WO1998029148A1 - Multilayer liquid absorption and deformation devices - Google Patents
Multilayer liquid absorption and deformation devices Download PDFInfo
- Publication number
- WO1998029148A1 WO1998029148A1 PCT/US1997/023870 US9723870W WO9829148A1 WO 1998029148 A1 WO1998029148 A1 WO 1998029148A1 US 9723870 W US9723870 W US 9723870W WO 9829148 A1 WO9829148 A1 WO 9829148A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- stent
- swellable
- liquid
- polymeric
- 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
- A61F2/82—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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
-
- 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
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/145—Hydrogels or hydrocolloids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/148—Materials at least partially resorbable by the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/16—Biologically active materials, e.g. therapeutic substances
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0061—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof swellable
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
Definitions
- This invention relates generally to multilayer liquid absorption and deformation devices. More particularly, it relates to such devices for medical purposes and most particularly it relates to self-expandable intraluminal vascular stents employing such devices wherein the liquid is water.
- the stents may be biodegradable or they may be capable of releasing therapeutic drugs or they may be capable of doing both simultaneously.
- Biodegradable and drug releasing stents and other medical devices are not new in the art as evidenced, for example, by the following patents: U.S. 5,306,250 to March et al. on April 26, 1994; U.S. 5,443,458 to Eury et al. on August 22, 1995; U.S. 5,443,495 to Buscemi et al. on August 22, 1995; U.S. 5,464,450 to Buscemi et al. on November 7, 1995; U.S. 5,500,013 to Buscemi et al. on March 19, 1996 and Japanese patent application J63-9715 8 A, published April 27, 1988.
- a bimetal comprises two metals bonded together that expand differently to undergo deflection.
- the best known bimetal may be the type consisting of two thin strips of metal having different thermal expansion coefficients bonded together. Deflection or bending of such a structure is in response to temperature change.
- Such bimetals in the form of a beam, helical or spiral structure have been commonly used in temperature sensing devices such as thermostats and thermometers.
- This invention on the other hand and in an analogous way combines two or more layers of material together in superimposed fashion in which at least two of the layers exhibit differential liquid absorbency.
- a two layer structure in which one layer is hydrophilic and the other layer is not or which is less hydrophilic than the one layer will, upon exposure to water, analogously undergo deflection or bending because the absorption of water by the hydrophilic layer causes swelling of the layer. Since it is superimposed upon the other layer, deflection or bending results in a way analogous to the deflection of bimetal structures already described.
- a beam-like structure may be used as a actuator or like to respond or signify the presence of water or some other absorbable liquid.
- the concept as will be described in further detail hereinbelow, may be used in a variety of medical applications although not limited thereto, including self- expanding stents.
- Figure 1 is a schematic showing the fabrication and formation of one embodiment of a basic device making use of the general concept of the invention.
- Figure 2 is a schematic showing of two alternate embodiments of the invention which may be put to two distinctly different uses.
- Figure 3 is a showing of a configuration of a self-expanding stent in a normal size, making use of the invention.
- Figure 4 is. a schematic showing of the use of one of the embodiments of Figure 2 as a self-expanding stent in a tubular/helical configuration loaded for deployment, in a deployed tubular/helical configuration and in an expanded tubular/helical configuration.
- Figure 5 is a showing of another stent embodiment.
- Figure 6 is a showing of another stent embodiment.
- the present invention may comprise at least two layers of material, one being a non-water absorbable material 10, the other being a water absorbable material 12.
- the two layers may be combined by superimposing and joining them together as shown generally at 14 to provide a two layer structure.
- both layers are of polymeric material, which is most preferred, they may be combined together by the application of a suitable adhesive, heat or a solvent.
- a suitable adhesive heat or a solvent.
- the water absorbing layer 12 swells upon absorbing water, deformation and/or bending occurs as seen at 18 due to the forces created in layer 12 upon swelling caused by the absorption of water.
- both layers 10 and 12 exhibit different absorptive capacities. Both layers may be hydrophilic so long as one layer is more hydrophilic than the other. One layer may be non-absorptive and the other absorptive to maximize results. Both layers will preferably be polymeric in nature although the non-absorbing layer may even be thin metal.
- the water absorptive layer may be of a material which is absorptive per se or, more preferably in certain applications described further hereinbelow, it may consist of any suitable polymeric material in a composite form including water- swellable particles of polymeric material as shown schematically in Figure 1.
- More than two layers may be utilized. These layers may be any combination of absorptive and non-absorptive or relatively less absorptive materials and may even include metallic and other non-polymeric layers depending on the strength desired and control over deformation which is desired or for other reasons. Table 1 below lists examples of polymeric materials which may be used as layer 10 or as the matrix polymer material in a composite layer 12 for holding water-swellable particles. TABLE 1
- Biodegradable materials for the two-layer membrane include: polylactic acid polyglycolic acid poly(lactide-co-glycolide) poly(glycolide-co-trimethylene carbonate) polydioxanone polycaprolactone poly(lactide-co-caprolactone) poly(glycolide-caprolactone) polyphosphate polyanhydride polyorthoester poly(amino acid) poly(hydroxyl butyrate)
- Table 2 lists examples of polymeric materials which may be used as water swellable particles in a composite layer 12. All of those materials happen to be biodegradable as well. However, water swellable materials which are not biodegradable may be used.
- Table 3 lists examples of water swellable polymeric material per se which may be used to form a water swellable layer 12 or in the alternative may be formed as particles and used in a composite layer 12 with another polymer material as the matrix.
- layer 12 is in a composite form, even non-absorbent materials such as the polymeric materials of Table 1 may be used as the matrix material.
- collagen and polyacrylate-co-starch are biodegradable. The rest are water soluble.
- Other water swellable materials known in the prior art may be used in or for layer 12.
- the hydrophilic polyurethanes and the like of U.S. 4,872,867; the water swellable plastic polymers of U.S. 5,163,952 its continuation 5,258,020 described in Examples 3, 7, 9, 10 and 11 and discussed in column 10 at lines 30-37 of those patents; the solid absorbents of U.S. 5,554,180 such as copolymers of cellulose and starch, agar and polymeric acids; the water swellable matrix materials of U.S. 4,460,642; the water swellable layers of U.S. 4,496,535 and 4,872,867 may be used.
- the first type of device 22-24 of Figure 2 may find use as a sealing device when placed around tubular conduits (not shown). In the presence of an absorbate, the device 22-24 will shrink around such a tubular conduit in a sealing relationship.
- a sealing device in a medical application such a device may be placed around a blood vessel or other body conduit which has been opened or otherwise requires patching and/or reinforcement on the exterior thereof.
- Such a device including a water absorbent will shrink by absorbing body fluids to tightly fit about the vessel or other body conduit.
- appropriate sizing relationships must be taken into account but these may be readily determined depending upon the particular materials selected and combined for the device, etc.
- the presently most preferred embodiment of the invention involves the application of the concept to stent devices.
- the device 26-28 shown in Figure 2 is such an embodiment and will function as a self-expanding stent for use on the inside of vessels and other body conduits. Again, consideration must be given to appropriate sizing for any given application of such a stent. However, such stents may be provided in any number of configurations and styles in addition to the configuration shown in Figures 2 and 3.
- a multi-layer structure according to the invention may be formed in a helical configuration of a normal predetermined size as shown generally at 30 in Figure 4. Since this is a stent, the absorbent layer 12 will be positioned to the inside.
- the stent may be loaded onto a suitable catheter (not shown) for delivery as is known in the art. To minimize its diameter during delivery, it may be tightly wound to a smaller delivery diameter as shown at 32 when loaded onto the delivery catheter and covered with a removable sheath as is known in the art.
- stent 32 Upon being positioned in the desired implantation location and exposed by removal of the sheath, stent 32 will first expand to its normal size 30 and will then, upon absorbing water in blood or other body fluid, self-expand to a predetermined enlarged and expanded size 34, the size depending on the inside diameter of the vessel in which it is to be used.
- biodegradable materials are included in Tables 1, 2 and 3 for example.
- Bilayer membranes one hydrophobic and one hydrophilic, were prepared for demonstrating the application of the concept to stent usage.
- Various thicknesses were prepared in this manner.
- Hydrophilic (water swellable) layers were prepared in composite form, using gelatin particles in a polymer matrix of PCL or PDS.
- the gelatin was powdered in a mortar and separated by sieve to a 270 mesh size.
- the polymer was melted on a hot plate.
- the gelatin particles were mixed into it in 10% and 20% amounts. Then the melt was cast onto a warmed glass plate to form a membrane.
- Various thicknesses were prepared.
- the membranes were superimposed together with tetrahydrofuran (THF) as a solvent adhesive or with heat used for adherence.
- Gelatin absorbs water at room temperature (RT) or lower and expands in volume to become a gel without significant dissolution. At higher temperatures (about 70-100°C) it will dissolve into water. In a stent application, with body temperature being about 37 °C, gelatin will absorb water and not dissolve appreciably.
- the two layers may make use of the same polymer when a composite layer form is utilized. However, different polymers for the two layers may also be used.
- the non-absorbing layer may be metallic in thin film form or in other forms.
- biodegradable or non- biodegradable materials may be used.
- the layers may be superimposed together with adhesive or by means of heat melting. One layer can be placed on the other layer as a coating.
- the expansion force of a bilayer formed as a coil or cylinder can be controlled by the thickness of the layers, the loading amount of water absorbent material included in a composite type layer, the capability or capacity of the particular material for water absorbance and its expanding volume, and the type of polymer and its molecular weight.
- Specific examples are comprised of a PCL layer superimposed on a PCL and gelatin composite layer.
- PCL membranes were formed in various thicknesses.
- PCL and gelatin composite layers were also formed in various thicknesses and gelatin loading.
- the two layers were combined by using a 1 % PCL solution in THF as adhesive which was coated on one side of each membrane. They were then placed together and held for one hour.
- a heat gun was used to warm the bilayer which was then rolled to form a closed cylinder having the configuration shown in Figure 3.
- Two interfitting glass tubes can be used to facilitate this procedure.
- PCL membrane 9.0 mm. wide strips
- Stents having the configuration shown in Figure 4 were made utilizing bilayer membranes 1.0 mm. wide and 44-55 mm. long of DY23 combination. The strips were helically wound around a glass tube and oven heated at 52 - 57° C for 15 minutes. After cooling the stent held the glass tube size and a fixed tubular/helical shape.
- the resultant bilayer was formed into a tubular/helical shape by cutting the membrane into 1.8 mm. wide strips and wrapping them onto 3.0-4.0 mm. diameter glass tubes which were inserted into larger tubes. These molds were placed in a 95° C oven for 15 minutes then cooled. These stents when placed in water expanded from 4.0 mm. to 5.6 mm. (OD).
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Surgery (AREA)
- Epidemiology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- External Artificial Organs (AREA)
- Laminated Bodies (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97953440A EP0956056B1 (en) | 1996-12-31 | 1997-12-29 | Multilayer liquid absorption and deformation devices |
AT97953440T ATE300965T1 (en) | 1996-12-31 | 1997-12-29 | MULTI-LAYER LIQUID RECEPTION AND DEFORMING DEVICES |
DE69733899T DE69733899T2 (en) | 1996-12-31 | 1997-12-29 | MULTILAYER LIQUID RECEIVING AND DEFORMING DEVICES |
CA002275303A CA2275303C (en) | 1996-12-31 | 1997-12-29 | Multilayer liquid absorption and deformation devices |
JP53020198A JP4194119B2 (en) | 1996-12-31 | 1997-12-29 | Apparatus for absorbing and deforming multilayer liquids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/775,741 US6117168A (en) | 1996-12-31 | 1996-12-31 | Multilayer liquid absorption and deformation devices |
US08/775,741 | 1996-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998029148A1 true WO1998029148A1 (en) | 1998-07-09 |
Family
ID=25105352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/023870 WO1998029148A1 (en) | 1996-12-31 | 1997-12-29 | Multilayer liquid absorption and deformation devices |
Country Status (7)
Country | Link |
---|---|
US (2) | US6117168A (en) |
EP (2) | EP0956056B1 (en) |
JP (1) | JP4194119B2 (en) |
AT (1) | ATE300965T1 (en) |
CA (1) | CA2275303C (en) |
DE (1) | DE69733899T2 (en) |
WO (1) | WO1998029148A1 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000018446A1 (en) * | 1998-09-25 | 2000-04-06 | Cathnet-Science S.A. | Multi-layered sleeve for intravascular expandable device |
WO2000018331A3 (en) * | 1998-09-29 | 2000-07-06 | Bard Inc C R | Drug delivery systems |
US6251079B1 (en) | 1998-09-30 | 2001-06-26 | C. R. Bard, Inc. | Transthoracic drug delivery device |
US6277082B1 (en) | 1999-07-22 | 2001-08-21 | C. R. Bard, Inc. | Ischemia detection system |
WO2002043799A1 (en) | 2000-11-30 | 2002-06-06 | Kabushikikaisha Igaki Iryo Sekkei | Stent for blood vessel and material for stent for blood vessel |
US6620170B1 (en) | 1999-04-26 | 2003-09-16 | C. R. Bard, Inc. | Devices and methods for treating ischemia by creating a fibrin plug |
US6629987B1 (en) | 1999-07-30 | 2003-10-07 | C. R. Bard, Inc. | Catheter positioning systems |
EP1381403A2 (en) * | 2001-03-21 | 2004-01-21 | Boston Scientific Limited | Controlling resorption of bioresorbable medical implant material |
US6719805B1 (en) | 1999-06-09 | 2004-04-13 | C. R. Bard, Inc. | Devices and methods for treating tissue |
WO2008112757A2 (en) * | 2007-03-12 | 2008-09-18 | Gil Vardi | Graft including super-absorbent materials |
GB2456270B (en) * | 2006-10-27 | 2010-09-01 | Niann-Tzyy Dai | Skin substitutes, preparation methods and uses thereof |
WO2012030673A3 (en) * | 2010-08-30 | 2012-04-19 | SinuSys Corporation | Devices for dilating a paranasal sinus opening and for treating sinusitis |
US9138569B2 (en) | 2012-02-29 | 2015-09-22 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9687263B2 (en) | 2013-05-30 | 2017-06-27 | SinuSys Corporation | Devices and methods for inserting a sinus dilator |
Families Citing this family (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6117168A (en) | 1996-12-31 | 2000-09-12 | Scimed Life Systems, Inc. | Multilayer liquid absorption and deformation devices |
WO1999026559A1 (en) * | 1997-11-25 | 1999-06-03 | Triad Vascular Systems, Inc. | Layered endovascular graft |
US6395019B2 (en) | 1998-02-09 | 2002-05-28 | Trivascular, Inc. | Endovascular graft |
US7169187B2 (en) * | 1999-12-22 | 2007-01-30 | Ethicon, Inc. | Biodegradable stent |
US6981987B2 (en) | 1999-12-22 | 2006-01-03 | Ethicon, Inc. | Removable stent for body lumens |
US6338739B1 (en) * | 1999-12-22 | 2002-01-15 | Ethicon, Inc. | Biodegradable stent |
US6494908B1 (en) | 1999-12-22 | 2002-12-17 | Ethicon, Inc. | Removable stent for body lumens |
US7635388B1 (en) * | 2000-05-04 | 2009-12-22 | Tyler Thomas D | Device and method for incremental correction of sight disorders and occular diseases |
WO2002005731A1 (en) * | 2000-07-18 | 2002-01-24 | Teitelbaum George P | Biocompatible, expansile material and stent |
US6709452B1 (en) * | 2000-08-21 | 2004-03-23 | Linvatec Biomaterial Oy | Biodegradable surgical implants |
US6944115B2 (en) * | 2000-09-29 | 2005-09-13 | General Electric Company | Colored data storage media |
US6641607B1 (en) | 2000-12-29 | 2003-11-04 | Advanced Cardiovascular Systems, Inc. | Double tube stent |
US8961541B2 (en) * | 2007-12-03 | 2015-02-24 | Cardio Vascular Technologies Inc. | Vascular closure devices, systems, and methods of use |
US8992567B1 (en) | 2001-04-24 | 2015-03-31 | Cardiovascular Technologies Inc. | Compressible, deformable, or deflectable tissue closure devices and method of manufacture |
US20080114394A1 (en) * | 2001-04-24 | 2008-05-15 | Houser Russell A | Arteriotomy Closure Devices and Techniques |
US20090143808A1 (en) * | 2001-04-24 | 2009-06-04 | Houser Russell A | Guided Tissue Cutting Device, Method of Use and Kits Therefor |
US6911038B2 (en) * | 2001-05-08 | 2005-06-28 | Scimed Life Systems, Inc. | Matched balloon to stent shortening |
ITTO20010465A1 (en) | 2001-05-18 | 2002-11-18 | Sorin Biomedica Cardio Spa | MODIFYING STRUCTURE ELEMENT FOR INSTALLATION DEVICES, RELATED INSTALLATION DEVICE AND CONSTRUCTION PROCEDURE. |
US6475589B1 (en) * | 2001-12-17 | 2002-11-05 | General Electric Company | Colored optical discs and methods for making the same |
US6606765B2 (en) * | 2001-12-21 | 2003-08-19 | Ben C. Edmondson | Coiled tie-down devices |
US20040143288A1 (en) * | 2002-08-27 | 2004-07-22 | Gary Searle | Mechanical occluding and dilation device for a vessel |
US7247986B2 (en) * | 2003-06-10 | 2007-07-24 | Samsung Sdi. Co., Ltd. | Organic electro luminescent display and method for fabricating the same |
AU2004246998A1 (en) * | 2003-06-16 | 2004-12-23 | Nanyang Technological University | Polymeric stent and method of manufacture |
JP2007521041A (en) * | 2003-09-02 | 2007-08-02 | ユニバーシティ・オブ・フロリダ | Polymerizable reconstrainable, repositionable and removable percutaneous endovascular stent graft |
GB0322145D0 (en) * | 2003-09-22 | 2003-10-22 | Howmedica Internat S De R L | Apparatus for use in the regeneration of structured human tissue |
US8999364B2 (en) | 2004-06-15 | 2015-04-07 | Nanyang Technological University | Implantable article, method of forming same and method for reducing thrombogenicity |
US8083805B2 (en) * | 2005-08-16 | 2011-12-27 | Poly-Med, Inc. | Absorbable endo-urological devices and applications therefor |
US7833263B2 (en) * | 2005-04-01 | 2010-11-16 | Boston Scientific Scimed, Inc. | Hybrid vascular graft reinforcement |
US9101505B2 (en) | 2006-04-27 | 2015-08-11 | Brs Holdings, Llc | Composite stent |
US9155646B2 (en) | 2006-04-27 | 2015-10-13 | Brs Holdings, Llc | Composite stent with bioremovable ceramic flakes |
US7867283B2 (en) * | 2006-05-30 | 2011-01-11 | Boston Scientific Scimed, Inc. | Anti-obesity diverter structure |
GB0616738D0 (en) * | 2006-08-23 | 2006-10-04 | Evexar Medical Ltd | Improvements in and relating to medical devices |
US8513144B2 (en) * | 2007-06-15 | 2013-08-20 | Honeywell International Inc | Property films from renewable polymers |
US8066755B2 (en) | 2007-09-26 | 2011-11-29 | Trivascular, Inc. | System and method of pivoted stent deployment |
US8226701B2 (en) | 2007-09-26 | 2012-07-24 | Trivascular, Inc. | Stent and delivery system for deployment thereof |
US8663309B2 (en) | 2007-09-26 | 2014-03-04 | Trivascular, Inc. | Asymmetric stent apparatus and method |
CN101917929A (en) | 2007-10-04 | 2010-12-15 | 特里瓦斯库拉尔公司 | Modular vascular graft for low profile percutaneous delivery |
EP2217152A1 (en) * | 2007-10-17 | 2010-08-18 | Syntach AG | Shape-changing medical device, kit, method of production and method of use |
US8328861B2 (en) | 2007-11-16 | 2012-12-11 | Trivascular, Inc. | Delivery system and method for bifurcated graft |
US8083789B2 (en) | 2007-11-16 | 2011-12-27 | Trivascular, Inc. | Securement assembly and method for expandable endovascular device |
JP5224841B2 (en) * | 2008-02-08 | 2013-07-03 | グンゼ株式会社 | Biological duct stent |
US20090286090A1 (en) * | 2008-05-19 | 2009-11-19 | Ting Yuan-Ping R | Enhance performance on current renewable film using functional polymer coatings |
US10898620B2 (en) | 2008-06-20 | 2021-01-26 | Razmodics Llc | Composite stent having multi-axial flexibility and method of manufacture thereof |
US8206635B2 (en) | 2008-06-20 | 2012-06-26 | Amaranth Medical Pte. | Stent fabrication via tubular casting processes |
US8206636B2 (en) | 2008-06-20 | 2012-06-26 | Amaranth Medical Pte. | Stent fabrication via tubular casting processes |
EP2349080B1 (en) * | 2008-10-22 | 2016-04-13 | Boston Scientific Scimed, Inc. | Shape memory tubular stent with grooves |
NZ595417A (en) | 2009-04-09 | 2013-10-25 | Cardivascular Systems | Tissue closure devices, device and systems for delivery, kits and methods therefor |
FR2988585B1 (en) * | 2012-03-28 | 2015-04-03 | Cousin Biotech | VISCERAL PLAQUE FOR COELIOSCOPY |
US8992595B2 (en) | 2012-04-04 | 2015-03-31 | Trivascular, Inc. | Durable stent graft with tapered struts and stable delivery methods and devices |
US9498363B2 (en) | 2012-04-06 | 2016-11-22 | Trivascular, Inc. | Delivery catheter for endovascular device |
US9211374B2 (en) * | 2012-05-25 | 2015-12-15 | Robert F. Wallace | Therapeutic implantable device |
US10709585B2 (en) * | 2016-09-15 | 2020-07-14 | Michael R. Spearman | Degradeable nasal ostial stent |
WO2018181179A1 (en) | 2017-03-30 | 2018-10-04 | テルモ株式会社 | Medical instrument with hydrophilic member and hydrophobic member laminated |
CN111150888B (en) | 2018-11-07 | 2022-03-15 | 财团法人工业技术研究院 | Double-effect film and preparation method thereof |
WO2021234518A1 (en) * | 2020-05-18 | 2021-11-25 | Boston Scientific Limited | Medical treatment device and related methods thereof |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993010827A1 (en) * | 1991-11-29 | 1993-06-10 | William Cook Europe A/S | A process for hydrophilic coating of metal surfaces |
US5234456A (en) * | 1990-02-08 | 1993-08-10 | Pfizer Hospital Products Group, Inc. | Hydrophilic stent |
EP0604022A1 (en) * | 1992-12-22 | 1994-06-29 | Advanced Cardiovascular Systems, Inc. | Multilayered biodegradable stent and method for its manufacture |
WO1994016747A1 (en) * | 1993-01-21 | 1994-08-04 | Coloplast A/S | A method for producing a hydrophilic coating on a surface and a medical article produced by the method |
WO1995010989A1 (en) * | 1993-10-19 | 1995-04-27 | Scimed Life Systems, Inc. | Intravascular stent pump |
US5443458A (en) * | 1992-12-22 | 1995-08-22 | Advanced Cardiovascular Systems, Inc. | Multilayered biodegradable stent and method of manufacture |
WO1995029647A2 (en) * | 1994-04-29 | 1995-11-09 | Scimed Life Systems, Inc. | Stent with collagen |
WO1996025897A2 (en) * | 1995-02-22 | 1996-08-29 | Menlo Care, Inc. | Covered expanding mesh stent |
US5554180A (en) * | 1995-07-07 | 1996-09-10 | Aeroquip Corporation | Intraluminal stenting graft |
US5599291A (en) * | 1993-01-04 | 1997-02-04 | Menlo Care, Inc. | Softening expanding ureteral stent |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496535A (en) * | 1980-11-12 | 1985-01-29 | Tyndale Plains-Hunter, Ltd. | Polyurethane polyene compositions |
US4387413A (en) * | 1980-12-24 | 1983-06-07 | Rca Corporation | Semiconductor apparatus with integral heat sink tab |
US4460642A (en) * | 1981-06-26 | 1984-07-17 | Minnesota Mining And Manufacturing Company | Water-swellable composite sheet of microfibers of PTFE and hydrophilic absorptive particles |
US4445105A (en) * | 1982-06-28 | 1984-04-24 | Portage Electric Products, Inc. | Thermostat |
WO1986007541A1 (en) * | 1985-06-19 | 1986-12-31 | Yasushi Zyo | Composition which can impart antithrombotic ability and medical apparatus to be in contact with blood |
JPS6397158A (en) * | 1986-10-15 | 1988-04-27 | 宇部興産株式会社 | Artificial blood vessel |
US4814131A (en) * | 1987-07-02 | 1989-03-21 | Atlas Sheldon M | Process for producing a shaped article, such as fiber composed of a hydrophobic polymer and a hydrophilic polymer |
US4994047A (en) * | 1988-05-06 | 1991-02-19 | Menlo Care, Inc. | Multi-layer cannula structure |
DE69002295T2 (en) * | 1989-09-25 | 1993-11-04 | Schneider Usa Inc | MULTILAYER EXTRUSION AS A METHOD FOR PRODUCING BALLOONS FOR VESSEL PLASTICS. |
GB8927282D0 (en) * | 1989-12-01 | 1990-01-31 | Univ Strathclyde | Vascular surgical devices |
US5236447A (en) * | 1990-06-29 | 1993-08-17 | Nissho Corporation | Artificial tubular organ |
US5102401A (en) * | 1990-08-22 | 1992-04-07 | Becton, Dickinson And Company | Expandable catheter having hydrophobic surface |
US5163952A (en) * | 1990-09-14 | 1992-11-17 | Michael Froix | Expandable polymeric stent with memory and delivery apparatus and method |
US5258020A (en) * | 1990-09-14 | 1993-11-02 | Michael Froix | Method of using expandable polymeric stent with memory |
US5632776A (en) * | 1990-11-22 | 1997-05-27 | Toray Industries, Inc. | Implantation materials |
US5356423A (en) * | 1991-01-04 | 1994-10-18 | American Medical Systems, Inc. | Resectable self-expanding stent |
US5500013A (en) * | 1991-10-04 | 1996-03-19 | Scimed Life Systems, Inc. | Biodegradable drug delivery vascular stent |
US5464450A (en) * | 1991-10-04 | 1995-11-07 | Scimed Lifesystems Inc. | Biodegradable drug delivery vascular stent |
US5258042A (en) * | 1991-12-16 | 1993-11-02 | Henry Ford Health System | Intravascular hydrogel implant |
US5306250A (en) * | 1992-04-02 | 1994-04-26 | Indiana University Foundation | Method and apparatus for intravascular drug delivery |
CZ281454B6 (en) * | 1992-11-23 | 1996-10-16 | Milan Mudr. Csc. Krajíček | Aid for non-surgical closing of a hole in a vessel wall |
NL9300500A (en) * | 1993-03-22 | 1994-10-17 | Industrial Res Bv | Expandable hollow sleeve for locally supporting and / or strengthening a body vessel, as well as a method for manufacturing it. |
US5443495A (en) * | 1993-09-17 | 1995-08-22 | Scimed Lifesystems Inc. | Polymerization angioplasty balloon implant device |
US5389106A (en) * | 1993-10-29 | 1995-02-14 | Numed, Inc. | Impermeable expandable intravascular stent |
US6117168A (en) | 1996-12-31 | 2000-09-12 | Scimed Life Systems, Inc. | Multilayer liquid absorption and deformation devices |
-
1996
- 1996-12-31 US US08/775,741 patent/US6117168A/en not_active Expired - Lifetime
-
1997
- 1997-12-29 JP JP53020198A patent/JP4194119B2/en not_active Expired - Fee Related
- 1997-12-29 EP EP97953440A patent/EP0956056B1/en not_active Expired - Lifetime
- 1997-12-29 CA CA002275303A patent/CA2275303C/en not_active Expired - Fee Related
- 1997-12-29 AT AT97953440T patent/ATE300965T1/en not_active IP Right Cessation
- 1997-12-29 DE DE69733899T patent/DE69733899T2/en not_active Expired - Lifetime
- 1997-12-29 EP EP05014350A patent/EP1634609A3/en not_active Withdrawn
- 1997-12-29 WO PCT/US1997/023870 patent/WO1998029148A1/en active IP Right Grant
-
2000
- 2000-06-30 US US09/609,584 patent/US6517575B1/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5234456A (en) * | 1990-02-08 | 1993-08-10 | Pfizer Hospital Products Group, Inc. | Hydrophilic stent |
WO1993010827A1 (en) * | 1991-11-29 | 1993-06-10 | William Cook Europe A/S | A process for hydrophilic coating of metal surfaces |
EP0604022A1 (en) * | 1992-12-22 | 1994-06-29 | Advanced Cardiovascular Systems, Inc. | Multilayered biodegradable stent and method for its manufacture |
US5443458A (en) * | 1992-12-22 | 1995-08-22 | Advanced Cardiovascular Systems, Inc. | Multilayered biodegradable stent and method of manufacture |
US5599291A (en) * | 1993-01-04 | 1997-02-04 | Menlo Care, Inc. | Softening expanding ureteral stent |
WO1994016747A1 (en) * | 1993-01-21 | 1994-08-04 | Coloplast A/S | A method for producing a hydrophilic coating on a surface and a medical article produced by the method |
WO1995010989A1 (en) * | 1993-10-19 | 1995-04-27 | Scimed Life Systems, Inc. | Intravascular stent pump |
WO1995029647A2 (en) * | 1994-04-29 | 1995-11-09 | Scimed Life Systems, Inc. | Stent with collagen |
WO1996025897A2 (en) * | 1995-02-22 | 1996-08-29 | Menlo Care, Inc. | Covered expanding mesh stent |
US5554180A (en) * | 1995-07-07 | 1996-09-10 | Aeroquip Corporation | Intraluminal stenting graft |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000018446A1 (en) * | 1998-09-25 | 2000-04-06 | Cathnet-Science S.A. | Multi-layered sleeve for intravascular expandable device |
WO2000018331A3 (en) * | 1998-09-29 | 2000-07-06 | Bard Inc C R | Drug delivery systems |
US6251079B1 (en) | 1998-09-30 | 2001-06-26 | C. R. Bard, Inc. | Transthoracic drug delivery device |
US6517527B2 (en) | 1998-09-30 | 2003-02-11 | C. R. Bard, Inc. | Transthoracic drug delivery device |
US6733488B2 (en) | 1998-09-30 | 2004-05-11 | C.R. Bard, Inc. | Transthoracic drug delivery device |
US6620170B1 (en) | 1999-04-26 | 2003-09-16 | C. R. Bard, Inc. | Devices and methods for treating ischemia by creating a fibrin plug |
US6719805B1 (en) | 1999-06-09 | 2004-04-13 | C. R. Bard, Inc. | Devices and methods for treating tissue |
US6277082B1 (en) | 1999-07-22 | 2001-08-21 | C. R. Bard, Inc. | Ischemia detection system |
US6629987B1 (en) | 1999-07-30 | 2003-10-07 | C. R. Bard, Inc. | Catheter positioning systems |
WO2002043799A1 (en) | 2000-11-30 | 2002-06-06 | Kabushikikaisha Igaki Iryo Sekkei | Stent for blood vessel and material for stent for blood vessel |
EP1308180A1 (en) * | 2000-11-30 | 2003-05-07 | Kabushikikaisha Igaki Iryo Sekkei | Stent for blood vessel and material for stent for blood vessel |
EP1308180A4 (en) * | 2000-11-30 | 2007-11-21 | Igaki Iryo Sekkei Kk | Stent for blood vessel and material for stent for blood vessel |
JP4868565B2 (en) * | 2000-11-30 | 2012-02-01 | 株式会社 京都医療設計 | Vascular stent |
EP1381403A2 (en) * | 2001-03-21 | 2004-01-21 | Boston Scientific Limited | Controlling resorption of bioresorbable medical implant material |
AU2002306707B2 (en) * | 2001-03-21 | 2007-12-06 | Boston Scientific Limited | Controlled resorption of medical implants |
US8097274B2 (en) | 2006-10-27 | 2012-01-17 | National Defense Medical Center | Skin substitutes, preparation methods and uses thereof |
GB2456270B (en) * | 2006-10-27 | 2010-09-01 | Niann-Tzyy Dai | Skin substitutes, preparation methods and uses thereof |
WO2008112757A2 (en) * | 2007-03-12 | 2008-09-18 | Gil Vardi | Graft including super-absorbent materials |
WO2008112757A3 (en) * | 2007-03-12 | 2009-09-17 | Gil Vardi | Graft including super-absorbent materials |
WO2012030673A3 (en) * | 2010-08-30 | 2012-04-19 | SinuSys Corporation | Devices for dilating a paranasal sinus opening and for treating sinusitis |
US9498239B2 (en) | 2010-08-30 | 2016-11-22 | SinuSys Corporation | Devices and methods for inserting a sinus dilator |
RU2606662C2 (en) * | 2010-08-30 | 2017-01-10 | Сайньюсис Корпорейшн | Devices and methods for expansion of holes of paranasal sinus and for treatment of sinusitis |
US9629644B2 (en) | 2010-08-30 | 2017-04-25 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9138569B2 (en) | 2012-02-29 | 2015-09-22 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9149616B2 (en) | 2012-02-29 | 2015-10-06 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9504812B2 (en) | 2012-02-29 | 2016-11-29 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9597485B2 (en) | 2012-02-29 | 2017-03-21 | SinuSys Corporation | Devices and methods for dilating a paranasal sinus opening and for treating sinusitis |
US9687263B2 (en) | 2013-05-30 | 2017-06-27 | SinuSys Corporation | Devices and methods for inserting a sinus dilator |
Also Published As
Publication number | Publication date |
---|---|
ATE300965T1 (en) | 2005-08-15 |
JP4194119B2 (en) | 2008-12-10 |
US6517575B1 (en) | 2003-02-11 |
EP1634609A2 (en) | 2006-03-15 |
EP1634609A3 (en) | 2008-04-30 |
CA2275303A1 (en) | 1998-07-09 |
DE69733899D1 (en) | 2005-09-08 |
DE69733899T2 (en) | 2006-04-06 |
EP0956056B1 (en) | 2005-08-03 |
US6117168A (en) | 2000-09-12 |
JP2001513660A (en) | 2001-09-04 |
EP0956056A1 (en) | 1999-11-17 |
CA2275303C (en) | 2009-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6517575B1 (en) | Multilayer liquid absorption and deformation devices | |
US5972027A (en) | Porous stent drug delivery system | |
US5735897A (en) | Intravascular stent pump | |
EP1550477B1 (en) | Stent and process for producing the same | |
EP1562519B1 (en) | Medical devices | |
CA2256142C (en) | Use of a multi-component coil medical construct | |
US9682178B2 (en) | Implantable medical devices fabricated from polymers with radiopaque groups | |
EP2134381B1 (en) | Implantable medical devices fabricated from block copolymers | |
MXPA01003281A (en) | Selective adherence of stent-graft coverings, mandrel and method of making stent-graft device. | |
US20050060020A1 (en) | Covered stent with biologically active material | |
WO1998056312A1 (en) | Stents having multiple layers of biodegradable polymeric composition | |
WO2003061527A1 (en) | Stent bumper struts | |
WO1998020928A1 (en) | Endoprosthetic device with therapeutic compound | |
EP2209562A2 (en) | Stent | |
JP2004167277A (en) | Tubular polytetrafluoroethylene implant with radially expandable stent | |
WO2011005840A2 (en) | Hydrogel enhanced medical devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2275303 Country of ref document: CA Ref country code: CA Ref document number: 2275303 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1997953440 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1998 530201 Kind code of ref document: A Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 1997953440 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1997953440 Country of ref document: EP |