WO2019047158A1 - 用于椎弓根螺钉的连接器和固定系统 - Google Patents

用于椎弓根螺钉的连接器和固定系统 Download PDF

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Publication number
WO2019047158A1
WO2019047158A1 PCT/CN2017/101035 CN2017101035W WO2019047158A1 WO 2019047158 A1 WO2019047158 A1 WO 2019047158A1 CN 2017101035 W CN2017101035 W CN 2017101035W WO 2019047158 A1 WO2019047158 A1 WO 2019047158A1
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WO
WIPO (PCT)
Prior art keywords
pedicle screw
connecting rod
connector
hole
connecting block
Prior art date
Application number
PCT/CN2017/101035
Other languages
English (en)
French (fr)
Inventor
张巍
唐佩福
袁森
张�浩
Original Assignee
张巍
唐佩福
袁森
张�浩
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 张巍, 唐佩福, 袁森, 张�浩 filed Critical 张巍
Priority to PCT/CN2017/101035 priority Critical patent/WO2019047158A1/zh
Publication of WO2019047158A1 publication Critical patent/WO2019047158A1/zh

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    • 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 disclosure relates to the field of medical devices and, in particular, to a connector and fixation system for a pedicle screw.
  • pedicle screws are widely used as a mature surgical device.
  • the rapid development of minimally invasive pedicle screw fixation in recent years has been widely used worldwide due to its small trauma and exact effect.
  • the main role of minimally invasive pedicle screw is to perform spinal reduction, stabilize the dynamic segment of the spine, promote the fusion of relevant segments, and also perform bone cement injection and fluid bone through pedicle screws. Bone grafting to achieve effective treatment of spinal injuries and fractures.
  • a plurality of universal pedicle screws can be disposed on the fixing rod of the anchor, and two fixing rods provided with pedicle screws are fixed by a transverse connector.
  • a minimally invasive bone grafting nail inserted into the vertebral body from the outside of the vertebral plate appears.
  • pedicle screw fixation generally needs to adapt to the human anatomy, while the structure of the traditional pedicle screw anchor is relatively fixed, resulting in its placement and placement.
  • the adjustment of the angle is relatively fixed, not flexible enough to adapt to different human anatomy, and thus may not achieve the best therapeutic effect.
  • embodiments of the present disclosure provide a connector for attaching a pedicle screw to a conventional pedicle screw anchor.
  • a connector for connecting a pedicle screw to a pedicle screw holder, the connector comprising:
  • connecting rod including opposite first and second ends
  • first connecting portion is detachably connected to the first end of the connecting rod
  • second connecting portion is disposed at least on the second end of the connecting rod
  • the second connecting portion includes: a vertical tooth formed on an outer surface at at least the second end of the connecting rod, wherein an extending direction of the vertical tooth is parallel to the connection The axis direction of the rod.
  • the first connection portion includes a first connection block and a second connection block, the first connection block and the second connection block being movable relative to clamp or release the pedicle screw fixation Device.
  • the connector further includes a drive component for driving relative movement of the first connection block and the second connection block.
  • the drive component includes a locking screw
  • the second connection block includes a threaded bore that engages the locking screw
  • the first connection block includes opposing first and second sides, the first side being closer to the connecting rod than the second side,
  • the first connection block further includes an engagement hole formed through the first side, the engagement hole for receiving the first end of the connecting rod.
  • the connector further includes a pressing piece for pressing the first end of the connecting rod onto the first connecting block.
  • the first connection block further includes an opposite first surface and a second surface, the second surface being closer to the second connection block than the first surface,
  • the first connection block further includes a tablet receiving portion formed in the first surface, the tablet receiving portion for accommodating the pressing piece.
  • the connector further includes a gasket
  • the tablet further includes a gasket receiving portion for receiving the gasket
  • the first connecting block includes a first through hole penetrating the connecting block in a direction perpendicular to an axial direction of the connecting rod
  • the connecting rod includes a second through hole formed at a first end of the connecting rod, the second through hole penetrating the connecting rod in a direction perpendicular to an axial direction of the connecting rod,
  • the first through hole and the second through hole are aligned such that the locking screw passes through the first connecting block and the connecting rod.
  • the first connecting block includes a first through hole penetrating the connecting block in a direction perpendicular to an axial direction of the connecting rod
  • the engagement hole, the tablet receiving portion, and the first through hole communicate with each other.
  • the second connecting portion is formed on an outer surface of the connecting rod, and a length of the second connecting portion extending in a direction parallel to an axial direction of the connecting rod is equal to or larger than the length One-half the length of the connecting rod.
  • the length of the connecting rod is in the range of 20 mm to 100 mm.
  • a pedicle screw fixation system comprising a fixture, a connector and at least one first pedicle screw, the connector being according to any of the above aspects or embodiments A connector for attaching the at least one first pedicle screw to the holder.
  • the fixture comprises at least one second pedicle screw
  • a predetermined angle is formed between an axis of the first pedicle screw and an axis of the second pedicle screw.
  • the pedicle screw can be fixed to the holder by a connector connection, which can be at a larger angle or from the outside than a conventional fixation system
  • the pedicle screw is placed to adapt to different human anatomy, so that a better therapeutic effect can be achieved.
  • a connector according to an embodiment of the present disclosure may be used to connect a support nail and a conventional pedicle screw system to form a space frame structure to enhance the surgical fixation effect.
  • FIG. 1 is a perspective view of a pedicle screw fixation system in accordance with an exemplary embodiment of the present disclosure
  • FIG. 2 is a front elevational view of a pedicle screw fixation system in accordance with an exemplary embodiment of the present disclosure
  • FIG. 3 is a perspective view of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 4 is a cross-sectional view of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 5 is a front elevational view of a first connection block of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 6 is a top plan view of a first connection block of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 7 is a partial cross-sectional view of a second connection block of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 8 is a top plan view of a second connection block of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 9 is a top plan view of a connecting rod of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure.
  • FIG. 10 is a front elevational view of a connecting rod of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 11 is a side view of a connecting rod of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 12 is a front elevational view of a locking screw of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 13 is a top plan view of a locking screw of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 14 is a top plan view of a tablet of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 15 is a front elevational view of a tablet of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 16 is a top plan view of a shim of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • 17 is a front elevational view of a shim of a pedicle screw connector, in accordance with an exemplary embodiment of the present disclosure
  • connection adapter 18 is a perspective view of a connection adapter in accordance with an exemplary embodiment of the present disclosure, schematically showing the connection of the connection adapter to a pedicle screw;
  • connection adapter 19 is a plan view of a connection adapter, schematically showing the connection of the connection adapter to a pedicle screw, in accordance with an exemplary embodiment of the present disclosure
  • 20 is a bottom view of an adapter body portion of a connection adapter, in accordance with an exemplary embodiment of the present disclosure
  • 21 is a front elevational view of an adapter body portion of a connection adapter, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 22 is a top plan view of an adapter body portion of a connection adapter, in accordance with an exemplary embodiment of the present disclosure
  • Figure 23 is a cross-sectional view of the adapter body portion taken along line B-B shown in Figure 22;
  • Figure 24 is a cross-sectional view of the adapter body portion taken along line A-A shown in Figure 21;
  • Figure 25 is a cross-sectional view of the adapter body portion taken along line C-C shown in Figure 23;
  • Figure 26 is an enlarged view of a portion I of Figure 24;
  • FIG. 27 is a front elevational view of a pressure bar screw connecting an adapter, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 28 is a front elevational view of a head of a connection adapter in accordance with an exemplary embodiment of the present disclosure
  • Figure 29 is a cross-sectional view of the movable head taken along line A-A shown in Figure 28;
  • FIG. 30 is a front elevational view of a lock nut of a connection adapter, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 31 is a front elevational view of a gasket connecting an adapter, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 32 is a top plan view of a gasket connecting an adapter, in accordance with an exemplary embodiment of the present disclosure
  • Figure 33 is an enlarged view of a portion I in Figure 31.
  • FIG. 34 is a schematic illustration of a pedicle screw, in accordance with an exemplary embodiment of the present disclosure.
  • first the terms “first”, “second”, etc. may be used herein to describe various components, components, elements, regions, layers, and/or portions, but these components, components, components, regions, layers And/or parts should not be limited by these terms. Instead, these terms are used to distinguish one component, component, component, region, layer and/or portion from another.
  • a first component, a first component, a first component, a first region, a first layer, and/or a first portion discussed below may be referred to as a second component, a second component, a second component, a second region The second layer and/or the second portion, without departing from the teachings of the present disclosure.
  • FIG. 1 shows a schematic structural view of a pedicle screw fixation system according to an exemplary embodiment of the present disclosure.
  • the pedicle screw fixation system includes a fixture 2, a pedicle screw connector 4, a connection adapter 6, at least one first pedicle screw 8, and at least one second pedicle screw 24 .
  • the fixture 2 includes a fixation rod 21, a transverse connector 22 and a second pedicle screw 24.
  • the crossbar 22 includes a crossbar rod 221 and a cross connector joint 222.
  • the second pedicle screw 24 is fixedly attached to the fixed rod 21 by a locking screw 26.
  • the holder 2 includes two fixed rods 21.
  • the two fixed rods 21 are arranged in parallel and connected together by a transverse connector 22.
  • the cross connector 22 includes two transverse connector joints 222, two transverse connector joints 222 are respectively connected to the two fixed rods 21, and the transverse link rod 221 connects the two transverse connector joints 222 together.
  • the two fixing bars 21 are connected together.
  • the fixture 2 can include a plurality of second pedicle screws 24 disposed on the fixation rod 21.
  • four second pedicle screws 24 are provided on the fixed rod 21.
  • the present disclosure does not limit the number of pedicle screws 24, for example, in other embodiments, fewer (e.g., 2, 3) or more (e.g., 5, 6) may be placed on the fixed rod 21.
  • One or more) second pedicle screws 24 are fixedly attached to the fixed rod 21 by a respective locking screw 26.
  • the second pedicle screw 24 can be a U-shaped pedicle screw.
  • the second pedicle screw 24 can also be other types of screws, such as a straight pedicle screw.
  • the anchor can be selected from pedicle screw anchors or fixtures conventional in the art, for a more detailed configuration of the anchor, reference can be made to pedicles conventional in the art. The specific structure of the screw holder or the fixing device will not be described herein.
  • a fixation system according to an embodiment of the present disclosure further includes a connector 4 for additionally fastening the first pedicle screw 8 to the holder 2 , specifically, the attachment is fixed to the holder 2 .
  • the fixing rod 21 is on.
  • a predetermined angle a is formed between the axis of the first pedicle screw 8 and the axis of the second pedicle screw 24.
  • the predetermined angle ⁇ may range from 10° to 50°, and more specifically, in some examples, the predetermined angle ⁇ may be 15°, 20° or 30°.
  • a pedicle screw in a pedicle screw fixation system according to an embodiment of the present disclosure, can be fixed to a fixture by a connector connection, which can be placed at a larger angle or from a more outer side than a conventional fixation system.
  • the pedicle screw is described to adapt to different human anatomy, so that a better therapeutic effect can be achieved.
  • FIG. 3 is a perspective view of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 4 is a cross-sectional view of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure.
  • the connector 4 It may include a first connecting portion 41 for releasably clamping on the pedicle screw holder 2, a connecting rod 42 including an opposite first end portion 421 and a second end portion 422 ( As shown in FIG. 10; and a second connecting portion 43 for detachably connecting to the first pedicle screw 8.
  • the first connecting portion 41 is detachably coupled to the first end portion 421 of the connecting rod 42
  • the second connecting portion 43 is disposed at least on the second end portion 422 of the connecting rod 42 .
  • the connector can be flexibly mounted on the pedicle screw holder.
  • the second connecting portion may be disposed at the second end of the connecting rod such that the first pedicle screw can be placed from a position relatively far from the holder so as to be able to be placed from the outer side
  • the pedicle screw is inserted to better adapt to different human anatomy, so that better therapeutic effect can be achieved.
  • the second attachment portion 43 includes vertical teeth 432 formed on an outer surface at at least a second end 422 of the connecting rod 42.
  • the direction in which the vertical teeth 432 extend is parallel to the axial direction A1 of the connecting rod 42 (as shown in FIG. 4).
  • the structure of the vertical teeth will be described in further detail below.
  • the first connecting portion 41 includes a first connecting block 411 and a second connecting block 412, and the first connecting block 411 and the second connecting block 412 are relatively movable to clamp or release the vertebral arch Root screw holder 2.
  • the connector 4 may further include a driving part 45 for driving the relative movement of the first connecting block 411 and the second connecting block 412.
  • the first connecting block 411 and the second connecting block 412 can clamp the fixing rod 21 of the pedicle screw holder 2;
  • the driving member 45 drives the first connecting block 411 and/or the second connecting block 412 to move away from each other, the first connecting block 411 and the second connecting block 412 can release the fixing rod 21 of the pedicle screw holder 2, thereby realizing the first A connecting portion 41 is releasably clamped to the fixing rod 21 of the pedicle screw holder 2.
  • the drive member includes a locking screw 45 that includes a threaded bore 4122 that can be threadedly engaged with the locking screw 45. In this manner, when the locking screw 45 moves in the threaded hole 4122, the second connecting block 412 can be driven to move toward or away from the first connecting block 411.
  • FIG. 5 is a front view of a first connection block of a pedicle screw connector according to an exemplary embodiment of the present disclosure
  • FIG. 6 is a first connection block of a pedicle screw connector according to an exemplary embodiment of the present disclosure.
  • Top view. 5 and 6, the first connecting block 411 includes an opposite first side 4111 and a second side 4112, the first side 4111 being closer to the connecting rod 42 than the second side 4112.
  • the first side surface 4111 is the right side surface of the first connection block 411
  • the second side surface 4112 is the left side surface of the first connection block 411.
  • the first connection block 411 may further include an engagement hole 4115 formed through the first side surface 4111 for receiving the first end portion 421 of the connecting rod 42.
  • the connector may further include a pressing piece 46 for pressing the first end portion 421 of the connecting rod 42 onto the first connecting block 411.
  • the first connection block 411 may further include an opposite first surface 4113 and a second surface 4114, which is closer to the second connection block 412 than the first surface 4113.
  • the first surface 4113 is the upper surface of the first connection block 411
  • the second surface 4114 is the lower surface of the second connection block 411.
  • the first connection block 411 further includes a tablet receiving portion 4116 formed in the first surface 4113, and the tablet receiving portion 4116 is for accommodating the pressing piece 46.
  • the cross-section of the tablet receiving portion 4116 may be in the shape of a dovetail, as shown in FIG.
  • FIG. 9 is a top plan view of a connecting rod of a pedicle screw connector according to an exemplary embodiment of the present disclosure
  • FIG. 10 is a front view of a connecting rod of a pedicle screw connector according to an exemplary embodiment of the present disclosure
  • 11 is a side view of a connecting rod of a pedicle screw connector according to an exemplary embodiment of the present disclosure.
  • the connecting rod 42 includes opposing first and second ends 421, 422.
  • the first connecting block 411 may further include a first through hole 4117 penetrating the connecting block 411 in an axial direction perpendicular to the connecting rod (ie, the A2 direction in FIG. 5).
  • FIG. 10 is a front view of a connecting rod of a pedicle screw connector according to an exemplary embodiment of the present disclosure
  • 11 is a side view of a connecting rod of a pedicle screw connector according to an exemplary embodiment of the present disclosure.
  • the connecting rod 42 includes opposing first and second ends 421, 422.
  • the connecting rod 42 includes a second through hole 423 formed at the first end portion 421 of the connecting rod 42, and the second through hole 423 penetrates the connecting rod 42 in a direction perpendicular to the axial direction of the connecting rod.
  • the first connecting block 411 and the connecting rod 42 are connected, the first through hole 4117 and the second through hole 423 are aligned, that is, the axis of the first through hole 4117 is aligned with the axis of the second through hole 423, and the locking screw 45 passes through.
  • the aligned first through hole 4117 and the second through hole 423 are then threadedly engaged with the threaded hole 4122 of the second connecting block 412, thereby achieving detachable connection of the connecting rod 42 with the first connecting portion 41.
  • FIG. 7 is a partial cross-sectional view of a second connection block of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 8 is a second connection block of a pedicle screw connector according to an exemplary embodiment of the present disclosure.
  • the second connecting block 412 includes a second connecting block main body portion in which a threaded hole 4122 and a through hole 4124 are formed, an axis of the threaded hole 4122 and a through hole 4124 The axes are aligned with each other.
  • the diameter of the through hole 4124 may be slightly larger than the diameter of the threaded hole 4122 to facilitate movement of the locking screw 45.
  • the first connection block 411 may include a first contact portion 4118 for contacting the fixing rod 21 of the pedicle screw holder 2, as shown in FIG. 5, the first contact portion 4118 is curved.
  • the second connection block 412 can include a second contact portion 4128 for contacting the fixation rod 21 of the pedicle screw fixture 2, as shown in Figure 7, the second contact portion 4128 being curved.
  • the arcuate first contact portion 4118 and the second contact portion 4128 cooperate to form a contact pedicle screw.
  • the connecting rod 42 includes a first end 421 and a second end 422.
  • a second through hole 423 into which the locking screw 45 is inserted is formed, and the second through hole 423 penetrates the connecting rod 42 in a direction perpendicular to the axial direction of the connecting rod.
  • a second connecting portion 43 is integrally formed.
  • the second connecting portion 43 is formed on the outer surface of the connecting rod 42.
  • the second connection portion 43 is formed at least on the outer surface of the second end portion 422 of the connecting rod 42.
  • the length of the connecting rod 42 is designed to be within a reasonable range.
  • the length of the connecting rod 42 is in the range of 20 mm to 100 mm.
  • the length of the connecting rod 42 is about 30 mm.
  • the connecting rod 42 is in a "three-stage" configuration, ie, as shown in FIG. 10, the connecting rod 42 includes a first stem portion 424, a second stem portion 425, and a third stem portion 426.
  • the first stem portion 424 includes the first end portion 421 described above, and the third stem portion 426 includes the second end portion 422 formed therebetween, and the second stem portion 425 is formed between the first stem portion 424 and the third stem portion 426.
  • the second through hole 423 is formed in the first rod portion 424.
  • the second connecting portion 43 is formed on the third rod portion 426, and a step portion 427 is formed between the second rod portion 425 and the third rod portion 426.
  • the second rod portion 425 and the third rod portion 426 each have a cylindrical shape, and the second rod portion 425 has a circular cross section of about 4 mm in diameter, and the third rod portion 426 has a cross section of about the diameter. 6mm round.
  • the second connecting portion 43 may include vertical teeth 432 formed on the outer surface of the connecting rod 42.
  • the extending direction of the vertical teeth 432 is parallel to the axial direction A1 of the connecting rod 42.
  • 30 vertical teeth 432 are evenly arranged along the circumferential direction thereof, that is, on the entire circumference of the outer surface of the connecting rod 42, uniformly distributed
  • Thirty vertical teeth 432, i.e., each adjacent two vertical teeth 432 are spaced apart by 12°.
  • the angle between the adjacent two tooth surfaces of each adjacent two vertical teeth 432 is about 60°, as shown in FIG. With such a vertical tooth design, the connection between the second connecting portion and other components can be made stronger.
  • the length of the second connecting portion 43 extending in a direction parallel to the axial direction A1 of the connecting rod 42 is equal to or greater than one-half of the length of the connecting rod 42.
  • the length of the connecting rod 42 is about 30 mm
  • the length of the second connecting portion 43 extends is about 20 mm.
  • the total length of the connecting rod 42 is about 30 mm
  • the length of the third rod portion 426 is about 20 mm
  • the length of the vertical teeth 432 extends is about 20 mm, that is, the vertical teeth 432 are on the outer surface of the entire third rod portion 426. Extend.
  • a connecting portion for connecting the first pedicle screw is formed on a majority of the length of the connecting rod, so that when the first pedicle screw is connected and fixed, it can be targeted to different human bodies.
  • the anatomical structure adjusts the placement of the first pedicle screw to better accommodate different human anatomy.
  • FIG. 12 is a front view of a locking screw of a pedicle screw connector according to an exemplary embodiment of the present disclosure
  • FIG. 13 is a top view of a locking screw of a pedicle screw connector according to an exemplary embodiment of the present disclosure.
  • the locking screw 45 can be a M4 x 0.5 type locking screw and is an inner six "petal" type screw.
  • the length of the locking screw 45 may range from 10 mm to 30 mm, for example, may be about 11 mm.
  • FIG. 14 is a top plan view of a tablet of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 15 is a front view of a tablet of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure.
  • the tab 46 can include a first side 461, a second side 462, a first surface 463, and a second surface 464.
  • the first side of the pressing piece 46 When the pressing piece 46 is placed in the tablet receiving portion 4116 of the first connecting block 411, the first side of the pressing piece 46
  • the surface 461 and the first surface 463 are respectively aligned with the first side surface 4111 and the first surface 4113 of the first connecting block 411, and the second side surface 462 and the second surface 464 of the pressing piece 46 respectively contact the side surface and the surface of the tablet receiving portion 4116.
  • the tab 46 may also include an engagement aperture 465 formed through the first side 461 of the tab for receiving the first end 421 of the connecting rod 42.
  • the pressing piece 46 may further include a through hole 467 penetrating the pressing piece 46 in the thickness direction of the pressing piece 46 (i.e., the direction A3 in Fig. 15).
  • the engagement hole 4115, the sheet receiving portion 4116, and the first through hole 4117 are in communication with each other.
  • the engaging hole 465 of the pressing piece 46 cooperates with the engaging hole 4115 of the first connecting block 411 to form a complete engaging hole to receive the connection.
  • the first end portion 421 of the rod 42; and the through hole 467 of the pressing piece 46 is engaged with the first through hole 4117 of the first connecting block 411 to form a complete through hole for the locking screw 45 to be inserted.
  • the cross-section of the tablet 46 may be in the shape of a dovetail. Accordingly, the cross section of the tablet receiving portion 4116 may be a dovetail shape as shown in FIG. With such a design, it is possible to ensure that the pressure piece is accurately positioned in the tablet receiving portion.
  • FIG. 16 is a top plan view of a shim of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure
  • FIG. 17 is a front view of a shim of a pedicle screw connector in accordance with an exemplary embodiment of the present disclosure.
  • the connector can also include a spacer 44 that can include a spacer through hole 442 for insertion of the locking screw 45. As shown in Figure 17, the spacer 44 can protrude upward.
  • the tablet 46 can also include a gasket receiving portion 466 for receiving the gasket 44.
  • a gasket receiving portion 466 for receiving the gasket 44.
  • the thickness of the tab 46 can be much greater than the thickness of the spacer 44.
  • the thickness of the tab 46 can be greater than at least twice the thickness of the spacer 44.
  • the thickness of the tab 46 can be about 2.5. Mm
  • the thickness of the spacer 44 may be about 0.3 mm.
  • connection adapter 6 for connecting the first pedicle screw 8 and the connector 4 .
  • connection adapter 6 may include an adapter body portion 61, a plunger screw 63, a movable head 64, a lock nut 65, and a spacer 66.
  • connection adapter 6 includes an adapter body portion 61 in which a fitting connection portion 62 is formed for fitting and connecting the second connection portion 43 of the connector 4.
  • the mating connection portion 62 includes a mating receptacle 621 formed in the adapter body portion 61 for receiving a second connection portion 43 formed on the connecting rod 42, for example, a vertical tooth 432 . That is, when the connecting rod 42 of the connector 4 is inserted into the mating jack 621, the axial direction of the mating jack 621 is parallel to the axial direction A1 of the connecting rod, and the vertical teeth 432 are inserted into the mating jack 621. The connector 4 and the connection adapter 6 can be engaged by the cooperation of the vertical teeth 432 and the mating jacks 621.
  • FIG. 27 is a front view of a plunger rod of a connection adapter according to an exemplary embodiment of the present disclosure.
  • the mating connecting portion 62 may further include a screw insertion hole 622 formed in the adapter main body portion 61.
  • the extending direction of the screw insertion hole 622 is perpendicular to the axial direction of the mating insertion hole 621, and the screw insertion hole 622 is
  • the mating jack 621 is in communication, and the inner surface of the screw jack 622 is formed with a thread for receiving the bar screw 63.
  • the second connecting portion 43 is inserted into the mating insertion hole 621, and the plunger screw 63 is screwed into the screw insertion hole 622 until the end portion of the plunger rod 63 contacts the second connecting portion 43 in this manner.
  • the connector 4 is connected to the connection adapter 6.
  • the plunger screw 63 includes a threaded end 631 that includes at least one recess 6312 for engaging the vertical tooth 432.
  • the recess 6312 receives the raised vertical teeth 432.
  • the plunger screw 63 can firmly press the connector 4 into the mating jack 621.
  • the threaded end 631 can include at least two recesses 6312 for engaging the vertical teeth 432, each recess 6312 receiving a raised vertical tooth 432, respectively.
  • the angle ⁇ between the opposing two surfaces of the recess 6312 can be about 120°, as shown in FIG.
  • the matching vertical teeth may be formed on the inner surface of the mating jack 621, the extending direction of the mating vertical teeth is parallel to the axial direction of the mating jack 621, and the mating vertical teeth engage the vertical teeth 432, In order to make the connector 4 and the connection adapter 6 better joined together.
  • connection adapter 6 includes a movable head 64.
  • the adapter main body portion 61 is formed with a movable insertion hole 611 for receiving the movable head 64.
  • the extension direction of the movable insertion hole 611 is perpendicular to the engagement insertion hole.
  • the movable head 64 includes a universal joint portion 641 formed at the end of the movable head.
  • the head jack 611 includes a first head jack portion 6111.
  • the universal joint portion 641 has a spherical head shape
  • the first movable head insertion portion 6111 has a circular cross section, and the first movable end insertion portion 6111 receives the universal joint portion 641.
  • the movable head 64 can be rotated in the adapter main body portion 61 at a wide range of angles.
  • the head 64 can also include a head body portion 642. Accordingly, the head jack 611 includes a second head jack portion 6112. In one example, the cross section of the head body portion 642 and the cross section of the second head insertion portion 6112 are both approximately racetrack-shaped, as shown in FIG. 29, the second head insertion portion 6112 receives the head body. Part 642.
  • the movable head 64 may further include a third through hole 644 that penetrates the universal joint portion 641 and the movable head main portion 642 along the longitudinal direction of the movable head 64.
  • the third through hole 644 receives the first pedicle screw 8, that is, the third through hole 644 is mated with the first pedicle screw 8 to connect the first pedicle screw 8 to the connection adapter 6.
  • the head 64 can also include a locking thread 6422 formed on the outer surface of the head body portion 642, as shown in FIG.
  • a locking thread 6422 is used to engage the lock nut 65.
  • a locking thread 28 may be formed on one end of the head body portion 642 away from the universal joint portion 641.
  • the length of the locking thread 28 in the axial direction of the third through hole 644 (length L1 in FIG. 28) may be in the range of 3 mm to 6 mm, for example, about 4.7 mm.
  • FIG. 30 is a front view of a lock nut of a connection adapter according to an exemplary embodiment of the present disclosure.
  • the lock nut 65 can be a hex nut.
  • the lock nut 65 can have an internal thread having a diameter of 8 mm to engage the locking threads 6422 formed on the outer surface of the head body portion 642.
  • the first pedicle screw 8 when the first pedicle screw 8 is inserted, the first pedicle screw 8 can be inserted into the third through hole 644, and then the movable head 64 can be rotated in the head main body portion 642 to be universally adjusted.
  • the lock nut 65 can be tightened on the locking thread 6422 to prevent the movable head 64 from rotating in the head main body portion 642, thereby fixing the first vertebra.
  • the "predetermined angle" herein may be a predetermined insertion angle designed according to different human anatomy.
  • FIG. 31 is a front view of a gasket of a connection adapter according to an exemplary embodiment of the present disclosure
  • FIG. 32 is a plan view of a gasket of the connection adapter according to an exemplary embodiment of the present disclosure
  • FIG. 33 is a portion of the portion I of FIG. Enlarged image.
  • the cross section of the spacer 66 has a shape similar to "raceway”.
  • the gasket 66 may have a through hole 662 extending through its thickness.
  • the cross section of the through hole 662 also has an approximate "racetrack" shape for receiving the head main body portion 642, that is, the shape and size of the through hole 662 are respectively associated with the movable head.
  • the shape and size of the main body portion 642 are matched.
  • a plurality of racks 6423 are formed on the upper surface of the head main body portion 642, and the extending direction of the racks 6423 is perpendicular to the axis of the head insertion hole 611.
  • a plurality of mating racks 663 are formed on at least a portion of the lower surface of the spacer 66, for example, the intermediate portion.
  • the rack 6423 has a rack parameter having a root radius R1 of about 6 mm, a addendum circle radius R2 of about 6.4 mm, and a tooth height H1 of about 0.4 mm between adjacent teeth.
  • the bottom width W1 of the recess is about 0.12 mm.
  • the mating rack 663 has the following rack parameters: the tip radius R1' is about 6 mm, the root radius R2' is about 6.4 mm, the tooth height H1' is about 0.4 mm, and the adjacent two teeth The bottom width W1' of the recess between them is about 0.12 mm.
  • the angle ⁇ 1 or ⁇ 1' between the opposing surfaces of the adjacent two teeth is about 60°, and the angle ⁇ 2 or ⁇ 2' between the adjacent two teeth is about 6°.
  • connection assembly which may include a connector 4 and a connection adapter 6.
  • the connector 4 may be a connector according to any one of the embodiments or examples described above.
  • the connection adapter 6 may be a connection adapter according to any of the above embodiments or examples.
  • the first pedicle screw 8 can be identical to the second pedicle screw 24. In certain embodiments, the first pedicle screw 8 can be different than the second pedicle screw 24.
  • FIG. 34 is a schematic illustration of a pedicle screw, in accordance with an exemplary embodiment of the present disclosure.
  • the first pedicle screw 8 can include a first threaded section 81, a second threaded section 83, a spacer section 82, a cylindrical section 84, and a staple tail 85.
  • the first pedicle screw 8 has a hollow hollow hollow cavity inside, the first thread segment 81 is located at the front end of the first pedicle screw 8, and the second thread segment 83 is located at the first pedicle screw 8 In the intermediate portion, the first thread segment 81 and the second thread segment 83 are spaced apart to form a non-threaded spacer segment 82.
  • the rear end of the second thread segment 83 is provided as a cylindrical section 84 and a nail tail 85 which are sequentially connected.
  • the first thread segment 81 has a conical shape, and the cross-sectional size of the first thread segment 81 gradually increases from front to back; the rear end of the first thread segment 81 smoothly transitions with the spacer segment 82,
  • the diameter of the second thread segment 83 is equal to the diameter of the rear end of the first thread segment 81.
  • Both the spacer 82 and the second thread segment 83 have a cylindrical configuration.
  • the taper ⁇ 3 of the cone of the first thread segment 81 is about 14°.
  • the rear end diameter of the first thread segment 81 and the major diameter of the second thread segment 83 are about 6 mm.
  • the pitch of the first thread segment 81 and the second thread segment 83 may be the same, for example both 2 mm. In another example, the pitch of the first thread segment 81 and the second thread segment 83 may be different.
  • the length of the first pedicle screw 8 (ie the length H2 in FIG. 34) may be 180 mm to 200 mm, for example 185 mm, 190 mm or 195 mm; the second thread segment 83 The distance from the rear end to the front end portion of the first pedicle screw 8 (i.e., the length L2 in Fig. 34) may be 35 mm to 55 mm, for example, 40 mm, 45 mm, 50 mm.
  • the direction of the insertion space can be conveniently adjusted at the time of nailing, and the holding force is provided by the second threaded section after the insertion, and the insertion is ensured.
  • the stability of the screw since the intermediate section is unthreaded, the direction of the insertion space can be conveniently adjusted at the time of nailing, and the holding force is provided by the second threaded section after the insertion, and the insertion is ensured.
  • the connector may be directly coupled to the first pedicle screw, ie, the connector directly connects the first pedicle screw to the fixture in such a manner It is also possible to insert the first pedicle screw from a distance farther from the anchor (ie, the outer side) to avoid damage to the spine when the first pedicle screw is placed.

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Abstract

一种连接器(4)，用于连接椎弓根螺钉(8)与椎弓根螺钉固定器(2)。连接器(4)包括：第一连接部(41)，用于可释放地夹紧在椎弓根螺钉固定器(2)上；连接杆(42)，包括相对的第一端部(421)和第二端部(422)；和第二连接部(43)，用于可拆卸地连接至椎弓根螺钉(8)。第一连接部(41)可拆卸地连接至连接杆(42)的第一端部(421)，第二连接部(43)设置在邻近连接杆(42)的至少第二端部(422)的位置处。还提供了一种椎弓根螺钉固定系统。

Description

用于椎弓根螺钉的连接器和固定系统 技术领域
本公开涉及医疗器械领域，具体地，涉及一种用于椎弓根螺钉的连接器和固定系统。
背景技术
在脊椎外科手术中，椎弓根螺钉作为一种成熟的手术装置，得到广泛的应用。尤其是近年来迅速发展的微创椎弓根螺钉固定技术，因创伤小、效果确切，已在全世界范围内广泛应用。在脊柱损伤、骨折治疗中，微创椎弓根螺钉的主要作用是进行脊柱复位、稳定脊柱的动力节段、促进相关节段融合，同时还可以通过椎弓根螺钉进行骨水泥注入和液体骨植骨，以达到脊柱损伤、骨折的有效治疗。
在传统的椎弓根螺钉固定器中，在固定器的固定棒上可以设置多个万向的椎弓根螺钉，两个设置有椎弓根螺钉的固定棒通过横连器连接固定。在临床实践中，为了增强固定效果，在传统的椎弓根钉棒技术的基础上，出现了从椎板外侧置入椎体的微创植骨支撑钉。
但是，在实施微创椎弓根螺钉内固定术时，椎弓根螺钉固定器一般需要适应人体解剖结构，而传统的椎弓根螺钉固定器的结构比较固定，造成其置入位置和置入角度的调整都比较固定，不够灵活，难以适应不同的人体解剖结构，从而可能无法实现最佳的治疗效果。
发明内容
为了解决上述技术问题中的至少一个方面，本公开的实施例提供一种连接器，用于将椎弓根螺钉连接至传统的椎弓根螺钉固定器上。
根据本公开的一个方面，提供一种连接器，用于连接椎弓根螺钉与椎弓根螺钉固定器，所述连接器包括：
第一连接部，用于可释放地夹紧在所述椎弓根螺钉固定器上；
连接杆，所述连接杆包括相对的第一端部和第二端部；和
第二连接部，用于可拆卸地连接至所述椎弓根螺钉，
其中，所述第一连接部可拆卸地连接至所述连接杆的第一端部，所述第二连接部至少设置在所述连接杆的第二端部上。
根据一些实施例，所述第二连接部包括：形成在所述连接杆的至少所述第二端部处的外表面上的竖齿，其中，所述竖齿的延伸方向平行于所述连接杆的轴线方向。
根据一些实施例，所述第一连接部包括第一连接块和第二连接块，所述第一连接块和所述第二连接块能够相对运动以夹紧或释放所述椎弓根螺钉固定器。
根据一些实施例，所述连接器还包括驱动部件，用于驱动所述第一连接块和所述第二连接块相对运动。
根据一些实施例，所述驱动部件包括锁紧螺钉，所述第二连接块包括螺纹孔，所述螺纹孔与所述锁紧螺钉接合。
根据一些实施例，所述第一连接块包括相对的第一侧面和第二侧面，所述第一侧面比所述第二侧面更靠近所述连接杆，
所述第一连接块还包括贯穿所述第一侧面形成的接合孔，所述接合孔用于接收所述连接杆的第一端部。
根据一些实施例，所述连接器还包括压片，用于挤压所述连接杆的第一端部至所述第一连接块上。
根据一些实施例，所述第一连接块还包括相对的第一表面和第二表面，所述第二表面比所述第一表面更靠近所述第二连接块，
所述第一连接块还包括形成在所述第一表面中的压片容纳部，所述压片容纳部用于容纳所述压片。
根据一些实施例，所述连接器还包括垫片，所述压片还包括垫片容纳部，用于容纳所述垫片。
根据一些实施例，所述第一连接块包括沿垂直于所述连接杆的轴线方向贯穿所述连接块的第一贯通孔，
所述连接杆包括形成在所述连接杆的第一端部处的第二贯通孔，所述第二贯通孔沿垂直于所述连接杆的轴线方向贯穿所述连接杆，
所述第一贯通孔和所述第二贯通孔对齐，使得所述锁紧螺钉穿过所述第一连接块和所述连接杆。
根据一些实施例，所述第一连接块包括沿垂直于所述连接杆的轴线方向贯穿所述连接块的第一贯通孔，
所述接合孔、所述压片容纳部和所述第一贯通孔相互连通。
根据一些实施例，所述第二连接部形成在所述连接杆的外表面上，并且所述第二连接部在平行于所述连接杆的轴线方向的方向上延伸的长度等于或大于所述连接杆的长度的二分之一。
根据一些实施例，所述连接杆的长度在20mm～100mm的范围内。
根据本公开的另一方面，还提供一种椎弓根螺钉固定系统，包括固定器、连接器和至少一个第一椎弓根螺钉，所述连接器为根据上述方面或实施例中任一个所述的连接器，所述连接器用于将所述至少一个第一椎弓根螺钉连接至所述固定器上。
根据一些实施例，所述固定器包括至少一个第二椎弓根螺钉，
所述第一椎弓根螺钉的轴线与所述第二椎弓根螺钉的轴线之间形成预定的夹角。
在根据本公开实施例的连接器和椎弓根螺钉固定系统中，椎弓根螺钉可以通过连接器连接固定至固定器上，与传统的固定系统相比，能够以更大角度或从更外侧置入所述椎弓根螺钉，以适应不同的人体解剖结构，从而能够实现较佳的治疗效果。另外，根据本公开实施例的连接器可以用于连接支撑钉和传统椎弓根钉棒系统，形成空间框架结构，以增强手术固定效果。
附图说明
通过下文中参照附图对本公开所作的描述，本公开的其它目的和优点将显而易见，并可帮助对本公开有全面的理解。
需要说明的是，各附图并不一定按比例来绘制，而是仅以不影响读者理解的示意性方式示出。
图1是根据本公开的示例性实施例的椎弓根螺钉固定系统的立体图；
图2是根据本公开的示例性实施例的椎弓根螺钉固定系统的主视图；
图3是根据本公开的示例性实施例的椎弓根螺钉连接器的立体图；
图4是根据本公开的示例性实施例的椎弓根螺钉连接器的截面图；
图5是根据本公开的示例性实施例的椎弓根螺钉连接器的第一连接块的主视图；
图6是根据本公开的示例性实施例的椎弓根螺钉连接器的第一连接块的俯视图；
图7是根据本公开的示例性实施例的椎弓根螺钉连接器的第二连接块的局部剖视图；
图8是根据本公开的示例性实施例的椎弓根螺钉连接器的第二连接块的俯视图；
图9是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的俯视图；
图10是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的主视图；
图11是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的侧视图；
图12是根据本公开的示例性实施例的椎弓根螺钉连接器的锁紧螺钉的主视图；
图13是根据本公开的示例性实施例的椎弓根螺钉连接器的锁紧螺钉的俯视图；
图14是根据本公开的示例性实施例的椎弓根螺钉连接器的压片的俯视图；
图15是根据本公开的示例性实施例的椎弓根螺钉连接器的压片的主视图；
图16是根据本公开的示例性实施例的椎弓根螺钉连接器的垫片的俯视图；
图17是根据本公开的示例性实施例的椎弓根螺钉连接器的垫片的主视图；
图18是根据本公开的示例性实施例的连接适配器的立体图，其中示意性示出了所述连接适配器与椎弓根螺钉的连接；
图19是根据本公开的示例性实施例的连接适配器的平面图，其中示意性示出了所述连接适配器与椎弓根螺钉的连接；
图20是根据本公开的示例性实施例的连接适配器的适配器主体部的仰视图；
图21是根据本公开的示例性实施例的连接适配器的适配器主体部的主视图；
图22是根据本公开的示例性实施例的连接适配器的适配器主体部的俯视图；
图23是适配器主体部沿图22中示出的B-B线截取的剖视图；
图24是适配器主体部沿图21中示出的A-A线截取的剖视图；
图25是适配器主体部沿图23中示出的C-C线截取的剖视图；
图26是图24中I部分的放大图；
图27是根据本公开的示例性实施例的连接适配器的压棒螺钉的主视图；
图28是根据本公开的示例性实施例的连接适配器的活头的主视图；
图29是活头沿图28中示出的A-A线截取的剖视图；
图30是根据本公开的示例性实施例的连接适配器的锁紧螺母的主视图；
图31是根据本公开的示例性实施例的连接适配器的垫片的主视图；
图32是根据本公开的示例性实施例的连接适配器的垫片的俯视图；
图33是图31中I部分的放大图；和
图34是根据本公开的示例性实施例的一种椎弓根螺钉的示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
由于本公开实施例所涉及的各结构尺寸非常微小，为了清楚起见，除非另有明确说明，本公开实施例的附图中各结构的尺寸和比例均不代表实际的尺寸和比例。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。
需要说明的是，虽然术语“第一”、“第二”等可以在此用于描述各种部件、构件、元件、区域、层和/或部分，但是这些部件、构件、元件、区域、层和/或部分不应受到这些术语限制。而是，这些术语用于将一个部件、构件、元件、区域、层和/或部分与另一个相区分。因而，例如，下面讨论的第一部件、第一构件、第一元件、第一区域、第一层和/或第一部分可以被称为第二部件、第二构件、第二元件、第二区域、第二层和/或第二部分，而不背离本公开的教导。
另外，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者部件涵盖出现在该词后面列举的元件或者部件及其等同，而不排除其他元件或者部件。“连接” 或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。方向性术语“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
图1示出了根据本公开的示例性实施例的椎弓根螺钉固定系统的结构示意图。如图所示，所述椎弓根螺钉固定系统包括固定器2、椎弓根螺钉连接器4、连接适配器6、至少一个第一椎弓根螺钉8、以及至少一个第二椎弓根螺钉24。
参照图1，固定器2包括固定棒21、横连器22和第二椎弓根螺钉24。横连器22包括横连器杆221和横连器接头222。第二椎弓根螺钉24通过锁紧螺钉26固定连接在固定棒21上。
在图示的实施例中，固定器2包括2个固定棒21。2个固定棒21平行设置，通过横连器22连接在一起。具体地，横连器22包括2个横连器接头222，2个横连器接头222分别连接在2个固定棒21上，横连器杆221将2个横连器接头222连接在一起，从而将2个固定棒21连接在一起。
固定器2可以包括设置在固定棒21上的多个第二椎弓根螺钉24。在图1示出的实施例中，4个第二椎弓根螺钉24设置在固定棒21上。但是，本公开并不对椎弓根螺钉24的数量作出限制，例如，在其它实施例中，可以在固定棒21上设置更少(例如2个、3个)或更多(例如5个、6个或更多个)第二椎弓根螺钉24。每一个椎弓根螺钉24通过各自的锁紧螺钉26固定连接在固定棒21上。
作为一个示例，第二椎弓根螺钉24可以是U型椎弓根螺钉。但是，在其它的示例中，第二椎弓根螺钉24也可以是其它类型的螺钉，例如直型椎弓根螺钉。
本领域技术人员应理解，所述固定器可以从本领域中惯用的椎弓根螺钉固定器或固定装置中选择，所述固定器的更详细的结构，可以参照本领域中惯用的椎弓根螺钉固定器或固定装置的具体结构，在此不再赘述。
参照图1，根据本公开实施例的固定系统还包括连接器4，连接器4用于额外地将第一椎弓根螺钉8连接固定在固定器2上，具体地，连接固定在固定器2的固定棒21上。
如图2所示，在本公开的实施例中，第一椎弓根螺钉8的轴线与第二椎弓根螺钉24的轴线之间形成预定的夹角α。所述预定的夹角α的取值范围可以为10°至50°，更具体地，在一些示例中，所述预定的夹角α可以为15°、20°或30°。
在根据本公开实施例的椎弓根螺钉固定系统中，椎弓根螺钉可以通过连接器连接固定至固定器上，与传统的固定系统相比，能够以更大角度或从更外侧置入所述椎弓根螺钉，以适应不同的人体解剖结构，从而能够实现较佳的治疗效果。
图3是根据本公开的一个示例性实施例的椎弓根螺钉连接器的立体图，图4是根据本公开的示例性实施例的椎弓根螺钉连接器的截面图。结合图3和图4，连接器4 可以包括：第一连接部41，用于可释放地夹紧在所述椎弓根螺钉固定器2上；连接杆42，连接杆42包括相对的第一端部421和第二端部422(如图10所示)；和第二连接部43，用于可拆卸地连接至第一椎弓根螺钉8。所述第一连接部41可拆卸地连接至所述连接杆42的第一端部421，所述第二连接部43至少设置在所述连接杆42的第二端部422上。通过这样的连接方式，所述连接器能够灵活地安装在所述椎弓根螺钉固定器上。并且，所述第二连接部可以设置在所述连接杆的第二端部处，使得所述第一椎弓根螺钉能够从相对远离所述固定器的位置置入，从而能够从极外侧置入椎弓根螺钉，以更好地适应不同的人体解剖结构，从而能够实现较佳的治疗效果。
在一个示例中，如图3所示，第二连接部43包括：形成在连接杆42的至少第二端部422处的外表面上的竖齿432。竖齿432的延伸方向平行于连接杆42的轴线方向A1(如图4所示)。关于竖齿的结构将在下文中进一步详细描述。
在一个示例中，如图4所示，第一连接部41包括第一连接块411和第二连接块412，第一连接块411和第二连接块412能够相对运动以夹紧或释放椎弓根螺钉固定器2。具体地，连接器4还可以包括驱动部件45，用于驱动第一连接块411和第二连接块412相对运动。当驱动部件45驱动第一连接块411和/或第二连接块412朝向彼此运动时，第一连接块411和第二连接块412可以夹紧椎弓根螺钉固定器2的固定棒21；当驱动部件45驱动第一连接块411和/或第二连接块412远离彼此运动时，第一连接块411和第二连接块412可以释放椎弓根螺钉固定器2的固定棒21，从而实现第一连接部41可释放地夹紧在椎弓根螺钉固定器2的固定棒21上。
在图4示出的实施例中，所述驱动部件包括锁紧螺钉45，第二连接块412包括螺纹孔4122，螺纹孔4122可以与锁紧螺钉45螺纹接合。以此方式，当锁紧螺钉45在螺纹孔4122中运动时，可以驱动第二连接块412朝向或远离第一连接块411运动。
图5是根据本公开的示例性实施例的椎弓根螺钉连接器的第一连接块的主视图；图6是根据本公开的示例性实施例的椎弓根螺钉连接器的第一连接块的俯视图。结合图5和图6，第一连接块411包括相对的第一侧面4111和第二侧面4112，第一侧面4111比第二侧面4112更靠近所述连接杆42。在图5中，第一侧面4111为第一连接块411的右侧面，第二侧面4112为第一连接块411的左侧面。
在一个示例中，第一连接块411还可以包括贯穿所述第一侧面4111形成的接合孔4115，接合孔4115用于接收连接杆42的第一端部421。
返回参照图4，连接器还可以包括压片46，用于挤压连接杆42的第一端部421至第一连接块411上。
以此方式，将连接杆42的第一端部421插入接合孔4115中，压片46将插入的第一端部421压向第一连接块411上，然后使用锁紧螺钉45锁紧，从而实现连接杆42与第一连接部41的可拆卸连接。
参照图5，第一连接块411还可以包括相对的第一表面4113和第二表面4114，第二表面4114比第一表面4113更靠近第二连接块412。在图5中，第一表面4113为第一连接块411的上表面，第二表面4114为第二连接块411的下表面。第一连接块411还包括形成在第一表面4113中的压片容纳部4116，压片容纳部4116用于容纳压片46。在一个示例中，压片容纳部4116的横截面可以为燕尾形状，如图6所示。
图9是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的俯视图；图10是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的主视图；图11是根据本公开的示例性实施例的椎弓根螺钉连接器的连接杆的侧视图。结合图9、图10和图11，连接杆42包括相对的第一端部421和第二端部422。如图5和图6所示，第一连接块411还可以包括沿垂直于所述连接杆的轴线方向(即图5中的A2方向)贯穿连接块411的第一贯通孔4117。如图9所示，连接杆42包括形成在连接杆42的第一端部421处的第二贯通孔423，第二贯通孔423沿垂直于所述连接杆的轴线方向贯穿连接杆42。在连接第一连接块411和连接杆42时，第一贯通孔4117和第二贯通孔423对齐，即第一贯通孔4117的轴线与第二贯通孔423的轴线对齐，锁紧螺钉45穿过对齐的第一贯通孔4117和第二贯通孔423，然后螺纹接合第二连接块412的螺纹孔4122，从而实现连接杆42与第一连接部41的可拆卸连接。
图7是根据本公开的示例性实施例的椎弓根螺钉连接器的第二连接块的局部剖视图；图8是根据本公开的示例性实施例的椎弓根螺钉连接器的第二连接块的俯视图。结合图7和图8，第二连接块412包括第二连接块主体部，在所述第二连接块主体部中形成有螺纹孔4122和通孔4124，螺纹孔4122的轴线和通孔4124的轴线相互对齐。在一个示例中，通孔4124的直径可以略大于螺纹孔4122的直径，以方便锁紧螺钉45的运动。
返回参照图5，第一连接块411可以包括第一接触部4118，用于接触椎弓根螺钉固定器2的固定棒21，如图5所示，第一接触部4118呈弧形。参照图7，第二连接块412可以包括第二接触部4128，用于接触椎弓根螺钉固定器2的固定棒21，如图7所示，第二接触部4128呈弧形。参照图4，当第一连接块411和第二连接块412通过锁紧螺钉45连接在一起时，呈弧形的第一接触部4118和第二接触部4128相互配合，形成接触椎弓根螺钉固定器2的固定棒21的弧形接触部。通过这样的设置方式，增大了第一连接部与固定棒的接触面积，有利于连接器更牢固地夹紧在固定棒上。
下面，结合图9-11描述“连接杆”和“第二连接部”的具体结构。如图所示，连接杆42包括第一端部421和第二端部422。在连接杆42的第一端部421处，形成供锁紧螺钉45插入的第二贯通孔423，第二贯通孔423沿垂直于所述连接杆的轴线方向贯穿连接杆42。在连接杆42的第二端部422处，一体形成有第二连接部43。例如，第二连接部43形成在连接杆42的外表面上。在一个示例中，第二连接部43至少形成在连接杆42的第二端部422的外表面上。
根据本公开的实施例，连接杆42的长度被设计为合理的范围内。在一个示例中，连接杆42的长度在20mm～100mm的范围内。例如，连接杆42的长度为约30mm。通过合理地设计连接杆的长度，使得第一椎弓根螺钉与固定器之间的距离保持在预定的距离内，即，能够以预定的距离置入第一椎弓根螺钉，从而实现从距离固定器较远的距离处(即较外侧)置入第一椎弓根螺钉，避免置入第一椎弓根螺钉时损伤脊椎。
在一个示例中，连接杆42呈“三段式”结构，即，如图10所示，连接杆42包括第一杆部424、第二杆部425和第三杆部426。第一杆部424包括上述第一端部421，第三杆部426包括上述第二端部422，第二杆部425形成在第一杆部424和第三杆部426之间。上述第二贯通孔423形成在第一杆部424中，上述第二连接部43形成在第三杆部426上，第二杆部425与第三杆部426之间形成有台阶部427。在一个示例中，第二杆部425、第三杆部426均呈圆柱形状，并且，第二杆部425的横截面为直径约4mm的圆形，第三杆部426的横截面为直径约6mm的圆形。
如图9和图11所示，第二连接部43可以包括：形成在连接杆42的外表面上的竖齿432。竖齿432的延伸方向平行于连接杆42的轴线方向A1。在一个示例中，如图11所示，在连接杆42的外表面上，沿其圆周方向均匀布置有30个竖齿432，即，在连接杆42的外表面的整个圆周上，均布有30个竖齿432，即，每相邻的两个竖齿432之间间隔12°。在一个示例中，每相邻的两个竖齿432的相邻的两个齿表面之间的夹角为约60°，如图11所示。通过这样的竖齿设计，可以使得第二连接部与其它部件之间的连接更牢固。
在一个示例中，第二连接部43在平行于连接杆42的轴线方向A1的方向上延伸的长度等于或大于连接杆42的长度的二分之一。例如，连接杆42的长度为约30mm，第二连接部43延伸的长度为约20mm。在一个示例中，连接杆42的总长度为约30mm，第三杆部426的长度为约20mm，竖齿432延伸的长度为约20mm，即竖齿432在整个第三杆部426的外表面上延伸。
在本公开的实施例中，在所述连接杆的大部分长度上形成有用于连接第一椎弓根螺钉的连接部，这样，在连接固定第一椎弓根螺钉时，可以针对不同的人体解剖结构调节第一椎弓根螺钉的置入位置，从而能够更好地适应不同的人体解剖结构。
图12是根据本公开的示例性实施例的椎弓根螺钉连接器的锁紧螺钉的主视图；图13是根据本公开的示例性实施例的椎弓根螺钉连接器的锁紧螺钉的俯视图。结合图12和图13，锁紧螺钉45可以是M4×0.5型号的锁紧螺钉，并且为内六“花瓣”型螺钉。锁紧螺钉45的长度可以在10mm-30mm的范围内，例如，可以为约11mm。
图14是根据本公开的示例性实施例的椎弓根螺钉连接器的压片的俯视图；图15是根据本公开的示例性实施例的椎弓根螺钉连接器的压片的主视图。
如图所示，压片46可以包括第一侧面461、第二侧面462、第一表面463和第二表面464。当压片46置入第一连接块411的压片容纳部4116中时，压片46的第一侧 面461、第一表面463分别与第一连接块411的第一侧面4111、第一表面4113对齐，压片46的第二侧面462、第二表面464分别接触压片容纳部4116的侧面和表面。
压片46还可以包括贯穿压片的第一侧面461形成的接合孔465，接合孔465用于接收连接杆42的第一端部421。压片46还可以包括沿压片46的厚度方向(即图15中的方向A3)贯穿压片46的贯通孔467。
如图5所示，接合孔4115、压片容纳部4116和第一贯通孔4117相互连通。这样，当压片46置入第一连接块411的压片容纳部4116中时，压片46的接合孔465与第一连接块411的接合孔4115配合，形成完整的接合孔，以接收连接杆42的第一端部421；并且，压片46的贯通孔467与第一连接块411的第一贯通孔4117配合，以形成完整的贯通孔，以供锁紧螺钉45插入。
在图14示出的实施例中，压片46的横截面可以呈燕尾形状。相应地，压片容纳部4116的横截面可以为燕尾形状，如图6所示。通过这样的设计，可以确保压片准确地定位在压片容纳部中。
图16是根据本公开的示例性实施例的椎弓根螺钉连接器的垫片的俯视图；图17是根据本公开的示例性实施例的椎弓根螺钉连接器的垫片的主视图。结合图14-17，连接器还可以包括垫片44，垫片44可以包括垫片通孔442，用于供锁紧螺钉45插入。如图17所示，垫片44可以向上突起。
在一个示例中，压片46还可以包括垫片容纳部466，用于容纳垫片44。以此方式，当将垫片44置于垫片容纳部466中时，垫片通孔442、压片46的贯通孔467与第一连接块411的第一贯通孔4117均对齐，以供锁紧螺钉45插入。
在一个示例中，压片46的厚度可以远大于垫片44的厚度，例如，压片46的厚度可以大于垫片44的厚度的至少两倍，再例如，压片46的厚度可以为约2.5mm，垫片44的厚度可以为约0.3mm。
返回参照图1，根据本公开的示例性实施例，还提供一种连接适配器6，所述连接适配器6用于连接所述第一椎弓根螺钉8与连接器4。
根据一个示例，如图18和图19所示，连接适配器6可以包括适配器主体部61、压棒螺钉63、活头64、锁紧螺母65和垫片66。
图20是根据本公开的示例性实施例的连接适配器的适配器主体部的仰视图；图21是根据本公开的示例性实施例的连接适配器的适配器主体部的主视图；图22是根据本公开的示例性实施例的连接适配器的适配器主体部的俯视图；图23是适配器主体部沿图22中示出的B-B线截取的剖视图；图24是适配器主体部沿图21中示出的A-A线截取的剖视图；图25是适配器主体部沿图23中示出的C-C线截取的剖视图；图26是图24中I部分的放大图。结合图1以及图20-26，连接适配器6包括适配器主体部61，适配器主体部61中形成有配合连接部62，用于配合和连接连接器4的第二连接部43。
在一个示例中，如图23所示，配合连接部62包括形成在适配器主体部61中的配合插孔621，用于接收形成在连接杆42上的第二连接部43，例如，竖齿432。也就是说，当连接器4的连接杆42插入配合插孔621中时，配合插孔621的轴线方向平行于所述连接杆的轴线方向A1，竖齿432插入配合插孔621中。通过竖齿432与配合插孔621的配合，可以接合连接器4与连接适配器6。
图27是根据本公开的示例性实施例的连接适配器的压棒螺钉的主视图。结合图23和27，配合连接部62还可以包括形成在所述适配器主体部61中的螺钉插孔622，螺钉插孔622的延伸方向垂直于配合插孔621的轴线方向，螺钉插孔622与配合插孔621连通，并且螺钉插孔622的内表面上形成有螺纹，用于接收压棒螺钉63。这样，将第二连接部43插入配合插孔621中，将压棒螺钉63拧入螺钉插孔622中，直至压棒螺钉63的端部接触压紧第二连接部43，以此方式，可以将连接器4与连接适配器6连接在一起。
在一个示例中，如图27所示，压棒螺钉63包括螺纹端部631，螺纹端部631包括用于接合竖齿432的至少一个凹部6312。所述凹部6312接收凸起的竖齿432。以此方式，压棒螺钉63可以将连接器4牢固地压紧在配合插孔621中。可选择地，螺纹端部631可以包括用于接合竖齿432的至少两个凹部6312，每一个凹部6312分别接收一个凸起的竖齿432。
在一个示例中，凹部6312的相对的两个表面之间的夹角θ可以为约120°，如图27所示。
可替代地，配合插孔621的内表面上可以形成配合竖齿，所述配合竖齿的延伸方向平行于所述配合插孔621的轴线方向，所述配合竖齿接合所述竖齿432，以使得连接器4与连接适配器6更好地接合在一起。
图28是根据本公开的示例性实施例的连接适配器的活头的主视图；图29是活头沿图28中示出的A-A线截取的剖视图。结合图20、图28和图29，连接适配器6包括活头64，适配器主体部61中形成有用于接收活头64的活头插孔611，活头插孔611的延伸方向垂直于配合插孔621的轴线方向。
如图28所示，活头64包括形成在活头的端部处的万向连接部641。相应地，活头插孔611包括第一活头插孔部6111。万向连接部641呈球头形状，第一活头插孔部6111的横截面呈圆形形状，第一活头插孔部6111接收万向连接部641。通过万向连接部641与第一活头插孔部6111的配合，活头64可以在适配器主体部61中以大范围的角度旋转。
活头64还可以包括活头主体部642。相应地，活头插孔611包括第二活头插孔部6112。在一个示例中，活头主体部642的横截面和第二活头插孔部6112的横截面均呈近似跑道形形状，如图29所示，第二活头插孔部6112接收活头主体部642。
活头64还可以包括第三贯通孔644，所述第三贯通孔644沿活头64的长度方向贯通万向连接部641和活头主体部642。第三贯通孔644接收第一椎弓根螺钉8，即，第三贯通孔644与第一椎弓根螺钉8配合连接，以将第一椎弓根螺钉8连接至连接适配器6。
活头64还可以包括形成在活头主体部642的外表面上的锁紧螺纹6422，如图28所示。锁紧螺纹6422用于接合锁紧螺母65。锁紧螺纹28可以形成在活头主体部642远离万向连接部641的一端上。在一个示例中，锁紧螺纹28沿第三贯通孔644的轴线方向的长度(图28中的长度L1)可以在3mm～6mm的范围内，例如为约4.7mm。
图30是根据本公开的示例性实施例的连接适配器的锁紧螺母的主视图。在一个示例中，锁紧螺母65可以为六角螺母。在一个示例中，锁紧螺母65可以具有直径为8mm的内螺纹，以接合形成在活头主体部642的外表面上的锁紧螺纹6422。
以此方式，在置入第一椎弓根螺钉8时，可以将第一椎弓根螺钉8插入第三贯通孔644中，然后在活头主体部642中旋转活头64，以万向调整第一椎弓根螺钉8的置入角度。当第一椎弓根螺钉8的置入角度调整至预定角度时，可以锁紧螺母65拧紧在锁紧螺纹6422上，以阻止活头64在活头主体部642中旋转，从而固定第一椎弓根螺钉8。此处的“预定角度”可以是根据不同的人体解剖结构设计的预定置入角度。
图31是根据本公开的示例性实施例的连接适配器的垫片的主视图；图32是根据本公开的示例性实施例的连接适配器的垫片的俯视图；图33是图31中I部分的放大图。如图32所示，垫片66的横截面呈近似“跑道”的形状。垫片66可以具有贯通其厚度的通孔662，通孔662的横截面也呈近似“跑道”的形状，用于接收活头主体部642，即，通孔662的形状、尺寸分别与活头主体部642的形状、尺寸相配合。
返回参照图22和图24，活头主体部642的上表面上形成有多个齿条6423，所述齿条6423的延伸方向垂直于活头插孔611的轴线。参照图31，垫片66的下表面的至少一部分上，例如中间部分上，形成有多个配合齿条663。当垫片66置于活头主体部642上时，所述配合齿条663与所述齿条6423接合，以防止垫片66相对于活头主体部642滑动。
图26和图33分别示出了齿条6423和配合齿条663的局部放大图。如图26和33所示，多个齿条6423和多个配合齿条663可以相互接合。在一个示例中，齿条6423具有如下的齿条参数：齿根圆半径R1为约6mm，齿顶圆半径R2为约6.4mm，齿高H1为约0.4mm，相邻的两个齿之间的凹部的底部宽度W1为约0.12mm。相应地，配合齿条663具有如下的齿条参数：齿顶圆半径R1′为约6mm，齿根圆半径R2′为约6.4mm，齿高H1′为约0.4mm，相邻的两个齿之间的凹部的底部宽度W1′为约0.12mm。可选择地，相邻的两个齿的相对表面之间的夹角β1或β1′为约60°，相邻的两个齿之间的夹角β2或β2′为约6°。
根据本公开的示例性实施例，还提供一种连接组件，所述连接组件可以包括连接器4和连接适配器6。所述连接器4可以为根据上述任意一个实施例或示例所述的连接器。所述连接适配器6可以为根据上述任意一个实施例或示例所述的连接适配器。通过根据本公开实施例所述的连接组件，所述第一椎弓根螺钉能够从相对远离所述固定器的位置置入，从而能够从极外侧置入椎弓根螺钉，并且，所述第一椎弓根螺钉还能够通过所述活头万向调整其置入角度，以更好地适应不同的人体解剖结构，从而能够实现较佳的治疗效果。
返回参照图1，需要说明的是，在某些实施例中，所述第一椎弓根螺钉8可以与第二椎弓根螺钉24相同。在某些实施例中，所述第一椎弓根螺钉8可以与第二椎弓根螺钉24不相同。
图34是根据本公开的示例性实施例的一种椎弓根螺钉的示意图。第一椎弓根螺钉8可以包括第一螺纹段81、第二螺纹段83、间隔段82、圆柱体段84和钉尾85。第一椎弓根螺钉8内部具有轴向贯通的中空结构的空腔，第一螺纹段81位于第一椎弓根螺钉8的前端部，第二螺纹段83位于第一椎弓根螺钉8的中间部分，第一螺纹段81和第二螺纹段83之间相间隔形成没有螺纹的间隔段82。第二螺纹段83后端设置为依次连接的圆柱体段84和钉尾85。
在图34所示的实施例中，第一螺纹段81呈圆锥体状，第一螺纹段81的截面大小由前至后逐渐递增；第一螺纹段81的后端与间隔段82平滑过渡，第二螺纹段83的直径与第一螺纹段81的后端直径相等。间隔段82和第二螺纹段83均呈圆柱体结构。
在一个示例中，第一螺纹段81的圆锥体的锥度β3为约14°。
在一个示例中，第一螺纹段81的后端直径以及第二螺纹段83的大径为约6mm。
在一个示例中，第一螺纹段81和第二螺纹段83的螺距可以相同，例如均为2mm。在另一个示例中，第一螺纹段81和第二螺纹段83的螺距可以不相同。
为了适应不同人体椎弓根的尺寸，第一椎弓根螺钉8的长度(即图34中的长度H2)可以为180mm～200mm，例如，185mm、190mm或195mm；所述第二螺纹段83的后端至第一椎弓根螺钉8的前端部的距离(即图34中的长度L2)可以为35mm～55mm，例如，40mm、45mm、50mm。
通过根据本公开实施例的第一椎弓根螺钉，由于中间段无螺纹，可以在置钉时方便地调节置入空间方向，并且在置入后依靠第二螺纹段提供把持力，保证置入的螺钉的稳定性。
应该理解的是，在本公开的其它实施例中，连接器可以直接与第一椎弓根螺钉连接，即，所述连接器直接将第一椎弓根螺钉连接至固定器上，以此方式，也能够实现从距离固定器较远的距离处(即较外侧)置入第一椎弓根螺钉，避免置入第一椎弓根螺钉时损伤脊椎。
对于本公开的实施例，还需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，本公开的保护范围应以权利要求的保护范围为准。

Claims (15)

  1. 一种连接器，用于连接椎弓根螺钉(8)与椎弓根螺钉固定器(2)，其特征在于，所述连接器包括：
    第一连接部(41)，用于可释放地夹紧在所述椎弓根螺钉固定器(2)上；
    连接杆(42)，所述连接杆包括相对的第一端部(421)和第二端部(422)；和
    第二连接部(43)，用于可拆卸地连接至所述椎弓根螺钉(8)，
    其中，所述第一连接部(41)可拆卸地连接至所述连接杆(42)的第一端部(421)，所述第二连接部(43)至少设置在所述连接杆(42)的第二端部(422)上。
  2. 根据权利要求1所述的连接器，其特征在于，所述第二连接部(43)包括：形成在所述连接杆(42)的至少所述第二端部(422)处的外表面上的竖齿(432)，其中，所述竖齿的延伸方向平行于所述连接杆的轴线方向(A1)。
  3. 根据权利要求1或2所述的连接器，其特征在于，所述第一连接部(41)包括第一连接块(411)和第二连接块(412)，所述第一连接块(411)和所述第二连接块(412)能够相对运动以夹紧或释放所述椎弓根螺钉固定器(2)。
  4. 根据权利要求3所述的连接器，其特征在于，所述连接器还包括驱动部件(45)，用于驱动所述第一连接块(411)和所述第二连接块(412)相对运动。
  5. 根据权利要求4所述的连接器，其特征在于，所述驱动部件包括锁紧螺钉(45)，所述第二连接块(412)包括螺纹孔(4122)，所述螺纹孔(4122)与所述锁紧螺钉(45)接合。
  6. 根据权利要求3-5中任一项所述的连接器，其特征在于，所述第一连接块(411)包括相对的第一侧面(4111)和第二侧面(4112)，所述第一侧面(4111)比所述第二侧面(4112)更靠近所述连接杆(42)，
    所述第一连接块(411)还包括贯穿所述第一侧面(4111)形成的接合孔(4115)，所述接合孔(4115)用于接收所述连接杆(42)的第一端部(421)。
  7. 根据权利要求6所述的连接器，其特征在于，所述连接器还包括压片(46)，用于挤压所述连接杆(42)的第一端部(421)至所述第一连接块(411)上。
  8. 根据权利要求7所述的连接器，其特征在于，所述第一连接块(411)还包括相对的第一表面(4113)和第二表面(4114)，所述第二表面(4114)比所述第一表面(4113)更靠近所述第二连接块(412)，
    所述第一连接块(411)还包括形成在所述第一表面(4113)中的压片容纳部(4116)，所述压片容纳部(4116)用于容纳所述压片(46)。
  9. 根据权利要求7或8所述的连接器，其特征在于，所述连接器还包括垫片(44)，
    所述压片(46)还包括垫片容纳部(462)，用于容纳所述垫片(44)。
  10. 根据权利要求5所述的连接器，其特征在于，所述第一连接块(411)包括沿垂直于所述连接杆的轴线方向(A1)贯穿所述连接块(411)的第一贯通孔(4117)，
    所述连接杆(42)包括形成在所述连接杆(42)的第一端部(421)处的第二贯通孔(423)，所述第二贯通孔(423)沿垂直于所述连接杆的轴线方向(A1)贯穿所述连接杆(42)，
    所述第一贯通孔(4117)和所述第二贯通孔(423)对齐，使得所述锁紧螺钉(45)穿过所述第一连接块(411)和所述连接杆(42)。
  11. 根据权利要求8所述的连接器，其特征在于，所述第一连接块(411)包括沿垂直于所述连接杆的轴线方向贯穿所述连接块(411)的第一贯通孔(4117)，
    所述接合孔(4115)、所述压片容纳部(4116)和所述第一贯通孔(4117)相互连通。
  12. 根据权利要求1-11中任一项所述的连接器，其特征在于，所述第二连接部(43)形成在所述连接杆(42)的外表面上，并且所述第二连接部(43)在平行于所述连接杆(42)的轴线方向(A1)的方向上延伸的长度等于或大于所述连接杆(42)的长度的二分之一。
  13. 根据权利要求1-12中任一项所述的连接器，其特征在于，所述连接杆(42)的长度在20mm～100mm的范围内。
  14. 一种椎弓根螺钉固定系统，包括固定器(2)、连接器(4)和至少一个第一椎弓根螺钉(8)，其特征在于，
    所述连接器为根据权利要求1-13中任一项所述的连接器(4)，所述连接器用于将所述至少一个第一椎弓根螺钉(8)连接至所述固定器(2)上。
  15. 根据权利要求14所述的椎弓根螺钉固定系统，其特征在于，所述固定器(2)包括至少一个第二椎弓根螺钉(24)，
    所述第一椎弓根螺钉(8)的轴线与所述第二椎弓根螺钉(24)的轴线之间形成预定的夹角(α)。
PCT/CN2017/101035 2017-09-08 2017-09-08 用于椎弓根螺钉的连接器和固定系统 WO2019047158A1 (zh)

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JPH11178838A (ja) * 1997-12-18 1999-07-06 Robert Reed Shokai:Kk 骨固定装置
US6673073B1 (en) * 1999-11-29 2004-01-06 Schaefer Bernd Transverse connector
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Publication number Priority date Publication date Assignee Title
JPH11178838A (ja) * 1997-12-18 1999-07-06 Robert Reed Shokai:Kk 骨固定装置
US6673073B1 (en) * 1999-11-29 2004-01-06 Schaefer Bernd Transverse connector
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CN206239494U (zh) * 2016-08-16 2017-06-13 广州聚生生物科技有限公司 经皮微创的伤椎复位系统
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