Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS20060041271 A1
Publication typeApplication
Application numberUS 10/923,453
Publication dateFeb 23, 2006
Filing dateAug 20, 2004
Priority dateAug 20, 2004
Also published asUS8133253, US20090069839
Publication number10923453, 923453, US 2006/0041271 A1, US 2006/041271 A1, US 20060041271 A1, US 20060041271A1, US 2006041271 A1, US 2006041271A1, US-A1-20060041271, US-A1-2006041271, US2006/0041271A1, US2006/041271A1, US20060041271 A1, US20060041271A1, US2006041271 A1, US2006041271A1
InventorsGjalt Bosma, Yvonne Hoogeveen, Michiel Koom, Rudolf Mulder
Original AssigneeGjalt Bosma, Hoogeveen Yvonne L, Michiel Koom, Mulder Rudolf T
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vascular filter with sleeve
US 20060041271 A1
Abstract
A covered vascular filter can be placed in a blood vessel, for the purpose of intercepting thrombus. The filter may be introduced to a desired site for medical treatment through a catheter which defines a lumen or passage and a distal port or opening. The filter tends to resiliently expand from a compressed shape when it is inside the catheter lumen, to an expanded shape when the filter is pushed from the catheter lumen. A cover or sleeve over those portions of the filter that would otherwise contact the vessel wall tends to reduce pressure on the vessel wall. The sleeve also tends to resist growth of the vessel wall among the elements of the filter, called endothelialization. In other words, the sleeve resists incorporation of the filter elements into the vessel wall, enabling the filter to be retrievable for a longer time. The various features of the present invention may be used singly or in any combination, as desired in a particular vascular filter.
Images(6)
Previous page
Next page
Claims(9)
1. A medical device for therapeutic treatment of a patient, comprising:
a filter having a first and second end, and a central expandable portion extending between the ends; the central portion tending to resiliently expand in radially outward directions from a compressed initial shape to an expanded deployed shape;
wherein the filter defines a first and second filtering element in the expanded shape, the first and second filtering elements each being near the first and second end, respectively;
the filter having a plurality of ribs arranged in a pre-selected pattern; such that the ribs expand in radially outward directions when the filter expands from the compressed shape to the expanded shape, thereby causing the first and second ends to move toward each other and;
a flexible sleeve encircling at least a portion of the filter, around a longitudinal axis defined between the first and second ends; the sleeve defining a surface area; the sleeve tending to expand with the filter central portion to an expanded shape in which the sleeve represents a tubular surface for contracting a blood vessel wall.
2. The medical device of claim 1, wherein the sleeve is made of foil.
3. The vascular filter as set forth in claim 1, wherein the sleeve tends to reduce pressure imparted by the filter on a blood vessel wall.
4. The medical device of claim 1, wherein the sleeve is made of biodegradable material.
5. The medical device of claim 1, wherein the sleeve extends a time in which the medical device is endothelialized into the blood vessel wall.
6. The medical device of claim 1, wherein the sleeve is made of elastic material.
7. The medical device of claim 1, wherein the sleeve is made of inelastic material.
8. The medical device of claim 1, wherein the filter is retrievable and has a retrieval member.
9. A medical system for therapeutic treatment of a patient, comprising:
a filter with a sleeve, a catheter, and a pushing wire;
the filter having a first and second end, and a central expandable portion extending between the ends; the central portion tending to resiliently expand in radially outward directions from a compressed initial shape to an expanded deployed shape; wherein the filter defines a first and second filtering element in the expanded shape, the first and second filtering elements each being near the first and second end, respectively;
the filter having a plurality of ribs arranged in a pre-selected pattern; such that the ribs expand in radially outward directions when the filter expands from the compressed shape to the expanded shape, thereby causing the first and second ends to move toward each other and;
a flexible sleeve encircling at least a portion of the filter, around a longitudinal axis defined between the first and second ends; the sleeve defining a surface area; the sleeve tending to expand with the filter central portion to an expanded shape in which the sleeve represents a tubular surface for contracting a blood vessel wall; and
the catheter having a proximal and distal end, and a defining a lumen extending between the proximal and distal ends;
the pushing wire being inserted within the lumen;
wherein the filter and sleeve are within the lumen of the catheter in the initial compressed shape.
Description
    BACKGROUND AND SUMMARY OF THE INVENTION
  • [0001]
    1. Technical Background
  • [0002]
    The present invention relates to a vascular filter with a sleeve covering, which can be temporarily or permanently placed inside a blood vessel for the purpose of intercepting thrombus.
  • [0003]
    2. Discussion
  • [0004]
    Some basic types of vascular filters are generally known, wherein a single filter element, mesh or member extends across the direction of flow inside a blood vessel. Several features may be desirable for vascular filters, including non-surgical or “percutaneous” delivery of the filter to a desired site, and expansion from a preferably small initial size to an expanded working size that matches the vascular anatomy at the desired site. Also, a vascular filter should preferably capture a sufficient percentage of thrombus, while allowing blood to flow freely through the filter.
  • [0005]
    Another desirable feature is a capability to remain reliably in the desired position in a patient's anatomy, referred to as “position retention.” One simple attempt at position retention is to wedge a vascular filter against the blood vessel wall by sizing it with a dimension slightly larger than the inside diameter of the blood vessel. In addition, a vascular filter should preferably have a design whereby the filter is self-centering and stable in the vessel, such that the filter has a tendency not to “tilt”, which might result in less effective capturing of thrombus. Some vascular filters may be used in the vena cava, and may be described in such event as a “vena cava filter.”
  • [0006]
    A vascular filter may be delivered through a catheter in a compressed shape, the filter tending to resiliently expand within a blood vessel and to retain the desired position and orientation. The vascular filter tends to trap thrombus or particles, and resist their movement further downstream. The filter includes, in a position of use, an outer shape corresponding to the internal diameter of the blood vessel, and one or more filter elements extending across the vessel.
  • [0007]
    In the temporal sense, there are three type of filters: (i) permanent filters, intended for permanent implantation; (ii) temporary filters, intended for removal within a time period; and (iii) retrievable filters, in which the physician has the option to implant the filter permanently or to remove the filter after some time. In the case of a retrievable filter, the filter may be designed so that the physician can choose whether to retrieve the filter at a later date, after the filter has been in place for a while. This way, the physician can evaluate the performance of the filter and the patient's condition, before deciding whether to retrieve the filter or not.
  • [0008]
    To help in successful retrieval, one factor is to avoid “endothelialization” or in-growth of the vessel wall and tissue around the structural members of the filter. In other words, endothelialization is the healing of the vessel inner surface by endothelial cells. It is desirable to preserve these endothelial cells when removing a retrievable vascular filter, and the improved designs of the present invention tend to minimize any impact during retrieval.
  • [0009]
    On a filter, it may also be desirable to provide releasable temporary position stabilizers, to resist tilting and to enhance position retention. Some vascular filters provide anchors or small barbs for improving position retention, which extend in radial directions outward from the ribs. Some filters may have barbs cut out from a central section of the filter. The barbs tend to gently hold the filter in place inside the vessel.
  • [0010]
    A vascular filter along the lines of the present invention may provide several advantages, including effectively capturing thrombus while allowing blood flow, resisting endothelialization of the filter, and distributing expansive pressures of the filter to a greater area of the vessel wall. In other words, there is less stress on the vessel wall, and the sleeve enables a physician to have a longer time before choosing whether to retrieve a retrievable filter.
  • [0011]
    A vascular filter may have an initial compressed shape, in which the filter may have essentially a tubular shape, and may be contained in a lumen or passage defined by a catheter.
  • [0012]
    After a distal tip of the catheter reaches a desired site for treatment, a wire mandrel or other deployment device may be used to push the filter out of the catheter. And when the filter is released from the catheter, it tends to resiliently expand from the initial compressed shape to an expanded shape. When a vascular filter is retrieved from a blood vessel, the entire filter is resiliently compressed to a relatively small diameter, for extraction through a catheter.
  • [0013]
    A filter according to the present invention has a flexible tubular covering on at least a portion of the filter. As a result, the filter exerts less expansive pressure on the vessel wall, and tends to resist incorporation into the vessel wall for a longer period of time.
  • [0014]
    The term “filter” will be used interchangeably, to refer to either (i) a combination device including a resilient scaffold structure with a sleeve covering, or (ii) only the scaffold component, or (iii) those portion(s) of the scaffold which operate to capture thrombus.
  • [0015]
    The term “tubular” is used in its broadest sense, to encompass any structure arranged a radial distance around a longitudinal axis. Accordingly, “tubular” includes any structure that (i) is cylindrical or not, such as for example an elliptical or polygonal cross-section, or any other regular or irregular cross-section; (ii) has a different or changing cross-section along its length; (iii) is arranged around a straight, curving, bent or discontinuous longitudinal axis; (iv) has an imperforate surface, or a periodic or other perforate, irregular or gapped surface or cross-section; (v) is spaced uniformly or irregularly, including being spaced varying radial distances from the longitudinal axis; (vi) has any desired combination of length or cross-sectional size.
  • [0016]
    A vascular filter may include a first and second filter section, arranged on either side of a body section. The body section and the filter sections thus enclose a space. Due to the elongated shape of the vascular filter, and the arranging of the first and second filter sections on either side of the body member, the present filter may have an enhanced filtering effect. In other words, two opportunities have been created for intercepting thrombus moving inside the blood vessel.
  • [0017]
    A central tubular section tends to resiliently exert slight outward pressure along a large section of contact area on the blood vessel wall. The sleeve distributes this outward pressure to a greater area. Accordingly, the filter tends to exert some small amount of pressure on the internal wall of the blood vessel, and tends to hold itself in place. The vascular filter will consequently tend not to shift position.
  • [0018]
    In addition, because of this elongated shape the vascular filter tends to center itself within the lumen, and not to rotate transversely or tilt over.
  • [0019]
    In an example, a vascular filter may be formed out of one single piece, which provides advantages including simplicity.
  • [0020]
    When viewed along the longitudinal axis of the filter, the filter sections may have the shape of a regular polygon, and thus may provide several smaller filtering “cells”. The purpose of these filtering cells is to intercept thrombus moving inside the blood vessel, and the smaller filtering cells tend to capture more thrombus. All the cells may be of the same size, to provide a uniform filtering effect.
  • [0021]
    The filter sections, as arranged according to an embodiment described above on either side of the tubular body section, may be identical in shape, thereby enhancing the simplicity of the vascular filter according to the present invention.
  • [0022]
    The sleeve of the present invention may be made of any suitable material, and may be affixed to the filter by friction alone, or with fasteners or adhesives of any suitable type. The sleeve may be foil, and/or may be elastic or inelastic. In addition, the sleeve may be biodegradable.
  • [0023]
    It is of course possible to build various vascular filters according to the present invention, by various techniques and of various materials to obtain the desired features. It should be noted that the present invention also relates to methods for manufacturing vascular filters, and for using vascular filters for medical treatment of a patient.
  • [0024]
    These and various other objects, advantages and features of the invention will become apparent from the following description and claims, when considered in conjunction with the appended drawings. The invention will be explained in greater detail below with reference to the attached drawings of a number of examples of embodiments of the present invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0025]
    FIG. 1 shows a side elevation view of a vascular filter with a sleeve covering, arranged according to the principles of the present invention;
  • [0026]
    FIG. 2 illustrates an end elevation view of the vascular filter and sleeve covering of FIG. 1;
  • [0027]
    FIG. 3 shows a perspective view of a vascular filter;
  • [0028]
    FIG. 4 shows an end elevation view of a vascular filter;
  • [0029]
    FIGS. 5 and 6 are side elevation views of vascular filters during deployment from a catheter;
  • [0030]
    FIG. 7 is a plan view of a vascular filter inside a blood vessel;
  • [0031]
    FIG. 8 is a plan view of a vascular filter with sleeve covering inside a blood vessel;
  • [0032]
    FIG. 9 is a perspective view of a catheter-based medical device delivery system; and
  • [0033]
    FIG. 10 is a partial cutaway view of a vascular filter inside a blood vessel.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0034]
    The following description of the preferred embodiments of the present invention is merely illustrative in nature, and as such it does not limit in any way the present invention, its application, or uses. Numerous modifications may be made by those skilled in the art without departing from the true spirit and scope of the invention.
  • [0035]
    The drawings depict a vascular filter medical device 10 along the lines of the present invention. The drawings depict an example vascular filter medical device 10, which includes a filter structure 12 and a sleeve 14. Sleeve 14 is affixed to filter structure 12 in any suitable manner, including adhesives, stitching, or simply weaving sleeve 14 among the members of filter structure 12.
  • [0036]
    Medical device 10 has an expanded shape, shown in FIGS. 1 and 2, and an initial compressed shape, shown in FIG. 9. If medical device 10 is delivered with a catheter 16, and a pushing wire or mandrel 18, medical device 10 will have the initial compressed shape when it is within a passage or lumen of the catheter 16. In this configuration, the filter 12 may have a tubular shape, and a pattern of filter members may be affixed together or be made of a single piece of material with a patterned series of cuts.
  • [0037]
    In any event, filter 12 tends to resiliently expand from the initial compressed shape to the expanded shape. Sleeve 14 tends to unfold as filter 12 expands resiliently from the initial compressed shape to the expanded shape. Once the filter 12 is in the expanded shape, it tends to resiliently maintain that expanded shape, when deployed at a desired site for treatment within a body passage or vessel.
  • [0038]
    The terms “filter” or “vascular filter” or “filtering” may be used in a broad or interchangeable fashion to refer generally to the entire medical device 10, filter structure 12, the first and second filtering section 22 and 24, the filtering effect on body fluids or particulates, or the results of such a filtering effect, or any other relevant aspect of the present invention.
  • [0039]
    Structurally, filter 12 has a central section 20, flanked by a first and second filtering section 22 and 24, which are flanked by a first and second end 26 and 28. The particular example depicted in the drawings is made from a single piece of tubular material, with a patterned series of cuts, which is treated to resiliently expand and form the filtering mesh structure. The filter structure could of course also be formed of multiple members which are affixed together.
  • [0040]
    Sleeve 14 may have a generally tubular or annular structure, such that whatever configuration or shape may be selected for the sleeve, it encircles all or a portion of filter 12 around its longitudinal axis. Sleeve 14 may be made of a foil, film or a metal or polymer material. Also, sleeve 14 may be made of elastic or inelastic material. In addition, sleeve 14 may also be made of biodegradable material.
  • [0041]
    The sleeve tends to distribute expansive pressures of the members of filter 12 to a greater portion of an inner wall of a body passage or vessel in which the medical device 10 is implanted.
  • [0042]
    While the medical device 10 is implanted within a patient, body tissues naturally tend to incorporate or endothelialize implanted objects. This process of endothelialization may take place over a predictable period of time, and when a filter or other medical device has been incorporated or endothelialized, it may be preferred to leave it in place indefinitely. Sleeve 14 may tend to extend this period of time of incorporation, allowing medical filter 10 to remain in place and provide therapeutic benefit for a longer period of time, yet continue to be retrievable.
  • [0043]
    If the medical device is intended to be a temporary or a retrievable filter, such that the filter may be removed or retrieved at a later time, the filter may be provided with features advantageous to such possible retrieval. For example, filter 12 may have on one or both ends a hook or loop construction, such as for example retrieval hook 30. Hook 30 may be used to extract the medical device 10 back into a catheter by means of a cooperating hook, snare or grabbing member.
  • [0044]
    In the compressed shape when the vascular filter is inside the catheter, the filter may include cuts extending in the longitudinal direction of the filter between, but not as far as, the ends of the filter. The cuts define strips of material as illustrated in the drawings. These strips expand to form the filtering first and second mesh. The specific cuts consequently also form the filter elements 22 and 24 on either side of the filter 12. The strips extend in a generally longitudinal direction.
  • [0045]
    The vascular filter 12 embodiment illustrated here may of course be used in the vena cava or any other desired site for treatment. The filter 12 preferably includes a number of ribs extending in a longitudinal direction along the internal wall of the blood vessel or body passage. These ribs together form central body section 20. Each filter section 22 and 24 form a grid shape. Liquid inside the blood vessel can pass through the vascular filter 12, but thrombus or particulates tend to be intercepted by one of the two filter sections 22 or 24.
  • [0046]
    Another advantage of this configuration is that it provides two filter elements for intercepting thrombus moving inside the blood vessel. In addition, due to the sleeve and the filter shape, the filter provides less possibility for any trauma to a vessel.
  • [0047]
    As the filter sections 22 and 24 have been arranged on either side of the central body of the filter, a longitudinally symmetrical shape has been obtained (except for hook 30). There is no difference whether the vascular filter is placed forward or backward inside the blood vessel. In other words, the proximal and distal ends of the filter are identical and symmetrical. Accordingly, a single pre-loaded catheter system may be used to deploy a filter at a desired site, from either an upstream or downstream direction.
  • [0048]
    In the axial view of FIG. 3, the filter sections on either side of the ribs of the vascular filters according to the present invention described above display diamond or polygon shapes. It is also possible to provide vascular filters of which the filter sections display in axial view a star shape, or any other suitable shape, as long as they successfully intercept blood clots or thrombus. An advantage of this feature is that, after passing the first filter section 28 and the tubular section or the elongated body member, a second filter element 30 for intercepting thrombus has been provided. Also, other shapes of the filter sections in axial view are possible, which shapes will occur to those skilled in the field after reading the present description. The shapes of the filter sections in axial view need not be symmetrical, and may in principle have any suitable appearance.
  • [0049]
    As shown in the drawings, the filter 12 preferably has one or more barbs or anchors 32, located on one or more of the longitudinal ribs. The anchors 32 may be positioned at one or both ends of the longitudinal ribs, and may be directed in the proximal or distal directions. As shown, opposing sets of proximal and distal anchors 32 may be arranged to face in both longitudinal directions respectively. This opposing arrangement causes the anchors 32 to resist movement of the filter 12 in both longitudinal directions.
  • [0050]
    The filter 12 may for example be delivered to the vascular region in the general area of the heart from either a femoral artery access point in the leg, or a jugular artery access point in the neck. Because the filter shown in FIG. 2 is longitudinally symmetrical, the same filter delivery system 10 may be used for either femoral or jugular access, because the opposing sets of anchors 32 will resist downstream migration of the filter, regardless of the longitudinal orientation of the filter.
  • [0051]
    Furthermore, retraction of a vascular filter according to the present invention is mentioned above, which should not limit the scope of the claims attached. Regarding the subject of the invention, it is therefore of no consequence whether the filter is placed permanently, in a removable manner, temporarily or otherwise.
  • [0052]
    In addition to the nitinol mentioned so far, many other materials may also be used for manufacturing a vascular filter according to the present invention. By way of alternative, various metals may for instance be used, including stainless steel. In any case, the vascular filter preferably tends to resiliently assume the intended shape after having been ejected from the catheter.
  • [0053]
    Vascular filters according to the present invention may be made of any suitable material using a variety of methods. One material having the desired characteristics of strength, resilience, flexibility, biocompatibility and endurance is nitinol. Other possible materials include stainless steel and any other material having the desired properties.
  • [0054]
    Likewise, the manufacturing methods for the filter of the present invention may include providing a tube, and then cutting a pattern into the tube to enable expansion into the desired shape. Various other methods are of course possible, including forming the filter of discrete members and joining or connecting the members, or chemically etching a substrate. The manufacturing methods may include an inflatable or expandable mold, heating or cooling, welding, etc.
  • [0055]
    In FIG. 9, a medical device 10 is loaded into a catheter 16 lumen which extends from a proximal end having a hub to a distal opening. At least one vascular filter 12 is preferably arranged, in a compressed state, in the distal end of the catheter. The filter 12 is then pushed out the catheter distal opening by a flexible pushing wire 18.
  • [0056]
    In an alternative embodiment, it is also possible that the filter 12 may be inserted at the proximal end of the catheter 16, and then pushed along the entire length of the catheter 16 by the pushing wire 18, after the catheter distal end 20 has been advanced to the desired position.
  • [0057]
    In any event, when the vascular filter 12 is ejected by the pushing wire 18 out from the distal tip of the catheter 16 into the blood vessel, the vascular filter 12 will tend to resiliently expand after being released from the catheter 16. The material and design of the filter 12 results in resilient expansive forces that tend to cause the vascular filter 12 to take the illustrated shape.
  • [0058]
    It should be understood that an unlimited number of configurations for the present invention could be realized. The foregoing discussion describes merely exemplary embodiments illustrating the principles of the present invention, the scope of which is recited in the following claims. Those skilled in the art will readily recognize from the description, claims, and drawings that numerous changes and modifications can be made without departing from the spirit and scope of the invention.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3799590 *Sep 15, 1972Mar 26, 1974P MessaAnti-clogging means for automatic thread-knotting devices
US4793348 *Nov 15, 1986Dec 27, 1988Palmaz Julio CBalloon expandable vena cava filter to prevent migration of lower extremity venous clots into the pulmonary circulation
US4990156 *Jun 14, 1989Feb 5, 1991Lefebvre Jean MarieFilter for medical use
US5108418 *Oct 10, 1990Apr 28, 1992Lefebvre Jean MarieDevice implanted in a vessel with lateral legs provided with antagonistically oriented teeth
US5242462 *Oct 17, 1991Sep 7, 1993Boston Scientific Corp.Percutaneous anti-migration vena cava filter
US5413586 *Mar 12, 1992May 9, 1995EthnorAnti-pulmonary embolism filter and corresponding presentation and fitting kit
US5531788 *May 2, 1994Jul 2, 1996Foundation Pour L'avenir Pour La Recherche Medicale AppliqueeAnti-Pulmonary embolism filter
US6099549 *Jun 11, 1999Aug 8, 2000Cordis CorporationVascular filter for controlled release
US6241746 *Jun 29, 1999Jun 5, 2001Cordis CorporationVascular filter convertible to a stent and method
US6267777 *Sep 29, 2000Jul 31, 2001Cordis CorporationVascular filter convertible to a stent and method
US6443972 *Nov 13, 1998Sep 3, 2002Cordis Europa N.V.Vascular filter
US6989021 *Mar 31, 2003Jan 24, 2006Cordis CorporationRetrievable medical filter
US7217255 *Mar 10, 2003May 15, 2007Advanced Cardiovascular Systems, Inc.Embolic protection devices
US20020028857 *Mar 30, 2001Mar 7, 2002Holy Norman L.Compostable, degradable plastic compositions and articles thereof
US20030139764 *Jan 17, 2003Jul 24, 2003Levinson Melvin E.Radiopaque locking frame, filter and flexible end
US20040087999 *Oct 31, 2002May 6, 2004Gjalt BosmaVascular filter with improved anchor or other position retention
US20040088001 *Mar 31, 2003May 6, 2004Gjalt BosmaRetrievable medical filter
US20040199201 *Oct 30, 2003Oct 7, 2004Scimed Life Systems, Inc.Embolectomy devices
US20050234501 *Apr 15, 2004Oct 20, 2005Barone David DBraided intraluminal filter
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7704267Aug 4, 2004Apr 27, 2010C. R. Bard, Inc.Non-entangling vena cava filter
US7794473Nov 12, 2004Sep 14, 2010C.R. Bard, Inc.Filter delivery system
US8025668Apr 28, 2005Sep 27, 2011C. R. Bard, Inc.Medical device removal system
US8029529Dec 16, 2008Oct 4, 2011C. R. Bard, Inc.Retrievable filter
US8092485Dec 12, 2007Jan 10, 2012C. R. Bard, Inc.Recoverable inferior vena cava filter
US8114116Jan 18, 2008Feb 14, 2012Cook Medical Technologies LlcIntroduction catheter set for a self-expandable implant
US8192479 *Nov 26, 2008Jun 5, 2012Cook Medical Technologies LlcMethod and device for vascular therapy
US8236039Dec 18, 2008Aug 7, 2012Abbott LaboratoriesVena cava filter having wall contacts
US8267954Feb 4, 2005Sep 18, 2012C. R. Bard, Inc.Vascular filter with sensing capability
US8372109Mar 18, 2010Feb 12, 2013C. R. Bard, Inc.Non-entangling vena cava filter
US8430903Nov 18, 2011Apr 30, 2013C. R. Bard, Inc.Embolus blood clot filter and delivery system
US8518072Dec 17, 2007Aug 27, 2013C.R. Bard, Inc.Jugular femoral vena cava filter system
US8574261Jun 27, 2011Nov 5, 2013C. R. Bard, Inc.Removable embolus blood clot filter
US8591565Dec 11, 2009Nov 26, 2013Abbott Laboratories Vascular Enterprises LimitedProcess for loading a stent onto a stent delivery system
US8613754Jul 29, 2010Dec 24, 2013C. R. Bard, Inc.Tubular filter
US8628556Nov 28, 2012Jan 14, 2014C. R. Bard, Inc.Non-entangling vena cava filter
US8690906Mar 7, 2012Apr 8, 2014C.R. Bard, Inc.Removeable embolus blood clot filter and filter delivery unit
US8734480Aug 5, 2011May 27, 2014Merit Medical Systems, Inc.Vascular filter
US8740931Aug 5, 2011Jun 3, 2014Merit Medical Systems, Inc.Vascular filter
US8795318Mar 11, 2010Aug 5, 2014Merit Medical Systems, Inc.Percutaneous retrievable vascular filter
US8925177Jul 17, 2012Jan 6, 2015Abbott Cardiovascular Systems Inc.Methods for improving stent retention on a balloon catheter
US8992562Sep 13, 2010Mar 31, 2015C.R. Bard, Inc.Filter delivery system
US8999364May 25, 2007Apr 7, 2015Nanyang Technological UniversityImplantable article, method of forming same and method for reducing thrombogenicity
US9011479Dec 16, 2011Apr 21, 2015Cleve KoehlerVena cava filter with bidirectional retrieval
US9017367Dec 16, 2013Apr 28, 2015C. R. Bard, Inc.Tubular filter
US9028525Nov 1, 2011May 12, 2015Merit Medical Systems, Inc.Percutaneous retrievable vascular filter
US9107733 *Jan 13, 2006Aug 18, 2015W. L. Gore & Associates, Inc.Removable blood conduit filter
US9131999Nov 17, 2006Sep 15, 2015C.R. Bard Inc.Vena cava filter with filament
US9144484Jan 2, 2014Sep 29, 2015C. R. Bard, Inc.Non-entangling vena cava filter
US9204956Aug 13, 2012Dec 8, 2015C. R. Bard, Inc.IVC filter with translating hooks
US9259341Feb 27, 2013Feb 16, 2016Abbott Cardiovascular Systems Inc.Methods for improving stent retention on a balloon catheter
US9289581 *Mar 10, 2010Mar 22, 2016Cook Medical Technologies LlcBlood perfusion device
US9295393Nov 9, 2012Mar 29, 2016Elwha LlcEmbolism deflector
US9295570Feb 23, 2005Mar 29, 2016Abbott Laboratories Vascular Enterprises LimitedCold-molding process for loading a stent onto a stent delivery system
US9326842Jun 4, 2007May 3, 2016C. R . Bard, Inc.Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access
US9351821Nov 20, 2013May 31, 2016C. R. Bard, Inc.Removable embolus blood clot filter and filter delivery unit
US9387063Dec 5, 2012Jul 12, 2016C. R. Bard, Inc.Embolus blood clot filter and delivery system
US9393095Jul 30, 2013Jul 19, 2016C.R. Bard, Inc.Jugular femoral vena cava filter system
US9414752Nov 9, 2012Aug 16, 2016Elwha LlcEmbolism deflector
US9452039Feb 22, 2013Sep 27, 2016Merit Medical Systems, Inc.Vascular filter
US9498318Nov 4, 2013Nov 22, 2016C.R. Bard, Inc.Removable embolus blood clot filter
US9579225Nov 24, 2014Feb 28, 2017Abbott Cardiovascular Systems Inc.Methods for improving stent retention on a balloon catheter
US9615909Apr 29, 2016Apr 11, 2017C.R. Bard, Inc.Removable embolus blood clot filter and filter delivery unit
US20050143752 *Feb 23, 2005Jun 30, 2005Abbott Laboratories Vascular Entities LimitedCold-molding process for loading a stent onto a stent delivery system
US20060030875 *Aug 4, 2004Feb 9, 2006Tessmer Alexander WNon-entangling vena cava filter
US20060106417 *Nov 12, 2004May 18, 2006Tessmer Alexander WFilter delivery system
US20060247572 *Apr 28, 2005Nov 2, 2006C. R. Bard, Inc.Medical device removal system
US20070167974 *Jan 13, 2006Jul 19, 2007Cully Edward HRemovable blood conduit filter
US20080097620 *May 25, 2007Apr 24, 2008Nanyang Technological UniversityImplantable article, method of forming same and method for reducing thrombogenicity
US20090143851 *Nov 26, 2008Jun 4, 2009Cook IncorporatedMethod and device for vascular therapy
US20090187208 *Jan 18, 2008Jul 23, 2009William Cook Europe ApsIntroduction catheter set for a self-expandable implant
US20100016882 *Dec 12, 2007Jan 21, 2010C.R. Bard, Inc.Recoverable inferior vena cava filter
US20100030257 *Dec 17, 2007Feb 4, 2010C.R. Bard, Inc.Jugular femoral vena cava filter system
US20100168837 *Mar 10, 2010Jul 1, 2010Cook IncorporatedBlood perfusion device
US20110034952 *Sep 13, 2010Feb 10, 2011C.R. Bard, Inc.Filter delivery system
US20110106234 *Oct 30, 2009May 5, 2011Axel GrandtInterluminal medical treatment devices and methods
US20110137335 *Mar 11, 2010Jun 9, 2011Crusader Medical LlcPercutaneous Retrievable Vascular Filter
US20130297003 *Jan 13, 2012Nov 7, 2013Innovia LlcEndoluminal Drug Applicator and Method of Treating Diseased Vessels of the Body
US20140081317 *May 9, 2012Mar 20, 2014Paolo ZanattaRemovable medical device implantable in blood vessels, particularly in the thoracic aorta with aneurysm
CN103502901A *Jan 20, 2012Jan 8, 2014克朗设备公司System for remotely controlling materials handling vehicle
WO2009086205A2 *Dec 19, 2008Jul 9, 2009Abbott LaboratoriesBody lumen filter
WO2009086205A3 *Dec 19, 2008Aug 27, 2009Abbott LaboratoriesBody lumen filter
WO2016204137A1 *Jun 14, 2016Dec 22, 2016テルモ株式会社Medical device and treatment method
Classifications
U.S. Classification606/200
International ClassificationA61M29/00
Cooperative ClassificationA61F2002/016, A61F2230/005, A61F2230/0097, A61F2230/0067, A61F2230/008, A61F2/01, A61F2002/011, A61F2002/018
European ClassificationA61F2/01
Legal Events
DateCodeEventDescription
Jun 27, 2005ASAssignment
Owner name: CORDIS CORPORATION, FLORIDA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BOSMA, GJALT;HOOGEVEEN, YVONNE L.;KOORN, MICHIEL;AND OTHERS;REEL/FRAME:016726/0419
Effective date: 20050513