JP2004049706A - Medical aspirator - Google Patents

Medical aspirator Download PDF

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Publication number
JP2004049706A
JP2004049706A JP2002213718A JP2002213718A JP2004049706A JP 2004049706 A JP2004049706 A JP 2004049706A JP 2002213718 A JP2002213718 A JP 2002213718A JP 2002213718 A JP2002213718 A JP 2002213718A JP 2004049706 A JP2004049706 A JP 2004049706A
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Prior art keywords
suction
clogging
medical
suction device
warning
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JP2002213718A
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Japanese (ja)
Inventor
Susumu Kobayashi
小林 進
Tomoyuki Tejima
手島 友之
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Nipro Corp
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Nipro Corp
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Priority to JP2002213718A priority Critical patent/JP2004049706A/en
Publication of JP2004049706A publication Critical patent/JP2004049706A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical aspirator that eliminates the need for watch for a blocking of an aspiration catheter or an aspiration tube and significantly reduces a burden on a worker. <P>SOLUTION: This medical aspirator 10 has a blocking detection means 20 detecting the blocking of an aspiration catheter or an aspiration tube 36. The aspirator is intended especially for percutaneous thrombectomy and has a motor-driven pump 14 for decompressive aspiration and a battery for a power source. The aspirator measures a change in the flow rate of an object of extraction, a change in the weight of an aspirate sampling bottle 34 and a change in the quantity of drops of aspirates to the aspirate sampling bottle 34 and detects a blocking and has a blocking warning means warning e.g. with a warning sound or a warning light. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、血栓や痰や鼻汁、血液などの体液、等々を吸引するための医療用吸引器に関し、より詳しくは、吸引動作中に生じる、吸引カテーテル又は吸引チューブの詰まりを自動的に検知する手段を備えた医療用吸引器に関する。
【0002】
【発明が解決しようとする課題】
従来、医療用吸引器は、在宅患者や入院患者の口腔内処置や、外科手術時の血液などの体液の吸引、等々の幅広い分野で使用されている。また近年、冠状動脈内にカテーテルを挿入して血栓を吸引する、経皮的血栓除去手術にも多く用いられてきた。
【0003】
ところが、体液などの吸引時に、特に心筋梗塞の原因である冠状動脈血栓の除去を目的とした吸引カテーテル用吸引器においては、血栓吸引中、血栓による吸引カテーテルの詰まりが頻繁に発生していた。そして、この吸引カテーテルの詰まりの確認は、作業者が、吸引カテーテル内又は吸引チューブ内、もしくは吸引物採取ボトル内の吸引物(血液)の動きを監視して行っているのが現状である。しかしながら、緊急性を要する急性心筋梗塞などの、血管内のカテーテル操作を行っている作業者にとって、この監視動作は大きな負担になっており、血栓による詰まりは、吸引効率の低下のみならず患者への安全性の低下にもつながり、最悪の場合は、患者の生死に係わる問題となっている。
【0004】
この問題は、減圧吸引用の電動ポンプを内部に備えた医療用吸引器や、電池などの内部電源を備えた医療用吸引器で顕著であった。すなわち、両者とも携帯性が重視されているわけであるから、必然的に、消費電力の少ない小型のポンプや比較的容量の小さな電池が選択されている。このため、吸引力にあまり余裕がなくて血栓などの詰まりが特別に生じ易いからである。
【0005】
そこで本発明者は、吸引カテーテルや吸引チューブ内の詰まりに関し、作業者の目視確認を省いてその負担を軽減することにより、患者の安全性と吸引効率の向上とが計られた医療用吸引器を提供するべく鋭意検討を重ねた結果、本発明に至ったのである。
【0006】
【課題を解決するための手段】
本発明に係わる医療用吸引器の要旨とするところは、血栓や痰、血液などの体液、等々を吸引するための医療用吸引器であって、吸引動作中の、吸引チューブ又は吸引カテーテルの詰まりを検知する、詰まり検知手段を備えたことにある。
【0007】
さらに、かかる医療用吸引器が経皮的血栓除去手術用とされたことにある。
【0008】
さらに、かかる医療用吸引器において、減圧吸引のための電動ポンプが備えられたことにある。
【0009】
さらに、かかる医療用吸引器において、吸引物の流量変化を測定する詰まり検知手段が備えられたことにある。
【0010】
あるいはさらに、かかる医療用吸引器において、吸引物採取ボトルの重量変化を測定する詰まり検知手段が備えられたことにある。
【0011】
あるいはさらに、かかる医療用吸引器において、吸引物採取ボトル内の吸引物滴下量変化を測定する詰まり検知手段が備えられたことにある。
【0012】
さらにまた、かかる医療用吸引器において、吸引チューブ又は吸引カテーテルの詰まりが生じたことを作業者に知らせるための詰まり警告手段が備えられたことにある。
【0013】
そして特に、この詰まり警告手段が警告音とされたことにある。
【0014】
あるいは特に、この詰まり警告手段が警告灯とされたことにある。
【0015】
さらにまた、かかる医療用吸引器において、吸引物採取ボトルの固定手段と、吸引物採取ボトル内を照らすためのボトル照明手段とが備えられたことにある。
【0016】
さらに、かかる医療用吸引器において、電源用の電池が備えられたことにある。
【0017】
【発明の実施の形態】
次に、本発明に係わる医療用吸引器の実施態様について、図面に基づいて詳しく説明する。
【0018】
図1と図2は、本発明に係わる医療用吸引器の特に好ましい一例を示し、図1は要部を模式的に示す縦断面図であり、図2はその外観斜視図である。医療用吸引器10は、吸引口12と、減圧吸引を行うための電動ポンプ14と、吸引口12と電動ポンプ14とをつなぐ通気路16と、排気口18とを備えている。
【0019】
そして、その前面下部が台状に張り出していて、吸引物採取ボトル34の置き場を形成すると共に、吸引物採取ボトル34の下部周囲を囲んで固定するための、環状のボトル固定手段24が設けられている。また、吸引物採取ボトル34の固定位置(ボトル固定手段24)に対峙して、ボトル照明手段26が本体ケース13の前面上部に設けられている。
【0020】
また、吸引物採取ボトル34の固定位置(ボトル固定手段24)の底部にはロードセル(詰まり検知手段)20が配設されており、本体ケース13の頂部には、ブザー(詰まり警告手段)25が配設されている。
【0021】
そしてまた、この医療用吸引器10には吸引圧力の調整手段(図中省略)が設けられているので、吸引圧力を調整するための圧力調整ツマミ28と圧力表示計30も、本体ケース13の前面上部に設けられ、本体ケース13の側面には電源スイッチ22が設けられている。
【0022】
医療用吸引器10は次ぎのようにして用いられる。吸引物採取ボトル34、吸引チューブ38、吸引カテーテル、連結チューブ36がセットとなった吸引カテーテルセットのうち、まず吸引物採取ボトル34を前面下部に設けた環状のボトル固定手段24に嵌めこんで置き、連結チューブ36を介して吸引口12に連結する。連結チューブ36と吸引口12との間には、吸引物が電動ポンプ14内に侵入するのを防ぐと同時に、菌が吸引カテーテル内へ侵入するのを防ぐためのフィルター32が設けられている。次ぎに、吸引カテーテルの準備を行い、電源スイッチ22を押して電動ポンプ14を起動する。
【0023】
電動ポンプ14が起動すれば、通気路16、吸引口12、連結チューブ36、吸引物採取ボトル34、吸引チューブ38などからなる吸引経路を経て、吸引チューブ38の先端、あるいは、吸引チューブ38につながれた吸引カテーテルの先端までが負圧になり、血栓や痰や鼻汁、血液などの体液、等々が吸引されるようになる。そして、吸引された吸引物は、吸引物採取ボトル34に落下して採取される。
【0024】
この医療用吸引器10には、吸引物採取ボトル34の重量を測定するためのロードセル(詰まり検知手段)20が設けられている。吸引カテーテルや吸引チューブの詰まりが生じると、血液などの吸引物の吸引効率が減少するため、吸引物採取ボトル34の重量増加率が減少する。したがって、吸引物採取ボトル34の重量変化をロードセル20で測定することによって、吸引カテーテルや吸引チューブの詰まりを検知できるのである。そして、詰まりが検知されれば、直ちにブザー(詰まり警告手段)25によって警告音を発し、作業者に詰まりが生じたことを知らせることができる。
【0025】
本発明の医療用吸引器は、経皮的血栓除去手術において特に有効である。経皮的血栓除去手術では、大腿動脈又は橈骨動脈から胸部まで通された吸引カテーテルを介して血栓を吸引除去するのであるが、吸引カテーテルが細くて長いことや、流動しにくい血栓が多いことなどのために、吸引カテーテルに詰まりが生じ易い。また、心筋梗塞などの生死に関わる心臓近くの手術なので、作業者は全神経を手術に集中しなければならず、吸引カテーテルや吸引チューブの詰まりを目視で監視することが、特別大きな負担になるからである。
【0026】
また本発明は、内部に減圧吸引のための電動ポンプ14を備えた医療用吸引器10に対して特に有効である。すなわち、このような医療用吸引器10では、吸引源を外部に頼る医療用吸引器に較べ、携帯性や移動性が重視されるので、必然的に小型の電動ポンプ14が用いられることになり、吸引力にあまり余裕がなくて血栓などの詰まりが特別に生じ易いからである。
【0027】
電動ポンプ14は特に限定されず、ダイヤフラムポンプ、ピストンポンプ、ベーン式ポンプなどが挙げられるが、特に好ましくはダイヤフラムポンプが用いられる。ダイヤフラムポンプは、ポンプ室の一面をゴムやプラスチック製などの弾性膜で構成し、この弾性膜を、その裏側から、気体の圧、液体の量を加減したり、あるいは、機械的、電気的に動かす型式のものである。これにより、ポンプ室の容積を増減させ、その流入口と流出口に作られた弁機構によって、流入口から吸いこみ、流出口から排出するものである。ダイヤフラムポンプには、ポンプ室が一室の単動式と、往復する梃子の両側に二つのポンプ室を備えた複動式とがある。単動式ポンプでは吸い込みが間欠的であるが小型化しやすい特徴がある。一方、複動式ポンプでは吸いこみが平均化される特徴があり、用途に応じて、それぞれの特徴を活かした選択が行われる。
【0028】
医療用吸引器10の電源は、外部からコンセントなどを介して取り入れる外部電源でもよいし、内蔵する電池などの内部電源でもよい。一般に、手術室やカテーテル室の床面には、非常に多くのコードがすでに散在しているので、そこに、医療用吸引器10の電源用のコードをさらに増やすのは避けたいことである。内部電源とすれば、電源用のコードが不要となるので、この問題が解決する。また、内部電源とすれば、屋外でも、何処でも使用できるので大変便利になる。
【0029】
また本発明は、内部に電源用の電池を備えた医療用吸引器10に対して特に有効である。このような医療用吸引器10では、電源を商用電源などの外部に頼る医療用吸引器に較べ、携帯性や移動性が重視されるので、必然的に小型軽量で比較的容量の小さな電池が選択されることになる。このため、吸引力にあまり余裕がない電動ポンプ14が用いられ、血栓などの詰まりが特別に生じ易いからである。
【0030】
内部電源として用いる電池は、マンガン乾電池のような一次電池、あるいは、ニッケルカドミウム電池やリチウムイオン電池のような二次電池、又はバッテリーなどの如何なる電源でもよい。医療用吸引器10にはいろいろな電気機器や電気部品が収められているが、その中で、電動ポンプ14が最も負荷の大きな機器であるから、その使用電圧を基にして電源電圧を設定するのが好ましい。
【0031】
医療用吸引器10は、吸引物採取ボトル34を固定するためのボトル固定手段24と、吸引物採取ボトル34内を照らすためのボトル照明手段26とを備えている。本医療用吸引器10は、詰まり検知手段20によって自動的に吸引状況を監視しているのであるが、初期の吸引条件設定時や吸引物観察時などを含め、時には吸引物採取ボトル34を見て吸引状況を目視確認する必要がある。そのため、手術室やカテーテル室の一隅などの薄暗い所でも良く見えるように、ボトル固定手段24と対峙する位置に、ボトル照明手段26も併せて備えるのが好ましい。
【0032】
ボトル照明手段26は、吸引物採取ボトル34などと接触して破損しないように、装置から突出しないようにして設けられる。保護のためのカバーが設けられることが好ましい。また、照明用のランプには、輝度の高いハロゲンランプやLEDなどが好ましく用いられる。
【0033】
ボトル固定手段24は、吸引物採取ボトル34を定位置に安定に保つものであればよく、特に限定されないが、吸引物の滴下状態の観察を妨げてはならない。例えば、図2で示されるように、吸引物採取ボトル34の下部が嵌り込むようにされた環状のもの、あるいは、吸引物採取ボトル34の下部側面を囲むように立てられた数本の棒状物、あるいは、クランプなどを用いて構成される。
【0034】
この医療用吸引器10には、また、吸引圧力調整手段が備えられている。圧力表示計30を見ながら、圧力調整ツマミ28を操作し、処置に適した吸引圧力に調節することができるので大変便利である。
【0035】
図1及び図2に例示される医療用吸引器10において、詰まり検知手段はロードセル20であり、吸引物採取ボトル34の重量変化を測定するものである。重量測定手段としてロードセルは一般的に使用される手段であり、本発明に関しても好ましい実施態様である。
【0036】
しかしながら、本発明における詰まり検知手段は特に限定されず、特に好ましい別の実施態様では、吸引カテーテル又は吸引チューブ内の、血液などの吸引物の流量変化を測定することで行われる。例えば、電磁流量計や超音波流量計などによって、吸引物採取ボトル34直前の吸引チューブ38部分の流量を、吸引動作中に連続測定し、流量が設定値以下となった時に詰まりが発生したと判断することができる。
【0037】
また、詰まり検知手段の特に好ましい別の実施態様では、吸引物採取ボトル34内への吸引物滴下数を数えることで行われる。例えば、レーザーセンサーなどによって滴下の有無を検知し、滴下頻度が設定値以下になった時に、詰まりが発生したと判断することができる。
【0038】
また、通気路16内の圧力変化による検知も可能である。吸引カテーテル又は吸引チューブが閉塞すると吸引圧が上昇するので、設定値以上の吸引圧になった時に詰まりが発生したと判断することができる。圧力表示計30への出力に閾値を設けて警告を発するようにしてもよい。いずれにしても、詰まりを判断するための設定値や閾値は可変でなければならない。
【0039】
吸引カテーテル又は吸引チューブの詰まりが生じた時には、直ちに作業者に知らせて、吸引再開のための速やかな処置が取られることが好ましい。図1及び図2に例示される医療用吸引器10では、ブザーによって警告音を発する詰まり警告手段が採用されている。警告音を発する詰まり警告手段としては、他にベル、各種電子音、擬似音声等々が挙げられ、特に限定されない。警告音による警告手段であれば、作業者は手技中に詰まり監視のために医療用吸引器10を見る必要がないため、手技に十分集中でき、手術や患者に対する安全性が著しく高められる。
【0040】
詰まり警告手段の好ましい別の実施態様は警告灯である。作業者は、警告灯を見てその点灯や点滅を確認しなければならないが、目視のために、手術室やカテーテル室内の多数の警告音と混同することなく、確実に詰まりが警告される。警告灯としては各種ランプやLEDなどを用いることができる。
【0041】
以上、本発明に係わる医療用吸引器について詳細に説明してきたが、本発明は上述の引用・例示に限定されず、医療用吸引器の形状や構成、電動ポンプや内部電源の種類、詰まり検知手段や詰まり警告手段、ボトル固定手段やボトル照明手段の種類や構成などにつき、本発明の趣旨を逸脱しない範囲で、当業者の知識に基づき種々なる改良、修正、変化を加えた態様で実施し得るものである。
【0042】
【発明の効果】
本発明に係わる医療用吸引器によれば、吸引カテーテルや吸引チューブの詰まりが自動的に検知されるので、作業者による吸引状況の目視確認が不要となり、作業者の負担が大幅に軽減される。そして、作業者が余裕を持って他の必要業務に当たることができるようになるので、手術や患者に対する安全性が著しく向上する。
【0043】
そしてこの効果は、吸引カテーテルの詰まりが頻発しやすく、緊急性が高い経皮的血栓除去手術用の医療用吸引器において、特に顕著になる。
【0044】
また特に、吸引力にあまり余裕のない、減圧吸引用の電動ポンプや内部電源を備えた医療用吸引器において、この効果が格別に発揮される。
【0045】
そして、吸引物の流量変化、吸引物採取ボトルの重量変化、吸引物採取ボトルへの吸引物滴下量変化などを測定する詰まり検知手段を設けることによって、吸引カテーテルや吸引チューブの詰まりをより確実に検知できるようになる。
【0046】
また特に、警告音や警告灯などの詰まり警告手段を設けることにより、吸引カテーテル又は吸引チューブの詰まりが生じたことを直ちに作業者に知らせ、患者への対応処置や吸引再開のための処置などを、速やかに行えるようになる。
【図面の簡単な説明】
【図1】本発明に係わる医療用吸引器の一例を示し、要部を模式的に説明する縦断面図である。
【図2】本発明に係わり、図1に示される医療用吸引器の外観斜視図である。
【符号の説明】
10:医療用吸引器
12:吸引口
13:本体ケース
14:電動ポンプ
16:通気路
18:排気口
20:ロードセル(詰まり検知手段)
22:電源スイッチ
24:ボトル固定手段
25:ブザー(詰まり警告手段)
26:ボトル照明手段
28:圧力調整ツマミ
30:圧力表示計
32:フィルター
34:吸引物採取ボトル
36:連結チューブ
38:吸引チューブ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a medical aspirator for aspirating thrombus, sputum, nasal discharge, bodily fluids such as blood, and the like, and more particularly, automatically detects clogging of a suction catheter or a suction tube occurring during a suction operation. Medical suction device with means.
[0002]
[Problems to be solved by the invention]
2. Description of the Related Art Conventionally, medical suction devices have been used in a wide range of fields such as intraoral treatment of home and hospitalized patients, and suction of body fluids such as blood during surgical operations. In recent years, it has been widely used in percutaneous thrombectomy, in which a thrombus is aspirated by inserting a catheter into a coronary artery.
[0003]
However, when aspirating body fluids and the like, particularly in a suction device for a suction catheter for removing coronary artery thrombus which causes myocardial infarction, clogging of the suction catheter due to thrombus frequently occurred during thrombus suction. At present, the clogging of the suction catheter is checked by an operator by monitoring the movement of the suction material (blood) in the suction catheter, the suction tube, or the suction sample collection bottle. However, this monitoring operation is a heavy burden for workers who operate catheters in blood vessels such as acute myocardial infarction that requires urgency. In the worst case, it is a matter of life and death of the patient.
[0004]
This problem has been remarkable in a medical suction device having an electric pump for reducing pressure suction therein and a medical suction device having an internal power source such as a battery. That is, since portability is emphasized for both, a small pump with low power consumption and a battery with relatively small capacity are necessarily selected. For this reason, there is not much room for the suction force, and clogging such as a thrombus is particularly likely to occur.
[0005]
Therefore, the present inventor has proposed a medical aspirator in which clogging in a suction catheter or a suction tube is reduced by eliminating visual confirmation of an operator and thereby improving patient safety and suction efficiency. As a result of diligent studies to provide the present invention, the present invention has been achieved.
[0006]
[Means for Solving the Problems]
The gist of the medical aspirator according to the present invention is a medical aspirator for aspirating body fluids such as thrombus, sputum, blood, and the like, and clogging of a suction tube or a suction catheter during a suction operation. And a clogging detecting means for detecting the clogging.
[0007]
Further, such a medical suction device has been used for percutaneous thrombectomy.
[0008]
Further, such a medical suction device is provided with an electric pump for reduced pressure suction.
[0009]
Furthermore, such a medical suction device is provided with clogging detection means for measuring a change in the flow rate of a suctioned object.
[0010]
Alternatively, the medical aspirator may further include a clogging detection unit that measures a change in weight of the aspirated matter collection bottle.
[0011]
Alternatively, the medical aspirator further includes a clogging detection unit that measures a change in the amount of aspirated material dripped in the aspirated material collection bottle.
[0012]
Furthermore, such a medical suction device is provided with a clogging warning means for notifying an operator that a suction tube or a suction catheter has been clogged.
[0013]
In particular, the clogging warning means is set to a warning sound.
[0014]
Or, in particular, the clogging warning means is a warning light.
[0015]
Still further, in such a medical suction device, there is provided a means for fixing the aspirated matter collection bottle and a bottle illuminating means for illuminating the inside of the aspirated matter collection bottle.
[0016]
Further, such a medical suction device is provided with a battery for power supply.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the medical suction device according to the present invention will be described in detail with reference to the drawings.
[0018]
1 and 2 show a particularly preferred example of the medical suction device according to the present invention. FIG. 1 is a longitudinal sectional view schematically showing a main part, and FIG. 2 is an external perspective view thereof. The medical suction device 10 includes a suction port 12, an electric pump 14 for performing reduced-pressure suction, a ventilation path 16 connecting the suction port 12 and the electric pump 14, and an exhaust port 18.
[0019]
The lower portion of the front surface projects in a trapezoidal shape, and a ring-shaped bottle fixing means 24 is provided for forming a place for storing the suctioned material collection bottle 34 and surrounding and fixing the lower periphery of the suctioned material collection bottle 34. ing. Further, a bottle illuminating means 26 is provided on the upper front surface of the main body case 13 so as to face the fixing position of the aspirated matter collection bottle 34 (bottle fixing means 24).
[0020]
A load cell (clogging detection means) 20 is provided at the bottom of the fixed position (bottle fixing means 24) of the aspirated matter collection bottle 34, and a buzzer (clogging warning means) 25 is provided at the top of the main body case 13. It is arranged.
[0021]
Since the medical suction device 10 is provided with suction pressure adjusting means (omitted in the figure), the pressure adjustment knob 28 and the pressure indicator 30 for adjusting the suction pressure are also provided on the main body case 13. A power switch 22 is provided on the upper part of the front surface, and a power switch 22 is provided on a side surface of the main body case 13.
[0022]
The medical suction device 10 is used as follows. Among the suction catheter set including the suction sample collection bottle 34, the suction tube 38, the suction catheter, and the connection tube 36, first, the suction sample collection bottle 34 is fitted into the annular bottle fixing means 24 provided at the lower part on the front and placed. , And is connected to the suction port 12 via the connection tube 36. A filter 32 is provided between the connection tube 36 and the suction port 12 for preventing suctioned substances from entering the electric pump 14 and for preventing bacteria from entering the suction catheter. Next, the suction catheter is prepared, and the electric pump 14 is started by pressing the power switch 22.
[0023]
When the electric pump 14 is started, the electric pump 14 is connected to the distal end of the suction tube 38 or the suction tube 38 via a suction path including the ventilation path 16, the suction port 12, the connection tube 36, the suctioned object collection bottle 34, the suction tube 38, and the like. Negative pressure is applied to the tip of the suction catheter, and blood clots, sputum, nasal discharge, bodily fluids such as blood, etc. are sucked. Then, the suctioned material is dropped into the suction material collection bottle 34 and collected.
[0024]
The medical aspirator 10 is provided with a load cell (clogging detection means) 20 for measuring the weight of the aspirated matter collection bottle 34. When the suction catheter or the suction tube is clogged, the suction efficiency of the suction object such as blood decreases, and the weight increase rate of the suction sample collection bottle 34 decreases. Therefore, by measuring the change in weight of the aspirated matter collection bottle 34 with the load cell 20, clogging of the suction catheter or the suction tube can be detected. When the clogging is detected, a buzzer (clogging warning means) 25 immediately emits a warning sound to notify the worker that the clogging has occurred.
[0025]
The medical suction device of the present invention is particularly effective in percutaneous thrombectomy. In percutaneous thrombectomy, thrombus is removed by suction through a suction catheter passed from the femoral artery or radial artery to the chest.However, the suction catheter is thin and long, and there are many thrombus that are difficult to flow. Therefore, the suction catheter is easily clogged. In addition, since it is a surgery near the heart related to life and death such as myocardial infarction, the operator must concentrate on all the nerves in the surgery, and visually monitoring the clogging of the suction catheter and suction tube is an extra heavy burden. Because.
[0026]
The present invention is particularly effective for a medical suction device 10 having an electric pump 14 for vacuum suction inside. That is, in such a medical suction device 10, portability and mobility are emphasized as compared with a medical suction device relying on an external suction source, so that a small electric pump 14 is inevitably used. This is because there is not enough room for the suction force, and clogging such as thrombus is particularly likely to occur.
[0027]
The electric pump 14 is not particularly limited, and examples thereof include a diaphragm pump, a piston pump, and a vane type pump. A diaphragm pump is particularly preferably used. Diaphragm pumps consist of an elastic membrane made of rubber or plastic on one side of the pump chamber, and this elastic membrane is controlled from the back side by adjusting the gas pressure and liquid volume, or mechanically or electrically. It is a moving type. Thereby, the volume of the pump chamber is increased or decreased, and the pump mechanism sucks in from the inflow port and discharges from the outflow port by the valve mechanism formed in the inflow port and the outflow port. Diaphragm pumps are classified into a single-acting type having a single pump chamber and a double-acting type having two pump chambers on both sides of a reciprocating lever. The single-acting pump has a feature that suction is intermittent but easy to downsize. On the other hand, the double-acting pump has a feature that suction is averaged, and selection is made based on each feature depending on the application.
[0028]
The power supply of the medical suction device 10 may be an external power supply taken in from the outside via an outlet or the like, or may be an internal power supply such as a built-in battery. In general, a large number of cords are already scattered on the floor of an operating room or a catheter room, and it is desired to avoid further increasing the number of cords for powering the medical suction device 10 there. The use of an internal power supply eliminates the need for a power supply cord, thus solving this problem. In addition, the internal power supply is very convenient because it can be used anywhere, even outdoors.
[0029]
Further, the present invention is particularly effective for a medical suction device 10 having a battery for a power supply therein. In such a medical suction device 10, portability and mobility are emphasized as compared with a medical suction device that relies on an external power source such as a commercial power supply. Will be selected. For this reason, the electric pump 14 having a small amount of suction power is used, and clogging such as a thrombus is particularly likely to occur.
[0030]
The battery used as the internal power source may be any power source such as a primary battery such as a manganese dry battery, a secondary battery such as a nickel cadmium battery or a lithium ion battery, or a battery. Various electric devices and electric components are stored in the medical aspirator 10, and among them, the electric pump 14 is the device with the largest load. Therefore, the power supply voltage is set based on the operating voltage. Is preferred.
[0031]
The medical suction device 10 includes a bottle fixing means 24 for fixing the aspirated matter collection bottle 34 and a bottle illuminating means 26 for illuminating the inside of the aspirated matter collection bottle 34. The medical suction device 10 automatically monitors the suction status by the clogging detection means 20, but sometimes looks at the suction sample collection bottle 34, including when initially setting suction conditions and when observing the suction object. It is necessary to check the suction status visually. For this reason, it is preferable that a bottle illuminating means 26 is also provided at a position facing the bottle fixing means 24 so that the illuminated area can be seen well in a dark place such as an operating room or a corner of a catheter room.
[0032]
The bottle illuminating means 26 is provided so as not to protrude from the apparatus so as not to be damaged by contact with the aspirated matter collecting bottle 34 or the like. Preferably, a cover for protection is provided. As a lamp for illumination, a halogen lamp or an LED having a high luminance is preferably used.
[0033]
The bottle fixing means 24 is not particularly limited as long as it keeps the suction sample collection bottle 34 stable in a fixed position, and is not particularly limited. For example, as shown in FIG. 2, an annular thing in which the lower part of the aspirated matter collecting bottle 34 is fitted, or several rod-shaped objects standing so as to surround the lower side surface of the aspirated matter collecting bottle 34 , Or by using a clamp or the like.
[0034]
The medical suction device 10 is further provided with suction pressure adjusting means. The user can operate the pressure adjustment knob 28 while looking at the pressure indicator 30 to adjust the suction pressure suitable for the treatment, which is very convenient.
[0035]
In the medical aspirator 10 illustrated in FIGS. 1 and 2, the clogging detection unit is a load cell 20 that measures a change in weight of the aspirated matter collection bottle 34. A load cell is a commonly used means as a weight measuring means, and is a preferred embodiment also in the present invention.
[0036]
However, the clogging detection means in the present invention is not particularly limited. In another particularly preferred embodiment, the detection is performed by measuring a change in the flow rate of a suctioned substance such as blood in a suction catheter or a suction tube. For example, by using an electromagnetic flow meter or an ultrasonic flow meter, the flow rate of the suction tube 38 immediately before the suctioned sample collection bottle 34 is continuously measured during the suction operation, and when the flow rate becomes equal to or less than the set value, clogging occurs. You can judge.
[0037]
In another particularly preferred embodiment of the clogging detecting means, the detection is performed by counting the number of drops of the suctioned substance into the suctioned substance collection bottle 34. For example, the presence or absence of dripping is detected by a laser sensor or the like, and when the frequency of dripping becomes equal to or less than a set value, it can be determined that clogging has occurred.
[0038]
Further, detection based on a pressure change in the ventilation path 16 is also possible. When the suction catheter or the suction tube is closed, the suction pressure increases, so that it is possible to determine that clogging has occurred when the suction pressure exceeds a set value. A threshold may be provided for the output to the pressure indicator 30 to issue a warning. In any case, a set value and a threshold value for determining clogging must be variable.
[0039]
When the suction catheter or the suction tube is clogged, it is preferable to immediately notify the operator and take a prompt action to resume suction. The medical suction device 10 illustrated in FIGS. 1 and 2 employs a clogging warning unit that emits a warning sound by a buzzer. Other examples of the clogging warning unit that emits a warning sound include a bell, various electronic sounds, a pseudo sound, and the like, and are not particularly limited. If the warning means is provided by a warning sound, the operator does not need to look at the medical suction device 10 for clogging during the procedure, so that the operator can concentrate on the procedure sufficiently and the safety for the operation and the patient is significantly improved.
[0040]
Another preferred embodiment of the jam warning means is a warning light. The operator must check the lighting and blinking of the warning light by looking at the warning light. However, for visual confirmation, the clogging is surely warned without being confused with a large number of warning sounds in the operating room and the catheter room. Various lamps and LEDs can be used as the warning light.
[0041]
Although the medical suction device according to the present invention has been described in detail above, the present invention is not limited to the above cited / exemplified examples, and the shape and configuration of the medical suction device, the type of the electric pump and the internal power supply, and the clogging detection Means and clogging warning means, the type and configuration of the bottle fixing means and the bottle lighting means, etc. are implemented in various modified, modified, and changed forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention. What you get.
[0042]
【The invention's effect】
According to the medical suction device of the present invention, clogging of the suction catheter or the suction tube is automatically detected, so that it is not necessary for the operator to visually check the suction status, and the burden on the operator is greatly reduced. . Then, the worker can perform other necessary tasks with a margin, so that the safety for surgery and patients is significantly improved.
[0043]
This effect is particularly remarkable in a medical suction device for percutaneous thrombectomy, which is highly urgent and often causes clogging of the suction catheter.
[0044]
In particular, this effect is particularly exhibited in a medical suction device provided with an electric pump for reduced pressure suction or an internal power supply, which does not have a sufficient suction force.
[0045]
And by providing a clogging detection means for measuring a change in the flow rate of the aspirated matter, a change in the weight of the aspirated matter collection bottle, a change in the amount of the aspirated matter dropped into the aspirated matter collection bottle, etc., the clogging of the suction catheter or the suction tube can be more reliably performed. It can be detected.
[0046]
Also, in particular, by providing a clogging warning means such as a warning sound or a warning light, the operator is immediately notified of the clogging of the suction catheter or the suction tube, and a response to the patient or a treatment for resuming suction is performed. Will be able to do it quickly.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of a medical suction device according to the present invention and schematically explaining a main part.
FIG. 2 is an external perspective view of the medical suction device shown in FIG. 1 according to the present invention.
[Explanation of symbols]
10: Medical suction device 12: Suction port 13: Main body case 14: Electric pump 16: Ventilation path 18: Exhaust port 20: Load cell (clogging detection means)
22: power switch 24: bottle fixing means 25: buzzer (clogging warning means)
26: bottle illuminating means 28: pressure adjusting knob 30: pressure indicator 32: filter 34: aspirate collection bottle 36: connecting tube 38: suction tube

Claims (11)

血栓や痰、血液などの体液、等々を吸引するための医療用吸引器であって、吸引動作中の、吸引チューブ又は吸引カテーテルの詰まりを検知する、詰まり検知手段を備えた医療用吸引器。A medical aspirator for aspirating body fluids such as thrombus, sputum, blood, etc., comprising a clogging detecting means for detecting clogging of a suction tube or a suction catheter during a suction operation. 経皮的血栓除去手術用である、請求項1に記載の医療用吸引器。The medical suction device according to claim 1, which is used for percutaneous thrombus removal surgery. 減圧吸引のための電動ポンプを備えた、請求項1又は請求項2に記載の医療用吸引器。The medical suction device according to claim 1 or 2, further comprising an electric pump for suction under reduced pressure. 前記詰まり検知手段が、吸引物の流量変化を測定するものである、請求項1から請求項3のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 3, wherein the clogging detection unit measures a change in the flow rate of the suctioned object. 前記詰まり検知手段が、吸引物採取ボトルの重量変化を測定するものである、請求項1から請求項3のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 3, wherein the clogging detection means measures a change in weight of the aspirated matter collection bottle. 前記詰まり検知手段が、吸引物採取ボトル内の吸引物滴下量変化を測定するものである、請求項1から請求項3のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 3, wherein the clogging detection means measures a change in the amount of aspirated matter dropped in the aspirated matter collection bottle. 吸引チューブ又は吸引カテーテルの詰まりが生じたことを作業者に知らせるための詰まり警告手段を備えた、請求項1から請求項6のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 6, further comprising clogging warning means for notifying an operator that the suction tube or the suction catheter has been clogged. 前記詰まり警告手段が警告音である、請求項7に記載の医療用吸引器。The medical suction device according to claim 7, wherein the clogging warning means is a warning sound. 前記詰まり警告手段が警告灯である、請求項7に記載の医療用吸引器。The medical suction device according to claim 7, wherein the clogging warning means is a warning light. 吸引物採取ボトルの固定手段と、吸引物採取ボトル内を照らすためのボトル照明手段とを備えた、請求項1から請求項9のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 9, further comprising: means for fixing the aspirated matter collection bottle; and bottle illuminating means for illuminating the inside of the aspirated matter collection bottle. 電源用の電池を備えた、請求項1から請求項10のいずれかに記載の医療用吸引器。The medical suction device according to any one of claims 1 to 10, further comprising a battery for a power supply.
JP2002213718A 2002-07-23 2002-07-23 Medical aspirator Pending JP2004049706A (en)

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Cited By (15)

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JP2007528278A (en) * 2004-03-10 2007-10-11 ヘモネティクス・コーポレーション Post-operative fluid monitoring and alarm system
JP2010136987A (en) * 2008-12-15 2010-06-24 Tokunaga Soki Kenkyusho:Kk Body fluid suction device
US8344860B2 (en) 2004-08-02 2013-01-01 Hill-Rom Services, Inc. Patient support apparatus alert system
US8464380B2 (en) 2005-07-08 2013-06-18 Hill-Rom Services, Inc. Patient support apparatus having alert light
JP2013163014A (en) * 2012-01-10 2013-08-22 Blue Cross Kk Medical/nursing-care suction device
US8537008B2 (en) 2008-09-19 2013-09-17 Hill-Rom Services, Inc. Bed status indicators
KR101436093B1 (en) 2013-01-17 2014-09-01 남승현 Body fluid suction apparatus for corpse
US9655798B2 (en) 2013-03-14 2017-05-23 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
CN108433837A (en) * 2018-04-20 2018-08-24 吴凤炎 A kind of clear phlegm device of dental care portable
US10206836B2 (en) 2011-11-11 2019-02-19 Hill-Rom Services, Inc. Bed exit alerts for person support apparatus
WO2020246431A1 (en) 2019-06-03 2020-12-10 ニプロ株式会社 Suction bottle for thrombus aspirator and thrombus aspirator
WO2021205822A1 (en) * 2020-04-10 2021-10-14 株式会社村田製作所 Waste liquid storage control device
US11744600B2 (en) 2015-08-28 2023-09-05 Incuvate, Llc Aspiration monitoring system and method
US11826064B2 (en) 2018-06-15 2023-11-28 Incuvate, Llc Systems and methods for aspiration and monitoring
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JP2007528278A (en) * 2004-03-10 2007-10-11 ヘモネティクス・コーポレーション Post-operative fluid monitoring and alarm system
US8344860B2 (en) 2004-08-02 2013-01-01 Hill-Rom Services, Inc. Patient support apparatus alert system
US9220650B2 (en) 2005-07-08 2015-12-29 Hill-Rom Services, Inc. Patient support apparatus having alert light
US8464380B2 (en) 2005-07-08 2013-06-18 Hill-Rom Services, Inc. Patient support apparatus having alert light
US10561550B2 (en) 2005-07-08 2020-02-18 Hill-Rom Services, Inc. Patient support apparatus having alert light
US8537008B2 (en) 2008-09-19 2013-09-17 Hill-Rom Services, Inc. Bed status indicators
US8593284B2 (en) 2008-09-19 2013-11-26 Hill-Rom Services, Inc. System and method for reporting status of a bed
US8847756B2 (en) 2008-09-19 2014-09-30 Hill-Rom Services, Inc. Bed status indicators
JP2010136987A (en) * 2008-12-15 2010-06-24 Tokunaga Soki Kenkyusho:Kk Body fluid suction device
US10206836B2 (en) 2011-11-11 2019-02-19 Hill-Rom Services, Inc. Bed exit alerts for person support apparatus
JP2013163014A (en) * 2012-01-10 2013-08-22 Blue Cross Kk Medical/nursing-care suction device
KR101436093B1 (en) 2013-01-17 2014-09-01 남승현 Body fluid suction apparatus for corpse
US10918546B2 (en) 2013-03-14 2021-02-16 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US11464692B2 (en) 2013-03-14 2022-10-11 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US10512574B2 (en) 2013-03-14 2019-12-24 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US11833090B2 (en) 2013-03-14 2023-12-05 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US10709625B2 (en) 2013-03-14 2020-07-14 Hill-Rom Services, Inc. Foot end alert display for hospital bed
US10413465B2 (en) 2013-03-14 2019-09-17 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US9655798B2 (en) 2013-03-14 2017-05-23 Hill-Rom Services, Inc. Multi-alert lights for hospital bed
US11744600B2 (en) 2015-08-28 2023-09-05 Incuvate, Llc Aspiration monitoring system and method
CN108433837A (en) * 2018-04-20 2018-08-24 吴凤炎 A kind of clear phlegm device of dental care portable
US11826064B2 (en) 2018-06-15 2023-11-28 Incuvate, Llc Systems and methods for aspiration and monitoring
EP3978040A4 (en) * 2019-06-03 2023-01-11 Nipro Corporation Suction bottle for thrombus aspirator and thrombus aspirator
WO2020246431A1 (en) 2019-06-03 2020-12-10 ニプロ株式会社 Suction bottle for thrombus aspirator and thrombus aspirator
WO2021205822A1 (en) * 2020-04-10 2021-10-14 株式会社村田製作所 Waste liquid storage control device
CN117554556A (en) * 2024-01-12 2024-02-13 佳木斯大学 Gastric juice acidity detection device for digestive system

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