Since this is stated to be an IVD medical device, the relevant regulatory markets and classification of the device are probably important to consider. If this is the case of a device that would be submitted for self-certification under IVDD, but is now being considered for marketing under IVDR, you will have a significantly different regulatory burden. Likewise, if this is a laboratory developed test under CLIA in the US, design controls are not required; however, if it is a medical device under FDA (enforcement discretion aside), that should be a factor too.
The advice given already to complete the necessary verifications and validations is correct.
With respect to the approach to you lined out, you may consider analyzing the available PMS data during remediation to determine if your product is potentially able to meet your design requirements. Likewise, searching scientific literature and/or guidance should reflect back on the design inputs and design outputs, as well as ensuring that the design meets the current state of the art (special consideration should be made with respect to your company's established policy for establishing risk acceptability). Complaint data/customer satisfaction data should likewise inform your design inputs and user needs. Lastly, IQ/OQ/PQ may not be useful information to consider unless manufacturing is not complete until the device is assembled on-site. It's worth noting that none of the proposed approaches can demonstrate (to any reasonable certainty) that design outputs meet each design input, nor that representative samples meet user needs and intended uses.
As mentioned with respect to CAPA, it would seem that this requires corrective action and should probably be accompanied by some level of containment and consideration as to whether or not field action is necessary as part of the correction. The very notion that this device is "fit for purpose, safe and achieves its intended use" is at the very least unsupported if not incorrect at this point.
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Christopher Erwin
Scottsdale AZ
United States
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Original Message:
Sent: 27-Aug-2021 10:59
From: Dan O'Leary
Subject: Design Verification and Validation (DV&V)
When discussion verification and validation I recommend using the appropriate adjective. For example, design verification, design validation, process validation, software validation, etc. This avoids a lot of confusion.
In this post, which I answer in more detail in another response, the topics are design verification and design validation only.
Bill is correct that DV&V doesn't exist, because it is really two different things. We see this "abuse of language" in many places. The common is CAPA. I have people tell me they will open a CAPA. My first question is whether they intended to conduct corrective action or preventive action. They are two different processes.
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Dan O'Leary CQA, CQE
Swanzey NH
United States
Original Message:
Sent: 27-Aug-2021 08:44
From: Edwin Bills
Subject: Design Verification and Validation (DV&V)
While Dan alluded to it, but did not specifically mention there is no such thing as "DV&V". Design Verification is a separate and distinct activity from Design Validation. They have very different requirements and work with different aspects of the design with different focuses and different requirements.
Design Validation is very different from Process Validation, which your statement seems to confuse. I recommend you refer to the "ISO Practical Guide-ISO 13485:2016 Medical devices" for a good discussion of the differences in the three topics.
I might mention that successful Design Verification is an input to both Process Validation and Design Validation, so it should be completed first. Design Validation can use product that has been created during the PQ phase of Process Validation.
Since it appears you are doing this from a retrospective perspective you must provide a rationale for why each of the three activities you are performing after the fact provides sufficient basis to keep existing distributed product on the market. You should also provide a rationale for product already on the market, if any discrepancies in the product are found during the three activities.
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Edwin Bills MEd, CQA, RAC, BSc, CQE, ASQ
Principal Consultant
Overland Park KS
United States
elb@edwinbillsconsultant.comPrincipal Consultant
Original Message:
Sent: 26-Aug-2021 10:09
From: Dan O'Leary
Subject: Design Verification and Validation (DV&V)
You are making it too complicated. Just do the design verification and the design validation as you should have initially. The other things you list are not relevant.
Document the protocols and reports in the design history file. Each should have an indication that you performed them after release to production and are part of a correction.
These all fall under corrections of QMS nonconformances.
Also, open a corrective action to determine the cause of the nonconformance and eliminate it.
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Dan O'Leary CQA, CQE
Swanzey NH
United States
Original Message:
Sent: 26-Aug-2021 05:29
From: Anonymous Member
Subject: Design Verification and Validation (DV&V)
This message was posted by a user wishing to remain anonymous
Hi team
I will try to explain this complicated subject as best I can. This is for an IVD medical device.
We have recently identified numerous deficiencies in our DV&V stages, in that there are plenty of design inputs that do not have DV&V completed. After many internal discussions, we've come up with the following approach:
- Since our devices have been on the market around the world for over 10 years, post market surveillance data to indicate if there are failures for any of the design inputs.
- Scientific literature, guidelines etc. search, if any exist. Otherwise opinions from internal subject matter experts.
- Client acceptance / approval documents.
- IQ/OQ/PQ as design verification.
Since this is a retrospective completion of the gaps, it is really hard to come up with the most efficient way to fulfil the requirement and achieve compliance. We know for a fact that our device is fit for purpose, safe and achieves its intended use.
I am really looking forward to your thoughts, and if you need more clarity then let me know.