JP4605581B2 - バルーンカテーテル - Google Patents
バルーンカテーテル Download PDFInfo
- Publication number
- JP4605581B2 JP4605581B2 JP2004158549A JP2004158549A JP4605581B2 JP 4605581 B2 JP4605581 B2 JP 4605581B2 JP 2004158549 A JP2004158549 A JP 2004158549A JP 2004158549 A JP2004158549 A JP 2004158549A JP 4605581 B2 JP4605581 B2 JP 4605581B2
- Authority
- JP
- Japan
- Prior art keywords
- stent
- length
- lesion
- balloon catheter
- marker
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
- A61B5/6853—Catheters with a balloon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1076—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions inside body cavities, e.g. using catheters
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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
- A61M25/10—Balloon catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0097—Visible markings, e.g. indicia
-
- 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
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon
Description
(1)ガイドワイヤ・前拡張用バルーンカテーテル・ガイディングカテーテルを用いて、ガイドワイヤを案内として病変部にバルーンカテーテルを導く。
(2)ステント留置前に、対照血管径(病変部の(近位部血管径+遠位部血管径)×1/2)より、概ね同径の拡張径を有するバルーンカテーテルを用いて狭窄部に加圧拡張を行う。その際マーカー部を用いて、特に病変長とステント長との関係等を把握して、病変形態に最適なステントを確認する。その後、抜去する。
(3)そして、ステント付バルーンカテーテルを用いて加圧拡張し、留置させる。その後、減圧・収縮させてガイドワイヤ・ガイディングカテーテルともに、抜去する。尚、この間造影剤注入・血管内超音波(IVUS)等を用いて病変部の形態等を把握する。
(4)そして、ステント留置前にマーカー付バルーンカテーテルを用いて狭窄部の前拡張を行う。これは、ステント付バルーンカテーテルの通過性等を良くする為である。尚、前拡張用バルーンカテーテルは導入時の狭窄部通過性、又、病変長が長いとき、末梢側からの拡径の容易性等(血管径の細い末梢側から順次拡径する拡径容易性と屈曲病変部の通過性の向上)を考慮し、比較的バルーン部の有効長が短い構造(一般に15〜20粍)となっている。
このように、前拡張バルーンカテーテルのマーカー機能に二種類の計測単位機能を付与することにより、ステント長の単位が異なっていても病変部の個有事情に対応したステント長の確認及び測長計測が極めて容易となる。
・B 一般に一個のステントを用いて病変部全体をフルカバーすることが望ましいが、病変部が長いほど、抹消側の血管径は細くなっている為、かかる部位を同一拡径すると過大拡張となり、解離を発生させる。従って、複数個の留置となるが、ステント間の重なり部位等で再狭窄が始まり、特に、び慢性病変(20粍以上)に対しては、この傾向が著しく複数個の留置は高度の技術を必要とする。
・C 又、屈曲病変部については、ステント両端部で、脈動・血流により圧力を常に間欠的に受けている為、この部位で再狭窄が発生する。
・D そして、完全閉塞病変においては、病変は閉塞部位だけではなく近傍にも存在し、プラーク量が多く、かつ病変部が長いことが知られている。
・E このようなことから、血管内超音波(IVUS)等を用いて得られる情報(完全閉塞病変両端部の断端形態・プラーク位置・血栓形成位置等)に基づいてステント仕様を決定しているが、再狭窄の発生率は術後6ヶ月で30%の高率である。
・A 選択した薬剤溶出型ステント長の病変部対応の適否・選択が容易となる。即ち、粍・吋の測長ディメンション混在のステント長であっても、その適否、及び、変更の際の単位変換・置換が容易となる。
・B 一般に、薬剤溶出型ステントを用いる場合、病変部両端部を少し超えてプラークのないところまで留置して病変部全体をフルカバーするので、そのステント長は長くなり、又ステント長25粍以上の長尺であっても迅速留置可能とすることにより、薬剤溶出性能を低下させることがなく、薬剤溶出型ステントの装着性向上と、性能安定を図り、一段の普及促進ができる。
2 シャフト部
3 バルーン部
4 アウターシャフト部
L1 外外間隔
L2 内内間隔
M1・M2・M3 マーカー
P 病変部
Claims (1)
- 細長可撓性のシャフト部の先端部分にバルーン部を設けたバルーンカテーテルにおいて、
前記シャフト部の外周に、長さの異なる帯状の2個の放射線不透過性マーカーを設け、前記2個の放射線不透過性マーカーの内内間隔と外外間隔とを2種類の異なる長さ単位による測長メジャーとしたことを特徴とするバルーンカテーテル。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004158549A JP4605581B2 (ja) | 2004-05-28 | 2004-05-28 | バルーンカテーテル |
US11/137,324 US20050267508A1 (en) | 2004-05-28 | 2005-05-26 | Balloon catheter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004158549A JP4605581B2 (ja) | 2004-05-28 | 2004-05-28 | バルーンカテーテル |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005334384A JP2005334384A (ja) | 2005-12-08 |
JP4605581B2 true JP4605581B2 (ja) | 2011-01-05 |
Family
ID=35426395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004158549A Active JP4605581B2 (ja) | 2004-05-28 | 2004-05-28 | バルーンカテーテル |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050267508A1 (ja) |
JP (1) | JP4605581B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7780715B2 (en) | 2004-03-04 | 2010-08-24 | Y Med, Inc. | Vessel treatment devices |
US9050437B2 (en) * | 2004-03-04 | 2015-06-09 | YMED, Inc. | Positioning device for ostial lesions |
US8486025B2 (en) | 2006-05-11 | 2013-07-16 | Ronald J. Solar | Systems and methods for treating a vessel using focused force |
JP6103721B2 (ja) * | 2012-03-26 | 2017-03-29 | テルモ株式会社 | バルーンカテーテル |
EP3064249A3 (en) * | 2012-07-24 | 2016-09-14 | Clearstream Technologies Limited | Balloon catheter with enhanced locatability |
JPWO2021054189A1 (ja) | 2019-09-17 | 2021-03-25 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63212374A (ja) * | 1987-02-27 | 1988-09-05 | テルモ株式会社 | 拡張体付カテ−テル |
JPH10244006A (ja) * | 1996-08-07 | 1998-09-14 | Target Therapeutics Inc | 膨張性膜を備えた編組み強化注入カテーテル |
JP2002204832A (ja) * | 2001-01-10 | 2002-07-23 | Kawasumi Lab Inc | コイル状マーカー並びにカテーテル及びバルーンカテーテル |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4671291A (en) * | 1986-03-31 | 1987-06-09 | Siemens Medical Systems, Inc. | Angle encoding catheter |
US4748982A (en) * | 1987-01-06 | 1988-06-07 | Advanced Cardiovascular Systems, Inc. | Reinforced balloon dilatation catheter with slitted exchange sleeve and method |
US4793359A (en) * | 1987-04-24 | 1988-12-27 | Gv Medical, Inc. | Centering balloon structure for transluminal angioplasty catheter |
US5169386A (en) * | 1989-09-11 | 1992-12-08 | Bruce B. Becker | Method and catheter for dilatation of the lacrimal system |
US5209730A (en) * | 1989-12-19 | 1993-05-11 | Scimed Life Systems, Inc. | Method for placement of a balloon dilatation catheter across a stenosis and apparatus therefor |
US5324269A (en) * | 1991-09-19 | 1994-06-28 | Baxter International Inc. | Fully exchangeable dual lumen over-the-wire dilatation catheter with rip seam |
US5479938A (en) * | 1994-02-07 | 1996-01-02 | Cordis Corporation | Lumen diameter reference guidewire |
US6179811B1 (en) * | 1997-11-25 | 2001-01-30 | Medtronic, Inc. | Imbedded marker and flexible guide wire shaft |
US20040068190A1 (en) * | 2002-10-04 | 2004-04-08 | Cespedes Eduardo Ignacio | Imaging catheter with indicia and methods of use |
-
2004
- 2004-05-28 JP JP2004158549A patent/JP4605581B2/ja active Active
-
2005
- 2005-05-26 US US11/137,324 patent/US20050267508A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63212374A (ja) * | 1987-02-27 | 1988-09-05 | テルモ株式会社 | 拡張体付カテ−テル |
JPH10244006A (ja) * | 1996-08-07 | 1998-09-14 | Target Therapeutics Inc | 膨張性膜を備えた編組み強化注入カテーテル |
JP2002204832A (ja) * | 2001-01-10 | 2002-07-23 | Kawasumi Lab Inc | コイル状マーカー並びにカテーテル及びバルーンカテーテル |
Also Published As
Publication number | Publication date |
---|---|
US20050267508A1 (en) | 2005-12-01 |
JP2005334384A (ja) | 2005-12-08 |
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