Patents by Inventor Scott E. Boatman
Scott E. Boatman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20100036314Abstract: In at least one embodiment of the present invention a balloon catheter is provided. The balloon catheter comprises a shaft having a lumen formed therethrough. Connected to the shaft is an inflatable balloon. The inflatable balloon has a balloon wall defining a balloon interior surface and a balloon exterior surface that is opposite the interior surface. In fluid communication with the balloon wall is the lumen for inflating the balloon to define an inflated state and for collapsing the balloon to define a deflated state. The balloon wall is textured in the deflated state such that the balloon interior surface is spatially registered with the balloon exterior surface. The balloon in the inflated state is tensioned to have a surface roughness substantially less than a surface roughness of the balloon in the deflated state.Type: ApplicationFiled: July 23, 2009Publication date: February 11, 2010Applicant: COOK INCORPORATEDInventors: David G. Burton, Thomas Lysgaard, Steen Aggerholm, Scott E. Boatman
-
Publication number: 20090254064Abstract: Multiple-balloon catheters, and methods of treatment therewith, are provided including an inflatable inner balloon at least partially enclosed by an expandable outer balloon that has holes. The annular space between the inner balloon and the outer balloon is configured to promote delivery of the fluid evenly through holes in the outer balloon to avoid problems of underloading and/or overloading. Preferably, the annular space is in communication with the holes, and the annular space is configured to receive and then to release and distribute the fluid via the holes in a substantially uniform manner such that even amounts of fluid are released in the distal and proximal holes. The inner balloon may have various configurations including being tapered relative to the outer balloon. The outer balloon may also be tapered accordingly. The device may also include raised portions disposed in the annular space and configured to define channels having various configurations.Type: ApplicationFiled: March 25, 2009Publication date: October 8, 2009Applicant: Cook IncorporatedInventor: Scott E. Boatman
-
Patent number: 7485250Abstract: A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide. Irradiation is carried out by exposure to an electron beam or to ultraviolet, X- or gamma radiation, preferably at a total fluence of about 0.5 to about 20 megarads.Type: GrantFiled: June 16, 2003Date of Patent: February 3, 2009Assignee: Cook IncorporatedInventors: Scott E. Boatman, David G. Burton, Michael C. Hoffa, David R. Lessard, David A. Drewes, Jr., Maggie A. Z. Hupcey
-
Patent number: 7056337Abstract: A medical implant made from multiple layers of non-synthetic, natural tissues is provided. The medical device includes openings that extend radially through the wall of the medical implant. One advantage of the medical implant is that a synthetic support structure is not needed. As a result, problems associated with implanting a foreign material into a body may be avoided.Type: GrantFiled: October 21, 2003Date of Patent: June 6, 2006Assignee: Cook IncorporatedInventor: Scott E. Boatman
-
Patent number: 6881209Abstract: A medical device (110) including a catheter shaft (111) and a unitarily and continuously formed portion (108) having a varying durometer, and optionally including an expandable balloon (18, 118). One or both of the unitarily and continuously formed portion (108) and the balloon (18, 118) are made from an irradiation cross-linked or cross-linkable mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The aromatic molecule can be 1,3,5 triethyl benzene; 1,2,4 triethyl benzene; and 1,3,5 triisopropyl benzene. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein.Type: GrantFiled: May 3, 2001Date of Patent: April 19, 2005Assignee: Cook IncorporatedInventors: Scott E. Boatman, David G. Burton, Michael C. Hoffa, Thomas A. Osborne, David A. Drewes, Jr., David R. Lessard, Maggie A. Z. Hupcey
-
Publication number: 20040073164Abstract: A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide. Irradiation is carried out by exposure to an electron beam or to ultraviolet, X- or gamma radiation, preferably at a total fluence of about 0.5 to about 20 megarads.Type: ApplicationFiled: June 16, 2003Publication date: April 15, 2004Applicants: Cook Incorporated, Sabin CorporationInventors: Scott E. Boatman, David G. Burton, Michael C. Hoffa, David R. Lessard, David A. Drewes, Maggie A.Z. Hupcey
-
Publication number: 20040073284Abstract: A coated medical device (10) including a structure (12) adapted for introduction into a passage or vessel of a patient. The structure is formed of preferably a non-porous base material (14) having a bioactive material layer (18) disposed thereon. The medical device is preferably an implantable stent or balloon (26) of which the bioactive material layer is deposited thereon. The stent can be positioned around the balloon and another layer of the bioactive material posited over the entire structure and extending beyond the ends of the positioned stent. The ends of the balloon extend beyond the ends of the stent and include the bioactive material thereon for delivering the bioactive material to the cells of a vessel wall coming in contact therewith. The balloon further includes a layer of hydrophilic material (58) positioned between the base and bioactive material layers of the balloon.Type: ApplicationFiled: July 14, 2003Publication date: April 15, 2004Applicants: Cook Incorporated, MED Institute, Inc., WILLIAM COOK EUROPE ApSInventors: Brian L. Bates, Scott E. Boatman, David G. Burton, Michael C. Hoffa, Darin G. Schaeffer, Jason S. Sturgeon, Anthony O. Ragheb
-
Publication number: 20030195490Abstract: A medical device (110) including a catheter shaft (111) and a unitarily and continuously formed portion (108) having a varying durometer, and optionally including an expandable balloon (18, 118). One or both of the unitarily and continuously formed portion (108) and the balloon (18, 118) are made from an irradiation cross-linked or cross-linkable mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The aromatic molecule can be 1,3,5 triethyl benzene; 1,2,4 triethyl benzene; and 1,3,5 triisopropyl benzene. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein.Type: ApplicationFiled: May 3, 2001Publication date: October 16, 2003Applicant: Cook IncorporatedInventors: Scott E. Boatman, David G. Burton, Michael C. Hoffa, Thomas A. Osborne, David A. Drewes,, David R. Lessard, Maggie A.Z. Hupcey
-
Patent number: 6592550Abstract: A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide. Irradiation is carried out by exposure to an electron beam or to ultraviolet, X- or gamma radiation, preferably at a total fluence of about 0.5 to about 20 megarads.Type: GrantFiled: September 15, 2000Date of Patent: July 15, 2003Assignees: Cook Incorporated, Sabin CorporationInventors: Scott E. Boatman, David G. Burton, Michael C. Hoffa, David R. Lessard, David A. Drewes, Jr., Maggie A. Z. Hupcey
-
Patent number: 6464720Abstract: A radially expandable stent (10) made from a cannula or sheet of biocompatible material that includes at least one longitudinal segment (14) comprised of a series of laterally interconnected closed cells (13). Each closed cell of a longitudinal segment is defined laterally by a pair of longitudinal struts (15, 16) that are interconnected at each end by a circumferentially adjustable member (19, 20). When the stent is expanded using a balloon (47), the opposing circumferentially adjustable members deform to allow circumferential expansion of the longitudinal segment, while the length of the segment, as defined by the longitudinal struts, is maintained. Self-expanding versions of the stent utilize a nickel-titanium alloy. Adjacent longitudinal segments are joined by flexible interconnection segments (21) that permit the stent to bend laterally. The flexible interconnection segment is comprised of curvilinear struts (22, 23) that form a series of serpentine bends (81) that distribute lateral bending forces.Type: GrantFiled: March 30, 2001Date of Patent: October 15, 2002Assignee: Cook IncorporatedInventors: Scott E. Boatman, Kimberly D. Brummett, Thomas A. Osborne
-
Patent number: 6447540Abstract: A stent deployment device (10) includes a catheter (12), a stent (14) positioned on the catheter (12), and a sleeve (16) carried on the catheter (12). The sleeve (16) has a portion (18) extending fully over and containing the stent (14). The stent deployment device (10) also includes a mechanism (20) for splitting at least the portion (18) of the sleeve (16) extending over the stent (14) and, preferably, for splitting the entire sleeve (16). Splitting of the sleeve portion (18) permits expansion of the stent (14). The mechanism (20) can include an inflatable, nondistending balloon (22) carried on the catheter (12), the stent (14) and the sleeve portion (18) being positioned over the balloon (22). The stent (14) can be self-expanding or can be expanded by the balloon (22) itself. Alternatively, the mechanism (20) can include a bulbous end (24) on the catheter (12).Type: GrantFiled: November 14, 1997Date of Patent: September 10, 2002Assignee: Cook IncorporatedInventors: Arthur B. Fontaine, Susan DosPassos, Brian L. Bates, Scott E. Boatman, Michael C. Hoffa, Thomas A. Osborne
-
Patent number: 6409752Abstract: A flexible stent having a waveform pattern formed from a sheet of biocompatible material and into a tubular shape for maintaining the patency of a lumen such as in a coronary vessel. The waveform pattern of the stent is formed from a flat sheet of malleable, biocompatible material by, for example, photochemically etching the sheet and leaving a framework or plurality of closed cells. The waveform pattern is formed into a tubular shape around a deflated, delivery catheter balloon with segments of the closed cells being interposed only overlapping a reinforcing member extending longitudinally along the stent. The stent material is treated to reduce the coefficient of friction of the material and to aid in the radial expansion of the stent with the balloon. Radiopaque markers are positioned at the ends of the stent to aid the physician in positioning the stent at an occlusion site.Type: GrantFiled: November 13, 1996Date of Patent: June 25, 2002Assignee: Cook IncorporatedInventors: Scott E. Boatman, Kimberly D. Brummett
-
Publication number: 20010027339Abstract: A radially expandable stent (10) made from a cannula or sheet of biocompatible material that includes at least one longitudinal segment (14) comprised of a series of laterally interconnected closed cells (13). Each closed cell of a longitudinal segment is defined laterally by a pair of longitudinal struts (15, 16) that are interconnected at each end by a circumferentially adjustable member (19, 20). When the stent is expanded using a balloon (47), the opposing circumferentially adjustable members deform to allow circumferential expansion of the longitudinal segment, while the length of the segment, as defined by the longitudinal struts, is maintained. Self-expanding versions of the stent utilize a nickel-titanium alloy. Adjacent longitudinal segments are joined by flexible interconnection segments (21) that permit the stent to bend laterally. The flexible interconnection segment is comprised of curvilinear struts (22, 23) that form a series of serpentine bends (81) that distribute lateral bending forces.Type: ApplicationFiled: March 30, 2001Publication date: October 4, 2001Inventors: Scott E. Boatman, Kimberly D. Brummett, Thomas A. Osborne
-
Patent number: 6231598Abstract: A radially expandable stent (10) made from a cannula or sheet of biocompatible material that includes at least one longitudinal segment (14) comprised of a series of laterally interconnected closed cells (13). Each closed cell of a longitudinal segment is defined laterally by a pair of longitudinal struts (15, 16) that are interconnected at each end by a circumferentially adjustable member (19, 20). When the stent is expanded using a balloon (47), the opposing circumferentially adjustable members deform to allow circumferential expansion of the longitudinal segment, while the length of the segment, as defined by the longitudinal struts, is maintained. Self-expanding versions of the stent utilize a nickel-titanium alloy. Adjacent longitudinal segments are joined by flexible interconnection segments (21) that permit the stent to bend laterally. The flexible interconnection segment is comprised of curvilinear struts (22, 23) that form a series of serpentine bends (81) that distribute lateral bending forces.Type: GrantFiled: September 24, 1998Date of Patent: May 15, 2001Assignees: MED Institute, Inc., Cook IncorporatedInventors: Dale T. Berry, Coy M. Herald, Brian L. Bates, Scott E. Boatman, Michael C. Hoffa, Neal E. Fearnot, William D. Voorhees, III
-
Patent number: 5707376Abstract: An introducer (10) method of percutaneously deploying a self-expanding stent (14) in a body vessel or duct (43). The stent introducer includes an outer elongated member tube (11) having a passage (12) extending longitudinally therein and operable in a first direction (13) for deploying the self-expanding stent in a collapsed condition from the outer member passage. An inner elongated member (15) is positioned in the outer member passage and is operable in a second direction (16) for deploying the stent from the outer member passage. An interconnection mechanism (17) is connected to the outer and inner members for operation thereof, whereby a stent in a collapsed condition is deployed from the outer member passage to an expanded condition. When deployed, the expanded portion of the stent remains fixedly positioned longitudinally in the body vessel or duct as the remaining portion is deployed from the outer member passage.Type: GrantFiled: June 7, 1995Date of Patent: January 13, 1998Assignees: William Cook Europe A/S, Cook IncorporatedInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Scott E. Boatman
-
Patent number: 5632771Abstract: A flexible stent having a waveform pattern formed from a sheet of biocompatible material and into a tubular shape for maintaining the patency of a lumen such as in a coronary vessel. The waveform pattern of the stent is formed from a flat sheet of malleable, biocompatible material by, for example, photochemically etching the sheet and leaving a framework or plurality of closed cells. The waveform pattern is formed into a tubular shape around a deflated, delivery catheter balloon with segments of the closed cells being interposed only overlapping a reinforcing member extending longitudinally along the stent. The stent material is treated to reduce the coefficient of friction of the material and to aid in the radial expansion of the stent with the balloon. Radiopaque markers are positioned at the ends of the stent to aid the physician in positioning the stent at an occlusion site.Type: GrantFiled: January 25, 1995Date of Patent: May 27, 1997Assignee: Cook IncorporatedInventors: Scott E. Boatman, Kimberly D. Brummett
-
Patent number: 5064428Abstract: A stone retrieval basket having superelastic metallic alloy wires attached to the distal end of an inner elongaged member tube for retrieving calculi and crushing them against an outer introducer tube percutaneously inserted into a patient. The basket comprises kink-resistant superelastic metallic alloy wires such as nitinol forming a bulbous shape for capturing calculi therein. The ends of the superelastic wires of the basket are attached to the distal end of a inner elongated member tube with the aid of sleeves crimped thereon, which are soldered or spot welded in recesses about the distal end of the inner tube. The outer tube is percutaneously inserted into the biliary or urinary system in which the basket is then inserted to capture large-sized stones. A peel-away sheath is also included to introduce the basket and inner elongatged member tube into the outer introducer tube.Type: GrantFiled: September 18, 1990Date of Patent: November 12, 1991Assignee: Cook IncorporatedInventors: Constantin Cope, Scott E. Boatman, Joseph W. Roberts
-
Patent number: 5057114Abstract: A medical retrieval basket having superelastic metallic alloy wires attached to the distal end of an inner elongated member tube for percutaneously capturing and removing calculi from a cavity or duct of a patient. The basket comprises kink-resistant superelastic metallic alloy wires such as nitinol which forms a bulbous shape for capturing calculi therein. The ends of the superelastic wires of the basket extend through the passageway of the inner elongated member tube and are attached to the proximal end of the tube. An outer elongated member tube is percutaneously inserted into the biliary or urinary system. The inner member tube is inserted through the outer member tube into a duct, cavity or organ of the patient. The distal ends of both the inner and outer member tubes have a predetermined longitudinal curvature for controlling the positioning of the basket and the tubes within the patient.Type: GrantFiled: September 18, 1990Date of Patent: October 15, 1991Assignee: Cook IncorporatedInventors: Gerhard R. Wittich, Scott E. Boatman, Joseph W. Roberts
-
Patent number: D380266Type: GrantFiled: December 30, 1994Date of Patent: June 24, 1997Assignee: Cook IncorporatedInventors: Scott E. Boatman, Michael C. Hoffa