Domino connector

Abstract

The utility model belongs to the technical field of spinal internal fixation consumables, and discloses a domino connector which comprises a connector body and a fastener, a first through hole penetrating through the connector body in the first direction is formed in the connector body, and a plurality of second through holes penetrating through the connector body in the second direction are further formed in the connector body. The first through hole and the second through hole are both used for allowing a connecting rod to penetrate through, an included angle is formed between the first direction and the second direction, and the fastener is detachably connected to the connector body and can fix the connecting rod to the connector body. By means of the arrangement, the domino connector can be connected with the connecting rods in parallel or in series, and operation is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of spinal internal fixation consumables, in particular to a domino joint. Background Art

[0002] With the aging of the population and the accidents that happen in life, osteoporosis and spinal compression fractures are very common. If they are not effectively reduced, the condition can easily worsen. In spinal fixation surgery, the domino joint is a common tool used to connect two connecting rods in parallel or in series to strengthen and fix the spine.

[0003] like Figure 1 and Figure 2 As shown, the common domino connectors on the market are divided into square domino connectors ( Figure 1 ) and straight domino connectors ( Figure 2 ), the connecting rod is fixed in the channel through the connecting piece to play the role of connection, but the current domino connector cannot meet the parallel and series requirements of the connecting rod at the same time. Moreover, the traditional domino connector needs to screw in multiple connecting pieces, which will prolong the operation time, reduce the operation efficiency and increase the operation risk; in addition, the domino connector has only one connection method, and the method of use is very single and not flexible enough. Utility Model Content

[0004] The utility model aims to provide a domino joint which can connect rods in parallel or in series and is more flexible in operation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A domino joint, characterized by comprising:

[0007] A joint body, wherein the joint body is provided with a first through hole extending through the joint body in a first direction, and the joint body is further provided with a plurality of second through holes extending through the joint body in a second direction, wherein the first through hole and the second through hole are both used for passing a connecting rod, and the first direction and the second direction are provided at an angle;

[0008] A fastener is detachably connected to the joint body and can fix the connecting rod to the joint body.

[0009] Optionally, a connection hole is opened on the joint body, and the fastener is screwed into the connection hole, so that the connection rod can be abutted against the joint body.

[0010] Optionally, a plurality of the connection holes and the fasteners are provided, the plurality of connection holes are arranged at intervals along the first direction, and the plurality of fasteners can be connected to the plurality of connection holes in a one-to-one correspondence.

[0011] Optionally, the connector body is in the form of a straight parallelepiped, the connection hole is provided on the top surface of the connector body, and the first through hole and the second through hole are provided on the side surfaces of the connector body.

[0012] Optionally, the first through hole and the second through hole are connected to each other, and the first direction is perpendicular to the second direction.

[0013] Optionally, the first through hole and the second through hole are both provided with an arc end and a straight end connected to each other, and the outer peripheral wall of the connecting rod can abut against the arc end and be clamped on the straight end.

[0014] Optionally, the connection between the arc end and the straight end is chamfered.

[0015] Optionally, the straight end is rectangular.

[0016] Optionally, the fastener is a top screw.

[0017] Beneficial effects:

[0018] The utility model provides a domino joint, which includes a joint body and a fastener. The joint body is provided with a first through hole that is set to penetrate along a first direction, and the joint body is also provided with a plurality of second through holes that are set to penetrate along a second direction. The first through hole and the second through hole are both used to penetrate a connecting rod, so that two connecting rods can pass through the first through hole in sequence to achieve series connection, or are respectively penetrated in a plurality of second through holes to achieve parallel connection of the connecting rods, thereby enriching the use of the domino joint. The fastener is detachably connected to the joint body, so that the fastener can be disassembled and installed according to actual needs, improving the flexibility of surgical operations. The fastener can fix the connecting rod to the joint body to ensure the connection strength between the connecting rod and the joint body, and it is safer to use. Through the above-mentioned arrangement, the domino joint of the present application can connect the connecting rods in parallel or in series, and the operation is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the existing domino joint Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the existing domino joint Figure 2 ;

[0021] Figure 3 It is a schematic diagram of a domino connector provided by an embodiment of the utility model;

[0022] Figure 4 It is a front view of a domino connector provided by an embodiment of the utility model;

[0023] Figure 5It is a side view of a domino connector provided by an embodiment of the utility model;

[0024] Figure 6 It is a top view of a domino connector provided by an embodiment of the utility model;

[0025] Figure 7 It is a bottom view of the domino connector provided by the embodiment of the utility model.

[0026] In the figure:

[0027] 1. Joint body; 11. First through hole; 111. Arc end; 112. Straight end; 12. Second through hole; 13. Connecting hole;

[0028] 2. Fasteners. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] like Figure 3-Figure 7 As shown, this embodiment provides a domino joint, which includes a joint body 1 and a fastener 2. The joint body 1 is provided with a first through hole 11 that is arranged to penetrate along a first direction. The joint body 1 is also provided with a plurality of second through holes 12 that are arranged to penetrate along a second direction. The first through hole 11 and the second through hole 12 are both used to pass a connecting rod, and the first direction and the second direction are arranged at an angle. The fastener 2 is detachably connected to the joint body 1 and can fix the connecting rod to the joint body 1.

[0034] In the present embodiment, the joint body 1 is provided with a first through hole 11 which is arranged to penetrate along a first direction, and the joint body 1 is also provided with a plurality of second through holes 12 which are arranged to penetrate along a second direction, and the first through hole 11 and the second through hole 12 are both used to penetrate a connecting rod, so that two connecting rods can sequentially pass through the first through hole 11 to realize series connection, or are respectively penetrated in a plurality of second through holes 12 to realize parallel connection of the connecting rods, thereby enriching the use of the domino joint. The fastener 2 is detachably connected to the joint body 1, so that the fastener 2 can be disassembled and installed according to actual needs, thereby improving the flexibility of the surgical operation. The fastener 2 can fix the connecting rod to the joint body 1 to ensure the connection strength between the connecting rod and the joint body 1, and it is safer to use. Through the above-mentioned arrangement, the domino joint of the present application can connect the connecting rods in parallel or in series, and the operation is more flexible.

[0035] It should be noted that, in this embodiment, the first direction and the second direction can be adjusted according to actual operation requirements and are not further limited herein.

[0036] Specifically, Figure 3 and Figure 6 As shown, a connecting hole 13 is opened on the joint body 1, and the fastener 2 is screwed into the connecting hole 13 to facilitate the disassembly and assembly of the components. After the fastener 2 is screwed into the connecting hole 13, it can directly abut on the connecting rod, so that the connecting rod can be abutted against the joint body 1, thereby strengthening the connection strength between the connecting rod and the joint body 1 and ensuring operation safety.

[0037] More specifically, if Figure 3 and Figure 6As shown, there are multiple connecting holes 13 and fasteners 2, and the multiple connecting holes 13 are spaced apart along the first direction. The multiple fasteners 2 can be connected to the multiple connecting holes 13 one by one, thereby realizing independent fixation of each connecting rod and ensuring that each connecting rod can be stably fixed on the joint body 1.

[0038] Specifically, Figure 3 As shown, the connector body 1 is a straight parallelepiped, which is stable and easy to manufacture, ensuring its reliability and durability during surgery. The connecting hole 13 is opened on the top surface of the connector body 1, so that the operator can easily install and remove the fastener 2 from the top surface of the connector body 1. The first through hole 11 and the second through hole 12 are opened on the side of the connector body 1, so that the connecting rod can be fixed in multiple directions, meeting the complex and changeable fixation requirements in spinal surgery.

[0039] More specifically, the first through hole 11 and the second through hole 12 are interconnected, a first channel extending in a first direction is provided in the first through hole 11, and a second channel extending in a second direction is provided in the second through hole 12, which are connected to the joint body 1 through the fastener 2, and the connecting rod is tightly abutted against the first channel or the second channel to ensure the connection strength and operation safety between the connecting rod and the joint body 1, and can increase the flexibility of surgical operation, and facilitate the connection of the connecting rod according to actual operation requirements. The first direction is perpendicular to the second direction to ensure that the connecting rod can form a more stable support structure when passing through the joint body 1, further improving the fixing effect.

[0040] Specifically, Figure 3-Figure 5 As shown, the first through hole 11 and the second through hole 12 are both provided with an arc end 111 and a straight end 112 connected to each other, and the outer wall of the connecting rod can abut against the arc end 111 and be clamped on the straight end 112. Through the above arrangement, the connecting rod can be more firmly fixed on the joint body 1. When the outer wall of the connecting rod abuts against the arc end 111, the arc end 111 can provide a smooth transition, reduce the resistance of the connecting rod during insertion, and make the operation smoother. The connecting rod will be clamped on the straight end 112 under the pressure of the fastener 2, thereby providing stable support for the connecting rod, ensuring that the connecting rod is not easy to loosen or shift after being fixed.

[0041] More specifically, if Figure 4 and Figure 5As shown, the connection between the arc end 111 and the straight end 112 is chamfered, making the connection smoother, avoiding sharp corners during the surgical operation, and making the operation safer. In addition, the chamfer setting also helps the connecting rod to pass through the connection between the arc end 111 and the straight end 112 more smoothly. Due to the existence of the chamfer, the resistance encountered by the connecting rod when passing through this place will be reduced accordingly, making the entire insertion and fixation process smoother, and improving the efficiency of the operation.

[0042] More specifically, Figure 4 and Figure 5 As shown, the straight end 112 is rectangular, making the overall structure more stable. The rectangle has clear corners, which can provide more reliable support and positioning for the connecting rod, and effectively prevent the connecting rod from sliding or shifting during the fixing process.

[0043] Specifically, in this embodiment, the fastener 2 is a top screw, and the fastening effect of the top screw can ensure that the connecting rod is firmly fixed to the joint body 1 and is not prone to loosening or falling off. In other embodiments, the fastener 2 can be a screw, as long as it can achieve the above-mentioned functions, and no further limitation is made here.

[0044] More specifically, in this embodiment, due to the optimization of the number of top screws, the number of top screws used is less than that used in the prior art, thereby reducing surgical operation time and production costs while integrating bidirectional (series and parallel connection of connecting rods) connections.

[0045] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Domino connector, characterized in that: include: A joint body (1), wherein the joint body (1) is provided with a first through hole (11) extending through the joint body along a first direction, and the joint body (1) is further provided with a plurality of second through holes (12) extending through the joint body along a second direction, wherein the first through hole (11) and the second through hole (12) are both used for passing a connecting rod, and the first direction and the second direction are arranged at an angle; A fastener (2), wherein the fastener (2) is detachably connected to the joint body (1) and is capable of fixing the connecting rod on the joint body (1).

2. The domino connector according to claim 1, characterized in that: The joint body (1) is provided with a connection hole (13), and the fastener (2) is screwed into the connection hole (13), so that the connection rod can be abutted against the joint body (1).

3. The domino connector according to claim 2, characterized in that: A plurality of the connection holes (13) and the fasteners (2) are provided, the plurality of connection holes (13) are arranged at intervals along the first direction, and the plurality of fasteners (2) can be connected to the plurality of connection holes (13) in a one-to-one correspondence.

4. The domino connector according to claim 2, characterized in that: The joint body (1) is in the form of a straight parallelepiped, the connection hole (13) is provided on the top surface of the joint body (1), and the first through hole (11) and the second through hole (12) are provided on the side surfaces of the joint body (1).

5. The domino connector according to claim 1, characterized in that: The first through hole (11) and the second through hole (12) are connected to each other, and the first direction is perpendicular to the second direction.

6. The domino connector according to claim 1, characterized in that: The first through hole (11) and the second through hole (12) are both provided with an arc end (111) and a straight end (112) connected to each other, and the outer peripheral wall of the connecting rod can abut against the arc end (111) and be clamped on the straight end (112).

7. The domino connector according to claim 6, characterized in that: The connection between the arc end (111) and the straight end (112) is chamfered.

8. The domino connector according to claim 6, characterized in that: The straight end (112) is rectangular.

9. The domino connector according to any one of claims 1 to 8, characterized in that: The fastener (2) is a top screw.

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