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Publication numberUS20070016247 A1
Publication typeApplication
Application numberUS 11/534,550
Publication dateJan 18, 2007
Filing dateSep 22, 2006
Priority dateDec 13, 2001
Also published asDE60221709D1, DE60221709T2, EP1461106A1, EP1461106B1, US7153320, US20030114879, WO2003051443A1
Publication number11534550, 534550, US 2007/0016247 A1, US 2007/016247 A1, US 20070016247 A1, US 20070016247A1, US 2007016247 A1, US 2007016247A1, US-A1-20070016247, US-A1-2007016247, US2007/0016247A1, US2007/016247A1, US20070016247 A1, US20070016247A1, US2007016247 A1, US2007016247A1
InventorsCharles Euteneuer, Thomas Broome
Original AssigneeScimed Life Systems, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hydraulic controlled retractable tip filter retrieval catheter
US 20070016247 A1
Abstract
Distal protection filter retrieval devices and methods of retrieving a distal protection filter. A filter retrieval catheter may comprise an inner tube, an outer tube disposed over the inner tube, an annular lumen disposed between the inner tube and the outer tube, and a tapered member coupled to the lumen. The tapered member may be movable between a first position for passing a lesion and a second position retrieving a filter.
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Claims(9)
1. A filter retrieval catheter, comprising:
an inner tube having a proximal end, a distal end, and an inner lumen extending therethrough;
an outer tube disposed over the inner tube, the outer tube including a proximal end and a distal end, wherein an annular lumen is defined between the inner tube and the outer tube; and
a tip member slidably disposed in the annular lumen for movement between a first position and a second position under the influence of fluid pressure.
2. The filter retrieval catheter in accordance with claim 1, wherein a quantity of fluid is disposed within the annular lumen.
3. The filter retrieval catheter in accordance with claim 1, wherein, in the first position at least a portion of the tip member extends distal of the distal end of the outer tube.
4. The filter retrieval catheter in accordance with claim 1, wherein, in the second position the tip member is disposed proximal to the distal end of the outer tube.
5. The filter retrieval catheter in accordance with claim 1, further comprising a shaft disposed within the inner lumen.
6. The filter retrieval catheter in accordance with claim 5, wherein the shaft includes a filter coupled to the shaft.
7. A method of retrieving a filter from a blood vessel, comprising the steps of:
providing a catheter having a distal tip movable between first and second positions under the influence of fluid pressure;
advancing the catheter to the filter;
altering the fluid pressure to allow the tip to move between the first and the second position;
enclosing the filter at least in part within the catheter; and
removing the catheter and filter proximally from the blood vessel.
8. The method in accordance with claim 7, wherein the step of altering the fluid pressure includes decreasing the fluid pressure, and wherein decreasing the fluid pressure shifts the tip from the first position to the second position.
9. The method in accordance with claim 7, wherein the step of altering the fluid pressure includes increasing the fluid pressure, and wherein increasing the fluid pressure shifts the tip from the first position to the second position.
Description
  • [0001]
    This application is a continuation of U.S. application Ser. No. 10/017,877 filed Dec. 13, 2001.
  • BACKGROUND OF THE INVENTION
  • [0002]
    1. Field of the Invention
  • [0003]
    The present invention pertains to catheters for retrieving a distal protection filter. More precisely, the present invention pertains to retrieval catheters having a tapered distal tip.
  • [0004]
    2. Description of the Related Art
  • [0005]
    Heart disease is a major problem in the United States and throughout the world. Conditions such as atherosclerosis result in blood vessels becoming blocked or narrowed. This blockage can result in lack of oxygenation of the heart, which has significant consequences since the heart muscle must be well oxygenated in order to maintain its blood pumping action.
  • [0006]
    Occluded, stenotic, or narrowed blood vessels may be treated with a number of relatively non-invasive medical procedures including percutaneous transluminal angioplasty (PTA), percutaneous transluminal coronary angioplasty (PTCA), and atherectomy. Angioplasty techniques typically involve the use of a balloon catheter. The balloon catheter is advanced over a guidewire such that the balloon is positioned adjacent a stenotic lesion. The balloon is then inflated and the restriction of the vessel is opened. During an atherectomy procedure, the stenotic lesion may be mechanically cut away from the blood vessel wall using an atherectomy catheter.
  • [0007]
    During angioplasty and atherectomy procedures, embolic debris can be separated from the wall of the blood vessel. If this debris enters the circulatory system, it could block other vascular regions including the neural and pulmonary vasculature, both of which are highly undesirable. During angioplasty procedures, stenotic debris may also break loose due to manipulation of the blood vessel. Because of this debris, a number of devices, termed distal protection devices, have been developed to filter out this debris.
  • BRIEF SUMMARY OF THE INVENTION
  • [0008]
    The present invention pertains to distal protection filter retrieval catheters. The retrieval catheter may include an inner tube, an outer tube disposed over the inner tube, a lumen disposed between the inner tube and the outer tube, and a tapered member coupled to the lumen. The tapered member may include, for example, a distal tip or a rolling membrane movable between a first position and a second position.
  • [0009]
    The first position may comprise the most appropriate position for advancing the catheter across, for example, a stent or lesion. The second position may comprise the most appropriate position for retrieving a distal protection filter. Shifting the tapered member between the first position and the second position may occur by, for example, altering fluid pressure, venting fluid, or infusing fluid into the lumen.
  • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
  • [0010]
    FIG. 1 is a cross-section of a distal protection filter retrieval catheter disposed within a blood vessel including a tapered member in a first position;
  • [0011]
    FIG. 2 is a cross-section of the distal protection filter retrieval catheter of FIG. 1 having the tapered member in a second position;
  • [0012]
    FIG. 3 is a cross-section of an alternate distal protection filter retrieval catheter disposed having a tapered member in a first position; and
  • [0013]
    FIG. 4 is a cross-section of the distal protection filter retrieval catheter of FIG. 3 having a tapered member in a second position.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0014]
    The following description should be read with reference to the drawings wherein like reference numerals indicate like elements throughout the several views. The detailed description and drawings illustrate example embodiments of the claimed invention.
  • [0015]
    FIG. 1 is a cross-section of a distal protection filter retrieval catheter 10 disposed within a blood vessel 12 and including a tapered member 14 configured in a first position. Removing a distal protection filter 16 from blood vessel 12 following an intravascular procedure may be complicated by a number of factors. For example, if the intravascular procedure includes the placement of a stent 18 adjacent a lesion 20, a retrieval catheter may catch or otherwise engage stent 18, which could lead to the displacement of stent 18. To minimize the chance of disrupting stent 18 or any other interventions that may be present adjacent lesion 20, distal protection filter retrieval catheter 10 has been designed to include a tapered member 14 that may assist passing catheter 10 past lesion 20 while causing minimal disruption of stent 18.
  • [0016]
    Catheter 10 includes an outer tube 22 disposed over an inner tube 24 and including an annular lumen 26 disposed therebetween. Outer tube 22 includes a proximal end 28 and a distal end 30. Outer tube 22 may be comprised of a polymer, stainless steel or nickel-titanium alloy hypodermic tubing, or a composite thereof. Alternatively, outer tube 22 may be generally comprised of metals, polymers, or composites thereof.
  • [0017]
    Inner tube 24 includes a proximal end 32, a distal end 34, and an inner lumen 36 extending therethrough. Similar to what is stated above for outer tube 22, inner tube 24 may be comprised of metals, polymers, or composites thereof. Inner lumen 36 may comprise a guidewire lumen adapted and configured to have a guidewire, core wire, etc. disposed therein.
  • [0018]
    Tapered member 14 may include a proximal end 42 and a tapered distal tip 44. Tapered member 14 may be coupled to lumen 26. For example, tapered member may comprise a polymeric, metallic, or composite tubular member slidably disposed within lumen 26. In addition, the position of tapered member may be maintained or otherwise altered by altering the pressure and/or the amount of fluid within lumen 26.
  • [0019]
    Tapered member 14 is movable between a first position and a second position. According to this embodiment, the first position is understood to be tapered member 14 configured such that at least a portion of distal tip 44 thereof extends beyond distal end 30 of outer tube 22. The first position may be the most appropriate position for tapered member 14 when advancing catheter 10 across stent 18 or lesion 20 toward filter 16.
  • [0020]
    Distal protection filter 16 may be coupled to a generally metallic elongate shaft 38, for example proximate a distal end 40 thereof. When using catheter 10 to retrieve filter 16 from blood vessel 12, catheter 10 may pass over shaft 38 to a location proximate filter 16. According to this embodiment, at least a portion shaft 38 may extend through inner lumen 36.
  • [0021]
    Filter 16 and shaft 38 may generally comprise a number of configurations known to those skilled in the appropriate art. Filter 16 may be comprised of a polyurethane sheet and include at least one opening that may be, for example, formed by known laser techniques. The holes or openings are sized to allow blood flow therethrough but restrict flow of debris or emboli floating in the body lumen or cavity.
  • [0022]
    Filter 16 may be generally cone-shaped, and have a proximal and a distal end. The distal end may be a narrow, “V”-shaped end and can be fixedly secured or formed to shaft 38. The proximal end has a relatively wide opening. Alternatively, filter 16 may be cylindrical with a relatively rounded distal end.
  • [0023]
    Filter 16 operates between a closed collapsed profile and an open radially-expanded deployed profile for collecting debris in a body lumen. Filter 16 may include a collapsible proximally-tapered frame having a mouth and a plurality of longitudinally-extending ribs. In an expanded profile, the mouth is opened and the ribs extend radially outwardly to support the mouth. In an alternate embodiment, filter 16 may comprise a number of differing objects including, but not limited to, a filter, a basket, a filter basket, a sheath, a capture sheath, a capturing device, one or more struts, one or more ribs, a mesh, a net, an expandable object, a self-expanding object, and combinations thereof. A number of differing configurations of filter 16 may be substituted without departing from the spirit of the invention.
  • [0024]
    FIG. 2 is a cross-section of distal protection filter retrieval catheter 10 having tapered member 14 in a second position. The second position is understood to be tapered member 14 configured so that distal tip 44 may be disposed proximal to distal end 30 of outer tube 22. The second position may be the most appropriate position for retrieving filter 16. Accordingly, when tapered member 14 is in the second position, the inside diameter of tapered member may be sufficiently sized to accommodate filter 16 and allow removal thereof from blood vessel 12.
  • [0025]
    Inner tube 24 and outer tube 22 may be configured such that distal end 30 of outer tube 22 extends distally beyond distal end 34 of inner tube 24. The length that outer tube 22 extending distally of inner tube may be sized appropriated for having filter 16 disposed therein. Shifting tapered member 14 from the first position to the second position would shift the inside diameter of catheter 10 from that of tapered member 14 or inner tube 24 to that of the inside diameter of outer tube 22. Increasing the inside diameter of catheter 10 makes it possible for filter 16 to be disposed therein, either collapsed or partially collapsed.
  • [0026]
    To shift tapered member 14 between the first and the second positions, a clinician alters the fluid pressure or vent fluid from lumen 26. For example, a quantity of fluid may be disposed within lumen 26 that exerts a force upon tapered member 14 so as to hold it in the first position. With tapered member 14 in the first position, catheter 10 may be advanced across stent 18 or lesion 20. Once catheter is positioned across stent 18, the fluid can be vented from lumen 26. Venting fluid from lumen 26 will essentially remove the force exerted by the fluid on tapered member 14 and allow it to shift to the second position. The actual shift may occur by a number of mechanisms. For example, once catheter 10 encounters filter 16, proximal movement of filter 16 into catheter 10 may exert a force on tapered member 14 in the proximal direction and, thus, shift it into the second position.
  • [0027]
    Alternatively, tapered member 14 may be biased to be in the second position (e.g., by a spring, etc.). According to this embodiment, force exerted upon tapered member 14 by the fluid may be acting to overcome the bias and hold tapered member 14 in the first position. Venting the fluid would allow the bias in position of tapered member 14 to shift tapered member 14 to the second position.
  • [0028]
    FIG. 3 is a cross-section of an alternate distal protection filter retrieval catheter 110 having a tapered member 114 in a first position. Catheter 110 is essentially the same in form and function as catheter 10 except that tapered member 114 comprises a rolling membrane and that inner tube 124 and outer tube 122 are configured such that distal end 134 of inner tube 124 extends distally beyond distal end 130 of outer tube 122.
  • [0029]
    Tapered member 114 may be comprised of a polymer or combination of polymers extending between distal end 130 of outer tube 122 and distal end 134 of inner tube 124 and be generally tapered and having a relatively low profile. Tapered member 114 is in fluid communication with lumen 126. Similar to what is described above, lumen 126 may include a fluid or other means for exerting force onto tapered member 114. In alternate embodiments, tapered member 114 may be relatively inelastic or be elastic.
  • [0030]
    Similar to what is described above, tapered member 114 may be shifted between the first and the second positions by, for example, altering the fluid pressure, infusing fluid, or venting fluid from lumen 126. The first position of tapered member 114 is understood to be where at least a portion of tapered member 114 is disposed proximal to distal end 134 of inner tube 124. With tapered member 114 in the first position, catheter 110 may be advanced across stent 18 or lesion 20. Once catheter 110 is positioned across stent 18, the fluid can be infused into lumen 126. Infusing fluid into lumen 126 will exert a force on tapered member 114 and cause it to move or roll distally, and shift it to the second position.
  • [0031]
    FIG. 4 is a cross-section of distal protection filter retrieval catheter 110 having tapered member 114 in a second position. The second position is understood to be a configuration of tapered member 114 wherein at least a portion thereof extends distally of distal end 134 of inner tube 124. When tapered member 114 shifts from the first position to the second position, outer tube 122 may move distally relative to inner tube 124. This movement may be due to force exerted by the fluid onto tapered member 114 being transferred to outer tube 122. Alternatively, the position of outer tube 122 may be fixed relative to inner tube 124.
  • [0032]
    It can be appreciated that the first position of tapered member 114 would be the appropriate position for advancing tapered member 114 past lesion 20 or stent 18, and the second position is the position that would be appropriate for retrieving filter 16. According to this embodiment, the second position would configure catheter 110 with an inside diameter (e.g., the inside diameter defined by tapered member 114 or outer tube 122) that is sized for having filter 16 disposed therein.
  • [0033]
    It should be understood that this disclosure is, in many respects, only illustrative. Changes may be made in details, particularly in matters of shape, size, and arrangement of steps without exceeding the scope of the invention. The invention's scope is, of course, defined in the language in which the appended claims are expressed.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3472230 *Dec 19, 1966Oct 14, 1969Fogarty T JUmbrella catheter
US3952747 *Mar 28, 1974Apr 27, 1976Kimmell Jr Garman OFilter and filter insertion instrument
US3996938 *Jul 10, 1975Dec 14, 1976Clark Iii William TExpanding mesh catheter
US4425908 *Oct 22, 1981Jan 17, 1984Beth Israel HospitalBlood clot filter
US4643184 *Apr 17, 1984Feb 17, 1987Mobin Uddin KaziEmbolus trap
US4662885 *Sep 3, 1985May 5, 1987Becton, Dickinson And CompanyPercutaneously deliverable intravascular filter prosthesis
US4706671 *May 2, 1985Nov 17, 1987Weinrib Harry PCatheter with coiled tip
US4723549 *Sep 18, 1986Feb 9, 1988Wholey Mark HMethod and apparatus for dilating blood vessels
US4790812 *Nov 15, 1985Dec 13, 1988Hawkins Jr Irvin FApparatus and method for removing a target object from a body passsageway
US4790813 *May 30, 1986Dec 13, 1988Intravascular Surgical Instruments, Inc.Method and apparatus for surgically removing remote deposits
US4794928 *Jun 10, 1987Jan 3, 1989Kletschka Harold DAngioplasty device and method of using the same
US4857045 *Oct 23, 1987Aug 15, 1989Schneider (Usa) Inc., A Pfizer CompanyAtherectomy catheter
US4865030 *Jan 21, 1987Sep 12, 1989American Medical Systems, Inc.Apparatus for removal of objects from body passages
US4873978 *Dec 4, 1987Oct 17, 1989Robert GinsburgDevice and method for emboli retrieval
US4886061 *Feb 9, 1988Dec 12, 1989Medinnovations, Inc.Expandable pullback atherectomy catheter system
US4969891 *Apr 13, 1990Nov 13, 1990Gewertz Bruce LRemovable vascular filter
US5011488 *Aug 20, 1990Apr 30, 1991Robert GinsburgThrombus extraction system
US5071407 *Apr 12, 1990Dec 10, 1991Schneider (U.S.A.) Inc.Radially expandable fixation member
US5133733 *Oct 31, 1990Jul 28, 1992William Cook Europe A/SCollapsible filter for introduction in a blood vessel of a patient
US5160342 *Dec 30, 1991Nov 3, 1992Evi Corp.Endovascular filter and method for use thereof
US5192286 *Jul 26, 1991Mar 9, 1993Regents Of The University Of CaliforniaMethod and device for retrieving materials from body lumens
US5324304 *Jun 18, 1992Jun 28, 1994William Cook Europe A/SIntroduction catheter set for a collapsible self-expandable implant
US5329942 *Mar 20, 1992Jul 19, 1994Cook, IncorporatedMethod for filtering blood in a blood vessel of a patient
US5370657 *Mar 26, 1993Dec 6, 1994Scimed Life Systems, Inc.Recoverable thrombosis filter
US5415630 *Mar 9, 1994May 16, 1995Gory; PierreMethod for removably implanting a blood filter in a vein of the human body
US5419774 *Jul 13, 1993May 30, 1995Scimed Life Systems, Inc.Thrombus extraction device
US5462529 *Sep 29, 1993Oct 31, 1995Technology Development CenterAdjustable treatment chamber catheter
US5536242 *Oct 25, 1995Jul 16, 1996Scimed Life Systems, Inc.Intravascular device utilizing fluid to extract occlusive material
US5549626 *Dec 23, 1994Aug 27, 1996New York Society For The Ruptured And Crippled Maintaining The Hospital For Special SurgeryVena caval filter
US5662671 *Jul 17, 1996Sep 2, 1997Embol-X, Inc.Atherectomy device having trapping and excising means for removal of plaque from the aorta and other arteries
US5662703 *Sep 19, 1996Sep 2, 1997Schneider (Usa) Inc.Rolling membrane stent delivery device
US5669933 *Jul 17, 1996Sep 23, 1997Nitinol Medical Technologies, Inc.Removable embolus blood clot filter
US5769816 *Apr 30, 1996Jun 23, 1998Embol-X, Inc.Cannula with associated filter
US5779716 *Oct 6, 1995Jul 14, 1998Metamorphic Surgical Devices, Inc.Device for removing solid objects from body canals, cavities and organs
US5800457 *Mar 5, 1997Sep 1, 1998Gelbfish; Gary A.Intravascular filter and associated methodology
US5800525 *Jun 4, 1997Sep 1, 1998Vascular Science, Inc.Blood filter
US5807398 *Apr 28, 1995Sep 15, 1998Shaknovich; AlexanderShuttle stent delivery catheter
US5814064 *Mar 6, 1997Sep 29, 1998Scimed Life Systems, Inc.Distal protection device
US5833650 *Jun 5, 1995Nov 10, 1998Percusurge, Inc.Catheter apparatus and method for treating occluded vessels
US5848964 *Jun 6, 1997Dec 15, 1998Samuels; Shaun Lawrence WilkieTemporary inflatable filter device and method of use
US5868753 *Nov 13, 1995Feb 9, 1999Schatz; Richard A.Stent retrieval catheter
US5911734 *May 8, 1997Jun 15, 1999Embol-X, Inc.Percutaneous catheter and guidewire having filter and medical device deployment capabilities
US6066149 *Sep 30, 1997May 23, 2000Target Therapeutics, Inc.Mechanical clot treatment device with distal filter
US6066158 *Jul 25, 1996May 23, 2000Target Therapeutics, Inc.Mechanical clot encasing and removal wire
US6142987 *Aug 3, 1999Nov 7, 2000Scimed Life Systems, Inc.Guided filter with support wire and methods of use
US6152946 *Mar 5, 1998Nov 28, 2000Scimed Life Systems, Inc.Distal protection device and method
US6168579 *Aug 4, 1999Jan 2, 2001Scimed Life Systems, Inc.Filter flush system and methods of use
US6171327 *Feb 24, 1999Jan 9, 2001Scimed Life Systems, Inc.Intravascular filter and method
US6203561 *Dec 23, 1999Mar 20, 2001Incept LlcIntegrated vascular device having thrombectomy element and vascular filter and methods of use
US6206868 *Jun 14, 1999Mar 27, 2001Arteria Medical Science, Inc.Protective device and method against embolization during treatment of carotid artery disease
US6221006 *Feb 9, 1999Apr 24, 2001Artemis Medical Inc.Entrapping apparatus and method for use
US6277139 *Mar 31, 2000Aug 21, 2001Scion Cardio-Vascular, Inc.Vascular protection and embolic material retriever
US6346116 *Aug 3, 1999Feb 12, 2002Medtronic Ave, Inc.Distal protection device
US6544278 *Nov 10, 2000Apr 8, 2003Scimed Life Systems, Inc.Rolling membrane stent delivery system
US6554280 *Mar 12, 2002Apr 29, 2003Michael Clyde MazzolaAnt board game featuring ant cave and tunnel
US6569181 *Dec 20, 2000May 27, 2003Advanced Cardiovascular Systems, Inc.Stent retrieval system
US6616681 *Mar 7, 2001Sep 9, 2003Scimed Life Systems, Inc.Filter delivery and retrieval device
US6620148 *Sep 29, 2000Sep 16, 2003Scimed Life Systems, Inc.Filter flush system and methods of use
US6979343 *Feb 12, 2002Dec 27, 2005Ev3 Inc.Rolled tip recovery catheter
US20020058963 *Jan 14, 2002May 16, 2002Salviac LimitedRetrieval device
US20030125751 *Jun 27, 2002Jul 3, 2003Patrick GriffinCatheter
US20030125764 *Jun 27, 2002Jul 3, 2003Eamon BradyCatheter
US20030187474 *Mar 5, 2003Oct 2, 2003Martin KeeganEmbolic protection system
US20030212429 *Mar 5, 2003Nov 13, 2003Martin KeeganEmbolic protection system
US20040019363 *Jul 17, 2003Jan 29, 2004Scimed Life Systems, Inc.Filter delivery and retrieval device
US20040044359 *Sep 4, 2002Mar 4, 2004Incept LlcSheath tip
US20040049226 *Mar 5, 2003Mar 11, 2004Martin KeeganEmbolic protection system
US20040127934 *Mar 26, 2003Jul 1, 2004Salviac LimitedEmbolic protection system
US20050027345 *Feb 17, 2004Feb 3, 2005Steven HoranStent delivery and deployment system
US20050049610 *Sep 2, 2004Mar 3, 2005Ling WangEmbolic protection device
US20050090857 *Nov 16, 2004Apr 28, 2005Ev3 Inc.Minimally invasive medical device deployment and retrieval system
US20050182439 *Feb 13, 2004Aug 18, 2005Scimed Life Systems, IncCentering intravascular filters and devices and methods for deploying and retrieving intravascular filters
US20060025805 *Sep 30, 2005Feb 2, 2006Dobrava Eric MFilter retrieval catheter
US20060025854 *May 5, 2005Feb 2, 2006Lashinski Randall TTranslumenally implantable heart valve with formed in place support
US20060190024 *Feb 24, 2005Aug 24, 2006Bei NianjiongRecovery catheter apparatus and method
US20060247676 *Jun 27, 2006Nov 2, 2006Salviac LimitedRetrieval device
US20060287669 *Dec 21, 2005Dec 21, 2006Salviac LimitedCatheter
US20060287671 *Aug 24, 2006Dec 21, 2006Boston Scientific Scimed, Inc.Sheath tip
US20060293696 *Apr 18, 2006Dec 28, 2006Salviac LimitedRetrieval catheter
US20070005096 *Jun 1, 2005Jan 4, 2007Salviac LimitedEmbolic protection system
US20070027520 *Jul 27, 2005Feb 1, 2007Sherburne Paul SStent removal from a body
US20070032809 *Sep 25, 2006Feb 8, 2007Scimed Life Systems, Inc.Steerable sphincterotome and methods for cannulation, papillotomy and sphincterotomy
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8202309 *May 15, 2006Jun 19, 2012Laboratoires PerouseKit for inserting a cavity-treatment element and method for preparing an associated treatment element
US20080215557 *Oct 30, 2007Sep 4, 2008Jorey RamerMethods and systems of mobile query classification
US20090299449 *May 15, 2006Dec 3, 2009Mikolaj Witold StyrcKit for inserting a cavity-treatment element and method for preparing an associated treatment element
Classifications
U.S. Classification606/200
International ClassificationA61M29/00, A61F2/01
Cooperative ClassificationA61F2002/018, A61F2230/005, A61F2/013, A61F2230/0067
European ClassificationA61F2/01D