CN215079518U

CN215079518U - Bidirectional compression screw assembly

Info

Publication number: CN215079518U
Application number: CN202121638044.9U
Authority: CN
Inventors: 丁细龙
Original assignee: Shenzhen Senyi Precision Hardware Co ltd
Current assignee: Shenzhen Senyi Precision Hardware Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-12-10
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a two-way compression screw subassembly, which comprises a screw, the upper end internal thread has been seted up to the upper end of screw inside, the internal thread connection in upper end has adjusting screw, adjusting screw's surface cover is equipped with the upper end gasket, adjusting screw's the fixed turning block that is equipped with of one end, the outer end of turning block is equipped with interior hexagonal hole, the lower extreme internal thread has been seted up to the lower extreme inside of screw, the internal thread connection in lower extreme has the connecting rod, the fixed rotatory piece that is equipped with in outer end of connecting rod, the outside of rotatory piece is equipped with top, the lower extreme surface of screw is equipped with the lower extreme gasket, the lower extreme surface of screw is equipped with the lower extreme external screw thread. Through this design, under the effect of lower extreme internal thread, connecting rod, rotatory piece, top to carry out convenient dismantlement to the top of screw, top touches skin tissue's top in avoiding orthopedics postoperative to resume, thereby avoided patient's discomfort to and protect skin tissue.

Description

Bidirectional compression screw assembly

Technical Field

The utility model belongs to the technical field of medical apparatus of orthopedics, concretely relates to two-way pressure screw subassembly.

Background

The screw is closely occluded with the bone by the screw thread, thereby achieving the purpose of fixing the fracture. If the device can be properly applied, the reduction and internal fixation effects can be well maintained on certain fractures. The incision of the operation is small, and the stripped periosteum is limited, so the operation has the advantages of small damage to soft tissues and bone tissues, small foreign bodies and simple operation; but the fixing force is limited, and the fixing effect is poor in osteoporotic fracture, if the fixation is carried out by using a common screw, enough external fixation is required until the fracture is healed

But current screw mobile jib all is equipped with the thread circle, it is recovered after the orthopedics postoperative, when taking the screw, can take away many bone fragments, thereby cause patient's secondary injury, and the top inconvenient dismantlement of current screw, it is internal to fix the bone with the screw insertion patient, but it is top in the postoperative resumes, it touches to the skin tissue of patient to be difficult to exempt from to push up, thereby cause patient's discomfort, and the length of screw can not be adjusted, can not effectively use according to the demand.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a two-way pressurization screw subassembly solves the top inconvenient dismantlement of screw to and the length of screw can not be adjusted, can not be according to the problem of demand effective use.

In order to solve the technical problem, the utility model provides a following technical scheme: the bidirectional compression screw assembly comprises a screw, an upper end internal thread is formed in the upper end of the screw, an adjusting screw is connected to the internal thread of the upper end through internal threads, an upper end gasket is sleeved on the outer surface of the adjusting screw, a rotating block is fixedly arranged at one end of the adjusting screw, an inner hexagonal hole is formed in the outer end of the rotating block, a lower end internal thread is formed in the lower end of the screw, a connecting rod is connected to the internal thread of the lower end through internal threads, a rotating block is fixedly arranged at the outer end of the connecting rod, a tip is arranged on the outer side of the rotating block, a lower end gasket is arranged on the outer surface of the lower end of the screw, a lower end external thread is arranged on the outer surface of the lower end of the screw, and a hexagon nut is connected to the outer surface of the lower end of the screw through threads.

As an optimal technical scheme of the utility model, the outer diameter of lower extreme gasket and upper end gasket is the same, the inside diameter of lower extreme gasket and the outer diameter looks adaptation of lower extreme external screw thread, the inside diameter of upper end gasket and adjusting screw's outside diameter looks adaptation.

As an optimized technical scheme of the utility model, the external diameter of turning block is greater than the inside diameter of upper end gasket.

As a preferred technical solution of the present invention, the outer width of the rotating block is smaller than the cross-sectional diameter of the screw.

As an optimized technical proposal of the utility model, the internal thread of the lower end is provided with a medical rubber plug.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

1. through the design, under the action of the internal thread at the lower end, the connecting rod, the rotating block and the tip, the tip of the screw can be conveniently detached, and the tip is prevented from contacting skin tissues in recovery after an orthopedic surgery, so that discomfort of a patient is avoided, and the skin tissues are protected;

2. through this design, under upper end internal thread, adjusting screw's effect to the length of screw carries out the freedom regulation, thereby satisfies user's effective user demand, and to the smooth setting of screw, when having avoided the bone to take the screw after recovered, causes the problem of secondary injury.

Drawings

Fig. 1 is one of the schematic three-dimensional structures of the present invention;

fig. 2 is a second schematic perspective view of the present invention;

FIG. 3 is a schematic view of the cross-sectional three-dimensional structure of the upper end of the screw according to the present invention;

fig. 4 is a schematic sectional three-dimensional structure view of the lower end of the screw of the present invention.

Wherein: 1. a screw; 2. an upper end internal thread; 3. adjusting the screw rod; 4. an upper end gasket; 5. rotating the block; 6. an inner hexagonal hole; 7. a lower end external thread; 8. a lower end gasket; 9. a hexagonal nut; 10. the lower end is provided with an internal thread; 11. a connecting rod; 12. rotating the block; 13. and (4) a tip.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-4, the bidirectional compression screw assembly includes a screw 1, an upper internal thread 2 is formed inside an upper end of the screw 1, an adjusting screw 3 is connected to an internal thread of the upper internal thread 2, an upper gasket 4 is sleeved on an outer surface of the adjusting screw 3, a rotating block 5 is fixedly arranged at one end of the adjusting screw 3, an inner hexagonal hole 6 is formed at an outer end of the rotating block 5, a lower internal thread 10 is formed inside a lower end of the screw 1, a connecting rod 11 is connected to an internal thread of the lower internal thread 10, a rotating block 12 is fixedly arranged at an outer end of the connecting rod 11, an apex 13 is arranged outside the rotating block 12, a lower gasket 8 is arranged on an outer surface of a lower end of the screw 1, a lower external thread 7 is formed on an outer surface of a lower end of the screw 1, and a hexagon nut 9 is connected to an outer surface of a lower end of the screw 1;

when a patient is subjected to bone fixation, a screw 1 is inserted into a bone hole which is rotated in advance, the screw 1 can conveniently pass through the bone hole through a tip 13, after the screw 1 completely penetrates through the bone hole, a rotating block 12 is rotated, so that the rotating block 12 drives a connecting rod 11 to rotate, as the connecting rod 11 is in threaded connection with a lower-end internal thread 10, when the connecting rod 11 rotates, the connecting rod 11 is separated from the lower-end internal thread 10, so that the tip 13 is detached from the lower end of the screw 1, and as the hexagon nut 9 is rotated, as the hexagon nut 9 is in threaded connection with a lower-end external thread 7, when the hexagon nut 9 rotates, the hexagon nut 9 pushes a lower-end gasket 8 to be fixed with one side of the bone of the patient, and as the rotating block 5 on the other side of the bone rotates, and as the adjusting screw rod 3 is in threaded connection with an upper-end internal thread 2, the adjusting screw rod 3 is driven to rotate when the rotating block 5 rotates, make adjusting screw 3 remove inside 2 at upper end internal threads when adjusting screw 3 rotates, promote upper end gasket 4 and remove when turning block 5 removes, make upper end gasket 4 fixed with patient's bone, through this operation, so as to fix patient's bone, and under this operation, so as to adjust the length of screw 1, thereby satisfy user's effective use demand, and to screw 1 smooth setting, when having avoided taking screw 1 after the bone is recovered, cause the problem of secondary damage, and through this design, so as to carry out convenient dismantlement to screw 1's top 13, top 13 touches skin tissue in avoiding orthopedics postoperative to resume, thereby patient's discomfort has been avoided, and skin tissue is protected.

In other embodiments, the outer diameters of the lower end gasket 8 and the upper end gasket 4 are the same, the inner diameter of the lower end gasket 8 is matched with the outer diameter of the lower end external thread 7, and the inner diameter of the upper end gasket 4 is matched with the outer diameter of the adjusting screw rod 3;

in other embodiments, the outside diameter of the turning block 5 is larger than the inside diameter of the upper end spacer 4; so that the turning block 5 presses the upper end spacer 4 to fix the screw 1 to the patient's bone.

In other embodiments, the outer width of the rotation block 12 is smaller than the cross-sectional diameter of the screw 1; so that the screw 1 can pass through the bone hole drilled by the patient, thereby avoiding the phenomenon of locking.

In other embodiments, the lower end internal thread 10 is provided with a medical rubber plug; through setting up medical rubber stopper to during the operation, dismantle back to apex 13, block up lower extreme internal thread 10 through medical rubber stopper, surface skin tissue gets into the inside of lower extreme internal thread 10.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Two-way compression screw subassembly, including screw (1), its characterized in that: an upper-end internal thread (2) is arranged inside the upper end of the screw (1), an adjusting screw rod (3) is connected with the internal thread of the upper-end internal thread (2), an upper end gasket (4) is sleeved on the outer surface of the adjusting screw rod (3), a rotating block (5) is fixedly arranged at one end of the adjusting screw rod (3), an inner hexagonal hole (6) is arranged at the outer end of the rotating block (5), a lower end internal thread (10) is arranged in the lower end of the screw (1), the internal thread of the lower internal thread (10) is connected with a connecting rod (11), the outer end of the connecting rod (11) is fixedly provided with a rotating block (12), the outer side of the rotating block (12) is provided with a tip (13), a lower end gasket (8) is arranged on the outer surface of the lower end of the screw (1), a lower end external thread (7) is arranged on the outer surface of the lower end of the screw (1), the outer surface of the lower end of the screw (1) is in threaded connection with a hexagonal nut (9).

2. The bi-directional compression screw assembly of claim 1, further comprising: the outer diameter of lower extreme gasket (8) and upper end gasket (4) is the same, the inside diameter of lower extreme gasket (8) and the outer diameter looks adaptation of lower extreme external screw thread (7), the inside diameter of upper end gasket (4) and adjusting screw (3) outside diameter looks adaptation.

3. The bi-directional compression screw assembly of claim 1, further comprising: the outer diameter of the rotating block (5) is larger than the inner diameter of the upper end gasket (4).

4. The bi-directional compression screw assembly of claim 1, further comprising: the outer width of the rotating block (12) is smaller than the cross-sectional diameter of the screw (1).

5. The bi-directional compression screw assembly of claim 1, further comprising: the lower end internal thread (10) is provided with a medical rubber plug.