Online Safety Community

Article on “Statistical Sampling Plans for Medical Devices”

One of the important aspects of design control of medical devices is statistical sampling plans for medical devices. To gain an understanding of the idea of statistical sampling plans for medical devices, one needs to understand the process of medical device design controls.

Statistical sampling plans for medical devices needs to be seen in this background: Under Sec. 820.30 of Title 21 of Code of Federal Regulations (CRF) the FDA sets out requirements from medical device manufacturers -which want to market certain categories of medical devices in the US -for establishing and maintaining procedures to implements design controls into the device.

An understanding of design controls is necessary first

First of all, what are design controls? Design controls are linearly and logically described and recommended steps that manufacturers have to take for ensuring that they have developed what they meant to develop. In addition, design controls have to also be implemented to ensure that the final product is in line with the expectations and needs from the customer's perspective.

Statistical sampling plans for medical devices come at a slightly later stage. Design controls pave way for the validation processes of design verification and design, which are done to ensure that the device design has met critical specifications or outputs and fulfill the requirements for the safety requirements, intended use, or specified application.

Verification and validation

This stage makes way for the next, which is fulfillment of design verification and validation (V&V), as required under Sec. 820.50 of 21 CFR. A core part of this code is the requirement from manufacturers for establishing and maintaining procedures to locate valid and proper statistical techniques for the process capability and product characteristics to be considered applicable. These are what constitute statistical sampling plans for medical devices

More of rule of thumb

Statistical sampling plans for medical devices need to be written and based on a well-established statistical foundation. However, the FDA does not prescribe a formal plan for writing down statistical sampling plans for medical devices. These are to be based more on rule of thumb. In other words, there are no acceptable limits violations under statistical sampling plans for medical devices. The statistical sampling plans for medical devices need to be implemented on a case-to-case basis, based on the device's characteristics and features.

In arriving at statistical sampling plans for medical devices, the FDA sets out the following rule:

Table 1

Binomial Staged Sampling Plans

Binomial Confidence Levels

able 2

Binomial Staged Sampling Plans

Binomial Confidence Levels

ucl = Upper Confidence Level

Source:http://www.fda.gov/ICECI/Inspections/InspectionGuides/ucm170830.htm

These constitute the core guidance for statistical sampling plans for medical devices.

Learn more on this topic by visiting: http://www.globalcompliancepanel.com/control/globalseminars/~produc...

Views: 7

Comment

You need to be a member of Online Safety Community to add comments!

Join Online Safety Community

Take our poll!

Take our poll!

Latest Activity

kate smith posted a blog post

Dealing with substance abuse at the workplace

That substance abuse is a serious issue and menace at the US workplace needs no iteration, if one takes a look at these disturbing statistics compiled by the National Drug Free Workplace Alliance (NDWA) for five years from 2008 suggest:-        Close to nine percent of the workforce in the age group of 18-64 used alcohol heavily in one month prior to the survey -        More than eight percent used illicit drugs in the same preceding period -        Between nine and ten percent of the employees…See More
2 hours ago
Adam Fleaming posted a blog post

Clarifying the misconceptions about DMFs and Quality Agreements

A Drug Master File (DMF) is a file that lists the materials and processes that have gone into a drug. This submission is made by manufacturers of drugs to the FDA, and has to contain everything that goes into the drug, and has to include not only the materials and the processes; but also confidential information pertaining to the facilities in which the drugs are manufactured. All the inputs that have gone into not just the manufacturing, but also the packaging and storing of all human drugs…See More
3 hours ago
John Robinson posted a blog post

Upcoming FDA FSMA Rules on the Sanitary Transportation of Human and Animal Foods

The process of finalizing new food safety rules by the U.S. Food and Drug Administration (FDA) is underway. The accent of these upcoming FDA FSMA rules on the sanitary transportation of human and animal foods is the ways by which scientific and safe transportation and logistics involved in food transportation can be bettered. The FDA is required to establish rules for improving, auditing and enforcing new rules relating to food transportation. Congressional instructions have been issued for…See More
3 hours ago
Nakul Pratap posted blog posts
Saturday

Forum

What's your favorite motivational/safety quote? 98 Replies

Favorite Motivational Quote: If you want something, you'll find a way - If not, you'll find an excuse.Favorite Safety Quote: Don't learn safety by accident!Continue

Started by Michelle Sears. Last reply by David R Snell Apr 26.

Feedback on a injury prevention product we're building.

Hi everyone!For full transparency ill tell you a little about myself and what I hope to accomplish. My name is Zuber and I'm an engineering student who founded a startup helping to build wearable…Continue

Tags: product, prevention, injury, back, safety

Started by Zuber Ahmed Apr 24.

Best overall personal safety book? 1 Reply

What do you think is  the best all-in-one book out there for optimizing personal safety and the safety of one's family?  Right now I have …Continue

Started by David R Snell. Last reply by David R Snell Apr 21.

Fire codes for residential buildings

Hi,Can anybody kindly give me a hint how to find Fire Codes for residential buildings in different cities in the United States?Continue

Started by Darren Asad Apr 14.

OSHA and Machine Guard Door Safety???

We have what we feel is not a unique situation and were wondering if anyone might of run across this challenge and know more about the requirements.  We are building a small machine system that…Continue

Tags: electric, osha, air, door, interlocked

Started by Scott V Mar 24.

Badge

Loading…

© 2017   Created by Safety Community.   Powered by

Badges  |  Report an Issue  |  Terms of Service