WO2023245870A1 - 横向连接装置及使用其的复位固定系统 - Google Patents

横向连接装置及使用其的复位固定系统 Download PDF

Info

Publication number
WO2023245870A1
WO2023245870A1 PCT/CN2022/116683 CN2022116683W WO2023245870A1 WO 2023245870 A1 WO2023245870 A1 WO 2023245870A1 CN 2022116683 W CN2022116683 W CN 2022116683W WO 2023245870 A1 WO2023245870 A1 WO 2023245870A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
cap
nail
inner core
outer sleeve
Prior art date
Application number
PCT/CN2022/116683
Other languages
English (en)
French (fr)
Inventor
张巍
刘鐘阳
李建涛
郭徽
王军松
唐佩福
Original Assignee
中国人民解放军总医院第四医学中心
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 CN202221587782.XU external-priority patent/CN218338508U/zh
Priority claimed from CN202221588589.8U external-priority patent/CN218338509U/zh
Priority claimed from CN202210718502.2A external-priority patent/CN115054349B/zh
Priority claimed from CN202210718490.3A external-priority patent/CN114948155B/zh
Application filed by 中国人民解放军总医院第四医学中心 filed Critical 中国人民解放军总医院第四医学中心
Publication of WO2023245870A1 publication Critical patent/WO2023245870A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices

Definitions

  • the application date is June 23, 2022.
  • the application number is CN202210718490.3.
  • the name is "Transverse Connection Device and Resetting and Fixing System Using the Same”.
  • the application date is June 23, 2022.
  • the application number is CN202221587782.
  • "Reset and Fixation System” and the application date is June 23, 2022, the application number is CN202221588589.8, and the name is "Transverse Connector and Reset and Fixation System Using the Same".
  • the entire contents of the above application are incorporated herein by reference in their entirety.
  • the present invention relates to a medical device, in particular to a transverse connection device for the spine and a reduction and fixation system using the same.
  • the fixed reduction mechanism of the pedicle screw and rod system is to reduce the fractured vertebral body through indirect traction.
  • the fractured vertebral body can be effectively reduced due to the traction of the intervertebral disc annulus, but the central bone mass of the front and middle columns cannot. It is stretched and reduced, forming a collapse defect in the central part, resulting in insufficient reduction.
  • a cavity will be formed in the vertebral body after reduction, resulting in insufficient front support, resulting in further loss of vertebral body height in the long term and even degeneration of adjacent segmental intervertebral discs.
  • Cross-injured vertebra fixation can further treat the injured vertebra after reduction. If the injured vertebra is not sufficiently reduced, the vertebral body can be reduced through the pedicle channel, or the cavity within the vertebral body can be grafted with bone after reduction.
  • scholars have found through finite element, biomechanics and clinical follow-up that cross-injured vertebrae fixation has insufficient stability for burst fracture fixation and is prone to failure.
  • short-segment fixation combined with flat screw placement on the injured vertebra can increase structural stability, avoid the quadrilateral effect and hanging effect of cross-segment fixation, disperse and reduce the internal fixation load, and therefore can effectively reduce internal fixation failure and secondary kyphosis. risk and is more in line with the biomechanical requirements of the spine.
  • the traditional fixation method of injured vertebrae is to first place screws in the adjacent vertebral body and the injured vertebra, and then reduce the vertebral body through connecting rods. After reduction, even if the injured vertebra is poorly reset or the front cavity is too large, the injured vertebra will not be reset within the body. The bone graft channel is occupied and further intravertebral operations cannot be performed.
  • the technical problem to be solved by the present invention is to provide a transverse connecting device and a reduction and fixation system using the same, which achieves effective reduction of the fractured vertebral body, sufficient front support, and at the same time ensures the stability of the spine.
  • the transverse connection device in the present invention includes a connecting rod.
  • a clamping head is provided on the connecting rod.
  • Two clamping arms are provided at the lower end of the clamping head.
  • a clamping arm is formed between the two clamping arms.
  • slot one of the two clamping arms is provided with a transverse through hole, a first slider is provided in the transverse through hole, and the clamping head is provided with a Vertical through hole, a screw plug is threadedly connected to the vertical through hole, the lower end of the screw plug is against the side of the first slider away from the clamping groove, when the screw plug is screwed into the vertical through hole , the screw plug pushes the first slider to slide along the transverse through hole into the clamping groove, the first slider is provided with a first clamping groove, and the hole wall of the transverse through hole is provided with a first clamping groove. block, and the first blocking block is located in the first blocking slot.
  • the clamping heads are respectively provided at both ends of the connecting rod, and the two clamping arms at the lower end of the clamping head are respectively the first clamping arm and the second clamping arm.
  • a clamping groove is formed between the first clamping arm and the second clamping arm, and a transverse through hole is provided on the first clamping arm or the second clamping arm.
  • one end of the connecting rod is provided with the clamping head, and the two clamping arms at the lower end of the clamping head are respectively the first clamping arm and the second clamping arm.
  • a clamping groove is formed between the first clamping arm and the second clamping arm.
  • the first clamping arm is located between the connecting rod and the second clamping arm.
  • the first clamping arm is provided with a transverse through-hole. hole.
  • the reduction and fixation system using the above-mentioned transverse connection device in the present invention includes a vertebral body distraction support nail, an upper vertebral pedicle screw and a lower vertebral pedicle screw.
  • the vertebral body distraction support nail is installed on the fractured vertebral body, so The upper pedicle screws and lower pedicle screws are respectively installed on the upper and lower vertebral bodies of the fractured vertebral body.
  • a fixing rod is connected between the upper pedicle screws and the lower pedicle screws.
  • the clamping head of the transverse connecting device clamps the fixed rod through the clamping groove, and the connecting rod of the transverse connecting device is fixedly connected to the vertebral body expansion support nail.
  • the vertebral body expansion support nail is fixedly connected with a support block, the support block is provided with an installation groove, and the connecting rod of the transverse connection device is inserted into the installation groove.
  • a screw is threadedly connected between the two groove walls of the installation groove, the screw offsets the connecting rod of the transverse connection device, and the screw fixes the connecting rod in the installation groove.
  • a support block is fixedly connected to the vertebral body expansion support nail, a first through hole is provided on the support block, and a second through hole is provided on the wall of the first through hole.
  • the connecting rod of the transverse connecting device is inserted into the first through hole, the second through hole is a threaded hole, and a screw is threadedly connected to the second through hole, and the screw is connected to the transverse hole.
  • the connecting rods of the device offset each other.
  • the vertebral body expansion support nail includes a nail body and a nail cap.
  • the nail body includes an inner core, an outer sleeve and a expansion ball, and the inner core is threadedly connected to the outer sleeve. Inside, the upper and lower ends of the inner core extend to the outside of the outer sleeve. The lower end of the inner core is provided with a conical nail head. The inner core between the conical nail head and the lower end of the outer sleeve is sleeved with Open the ball.
  • the nail cap includes an upper nail cap and a pressure cap. The upper nail cap is a cylindrical structure.
  • the lower end of the barrel cavity of the upper nail cap is connected to the upper end of the outer sleeve.
  • the upper end of the inner core Extending to the upper end of the barrel cavity of the upper nail cap, the upper end of the inner core is engaged and slidably connected with the pressurizing cap.
  • the pressurizing cap and the upper nail cap are engaged and slidably connected.
  • the pressurizing cap can be slid along the According to the axial sliding of the inner core and the upper nail cap, when the pressurized cap slides upward along the axial direction of the upper nail cap and is disengaged and slidingly connected with the upper nail cap, the pressurized cap still remains with the inner core.
  • the sliding connection is engaged.
  • the expansion ball expands.
  • the cone-shaped nail head and the expansion ball in the expansion state are both located in the fractured vertebral body.
  • the support block is fixedly connected to the outer cylinder wall of the outer sleeve, and the support block is located outside the fractured vertebral body.
  • the expansion ball includes an upper collar and a lower collar, and the upper collar and the lower collar are both sleeved on the inner core between the tapered nail head and the lower end of the outer sleeve.
  • the upper collar is against the lower end of the outer sleeve
  • the lower collar is against the upper end of the tapered nail head
  • a plurality of expansion pieces are fixedly connected between the upper collar and the lower collar
  • a plurality of expansion pieces are fixedly connected between the upper collar and the lower collar.
  • the expansion piece is arranged around the circumference of the inner core.
  • the expansion piece can convexly deform in a direction away from the inner core.
  • Two first lugs are fixedly connected to the cap, and two second lugs are fixedly connected to the pressure cap.
  • the upper nail cap includes an integral upper cylinder and a lower cylinder, the inner cylinder diameter of the upper cylinder is larger than the inner cylinder diameter of the lower cylinder, and the outer sleeve
  • the upper end is a hollow prism structure, and the lower part of the cavity of the lower cylinder is a prismatic shape that matches the upper end of the outer sleeve.
  • the upper part of the cavity of the lower cylinder is provided with a first clamping platform.
  • the lower part of the cylinder cavity is sleeved on the upper end of the outer sleeve, the upper end of the outer sleeve is against the first clamping platform, and the upper end of the inner core passes through the cylinder cavity of the lower cylinder body and then extends into the cylinder cavity of the upper cylinder body.
  • a second clamping platform is provided on the outer cylinder wall of the outer sleeve, and the lower end of the lower cylinder resists the second clamping platform.
  • the upper end of the inner core is a prismatic structure
  • the pressure cap is a cylindrical structure
  • the cylinder cavity of the pressure cap is a prismatic shape matching the upper end of the inner core.
  • the pressure cap is set on the upper end of the inner core
  • the outer cylinder wall of the pressure cap is fixed with a second clamping block
  • the inner cylinder wall of the upper cylinder is provided with an axially arranged second clamping groove.
  • the second clamping block is located in the second clamping slot, the second clamping block can slide along the second clamping slot, and the pressurizing cap slides upward along the axial direction of the upper nail cap to disengage the second clamping block.
  • the pressure cap is still set on the upper end of the inner core.
  • the upper vertebral pedicle screws and the lower vertebral pedicle screws are respectively installed on the upper and lower vertebral bodies of the fractured vertebral body, and then the vertebral body distraction support screws are installed on the fractured vertebral body.
  • the clamping head of the transverse connecting device clamps the fixed rod through the clamping groove, and the connecting rod of the transverse connecting device is fixedly connected to the vertebral body expansion support nail.
  • the interior of the fractured vertebral body is stretched open through the vertebral body distraction support nail, that is, the collapsed bone fragment of the fractured vertebral body is propped up, and then the fractured vertebral body is stretched and reduced through pedicle screws and fixed rods, and finally the fractured vertebral body is stretched and reduced.
  • the vertebral body distraction support nails, fixation rods and pedicle screws are fixedly connected together through a transverse connecting device, thereby achieving effective reduction of the fractured vertebral body, sufficient front support, and ensuring the stability of the spine.
  • Figure 1 is a schematic structural diagram of a transverse connection device in Embodiment 1 of the present invention.
  • Figure 2 is a schematic structural diagram 2 of the transverse connection device in Embodiment 1 of the present invention.
  • Figure 3 is a front view of the clamping head in Embodiment 1 of the present invention.
  • Figure 4 is a rear view of the clamping head in Embodiment 1 of the present invention.
  • Figure 5 is a top view of the clamping head in Embodiment 1 of the present invention.
  • Figure 6 is a cross-sectional view along line A-A in Figure 5;
  • Figure 7 is a perspective view of the clamping head in Embodiment 1 of the present invention.
  • Figure 8 is a second perspective view of the clamping head in Embodiment 1 of the present invention.
  • Figure 9 is a third perspective view of the clamping head in Embodiment 1 of the present invention.
  • Figure 10 is a top view of the clamping head in Embodiment 1 of the present invention (hiding the screw plug, the first slide block and the first clamping block);
  • Figure 11 is a cross-sectional view along line B-B in Figure 10;
  • Figure 12 is a perspective view of the clamping head in Embodiment 1 of the present invention (hiding the screw plug, the first slide block and the first clamping block);
  • Figure 13 is a second perspective view of the clamping head in Embodiment 1 of the present invention (hiding the screw plug, the first slide block and the first clamping block);
  • Figure 14 is a relative position diagram of the screw plug, the first slide block and the first clamping block in Embodiment 1 of the present invention.
  • Figure 15 is a front view of the screw plug in Embodiment 1 of the present invention.
  • Figure 16 is a perspective view of the screw plug in Embodiment 1 of the present invention.
  • Figure 17 is a perspective view of the first slider in Embodiment 1 of the present invention.
  • Figure 18 is a second perspective view of the first slider in Embodiment 1 of the present invention.
  • Figure 19 is a diagram showing the relative positions of upper pedicle screws, lower pedicle screws and fixation rods in Embodiment 1 of the present invention.
  • Figure 20 is a front view of the upper pedicle screw in Embodiment 1 of the present invention (also a front view of the lower pedicle screw);
  • Figure 21 is a front cross-sectional view of the upper pedicle screw in Embodiment 1 of the present invention (it is also a front cross-sectional view of the lower pedicle screw);
  • Figure 22 is a front view of the vertebral body distraction support nail in Embodiment 1 of the present invention.
  • Figure 23 is a front cross-sectional view of a vertebral body distraction support nail in Embodiment 1 of the present invention.
  • Figure 24 is a front view of the inner core in Embodiment 1 of the present invention.
  • Figure 25 is a top view of Figure 24;
  • Figure 26 is a front view of the outer sleeve in Embodiment 1 of the present invention.
  • Figure 27 is a front cross-sectional view of the outer sleeve in Embodiment 1 of the present invention.
  • Figure 28 is a top view of Figure 26;
  • Figure 29 is a front view of the expansion ball in Embodiment 1 of the present invention (the expansion ball is in a contracted state);
  • Figure 30 is a front view of the expansion ball in Embodiment 1 of the present invention (the expansion ball is in an expansion state);
  • Figure 31 is a top view of Figure 30;
  • Figure 32 is a front cross-sectional view of the expansion ball in Embodiment 1 of the present invention (the expansion ball is in an expansion state);
  • Figure 33 is a front view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 34 is a front cross-sectional view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 35 is a top view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 36 is a bottom view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 37 is a front view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 38 is a front cross-sectional view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 39 is a left view (also a right view) of the pressure cap in Embodiment 1 of the present invention.
  • Figure 40 is a top view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 41 is a bottom view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 42 is another front view of the inner core in Embodiment 1 of the present invention.
  • Figure 43 is a top view of Figure 42;
  • Figure 44 is another front cross-sectional view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 45 is another top view of the pressure cap in Embodiment 1 of the present invention.
  • Figure 46 is another front view of the outer sleeve in Embodiment 1 of the present invention.
  • Figure 47 is a top view of Figure 46;
  • Figure 48 is another front cross-sectional view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 49 is another bottom view of the upper nail cap in Embodiment 1 of the present invention.
  • Figure 50 is a diagram of the use status of the vertebral body distraction support nail in the first embodiment of the present invention.
  • Figure 51 is a second view of the use state of the vertebral body distraction support nail in Embodiment 1 of the present invention.
  • Figure 52 is a relative positional relationship diagram between the pressure cap and the upper nail cap shown in Figure 50;
  • Figure 53 is a relative positional relationship diagram between the pressure cap and the upper nail cap shown in Figure 51;
  • Figure 54 is a usage status diagram of the reset and fixation system in Embodiment 1 of the present invention.
  • Figure 55 is a connection state diagram of the support block and the connecting rod in Embodiment 1 of the present invention.
  • Figure 56 is a top view of the support block in Embodiment 1 of the present invention.
  • Figure 57 is a cross-sectional view along line C-C in Figure 56;
  • Figure 58 is a schematic structural diagram of a screw in Embodiment 1 of the present invention.
  • Figure 59 is a diagram illustrating the relative positional relationship between the clamping groove of the clamping head and the fixed rod in Embodiment 1 of the present invention.
  • Figure 60 is Figure 2 of the relative positional relationship between the clamping groove of the clamping head and the fixed rod in Embodiment 1 of the present invention
  • Figure 61 is a schematic structural diagram of the transverse connection device in Embodiment 2 of the present invention.
  • Figure 62 is a second structural schematic diagram of the transverse connection device in Embodiment 2 of the present invention.
  • Figure 63 is a front view of the vertebral body distraction support nail in Embodiment 2 of the present invention.
  • Figure 64 is a front cross-sectional view of a vertebral body distraction support nail in Embodiment 2 of the present invention.
  • Figure 65 is a diagram 1 of the use state of the vertebral body distraction support nail in Embodiment 2 of the present invention.
  • Figure 66 is a second view of the use state of the vertebral body distraction support nail in the second embodiment of the present invention.
  • Figure 67 is a usage status diagram of the reset and fixation system in Embodiment 2 of the present invention.
  • Figure 68 is a connection state diagram of the support block and the connecting rod in Embodiment 2 of the present invention.
  • Figure 69 is a top view of the support block in Embodiment 2 of the present invention.
  • Figure 70 is a cross-sectional view along line D-D in Figure 69;
  • Figure 71 is a schematic structural diagram of a screw in Embodiment 2 of the present invention.
  • the terms "setting”, “installation”, “connecting” and “connecting” should be understood in a broad sense.
  • it can be a fixed connection, or a fixed connection.
  • It can be detachably connected or integrally connected; it can be mechanically connected; it can be directly connected or indirectly connected through an intermediate medium; for those of ordinary skill in the art, the above terms in the present invention can be understood in specific situations. specific meaning.
  • the transverse connection device in the present invention includes a connecting rod 23.
  • the connecting rod 23 is provided with a clamping head 24.
  • the two ends of the connecting rod 23 are respectively provided with a clamping head 24.
  • the lower end of the clamping head 24 is provided with two clamping arms.
  • a clamping groove 25 is formed between the two clamping arms.
  • One of the two clamping arms is provided with a transverse through hole 32, specifically for clamping.
  • the two clamping arms at the lower end of the head 24 are respectively a first clamping arm 28 and a second clamping arm 26.
  • a clamping groove 25 is formed between the first clamping arm 28 and the second clamping arm 26.
  • the arm 28 or the second clamping arm 26 is provided with a transverse through hole 32 .
  • a first slider 27 is provided in the transverse through hole 32, and a vertical through hole 31 connected with the transverse through hole 32 is provided on the clamping head 24.
  • a screw plug 29 is threadedly connected to the vertical through hole 31. , the lower end of the screw plug 29 abuts the side of the first slider 27 away from the clamping groove 25 , when the screw plug 29 is screwed into the vertical through hole 31 , the screw plug 29 pushes the first slider 27 Slide along the transverse through hole 32 into the clamping groove 25 .
  • the first slider 27 is provided with a first clamping slot 36, and the hole wall of the transverse through hole 32 is provided with a first clamping block 30.
  • the first clamping block 30 is located in the first clamping slot 36. .
  • the connecting rod 23 is U-shaped, and the two clamping heads 24 are fixedly connected to both ends of the connecting rod 23.
  • the first clamping arm 28 is arranged close to the end of the connecting rod 23
  • the second clamping arm 26 is arranged away from the end of the connecting rod 23 .
  • the first clamping arm 28 is provided with a transverse through hole 32 .
  • the screw plug 29 is cylindrical.
  • the screw plug 29 is coaxially arranged with the vertical through hole 31.
  • the diameter of the upper half 34 of the screw plug 29 is larger than the diameter of the lower half 35.
  • the upper part of the screw plug 29 is The outer wall of the half 34 is provided with threads, and the top surface of the upper half 34 of the screw plug 29 is provided with a polygonal sinking groove. Insert one end of the rotating tool into the polygonal sinking groove, and then rotate the rotating tool to screw the screw plug 29 in. Or unscrew the vertical through hole 31.
  • the lower end of the lower half 35 of the screw plug 29 is an arc convex surface.
  • the clamping groove 25 is arc-shaped.
  • the first slider 27 is cylindrical.
  • the first slider 27 is coaxially arranged with the transverse through hole 32.
  • One end surface 37 of the first slider 27 is arranged away from the clamping groove 25.
  • the other end face 38 of the slider 27 is arranged close to the clamping groove 25 .
  • the end surface 37 of the first slider 27 away from the clamping groove 25 is the above-mentioned side surface of the first slider 27 away from the clamping groove 25 .
  • the end surface 37 of the first slider 27 away from the clamping groove 25 is an arc-shaped concave surface to match the lower end of the lower half 35 of the screw plug 29; the end surface 38 of the first slider 27 close to the clamping groove 25 is also an arc. concave surface to match the shape of the clamping groove 25.
  • a first clamping groove 36 is provided on the outer circumferential wall of the first slider 27 .
  • the first clamping groove 36 is strip-shaped, and the first clamping groove 36 is arranged along the axial direction of the first slider 27 .
  • the first clamping block 30 is cylindrical, and the lower end of the first clamping arm 28 is provided with a mounting hole 33.
  • the mounting hole 33 is connected to the transverse through hole 32.
  • a clamping block 30 is fixedly installed in the mounting hole 33 .
  • the upper end of the first clamping block 30 extends into the transverse through hole 32 , and the upper end of the first clamping block 30 is located in the first slot 36 of the first sliding block 27 .
  • the lower end of the lower half 35 of the screw plug 29 offsets the end surface 37 of the first slider 27 away from the clamping groove 25.
  • the screw plug 29 continues to screw in.
  • the plug 29 pushes the first slider 27 to slide toward the clamping groove 25 along the transverse through hole 32.
  • the first slider 27 no longer slides due to the blocking effect of the first block 30.
  • the first slider 27 can be pushed to slide along the transverse through hole 32 in a direction away from the clamping groove 25. 30, the first slider 27 no longer slides.
  • the reduction and fixation system using the above-mentioned transverse connection device in the present invention includes a vertebral body distraction support screw, an upper vertebral pedicle screw 39 and a lower vertebral pedicle screw 41.
  • the vertebral body distraction support nail Installed on the fractured vertebral body 22, the upper pedicle screws 39 and the lower pedicle screws 41 are respectively installed on the upper vertebral body 53 and the lower vertebral body 54 of the fractured vertebral body 22.
  • the upper pedicle screws 39 A fixing rod 40 is connected to the lower pedicle screw 41.
  • the clamping head 24 of the transverse connecting device clamps the fixing rod 40 through the clamping groove 25.
  • the connecting rod 23 of the transverse connecting device is fixedly connected to the vertebral body. Open the support nails and attach them.
  • the two clamping heads 24 of the transverse connecting device respectively clamp the fixing rod 40 through their own clamping grooves 25, and the two clamping heads 24 are respectively located above and below the vertebral body expansion support nail.
  • the upper pedicle screw 39 and the lower pedicle screw 41 have the same structure. They both include a barrel-shaped screw seat 43, and the bottom wall of the screw seat 43 A screw rod 45 is provided on the screw base 43. A U-shaped notch for accommodating the fixing rod 40 is provided on the side wall of the screw base 43. The inner cavity of the screw base 43 is provided with a pad 44 and a fixed plug 42. The pad 44 is located on the fixed plug 42. Below, the fixing plug 42 is threadedly connected in the screw seat 43, and the fixing rod 40 is located between the fixing plug 42 and the cushion block 44. When the fixing plug 42 is screwed into the screw seat 43, the fixing plug 42 can clamp the fixing rod 40 with the cushion block 44, thereby firmly connecting the fixing rod 40 with the pedicle screws 39 and 41.
  • a support block 47 is fixedly connected to the vertebral body expansion support nail,
  • the support block 47 is provided with a mounting slot 48, and the connecting rod 23 of the transverse connection device is inserted into the mounting slot 48.
  • Screws 46 are threaded between the two walls of the mounting slot 48, so The screw 46 is against the connecting rod 23 of the transverse connecting device, and the screw 46 fixes the connecting rod 23 in the installation groove 48 .
  • the transverse connecting device When installing the transverse connecting device, clamp the clamping grooves 25 of the two clamping heads 24 on the fixed rod 40, then place the connecting rod 23 in the installation groove 48 of the support block 47, and then attach each clamping head 24
  • the screw plugs 29 are screwed into the respective vertical through holes 31, so that each clamping head 24 clamps the fixing rod 40 through the respective clamping groove 25, and then the screw 46 is screwed into the mounting slot 48 until the screw 46 offsets the connecting rod 23.
  • the screw 46 fixes the connecting rod 23 and the supporting block 47 together.
  • the transverse connecting device also fixes the vertebral body spreading supporting screws, fixing rods 40 and pedicle screws 39, 41. connected together.
  • the vertebral body expansion support nail includes a nail body and a nail cap.
  • the nail body includes an inner core 13, an outer sleeve 6 and a expansion ball 10.
  • the inner core 13 is threadedly connected to the outer sleeve 6.
  • the upper end 14 and the lower end of the inner core 13 both extend to the outside of the outer sleeve 6.
  • the lower end of the inner core 13 is provided with a tapered nail head 11.
  • the inner core 13 between the nail head 11 and the lower end of the outer sleeve 6 is covered with a spreading ball 10.
  • the nail cap includes an upper nail cap 4 and a pressure cap 12.
  • the upper nail cap 4 is a cylindrical structure, so The lower end of the barrel cavity of the upper nail cap 4 is connected to the upper end 16 of the outer sleeve 6.
  • the upper end 14 of the inner core 13 extends to the upper end of the barrel cavity of the upper nail cap 4.
  • the upper end 14 of the inner core 13 is engaged and slidably connected with Pressure cap 12, the pressure cap 12 and the upper nail cap 4 are engaged and slidingly connected, and the pressure cap 12 can slide along the axial direction of the inner core 13 and the upper nail cap 4.
  • the pressurizing cap 12 still maintains an engaged sliding connection with the inner core 13.
  • the tapered nail head 11 and the expansion ball 10 in the expansion state are both located in the fractured vertebral body 22.
  • the supporting block 47 is fixedly connected to the outer cylinder wall of the outer sleeve 6.
  • the supporting block 47 is located in the fractured vertebral body. 22 outside the body.
  • the pressure cap 12 is still maintained with the inner core 13
  • the sliding connection is engaged, and then the upper nail cap 4 and the outer sleeve 6 are kept stationary, and the pressurizing cap 12 is rotated.
  • the pressurizing cap 12 drives the inner core 13 to rotate, because the inner core 13 and the outer sleeve 6 are threaded. , therefore, the inner core 13 can move upward relative to the outer sleeve 6, which in turn causes the conical nail head 11 to move upward toward the lower end of the outer sleeve 6, causing the expansion ball 10 to expand, so that the expansion ball 10 is in an expanded state. 10.
  • the vertebral body distraction support nail can spread the collapsed bone fragment from the inside of the fractured vertebral body 22, so that the fractured vertebral body 22 can be well reset, and the occurrence of long-term complications can be reduced.
  • the support block 47 since the support block 47 is fixedly connected to the outer cylinder wall of the outer sleeve 6, the support block 47 moves together with the outer sleeve 6.
  • the expansion ball 10 includes an upper collar 7 and a lower collar 9.
  • the upper collar 7 and The lower collar 9 is placed on the inner core 13 between the tapered nail head 11 and the lower end of the outer sleeve 6.
  • the upper collar 7 offsets the lower end of the outer sleeve 6.
  • the lower collar 9 is in contact with the tapered nail head 11.
  • the upper ends of the nail heads 11 are against each other, and a plurality of expansion pieces 8 are fixedly connected between the upper collar 7 and the lower collar 9.
  • the plurality of expansion pieces 8 are arranged around the circumference of the inner core 13.
  • two first lugs 5 are fixedly connected to the upper nail cap 4, and two second lugs 1 are fixedly connected to the pressure cap 12. .
  • the two first lugs 5 are respectively fixedly connected to the opposite sides of the upper nail cap 4
  • the two second lugs 1 are respectively fixedly connected to the opposite sides of the pressure cap 12 .
  • the upper nail cap 4 includes an integrally formed upper cylinder 2 and a lower cylinder 3.
  • the inner cylinder diameter of the upper cylinder 2 is larger than that of the lower cylinder.
  • the inner cylinder diameter of the upper cylinder body 3 is also larger than the outer cylinder diameter of the lower cylinder body 3.
  • the two first lugs 5 are fixedly connected to the opposite sides of the lower cylinder 3 respectively.
  • the upper end 16 of the outer sleeve 6 is a hollow prism structure, and the lower part of the cavity of the lower barrel 3 is in a prism shape matching the upper end 16 of the outer sleeve 6.
  • the lower barrel The upper part of the cylinder cavity of the body 3 is provided with a first clamping platform 20.
  • the lower part of the cylinder cavity of the lower cylinder body 3 is sleeved on the upper end 16 of the outer sleeve 6.
  • the upper end 16 of the outer sleeve 6 is connected with the first clamping platform 20.
  • the upper end 14 of the inner core 13 passes through the cylinder cavity of the lower cylinder body 3 and then extends into the cylinder cavity of the upper cylinder body 2 .
  • the upper end 16 of the outer sleeve 6 has a hollow triangular prism structure, and matching it, the lower part of the cavity of the lower cylinder 3 is also in the shape of a triangular prism.
  • the first clamping platform 20 it is formed in the following way: the upper part of the cylinder cavity of the lower cylinder body 3 is cylindrical, and the aperture of the cylindrical cylinder cavity is smaller than the aperture of the lower triangular prism cylinder cavity, so that in the lower cylinder body 3
  • the first clamping platform 20 is formed between the upper and lower parts of the cylinder cavity, that is, the first clamping platform 20 is formed on the upper part of the cylinder cavity of the lower cylinder body 3 as mentioned above.
  • connection method between the lower cylinder 3 and the outer sleeve 6 they can also be connected in the following ways: as shown in Figure 46, and as shown in Figures 47-49, outside the upper end 16 of the outer sleeve 6
  • a second slider 51 is provided on the wall, and an axially arranged chute 52 is provided at the lower part of the cylinder cavity of the lower cylinder 3. After the lower part of the cylinder cavity of the lower cylinder 3 is sleeved on the upper end 16 of the outer sleeve 6, the second slider 51 is located in the chute 52.
  • the positions of the second slider 51 and the chute 52 can also be reversed, that is, the upper end 16 of the outer sleeve 6 is provided with an axially arranged chute 52 on the outer wall, and the lower part of the barrel cavity of the lower cylinder 3 is provided with a chute 52 .
  • the second slider 51 is located in the slide groove 52 after the lower part of the barrel cavity of the lower cylinder 3 is sleeved on the upper end 16 of the outer sleeve 6 .
  • the lower cylinder 3 and the upper end 16 of the outer sleeve 6 can be either an interference fit or a clearance fit, because these two fits All methods can ensure that the upper nail cap 4 rotates together with the outer sleeve 6 or does not rotate. That is, when the upper nail cap 4 is rotated, the upper nail cap 4 can drive the outer sleeve 6 to rotate synchronously, while the upper nail cap 4 does not rotate. , the outer sleeve 6 will not rotate.
  • the outer cylinder wall of the outer sleeve 6 is provided with a second clamping platform 17, and the lower end of the lower cylinder 3 offsets the second clamping platform 17, so that the lower The cylinder 3 and the outer sleeve 6 fit more closely.
  • the second clamping platform 17 is formed in the following manner: no matter how the upper end 16 of the outer sleeve 6 is connected to the lower cylinder 3, as long as the outer diameter of the upper end 16 of the outer sleeve 6 is smaller than the outer diameter of the lower end.
  • a second clamping platform 17 is formed between the upper and lower ends.
  • the outer diameters of the three sides of the hollow triangular prism structure at the upper end of the outer sleeve 6 are smaller than the outer diameter of the lower end of the outer sleeve 6. diameter, so that the second clamping platform 17 is formed between the upper and lower ends of the outer sleeve 6.
  • the upper end 14 of the inner core 13 has a prismatic structure
  • the pressure cap 12 It has a cylindrical structure
  • the cylinder cavity of the pressure cap 12 is a prismatic shape that matches the upper end 14 of the inner core 13.
  • the pressure cap 12 is set on the upper end 14 of the inner core 13.
  • a second clamping block 21 is fixed on the outer cylinder wall, and an axially arranged second clamping groove 19 is provided on the inner cylinder wall of the upper cylinder 2.
  • the second clamping block 21 is located in the second clamping slot 19.
  • the second clamping block 21 can slide along the second clamping groove 19, and the pressure cap 12 slides upward along the axial direction of the upper nail cap 4 so that the second clamping block 21 is separated from the second clamping slot 19,
  • the pressurizing cap 12 is still mounted on the upper end 14 of the inner core 13 .
  • the upper end 14 of the inner core 13 has a triangular prism structure to match, and the cylinder cavity of the pressure cap 12 is in the shape of a triangular prism.
  • the pressurizing cap 12 can slide up and down along the axial direction of the inner core 13, but the pressurizing cap 12 cannot rotate circumferentially relative to the inner core 13, but can only When the pressure cap 12 rotates, it drives the inner core 13 to rotate synchronously.
  • the pressure cap 12 does not rotate, the inner core 13 does not rotate either.
  • the pressure cap 12 and the upper nail cap 4 are engaged and slidably connected through the second clamping block 21 and the second slot 19, that is, the pressure cap 12 can slide up and down along the axial direction of the upper nail cap 4.
  • the second clamping block 21 slides up and down along the second clamping groove 19.
  • the pressurizing cap 12 cannot rotate circumferentially relative to the upper nail cap 4. , but they can only rotate synchronously together, that is, when the upper nail cap 4 rotates, it drives the pressure cap 12 to rotate synchronously together.
  • the pressure cap 12 drives the inner core 13 relative to the upper nail cap. 4
  • the inner core 13 also rotates relative to the outer sleeve 6, so that the inner core 13 can move upward relative to the outer sleeve 6, so the conical nail head 11 at the lower end of the inner core 13 is close to the lower end of the outer sleeve 6 movement, and then squeezes the upper collar 7 and the lower collar 9 of the expansion ball 10, causing the two collars to move closer to each other, so the expansion piece 8 bulges and deforms in the direction away from the inner core 13, that is, in the expansion state open state, as shown in Figure 51.
  • the outer wall of the tapered nail head 11 is provided with a screw thread to facilitate the threading of the tapered nail head 11 into the fractured vertebral body 22.
  • the outer wall of the core body between the two ends of the inner core 13 is also provided with external threads 15, and the inner cylinder wall of the outer sleeve 6 is provided with internal threads 18.
  • the inner core 13 and the outer sleeve 6 pass through the external threads 15 and the internal threads. 18 realizes threaded connection.
  • the inner core 13 can move upward or downward relative to the outer sleeve 6.
  • the inner core 13 in order to make the tapered nail head 11 close to the outer sleeve
  • the inner core 13 can only move upward relative to the outer sleeve 6 .
  • the pressing cap 12 and the upper end of the inner core 13 can also be connected with each other in the following manner: as shown in Figure 42, and as shown in Figures 43-45, the upper end 14 of the inner core 13 is provided with a sliding connection on the outer wall.
  • the protrusions 49 are located at In the groove 50, the protrusion 49 can slide along the groove 50, and the pressure cap 12 slides upward along the axial direction of the upper nail cap 4 to cause the second blocking block 21 to disengage from the second blocking groove 19.
  • the pressurizing cap 12 is still sleeved on the upper end 14 of the inner core 13 and the protrusion 49 is located in the groove 50 .
  • the positions of the bumps 49 and the grooves 50 can also be reversed, that is, an axially arranged groove 50 is provided on the outer wall of the upper end 14 of the inner core 13 , and a shaft is provided in the barrel cavity of the pressure cap 12 .
  • the bump 49 is arranged in a direction. Under the limiting action of the bump 49 and the groove 50, the pressure cap 12 can slide up and down along the axial direction of the inner core 13. During this process, the bump 49 also slides up and down along the groove 50.
  • the pressure cap 12 cannot rotate circumferentially relative to the inner core 13. When the pressure cap 12 rotates, it drives the inner core 13 to rotate synchronously. When the pressure cap 12 does not rotate, the inner core 13 will not rotate either. .
  • the inner core 13 and the outer sleeve 6 are threaded, the inner core 13 can move upward relative to the outer sleeve 6, thus causing the conical nail head 11 Move upward toward the lower end of the outer sleeve 6 to expand the expansion ball 10.
  • the expansion ball 10 in the expansion state will prop up the collapsed bone fragment of the fractured vertebral body 22, and then cut off the outer surface of the fractured vertebral body 22.
  • the sleeve 6 and the inner core 13 are sufficient. After the reduction operation is completed, the expansion ball 10 and each part of the inner core 13 and the outer sleeve 6 remain in the fractured vertebral body 22 and will not be taken out again.
  • the expansion ball 10 in the fractured vertebral body 22 can always maintain a expansion state. It can be seen that the vertebral body distraction support nail can spread the collapsed bone fragment from the inside of the fractured vertebral body 22, so that the fractured vertebral body 22 can be well reset, and the occurrence of long-term complications can be reduced.
  • the upper pedicle screws 39 and the lower pedicle screws 41 are respectively installed on the upper vertebral body 53 and the lower vertebral body 54 of the fractured vertebral body 22, and then the vertebral body is spread and supported by the supporting screws.
  • the clamping head 24 of the transverse connecting device clamps the fixing rod 40 through the clamping groove 25, and the connecting rod 23 of the transverse connecting device is fixedly connected to the vertebral body expansion support nail.
  • the interior of the fractured vertebral body 22 is stretched open through the vertebral body stretching support nails, that is, the collapsed bone fragment of the fractured vertebral body 22 is propped up, and then the fractured vertebral body 22 is stretched through the pedicle screws 39, 41 and the fixation rod 40. Traction reduction is performed, and finally the vertebral body distraction support nails, fixation rods 40 and pedicle screws 39 and 41 are fixedly connected together through the transverse connecting device, thereby achieving effective reduction of the fractured vertebral body 22 and sufficient front support. At the same time, the stability of the spine is ensured.
  • the present invention can realize the internal expansion of the compressed cone after the injured vertebrae are screwed, so that the vertebral body can be better restored, the anterior path is supported, the occurrence of long-term internal fixation failure is greatly avoided, and the ball is expanded at the same time.
  • the inner core 13 and the outer sleeve 6 are both made of titanium alloy or tantalum metal, which has better compatibility with bone and achieves better bone healing and bone ingrowth.
  • the connecting rod 59 of the transverse connecting device is in a straight shape.
  • One end of the connecting rod 59 is provided with a clamping head 24.
  • the connecting rod 59 is fixedly connected to the clamping head 24. More specifically, the connecting rod 59 and the clamping head 24 are integrally formed. structure.
  • the first clamping arm 28 is located between the connecting rod 59 and the second clamping arm 26.
  • the first clamping arm 28 is provided with a transverse through hole 32.
  • a support block 57 is fixedly connected to the vertebral body expansion support nail.
  • the support block 57 is provided with a first through hole 58.
  • the hole wall of the first through hole 58 is provided with a second through hole 55.
  • the connecting rod 59 of the transverse connection device The second through hole 55 is a threaded hole and is inserted into the first through hole 58.
  • a screw 56 is threadedly connected to the second through hole 55, and the screw 56 offsets the connecting rod 59 of the transverse connection device.
  • the transverse connecting device When installing the transverse connecting device, first insert the connecting rod 59 of the transverse connecting device into the first through hole 58 of the support block 57 , and then clamp the fixing rod 40 with the clamping head 24 of the transverse connecting device through the clamping groove 25 , and then screw the screw 56 into the second through hole 55 until the screw 56 offsets the connecting rod 59 of the transverse connecting device. At this time, the screw 56 fixedly connects the connecting rod 59 of the transverse connecting device and the supporting block 57 together. At the same time, the transverse connecting device also fixedly connects the vertebral body distraction support nail, the fixation rod 40 and the pedicle screws 39, 41 together.
  • the difference between this embodiment and the first embodiment is that the structure of the transverse connecting device is different. Specifically, the connecting rod 59 is in a straight shape, and only one clamp is fixedly connected to one end of the connecting rod 59. Head 24, of course, the structure and working principle of the clamping head 24 are exactly the same as the clamping head 24 of the first embodiment. Due to the above differences, the way in which the transverse connection device of this embodiment is fixedly connected to the vertebral body distraction support nail is also different from that in Embodiment 1 (that is, the way in which the connecting rod 59 and the support block 57 are fixedly connected in this embodiment is different from the way in the first embodiment).
  • the connecting rod 23 and the supporting block 47 of the first embodiment are fixedly connected in different ways), and the transverse connecting device of this embodiment is only fixedly connected to the fixed rod 40 through one clamping head 24, while the transverse connecting device of the first embodiment is fixedly connected to the fixed rod 40 through two clamping heads 24.
  • the clamping head 24 is fixedly connected to the fixed rod 40 .
  • other parts of this embodiment are the same as those of Embodiment 1.
  • the transverse connection device of the embodiment of the present invention includes a connecting rod.
  • a clamping head is provided on the connecting rod.
  • Two clamping arms are provided at the lower end of the clamping head.
  • a clamping groove is formed between the two clamping arms.
  • One of the clamping arms is provided with a transverse through hole, a first slider is provided in the transverse through hole, and a vertical through hole is provided on the clamping head that is connected to the transverse through hole, and the vertical through hole is internally threaded.
  • There is a screw plug and the lower end of the screw plug is against the side of the first slider away from the clamping groove. When the screw plug is screwed into the vertical through hole, the screw plug pushes the first slider along the transverse through hole into the clamping groove. slide.
  • the reduction and fixation system using the above-mentioned transverse connection device also includes a vertebral body distraction support screw, an upper pedicle screw, and a lower pedicle screw.
  • the invention can achieve effective reduction of fractured vertebral bodies, sufficient front support, and at the same time ensure the stability of the spine, has good application and promotion value, and can be mass produced.

Landscapes

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

Abstract

一种横向连接装置，其包括连接杆（23），连接杆（23）上设有夹持头（24），夹持头（24）的下端设有两个夹持臂（26，28），两个夹持臂（26，28）之间形成夹持槽（25），两个夹持臂（26，28）中的一个夹持臂（28）上设有横向通孔（32），横向通孔（32）内设有第一滑块（27），夹持头（24）上设有与横向通孔（32）相连通的竖向通孔（31），竖向通孔（31）内螺纹连接有螺塞（29），螺塞（29）的下端与第一滑块（27）的远离夹持槽（25）的侧面相抵，当螺塞（29）旋入竖向通孔（31）时，螺塞（29）推动第一滑块（27）沿着横向通孔（32）向夹持槽（25）内滑动。一种使用上述横向连接装置的复位固定系统，其还包括椎体撑开支撑钉、上椎弓根螺钉（39）和下椎弓根螺钉（41）。系统能够实现骨折椎体的有效复位、前方足够支撑，同时保障了脊柱的稳定性。

Description

横向连接装置及使用其的复位固定系统
本发明是要求由申请人提出的，申请日为2022年06月23日，申请号为CN202210718490.3，名称为“横向连接装置及使用其的复位固定系统”、申请日为2022年06月23日，申请号为CN202221587782.X，名称为“横向连接装置及使用其的复位固定系统”、申请日为2022年06月23日，申请号为CN202210718502.2，名称为“横向连接器及使用其的复位固定系统”以及申请日为2022年06月23日，申请号为CN202221588589.8，名称为“横向连接器及使用其的复位固定系统”的申请的优先权。以上申请的全部内容通过整体引用结合于此。
技术领域
本发明涉及一种医疗器械，特别是涉及一种用于脊柱的横向连接装置及使用其的复位固定系统。
发明背景
对于腰椎爆裂骨折患者，椎弓根钉棒系统固定复位机理是通过间接牵拉对骨折椎体进行复位，骨折椎体四周受椎间盘纤维环牵拉能够有效的复位，但前中柱中央骨块无法受到牵拉而复位，形成中央部塌陷缺损，造成复位不足，同时复位后椎体内会形成空腔，致使前方支撑不足，造成远期椎体高度进一步丢失甚至邻近节段椎间盘退变，部分患者甚至出现后凸畸形加重，残留腰背痛，甚至内固定失败。
后路短节段固定方式有两种，即：跨伤椎固定与联合伤椎置钉固定。跨伤椎固定可以在复位后对伤椎进一步处理，如伤椎复位不足，可以通过椎弓根通道再行椎体内复位，或复位后对椎体内空腔进行植骨。但学者们通过有限元、生物力学以及临床随访发现跨伤椎固定对于爆裂骨折固定的稳定性不足，极易失败。而短节段固定中联合伤椎平面置钉可以增加结构稳定性，避免跨节段固 定的四边形效应、悬挂效应，分散和减少了内固定负荷，因此可有效降低内固定失败及继发后凸的风险，更加符合脊柱的生物力学要求。
传统经伤椎的固定方式是先行邻近椎体及伤椎置钉，然后通过连接棒再行椎体复位，复位后即使伤椎复位不良或前方空腔过大，但伤椎椎体内复位、植骨通道被占用，无法进一步进行伤椎内操作。
发明内容
本发明要解决的技术问题是提供一种横向连接装置及使用其的复位固定系统，其实现了骨折椎体的有效复位、前方足够支撑，同时保障了脊柱的稳定性。
本发明中的横向连接装置，包括连接杆，所述连接杆上设有夹持头，所述夹持头的下端设有两个夹持臂，两个所述夹持臂之间形成夹持槽，两个所述夹持臂中的一个夹持臂上设有横向通孔，所述横向通孔内设有第一滑块，所述夹持头上设有与横向通孔相连通的竖向通孔，所述竖向通孔内螺纹连接有螺塞，所述螺塞的下端与第一滑块的远离夹持槽的侧面相抵，当所述螺塞旋入竖向通孔时，所述螺塞推动第一滑块沿着横向通孔向夹持槽内滑动，所述第一滑块上设有第一卡槽，所述横向通孔的孔壁上设有第一卡块，所述第一卡块位于所述第一卡槽内。
本发明中的横向连接装置，其中所述连接杆的两端分别设有所述夹持头，所述夹持头下端的两个夹持臂分别为第一夹持臂和第二夹持臂，所述第一夹持臂和第二夹持臂之间形成夹持槽，所述第一夹持臂或第二夹持臂上设有横向通孔。
本发明中的横向连接装置，其中所述连接杆的一端设有所述夹持头，所述夹持头下端的两个夹持臂分别为第一夹持臂和第二夹持臂，所述第一夹持臂和第二夹持臂之间形成夹持槽，所述第一夹持臂位于连接杆和第二夹持臂之间，所述第一夹持臂上设有横向通孔。
本发明中的使用上述横向连接装置的复位固定系统，包括椎体撑开支撑 钉、上椎弓根螺钉和下椎弓根螺钉，所述椎体撑开支撑钉安装在骨折椎体上，所述上椎弓根螺钉和下椎弓根螺钉分别安装在骨折椎体的上椎体和下椎体上，所述上椎弓根螺钉和下椎弓根螺钉之间连接有固定棒，所述横向连接装置的夹持头通过夹持槽夹住固定棒，所述横向连接装置的连接杆固定连接在椎体撑开支撑钉上。
本发明中的复位固定系统，其中所述椎体撑开支撑钉上固定连接有支撑块，所述支撑块上设有安装槽，所述横向连接装置的连接杆穿插设于所述安装槽内，所述安装槽的两个槽壁之间螺纹连接有螺钉，所述螺钉与横向连接装置的连接杆相抵，所述螺钉将连接杆固定于安装槽内。
本发明中的复位固定系统，其中所述椎体撑开支撑钉上固定连接有支撑块，所述支撑块上设有第一通孔，所述第一通孔的孔壁上设有第二通孔，所述横向连接装置的连接杆穿插设于所述第一通孔内，所述第二通孔为螺纹孔，所述第二通孔上螺纹连接有螺钉，所述螺钉与横向连接装置的连接杆相抵。
本发明中的复位固定系统，其中所述椎体撑开支撑钉包括钉本体和钉帽，所述钉本体包括内芯、外套筒和撑开球，所述内芯螺纹连接于外套筒内，所述内芯的上端和下端均延伸至外套筒外，所述内芯的下端设有锥形钉头，所述锥形钉头与外套筒下端之间的内芯上套装有撑开球，所述钉帽包括上钉帽和加压帽，所述上钉帽为筒状结构，所述上钉帽的筒腔下端连接于外套筒的上端，所述内芯的上端延伸至上钉帽的筒腔上端，所述内芯的上端卡合滑动连接有所述加压帽，所述加压帽与上钉帽之间为卡合滑动连接，所述加压帽能够沿着内芯和上钉帽的轴向滑动，当所述加压帽沿着上钉帽的轴向向上滑动而与上钉帽解除卡合滑动连接时，所述加压帽仍然与内芯保持卡合滑动连接，当所述锥形钉头靠近外套筒的下端运动时，所述撑开球撑开，所述锥形钉头和处于撑开状态的撑开球均位于骨折椎体内，所述支撑块固定连接在外套筒的外筒壁上，所述支撑块位于骨折椎体外。
本发明中的复位固定系统，其中所述撑开球包括上套环和下套环，所述上套环和下套环均套装在锥形钉头与外套筒下端之间的内芯上，所述上套环与外 套筒的下端相抵，所述下套环与锥形钉头的上端相抵，所述上套环和下套环之间固定连接有多个撑开片，多个所述撑开片沿内芯的周向环绕布置，当所述锥形钉头靠近外套筒的下端运动时，所述撑开片能够向远离内芯的方向凸起变形，所述上钉帽上固定连接有两个第一支耳，所述加压帽上固定连接有两个第二支耳。
本发明中的复位固定系统，其中所述上钉帽包括一体成型的上筒体和下筒体，所述上筒体的内筒径大于下筒体的内筒径，所述外套筒的上端为中空棱柱结构，所述下筒体的筒腔下部为与外套筒的上端相匹配的棱柱形，所述下筒体的筒腔上部设有第一卡台，所述下筒体的筒腔下部套装在外套筒的上端，所述外套筒的上端与所述第一卡台相抵，所述内芯的上端穿过下筒体的筒腔后延伸至上筒体的筒腔内。
本发明中的复位固定系统，其中所述外套筒的外筒壁上设有第二卡台，所述下筒体的下端与第二卡台相抵。
本发明中的复位固定系统，其中所述内芯的上端为棱柱结构，所述加压帽为筒状结构，所述加压帽的筒腔为与内芯的上端相匹配的棱柱形，所述加压帽套装在内芯的上端，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端。
本发明在使用的时候，分别将上椎弓根螺钉和下椎弓根螺钉安装在骨折椎体的上椎体和下椎体上，之后再将椎体撑开支撑钉安装在骨折椎体上，接着再将横向连接装置的夹持头通过夹持槽夹住固定棒，将横向连接装置的连接杆固定连接在椎体撑开支撑钉上。这样，通过椎体撑开支撑钉将骨折椎体的内部撑开，即将骨折椎体的塌陷骨块撑起，之后再通过椎弓根螺钉和固定棒对骨折椎体进行牵拉复位，最后再通过横向连接装置将椎体撑开支撑钉、固定棒以及椎弓根螺钉固定连接在一起，从而实现了骨折椎体的有效复位、前方足够支撑，同时保障了脊柱的稳定性。
下面结合附图对本发明作进一步说明。
附图简要说明
图1为本发明实施例一中横向连接装置的结构示意图一；
图2为本发明实施例一中横向连接装置的结构示意图二；
图3为本发明实施例一中夹持头的主视图；
图4为本发明实施例一中夹持头的后视图；
图5为本发明实施例一中夹持头的俯视图；
图6为沿图5中A-A线的剖视图；
图7为本发明实施例一中夹持头的立体图一；
图8为本发明实施例一中夹持头的立体图二；
图9为本发明实施例一中夹持头的立体图三；
图10为本发明实施例一中夹持头的俯视图(隐藏螺塞、第一滑块和第一卡块)；
图11为沿图10中B-B线的剖视图；
图12为本发明实施例一中夹持头的立体图一(隐藏螺塞、第一滑块和第一卡块)；
图13为本发明实施例一中夹持头的立体图二(隐藏螺塞、第一滑块和第一卡块)；
图14为本发明实施例一中螺塞、第一滑块和第一卡块的相对位置关系图；
图15为本发明实施例一中螺塞的主视图；
图16为本发明实施例一中螺塞的立体图；
图17为本发明实施例一中第一滑块的立体图一；
图18为本发明实施例一中第一滑块的立体图二；
图19为本发明实施例一中上椎弓根螺钉、下椎弓根螺钉和固定棒的相对位置关系图；
图20为本发明实施例一中上椎弓根螺钉的主视图(同时也是下椎弓根螺 钉的主视图)；
图21为本发明实施例一中上椎弓根螺钉的主视剖视图(同时也是下椎弓根螺钉的主视剖视图)；
图22为本发明实施例一中椎体撑开支撑钉的主视图；
图23为本发明实施例一中椎体撑开支撑钉的主视剖视图；
图24为本发明实施例一中内芯的主视图；
图25为图24的俯视图；
图26为本发明实施例一中外套筒的主视图；
图27为本发明实施例一中外套筒的主视剖视图；
图28为图26的俯视图；
图29为本发明实施例一中撑开球的主视图(撑开球处于收缩状态)；
图30为本发明实施例一中撑开球的主视图(撑开球处于撑开状态)；
图31为图30的俯视图；
图32为本发明实施例一中撑开球的主视剖视图(撑开球处于撑开状态)；
图33为本发明实施例一中上钉帽的主视图；
图34为本发明实施例一中上钉帽的主视剖视图；
图35为本发明实施例一中上钉帽的俯视图；
图36为本发明实施例一中上钉帽的仰视图；
图37为本发明实施例一中加压帽的主视图；
图38为本发明实施例一中加压帽的主视剖视图；
图39为本发明实施例一中加压帽的左视图(同时也是右视图)；
图40为本发明实施例一中加压帽的俯视图；
图41为本发明实施例一中加压帽的仰视图；
图42为本发明实施例一中内芯的又一主视图；
图43为图42的俯视图；
图44为本发明实施例一中加压帽的又一主视剖视图；
图45为本发明实施例一中加压帽的又一俯视图；
图46为本发明实施例一中外套筒的又一主视图；
图47为图46的俯视图；
图48为本发明实施例一中上钉帽的又一主视剖视图；
图49为本发明实施例一中上钉帽的又一仰视图；
图50为本发明实施例一中椎体撑开支撑钉的使用状态图一；
图51为本发明实施例一中椎体撑开支撑钉的使用状态图二；
图52为图50所示加压帽与上钉帽之间的相对位置关系图；
图53为图51所示加压帽与上钉帽之间的相对位置关系图；
图54为本发明实施例一中复位固定系统的使用状态图；
图55为本发明实施例一中支撑块与连接杆的连接状态图；
图56为本发明实施例一中支撑块的俯视图；
图57为沿图56中C-C线的剖视图；
图58为本发明实施例一中螺钉的结构示意图；
图59为本发明实施例一中夹持头的夹持槽与固定棒的相对位置关系图一；
图60为本发明实施例一中夹持头的夹持槽与固定棒的相对位置关系图二；
图61为本发明实施例二中横向连接装置的结构示意图一；
图62为本发明实施例二中横向连接装置的结构示意图二；
图63为本发明实施例二中椎体撑开支撑钉的主视图；
图64为本发明实施例二中椎体撑开支撑钉的主视剖视图；
图65为本发明实施例二中椎体撑开支撑钉的使用状态图一；
图66为本发明实施例二中椎体撑开支撑钉的使用状态图二；
图67为本发明实施例二中复位固定系统的使用状态图；
图68为本发明实施例二中支撑块与连接杆的连接状态图；
图69为本发明实施例二中支撑块的俯视图；
图70为沿图69中D-D线的剖视图；
图71为本发明实施例二中螺钉的结构示意图。
实施本发明的方式
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
本发明的实施例中出现的术语“上”、“下”、“前”、“后”、“左”和“右”等指示的方向或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接；可以是直接相连，也可以通过中间媒介间接相连；对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。
实施例一
如图1所示，并结合图2-图18所示，本发明中的横向连接装置，包括连接杆23，连接杆23上设有夹持头24，具体为连接杆23的两端分别设有夹持头24。夹持头24的下端设有两个夹持臂，两个夹持臂之间形成夹持槽25，两个夹持臂中的一个夹持臂上设有横向通孔32，具体为夹持头24下端的两个夹持臂分别为第一夹持臂28和第二夹持臂26，第一夹持臂28和第二夹持臂26之间形成夹持槽25，第一夹持臂28或第二夹持臂26上设有横向通孔32。横向通孔32内设有第一滑块27，所述夹持头24上设有与横向通孔32相连通的竖向通孔31，所述竖向通孔31内螺纹连接有螺塞29，所述螺塞29的下端与第一滑块27的远离夹持槽25的侧面相抵，当所述螺塞29旋入竖向通孔31时， 所述螺塞29推动第一滑块27沿着横向通孔32向夹持槽25内滑动。所述第一滑块27上设有第一卡槽36，所述横向通孔32的孔壁上设有第一卡块30，所述第一卡块30位于所述第一卡槽36内。
连接杆23呈U型，两个夹持头24分别固定连接在连接杆23的两端。对于每个夹持头24来说，第一夹持臂28靠近连接杆23端头布置，而第二夹持臂26远离连接杆23端头布置。在本实施例中，第一夹持臂28上设有横向通孔32。
如图15、图16所示，螺塞29呈圆柱形，螺塞29与竖向通孔31同轴布置，螺塞29的上半部34直径大于下半部35直径，螺塞29的上半部34外侧壁上设有螺纹，螺塞29的上半部34顶面上设有多边形沉槽，将旋转工具的一端插入多边形沉槽内，之后转动旋转工具即可将螺塞29旋入或旋出竖向通孔31。螺塞29的下半部35下端为圆弧凸面。
如图3、图4所示，夹持槽25呈圆弧状。如图17、图18所示，第一滑块27呈圆柱形，第一滑块27与横向通孔32同轴布置，第一滑块27的一个端面37远离夹持槽25布置，第一滑块27的另一个端面38靠近夹持槽25布置。第一滑块27的远离夹持槽25的端面37即为上述的第一滑块27的远离夹持槽25的侧面。第一滑块27的远离夹持槽25的端面37为弧形凹面，以便与螺塞29的下半部35下端相匹配；第一滑块27的靠近夹持槽25的端面38也为弧形凹面，以便与夹持槽25的形状相匹配。第一滑块27的外圆周壁上设有第一卡槽36，第一卡槽36呈条状，并且第一卡槽36沿第一滑块27的轴向布置。
如图6所示，并结合图11、图14所示，第一卡块30呈圆柱形，第一夹持臂28的下端设有安装孔33，该安装孔33连通横向通孔32，第一卡块30固定设于安装孔33内，第一卡块30的上端延伸至横向通孔32内，并且第一卡块30的上端位于第一滑块27的第一卡槽36内。
在将螺塞29旋入竖向通孔31时，螺塞29的下半部35下端与第一滑块27的远离夹持槽25的端面37相抵，随着螺塞29继续旋入，螺塞29推动第一滑块27沿着横向通孔32向夹持槽25滑动，当滑动到一定位置时，由于第 一卡块30的阻挡作用，第一滑块27不再滑动。在将螺塞29旋出竖向通孔31后，可以推动第一滑块27沿着横向通孔32向远离夹持槽25的方向滑动，当滑动到一定位置时，同样由于第一卡块30的阻挡作用，第一滑块27不再滑动。
如图54所示，本发明中的使用上述横向连接装置的复位固定系统，包括椎体撑开支撑钉、上椎弓根螺钉39和下椎弓根螺钉41，所述椎体撑开支撑钉安装在骨折椎体22上，所述上椎弓根螺钉39和下椎弓根螺钉41分别安装在骨折椎体22的上椎体53和下椎体54上，所述上椎弓根螺钉39和下椎弓根螺钉41之间连接有固定棒40，所述横向连接装置的夹持头24通过夹持槽25夹住固定棒40，所述横向连接装置的连接杆23固定连接在椎体撑开支撑钉上。
横向连接装置的两个夹持头24分别通过自身的夹持槽25夹住固定棒40，两个夹持头24分别位于椎体撑开支撑钉的上方和下方。
如图19所示，并结合图20、图21所示，上椎弓根螺钉39和下椎弓根螺钉41的结构相同，其均包括呈桶状的螺钉座43，螺钉座43的底壁上设有螺钉杆45，螺钉座43的侧壁上设有容置固定棒40的U型槽口，螺钉座43的内腔设有垫块44和固定塞42，垫块44位于固定塞42的下方，固定塞42螺纹连接于螺钉座43内，固定棒40位于固定塞42和垫块44之间。将固定塞42旋入螺钉座43时，固定塞42能够与垫块44夹紧固定棒40，从而将固定棒40与椎弓根螺钉39、41固定连接。
如图22所示，并结合图23、图50、图51、图54-图58所示，本发明中的复位固定系统，其中所述椎体撑开支撑钉上固定连接有支撑块47，所述支撑块47上设有安装槽48，所述横向连接装置的连接杆23穿插设于所述安装槽48内，所述安装槽48的两个槽壁之间螺纹连接有螺钉46，所述螺钉46与横向连接装置的连接杆23相抵，所述螺钉46将连接杆23固定于安装槽48内。
在安装横向连接装置时，将两个夹持头24的夹持槽25卡在固定棒40上，再将连接杆23置于支撑块47的安装槽48内，之后将每个夹持头24的螺塞29旋入各自的竖向通孔31内，使每个夹持头24均通过各自的夹持槽25夹住固定棒40，之后再将螺钉46旋入安装槽48内，直至螺钉46与连接杆23相 抵，此时螺钉46将连接杆23与支撑块47固定连接在一起，同时，横向连接装置也将椎体撑开支撑钉、固定棒40以及椎弓根螺钉39、41固定连接在一起。
如图59、图60所示，在将横向连接装置的夹持头24通过夹持槽25夹住固定棒40时，首先将螺塞29旋出竖向通孔31，之后推动第一滑块27向远离夹持槽25的方向滑动，此时将夹持槽25卡在固定棒40上，接着再将螺塞29旋入竖向通孔31，螺塞29推动第一滑块27向夹持槽25方向滑动，直至第一滑块27的靠近夹持槽25的端面38与固定棒40相抵，此时，横向连接装置的夹持头24通过夹持槽25将固定棒40夹紧，即横向连接装置与固定棒40固定连接在一起。
如图22所示，并结合图23-图55所示，椎体撑开支撑钉包括钉本体和钉帽，所述钉本体包括内芯13、外套筒6和撑开球10，所述内芯13螺纹连接于外套筒6内，所述内芯13的上端14和下端均延伸至外套筒6外，所述内芯13的下端设有锥形钉头11，所述锥形钉头11与外套筒6下端之间的内芯13上套装有撑开球10，所述钉帽包括上钉帽4和加压帽12，所述上钉帽4为筒状结构，所述上钉帽4的筒腔下端连接于外套筒6的上端16，所述内芯13的上端14延伸至上钉帽4的筒腔上端，所述内芯13的上端14卡合滑动连接有加压帽12，所述加压帽12与上钉帽4之间为卡合滑动连接，所述加压帽12能够沿着内芯13和上钉帽4的轴向滑动，当所述加压帽12沿着上钉帽4的轴向向上滑动而与上钉帽4解除卡合滑动连接时，所述加压帽12仍然与内芯13保持卡合滑动连接，当所述锥形钉头11靠近外套筒6的下端运动时，所述撑开球10撑开。所述锥形钉头11和处于撑开状态的撑开球10均位于骨折椎体22内，所述支撑块47固定连接在外套筒6的外筒壁上，所述支撑块47位于骨折椎体22外。
如图50所示，并结合图51-图55所示，椎体撑开支撑钉在使用的时候，将锥形钉头11对准骨折椎体22，之后转动上钉帽4将钉本体的下端旋入骨折椎体22内，在此过程中，钉本体和钉帽作为整体进行转动，即钉本体与钉帽之间、钉本体的各个部件之间以及钉帽的各个部件之间并无相对转动，之后沿 着上钉帽4的轴向向上滑动加压帽12，使加压帽12与上钉帽4之间解除卡合滑动连接，此时加压帽12仍然与内芯13保持卡合滑动连接，接着保持上钉帽4和外套筒6不动，而转动加压帽12，加压帽12带动内芯13转动，由于内芯13与外套筒6之间为螺纹连接，因此，内芯13能够相对于外套筒6向上运动，进而导致锥形钉头11向上靠近外套筒6的下端运动，使撑开球10撑开，这样处于撑开状态的撑开球10就将骨折椎体22的塌陷骨块撑起，接着剪断骨折椎体22外侧的外套筒6和内芯13即可。由此可见，椎体撑开支撑钉能够从骨折椎体22的内部撑开塌陷骨块，使骨折椎体22良好复位，减少远期并发症的发生。在上述椎体撑开支撑钉的使用过程中，由于支撑块47固定连接在外套筒6的外筒壁上，因此，支撑块47跟随外套筒6一起动作。
如图22所示，并结合图23、图29-图32、图50、图51、图55所示，撑开球10包括上套环7和下套环9，所述上套环7和下套环9均套装在锥形钉头11与外套筒6下端之间的内芯13上，所述上套环7与外套筒6的下端相抵，所述下套环9与锥形钉头11的上端相抵，所述上套环7和下套环9之间固定连接有多个撑开片8，多个所述撑开片8沿内芯13的周向环绕布置，当所述锥形钉头11靠近外套筒6的下端运动时，所述撑开片8能够向远离内芯13的方向凸起变形，即撑开。
如图22所示，并结合图23、图33-图41所示，上钉帽4上固定连接有两个第一支耳5，加压帽12上固定连接有两个第二支耳1。两个第一支耳5分别固定连接在上钉帽4的相对两侧，两个第二支耳1分别固定连接在加压帽12的相对两侧。通过设置支耳，能够方便地转动上钉帽4和加压帽12。
如图22所示，并结合图23、图33-图36所示，上钉帽4包括一体成型的上筒体2和下筒体3，所述上筒体2的内筒径大于下筒体3的内筒径，并且上筒体2的外筒径也大于下筒体3的外筒径。两个第一支耳5分别固定连接在下筒体3的相对两侧。结合图26-图28所示，外套筒6的上端16为中空棱柱结构，所述下筒体3的筒腔下部为与外套筒6的上端16相匹配的棱柱形，所述下筒体3的筒腔上部设有第一卡台20，所述下筒体3的筒腔下部套装在外套 筒6的上端16，所述外套筒6的上端16与所述第一卡台20相抵，所述内芯13的上端14穿过下筒体3的筒腔后延伸至上筒体2的筒腔内。
在本实施例中，外套筒6的上端16为中空三棱柱结构，与之相匹配，下筒体3的筒腔下部也为三棱柱形。至于第一卡台20，其是通过以下方式形成的：下筒体3的筒腔上部为圆柱形，并且该圆柱形筒腔的孔径小于下方三棱柱形筒腔的孔径，这样在下筒体3的筒腔上下部之间形成第一卡台20，也即上述的在下筒体3的筒腔上部形成第一卡台20。
除了上述的下筒体3与外套筒6的连接方式外，其还可以通过以下方式进行连接：如图46所示，并结合图47-图49所示，外套筒6的上端16外侧壁上设有第二滑块51，下筒体3的筒腔下部设有轴向布置的滑槽52，当下筒体3的筒腔下部套装在外套筒6的上端16后，第二滑块51位于滑槽52内。当然，也可以将第二滑块51和滑槽52的位置进行对调，即外套筒6的上端16外侧壁上设有轴向布置的滑槽52，下筒体3的筒腔下部设有第二滑块51，当下筒体3的筒腔下部套装在外套筒6的上端16后，第二滑块51位于滑槽52内。
在下筒体3的筒腔下部套装在外套筒6的上端16后，下筒体3与外套筒6的上端16之间既可以为过盈配合，也可以为间隙配合，因为这两种配合方式均能保证上钉帽4与外套筒6一起转动或者不转动，即在转动上钉帽4时，上钉帽4能够带动外套筒6作同步转动，而上钉帽4在不转动时，外套筒6也不会发生转动。
如图23所示，并结合图26-图28所示，外套筒6的外筒壁上设有第二卡台17，下筒体3的下端与第二卡台17相抵，以使下筒体3与外套筒6的配合更加紧密。第二卡台17是通过以下方式形成的：不管外套筒6的上端16是如何与下筒体3进行连接的，只要外套筒6的上端16外径有小于下端外径的部分即可在上下端之间形成第二卡台17，以图26-图28所示为例，外套筒6上端的中空三棱柱结构的三个侧面处的外径均小于外套筒6下端的外径，这样在外套筒6的上下端之间即形成第二卡台17。
如图23所示，并结合图24、图25、图34、图35、图37-图41、图50- 图53所示，内芯13的上端14为棱柱结构，所述加压帽12为筒状结构，所述加压帽12的筒腔为与内芯13的上端14相匹配的棱柱形，所述加压帽12套装在内芯13的上端14，所述加压帽12的外筒壁上固定设有第二卡块21，所述上筒体2的内筒壁上设有轴向布置的第二卡槽19，所述第二卡块21位于第二卡槽19内，所述第二卡块21能够沿着第二卡槽19滑动，所述加压帽12沿着上钉帽4的轴向向上滑动而使第二卡块21脱离第二卡槽19时，所述加压帽12仍然套装在内芯13的上端14。
在本实施例中，内芯13的上端14为三棱柱结构，与之相匹配，加压帽12的筒腔为三棱柱形，这样加压帽12在套装到内芯13的上端14后，两者之间就实现了卡合滑动连接，即加压帽12能够沿着内芯13的轴向进行上下滑动，但是加压帽12不能相对于内芯13进行周向转动，而只能是当加压帽12转动时，其带动内芯13一起作同步转动，当加压帽12不转动时，内芯13也不发生转动。
加压帽12与上钉帽4之间通过第二卡块21和第二卡槽19实现卡合滑动连接，即加压帽12能够沿着上钉帽4的轴向进行上下滑动，此时第二卡块21沿着第二卡槽19进行上下滑动，但是由于第二卡块21和第二卡槽19的限位作用，加压帽12并不能相对于上钉帽4进行周向转动，而只能是两者一起作同步转动，即上钉帽4转动时，其带动加压帽12一起作同步转动。当加压帽12沿着上钉帽4的轴向向上滑动而使第二卡块21脱离第二卡槽19时，加压帽12与上钉帽4之间解除卡合滑动连接，而此时，加压帽12仍然套装在内芯13的上端14，即两者之间仍然保持卡合滑动连接，这个时候转动加压帽12，加压帽12能够带动内芯13一起相对于上钉帽4转动，为了方便操作，在转动加压帽12时，可以使第二卡块21贴着上筒体2的上端面滑动(如图51所示)。由于上钉帽4与外套筒6之间保持同步转动或不转动，并且内芯13与外套筒6之间为螺纹连接，因此，在加压帽12带动内芯13相对于上钉帽4转动时，内芯13也相对于外套筒6发生转动，这样内芯13能够相对于外套筒6向上运动，于是内芯13下端的锥形钉头11就靠近外套筒6的下端运动，进而挤压撑 开球10的上套环7和下套环9，使两个套环作相互靠近的运动，于是撑开片8向远离内芯13的方向凸起变形，即处于撑开状态，如图51所示。
如图22所示，并结合图23、图24、图27所示，锥形钉头11的外侧壁上设有旋进螺纹，方便锥形钉头11旋入骨折椎体22。内芯13两端之间的芯体外侧壁上还设有外螺纹15，外套筒6的内筒壁上设有内螺纹18，内芯13和外套筒6通过外螺纹15和内螺纹18实现螺纹连接，当相对于外套筒6转动内芯13时，内芯13能够相对于外套筒6向上或向下运动，在本实施例中，为了使锥形钉头11靠近外套筒6的下端运动而让撑开球10处于撑开状态，只能是使内芯13相对于外套筒6向上运动。
当然，加压帽12与内芯13上端之间还可以通过以下方式实现卡合滑动连接：如图42所示，并结合图43-图45所示，内芯13的上端14外侧壁上设有轴向布置的凸块49，所述加压帽12的筒腔内设有轴向布置的凹槽50，当加压帽12套装在内芯13的上端14以后，所述凸块49位于凹槽50内，所述凸块49能够沿凹槽50滑动，所述加压帽12沿着上钉帽4的轴向向上滑动而使第二卡块21脱离第二卡槽19时，所述加压帽12仍然套装在内芯13的上端14并且凸块49位于凹槽50内。当然，也可以将凸块49和凹槽50的位置进行对调，即内芯13的上端14外侧壁上设有轴向布置的凹槽50，所述加压帽12的筒腔内设有轴向布置的凸块49。在凸块49和凹槽50的限位作用下，加压帽12能够沿着内芯13的轴向进行上下滑动，此过程中，凸块49也沿着凹槽50进行上下滑动，但是，加压帽12不能相对于内芯13进行周向转动，当加压帽12转动时，其带动内芯13一起作同步转动，当加压帽12不转动时，内芯13也不会发生转动。
如图50所示，并结合图51-图55所示，椎体撑开支撑钉在使用的时候，将锥形钉头11对准骨折椎体22，之后通过第一支耳5转动上钉帽4，将钉本体的下端旋入骨折椎体22内，在此过程中，钉本体和钉帽作为整体进行转动，即钉本体与钉帽之间、钉本体的各个部件之间以及钉帽的各个部件之间并无相对转动，之后沿着上钉帽4的轴向向上滑动加压帽12，使加压帽12与上钉帽 4之间解除卡合滑动连接(即第二卡块21脱离第二卡槽19)，此时加压帽12仍然与内芯13保持卡合滑动连接，接着保持上钉帽4和外套筒6不动，而通过第二支耳1转动加压帽12，加压帽12带动内芯13转动，由于内芯13与外套筒6之间为螺纹连接，因此，内芯13能够相对于外套筒6向上运动，进而导致锥形钉头11向上靠近外套筒6的下端运动，使撑开球10撑开，这样处于撑开状态的撑开球10就将骨折椎体22的塌陷骨块撑起，接着剪断骨折椎体22外侧的外套筒6和内芯13即可。在完成复位操作后，撑开球10以及内芯13和外套筒6的各一部分均留在骨折椎体22内，不再取出。由于留在骨折椎体22上的内芯13和外套筒6之间仍保持螺纹连接，因此，骨折椎体22内的撑开球10能够一直保持撑开状态。由此可见，椎体撑开支撑钉能够从骨折椎体22的内部撑开塌陷骨块，使骨折椎体22良好复位，减少远期并发症的发生。
本发明在使用的时候，分别将上椎弓根螺钉39和下椎弓根螺钉41安装在骨折椎体22的上椎体53和下椎体54上，之后再将椎体撑开支撑钉安装在骨折椎体22上，接着再将横向连接装置的夹持头24通过夹持槽25夹住固定棒40，将横向连接装置的连接杆23固定连接在椎体撑开支撑钉上。这样，通过椎体撑开支撑钉将骨折椎体22的内部撑开，即将骨折椎体22的塌陷骨块撑起，之后再通过椎弓根螺钉39、41和固定棒40对骨折椎体22进行牵拉复位，最后再通过横向连接装置将椎体撑开支撑钉、固定棒40以及椎弓根螺钉39、41固定连接在一起，从而实现了骨折椎体22的有效复位、前方足够支撑，同时保障了脊柱的稳定性。由此可见，本发明可以实现伤椎置钉后内撑开压缩锥体，使椎体复位更佳，对前路进行了支撑，大大避免了远期的内固定失败的发生，同时撑开球10、内芯13和外套筒6的材质均为钛合金或钽金属，与骨的相容性更好，实现了更好的骨愈合与骨长入。
实施例二
如图61所示，并结合图62-图71所示，本实施例与实施例一的区别在于：
横向连接装置的连接杆59呈一字型，连接杆59的一端设有夹持头24，连接杆59与夹持头24固定连接，更具体的，连接杆59与夹持头24为一体成 型结构。对于夹持头24下端的两个夹持臂来说，第一夹持臂28位于连接杆59和第二夹持臂26之间，第一夹持臂28上设有横向通孔32。
椎体撑开支撑钉上固定连接有支撑块57，支撑块57上设有第一通孔58，第一通孔58的孔壁上设有第二通孔55，横向连接装置的连接杆59穿插设于第一通孔58内，第二通孔55为螺纹孔，第二通孔55上螺纹连接有螺钉56，螺钉56与横向连接装置的连接杆59相抵。
在安装横向连接装置时，先将横向连接装置的连接杆59插入到支撑块57的第一通孔58内，之后再将横向连接装置的夹持头24通过夹持槽25夹住固定棒40，之后再将螺钉56旋入第二通孔55，直至螺钉56与横向连接装置的连接杆59相抵，此时螺钉56就将横向连接装置的连接杆59与支撑块57固定连接在一起，同时，横向连接装置也将椎体撑开支撑钉、固定棒40以及椎弓根螺钉39、41固定连接在一起。
综上所述，本实施例与实施例一的不同之处就在于横向连接装置的结构不相同，具体为连接杆59呈一字型，并且在连接杆59的一端只固定连接有一个夹持头24，当然，夹持头24的结构以及工作原理与实施例一的夹持头24完全相同。由于存在上述不同，本实施例的横向连接装置与椎体撑开支撑钉固定连接的方式也与实施例一不相同(即本实施例的连接杆59和支撑块57的固定连接方式与实施例一的连接杆23和支撑块47的固定连接方式不相同)，并且本实施例的横向连接装置只通过一个夹持头24与固定棒40固定连接，而实施例一的横向连接装置通过两个夹持头24与固定棒40固定连接。除了上面所说的不同之外，本实施例与实施例一的其他部分均相同。
以上所述的实施例仅仅是对本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明权利要求书确定的保护范围内。
工业实用性
本发明实施例的横向连接装置包括连接杆，连接杆上设有夹持头，夹持头的下端设有两个夹持臂，两个夹持臂之间形成夹持槽，两个夹持臂中的一个夹持臂上设有横向通孔，横向通孔内设有第一滑块，夹持头上设有与横向通孔相连通的竖向通孔，竖向通孔内螺纹连接有螺塞，螺塞的下端与第一滑块的远离夹持槽的侧面相抵，当螺塞旋入竖向通孔时，螺塞推动第一滑块沿着横向通孔向夹持槽内滑动。本发明实施例的使用上述横向连接装置的复位固定系统，还包括椎体撑开支撑钉、上椎弓根螺钉和下椎弓根螺钉。本发明能够实现骨折椎体的有效复位、前方足够支撑，同时保障了脊柱的稳定性，具有很好的应用推广价值，并且能够批量生产制造。

Claims (19)

  1. 一种横向连接装置，其特征在于：包括连接杆，所述连接杆上设有夹持头，所述夹持头的下端设有两个夹持臂，两个所述夹持臂之间形成夹持槽，两个所述夹持臂中的一个夹持臂上设有横向通孔，所述横向通孔内设有第一滑块，所述夹持头上设有与横向通孔相连通的竖向通孔，所述竖向通孔内螺纹连接有螺塞，所述螺塞的下端与第一滑块的远离夹持槽的侧面相抵，当所述螺塞旋入竖向通孔时，所述螺塞推动第一滑块沿着横向通孔向夹持槽内滑动，所述第一滑块上设有第一卡槽，所述横向通孔的孔壁上设有第一卡块，所述第一卡块位于所述第一卡槽内。
  2. 根据权利要求1所述的横向连接装置，其特征在于：所述连接杆的两端分别设有所述夹持头，所述夹持头下端的两个夹持臂分别为第一夹持臂和第二夹持臂，所述第一夹持臂和第二夹持臂之间形成夹持槽，所述第一夹持臂或第二夹持臂上设有横向通孔。
  3. 根据权利要求1所述的横向连接装置，其特征在于：所述连接杆的一端设有所述夹持头，所述夹持头下端的两个夹持臂分别为第一夹持臂和第二夹持臂，所述第一夹持臂和第二夹持臂之间形成夹持槽，所述第一夹持臂位于连接杆和第二夹持臂之间，所述第一夹持臂上设有横向通孔。
  4. 一种使用权利要求2所述横向连接装置的复位固定系统，其特征在于：包括椎体撑开支撑钉、上椎弓根螺钉和下椎弓根螺钉，所述椎体撑开支撑钉安装在骨折椎体上，所述上椎弓根螺钉和下椎弓根螺钉分别安装在骨折椎体的上椎体和下椎体上，所述上椎弓根螺钉和下椎弓根螺钉之间连接有固定棒，所述横向连接装置的夹持头通过夹持槽夹住固定棒，所述横向连接装置的连接杆固定连接在椎体撑开支撑钉上。
  5. 根据权利要求4所述的复位固定系统，其特征在于：所述椎体撑开支撑钉上固定连接有支撑块，所述支撑块上设有安装槽，所述横向连接装置的连接杆穿插设于所述安装槽内，所述安装槽的两个槽壁之间螺纹连接有螺钉，所 述螺钉与横向连接装置的连接杆相抵，所述螺钉将连接杆固定于安装槽内。
  6. 根据权利要求5所述的复位固定系统，其特征在于：所述椎体撑开支撑钉包括钉本体和钉帽，所述钉本体包括内芯、外套筒和撑开球，所述内芯螺纹连接于外套筒内，所述内芯的上端和下端均延伸至外套筒外，所述内芯的下端设有锥形钉头，所述锥形钉头与外套筒下端之间的内芯上套装有撑开球，所述钉帽包括上钉帽和加压帽，所述上钉帽为筒状结构，所述上钉帽的筒腔下端连接于外套筒的上端，所述内芯的上端延伸至上钉帽的筒腔上端，所述内芯的上端卡合滑动连接有所述加压帽，所述加压帽与上钉帽之间为卡合滑动连接，所述加压帽能够沿着内芯和上钉帽的轴向滑动，当所述加压帽沿着上钉帽的轴向向上滑动而与上钉帽解除卡合滑动连接时，所述加压帽仍然与内芯保持卡合滑动连接，当所述锥形钉头靠近外套筒的下端运动时，所述撑开球撑开，所述锥形钉头和处于撑开状态的撑开球均位于骨折椎体内，所述支撑块固定连接在外套筒的外筒壁上，所述支撑块位于骨折椎体外。
  7. 根据权利要求6所述的复位固定系统，其特征在于：所述撑开球包括上套环和下套环，所述上套环和下套环均套装在锥形钉头与外套筒下端之间的内芯上，所述上套环与外套筒的下端相抵，所述下套环与锥形钉头的上端相抵，所述上套环和下套环之间固定连接有多个撑开片，多个所述撑开片沿内芯的周向环绕布置，当所述锥形钉头靠近外套筒的下端运动时，所述撑开片能够向远离内芯的方向凸起变形，所述上钉帽上固定连接有两个第一支耳，所述加压帽上固定连接有两个第二支耳。
  8. 根据权利要求7所述的复位固定系统，其特征在于：所述上钉帽包括一体成型的上筒体和下筒体，所述上筒体的内筒径大于下筒体的内筒径，所述外套筒的上端为中空棱柱结构，所述下筒体的筒腔下部为与外套筒的上端相匹配的棱柱形，所述下筒体的筒腔上部设有第一卡台，所述下筒体的筒腔下部套装在外套筒的上端，所述外套筒的上端与所述第一卡台相抵，所述内芯的上端穿过下筒体的筒腔后延伸至上筒体的筒腔内。
  9. 根据权利要求8所述的复位固定系统，其特征在于：所述外套筒的外 筒壁上设有第二卡台，所述下筒体的下端与第二卡台相抵。
  10. 根据权利要求9所述的复位固定系统，其特征在于：所述内芯的上端为棱柱结构，所述加压帽为筒状结构，所述加压帽的筒腔为与内芯的上端相匹配的棱柱形，所述加压帽套装在内芯的上端，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端。
  11. 根据权利要求9所述的复位固定系统，其特征在于：所述内芯的上端外侧壁上设有轴向布置的凸块，所述加压帽的筒腔内设有轴向布置的凹槽，所述加压帽套装在内芯的上端，所述凸块位于凹槽内，所述凸块能够沿凹槽滑动，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端并且凸块位于凹槽内，或者
    所述内芯的上端外侧壁上设有轴向布置的凹槽，所述加压帽的筒腔内设有轴向布置的凸块，所述加压帽套装在内芯的上端，所述凸块位于凹槽内，所述凸块能够沿凹槽滑动，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端并且凸块位于凹槽内。
  12. 一种使用权利要求3所述横向连接装置的复位固定系统，其特征在于：包括椎体撑开支撑钉、上椎弓根螺钉和下椎弓根螺钉，所述椎体撑开支撑钉安装在骨折椎体上，所述上椎弓根螺钉和下椎弓根螺钉分别安装在骨折椎体的上椎体和下椎体上，所述上椎弓根螺钉和下椎弓根螺钉之间连接有固定棒，所述横向连接装置的夹持头通过夹持槽夹住固定棒，所述横向连接装置的连接杆固 定连接在椎体撑开支撑钉上。
  13. 根据权利要求12所述的复位固定系统，其特征在于：所述椎体撑开支撑钉上固定连接有支撑块，所述支撑块上设有第一通孔，所述第一通孔的孔壁上设有第二通孔，所述横向连接装置的连接杆穿插设于所述第一通孔内，所述第二通孔为螺纹孔，所述第二通孔上螺纹连接有螺钉，所述螺钉与横向连接装置的连接杆相抵。
  14. 根据权利要求13所述的复位固定系统，其特征在于：所述椎体撑开支撑钉包括钉本体和钉帽，所述钉本体包括内芯、外套筒和撑开球，所述内芯螺纹连接于外套筒内，所述内芯的上端和下端均延伸至外套筒外，所述内芯的下端设有锥形钉头，所述锥形钉头与外套筒下端之间的内芯上套装有撑开球，所述钉帽包括上钉帽和加压帽，所述上钉帽为筒状结构，所述上钉帽的筒腔下端连接于外套筒的上端，所述内芯的上端延伸至上钉帽的筒腔上端，所述内芯的上端卡合滑动连接有所述加压帽，所述加压帽与上钉帽之间为卡合滑动连接，所述加压帽能够沿着内芯和上钉帽的轴向滑动，当所述加压帽沿着上钉帽的轴向向上滑动而与上钉帽解除卡合滑动连接时，所述加压帽仍然与内芯保持卡合滑动连接，当所述锥形钉头靠近外套筒的下端运动时，所述撑开球撑开，所述锥形钉头和处于撑开状态的撑开球均位于骨折椎体内，所述支撑块固定连接在外套筒的外筒壁上，所述支撑块位于骨折椎体外。
  15. 根据权利要求14所述的复位固定系统，其特征在于：所述撑开球包括上套环和下套环，所述上套环和下套环均套装在锥形钉头与外套筒下端之间的内芯上，所述上套环与外套筒的下端相抵，所述下套环与锥形钉头的上端相抵，所述上套环和下套环之间固定连接有多个撑开片，多个所述撑开片沿内芯的周向环绕布置，当所述锥形钉头靠近外套筒的下端运动时，所述撑开片能够向远离内芯的方向凸起变形，所述上钉帽上固定连接有两个第一支耳，所述加压帽上固定连接有两个第二支耳。
  16. 根据权利要求15所述的复位固定系统，其特征在于：所述上钉帽包括一体成型的上筒体和下筒体，所述上筒体的内筒径大于下筒体的内筒径，所 述外套筒的上端为中空棱柱结构，所述下筒体的筒腔下部为与外套筒的上端相匹配的棱柱形，所述下筒体的筒腔上部设有第一卡台，所述下筒体的筒腔下部套装在外套筒的上端，所述外套筒的上端与所述第一卡台相抵，所述内芯的上端穿过下筒体的筒腔后延伸至上筒体的筒腔内。
  17. 根据权利要求16所述的复位固定系统，其特征在于：所述外套筒的外筒壁上设有第二卡台，所述下筒体的下端与第二卡台相抵。
  18. 根据权利要求17所述的复位固定系统，其特征在于：所述内芯的上端为棱柱结构，所述加压帽为筒状结构，所述加压帽的筒腔为与内芯的上端相匹配的棱柱形，所述加压帽套装在内芯的上端，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端。
  19. 根据权利要求17所述的复位固定系统，其特征在于：所述内芯的上端外侧壁上设有轴向布置的凸块，所述加压帽的筒腔内设有轴向布置的凹槽，所述加压帽套装在内芯的上端，所述凸块位于凹槽内，所述凸块能够沿凹槽滑动，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端并且凸块位于凹槽内，或者
    所述内芯的上端外侧壁上设有轴向布置的凹槽，所述加压帽的筒腔内设有轴向布置的凸块，所述加压帽套装在内芯的上端，所述凸块位于凹槽内，所述凸块能够沿凹槽滑动，所述加压帽的外筒壁上固定设有第二卡块，所述上筒体的内筒壁上设有轴向布置的第二卡槽，所述第二卡块位于第二卡槽内，所述第二卡块能够沿着第二卡槽滑动，所述加压帽沿着上钉帽的轴向向上滑动而使第二卡块脱离第二卡槽时，所述加压帽仍然套装在内芯的上端并且凸块位于凹槽内。
PCT/CN2022/116683 2022-06-23 2022-09-02 横向连接装置及使用其的复位固定系统 WO2023245870A1 (zh)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN202221587782.XU CN218338508U (zh) 2022-06-23 2022-06-23 横向连接装置及使用其的复位固定系统
CN202221588589.8U CN218338509U (zh) 2022-06-23 2022-06-23 横向连接器及使用其的复位固定系统
CN202221587782.X 2022-06-23
CN202210718502.2A CN115054349B (zh) 2022-06-23 2022-06-23 横向连接器及使用其的复位固定系统
CN202210718490.3 2022-06-23
CN202210718490.3A CN114948155B (zh) 2022-06-23 2022-06-23 横向连接装置及使用其的复位固定系统
CN202221588589.8 2022-06-23
CN202210718502.2 2022-06-23

Publications (1)

Publication Number Publication Date
WO2023245870A1 true WO2023245870A1 (zh) 2023-12-28

Family

ID=89379036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/116683 WO2023245870A1 (zh) 2022-06-23 2022-09-02 横向连接装置及使用其的复位固定系统

Country Status (1)

Country Link
WO (1) WO2023245870A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100217325A1 (en) * 2008-11-03 2010-08-26 Hochschuler Stephen H Expandable spinal support device with attachable members and methods of use
US20160270826A1 (en) * 2015-03-20 2016-09-22 Trinity Orthopedics, Llc Bone anchoring assemblies and methods of use
CN106308909A (zh) * 2016-08-16 2017-01-11 广州聚生生物科技有限公司 经皮微创的伤椎复位系统
CN107582156A (zh) * 2017-09-08 2018-01-16 张巍 用于椎弓根螺钉的连接器和固定系统
CN213217538U (zh) * 2020-07-28 2021-05-18 苏州优贝特医疗器械有限公司 脊柱固定用横连器快捷夹爪
CN215018750U (zh) * 2020-12-28 2021-12-07 苏州微创脊柱创伤医疗科技有限公司 横连器及脊柱内固定系统
CN114948155A (zh) * 2022-06-23 2022-08-30 中国人民解放军总医院第四医学中心 横向连接装置及使用其的复位固定系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100217325A1 (en) * 2008-11-03 2010-08-26 Hochschuler Stephen H Expandable spinal support device with attachable members and methods of use
US20160270826A1 (en) * 2015-03-20 2016-09-22 Trinity Orthopedics, Llc Bone anchoring assemblies and methods of use
CN106308909A (zh) * 2016-08-16 2017-01-11 广州聚生生物科技有限公司 经皮微创的伤椎复位系统
CN107582156A (zh) * 2017-09-08 2018-01-16 张巍 用于椎弓根螺钉的连接器和固定系统
CN213217538U (zh) * 2020-07-28 2021-05-18 苏州优贝特医疗器械有限公司 脊柱固定用横连器快捷夹爪
CN215018750U (zh) * 2020-12-28 2021-12-07 苏州微创脊柱创伤医疗科技有限公司 横连器及脊柱内固定系统
CN114948155A (zh) * 2022-06-23 2022-08-30 中国人民解放军总医院第四医学中心 横向连接装置及使用其的复位固定系统

Similar Documents

Publication Publication Date Title
US20230073978A1 (en) Bone fusion system, device and method including an insertion instrument
US20220008223A1 (en) Bone fusion system, device and method including delivery apparatus
JP5210305B2 (ja) 脊椎ネジアセンブリシステム、脊椎ネジアセンブリを移植するためのシステム
US20220168032A1 (en) Active Compression Devices, Methods Of Assembly And Methods Of Use
JP4621731B2 (ja) 拡張可能な骨装置
US20090105771A1 (en) Multi-Axial Expandable Pedicle Screw and an Expansion Method Thereof
US10973657B2 (en) Bone fusion surgical system and method
JP2012523927A (ja) 脊椎構成物のための修正コネクタ
JP2011519673A (ja) 椎間インプラントを挿入するための方法および装置並びにそのための機器
US8177844B2 (en) Insertion apparatus for aligning cage of intervertebral fusion
JP2016526433A (ja) 整形外科用アンカー組立体
WO2023245870A1 (zh) 横向连接装置及使用其的复位固定系统
CN114948155B (zh) 横向连接装置及使用其的复位固定系统
CN112773485B (zh) 脊椎植入结构体
TWI711424B (zh) 椎體撐開植入物的操作工具
US20230270469A1 (en) Receiving part for coupling a rod to a bone anchor
WO2023245877A1 (zh) 椎体撑开支撑钉
CN218338508U (zh) 横向连接装置及使用其的复位固定系统
CN218338509U (zh) 横向连接器及使用其的复位固定系统
CN115054349B (zh) 横向连接器及使用其的复位固定系统
CN205107855U (zh) 横向移位钉尾、横向可调节脊柱螺钉
CN218075170U (zh) 椎体撑开支撑钉
CN115054351B (zh) 椎体撑开支撑钉
CN218075169U (zh) 椎体内撑开复位器
JP2005538821A (ja) インプラントの処理及び貯蔵の器具

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 17907254

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22947610

Country of ref document: EP

Kind code of ref document: A1