WO2001047578A9 - Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristics - Google Patents
Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristicsInfo
- Publication number
- WO2001047578A9 WO2001047578A9 PCT/US2000/042778 US0042778W WO0147578A9 WO 2001047578 A9 WO2001047578 A9 WO 2001047578A9 US 0042778 W US0042778 W US 0042778W WO 0147578 A9 WO0147578 A9 WO 0147578A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- expandable member
- balloon
- expandable
- catheter
- Prior art date
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
- A61F2/95—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
- 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
- A61F2002/9583—Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
Definitions
- the present invention relates to the field of percutaneous transluminal angioplasty generally, and more particularly to a stent delivery system for producing variable post-deployment stiffness characteristics in stents which have uniform pre- deployment radial stiffness.
- a stent delivery system for producing variable post-deployment stiffness characteristics in stents which have uniform pre- deployment radial stiffness.
- a guiding catheter is percutaneously introduced into the cardiovascular system of a patient through the femoral arteries by means of a conventional Seldinger technique and advanced within a patient's vascular system until the distal end of the guiding catheter is positioned at a point proximal to the lesion site.
- a guidewire and a dilatation catheter having a balloon on the distal end are introduced through the guiding catheter with the guidewire sliding within the dilatation catheter.
- the guidewire is first advanced out of the guiding catheter into the patient's vasculature and is directed across the arterial lesion.
- the dilatation catheter is subsequently advanced over the previously advanced guidewire until the dilatation balloon is properly positioned across the lesion.
- the expandable balloon is inflated to a predetermined size with a radiopaque liquid at relatively high pressures, usually in the range of about 6-12 atmospheres. Balloon expansion radially compresses the atherosclerotic plaque of the lesion against the inside of the artery wall and thereby dilates the lumen of the artery. The balloon is then deflated to a small profile so that the dilatation catheter may be withdrawn from the patient's vasculature and blood flow resumed through the dilated artery. As should be appreciated by those skilled in the art, while the above-described procedure is typical, it is not the only method used in angioplasty. Balloon angioplasty sometimes results in short or long term failure.
- stents implantable intravascular prostheses, commonly referred to as stents, have emerged as a means by which to achieve long term vessel patency. Stated simply, a stent functions as permanent scaffolding to structurally support the vessel wall and thereby maintain luminal patency. Stents are typically small tubular metallic structures.
- Such systems typically include a balloon catheter, a stent which is mounted on the balloon, and a delivery sheath which surrounds the stent-delivery catheter.
- Initial angioplastic dilation of the lesion produces a residual lumen large enough to accept the stent delivery system.
- the guiding catheter used to perform the initial dilation is typically left in place in the patient and reused during the stent implantation procedure.
- the stent-delivery catheter is routed through the guiding catheter to a position in which its distal end is disposed substantially coextensively with the distal end of the guiding catheter and immediately proximate of previously expanded lesion.
- the stent- carrying catheter is extended from the distal end of the guiding catheter until the stent spans the previously dilated lesion.
- the delivery sheath which is slidable relative to the delivery catheter, balloon and stent, is then withdrawn into the guiding catheter to expose the balloon and stent.
- the delivery catheter is then supplied with a pressurized fluid, which expands the balloon and associated stent to a desired diameter sufficient to exceed the elastic limit of the stent.
- the stent thus comes in contact with, and permanently supports, the wall of the vessel.
- the delivery catheter balloon is then deflated and the delivery catheter and guiding catheter are withdrawn, leaving the expanded stent supporting the vessel lumen.
- Prior art stent delivery systems have generally proven to be effective. However, in the treatment of certain vascular diseases, it is desirable to have a stent with reinforced end rings or regions of relatively high stiffness at one or both ends of the stent. Such a stent is required to successfully treat ostial vessel diseases such as in the renal vessels.
- the ostium of the renal vessels requires a stent with an end region which possesses relatively high resistence to radial compression. This is due to the close proximity of the aortic wall muscles which have a tendency to contract around the renal ostium and which may cause radial collapse of a dilated vessel implanted with a non-reinforced stent.
- Vessels such as the coronary sinus, ostial RCA, and ostial left main, and other vessels where the ostium is surrounded by tissue which produces high radial forces, may also be beneficially treated by a stent with a reinforced or high stiffness end region. Stents of this type are commonly referred to as variable stiffness stents. The present invention satisfies these and other needs.
- the present invention provides a stent delivery system that utilizes a conventional dilatation catheter, equipped with a novel polyurethane inflation balloon, in combination with any one of several types of commercially available stents.
- the system creates a stent which would otherwise have uniform radial stiffness in its expanded state into a stent having comparatively high stiffness end portions or reinforced rings in its expanded state.
- the catheter of the present invention includes an elongated body having proximal and distal ends and an inflation balloon disposed proximate to the distal end of the catheter.
- the catheter further includes a port in its proximal end and an inner lumen between the port and the balloon. The port is in fluid communication with the balloon and supplies high pressure radiopaque fluid to the interior cavity of the balloon for balloon inflation.
- the balloon of the present invention can be formed from polyurethane material which possess a high coefficient of friction when bearing against metallic materials.
- the balloon includes a cylindrical working portion with end portions of selected taper.
- the balloon is designed to have relatively high axial compliance in comparison to its radial compliance.
- Stents suitable for use with the delivery system of the present invention include all stents having a closed cellular structure in their expanded state.
- the stent delivery system of the present invention is used with a stent of sufficient length such that the ends of the stent overhang the tapered portions of the balloon when the stent is centered on the balloon.
- the stent delivery system of the present invention is able to utilize balloon axial growth under high pressure and the high frictional resistence of the selected polyurethane material to produce substantial longitudinal expansion over a center portion of the stent, while the overhanging ends of the stent experience minimal longitudinal expansion.
- the central portion and end portions of the stent experience the same degree of radial expansion by the end of the expansion process.
- the differential in the rate of longitudinal expansion produces comparatively low cell density in the expanded center portion of the stent and comparatively high cell density in the expanded end portions of the stent.
- the comparatively high cell density in the end portions corresponds to a comparatively higher degree of radial stiffness.
- FIG. 1 is a side view, partially in section, depicting one embodiment of the stent delivery system of the present invention.
- FIG. 1 A is a cross-sectional view taken along line 1 A- 1 A depicting the inner and outer tubular members of the catheter shown in FIG. 1.
- FIG. 2 is a cross-sectional view of one particular embodiment of a balloon made in accordance with the present invention.
- FIG. 2A is a partial cross-sectional view of one particular embodiment of a balloon made in accordance with the present invention.
- FIG. 3 is a partial sectional view of the distal end of the stent delivery system shown in FIG. 1 depicting the catheter balloon, in its folded configuration, with a stent mounted thereon.
- FIG. 4 is a partial sectional view of the distal end of the stent delivery system shown in FIG. 1 depicting the catheter balloon, inflated at low pressure, with a stent mounted thereon.
- FIG. 5 is a partial sectional view of the distal end of the stent delivery system shown in FIG. 1 depicting the catheter balloon, inflated at moderate pressure, with a stent mounted thereon.
- FIG. 6 is a partial sectional view of the distal end of the stent delivery system shown in FIG. 1 depicting the catheter balloon, inflated at maximum pressure, with a stent mounted thereon.
- the present invention has a novel construction of an inflation balloon designed to utilize the properties of selected polyurethane materials to produce a balloon with high axial compliance, moderate radial compliance, and high adherence to metallic substrates.
- Catheter balloons are usually classified in terms of radial compliance, with balloons typically being classified as having low, medium, or high compliance.
- Radial compliance refers to the increase in a balloon's diameter over the balloon's nominal diameter at low inflation pressure.
- Balloon compliance is primarily a function of balloon material.
- Catheter balloons are most commonly made from polyester, polyamide, and polyolefm materials. Balloons made from polyester materials typically exhibit low compliance. Low compliance balloons generally increase in diameter at the rate of .1 mm per atmosphere pressure.
- Balloons made from polyamide materials typically have medium compliance.
- Medium compliance balloons increase in diameter at the rate of about .2 -. 3 mm per atmosphere pressure.
- Balloons made from Polyolefm materials typically exhibit the highest degree of compliance.
- High compliance balloons increase in diameter at a rate of about .3 - 1.0 mm per atmosphere pressure.
- Polyester, polyamide, and polyolefin materials all exhibit a very low coefficient of friction, in the range of .30 to .40, when bearing against a metallic structure such as a stainless steel stent.
- balloons produced from the above mentioned materials are effective in producing radial expansion of a stent, they usually do not adhere very well to metallic stents and therefore merely slip underneath the stent as they grow axially during expansion. Thus, these materials have little or no effect on the post expansion length of metallic stents.
- balloons constructed of this material can be tailored to have medium radial compliance in the range of .3 mm diametrical growth per atmosphere pressure and relatively high axial compliance in the range of .4 mm longitudinal growth per atmosphere pressure.
- polyurethane materials have demonstrated strong surface adhesion to metal substrates.
- Polyurethane materials have demonstrated coefficients of friction in the range of about .4 to .7 in bearing against metallic substrates such as stainless steel.
- the ability of polyurethane materials to force a stent to grow axially may be used to advantage in forming a variable stiffness stent.
- a differential in the rate of axial growth of the stent may be created. More specifically, at low to medium inflation pressure the center portion of the stent which is in contact with the cylindrical working portion of the balloon grows axially as the balloon is expanded. Stent axial growth in the range of .4 mm per atmosphere pressure is achievable with Multilink type stents.
- the expanded cells of the center portion of the stent are more widely spaced than those of the end portions, which due to their position overhanging the tapered portions of the balloon, experience little or no axial growth and consequently have closer cell spacing at full expansion.
- the closer cell spacing at full expansion provides the end portions of the stent with a higher degree of radial stiffness in comparison to the radial stiffness of the center portion.
- Stents expanded with polyurethane balloons have an increased end stiffness of about 10% over the stiffness of the center portion of the stent.
- the catheters used in the present invention are most conveniently constructed as over-the-wire balloon catheters of conventional form for use in angioplasty, except that the balloon has an exterior working surface of high frictional resistance. However, it should be appreciated that the present invention may also be applied to fixed wire catheters, rapid exchange type catheters, and other non over-the-wire catheters.
- FIG. 1 illustrates a stent delivery system that embodies features of the invention.
- the delivery system comprises a catheter 10, which includes an expandable member, such as an inflatable balloon 30, and a stent 20 mounted on the balloon 30.
- the balloon catheter 10 includes an elongated outer tubular member 14 and an elongated inner tubular member 15 coaxially disposed within the outer tubular member 14.
- the inner tubular member 15 has an inner lumen 16 adapted to receive a guidewire 17.
- the inner tubular member 15 and the outer tubular member 14 define an annular lumen 18 which directs inflation fluid to the interior of the balloon 30.
- the inner tubular member 15 is equipped with radiopaque markers 19, which are positioned radially in line with ends of the mounted stent 20, to aid a vascular surgeon when placing the catheter 10 within a blood vessel.
- the dimensions of the intravascular catheter for use in the present invention will generally follow the dimensions of intravascular catheters used in angioplasty procedures in the same arterial location. For example, in angioplasty procedures involving the coronary arteries, catheters are typically about 150 cm long with an outer diameter of about 0.89 mm. Materials for and methods of manufacturing such catheters are well known to those skilled in the art.
- the balloon 30 has an elongated cylindrically shaped working portion 32. On opposing ends of the working portion 32 are the tapered portions 36 and 38.
- a shoulder 35 is defined by the junction between the working portion 32 and the tapered end portions 36 and 38.
- the skirts or waists 40 and 42 are provided respectively on the small diameter end of the tapered portions 36 and 38.
- the working portion 32 may be optionally equipped with a plurality of integrally formed ridges 34 which serve to form points of high frictional resistence between the balloon and a metallic stent, as shown in FIG 2.
- the same purpose may also be achieved by adding a pebble grain texture 31 to the working portion of the balloon 32, as shown in FIG 2A.
- the working portion 32 and the tapered portions 36 and 38 have essentially the same wall thickness.
- the tapered portions By keeping the wall thickness of the tapered portions essentially the same as that of the working portion, the tapered portions, when subjected to high pressure, will expand in-line with the working portion.
- the skirts 40 and 42 need not, and generally do not, have the same wall thickness as the working section 32 and the tapered sections 36 and 38.
- the distal skirt 40 of the balloon 30 is attached to the distal end of the inner tubular member 15 of the catheter 10.
- the proximal skirt 42 is attached to the outer tubular member 14.
- Suitable means for attaching the skirts 40 and 42 to the catheter 10 include heat welding, solvent welding, ultrasonic welding, and adhesive bonding.
- Several types of polyurethane are suitable for making the balloons for use in the present invention.
- the type of polyurethane chosen is dependant on the amount of axial elongation desired at the center portion of the stent and the desired maximum inflation pressure.
- the coefficient of friction of the polyurethane balloon is in part a function of the balloon hardness. Generally, polyurethanes with a surface hardness of about 75 durometer (Shore A) to about 80 durometer (Shore D) are preferred.
- the maximum inflation pressure of the balloon is function of the balloon's geometry, wall thickness, and of the material's tensile strength. Polyuethanes typically have an ultimate tensile strength within a range of about 4500 psi to about 9000 psi, which is sufficient for the production of high pressure balloons.
- Thermoplastic polyurethanes such as those synthesized from d-isocycinates, are particular well suited for making balloons for use in the present invention.
- a suitable commercially available polyurethane is PELLETHANE 2633-75D, which is sold by the DOW Chemical Corporation.
- the balloon of the present invention may be made using any conventional process, such as blow molding or extrusion.
- the actual dimensions of the balloon 30 will depend upon the particular dilation procedure for which the balloon and catheter are to be employed. In general, when the balloon is for angioplasty usage, the external diameter of the balloon will be of the order of about 1 mm to about 25 mm. The overall length of the inflated portion will be on the order of about 10 mm to about 150 mm.
- the walls of the balloon will have an average thickness of about .01 mm to about .2 mm depending in part on the pressures to which the balloon will be inflated.
- the dimensions and methods given above are exemplary only and are not to be construed as limiting.
- the stent employed with the device of the present invention should ideally be formed of a metallic material and have a closed cell structure in its expanded state.
- the stent delivery system of the present invention is used as follows. With reference to FIG. 3, in order to create high stiffness end portions, the stent 20 is selected such that the length of the stent is greater than that of the working section 32 of the balloon 30.
- the stent is then positioned on the folded balloon 30 such that the ends of the stent overhang the respective tapered portions 36 and 38 of the balloon.
- a stent may be positioned such that only one end overhangs a tapered portion of the balloon.
- the stent-bearing catheter 10 is then advanced through a body lumen to a lesion site by conventional medical techniques.
- a guiding catheter is first placed in the patient's vasculature and advanced through the body lumen to a point proximal of the lesion site.
- a guidewire 17 is then advanced through the guiding catheter and is advanced out of the guiding catheter across the lesion site to a point distal of the lesion.
- the catheter-stent assembly 10 is subsequently advanced over the guidewire until the stent 20 is positioned across the lesion site.
- the balloon 30 of the catheter 10 is then inflated, whereby the stent 20 begins to expand. Referring now to FIG.
- initial inflation of the balloon at low pressure corresponding to a range of 2-4 atmospheres, generates a small degree of radial and axial stent expansion.
- the stent forms a discrete center portion 22 which is substantially coextensive with the working portion of the balloon 32.
- the stent forms discrete proximal and distal tapered portions 26 and 24 respectively.
- the tapered portions 26 and 24 of the stent 20 substantially conform to the tapered portions 38 and 36 of the balloon 30. At this point only minimal expansion of the stent' s cellular structure has occurred.
- the balloon extends longitudinally. Consequently, due to the high frictional resistance between the balloon and the stent, the center portion of the stent 22 expands longitudinally essentially the same amount as the working portion 32 of the balloon 30. As shown in FIG. 5, the cell density 28 of the stent in the center portion 22 has decreased relative to the cell density 29 of the end portions 24 and 26 which have experienced minimal longitudinal expansion.
- the tapered end portions 36 and 38 of the balloon 30, expand fully with the working portion 32, whereby the end portions 26 and 24 of the stent 20 are fully expanded radially to the same diameter as the center section 22.
- the end portions 24 and 26 are deformed upwardly, a minimal amount of longitudinal expansion occurs.
- the end portions 24 and 26 of the stent have a cell density relatively higher than the center portion 22.
- the differential in axial expansion between the center section 22 and the end portions 24 and 26 of the stent 20 effectively forms a stent with high cell density and stiffness at the end portions 24 and 26.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU50765/01A AU5076501A (en) | 1999-12-15 | 2000-12-12 | Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristics |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/461,945 | 1999-12-15 | ||
US09/461,945 US6306162B1 (en) | 1999-12-15 | 1999-12-15 | Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristics |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2001047578A2 WO2001047578A2 (en) | 2001-07-05 |
WO2001047578A3 WO2001047578A3 (en) | 2002-04-18 |
WO2001047578A9 true WO2001047578A9 (en) | 2003-01-30 |
Family
ID=23834562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/042778 WO2001047578A2 (en) | 1999-12-15 | 2000-12-12 | Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristics |
Country Status (3)
Country | Link |
---|---|
US (1) | US6306162B1 (en) |
AU (1) | AU5076501A (en) |
WO (1) | WO2001047578A2 (en) |
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US20060216313A1 (en) * | 1999-08-10 | 2006-09-28 | Allergan, Inc. | Methods for treating a stricture with a botulinum toxin |
US6767544B2 (en) * | 2002-04-01 | 2004-07-27 | Allergan, Inc. | Methods for treating cardiovascular diseases with botulinum toxin |
US6447521B1 (en) * | 2000-09-15 | 2002-09-10 | Advanced Cardiovascular Systems, Inc. | Foamed inner member cover stent retention and method of use |
US20020095203A1 (en) * | 2001-01-18 | 2002-07-18 | Intra Therapeutics, Inc. | Catheter system with spacer member |
US6623491B2 (en) * | 2001-01-18 | 2003-09-23 | Ev3 Peripheral, Inc. | Stent delivery system with spacer member |
US7572270B2 (en) * | 2001-02-16 | 2009-08-11 | Cordis Corporation | Balloon catheter stent delivery system with ridges |
FR2824367B1 (en) * | 2001-05-04 | 2003-07-18 | Roulements Soc Nouvelle | ASSEMBLY COMPRISING AN INSTRUMENT BEARING AND A HOUSING ASSOCIATED BY A SLEEVE PIECE |
US7004963B2 (en) * | 2001-09-14 | 2006-02-28 | Scimed Life Systems, Inc. | Conformable balloons |
US20030236563A1 (en) * | 2002-06-20 | 2003-12-25 | Dan Fifer | Stent delivery catheter with retention bands |
US20040102832A1 (en) * | 2002-11-21 | 2004-05-27 | Doty David R. | Stent delivery and retention apparatus |
US8016869B2 (en) * | 2003-03-26 | 2011-09-13 | Biosensors International Group, Ltd. | Guidewire-less stent delivery methods |
US7771463B2 (en) | 2003-03-26 | 2010-08-10 | Ton Dai T | Twist-down implant delivery technologies |
ES2346059T3 (en) * | 2003-03-26 | 2010-10-08 | Biosensors International Group Ltd. | IMPLANT SUPPLY CATHETER WITH ELECTROLYTICALLY EROSIONABLE JOINTS. |
GB0309616D0 (en) | 2003-04-28 | 2003-06-04 | Angiomed Gmbh & Co | Loading and delivery of self-expanding stents |
US20050182474A1 (en) * | 2004-02-13 | 2005-08-18 | Medtronic Vascular, Inc. | Coated stent having protruding crowns and elongated struts |
US7806922B2 (en) * | 2004-12-31 | 2010-10-05 | Boston Scientific Scimed, Inc. | Sintered ring supported vascular graft |
US7857843B2 (en) | 2004-12-31 | 2010-12-28 | Boston Scientific Scimed, Inc. | Differentially expanded vascular graft |
US7524445B2 (en) * | 2004-12-31 | 2009-04-28 | Boston Scientific Scimed, Inc. | Method for making ePTFE and structure containing such ePTFE, such as a vascular graft |
US8080030B2 (en) * | 2005-01-21 | 2011-12-20 | University Of South Florida | Endoscopic sheath having a biomimetic retractor |
US8043323B2 (en) | 2006-10-18 | 2011-10-25 | Inspiremd Ltd. | In vivo filter assembly |
US10070977B2 (en) | 2005-05-24 | 2018-09-11 | Inspire M.D. Ltd | Stent apparatuses for treatment via body lumens and methods of use |
US8961586B2 (en) * | 2005-05-24 | 2015-02-24 | Inspiremd Ltd. | Bifurcated stent assemblies |
US20070100414A1 (en) | 2005-11-02 | 2007-05-03 | Cardiomind, Inc. | Indirect-release electrolytic implant delivery systems |
EP1962940B1 (en) * | 2005-12-23 | 2019-10-23 | C.R. Bard, Inc. | Balloon catheter with centralized vent hole |
US20070173924A1 (en) * | 2006-01-23 | 2007-07-26 | Daniel Gelbart | Axially-elongating stent and method of deployment |
US10137015B2 (en) * | 2006-10-18 | 2018-11-27 | Inspiremd Ltd. | Knitted stent jackets |
WO2008047368A2 (en) * | 2006-10-18 | 2008-04-24 | Inspiremd Ltd. | Filter assemblies |
US20100324664A1 (en) * | 2006-10-18 | 2010-12-23 | Asher Holzer | Bifurcated Stent Assemblies |
CN101578078B (en) | 2006-11-22 | 2013-01-02 | 印斯拜尔Md有限公司 | Optimized stent jacket |
US9067045B2 (en) * | 2008-07-25 | 2015-06-30 | Cook Medical Technologies Llc | Balloon catheter and method for making same |
GB0816965D0 (en) * | 2008-09-16 | 2008-10-22 | Angiomed Ag | Stent device adhesively bonded to a stent device pusher |
WO2010077676A1 (en) * | 2008-12-08 | 2010-07-08 | Elmaleh David R | Delivery system for intravascular device with netting |
GB0901496D0 (en) | 2009-01-29 | 2009-03-11 | Angiomed Ag | Delivery device for delivering a stent device |
GB0909319D0 (en) | 2009-05-29 | 2009-07-15 | Angiomed Ag | Transluminal delivery system |
US8657870B2 (en) | 2009-06-26 | 2014-02-25 | Biosensors International Group, Ltd. | Implant delivery apparatus and methods with electrolytic release |
WO2011034010A1 (en) * | 2009-09-16 | 2011-03-24 | テルモ株式会社 | Stent delivery system |
US20110230946A1 (en) * | 2010-03-16 | 2011-09-22 | Abbott Laboratories | Easy marker placement balloon mold |
US9233015B2 (en) | 2012-06-15 | 2016-01-12 | Trivascular, Inc. | Endovascular delivery system with an improved radiopaque marker scheme |
IN2015DN00517A (en) | 2012-10-01 | 2015-06-26 | Bard Inc C R | |
WO2014062713A1 (en) | 2012-10-15 | 2014-04-24 | Elmaleh David R | Material structures for intravascular device |
GB2525005B (en) | 2014-04-09 | 2016-03-09 | Cook Medical Technologies Llc | Delivery system for implantable medical device |
EP3324884A1 (en) * | 2015-07-19 | 2018-05-30 | Sanford Health | Bridging stent graft with combination balloon expandable and self-expandable stents and methods for use |
WO2018048693A1 (en) * | 2016-09-12 | 2018-03-15 | Elixir Medical Corporation | Stent delivery systems with shaped expansion balloons |
CN115252247A (en) * | 2022-07-26 | 2022-11-01 | 上海百心安生物技术股份有限公司 | Degradable stent system with wound patch |
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CA2079417C (en) | 1991-10-28 | 2003-01-07 | Lilip Lau | Expandable stents and method of making same |
US5989280A (en) * | 1993-10-22 | 1999-11-23 | Scimed Lifesystems, Inc | Stent delivery apparatus and method |
JP2703510B2 (en) | 1993-12-28 | 1998-01-26 | アドヴァンスド カーディオヴァスキュラー システムズ インコーポレーテッド | Expandable stent and method of manufacturing the same |
US5591197A (en) | 1995-03-14 | 1997-01-07 | Advanced Cardiovascular Systems, Inc. | Expandable stent forming projecting barbs and method for deploying |
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US6077273A (en) * | 1996-08-23 | 2000-06-20 | Scimed Life Systems, Inc. | Catheter support for stent delivery |
US5913871A (en) * | 1996-09-25 | 1999-06-22 | Medtronic, Inc. | Balloon modification for improved stent fixation and deployment |
NL1004162C2 (en) * | 1996-10-01 | 1998-04-02 | Cordis Europ | Balloon catheter for stent delivery. |
IT238354Y1 (en) * | 1997-09-12 | 2000-10-16 | Invatec Srl | DILATATION CATHETER FOR THE INTRODUCTION OF EXPANDABLE STENT |
-
1999
- 1999-12-15 US US09/461,945 patent/US6306162B1/en not_active Expired - Lifetime
-
2000
- 2000-12-12 WO PCT/US2000/042778 patent/WO2001047578A2/en active Application Filing
- 2000-12-12 AU AU50765/01A patent/AU5076501A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US6306162B1 (en) | 2001-10-23 |
AU5076501A (en) | 2001-07-09 |
WO2001047578A3 (en) | 2002-04-18 |
WO2001047578A2 (en) | 2001-07-05 |
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