GB2443795A - Lead for use in orthopaedic surgery - Google Patents

Lead for use in orthopaedic surgery Download PDF

Info

Publication number
GB2443795A
GB2443795A GB0619832A GB0619832A GB2443795A GB 2443795 A GB2443795 A GB 2443795A GB 0619832 A GB0619832 A GB 0619832A GB 0619832 A GB0619832 A GB 0619832A GB 2443795 A GB2443795 A GB 2443795A
Authority
GB
United Kingdom
Prior art keywords
wire
lead
lead according
channel
tool
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0619832A
Other versions
GB0619832D0 (en
GB2443795B (en
Inventor
Vagn-Erik Dall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalmatic AS
Original Assignee
Dalmatic AS
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 Dalmatic AS filed Critical Dalmatic AS
Priority to GB0619832A priority Critical patent/GB2443795B/en
Publication of GB0619832D0 publication Critical patent/GB0619832D0/en
Priority to PCT/GB2007/003808 priority patent/WO2008041009A1/en
Publication of GB2443795A publication Critical patent/GB2443795A/en
Application granted granted Critical
Publication of GB2443795B publication Critical patent/GB2443795B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/842—Flexible wires, bands or straps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1637—Hollow drills or saws producing a curved cut, e.g. cylindrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1796—Guides or aligning means for drills, mills, pins or wires for holes for sutures or flexible wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
    • A61B17/848—Kirschner wires, i.e. thin, long nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8897—Guide wires or guide pins
    • 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
    • A61B2017/0404—Buttons

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Neurology (AREA)
  • Surgical Instruments (AREA)

Abstract

The lead comprises a length of wire formed with at least one channel 4 extending longitudinally along its outer surface. Normally, a plurality of channels are provided each of which will preferably extend parallel to the wire axis. The lead can be used as a guide wire for a reamer.

Description

I
LEADS FOR USE IN ORTHOPAEDIC SURGERY
This invention relates to orthopaedic surgery and particularly to surgery in which a fractured bone is fixed using an element traversing the fracture. In such surgery the fixation element must be installed in a hole carefully and accurately located relative to the fracture and the external forces acting thereon.
In preparing a fractured bone for installation of a fixation element the hole for receiving the element is first defined by a lead which is driven through the bone and across the fracture. The lead will normally be a wire which can be driven through the bone and related tissue without difficulty. A hole is then cut using a suitable tool such as a drill or reamer which has an axial passage therethrough enabling it to follow the path of the wire that remains in the bone.
The tool is then withdrawn, and the fixation element installed, once again around the lead. Once the fixation element is installed, the lead can be removed. It is sometimes appropriate to remove the lead before installation of the fixation element.
Use of a lead in surgical operations of the kind described above is essential. However, as the hole for the fixation element has to be made very accurately, and normally in limited space, there is a continuing problem in removing debris in the various stages of hole formation. Further, debris can cause the tool and lead to jam. Once the lead is in place, the cutting tool, drill or reamer, will of course also create more debris and some of this will be forced into the axial passage containing the wire which is guiding the tool.
This debris can cause the tool and lead to lock together, and if the drilling continues with the wire projecting ahead of the tool, the wire will be driven further into or through the bone in which it is fitted. This can create considerable complications in the surgical procedure.
Another disadvantage of the drilling tool jamming with the lead wire is that when the tool is withdrawn it often brings the lead wire with it. While this can be acceptable in some circumstances, generally surgeons prefer to leave the lead wire in place until the fixation element is finally installed. Only then is the lead wire withdrawn. Without it of course, there is no guide for the fixation element and the presence of the lead wire helps to ensure that the fixation element is accurately located. In many operations it is desirable that the lead remains in place until the fixation element is finally instaf led.
According to the present invention a lead for use in orthopaedic surgery comprises a length of wire formed with at least one channel extending longitudinally along its outer surface. NorrnaUy, a plurality of channels are provided. However many are used, it or each will preferably extend parallel to the wire axis. The wire will normally be at least 30 cms long, and typically has a diameter in the range of I to 4 millimetres. It is normally formed in stainless steel or titanium. If titanium is used, the other tools used in the operation should also be of titanium. The same applies to stainless steel.
The wire of a lead according to the invention will normally have a sharpened end, and the grooves may extend into and along the surface of the sharpened end, substantially to the tip. If they do, the channel walls can diverge towards the tip to facilitate the cutting process. This is though not essential and it will be appreciated of course that the channel or channels by virtue of its or their depth, will partially extend into any tapered section.
As a lead according to the invention is driven into the fractured bone, the debris created is carried away along the channel or channels. This effect is enhanced when the lead is rotated as it is driven through the bone. In the next stage, when the hole is cut for the fixation element, the lead of the invention reduces the risk of jamming between the drilling tool and the lead wire. Not only do the channels in the lead wire provide an escape path for debris forced into the axial passage in the tool, but debris in the channet or channels creates bodies which can rotate and act as bearings between the external surface of the wire and the internal surface of the axial passage in the tool, in this context it is desirable to form the channel or channels in the lead wire with a cross-section forming a circular arc, typically a semi-circle.
The invention will now be described by way of example and with reference to the accompanying drawings wherein: Figure 1 shows a perspective view of a section of a lead according to the invention; and Figure 2 shows the cross-section of a lead according to the invention within the body of a drill or reamer.
Figure 1 illustrates a straight length of stainless steel titanium wire 2, with four longitudinal channels 4 formed in its external surface, and extending longitudinally parallel to the wire axis. As can be seen, the wire 2 has a sharpened end 6, into which the channels extend. On the inclined surfaces of the sharpened end 6, the walls 8 of the channels diverge such that adjacent walls from adjacent channels meet before actually reaching the sharp tip 10 of the end. The channel edges 8 in combination with the sharp tip 10 facilitate the cutting process as the wire is driven through bone in a surgical procedure.
Figure 2 illustrates the lead wire of the invention in the second stage of a surgical operation, when it is acting as a guide for a reamer or drill. The body 12 of the reamer or drill will rotate relative to the wire 2, and some of the debris cut away by the reamer will enter the cylindrical space between the reamer body and the wire. As the stage progresses, debris built up in the channels 4 on the wire form a mobile mass which will move in a generally rotational motion within the channels, forming a bearing which spaces the reamer body 12 from the outer surface of the wire 2. This substantially reduces the risk of the reamer body locking with the wire and as a consequence, the wire can be left largely undisturbed as the hole is cut.
Additionally, this reduces the risk of the wire being withdrawn with the reamer or drill it

Claims (12)

1. A lead for use in orthopaedic surgery comprising a length of wire formed with at least one channel extending longitudinally along its outer surface.
2. A lead according to Claim I wherein the length of wire has a sharpened end.
3. A lead according to Claim 2 wherein said at least one channel continues in the surface of the sharpened end.
4. A lead according to Claim 3 wherein the walls of said at least one channel in the sharpened end diverge towards the tip of the end.
5. A lead according to any preceding Claim wherein said at least one channel extends parallel to the wire axis.
6. A lead according to any preceding Claim wherein the wire is formed with a plurality of said channels.
7. A lead according to any preceding Claim wherein the wire has a diameter in the range I to 4 mm.
8. A lead according to any preceding Claim wherein the wire is formed in one of stainless steel and titanium.
9. A lead according to any preceding Claim wherein the cross-section of said at least one channel is the arc of a circle.
10. A lead according to Claim 9 wherein the arc is a semicircle.
11. A lead according to any preceding Claim wherein the length of the wire is at least 30 cms.
12. A method of preparing a fractured bone for fixation using an element traversing the fracture, which method comprises driving a lead according to any preceding Claim through the bone and across the fracture; drilling a hole along the path defined by the wire and around the wire with a tool having an axial passage for the wire; and withdrawing the tool while leaving the wire in place.
GB0619832A 2006-10-06 2006-10-06 Leads for use in orthopaedic surgery Expired - Fee Related GB2443795B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0619832A GB2443795B (en) 2006-10-06 2006-10-06 Leads for use in orthopaedic surgery
PCT/GB2007/003808 WO2008041009A1 (en) 2006-10-06 2007-10-08 Leads for use in orthopaedic surgery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0619832A GB2443795B (en) 2006-10-06 2006-10-06 Leads for use in orthopaedic surgery

Publications (3)

Publication Number Publication Date
GB0619832D0 GB0619832D0 (en) 2006-11-15
GB2443795A true GB2443795A (en) 2008-05-21
GB2443795B GB2443795B (en) 2011-04-13

Family

ID=37454151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0619832A Expired - Fee Related GB2443795B (en) 2006-10-06 2006-10-06 Leads for use in orthopaedic surgery

Country Status (2)

Country Link
GB (1) GB2443795B (en)
WO (1) WO2008041009A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266460A (en) * 1992-04-27 1993-11-03 Ibrahim Shuaib Extendable guide wire
WO1997046162A1 (en) * 1996-06-04 1997-12-11 Sklar Joseph H Apparatus and method for reconstructing ligaments

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257996A (en) * 1991-12-13 1993-11-02 Mcguire David A Surgical pin passer
FR2790658B1 (en) * 1999-03-09 2001-05-25 Orthomed Sa SET OF MEANS NECESSARY FOR THE SURGICAL REDUCTION OF SHOULDER INSTABILITIES
FR2841764B1 (en) * 2002-07-05 2005-05-20 Newdeal Sa SCREW OF OSTEOSYNTHESIS AND SELF-TAPPING AND SELF-FORWARD COMPRESSION
FR2860418B1 (en) * 2003-10-02 2005-12-16 Ct Pulse France INSTRUMENT FOR THE INSTALLATION OF INTERFERENCE SCREWS IN THE FIELD OF LIGAMENTOPLASTY
US8088128B2 (en) * 2004-03-25 2012-01-03 Depuy Mitek, Inc. Implantable cross-pin for anterior cruciate ligament repair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266460A (en) * 1992-04-27 1993-11-03 Ibrahim Shuaib Extendable guide wire
WO1997046162A1 (en) * 1996-06-04 1997-12-11 Sklar Joseph H Apparatus and method for reconstructing ligaments

Also Published As

Publication number Publication date
WO2008041009A1 (en) 2008-04-10
GB0619832D0 (en) 2006-11-15
GB2443795B (en) 2011-04-13

Similar Documents

Publication Publication Date Title
US10085782B2 (en) Bone screw
EP0432260B1 (en) Device for guiding an osteotome during osteotomy of long bones
US20080051793A1 (en) Drill-tap tool
US6884245B2 (en) Hardware for cutting bone cores
EP1528892B1 (en) A drill bit and method for producing a drill bit
US10045803B2 (en) Sacroiliac joint fusion screw and method
US6312432B1 (en) Bone drill
US9848891B2 (en) Tool and method for generating an undercut in a bone
EP2421450B1 (en) Tissue anchor insertion system
CN103096821A (en) Surgical nail
US9060827B2 (en) Tool for drilling bone tissue, particularly suitable for performing a sinus lift according to the summers technique or for the fitting of extra-short implants
US9579108B2 (en) Surgical drill bits
JP5731703B1 (en) Bone drilling device
CN1935095A (en) Device for removal of fastening means from human tissue
US10912573B2 (en) Intramedullary canal reamer
US6004321A (en) Cannulated screw retraction apparatus and method of retraction
KR102549687B1 (en) Easy Start Cannulated Bone Screw
GB2443795A (en) Lead for use in orthopaedic surgery
EP3376972B1 (en) Surgical tunneling instrument with expandable section
US20100324562A1 (en) Broaching punch and method of forming bone tunnels
US11701132B2 (en) Lateral cortex penetrator

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20191006