Soft tissue repair material fixation apparatus and method

• US 20030105477A1
• Filed: 01/03/2003
• Published: 06/05/2003
• Est. Priority Date: 01/28/2000
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Inventors: Schwartz, Herbert E., Plouhar, Pamela
• Granted Patent: US 7,172,606 B2
• Time in Patent Office: Days
• US Class Current: 606/151
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 2017/0646 for insertion into cartillege, e.g. meniscus
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2002/30115 circular-O-shaped
• CPC Class Codes: A61F 2002/30179 X-shaped
• CPC Class Codes: A61F 2002/30225 Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30233 Stepped cylinders, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/30299 umbrella-shaped or mushroom-shaped
• CPC Class Codes: A61F 2002/30477 using sharp protrusions, e.g. spikes, for anchoring into connecting prosthetic part
• CPC Class Codes: A61F 2002/30751 for attaching cartilage scaffolds to underlying bone
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30879 Ribs
• CPC Class Codes: A61F 2002/30881 Circumferential ribs, flanges or fins
• CPC Class Codes: A61F 2002/30891 Plurality of protrusions
• CPC Class Codes: A61F 2002/30892 parallel
• CPC Class Codes: A61F 2220/0008 : Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0058 : X-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0093 : Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2310/00365 : Proteins; Polypeptides; Degradation products thereof

Abstract

An apparatus for use in affixing material to a location under repair includes a material retention member and an anchor. The anchor is configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end. The anchor also includes one or more raised ribs. The material retention member extends radially from the first end of the anchor in a plurality of directions, the material retention member including at least one contact surface adapted to exert a retention force on material that is interposed between the material retention device and the bone tissue.

Claims

1. An apparatus for use in affixing material to a location under repair, the apparatus comprising:

an anchor configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end, the anchor having an exterior surface, the exterior surface including one or more raised ribs; and

a material retention member extending radially from the anchor in a plurality of directions, the material retention member including at least one contact surface adapted to exert a retention force on material that is interposed between the material retention member and the bone tissue,

wherein the one or more raised ribs extend axially along a surface of the anchor.

2. A method of effecting therapeutic reparation of a location of the body comprising:

a) disposing soft tissue repair material in the location of the body; and

b) securing an anchor of a fixation device into a cavity in bone tissue proximate the location of the body, the anchor having a first end and a second end, the fixation device further comprising a material retention member extending radially from the anchor in a plurality of directions, such that at least one contact surface of the material retention member engages a portion of the soft tissue repair material that is interposed between the material retention device and the bone tissue.

3. The method of claim 2 wherein step a) further comprises disposing a matrix in the location and step b) further comprises securing the anchor of the fixation device such that the at least one contact surface engages a portion of the matrix that is interposed between the material retention device and the bone tissue.

4. The method of claim 2 wherein the anchor includes a plurality of raised ribs and wherein step b) further comprises securing the anchor within the cavity by advancing the anchor into the cavity until at least a portion of the plurality of raised ribs contacts the bone tissue.

5. The method of claim 2 wherein the anchor includes a shoulder portion extending from a location on the anchor between the first and second end toward a location proximate the first end of the anchor, and wherein step b) further comprises securing the anchor within the cavity by advancing the anchor into the cavity until at least a portion of the shoulder contacts the bone tissue.

6. The method claim 2 further comprising the step of:

d) securing a second anchor of a second fixation device into a second cavity in bone tissue proximate the location of the body, the second anchor having a first end and a second end, the second fixation device further comprising a second material retention member extending radially from the anchor in a plurality of directions, such that at least one contact surface of the material retention member engages a second portion of the soft tissue repair material that is interposed between the material retention device and the bone tissue.

7. An assembly for use in effecting therapeutic reparation of a location of the body comprising, the assembly comprising:

a quantity of soft tissue repair material; and

a fixation device, the fixation device comprising

an anchor configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end; and

a material retention member extending radially from the anchor in a plurality of directions, the material retention member including at least one contact surface engaging at least a portion of the quantity of soft tissue repair material,

wherein the anchor further comprises raised ribs extending from an outer surface thereof, and

wherein the one or more raised ribs extend axially along the outer surface of the anchor.