• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method and a device for determining the change in a water accumulation in a body part, namely in the foot and / or lower leg (1), wherein three-dimensional images are created and evaluated by the body part with at least one image acquisition unit (3). According to the invention, it is provided that, based on the images depicting the body part, at least one output variable lying on the surface of the body part, namely a measuring point (27, 29) and / or a measuring line (33, 34, 35) or curve is selected and defined in that at least one parameter dependent on the volume of the body part and consequently as the water accumulation, namely the position and / or the distance (A) of the output variable, is compared with at least one reference variable selected from the recorded images, namely a reference point (37 ), a reference line (38) or curve and / or a reference plane (25) is determined, - that the determination of the characteristic is repeated after a predetermined period of time, in particular in the same procedure, and that a change of the characteristic as a measure of a Change in water retention in the body part is considered.
    公开号:AT513091A1
    申请号:T727/2012
    申请日:2012-06-28
    公开日:2014-01-15
    发明作者:
    申请人:Ait Austrian Inst Technology；Univ Graz Med；
    IPC主号:
    专利说明:

    The invention relates to a method according to the preamble of claim 1. Furthermore, the invention relates to a device according to the preamble of claim 10.
    According to the invention, the lower legs or feet of a person are measured, the geometry of the respective body part being measured with the aid of cameras, in order to detect early leg edema. Thus, for example, in a home monitoring application with heart failure patients can be detected early when problems with the cardiovascular system of a patient occur.
    Heart failure (heart failure) is a serious disease of the heart, in which the heart is hardly able to pump enough blood through the body as a result of pre-existing conditions. As a result of heart failure, fluid may accumulate in the person's legs (right heart failure) or in the lungs (left heart failure) (lung or leg edema). Such edema is a symptom that indicates serious physiological problems and generally increased therapy and requires control by the doctor. Early detection of such edema may help the physician to initiate the necessary therapy in time to prevent serious cardiac derailment. Edema can be detected in different ways. A somewhat specific but relatively sensitive approach is the regular control of patient body weight. The fluid accumulated in the legs or lungs causes an imbalance in the fluid balance of the patient: less fluid is excreted than excreted. This leads to an increase in weight of the patient. Typical values would be weight gains of about 2 kg within 2 days. However, the problem is that such weight fluctuations can also be triggered by numerous other causes, e.g. changed eating and drinking behavior.
    Another method for detecting edema is based on the fact that different tissues have different electrical properties, in particular impedances. By impedance measurement, e.g. the proportion of fatty tissue, muscle tissue, air (in the lungs) or water in the body can be estimated. In the case of edema, since the proportion of water in individual body regions increases (lung or legs), impedance detection can also be used to detect edema.
    Heart failure patients can also be cared for with the help of home monitoring systems. Among other things, attempts are made to apply the abovementioned methods for detecting edema not only once at the doctor, but regularly at the patient's home. The weight is measured once a day by the patients and these weight values are transmitted to a data center. Frequently, other parameters are also recorded, e.g. Blood pressure, heart rate (pulse), well-being, medication, etc. If edema forms in the legs or lungs of the patient, it is often associated with an increase in weight and / or a change in other parameters (blood pressure, heart rate, etc.). ). US Pat. No. 5,824,029 "Implantable medical system for performing transthoracic impedance measurements associated with cardiac function" describes a method for impedance measurement with implanted devices, wherein therein the application of the impedance measurement is in the monitoring of the electrodes of the implant. This method is extended in US Pat. No. 7,313,434 "Impedance monitoring for detecting pulmonary edema and thoracic congestion", US Pat. No. 5,876,353 and US Pat. No. 5,958,861 in that the impedance between the housing of an implanted cardiac pacemaker and its electrodes is measured in order to determine fluid accumulations within to close the lungs. Disadvantage of such methods is that on the one hand a device must be implanted, on the other hand, only edema in the lungs can be detected, but not in the legs - as they often occur in right-sided heart failure.
    The fluid accumulation in the legs changes the shape of the legs - they swell. This swelling of the legs can be detected by various measuring methods.
    Known in this context is the measurement of the leg with Maßbändem at different points of the foot. However, the measurement must be performed by trained personnel, is highly dependent on the type of measurement and is not suitable for use in home monitoring scenarios.
    An established measurement method for determining leg volume is the water displacement method, which measures how much water is displaced from a vessel as the patient steps into the vessel with his leg. The volume of the displaced water corresponds exactly to the volume of the leg. Rabe E. et al. describe in Rabe E, Stücker M, Ottillinger B. Water displacement leg volumetry in clinical studies - A discussion of error sources. In BMC Medical Research Methology 2012, 10: 5 possible sources of error in this measurement method. Regardless of the sources of error described therein, this method is also poorly suited for use in home monitoring applications.
    Optical 3D scanners or 3D image acquisition units are devices that can record three-dimensional images of objects with the aid of stereoscopic images. Such devices are used in medicine for numerous tasks and can also be used advantageously in the context of the present invention.
    Ml * t * Μ Μ «I ·
    • * * I I J I • · »* ** | · T · · · t · · · · t * · · *
    Elbischger st ai. describe in Elbischger P, Jerolitsch-Binder J, Prasser M, Menard C. A novel measuring system for the accurate and efficient determination of extremity volume. In: Proceedings of the eHealth2011, 26.-27.5.2011 in Vienna, p129-134 a procedure in which the volume of this limb can be determined by taking a limb of a patient with the aid of a stereo camera.
    Kau CH, Cronin A, Duming P, Zhurov Ai, Sandham A, Richmond $. A new method for the 3D measurement of postoperative swelling. Orthod Craniofac Res. 2006 Feb; 9 (1): 31-7. describes the use of 3D laser scanners to monitor swelling after surgery.
    Rana M, Gellrich NC, Joos U, Piffkö J, Kater W. 3D Evaluation of postoperative swelling using two different cooing methods. Felting orthognathic surgery: a randomized observer blind prospective pilot study, int J Oral Maxillofac Surg. 2011 Jul; 40 (7): 690-6. Epub 2011 Mar 15 uses optical methods to compare different therapies for reducing swelling.
    Under the trade name Kinect, a 3D camera (RGB-D camera) is distributed, which was actually developed as a controller for a game console. Due to its spatial resolution of 640 x 480 pixels and a depth resolution of 11-bit, the accuracy of the field of view is approx. 1 mm. Body carts with integrated impedance measurement are used today to determine body fat percentage. Usually the impedance of the tissue between left and right foot is measured.
    With the currently available sensors and evaluation methods, although in many cases an edema formation can be detected, but the recognition is not yet sufficiently accurate, it is often only at a time when the formation of edema is already very advanced and is usually not for use suitable for home monitoring scenarios.
    The primary object of the invention is to determine the change in water accumulation in certain parts of the body, namely the foot and / or lower leg. This provision should be quick, easy and accurate and should be able to be performed without the use of trained personnel. Another specific object of the invention is to be able to detect leg edema early and with high accuracy or to detect heart failure.
    These objects are achieved in a method of the type mentioned above with the features mentioned in the characterizing part of claim 1. A device of the type mentioned is characterized according to the invention with the features specified in the characterizing part of claim 10. According to the invention, geometrical values are geometr II · · «« * • • * «« «4 II II · · · · · · · · · · · · · · · · · · · · · · · · · II · · · · · · · · · · · · · · · · · · ·. · Μ Μ ß * »Μ · Μ
    Characteristics specified on the foot or leg and determined and observed the change over time of these parameters. In the case of changes in the characteristic, these can be recorded and evaluated in a corresponding manner.
    Above all, variables are used as parameters, which are primarily influenced by the accumulation of water in the respective body part. The selected output quantities or measuring points and measuring lines should be as strong as possible and the selected reference quantities or reference points, reference lines and reference planes should be influenced as little as possible by water accumulation or be fixed points.
    The repetition of the measurement to determine how the parameters have changed can be done regularly or irregularly at predetermined times. As a rule, relative changes in the accumulation of water are found. If a calibration is carried out with reference to a given or volume-determined water accumulation as initial measurement, a quantitative statement can also be made about accumulated quantities of water.
    It is advantageous if the output variable is determined by selecting a point or line lying in the instep area of the foot or a line or curve lying in the instep area of the foot as measuring point or measuring line and / or by measuring one from the ankle and / or the on the inside of the lower leg extending line or curve is selected and / or - by as a measuring line, possibly approximated by a circular line, peripheral line of the lower leg on a height range of about 60% to 70% of the lower leg, calculated from the Sole of the foot or the supporting plane of the foot.
    Measuring points or measuring lines, which lie in the instep area, give a good statement, since the instep area increases or swells predestined with water accumulation in the legs. Also, the inside of the lower leg in the area from the ankle up to the lower end of the calf is subject to a characteristic change, as long as water accumulates in the leg.
    Furthermore, the upper calf portion is predestined by water accumulation in the leg affected. Here, the circumference of the lower leg in the calf area can be measured on the given height range. Changes in the parameter, which serves as the output variable and is used as a reference for further measurements, i. Changes in the magnitude of the output, i. against a detected measuring line enclosing the lower leg, give a statement about water retention in the leg.
    It is advantageous if the reference point used is the base point of the foot sole or the footing plane of a vertical line running through the measuring point lying on the surface of the instep to the sole of the foot or to the supporting plane, and / or a reference line is determined by a the straight line lying on the inside of the lower leg is drawn between the outermost ankle elevation and the lower end region of the calf or between the endpoints of a fixed measurement line or curve running on the inner side of the lower leg from the outermost ankle elevation to the lower end point of the calf and / or determining a reference plane by determining a plane containing the heel surface and the toe or ball surfaces of the foot, or by using the foot rearing plane as the reference plane, and / or determining a reference line by specifying, optionally by a circular line Approximately, the circumference of the lower leg on a height range of about 60 to 70% of the lower leg, calculated from the sole of the foot or the foot level of the foot determined.
    The reference point for a measurement point or a measurement line on the instep is either a point on the footprint of the foot or a point on the sole of the foot. Such points are advantageously determined by forming a vertical line through the respective measuring point or by projecting the measuring line onto the sole of the foot or onto the foot point.
    As a reference line for the lying on the inside of the leg measurement line can advantageously be used a straight line connecting the end points of the measurement line. The distance between the two lines, in particular the maximum distance and / or the area enclosed by the two lines, gives a statement about the accumulation of water.
    In the measurement of the lower leg, the output variables and the reference variables are advantageously determined in chronological succession in the same way.
    It is advantageous if the height of the measuring point in the instep area above its foot point on the sole of the foot or above its base on the supporting level is determined and used and / or the maximum distance or the area between the measuring line through the measuring points between the area the outermost elevation of the inner ankle and the lower end of the calf on the inner side of the lower leg, and one of these two... # m · * · »*» * # ···· φ t · · < · # «·« ·· ♦ ··
    Areas or the outermost measuring points connecting lines is determined and used and / or - the circumferential, area or radius difference of two, possibly approximated by a circle line, the circumference of the leg is used, which were taken at successive points in time peripheral lines.
    In the latter case, for example, the peripheral line ascertained in the case of a subsequent measurement of time can be used as a measuring line, and the difference from an already established circumferential line in the circumference or in the radius or in the enclosed area can be used for the characteristic. It could also be the average distance of the circumference related to the foot axis used to determine the characteristic. It is advantageous, however, if the first defined circumferential line around the calf area is used as the reference line and the position or the distance of a peripheral line obtained in the following measurements is used as a measuring line to this reference line for evaluation.
    In practice, it is advantageously possible to proceed in such a way that a point cloud is created for the three-dimensional image of the surface of the recorded body part obtained with the three-dimensional image recording method or the surface is simulated with a point cloud and the output variable and reference variable are formed based on the points of this point cloud. Such a formation of a point cloud with the 3D cameras used according to the invention is not a problem for the expert in the field of image analysis and is achieved by conventional means. The selection of the measuring points and measuring lines or of the reference points, reference lines and reference planes from this point cloud can be done either by manual input or selection or with appropriate programs, the point cloud from the desired points due to certain predetermined or existing characteristics for these points can determine. As fixed points for such investigations, for example, the ankle lift, the end points of the toes, the heel, the heel and ball surfaces or the contours of the sole or of the foot and the lower leg can be used. It is advantageous if the measurement point is selected from a subset of the point cloud, the subset comprising the points located in the instep area of the foot and the foot points located on the sole of the foot or foot contact area from the perpendicular through the measurement point And / or - the measurement line or curve is formed with points of the point cloud lying on the inside of the leg in the area between the elevation of the fifth knuckle and the area of the lower end of the calf, and / or - the is formed from a circumferential line around the lower leg with points of the point cloud, which lie in a peripheral region of the lower leg, wherein the peripheral region is in a range of 60 to 75% of the height of the lower leg, as measured from the support surface of the foot or the sole of the foot ,
    In order to improve the informative value of the dimensions obtained, it can be provided that, in particular, approximately simultaneously, with the determination of the core size, the weight of the person to be measured is determined and evaluated together with at least one parameter. Furthermore, it is also possible that characteristics determined in the individual determination processes are compared with one another and / or with predetermined threshold values. Even so, the significance of the measurements made can be increased.
    A further improvement can be achieved in that the color information of the image of the body part, in particular the mutual ratio of red, blue and yellow light, determined and evaluated together with at least one parameter and / or determined by image recording in the infrared range temperature information of the body part and be evaluated together with at least one characteristic. In leg edema due to cardiac problems it can be assumed that the skin is purple to reddish discolored. On the other hand, red discoloration indicates inflammatory processes. If the color is brown, venous insufficiency may be the cause of any volume changes.
    If the image recording in addition to visible also uses infrared light, from the image data on the temperature of the leg can be closed. This can also distinguish between edema of cardiac cause and, for example: inflammatory processes (which are associated with an increase in temperature in the affected areas).
    The sensor can also be improved by having the device on the base on which the person is located during the measurement, at least one temperature sensor and / or at least one pressure sensor and the values of the distance and / or position determination unit obtained from these sensors for evaluation and / or storage are supplied. By measuring further parameters in the test person's standing area, ie on the soles of the feet, the accuracy of the change detection can be improved. Thus, with the help of an array of pressure sensors, the support surface can be recognized, which increases in the case of edema due to the swelling. By temperature measurement, e.g. the distinction of inflammatory processes can be improved.
    It is advantageous that the method is used to determine the occurrence and / or the change and / or the assessment of the change in edema in the foot and / or lower leg and / or of cardiac insufficiency.
    A device of the type mentioned in the introduction is characterized in that a point cloud generator is connected to the image recording unit and uses the image recorded by the body part to create a point cloud covering or representing the points of the surface of the body part and to generate output variables and reference variables based on the points cloud points , and - that at the point cloud generator and / or the image pickup unit, a distance and / or attitude determining unit for determining the position and / or the distance of an output variable, namely a measurement point and / or a measurement line or curve of a reference variable, namely a reference point and / or a reference line or curve and / or a reference plane possesses, wherein the determination of the distance and / or the position is carried out with mathematical or statistical algorithms and a change of the distance and / or the position as a parameter and measure of water accumulation in K the body part and / or is available for the dependent of the accumulation of water volume of the body part for output and / or storage in a memory.
    Such a device is simple in construction and easy to operate or can be realized by the person skilled in the art with methods, programs and components known in the field of image processing. For operation, it is advantageous if the device comprises a comparator for detecting and / or displaying changes in the characteristics recorded in successive determination operations or in measurements taken in temporal succession.
    The efficiency of the device is increased when the device is connected to a balance or integrated into a balance or placed on a balance, so that it is easy for a user to determine and evaluate both the measures regarding the change of water accumulation and its weight can. Thus, the person using the scale can be informed simultaneously about the change in the accumulation of water and its weight. The device according to the invention can be integrated into a balance or combined with it to form a structural unit, wherein the weight measured values as well as the characteristic quantities can be stored and / or displayed. It is expedient if the device according to the invention already has a memory for the initial values and / or the dimensions and / or the person to be measured by the * * * * *
    has received reference sizes in order to avoid a re-measurement for subsequent measurements can.
    It can be provided that the device according to the invention has a storage unit for the recorded images. Any desired 3D cameras or optical sensors which are sensitive to at least one color spectrum may be used as image recording units. These cameras or sensors are arranged separately from one another in a corresponding spatial arrangement in order to be able to record three-dimensional images.
    In principle, it is also possible for a projection unit to be provided which projects an image, in particular a grid, onto the leg to be measured in order to be able to make better the detection and definition of the output variables and reference variables.
    The cameras can be arranged in different locations and record the leg from different perspectives; Such images can also be done by means arranged in spatially different positions mirror with a camera. The captured images are then assembled into a 3D image.
    It is also possible to connect the device according to the invention with a balance in such a way that the image recording is triggered by the weight measurement and is then carried out when it has been recognized by the balance that the body is no longer moving.
    It is also possible for the output variables or reference variables to be determined on the body part of the person to be examined, for example by marking with markers which adhere to the body surface and remain recognizable. Advantageously, such markings can also be applied to the device or the footprint area for the foot, wherein such markings can be easily recognized by the image processing units used. In the following the invention will be explained in more detail with reference to the drawing, for example.
    Fig. 1 shows schematically a lower leg or foot and a schematically illustrated device according to the invention.
    FIG. 2 shows a possibility for determining output and reference variables or the geometric parameters. FIG. 3 shows a further possibility for determining output and reference variables.
    Fig. 1 shows a possible embodiment of the invention. Shown are a lower leg 1 and a foot of a person. The height A of the middle foot or instep is measured with a device according to the invention, which comprises an image recording unit 3 or sensor unit, and as a measure of a water accumulation on a
    Memory unit 4 transmitted in which this parameter is stored. A number of measurements are taken at intervals and in a comparison unit 5 the measured values can be compared with each other. Based on the comparison, it is concluded that there is a change in the accumulation of water in the leg, and it can be decided, as shown in FIG. 8, whether the person's leg has or does not have edema, or whether heart failure is present.
    FIGS. 2 and 3 show possibilities for determining the geometric parameters. Reference quantities are searched for and e.g. marked reference points 22, 23, 24, 29, 30, 32, 35 are defined on the foot and / or lower leg, which are a reference size, e.g. form a riot level or reference plane 25. The distinctive points may be specifically color-coded or tattooed, or they may be defined as uniquely identifiable locations on the foot when the images are taken, such as the tip 24 of a toe, the innermost point 23 between two toes, a distinctive point of a toenail, the outermost point 29 of the inner ankle elevation 32, the inferior lowest point 22 of the heel area, etc. Another prominent point 27 can be searched at the metatarsus; the normal distance A of this point 27 to the reference plane 25 is used as a parameter.
    Reference quantities or output variables can also be derived from striking reference variables or output variables. For example, the intersection between the shortest connections between two distinctive points can be determined. The point 27 at the metatarsus could e.g. as the point of intersection between the connection of the foremost point 24 of the innermost (largest) toe with the outermost point of the lateral malleolus with the connection between the foremost point of the outermost toe and the innermost point 29 of the medial malleolus 32.
    According to FIG. 3, three marked points 33, 34, 35 are drawn on a lower leg 31, seen from the rear, above the inner ankle 32. These points and any other points lying therebetween on the surface of the skin are determined or predefined and the curvature of the measuring line or curve defined by these points is determined and used as a parameter. Alternatively, a triangle can also be placed through the three points and the height of this triangle can be determined as a parameter, i. the normal distance of point 34 from the line 38 passing through points 33 and 35. " * · «4 *« ·· * «· I ♦ · * * · ♦♦ ··· ··· * ♦
    In Fig. 2, the measurement of the circumference of the lower leg is shown in a predetermined height H above the plateau or reference plane 25 of the leg. At the predetermined height H, a circumferential line 36 is clamped or measured and the change in the circumferential line with respect to the radius and / or diameter and / or relative position to the foot axis with measurements taken in temporal succession is used as the parameter.
    The outlines of the leg illustrated in FIGS. 1 to 3 could already represent abstract views of the captured 3D images, namely point clouds or sections through point clouds extracted from the recorded three-dimensional images. In these images, the corresponding points 2, 37, 27, 22, 23, 24, 29, 32, 33, 34, 35 could then be marked and used for the respective successive measurements. A storage of these points can be done in the memory unit 4. The recording and the storage of the reference points or reference lines or reference planes are advantageous for successive measurements in order to always be able to create the same starting position for successive measurements and to be able to detect the position or the distance or a change of these parameters relative to this starting position. The reference points or reference lines or reference planes can lie on the leg, but also on the measuring device itself or in the surroundings thereof, in particular on the stand surface. For the diagnosis of edema, it may be provided that both a change in body weight in the direction of a higher value, as well as a change in the accumulation of water in the direction of a higher value, must be determined together in order to justify the diagnosis of edema , It is also possible to specify threshold values for the increase in weight or the increase in the accumulation of water in the body part, which must be exceeded in order to allow inferences about edema.
    The measurement and reference lines can have any predefined course and be formed by straight lines or curves.
    It is quite possible to define or use several output variables and / or reference variables in the course of a measurement and to determine several parameters based on these variables.
    The bases of individual points are determined by the intersection of a perpendicular to the reference plane with this plane, which runs vertically through the point.
    权利要求:
    Claims (15)
    [1]
    1. A method for determining the change in a water accumulation in a body part, namely in the foot and / or lower leg (1), wherein three-dimensional images are created and evaluated by the body part with at least one image recording unit (3), characterized in that - on the illustrations representing the body part, at least one output variable lying on the surface of the body part, namely a measuring point (27, 29) and / or a measuring line (33, 34, 35) or curve are selected and defined, - that at least one of the volume of the body part and consequently as a parameter dependent on the accumulation of water, namely the position and / or the distance (A) of the output variable relative to at least one reference variable selected from the recorded images, namely a reference point (37), a reference line (38). or -kurve and / or a reference plane (25) is determined, - that di e determination of the parameter after a predetermined period of time, in particular in the same procedure, is repeated and - that a change in the characteristic is considered as a measure of a change in the accumulation of water in the body part.
    [2]
    2. The method according to claim 1, characterized in that the output quantity is determined by selecting a point or line lying in the instep area of the foot as the measuring point or measuring line or a line or curve lying in the instep area of the foot and / or by A line or curve extending from the ankle and / or the outermost ankle elevation (32) to the lower calf end on the inner side of the lower leg is selected and / or - by using as a measuring line a circumferential line (36) of the lower leg approximated by a circular line Height range (H) of about 60% to 70% of the lower leg, calculated from the sole of the foot or the supporting plane (25) of the foot, is selected.
    [3]
    3. The method according to claim 1 or 2, characterized in that as a reference point (37) of the on the sole of the foot or the support plane (25) lying base of a lying on the surface of the instep measuring point (27) extending perpendicular (28) Sole of the foot or to the riot plane (25), and / or ······························ ·· - that a reference line (38) is determined by drawing a connecting line on the inner side of the lower leg between the outermost ankle lift (32) and the lower end of the calf or between the end points (33, 35) of a fixed measurement line or curve which is on the inner side of the lower leg from the outermost ankle elevation (32) to the lower end point of the calf and / or - that a reference plane (25) is determined by containing the heel surface and the toe or ball surfaces of the foot Plane or by using the foot rearing plane as a reference plane, and / or - a reference line is determined by a circumference line (36) of the lower leg, possibly approximated by a circular line, at a height range (H) of about 60 to 70% of the lower leg, calculated from the sole of the foot or the supporting plane (25) of the foot.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that as a parameter - the height (A) of the measuring point (27) in the instep area above its base on the sole of the foot or above its base on the supporting plane (25) determined and used and / or the maximum distance or area between the measurement line through the measurement points (33, 34, 35) between the region of the outermost elevation of the inner ankle (32) and the lower end region of the calf on the inner side of the lower leg and one of these two Areas or the outermost measuring points (33, 35) connecting straight line (38) is determined and used and / or - the circumferential, area or radius difference of two, optionally approximated by a circular line, peripheral lines (36) of the leg (1) used which perimeters (36) were taken at successive times.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that for the obtained with the three-dimensional image recording method three-dimensional image of the surface of the recorded body part creates a pointwoike or the surface is replicated with a point cloud and the output size and reference size based on the points This point cloud can be formed.
    [6]
    6. Method according to one of claims 1 to 5, characterized in that - the measuring point (27) is selected from a subset of the point cloud, the subset comprising the points located in the instep area of the foot and those on the sole of the foot or • ft ·· » * · «« · · · · · · · · · - - - · · · · · · · · · · · · ··· the base (25) of the foot located foot points (37) from the or by the measuring point (27) extending perpendicular to the sole of the foot or to the footprint (25) and / or - the measuring line or curve with points of Point cloud is formed, which lie on the inside of the leg (1) in the region between the elevation of the inner ankle (32) and the region of the lower end of the calf, and / or - the measuring line formed by a peripheral line (36) around the lower leg Points of the point cloud is formed, which lie in a peripheral region of the lower leg, wherein the peripheral region is in a range of 60 to 75% of the height of the lower leg, measured from the footprint (25) of the foot or the sole of the foot.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that in particular approximately simultaneously, with the determination of the core size, the weight of the person to be measured is determined and evaluated together with at least one characteristic.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the color information of the image of the body part, in particular the mutual ratio of red, blue and yellow light, determined and evaluated together with at least one characteristic.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that determined by image recording in the infrared range temperature information of the body part and evaluated together with at least one characteristic.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that determined in the individual determination operations characteristics (7) are compared with each other and / or with predetermined thresholds.
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that the method for detecting the occurrence and / or the change and / or the assessment of the change of edema in the foot and / or lower leg and / or heart failure is used ,
    [12]
    12. Device for determining the change in a water accumulation in a body part, namely in the foot and / or lower leg (1) of a person, comprising ·························································· * • * · · tt I > An image acquisition unit (3) for producing at least one three-dimensional image of the body part, in particular for carrying out the method according to one of claims 1 to 11, characterized in that - a point cloud generator (6 ) which, with the image taken by the body part, creates a point cloud encompassing or representing the points of the surface of the body part and generates output variables and reference variables based on the points cloud points, and - that to the point cloud generator (6) and / or the image acquisition unit ( 3) a distance and / or position determination unit (7) for determining the position and / or the distance of an output variable, namely a measurement point and / or a measurement line or curve from a reference variable, namely a reference point and / or a reference line or curve and / or a reference plane has, wherein the determination of the distance un D / or the situation with mathematical or statistical algorithms takes place and a change of the distance and / or the position as a parameter and measure of the water accumulation in the body part and / or for the dependent of the accumulation of water volume of the body part for output and / or storage in a memory (4) is available.
    [13]
    Apparatus according to claim 12, characterized in that the apparatus comprises a comparator (5) for detecting and / or displaying changes in the characteristics recorded in successive determinations or in measurements made in temporal succession.
    [14]
    14. The apparatus of claim 12 or 13, characterized in that the device comprises a scale or is arranged on a scale and the weight value obtained by the balance of the distance and / or position determination unit (7) is supplied for evaluation and / or storage
    [15]
    15. Device according to one of claims 14, characterized in that the device on the base on which the person is located during the measurement has at least one temperature sensor and / or at least one pressure sensor and the values of the distance values obtained from these sensors. and / or position determination unit (7) are supplied for evaluation and / or storage. Vienna, June 28, 2012
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    同族专利:
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA727/2012A|AT513091B1|2012-06-28|2012-06-28|Method and device for determining the change in water accumulation in a body part|ATA727/2012A| AT513091B1|2012-06-28|2012-06-28|Method and device for determining the change in water accumulation in a body part|
    PCT/AT2013/050131| WO2014000012A1|2012-06-28|2013-06-28|Detecting leg oedemas|
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