JP4338260B2 - Ultrasonic surgical device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultrasonic surgical apparatus, and more particularly to an apparatus for performing an ultrasonic operation on a tissue by two action parts that open and close.
[0002]
[Prior art]
An ultrasonic surgical apparatus is an apparatus for performing tissue incision, hemostasis, and the like using ultrasonic vibration. In particular, compared with hemostasis using an electrosurgical device, hemostasis technology using ultrasonic waves that hardly generates smoke or odor is becoming widespread. For example, in the conventional device disclosed in JP-A-8-505801, by applying ultrasonic vibration while sandwiching a tissue between a surgical tool that vibrates ultrasonically and a blade (non-vibrating member) facing the surgical tool, Hemostasis coagulation has been done.
[0003]
[Problems to be solved by the invention]
However, the conventional apparatus is for performing ultrasonic surgery using a laparoscope and has a very long overall length and a special shape. Therefore, there is a problem that operability is poor and not suitable for performing general ultrasonic surgery. In addition, there is a problem that the burden on the operator is heavy due to the mechanism for reliably incising a hard tissue. There is a demand for a structure that can securely hold the tissue even with a small grip strength. Furthermore, improvement of the effect of incision and hemostasis is desired.
[0004]
The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide an ultrasonic surgical apparatus with good operability.
[0005]
Another object of the present invention is to provide an ultrasonic surgical apparatus capable of enhancing the effects of tissue incision and hemostasis.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes first and second assemblies intersecting each other at a fulcrum, and the front side of the fulcrum in the first and second assemblies is an action part, and a tip portion of each action part The tissue is sandwiched between the first and second assemblies, and the rear side of the fulcrum in the first and second assemblies is an operation portion. The operation portions are opened and closed by opening and closing each operation portion, and at least one of the first and second assemblies is An ultrasonic vibrator is included, and the ultrasonic vibration is transmitted to the tip portion of the assembly.
[0007]
According to the said structure, a structure | tissue is pinched | interposed by the front-end | tip part of a 1st and 2nd assembly, and ultrasonic vibration is transmitted with respect to the structure | tissue from both sides or one side, and ultrasonic surgery is performed by this. Here, the concept of ultrasonic surgery includes tissue incision, cutting, emulsification, coagulation, hemostasis, and the like.
[0008]
According to the present invention, ultrasonic surgery can be performed by sandwiching a tissue with an arbitrary pressure such as scissors or pliers using two assemblies crossed at a fulcrum. For example, even with a weak gripping force, a sufficient clamping force can be exhibited, and fine work is easy. That is, ultrasonic surgery can be performed with the same operability as scissors used daily.
[0009]
Preferably, the ultrasonic transducer is provided in the operation unit, and at least the entire operation unit is covered with a case. Thereby, it is possible to prevent unnecessary transmission of ultrasonic vibration to the holding hand or the like.
[0010]
Preferably, the fulcrum is set at a position of a node of ultrasonic vibration. According to this configuration, vibration loss can be reduced.
[0011]
Desirably, a soundproof material is provided at the fulcrum. According to this structure, it can prevent that the metal part of a 1st assembly and a 2nd assembly contacts, and can prevent the contact sound of an unnecessary metal. As an example, the soundproofing material is PVDF that can withstand autoclave sterilization.
[0012]
Desirably, each said front-end | tip part has a treatment surface which mutually opposed, and several groove | channels are formed in at least one treatment surface. Such a groove can be used to firmly sandwich the tissue.
[0013]
Preferably, a second treatment surface for performing ultrasonic surgery using ultrasonic vibration is formed at a place other than the treatment surface. According to such a 2nd treatment surface, the conventional ultrasonic operation using the contact of the tissue can be performed instead of the ultrasonic operation using the sandwiching of the tissue. This is particularly effective when the tissue cannot be pinched.
[0014]
Desirably, it has an elastic mechanism which urges | biases each said operation part to an opening direction. According to this configuration, the two action portions can be opened in a state where the user is not gripped, and contact between the two without performing ultrasonic surgery can be prevented. Here, the ultrasonic vibration may be stopped when the operating parts come into contact with each other except during ultrasonic surgery.
[0015]
Preferably, both the first and second assemblies have ultrasonic transducers, and ultrasonic surgery is performed while sandwiching the tissue between the two tip portions that are ultrasonically vibrated. According to this configuration, the ultrasonic surgical action can be enhanced, and in particular, the hemostatic action can be enhanced.
[0016]
Desirably, means for switching between a first mode for operating the two ultrasonic transducers and a second mode for operating one ultrasonic transducer are included. According to this configuration, an appropriate mode can be selected according to various conditions such as a surgical site. Preferably, it includes means for supplying different drive signals to each of the ultrasonic transducers.
[0017]
In order to achieve the above object, the present invention includes two assemblies that ultrasonically vibrate, and performs ultrasonic surgery with a tissue sandwiched between distal ends of the two assemblies.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings.
[0019]
FIG. 1 shows a main configuration of an ultrasonic surgical apparatus according to the present invention. FIG. 1 particularly shows the concept of a hand piece in an ultrasonic surgical apparatus. In FIG. 1, the handpiece is roughly composed of a first assembly 12 and a second assembly 14. The first assembly 12 and the second assembly 14 intersect with each other via the fulcrum 10, and the entire hand piece has a shape similar to scissors or pliers. In the present embodiment, since the first assembly 12 and the second assembly 14 have basically the same configuration, the first assembly 12 will be mainly described below.
[0020]
The first assembly 12 includes an action part 16 on the front side of the fulcrum 10 and an operation part 18 on the rear side of the fulcrum 10. Incidentally, like the first assembly 12, the second assembly 14 includes an action part 20 and an operation part 22.
[0021]
The operation unit 18 incorporates a vibrator 24. The vibrator 24 is, for example, a bolted ultrasonic vibrator. Such a vibrator has a plurality of piezoelectric elements sandwiched between two metal blocks via bolts. The ultrasonic vibration generated by the vibrator 24 is transmitted to the vibration transmitting body 26.
[0022]
The vibration transmission body 26 is provided across the operation unit 18 and the action unit 16 and has a function of transmitting ultrasonic vibration and increasing the amplitude in the same manner as a horn in a conventional ultrasonic surgical instrument. is doing. The vibration transmitting body 26 is formed of, for example, a titanium alloy.
[0023]
As shown in FIG. 1, the vibration transmission body 26 includes a first portion 26A in the operation portion 18 and a second portion 26B in the action portion 16, and ultrasonic vibrations are transmitted to the tissue by the distal end portion 26C. Is done. In the second assembly 14, similarly to the first assembly 12, a vibrator 25 is provided in the operation unit 22, and ultrasonic vibration generated thereby is transmitted to the vibration transmitting body 30. Then, ultrasonic vibration is transmitted to the tissue by the tip portion 30 </ b> C of the vibration transmitting body 30.
[0024]
As shown in FIG. 1, the two tip portions 26C and 30C are in opposed contact with each other. Specifically, the tissue is sandwiched between the treatment surfaces 26D and 30D as the surfaces facing each other, and in this state, ultrasonic vibration is transmitted from both sides or one side of the tissue.
[0025]
The outer surface 26E of the distal end portion 26C can also function as a treatment surface. If the outer surface 26E is brought into contact with the tissue, ultrasonic vibration can be transmitted by the contact.
[0026]
As described above, the first assembly 12 and the second assembly 14 are crossed by the fulcrum 10, and the fulcrum 10 is constituted by a member such as a soundproof material.
[0027]
Further, in order to avoid direct contact between the assemblies around the fulcrum 10, a soundproof material 38 is provided between the two assemblies. With such a configuration, it is possible to prevent a problem in which the two assemblies are in direct contact with each other and thereby generate a metallic noise.
[0028]
As shown in FIG. 1, each of the operation units 18 and 22 is provided with a case 32 made of a cushioning material. Specifically, the vibrators 24 and 25 and the vibration transmitting bodies 26 and 30 are provided in the case 32. Part of it is housed. By grasping the handpiece shown in FIG. 1 through the case 32, it is possible to prevent the problem that ultrasonic vibration is directly transmitted to the operator's hand.
[0029]
The distance between the two operation units 18 and 22 is preferably set according to the size of the hand, which is based on the same reason as scissors or pliers. According to such a configuration, it is possible to generate a large clamping force at the two distal end portions 26C and 30C by the action of the fulcrum 10 just by lightly grasping the two acting portions 18 and 22, and the clamping force can be reduced. It can be easily adjusted. For example, it is possible to easily perform ultrasonic surgery such as performing hemostasis while cutting the tissue according to the size and firmness of the tissue. Incidentally, for example, an elastic material 36 may be provided between the two operation portions 18 and 22 so that the tip portions 26C and 30C are opened in a normal state. In addition, a sensor for detecting contact between the two tip portions 26C and 30C may be provided, or a sensor for detecting a clamping pressure by the sensor may be provided.
[0030]
As shown in FIG. 1, in this embodiment, the first assembly 12 and the second assembly 14 are provided with vibrators 24 and 25, respectively, and both the two assemblies are caused to perform ultrasonic vibration. Can do. Of course, it is also possible to ultrasonically vibrate only one assembly by switching modes. Incidentally, in FIG. 1, a signal line 34 connected to each transducer 24, 25 is shown.
[0031]
In FIG. 1, a fulcrum 10 is provided at a position of a vibration node. Further, the tip portions 26C and 30C become vibration antinodes.
[0032]
In FIG. 1, the case 32 is provided only for the operation portions 18 and 22, but portions other than the tip portions 26 </ b> C and 30 </ b> C may be covered by the case 32. In that case, it is desirable to have a shape that does not impair the opening and closing movement of the two assemblies.
[0033]
According to the handpiece shown in FIG. 1, hemostasis by ultrasonic surgery can be performed particularly well. If hemostasis is performed with an electric scalpel, the generation of smoke, odor, or the like is a concern, but such problems can be avoided if hemostasis is performed with an ultrasonic surgical instrument as shown in FIG.
[0034]
FIG. 2 is a block diagram showing the overall configuration of the ultrasonic surgical apparatus according to the present embodiment.
[0035]
This ultrasonic surgical apparatus is roughly divided into a hand piece 50 and an apparatus main body 52. The handpiece 50 is provided with the two vibrators 24 and 25 as described above. In the embodiment shown in FIG. 2, the handpiece 50 is provided with an open / close switch 56 and a clamping pressure sensor 54. Here, the open / close switch 56 is a switch that detects the open / closed state of the first assembly 12 and the second assembly 14, and the sandwiching pressure sensor 54 is a sensor that detects the sandwiching pressure by the two tip portions. The signals detected by these are input to the controller 62.
[0036]
A mode setter 64 is connected to the controller 62, and the controller 62 controls ultrasonic surgery according to the set mode. The two signal output units 58 and 60 are connected to the vibrators 24 and 25, respectively, and a drive signal for generating ultrasonic vibration is supplied by each signal output unit. The operation is controlled by the controller 62.
[0037]
Here, when the first mode is selected, a drive signal is supplied to each of the two vibrators 24 and 25. When the second mode is selected, for example, only the signal output unit 58 functions and a drive signal is supplied only to the vibrator 24. Therefore, it is possible to select a mode according to the surgical site, surgical method, and the like. Incidentally, the signal output units 58 and 60 output the same drive signal in this embodiment, and therefore, it is possible to integrate the two signal output units. Further, the two signal output units 58 and 60 may output drive signals having different frequencies, amplitudes or phases, respectively. According to such a configuration, more various ultrasonic operations can be performed.
[0038]
【The invention's effect】
As described above, according to the present invention, the operability of the ultrasonic surgical apparatus can be improved.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a main configuration of an ultrasonic surgical apparatus according to the present invention.
FIG. 2 is a block diagram showing the overall configuration of the ultrasonic surgical apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 fulcrum, 12 1st assembly, 14 2nd assembly, 16, 20 Action part, 18, 22 Operation part, 24, 25 Vibrator, 26, 30 Vibration transmission body.

Claims (11)

Including first and second assemblies intersecting each other at a fulcrum;
The front side of the fulcrum in the first and second assemblies is an action part, and the tissue is sandwiched between the tip parts of the action parts,
A rear side of the fulcrum in the first and second assemblies is an operation unit, and each operation unit is opened and closed by opening and closing each operation unit,
It said first assemblies has a first ultrasonic transducer, the ultrasonic vibration is transmitted to the distal end portion of the first assembly,
The second assembly has a second ultrasonic transducer, and the ultrasonic vibration is transmitted to a tip portion of the second assembly;
Ultrasound surgery is performed while sandwiching the tissue between the two tip portions that are ultrasonically vibrated.
An ultrasonic surgical apparatus characterized by that. The apparatus of claim 1.
The ultrasonic surgical apparatus, wherein the ultrasonic transducer is provided in the operation unit, and at least the entire operation unit is covered with a case. The apparatus of claim 1.
The ultrasonic surgical apparatus, wherein the fulcrum is set at a position of a node of ultrasonic vibration. The apparatus of claim 1.
An ultrasonic surgical apparatus characterized in that a soundproof material is provided at the fulcrum. The apparatus of claim 1.
Each of the distal end portions has a treatment surface facing each other, and a plurality of grooves are formed on at least one treatment surface. The apparatus of claim 5.
An ultrasonic surgical apparatus, wherein a second treatment surface for performing ultrasonic surgery using ultrasonic vibration is formed at a place other than the treatment surface. The apparatus of claim 1.
An ultrasonic surgical apparatus having an elastic mechanism for urging each operation section in the opening direction. The apparatus of claim 1.
An ultrasonic surgical apparatus comprising: means for outputting drive signals having different frequencies, amplitudes, or phases to the first ultrasonic transducer and the second ultrasonic transducer . The apparatus of claim 1 .
Ultrasonic surgical apparatus comprising a means for switching the second mode to operate the first mode and one ultrasound transducer for operating the two ultrasonic transducers. The apparatus of claim 1 .
An ultrasonic surgical apparatus comprising means for supplying different drive signals to each ultrasonic transducer. A first assembly that ultrasonically vibrates with a first ultrasonic transducer ;
A second assembly that ultrasonically vibrates with a second ultrasonic transducer;
Means for supplying a first drive signal to the first ultrasonic transducer;
Means for supplying a second drive signal to the second ultrasonic transducer;
A first mode for operating both the first ultrasonic transducer and the second ultrasonic transducer; and a second mode for operating one of the first ultrasonic transducer and the second ultrasonic transducer; Means for switching between,
Including
In the first assembly, ultrasonic vibration from the first ultrasonic transducer is transmitted to a tip portion of the first assembly,
In the second assembly, ultrasonic vibration from the second ultrasonic transducer is transmitted to a tip portion of the second assembly,
Across the tissue at the tip portion of the two assemblies ultrasound surgery is performed,
An ultrasonic surgical apparatus characterized by that.

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