公开(公告)号：US07005026B2

公开(公告)日：2006-02-28

申请号：US10298116

申请日：2002-11-15

申请人： John R Brustad ,  Payam Adlparvar ,  Wassim R. Aliahmad ,  Canh T. Tran ,  Nabil Hilal ,  Boun Pravong ,  Raffi S. Pinedjian ,  Charles C Hart

发明人： John R Brustad ,  Payam Adlparvar ,  Wassim R. Aliahmad ,  Canh T. Tran ,  Nabil Hilal ,  Boun Pravong ,  Raffi S. Pinedjian ,  Charles C Hart

IPC分类号： B65H81/00

CPC分类号： A61M25/0012 ,  A61B17/3415 ,  A61B2017/00526 ,  A61M25/0045 ,  A61M25/005 ,  A61M25/0662 ,  B29C47/0023 ,  B29C47/004 ,  B29C47/0064 ,  B29C47/025 ,  B29C47/027 ,  B29C53/60 ,  B29C61/006 ,  B29L2023/00

摘要： A releasable mechanism such as a cap is adapted for use with an access sheath having an elongate tube and a handle structure disposed at a proximal end of the tube. The releasable mechanism is sized and configured to fit the handle structure, which is shaped like the bell of a horn, to further facilitate use with surgical instrumentation. The releasable mechanism may operate as a separate cap that snaps onto the handle structure to provide access pathways to the sheath. The releasable mechanism may also be disposed at a proximal end of a surgical instrument to be introduced into the access sheath such that it may be interlocked with the sheath. In a method of manufacturing a kink-resistant sheath, a wire is initially coated with a plastic material, the coated wire is then wrapped around a mandrel forming a plurality of windings, and the wound coated wire is heated until the plastic material melts and bonds the windings to form a wire-reinforced sheath. The plastic material is preferably polyurethane but may be a thermoplastic, a thermoset or any plastic material having hard and/or soft durometer. The wound coated wire may be heated by capturing the windings within a shrink tube or compressing the windings in a mold and heating the windings until the sheath is formed. In another aspect of the invention, a mandrel is used as part of an extrusion process. In another aspect of the invention, another coating or outside layer could be formed over the spring reinforcement by dipping in a solvent based solution. In yet another embodiment of the invention, a braid such as a polyester braid may be used instead of or in addition to the coil spring to form a kink-resistant sheath.

公开(公告)号：US07534317B2

公开(公告)日：2009-05-19

申请号：US11319870

申请日：2005-12-28

申请人： John R. Brustad ,  Payam Adlparvar ,  Wassim R. Aliahmad ,  Canh T. Tran ,  Nabil Hilal ,  Boun Pravong ,  Raffi S. Pinedjian ,  Charles C. Hart

发明人： John R. Brustad ,  Payam Adlparvar ,  Wassim R. Aliahmad ,  Canh T. Tran ,  Nabil Hilal ,  Boun Pravong ,  Raffi S. Pinedjian ,  Charles C. Hart

IPC分类号： B65H81/00 ,  B32B37/00

CPC分类号： A61M25/0012 ,  A61B17/3415 ,  A61B2017/00526 ,  A61M25/0045 ,  A61M25/005 ,  A61M25/0662 ,  B29C47/0023 ,  B29C47/004 ,  B29C47/0064 ,  B29C47/025 ,  B29C47/027 ,  B29C53/60 ,  B29C61/006 ,  B29L2023/00

摘要： A method of manufacturing a kink resistant sheath includes the steps of coating a wire with a plastic material to form an inner tube, placing a braid over the inner tube, applying a spring reinforcement over the braid and applying a second layer of plastic material over the assembly to form an outer tube of a braided reinforced sheath. The plastic material is preferably polyurethane but may be a thermoplastic, thermoset or any plastic material having hard and/or soft durometer.

摘要翻译： 制造耐扭结护套的方法包括以下步骤：用塑料材料涂覆线以形成内管，将编织物放置在内管上方，在编织物上施加弹簧加强件，并将第二层塑料材料施加在 组装形成编织增强护套的外管。 塑料材料优选为聚氨酯，但可以是热塑性，热固性或具有硬和/或软硬度的任何塑料材料。