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Medically reviewed by Dr. Edward Gheiler, MD, FACS — August 21, 2026
Home › Penile Implants › AMS 700
The AMS 700 Penile Implant
The AMS 700 is Boston Scientific’s three-piece inflatable penile prosthesis — the device Dr. Edward Gheiler, MD, FACS implants in more than 400 procedures a year, and the operation he teaches to other urologists in Boston Scientific physician-education programs (a paid teaching relationship we disclose because this page describes that company’s device). This page covers the device itself: the models, how it works, sizing, MRI, and the honest risks.
AMS 700 Center of Excellence · Boston ScientificWhat the AMS 700 is
A three-piece inflatable implant has three connected components, all concealed inside the body: two cylinders in the penis, a pump in the scrotum, and a fluid reservoir placed inside the body. Squeezing the pump moves fluid into the cylinders to create an erection; releasing the valve returns the fluid to the reservoir and the penis becomes soft again. Nothing is visible from the outside, and you control it entirely yourself. Our interactive how-it-works page shows each component in place, and if a pump ever feels stuck, the reset guide covers the fix.
Two pump generations are in circulation: the MS Pump on earlier devices and the newer Tenacio pump. Your device card records which model and pump you have.
The models: LGX, CX, and CXR
The difference is in the cylinders. The AMS 700 LGX expands in both length and girth when inflated (the most common primary choice); its cylinders come in 12, 15, 18, and 21 cm lengths, extended as needed with rear tip extenders. The AMS 700 CX expands in girth only, with strong rigidity and support, used when length expansion is not anatomically advisable. The AMS 700 CXR is a narrow-base version of the CX, used in revision cases or anatomically smaller patients. There is no single best implant for every patient: the right choice depends on your anatomy, tissue quality, medical history, and what matters most to you. Your surgeon selects and sizes the device during surgery to fit your anatomy exactly — read what to expect for size and the full CX vs. LGX guide.
The InhibiZone™ surface
Every AMS 700 Dr. Gheiler implants carries InhibiZone: the device surface is impregnated with two antibiotics, minocycline and rifampin, during manufacture, so the implant is already treated before it reaches the operating room. (The AMS 700 line is also made in configurations without InhibiZone; your device card records which you have.) Infection remains a recognized risk of any implant surgery; how Dr. Gheiler’s practice measures and reports its own results is on the outcomes and safety page.
MRI, airports, and daily life
The AMS 700 does not rule out an MRI of any body part: tell the imaging center you have a penile prosthesis and which model (your device card records it), and they verify it against the manufacturer’s labeling the same way they do for joint replacements. At the airport, the implant is overwhelmingly silicone and soft materials, and you are never required to announce it. The full details are in our MRI and airport security guide.
How long it lasts, and the honest risks
The AMS 700 is a mechanical device: it works regardless of the cause of ED, and like any mechanical device it can eventually fail and need replacement. Most men go many years before needing one — see how long a modern implant lasts. Risks include infection, mechanical failure, erosion, and the possibility of revision surgery; Dr. Gheiler also repairs and replaces implants placed elsewhere, so he sees what goes wrong and tells you about it plainly before surgery.
Why have your AMS 700 placed by Dr. Gheiler
- He teaches this operation. Dr. Gheiler teaches AMS 700 surgical technique to other urologists in Boston Scientific physician-education programs, and he is a Boston Scientific AMS 700 Center of Excellence.
- The Concealed-Scar Scrotal Technique™. A 15–20 minute outpatient operation at the affiliated surgical center, through a single scrotal incision with the scar concealed in the natural scrotal skin. See what having the surgery in Miami looks like.
- Both languages. Spanish-speaking patients know the device as la bombita; consultations happen in English or Spanish, and men travel from across the U.S. and Latin America for surgery with him.
Frequently asked questions
Who makes the AMS 700 penile implant?
Boston Scientific. AMS 700 is the product family name for its three-piece inflatable penile prosthesis, the implant Dr. Gheiler uses in his Miami practice and teaches to other urologists in Boston Scientific physician-education programs.
What is the difference between the AMS 700 CX and LGX?
The main difference is how the cylinders expand: the AMS 700 LGX is designed to expand in both length and girth when inflated, while the CX offers controlled expansion with strong rigidity and support. A third variant, the CXR, is a narrow-base version of the CX used in revision cases or anatomically smaller patients. All are inflatable implants in the same AMS 700 family, and the right choice depends on your anatomy, tissue quality, and priorities.
What sizes does the AMS 700 come in?
The LGX cylinders come in 12, 15, 18, and 21 cm lengths, adjusted with rear tip extenders; the CX and CXR lines have their own size ranges. You do not choose a size from a catalog: your surgeon measures and sizes the device during surgery to fit your anatomy exactly.
Can I have an MRI with an AMS 700?
Having an AMS 700 does not rule out an MRI of any body part. Tell the imaging center you have a penile prosthesis and which model when you book, and the technologist verifies the device against the manufacturer’s current labeling, the same workflow used for joint replacements.
How long does the AMS 700 last?
It is a mechanical device, so it can eventually fail and need replacement, but most men go many years before needing one. When a replacement is needed, revision surgery is a routine part of Dr. Gheiler’s practice.
Does insurance cover the AMS 700?
Medicare covers inflatable penile implant surgery when ED has a documented medical cause that has not responded to conservative treatment, and many commercial plans do as well, subject to each plan’s exclusions and prior authorization. Coverage is not guaranteed until verified: the practice checks your individual coverage and handles the authorization before anything is scheduled.
Dr. Gheiler is a paid trainer and physician educator for Boston Scientific, the manufacturer of the AMS 700. This page describes the device he uses in his own practice; it is patient education and does not replace a medical consultation. Individual results vary. Discuss your specific case with your urologist.
Talk to the surgeon who teaches the AMS 700
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