reference will now be made in detail to the preferred embodiments of the present invention , examples of which are illustrated in the accompanying drawings . referring to fig1 the first embodiment illustrates a housing 1 having two access openings for accessing two compartments 20 , 30 . two clear or opaque covers 10 , 12 cover the openings , respectively . handle 40 provides a means for carrying the unit to a victim or patient . this allows the user to have a free hand for other equipment , handling a patient or other important tasks . moreover , with multiple pieces of equipment housed in the same unit , the user needs to only look at the face of the unit to view the various displays for the different systems . thus , consolidating multiple medical devices into one unit provides easier handling and convenience for the user . a convenient variation is illustrated in fig2 . instead of having two covers , this embodiment has one cover 14 for covering the openings of compartments 20 , 30 . in this embodiment , only a single cover 14 is removed to access the various compartments of the housing 1 . this provides an advantage over the first embodiment since the user only needs to remove a single cover to access all the equipment . during an emergency , when time is of the essence , this provides an important advantage for the user of saving time . the rest of this variation is similar to the first embodiment and thus , the features are represented by the same reference numerals and a detailed description is omitted . fig3 illustrates another variant of the invention . a single cover 16 covers the entire front face of the housing 1 . thus , all the equipment pieces , including the displays and controls are covered with a preferably clear cover 16 . this variation provides an advantage over the first and second described in units in that the displays 80 , speaker 50 , and other various controls 60 are protected by the cover 16 . thus , during use the operator only needs to remove a single cover piece to access all components in the housing . after use , the single cover protects all the controls and displays , as well as the other equipment housed in the compartments from damage during storage or transport . as noted above , each compartment 20 , 30 holds one or more emergency medical devices . several component variations are possible . for instance , the housing may combine a small - sized emergency oxygen unit ( gas dispensing device ) with an oximeter , a pulse display and electrode lead . as another alternative , either or both of the emergency oxygen unit and oximetry system may be combined with an automatic external defibrillator ( aed ), corresponding controls and paddle electrodes . in either case , the system may include a voice prompt system , selection controls and a speaker . many other combinations are possible , as will be evident to those of skill in the art . fig1 shows housing 1 having a gas dispensing device 70 and an electrocardio defibrillation device 75 , the former comprising an oxygen cylinder with a mechanical or electromechanically controlled regulator , gauge , mask and hose in one compartment 20 . the oxygen dispensing device may be functional in two modes : manual mode , in which an on / off switch or lever simply controls on / off supply of oxygen , generally delivered at a fixed or variable low flow rate , or automatic mode , where the flow rate is variable and may be controlled either according to program control or via feedback from the oximetry unit . included within the variable flow rate mode may be a ventilation mode for non - breathing victims , wherein liter flow and pressure are subjected to time sequencing according to a cycle corresponding closely to requirements the victim needs to return to a normal breathing pattern . compartment 30 stores defibrillator shock paddle electrodes 121 and oximeter electrode 107 . several other component variations are also possible . the defibrillation device and associated controls are contained entirely within the housing 1 , and may be of a form known in the art , as represented by u . s . pat . nos . 5 , 797 , 969 , 5 , 792 , 190 , 5 , 749 , 902 , 5 , 700 , 281 , 5 , 716 , 380 , 5 , 605 , 150 , 5 , 549 , 659 , 5 , 529 , 063 , 5 , 243 , 975 , 5 , 785 , 043 , 5 , 782 , 878 , 5 , 749 , 913 and 5 , 662 , 690 , each of which is incorporated by reference herein . several of these known defibrillators include voice prompting ; the invention deviates from the known voice prompting scheme in that it also includes timely prompts for oximetry measurement and the administration of oxygen . the protocols for the coordination of oximetry , oxygen administration and defibrillation are known generally in the medical arts , and therefore will not be explained in detail here . housing 1 holds power source 90 ( battery ), and the known controls 110 , 103 and displays 116 , 118 for the defibrillator and oximeter . a speaker 50 is also housed in the housing 1 , to be used in conjunction with voice prompting tools and controls 113 . an example of the use of the invention will now be described , in order to better explain the functionality of the invention . at an accident scene , for example , it is determined that a victim is currently in cardiac arrest . upon enabling the unit of the invention , controls 113 may be activated to enable the voice prompt system , which will guide the user through the steps necessary to operate the oxygen delivery , oximetry and defibrillation systems . such voice prompt systems are known in the portable defibrillation arts , however , according to the invention the prior art system may be modified to include prompts for effecting oxygen administration and oximetry measurements . for example , in this example of a non - breathing victim in cardiac arrest , the voice prompt system may guide the user through the following protocols : if the defibrillation is successful , as determined by a pulse reading , the voice prompt system may subsequently guide the user through switching of the ventilator mode to a regulated constant volume oxygen delivery mode which is more suitable for a breathing patient , and / or make other variations in oxygen delivery via program control or in response to oximetry readings . naturally , many variations are possible as will be readily apparent to those of skill in the art . in its most simple form , the integrated emergency medical systems of the invention may be substantially without interdependent control . for example , an emergency oxygen device can be combined with a defibrillation system , without any electromechanical connection therebetween . in such a case , if voice prompting is added , the system may prompt only for defibrillation , or both defibrillation and oxygen delivery , for example . a more integrated and sophisticated system is illustrated in fig4 . in this system , a control processor controls operation of the various emergency medical units ( oxygen delivery , defibrillation and oximetry ), accepts feedback from each of these units , interfaces with and controls the voice prompt system , and drives the various displays 116 , 118 . when the operator selects aed or oximetry functions by operating inputs 103 110 , the processor controls defibrillator control 111 to generate an output waveform of a selected type in accordance with operator selection , and controls oximetry control section 102 in accordance with operator selection to perform various measurements and drives display 116 to display these measurements , e . g ., pulse rate and blood o 2 related measurements , to the operator in real time . similarly , processor 101 drives lcd screen 118 to display user instructions and prompts , respiratory monitoring and diagnosis , and cardio diagnosis and monitoring data . processor 101 also interfaces with voice prompt system 112 to cause the latter to deliver a selected sequence of voice prompts via speaker 114 according to predetermined protocols , operator input and the condition of the patient as measured by the system , including sensors 107 , in a manner generally similar to that known in the art . as noted previously , the oxygen delivery system 105 can be controlled either manually or by automatic control . in a manual mode , for example , the system 105 may deliver oxygen at a fixed liter flow and pressure , or at a plurality of flow rates . in automatic mode , the system 105 may , in response to a control signal from processor 101 ( or user input ), deliver a time sequenced flow rate and pressure to operate as a ventilator . in response to user input , a control signal from processor 101 or feedback from oximetry control 102 , the system 105 can be switched from ventilator mode to fixed flow rate mode , the latter being more suitable for patients capable of breathing on their own . other fixed or variable flow rates may be elected via control signals from processor 101 or feedback from oximetry control 102 . with the present invention , a single therapy unit can combine emergency cardiac defibrillation and pulmonary oxygen administration in one convenient casing . an electrocardio diagnosis / monitoring / defibrillation device can be combined with electropulmonary blood oximetry / oxygen administration , including automated patient cardiopulmonary oxygen assessment and voice prompted therapy and resuscitation . although described herein as an interactive combination of oxygen delivery , oximetry and defibrillation systems , it will be apparent that the invention could be comprised of a combination of any two of these systems , with associated modification of the control mechanisms and voice prompts , as will be evident to those of skill in the art .
this invention provides a medical diagnosis and therapy system particularly adapted for the combined uses of emergency cardiac defibrillation and pulmonary oxygen administration , including automated patient cardiopulmonary assessment and voice prompted therapy and resuscitation : electrocardio diagnosis / monitoring / defibrillation and electropulmonary blood oximetry / oxygen administration . the system has a case having access opening and clear cover to view the apparatus and contents , to dispel all doubt as to know how to open the case and to make it easy for a user to quickly find and use the various components .