vacuum pressure controlling part 12 furnished with a vacuum pressure controlling hole 11 which is communicated with the vacuum port 9 and controls a vacuum pressure from the vacuum port 9 by controlling an amt. of leakage is also provided. In addition, in the main body, a vacuum pressure controlling pipe 12 communicated with a branched hole 9a branched from the vacuum port 9 and perforated to the vacuum pressure controlling hole 11 is provided. The central axial line or of this pipe 12 is inclined to the central axial line Os of the vacuum port 9 at a smaller angle than 90 deg. toward the upstream side of the vacuum direction of the vacuum port 9. As a result, a suck substance is hardly stopped up during vacuum operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an ultrasonic surgery equipped with a suction pressure adjustment unit that adjusts the suction pressure when biological tissues and stones are crushed by ultrasonic vibration and then removed by suction. Regarding improvements to handpieces for use in handpieces.

[Prior Art] In general, an ultrasonic surgical handpiece includes an ultrasonic transducer inside the handpiece body and ultrasonic vibrations from the ultrasonic transducer, as disclosed in Japanese Patent Application Laid-Open No. 61-279239. Each horn section for amplification is arranged,
With the tip of the vibration transmission member connected to this horn part touching the living tissue, stone, etc., the ultrasonic vibrations from the ultrasonic transducer are passed through the horn part and the vibration transmission member in order to remove the living tissue or stone. There is a known structure in which the vibrating energy is used to cut or crush the material. in this case,
The vibration transmission member is formed by a tube body, and a suction hole that communicates with the inside of this tube body is formed in the main part. This makes it easier to perform surgical operations to remove or crush living tissue, stones, etc.

Further, a suction pressure adjustment tube having a suction pressure adjustment hole for adjusting the suction pressure from the suction hole is disposed outside the handpiece body. One end of a suction pressure adjustment tube disposed outside the handpiece body is connected to this suction pressure adjustment hole. The other end of this suction pressure adjusting tube is connected to a branch port of a suction hole mouthpiece of a suction hole in the 11-inch handpiece body which is protruded outward from the distal end of the handpiece body.

Then, during suction work using the suction hole in the handpiece body, fine adjustment of the suction pressure by the suction hole is made by adjusting the opening area of the suction pressure 2I node hole with fingers or the like to adjust the amount of leakage from the suction hole. It is now possible to do this.

[Problems to be Solved by the Invention] In the above-mentioned conventional configuration, the connecting end of the suction pressure adjustment tube with the branch port of the suction hole cap is such that the central axis of this connecting end is relative to the central axis of the suction hole. Since the suction hole was connected to the branch port of the suction hole cap at a substantially right angle, there was a problem in that the branch port of the suction hole cap was easily clogged with suction material during suction operation using the suction hole in the handpiece body. Furthermore, the suction pressure adjustment tube that connects the branch port of the suction hole base at the end of the handpiece body and the suction pressure adjustment hole is often arranged in a bent state outside the hand screw body, so it is difficult to clean. There was a difficult problem. Furthermore, since the suction pressure adjustment tube is exposed on the outside of the handpiece body, there is a risk that the suction pressure adjustment tube may interfere with the operation of the handpiece body.

This invention was made in view of the above-mentioned circumstances, and aims to provide an 8U ultrasonic surgical nodpiece that is not easily clogged with aspirate during suction work, is easy to clean, and has excellent operability. This is the purpose.

[Means for Solving the Problems] The present invention provides a suction pressure adjustment tube in the handpiece body that is communicated with a branch port branched from the suction hole and penetrates to the suction pressure adjustment hole of the suction pressure adjustment section. The central axis of the suction pressure adjusting tube is inclined toward the upstream side of the suction direction of the suction hole at an angle smaller than 90° with respect to the central axis of the suction hole.

[Function] Set the center axis of the suction pressure adjustment tube at 90 degrees with respect to the center axis of the suction hole.
By arranging the suction hole so that it is tilted toward the upstream side in the suction direction at an angle smaller than By arranging the adjustment tube in a substantially straight pipe state, cleaning work is facilitated, and by arranging the suction pressure adjustment pipe within the handpiece body, it is possible to easily remove the suction pressure from the outside of the handpiece body. This is intended to improve operability compared to the case where the controller is installed.

[Example] A first example of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows a schematic configuration of an ultrasonic surgical handpiece, and 1 is a handpiece body. An ultrasonic probe 3 is disposed inside a cover 2 of the handpiece body 1. The ultrasonic probe 3 includes an ultrasonic transducer section 6 in which a piezoelectric cable 4 made of PZT or the like and an electrode 5 are laminated, and a horn section 7 that amplifies the ultrasonic vibrations generated by the ultrasonic transducer section 6. A vibration transmitting member 8 formed of a tubular body is connected to the tip of the horn portion 7, respectively.

Further, in the ultrasonic transducer part 6 and the horn part 7 of the ultrasonic probe 3, a suction hole 9 communicating with the inside of the tube 8a of the vibration transmitting member 8 is penetrated back and forth along the central axis of the ultrasonic probe 3. formed in the state. In this case, the horn part 7
A branch port 9a branching from the suction hole 9 is formed in the suction hole 9. Note that the rear end of this suction hole 9 is connected to the handpiece body 1.
It is connected to an external suction device via a connecting pipe that projects outward from the distal end of the tube.

Further, a suction pressure adjusting member 10 is disposed on the outer peripheral surface of the cover 2 of the handpiece body 1. A suction pressure adjustment hole 11 for adjusting the suction pressure from the suction hole 9 is formed in this suction pressure adjustment part (10th).

The upper surface opening of this suction pressure adjustment hole 11 is formed by an elongated hole 11a extending long and thin in the front-rear direction. The elongated hole 11a can be closed as desired by the user's fingers or the like.

Furthermore, a suction pressure adjustment tube 12 is disposed within the handpiece body 1. The inner end of this suction pressure adjustment tube 12 is connected to the branch port 9a of the horn part 7, as shown in FIG. connected. In this case, the suction pressure adjustment tube 1
2's central axis OT is 90 degrees with respect to the central axis O5 of the suction hole 9.
It is arranged so as to be inclined toward the upstream side in the suction direction of the suction hole 9 at an angle θ that is smaller than °.

Next, the operation of the above configuration will be explained.

First, when using the handpiece/X handpiece body 1
During suction work using the suction hole 9 in the suction hole 9, the opening area of the elongated hole 11a of the suction pressure adjustment hole 11 is adjusted by one week using fingers or the like to adjust the amount of leakage from the suction hole 9.
Make fine adjustments to the suction pressure. In this case, the central axis OT of the suction pressure adjustment tube 12 is arranged so as to be inclined toward the upstream side in the suction direction of the suction hole 9 at an angle θ smaller than 90° with respect to the central axis O5 of the suction hole 9. During the suction operation, it is possible to prevent the aspirate sucked from the upstream side of the suction hole 9 through the suction hole 9 from entering the suction pressure adjustment tube 12 from the branch port 9a of the suction hole 9. Therefore, during the suction operation, the suction material sucked from the upstream side of the suction hole 9 through the suction hole 9 is transferred to the branch port 9a of the suction hole 9.
can prevent clogging.

Furthermore, since the suction pressure adjusting tube 12 can be disposed in a substantially straight state within the handpiece body 1, when cleaning the handpiece body 1, the suction hole 9 is inserted from the rear end of the suction hole 9.
The suction pressure adjustment tube 12 can be smoothly adjusted by simply letting cleaning water flow into the suction pressure adjustment tube 12.
The inside of this suction pressure adjustment tube 12 can be cleaned by flowing cleaning water into the suction pressure adjusting tube 12. Therefore, cleaning work can be made easier than in the past.

In addition, since the suction pressure adjustment tube 12 is disposed inside the handpiece body 1, the suction pressure adjustment tube 12 is disposed in an exposed state on the outside of the handpiece body 1. There is no fear that this suction pressure 82J joint tube 12 will interfere with the operation, and the operability can be improved and the overall size of the handpiece body 1 can be reduced.

Note that this invention is not limited to the above embodiments. For example, as in the second embodiment shown in FIG. 3, a suction pressure adjustment part 21 is formed in which the suction pressure adjustment member 10 of the first embodiment is integrally embedded in the cover 2 of the handpiece body 1,
A suction pressure adjustment hole 11 that adjusts the suction pressure from the suction hole 9 for one round is formed in this suction pressure adjustment part 21, and a long hole 11a that is elongated in the front and back direction is formed in the upper opening of this suction pressure adjustment hole 11. It is also possible to have a configuration in which the Of course, this embodiment can also obtain the same effects as the first embodiment, and in particular, the cover 2 of the handpiece body 1
Since there are no extra irregularities on the outer peripheral surface of the handpiece body 1, the appearance and operability of the handpiece body 1 can be improved.

In addition, as in the third embodiment shown in FIG. 4, the cross-sectional area of the suction pressure adjustment tube 12 of the first embodiment is gradually increased on the cover 2 side of the handpiece body 1 compared to the main part 7 side. It may be formed as follows. In this case, during the suction operation, it is more effective to ensure that the aspirate sucked from the upstream side of the suction hole 9 through the suction hole 9 enters the suction pressure adjustment pipe 12 from the branch port 9a of the suction hole 9. can be prevented.

Furthermore, it goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] According to the present invention, a suction pressure adjustment tube is provided in the handpiece body, which communicates with the branch port branched from the suction hole, and extends through the suction pressure adjustment hole of the suction pressure adjustment section. Since the center axis of the adjustment tube is inclined toward the upstream side of the suction direction of the suction hole at an angle smaller than 90 degrees with respect to the center axis of the suction hole, it is difficult to get clogged with aspirated material during suction work. Moreover, cleaning work is easy and operability can be improved.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a vertical cross-sectional view showing the schematic configuration of an ultrasonic surgical handpiece, and FIG. 2 is a diagram showing the arrangement of a suction pressure adjustment tube. FIG. 3 is a vertical cross-sectional view of the main part of the handpiece showing the second embodiment of the present invention, and FIG. 4 is a vertical cross-sectional view of the handpiece according to the third embodiment of the present invention. FIG. 3 is a vertical cross-sectional view of main parts showing an arrangement state. 1... Handpiece body, 6... Ultrasonic transducer section,
7... Horn part, 9... Suction hole, 9a... Branch port, 10... Suction pressure adjustment member, 11... Suction pressure adjustment hole, 12... Suction pressure adjustment pipe, 21. ...Suction pressure adjustment section.

Claims (1)

[Claims] An ultrasonic transducer and a horn section for amplifying ultrasonic vibrations from the ultrasonic transducer are respectively disposed inside the handpiece body, and a suction hole is formed in the horn section, and a suction hole is formed on the outside of the handpiece body. In the ultrasonic surgical handpiece, the ultrasonic surgical handpiece is provided with a suction pressure adjustment section having a suction pressure adjustment hole that communicates with the suction hole and adjusts the suction pressure from the suction hole by adjusting the amount of leakage. A suction pressure adjustment tube that communicates with a branch port branched from the suction hole and passes through to the suction pressure adjustment hole of the suction pressure adjustment section is provided in the handpiece body, and the center axis of this suction pressure adjustment tube is connected to the suction pressure adjustment tube. An ultrasonic surgical handpiece, characterized in that the handpiece is disposed so as to be inclined toward the upstream side in the suction direction of the suction hole at an angle smaller than 90 degrees with respect to the central axis of the hole.