JPS62500913A - 創傷排液装置用脂肪バッフル - Google Patents
創傷排液装置用脂肪バッフルInfo
- Publication number
- JPS62500913A JPS62500913A JP60504921A JP50492185A JPS62500913A JP S62500913 A JPS62500913 A JP S62500913A JP 60504921 A JP60504921 A JP 60504921A JP 50492185 A JP50492185 A JP 50492185A JP S62500913 A JPS62500913 A JP S62500913A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- wound
- drainage
- container
- liquid
- 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.)
- Pending
Links
- 206010052428 Wound Diseases 0.000 claims description 76
- 208000027418 Wounds and injury Diseases 0.000 claims description 76
- 239000007788 liquid Substances 0.000 claims description 44
- 230000002209 hydrophobic effect Effects 0.000 claims description 36
- 239000000126 substance Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 210000001124 body fluid Anatomy 0.000 claims description 2
- 239000010839 body fluid Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 11
- 239000002657 fibrous material Substances 0.000 claims 2
- 230000004888 barrier function Effects 0.000 claims 1
- 239000011230 binding agent Substances 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 210000004369 blood Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000544 Gore-Tex Polymers 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/79—Filters for solid matter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/89—Suction aspects of liposuction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/78—Means for preventing overflow or contamination of the pumping systems
- A61M1/784—Means for preventing overflow or contamination of the pumping systems by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/98—Containers specifically adapted for negative pressure wound therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/08—Lipoids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7536—General characteristics of the apparatus with filters allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/82—Internal energy supply devices
- A61M2205/8206—Internal energy supply devices battery-operated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3003—Fluid separating traps or vents
- Y10T137/3084—Discriminating outlet for gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3109—Liquid filling by evacuating container
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- External Artificial Organs (AREA)
- Media Introduction/Drainage Providing Device (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。
Description
【発明の詳細な説明】
発明の名称
創傷排液装置用脂肪/ζツフル
発明の利用分野
この発明は創傷に接続自在で該創傷からの排液を収容する排′e、檜と、この排
液槽に大気圧以下の圧力を与える装置とを有する創傷連続真空排液装置に関する
。
発明の背景
この発明の譲受人に譲渡された米国特許出願第404゜791号は、上記種類の
創傷真空排液装置を開示している。
上記特許出願の装置は良好な動作をするが、出願人はこの種装置の改善に継続的
な努力を払ってきた。排液槽の液体室と真空路との間で、該排液槽内に疎水性フ
ィルタを設けることによって、例えばフロート弁が不要となるため、先願では装
置が簡単化されると共に、排液槽内の真空路およびR−スユニット内の真空ポン
プが、排液槽からの創傷排液Zユより汚染されるのを防止できたと、出願人は考
えている。
しかしながら、創傷排液がしばしば脂肪物質を含み、この脂肪物質は疎水性フィ
ルタに被着し、したがって該フィルタの目詰りを起し勝ちで、排液槽を所望の大
気圧以下のレベルまで排気して、創傷の連続真空排液をすることの妨げとなって
いることも、出願人は見出している。
したがって、この発明の目的は、以下の構成の創傷連続真空排液装置を提供する
ことにある。排液槽室と、ベースユニットの排気ポンプが接続自在な真空路との
間の接続路中に疎水性フィルタを介在させて、真空路および排気ポンプが創傷排
液で汚染されるのを防止する。しかして、疎水性フィルタが創傷排液中の脂肪物
質の被着を受けて目詰りを起すのを防止し、排液槽をベースユニットに接続して
該排液槽を繰返し排気することによって、排液槽の使用寿命期間を増大させるも
のである。
上記構成により、比較的安価で簡単な方法により疎水性フィルタを保護すること
ができる。
本発明の他の目的は、添付の明細書を読み、添付の図面をよく見れば、この技術
分野における通常の知識を有する者にとって明らかなことである。
実施例
以下、実施例によりこの発明の詳細な説明する。
閉鎖創傷用の連続真空排液装置lOはベースユニット12(第6図)と、排液槽
13(第1図、第2図)とを備えている。ベースユニットへ着脱自在に装着され
る排液槽は、その一部分が大気圧より低い圧力(負圧)へ排気される。創傷排液
管22を用いて真空排液の対象となる患者の創傷Wへ排液槽i3を接続する。
槽13内の負圧を保ったまま、核種13をベースユニットから外すことができる
。したがって、槽13はベースユニツ)12へ接続中のみならス、ベースユニッ
トから取外した後でも、創傷真空排液に使用できるので、患者が運ぶか患者用移
動台(図示せず)に乗せて、ベースユニット12から離れた場所へ排液槽13を
移すことができる。
第6図、第7図の実施例において、(−スユニット12はハウジング201を備
え、このハウジングの前面溝202内を下方へと、排液槽13を挿入できるよう
になっている。第7図に概略構成を示すように、)・ウジング201は制御ユニ
ット16を収納している。
この制御ユニット16は、この発明の譲受人に譲渡された先願の米国特許出願第
404.791号に示された種類のものでよく、電源スィッチ116の作動によ
り制御ユニット16が動作すると、電池ノミツク111のような電源から真空ポ
ンプ31用電動機32が付勢される。上述の部材16,31,32,111,1
16は実質的に前述の米国特許出願第404.791号に記載されたように動作
するのが好ましい。すなわち、ベースユニット12のハウジング201に形成し
た凹部112にレセプタクル113を挿入することによってスイッチ116の作
動子117が作動すると、制御ユニット16は(従来の真空変換器294により
)排液槽13内の真空レイルを検出し、不充分な真空レベルであれば、排液槽1
3内の圧力を所望の大気圧以下のレベルまで下げるのに充分な時間だけ、電動機
とポンプのユニッ)32.31を駆動させる。
図示の実施例では、ハウジング201の左端(第6図)の凹部112内へ垂直に
滑入できると共に該凹部から取外しできるユニットとして構成された電池パック
111が、溝係入舌片形のレセプタクル113によ。
つて凹部112内で垂直に案内される。第6図に実線で示すハウジング内へ電池
ノミツク111を装着すると、電池パック111と、スイッチ116や制御ユニ
ット16を含むハウジング201内の電気装置との間の電気接触が、第7図に概
略図示するように、相対向する垂直可動接点115によって得られる。
排液槽13(第1図、第2図)は、上方開口を有するほぼ長方形の中空容器22
0を備えている。中空容器の頂面ば固定力・ζ−223で塞ぐ。力・ζ−223
の左右端部224,226は容器220の側面を越えて突出している。容器22
0の右側部分上方で力/5−223に垂直に固定して配置された排出口228は
、容器から液体を排出するための貫通孔229を有する。排出口228の頂部に
設けられる弾性キャップ231は裾部232を有し、この裾部232は貫通孔2
29に嵌入されて排出口を封止し、該排出口を通って容器220内へ漏込む空気
を阻止する。図示の実施例では、容器が大気圧以下だとキャップ231の頂面2
34が撓んでへこみ、容器内が上記大気圧以下の状態にあることを目視できる。
排出口228に形成した下部切取部238へ、キャップ231に固定した保持リ
ング236を嵌入することにより、容器へ液体を注入する際キャップ231を排
出口からはずしても、該キャップを紛失しなくてすむ。
上向きに開いた凹部241がカッ々−223の中心部分からほぼカッ々−の左端
まで延びている。この凹部241には板状蓋242が密閉固定されて、弾性管状
弁部材247が有する半径方向フランジ246をカッ々−223の補助凹部24
8内に保持する。管状弁部材247の下端に片道のチェック弁249が形成され
る。
図ではいわゆる「かものはし」形の弁であって容器220への流体流入はできる
が、容器からの流体流出は阻止するようになっている。板状蓋242は垂直円筒
部材251を有する。円筒部材251は管状弁部材247を隙間なく囲んで該部
材247よt)も上方へ延びている。また、円筒部材251には直径上に対向配
置されたほぼ5字状の/ζヨネットロツクみぞ大尉252が形成されている。弾
性部材247と円筒部材251とで、創傷排液管22の出口端に設けた従来のコ
ネクタプラグ256にはめ合わされるソケットを形成している。コネクタプラグ
256が有する半径方向のノ々ヨネットピン257は、J字状ロックみぞ穴25
2と協動してプラグ256をンケツ)251,247内へ着脱自在に保持する。
この場合、プラグは外形が切頭円錐状の底部258を有し、この底部258がか
ものはし弁249から上方へ離間して管状弁部材247の上部へ密閉嵌合される
。
円筒部材251の左側で板状蓋242の下面内を左。
右に延びる凹部262と、カッζ−223の左側突出端部224内を凹部262
の端から下方へ延びる垂直孔243、および容器220の左側部分で力/2−2
23の部分内を下方へ延びる垂直孔264とによって真空通路が形成される。
市販の円板状の微小多孔質疎水性フィルタユニット266(第2図、第4図、第
5図)が容器220の左側上方部分内に設けられ、このフィルタユニットは中空
アダプタ271を介して孔264と連通ずる、右方へ突出した中空出口ステム2
67を有する。図示の実施例では、微小多孔質疎水性フィルタユニット266は
円板状の周壁272を備える。下部が切取られたこの周壁からステム267が延
びている。また、周壁272内にはポリプロピレンで裏張りされた?リテトラフ
ルオルエチレン(FTFBまたはテフロンとして公知〕の0.2ミクロンスクリ
ーン273が収納されている。スクリーン273の材料はゴレテツクス(Gor
etex)111177として知られている。上記のようなフィルタユニットは
イリノイ州・ヘブロンのフィルタチック社から購入できる。疎水性フィルタユニ
ット266は気体を通すことができる(第5図中矢印Gで示すように)が液体は
通せない(矢印りで示すように)。
真空通路264,262,243(第2図)の左端において、容器の左側近傍で
カッZ−226の左端から垂下する一体の脚274の一部分に、下方へ延びる孔
243が形成されている。脚274を下った中間近辺で、壁276が径方向に延
びて孔243の底部を形成する。
したがって、孔243は下方へ開口したより大径の凹部277から分離される。
凹部277の下端は真空ポート278をなす。
片道のチェック弁281は弾性全弁ヘッド282を有する。この弁ヘッドからは
、弾性共軸ステム283が壁276内の中央孔を通って上方へ延びている。ステ
ム283の下端部284は壁276のすぐ上方で拡大され、半径方向に大きなヘ
ッド282を凹部277の上端壁に対して確実に密閉接触させて保持する。壁2
76の周縁部分には複数個の孔が形成されており、凹部277内の空気圧が孔2
43内の空気圧より高いとき、すなわち、容器220内が大気圧以下であるとき
、全弁ヘッド282が半径方向で上記複数個の孔と重なり常時これらの孔を閉じ
ている。一方、凹部277内の圧力が容器220内の圧力以下に降下するのに応
じて弁ヘッド2820周縁は下方へ撓むことができ、これによって、疎水性フィ
ルタ266、通路264゜262.243、次に下方の凹部277を介して容器
から空気が引出される。
図示の実施例では、ペースユニットのハウジング201は凹部288(第6図、
第7図)を有する。凹。
部288は、容器が装着される受入溝202の直ぐ左側で上方へ開口している。
モして凹部288の大きさは、容器力/’r−223の垂下脚274が、隙間を
もって凹部288の内部で下方へ受入れられるよう定められている。凹部288
の床289を介して、中空円筒取付具291が上方へ突出し、弾性環状シール部
材292が取付具上に共軸に固定される。取付具291は真空路293によって
真空ポンプ31へ接続され、該真空路は制御ユニット16中の従来の真空変換器
294にも接続するので、制御ユニットエ6は真空路293内の大気圧以下の圧
力ンシルによる影響を受けることができる。取付具291は孔あきヘッド296
を有する。
容器220が前面開口溝202に収容され、垂下脚274が第7図示の如く四部
288の内部で下方へ受入れられると、環状シール292により真空ボート27
8が密閉されて、真空ポンプ31と排液槽カッ々−223内の凹部277との間
に気密真空接続が形成される。真空ポンプ31が動作して凹部277内の気体圧
を下げ、この気体圧が容器220内の気体圧以下のレベルになると、圧力差によ
って弁ヘッド282の周縁が引き下げられて、凹部277と真空路263.26
2゜243とを連通させるので、疎水性フィルタ266を介して容器220の内
部へも連通し、容器内圧力を所望の大気圧以下圧力まで下げる。通常、上記のよ
うな真空ポンプ31の容器220への接続は、排液管22を閉鎖創傷Wへ据付け
た後に行なう。
第6図、第7図の実施例では、排液槽13がベースユニット】2の下方へ収容さ
れる際に(このとき容器220は前方開口溝202内にあり脚274は凹部28
8の上方開口に受入れられている)、脚274の側面と接触することによっ−C
、スイッチ作動子117が押されると真空ポンプ31が作動される。そして、図
示の実施例では、第7図のき一スユニッ)12内で排液槽13が排気位置からは
ずれるというような意図しない移動をするのを阻止する機械的補助手段としての
機能をもスイッチ作動子117を有している。実際、1実施例としては、脚27
4の側面にスイッチ作動子ぜタン117を受入れる浅いへこみを設け、ベースユ
ニツl−12の溝202および凹部288内でυ[液槽13がその排気位置に確
実に係止されるように構成できる。
しかし、第2図、第6図、第7図の好ましい実施例においては、排液槽13をベ
ースユニット12へ挿入中に、脚274の側面の斜面部298によって作動子1
17が押され、その後、作動子は脚274へ単に摩擦係合する。一方、カッニー
223の右側に固定され、そこから垂下する帯299(第1図、第2図)をベー
スユニット12の右側から突出するピン300(第2図、第6図)ヘゼタン止め
して、脚274の底が環状シール部材292に対して、確実に密閉保持されるの
を助け、真空ポート278を密閉する。このようにして、排水管22を閉鎖創傷
Wへ挿入したまま容器220を真空ポンプ31により大気圧以下へ排気できる。
排液槽13を第7図の位置でペースユニットエ2へ取付けたまま保管できる。こ
れとは別に、上記のように排気された排液槽をベースユニット12に対して上方
へ持上げて、スイッチ作動子117を斜面部298から外し、排液槽を上昇させ
てベースユニット12との接続を解いても、その後において、排液管22により
患者に接続された4シト液槽13は、創%Wからの排液の吸上げを続けることが
できる。実際、前述の米国特許出願筒404,791号と同様な方法によって、
排液槽を患者と一緒にベースユニット12から離れた場所へ移すことができる。
ベースユニツ)12による排液槽13の排気の間、疎水性フィルタユニット26
6は容器220内の液が該フィルタを通って、中空アダプタ271、真空路26
4.262,243、およびベースユニット12へ流込むのを阻止する。同様に
、排液槽13を4−スユニット12から外しているときは、疎水性フィルタ26
6は容器220から液体が該フィルタを通って、アダプタ271と真空路264
,262,243へ入込むのを阻止する(これによって、容器220を再度排気
するために、後で排液槽をベースユニツ)12に接続したとき、ベースユニツ)
12内の真空ポンプ系を汚すといった不具合を防止できる)。したがって、疎水
性フィルタユニット266を設けたことによって、排液に対して真空路264,
262,243を閉じるための傾斜応答弁または充填応答弁が不用となる。また
、(容器220に液体が充填されていないと仮定した場合)、疎水性フィルタユ
ニット266を設けたことによって、いつでも4−スユニット12により、排液
槽13からの気体を排気して容器220内を大気圧以下に回復できる。
疎水性フィルタユニット266は気体を通すが液体を通さないからである。
通常、第2図に示すよ)に排液槽13はベースユニット12へ垂直位置で取付け
る。しかしながら、排液槽13をペースユニツ)12から外した場合、排液槽は
傾けられたり、揺動させられたり、あるいは別の仕方で動かされることがあり、
その結果、容器220内の液体が疎水性フィルタユニット226の表面上に飛び
散る。
疎水性フィルタ266に脂肪物質(収集される体液中の脂肪成分)が付着し、そ
の結果目詰りを起すのを防止するため、無極性材料の孔あきフッフル302を容
器220の内部を横切るように容器内部に固定して、創傷液入口弁249と疎水
性フィルタ266との間の場所で、容器内部を2個の室303,304 (第2
図)に分割する。すなわち、創傷排液管22と排出口228とは室303と連通
し、疎水性フィルタユニット226は室304と連通する。
図示の実施例では、ノζツフル302が、容器220の内部の全長および厚さ全
体に亘って延びるほぼ長方形のノミネルとして形成されている。ノqツフル30
2の厚さは適宜選べるが、図示の実施例の場合、6.35爛(1/4インチ)か
ら約15.88閣(5/8インチ)の範囲にあり、例えば、12.7 tran
(”/2インチ)である。容器220内の液体中脂肪物質と接触できる無極性
材料面積をできるだけ広くするため、繊維を雑然と重ね合せて、6ツフル302
を繊維マットとして形成するとよい。このような繊維マットでは極めて少量の合
成樹脂、好ましくは、無極性樹脂によって繊維を相互に保持させることができる
。無極性材料の適切な例としてポリプロピレン、ポリエチレンおよびポリスチレ
ンなどがある。このような詰物状(・ξラド)・ζツフル302はそれ自身でほ
ぼ形状維持機能を有する。図示の実施例では、ノζツフル302は手で折曲する
のに充分な可撓性を有するが、通常使用時・ζツフルを通る創傷排液により変形
を受けるほどの可撓性はない。
、Sツフル302を他の方法で有孔状にして創傷排液を通し、かつ脂肪物質の吸
引を最大にする広い表面積を与えることができるであろうが、この発明の実施例
に係る繊維マットは安価で、簡単に入手でき、特に有効な有孔構造と広い表面積
の29ツフルを与える。・Sツフル302用の繊維マットとして有用なものが、
「スーパポリッシュ・ポリエステル」の名でミネソタ州・ミネアポリスのミネソ
タ・マイニング・アンド・マニュファクチヤリング(3エム)から市販され簡単
に入手でき、また、家庭用および工業用の手磨きまたはたわしとして版売されて
いる。
ポリエステル、ポリプロピレンおよびポリスチレンはこの順番に一層の無j性を
呈するから、ポリプロピレンとポリスチレンの79ツフル302は、ポリエステ
ルの・々ツフルよりも有効であろう。
ノ々ツフル302は機械的フィルタとして動作しない。
換言すれば、大きな粒子を排除し、小さな粒子を通過させるような大きさの細孔
にもとづいて動作するものではない。実際、創傷排液のうちバッフル302によ
り阻止しようとする成分、すなわち、脂肪物質は・ζツフル302で停止させる
必要のない赤血球のような他の成分よりも物理的に小さいことがある。したが・
って、機械的原理とは別に、脂肪物質が無極性物質であることに着目し、無極性
物質の相互吸引を利用して、Sツフル302の無極性材料により創傷排液中の脂
肪物質を吸引している。
ノ々ツフル302は、比較的長くて曲りくねった小径貫通路を多数含んでいる。
したがって、・々ツフルを通過しようとする脂肪物質は、比較的長時間に亘って
・Sッフルの無極性材料表面近くに留まることを強いられるので、・々ツフルの
無極性材料表面に吸引、トラップされる確率が高くなる。創傷排液にさらされる
材料表面積を大きくしであるから、脂肪物質がノ々ツフル材料表面に吸引される
機会がさらに増す。したがって、創傷排液中の種々の有極成分は、ノ々ツフル3
02の無極性材料に吸引されることなく、・々ツフルの厚さ方向に自由に通過す
るが、液体中の無極性成分である脂肪物質は、ノζツフルの材料によりトラップ
されそこに付着することになる。
このようにして、創傷排液中の脂肪物質および脂肪物質に起因する疎水性フィル
タの目詰りが、・々ツフル302によって防止される。この実施例の疎水性フィ
ルタはPTFB材料からなるが、この材料も無極性であり、したがって創傷排液
中の脂肪物質を吸引する。しかしナカラ、バッフル302を設けたために、この
ように創傷排液の無極性成分(脂肪物質)により目詰りを起し勝ちな疎水性フィ
ルタ266でも使用可能となる。
図示の実施例では、容器の前面、背面および底面の壁の内側に成形により突起部
308を設け、これらの突起部を用いて・ζツフル302を容器220内に位置
決め固定する。カッ々−223を容器220へかぶせる前に、ノ々ツフル302
を突起部308の両縁間に滑入して容器202へ据え付ける。
次に動作を説明する。
これまでの説明でこの発明装置の動作は明らがであろうが、以下にこれをまとめ
てみる。
外科手術患部としての閉鎖創lW内に創傷排液管22の遠方端部を挿入し、排液
槽13をベースユニット12へ装着すると、スイッチ作動子117と帯299に
よって、排液槽の真空ポート278がベースユニッ)12のシール292へぴっ
たり係着され、凹部277内の孔あきヘッド296が片道弁281の下に位置す
るようになる。スイッチ作動子」17と斜面部298との保合により、該スイッ
チ作動子117が押されると、スイッチ116がオンして制御ユニット16が作
動される。しかして、制御ユニット16内の真空センサ294によって、容器2
20内の圧力が所望の大気圧以下の圧力範囲以上、たとえば大気圧にあると検出
されると、真空ポンプ31の電動機32が付勢され、真空ポンプ31の始動によ
り、孔あきヘッド296のところと排液槽13の凹部277内の圧力が低下する
。
この圧力低下の結果、弁281が開き真空路264゜262.243%アダプタ
271および疎水性フィルタ゛266を介して、真空ポンプによる容器220内
部の排気が行なわれる。制御ユニット16の動作は前述の米国特許出願第404
.791号と同様である。
その結果得られる容器220内の大気圧以下の圧力と、閉鎖創傷W内の大気圧と
の間に差が生じ、創傷Wからの排液が排液管22および片道弁249を介して容
器220の室303へ流入する。
通常、創傷Wから流入する液体は血液のほかに組織、骨の外科処理から生じる脂
肪物質のような物質を含んでいる。創傷排液は懸濁溶液としての血液からなると
考えることができる。脂肪物質は血液中の浮遊成分の1つである。血液の約75
%は水である。水は有極性物質であるから、血液の全体的特性は有極性であると
いえる。有極性成分は水に溶ける傾向を呈し、血液中の固形物は一般に水溶性で
あるから有極性である。特性上、無極性物質は非水溶性である。前述のように、
・々ツフル302は無極性である。創傷排液中の無極性成分は、疎水性フィルタ
266へ到達する前に、・ζツフル302の材料と接触しなければならない。そ
して、無極性バッフル材は創傷排液中の無極性物質、すなわち脂肪物質を吸引す
る。しかして、創傷排液中の無極性物質はノ々ツフル302の材料により捕獲さ
れる。その結果、主に創傷排液の有極成分がバッフル302を自由に通過し、こ
の成分のみが室304に侵入できて脂肪物質が排除される。したがって、排液槽
を傾けたり、揺動したりした時あるいはほぼ充満させた際に、疎水性フィルタ2
66は室304内の液体と接触するが、無彊性物質とくに脂肪物質との接触を避
けることができる。しかして、疎水性フィルタ266は時々ぬれていくが、付着
による目詰りを起すことはない。したがって、疎水性フィルタを介して容器22
0からの気体が真空ポンプ31によって排気されるが、一方、真空ポンプ31を
汚したり不能にするような液体流がフィルタを通ることはない。
もしも疎水性フィルタ26Gに、患者の創傷から集められた脂肪物質が多量に付
着すると、排液槽】3内の真空度が低くとも、制御二二ッ)16内のセンサ29
4は排液槽内の真空度が高すぎると判断して真空ポンプ31を消勢する。したが
って、排液槽13はもはや適切に創傷Wから真空排液できなくなり、その時点で
装置は動作不能となる。
外科手術の性格と、排液中の脂肪物質含有量、および疎水性フィルタ266への
付着を招く排液槽の揺動(もし行なえば)によるが、疎水性フィルタへの付着は
ほんの数時間(例えば2〜3時間)でフィルタの動作不能を引起す程度となる。
一方、排液槽13は普通24〜72時間の間、患者の創傷から排液しなければな
らない。したがって、ノ々ツフル302がないと、時には排液槽13を使い切ら
ないうちに交換する必要が生じる。ところが、ノζツフル302を設けたことに
よって、1つの排液槽13をベースユニット12で周期的に再排気しつつ、患者
に普通必要とされる24〜72時間に亘り使用することができる。
(−スユニット12により排液槽13がいったん排気されると、患者に対して任
意の場所に置いたり、又は患者を移動させたりするために排液槽を4−スユニッ
トから外しても、閉じた弾性キャップ231(中心部がへこんで容器220内が
大気圧以下であることを指示する)と、閉じた全弁281とによって容器220
内の大気圧以下の圧力が維持される。
通常、容器220の内部が真空ポンプ31で排気され、所望範囲の大気圧以下圧
力に達し、真空ポンプ31がオフされた後に、排液槽13をベースユニット12
から外す。実際、排液槽13を持上げてベースユニット12からはずすと一スイ
ツチ作動子117と排水槽13の垂下部274との接触がなくなるので、作動子
117が不作動となり、真空ポンプ31がオフする。
最終的に容器220が一杯になったら、キャップ231を排出口からはずし、容
器220を傾けて排水槽中の液体を排出する。これにより、容器内圧力は大気圧
となる。また、容器220が創傷排液で部分的に充満したり、時には容器内圧力
が大気圧に達し、キャップ231の頂部234がふくれて排液槽の排気の必要性
を指示することがある。いずれの場合も、排液槽を近くのベースユニット12に
接続し、上述の方法で大気圧以下に排気する。
排液槽13の創傷排液機能が完了すると、排液管22を廃棄するが、ベースユニ
ット12は他の排液槽と一緒に他の患者に対して再度使用できる。この場合、疎
水性フィルタ266により排液槽13内の液体が(−スユニット12に達してい
ないから汚れの危険はない。
以上、この発明を好ましい実施例を用いて詳細に説明したが、特許請求の範囲を
逸脱しない限りにおいて種々の変更、修正が可能であることはもちろんである。
図面の簡単な説明
第1図は、この発明の実施例の分解斜視図、第2図は第1図の排液槽の部分切断
正面図、第3図は第2図のほぼm−m線に沿う拡大断面図、第4図は第2図のほ
ぼIV−IV線に沿う断面図、第5図は第4図に示す疎水性フィルタユニットの
ほぼv−v線に沿う断面図、第6図は第1図の排液槽を収容するベースユニット
の一部切断斜視図、第7図は第6図のほぼ■−■線に沿う断面図である。
国際調査報告
Claims (19)
- 1.大気圧以下の圧力へ排気可能な排液槽と、この排液槽を創傷に接続して該創 傷から液体を真空排液するための創傷接続手段と、排液槽を真空源に接続して該 排液槽内に大気圧以下の圧力を与える真空源接続手段と、排液槽から真空源接続 手段への液体流を阻止して、該真空源が該排液槽からの液体により汚染されるの を防止する液体阻止手段と、排液槽内に設けられ、液体阻止手段と創傷接続手段 とを分離して、該創傷接続手段から該液体阻止手段への脂肪物質の移動を防止す る選択手段とを備えている創傷連続真空排液装置。
- 2.特許請求の範囲第1項において、選択手段は、脂肪物質の流れを妨害するが 、その他の創傷排液の流れは通す無極性表面特性を有する部材を備えている創傷 連続真空排液装置。
- 3.特許請求の範囲第2項において、前記物質が合成無極性物質である創傷連続 真空排液装置。
- 4.特許請求の範囲第2項において、前記部材は、脂肪物質の流れに対して比較 的大きな材料表面積を呈する無極性繊維材料のマツトを備えていて、脂肪物質を 流れにより前記部材へ強く吸引し、繊維相互が結合材によりマツト状に保持され ている創傷連続真空排液装置。
- 5.特許請求の範囲第1項において、選択手段は、排液槽を別個の第1室および 第2室に分割するバツフルを備え、創傷接続手段は第1室に配置され、真空源接 続手段は第2室に配置され、バツフルは無極性合成材料からなり、この合成材料 は自身でほぼマツト形状維持機能を有している創傷連続真空排液装置。
- 6.特許請求の範囲第5項において、排液槽は、内部空間を囲む壁を具備した中 空容器を備え、前記壁のそれぞれにバツフルの位置を定める手段を設けて、内部 空間を第1室および第2室に分割している創傷連続真空排液装置。
- 7.特許請求の範囲第6項において、創傷接続手段は第1室内の容器壁に形成さ れた創傷排液部を備え、第1室内の容器壁は容器内の液体を排出するための容器 排出部を有し、真空源接続手段は真空源が接続自在な真空ポートを備え、この真 空ポートと第2室とを分離している液体阻止手段は疎水性フイルタを備え、この 疎水性フイルタを介して真空源による気体排気を可能とするが、容器からの液体 除去を阻止している創傷連続真空排液装置。
- 8.液体流路を形成する手段と、この液体流路内に挿入される無極性物質の液体 と接触する多孔バツフルを有し、脂肪物質などの通過を阻止する一方、他の液体 流を通過させるバツフル手段とを備えている液体流路中での脂肪物質の通過を選 択的に限止する装置。
- 9.特許請求の範囲第8項において、バツフルは無極性材の繊維からなるパツド を備え、繊維はマツト状に配列され結合材で相互に保持されて、パツド自身でほ ぼ形状維持機能を有し、結合材が体液の影響を受けないようになつている選択的 阻止装置。
- 10.特許請求の範囲第8項において、バツフルは繊維からなるマツトを備え、 繊維がポリプロピレン、ポリエチレンおよびポリスチレンからなる群から選択さ れた繊維材からなる選択的阻止装置。
- 11.大気圧以下の圧力へ排気可能な排液槽と、この排液槽を創傷に接続して該 創傷から液体を真空排液するための創傷接続手段と、排液槽を真空源に接続して 、該排液槽内に大気圧以下の圧力を与える真空源接続手段と、排液槽から真空源 接続手段への液体流を阻止して、該真空源が該排液槽からの液体により汚染され るのを防止する液体阻止手段とを備え、この液体阻止手段は、排液槽の内部へ向 いた一方の側を有し、該排液槽に取付けられた微小多孔質疎水性フイルタを有し 、真空源接続手段は、排液槽に形成されて疎水性フイルタの他方の側から排液槽 の外部へ開口した真空ポートまで延びる真空路を有し、疎水性フイルタか排液槽 の内部から真空路へ溢出する液体流を阻止する手段として設けられている創傷連 続真空排液装置。
- 12.特許請求の範囲第11項において、真空源接続手段は、疎水性フイルタと 真空ポートとの間に設けた弁を備え、この弁は常時は閉じて外気が排液槽に入る のを阻止すると共に、真空ポートに真空源が接続されると開成するようになつて いる創傷連続真空排液装置。
- 13.特許請求の範囲第12項において、真空ポートの所で排液槽に接続する真 空源を備え、この真空源は、真空ポートと共軸のシール手段を含んでその間の接 続を気密にしている創傷連続真空排液装置。
- 14.特許請求の範囲第13項において、ベースユニツトを備え、真空源は該ベ ースユニツトに収納された真空ポンプからなり、ベースユニツトは該真空ポンプ に給電するための電源接続手段と、この電源接続手段から真空ポンプへ給電する ために作動されるスイツチ手段とを有する創傷連続真空排液装置。
- 15.特許請求の範囲第14項において、スイツチ手段は作動部材を有し、シー ル手段と真空ポートとが共軸となる方向で排液槽をベースユニツトに滑入し、真 空源の真空ポートヘの接続が行なわれると、作動部材は排液槽の一部分により作 動され、また、この作動部材は真空ポンプを付勢して、該排液槽から排気するよ うに接続され、作動部材が排液槽の一部分に係合することによつて、排液槽とベ ースユニツトとの間の真空シールを補助している創傷連続真空排液装置。
- 16.特許請求の範囲第11項において、排液槽は、頂面カバーがかぶせられる カツプ状の上向き開口を具備した容器を備え、カバーの一端部は容器を越えて突 出し、真空源接続手段は突出端部内に設けられて真空源に接続自在な真空ポート と、突出端部の内側の真空ポートから延びて液体阻止手段を介して前記容器の内 部に開口する真空路とを有し、液体阻止手段がカバーの下方に設けられて、容器 内部へ向けられている創傷連続真空排液装置。
- 17.特許請求の範囲第16項において、創傷接続手段は、真空源接続手段から 離れた位置でカバー上に設けられ、該カボーを通つて容器内部と連通する手段を 備え、カバーに設けられた排出口が容器内部と連通し、この排出口に取付けられ たキヤツプが、該排出口を閉じて容器への空気漏入を阻止し、キヤツプを排出口 から外すと、容器内の液体が排出口を介して排出されるようになつている創傷連 続真空排液装置。
- 18.特許請求の範囲第17項において、キヤツプは弾性を有し、一部分が当該 部分を横切る圧力降下により変形して、容器内の大気圧以下の圧力を指示するよ うになつている創傷連続真空排液装置。
- 19.特許請求の範囲第17項において、容器を2個の室に分けるバツフルを備 え、第1室は真空源接続手段と連通し、この第1室内へ液体阻止手段が向けられ 、第2室は創傷接続手段および排出口と連通し、バツフルは多孔性で第1,第2 室間を通る流体から脂肪物質を除去しうる無極性材料からなつている創傷連続真 空排液装置。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US670177 | 1984-11-09 | ||
| US06/670,177 US4655754A (en) | 1984-11-09 | 1984-11-09 | Vacuum wound drainage system and lipids baffle therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62500913A true JPS62500913A (ja) | 1987-04-16 |
Family
ID=24689310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60504921A Pending JPS62500913A (ja) | 1984-11-09 | 1985-10-24 | 創傷排液装置用脂肪バッフル |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4655754A (ja) |
| EP (1) | EP0205614B1 (ja) |
| JP (1) | JPS62500913A (ja) |
| AU (1) | AU5016185A (ja) |
| CA (1) | CA1258414A (ja) |
| DE (1) | DE3582799D1 (ja) |
| WO (1) | WO1986002844A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE3582799D1 (de) | 1991-06-13 |
| EP0205614A4 (en) | 1988-02-23 |
| WO1986002844A1 (en) | 1986-05-22 |
| EP0205614B1 (en) | 1991-05-08 |
| AU5016185A (en) | 1986-06-03 |
| EP0205614A1 (en) | 1986-12-30 |
| CA1258414A (en) | 1989-08-15 |
| US4655754A (en) | 1987-04-07 |
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