JP6051255B2 - 低温切除システム及び方法 - Google Patents
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Description
感圧密閉部材は膨張可能な浮袋である。
また、安全バルブアセンブリが、弁体と排出流路との間に設けられた流量制限装置を有しており、加圧装置が、感圧密閉部材および排出流路の両方に流体連結されると、膨張可能な浮袋がバルーンよりも早い速度で膨張する。
最小の圧力径(hydraulic diameter)は、バルーン16の基端部42の領域にあるのが一般的である。図17Eに示すように、この径は、単に冷媒搬送チューブ22をこの領域を通すだけで最大にすることができる。内視鏡を通るために必要な長手方向の剛性を得るために、冷媒搬送チューブ22は、一般的に、ステンレス製ハイポチューブで構成されている。あるいは、搬送チューブはポリイミドなどの樹脂であってもよいし、金属支持ワイヤはカテーテルの全長を通るものであってもよい。硬質の冷媒搬送チューブ22もまた、バルーン16の長手方向の剛性を与えるものである。
Claims (3)
- 低温切除システムに使用可能なバルーンに用い、前記バルーンが内部を有し、膨張状態および収縮状態になる制御バルーン拡張アセンブリであって、
バルーン内部に連結可能な排出流路を形成する排出流路装置と、
安全バルブ、加圧装置および弁体を備えた安全バルブアセンブリと、を備え、
前記安全バルブは、前記排出流路に流体連結された入口および排出気体排気領域に流体連結された出口を有する隔室と、前記入口および前記出口の間に設けられた感圧密閉部材と、を有しており、前記感圧密閉部材は、当該感圧密閉部材に付与される圧力によって前記入口および前記出口の間を密閉し、
前記弁体は、前記加圧装置を前記感圧密閉部材及び前記排出流路に選択的に流体連結するとともに、前記加圧装置を前記感圧密閉部材及び前記排出流路から流体分離するように構成されており、
前記弁体が、前記加圧装置、前記感圧密閉部材および前記排出流路を互いに流体連結する第1状態と、
前記加圧装置、前記感圧密閉部材および前記排出流路を互いから流体分離する第2状態と、
前記加圧装置を前記排出流路に流体連結する第3状態と、
前記加圧装置を前記感圧密閉部材に流体連結する第4状態と、に配置可能な制御バルブを有する、制御バルーン拡張アセンブリ。 - 低温切除システムに使用可能なバルーンに用い、前記バルーンが内部を有し、膨張状態および収縮状態になる制御バルーン拡張アセンブリであって、
バルーン内部に連結可能な排出流路を形成する排出流路装置と、
安全バルブ、加圧装置および弁体を備えた安全バルブアセンブリと、を備え、
前記安全バルブは、前記排出流路に流体連結された入口および排出気体排気領域に流体連結された出口を有する隔室と、前記入口および前記出口の間に設けられた感圧密閉部材と、を有しており、前記感圧密閉部材は、当該感圧密閉部材に付与される圧力によって前記入口および前記出口の間を密閉し、
前記弁体は、前記加圧装置を前記感圧密閉部材及び前記排出流路に選択的に流体連結するとともに、前記加圧装置を前記感圧密閉部材及び前記排出流路から流体分離するように構成されており、
前記感圧密閉部材が膨張可能な浮袋である、制御バルーン拡張アセンブリ。 - 低温切除システムに使用可能なバルーンに用い、前記バルーンが内部を有し、膨張状態および収縮状態になる制御バルーン拡張アセンブリであって、
バルーン内部に連結可能な排出流路を形成する排出流路装置と、
安全バルブ、加圧装置および弁体を備えた安全バルブアセンブリと、を備え、
前記安全バルブは、前記排出流路に流体連結された入口および排出気体排気領域に流体連結された出口を有する隔室と、前記入口および前記出口の間に設けられた感圧密閉部材と、を有しており、前記感圧密閉部材は、当該感圧密閉部材に付与される圧力によって前記入口および前記出口の間を密閉し、
前記弁体は、前記加圧装置を前記感圧密閉部材及び前記排出流路に選択的に流体連結するとともに、前記加圧装置を前記感圧密閉部材及び前記排出流路から流体分離するように構成されており、
前記感圧密閉部材が膨張可能な浮袋であり、前記安全バルブアセンブリが、前記弁体と前記排出流路との間に設けられた流量制限装置を有しており、前記加圧装置が、前記感圧密閉部材および前記排出流路の両方に流体連結されると、前記膨張可能な浮袋が前記バルーンよりも早い速度で膨張する、制御バルーン拡張アセンブリ。
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US20160302841A1 (en) | 2016-10-20 |
CN102223848A (zh) | 2011-10-19 |
US9168081B2 (en) | 2015-10-27 |
EP2352451A1 (en) | 2011-08-10 |
JP2012509146A (ja) | 2012-04-19 |
JP5574448B2 (ja) | 2014-08-20 |
US20100130970A1 (en) | 2010-05-27 |
US20130197500A1 (en) | 2013-08-01 |
JP2014140772A (ja) | 2014-08-07 |
EP2352451A4 (en) | 2012-05-23 |
US11298174B2 (en) | 2022-04-12 |
US10383676B2 (en) | 2019-08-20 |
JP2015144871A (ja) | 2015-08-13 |
CN102223848B (zh) | 2014-05-21 |
US8382746B2 (en) | 2013-02-26 |
JP6231649B2 (ja) | 2017-11-15 |
EP2352451B1 (en) | 2014-01-08 |
WO2010059519A1 (en) | 2010-05-27 |
US20190328438A1 (en) | 2019-10-31 |
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