[German Artificial Sphincter System--GASSII: first in vivo evaluation of a novel and highly integrated sphincter prosthesis for therapy of major fecale incontinence].
The German Artificial Sphincter System GASS consists of a support ring which includes a fluid reservoir on the outer side and an occlusive cuff on the inner side. The cuffs are designed as polyurethane hollow bodies with a pre-determined inflation volume and are connected to an integrated piezo micropump/valve unit. To evaluate the threshold of continence, the GASS was placed around the anorectal junction via a perineal approach in one mini pig. The novel cuff design reduces the occlusion pressure and allows low compression volumes. Low operating pressures indicate a minor risk of ischemia injury of the bowel. The operation time is estimated at about 6 days with no recharging of the battery. The novel remote controlled GASS is a highly integrated prosthesis for placement around the anal canal or lower rectum and is effective in restoring continence for liquids and solids in vitro and in vivo.
Schrag
H J
HJ
Klinik für Allgemein-und Viszeralchirurgie mit Poliklinik, Albert Ludwigs Universität Freiburg. h.j.schrag@t-online.de
Ruthmann
O
O
Doll
A
A
Woias
P
P
Hopt
U T
UT
D001003:Anal Canal / Q000503:physiopathology* / Q000601:surgery; D000818:Animals; D001187:Artificial Organs; D019544:Equipment Failure Analysis; D005242:Fecal Incontinence / Q000534:rehabilitation* / Q000601:surgery; D005858:Germany; D019736:Prostheses and Implants; D011474:Prosthesis Design; D013552:Swine; D013556:Swine, Miniature; D018511:Systems Integration; D013686:Telemetry / Q000295:instrumentation*; D013813:Therapy, Computer-Assisted / Q000295:instrumentation*; D016896:Treatment Outcome