Connector

Abstract

The utility model discloses a connector which comprises a first connecting block and a second connecting block used for being fixed on a vertebra, the first connecting block is used for installing a first connecting rod, and the second connecting block is used for installing a second connecting rod. Wherein a movable rod used for pressing down and abutting against the second connecting rod is installed in the first connecting block, and a ball head is arranged at one end of the movable rod. A ball head sleeve connected to the ball head in a sleeving mode is installed in the second connecting block, and the position of the first connecting rod and the angle of the ball head are adjusted by rotating the ball head sleeve. The ball head sleeve is rotated to be screwed and fixed into the first connecting block, and the ball head sleeve abuts against the first connecting rod, so that the position of the first connecting rod is fixed, meanwhile, the ball head abuts against the ball head sleeve for angle fixing, and angle deviation and / or axial displacement between the first connecting block and the first connecting rod are / is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, specifically, relate to a connector. BACKGROUND

[0002] Spinal internal fixation technology is commonly used for treating spinal fracture, slippage, tumor and other diseases. Spinal internal fixation technology is an important means in the field of spinal surgery, and the core goal of the connector as a key component is to restore the stability and normal arrangement of the spine by implanting metal instruments (such as pedicle screws, connecting rods, etc.). In surgery, the connector is used to connect the pedicle screw and the connecting rod to ensure the stability and reliability of the fixation system.

[0003] The existing connector is applied to spinal surgery, and due to the structural limitation, the cervical vertebra and the lumbar vertebra cannot move, or the cervical vertebra and the occipital bone cannot move, which limits the activity behavior and the activity angle of the patient. Therefore, in order to solve the technical problem of the activity angle of the connector while ensuring the stability and reliability of the connector, a connector is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the technical problems of the application angle range and the structural reliability of the connector in the prior art, and thus proposes a connector.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connector, comprising a first connecting block and a second connecting block, the first connecting block is used for installing a first connecting rod, the second connecting block is used for installing a second connecting rod, and the second connecting block is used for fixing on a vertebra, wherein the first connecting block is provided with a movable rod for pressing and tightening the second connecting rod, one end of the movable rod is provided with a ball head, wherein the second connecting block is provided with a ball head sleeve sleeved on the ball head, rotating the ball head sleeve is used for adjusting the position of the first connecting rod and the angle of the ball head, and the ball head sleeve can also lock the ball head.

[0006] Preferably, one end of the ball head sleeve is provided with a fixed end, and the fixed end is screwed into the first connecting block by rotating the ball head sleeve. In this embodiment, the ball head inside the ball head sleeve can be adjusted or fixed in the ball head sleeve by setting the ball head sleeve.

[0007] Preferably, the movable rod is provided with a third pressing block for pressing and fixing the second connecting rod, wherein the third pressing block and the movable rod are in a split structure, and the third pressing block is arranged between the movable rod and the second connecting rod; the upper end of the second connecting block is provided with a third through hole, and a second pressing block is arranged in the third through hole; when the second pressing block is rotated clockwise, the second pressing block drives the movable rod to move towards the second connecting rod, and the movable rod drives the third pressing block to press and fix the second connecting rod; when the second pressing block is rotated counterclockwise, the second pressing block moves away from the movable rod, and thus the position of the second connecting rod in the second connecting block is adjustable.

[0008] Preferably, the third pressing block is in a columnar structure, and the outer surface of the third pressing block is provided with a second protruding part; the inner wall of the third through hole is provided with a second annular groove, and the second protruding part is arranged in the second annular groove to axially slide in the second annular groove.

[0009] Preferably, the inside of the ball head sleeve is provided with a first pressing block, and the outer surface of the first pressing block is provided with a first protruding part; the inside of the ball head sleeve is provided with a first annular groove, and the first annular groove is arranged at the fixed end of the ball head sleeve; the first annular groove is used for arranging the first protruding part; the ball head of the movable rod is used for pressing the first pressing block, the ball head sleeve is rotated to drive the ball head to press the first pressing block, the first pressing block is pressed and fixed to the first connecting rod, and the ball head is in a pressing and fixing state, so that the ball head and the ball head sleeve are fixed at a specified angle.

[0010] Preferably, the outer surface of the ball head sleeve is provided with a flat surface, so that the ball head sleeve is easily rotated circumferentially; the number of flat surfaces on the outer surface of the ball head sleeve is at least one, and the number of flat surfaces is increased to facilitate the rotation of the ball head sleeve.

[0011] Preferably, the second connecting block is further provided with a fourth through hole, and the opening of the fourth through hole is in a rectangular, waist-shaped or half-waist-shaped structure; the fourth through hole is used for arranging the movable rod and moving the movable rod in the fourth through hole, so that the movable rod can press and fix the second connecting rod.

[0012] Beneficial effects: the application is provided with an angle-adjustable function, that is, the first connecting rod or the second connecting rod can be adjusted in the radial direction of the movable rod, through the arrangement of the movable rod and the ball head sleeve arranged at one end of the movable rod between the first connecting block and the second connecting block; meanwhile, the movable rod is arranged in the ball head and the ball head sleeve, so that the angle-adjustable range of the first connecting rod or the second connecting rod is increased, the tightness of the ball head is adjusted by rotating the ball head sleeve, the activity reliability and firmness of the first connecting rod and the second connecting rod are significantly improved due to the spherical connection of the ball head. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1A perspective view of the connector according to the present application;

[0014] Figure 2 A plan view of the connector according to the present application;

[0015] Figure 3 A perspective view of the connector according to the present application; Figure 2 A sectional view along B-B of the connector according to the present application;

[0016] Figure 4 An enlarged view of C of the connector according to the present application; Figure 3

[0017] A perspective view of the connector according to the present application; Figure 5

[0018] A perspective view of the connector according to the present application; Figure 6

[0019] An elevation view of the connector according to the present application; Figure 7

[0020] A sectional view along A-A of the connector according to the present application; Figure 8 Figure 7 An enlarged view of D of the connector according to the present application.

[0021] Figure 9 Figure 8 Legend:

[0022] 1. first connecting rod; 2. first connecting block; 201. first through hole; 202. second through hole; 3. ball head sleeve; 31. movable rod; 311. ball head; 32. first top block; 321. first protruding portion; 33. fixed end; 330. first recess; 4. second connecting block; 401. third through hole; 402. fourth through hole; 404. second recess; 5. second top block; 6. second connecting rod; 7. third top block; 71. second protruding portion. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] ​​In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore cannot be understood as a limitation on the utility model; the term "first", "second", "third" is only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise expressly provided and limited, the term "installation", "connection", "connection" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0026] With reference to Figures 1-9 The utility model provides a kind of connector, including first connecting block 2 and second connecting block 4, the first connecting block 2 is used to install first connecting rod 1, the second connecting block 4 is used to install second connecting rod 6, and second connecting block 4 is used to be fixed on vertebra;

[0027] Wherein first connecting block 2 is installed with movable rod 31 for pressing down and tightening second connecting rod 6, one end of movable rod 31 is provided with ball head 311;Wherein second connecting block 4 is installed with ball head sleeve 3 that is sleeved on ball head 311, rotate ball head sleeve 3 for adjusting the angle of first connecting rod 1 position and ball head 311.

[0028] The connector in this application is used in spinal surgery. It is enhanced by providing a first connecting rod 1 or a second connecting rod 6 with a rotatable angle. The connector has an adjustable angle function by setting a movable rod 31 between the first connecting block 2 and the second connecting block 4 and a ball head sleeve 3 installed at one end of the movable rod 31. That is, the first connecting rod 1 or the second connecting rod 6 can be adjusted radially along the movable rod 31. Simultaneously, the movable rod 31 is rotated via the ball head 311 and the ball head sleeve 3, increasing the adjustable angle range of the first connecting rod 1 or the second connecting rod 6. The tightness of the ball head 311 can be adjusted by rotating the ball head sleeve 3. Because the ball head 311 uses a spherical connection, the reliability and stability of the movement of the first connecting rod 1 and the second connecting rod 6 are significantly improved. In this embodiment, the movable rod 31 is made omnidirectionally adjustable by setting a ball head sleeve 3. One end of the ball head sleeve 3 is provided with a fixed end 33. By rotating the ball head sleeve 3, the fixed end 33 is screwed into and fixed inside the first connecting block 2, and the ball head sleeve 3 abuts against the first connecting rod 1. Thus, the position of the first connecting rod 1 is fixed, and the ball head 311 abuts against the ball head sleeve 3 to fix the angle, preventing angular offset and / or axial displacement between the first connecting block 2 and the first connecting rod 1. When the ball head sleeve 3 moves away from the first connecting rod 1, the position of the first connecting rod 1 inserted into the first connecting block 2 can be adjusted; at the same time, the angle of the ball head 311 can be rotated and adjusted. The movable rod 31 is pressed down to press against the second connecting rod 6, preventing angular offset and / or axial displacement between the second connecting rod 6 and the second connecting block 4. Therefore, the connector of this application has both an adjustable angle function and achieves position fixation of the first connecting rod 1 and the second connecting rod 6. This application does not limit the diameter of the first connecting rod 1 and the second connecting rod 6. The operator can replace the first connecting rod 1 and the second connecting rod 6 with different diameters according to the usage scenario. The first connecting rod 1 is used to be installed on the occipital bone or lumbar vertebra, and the second connecting rod 6 is installed on the cervical vertebra. This application fixes the second connecting block 4 to the vertebra by installing universal screws on the second connecting block 4.

[0029] As a further improved embodiment, a third top block 7 is installed on the movable rod 31, wherein the third top block 7 and the movable rod 31 are separate structures, so that the movable rod 31 can rotate radially in the second connecting block 4;

[0030] The third top block 7 is disposed between the movable rod 31 and the second connecting rod 6, and the third top block 7 is used to press and fix the second connecting rod 6.

[0031] The upper end of the second connecting block 4 is provided with a third through hole 401, and a second top block 5 is installed in the third through hole 401. When the second top block 5 is rotated clockwise, the second top block 5 moves axially and drives the movable rod 31 to move towards the second connecting rod 6, and at the same time, the movable rod 31 drives the third top block 7 to move towards the second connecting rod 6, and the third top block 7 is tightly pressed against the second connecting rod 6, so that the second connecting rod 6 is fixed by pressing the movable rod 31. Conversely, when the second top block 5 is rotated counterclockwise, the second top block 5 moves away from the movable rod 31, so that the position of the second connecting rod 6 in the second connecting block 4 is adjustable. In the embodiment, the third top block 7 and the second connecting block 4 are slidably arranged with each other, so as to ensure the stability of the movement of the third top block 7.

[0032] As a further improved embodiment, the third top block 7 is in a columnar structure, and the outer surface of the third top block 7 is provided with a second protruding portion 71; the inner wall of the third through hole 401 is provided with a second recess 404 in an annular structure, and the second recess 404 is used for placing the second protruding portion 71, so that the second protruding portion 71 moves axially in the second recess 404, and at the same time, the axial movement distance of the third top block 7 is limited.

[0033] As a further improved embodiment, the lower end surface of the third top block 7 is provided with an arc-shaped opening. By providing the arc-shaped opening, the contact surface between the third top block 7 and the second connecting rod 6 is increased, so that the fixing effect of the third top block 7 on the second connecting rod 6 is improved. In another embodiment of the present embodiment, the second top block 5 arranged in the second connecting block 4 is provided with a flat surface, and the flat surface of the second top block 5 faces the third top block 7, so that the third top block 7 is conveniently pressed, and at the same time, the phenomenon of angular deflection of the second connecting rod 6 is avoided; wherein the third top block 7 does not need to be provided with an arc-shaped opening to fix the second connecting rod 6.

[0034] As a further improved embodiment, the inside of the ball head sleeve 3 is installed with a first top block 32, the outer surface of the first top block 32 is provided with a first protruding portion 321, and the first protruding portion 321 and the first top block 32 are integrally connected, and the first protruding portion 321 is used for limiting the axial movement distance of the first top block 32; wherein the inside of the ball head sleeve 3 is provided with a first recess 330 in an annular structure, and the first recess 330 is located at the fixed end 33 of the ball head sleeve 3; the first recess 330 is used for placing the first protruding portion 321, and the first protruding portion 321 moves smoothly along the axial direction thereof. In the embodiment, the first top block 32 is used for tightly pressing the first connecting rod 1.

[0035] As a further improved embodiment, the first connecting block 2 is provided with a first through hole 201 for placing the first connecting rod 1, and the first connecting block 2 is further provided with a second through hole 202, the axial direction of the second through hole 202 being perpendicular to the axial direction of the first through hole 201, and the second through hole 202 only penetrating the side wall of the first connecting block 2, the second through hole 202 being further used for installing the ball head sleeve 3.

[0036] The ball head 311 of the movable rod 31 is used for pressing the first top block 32, the ball head sleeve 3 is rotated to drive the ball head 311 to press the first top block 32, and the first top block 32 is pressed to fix the first connecting rod 1; at the same time, the ball head 311 is in a pressing and fixing state, so that the ball head 311 and the ball head sleeve 3 are fixed at a specified angle, so that the second connecting block 4 is angularly adjustable along the radial direction of the movable rod 31 at a specified angle, which is equivalent to fixing the universal movable rod 31 in a specified direction, improving the applicable angle of the connector, and further improving the application range of the connector. At the same time, the ball head 311 and the ball head sleeve 3 are designed through a spherical surface, and the movement stability of the ball head 311 and the ball head sleeve 3 is high through adjustment of the tightness; and the firmness and reliability between the ball head 311 and the ball head sleeve 3 are improved in the pressing state.

[0037] As a further improved embodiment, the two ends of the first top block 32 are respectively provided with arc-shaped openings with different shapes, which are used to improve the fixing effect of the ball head 311 and the first connecting rod 1.

[0038] As a further improved embodiment, the outer surface of the ball head sleeve 3 is provided with a flat surface, so that the ball head sleeve 3 is easy to rotate circumferentially, and thus the fixed end 33 of the ball head sleeve 3 is easy to be screwed into the first connecting block 2. In this embodiment, the number of flat surfaces on the outer surface of the ball head sleeve 3 is at least one. In this embodiment, the number of flat surfaces is increased to facilitate the rotation of the ball head sleeve 3.

[0039] As a further improved embodiment, the second connecting block 4 is further provided with a fourth through hole 402, and the opening of the fourth through hole 402 is rectangular, waist-shaped or half-waist-shaped; wherein the fourth through hole 402 is used for placing the movable rod 31, and the movable rod 31 moves in the fourth through hole 402, so that the movable rod 31 moves to the second connecting rod 6 and presses and fixes the second connecting rod 6.

[0040] As a further improved embodiment, the second connecting block 4 is further used for installing a universal screw, one end of the universal screw penetrating out of the third through hole 401. In this embodiment, the third through hole 401 is a straight cylindrical structure or a trapezoidal hole structure, and the selection of the third through hole 401 can be selected according to the application environment.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A connector characterized by: It includes a first connecting block (2) and a second connecting block (4) for fixing to the vertebra. The first connecting block (2) is used to install the first connecting rod (1), and the second connecting block (4) is used to install the second connecting rod (6). The first connecting block (2) is equipped with a movable rod (31) for pressing down and tightening the second connecting rod (6). One end of the movable rod (31) is provided with a ball head (311). The second connecting block (4) is equipped with a ball head sleeve (3) that is fitted onto the ball head (311). Rotating the ball head sleeve (3) is used to adjust the position of the first connecting rod (1) and the angle of the ball head (311).

2. The connector according to claim 1, characterized in that: One end of the ball head sleeve (3) is provided with a fixed end (33). By rotating the ball head sleeve (3), the fixed end (33) is screwed into the first connecting block (2).

3. The connector according to claim 2, characterized in that: The movable rod (31) is equipped with a third top block (7) for pressing and fixing the second connecting rod (6). The third top block (7) and the movable rod (31) are separate structures. The third top block (7) is located between the movable rod (31) and the second connecting rod (6). The upper end of the second connecting block (4) is provided with a third through hole (401). The second top block (5) is installed in the third through hole (401). By rotating the second top block (5) clockwise, it pushes the movable rod (31) to move toward the second connecting rod (6). At the same time, the movable rod (31) drives the third top block (7) to press and fix the second connecting rod (6).

4. The connector according to claim 3, characterized in that: The third top block (7) has a columnar structure, and the outer surface of the third top block (7) is provided with a second protrusion (71); the inner wall of the third through hole (401) is provided with a second groove (404) with an annular structure, and the second groove (404) is used to place the second protrusion (71) so that the second protrusion (71) slides axially in the second groove (404).

5. The connector according to claim 4, characterized in that: The lower end face of the third top block (7) is provided with an arc-shaped opening.

6. The connector according to claim 4, characterized in that: The second top block (5) inserted inside the second connecting block (4) has a flat surface, and the flat surface of the second top block (5) is set opposite to the third top block (7).

7. The connector according to claim 2, characterized in that: The ball head sleeve (3) is equipped with a first top block (32) inside, and the outer surface of the first top block (32) is provided with a first protrusion (321); the ball head sleeve (3) is provided with a first groove (330) in an annular structure inside, and the first groove (330) is located at the fixed end (33) of the ball head sleeve (3); the first groove (330) is used to place the first protrusion (321); the ball head (311) of the movable rod (31) is used to press against the first top block (32). By rotating the ball head sleeve (3), the ball head (311) is driven to press against the first top block (32), and the first top block (32) presses against and fixes the first connecting rod (1), while the ball head (311) is in a pressed and fixed state, so that the ball head (311) and the ball head sleeve (3) are fixed at a specified angle.

8. The connector according to claim 1, characterized in that: The outer surface of the ball head sleeve (3) is provided with a flat cut surface, so that the ball head sleeve (3) can rotate circumferentially.

9. The connector according to claim 1, characterized in that: The second connecting block (4) is also provided with a fourth through hole (402), the opening of which is rectangular, waist-shaped or semi-waist-shaped; wherein the fourth through hole (402) is used to place the movable rod (31) and to allow the movable rod (31) to move in the fourth through hole (402).

10. The connector according to claim 2, characterized in that: The second connecting block (4) is also used to install a universal screw, one end of which protrudes from the third through hole (401).

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