CN211834665U - Assembly type spinal column strong orthopedic fixing device - Google Patents

Abstract

The embodiment of the utility model discloses powerful orthopedic fixing device of matched stack formula backbone, including pedicle of vertebral arch screw group and cross-linking piece, wherein, squeeze into a set of pedicle of vertebral arch screw group respectively in the both sides of human single vertebra to by two pedicle of vertebral arch screw groups of cross-linking piece transverse connection, pedicle of vertebral arch screw group is including connective bar, connective bar casing, first block, bulb nail casing, bulb nail and second block, connective bar casing and connective bar form a set of fixedly, bulb nail casing form a set of fixedly, and two sets of fixed knot construct through cross-linking piece lug connection. The utility model discloses an at first squeeze into the bulb nail respectively in the both sides of human single vertebra, two bulb nails on the horizontal piece of reuse on the single vertebra link together, and the bulb nail on every vertebra is connected with the connective bar at last to can reset single vertebra earlier, to the regulation of vertebra internal fixation device, convenient operation when being convenient for operate.

Description

Assembly type spinal column strong orthopedic fixing device

Technical Field

The embodiment of the utility model provides a relate to the solid-state support technical field of vertebra, concretely relates to powerful orthopedic fixing device of matched stack formula backbone.

Background

At present, after human vertebras are deformed due to fracture, pathological changes and the like, a common method is to install an internal vertebral fixator at a vertebral deformation part through an operation to perform orthopedic treatment and reduction on the vertebras, so as to help the vertebras recover functions or delay the deterioration of diseases. The spine is an indispensable part for supporting a human body, and the spine is composed of a plurality of serially connected spine joints, and if two adjacent spine joints are broken or dislocated, the human body cannot walk, so that the plurality of spine joints need to be connected into a whole.

Existing intravertebral fixation systems include pedicle screws, connecting rods, and transverse connectors. In the operation process, firstly, the pedicle screws are screwed into two sides of a vertebral body, then the connecting rods are fixed with the pedicle screws, and the transverse connector is arranged between the two connecting rods after the two sides are installed. However, the spinal internal fixation system is fixedly connected in the operation process, the operation difficulty is high, the pedicle screw is stressed on one side, nail pulling or pedicle bone damage is easy to occur, and the orthopedic and fixing curative effects are seriously influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a combination formula backbone forceful orthopedic fixing device to solve the problem that the spinal internal fixation system is not convenient to adjust in the operation process in the prior art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to a first aspect of embodiments of the present invention, a matched stack type spinal strong orthopedic fixation device comprises:

the pedicle screw group comprises a connecting rod, a connecting rod shell, a first cap, a ball stud shell, a ball stud and a second cap, wherein a pair of first U-shaped openings which are oppositely arranged are formed in the outer wall of the connecting rod shell, the connecting rod is arranged above the connecting rod shell, a rod body of the connecting rod is horizontally embedded into the connecting rod shell along the first U-shaped openings, the first cap is in threaded connection with the upper side of the connecting rod shell and is pressed on the rod body of the connecting rod for fixing the connecting rod shell and the connecting rod, the ball stud shell is arranged on one side of the connecting rod shell, a pair of second U-shaped openings which are oppositely arranged are formed in the outer wall of the ball stud shell, the ball stud is vertically arranged below the ball stud shell, the head ball of the ball stud is hinged in the bottom of the ball stud shell, the second cap is in threaded connection with the upper side of the ball stud shell, wherein, a group of pedicle screw groups are respectively driven into two sides of a single vertebra of a human body;

the connecting rod shell is arranged in the ball head nail shell along a second U-shaped opening, the second cover cap is pressed on the end portion of the transverse connecting piece and used for fixing the connecting rod shell on one side of a single vertebra of a human body and the ball head nail shell, the transverse connecting piece comprises a long cross beam and a short cross beam, the long cross beam is used for connecting and fixing pedicle screw groups on two sides of the single vertebra of the human body, the short cross beam is used for fixing the pedicle screw groups on one side of the single vertebra of the human body, and the long cross beam and the short cross beam are used for being arranged on the vertebra of the human body in an exchange mode.

Further, the connecting rod shell is of a shell structure with an open top surface, and a first threaded hole for screwing the first cover cap into is formed in the upper half part of the connecting rod shell.

Furthermore, the ball stud shell is of a shell structure with an open top surface, a second threaded hole for screwing a second cap in is formed in the upper half part of the ball stud shell, and a first spherical hole for placing a ball stud head into the shell is formed in the bottom of the ball stud shell.

Furthermore, the ball stud housing comprises a universal structure and a swinging structure, the universal structure is formed by directly matching a first spherical hole of the ball stud housing with the head of the ball stud, and the swinging structure is formed by integrally forming a limiting straight hole for limiting the ball stud to swing along the axial direction at the bottom end of the first spherical hole of the ball stud housing.

Furthermore, a ball stud gasket is arranged between the end part of the transverse connecting piece and the head part of the ball stud, and a second spherical hole used for being matched with a ball stud ball is formed in the lower end face of the ball stud gasket and used for fixing the end part of the transverse connecting piece and the head part of the ball stud.

Furthermore, the ball stud is a hollow ball stud or a solid ball stud, wherein a bone cement side hole communicated with the inner cavity of the ball stud is formed in the outer wall of the stud body of the hollow ball stud.

Furthermore, an arched convex part with a downward opening is formed in the middle of the long cross beam and used for stably supporting the long cross beam, and a positioning convex part protruding towards the outer side is formed on the end face of one end of the short cross beam and used for positioning the connecting rod shell.

Further, be equipped with the auxiliary assembly that resets in advance on the pedicle of vertebral arch screw group, the auxiliary assembly that resets in advance includes moulding excellent casing, moulding stick, third block, locking pliers and jump ring, moulding excellent casing is the open shell structure of top surface to set up in the top of bulb nail casing, is equipped with the third U type opening that supplies moulding stick from the top to the horizontal embedding moulding excellent casing on the outer wall of moulding excellent casing, third block threaded connection is in the upside of moulding excellent casing to the pressfitting is on the excellent body of moulding stick, is used for moulding excellent casing, moulding stick and the fixed of third block, on the lower extreme outer wall of moulding excellent casing, lie in the both sides of bulb nail casing and extend downwards respectively and be formed with connecting portion, seted up the lock pin hole on the connecting portion to the position that corresponds the lock pin hole on the outer wall of bulb nail casing has seted up the lock pin groove, the locking pliers includes left handle of locking pliers, The clamp spring is of a U-shaped structure and used for replacing the lock pliers to fasten the plastic rod shell and the ball stud shell.

Further, all extend along the direction of keeping away from the exposed core on the handheld of lock pincers left side handle and lock pincers right side handle and have the bellying that is used for preventing to skid to the equal rigid coupling in the inboard of the handheld end of lock pincers left side handle and lock pincers right side handle has the spacing bellying that is used for contradicting each other, the handheld of lock pincers left side handle and lock pincers right side handle is served and is still integratively formed with the locking plate respectively, and two locking plates are the laminating state after lock pincers left side handle and lock pincers right side handle draw close to, and are formed with the lock tooth that is used for the intermeshing locking on the binding face of two locking plates.

The embodiment of the utility model provides a have following advantage: different from the traditional fixed connection structure which firstly punches pedicle screws, then respectively connects two rows of pedicle screws by using a connecting rod and finally connects the two rows of connecting rods by using a transverse connection, the embodiment of the utility model arranges the connecting rod for installing the connecting rod on a connecting rod shell, arranges a ball head screw shell for connecting a ball head screw, and fixedly connects the connecting rod shell and the ball head screw shell by the transverse connection, so that the connecting rod and the ball head screw shell are combined to form a pedicle screw group, firstly punches the ball head screw, then connects two ball head screws on a single vertebra together by using the transverse connection piece, and finally connects the ball head screws on each vertebra by using the connecting rod, thereby firstly resetting the single vertebra to be convenient for adjusting at any time, simultaneously, the connecting rod shell and the ball head screw shell in the pedicle screw group are finally fixed by screwing in a nut cap, and before fixing, all the components are movably connected, the device is characterized in that the device is connected with the power supply, namely, dynamic connection is firstly carried out, and the device is fixedly connected after being completely installed, so that a certain adjusting effect can be achieved before complete installation, the operation is convenient, and the operation difficulty of the operation is effectively reduced.

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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic overall structural diagram of a combined spinal strong orthopedic fixation device according to an embodiment of the present invention;

fig. 2 is an exploded view of a part of the structure of a combined spinal strong orthopedic fixation device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a ball stud housing of a combined spinal strong orthopedic fixation device according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a locking clamp of a combined spinal strong orthopedic fixation device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a circlip of the assembled spinal strong orthopedic fixation device according to an embodiment of the present invention.

In the figure: 1. a pedicle screw set; 11. a connecting rod; 12. a connecting rod housing; 121. a first U-shaped opening; 122. a transverse connecting hole; 123. a first threaded hole; 13. a first cap; 14. a ball stud housing; 141. a second U-shaped opening; 142. a second threaded hole; 143. a first spherical surface hole; 144. limiting straight holes; 145. a latch slot; 15. a ball stud; 151. side holes for bone cement; 16. a second cap; 2. a cross-connecting piece; 21. a long beam; 22. a short cross beam; 3. a ball stud pad; 4. a pre-reset assist assembly; 41. a shaping rod housing; 411. a third U-shaped opening; 412. a lock pin hole; 42. a shaping rod; 43. a third cap; 44. locking pliers; 441. a left handle of the locking pliers; 442. a right handle of the locking pliers; 443. a connecting shaft; 444. a locking block; 445. a protrusion portion; 446. a limiting bulge part; 447. a locking piece; 45. and a clamp spring.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the embodiment of the utility model provides a powerful orthopedic fixing device of matched stack formula backbone, including pedicle of vertebral arch screw group 1 and cross-connecting piece 2, squeeze into a set of pedicle of vertebral arch screw group 1 respectively through the both sides at human single vertebra for fixed human vertebra, and can select to be in the same place two sets of pedicle of vertebral arch screw group 1 according to patient's the condition by cross-connecting piece 2, perhaps every group pedicle of vertebral arch screw group 1 is fixed alone.

Pedicle screw group 1, pedicle screw group 1 include connective bar 11, connective bar casing 12, first block 13, bulb nail casing 14, bulb nail 15 and second block 16. The connecting rod 11 is disposed above the connecting rod housing 12 and is mainly used for connecting pedicle screws on a plurality of vertebrae, the connecting rod housing 12 has a housing structure with an open top surface (refer to fig. 2), and a pair of first U-shaped openings 121 disposed opposite to each other is disposed on an outer wall of the connecting rod housing 12, so that a rod body of the connecting rod 11 is horizontally embedded in the connecting rod housing 12 along the first U-shaped openings 121. The first threaded hole 123 for screwing the first cap 13 is formed in the upper half part of the connecting rod shell 12, the first cap 13 is in threaded connection with the first threaded hole 123 of the connecting rod shell 12 and is pressed on the rod body of the connecting rod 11 in a pressing mode, the first cap 13 is enabled to extrude the connecting rod 11 downwards through threaded screwing, and therefore the connecting rod shell 12 and the connecting rod 11 are fixedly connected.

Referring to fig. 3, the ball stud housing 14 is a housing structure with an open top and is disposed on one side of the connecting rod housing 12, a first spherical hole 143 is formed in the bottom of the ball stud housing 14 for inserting the head of the ball stud 15 into the housing, the ball stud 15 is vertically disposed below the ball stud housing 14, and the ball of the head of the ball stud 15 is hinged in the bottom of the ball stud housing 14 for adjusting the angle of the ball stud 15 before fixing the components, wherein the ball stud housing 14 includes a universal structure and a swing structure, the universal structure is formed by directly matching the first spherical hole 143 of the ball stud housing 14 and the head of the ball stud 15, and the swing structure is formed by integrally forming a limiting straight hole 144 (refer to fig. 3) at the bottom end of the first spherical hole 143 of the ball stud housing 14 for limiting the swing of the ball stud 15 along the axial direction. A pair of second U-shaped openings 141 arranged oppositely is formed on the outer wall of the ball stud housing 14, a second threaded hole 142 for screwing the second cap 16 is formed in the upper half part of the ball stud housing 14, and the second cap 16 is screwed on the upper side of the ball stud housing 14, so that the second cap 16 is screwed and fixed in the ball stud housing 14 through threads. Preferably, the ball stud 15 is a hollow ball stud or a solid ball stud, wherein a bone cement side hole 151 communicating with the inner cavity of the ball stud 15 is formed in the outer wall of the stud body of the hollow ball stud, so that stable placement of the pedicle screw on the spine of a patient with severe osteoporosis can be ensured. Because the mode is fixed through the screw-in of the second cap 16, before the fixation, all the components are movably connected, namely, the dynamic connection is firstly carried out, and the components are fixedly connected after the complete installation, thereby having a certain adjusting function before the complete installation, being convenient for operation and effectively reducing the operation difficulty of the operation.

The transverse connecting piece 2 is a long rod-shaped structure which is perpendicular to the connecting rod 11 in the horizontal direction, a pair of transverse connecting holes 122 which are oppositely arranged are formed in the outer wall of the connecting rod shell 12, the end part of one end of the transverse connecting piece 2 penetrates through the connecting rod shell 12 along the transverse connecting holes 122 and is arranged in the ball stud shell 14 along the second U-shaped opening 141, the second cover cap 16 is pressed on the end part of the transverse connecting piece 2 through screwing of the second cover cap 16 on the ball stud shell 14, the second cover cap 16 is used for fixing the connecting rod shell 12 and the ball stud shell 14 on one side of a single vertebra of a human body, a ball stud gasket 3 is further arranged between the end part of the transverse connecting piece 2 and the head part of the ball stud 15, and a second spherical hole used for matching with a ball stud 15 is formed in the lower end face of the ball stud gasket 3 and used for fixing the end part of the transverse connecting piece 2 and the head part of. The transverse connecting piece 2 comprises a long transverse beam 21 and a short transverse beam 22 (refer to fig. 1), the long transverse beam 21 is used for connecting and fixing pedicle screw groups 1 on two sides of a single vertebra of a human body, an arched convex part with a downward opening is formed in the middle of the long transverse beam 21, and the stress performance of the long transverse beam 21 is improved by utilizing an arched structure, so that the long transverse beam 21 is stably supported; the short beam 22 is used for fixing the pedicle screw group 1 on one side of a single vertebra of a human body, and a positioning bulge protruding outwards is formed on the end face of one end of the short beam 22 and used for positioning the connecting rod shell 12, namely, one end of the short beam 22 provided with the positioning bulge 221 penetrates through the connecting rod shell 12 along the transverse connecting hole 122 and is placed in the ball stud shell 14. The long beam 21 and the short beam 22 are arranged to be exchanged on the spine of the human body (refer to fig. 1) by using the arrangement of the long beam 21 and the short beam 22, so that the long beam 21 can be selected to fix the pedicle screw groups 1 on both sides of a single spine of the human body together according to the condition of a patient, and the short beam 22 can be selected to separately fix the pedicle screw groups 1 on both sides of a single spine of the human body.

The specific operation process is as follows:

1. firstly, placing a ball stud 15 into a spine bone through a spherical hole at the bottom of a ball stud shell 14, placing a ball stud gasket 3 into the ball stud shell 14 and positioning the ball stud gasket on a ball head of the ball stud 15, and punching two groups of ball studs 15 on the same vertebral body of a human body, wherein the two groups of ball studs 15 are respectively positioned at two sides of a single vertebra of the human body;

2. for the two groups of structures fixed together, the left end and the right end of the long beam 21 respectively penetrate through a connecting rod shell 12, and the end part of the long beam 21 is placed into the ball stud shell 14 through the second U-shaped opening 141 and is positioned on the ball stud gasket 3; for each group of independently fixed, the short beam 22 passes through a connecting rod shell 12, the end part of one end of the short beam 22 is placed in the ball stud shell 14 through the second U-shaped opening 141 and is positioned on the ball stud gasket 3, and each group of pedicle screw groups 1 on a single vertebra of a human body is respectively provided with one short beam 2;

3. screwing the second cap 16 into the ball stud housing 14, but not tightening;

4. the shaping rod shell 41 is fixed on the ball stud shell 14 through a locking pliers 44 or a clamping spring 45;

5. the shaping rod 42 is inserted into the shaping rod case 41 through the third U-shaped opening 411 to connect each vertebral body of the human body

6. The third cap 43 is screwed into the moulding rod housing 41 and tightened, and at this time, the moulding rod 42 automatically forms a certain radian;

7. pre-bending the connecting rod 11 according to the radian of the shaping rod 42;

8. placing the connecting rod 11 into the connecting rod housing 12 through the first U-shaped opening 121;

9. screwing and tightening the first cap 13 into the connector rod housing 12;

10. removing the locking pliers 44 or the snap spring 45, and removing the shaping rod shell 41, the shaping rod 42 and the third cap 43 on the shaping rod shell 41;

11. the second cap 16 on the ball stud housing 14 is tightened to complete the fixation.

The embodiment of the utility model provides a be different from traditional earlier pedicle of vertebral arch screw of beating, the reuse connective bar couples together two rows of pedicle of vertebral arch screws respectively, and the fixed connection structure who couples together two rows of connective bars is connected with the cross-linking at last, the embodiment of the utility model provides a through squeeze into bulb nail 15 respectively in the both sides of single vertebra of human body earlier, two bulb nails 15 on the single vertebra of reuse cross-linking 2 are even together, couple together bulb nail 15 on every vertebra with connective bar 11 at last to can reset to single vertebra earlier, to fixing device's regulation in the vertebra when being convenient for perform the operation, convenient operation. Meanwhile, in the pedicle screw group 1, the components in the connecting rod shell 12 and the ball stud shell 14 are fixed by screwing in the caps, and before fixation, the components are movably connected, namely, dynamic connection is firstly realized, and the components are fixedly connected after being completely installed, so that a certain adjusting and shape correcting effect can be realized before the components are completely installed.

Example 2

The difference from the embodiment 1 is that, as shown in fig. 1 and fig. 2, a pre-reduction auxiliary assembly 4 is provided on the pedicle screw set 1, and the pre-reduction auxiliary assembly 4 includes a shaping rod housing 41, a shaping rod 42, a third cap 43 and a locking clamp 44. The shaping rod shell 41 is of a shell structure with an open top surface and is arranged above the ball stud shell 14, a third U-shaped opening 411 for horizontally embedding the shaping rod 42 into the shaping rod shell 41 from top to bottom is formed in the outer wall of the shaping rod shell 41, and a third cover cap 43 is in threaded connection with the upper side of the shaping rod shell 41 and is pressed on the rod body of the shaping rod 42 for fixing the shaping rod shell 41, the shaping rod 42 and the third cover cap 43. On the outer wall of the lower end of the shaping rod housing 41, a connecting portion is formed by extending downwards at two sides of the ball stud housing 14, a locking pin hole 412 is formed on the connecting portion, a locking pin groove 145 is formed on the outer wall of the ball stud housing 14 at a position corresponding to the locking pin hole 412, the locking pliers 44 comprises a locking pliers left handle 441, a locking pliers right handle 442 and a connecting shaft 443 (refer to fig. 4), the locking pliers left handle 441 and the locking pliers right handle 442 are arranged in a crossed manner and form a pliers-shaped structure, the connecting shaft 443 is rotatably connected to the crossed point of the locking pliers left handle 441 and the locking pliers right handle 442, wherein the locking pliers left handle 441 and the locking pliers right handle 442 both comprise a holding end and a clamping end, a locking block 444 for penetrating through the locking pin hole 412 and being matched and embedded in the locking pin groove 145 is fixedly connected to the inner side of the clamping ends of the locking pliers left handle 441 and the locking pliers right handle 442, and the shaping rod housing 41 and the ball stud housing 14 form a fixed connection with a certain rotation adjustment by the, before installation connective bar 11, through the angle of adjusting moulding excellent casing 41, can reset in advance with softer moulding excellent 42, then according to reset in advance moulding excellent 42 shape with connective bar 11 preflex, reduce the continuous adjustment of operation in-process, reduced the degree of difficulty of operation. Preferably, the pre-reduction auxiliary assembly 4 further comprises a clamp spring 45 (refer to fig. 1 and 5), wherein the clamp spring 45 is of a U-shaped structure, a suitable conventional U-shaped clamp spring can be selected, a metal elastic buckle at the end of the clamp spring 45 penetrates through the lock pin hole 412 and is matched and clamped in a part of the lock pin groove 145, so that the shaping rod housing 41 and the ball stud housing 14 are fastened, and the clamp spring 45 and the lock clamp 44 are alternately used due to the smaller size of the clamp spring 45, so that the operation of the operation is facilitated.

Example 3

The difference from embodiment 2 is that, as shown in fig. 4, the bar-shaped protruding portions 445 are extended on the holding ends of the locking pliers left handle 441 and the locking pliers right handle 442 in the direction away from the holding ends, so that when a user holds the locking pliers left handle 441 and the locking pliers right handle 442, the user can play a role in positioning on one hand, and on the other hand, the user's fingers can clamp the protruding portions 445 to play a role in preventing hand slippage. The inner sides of the handheld ends of the left handle 441 and the right handle 442 of the locking pliers are fixedly connected with limiting protrusions 446 which are used for abutting against each other, the left handle 441 and the right handle 442 of the locking pliers are close to each other, and the two limiting protrusions 446 abut against each other to form limiting, so that the left handle 441 and the right handle 442 of the locking pliers are prevented from being completely combined to influence operation. Locking pieces 447 are integrally formed at the holding ends of the left handle 441 and the right handle 442 of the locking pliers respectively, the two locking pieces 447 are in a joint state after the left handle 441 and the right handle 442 of the locking pliers are closed, and locking teeth for mutual meshing and locking are formed on the joint surfaces of the two locking pieces 447.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. A modular spinal high-force orthopedic fixation device, comprising:

the pedicle screw group (1) comprises a connecting rod (11), a connecting rod shell (12), a first cover cap (13), a ball stud shell (14), a ball stud (15) and a second cover cap (16), wherein a pair of first U-shaped openings (121) which are oppositely arranged are formed in the outer wall of the connecting rod shell (12), the connecting rod (11) is arranged above the connecting rod shell (12), the rod body of the connecting rod (11) is horizontally embedded into the connecting rod shell (12) along the first U-shaped openings (121), the first cover cap (13) is in threaded connection with the upper side of the connecting rod shell (12) and is pressed on the rod body of the connecting rod (11) for fixing the connecting rod shell (12) and the connecting rod (11), the ball stud shell (14) is arranged on one side of the connecting rod shell (12), and a pair of second U-shaped openings (141) which are oppositely arranged are formed in the outer wall of the ball stud shell (14), the ball stud (15) is vertically arranged below the ball stud shell (14), a head ball of the ball stud (15) is hinged in the bottom of the ball stud shell (14), the second cover cap (16) is in threaded connection with the upper side of the ball stud shell (14), and a group of pedicle screw groups (1) are respectively driven into two sides of a single vertebra of a human body;

the transverse connecting piece (2) is arranged along a horizontal direction and perpendicular to the connecting rod (11), a pair of transverse connecting holes (122) which are oppositely arranged are formed in the outer wall of the connecting rod shell (12), the end part of the transverse connecting piece (2) penetrates through the connecting rod shell (12) along the transverse connecting holes (122) and is arranged in the ball stud shell (14) along a second U-shaped opening (141), a second cap (16) is pressed on the end part of the transverse connecting piece (2) and is used for fixing the connecting rod shell (12) and the ball stud shell (14) on one side of a single vertebra of a human body, wherein the transverse connecting piece (2) comprises a long beam (21) and a short beam (22), the long beam (21) is used for connecting and fixing pedicle screw groups (1) on two sides of the single vertebra of the human body, and the short beam (22) is used for fixing the pedicle screw groups (1) on one side of the single vertebra of the human body, and the long beam (21) and the short beam (22) are used for being arranged on the spine of the human body in an exchange way.

2. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: the connecting rod shell (12) is of a shell structure with an open top surface, and a first threaded hole (123) for screwing the first cap (13) is formed in the upper half part of the connecting rod shell (12).

3. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: the ball stud shell (14) is of a shell structure with an open top surface, a second threaded hole (142) for screwing the second cap (16) is formed in the upper half part of the ball stud shell (14), and a first spherical hole (143) for placing the head of the ball stud (15) into the shell is formed in the bottom of the ball stud shell (14).

4. A modular spinal high-force orthopedic fixation device according to claim 3, wherein: the ball stud shell (14) comprises a universal structure and a swinging structure, the universal structure is formed by directly matching a first spherical hole (143) of the ball stud shell (14) with the head of a ball stud (15), and the swinging structure is formed by integrally forming a limiting straight hole (144) used for limiting the ball stud (15) to swing along the axial direction at the bottom end of the first spherical hole (143) of the ball stud shell (14).

5. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: a ball stud gasket (3) is arranged between the end of the transverse connecting piece (2) and the head of the ball stud (15), and a second spherical hole used for being matched with a ball head of the ball stud (15) is formed in the lower end face of the ball stud gasket (3) and used for fixing the end of the transverse connecting piece (2) and the head of the ball stud (15).

6. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: the ball stud (15) is a hollow ball stud or a solid ball stud, wherein a bone cement side hole (151) communicated with the inner cavity of the ball stud (15) is formed in the outer wall of the stud body of the hollow ball stud.

7. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: the middle part of the long beam (21) is provided with an arched convex part with a downward opening for stable support of the long beam (21), and the end face of one end of the short beam (22) is provided with a positioning convex part which is convex towards the outer side and used for positioning the connecting rod shell (12).

8. A modular spinal high-force orthopedic fixation device according to claim 1, wherein: the pedicle screw group (1) is provided with a pre-resetting auxiliary component (4), the pre-resetting auxiliary component (4) comprises a shaping rod shell (41), a shaping rod (42), a third cap (43), locking pliers (44) and a clamp spring (45), the shaping rod shell (41) is of a shell structure with an open top surface and is arranged above the ball stud shell (14), the outer wall of the shaping rod shell (41) is provided with a third U-shaped opening (411) for horizontally embedding the shaping rod (42) into the shaping rod shell (41) from top to bottom, the third cap (43) is in threaded connection with the upper side of the shaping rod shell (41) and is pressed on the rod body of the shaping rod (42) for fixing the shaping rod shell (41), the shaping rod (42) and the third cap (43), the outer wall of the lower end of the rod shell (41) extends downwards to form connecting parts on two sides of the ball stud shell (14), the connecting part is provided with a locking pin hole (412), the outer wall of the ball stud shell (14) is provided with a locking pin groove (145) at a position corresponding to the locking pin hole (412), the locking pliers (44) comprises a locking pliers left handle (441), a locking pliers right handle (442) and a connecting shaft (443), the locking pliers left handle (441) and the locking pliers right handle (442) are arranged in a crossed mode and form a pliers-shaped structure, the connecting shaft (443) is rotatably connected to the crossed point of the locking pliers left handle (441) and the locking pliers right handle (442), the locking pliers left handle (441) and the locking pliers right handle (442) respectively comprise a handheld end and a clamping end, and the inner sides of the clamping ends of the locking pliers left handle (441) and the locking pliers right handle (442) are respectively and fixedly connected with a ball head locking block (444) which is used for penetrating through the locking pin hole (412) and being matched and embedded in the locking pin groove (145) for clamping the shaping rod shell (41) and the ball stud shell (14), the clamp spring (45) is of a U-shaped structure and used for replacing a locking pliers (44) to fasten the shaping rod shell (41) and the ball stud shell (14).

9. A modular spinal high-force orthopedic fixation device according to claim 8, wherein: the handheld end of the left handle (441) and the right handle (442) of the locking pliers extends along a direction away from the clamping end to form a protruding portion (445) for preventing slipping, the inner sides of the handheld ends of the left handle (441) and the right handle (442) of the locking pliers are fixedly connected with a limiting protruding portion (446) for mutual interference, the handheld ends of the left handle (441) and the right handle (442) of the locking pliers are integrally formed with locking pieces (447), the two locking pieces (447) are attached after the left handle (441) and the right handle (442) of the locking pliers are closed, and attaching faces of the two locking pieces (447) are provided with locking teeth for mutual engagement and locking.

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