Thor R Halseth

US Patent:

6398743, Jun 4, 2002

Filed:

Jul 28, 2000

Appl. No.:

09/628180

Inventors:

Thor R. Halseth - Simi Valley CA
John M Barker - Ventura CA
Michael J. Botich - Oxnard CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61B 500

US Classification:

600585, 600434, 600573, 606167, 60416412

Abstract:

A needle-bearing medical device is provided for 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. A connector is provided for attaching a fluid collection device to the guide wire insertion device, if desired. A guide is configured for guiding the guide wire through the port and into the needle. A method is also provided for using the medical device, in which the needle is inserted vascularly into a patient. A fluid collection device is attached to the connector of the device and blood is drawn into the fluid collection device to ensure that the needle is properly positioned within a vein or artery of the patient. A guide wire is then inserted into the patient through the device and the needle is retracted to shield the needle. In one embodiment, the device includes a second port through which the guide wire is inserted while the fluid collection device is attached to the insertion device.

US Patent:

6436070, Aug 20, 2002

Filed:

Nov 4, 1998

Appl. No.:

09/185863

Inventors:

Michael J. Botich - Oxnard CA
Thor R. Halseth - Simi Valley CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61M 500

US Classification:

604110, 604164, 604195

Abstract:

A non-reusable needle-bearing safety medical device is provided. The device is operable for inserting an intravenous catheter into a patient. The device includes a needle for piercing the patients skin and guiding the catheter into the vein of the patient. The needle is operable in two positions, an extended position, in which the needle projects forwardly from a housing, and a retracted position, in which the needle is retracted into the barrel so that the needle is enclosed by the barrel to prevent inadvertent contact with the needle after use. A needle retainer releasably retains the needle in the projecting position against the bias of a spring that biases the needle rearwardly toward the retracted position. After use, the operator displaces an actuator to release the needle. The spring then propels the needle rearwardly into the retracted position.

US Patent:

6461362, Oct 8, 2002

Filed:

Apr 30, 2001

Appl. No.:

09/845817

Inventors:

Thor R. Halseth - Simi Valley CA
John M. Barker - Ventura CA
Michael J. Botich - Oxnard CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61F 1100

US Classification:

606108, 604192, 600576

Abstract:

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. The 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. A method for inserting a catheter is also provided, in which the needle is hooded by the catheter during the insertion procedure.

US Patent:

6524276, Feb 25, 2003

Filed:

Jun 5, 2000

Appl. No.:

09/588151

Inventors:

Thor R. Halseth - Simi Valley CA
Michael J. Botich - Oxnard CA
Robert T. McWethy - Ventura CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61M 500

US Classification:

604110

Abstract:

A medical device is provided for collecting fluid samples from a patient, such as blood samples. The device includes a needle having a forward sharpened tip that is retracted into the housing of the device after use to prevent exposure to the contaminated needle. The rearward end of the housing is open, forming a socket for receiving a fluid container, such as a vacuum tube, that will receive the fluid sample. A needle retainer releasably retains the needle in the extended position against the rearward bias of a biasing element. After use, the medical professional retracts the needle by pressing an actuation button, allowing the biasing element to displace the needle rearwardly. A guide track guides the needle during retraction, tilting the needle off-axis.

US Patent:

6540732, Apr 1, 2003

Filed:

Dec 15, 1999

Appl. No.:

09/461267

Inventors:

Michael J. Botich - Oxnard CA
Thor R. Halseth - Simi Valley CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61B 1900

US Classification:

604413, 604507

Abstract:

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.

US Patent:

D473305, Apr 15, 2003

Filed:

Mar 25, 2002

Appl. No.:

29/157954

Inventors:

Thor R. Halseth - Agoura Hills CA 91301

International Classification:

2402

US Classification:

D24129, D24130

US Patent:

6547762, Apr 15, 2003

Filed:

Apr 17, 2001

Appl. No.:

09/744923

Inventors:

Michael Botich - Oxnard CA
John Barker - Ventura CA
Thor Halseth - Simi Valley CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61M 500

US Classification:

604110, 60416413, 60416501, 604198

Abstract:

A catheter insertion device is provided that includes an insertion needle that is retractable into the device after use to prevent exposure to the contaminated needle. The needle retainer releasably retains the needle in an extended position against the bias of the biasing element. When the catheter is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled rearwardly into the device. A device for inserting a guide wire into a patient is also provided. The device includes an insertion needle that is retractable into the housing of the device after use. A needle retainer releasably retains the needle in an extended position against the bias of the biasing element. The needle retainer engages the guide wire so that when the guide wire is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled into the device.

US Patent:

6569115, May 27, 2003

Filed:

Mar 20, 2000

Appl. No.:

09/528634

Inventors:

John M. Barker - Ventura CA
Thor R. Halseth - Simi Valley CA
Michael J. Botich - Oxnard CA
Robert L. Hall - Thousand Oaks CA

Assignee:

MDC Investment Holdings, Inc. - Wilmington DE

International Classification:

A61M 500

US Classification:

604110, 604195, 604187, 604201, 604203, 604231

Abstract:

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.