Patents by Inventor Darrel Palmer
Darrel Palmer 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: 5667500Abstract: A medical lavage apparatus for body cavities comprising a housing having parallel irrigation and aspiration cylinders with captive plungers extending in bores thereof from a first end and pairs of check-valves positioned in parallel, smaller, offset cylinders located at second ends such that reciprocal movement of the each plunger in each cylinder performs the function of a one-way pump. The plungers are held captive and aligned by guide-stops proximally disposed in each cylinder. Each plunger comprises a seal disposed at the distal end thereof which inhibits communication between the pairs of check-valves in each cylinder when the plunger is fully seated in the cylinder. Novel jam-free dome shaped, slit check-valves are disposed to be the pair of check-valves in the aspiration cylinder in one embodiment and in irrigation cylinders as well in other embodiments. The dome shaped valves are described for use in other medical fluid control applications, as well.Type: GrantFiled: May 25, 1995Date of Patent: September 16, 1997Assignee: Ballard Medical ProductsInventors: Darrel Palmer, William R. Houghton
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Patent number: 5664564Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: July 13, 1994Date of Patent: September 9, 1997Inventor: Darrel Palmer
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Patent number: 5611336Abstract: A reliable contamination resistant single use disposable medical non-ventilating aspirating device and method. The device releasibly connects to and aligns with an indwelling endotracheal tube to accommodate advancing of an aspirating catheter tube the device by manual manipulation through a sterile flexible envelope and selective evacuation of lung secretions through a closed and sterile two-position normally closed manually operable valve at the proximal end of the device, while simultaneously accommodating voluntarily respiration by the patient.Type: GrantFiled: March 30, 1995Date of Patent: March 18, 1997Assignee: Ballard Medical Products, Inc.Inventors: Larry Page, Darrel Palmer
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Patent number: 5452823Abstract: A biological agent growth-limiting and cross contamination suppressing foaming assembly. The foaming assembly comprises a disposable foamable-liquid transport and foaming cartridge and a housing cooperatively used with the cartridge to produce and dispense foam from the cartridge. The cartridge comprises a low-cost package comprising a molded tray which provides cavities for liquid containing chambers, air and liquid communicating channels, and initially sealed but frangible ports and a liquid impervious sheet which covers an open face of the tray to seal otherwise open portions of the chambers, channels and ports. The housing comprises a vertical wall mounting plate, a cartridge accommodating and servicing cover hingeably affixed to the mounting plate, a pump which provides pressurized gas to produce the foam within the cartridge, and sharpened stems or shafts to open the frangible ports.Type: GrantFiled: August 24, 1994Date of Patent: September 26, 1995Assignee: Ballard Medical ProductsInventors: Darrel Palmer, Robert P. Cook
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Patent number: 5372281Abstract: A biological agent growth-limiting and cross contamination suppressing foaming assembly. The foaming assembly comprises a disposable foamable-liquid transport and foaming cartridge and a housing cooperatively used with the cartridge to produce and dispense foam from the cartridge. The cartridge comprises a low-cost package comprising a molded tray which provides cavities for liquid containing chambers, air and liquid communicating channels, and initially sealed but frangible ports and a liquid impervious sheet which covers an open face of the tray to seal otherwise open portions of the chambers, channels and ports. The housing comprises a vertical wall mounting plate, a cartridge accommodating and servicing cover hingeably affixed to the mounting plate, a pump which provides pressurized gas to produce the foam within the cartridge, and sharpened stems or shafts to open the frangible ports.Type: GrantFiled: October 12, 1993Date of Patent: December 13, 1994Assignee: Ballard Medical ProductsInventors: Darrel Palmer, Robert P. Cook
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Patent number: 5339988Abstract: A biological agent growth-limiting and cross contamination suppressing foaming assembly. The foaming assembly comprises a disposable foamable-liquid transport and foaming cartridge and a housing cooperatively used with the cartridge to produce and dispense foam from the cartridge. The cartridge comprises a low-cost package comprising a molded tray which provides cavities for liquid containing chambers, air and liquid communicating channels, and initially sealed but frangible ports and a liquid impervious sheet which covers an open face of the tray to seal otherwise open portions of the chambers, channels and ports. The housing comprises a vertical wall mounting plate, a cartridge accommodating and servicing cover hingeably affixed to the mounting plate, a pump which provides pressurized gas to produce the foam within the cartridge, and sharpened stems or shafts to open the frangible ports.Type: GrantFiled: October 19, 1992Date of Patent: August 23, 1994Assignee: Ballard Medical ProductsInventors: Darrel Palmer, Robert P. Cook
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Patent number: 5330424Abstract: A medical lavage apparatus for body cavities comprising a housing having parallel irrigation and aspiration cylinders with captive plungers extending in bores thereof from a first end and pairs of check-valves positioned in parallel, smaller, offset cylinders located at second ends such that reciprocal movement of the each plunger in each cylinder performs the function of a one-way pump. The plungers are held captive and aligned by guide-stops proximally disposed in each cylinder. Each plunger comprises a seal disposed at the distal end thereof which inhibits communication between the pairs of check-valves in each cylinder when the plunger is fully seated in the cylinder. Novel jam-free dome shaped, slit check-valves are disposed to be the pair of check-valves in the aspiration cylinder in one embodiment and in irrigation cylinders as well in other embodiments. The dome shaped valves are described for use in other medical fluid control applications, as well.Type: GrantFiled: June 24, 1993Date of Patent: July 19, 1994Assignee: Ballard Medical ProductsInventors: Darrel Palmer, William R. Houghton
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Patent number: 5277177Abstract: A reliable contamination resistant single use disposable medical non-ventilating aspirating device and method. The device releasibly connects to and aligns with an indwelling endotracheal tube to accommodate advancing of an aspirating catheter tube of the device by manual manipulation through a sterile flexible envelope and selective evacuation of lung secretions through a closed and sterile two-position normally closed manually operable valve at the proximal end of the device, while simultaneously accommodating voluntarily respiration by the patient.Type: GrantFiled: July 16, 1991Date of Patent: January 11, 1994Assignee: Ballard Medical ProductsInventors: Larry E. Page, Darrel Palmer
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Patent number: 5254086Abstract: A medical lavage apparatus for body cavities comprising a housing having parallel irrigation and aspiration cylinders with captive plungers extending in bores thereof from a first end and pairs of check-valves positioned in parallel, smaller, offset cylinders located at second ends such that reciprocal movement of the each plunger in each cylinder performs the function of a one-way pump. The plungers are held captive and aligned by guide-stops proximally disposed in each cylinder. Each plunger comprises a seal disposed at the distal end thereof which inhibits communication between the pairs of check-valves in each cylinder when the plunger is fully seated in the cylinder. Novel jam-free dome shaped, slit check-valves are disposed to be the pair of check-valves in the aspiration cylinder in one embodiment and in irrigation cylinders as well in other embodiments. The dome shaped valves are described for use in other medical fluid control applications, as well.Type: GrantFiled: July 31, 1992Date of Patent: October 19, 1993Assignee: Ballard Medical ProductsInventors: Darrel Palmer, William R. Houghton
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Patent number: 5215522Abstract: A reliable, contamination-resistant, single-use, disposable, medical, non-ventilating, aspirating device and method. The device releasibly connects to and aligns with an indwelling endotracheal tube to accommodate advancing of an aspirating catheter tube of the device by manual manipulation through a sterile, flexible envelope and selective evacuation of lung secretions through a closed and sterile two-position, normally-closed, manually-operable valve at the proximal end of the device, while simultaneously accommodating voluntarily respiration by the patient.Type: GrantFiled: April 5, 1991Date of Patent: June 1, 1993Assignee: Ballard Medical ProductsInventors: Larry E. Page, Darrel Palmer
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Patent number: 5029580Abstract: An aspirating/ventilating or aspirating apparatus comprising multi-lumen catheter tubes, for evacuation of lung secretions and for other functions as well. Two and three lumen catheter tubes which comprise three unique distal catheter end structures are disclosed. Material comprising oxygen-containing gas is introduced into the lungs under positive pressure through a first lumen of the catheter tube at a predetermined rate while secretions (and gas) are simultaneously aspirated from the lung into a second lumen by force of negative pressure. Oxygen gas inflow is controlled to equal gas outflow to maintain the partial pressure of oxygen into the lung at a high respiratory level. In a first distal catheter end structure, an oxygen-containing gas is introduced through the first lumen as a circumscribing jet around the second lumen to provide fluid flow turbulence external to a second lumen to improve homogenization of localized secretions resulting in more efficient aspiration.Type: GrantFiled: July 18, 1990Date of Patent: July 9, 1991Assignee: Ballard Medical ProductsInventors: F. Richard Radford, Richard C. Lambert, Darrel Palmer
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Patent number: 5025806Abstract: Ventilating/aspirating apparatus, and related methods, the apparatus comprising novel medication effluent structure forming a part of a ventilating/aspirating fitting immediately adjacent the patient by which a metered predetermined dosage of respirating medication is introduced as an atomized spray using one hand.Type: GrantFiled: April 16, 1990Date of Patent: June 25, 1991Assignee: Ballard Medical ProductsInventors: Darrel Palmer, Richard Radford
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Patent number: 4872579Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: April 11, 1988Date of Patent: October 10, 1989Assignee: Ballard Medical ProductsInventor: Darrel Palmer
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Patent number: 4867153Abstract: A gravity drainage system for manual removal of liquid accumulated in ventilating tubing which does not require interruption of ventilation or manual disassembly of drainage of the tubing. Periodic evacuation of accumulated liquid from the drainage system without interruption of ventilation is also facilitated.Type: GrantFiled: May 24, 1988Date of Patent: September 19, 1989Assignee: Ballard Medical ProductsInventors: Rick D. Lorenzen, William Houghton, Darrel Palmer, Kevin Kammerer
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Patent number: 4846376Abstract: A nonaerosol foamer comprised of an outer container or bottle and novel internal labyrinth structure comprising a slotted body covered along one face with a film of durable synthetic resinous material whereby separate air and liquid influent channels, a foaming site, and a separate foam effluent channel are defined. The liquid influent channel is constructed such that it allows controlled movement of the foamable liquid from the liquid reservoir to the foaming site during application of positive pressure within the outer container, while preventing siphoning of the foam. A novel film flap valve controls flow of influent air into the container to replenish air earlier used to produce foam.Type: GrantFiled: February 25, 1988Date of Patent: July 11, 1989Assignee: Ballard Medical ProductsInventor: Darrel Palmer
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Patent number: 4836199Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: May 14, 1987Date of Patent: June 6, 1989Assignee: Ballard Medical ProductsInventor: Darrel Palmer
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Patent number: 4696296Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: October 7, 1986Date of Patent: September 29, 1987Assignee: Ballard Medical ProductsInventor: Darrel Palmer
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Patent number: 4638539Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: August 20, 1985Date of Patent: January 27, 1987Assignee: Ballard Medical ProductsInventor: Darrel Palmer
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Patent number: 4569344Abstract: A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily delivered to and exhausted from the lungs of a medical patient, said connector comprising structure which accommodates the manual insertion of the catheter tube into and manual removal from the trachea/bronchi patient through the connector. This facilitates aspiration of undesired respiratory fluids.Type: GrantFiled: July 23, 1984Date of Patent: February 11, 1986Assignee: Ballard Medical ProductsInventor: Darrel Palmer