JP2002153481A - 医療用処置システム、処置具及び処置具用制御装置 - Google Patents

医療用処置システム、処置具及び処置具用制御装置

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JP2002153481A
JP2002153481A JP2000350116A JP2000350116A JP2002153481A JP 2002153481 A JP2002153481 A JP 2002153481A JP 2000350116 A JP2000350116 A JP 2000350116A JP 2000350116 A JP2000350116 A JP 2000350116A JP 2002153481 A JP2002153481 A JP 2002153481A
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treatment
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treatment tool
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JP3822433B2 (ja
Inventor
Norihiko Haruyama
典彦 晴山
Tairyo Sato
泰亮 佐藤
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Olympus Corp
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Olympus Optical Co Ltd
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Abstract

(57)【要約】 【課題】 処置具の種類をより確実に判断して出力を行
うことが可能な医療用処置システム、処置具及び処置具
用制御装置を実現する。 【解決手段】 医療用処置システム1は、凝固切開鉗子
2と、処置具用制御装置3とで構成される。前記処置具
用制御装置3は、凝固切開鉗子2の素子数識別子42を
識別し、前記凝固切開鉗子2の発熱素子35の数を識別
する素子数識別部51と、前記発熱素子35の各々の状
態が正常であるか否かを検出する素子状態検出部52
と、前記素子温度制御部54に設定データを出力する温
度設定部56と、前記素子状態検出部52で検出した発
熱素子35の状態と前記素子数識別部51で識別した発
熱素子35の数とを比較して異常を判別する鉗子異常判
別部57と、この鉗子異常判別部57の判別結果に基づ
き、前記出力部55の出力を制御する制御部58とを有
して構成される。

Description

【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、医療用処置システ
ム、処置具及び処置具用制御装置、更に詳しくは、生体
組織に処置エネルギを与えて処置する医療用処置システ
ム、処置具及び処置具用制御装置に関する。
【0002】
【従来の技術】一般に、処置具は、外科手術あるいは内
科手術で生体組織の切開や凝固、止血等の処置を行う際
に用いられる。上記処置具は、生体組織を処置するため
の処置エネルギを発生する処置エネルギ付与手段を内蔵
し、この処置エネルギ付与手段で発生した処置エネルギ
を生体組織に与えて、切開や凝固、止血等の処置を行っ
ている。
【0003】このような処置具は、処置具用制御装置に
着脱自在に接続され、この処置具用制御装置からの駆動
エネルギを供給することで、上記処置エネルギ付与手段
を駆動制御される医療用処置システムを構成している。
【0004】このような医療用処置システムは、従来よ
り種々提案されている。例えば、特許2578250号
公報に記載されている医療用処置システムは、処置具と
して超音波を発生する超音波振動子を内蔵したハンドピ
ースと、このハンドピースを着脱自在に接続可能で、こ
のハンドピースの超音波振動子を駆動制御する処置具用
制御装置とから構成される超音波処置装置が提案されて
いる。
【0005】また、特開2000−250号公報に記載
されている医療用処置システムは、処置具として高周波
電流を発生する電極を有する電気メスと、この電気メス
を着脱自在に接続可能で、この電気メスの電極を駆動制
御する処置具用制御装置とから構成される電気メス装置
が提案されている。
【0006】上記特許2578250号公報や特開20
00−250号公報に記載の医療用処置システムは、ハ
ンドピース又は電気メスにこれらハンドピース又は電気
メスの電極の種類を識別するための識別信号を出力する
出力手段を内蔵している。そして、これらハンドピース
又は電気メスを接続する処置具用制御装置は、ハンドピ
ース又は電気メスの電極の種類を検出手段により検出
し、この検出結果に応じてそれぞれの出力を制御するよ
うになっている。
【0007】
【発明が解決しようとする課題】しかしながら、上記特
許2578250号公報や特開2000−250号公報
に記載の医療用処置システムは、上記ハンドピース又は
電気メスに内蔵した出力手段から出力される識別信号の
誤りや処置具用制御装置に設けた検出手段の検出誤りを
判別することができないという問題があった。
【0008】本発明は、これらの事情に鑑みてなされた
ものであり、処置具の種類をより確実に判断して出力を
行うことが可能な医療用処置システム、処置具及び処置
具用制御装置を提供することを目的とする。
【0009】
【課題を解決するための手段】前記目的を達成するた
め、本発明の請求項1に記載の医療用処置システムは、
生体組織に処置エネルギを付与して処置するエネルギ付
与手段を複数有する処置部及び前記複数のエネルギ付与
手段の数を表す識別子を有し、前記複数のエネルギ付与
手段で発生した処置エネルギを生体組織に与えて処置す
る処置具と、この処置具が着脱自在に接続可能な接続手
段及び前記処置具の前記複数のエネルギ付与手段のそれ
ぞれに対して駆動エネルギを出力する出力手段を有する
処置具用制御装置と、を具備し、前記処置具の前記識別
子を識別し、前記処置具の前記複数のエネルギ付与手段
の数を識別する識別手段と、前記処置具の前記複数のエ
ネルギ付与手段のそれぞれが正常に稼動可能な状態か否
かを検出する検出手段と、前記識別手段からの識別結果
と前記検出手段からの検出結果とを比較し、この比較結
果に基づき、前記出力手段を制御する制御手段と、を設
けたことを特徴としている。また、本発明の請求項2に
記載の処置具は、生体組織に処置エネルギを付与して処
置するエネルギ付与手段を複数有する処置部と、前記複
数のエネルギ付与手段の数を表す識別子と、を具備した
ことを特徴としている。また、本発明の請求項3に記載
の処置具用制御装置は、生体組織を処置するための熱エ
ネルギを発生する複数の発熱手段及び前記複数の発熱手
段の数を表す識別子を有し、前記複数の発熱手段で発生
した熱エネルギを生体組織に与えて処置する処置具が着
脱自在に接続可能な接続手段と、前記接続手段により接
続された前記処置具の前記識別子を識別して前記発熱手
段の数を識別する識別手段と、前記処置具の前記複数の
発熱手段との各々の接続状態を検出する接続状態検出手
段と、前記複数の発熱手段の各々に対して電気エネルギ
を出力する出力手段と、前記識別手段からの識別結果と
前記接続状態検出手段からの検出結果とに基づき、前記
出力手段を制御する制御手段と、を具備したことを特徴
としている。この構成により、処置具の種類をより確実
に判断して出力を行うことが可能な医療用処置システ
ム、処置具及び処置具用制御装置を実現する。
【0010】
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。 (第1の実施の形態)図1ないし図5は本発明の第1の
実施の形態に係り、図1は本発明の第1の実施の形態を
備えた医療用処置システムの全体構成を示すシステム構
成図、図2は図1の医療用処置システムで用いられる処
置具用制御装置の外観図であり、図2(a)は前面パネ
ル側から見た処置具用制御装置の外観斜視図、図2
(b)は、同図(a)の背面パネルを示す外観図、図3
は図1の医療用処置システムで用いられる処置具を示す
説明図、図4は図3の処置具の処置部を示す説明断面図
であり、図4(a)は処置具の処置部を上面から見た上
面断面図、図4(b)は処置具の処置部を側面から見た
側面断面図、図5は本発明の第1の実施の形態の医療用
処置システムを説明する回路ブロック図である。
【0011】本実施の形態の医療用処置システム1は、
図1に示すように処置具として後述する複数の発熱素子
を内蔵する凝固切開鉗子2と、この凝固切開鉗子2を着
脱自在に接続可能で、この凝固切開鉗子2の前記発熱素
子に電力(電気エネルギ)を出力して駆動制御する処置
具用制御装置3とから構成される。
【0012】前記凝固切開鉗子2は、延出する接続ケー
ブル4の後端部に設けたコネクタ5を前記処置具用制御
装置3に着脱自在に接続するようになっている。前記凝
固切開鉗子2に内蔵されている発熱素子の数は処置目的
に応じた鉗子の種類によって異なり、前記コネクタ5に
は前記発熱素子数を示す後述の識別子が内蔵されてい
る。
【0013】前記処置具用制御装置3には、フットスイ
ッチ6が接続可能である。前記フットスイッチ6は、前
記凝固切開鉗子2の発熱手段に対する入力手段として最
高温度レベル出力スイッチ7a及び設定温度レベル出力
スイッチ7bの2つのスイッチを有している。尚、本実
施の形態では、フットスイッチ6にこれら最高温度レベ
ル出力スイッチ7a及び設定温度レベル出力スイッチ7
bの2つのスイッチを用意することで、処置目的に応じ
た2種類の温度を設定変更すること無く、即座に出力可
能にしている。
【0014】図2に示すように前記処置具用制御装置3
は、前面パネル3a及び背面パネル3bを有して構成さ
れている。図2(a)に示すように前記前面パネル3a
には、前記凝固切開鉗子2のコネクタ5を着脱自在に接
続可能なコネクタ受け部11を備えている。前記前面パ
ネル3aには、電源をON/OFFする電源スイッチ1
2と、前記凝固切開鉗子2の発熱素子の発熱温度レベル
を設定する温度レベルUPスイッチ13a及び温度レベ
ルDOWNスイッチ13bと、スタンバイ状態から出力
可能状態に移行させるスタンバイスイッチ14とを有し
ている。また、前記前面パネル3aには、前記温度レベ
ルUPスイッチ13a及び温度レベルDOWNスイッチ
13bで設定した温度レベルを表示する温度レベル表示
LED15と、スタンバイ状態を表示するために、出力
不可時に点灯するスタンバイ表示LED16と、前記凝
固切開鉗子2の発熱素子に通電中であることを示す出力
表示LED17と、前記凝固切開鉗子2に異常がある場
合に点灯する鉗子異常表示LED18aと、内部回路に
異常がある場合に点灯する電源異常表示LED18b
と、を有している。更に、前記前面パネル3aには、警
告音を発生するブザー19を有している。
【0015】一方、図2(b)に示すように前記背面パ
ネル3bには、フットスイッチコネクタ受け部21と、
電源インレット22とを備えている。また、前記背面パ
ネル3bには、前記凝固切開鉗子2の各発熱素子の状態
を表示する素子状態表示LED23(23a〜23d)
を有している。前記素子状態表示LED23は、前記凝
固切開鉗子2の各発熱素子が正常である場合は緑色、異
常である場合には赤色、発熱素子が接続されていない場
合には消灯するようになっている。尚、本実施の形態の
処置具用制御装置3は、最大4つの発熱素子を内蔵した
凝固切開鉗子2が接続可能となっている。
【0016】図3に示すように前記凝固切開鉗子2は、
固定刃31及びこの固定刃31に対して接離可能な可動
刃32を備えて生体組織を把持する把持部33と、この
把持部33で生体組織を把持するために開閉操作を行う
ハンドル部34とから構成される。尚、前記接続ケーブ
ル4は、前記ハンドル部34の後端側から延出するよう
になっている。
【0017】前記固定刃31は、図4(a)に示すよう
に例えば3つの発熱素子35(35a〜35c)を固定
刃本体31aに内蔵している。前記発熱素子35は、例
えばセラミック板に形成された薄膜抵抗体である。これ
ら発熱素子35には、通電するための同軸リード線36
の一端がそれぞれ接続され、これらリード線36の他端
は前記接続ケーブル4に挿通配置され前記コネクタ5の
後述するコネクタ端子に接続されている。前記発熱素子
35は、図4(b)に示すように発熱板37に熱的に結
合され、発熱処置部38を構成している。前記発熱素子
35で発生した熱は、発熱板37に伝達されるようにな
っている。
【0018】一方、前記可動刃32は、前記固定刃31
の発熱板37とで生体組織を把持可能な鋸刃部39aを
有する弾性部材39を可動刃本体32aに備えて構成さ
れている。そして、前記ハンドル部34の閉操作によ
り、前記可動刃32が前記固定刃31に対して閉じてい
くことで、前記固定刃31の発熱板37と前記可動刃3
2の鋸刃部39aとで弾性的に生体組織を把持し、これ
ら発熱板37と弾性部材39に挟まれた生体組織が発熱
板37の熱によって凝固切開されるようになっている。
【0019】図5に示すように前記コネクタ5は、前記
同軸リード線36の他端を接続したコネクタ端子41
(41a〜41f)を有している。前記コネクタ端子4
1は、前記処置具用制御装置3のコネクタ受け部11に
接続可能である。また、前記コネクタ5は、前記発熱素
子35の数を表す素子数識別子42を内蔵している。こ
こで、素子数識別子とは、具体的には発熱素子の数に応
じた所定の抵抗値を有する電気抵抗素子である。この素
子数識別子42は、コネクタ端子43(43a,43
b)を介して処置具用制御装置3のコネクタ受け部11
に接続可能である。
【0020】本実施の形態では、前記コネクタ5が前記
処置具用制御装置3のコネクタ受け部11に接続された
際に、コネクタ端子43を介して前記素子数識別子42
を識別することで発熱素子35の数を識別すると共に、
前記コネクタ端子41を介して発熱素子35とのそれぞ
れの接続状態を検出し、これら発熱素子35の数と発熱
素子35との接続状態とを比較して前記発熱素子35の
それぞれが正常に稼動可能な状態か否かを判別し、後述
の出力部を制御するように構成する。
【0021】次に、前記処置具用制御装置3の内部構成
を説明する。前記処置具用制御装置3は、例えば最大4
つの発熱素子35を有する凝固切開鉗子2に対応するよ
うに構成されている。前記処置具用制御装置3は、前記
コネクタ受け部11に前記コネクタ5のコネクタ端子4
1を接続可能な端子45(45a〜45h)と、前記コ
ネクタ5のコネクタ端子43を接続可能な端子46(4
6a,46b)とを備えている。前記端子46aは、基
準電圧Vに接続されると共に、前記発熱素子35の数を
識別する素子数識別部51に接続されている。一方、前
記端子46bは、グランドに接続されている。前記端子
46に前記コネクタ5のコネクタ端子43を接続する
と、前記基準電圧Vにより前記素子数識別子42の抵抗
に応じた電流がグランドに流れて電圧降下を起こし、こ
の電圧降下を素子数識別部51で検出するようになって
いる。前記素子数識別部51は、検出した電圧降下によ
り素子数識別子42の抵抗値を計測する。前記素子数識
別部51は、測定した抵抗値を予め決められた素子数換
算方法を用いて素子数を識別する。
【0022】ここで、素子数換算方法とは、例えば素子
数識別子42の抵抗値が1kΩ以上10kΩ未満の場合
は素子数1、10kΩ以上20kΩ未満の場合は素子数
2、20kΩ以上30kΩ未満の場合は素子数3、30
kΩ以上40kΩ未満の場合は素子数4とする方法であ
る。尚、抵抗値が40kΩ以上の場合は、鉗子未接続状
態と判断するようになっている。
【0023】前記処置具用制御装置3は、前記素子数識
別部51と、前記発熱素子35の各々の状態が正常であ
るか否かを検出する素子状態検出部52(52a〜52
d)と、前記発熱素子35の各々の温度を測定する素子
温度測定部53(53a〜53d)と、前記素子温度測
定部53で測定した測定データと入力される設定データ
とを比較して、各発熱素子35の出力をそれぞれ独立し
て制御を行う素子温度制御部54(54a〜54d)
と、前記素子温度制御部54の制御信号に基づいた電力
(電気エネルギ)の出力を行う出力部55(55a〜5
5d)と、前記素子温度制御部54に設定データを出力
する温度設定部56と、前記素子状態検出部52で検出
した発熱素子35の状態と前記素子数識別部51で識別
した発熱素子35の数とを比較して異常を判別する鉗子
異常判別部57と、この鉗子異常判別部57の判別結果
に基づき、前記温度設定部56及び前記出力部55を制
御する制御部58とを有して構成されている。尚、前記
凝固切開鉗子2に内蔵されている発熱素子35が3個以
下の場合は、それぞれのチャンネルから順番に割り当て
られるようになっている。
【0024】前記素子温度測定部53は、発熱素子35
の抵抗値が温度によって変化することを利用して温度測
定を行う。即ち、前記素子温度測定部53は、抵抗値検
出機能として発熱素子35の抵抗値変化によって変化す
る発熱素子35に流れる電流値又は発熱素子35にかか
る電圧値を測定することで発熱素子35の抵抗値を検出
し、この検出した抵抗値により発熱素子35の温度を算
出するようになっている。
【0025】前記素子状態検出部52は、前記素子温度
測定部53と同様な抵抗値検出機能を有している。前記
素子状態検出部52は、電流値又は電圧値を測定するこ
とで発熱素子35の抵抗値を検出し、検出した抵抗値が
予め決められた正常範囲内にあるか否か判断する。例え
ば、前記素子状態検出部52は、測定した抵抗値が10
Ω〜100Ω内にある場合に正常と判断し、一方、測定
した抵抗値が上記10Ω〜100Ω外にある場合に異常
と判断するようになっている。そして、前記素子状態検
出部52は、この検出結果を前記鉗子異常判別部57に
出力するようになっている。
【0026】前記制御部58は、操作部61で入力操作
される温度設定及びフットスイッチ入力部62を介して
前記フットスイッチ6で入力操作される最高温度レベル
出力又は設定温度レベル出力によって、前記温度設定部
56を設定するようになっている。ここで、操作部61
とは、上述した前記処置具用制御装置3の前面パネル3
aに設けている温度レベルUPスイッチ13a等の各種
スイッチであり、また、前記処置具用制御装置3の前面
パネル3a及び背面パネル3bに設けている各種表示L
EDは、表示部63としている。また、前記制御部58
は、電源異常判別部64に接続されており、この電源異
常判別部64で回路内の異常が検出された場合、この電
源異常判別部64からの異常信号が入力され、前記鉗子
異常表示LED18aを点灯させて前記ブザー19を発
音させるようになっている。
【0027】このように構成された医療用処置システム
1の作用を図5を参照し、表1〜表3を用いて説明す
る。先ず、電源スイッチ12をオンして医療用処置シス
テム1全体を起動する。
【0028】そして、温度レベルUPスイッチ13a、
温度レベルDOWNスイッチ13bを操作して使用する
温度レベルを設定する。この設定される温度レベルは、
例えばレベル1からレベル5までの5段階があり、レベ
ル1〜5は予め160℃〜200℃の間で10℃間隔に
設定されている。
【0029】ここで、処置具用制御装置3のコネクタ受
け部11に凝固切開鉗子2のコネクタ5が未接続の場合
には、基準電圧Vの電圧低下が無いので、未接続状態で
あることが検出できる。この場合、制御部58は、表示
部である前面パネル3aの鉗子異常表示LED18aを
点灯させ、素子状態表示LED23a〜23d全てを消
灯させる。このとき、制御部58は、ブザー19を発音
させない。
【0030】処置具用制御装置3のコネクタ受け部11
に凝固切開鉗子2のコネクタ5が接続されると、素子数
識別子42の抵抗値に応じた基準電圧Vの電圧低下によ
り、素子数識別部51は素子数識別子42を識別して、
凝固切開鉗子2に内蔵されている発熱素子数を識別す
る。
【0031】また、素子状態検出部52は、各々の発熱
素子35の抵抗値が正常範囲内にあるか否かを検出す
る。このとき、発熱素子35が元々ないチャンネルや断
線しているチャンネルの抵抗値は、正常範囲を上回り、
短絡しているチャンネルの抵抗値は正常範囲を下回る。
【0032】ここで、図3で説明したように発熱素子3
5が3つ内蔵されている凝固切開鉗子2を用いている場
合について説明する。各々の発熱素子35の抵抗値が正
常範囲内にある正常状態の場合、素子数識別部51、素
子状態検出部52、鉗子異常判別部57及び制御部58
は、表1に示すようになっている。
【0033】
【表1】 コネクタ5の内部には、上述したように発熱素子数3を
示す素子数識別子42が組み込まれている。このため、
表1に示すように素子数識別部51は、発熱素子A,
B,Cを「素子有り」、Dを「素子無し」として素子数
3を識別する。
【0034】一方、素子状態検出部52のうち、素子状
態検出部52a〜52cは発熱素子の抵抗値を正常と検
出し、素子状態検出部52dのみが断線・未接続である
ことを検出する。ここで、発熱素子Dは、元々存在しな
いことが素子数識別部51で示され、素子状態検出部5
2dでも断線・未接続とされて両者の検出が一致する。
このことにより、鉗子異常判別部57は、正常と判別し
て各チャンネルの接続信号を制御部58に送信する。
【0035】各チャンネルの接続信号を送信された制御
部58は、鉗子異常表示LED18aを消灯させる。ま
た、制御部58は、素子状態表示LED23のうち、素
子状態表示LED23a〜23cを緑色に点灯させ、素
子状態表示LED23dを消灯させる。
【0036】ここで、スタンバイスイッチ14が押下操
作されると、制御部58はスタンバイ状態を解除し、ス
タンバイ表示LED16を消灯させて出力可能状態とす
る。また、再びスタンバイスイッチ14が押下操作され
た場合、制御部58はスタンバイ状態に移行し、スタン
バイ表示LED16を点灯させて出力可能状態を解除す
る。
【0037】そして、凝固切開鉗子2の発熱素子35へ
の通電は、フットスイッチ6の操作による。制御部58
は、フットスイッチ6の最高温度レベル出力スイッチ7
aがONされた場合に、設定されていた温度レベルに関
係なく最高温度レベル5に設定し、発熱素子A〜Cの出
力部55a〜55cのみを出力状態にする。尚、存在し
ない発熱素子Dの出力部55dは、出力しない。
【0038】一方、制御部58は、設定温度レベル出力
スイッチ7bがONされた場合に、設定されていた温度
レベルに設定して発熱素子A〜Cの出力部55a〜55
cのみを出力状態にする。尚、存在しない発熱素子Dの
出力部55dは、出力しない。これら出力部55a〜5
5cの出力中は、素子温度制御部54によって各々の発
熱素子温度が設定温度になるように出力調整される。
【0039】尚、制御部58は、フットスイッチ6の2
つのスイッチ最高温度レベル出力スイッチ7a及び設定
温度レベル出力スイッチ7bのうち、どちらのスイッチ
で出力されているかを告知するものとして最高温度レベ
ル出力スイッチ7aによる出力時に、ブザー19を連続
音で発音させて出力表示LED17を点灯させる。一
方、制御部58は、設定温度レベル出力スイッチ7bに
よる出力時にブザー19を間欠音で発音させて出力表示
LED17を点滅させる。尚、このとき、用いられるブ
ザー19は、周波数を変調するようにしても良い。
【0040】また、電源異常判別部64は、処置具用制
御装置3内部の異常発熱を監視し、異常発熱を検知した
場合には制御部58に信号を送信する。そして、制御部
58は、直ちに、出力部55a〜55cの出力を停止さ
せる。このとき、制御部58は、電源異常表示LED1
8bを点灯させ、ブザー19を発音させて異常を告知す
る。この場合、制御部58は、自動的にスタンバイ状態
に移行してスタンバイ表示LED16を点灯させる。
【0041】異常状態が解除されると、制御部58は、
電源異常表示LED18bを消灯させ、ブザー19を停
止させる。そして、スタンバイスイッチ14が押下操作
されると、再びスタンバイ状態が解除され、制御部58
は、スタンバイ表示LED16を消灯させる。
【0042】次に、表2及び表3を用いて凝固切開鉗子
2の異常判断を説明する。先ず表2の場合について説明
する。
【0043】
【表2】 表2に示すように素子数識別部51は、発熱素子A,
B,Cの3つがあると識別している。しかし、素子状態
検出部52a〜52dは素子状態検出部52aのみ発熱
素子の抵抗値が正常で、素子状態検出部52b〜52d
は発熱素子の抵抗値が異常と判断している。このよう
に、両者の信号が食い違っている。この場合、発熱素子
B及びCの破損が考えられる。鉗子異常判別部57は、
異常であると判別し、この異常信号を制御部58に送信
する。制御部58は、一つの発熱素子でも異常が検出さ
れれば直ちに全素子の出力を停止させる。と同時に、制
御部58は、鉗子異常表示LED18aを点灯させると
共に、ブザー19を発音させて異常を告知する。このと
き、制御部58は、素子状態表示LED23aを緑色に
点灯させ、素子状態表示LED23b,23cを赤色に
点灯させ、素子状態表示LED23dを消灯させる。
【0044】次に、表3の場合について説明する。
【0045】
【表3】 表3に示すように素子数識別部51は、発熱素子A,B
の2つがあると識別している。しかし、素子状態検出部
52a〜52dは、素子状態検出部52a〜52cの発
熱素子の抵抗値が正常で、素子状態検出部52dは断線
・未接続と判断している。このように、両者の信号が食
い違っている。この場合、素子数識別子42の誤設定、
素子数識別部51の誤判断、又は素子状態検出部52c
の誤判断が原因として考えられる。鉗子異常判別部57
は、異常であると判別し、この異常信号を制御部58に
送信する。上述したように制御部58は、一つの発熱素
子でも異常が検出されれば直ちに全素子の出力を停止さ
せる。と同時に、制御部58は、鉗子異常表示LED1
8aを点灯させると共に、ブザー19を発音させて異常
を告知する。このとき、制御部58は、素子状態表示L
ED23a,23bを緑色に点灯させ、素子状態表示L
ED23cを赤色に点灯させ、素子状態表示LED23
dを消灯させる。
【0046】これにより、本実施の形態の医療用処置シ
ステム1は、発熱素子35の破損検出のみではなく、素
子数識別子42の誤設定、素子数識別部51の誤判断、
又は素子状態検出部52の誤判断などを原因とした異常
も検出できる。また、凝固切開鉗子2に内蔵している発
熱素子35の発熱能力が変化した場合には凝固切開能の
変化を予測できないので、本実施の形態の医療用処置シ
ステム1は、一つの発熱素子でも異常が検出された場合
には、出力不可とすることで、安定した凝固切開能を維
持することができる。
【0047】この結果、本実施の形態の医療用処置シス
テム1は、発熱素子35の破損のみではなく各部の異常
による誤認識も検出でき、より確実に凝固切開鉗子2に
適した出力を行うことができるという効果を得る。ま
た、本実施の形態の医療用処置システム1は、安定した
凝固切開能を維持することができる。
【0048】(第2の実施の形態)図6及び図7は本発
明の第2の実施の形態に係り、図6は本発明の第2の実
施の形態の医療用処置システムを説明する回路ブロック
図、図7は図6の医療用処置システムの作用を説明する
グラフである。上記第1の実施の形態では、前記鉗子異
常判別部57又は前記電源異常検出部64で異常を判別
又は検出した場合、前記制御部58により前記ブザー1
9を発音させて警告音を発生するように構成している
が、本第2の実施の形態では更に前記発熱素子35の素
子温度が予め制御部58に記憶された温度以下に下がる
まで前記ブザー19で発熱警告音を発音させるように構
成する。それ以外の構成は、上記第1の実施の形態と同
様なので説明を省略し、同じ構成には同じ符号を付して
説明する。
【0049】図6に示すように本第2の実施の形態の医
療用処置システム70は、素子温度測定部53が制御部
58に接続されている。そして、前記素子温度測定部5
3から得た前記発熱素子35の素子温度の測定データ
は、前記制御部58へ入力されるようになっている。
【0050】前記制御部58は、出力停止後の前記発熱
素子35の素子温度が所定の温度に下がるまでの予め決
められた第2の設定温度を記憶している。尚、この第2
の設定温度は、前記操作部61から入力されるようにな
っている。
【0051】前記制御部58は、出力停止後、前記前記
素子温度測定部53から得た前記発熱素子35の素子温
度の測定データが前記第2の設定温度に下がるまで前記
ブザー19を制御し、発熱警告音を発音させるようにな
っている。
【0052】このように構成された医療用処置システム
70の作用を図7を用いて説明する。処置具用制御装置
3が出力を開始した後の時間経過に対する発熱素子35
の温度は、図7に示すように変化する。
【0053】出力開始後、発熱素子35の温度は、上昇
し始めて設定温度で一定になり、出力を停止した後は徐
々に温度が下がっていく。出力停止後、制御部58は、
素子温度測定部53から得た素子温度の測定データが予
め決められた第2の設定温度A、例えば80℃以下に下
がるまで発熱警告音を発音させる。
【0054】この結果、本第2の実施の形態の医療用処
置システム70は、上記第1の実施の形態と同様な効果
を得ることに加え、処置後に発熱処置部の温度が高いこ
とを告知することができる。
【0055】(第3の実施の形態)図8及び図9は本発
明の第3の実施の形態に係り、図8は本発明の第3の実
施の形態を備えた医療用処置システムの全体構成を示す
システム構成図、図9は図8の医療用処置システムで用
いられる処置具の把持部及び発熱処置部を示す説明図で
ある。上記第1、第2の実施の形態では、発熱素子35
を内蔵している凝固切開鉗子2を用いて医療用処置シス
テムを構成しているが、本第3の実施の形態では発熱素
子35を有する発熱処置部が着脱自在な凝固切開鉗子を
用いて医療用処置システムを構成している。それ以外の
構成は、上記第1の実施の形態と同様なので説明を省略
し、同じ構成には同じ符号を付して説明する。
【0056】図8に示すように本第3の実施の形態の医
療用処置システム80は、処置具用制御装置81の前面
パネル3aに発熱処置部異常表示LED82a,82b
を有している。一方、凝固切開鉗子83は、着脱自在な
発熱処置部84a,84bを把持部の両側に取り付ける
ような構成となっている。前記発熱処置部84a,84
bは、それぞれ処置具用制御装置81の前記発熱処置部
異常表示LED82a,82bに対応している。
【0057】図9に示すように前記発熱処置部84a
は、発熱素子35を内蔵している。前記発熱処置部84
aは、前記固定刃本体31aの収納部85aに着脱自在
に取り付けられるようになっている。前記発熱処置部8
4aは、内部で前記発熱素子35に接続している図示し
ないコネクタを外部に有し、前記固定刃本体31aの収
納部85aの図示しないコネクタ受け部に接続可能であ
る。同様に、前記発熱処置部84bも発熱素子35を内
蔵し、前記可動刃本体32aの収納部85bに着脱自在
に取り付けられるようになっている。前記発熱処置部8
4bは、内部で前記発熱素子35に接続している図示し
ないコネクタを外部に有し、前記可動刃本体32aの収
納部85bの図示しないコネクタ受け部に接続可能であ
る。尚、前記発熱処置部84bは、上面に鋸刃部39a
を有している。
【0058】このように構成された医療用処置システム
80の作用を説明する。先ず、発熱処置部84aを固定
刃本体31aの収納部85aに取り付けると共に、発熱
処置部84bを前記可動刃本体32aの収納部85bに
取り付ける。このとき、それぞれのコネクタをコネクタ
受け部に接続する。そして、凝固切開鉗子83のコネク
タ5を処置具用制御装置81のコネクタ受け部11に接
続することで、発熱処置部84a及び発熱処置部84b
に内蔵されている発熱素子35が処置具用制御装置81
に接続される。
【0059】発熱処置部84a,84bに内蔵されてい
る発熱素子35は、図5で説明したように制御駆動され
る。ここで、素子状態検出部52は、発熱処置部84a
又は84bに内蔵されている発熱素子の抵抗値が正常範
囲を超えたことを検出したとき(図5参照)、前記鉗子
異常判別部57は、発熱処置部84a又は84bが破損
したと判別し、この異常信号を制御部58に送信する。
制御部58は、鉗子異常表示LED18aを点灯させる
と共に、ブザー19を発音させて異常を告知する。この
とき、制御部58は、発熱処置部84a又は発熱処置部
84bのどちらが破損したかを告知するために、破損し
た発熱処置部に対応する発熱処置部異常表示LED82
a又は発熱処置部異常表示LED82bを点灯させる。
この表示から使用者は、交換するべき発熱処置部を知る
ことができる。そして、使用者は破損した発熱処置部の
みを交換して使用することができる。
【0060】この結果、本第3の実施の形態の医療用処
置システム80は、交換可能な発熱処置部に対して、破
損した方の発熱処置部を表示することで容易に交換で
き、継続使用することができる。
【0061】尚、本発明は、上記した実施の形態にのみ
限定されるものではなく、本発明の要旨を逸脱しない範
囲で種々変形実施可能である。
【0062】[付記] (付記項1) 生体組織に処置エネルギを付与して処置
するエネルギ付与手段を複数有する処置部及び前記複数
のエネルギ付与手段の数を表す識別子を有し、前記複数
のエネルギ付与手段で発生した処置エネルギを生体組織
に与えて処置する処置具と、この処置具が着脱自在に接
続可能な接続手段及び前記処置具の前記複数のエネルギ
付与手段のそれぞれに対して駆動エネルギを出力する出
力手段を有する処置具用制御装置と、を具備し、前記処
置具の前記識別子を識別し、前記処置具の前記複数のエ
ネルギ付与手段の数を識別する識別手段と、前記処置具
の前記複数のエネルギ付与手段のそれぞれが正常に稼動
可能な状態か否かを検出する検出手段と、前記識別手段
からの識別結果と前記検出手段からの検出結果とを比較
し、この比較結果に基づき、前記出力手段を制御する制
御手段と、を設けたことを特徴とする医療用処置システ
ム。
【0063】(付記項2) 生体組織に処置エネルギを
付与して処置するエネルギ付与手段を複数有する処置部
と、前記複数のエネルギ付与手段の数を表す識別子と、
を具備したことを特徴とする処置具。
【0064】(付記項3) 生体組織を処置するための
熱エネルギを発生する複数の発熱手段及び前記複数の発
熱手段の数を表す識別子を有し、前記複数の発熱手段で
発生した熱エネルギを生体組織に与えて処置する処置具
が着脱自在に接続可能な接続手段と、前記接続手段によ
り接続された前記処置具の前記識別子を識別して前記発
熱手段の数を識別する識別手段と、前記処置具の前記複
数の発熱手段との各々の接続状態を検出する接続状態検
出手段と、前記複数の発熱手段の各々に対して電気エネ
ルギを出力する出力手段と、前記識別手段からの識別結
果と前記接続状態検出手段からの検出結果とに基づき、
前記出力手段を制御する制御手段と、を具備したことを
特徴とする処置具用制御装置。
【0065】(付記項4) 前記制御手段は、前記識別
手段で識別した前記複数のエネルギ付与手段の数情報と
前記検出手段で検出した接続状態の情報とが異なる場合
に出力制御を行うことを特徴とする付記項1に記載の処
置具用制御装置。
【0066】(付記項5) 前記制御手段は、前記複数
のエネルギ付与手段のうち、1つでも異常と判断した場
合に出力制御を行うことを特徴とする付記項1に記載の
処置具用制御装置。
【0067】(付記項6) 前記制御手段は、前記エネ
ルギ付与手段が検出された出力部のみ出力することを特
徴とする付記項4又は5に記載の処置具用制御装置。
【0068】(付記項7) 前記複数のエネルギ付与手
段毎に温度に関連するパラメータを測定する温度パラメ
ータ測定手段を有し、前記制御部は、各々のエネルギ付
与手段が予め設定された温度になるように出力制御する
ことを特徴とする付記項4〜6に記載の処置具用制御装
置。
【0069】(付記項8) 前記複数のエネルギ付与手
段の状態を各々表示する表示手段を有することを特徴と
する付記項4〜7に記載の処置具用制御装置。
【0070】(付記項9) 前記エネルギ付与手段は、
電気抵抗体から構成されることを特徴とする付記項4〜
8に記載の処置具用制御装置。
【0071】(付記項10) 前記検出手段は、前記エ
ネルギ付与手段の抵抗値を検出することで、前記エネル
ギ付与手段との接続状態を検出することを特徴とする付
記項4〜9に記載の処置具用制御装置。
【0072】(付記項11) 前記制御手段は、前記識
別手段で識別した前記複数の発熱手段の数情報と前記接
続状態検出手段で検出した接続状態の情報とが異なる場
合に出力制御を行うことを特徴とする付記項3に記載の
処置具用制御装置。
【0073】(付記項12) 前記制御手段は、前記複
数の発熱手段のうち、1つでも異常と判断した場合に出
力制御を行うことを特徴とする付記項3に記載の処置具
用制御装置。
【0074】(付記項13) 前記制御手段は、前記発
熱手段が検出された出力部のみ出力することを特徴とす
る付記項11又は12に記載の処置具用制御装置。
【0075】(付記項14) 前記複数の発熱手段毎に
温度に関連するパラメータを測定する温度パラメータ測
定手段を有し、前記制御部は、各々の発熱手段が予め設
定された温度になるように出力制御することを特徴とす
る付記項11〜13に記載の処置具用制御装置。
【0076】(付記項15) 前記複数の発熱手段の状
態を各々表示する表示手段を有することを特徴とする付
記項11〜15に記載の処置具用制御装置。
【0077】(付記項16) 前記発熱手段は、電気抵
抗体から構成されることを特徴とする付記項11〜15
に記載の処置具用制御装置。
【0078】(付記項17) 前記接続状態検出手段
は、前記発熱手段の抵抗値を検出することで、前記発熱
手段との接続状態を検出することを特徴とする付記項1
1〜16に記載の処置具用制御装置。
【0079】
【発明の効果】以上説明したように本発明によれば、処
置具の種類をより確実に判断して出力を行うことが可能
な医療用処置システム、処置具及び処置具用制御装置を
実現することができる。
【図面の簡単な説明】
【図1】本発明の第1の実施の形態を備えた医療用処置
システムの全体構成を示すシステム構成図
【図2】図1の医療用処置システムで用いられる処置具
用制御装置の外観図であり、図2(a)は前面パネル側
から見た処置具用制御装置の外観斜視図、図2(b)
は、同図(a)の背面パネルを示す外観図
【図3】図1の医療用処置システムで用いられる処置具
を示す説明図
【図4】図3の処置具の処置部を示す説明断面図であ
り、図4(a)は処置具の処置部を上面から見た上面断
面図、図4(b)は処置具の処置部を側面から見た側面
断面図
【図5】本発明の第1の実施の形態の医療用処置システ
ムを説明する回路ブロック図
【図6】本発明の第2の実施の形態の医療用処置システ
ムを説明する回路ブロック図
【図7】図6の医療用処置システムの作用を説明するグ
ラフ
【図8】本発明の第3の実施の形態を備えた医療用処置
システムの全体構成を示すシステム構成図
【図9】図8の医療用処置システムで用いられる処置具
の把持部及び発熱処置部を示す説明図
【符号の説明】
1 …医療用処置システム 2 …凝固切開鉗子(処置具) 3 …処置具用制御装置 4 …接続ケーブル 5 …コネクタ 11 …コネクタ受け部 35,(35a〜35c)…発熱素子(エネルギ付与手
段) 38 …発熱処置部 42 …素子数識別子 51 …素子数識別部 52,(52a〜52d)…素子状態検出部 53,(53a〜53d)…素子温度測定部 54,(54a〜54d)…素子温度制御部 55,(54a〜54d)…出力部 56 …温度設定部 57 …鉗子異常判別部 58 …制御部

Claims (3)

    【特許請求の範囲】
  1. 【請求項1】 生体組織に処置エネルギを付与して処置
    するエネルギ付与手段を複数有する処置部及び前記複数
    のエネルギ付与手段の数を表す識別子を有し、前記複数
    のエネルギ付与手段で発生した処置エネルギを生体組織
    に与えて処置する処置具と、 この処置具が着脱自在に接続可能な接続手段及び前記処
    置具の前記複数のエネルギ付与手段のそれぞれに対して
    駆動エネルギを出力する出力手段を有する処置具用制御
    装置と、 を具備し、 前記処置具の前記識別子を識別し、前記処置具の前記複
    数のエネルギ付与手段の数を識別する識別手段と、 前記処置具の前記複数のエネルギ付与手段のそれぞれが
    正常に稼動可能な状態か否かを検出する検出手段と、 前記識別手段からの識別結果と前記検出手段からの検出
    結果とを比較し、この比較結果に基づき、前記出力手段
    を制御する制御手段と、 を設けたことを特徴とする医療用処置システム。
  2. 【請求項2】 生体組織に処置エネルギを付与して処置
    するエネルギ付与手段を複数有する処置部と、 前記複数のエネルギ付与手段の数を表す識別子と、 を具備したことを特徴とする処置具。
  3. 【請求項3】 生体組織を処置するための熱エネルギを
    発生する複数の発熱手段及び前記複数の発熱手段の数を
    表す識別子を有し、前記複数の発熱手段で発生した熱エ
    ネルギを生体組織に与えて処置する処置具が着脱自在に
    接続可能な接続手段と、 前記接続手段により接続された前記処置具の前記識別子
    を識別して前記発熱手段の数を識別する識別手段と、 前記処置具の前記複数の発熱手段との各々の接続状態を
    検出する接続状態検出手段と、 前記複数の発熱手段の各々に対して電気エネルギを出力
    する出力手段と、 前記識別手段からの識別結果と前記接続状態検出手段か
    らの検出結果とに基づき、前記出力手段を制御する制御
    手段と、 を具備したことを特徴とする処置具用制御装置。
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