WO1999013800A1 - Extenseur dont la surface de la section transversale est susceptible de modifications - Google Patents

Extenseur dont la surface de la section transversale est susceptible de modifications Download PDF

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Publication number
WO1999013800A1
WO1999013800A1 PCT/IL1998/000358 IL9800358W WO9913800A1 WO 1999013800 A1 WO1999013800 A1 WO 1999013800A1 IL 9800358 W IL9800358 W IL 9800358W WO 9913800 A1 WO9913800 A1 WO 9913800A1
Authority
WO
WIPO (PCT)
Prior art keywords
stent
loops
elongate members
along
longitudinal axis
Prior art date
Application number
PCT/IL1998/000358
Other languages
English (en)
Inventor
Benny Gaber
Original Assignee
Benny Gaber
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 Benny Gaber filed Critical Benny Gaber
Priority to AU85584/98A priority Critical patent/AU8558498A/en
Priority to KR1020007002658A priority patent/KR20010023950A/ko
Priority to EP98936649A priority patent/EP1014889A1/fr
Priority to JP2000511432A priority patent/JP2001516615A/ja
Priority to CA002303917A priority patent/CA2303917A1/fr
Publication of WO1999013800A1 publication Critical patent/WO1999013800A1/fr

Links

Classifications

    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/92—Stents in the form of a rolled-up sheet expanding after insertion into the vessel, e.g. with a spiral shape in cross-section
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0091—Three-dimensional shapes helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section

Definitions

  • Stents are well known tubular support structures inserted into body vessels, ducts, lumens and the like, in various medical procedures
  • stents may be inserted in strictures in the common bile duct, blood vessels, urethra and other organs
  • Stents are generally mounted on a delivery catheter which is inserted over a thin guidewire The catheter is introduced into the particular vessel and the stent is released from the catheter and fixed in a chosen location in the vessel.
  • Expandable stents are known in the art
  • a self-expanding stent for endoscopic and transhepatic applications marketed under the trademark WALLSTENT 5' by
  • expandable stents of the art are only expandable to a single, final diameter
  • the prior art does not show a stent which is selectively expandable/contractible throughout a range of diameters
  • the present invention seeks to provide an improved stent that is selectively expandable/contractible throughout a range of cross-sectional areas
  • the stent of the present invention is not only easily insertable. but also easily removable
  • a stent having a cross-sectional area, the stent being selectively and fixedly expandable throughout a range of cross-sectional areas
  • the stent is selectively and fixedly contractible throughout the range of cross-sectional areas
  • the stent preferably includes a plurality of loops, each of the loops including an arcuately formed wire with a first end and a second end, the first end being attached to a first elongate member and the second end being attached to a second elongate member, the first and the second elongate members being arranged to slide with respect to each other along a common longitudinal axis, wherein the loops are arranged in a row and spaced from each other along the longitudinal axis and wherein sliding of the first and the second elongate members with respect to each other changes a cross-sectional area of each of the loops
  • first and the second elongate members respectively include a longitudinal tenon and a longitudinal groove, the tenon sliding in the groove
  • At least one of the loops is at least partially wrapped by a covering.
  • the stent includes a pair of half-cylinders partially nested in each other along a common longitudinal axis, each half-cylinder including a plurality of pins spaced in a row generally parallel to the longitudinal axis, wherein each of the pins slidingly mates with a helical slot correspondingly formed in the other half-cylinder, such that moving the half-cylinders with respect to each other moves the pins in the slots in a screw-thread manner, thereby changing the amount of nesting of the half-cylinders in each other and changing a cross-sectional area of the stent BRIEF DESCRIPTION OF THE DRAWINGS
  • Fig 1 is a simplified pictorial illustration of a stent constructed and operative in accordance with a preferred embodiment of the present invention, and comprising a plurality of loops of wire attached to a pair of elongate members,
  • Fig 2 is a simplified pictorial illustration of the stent of Fig 1 with one elongate member slid along a longitudinal axis with respect to the other elongate member,
  • Figs 3 and 4 are simplified side view illustrations of connections of ends of each wire to the elongate members in accordance with two alternative preferred embodiments of the present invention
  • Figs 5 and 6 are simplified top view illustrations of the stent of Fig 1, corresponding respectively to Figs 1 and 2,
  • Figs 7 and 8 are simplified front view illustrations of the stent of Fig 1 , corresponding respectively to Figs 1 and 2
  • Fig 9A is a simplified pictorial illustration of a stent constructed and operative in accordance with another preferred embodiment of the present invention, and comprising a pair of half-cylinders partially nested in each other along a common longitudinal axis,
  • Fig 9B is a simplified pictorial illustration of another preferred embodiment of the stent of Fig 9 A wherein the half-cylinders form a single cylinder,
  • Figs 10 and 1 1 are simplified top view illustrations of the stent of Fig 9, respectively before and after moving the half-cylinders with respect to each other, and Figs 12 and 13 are simplified front view illustrations of the stent of Fig 9, corresponding respectively to Figs 10 and 1 1
  • Fig 1 illustrates a stent 10 constructed and operative in accordance with a preferred embodiment of the present invention
  • Stent 10 includes a plurality of loops 12 each loop 12 constructed of an arcuately formed wire 14 with a first end 16 and a second end 18
  • wire encompasses anv slender element having any cross- sectional shape, such as wire, rod, bar, cable, or the like
  • Wire 14 is typically made of any medically safe material and mav be flexible if desired
  • First end 16 is preferablv attached to a first elongate member 20 and second end 18 is preferably attached to a second elongate member 22
  • First and second elongate members 20 and 22 are arranged to slide with respect to each other along a common longitudinal axis 24
  • Loops 12 are arranged m a row and spaced from each other along axis 24 and in Fig 1 loops 12 have a generally circular cross-section
  • first and second ends 16 and 18 are flush with first and second elongate members 20 and 22
  • first and second ends 16 and 18 are not flush with first and second elongate members 20 and 22. It is seen that first and second elongate members 20 and 22 respectively comprise a longitudinal tenon 26 and a longitudinal groove 28, and tenon 26 slides in groove 28
  • First and second elongate members 20 and 22 are preferably selectively fixable with respect to each other along a range of positions along axis 24
  • First and second elongate members 20 and 22 may be provided with teeth 30 along axis 24
  • Teeth 30 may be selectively and fixably meshed with each other along a range of positions along axis 24.
  • At least two, and preferably all, of loops 12 may be connected by a connecting filament 32, such as a thread or any non-rigid wire.
  • a covering 34 is useful in preventing tissue from bulging between loops 12
  • at least one of the loops 12, designated by reference numeral 36 and shown in phantom lines Fig. 1, has a different cross- sectional area than another one of the loops 12
  • first and second elongate members 20 and 22 include grasping portions 38 and 40, respectively, at a proximal ends of each elongate member Elongate members 20 and 22 may be slid with respect to each other by grasping grasping portions 38 and 40 with any convenient tool Top and side views of the configuration of Fig. 1 are shown respectively in
  • Fig 2 illustrates changing the cross-sectional area of loops 12 of stent 10
  • Top and side views of the configuration of Fig 2 are shown respectively in Figs 6 and 8
  • loops 12 now have a smaller, generally elliptic cross-sectional shape
  • First and second elongate members 20 and 22 may be slid with respect to each other anv desired amount to obtain any desired cross-sectional size
  • First and second elongate members 20 and 22 are fixed in the desired position by the meshing, locking action of teeth 30 with each other It is appreciated that other mechanisms instead of teeth may be employed to fix the position of first and second elongate members 20 and 22 with respect
  • Stent 50 preferably includes a pair of half-cylinders 52 and 54 partially nested in each other along a common longitudinal axis 56
  • Each half-cylinder 52 and 54 includes a plurality of pins 58 spaced in a row generally parallel to axis 56
  • Each pin 58 slidingly mates with a helical slot 60 correspondingly formed in the other half-cylinder such that moving half-cylinders 52 and 54 with respect to each other moves pins 58 in slots 60 in a screw-thread manner, thereby changing the amount of nesting of half-cylinders 52 and 54 in each other
  • Fig 9B illustrates another preferred embodiment of stent 50 wherein half-cylinders 52 and 54 form a single cylinder 55
  • Figs 10 and 1 1 are simplified top view illustrations of stent 50, respectively before and after moving half-cylinders 52 and 54 with respect to each other
  • Figs 12 and 13 are simplified front view illustrations of stent 50, corresponding respectively to Figs 10 and 1 1
  • moving half-cylinders 52 and 54 with respect to each other changes the cross-sectional area of stent 50
  • slots 60 may have teeth 62 formed therein so that pins 58 may be fixed in the desired position in slots 60 by lockingly meshing with teeth 62
  • other mechanisms instead of teeth may be emploved to fix the position of pins 58 in slots 60
  • the present invention is not limited by what has been particularly shown and described hereinabove Rather the scope of the present invention includes both combinations and subcombinations of the features desc ⁇ bed hereinabove as well as modifications and variations thereof which would occur to a person of skill

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Prostheses (AREA)

Abstract

L'invention a trait à un extenseur (10,50) d'une certaine surface de section transversale pouvant, de manière sélective, se dilater ou se contracter, pour atteindre des dimensions de surface de section transversale correspondant à toute une plage de dimensions différentes de surface, et se maintenir dans cet état.
PCT/IL1998/000358 1997-09-15 1998-07-30 Extenseur dont la surface de la section transversale est susceptible de modifications WO1999013800A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU85584/98A AU8558498A (en) 1997-09-15 1998-07-30 Stent with changeable cross-sectional area
KR1020007002658A KR20010023950A (ko) 1997-09-15 1998-07-30 가변 횡단면적을 가지는 스텐트
EP98936649A EP1014889A1 (fr) 1997-09-15 1998-07-30 Extenseur dont la surface de la section transversale est susceptible de modifications
JP2000511432A JP2001516615A (ja) 1997-09-15 1998-07-30 可変断面積ステント
CA002303917A CA2303917A1 (fr) 1997-09-15 1998-07-30 Extenseur dont la surface de la section transversale est susceptible de modifications

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12177197A IL121771A0 (en) 1997-09-15 1997-09-15 Stent with changeable cross-sectional area
IL121771 1997-09-15

Publications (1)

Publication Number Publication Date
WO1999013800A1 true WO1999013800A1 (fr) 1999-03-25

Family

ID=11070635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1998/000358 WO1999013800A1 (fr) 1997-09-15 1998-07-30 Extenseur dont la surface de la section transversale est susceptible de modifications

Country Status (8)

Country Link
EP (1) EP1014889A1 (fr)
JP (1) JP2001516615A (fr)
KR (1) KR20010023950A (fr)
AU (1) AU8558498A (fr)
CA (1) CA2303917A1 (fr)
IL (1) IL121771A0 (fr)
PL (1) PL339250A1 (fr)
WO (1) WO1999013800A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001087180A2 (fr) * 2000-05-17 2001-11-22 Xtent Medical Inc Tuteur pouvant etre allonge et relache de maniere selective
JP2005501659A (ja) * 2001-09-12 2005-01-20 リトナー，ジェイソン エウスタキオ管ステント
US11039918B2 (en) 2008-07-21 2021-06-22 Edwards Lifesciences Cardiaq Llc Repositionable endoluminal support structure and its applications

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002377A1 (fr) * 1993-07-13 1995-01-26 Scimed Life Systems, Inc. Extenseur selectivement dilatable, retractable et amovible
WO1996014030A1 (fr) * 1994-11-07 1996-05-17 Scimed Life Systems, Inc. Prothese endovasculaire que l'on peut elargir en utilisant des elements coulissants
EP0737453A2 (fr) * 1990-05-18 1996-10-16 STACK, Richard S. Stent endovasculaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0737453A2 (fr) * 1990-05-18 1996-10-16 STACK, Richard S. Stent endovasculaire
WO1995002377A1 (fr) * 1993-07-13 1995-01-26 Scimed Life Systems, Inc. Extenseur selectivement dilatable, retractable et amovible
WO1996014030A1 (fr) * 1994-11-07 1996-05-17 Scimed Life Systems, Inc. Prothese endovasculaire que l'on peut elargir en utilisant des elements coulissants

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001087180A2 (fr) * 2000-05-17 2001-11-22 Xtent Medical Inc Tuteur pouvant etre allonge et relache de maniere selective
WO2001087180A3 (fr) * 2000-05-17 2002-06-27 Xtent Medical Inc Tuteur pouvant etre allonge et relache de maniere selective
EP1294308A2 (fr) * 2000-05-17 2003-03-26 Benny Gaber Tuteur pouvant etre allonge et relache de maniere selective
EP1294308A4 (fr) * 2000-05-17 2004-07-07 Xtent Medical Inc Tuteur pouvant etre allonge et relache de maniere selective
US7175653B2 (en) 2000-05-17 2007-02-13 Xtent Medical Inc. Selectively expandable and releasable stent
JP2005501659A (ja) * 2001-09-12 2005-01-20 リトナー，ジェイソン エウスタキオ管ステント
US11039918B2 (en) 2008-07-21 2021-06-22 Edwards Lifesciences Cardiaq Llc Repositionable endoluminal support structure and its applications
US11857414B2 (en) 2008-07-21 2024-01-02 Edwards Lifesciences Cardiaq Llc Repositionable endoluminal support structure and its applications

Also Published As

Publication number Publication date
PL339250A1 (en) 2000-12-04
IL121771A0 (en) 1998-02-22
KR20010023950A (ko) 2001-03-26
AU8558498A (en) 1999-04-05
EP1014889A1 (fr) 2000-07-05
CA2303917A1 (fr) 1999-03-25
JP2001516615A (ja) 2001-10-02

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