EP1116498A2 - Tête d'essai - Google Patents

Tête d'essai Download PDF

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Publication number
EP1116498A2
EP1116498A2 EP00122491A EP00122491A EP1116498A2 EP 1116498 A2 EP1116498 A2 EP 1116498A2 EP 00122491 A EP00122491 A EP 00122491A EP 00122491 A EP00122491 A EP 00122491A EP 1116498 A2 EP1116498 A2 EP 1116498A2
Authority
EP
European Patent Office
Prior art keywords
air line
test head
closure element
head according
air
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP00122491A
Other languages
German (de)
English (en)
Other versions
EP1116498A3 (fr
Inventor
Willi Dipl.-Ing. Stumpf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP1116498A2 publication Critical patent/EP1116498A2/fr
Publication of EP1116498A3 publication Critical patent/EP1116498A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B27/00—Methods or devices for testing respiratory or breathing apparatus for high altitudes

Definitions

  • the invention relates to a test head for breathing masks and diving masks in a shape approximating the human head, at least with one Test head inside traversing air line, the test head preferably has an opening in the area of the mouth to which the air line is connected with one end, while the other end with Air supply or measuring devices can be connected.
  • Such probes as known for example from DE-U 296 05 844 are used to ensure the tightness of respirators and dose-controlled breathing valves, the so-called lung regulators, to check.
  • lung regulators runs from the mouth area to the base of the test head the air line through which the masks and regulators are connected an artificial lung can be ventilated or via which one of one Blower generated airflow through the masks and regulators can be directed. Since the ventilation volume and air flow are one certain quantity, and since the test head itself if possible The cross-section of the air line must have little inherent resistance be sized accordingly.
  • the present invention is based on the object to provide a test head of the type mentioned at the beginning, which meets the two conflicting requirements outlined and on the one hand enables a large air flow rate, on the other hand it enables Measurement results are not significant due to an excessive volume of the air line impaired.
  • the air line has a locking element in the area of the test head for optional use pressure-tight sealing of the air line.
  • the closure element is designed to be reversibly expandable and closes the air line in the activated state and releases at least a substantial cross section of the air line in the deactivated state.
  • Such an expandable closure element takes up only relatively little space in the air line in the deactivated state and thus barely blocks the air line and, on the other hand, can expand in the activated state until the entire air line cross section is sealed.
  • This expandable closure element expediently consists of an inflatable balloon body, which can be actuated in particular pneumatically. Compressed air in particular is very well suited as an actuating medium in the present application, since no special supply lines - as would be the case with water, for example - are required for this.
  • the closure element is expediently arranged in the air line and acts on the inner wall of the air line when activated. This eliminates sealing problems and other expenses bypass.
  • the closure element is expediently deactivated Condition stored in a container arranged in the air line and extends out of the container when activated. So lets make sure that the impairment of the air flow when deactivated Closure element is not particularly large.
  • this can be done by Discharge of the pressurizing medium, in particular the compressed air, and / or by mechanical retraction into the storage container respectively.
  • the balloon body acting as a closure element thereon adapt, for example, to form this ring or as Double chamber balloon body consisting of two balloon bodies connected in parallel consists.
  • a test head 1 is shown, the one the human head has approximate shape and serves the tightness and the working behavior respiratory masks and regulators. These are arranged in the area of the mouth 2 of the test head and over an air line 3 supplied with air.
  • the air line extends between an opening 4 in the area of the mouth of the test head and (not shown) air supply or measuring devices through the test head through it.
  • the volume of the air line 3 is of a non-negligible size and would falsify measurement values from leak tests, since a possible leak rate would be calculated from a completely wrong initial volume and not from the volume of the respiratory mask or lung regulator .
  • a closure element 5 in the area of the air line, which consists of a reversibly expandable balloon body 6, which is kept in a container 7 in the deactivated state (see FIG. 1).
  • the balloon body 6 is acted upon by compressed air via an air line 8 and pressed out of the container, where it expands until it bears against the inner wall of the air line 3 and completely seals the cross section of the air line.
  • the result is a dead space volume, that is to say a volume of the air line between the opening 4 and the closure element 6, which is substantially reduced compared to the dead space volume of the mask and the air line without the closure element.
  • the dead space volume can also be adjusted accordingly by a suitable choice of the position of the closure element in the air line.
  • FIGS. 3 and 4 differs in that that a measuring line 19 is arranged in the air line, the use excludes a balloon body according to Figures 1 and 2; instead there is a closure element 15 with an annular balloon body 16 arranged in the air line 13, the balloon body 16 the Measuring line surrounds along its circumference and with an air line 18 Compressed air can be acted upon, whereupon the balloon body 16 contacts the inner wall the air line 13 creates in the activated state.
  • the closure element 15 is formed without a storage container, wherein the balloon body 16 on its annular inside pressure-tight on the Measuring line and on its ring-shaped outside on the likewise ring-shaped Air line 18 is set.
  • the present invention makes a more correct one Result in tightness measurements achieved without losing throughput by reducing the air line significantly.
  • the closure element according to the invention which is extremely simple which can be operated and which also enables an automated test sequence remains by the closure element solely by pneumatic action can be activated and deactivated by subsequent evacuation is.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Dental Preparations (AREA)
EP00122491A 2000-01-11 2000-10-14 Tête d'essai Withdrawn EP1116498A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20000379U DE20000379U1 (de) 2000-01-11 2000-01-11 Prüfkopf
DE20000379U 2000-01-11

Publications (2)

Publication Number Publication Date
EP1116498A2 true EP1116498A2 (fr) 2001-07-18
EP1116498A3 EP1116498A3 (fr) 2002-10-09

Family

ID=7935747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122491A Withdrawn EP1116498A3 (fr) 2000-01-11 2000-10-14 Tête d'essai

Country Status (3)

Country Link
US (1) US20010007255A1 (fr)
EP (1) EP1116498A3 (fr)
DE (1) DE20000379U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU206156U1 (ru) * 2020-10-07 2021-08-25 Владимир Дмитриевич Романов Универсальный мобильный блок подачи постоянного воздушного потока "Борей"

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7988452B2 (en) * 2008-05-23 2011-08-02 Dräger Safety AG & Co. KGaA Test head for protective mask testing and test head system
US8485185B2 (en) 2008-06-06 2013-07-16 Covidien Lp Systems and methods for ventilation in proportion to patient effort
US8196454B2 (en) * 2009-12-11 2012-06-12 Hamilton Associates, Inc. Portable multi-function system for testing protective devices
US8714154B2 (en) 2011-03-30 2014-05-06 Covidien Lp Systems and methods for automatic adjustment of ventilator settings
US10362967B2 (en) 2012-07-09 2019-07-30 Covidien Lp Systems and methods for missed breath detection and indication
WO2014152268A1 (fr) * 2013-03-14 2014-09-25 Scott Technologies, Inc. Tête factice ajustable
US9808591B2 (en) 2014-08-15 2017-11-07 Covidien Lp Methods and systems for breath delivery synchronization
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
CN112118884A (zh) 2018-05-14 2020-12-22 柯惠有限合伙公司 用于利用信号失真的呼吸努力检测的系统和方法
US11752287B2 (en) 2018-10-03 2023-09-12 Covidien Lp Systems and methods for automatic cycling or cycling detection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29605844U1 (de) 1996-04-01 1996-05-23 Stumpf Willi Dipl Ing Prüfkopf für Atemschutzmasken

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302545C (fr) *
DE1232474B (de) * 1965-02-16 1967-01-12 Medizintechnik Leipzig Veb Maskendichtpruefgeraet
US4796467A (en) * 1987-04-30 1989-01-10 Biosystems Inc. Testing device for respiratory protective devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29605844U1 (de) 1996-04-01 1996-05-23 Stumpf Willi Dipl Ing Prüfkopf für Atemschutzmasken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU206156U1 (ru) * 2020-10-07 2021-08-25 Владимир Дмитриевич Романов Универсальный мобильный блок подачи постоянного воздушного потока "Борей"

Also Published As

Publication number Publication date
DE20000379U1 (de) 2000-03-23
EP1116498A3 (fr) 2002-10-09
US20010007255A1 (en) 2001-07-12

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