WO2000034739A2 - Method for the manufacture of hearing aid shells - Google Patents
Method for the manufacture of hearing aid shells Download PDFInfo
- Publication number
- WO2000034739A2 WO2000034739A2 PCT/GB1999/004102 GB9904102W WO0034739A2 WO 2000034739 A2 WO2000034739 A2 WO 2000034739A2 GB 9904102 W GB9904102 W GB 9904102W WO 0034739 A2 WO0034739 A2 WO 0034739A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- probe
- ear
- ear canal
- ultrasonic
- canal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
- H04R25/652—Ear tips; Ear moulds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/06—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring contours or curvatures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
- H04R25/658—Manufacture of housing parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1076—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions inside body cavities, e.g. using catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
Definitions
- This invention relates to the process of manufacturing hearing aid shells.
- Hearing aid shells are currently manufactured by making an impression of a patient's ear canal by means of injecting a liquid silicon rubber compound into the canal and allowing it to solidify. This mould is then withdrawn from the ear and sent to a laboratory where a master casting mould is made that is used to cast the patient's hearing aid shell. This process is far from ideal as the silicon rubber compound shrinks during the curing stage resulting in an imperfect mould being cast . This requires that the shell be sent back to the laboratory for shape modification, a number of times, before a proper fit can be obtained. The process is also critically dependent on the skill of the individual hearing aid practitioner during the injection stage,resulting in a considerable variability of the accuracy of the impressions.
- This invention obviates these problems by means of the following process.
- This entails the use of a non-contacting , ultrasonic probe, that has been developed for arterial imaging, and that images the shape of the ear canal cavity and relays this information to an image processing computer where a digital image file of the ear canal's shape is created.
- This file is then used in conjunction with a rapid prototyping setup such as stereo lithography, selective laser sintering , laminated object modelling , inkjet modelling , fused deposition modelling, 3DP the three dimensional printing system of the Massachusetts Institute of Technology, and any other rapid prototyping system that produces real models from computer mathematical models to manufacture the hearing aid shell that accurately fits the ear canal.
- Figure 1 shows a block diagram of the process where the electrical signal that contains the shape information from the ultrasonic probe (1) is fed into the image processing computer (2) that also incorporates the control electronics that generate the appropriate signals for the transmission and reception of the ultrasonic signals required for the operation of the probe .
- processing and enhancement that includes the use of an edge detection algorithm that detects the boundary between the ear canal wall and the liquid used for acoustically coupling the ultrasonic waves from the transducer to the wall ,multiple cross-sectional views of the ear canal can be viewed and manipulated on a monitor. Edge detection is necessary as the ultrasonic waves give reflected signals over a range of different depths of the wall's thickness.
- a digital image file of the shape of the ear canal is then transmitted directly to a rapid prototyping system (4) or recorded onto a compact disc (3) that is used in a rapid prototyping system (4) to produce an accurate hearing aid shell (5).
- Figure 2 shows the location of the ultrasonic probe (6) in the ear canal (7) .
- multiple transmitter/receiver transducers (8) positioned around the circumference of the probe sequentially record the cross-sectional shape of the canal acting like minature pulsed radar systems. This measurement is repeated for adjacent sections of the canal by means of a stepper motor controlled actuator (9) that withdraws the probe incrementally from the canal until the required area has been measured.
- the accuracy along the longitudinal axis of the ear canal depends on the size of each increment , 1 to 3 mm. being typical values.
- FIG 3 shows an embodiment of the ultrasonic probe head (10) where a coherent fibre optic bundle (11) is incorporated into the central region of the probe to allow the practitioner to determine a safe position of the head of the probe with respect to the tympanic membrane ,(ear drum ), (12), the image being viewed on a separate monitor. Illumination of the ear drum is accomplished by means of an incoherent fibre optic bundle , (15) wound around the coherent imaging fibre , (11).
- the ultrasonic transducer array (13) is wound around the coherent optical fibre (11) and the incoherent fibre (15)
- Figure 4 shows how the ultrasonic probe (14) can be positioned correctly so that it does not come into contact with the ear canal during the measurement, by means of a guiding tube (15) located in a rubber ball (16) that is placed at the entrance to the patient's ear (17) .
- the diagram also illustrates how the patient must lie on his side during the measurement as his ear canal must be filled with a liquid e.g. a saline solution (18) in order to ensure a good transmission efficiency of the ultrasonic waves from the probe to the wall of the ear canal (7) and back.
- a liquid e.g. a saline solution (18)
- Figure 5 shows a variation of the ultrasonic probe (19) that has a plastic tip (20) located at the end of the probe (21) to allow it to rest gently against a protective cover (22) that prevents the ear drum (23) from being damaged by the end of the probe (21).
- the measurement process with this probe is exactly the same as that used for the fibre optic/ultrasonic probe described in Figure 3 .
- Figure 6 shows another embodiment of the ultrasonic probe (24) that has a single or an array of the ultrasonic transducers (25) positioned at the end of the probe in order that they can measure the distance from the ear drum (23) to the end of the probe (21) as well as the circumferential array of transducers (8) that measure the cross-sectional shape of the wall of the ear canal (7) as shown in figure 2.
- This measurement is displayed on a monitor's screen to allow the practitioner to position the end of the probe (21) at a safe distance in front of the ear drum (23).
- An audible and or a visible warning can be incorporated into the system to alert the practitioner whenever the end of the probe (21) gets dangerously close to the ear drum (23)
- FIG 7 shows another embodiment of the ultrasonic probe where the ultrasonic transducers (26) are positioned along the body of the probe in a series of rings , each ring consisting of a number of transducers that measure the cross-sectional shape of the ear canal at a particular location. Each ring provides a measure of the ear canal's shape at a pre-determined position along an axis normal to the ear drum.
- This probe allows the measurement of the whole area of the inner surface of the ear canal without moving the probe during the measurement process .
- the resolution of this probe is governed by the number of transducers positioned around the periphery of each ring and the spacing of the transducer's rings along the body of the probe (27).
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99958399A EP1058594A2 (en) | 1998-12-10 | 1999-12-06 | Method for the manufacture of hearing aid shells |
AU15772/00A AU1577200A (en) | 1998-12-10 | 1999-12-06 | Method for the manufacture of hearing aid shells |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9827160A GB2344555A (en) | 1998-12-10 | 1998-12-10 | Method for the manufacture of hearing aid shells |
GB9827160.4 | 1998-12-10 | ||
GB9913993.3 | 1999-06-17 | ||
GBGB9913993.3A GB9913993D0 (en) | 1998-12-10 | 1999-06-17 | Method for the manufacture of hearing aid shells |
GB9914923.9 | 1999-06-28 | ||
GBGB9914923.9A GB9914923D0 (en) | 1998-12-10 | 1999-06-28 | Method for the manufacture of hearing aid shells |
GB9915481.7 | 1999-07-05 | ||
GB9915481A GB2344556A (en) | 1998-12-10 | 1999-07-05 | Method for the manufacture of hearing aid shells |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000034739A2 true WO2000034739A2 (en) | 2000-06-15 |
WO2000034739A3 WO2000034739A3 (en) | 2000-10-12 |
Family
ID=27451853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1999/004102 WO2000034739A2 (en) | 1998-12-10 | 1999-12-06 | Method for the manufacture of hearing aid shells |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1058594A2 (en) |
AU (1) | AU1577200A (en) |
GB (1) | GB2348705A (en) |
WO (1) | WO2000034739A2 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001005207A2 (en) * | 2000-06-30 | 2001-01-25 | Phonak Ag | Method for the production of otoplastics and corresponding otoplastic |
WO2002091914A1 (en) * | 2001-05-17 | 2002-11-21 | Oticon A/S | Method and apparatus for locating foreign objects in the ear canal |
US6540045B1 (en) | 2000-06-30 | 2003-04-01 | Phonak Ag | Method for manufacturing an ear device and ear device |
US6748093B2 (en) | 2001-03-26 | 2004-06-08 | Tøpholm & Westermann APS | Hearing aid with a tightening ring |
WO2004081492A2 (en) * | 2003-03-11 | 2004-09-23 | Siemens Hearing Instruments Inc | Determining the geometry and dimensions of a three-dimensional object |
US6879697B2 (en) | 2001-03-26 | 2005-04-12 | Widex A/S | Hearing aid with a face plate that is automatically manufactured to fit the hearing aid shell |
US6920414B2 (en) | 2001-03-26 | 2005-07-19 | Widex A/S | CAD/CAM system for designing a hearing aid |
US7050876B1 (en) | 2000-10-06 | 2006-05-23 | Phonak Ltd. | Manufacturing methods and systems for rapid production of hearing-aid shells |
US7162323B2 (en) | 2004-04-05 | 2007-01-09 | Hearing Aid Express, Inc. | Decentralized method for manufacturing hearing aid devices |
US7185733B2 (en) | 2000-06-30 | 2007-03-06 | Phonak Ag | Method for manufacturing an ear device and ear device |
US7206067B2 (en) | 2001-05-17 | 2007-04-17 | Oticon A/S | Method and apparatus for obtaining geometrical data relating to the ear canal of the human body |
US7251025B2 (en) | 2001-05-17 | 2007-07-31 | Oticon A/S | Method and apparatus for obtaining position data relating to a probe in the ear canal |
CN100337512C (en) * | 2001-07-09 | 2007-09-12 | 威德克斯公司 | Hearing aid and a method for testing a hearing aid |
US7625335B2 (en) | 2000-08-25 | 2009-12-01 | 3Shape Aps | Method and apparatus for three-dimensional optical scanning of interior surfaces |
US7720243B2 (en) | 2006-10-12 | 2010-05-18 | Synygis, Llc | Acoustic enhancement for behind the ear communication devices |
EP2258266A1 (en) * | 2009-06-05 | 2010-12-08 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
US8032337B2 (en) | 2001-03-02 | 2011-10-04 | 3Shape A/S | Method for modeling customized earpieces |
EP2131611A3 (en) * | 2008-06-05 | 2013-04-03 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
US9591393B2 (en) | 2001-08-10 | 2017-03-07 | Hear-Wear Technologies, Llc | BTE/CIC auditory device and modular connector system therefor |
EP4018935A1 (en) * | 2020-12-23 | 2022-06-29 | Sonova AG | Method for determining a geometry of an ear canal or a portion of an ear of a person |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2365127A (en) * | 2000-07-20 | 2002-02-13 | Jomed Imaging Ltd | Catheter |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4809708A (en) * | 1987-08-12 | 1989-03-07 | Nicolet Instrument Corporation | Method and apparatus for real bar measurements |
EP0381608A2 (en) * | 1989-02-01 | 1990-08-08 | Gn Danavox A/S | Method and apparatus for the fitting of a hearing aid, and associated probe |
EP0398237A2 (en) * | 1989-05-17 | 1990-11-22 | Ascom Audiosys Ag | Method for manufacturing hearing aids |
US5099850A (en) * | 1989-01-17 | 1992-03-31 | Olympus Optical Co., Ltd. | Ultrasonic diagnostic apparatus |
DE4135286C1 (en) * | 1991-10-25 | 1993-01-14 | Siemens Ag, 8000 Muenchen, De | Outer ear hearing passage and=or lug measurer - uses insertable vessel fillable with liq. to register individual shape for insertable housing of hearing aid |
US5211169A (en) * | 1990-11-08 | 1993-05-18 | Prism Imaging, Inc. | Blood pool imaging and analysis technique using ultrasound |
WO1994022372A1 (en) * | 1993-04-01 | 1994-10-13 | Madsen Electronics A/S | Probe for audiometric apparatus |
US5487012A (en) * | 1990-12-21 | 1996-01-23 | Topholm & Westermann Aps | Method of preparing an otoplasty or adaptive earpiece individually matched to the shape of an auditory canal |
BE1010200A3 (en) * | 1996-04-26 | 1998-03-03 | Variphone Benelux Naamloze Ven | Method and device for manufacturing earpieces |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2082769B (en) * | 1980-06-24 | 1984-06-13 | Olympus Optical Co | Improvements in ultrasonic diagnosis systems |
GB2212267B (en) * | 1987-11-11 | 1992-07-29 | Circulation Res Ltd | Methods and apparatus for the examination and treatment of internal organs |
US5331947A (en) * | 1992-05-01 | 1994-07-26 | Shturman Cardiology Systems, Inc. | Inflatable sheath for introduction of ultrasonic catheter through the lumen of a fiber optic endoscope |
GB2293240B (en) * | 1994-09-15 | 1998-05-20 | Intravascular Res Ltd | Ultrasonic visualisation method and apparatus |
US5830144A (en) * | 1995-03-28 | 1998-11-03 | Vesely; Ivan | Tracking data sheath |
US5876345A (en) * | 1997-02-27 | 1999-03-02 | Acuson Corporation | Ultrasonic catheter, system and method for two dimensional imaging or three-dimensional reconstruction |
-
1999
- 1999-12-06 AU AU15772/00A patent/AU1577200A/en not_active Abandoned
- 1999-12-06 EP EP99958399A patent/EP1058594A2/en not_active Withdrawn
- 1999-12-06 WO PCT/GB1999/004102 patent/WO2000034739A2/en not_active Application Discontinuation
- 1999-12-10 GB GB9929197A patent/GB2348705A/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4809708A (en) * | 1987-08-12 | 1989-03-07 | Nicolet Instrument Corporation | Method and apparatus for real bar measurements |
US5099850A (en) * | 1989-01-17 | 1992-03-31 | Olympus Optical Co., Ltd. | Ultrasonic diagnostic apparatus |
EP0381608A2 (en) * | 1989-02-01 | 1990-08-08 | Gn Danavox A/S | Method and apparatus for the fitting of a hearing aid, and associated probe |
EP0398237A2 (en) * | 1989-05-17 | 1990-11-22 | Ascom Audiosys Ag | Method for manufacturing hearing aids |
US5056204A (en) * | 1989-05-17 | 1991-10-15 | Ascom Audiosys Ag | Method of producing hearing aids |
US5211169A (en) * | 1990-11-08 | 1993-05-18 | Prism Imaging, Inc. | Blood pool imaging and analysis technique using ultrasound |
US5487012A (en) * | 1990-12-21 | 1996-01-23 | Topholm & Westermann Aps | Method of preparing an otoplasty or adaptive earpiece individually matched to the shape of an auditory canal |
DE4135286C1 (en) * | 1991-10-25 | 1993-01-14 | Siemens Ag, 8000 Muenchen, De | Outer ear hearing passage and=or lug measurer - uses insertable vessel fillable with liq. to register individual shape for insertable housing of hearing aid |
WO1994022372A1 (en) * | 1993-04-01 | 1994-10-13 | Madsen Electronics A/S | Probe for audiometric apparatus |
BE1010200A3 (en) * | 1996-04-26 | 1998-03-03 | Variphone Benelux Naamloze Ven | Method and device for manufacturing earpieces |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001005207A3 (en) * | 2000-06-30 | 2001-12-06 | Phonak Ag | Method for the production of otoplastics and corresponding otoplastic |
WO2002003756A1 (en) * | 2000-06-30 | 2002-01-10 | Phonak Ag | Method for producing in-ear hearing aids and in-ear hearing aid |
US6540045B1 (en) | 2000-06-30 | 2003-04-01 | Phonak Ag | Method for manufacturing an ear device and ear device |
US7185733B2 (en) | 2000-06-30 | 2007-03-06 | Phonak Ag | Method for manufacturing an ear device and ear device |
WO2001005207A2 (en) * | 2000-06-30 | 2001-01-25 | Phonak Ag | Method for the production of otoplastics and corresponding otoplastic |
US6827178B2 (en) | 2000-06-30 | 2004-12-07 | Phonak Ag | Method for manufacturing an ear device and ear device |
US6863151B2 (en) | 2000-06-30 | 2005-03-08 | Phonak Ag | Method for manufacturing an ear device and ear device |
EP1555851A3 (en) * | 2000-06-30 | 2006-08-16 | Phonak Ag | Method for the production of otoplastics and corresponding otoplastic |
US7625335B2 (en) | 2000-08-25 | 2009-12-01 | 3Shape Aps | Method and apparatus for three-dimensional optical scanning of interior surfaces |
US7050876B1 (en) | 2000-10-06 | 2006-05-23 | Phonak Ltd. | Manufacturing methods and systems for rapid production of hearing-aid shells |
US7328080B2 (en) | 2000-10-06 | 2008-02-05 | Phonak Ltd. | Manufacturing methods and systems for rapid production of hearing-aid shells |
US8032337B2 (en) | 2001-03-02 | 2011-10-04 | 3Shape A/S | Method for modeling customized earpieces |
US6748093B2 (en) | 2001-03-26 | 2004-06-08 | Tøpholm & Westermann APS | Hearing aid with a tightening ring |
US6920414B2 (en) | 2001-03-26 | 2005-07-19 | Widex A/S | CAD/CAM system for designing a hearing aid |
US6879697B2 (en) | 2001-03-26 | 2005-04-12 | Widex A/S | Hearing aid with a face plate that is automatically manufactured to fit the hearing aid shell |
US7694418B2 (en) | 2001-03-26 | 2010-04-13 | Widex A/S | Hearing aid with a face plate that is automatically manufactured to fit the hearing aid shell |
US7206067B2 (en) | 2001-05-17 | 2007-04-17 | Oticon A/S | Method and apparatus for obtaining geometrical data relating to the ear canal of the human body |
US7251025B2 (en) | 2001-05-17 | 2007-07-31 | Oticon A/S | Method and apparatus for obtaining position data relating to a probe in the ear canal |
US7529577B2 (en) | 2001-05-17 | 2009-05-05 | Oticon A/S | Method and apparatus for locating foreign objects in the ear canal |
WO2002091914A1 (en) * | 2001-05-17 | 2002-11-21 | Oticon A/S | Method and apparatus for locating foreign objects in the ear canal |
CN100337512C (en) * | 2001-07-09 | 2007-09-12 | 威德克斯公司 | Hearing aid and a method for testing a hearing aid |
US9591393B2 (en) | 2001-08-10 | 2017-03-07 | Hear-Wear Technologies, Llc | BTE/CIC auditory device and modular connector system therefor |
WO2004081492A3 (en) * | 2003-03-11 | 2004-11-04 | Siemens Hearing Instr Inc | Determining the geometry and dimensions of a three-dimensional object |
WO2004081492A2 (en) * | 2003-03-11 | 2004-09-23 | Siemens Hearing Instruments Inc | Determining the geometry and dimensions of a three-dimensional object |
US7162323B2 (en) | 2004-04-05 | 2007-01-09 | Hearing Aid Express, Inc. | Decentralized method for manufacturing hearing aid devices |
US7720243B2 (en) | 2006-10-12 | 2010-05-18 | Synygis, Llc | Acoustic enhancement for behind the ear communication devices |
EP2131611A3 (en) * | 2008-06-05 | 2013-04-03 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
US8840558B2 (en) | 2008-06-05 | 2014-09-23 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
EP2258266A1 (en) * | 2009-06-05 | 2010-12-08 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
US9433373B2 (en) | 2009-06-05 | 2016-09-06 | Starkey Laboratories, Inc. | Method and apparatus for mathematically characterizing ear canal geometry |
EP4018935A1 (en) * | 2020-12-23 | 2022-06-29 | Sonova AG | Method for determining a geometry of an ear canal or a portion of an ear of a person |
Also Published As
Publication number | Publication date |
---|---|
AU1577200A (en) | 2000-06-26 |
GB2348705A (en) | 2000-10-11 |
WO2000034739A3 (en) | 2000-10-12 |
EP1058594A2 (en) | 2000-12-13 |
GB9929197D0 (en) | 2000-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2000034739A2 (en) | Method for the manufacture of hearing aid shells | |
EP1392153B1 (en) | Method and apparatus for obtaining geometrical data relating to a canal | |
US7529577B2 (en) | Method and apparatus for locating foreign objects in the ear canal | |
CN102223840B (en) | A photoacoustic imaging device | |
EP1392164B1 (en) | Method for obtaining geometrical data relating to the ear canal of the human body | |
EP2672896B1 (en) | Acoustic-wave acquisition apparatus | |
KR100713726B1 (en) | Three-dimensional model | |
US20030139658A1 (en) | Method for the reconstruction of the geometry of the inner surface of a cavity | |
EP4052639A2 (en) | Apparatus and method of image registration | |
EP1392155B1 (en) | Method and apparatus for obtaining position data relating to a probe in the ear canal | |
US20070127756A1 (en) | Method and Apparatus for Ear Canal Surface Modeling Using Optical Coherence Tomography Imaging | |
GB2344556A (en) | Method for the manufacture of hearing aid shells | |
JP2006501930A (en) | Minimally invasive optical-acoustic imaging system and method | |
EP2378977A2 (en) | Rotational intravascular ultrasound probe and method of manufacturing the same | |
WO2015162186A1 (en) | Optical sensor for a catheter | |
BE1010200A3 (en) | Method and device for manufacturing earpieces | |
GB2344555A (en) | Method for the manufacture of hearing aid shells | |
US20090306517A1 (en) | Method and apparatus for mathematically characterizing ear canal geometry | |
US4608869A (en) | Single particle detection system | |
WO2006025725A1 (en) | Method of determining a parameter representing an acoustic property of a material | |
KR20160042647A (en) | Medical needle for improving ultrasonic monitoring measurement angle | |
JPH09276273A (en) | Ultrasonic diagnostic device | |
Dwyer-Joyce et al. | A comparative study of ultrasonic direct contact, immersion, and layer resonance methods for assessment of enamel thickness in teeth | |
EP1468246A2 (en) | Method for the reconstruction of the geometry of the inner surface of a cavity | |
JPH0910254A (en) | Manufacture of hearing aid shell and manufacturing device therefor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref country code: AU Ref document number: 2000 15772 Kind code of ref document: A Format of ref document f/p: F |
|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1999958399 Country of ref document: EP |
|
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
WWP | Wipo information: published in national office |
Ref document number: 1999958399 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999958399 Country of ref document: EP |