WO2007145420A1 - Écarteur destiné à être utilisé dans une opération chirurgicale d'une apophyse Écpineuse de la colonne vertÉbrale - Google Patents

Écarteur destiné à être utilisé dans une opération chirurgicale d'une apophyse Écpineuse de la colonne vertÉbrale Download PDF

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Publication number
WO2007145420A1
WO2007145420A1 PCT/KR2007/001415 KR2007001415W WO2007145420A1 WO 2007145420 A1 WO2007145420 A1 WO 2007145420A1 KR 2007001415 W KR2007001415 W KR 2007001415W WO 2007145420 A1 WO2007145420 A1 WO 2007145420A1
Authority
WO
WIPO (PCT)
Prior art keywords
supporting parts
spacer
spinous processes
pair
connecting part
Prior art date
Application number
PCT/KR2007/001415
Other languages
English (en)
Inventor
Shin Goo Hur
Yeon Ho Kim
Jun Ho Song
Nam Gu Kim
Original Assignee
Bio-Smart Co., Ltd
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 Bio-Smart Co., Ltd filed Critical Bio-Smart Co., Ltd
Publication of WO2007145420A1 publication Critical patent/WO2007145420A1/fr

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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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7065—Devices with changeable shape, e.g. collapsible or having retractable arms to aid implantation; Tools therefor
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant

Definitions

  • the present invention relates to a spine fixing instrument inserted between spinous processes of a spine, and more particularly, to a spacer which is inserted between spinous processes to fix a spine by constantly securing a space between spinous processes through a feature of shape memory alloy.
  • a spine fixing instrument is a medical instrument used for orthopedics or neurosurgery so as to correct a spine or fix a damaged part.
  • a spine fixing instrument constructed with a pair of screws fixed to a spine and a rod for connecting both screws to each other has been widely used.
  • the spine fixing instrument with the aforementioned structure is used in a method in which by driving a screw after drilling into both sides of the corresponding area, in a state a broken area or deformed area of a spine disk (scoliosis, kyphosis, and etc.) is incised and a wrong spine arrangement is corrected
  • the present invention provides a spacer, which is inserted between spinous processes of a spine, capable of preventing a spine bone from being damaged, simplifying a surgical operation, and reducing a surgical operation time by fixing a space between the spinous processes of the spine by using a shape memory alloy that is transformed due to a body temperature.
  • the present invention also provides a spacer, which is inserted between spinous processes of a spine, having a structure capable of preventing the spacer from being separated from the spinous processes due to floating of the spine in left and right directions and in forward and backward directions.
  • a spacer which is inserted between spinous processes of a spine, the spacer comprising: a pair of supporting parts for supporting a pair of the spinous processes; and a connecting part for connecting the pair of the supporting parts to each other, which is made of a shape memory alloy and transformed in a direction in which the pair of the supporting parts are spaced apart from each other due to a body temperature, thereby providing expansive force for supporting the spinous processes.
  • the supporting parts may be integrated into the connecting part by using the shape memory alloy.
  • the supporting parts may be transformed due to the body temperature to construct notch structures into which the spinous processes are inserted.
  • the connecting part may be transformed from an oval shape to a circular shape due to the body temperature.
  • the pair of the supporting parts may be constructed with a wire, strip or plate with a predetermined length of which a central part is connected to upper and lower ends of the connecting part and horizontally laid, and both sides of each supporting part may be transformed to be bended to a vertical direction with respect to the central part so as to form the notch structure.
  • the pair of the supporting parts may be transformed due to the body temperature to construct notch structures into which the spinous processes are inserted.
  • the supporting parts may be constructed with a bended wire, strip, or plate so as to form the notch structures at a central portion of the supporting part.
  • the connecting part may be constructed with a wire, strip, or plate with a round shape, which connects both central parts of the pair of the supporting parts to each other.
  • the supporting parts may be constructed with a bended wire, strip, or plate so as to form the notch structures.
  • the connecting part may be constructed with a wire, strip, or plate with a round shape which connects the pair of the supporting parts to each other.
  • the spacer which is inserted between the spinous processes may further include a curve part which extends from the supporting parts so as to hook up the spinous processes.
  • FIG. 1 is a perspective view illustrating a spacer which is inserted between spinous processes according to a first embodiment of the present invention.
  • FIG. 2 illustrates a changed state of the spacer which is inserted between spinous processes of FIG. 1 according to a body temperature.
  • FIG. 3 is a perspective view illustrating a spacer which is inserted between spinous processes of FIG. 1.
  • FIG. 4 is a perspective view illustrating a spacer which is inserted between spinous processes according to a second embodiment of the present invention.
  • FIG. 5 illustrates a changed state of the spacer which is inserted between spinous processes of FIG. 4 according to a body temperature.
  • FIG. 6 is a perspective view illustrating a state in which the spacer of FIG. 4 is inserted between spinous processes.
  • FIG. 7 is a perspective view illustrating a spacer which is inserted between spinous processes according to a second embodiment of the present invention.
  • FIG. 8 illustrates a changed state of the space which is inserted between spinous processes of FIG. 7 according to a body temperature.
  • FIG. 9 is a perspective view illustrating a state in which the space of FIG. 7 is inserted between spinous processes.
  • FIG. 1 is a perspective view illustrating a shape memory state of a spacer which is inserted between spinous processes according to a first embodiment of the present invention.
  • the spacer which is inserted between spinous processes according to the first embodiment of the present invention is made of a shape memory alloy.
  • the spacer includes a body constructed with a pair of supporting parts 101 for supporting the spinous processes of a spine and a connecting part 100 for connecting the pair to the supporting parts 101 to each other, which provides expansive force to the supporting parts 101.
  • the supporting parts 101 serve to provide supporting planes for supporting spinous processes between which the spacer is inserted.
  • a pair of supporting parts 101 are prepared in correspondence with the pair of the spinous processes.
  • the supporting parts 101 provide reentrant notch structures 102 into which the spinous processes are inserted.
  • the notch structures 102 are provided through a transformation process of the shape memory alloy after inserting the spacer between the spinous processes.
  • the notch structures 102 of the supporting parts 101 serves to prevent the spacer body from floating from the spinous processes after inserting the spacer between the spinous processes.
  • the notch structures 102 are not limited to a U-shape shown in FIG. 1. Since the notch structures 102 have only to provide regions in which the spinous processes are held, the notch structures 102 may have various shapes such as a V- shape.
  • the connecting part 100 connects the pair of the supporting parts 101 to each other.
  • the connecting part 100 is transformed in a direction in which the pair of the supporting parts are spaced apart from each other due to a body temperature, thereby providing expansive force for allowing the supporting parts 101 to support the spinous processes.
  • the connecting part 100 is made of a shape memory alloy.
  • the supporting parts 101 and the connecting part 100 are integrated into a single body.
  • the connecting part 100 and the supporting parts 101 are made of the shape memory alloy.
  • the shape memory alloy may be an alloy of which a main ingredient is a titanium nickel (TiNi) alloy.
  • the shape memory alloy is not limited thereto.
  • a wire or strip made of the shape memory alloy is fabricated to a shape, which is to be maintained after insertion of the spacer, and fixed so as not to be deformed during a heat treatment process. Then, the shape memory heat treatment is applied to the wire or strip in a temperature range between about 300 degrees Celsius and 900 degrees of Celsius for more than ten minutes.
  • a plate with a predetermined length and a predetermined thickness is fabricated to a shape to be maintained after insertion of the spacer by using a cutting machine. Then, the shape memory heat treatment is applied to the plate in a temperature range between about 300 degrees Celsius and 900 degrees of Celsius for more than ten minutes.
  • the shape memory heat treatment may be applied to the wire, strip, or plate in a temperature range between about 300 degrees Celsius and 700 degrees of Celsius for more than ten minutes.
  • the shape memory process is applied to the connecting part 100 of the spacer according to the first embodiment of the present invention so that the connecting part 100 has a transformable structure in which the shape of the connecting part 100 is transformed from an oval shape to a circular shape through the shape memory process due to a body temperature.
  • the shape memory process is applied to the pair of the supporting parts 101 so that central portions of the pair of the supporting parts 101 are respectively connected to upper and lower ends of the connecting part 100 and horizontally laid and so that both sides of each supporting part are transformed to be bended to a vertical direction with respect to the central portions so as to form the notch structures 102.
  • the spacer is inserted in a state that the connecting part 100 is shrunk so that the spacer has a height less than the distance between the spinous processes between which the spacer is inserted, in a martensite state in a temperature lower than about 25 degrees Celsius that is the transformation temperature of the spacer.
  • the temperature of the spacer body increases due to the body temperature.
  • the spacer body temperature is equal to or greater than the transformation temperature, as shown in FIG. 2B, the connecting part 100 and the supporting parts 101 of the spacer are restored to a state before shrinking and expanded (refer to dotted arrows).
  • the supporting parts 101 are transformed so that both ends of each supporting part 101 are bended in a vertical direction with reference to the central portion of each supporting part 101 to form notch structures 102, thereby supporting the spinous processes.
  • FIG. 3 illustrates a state in which a spacer is inserted between a pair of spinous processes 10.
  • the spacer fixes the space between the spinous processes 10 by extending the connecting part 100 and the supporting parts 101.
  • the spinous processes 10 are respectively inserted into the notch structures 102 to prevent the spacer from being separated from the spinous processes, when the spine floats.
  • FIG. 4 is a perspective view illustrating a shape memory state of a spacer which is inserted between spinous processes according to a second embodiment of the present invention.
  • the spacer which is inserted between the spinous processes according to the second embodiment of the present invention is manufactured through the same shape memory process as the first embodiment, the spacer includes supporting parts 104 and connecting parts 103 with different structures from the first embodiment.
  • the spacer which is inserted between spinous processes according to the second embodiment of the present invention includes a body constructed with a pair of the supporting parts 104 in which notch structures 105 for supporting the spinous processes of a spine are prepared and a connecting part 103 for connecting the pair of the supporting parts 104 to each other, which provides expansive force to the supporting parts 104.
  • the notch structures of the supporting parts 104 are always provided regardless of the transformation process of the shape memory alloy.
  • the supporting parts 104 are constructed with a bended wire, strip, or plate so as to form the notch structures 105 into which the spinous processes are inserted at central portions of the supporting parts.
  • the connecting part 103 is constructed with a wire, strip, or plate with a round shape which connects central parts of the pair of the supporting parts to each other.
  • the shape of the connecting part 103 of the spacer according to the second embodiment of the present invention is transformed from a substantial oval shape to a circular shape through the shape memory process due to a body temperature.
  • the width of the pair of the supporting parts 104 are transformed from a narrow width to a wide width through the shape memory process.
  • the spacer is inserted in a state that the connecting part 103 is shrunk so that a distance between the notch structures 105 of the pair of the supporting parts 104 is less than that between the spinous processes between which the spacer is inserted, in a martensite state in a temperature lower than about 25 degrees Celsius that is the transformation temperature of the spacer.
  • the temperature of the spacer body increases due to the body temperature.
  • the spacer body temperature is equal to or greater than the transformation temperature, as shown in FIG. 5B, the connecting part 103 and the supporting parts 104 of the spacer are restored to a state before shrinking and expanded (refer to dotted arrows).
  • the spacer is transformed so that the distance between the pair of the supporting parts 104 is increased and so that the width of the notch structures 105 is decreased, thereby supporting the spinous processes of the spine.
  • FIG. 6 illustrates a state in which a spacer is inserted between a pair of spinous processes 10.
  • the spacer fixes the distance between the spinous processes 10 by allowing the connecting part 103 and the supporting parts 104 of the spacer to be expanded due to the body temperature.
  • the spinous processes 10 are hooked up into the notch structures 105, and the spacer is prevented from being separated from the spinous processes 10, when the spine floats.
  • FIG. 7 is a perspective view illustrating a shape memory state of a spacer which is inserted between spinous processes according to a third embodiment of the present invention.
  • the spacer which is inserted between the spinous processes according to the third embodiment of the present invention is manufactured through the same shape memory process as the aforementioned first and second embodiments, the spacer according to the third embodiment includes supporting parts 107 and a connecting part 106 with different structures from the first and second embodiment.
  • the spacer which is inserted between the spinous processes according to the third embodiment of the present invention includes a body constructed with a pair of supporting parts 107, in which notch structures 108 for supporting the spinous processes of a spine are prepared, and a connecting part 106, which connects the pair of the supporting parts 107 to each other, and provides expansive force to the supporting parts 107 when the spacer is transformed.
  • the notch structures 108 of the supporting parts 107 are always provided regardless of a transformation process of a shape memory alloy.
  • the supporting parts 107 are constructed with a bended wire, strip, or plate to form the notch structures 108 into which the spinous processes are inserted.
  • the connecting part 106 is constructed with a wire, strip, or plate with a round shape which connects the pair of the supporting parts 107 to each other.
  • the supporting part 107 may include curve parts 109 to hook up the spinous processes in a side opposite to the part extended to the connecting part 106.
  • the connecting part 106 is transformed from a substantial oval shape to a circular shape through the shape memory process due to a body temperature.
  • the curve parts extended from the supporting parts 107 are transformed into hook shapes to hook up the spinous processes through the shape memory process.
  • the spacer is inserted in a stat that the connecting parts 106 is shrunk so that a distance between the notch structures 108 of the pair of the supporting parts 107 is less than that between the spinous processes between which the spacer is inserted, in a martensite state in a temperature lower than about 25 degrees Celsius that is the transformation temperature of the spacer.
  • the temperature of the spacer body increases due to the body temperature.
  • the spacer body temperature is equal to or greater than the transformation temperature, as shown in FIG. 8B, the connecting part 106 and the supporting parts 107 of the spacer are restored to a state before shrinking and expanded (refer to dotted arrows).
  • the spacer is transformed so that the distance between the pair of the supporting parts 107 is increased, thereby supporting the spinous processes and so that the curve parts 109 hook up the spinous processes, thereby more stably fixing the spacer body.
  • FIG. 9 illustrates a state in which a spacer is inserted a pair of spinous processes 10.
  • the spacer fixes the distance between the spinous processes 10 by allowing the connecting part 106 and the supporting parts 107 of the spacer to be expanded due to the body temperature.
  • the spinous processes 10 are hooked up into the notch structures 108, and the space is prevented from being separated from the spinous processes 10, when the spine floats.
  • a spine is less damaged when a spacer is inserted into spinous processes of the spine, it is possible to rapidly recover a function of the spine.
  • the spacer has only to be located between the spinous processes, since the spacer is expanded due to a body temperature within about one or two minutes, the space is stably fixed. Accordingly, a surgical operation is simple. Thus, it is possible to reduce a surgical operation time.
  • the spacer can be prevented from being separated from the spinous processes by allowing the spinous processes to be inserted into the notch structures when the spine floats in left and right directions and in forward and backward directions, it is possible to stably maintain the inserted state.

Abstract

L'invention concerne un écarteur utilisé pour maintenir un espace entre les apophyses épineuses de la colonne vertébrale. L'écarteur comprend deux parties de support qui soutiennent deux d'apophyses épineuses, et une partie de liaison qui relie mutuellement les parties de support et qui est fabriquée en un alliage à mémoire de forme et transformée dans une direction dans laquelle les deux parties de support sont écartées l'une de l'autre sous l'effet de la température du corps, pour ainsi exercer une force d'écartement qui permet aux parties de support de soutenir les apophyses épineuses. Par conséquent, une opération chirurgicale est plus simplifiée. Il est possible de maintenir un espace entre les apophyses épineuses en incisant une surface minimale. Les dommages infligés à la colonne vertébrale peuvent ainsi être minimisés.
PCT/KR2007/001415 2006-06-12 2007-03-22 Écarteur destiné à être utilisé dans une opération chirurgicale d'une apophyse Écpineuse de la colonne vertÉbrale WO2007145420A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2006-0052355 2006-06-12
KR1020060052355A KR100811210B1 (ko) 2006-06-12 2006-06-12 척추의 스피노스 프로세스 시술용 스페이서

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WO2007145420A1 true WO2007145420A1 (fr) 2007-12-21

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PCT/KR2007/001415 WO2007145420A1 (fr) 2006-06-12 2007-03-22 Écarteur destiné à être utilisé dans une opération chirurgicale d'une apophyse Écpineuse de la colonne vertÉbrale

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WO (1) WO2007145420A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2410932A1 (fr) * 2009-03-27 2012-02-01 Industrial Technology Research Institute Dispositif de stabilisation dynamique vertébrale

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101216212B1 (ko) 2011-08-16 2012-12-28 강지훈 척추고정용 임플란트 및 이의 제조 방법
KR101515724B1 (ko) * 2013-12-30 2015-04-27 동국대학교 산학협력단 척추질환 치료용 임플란트

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040243239A1 (en) * 2001-08-08 2004-12-02 Jean Taylor Vertebra stabilizing assembly
KR20060014574A (ko) * 2004-08-11 2006-02-16 황창순 추간체고정보형재 및 그 시술방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040243239A1 (en) * 2001-08-08 2004-12-02 Jean Taylor Vertebra stabilizing assembly
KR20060014574A (ko) * 2004-08-11 2006-02-16 황창순 추간체고정보형재 및 그 시술방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2410932A1 (fr) * 2009-03-27 2012-02-01 Industrial Technology Research Institute Dispositif de stabilisation dynamique vertébrale
EP2410932A4 (fr) * 2009-03-27 2013-08-28 Ind Tech Res Inst Dispositif de stabilisation dynamique vertébrale

Also Published As

Publication number Publication date
KR20070118344A (ko) 2007-12-17
KR100811210B1 (ko) 2008-03-07

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