ORIGINAL RESEARCH—SURGERY
Physician and Patient Satisfaction with the New AMS 700
Momentary Squeeze Inflatable Penile Prosthesis
L. Dean Knoll, MD,* Gerard Henry, MD,
†
Daniel Culkin, MD,
‡
Dana A. Ohl, MD,
§
Juan Otheguy, MD,
¶
Ridwan Shabsigh, MD,** Steven K. Wilson, MD,
††
and John Delk II, MD
‡‡
*Center for Urological Treatment and Research—Urology, Nashville, TN, USA;
†
Regional Urology—Urology, Shreveport,
LA, USA;
‡
University of Oklahoma—Urology, Oklahoma City, OK, USA;
§
University of Michigan School of Medicine—
Urology, Ann Arbor, MI, USA;
¶
Advanced Research Institute—Urology, New Port Richey, FL, USA; **Maimonides Medical
Center—Urology, Bronx, NY, USA;
††
Institute for Urologic Excellence—Urology, Indio, CA, USA;
‡‡
Department of Urology,
University of Arkansas—Little Rock, AR, USA
DOI: 10.1111/j.1743-6109.2009.01251.x
ABSTRACT
Introduction. A single-armed, prospective, multicenter study evaluated the redesigned American Medical Systems
(AMS) 700 Momentary Squeeze (MS) pump inflatable penile prosthesis (IPP) with enhanced features for ease of
implantation and patient manipulation. The device incorporates design changes to all components: pump, cylinders,
rear-tip extenders, and reservoir.
Aim. To assess physician and patient satisfaction with the new AMS 700 MS pump.
Methods. Patients were selected from the existing population experiencing erectile dysfunction (ED) without
previous prosthetic implantation.
Main Outcome Measures. Survey questionnaires were used to capture physician feedback on ease of implantation
and patient education. Patient satisfaction with the device and existence of autoinflation were assayed.
Results. Sixty-nine patients were implanted at seven U.S. sites. Mean age was 60.1 9.6 years. History of ED was
>5 years in 34 (44.7%) patients. Main ED etiology was organic, nonspecific (32%). Eighty-four percent of the
physicians felt proximal cylinder insertion was easier because of the smaller angle of cylinder input tubing and
narrower base diameter. The new pump was felt easier to implant than the previous model by 57% of the physicians.
The patients found the manipulation of the pump simple at device activation, with 96% easily locating the inflation
bulb and 94% deflating the device with one push of the deflation button. Reviews were mixed among physicians
concerning ease of training compared with the Tactile pump. Patient training was easier in 71%, harder in 21%, and
same in 8%. Nevertheless, 67% of the patients were trained in 6 minutes or less. At 6 months, 77% of the patients
were very satisfied, 9% somewhat satisfied, and 14% dissatisfied. Autoinflation occurred in two patients (3%).
Conclusion. The new AMS 700 MS IPP seems a distinct improvement over previous devices with most physicians
feeling implantation and patient instruction were easier. The device also satisfied 86% of the users and virtually
eliminated autoinflation. Knoll LD, Henry G, Culkin D, Ohl DA, Otheguy J, Shabsigh R, Wilson SK, and Delk
J II. Physician and patient satisfaction with the new AMS 700 Momentary Squeeze inflatable penile
prosthesis. J Sex Med 2009;6:1773–1778.
Key Words. Erectile Dysfunction; Penile Prosthesis; Impotence Surgery; Penile Implant Surgery
Introduction
E
rectile dysfunction (ED) is a major quality-of-
life disorder that affects approximately 152
million men worldwide, and this number is
expected to reach 322 million by 2025 [1]. The
introduction of phosphodiesterase type 5 (PDE5)
inhibitors in 1998 has markedly contributed to
increased awareness and patients requesting
therapy for ED. The introduction of these oral
1773
© 2009 International Society for Sexual Medicine J Sex Med 2009;6:1773–1778