WO2023129043A2 - Closed reduction distractor with external fixation - Google Patents

Closed reduction distractor with external fixation Download PDF

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Publication number
WO2023129043A2
WO2023129043A2 PCT/TR2022/051568 TR2022051568W WO2023129043A2 WO 2023129043 A2 WO2023129043 A2 WO 2023129043A2 TR 2022051568 W TR2022051568 W TR 2022051568W WO 2023129043 A2 WO2023129043 A2 WO 2023129043A2
Authority
WO
WIPO (PCT)
Prior art keywords
distractor
pin
fixator
pins
supporting body
Prior art date
Application number
PCT/TR2022/051568
Other languages
French (fr)
Other versions
WO2023129043A3 (en
Inventor
İbrahim VARGEL
Arda KÜÇÜKGÜVEN
Original Assignee
Hacettepe Üni̇versi̇tesi̇
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
Priority claimed from TR2021/021264 external-priority patent/TR2021021264A2/en
Application filed by Hacettepe Üni̇versi̇tesi̇ filed Critical Hacettepe Üni̇versi̇tesi̇
Publication of WO2023129043A2 publication Critical patent/WO2023129043A2/en
Publication of WO2023129043A3 publication Critical patent/WO2023129043A3/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
    • A61B17/66—Alignment, compression or distraction mechanisms
    • 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
    • A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
    • A61B17/6475—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod the connecting rod being threaded

Definitions

  • the invention mainly relates to a closed reduction distractor with fixation, in which fractured or osteotomized bones are fixed with external fixators after proper reduction.
  • Fixators are used in cases of open fracture fixation and periarticular fracture fixation as well as bone lengthening, pseudoarthrosis treatment, and deformity correction. Fixators refer to systems obtained by attaching wires or nails passing through the bone to a rigid support outside the bone. In fracture treatments, closed reduction, plaster cast, external fixation, open reduction, plate, and screw fixation methods are used depending on the structure of the fracture.
  • the pin angles are not adjustable in the small size of external fixators in craniomaxillofacial surgery and hand surgery.
  • the device does not have a zoom-out or zoom- in feature. Due to these disadvantages, the positioning of the segments cannot be changed postoperatively at the bedside or during patient follow-ups, which may lead to malunion of the bones or require secondary revision surgeries. Since it is not possible to position the pins at different angles as desired in maxillofacial and hand surgery external fixations performed in the prior art, adjustment of the segments by distraction or zooming to the desired extent is not possible.
  • the patent application numbered TR 2019/05529 which is in the state of the art, discloses a hybrid fixator embodiment used in hand surgery. In this application, distraction between the two points seems to have a feature but considering the amount and plane of angulation between the pins of the fractured segments, it seems to be insufficient in practice.
  • the patent application numbered W02007053887A1 which is in the state of the art, discloses an external fixator. The patent application discloses the inclusion of an external fixator and a fixing part defining a cavity to aid in the healing of a fracture in a bone. There is no angulation feature in this application.
  • the pins are sent to various parts of the fracture line in the desired orientation and through the circular area of the device, and cement is poured into this circular area for stabilization. This method does not solve the other problems of the prior art and remains primitive.
  • the present invention relates to closed reduction distractors with external fixation that fulfill the requirements mentioned above, eliminating all disadvantages, and introducing several additional advantages.
  • the main object of the invention is to provide a fixator having the feature of a closed reduction distractor with external fixation that will percutaneously stabilize fractured or osteotomized bone segments with pins (externally) and adjust the distance and relationship between these segments by decreasing or increasing them by means of its distraction feature.
  • One object of the invention is to provide a fixator that is both a bone distractor and an external fixator that functions in all three planes.
  • Another object of the invention is to provide a fixator for use in craniomaxillofacial surgery and hand surgery.
  • Another object of the invention is to provide a fixator in which the angles of the heads in which the pins are stabilized to the body of the device are adjustable and which allows small positional adjustments even postoperatively by eliminating the need for the pins of different bone segments to be exactly parallel to one another.
  • the present invention is a fixator comprising at least one pin inserted into the patient’s bone, at least one distractor body in which said pin is fixed, and at least one distractor pin that allows the movement of the distractor body, characterized in that it comprises at least one supporting body that allows the pins to be positioned at different angles and heights on the distractor body, and at least one fixing element that allows the pins to be fixed on the supporting body.
  • Figure 1 is a view of the fixator of the invention.
  • Figure 2 is another view of the fixator of the invention.
  • Figure 3 is an isometric and frontal view of the supporting body of the invention from left to right, respectively.
  • Figure 4 is a view of the distractor body of the invention.
  • Figure 5 is an anterior view of the distraction pin of the invention.
  • Figure 6 is a front view of the fixing element of the invention.
  • fixator (1) of the invention is described solely for a better understanding of the subject matter and without any limiting effect.
  • FIG. 1 shows a view of the fixator (1) of the invention.
  • the fixator (1) mainly consists of the supporting body (2), distractor body (3), distractor pin (4), pin (5), and fixing element (4).
  • the supporting body (2) is connected to the distractor body (3) by means of the fixing element (6).
  • the supporting body (2) can rotate 360 degrees on the distractor body (3).
  • Pins (5) fit into the channels (2.1) on the supporting body (2).
  • These channels (2.1) are housing for the pins (5) to be inserted into the bone.
  • the rotatable structure of the supporting body (2) allows the pins to be fixed at different angles. This provides great convenience and flexibility in surgical operations.
  • the channels (2.1) also allow height adjustment of the pins (5) by moving them up and down. Pins (5) are percutaneously inserted into the bones, only the part that enters the bone is grooved to increase the grip and are made of titanium alloy compatible with the tissue.
  • the distractor pin (4) has a head part (4.1) to allow it to be rotated and a grooved part (4.2) that allows the distractor body (3) to move closer or further apart when rotated.
  • a head part (4.1) to allow it to be rotated
  • a grooved part (4.2) that allows the distractor body (3) to move closer or further apart when rotated.
  • the pin channel (3.1) that allows the distractor body (3) to move on the distractor pin (4).
  • the pin channel (3.1) has a form that can work with the grooved part (4.2).
  • the fixing element (6) In order to fix the angle and position (height, etc.) of the pins (5) inserted into the patient’s bone, the fixing element (6) is connected at the top of the supporting body (2).
  • the fixing element (6) also allows postoperative readjustment.
  • the fixing element (6) fixes not only the pins (5) but also the supporting body (2) and the distractor body (3) to one another.

Abstract

The invention relates to a fixator (1) comprising at least one pin (5) inserted into a patient's bone, at least one distractor body (3) to which the said pin (5) is fixed, and at least one distractor pin (4) allowing movement of the distractor body (3). The invention is characterized in that it comprises at least one supporting body (2) for positioning the pins (5) at different angles and heights on the distractor body (3), and at least one fixing element (6) for fixing the pins (5) on the supporting body (2).

Description

CLOSED REDUCTION DISTRACTOR WITH EXTERNAL FIXATION
TECHNICAL FIELD
The invention mainly relates to a closed reduction distractor with fixation, in which fractured or osteotomized bones are fixed with external fixators after proper reduction.
STATE OF THE ART
Treatment of fractures has been one of the most prominent challenges of orthopedics, traumatology, and plastic surgery ever since. Fixators are used in cases of open fracture fixation and periarticular fracture fixation as well as bone lengthening, pseudoarthrosis treatment, and deformity correction. Fixators refer to systems obtained by attaching wires or nails passing through the bone to a rigid support outside the bone. In fracture treatments, closed reduction, plaster cast, external fixation, open reduction, plate, and screw fixation methods are used depending on the structure of the fracture.
In the prior art, the pin angles are not adjustable in the small size of external fixators in craniomaxillofacial surgery and hand surgery. The device does not have a zoom-out or zoom- in feature. Due to these disadvantages, the positioning of the segments cannot be changed postoperatively at the bedside or during patient follow-ups, which may lead to malunion of the bones or require secondary revision surgeries. Since it is not possible to position the pins at different angles as desired in maxillofacial and hand surgery external fixations performed in the prior art, adjustment of the segments by distraction or zooming to the desired extent is not possible.
The patent application numbered TR 2019/05529, which is in the state of the art, discloses a hybrid fixator embodiment used in hand surgery. In this application, distraction between the two points seems to have a feature but considering the amount and plane of angulation between the pins of the fractured segments, it seems to be insufficient in practice. The patent application numbered W02007053887A1, which is in the state of the art, discloses an external fixator. The patent application discloses the inclusion of an external fixator and a fixing part defining a cavity to aid in the healing of a fracture in a bone. There is no angulation feature in this application. In addition, in the area where the fracture segment is pinned, the pins are sent to various parts of the fracture line in the desired orientation and through the circular area of the device, and cement is poured into this circular area for stabilization. This method does not solve the other problems of the prior art and remains primitive.
As a result, fixators are being improved and new embodiments are needed to eliminate the disadvantages mentioned above and to bring solutions to the existing systems.
OBJECTS OF THE INVENTION
The present invention relates to closed reduction distractors with external fixation that fulfill the requirements mentioned above, eliminating all disadvantages, and introducing several additional advantages.
The main object of the invention is to provide a fixator having the feature of a closed reduction distractor with external fixation that will percutaneously stabilize fractured or osteotomized bone segments with pins (externally) and adjust the distance and relationship between these segments by decreasing or increasing them by means of its distraction feature.
One object of the invention is to provide a fixator that is both a bone distractor and an external fixator that functions in all three planes.
Another object of the invention is to provide a fixator for use in craniomaxillofacial surgery and hand surgery.
Another object of the invention is to provide a fixator in which the angles of the heads in which the pins are stabilized to the body of the device are adjustable and which allows small positional adjustments even postoperatively by eliminating the need for the pins of different bone segments to be exactly parallel to one another. In order to realize all the above-mentioned advantages, which will become clear in the detailed description below, the present invention is a fixator comprising at least one pin inserted into the patient’s bone, at least one distractor body in which said pin is fixed, and at least one distractor pin that allows the movement of the distractor body, characterized in that it comprises at least one supporting body that allows the pins to be positioned at different angles and heights on the distractor body, and at least one fixing element that allows the pins to be fixed on the supporting body.
The structural and characteristic features and all advantages of the invention will become clearer from the figures given below and the detailed description written with reference to these figures. Therefore, evaluation should be carried out by considering these figures and the detailed description.
BRIEF DESCRIPTION OF FIGURES
The present invention should be evaluated with the following figures in order to best understand the embodiment and advantages of the present invention with additional elements. Figure 1 is a view of the fixator of the invention.
Figure 2 is another view of the fixator of the invention.
Figure 3 is an isometric and frontal view of the supporting body of the invention from left to right, respectively.
Figure 4 is a view of the distractor body of the invention.
Figure 5 is an anterior view of the distraction pin of the invention.
Figure 6 is a front view of the fixing element of the invention.
REFERENCE NUMBERS
1. Fixator
2. Supporting body
2.1. Channel
3. Distractor Body
3.1. Pin channel
4. Distractor pin
4.1. Head part 4.2. Grooved part
5. Pin
6. Fixing element
DETAILED DESCRIPTION OF THE INVENTION
In this detailed description, the preferred embodiments of the fixator (1) of the invention are described solely for a better understanding of the subject matter and without any limiting effect.
Figure 1 shows a view of the fixator (1) of the invention. The fixator (1) mainly consists of the supporting body (2), distractor body (3), distractor pin (4), pin (5), and fixing element (4).
The supporting body (2) is connected to the distractor body (3) by means of the fixing element (6). The supporting body (2) can rotate 360 degrees on the distractor body (3). Pins (5) fit into the channels (2.1) on the supporting body (2). Preferably there are two parallel channels (2.1) on the supporting body (2). These channels (2.1) are housing for the pins (5) to be inserted into the bone. The rotatable structure of the supporting body (2) allows the pins to be fixed at different angles. This provides great convenience and flexibility in surgical operations. The channels (2.1) also allow height adjustment of the pins (5) by moving them up and down. Pins (5) are percutaneously inserted into the bones, only the part that enters the bone is grooved to increase the grip and are made of titanium alloy compatible with the tissue.
In this embodiment of the invention, there are two distractor bodies (3) on the distractor pin (4) and two supporting bodies (2) connected to the distractor body (3). When there are two supporting bodies (2), a total of 4 pins (5) can be fixed to the patient’s bone. Since the supporting body (2) to which the pins (5) are fitted is rotatable on the distractor body (3), the pins (5) in the two separate supporting bodies (2) do not have to be in parallel. This provides great convenience in a surgical operation.
The distractor pin (4) has a head part (4.1) to allow it to be rotated and a grooved part (4.2) that allows the distractor body (3) to move closer or further apart when rotated. When the distractor pin (4) is rotated with a key at the head part (4.1), the distractor body (3) on the grooved part (4.2) moves. There is a pin channel (3.1) that allows the distractor body (3) to move on the distractor pin (4). The pin channel (3.1) has a form that can work with the grooved part (4.2). The fact that the distractor pin (4) is rotatable, and the pins (5) can rotate back and forth or 360 degrees in the supporting bodies (2) allows for postoperative readjustment.
In order to fix the angle and position (height, etc.) of the pins (5) inserted into the patient’s bone, the fixing element (6) is connected at the top of the supporting body (2). The fixing element (6) also allows postoperative readjustment. The fixing element (6) fixes not only the pins (5) but also the supporting body (2) and the distractor body (3) to one another.

Claims

CLAIMS A fixator (1) comprising at least one pin (5) inserted into the patient’s bone, at least one distractor body (3) to which said pin (5) is fixed, and at least one distractor pin (4) allowing movement of the distractor body (3), characterized in that it comprises at least one supporting body (2) allowing the pins (5) to be positioned at different angles and heights on the distractor body (3), and at least one fixing element (6) allowing the pins (5) to be fixed on the supporting body (2). A fixator (1) according to claim 1, characterized in that it comprises at least one channel (2.1) provided on the supporting body (2) and housing the pins (5). A fixator (1) according to claim 2, characterized in that it comprises two channels (2.1) positioned in parallel to each other. A fixator (1) according to claim 1, characterized in that the supporting body (2) is connected to the distractor body (3) such that it can rotate 360 degrees. A fixator (1) according to claim 1, characterized in that it comprises a pin channel (3.1) for moving the distractor body (3) on the distractor pin (4). A fixator (1) according to claim 1, characterized in that it comprises a head part (4.1) for rotating the distractor pin (4) and a grooved part (4.2) for moving the distractor body (3) closer or further apart when rotated.
6
PCT/TR2022/051568 2021-12-27 2022-12-22 Closed reduction distractor with external fixation WO2023129043A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2021021264 2021-12-27
TR2021/021264 TR2021021264A2 (en) 2021-12-27 CLOSED REDUCTION DISTRACTOR WITH EXTERNAL FIXATION

Publications (2)

Publication Number Publication Date
WO2023129043A2 true WO2023129043A2 (en) 2023-07-06
WO2023129043A3 WO2023129043A3 (en) 2023-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2022/051568 WO2023129043A2 (en) 2021-12-27 2022-12-22 Closed reduction distractor with external fixation

Country Status (1)

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WO (1) WO2023129043A2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29515007U1 (en) * 1995-09-19 1995-12-07 Pennig Dietmar Osteosynthesis tools
US7588571B2 (en) * 2005-03-18 2009-09-15 Ron Anthon Olsen Adjustable splint for osteosynthesis with modular joint
US20230025511A1 (en) * 2020-02-18 2023-01-26 Wright Medical Technology, Inc. Bone fixation device

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