JP4951335B2 - 改善された患者の快適さおよびアフターケアのために構成された尿管ステント - Google Patents
改善された患者の快適さおよびアフターケアのために構成された尿管ステント Download PDFInfo
- Publication number
- JP4951335B2 JP4951335B2 JP2006501046A JP2006501046A JP4951335B2 JP 4951335 B2 JP4951335 B2 JP 4951335B2 JP 2006501046 A JP2006501046 A JP 2006501046A JP 2006501046 A JP2006501046 A JP 2006501046A JP 4951335 B2 JP4951335 B2 JP 4951335B2
- Authority
- JP
- Japan
- Prior art keywords
- stent
- section
- distal portion
- bladder
- ureteral
- 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.)
- Expired - Fee Related
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Classifications
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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
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
- A61B2017/00871—Material properties shape memory effect polymeric
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/048—Ureters
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
- A61M2210/1089—Urethra
Description
本発明は、一般に、ステントに関する;より具体的には、本発明は、尿管ステントに関する。
尿管とは、尿を腎臓から膀胱へと運ぶ、身体内の管状通路である。尿管の遮断は、水腎症(腎臓内の尿の堰き止めによって特徴付けられる状態であり、上尿管および腎臓の膨潤および炎症を生じる)を引き起こし得る。これは、腎不全および最終的な壊死をもたらし得る。尿管の遮断(尿管狭窄ともまた称される)は、先天性または後天性であり得る。後天性の遮断は、疾患、傷害、腎石、および腫瘍によって引き起こされ得る。先天性遮断と後天性遮断との両方が、一般に、医学的介入(例えば、尿管ステントの使用)を必要とする。
本発明は、従来の尿管ステントの使用に付随する刺激の種々の原因に取り組むように構成された尿管ステントを提供する。これらの刺激としては、例えば、膀胱粘膜との半剛性のステントの接触に起因する、膀胱の三角形領域における刺激、代表的な弛緩構成を越えた尿管膀胱接合部の領域の伸長によって引き起こされる、尿管膀胱接合部の刺激、内部に存在する半剛性ステントの一部分の存在に起因する、腎臓および/または腎盂における疼痛、ならびに膀胱の排泄の間の尿管の逆流に付随する横腹の疼痛が挙げられる。
本発明は、改善された患者の快適さおよびアフターケアのために構成された、尿管ステントを提供する。1つの実施形態において、このステントは、いくらか平坦化された、非円形の断面を有する遠位部分を有し、これによって、より可撓性であり、より剛性が低い自己整列管腔を、膀胱の感受性の三角形領域内に提供する。別の実施形態において、このステントは、腎臓の下方、または腎盂もしくはその下方でのステントの自己係留を可能にするための螺旋コイルの形状を有する、近位部分を特徴とする。さらに、1つの実施形態は、その長さに沿って不規則なコイル形状を有する部分を有するステントを包含し、このステントの、尿管の運動に合わせた自己調節を可能にする。本発明の他の実施形態は、上記特徴の種々の組み合わせを有するステントを包含する。
本発明は、特定の好ましい実施形態を参照して具体的に図示および記載されたが、形式および細部における種々の変化が、添付の特許請求の範囲によって規定されるような本発明の精神および範囲から逸脱することなく、本発明においてなされ得ることが、当業者によって理解されるべきである。
Claims (12)
- 組織の刺激を減少させるための尿管ステントであって、近位部分および遠位部分を有する、細長い、実質的に中空の本体を備え、該近位部分が、患者の腎盂またはその下方で尿管の上部の内側に配置されるように構成されており、そして該遠位部分が、該患者の膀胱の内側に配置されるために構成されており、該遠位部分の少なくとも第一の区域が、平坦化された断面を有する管腔を規定し、そして該遠位部分の少なくとも第二の区域が、該ステントの端部を該膀胱内に保持するための、実質的スパイラルの形状を形成し、該遠位部分の少なくとも一セクションが、尿管膀胱接合部内での自己整列のために構成され、該ステントの該遠位部分が複数の開口部を備えている、尿管ステント。
- 前記遠位部分の前記第一の区域が、尿管膀胱接合部と接触するために構成されている、前記ステントのセクションを備える、請求項1に記載のステント。
- 前記遠位部分の前記第一の区域が、実質的に楕円形の断面を有する管腔を規定する、請求項1に記載のステント。
- 前記遠位部分の前記第一の区域が、尿管膀胱接合部の断面の形状と実質的に類似の形状を有する断面の管腔を規定する、請求項1に記載のステント。
- 前記遠位部分の少なくとも一セクションが、膀胱の排泄に付随する圧力の付与の際に潰れることが可能である、請求項1に記載のステント。
- 前記中空の本体の前記遠位部分の少なくとも一セクションが、前記近位部分の少なくとも一セクションの壁厚より薄い壁厚を有する、請求項1に記載のステント。
- 前記近位部分が、実質的に円形の断面を有する管腔を規定する、請求項1に記載のステント。
- 前記本体が、ヒドロゲルコーティングを備える、請求項1に記載のステント。
- 前記本体が、形状記憶チュービングを備える、請求項1に記載のステント。
- 前記本体が、生分解性ポリマーを含有する、請求項1に記載のステント。
- 前記ステントの少なくとも一部分が、螺旋コイルの形状を含み、そして患者の動きに対して自己調節するように構成されている、請求項1に記載のステント。
- 前記ステントの少なくとも一部分が、不規則な螺旋コイルの形状を含み、そして患者の動きに対して自己調節するように構成されている、請求項1に記載のステント。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US10/348,715 US7044981B2 (en) | 2003-01-22 | 2003-01-22 | Ureteral stent configured for improved patient comfort and aftercare |
US10/348,715 | 2003-01-22 | ||
PCT/US2004/001427 WO2004064681A2 (en) | 2003-01-22 | 2004-01-21 | Ureteral stent configured for improved patient comfort and aftercare |
Publications (2)
Publication Number | Publication Date |
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JP2006516214A JP2006516214A (ja) | 2006-06-29 |
JP4951335B2 true JP4951335B2 (ja) | 2012-06-13 |
Family
ID=32712615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006501046A Expired - Fee Related JP4951335B2 (ja) | 2003-01-22 | 2004-01-21 | 改善された患者の快適さおよびアフターケアのために構成された尿管ステント |
Country Status (6)
Country | Link |
---|---|
US (1) | US7044981B2 (ja) |
EP (1) | EP1587444A2 (ja) |
JP (1) | JP4951335B2 (ja) |
AU (1) | AU2004206915B2 (ja) |
CA (1) | CA2512772A1 (ja) |
WO (1) | WO2004064681A2 (ja) |
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-
2003
- 2003-01-22 US US10/348,715 patent/US7044981B2/en not_active Expired - Lifetime
-
2004
- 2004-01-21 EP EP04704012A patent/EP1587444A2/en not_active Withdrawn
- 2004-01-21 WO PCT/US2004/001427 patent/WO2004064681A2/en active Application Filing
- 2004-01-21 CA CA002512772A patent/CA2512772A1/en not_active Abandoned
- 2004-01-21 JP JP2006501046A patent/JP4951335B2/ja not_active Expired - Fee Related
- 2004-01-21 AU AU2004206915A patent/AU2004206915B2/en not_active Ceased
Also Published As
Publication number | Publication date |
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EP1587444A2 (en) | 2005-10-26 |
US7044981B2 (en) | 2006-05-16 |
JP2006516214A (ja) | 2006-06-29 |
WO2004064681A2 (en) | 2004-08-05 |
CA2512772A1 (en) | 2004-08-05 |
AU2004206915A1 (en) | 2004-08-05 |
WO2004064681A3 (en) | 2005-02-17 |
US20040143209A1 (en) | 2004-07-22 |
AU2004206915B2 (en) | 2009-04-23 |
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