A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | AA | |
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1 | Item # | User Needs, Intended Uses | Design Inputs (Technical Requirements) | Acceptance Criteria | Design Outputs | Design Verification (Outputs = Inputs) | Design Validation (User Needs Met) | ||||||||||||||||||||
2 | Ideal/Goal | Limit | |||||||||||||||||||||||||
3 | |||||||||||||||||||||||||||
4 | Microneedles (MNs) | ||||||||||||||||||||||||||
5 | 1 | Customer Requirements (e.g. Functional) | PMA, ISO, 510k standrads being met/not | ||||||||||||||||||||||||
6 | 1.1 | MNs must not accidentally hurt the user | MNs must not be exposed before or after use | Painless procedure | Skin visibly red swollen | 3D printed model showing needles being covered before use and resheathed after use | 99.99% of MNs produced are successfully covered before and after use | Clinical trials result in an injury rate within industry requirements | |||||||||||||||||||
7 | 1.2 | Device is easily reusable | After each use, the used MN can be ejected and a new one can be attached in under 1 minute | MNs can be ejected and replaced within 1 minute | MNs can be ejected and replaced within 3 minutes | The device will have a snapping mechanism for new MN attachement, and a button for MN ejection after use | 99.99% of MNs are successfully attatchable and ejectable | Clinical trials show that trained users can eject and attach a microneedle under 1 minute | |||||||||||||||||||
8 | 2 | Product Performance Requirements (e.g. Mechanical) | |||||||||||||||||||||||||
9 | 2.1 | Minimally invasive | MNs will not puncture the skin beyond 1800 um | Skin appears normal/ redness disappear withing 5mins after application | Skin redness persists after 3-5hours | Upscaled CAD model and printing of MNs | 100% of MNs are measured to be less than 1800 um | Animal and cadaver studies validate that needles do not puncture beyond 1800 um | |||||||||||||||||||
10 | 2.2 | MNs are secure against skin | Device holds MNs down against skin so the they are fully inserted | MN patch does not come off unless physically peeled off | MN patch comes off due to slight arm movement | Prototype of device with a mechanism for MN deployment that allows for MNs to be held in position until released | 99.99% MNs adhere to skin upon application due to elastic nature of skin (closes in on MNs). perforation depth, and number (many MNs) | Animal and cadaver studies demonstrate secure MN to skin contact | |||||||||||||||||||
11 | 2.3 | MNs are able to draw blood after being inserted into skin | MN length/depth is between 1500- 1800 um, vacuum sealed for suction of at least 100 uL of blood | MNs draw >100uL blood | MNs draws between 80 -100uL blood minimum | Upscaled CAD model and printing of MNs | 100% of MNs are between 1500-1800 um in length and vacuum pressure is able to draw at least 100 uL of blood in 99.99% of tests | Clinical trials demonstrate that MNs can draw an appropriate volume of blood | |||||||||||||||||||
12 | 2.4 | MNs withstand force of being inserted | No MNs break upon puncturing and removal from skin | MNs never break during blood drawing, storage, or transport | 0.01% of MNs fail to pass the durablity test | MNs are made of stainless steel | 99.99% of MNs do not experience anny breakage upon inserertion and removal from skin | Animal and cadaver studies validate MN durability | |||||||||||||||||||
13 | 3 | Biocompatability Requirements | |||||||||||||||||||||||||
14 | 3.1 | MNs are sterile and hypoallergenic | MN material and packaging must be resistant to degradation and pathogens | MNs do not cause any reaction on patient skin | Skin redness persists after 3-5 hours | MNs will be made of stainless steel. They will arrive in uncompromised vaccuum-sealed packaging. | 99.99% of MNs arrive in uncompromised packaging. 99.99% of pathogen tests are negative | Animal and clinical studies to verify biocompatability | |||||||||||||||||||
15 | |||||||||||||||||||||||||||
16 | Masager | ||||||||||||||||||||||||||
17 | 1 | Customer Requirements (e.g. Functional) | |||||||||||||||||||||||||
18 | 1.1 | Device massages skin to increase blood flow | Device will vibrate at a frequency between 30-50 Hz | Device vibrates between 30-50Hz | Device vibratation is +/- 5 Hz | Prototype with motor that allows massager to move | Vibration testing shows that vibrations between 30-50 Hz can be consistently produced during the device's lifetime | Animal and clinical studies demonstrate increased blood flow after vibrations | |||||||||||||||||||
19 | 1.2. | Device heats skin to increase blood flow | Device will contain a non-flammable heating pad that can produce adjustable temperatures between 40-50 degrees C | Device can be heated to between 40-50 degrees C | Device heating is +/- 5 degrees | Prototype with insulative fabric heating pad and 3D-printed CAD model of a heating system | Heating pad temperature is measured to be within 40-50 degrees C during the device's lifetime | Temperatures are clinically shown to dilate blood vessels without damaging the skin barrier or causing pain | |||||||||||||||||||
20 | 1.3 | Device can easily be secured to patient's arm or moved by the user | Device does not detatch from patient's arm when secured. Device does not detatch from user's hand when secured. Device can be secured within 30 seconds | Device can be secured within 30 seconds and remains in place | Device moves or detaches with considerable movement | Device will have a velcro strap that can be used to secure the device to the patients arm, or reversed so the device is secured to the user's hand for easy movement | Standard velcro strap tested for force tolerance and provides secure attachments and easy removal | Clinical studies verify that trained users can easily secure the device to their hand or the patient's arm | |||||||||||||||||||
21 | 2 | Product Performance Requirements (e.g. Mechanical) | |||||||||||||||||||||||||
22 | 2.1 | Durability: Device can withstand rigors of daily use | Device can be used daily for 5 years without replacement | Device never compromised during its guaranteed lifetime | Device does not meet efficiency standard set during manufacture while in use | Sketches, CAD model and 3D printing of a sturdy device design | Accelerated life test is performed to simulate 5 years of use | Clinical studies verify that device can be used daily for 5 years | |||||||||||||||||||
23 | 2.2 | Portability: device must be compact and portable and lightweight to promote ease in transportation under different settings | Device must be 3lbs or less and smaller than 6in x 6in. | Device is under 3lbs and smaller than 6in x 6in | Device weighs 3.5 pounds, is smaler than 7in x 7in | Sketches, CAD model of device casing, 3D printed prototype | 99.99% of devices will be measured and weighed and must fall within the specificaitons | Clinical studies verify that users are able to transport the device as needed | |||||||||||||||||||
24 | |||||||||||||||||||||||||||
25 | Both | ||||||||||||||||||||||||||
26 | 4 | Regulatory Requirements | |||||||||||||||||||||||||
27 | 4.1 | As a class II device, the product should be cleared through the 510(k) process | The device passes the 510(k) process | Device passes the 510(k) process | N/A | Description of the device's intended use and indication for use | Clearing through the 510(k) process | Device passes the 510(k) clearning process | |||||||||||||||||||
28 | 4.2 | Meet general FDA labeling requirements | The device meets FDA labeling requirements | Device meets FDA labeling requirements | N/A | Detailed Labelling specifications | Detailed Labelling specifications | Device meets FDA labeling requirements | |||||||||||||||||||
29 | 4.3 | Undergo mandatory performance standards | The device is tested and meets mandatory performance standards | The device is tested and meets mandatory performance standards | N/A | Performance specifications | Device is tested using standard procedures for a class II device | Device passes testing for a class II device | |||||||||||||||||||
30 | 5 | Interfaces with Other Systems | |||||||||||||||||||||||||
31 | 5.1 | The microneedle and massager devices are able to be used together to improve blood drawing | The massager can be placed on the upper arm to increase blood flow while the microneedle draws blood from the lower arm | Devices can be used simultaneously or one after the other | Devices can be used one after the other | Detailed schematic including relevant dimensions and speciifcations | Devices do not physically interfere with each other during testing, and each device is shown to function properly while in the presence of the other | Clinical trials demonstrate successful blood drawing when devices are used together | |||||||||||||||||||
32 | 6 | Other | |||||||||||||||||||||||||
33 | 6.1 | Detailed technical support of device is made available | Provide a comprehensive user manual and 24/7 technical assistance hotline for the device | All customer needs can be resolved by customer support resources | 1% of support needs are not resolved | User Manual | User Manual and consumer support via calls and live chat on website | 99% of customers report satisfaction with customer support | |||||||||||||||||||
34 | 6.2 | Efficient training for use must be provided to healthcare professionals | The training program should have a maximum duration of 2 hours for healthcare professionals with blood draw experience | All trainees are able to pass the training program | 95% of trainees are able to pass the training program | 2-hour training program for healthcare prfessionals | Curriculum is planned, practical and written tests are created to test essential knowledge | Trainees tested on their knowledge by practical demonstration and written quizzes are passed with 100% accuracy | |||||||||||||||||||
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