Anatomical cavity access sealing condit

• US 5,741,234 A
• Filed: 07/16/1996
• Issued: 04/21/1998
• Est. Priority Date: 07/16/1996
• Status: Expired due to Fees

• Current Assignee: Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: A-Med Systems, Inc.
• Inventors: Aboul-Hosn, Walid Nagib
• Primary Examiner(s): Rimell, Sam
• Assistant Examiner(s): Yeh, Luke
• Application Number:
  US08/680,929
• Time in Patent Office: 644 Days
• Field of Search: 604/167, 604/165, 604/174, 604/178, 604/104, 604/105, 604/106, 604/107
• US Class Current: 604/174
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61B 2090/08021 of the patient or his organs

Abstract

A sealing conduit for use with a portal formed on the body which enable surgical, diagnostic and assistive instruments to be inserted into the body during least invasive medical procedures. The sealing conduit includes an elongated cylindrical member with a continuous central lumen therebetween. A flexible annular lip structure is attached or formed on the inside surface of the cylindrical member which is folded in a retracted position inside the cylindrical member or extended through the distal opening thereof. During use, a penetrating member is disposed inside the cylindrical member which is moved downward to forcibly move the annular lip structure from the retracted to the extended position. When the annular lip structure is in the extended position, distal end of the sealing conduit is located just inside the desired vessel or conduit and outward migration of the sealing conduit through the portal is prevented. An upper flexible ring is disposed around the cylindrical member which is moved by downward thereon by a plurality of suture lines. When the suture lines are pulled, the annular lip structure and flexible ring are squeezed together to securely hold and create a seal around the portal.

Claims

1. A sealing member, comprising:

a. a cylindrical member, said cylindrical member having a distal end and a proximal end with a continuous, longitudinally aligned central lumen formed therein;

b. an annular lip structure formed on said distal end of said cylindrical member, said annular lip structure capable of being disposed between a retracted position inside said cylindrical member and an extended position on said distal end of said cylindrical member, said annular lip structure capable of preventing the outward migration of said cylindrical member in a portal when said cylindrical member is inserted therein and said annular lip structure is extended from said cylindrical member;

c. a removable penetrating member longitudinally disposed inside said cylindrical member, said penetrating member capable of supporting said cylindrical member when said cylindrical member is inserted into a portal said penetrating member being an elongated structure with a distal end and a relieved area formed adjacent thereto said relieved area having an ohter shape and being located on said penetrating member so that said annular lip structure may be disposed in a retracted position inside said cylindrical member within said relieved area when said penetrating member is disposed inside said cylindrical member, said penetrating member also being sufficient size so that said annular lip structure disposed inside said cylindrical member may be forcibly moved outward from said cylindrical member when said penetrating member is moved longitudinally downward inside said cylindrical member,

d. An upper sealing member capable of moving downward longitudinally along said cylindrical member and pressed against the outside surface of the tissue surrounding a portal formed therein, said upper sealing member capable of sealing said portal and preventing the inward migration of said cylindrical member through the portal; and

,

e. A moving means capable of selectively moving said annular lip structure from a restricted position to an extended position from said cylindrical member, said moving means also capable of moving said upper sealing member along said cylindrical member to force said upper sealing member and said annular lip structure together to securely hold and form a seal around said portal.

2. A sealing conduit, as recited in claim 1, wherein said upper sealing member is a flexible disk having a central bore formed therein, said central bore being complimentary in shape and size with said cylindrical body so that said flexible disk may selectively move longitudinally along said cylindrical member.

3. A sealing conduit, as recited in claim 2, wherein said moving means is a plurality of suture lines disposed between said annular lip structure and said upper sealing means, each said suture line being connected between said annular lip structure and said upper sealing means so that when said suture lines are pulled, said upper sealing means is moved longitudinally along said cylindrical member to force said upper sealing means and said annular lip structure against the tissue surrounding said portal.

4. A sealing member, as recited in claim 1, further including a valve member attached to said cylindrical member, said valve member capable of sealing said central lumen in said cylindrical member and enabling said penetrating member to move longitudinally inside said cylindrical member.

5. A sealing conduit, as recited in claim 4, wherein said valve member is a replaceable flat disk with a slit opening formed therein, said slit opening having a size and shape complimentary to the outside size and shape of an instrument inserted through said cylindrical member to form a seal therearound.

6. Method of attaching a conduit to a portal formed in anatomical tissue, comprising the following steps:

a. selecting a sealing conduit, said sealing conduit includes a cylindrical member with a retractable and extendable, outward biased, annular lip structure, a penetrating member, disposed inside said cylindrical member, said penetrating member being an elongated structure with a distal end and a relieved area formed adjacent thereto, said relieved area having an outer shape and being located on said penetrating member so that said annular lip structure may be disposed in a retracted position inside said cylindrical member within said relieved area when said penetrating member is disposed inside said cylindrical member, said penetrating member also being sufficient size so that said annular lip structure disposed inside said cylindrical member may be forcibly moved outward from said cylindrical member when said penetrating member is moved longitudinally downward inside said cylindrical member, an upper sailing means capable of being moved longitudinally over said cylindrical member, and a moving means for forcibly moving said upper sealing means along said cylindrical member and forcing said upper sealing means and said annular lip structure together on opposite sides of the portal to hold said cylindrical member in position in the portal and to create a seal therearound during use;

b. inserting said sealing conduit through a portal;

c. using said moving means to force said annular lip structure and said upper sealing means together to securely hold said sealing conduit in the portal and to create a seal therearound; and

,

d. removing said penetrating member from said cylindrical member to provide access through the portal.