CN114948154A - Connection fixing system for operation - Google Patents

Abstract

The invention discloses a connection and fixation system for surgery, comprising a first connection part and a second connection part that are connected to each other, and a first connection part and a second connection part capable of adjusting are arranged between the first connection part and the second connection part The angle adjustment structure of the working angle, the first connecting part is provided with a locking hole, the first connecting part is locked together with the part to be connected by the first locking nail locked into the locking hole, and the second connecting part is opened There is a long hole, and the long hole is connected with a locking component which can be screwed with the internal thread structure of the tail of the pedicle screw and can press and lock the connecting rod. In the present invention, an angle adjustment structure for adjusting the working angle between the first connecting part and the second connecting part is arranged, and when used in conjunction with the pedicle screw, the bone surface or the vertebral process does not need to be polished. It can avoid the problem of spinal ligament damage, which is beneficial to improve the safety of spinal surgery.

Description

A surgical connection and fixation system

technical field

The invention relates to the technical field of medical instruments, in particular to a connection and fixation system for surgery.

Background technique

In clinical spine surgery, when using a screw-rod internal fixation system, a transverse connector is chosen for auxiliary fixation. During the fixation process, it often occurs that the working angle of the transverse connector does not match the position of the screw rod, and there is a displacement phenomenon. The operator needs to grind the bone surface or the spinal process to change the fit, and also cut off the spinal process ligament and intervertebral ligament, thereby Some of the original stability is lost.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a connection and fixation system for surgery. The working angle between the first connecting part and the second connecting part can be realized by the angle adjustment structure, so that the working angle is equal to the working angle of the second connecting part. The positions of the pedicle screw and the connecting rod are matched, and there is no need to polish the bone surface or cut off the spinal ligaments and intervertebral ligaments, so as to avoid the weakening of the original stability.

To achieve the above object, the present invention is achieved through the following technical solutions:

A connection and fixation system for operation, comprising a first connection part and a second connection part that are connected to each other, a working clip capable of adjusting the first connection part and the second connection part is arranged between the first connection part and the second connection part The angle adjustment structure of the angle, the first connecting part is provided with a locking hole, the first connecting part is locked together with the part to be connected by the first locking nail locked into the locking hole, and the second connecting part is provided with a long hole The long hole is connected with a locking component which can be screwed with the internal thread structure of the tail of the pedicle screw and can press and lock the connecting rod.

Further, the included angle adjustment structure includes a first shaft hole and a second shaft hole respectively arranged on the first connecting part and the second connecting part, the first shaft hole and the second shaft hole are coaxially and correspondingly arranged, and the first shaft hole A shaft nail is connected with the second shaft hole.

Further, the shaft nail is a plug-and-screw structure.

Further, the threaded section of the plug screw and the second shaft hole of the second connecting part are threaded together and then connected together by laser welding reinforcement.

Further, the first connecting portion is provided with a plurality of locking holes.

Further, the first connecting portion is locked together with the ridge portion by the first locking nail, and a bending hook portion for hooking the side of the ridge is formed on the first connecting portion.

Further, the locking assembly includes a screw locking head and a nut, and the screw locking head includes a first screw part adapted to the internal thread structure of the tail of the pedicle screw and a long hole that can pass through the second connecting part and screw with the nut. The second screwing parts are connected and locked together, and the end of the second screwing part is provided with a screwing part which is convenient for screwing the screwing locking head.

Further, a sliding spacer is slidably provided at the long hole of the second connecting part through the sliding limit structure formed by the side limit slot and the side limit protrusion. The second threaded portion of the sliding gasket is adapted to pass through the through hole, and the second threaded portion passes through the through hole of the sliding gasket and is then screwed together with the nut to form locking.

Further, a second locking nail is connected to the long hole of the second connecting portion, so that two adjacent ridge portions can be connected together through the first connecting portion and the second connecting portion.

The above-mentioned technical scheme has the following advantages or beneficial effects:

In the connection and fixation system for surgery according to the present invention, an angle adjustment structure for adjusting the working angle between the first connection part and the second connection part is arranged between the first connection part and the second connection part, so that the connection and fixation system can be more It is well adapted to the fixed position and angle of the pedicle screw, so that the second connecting part can be better connected with the pedicle screw. The pedicle screw has the effect of strengthening the stability, which is beneficial to improve its firmness, thereby making the screw rod fixation system more stable. In addition, the locking component on the second connecting part can be easily connected to the inner part of the pedicle screw tail. The threaded structure is screwed and has the effect of pressing and locking the connecting rod, without using the existing pedicle screw tail cap structure. In addition, the use of the connection and fixation system with adjustable working angle makes it unnecessary to polish the bone surface or cut the spinal ligament and intervertebral ligament when it is used in conjunction with the pedicle screw, so as to avoid the weakening of the original stability. Conducive to improving the safety of spinal surgery.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of a connection and fixing system according to Embodiment 1 of the present invention.

FIG. 2 is an exploded schematic diagram of the three-dimensional structure of the connection and fixing system according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of the matching structure of the connection fixing system and the nail bar fixing system according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of the use state of the connection and fixing system according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram of a use state of the connection and fixing system according to the second embodiment of the present invention.

Label description:

1. The first connecting part, 2. The second connecting part, 3. The first locking pin, 4. The second locking pin, 5. The pedicle screw, 6. The connecting rod, 7. The locking assembly, 8. The shaft pin, 11. The first shaft hole, 12, the bending hook part, 21, the long hole, 22, the second shaft hole, 71, the screw locking head, 72, the nut, 73, the sliding washer, 711, the first screw connection part, 712, the second screwing part.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Example 1

Referring to Figures 1 to 4, an embodiment of the present invention provides a connection and fixation system for surgery, including a first connection part 1 and a second connection part 2 that are connected to each other. An included angle adjustment structure capable of adjusting the working angle between the first connecting portion 1 and the second connecting portion 2 is arranged between the two connecting portions 2 , the first connecting portion 1 is provided with a locking hole, and the first connecting portion 1 is locked into The first locking nail 3 in the lock hole is locked together with the part to be connected (such as the vertebral process part), and a long hole 21 is provided on the second connecting part 2, and the long hole 21 is connected with a tail part of the pedicle screw 5. The internal thread structure is screwed and the locking assembly 7 is used to press and lock the connecting rod 6 . It can be understood that, in one of the preferred application scenarios of this embodiment, by arranging an angle adjustment structure between the first connecting part 1 and the second connecting part 2 for adjusting the working angle between the two, The connection and fixation system can better adapt to the fixed position and angle of the pedicle screw 5, so that the second connection part 2 can be better connected with the pedicle screw 5, and at the same time, through the first connection part The locking of 1 with the vertebral process can enhance the stability of the pedicle screw 5, which is beneficial to improve its firmness, thereby making the screw rod fixing system more stable. The locking component 7 can be conveniently screwed with the internal thread structure at the tail of the pedicle screw 5 and can press and lock the connecting rod 6 without using the existing pedicle screw tail cap structure. In addition, the use of the connection and fixation system with adjustable working angle makes it unnecessary to grind the bone surface or cut the spinal ligament and intervertebral ligament when it is used in conjunction with the pedicle screw 5, so as to avoid the weakening of the original stability. Conducive to improving the safety of spinal surgery.

Please refer to FIG. 1 to FIG. 4 , in a preferred embodiment, the included angle adjustment structure includes a first shaft hole 11 and a second shaft hole respectively disposed on the first connecting portion 1 and the second connecting portion 2 22. Preferably, the axis of the second shaft hole 22 is perpendicular to the length direction of the second connecting part 2, the first shaft hole 11 and the second shaft hole 22 are coaxially arranged correspondingly, and the first shaft hole 11 and the second shaft hole A shaft pin 8 is connected in 22 . In this embodiment, preferably, the shaft nail 8 is a plug-and-screw structure. Further, the threaded section of the plug screw and the second shaft hole 22 of the second connection part 2 are threaded together and then connected together by laser welding or riveting reinforcement to prevent the plug screw and the second connection part 2 in the long-term. Risk of shedding after use. In this way, the effect of adjusting the working angle between the first connecting part 1 and the second connecting part 2 can be achieved through the angle adjusting structure (as shown in FIG. 4 , after the first connecting part 1 is fixed, the second connecting part 2 relative to the first connecting part 1 has the adjustment effect of swinging and rotating up and down as shown). Therefore, during the assembling process, if the positions of the pedicle screw 5 and the connecting rod 6 do not match the included angle between the first connecting part 1 and the second connecting part 2, the working clamping can be performed through the above-mentioned angle adjustment structure. The angle is fine-tuned, so that the locking component 7 on the second connecting part 2 can be aligned with the pedicle screw 5 and the connecting rod 6, and then the locking component 7 can be precisely screwed together with the pedicle screw 5 and connected. The rod 6 forms a compressive locking action. However, those skilled in the art should understand that, in other embodiments, the shaft pin 8 may also be of other types of shaft structures, and may be a shaft pin structure with a partial threaded structure. It is not limited to the specific implementation manner disclosed in this embodiment.

Please refer to FIG. 1 to FIG. 4 , in one of the preferred embodiments, a plurality of locking holes are formed on the first connecting portion 1 . In this embodiment, preferably, the first connecting part 1 is provided with two locking holes, and the locking holes can be circular, square, rectangular or polygonal, etc., so that two first connecting parts can be locked into the first connecting part 1. The locking nails are locked together with the corresponding ridge portions. However, those skilled in the art should understand that, in other embodiments, the number of openings of the locking holes on the first connecting portion 1 is not limited to the specific implementation disclosed in this embodiment, as long as the first connecting portion 1 can be stabilized The ground can be locked together with the ridge portion. Those skilled in the art can specifically set the number and arrangement positions of the lock holes according to specific needs.

Please refer to FIGS. 1 to 4 , in one of the preferred embodiments, the first locking nail 3 is a ridge locking nail structure, and the first connecting portion 1 is locked together with the ridge portion through the first locking nail 3 , and the first connecting portion 1 is formed with a bending hook portion 12 for hooking the side of the ridge. It can be understood that, in this embodiment, the bending hook portion 12 is provided at the end of the first connecting portion 1 away from the first shaft hole 11 , so that when the first connecting portion 1 is fixed, the hook portion 12 can be bent by the bending hook portion 12 . The lateral position of the ridge portion can be hooked more firmly, thereby helping to improve the locking stability of the first connecting portion 1 and the ridge portion. In addition, the number of the bending hook portions 12 on the first connecting portion 1 is not limited to the specific implementation disclosed in this embodiment, and may be one or two or even more. The bending hook portion 12 may also be a structure such as an arc hook, a semicircle hook, or a right-angled hook.

Please refer to FIGS. 1 to 4 , in a preferred embodiment, the locking assembly 7 includes a screw locking head 71 and a nut 72 , and the screw locking head 71 includes an internal thread structure compatible with the tail of the pedicle screw 5 . The matching first screwing part 711 and the second screwing part 712 which can pass through the long hole 21 of the second connecting part 2 and are screwed and locked together with the nut 72, the end of the second screwing part 712 is provided with It is convenient to screw the screwing portion of the screwing locking head 71. Preferably, in this embodiment, the screwing portion is a hexagonal socket hole structure. However, those skilled in the art should understand that in other embodiments, the screwing portion is also It can be other types of concave hole structures or polygonal boss structures, such as a protruding hexagonal boss structure, as long as it is convenient for the matching tool to screw the screw locking head 71, and is not limited to the specific disclosed in this embodiment. implementation.

Please refer to FIGS. 1 to 4 , in one of the preferred embodiments, the long hole 21 of the second connecting portion 2 is a sliding limit structure formed by the cooperation of the side limit slot and the side limit protrusion. A sliding washer 73 is slidably provided, and a through hole is formed on the sliding washer 73 for the second threaded portion 712 of the threaded locking head 71 to fit through, and the second threaded portion 712 passes through the through hole of the sliding washer 73 It is then screwed together with the nut 72 to form locking. It can be understood that, in this embodiment, a sliding washer 73 is provided at the long hole 21 of the second connecting portion 2 , so that the second screwing portion 712 of the screwing locking head 71 can be screwed well and firmly with the nut 72 The connection and fit together are beneficial to improve the convenience and stability of the connection between the first connecting portion 2 and the pedicle screw 5 .

Embodiment 2

Please refer to FIG. 5 , the difference between this embodiment and the first embodiment is that the connection direction of the second connection part 2 and the first connection part 1 are different, and the long hole 21 of the second connection part 2 is connected with a second lock The nails 4 can connect two adjacent ridge parts together through the first connecting part 1 and the second connecting part 2 . Specifically, two second connecting parts 2 can be configured for the connection and fixing system. In this embodiment, the axis of the second shaft hole 22 on the second connecting part 2 is consistent with the length direction of the second connecting part 2 (as shown in the appendix). As shown in FIG. 5 , after the first connecting part 1 is fixed, the second connecting part 2 rotates relative to the first connecting part 1 in the axial direction for fine-tuning effect). In this way, the first locking nail 3 and the second locking nail 4 can make the first A connecting part 1 and a second connecting part 2 are respectively fixed with two adjacent ridge parts, so as to connect the two ridge parts together, which is beneficial to improve the application range of the connection and fixing system.

As mentioned above, the embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be used to implement the foregoing implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention, so those of ordinary skill in the art All other embodiments obtained without creative work fall within the protection scope of the present invention.

Claims (9)

1. An attachment and fixation system for surgery, comprising: the pedicle screw locking device comprises a first connecting portion (1) and a second connecting portion (2) which are connected with each other, an included angle adjusting structure capable of adjusting a working included angle of the first connecting portion (1) and a working included angle of the second connecting portion (2) is arranged between the first connecting portion (1) and the second connecting portion (2), a locking hole is formed in the first connecting portion (1), the first connecting portion (1) is locked into the locking hole through a first locking screw (3) and a to-be-connected portion to be locked together, a long hole (21) is formed in the second connecting portion (2), and the long hole (21) is connected with a second locking screw (4) for locking or is connected with a locking assembly (7) which can be in threaded connection with an inner thread structure at the tail of a pedicle screw (5) and can generate a compression locking effect on a connecting rod (6).

2. The surgical attachment and fixation system of claim 1, wherein: the included angle adjusting structure comprises a first shaft hole (11) and a second shaft hole (22) which are respectively arranged on the first connecting portion (1) and the second connecting portion (2), the first shaft hole (11) and the second shaft hole (22) are coaxially and correspondingly arranged, and a shaft nail (8) is connected in the first shaft hole (11) and the second shaft hole (22).

3. The surgical attachment and fixation system of claim 2, wherein: the shaft nail (8) is of a plug screw structure.

4. The surgical attachment and fixation system of claim 3, wherein: the thread section of the plug screw is in threaded fit with the second shaft hole (22) of the second connecting part (2) and then is fixedly connected together through laser welding.

5. The surgical attachment and fixation system of claim 1, wherein: the first connecting part (1) is provided with a plurality of lock holes.

6. The surgical attachment and fixation system of claim 1, wherein: the first connecting part (1) is locked with the ridge protrusion part through a first locking nail (3), and a bent claw part (12) for hooking the side edge of the ridge protrusion part is formed on the first connecting part (1).

7. The surgical attachment and fixation system of any one of claims 1 to 6, wherein: the locking assembly (7) comprises a screwing locking head (71) and a nut (72), the screwing locking head (71) comprises a first screwing part (711) matched with the internal thread structure at the tail part of the pedicle screw (5) and a second screwing part (712) which can penetrate through a long hole (21) of the second connecting part (2) and is screwed and locked with the nut (72), and a screwing part which is convenient for screwing the screwing locking head (71) is arranged at the end part of the second screwing part (712).

8. The surgical attachment and fixation system of claim 7, wherein: a sliding gasket (73) is slidably arranged at a sliding limiting structure formed by matching a side limiting clamping groove and a side limiting protrusion at a long hole (21) of the second connecting part (2), a through hole which can be matched and penetrated by a second screwing part (712) of the screwing locking head (71) is formed in the sliding gasket (73), and the second screwing part (712) is screwed with the nut (72) together to form locking after penetrating through the through hole of the sliding gasket (73).

9. The surgical attachment and fixation system of any one of claims 1 to 6, wherein: the second locking nail (4) is connected to the long hole (21) of the second connecting part (2), so that the adjacent ridge protruding parts can be connected together through the first connecting part (1) and the second connecting part (2).

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