WO1997042475A1 - Capuchon protecteur pour thermometre a infrarouge - Google Patents

Capuchon protecteur pour thermometre a infrarouge Download PDF

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Publication number
WO1997042475A1
WO1997042475A1 PCT/US1997/007509 US9707509W WO9742475A1 WO 1997042475 A1 WO1997042475 A1 WO 1997042475A1 US 9707509 W US9707509 W US 9707509W WO 9742475 A1 WO9742475 A1 WO 9742475A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
probe
sidewall
window
film window
Prior art date
Application number
PCT/US1997/007509
Other languages
English (en)
Inventor
Jacob Fraden
Joseph P. Brown
Robert P. Lackey
Randall R. Howe
Heinz Bultges
Wolfram Debus
Gunther Bautz
Helmut Franke
Original Assignee
Thermoscan, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/643,841 external-priority patent/US5795067A/en
Application filed by Thermoscan, Inc. filed Critical Thermoscan, Inc.
Priority to EP97924573A priority Critical patent/EP0932821A1/fr
Priority to JP09540088A priority patent/JP2000510721A/ja
Publication of WO1997042475A1 publication Critical patent/WO1997042475A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/021—Probe covers for thermometers, e.g. tympanic thermometers; Containers for probe covers; Disposable probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity

Definitions

  • the present invention relates generally to protective covers for infrared sensor systems.
  • the present invention relates to an enhanced protective cover design that permits passage of infrared radiation with a minimal of distortion while insuring sanitary protection of an infrared clinical thermometer.
  • Past patient temperature measurement systems have migrated from slow mercury thermometers (oral and rectal) to electronic contact sensors (predictive thermometers using resistive contact elements) to more recent non-contact systems based on infrared (“IR”) sensing.
  • IR infrared
  • a particularly successful clinical thermometer corresponds to U.S. Patent No. Re: 34,789 to Fraden (the "Fraden IR Thermometer") the contents of which are incorporated by reference as if restated in full.
  • the Fraden design utilizes a highly sensitive infrared detector engineered with a specific optic system to permit accurate assessment of radiation from the tympanic membrane of a patient's ear. The sensed radiation is converted to a temperature reading having an impressive correlation to actual patient temperature.
  • the optics of an infrared thermometer must remain free and clear of ear wax.
  • use of the minimally intrusive infrared thermometers of the Fraden type is advantageously implemented with a sanitary barrier precluding contact between the sensor and the patient's ear.
  • Sanitary barriers for clinical thermometers are not new. Indeed, many older clinical thermometers based on contacting mucous membranes for sensing temperature required the use of a disposable cover as a sanitary barrier, which was discarded after each use.
  • Early sanitary cover designs were quite simple in concept. The basic structure applied a rigid wall for handling purposes combined with a thin film contiguous with the contact sensor element. The film was thin and often stretched to minimize the thermal barrier to conductive heat transfer.
  • Exemplary early cover structures are depicted in U.S. Patent No. 3,822,593 to Oudawaal and Patent No. 3,987,899 to Vyprachticky. These early covers were routinely made from inexpensive plastics such as polyethylene and polypropylene and either injected molded as one unitary structure or formed in two parts - bonding a thin film onto the more rigid body portion. Either way, the resulting cover would be attached to the sensor and then the combined structure placed, e.g., in the patient's mouth to obtain the temperature reading. After the reading, the cover is detached and discarded.
  • Early infrared thermometers also employed disposable covers. These early disposable covers for infrared thermometers originally were closely modeled on the above-described covers for contact thermometers.
  • U.S. Patent Nos. 5,293,862 and 5,179,936 to O ⁇ ara, et al. disclose a two-piece cover design wherein a thin transparent film is bonded to a rigid tubular body forming a disposable cover for an infrared thermometer.
  • the manufacturing process of this cover design causes the formation of wrinkles in the thin transparent film.
  • Film wrinkles of this nature may interfere with infrared transmission between the tympanic membrane of the ear and the IR sensor of the thermometer. Accordingly, the use of this probe cover design required the removal of these wrinkles by stretching the film over the infrared sensor.
  • stretching the film to remove wrinkles may create other sources of potential measurement inaccuracies.
  • a film that is stretched may stretch in a non-uniform manner creating a "lensing" effect that may distort transmitted infrared radiation.
  • the stretched film may result in a realignment of the polymer molecular structure causing variations in both the reflective and absorptive properties of the film.
  • such prior art infrared probe covers that require stretching to remove wrinkles or other undesirable surface characteristics in the film window of the disposable cover may possess somewhat unpredictable transmission properties when fitted onto a probe of an infrared thermometer.
  • U.S. Patent No. 4,911 ,559 issued to Meist and Suszinski discloses an infrared probe cover susceptible to the effects of stretching of the film.
  • the Meist and Suszinski patent teaches a laminated probe cover where the polymer film significantly stretches when being fitted over an infrared thermometer probe. The effects caused by this stretching of the film invariably affects the transmissivity of the film in unpredictable ways that may result in errors in temperature measurement.
  • Secondary radiation refers to the infrared radiation that the cover emits relative to the infrared radiation emitted by the primary source, viz., the tympanic membrane of the ear It has been found that it is important to minimize the fluctuations of secondary radiation from all sources including that of the cover film window Secondary radiation triggered by unpredictable heat flows from the ear canal to the film window may induce measurement inaccuracies in the clinical thermometer.
  • Still another object of this invention is to provide a probe cover which enhances the field of view of the infrared thermometer, thereby minimizing errors in the placement of the thermometer probe within the ear canal.
  • the inventive cover includes a side wall section that is designed to engage the thermometer probe section and position the transparent film window in front of the sensor.
  • the preferred shape is a short truncated cone or tubular structure open at a first end and closed with the film window positioned at a second and opposing end of the tubular body. The open end is dimensioned and adapted so that it interfaces with the probe tip of the thermometer to releasably hold the cover in an automatically centered position in relation to the probe sensor.
  • the IR transmissive film is preferably a circular window with a circumferential strain relief collar extending around the window perimeter.
  • This collar defines and controls the shape of the film window. When placed on the thermometer, this collar engages a corresponding contact rim on the probe, thus positioning the film window in the proper optical axis for the IR sensor. Furthermore, the collar provides a strain relief capability corresponding to its deformation under load that insures that the window section is held in an "unstretched" condition. The collar location and configuration further acts to maintain the proper optical axis when the thermometer is in use.
  • the disposable cover includes a side wall that is kept relatively thin and thus preferentially deformed relative to the film window when forces are applied to the cover.
  • the collar structure can follow one of several distinct design approaches, each having the common goal of either eliminating the transfer of forces applied to the cover side wall (isolation), or creating counter forces in reaction to the forces applied to the side wall (strain relief) where these counter forces are of a nature and direction that precludes film stretch.
  • the functional collar design acts to deflect the film window away from contact with the ear canal, while enhancing the overall field of view for the sensor.
  • Another design feature is directed to the cover retention means placed, on the wide, open end of the cover and configured to engage a pair of retention "ears" on the base of the probe. Controlled positioning of the cover vis-a-vis the probe is used to enhance window stability and minimize probe tip contact with the window. This is accomplished by creating a tight engagement rim having an expanded radius. Separately, a small air slot is provided as a pressure relief point.
  • Figure 1 depicts a probe cover being placed on the probe of an infrared thermometer
  • Figure 2 is a conventional probe cover with a stretched film window portion;
  • Figure 3 depicts an improved probe cover with recessed front end;
  • Figure 4 is an enlarged portion of the front end of the improved probe cover;
  • Figure 5 depicts corrugated optical portion of a probe cover;
  • Figure 6 is an exploded view of the corrugated film at the optical portion of a probe cover
  • Figure 7 depicts a probe cover with a collar frame for the film window
  • Figure 8 depicts a variation of the cover shown in Fig. 7;
  • Figure 9 depicts a cut-out view of a film window with a dimpled surface
  • Figure 10 depicts a probe cover collar structure with variable thickness strain relief
  • Figures 11 and 11A depict a probe cover collar structures with collapsing strain relief
  • Figure 12 is another embodiment depicting collapsing strain relief
  • Figure 13 provides a variation of the improved probe cover of Fig. 12;
  • Figures 14A and 14B depict a further cross-sectional diagram of an inventive cover in accordance with the present invention and an enlarged view of its collar structure also in cross-section;
  • Figures 15A, 15B, and 15C depict a novel probe cover structure with retention rim, an enlarged view of the retention rim, and view of selected reference dimensions of the probe cover.
  • the present invention is directed to novel probe cover configurations engineered for enhanced use with clinical thermometers applying infrared temperature detection.
  • inventive probe cover configuration provides an infrared transparent window that, in its initial, stress-free condition, is optimized for infrared radiation transmission.
  • the window is formed of a highly transmissive polymer material and configured to minimize the potential error sources found in prior art designs.
  • the inventive probe design is further engineered to prevent subsequent forces from distorting the IR window during use.
  • the first distortion force is applied during the probe cover installation onto the thermometer probe tip .
  • the probe cover should be affixed to the probe in a repeatably accurate operation. This attachment process invariably imparts a force to the cover structure. It is, therefore, a feature of the present invention to isolate the IR window portion of the cover from the attachment forces encountered during cover installation.
  • the second source of distortion forces to the cover arises during a temperature reading.
  • the cover/probe is inserted into the ear canal to create the requisite optical axis between the tympanic membrane of the ear and the IR sensor imbedded in the clinical thermometer.
  • the sliding action of the cover wall against an inner ear canal creates small frictional forces on the cover. Accordingly, it is a second feature of the present invention to isolate the IR transmission window from these frictional forces that may arise during the actual temperature acquisition process.
  • the force isolation described above is accomplished by use of a collar structure juxtaposed between the side wall of the cover and the film window.
  • the term "collar” is broadly used to include one or more structural elements that are applied individually or in combination to either isolate the window from wall forces, enhance sensor view, minimize sensor - ear canal contact or create counter forces to negate the translation of wall forces to the film window.
  • enhanced cover design is enabled by selective dimensioning of the retention rim of the probe cover relative to the corresponding probe retaining ears.
  • the cover rim or "locking groove” is sized to fit snugly on the retaining ears of the probe by establishing two separate planar points of contact, thus eliminating any "play” that might otherwise permit such freedom of movement. This is accomplished by creating a tight tolerance between the cover locking groove - and its circumferential dimension, and the circumference defined by the outer position of the retaining ears. This alone, however, may cause the cover placement procedure to require an excessive amount of force.
  • Figs. 1 and 2 and the general arrangement of the cover - IR thermometer depicted therein.
  • Fig. 1 illustrates the positioning of an infrared probe cover 8 having optical film window 10 as placed over the elongated probe 2 of infrared thermometer 1 (as illustrated by phantom lines).
  • probe 2 is appropriately sized for insertion within the ear canal of a human or animal, but also can be used for taking temperature measurements from any other body cavity or surface.
  • Probe 2 houses an infrared sensor 3 and optical wave guide 4 and is able to measure the transmission of thermal radiation from a patient's ear 5, which emanates from the tympanic membrane 7 of ear canal 6. It should be noted that the temperature of the tympanic membrane 7 represents an accurate reading of the interior temperature of a patient's body.
  • the probe cover 8 is positioned over probe 2 of the thermometer and aligned along optical axis 9 of the probe such that there can be no physical contact between probe 2 and any part of the patient's body, particularly ear canal 6. This insures sanitary operation.
  • the probe cover consists of three primary portions: a back end portion 30 for engaging the probe cover with infrared thermometer 1 along probe 2, an intermediate sidewall 31 which extends the length of probe 2, and an optical front end portion, including film window 10 with the requisite optical and thermal properties necessary for the accurate transmission of infrared radiation and, accordingly, to provide an accurate measurement of temperature.
  • the material for the probe cover is a polymer such as polyethylene, polypropylene, or copolymers thereof having a transparency in the spectral range between 3 ⁇ m and 15 ⁇ m.
  • the polymer used can be optically enhanced by the addition of clarifying agents in the polymeric matrix.
  • the sidewall material be the same as the film window. If however, the cover is a unitary structure, the material will be the same for both the side wall and film window. See, e.g., U.S. Patent No. 5,088,834 to Howe, et al. disclosing a unitary cover configuration for an IR thermometer (the contents of which are incorporated by reference).
  • the preferred manufacturing process is by vacuum forming a plurality of separate covers from a large sheet of thin polypropylene co-polymer.
  • Alternative techniques for manufacturing the cover include other thermoforming techniques and injection molding. If made of separately cast components, the cover components are connected by means of bonding, ultrasonic welding, clamping or adhesive joining. If separate, the cover window material should be highly transmissive to IR radiation when joined or attache ⁇ to the sidewall.
  • Fig. 2 provides a cross-section view of a prior art probe cover 21 positioned over probe 2.
  • probe 2 has optical axis 9, wave guide 4 with wave guide window 15, and rim 11.
  • stress is applied to the optical film window 10, resulting in a stretching of the film of the optical front end.
  • back end portion 30 of cover 21 engages with probe 2 of the infrared thermometer (not shown) and sidewall 31 extends over the length of probe 2.
  • the resulting changes in thickness of the film of the film window 10 due to stretching causes inevitable variations in the optical transmissivity of the front end.
  • film window 10 when stretched, film window 10 may come into contact with the patient, absorbing heat and causing a temperature rise that may alter the temperature reading of the infrared thermometer. Accordingly, in prior art probe covers of this type, the stretched film window may cause the infrared thermometer to render inaccurate readings.
  • Fig. 3 illustrates a cross-section view of a probe cover 8, depicting a first embodiment of the present invention, as positioned over probe 2.
  • Film window 10 of the cover forms a recess connected to sidewall 31 via collar 34 comprising a sill 14 with first fold 12 and second fold 16
  • the depth of the recess is, preferably, in the range from 0 2mm to 2 0mm Sill 14 provides perimeter stiffness to the structure of the probe cover, particularly to the front end portion, in addition to providing a strain relief function for the film window Sill 14, which may be circular in shape, consists of folded polymer material disposed around the periphery of film window 10
  • First fold 12 is provided adjacent the recess of the film window 10 and second fold 16 is provided adjacent the sidewall 31
  • the cover interfaces with nm 11 of the probe at second fold 16 of sill 14
  • the probe cover 8 is dimensioned for an interference fit with probe 2 and since nm 11 of probe 2 closely
  • Fig 4 illustrates an exploded cross-section view of a portion of probe cover 8 whereby the thickness of the polymer material of the cover is shown in more detail
  • increased thickness of the sill 14, second fold 16 and/or other portions of the cover may be provided
  • Increased thickness near sill 14 and/or lower fold 16 may be beneficial for enhancing the strain relief function, as well as ensuring a better engagement by the cover onto the thermometer probe.
  • Fig. 5 illustrates a cross-section view of an alternative embodiment of the probe cover for the present invention.
  • This embodiment is beneficial for further enhancing strain relief in the front end of the cover.
  • cover 8 has a corrugated film window 23 with concentrically arranged ridges forming a series of folds 17 and a central flat 18, which represents a non-corrugated area.
  • flat 18 should have a diameter comparable with that of wave guide 4.
  • flat 18 may be eliminated so that the corrugated surface extends to optical axis 9.
  • Fig. 5 is illustrated in Fig. 6.
  • the multiple folds 17 of corrugated film window 23 of probe cover 8 provides the additional benefit of increasing the angle of view of the infrared thermometer.
  • folds 17 may be provided with a varied thickness so that the folds consist of thick portions 20 and thin portions 19.
  • the variations in thickness of the folds provide a lensing effect due to the refractive properties of the polymer material used for the cover.
  • infrared radiation 22 (as shown by the dotted line) which may be directed from a wide angle direction onto the corrugated film window 23 is caused to refract at a more acute angle toward the wave guide due to the varied thickness of folds 17.
  • wide angle infrared radiation 22 is reflected from the flat surface of the cover and, consequently, does not enter the probe.
  • Figs. 7 and 8 provide enlarged cross-section views of a portion of the film window 10 of a probe cover in accordance with the present invention.
  • collar 34 is provided around the film window 10.
  • Fig. 7 illustrates such a probe cover collar with raised sill 14
  • Fig. 8 illustrates such a probe cover collar with a flat sill.
  • collar 34 provides a semi-rigid frame for the film window 10, thus ensuring that the film window remains free from forces otherwise applied to sidewall 31 and after placement of the cover onto the probe.
  • Fig. 9 illustrates a cross-section of another embodiment of a probe cover in accordance with the present invention.
  • This particular embodiment offers an alternative way to relieve the stress susceptible in the film window of the probe cover, while minimizing contact of the cover with a patient's skin.
  • the cover is positioned over probe 2, with the film window 10 positioned over wave guide window 15 and containing uniformly arranged indentations or dimples 33.
  • These dimples 33 may be either convex or concave.
  • the dimples provide stiffening properties to the front end of the probe cover to avoid stretching that otherwise might occur pursuant to installation/use forces applied to sidewall 31.
  • the dimples make possible contact with the skin less critical, since the contact area of the front end is reduced.
  • Fig. 9 illustrates a probe cover embodiment without a sill
  • a dimpled probe cover may also be provided having a sill structure (not shown). This choice would depend on the actual design of the infrared thermometer probe used.
  • Figs. 10-13 illustrate enlarged cross-section views of several variations of a probe cover in accordance with the present invention having collar structure that includes a collapsible sill 14.
  • forces for installing or using the cover on sidewall 31 create compensating forces in collar 34 that prevent film window stretch, and, in fact, cause the film window to collapse.
  • Fig. 10 illustrates a probe cover having a membrane of varied thickness whereby strain relief collar 34 is provided adjacent to thin wall 37, which is connected to sidewall 31.
  • strain relief collar 34 is provided adjacent to thin wall 37, which is connected to sidewall 31.
  • rim 11 of the probe engages with collar 34, as illustrated by phantom lines 38.
  • Fig. 11 illustrates another embodiment of a probe cover having collapsing sill 14.
  • the cover is positioned over probe 2 and engaged with rim 11.
  • Collar 34 comprises engagement fold 42 and fold angle ⁇ in relation to optical axis 9.
  • the probe 2 engages with the cover at a position 41 which causes rim 11 to move fold angle 42 into position 39, as indicated by the labelled thin line.
  • centripetal force F2 is created and sill 14 is collapsed toward optical axis 9, thus preventing film window 10 from being stretched.
  • the smaller the fold angle ⁇ the greater the centripetal force F2.
  • Fig. 11A illustrates a probe cover based on Fig. 11 and having thin wall 37 adjacent to sill 14.
  • angle ⁇ which is defined by rim 11 at engagement point 41 and fold 42, results in an evident clockwise collapsing of the sill 14 in direction 40, as indicated by the clockwise arrow, thus, preventing film window 10 from being stretched.
  • the smaller the fold angle (a) the greater the centripetal force that results when the cover is positioned onto the probe.
  • Fig. 12 illustrates another embodiment of a probe cover having a collapsing sill. As shown in Fig.
  • Fig. 13 a probe ⁇ over design is depicted that corresponds closely to that of Fig. 12, Dut engagement fold 42 is placed outside of sill 14 and makes contact on the periphery of rim 11 , causing film window 10 to collapse as depicted by the ghost lines.
  • the structure requires smaller curvature of fold 42 which may simplify the manufacturing process.
  • FIG. 14A the general probe cover design of Fig. 13 is depicted in Fig. 14A, with an enlargement of collar 34 shown in Fig. 14B.
  • collar 34 comprises fold 42 and sill 14 linking film window 10 to sidewall 31.
  • the sidewall 31 further comprises longitudinal ridges 80 for increasing wall stiffness and permitting the use of a thinner and more elastic sidewall 31.
  • Curves 70-72 are anchor points for attachment onto the IR probe (not shown).
  • the cover structure is very similar to that disclosed in Figures 1 and 14 showing a tapered cone with an IR window at the forward end.
  • side wall 31 of the tapered cover has a variable thickness, gaining in thickness at the base and becoming thinner at the tip of the cover.
  • the slightly curved sidewall 31 has a radius that provides a thin air gap (thermal insulating) between the cover and speculum, when installed.
  • This probe cover design utilizes the thickened base region as a more rigid structure to enhance attachment to the probe itself via retention ears.
  • the cover retention rim or “locking groove” 71 engages the ears on the probe (or speculum) to positively retain the cover with the window positioned over the speculum opening and wave guide, as shown in the enlarged view of Fig. 15B.
  • the locking groove 71 must have an elastic hoop with diameter, Q, that is able to stretch over the outer diameter, associated with the retention ears.
  • the locking groove needs to have sufficiently tight tolerances to prevent "play” after the cover is installed on the probe. This "play” may otherwise contribute to vertical movement of the cover in response to frictional forces on the cover sidewall, causing the cover to move downward on the probe and engaging the probe tip into window 10.
  • the design depicted in Figure 15C provides for a somewhat larger radius R, of curvature associated with locking groove 71.
  • the cover rim has a tighter tolerance, and fits snugly up to retention ears of the probe with zero positive clearance at planar positions 90 and 91.
  • the slightly larger radius permits engagement between the cover and retention ears with less force, while the slightly tighter tolerance eliminates the "play" associated with cover after it is installed on the probe.
  • a pressure relief arrangement is shown in Fig. 15A and provided by vent 88 and pocket 89, placed at intervals (e.g., 90 degrees) around the perimeter of the sidewall/locking groove.

Abstract

Un premier capuchon protecteur (8) destiné à la sonde (2) d'un thermomètre à infrarouge (1) comprend une paroi latérale mince (31) liée à une fenêtre (10) à couche mince par une structure de collier (34). La structure de collier (34) présente un ou plusieurs rebords (14), un premier pli (12) et un second pli (16) recevant les éventuelles forces appliquées sur la paroi latérale (31), de manière à empêcher que ces forces ne se transforment en une force d'étirement appliquée contre la fenêtre (10). Un second capuchon protecteur (8) comprend une paroi latérale (31) entre une fenêtre (10) et un bord de retenue (71) du capuchon destiné à retenir le capuchon (8) avec la fenêtre (10) positionnée sur l'ouverture de la sonde (2). Le bord (71) de retenue du capuchon présente des points de contact avec la sonde (2) au niveau de deux emplacements séparés plans (90, 91) sur le bord (71), de manière à former un ajustage à frottement doux empêchant le mouvement vertical du capuchon (8) une fois celui-ci (8) installé sur la sonde (2).
PCT/US1997/007509 1996-05-07 1997-05-05 Capuchon protecteur pour thermometre a infrarouge WO1997042475A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97924573A EP0932821A1 (fr) 1996-05-07 1997-05-05 Capuchon protecteur pour thermometre a infrarouge
JP09540088A JP2000510721A (ja) 1996-05-07 1997-05-05 赤外線温度計用の保護カバー

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/643,841 1996-05-07
US08/643,841 US5795067A (en) 1996-05-07 1996-05-07 Enhanced protective lens cover for an infrared thermometer
US71696096A 1996-09-20 1996-09-20
US08/716,960 1996-09-20

Publications (1)

Publication Number Publication Date
WO1997042475A1 true WO1997042475A1 (fr) 1997-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/007509 WO1997042475A1 (fr) 1996-05-07 1997-05-05 Capuchon protecteur pour thermometre a infrarouge

Country Status (5)

Country Link
EP (1) EP0932821A1 (fr)
JP (1) JP2000510721A (fr)
CN (1) CN1217057A (fr)
CA (1) CA2251268A1 (fr)
WO (1) WO1997042475A1 (fr)

Cited By (12)

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EP0969273A1 (fr) * 1998-07-02 2000-01-05 Advanced Monitors Corp. Capuchon protecteur pour thermomètre à infrarouge
US6319206B1 (en) 1999-11-24 2001-11-20 Exergen Corporation Temporal thermometer disposable cap
US6347243B1 (en) 1998-03-05 2002-02-12 Advanced Monitors Corp. Probe cover for infrared thermometer
CN1299637C (zh) * 1998-10-20 2007-02-14 欧姆龙健康医疗事业株式会社 红外线温度计
WO2010002313A1 (fr) * 2008-07-03 2010-01-07 Ascendia Ab Capuchon de sonde à ultrason et son procédé de fabrication
WO2018106126A1 (fr) * 2016-12-07 2018-06-14 Fisher And Paykel Healthcare Limited Agencements de détection pour dispositifs médicaux
US10974015B2 (en) 2012-03-15 2021-04-13 Fisher & Paykel Healthcare Limited Respiratory gas humidification system
US11129956B2 (en) 2012-04-27 2021-09-28 Fisher & Paykel Healthcare Limited Usability features for respiratory humidification system
US11324911B2 (en) 2014-06-03 2022-05-10 Fisher & Paykel Healthcare Limited Flow mixers for respiratory therapy systems
US11559653B2 (en) 2014-02-07 2023-01-24 Fisher & Paykel Healthcare Limited Respiratory humidification system
EP4155695A1 (fr) * 2021-09-28 2023-03-29 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Gaine pour appareil de mesure de température auriculaire et dispositif de mesure de température auriculaire
US11801360B2 (en) 2013-09-13 2023-10-31 Fisher & Paykel Healthcare Limited Connections for humidification system

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CA2750838C (fr) * 2008-12-29 2016-11-22 Kaz Europe Sa Capuchon de sonde avec caracteristique d'appariement pour un thermometre medical
CN110736553B (zh) * 2018-07-18 2021-06-01 热映光电股份有限公司 耳温枪用探头套
CN111854959B (zh) * 2019-04-26 2023-10-24 肖殿清 一种耳机式远红外连续耳温及生理参数测量装置

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US6347243B1 (en) 1998-03-05 2002-02-12 Advanced Monitors Corp. Probe cover for infrared thermometer
EP0969273A1 (fr) * 1998-07-02 2000-01-05 Advanced Monitors Corp. Capuchon protecteur pour thermomètre à infrarouge
US6152596A (en) * 1998-07-02 2000-11-28 Advanced Monitors Corporation Protective cover for infrared thermometer
CN1299637C (zh) * 1998-10-20 2007-02-14 欧姆龙健康医疗事业株式会社 红外线温度计
US6319206B1 (en) 1999-11-24 2001-11-20 Exergen Corporation Temporal thermometer disposable cap
US6932775B2 (en) 1999-11-24 2005-08-23 Exergen Corporation Temporal thermometer disposable cap
WO2010002313A1 (fr) * 2008-07-03 2010-01-07 Ascendia Ab Capuchon de sonde à ultrason et son procédé de fabrication
US10974015B2 (en) 2012-03-15 2021-04-13 Fisher & Paykel Healthcare Limited Respiratory gas humidification system
US11129956B2 (en) 2012-04-27 2021-09-28 Fisher & Paykel Healthcare Limited Usability features for respiratory humidification system
US11878093B2 (en) 2012-04-27 2024-01-23 Fisher & Paykel Healthcare Limited Usability features for respiratory humidification system
US11801360B2 (en) 2013-09-13 2023-10-31 Fisher & Paykel Healthcare Limited Connections for humidification system
US11559653B2 (en) 2014-02-07 2023-01-24 Fisher & Paykel Healthcare Limited Respiratory humidification system
US11324911B2 (en) 2014-06-03 2022-05-10 Fisher & Paykel Healthcare Limited Flow mixers for respiratory therapy systems
US11712536B2 (en) 2014-06-03 2023-08-01 Fisher & Paykel Healthcare Limited Flow mixers for respiratory therapy systems
WO2018106126A1 (fr) * 2016-12-07 2018-06-14 Fisher And Paykel Healthcare Limited Agencements de détection pour dispositifs médicaux
US11351332B2 (en) 2016-12-07 2022-06-07 Fisher & Paykel Healthcare Limited Sensing arrangements for medical devices
AU2017371480B2 (en) * 2016-12-07 2022-11-03 Fisher And Paykel Healthcare Limited Sensing arrangements for medical devices
EP4155695A1 (fr) * 2021-09-28 2023-03-29 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Gaine pour appareil de mesure de température auriculaire et dispositif de mesure de température auriculaire

Also Published As

Publication number Publication date
JP2000510721A (ja) 2000-08-22
EP0932821A4 (fr) 1999-08-04
CN1217057A (zh) 1999-05-19
EP0932821A1 (fr) 1999-08-04
CA2251268A1 (fr) 1997-11-13

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