【発明の詳細な説明】［産業上の利用分野］本発明は生体組織を凍結して破砕する装置に関する。[Detailed description of the invention][Industrial application field]The present invention relates to an apparatus for freezing and crushing living tissue.
［従来の技術］従来、前立腺の切除などに超音波振動を利用する方式が
知られている。この方式では超音波プローブを切除しよ
うとする組織に押し当ててその組織を切除するものであ
る＠［発明が解トしようとする問題点コしかしながら、切除しようとする組織に超音波プローブ
を押し当てたとき、その組織が柔らかく弾性がある場合
には逃げてしまい、効率よく切除することができない。[Prior Art] Conventionally, methods using ultrasonic vibrations are known for excision of the prostate. In this method, an ultrasound probe is pressed against the tissue to be removed and the tissue is ablated. If the tissue is soft and elastic, it will escape and cannot be removed efficiently.
また、超音波振動によシ組織を切除する方式では血管を
損傷しやすく、出血を起すという不都合がある。Furthermore, the method of cutting tissue using ultrasonic vibrations has the disadvantage of easily damaging blood vessels and causing bleeding.
本発明は上記問題点に着目してなされたもので、その目
的とするところは切除しようとする生体組織が柔らかく
弾性があっても出血が少なく効率よく切除できる生体組
織の凍結破砕装置を提供することにある。The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a cryo-fracture device for living tissue that can efficiently cut the living tissue with less bleeding even if the living tissue to be cut is soft and elastic. There is a particular thing.
入用シースに、その切除しようとする生体組織を凍結す
る凍結用プローブとその凍結した部位の組織に超音波振
動を与えて破砕する超音波プローブとを組み込んでなる
生体組織の凍結破砕装置である。This is a living tissue cryo-fracture device which incorporates into a working sheath a freezing probe that freezes the living tissue to be resected, and an ultrasonic probe that applies ultrasonic vibration to the tissue at the frozen site to shatter it. .
そして、切除しようとする生体組織を凍結した上でその
生体組織に超音波と加えて破砕する。Then, the living tissue to be excised is frozen, and then ultrasonic waves are applied to the living tissue to crush it.
［実施例コ第１図ないし第３図は本発明の第１の実施例を示すもの
である。Embodiment FIGS. 1 to 3 show a first embodiment of the present invention.
第１図中１は超音波プローブであシ、これは把持部２と
挿入用伝達管３とからなる。把持部２には超音波振動子
４が組み込まれている。この超音波振動子４で発生した
超音波は伝達管３に伝えられるようになっている。また
、伝達管３は把持部２に取着した口金５に連通接続され
ている。口金５にはコツクロが設けられるとともに、吸
引チューブ７が接続されている。Reference numeral 1 in FIG. 1 is an ultrasonic probe, which consists of a gripping portion 2 and a transmission tube 3 for insertion. An ultrasonic transducer 4 is incorporated into the grip portion 2 . The ultrasonic waves generated by the ultrasonic transducer 4 are transmitted to the transmission pipe 3. Further, the transmission pipe 3 is connected to a base 5 attached to the grip portion 2 . The cap 5 is provided with a cap and a suction tube 7 is connected thereto.
超音波プローブＩにはその把持部２を貫通してシースた
る伝達管３に挿通される第３図で示すような凍結用プロ
ーｆ８が着脱自在に組み込まれるようになっている。こ
の凍結用プローブ８は上記伝達管３に緩く挿入されるパ
イプ９を手元部材１０に連結してなυ、また、手元部１
０には凍結用液体またはガスを供給するチューブ１１が
接続されている。手元部１０にはパイプ９に通じるその
供給通路を開閉するコック１２が設けられている。なお
、チューブ１１の延出先端にはコネクタ１３が取り付け
られている。このコネクタＺ３は凍結源としての液体窒
素を収容する容器１４を有する装置本体１５の接続部に
対し着脱自在に接続されるようになっている。A freezing probe f8 as shown in FIG. 3 is detachably incorporated into the ultrasonic probe I, and is inserted through the grip portion 2 of the ultrasonic probe I and into the transmission tube 3 serving as a sheath. This freezing probe 8 has a pipe 9 that is loosely inserted into the transmission pipe 3 connected to a hand member 10, and also has a hand member 10.
0 is connected to a tube 11 that supplies freezing liquid or gas. The hand portion 10 is provided with a cock 12 for opening and closing the supply passage leading to the pipe 9. Note that a connector 13 is attached to the extending end of the tube 11. This connector Z3 is designed to be detachably connected to a connecting portion of a device main body 15 having a container 14 containing liquid nitrogen as a freezing source.
次に、このように構成された凍結破砕装置の使用方法を
説明する。Next, a method of using the freeze crushing apparatus configured as described above will be explained.
まず、超音波プローブ１の伝達管３を内視鏡のシースを
通じて挿入する。そして、内視鏡による観察で切除しよ
うとする部位に伝達管３の先端を近づける。そして、こ
の超音波プローブＩに凍結用プローブ８を差し込んでこ
の・ぐイブ９の先端を切除しようとする部位に近づけ、
液体窒素を吹き付ける。これにより切除しようとする部
位が凍結される。First, the transmission tube 3 of the ultrasound probe 1 is inserted through the sheath of the endoscope. Then, the distal end of the transmission tube 3 is brought close to the site to be resected by observation using an endoscope. Then, insert the cryoprobe 8 into the ultrasonic probe I and bring the tip of the guibe 9 close to the area to be removed.
Spray with liquid nitrogen. This freezes the area to be removed.
そこで、凍結された部位に伝達管３の先端を当て超音波
プローブＩｆ作動させると、その伝達管３と通じて超音
波振動が伝わり、その凍結された組織を破砕する。破砕
された組織の破片は超音波グローｆ１の伝達管３および
吸引チー−２７を通じて吸引されることにより外部に排
出される。Therefore, when the tip of the transmission tube 3 is applied to the frozen region and the ultrasonic probe If is activated, ultrasonic vibrations are transmitted through the transmission tube 3 and the frozen tissue is crushed. The fragments of the crushed tissue are sucked through the transmission tube 3 of the ultrasonic glow f1 and the suction tee 27 and are discharged to the outside.
この排出動作および上記液体窒素の供給動作はそれぞれ
コツクロ、１２によシ操作される。This discharge operation and the above-mentioned liquid nitrogen supply operation are each operated by the controller 12.
しかして、切除しようとする部位の組織を凍結するため
、超音波振動による組織の破砕が容易で効率よく切除で
きる。また、血液まで凍結するため出血が少ない。Since the tissue at the site to be resected is frozen, the tissue can be easily crushed by ultrasonic vibration and can be resected efficiently. Also, since the blood is frozen, there is less bleeding.
なお、との実施例において超音波グローツノのシースは
内視鏡用シースであり、凍結用プロー２８にとっては伝
達管３がシースとなる。In this embodiment, the sheath of the ultrasonic glow horn is an endoscope sheath, and the transmission tube 3 serves as the sheath for the freezing plow 28.
第４図および第５図は本発明の第２の実施例を示すもの
である。4 and 5 show a second embodiment of the present invention.
この実施例は前立腺を切除するためのゼレクトスコープ
のシース２１に対して超音波プローブ１と凍結用プロー
グ８を挿入して装着するものである。また、上記内視鏡
用シース２１には光学視管２２が同じく挿入して装着さ
れている。In this embodiment, an ultrasonic probe 1 and a freezing prong 8 are inserted and attached to a sheath 21 of a zelectoscope for resecting the prostate. Further, an optical viewing tube 22 is similarly inserted and attached to the endoscope sheath 21.
そして、光学視管２２で切除部位を観察しながら凍結お
よび切除を行なうことができる。光学視管２２はシース
２１０基端部２３に対して着脱自在であり、２４はその
接眼部である。Then, freezing and resection can be performed while observing the resection site with the optical viewing tube 22. The optical viewing tube 22 is detachable from the proximal end 23 of the sheath 210, and 24 is its eyepiece.
なお、上記実施例では超音波プローブ１と凍結用プロー
ブ８とを別々に構成してなるが、超音波プローブ１の内
腔に直接凍結用ガスや液体を通し、プローブ１．８を兼
用するようにしてもよい。In the above embodiment, the ultrasonic probe 1 and the freezing probe 8 are configured separately, but it is possible to pass the freezing gas or liquid directly into the inner cavity of the ultrasonic probe 1 so that the probe 1.8 can also be used. You may also do so.
［発明の効果コ以上説明したように本発明の装置によれば切除しようと
する部位の生体組織を凍結用プローブで凍結し、この凍
結した生体組織に超音波プローブによシ超音波振動を加
えて破砕するため、もともとその生体組織が柔らかく弾
性があっても出血が少なく効率よく切除できる。[Effects of the Invention] As explained above, according to the apparatus of the present invention, the biological tissue at the site to be resected is frozen with the freezing probe, and the ultrasonic probe applies ultrasonic vibration to the frozen biological tissue. Since the tissue is crushed by hand, even if the living tissue is soft and elastic, it can be removed efficiently with little bleeding.
第１図は本発明の第１の実施例の側面図、第２図は同じ
くその先端部分の斜視図、第３図は同じくその凍結用プ
ローブと液体窒素の収容装置部との斜視図、第４図は本
発明の第２の実施例の側面図、第５図は同じくその先端
部の斜視図である。１・・・超音波プローブ、８・・・凍結用プローブ、２
１・・・シース。出願人代理人 弁理士 坪 井 浮彫 ２ｗＪ１フ第３図FIG. 1 is a side view of the first embodiment of the present invention, FIG. 2 is a perspective view of its tip, FIG. 3 is a perspective view of the freezing probe and liquid nitrogen storage device, and FIG. FIG. 4 is a side view of the second embodiment of the present invention, and FIG. 5 is a perspective view of the tip thereof. 1...Ultrasonic probe, 8...Freezing probe, 2
1... Sheath. Applicant's agent Patent attorney Tsuboi Relief 2wJ 1F Figure 3
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