JPH0630905A - Stop cock for medical purpose - Google Patents

Stop cock for medical purpose

Info

Publication number
JPH0630905A
JPH0630905A JP4206284A JP20628492A JPH0630905A JP H0630905 A JPH0630905 A JP H0630905A JP 4206284 A JP4206284 A JP 4206284A JP 20628492 A JP20628492 A JP 20628492A JP H0630905 A JPH0630905 A JP H0630905A
Authority
JP
Japan
Prior art keywords
cock
blood pressure
stopcock
stop cock
state
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
Application number
JP4206284A
Other languages
Japanese (ja)
Inventor
Shigeru Nemoto
茂 根本
Kazuaki Mizoguchi
一昭 溝口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nemoto Kyorindo Co Ltd
Original Assignee
Nemoto Kyorindo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nemoto Kyorindo Co Ltd filed Critical Nemoto Kyorindo Co Ltd
Priority to JP4206284A priority Critical patent/JPH0630905A/en
Publication of JPH0630905A publication Critical patent/JPH0630905A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

PURPOSE:To release operators from the operation of frequently changing stop cocks over by dispensing with the stop cock for a blood pressure-monitoring line, by providing a one-way valve between the blood pressure-monitoring line and the stop cock therefor in a stop cock main body, which valve behaves in the state of opening or shutting, corresponding to negative pressure applied at the side of the stop cock main body. CONSTITUTION:A one-way valve 20 is provided between a blood pressure- monitoring line 11a and a monitoring cock 13 in a stop cock main body 1, and behaves so as to be in the state of opening until negative pressure applied at the side of the stop cock main body is at a weak pressure predetermined and to be in the state of shutting when the negative pressure reaches a strong pressure. In the one-way valve 20, a valve body is usually pulled by a spring and is not impulsively moved at the negative pressure of approximately 300m/mHg. Therefore, the one-way valve 20 is in the state of opening when blood pressure is monitored or when the monitoring line 11a is filled with a heparinized physiological saline solution. On the other hand, when a contrast medium is infused, infusion pressure is at 20,000m/mHg or more, and the valve body is lifted up and is in the state of shutting.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えばCoronar
y Angiography(冠動脈造影,以降、CA
Gと略す)などで使用する医療用活栓に関するものであ
る。
FIELD OF THE INVENTION The present invention relates to, for example, Coronar.
y Angiography (Coronary angiography, CA
The abbreviation "G") relates to a stopcock for medical use.

【0002】[0002]

【従来の技術】図3は、従来の3連3方活栓(3−Wa
y 3−Stop Cock)を説明するための図であ
り、図において、1aは活栓本体、2はロテーティング
・アダプタ(Rotating Adaptor)、3
はその先端が患者に接続された造影用カテーテル、4は
注入用シリンジ、11aは血圧モニタリングライン、1
1bはヘパリン添加生理食塩水充填ライン、11cは造
影剤充填ライン、12は圧力トランスデューサである。
2. Description of the Related Art FIG. 3 shows a conventional three-way three-way stopcock (3-Wa).
y 3 Stop Cock), in the figure, 1a is a stopcock main body, 2 is a rotating adapter (Rotating Adapter), 3
Is an imaging catheter whose tip is connected to the patient, 4 is an injection syringe, 11a is a blood pressure monitoring line, 1
Reference numeral 1b is a heparin-added physiological saline filling line, 11c is a contrast agent filling line, and 12 is a pressure transducer.

【0003】次に図3に示す3連3方活栓の動作につい
て説明する。図4〜図8はそれぞれ3連3方活栓の動作
を説明するための図であり、図において、10a〜10
cはそれぞれストップコックを示す。ストップコック1
0cを操作して図4の状態に位置させることで、造影剤
充填ライン11cと注入用シリンジ4との間が接続され
ると同時に造影用カテーテルへのルートを遮断して、シ
リンジ4へ造影剤の充填を行う。次にストップコック1
0cを図5に示すように戻すことで、造影用カテーテル
3とシリンジ4とが接続され、患者への造影剤の注入が
可能になる。なお、この造影剤の注入は、CAG検査中
において、造影用カテーテル3の先端を患者の冠動脈口
に導くためのテストショット(この場合は1cc〜3c
cの造影剤を注入する)と、本造影(この場合は5cc
〜7ccの造影剤を注入する)とで、数十回繰り返され
るが、その都度、医師等によってストップコック10c
の切り替え操作が繰り返されることになる。
Next, the operation of the three-way three-way stopcock shown in FIG. 3 will be described. FIGS. 4 to 8 are diagrams for explaining the operation of the three-way three-way stopcock, respectively.
c shows a stopcock, respectively. Stopcock 1
By operating 0c to position it in the state of FIG. 4, the contrast agent filling line 11c and the injection syringe 4 are connected, and at the same time, the route to the contrast catheter is blocked and the contrast agent is transferred to the syringe 4. Filling. Next stopcock 1
By returning 0c as shown in FIG. 5, the contrast catheter 3 and the syringe 4 are connected, and the contrast agent can be injected into the patient. The injection of the contrast agent is a test shot (1 cc to 3 c in this case) for guiding the tip of the contrasting catheter 3 to the coronary ostium of the patient during the CAG examination.
Injecting contrast agent of c) and main contrast (in this case, 5 cc)
It is repeated several tens of times by injecting a contrast agent of up to 7 cc).
The switching operation of is repeated.

【0004】次に、CAG検査中の血圧測定について説
明する。CAG検査中は、造影用カテーテル3の先端が
冠動脈口へ挿入されることによる冠血流の障害、および
造影剤注入による冠血流の希釈化から、患者がショック
を起こす場合があり、このためできるだけ連続した血圧
の測定が必要となる。そして、この血圧のモニタリング
は、ストップコック10aを操作して図6に示すように
血圧モニタリングライン11aとロテーティング・アダ
プタ2に接続された造影用カテーテル3とを接続し、造
影用カテーテル3を通じて得た心拍による血液の動き
を、血圧モニタリングライン11aに充填されたヘパリ
ン添加生理食塩水を介して(この充填については後述す
る)圧力トランスデューサ12に導き、電気信号に変換
し、血圧波形としてCAG検査中の患者の状態をモニタ
する。したがってCAG検査においては、図6に示すよ
うに血圧をモニタリングしながら、図5に示すようにそ
の都度コック10aを切り替え、血圧測定を遮断して上
述のテストショット及び本造影を行う。
Next, the blood pressure measurement during the CAG test will be described. During the CAG examination, the patient may be shocked due to the impaired coronary blood flow due to the tip of the contrast enhancement catheter 3 being inserted into the ostium of the coronary artery and the dilution of the coronary blood flow due to the injection of the contrast medium. It is necessary to measure blood pressure as continuously as possible. Then, this blood pressure monitoring is obtained through the contrast catheter 3 by operating the stop cock 10a to connect the blood pressure monitoring line 11a and the contrast catheter 3 connected to the rotating adapter 2 as shown in FIG. The movement of the blood due to the heartbeat is guided to the pressure transducer 12 through the heparin-added physiological saline filled in the blood pressure monitoring line 11a (this filling will be described later), converted into an electric signal, and a CAG test is performed as a blood pressure waveform. Monitor the patient's condition. Therefore, in the CAG test, while monitoring the blood pressure as shown in FIG. 6, the cock 10a is switched each time as shown in FIG. 5, the blood pressure measurement is interrupted, and the above-described test shot and main imaging are performed.

【0005】図7は、充填ライン11bを介して、ヘパ
リン添加生理食塩水を注入用シリンジ4へ充填する場合
のストップコックの位置を示す。すなわち、図7に示す
状態で注入用シリンジ4へヘパリン添加生理食塩水を充
填し、図8に示すようにストップ・コック10aを切り
替えて注入用シリンジ4を押圧することで、血圧モニタ
リングライン11aにヘパリン添加生理食塩水を充填
し、上述の血圧モニタリングを行う。なお、カテーテル
が長時間留置されるとカテーテル内に血栓が付着してく
るためフラッジングが必要となる。さらに、薬液を注入
した場合にもフラッシングが必要となり、適宜、ストッ
プコックを図7に示す状態から図5に示す状態へ切り替
え、造影用カテーテル3にヘパリン添加生理食塩水を流
し、カテーテルをフラッシングしている。
FIG. 7 shows the position of the stopcock when filling the injection syringe 4 with heparin-added physiological saline through the filling line 11b. That is, the injection syringe 4 is filled with heparin-added physiological saline in the state shown in FIG. 7, and the stop cock 10a is switched to press the injection syringe 4 as shown in FIG. The heparin-added physiological saline is filled and the above-mentioned blood pressure monitoring is performed. If the catheter is left indwelling for a long time, thrombus will adhere to the inside of the catheter, which requires flooding. Further, flushing is necessary even when the drug solution is injected, and the stopcock is appropriately switched from the state shown in FIG. 7 to the state shown in FIG. 5, and heparin-added physiological saline is flown through the imaging catheter 3 to flush the catheter. ing.

【0006】[0006]

【発明が解決しようとする課題】従来の医療用活栓は以
上のように構成され動作するので、血圧のモニタとテス
トショットを含めた造影剤の注入とを、ストップコック
の切り替えなしに行うことができず、術者の負担が大き
いという問題点があった。すなわち、テストショットを
含め何回も行わなければならない造影剤の注入におい
て、注入時と注入後とに、その都度ストップコック10
aを速やかに切り替えなければならず、この操作が術者
に過度の負担を与える。特に、患者が重症であればある
ほど頻繁な切り替えが必要となり、その負担が増大す
る。
Since the conventional medical stopcock is constructed and operates as described above, it is possible to monitor the blood pressure and inject the contrast agent including the test shot without switching the stopcock. There was a problem that it was not possible and the burden on the operator was heavy. That is, in injection of a contrast agent that must be performed many times including test shots, the stopcock 10 is injected each time after injection and after injection.
It is necessary to switch a rapidly, and this operation imposes an excessive burden on the operator. In particular, the more severe the patient, the more frequent switching is required, which increases the burden.

【0007】本発明は、かかる問題点を解決するために
なされたものであり、血圧モニタリングラインのストッ
プコックを不要とし、頻繁な切り替え操作から術者を開
放できる医療用活栓を提供することを目的としている。
The present invention has been made to solve the above problems, and an object of the present invention is to provide a stopcock for medical use that does not require a stopcock of a blood pressure monitoring line and can open the operator from frequent switching operations. I am trying.

【0008】[0008]

【課題を解決するための手段】本発明に係わる医療用活
栓は、血圧モニタリングラインと活栓本体の対応するコ
ックとの間に、活栓側から加えられる負圧が一定の低圧
までは開放状態を取り、活栓側から加えられる負圧が高
圧になると閉塞状態を取る一方弁を挿入したことを特徴
とする。
The stopcock for medical treatment according to the present invention takes an open state between the blood pressure monitoring line and the corresponding cock of the stopcock main body until the negative pressure applied from the stopcock side is a constant low pressure. It is characterized in that a one-way valve is inserted which takes a closed state when the negative pressure applied from the stopcock becomes high.

【0009】[0009]

【実施例】以下、本発明の一実施例を図面を用いて説明
する。図1は、本発明の一実施例を示す図で、従来の装
置の図3に相当する図であり、図3と同一符号は同一又
は相当部分を示し、1は本実施例における医療用活栓
(3−Way 2−StopCock)本体であり、血
圧モニタリングライン11aに対応するモニタリングコ
ック13側には、従来の装置のようなストップコック1
0aは省略した構成となっている。20は本実施例にお
ける一方弁で、血圧モニタリングライン11aと活栓本
体1のモニタリングコック13との間に挿入され、活栓
本体1側から加えられる負圧が予め定めた低圧までは開
放状態を取り、負圧が高圧になると閉塞状態を取るよう
に開閉動作する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of the present invention and is a view corresponding to FIG. 3 of a conventional device, the same reference numerals as those in FIG. 3 denote the same or corresponding parts, and 1 is a medical stopcock in this embodiment The (3-Way 2-StopCock) body is a stopcock 1 such as a conventional device on the side of the monitoring cock 13 corresponding to the blood pressure monitoring line 11a.
0a is omitted. Reference numeral 20 denotes a one-way valve in the present embodiment, which is inserted between the blood pressure monitoring line 11a and the monitoring cock 13 of the stopcock main body 1 and takes an open state until the negative pressure applied from the stopcock main body 1 side reaches a predetermined low pressure, When the negative pressure becomes high, it opens and closes so as to take a closed state.

【0010】図2は、図1に示す一方弁の構成および動
作を説明するための図であり、図において、21は弁
体、22はシール材としてのO−リング、23はスプリ
ング、24は弁体21が嵌合する上部嵌合部である。
FIG. 2 is a diagram for explaining the structure and operation of the one-way valve shown in FIG. 1, in which 21 is a valve body, 22 is an O-ring as a sealing material, 23 is a spring, and 24 is It is an upper fitting portion with which the valve body 21 is fitted.

【0011】次に、本発明の動作について説明する。本
発明では、負圧の相違により自動的に開閉する一方弁2
0を用いて、ストップコック10aの機能を自動的に行
わせる。すなわち、ヘパ生理食塩水の血圧モニタリング
ライン11aへの充填圧は約200m/m・Hgで済
み、血圧モニタリング中の測定圧は約300m/m・H
gで済むのに対し、造影剤注入圧は20,000m/m
・Hg以上を必要とする。従って、この負圧の相違によ
り自動的に開閉する一方弁20を用いることで、血圧を
モニタリングしながら、必要時に造影剤の注入を行い、
テストショットおよび本造影が可能となる。
Next, the operation of the present invention will be described. In the present invention, the one-way valve 2 that automatically opens and closes due to the difference in negative pressure
0 is used to automatically perform the function of the stopcock 10a. That is, the filling pressure of hepa saline to the blood pressure monitoring line 11a is about 200 m / m · Hg, and the measured pressure during blood pressure monitoring is about 300 m / m · H.
g, the contrast agent injection pressure is 20,000 m / m
・ Requires Hg or higher. Therefore, by using the one-way valve 20 that automatically opens and closes due to the difference in the negative pressure, the contrast agent is injected when necessary while monitoring the blood pressure,
A test shot and main imaging can be performed.

【0012】以上の動作を図2の一方弁で説明すれば、
図2(A)に示すように一方弁20は、通常、スプリン
グ21の引っ張り力によって弁体21が図面矢印の方向
(下方)へ引っ張られており、約300m/m・Hg程
度の負圧では弁体21が摺動しないように構成されてい
る。従って血圧モニタリング時(約300m/m・H
g)やモニタリングライン11aにヘパリン添加生理食
塩水を充填している時(約200m/m・Hg)には、
一方弁20は開放状態を取り、ストップコックを切り替
えなくても、図6,図8に示す動作を行うことができ
る。
The above operation will be described with reference to the one valve of FIG.
As shown in FIG. 2 (A), in the one-way valve 20, the valve body 21 is normally pulled in the direction of the arrow (downward) by the pulling force of the spring 21, and when the negative pressure is about 300 m / m · Hg. The valve body 21 is configured not to slide. Therefore, during blood pressure monitoring (approx. 300 m / m · H
g) or when the monitoring line 11a is filled with heparin-added physiological saline (about 200 m / m · Hg),
On the other hand, the valve 20 is in the open state, and the operation shown in FIGS. 6 and 8 can be performed without switching the stop cock.

【0013】一方、造影剤注入時においては、その注入
圧が20,000m/m・Hg以上となるため、スプリ
ング23の引っ張り力に抗って弁体21が図面上方へ持
ち上げられ、上部嵌合部24とO−リング22とが嵌合
し、このラインを閉鎖し、モニタリングライン11aへ
の造影剤の侵入を防ぐ。この状態を図2(B)に示す。
以上のように動作する一方弁20を挿入することで、本
発明の医療用活栓は、3−Wayでありながら、2−S
top Cockの活栓が得られる。なお、ヘパリン添
加生理食塩水および造影剤の注入用シリンジ4への充填
は、図4,図7に示す従来の装置と同様にストップコッ
クを切り替えて行えば良い。また、ヘパリン添加生理食
塩水をモニタリングライン11aへ充填する操作は、モ
ニタリングコック13がストップコックでないので、図
9に示すように、ロテーテイング・アダプタ2にキャッ
プ14を取り付けて行えば良い。
On the other hand, when the contrast medium is injected, the injection pressure becomes 20,000 m / m · Hg or more, so the valve body 21 is lifted upward in the drawing against the tensile force of the spring 23, and the upper fitting is performed. The part 24 and the O-ring 22 are fitted to each other to close this line and prevent the contrast agent from entering the monitoring line 11a. This state is shown in FIG.
By inserting the one-way valve 20 that operates as described above, the medical stopcock of the present invention is 2-Way while being 3-Way.
A stopcock stopcock is obtained. The heparin-added physiological saline and the contrast agent may be filled in the injection syringe 4 by switching the stopcocks as in the conventional device shown in FIGS. Further, the operation of filling the monitoring line 11a with the heparin-added physiological saline may be performed by attaching the cap 14 to the rotating adapter 2 as shown in FIG. 9 because the monitoring cock 13 is not a stop cock.

【0014】[0014]

【発明の効果】本発明は以上のように、血圧モニタリン
グラインのストップコックを不要とし、頻繁な切り替え
操作から術者を開放できるという効果がある。なお、ヘ
パリン添加生理食塩水および造影剤のシリンジへの充填
は、従来の装置と同様にストップコックを切り替えて行
うが、一番コックの切り替えを必要とする血圧モニタリ
ング/造影剤注入のコックの切り替えを全くフリーにで
き、CAG検査中に頻繁に行わなければならないストッ
プコックの操作から術者を開放でき、且つ、造影剤注入
時における血圧モニタリングの中断を最小限にとどめら
れる等の効果がある。
As described above, the present invention eliminates the need for a stopcock on the blood pressure monitoring line and has the effect of freeing the operator from frequent switching operations. The heparin-added physiological saline and the contrast medium are filled in the syringe by switching the stopcock as in the conventional device, but the blood pressure monitoring / contrast medium injection cock that requires the most cock switching is required. There is an effect that the operator can be completely freed, the operator can be freed from the operation of the stopcock that must be frequently performed during the CAG examination, and the interruption of blood pressure monitoring at the time of injecting the contrast agent can be minimized.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.

【図2】図1に示す一方弁の構成および動作を説明する
ための図である。
FIG. 2 is a diagram for explaining the configuration and operation of the one-way valve shown in FIG.

【図3】従来の3連3方活栓を説明するための図であ
る。
FIG. 3 is a view for explaining a conventional three-way three-way stopcock.

【図4】動作を説明するための図である。FIG. 4 is a diagram for explaining the operation.

【図5】動作を説明するための図である。FIG. 5 is a diagram for explaining the operation.

【図6】動作を説明するための図である。FIG. 6 is a diagram for explaining the operation.

【図7】動作を説明するための図である。FIG. 7 is a diagram for explaining the operation.

【図8】動作を説明するための図である。FIG. 8 is a diagram for explaining the operation.

【図9】動作を説明するための図である。FIG. 9 is a diagram for explaining the operation.

【符号の説明】[Explanation of symbols]

1 医療用活栓 2 ロテーティング・アダプタ 3 造影用カテーテル 4 注入用シリンジ 10b ストップコック 10c モニタリングコック 11a 血圧モニタリングライン 11b ヘパリン添加生理食塩水充填ライン 11c 造影剤充填ライン 12 圧力トランスデューサ 13 モニタリングコック 20 一方弁 21 弁体 22 O−リング 23 スプリング 24 上部嵌合部 1 Medical Stopcock 2 Rotating Adapter 3 Contrast Catheter 4 Injection Syringe 10b Stopcock 10c Monitoring Cock 11a Blood Pressure Monitoring Line 11b Heparin-added Saline Filling Line 11c Contrast Filling Line 12 Pressure Transducer 13 Monitoring Cock 20 One-way Valve 21 Valve body 22 O-ring 23 Spring 24 Upper fitting part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 Coronary Angiograp
hy(冠動脈造影)などに用いられ、一方の端が注入用
シリンジ(syringe)に接続され、他の一方の端
が造影用カテーテル(catheter)に接続された
ライン(line)を形成し、このラインの間に第1か
ら第3のコック(cock)を有する医療用活栓におい
て、 第1のコックを造影剤充填用のコックとする場合このコ
ックをストップコック(stop cock)とし、 第2のコックを生理食塩水充填用のコックとする場合こ
のコックをストップコックとし、 第3のコックを血圧モニタリングライン用のコックとす
る場合このコックと血圧モニタリングラインとの間に、
負圧が一定圧以下で開放状態を取り一定圧以上で閉塞状
態を取る一方弁を挿入して構成され、 血圧のモニタリングと造影剤の注入との相互の切り替え
を、ストップコックの切り替え操作無しに行うことを特
徴とする医療用活栓。
1. Coronary Angiograp
It is used for hy (coronary angiography) and the like, and one end is connected to an injection syringe (syringe) and the other end is connected to an imaging catheter (catheter) to form a line. In a medical stopcock having first to third cocks between, when the first cock is used as a contrast agent filling cock, this cock is referred to as a stop cock, and the second cock is When this cock is used as a saline filling cock, this cock is used as a stop cock, and when the third cock is used as a blood pressure monitoring line, between this cock and the blood pressure monitoring line,
It is configured by inserting a valve while keeping the open state when the negative pressure is below a certain pressure and the closed state when it is above a certain pressure, and switching between monitoring blood pressure and injecting contrast agent without switching the stopcock. A stopcock for medical use characterized by being performed.
JP4206284A 1992-07-10 1992-07-10 Stop cock for medical purpose Pending JPH0630905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4206284A JPH0630905A (en) 1992-07-10 1992-07-10 Stop cock for medical purpose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4206284A JPH0630905A (en) 1992-07-10 1992-07-10 Stop cock for medical purpose

Publications (1)

Publication Number Publication Date
JPH0630905A true JPH0630905A (en) 1994-02-08

Family

ID=16520766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4206284A Pending JPH0630905A (en) 1992-07-10 1992-07-10 Stop cock for medical purpose

Country Status (1)

Country Link
JP (1) JPH0630905A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000000768A1 (en) * 1998-06-29 2000-01-06 Sugan Co., Ltd. Channel switching apparatus
US7610936B2 (en) 2004-04-16 2009-11-03 Medrad, Inc. Flow based pressure isolation mechanism for a fluid delivery system
US7771383B2 (en) 2004-10-22 2010-08-10 Medegen, Inc. Fluid control device with valve and methods of use
JP2013006123A (en) * 2007-06-20 2013-01-10 Terumo Corp Multiway cock and liquid dose circuit
US8945051B2 (en) 2009-07-24 2015-02-03 Bayer Medical Care Inc. Multi-fluid medical injector system and methods of operation
JP2015526243A (en) * 2012-08-28 2015-09-10 オスプレイ メディカル インコーポレイテッド Device for coordinating vehicle delivery
US11607489B2 (en) 2017-05-26 2023-03-21 Bayer Healthcare Llc Injector state logic with hemodynamic monitoring

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6530907B1 (en) 1998-06-29 2003-03-11 Sugan Co., Ltd. Channel switching apparatus
WO2000000768A1 (en) * 1998-06-29 2000-01-06 Sugan Co., Ltd. Channel switching apparatus
US10137294B2 (en) 2001-10-18 2018-11-27 Bayer Healthcare Llc Flow based pressure isolation and fluid delivery system including flow based pressure isolation and flow initiating mechanism
US7610936B2 (en) 2004-04-16 2009-11-03 Medrad, Inc. Flow based pressure isolation mechanism for a fluid delivery system
US7771383B2 (en) 2004-10-22 2010-08-10 Medegen, Inc. Fluid control device with valve and methods of use
US9782576B2 (en) 2004-10-22 2017-10-10 Carefusion 303, Inc. Fluid control device with valve and methods of use
JP2013006123A (en) * 2007-06-20 2013-01-10 Terumo Corp Multiway cock and liquid dose circuit
US8945051B2 (en) 2009-07-24 2015-02-03 Bayer Medical Care Inc. Multi-fluid medical injector system and methods of operation
US9474857B2 (en) 2009-07-24 2016-10-25 Bayer Healthcare Llc Multi-fluid medical injector system and methods of operation
US10751465B2 (en) 2009-07-24 2020-08-25 Bayer Healthcare Llc Multi-fluid medical injector system and methods of operation
JP2015526243A (en) * 2012-08-28 2015-09-10 オスプレイ メディカル インコーポレイテッド Device for coordinating vehicle delivery
US10279104B2 (en) 2012-08-28 2019-05-07 Osprey Medical, Inc. Devices and methods for modulating medium delivery
US10335539B2 (en) 2012-08-28 2019-07-02 Osprey Medical, Inc. Devices and methods for modulating medium delivery
US11607489B2 (en) 2017-05-26 2023-03-21 Bayer Healthcare Llc Injector state logic with hemodynamic monitoring

Similar Documents

Publication Publication Date Title
JP4791692B2 (en) Low pressure measuring device in high pressure environment
US5002066A (en) Blood sampling apparatus
US7314452B2 (en) Self flushing luer activated blood sampling devices
US5895376A (en) Hemostasis valve, system and assembly
JP4423436B2 (en) Pressure transducer protection valve
US3675891A (en) Continuous catheter flushing apparatus
US4245636A (en) Continuous flushing apparatus
JP5178198B2 (en) Apparatus and method for intraperitoneal pressure monitoring
US4865583A (en) Combination blood sampling and intravenous infusion apparatus and method
US5195980A (en) Hemostatic valve
JP3830633B2 (en) Method for manufacturing self-healing seal for medical device
US4714461A (en) Catheter assembly with air purging feature
JP4293689B2 (en) Contrast medium injection device
US4457487A (en) Flushing device
CH615819A5 (en)
DE102005063411A1 (en) A blood vessel catheter and injection system for performing a blood pressure measurement of a patient
JP2009522008A (en) Syringe-operated valve and method for flushing a catheter
JP2010110648A (en) System for delivering hemostasis promoting material to blood vessel puncture site
JPWO2004016314A1 (en) Fluid control device
JPS61162956A (en) Leak balloon catheter
WO2001007103A1 (en) Catheter with check valve
JPH0630905A (en) Stop cock for medical purpose
JPH0385179A (en) Medical balloon catheter
JPH07100212A (en) Stopcock for medical treatment
DE102005050142B3 (en) Device for measuring the duration of injection