CN111772766A - Two-dimensional guider for pedicle channel screw - Google Patents

Two-dimensional guider for pedicle channel screw Download PDF

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Publication number
CN111772766A
CN111772766A CN202010808741.8A CN202010808741A CN111772766A CN 111772766 A CN111772766 A CN 111772766A CN 202010808741 A CN202010808741 A CN 202010808741A CN 111772766 A CN111772766 A CN 111772766A
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China
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sleeve
transverse
pedicle
guide
shaped
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Pending
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CN202010808741.8A
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Chinese (zh)
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邓迎生
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Individual
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Priority to CN202010808741.8A priority Critical patent/CN111772766A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7071Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8897Guide wires or guide pins
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/90Guides therefor

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  • 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

The invention discloses a two-dimensional guider for a pedicle channel screw, which comprises a base, a three-dimensional distance adjusting component arranged on the base and an angle adjusting component arranged at the other end of the three-dimensional distance adjusting component. The invention has simple structure and convenient operation, can accurately determine the direction of screw feeding at one time by utilizing the base, the angle adjusting component and the three-dimensional distance adjusting component, effectively avoids that a master knife doctor cannot accurately determine the direction of the screw feeding to cause the opener to penetrate out of the vertebral pedicle cortical bone or repeatedly adjust the direction of the opener to cause the holding force of the vertebral pedicle channel screw to be reduced, ensures the success of the internal fixation operation of the vertebral pedicle channel screw of the vertebral column, is convenient for the master knife doctor to operate, has extremely strong practicability and accurate positioning.

Description

Two-dimensional guider for pedicle channel screw
Technical Field
The invention belongs to the field of orthopedic surgery instruments, relates to a guider, and particularly relates to a two-dimensional guider for a pedicle channel screw.
Background
The spine pedicle of vertebral arch channel screw internal fixation operation is the basic technology of modern spine surgery, and the vertebral arch channel screw passes through the narrow pedicle of vertebral arch channel of the vertebral arch to fix the spine based on the anatomical characteristics of the vertebral arch. The vertebral body belongs to an irregular bone, the anatomy and the complexity are realized, the pedicle of vertebral arch channel not only has a pitching inclination angle relative to the cross section of a human body, but also has an external inclination angle relative to the sagittal plane of the human body, the internal and external diameters and the upper and lower diameters of the pedicle of vertebral arch are very narrow, particularly, in the cervical vertebra and the upper thoracic vertebra, the narrowest part of the pedicle of vertebral arch channel is less than 5mm, the external inclination angle and the pitching inclination angle have slight deviation, the bone cortex of the pedicle of vertebral arch can be broken through by the open circuit device, the precision required by scientific research cannot be achieved (the screw is accurately positioned and can be successfully placed once), the adjustment difficulty in the operation is very high, the failure. Therefore, the requirement of the internal fixation operation of the vertebral pedicle channel screw on the screw feeding direction of the spinal vertebral pedicle channel screw is extremely high, whether the screw feeding direction of the vertebral pedicle channel screw can be accurately determined becomes one of key factors for determining the success or failure of the operation on the premise of accurately positioning the screw feeding point in the operation process, the determination of the screw feeding direction needs to determine the central axis of the vertebral pedicle channel on the vertebra through a pitching inclination angle (an included angle between the central axis of the vertebral pedicle channel and the central cross section of the vertebral body on a CT sagittal plane or a lateral X-ray plate) and an internal inclination angle (an included angle between the central axis of the vertebral pedicle channel and the central axis of the vertebral body on a CT transverse plane, which cannot be.
At present, the direction of screw feeding in the spinal pedicle channel screw internal fixation operation is determined, after the position of a screw feeding point is determined, an operator generally uses a ground plane as reference, and estimates the direction of a channel opener after the angle adjustment of two planes according to a pitching inclination angle and a inwards inclination angle measured by preoperative data by experience and feeling, and the angle is used as the direction of the screw feeding. However, due to the fact that two variables of the pitching inclination angle and the inward inclination angle for controlling the nail feeding direction exist at the same time, the two variables are determined by the subjective judgment of a doctor of the main surgeon, the nail feeding direction cannot be accurately determined, in the operation, the pitching inclination angle can be measured, judged and adjusted through the lateral X-ray perspective of the spinal column, but the outward inclination angle cannot be measured through the X-ray perspective, and can only be judged by the hand feeling and the experience of the doctor. Meanwhile, the upper and lower diameters and the inner and outer diameters of the pedicle channel are very narrow (the inner and outer diameters are smaller), especially in the cervical vertebra and the upper thoracic vertebra, the narrowest part of the pedicle channel is less than 5mm, so that even under the condition that a nail feeding point and a pitching inclination angle are accurate, a pedicle channel screw can penetrate through cortical bone from any position such as the inner side wall and the outer side wall of the pedicle, and further damages surrounding important tissues; at present, a device capable of accurately determining the camber angle of the central axis of the pedicle channel on the vertebra is lacked, and is used for solving the problems.
Disclosure of Invention
The invention aims to provide a two-dimensional guider for a pedicle channel screw, which is characterized in that after a screw feeding point is determined, a vertical plane of a central axis of the pedicle channel is found by using a protractor for an included angle between a vertical line of the central axis of the pedicle channel and the lower edge of a spinous process so as to compensate a pitching inclination angle, the direction of an external inclination angle of the pedicle channel is adjusted by an angle adjusting component, and the angle adjusting component is aligned to the screw feeding point by a three-dimensional distance adjusting component, so that the aim of accurately positioning the screw feeding direction is fulfilled, and the problem that the screw feeding direction of the pedicle channel screw penetrates through a cortical bone to damage surrounding important tissues due.
The technical scheme adopted by the invention is as follows:
the utility model provides a pedicle of vertebral arch passageway screw two dimension director which characterized in that: the three-dimensional distance adjusting device comprises a base, a three-dimensional distance adjusting component arranged on the base and an angle adjusting component arranged at the other end of the three-dimensional distance adjusting component;
the base comprises a gate-shaped plate and a sagittal sleeve pipe arranged at the other end of the gate-shaped plate, the gate-shaped plate can be clamped and fixed on the spinous process, the sagittal sleeve pipe is used for being in sliding connection with the three-dimensional distance adjusting component, a datum needle is longitudinally arranged at the top of the gate-shaped plate and provides a reference datum for adjusting the nail feeding direction, and a positioning groove is vertically formed in the side wall of the gate-shaped plate, so that a perpendicular line (a mark line on the side of the spinous process) of the central axis of the pedicle of vertebral arch can be conveniently observed to adjust the gate-;
the three-dimensional distance adjusting component comprises a sagittal slide bar arranged in a sagittal sleeve, a transverse slide bar arranged above the sagittal slide bar, a transverse sleeve sleeved on the transverse slide bar, a longitudinal slide bar arranged on the transverse sleeve, and a longitudinal sleeve sleeved on the longitudinal slide bar, wherein the sagittal sleeve, the transverse sleeve and the longitudinal sleeve are provided with positioning components;
the angle adjusting component comprises a transverse arc scale rod arranged in a transverse arc sleeve and a guide block arranged at one end of the transverse arc scale rod, the transverse arc scale rod slides inside and outside the transverse arc sleeve to adjust the nail feeding direction, a locking component is arranged on the transverse arc sleeve, a guide hole is formed in the guide block in a penetrating mode, and the guide hole is used for penetrating through a road opener.
Furthermore, a clamping groove is formed in the top end of the door-shaped plate, a T-shaped clamping block is arranged in the clamping groove, a reference hole is formed in the T-shaped clamping block, and the reference needle is arranged in the reference hole.
Furthermore, concave grooves are formed in the inner side wall of the top of the door-shaped plate, convex plates are arranged between the concave grooves, needle grooves for allowing reference needles to penetrate through are formed in the convex plates, half of the reference needles are inserted into the spinous processes, in order to take the reference needles as reference, the nail feeding direction is convenient to determine, the rear ends of the reference needles penetrate through the needle grooves of the convex plates and are inserted into the reference holes of the T-shaped fixture blocks, the base is convenient to mount or dismount on the spinous processes, fixing holes are formed in the two side walls of the bottom of the door-shaped plate, fixing needles are arranged in the fixing holes and penetrate through the fixing holes to nail the base on the spinous processes, and the situation that the base moves in.
Furthermore, a positioning plate is arranged in the positioning groove, the positioning plate is designed to be of a plate-shaped structure with an L-shaped notch, and the positioning plate is better attached to the outer surface of the spinous process.
Further, the positioning component comprises positioning sliding grooves formed in the sagittal sleeve, the transverse sleeve and the longitudinal sleeve, and positioning bolts penetrating through the positioning sliding grooves and connected with the sagittal sliding rod, the transverse sliding rod and the longitudinal sliding rod.
Furthermore, the connecting rod perpendicularly connected with the middle of the transverse sliding rod is perpendicularly arranged at the top end of the sagittal sliding rod, rectangular sliding grooves capable of penetrating through the connecting rod are formed in the transverse sleeve and the vertical sleeve, and the adjusting range of the angle adjusting component is effectively enlarged.
Furthermore, a guide sleeve is arranged in the guide hole, the purpose is to increase the guide distance to enable the guide to be more accurate, and a locking component is arranged on the guide block and used for locking the guide sleeve in the guide hole.
Further, the locking member includes a locking threaded bore and a locking stud disposed within the threaded bore.
The invention has the beneficial effects that:
1. the invention has simple structure and convenient operation.
2. The invention adjusts the base to be parallel to the transverse section of the vertebral pedicle through the reference needle and the positioning groove on the base, then adjusts the camber angle to the accurate nail feeding direction through the angle adjusting component and adjusts the angle adjusting component to align to the nail feeding point through the three-dimensional distance adjusting component, can accurately determine the nail feeding direction at one time, effectively avoids the situation that a master knife doctor cannot accurately determine the nail feeding direction to cause the opening device to penetrate out of the cortical bone of the vertebral pedicle or repeatedly adjust the direction of the opening device to cause the reduction of the holding force of the screw of the vertebral pedicle channel, and ensures the success of the internal fixation operation of the screw of the vertebral pedicle channel of.
3. According to the three-dimensional distance adjusting component, the vertical position, the horizontal position and the longitudinal position of the angle adjusting component are adjusted by the sagittal slide rod, the horizontal slide rod and the longitudinal slide rod in the sagittal sleeve, the horizontal sleeve and the longitudinal sleeve respectively in a sliding manner, so that the three-dimensional distance adjusting component is convenient for a doctor to operate, and has extremely high practicability and accurate positioning.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a base according to the present invention;
FIG. 3 is an exploded view of the base of the present invention;
FIG. 4 is a schematic structural view of a three-dimensional distance adjustment member of the present invention;
FIG. 5 is a schematic view of the angle adjustment member of the present invention;
fig. 6 is a schematic view of the usage state of the present invention.
In the figure: 1. a base; 2. a door profile; 3. a vector slide bar; 4. a three-dimensional distance adjusting member; 5. a transverse sliding bar; 6. a transverse cannula; 7. a longitudinal slide bar; 8. a longitudinal sleeve; 9. a transverse arc-shaped sleeve; 10. an angle adjusting member; 11. a transverse arc-shaped scale bar; 12. a guide block; 13. a guide sleeve; 14. a convex plate; 15. a T-shaped fixture block; 16. a sagittal cannula; 17. positioning a plate; 18. a fixing pin; 19. a needle groove; 20. a reference pin; 21. a card slot; 22. a concave groove; 23. positioning grooves 24 and a circuit breaker; 25. transverse process; 26. a vertebral body; 27. the superior articular process; 28. a vertebral foramen; 29. a pedicle of a vertebral arch; 30. a spinous process.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention will be described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, 2, 3, 4 and 5, the two-dimensional guide for a pedicle screw provided by the invention comprises a base 1, a three-dimensional distance adjusting member 4 arranged on the base 1, and an angle adjusting member 10 arranged at the other end of the three-dimensional distance adjusting member 4;
the base 1 comprises a door-shaped plate 2 and a sagittal sleeve 16 arranged at the other end of the door-shaped plate 2, the door-shaped plate 2 can be clamped and fixed on spinous processes, the sagittal sleeve 16 is used for being in sliding connection with a three-dimensional distance adjusting component 4, the top end of the door-shaped plate 2 is provided with a clamping groove 21, a T-shaped clamping block 15 is arranged in the clamping groove 21, a datum hole is formed in the T-shaped clamping block 15, a datum needle 20 is arranged in the datum hole and provides a reference datum for adjusting the nail feeding direction, a positioning groove 23 is vertically formed in the side wall of the door-shaped plate 2, a positioning plate 17 is arranged in the positioning groove 23, the positioning plate 17 is designed into a plate-shaped structure with an L-shaped notch, in order to enable the positioning plate 17 to be better attached to the outer surface of the spinous processes, a central axis vertical line of a vertebral arch is convenient to be positioned so as to adjust the door-shaped plate 2 to be parallel to, half of the reference needle 20 is inserted into the spinous process, the rear end of the reference needle 20 passes through the needle groove 19 of the convex plate 14 and is inserted into the reference hole of the T-shaped fixture block 15, so that the base 1 can be conveniently installed on or detached from the spinous process, the bottom side wall of the gate-shaped plate 2 is provided with a fixing hole, a fixing needle 18 is arranged in the fixing hole, the fixing needle 18 passes through the fixing hole to temporarily nail the base 1 on the spinous process, and the position of the base 1 is prevented from moving in the operation process;
the three-dimensional positioning component 4 comprises a sagittal slide bar 3 arranged in a sagittal sleeve 16, a transverse slide bar 5 arranged above the sagittal slide bar 3, a transverse sleeve 6 sleeved on the transverse slide bar 5, a longitudinal slide bar 7 arranged on the transverse sleeve 6, and a longitudinal sleeve 8 sleeved on the longitudinal slide bar 7, wherein the top end of the sagittal slide bar 3 is vertically provided with a connecting rod vertically connected with the middle part of the transverse slide bar 5, the transverse sleeve 6 and the vertical sleeve 16 are both provided with rectangular chutes capable of passing through the connecting rod, so that the position adjusting range of the angle adjusting component 10 is effectively increased, the sagittal sleeve 16, the transverse sleeve 6 and the longitudinal sleeve 8 are provided with positioning components, the positioning components comprise positioning chutes arranged on the sagittal sleeve 16, the transverse sleeve 6 and the longitudinal sleeve 8, and positioning bolts penetrating through the positioning chutes and connected with the sagittal slide bar 3, the transverse slide bar 5 and the longitudinal slide bar 7, the sagittal slide bar 3, the transverse slide bar 5 and the longitudinal slide bar 7 respectively slide on the sagittal sleeve 16, the transverse sleeve 6 and the longitudinal sleeve 8 to adjust the position of the angle adjusting component 10, and the position of the angle adjusting component 10 is fixed by a positioning component, so that the angle adjusting component 10 is aligned to a nail feeding point, the transverse arc sleeve 8 is arranged below the longitudinal sleeve 8, and the transverse arc sleeve 8 is used for being connected with the three-dimensional distance adjusting component 4 in a sliding way;
the angle adjusting component 10 comprises a transverse arc scale rod 11 arranged in a transverse arc sleeve 9 and a guide block 12 arranged at one end of the transverse arc scale rod 11, the transverse arc scale rod 12 slides in an inner arc shape and an outer arc shape in the transverse arc sleeve 9 to adjust the nail feeding direction, a locking component is arranged on the transverse arc sleeve 9 and comprises a locking threaded hole and a locking stud arranged in the threaded hole, a guide hole is formed in the guide block 12 in a penetrating mode, a guide sleeve 13 is arranged in the guide hole, the aim is to increase the guide distance to enable the guide to be more accurate, and the locking component is arranged on the guide block 12 and used for locking the guide sleeve 13 in the guide hole.
As shown in fig. 6, the vertebrae are composed of transverse processes 25, vertebral bodies 26, superior articular processes 27, vertebral foramen 28, pedicles 29 and spinous processes 30, and pedicle access screws are implanted into adjacent vertebrae to fix the upper and lower vertebrae when the vertebrae are damaged. Before use, marking the position of a nail feeding point on the vertebral arch plate, and marking the vertical lines of the central axis of the vertebral arch pedicle on the two sides of the spinous process 30 by using a measuring tool; when the device is used, the benchmark needle 20 is firstly drilled forwards at the center of the spinous process 30 in a way of being vertical to the central axis of the pedicle of vertebral arch, the internal inclination angle between the benchmark needle 20 and the central axis of the pedicle of vertebral arch channel is measured and calculated on preoperative CT, the rear end of the benchmark needle 20 is inserted into the benchmark hole of the T-shaped fixture block 15 through the needle groove of the convex plate 14, the positioning plate 17 is inserted into the positioning groove 23 of the gate-shaped plate 2, and the positioning plate 17 is parallel to the central axis of the pedicle of vertebral arch, so that the gate-shaped plate 2 is parallel to the transverse plane of the pedicle of vertebral arch, the influence of the pitching inclination angle on the nail feeding direction is eliminated, and the fixing needle; the transverse arc-shaped scale rod 11 in the transverse arc-shaped sleeve 9 is adjusted according to the inward inclination angle of the reference needle 20 and the central axis of the pedicle channel, and the locking stud is screwed up to fix the transverse arc-shaped scale rod 11, so that the accurate nail feeding direction is obtained (the direction of the guide hole of the guide block 12 is the nail feeding direction); the vertical, transverse and longitudinal positions of the angle adjusting component 10 are adjusted by sliding the sagittal slide bar 3, the transverse slide bar 5 and the longitudinal slide bar 7 on the sagittal sleeve 16, the transverse sleeve 6 and the longitudinal sleeve 8 respectively, and are fixed by positioning bolts, so that the guide holes are aligned with the nail feeding points; finally, the guide sleeve 13 penetrates through a guide hole of the guide block 12 and is fixed in the guide hole by using a locking stud, and the opening device 24 penetrates through the guide sleeve 13 to open a circuit from the screw feeding point along the screw feeding direction, so that an accurate channel of the pedicle channel screw is obtained; after the screw passage of the pedicle screw is completed, the channel opener 24 is taken out from the guide sleeve 13, the fixing pin 18 on the spinous process 30 is pulled out, the base 1 is withdrawn along the tail end of the reference pin 20, the reference pin 20 on the spinous process 30 is pulled out, and finally the detached part is sterilized for the next use.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (8)

1. The utility model provides a pedicle of vertebral arch passageway screw two dimension director which characterized in that: the device comprises a base, a three-dimensional distance adjusting component arranged on the base and an angle adjusting component connected with the other end of the three-dimensional distance adjusting component in a sliding manner;
the base comprises a door-shaped plate and a sagittal sleeve arranged at the other end of the door-shaped plate, a reference needle is longitudinally arranged at the top of the door-shaped plate, and a positioning groove is vertically formed in the side wall of the door-shaped plate;
the three-dimensional distance adjusting component comprises a sagittal slide bar arranged in the sagittal sleeve, a transverse slide bar arranged above the sagittal slide bar, a transverse sleeve sleeved on the transverse slide bar, a longitudinal slide bar arranged on the transverse sleeve, and a longitudinal sleeve sleeved on the longitudinal slide bar, wherein the sagittal sleeve, the transverse sleeve and the longitudinal sleeve are provided with positioning components, and a transverse arc sleeve is arranged below the longitudinal sleeve;
the angle adjusting component comprises a transverse arc-shaped scale rod arranged in the transverse arc-shaped sleeve and a guide block arranged at one end of the transverse arc-shaped scale rod, a locking component is arranged on the transverse arc-shaped sleeve, and a guide hole is formed in the guide block in a penetrating mode.
2. A pedicle channel screw two-dimensional guide as claimed in claim 1, wherein: the top end of the door-shaped plate is provided with a clamping groove, a T-shaped clamping block is arranged in the clamping groove, a reference hole is formed in the T-shaped clamping block, and the reference needle is arranged in the reference hole.
3. A pedicle access screw two-dimensional guide as claimed in claim 1 or 2, wherein: concave grooves are formed in the inner side wall of the top of the door-shaped plate, convex plates are arranged between the concave grooves, needle grooves for reference needles to penetrate through are formed in the convex plates, fixing holes are formed in the side wall of the bottom of the door-shaped plate, and fixing needles are arranged in the fixing holes.
4. A pedicle channel screw two-dimensional guide as claimed in claim 1, wherein: and a positioning plate is arranged in the positioning groove and is designed into a plate-shaped structure with an L-shaped notch.
5. A pedicle channel screw two-dimensional guide as claimed in claim 1, wherein: the positioning component comprises positioning sliding grooves formed in the sagittal sleeve, the transverse sleeve and the longitudinal sleeve and positioning bolts penetrating through the positioning sliding grooves and connected with the sagittal sliding rod, the transverse sliding rod and the longitudinal sliding rod through threads.
6. A pedicle channel screw two-dimensional guide as claimed in claim 1, wherein: the vector is to the perpendicular connecting rod that sets up in slide bar top and be connected perpendicularly in the middle part of the horizontal slide bar, all sets up the rectangle spout that can pass the connecting rod on horizontal sleeve pipe and the vertical sleeve pipe.
7. A pedicle channel screw two-dimensional guide as claimed in claim 1, wherein: a guide sleeve is arranged in a guide hole of the guide block, and a locking component is arranged on the guide block.
8. A pedicle access screw two-dimensional guide as claimed in claim 1 or 7, wherein: the locking member includes a locking threaded bore and a locking stud disposed within the threaded bore.
CN202010808741.8A 2020-08-12 2020-08-12 Two-dimensional guider for pedicle channel screw Pending CN111772766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010808741.8A CN111772766A (en) 2020-08-12 2020-08-12 Two-dimensional guider for pedicle channel screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010808741.8A CN111772766A (en) 2020-08-12 2020-08-12 Two-dimensional guider for pedicle channel screw

Publications (1)

Publication Number Publication Date
CN111772766A true CN111772766A (en) 2020-10-16

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Application Number Title Priority Date Filing Date
CN202010808741.8A Pending CN111772766A (en) 2020-08-12 2020-08-12 Two-dimensional guider for pedicle channel screw

Country Status (1)

Country Link
CN (1) CN111772766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114027963A (en) * 2021-12-13 2022-02-11 郑州大学第一附属医院 Positioning point-based sacroiliac joint screw positioning auxiliary structure and implanting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114027963A (en) * 2021-12-13 2022-02-11 郑州大学第一附属医院 Positioning point-based sacroiliac joint screw positioning auxiliary structure and implanting method
CN114027963B (en) * 2021-12-13 2024-04-30 郑州大学第一附属医院 Positioning auxiliary structure and placement method for sacroiliac joint screw based on positioning point

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