【発明の詳細な説明】本発明は、電気メスに付設されて常に最適な負荷インピ
ーダンスを検出するようにした安全装置に関する・従来多くの電気メスは対極板がアース電位であるため電
気メス施術の際心電計等手術モニタを使用する場合該モ
ニタの電極にリーク電流があるとこの電流が対極板から
アースに流れる回路を形成し、患者に危険な電流が流れ
るため患者の感電事故、大傷事故等を起すことになり極
めて不適当であった。しかし、最近これを改良し第１図
に示す如く、メス先ａから流れる電流が対極板すをとお
ファースしない構造のものが多く使用され、例えば心ｔ
ｌｉｔｅによる高周波分流が増加しないものとなり、さ
らに、対極板すは、ズしたカ、はがれたシせず、常に電
流密度が低い交流結合型のマットが使用されるようにな
ったので低周波電流を通しにくく、直流電流は全く通さ
ないこととなシミ気事故を著しく減少せしめることとな
った。[Detailed Description of the Invention] The present invention relates to a safety device that is attached to an electric scalpel and constantly detects the optimum load impedance. Conventionally, many electric scalpels have a return electrode at ground potential, which makes it difficult to perform electric scalpels. When using a surgical monitor such as an electrocardiograph, if there is a leakage current in the electrode of the monitor, this current will form a circuit that flows from the return electrode to the ground, causing a dangerous current to flow to the patient, resulting in an electric shock or serious injury to the patient. This was extremely inappropriate and could cause accidents. However, recently this has been improved, and as shown in Fig. 1, a structure in which the current flowing from the knife tip a does not pass through the counter electrode is often used.
The high frequency shunt caused by lite does not increase, and in addition, the return electrode plate does not fall off or peel off, and AC coupling type mats that always have a low current density are now used, making it easier to handle low frequency currents. It is difficult to pass through, and direct current does not pass through it at all, significantly reducing stain accidents.
しかしながら、対極板側又はメス先側の接触不良や断線
の基づく熱傷事故、出力短絡に基づくメス本体内部にお
ける電子回路等の故障等が生起する可能性は依然残され
ており、これらを完全に除去して最も確実かつ安全に操
作しうろことを更に強く景望されていた。However, there is still the possibility of burn accidents caused by poor contact or disconnection on the return electrode side or knife tip side, or failure of the electronic circuit inside the scalpel body due to output short circuit, and these have been completely eliminated. There was a strong desire to ensure the most reliable and safe operation possible.
本発明はかかる実情に鑑みてなされたもので、電気メス
の出力電流と予め設定された出力電流とを比較し負荷イ
ンピーダンスか最適値の上限又は下限を上層シ又は下層
った場合警報及び又はメスの出力停止に連繋せしめるも
ので、従来の直流型の電気メスに較べて一段と安全性が
優れている交流結合型の電気メスの安全性をさらに高め
るためとされたものである。The present invention has been made in view of the above circumstances, and it compares the output current of the electric scalpel with a preset output current, and if the load impedance exceeds the upper limit or lower limit of the optimum value, an alarm is issued and/or This is intended to further enhance the safety of the AC coupling type electric scalpel, which is much safer than the conventional DC type electric scalpel.
以下図面を参照し実施例に基づいて本発明を説明する。The present invention will be described below based on embodiments with reference to the drawings.
第２図は本発明に係る電気メス用安全装置を示す説明図
である。FIG. 2 is an explanatory diagram showing a safety device for an electric scalpel according to the present invention.
高周波発振器１とトランス２を設けてなる電気メスは、
メス先３と対極板４との間に患者を介在して交流結合型
に形成せしめられる。The electric scalpel is equipped with a high frequency oscillator 1 and a transformer 2.
The patient is interposed between the scalpel tip 3 and the return electrode plate 4 to form an AC coupled type.
本発明の特徴部分は、上記の構成に基づく電気メスのメ
ス先３の近傍の出力回路５に挿入されて該回路の出力電
流を検出するコイル６を有することである。このコイル
６には該出力電流を検波する検波器７が接続される。A feature of the present invention is that it has a coil 6 that is inserted into the output circuit 5 near the scalpel tip 3 of the electric scalpel based on the above-described configuration and detects the output current of the circuit. A detector 7 for detecting the output current is connected to the coil 6.
一方、きめられた設定値では負荷インピーダンスによシ
出力電流が一定範囲に規制されるよう出力設定用？リウ
ムと同軸に検出器８が設けられ、さらに、この検出器か
ら得られる負荷インピーダンスと前記検波器から得られ
るインピーダンスとが比較器９によって比較され、この
比較によって負荷インピーダンスが最適値の上限又は下
限を上層るか又は下層る場合警報を発するか又は前記出
力電流を停止せしめる警報・出力停止装置ｌＯを設けて
いる。また、該警報・出力停止装置の前段には、必要に
応じ、シュミット回路１１を挿入し、該装置の警報器部
分をリセットがかかるまで、動作し放しにすることがで
きる。On the other hand, is it possible to set the output so that the output current is regulated within a certain range depending on the load impedance at a predetermined setting value? A detector 8 is provided coaxially with the detector, and a comparator 9 compares the load impedance obtained from this detector with the impedance obtained from the detector, and this comparison determines whether the load impedance is at the upper or lower limit of the optimal value. An alarm/output stop device 10 is provided which issues an alarm or stops the output current when the output current is above or below the current level. Further, if necessary, a Schmitt circuit 11 can be inserted in the front stage of the alarm/output stop device to keep the alarm part of the device in operation until it is reset.
本発明は以上の構成に基づくものであって、電気メスの
メス先近傍の出力電流に基き負荷インピーダンスがその
最適値を上層るか又は下層る場合に、警報及び又は出力
電流の停止を生ぜしめるものである。The present invention is based on the above configuration, and generates an alarm and/or stops the output current when the load impedance is above or below the optimum value based on the output current near the tip of the electric scalpel. It is something.
この場合負荷インピーダンスが最適値を上層ると、対極
板又はメス先側の接触不良、断線等が考えられ、これら
によって生じる患者の熱傷事故等を未然に防止でき、ま
た、負荷インピーダンスが最適値を下層るときには出力
短絡等が考えられ、メス本体内部の電子回路を故障から
保護することが可能である。かくして、切開、凝固又は
それらの混合において使用される電気メスの安全性を著
しく高めるもので極めて有用な発明である。In this case, if the load impedance exceeds the optimum value, poor contact or disconnection of the return electrode or the knife tip side may occur, which can prevent burns to the patient, etc. When the lower layer is lowered, an output short circuit may occur, and it is possible to protect the electronic circuit inside the female body from failure. This is an extremely useful invention that significantly increases the safety of electric scalpels used for incision, coagulation, or a combination thereof.
第１図は本発明が適用される電気メスの説明図、第２図
は本発明装置を示す説明図である。１・・・高周波発振器、２・・・トランス、３・・・メ
ス先、４・・・対極板、５・・・出力回路、６・・・コ
イル、７・・・検波器、８・・・検出器、９・・・比較
器、１０・・・警報・出力停止装置、ｌｌ・・・シュミ
ット回路特許出願人 持田製薬株式会社FIG. 1 is an explanatory diagram of an electric scalpel to which the present invention is applied, and FIG. 2 is an explanatory diagram showing the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... High frequency oscillator, 2... Transformer, 3... Female tip, 4... Return electrode, 5... Output circuit, 6... Coil, 7... Detector, 8...・Detector, 9...Comparator, 10...Alarm/output stop device, ll...Schmidt circuit patent applicant Mochida Pharmaceutical Co., Ltd.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57188143AJPS5977844A (en) | 1982-10-28 | 1982-10-28 | Safety device for electric scalpel |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57188143AJPS5977844A (en) | 1982-10-28 | 1982-10-28 | Safety device for electric scalpel |
| Publication Number | Publication Date |
|---|---|
| JPS5977844Atrue JPS5977844A (en) | 1984-05-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57188143APendingJPS5977844A (en) | 1982-10-28 | 1982-10-28 | Safety device for electric scalpel |
| Country | Link |
|---|---|
| JP (1) | JPS5977844A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185405U (en)* | 1985-05-13 | 1986-11-19 | ||
| JPH03133442A (en)* | 1989-10-18 | 1991-06-06 | Aloka Co Ltd | Electric surgical operation device |
| JPH0385011U (en)* | 1989-12-20 | 1991-08-28 | ||
| JP2017060758A (en)* | 2015-09-21 | 2017-03-30 | バイオセンス・ウエブスター・(イスラエル)・リミテッドBiosense Webster (Israel), Ltd. | Ablation current measurement |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185405U (en)* | 1985-05-13 | 1986-11-19 | ||
| JPH03133442A (en)* | 1989-10-18 | 1991-06-06 | Aloka Co Ltd | Electric surgical operation device |
| JPH0385011U (en)* | 1989-12-20 | 1991-08-28 | ||
| JP2017060758A (en)* | 2015-09-21 | 2017-03-30 | バイオセンス・ウエブスター・(イスラエル)・リミテッドBiosense Webster (Israel), Ltd. | Ablation current measurement |
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