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WO2006101400A1 - Dispositif a placer sur la poitrine d'un patient, dans le but de cooperer avec les mains d'une personne effectuant des compressions de la cage thoracique - Google Patents

Dispositif a placer sur la poitrine d'un patient, dans le but de cooperer avec les mains d'une personne effectuant des compressions de la cage thoracique Download PDF

Info

Publication number
WO2006101400A1
WO2006101400A1 PCT/NO2006/000103 NO2006000103W WO2006101400A1 WO 2006101400 A1 WO2006101400 A1 WO 2006101400A1 NO 2006000103 W NO2006000103 W NO 2006000103W WO 2006101400 A1 WO2006101400 A1 WO 2006101400A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
chest
patient
prestressed
person
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.)
Ceased
Application number
PCT/NO2006/000103
Other languages
English (en)
Inventor
Børge LUND
Jan Vegard HESTNES
Mathias Molden
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.)
Laerdal Medical AS
Original Assignee
Laerdal Medical AS
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 Laerdal Medical AS filed Critical Laerdal Medical AS
Publication of WO2006101400A1 publication Critical patent/WO2006101400A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00—Artificial respiration by a force applied to the chest; Heart stimulation, e.g. heart massage
    • A61H31/004—Heart stimulation
    • A61H31/005—Heart stimulation with feedback for the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00—Artificial respiration by a force applied to the chest; Heart stimulation, e.g. heart massage
    • A61H31/004—Heart stimulation
    • A61H31/007—Manual driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0173—Means for preventing injuries
    • A61H2201/018—By limiting the applied torque or force
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A61H2201/5048—Audio interfaces, e.g. voice or music controlled

Definitions

  • the present invention relates to equipment for use at life-saving/heart and lung resuscitation (so called CPR), and in particular a device for placing on the chest of a patient to cooperate with the hands of a person who performs chest compressions.
  • the device is, in particular, arranged to emit a sound when the chest compression is performed with a force that exceeds a predetermined value. Even more specifically, the device is defined by the features that are given in the ingress of the subsequent claim 1.
  • Good chest compressions are defined (according to the Guidelines 2000 given above) as those that compress the chest of a grown person 4 cm with a frequency of 100 per minute. To force the chest of a grown person that far down requires a force of about 35 kp. For a child, the chest ought to be compressed about 2.3 cm, which requires a force of about 20 kp. Audio messages have been found to improve the compression and ventilation rhythm and are recommended to be used in CPR (Guidelines 2000).
  • CPR-Ezy is a rectangular device that is placed between the hands of the rescuer and the chest of the patient. It encompasses a LED screen that gives visual information about the force used. The device also incorporates an electronic metronome that gives out both sound and light.
  • CPR-Ezy and similar devices are too expensive (USD 150 to USD 250) and elaborate to be used to any large extent by unskilled persons.
  • ventilation aids are, to a large extent, used by unskilled persons; they normally cost around USD 2 to USD 15 and fit into a wallet or a pocket.
  • CPR-Ezy is dependent on an electrical power source, for example a battery.
  • a battery can be subjected to losing power even when not in use. An unskilled person can carry this around for many years before a situation arises where it can be necessary to use it. At this time the battery may be flat and the device will be useless. If there is still life in the battery, the rescuer must give all his visual attention to the LED screen to see if the compression is good enough.
  • US Patent 4,554,910 Another previously known device is shown in US Patent 4,554,910. This device has an underside which is intended to be placed on the patient's chest and an upper side which the rescuer presses against. A spring and a rectangular spring body in steel are between the surfaces. The steel spring body has sidewalls with inwardly directed recesses. When the steel spring body is forced together, the recesses will bend outwards and emit an audible click.
  • US 4,863,385 is a completely electronic device. It appears to look very advanced, as it comprises a synthetic voice, indicator lamps and buzzers. It can also be set for people of different sizes and it can detect a pulse. However, it does not comprise any detection of the force that is used for the chest compression. Therefore, apart from the pulse measurements, this known device is nothing but an instruction book. The aim is that the user shall turn on the device, and the device shall thereafter provide instructions to the user (in the form of a synthetic voice) about what he shall do, and also the order and timing of the actions.
  • the device has an outer manual switch that can be turned from off to one of four different on-positions.
  • the device has, according to this publication, no possibility to detect that the user is carrying out chest compression with sufficient force.
  • US 5,496,257 also shows a completely electronic device, which shows the force of the chest compression in a display 50. It is also mentioned that audible signals can be emitted if the force of compression is too large or too small.
  • this device there is also an external switch that can be operated from an off position to one of two on-positions.
  • Each of the on-positions is connected to a separate battery, so that the user shall have an extra power source if one of the batteries is flat.
  • the device is completely dependent on electrical power. If both batteries are flat, the device will be of no use.
  • US 6,013,041 shows a device that is meant for, and only applicable to, simulation of chest compressions. Therefore, it is formed as a long telescopic tube that gives a certain compression travel. This shall give an approximately, realistic movement during the training.
  • the device is not suitable for use on a patient. If one tries this, the device would take up much of the movement and the force from the operator. One would thereby not have any control over how much movement and force that is transferred to the patient, as little as if one put several cushions or mattresses between the hands of the operator and the patient. Furthermore, due to its length, the device would be very difficult to control, as it could easily flip sideways during the compression.
  • Laerdal Medical AS developed an aid to improve the timing and efficiency of chest compressions, both during training and at use on a patient, at a price and a size that makes it possible for all unskilled persons to buy it and carry it around at all times.
  • the device has a mechanical sound generator to provide a sound when the parts are moved against each other with a force that exceeds a predetermined value.
  • the mechanical sound generator comprises a plate suspended in one end, where the opposite end of the plate is free, and where the plate is formed such that it provides a sound when a force that exceeds a predetermined value is exerted against the free end of the plate.
  • the lifetime of the plate can be drastically increased in that the plate is prestressed when fitted in the chest compression device. The reason for this is possibly that the plate must then be subjected to considerably smaller movement before it is turned inside out and one hears a click. According to the invention this is achieved in that the plate is fixed and prestressed to a certain curvature that does not exceed the curvature at which the plate suddenly changes its bending stiffness.
  • the plate is preferably, at its one end, held fast in a fixture and, at its other end, led under one or more barbs that hold the plate in a curved state. This leads to a simple and sure fixing, and that the plate is easy to fit.
  • the plate is preferably, over a part of its length from the end edge that is fitted to the fixture, supported by at least one arched contact face. This leads to an even curvature of the plate so that the tension is distributed across the plate surface.
  • the plate is supported at about the middle of its longitudinal axis with the help of a middle support and is prestressed in that it is held at each end in a curved state with the help of prestressing holders. This implies that the plate can be larger and one thereby gets the tension more evenly distributed.
  • the prestressing holders preferably encompass barbs under which the plate is led. This ensures that the plate is simpler to fit and that it can move freely in the subsequent curvature.
  • Figure Ia shows a section in perspective of one half of a chest compression device in a first embodiment form of the invention with a fixture for fastening of a click metal plate
  • Figure Ib shows, corresponding to figure Ia, where a click metal plate that is not prestressed is inserted
  • Figure Ic shows, corresponding to figure Ib 5 but with a prestressed click metal plate
  • Figure 2 shows a section through the click metal plate and the holder for this in figure Ib and
  • Figure 3 shows a perspective diagram of the one half of a chest compression device in a second embodiment form of the invention.
  • Figure Ia shows in perspective a section of a lower half 1 of a chest compression device according to the invention.
  • a fixture 3 that is comprised of a gable 5 and side members 6 is integrated in the lower half.
  • prestressing holders 9 are arranged at some distance from the fixture 3.
  • a projection 8 protrudes from about the middle of the gable 5.
  • the projection 8 has a peg 12 at its outer end, which is arranged to be led into a hole (not shown) in a plate 2 (see figure Ib).
  • the side members 6 are fitted with curved contact faces 7.
  • the prestressing holders 9 stand in the extension of the side members 6, but at a distance from these.
  • the prestressing holders 9 comprise a trunk 11 that is fitted with barbs 10.
  • the distance between the prestressing holders is adapted to the width of the plate 2, so that the distance between the trunks 11 is somewhat larger than the width of the plate, while the distance between the barbs 10 is somewhat smaller than the width ofthe plate 2.
  • the click metal plate 2 with its one end is inserted into the fixture 3 at the gable 5.
  • the plate 2 lies in an arch over the curved contact faces 7 and stretches further in an arch to the underside of the barbs 10.
  • the curvature of the contact faces 7 and the placing of the barbs 10 are adjusted so that the plate arches evenly when in a prestressed state.
  • a pressure device (not shown) that can be a screw or a peg at the upper half of the chest compression device, will be forced against the plate 2 in an area at the outer free end of the plate.
  • the plate 2 will then be further curved and, at a certain pressure force, it will suddenly change bending stiffness and emit an audible clicking sound.
  • the plate 2 As the plate 2, according to the present invention, is already curved a part of the curvature it must go through before it clicks, the bending movement of the plate 2 will become relatively small. When the plate is strained several times at the pressure device, the total travel of the plate 2 will be considerably reduced. The heating up will thereby be reduced and the lifetime of the plate will increase. At the fixing, according to the embodiment form in the figures Ia, Ib, Ic and 2, it is ensured that the plate is bent as evenly as possible. Tension concentrations are thereby avoided and the lifetime is further increased.
  • FIG. 3 shows an alternative embodiment form of the invention.
  • a middle support 15 is arranged on the lower half 1.
  • the plate 2 is placed over the middle support 15 and is bent down underneath the barbs 10 on the prestressing holders 9.
  • a dome 16 is also drawn in the middle of the plate 2. This dome 16 goes down toward the support 15 when the plate is not bent above a certain curvature. Therefore, the support 15 has a protrusion 17 below the dome 16.
  • a pressure device 18 will force against the plate near each end of the plate at the barbs 10.
  • the plate will be strained at each end. This leads to a more even distribution of the curvature over the length of the plate than the embodiment form according to the figures Ia, Ib, Ic and 2.
  • the dome 16 will be changed from curving downwards to the support 15 to curving upwards from the support 15. At the moment this occurs, the plate will emit a click.
  • the embodiment form according to figure 3 offers a possibility for a plate that is even larger than the embodiment form according to the figures Ia, Ib, Ic and 2.
  • the tension in the plate is thereby distributed over an even larger surface.
  • the placing of the barbs is not critical and neither is the number. However, the placing and the number can be significant for how even the curvature will be on the plate and thereby will also be important for the distribution of the tensions.
  • the pressure mechanism represented by the pressure devices 18 in figure 3

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

La présente invention concerne un dispositif à placer sur la poitrine d'un patient, dans le but de coopérer avec les mains d'une personne qui est en train d'effectuer des compressions de la cage thoracique. Le dispositif comprend un générateur mécanique de son qui comprend une plaque (2) fixée et formée de sorte qu'elle émette un son lorsqu'une flexion vers le bas qui dépasse une certaine valeur est imposée à la plaque (2). La plaque (2) est fixée et précontrainte de manière qu'elle présente une certaine courbure qui ne dépasse pas la courbure selon laquelle la plaque change subitement de raideur en flexion. La durée de vie de la plaque est ainsi accrue de manière significative.
PCT/NO2006/000103 2005-03-22 2006-03-20 Dispositif a placer sur la poitrine d'un patient, dans le but de cooperer avec les mains d'une personne effectuant des compressions de la cage thoracique Ceased WO2006101400A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20051529 2005-03-22
NO20051529A NO322613B1 (no) 2005-03-22 2005-03-22 Anordning for plassering pa brystet til en pasient, for samvirke med hendene til en person som utforer brystkompresjoner

Publications (1)

Publication Number Publication Date
WO2006101400A1 true WO2006101400A1 (fr) 2006-09-28

Family

ID=35267121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2006/000103 Ceased WO2006101400A1 (fr) 2005-03-22 2006-03-20 Dispositif a placer sur la poitrine d'un patient, dans le but de cooperer avec les mains d'une personne effectuant des compressions de la cage thoracique

Country Status (3)

Country Link
NO (1) NO322613B1 (fr)
TW (1) TW200638922A (fr)
WO (1) WO2006101400A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012143000A1 (fr) * 2011-04-16 2012-10-26 MÖSSMER, Sebastian Procédé et dispositif de réanimation cadio-respiratoire contrôlée, en cas d'arrêt cardiaque
DE102013006469A1 (de) 2012-11-08 2014-05-08 Sebastian MÖSSMER Vorrichtung zur kontrollierten herz-lungen-reanimation bei herz-stillstand in einem integrierten defibrillator
DE102014014074A1 (de) 2014-12-05 2016-06-09 Inotech Kunststofftechnik Gmbh Mehrteilige Vorrichtung zur kontrollierten Herz-Lungen-Reanimation bei Herzstillstand
WO2021093981A1 (fr) 2019-11-14 2021-05-20 Inotech Kunststofftechnik Gmbh Dispositif en plusieurs parties

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI758917B (zh) * 2020-10-26 2022-03-21 林忠信 心肺復甦術施作輔助器
TWI760256B (zh) * 2020-10-26 2022-04-01 林忠信 心肺復甦術施作輔助器(2)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554910A (en) * 1983-02-28 1985-11-26 Health Education Publication Company, Inc. Cardio pulmonary resuscitation pressure indicator
US6062115A (en) * 1997-04-14 2000-05-16 Meritool Corporation Audible signal torque wrench
WO2004056303A1 (fr) * 2002-12-23 2004-07-08 Laerdal Medical As Dispositif a placer entre la poitrine du patient et les mains d'une personne effectuant une reanimation cardio-pulmonaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554910A (en) * 1983-02-28 1985-11-26 Health Education Publication Company, Inc. Cardio pulmonary resuscitation pressure indicator
US6062115A (en) * 1997-04-14 2000-05-16 Meritool Corporation Audible signal torque wrench
WO2004056303A1 (fr) * 2002-12-23 2004-07-08 Laerdal Medical As Dispositif a placer entre la poitrine du patient et les mains d'une personne effectuant une reanimation cardio-pulmonaire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012143000A1 (fr) * 2011-04-16 2012-10-26 MÖSSMER, Sebastian Procédé et dispositif de réanimation cadio-respiratoire contrôlée, en cas d'arrêt cardiaque
DE102013006469A1 (de) 2012-11-08 2014-05-08 Sebastian MÖSSMER Vorrichtung zur kontrollierten herz-lungen-reanimation bei herz-stillstand in einem integrierten defibrillator
WO2014071915A2 (fr) 2012-11-08 2014-05-15 Mössmer Sebastian Dispositif permettant une réanimation cardio-pulmonaire contrôlée en cas d'arrêt cardiaque
DE102014014074A1 (de) 2014-12-05 2016-06-09 Inotech Kunststofftechnik Gmbh Mehrteilige Vorrichtung zur kontrollierten Herz-Lungen-Reanimation bei Herzstillstand
DE102014014074B4 (de) 2014-12-05 2018-05-24 Inotech Kunststofftechnik Gmbh Mehrteilige Vorrichtung zur kontrollierten Herz-Lungen-Reanimation bei Herzstillstand
US10893999B2 (en) 2014-12-05 2021-01-19 Inotech Kunststofftechnik Gmbh Multi-part device for controlled cardiopulmonary resuscitation during cardiac arrest
WO2021093981A1 (fr) 2019-11-14 2021-05-20 Inotech Kunststofftechnik Gmbh Dispositif en plusieurs parties
DE102019130809B4 (de) 2019-11-14 2024-06-13 Inotech Kunststofftechnik Gmbh Mehrteilige Vorrichtung

Also Published As

Publication number Publication date
NO322613B1 (no) 2006-11-06
TW200638922A (en) 2006-11-16
NO20051529D0 (no) 2005-03-22

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