JPH0615468A - Incision depth monitor - Google Patents
Incision depth monitorInfo
- Publication number
- JPH0615468A JPH0615468A JP4175503A JP17550392A JPH0615468A JP H0615468 A JPH0615468 A JP H0615468A JP 4175503 A JP4175503 A JP 4175503A JP 17550392 A JP17550392 A JP 17550392A JP H0615468 A JPH0615468 A JP H0615468A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- handpiece
- irradiated
- incision
- incision depth
- 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
Landscapes
- Laser Surgery Devices (AREA)
- Surgical Instruments (AREA)
- Laser Beam Processing (AREA)
Abstract
(57)【要約】
【目的】 切開溝の切開深度の測定誤差を大幅に低減す
ることのできる切開深度監視装置を提供する。
【構成】 レーザビームを先端から被切開物の被照射部
位に照射するハンドピース３と、ハンドピース３に設け
られレーザビームの被照射部位への照射時に被照射部位
で発生して空中を伝播する音波を検出するトランスデュ
ーサと、トランスデューサから出力される検出信号に基
づいて被照射部位の切開深度を演算する演算手段とを備
える。そして、ハンドピース３には、レーザビームの被
照射部位への照射時に被照射部位から発生する飛散物９
を除去して切開深度の測定誤差を低減するアシストガス
導入管１６０と開口部１６１とを設ける。
(57) [Summary] [Objective] To provide an incision depth monitoring device capable of significantly reducing the measurement error of the incision depth of an incision groove. A handpiece 3 for irradiating an irradiation site of an incision with a laser beam from a tip, and a handpiece 3 which is provided on the handpiece 3 and is generated in the irradiation site when the laser beam is irradiated to the irradiation site and propagates in the air. A transducer that detects a sound wave and a calculation unit that calculates the incision depth of the irradiation site based on a detection signal output from the transducer are provided. Then, the handpiece 3 has a scattered object 9 generated from the irradiation site when the laser beam is irradiated to the irradiation site.
Is provided to reduce the measurement error of the incision depth, and an assist gas introduction pipe 160 and an opening 161 are provided.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、物体をレーザビームで
加工する際に物体の加工状態を監視する切開深度監視装
置に関し、より詳しくは、ハンドピースやレーザ加工用
ノズル等の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incision depth monitoring device for monitoring the processing state of an object when processing the object with a laser beam, and more particularly to improvements in a handpiece, a laser processing nozzle and the like. is there.
【０００２】[0002]
【従来の技術】レーザビームを使用した図５の骨切開手
術を例に従来における切開深度監視装置を説明する。従
来における切開深度監視装置のエキシマレーザ１はパル
ス発振レーザ装置であり、このエキシマレーザ１から発
振されたレーザ光は、多関節ミラー方式のマニピュレー
タや光ファイバ等から構成された導光路２に導かれてハ
ンドピース３に伝送され、このハンドピース３の集光用
レンズ４で集光されてレーザビーム５となり、このレー
ザビーム５がハンドピース３の先端から被切開物である
骨皮質６に照射される。2. Description of the Related Art A conventional incision depth monitoring device will be described by taking the bone incision operation of FIG. 5 using a laser beam as an example. An excimer laser 1 of a conventional incision depth monitoring device is a pulse oscillation laser device, and laser light oscillated from this excimer laser 1 is guided to a light guide path 2 composed of an articulated mirror type manipulator, an optical fiber, or the like. Is transmitted to the handpiece 3 and is condensed by the condensing lens 4 of the handpiece 3 into a laser beam 5, which is radiated from the tip of the handpiece 3 to the bone cortex 6 as the incision. It
【０００３】この状態でハンドピース３の先端を図示し
ない術者が骨皮質６の表面に沿って移動させると、切開
溝７が形成されるが、この切開溝７の形成の際、被照射
部位８から飛散物９が発生する。この飛散物９がハンド
ピース３の内部に滞留すると、引き続き照射されるレー
ザビーム５が遮蔽され、骨皮質６に照射されるエネルギ
ーが実質的に減少する。In this state, when an operator (not shown) moves the tip of the handpiece 3 along the surface of the bone cortex 6, an incision groove 7 is formed. When the incision groove 7 is formed, the irradiated area is formed. The scattered matter 9 is generated from 8. When the scattered matter 9 stays inside the handpiece 3, the laser beam 5 that is continuously irradiated is shielded and the energy that is irradiated to the bone cortex 6 is substantially reduced.
【０００４】また、上記レーザビーム５の照射に伴い被
照射部位８では音波が発生し、この音波が空中を伝播し
て空中伝播音１０となる。この空中伝播音１０は、ハン
ドピース３のトランスデューサ１１に検出されて音響信
号１２となり、この音響信号１２が基準信号としてエキ
シマレーザ１のトリガ信号１３を入力した演算回路（演
算手段）１４に入力され、演算回路１４が空中伝播音１
０の到達時間の遅れ△ｔを計測する。Along with the irradiation of the laser beam 5, a sound wave is generated in the irradiated area 8, and this sound wave propagates in the air to become an airborne sound 10. This airborne sound 10 is detected by the transducer 11 of the handpiece 3 and becomes an acoustic signal 12, and this acoustic signal 12 is input to an arithmetic circuit (arithmetic means) 14 to which the trigger signal 13 of the excimer laser 1 is input as a reference signal. , The arithmetic circuit 14 transmits the airborne sound 1
The delay Δt of the arrival time of 0 is measured.
【０００５】一方、エキシマレーザ１からレーザビーム
５のパルスエネルギーの値がデータライン１５を通じて
演算回路１４に入力される。上記の時間遅れ△ｔと切開
溝７の切開深度ｄとの間には、次の（１）式の関係が近
似的に成立することが実験により明らかになっている。On the other hand, the value of the pulse energy of the laser beam 5 from the excimer laser 1 is input to the arithmetic circuit 14 through the data line 15. It has been clarified by experiments that the relationship of the following equation (1) is approximately established between the time delay Δt and the cutting depth d of the cutting groove 7.
【０００６】ｄ＝ｋ1 ・△ｔ＋ｋ2
…（１） ここで、ｋ1 及
びｋ2 はレーザビーム５のパルスエネルギーの関数であ
る。ｋ1 の値はパルスエネルギーの増加に伴い増加する
ことが実験により判明している。また、パルスエネルギ
ーに応じたｋ1 及びｋ2 の値は演算回路１４に予めメモ
リされている。D = k 1 · Δt + k 2
(1) Here, k 1 and k 2 are functions of the pulse energy of the laser beam 5. Experiments have shown that the value of k 1 increases with increasing pulse energy. The values of k 1 and k 2 corresponding to the pulse energy are stored in the arithmetic circuit 14 in advance.
【０００７】然して、演算回路１４は、データライン１
５を通じて入力されたパルスエネルギーに適したｋ1 及
びｋ2 を用い、（１）式の関係に基づいて切開溝７の切
開深度ｄをリアルタイムに演算することができる。Therefore, the arithmetic circuit 14 has the data line 1
The incision depth d of the incision groove 7 can be calculated in real time based on the relationship of the equation (1) using k 1 and k 2 suitable for the pulse energy input through 5.
【０００８】しかしながら、上記したように、飛散物９
がハンドピース３の内部に滞留し、引き続き照射される
レーザビーム５が遮蔽されて照射条件が悪化し、骨皮質
６に照射されるエネルギーが実質的に減少すると、演算
回路１４が用いたｋ1 の値は不適当となり（実際より大
きい値を用いていることになるから）、切開溝７の切開
深度ｄの測定誤差（ここでは過大評価）が生じることに
なる。また、該照射条件が悪化すると、トランスデュー
サ１１に至る音波の伝播経路の密度が不規則に変動し、
切開溝７の切開深度ｄの測定誤差が生じることになる。However, as described above, the scattered matter 9
Remains inside the handpiece 3 and the laser beam 5 to be continuously irradiated is shielded to deteriorate the irradiation condition, and when the energy irradiated to the bone cortex 6 is substantially reduced, k 1 used by the arithmetic circuit 14 is used. The value of is unsuitable (because a value larger than the actual value is used), and a measurement error (here, an overestimation) of the cutting depth d of the cutting groove 7 occurs. Further, when the irradiation condition deteriorates, the density of the propagation path of the sound wave reaching the transducer 11 fluctuates irregularly,
A measurement error of the cutting depth d of the cutting groove 7 will occur.
【０００９】そして、従来における切開深度監視装置に
は、被照射部位８から飛散する飛散物９が切開深度ｄの
測定に与える影響に関して特別な対策が何等施されてい
なかった。尚、この種の先行技術文献として特開平２−
１９２８８８号公報がある。The conventional incision depth monitoring device has not taken any special measures for the influence of the scattered matter 9 scattered from the irradiated region 8 on the measurement of the incision depth d. As a prior art document of this type, Japanese Patent Laid-Open No.
There is 192888 publication.
【００１０】[0010]
【発明が解決しようとする課題】従来における切開深度
監視装置は以上のように構成され、被照射部位８から飛
散する飛散物９が切開溝７の切開深度ｄの測定に与える
影響に関して特別な対策を何等有していないので、切開
溝７の切開深度ｄの測定誤差が生じてしまうという問題
点があった。The conventional incision depth monitoring device is constructed as described above, and special measures are taken regarding the influence of the scattered matter 9 scattered from the irradiated portion 8 on the measurement of the incision depth d of the incision groove 7. However, there is a problem in that a measurement error of the incision depth d of the incision groove 7 occurs.
【００１１】本発明は上記に鑑みなされたもので、切開
深度の測定誤差を大幅に低減することのできる切開深度
監視装置を提供することを目的としている。The present invention has been made in view of the above, and an object of the present invention is to provide an incision depth monitoring device capable of significantly reducing the measurement error of the incision depth.
【００１２】[0012]
【課題を解決するための手段】本発明においては上述の
目的を達成するため、レーザビームを先端から被切開物
の被照射部位に照射する筒体と、この筒体に設けられ該
レーザビームの被照射部位への照射時に被照射部位で発
生して空中を伝播する音波を検出するトランスデューサ
と、このトランスデューサから出力される検出信号に基
づいて該被照射部位の切開深度を演算する演算手段とを
備え、しかも、該筒体には、レーザビームの被照射部位
への照射時に被照射部位から発生する飛散物を除去して
切開深度の測定誤差を低減する飛散物除去手段を設けた
ことを特徴としている。In order to achieve the above-mentioned object in the present invention, a cylinder for irradiating a laser beam from a tip to an irradiated portion of an object to be incised, and a laser beam provided in the cylinder for the laser beam. A transducer that detects a sound wave that is generated in the irradiation site and propagates in the air during irradiation to the irradiation site, and a calculation unit that calculates the incision depth of the irradiation site based on a detection signal output from the transducer. In addition, the cylindrical body is provided with scattered object removing means for removing scattered objects generated from the irradiation site when the laser beam is applied to the irradiation site to reduce measurement error of the incision depth. I am trying.
【００１３】また、本発明においては上述の目的を達成
するため、上記飛散物除去手段を、筒体に設けられ被照
射部位に噴射される圧力流体を当該筒体の内部に供給す
る圧力流体供給手段と、筒体の先端に形成されてトラン
スデューサの下方に位置し、圧力流体と飛散物を当該筒
体の内部から外部に導く開口部とから構成したことを特
徴としている。Further, in the present invention, in order to achieve the above-mentioned object, the above-mentioned scattered material removing means is provided in the cylindrical body, and the pressure fluid is supplied to the inside of the cylindrical body to supply the pressure fluid injected to the irradiated portion. It is characterized in that it is composed of a means and an opening which is formed at the tip of the cylindrical body and is located below the transducer and which guides the pressure fluid and the scattered matter from the inside of the cylindrical body to the outside.
【００１４】また、本発明においては上述の目的を達成
するため、上記飛散物除去手段を、筒体の先端に設けら
れてトランスデューサの下方に位置し、当該筒体の内部
における被照射部位周辺の空気と飛散物を外部に排出す
る排出手段と、筒体に穿設され当該筒体の内部に空気を
供給する空気取り入れ孔とから構成したことを特徴とし
ている。Further, in the present invention, in order to achieve the above-mentioned object, the scattered material removing means is provided at the tip of the cylindrical body and is located below the transducer, and is located inside the cylindrical body around the irradiated portion. It is characterized in that it is composed of a discharge means for discharging the air and the scattered matter to the outside, and an air intake hole which is formed in the cylindrical body and supplies air to the inside of the cylindrical body.
【００１５】[0015]
【作用】本発明によれば、飛散物が流下してくるアシス
トガスの流れに順応し、アシストガスとともにハンドピ
ースの内部から開口部を経由して外部に確実に排出され
るので、引き続き照射されるレーザビームが飛散物に遮
蔽されず、照射条件の悪化を防止でき、骨皮質にエネル
ギーの殆どが照射されることとなる。然して、演算回路
で演算される切開深度の測定誤差を大幅に低減すること
ができる。また、ハンドピースの窄んだ周壁先端に開口
部が切り欠かれてトランスデューサの下方に位置してい
るので、飛散物のトランスデューサに対する影響を確実
に防止することが可能となる。According to the present invention, the scattered matter adapts to the flow of the assist gas flowing down, and is reliably discharged together with the assist gas from the inside of the handpiece through the opening to the outside. The laser beam generated is not shielded by scattered objects, deterioration of irradiation conditions can be prevented, and most of the energy is applied to the bone cortex. However, the measurement error of the incision depth calculated by the arithmetic circuit can be significantly reduced. Further, since the opening is cut out at the tip of the peripheral wall of the handpiece that is constricted and located below the transducer, it is possible to reliably prevent the scattered matter from affecting the transducer.
【００１６】また、本発明によれば、飛散物が吸引され
る空気の流れに順応し、空気とともにハンドピースの内
部から排出パイプを経由して外部のポンプに確実に排出
されるので、引き続き照射されるレーザビームが飛散物
に遮蔽されず、照射条件の悪化を防止でき、骨皮質にエ
ネルギーの殆どが照射されることとなる。然して、演算
回路で演算される切開深度の測定誤差を大幅に低減する
ことができる。また、ハンドピースの窄んだ周壁先端に
排出パイプが貫設されてトランスデューサの下方に位置
しているので、飛散物のトランスデューサに対する影響
を確実に防止することが可能となる。Further, according to the present invention, the scattered matter adapts to the flow of the sucked air and is reliably discharged together with the air from the inside of the handpiece through the discharge pipe to the external pump, so that the irradiation is continued. The generated laser beam is not shielded by scattered matter, deterioration of irradiation conditions can be prevented, and most of the energy is irradiated to the bone cortex. However, the measurement error of the incision depth calculated by the arithmetic circuit can be significantly reduced. Further, since the discharge pipe is provided at the tip of the narrowed peripheral wall of the handpiece and is located below the transducer, it is possible to reliably prevent the scattered matter from affecting the transducer.
【００１７】[0017]
【実施例】以下、図１及び図２に示す一実施例に基づき
本発明を詳述すると、本発明に係る切開深度監視装置
は、ハンドピース３に、レーザビーム５の被照射部位８
への照射時に被照射部位８から発生する飛散物（蒸散
物）９を除去して切開溝７の切開深度ｄの測定誤差を低
減する飛散物除去手段１６を設けている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to one embodiment shown in FIGS. 1 and 2. In the incision depth monitoring device according to the present invention, the handpiece 3 is irradiated with a portion 8 to be irradiated with the laser beam 8.
A scattered substance removing means 16 is provided for removing scattered substances (evaporated substances) 9 generated from the irradiated portion 8 during irradiation to reduce the measurement error of the incision depth d of the incision groove 7.
【００１８】上記ハンドピース３は、略鉛筆形の円筒形
に構成され、その上方内部の取付け溝には、円形の集光
用レンズ４がＯリング１７を介して嵌着されており、下
方の周壁には、トランスデューサ１１が挿着されてい
る。The handpiece 3 is formed into a substantially pencil-shaped cylinder, and a circular condensing lens 4 is fitted in an attachment groove inside the upper part of the handpiece 3 via an O-ring 17, and the lower part of the lower handpiece 3 has a circular shape. The transducer 11 is attached to the peripheral wall.
【００１９】また、上記飛散物除去手段１６は、ハンド
ピース３の周壁上部から水平横方向に延設され被照射部
位８に噴射されるアシストガス（例えば、Ｎ2 ガス）を
ハンドピース３の内部に供給するアシストガス導入管１
６０と、ハンドピース３の窄んだ周壁先端に切り欠かれ
てトランスデューサ１１の下方に位置し、アシストガス
と飛散物９をハンドピース３の内部から外部に流出させ
る矩形の開口部１６１とを備え、集光用レンズ４とトラ
ンスデューサ１１の間に介在位置するアシストガス導入
管１６０が図示しないタンクに接続されている。その他
の部分については従来例と同様である。Further, the scattered matter removing means 16 is provided inside the handpiece 3 with an assist gas (for example, N 2 gas) which is horizontally extended from the upper part of the peripheral wall of the handpiece 3 and is injected to the irradiated portion 8. Gas introduction pipe 1 to supply to
60, and a rectangular opening 161 that is located below the transducer 11 and is cut out at the tip of the narrowed peripheral wall of the handpiece 3 to let the assist gas and the scattered matter 9 flow out from the inside of the handpiece 3 to the outside. An assist gas introduction pipe 160 located between the condenser lens 4 and the transducer 11 is connected to a tank (not shown). Other parts are the same as in the conventional example.
【００２０】従って、切開溝７の切開深度ｄの測定誤差
を低減するには、エキシマレーザ１からレーザ光を発振
するとともに、矢印で示すアシストガスをハンドピース
３の内部に供給すれば良い。すると、レーザ光は多関節
ミラー方式のマニピュレータや光ファイバ等から構成さ
れた導光路２に導かれてハンドピース３に伝送され、こ
のハンドピース３の上方に位置する集光用レンズ４で集
光されてレーザビーム５となり、このレーザビーム５が
ハンドピース３の先端から被切開物である骨皮質６に照
射される。また、アシストガスが図示しないタンクから
アシストガス導入管１６０を経由してハンドピース３の
内部下方に勢い流下される。Therefore, in order to reduce the measurement error of the incision depth d of the incision groove 7, it is sufficient to oscillate the laser beam from the excimer laser 1 and supply the assist gas shown by the arrow into the handpiece 3. Then, the laser light is guided to the light guide path 2 composed of a multi-joint mirror type manipulator, an optical fiber or the like and transmitted to the handpiece 3, and is condensed by the condenser lens 4 located above the handpiece 3. The laser beam 5 is formed into a laser beam 5, and the laser beam 5 is emitted from the tip of the handpiece 3 to the bone cortex 6 which is the incision. In addition, the assist gas is rushed down from the tank (not shown) to the lower inside of the handpiece 3 via the assist gas introduction pipe 160.
【００２１】この状態でハンドピース３の先端を図示し
ない術者が骨皮質６の表面に沿って移動させると、切開
溝７が形成されるとともに、この切開溝７の形成に伴い
被照射部位８から飛散物９が発生するが、この飛散物９
は図２に示す如く、流下してくるアシストガスの流れに
順応し、アシストガスとともにハンドピース３の内部か
ら開口部１６１を経由して外部に確実に排出される。When an operator (not shown) moves the tip of the handpiece 3 along the surface of the bone cortex 6 in this state, an incision groove 7 is formed and, along with the formation of the incision groove 7, an irradiation site 8 is formed. The scattered matter 9 is generated from
As shown in FIG. 2, is adapted to the flow of the assist gas that flows down, and is reliably discharged together with the assist gas from the inside of the handpiece 3 to the outside through the opening 161.
【００２２】上記構成によれば、噴射されるアシストガ
スの流れに飛散物９が順応し、アシストガスとともにハ
ンドピース３の内部から開口部１６１を経由して外部に
確実に排出されるので、引き続き照射されるレーザビー
ム５が飛散物９に遮蔽されず、照射条件の悪化を防止で
き、骨皮質６にエネルギーの殆どが照射されることとな
る。然して、演算回路１４で演算される切開溝７の切開
深度ｄの測定誤差を大幅に低減することができる。ま
た、ハンドピース３の窄んだ周壁先端に開口部１６１が
切り欠かれてトランスデューサ１１の下方に位置してい
るので、飛散物９のトランスデューサ１１に対する影響
を確実に防止することが可能となる。According to the above structure, the scattered matter 9 adapts to the flow of the injected assist gas, and is reliably discharged together with the assist gas from the inside of the handpiece 3 through the opening 161 to the outside. The irradiated laser beam 5 is not shielded by the scattered material 9, deterioration of irradiation conditions can be prevented, and most of the energy is irradiated to the bone cortex 6. However, the measurement error of the cutting depth d of the cutting groove 7 calculated by the calculation circuit 14 can be significantly reduced. Further, since the opening 161 is cut out at the distal end of the peripheral wall of the handpiece 3 and is located below the transducer 11, the influence of the scattered matter 9 on the transducer 11 can be reliably prevented.
【００２３】尚、上記実施例では、ハンドピース３の窄
んだ周壁先端に開口部１６１を切り欠いたものを示した
が、図３に示す如く、ハンドピース３の窄んだ先端の開
口縁に、飛散物９の流出スペースを形成する複数のスペ
ーサ１６２を突設しても上記実施例と同様の作用効果が
期待できる。In the above embodiment, the opening 161 is cut out at the tip of the peripheral wall of the handpiece 3 which is narrowed, but as shown in FIG. 3, the opening edge of the narrowed tip of the handpiece 3 is shown. In addition, even if a plurality of spacers 162 that form the outflow space for the scattered material 9 are provided in a protruding manner, the same operational effect as in the above-described embodiment can be expected.
【００２４】次に、図４は本発明の第２の実施例を示す
もので、この場合には、飛散物除去手段１６が、ハンド
ピース３の窄んだ周壁先端に貫設されてトランスデュー
サ１１の下方に位置し、ハンドピース３の内部における
被照射部位周辺の空気と飛散物９を外部に排出する排出
パイプ１６３と、ハンドピース３の周壁上部に穿設され
て集光用レンズ４の下方に位置し、ハンドピース３の内
部に新たな空気を供給する円形の空気取り入れ孔１６４
とから構成され、排出パイプ１６３の自由端が図示しな
いポンプに接続されている。その他の部分については上
記実施例と同様である。Next, FIG. 4 shows a second embodiment of the present invention. In this case, the scattering material removing means 16 is provided so as to penetrate the distal end of the peripheral wall of the handpiece 3 which is narrowed, and the transducer 11 is removed. Below the condenser lens 4, which is located below the condenser lens 4 and which is disposed in the upper part of the peripheral wall of the handpiece 3 and which discharges air and scattered matter 9 around the irradiated portion inside the handpiece 3 to the outside. And a circular air intake hole 164 for supplying fresh air to the inside of the handpiece 3
And a free end of the discharge pipe 163 is connected to a pump (not shown). Other parts are the same as those in the above embodiment.
【００２５】従って、切開溝７の切開深度ｄの測定誤差
を低減するには、エキシマレーザ１からレーザ光を発振
するとともに、ポンプを作動させてハンドピース３の内
部の空気を吸引すれば良い。すると、レーザ光は多関節
ミラー方式のマニピュレータや光ファイバ等から構成さ
れた導光路２に導かれてハンドピース３に伝送され、こ
のハンドピース３の上方に位置する集光用レンズ４で集
光されてレーザビーム５となり、このレーザビーム５が
ハンドピース３の先端から被切開物である骨皮質６に照
射される。また、ハンドピース３の内部の空気（図４の
矢印参照）がハンドピース３の内部から排出パイプ１６
３を経由してポンプに勢い吸引される。Therefore, in order to reduce the measurement error of the incision depth d of the incision groove 7, it is sufficient to oscillate the laser light from the excimer laser 1 and operate the pump to suck the air inside the handpiece 3. Then, the laser light is guided to the light guide path 2 composed of a multi-joint mirror type manipulator, an optical fiber or the like and transmitted to the handpiece 3, and is condensed by the condenser lens 4 located above the handpiece 3. The laser beam 5 is formed into a laser beam 5, and the laser beam 5 is emitted from the tip of the handpiece 3 to the bone cortex 6 which is the incision. In addition, the air inside the handpiece 3 (see the arrow in FIG. 4) is discharged from the inside of the handpiece 3 to the exhaust pipe 16.
It is sucked into the pump by way of 3.
【００２６】この状態でハンドピース３の先端を図示し
ない術者が骨皮質６の表面に沿って移動させると、切開
溝７が形成されるとともに、この切開溝７の形成に伴い
被照射部位８から飛散物９が発生するが、この飛散物９
は図４に示す如く、吸引される空気の流れに順応し、空
気とともにハンドピース３の内部から排出パイプ１６３
を経由して外部のポンプに円滑に排出される。そして、
新たな空気は外部から空気取り入れ孔１６４を経由して
ハンドピース３の内部に流入する（図４の矢印参照）。When an operator (not shown) moves the tip of the handpiece 3 along the surface of the bone cortex 6 in this state, an incision groove 7 is formed, and along with the formation of the incision groove 7, the irradiated portion 8 is irradiated. The scattered matter 9 is generated from
As shown in FIG. 4, the exhaust pipe 163 adapts to the flow of sucked air and is discharged from the inside of the handpiece 3 together with the air.
It is smoothly discharged to the external pump via. And
Fresh air flows from the outside into the handpiece 3 via the air intake hole 164 (see the arrow in FIG. 4).
【００２７】上記構成によれば、吸引される空気の流れ
に飛散物９が順応し、空気とともにハンドピース３の内
部から排出パイプ１６３を経由して外部のポンプに確実
に排出されるので、引き続き照射されるレーザビーム５
が飛散物９に遮蔽されず、照射条件の悪化を防止でき、
骨皮質６にエネルギーの殆どが照射されることとなる。
然して、演算回路１４で演算される切開深度ｄの測定誤
差を大幅に低減することができる。また、ハンドピース
３の窄んだ周壁先端に排出パイプ１６３が貫設されてト
ランスデューサ１１の下方に位置しているので、飛散物
９のトランスデューサ１１に対する影響を確実に防止す
ることが可能となる。According to the above construction, the scattered matter 9 adapts to the flow of the sucked air and is reliably discharged together with the air from the inside of the handpiece 3 through the discharge pipe 163 to the external pump. Laser beam 5 to be irradiated
Is not shielded by the scattered matter 9, and deterioration of irradiation conditions can be prevented,
Most of the energy is irradiated to the bone cortex 6.
However, the measurement error of the incision depth d calculated by the calculation circuit 14 can be significantly reduced. Further, since the discharge pipe 163 is provided at the tip of the narrowed peripheral wall of the handpiece 3 so as to be located below the transducer 11, it is possible to reliably prevent the influence of the scattered matter 9 on the transducer 11.
【００２８】尚、上記実施例では、ハンドピース３の周
壁上部に空気取り入れ孔１６４を穿設したものを示した
が、空気取り入れ孔１６４の代わりにアシストガス導入
管１６０等を接続しても良い。また、上記諸実施例で
は、アシストガス導入管１６０又は空気取り入れ孔１６
４を集光用レンズ４の下方、換言すれば、集光用レンズ
４の出力側に配設したものを示したが、集光用レンズ４
の外周縁にバイパスを設けて集光用レンズ４の上方、換
言すれば、集光用レンズ４の導光路２側に配設しても良
いのは言うまでもない。さらに、上記諸実施例では、レ
ーザ骨切開手術について述べたが、ハンドピース３をレ
ーザ加工用ノズル等に置き換えてレーザ加工等に適用し
た場合にも上記諸実施例と同様の作用効果が期待でき
る。In the above embodiment, the air intake hole 164 is formed in the upper part of the peripheral wall of the handpiece 3, but an assist gas introduction pipe 160 or the like may be connected instead of the air intake hole 164. . In addition, in the above-described embodiments, the assist gas introduction pipe 160 or the air intake hole 16 is provided.
4 is provided below the condensing lens 4, in other words, on the output side of the condensing lens 4, the condensing lens 4 is shown.
It goes without saying that a bypass may be provided on the outer peripheral edge of the condenser lens 4 above the condenser lens 4, that is, on the light guide path 2 side of the condenser lens 4. Further, in the above-mentioned embodiments, the laser osteotomy is described. However, when the handpiece 3 is replaced with a laser machining nozzle or the like and applied to laser machining or the like, the same operational effect as in the above-mentioned embodiments can be expected. .
【００２９】[0029]
【発明の効果】以上のように本発明によれば、噴射され
る圧力流体の流れに飛散物が順応し、圧力流体とともに
ハンドピースの内部から開口部を経由して外部に確実に
排出されるので、引き続き照射されるレーザビームが飛
散物に全く遮蔽されず、照射条件の悪化を確実に防止で
き、被照射部位にエネルギーの殆どが照射されることと
なる。然して、演算回路で演算される切開深度の測定誤
差を大幅に低減することができるという顕著な効果があ
る。また、ハンドピースの周壁先端に開口部が切り欠か
れてトランスデューサの下方に位置しているので、飛散
物のトランスデューサに対する影響を確実に防止するこ
とが可能になるという顕著な効果がある。また、本発明
によれば、吸引される空気の流れに飛散物が順応し、空
気とともにハンドピースの内部から排出手段を経由して
外部のポンプに円滑に排出されるので、引き続き照射さ
れるレーザビームが飛散物に全く遮蔽されず、照射条件
の悪化を確実に防止でき、被照射部位にエネルギーの殆
どが照射されることとなる。然して、演算回路で演算さ
れる切開深度の測定誤差を大幅に低減することができる
という顕著な効果がある。また、ハンドピースの周壁先
端に排出手段が貫設されてトランスデューサの下方に位
置しているので、飛散物のトランスデューサに対する影
響を確実に防止することが可能になるという顕著な効果
がある。As described above, according to the present invention, the scattered matter adapts to the flow of the pressure fluid to be jetted, and is reliably discharged together with the pressure fluid from the inside of the handpiece to the outside through the opening. Therefore, the laser beam to be continuously irradiated is not shielded by the scattered matter at all, the deterioration of the irradiation condition can be surely prevented, and most of the energy is irradiated to the irradiated portion. However, there is a remarkable effect that the measurement error of the incision depth calculated by the arithmetic circuit can be significantly reduced. Further, since the opening is cut out at the tip of the peripheral wall of the handpiece and is located below the transducer, there is a remarkable effect that it is possible to reliably prevent the scattered matter from affecting the transducer. Further, according to the present invention, the scattered matter adapts to the flow of the sucked air and is smoothly discharged together with the air from the inside of the handpiece to the external pump via the discharging means. The beam is not shielded by the scattered matter at all, the deterioration of the irradiation condition can be reliably prevented, and most of the energy is irradiated to the irradiated portion. However, there is a remarkable effect that the measurement error of the incision depth calculated by the arithmetic circuit can be significantly reduced. Further, since the discharge means is provided at the tip of the peripheral wall of the handpiece and is located below the transducer, there is a remarkable effect that it is possible to reliably prevent the scattered matter from affecting the transducer.
【図１】本発明に係る切開深度監視装置の一実施例を示
す要部斜視図である。FIG. 1 is a perspective view of a main part showing an embodiment of an incision depth monitoring device according to the present invention.
【図２】本発明に係る切開深度監視装置の一実施例を示
す要部断面斜視図である。FIG. 2 is a perspective cross-sectional view of a main part showing an embodiment of the incision depth monitoring device according to the present invention.
【図３】本発明に係る切開深度監視装置の他の実施例を
示す要部断面説明図である。FIG. 3 is an explanatory cross-sectional view of a main part showing another embodiment of the incision depth monitoring device according to the present invention.
【図４】本発明に係る切開深度監視装置の第２の実施例
を示す要部断面説明図である。FIG. 4 is a cross-sectional explanatory view of a main part showing a second embodiment of the incision depth monitoring device according to the present invention.
【図５】従来の切開深度監視装置を示す全体説明図であ
る。FIG. 5 is an overall explanatory view showing a conventional incision depth monitoring device.
３…ハンドピース（筒体）、５…レーザビーム、８…被
照射部位、９…飛散物、１１…トランスデューサ、１４
…演算回路（演算手段）、１６…飛散物除去手段、１６
０…アシストガス導入管（圧力流体供給手段）、１６１
…開口部、１６２…スペーサ、１６３…排出パイプ（排
出手段）、１６４…空気取り入れ孔。3 ... Handpiece (cylindrical body), 5 ... Laser beam, 8 ... Irradiation site, 9 ... Scattered material, 11 ... Transducer, 14
... arithmetic circuit (arithmetic means), 16 ... scattered matter removing means, 16
0 ... Assist gas introduction pipe (pressure fluid supply means), 161
... Opening part, 162 ... Spacer, 163 ... Exhaust pipe (exhaust means), 164 ... Air intake hole.
Claims (3)
射部位に照射する筒体と、この筒体に設けられ該レーザ
ビームの被照射部位への照射時に被照射部位で発生して
空中を伝播する音波を検出するトランスデューサと、こ
のトランスデューサから出力される検出信号に基づいて
該被照射部位の切開深度を演算する演算手段とを備え、
該筒体には、レーザビームの被照射部位への照射時に被
照射部位から発生する飛散物を除去して切開深度の測定
誤差を低減する飛散物除去手段を設けたことを特徴とす
る切開深度監視装置。1. A cylindrical body for irradiating a laser beam from a tip to an irradiated portion of an incision, and a cylindrical body provided on the cylindrical body, which is generated at the irradiated portion when the laser beam is irradiated to the irradiated portion to move in the air. A transducer that detects a propagating sound wave, and a computing unit that computes an incision depth of the irradiation site based on a detection signal output from the transducer,
The incision depth is characterized in that the cylindrical body is provided with a scattered object removing means for removing scattered objects generated from the irradiated site when the laser beam is irradiated to the irradiated site to reduce measurement error of the incision depth. Monitoring equipment.
被照射部位に噴射される圧力流体を当該筒体の内部に供
給する圧力流体供給手段と、筒体の先端に形成されてト
ランスデューサの下方に位置し、圧力流体と飛散物を当
該筒体の内部から外部に導く開口部とから構成されてい
ることを特徴とする請求項１に記載の切開深度監視装
置。2. The above-mentioned scattered matter removing means is a pressure fluid supply means that is provided on a cylindrical body and that supplies a pressure fluid that is injected to an irradiation site to the inside of the cylindrical body, and a transducer that is formed at the tip of the cylindrical body. The incision depth monitoring device according to claim 1, wherein the incision depth monitoring device is located below the opening and is configured by an opening portion that guides the pressure fluid and the scattered matter from the inside of the cylindrical body to the outside.
けられてトランスデューサの下方に位置し、当該筒体の
内部における被照射部位周辺の空気と飛散物を外部に排
出する排出手段と、筒体に穿設され当該筒体の内部に空
気を供給する空気取り入れ孔とから構成されていること
を特徴とする請求項１に記載の切開深度監視装置。3. The scatterer removing means is provided at the tip of the cylindrical body and is located below the transducer, and discharge means for discharging air and scattered matter around the irradiated portion inside the cylindrical body to the outside. The incision depth monitoring device according to claim 1, further comprising: an air intake hole that is formed in the cylindrical body and supplies air to the inside of the cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4175503A JPH07115218B2 (en) | 1992-07-02 | 1992-07-02 | Incision depth monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4175503A JPH07115218B2 (en) | 1992-07-02 | 1992-07-02 | Incision depth monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0615468A true JPH0615468A (en) | 1994-01-25 |
| JPH07115218B2 JPH07115218B2 (en) | 1995-12-13 |
Family
ID=15997188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4175503A Expired - Fee Related JPH07115218B2 (en) | 1992-07-02 | 1992-07-02 | Incision depth monitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07115218B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996013390A1 (en) * | 1994-10-28 | 1996-05-09 | Sapporo Breweries Ltd. | Laser printer |
| US20110013177A1 (en) * | 2009-07-16 | 2011-01-20 | Bridgestone Americas Tire Operatiions, Llc | Laser diode testing method |
| JP2020089578A (en) * | 2018-12-06 | 2020-06-11 | 株式会社吉田製作所 | Medical device with airtight cover for local surgery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59220294A (en) * | 1983-05-31 | 1984-12-11 | Inoue Japax Res Inc | Laser working method |
| JPH02192888A (en) * | 1988-10-20 | 1990-07-30 | Hamamatsu Photonics Kk | Incision depth monitoring device and incising device |
-
1992
- 1992-07-02 JP JP4175503A patent/JPH07115218B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59220294A (en) * | 1983-05-31 | 1984-12-11 | Inoue Japax Res Inc | Laser working method |
| JPH02192888A (en) * | 1988-10-20 | 1990-07-30 | Hamamatsu Photonics Kk | Incision depth monitoring device and incising device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996013390A1 (en) * | 1994-10-28 | 1996-05-09 | Sapporo Breweries Ltd. | Laser printer |
| US20110013177A1 (en) * | 2009-07-16 | 2011-01-20 | Bridgestone Americas Tire Operatiions, Llc | Laser diode testing method |
| US8330074B2 (en) * | 2009-07-16 | 2012-12-11 | Bridgestone America Tire Operations, LLC | Method and apparatus for verifying a laser etch |
| JP2020089578A (en) * | 2018-12-06 | 2020-06-11 | 株式会社吉田製作所 | Medical device with airtight cover for local surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07115218B2 (en) | 1995-12-13 |
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