Pre-loaded suture anchor with rigid extension

• US 5,707,394 A
• Filed: 08/22/1996
• Issued: 01/13/1998
• Est. Priority Date: 02/07/1996
• Status: Expired due to Term

• Current Assignee: Linvatec Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: Bristol-Myers Squibb Company
• Inventors: Miller, Peter C., Fucci, Joseph
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): PHAM, THUY D
• Application Number:
  US08/704,480
• Time in Patent Office: 509 Days
• Field of Search: 606/232, 606/145, 606/148, 606/75, 606/73, 606/104, 606/139
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0483 Hand-held instruments for holding sutures A61B17/0469 takes precedence; other holders for needles or sutures A61B17/06061; surgical forceps A61B17/28; surgical pincettes A61B17/30
• CPC Class Codes: A61B 17/0485 Devices or means, e.g. loops, for capturing the suture thread and threading it through an opening of a suturing instrument or needle eyelet
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0454 the anchor being crimped or clamped on the suture
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter

Abstract

A method and apparatus for facilitating use of a threaded suture anchor in combination with a reusable cannulated anchor driver. The device enables a suture anchor to be preassembled with a suture so that a user need not assemble a suture anchor with suture immediately prior to use. The preassembled anchor/suture is provided with a suture stiffening or support means by which the free ends of the suture may be easily threaded into the axial bore of a cannulated driver. The stiffening means may comprise an elongated rod abuttingly joined to the free ends of suture (threaded through a suture anchor) and secured thereto by a length of shrinkable tubing frictionally engaging the free ends of the suture and one end of the rod.

Claims

1. A pre-loaded suture anchor assembly for attachment to an anchor driver comprising:

an anchor body having a suture receiving means for receiving suture;

a suture having predetermined length and having a first end and a second end, said suture received in said suture receiving means and extending therefrom;

an elongated, substantially straight rod, having a proximal end and a distal end; and

an elongated, tubular connecting member for engaging the proximal end of said elongated rod and said first or second suture ends.

2. A pre-loaded suture anchor assembly according to claim 1 wherein said elongated, tubular connecting member is a hollow, elongated tubular sleeve having an axial bore with open distal and proximal ends for receiving and frictionally engaging said ends of said suture in the proximal end of said sleeve and said end of said rod in the distal end of said sleeve.

3. A pre-loaded suture anchor assembly according to claim 1 wherein said connecting member frictionally engages predetermined portions of the end of said elongated rod and said suture ends.

4. A pre-loaded suture anchor assembly according to claim 1 wherein said connecting member comprises a heat-shrinkable tube.

5. A method of producing a pre-loaded suture anchor assembly comprising a suture anchor for securing selected tissue thereto, said assembly for being received within and adjacent one end of a throughbore extending entirely through a cannulated suture anchor driver comprising the steps of:

providing a suture anchor having a suture receiving means for receiving suture;

providing a predetermined length of suture;

engaging said predetermined length of suture with said suture receiving means so that at least one end of said suture extends from said suture anchor to enable said suture to secure selected tissue thereto;

providing an elongated, substantially straight rod having a proximal end and a distal end;

providing an elongated tubular connecting member having an axial bore with open distal and proximal ends;

placing said at least one end of said suture into one end of said connecting member and said proximal end of said rod into the other end of said connecting member;

causing said tubular connecting member to engage said at least one end of said suture and said proximal end of said rod.

6. A method according to claim 5 wherein said tubular connecting means is shrinkable tubing and further comprising the step of:

activating said tubular connecting means in order to cause it to frictionally engage said suture.

7. A method according to claim 5 further comprising the steps of:

providing a cannulated anchor driver having an axial bore and an anchor engaging means at its distal end for engaging said anchor in order to enable it to be driven at a predetermined work site;

placing said distal end of said elongated rod into the distal end of said axial bore and through the axial bore of said cannulated anchor driver;

pulling the assembly through the axial bore until the anchor is seated at the distal tip of the driver.

8. A method of enabling a user to load a pre-loaded suture anchor assembly into an elongated cannulated driver for driving a suture anchor comprising the steps of:

providing a pre-loaded suture anchor assembly comprising a suture anchor, a predetermined length of suture having a predetermined proximal portion thereof contiguous to said suture anchor and at least one distal unattached end portion, an elongated rod and an elongated connecting member for securing one end of said rod in an endwise manner to said at least one distal end portion of said suture;

providing a cannulated driver having an axially aligned throughbore entirely therethrough;

axially inserting said elongated rod into and through said throughbore of said cannulated driver sufficiently to pass said elongated rod entirely through said throughbore to enable it to be grasped by the user;

seating said suture anchor in the driver to enable it to be driven thereby; and

removing said connecting member and rod from said assembly.