JP2003070797A - Ultrasonic sucking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic sucking device which can prevent organism tissue, physical saline, steam by autoclave sterilization, etc., from invading inside a hand piece. SOLUTION: This ultrasonic sucking device comprises the main body, a hand piece 1 which is connected to the main body and has a built-in ultrasonic oscillator 3 to convert electric signal from the main body to mechanical vibration, a probe 6 which is detachably attached to the hand piece 1 and transmits the mechanical vibration from the ultrasonic oscillator to tissue, and a sheath 8 equipped on the tip end of the probe 6 so as to cover the probe 6. The probe 6 and the ultrasonic oscillator 3 have lumens. The hand piece 1 has a mouthpiece 9 on the base end part. A suction lumen connection part 15 is to water- tightly connect the lumens of the probe 6 and the ultrasonic oscillator 3 by an elastic member and is equipped with an elastic third connection tube 21 to absorb eccentricity and gradient of axes of the ultrasonic oscillator 3 and the suction mouthpiece 9.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic suction device for performing treatment using ultrasonic vibration. 2. Description of the Related Art Conventionally, as a general medical technique, an ultrasonic suction apparatus using ultrasonic waves for resection of a liver or suction of a brain tumor has been used. [0003] This ultrasonic suction device includes a handpiece having an apparatus main body, an ultrasonic vibrator connected to the apparatus main body and converting an electric signal from the apparatus main body into mechanical vibration, and a handpiece attached to and detached from the handpiece. It is provided so as to be capable of being provided, and has a large frame composed of a probe whose base end is connected to the distal end of the ultrasonic transducer and a sheath provided at the distal end of the handpiece so as to cover the probe. [0004] This ultrasonic suction device performs emulsification and resection of living tissue by vibrating the distal end of the probe to approach the affected part. Therefore, it is necessary to operate the ultrasonic vibrator at the distal end of the probe. Vibration can be obtained. [0005] A gap is formed between the probe and the sheath from the proximal end to the distal end of the probe, and the gap can be used as a water supply passage to supply physiological saline or the like. [0006] Inside the probe and the ultrasonic vibrator, there is formed a conduit communicating from the tip of the probe to the base end of the ultrasonic vibrator. A suction mouthpiece is provided at the base end of the handpiece, and the base end portion of the ultrasonic vibrator and the suction mouthpiece are watertightly connected by an elastic member such as an O-ring. When treating an affected part with such an ultrasonic suction device, an electric signal is applied to an ultrasonic vibrator provided at a proximal end of the probe to vibrate the distal end of the probe. At the same time, the tip of the vibrating probe is brought close to the affected area to perform resection, emulsification, and the like of the living tissue, and at the same time, physiological saline or the like is supplied through the gap formed between the probe and the sheath, and Cool and clean the affected area. [0008] Further, the suction device is operated as required to suck the physiological tissue or the like used for cleaning the excised living tissue or the affected part from the suction port at the distal end of the probe, and the suction base is passed through the conduit. From outside the body. [0009] By the way, processing accuracy,
Due to variations in assembly, it is difficult to secure coaxiality between the ultrasonic vibrator and the suction base without deviation. In particular, if the suction base is formed of a rigid body, all the O-rings provided between the ultrasonic vibrator and the suction base absorb vibrations generated at the base end of the ultrasonic vibrator. Therefore, in order to suppress heat generation due to internal friction, it is necessary to minimize the allowance for closing the O-ring. However, when the closing margin of the O-ring is reduced in this manner, the elasticity of the O-ring cannot absorb the eccentricity and inclination of the shaft, and the sucked body tissue, physiological saline, or water vapor from the autoclave sterilization causes the handpiece to generate water. There is a problem that it penetrates inside and leads to malfunction of the handpiece. [0010] It is an object of the present invention to provide an ultrasonic suction device capable of preventing a living tissue, a physiological saline solution, or water vapor from autoclave sterilization sucked from the tip of a probe from entering a handpiece. According to the present invention, there is provided a handpiece including an apparatus main body and an ultrasonic vibrator connected to the apparatus main body and configured to convert an electric signal from the apparatus main body into mechanical vibration. A probe that is detachably joined to the handpiece and transmits mechanical vibration from the ultrasonic vibrator to tissue, and a sheath provided at the tip of the handpiece so as to cover the probe. The probe and the ultrasonic vibrator each have a pipe inside, and the base end of the handpiece has a suction base, and each of the ultrasonic vibrator and the suction base is an elastic member. In the ultrasonic suction device having a suction pipe connecting portion that is connected in a watertight manner, the suction pipe connecting portion has an adjusting unit that absorbs eccentricity and inclination of the axis of the ultrasonic vibrator and the suction base. Especially Ultrasonic suction device. According to the present invention, since the adjusting means is provided at the suction pipe connecting portion connecting the ultrasonic vibrator and the suction base, the eccentricity and inclination of the axis of the ultrasonic vibrator and the suction base can be absorbed. it can. 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. The ultrasonic suction device of FIG. An ultrasonic vibrator 3 is provided inside the handpiece 1. A vibration magnifying portion 4 is formed at a distal end portion of the ultrasonic vibrator 3, and a flange portion 5 formed at a base end portion of the vibration magnifying portion 4 is held by the handpiece 1. I have. A probe 6 is detachably provided at the tip of the vibration expanding section 4. For this reason, when an electric signal is applied to the ultrasonic vibrator 3 from an apparatus main body (not shown) to drive the ultrasonic vibrator 3, the distal end of the probe 6 vibrates. The living tissue can be excised and emulsified by approaching the tissue. Further, inside the probe 6, the vibration enlarging section 4 and the ultrasonic vibrator 3, there is formed a pipe 7 communicating from the distal end of the probe 6 to the base end of the ultrasonic vibrator 3. I have. At the distal end of the handpiece 1, a metal or resin sheath 8 for projecting the distal end of the probe 6 coaxially with the probe 6 and covering the outer periphery thereof has a gap between the probe 6 and the probe 6. It is provided so as to be formed and detachable. The gap between the probe 6 and the sheath 8 communicates from the proximal end to the distal end of the probe 6, and this gap is used as a water supply channel to cool the probe 6 from a water supply device (not shown), A physiological saline solution or the like for performing washing of the probe 6 can be supplied to the distal end of the probe 6. At the base end of the handpiece 1, a partition wall 10 integrally formed with a suction base 9 is provided so that the suction base 9 projects from the base end of the handpiece 1. A suction tube (not shown) is connected to the suction base 9. The partition 10 has a rubber member 13 with an outer peripheral portion of the partition 10 on the side of the ultrasonic vibrator 3 on a contact surface 12 protruding from an inner wall surface of a cylinder 11 constituting the handpiece 1. And is screwed from the base end side of the handpiece 1 with a screw 14 so as to be held by the handpiece 1. The ultrasonic vibrator 3 and the partition 10 are connected by a suction pipe connecting portion 15 so that the pipe 7 and the suction base 9 communicate with each other. That is, the physiological saline supplied to the living tissue or the affected part cut off by the ultrasonic vibration of the distal end of the probe 6 is sucked from the distal end of the probe 6 by a suction device (not shown), and The suction tube 9 discharges the suction tube to the outside. The suction line connecting portion 15 is watertight by a first O-ring 17 made of an elastic member on a cylindrical vibrator base end 16 formed to protrude from the base end of the ultrasonic vibrator 3. A first connecting pipe 18 connected to the partition wall 10 and a second connecting pipe 20 watertightly connected to the ultrasonic vibrator 3 side of the partition 10 by a second O-ring 19 made of an elastic member. The first connecting pipe 18 and the second connecting pipe 20 are press-fitted and fixed, respectively, and a third connecting pipe 21 as adjusting means having higher flexibility than the O-rings 17 and 19 respectively. ing. Therefore, the first O-ring 17 and the second O-ring 17
Even if the O-ring 19 is provided with a large closing allowance to connect the vibrator base end 16 and the first connecting pipe 18 and the partition 10 and the second connecting pipe 20 in a watertight manner,
The eccentricity and inclination of the axis between the ultrasonic vibrator 3 and the suction base 9 caused by the processing accuracy, the variation of the assembly, etc.
Since the third connecting pipe 21 which is more flexible than the O-rings 17 and 19 is absorbed, the suction pipe connecting section 15 connects the pipe 7 and the suction base 9 in a watertight manner. be able to. Thus, it is possible to prevent the sucked body tissue, physiological saline, or steam from autoclave sterilization from entering the inside of the handpiece 1. At the base end of the handpiece 1, a high-frequency energizing cord connection pin 22 is screwed. This high-frequency energizing cord connection pin 22 has a sharp tip 2
3 and the sharp tip portion 23 is
Abuts on a connection pin contact electrode 25 provided on an electrode fixing nut 24 embedded in the electrode at a position offset from the axis of the electrode fixing nut 24. The connection pin contact electrode 25 is made of a metal material having elasticity, and a predetermined force acts between the connection pin contact electrode 25 and the sharp tip 23. Therefore, between the sharp tip portion 23 and the connection pin contact electrode 25,
A stable contact resistance can always be ensured. The high-frequency power supply cord connection pin 22
The suction tube and the high-frequency power supply cord can be easily connected to the base end of the handpiece 1 at a distance from the suction base 9, so that the suction tube and the high-frequency power supply cord interfere with the operation of the handpiece 1. Can be prevented. Further, since the electrode fixing nut 24 is provided in an empty space of the partition 10, the handpiece 1 can be downsized. A connection pin retainer 26 is provided on the outer peripheral portion of the high-frequency power supply cord connection pin 22 and is fixed to the base end of the handpiece 1 by screwing. This allows
Since the handpiece 1 and the connection pin holder 26 form a double nut with respect to the high-frequency energizing cord connection pin 22, it is possible to prevent the high-frequency energizing cord connection pin 22 from being loosened with respect to the handpiece 1. it can. As shown in FIG. 2, a first electrode 27A and a second electrode 27B are attached to the surface of the partition 10 on the side of the ultrasonic vibrator 3, and the first electrode 27A
Has a bridge shape extending in the opposite direction to the central axis X. As shown in FIG. 3, two electrodes 27C are arranged on one surface of the partition wall 10 on the base end side of the handpiece 1 on one side with respect to the central axis X, and one of the electrodes 27C is a bridge. The one end of the first electrode 27A extending in the shape of a circle and the other end are electrically connected to the second electrode 27B.
A signal cable 28 is connected to each of the electrodes 27C from the handpiece 1 side of the partition 10. As described above, since the signal cable 28 is connected on one side with respect to the central axis X, the axial length of the handpiece 1 required for connection can be reduced, and the handpiece 1 can be connected. 1 can be reduced in size. The other end of the first electrode 27A and the second electrode 27B attached to the surface of the partition 10 on the side of the ultrasonic vibrator 3 are connected to the ultrasonic vibrator 3 by electric wires, respectively. An electric signal is applied to the ultrasonic vibrator 3 from the apparatus main body which is not used. A pair of electrodes 27C provided on the side of the handpiece 1 of the partition 10 is separated by a partition portion 29 provided between the electrodes, and as shown in FIG. The connection space of the signal cable 28 formed on the side is filled with the filler 30 after the connection. For this reason, the inside of the handpiece 1 is completely shielded from the outside, so that steam from the autoclave sterilization can be prevented from entering the inside of the handpiece 1. FIG. 4 shows a second embodiment of the present invention. This embodiment is a modification of the first embodiment in which the base end portion 16 of the vibrator and the first connecting pipe 18 are connected in a watertight manner. A jacket 31 made of a low friction member such as tetrafluoroethylene resin is provided on the transducer base end 16 of the ultrasonic transducer 3.
The jacket 31 has a fourth connecting pipe 3 attached thereto.
2 is externally fitted. Then, the fourth connecting pipe 32
The outer periphery of the jacket 31 and the fourth connecting pipe 3
2, a seal ring 33 is provided for accommodating and supporting radially inward. The jacket 31
Has an opening 34 on the handpiece 1 side, and a fourth O-ring 35 is embedded in the opening 34. The second connecting pipe 32, the jacket 31, the seal ring 33, the second connecting pipe 20, and the third connecting pipe 21 constitute a second suction pipe connecting section 15A. As described above, the ultrasonic transducer 3 and the suction base 9 are connected to the third connecting pipe 21 made of a flexible member.
Since the connection is made by the second suction pipe connecting portion 15A having the above, the eccentricity and inclination of the axis between the ultrasonic vibrator 3 and the suction base 9 can be absorbed similarly to the first embodiment. Thus, it is possible to prevent the sucked body tissue, physiological saline, or steam from autoclave sterilization from entering the inside of the handpiece 1. In the autoclave sterilization process, after the inside of the sterilizer chamber is evacuated, high-pressure steam is fed in. When the high-pressure steam is blown, the pressure forms the opening 34 of the jacket 31. Exterior wall 3
6 and the inner wall 37 are pushed radially outward and radially inward, respectively, so that the jacket 31 is pressed against the outer peripheral surface of the transducer base end 16 and the inner peripheral surface of the fourth connecting pipe 32 with high pressure. Become. Thus, it is possible to more reliably prevent the steam from the autoclave sterilization from entering the inside of the handpiece 1. FIG. 5 shows a third embodiment of the present invention. This embodiment is a modified example of the suction line connecting portion 15 of the first embodiment. The suction line connecting portion 15B of this embodiment is different from the first connecting line 18 of the first embodiment. In place of the third connecting pipe 21, a fifth connecting pipe 38 made of an elastic member is used. The fifth connecting pipe 38 has a plurality of convex lips 39 protruding from the inner peripheral surface thereof at one end thereof along the circumferential direction. A bellows portion 40 is formed. The vibrator base end 16 is fitted into one end of the fifth connecting pipe 38, and the other end is press-fitted and fixed to the second connecting pipe 20. A third suction pipe connecting portion 15B for connecting the ultrasonic transducer 3 and the suction base 9 in a watertight manner is formed by the connecting pipe 38 and the second connecting pipe 20. Therefore, the ultrasonic vibrator 3 is formed by the thin bellows 40 formed in the fifth connecting pipe 38.
Since the eccentricity and inclination of the axis between the handpiece 1 and the suction base 9 are absorbed, it is possible to prevent the sucked living tissue, physiological saline, or steam from autoclave sterilization from entering the inside of the handpiece 1. Alternatively, since the number of parts can be reduced, the configuration of the apparatus can be simplified. According to each of the above-described embodiments, the following configuration is obtained. (Supplementary Note 1) A handpiece having an apparatus main body, an ultrasonic vibrator connected to the apparatus main body and converting an electric signal from the apparatus main body into mechanical vibration inside, and detachably attached to the handpiece. A probe for transmitting mechanical vibration from the ultrasonic transducer to the tissue that is joined,
A sheath provided at the distal end of the handpiece so as to cover the probe; the probe and the ultrasonic vibrator have a pipeline inside; and a suction base is provided at a base end of the handpiece. And in the ultrasonic suction device having a suction pipe connecting portion for connecting the ultrasonic vibrator and each pipe of the suction base with an elastic member in a watertight manner, the suction pipe connecting portion includes the ultrasonic vibrator and the ultrasonic vibrator. An ultrasonic suction device comprising an adjusting means for absorbing eccentricity and inclination of a shaft of a suction base. (Supplementary Note 2) The ultrasonic suction apparatus according to Supplementary Note 1, wherein at least a part of the connecting portion of the suction conduit is formed of a flexible member having elasticity. (Supplementary note 3) The ultrasonic suction apparatus according to supplementary note 2, wherein the flexible member has equal or more flexibility than the elastic member. (Supplementary Note 4) At least one convex lip is provided on the inner periphery of one end of the flexible member, and the convex lip is water-tightly connected to the base end of the ultrasonic vibrator. The ultrasonic suction device according to claim 2 or 3, wherein the portion has a bellows portion, and the adjusting means is the bellows portion. According to the present invention, the living tissue cut at the distal end of the probe, the physiological saline supplied to the affected part,
Alternatively, since steam from autoclave sterilization can be prevented from entering the inside of the handpiece, malfunction of the device can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional side view of an ultrasonic suction device according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along the line AA of FIG. 1; FIG. 3 is a sectional view taken along the line BB of FIG. 1; FIG. 4 is a longitudinal sectional side view of an ultrasonic suction device according to a second embodiment of the present invention. FIG. 5 is a vertical sectional side view of an ultrasonic suction device according to a third embodiment of the present invention. [Description of Signs] 1 ... Handpiece 3 ... Ultrasonic vibrator 6 ... Probe 7 ... Pipeline 8 ... Sheath 9 ... Suction base 10 ... Partition wall 15 ... Suction line connecting portion 15A ... Second suction line connecting portion 15B .., A third suction pipe connecting portion 16, a transducer base end portion 18, a first connecting pipe 20, a second connecting pipe 21, a third connecting pipe 32, a fourth connecting pipe 38, and a fifth connecting pipe. Tube 39: convex lip 40: bellows

Claims (1)

Claims: 1. A handpiece including an apparatus main body, an ultrasonic vibrator connected to the apparatus main body, and converting an electric signal from the apparatus main body into mechanical vibration, and the handpiece. A probe that is detachably joined to the probe for transmitting mechanical vibration from the ultrasonic transducer to the tissue, and a sheath provided at the tip of the handpiece so as to cover the probe, The ultrasonic transducer has a pipe inside,
An ultrasonic suction device having a suction mouth at a base end portion of the handpiece and having a suction pipe connecting portion for connecting the ultrasonic vibrator and each pipe of the suction mouth with an elastic member in a watertight manner. An ultrasonic suction apparatus characterized in that the conduit connecting portion has an adjusting means for absorbing the eccentricity and inclination of the axis of the ultrasonic transducer and the axis of the suction base.