Methods and apparatus for point-of-care applications

Abstract

Specifically, a handheld diagnostic device (112) for point-of-care applications is disclosed. The handheld diagnostic device (112) comprises: a. at least one diagnostic measurement unit (118) configured to perform at least one diagnostic measurement, the diagnostic measurement unit (118) comprising at least one test element port (124) for determining at least one diagnostic parameter of at least one patient by using at least one diagnostic test element (114); b. at least one camera (120) configured to capture at least one image of at least one wound (130) on a patient; c. at least one control unit (122), wherein the control unit (122) is configured to control the diagnostic measurements and to control the capture of images of the wound (130), and the control unit (122) is further configured to store at least one measurement result of the diagnostic measurements and at least one image in at least one database record for the patient. Additionally, a diagnostic system (110) and a diagnostic method are disclosed.

Description

[Technical field]

[0001] The present invention relates specifically to handheld diagnostic devices and systems for point-of-care applications.

[0002] The invention further relates to a diagnostic method, as well as a computer program and a computer readable storage medium. The devices, systems and methods may be used for medical diagnosis and treatment, particularly for point-of-care applications such as in hospitals or other medical facilities. [Background technology]

[0003] In the field of medical diagnostics, one or more diagnostic parameters of a patient are often measured. By way of example, one or more diagnostic parameters must be detected in a sample of a body fluid, such as blood, interstitial fluid, urine, saliva, or other types of body fluid. Examples of diagnostic parameters to be detected are glucose, triglycerides, lactate, cholesterol, coagulation parameters, or other types of diagnostic parameters typically present in these body fluids. Depending on the concentration, presence and / or time evolution of the diagnostic parameters, an appropriate treatment may be selected as required. Without narrowing the scope, the invention may be specifically described with respect to blood glucose measurement. However, it is noted that the invention may also be used for other types of diagnostic measurements using diagnostic test elements.

[0004] If the patient may be suffering from a disease such as diabetes, constant monitoring of blood glucose levels may be indicated, for example by blood glucose measurement using diagnostic test elements and handheld diagnostic devices. Furthermore, a further consequence of diabetes in particular but also other diseases may be a significant decrease in the patient's wound healing ability. Specially trained nurses, often also called "wound managers", may therefore be required to care for the wounds of these patients. The workflow that may need to be followed for this is captured in a paper-based process description and / or a paper-based progress description that may need to be supplemented by taking photographs of the wounds of these patients.

[0005] Generally, methods and devices known to those skilled in the art utilize wound management applications implemented on standard mobile devices such as smartphones or tablet computers. For these wound management applications, reference may be made, for example, to MRFriesen, C.Hamel and RD McLeod, A mHealth Application for Chronic Wound Care: Findings of a User Trial, Int. J.Environ.Res.Public Health Vol.10(11), 2013, 6199-6214, in which a user trial of an mHealth application for the documentation of ulcers (pressure ulcers) is reported. A software application has been developed for Android smartphones and tablets and tested in a personal care home. The software application is deployed to provide an electronic medical record of chronic wounds, replacing nurses' paper-based charting and integrating with the institution's larger eHealth framework.

[0006] L. Wang, PC Pedersen, DM Strong, B. Tulu, E. Agu and R. Ignotz, Smartphone-Based Wound Assessment System for Patients With Diabetes, IEEE Trans. Biomed. Eng. Vol. 62(2), 2015, 477-488, describes a wound image analysis system implemented solely on an Android smartphone. Wound images are captured by the camera on the smartphone with the aid of an image capture box. The smartphone then performs wound segmentation by applying an accelerated mean shift algorithm. Specifically, the foot contour is determined based on skin color, and the wound boundary is determined using a simplified connected region detection technique. Within the wound boundary, the healing status is then evaluated based on a red-yellow-black evaluation model. Furthermore, the healing status is quantitatively evaluated based on trend analysis of a given patient's time records.

[0007] Despite the advantages achieved by known methods and devices, in particular by using wound management applications on common mobile devices, some technical challenges remain. Thus, the wound management process is typically a paper-based process, and the merging of process reports and photos, typically taken by non-compatible personal mobile devices, into the electronic health record is a manual and therefore error-prone process that also has the risk of being forgotten. Furthermore, using wound management applications on a mobile device typically requires the use of either a personal mobile device or at least an additional mobile device by the medical professional. Thus, a major technical challenge relies on the fact that the use of personal and / or additional mobile devices in the field of medical diagnostics leads to information technology security and compliance issues. Moreover, personal and / or additional mobile devices usually lack physical robustness. Finally, hygiene requirements in the field of healthcare, such as cleaning and disinfection of used devices, are often not compatible with the use of personal mobile devices.

[0008] Issues to be resolved It is therefore desirable to provide a method and an apparatus that addresses the above-mentioned technical challenges of using personal and / or additional mobile devices in the field of medical diagnostics. In particular, a method and an apparatus shall be proposed that allows a user-friendly point-of-care application of diagnostic measurements and wound management processes with a high level of safety and high hygiene standards in information technology. Summary of the Invention

[0009] This problem is addressed by a handheld diagnostic device, a diagnostic system, a diagnostic method, a computer program and a computer readable storage medium with the features of the independent claims. Advantageous embodiments, which may be realized in a stand-alone manner or in any arbitrary combination, are set forth in the dependent claims.

[0010] When used below, the terms "have", "comprise" or "include" or any grammatical variants thereof are used inclusively. These terms may therefore refer both to the situation where, in addition to the features introduced by these terms, no further features are present in the entity described in this context, and to the situation where one or more additional features are present. As an example, the expressions "A has B", "A comprises B" and "A includes B" may both refer to the situation where, apart from B, no other elements are present in A (i.e., A consists solely and exclusively of B), and to the situation where, apart from B, one or more further elements are present in the entity A, such as element C, elements C and D, as well as further elements.

[0011] Furthermore, it should be noted that the terms "at least one," "one or more," or similar expressions indicating that a feature or element may be present one or more times are typically used only once when introducing each feature or element. In the following, in most cases, when referring to each feature or element, the expressions "at least one" or "one or more" will not be repeated, despite the fact that each feature or element may be present one or more than one time.

[0012] Furthermore, when used below, the terms "preferably", "more preferably", "particularly", "more particularly", "particularly", "more specifically" or similar terms are used in conjunction with any feature without limiting the possibility of substitution. Thus, the features introduced by these terms are optional features and are not intended to limit the scope of the claims in any way. The invention may be implemented by using alternative features, as recognized by those skilled in the art. Similarly, features introduced by "in an embodiment of the invention" or similar expressions are intended to be optional features without any limitation regarding alternative embodiments of the invention, without any limitation regarding the scope of the invention, and without any limitation regarding the possibility of combining the feature introduced in such a way with other optional or non-optional features of the invention.

[0013] In a first aspect of the present invention, a handheld diagnostic device, specifically for point-of-care applications, is disclosed. The handheld diagnostic device comprises: a. at least one diagnostic measurement unit configured to perform at least one diagnostic measurement, the diagnostic measurement unit comprising at least one test element port for determining at least one diagnostic parameter of at least one patient by using at least one diagnostic test element; b. at least one camera configured to capture at least one image of a patient, in particular at least one wound of the same patient; c. at least one control unit, the control unit configured to control the diagnostic measurements and to control the taking of images of the wound, the control unit further configured to store at least one measurement result of the diagnostic measurements and the at least one image in at least one database record of the patient.

[0014] The term "handheld diagnostic device" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any portable device configured to perform at least one diagnostic test on a patient and / or biological sample. A handheld diagnostic device may specifically be configured to be carried by a user in one hand due to its dimensions and / or its weight. Thus, by way of example, the volume of a handheld diagnostic device cannot exceed 0.001 m3, as outlined in more detail below, and / or the weight of a handheld diagnostic device cannot exceed 1 kg.

[0015] The handheld diagnostic device comprises at least one diagnostic measurement unit, at least one camera and at least one control unit. In particular, the handheld diagnostic device may be configured to perform at least one diagnostic measurement, such as for example to qualitatively and / or quantitatively determine the concentration of at least one analyte in a sample, such as a sample of a body fluid, to determine at least one diagnostic parameter of at least one patient. Thus, the handheld diagnostic device may in particular be or include at least one measurement device for measuring at least one diagnostic parameter, such as a blood glucose measurement device and / or a coagulation measurement device. Other options are also feasible.

[0016] Furthermore, the handheld diagnostic device may be configured for performing at least one wound management process, such as for taking at least one image of the wound of at least one patient, and for further processing of said image, such as for image processing, for example to determine the lateral extension of the wound. Thus, the handheld diagnostic device may be a combined handheld diagnostic device configured for both performing at least one diagnostic measurement and for assisting a user in the wound management of a patient. The handheld diagnostic device may further comprise a display and / or a screen, in particular a touch screen, configured for interaction with a user of the handheld diagnostic device. For example, the display of the handheld diagnostic device may be configured for displaying the results of the diagnostic measurement and / or for displaying the taken image. The handheld diagnostic device may be configured for point-of-care applications, such as by meeting standards for point-of-care applications and / or hospitals.

[0017] The term "point-of-care application" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not exclusively, refer to applications in specialized medical facilities, which applications are performed by specialized medical providers, specifically at or near the patient. For example, diagnostic testing of a patient using a handheld diagnostic device may be performed in a hospital or clinic. Other options are feasible.

[0018] The term "diagnostic measurement unit" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any device configured to determine the presence, concentration and / or temporal development of at least one diagnostic parameter of at least one patient. Specifically, the diagnostic measurement unit may be configured to perform diagnostic measurements using at least one diagnostic test element. Thus, the diagnostic measurement unit may comprise at least one test element port for receiving at least one diagnostic test element. By way of example, the diagnostic measurement unit may comprise a diagnostic measurement unit having at least one device for electrochemical and / or optical testing of a sample, such as using at least one electrochemical test element and / or at least one optical test element for testing a biological sample, such as a test strip or test cartridge.

[0019] Thus, the term "performing at least one diagnostic measurement" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a process of generating at least one representative result or a plurality of representative results indicative of one or more of at least one medical parameter and / or at least one diagnostic parameter, such as at least one parameter of a sample, such as the concentration of at least one analyte in the sample, the presence of at least one analyte in the sample, and / or the temporal occurrence of a diagnostic parameter in a sample, such as a sample of a patient's bodily fluid.

[0020] The term "diagnostic measurement", also referred to as "determining at least one diagnostic parameter" as used herein, is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to the quantitative and / or qualitative determination of at least one diagnostic parameter in any sample or aliquot of bodily fluid. For example, the bodily fluid may include one or more of blood, blood derivatives such as plasma or serum, interstitial fluid, urine, saliva or other types of bodily fluids and their derivatives. By way of example, the result of determining the diagnostic parameter may be the concentration of at least one analyte and / or the presence or absence of at least one analyte and / or another value of the at least one diagnostic parameter determined, such as a coagulation parameter. In particular, by way of example, the diagnostic measurement may be a blood glucose measurement, and thus the result of the diagnostic measurement may be, for example, a blood glucose concentration. In another example, the diagnostic measurement may be a coagulation measurement, and thus the result of the diagnostic measurement may be a coagulation value, in particular a temporal parameter such as the coagulation time or a parameter derived therefrom. In particular, a diagnostic measurement result value may be determined by the diagnostic measurement.

[0021] Thus, the term "diagnostic measurement value", also referred to as "measurement of diagnostic measurement" as used herein, is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a numerical representation of at least one diagnostic parameter, such as a concentration of at least one analyte in a sample, and / or another type of diagnostic parameter, such as a numerical representation of a coagulation value in a sample. By way of example, the at least one diagnostic parameter may be or may include a concentration of at least one analyte, such as at least one specific chemical compound, and / or may include other parameters. By way of example, one or more diagnostic parameters involved in metabolism, such as blood glucose, may be determined. Additionally or alternatively, other types of diagnostic parameters may be determined, such as pH value or coagulation value.

[0022] The term "patient" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to any special or customized meaning. The term may specifically refer to, but is not limited to, a person, regardless of the fact that the person may be in a healthy state or may suffer from one or more diseases. Specifically, a patient may be a person who has been examined by at least one medical professional. For example, a patient may be a person who suffers from diabetes and / or other diseases.

[0023] The term "diagnostic test element" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any device capable of detecting a diagnostic parameter in a sample. The diagnostic test element may specifically be a diagnostic test element in strip form, also referred to as a test strip. As used herein, the term "strip form" refers to an element having an elongated shape and thickness, the extension of the element in the lateral dimension exceeds the thickness of the element, for example, by at least 2 times, preferably at least 5 times, more preferably at least 10 times, most preferably at least 20 times, or even at least 30 times. Thus, the diagnostic test element may be or include at least one test strip. The diagnostic test element may further include at least one component or at least one reagent, e.g., a test chemical, that changes at least one detectable characteristic when the diagnostic parameter is present in the sample.

[0024] As used herein, the term "test chemicals", also referred to as "test chemicals", is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to any material or composition of materials adapted to change at least one detectable property in the presence of a diagnostic parameter. Generally, the property may be selected from electrochemically detectable properties and / or optically detectable properties such as a color change and / or a change in reflectance properties. Specifically, the test chemicals may be highly selective test chemicals that change the property only if the diagnostic parameter is present in a sample of bodily fluid applied to the diagnostic test element, but no change occurs in the absence of the diagnostic parameter. More preferably, the extent or change of the property may depend on the occurrence or concentration of the diagnostic parameter in the bodily fluid to allow for quantitative detection of the diagnostic parameter. When the test chemicals include electrochemical test chemicals, the diagnostic test element may be referred to as an "electrochemical test element". As another example, when the test chemicals include optical test chemicals, the diagnostic test element may be referred to as an "optical test element".

[0025] Moreover, the term "test element port" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to an apparatus for receiving and holding a diagnostic test element. Specifically, the test element port may be or include a test element holder for at least one diagnostic test element. The diagnostic test element may be located at a specific position in the test element holder such that movement of the diagnostic test element in at least one direction can be at least significantly suppressed. Thus, the measurement zone of the diagnostic test element may be located at a predefined position relative to the measurement unit. The diagnostic test element may specifically be configured to be reversibly placed in the test element port. Thus, the diagnostic test element may be removable from the test element port without further action. Additionally or alternatively, the handheld diagnostic device may also comprise at least one test element magazine configured to store a plurality of test elements and to further move the test elements to at least one predefined position relative to the measurement unit, specifically one by one, as an example, the test elements protrude from the test element port to allow application of a sample. Additionally, other embodiments are possible. For example, the test element port may be configured to receive at least one test strip. Thus, the test element port may also be referred to as a "test strip port."

[0026] As outlined above, the handheld diagnostic device comprises at least one camera. The term "camera" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to a device having at least one imaging element configured to record or capture spatially resolved one-, two-, or three-dimensional optical data or information. By way of example, the camera may comprise at least one camera chip, such as at least one CCD chip and / or at least one CMOS chip configured to record an image. As used herein, but not limited to, the term "image" may specifically relate to data recorded by using a camera, such as multiple electronic readings from an imaging element, such as the pixels of a camera chip.

[0027] The camera may comprise, in addition to at least one camera or imaging chip, one or more optical elements, for example one or more lenses or further elements such as apertures. By way of example, the camera may be a fixed focus camera with at least one lens that is fixedly adjusted relative to the camera. Alternatively, however, the camera may also comprise one or more variable lenses that may be adjusted automatically or manually. The invention shall be applicable in particular to cameras that are typically used in mobile applications, such as notebook computers, tablets or mobile phones, in particular smartphones. Thus, in particular, the camera may be part of a mobile device, such as a handheld diagnostic device, which comprises, besides at least one camera, one or more data processing devices, such as one or more data processors. However, other cameras may also be used.

[0028] The camera may in particular be a color camera. Thus, color information such as color values ​​of the three colors R, G, B for each pixel etc. may be provided or generated. A larger number of color values, such as four color values ​​for each pixel, for example R, G, G, B, etc., are also feasible. Color cameras are generally known to those skilled in the art. Thus, by way of example, a camera chip may consist of three or more different color sensors, color recording pixels, such as one pixel for red (R), one pixel for green (G) and one pixel for blue (B). Depending on the intensity of the respective color, for each pixel R, G, B etc., a value may be recorded by the pixel, such as a digital value ranging from 0 to 255. By way of example, instead of using a color triple such as R, G, B, a quadruple such as R, G, G, B may be used. The color sensitivity of the pixel may be generated by a color filter or by an appropriate intrinsic sensitivity of the sensor element used in the camera pixel. These techniques are generally known to those skilled in the art.

[0029] The term "capturing at least one image" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, one or more of imaging, image recording, image acquisition, and image capture. The term "capturing at least one image" may include capturing a single image and / or multiple images, such as a series of images. For example, capturing an image may include continuously recording a series of images, such as a video or video. Capturing at least one image may be initiated by a user action or may be initiated automatically, for example, upon automatically detecting the presence of at least one object within the camera's field of view and / or within a predefined sector of the field of view. These automatic image capture techniques are known, for example, in the field of automatic barcode readers, such as automatic barcode reading apps. Capturing the images may be performed, for example, by capturing a stream or "live stream" of images with the camera, and one or more of the images are stored automatically or by user interaction, such as pressing a button. Image acquisition may be supported by a processor in the handheld diagnostic device, and image storage may occur within a data storage device in the handheld diagnostic device.

[0030] The term "wound" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, an external injury to the patient's skin. Specifically, the wound may be an open wound on the patient's skin. Furthermore, the wound may refer to an injury requiring medical treatment, such as an acute, chronic and / or non-healing wound. The wound may specifically be located on the patient's foot and / or lower leg. For example, the wound may be a non-healing ulcer on the patient's foot and lower leg caused by a disease such as diabetes. The wound may be characterized by the extension of the wound, specifically the lateral extension, which represents the lateral size of the wound. In the context of the wound management process, the term "wound" may also include areas of the patient's skin that are prone to developing wounds in the future growth of the disease. Imaging of such areas prior to the development of visible wounds may be useful as a baseline for later evaluation of the wound.

[0031] The term "control unit" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to an electronic device configured to control the functions of a handheld diagnostic device. Specifically, the control unit may be configured to control diagnostic measurements, control the taking of images of a wound, and store patient data in a patient database record. Furthermore, the control unit may be configured to manage database records, specifically, manage database records of multiple patients. For example, the control unit may be configured to assign measurements of diagnostic measurements and images of a wound to at least one patient's electronic health record. Thus, the term "control" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to a process that performs and operates operations such as diagnostic measurements or taking of images.

[0032] The term "database" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to an organized collection of data that is generally stored and accessed electronically from a computer or computer system. A database may comprise or be comprised by a data storage device, as outlined in more detail below. A database may comprise at least one database management system that comprises software running on a computer or computer system, the software allowing interaction with one or more of a user, an application, or the database itself, such as to ingest and analyze data contained in the database. The database management system may further include facilities for managing the database. Thus, a database containing data may be constituted by a database system that includes, in addition to the data, one or more associated applications. Thus, the term "database record" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to at least one item of information stored in an organized manner in a database. Thus, by way of example, each database entry may include at least one package of information, and multiple packages of information may be related or linked to one another within the database. Additionally, a database record may include at least one item of information relating to a patient, such as at least one measurement result of a diagnostic measurement and at least one image. A database may include multiple database records relating to multiple patients.

[0033] Further, the database record may include at least one identification information identifying the patient, the at least one image, and the at least one measurement result. The database record may be at least partially stored in the handheld diagnostic device, in particular in at least one data storage device of the handheld diagnostic device. The database record may further be at least partially stored in at least one server device, in particular in a hospital information system, and the handheld diagnostic device may be configured to electronically communicate with the server device, in particular in a hospital information system.

[0034] The term "item of identifying information" as used herein is a broad term and should be given its ordinary and customary meaning to one of ordinary skill in the art and should not be limited to any special or customized meaning. The term may specifically refer to, but is not limited to, any characteristic that may be used to identify a patient. For example, an item of identifying information may be or include personal identification information, such as a patient's name or date of birth, and / or a patient identification number, such as a number given to a patient to uniquely identify the patient.

[0035] The term "data storage device" as used herein is a broad term and should be given its ordinary and customary meaning to one of ordinary skill in the art and should not be limited to any special or customized meaning. The term may specifically refer to, but is not limited to, any memory device configured to store data. Specifically, the data storage device may be an electronic, magnetic, and / or mechanical memory device. For example, the data storage device may be included in a handheld diagnostic device. The data storage device may specifically be further configured to store data in an organized manner, such as in a database, more specifically in at least one database record.

[0036] The term "server device" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a device capable of performing one or more operations with data to be processed. Specifically, the server device may comprise at least one processor that may be programmed by suitable software to perform one or more operations with data to be processed. The server device may be or comprise at least one cloud server. Additionally, the server device may be configured to store data such as a database, specifically at least one database record.

[0037] The term "hospital information system" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a system configured, in particular by software programming, to track, manage, and store documents. In particular, the hospital information system is based on a computer program. The hospital information system may comprise at least one data interface for exchanging data or commands or both with the at least one handheld diagnostic device and / or further device. The at least one interface may be or include one of a wired or wireless interface. Thus, the hospital information system may be configured to communicate with the at least one handheld diagnostic device and / or further device, for example, to exchange at least one item of information, at least one image, and / or at least one measurement result of a diagnostic measurement.

[0038] As outlined above, the control unit is configured to store the at least one measurement and the at least one image in at least one database record. The patient database record may be constituted at least in part by an electronic health record stored in a hospital information system. Thus, the control unit may be configured to assign the measurement and the image to at least one patient electronic health record.

[0039] The term "electronic health record" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to a systematic collection of electronically stored patient-related health information. For example, an electronic health record may store patient-related information such as the patient's name, age, and sex, as well as further health information such as current and / or past illnesses and / or treatments. Specifically, the health information stored in the electronic health record may be or may include at least one measurement result of at least one diagnostic measurement and at least one image of at least one wound of the patient. Furthermore, the electronic health record may be configured to accurately store health information in a protected environment and capture the patient's health status over time.

[0040] As outlined above, the handheld diagnostic device may be a portable device configured for point-of-care applications. Thus, the handheld diagnostic device may include at least one energy storage device for providing electrical energy to at least one of the diagnostic measurement unit, the camera, and the control unit. Furthermore, the handheld diagnostic device may be a wireless handheld diagnostic device. The handheld diagnostic device may be capable of measuring up to 0.001 m. 3 The handheld diagnostic device may have a volume of less than 100 rpm and a weight of less than 1 kg. Additionally, the handheld diagnostic device may include at least one display and / or at least one user interface.

[0041] The term "energy storage device" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any device configured to store electrical energy. Specifically, the energy storage device may be or include a battery, more specifically, a battery configured for multiple use. Thus, when the energy storage device is fully or partially discharged, the energy storage device may be configured to be recharged by electrical energy.

[0042] The term "user interface" as used herein is a broad term and should be given its ordinary and customary meaning to one of ordinary skill in the art and should not be limited to a special or customized meaning. The term may refer to features of a handheld diagnostic device configured to interact with its environment, such as for the purpose of exchanging information unidirectionally or bidirectionally, such as for, but not limited to, the exchange of one or more of data or commands. For example, a user interface of a handheld diagnostic device may be configured to share information with a user and receive information by a user. A user interface of a handheld diagnostic device may be a feature that visually interacts with a user, such as a display, or a feature that acoustically interacts with a user. A user interface may include, by way of example, one or more of the following: a graphical user interface, a data interface, such as a wireless and / or wired data interface.

[0043] As outlined above, the handheld diagnostic device is configured to perform at least one diagnostic measurement. The diagnostic parameter may include at least one parameter selected from the group consisting of: glucose concentration, in particular blood glucose level, in at least one body fluid of the patient; coagulation parameter of the patient; ketone concentration in at least one body fluid of the patient, lactate concentration in at least one body fluid of the patient. The diagnostic parameter is determined by using at least one diagnostic test element, which may include at least one of an electrochemical test element and / or an optical test element. The diagnostic test element may include at least one test strip. Thus, the test element port included in the diagnostic measurement unit may include at least one test strip port.

[0044] Furthermore, the handheld diagnostic device may be configured to identify at least one of the patient or the user of the handheld diagnostic device. Thus, the handheld diagnostic device may be configured to detect at least one identifier that identifies the patient or the user, respectively. The identifier may include at least one identifier selected from the group consisting of: an optical identifier, in particular at least one of a barcode or a QR code; an electronic identifier, in particular an RFID tag and / or an NFC tag. Alternatively, the operator may log in via a virtual keyboard. The handheld diagnostic device may further be configured to identify the patient or the user, respectively, by using image recognition, in particular by using face recognition. The handheld diagnostic device may also comprise at least one biometric sensor configured to identify the patient by determining at least one biometric parameter of the patient or the user, respectively.

[0045] The term "user" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to any special or customized meaning. The term may specifically refer to, but is not limited to, a person using a handheld diagnostic device. Specifically, a user may be a medical professional such as a nurse or doctor or other medically trained person.

[0046] The term "identifier" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not exclusively, refer to an element or combination of elements configured to store, for example in a readable form, in particular in a machine-readable form, one or more information items identifying a patient and / or a user of a handheld diagnostic device. In particular, the information item stored in the identifier may be or include at least one item of identifying information. The identifier may include at least one of an optical identifier, an electronic identifier, a magnetic identifier, or a mechanical identifier. By way of example, the identifier, in particular the optical identifier, may be or include at least one of a one-dimensional or two-dimensional code and / or a readable information tag, such as one or more of a bar code, a QR code, or another type of code, attached directly or indirectly to the patient and / or user, such as applied to the patient and / or user via at least one of an identification card, a badge, a bracelet, a wristband. As another example, the identifier, in particular the electronic identifier, may be or include at least one RFID tag and / or NFC tag. Further embodiments or options of the identifier are described in more detail below. The information stored in the identifier may be detected using a suitable detection device.

[0047] Thus, the term "detecting an identifier" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to a process of obtaining at least one information item, such as at least one information item stored in an identifier, such as an electronic format, by using a suitable detection device, but is not limited thereto. The process of detecting an identifier may specifically be performed electronically. The detection may further depend on the type of identifier. Thus, the detection may include optical detection, for example by optical scanning, if the identifier includes an optical identifier, such as a barcode and / or a QR code. If the identifier includes an electronic identifier, such as an RFID code and / or an NFC tag, the detection of the identifier may include electronic detection, such as detection by Near Field Communication (NFC). Other options are also feasible. Furthermore, the detection device may be or include at least one of a barcode reader, a QR code reader, such as a camera, or an RFID reader. Specifically, the detection device may be included in a handheld diagnostic device. Thus, the handheld diagnostic device may be configured to detect at least one identifier and thereby identify at least one of the patient and / or user of the handheld diagnostic device.

[0048] The term "barcode" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to any special or customized meaning. The term may specifically refer to binary optical information, such as, but not limited to, a binary sequence of optical information, such as a sequence of parallel lines having different widths, a binary sequence that encodes information, such as an array of numbers and / or numbers and / or letters. Thus, a barcode may be a sequence of single colored lines that have a high contrast compared to the background. Specifically, a barcode may include black lines on a white background.

[0049] The term "QR code" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to any special or customized meaning. The term may specifically refer to, but is not limited to, a quadratic matrix of binary pixels, a matrix that encodes information such as numbers and / or an array of numbers and / or letters. The pixels of the quadratic matrix may have high contrast compared to the background. Specifically, the pixels of the matrix may include black squares arranged on a white background. Additionally, the QR code may include orientation indications that allow a detection device of the QR code to align the matrix.

[0050] The term "RFID tag" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to a label configured to exchange data information with a detection device by using radio frequency electromagnetic radiation, such as, but not limited to, using the NFC standard. The RFID tag may further comprise an antenna configured to receive and emit radio frequency signals and an electronic chip, such as a microchip, configured to store data information. Specifically, the RFID tag may be a flexible substrate having an electronic conductive coil and, optionally, at least one microchip.

[0051] The term "image recognition" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a process of recognizing or identifying one or more features in an image. Specifically, image recognition may include visually identifying a patient and / or a user by using at least one image of the patient or user, respectively. Specifically, a patient or a user may be identified by imaging a particular characteristic of the patient or user, respectively. Thus, the process of image recognition may include imaging at least one image of the patient or user using at least one camera of the handheld diagnostic device. When used in the context of a wound management process, image recognition may specifically include visually identifying at least one item of diagnostic information from an image, specifically a feature of the patient's wound, such as at least one color information and / or size information of the wound.

[0052] The term "facial recognition" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not be limited to, refer to a process of image recognition whereby a patient's or user's face may be used to identify the patient or user, respectively. Specifically, the entire face of the patient or user, respectively, may be used to identify the patient or user by facial recognition. As another example, only a portion of the patient's or user's face, such as at least one eye and / or at least one ear of the patient or user, respectively, may be used to identify the patient or user, respectively.

[0053] The term "biometric sensor" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to any device configured to detect at least one biometric parameter of a patient and / or user. In particular, the biometric sensor may be or comprise a camera for detecting a biometric parameter by image recognition. The biometric sensor may also be or comprise at least one fingerprint sensor. Other options are also feasible. Furthermore, the biometric sensor may be included in the handheld diagnostic device. For example, the camera for detecting at least one biometric parameter by image recognition may be the same camera configured to capture at least one image of the at least one wound of the patient. However, the camera for detecting at least one biometric parameter by image recognition may also be different from said camera, such as a front camera, referring to the user of the handheld diagnostic device.

[0054] Thus, the term "biometric parameter" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, a biological characteristic of a patient or user suitable for identifying the patient or user, respectively. In particular, the biometric parameter may be or include an intrinsic biological characteristic of a patient or user, which may be constant over time, detectable, and even unique to every person, such as a patient or user. As an example, the biological parameter may be or include at least one fingerprint of at least one finger or thumb of the patient or user. As another example, the biological parameter may also include characteristics detectable by image recognition, such as the iris and / or the geometric shape of the patient's or user's face.

[0055] Furthermore, as outlined above, the handheld diagnostic device comprises at least one control unit configured to control the diagnostic measurements and to control the taking of images of the wound. Furthermore, the control unit may be configured to execute at least one wound management process. The wound management process may include deriving at least one item of diagnostic information relating to at least one wound of the patient, which may be at least partially visible in the image. The wound management process may include: - displaying an image of the wound on a display of a handheld diagnostic device; - providing at least one measurement tool to a user, the measurement tool being configured to derive at least one diagnostic information item from the image, in particular configured to determine the lateral extension of the wound; providing at least one image recognition tool configured to automatically derive at least one diagnostic information item from the image, in particular at least one image analysis tool configured to determine color information of the wound; providing at least one display tool for displaying at least one previous image of the wound; providing a download functionality for downloading patient information from at least one server device to a handheld diagnostic device; providing at least one graphic tool for displaying at least one time course of at least one diagnostic parameter related to the wound; - Escalation of the diagnostic information item, specifically providing at least one method of communication to a specialized medical professional.

[0056] Additionally or alternatively, other options are possible.

[0057] The term "wound management process" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not exclusively, refer to any process that assists a patient and / or a medical professional in the treatment and / or monitoring of at least one wound. Thus, by way of example, the wound management process may include determining at least one diagnostic information item of at least one wound of the patient. Specifically, the wound management process may include one or more steps of taking and optionally recording at least one image of at least one wound of the patient and subsequent examination of the taken image. The examination of the taken image may be performed automatically by a suitable software application, as outlined in more detail below. Furthermore, the examination of the taken image may be performed by a medical professional. At least one step of the wound management process may further include examination of a particular part of the patient's body, such as the patient's foot, leg or arm, specifically by a medical professional. Furthermore, the wound management process may include examination of the patient's entire body, performed in two or more successive steps. Thus, at each step, images of the patient's wounds may be taken and examined to determine at least one item of diagnostic information for each wound. Further, a user of the handheld diagnostic device may be guided by the software application through the wound management process, and the software application may be configured to guide the user step-by-step through the wound management process. In particular, the software application may be configured to prompt the user to take at least one image of the wound at each of at least one step of the wound management process.

[0058] Thus, the term "diagnostic information item" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any characteristic related to the health of a patient's wound. For example, a diagnostic information item may be suitable for making a medical diagnosis and selecting an appropriate treatment for a wound. Furthermore, a diagnostic information item may also be suitable for tracking the healing process of a wound.

[0059] As outlined above, the control unit is configured to store the at least one measurement result of the diagnostic measurement and the at least one image in at least one database record of a patient. The control unit may be further configured to manage a plurality of patient database records. The management of a plurality of patient database records may include identifying a patient and assigning the at least one measurement result of the diagnostic measurement and the at least one image to a respective patient electronic health record.

[0060] The handheld diagnostic device may further comprise at least one user management unit. The user management unit may be configured to restrict use of at least some of the functions of the handheld diagnostic device to at least one user group. A user group may be defined by at least one of the following: a list of users; a group of users that meet at least one predefined clearance condition. Furthermore, the user management unit may be configured to block a user of the handheld diagnostic device if the user is not authenticated as a user with permission to use the handheld diagnostic device.

[0061] The term "user management unit" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to, but is not limited to, any device configured to verify the authorization of a user to use a handheld diagnostic device. The user management unit may be embodied fully or partially as a hardware unit. Alternatively, the user management unit may also be embodied fully or partially by software, such as software running on a control unit, specifically software running on a processor of the control unit.

[0062] Specifically, the user management unit may be configured to identify users of the handheld diagnostic device, verify the authentication of the users, and further restrict the use of at least some of the functions of the handheld diagnostic device to the respective users. For example, if the user may not be authorized to perform diagnostic measurements, the user management unit may prevent the user from performing diagnostic measurements. As another example, if the user may not be able to perform a wound management process, the handheld diagnostic device may prevent the user from performing a wound management process. If the user is not authenticated at all to use the handheld diagnostic device, the user management unit may be configured to block the use of the handheld diagnostic device for the user. Furthermore, the authentication of the user may be verified based on the user's affiliation to at least one user group. The user group may be defined by at least one of a list of users or a group of users that meet at least one predefined clearance condition, as outlined above. Thus, the term "predefined clearance condition" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but without limitation, refer to a predefined requirement that a user of a handheld diagnostic device must meet to be able to use the handheld diagnostic device. Specifically, the predefined clearance condition may refer to the completion of a training course for a particular function of the handheld diagnostic device. For example, the training course may teach the user how to properly handle the handheld diagnostic device, such as for performing diagnostic measurements and / or performing wound management processes. Thus, information regarding the completion of a training course by a particular user may be stored in the data storage device of the handheld diagnostic device and additionally or alternatively in the server device.

[0063] Furthermore, the handheld diagnostic device may comprise at least one data interface for exchanging data unidirectionally or bidirectionally with at least one server device. The data interface may comprise at least one of a wireless interface or a wired interface. The data interface may be configured to communicate with at least one data management system. In particular, the data management system may be or may include a hospital information system. Thus, the data interface may be further configured to communicate with the server device by using at least one secure data transmission. The secure data transmission may include encryption of the transmitted data. In particular, the encryption may ensure that only the receiving device, in particular the server device, is suitable to read the transmitted data. For example, the secure data transmission may be realized by end-to-end encryption.

[0064] The at least one control unit included in the handheld diagnostic device may further comprise at least one processor, which may be specifically configured by software programming to control the diagnostic measurements, control the taking of images of the wound, and store the at least one measurement result of the diagnostic measurements and the images in at least one database record of the patient.

[0065] The term "processor" as generally used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to any logic circuitry configured to perform the basic operations of a computer or system, and / or generally, a device configured to perform calculations or logical operations. In particular, the processor may be configured to process the basic instructions that drive the computer or system. By way of example, the processor may comprise at least one arithmetic logic unit (ALU), at least one floating point unit (FPU), such as a numeric coprocessor or numeric coprocessor, a number of registers, specifically registers configured to provide operands to the ALU and store the results of the operations, and memory, such as L1 and L2 cache memories. In particular, the processor may be a multi-core processor. In particular, the processor may be or include a central processing unit (CPU). Additionally or alternatively, the processor may be or include a microprocessor, and thus in particular, the elements of the processor may be included in one single integrated circuit (IC) chip. Additionally or alternatively, the processor may be or include one or more application specific integrated circuits (ASICs) and / or one or more field programmable gate arrays (FPGAs), etc. The processor may be specifically configured, such as by software programming, to perform one or more evaluation operations.

[0066] In a further aspect of the present invention, a diagnostic system is disclosed, particularly for point-of-care applications, comprising: A. At least one handheld diagnostic device according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below; B. At least one server device configured to obtain at least one measurement result of a diagnostic measurement and / or at least one image of at least one wound of a patient from the handheld diagnostic device.

[0067] The server device included in the diagnostic system may be part of a hospital information system. Further, the diagnostic system may include a plurality of handheld diagnostic devices.

[0068] The term "system" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but not limited to, refer to any set of interacting or interdependent component parts forming a whole. Specifically, the components may interact with each other to perform at least one common function. At least two components may be processed independently or may be combined or connectable. Thus, the term "diagnostic system" may generally refer to at least two elements or a group of components that can interact to perform at least one of the following: diagnostic measurement; wound management process. The diagnostic system may specifically be a device comprising at least two components, such as at least one handheld diagnostic device and / or at least one server device. For example, the diagnostic system may comprise at least one diagnostic measurement unit and at least one diagnostic test element for performing at least one diagnostic measurement. Additionally or alternatively, the diagnostic system may include at least one handheld diagnostic device that may be configured to perform at least one wound management process, and patient data obtained from the handheld diagnostic device may be transmitted to a server device also included in the diagnostic system.

[0069] The term "patient data" as used herein is a broad term and should be given its ordinary and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically refer to any kind of patient-related information, but is not limited to it. Specifically, the patient data may be or may include at least one of the following: an image of the patient's wound; an identification information item; a diagnostic information item. The patient data may be collected via at least one of the following: performing at least one diagnostic measurement; taking at least one image of the patient's wound; detecting at least one identifier; performing at least one wound management process; manually entering the patient data into an electronic health record. The patient data may be at least partially stored in a storage device of the handheld diagnostic device. Furthermore, the patient data may be at least partially stored in a server device, specifically a hospital information system. More specifically, the patient data may be stored in at least one database record of the patient, such as an electronic health record.

[0070] In a further aspect of the present invention, a diagnostic method is disclosed. The method includes the following steps, which may be performed in a given order, by way of example. However, it should be noted that different orders are possible. Furthermore, it is also possible to perform one or more of the method steps once or repeatedly. Furthermore, it is possible to perform two or more of the method steps simultaneously or with overlapping times. The method may include additional method steps not described. The method includes using at least one handheld diagnostic device according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below.

[0071] The method further comprises: i. performing at least one diagnostic measurement, the diagnostic measurement comprising using a diagnostic measurement unit and at least one diagnostic test element for determining at least one diagnostic parameter of at least one patient; ii. capturing at least one image of at least one wound of the patient by using a camera of the handheld diagnostic device; iii. storing the at least one measurement result of the diagnostic measurement and the at least one image in at least one database record for the patient.

[0072] The diagnostic measurement carried out in step i. of the diagnostic method may specifically be or include at least one in vitro measurement. The term "in vitro measurement" as used herein is a broad term and should be given its normal and customary meaning to those skilled in the art and should not be limited to a special or customized meaning. The term may specifically, but is not limited to, refer to a method of performing a measurement outside an organism. In particular, an in vitro measurement may use components of an organism that are isolated from their normal biological environment. For example, a diagnostic measurement may use a sample of a body fluid that is isolated from a patient and further applied to a diagnostic test element. Thus, step i. of the diagnostic method may include applying at least one sample of a patient's body fluid to at least one diagnostic test element.

[0073] Furthermore, steps i. and ii. of the diagnostic method may be performed on one and the same patient within a period of 15 minutes or less. The results of the diagnostic measurements and the images may be combined. Thus, in general, the performance of at least one diagnostic measurement and the taking of at least one image of at least one wound may be correlated in time, making it possible to correlate the results of both steps. Thus, by way of example, the condition of the wound may be associated or correlated with the blood glucose measurement.

[0074] The diagnostic method may further include deriving at least one diagnostic information item related to the patient's wound from the image. Additionally, the diagnostic method may include storing the at least one diagnostic information item in a database record of the patient, in particular in the patient's electronic health record.

[0075] A further aspect of the present invention is a computer program which, when executed by a control unit of a handheld diagnostic device according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, causes the control unit to: - prompting a user to perform a diagnostic measurement by using a diagnostic measurement unit and a diagnostic test element; - prompting a user to capture at least one image of at least one wound on a patient by using a camera; - storing at least one measurement result of the diagnostic measurement and at least one image in at least one database record of the patient.

[0076] Similarly, a computer readable storage medium that, when executed by a control unit of a handheld diagnostic device according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, causes the control unit to: - prompting a user to perform a diagnostic measurement by using a diagnostic measurement unit and a diagnostic test element; - prompting a user to capture at least one image of at least one wound on a patient by using a camera; - storing at least one measurement result of a diagnostic measurement and at least one image in at least one database record for a patient; and

[0077] In a further aspect of the present invention, a computer program is disclosed comprising instructions which, when executed by a diagnostic system according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, cause a server device of the diagnostic system to obtain patient data from the handheld diagnostic device, the patient data generated by a diagnostic method according to the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, the patient data comprising at least one measurement result of a diagnostic measurement and at least one image of at least one wound of the patient, and further cause the server device of the diagnostic system to store the patient data in at least one database record for the patient.

[0078] Similarly, a computer-readable storage medium is disclosed comprising instructions, which when executed by a diagnostic system of the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, cause a server device of the diagnostic system to obtain patient data from a handheld diagnostic device, the patient data generated by a diagnostic method of the present invention, such as according to any one of the embodiments disclosed above and / or according to any one of the embodiments disclosed in more detail below, the patient data including at least one measurement result of a diagnostic measurement and at least one image of at least one wound of the patient, and further cause the server device of the diagnostic system to store the patient data in at least one database record for the patient.

[0079] As used herein, the term "computer-readable storage medium" may specifically refer to a non-transitory data storage means such as a hardware storage medium on which computer-executable instructions are stored. A computer-readable data carrier or storage medium may specifically be or include a storage medium such as a random access memory (RAM) and / or a read-only memory (ROM).

[0080] The computer program may also be embodied as a computer program product. As used herein, a computer program product may refer to a program as a tradeable product. The product may generally be present in any format, such as a paper format, or on a computer-readable data carrier and / or a computer-readable storage medium. In particular, the computer program product may be distributed over a data network.

[0081] The method and device according to the present invention may provide many advantages over similar methods and devices known in the art. In particular, the method and device described herein may digitize the above-mentioned workflow of the wound management process by executing it on a dedicated handheld diagnostic device for point-of-care application. Thus, compared to the methods and devices known in the art providing smartphone-based wound management applications, the integration into a portable diagnostic device for point-of-care application may have a large impact since the portable diagnostic device may already be integrated into the normal and regulatory body hospital workflow. For example, there may be rules on who has access to the handheld diagnostic device and what the procedures are for cleaning and disinfecting the handheld diagnostic device. Furthermore, integrating the wound management process into the handheld diagnostic device may avoid the use of personal and / or additional mobile devices. This may also include the synergistic effect that the user of the handheld diagnostic device may be registered only once by the handheld diagnostic device to perform the tasks of both diagnostic measurements as well as the wound management process. Furthermore, the patient database record and the user's organization user database record may already be available, as may the camera of the handheld diagnostic device for taking images of the patient's wound.

[0082] Furthermore, integrating the wound management process into a handheld diagnostic device approved and certified for point-of-care use may have significant advantages compared to the use of common mobile devices for such wound management processes: such dedicated point-of-care handheld diagnostic devices meet much higher requirements regarding both cleaning and disinfection, as well as robustness of the device, which are also related to the wound management process taking place in the same environment.

[0083] The workflow of the wound management process, including taking at least one image, may be implemented in an application that guides the user through the necessary steps, thus reducing the user's mental load. The handheld diagnostic device may communicate patient data, such as at least one measurement result and at least one image, via a data interface to the hospital information system or any other designated gateway to electronic health records. Important synergies may result from the fact that the handheld diagnostic device may already be tasked with meeting and ensuring specific information technology and cybersecurity requirements and configurations.

[0084] Furthermore, by adding an application for performing a wound management process to a handheld diagnostic device configured to perform at least one diagnostic measurement, a synergy with glucose management for patients suffering from diabetes can be used. Thus, the handheld diagnostic device can provide a user-friendly diagnostic measurement, such as blood glucose measurement, and a user-friendly wound management process by combining both features in one and the same device. Furthermore, the methods and devices described herein can enable cross-correlation of patient data, such as at least one measurement result of a diagnostic measurement and at least one captured image of the patient's wound, which can also open up synergies in the medical treatment of the patient.

[0085] In summary, without excluding further possible embodiments, the following embodiments can be envisaged: Embodiment 1: A handheld diagnostic device, particularly for point-of-care applications, comprising: a. at least one diagnostic measurement unit configured to perform at least one diagnostic measurement, the diagnostic measurement unit comprising at least one test element port for determining at least one diagnostic parameter of at least one patient by using at least one diagnostic test element; b. at least one camera configured to capture at least one image of a patient, in particular at least one wound of the same patient; c. A handheld diagnostic device comprising: at least one control unit, the control unit configured to control diagnostic measurements and to control taking of images of the wound, the control unit further configured to store at least one measurement result of the diagnostic measurement and the at least one image in at least one database record of the patient.

[0086] Embodiment 2: A handheld diagnostic device as described in embodiment 1, wherein the database record includes at least one item of identification information identifying the patient, at least one image, and at least one measurement result.

[0087] Embodiment 3: A handheld diagnostic device as described in embodiment 1 or 2, wherein the database record is at least partially stored in the handheld diagnostic device, in particular in at least one data storage device of the handheld diagnostic device.

[0088] Embodiment 4: A handheld diagnostic device as described in any one of embodiments 1 to 3, wherein the database record is further at least partially stored in at least one server device, specifically a hospital information system, and the handheld diagnostic device is configured to electronically communicate with the server device, specifically a hospital information system.

[0089] Embodiment 5: A handheld diagnostic device as described in any one of embodiments 1 to 4, wherein the patient database record is constituted at least in part by an electronic health record stored in a hospital information system.

[0090] Embodiment 6: A handheld diagnostic device as described in embodiment 5, wherein the control unit is configured to assign the measurement results and images to at least one patient's electronic medical record.

[0091] Embodiment 7: A handheld diagnostic device as described in any one of embodiments 1 to 6, wherein the handheld diagnostic device comprises at least one energy storage device for supplying electrical energy to at least one of the diagnostic measurement unit, the camera, and the control unit.

[0092] Embodiment 8: A handheld diagnostic device according to any one of embodiments 1 to 7, wherein the handheld diagnostic device is a wireless handheld diagnostic device.

[0093] Embodiment 9: A handheld diagnostic device as described in any one of embodiments 1 to 8, wherein the handheld diagnostic device has a volume of less than 0.001 m3.

[0094] Embodiment 10: A handheld diagnostic device as described in any one of embodiments 1 to 9, wherein the handheld diagnostic device has a weight of less than 1 kg.

[0095] Embodiment 11: A handheld diagnostic device according to any one of embodiments 1 to 10, wherein the handheld diagnostic device comprises at least one display and at least one user interface.

[0096] Embodiment 12: A handheld diagnostic device as described in any one of embodiments 1 to 11, wherein the diagnostic parameters include at least one parameter selected from the group consisting of glucose concentration, particularly blood glucose level, in at least one body fluid of the patient, coagulation parameters of the patient, ketone concentration in at least one body fluid of the patient, lactate concentration in at least one body fluid of the patient.

[0097] Embodiment 13: A handheld diagnostic device according to any one of embodiments 1 to 12, wherein the diagnostic test element comprises at least one of an electrochemical test element and an optical test element.

[0098] Embodiment 14: A handheld diagnostic device as described in any one of embodiments 1 to 13, wherein the test element comprises at least one test strip and the test element port includes at least one test strip port.

[0099] Embodiment 15: A handheld diagnostic device as described in any one of embodiments 1 to 14, wherein the handheld diagnostic device is further configured to identify at least one of a patient or a user of the handheld diagnostic device.

[0100] Embodiment 16: A handheld diagnostic device as described in embodiment 15, wherein the handheld diagnostic device is configured to detect at least one identifier that identifies a patient or a user, respectively.

[0101] Embodiment 17: A handheld diagnostic device as described in embodiment 16, wherein the identifier comprises at least one identifier selected from the group consisting of an optical identifier, in particular at least one of a barcode or a QR code, an electronic identifier, in particular an RFID tag and / or an NFC tag.

[0102] Embodiment 18: A handheld diagnostic device as described in any one of embodiments 15 to 17, wherein the handheld diagnostic device is configured to identify a patient or a user, respectively, by using image recognition, in particular by using facial recognition.

[0103] Embodiment 19: A handheld diagnostic device as described in any one of embodiments 15 to 18, further comprising at least one biometric sensor configured to identify a patient by determining at least one biometric parameter of the patient or user, respectively.

[0104] Embodiment 20: A handheld diagnostic device as described in any one of embodiments 1 to 18, wherein the control unit is further configured to execute at least one wound management process, the wound management process including deriving at least one diagnostic information item relating to at least one wound of the patient that is at least partially visible in the image.

[0105] Embodiment 21: The wound management process comprises: - displaying an image of the wound on a display of a handheld diagnostic device; - providing at least one measurement tool to a user, the measurement tool being configured to derive at least one diagnostic information item from the image, in particular configured to determine the lateral extension of the wound; providing at least one image recognition tool configured to automatically derive at least one diagnostic information item from the image, in particular at least one image analysis tool configured to determine color information of the wound; providing at least one display tool for displaying at least one previous image of the wound; providing a download functionality for downloading patient information from at least one server device to a handheld diagnostic device; providing at least one graphic tool for displaying at least one time course of at least one diagnostic parameter related to the wound; - providing at least one method of escalation of diagnostic information items to specialized medical professionals.

[0106] Embodiment 22: A handheld diagnostic device as described in any one of embodiments 1 to 21, wherein the control unit is configured to manage database records of multiple patients.

[0107] Embodiment 23: A handheld diagnostic device as described in any one of embodiments 1 to 22, further comprising at least one user management unit, the user management unit configured to restrict use of at least a portion of the functions of the handheld diagnostic device to at least one user group.

[0108] Embodiment 24: A handheld diagnostic device as described in embodiment 23, wherein the user group is defined by at least one of a list of users, a group of users who meet at least one predefined clearance condition.

[0109] Embodiment 25: A handheld diagnostic device as described in embodiment 23 or 24, wherein the user management unit is configured to block use of the handheld diagnostic device if a user of the handheld diagnostic device is not authenticated as a user with permission to use the handheld diagnostic device.

[0110] Embodiment 26: A handheld diagnostic device as described in any one of embodiments 1 to 25, further comprising at least one data interface for exchanging data with at least one server device.

[0111] Embodiment 27: A handheld diagnostic device as described in embodiment 26, wherein the data interface is configured to communicate with at least one data management system.

[0112] Embodiment 28: A handheld diagnostic device as described in embodiment 26 or 27, wherein the data interface is configured to communicate with the server device by using at least one secure data transmission.

[0113] Embodiment 29: A handheld diagnostic device as described in any one of embodiments 1 to 28, wherein the control unit comprises at least one processor, the processor configured by software programming to control diagnostic measurements, control capturing images of the wound, and store at least one measurement result of the diagnostic measurements and the images in at least one database record of the patient.

[0114] Embodiment 30: A diagnostic system, particularly for point-of-care applications, comprising: A. At least one handheld diagnostic device according to any one of embodiments 1 to 29; B. A diagnostic system comprising: at least one server device configured to obtain at least one measurement result of a diagnostic measurement and / or at least one image of at least one wound of a patient from a handheld diagnostic device.

[0115] Embodiment 31: A diagnostic system as described in embodiment 30, wherein the server device is part of a hospital information system.

[0116] Embodiment 32: A diagnostic system as described in embodiment 30 or 31, wherein the diagnostic system comprises a plurality of handheld diagnostic devices.

[0117] Embodiment 33: A diagnostic method, in particular for point-of-care applications, comprising the use of at least one handheld diagnostic device according to any one of embodiments 1 to 29 relating to a handheld diagnostic device, i. performing at least one diagnostic measurement, the diagnostic measurement comprising using a diagnostic measurement unit and at least one diagnostic test element for determining at least one diagnostic parameter of at least one patient; ii. capturing at least one image of at least one wound of the patient by using a camera of the handheld diagnostic device; iii. storing the at least one measurement result of the diagnostic measurement and the at least one image in at least one database record for the patient.

[0118] Embodiment 34: The method of embodiment 33, wherein the diagnostic measurement in step i. is an in vitro measurement.

[0119] Embodiment 35: The method of any one of embodiments 33 or 34, wherein step i. comprises applying at least one sample of the patient's bodily fluid to at least one diagnostic test element.

[0120] Embodiment 36: The method of any one of embodiments 33 to 35, wherein steps i. and ii. are performed on the same patient within a period of 15 minutes or less.

[0121] Embodiment 37: The method according to any one of embodiments 33 to 36, wherein the measurement result of the diagnostic measurement is combined with an image.

[0122] Embodiment 38: The method of any one of embodiments 33 to 37, wherein the method further comprises deriving at least one diagnostic information item related to the patient's wound from the image.

[0123] Embodiment 39: The method of embodiment 38, wherein the method further comprises storing at least one diagnostic information item in the patient's database record.

[0124] Embodiment 40: A computer program comprising: When the program is executed by the control unit of the handheld diagnostic device according to any one of the first to second embodiments, the control unit is - prompting a user to perform a diagnostic measurement by using a diagnostic measurement unit and a diagnostic test element; - prompting a user to capture at least one image of at least one wound on a patient by using a camera; - storing at least one measurement result of the diagnostic measurement and at least one image in at least one database record of the patient.

[0125] Embodiment 41: A computer-readable storage medium, comprising: When executed by a control unit of a handheld diagnostic device according to any one of claims 1 to 29, the control unit is - prompting a user to perform a diagnostic measurement by using a diagnostic measurement unit and a diagnostic test element; - prompting a user to capture at least one image of at least one wound on a patient by using a camera; - storing at least one measurement result of the diagnostic measurement and at least one image in at least one database record for the patient.

[0126] Embodiment 42: A computer program, which when executed by the diagnostic system of any one of embodiments 30 to 32, causes a server device of the diagnostic system to obtain patient data from a handheld diagnostic device, the patient data being generated by the diagnostic method of any one of embodiments 33 to 39, the patient data including at least one measurement result of a diagnostic measurement and at least one image of at least one wound of the patient, and further includes instructions to cause the server device of the diagnostic system to store the patient data in at least one database record of the patient.

[0127] Embodiment 43: A computer-readable storage medium comprising instructions, when executed by the diagnostic system of any one of embodiments 30 to 32, for causing a server device of the diagnostic system to acquire patient data from a handheld diagnostic device, the patient data being generated by the diagnostic method of any one of embodiments 33 to 39, the patient data including at least one measurement result of a diagnostic measurement and at least one image of at least one wound of the patient, and further causing the server device of the diagnostic system to store the patient data in at least one database record of the patient. [Brief description of the drawings]

[0128] Further optional features and embodiments are disclosed in more detail in the following description of the embodiments, preferably in conjunction with the dependent claims. Here, each optional feature may be realized in an independent manner as well as in any possible combination, as understood by a person skilled in the art. The scope of the present invention is not limited by the preferred embodiments. The embodiments are illustrated diagrammatically in the figures, where the same reference symbols in these figures refer to the same or functionally comparable elements. In the diagram it looks like this: [Figure 1] 1A-1D are schematic diagrams illustrating embodiments of a diagnostic system, a handheld diagnostic device, and a diagnostic test element. [Diagram 2] 1 shows a flow chart of an embodiment of a diagnostic method. [Diagram 3] 1 shows a flowchart of an embodiment of a (non-integrated) wound management workflow. [Figure 4] 1 shows a flow chart of an embodiment of an integrated workflow. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0129] 1, embodiments of a diagnostic system 110, a handheld diagnostic device 112, and a diagnostic test element 114 are each shown in a schematic diagram. The diagnostic system 110 comprises at least one handheld diagnostic device 112 and at least one server device 116. The handheld diagnostic device 112 comprises at least one diagnostic measurement unit 118, at least one camera 120, and at least one control unit 122.

[0130] At least one diagnostic measurement unit 118 comprises at least one test element port 124 for determining at least one diagnostic parameter of at least one patient using at least one diagnostic test element 114. The test element port 124 may be configured to receive at least one diagnostic test element 114. The diagnostic test element 114 may also form part of the diagnostic system 110. For example, the diagnostic test element 114 may be embodied as a test strip 126. The diagnostic test element 114 may include at least one of an electrochemical test element and / or an optical test element, which may be configured to change an electrochemically and / or optically detectable property in the presence of the diagnostic parameter. Thus, the diagnostic test element 114 may be configured to detect at least one diagnostic parameter in a sample of a patient's body fluid, such as a sample of blood, interstitial fluid, urine, saliva or other type of body fluid. The handheld diagnostic device 112 may further comprise at least one display 128 and / or at least one user interface for displaying results of the diagnostic measurements to a user and for interacting with a user of the handheld diagnostic device 112 .

[0131] Furthermore, the handheld diagnostic device 112 comprises at least one camera 120 configured to capture at least one image of at least one wound 130 of the patient, for example a wound 130 located on the patient's leg 131 .

[0132] The handheld diagnostic device 112 and / or the camera 120 of the handheld diagnostic device 112 may further be configured to detect at least one identifier 133, which identifies the patient or user. The identifier may include an optical identifier, such as a barcode or a QR code, and / or an electronic identifier, such as an RFID tag and / or an NFC tag. Thus, by way of example, the identifier 133 may be included in a badge and / or a bracelet of a user, such as a medical professional, and the user may scan the identifier 133 of the badge and / or bracelet by using the handheld diagnostic device 112. Additionally or alternatively, the identifier 133 may be included in a wristband of the patient, and the user may scan the identifier 133 of the wristband by using the handheld diagnostic device 112. Other options are also feasible. The handheld diagnostic device 112 may comprise a suitable reading device configured to detect the identifier 133, such as an electronic identifier. The handheld diagnostic device 112 may also be configured to identify the patient or user by image recognition, in particular face recognition. Additionally, the handheld diagnostic device 112 may also include a biometric sensor configured to identify the patient and / or user by determining at least one biometric parameter, such as a fingerprint and / or iris of the patient or user, respectively. Thus, the camera 120 of the handheld diagnostic device 112 may also be used as a biometric sensor, where the camera 120 may be used to capture an image of the patient or user to capture certain characteristics, such as the face and / or iris, which may be further used to identify the patient or user, respectively.

[0133] The handheld diagnostic device 112 comprises at least one control unit 122 configured to control at least one diagnostic measurement and to control the taking of at least one image of the patient's wound 130. The control unit 122 may be further configured to perform at least one wound management process, which may include deriving at least one item of diagnostic information related to the patient's wound 130.

[0134] The control unit 122 is further configured to store the at least one measurement result of the diagnostic measurement and the at least one image of the wound 130 in at least one database record of the patient. The database record may include at least one identification item of the patient, such as name, date of birth, identification number, as well as at least one image of the wound 130, the at least one measurement result, and at least one diagnostic information item. The database record may be at least partially stored in the handheld diagnostic device 112, specifically in the at least one data storage device 132 of the handheld diagnostic device 112. The database record may also be at least partially stored in the at least one server device 116, specifically in the hospital information system 134. Thus, the handheld diagnostic device 112 may be configured to electronically communicate with the hospital information system 134.

[0135] Furthermore, the diagnostic system 110 may comprise at least one data interface 136 for exchanging data unidirectionally or bidirectionally with the at least one server device 116. In particular, the server device 116 may be configured to obtain at least one measurement result of a diagnostic measurement, also referred to as patient data, and / or at least one image of at least one wound 130 of the patient from the handheld diagnostic device 112. In particular, the data interface 136 may be configured to exchange data, such as patient data and / or commands, with the handheld diagnostic device 112. In particular, the patient data may include at least one of the following: images of the wound 130; measurement results of diagnostic measurements; diagnostic information items. The data interface 136 may be further configured to communicate using at least one secure data transmission.

[0136] Furthermore, at least one server device 116 of the diagnostic system may be embodied as a cloud server 138. Thus, the server device 116 may be configured to communicate with multiple handheld diagnostic devices 112. Thus, the hospital information system 134 may include multiple database records for multiple patients including patient data of the respective patients. A single patient's database record may be at least partially included in an electronic health record 140. The electronic health record 140 may be or may include an electronic medical file of the patient and thus may include patient-related information such as the patient's name, age and sex, and health information regarding current and / or past illnesses and medical treatments of the patient. Furthermore, the control unit 122 of the handheld diagnostic device 112 may be configured to assign patient data recorded by the handheld diagnostic device 112 to at least one electronic health record 140 of this patient.

[0137] The handheld diagnostic device 112 may further comprise at least one processor 142. The processor 142 may be configured, in particular by software programming, to control diagnostic measurements, control the taking of images of the wound 130, and store at least one measurement result of the diagnostic measurements and images taken by the handheld diagnostic device 112 in at least one database record for the patient. The processor 142 may also be configured, in particular by software programming, to control the wound management process and store items of diagnostic information.

[0138] The diagnostic system 110 is configured, in particular by software programming, to execute a diagnostic method, in particular for point-of-care applications. In FIG. 2, a flow chart of an exemplary embodiment of the method is shown, which is indicated by reference number 144. The diagnostic method 144 includes the use of at least one handheld diagnostic device 112. The diagnostic method 144 includes the following steps, which may be performed in a given order. Moreover, different orders may be possible. Two or more of the method steps may be performed fully or partially simultaneously. Moreover, one, more than one or all of the method steps may be performed once or repeatedly. The diagnostic method 144 may include additional method steps not described.

[0139] The diagnostic method 144 includes the following steps: i. performing at least one diagnostic measurement (indicated by reference numeral 146), the diagnostic measurement comprising using the diagnostic measurement unit 118 and the at least one diagnostic test element 114 to determine at least one diagnostic parameter of the at least one patient; ii. taking at least one image of at least one wound 130 of the patient by using the camera 120 of the handheld diagnostic device 112 (indicated by reference numeral 148); and iii. Storing the at least one measurement result of the diagnostic measurement and the at least one image in at least one database record for the patient (indicated by reference numeral 150).

[0140] As outlined above, the diagnostic method 144 includes using at least one diagnostic handheld device 112. The use of the handheld diagnostic device 112 may be controlled by a user management unit, which may be configured to restrict the use of at least some of the functions of the handheld diagnostic device 112 to at least one user group. A user group may be defined by at least one of the following: a list of users; a group of users who meet at least one predefined clearance condition. The predefined clearance condition may refer to the completion of a training course, for example, the training course may teach users how to properly handle the handheld diagnostic device 112. The use of the handheld diagnostic device 112 may be further restricted to a predefined list of users, who may be allowed to use certain functions of the handheld diagnostic device 112. If a user of the handheld diagnostic device 112 is not authorized to use the handheld diagnostic device 112, the user management unit may be configured to block the use of the handheld diagnostic device 112. The user's permission to use the handheld diagnostic device 112 may be verified prior to each method step of the diagnostic method 144, specifically prior to steps i. and ii.

[0141] Step i. of the diagnostic method 144 may include applying at least one sample of a patient's body fluid to at least one diagnostic test element 114. The diagnostic measurement may thus be an in vitro measurement. The diagnostic system 110, in particular the control unit 122 of the handheld diagnostic device 112, may be configured, in particular by executing a computer program, to prompt the user to assist in performing the diagnostic measurement. By way of example, the prompting may be performed by visually displaying instructions, for example on the display 128 of the handheld diagnostic device 112.

[0142] In step ii. of the diagnostic method 144, at least one image of the patient's wound 130 is captured. The control unit 122 may also be configured to prompt a user to assist in the capture of the at least one image of the patient's wound 130, in particular by executing a computer program. The image, in which the patient's wound 130 may be at least partially visible, may be used for a wound management process. The wound management process may include deriving at least one diagnostic information item regarding the patient's wound 130. The wound management process may provide tools for automatic inspection of the wound 130, such as at least one measurement tool, at least one image recognition tool, at least one display tool, at least one download function and / or at least one graphic tool. The at least one diagnostic information item derived from the wound management process may form part of the patient data and may therefore be stored in the patient's electronic health record. Furthermore, steps i. and ii. may be performed for one and the same patient within a period of 15 minutes or less.

[0143] Furthermore, the diagnostic method 144 may be at least partially computer-implemented, specifically step iii. of the diagnostic method 144. The control unit 122 of the handheld diagnostic device 112 may be configured to execute a computer program that may cause the control unit 122 to store at least one measurement result of the diagnostic measurement and at least one image in at least one database record of the patient. As outlined above, for method steps that are not computer-implemented, the control unit 122 may be configured to prompt a user to assist in the execution of steps i. and ii. Furthermore, the server device 116 may be configured, in particular by software programming, to obtain patient data, such as measurement results of the diagnostic measurement and at least one image of the wound 130 of at least one patient, from the handheld diagnostic device 112. In particular, the patient data may be obtained by the server device 116 from the data storage device 132 of the handheld diagnostic device 112.

[0144] 3 illustrates a flow chart of an exemplary embodiment of a wound management workflow 152. The wound management workflow 152 may include using at least one handheld diagnostic device 112. In particular, the wound management workflow 152 may be performed by using a software application executing on at least one handheld diagnostic device 152. The software application may guide a user of the handheld diagnostic device 112 through the wound management workflow 152. For example, the software application may be configured to prompt a user of the handheld diagnostic device 112 to perform the wound management workflow 152. To initiate the wound management workflow 152, a user may have to select an appropriate function 154 of the handheld diagnostic device 112, for example, by initiating a software application configured to perform the wound management (WM) workflow 152 via a user interface of the handheld diagnostic device 112. In a first step of the wound management workflow 152, the handheld diagnostic device 112 may perform a user login 156. Specifically, the handheld diagnostic device 112 may identify the user, for example, by reading the user's at least one identifier 133 and / or by using image recognition, such as facial recognition. Furthermore, if the user can be identified by the handheld diagnostic device 112, the handheld diagnostic device may verify the user's authorization to use certain functions of the handheld diagnostic device 112. In a further step of the wound management workflow, a patient may be identified (158) by the handheld diagnostic device 112. For example, the handheld diagnostic device 112 may identify the patient by reading the patient's at least one identifier 133 (158). The user may assist the handheld diagnostic device 112 in reading the patient's identifier 133, such as by scanning a badge, a bracelet and / or a wristband that includes the patient's at least one identifier 133. Furthermore, the wound management workflow 152 may include a wound management process 160. The wound management process 160 may include taking at least one image of the patient's at least one wound 130.Thus, a software application executing on the handheld diagnostic device 112 may prompt the user to identify the patient's wounds 130 and take at least one image for each of the patient's wounds 130. When the user has completed the wound management process 160, the wound management workflow 152 may be terminated by logging the user 162 out of the handheld diagnostic device 112.

[0145] In FIG. 4, a flow chart of an exemplary embodiment of an integrated workflow 164 is shown. For example, the wound management workflow 152 may be integrated with the execution of at least one diagnostic measurement 146. Similar to the wound management workflow 152 described in detail above, the integrated workflow 164 may include the use of at least one handheld diagnostic device 112. Furthermore, the integrated workflow 164 may also be executed by using a software application executed on the handheld diagnostic device 112. The first three steps of the integrated workflow may be similar to the wound management workflow 152, so reference is made to the description of FIG. 3. The steps may launch a software application configured to execute the integrated workflow 164 by selecting the appropriate function (154), logging in a user (156), and identifying a patient (158). A further step of the integrated workflow may include executing at least one diagnostic measurement 146. This step may be similar to method step i), so reference is made to the description of the diagnostic method 144 shown in FIG. 2. In a further step of the integrated workflow 164, the software application may be configured to query (166) whether a wound management process 160 is scheduled for the respective patient. The software application may query the patient's electronic health record 140. Additionally or alternatively, the software application may query the user of the handheld diagnostic device 112 whether a wound management process 160 is scheduled. In one embodiment, the wound management process may be performed at specific intervals, for example once a day. If the wound management process 160 is scheduled, the software application may be configured for at least one of prompting the user of the handheld diagnostic device 112 to perform the wound management process 160; and obtaining patient and user data from diagnostic measurements to initiate the wound management process 160. Additionally, the integrated workflow 164 may include exchanging record data 168, such as diagnostic measurement results and at least one image of the patient's wound 130, with the at least one server device 116. [Explanation of symbols]

[0146] 110 Diagnostic Systems 112 Handheld Diagnostic Devices 114 Diagnostic Test Elements 116 Server equipment 118 Diagnostic Measurement Unit 120 Camera 122 Control Unit 124 Test Element Port 126 Test Strips 128 Display 130 Wound 131 Patient's Foot 132 Data storage device for handheld diagnostic devices 133 Identifier 134 Hospital Information Systems 136 Data Interface 138 Cloud Server 140 Electronic Medical Records 142 processors 144 Diagnostic methods 146 Perform at least one diagnostic measurement (step i.) 148 Taking at least one image (step ii.) 150 storing at least one measurement result of the diagnostic measurement and at least one image (step iii.) 152 Wound Management Workflow 154 Selecting the Features of a Handheld Diagnostic Device 156 User Login 158 Identifying the Patient 160 Wound Management Process 162 User logout 164 Integrated Workflow 166 Enquire if wound management is planned 168 Exchanging Data

Claims

1. A handheld diagnostic device (112), comprising: a. at least one diagnostic measurement unit (118) configured to perform at least one diagnostic measurement, said diagnostic measurement unit (118) comprising at least one test element port (124) for determining at least one diagnostic parameter of at least one patient by using at least one diagnostic test element (114); b. at least one camera (120) configured to capture at least one image of at least one wound (130) of the patient; c. at least one control unit (122), configured to control the diagnostic measurements and to control the capturing of the image of the wound (130), the control unit (122) further configured to store at least one measurement result of the diagnostic measurements and the at least one image in at least one database record for the patient; Equipped with The handheld diagnostic device (112), wherein the control unit (122) is further configured to execute at least one wound management process (160), the wound management process (160) including deriving at least one item of diagnostic information relating to the at least one wound (130) of the patient that is at least partially visible in the image.

2. the database record includes at least one item of identification information identifying the patient, the at least one image, and the at least one measurement result; The handheld diagnostic device (112) of claim 1.

3. the database records are stored at least in part on at least one server device (116); the handheld diagnostic device (112) is configured to electronically communicate with the server device (116); A handheld diagnostic device (112) according to any one of claims 1 to 2.

4. the database record of the patient is constituted at least in part by an electronic health record (140) stored in a hospital information system (134); the control unit (122) is configured to assign the measurements and the images to at least one patient's electronic health record (140); A handheld diagnostic device (112) according to any one of claims 1 to 3.

5. the diagnostic parameters include at least one parameter selected from the group consisting of a glucose concentration in at least one body fluid of the patient, a coagulation parameter of the patient, a ketone concentration in at least one body fluid of the patient, and a lactate concentration in at least one body fluid of the patient. A handheld diagnostic device (112) according to any one of claims 1 to 4.

6. the handheld diagnostic device (112) is further configured to identify at least one of the patient or a user of the handheld diagnostic device (112); A handheld diagnostic device (112) according to any one of claims 1 to 5.

7. The wound management process (160) - displaying said image of said wound (130) on a display (128) of said handheld diagnostic device (112); - providing at least one measurement tool to a user, said measurement tool being configured to derive said at least one item of diagnostic information from said image; - providing at least one image recognition tool configured to automatically derive said at least one diagnostic information item from said image; - providing at least one display tool for displaying at least one previous image of said wound (130); - providing a download functionality for downloading patient information from at least one server device (116) to said handheld diagnostic device (112); - providing at least one graphic tool for displaying at least one time course of at least one diagnostic parameter related to said wound (130); - providing at least one method of escalation of said diagnostic information items to medical professionals; At least one of: A handheld diagnostic device (112) according to any one of claims 1 to 6.

8. Further comprising at least one user management unit; the user management unit is configured to restrict use of at least some of the features of the handheld diagnostic device (112) to at least one user group; and / or the user management unit is configured to block use of the handheld diagnostic device (112) if the user of the handheld diagnostic device (112) is not authenticated as a user with permission to use the handheld diagnostic device (112); A handheld diagnostic device (112) according to claim 6 or 7.

9. the handheld diagnostic device (112) is configured for point-of-care use; the point-of-care application is in a specialized medical facility; The point-of-care application is performed by a professional health care provider at or near the patient. A handheld diagnostic device (112) according to any one of claims 1 to 8.

10. the diagnostic test element (114) comprises at least one test strip (126); the test element port (124) comprises at least one test strip port; A handheld diagnostic device (112) according to any one of claims 1 to 9.

11. Further comprising at least one user management unit; the user management unit is configured to restrict use of at least some of the functions of the handheld diagnostic device (112) to at least one user group; A handheld diagnostic device (112) according to any one of claims 1 to 10.

12. A diagnostic system (110), comprising: A. At least one handheld diagnostic device (112) according to any one of claims 1 to 11; B. at least one server device (116), configured to obtain at least one measurement result of the diagnostic measurement and / or the at least one image of the at least one wound (130) for the patient from the handheld diagnostic device (112); A diagnostic system (110).

13. A diagnostic method comprising using at least one handheld diagnostic device (112) according to any one of claims 1 to 11, the method comprising: i. performing at least one diagnostic measurement, said diagnostic measurement comprising using said diagnostic measurement unit (118) and at least one diagnostic test element (114) for determining at least one diagnostic parameter of at least one patient; ii. taking at least one image of at least one wound (130) of the patient by using the camera (120) of the handheld diagnostic device (112); iii. storing said at least one measurement result of said diagnostic measurement and said at least one image in at least one database record for the patient; A diagnostic method comprising:

14. A computer program, when executed by the control unit (122) of a handheld diagnostic device (112) according to any one of claims 1 to 11, for a handheld diagnostic device (112), causing the control unit (122) to: - prompting a user to perform a diagnostic measurement by using said diagnostic measurement unit (118) and said diagnostic test element (114); - prompting the user to take at least one image of the at least one wound (130) of the patient by using the camera (120); - storing at least one measurement result of said diagnostic measurement and said at least one image in said at least one database record for said patient; A computer program comprising instructions to perform the following:

15. 1. A computer-readable storage medium, comprising: When executed by the control unit (122) of a handheld diagnostic device (112) according to any one of claims 1 to 11, the control unit (122) is caused to - prompting a user to perform a diagnostic measurement by using said diagnostic measurement unit (118) and said diagnostic test element (114); - prompting the user to take at least one image of the at least one wound (130) of the patient by using the camera (120); - storing at least one measurement result of said diagnostic measurement and said at least one image in said at least one database record for said patient; A computer-readable storage medium comprising instructions to cause a

16. A computer program comprising: When the program is executed by a diagnostic system (110) according to claim 12, obtaining patient data from the handheld diagnostic device (112) to the server device (116) of the diagnostic system (110); The patient data is generated by a diagnostic method according to claim 13, the patient data includes the at least one measurement result of the diagnostic measurement and the at least one image of the at least one wound (130) of the patient; Let them acquire and causing the server device (116) of the diagnostic system (110) to store the patient data in at least one database record for the patient. A computer program containing instructions.

17. 1. A computer-readable storage medium, comprising: When executed by the diagnostic system (110) according to claim 12, the diagnostic system (110) obtaining patient data from the handheld diagnostic device (112) to the server device (116) of the diagnostic system (110); The patient data is generated by a diagnostic method according to claim 13, the patient data includes the at least one measurement result of the diagnostic measurement and the at least one image of the at least one wound (130) of the patient; Let them acquire and causing the server device (116) of the diagnostic system (110) to store the patient data in at least one database record for the patient. A computer-readable storage medium containing instructions.

Images