CN218979338U - Novel U-shaped screw - Google Patents

Abstract

The application relates to the technical field of medical instruments, in particular to a novel U-shaped screw, which comprises a nail beam and a nail leg. The nail beam is connected with the nail leg, and the nail leg is provided with an anti-slip piece, and the anti-slip piece is used for increasing friction between the nail leg and bone tissue. The present application has the effect of reducing the likelihood of the staple becoming detached from within the bone tissue.

Description

Novel U-shaped screw

Technical Field

The application relates to the technical field of medical instruments, in particular to a novel U-shaped screw.

Background

At present, ligament injury and even ligament rupture are unavoidable for athletes or physical workers. Therefore, various means are required to repair or even reconstruct the tendon ligament to restore normal motor function of the human body. There are also a number of products on the market relating to tendon ligament repair including belt line anchors, belt loop titanium plates, interface nails, staples, etc. which meet most of the surgical needs.

For the related art in the above: when repairing tendon and ligament by using the staple, the problem that the staple is easy to separate from human bone tissue exists.

Disclosure of Invention

To reduce the likelihood of the staple becoming dislodged from the bone tissue, the present application provides a novel U-screw.

The application provides a novel U type screw adopts following technical scheme:

the utility model provides a novel U type screw, includes nail roof beam and nail leg, the nail roof beam with the nail leg is connected, be provided with anti-skidding piece on the nail leg, anti-skidding piece is used for increasing frictional force between nail leg and the bone tissue.

Through adopting above-mentioned technical scheme, the friction between nail leg and the bone tissue can be increased to the antiskid piece to reduce the possibility that U type screw breaks away from in the bone tissue, and then be favorable to fixing patient's bone tissue.

Optionally, the anti-skidding piece includes mounting panel and non-skid raised, the non-skid raised is followed the length direction of mounting panel sets up on the mounting panel, the mounting panel deviate from the non-skid raised one side with the nail leg is connected.

Through adopting above-mentioned technical scheme, when the nail leg is knocked into predetermined bone tissue, the slipknot can effectively increase the frictional force between nail leg and the bone tissue to the possibility that the nail leg breaks away from the bone tissue has been reached to the reduction.

Optionally, the non-slip raised is provided with an inclined plane, one end of the inclined plane away from the nail beam is connected with the mounting plate, and the other end of the inclined plane protrudes out of the mounting plate.

Through adopting above-mentioned technical scheme, the design of inclined plane can play the guide effect to the nail leg when the nail leg is knocked into predetermined bone tissue into to in being convenient for with nail leg nail into bone tissue.

Optionally, the threading hole has been run through on the nail roof beam, the direction of seting up of threading hole with the length direction of nail leg is parallel.

Through adopting above-mentioned technical scheme, can wear to establish suture or wire loop in the through wires hole to be convenient for carry out the ligature to patient's tendon ligament, and when using the nail roof beam direct oppression tendon ligament, the tendon ligament that the through wires hole covered is difficult for receiving excessive extrusion, makes the tendon ligament that is located through wires hole department can acquire more blood supplies from the bone face, and then is favorable to improving the tendon activity.

Optionally, the threading hole is provided with a plurality of.

Through adopting above-mentioned technical scheme, can wear to establish suture or wire loop in a plurality of through wires holes to be convenient for carry out the ligature to the tendon ligament.

Optionally, the spout has been seted up along self length direction to the nail roof beam, it is provided with the subassembly that slides to slide in the spout, the subassembly that slides is away from the one end of nail roof beam with the mounting panel is connected, the subassembly that slides is used for driving the mounting panel removes.

Through adopting above-mentioned technical scheme, the subassembly that slides can remove in the spout, and the subassembly that slides can drive the non-slip raised through the mounting panel and remove to the middle part direction that is close to the nail roof beam to be favorable to making the mounting panel drive the non-slip raised and break away from bone tissue, be convenient for U type screw break away from bone tissue to a certain extent, and then be favorable to dismantling U type screw on the bone tissue.

Optionally, the nail leg is last to have seted up the holding tank along self length direction, the holding tank with the spout intercommunication, the mounting panel slides and inserts establish in the holding tank.

Through adopting above-mentioned technical scheme, when dismantling the U type screw on the bone tissue, can utilize the mounting panel to drive the non-slip raised and slide to the holding tank in to reduce the possibility that the non-slip raised produces the interference to the dismantlement of U type screw to a certain extent, and then be favorable to improving the convenient degree of dismantling the U type screw on the bone tissue.

Optionally, be provided with the gag lever post on the inner wall of holding tank, the mounting panel deviates from the spacing groove has been seted up to one side of non-slip raised, the gag lever post is kept away from the one end of holding tank is inserted and is established in the spacing groove.

Through adopting above-mentioned technical scheme, the gag lever post inserts and establishes in the spacing inslot for the gag lever post can carry out spacingly to the mounting panel, thereby is favorable to reducing the mounting panel when taking place to slide in the holding tank, and the possibility that the skew appears in the mounting panel, and then is favorable to the mounting panel to normally slide in the holding tank.

Optionally, the subassembly that slides includes slider, elastic component and connecting block, the slider slides and inserts and establish in the spout, the elastic component sets up in the spout, the elastic component is located the slider with between the spout inner wall, the one end of connecting block with the slider is close to one side of holding tank is connected, the other end of connecting block with the mounting panel is connected.

Through adopting above-mentioned technical scheme, the slider passes through the connecting block and is connected with the mounting panel to be convenient for utilize the slider to drive the mounting panel and remove, and the elastic component is connected with the slider, make the elastic component promote the slider to initial position, and then be convenient for make the slider drive the mounting panel through the connecting block and return to normal position.

Optionally, the nail Liang Yuanli one side of nail leg runs through and has seted up the locking hole, the locking hole with the spout intercommunication, be provided with the retaining member in the locking hole, the slider deviates from one side of connecting block has been seted up the constant head tank, the retaining member passes the locking hole inserts and establishes in the constant head tank.

Through adopting above-mentioned technical scheme, the retaining member is inserted respectively and is established in locking hole and constant head tank for the retaining member can carry out spacingly to the slider, thereby is favorable to fixing the position of slider on the nail roof beam, and then is favorable to fixing the position of mounting panel through the slider.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the anti-skid piece is beneficial to increasing the friction force between the nail legs and the bone tissue, so that the possibility that the U-shaped screw is separated from the bone tissue is reduced;

2. through the mutual matching of the nail legs, the mounting plate, the nail beams, the limiting rods, the sliding blocks and the connecting blocks, the mounting plate can drive the anti-slip protrusions to slide into the accommodating grooves, so that the purpose of conveniently disassembling the U-shaped screws on bone tissues is achieved;

3. through the mutually supporting of retaining member and slider, be favorable to fixing the position of mounting panel to be favorable to reducing when U type screw is knocked into bone tissue, the non-slip raised atress drives the mounting panel and removes to the holding tank in, leads to the possibility that non-slip raised can't exert an effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the novel U-shaped screw of example 1 of the present application.

Fig. 2 is a schematic view of the direct compression of tendon ligaments by the nail beam in the novel U-shaped screw of example 1 of the present application.

Fig. 3 is a schematic view of a suture tendon ligament in a novel U-shaped screw of example 1 of the present application.

Fig. 4 is a schematic overall structure of the novel U-shaped screw of embodiment 2 of the present application.

Fig. 5 is a cross-sectional view of the novel U-screw of example 2 of the present application.

Reference numerals illustrate:

1. nailing the beam; 11. a threading hole; 12. a chute; 13. a locking hole; 14. a locking member; 2. nailing legs; 21. a receiving groove; 22. a limit rod; 3. an anti-slip member; 31. a slip preventing protrusion; 311. an inclined surface; 32. a mounting plate; 321. a limit groove; 4. a slip assembly; 41. a slide block; 411. a positioning groove; 42. an elastic member; 43. and (5) connecting a block.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a novel U-shaped screw.

Example 1

Referring to fig. 1, the novel U-shaped screw comprises a nail beam 1, a nail leg 2 and an anti-slip piece 3, wherein the nail beam 1 is fixedly connected with the nail leg 2. The anti-skid member 3 is provided on the leg 2, and the anti-skid member 3 is used to increase friction between the leg 2 and bone tissue.

Referring to fig. 1, the cross section of the nail beam 1 is in a trapezoid shape, a threading hole 11 is formed in the nail beam 1, the axis of the threading hole 11 is parallel to the length direction of the nail leg 2, and a suture or a wire loop can be threaded in the threading hole 11.

Referring to fig. 1, a plurality of threading holes 11 are provided, three threading holes 11 are provided in this embodiment, and three threading holes 11 are uniformly distributed on the nail beam 1 at intervals. The three threading holes 11 are matched with each other, and can provide threading positions for one or two groups of sutures, so that the tendon ligaments of a patient can be conveniently bound.

Referring to fig. 1 and 2, when it is required to directly press and fix a damaged tendon ligament of a patient using a U-shaped screw, the nail beam 1 is directly pressed on the tendon ligament. At this time, the soft tissue covered by the three threading holes 11 is not easy to excessively squeeze, so that the soft tissue can obtain more blood supply from the bone surface, thereby being beneficial to improving the activity of the tendon ligament and being beneficial to the healing of the tendon ligament to a certain extent.

Referring to fig. 1 and 3, when the tendon ligament of the patient needs to be fixed using the suture, the suture is first inserted into the threading hole 11 as needed. And then the U-shaped screw is knocked into bone tissue, at the moment, the tendon ligament is positioned on one side of the nail beam 1, which is away from the nail leg 2, and finally the tendon ligament is sutured and fixed by using a suture, so that the tendon ligament can be healed conveniently.

Referring to fig. 1, the nail legs 2 are fixedly connected to one side of the nail beam 1, which is small in size, the nail legs 2 may be provided in plurality, two nail legs 2 are provided in this embodiment, and the two nail legs 2 are symmetrically distributed on the same side of the nail beam 1.

Referring to fig. 1, the size of the nail leg 2 is gradually reduced in a direction away from the nail beam 1, and one end of the nail leg 2 away from the nail beam 1 is provided in a pointed shape, so that the nail leg 2 is conveniently knocked into bone tissue.

Referring to fig. 1, the anti-skid member 3 may be provided in various types, and the anti-skid member 3 in this embodiment includes an anti-skid protrusion 31. The anti-slip protrusions 31 are fixedly connected to the outer wall of the nail leg 2, and the anti-slip protrusions 31 are located on one side of the nail leg 2 away from the other nail leg 2.

Referring to fig. 1, the anti-slip protrusion 31 is provided with an inclined surface 311, one end of the inclined surface 311 away from the nail beam 1 is fixedly connected with the nail leg 2, and one end of the inclined surface 311 close to the nail beam 1 protrudes out of the nail leg 2, so that the inclined surface 311 can play a guiding role on the nail leg 2, and the nail leg 2 is conveniently knocked into bone tissues.

Referring to fig. 1, a plurality of anti-slip protrusions 31 are provided, and the plurality of anti-slip protrusions 31 are uniformly distributed along the length direction of the mounting plate 32, thereby further playing a role in limiting and guiding the staple legs 2.

The novel U-shaped screw of embodiment 1 is beneficial to increasing the friction force between the nail leg 2 and bone tissue through the arrangement of the anti-slip boss 31, thereby achieving the purpose of reducing the possibility of the U-shaped screw separating from the bone tissue.

Example 2

Referring to fig. 4 and 5, embodiment 2 differs from embodiment 1 in that: the nail beam 1 is internally provided with a sliding component 4.

Referring to fig. 5, the nail beam 1 is provided with a plurality of sliding grooves 12 along its length direction, two sliding grooves 12 in this embodiment are provided, and the two sliding grooves 12 are symmetrically distributed on the nail beam 1.

Referring to fig. 5, the shapes of the sliding grooves 12 can be various, in this embodiment, the sliding grooves 12 are T-shaped, and one small-sized side of the sliding grooves 12 is disposed through the side of the nail beam 1 near the nail leg 2, and the other large-sized side of the sliding grooves 12 is disposed through the end face of the nail beam 1.

Referring to fig. 5, the sliding component 4 may be provided in various ways, and the sliding component 4 in this embodiment includes a slider 41, an elastic member 42 and a connection block 43. The sliding block 41 is slidably inserted into the sliding groove 12, and a positioning slot 411 is formed on one side of the sliding block 41 away from the nail leg 2.

Referring to fig. 5, a locking hole 13 is formed in one side of the nail beam 1 away from the nail leg 2 in a penetrating manner, the axis of the locking hole 13 is parallel to the axis of the threading hole 11, and the locking hole 13 is communicated with the sliding groove 12.

Referring to fig. 5, a locking member 14 is inserted into the locking hole 13, and one end of the locking member 14, which is close to the nail beam 1, can be inserted into the chute 12 through the locking hole 13. The locking member 14 can be provided in a variety of ways, and the locking member 14 in this embodiment is a locking bolt.

Referring to fig. 5, when the slider 41 approaches the end surface of the nail beam 1, the locking member 14 can be inserted into the positioning slot 411 through the locking hole 13, thereby facilitating the fixing of the position of the slider 41.

Referring to fig. 5, the elastic member 42 may be provided in various types, and the elastic member 42 in this embodiment is a spring.

Referring to fig. 5, the elastic member 42 is disposed in the chute 12, and one end of the elastic member 42 is fixedly connected with one end of the slider 41 close to the chute 12, and the other end of the elastic member 42 is fixedly connected to the bottom wall of the chute 12, so that the elastic member 42 can apply a pushing force to the slider 41 away from the chute 12, and further facilitate pushing the slider 41 to move by using the elastic member 42.

Referring to fig. 5, the connection block 43 is fixedly connected to a side of the slider 41 near the leg 2, and an end of the connection block 43 remote from the slider 41 is fixedly connected to the anti-slip member 3.

Referring to fig. 5, the leg 2 is provided with a receiving groove 21 extending in the longitudinal direction thereof, the receiving groove 21 communicates with the chute 12, and an end of the connecting block 43 remote from the slider 41 is inserted into the receiving groove 21.

Referring to fig. 5, a limit rod 22 is fixedly connected to the inner wall of the accommodating groove 21, and the length direction of the limit rod 22 is parallel to the side wall of the nail beam 1, which is close to the nail leg 2. The plurality of limit rods 22 are provided, and the plurality of limit rods 22 are arranged on the inner wall of the accommodating groove 21 at uniform intervals along the length direction of the staple legs 2.

Referring to fig. 5, the anti-skid member 3 further includes a mounting plate 32, the mounting plate 32 being sized to accommodate the size of the receiving groove 21 such that the mounting plate 32 can block the receiving groove 21 and the mounting plate 32 can slide within the receiving groove 21.

Referring to fig. 5, the side of the mounting plate 32 facing away from the receiving groove 21 is fixedly coupled to the stud 31 such that the mounting plate 32 is capable of sliding the stud 31 within the receiving groove 21.

Referring to fig. 5, a limiting groove 321 is formed on one side of the mounting plate 32 facing away from the anti-slip protrusion 31, the number of the limiting grooves 321 is the same as that of the limiting rods 22, and the plurality of limiting grooves 321 are uniformly and indirectly formed on the mounting plate 32 along the length direction of the mounting plate 32.

Referring to fig. 5, when the mounting plate 32 is slidably inserted into the receiving groove 21, the stopper rod 22 can be inserted into the stopper groove 321, thereby restricting the mounting plate 32 such that the mounting plate 32 is not easily inclined in the receiving groove 21.

Referring to fig. 5, the end of the connecting block 43 away from the slider 41 is fixedly connected with the end of the mounting plate 32 near the nail beam 1, so that the slider 41 can drive the mounting plate 32 to move through the connecting block 43 when the slider 41 slides in the chute 12.

Referring to fig. 5, when the U-shaped screw needs to be driven into the bone tissue, the slider 41 is moved to the end face close to the nail beam 1, and simultaneously the slider 41 drives the anti-slip protrusion 31 to move out of the accommodating groove 21 through the connecting block 43 and the mounting plate 32 in sequence. The locking member 14 is inserted into the positioning slot 411 through the locking hole 13, and at this time, the position of the sliding block 41 is fixed, so that the position of the anti-sliding protrusion 31 is also fixed, and when the U-shaped screw is knocked into bone tissue, the anti-sliding protrusion 31 is not easy to move into the accommodating slot 21, and further the friction force between the U-shaped screw and the bone tissue can be increased by the anti-sliding protrusion 31.

The implementation principle of the novel U-shaped screw in the embodiment 2 of the application is as follows: when the U-shaped screw needs to be taken out from the bone tissue, the locking piece 14 is taken out from the positioning groove 411, the sliding block 41 is pushed to move to a position close to the nail beam 1, the sliding block 41 drives the mounting plate 32 to move through the connecting block 43, and the mounting plate 32 drives the anti-skid boss 31 to move into the accommodating groove 21, so that the anti-skid boss 31 is completely inserted into the accommodating groove 21. At this time, the anti-slip protrusions 31 do not exert the effect of increasing the friction force between the legs 2 and the bone tissue on the U-shaped screw, thereby achieving the purpose of facilitating the removal of the U-shaped screw from the bone tissue.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a novel U type screw which characterized in that: including nail roof beam (1) and nail leg (2), nail roof beam (1) with nail leg (2) are connected, be provided with antiskid piece (3) on nail leg (2), antiskid piece (3) are used for increasing the frictional force between nail leg (2) and the bone tissue.

2. The novel U-shaped screw of claim 1 wherein: the anti-slip part (3) comprises a mounting plate (32) and anti-slip protrusions (31), wherein the anti-slip protrusions (31) are arranged on the mounting plate (32) along the length direction of the mounting plate (32), and one side, deviating from the anti-slip protrusions (31), of the mounting plate (32) is connected with the nail legs (2).

3. The novel U-shaped screw of claim 2 wherein: the anti-slip boss (31) is provided with an inclined surface (311), one end of the inclined surface (311) away from the nail beam (1) is connected with the mounting plate (32), and the other end of the inclined surface (311) protrudes out of the mounting plate (32).

4. The novel U-shaped screw of claim 1 wherein: the nail beam (1) is provided with a threading hole (11) in a penetrating mode, and the opening direction of the threading hole (11) is parallel to the length direction of the nail leg (2).

5. The novel U-shaped screw of claim 4 wherein: the threading holes (11) are formed in a plurality of ways.

6. The novel U-shaped screw of claim 2 wherein: the nail beam (1) is provided with a sliding groove (12) along the length direction of the nail beam, the sliding groove (12) is internally and slidably provided with a sliding component (4), one end, away from the nail beam (1), of the sliding component (4) is connected with the mounting plate (32), and the sliding component (4) is used for driving the mounting plate (32) to move.

7. The novel U-shaped screw of claim 6 wherein: the nail leg (2) is provided with a containing groove (21) along the length direction of the nail leg, the containing groove (21) is communicated with the sliding groove (12), and the mounting plate (32) is slidably inserted into the containing groove (21).

8. The novel U-shaped screw of claim 7 wherein: be provided with gag lever post (22) on the inner wall of holding tank (21), mounting panel (32) deviate from limit groove (321) have been seted up to one side of non-slip raised (31), gag lever post (22) are kept away from the one end of holding tank (21) is inserted and is established in limit groove (321).

9. The novel U-shaped screw of claim 7 wherein: the sliding assembly (4) comprises a sliding block (41), an elastic piece (42) and a connecting block (43), wherein the sliding block (41) is inserted in the sliding groove (12) in a sliding manner, the elastic piece (42) is arranged in the sliding groove (12), the elastic piece (42) is located between the sliding block (41) and the inner wall of the sliding groove (12), one end of the connecting block (43) is connected with one side, close to the accommodating groove (21), of the sliding block (41), and the other end of the connecting block (43) is connected with the mounting plate (32).

10. The novel U-shaped screw of claim 9 wherein: the nail beam (1) is far away from one side of the nail leg (2) and penetrates through the locking hole (13), the locking hole (13) is communicated with the sliding groove (12), a locking piece (14) is arranged in the locking hole (13), a positioning groove (411) is formed in one side, deviating from the connecting block (43), of the sliding block (41), and the locking piece (14) penetrates through the locking hole (13) and is inserted into the positioning groove (411).

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