JPWO2011114902A1 - 内視鏡用カテーテル - Google Patents
内視鏡用カテーテル Download PDFInfo
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- JPWO2011114902A1 JPWO2011114902A1 JP2012505609A JP2012505609A JPWO2011114902A1 JP WO2011114902 A1 JPWO2011114902 A1 JP WO2011114902A1 JP 2012505609 A JP2012505609 A JP 2012505609A JP 2012505609 A JP2012505609 A JP 2012505609A JP WO2011114902 A1 JPWO2011114902 A1 JP WO2011114902A1
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- Prior art keywords
- catheter
- endoscope
- distal end
- suction
- holes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
-
- 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
- A61M1/77—Suction-irrigation systems
- A61M1/772—Suction-irrigation systems operating alternately
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- 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
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1861—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument inserted into a body lumen or cavity, e.g. a catheter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/002—Irrigation
- A61B2218/006—Irrigation for smoke evacuation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
- A61B2218/008—Aspiration for smoke evacuation
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- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
- A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
- A61N7/02—Localised ultrasound hyperthermia
- A61N7/022—Localised ultrasound hyperthermia intracavitary
Abstract
Description
3つのカテーテルを作製した。いずれもポリエーテルエーテルケトン(PEEK)製の遠位端部とステンレス(SUS)製の継手とPFA製の導管部/近位端部とからなる。遠位端の先端近傍は、外径2.5mm、壁厚0.25mmの円柱形状であり、遠位端の先端から長手方向20mmの範囲内に孔径0.4mmの孔を複数設けた。外周に沿って1周あたり6個の孔を4周設けたもの(4×6:24孔:実施例1)、外周に沿って1周あたり8個の孔を3周設けたもの(3×8:24孔)を作製した。3×8孔のカテーテルの1つは、1周あたり8個の孔が長手方向に直線状に並ぶように作製し(実施例2)、他の1つは、1周8あたり個の孔が隣り合う1周あたり8個の孔と1周毎に外周に沿って15°ずれるように作製した(実施例3)。
実施例1のカテーテルと従来の内視鏡との間で流量性能の比較を行った。一定の圧力(50kPa)でカテーテルの近位端または従来の内視鏡ジェットの給水口に500mLの生理食塩水を供給し、カテーテルの遠位端の先端近傍の孔または従来の内視鏡ジェットの吐出口から生理食塩水を吐出し、すべての生理食塩水を吐出するのに要した時間を比較した(吐出試験)。カテーテルの遠位端または従来の内視鏡の鉗子口(φ3.2mm)を500mLの生理食塩水に漬け、一定の圧力(−50kPa)でカテーテルの遠位端の先端近傍の孔または従来の内視鏡の鉗子口から生理食塩水を吸引し、すべての生理食塩水を吸引するのに要した時間を比較した(吸引試験)。吐出試験および吸引試験の結果をそれぞれ図3(A)および図3(B)に示す。
次いで、実施例1〜3のカテーテルの吐出試験および吸引試験において、吐出圧力と吐出流量との関係、および吸引圧力と吸引流量との関係を調べた。吐出試験は、一定の圧力でカテーテルの近位端に500mLの生理食塩水を供給し、カテーテルの遠位端の先端近傍の孔から生理食塩水を吐出し、種々の圧力における1分あたりの吐出流量(mL/min)を測定した。吸引試験は、カテーテルの遠位端を500mLの生理食塩水に漬け、一定の圧力でカテーテルの遠位端の先端近傍の孔から生理食塩水を吸引し、種々の圧力における1分あたりの吸引流量(mL/min)を測定した。吐出試験および吸引試験の結果をそれぞれ図4に示す。
従来の吸引器具では、吸引時に臓器の吸いだこや組織の誤吸引が見られるのに対して、実施例1〜3のカテーテルでは、臓器の吸いだこや組織の誤吸引は見られなかった。これらより、本発明のカテーテルは、従来の吸引器具に比べて安全性が高いといえる。
2 孔
11 カテーテル
12 孔
13 エネルギー素子
Claims (5)
- 遠位端の先端近傍に孔を備える内視鏡用カテーテルであって、該孔が、該カテーテルの内径よりも小さい直径を有し、複数存在する、カテーテル。
- 前記内視鏡が軟性内視鏡である、請求項1に記載のカテーテル。
- 前記先端近傍が円柱形状を有し、前記孔の数が該円柱形状の外周に沿って1周あたり3〜12個である、請求項1または2に記載のカテーテル。
- 前記先端近傍にエネルギー素子をさらに備える、請求項1から3のいずれかの項に記載のカテーテル。
- 前記エネルギー素子が、高周波、ラジオ波、マイクロ波、超音波およびレーザー光からなる群より選択される少なくとも1つを発する、請求項1から4のいずれかの項に記載のカテーテル。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012505609A JP5900965B2 (ja) | 2010-03-19 | 2011-03-03 | 内視鏡用カテーテル |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010064882 | 2010-03-19 | ||
JP2010064882 | 2010-03-19 | ||
JP2010199913 | 2010-09-07 | ||
JP2010199913 | 2010-09-07 | ||
JP2012505609A JP5900965B2 (ja) | 2010-03-19 | 2011-03-03 | 内視鏡用カテーテル |
PCT/JP2011/054971 WO2011114902A1 (ja) | 2010-03-19 | 2011-03-03 | 内視鏡用カテーテル |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2011114902A1 true JPWO2011114902A1 (ja) | 2013-06-27 |
JP5900965B2 JP5900965B2 (ja) | 2016-04-06 |
Family
ID=44649003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012505609A Active JP5900965B2 (ja) | 2010-03-19 | 2011-03-03 | 内視鏡用カテーテル |
Country Status (6)
Country | Link |
---|---|
US (2) | US20130006260A1 (ja) |
EP (1) | EP2548517A4 (ja) |
JP (1) | JP5900965B2 (ja) |
KR (1) | KR20130009807A (ja) |
CN (1) | CN102811669B (ja) |
WO (1) | WO2011114902A1 (ja) |
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CN201356648Y (zh) * | 2009-03-04 | 2009-12-09 | 微创医疗器械(上海)有限公司 | 盐水灌注射频消融导管 |
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2011
- 2011-03-03 JP JP2012505609A patent/JP5900965B2/ja active Active
- 2011-03-03 WO PCT/JP2011/054971 patent/WO2011114902A1/ja active Application Filing
- 2011-03-03 US US13/580,739 patent/US20130006260A1/en not_active Abandoned
- 2011-03-03 CN CN201180014707.2A patent/CN102811669B/zh not_active Expired - Fee Related
- 2011-03-03 EP EP11756091.2A patent/EP2548517A4/en not_active Withdrawn
- 2011-03-03 KR KR1020127027146A patent/KR20130009807A/ko active Search and Examination
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2014
- 2014-06-05 US US14/296,491 patent/US20140288487A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
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WO2011114902A1 (ja) | 2011-09-22 |
US20140288487A1 (en) | 2014-09-25 |
JP5900965B2 (ja) | 2016-04-06 |
KR20130009807A (ko) | 2013-01-23 |
EP2548517A1 (en) | 2013-01-23 |
EP2548517A4 (en) | 2013-09-25 |
US20130006260A1 (en) | 2013-01-03 |
CN102811669A (zh) | 2012-12-05 |
CN102811669B (zh) | 2016-01-06 |
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