Patents by Inventor Dale Nelson
Dale Nelson 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).
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Patent number: 7520869Abstract: A self-suturing anchor device includes a base having a securement mechanism. The securement mechanism includes one or more resilient pockets in which are placed a plurality of looped sutures. The securement mechanism and looped sutures facilitate automatic securement of a catheter relative to the self-suturing anchor device. In at least one embodiment, the looped sutures are also threaded through loops in another corresponding looped suture, such that each looped sutures slidably tighten in concert with one another. When at least a portion of the securement mechanism is moved, at least one of the plurality of looped sutures is tensioned and closes against a securement point on the catheter. A catheter can be secured in a self-suturing anchor device in a quick and efficient manner with minimal effort.Type: GrantFiled: March 16, 2005Date of Patent: April 21, 2009Assignee: Merit Medical Systems, Inc.Inventors: Fred P. Lampropoulos, Arlin Dale Nelson, Darryl Kent Bachman, Gregory R. McArthur, Thomas D. Stout, Brian Stevens
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Patent number: 7470256Abstract: A self-suturing anchor device includes rotatable ring adapted to automatically deploy sutures to secure a catheter. The rotatable ring is utilized in connection with a ratchet mechanism which allows movement of the rotatable ring in a first direction while preventing movement of the rotatable ring in the opposite direction. The rotatable ring is also utilized in connection with a bearing member to facilitate smooth and efficient rotation of the rotatable ring. An extension saddle is utilized to provide a desired amount of displacement between suture securement points to minimize pivotal movement of the catheter. The rotatable ring is wider than its height to minimize kinking of the catheter tube and to relieve pressure when pressed between the patient and a support surface. In another embodiment, a plurality of scallops or other gripping members are utilized to facilitate easy gripping and rotation of the rotatable ring.Type: GrantFiled: August 5, 2005Date of Patent: December 30, 2008Assignee: Merit Medical Systems, Inc.,Inventors: Fred P. Lampropoulos, Arlin Dale Nelson, D. Kent Backman, Gregory R. McArthur, Thomas D. Stout, Brian Stevens
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Publication number: 20080200947Abstract: A distal protection device for use in a body lumen. The device includes a functional element which may be a filter or an occlusive element. The device includes means for controlling the movement and placement of the functional element along a guidewire. Motion of the guidewire can be independent of the motion of the functional element.Type: ApplicationFiled: April 30, 2008Publication date: August 21, 2008Applicant: EV3 INC.Inventors: Richard S. Kusleika, Daniel O. Adams, Kent D. Anderson, Dale Nelson, Jeffrey D. Santer
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Publication number: 20080183163Abstract: The present invention relates to medical treatment devices. In particular, according to one embodiment, the present invention a medical treatment device that includes, for example, a tube member, a treatment member by way of which energy can be transmitted in connection with performance of a medical procedure, a sleeve, and a hub member. In this example, the treatment member is positioned within the tube member and the tube member thus affords a degree or protection to the treatment member. The combination of the treatment member and the tube member is configured to be partially received within, and secured by, the hub member.Type: ApplicationFiled: January 30, 2007Publication date: July 31, 2008Inventors: Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson
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Patent number: 7384424Abstract: A distal protection device for use in a body lumen. The device includes a functional element which may be a filter or an occlusive element. The device includes means for controlling the movement and placement of the functional element along a guidewire. Motion of the guidewire can be independent of the motion of the functional element.Type: GrantFiled: August 10, 2004Date of Patent: June 10, 2008Assignee: ev3 Inc.Inventors: Richard S. Kusleika, Daniel Adams, Kent D. Anderson, Dale Nelson, Jeffrey D. Santer
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Publication number: 20070265658Abstract: A method and apparatus for providing safe and efficient transcatheter correction of the shape of heart chambers, valves, or other body members. The apparatus generally performs this correction by securing a tether to body surfaces. The attachment device includes an anchor comprising a wire braid and at least one clamp affixed to and constraining a portion of the wire braid, the clamp having threading for temporarily coupling the anchor to a delivery member and an internal lumen through which the tether can pass. The device also includes a locking member cooperating with the lumen to lock the tether to the clamp at a preselected position along the length of the tether.Type: ApplicationFiled: May 12, 2006Publication date: November 15, 2007Applicant: AGA Medical CorporationInventors: Dale Nelson, Xiaoping Gu, Kent Anderson
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Publication number: 20070194815Abstract: A buffer circuit includes an input stage including at least one MOS device having a first threshold voltage associated therewith, the input stage being adapted to receive an input signal referenced to a first voltage supply. The buffer circuit further includes an output stage including at least one MOS transistor having the first threshold voltage associated therewith, an input of the output stage being connected to an output of the input stage, the output stage being operative to generate an output signal which is indicative of a logic state of the input signal. The buffer circuit includes a delay control circuit adapted for connection between at least one of the first voltage supply and a voltage return of the buffer circuit, and at least one of the input stage and the output stage. The delay control circuit includes at least one MOS device having a second threshold voltage associated therewith.Type: ApplicationFiled: February 23, 2006Publication date: August 23, 2007Inventor: Dale Nelson
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Publication number: 20060284693Abstract: This disclosure relates to a cell-placeable variable-frequency digitally controlled oscillator (DCO) that consumes approximately the same current in a fast process corner as in the case of a slow process corner. By modulating the effective channel length of transistors in inverters, a fast process DCO may be slowed down to a desired frequency at nearly the same current consumption as that of a slow process DCO.Type: ApplicationFiled: June 18, 2005Publication date: December 21, 2006Inventor: Dale Nelson
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Publication number: 20060238226Abstract: A baseband clock synthesizer having particular use in a BLUETOOTH piconet device, having the capability of generating either 12 MHz or 13 MHz clock signals generated from any reference clock signal, e.g., 12.00, 12.80, 13.00, 15.36, 16.80, 19.20, 19.44, 19.68, 19.80, and 26.00 MHz. A fractional-N frequency divider is implemented with a PLL including a variable divider allowing the use of virtually any reference frequency input to generate a locked 156 MHz clock signal used as a basis for a 12 MHz or 13 MHz baseband clock signal. A residue feedback sigma-delta modulator provides a varying integer sequence to an integer divider in a feedback path of the PLL, effectively allowing division by non-integer numbers in the PLL. Thus, the PLL can be referenced to virtually any reference clock and still provide a fixed output clock signal (e.g., 12 or 13 MHz).Type: ApplicationFiled: April 20, 2005Publication date: October 26, 2006Inventors: William Holland, Wenzhe Luo, Zhigang Ma, Dale Nelson, Harold Simmonds, Lizhong Sun, Xiangqun Sun
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Publication number: 20060215798Abstract: A signal generator circuit having enhanced control resolution includes a variable frequency oscillator having a first control input adapted to receive a first signal and at least a second control input adapted to receive a second signal. The second signal is afforded a weight which is substantially equal to a weight of a least significant bit of the first signal. The variable frequency oscillator is operative to generate an output signal having a frequency which varies as a function of the first and second signals. The signal generator circuit further includes a first counter, a first divider and a modulation circuit. The first counter is configurable for generating an output count based at least in part on a difference between a third signal presented to the signal generator circuit and a fourth signal indicative of the output signal, the output count including the first signal.Type: ApplicationFiled: May 24, 2006Publication date: September 28, 2006Inventor: Dale Nelson
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Publication number: 20060142956Abstract: A system and method for determining the classification of a signal, or the identification of an object is provided. Based on rough set theory, or data mining, a training data set is partitioned and labeled with a multi-class entropy method. Reducts are calculated from a subset of the best-performing columns of the partitioned and labeled training set data. These reducts are applied to test signals and combined for each signal classification. The present system and method produces a more accurate, robust and efficient classification result.Type: ApplicationFiled: February 24, 2006Publication date: June 29, 2006Inventors: Janusz Starzyk, Dale Nelson
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Publication number: 20060025763Abstract: The ablation catheter is comprised of a guiding catheter and an inner catheter. The guiding catheter is comprised of a shaft section which is attached to an articulating section at its distal end and a first handle at its proximal end. The inner catheter is comprised of an elongated central shaft, an electrode assembly attached to the distal end of the central shaft, and a second handle attached to the proximal end of the central shaft. The electrode assembly is comprised of a flexible plastic catheter tube having an outer surface, a porous tip electrode, and at least one linear electrode carried on the outer surface of the catheter tube. The electrode assembly is articulated to better align the electrode assembly to the generally arcuate shape of the inner chambers of the heart.Type: ApplicationFiled: September 26, 2005Publication date: February 2, 2006Inventors: Dale Nelson, Steven Savage, William Penny, Jeffrey Santer
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Patent number: 6986769Abstract: The ablation catheter is comprised of a guiding catheter and an inner catheter. The guiding catheter is comprised of a shaft section which is attached to an articulating section at its distal end and a first handle at its proximal end. The inner catheter is comprised of an elongated central shaft, an electrode assembly attached to the distal end of the central shaft, and a second handle attached to the proximal end of the central shaft. The electrode assembly is comprised of a flexible plastic catheter tube having an outer surface, a porous tip electrode, and at least one linear electrode carried on the outer surface of the catheter tube. The electrode assembly is articulated to better align the electrode assembly to the generally arcuate shape of the inner chambers of the heart.Type: GrantFiled: September 8, 2003Date of Patent: January 17, 2006Assignee: Biosense Webster, Inc.Inventors: Dale Nelson, Steven D. Savage, William Penny, Jeffrey Santer
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Publication number: 20050265505Abstract: A phase-locked loop includes a variable frequency generator, a comparator and a counter. The variable frequency generator is configurable for generating an output signal having a frequency which varies based at least in part on at least first and second control signals presented thereto. The comparator is configurable for receiving a first signal and a second signal, the first signal being an input signal presented to the phase-locked loop and the second signal being representative of the output signal from the variable frequency generator. The comparator generates a difference signal representative of a difference between a phase and/or a frequency of the first and second signals, the difference signal comprising the first control signal. The counter is configurable for generating an output count based at least in part on the difference signal from the comparator. The output count is a digital representation of the difference signal, the output count comprising the second control signal.Type: ApplicationFiled: May 28, 2004Publication date: December 1, 2005Inventors: Dale Nelson, Parag Parikh
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Patent number: 6966893Abstract: An over pressurization relief apparatus having a manual over pressurization selector which allows a user to manually select from at least a first and second over pressurization limit. The over pressurization relief apparatus includes a pressurization chamber, a pressure relief mechanism, a seal, and a manual over pressurization selector. The pressurization of the pressurization chamber corresponds with the pressurization of the pressure infusion bag. The pressure relief mechanism prevents additional pressurization of the pressure infusion bag once the over pressurization limit has been reached. The seal is positioned between the pressurization chamber and the pressure relief mechanism to prevent the loss of pressurization from the pressure infusion bag when the pressurization in the pressurization chamber is less than the over pressurization limit.Type: GrantFiled: August 26, 2003Date of Patent: November 22, 2005Assignee: Merit Medical Systems, Inc.Inventors: Troy Holtby, Greg McArthur, Tom Stout, Arlin Dale Nelson
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Publication number: 20050010247Abstract: A distal protection device for use in a body lumen. The device includes a functional element which may be a filter or an occlusive element. The device includes means for controlling the movement and placement of the functional element along a guidewire. Motion of the guidewire can be independent of the motion of the functional element.Type: ApplicationFiled: August 10, 2004Publication date: January 13, 2005Inventors: Richard Kusleika, Daniel Adams, Kent Anderson, Dale Nelson, Jeffrey Santer
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Patent number: 6773448Abstract: A distal protection device for use in a body lumen. The device includes a functional element which may be a filter or an occlusive element. The device includes means for controlling the movement and placement of the functional element along a guidewire. Motion of the guidewire can be independent of the motion of the functional element.Type: GrantFiled: March 8, 2002Date of Patent: August 10, 2004Assignee: ev3 Inc.Inventors: Richard S. Kusleika, Daniel Adams, Kent D. Anderson, Dale Nelson, Jeffrey D. Santer
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Publication number: 20040054369Abstract: The ablation catheter is comprised of a guiding catheter and an inner catheter. The guiding catheter is comprised of a shaft section which is attached to an articulating section at its distal end and a first handle at its proximal end. The inner catheter is comprised of an elongated central shaft, an electrode assembly attached to the distal end of the central shaft, and a second handle attached to the proximal end of the central shaft. The electrode assembly is comprised of a flexible plastic catheter tube having an outer surface, a porous tip electrode, and at least one linear electrode carried on the outer surface of the catheter tube. The electrode assembly is articulated to better align the electrode assembly to the generally arcuate shape of the inner chambers of the heart.Type: ApplicationFiled: September 8, 2003Publication date: March 18, 2004Inventors: Dale Nelson, Steven D. Savage, William Penny, Jeffrey Santer
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Patent number: 6669692Abstract: The ablation catheter is comprised of a guiding catheter and an inner catheter. The guiding catheter is comprised of a shaft section which is attached to an articulating section at its distal end and a first handle at its proximal end. The inner catheter is comprised of an elongated central shaft, an electrode assembly attached to the distal end of the central shaft, and a second handle attached to the proximal end of the central shaft. The electrode assembly is comprised of a flexible plastic catheter tube having an outer surface, a porous tip electrode, and at least one linear electrode carried on the outer surface of the catheter tube. The electrode assembly is articulated to better align the electrode assembly to the generally arcuate shape of the inner chambers of the heart.Type: GrantFiled: August 21, 2000Date of Patent: December 30, 2003Assignee: Biosense Webster, Inc.Inventors: Dale Nelson, Steven D. Savage, William Penny, Jeffrey Santer
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Publication number: 20030171770Abstract: A distal protection device for use in a body lumen. The device includes a functional element which may be a filter or an occlusive element. The device includes means for controlling the movement and placement of the functional element along a guidewire. Motion of the guidewire can be independent of the motion of the functional element.Type: ApplicationFiled: March 8, 2002Publication date: September 11, 2003Inventors: Richard S. Kusleika, Daniel O. Adams, Kent D. Anderson, Dale Nelson, Jeffrey D. Santer