JP6062921B2 - 医療用活栓 - Google Patents
医療用活栓 Download PDFInfo
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- JP6062921B2 JP6062921B2 JP2014507900A JP2014507900A JP6062921B2 JP 6062921 B2 JP6062921 B2 JP 6062921B2 JP 2014507900 A JP2014507900 A JP 2014507900A JP 2014507900 A JP2014507900 A JP 2014507900A JP 6062921 B2 JP6062921 B2 JP 6062921B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- 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
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Description
ハウジングは、貫通孔を有する筒状の本体部と、上流ポート部と、下流ポート部と、側管用ポート部とを備えている。上流ポート部は、本体部の外周に設けられる。下流ポート部は、本体部の外周に設けられ、本体部を間に挟んで上流ポート部とは反対側に配置される。側管用ポート部は、本体部の外周における上流ポート部と下流ポート部との間に設けられ、第1連通孔と、第1連通孔よりも開口面積が小さい第2連通孔とを有する。
コックは、本体部の貫通孔に摺動回転可能に挿入される円筒部と、円筒部を回転操作するハンドル部とを有する。円筒部には、液体が通過する第1流路溝と、第2流路溝とが設けられている。
そして、上流ポート部、側管用ポート部及び下流ポート部を連通させる基準位置にコックがある状態において、第1流路溝は、上流ポート部と側管用ポート部における第1連通孔と連通する。また、第2流路溝は、側管用ポート部における第2連通孔と下流ポート部と連通する。
その結果、側管用ポート部を通過する流路が形成されるため、側管用ポート部に残留する薬液を上流ポート部から流入した薬液によって押し出すことができる。
1−1.医療用活栓の構成例
まず、図1〜図4を参照して本発明の医療用活栓の実施の形態例(以下、「本例」という。)の構成例について説明する。
図1は、本例の医療用活栓を示す分解斜視図、図2は、本例の医療用活性を示す正面図、図3は、図2に示すL−L線で断面した状態を示す断面図である。
図1及び図2に示すハウジング2は、筒状の本体部6と、薬液が流入及び流出する上流ポート部7及び下流ポート部8と、上流ポート部7及び下流ポート部8を流れる薬液と異なる薬液が注入される側管用ポート部9と、を有している。
コネクタ4は、弁体21と、弁体21を保持する保持部22とを有している。弁体21は、弾性変形可能に形成されている。この弁体21の材料としては、この弁体21の材料としては、例えば、天然ゴム、イソプレンゴム、ブタジエンゴム、スチレン−ブタジエンゴム、ニトリルゴム、クロロプレンゴム、ブチルゴム、アクリルゴム、エチレン−プロピレンゴム、ヒドリンゴム、ウレタンゴム、シリコーンゴム、フッ素ゴムのような各種ゴム材料や、スチレン系、ポリオレフィン系、ポリ塩化ビニル系、ポリウレタン系、ポリエステル系、ポリアミド系、ポリブタジエン系、トランスポリイソプレン系、フッ素ゴム系、塩素化ポリエチレン系等の各種熱可塑性エラストマが挙げられ、これらのうちの1種または2種以上を混合したものであってもよい。
次にコック3について図1〜図5を参照して説明する。
図4は、コック3を示す斜視図、図5は、コック3の側面を示す展開図である。
コック3は、ハウジング2の本体部6に装着されて、ハウジング2を流れる流路を切り換える。図1及び図4に示すように、コック3は、円筒部31と、円筒部31を回転操作するハンドル部32から構成されている。
また、第1流路溝33に第1連通部37と第2連通部38を設けることにより、第1連通部37から第1液体導出部39へ流れ込む薬液と、第2連通部38から第1液体導出部39へ流れ込む薬液とが合流する際に、乱流が生じやすくなり、薬液の滞留を防止することができる。
次に、図3〜図12を参照して上述した構成を有する医療用活栓1の動作について説明する。
図6は、上流ポート部7、側管用ポート部9及び下流ポート部8が全て連通した状態を示す斜視図、図7は図6に示す医療用活栓を下流ポート部8側から見た斜視図である。
図8は、コック3を基準位置から45度回転させた状態を示す斜視図、図9は、図8に示す医療用活栓1を下流ポート側から見た斜視図である。図10は、図8に示すT−T線で断面した状態を示す断面図である。
図11は、コック3を基準位置からハンドル部32側から見て反時計回りに90程度回転させた状態を示す断面図である。
図12は、コック3を基準位置から180度程度回転させた状態を示す断面図である。
Claims (7)
- 液体が流入及び流出するハウジングと、
前記ハウジングに装着され、前記ハウジングに流れる前記液体の流路を切り換えるコックと、を備え、
前記ハウジングは、
貫通孔を有する筒状の本体部と、
前記本体部の外周に設けられた上流ポート部と、
前記本体部の外周に設けられ、前記本体部を間に挟んで前記上流ポート部とは反対側に配置される下流ポート部と、
前記本体部の外周における前記上流ポート部と前記下流ポート部との間に設けられ、第1連通孔と、前記第1連通孔よりも開口面積が小さい第2連通孔とを有する側管用ポート部と、を備え、
前記コックは、
前記本体部の前記貫通孔に摺動回転可能に挿入され、前記液体が通過する第1流路溝と、第2流路溝とが設けられた円筒部と、
前記円筒部を回転操作するハンドル部と、を有し、
前記上流ポート部、前記側管用ポート部及び前記下流ポート部を連通させる基準位置に前記コックがある状態において、
前記第1流路溝は、前記上流ポート部と前記側管用ポート部における前記第1連通孔と連通し、前記第2流路溝は、前記側管用ポート部における前記第2連通孔と前記下流ポート部と連通する
医療用活栓。 - 前記第1流路溝は、
前記液体が流入する液体導入部と、
前記液体導入部から分岐する複数の連通部と、
分岐した前記複数の連通部が合流し、前記コックが基準位置にある状態において、前記第1連通孔に臨む液体導出部と、を有する
請求項1に記載の医療用活栓。 - 前記液体導出部には、前記複数の連通部が合流する箇所に突起が設けられている
請求項2に記載の医療用活栓。 - 前記第1連通孔には、前記コックが基準位置にある状態において、前記突起と対向する
箇所に仕切り壁が設けられている
請求項3に記載の医療用活栓。 - 前記液体導出部と前記第2流路溝は、接続溝によって連通しており、
前記接続溝は、前記第1連通孔の開口面積及び前記第2連通孔の開口面積よりも小さい開口面積を有する
請求項2〜4のいずれかに記載の医療用活栓。 - 前記円筒部は、前記コックを所定量回転させた際に、前記上流ポート部、前記側管用ポート部及び前記下流ポート部の開口を塞ぐ閉塞面を有し、
前記第1流路溝及び前記第2流路溝は、前記閉塞面を避けて形成される
請求項1〜5のいずれかに記載の医療用活栓。 - 前記第2流路溝は、液体が通過する複数の連通部を有する
請求項1〜6のいずれかに記載の医療用活栓。
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WO2015100135A2 (en) * | 2013-12-27 | 2015-07-02 | Np Medical Inc. | Multi-functional medical sampling port and method of using same |
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DE102015205517A1 (de) * | 2015-03-26 | 2016-09-29 | B. Braun Melsungen Ag | Medizinische Fluidsteuervorrichtung für ein medizinisches Fluidleitungssystem |
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