JPS61263444A - Body cavity pressure adjusting apparatus of laser treatment apparatus - Google Patents
Body cavity pressure adjusting apparatus of laser treatment apparatusInfo
- Publication number
- JPS61263444A JPS61263444A JP60105301A JP10530185A JPS61263444A JP S61263444 A JPS61263444 A JP S61263444A JP 60105301 A JP60105301 A JP 60105301A JP 10530185 A JP10530185 A JP 10530185A JP S61263444 A JPS61263444 A JP S61263444A
- Authority
- JP
- Japan
- Prior art keywords
- body cavity
- laser
- pressure
- protective pipe
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- Radiation-Therapy Devices (AREA)
- Surgical Instruments (AREA)
- Laser Surgery Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「技術分野」
本発明は、レーザ光によって体腔内の患部を治療する装
置に関し、特に体腔内に送気したガスの圧力を調整する
ための装置に関する。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a device for treating an affected area within a body cavity with laser light, and more particularly to a device for adjusting the pressure of gas delivered into a body cavity.
「従来技術およびその問題点」
この種のレーザ治療装置は、一般にレーザメスとして知
られ、体腔内の治療用に用いる場合には、内視鏡のチャ
ンネル（チューブ）を介してレーザパワ伝送用ファイバ
（以下レーザファイバという）を体腔内に挿入している
。このレーザファイバは、その先端に患部から飛散した
異物等が付着して熱的破損が生じるのを防止すべく、保
護パイプ内に挿入し、さらにこの保護パイプとレーザフ
ァイバとの間の隙間から、体腔内に空気その他の送気ガ
スを噴射して異物の付着を防止するのが一般的である。"Prior Art and its Problems" This type of laser treatment device is generally known as a laser scalpel, and when used for treatment inside a body cavity, it is used to transmit laser power through a fiber (hereinafter referred to as "laser power transmission fiber") through a channel (tube) of an endoscope. A laser fiber (called a laser fiber) is inserted into the body cavity. This laser fiber is inserted into a protective pipe in order to prevent thermal damage caused by foreign matter scattered from the affected area adhering to its tip, and further, from the gap between the protective pipe and the laser fiber, Generally, air or other insufflation gas is injected into the body cavity to prevent foreign matter from adhering to it.
この装置により、例えば各種胃疾患のレーザ照射による
治療を行なうと、送気ガスが胃内に充満するため、胃壁
が伸展し、細管が破れて出血したり、胃の異常な緊張状
態で患者が苦痛を訴えたり、ざらには、胃壁が伸展する
ため微細な粘膜の変化を忠実に捕えることができず、内
視鏡下の胃炎診断治療において正確さを欠く等の不都合
が生じる。このため胃内に送気したガスを回収し、胃内
を常時一定の範囲の圧力に保つ必要がある。このため従
来、例えば２チヤンネルの内視鏡を用い、１つのチャン
ネルはレーザファイバ用、他の１つのチャンネルはガス
吸引用として用いていた。しかしこれらの方法における
体腔内圧の調整は、術者が、内視鏡による体腔内の観察
像からの判断で行なわなければならないため、術者の負
担が増えるという欠点がある。また２チヤンネルの内視
鏡はどうしても体内挿入管の外径が大きくなり、これを
体腔内に挿入する際、患者に与える苦痛が大きくなる。For example, when using this device to treat various gastric diseases with laser irradiation, the insufflation gas fills the stomach, causing the stomach wall to stretch, rupturing tubules and causing bleeding, or causing the patient to experience abnormal tension in the stomach. Patients may complain of pain, and furthermore, because the stomach wall stretches, minute changes in the mucous membrane cannot be accurately detected, leading to inconveniences such as a lack of accuracy in endoscopic diagnosis and treatment of gastritis. For this reason, it is necessary to recover the gas sent into the stomach and maintain the pressure within the stomach within a constant range. For this reason, conventionally, for example, a two-channel endoscope has been used, with one channel used for the laser fiber and the other channel used for gas suction. However, the adjustment of the intrabody cavity pressure in these methods requires the operator to make judgments based on images observed inside the body cavity using an endoscope, which has the disadvantage of increasing the burden on the operator. Furthermore, in a two-channel endoscope, the outer diameter of the tube for insertion into the body is large, which causes great pain to the patient when inserting the tube into the body cavity.
また１チヤンネルの内視鏡では、送気ガスの吸引用に、
胃ゾンデのようなパイプを別途胃内に挿入する必要があ
り、このため患者の苦痛と術者の労力とが重なるという
問題があった。In addition, in a single channel endoscope, for suctioning the insufflation gas,
It is necessary to separately insert a pipe such as a gastric probe into the stomach, which poses a problem in that the patient's pain and the operator's labor are compounded.
最近はこのような問題点から、体腔内圧力を測定して送
排気量を調整する自動調圧装置も提案されている。しか
しこれらはレーザファイバ保護パイプの外側にさらにチ
ューブを被せて体腔内圧力を外部へ導き、排気量を調整
するものであるため、２重管構造となって外径が太くな
る。このため使用できる内視鏡が限られ、かつ排気には
胃ゾンデが必要で、操作が煩雑となり患者の負担も大き
いという欠点があった。Recently, in view of these problems, an automatic pressure regulating device has been proposed that measures the pressure inside the body cavity and adjusts the amount of pumping and exhausting. However, in these systems, a tube is placed over the outside of the laser fiber protection pipe to guide the pressure inside the body cavity to the outside and adjust the exhaust volume, so they have a double-tube structure and have a large outer diameter. As a result, the number of endoscopes that can be used is limited, and a gastric tube is required for evacuation, making the operation complicated and placing a heavy burden on the patient.
「発明の目的」
本発明は、このような従来装置についての問題意識に基
づき、２チヤンネルの内視鏡や、胃ゾンデ等の特別な排
気装置を用いることなく、体腔内圧を自動調整できる装
置を得ることを目的とする。``Object of the Invention'' Based on the awareness of the problems with such conventional devices, the present invention provides a device that can automatically adjust the intrabody cavity pressure without using a two-channel endoscope or a special exhaust device such as a gastric probe. The purpose is to obtain.
「発明の概要」
本発明は、レーザファイバと、このファイバを挿入した
保護パイプの間の隙間を通して送気する場合、保護パイ
プ中の圧力をその長手方向の位置を異ならせた二点で測
定することにより、間接的に体腔内圧力を検知できると
いう知見に基づきなされたもので、保護パイプに一定距
離離間させて少なくとも二つの圧力センサを設けるとと
もに、保護パイプと、このパイプを挿通する体腔内に達
するチューブ体との間の隙間を流量制御装置を介して吸
引装置に連結し、この流量制御装置を圧力・ センナの
出力によって制御するようにしたことを特徴としている
。"Summary of the Invention" The present invention measures the pressure in the protection pipe at two different positions in the longitudinal direction when air is supplied through the gap between a laser fiber and a protection pipe into which this fiber is inserted. This was done based on the knowledge that the pressure inside the body cavity can be indirectly detected by installing at least two pressure sensors spaced apart from each other by a certain distance in the protection pipe, and by installing a pressure sensor between the protection pipe and the body cavity through which this pipe is inserted. It is characterized in that the gap between the reaching tube and the suction device is connected to the suction device via a flow rate control device, and this flow rate control device is controlled by pressure and the output of the senna.
「発明の実施例」
以下図示実施例について本発明を説明する０図は本発明
の体腔内圧調整装置を内視鏡１０の鉗子チャンネル（チ
ューブ体）１１に挿入したセット状態を示している。鉗
子チャンネルｌｌ内には、内部にレーザファイバ１２を
挿通した保護パイプ１３が挿入されている。レーザファ
イバ１２は、レーザ発振器１４から出射され集光レンズ
１５により集光されたレーザ光を体腔（例えば胃）１６
内の患部まで導く、保護パイプ１３は例えば合成樹脂か
らなるもので、レーザファイバ１２との間に送気用の空
隙を有しており、この保護パイプ１３の後端部に、中継
管１７を介して送気ポンプ１８の送気管１９が接続され
ている。また保護パイプ１３の先端は、レーザファイバ
１２を保護すべく、該ファイバ１２より突出している。Embodiments of the Invention The present invention will be explained below with reference to the illustrated embodiments. Figure 0 shows a set state in which the body cavity pressure adjusting device of the present invention is inserted into a forceps channel (tube body) 11 of an endoscope 10. A protection pipe 13 through which a laser fiber 12 is inserted is inserted into the forceps channel 11. The laser fiber 12 directs the laser beam emitted from the laser oscillator 14 and focused by the condensing lens 15 into a body cavity (for example, the stomach) 16.
The protective pipe 13 that leads to the affected area is made of synthetic resin, for example, and has an air gap between it and the laser fiber 12. A relay pipe 17 is connected to the rear end of the protective pipe 13. An air supply pipe 19 of an air supply pump 18 is connected thereto. Further, the tip of the protection pipe 13 protrudes from the laser fiber 12 in order to protect the laser fiber 12.
送気ポンプ１８は空気以外の不活性ガスを送気する場合
は、例えばそのガスのボンベと置き換えられる。When the air supply pump 18 supplies an inert gas other than air, it may be replaced with a cylinder of the gas, for example.
この保護パイプ１３には、その長手方向に一定距離離間
１だけ離して、第一、第二の圧力センナ２１．２２が気
密性を保って接続されており、この圧力センサ２１．２
２の出力は信号処理回路２３に入力される。First and second pressure sensors 21.22 are connected to the protective pipe 13 at a fixed distance 1 in the longitudinal direction thereof while maintaining airtightness.
The output of 2 is input to the signal processing circuit 23.
他方、内視鏡１０には、鉗子チャンネル１１内に連通ず
る排気口２４が開口している。この排気口２４は、圧力
センサ２１．２２より、体腔１６側に位置している。こ
の排気口２４は、排気管２５を介して流量制御装置２６
に接続され、流量制御装置２６は吸引ポンプ２７に接続
されている。したがって吸引ポンプ２７を駆動すると、
流量制御装置２６の制御状態に応じ、体腔１６内のガス
を鉗子チャンネル１１と保護パイプ１３の間の隙間から
外部に導くことができる。そしてこの流量制御装置ｉ２
６を信号処理回路２３によって次のように制御するので
ある。On the other hand, the endoscope 10 has an exhaust port 24 that communicates with the forceps channel 11 . This exhaust port 24 is located closer to the body cavity 16 than the pressure sensor 21.22. This exhaust port 24 is connected to a flow rate control device 26 via an exhaust pipe 25.
The flow rate control device 26 is connected to a suction pump 27 . Therefore, when the suction pump 27 is driven,
Depending on the control state of the flow rate control device 26, gas within the body cavity 16 can be led to the outside through the gap between the forceps channel 11 and the protection pipe 13. And this flow control device i2
6 is controlled by the signal processing circuit 23 as follows.
すなわち上記構成の本装置は、送気ポンプ１８を駆動す
ると、送気管１９を介して空気が中継管１７に送られ、
ざらにレーザファイバ１２と保護パイプ１３の隙間を通
って体腔１６内に送られる。体腔１６内に送られた空気
は、今度は鉗子チャンネル１１と保護パイプ１３の間の
隙間を通って排気口２４に至り、排気管２５から流量制
御装置２６を介して吸引ポンプ２７に吸引され、大気中
に排気される。したがって流量制御装置２６により、体
腔１６内からの空気の排出量を制御することにより、体
腔１６内圧力を制御できる。That is, in this device having the above configuration, when the air pump 18 is driven, air is sent to the relay pipe 17 via the air pipe 19,
It is sent into the body cavity 16 roughly through the gap between the laser fiber 12 and the protection pipe 13. The air sent into the body cavity 16 then passes through the gap between the forceps channel 11 and the protection pipe 13, reaches the exhaust port 24, and is sucked from the exhaust pipe 25 to the suction pump 27 via the flow rate controller 26. Exhausted into the atmosphere. Therefore, by controlling the amount of air discharged from the body cavity 16 using the flow rate control device 26, the pressure inside the body cavity 16 can be controlled.
信号処理回路２３は、圧力センサ２１．２２の圧力信号
を受けて、体腔１６内の圧力を一定に保持するように流
量制御装置２６を制御するものである。いま圧力センサ
２１と２２間の距離をｉｌ、圧力センサ２２から体腔１
６内に至る距離（保護パイプ１３の先端迄の距離）をｆ
Ｌ２とし、圧力センサ２１および２２における保護パイ
プ１３内の圧力をそれぞれＰｌ、Ｐ２とする。保護パイ
プ１３内の圧力損失がその全長に渡って一様に生じると
仮定すると、保護パイプエ３の先端、つまり体腔１６内
の圧力Ｐ３は、ΔＰ−ＰＩ−ρ２として、Ｐ３＝ＰＬ−
ΔＰ（１２７文１） ■で与えられる。The signal processing circuit 23 receives pressure signals from the pressure sensors 21 and 22 and controls the flow rate control device 26 so as to maintain the pressure within the body cavity 16 constant. Now, the distance between the pressure sensors 21 and 22 is il, and the distance from the pressure sensor 22 to the body cavity 1 is
6 (distance to the tip of the protective pipe 13) is f
Let L2 be the pressure inside the protection pipe 13 at the pressure sensors 21 and 22, respectively. Assuming that the pressure loss within the protective pipe 13 occurs uniformly over its entire length, the pressure P3 at the tip of the protective pipe 3, that is, within the body cavity 16, is expressed as ΔP-PI-ρ2, P3=PL-
ΔP (127 sentences 1) is given by ■.
よって、文１、交２を一定にしておけば、Ｐｌ、Ｐ２、
およびその差を測定することにより、体腔１６内圧力を
間接的に検知することができる。したがって、信号処理
回路２３により、流量制御装置２６の流量を制御すれば
１体腔１６内の圧力を所望の一定値に保持することがで
きる。Therefore, if we keep sentence 1 and intersection 2 constant, Pl, P2,
By measuring this difference, the pressure inside the body cavity 16 can be indirectly detected. Therefore, by controlling the flow rate of the flow rate control device 26 using the signal processing circuit 23, the pressure within one body cavity 16 can be maintained at a desired constant value.
勿論上記０式は、保護パイプ１３の曲折の程度等を勘案
して、実験的に補正することができる。Of course, the above equation 0 can be corrected experimentally by taking into account the degree of bending of the protection pipe 13, etc.
この補正のために、１３の曲折部の先にも圧力センサを
設け、この圧力センサの出力を補正に用いることができ
る。For this correction, a pressure sensor is also provided at the end of the 13 bent portions, and the output of this pressure sensor can be used for the correction.
「発明の効果」
以上のように本発明の体腔内圧調整装置は、内視鏡を介
してレーザ治療を行なうレーザ治療装置において、レー
ザファイバとこれの保護パイプの間の隙間の圧力を複数
の異なる点で測定することにより、体腔内圧力を検知し
、この検知圧力に応じて、体腔からの排気量を制御する
流量制御装置を制御するものであるから、体腔内圧力の
測定のために流路を閉じることなく、自動的に体°腔内
圧力を一定値に保持することが可能となる。また排気専
用のチャンネルや、吸引用ゾンデの併用の必〈＼
要がないから、従来広く用いられている１チヤンネルの
内視鏡によって、体腔内のレーザ治療が可能となる。そ
して１チヤンネルの内視鏡は、２チヤンネルのそれに比
べ、その体内挿入管の外径が細いため、患者に与える苦
痛を減することができ、また術者の労力も軽減されるか
ら、内視鏡使用のレーザ治療をより簡単に、多くの患者
に施すことが可能となる。``Effects of the Invention'' As described above, the body cavity pressure adjusting device of the present invention can adjust the pressure in the gap between the laser fiber and its protective pipe in a plurality of different ways in a laser treatment device that performs laser treatment via an endoscope. The pressure inside the body cavity is detected by measuring at a point, and the flow control device that controls the amount of exhaust from the body cavity is controlled according to this detected pressure. It becomes possible to automatically maintain the pressure inside the body cavity at a constant value without closing the body cavity. Furthermore, since there is no need for a dedicated exhaust channel or the use of a suction sonde, laser treatment within the body cavity becomes possible with the conventionally widely used single-channel endoscope. One-channel endoscopes have a smaller outer diameter of the tube inserted into the body than two-channel endoscopes, which reduces pain for the patient and reduces the labor required for the operator. Laser therapy using a mirror can be more easily administered to many patients.
図は本発明のレーザ治療装置の体腔内圧調整装置の実施
例を示す系統接続図である。
１０・・・内視鏡、ｌｌ・・・鉗子チャンネル（チュー
ブ体）、１２・・・レーザファイバ、１３・・・保護パ
イプ、１６・・・体腔、１８・・・送気ポンプ、２１．
２２・・・圧力センサ、２３・・・信号処理回路、２４
・・・排気口、２５・・・排気管、２６・・・流量制御
装置、２７・・・吸引ポンプ。
特許出願人 旭光学工業株式会社
同代理人 三 浦 邦 夫
同 松井 茂The figure is a system connection diagram showing an embodiment of the body cavity pressure adjusting device of the laser treatment device of the present invention. 10... Endoscope, ll... Forceps channel (tube body), 12... Laser fiber, 13... Protective pipe, 16... Body cavity, 18... Air supply pump, 21.
22... Pressure sensor, 23... Signal processing circuit, 24
...Exhaust port, 25...Exhaust pipe, 26...Flow rate control device, 27...Suction pump. Patent applicant: Asahi Optical Industry Co., Ltd. Agents: Kunio Miura and Shigeru Matsui
Claims (1)
を、さらに体腔内に達するチューブ体に挿通し、上記保
護パイプとレーザパワ伝送用ファイバとの間の隙間から
体腔内に送気するとともに、上記レーザパワ伝送用ファ
イバの先端から出射されるレーザ光により患部の治療を
行なうレーザ治療装置において、上記保護パイプに一定
距離離間させて少なくとも２つの圧力センサを設けると
ともに、保護パイプと上記チューブ体との間の隙間を流
量制御装置を介して吸引装置に連結し、さらに上記圧力
センサの出力に応じ上記流量制御装置を制御する信号処
理手段を設けたことを特徴とするレーザ治療装置の体腔
内圧調整装置。(1) The protective pipe through which the laser power transmission fiber has been inserted is further inserted into the tube body that reaches into the body cavity, and air is supplied into the body cavity through the gap between the protective pipe and the laser power transmission fiber, and the laser power transmission In a laser treatment device that treats an affected area with laser light emitted from the tip of a fiber, at least two pressure sensors are provided on the protective pipe at a certain distance apart, and a gap between the protective pipe and the tube body is provided. A body cavity pressure adjustment device for a laser treatment device, characterized in that the body cavity pressure adjustment device is connected to a suction device via a flow rate control device, and further includes signal processing means for controlling the flow rate control device in accordance with the output of the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60105301A JPS61263444A (en) | 1985-05-17 | 1985-05-17 | Body cavity pressure adjusting apparatus of laser treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60105301A JPS61263444A (en) | 1985-05-17 | 1985-05-17 | Body cavity pressure adjusting apparatus of laser treatment apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61263444A true JPS61263444A (en) | 1986-11-21 |
| JPH0463712B2 JPH0463712B2 (en) | 1992-10-12 |
Family
ID=14403869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60105301A Granted JPS61263444A (en) | 1985-05-17 | 1985-05-17 | Body cavity pressure adjusting apparatus of laser treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61263444A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06232487A (en) * | 1993-02-02 | 1994-08-19 | Gijutsu Kenkyu Kumiai Iryo Fukushi Kiki Kenkyusho | Laser irradiating system |
| JP2013518684A (en) * | 2010-02-04 | 2013-05-23 | プロセプト コーポレイション | Multifluid tissue resection method and device |
| US9510853B2 (en) | 2009-03-06 | 2016-12-06 | Procept Biorobotics Corporation | Tissue resection and treatment with shedding pulses |
| US10342615B2 (en) | 2008-03-06 | 2019-07-09 | Aquabeam, Llc | Tissue ablation and cautery with optical energy carried in fluid stream |
| US10524822B2 (en) | 2009-03-06 | 2020-01-07 | Procept Biorobotics Corporation | Image-guided eye surgery apparatus |
| US10653438B2 (en) | 2012-02-29 | 2020-05-19 | Procept Biorobotics Corporation | Automated image-guided tissue resection and treatment |
-
1985
- 1985-05-17 JP JP60105301A patent/JPS61263444A/en active Granted
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06232487A (en) * | 1993-02-02 | 1994-08-19 | Gijutsu Kenkyu Kumiai Iryo Fukushi Kiki Kenkyusho | Laser irradiating system |
| US10321931B2 (en) | 2007-01-02 | 2019-06-18 | Aquabeam, Llc | Minimally invasive methods for multi-fluid tissue ablation |
| US11350964B2 (en) | 2007-01-02 | 2022-06-07 | Aquabeam, Llc | Minimally invasive treatment device for tissue resection |
| US11478269B2 (en) | 2007-01-02 | 2022-10-25 | Aquabeam, Llc | Minimally invasive methods for multi-fluid tissue ablation |
| US9232959B2 (en) | 2007-01-02 | 2016-01-12 | Aquabeam, Llc | Multi fluid tissue resection methods and devices |
| US9364250B2 (en) | 2007-01-02 | 2016-06-14 | Aquabeam, Llc | Minimally invasive devices for the treatment of prostate diseases |
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| JP2013518684A (en) * | 2010-02-04 | 2013-05-23 | プロセプト コーポレイション | Multifluid tissue resection method and device |
| US10653438B2 (en) | 2012-02-29 | 2020-05-19 | Procept Biorobotics Corporation | Automated image-guided tissue resection and treatment |
| US11464536B2 (en) | 2012-02-29 | 2022-10-11 | Procept Biorobotics Corporation | Automated image-guided tissue resection and treatment |
| US11737776B2 (en) | 2012-02-29 | 2023-08-29 | Procept Biorobotics Corporation | Automated image-guided tissue resection and treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0463712B2 (en) | 1992-10-12 |
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