WO2012007878A1 - A wire retainer - Google Patents

A wire retainer Download PDF

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Publication number
WO2012007878A1
WO2012007878A1 PCT/IB2011/053003 IB2011053003W WO2012007878A1 WO 2012007878 A1 WO2012007878 A1 WO 2012007878A1 IB 2011053003 W IB2011053003 W IB 2011053003W WO 2012007878 A1 WO2012007878 A1 WO 2012007878A1
Authority
WO
WIPO (PCT)
Prior art keywords
retainer
connection
cavity
wire
wire retainer
Prior art date
Application number
PCT/IB2011/053003
Other languages
French (fr)
Inventor
Emre Karadeniz
Original Assignee
Emre Karadeniz
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 Emre Karadeniz filed Critical Emre Karadeniz
Publication of WO2012007878A1 publication Critical patent/WO2012007878A1/en

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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6441—Bilateral fixators, i.e. with both ends of pins or wires clamped
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8665—Nuts
    • 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
    • A61B17/685—Elements to be fitted on the end of screws or wires, e.g. protective caps
    • 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
    • A61B17/8869—Tensioning devices
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8665—Nuts
    • A61B2017/867—Nuts with integral locking or clamping means

Definitions

  • the present invention relates to a wire retainer which is used for treatment of fractures.
  • Kirschner wire k-wire
  • screw k-wire
  • plate-screw intramedullary nail
  • intramedullary nail k-wire
  • intramedullary nail k-wire
  • external fixation k-wire
  • the aim is to keep fracture fragments in desired position until healing of the fracture is provided.
  • Advantages and disadvantages of these techniques vary by fracture types and influence the treatment plan of the surgeon.
  • the objective of the present invention is to realize a magnetic active retainer which enables wires used for treatment of fractures to remain fixed on bones.
  • Figure 1 is the perspective view of the upper part.
  • Figure 2 is the perspective view of the lower part.
  • Figure 3 is the perspective view of the wire retainer.
  • the inventive retainer (1) comprises:
  • connection surface (4) which is preferably threaded and enables connection to the upper part (2);
  • connection surface (4) at least one lower part (5) which is connected to the upper part (2) by means of the connection surface (4) and includes:
  • At least one cylindrical-shaped extension (6) on the surface of which, contacting with the connection surface (4), there are preferably threads; at least one protrusion (7) which is located on the extension (6), enables the lower part (5) to be moved, parallel with the closed surface of the upper part (2) and has at least one cavity (31) concentric with the cavity (3);
  • At least one cone-shaped slot (8) which is located on a circle concentric with the cavity (31), extends along the extension (6), tapers preferably towards the protrusion;
  • the lower part (5) comprises three slots (8) which are positioned such that angles between them are equal.
  • the upper part (2) is in the form of hexagonal nut.
  • the lower part (5) and the upper part (2) are interlocked by means of a clip mechanism.
  • the protrusion (7) comprises two cuts which are tangential to the side surface of the extension (6) and parallel to each other. These cuts enable the protrusion (7) to be gripped more comfortably.
  • the retainer (1) is placed from both sides of the bone fragments over the k- wires placed in desired position.
  • the retainer (1) is tightened so as to make compression in the fracture line and then it is locked by turning the upper part and the lower part.
  • the retainer (1) moves softly in the direction of compression in fractures, movements in the direction of loosening are prevented by tightening the wires with the balls (9), which are moving towards the narrow part of the slot (8) in the cone-shaped slot (8).
  • the main benefit ensured in treatment of fractures with this technique is that fixation after reduction is provided by making compression in the fracture line by the help of thin wires.
  • fixation after reduction is provided by making compression in the fracture line by the help of thin wires.
  • very small fracture fragments can be compressed and when multiple fixation is required from different directions more number of fixation can be achieved than treatment options defined until today in orthopedic surgery.
  • thin k-wires will be enabled to be used for both compression and buttress purpose. It can be used in the treatment of close-to- joint located fractures such as knee circumference with eliminating the problem of impaction of small fragments. Problem of new fractures which is experienced after bone tissue injury arising from screw holes will be seen far less since the same attachment will be provided with thin k-wires.
  • the inventive retainer (1) brings very important usage advantages in patients having low bone quality, such as osteoporosis, because attachment is provided over bone cortex whereas the compression force tried to be provided by threads in screws leads to difficulties of use in patients having low bone quality because it requires attachment to the bone marrow. Again, owing to the fact that cortical attachment is provided with these retainers (1) problem of retainer (1) loosening is not seen. Removal of the retainers (1) after fracture treatment can be carried out much easier with far less bone and surrounding soft tissue damage by the help of magnets.
  • inventive wire retainer (1) there is possible to develop various embodiments of the inventive wire retainer (1).
  • the invention can not be limited to the examples described herein and it is essentially according to the claims.

Abstract

The present invention relates to a wire retainer (1) which is used for treatment of bone fractures and comprises: at least one upper part (2) that is in the form of nut, one surface of which is closed and the other surface of which is left open for connection; at least one cavity (3) that is located at the centre of the upper part (2); at least one connection surface (4) that is preferably threaded and enables connection of the upper part (2); at least one lower part (5) that is connected to the upper part (2) by means of the connection surface (4). The retainer (1) moves softly in the direction of compression in fractures, movements in the direction of loosening are prevented by tightening the wire with the balls (9), which are moving towards the narrow part of the slot (8) in the cone-shaped slot (8).

Description

A WIRE RETAINER
Field of the Invention
The present invention relates to a wire retainer which is used for treatment of fractures.
Background of the Invention
Techniques developed in surgical treatment of fractures until today are as follows: Kirschner wire (k-wire), screw, plate-screw, intramedullary nail and external fixation. In all aforementioned techniques, the aim is to keep fracture fragments in desired position until healing of the fracture is provided. Advantages and disadvantages of these techniques vary by fracture types and influence the treatment plan of the surgeon.
In fixation with k-wires, which is one of these techniques, after reduction of the fracture it is fixed by passing these straight wires through the bone fragments. The most important restriction of this technique is the forwards/backwards movements of the fragments along the wire because after reduction these wires can not provide compression between the fracture fragments. In addition, these wires may migrate after they are placed into the body.
In fixation of fractures with screws; first of all the fractured fragments are reduced. In the working mechanism of these screws; compression is obtained between fragments on the basis of creating mutual forces between the screw head and the screw threads. In this technique, size of the screw should be increased in order to enhance compression force and fixation strength between the fragments. Size of the screw can not be increased if bone fragments are small. Due to the size of the screws, there may not be enough place between the fragments to insert additional screws. In addition, as surgical technique; first the bone is drilled for screw core by means of a drill then tapping is performed for screw threads afterwards the screws are placed. Before these procedures, sometimes the k-wire should be placed in order to guide the screw additionally. As a conclusion, the surgical technique is relatively difficult. In addition, the fixation tried to be provided by means of the screw threads may not be possible for patients with osteoporosis.
In fixation of fractures with plate and screws, after reduction fracture fragments are fixed to their places by means of plates which are attached via screws. However, due to the plate attachment is performed by means of screws, all disadvantages in application of screws are also present. Plate placement requires more peripheral bone tissue to be stripped and this means more incision and more vascularization problems for bone fragments. The plate may hinder skin closure in areas with thin subcutaneous tissue and plates may be palpable. Plate placement may not be possible when bone fragments are small or very close to the joint. In addition, peripheral tissues are damaged again during the plate removal.
The Unites States patent document no. US5529075, an application in the state of the art, discloses a fixation device which is designed particularly for repairing hallux valgus.
The Unites States patent document no. US 5443464 (A), an application in the state of the art, discloses a support mechanism which will stabilize the bone in bone fractures.
Summary of the Invention
The objective of the present invention is to realize a magnetic active retainer which enables wires used for treatment of fractures to remain fixed on bones. Detailed Description of the Invention
A wire retainer realized to fulfill the objective of the present invention is illustrated in the accompanying figures, in which:
Figure 1 is the perspective view of the upper part.
Figure 2 is the perspective view of the lower part.
Figure 3 is the perspective view of the wire retainer.
1- Retainer
2- Upper part
3- 31- Cavity
4- Connection surface
5- Lower part
6- Extension
7- Protrusion
8- Slot
9- Ball
The inventive retainer (1) comprises:
— at least one upper part (2) which is in the form of nut, one surface of which is closed and the other surface of which is left open for connection;
— at least one cavity (3) which is located at the centre of the upper part (2);
— at least one connection surface (4) which is preferably threaded and enables connection to the upper part (2);
— at least one lower part (5) which is connected to the upper part (2) by means of the connection surface (4) and includes:
at least one cylindrical-shaped extension (6) on the surface of which, contacting with the connection surface (4), there are preferably threads; at least one protrusion (7) which is located on the extension (6), enables the lower part (5) to be moved, parallel with the closed surface of the upper part (2) and has at least one cavity (31) concentric with the cavity (3);
at least one cone-shaped slot (8) which is located on a circle concentric with the cavity (31), extends along the extension (6), tapers preferably towards the protrusion;
— at least one spherical ball (9) which is inserted into the slot (8).
In the preferred embodiment of the invention, the lower part (5) comprises three slots (8) which are positioned such that angles between them are equal. In this embodiment, there is one ball (9) in each of the slots (8).
In the preferred embodiment of the invention, the upper part (2) is in the form of hexagonal nut.
In another embodiment of the invention, the lower part (5) and the upper part (2) are interlocked by means of a clip mechanism.
In a further embodiment of the invention, the protrusion (7) comprises two cuts which are tangential to the side surface of the extension (6) and parallel to each other. These cuts enable the protrusion (7) to be gripped more comfortably.
After fracture fixation, the retainer (1) is placed from both sides of the bone fragments over the k- wires placed in desired position. The retainer (1) is tightened so as to make compression in the fracture line and then it is locked by turning the upper part and the lower part.
The retainer (1) moves softly in the direction of compression in fractures, movements in the direction of loosening are prevented by tightening the wires with the balls (9), which are moving towards the narrow part of the slot (8) in the cone-shaped slot (8).
After the locking procedure, parts of the k-wires protruding from the retainer (1) are cut. Thus, the fracture fixation procedure is finished. After the fracture healing process is over, in order to remove the retainers (1) by small incisions made over the retainers (1) the retainers (1) are approached then the connection of the upper part (2) and the lower part (5) is loosened slightly. By the help of a magnet applied to the retainers (1), the balls (9) in the retainer (1) are pulled back to the broad side of the slot (8) and the retainer gets free from the k-wire then the k-wire is removed by being pulled.
The main benefit ensured in treatment of fractures with this technique is that fixation after reduction is provided by making compression in the fracture line by the help of thin wires. Thus, very small fracture fragments can be compressed and when multiple fixation is required from different directions more number of fixation can be achieved than treatment options defined until today in orthopedic surgery. With the inventive retainer (1), thin k-wires will be enabled to be used for both compression and buttress purpose. It can be used in the treatment of close-to- joint located fractures such as knee circumference with eliminating the problem of impaction of small fragments. Problem of new fractures which is experienced after bone tissue injury arising from screw holes will be seen far less since the same attachment will be provided with thin k-wires. In cases where the bone anatomy does not permit thick fixation means, such as elbow circumference, providing compression over wires by the retainer (1) will be an important usage advantage and a new horizon in treatment of these fractures. Treatment of fractures can be carried out by far less damaging the bone and surrounding soft tissues. Surgery happens much easier and in a short time since there is no need for drilling, tapping procedures. Owing to the fact that sizes of the inventive retainer (1) are as big as screw heads, the retainer (1) occupies far less space in comparison with plates placed on the fracture and subcutaneous palpability problem of the retainer (1) is seen far less. The inventive retainer (1) brings very important usage advantages in patients having low bone quality, such as osteoporosis, because attachment is provided over bone cortex whereas the compression force tried to be provided by threads in screws leads to difficulties of use in patients having low bone quality because it requires attachment to the bone marrow. Again, owing to the fact that cortical attachment is provided with these retainers (1) problem of retainer (1) loosening is not seen. Removal of the retainers (1) after fracture treatment can be carried out much easier with far less bone and surrounding soft tissue damage by the help of magnets.
Within the scope of this basic concept, it is possible to develop various embodiments of the inventive wire retainer (1). The invention can not be limited to the examples described herein and it is essentially according to the claims.

Claims

1. A wire retainer (1) comprising at least one upper part (2) which is in the form of nut, one surface of which is closed and the other surface of which is left open for connection; at least one cavity (3) which is located at the centre of the upper part (2); at least one connection surface (4) which is preferably threaded and enables connection of the upper part (2); at least one lower part (5) which is connected to the upper part (2) by means of the connection surface (4) characterized by
-at least one lower part (5) having at least one cylindrical-shaped extension (6) on the surface of which, contacting with the connection surface (4), there is preferably a thread; at least one protrusion (7) which is located on the extension
(6) , enables the lower part (5) to be moved, parallel with the closed surface of the upper part (2) and has at least one cavity (31) concentric with the cavity (3); at least one slot (8) which is located on a circle concentric with the cavity (31), extends along the extension (6) and
-at least one ball (9) which is inserted into the slot (8).
2. A wire retainer (1) according to Claim 1, characterized by a lower part (5) which comprises at least one cone-shaped slot (8) tapering towards the protrusion
(7) ·
3. A wire retainer (1) according to any of the preceding claims, characterized by an upper part (2) which is in the form of hexagonal nut.
4. A wire retainer (1) according to any of the preceding claims, characterized by a protrusion (7) which has two cuts enabling it to be attached more comfortably, tangential to the side surface of the extension (6) and parallel to each other.
PCT/IB2011/053003 2010-07-12 2011-07-06 A wire retainer WO2012007878A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2010/05662 2010-07-12
TR2010/05662A TR201005662A1 (en) 2010-07-12 2010-07-12 A wire holder.

Publications (1)

Publication Number Publication Date
WO2012007878A1 true WO2012007878A1 (en) 2012-01-19

Family

ID=44545781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/053003 WO2012007878A1 (en) 2010-07-12 2011-07-06 A wire retainer

Country Status (2)

Country Link
TR (1) TR201005662A1 (en)
WO (1) WO2012007878A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016144271A1 (en) 2015-03-10 2016-09-15 Karadeni̇z Emre An inner gripper for the lower part of the wire retainers
WO2016144270A1 (en) 2015-03-10 2016-09-15 Karadeni̇z Emre A removal apparatus for the balls inside the wire retainer
WO2016144273A1 (en) 2015-03-10 2016-09-15 Karadeni̇z Emre Surface increasing implant for wire retainers
PL3270802T3 (en) 2015-03-17 2019-05-31 Emre Karadeniz A wire stretcher for kirschner wire passing through wire retainers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5443464A (en) 1993-02-16 1995-08-22 Memphis Orthopaedic Design, Inc. External fixator apparatus
US5529075A (en) 1994-09-12 1996-06-25 Clark; David Fixation device and method for repair of pronounced hallux valgus
JP2005065748A (en) * 2003-08-27 2005-03-17 Kozo Nakamura Clamping utensil and wound external fixing utensil
US20070171540A1 (en) * 2006-01-19 2007-07-26 Sdgi Holdings, Inc. Devices and methods for grasping an elongated medical element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5443464A (en) 1993-02-16 1995-08-22 Memphis Orthopaedic Design, Inc. External fixator apparatus
US5529075A (en) 1994-09-12 1996-06-25 Clark; David Fixation device and method for repair of pronounced hallux valgus
JP2005065748A (en) * 2003-08-27 2005-03-17 Kozo Nakamura Clamping utensil and wound external fixing utensil
US20070171540A1 (en) * 2006-01-19 2007-07-26 Sdgi Holdings, Inc. Devices and methods for grasping an elongated medical element

Also Published As

Publication number Publication date
TR201005662A1 (en) 2012-01-23

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