WO2005053530A1 - Support destine a fixer des dispositifs de captage de signaux sur une surface corporelle - Google Patents
Support destine a fixer des dispositifs de captage de signaux sur une surface corporelle Download PDFInfo
- Publication number
- WO2005053530A1 WO2005053530A1 PCT/IL2004/001100 IL2004001100W WO2005053530A1 WO 2005053530 A1 WO2005053530 A1 WO 2005053530A1 IL 2004001100 W IL2004001100 W IL 2004001100W WO 2005053530 A1 WO2005053530 A1 WO 2005053530A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holder
- devices
- signal pick
- vacuum
- body surface
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6834—Means for maintaining contact with the body using vacuum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
- A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
Definitions
- This invention relates to medical devices and more particularly to such devices for affixing signal pick-up devices such as a microphone or electrode, to a body surface.
- Body sounds are routinely used by physicians in the diagnosis of various disorders.
- a physician may place a stethoscope on a person's chest or back and monitor the person's breathing or heart sounds in order to detect adventitious (i.e. abnormal or unexpected) body sounds. The identification and classification of these adventitious sounds often provide important information about pulmonary abnormalities.
- the recorded sound signals may be amplified and filtered before being listened to by the physician.
- the recorded signals may also be analyzed by signal processing techniques.
- U.S. Patent 5,957,866 to Shapiro et al. discloses analysis of sound signals obtained by a microphone applied to a body surface.
- 6,394,967 discloses a system in which a plurality of microphones are affixed to a person's back or chest for recording respiratory tract 5 sound.
- This patent teaches affixing the signal pick-up devices to the body surface using tape or straps to prevent dislocation or movement during the data acquisition process.
- Kompis et al. (Chest 120:4, 2001, 1309-1321) discloses affixing eight or sixteen microphones to an individual's chest for obtaining respiratory tract signals, l o but the method of attachment is not disclosed.
- U.S. Patent No. 4,777,961 discloses affixing a microphone to a body surface by means of suction.
- a microphone embedded in the wall of a dome shaped stethoscope head is formed from an elastic flexible material.
- U.S. Patent No. 4,736,749 discloses a holder for a signal pick-up device, such as a microphone or electrode that is fixed to the body surface by vacuum.
- the 20 holder has a chamber that is evacuated by an external source of negative pressure. When the chamber is evacuated, the holder is held firmly to the skin and the signal- pick up device is pressed to the skin inside the chamber.
- the present invention provides an holder for affixing two or more signal pick-up devices to a body surface by means of a vacuum.
- the signal pick-up device may be, for example, a microphone, electrode, thermometer, or plethysmograph.
- the holder is formed from a flexible material that is air impervious such as silicon.
- the holder consists of a flexible retaining surface. Around the edge of the retaining surface on one face is a sealing ring, also formed from a flexible air impervious material.
- In the retaining surface are two or more attachment sites. Each attachment site is configured to receive a signal pick-up device.
- the holder is further provided with a vacuum port for attachment of a source of negative pressure.
- the holder With the signal pick-up devices inserted into the retaining surface, the holder is placed on a body surface with the sealing ring of the holder in contact with the body surface. A small volume of air is thus enclosed in the space bounded by the retaining surface, the sealing ring and the body surface. When this space is partially evacuated, the signal pick-up devices are pressed upon the body surface.
- the invention provides a matrix for affixing a plurality of signal pick-up devices to a body surface.
- the matrix comprises one or more holders of the invention.
- the matrix further comprises a harness containing a vacuum tube for connecting each holder to a source of negative pressure.
- the vacuum tube has one or more extensions, where each extension is configured to be connected to the vacuum port of a holder.
- the matrix may further comprise electrical wires for connecting each signal pick-up device to electrical circuitry for recording and/or analyzing signals detected by the signal pick-up devices.
- the invention provides a system for obtaining signals from a body surface.
- the system comprises one or more matrices of the invention.
- the system further comprises one or more vacuum pumps for creating and maintaining a partial vacuum in the holders.
- the system further comprises electrical circuitry for recording and/or processing signals obtained by the signal pick-up devices.
- the system may optionally comprise a display for displaying the signals or the results of processing the signals.
- Electronic circuitry for processing acoustic signals obtained from two or more microphones are disclosed in U.S. Patent No. 6,394,967 to Murphy, Kompis et al. (Chest 120:4, 2001, 1309-1321) and in Applicant's pending U.S. Patent Application Serial No. 10/338,742 filed on January 9, 2003.
- Fig. 1 shows a holder for affixing two or more signal pick-up devices to a body surface in accordance with one embodiment of the invention
- Fig. 2 shows a microphone in exploded view for use with the holder of Fig.l
- Fig. 3 shows the holder of Fig. 1 with the microphones of Fig. 2
- Fig. 4 shows a matrix for affixing signal pick-up devices to a body surface in accordance with an embodiment of the invention
- Fig. 1 shows a holder for affixing two or more signal pick-up devices to a body surface in accordance with one embodiment of the invention
- Fig. 2 shows a microphone in exploded view for use with the holder of Fig.l
- Fig. 3 shows the holder of Fig. 1 with the microphones of Fig. 2
- Fig. 4 shows a matrix for affixing signal pick-up devices to a body surface in accordance with an embodiment of the invention
- Fig. 1 shows a holder for aff
- FIG. 5 shows a holder for affixing two or more signal pick-up devices to a body surface in accordance with another embodiment of the invention
- Fig. 6 shows a microphone in exploded view for use with the holder of Fig.l
- Fig. 7 shows the holder of Fig. 5 with the microphones of Fig. 6
- Fig. 8 shows a matrix for affixing signal pick-up devices to a body surface in accordance with another embodiment of the invention
- Fig. 9 shows a system for recording and analyzing body signals in accordance with the invention.
- Fig. 1 shows a holder 10 in accordance with one embodiment of the invention.
- the holder 10 is shown in a perspective view from above in Fig. la and is shown in a perspective view from below in Fig. lb.
- the holder 10 comprises a retaining surface 12.
- the retaining surface 12 has an upper face 14 and a lower face 16.
- the terms “upper face” and “lower face” are used here for clarity in the description, and are not intended to imply that the holder 10 has any particular orientation in space when in use.
- Around the edge of the bottom face 16 extends a sealing ring 18.
- Two or more openings 20 are formed in the retaining surface 12. In the holder 10, three openings 20 are shown. This is by way of example only, and the holder 10 may be any number of openings greater than or equal to two, in accordance with the invention.
- Each opening 20 serves as an attachment site for a signal pick-up device such as a microphone, as described below.
- the upper face 14 of the holder 10 is provided with a vacuum port 22 for linkage to a source of negative pressure, as described in detail below.
- FIG. 2 shows a microphone 11 in exploded view that can be used with the holder 10.
- the microphone 11 consists of a core sensor 26 that fits into a housing 28.
- a pre-amplifier 30 amplifies electrical signals indicative of acoustic signals detected by the core sensor 26.
- a brass ring 32 has a mass that is selected to dampen vibrations above a predetermined frequency. For example, in the case that lung sounds are to be detected, the brass ring 32 will have a mass so as to dampen vibrations over 400 Hz.
- a casing 34 surrounds the housing 28 and has a cover 36.
- Fig. 3a shows three microphones 11 after assembly into the holder 10.
- the holder 10 has been placed on a body surface 42, such as a person's chest or back.
- An enclosed chamber 46 is formed by the body surface 42 and the holder 10.
- the retaining surface 12 of the holder 10 is lodged between a lip 44 of the housing (Fig.2) and the preamplifier 30, so as to form an air tight seal between the microphones 11 and the retaining surface 12 of the holder 10.
- the chamber 46 is evacuated by connecting a vacuum hose 48 at one end to the vacuum port 22, and at its other end to a source of negative pressure.
- Fig. 3b shows the holder with the microphones after evacuation of the chamber.
- the core sensor 26 of each microphone 11 is pressed against the body surface 42.
- F V A.
- the retaining surface 12 should be formed from a material that is sufficiently stiff so as to minimize its sagging into the chamber 46 when the chamber 46 is evacuated. Sagging of the retaining surface 12 is further reduced by several projections 49 that extend from the lower surface 16 of the retaining surface 12 and contact the body surface 46.
- the sealing ring 18 should preferably sufficiently high so as to prevent contact of the retaining surface 12 with the body surface 42 when the chamber 46 is evacuated. Because the core sensor 26 is surrounded by vacuum (apart from the microphone membrane which is in contact with the body surface), the core sensor 26 is acoustically isolated from sound vibrations not arising from the body. This improves the signal to noise ratio of the detected sound signals.
- the microphones 11 are preferably uni-directional microphones that detect only vibrations in the body surface 42.
- the sealing ring 18 should be formed from a soft and elastic material such as sponge rubber in order to provide a robust, flexible and forgiving seal that maintains the seal despite skin movement or skin imperfections such as hairs, pimples, pock marks, etc.
- the retaining surface 12 and the sealing ring 18 may be made from the same material.
- the sealing ring 18 is made from a material having a shore that is smaller than the shore of the retaining surface 12.
- the sealing ring 18 may have a shore of 15 while the retaining surface has a shore of 50 -60. The smaller shore of the sealing ring 18 allows the sealing ring to be compressed, as shown in Fig.
- Fig. 4 shows a matrix 50 in accordance with the invention.
- the matrix 50 includes one or more holders 10 in accordance with the invention.
- the matrix 50 shown in Fig. 4 has seven holders 10. This is by way of example only, and any number of holders may be used, where each holder is associated with any number of microphones greater than 1.
- the matrix includes a harness 52 containing a vacuum hose 54 for supplying a negative pressure to each holder.
- the vacuum hose 54 extends from a free end 56 of the harness, and terminates in one or more extensions 58, there being a separate extension 58 for each holder 10, where each extension 58 is connected to the vacuum port 22 of a different holder 10.
- the harness 54 also includes a cable 59 of wires 60.
- the wires in the cable 60 provide each microphone 11 with a voltage for activating the preamplifier in the microphone, and also serve for transmitting a voltage signal to recording or analyzing circuitry when wires connected to a microphone are connected at another end to recording or analyzing circuitry, as described below.
- the cable terminates in a plug 62 for attachment to recording or analyzing circuitry.
- the wires are in the form of a printed circuit, most preferably a flexible printed circuit.
- the signal pick-up devices, such as the microphones 11 are wireless. In this case, the harness 52 may not contain any wires.
- Fig. 5 shows a holder 63 in accordance with another embodiment of the invention.
- the holder 63 is shown in a perspective view from above in Fig. 5a and is shown in a perspective view from below in Fig. 5b.
- the holder 63 has components in common with the holder 10, and similar components are indicated in both figures with the same reference numeral.
- the holder 63 has a sealing ring 18 and two or more openings 20 formed in the retaining surface 12 that serve as an attachment site for a signal pick-up device such as a microphone, as described below.
- the upper face 14 of the holder 63 is provided with two vacuum ports 62 for linkage to a source of negative pressure, as described in detail below. Each opening 20 is surrounded on the upper face 14 by a cylindrical extension 15.
- a conduit 64 passes through the vacuum port 22 from the upper face 14 through the retaining surface 12 to the lower face 16.
- Fig. 6 shows a microphone 61 in exploded view that can be used with the holder 63.
- the microphone 61 consists of a core sensor 76 that fits into a housing 78.
- a pre-amplifier 80 amplifies electrical signals indicative of acoustic signals detected by the core sensor 76.
- Brass spacers 82 have a mass that is selected to dampen vibrations above a predetermined frequency.
- the brass spacers 82 are selected so as to dampen vibrations over 400 Hz.
- the microphone is assembled and held together by means of mated male and female screws 86 extending that secure the housing 78 to a base plate 79.
- the base plate 79 has a cylindrical extension 81 that terminates in a disc 83.
- Two spring washers 91 serve to immobilize the preamplifier 80 inside the housing 78.
- between the base plate 79 and the core sensor 76 is a disk 87 that serves as an acoustic coupler.
- the disk 87 may be made from silicon.
- Fig. 7a shows three microphones 61 after assembly into the holder 63.
- the holder 63 has been placed on a body surface 92, such as a person's chest or back.
- An enclosed chamber 96 is formed by the body surface 42 and the holder 63.
- Each cylindrical extension 15 of the holder 60 is lodged between the base plate 79 and the disc 83, so as to form an air tight seal between the microphones 61 and the retaining surface 12 of the holder 63.
- the chamber 96 is evacuated by connecting a vacuum hose 98 at one end to the vacuum ports 62, and at its other end to a source of negative pressure.
- Fig. 7b shows the holder 63 with the microphones 61 after evacuation of the chamber 96.
- the disk 83 of each microphone 61 is pressed against the body surface 92.
- F V'A.
- the relatively large area A contact between the retaining surface 12 and the body surface 92 allows a lower value V in order to attain a specific force F.
- a vacuum of less than 120 mbar is sufficient to achieve a force of about 350 grams on each microphone.
- a reduced V decreases the chances of haemotoma.
- the core sensor 76 is bonded to the coupler 87 which is pressed to the base plate 79 in the assembled microphone. This improves the signal to noise ratio of the detected sound signals.
- the microphones 61 are preferably uni-directional microphones that detect only vibrations in the body surface 92.
- Fig. 8 shows a matrix 100 in accordance with the invention.
- the matrix 100 includes one or more holders 63 in accordance with the invention.
- the matrix 100 5 shown in Fig. 8 has seven holders 63. This is by way of example only, and any number of holders may be used, where each holder is associated with any number of microphones greater than 1.
- the matrix includes a distribution system 102 containing two vacuum hoses 104 for supplying a negative pressure to each holder 63.
- the vacuum hoses 104 extend from a socket 106 of the harness and supplies a
- the distribution system also includes two cables 109 of wires 110.
- the wires in the cable 109 provide each microphone 61 with a voltage for activating the preamplifier in the microphone, and also serve for transmitting a voltage signal to recording or analyzing circuitry when wires
- the wires are in the form of a printed circuit, most preferably a flexible printed circuit.
- the signal pick-up devices such as the microphones
- FIG. 9 shows a system for recording and/or analyzing two or more sound signals, in accordance with the invention.
- the system includes two matrices 50a and 50b, or alternatively the two matrices 100 (not shown) of the invention.
- the vacuum hose 54 is connected to a source of negative pressure 62.
- 25 negative pressure 62 comprises a vacuum pump 64 and an accumulator 66.
- the vacuum pump 64 is used to attain the desired vacuum in the chamber 46 of the holders 10.
- a valve 133 may inserted between the matrices 50 that is initially closed so that a vacuum is applied only to the matrix 50a. After the desired vacuum has been achieved under the matrix 50a, the valve 133 is opened so as to allow a
- Fig. 9 shows exemplary electronic circuitry that may be used in the system of the invention.
- the analog signals are digitized by a multi-channel analog to digital converter 120.
- the digital data signals 125 are input to a memory 130.
- Data input to the memory 130 are accessed by a processor 135 configured to process the data signals 125.
- the signals 125 may be denoised by filtering components having frequencies outside of the range of body sounds in the body region, for example, vibrations due to movement of the individual.
- Each signal 125 may also be subject to band pass filtering so that only frequency components in the signal within a range of interest are analyzed.
- An input device such as a computer keyboard 140 or mouse 145 is used to input relevant information relating to the examination such as personal details of the individual 110.
- a display screen 150 is used to display the signals 125 or the results of the processing.
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52614403P | 2003-12-02 | 2003-12-02 | |
US60/526,144 | 2003-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005053530A1 true WO2005053530A1 (fr) | 2005-06-16 |
Family
ID=34652423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2004/001100 WO2005053530A1 (fr) | 2003-12-02 | 2004-12-02 | Support destine a fixer des dispositifs de captage de signaux sur une surface corporelle |
Country Status (1)
Country | Link |
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WO (1) | WO2005053530A1 (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7881762B2 (en) | 2005-09-30 | 2011-02-01 | Nellcor Puritan Bennett Llc | Clip-style medical sensor and technique for using the same |
US8060171B2 (en) | 2005-09-29 | 2011-11-15 | Nellcor Puritan Bennett Llc | Medical sensor for reducing motion artifacts and technique for using the same |
US8073518B2 (en) | 2006-05-02 | 2011-12-06 | Nellcor Puritan Bennett Llc | Clip-style medical sensor and technique for using the same |
US8145288B2 (en) | 2006-08-22 | 2012-03-27 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8175671B2 (en) | 2006-09-22 | 2012-05-08 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8190225B2 (en) | 2006-09-22 | 2012-05-29 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8352010B2 (en) | 2005-09-30 | 2013-01-08 | Covidien Lp | Folding medical sensor and technique for using the same |
US8396527B2 (en) | 2006-09-22 | 2013-03-12 | Covidien Lp | Medical sensor for reducing signal artifacts and technique for using the same |
US8515510B2 (en) | 2009-03-31 | 2013-08-20 | Covidien Lp | Electroadhesive medical devices |
WO2014120300A2 (fr) * | 2012-10-24 | 2014-08-07 | The Johns Hopkins University | Système et procédés de surveillance acoustique |
EP3011900A1 (fr) * | 2014-10-24 | 2016-04-27 | Quickels Systems AB | Module d'électrode, système de succion et outil pour la surveillance de biopotentiel |
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2004
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Patent Citations (6)
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US4938218A (en) * | 1983-08-30 | 1990-07-03 | Nellcor Incorporated | Perinatal pulse oximetry sensor |
US4685466A (en) * | 1985-01-29 | 1987-08-11 | Rau Guenter | Measuring sensor for the non-invasive detection of electro-physiological quantities |
US4940056A (en) * | 1988-11-15 | 1990-07-10 | Center For Innovative Technology | Electrogustograph |
EP0876791A1 (fr) * | 1995-11-06 | 1998-11-11 | Colin Corporation | Système de détection de la forme d'onde électrocardiographique |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8060171B2 (en) | 2005-09-29 | 2011-11-15 | Nellcor Puritan Bennett Llc | Medical sensor for reducing motion artifacts and technique for using the same |
US8965473B2 (en) | 2005-09-29 | 2015-02-24 | Covidien Lp | Medical sensor for reducing motion artifacts and technique for using the same |
US8352010B2 (en) | 2005-09-30 | 2013-01-08 | Covidien Lp | Folding medical sensor and technique for using the same |
US7881762B2 (en) | 2005-09-30 | 2011-02-01 | Nellcor Puritan Bennett Llc | Clip-style medical sensor and technique for using the same |
US8073518B2 (en) | 2006-05-02 | 2011-12-06 | Nellcor Puritan Bennett Llc | Clip-style medical sensor and technique for using the same |
US8437826B2 (en) | 2006-05-02 | 2013-05-07 | Covidien Lp | Clip-style medical sensor and technique for using the same |
US8577436B2 (en) | 2006-08-22 | 2013-11-05 | Covidien Lp | Medical sensor for reducing signal artifacts and technique for using the same |
US8145288B2 (en) | 2006-08-22 | 2012-03-27 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8195264B2 (en) | 2006-09-22 | 2012-06-05 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8190224B2 (en) | 2006-09-22 | 2012-05-29 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8396527B2 (en) | 2006-09-22 | 2013-03-12 | Covidien Lp | Medical sensor for reducing signal artifacts and technique for using the same |
US8190225B2 (en) | 2006-09-22 | 2012-05-29 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8175671B2 (en) | 2006-09-22 | 2012-05-08 | Nellcor Puritan Bennett Llc | Medical sensor for reducing signal artifacts and technique for using the same |
US8515510B2 (en) | 2009-03-31 | 2013-08-20 | Covidien Lp | Electroadhesive medical devices |
WO2014120300A2 (fr) * | 2012-10-24 | 2014-08-07 | The Johns Hopkins University | Système et procédés de surveillance acoustique |
WO2014120300A3 (fr) * | 2012-10-24 | 2014-10-16 | The Johns Hopkins University | Système et procédés de surveillance acoustique |
EP3011900A1 (fr) * | 2014-10-24 | 2016-04-27 | Quickels Systems AB | Module d'électrode, système de succion et outil pour la surveillance de biopotentiel |
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