GB2442706A - An intramedullary rod for the fixation of bone fractures - Google Patents

An intramedullary rod for the fixation of bone fractures Download PDF

Info

Publication number
GB2442706A
GB2442706A GB0619922A GB0619922A GB2442706A GB 2442706 A GB2442706 A GB 2442706A GB 0619922 A GB0619922 A GB 0619922A GB 0619922 A GB0619922 A GB 0619922A GB 2442706 A GB2442706 A GB 2442706A
Authority
GB
United Kingdom
Prior art keywords
rod
intramedullary
portions
material
bone
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.)
Withdrawn
Application number
GB0619922A
Other versions
GB0619922D0 (en
Inventor
Mohamed Khalid
Original Assignee
Mohamed Khalid
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 Mohamed Khalid filed Critical Mohamed Khalid
Priority to GB0619922A priority Critical patent/GB2442706A/en
Publication of GB0619922D0 publication Critical patent/GB0619922D0/en
Publication of GB2442706A publication Critical patent/GB2442706A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7216Intramedullary pins, nails or other devices for bone lengthening or compression
    • A61B17/7225Intramedullary pins, nails or other devices for bone lengthening or compression for bone compression
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7233Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7291Intramedullary pins, nails or other devices for small bones, e.g. in the foot, ankle, hand or wrist
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7216Intramedullary pins, nails or other devices for bone lengthening or compression
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00004(bio)absorbable, (bio)resorbable, resorptive
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39Markers, e.g. radio-opaque or breast lesions markers

Abstract

The rod comprises at least two portions 10, 11 and one of said portions comprises a material with a radiodensity which contrasts with that of another of the portions. Portion 11 may be made up of radiolucent polymeric material and portion 10 of radiopaque titanium.

Description

A BONE FIXATOR

The present invention relates to a bone fixator for keeping broken bones supported whilst they grow back together. More specifically, but not exclusively the invention relates to an intramedullary bone fixator for use in broken bones.

Often the tendon or arrangement of tendons in proximity to a fractured bone mean that it is difficult for the bone to be fixated by surgery without causing damage to one or more of the surrounding tendons.

For example, in the hand the proximal phalanges have an associated deep flexor tendon intimately related to a superficial flexor-tendon which both lie under the phalanx. Another tendon lies above the phalanx. It is important : ** 15 that these tendons are regularly mobilised to prevent any fibrous adhesions *. ** forming between the tendons and which may impair movement of the finger. It *.S.

is therefore advantageous that the finger is mobilised as soon as possible after *: the fracture which some of the known methods of treating the fracture do not S.....

* allow. : 20 * *

Known methods of treating fractures in the proximal phalanges may involve the splinting of the bones and joints on the exterior of the finger.

Although this means the bones of the fracture are supported and kept in alignment, movement of the finger is restricted by this method and because the tendons are not being moved fibrous adhesions may form leading to stiffness of the finger when the splint is removed. Physiotherapy after the splint is removed can help ease stiffness in the finger although in many cases full mobility may not be restored.

An alternative method is to use transfixing wires, such as K-wires intramedullarly across the fracture. The use of K-wires is more stable than using a splint however since the wires may extend over a joint in the bone the movement of the joint is still restricted and the same problems of stiffness of the finger as previously described may be experienced. In addition surgery is required to insert and then later remove wires from the hand.

Another known method is the use of a plate and screws fixator. Under surgery a plate is placed on the surface of the bone over the fracture and screws are placed through the plate and bone on either side of the fracture to hold the plate in place across the fracture. The screws are usually driven into the bone in a direction substantially perpendicular with respect to the plane of the surface of the bone. The problem associated with this method is that it is difficult to know how far to insert the screws into the bone. If they are inserted too far they protrude through to the other side of the bone and there is a risk they may rupture the sheaths of the underlying tendons, or the tendons themselves.

: *** 15 Damage to the tendons may result in stiffness or loss of function of the finger.

If the screws are not inserted sufficiently far the plate will not be firmly attached to the bone to keep the fracture fixated. Since the plate lies on the * surface of the bone it must be inserted under the overlying tendon, which can * be difficult and time consuming to do in surgery and again risks damage to the tendon. Indeed the tendon is often intentionally split to facilitate placement of the plate. The surgery to fix the plate requires that an incision the length of the plate is made in the skin, which is undesirable since the healing of the skin impairs movement of the finger and may lead to scarring. Further it may be necessary that the plate is later removed, which would require additional surgery.

The problems outlined above which are experienced in fractures in the proximal phalanges are also experienced in other areas of the body, for example the wrist where small bones are in very close proximity to tendons and are at a risk of being damaged during fixation of the fracture.

In larger bones, such as the tibia, fractures may be fixed using an intramedullary rod. Typically, for the treatment of a fracture in the tibia a guide wire is inserted through and along the fractured bone from a location below the knee joint. A reamer is then inserted to widen the hole through the bone and an S elongated rod having a series of apertures near both ends of the rod is pushed through the hole in the bone across the fracture. After removing the guide wire and reamer, a jig moveable around the exterior of the leg is fitted to the top end or proximal end of the rod, which is the end nearest the knee, to assist with the insertion of screws through the rod and bone to fixate the rod. Under X-ray, the surgeon attaches the jig to align the holes in the jig with the apertures near the top end/proximal end of the rod. The screws are then inserted from the exterior of the skin through the holes in the jig which guides the screws through the apertures in the rod and into the bone. For the apertures near the bottom end, or distal end of the rod the jig is not a useful device because it tends to sag and : *.** 15 thus the holes in the jig do not correspond with the apertures in the rod. A jig S..

can only be used accurately along a certain distance of the rod from the top end, or proximal end of the rod. Typically, this distance is three times the diameter of the rod. The surgeon therefore has to drill holes in the bone free S.....

* hand under X-ray control for affixing the distal end to the bone. Sometimes a :" 20 targeting device with concentric circles together with a radiolucent drill is used to facilitate this difficult task. The screws must be inserted through the apertures perpendicular to the apertured surface of the rod. Even with the assistance of the targeting device and radiolucent drill it is no simple task and can be time consuming to align and insert the screws correctly into the apertures of the rod which is not desirable to the patient or the surgeon.

An object of the present invention is to provide a means for the intramedullary fixation of bone fractures which mitigates or overcomes the problems associated with the aforementioned fixation techniques.

According to one aspect of the invention there is provided an intramedullary elongate rod for the fixation of bone fractures, said rod comprising at least one region of a polymeric material for receiving means for fixating the rod to the bone.

Preferably, the rod comprises two regions of a polymeric material, each of the regions being at a respective end zone of the rod.

According to a further aspect of the invention there is provided an intramedullary elongate rod for the fixation of bone fractures, said rod comprising at least two portions and one of said portions comprises a material with a radiodensity which contrasts with that of another of the portions.

The rod is preferably provided with at least one cavity. More : *** 15 preferably, one of the at least two portions is located within the cavity. S... * . *..

Preferably, at least one end region of the rod comprises the at least two S...

portions of a material of a contrasting radiodensity. More preferably, each end **..

* region of the rod comprises the at least two portions of material of a contrasting radiodensity.

***.S. * S

The contrasting material of the at least two portions is preferably exposed at a surface of the rod.

Preferably, one of the at least two portions comprises a substantially radiolucent material. More preferably, the one of the at least two portions comprises a polymeric material. More preferably still, the one of the at least two portions comprises a biodegradable material.

Preferably, another of the at least two portions comprises a substantially radiopaque material. More preferably, the another of the at least two portions comprises a porous material. More preferably still, the another of the at least two portions comprises porous titanium.

When the rod is inserted into a bone X-ray imaging can be used to obtain an image of the position of the rod within the bone. By using materials of a contrasting radiodensity, an image of the at least two portions within the rod can be obtained. If a polymeric material is used as one of the portions, it is shown up as white on the X-ray image. If a titanium material is used for the other portion it, will show up as being darker than the polymeric material.

The at least two portions are preferably arranged in layers as viewed from one direction of the rod. Preferably the at least two portions are arranged : *. 15 in layers as viewed from the opposite direction of the rod. More preferably at a...

least one region of the rod has a sandwich appearance comprising a central layer of material of one of the at least two portions and at least one outer layer comprising the material of another of the portion(s). Preferably still, the central *s....

* layer is flanked by two outer layers which comprise the material, or materials : 20 of another of the portion(s). With this arrangement the central layer is an easily identifiable region into which the surgeon may insert the screws or pins.

The rod is preferably provided with a bore which extends lengthwise of the rod. This allows the rod to pass over a guide wire andlor reamer for insertion into a bone.

Preferably the rod is a fixator for a proximal phalanx The invention will now be described, by way of example with reference to the following drawings in which: Figure 1 shows a longitudinal cross section of a fractured proximal phalanx fixed with a known arrangement of plate and screws, Figure 2 shows a transverse cross section of the bone of figure 1 along lines XX of figure 1, Figure 3a is a longitudinal cross sectional view of a fixator in accordance with the invention, Figure 3b shows a transverse cross section of the fixator along line AA of Figure 3a, and Figure 4 is a longitudinal cross sectional view of the fixator of figure 3 : ** 15 inserted within a fractured bone. S... * .

Figure 1 shows a longitudinal cross sectional view of a known means of S...

fixing a fracture in the hand of a proximal phalanx 1. The drawings show a *S....

* simplified sketch of the tendon and bone arrangement in the fractured proximal phalanx as seen from the side of a finger. Above the fractured bone 3 there is a *: tendon 2 and below the fractured bone 3 there are two tendons 4. Once the broken bone has been manipulated so that the two parts are aligned, a plate 5 is affixed across the fracture along the top surface 3a of the bone by means of screws or pins 6. The plate 5 is fitted under the tendon 2 during surgery which can be tricky and time consuming. Using X-ray imaging, screws or pins 6 are inserted through apertures (not shown) in the plate 5 and bone 3 either side of the fracture to fixate the plate to the bone. The screws or pins 6 are inserted in a direction substantially perpendicular with respect to the apertured surface of the plate 5. If the screws/pins 6 extend too far through the bone 3 so that the tendons 4 or sheaths of the tendons (not shown) are damaged by the pins or screws, stiffness and possible loss of function of the finger can result.

Figure 2 shows a transverse cross section of the phalanx along line XX of figure 1. Here the plate 5 is shown attached to the bone 3 by screws/pins 6.

The screws/pins are inserted perpendicular to the surface of the bone as in figure 1. In this arrangement they could potentially damage the underlying tendons if they are too long.

Figure 3a shows a transverse cross section of an intramedullary fixator in accordance with the invention. The fixator comprises a cylindrical rod 10 made of a porous material such as titanium or a similar material. The rod is shown in figure 3 with one end portion being angled with respect to the other.

However, the rod may be straight or otherwise depending on the bone into which it is to be inserted.

: ** 15 The rod 10 has a cannula or bore 15 which extends lengthwise of the rod S...

and allows the rod to be threaded over a guide wire and reamer when inserted S...

into the bone. At each end the rod has a portion of material 11 of a radiodensity different from that of the rest of the porous material of the rod 10. The portion of material 11 is located within a cavity 17 at each end of the rod. The cavity 17 is created by removing two parts 12b of the wall of the rod which are diametrically opposed and leaving two parts 12a of the wall which are diametrically opposed. Part of the core of the rod, between the removed parts of the wall is also relieved. By core, it is meant the porous material of the rod which is located within the wall of the rod.

The rod 10 with its cavities 17 may be made from a rod in which parts of the wall and core are removed to form the cavities, as previously described.

Alternatively, the rod 10 may be made complete with the cavities 17 formed by blow moulding, or otherwise.

The cavity 17 is then filled with a material having a radiodensity different than that of the porous material of the rod, such as a polymeric material, for example a high density plastics material or bio soluble polymer.

This may be achieved by dipping or pouring a molten polymer material into the cavities 17 and allowing the polymeric material to harden within the cavities.

The molten polymer flows into the pores of the porous material so that when it hardens the polymer is firmly held within the cavities. If, a non-porous material is used instead of the porous material, the inner surface of the cavities 17 could be roughened, or appropriately shaped to allow the polymer to stick and be firmly retained within the cavities of the rod 10.

Figure 3b shows a transverse cross sectional view of the end of the rod along line AA of figure 3a. The core of the rod between the removed parts of the wall 1 2b has been removed and a material of contrasting radiodensity : *** 15 inserted. A bore 15 has then been made lengthwise through the rod and s.. through the portion 11. Further parts of the wall of the rod could be removed from the remaining parts of the wall 12a and be filled with a polymeric material 5S*s if required. * I

* ... . 20 Figure 4 is a longitudinal cross sectional view of the fractured bone 3 with the fixator rod 10. A guide wire is inserted into the bone by known methods used in surgery for inserting intramedullary fixators. Typically, a small incision is made through the skin and the top tendon (extensor tendon), not shown into the fractured bone 3 and a guide wire inserted through the fractured bone across the fracture and into the other part of the fractured bone.

A reamer is then inserted over the guide wire to widen the holes through the bone. The fixator rod can then be inserted into the holes in the confronting ends of the bone across the fracture and orientated such that the portion 11 of the rod is facing sideways as shown in figure 4. The reamer and guide wires are removed. The fixator rod then needs to be held in place by screws or pins or staples 16. Under X-ray imaging the polymer filled portion 11 will show up as a white portion between darker images of the wall 12a of the rod 10 clearly indicating to the surgeon where the screws may be inserted. Since there are no tendons on the side of the finger where the screws or pins are to be inserted, the surgeon can simply insert the screws or pins through the skin and bone from each side of the finger into the white polymeric area of the rod to secure the fixator to the bone.

With the known method previously described the fixator was provided with apertures and the surgeon had to insert the screws into the apertures in a direction substantially perpendicular with respect to the apertured surface of the rod which proved time consuming and in case of small bones, extremely difficult. With the present invention, it is not necessary that the polymeric material has apertures to receive the screws since the screws can be driven into and retained within the polymer. The polymer owing to its contrasting : * * radiodensity with the porous material of the rod is clearly identifiable on an X-ray image as a white area (shown in figure 4 with hatching) enclosed by two darker areas (walls of the rod I 2a, which are shown unshaded in figure 4). As S...

viewed under X-ray by the surgeon from the side of the finger the walls of the rod 12a and the polymeric portion 11 have the appearance of a sandwich, the :.20 polymeric portion 11 being a central layer sandwiched between an upper and *: lower layer of the walls of the rod 12a. The surgeon's task of inserting the pins or screws through the rod and bone is made easier since the surgeon has a large region which is easily identifiable in the rod in which to insert the screws as compared with known apertured fixators. Indeed, because there is a large region in which to insert the screws and the polymeric material can firmly retain the inserted screws pins or screws, the pins or screws need not be inserted perpendicularly with respect to the surface of the rod as was the case with the methods previously described. The pins or screws can be inserted obliquely into the polymer portion 11 and still firmly fixate the rod. The overall surgery time for fixing the rod is less than that for fixing known apertured fixators.

Ajig can still be used for the fixation of one end of the rod to the bone if desired. Since only a small incision is made in the skin and tendon to insert the guide wire, reamer and rod into the bone, the healing of the skin and the tendon is quicker which allows the finger to be mobilised soon after surgery.

The fixator can be left in the body as the bone will grow over it. This reduces the need for further surgery. Intramedullary fixators mean movement of the finger can be commenced almost immediately after surgery thus reducing stiffness of the finger.

The phalanx has been used as an example of the type of bone which may benefit from the invention, however, it must be understood that the invention can also be used in other bones, for example wrist, forearm, arm and shoulder : ,*** 15 bones where it is necessary that precise insertion of fixing pins through the "* bone and fixator is required. It must be understood that although it has been ***.

stated that the rod comprises at least one portion comprising porous titanium, *S*. * *

other suitable materials could be used.

****** * * Further, the other portion of the rod need not be a polymeric material. It is necessary, however, that the materials used for the two portions of the rod have a contrasting radiodensity so that when the rod is viewed by X-ray it is clear to the surgeon where the portion into which the screws are to be inserted is located.

Claims (20)

  1. Claims 1. An intramedullary elongate rod for the fixation of bone
    fractures, said rod comprising at least two portions and one of said portions comprises a material with a radio density which contrasts with that of another of the portions.
  2. 2. An intramedullary elongate rod as claimed in claim 1 wherein the rod is provided with at least one cavity.
  3. 3. An intramedullary elongate rod as claimed in claim 2 wherein one of said at least two portions is located within the cavity.
  4. 4. An intramedullary elongate rod as claimed in any preceding claim * *.
    wherein at least one end region of the rod comprises said at least two S...
    portions. S... * I
    *:"
  5. 5. An intramedullary elongate rod as claimed in any preceding claim wherein each end region of the rod comprises said at least two portions.
    *..... * *
  6. 6. An intramedullary elongate rod as claimed in any preceding claim wherein the material of said at least two portions is exposed at a surface of the rod.
  7. 7. An intramedullary elongate rod as claimed in any preceding claim wherein one of said at least two portions comprises a substantially radiolucent material.
  8. 8. An intramedullary elongate rod as claimed in claim 7 wherein the one of said at least two portions comprises a polymeric material.
  9. 9. An intramedullary elongate rod as claimed in claim 7 or claim 8 wherein the one of said at least two portions comprises a biodegradable material.
  10. 10. An intramedullary elongate rod as claimed in any preceding claim wherein another of said at least two portions comprises a substantially radiopaque material.
  11. 11. An intramedullary elongate rod as claimed in claim 10 wherein the another of said at least two portions comprises a porous material.
  12. 12. An intramedullary elongate rod as claimed in claim 10 or claim 11 wherein the another of said at least two portions comprises porous titanium. * S.
  13. 13. An intramedullary elongate rod as claimed in any preceding claim S...
    wherein said at least two portions are arranged in layers as viewed from * . *S..
    * one direction of the rod.
    *S*... * S
    *
  14. 14. An intramedullary elongate rod as claimed in claim 13 wherein said at *.*.. * S
    least two portions are arranged in layers as viewed from an opposite direction of the rod.
  15. 15. An intramedullary elongate rod as claimed in any preceding claim wherein at least one region of the rod has a sandwich appearance comprising a central layer of material of one of said at least two portions and at least one outer layer comprising the material of said another portion.
  16. 16. An intramedullary rod as claimed in any preceding claim wherein said rod is provided with a bore which extends lengthwise of the rod.
  17. 17. An intramedullary rod as claimed in any preceding claim wherein the rod is a fixator for a proximal phalanx.
  18. 18. An intramedullary elongate rod for the fixation of bone fractures, said rod comprising at least one region of a polymeric material for receiving means for fixating the rod to the bone.
  19. 19. An intramedullary elongate rod as claimed in claim 18 wherein the rod comprises two regions of a polymeric material, each of said regions being at a respective end zone of the rod.
  20. 20. An intramedullary elongate rod as substantially described herein with * ..
    reference to figures 3a to 4 of the drawings. * * S... * * *... *. * . 5SSSS * .
    *IS*SS
    S S
GB0619922A 2006-10-09 2006-10-09 An intramedullary rod for the fixation of bone fractures Withdrawn GB2442706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0619922A GB2442706A (en) 2006-10-09 2006-10-09 An intramedullary rod for the fixation of bone fractures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0619922A GB2442706A (en) 2006-10-09 2006-10-09 An intramedullary rod for the fixation of bone fractures
PCT/GB2007/003840 WO2008044011A2 (en) 2006-10-09 2007-10-08 Intramedulleray fixation device

Publications (2)

Publication Number Publication Date
GB0619922D0 GB0619922D0 (en) 2006-11-15
GB2442706A true GB2442706A (en) 2008-04-16

Family

ID=37454223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0619922A Withdrawn GB2442706A (en) 2006-10-09 2006-10-09 An intramedullary rod for the fixation of bone fractures

Country Status (2)

Country Link
GB (1) GB2442706A (en)
WO (1) WO2008044011A2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012107913A3 (en) * 2011-02-13 2012-11-08 Carbofix Orthopedics Ltd. Segmented intramedullary implant
US8709055B2 (en) 2009-01-16 2014-04-29 Carbofix Orthopedics Ltd. Composite material bone implant
US9101427B2 (en) 2010-06-07 2015-08-11 Carbofix Orthopedics Ltd. Self tapping insert
US9526549B2 (en) 2012-01-16 2016-12-27 Carbofix Orthopedics Ltd. Bone screw with insert
US10154867B2 (en) 2010-06-07 2018-12-18 Carbofix In Orthopedics Llc Multi-layer composite material bone screw

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0329654D0 (en) 2003-12-23 2004-01-28 Smith & Nephew Tunable segmented polyacetal
WO2007103276A2 (en) 2006-03-03 2007-09-13 Smith & Nephew, Inc. Systems and methods for delivering a medicament
WO2008129245A1 (en) 2007-04-18 2008-10-30 Smith & Nephew Plc Expansion moulding of shape memory polymers
WO2008131197A1 (en) 2007-04-19 2008-10-30 Smith & Nephew, Inc. Multi-modal shape memory polymers
WO2008130954A2 (en) 2007-04-19 2008-10-30 Smith & Nephew, Inc. Graft fixation
EP2364115B1 (en) 2008-10-15 2019-02-20 Smith & Nephew, Inc. Composite internal fixators
EP2198792A1 (en) * 2008-12-19 2010-06-23 Sepitec Foundation Implant system for stabilising bones
TR201000166A2 (en) * 2010-01-11 2011-07-21 Purisa Hüsrev intramedullary distal amputations in the venous system drained.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005527A (en) * 1975-12-22 1977-02-01 Wilson Ralph S Depth gauge
US5057110A (en) * 1988-12-01 1991-10-15 Johnson & Johnson Intramedullar nail
DE4140874A1 (en) * 1991-12-11 1993-06-24 Hofmann Joseph Pins for repairing fracture in long bone - are made in part or in whole of plastics which is absorbed into surrounding tissue
WO2000061018A1 (en) * 1999-04-09 2000-10-19 Depuy Orthopaedics, Inc. Intramedullary nail with nonmetal spacers
US20020173792A1 (en) * 1999-04-09 2002-11-21 Depuy Orthopaedics, Inc. Non-metal inserts for bone support assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205118C1 (en) * 1992-02-13 1993-07-29 Dietmar Dr.Med. Priv. Doz. 5000 Koeln De Pennig
IT1261494B (en) * 1993-07-30 1996-05-23 Gideon Raphael Tock The intramedullary nail and osteosynthesis crosslinked, fitted for application in orthopedics without exposure to ionizing radiation.
US6053918A (en) * 1994-10-25 2000-04-25 General Orthopedics Apparatus and method for fastening an intramedullary nail to a bone
DE19633865A1 (en) * 1996-08-16 1998-02-19 Guenter Prof Dr Med Lob endoprosthesis
US6261289B1 (en) * 1998-10-26 2001-07-17 Mark Levy Expandable orthopedic device
US6808527B2 (en) * 2000-04-10 2004-10-26 Depuy Orthopaedics, Inc. Intramedullary nail with snap-in window insert
DK1820462T3 (en) * 2004-03-31 2011-12-19 Orthofix Srl Intramedullary nail comprising elements of shape memory material
US20060147332A1 (en) * 2004-12-30 2006-07-06 Howmedica Osteonics Corp. Laser-produced porous structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005527A (en) * 1975-12-22 1977-02-01 Wilson Ralph S Depth gauge
US5057110A (en) * 1988-12-01 1991-10-15 Johnson & Johnson Intramedullar nail
DE4140874A1 (en) * 1991-12-11 1993-06-24 Hofmann Joseph Pins for repairing fracture in long bone - are made in part or in whole of plastics which is absorbed into surrounding tissue
WO2000061018A1 (en) * 1999-04-09 2000-10-19 Depuy Orthopaedics, Inc. Intramedullary nail with nonmetal spacers
US20020173792A1 (en) * 1999-04-09 2002-11-21 Depuy Orthopaedics, Inc. Non-metal inserts for bone support assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8709055B2 (en) 2009-01-16 2014-04-29 Carbofix Orthopedics Ltd. Composite material bone implant
US9101417B2 (en) 2009-01-16 2015-08-11 Carbofix Orthopedics Ltd. Composite material bone implant
US10028777B2 (en) 2009-01-16 2018-07-24 Carbofix Orthopedics Ltd. Composite material bone implant
US9974586B2 (en) 2010-06-07 2018-05-22 Carbofix Orthopedics Ltd. Composite material bone implant
US9101427B2 (en) 2010-06-07 2015-08-11 Carbofix Orthopedics Ltd. Self tapping insert
US9370388B2 (en) 2010-06-07 2016-06-21 Carbofix Orthopedics Ltd. Composite material bone implant
US10154867B2 (en) 2010-06-07 2018-12-18 Carbofix In Orthopedics Llc Multi-layer composite material bone screw
WO2012107913A3 (en) * 2011-02-13 2012-11-08 Carbofix Orthopedics Ltd. Segmented intramedullary implant
US9526549B2 (en) 2012-01-16 2016-12-27 Carbofix Orthopedics Ltd. Bone screw with insert

Also Published As

Publication number Publication date
GB0619922D0 (en) 2006-11-15
WO2008044011A2 (en) 2008-04-17
WO2008044011A3 (en) 2008-07-17

Similar Documents

Publication Publication Date Title
Kempf et al. Closed locked intramedullary nailing. Its application to comminuted fractures of the femur.
US6524314B1 (en) Interlocking intramedullary nail
ES2533700T3 (en) Systems for internal bone fixation
US5409489A (en) Surgical instrument for cone-shaped sub-trochanteric rotational osteotomy
JP4142264B2 (en) Plastic Surgery reamer and orthopedic kit for forming a cavity in orthopedic implants and bone
US9538998B2 (en) Method and apparatus for fracture fixation
US5480400A (en) Method and device for internal fixation of bone fractures
US6527775B1 (en) Intramedullary interlocking fixation device for the distal radius
US6273892B1 (en) Fracture fixation system
US20070173843A1 (en) Drug delivering bone plate and method and targeting device for use therewith
JP4762575B2 (en) Tunnel notch and guidewire delivery device and method for preparing a bone tunnel
US20070055257A1 (en) Cannulated screw access system
EP0099642B1 (en) Intramedullary fixation device
US8043299B2 (en) Internal bone transport
Hankemeier et al. Improved comfort in lower limb lengthening with the intramedullary skeletal kinetic distractor
US5423850A (en) Balloon compressor for internal fixation of bone fractures
US20110282346A1 (en) Fracture Fixation Device, Tools and Methods
US8979846B2 (en) Flexible nail assembly for fractures of long bones
US6355041B1 (en) Bone pin-plate surgical device and method for promoting athrodesis of the equine fetlock joint
US6712073B2 (en) Extramedullary rod implant for long bones
JP5964545B2 (en) Apparatus and method for use in ligament regenerative surgery
US20030135211A1 (en) Intramedullary nail, device for inserting a screw into the same and method thereof
US5057110A (en) Intramedullar nail
US10271883B2 (en) Method for treating joint pain and associated instruments
AU2002335116B2 (en) Locking device for intramedullary pin fixation

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)