CN221980854U - Domino connector - Google Patents
Domino connector Download PDFInfo
- Publication number
- CN221980854U CN221980854U CN202420314624.XU CN202420314624U CN221980854U CN 221980854 U CN221980854 U CN 221980854U CN 202420314624 U CN202420314624 U CN 202420314624U CN 221980854 U CN221980854 U CN 221980854U
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- China
- Prior art keywords
- accommodating portion
- accommodating
- domino
- locking member
- spinal fixation
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- 230000007704 transition Effects 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 description 27
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
本实用新型属于医疗器械技术领域，公开了一种多米诺接头。该多米诺接头包括接头本体和锁紧件。接头本体包括相互连接的第一容纳部和第二容纳部，第一容纳部和第二容纳部背向彼此的一面均设置有容纳槽，脊柱固定棒能卡入容纳槽内。第一容纳部和第二容纳部上均设置有锁紧件，锁紧件可移动地穿设于第一容纳部或第二容纳部，通过移动锁紧件能使锁紧件与脊柱固定棒限位抵接。该多米诺接头用于连接脊柱固定棒，操作简便，能够提高手术效率和安全性。
The utility model belongs to the technical field of medical devices, and discloses a domino connector. The domino connector includes a connector body and a locking piece. The connector body includes a first accommodating portion and a second accommodating portion that are connected to each other, and the first accommodating portion and the second accommodating portion are both provided with accommodating grooves on the sides facing away from each other, and a spinal fixation rod can be inserted into the accommodating grooves. The first accommodating portion and the second accommodating portion are both provided with locking pieces, and the locking pieces can be movably inserted into the first accommodating portion or the second accommodating portion, and the locking pieces can be moved to limit the locking pieces and abut against the spinal fixation rod. The domino connector is used to connect the spinal fixation rod, is easy to operate, and can improve surgical efficiency and safety.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a domino joint.
Background
The internal fixation of the spine is an important treatment method for treating spine fracture, the spine is fixed through a fixing system in the treatment process, the system comprises a spine fixing rod and screws which are connected to the spine fixing rod in a threaded mode, the spine fixing rod is fixed on the spine through the screws, and the spine fixing rod supports the spine so as to achieve the purposes of maintaining physiological curvature, resetting, fixing, fusing, correcting and the like. When extension of the spinal fixation rod is desired, a domino joint is required. The domino joint in the prior art is mostly arranged into a closed square structure, a through hole is formed in the domino joint, when two spinal fixing rods are connected in the operation process, the spinal fixing rods need to pass through the through hole, and in the process, another spinal fixing rod connected to the domino joint needs to be avoided.
Disclosure of utility model
The utility model aims to provide a domino joint which is used for connecting a spine fixing rod, is simple and convenient to operate and can improve the operation efficiency and safety.
To achieve the purpose, the utility model adopts the following technical scheme:
a domino joint comprising:
the joint comprises a joint body, wherein the joint body comprises a first accommodating part and a second accommodating part which are connected with each other, accommodating grooves are formed in the surfaces, facing away from each other, of the first accommodating part and the second accommodating part, and a spine fixing rod can be clamped into the accommodating grooves;
The locking piece, first accommodation portion with all be provided with on the second accommodation portion the locking piece, the locking piece movably wears to locate first accommodation portion or the second accommodation portion, through removing the locking piece enables the locking piece with spacing butt of backbone fixed stick.
Preferably, the first accommodation portion and the second accommodation portion are each provided in a long strip shape.
Preferably, the length of the first accommodating portion is greater than that of the second accommodating portion, the locking pieces are arranged at two ends of the first accommodating portion and the second accommodating portion, a U-shaped groove is formed between the two locking pieces on the first accommodating portion, an opening of the U-shaped groove faces away from the second accommodating portion, and the U-shaped groove penetrates through the first accommodating portion in the height direction of the first accommodating portion.
Preferably, the first accommodating portion and the second accommodating portion are connected in a circular arc transition mode at the connecting position.
Preferably, the length of the first receiving portion is equal to the length of the second receiving portion.
Preferably, the receiving channel is an arcuate channel having a radius greater than the radius of the spinal fixation rod.
Preferably, the locking member is tapered at an end adjacent the spinal fixation rod.
Preferably, a plurality of locking members are provided on the first receiving portion and the second receiving portion at intervals along the extending direction of the spinal fixation rod.
Preferably, the first accommodating portion and the second accommodating portion are provided with threaded holes along the moving direction of the locking member, and the locking member is screwed with the first accommodating portion or the second accommodating portion through the threaded holes.
Preferably, a mounting groove is formed in the end face, away from the spine fixing rod, of the locking member, and an operating tool can be clamped into the mounting groove to screw the locking member.
The utility model has the beneficial effects that:
When the domino joint provided by the utility model is particularly used, two spinal fixing rods are respectively clamped into the accommodating grooves of the first accommodating part and the second accommodating part from two sides of the joint body through the holding device, and the spinal fixing rods are locked in the accommodating grooves by using the locking piece, so that the connection of the two spinal fixing rods can be completed. Because the holding groove is arranged on the first holding part and the second holding part opposite to each other, the spine fixing rod can be clamped into the holding groove from the side face of the joint body, compared with the traditional assembly mode of passing through the domino joint, the operation is simple, the operation efficiency is high, and other instruments except the holding device are not required to be used for assistance, so that the interference of the auxiliary instruments and a patient is avoided, and the operation safety is improved. The spine fixing rod can be limited in the accommodating groove by moving the locking piece, the operation is convenient, the setting of the locking piece prevents the spine fixing rod from separating from the accommodating bin, and the operation effect is ensured.
Drawings
Fig. 1 is a cross-sectional view of a domino joint provided by a first embodiment of the present utility model;
FIG. 2 is a schematic illustration of a domino joint according to a first embodiment of the present utility model in connection with a spinal fixation rod
FIG. 3 is a top view of a domino joint in accordance with a first embodiment of the present utility model in connection with a spinal fixation rod;
FIG. 4 is a top view of a second embodiment of the present utility model providing a domino joint in connection with a spinal fixation rod;
fig. 5 is a top view of a third embodiment of the present utility model providing a domino joint in connection with a spinal fixation rod.
In the figure:
1. A joint body; 11. a first accommodation portion; 111. a U-shaped groove; 12. a second accommodating portion; 13. a receiving groove; 14. a threaded hole; 2. a locking member; 21. a mounting groove; 100. spinal fixation rod.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Referring to fig. 1 to 5, embodiments of the present utility model provide a domino joint for connecting a spinal fixation rod 100, which is easy to operate and can improve operation efficiency and safety. The domino joint comprises a joint body 1 and a locking piece 2. The joint body 1 includes a first accommodation portion 11 and a second accommodation portion 12 which are connected to each other, and accommodation grooves 13 are provided on the surfaces of the first accommodation portion 11 and the second accommodation portion 12 facing away from each other, and the spinal fixation rod 100 can be snapped into the accommodation grooves 13. The first accommodating part 11 and the second accommodating part 12 are respectively provided with a locking piece 2, the locking pieces 2 are movably penetrated in the first accommodating part 11 or the second accommodating part 12, and the locking pieces 2 can be in limiting abutting connection with the spinal fixing rod 100 by moving the locking pieces 2.
Referring to fig. 1 and 2, in specific use, two spinal fixation rods 100 are respectively inserted into the receiving grooves 13 of the first receiving portion 11 and the second receiving portion 12 from both sides of the joint body 1 by the holder, and the spinal fixation rods 100 are locked in the receiving grooves 13 by the locking member 2, thereby completing the connection of the two spinal fixation rods 100. Because the first accommodation portion 11 and the second accommodation portion 12 are provided with accommodation groove 13 in the one side that is facing away from each other, consequently follow the side of joint body 1 can be with backbone fixed stick 100 card go into accommodation groove 13 in, compare in traditional follow domino joint's assembly methods that pass, easy operation is efficient, need not to use simultaneously and hold other apparatuses except that getting the ware and assist, avoided auxiliary apparatus and patient to take place the condition of interference, improved the security of operation. The spine fixing rod 100 can be limited in the accommodating groove 13 by moving the locking piece 2, the operation is convenient, the setting of the locking piece 2 can prevent the spine fixing rod 100 from being separated from the accommodating groove 13, and the operation effect is ensured.
Alternatively, the first accommodation portion 11 and the second accommodation portion 12 are each provided in an elongated shape. The first accommodation portion 11 and the second accommodation portion 12 in the form of long strips are convenient to process. Referring to fig. 3, in some alternative embodiments, the length of the first accommodating portion 11 is greater than that of the second accommodating portion 12, two ends of the first accommodating portion 11 and the second accommodating portion 12 are respectively provided with a locking member 2, a U-shaped groove 111 is disposed between two locking members 2 on the first accommodating portion 11, an opening of the U-shaped groove 111 faces away from the second accommodating portion 12, and the U-shaped groove 111 penetrates through the first accommodating portion 11 along the height direction of the first accommodating portion 11. That is, the first accommodating portion 11 and the second accommodating portion 12 together form the joint body 1 of a horseshoe shape, since the length of the first accommodating portion 11 is greater than that of the second accommodating portion 12, and the locking pieces 2 are provided at both ends of the first accommodating portion 11 and the second accommodating portion 12, so that the span between the two locking pieces 2 on the first accommodating portion 11 is greater than the span between the two locking pieces 2 on the second accommodating portion 12, thereby improving the connection strength between the joint body 1 and the spinal fixing plate, the design of the horseshoe shape can also improve the aesthetic property of the joint body 1, and the U-shaped groove 111 can then alleviate the quality of the joint body 1.
Preferably, the connection position of the first accommodating part 11 and the second accommodating part 12 is in arc transition connection, so that stress concentration phenomenon is reduced, mechanical performance of the connector body 1 is improved, a user is prevented from being scratched by edges, and attractiveness of the connector body 1 is ensured.
Referring to fig. 4, in another alternative embodiment, the length of the first receiving portion 11 is equal to the length of the second receiving portion 12. That is, the first accommodation portion 11 and the second accommodation portion 12 together form the elongated joint body 1. It will be appreciated that the specific shape of the connector body is varied according to the actual connection requirements and is not limited to the present application.
Referring to fig. 5, in other embodiments, the length of the first accommodating portion 11 is equal to the length of the second accommodating portion 12, two ends of the first accommodating portion 11 and the second accommodating portion 12 are respectively provided with a locking member 2, a U-shaped groove 111 is respectively provided between the two locking members 2 on the first accommodating portion 11 and the second accommodating portion 12, the two U-shaped grooves 111 are symmetrically arranged, and the U-shaped groove 111 penetrates through the first accommodating portion 11 or the second accommodating portion 12 along the height direction of the joint body 1. That is, the joint body 1 is provided in an "i" shape.
Optionally, the receiving channel 13 is an arcuate channel having a radius greater than the radius of the spinal fixation rod 100. The arc-shaped groove can be better matched with the spine fixing rod 100, and because the radius of the arc-shaped groove is larger than that of the spine fixing rod 100, after the spine fixing rod 100 is clamped into the accommodating groove 13, the position of the spine fixing rod 100 in the accommodating groove 13 can be adjusted by moving the spine fixing rod 100, and then the locking piece 2 is used for locking, so that the accuracy of assembly is ensured.
Further, for convenience of description, the accommodating groove 13 on the first accommodating portion 11 is defined as a first accommodating groove, the accommodating groove 13 on the second accommodating portion 12 is defined as a second accommodating groove, and radii of the first accommodating groove and the second accommodating groove are different, so that the first accommodating groove and the second accommodating groove can be correspondingly clamped into the spinal fixing rods 100 with different sizes, the application range of the joint body 1 is expanded, and requirements for connecting the spinal fixing rods 100 with different sizes are met. It will be appreciated that the radii of the first and second receiving slots are determined based on the radius of the spinal fixation rod 100 and that the present embodiment is not particularly limited.
Preferably, the end of the retaining member 2 adjacent the spinal fixation rod 100 is tapered. The pressure intensity between the locking piece 2 and the spine fixing rod 100 can be increased through the arrangement, so that the spine fixing rod 100 can be abutted against the accommodating groove 13 by the locking piece 2, and the limiting stability between the spine fixing rod 100 and the joint body 1 is ensured.
Further, screw holes 14 are provided in the first accommodation portion 11 and the second accommodation portion 12 in the moving direction of the lock member 2, and the lock member 2 is screwed with the first accommodation portion 11 or the second accommodation portion 12 through the screw holes 14. In this embodiment, the threaded hole 14 is disposed on the top surface of the joint body 1 and is communicated with the accommodating groove 13, and in the initial position, the tapered end of the locking member 2 is located in the threaded hole 14, and by screwing the locking member 2, the tapered end of the locking member 2 can be moved in a direction close to the spinal fixing rod 100, so that the tapered end of the locking member 2 can be in spacing abutment with the spinal fixing rod 100, so as to lock the spinal fixing rod 100 in the accommodating groove 13.
Optionally, a mounting groove 21 is provided on the end of the locking member 2 remote from the spinal fixation rod 100, and an operating tool can be snapped into the mounting groove 21 to screw the locking member 2. After the spinal fixation rod 100 is inserted into the receiving groove 13, an operating tool (e.g., a screwdriver) is inserted into the mounting groove 21, and the locking member 2 can be screwed by the operating tool, so that the operation is very convenient. Optionally, the locking member 2 is a screw.
Alternatively, the locking member 2 is provided in the first receiving portion 11 and the second receiving portion 12 in plural at intervals along the extending direction of the spinal fixation rod 100. The plurality of locking members 2 can increase locking strength to prevent the spinal fixation rod 100 from being separated from the joint body 1. The number of the locking members 2 is determined according to the actual connection requirements, and the present embodiment is not particularly limited.
Alternatively, the joint body 1 and the locking member 2 are made of titanium alloy materials having good tissue compatibility to prevent rejection by the patient.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420314624.XU CN221980854U (en) | 2024-02-20 | 2024-02-20 | Domino connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420314624.XU CN221980854U (en) | 2024-02-20 | 2024-02-20 | Domino connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221980854U true CN221980854U (en) | 2024-11-12 |
Family
ID=93341951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420314624.XU Active CN221980854U (en) | 2024-02-20 | 2024-02-20 | Domino connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221980854U (en) |
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2024
- 2024-02-20 CN CN202420314624.XU patent/CN221980854U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |