CN210990670U - Locking screw joint - Google Patents
Locking screw joint Download PDFInfo
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- CN210990670U CN210990670U CN201921770336.0U CN201921770336U CN210990670U CN 210990670 U CN210990670 U CN 210990670U CN 201921770336 U CN201921770336 U CN 201921770336U CN 210990670 U CN210990670 U CN 210990670U
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- locking screw
- screw joint
- sleeve
- operating tool
- limiting structure
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Abstract
A locking screw joint belongs to the field of medical equipment and comprises a screw sleeve and a stud body, wherein the screw sleeve is connected with the stud body and can be broken and separated at a connecting position; the inner peripheral surface of the nail sleeve is provided with a first limiting structure used for being matched with an operating tool, and the outer peripheral surface of the nail sleeve is provided with a second limiting structure used for being matched with the operating tool; after the operating tool is matched with the first limiting structure or the second limiting structure, the operating tool and the nail sleeve are relatively fixed in the circumferential direction of the nail sleeve so as to drive the locking screw joint to rotate. The operation mode of driving the locking screw joint can be increased, and the operation of fixing the locking screw joint is more flexible.
Description
Technical Field
The utility model relates to the field of medical equipment, particularly, relate to a locking screwed joint.
Background
At present, in a metal spine nail rod internal fixing system, a locking screw joint (screw plug) is often adopted to pressurize a connecting rod, and after pressurization or expansion is confirmed to be completed, a torque wrench is used for inserting an extension rod to be matched with a nut driver for final screwing.
The research shows that the prior locking screw joint has the following defects in the using process:
the existing driving locking screw joint has a single operation mode.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a locking screwed joint, its operation that can increase drive locking screwed joint, the operation of fixed locking screwed joint is more nimble.
The embodiment of the utility model is realized like this:
in a first aspect, an embodiment of the present invention provides a locking screwed joint, which includes:
the screw sleeve is connected with the stud body, and the screw sleeve and the stud body can be broken and separated at the connecting position; the inner peripheral surface of the nail sleeve is provided with a first limiting structure used for being matched with a first operating tool, and the outer peripheral surface of the nail sleeve is provided with a second limiting structure used for being matched with a second operating tool; after the first operating tool is matched with the first limiting structure or the second operating tool is matched with the second limiting structure, the first operating tool or the second operating tool and the nail sleeve are relatively fixed in the circumferential direction of the nail sleeve so as to drive the locking screw joint to rotate.
In an alternative embodiment, the first limiting structure is configured as a first abutting surface.
In an alternative embodiment, the first stop formation is provided as a first groove.
In an alternative embodiment, the second limiting structure is configured as a second abutting surface.
In an alternative embodiment, the second stop formation is provided as a second recess.
In an alternative embodiment, the second groove extends along the axial direction of the nail sleeve, and one end of the second groove extends to an end face of the nail sleeve far away from the stud body.
In an alternative embodiment, the second groove extends along the axial direction of the nail sleeve, and one end of the second groove extends to the connecting position of the nail sleeve and the stud body.
In an optional embodiment, the number of the first limiting structures is multiple, and the multiple first limiting structures are arranged at intervals along the circumferential direction of the nail sleeve.
In an optional embodiment, the number of the second limiting structures is multiple, and the multiple second limiting structures are arranged at intervals along the circumferential direction of the nail sleeve.
In an alternative embodiment, an annular pre-break groove extending in the circumferential direction of the tack bush is provided at the connection location.
The embodiment of the utility model provides a beneficial effect is:
in summary, the present embodiment provides a locking screw joint, which can be screwed into a proper position and make the end of the stud body abut against the end of the connecting rod by cooperating with an operation tool, such as a wrench or a socket. Because locking screwed joint's nail sheathes in and is provided with first limit structure and second limit structure, during the operation, can select the operation instrument that matches with first limit structure or second limit structure according to site environment, and after operation instrument and first limit structure or second limit structure cooperation, rotate the operation instrument and all can drive the nail cover and rotate to drive locking screwed joint and rotate, realize locking screwed joint and screw or unscrew. The locking screw joint can be matched with operating tools of different models, the operating mode for fixing the locking screw joint is flexible, the operation time is shortened, and the operation efficiency is improved. Meanwhile, as the locking screw joint is provided with the first limiting structure and the second limiting structure which are matched with operating tools of different models, after one of the limiting structures is damaged, the operating tool can be matched with the other limiting structure to lock the locking screw joint, and the operation time is prevented from being prolonged due to the fact that the locking screw joint is replaced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a locking screw joint according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a locking screw joint according to an embodiment of the present invention;
fig. 3 is a top view of an embodiment of the present invention.
Icon:
001-locking screw joint; 100-nail sleeve; 110-a first limit structure; 120-a second limit structure; 200-a stud body; 210-a thread groove; 300-ring-shaped pre-breaking groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a locking screwed joint 001, can cooperate the connective bar to use, compresses tightly the connective bar in vivo, realizes the fixed of fracture position. When locking screwed joint 001 used, the model of the operation instrument that pairs with locking screwed joint 001 is various, selects according to the site environment, uses in a flexible way, shortens operation time, improves operation efficiency.
Referring to fig. 1 to 3, the locking screw joint 001 of the present embodiment includes a screw sleeve 100 and a stud body 200, wherein the screw sleeve 100 is connected to the stud body 200, and the screw sleeve 100 and the stud body can be broken off at a connection position; the inner circumferential surface of the nail sleeve 100 is provided with a first limiting structure 110 used for being matched with a first operating tool, and the outer circumferential surface of the nail sleeve 100 is provided with a second limiting structure 120 used for being matched with a second operating tool; after the first operating tool is matched with the first limiting structure 110 or the second operating tool is matched with the second limiting structure 120, the first operating tool or the second operating tool is relatively fixed with the nail sleeve 100 in the circumferential direction of the nail sleeve 100 so as to drive the locking screw joint 001 to rotate.
The first operating tool or the second operating tool engaged with the locking screw 001 may be a wrench, a socket, a pliers, or the like, which is not illustrated here. Furthermore, the first operating means and the second operating means may be one and the same tool having a first drive portion cooperating with the first stop structure 110 and a second drive portion cooperating with the second stop structure 120. Obviously, in other embodiments, the first operating means and the second operating means may be two separate tools. After the operating tool is matched with the locking screw joint 001, the operating tool can drive the locking screw joint 001 to rotate so as to realize the screwing or unscrewing of the locking screw joint 001.
When selecting operation tool drive locking screwed joint 001 to rotate, because be provided with first limit structure 110 and second limit structure 120 on locking screwed joint 001's the nail cover 100, can select the operation tool that can match with first limit structure 110 or second limit structure 120 according to site environment, and after operation tool and first limit structure 110 or second limit structure 120 cooperation, it can drive nail cover 100 and rotate together to rotate operation tool homoenergetic, thereby drive locking screwed joint 001 and rotate, realize locking screwed joint 001 and screw or unscrew. Locking screwed joint 001 can match with the operation tool of different models, and the operation mode of fixed locking screwed joint 001 is various, and the flexible operation is changeable among the actual operation process, shortens the operation time, improves operation efficiency. Meanwhile, as the locking screw joint 001 is provided with the first limiting structure 110 and the second limiting structure 120 which are matched with different types of operating tools, when the first limiting structure 110 or the second limiting structure 120 is damaged and cannot be used, the operating tools can be matched with the first limiting structure 110 or the second limiting structure which is not damaged, the rotation of the locking screw joint 001 is realized, and the operation time is prevented from being prolonged due to the fact that the locking screw joint 001 is replaced.
In this embodiment, the nail sleeve 100 is a hollow cylindrical structure, and the cross section of the nail sleeve 100 is substantially circular, so that the structure is regular and convenient to process and manufacture. The first limiting structure 110 is disposed on the inner circumferential surface of the nail sleeve 100, and the second limiting structure 120 is disposed on the outer circumferential surface of the nail sleeve 100.
It should be noted that the number of the first limiting structures 110 may be at least one, in other words, the number of the first limiting structures 110 may be one or more, and when the number of the first limiting structures 110 is multiple, the multiple first limiting structures 110 are uniformly arranged at intervals along the circumferential direction of the nail sleeve 100. In this embodiment, the number of the first limiting structures 110 is six, and the six first limiting structures 110 are uniformly spaced along the circumferential direction of the nail sleeve 100, and obviously, in other embodiments, the number of the first limiting structures 110 may not be limited to six.
Optionally, the first limiting structure 110 is a first abutting surface disposed on the inner circumferential surface, and the first abutting surface may be a plane or an arc surface. In this embodiment, the first abutting surface is an arc surface, the circumferential direction of the first abutting surface is the same as the circumferential direction of the nail sleeve 100, and the first abutting surface forms a groove structure, in other words, when the first abutting surface is an arc surface, the first limiting structure 110 is a first groove disposed on the inner circumferential surface, and the first groove is an arc groove.
Obviously, in other embodiments, the first recess may also be a rectangular slot or the like. In other words, the first stopper structure 110 may include a plurality of faces connected to form a groove structure. The operating tool is provided with a protrusion matched with the first groove, the protrusion on the operating tool is clamped with the first groove, and the locking screw joint 001 is driven to rotate through the operating tool.
In this embodiment, the length of the first groove extends along the axial direction of the tack sleeve 100. Further, both ends of the first groove in the length direction thereof extend to both end surfaces of the nail sleeve 100 in the axial direction thereof, respectively. The operating tool can be inserted into the first groove from the end face, away from the stud body 200, of the nail sleeve 100, so that the operating tool and the first groove can be conveniently matched for use, the contact area between the operating tool and the first groove is increased, the sliding is not prone to occurring, and the operating tool can be conveniently used for driving the locking screw joint 001 to rotate.
It should be noted that the number of the second position-limiting structures 120 may be at least one, in other words, the number of the second position-limiting structures 120 may be one or more, and when the number of the second position-limiting structures 120 is multiple, the multiple second position-limiting structures 120 are uniformly arranged at intervals along the circumferential direction of the nail sleeve 100. In this embodiment, the number of the second limiting structures 120 is six, and the six second limiting structures 120 are uniformly spaced along the circumferential direction of the nail sleeve 100, and obviously, in other embodiments, the number of the second limiting structures 120 may not be limited to six.
Optionally, the second limiting structure 120 is a second abutting surface disposed on the inner circumferential surface, and the second abutting surface may be a plane or an arc surface. In this embodiment, the second abutting surface is an arc surface, the circumferential direction of the second abutting surface is the same as the circumferential direction of the nail sleeve 100, and the second abutting surface forms a groove structure, in other words, when the second abutting surface is an arc surface, the second limiting structure 120 is a second groove disposed on the outer circumferential surface, and the second groove is an arc groove.
Obviously, in other embodiments, the second recess may also be a rectangular slot or the like. In other words, the second stopper structure 120 may include a plurality of faces connected to form a groove structure. The operating tool is provided with a protrusion matched with the second groove, the protrusion on the operating tool is clamped with the second groove, and the locking screw joint 001 is driven to rotate through the operating tool.
In this embodiment, the length of the second groove extends along the axial direction of the tack sleeve 100. Further, one end of the second groove along the length direction extends to the end face, away from the stud body 200, of the stud sleeve 100, and the other end of the second groove extends to the connection position of the stud sleeve 100 and the stud body 200. The operating tool can be inserted into the second groove from the end face, away from the stud body 200, of the nail sleeve 100, so that the operating tool and the second groove can be conveniently matched for use, the contact area between the operating tool and the second groove is increased, the sliding is not easy to occur, and the operating tool can be conveniently used for driving the locking screw joint 001 to rotate. Meanwhile, the second groove extends to the connecting position of the screw sleeve 100 and the stud body 200, so that the thickness of the connecting position of the screw sleeve 100 and the screw body is reduced, and the screw sleeve 100 and the stud body 200 are conveniently broken at the connecting position after the stud body 200 is screwed into a proper position.
In other embodiments, in order to facilitate breaking of the pin sleeve 100 and the stud body 200, an annular pre-breaking groove 300 is provided at the connection location of the pin sleeve 100 and the stud body 200, the annular pre-breaking groove 300 extending in the circumferential direction of the pin sleeve 100, in other words, the annular pre-breaking groove 300 is provided around the pin sleeve 100. Through the arrangement of the annular pre-breaking groove 300, the groove depth direction of the annular pre-breaking groove 300 is inward along the radial direction of the stud sleeve 100, so that the thickness of the connecting position can be reduced, and the stud sleeve 100 and the stud body 200 can be conveniently broken at the connecting position.
In this embodiment, the outer peripheral surface of the stud body 200 is provided with a threaded groove 210.
The locking screwed joint 001 that this embodiment provided, owing to be provided with first limit structure 110 and second limit structure 120 on the locking screwed joint 001 to can use with the operation instrument cooperation of different models, can increase the operation mode that drives locking screwed joint 001, the operation of fixed locking screwed joint 001 is more nimble.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A locking screw joint, characterized by comprising:
the screw sleeve is connected with the stud body, and the screw sleeve and the stud body can be broken off and separated at a connecting position; the inner circumferential surface of the nail sleeve is provided with a first limiting structure used for being matched with a first operating tool, and the outer circumferential surface of the nail sleeve is provided with a second limiting structure used for being matched with a second operating tool; after the first operating tool is matched with the first limiting structure or the second operating tool is matched with the second limiting structure, the first operating tool or the second operating tool and the nail sleeve are relatively fixed in the circumferential direction of the nail sleeve so as to drive the locking screw joint to rotate.
2. The locking screw joint according to claim 1, wherein:
the first limiting structure is arranged as a first plane.
3. The locking screw joint according to claim 1, wherein:
the first limiting structure is arranged as a first groove.
4. The locking screw joint according to claim 1, wherein:
the second limiting structure is arranged to be a second plane.
5. The locking screw joint according to claim 1, wherein:
the second limiting structure is arranged as a second groove.
6. The locking screw joint according to claim 5, wherein:
the second groove extends along the axis direction of the nail sleeve, and one end of the second groove extends to the end face, far away from the stud body, of the nail sleeve.
7. The locking screw joint according to claim 5, wherein:
the second groove extends along the axis direction of the nail sleeve, and one end of the second groove extends to the connecting position of the nail sleeve and the stud body.
8. The locking screw joint according to any one of claims 1 to 7, wherein:
the number of the first limiting structures is multiple, and the first limiting structures are arranged along the circumferential direction of the nail sleeve at intervals.
9. The locking screw joint according to any one of claims 1 to 7, wherein:
the quantity of second limit structure is a plurality of, and is a plurality of second limit structure follows the circumference interval of nail cover is arranged.
10. The locking screw joint according to claim 1, wherein:
and an annular pre-breaking groove extending along the circumferential direction of the nail sleeve is arranged at the connecting position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770336.0U CN210990670U (en) | 2019-10-21 | 2019-10-21 | Locking screw joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770336.0U CN210990670U (en) | 2019-10-21 | 2019-10-21 | Locking screw joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210990670U true CN210990670U (en) | 2020-07-14 |
Family
ID=71503853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921770336.0U Active CN210990670U (en) | 2019-10-21 | 2019-10-21 | Locking screw joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210990670U (en) |
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2019
- 2019-10-21 CN CN201921770336.0U patent/CN210990670U/en active Active
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