Supplemental device for attachment to an injection device
An injection device and an attachment technology, applied in the direction of transmitting sensing components, measuring devices, hypodermic injection devices, etc. using optical devices, can solve the problems of increasing the cost of pre-filled disposable injection devices
Active Publication Date: 2016-02-10
SANOFI AVENTIS DEUT GMBH
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- Claims
- Application Information
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Problems solved by technology
[0003] Thus, the control circuit of the medical device described in WO2009 / 024562 can be used with a series of prefilled disposable injection devices, but the requirement is that the RFID unit is housed in the medicament container of the prefilled disposable injection device together with the value sensor, which Significantly increases the cost of prefilled single-use injection devices
Method used
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Embodiment Construction
[0041] Hereinafter, embodiments of the present invention will be described with reference to an insulin injection device. However, the present invention is not limited to this application and may also be arranged with injection devices or other types of medical devices for injecting other medicaments.
[0042] Figure 1 is an exploded view of an injection device 1, which may for example represent Sanofi's Solostar(R) insulin injection pen.
[0043] The injection device 1 of Figure 1 is a prefilled, single-use injection pen comprising a housing 10 and housing an insulin container 14 to which a needle 15 can be attached. The needle is protected by an inner needle cover 16 and an outer needle cover 17 which in turn may be covered by a cover 18 . The dose of insulin to be expelled from the injection device 1 can be selected by turning the dose knob 12, and the selected dose is then displayed via the dose window 13, for example, in multiples of so-called International Units (IU), w...
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The invention provides a supplemental device for attachment to an injection device, the supplemental device comprising: an electromechanical switch arrangement (110) having an open state and a closed state, the electromechanical switch arrangement (110) comprising a protrusion (118) configured to contact a surface (116, 117) of the injection device when a dose of zero units is dialled into the injection device, wherein the state of the switch arrangement (110) is configured to change when a dose dialled into the attached injection device is decreased from one unit to zero units; and a processor arrangement configured to: detect one or more changes in the state of the electromechanical switch arrangement (110); and determine from the one or more state changes that a dose of zero units is dialled into the injection device.
Description
technical field [0001] The invention relates to a supplementary device for attachment to an injection device. Background technique [0002] There are various diseases that require regular treatment by injecting medicaments. Such injections can be performed using an injection device administered by medical personnel or by the patient himself. As one example, type 1 and type 2 diabetes can be treated by the patient himself by injecting insulin (eg, once or several times a day). For example, prefilled disposable insulin pens can be used as injection devices. Alternatively, reusable pens can be used. The reusable pen allows replacement of an empty medicament cartridge with a new medicament cartridge. The pen can be supplied with a set of one-way needles which are replaced before each use. The insulin dose to be injected can then be manually selected at the insulin pen, for example, by turning the dose knob and viewing the actual dose from the insulin pen's dose window or di...
Claims
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IPC IPC(8): A61M5/315
CPCA61M2205/3327A61M2205/505A61M5/3155G16H40/63G16H20/17G01D5/26G01F22/00
Inventor R·维齐D·A·普伦特里P·R·德拉珀D·R·默瑟
Owner SANOFI AVENTIS DEUT GMBH