JPH0586306U - Ultrasonic vibration transmission member for treatment - Google Patents

Abstract

(57) [Summary] [Purpose] An ultrasonic vibration transmission member for treatment that transmits ultrasonic vibration and crushes biological tissue, minimizes the contact area and friction with the affected tissue, and cuts into it during surgery. It is an object of the present invention to provide an ultrasonic vibration transmission member for treatment, which prevents damage such as burns or the like that disappears or damages normal tissue. [Structure] A step is formed so that the outer wall width in the cross-sectional direction of the scalpel tip 3a on the tissue crushing side is larger than the outer wall width on the transducer side. A tapered female body 3b is formed which gradually increases toward the transducer side, and the treatment ultrasonic vibration transmission member 3 is formed as a whole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a treatment ultrasonic vibration transmission member of an ultrasonic surgical instrument that crushes affected tissue by ultrasonic vibration.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, an ultrasonic surgical instrument for crushing an affected tissue by ultrasonic vibration has been used for surgery for removing an affected area such as a cataract, a tumor, or a stone.

FIG. 11 shows the configuration of an ultrasonic surgical instrument, which has an apparatus main body 101 and a handpiece 102. The handpiece 102 includes a vibrator 103 and a treatment ultrasonic vibration transmission member (hereinafter It is composed of 3).

FIG. 6, FIG. 8 and FIG. 10 show the shape of a conventional scalpel, and the shape of the scalpel that transmits ultrasonic vibrations to the affected tissue follows the tip. It is generally a cone-shaped one that becomes thin and a knife-shaped one.

Here, in the scalpel 3 shown in FIG. 6, ultrasonic vibrations are transmitted to the scalpel 3 from a vibrator, and the edge portion of the scalpel 3 crushes the affected tissue. A sleeve 4 is provided around the knife 3, and a cleaning solution such as saline is discharged through a cleaning solution injection passage 2 provided between the sleeve 4 and the knife 3, and ultrasonic vibrations supplied to the knife 3 are generated. The crushed tissue is affected by. Further, through the suction passage 1 provided in the scalpel 3, the crushed pieces of the affected tissue and the washing liquid are sucked and discharged. Here, the suction passage 1 is connected to the suction port 5 provided at the tail portion of the handpiece 102 to discharge the crushed pieces and the cleaning liquid to the outside.

Next, the knife 3 shown in FIG. 8 is a pillar-shaped knife having a substantially triangular cross section, and supplies ultrasonic vibrations in the longitudinal direction of the knife to crush the affected tissue as if a saw cuts wood. Is.

Further, the scalpel 3 shown in FIG. 10 has a slanted end face mainly for the treatment of cataract.

[0008]

[Problems to be solved by the device]

 However, according to the configuration of the prior art, as shown in FIGS. 7 and 9, the contact area between the scalpel 3 and the affected tissue 7 (female contact portion 6) is large, so that crushing of the affected tissue is promoted, Due to the tightening caused by contraction of the cleaning solution, the cleaning liquid will not spread, the knife will not come off, and excessive force will be applied when trying to forcibly pull it out, which may damage the normal tissue or break the blood vessels. Furthermore, there was a problem that the tissue was burned by friction between the affected tissue and the side of the scalpel, the tissue was deformed and discolored, and postoperative recovery was delayed.

Therefore, an object of the present invention is to provide an ultrasonic vibration transmission member for treatment that prevents a scalpel from being stuck in an affected tissue during surgery and from being burned to normal tissue during surgery.

[0010]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention firstly relates to a tubular ultrasonic vibration transmitting member for treatment that transmits ultrasonic vibration and crushes living tissue, and a cross-sectional view of the tip end portion on the crushed side of the affected tissue. It is characterized in that the outer wall width in the direction is larger than the outer wall width on the transducer side. Secondly, the outer wall width in the transverse direction of the tip part on the crushed side of the affected tissue is The third feature is that a step is formed so as to be larger than the outer wall width on the oscillator side. Thirdly, the outer wall width in the cross-sectional direction of the tip end on the crushed side of the affected tissue is A step is formed so that it is larger than the outer wall width on the child side, and the outer wall width in the cross-sectional direction is formed into a pipe shape with a taper shape that gradually increases from the root of the step toward the vibrator side. The fourth is the transmission of ultrasonic vibrations. In the ultrasonic vibration transmitting member for treatment that crushes biological tissue at the bottom surface in the longitudinal direction, the width in the direction perpendicular to the ultrasonic vibration direction of the bottom surface, which is the tissue crushing side of the affected area, is greater than the width of the top surface. It is characterized in that it is formed to be large.

[0011]

[Action]

 In the treatment ultrasonic vibration transmitting member of the present invention, the contact between the treatment ultrasonic vibration transmitting member and the affected tissue is only at the tip of the treatment ultrasonic vibration transmitting member, and the contact area is reduced to tighten the living tissue or the like. And friction is also reduced. That is, it is possible to prevent the treatment ultrasonic vibration transmission member from coming off during the operation, prevent the occurrence of burns due to frictional heat, and perform highly safe operation.

[0012]

【Example】

 An embodiment of the present invention will be described with reference to the drawings.

As shown in the perspective view of FIG. 1A and the sectional view of FIG. 1B, the tip of the handpiece according to the first embodiment of the present invention includes a suction path 1 and a cleaning liquid injection path 2. , A female 3 and a sleeve 4.

The feature of the present invention is that the scalpel 3 has a substantially ring-shaped treatment ultrasonic vibration transmission member tip portion (hereinafter referred to as “female tip portion”) 3 a that contacts the affected portion and crushes the affected tissue. The treatment ultrasonic vibration transmitting member main body (hereinafter referred to as “female main body”) 3b has a shape in contact with the female main body 3b, and the connecting portion of the female main body 3b with the female front end 3a is the female front end. The outer diameter of the female body 3b is smaller than that of the female body 3a, and the outer diameter of the female body 3b is gradually increased toward the oscillator, which is the other end, and has a step portion for crushing the affected tissue and a tapered portion. The tubular portion forms the knife 3 as a whole.

The use state of the knife 3 according to this embodiment will be described. As shown in FIG. 2, the crush width of the diseased tissue 7 is determined by the outer width of the scalpel tip 3a described above, and thereafter, the crush width is maintained at this width. Done.

Even when the affected part is deeply cut, the female contact portion 6 that comes into contact with the affected tissue 7 is only the female tip 3a, and the contact area on the side surface is smaller than in the conventional case. It is possible to greatly reduce the contact area and friction with.

Further, the scalpel 3 has a suction passage 1 for sucking a cleaning liquid such as physiological saline supplied to lubricate the crushed pieces of the affected tissue 7 to the outside.

Further, a sleeve 4 is provided on the outside of the scalpel 3, and the suction passage 1 is connected to a suction port 5 provided at the tail portion of the handpiece 102, and discharges the affected tissue fragment and the washing liquid to the outside.

The sleeve 4 forms a cleaning liquid injection path 2 between an inner wall and the knife 3 and supplies a crushing portion with a cleaning liquid for crushing for lubrication. Here, since the scalpel 3 has a tapered shape, it is possible to secure a wide cleaning liquid injection path 2 and supply a sufficient cleaning liquid to the affected area.

As described above, since the contact area between the scalpel 3 and the affected tissue 7 is reduced, the tightening due to the contraction of the living tissue is reduced and the scalpel does not become detached during the operation.

Further, the friction with the affected tissue 7 is reduced, and the circulation route of the washing liquid is sufficiently secured to obtain the cooling effect, so that the frictional heat generated between the scalpel 3 and the affected tissue 7 is minimized. Can be suppressed to. That is, it is possible to prevent burns due to frictional heat given to normal tissue adjacent to the affected tissue 7 by crushing the affected tissue 7.

It should be noted that although the shape of the distal end of the scalpel is made stepwise in the above-mentioned embodiment, the shape is not limited to that of the above-mentioned embodiment, and for example, as the outer diameter of the crushed tissue of the affected part approaches the transducer side. The same effect can be obtained by forming a tubular taper structure that gradually becomes smaller.

Next, a scalpel 3 shown in FIG. 3, which is a second embodiment of the present invention, is a columnar scalpel having a substantially triangular cross section, and has a bottom face having a scalpel tip 3a, which extends in the longitudinal direction of the scalpel 3. The sonic vibration is supplied to crush the affected tissue 7 as if a saw cuts wood.

Also in this case, as shown in FIG. 4, similarly to the first embodiment, the diseased tissue 7 is cut and advanced with the width in the direction perpendicular to the vibration direction of the knife tip portion 3a, and the knife contact portion is contacted. Since 6 is only the knife tip 3a, the contact area and friction between the knife 3 and the affected tissue 7 are reduced, and the same effect as in Example 1 is obtained.

Further, the scalpel shown in FIG. 5, which is the third embodiment, has substantially the same structure as the scalpel according to the first embodiment, and is used for surgery such as cataract with the knife tip 3a having an acute angle. It is three.

By reducing the contact area and friction, it is possible to crush the affected tissue of the crystalline lens that is easy to move. Furthermore, it is possible to reduce the generation of bubbles due to cavitation and obtain a sufficient view of the crushed portion.

[0027]

[Effect of the device]

 As described above, according to the scalpel of the present invention, the contact area between the scalpel and the affected tissue is reduced, so that tightening due to contraction of living tissue is reduced, and the scalpel does not become stuck during surgery. It is possible to crush the affected tissue safely without applying excessive force to pull out the scalpel and damaging normal tissue or breaking blood vessels.

Furthermore, when the sleeve is provided around and the cleaning solution is supplied, friction with the affected tissue is reduced, and a sufficient circulation route of the cleaning solution can be secured to obtain a cooling effect, so that the cleaning solution is provided between the scalpel and the affected tissue. The generated frictional heat can be minimized, and burns due to the frictional heat applied to the adjacent normal tissues can be prevented, which enables highly safe surgery.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention, (a)
[FIG. 3] is a perspective view showing a first embodiment of the present invention, and (b) is a sectional view showing the first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an operating state of the first embodiment of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an operating state of the second embodiment of the present invention.

FIG. 5 is a perspective view showing a third embodiment of the present invention.

FIG. 6 is a perspective view of a conventional example corresponding to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing an operation state of a conventional example corresponding to the first embodiment of the present invention.

FIG. 8 is a perspective view of a conventional example corresponding to the second embodiment of the present invention.

FIG. 9 is an explanatory diagram showing an operation state of a conventional example corresponding to the second embodiment of the present invention.

FIG. 10 is a perspective view of a conventional example corresponding to the third embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a configuration of an ultrasonic surgical instrument.

[Explanation of symbols]

 1 Suction Path 2 Cleaning Liquid Injection Path 3 Ultrasonic Vibration Transmission Member for Treatment 4 Sleeve 5 Suction Port 6 Female (Ultrasonic Vibration Transmission Member for Treatment) Contact Area 7 Tissue Affected 3a Female Tip (Ultrasonic Vibration Transmission Member for Treatment Tip) ) 3b Female main body (treatment ultrasonic vibration transmission member main body) 101 Device main body 102 Handpiece 103 Transducer

Claims (4)

[Scope of utility model registration request] 1. A tubular treatment ultrasonic vibration transmitting member for transmitting ultrasonic vibration to crush biological tissue, wherein an outer wall width in a cross-sectional direction of a distal end portion on the tissue crushing side of an affected area is:
A treatment ultrasonic vibration transmission member, characterized in that it is formed so as to be larger than the outer wall width on the oscillator side. 2. The stepped portion is formed so that the outer wall width in the cross-sectional direction of the distal end portion on the crushed tissue side of the affected area is larger than the outer wall width on the transducer side. Ultrasonic vibration transmission member for treatment. 3. The stepped portion is formed such that the outer wall width in the cross-sectional direction of the tip portion, which is the crushed tissue side of the affected area, is larger than the outer wall width on the transducer side, and the outer wall width in the cross-sectional direction is from the root of the stepped portion. The ultrasonic vibration transmission member for treatment according to claim 1, wherein the ultrasonic vibration transmission member for treatment has a tubular shape having a tapered shape that gradually increases toward the oscillator side. 4. A treatment ultrasonic vibration transmission member for transmitting ultrasonic vibrations and crushing biological tissue at a bottom surface in a longitudinal direction, wherein the ultrasonic vibration transmission member has a vertical direction with respect to the ultrasonic vibration direction of the bottom surface on the tissue crushing side. Is formed so as to have a width larger than the width of the upper surface portion.