CN111603229A - Multifunctional novel pedicle screw assembly - Google Patents
Multifunctional novel pedicle screw assembly Download PDFInfo
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- CN111603229A CN111603229A CN202010465561.4A CN202010465561A CN111603229A CN 111603229 A CN111603229 A CN 111603229A CN 202010465561 A CN202010465561 A CN 202010465561A CN 111603229 A CN111603229 A CN 111603229A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a multi-functional novel pedicle of vertebral arch screw subassembly, including several bulb screw, the square piece of several, connecting rod subassembly and pressure release clamp, first through-hole is seted up on square piece top, the inside sphere that is of first through-hole lower extreme, the inside screw thread of seting up of first through-hole, four sides all around of square piece are seted up the first groove that passes through of upper end open-ended, first groove and first through-hole intercommunication pass through, the bulb portion and the inside sphere of first through-hole lower extreme of bulb screw cooperate, the bulb portion upside of bulb screw is equipped with first screw thread briquetting, the bulb portion of bulb screw sets up the hexagonal hole. The connecting rod assembly can be used for fine adjustment of angles and distances between adjacent stages during screw installation or fine adjustment, can be fixed quickly after fine adjustment, can solve the problem that the angle adjustment difficulty of the adjacent stages is high due to inaccurate drilling angle, and can be used for fine adjustment after an operation according to actual conditions.
Description
Technical Field
The invention belongs to the field of medical equipment, and particularly relates to a novel multifunctional pedicle screw assembly.
Background
At present, the pedicle screw and rod fixing system used in orthopedic surgery is composed of a plurality of pedicle screws (hereinafter referred to as "screws") and a connecting rod (hereinafter referred to as "rod") for connecting the pedicle screws, the early pedicle screw and rod fixing system is manufactured according to the theory of rigid fixation and fusion called "golden law", and is characterized in that: the connecting rod is a rigid rod, although each pedicle screw is distinguished by a single-axis screw and a universal screw, the whole pedicle screw rod system and the implanted pathological vertebral body are fixed into a whole without relative movement at the tail section of the operation, namely after the screw plug locks the connecting rod; however, as the academic world continues to develop, people invent a phenomenon that: when each centrum after the operation, if can keep tiny relative activity, then more be favorable to reducing the possible damage that adjacent segmental stress concentration caused, be favorable to its recovery, current pedicle of vertebral arch screw subassembly is mostly fixed mounting, and the connective bar need bend in advance, and the installation back is improper still need take off to bend again if the curvature, and the operation degree of difficulty is big, is unfavorable for the installation, and can only disposable, is difficult to retrieve and recycles.
Disclosure of Invention
The invention provides a novel multifunctional pedicle screw assembly, which is used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a multifunctional novel pedicle screw assembly comprises a plurality of ball screws, a plurality of square blocks, a connecting rod assembly and a pressure relief clamp, wherein a first through hole is formed in the top end of each square block, the interior of the lower end of each first through hole is spherical, threads are formed in the interior of each first through hole, first through grooves with openings at the upper ends are formed in the front side, the rear side, the left side and the right side of each square block, the first through grooves are communicated with the first through holes, the ball head portions of the ball screws are matched with the spheres in the interior of the lower ends of the first through holes, first threaded press blocks are arranged on the upper sides of the ball head portions of the ball screws and are in threaded connection with the threads in the first through holes; the connecting rod assembly comprises a plurality of rod bodies with rectangular sections, two second through holes which are parallel to each other and distributed up and down are arranged in each rod body, piston rods are arranged at two ends of each second through hole in a matched mode, third through holes are arranged at positions, corresponding to the second through holes, of the top and the bottom in the middle of each rod body, spherical plugs are arranged at the inner ends of the third through holes, the spherical plugs are fixedly connected with one sides, far away from the third through holes, of the inner portions of the third through holes through springs, the inner ends of the third through holes are sealed by the spherical plugs due to the elasticity of the springs, baffles are arranged at two sides of the inner ends of the third through holes, outer rings of the baffles are fixedly connected with the inner walls of the third through holes in a sealed mode, fourth through holes are arranged in the middles of the baffles, sealing plates are arranged at the inner ends of the fourth through holes, the inner sides of the sealing plates are fixedly connected with the corresponding spherical, the hinge sub-part is rotationally connected with the hinge main part at the outer end of the adjacent piston rod; the pressure relief clamp comprises a C-shaped rod and two ejector pins, the two ejector pins are fixedly arranged on the inner sides of two end parts of the C-shaped rod respectively, the two ejector pins are arranged oppositely, and the C-shaped rod is made of elastic materials; the body of rod passes two relative first grooves that pass on one of them square piece, is equipped with second screw thread briquetting in the first through-hole upper end, and second screw thread briquetting and first through-hole screw-thread fit, hexagonal hole are all seted up with first screw thread briquetting to second screw thread briquetting, and cross recess is all seted up with first screw thread briquetting top in second screw thread briquetting bottom, and first groove bottom that passes is all seted up the second and passes through the groove.
According to the novel multifunctional pedicle screw assembly, the rod body is fixedly provided with the two limiting rings, and the distance between the two limiting rings is equal to the width of the square block.
According to the multifunctional novel pedicle screw assembly, the hinged female part is a spherical shell, the hinged male part is a sphere, and the sphere can rotate in the spherical shell.
According to the multifunctional novel pedicle screw assembly, the hinged female part is a cylindrical shell, the hinged male part is a cylinder, the cylinder can rotate along the axis of the cylinder in the cylindrical shell, and the axis of the cylinder is horizontal.
According to the multifunctional novel pedicle screw assembly, the inner end of the third through hole is provided with the spherical groove, one side of the spherical plug, facing the third through hole, is coated with the rubber layer, and the part of the spherical plug, coated with the rubber layer, is matched with the corresponding spherical groove.
According to the multifunctional novel pedicle screw assembly, the first sealing ring is installed at the inner end of the piston column, the second sealing ring is fixedly installed in the inner end of the fourth through hole, and the second sealing ring is attached to the corresponding sealing plate.
The invention has the advantages that: the invention is assembled as shown in figure 1, firstly, a ball head screw passes through a first through hole to enable the ball head part to be matched with a ball shape in the lower end of the first through hole, a first thread pressing block is arranged on the upper side of the ball head part of the ball head screw to connect the ball head screw with a square block, a rod body is pressed in two opposite first through grooves of the square block through a second thread pressing block, a third through hole is ensured to be positioned in the middle of the square block at the moment, the rod body of the connecting rod component can have various quantity specifications, a proper connecting rod component is selected according to the requirement of an actual operation, after the assembly is finished, two thimbles of a pressure relief clamp simultaneously penetrate into the two third through holes, two ends of the pressure relief clamp respectively extend into through an upper cross groove and a lower cross groove, the pressure relief clamp is pinched, the thimbles push the corresponding ball plug to move, the sealing plate moves along with, at the moment, the third through hole and the fourth through hole are opened simultaneously, then the distance and the included angle between two adjacent rod bodies are adjusted through a medical tool, the piston rod can move in the corresponding first through hole during adjustment, the hinged sub-part rotates for a certain angle in the corresponding hinged parent part, the pressure relief clamp spherical plug and the sealing plate reset after adjustment is well released, the space between the inner end of the piston rod and the baffle is guaranteed to be constant, the extending length of the piston rod can be locked, two piston rods extend out from one end of each rod body, the included angle between the two adjacent rod bodies is kept stable under the matching of the two groups of hinged sub-parts and the hinged parent part (as shown in figure 9), the curvature of the whole connecting rod assembly can be adjusted according to the included angle between the multiple rod bodies, the curvature of the well-adjusted connecting rod assembly can be buffered within a certain small angle, and the length of an air column between the inner end of the piston rod and the baffle can be reduced within a certain range under the external force The change, this design guarantees that this subassembly wholly has certain buffering effect under receiving external force, make not rigid connection between the adjacent pedicle of vertebral arch screw, reduce the stress concentration of adjacent segment better, reduce the emergence that adjacent segment degenerated, can be at the screw installation or carry out the fine setting of angle between the adjacent stage and distance through above-mentioned design, can fix fast after the fine setting, can compensate the inaccurate and big problem of the angular adjustment degree of difficulty of the adjacent stage that causes of drilling angle, can finely tune according to actual conditions after the operation process, and the connection connective bar subassembly of this device can be dismantled the back and wash repetitious usage through the disinfection, and the material cost is reduced, and waste is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of the spherical view of the A-directed hinge sub-assembly of FIG. 1; FIG. 3 is an enlarged view of the cylindrical view of the A-direction hinge sub of FIG. 1; FIG. 4 is an enlarged view of a portion I of FIG. 1; FIG. 5 is a partial enlarged view of section II of FIG. 1; FIG. 6 is a partial enlarged view of section III of FIG. 2; FIG. 7 is a partial enlarged view of the portion IV of FIG. 3; FIG. 8 is a schematic view of a pressure relief clip; FIG. 9 is a schematic view of a cross-groove configuration; fig. 10 is a view showing a state of use after the angle of the adjacent stick bodies is adjusted.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A multifunctional novel pedicle screw assembly is shown in the figure and comprises a plurality of ball head screws 1, a plurality of square blocks 2, a connecting rod assembly and a pressure relief clamp, wherein a first through hole 3 is formed in the top end of each square block, the inside of the lower end of each first through hole 3 is spherical, threads are formed in each first through hole 3, first through grooves 4 with openings at the upper ends are formed in the front side, the rear side, the left side and the right side of each square block 2, the first through grooves 4 are communicated with the first through holes 3, the ball head portions of the ball head screws 1 are matched with the spheres in the lower ends of the first through holes, first thread pressing blocks 5 are arranged on the upper sides of the ball head portions of the ball head screws 1, the first thread pressing blocks 5 are in threaded connection with the inner threads of; the connecting rod assembly comprises a plurality of rod bodies 6 with rectangular sections, two second through holes 7 which are parallel to each other and distributed up and down are arranged in each rod body 6, two ends of each second through hole 7 are matched with and provided with piston rods 8, third through holes 9 are arranged at the positions, corresponding to the second through holes 7, of the top and the bottom in the middle of each rod body 6, the inner ends of the third through holes 9 are provided with spherical plugs 10, the spherical plugs 10 are fixedly connected with one sides, far away from the third through holes 9, in the third through holes, through springs 11, the elastic force of the springs 11 enables the spherical plugs 10 to seal the inner ends of the third through holes 9, two sides of the inner ends of the third through holes 9 are provided with baffle plates 12, the outer rings of the baffle plates 12 are fixedly connected with the inner walls of the third through holes 9 in a sealing manner, fourth through holes 13 are arranged in the middles of the baffle plates 12, the inner ends of the fourth through holes 13 are provided, the outer end of the piston rod 8 positioned on the right side is fixedly provided with a hinge female member 15, the outer end of the piston rod 8 positioned on the left side is fixedly provided with a hinge sub-member 16, and the hinge sub-member 16 is rotatably connected with the hinge female member 15 at the outer end of the adjacent piston rod 8; the pressure relief clamp comprises a C-shaped rod 17 and two ejector pins 18, the two ejector pins 18 are respectively and fixedly installed on the inner sides of two end parts of the C-shaped rod 17, the two ejector pins 18 are oppositely arranged, and the C-shaped rod 17 is made of elastic materials; the rod body 6 penetrates through two opposite first through grooves 4 on one square block 2, a second threaded pressing block 19 is arranged in the upper end of the first through hole 3, the second threaded pressing block 19 is in threaded fit with the first through hole 3, the second threaded pressing block 19 and the first threaded pressing block are both provided with a hexagonal hole, the bottom of the second threaded pressing block and the top of the first threaded pressing block are both provided with a cross-shaped groove 20, and the bottom of each first through groove is provided with a second through groove 21. When the invention is used, the invention is assembled as shown in figure 1, firstly, a ball head screw 1 passes through a first through hole 3 to ensure that the ball head part is matched with a ball shape in the lower end of the first through hole, a first thread pressing block 5 is arranged on the upper side of the ball head part of the ball head screw 1 to connect the ball head screw with a square block, a rod body is pressed in two opposite first through grooves 4 of the square block through a second thread pressing block, at the moment, a third through hole 9 is ensured to be positioned in the middle position of the square block, the number of the rod bodies of the connecting rod components can be in various number specifications, the proper connecting rod components are selected according to the actual operation requirements, after the assembly is finished, two thimbles 18 of a pressure relief clamp simultaneously penetrate into two third through holes 9, two ends of the pressure relief clamp respectively extend into through an upper cross groove and a lower cross groove, the pressure relief clamp is pinched, the thimbles 18 push the corresponding ball-shaped plugs to, at the moment, the third through hole 9 and the fourth through hole 13 are opened simultaneously, then the distance and the included angle between two adjacent rod bodies are adjusted through a medical tool, the piston rod can move in the corresponding first through hole 3 during adjustment, the hinged sub-component 16 rotates for a certain angle in the corresponding hinged main component, the pressure relief clamp spherical plug and the sealing plate reset after adjustment is released, the space between the inner end of the piston rod and the baffle plate 12 is ensured to be constant, the extending length of the piston rod can be locked, because two piston rods extend out of one end of each rod body, the included angle between two adjacent rod bodies is kept stable under the matching of the two groups of hinged sub-components 16 and the hinged main component (as shown in figure 9), the curvature of the whole connecting rod assembly can be adjusted according to the curvature of the vertebral arch, and the curvature of the connecting rod assembly after adjustment can realize buffering within a certain small angle, the length of the air column between the inner end of the piston rod and the baffle 12 can be changed in a small range under external force, the design ensures that the whole assembly has a certain buffering effect under the external force, the adjacent pedicle screws are not rigidly connected, the stress concentration of the adjacent sections is better reduced, the occurrence of degeneration of the adjacent sections is reduced, the angle and the distance between the adjacent sections can be finely adjusted in the screw installation or the screw installation process through the design, the fine adjustment can be rapidly fixed after the fine adjustment, the problem of high difficulty in angle adjustment of the adjacent sections caused by inaccurate drilling angle can be solved, the fine adjustment can be performed according to the actual condition after the operation process, the connecting rod assembly of the device can be disassembled and used for multiple times through disinfection and cleaning, the material cost is reduced, and the waste is reduced.
Specifically, as shown in the figure, two limiting rings 22 are fixedly mounted on the rod body 6, and the distance between the two limiting rings 22 is equal to the width of the square block. When installing the body of rod 6 with square piece cooperation, two spacing rings 22 are located the first groove 4 outer ends that pass through that the direction is fast, can be with the fixed of the body of rod 6 position of going on square piece, avoid the body of rod to remove by oneself for square piece, do not guarantee the assembly stability of this device.
Specifically, as shown in the drawings, the hinge female member 15 of the present embodiment is a spherical housing, and the hinge female member 16 is a sphere, and the sphere can rotate in the spherical housing. The design enables the two connected rod bodies to realize multi-angle adjustment, and can be applied to special conditions of multi-direction bending of the connecting rod assembly.
Further, as shown in the drawings, the hinge female member 15 of the present embodiment is a cylindrical housing, and the hinge female member 16 is a cylinder, and the cylinder is rotatable along its axis in the cylindrical housing, and the axis of the cylinder is horizontal. This design makes the angle between the two adjacent body of rod only can be in vertical plane angle regulation, can fix the vertebra more stably at the correct curvature after the angle locking, and this design can guarantee that the connective bar subassembly can maintain certain angle, can not be crooked by oneself, and structural stability is higher.
Furthermore, as shown in the figure, a spherical groove is formed at the inner end of the third through hole 9 in the embodiment, a rubber layer 23 is coated on one side of the spherical plug facing the third through hole 9, and the rubber layer coated part of the spherical plug is matched with the corresponding spherical groove. This design can improve the effect of the closure of the third through-hole.
Furthermore, as shown in the drawings, the inner end of the piston column in this embodiment is provided with a first sealing ring, the inner end of the fourth through hole 13 is fixedly provided with a second sealing ring, and the second sealing ring is attached to the corresponding sealing plate 14. Through the design, the air tightness of the assembly can be improved, and the stability of the structure is ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A multi-functional novel pedicle screw subassembly, its characterized in that: the ball head screw comprises a plurality of ball head screws (1), a plurality of square blocks (2), a connecting rod assembly and a pressure relief clamp, wherein a first through hole (3) is formed in the top end of each square block, the inner part of the lower end of each first through hole (3) is spherical, threads are formed in each first through hole (3), first through grooves (4) with openings at the upper ends are formed in the front side, the rear side, the left side and the right side of each square block (2), the first through grooves (4) are communicated with the first through holes (3), the ball head parts of the ball head screws (1) are matched with the spheres in the lower ends of the first through holes, a first thread pressing block (5) is arranged on the upper side of the ball head parts of the ball head screws (1), the first thread pressing block (5) is in threaded connection with the inner threads of the; the connecting rod assembly comprises a plurality of rod bodies (6) with rectangular sections, two second through holes (7) which are parallel to each other and distributed up and down are formed in each rod body (6), piston rods (8) are installed at two ends of each second through hole (7) in a matched mode, third through holes (9) are formed in positions, corresponding to the second through holes (7), of the top and the bottom in the middle of each rod body (6), spherical plugs (10) are arranged at the inner ends of the third through holes (9), the spherical plugs (10) are fixedly connected with one sides, far away from the third through holes (9), of the inner portions of the third through holes (9) through springs (11), the elastic force of the springs (11) enables the spherical plugs (10) to seal the inner ends of the third through holes (9), baffle plates (12) are arranged on two sides of the inner ends of the third through holes (9), outer rings of the baffle plates (12) are fixedly connected with the inner walls of the third through holes (9) in a sealed mode, fourth through holes, the inner side of each sealing plate (14) is fixedly connected with the corresponding spherical plug (10) through a connecting rod, the inner end of the corresponding fourth through hole (13) can be sealed by the sealing plates (14), the outer end of the piston rod (8) on the right side is fixedly provided with a hinged female part (15), the outer end of the piston rod (8) on the left side is fixedly provided with a hinged sub-part (16), and the hinged sub-part (16) is rotatably connected with the hinged female part (15) on the outer end of the adjacent piston rod (8); the pressure relief clamp comprises a C-shaped rod (17) and two ejector pins (18), the two ejector pins (18) are fixedly installed on the inner sides of two end parts of the C-shaped rod (17) respectively, the two ejector pins (18) are arranged oppositely, and the C-shaped rod (17) is made of elastic materials; the rod body (6) penetrates through two opposite first through grooves (4) on one square block (2), a second threaded pressing block (19) is arranged in the upper end of the first through hole (3), the second threaded pressing block (19) is in threaded fit with the first through hole (3), the second threaded pressing block (19) and the first threaded pressing block are both provided with a hexagonal hole, the bottom of the second threaded pressing block and the top of the first threaded pressing block are both provided with a cross groove (20), and the first through grooves are both provided with second through grooves (21).
2. The multifunctional novel pedicle screw assembly according to claim 1, wherein: the utility model discloses a square piece of rod body, the body of rod (6) on two spacing rings of fixed mounting (22), two spacing rings (22) interval equal square piece's width.
3. The multifunctional novel pedicle screw assembly according to claim 1, wherein: the hinge female part (15) is a spherical shell, the hinge sub-part (16) is a sphere, and the sphere can rotate in the spherical shell.
4. The multifunctional novel pedicle screw assembly according to claim 1, wherein: the hinge female part (15) is a cylindrical shell, the hinge sub-part (16) is a cylinder, the cylinder can rotate along the axis of the cylinder in the cylindrical shell, and the axis of the cylinder is horizontal.
5. The multifunctional novel pedicle screw assembly according to claim 1, wherein: the inner end of the third through hole (9) is provided with a spherical groove, one side of the spherical plug, facing the third through hole (9), is coated with a rubber layer (23), and the part of the spherical plug, coated with the rubber layer, is matched with the corresponding spherical groove.
6. The multifunctional novel pedicle screw assembly according to claim 1, wherein: the inner end of the piston column is provided with a first sealing ring, the inner end of the fourth through hole (13) is fixedly provided with a second sealing ring, and the second sealing ring is attached to the corresponding sealing plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465561.4A CN111603229B (en) | 2020-05-28 | 2020-05-28 | Multifunctional pedicle screw assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465561.4A CN111603229B (en) | 2020-05-28 | 2020-05-28 | Multifunctional pedicle screw assembly |
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| CN111603229A true CN111603229A (en) | 2020-09-01 |
| CN111603229B CN111603229B (en) | 2021-04-23 |
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| CN202010465561.4A Expired - Fee Related CN111603229B (en) | 2020-05-28 | 2020-05-28 | Multifunctional pedicle screw assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114376707A (en) * | 2021-12-27 | 2022-04-22 | 芜湖锐进医疗设备有限公司 | Handheld medical pedicle screw driving-in drill structure |
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| US20130096627A1 (en) * | 2006-01-26 | 2013-04-18 | Depuy International Ltd | System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery |
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| CN110022782A (en) * | 2016-10-26 | 2019-07-16 | 保罗·C·麦卡菲 | Stretching tool for spinal operation |
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| CN109549676A (en) * | 2019-01-22 | 2019-04-02 | 山东省肿瘤防治研究院（山东省肿瘤医院） | A kind of Cardiac surgeon's air-inflated rib retractor |
| CN110604610A (en) * | 2019-09-26 | 2019-12-24 | 赣州市南康区东山仲易骨科医院有限公司 | Orthopedics sacculus equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114376707A (en) * | 2021-12-27 | 2022-04-22 | 芜湖锐进医疗设备有限公司 | Handheld medical pedicle screw driving-in drill structure |
| CN114376707B (en) * | 2021-12-27 | 2024-01-12 | 芜湖锐进医疗设备有限公司 | Hand-held medical pedicle screw driving drill structure |
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| CN111603229B (en) | 2021-04-23 |
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