Occlusive cuff and implantable occlusive system comprising such a cuff

Abstract

The invention relates to an occlusive cuff ( 1 ) for selectively occluding an anatomical duct ( 2 ), comprising: a band ( 10 ) suited to surrounding said anatomical duct ( 2 ), provided with a closing device suited to maintaining the band wound upon itself over a determined length (L 10 ), and an inflatable reservoir ( 11 ) arranged on an inner face of the band ( 10 ), said cuff being characterised in that the inflatable reservoir ( 11 ) extends over only a part (L 11 ) of the length (L 10 ) of the band ( 10 ), another part (L 13 ) of said length (L 10 ) defining a free inner surface ( 13 ) of the band configured to form a bearing zone for the anatomical duct, such that when the band ( 10 ) is maintained wound upon itself by the closing device, the inflatable reservoir ( 11 ) is opposite said free inner surface ( 13 ) of the band.

1 . An occlusive cuff for selectively occluding an anatomical duct, comprising:
 a band suited to surrounding said anatomical duct, provided with a closing device suited to maintaining the band wound upon itself over a determined length, and   an inflatable reservoir arranged on an inner face of the band,   wherein the inflatable reservoir extends over only a part of the length of the band, another part of said length defining a free inner surface of the band configured to form a bearing zone for the anatomical duct, such that when the band is maintained wound upon itself by the closing device, the inflatable reservoir is opposite said free inner surface of the band.   
     
     
         2 . The cuff of  claim 1 , wherein the length of the reservoir is chosen such that when the band is wound upon itself around the anatomical duct and when the reservoir is inflated, the anatomical duct is compressed between the wall of the reservoir and the free surface of the band, the reservoir exerting a push force of the anatomical duct against said free surface of the band. 
     
     
         3 . The cuff of  claim 1 , wherein the inflatable reservoir and the free inner surface of the band are configured to be in direct contact with the anatomical duct when the band is wound around said anatomical duct. 
     
     
         4 . The cuff of  claim 1 , wherein the inflatable reservoir extends over a length less than or equal to 75% of the length of the band. 
     
     
         5 . The cuff of  claim 1 , wherein the length of the band is comprised between 30 and 110 mm, preferably between 70 and 110 mm. 
     
     
         6 . The cuff of  claim 1 , wherein the band is formed of a textile coated with a biocompatible elastomer. 
     
     
         7 . The cuff of  claim 1 , wherein the reservoir is made of a biocompatible elastomer. 
     
     
         8 . The cuff of  claim 6 , wherein said biocompatible elastomer is silicone. 
     
     
         9 . The cuff of  claim 1 , further comprising a connector arranged at one end of the band to ensure a fluid connection between the reservoir and a tubing. 
     
     
         10 . The cuff of  claim 9 , wherein the closing device comprises an opening formed at one end of the band and able to engage around the connector to maintain the band wound upon itself. 
     
     
         11 . The cuff of  claim 1 , wherein the closing device comprises a surface provided with teeth at one end of the band and an attachment device comprising a slot for the insertion of said end, configured to block the teeth against an extraction force of said end. 
     
     
         12 . The cuff of  claim 11 , wherein the teeth are arranged on the outer face of the band. 
     
     
         13 . An implantable occlusive system comprising an implantable housing comprising a pump, and an occlusive cuff according to  claim 1 , in fluid connection with the pump to vary the volume of fluid in the inflatable reservoir. 
     
     
         14 . The system of  claim 13 , consisting of an artificial urinary sphincter.