CN114903580A - Vertebral body tether device for scoliosis minimally invasive surgery and using method thereof - Google Patents
Vertebral body tether device for scoliosis minimally invasive surgery and using method thereof Download PDFInfo
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- CN114903580A CN114903580A CN202210497516.6A CN202210497516A CN114903580A CN 114903580 A CN114903580 A CN 114903580A CN 202210497516 A CN202210497516 A CN 202210497516A CN 114903580 A CN114903580 A CN 114903580A
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- Prior art keywords
- vertebral body
- mounting
- fixing
- scoliosis
- tether device
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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
-
- 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
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
Abstract
The invention discloses a vertebral body tether device for scoliosis minimally invasive surgery and a using method thereof, and relates to the technical field of orthopedic medical instruments, the vertebral body tether device comprises vertebral body screws, an elastic rope and a sleeve, wherein the top of each vertebral body screw is provided with a mounting groove with openings at two sides, the elastic rope is clamped in the mounting grooves of a plurality of vertebral body screws, the sleeve is wrapped on the periphery of the elastic rope between adjacent vertebral body screws, and a fixing cap for fixing the elastic rope is arranged in each mounting groove; the vertebral body screw comprises the installation part and the implantation part which are detachably assembled, when the vertebral body screw is actually used, the implantation part is implanted into the front of the side of a vertebral column, and then the installation part is assembled with the installation part; the efficient assembly and use of the vertebral body tether device are realized through the assembly system.
Description
Technical Field
The invention relates to the technical field of orthopedic medical instruments, in particular to vertebral body tether equipment for scoliosis minimally invasive surgery and a using method thereof.
Background
The vertebral body tether device is suitable for patients with immature skeletal development and need surgical treatment to obtain and maintain progressive characteristic scoliosis correction, and the main Cobb angle determined by radiological imaging is 30-65 degrees, the bone structure size is enough to accommodate screw fixation, and the patients have poor treatment effect of the brace and/or cannot tolerate the condition of the brace wearing. In clinical use, the vertebral body tether device should not be implanted in patients with: 1. any systemic infection, local infection or skin damage at the surgical site; 2. performing spinal surgery on a part needing treatment; 3. known bone mass differences are defined as t-values of-1.5 or lower; 4. bone maturation; 5. any other potential medical or surgical conditions that may interfere with spinal surgery, such as blood clotting disorders, allergies to implanted materials, and patient reluctance or inability to comply with post-operative care instructions.
The publication number (CN 106388921A) discloses a tethering rope instrument for scoliosis correction, which includes a vertebral body screw and an elastic rope, wherein the vertebral body screw includes an implant nail body and a fixing cap matched with the implant nail body to fix the elastic rope. The tether rope instrument only needs one operation, so that the pain and the operation risk caused by multiple operations are avoided, and the cost and the treatment time of a patient are saved; the growth and development potential of the spine can be reserved to the maximum extent, the scoliosis is ensured to be automatically corrected along with the growth of the spine so as to adapt to the elongation and development of teenagers, and the correction effect is good. However, the following technical problems are found: the periphery of the centrum screw cannot be fixedly sealed so as to prevent dust from entering the mounting groove, the automatic assembly of the elastic rope, the fixing cap and other structures cannot be realized in the using process, and the mounting efficiency is reduced.
Disclosure of Invention
The invention aims to provide a vertebral body tether device for scoliosis minimally invasive surgery and a using method thereof, and aims to solve the technical problems that in the prior art, the periphery of a vertebral body screw cannot be fixed and sealed to prevent dust from entering a mounting groove, automatic assembly of structures such as an elastic rope and a fixing cap cannot be realized in the using process, and the mounting efficiency is reduced.
The purpose of the invention can be realized by the following technical scheme:
a vertebral body tether device for scoliosis minimally invasive surgery comprises vertebral body screws, an elastic rope and a sleeve, wherein mounting grooves with openings at two sides are formed in the tops of the vertebral body screws, the elastic rope is clamped in the mounting grooves of a plurality of vertebral body screws, the sleeve is wrapped on the periphery of the elastic rope between adjacent vertebral body screws, fixing caps for fixing the elastic rope are arranged in the mounting grooves, and sealing caps are fixed on the periphery of the tops of the vertebral body screws;
the centrum screw includes the installation department of top and the portion of implanting of below, installation department and the portion of implanting demountable assembly, and the installation department includes the entering portion of top and is located the internal thread portion of entering portion below in the mounting groove, and the bottom center of mounting groove is equipped with and screws into the chamber.
Furthermore, the periphery of the implantation part is provided with an external thread part, the top of the implantation part is provided with an insertion part, the bottom of the installation part is provided with an insertion cavity which is inserted and matched with the insertion part, the inner wall of the insertion cavity is provided with continuous wear-resistant protrusions, and the top wall of the insertion cavity is provided with a plurality of compression springs.
Furthermore, the fixing cap comprises an upper spiral part and a lower nailing part, the spiral part is matched with the internal thread part, the nailing part is matched with the nailing cavity, the nailing part penetrates through the elastic rope and then extends into the nailing cavity, and a hexagonal knob is arranged at the top of the spiral part; the top of the spiral part does not extend out of the inlet part, and the bottom of the nailing cavity is provided with a cushion pad.
Further, the sealing cap includes lid board and embedded plate, and the both sides of lid board are equipped with the extension board that extends down, and the lid closes the board and arranges the top of installation department in, and embedded plate block covers in the both sides of entering portion, and the extension board covers in the both sides of mounting groove, and the top that the lid closed the board is equipped with adjust knob, and the periphery of embedded board is equipped with many wear-resisting sand grips.
A method of using a vertebral body tether device for minimally invasive scoliosis surgery, comprising the steps of:
s1, implanting 4-8 implant parts of vertebral body screws into the front of the side of the vertebral column according to the scoliosis condition of the scoliosis correction patient;
s2, fixing and conveying the installation part, embedding the elastic rope, installing the fixing cap and installing the sealing cap through the assembling system of the vertebral body tether equipment;
and S3, inserting the insertion part and the insertion cavity to be matched and assembled to obtain the vertebral body screw, and completing the assembly of the vertebral body tether device.
Further, the specific processes of fixing and conveying the installation part and embedding the elastic rope are as follows: the mounting parts of the vertebral body screws are clamped and fixed by the fixing clamps, and the plurality of mounting parts are driven to move by the plurality of fixing clamps in the process of driving the conveying belt around the belt roller; the driving motor drives the ball screw to rotate, so that the elastic ropes are sleeved into the mechanism to horizontally move along the axial direction of the ball screw, and the elastic ropes are sleeved into mounting grooves in the mounting portions in the lifting process of the mechanism.
Further, the specific process of installing the fixing cap is as follows: after the elastic rope is established to the cover on a plurality of installation departments, the second grip slipper carries out the centre gripping to the hexagonal knob periphery of locking nut, and second cylinder driving motor installation room and second grip slipper move down for in the locking nut got into the mounting groove, cooperation electric motor drive second grip slipper was rotatory with the locking nut, made the portion of pegging into impale the elastic rope and got into the chamber of pegging into, and the screw portion was screwed with the cooperation of internal thread portion.
Further, the specific process of installing the sealing cap is as follows: after the locking cap is screwed into the mounting part, the third clamping seat clamps the periphery of the adjusting knob on the sealing cap, the third cylinder drives the connecting shaft and the third clamping seat to move downwards, so that the embedded plate is clamped into the entering part, and the extending plate covers the two sides of the mounting groove.
Furthermore, the assembling system of the vertebral body tether device comprises brackets and a conveying belt, wherein the two brackets are arranged on two sides of the conveying belt, the conveying belt is arranged around the periphery of the plurality of belt rollers, and a plurality of fixing clamps for fixing the mounting part are arranged on the outer surface of the conveying belt; the top of support is equipped with ball screw, and ball screw's one end is connected with driving motor, is equipped with a plurality of elastic cords on the ball screw and goes into the mechanism, is connected with locking cap installation mechanism and sealing cap installation mechanism through the dead lever on one of them support.
Further, the elastic rope sleeving mechanism comprises a screw rod seat and a first air cylinder, a threaded hole meshed with a ball screw is formed in the screw rod seat, the bottom of the screw rod seat is connected with the first air cylinder through a connecting rod, the bottom of the first air cylinder is connected with a first clamping seat, an elastic rope and a sleeve are clamped on a plurality of first clamping seats from one side to the other side, and the position of the elastic rope corresponds to the mounting groove.
The invention has the following beneficial effects:
1. the vertebral body tether equipment for the minimally invasive scoliosis surgery adopts a plurality of vertebral body screws to fix and correct the front part of the side of the vertebral column of a scoliosis correction patient, connects the plurality of vertebral body screws through the elastic ropes and the sleeve, provides elasticity for the adaptive correction of each vertebra, avoids the fracture of the vertebral body screws due to stress, and does not influence the normal growth and development of the vertebral column; centrum screw includes demountable assembly's installation department and implantation portion, can implant the portion earlier and implant back of backbone side the place ahead during in-service use, again with installation department and assembly, the installation of the convenient locking cap of mounting groove, sealed cap plays the protection supporting role to the peripheral fixed seal in top of centrum screw, avoids centrum screw fracture, avoids the dust to get into in the mounting groove and arouse the spinal infection simultaneously.
2. The external screw thread portion makes things convenient for centrum screw at the precession in backbone side the place ahead, screw-out, and the portion of inserting inserts the chamber and inserts the fastening that realizes installation department and portion of implanting after the cooperation, and wear-resisting arch has increased the frictional force that inserts between chamber and the portion of inserting, and compression spring provides certain elasticity for the portion of inserting, and the vibration that produces is alleviated to the extraction of the portion of conveniently inserting.
3. The using method of the vertebral body tether equipment comprises the steps of completing fixing and conveying of an installation part, embedding of an elastic rope, installation of a fixing cap and installation of a sealing cap through an assembling system, implanting an implantation part into the front of the side of a vertebral column, inserting and matching an insertion part and an insertion cavity to obtain a vertebral body screw, and achieving efficient assembling and using of the vertebral body tether equipment.
4. The elastic rope sleeving mechanism is arranged, when the first clamping seats are driven by the first cylinders to move downwards, the elastic ropes sleeved with the sleeves move up and down, and the elastic ropes are sleeved on the mounting parts; the first clamping seat is rotatably connected with the bottom of the first cylinder through a rotating shaft, so that the first clamping seat can rotate around the bottom of the first cylinder, and the elastic rope and the sleeve can be flexibly clamped.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vertebral body tether device for minimally invasive scoliosis surgery according to an embodiment of the present invention;
FIG. 2 is a side view of a vertebral body screw according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a vertebral body screw according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 3;
FIG. 5 is a schematic structural diagram of a locking cap according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a sealing cap according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an assembled system of a vertebral body tether device for minimally invasive scoliosis surgery according to an embodiment of the present invention;
FIG. 8 is a side view of an elastic cord lock-in mechanism in an embodiment of the present invention;
FIG. 9 is a schematic view of a locking cap mounting mechanism clamping a locking cap according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a sealing cap mounting mechanism clamping a sealing cap according to an embodiment of the present invention.
In the figure: 10. a vertebral body screw; 11. mounting grooves; 12. an installation part; 13. an implant part; 14. an entry section; 15. an internal thread portion; 16. nailing into the cavity; 17. an external threaded portion; 18. an insertion portion; 19. an insertion cavity; 20. an elastic cord; 21. wear-resistant protrusions; 22. a compression spring; 30. a sleeve; 40. a fixed cap; 41. a spiral portion; 42. a nailing section; 43. a hexagonal knob; 44. a cushion pad; 50. a sealing cap; 51. covering the plywood; 52. a built-in plate; 53. an extension plate; 54. adjusting a knob; 55. wear-resistant convex strips; 60. a support; 61. a ball screw; 62. a drive motor; 63. a fixing rod; 64. a rolling bearing seat; 65. a screw base; 66. a first cylinder; 67. a threaded hole; 68. a connecting rod; 69. a first clamping seat; 70. a conveyor belt; 71. a belt roller; 72. fixing the clamp; 73. a rotating shaft; 74. a first mounting plate; 75. a second cylinder; 76. a motor installation chamber; 77. an electric motor; 78. a second clamping seat; 79. a second mounting plate; 80. a third cylinder; 81. a third clamping seat; 82. and (7) connecting the shafts.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
As shown in fig. 1 to 5, the present embodiment provides a vertebral body tether device for a scoliosis minimally invasive surgery, which includes vertebral body screws 10, an elastic cord 20, and a sleeve 30, wherein the top of each vertebral body screw 10 is provided with a mounting groove 11 with openings at two sides, the elastic cord 20 is clamped in the mounting grooves 11 of the plurality of vertebral body screws 10, the sleeve 30 wraps the periphery of the elastic cord 20 between adjacent vertebral body screws 10, a fixing cap 40 for fixing the elastic cord 20 is arranged in the mounting groove 11, and a sealing cap 50 is fixed on the periphery of the top of each vertebral body screw 10.
The vertebral body screw 10 comprises an upper mounting part 12 and a lower implantation part 13, the mounting part 12 and the implantation part 13 are detachably assembled, the mounting part 12 comprises an upper entering part 14 in a mounting groove 11 and an internal thread part 15 positioned below the entering part 14, and a nailing cavity 16 is arranged at the center of the bottom of the mounting groove 11.
According to the vertebral body tether device for the minimally invasive scoliosis surgery, a plurality of vertebral body screws 10 are adopted to fix and correct the front part of the side of the vertebral column of a scoliosis correction patient, the plurality of vertebral body screws 10 are connected through the elastic ropes 20 and the sleeve 30, elasticity is provided for the adaptive correction of each vertebra, the vertebral body screws 10 are prevented from generating stress to break, and the normal growth and development of the vertebral column are not influenced; after the vertebral body tether device is removed, the lateral curvature of the scoliotic spine can be completely restored to normal. Wherein, centrum screw 10 is including demountable assembly's installation department 12 and implantation portion 13, can implant portion 13 earlier and implant backbone side the place ahead back during the in-service use, again with installation department 12 rather than the assembly, the installation of the convenient locking cap 40 of mounting groove 11, sealing cap 50 is to the peripheral fixed seal in top of centrum screw 10, plays the protection supporting role, avoids centrum screw 10 fracture, avoids the dust to get into in the mounting groove 11 and arouse the spinal infection simultaneously.
The periphery of the implantation part 13 is provided with an external thread part 17, the top of the implantation part 13 is provided with an insertion part 18, the bottom of the installation part 12 is provided with an insertion cavity 19 which is inserted and matched with the insertion part 18, the inner wall of the insertion cavity 19 is provided with a continuous wear-resistant bulge 21, and the top wall of the insertion cavity 19 is provided with a plurality of compression springs 22. The external thread portion 17 facilitates the screw-in and screw-out of the vertebral body screw 10 in front of the side of the vertebral column, the insertion portion 18 and the insertion cavity 19 are inserted and matched to realize the fastening of the installation portion 12 and the implantation portion 13, the wear-resistant protrusion 21 increases the friction force between the insertion cavity 19 and the insertion portion 18, the compression spring 22 provides certain elasticity for the insertion portion 18, the insertion portion 18 is convenient to pull out, and the vibration generated in the insertion and extraction process of the insertion portion 18 is relieved.
Example 2
As shown in fig. 1 and 4-5, in the vertebral body tether device for minimally invasive scoliosis surgery of the present embodiment, the fixing cap 40 includes an upper spiral part 41 and a lower nail-in part 42, the spiral part 41 is adapted to the internal thread part 15, the nail-in part 42 is adapted to the nail-in cavity 16, the nail-in part 42 penetrates through the elastic cord 20 and then extends into the nail-in cavity 16, and a hexagonal knob 43 is disposed at the top of the spiral part 41. The top of the spiral 41 is positioned so as not to extend beyond the entry portion 14 and the bottom of the nailing chamber 16 is provided with a cushioning pad 44. The setting of locking cap 40 for screw portion 41 and the cooperation of internal thread portion 15 screw in and screw out in mounting groove 11, the setting of hexagonal knob 43 makes things convenient for the centre gripping rotatory, and the portion 42 that enters into the chamber 16 back blotter 44 of nailing plays the separation slow vibration effect.
As shown in fig. 1 and 6, the sealing cap 50 includes a covering plate 51 and an insertion plate 52, wherein extension plates 53 extending downward are disposed on two sides of the covering plate 51, the covering plate 51 is disposed on the top of the mounting portion 12, the insertion plate 52 is engaged with the inlet portion 14, the extension plates 53 cover two sides of the mounting groove 11, an adjusting knob 54 is disposed on the top of the covering plate 51, and a plurality of wear-resistant protruding strips 55 are disposed on the periphery of the insertion plate 52. After the embedded plate 52 is clamped into the entering part 14, the extending plate 53 covers two sides of the installation groove 11, the wear-resistant convex strips 55 increase the friction force between the embedded plate 52 and the entering part 14, and the adjusting knob 54 is convenient for clamping and lifting.
Example 3
As shown in fig. 1-8, the present embodiment provides an assembly system of a vertebral body tether apparatus for minimally invasive scoliosis surgery, which is used for accomplishing the fixed delivery of the mounting portion 12, the embedding of the elastic cord 20, the mounting of the fixing cap 40 and the mounting of the sealing cap 50 in the vertebral body tether apparatus.
Specifically, the assembly system comprises brackets 60 and a conveying belt 70, wherein the two brackets 60 are arranged on two sides of the conveying belt 70, the conveying belt 70 is arranged around the periphery of a plurality of belt rollers 71, and a plurality of fixing clamps 72 for fixing the mounting part 12 are arranged on the outer surface of the conveying belt 70. The top of the support 60 is provided with a ball screw 61, one end of the ball screw 61 is connected with a driving motor 62, the ball screw 61 is provided with a plurality of elastic rope sleeving mechanisms, and one of the supports 60 is connected with a fixing cap mounting mechanism and a sealing cap mounting mechanism through a fixing rod 63.
In the assembling system of the vertebral body tether device, the mounting parts 12 of the vertebral body screws 10 are clamped and fixed through the fixing clamps 72, and the plurality of fixing clamps 72 drive the plurality of mounting parts 12 to move in the process that the conveying belt 70 is driven around the belt roller 71; in the process that the driving motor 62 drives the ball screw 61 to rotate, the elastic rope sleeving mechanisms horizontally move along the axial direction of the ball screw 61, the elastic rope sleeving mechanisms are lifted, the elastic ropes 20 are sleeved in the mounting grooves 11 in the mounting portions 12, then the rotary mounting of the fixing caps 40 and the covering mounting of the sealing caps 50 are completed through the fixing cap mounting mechanisms and the sealing cap mounting mechanisms, the assembling system can complete the automatic efficient assembling of the mounting portions 12, the fixing caps 40 and the sealing caps 50, after the implantation portion 13 is implanted into the front of the spinal column side, the insertion portion 18 is inserted and matched with the insertion cavity 19 to obtain the vertebral body screws 10, and the assembling of the vertebral body tether device is completed.
The top of the bracket 60 is rotatably connected with the ball screw 61 through two rolling bearing seats 64, and the central axis of the ball screw 61 is parallel to the central axis of the mounting part 12. The rolling bearing seat 64 ensures the stable rotation of the ball screw 61, and the central axis of the ball screw 61 is parallel to the central axis of the mounting part 12, so that the elastic rope 20 can vertically descend to be sleeved in the mounting groove 11.
The elastic rope sleeving mechanism comprises a screw rod seat 65 and a first air cylinder 66, a threaded hole 67 meshed with the ball screw 61 is formed in the screw rod seat 65, the bottom of the screw rod seat 65 is connected with the first air cylinder 66 through a connecting rod 68, the bottom of the first air cylinder 66 is connected with a first clamping seat 69, the elastic rope 20 and the sleeve 30 are clamped on the first clamping seats 69 from one side to the other side, and the position of the elastic rope 20 corresponds to the mounting groove 11. Both sides of the first clamping seat 69 are rotatably connected with the bottom of the first cylinder 66 through a rotating shaft 73. The elastic rope inserting mechanism is arranged to move the elastic rope 20 inserted into the plurality of sleeves 30 up and down when the plurality of first air cylinders 66 drive the first clamping seats 69 to move downwards, so that the elastic rope 20 is inserted into the plurality of mounting portions 12. The first clamping seat 69 is rotatably connected with the bottom of the first cylinder 66 through a rotating shaft 73, so that the first clamping seat 69 can rotate around the bottom of the first cylinder 66, and flexible clamping of the elastic rope 20 and the sleeve 30 is realized.
As shown in fig. 1-5, 7, and 9, the locking cap mounting mechanism includes a first mounting plate 74, a second cylinder 75, and a motor mounting chamber 76, the first mounting plate 74 is sleeved on one side of the locking rod 63 away from the bracket 60, the bottom of the first mounting plate 74 is connected with the second cylinder 75, the bottom of the second cylinder 75 is connected with the motor mounting chamber 76, an electric motor 77 is mounted in the motor mounting chamber 76, a motor shaft of the electric motor 77 extends downward to be connected with a second clamping seat 78, and the second clamping seat 78 is used for clamping the periphery of the hexagonal knob 43. The arrangement of locking cap installation mechanism, after the elastic rope 20 is established to the cover on a plurality of installation departments 12, the second grip slipper 78 is peripheral to the hexagonal knob 43 of locking cap 40 and is carried out the centre gripping, and second cylinder 75 driving motor installation room 76 and second grip slipper 78 move down for locking cap 40 gets into in the mounting groove 11, cooperation electric motor 77 drive second grip slipper 78 and locking cap 40 are rotatory, make the portion of entrying 42 impale elastic rope 20 and get into the chamber 16 of entrying, spiral portion 41 screws with the cooperation of internal thread portion 15.
As shown in fig. 1, 6, 7 and 10, the sealing cap mounting mechanism includes a second mounting plate 79, a third cylinder 80 and a third clamping seat 81, the second mounting plate 79 is sleeved on one side of the fixing rod 63 close to the bracket 60, the bottom of the second mounting plate 79 is connected with the third cylinder 80, the bottom of the third cylinder 80 is connected with the third clamping seat 81 through a connecting shaft 82, and the third clamping seat 81 is used for clamping the periphery of the adjusting knob 54. When the fixing cap 40 is screwed into the mounting portion 12, the third clamping seat 81 clamps the periphery of the adjusting knob 54 on the sealing cap 50, the third cylinder 80 drives the connecting shaft 82 and the third clamping seat 81 to move downward, so that the insertion plate 52 is engaged with the entrance portion 14, and then the extension plate 53 covers both sides of the mounting groove 11.
Example 4
As shown in fig. 1-10, the present embodiment provides a method of using a vertebral body tether device for minimally invasive scoliosis surgery, comprising the steps of:
s1, implanting 4-8 implant parts 13 of the vertebral body screws 10 into the front of the side of the vertebral column according to the scoliosis condition of the scoliosis correction patient;
s2, finishing the fixing and conveying of the mounting part 12, the embedding of the elastic rope 20, the mounting of the fixing cap 40 and the mounting of the sealing cap 50 through the assembling system of the vertebral body tether equipment;
the specific processes of fixed conveying of the mounting part 12 and embedding of the elastic rope 20 are as follows: the fixing clamps 72 clamp and fix the installation parts 12 of the cone screws 10, and in the process that the conveying belt 70 is driven around the belt roller 71, the plurality of fixing clamps 72 drive the plurality of installation parts 12 to move; in the process that the driving motor 62 drives the ball screw 61 to rotate, the elastic rope sleeving mechanisms horizontally move along the axial direction of the ball screw 61, and in the process that the elastic rope sleeving mechanisms lift, the elastic ropes 20 are sleeved in the mounting grooves 11 in the mounting parts 12;
the specific process of installing the fixing cap 40 is as follows: after the elastic ropes 20 are sleeved on the installation portions 12, the second clamping seat 78 clamps the periphery of the hexagonal knob 43 of the fixing cap 40, the second cylinder 75 drives the motor installation chamber 76 and the second clamping seat 78 to move downwards, so that the fixing cap 40 enters the installation groove 11, the electric motor 77 is matched to drive the second clamping seat 78 and the fixing cap 40 to rotate, the nailing portion 42 pierces through the elastic ropes 20 to enter the nailing cavity 16, and the spiral portion 41 is matched with the internal thread portion 15 to be screwed.
The specific process of installing the sealing cap 50 is as follows: when the fixing cap 40 is screwed into the mounting portion 12, the third clamping seat 81 clamps the periphery of the adjusting knob 54 on the sealing cap 50, the third cylinder 80 drives the connecting shaft 82 and the third clamping seat 81 to move downward, so that the insertion plate 52 is engaged with the entrance portion 14, and then the extension plate 53 covers both sides of the mounting groove 11.
And S3, inserting the insertion part 18 and the insertion cavity 19 to be matched and assembled to obtain the vertebral body screw 10, and completing the assembly of the vertebral body tether device.
According to the using method of the vertebral body tether equipment, the assembling system is used for completing fixing and conveying of the installation part 12, embedding of the elastic rope 20, installation of the fixing cap 40 and installation of the sealing cap 50, after the implantation part 13 is implanted into the front of the spinal column side, the insertion part 18 and the insertion cavity 19 are inserted and matched to obtain the vertebral body screw 10, and efficient assembling and using of the vertebral body tether equipment are achieved.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A vertebral body tether device for scoliosis minimally invasive surgery comprises vertebral body screws (10), elastic ropes (20) and sleeves (30), wherein mounting grooves (11) with openings at two sides are formed in the tops of the vertebral body screws (10), the elastic ropes (20) are clamped in the mounting grooves (11) of a plurality of vertebral body screws (10), and the vertebral body tether device is characterized in that the sleeves (30) are wrapped on the peripheries of the elastic ropes (20) between adjacent vertebral body screws (10), fixing caps (40) used for fixing the elastic ropes (20) are arranged in the mounting grooves (11), and sealing caps (50) are fixed on the peripheries of the tops of the vertebral body screws (10);
the vertebral body screw (10) comprises an installation part (12) above and an implantation part (13) below, the installation part (12) and the implantation part (13) are detachably assembled, the installation part (12) comprises an inlet part (14) above the installation groove (11) and an internal thread part (15) below the inlet part (14), and a nail inlet cavity (16) is arranged at the center of the bottom of the installation groove (11).
2. Vertebral body tether device for minimally invasive scoliosis surgery according to claim 1, characterized in that the implant (13) is provided at its periphery with an external thread (17), the implant (13) is provided at its top with an insertion part (18), the mounting part (12) is provided at its bottom with an insertion cavity (19) for insertion engagement with the insertion part (18), the insertion cavity (19) is provided at its inner wall with continuous wear-resistant protrusions (21), and the insertion cavity (19) is provided at its top wall with a plurality of compression springs (22).
3. The vertebral body tether device for the minimally invasive scoliosis surgery according to claim 1, characterized in that the fixing cap (40) comprises an upper spiral part (41) and a lower nailing part (42), the spiral part (41) is matched with the internal thread part (15), the nailing part (42) is matched with the nailing cavity (16), the nailing part (42) penetrates through the elastic rope (20) and then extends into the nailing cavity (16), and the top of the spiral part (41) is provided with a hexagonal knob (43); the top of the spiral part (41) does not extend out of the inlet part (14), and the bottom of the nailing cavity (16) is provided with a buffer pad (44).
4. The vertebral body tether device for scoliosis minimally invasive surgery according to claim 1, wherein the sealing cap (50) comprises a cover plate (51) and an embedded plate (52), extension plates (53) extending downwards are arranged on two sides of the cover plate (51), the cover plate (51) is arranged at the top of the mounting portion (12), the embedded plate (52) is clamped in the inlet portion (14), the extension plates (53) cover two sides of the mounting groove (11), an adjusting knob (54) is arranged on the top of the cover plate (51), and a plurality of wear-resistant ribs (55) are arranged on the periphery of the embedded plate (52).
5. A method of using a vertebral body tether apparatus for minimally invasive scoliosis surgery, comprising the steps of:
s1, implanting 4-8 implant parts (13) of vertebral body screws (10) into the front of the side of the vertebral column according to the scoliosis condition of the scoliosis correction patient;
s2, fixing and conveying the mounting part (12), embedding the elastic rope (20), mounting the fixing cap (40) and mounting the sealing cap (50) through the assembling system of the vertebral body tether device;
and S3, inserting the insertion part (18) and the insertion cavity (19) to be matched and assembled to obtain the vertebral body screw (10), and finishing the assembly of the vertebral body tether device.
6. Use of a vertebral body tether device for minimally invasive scoliosis surgery according to claim 5, characterized in that the mounting portion (12) is fixedly transported and the elastic cord (20) is embedded by the following specific procedures: the mounting parts (12) of the vertebral body screws (10) are clamped and fixed by the fixing clamps (72), and the plurality of mounting parts (12) are driven by the plurality of fixing clamps (72) to move in the process that the conveying belt (70) is driven around the belt roller (71); in the process that the driving motor (62) drives the ball screw (61) to rotate, the elastic rope sleeving mechanisms horizontally move along the axial direction of the ball screw (61), and in the process that the elastic rope sleeving mechanisms ascend and descend, the elastic ropes (20) are sleeved in the mounting grooves (11) in the mounting portions (12).
7. Use of a vertebral body tether device for minimally invasive scoliosis surgery according to claim 5, characterized in that the fixing cap (40) is installed by the following specific procedure: after elastic ropes (20) are sleeved on the installation parts (12), the second clamping seat (78) clamps the periphery of a hexagonal knob (43) of the fixing cap (40), the second cylinder (75) drives the motor installation chamber (76) and the second clamping seat (78) to move downwards, so that the fixing cap (40) enters the installation groove (11), the second clamping seat (78) and the fixing cap (40) are driven to rotate by matching with an electric motor (77), the nailing part (42) pierces through the elastic ropes (20) and enters the nailing cavity (16), and the spiral part (41) is screwed in cooperation with the internal thread part (15).
8. Use of a vertebral body tether device for minimally invasive scoliosis surgery according to claim 5, characterized in that the sealing cap (50) is mounted by the following specific procedure: after the fixing cap (40) is screwed into the mounting part (12), the third clamping seat (81) clamps the periphery of the adjusting knob (54) on the sealing cap (50), the third air cylinder (80) drives the connecting shaft (82) and the third clamping seat (81) to move downwards, so that the embedded plate (52) is clamped into the entering part (14), and then the extending plate (53) covers the two sides of the mounting groove (11).
9. The use method of the vertebral body tether device for the minimally invasive scoliosis surgery according to claim 5, wherein the assembly system of the vertebral body tether device comprises brackets (60) and a conveying belt (70), the two brackets (60) are arranged on two sides of the conveying belt (70), the conveying belt (70) is arranged around a plurality of belt rollers (71), and a plurality of fixing clamps (72) for fixing the mounting part (12) are arranged on the outer surface of the conveying belt (70); the top of support (60) is equipped with ball screw (61), and the one end of ball screw (61) is connected with driving motor (62), is equipped with a plurality of elastic cords on ball screw (61) and sets into the mechanism, is connected with nut mounting mechanism and sealing cap mounting mechanism through dead lever (63) on one of them support (60).
10. The use method of the vertebral body tether device for the minimally invasive scoliosis surgery according to claim 5, wherein the elastic rope sheathing mechanism comprises a screw rod seat (65) and a first air cylinder (66), a threaded hole (67) engaged with the ball screw (61) is formed in the screw rod seat (65), the first air cylinder (66) is connected to the bottom of the screw rod seat (65) through a connecting rod (68), a first clamping seat (69) is connected to the bottom of the first air cylinder (66), the elastic rope (20) and the sleeve (30) are clamped on the first clamping seats (69) from one side to the other side, and the position of the elastic rope (20) corresponds to the mounting groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497516.6A CN114903580A (en) | 2022-05-09 | 2022-05-09 | Vertebral body tether device for scoliosis minimally invasive surgery and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497516.6A CN114903580A (en) | 2022-05-09 | 2022-05-09 | Vertebral body tether device for scoliosis minimally invasive surgery and using method thereof |
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| CN114903580A true CN114903580A (en) | 2022-08-16 |
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|---|---|---|---|
| CN202210497516.6A Pending CN114903580A (en) | 2022-05-09 | 2022-05-09 | Vertebral body tether device for scoliosis minimally invasive surgery and using method thereof |
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| Country | Link |
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| CN (1) | CN114903580A (en) |
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| CN117338395A (en) * | 2023-10-30 | 2024-01-05 | 中国医学科学院北京协和医院 | Vertebral system rope equipment for orthopedic minimally invasive surgery |
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