Most sales representatives are working to help solve your problems, but we must keep in mind that they also have other motivations for various statements – specifically their personal annual income. They have a built-in motivation for making the statements that you hear. There are sales training classes using role-playing exercises to learn key phrases and ways to explain specific aspects of a product, along with financial incentives to sell certain products. Most manufacturers have training departments that work hard to educate sales staff about what they can and cannot say, but the individual may not always adhere to their training when trying to sell a product to your facility.
For anyone making a decision about any aspect of clinical practice, it is our responsibility to base product decisions on solid evidence. Where is this evidence found? First, look at published standards of practice (e.g., Infusion Nurses Society, Oncology Nursing Society, etc.) and guidelines (e.g., Centers for Disease Control, Society for Healthcare Epidemiology of America, etc.). Look at the date of publication on those documents. If those documents are aging, then you will need to go to more recent studies published in peer-reviewed journals to see if there is new information.
Literature from a manufacturer is a valuable resource as well, especially the instructions or directions for use that accompanies all devices. Do the verbal statements from the sales representative match this literature? The claims allowed by the company are addressed in this literature along with other supporting white papers and sales materials. Look at the references on these pieces. How old are the quoted studies? Also, remember that a white paper is written for marketing purposes and has not been through any blinded peer-reviewed process. Do these resources quote presentations or posters from conferences? These are also lacking any type of blinded peer-review process.
Relying exclusively on verbal information from a local sales representative is not adequate for product decisions or practice questions about a specific product. The sales representatives job is to sell product. While most are concerned about clinical outcomes, they do not have the same perspective as clinical decision-makers. All claims made in a conversation must be supported by sound clinical evidence. There can easily be a situation with new devices where this evidence from clinical studies is not yet available. I would recommend benchmarking your practice against what is being done in other healthcare facilities or posting a question to colleagues on an online discussion forum instead of total reliance on this verbal information from a sales situation.