Patents by Inventor James R. Casciani
James R. Casciani 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: 7415298Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: February 23, 2007Date of Patent: August 19, 2008Assignee: Nellcor Puritan Bennett Inc.Inventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 7376454Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: October 30, 2003Date of Patent: May 20, 2008Assignee: Nellcor Puritan Bennett Inc.Inventors: James R. Casciani, Paul D. Mannheimer, Steven L. Nierlich, Stephen J. Ruskewicz
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Patent number: 7349726Abstract: Embodiments of the present invention are directed to a system and method for measuring blood oxygen saturation. Specifically, embodiments of the present invention include emitting light having a wavelength spectrum that is optimized for an oxygen saturation reading less than 80 percent, detecting the light, and transmitting signals based on the detected light, the signals being useful in determining blood oxygen saturation with a pulse oximeter.Type: GrantFiled: April 19, 2006Date of Patent: March 25, 2008Assignee: Nellcor Puritan Bennett LLCInventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Publication number: 20040204639Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: ApplicationFiled: October 30, 2003Publication date: October 14, 2004Applicant: Nellcor Puritan Bennett IncorporatedInventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 6662033Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: June 14, 2001Date of Patent: December 9, 2003Assignee: Nellcor IncorporatedInventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Publication number: 20020082489Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: ApplicationFiled: June 14, 2001Publication date: June 27, 2002Inventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 6272363Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: January 6, 1998Date of Patent: August 7, 2001Assignee: Nellcor IncorporatedInventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 5960610Abstract: An improved method for bending an oximeter sensor which simplifies the manufacturing. The sensor is manufactured without a bend, but when it is packaged for shipping, it is bent and restrained in the bent position. The sensor is made of a material which has memory so that when the packaging which restrains it is removed for use, the sensor will retain a partially bent shape.Type: GrantFiled: October 1, 1997Date of Patent: October 5, 1999Assignee: Nellcor Puritan Bennett IncorporatedInventors: Mitchell Levinson, James R. Casciani, Bryan J. Weber, Daniel Gronvall, Phillip S. Palmer, Andres Jimenez Lopez, Richard L. Shaw
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Patent number: 5916155Abstract: An oximeter sensor with an expandable element for positioning the sensor against the fetus. The expandable element is positioned to be removed from at least one of the emitter and detector so that the portion of the sensor adjacent the emitter or detector is not pressed unduly by the expandable element to exsanguinate the tissue. A constant pressure differential between a pressure of the expandable element and an amniotic pressure may be maintained.Type: GrantFiled: September 17, 1997Date of Patent: June 29, 1999Assignee: Nellcor Puritan Bennett IncorporatedInventors: Mitchell Levinson, Paul D. Mannheimer, James R. Casciani
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Patent number: 5851179Abstract: A fetal pulse oximeter sensor mounted on a sensor head with an articulating design. A lumen on one side of the sensor has a cable or rod therein to either push or pull that side of the sensor with respect to the main body, thus causing the sensor head to articulate. This can be used, for instance, to apply pressure against the fetus' scalp, with the sensor head, using the articulating mechanism, until an adhesive takes hold. Additionally, the sensor may be held in place on the fetus by an adhesive which is appropriate for a wet surface. The adhesive has the characteristics of having sufficient adhering characteristics to maintain the sensor in place, while at the same time not damaging the fetus' skin upon removal, without requiring suction.Type: GrantFiled: October 10, 1996Date of Patent: December 22, 1998Assignee: Nellcor Puritan Bennett IncorporatedInventors: Carl Ritson, Paul Mannheimer, Mitchell Levinson, James R. Casciani
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Patent number: 5839439Abstract: An oximeter sensor formed with a housing made of a relatively rigid material into which the oximeter electrical components can be mounted is provided. An overmolded material, of lesser rigidity, is injection-molded over the housing to complete the sensor. In one embodiment the housing is made of plastic, such as polypropylene, and the overmolded material is an injection-molded thermal plastic elastomer, such as Santoprene.TM. (polypropylene with 1 micron size particles of rubber). The housing preferably contains thin portions connecting thicker portions which support the electrical and optical components. These thin portions provide natural bending portions in the final oximeter sensor. By having the thin portions near or at the central, neutral axis of the sensor, flexibility is optimized in the longitudinal direction, while the housing provides stiffness laterally.Type: GrantFiled: November 13, 1995Date of Patent: November 24, 1998Assignee: Nellcor Puritan Bennett IncorporatedInventors: Steve L. Nierlich, Phillip S. Palmer, James R. Casciani, Mitch Levinson, Stephen J. Ruskewicz
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Patent number: 5782237Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on patients with high saturation. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: March 30, 1995Date of Patent: July 21, 1998Assignee: Nellcor Puritan Bennett IncorporatedInventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 5421329Abstract: A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on adults. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.Type: GrantFiled: April 1, 1994Date of Patent: June 6, 1995Assignee: Nellcor, Inc.Inventors: James R. Casciani, Paul D. Mannheimer, Steve L. Nierlich, Stephen J. Ruskewicz
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Patent number: 5377675Abstract: The present invention provides a method and apparatus for improved fetal contact with a fetal probe. The easily insertable probe includes a means for adjusting the position of the probe so that a sensor makes firm contact with the fetus. In one embodiment, the position is adjusted via a biasing segment of the probe which rotates about a fulcrum. In another embodiment, the position is adjusted via a bladder.Type: GrantFiled: June 24, 1992Date of Patent: January 3, 1995Assignee: Nellcor, Inc.Inventors: Stephen J. Ruskewicz, James R. Casciani
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Patent number: 4508965Abstract: An optical shaft angle encoder uses novel slit emitters having a long, narrow, configuration coupled with collimation lenses to utilize emitted light beams having an improved degree of collimation in an axis perpendicular to radial axes of a rotating code wheel and, thereby, to provide a higher quality generated electrical waveform which is used to describe shaft rotation. The slit emitters are narrowed to improve collimation uniaxially and lengthened to increase the total power of the emitted light.Type: GrantFiled: March 5, 1982Date of Patent: April 2, 1985Assignee: Hewlett-Packard CompanyInventor: James R. Casciani