阅读说明：本技术 双向锁紧钉帽系统 (Bidirectional locking nail cap system ) 是由 花世源 于 2021-01-27 设计创作，主要内容包括：本发明实施例是关于一种双向锁紧钉帽系统。包括：主螺杆,包括一体连接的螺杆头部、螺杆尾部和中间连接部,所述螺杆头部外表面设置有外螺纹,所述螺杆尾部的顶端设置有第一安装孔；尾帽,所述尾帽第一端设置有孔,所述尾帽与所述螺杆尾部活动连接,连接后所述螺杆尾部位于该孔内；所述尾帽第一端外表面上设置有与所述螺杆头部外螺纹方向相反的外螺纹；所述尾帽第二端顶端设置有第二安装孔。本发明实施例中,上述双向锁紧钉帽系统采用主螺杆和尾帽分体结构的设计,在需要将双向锁紧钉帽系统取出时,可通过拧动尾帽先取出尾帽,再取出主螺杆的方式进行拆除,不需要破坏被连接工件,在医疗中使用时,可降低对病人骨骼的损伤。(The embodiment of the invention relates to a bidirectional locking nut system. The method comprises the following steps: the main screw comprises a screw head, a screw tail and a middle connecting part which are integrally connected, wherein the outer surface of the screw head is provided with an external thread, and the top end of the screw tail is provided with a first mounting hole; the first end of the tail cap is provided with a hole, the tail cap is movably connected with the tail part of the screw rod, and the tail part of the screw rod is positioned in the hole after the tail cap is connected with the screw rod; the outer surface of the first end of the tail cap is provided with an external thread with the direction opposite to that of the external thread at the head of the screw rod; and a second mounting hole is formed in the top end of the second end of the tail cap. In the embodiment of the invention, the bidirectional locking screw cap system adopts the design of a split structure of the main screw and the tail cap, when the bidirectional locking screw cap system needs to be taken out, the tail cap can be taken out firstly by screwing the tail cap, and then the main screw is taken out for dismounting, so that the connected workpiece does not need to be damaged, and when the bidirectional locking screw cap system is used in medical treatment, the damage to the bone of a patient can be reduced.)

1. A bi-directional locking nut system, comprising:

the main screw comprises a screw head, a screw tail and a middle connecting part which are integrally connected, wherein the outer surface of the screw head is provided with an external thread, and the top end of the screw tail is provided with a first mounting hole;

the first end of the tail cap is provided with a hole, the tail cap is movably connected with the tail part of the screw rod, and the tail part of the screw rod is positioned in the hole after the tail cap is connected with the screw rod; the outer surface of the first end of the tail cap is provided with an external thread with the direction opposite to that of the external thread at the head of the screw rod; and a second mounting hole is formed in the top end of the second end of the tail cap.

2. The bidirectional locking nut system of claim 1, further comprising a pressing washer, wherein a through hole is formed in the center of the pressing washer, a first end of the tail nut passes through the through hole and can rotate in the through hole when being connected with the tail of the screw rod, and the diameter of a second end of the tail nut is larger than that of the through hole; wherein a plurality of pointed end positioning structures are arranged on one surface of the compression gasket, and the pointed end positioning structures face the head direction of the screw rod after the tail cap is connected with the tail part of the screw rod.

3. The bi-directional locking nut system of claim 2 wherein the main screw rod is centrally provided with a through-going guide through-hole.

4. The bi-directional locking nut system of claim 2 wherein the guide through hole is a circular through hole for passage of a guide pin.

5. The bi-directional locking nut system of claim 3 wherein the tail nut is threaded or mounted on the screw tail.

6. The bi-directional locking nut system of claim 3 wherein the main screw sidewall has at least one stress relief slot therethrough.

7. The bi-directional locking nut system of claims 1-6 wherein the first and second mounting holes are one of hexagonal socket holes, quincunx holes, cross holes, and a hole.

8. The bi-directional locking nut system of claim 7 wherein the tail nut second end is of a frustoconical configuration or a spherical configuration or a hemispherical configuration.

9. The bi-directional locking nut system of claim 8 wherein the screw head is provided with a chip structure on the external thread.

10. The bi-directional locking nut system of claim 9 wherein the top end of the screw head is of a pointed or frustoconical configuration.

Technical Field

The embodiment of the invention relates to the technical field of medical instruments, in particular to a bidirectional locking nut system.

Background

The threaded connection can be seen everywhere in the life nowadays, the figure of the thread can be seen everywhere in the medical instrument, no matter various surgical tools or various inspection equipment used by doctors can see the figure of the thread, and the application of the thread has various structural forms. The screw cap is particularly obvious in orthopedic surgery, and products related to screw threads are used in most cases in the surgery processes of trauma, spinal column, maxillofacial and the like, so that the screw cap is necessary to research a novel screw cap in medical instruments, the surgical selectivity can be effectively widened by researching the novel structure, doctors are helped to better complete the process of saving and supporting injuries, the related surgery process is simplified, and the surgery safety is improved.

However, the thread connection or transmission has the inherent defect, the operation efficiency is low, stress concentration is easy to generate in the thread pressure groove, the thread connection is easy to loosen in the environments of impact, vibration, variable load and the like, the problem which is most easy to occur when the thread is used for connecting the bone fragments in the orthopedic surgery is loosening, various impact loads can occur in the movement process of surgical personnel, and the loosening is fatal to the surgery. In order to overcome the defect, the existing product designs increase notches on the threads, designs the threads with variable pitches or increases the tooth depth of the threads, but the problems cannot be solved fundamentally. The forward and reverse threaded nut system is a product researched for solving the special requirement under the orthopedic surgery environment. Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.

It is noted that this section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

Disclosure of Invention

It is an object of embodiments of the present invention to provide a bi-directional locking nut system that overcomes, at least to some extent, one or more of the problems due to limitations and disadvantages of the related art.

According to a first aspect of embodiments of the present invention, there is provided a two-way locking nut system, comprising:

the main screw comprises a screw head, a screw tail and a middle connecting part which are integrally connected, wherein the outer surface of the screw head is provided with an external thread, and the top end of the screw tail is provided with a first mounting hole;

the first end of the tail cap is provided with a hole, the tail cap is movably connected with the tail part of the screw rod, and the tail part of the screw rod is positioned in the hole after the tail cap is connected with the screw rod; the outer surface of the first end of the tail cap is provided with an external thread with the direction opposite to that of the external thread at the head of the screw rod; and a second mounting hole is formed in the top end of the second end of the tail cap.

In an embodiment of the invention, the screw rod further comprises a compression gasket, a through hole is formed in the center of the compression gasket, a first end of the tail cap penetrates through the through hole and can rotate in the through hole when being connected with the tail part of the screw rod, and the diameter of a second end of the tail cap is larger than that of the through hole; wherein a plurality of pointed end positioning structures are arranged on one surface of the compression gasket, and the pointed end positioning structures face the head direction of the screw rod after the tail cap is connected with the tail part of the screw rod.

In an embodiment of the present invention, a through guiding hole is disposed in the center of the main screw rod.

In an embodiment of the invention, the guide through hole is a circular through hole for passing through the guide needle.

In an embodiment of the invention, the tail cap is in threaded connection or embedded connection with the tail part of the screw rod.

In an embodiment of the present invention, at least one stress relief groove is disposed on a sidewall of the main screw.

In an embodiment of the present invention, the first mounting hole and the second mounting hole are one of a hexagon socket hole, a quincunx hole, a cross hole, and a hole.

In an embodiment of the invention, the second end of the tail cap is of a frustum structure, a spherical structure or a semispherical structure.

In an embodiment of the invention, a chip structure is arranged on the external thread of the head of the screw rod.

In an embodiment of the invention, the top end of the screw head is of a pointed structure or a frustum structure.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects:

in the embodiment of the invention, the bidirectional locking screw cap system adopts the design of a split structure of the main screw and the tail cap, when the bidirectional locking screw cap system needs to be taken out, the tail cap can be taken out firstly by screwing the tail cap, and then the main screw is taken out for dismounting, the connected workpiece does not need to be damaged, and when the bidirectional locking screw cap system is used in medical treatment, the damage to the bone of a patient can be reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 shows a schematic structural view of a bi-directional locking nut system in an exemplary embodiment of the invention;

FIG. 2 shows a schematic cross-sectional view of a bi-directional locking nut system in an exemplary embodiment of the invention;

FIG. 3 shows a schematic diagram of a chip structure in an exemplary embodiment of the invention

Fig. 4 is a schematic structural diagram illustrating a tail cap and a screw tail in a mosaic connection according to an exemplary embodiment of the present invention.

Wherein: 100-main screw, 101-screw head, 102-screw tail, 200-tail cap, 201-tail cap first end, 202-tail cap second end, 300-pressing gasket, 400-guiding through hole, 500-stress relief groove and 600-scrap structure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the invention, which are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

The exemplary embodiment first provides a two-way locking nut system. Referring to fig. 1, the bi-directional locking nut system may include: a main screw 100, a tail cap 200; the main screw 100 comprises a screw head 101, a screw tail 102 and a middle connecting part which are integrally connected, wherein the outer surface of the screw head 101 is provided with an external thread, and the top end of the screw tail 102 is provided with a first mounting hole; the first end 201 of the tail cap is provided with a hole, the tail cap is movably connected with the tail part 102 of the screw rod, and the tail part 102 of the screw rod is positioned in the hole after the tail cap is connected; the outer surface of the first end 201 of the tail cap is provided with an external thread with the direction opposite to that of the external thread of the head part 101 of the screw rod; the top end of the tail cap second end 202 is provided with a second mounting hole.

Specifically, two-way locking nut system is for dividing the body structure, can include main screw 100, tail cap 200, screw head 101 surface is provided with the external screw thread, be provided with on the first end 201 surface of tail cap with screw head 101 external screw thread opposite direction's external screw thread, after main screw 100 screw in two treat the connecting piece, when installing tail cap 200 screw in at screw afterbody 102 again, through opposite direction's external screw thread, two treat and form stable relative screw thread pressure force between the connecting piece, stop the power back of screw in this moment, no matter two-way locking nut system to which orientation rotatory homoenergetic realize the relative pressurization of two connecting pieces, can be better keep two relative pressure of treating the connecting piece.

The bidirectional locking screw cap system adopts the design of the split structure of the main screw rod 100 and the tail cap 200, when the bidirectional locking screw cap system needs to be taken out, the tail cap 200 can be taken out firstly by screwing the tail cap 200, and then the main screw rod 100 is taken out for dismounting, the connected workpiece does not need to be damaged, and when the bidirectional locking screw cap system is used in the medical field, the damage to the bone of a patient can be reduced.

Next, the respective parts of the above-described bidirectional locking nut system in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 3.

In one embodiment, a pressing gasket 300 can be further included, a through hole is formed in the center of the pressing gasket 300, the tail cap first end 201 passes through the through hole and can rotate in the through hole when being connected with the screw tail portion 102, and the tail cap second end 202 is larger in diameter than the through hole; wherein, a plurality of pointed positioning structures are arranged on one surface of the compression gasket 300, and the pointed positioning structures face the screw head 101 direction after the tail cap 200 is connected with the screw tail 101. Specifically, in the connection process, when the tail cap 200 is screwed in, the compression washer 300 is pressed, so that the pointed positioning structure on the compression washer 300 is inserted into the to-be-connected component, thereby playing a role in fixing, and when the to-be-connected component is expected to move relative to each other later, the risk that the bidirectional locking nut system loosens or falls can be reduced.

In one embodiment, the main screw 100 may be centrally provided with a guide through hole 400 therethrough.

In one embodiment, the guide through-hole 400 may be a circular through-hole for passing a guide pin. Illustratively, the guide needle may be a kirschner guide needle, but is not limited thereto.

In one embodiment, as shown in fig. 2 and 4, the tail cap 200 and the screw tail 102 may be threaded or embedded. Specifically, the tail cap 200 and the screw tail portion 102 may be in one of a threaded connection and an embedded connection, when the tail cap 200 and the screw tail portion 102 are in a threaded connection, the screw tail portion 102 is provided with an external thread having a direction the same as or opposite to that of the external thread of the screw head 101, and a hole in the first end 201 of the tail cap is internally provided with an internal thread adapted to the external thread of the screw tail portion 102; of course, the tail cap 200 and the screw tail 102 may be connected in other manners, and are not limited in particular.

In one embodiment, the side wall of the main screw 100 may be provided with at least one stress relief groove 500 therethrough. The stress relief groove 500 is used for relieving stress on two to-be-connected members, and the stress relief groove 500 may be provided in plurality, and is not particularly limited herein.

In one embodiment, the first and second mounting holes may be one of a hexagon socket hole, a quincunx hole, a cross hole, and a hole, but is not limited thereto.

In one embodiment, the tail cap second end 202 is a frustum structure or a spherical structure or a hemispherical structure, although not limited thereto.

In one embodiment, the screw head 101 may be provided with a chip structure 600 on the external thread. Specifically, the chip structure 600 may be a spiral chip groove or a convex chip groove, but is not limited thereto. The chip structure 600 enables chips to be smoothly discharged during cutting, accumulated cutting edges are not easy to form during cutting, the temperature of the cutting edge is relatively low, but stress concentration is easy to appear on the front cutting edge, so that the chip structure is suitable for cutting brittle materials.

In one embodiment, the top end of the screw head 101 is a pointed structure or a frustum structure, but is not limited thereto.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects:

the bidirectional locking screw cap system adopts the design of the split structure of the main screw 100 and the tail cap 200, when the bidirectional locking screw cap system needs to be taken out, the tail cap 200 can be taken out firstly by screwing the tail cap 200, and then the main screw 100 is taken out for dismounting, the connected workpiece does not need to be damaged, and when the bidirectional locking screw cap system is used in medical treatment, the damage to the bone of a patient can be reduced.

It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, and are used merely for convenience in describing embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.