DE102018206324A1 - Resuscitation aid on board a motor vehicle - Google Patents

Abstract

On board a motor vehicle (105), a safety belt (120) with a belt tensioner (130) is mounted. A controller (175) is adapted to drive the belt tensioner (130) to periodically contract the thorax (125) of a person (115) secured to the seat belt (110) with the seat belt (120)

Description

The present invention relates to a mechanical resuscitation aid. In particular, the invention relates to an automatic Reanmiationshilfe on board a motor vehicle.

If a person on board a motor vehicle suffers a medical emergency, a built-in emergency call system can be activated to call for professional help. The emergency call can be triggered automatically, for example after an impact of the motor vehicle on an obstacle or another motor vehicle, or manually, for example in an allergic reaction to an insect bite or an infarction of the person. Until the help arrives, person should be provided first.

For example, in the case of a respiratory arrest, a lung massage should be performed continuously until respiration resumes or a more extensive procedure such as intubation can be performed. Despite compulsory training of drivers in some countries as first-aiders, certain life-sustaining measures are often not optimal. Proposals have been made for mechanical devices that can perform a heart or lung massage on a patient.

DE 10 2010 020 988 A1 describes a cardiac massage device with a hydraulic piston-cylinder complex.

DE 20 2008 014 773 U1 shows an emergency treatment device comprising a defibrillation device and a cardiac massage device whose controls are matched.

Such devices can be cumbersome and costly and their operation often requires prior instruction. One object of the present invention is to provide an improved technique for assisting a first person on board a motor vehicle. The invention solves this problem by means of the subjects of the independent claims. Subclaims give preferred embodiments again.

On board a motor vehicle, a seat belt with a belt tensioner is attached. A control device is adapted to control the belt tensioner to periodically contract the thorax of a person secured to the seat belt with a seat belt.

It has been recognized that a person who has suffered a medical emergency on board the motor vehicle can be automatically provided with resources that are already installed on many modern motor vehicles. The person does not have to leave the vehicle for a treatment or go to a special position. The technique can also be applied when the person is alone in the vehicle. The belt tensioner may be alternately driven to exert a pulling force on the seatbelt to squeeze (contract) the thorax, and to reduce the tractive effort to allow the thorax to expand (expand).

It is assumed that the safety belt already runs over the thorax, in the case of a three-point belt usually obliquely from one shoulder to an opposing pelvic area of the person. Other embodiments of seat belts, such as a five-point harness or a seven-point harness, may be used in a similar manner. In this case, one or more sections of the safety belt, which run in the thorax region of the person, individually or jointly by means of one or more belt tensioners can be periodically tense and relieved.

The control device is preferably configured to control the belt tensioner in such a way that the person receives a heart massage, a lung massage or a heart-lung massage. A lung massage is usually done with about ten contractions per minute, while a cardiac massage has a frequency of about 100 - 120 contractions per minute. The different frequencies can be alternated periodically in combined cardiopulmonary massage in a predetermined pattern.

The processing device may be configured to control the belt tensioner in response to a person's vital sign. For this purpose, it can include an interface for receiving the vital sign. The vital sign usually gives an indication of a waking state, a breathing or a blood circulation of the person. The vital sign may, in particular, comprise a pulse, a blood pressure or a respiratory frequency and be scanned, for example, by means of a sports watch or another wearable which the person wears. A sampled value may be communicated via a wireless interface, such as Bluetooth. Other potential vital signs sensors include an interior camera that preferably scans a subject's pupil. The camera can be part of a security system or a fatigue expert. A data connection between the camera and the processing device can also be wired and in particular comprise a data bus of the motor vehicle, for example a CAN bus.

The control device may further comprise an interface for receiving a vehicle state of the motor vehicle, wherein the control device is adapted to control the belt tensioner in dependence of the vehicle state. In a variant, the vehicle state can be evaluated for determining a state of health of the person, in particular for determining whether or not a massage should be carried out, as described above. In another variant, it can be determined whether the vehicle condition prevents the massage. For example, a massage on a driver's seat of the motor vehicle can be deactivated as long as the motor vehicle is controlled by the person in the driver's seat. A massage on all seats may be disabled if the vehicle is on the side or roof after a collision of a predetermined magnitude has occurred or if water enters the interior.

The seat may be electrically adjustable, wherein the control device comprises an interface for connection to the seat and is adapted to bring the seat in a predetermined position. By the predetermined position, the breathing of the person can be facilitated. By avoiding kinked veins a circulation can be supported. For this purpose, in particular, an angle between the thorax and the thigh can be increased by a backrest of the seat is tilted backwards. An angle between the thigh and lower leg can be opened by moving the seat backwards.

The seat may be electrically adjustable, wherein the control device comprises an interface for connection to the seat and is adapted to stiffen a backrest of the seat. The seat may comprise, for example, a lumbar support or another, preferably located in the thorax area supporting element, which can be controlled to stiffen the backrest. A pneumatic cushion around the backrest can be inflated.

The motor vehicle may have an electrically controllable window, wherein the control device comprises an interface for connection to the window and is adapted to open the window. This can ensure that the person gets enough fresh air during the massage. The opening of the window can only take place under predetermined conditions, for example if a temperature difference between inside and outside does not exceed a predetermined value. Whether or how far the window is opened, may depend on a rainfall on the outside. Like all other measures described here, these can also be switched off or overridden by the person or another person.

The control device may be configured to issue an automatic emergency call. In particular, an automatic emergency call system of the motor vehicle can be used for this purpose. Optionally, the emergency call can be supplemented with information that indicates the massage or a person's vital signs for the massage.

A safety system includes a controller described herein and a pretensioner. In particular, the control device can be designed to be integrated with the belt tensioner in a separately manageable unit. The two elements can be coordinated with each other in a special way to provide the massage can. Optionally, the seat may also be included in the system, especially if it is an electrically controllable seat.

The belt tensioner preferably has an electric motor drive. In contrast to an example spring-loaded or pyrotechnic belt tensioner for the case of collision, the electric motor drive can be improved for repeated operation. In addition, the tensile force applied by him can be improved controllable. A path to be applied for the tensile force can be predetermined, for example on the basis of a known body weight of the person. In one embodiment, a plurality of belt tensioners are provided on the seat belt, one of which may be adapted to improve restraint in the event of an imminent collision of the motor vehicle and another to exert the traction required for the heart or lung massage.

• 1 ein beispielhaftes Sicherheitssystem an Bord eines Kraftfahrzeugs;
• 2 eine weitere Ausführungsform eines Sicherheitssystems; und
• 3 ein Verfahren zum Steuern eines Sicherheitssystems darstellt.

The invention will now be described in more detail with reference to the attached figures, in which:

• 1 an exemplary safety system on board a motor vehicle;
• 2 another embodiment of a security system; and
• 3 a method for controlling a security system represents.

1 shows an exemplary security system 100 on board a motor vehicle 105 , At a seat 110 on board the motor vehicle 105 is a person 115 by means of a safety belt 120 held. The safety belt 120 is here exemplified as a three-point belt running. It is preferred that at least a portion of the seat belt 120 over a thorax 125 the person 115 runs so that the thorax 125 between the seat belt 120 and the seat 110 lies. By means of a belt tensioner 130 can be a pulling force on the seat belt 120 be exercised. The belt tensioner 130 Can be anywhere on the seat belt 120 attack and, for example, designed as a deflector and the seat 110 or on a body of the motor vehicle 105 be attached.

It is preferred that an applied tensile force of the belt tensioner 130 exceeds a predetermined minimum force and can be maintained over a predetermined minimum distance. For the purpose described herein, the minimum force should be above approximately 200 N and the minimum distance above approximately 50 mm. Other values can be determined empirically. The belt tensioner is preferred 130 electric motor and includes an electric motor and a reduction gear. The tensile force can, for example, by means of a belt drum from the reduction gear to the seat belt 120 be exercised. Optionally, a sensor for determining the tensile force is provided. The sensor may include a dedicated force sensor or perform force determination based on current consumption of the electric motor. The belt tensioner 130 can be controlled depending on the specific tensile force to provide a desired tensile force.

A processing device 135 is preferred by means of a first interface 140 with the belt tensioner 130 connected. Optionally, there is a second interface 145 provided with the seat 110 may be connected, in particular if the seat 110 is adjustable. An optional third interface 150 can the processing device 135 with another system on board the motor vehicle 105 connect. A fourth interface 155 can connect with one at the person 115 attached scanning device 160 be provided. Although the interfaces 140 - 150 as a wired and the fourth interface 155 As a wireless interface, each of the interfaces 140 - 155 optionally be wired or wireless. In addition, any interfaces 140 - 155 be combined or integrated with each other.

The seat 110 can be electrically, pneumatically or hydraulically adjustable, for example in its position in the longitudinal direction, based on a direction of travel of the motor vehicle 105 , or in a tilt of a backrest 165 with respect to the motor vehicle 105 or with respect to a seat. Other adjustments, such as the seat height or inclination or in the form of a lateral curve support, are also possible. In the area of the backrest 165 can be an adjustable support element 170 be provided, for example, a lumbar support or more preferably a support at the level of the thorax 125 , The support element 170 can preferably be controlled to the backrest 165 in the area of the thorax 125 to stiffen to improve as an abutment for a through the seat belt 120 applied compression force on the thorax 125 to serve. The support element 170 can be dedicated to this purpose.

The scanning device 160 is preferred directly on the body of the person 115 worn, for example, on the wrist or in a bag close to the body of a clothing. The scanning device 160 can also be attached directly to the body, for example by means of a thorax band, glued to the skin or as a clip, for example, on a finger or the earlobe of the person 115 , The scanning device 160 may include a sensor for determining a vital function, such as a pulse sensor, a blood-oxygen sensor or a heartbeat sensor. In one embodiment, the scanner is 160 like a wristwatch on the person's wrist 115 appropriate. The scanning device 160 can with a cellphone of the person 115 communicate, which as an interface to the processing device 135 can serve.

The third interface 150 is preferred for connection to an information bus on board the motor vehicle 105 set up. So can information of another system aboard the motor vehicle 105 receive, for example, a driving state, a vehicle state or a raw or processed measured value of a sensor or a subsystem on board the motor vehicle 105 may include. For example, via the third interface 155 an emergency call system, an interior monitoring system, a attitude control system or a navigation system of the motor vehicle 105 be connected. A function of one of the subsystems may be via the third interface 155 be controllable, such as opening or closing an electrically adjustable window.

A control device 175 includes the processing device 135 and preferably at least one interface 140 - 155 , The processing device 135 is preferably designed as a programmable microcomputer or microcontroller. In particular, the processing device 135 be configured to perform a method described herein in whole or in part. The method may be in the form of a computer program product with program code means. The computer program product may be stored on a computer-readable medium. The security system 100 includes the control device 175 and preferably the belt tensioner 130 , The seat 110 , the scanning device 160 and / or any other element described herein may also be from the security system 100 includes his.

It is suggested that the control device 175 is set up to use the belt tensioner 130 if necessary periodically to control such that the thorax 125 the person 115 compressed and relieved, leaving the person 115 receive a heart massage, a lung massage or a heart-lung massage.

2 shows a further embodiment of a security system 100 in a front view. Not alone 1 components are also shown in 2 located. Hidden elements are shown with broken lines.

3 shows a method 300 for controlling a security system 100 , The procedure 300 in particular on a control device described herein 170 and more preferably in the context of a security system 100 be executed. In particular, the method can 300 as a computer program product on the processing device 135 expire.

In one step 305 can one or more vital signs of the person 115 be determined. This can signal the scanner 160 or another sensor on board the motor vehicle 105 be evaluated. In one step 310 , which can be executed in parallel or concurrent thereto, information from the motor vehicle 105 be received, which is either a vital function of the person 115 or a driving condition of the motor vehicle 105 may affect.

On the basis of the collected information can be in one step 315 It is determined whether there is an indication for chest compression. In other words, it can be determined whether a lung massage, a heart massage or a heart-lung massage on the person 115 to be carried out or not. If no massage should be done, then the procedure 300 return to the beginning and go through again.

Otherwise, in one step 320 A confirmation will be requested at the beginning of the massage. For example, an acoustic or optical indication of the planned massage can be issued. The confirmation may be from the person 115 or another person. If the consent is granted or remains a refusal longer than a predetermined time, for example, because the person 115 is unconscious, so can the procedure 300 proceed anyway.

In one step 325 an emergency call, for example to a rescue center, can be submitted. This can be an indication of the condition of the person 115 be attached. Optionally, in one step 330 the seat 110 be controlled, for example, the backrest 165 to stiffen and / or the seat 110 to bring in a predetermined position. In addition, for example, a window of the motor vehicle 105 be opened to provide sufficient fresh air.

In one step 325 becomes the belt tensioner 130 controlled, periodically a predetermined tensile force on the seat belt 120 exercise, so the thorax 125 the person 115 between the seat belt 120 and the backrest 165 of the seat 110 as possible compressed by a predetermined amount. In the case of a lung massage, air is supposed to be released from the lungs of the person 115 In the case of a heart massage, blood is expelled from a ventricle. Subsequently, the tensile force is again reduced by a predetermined amount to allow air to flow into the lungs or blood into the ventricle. Speed of contraction and actuation travel and tensile force of the belt tensioner may be for the particular application and / or a physiognomy of the person 115 be adjusted.

LIST OF REFERENCE NUMBERS

100

security system

105

motor vehicle

110

Seat

115

person

120

safety belt

125

Thorax (thorax)

130

pretensioners

135

processing device

140

first interface

145

second interface

150

third interface

155

fourth interface

160

scanning

165

backrest

170

support element

175

control device

300

method

305

Palpating vital signs

310

Communication with motor vehicle

315

Indication for thorax compression?

320

Obtain confirmation

325

Issue emergency call

330

Drive seat

335

Drive belt tensioner

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010020988 A1 [0004]
• DE 202008014773 U1 [0005]

Claims (10)

Control device (175) for a belt tensioner (130) for a safety belt (120) on board a motor vehicle (105), wherein the control device (175) is adapted to drive the belt tensioner (130) to the thorax (125) one with the Seat belt (120) on a seat (110) secured person (115) periodically to contract. Control device (175) after Claim 1 wherein the control device (175) is adapted to control the belt tensioner (130) such that the person (115) receives a heart-lung massage. Control device (175) after Claim 1 or 2 , further comprising an interface (150, 155) for receiving a vital sign of the person (115), wherein the control device (175) is adapted to control the belt tensioner (130) in response to the vital sign. Control device (175) according to one of the preceding claims, further comprising an interface (150) for receiving a vehicle state of the motor vehicle (105), wherein the control device (175) is adapted to control the belt tensioner (130) in dependence on the vehicle state. The control device (175) of any one of the preceding claims, wherein the seat (110) is electrically adjustable and the control device (175) includes an interface (145) for connection to the seat (110) and is adapted to seat the seat (110) to bring a predetermined position. A control device (175) according to any one of the preceding claims, wherein the seat (110) is electrically adjustable and the control device (175) comprises an interface (145) for connection to the seat (110) and is adapted to seat a back of the seat (110 ) to stiffen. A control device (175) according to any one of the preceding claims, wherein the motor vehicle (105) has an electrically controllable window and wherein the control device (175) comprises an interface (150) for connection to the window and is adapted to open the window. Control device (175) according to one of the preceding claims, wherein the control device (175) is set up to issue an automatic emergency call. A security system comprising a control device (175) according to any one of the preceding claims and the belt tensioner (130). Security system after Claim 9 wherein the belt tensioner (130) comprises an electric motor drive.

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