Flat Shaft Fasteners

• US 20090043342A1
• Filed: 09/04/2008
• Published: 02/12/2009
• Est. Priority Date: 03/28/2006
• Status: Abandoned Application

• Current Assignee: Yosef Freedland
• Original Assignee: Yosef Freedland
• Inventors: Freedland, Yosef
• Application Number:
  US12/204,796
• Publication Number:
  US 20090043342A1
• Time in Patent Office: Days
• US Class Current: 606/313
• 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 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/7266 with fingers moving radially outwardly
• CPC Class Codes: A61B 17/7275 with expanding cylindrical parts
• CPC Class Codes: A61B 17/88 Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices A61B17/7074 takes precedence
• CPC Class Codes: A61B 17/8869 Tensioning devices
• CPC Class Codes: A61B 17/8872 Instruments for putting said fixation devices against or away from the bone A61B17/7074, A61B17/808 take precedence
• CPC Class Codes: A61B 17/92 Impactors or extractors, e.g. for removing intramedullary devices insertion or extraction of artificial joints A61F2/4603
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0424 the separate member staying in the anchor after placement
• CPC Class Codes: A61B 2017/0433 the anchor or the separate member comprising threads, e.g. a set screw or a worm gear for moving spreading members
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2/3662 Femoral shafts
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4644 Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material bone material A61F2/28; disintegrating or milling devices B02C
• CPC Class Codes: A61F 2002/0829 without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
• CPC Class Codes: A61F 2002/0835 with deformation of anchor parts, e.g. expansion of dowel by set screw
• CPC Class Codes: A61F 2002/0858 Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone
• CPC Class Codes: A61F 2002/2835 : Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30062 : (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30092 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30331 : made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30354 : Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
• CPC Class Codes: A61F 2002/30364 : Rotation about the common longitudinal axis
• CPC Class Codes: A61F 2002/3037 : Translation along the common longitudinal axis, e.g. piston
• CPC Class Codes: A61F 2002/30405 : made by screwing complementary threads machined on the parts themselves
• CPC Class Codes: A61F 2002/30507 : using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/3052 : unrestrained in only one direction, e.g. moving unidirectionally
• CPC Class Codes: A61F 2002/30579 : with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/3611 : Heads or epiphyseal parts of femur
• CPC Class Codes: A61F 2002/3625 : Necks
• CPC Class Codes: A61F 2002/3631 : with an integral complete or partial peripheral collar or bearing shoulder at its base
• CPC Class Codes: A61F 2002/3652 : Connections of necks to shafts
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2210/0014 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2250/0067 : Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00131 : Tantalum or Ta-based alloys
• CPC Class Codes: A61F 2310/00149 : Platinum or Pt-based alloys

Abstract

Disclosed is an expanding fastener. The expanding fastener includes two walls configured to be inserted in a bore in a bone, said two walls include: one first wall having at least one first flat planar wall portion, and one second wall. The expanding fastener further including a shaft having one flat planar shaft portion configured to slide along said one first flat planar wall portion, said shaft further having a shape configured to cause radial outward movement of at least one of said two walls during said sliding.

Claims

1. An expanding fastener, comprising:

i) two walls configured to be inserted in a bore in a bone, said two walls including;

one first wall having at least one first flat planar wall portion; and

one second wall, and

ii) a shaft having one flat planar shaft portion configured to slide along said one first flat planar wall portion, said shaft further having a shape configured to cause radial outward movement of at least one of said two walls during said sliding.

2. The expanding fastener according to claim 1, wherein at least one of said two walls is configured to secure against at least a portion of said bore in said bone following said radially outward movement.

3. The expanding fastener according to claim 2, wherein said one first wall includes a first spine configured to secure a portion of graft, disposed in said bore, against a portion of said bore.

4. The expanding fastener according to claim 3, wherein said graft comprises at least one of:

a biocompatible material;

an autograft;

an allograft; and

a zenograft.

5. The expanding fastener according to claim 3, wherein said first spine includes at least one first rib having a free end extending toward said second wall.

6. The expanding fastener according to claim 5, wherein said at least one first rib is configured to press a portion of soft tissue disposed in said bore, against a portion of said bore.

7. The expanding fastener according to claim 3, wherein said one second wall includes a second spine.

8. The expanding fastener according to claim 7, wherein said second spine includes at least two ribs extending therefrom.

9. The expanding fastener according to claim 8, wherein said at least two ribs comprise:

at least one first rib extending from a first side of said second spine; and

at least one second rib extending from a second side of said second spine.

10. The expanding fastener according to claim 3, wherein prior to said radially outward movement at least a portion of said one flat planar shaft surface is parallel to said at least one first flat planar wall.

11. The expanding fastener according to claim 3, wherein following said radial outward movement at least a portion of said one flat planar shaft surface is parallel to said at least one first flat planar wall.

12. The expanding fastener according to claim 3, wherein following said radial outward movement at least a portion of said one first flat planar wall portion is parallel to said one flat planar shaft portion.

13. The expanding fastener according to claim 1, wherein said one first wall comprises at least one fold substantially along a longitudinal axis of said fastener.

14. The expanding fastener according to claim 1, wherein at least a portion of:

said one first wall; and

said one second wall,

are substantially radially continuous around said shaft.

15. The expanding fastener according to claim 1, including an elongate stabilizing cord projecting from said one first wall, said cord configured to stabilize the position of said one first wall, during said radial outward movement.

16. The expanding fastener according to claim 15, including an elongate shaft cord projecting from said shaft, said cord being configured to pull said shaft during said radial outward movement.

17. A method for compressing an in vivo tissue, the method comprising:

a) boring a bore through a surface of an in vivo tissue;

b) positioning at least two walls in said bore;

c) linearly sliding a flat shaft between said at least two walls; and

d) causing at least a portion of at least one of said at least two walls to move laterally outward and press against at least a portion of said bore.

18. A fastening device, comprising:

a first spine spaced a distance from a second spine;

said first spine having at least one first transverse rib extending toward said second spine,

said second spine having at least one second transverse rib extending toward said first spine and spaced a distance from said at least one first rib; and

an elongate insertion member insertable into said space between said first spine and said second spine, thereby expanding said first and second spines laterally outwardly.