Patents by Inventor Thor R. Halseth
Thor R. Halseth 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: 7458962Abstract: A device for injecting fluid from a pre-filled cartridge is provided. The device includes a needle for piercing a patient. After an injection, the needle can be retracted to prevent inadvertent contact with the contaminated needle. A needle retainer releasably retains the needle in the retracted position. The needle can subsequently be re-extended to administer a subsequent injection. After the cartridge is emptied, the cartridge can be removed, if desired, and replaced with another cartridge for additional injections. Alternatively, the needle can be substantially permanently retracted into the device and safely disposed of in a sharps container.Type: GrantFiled: June 8, 2004Date of Patent: December 2, 2008Assignee: MDC Investment Holdings, Inc.Inventors: Robert T. McWethy, John Barker, Michael J. Botich, Thor R. Halseth
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Patent number: 7338469Abstract: A needle-bearing device for injecting medicinal fluid from a pre-filled vial is provided. After use, the needle is retracted into the body of the device to prevent inadvertent contact with the sharpened end of the needle. In one embodiment, the invention provides a manually actuable button that effectuates retraction of the needle after use. In another embodiment, retraction is effectuated automatically after the injection is complete.Type: GrantFiled: May 27, 2003Date of Patent: March 4, 2008Assignee: Specialized Health Products Inc.Inventors: John M. Barker, Thor R. Halseth, Michael J. Botich, Robert L. Hall
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Patent number: 7329238Abstract: The present invention relates to a syringe (10) for administering injections of medicinal fluids to a patient or withdrawal of fluid, such as blood from a patient. More specifically the present invention is a syringe device (10) for injecting medication or withdrawing fluid, wherein after use the needle (60) is shielded (15) against inadvertent contact to prevent needle sticks.Type: GrantFiled: December 7, 2000Date of Patent: February 12, 2008Assignee: Specialized Health Products Inc.Inventors: Thor R. Halseth, John Barker, Michael J. Botich
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Patent number: 7300416Abstract: Pre-filled injection ampoules for administering a readily-available dose of fluid medication, are provided with a retractable needle. The needle is held in a projecting configuration from a barrel against a rearward bias exerted on the needle by a spring located within a spring housing. A piston is positioned within the barrel for expelling the fluid medication therefrom. The piston is configured to release the needle after completion of an injection stroke and to receive the needle in an internal cavity. In alternative embodiments, a retractable-needle injection device includes a housing for receiving a pre-filled medication cartridge of the type having a slidable piston positioned therein. A stationary plunger is located within the housing for maintaining the piston at a fixed location as the cartridge is urged into the housing to administer an injection. After the end of an injection stroke, the cartridge is further urged into the housing to release a effectuate retraction.Type: GrantFiled: December 1, 2003Date of Patent: November 27, 2007Assignee: Specialized Health Products InternationalInventors: Michael J. Botich, Thor R. Halseth
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Patent number: 7153276Abstract: Needle-bearing medical devices are provided for fluid infusion, fluid transfusion, and inserting a guide wire. After use the needle is shielded to render the contaminated needle safe to prevent inadvertent needle sticks. The device includes a housing and a needle having a sharpened tip. A biasing element biases the needle toward a position in which the sharpened tip is shielded.Type: GrantFiled: August 31, 2004Date of Patent: December 26, 2006Assignee: MDC Investment Holdings, Inc.Inventors: John M. Barker, Thor R. Halseth, Michael J. Botich
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Patent number: 7097633Abstract: A retractable needle fluid transfer device is provided. The device includes a manually operable actuator for affecting retraction. Upon depressing the actuator, a spring displaces the needle rearwardly so that the contaminated needle is enclosed, thereby preventing inadvertent needle sticks. The device includes forward and rearward stops for impeding displacement of the needle after the needle is retracted. A seal prevents contaminants from entering the device after the needle is retracted. A safety sampling access port adapter for obtaining fluid samples from a fluid line is also provided. The sampling adapter includes a first end configured to cooperate with an access port attached to the fluid line. The sampling adapter further includes a collapsible socket configured to cooperate with a fluid container such as a vacuum tube. A needle assembly disposed within the housing of the sampling adapter is operable to pierce the seal on the fluid container.Type: GrantFiled: April 1, 2003Date of Patent: August 29, 2006Assignee: MDC Investment Holdings, Inc.Inventors: Michael J. Botich, Thor R. Halseth
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Patent number: 7090656Abstract: A hypodermic injection system with a retractable needle wherein the needle retracts within an interior cavity of a syringe plunger, such that the needle is confined within the plunger. A spring biases the needle rearwardly into the plunger, and a needle retainer releasably retains the needle against the bias of the spring. The plunger has a frangible end, which dissociates when the plunger engages the needle retainer, allowing the coiled spring to eject the needle into the interior cavity of the plunger. A body fluid sampling embodiment employs the same functional elements except the plunger is shorter and contains a linking that communicates with a vacuum container. The container allows fluid sampling and provides the structure to release the spring retracting the needle.Type: GrantFiled: July 19, 2000Date of Patent: August 15, 2006Assignee: MDC Investment Holdings, Inc.Inventors: Michael J. Botich, Thor R. Halseth
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Patent number: 7056306Abstract: A method for withdrawing a fluid sample from a patient is disclosed comprising the steps of: a) providing a sampling device (10) having a housing (20) and a needle (40) having a sharpened tip for piercing the skin of the patient; b) withdrawing fluid from the patient into the housing; c) retracting the needle so that the sharpened tip of the needle is enclosed within the housing; and d) expelling the fluid from the housing after the needle is retracted.Type: GrantFiled: August 7, 2000Date of Patent: June 6, 2006Assignee: MDC Investment Holdings, Inc.Inventors: Thor R Halseth, John M Barker, Robert Hall, Michael J Botich
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Patent number: 7033343Abstract: A device for injecting fluid from a pre-filled cartridge is provided. The device includes a needle for piercing a patient. After an injection, the needle can be retracted to prevent inadvertent contact with the contaminated needle. A needle retainer releasably retains the needle in the retracted position. The needle can subsequently be re-extended to administer a subsequent injection. After the cartridge is emptied, the cartridge can be removed, if desired, and replaced with another cartridge for additional injections. Alternatively, the needle can be retracted into the device and safely disposed of in a sharps container.Type: GrantFiled: March 15, 2002Date of Patent: April 25, 2006Assignee: MDC Investment Holdings, Inc.Inventors: Robert T. McWethy, John Barker, Thor R. Halseth, Bernardo Challiol
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Patent number: 6981963Abstract: A safety needle-bearing device for mixing and injecting medication from a two-chambered cartridge is provided. The device includes a needle that extends through the forward end of a barrel. A two-chambered cartridge is attached to the barrel and contains components of a medication stored separately in the chambers. A plunger in the rearward end of the cartridge can be advanced into the cartridge to combine the separate components and prepare the medication. As the cartridge is advanced forwardly into the barrel, the medication is injected through the needle and into a patient. At the completion of the injection stroke, the cartridge engages a needle retainer to actuate needle retraction. The needle is subsequently retracted to shield the contaminated needle.Type: GrantFiled: March 13, 2002Date of Patent: January 3, 2006Assignee: MDC Investment Holdings, Inc.Inventors: John M Barker, Thor R. Halseth, Joseph Kovalski, Robert T. McWethy, Bernardo Challiol
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Patent number: 6969372Abstract: An automatic retraction Huber needle safety enclosure which is designed principally for a Huber needle. A Huber needle is a hypodermic needle that is in the shape of a right angle. The safety enclosure has an internal chamber which is formed between a housing and a lid with the lid being movable relative to the housing between a closed position and an open position. The Huber needle is mounted within the internal chamber. The Huber needle is movable between an extended position and a retracted position. With the Huber needle in the extended position, the Huber needle is capable of being inserted within the body of a human or animal. With the Huber needle in the retracted position, the tip of the Huber needle is to be totally confined within the internal chamber. A wing assembly is attached to the housing which functions to facilitate securement of the safety enclosure to the body of the animal or human and forming an enclosure with the wing assembly folded in abutting juxtaposition.Type: GrantFiled: January 7, 2003Date of Patent: November 29, 2005Inventor: Thor R. Halseth
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Patent number: 6945960Abstract: A method and apparatus are provided for using a medical device (10) comprised of a medical apparatus (20) and a needle assembly (30). The needle assembly includes a needle (70) having a sharpened tip. Preferably, the medical apparatus (20) is a standard apparatus, such as a syringe or phlebotomy device. The medical apparatus (20) includes a connector (24), such as a Luer connector. The needle assembly (30) is configured so that it can be attached to the medical apparatus (20) and the sharpened tip of the needle (70) is automatically shielded after use to prevent inadvertent contact with the contaminated needle.Type: GrantFiled: November 29, 2000Date of Patent: September 20, 2005Assignee: MDC Investment Holdings, Inc.Inventors: John Barker, Michael J. Botich, Thor R. Halseth
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Patent number: 6921391Abstract: An infusion device is provided for use with an intravenous catheter connected to a primary fluid supply. A Y site (92) is in fluid communication with the catheter (90). The infusion device is releasably connectable with the Y site (92) to connect a secondary fluid supply (97) to the catheter (40). The infusion device includes a retractable needle (70) that is retractable after use.Type: GrantFiled: August 28, 1999Date of Patent: July 26, 2005Assignee: MDC Investment Holdings, Inc.Inventors: John Barker, Michael J. Botich, Thor R. Halseth
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Publication number: 20040249358Abstract: A device for injecting fluid from a pre-filled cartridge is provided. The device includes a needle for piercing a patient. After an injection, the needle can be retracted to prevent inadvertent contact with the contaminated needle. A needle retainer releasably retains the needle in the retracted position. The needle can subsequently be re-extended to administer a subsequent injection. After the cartridge is emptied, the cartridge can be removed, if desired, and replaced with another cartridge for additional injections. Alternatively, the needle can be substantially permanently retracted into the device and safely disposed of in a sharps container.Type: ApplicationFiled: June 8, 2004Publication date: December 9, 2004Inventors: Robert T. McWethy, John Barker, Michael J. Botich, Thor R. Halseth
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Patent number: 6786875Abstract: Needle-bearing medical devices are provided for fluid infusion, fluid transfusion, and inserting a guide wire. After use the needle is shielded to render the contaminated needle safe to prevent inadvertent needle sticks. The device includes a housing and a needle having a sharpened tip. A biasing element biases the needle toward a position in which the sharpened tip is shielded.Type: GrantFiled: April 18, 2001Date of Patent: September 7, 2004Assignee: MDC Investement Holdings, Inc.Inventors: John M. Barker, Thor R. Halseth, Michael J. Botich
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Publication number: 20040122373Abstract: A catheter insertion device is provided for inserting an over-the-needle catheter. The device includes an insertion needle that is retractable into the housing of the device after use to prevent exposure to the contaminated needle. A needle retainer releasably retains the needle in an extended position against the rearward bias of the biasing element. The needle retainer engages the hub of the catheter so that when the catheter is removed from the insertion device, the needle retainer automatically releases the needle. The biasing element then propels the needle rearwardly into the housing of the device. The device further allows the operator to intervene to delay retraction if desired.Type: ApplicationFiled: December 3, 2003Publication date: June 24, 2004Inventors: Michael J. Botich, Thor R. Halseth, John Barker
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Patent number: 6752798Abstract: A device for injecting fluid from a pre-filled cartridge is provided. The device includes a needle for piercing a patient. After an injection, the needle can be retracted to prevent inadvertent contact with the contaminated needle. A needle retainer releasably retains the needle in the retracted position. The needle can subsequently be re-extended to administer a subsequent injection. After the cartridge is emptied, the cartridge can be removed, if desired, and replaced with another cartridge for additional injections. Alternatively, the needle can be substantially permanently retracted into the device and safely disposed of in a sharps container.Type: GrantFiled: July 26, 2001Date of Patent: June 22, 2004Assignee: MDC Investment Holdings, Inc.Inventors: Robert T. McWethy, John Barker, Michael J. Botich, Thor R. Halseth
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Publication number: 20040116853Abstract: The present invention relates to a syringe (10) for administering injections of medicinal fluids to a patient or withdrawal of fluid, such as blood from a patient. More specifically the present invention is a syringe device (10) for injecting medication or withdrawing fluid, wherein after use the needle (60) is shielded (15) against inadvertent contact to prevent needle sticks.Type: ApplicationFiled: December 2, 2003Publication date: June 17, 2004Inventors: Thor R Halseth, John Barker, Michael J Botich
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Publication number: 20040111063Abstract: Pre-filled injection ampoules for administering a readily-available dose of fluid medication, are provided with a retractable needle. The needle is held in a projecting configuration from a barrel against a rearward bias exerted on the needle by a spring located within a spring housing. A piston is positioned within the barrel for expelling the fluid medication therefrom. The piston is configured to release the needle after completion of an injection stroke and to receive the needle in an internal cavity. In alternative embodiments, a retractable-needle injection device includes a housing for receiving a pre-filled medication cartridge of the type having a slidable piston positioned therein. A stationary plunger is located within the housing for maintaining the piston at a fixed location as the cartridge is urged into the housing to administer an injection. After the end of an injection stroke, the cartridge is further urged into the housing to release a effectuate retraction.Type: ApplicationFiled: December 1, 2003Publication date: June 10, 2004Inventors: Michael J. Botich, Thor R. Halseth
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Publication number: 20040092872Abstract: A fluid transfer device includes a tube holder, a fluid container, a double ended needle with forward sharpened tip, and rearward sharpened tip. Fluid is withdrawn or injected into a patient from the tip, and into fluid contained.Type: ApplicationFiled: October 31, 2003Publication date: May 13, 2004Inventors: Michael J. Botich, Thor R. Halseth