瑞典专利SE1000790A1 Medical sensor device

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专利摘要:
The invention relates to a medical sensor device (11) for a patient. The device comprises an electrode (12) for detecting an electrical voltage on a body surface of the patient, a holding element (10) with at least one transmitting means for transmitting or conducting signals or electric currents, and at least one detachable mechanical coupling means for soluble mechanical coupling of the electrode (12) to the holding element (10), and at least one detachable electrical coupling means for releasable electrical coupling of the electrode (12) to the holding element (10). The holding element (10) comprises at least one sensor (6, 7, 17) for detecting at least one medical parameter such as at least one mechanomyographic sensor (6, 7, 17) or at least one acceleration sensor (6) or at least one microphone (7). Fig. 1)
公开号:SE1000790A1
申请号:SE1000790
申请日:2010-07-26
公开日:2011-01-29
发明作者:Marcus Eger；Thomas Handzsuj；Hans-Ullrich Hansmann
申请人:Draeger Medical Ag；
IPC主号:

专利说明:

As electromyographic sensors, electrodes are generally used which have an abutment and adhesive surface for application to the surface of the skin and furthermore a chamber with a gel. The gel is electrically conductive and can thereby serve to register an electrical potential on the skin's surface. The electrode with abutment and adhesive surface as well as the chamber is then generally a disposable electrode which is replaced after each use on the patient. The electrode is then provided with a dome which is clamped to a holding element.
Between the electrode and the holding element there is a clamping connection, which in addition to the mechanical coupling also has an electrical coupling for transmitting the electrical potential. A cable for arranging the electric current is arranged on the holding element, which is registered with the gel on the patient's surface. The holder element is used ﬂ your times. Admittedly, such a medical sensor device has the advantage that only the component which rests directly on the body, namely the disposable electrode, is replaced and the holding element is used ﬂ several times, so that only the disposable electrode needs to be replaced or replaced. On the disadvantage, however, it can be mentioned that with such a medical sensor system, no mechanomyogram can be registered by means of a mechanomyographic sensor.
EP 1 900 323 A1 discloses a medical electrode for gluing to the skin surface of a test person with a carrier adhering to the skin and a holding element for at least one electrically conductive connector. The coupling piece is covered on the skin side with an electrically conductive gel, in particular a sponge. A gap between the holding element and the electrically conductive coupling piece which is present on the skin side is closed by means of a preferably annular sealing element.
DE 10 2007 021 960 A1 discloses an electrode for detecting electrical signals on a body surface with a carrier layer facing away from the body and an electrically conductive adhesive layer arranged on the carrier layer and facing the body. The carrier layer has a magnetizable coupling means for coupling the carrier layer with an electrode holder by means of magnetic force.
A medical sound sensor for detecting heart sounds and / or lung sounds is known from DE 10 2007 001 921 BS. A sensor housing with an opening is spanned by means of an elastic membrane. A piezoelectric oscillation element is used to convert mechanical oscillations of the membrane into electrical signals, which are arranged in a damping oil.
The task of the present invention therefore consists in providing a medical sensor device at which electromyographic and mechanomyographic parameters for a patient can be reliably registered.
This object is solved with a medical sensor device for a patient, comprising an electrode for detecting an electrical voltage on a body surface of a patient, a holding element with preferably at least one transmitting means for transmitting or conducting signals or electric currents, at least one mechanical coupling means for releasable mechanical coupling of the electrode to the holding element, at least one electrical coupling means for releasable electrical coupling of the electrode to the holding element, the holding element comprising at least one sensor for detecting at least one medical parameter of the patient.
In particular, the sensor (s) for detecting at least one medical parameter of the patient is integrated (e) in the holding element and / or fixedly connected / connected to the holding element and / or releasably or non-releasably connected / connected to the holding element.
In an advantageous manner, in addition to an electromyogram, additional parameters of the patient, in particular a mechanomyogram, can thus be registered in a medical sensor device with a holding element as a reusable component and an electrode as a disposable electrode.
In particular, the sensor (s) is a mechanomyographic sensor.
In a further embodiment, the sensor (s) is an acceleration sensor and / or a microphone.
In a complementary embodiment, the sensor (s) is a piezoelectric contact sensor. The piezoelectric contact sensor is generally an acceleration sensor. Due to the mass of the piezo element, the accelerations acting on a piezo element lead to a force registered by the piezo element. Preferably, the mechanical coupling member (s) is designed such that the friction number in forming a friction and / or engagement connection between the holding element and the electrode, in particular between a contact surface on the holding element and a contact surface on the electrode, amounts to at least 0 , 05 or 0.1, preferably at least 0.15 or 0.25 perpendicular to an abutment surface of the electrode, and / or the biasing force in a design such as the action connection amounts to at least 0.5 N or 1 N, preferably at least 2 N, 3 N or 10 N, on the contact surface. The mechanographic sensor (s) are / are arranged on the holder element. When breathing, the patient performs movements of the body surface, which propagate to the medical sensor device. In order for the parameters registered by the mechanomysographic sensors not to be falsified due to mechanical play between the holding element and the electrode, it is required that no mechanical play occurs resp. any relative movement between the holding element and the electrode. Therefore, the specified friction numbers and bias forces are required.
In a variant, the mechanical coupling member (s) is designed so that the adhesion friction between the holding element and the electrode, in particular between the contact surface of the holding element and the contact surface of the electrode perpendicular to an abutment surface of the electrode, amounts to at least 0.05 N, 0.1 N or 0. , 2 N, preferably at least 0.3 N, 0.5 N, 1 N, 2 N, 5 N or 10 N. Conveniently, by means of the mechanical coupling member (s), a particularly releasable clamp can be provided. and / or locking coupling and / or by means of the mechanical coupling member (s) a particularly releasable engaging connection and / or action connection can be provided.
In a further embodiment, the mechanical coupling member (s) comprises a dome which is arranged in a recess and preferably the dome is formed on the electrode and the recess on the holding element.
In particular, the mechanical coupling member (s) is prestressed by means of an elastic element, in particular a ﬁ spring or an O-ring.
The elastic element provides a bias at the mechanical coupling member, e.g. at a disc and / or a dome, so that there is thereby no substantial mechanical play at the mechanical loads between the holding element and the electrode which occur, so that even movements on the patient's body surface do not falsify the measurements from the sensor, in particular the mechanomyographic sensor (s).
The biasing of the coupling member (s) is provided by a tilting of the holding element relative to the disc or dome. This equalizes the mechanical degrees of freedom due to the relative movements between the holding element and the electrode, which in the case of an electrically conductive terminal or locking connection only do not affect the functionality of the electrical signal derivation, so that this also leads to a conductivity of mechanical and acoustic impulses. application of the present invention, of acceleration signals from a patient's skin surface through the coupling means to the mechanomyographic sensor arranged in the holding element (s). The preload produced by the tilting results in an effective connection between the holding element by means of the dome with the electrode. In addition to or as an alternative to the action connection, a friction and / or engagement connection can be achieved by dimensioning and tolerance field dimensioning of the dimensions of the holding element, preferably designed as a clamping or locking coupling, the dome arranged on the electrode when coupling the holding element to the dome. For the present application case on the human body and the prevailing disturbance factors and the magnitude of the input, an adequate and robust design of the connector with safe transmission of the mechanomyographic signals from the skin surface to the sensor has been determined in measurement tests. the effective connection, which amounts to 1 N to 20 N. For a friction and / or engagement connection, a friction number of at least 0.2 has been determined, without a supporting combination through a proportion of the effective connection in the coupling member. The friction rates are essentially determined by the elasticity of the constituent materials in the friction and / or engagement joint and the surface condition, ie. the roughness of the elements in the friction and / or engagement connection, ie. in particular the dome, the electrode and the holding element. In doing so, it must be taken into account that the surface condition of reusable elements must be such that the number of bacteria that remain after a cleaning by means of disinfection and / or autoclaving must correspond to the hygienic requirements in everyday clinical practice. Therefore, in a combination of disposable elements, in this case the electrode with reusable elements, in this case the holding element, it is necessary to select a corresponding material and a corresponding surface condition that takes into account the hygienic aspects. This means that for a friction and / or engagement connection, the holder element should be formed of elements with an elastic material with a rather smooth surface, whereas the electrode and the dome as disposable elements can be roughened and structured. In the case of a combination of an action connection and a friction and / or engagement connection for the coupling means, for the engagement a friction number of approximately 0.1 and for the action connection a bias produced by tipping, for example by means of a mechanical spring arranged in the holding element, is given values of approximately 10 N. combination offers the advantage that the user can easily and safely close and loosen the coupling again. Excessive friction numbers, greater than 0.3 and with closure of the coupling generated biases of greater than 10 N result in large 7 designs of the electrodes, so that the force application when closing the coupling on a large skin surface can be distributed and thus not be painful for patients. Large designs of the electrodes are not practical in everyday clinical practice; therefore, with the specified combination of intervention compound and effect compound, a solution is given that is suitable from a medical and metrological point of view and in the light of the handling possibilities.
In a further embodiment, the electrode comprises a chamber with gel and / or the abutment surface is designed as an adhesive surface.
In a complementary variant, the electrode is a disposable electrode and / or the holding element ﬂ is sufficiently useful. The electrode as an affordable disposable electrode is replaced after each use and cannot be reused. The holding element with transfer means, e.g. a cable, is used for a long time.
As a result, the holder element does not need to be replaced and only the cheap disposable electrodes need to be replaced after use resp. measurement.
In a further variant, the transmission means (s) for transmitting or conducting signals or electric currents is a cable and / or a signal processing and transmitter unit and preferably a receiver.
For the transmission of mechanical and acoustic impulses, in particular acceleration signals, within the variants of the medical sensor device according to the invention described within the scope of the present invention, it is required with respect to a reliable and reproducible transmission channel from the skin surface of a patient through the connector to the the mechanomyographer arranged in the hopper element, the sensor (s), that the signal-attenuating properties of the masses involved, the materials and the interfaces between the elements involved and the materials in the transmission channel are so adapted that the frequency components in the signal necessary for the evaluation do not is attenuated so strongly throughout the oscillation time constant of the whole arrangement that the signals from the mechanomyographer 8 sensor 8 no longer show any metrological validity in the mechanomyogram with respect to muscle activity. The marked frequencies in the mechanomyogram are in the range of a few Hertz up to 50 Hz. For a qualitatively good evaluability, a technical realization requires a limit frequency of 200 Hz for the low-pass series connection of the involved elements muscle, fat and human skin, on the electrode in a chamber arranged gel, electrode with dome mount and dome, holder element with mechanomyographic sensor and connection cable. In the case of an un attenuated oscillation, an effective resonant frequency Q according to the following formula is determined via the application of an oscillation body with a mass (Ein-Massen-Schwingers), whereby c constitutes the spring constant and m the mass of the elements arranged in the series connection.
Q: - m In the spring constant, the size, thickness and material properties of the material, essentially the modulus of elasticity, will have an effect.
Measurements and experiments have shown that the described series connection of the elements together has a mass of at least 20 g, which in conjunction with the material properties results in a low-pass gene frequency of approximately 400 Hz. Thus, with the medical sensor device according to the invention, a measurement with qualitatively good evaluability is obtained.
In the following, embodiments of the invention will be described in more detail with reference to the accompanying drawings. These show: Fig. 1 a longitudinal section of a medical sensor device; Fig. 2 is a longitudinal section of a medical sensor system; Fig. 2a is a principle view of signal recording, signal processing and data forwarding of a medical sensor system; Fig. 3 is a first view of a longitudinal section of the medical sensor device in a first embodiment; Fig. 3a is a second view of a longitudinal section of the medical sensor device in a first embodiment; Fig. 4 is a first view of a longitudinal section of the medical sensor device in a first embodiment; Fig. 4a is a second view of a longitudinal section of the medical sensor device in a first embodiment; Fig. 4b shows a third representation of a longitudinal section of the medical sensor device in a first exemplary embodiment; F ig. A longitudinal section of the medical sensor device in a third embodiment; Fig. 6 is a longitudinal section of the medical sensor device in a fourth embodiment; Fig. 7 is a longitudinal section of the medical sensor device in a fifth embodiment; Fig. 8 is a longitudinal section of the medical sensor device in a sixth embodiment; Fig. 9 is a longitudinal section of the medical sensor device in a seventh embodiment; Fig. 10 is a first signal-time diagram showing an ECG signal and a breathing signal; Fig. 11 is a second signal-time diagram with an representation of ECG signal, MMG signal and respiratory signal.
I ﬁ g. 1 shows a longitudinal section of a medical sensor device 1 1 for recording an electromyogram (sEMG) and a mechanomyogram (MMG). The medical sensor device 1 1 is used in particular for artificial respiration in patients to register the muscular efficiency and muscle fatigue of the respiratory muscles. The medical sensor device 11 has a holding element 10 and an electrode 12. The electrode 12 is detachably connected to the holding element 10 by means of a clamping and locking coupling 19, 20, not shown in detail.
The electrode 12 is a disposable electrode and is replaced after each use. On the electrode 12 there is a contact surface 39 such as a sticking surface 1 and a chamber 2 with a gel. By means of the abutment surface 39 and the adhesive surface 1, the electrode 12 is attached to the patient's skin surface by means of adhesive. For conduction of electric potentials or an electric current, the chamber 2 is provided with an electrically conductive gel. Furthermore, on the electrode 12 there is a dome 21 which engages in a recess 22 in the holding element 10. Between the holding element 10 and the electrode 12 there is furthermore an elastic O-ring 4, which leads to a clamping of the clamping and locking coupling 19, 20. The dome 2 1 is formed at a dome mount 3 on the electrode 12. The electrode 12 thus constitutes an electromyographic sensor. At the holding element 10 there is an acceleration sensor 6 and a microphone 7 arranged as sensors 16 for detecting a medical parameter, in particular as mechanomyographic sensors 17. The medical sensor device 11 can thus detect both an electromyogram (sEMG) by means of the electrode 12 and also a mechanomyogram (MMG) by means of the acceleration sensor 6 and the microphone 7.
A sensor system 23 shown in Fig. 2 comprises three medical sensor devices 1 1. The medical sensor device 11 shown on the right in Fig. 2 corresponds to the sensor device 11 shown in Fig. 1. The sensor device 1 shown on the left in Fig. 2 1 further comprises a signal processing and transmitter unit 9, preferably a receiver, for transmitting data and / or signals. The signal processing and transmitter / receiver unit 9 thus constitutes, in addition to the cable 8, a transmission means 13 for transmitting or conducting signals or electrical currents. By means of the cable 8 the three sensor devices 11 are connected to each other and by means of the signal processing and transmitter unit 9 the data registered by the three sensor devices 11 are transmitted to an evaluation unit (not shown). The sensor devices 11 according to ﬁ g. 2 also has a battery (not shown), suitably 11l designed for electrical supply of the acceleration sensor 9, the microphone 7 and the signal processing and transmitter / receiver unit 9. In a further sensor system 23 (not shown), the sensor devices 11 have no signal processing and transmitter unit 9 and the sensor devices 11 are connected by means of the cable 8 as transmission means for transmitting or conducting signals or currents 13 to the evaluation unit, so that both transmission of data and signals as well as the electrical supply can be carried out by means of the cable 8.
I ﬁ g. 2a shows a principle representation of the components of the signal processing and transmitter receiver unit 9. The signal processing and transmitter unit 9 consists of an amplifier 91, an element for analog-to-digital conversion 92, an element for coding 93, a unit for modulation 94 and an HF transmitter and reception stage 95. In this case, individual components, such as the A / D converter 92, the coding 93 and the modulation 94, can be combined in a practical design into a microcontroller component group designed as a computer unit.
Fig. 3 shows a longitudinal section of the medical sensor device 11 in a first embodiment. In this case, the acceleration sensor and the microphone 7 as well as the sticking surface 1 and abutment surface 39 and chamber 2 with gel. The representation in Fig. 3 mainly serves to describe the first embodiment of the mechanical coupling means 14 and the electrical coupling means 15 between the holding element 10 and the electrode 12.
At the dome attachment 3 on the electrode 12, the dome is formed. The dome 21 then engages in the recess 22. The holder element 10 has an annular groove 41 incorporated in which an elastic element 26 is formed concentrically such as a spring 25 and a disc 30. An end of the disc 30 is thereby pressed at a contact surface 18 on a contact surface 18 at the dome 21 resp. at the dome attachment 3. Thereby a coupling with action engages between the disc 3 and the dome 21 resp. the dome attachment 3. The dome attachment 3 is designed so that it is electrically conductive to the chamber 2 not shown with the gel, so that electric current can thereby be conducted through the dome attachment 3, the disc 30 and the spring 25 as well as the holding element 10 resp. the boundary walls of the ring track 41. Thus, these components constitute an electrical coupling means 15 for electrically coupling the electrode 12 with the holding element 10. In addition, the components also constitute a mechanical coupling means 14, since a mechanical coupling is provided between the holding element 10 and the electrode 12 due to the coupling with action between the contact surfaces 18 on the disc 30 and the dome attachment 3 resp. dome 21. Between the electrode 12 and the holding element 10 there is an annular gap 40, in which the O-ring 4 is present as an additional elastic element 26.
The O-ring 4 provides a clamping of the mechanical coupling member 14, so that there is also an action engagement and / or friction engagement connection between the holder element 10 and the electrode 12.
As a result, during movements of the electrode 12 due to movements at the patient's skin surface, no mechanical play occurs between the electrode 12 and the holding element 10, so that in an advantageous manner those recorded by the mechanomyographic sensors 17 such as acceleration sensor 6 and microphone 7 the parameters are not falsified due to any mechanical play between the electrode 12 and the holding element 10. Thus, in a direction 31 perpendicular to the abutment surface 39, no play occurs. In an advantageous manner, moreover, no mechanical play occurs in a direction 32 parallel to the abutment surface 39 in an analogous manner, since this mechanical coupling in the direction 32 also has substantially the same mechanical properties due to the tension and the coupling during action by the mechanical coupling means 14.
The electric potentials registered by the electrode 12 resp. the received electrical currents are passed on to an evaluation unit (not shown) by means of the cable 8 not shown in Fig. 3. The cable 8 and / or the signal processing and transmitter / receiver unit 9 thus constitute the transmission means 13 for transmission or line. of signals or electric currents (ﬁ g. 1, 2 and 7 to 9).
I ﬁ g. Thus, a longitudinal section of the medical sensor device 11 is shown in a first embodiment in a detail view. The reproduction in ﬁ g. Sa serves to describe the functional action of a first embodiment of the mechanical coupling means 14 and the electrical coupling means 15 between the holding element 10 and the electrode 12 with the dome 21 according to Fig. 3. Similar elements in ﬁ g. Sa is denoted by the same reference numerals as in ﬁ g. Sa. I ﬁ g.
Thus, only those elements are provided with reference numerals which are necessary to represent the functional effect of the first embodiment. Through a view from the left and right side in longitudinal section, the effect of the voltage in the coupling is shown graphically.
On the left side in ﬁ g. Sa shows in an annular gap 40 a tensioned O-ring 4 as an elastic element 26 (Fig. 3) and a spring 25 in the rest position as an additional elastic element 25 (ﬁ g. 3).
On the right side in Fig. 5a, an enlarged annular gap 50 is shown with the O-ring 4 in the relaxed state 51 as an elastic element 26 (Fig. 3) and the spring 25 in a strongly tensioned state 53 as an additional elastic element 26 (ﬁ g). 3). The tensioned spring 53 on the right side is more strongly tensioned than the spring 25 in the rest position. The mechanical and electrical coupling means 14, 15 are connected depending on the voltage at different vertical positions via in this ﬁ g. 3 particularly emphasized contact surfaces 54, 18 on the right and the left side with the dome 21. On the left side, depending on the design of the dome 21, the spring tension of the spring 25 is less than that corresponding to the spring 53 on the right side, in interaction with the prestressed O-ring 4 and the spring, the mechanical and electrical coupling means 14, 15 are pressed against the contact surface 18 of the dome 21. By a vertical pressure and by the interaction of the spring tension of the spring 53 and the relaxed O-ring 51, on the right-hand side 14 the mechanical and electrical coupling means 14, 15 against a contact surface 54 of the dome with a substantially horizontal pressure 57. With increasing vertical pressure 56 the degree of voltage changes and the O-ring 51 becomes more strongly prestressed, the mechanical and electrical the coupling means 14, 15 are pressed through the bias of the spring 53 with a substantially horizontal pressure 57 against the vertical center 21 of the dome, until again through the bias through the dome 21 and the mechanical The coupling means 14 creates an effective or engaging coupling between the holding element 10 and the electrode 12 in a force equilibrium. In order to be able to produce the voltage across the mechanical coupling means 14 on the arrangement of holding elements 10, dome 21 and electrode 12, it has in practice been found to be advantageous with a ratio between the diameter of the O-ring 51 of 1.6: 1 to 1.2: 1 in a relaxed state relative to the biased O-ring 4, which is provided by the O-rings 4, 51 by suitable material composition.
Due to this voltage and the action connection by means of the mechanical coupling means 14, no play occurs in the direction 31 perpendicular to the abutment surface 39 and in the direction 32 parallel to the abutment surface 39.
That i ﬁ g. 4 shows the second exemplary embodiment of the medical sensor device 11 corresponding mainly to the first exemplary embodiment according to ﬁ g. 3 and differs only in that instead of the O-ring 4 as an elastic element a dome spring 27 is used for the voltage. The dome spring 27 is arranged in a dome spring recess 24 in the holding element 10.
Fig. 4a shows the second embodiment of the medical sensor device 11 according to ñg. 4. Equal elements in ﬁ g. Fig. 4a is denoted by the same reference numerals as in Fig. 4. In Fig. 4a, only those elements are provided with reference numerals which are necessary to show the functional effects of the second embodiment. The dome spring 27 is shown in a relaxed state 55. The mechanical and electrical coupling means 14, 15 are connected to the dome 21 in vertically variable - i ﬁ g. 4 particularly emphasized positions - of 15 contact surfaces 18, 54. Depending on the design of the dome 2 1, the side springs 53 are shown in a more tense state. The vertical pressure 56 changes the type of voltage and the mechanical and electrical coupling means 14, 15 are pressed through the bias of the springs 53 with a substantially horizontal pressure 57 towards the vertical center of the dome 21, until it is again through the voltage through the dome 21 and the mechanical coupling means 14 an action and / or engagement connection occurs between the holding element 10 and the electrode 12 in power iron weight. Due to this voltage and action connection by means of the mechanical coupling means 14, no play occurs in the direction 31 perpendicular to the abutment surface 39 and in the direction 32 parallel to the abutment surface 39.
I ﬁ g. 4b shows the second embodiment of the medical sensor device according to ﬁ g. 4 and 4a with drawn dimensions, spring paths and spring forces in a halved longitudinal section. Similar elements in Fig. 4b are denoted by the same reference numerals as in ﬁ g. 4 and 4a. Only the elements from ﬁ g necessary for the display of the dimensions, the spring paths and the spring forces. 4 and 4a are shown and provided with reference numerals. The dome spring 27 is shown in a relaxed state 55. The dome 21 has a height dimension 60 of 3.6 mm, a lower diameter 61 at the dome attachment 3 which amounts to 3.0 mm and a maximum horizontal diameter 62 which amounts to 4.0 mm. The recess 22 in the holding element 10 has an inner diameter 63 of 5.0 mm. The lateral spring force 64 of the side spring 53 amounts to 25 N with a horizontal spring path 65 of 2.0 mm. The vertical spring force 66 of the dome spring 55 amounts to 10 N with a vertical spring path 67 of 2.0 mm.
The third embodiment of the medical sensor device 11 shown in Fig. 5 corresponds in an analogous manner to the first embodiment according to ﬁ g. 3, wherein instead of the O-ring 4 as elastic element 26 only a U-biasing element 28 is used for mechanical biasing of the holding element 10 with the electrode 12 through the mechanical coupling member 14. 16 The fourth embodiment according to ﬁ g. 6 corresponds in an analogous manner to the first embodiment according to ﬁ g. 3, where instead of the O-ring 4 as elastic element 26 only an elastic cushion 29 is used for tensioning the mechanical coupling member 14.
I ﬁ g. Fig. 7 shows a fifth embodiment of the medical sensor device 11. The mechanical and electrical coupling means 14, 15 between the holding element 10 and the electrode 12 then correspond to the first embodiment according to Fig. 3 and are not shown substantially in ﬁ g. 7. The electrode 12 lies with the abutment surface 39 against the skin 36 of a patient and is connected to the skin 36 via an adhesive connection by means of the adhesive surface 1. Under the skin 36 are fat 37 and muscles 38. At the holding element 10 of synthetic material is arranged above the recess 22 for the dome 21 a printed circuit board 33 (PCT). On the conductor plate 33 there is an acceleration sensor 6 arranged as a mechanical myographic sensor 17.
Above the conductor plate 33 is an elastic attenuation layer 34 and on the attenuation layer 34 is the microphone 37 with a diaphragm 35. The attenuation layer 34 serves to attenuate abrupt movements so as not to falsify the measurements via the microphone 7. The data or signals recorded by the electrode 12 as electromyographic sensor and acceleration sensor 6 and the microphone 7 as a mechanomyographic sensor 17 are further guided by means of the cable 8 as transmission means 13 for transmitting or conducting signals or electric currents to an evaluation unit.
The medical sensor device 11 shown in Fig. 8 in a sixth exemplary embodiment substantially corresponds to the medical sensor device 11 shown in Fig. 7. In the following, only the differences compared to that in ﬁ g are described. 7 showed the fifth embodiment. The microphone 7 is instead fixed above the attenuation layer 34 on the cable 8. As a result, the sensor device 11 according to ﬁ g. 8 no damping layer 34 on the holding element 10.
Above the acceleration sensor 6, the holder element 10 is closed with a cover plate 5. The seventh exemplary embodiment of the medical sensor device 11 shown in Fig. 9 substantially corresponds to that in Figs. 8 showed the sixth embodiment. In the following, only the differences with respect to the sixth embodiment according to Fig. 8 are mainly described. The microphone 7 is not fixed immediately to the cable 8 but by means of a separate cable; only for the microphone 7, it is electrically connected to the evaluation unit and applied or attached with adhesive to the patient's skin 36. The separate cable 8 is either immediately connected to the evaluation unit or opens into the cable 8 for transmitting data or signals from the pouring element 10.
The medical sensor device 11 preferably consists of synthetic material. In particular, the holder element in the area of the recess 22 and the electrode 12 outside the chamber 2 consists of synthetic material. The disc 30 preferably consists of electrically conductive metal.
Fig. 10 schematically shows a first signal-time diagram with a representation of an ECG signal 71 and a breathing signal 70 from a human being, for example a patient. It is a representation of the signal amplitude of the ECG signal 71 on the Y-axis in a first value range 76 from -1.5 mV to +2.5 mV.
Furthermore, a representation of a breathing signal 70 is shown in dimensionless and standardized form, a value of +1.0 corresponding to an inhalation and a value of -1.0 an exhalation. the breathing signal 70 shows switching times 75 between inhalation and exhalation. The time axis 78 shows a time interval with a respiration with inhalation and exhalation, whereby in this representation a number of seven ECG complexes is depicted in the time interval.
Fig. 11 schematically shows a second signal-time diagram with a representation of the EMG / MMG signal 72 and a breathing signal 70. The second signal-time diagram is extracted from the first signal-time diagram according to Fig. 10 by the signal amplitudes on the Y-axis are displayed scaled on the Y-axis in a value range 77 from -1.5 mV to +1.5 mV, and the signal portions from the ECG are suppressed 18 by filtering. The EMG / MMG signal 72 in the signal amplitude is typically smaller by a factor of ten to error than the ECG signal 71 (Fig. 10). The breathing signal 70 corresponds to the dimensionless and normalized breathing signal 70 in Fig. 10. The time interval on the time axis 78 corresponds to that in ﬁ g. 10 showed the time interval. At the switching times 75 between inhalation and exhalation, reproducible signal forms for the EMG / MMG signal 72 can be seen. The EMG / MMG signal 72 delivers evaluable and representative signal shares at the beginning of the inhalation and exhalation processes.
Overall, considerable advantages are connected to the medical sensor device 1 1. The sensor device 11 is divided into a disposable electrode 12 and a reusable holding element 10. As a result, after each use only the electrode 12 needs to be replaced and the holding element 10 can often be used for a long time. By arranging the mechanomyographic sensors 17 on the reusable holding element 10, this advantageous and cost-effective division of the sensor device 11 into the disposable electrode 12 and the reusable holding element can be maintained, while the costly and expensive mechanomographic sensors 17 are used on the reusable sensor element 17. 10. Due to the spatial resp. the geometric proximity between the electrode 12 and the mechanomyographic sensors 17, in particular the muscle efficiency and muscle fatigue can be registered with small errors between the mechanomyographic sensors 17 and the electrode 12 as electromyographic sensor.

权利要求:
Claims (11)
[1]
A medical sensor device (11) for a patient, comprising - an electrode (12) for detecting an electrical voltage on a body surface of the patient; a holding element (10) with at least one transmission means (13) for transmitting or conducting signals or electric currents; - at least one releasable mechanical coupling means (14) for releasably mechanical coupling of the electrode (12) to the holding element (10); - at least one detachable electrical coupling means (15) for releasably electrically coupling the electrode (12) to the holding element (10); characterized in that the holding element (10) comprises at least one sensor (6, 7, 17) for detecting at least one medical parameter such as at least one mechanonomic sensor (6, 7, 17) or at least one acceleration sensor (6) or at least a microphone (7).
[2]
Device according to claim 1, characterized in that the holding element (10) has at least one transmission means (13) for transmitting or conduction of signals or electric currents.
[3]
Device according to Claim 1 or 2, characterized in that the releasable coupling member (s) (14) has at least one elastic element (26) for producing a bias between the electrode (12) and the holding element (10).
[4]
Device according to one of the preceding claims, characterized in that the detachable coupling member (s) (14) is designed in such a way that the frictional care between the holding element (10) and the electrode (12), in particular between a contact surface (18) of the holding element (10) and a contact surface (18) of the electrode (12), perpendicular to an abutment surface (39) of the electrode (12) amounts to 0.05 or 1, preferably at least 0, 15 or 0.25, and / or the biasing force against the contact surface (18) amounts to at least 0.5 N or 1 N, preferably at least 2 N, 3 N or 5 N.
[5]
Device according to one of the preceding claims, characterized in that the releasable coupling member (s) (14) is designed in such a way that the adhesion friction between the holder element (10) and the electrode (12), in particular between the holder element (10) contact surface (18) and contact surface (18) of the electrode (12), perpendicular to the abutment surface (39) of the electrode (12), amounts to at least 0.05 N, 0.1 N or 0.2 N, preferably at least 0 , 3 N, 0.5 N, 1 N, 2 N, 5 N or 10 N.
[6]
Device according to one of the preceding claims, characterized in that by means of one detachable mechanical coupling means (14) a particularly detachable clamping or locking coupling (19, 20) and / or by means of at least one mechanical coupling means (14) can be produced. a particularly releasable friction, engagement and / or action compound is prepared.
[7]
Device according to one of the preceding claims, characterized in that the detachable coupling member (s) (14) comprises a dome (21) arranged on a recess (22) on the electrode (12) and the recess (22) is formed on the holding elementct (10).
[8]
Device according to one of the preceding claims, characterized in that the releasable coupling member (s) (14) is biased by means of an elastic element (26), in particular a spring (25) or an O-ring (4).
[9]
Device according to one of the preceding claims, characterized in that the electrode (12) comprises a chamber (2) with gel and / or in that the abutment surface (39) is designed as an adhesive surface (1). 21
[10]
Device according to one of the preceding claims, characterized in that the electrode (12) is a disposable electrode and / or that the pouring element (10) can be used ﬂ several times.
[11]
Device according to one of the preceding claims, characterized in that the transmission means (13) for transmitting or conducting signals or electric currents is a cable (8) and / or a signal processing and transmitter unit (9) and preferably a receiver .

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同族专利:

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DE102009035018A1|2011-02-03|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US3750094A|1972-03-09|1973-07-31|Zenco Engineering Corp|Electrical connector|

US4207904A|1977-01-28|1980-06-17|Greene Ronald W|Constant power density electrode adapted to be useful in bio-medical applications|

AT150275T|1991-12-27|1997-04-15|Gilles Ascher|ELECTRODE CONNECTORS, ESPECIALLY FOR ELECTROCARDIOGRAM ELECTRODES, AND ALSO ELECTRODES WITH SUCH A CONNECTOR|

US6324432B1|1999-11-01|2001-11-27|Compex Sa|Electrical neuromuscular stimulator for measuring muscle responses to electrical stimulation pulses|

US6912414B2|2002-01-29|2005-06-28|Southwest Research Institute|Electrode systems and methods for reducing motion artifact|

DE10225621B3|2002-06-07|2004-01-22|Nicolay Verwaltungs-Gmbh|Device for electrically connecting a connecting line to an electrode, in particular a medical skin electrode|

GB2394294A|2002-10-18|2004-04-21|Cambridge Neurotechnology Ltd|Cardiac sensor with accelerometer|

US7110804B2|2003-04-24|2006-09-19|Inovise Medical, Inc.|Combined electrical and audio anatomical signal sensor|

AT503913B1|2006-09-15|2008-02-15|Lang Leonh|MEDICAL ELECTRODE|

DE102007001921B3|2007-01-12|2008-08-28|Enverdis Gmbh|Medical sound sensor and diagnostic method for the diagnosis of heart and / or lung diseases|

JP2008253310A|2007-03-31|2008-10-23|Saga Univ|Electromyographic-mechanomyographic measurement sensor|

DE102007021960A1|2007-05-10|2008-11-20|E/L/T Energy-Lab Technologies Gmbh|Electrode for detecting electrical signals on body surface, has body opposite carrier layer and electrically conductive adhesive layer arranged on body opposite carrier layer|

DE102007062214C5|2007-12-21|2017-12-21|Drägerwerk AG & Co. KGaA|Method for automatically controlling a respiratory system and associated ventilator|FR2971137B1|2011-02-09|2014-07-11|Univ Nancy 1 Henri Poincare|MOTION SENSOR ASSOCIATED WITH A DIAGNOSTIC ELECTRODE FOR MEDICAL IMAGING APPLICATIONS.|

DE102011101580B4|2011-05-13|2015-03-12|Dräger Medical GmbH|Sensor device for the electromyographic derivation of muscle signals as well as methods for the preparation of an electromyographic derivation of muscle signals and system|

DE102012003509B4|2012-02-22|2020-06-10|Drägerwerk AG & Co. KGaA|Respiratory system|

AT514017B1|2013-02-22|2020-11-15|Dr Skrabal Falko|Hemodynamic EKG|

EP3025644A1|2014-11-27|2016-06-01|BIOTRONIK SE & Co. KG|Sensor arrangement for recording electric signals|

DE102019006866A1|2019-10-02|2021-04-08|Drägerwerk AG & Co. KGaA|Method and device for determining a respiratory or cardiogenic signal|

法律状态:
2014-05-27| NAV| Patent application has lapsed|

优先权:

申请号 | 申请日 | 专利标题

DE102009035018A|DE102009035018A1|2009-07-28|2009-07-28|Medical sensor device|

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