US 11,812,930 B2
Devices for the treatment of benign prostatic hyperplasia and related lower urinary tract symptoms
Jimmy Jen, Saratoga, CA (US); Dan Zaretzka, Sunnyvale, CA (US); Kenneth Chih-Ping Chang, San Jose, CA (US); and Kondapavulur T. Venkateswara-Rao, San Jose, CA (US)
Assigned to Prodeon Medical Corporation, Taipei (TW)
Filed by Prodeon Medical Corporation, Taipei (TW)
Filed on Dec. 2, 2020, as Appl. No. 17/109,814.
Claims priority of provisional application 62/943,112, filed on Dec. 3, 2019.
Prior Publication US 2021/0161642 A1, Jun. 3, 2021
Int. Cl. A61F 2/04 (2013.01); A61F 2/966 (2013.01); A61B 1/307 (2006.01); A61B 1/00 (2006.01)
CPC A61B 1/00135 (2013.01) [A61B 1/0008 (2013.01); A61B 1/307 (2013.01); A61F 2/04 (2013.01); A61F 2/966 (2013.01); A61F 2002/047 (2013.01); A61F 2220/0008 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A sheath for retrieving or placing an implant from or at a placement location in a lumen of a body, comprising:
an elongated shaft member with at least one shaft member region of modified flexibility having at least one lumen with an inner diameter configured for advancement of a cystoscope therethrough, an atraumatic distal end and a proximal end having a tubular portion, a flared portion having an inner surface and an outer surface, the atraumatic distal end being positioned opposite to the proximal end and configured to compress the implant to a reduced profile; and
a hub secured to the outside surface of the proximal end of the elongated shaft member, the hub having an opening that tapers from a proximal diameter greater than the inner diameter of the shaft member, and comprising: i) a proximal portion having a cylindrical portion and a frusto-conical projection such that the cylindrical portion is configured to correspond to the inner diameter of the tubular portion of the proximal end of the elongated shaft member and the frusto-conical projection is configured to engage the inner surface of the flared portion of the proximal end of the elongated shaft member, and ii) a distal portion that is configured to engage the outer surface of the flared portion of the proximal end of the elongated shaft member and thread together with the proximal portion to cooperatively compress and secure the flared and tubular portions of the proximal end of the shaft member to form a sealing connection.
 
15. A method for retrieving or placing an implant from or at a placement location in a lumen of body, comprising:
providing a sheath having an elongated shaft member comprising at least one shaft member region of modified flexibility, an atraumatic distal end and a proximal end having a tubular portion, a flared portion having an inner surface and an outer surface, the atraumatic distal end being positioned opposite to the proximal end and configured to compress the implant to a reduced profile, the sheath further comprising a hub secured to the outside surface of the proximal end of the elongated shaft member, the hub having an opening that tapers from a proximal diameter greater than the inner diameter of the shaft member, and comprising: i) a proximal portion having a cylindrical portion and a frusto-conical projection such that the cylindrical portion is configured to correspond to the inner diameter of the tubular portion of the proximal end of the elongated shaft member and the frusto-conical projection is configured to engage the inner surface of the flared portion of the proximal end of the elongated shaft member, and ii) a distal portion that is configured to engage the outer surface of the flared portion of the proximal end of the elongated shaft member and thread together with the proximal portion to cooperatively compress and secure the flared and tubular portions of the proximal end of the shaft member to form a sealing connection;
introducing a cystoscope through at least one lumen of the shaft member;
advancing the sheath and cystoscope through the lumen of the body; and
retrieving or releasing the implant via relative movement with the sheath.