Patent ID: 8152791

Claim:
A medical assembly for implantation in a patient, comprising: a vascular access device, the vascular access device comprising a body portion having a fluid reservoir therein, and a connector tube for conveyance of a fluid between the reservoir and a vessel of a patient, said connector tube having a length, wherein a first segment of said length extends outwardly from said body portion to a second segment, said second segment having a greater diameter than said first segment; a catheter having first and second ends, said catheter sized such that said first end is receivable over said second segment of said connector tube onto said first segment, and said second end is extendable into said vessel for conveyance of said fluid; and a locking mechanism structured for maintaining a position of said catheter first end on said first segment of said connector tube, said locking mechanism comprising a first lock member and a second lock member, said first lock member comprising an elongated body having an outer surface and having an axial passageway extending therethrough, said outer surface having at least one slot formed therealong, said axial passageway of said first lock member dimensioned such that said connector tube with said catheter received thereover is receivable therethrough and said second segment of said connector tube is axially extendable in said passageway beyond said slot; said second lock member comprising an elongated body having an outer surface and an inner surface, and having an axial passageway extending therethrough, said second lock member dimensioned such that at least a portion of said outer surface of said first lock member having said at least one slot formed therealong is receivable in said second lock member axial passageway, said second lock member having at least one tab extending radially into said second lock member axial passageway from said inner surface, said at least one tab sized and shaped to fit into said at least one slot to form a locking connection between said first and second lock members, and for inhibiting a disengagement of said connector tube and said catheter.