MARCIA ANN RYDER
Nursing in San Mateo, CA
License number
Pennsylvania RN176411L
Category
Nursing
Type
Registered Nurse
Address
Address
2
San Mateo, CA 94402
Pennsylvania
Pennsylvania
Personal information
See more information about MARCIA ANN RYDER at radaris.comName
Address
Phone
Vista, CA
2875 Bottlebrush Dr, Los Angeles, CA 90077
1244 White Sands Dr, San Marcos, CA 92078
11855 Caminito Ronaldo, San Diego, CA 92128
Professional information
See more information about MARCIA ANN RYDER at trustoria.com
Method And Apparatus For Determining The Position Of Catheters, Tubes, Placement Guidewires And Implantable Ports Within Biological Tissue
Method And Apparatus For Determining The Position Of Catheters, Tubes, Placement Guidewires And Implantable Ports Within Biological Tissue
US Patent:
5375596, Dec 27, 1994
Filed:
Sep 29, 1972
Appl. No.:
7/953072
Inventors:
Robert G. Twiss - Palo Alto CA
Marcia A. Ryder - San Mateo CA
Marcia A. Ryder - San Mateo CA
Assignee:
HDC Corporation - San Jose CA
International Classification:
A61B 505
US Classification:
1286531
Abstract:
A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports (64)), tubes (30) and placement guidewires (22) within biological tissue is disclosed including a transmitter/detector unit (2) having an alternating current (AC) radio-frequency (RF) transmitter with antenna (14), and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna (28, 32, 74) situated along the full length of the catheter, guidewire, and implanted port assemblies (22, 30, 64). The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip (18) to a wide-band RF detector circuit, situated within the transmitter/detector unit (2). The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna. This proximity is displayed visually to the operator using a sequential linear LED array (8) whose sensitivity is controlled by a gain control knob (10).
Method And Apparatus For Determining The Position Of Catheters, Tubes, Placement Guidewires And Implantable Ports Within Biological Tissue
Method And Apparatus For Determining The Position Of Catheters, Tubes, Placement Guidewires And Implantable Ports Within Biological Tissue
US Patent:
5513637, May 7, 1996
Filed:
Dec 21, 1994
Appl. No.:
8/362195
Inventors:
Robert G. Twiss - Palo Alto CA
Marcia A. Ryder - San Mateo CA
Marcia A. Ryder - San Mateo CA
Assignee:
HDC Corporation - San Jose CA
International Classification:
A61B 505
US Classification:
1286531
Abstract:
A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports), tubes and placement guidewires within biological tissue is disclosed including a transmitter/detector unit having an alternating current (AC) radio-frequency (RF) transmitter with antenna and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna situated along the full length of the catheter, guidewire, and implanted port assemblies. The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip to a wide-band RF detector circuit, situated within the transmitter/detector unit. The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna. This proximity is displayed visually to the operator using a sequential linear LED array whose sensitivity is controlled by a gain control knob.