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公开(公告)号：US09987463B2
公开(公告)日：2018-06-05
申请号：US15140750
申请日：2016-04-28
Inventor： Xiaoping Guo , Richard E. Stehr
IPC: A61M25/00 , B29C61/00 , B29D23/00 , A61M25/01 , B29C47/02 , B29C63/00 , B29L31/00 , B29K27/18 , B29K105/16
CPC classification number: A61M25/005 , A61M25/0009 , A61M25/0012 , A61M25/0043 , A61M25/0045 , A61M25/0108 , A61M2025/0059 , A61M2205/32 , B29C47/021 , B29C61/006 , B29C63/0069 , B29D23/001 , B29K2027/18 , B29K2105/16 , B29L2031/7542
Abstract: A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.
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公开(公告)号：US09962224B2
公开(公告)日：2018-05-08
申请号：US15390048
申请日：2016-12-23
Inventor： Carlo Pappone , Alan de la Rama , Peter Chen , Cary Hata
CPC classification number: A61B18/1492 , A61B5/04 , A61B18/18 , A61B2018/00011 , A61B2018/00101 , A61B2018/00214 , A61B2018/00577 , A61B2018/00898 , A61B2218/002 , A61M25/003 , A61M25/0068 , A61M25/0069 , A61M25/007 , A61M25/0071 , A61M25/0082 , A61M25/10 , A61M25/1011 , A61M2025/0034 , A61M2025/0073 , A61M2025/1047
Abstract: An irrigated catheter with uniform cooling and/or uniform fluid distribution in longitudinally spaced apart elution holes by varying the diameter of a fluid delivery lumen. A number of elution holes are provided in a tip region of a catheter body, and these elution holes are in fluid communication with the lumen through ducts. The fluid delivery lumen may be provided with a flow constrictor to restrict flow of fluid towards the distal region.
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公开(公告)号：US09950141B2
公开(公告)日：2018-04-24
申请号：US14825946
申请日：2015-08-13
Inventor： Allan Fuentes
CPC classification number: A61M25/0147 , A61M25/0012 , A61M25/0045 , A61M25/005 , A61M25/0052 , A61M25/0053
Abstract: A dual braided catheter shaft includes an inner helical braid and outer helical braid than encapsulate an axially extending steering wire there between. In one embodiment, the shaft includes an inner polymer jacket, an inner braid formed on the inner jacket, a steering wire disposed along an outside surface of the inner braid, an outer braid formed over the inner braid and steering wire assembly and an outer jacket formed on the outer braid. The braiding parameters of the inner and outer braids can be varied along the length of the catheter to provide varying mechanical properties.
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44.发明授权公开(公告)号：US09931440B2
公开(公告)日：2018-04-03
申请号：US15594165
申请日：2017-05-12
Inventor： Xiaoping Guo , Richard E. Stehr
CPC classification number: A61L29/049 , A61M25/00 , A61M25/0021 , A61M2025/0048 , A61M2025/006 , A61M2025/0062 , C08L83/04
Abstract: The invention comprises self-lubricating polymer compositions that are especially useful in medical devices and valves and gaskets of medical devices. In a preferred embodiment, the polymer compositions comprise a thermosetting or thermoplastic silicone elastomer in combination with a lubricity enhancing polyfluoropolyether fluid or hydrocarbon-based synthetic oil. In other preferred embodiments, the polymer compositions contain only biocompatible components. The improved anti-friction properties of the self-lubricating polymers can be demonstrated over a course of insertion and withdrawal cycles, where conventional polymers have changing and mostly increasing force required for each insertion and withdrawal, while the polymer compositions of the invention remain stable.
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公开(公告)号：US20180071018A1
公开(公告)日：2018-03-15
申请号：US15709287
申请日：2017-09-19
Inventor： Steven C. Christian , Reed R. Heimbecher
CPC classification number: A61B18/1492 , A61B2018/00101 , A61B2018/00714 , A61B2018/00791 , A61B2218/002
Abstract: Ablation electrode assemblies include an inner core member and an outer shell surrounding the inner core member. The inner core member and the outer shell define a space or separation region therebetween. The inner core member is constructed from a thermally insulative material having a reduced thermal conductivity. In an embodiment, the space is a sealed or evacuated region. In other embodiments, irrigation fluid flows within the space. The ablation electrode assembly further includes at least one thermal sensor in some embodiments. Methods for providing irrigation fluid during cardiac ablation of targeted tissue are disclosed that include calculating the energy delivered to irrigation fluid as it flows within the ablation electrode assembly through temperature measurement of the irrigation fluid. Pulsatile flow of irrigation fluid can be utilized in some embodiments of the disclosure.
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Patent Agency Ranking
公开(公告)号：US20180064910A1
公开(公告)日：2018-03-08
申请号：US15682285
申请日：2017-08-21
Inventor： Troy T. Tegg
IPC: A61M25/01
CPC classification number: A61M25/0147 , A61B5/042 , A61B2017/00318 , A61B2017/00327 , A61M25/0136
Abstract: An apparatus for deflecting a distal portion of a catheter, a sheath, a medical device, or other flexible elongate member may generally include a handle portion, a pair of adjusting knobs, and deflection wires. The adjusting knobs may be rotatably coupled to the handle portion and operably coupled to the deflection wires. The deflection wires may be in further communication with the distal portion of the flexible elongate member. Rotation of the adjustment knobs may translate or otherwise displace particular deflection wires with respect to the rest of the flexible elongate member, thereby causing the distal portion of the flexible elongate member to deflect. Further, the deflection wires may be oriented such that the distal portion of the flexible elongate member may be deflected in a multitude of directions.
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公开(公告)号：US09901397B2
公开(公告)日：2018-02-27
申请号：US14326823
申请日：2014-07-09
Inventor： Steven C. Christian
CPC classification number: A61B18/1492 , A61B18/02 , A61B2018/00029 , A61B2018/00083 , A61B2018/00714 , A61B2018/00791 , A61B2018/00815 , A61B2018/00821 , A61B2018/00863 , A61B2018/00875 , A61B2217/007 , A61B2218/002
Abstract: An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented.
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公开(公告)号：US20170354797A1
公开(公告)日：2017-12-14
申请号：US15639981
申请日：2017-06-30
Inventor： Alan de la Rama , Cary Hata , William Du , Yongxing Zhang
CPC classification number: A61M25/007 , A61B5/04 , A61B18/1492 , A61B2018/00011 , A61B2018/00101 , A61B2018/00577 , A61B2018/00821 , A61B2018/00839 , A61B2018/1465 , A61B2218/002 , A61M25/0026 , A61M25/0074 , A61M25/008 , A61M25/0082 , A61M2025/1047
Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
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49.发明申请公开(公告)号：US20170321054A1
公开(公告)日：2017-11-09
申请号：US15602979
申请日：2017-05-23
Inventor： Xiaoping Guo , David P. Johnson , Richard E. Stehr
CPC classification number: C08L69/00 , C08G69/40 , C08K5/353 , C08L33/10 , C08L77/02 , C08L77/06 , C08L77/10 , C08L2666/20
Abstract: The invention relates to biocompatible polycarbonate/polyamide polymer compositions for use in medical and surgical devices. Additional additives, crosslinking agents, phosphites, and optionally a radiopaque filler or fillers can be used to produce the high performance compositions desired. The polymer compositions have improved melt processability along with balanced or enhanced physical and mechanical properties, especially when combined or over-extruded onto or covering other polymer layers, such as soft and/or flexible layers commonly used in medical device applications and catheter tips, for example. The ability to incorporate radiopaque compounds into these polymer compositions during melt processing offers improved methods for monitoring and visualizing medical devices when used inside the body and as well as improving the operating characteristics of the medical device components
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公开(公告)号：US20170312482A1
公开(公告)日：2017-11-02
申请号：US15615255
申请日：2017-06-06
Inventor： Clint Schneider , Joshua L. Dudney , Richard E. Stehr , Troy T. Tegg , Michael C. Bednarek , Guy P. Vanney , James A. Jensen , Michael W. Stine
IPC: A61M25/01
Abstract: The present invention is a catheter actuation handle for deflecting a distal end of a tubular catheter body, the handle including an auto-locking mechanism. The handle comprises upper and lower grip portions, an actuator, and an auto-locking mechanism. The auto-locking mechanism is adapted to hold a deflected distal end of the catheter in place without input from the operator. When the distal end of the catheter is deflected from its zero position, it typically will seek a return to its zero position, and as a result exerts a force on the actuator. The auto-locking mechanism acts by providing a second force that resists this force from the distal end and holds the distal end in place. As a result, the operator does not need to maintain contact with the buttons to maintain the distal end 18 in a set position once placed there by actuating the actuator.
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