Plastics and Polymers Engineering Expert Witnesses: 3

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Karl R. Leinsing, MSME, PE, President of ATech Designs, Inc., is a Professional Mechanical Engineer who specializes in Medical Device Product Development from concept to production. Mr. Leinsing has been granted over 34 patents (needle free IV valves, laparoscopic devices, needlescopic devices, suture lockers, catheters, mitral valve repair devices, knitting machines) and excels in solving the most complicated problems and design challenges. His company has a fully equipped medical lab with calibrated measurement and test equipment and all is fully documented with high quality reports with pictures and video to provide credible results and easy to understand compelling data.

The winner of five design awards, Mr. Leinsing is recognized as one of the top 100 medical device professionals in the nation by MD&DI. For dedication to his industry, he was made the 2014 Chairman of the Medical Device and Manufacturing Conference in Anaheim, CA. Mr. Leinsing has also been acknowledged for his work in a publication by Life Magazine. Mr. Leinsing offers litigation support services to the legal community. He has extensive experience with Patent and Product Liability cases including report writing, depositions, and testimony.

Areas of Expertise:

Intravenous (IV) Systems & Disposables
Hernia Repair
Endometrial Ablation
Laparoscopic Instruments
Injection Ports
Catheters
Heart Valve Repair / Replacement
Subcutaneous Ports

Bed Rails
Cervical Screws
Syringes, pen injectors, auto-injectors
IV / Insulin Pumps
Glucose Monitors
Peritoneal Dialysis Pumps
Abdominal Aortic Aneurysm (AAA) Repair
Sleep Apnea Devices (CPAP)

View Karl Leinsing's Consulting Profile.

• Karl Leinsing's Curriculum Vitae

• Patents

• Awards

• Chemical Compatibility and the SmartSite Needle-free- Valve

6/24/2014 · Expert Witnessing

How a Medical Device Expert Witness Can Assist In a Case

By: Karl R. Leinsing

Experienced Medical Device Experts can assist with a case in many different ways. First, they have industry knowledge of the medical device industry and can assist with prior art in patent litigation cases for example. They understand the technology and how claim terms are understood for one skilled in the art of medical device design, testing, and manufacturing. This firsthand information can then assist with proper claim construction and infringement analysis. Experience with medical devices product development can also assist in determining what is obvious in the field and what is not as it pertains to patent validation.

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Robert C. Hoffman Jr, PE, CFEI, is a licensed Professional Engineer certified as a Fire and Explosion Investigator. With 30 years of experience, the primary focus of his knowledge is a deep understanding and application of all aspects of Product Safety for the Consumer Goods Industry.

Background Experience: For 27 years, Mr. Hoffman worked with the Whirlpool Corporation in various roles. He served the company as a Drum Sub-System Design/Development Engineer, a Laundry Product Approval Engineer, and Dryer Platform Structures Sub-System Leader and Engineer. His final position with the company before retirement was Principal Engineer, a position he served in for 8 years.

Mr. Hoffman's primary areas of specialization are Heat / Combustion Containment strategies, and Electrical System Design strategies in expected customer abnormal use. His involvement in field investigation evaluations and product liability support allow him to understand how products react in the field and produce both relevance safety tests and design solutions.

Litigation Support: Mr. Hoffman works as an expert witness with clients needing to understand if a product in the field has some type of design or manufacturing defect, as well as clients needing support to defend their product against a potential field hazard allegation. His background in statistics and presentation of data allows him to take complex situations and break the information down into simple, yet accurate assessments of the situation.

Mr. Hoffman's services include product failure mode and effects analysis, root cause investigations, thorough reporting, depositions, and trial testimony as needed.

Areas of Expertise:

Product Safety / Appliance Safety
Product Fire Hazard
Electric Shock
Lacerations
Suffocation

Contact Burn Hazards
Warning Labels
Faulted Components
Clothes Dryer Fire Containment
Code Evaluation

View Robert C. Hoffman's Consulting Profile.

• Robert C. Hoffman's Curriculum Vitae

3/23/2021 · Fires & Explosions

Plastic Component Performance Role In A Consumer Product Fire

By: Robert C. Hoffman Jr, PE, CFEI

In most US households there are all types of consumer products used every day that add value to the people using them. The product performs a chore or other household task more efficiently, adds entertainment value to their lives, or delivers a basic necessity such as heat, AC, or hot water. Most of these products use some form of energy to produce the desired function.

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Dr. David W. Riley is an Extrusion Analysis & Plastics Rheological Consultant. Dr. Riley has spent over nineteen years as a consultant in the field of Plastic Processing. He has over forty years of experience in developing Polymer Defect Technology and fifteen years in developing the field of Plastic and Polymer coefficient of friction related to the feed section of the extruder.

Areas of Expertise: