US20120130475A1 - Sleeves for expandable medical devices - Google Patents
Sleeves for expandable medical devices Download PDFInfo
- Publication number
- US20120130475A1 US20120130475A1 US13/295,861 US201113295861A US2012130475A1 US 20120130475 A1 US20120130475 A1 US 20120130475A1 US 201113295861 A US201113295861 A US 201113295861A US 2012130475 A1 US2012130475 A1 US 2012130475A1
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- Prior art keywords
- expandable implant
- sleeves
- target portion
- expandable
- sleeve
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- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/97—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the outer sleeve being splittable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—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
- A61F2/82—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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/061—Blood vessels provided with means for allowing access to secondary lumens
-
- 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
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Definitions
- the present disclosure relates generally to the transcatheter delivery and remote deployment of implantable medical devices.
- Endoluminal devices used to treat a treatment area of the vasculature of a patient are typically delivered via a catheter assembly.
- Such endoluminal devices may comprise, for example, expandable implants.
- One common type of expandable implant is the stent graft.
- Stent grafts may have a reduced diameter, collapsed configuration for delivery to the patient's vasculature, then be expanded once the treatment area of the vasculature is reached.
- Stent grafts may be constrained in the collapsed configuration by a biocompatible sleeve.
- sleeves may give rise to other problems or issues. For example, it may be difficult to position a stent graft that is constrained by a biocompatible sleeve for implanting within the treatment area of the vasculature. Further, it may be difficult to remove or expand the sleeve to allow for expansion of the stent graft. Finally, orienting or locating a sleeve-constrained stent graft after it has been expanded may be difficult. These issues can be exaggerated when a sleeve-constrained stent graft is configured with side branch fenestrations (or side branch portals) or fenestratable portions configured for the attachment of side branches.
- FIG. 1 is a perspective view of a catheter assembly having a medical device constrained in a delivery profile by a plurality of tubular sleeves;
- FIG. 2 is a perspective view of a catheter assembly having an expanded medical device showing the positions of the sleeves relative to side branch fenestrations of the medical device;
- FIG. 3 is a perspective view of a catheter assembly having a medical device constrained in a delivery profile by angularly displaced sleeves;
- FIG. 4 is a perspective view of a catheter assembly having an expanded medical device showing the positions of the angularly displaced sleeves.
- FIGS. 5A and B are, respectively, perspective and axial views of a catheter assembly having a medical device constrained in a delivery profile
- FIG. 5C is an axial view of the catheter assembly having a medical device constrained in an intermediate configuration
- FIG. 6 is a perspective view of a catheter assembly having a medical device constrained in a delivery profile by a tubular sleeve;
- FIGS. 7A and B are, respectively, perspective and axial views of a catheter assembly having a medical device constrained in a delivery profile
- FIG. 7C is a perspective view of the catheter assembly having a medical device constrained in an intermediate configuration.
- Various embodiments of the present disclosure comprise a catheter assembly configured to deliver an expandable implant to a treatment area of the vasculature of a patient.
- an expandable implant is constrained by one or more sleeves.
- the target portion or portions comprise side branch fenestrations or fenestratable portions. Such target portions may be revealed between adjacent sleeves or between the edges of a single sleeve.
- a catheter assembly 100 in accordance with the present disclosure comprises an expandable implant 102 .
- Expandable implant 102 may comprise any endoluminal device suitable for delivery to the treatment area of a vasculature. Such devices may include, for example, stents, grafts, and stent grafts.
- expandable implant 102 comprises a stent graft.
- Conventional stent grafts are designed to dilate from the diameter of the delivery profile, through a range of intermediary diameters, up to a maximal, pre-determined functional diameter, and generally comprise one or more stent components with one or more graft members displaced over and/or under the stent.
- expandable implant 102 comprises one or more stent components made of nitinol and a graft member made of ePTFE.
- stent component(s) and graft member(s) are within the scope of the present disclosure.
- stent components can have various configurations such as, for example, rings, cut tubes, wound wires (or ribbons) or flat patterned sheets rolled into a tubular form.
- Stent components can be formed from metallic, polymeric or natural materials and can comprise conventional medical grade materials such as nylon, polyacrylamide, polycarbonate, polyethylene, polyformaldehyde, polymethylmethacrylate, polypropylene, polytetrafluoroethylene, polytrifluorochlorethylene, polyvinylchloride, polyurethane, elastomeric organosilicon polymers; metals such as stainless steels, cobalt-chromium alloys and nitinol and biologically derived materials such as bovine arteries/veins, pericardium and collagen.
- Stent components can also comprise bioresorbable materials such as poly(amino acids), poly(anhydrides), poly(caprolactones), poly(lactic/glycolic acid) polymers, poly(hydroxybutyrates) and poly(orthoesters). Any expandable stent component configuration which may be delivered by a catheter is in accordance with the present disclosure.
- graft members include, for example, expanded polytetrafluoroethylene (ePTFE), polyester, polyurethane, fluoropolymers, such as perfouorelastomers and the like, polytetrafluoroethylene, silicones, urethanes, ultra high molecular weight polyethylene, aramid fibers, and combinations thereof.
- a graft member material can include high strength polymer fibers such as ultra high molecular weight polyethylene fibers (e.g., Spectra®, Dyneema Purity®, etc.) or aramid fibers (e.g., Technora®, etc.).
- the graft member may include a bioactive agent.
- an ePTFE graft includes a carbon component along a blood contacting surface thereof. Any graft member which may be delivered by a catheter is in accordance with the present disclosure.
- a stent component and/or graft member may comprise a therapeutic coating.
- the interior or exterior of the stent component and/or graft member can be coated with, for example, a CD34 antigen.
- any number of drugs or therapeutic agents may be used to coat the graft member, including, for example heparin, sirolimus, paclitaxel, everolimus, ABT-578, mycophenolic acid, tacrolimus, estradiol, oxygen free radical scavenger, biolimus A9, anti-CD34 antibodies, PDGF receptor blockers, MMP-1 receptor blockers, VEGF, G-CSF, HMG-CoA reductase inhibitors, stimulators of iNOS and eNOS, ACE inhibitors, ARBs, doxycycline, and thalidomide, among others.
- expandable implant 102 may comprise a radially collapsed configuration suitable for delivery to the treatment area of the vasculature of a patient. Expandable implant 102 may be constrained in a radially collapsed configuration and mounted onto a delivery device such as catheter shaft 110 . The diameter of the expandable implant 102 in the collapsed configuration is small enough for the implant to be delivered through the vasculature to the treatment area. In various embodiments, the diameter of the collapsed configuration is small enough to minimize the crossing profile of catheter assembly 100 and reduce tissue damage to the patient. In the collapsed configuration, the expandable implant 102 may be guided by catheter shaft 110 through the vasculature.
- expandable implant 102 may comprise a radially expanded configuration suitable for implanting the device in the treatment area of a patient's vasculature.
- the diameter of expandable implant 102 may be approximately the same as the vessel to be repaired.
- the diameter of expandable implant 102 in the expanded configuration may be slightly larger than the vessel to be treated to provide a traction fit within the vessel.
- expandable implant 102 may comprise a self-expandable device, such as a self-expandable stent graft. Such devices dilate from a radially collapsed configuration to a radially expanded configuration when unrestrained.
- expandable implant 102 may comprise a device that is expanded with the assistance of a secondary device such as, for example, a balloon.
- catheter assembly 100 may comprise a plurality of expandable implants 102 . The use of a catheter assembly with any number of expandable implants is within the scope of the present disclosure.
- Various medical devices in accordance with the disclosure comprise a sleeve or multiple sleeves.
- the sleeve or sleeves may constrain an expandable implant device in a collapsed configuration for endoluminal delivery of the implant to a treatment portion of the vasculature of a patient.
- the term “constrain” may mean (i) to limit the expansion, either through self-expansion or assisted by a device, of the diameter of an expandable implant or (ii) to cover or surround but not otherwise restrain an expandable implant (e.g., for storage or biocompatibility reasons and/or to provide protection to the expandable implant and/or the vasculature).
- the sleeve or sleeves may be removed in order to allow the expandable implant to expand to its functional diameter and achieve the desired therapeutic outcome.
- the sleeve or sleeves can remain implanted while not interfering with the expandable implant.
- an expandable implant is constrained by a single sleeve which circumferentially surrounds the expandable implant.
- catheter assembly 600 comprises a sleeve 604 .
- sleeve 604 circumferentially surrounds expandable implant 602 and constrains it in a collapsed configuration, in which the diameter is less than the diameter of the unconstrained implant.
- sleeve 604 may constrain expandable implant 602 in a collapsed configuration for delivery within the vasculature.
- an expandable implant is constrained by a plurality of sleeves which circumferentially surround the expandable implant.
- catheter assembly 100 comprises sleeves 104 a , 104 b , and 104 c .
- Each sleeve 104 is distinct and separate from the other two sleeves, and each concentrically surrounds a portion of expandable implant 102 .
- sleeves 104 a , 104 b , and 104 c may be coupled to each other, such as, by adhesive bonding, tethering, or any other form of coupling.
- sleeves 104 a , 104 b , and 104 c may be coupled together by tethers 140 and 142 such that sleeves 104 a , 104 b , and 104 c act as one individual sleeve.
- Tethers 140 and 142 may comprise any of the suitable materials of the present disclosure, such as the same material of which sleeves 104 a , 104 b , and 104 c are made.
- a single sleeve may be cut or perforated in such a manner as to create individual sleeves 104 a , 104 b , and 104 c , but leaving tethers 140 and 142 .
- lateral openings are cut in a single sleeve such that the single sleeve acts as multiple sleeves (e.g., by relatively large sizing of lateral openings, etc.).
- sleeves 104 a , 104 b , and 104 c being coupled together in some manner may facilitate easier removal of the sleeves after deployment of expandable implant 102 and/or or ensure sleeves 104 a , 104 b , and 104 c stay implanted as one individual sleeve.
- each distinct sleeve may be formed as individual sleeves, or may be created by forming a single sleeve around an expandable implant and creating individual sleeves from the single sleeve by, for example, cutting the single sleeve into individual sleeves.
- catheter assembly 300 comprises sleeves 304 a and 304 b .
- Each sleeve 304 is distinct and separate from the other sleeve, and each concentrically surrounds a portion of expandable implant 302 .
- sleeves can be tubular and serve to constrain an expandable implant.
- sleeves are formed from a sheet of one or more materials wrapped or folded about the expandable implant.
- each sleeve can comprise at least one sleeve end adjacent to another sleeve end. While the illustrative embodiments herein are described as comprising one or more tubular sleeves, sleeves of any non-tubular shape that corresponds to an underlying expandable implant or that are otherwise appropriately shaped for a given application are also within the scope of the present disclosure.
- sleeves are formed by wrapping or folding the sheet of material(s) such that two parallel edges of the sheet are substantially aligned. Said alignment may or may not be parallel to or coaxial with the catheter shaft of a catheter assembly. In various embodiments, the edges of the sheet of material(s) do not contact each other.
- the edges of the sheet of material(s) do contact each other and are coupled with a coupling member, as described below, an adhesive, etc.
- the edges of the sheet of material(s) are aligned so that the edges of the same side of the sheet or sheets (e.g., the front or back of the sheet) are in contact with each other.
- the edges of opposite sides of the sheet of material(s) are in contact with each other, such that the edges overlap each other, such that a portion of one side of the sheet is in contact with a portion of the other side. Said another way, the front of the sheet may overlap the rear of the sheet, or vice versa.
- sleeves comprise materials similar to those used to form a graft member.
- a precursor flexible sheet used to make the sleeve can be formed from a flattened, thin wall ePTFE tube.
- the thin wall tube can incorporate “rip-stops” in the form of longitudinal high strength fibers attached or embedded into the sheet or tube wall.
- the sheet of material(s) used to form the sleeve(s) may comprise a series of openings, such that the openings extend from one edge of the sheet to the other.
- a coupling member can be woven or stitched through the series of openings in the sheet of material(s), securing each of the two edges together and forming a tube.
- the coupling member may comprise a woven fiber. In other embodiments, the coupling member may comprise a monofilament fiber. Any type of string, cord, thread, fiber, or wire which is capable of maintaining a sleeve in a tubular shape is within the scope of the present disclosure.
- a single coupling member may be used to constrain the diameter of one or more sleeves.
- a coupling member 614 is woven through openings in a single sleeve 604 to maintain the configuration of sleeve 604 around expandable implant 602 .
- a single coupling member 114 is woven through openings in a plurality of sleeves 104 a , 104 b , and 104 c.
- multiple coupling members may be used to constrain the diameter of one or more sleeves.
- coupling members 314 a and 314 b are used to maintain the configuration of sleeves 304 a and 304 b , respectively, around expandable implant 302 .
- the use of any number of coupling members in conjunction with a single sleeve or any number of sleeves is within the scope of the present disclosure.
- the expandable implant may be deployed within the vasculature of a patient.
- An expandable implant in a collapsed configuration may be introduced to a vasculature and directed by a catheter assembly to a treatment area of the vasculature. Once in position in the treatment area of the vasculature, the expandable implant may be expanded to an expanded configuration.
- the coupling member or members can be disengaged from the sleeve or sleeves from outside of the body of the patient, which allows the sleeve(s) to open and the expandable implant to expand.
- the expandable implant may be self-expanding, or the implant may be expanded by a device, such as a balloon.
- the coupling member or members may be disengaged from the sleeve or sleeves by a mechanical mechanism operated from outside of the body of the patient.
- the member or members may be disengaged by applying sufficient tension to the member or members.
- a dial or rotational element may be attached to the coupling member or members outside of the body. Rotation of the dial or rotational element may provide sufficient tension to disengage the coupling member or members.
- coupling member or members may be disengaged by non-mechanical mechanisms, such as, for example, dissolution, by providing ultrasonic energy.
- non-mechanical mechanisms such as, for example, dissolution
- ultrasonic energy sufficient ultrasonic energy is provided to coupling member or members to disengage them from the sleeve or sleeves.
- catheter assembly 600 may be used to deliver an implant expandable implant 602 to a treatment area of a vasculature.
- Expandable implant 602 has a collapsed configuration for delivery, and sleeve 604 circumferentially surrounds expandable implant 602 and is held closed by coupling member 614 .
- coupling member 614 is disengaged from sleeve 604 and sleeve 604 is released, allowing expandable implant 602 to expand to a larger diameter.
- a single coupling member closing a plurality of sleeves is disengaged from the plurality of sleeves to allow an expandable device to be expanded.
- catheter assembly 100 comprises a plurality of sleeves 104 surrounding expandable implant 102 .
- Each sleeve 104 is oriented on the longitudinal axis of catheter shaft 110 such that the portion of each sleeve 104 stitched together by a single coupling member 114 is substantially aligned with each other.
- any degree of relative angular displacement between the plurality of sleeves 304 is within the scope of the present disclosure.
- expandable implant 102 may be self-expandable, or may expand with the aid of a device such as a balloon.
- Coupling member 114 is then further disengaged, allowing the portion of expandable implant 102 constrained by the next most distal sleeve 104 b to expand to a larger diameter.
- the remainder of coupling member 114 may then be disengaged, and the next most distal sleeve 104 a is opened, allowing expandable implant 102 to expand to its expanded configuration the along the remainder of its longitudinal axis.
- catheter assembly 300 comprises at least two sleeves 304 a and 304 b .
- Sleeves 304 a and 304 b are held closed by coupling members 314 a and 314 b , respectively.
- sleeves 304 a and 304 b may be oriented such that the portions of the sleeves secured by coupling members 314 a and 314 b are angularly displaced relative to each other by about 180 degrees.
- the portions of the sleeves secured by coupling members 314 a and 314 b are angularly displaced relative to each other by more than about zero degrees and less than about 180 degrees. Any degree of relative angular displacement between the plurality of sleeves 304 is within the scope of the present disclosure.
- coupling members 314 a and 314 b may be disengaged separately to open sleeves 304 a and 304 b . Once both sleeves 304 have been opened, expandable implant 302 may be expanded to an expanded configuration.
- an expandable implant may further comprise an intermediate configuration.
- the diameter of the expandable implant is constrained in a diameter smaller than the expanded configuration and larger than the collapsed configuration.
- the expandable implant may be expanded from the collapsed configuration to the intermediate configuration once the implant has been delivered near the treatment area of the vasculature of a patient.
- the intermediate configuration may, among other things, assist in properly orienting and locating the expandable implant within the treatment area of the vasculature.
- an expandable implant may be concentrically surrounded by at least two sleeves having different diameters.
- one or more primary sleeves constrain the expandable implant in a delivery profile. Once the primary sleeve is opened, one or more secondary sleeves constrain the expandable implant in an intermediate configuration.
- the expandable implant may be self-expanding, or the implant may be expanded by a device, such as a balloon.
- a catheter assembly 700 comprises an expandable implant 702 and secondary sleeves 704 a and 704 b .
- Secondary sleeves 704 a and 704 b constrain expandable implant 702 to an intermediate configuration.
- Secondary sleeves 704 a and 704 b are held in position around expandable implant 702 by coupling members 714 a and 714 b , respectively.
- Catheter assembly 700 further comprises a primary sleeve 718 , which constrains expandable implant 702 in a collapsed configuration for delivery to the vasculature of a patient.
- Primary sleeve 718 is held in position around expandable implant 702 by primary coupling member 722 .
- expandable implant 702 Once expandable implant 702 is sufficiently close to the treatment area of the vasculature, primary coupling member 722 is disengaged from primary sleeve 718 , which releases primary sleeve 718 and allows expanded implant 702 to expand to a larger diameter. After primary sleeve 718 has been expanded, secondary sleeves 704 a and 704 b constrain the expandable implant 702 in the intermediate configuration. In the intermediate configuration, expandable implant 702 may be oriented and adjusted to a final desirable location within the treatment area of the vasculature.
- catheter assembly 500 comprises an expandable implant 502 , a monosleeve 504 , a primary coupling member 516 and a secondary coupling member 514 .
- Monosleeve 504 further comprises a plurality of intermediate holes 506 .
- secondary coupling member 514 is stitched or woven through intermediate holes 506 , constricting monosleeve 504 and expandable implant 502 to the diameter of an intermediate configuration.
- the diameter of expandable implant 502 is less than the expanded diameter and larger than the diameter of the collapsed configuration.
- Monosleeve 504 further comprises a plurality of compressed holes 508 .
- primary coupling member 516 is stitched or woven through compressed holes 508 , constricting monosleeve 504 and expandable implant 502 to the diameter of the collapsed configuration.
- the diameter of the collapsed configuration is selected to allow for delivery of the expandable implant 502 to the treatment area of the vasculature of a patient.
- primary coupling member 516 may be disengaged from monosleeve 504 , allowing expandable implant 502 to be expanded to the intermediate configuration. Expandable implant 502 may be oriented and adjusted to a proper location within the treatment area of the vasculature. After final positioning, secondary coupling member 514 may be disengaged from monosleeve 504 , and expandable implant 502 may be expanded to the expanded configuration.
- coupling members for example, primary and secondary coupling members
- sleeves for example primary and secondary sleeves
- various embodiments may comprise a plurality of expandable implants.
- a single sleeve, multiple sleeves, and/or multiple concentric sleeves may be used in conjunction with the plurality of expandable implants.
- the use of any number of expandable implants, with any configuration of single or multiple sleeves, is within the scope of the present disclosure.
- sleeves used to constrain expandable implants may further comprise radiopaque markers.
- radiopaque markers may be located at the edges of sleeves, in the region where a coupling member is stitched through the series of openings. Radiopaque markers may assist in the positioning and orientation of the expandable implant within a vasculature, for example, by increasing the visibility of the location and orientation of sleeves and coupling member during the use of a radiographic device, such as an x-ray.
- sleeve 104 c may comprise a radiopaque marker (not shown).
- the radiopaque marker comprises a circumferential band, located at or near the distal end of sleeve 104 c . Any placement or configuration of a radiopaque marker which assists in the location and orientation of an expandable implant within a vasculature is within the scope of the present disclosure.
- an expandable implant may comprise at least one target portion.
- the target portion or portions are located on the surface of the expandable implant.
- the target portion or portions may comprise side branch fenestrations.
- Side branch fenestrations allow for branching devices, such as branching stent grafts, to be connected to and in with communication the expandable implant.
- the diameter of the side branch fenestrations may be approximately the same as the vessel to be repaired. In other configurations, the diameter of the side branch fenestrations may be larger than the diameter of the vessel to be repaired. In yet other configurations, the diameter of the side branch fenestrations may be less than the diameter of the vessel to be repaired.
- side branch fenestrations may be, for example circular, “D” shaped, oval, triangular, square, polygon shaped or randomly shaped. Side branch fenestrations of any cross-sectional shape are within the scope of the present disclosure.
- target portions may comprise a fenestratable portion.
- the target portions are comprised of a frangible material which may be fenestrated by an endolumenal tool after the expandable implant has been partially or completely implanted in the vasculature of a patient. Once fenestrated, the target portion may be used, for example, to install branching stent grafts to the expandable implant.
- the target portions may be oriented such that they are covered by one or more sleeves. In such configurations, the target portions may be exposed to the vasculature upon expansion of the one or more sleeves.
- expandable device 300 comprises target portions 400 and 402 .
- Target portions 400 and 402 are configured such that they are covered by sleeves 304 a and 304 b when the expandable implant 302 is in a collapsed configuration. Once sleeves 304 a and 304 b are expanded, expandable implant 302 expands to a larger diameter, exposing target portions 400 and 402 between parallel edges of the sleeves.
- target portions may be oriented such that they are surrounded, but not covered, by multiple sleeves.
- catheter assembly 100 comprises an expandable implant 102 with target portions 200 and 202 .
- target portions 200 and 202 are positioned such that they are surrounded, and not covered, by adjacent sleeves 104 a , 104 b and 104 c.
- sleeves 104 may comprise lateral openings 116 and/or 118 .
- lateral openings 116 and/or 118 comprise apertures, notches or indentations at either or both ends of sleeves 104 .
- Such apertures, notches or indentations may interact with each other to surround, but not cover, target portions 200 and/or 202 .
- target portion 200 may be positioned between the distal end 106 of sleeve 104 a and the proximal end 108 of sleeve 104 b .
- Distal end 106 of sleeve 104 a and proximal end 108 of sleeve 104 b may each comprise lateral openings 116 and/or 118 which allow target portion 200 to be exposed to the vasculature of the patient upon expansion of sleeves 104 a and 104 b.
- target portion 202 may be positioned between the distal end 106 of sleeve 104 b and the proximal end 108 of sleeve 104 c .
- Distal end 106 of sleeve 104 b and proximal end 108 of sleeve 104 c may each comprise circular notches which allow target portion 200 to be exposed to the vasculature of the patient upon expansion of sleeves 104 b and 104 c.
- lateral openings may be present in each of the sleeves and located so as to allow the exposure of target portions to the vasculature at each stage of deployment.
- the lateral openings of the primary and secondary sleeves may be of different sizes, for example, smaller on the secondary sleeve (or sleeves) and larger on the primary sleeve (or sleeves) (or vice versa).
- target portions may be positioned under lateral openings cut in a single sleeve.
- the lateral openings are large enough that the single sleeve acts as multiple sleeves like those described above with regard to FIG. 2 .
- sleeves 704 a and/or 704 b may comprise at least one window which is large enough and oriented such that the lateral openings are oriented over at least one target portion. Any configuration of sleeve which allows access to target portions of an expandable implant is within the scope of the present invention.
- expandable devices may comprise a plurality of target portions such that at least one target portion is located between adjacent sleeves and at least one target portion is located between the parallel edges of an expanded sleeve or sleeves. Any configuration of target portions, including those located between adjacent sleeves and those located between parallel edges of an expanded sleeve, are within the scope of the present disclosure.
- the target portions may comprise radiopaque segments.
- the target portions may be surrounded by radiopaque segments or markers which assist in locating and orienting the target portions and the expandable implant within the patient's vasculature.
- the target portions comprise both radiopaque segments and either a side branch fenestration or a fenestratable portion.
- radiopaque segments may, among other things, assist in the delivery to and installation of side branch stent grafts to the target portions.
- a target portion may comprise a drug eluting element.
- a drug eluting element comprises a segment which releases a therapeutic agent or drug once the target portion has been exposed to the vasculature of a patient.
- therapeutic agents or drugs include prochlorperazine edisylate, ferrous sulfate, aminocaproic acid, mecaxylamine hydrochloride, procainamide hydrochloride, amphetamine sulfate, methamphetamine hydrochloride, benzphetamine hydrochloride, isoproteronol sulfate, phenmetrazine hydrochloride, bethanechol chloride, methacholine chloride, pilocarpine hydrochloride, atropine sulfate, scopolamine bromide, isopropamide iodide, tridihexethyl chloride, phenformin hydrochloride, methylphenidate hydrochloride, theophylline cholinate, cephalexin hydrochloride, diphenidol, meclizine hydrochloride, prochlorperazine maleate, phenoxybenzamine, thiethylperazine maleate
- proteins and peptides which include, but are not limited to, insulin, colchicine, glucagon, thyroid stimulating hormone, parathyroid and pituitary hormones, calcitonin, renin, prolactin, corticotrophin, thyrotropic hormone, follicle stimulating hormone, chorionic gonadotropin, gonadotropin releasing hormone, bovine somatotropin, porcine somatropin, oxytocin, vasopressin, prolactin, somatostatin, lypressin, pancreozymin, luteinizing hormone, LHRH, interferons, interleukins, growth hormones such as human growth hormone, bovine growth hormone and porcine growth hormone, fertility inhibitors such as the prostaglandins, fertility promoters, growth factors, and human pancreas hormone releasing factor.
- target portions may comprise a sensor such as a temperature and/or pressure sensor.
- the sensor may measure the rate of blood flow.
- Any sensor which may be implanted or connected to target portions of an expandable implant are within the scope of the invention and irrespective of the type of sensor used, sleeves may be oriented and configured such that the sensor or sensors are exposed the vasculature of the patient upon expansion and/or removal of the sleeves by structures and methods such as those disclosed herein.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
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- Prostheses (AREA)
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- Materials For Medical Uses (AREA)
Priority Applications (20)
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US13/295,861 US20120130475A1 (en) | 2010-11-16 | 2011-11-14 | Sleeves for expandable medical devices |
BR112013010212A BR112013010212A2 (pt) | 2010-11-16 | 2011-11-15 | mangas para dispositivos médicos expansíveis |
CN201180054939.0A CN103209660B (zh) | 2010-11-16 | 2011-11-15 | 用于可扩张医疗装置的套管 |
RU2013127213/14A RU2013127213A (ru) | 2010-11-16 | 2011-11-15 | Манжеты для расширяемых медицинских устройств |
EP21192919.5A EP3939550A1 (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
ES11788725T ES2898970T3 (es) | 2010-11-16 | 2011-11-15 | Manguitos para dispositivos médicos expandibles |
JP2013539933A JP5952294B2 (ja) | 2010-11-16 | 2011-11-15 | 延伸型医療デバイス用のスリーブ |
AU2011329141A AU2011329141A1 (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
CA2929628A CA2929628C (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
CA2815842A CA2815842C (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
CN201610878390.1A CN106344233B (zh) | 2010-11-16 | 2011-11-15 | 用于可扩张医疗装置的套管 |
PCT/US2011/060695 WO2012068046A2 (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
EP11788725.7A EP2640313B1 (en) | 2010-11-16 | 2011-11-15 | Sleeves for expandable medical devices |
US14/061,595 US9592143B2 (en) | 2010-11-16 | 2013-10-23 | Sleeves for expandable medical devices |
AU2015204324A AU2015204324B2 (en) | 2010-11-16 | 2015-07-15 | Sleeves for expandable medical devices |
JP2016115464A JP6480382B2 (ja) | 2010-11-16 | 2016-06-09 | 延伸型医療デバイス用のスリーブ |
US15/430,263 US10610395B2 (en) | 2010-11-16 | 2017-02-10 | Sleeves for expandable medical devices |
AU2017204204A AU2017204204B2 (en) | 2010-11-16 | 2017-06-21 | Sleeves for expandable medical devices |
JP2019020830A JP7317516B2 (ja) | 2010-11-16 | 2019-02-07 | 延伸型医療デバイス用のスリーブ |
US16/827,259 US20200237542A1 (en) | 2010-11-16 | 2020-03-23 | Sleeves for expandable medical devices |
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US16/827,259 Pending US20200237542A1 (en) | 2010-11-16 | 2020-03-23 | Sleeves for expandable medical devices |
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WO2012068046A2 (en) | 2012-05-24 |
US20170151079A1 (en) | 2017-06-01 |
CN106344233B (zh) | 2019-07-26 |
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EP2640313B1 (en) | 2021-10-06 |
CA2929628A1 (en) | 2012-05-24 |
RU2013127213A (ru) | 2014-12-27 |
CA2929628C (en) | 2018-07-24 |
CN103209660A (zh) | 2013-07-17 |
BR112013010212A2 (pt) | 2016-09-13 |
JP7317516B2 (ja) | 2023-07-31 |
EP2640313A2 (en) | 2013-09-25 |
JP2014501563A (ja) | 2014-01-23 |
WO2012068046A3 (en) | 2012-11-29 |
AU2011329141A1 (en) | 2013-05-23 |
US9592143B2 (en) | 2017-03-14 |
CN106344233A (zh) | 2017-01-25 |
CA2815842C (en) | 2016-07-05 |
EP3939550A1 (en) | 2022-01-19 |
ES2898970T3 (es) | 2022-03-09 |
JP2019093190A (ja) | 2019-06-20 |
US10610395B2 (en) | 2020-04-07 |
US20200237542A1 (en) | 2020-07-30 |
CA2815842A1 (en) | 2012-05-24 |
JP6480382B2 (ja) | 2019-03-06 |
JP2016179199A (ja) | 2016-10-13 |
CN103209660B (zh) | 2016-11-02 |
JP5952294B2 (ja) | 2016-07-13 |
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