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WO2025018540A1 - Ensemble vis pédiculaire - Google Patents

Ensemble vis pédiculaire Download PDF

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Publication number
WO2025018540A1
WO2025018540A1 PCT/KR2024/006608 KR2024006608W WO2025018540A1 WO 2025018540 A1 WO2025018540 A1 WO 2025018540A1 KR 2024006608 W KR2024006608 W KR 2024006608W WO 2025018540 A1 WO2025018540 A1 WO 2025018540A1
Authority
WO
WIPO (PCT)
Prior art keywords
operating
screw
load
extension
anchor
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.)
Pending
Application number
PCT/KR2024/006608
Other languages
English (en)
Korean (ko)
Inventor
정의수
조사무엘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InnoteamInc
CG Bio Co Ltd
Original Assignee
InnoteamInc
CG Bio 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
Priority claimed from KR1020230196482A external-priority patent/KR20250015750A/ko
Application filed by InnoteamInc, CG Bio Co Ltd filed Critical InnoteamInc
Publication of WO2025018540A1 publication Critical patent/WO2025018540A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 or setting implements
    • 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, e.g. stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices

Definitions

  • the present invention relates to a pedicle screw assembly, and more specifically, to a pedicle screw assembly having a structure capable of improving work speed and efficiency while minimizing the area of the invasive site.
  • a pedicle screw or pedicle screw (hereinafter referred to as "pedicle screw”), is a device that is fixed to the spine.
  • Pedicle screws are widely used to restore a spine that has been deformed to an abnormal state to a normal state. Specifically, after a plurality of pedicle screws are fixed to a pedicle, a rod or the like is inserted into the fixed plurality of pedicle screws to apply an external force, thereby allowing the spine to be deformed to a normal state.
  • Pedicle screws penetrate the skin and muscles covering the spine to access the spine. Therefore, in order to attach a pedicle screw to the spine, an invasive process, that is, an incision in the surgical site, must be made first.
  • the tasks of pulling the load, delivering the screw for fixing the load, and fixing the delivered screw are usually performed by different devices.
  • different devices since different devices must be repeatedly introduced and withdrawn from the invasive site, there is a concern that the size of the invasive site will increase and the speed and efficiency of the task will decrease.
  • Korean Patent Document No. 10-1497898 discloses a spinal rod coupling device.
  • the spinal rod coupling device includes a body including an insertion groove into which one end of a spinal rod is inserted in a first direction and a guide groove through which a portion of the spinal rod is guided to rotate in a second direction intersecting the first direction, a fixing member provided on the body, and a pressing member for pressing the fixing member.
  • the spinal rod coupling device disclosed in the above-mentioned prior document only provides a method for coupling the spinal rod. That is, the above-mentioned prior document does not provide a method for easily and effectively coupling not only the spinal rod but also the pedicle screw for maintaining the spinal rod in the spine to the spine.
  • Korean Patent Document No. 10-0942226 discloses a rod holder and a spinal minimally invasive surgical system using the same. Specifically, a rod holder configured to operate in a two-stage loading manner and capable of easily mounting a rod, and a spinal minimally invasive surgical system using the same are disclosed.
  • the rod holder disclosed in the above-mentioned prior document and the pedicle minimally invasive surgical system using the same assume that the pedicle screw is already connected to the spine.
  • the above-mentioned prior document also does not provide a method for easily and effectively connecting not only the rod but also the pedicle screw.
  • the present invention is intended to solve the above problems, and an object of the present invention is to provide a pedicle screw assembly having a structure capable of performing all operations related to load fixation through a single device.
  • Another object of the present invention is to provide a pedicle screw assembly having a structure capable of performing all operations related to rod fixation while minimizing the invasive area.
  • Another object of the present invention is to provide a pedicle screw assembly having a structure capable of performing all operations related to load fixation without the need for introduction and withdrawal of different devices.
  • Another object of the present invention is to provide a pedicle screw assembly having a structure capable of improving work efficiency.
  • Another object of the present invention is to provide a pedicle screw assembly having a structure capable of improving working speed.
  • Another object of the present invention is to provide a pedicle screw assembly having a structure in which the connection between each component is stably maintained while the convenience of operation is improved.
  • a pedicle screw assembly comprising: an insertion screw coupled to a pedicle; an anchor member rotatably supporting the insertion screw; an extension member coupled to the anchor member and having an extended hollow formed therein penetrating in one direction; and a first operating member movably coupled to the extension member, wherein a rod receiving portion is formed inside the anchor member, the rod receiving portion being a space communicating with the extended hollow and penetrating a rod, and the first operating member is configured to move in the one direction to press the rod toward the insertion screw.
  • a pedicle screw assembly may be provided, wherein the first operating member includes a first operating body that extends in the one direction and is accommodated in the extended hollow so as to be movable along the one direction; and a rod pressing member that is coupled with one end of the first operating body in the extension direction facing the insertion screw and is configured to move together with the first operating body to pressurize the rod.
  • a pedicle screw assembly may be provided in which the first operating member includes a first operating tail coupled to the other end of the first operating body in the extension direction and exposed to the outside of the extension hollow.
  • the extension member includes an extension body that at least partially surrounds the extension hollow in a radial direction and extends in the one direction; and an extension screw thread formed on a portion of an inner surface of the extension body and positioned adjacent to one end of the extension body, and the first operating member includes an operating screw thread formed on an outer periphery of the first operating body and screw-connected with the extension screw thread, such that when a rotational force is applied to the first operating tail, the first operating member rotates and moves in one of a direction toward the rod and a direction opposite to the rod.
  • a pedicle screw assembly may be provided in which the first operating member includes an operating hollow formed penetratingly therein and extending in the one direction and having each end of the extending direction formed open, and a second operating member is received in the operating hollow so as to be movable along the one direction.
  • the second operating member includes a second operating body extending along the one direction; and a nut coupling portion positioned at one end of the second operating body in the extension direction and coupled with the insertion screw, and when the second operating member is rotated, the insertion screw coupled with the nut coupling portion is rotated and coupled to the pedicle, so that a pedicle screw assembly can be provided.
  • the insertion screw may include an insertion screw body that is exposed to the outside of the anchor member, extends in the one direction, and is insertably coupled to the pedicle; and an insertion screw head that is continuous with one end of the insertion screw body and rotatably coupled to the anchor member, and a pedicle screw assembly may be provided in which an insertion screw opening for receiving the nut coupling portion is recessed and formed on one side of each side of the insertion screw head facing the nut coupling portion.
  • the anchor member may be provided with a pedicle screw assembly including an insertion screw coupling portion that rotatably receives the insertion screw head and is in communication with the load receiving portion.
  • a pedicle screw assembly may be provided, including a compression nut member movably received in the load receiving portion and positioned to face the insertion screw with the load interposed therebetween.
  • a pedicle screw assembly in which the anchor member includes anchor screw threads formed on an inner surface surrounding the load receiving portion, the compression nut member includes a compression nut body forming an outer shape; and compression nut screw threads extending along an outer periphery of the compression nut body and screw-connected with the anchor screw threads.
  • a pedicle screw assembly may be provided in which the second operating member includes a second operating body extending along the one direction; and a nut engaging portion positioned at one end of the second operating body in the extending direction and engaging the compression nut member, and when the second operating member is rotated, the compression nut member engaged with the nut engaging portion rotates along the compression nut thread and moves in one of a direction toward the load and a direction opposite to the load.
  • a pedicle screw assembly may be provided in which the compression nut member includes a compression nut pressing projection positioned on one side of each side of the compression nut body facing the load and configured to protrude convexly in a direction toward the load to press the load in a direction toward the insertion screw.
  • a pedicle screw assembly may be provided in which the second operating member includes a second operating tail positioned at the other end in the extension direction of the second operating body and exposed to the outside of the operating hollow.
  • the second manipulation tail may be provided with a pedicle screw assembly having a polygonal cross-section and a three-dimensional shape having a height in one direction.
  • the pedicle screw assembly can perform all operations related to load fixation through a single device.
  • the pedicle screw assembly according to the embodiment of the present invention can perform all operations related to rod fixation while minimizing the invasive area.
  • the pedicle screw assembly according to the embodiment of the present invention can perform all operations related to load fixation without the introduction and withdrawal of different devices.
  • the spinal screw assembly according to the embodiment of the present invention can have improved work efficiency.
  • the spinal screw assembly according to the embodiment of the present invention can have improved working speed.
  • the spinal screw assembly according to the embodiment of the present invention can improve work convenience while stably maintaining the connection between each component.
  • FIG. 1 is a perspective view illustrating a pedicle screw assembly according to an embodiment of the present invention.
  • Figure 2 is an exploded perspective view illustrating the configuration of the pedicle screw assembly of Figure 1.
  • FIG. 3 is a perspective view illustrating an insertion screw and anchor member provided in the pedicle screw assembly of FIG. 1.
  • FIG. 4 is a cross-sectional view taken along line A-A illustrating the insert screw and anchor member of FIG. 3.
  • FIG. 5 is a perspective view illustrating a compression nut member provided in the pedicle screw assembly of FIG. 1.
  • Fig. 6 is a B-B cross-sectional view illustrating the compression nut member of Fig. 5.
  • FIG. 7 is a perspective view illustrating an extension member provided in the pedicle screw assembly of FIG. 1.
  • Figure 8 is a plan view illustrating the extension member of Figure 7.
  • Fig. 9 is a C-C cross-sectional view illustrating the extension member of Fig. 7.
  • Figure 10 is an enlarged view (a) of part A and an enlarged view (b) of part B showing the extension member of Figure 7.
  • FIG. 11 is a perspective view illustrating a first operating member and a second operating member provided in the pedicle screw assembly of FIG. 1.
  • Fig. 12 is an exploded perspective view showing the configuration of the first operating member and the second operating member of Fig. 11.
  • Fig. 13 is a perspective view illustrating a load pressurizing member provided in the first operating member of Fig. 11.
  • Fig. 14 is a D-D cross-sectional view illustrating the load pressurizing member of Fig. 13.
  • Figure 15 is a perspective view illustrating the first operating member of Figure 11.
  • Fig. 16 is a plan view (a) and an enlarged view (b) of part C showing the first operating member of Fig. 15.
  • FIG. 17 is an E-E cross-sectional view and a partially enlarged view illustrating the first operating element of FIG. 15.
  • Fig. 18 is a perspective view illustrating the second operating member of Fig. 11.
  • Fig. 19 is a front view illustrating the second operating member of Fig. 18.
  • FIGS. 20 to 25 are diagrams showing the state of use of a process in which a pedicle screw and a rod are connected by a pedicle screw assembly according to an embodiment of the present invention.
  • communicating means that one or more members are connected to each other in a fluidic manner.
  • the communication may be formed by members such as conduits, pipes, or tubing.
  • the communication may be used to mean that one or more members are "fluidically connected" to each other.
  • the pedicle screw assembly (10) according to an embodiment of the present invention is illustrated.
  • the pedicle screw assembly (10) according to an embodiment of the present invention can be coupled to a pedicle.
  • a separately provided rod is coupled to the pedicle screw assembly (10) coupled to the pedicle, thereby enabling an external force to be applied to the pedicle.
  • a plurality of pedicle screw assemblies (10) may be provided.
  • the plurality of pedicle screw assemblies (10) may be coupled to the pedicle at different locations.
  • the load may be coupled to each of the plurality of pedicle screw assemblies (10) to apply an external force to the pedicle.
  • the pedicle screw assembly (10) is coupled to the pedicle of a human body.
  • the pedicle screw assembly (10) according to an embodiment of the present invention may be provided as any device that is inserted into the human body and coupled to a bone.
  • a pedicle screw assembly (10) may be formed to have a length in one direction, in the front-back direction in the illustrated embodiment.
  • the pedicle screw assembly (10) may be inserted into a human body along its length direction, so that one side in the length direction, in the illustrated embodiment, the front side, may be coupled to the pedicle.
  • the pedicle screw assembly (10) is configured so that the process of coupling an insertion screw (100) directly coupled to a pedicle and a rod (R) supported by the insertion screw (100) can be performed through a single device. Accordingly, the above process can be performed without the process of withdrawing the pedicle screw assembly (10) inserted into the invasive site.
  • the coupling and support of the insertion screw (100) and the rod (R) can be performed.
  • the above process can be performed by the previously inserted pedicle screw assembly (10), so that the work speed and efficiency can be improved.
  • some components of the pedicle screw assembly (10) can be formed to be movably coupled to each other, but prevented from being randomly detached. Accordingly, the surgical procedure using the pedicle screw assembly (10) can be stably performed.
  • the pedicle screw assembly (10) includes an insertion screw (100), an anchor member (200), a compression nut member (300), an extension member (400), a first operating member (500) and a second operating member (600).
  • the insertion screw (100) is a part where the pedicle screw assembly (10) is directly connected to the pedicle.
  • the insertion screw (100) can be fixedly connected to the pedicle.
  • the insertion screw (100) can be provided in a form that is fixedly connected to the pedicle by an external force, but can be separated from the pedicle by an external force.
  • the insertion screw (100) can be provided in the form of a screw member.
  • the insertion screw (100) constitutes one longitudinal end of the pedicle screw assembly (10).
  • the insertion screw (100) constitutes an anterior end of the pedicle screw assembly (10).
  • the pedicle screw assembly (10) can be moved anteriorly to be introduced into the human body and moved posteriorly to be withdrawn from the human body.
  • the insertion screw (100) supports the rod (R). Specifically, the insertion screw (100) supports the rod (R) on one side of the longitudinal direction of the pedicle screw assembly (10), the front side in the illustrated embodiment.
  • the rod (R) can be supported in close contact with the insertion screw (100) by being pressed by a compression nut member (300) to be described later.
  • An insertion screw (100) is coupled with an anchor member (200).
  • the insertion screw (100) can be rotatably coupled to the anchor member (200).
  • a portion of the insertion screw (100), in the illustrated embodiment, a rearward portion, can be rotatably coupled to an insertion screw engaging portion (220) formed inside the anchor member (200).
  • the insertion screw (100) can be combined with the anchor member (200) in a way that it cannot move in the longitudinal direction, i.e., in the forward and backward direction in the illustrated embodiment. Accordingly, the insertion screw (100) can stably support the load (R) combined with the anchor member (200).
  • the insertion screw (100) can be rotated by the second operating member (600).
  • the insertion screw (100) can receive a nut engaging portion (630) of the second operating member (600) in a retractable manner.
  • the nut engaging portion (630) can have a shape corresponding to the shape of the inner circumferential surface surrounding the insertion screw opening (131) formed in the insertion screw (100).
  • the insertion screw (100) includes an insertion screw body (110), an insertion screw thread (120), an insertion screw head (130), and an insertion screw hollow (140).
  • the insertion screw body (110) constitutes a portion of the outer shape of the insertion screw (100).
  • the insertion screw body (110) is a portion where the insertion screw (100) is coupled to the pedicle.
  • the insertion screw body (110) can be at least partially inserted and coupled to the pedicle.
  • the insertion screw body (110) may have any shape that can be inserted into the pedicle.
  • the insertion screw body (110) has a length in the anteroposterior direction, but is formed such that its cross-sectional area decreases in the direction from the posterior side to the anterior side.
  • the insertion screw body (110) may have a cone or frusto-conical shape in which the cross-sectional area of the anterior side is formed smaller than that of the posterior side.
  • the insertion screw body (110) is combined with the insertion screw thread (120).
  • the insertion screw thread (120) is formed along the outer circumference of the insertion screw body (110).
  • the insertion screw body (110) is coupled with the insertion screw head (130).
  • One longitudinal side of the insertion screw body (110), the rear side in the illustrated embodiment, is coupled with the insertion screw head (130).
  • An insertion screw hollow (140) is formed inside the insertion screw body (110).
  • the insertion screw thread (120) maintains the insertion screw (100) in a state of being engaged with the pedicle.
  • the insertion screw thread (120) extends along the outer circumference of the insertion screw body (110).
  • the insertion screw thread (120) may extend in a helical shape along the outer circumference of the insertion screw body (110).
  • the insertion screw (100) can be screw fit with the pedicle.
  • the insertion screw head (130) constitutes another part of the outer shape of the insertion screw (100).
  • the insertion screw head (130) is a part where the insertion screw (100) is coupled with the anchor member (200).
  • the insertion screw head (130) supports the rod (R).
  • the insertion screw head (130) is received in the insertion screw joint (220) of the anchor member (200) and supported by the anchor body (210). At this time, the insertion screw head (130) can be received in the insertion screw joint (220) so as to be rotatably received. In one embodiment, the insertion screw head (130) can be received in the insertion screw joint (220) so as to be rotatably received about the longitudinal direction of the insertion screw body (110) as an axis.
  • the insertion screw head (130) is continuous with the insertion screw body (110). In the illustrated embodiment, the insertion screw head (130) is continuous with one longitudinal side, i.e., the rear end, of the insertion screw body (110).
  • the insertion screw head (130) can receive a nut engaging portion (630) of the second operating member (600) in a retractable manner.
  • the insertion screw head (130) and the insertion screw body (110) coupled thereto can be rotated by a rotational force applied by the second operating member (600).
  • the insertion screw head (130) includes an insertion screw opening (131).
  • the insertion screw opening (131) is a space in which the insertion screw head (130) receives the nut coupling portion (630).
  • the insertion screw opening (131) is formed recessed on one side in the height direction of the insertion screw head (130), in the illustrated embodiment, on the rear end.
  • the insertion screw opening (131) communicates with the insertion screw hollow (140) formed penetrating the interior of the insertion screw body (110).
  • the insertion screw opening (131) may have any shape that can accommodate the nut coupling portion (630). At this time, a shape, such as a protrusion, may be formed on the inner periphery of the insertion screw head (130) surrounding the insertion screw opening (131) to be coupled with the nut coupling portion (630). Accordingly, the insertion screw head (130) and the insertion screw body (110) coupled therewith may be rotated by the rotational force applied by the second operating member (600).
  • the insertion screw hollow (140) is a space formed inside the insertion screw body (110).
  • the insertion screw hollow (140) extends in the longitudinal direction of the insertion screw body (110), in the front-back direction in the illustrated embodiment.
  • One end of the insertion screw hollow (140) in the longitudinal direction, in the illustrated embodiment, the front end, is open and communicates with the outside.
  • the other end of the insertion screw hollow (140) in the longitudinal direction, in the illustrated embodiment, the rear end is open and communicates with the insertion screw opening (131).
  • the insertion screw hollow space (140) can form a space for accommodating materials, etc. separated from the pedicle when the insertion screw (100) is coupled to the pedicle. Accordingly, pedicle fragments, etc. that may be generated when the insertion screw (100) is coupled can be prevented from being randomly scattered inside the human body.
  • the anchor member (200) rotatably supports the insertion screw (100).
  • the anchor member (200) accommodates a load (R) and is coupled with a compression nut member (300).
  • the load (R) can be supported by the insertion screw (100) and the compression nut member (300) while being accommodated in the anchor member (200).
  • the anchor member (200) is coupled with the extension member (400).
  • the insertion screw (100) coupled with the anchor member (200) can be coupled to the spine by the second operating member (600) that moves along the extension member (400).
  • the compression nut member (300) coupled with the anchor member (200) can be moved to pressurize the rod (R) by the second operating member (600) that moves along the extension member (400).
  • the anchor member (200) can be detachably coupled with the extension member (400).
  • the anchor member (200) can be separated from the extension member (400) and remain within the human body. In this state, it will be understood that the insertion screw (100), the rod (R), and the compression nut member (300) are coupled to the anchor member (200).
  • the anchor member (200) includes an anchor body (210), an insertion screw coupling portion (220), a load receiving portion (230), an anchor screw thread (240), and an extension member coupling portion (250).
  • the anchor body (210) constitutes the outer shape of the anchor member (200). Other components of the anchor member (200) are combined or formed in the anchor body (210). In the illustrated embodiment, the anchor body (210) is formed with an insertion screw coupling portion (220), a load receiving portion (230), an anchor screw thread (240), and an extension member coupling portion (250).
  • the anchor body (210) may have any shape that can be combined with the insertion screw (100), the compression nut member (300), and the extension member (400). In addition, the anchor body (210) may have any shape that can accommodate the load (R). In the illustrated embodiment, the anchor body (210) has a ring-shaped cross-section with a hollow formed therein and a three-dimensional shape having a length in the front-back direction.
  • the anchor body (210) partially accommodates the insertion screw (100). Specifically, the anchor body (210) rotatably accommodates the insertion screw head (130). The anchor body (210) accommodates the rod (R). The rod (R) accommodated in the anchor body (210) can be supported by the insertion screw head (130) and the compression nut member (300).
  • the anchor body (210) can be combined with and accommodate the compression nut member (300). At this time, the degree to which the anchor body (210) accommodates the compression nut member (300) can be changed by the rotation of the second operating member (600).
  • the anchor body (210) is coupled with the extension member (400).
  • the anchor body (210) can be coupled with the extension member (400) by partially covering one side of the length direction of the extension member (400), the front side end in the illustrated embodiment.
  • the space formed inside the anchor body (210) can be divided into an insertion screw joint (220) and a load receiving portion (230).
  • the insertion screw joint (220) rotatably receives the insertion screw head (130).
  • the insertion screw joint (220) is defined as a space surrounded by a portion of the inner circumference of the anchor body (210). In the illustrated embodiment, the insertion screw joint (220) is defined as a space surrounded by one side of the longitudinal direction of the anchor body (210), i.e., the inner circumference on the front side.
  • the insertion screw joint (220) may have a shape corresponding to the shape of the insertion screw head (130).
  • the insertion screw joint (220) is formed as a space having an outer shape of a convex curved surface corresponding to the shape of the insertion screw head (130) which is formed in a sphere shape.
  • Each side in the longitudinal direction of the insertion screw joint (220), the front side and the rear side in the illustrated embodiment, are respectively formed as open.
  • the insertion screw body (110) can be exposed to the outside of the anchor member (200) through the front side of the insertion screw joint (220).
  • the other side in the longitudinal direction of the insertion screw joint (220), the rear side in the illustrated embodiment, is communicated with the load receiving portion (230).
  • the load receiving portion (230) is a space that receives a load (R).
  • the load receiving portion (230) movably receives the load (R).
  • the load receiving portion (230) is defined as a space surrounded by another part of the inner circumference of the anchor body (210). In the illustrated embodiment, the load receiving portion (230) is defined as a space surrounded by the inner circumference on the other side in the longitudinal direction of the anchor body (210), that is, on the rear side.
  • the other side in the longitudinal direction of the anchor body (210) may include a part that is formed to be at least partially open. That is, as shown in FIG. 3, the upper and lower sides of the rear of the anchor body (210) are formed to be open.
  • the rod (R) may penetrate into the rod receiving portion (230) through the part.
  • the rod receiving portion (230) is communicated with the outside through the part.
  • the load receiving portion (230) may have a shape corresponding to the shape of the load (R). As described below, the load (R) has a circular cross-section and is formed to extend in the vertical direction, and the load receiving portion (230) may be formed to be convex toward the front side corresponding to the outer peripheral shape of the load (R).
  • Each side in the longitudinal direction of the load receiving portion (230), the front side and the rear side in the illustrated embodiment, are formed as open, respectively.
  • the other side in the longitudinal direction of the load receiving portion (230), the rear side in the illustrated embodiment, is formed as open and is in communication with the outside.
  • the compression nut member (300) and the second operating member (600) can be introduced into the load receiving portion (230) through the other side.
  • the anchor screw thread (240) is a portion of the anchor member (200) that movably supports the compression nut member (300).
  • the anchor screw thread (240) is screw-connected to the compression nut member (300).
  • the compression nut member (300) can move toward or against the insertion screw head (130), or forward or backward in the illustrated embodiment, while being connected to the anchor screw thread (240).
  • the movement can be achieved by rotating the second operating member (600) coupled to the compression nut member (300).
  • the anchor screw thread (240) is formed on the inner periphery of the anchor body (210). Specifically, the anchor screw thread (240) is formed on the inner periphery of one side surrounding the load receiving portion (230) of the anchor body (210), i.e., the rear side in the illustrated embodiment. As described above, the upper and lower sides of the rear of the anchor body (210) are formed open, so it will be understood that the anchor screw thread (240) can be formed on the left and right inner peripheries of the anchor body (210).
  • the anchor screw thread (240) can be formed to have a length in the longitudinal direction of the anchor body (210), or in the front-back direction in the illustrated embodiment.
  • the compression nut member (300) can be moved in the load receiving portion (230) by the length of the anchor screw thread (240).
  • the extension member joint (250) is a portion where the anchor member (200) is joined to the extension member (400).
  • the extension member joint (250) is located on one side of the length direction of the anchor body (210), in the illustrated embodiment, on the rear side.
  • the extension member coupling portion (250) is coupled with an anchor member coupling protrusion (440) provided on the extension member (400).
  • the extension member coupling portion (250) can accommodate the anchor member coupling protrusion (440).
  • the extension member coupling portion (250) can accommodate the anchor member coupling protrusion (440) in a retractable manner.
  • the anchor member coupling protrusion (440) can be configured to be pulled out from the extension member coupling portion (250) only when a predetermined external force is applied from the outside.
  • the extension member coupling portion (250) may have any shape that can be coupled with the anchor member coupling projection (440).
  • the extension member coupling portion (250) may be formed penetratingly through a surface of the anchor body (210) surrounding the load receiving portion (230).
  • a pair of extension member coupling portions (250) are provided and are formed penetratingly through the left and right surfaces of the rear of the anchor body (210). The extension member coupling portion (250) communicates the load receiving portion (230) with the outside along the width direction.
  • extension member connecting portions (250) can be changed in accordance with the number, shape, and arrangement of the anchor member connecting protrusions (440).
  • the extension member connecting portion (250) is formed as a space in the shape of a disk having a circular cross section and a thickness in the left-right direction.
  • the compression nut member (300) presses the load (R) toward the insertion screw (100).
  • the compression nut member (300) is movably coupled to the anchor member (200) so as to press the load (R) received in the load receiving portion (230) toward the insertion screw head (130).
  • the compression nut member (300) supports the load (R) together with the insertion screw head (130).
  • the compression nut member (300) is coupled with the anchor member (200). Specifically, the compression nut member (300) is received in the load receiving portion (230) and is screw-coupled with the anchor screw thread (240).
  • the compression nut member (300) can be moved by the second operating member (600). Specifically, the compression nut member (300) can be moved along the anchor screw thread (240) toward the load (R) or in the direction opposite to the load (R) by the rotation of the second operating member (600).
  • the compression nut member (300) includes a compression nut body (310), a compression nut thread (320), a compression nut pressing projection (330), and a compression nut hollow (340).
  • the compression nut body (310) constitutes the outer shape of the compression nut member (300).
  • the compression nut body (310) is a portion in which the compression nut member (300) is supported by being combined with the anchor member (200).
  • Another configuration of the compression nut member (300) is formed in the compression nut body (310).
  • the compression nut body (310) is formed with a compression nut screw thread (320), a compression nut pressurizing protrusion (330), and a compression nut hollow (340).
  • the compression nut body (310) may have a shape corresponding to the shape of the anchor member (200). Specifically, the compression nut body (310) may have a shape corresponding to the shape of the load receiving portion (230). In the illustrated embodiment, the compression nut body (310) has a cylindrical shape with a circular cross-section and a height in the front-rear direction.
  • a compression nut screw thread (320) is formed on the outer periphery of the compression nut body (310).
  • the compression nut thread (320) is a portion where the compression nut member (300) is screw-connected with the anchor thread (240).
  • the compression nut thread (320) extends along the outer circumference of the compression nut body (310). In one embodiment, the compression nut thread (320) may extend in a spiral shape. When the compression nut member (300) is rotated while the compression nut thread (320) is connected with the anchor thread (240), the compression nut member (300) may move toward the load (R) or in the opposite direction thereto.
  • the compression nut pressurizing projection (330) is a portion of the compression nut member (300) that pressurizes the load (R).
  • the compression nut pressurizing projection (330) is located on one side facing the load (R), that is, on the front side in the illustrated embodiment.
  • the compression nut pressurizing projection (330) is continuous with the compression nut body (310).
  • the compression nut pressurizing projection (330) protrudes outward from one longitudinal side of the compression nut body (310), that is, the front end in the illustrated embodiment.
  • the compression nut pressurizing projection (330) may have any shape that can stably support the load (R).
  • the compression nut pressurizing projection (330) is formed to be rounded so that one side facing the load (R), that is, the front end, is convex.
  • the compression nut hollow portion (340) is a portion where the compression nut member (300) is coupled with the second operating member (600).
  • the compression nut hollow portion (340) retractably accommodates the nut coupling portion (630).
  • the compression nut hollow (340) is formed on the other side of the compression nut body (310) in the longitudinal direction, i.e., the rear side in the illustrated embodiment. In other words, the compression nut hollow (340) is positioned opposite to the compression nut pressing projection (330).
  • the compression nut hollow (340) may have a shape corresponding to the shape of the nut coupling portion (630).
  • the compression nut hollow (340) is formed as a three-dimensional space having a circular cross-section and extending in the front-back direction.
  • One longitudinal side of the compression nut hollow (340), the front side in the illustrated embodiment, is closed.
  • the other longitudinal side of the compression nut hollow (340), the rear side in the illustrated embodiment is formed open so that a passage for the nut coupling portion (630) to be introduced and withdrawn can be configured.
  • the inner circumference of the compression nut body (310) surrounding the compression nut hollow body (340) may have a shape corresponding to the outer circumference of the nut coupling portion (630). Accordingly, the nut coupling portion (630) inserted into the compression nut hollow body (340) can rotate the compression nut member (300) without spinning.
  • the extension member (400) is coupled with the anchor member (200) to form a path along which the insertion screw (100), the compression nut member (300), the first operating member (500), and the second operating member (600) move.
  • the pedicle screw assembly (10) according to the embodiment of the present invention can perform the processes of coupling the insertion screw (100), transmitting the compression nut member (300), and supporting the rod (R) using the compression nut member (300) and the insertion screw (100) by a single mechanism.
  • the extension member (400) can be positioned so as to be at least partially exposed to the outside of the human body.
  • the insertion screw (100), the compression nut member (300), the first operating member (500), and the second operating member (600) can be easily inserted and withdrawn.
  • the extension member (400) movably receives an insertion screw (100).
  • the insertion screw (100) can move along the interior of the extension member (400) to engage with the anchor member (200).
  • the extension member (400) is coupled with the anchor member (200).
  • the insertion screw (100), the compression nut member (300), the first operating member (500) and the second operating member (600) can be moved along the extension member (400) to the anchor member (200).
  • the extension member (400) movably receives the compression nut member (300).
  • the compression nut member (300) can move along the interior of the extension member (400) to engage the anchor member (200).
  • the extension member (400) is coupled with the first operating member (500). At this time, the extension member (400) can support the first operating member (500) so as to be movable in the longitudinal direction. Such coupling can be achieved by screw-coupling the first operating member (500) with the extension member (400), which will be described in detail later.
  • the extension member (400) is coupled with the second operating member (600). Specifically, the extension member (400) is coupled with the second operating member (600) via the first operating member (500). The extension member (400) movably supports the second operating member (600).
  • the extension member (400) includes an extension body (410), an extension hollow (420), an anchor member receiving portion (430), an anchor member engaging protrusion (440), an operating member engaging portion (450), and an extension screw thread (460).
  • the extension body (410) constitutes a part of the outer shape of the extension member (400).
  • the extension body (410) movably supports the insertion screw (100), the compression nut member (300), the first operating member (500), and the second operating member (600).
  • the extension body (410) is formed to extend in the direction of movement of the above components, i.e., in the forward and backward direction in the illustrated embodiment.
  • extension member (400) is formed or joined to the extension body (410).
  • the extension body (410) is formed with an extension hollow (420), an anchor member receiving portion (430), an anchor member engaging projection (440), an operating member engaging portion (450), and an extended screw thread (460).
  • the extended body (410) may be formed at least partially open. In the illustrated embodiment, both sides of the outer circumference of the extended body (410), the left and right sides in the illustrated embodiment, may be closed, while the other sides of the outer circumference of the extended body (410), the upper and lower sides in the illustrated embodiment, may be formed open.
  • An extended hollow space (420) is formed inside the extended body (410).
  • the extension hollow (420) constitutes a passage through which the insertion screw (100), the compression nut member (300), the first operating member (500), and the second operating member (600) move.
  • the extension hollow (420) can be defined as a space formed inside the extension body (410).
  • the extended hollow (420) extends in the longitudinal direction of the extended body (410), in the front-back direction in the illustrated embodiment.
  • Each end of the longitudinal direction of the extended hollow (420), in the illustrated embodiment, the front-side end and the rear-side end, are each formed open and communicate with the outside.
  • one side of the longitudinal direction of the extended hollow (420), the front end in the illustrated embodiment, is connected to the anchor member receiving portion (430).
  • the other side of the longitudinal direction of the extended hollow (420), the rear end in the illustrated embodiment, is connected to the operating member connecting portion (450).
  • the extended hollow (420) may be partially surrounded by the extended body (410).
  • the width direction of the extended hollow (420), i.e., the left and right sides, is defined by being surrounded by the extended body (410).
  • the anchor member receiving portion (430) is a portion where the extension member (400) is coupled to the anchor member (200).
  • the anchor member receiving portion (430) receives one side of the length direction of the anchor body (210), the rear side in the illustrated embodiment.
  • the one side of the anchor body (210) may be partially surrounded by the extension body (410).
  • the anchor member receiving portion (430) is located at one side of the longitudinal direction of the extended body (410), in the illustrated embodiment, at the front end. In other words, the anchor member receiving portion (430) is located at one side facing the anchor member (200).
  • the anchor member receiving portion (430) is defined by being partially surrounded by the one side, i.e., the front side end, of the extended body (410). In the illustrated embodiment, the anchor member receiving portion (430) is surrounded by the front side end of the extended body (410) on its width direction, i.e., on its left and right sides. The anchor member receiving portion (430) is formed open on its height direction, i.e., on its upper and lower sides.
  • the load receiving portion (230) communicates with the insertion screw coupling portion (220).
  • the insertion screw (100) can be moved to the insertion screw joint (220) by passing through the extension hollow (420) and the anchor member receiving portion (430) in sequence.
  • the compression nut member (300) can be moved to the load receiving portion (230) by passing through the extension hollow (420) and the anchor member receiving portion (430) in sequence.
  • An anchor member coupling projection (440) can be positioned in the anchor member receiving portion (430).
  • the anchor member joining projection (440) is a portion where the extension member (400) is joined to the anchor member (200).
  • the anchor member joining projection (440) can be inserted and joined into the extension member joining portion (250).
  • the anchor member engaging protrusion (440) is engaged with the extended body (410).
  • the anchor member engaging protrusion (440) can be engaged with the extended body (410) so as to be movable in the width direction of the extended body (410), in the left-right direction in the illustrated embodiment.
  • the anchor member engaging projection (440) is at least partially positioned in the anchor member receiving portion (430).
  • the anchor member engaging projection (440) is positioned so as to be exposed in the anchor member receiving portion (430) so as to be insertable into the extended member engaging portion (250) of the anchor member (200) accommodated in the anchor member receiving portion (430).
  • the anchor member coupling protrusion (440) may have any shape that can be easily inserted into the extension member coupling portion (250) while preventing arbitrary withdrawal.
  • the anchor member coupling protrusion (440) is formed so that its cross-sectional area increases in a direction opposite to the anchor member (200), that is, from the front side to the rear side.
  • the anchor member coupling protrusion (440) is formed to have an inclined surface so that it protrudes toward the anchor member receiving portion (430), and its protrusion length becomes longer toward the rear side.
  • the anchor member engaging protrusion (440) when the anchor member (200) is moved in the direction in which it is inserted into the anchor member receiving portion (430), the anchor member engaging protrusion (440) can be easily inserted into the extension member engaging portion (250). In addition, when the anchor member engaging protrusion (440) is inserted into the extension member engaging portion (250), the movement of the anchor member (200) in the direction in which it is pulled out from the anchor member receiving portion (430) can be restricted.
  • a plurality of anchor member coupling protrusions (440) may be provided.
  • the plurality of anchor member coupling protrusions (440) are spaced apart from each other and can be respectively coupled with the plurality of extension member coupling portions (250).
  • the anchor member coupling protrusions (440) are provided in pairs and spaced apart in the width direction of the extension body (410), i.e., in the left-right direction in the illustrated embodiment.
  • the shape, number, and arrangement of the anchor absence joining projections (440) may be changed depending on the shape, number, and arrangement of the extension absence joining portion (250).
  • the operating member coupling portion (450) is a portion where the extension member (400) is coupled with the first operating member (500) and the second operating member (600). As described above, the second operating member (600) is movably coupled with the first operating member (500), and thus the operating member coupling portion (450) can be said to be a portion where the extension member (400) movably supports the first operating member (500) and the second operating member (600).
  • the operating member coupling portion (450) is located on the other side of the longitudinal direction of the extended body (410), i.e., the rear end in the illustrated embodiment. In other words, the operating member coupling portion (450) is located on the other side opposite to the anchor member (200), or on the other side facing the first and second operating members (500, 600).
  • the operating member coupling portion (450) is defined by being partially surrounded by the other side, i.e., the rear end, of the extended body (410). In the illustrated embodiment, the operating member coupling portion (450) is surrounded by the rear end of the extended body (410) in the width direction, i.e., the left and right sides. The operating member coupling portion (450) in the height direction, i.e., the upper and lower sides, are formed open.
  • One side of the operating member coupling portion (450), the rear side in the illustrated embodiment, is formed open.
  • the first operating member (500) and the second operating member (600) can enter the operating member coupling portion (450) through the one side.
  • the insertion screw (100) and the compression nut member (300) can also enter the operating member coupling portion (450) through the one side.
  • the other side of the operating member coupling portion (450), the front side in the illustrated embodiment, is formed open and communicates with the extended hollow portion (420).
  • the above-described components namely the insertion screw (100), the compression nut member (300), the first operating member (500), and the second operating member (600), can pass through the operating member coupling portion (450) and move into the extended hollow portion (420).
  • An extension screw thread (460) may be positioned on the operating member (450).
  • the extension screw thread (460) is a portion where the extension member (400) is coupled with the first operating member (500).
  • the extension screw thread (460) can be screw-coupled with the operating screw thread (540) provided on the first operating member (500). Accordingly, the first operating member (500) can be rotated with respect to the extension member (400) and moved along the longitudinal direction of the extension member (400).
  • the extension screw thread (460) is formed on the inner surface of the extension body (410). Specifically, the extension screw thread (460) is formed on the inner surface of the extension body (410) surrounding the operating member connecting portion (450), i.e., on the left and right inner surfaces at the rear in the illustrated embodiment.
  • the extension screw thread (460) can be extended by a predetermined length along the longitudinal direction of the extension body (410). It will be understood that the length of the extension screw thread (460) is equal to the distance that the first operating member (500) can move along the longitudinal direction of the extension body (410).
  • the first manipulative member (500) and the second manipulative member (600) are movably coupled to the extension member (400).
  • the first manipulative member (500) and the second manipulative member (600) are applied with a force to manipulate other components of the pedicle screw assembly (10) to couple or support the pedicle.
  • the first manipulative member (500) and the second manipulative member (600) can be moved or rotated by the applied force to transmit the manipulation force to the other components.
  • the first operating member (500) can move the rod (R) coupled with the anchor member (200) by a predetermined distance. As will be described later, the process of moving the rod (R) is performed after the insertion screw (100) is coupled to the spine. Therefore, it can be said that the first operating member (500) pulls the rod (R) in the direction toward the insertion screw (100).
  • the first operating member (500) is coupled with the extension member (400). Specifically, the first operating member (500) is screw-coupled with the extension screw thread (460) and is partially received in the operating member coupling portion (450). The first operating member (500) can be moved along the extension hollow (420) to the load receiving portion (230).
  • the first operating member (500) is coupled with the second operating member (600).
  • the first operating member (500) accommodates the second operating member (600) so as to be movable along the longitudinal direction.
  • the second operating member (600) can be moved in the longitudinal direction while being coupled to the first operating member (500).
  • the first operating member (500) includes a first operating body (510), a first operating tail (520), a load pressurizing member (530), an operating screw thread (540), and an operating hollow (550).
  • the first manipulation body (510) constitutes a part of the outer shape of the first manipulation member (500).
  • the first manipulation body (510) is coupled with or supports other components of the first manipulation member (500).
  • the first manipulation body (510) is coupled with the first manipulation tail (520) and the load pressurizing member (530).
  • An manipulation screw thread (540) is formed on the outer periphery of the first manipulation body (510), and an manipulation hollow (550) is formed on the interior of the first manipulation body (510).
  • the first operating body (510) may extend in the longitudinal direction of the extension body (410), in the forward and backward direction in the illustrated embodiment.
  • the extension direction of the first operating body (510) may be the same as the extension direction of the second operating body (610).
  • the first operating body (510) can be moved in the longitudinal direction of the extended hollow (420), in the forward and backward direction in the illustrated embodiment, while being accommodated in the extended hollow (420). At this time, as described above, the first operating body (510) can be moved in the forward and backward direction while being rotated.
  • the first manipulation body (510) accommodated in the extended hollow (420) can be movably and rotatably supported by the extended body (410).
  • the first manipulation body (510) can have a shape corresponding to the shape of the extended hollow (420).
  • the first manipulation body (510) is formed to have a circular cross-section and a length in the front-back direction.
  • the outer diameter of the cross-section of the first manipulation body (510) can be formed to be less than or equal to the diameter of the cross-section of the extended hollow (420).
  • the first operating body (510) is coupled with the first operating tail (520).
  • One longitudinal side of the first operating body (510), the rear side in the illustrated embodiment, is coupled with the first operating tail (520).
  • the first operating body (510) is coupled with the load pressurizing member (530).
  • the other longitudinal side of the first operating body (510), in the illustrated embodiment, the front side, is coupled with the load pressurizing member (530).
  • the first operating body (510) can be removably coupled with the load pressurizing member (530).
  • An operating screw thread (540) is formed on a portion of the outer circumference of the first operating body (510). In the illustrated embodiment, the operating screw thread (540) is formed adjacent to one side in the longitudinal direction of the first operating body (510), that is, the rear side.
  • a manipulation cavity (550) is formed inside the first manipulation body (510).
  • the manipulation cavity (550) extends along the longitudinal direction of the first manipulation body (510), in the front-back direction in the illustrated embodiment.
  • the first operating body (510) includes a pressurizing member coupling portion (511).
  • the pressure member joint (511) is a portion where the first operating body (510) is coupled with the load pressure member (530).
  • the pressure member joint (511) is located at one end of the length direction of the first operating body (510), in the illustrated embodiment, at the front end.
  • the pressurizing member joint (511) can be accommodated in the pressurizing hollow (533) provided in the load pressurizing member (530).
  • the pressurizing member joint (511) can be supported by the inner circumference of the pressurizing body (531) surrounding the pressurizing hollow (533).
  • the pressure member coupling portion (511) may be provided in any shape that can be coupled with the load pressure member (530).
  • the pressure member coupling portion (511) has a length in the front-back direction and is a curved shape that extends along the outer periphery of the first operating body (510).
  • a protrusion (511a) that protrudes outward is formed at one end of the extension direction of the pressure member coupling portion (511), that is, at the front side in the illustrated embodiment.
  • the pressurizing member connecting portion (511) is provided in the form of a hook, is pressed inwardly to change shape, is accommodated in the pressurizing hollow (533), and then, when the pressurizing state is released, is restored to shape toward the outside and can be connected to the pressurizing body (531).
  • a plurality of pressure member coupling parts (511) may be provided.
  • a plurality of pressure member coupling parts (511) may be accommodated in the pressure hollow (533) at different locations to support the pressure body (531).
  • a pair of pressure member coupling parts (511) are provided and are spaced apart from each other in the left-right direction.
  • the first manipulation tail (520) is a portion of the first manipulation member (500) that is manipulated by an external force.
  • the first manipulation tail (520) may be positioned so as to be exposed to the outside of the invasion site.
  • An operator or any device may grasp the first manipulation tail (520) and apply an external force.
  • a rotational force may be applied to the first manipulation tail (520) so that the first manipulation member (500) may rotate and move.
  • the first manipulation tail (520) is coupled with the first manipulation body (510).
  • the first manipulation tail (520) is positioned on the other side of the longitudinal direction of the first manipulation body (510), that is, on the rear side in the illustrated embodiment. In other words, the first manipulation tail (520) is positioned opposite the pressure member coupling portion (511).
  • the first manipulation tail (520) may have any shape that can receive a rotational force from the outside.
  • the first manipulation tail (520) has a polygonal cross-section and a polygonal prism shape having a length in the forward-backward direction.
  • the diameter of the cross-section of the first manipulation tail (520) may be formed to be larger than the diameter of the cross-section of the manipulation member coupling portion (450). Accordingly, the first manipulation member (500) may be moved toward the anchor member (200) only until the front end of the first manipulation tail (520) comes into contact with the rear end of the extension body (410).
  • the first manipulation tail (520) includes a manipulation body receiving portion (521) and a washer member receiving portion (522).
  • the manipulation body receiving portion (521) constitutes a space formed inside the first manipulation tail (520).
  • the manipulation body receiving portion (521) extends in the longitudinal direction of the first manipulation tail (520), in the forward and backward direction in the illustrated embodiment.
  • One longitudinal side of the manipulation body receiving portion (521), in the illustrated embodiment, the front side is communicated with the manipulation hollow (550).
  • the other longitudinal side of the manipulation body receiving portion (521), in the illustrated embodiment, the rear side, is communicated with the washer member receiving portion (522).
  • the manipulation body receiving portion (521) movably receives the second manipulation member (600). Specifically, the manipulation body receiving portion (521) can movably receive the second manipulation member (600) in its longitudinal direction, in the illustrated embodiment, in the forward and backward direction.
  • the manipulation body receiving portion (521) may have any shape that can movably receive the second manipulation member (600).
  • the manipulation body receiving portion (521) is formed as a cylindrical space having a circular cross-section and a length in the front-back direction.
  • the washer member receiving portion (522) constitutes another space formed inside the first operating tail (520).
  • the washer member receiving portion (522) is formed to have a thickness in the longitudinal direction of the first operating tail (520), that is, in the front-back direction.
  • One side in the thickness direction of the washer member receiving portion (522), the front side in the illustrated embodiment, is communicated with the operating body receiving portion (521).
  • the other side in the thickness direction of the washer member receiving portion (522), the rear side in the illustrated embodiment is formed open and communicates with the outside.
  • the washer member receiving portion (522) receives a washer member (640) provided on the second operating member (600).
  • the washer member (640) received in the washer member receiving portion (522) presses the second operating body (610) radially inward, thereby preventing arbitrary movement of the second operating body (610) without application of external force.
  • the load pressurizing member (530) is configured to pressurize the load (R) received in the load receiving portion (230) by the first operating member (500).
  • the load pressurizing member (530) can pressurize the load (R) by rotating and moving with the first operating body (510). That is, it can be said that the load pressurizing member (530) substantially performs the role of pulling the load (R).
  • the load pressure member (530) is coupled with the first operating body (510). Specifically, the load pressure member (530) may be coupled with the pressure member coupling portion (511). In one embodiment, the load pressure member (530) may be detachably coupled with the pressure member coupling portion (511). In the above embodiment, the load pressure member (530) and the pressure member coupling portion (511) are hook-coupled, so that they may not be arbitrarily separated without application of an external force.
  • the load pressurizing member (530) can be moved in the load receiving portion (230) and the extension hollow (420).
  • the load pressurizing member (530) can be rotated or moved together with the first operating body (510) to move in a direction toward or against the load (R) received in the load receiving portion (230).
  • the load pressurizing member (530) includes a pressurizing body (531), a pressurizing arm (532), a pressurizing cavity (533), and a separation space (534).
  • the pressurizing body (531) constitutes the body of the load pressurizing member (530).
  • the pressurizing body (531) is a portion where the load pressurizing member (530) is coupled with the first operating body (510).
  • the pressurizing body (531) may be coupled with other components of the load pressurizing member (530), or other components may be formed.
  • the pressurizing body (531) is coupled with the pressurizing arm (532), and a pressurizing hollow (533) is formed.
  • the pressurizing body (531) is coupled with the pressurizing member coupling portion (511).
  • the pressurizing body (531) surrounds the pressurizing member coupling portion (511) radially outside and can be coupled with the pressurizing member coupling portion (511). In one embodiment, as described above, the pressurizing body (531) can be hook-coupled with the pressurizing member coupling portion (511).
  • the pressurizing body (531) may have a shape corresponding to the shape of the first operating body (510).
  • the pressurizing body (531) has an annular cross-section with a pressurizing hollow (533) formed therein, and is a three-dimensional shape having a length in the front-back direction.
  • the outer periphery of the pressurizing body (531) is connected to the pressurizing arm (532).
  • the pressurizing arm (532) is a portion of the load pressurizing member (530) that pressurizes the load (R).
  • the pressurizing arm (532) extends toward the load (R) accommodated in the load receiving portion (230). In the illustrated embodiment, the pressurizing arm (532) extends in the longitudinal direction of the first operating body (510), that is, in the forward-backward direction.
  • the pressurizing arm (532) is formed to protrude in the direction toward the load (R), in the illustrated embodiment, a forward end, compared to the pressurizing body (531).
  • the pressurizing arm (532) may be provided in any shape capable of pressurizing the load (R).
  • the pressurizing arm (532) is provided in a plate shape having a length in the front-back direction, a width in the left-right direction, and a thickness in the up-down direction.
  • a load receiving groove (532a) is formed recessed on the one side of the extension direction of the pressurized arm (532), i.e., the front end.
  • the load receiving groove (532a) is formed to be convex toward the direction opposite to the load (R), i.e., the rear side in the illustrated embodiment.
  • the outer surface of the load (R) accommodated in the load accommodation groove (532a) can be stably supported by the inner surface of the pressure arm (532) surrounding the load accommodation groove (532a).
  • a plurality of pressurizing arms (532) may be provided.
  • the plurality of pressurizing arms (532) may be arranged at different positions to pressurize the load (R), respectively.
  • the pressurizing arms (532) are provided in pairs and are spaced apart in the height direction of the load pressurizing member (530), i.e., in the up-down direction.
  • the space formed between the pair of pressurizing arms (532) may be defined as a spaced apart space (534).
  • the pressurized hollow (533) is a space formed inside the pressurized body (531).
  • the pressurized hollow (533) accommodates the pressurized member coupling portion (511).
  • the pressurized member coupling portion (511) is elastically deformed and accommodated in the pressurized hollow (533), and can elastically support the pressurized body (531).
  • the pressurized member coupling portion (511) can be elastically coupled with the pressurized body (531).
  • the pressurized hollow (533) may have a shape corresponding to the shape of the pressurized body (531).
  • the pressurized hollow (533) is formed as a three-dimensional space having a circular cross-section and a length in the front-back direction.
  • Each side of the pressurized hollow (533) in the longitudinal direction is formed open and communicates with the outside.
  • the pressurized hollow (533) can accommodate a pressurized member coupling portion (511).
  • the second operating member (600) coupled with the first operating member (500) can penetrate the pressurized hollow (533) and move to the insertion screw (100) or the compression nut member (300).
  • the separation space (534) can be defined as a space between a pair of pressurizing arms (532).
  • the separation space (534) is defined by being surrounded by a pair of pressurizing arms (532).
  • the separation space (534) extends in the longitudinal direction of the pressurizing arms (532), in the front-back direction in the illustrated embodiment.
  • One longitudinal side of the separation space (534), in the illustrated embodiment, the front side is formed open and communicates with the load receiving portion (230).
  • the other longitudinal side of the separation space (534), in the illustrated embodiment, the rear side is formed open and communicates with the pressurizing cavity (533).
  • the separation space (534) constitutes a work space that movably accommodates the second operating member (600).
  • the operating screw thread (540) is a portion where the first operating member (500) is screw-connected to the extension member (400).
  • the operating screw thread (540) is formed on a portion of the outer circumference of the first operating body (510).
  • the operating screw thread (540) extends in a spiral shape along the outer circumference of the first operating body (510).
  • the operating screw thread (540) is located on one side of the longitudinal direction of the first operating body (510), i.e., on the rear side. At this time, the operating screw thread (540) may be located on the front side compared to the first operating tail (520). Accordingly, the first operating tail (520) may be located on the outer side of the extension hollow (420), and the operating screw thread (540) may be screw-connected with the extension screw thread (460).
  • the operating screw thread (540) can be extended by a predetermined length along the longitudinal direction of the first operating body (510), i.e., the front-back direction.
  • the length of the operating screw thread (540) can be formed to correspond to the length of the extension screw thread (460).
  • the movement distance of the first operating member (500) can be determined according to the length of the operating screw thread (540) or the extension screw thread (460).
  • the manipulation cavity (550) is a space formed inside the first manipulation body (510).
  • the manipulation cavity (550) movably accommodates the second manipulation member (600).
  • the manipulation cavity (550) is defined by being surrounded by the inner circumference of the first manipulation body (510).
  • the operating hollow (550) extends in the extension direction of the first operating body (510), in the forward and backward directions in the illustrated embodiment.
  • One longitudinal side of the operating hollow (550), in the illustrated embodiment, the front side is open and communicates with the pressurized hollow (533) and the separation space (534), respectively.
  • the other longitudinal side of the operating hollow (550), in the illustrated embodiment, the rear side is open and communicates with the operating body receiving portion (521).
  • the manipulation hollow (550) may have a shape corresponding to the shape of the second manipulation member (600).
  • the manipulation hollow (550) is formed as a cylindrical space having a circular cross-section and a length in the front-back direction.
  • the second operating member (600) can be moved toward the insertion screw (100) and engaged with the insertion screw (100).
  • the second operating member (600) can apply a rotational force to secure the insertion screw (100) to the spine.
  • the second operating member (600) can be coupled with the compression nut member (300).
  • the second operating member (600) can apply a rotational force to move the compression nut member (300) to pressurize the load (R).
  • the second operating element (600) performs the role of a driver.
  • the second operating member (600) is movably coupled to the first operating member (500).
  • the second operating member (600) is movably received in the operating cavity (550), so that its radial direction can be supported by the first operating body (510).
  • the second operating member (600) can be moved in the longitudinal direction of the first operating member (500), in the forward and backward direction in the illustrated embodiment.
  • the second operating member (600) includes a second operating body (610), a second operating tail (620), a nut coupling portion (630), and a washer member (640).
  • the second operating body (610) constitutes a portion of the outer shape of the second operating member (600).
  • the second operating body (610) is coupled with or supports other components of the second operating member (600).
  • the second operating body (610) is coupled with the second operating tail (620), the nut coupling portion (630), and the washer member (640).
  • the second manipulating body (610) can extend in the longitudinal direction of the first manipulating body (510), in the forward and backward direction in the illustrated embodiment. As described above, the second manipulating body (610) extends in the same direction as the first manipulating body (510).
  • the second manipulation body (610) is movably received in the manipulation cavity (550).
  • the second manipulation body (610) can be moved in its longitudinal direction, in the forward and backward direction in the illustrated embodiment. At this time, the second manipulation body (610) can be moved in the longitudinal direction without a separate rotation.
  • the second manipulation body (610) can be movably supported by the inner circumference of the first manipulation body (510).
  • the second operating body (610) may have a shape corresponding to the shape of the operating hollow (550).
  • the second operating body (610) is formed to have a circular cross-section and a length in the front-rear direction.
  • the nut coupling portion (630) can rotate smoothly while being coupled with the insertion screw (100) or the compression nut member (300).
  • the diameter of the cross-section of the second operating body (610) can be formed to be less than or equal to the diameter of the cross-section of the operating hollow (550).
  • the second manipulating body (610) is coupled with the second manipulating tail (620).
  • One longitudinal side of the second manipulating body (610), the rear side in the illustrated embodiment, is coupled with the second manipulating tail (620).
  • the second operating body (610) is coupled with the nut coupling portion (630).
  • the other side in the longitudinal direction of the second operating body (610), the front side in the illustrated embodiment, is coupled with the nut coupling portion (630).
  • the second operating body (610) is coupled with the washer member (640).
  • the second operating body (610) is penetratingly coupled to the washer member (640).
  • the second operating body (610) is pressed radially inward by the washer member (640), so that it cannot be moved or rotated arbitrarily in the operating cavity (550).
  • the second manipulation tail (620) is a portion of the second manipulation member (600) that is manipulated by an external force.
  • the second manipulation tail (620) may be positioned so as to be exposed to the outside of the invasion site.
  • An operator or any device may grasp the second manipulation tail (620) and apply an external force.
  • a linear external force for moving the second manipulation tail (620) in the longitudinal direction or a rotational force for rotating the insertion screw (100) or the compression nut member (300) may be applied to the second manipulation tail (620).
  • the insertion screw (100) moves along the extension hollow (420), passes through the load receiving portion (230), and enters the insertion screw engaging portion (220).
  • the movement can be achieved by moving the second operating member (600) in which the nut engaging portion (630) is accommodated in the insertion screw opening (131).
  • the insertion screw head (130) is positioned in the insertion screw engaging portion (220), and the insertion screw body (110) is exposed to the outside of the anchor member (200).
  • FIGS. 22 and 23 a process in which a load (R) is pulled by a first operating member (500) is illustrated as an example. Before the above state is formed, a process in which the load (R) penetrates the load receiving portion (230) may precede. The load (R) penetrated through the load receiving portion (230) is positioned apart from the insertion screw head (130).
  • a process may be performed in which the first operating member (500) and the second operating member (600) are withdrawn from the extended hollow (420), the compression nut member (300) is received in the extended hollow (420), and then the first operating member (500) and the second operating member (600) are reinserted into the extended hollow (420).
  • the second operating member (600) coupled with the extension member (400) moves toward the compression nut member (300) so that the nut engaging portion (630) is inserted into the compression nut hollow portion (340).
  • the second operating tail (620) rotates, the compression nut threads (320) are screw-engaged with the anchor threads (240), so that the compression nut member (300) rotates and moves toward the load (R).
  • one side of the outer circumference of the rod (R) can be supported by the insertion screw head (130), and the other side of the rod (R) can be supported by the compression nut member (300).
  • Anchor body 220 Insert screw joint
  • Extension joint 300 Compression nut joint
  • Compression nut body 320 Compression nut thread
  • Extension member 410 Extension body
  • Extension hollow 430 Anchor member receiving area
  • Second operating body 620 Second operating tail

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

Abstract

L'invention concerne un ensemble vis pédiculaire. L'ensemble vis pédiculaire selon un aspect de la présente invention comprend : une vis d'insertion couplée à un pédicule ; un élément d'ancrage pour supporter de manière rotative la vis d'insertion ; un élément d'extension qui est couplé à l'élément d'ancrage et qui présente, sur l'intérieur, une partie creuse étendue passant à travers dans un sens ; et un premier élément d'actionnement couplé de façon mobile à l'élément d'extension. Une partie de réception de tige, qui est un espace en communication avec la partie creuse étendue et à travers laquelle passe une tige, est formée à l'intérieur de l'élément d'ancrage, et le premier élément d'actionnement peut être conçu pour se déplacer dans le sens et presser la tige vers la vis d'insertion.
PCT/KR2024/006608 2023-07-20 2024-05-14 Ensemble vis pédiculaire Pending WO2025018540A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20230094838 2023-07-20
KR10-2023-0094838 2023-07-20
KR1020230196482A KR20250015750A (ko) 2023-07-20 2023-12-29 척추경 나사못 조립체
KR10-2023-0196482 2023-12-29

Publications (1)

Publication Number Publication Date
WO2025018540A1 true WO2025018540A1 (fr) 2025-01-23

Family

ID=94281796

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2024/006608 Pending WO2025018540A1 (fr) 2023-07-20 2024-05-14 Ensemble vis pédiculaire

Country Status (1)

Country Link
WO (1) WO2025018540A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100061354A (ko) * 2008-11-28 2010-06-07 비이더만 모테크 게엠베하 ＆ 코. 카게 뼈 고정 요소에 로드를 결합하기 위하여 로드를 수용하기 위한 수용부와 이러한 수용부를 가진 뼈 고정 장치
KR100988306B1 (ko) * 2008-11-11 2010-10-18 오스템임플란트 주식회사 픽스쳐 식립시술용 드라이버
KR20120065938A (ko) * 2010-12-13 2012-06-21 비이더만 테크놀로지스 게엠베하 & 코. 카게 뼈 고정 장치
KR101419807B1 (ko) * 2012-09-12 2014-07-21 주식회사 지에스메디칼 최소 침습 수술 시스템용 작업 타워
US20210068875A1 (en) * 2016-12-29 2021-03-11 K2M, Inc. Rod Reducer Assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100988306B1 (ko) * 2008-11-11 2010-10-18 오스템임플란트 주식회사 픽스쳐 식립시술용 드라이버
KR20100061354A (ko) * 2008-11-28 2010-06-07 비이더만 모테크 게엠베하 ＆ 코. 카게 뼈 고정 요소에 로드를 결합하기 위하여 로드를 수용하기 위한 수용부와 이러한 수용부를 가진 뼈 고정 장치
KR20120065938A (ko) * 2010-12-13 2012-06-21 비이더만 테크놀로지스 게엠베하 & 코. 카게 뼈 고정 장치
KR101419807B1 (ko) * 2012-09-12 2014-07-21 주식회사 지에스메디칼 최소 침습 수술 시스템용 작업 타워
US20210068875A1 (en) * 2016-12-29 2021-03-11 K2M, Inc. Rod Reducer Assembly

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