Abstract:
The present invention relates to a field of drug injection, and discloses a drug information detection device and a drug information detection type injection device. The drug information detection device is configured to detect an injected dose of an injection pen containing drug. The drug information detection device includes a housing, a rotary encoder configured to convert rotational information of the adjusting knob into drug injected dose information, and a control assembly. The rotary encoder includes an encoder body and a rotary block rotatably connected to the encoder body. The encoder body and the control assembly are electrically connected to each other. The housing is configured to cover the encoder body and the control assembly.

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     Various embodiments disclosed herein generally relate to a field of drug injection, and more particularly, to a drug information detection device and a drug information detection type injection device. 
     Description of Related Art 
     In the prior art, an injection pen (such as an insulin injection pen) is provided for allowing a patient to select a dose and perform self-injection, such that the patient with chronic disease can perform self-treatment at home. 
     Generally, the injection pen comprises an injection part and a detection part configured to determine a dose. The injection part comprises a barrel configured to contain drugs, and a plunger. The detection part comprises a sleeve and an adjusting knob, wherein the sleeve is fixed to the barrel and has graduation marks. The adjusting knob is rotatably connected to one end of the sleeve through a screw thread. The plunger passes through the sleeve and is connected to the adjusting knob. Before injection, the adjusting knob is rotated to drive the plunger to move until the adjusting knob reaches a predetermined graduation mark on the sleeve. As such, the movement of the plunger is determined, and a proper drug dose is selected. Thereafter, the adjusting knob is pushed to drive the plunger to move down, so as to push the drug out of the barrel for completing injection. 
     The injection pen of the prior art can select drug dose, but information of injection time, amounts of injected doses, number of injections cannot be recorded by the injection pen of the prior art. The above information is very important to the patient for treatment. It is a very important diagnosis reference to a doctor. Without recording related information, the patient may forget the injection time and the number of injections, so as to inject too many or too few times, thus disease gets worse. 
     In order to record the drug injection information of the injection pen, the prior art utilizes a detection device matched with or integrated to the injection pen. The detection device mostly uses a sensor or optical recognition to detect the moving distance of the plunger, and convert a detection result into an electronic data. Since a computation result is directly affected by detection of the moving distance of the plunger. The detection device requires higher accuracy for installation, needs to perform complex operations during detection, and may easily cause detection error, such that the detection device of the prior art cannot meet user&#39;s recording requirement. 
     SUMMARY OF THE INVENTION 
     The present invention provides a drug information detection device in order to solve problems of the prior art, where a detection device of the prior art requires higher accuracy for installation, needs to perform complex operations during detection, and may easily cause detection error. 
     The drug information detection device of the present invention is configured to detect an injected dose of an injection pen containing drug. An adjusting knob is arranged at one end of the injection pen for determining the injected dose. The drug information detection device comprises a housing, a rotary encoder configured to convert rotation information of the adjusting knob into drug injected dose information, and a control assembly. The rotary encoder comprises an encoder body and a rotary block rotatably connected to the encoder body. The encoder body and the control assembly are electrically connected to each other and are fixed to the adjusting knob. The housing is configured to cover the encoder body and the control assembly. A button is arranged at a first end of the housing. The rotary block is fixedly connected to the button. 
     Further, the control assembly comprises a wireless transmission module configured to transmit information wirelessly. 
     Further, the encoder and the control assembly are fixed in the housing. A second end of the housing is fixed to the adjusting knob. The button is rotatably connected to the first end of the housing. 
     Further, a retaining ring is arranged at the first end of the housing. A first end of the button passes through the retaining ring. A limit ring is arranged at an outer edge of a second end of the button for engaging with the retaining ring. 
     In contrast to the prior art, the drug information detection device of the present invention is directly installed on the adjusting knob of the injection pen. When performing injection, a user pushes the button to press down the drug information detection device. A pressing force is transmitted to the adjusting knob. The adjusting knob converts the pressing force into a rotating force, and then rotates and descends in order to drive the encoder body to rotate. Since the rotary block is connected to button, the rotary block does not rotate when the button is continuously pushed. Therefore, the rotary block can stay still during injection, and the encoder body rotates relative to the rotary block. The encoder body detects a rotation amount of the encoder body relative to the rotary block, which is equal to a rotation amount of the adjusting knob. The rotation amount is converted into injected dose information and stored in the control assembly. Accordingly, a drug information detection process is completed. When the drug information detection device of the present invention performs detection to the injection pen, no additional detection operation is required and the drug information detection device is easy to operate. During installation, an internal structure of the drug information detection device needs only to be arranged for rotating simultaneously with the adjusting knob. Therefore, the drug information detection of the present invention requires lower accuracy for installation, and has less detection error. 
     The present invention further provides a drug information detection type injection device. The drug information detection type injection device comprises an injection pen having one end arranged with an adjusting knob and the aforementioned drug information detection device. The encoder body and the control assembly of the drug information detection device are fixed to the adjusting knob. 
     Further, a connection sleeve is arranged at one end of the adjusting knob. The second end of the housing is fixed to the connection sleeve through a screw thread. An accommodating chamber is formed inside the connection sleeve and the housing. The rotary encoder and the control assembly are arranged in the accommodating chamber. 
     Further, a battery is arranged in the accommodating chamber for providing power. 
     Further, a vibrator is arranged in the accommodating chamber and is controlled by the control assembly. 
     Further, a ring-shaped indicating lamp is arranged outside the connection sleeve and is controlled by the control assembly. 
     The drug information detection type injection device of the present invention integrates the aforementioned drug information detection device and the injection pen, for providing functions of injecting drug and detecting drug information. Operations of the drug information detection type injection device of the present invention is identical to those of an injection pen of the prior art. Therefore, no additional detection operation is required. During injection, drug information can be simultaneously collected, and the operation for collecting data is easy and has less error. 
     These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
     The foregoing objects and advantages of the invention are illustrative of those that can be achieved by the various exemplary embodiments and are not intended to be exhaustive or limiting of the possible advantages which can be realized. Thus, these and other objects and advantages of the various exemplary embodiments will be apparent from the description herein or can be learned from practicing the various exemplary embodiments, both as embodied herein or as modified in view of any variation that may be apparent to those skilled in the art. Accordingly, the present invention resides in the novel methods, arrangements, combinations, and improvements herein shown and described in various exemplary embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying figures, where like reference numerals refer to identical or functionally similar elements throughout the separate views, together with the detailed description below, are incorporated in and form part of the specification, and serve to further illustrate embodiments of concepts that include the claimed invention, and explain various principles and advantages of those embodiments. 
       These and other more detailed and specific features of the present invention are more fully disclosed in the following specification, reference being had to the accompanying drawings, in which: 
         FIG. 1  is an exploded view of a drug information detection type injection device of the present invention. 
         FIG. 2  is an exploded view of a drug information detection device and an adjusting knob of the present invention. 
         FIG. 3  is a diagram showing a rotary encoder. 
     
    
    
     The apparatus components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     As shown in  FIG. 1  and  FIG. 2 , a drug information detection device  11  comprises a housing  112 , a rotary encoder  113  and a control assembly  114 . Wherein, the housing  112  is cylindrical and covers the rotary encoder  113  and the control assembly  114 . A button  111  is arranged at outside of a first end of the housing  112 . 
     As shown in  FIG. 2  and  FIG. 3 , the rotary encoder  113  comprises an encoder body  1132  and a rotary block  1131  rotatably connected to the encoder body  1132 . The rotary block  1131  is connected to the button  111 . The encoder body  1132  and the control assembly  114  are electrically connected to each other, and fixed to an adjusting knob  121  of a injection pen  12  to rotate with the adjusting knob  121 . When a user pushes the button  111 , a force is transmitted from the button  111  to the rotary encoder  113  and further transmitted to the adjusting knob  121 . When the adjusting knob  121  is pressed, the adjusting knob  121  rotates and moves downward in order to drive the encoder body  1132  to rotate simultaneously. Processes of the entire movement comprises the following steps: the user applying a force to the button  111 ; the button  111  driving the adjusting knob  121  to move downward together; the adjusting knob  121  driving the drug information detection device  11  to move downward with the encoder body  1132  rotating with the adjusting knob  121 ; and the adjusting knob  121  returning to an original limit position for completing the injection. 
     When using the drug information detection device  11  of the present invention, the drug information detection device  11  is first installed to the injection pen  12  to ensure that the encoder body  1132  and the control assembly  114  are fixed to the adjusting knob  121 . When the user uses the injection pen  12  for injection, the user rotates the adjusting knob  121  to a required graduation mark and then pushes the button  111 . Through the aforementioned force transmission processes, the adjusting knob  121  rotates and moves downward in order to drive a plunger of the injection pen  12  to move downward for completing the injection. 
     During the injection, the user continues pushing the button  111 . The button  111  contacted with a finger of the user does not rotate, and the rotary block  1131  fixed to the button  111  does not rotate either. When the adjusting knob  121  is pressed to rotate and move downward for injection, the encoder body  1132  is simultaneously driven to rotate relative to the rotary block  1131 . A rotation amount of the encoder body  1132  is equal to a rotation amount of the adjusting knob  121 . The encoder body  1132  detects the relative rotation amount between the encoder body  1132  and the rotary block  1131 , and converts the relative rotation amount into electronic data. The electronic data is further converted into drug dose data by the control assembly  114  to be recorded. The control assembly  114  simultaneously records the injection time. 
     Therefore, the drug information detection device  11  according to the present embodiment detects and stores the drug injected dose by using the rotary encoder  113  to detect the rotation amount of the adjusting knob  121 . No sensor is required to detect a movement of the plunger, such that accuracy required for installation is lower. The user only needs to follow original operations of the injection pen  12  to rotate and push, no additional specific detection operation is required. The drug information detection device  11  converts the detected rotation amount into the drug injected dose, thus detection error is not easily occurred. The drug information detection device  11  has higher detection accuracy. 
     The control assembly  114  of the drug information detection device  11  of the present invention further comprises a wireless transmission module. The drug information (such as injected dose, injection time, etc.) stored in the control assembly can be transmitted to an external data processing device (such as a tablet computer, a mobile phone, a calculator, a router, etc.) through the wireless transmission module. In practical use, the wireless transmission module can be a Bluetooth module to communicate with a mobile terminal, such as a mobile phone or a tablet computer, for transmitting data periodically or in real time. The drug information can be recorded in the mobile terminal to be shown as diagrams or curves, so to intuitively remind a patient of drug usage. The wireless transmission module can also be a WIFI module to connect to Internet through a router, and directly transmit the drug information to a computer of a doctor at a remote site. Therefore, the doctor can remotely monitor the drug usage of the patient for a diagnosis basis. 
     The control assembly  114  of the drug information detection device  11  of the present invention further comprises a predetermined dose switching module, which is configured to switch data collection modes of the control assembly  114 . After using the predetermined dose switching module, the control assembly  114  can record the drug injected dose of the injection pen and record the injection time as well. 
     There are different ways to fix the encoder body  1132  and the control assembly  114  to the adjusting knob  121 . For example, for directly fixing the encoder body  1132  and the control assembly  114  to the adjusting knob  121 , a fixing rack can be arranged for fixing the encoder body  1132  and the control assembly  114  to the fixing rack. A clamping structure can be arranged on the fixing rack for clamping the adjusting knob  121 . When the adjusting knob  121  rotates, only the fixing rack, the encoder body  1132  and the control assembly  114  rotate with the adjusting knob  121 , and the housing  112  stays still. In addition, for indirectly fixing the encoder body  1132  and the control assembly  114  to the adjusting knob  121 , the encoder body  1132  and the control assembly  114  can be fixed in the housing  112 , wherein the housing  112  is fixed to the adjusting knob  121 . When the adjusting knob  121  rotates, the housing  112 , the encoder body  1132  and the control assembly  114  rotate synchronously. As shown in  FIG. 1  and  FIG. 2 , the embodiment uses the indirect way. The encoder body  1132  and the control assembly  114  are fixed in the housing. A second end of the housing  112  is fixed to the adjusting knob  121  to rotate with the adjusting knob  121 . The button  111  is rotatably connected to the first end of the housing  112 . When the button  111  is pushed for injection, the adjusting knob  121  drives the housing  112  to rotate. Since the button  111  is rotatably connected to the housing  112 , the button  111  stays still and does not rotate with the adjusting knob  121 . In the way of fixing the housing  112  to the adjusting knob  121 , the housing  112  is integrated with the encoder body  1132  and the control assembly  114  in order to provide protection for components in the housing  112 . 
     There are different ways to fix the housing  112  to the adjusting knob  121 . For example, an adhesive structure can be arranged at an edge of the housing  112 , such that the housing  112  can be adhered and fixed to the adjusting knob  121  when installing the drug information detection device  11 . Or a plurality of screwing bolts can be arranged to surround an upper ring of the housing  112 , such that when the housing  112  is sleeved on the adjusting knobs  121 , the housing  112  can be screwed with the screwing bolts for fixing to the adjusting knob  121  during the installation. Other structures can be also used to fix the housing  112  to the adjusting knob  121 , therefore, no further illustration is provided. The housing  112  can be fixed to the adjusting knob  121  for rotating synchronously in a simple and easy way. 
     There are different ways to rotatably connect the housing  112  and the button  111 . In the present embodiment, a retaining ring  1121  is arranged at the first end of the housing  112 . A first end of the button  111  passes through the retaining ring  1121 , and a second end of the button  111  is arranged with a limit ring  1111  for engaging with the retaining ring  1121  in order to prevent the button  111  from detaching from the housing  112 . When using the drug information detection device  11 , the user pushes the button  111  and the button  111  moves downward to detach the limit ring  1111  from the retaining ring  1121 . No friction is generated between the housing  112  and the button  111  while the housing  112  is driven to rotate by the adjusting knob  121 . Therefore, the rotation is smoother. Moreover, the problem of the accuracy of the encoder body  1132  collecting relative rotation amount data being affected by an axial rotation of the rotary block  1131  due to rotation of the button  111  can be prevented. In practical use, other rotatable connection methods can be also used, such as using a rotary bearing to connect the housing  112  and the button  111 . 
     The drug information detection device  11  according to the present embodiment can be installed on all kinds of injection pens  12  in the market. The drug information detection device  11  can be used to cooperate with the injection pen  12 , for detecting drug injection information of the injection pen  12  and transmitting the drug injection information to the external device without additional operations. Therefore, the drug information detection device  11  provides convenience to users and doctors and has advantages of easy installation and operation, and high detection accuracy. 
     As shown in  FIG. 1 , the present embodiment further provides a drug information detection type injection device  1  which is formed by integrating the injection pen  12  with the drug information detection device  11 . The adjusting knob  121  of the injection pen  12  is fixed to the encoder body  112  and the control assembly  114 . 
     The drug information detection type injection device  1  of the present embodiment follows the same operations of the injection pen  12  in the market, such as rotating and pushing to complete the entire process of dose selection, injection, and drug information detection. The drug information detection type injection device  1  not only can adjust and select a dose for drug injection but also can automatically detect and store the drug injected dose information and the injection time, in order to provide an important diagnosis basis to the users and the doctors. 
     As shown in  FIG. 1 , a connection sleeve  1211  is arranged at one end of the adjusting knob  121 . An outer side of the connection sleeve  1211  is arranged with a screw thread. The second end of the housing  112  is fixed to the connection sleeve  1211  through the screw thread. That is, the adjusting knob  121  and the housing  112  are fixed to each other through the connection sleeve  1211 . An accommodating chamber is formed inside the connection sleeve  1211  and the housing  112 . The rotary encoder  113  and the control assembly  114  are arranged in the accommodating chamber and fixed to the connection sleeve  1211  or the housing  112 , such that the encoder body  1132  and the control assembly  114  can be driven to synchronously rotate with the adjusting knob  121 . 
     Other circuit structures are arranged in the accommodating chamber. As shown in  FIG. 2 , the circuit structures include a battery (not shown in the figure) and a vibrator  1141 . The battery is configured to provide power to the entire drug information detection device  11 . The vibrator  1141  is controlled by the control assembly  114  and configured to vibrate at designated time or in a certain condition to remind the user. For example, scheduled injection time can be set in the vibrator  1141 , such that the vibrator  1141  can vibrate for reminding the user. 
     In order to enhance the reminding function, a ring-shaped indicating lamp (not shown in the figure) can be arranged outside the connection sleeve  1211 . The ring-shaped indicating lamp is controlled by the control assembly  114  and configured to blink at designated time or in a certain condition in order to cooperate with the vibrator  1141  for visually reminding the user. For example, the ring-shaped indicating lamp continues lighting during the injection, and turns to a blinking state when the injection is about to complete. The ring-shaped indicating lamp can display electricity capacity, an information transmission status, a wireless connection status, a drug information collection mode, etc. through different colors or frequencies of light, so as to work in different statuses according to requirements. 
     Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. 
     Accordingly, it is to be understood that the above description is intended to be illustrative and not restrictive. Many embodiments and applications other than the examples provided would be apparent upon reading the above description. The scope should be determined, not with reference to the above description or Abstract below, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. It is anticipated and intended that future developments will occur in the technologies discussed herein, and that the disclosed systems and methods will be incorporated into such future embodiments. In sum, it should be understood that the application is capable of modification and variation. 
     The benefits, advantages, solutions to problems, and any element(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential features or elements of any or all the claims. The invention is defined solely by the appended claims including any amendments made during the pendency of this application and all equivalents of those claims as issued. 
     All terms used in the claims are intended to be given their broadest reasonable constructions and their ordinary meanings as understood by those knowledgeable in the technologies described herein unless an explicit indication to the contrary in made herein. In particular, use of the singular articles such as “a,” “the,” “said,” etc. should be read to recite one or more of the indicated elements unless a claim recites an explicit limitation to the contrary. 
     The Abstract of the Disclosure is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, it can be seen that various features are grouped together in various embodiments for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter.