# US 9,872,626 B2 · Printed circuit board assembly with ferrite for medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,872,626 B2 - Document ID: US9872626B2 - Status: Granted - Kind: B2 - Application number: 14/934,783 - Filed: 2015-11-06 - Published: 2016-05-12 - Granted: 2018-01-23 - Earliest claimed: 2014-11-07 - Assignees: Welch Allyn, Inc. - Applicants: Welch Allyn, Inc. - Inventors: Paul Delucia; Alan S. Knieriem; David M. Babson; David M. Fallat - Web page: https://patentgrep.com/patent/US9872626B2 ## CPC - H05K 1/0216: {Reduction of cross-talk, noise or electromagnetic interference (grounding H05K1/0215)} - A61B 5/002: {Monitoring the patient using a local or closed circuit, e.g. in a room or building (A61B5/0017 takes precedence)} - A61B 5/02055: {Simultaneously evaluating both cardiovascular condition and temperature} - A61B 5/02141: {Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits (A61B5/02233, A61B5/0235 take precedence)} - A61B 5/02233: {Occluders specially adapted therefor (tourniquets A61B17/132)} - A61B 5/0235: Valves specially adapted therefor - A61B 5/7405: {using sound} - A61B 5/742: {using visual displays (displays for heart-related electrical signals, e.g. ECG, A61B5/339)} - A61B 50/13: Trolleys{, e.g. carts} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - H02J 7/342: {The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68)} - H05K 1/0296: {Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18)} - A61B 2560/0204: of power management - A61B 2562/12: Manufacturing methods specially adapted for producing sensors for in-vivo measurements - A61B 2562/166: the sensor is mounted on a specially adapted printed circuit board - G02F 1/13332: {Front frames} - G02F 1/133325: {Assembling processes} - H05K 1/183: associated with components mounted in and supported by recessed areas of the PCBs - H05K 2201/0715: provided by an outer layer of PCB - H05K 2201/09063: Holes or slots in insulating substrate not used for electrical connections - H05K 2201/1003: Non-printed inductor - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A printed circuit board assembly includes a printed circuit board and a ferrite. The printed circuit board has a substantially planar top surface and a substantially planar bottom surface. The ferrite has an annular cross section that defines a channel. The ferrite is positioned on the printed circuit board such that a portion of the plurality of traces passes through the channel. ## Claims ### Claim 1 A printed circuit board assembly, comprising: a printed circuit board, comprising: a plurality of traces; two slots defining a tongue portion of the printed circuit board; a substantially planar top surface; and a substantially planar bottom surface; and a ferrite having an annular cross section defining a channel, wherein the ferrite extends through the two slots and is positioned on and surrounds at least part of the tongue portion of the printed circuit board, such that a portion of the plurality of traces passes through the channel of the ferrite. ### Claim 2 (depends on 1) The printed circuit board assembly of claim 1, wherein the annular cross section is formed by two separate pieces that are joined together. ### Claim 3 (depends on 1) The printed circuit board assembly of claim 1, wherein the annular cross section is substantially rectangular. ### Claim 4 A medical device, comprising: a housing; and a printed circuit board assembly supported by the housing, the printed circuit board assembly comprising: a printed circuit board including a plurality of traces and two slots defining a tongue portion, wherein the printed circuit board has a substantially planar top surface and a substantially planar bottom surface; and wherein at least some of the plurality of traces carry sensitive signals; a ferrite extending through the two slots and surrounding at least part of the tongue portion, the ferrite having an annular cross section, the annular cross section defining a channel, wherein the ferrite is positioned on the tongue portion such that a portion of the plurality of traces passes through the channel. ### Claim 5 (depends on 1) The printed circuit board assembly of claim 1, further comprising a connector assembly positioned on a distal end of the tongue portion, wherein the ferrite is positioned on the distal end of the tongue portion. ### Claim 6 (depends on 5) The printed circuit board assembly of claim 5, wherein at least some of the plurality of traces carry a sensitive signal, and wherein, when the plurality of traces pass through the channel, the plurality of traces are positioned between the substantially planar top surface and the substantially planar bottom surface of the printed circuit board. ### Claim 7 (depends on 6) The printed circuit board assembly of claim 6, wherein the sensitive signal includes vital signs data. ### Claim 8 (depends on 7) The printed circuit board assembly of claim 7, wherein the connector assembly is configured to receive vital signs data from an external device. ### Claim 9 (depends on 1) The printed circuit board assembly of claim 1, further comprising a plurality of mounting elements configured to mate with a plurality of complementary mounting elements positioned on a medical device main assembly. ### Claim 10 A medical device, comprising: a printed circuit board assembly in communication, the printed circuit board assembly comprising: a printed circuit board including a plurality of traces, a tongue portion defined by two slots in the printed circuit board, a substantially planar top surface and a substantially planar bottom surface; and a ferrite extending through the two slots and surrounding at least part of the tongue portion, the ferrite having a first portion positioned on the substantially planar top surface and a second portion positioned on the substantially planar bottom surface, wherein the ferrite is positioned on the tongue portion of the printed circuit board such that a portion of the plurality of traces passes between the first portion and the second portion. ### Claim 11 (depends on 10) The medical device of claim 10, wherein the first portion of the ferrite is integral with the second portion of the ferrite. ### Claim 12 (depends on 11) The medical device of claim 11, wherein the ferrite has an annular cross section. ### Claim 13 (depends on 12) The medical device of claim 12, wherein a cross section of the ferrite is substantially rectangular annular, an inner surface of the ferrite defining a channel; wherein the plurality of traces carry a sensitive signal, and wherein, when the plurality of traces pass through the channel, the plurality of traces are positioned between the substantially planar top surface and the substantially planar bottom surface of the printed circuit board. ### Claim 14 (depends on 13) The medical device of claim 13, further comprising a connector assembly positioned on a distal end of the tongue portion, wherein the ferrite is positioned on the distal end of the tongue portion adjacent to the connector assembly. ### Claim 15 (depends on 14) The medical device of claim 14, wherein the sensitive signal includes vital sign data; and wherein the connector assembly is configured to receive vital signs data from an external device. ### Claim 16 (depends on 15) The medical device of claim 15, further comprising a plurality of mounting elements configured to mate with a plurality of complementary mounting elements positioned on a main assembly board. ### Claim 17 (depends on 4) The medical device of claim 4, further comprising a connector assembly positioned on a distal end of the tongue portion; wherein the ferrite is positioned on the distal end of the tongue portion; wherein the annular cross section is substantially rectangular; wherein at least some of the plurality of traces carry a sensitive signal including vital signs data, and wherein, when the plurality of traces pass through the channel of the ferrite, the plurality of traces do not transition from their electrical shielding. ### Claim 18 (depends on 17) The medical device of claim 17, wherein the connector assembly is configured to connect to a cable connected to a vital signs device. ### Claim 19 (depends on 18) The medical device of claim 18, further comprising a plurality of mounting elements configured to mate with a plurality of complementary mounting elements positioned on a medical device main assembly.