This application claims priority to, and the benefit of, Chinese Patent Application No. 202110028945.4, entitled “ANALYTE METERS, TEST STRIP EJECTORS, AND METHODS OF USING SAME” filed Jan. 11, 2021, the disclosure of which is hereby incorporated by reference in its entirety for all purposes.
The present disclosure relates to test strip ejectors of analyte meters used to eject a test strip after use, analyte meters, and methods using such test strip ejectors.
The monitoring of analyte concentration levels in a bio-fluid (e.g., blood) may be used as part of health diagnostics. For example, an analyte test strip (e.g., glucose test strip) may be employed with an analyte meter for monitoring a patient's blood glucose level as part of diabetes care and treatment. The analyte meter may receive the test strip in a test strip port of the analyte meter, and make contact with an electrical circuit of the analyte meter for detecting an analyte concentration level in a bio-fluid sample, such as from a single drop of blood. For example, a blood sample may be obtained from the patient using a lancet (e.g., by a pinprick). Typically, after the blood sample has been obtained, the sample may then be transferred to test strip for measurement of the blood's analyte concentration level (e.g., a glucose concentration level).
After the analyte (e.g., glucose) reading is complete, the test strip is removed from the test strip port of the analyte meter, to ready the analyte meter to receive another test strip for the next analyte measurement.
In a first aspect, an analyte meter is provided. The analyte meter includes a housing body including a front side, a back side, a first side, a second side, an end, and a test strip port at the end configured to receive a test strip therein, and a test strip ejector configured to eject the test strip from the test strip port, the test strip ejector further comprising: a slide member slidable relative to the housing body, an engagement member coupled to the slide member and configured to be contacted by a user, the engagement member located on the back side of the housing body, and a push member coupled to the slide member and positioned to be engageable with the end of the test strip.
In yet another aspect, a test strip ejector of an analyte meter is provided. The test strip ejector includes a housing body, an engagement member configured to be contacted by a user's digit, the engagement member located on a back side of a housing body, a slide member coupled to the engagement member and slidable thereby, a test strip receiver configured to receive a test strip in a test strip port thereof, and a push member coupled to the slide member, the push member moveable in the test strip receiver and configured to contact an end of the test strip, wherein sliding motion of the engagement member along the back side, causes the test strip to be ejected from the test strip port.
In a method aspect, a method of ejecting a test strip from an analyte meter is provided. The method includes providing an housing body having a test strip ejector integrated therein, the test strip ejector comprising: an engagement member located on a back side of the housing body, a slide member coupled to the engagement member and configured to be slidable therewith, a test strip receiver configured to receive the test strip in a test strip thereof, and a push member coupled to the slide member, the push member moveable in the test strip receiver; and with a user's digit, causing a sliding motion of the engagement member along the back side to cause the push member to contact an end of the test strip and eject the test strip from the test strip port.
Other features and aspects of the present disclosure will become more fully apparent from the following detailed description, the accompanying drawings, and the claims.
The drawings, described below, are for illustrative purposes and are not necessarily drawn to scale. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature, and not as restrictive. The drawings are not intended to limit the scope of the disclosure in any way.
Removal of the test strip from the test strip port can expose the user's digits (e.g., fingers and/or thumb) or others to blood remaining on the test strip after use, which may cross contaminate, is messy, and may enable transfer of blood to other items such as skin, clothing, furniture, etc.
In view of these concerns, embodiments of present disclosure provide an analyte meter that includes a strip ejector that is configured to allow a user to readily and effectively eject a used and contaminated test strip from the test strip port. Ejection of the test strip can be accomplished with one hand, which can have significant value in a clinical setting, for example.
In a first one-handed example, ejection of the test strip can be accomplished in a first way with a single digit (e.g., index finger), while holding the analyte meter between the thumb and one or more of the other fingers, and without having to touch the test strip. In other embodiments, a 2nd way to eject the test strip can be accomplished by using the thumb to push a first side or a second side of an engagement member of the test strip ejector apparatus. In a 3rd way, the index and/or middle finger is used to push the first side or second side of an engagement member.
The test strip ejector includes an engagement member that is positioned on a back side of the housing body of the analyte meter opposite from the front side containing the display screen. In particular, the engagement member is configured to be engaged by the user's digit (e.g., finger) while holding the analyte meter. Sliding the engagement member engages and sides a sliding member and causes a push member to contact an end of the test strip and upon further motion of the engagement member, eject the test strip from the test strip port. The push member is received inside and is moveable within a test strip receiver. The test strip receiver is configured to receive the test strip and includes electrical contacts (e.g., conductive leaf springs or the like) formed therein that are configured to electrically connect to electrical contacts formed on the test strip.
The analyte meter in accordance with embodiments of the present disclosure may be used to measure any number of analytes, such as glucose, fructose, lactate, keytone, microalbumin, bilirubin, total cholesterol, uric acid, lipids, triglyceride, high density lipoprotein (HDL), low density lipoprotein (LDL), hemoglobin A1c, and the like. These analytes may be detected in, for example, whole blood, blood serum, blood plasma, interstitial fluid, urine, etc. Other types of analytes may be measured provided a suitable reagent exists.
These and other embodiments of analyte meters, test strip ejectors, and methods of ejecting a test strip from an analyte meter are described below with reference to
The housing body 102 may have a front side 104A, a back side 104B opposite the front side 104A, a first side 104C, and a second side 104D opposite the first side 102C, and an end 106. The end 106 can include, as shown, a test strip port 110 that can include a receptacle that is configured to receive the test strip 112 therein. The receptacle can include electrical contacts 121 that are configured to engage with contact pads 112P located on the test strip 112.
An example of a test strip 112 (sensor) is shown in
One group of catalytic agents useful for providing the reaction region 112R may be the class of oxidase enzymes which includes, for example, glucose oxidase (which converts glucose), lactate oxidase (which converts lactate), and D-aspartate oxidase (which converts D-aspartate and D-glutamate). In embodiments in which glucose is the analyte of interest, glucose dehydrogenase (GDH) may optionally be used. Pyrolloquinoline quinine (PQQ) or flavin adenine dinucleotide (FAD) dependent may also be used. Catalytic enzymes other than oxidase enzymes may also be used.
The reaction region 112R may include one or more layers (not explicitly shown) in which the catalytic agents (e.g., enzymes) and/or other reagents may be immobilized or deposited. The one or more layers may comprise various polymers, for example, including silicone-based or organic polymers such as polyvinylpyrrolidone, polyvinylalcohol, polyethylene oxide, cellulosic polymers such as hydroxyethylcellulose.
A vent 112V in the form of a hole or perforation may be provided at the reaction region 112R to improve capillary action and flow of the biological fluid F into the reaction region 112R from the end 106 when applied thereat by the user.
As best shown in
In operation, upon insertion of a droplet of biological fluid F into the capillary passage 112C such that the fluid F comes into contact with the reaction region 112R, and upon application of a suitable voltage bias across the contact pads 112P (e.g., about 300 mV), an electrical current may be generated that may be proportional to a concentration of the analyte present in the biological fluid F. This sensed electrical current may then be conducted by the electrical circuit including the contact pads 112P, the electrical contacts 121, and a conventional analyte measurement circuit (not shown). The calculation of the analyte measurement may be by any currently known method. The measured analyte concentration may then be displayed in any suitable readout form, such as in a display screen 125 of the analyte meter 100 (e.g., a blood glucose meter).
In more detail, analyte meter 100 can include a display screen 125 (e.g., a thin film transistor liquid crystal display (TFT LCD), in plane switching LCD(IPS-LCD), capacitive touch screen LCD, organic light emitting diode (OLED), active matrix OLED (AMOLED), and Super AMOLED, and the like) located on the front side 104A (See
In more detail, and as best shown in
The test strip ejector 114 further includes an engagement member 118 coupled to the slide member 116 and that is configured to be contacted by a user's digit 119 (e.g., finger). The engagement member 118 is provided on the back side 104B, such that the housing body 102 can be held between the thumb and middle or ring finger or both and the index finger can be used to slide the engagement member 118 and eject the test strip 112 from the test strip port 110.
The engagement member 118 is coupled to the slide member 116 by fasteners 118F that connect and secure to posts 118P or other boss features formed on the engagement member 118. Posts 118P extend through slots 102S formed in first part 102A1. A limit stop 123 operates to limit the amount of sliding motion of the slide member 116 within pre-designed distance limits. Limit stop 123 can be made up of a first stop member 123A and second stop member 123B, such as post and slot shown. Post will only allow a pre-defined amount of sliding before the post contacts the end of the slot and limits further motion.
In the depicted embodiment, as best shown in
In some embodiments, the engagement member 118 may include one or more ribs 118R, which are raised elongated elements that can have a dome-shaped profile. The one or more ribs 118R can provide a tactile feel to the engagement member 118 that improves contact with the user's digit (e.g., finger). As shown, the one or more ribs 118R may extend across the width of the engagement member 118. Additionally, the engagement member (118) can comprise a contact radius (R) contactable with a digit 119 (e.g., finger) of the user. Contact radius (R) can comprise a radius of from 3 mm to 8 mm, for example, or even 4 mm to 5 mm in some embodiments, and may extend over an arc of from 0 degrees to about 90 degrees, for example. Contact radius (R) may extend across a width of the engagement member 118, and may in some embodiments extend alongside of one or both of the first side 104C and second side 104D of the engagement member 118.
The test strip ejector 114 further includes a push member 120 coupled to the slide member 116 and moveable therewith. The push member 120 can be coupled at an end of the slide member 116 nearest the end 106 and can include a portion 120E positioned to be engageable with an end 112E of the test strip 112 in order to eject the test strip 112 from the receptacle formed in the test strip receiver 124. Push member 120 may be coupled to the slide member 116 by any suitable means, such as fasteners, snap fit features, adhesive, ultrasonic welding, and the like. Optionally, the push member 120 may be integrally formed with the slide member 116.
As shown, the push member 120 can be received in, and is slidable within, a test strip receiver 124. Test strip receiver 124 can be a molded plastic piece that has a plurality of electrical contacts 121, such as conductive electrical contacts formed (e.g., molded or otherwise fastened) therein and can further include a slot 124S formed therein. Test strip receiver 124 may be coupled to the printed circuit board 122, such as by fasteners, molded snap-in features, or the like. Suitable electrical connections (not shown) may be made between the electrical contacts 121A-121C and the processing circuitry 127P. Processing circuitry 127P is otherwise entirely conventional and is not further described herein. Push member 120 may reside in a slot 131 formed in the printed circuit board 127. An end 127E of the printed circuit board 127 opposite the slot 131 may couple to a power source 133 such as a battery contained inside of the second portion 102B. Suitable conventional battery terminals and battery securing structure can be included in the second portion 102B, and a portion of the second portion 102B may be removable to allow access to the power source, such that it can be changed out, as needed.
As before, the engagement member 318 connects to the slide member 116 in the same manner and in
Tactile traction features 330 can comprise repeated indented areas 3301, which may be provided in a substantially repeating pattern, or optionally in a random pattern. The repeated indented areas 3301 can be formed as indents in the housing body 302 that can be molded in, or optionally provided as molded insert strips that can be received and adhered into elongated side pockets 332 that can be formed in the housing body 302. The material of the tactile traction features 330 can be the same as the rest of the housing body 302 in some embodiments, or optionally can be a soft elastomer material, such as a gel-like material. For example, the soft elastomer material may be any suitable molded or cast material that is different (e.g., softer) than the other molded portions of the housing body 302. For example, the material may be a silicone, urethane, thermoplastic elastomer (TPE), or other “soft durometer” elastomer. “Soft durometer” as used herein means that the elastomer has a shore 00 durometer of less than 60, or even less than 30, for example. Likewise, tactile traction features 330A may be provided on the engagement member 318. For example, they may be provided as molded-in indents or possibly even raised features that enhance tactile feel of the engagement member 318.
In some embodiments, as shown on
In another aspect, a test strip ejector 114, 314 is provided. Test strip ejector 114, 314 comprises an engagement member 118, 318, slide member 116, test strip receiver 124, 324, and a push member 120. Engagement member 118, 318, is configured to be contacted by a user's digit 119, the engagement member 118, 318 extending across a back side 104B, 304B of a housing body 102, 302. The slide member 116 is coupled to the engagement member 118, 318 and is slidable thereby, namely sliding motion of the engagement member 118, 318 along the back side 104B, 304B towards the end 106, 306. The test strip receiver 124, 324 is configured to receive a test strip 112 in a test strip port 110, 310 thereof. The push member 120 is coupled to the slide member 116, and the push member 120 is moveable in the test strip receiver 124, 324 and configured to contact an end of the test strip 112. Sliding motion of the engagement member 118 along the back side 104B, 304B causes the test strip 112 to be ejected from the test strip port 110, 310.
In another aspect, methods of operating the analyte meter (e.g., analyte meter 100, 300) to a eject test strip 112 from a test strip port (e.g., test strip port 110, 310) are described herein. The method 400 of ejecting a test strip 112 from an analyte meter 100, 300, comprises, in block 402, providing an housing body 102, 302 having a test strip ejector 114, 314 integrated therein, the test strip ejector 114, 314 comprising: an engagement member 118, 318 located on a back side 104B, 304B of the housing body 102, 302; a slide member 116 coupled to the engagement member 118, 318 and slidable therewith; a test strip receiver 124, 324 configured to receive the test strip 112 in a test strip port 110, 310 thereof; and a push member 120 coupled to the slide member 116, the push member 120 moveable in the test strip receiver 124, 324.
The method 400 further includes, in block 404, with a user's digit, causing a sliding motion of the engagement member 118, 318 along the back side 104B, 304B to cause the push member 120 to contact an end 112E of the test strip 112 and eject the test strip 112 from the test strip port 110, 310.
The foregoing description discloses only example embodiments of analyte meters, test strip ejectors, and methods of operating analyte meters. Modifications of the above-disclosed analyte meters, test strip ejectors, and methods which fall within the scope of the disclosure will be readily apparent to those of ordinary skill in the art. Accordingly, while the present disclosure has been disclosed in connection with example embodiments thereof, it should be understood that other embodiments may fall within the scope of claims and their equivalents.
Number | Date | Country | Kind |
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202110028945.4 | Jan 2021 | CN | national |