WO2008044080A2 - Securing appliance for tendon grafts - Google Patents

Securing appliance for tendon grafts Download PDF

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Publication number
WO2008044080A2
WO2008044080A2 PCT/GR2007/000053 GR2007000053W WO2008044080A2 WO 2008044080 A2 WO2008044080 A2 WO 2008044080A2 GR 2007000053 W GR2007000053 W GR 2007000053W WO 2008044080 A2 WO2008044080 A2 WO 2008044080A2
Authority
WO
WIPO (PCT)
Prior art keywords
appliance
tendon
securing
hole
screw
Prior art date
Application number
PCT/GR2007/000053
Other languages
French (fr)
Other versions
WO2008044080A3 (en
Inventor
George Stefanoudakis
Original Assignee
George Stefanoudakis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by George Stefanoudakis filed Critical George Stefanoudakis
Publication of WO2008044080A2 publication Critical patent/WO2008044080A2/en
Publication of WO2008044080A3 publication Critical patent/WO2008044080A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/044—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors with a threaded shaft, e.g. screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0817—Structure of the anchor
    • A61F2002/0823—Modular anchors comprising a plurality of separate parts
    • A61F2002/0829—Modular anchors comprising a plurality of separate parts without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0817—Structure of the anchor
    • A61F2002/0823—Modular anchors comprising a plurality of separate parts
    • A61F2002/0835—Modular anchors comprising a plurality of separate parts with deformation of anchor parts, e.g. expansion of dowel by set screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0817—Structure of the anchor
    • A61F2002/0841—Longitudinal channel for insertion tool running through the whole tendon anchor, e.g. for accommodating bone drill, guidewire
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0847—Mode of fixation of anchor to tendon or ligament
    • A61F2002/0858—Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0876—Position of anchor in respect to the bone
    • A61F2002/0888—Anchor in or on a blind hole or on the bone surface without formation of a tunnel

Definitions

  • This invention relates to a securing appliance for tendon grafts which can be used to connect tendon grafts in orthopaedic operations without injuring or shearing the tendon grafts.
  • the most common way of securing tendon grafts to bones in orthopaedic operations is through screws or staples.
  • These methods suffer from a number of disadvantages, such as (a) the tendon is sheared by the threaded screw, (b) the tendon slips along the securing appliance, which results in loosening of the grip of the joint (e.g. knee) applied by the securing appliance, and (c) crushing and damaging of the tendon graft, caused by the rotation of the screw on the body of the graft.
  • Fig. 1 shows the securing appliance for tendon grafts in accordance with the present invention which comprises of a part of the appliance (part 1 in fig.l, which is depicted also in figs 2 and 5), which passes through a hole which has been drilled into the bone and has the tendon on its outside surface.
  • the graft passes through the hole which has been drilled by the surgeon on the upper part of the bone and a screw is applied to widen the hole and secure firmly the graft onto the bone, while at the same time protecting the graft from the rotation of the screw (part 2 in fig.l, which is also depicted in figs.3 and 6).
  • the embodiment of the tendon graft securing appliance shown in the figures comprises of two parts.
  • the first part (part 1 in fig.l, fig.2, fig.5) is an outer housing shaped as part of a cylinder, as needed to apply pressure on the graft.
  • the diameter varies from 2 to 15 millimeters and its length varies from 15 to 45 millimeters.
  • the second part is screw shaped (part 2 in fig.l, fig.3, fig.6) which is smaller at its tailing end and has a treaded hole at its other end and along its length to use with a protractor to push into or an extractor to pull the part out of the hole in the bone.
  • the first part of the appliance On the outside surface of the first part of the appliance (fig.2) and in a perpendicular direction to the longitudinal axis there are at least three rings (3 in fig.2) for sinking the tendon into the bone, which have blunt edges (in contrast to the threads of the screw) for the protection of the tendon graft.
  • At one end of the first part of the appliance there is a conical ending (5 in fig.2) which allows for easy insertion of the appliance into the hole which has been drilled into the bone.
  • the second part of the tendon graft securing appliance is a screw which consists of its body (8 in fig.3), the thread (9 in fig.3), the smaller diameter tail end (10 in fig.3), the head is cut at an angle (11 in fig.3) and a driver hole (12 in fig.3) to use with a protractor or an extractor.
  • the head is cut at an angle to the longitudinal axis of the part, so as to when the graft is screwed into the bone and the screw has sunk into the bone hole there is no part of the screw remaining above the outer surface of the bone.

Abstract

The securing appliance for tendon grafts comprises of a part in the shape of a part of a cylinder, with rings on the outer surface for securing the tendon graft and screw threads on the inner surface, and a screw, with a hole cut at an angle to the longitudinal axis of the part and a smaller diameter tail with a threaded hole to use with a protractor or an extractor. The appliance can be used in securing grafts (tendon etc) in orthopaedic operations (knee etc).

Description

SECURING APPLIANCE FOR TENDON GRAFTS
This invention relates to a securing appliance for tendon grafts which can be used to connect tendon grafts in orthopaedic operations without injuring or shearing the tendon grafts. The most common way of securing tendon grafts to bones in orthopaedic operations is through screws or staples. These methods suffer from a number of disadvantages, such as (a) the tendon is sheared by the threaded screw, (b) the tendon slips along the securing appliance, which results in loosening of the grip of the joint (e.g. knee) applied by the securing appliance, and (c) crushing and damaging of the tendon graft, caused by the rotation of the screw on the body of the graft.
The advantage of this invention is the ability to compress and secure the graft on the bone without shearing or crushing it by the screw, as the securing screw does not rotate on the graft itself, but on a part of the appliance. Fig. 1 shows the securing appliance for tendon grafts in accordance with the present invention which comprises of a part of the appliance (part 1 in fig.l, which is depicted also in figs 2 and 5), which passes through a hole which has been drilled into the bone and has the tendon on its outside surface. The graft passes through the hole which has been drilled by the surgeon on the upper part of the bone and a screw is applied to widen the hole and secure firmly the graft onto the bone, while at the same time protecting the graft from the rotation of the screw (part 2 in fig.l, which is also depicted in figs.3 and 6).
The embodiment of the tendon graft securing appliance shown in the figures comprises of two parts. The first part (part 1 in fig.l, fig.2, fig.5) is an outer housing shaped as part of a cylinder, as needed to apply pressure on the graft. The diameter varies from 2 to 15 millimeters and its length varies from 15 to 45 millimeters. The second part is screw shaped (part 2 in fig.l, fig.3, fig.6) which is smaller at its tailing end and has a treaded hole at its other end and along its length to use with a protractor to push into or an extractor to pull the part out of the hole in the bone. On the outside surface of the first part of the appliance (fig.2) and in a perpendicular direction to the longitudinal axis there are at least three rings (3 in fig.2) for sinking the tendon into the bone, which have blunt edges (in contrast to the threads of the screw) for the protection of the tendon graft. On the inside surface of the first part of the appliance and in a transverse direction there are multiple indentations (4 in fig.2), which allow screwing of the screw, the second part of the appliance used, to secure the graft without damaging it during application. At one end of the first part of the appliance there is a conical ending (5 in fig.2) which allows for easy insertion of the appliance into the hole which has been drilled into the bone.
At the other end of the first part of the appliance there is a dented protrusion (6 in fig.2) for ease of use, whose outside teeth can be detached at the end of the operation with the use of a dent (7 in fig.2) which exists on the inside surface of the part.
The second part of the tendon graft securing appliance is a screw which consists of its body (8 in fig.3), the thread (9 in fig.3), the smaller diameter tail end (10 in fig.3), the head is cut at an angle (11 in fig.3) and a driver hole (12 in fig.3) to use with a protractor or an extractor. The head is cut at an angle to the longitudinal axis of the part, so as to when the graft is screwed into the bone and the screw has sunk into the bone hole there is no part of the screw remaining above the outer surface of the bone.

Claims

1. Securing appliance for tendon grafts comprising of a part in the shape of a part of a cylinder and a screw. This appliance is inserted into a hole of a bone having a tendon graft on its circumference up to the opening of the hole.
2. The part of the appliance which exerts pressure on the tendon graft according to claim 1 is characterised by transverse rings on its outer surface, with blunt edges.
3. The part of the appliance which exerts pressure on the tendon graft according to claims 1 and 2 is characterised by transverse indentations on the inner surface of the appliance.
4. The part of the appliance which exerts pressure on the tendon graft according to claims 1 and 2 is characterised by a conical ending.
5. The part of the appliance which exerts pressure on the tendon graft according to claims 1 and 2 is characterised by a dented protrusion on the other end of the appliance.
6. The expansion screw for securing the tendon grafts according to claim 1 is characterised by its body, by treads with blunt edges, by a smaller diameter tail end, by a hole cut at an angle to the longitudinal axis of the part and by a driver hole to use with a protractor or an extractor.
7. The expansion screw for securing the tendon grafts according to claims 1 and 6 is characterised by a hole cut at an angle to the longitudinal axis of the part and a smaller diameter tail end.
PCT/GR2007/000053 2006-10-12 2007-10-12 Securing appliance for tendon grafts WO2008044080A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR20060100566 2006-10-12
GR20060100566A GR20060100566A (en) 2006-10-12 2006-10-12 Tendon grafts securing device.

Publications (2)

Publication Number Publication Date
WO2008044080A2 true WO2008044080A2 (en) 2008-04-17
WO2008044080A3 WO2008044080A3 (en) 2008-09-12

Family

ID=39283239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GR2007/000053 WO2008044080A2 (en) 2006-10-12 2007-10-12 Securing appliance for tendon grafts

Country Status (2)

Country Link
GR (1) GR20060100566A (en)
WO (1) WO2008044080A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632748A (en) * 1993-06-14 1997-05-27 Linvatec Corporation Endosteal anchoring device for urging a ligament against a bone surface
EP1070482A2 (en) * 1999-07-19 2001-01-24 Arthrotek, Inc. Apparatus and method for tibial fixation of soft tissue
US6579295B1 (en) * 2000-09-25 2003-06-17 Robert S. Supinski Tendon anchors
EP1491162A2 (en) * 2003-06-27 2004-12-29 DePuy Mitek, Inc. A graft fixation device
US20060149258A1 (en) * 2004-12-14 2006-07-06 Sousa Joaquim P G Surgical tool and method for fixation of ligaments
US7083647B1 (en) * 1996-11-27 2006-08-01 Sklar Joseph H Fixation screw, graft ligament anchor assembly, and method for securing a graft ligament in a bone tunnel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6533816B2 (en) * 1999-02-09 2003-03-18 Joseph H. Sklar Graft ligament anchor and method for attaching a graft ligament to a bone

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632748A (en) * 1993-06-14 1997-05-27 Linvatec Corporation Endosteal anchoring device for urging a ligament against a bone surface
US7083647B1 (en) * 1996-11-27 2006-08-01 Sklar Joseph H Fixation screw, graft ligament anchor assembly, and method for securing a graft ligament in a bone tunnel
EP1070482A2 (en) * 1999-07-19 2001-01-24 Arthrotek, Inc. Apparatus and method for tibial fixation of soft tissue
US6579295B1 (en) * 2000-09-25 2003-06-17 Robert S. Supinski Tendon anchors
EP1491162A2 (en) * 2003-06-27 2004-12-29 DePuy Mitek, Inc. A graft fixation device
US20060149258A1 (en) * 2004-12-14 2006-07-06 Sousa Joaquim P G Surgical tool and method for fixation of ligaments

Also Published As

Publication number Publication date
WO2008044080A3 (en) 2008-09-12
GR20060100566A (en) 2008-05-21

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