Pedicle screw-rod system for lifting reduction of spine centrum

Abstract

The pedicle screw-rod system comprises a screw stand column, the upper end of the screw stand column is fixedly connected with a screw fixing cap, the outer end of the screw fixing cap is fixedly connected with an inner concave arc ring, the outer end of the inner concave arc ring is provided with a plurality of spherical open holes, the inner end of the screw stand column is provided with a hollow inner groove, and the inner end of the hollow inner groove is provided with a plurality of spherical open holes. The lower inner wall of the hollow inner groove is fixedly connected with an inner plug column, the outer end of the inner plug column is fixedly connected with a plurality of temperature sensing deformation strips, and the ends, away from the inner plug column, of the temperature sensing deformation strips are fixedly connected with absorbable outer ring balls. Along with the change of the temperature in the body of a patient, the temperature-sensing deformation strip can extend outwards, the medical medicament filled in the outer ring ball can be absorbed and gradually diffused to the perforated affected part generated by the screw stand column, the discomfort of the affected part can be relieved, the recovery of the affected part can be accelerated, and the treatment effect of the screw stand column on the vertebra affected part is better.

Description

Technical Field

[0001] The utility model relates to a pedicle screw-rod system for spinal vertebral body lifting and reduction, belonging to the technical field of medical instruments. Background Art

[0002] Pedicle screw-rod is an instrument used for fixation in spinal surgery to restore the spinal sequence and maintain spinal stability. For patients with spinal fractures, spinal instability, and scoliosis, pedicle screw internal fixation is a very important part. It is also often used in the surgery of patients with intervertebral disc herniation. Some pedicle screws are never removed after surgery, while some can be removed.

[0003] A pedicle screw-rod system for spinal vertebral body lifting and reduction with Chinese patent number CN110811801A includes pedicle screws, rods, a reduction extension sleeve, a rod pressing sleeve, and a rod pressing wrench that cooperate with the pedicle screws. The pedicle screw includes an integrally formed screw head and a screw seat. U-shaped grooves are formed by upward extension on both sides of the screw seat. By rotating the rod pressing wrench to abut against the rod pressing sleeve to drive the rod to the bottom of the U-shaped groove.

[0004] However, in the treatment process of the existing pedicle screw-rod for spinal vertebral body lifting and reduction, for the affected area with an opening, the wound surface is relatively deep. After suturing, it is not convenient to apply medicine to the affected area for adjuvant treatment, which is not conducive to ensuring the treatment effect of the screw column on the spinal bone affected area.

[0005] Therefore, a pedicle screw-rod system for spinal vertebral body lifting and reduction is proposed. Content of the Utility Model

[0006] In view of this, the utility model provides a pedicle screw-rod system for spinal vertebral body lifting and reduction to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the utility model is realized as follows: A pedicle screw-rod system for spinal vertebral body lifting and reduction includes a screw column. The upper end of the screw column is fixedly connected with a screw fixing cap. The outer end of the screw fixing cap is fixedly connected with an inner concave arc ring. A plurality of spherical openings are arranged at the outer end of the inner concave arc ring. A hollow inner groove is arranged at the inner end of the screw column. An inner plug column is fixedly connected to the lower inner wall of the hollow inner groove. A plurality of temperature-sensitive deformation strips are fixedly connected to the outer end of the inner plug column. One end of the temperature-sensitive deformation strip far from the inner plug column is fixedly connected with an absorbable outer ring ball.

[0008] Further preferably, the plurality of spherical openings are arranged in an annular equidistant manner, and the plurality of temperature-sensitive deformation strips are respectively located at the outer four-corner positions of the inner plug column.

[0009] Further preferably, a plurality of absorbable outer spherical balls penetrate through the outside of the corresponding spherical openings, and a number of medical agents are filled at the inner ends of the absorbable outer spherical balls.

[0010] Further preferably, a through hole is provided at the upper end of the hollow inner groove, and the inner plug column penetrates into the hollow inner groove through the through hole.

[0011] Further preferably, a clamping inner hole is provided at the upper end of the screw column, and a screw tool is externally connected to the clamping inner hole.

[0012] Further preferably, the screw column includes a first threaded column, and a second threaded column is fixedly connected to the lower end of the first threaded column.

[0013] Further preferably, a plurality of anti - detachment barbs are fixedly connected to the outer end of the first threaded column, and the screw column penetrates into the spinal vertebra position.

[0014] Due to the adoption of the above - mentioned technical solutions in the embodiments of the present utility model, it has the following advantages:

[0015] 1. In this solution, after the screw tool is docked with the screw fixing cap, the entire screw column is screwed into the spinal vertebra position to fix the spinal vertebra position and maintain the stability of the spinal vertebra position. Before the screw column is used, the inner plug can be inserted into the through hole and then into the lower side position of the hollow inner groove by using tweezers. The inner plug is initially stored in a freezer at low temperature. After the inner plug follows the screw column into the patient's body, with the temperature change in the patient's body, the temperature - sensitive deformation strip initially in a bent state can extend outwards. The extended temperature - sensitive deformation strip can push the absorbable outer spherical ball out of the hollow inner groove along the spherical opening, causing the absorbable outer spherical ball to gradually decompose, and the medical agent filled in the absorbable outer spherical ball gradually diffuses to the affected area of the opening generated by the screw column, which is beneficial to reducing the discomfort of the affected area, assisting the affected area to recover faster, and making the treatment effect of the screw column on the affected area of the spinal vertebra position better.

[0016] 2. At the same time, a plurality of anti - detachment barbs are arranged outside the first threaded column. The anti - detachment barbs can make the connection points between the screw column and the inner wall of the spinal vertebra position hole tighter, and it is not easy to produce displacement and loosening phenomena, making the installation state of the screw column more stable.

[0017] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above - described illustrative aspects, embodiments and features, further aspects, embodiments and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 Axonometric structure diagram of the screw column of the present utility model;

[0020] Figure 2 Axonometric structure diagram of the screw retaining cap of the present utility model;

[0021] Figure 3 Internal structure diagram of the hollow inner groove of the present utility model;

[0022] Figure 4 Amplified structure diagram of the absorbable outer ring ball of the present utility model.

[0023] Reference numerals: 1, screw column; 2, screw retaining cap; 3, engaging inner hole; 4, concave arc ring; 5, first threaded column; 7, anti - detachment barb; 8, through inner hole; 9, hollow inner groove; 10, inner plug column; 11, temperature - sensitive deformation strip; 12, absorbable outer ring ball; 13, spherical opening; 14, second threaded column. Detailed implementation manners

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0025] The following will detail the embodiments of the present utility model with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] As Figures 1-4 shown, the embodiment of the present utility model provides a pedicle screw - rod system for spinal vertebral body lifting and reduction, including a screw column 1. The upper end of the screw column 1 is fixedly connected with a screw retaining cap 2. The outer end of the screw retaining cap 2 is fixedly connected with a concave arc ring 4. A plurality of spherical openings 13 are opened at the outer end of the concave arc ring 4. The inner end of the screw column 1 is provided with a hollow inner groove 9. The lower inner wall of the hollow inner groove 9 is fixedly connected with an inner plug column 10. The outer end of the inner plug column 10 is fixedly connected with a plurality of temperature - sensitive deformation strips 11. One end of the temperature - sensitive deformation strip 11 far from the inner plug column 10 is fixedly connected with an absorbable outer ring ball 12.

[0028] The multiple spherical openings 13 are arranged at equal intervals in a ring shape. The multiple temperature-sensitive deformation strips 11 are respectively located at the four outer corner positions of the inner plug column 10. The multiple absorbable outer balls 12 penetrate through the outside of the corresponding spherical openings 13. The inner ends of the absorbable outer balls 12 are filled with a number of medical agents. A through hole 8 is opened at the upper end of the hollow inner groove 9. The inner plug column 10 penetrates through the through hole 8 and into the hollow inner groove 9.

[0029] Embodiment 2

[0030] In one embodiment, a clamping inner hole 3 is opened at the upper end of the screw column 1. The clamping inner hole 3 is externally connected to a screw tool. The screw column 1 includes a first threaded column 5. The lower end of the first threaded column 5 is fixedly connected to a second threaded column 14.

[0031] A plurality of anti-loosening barbs 7 are fixedly connected to the outer end of the first threaded column 5. The screw column 1 penetrates into the spinal vertebra position.

[0032] When the present utility model is in operation: In this solution, after the screw tool is docked with the screw fixing cap 2, the entire screw column 1 is screwed into the spinal vertebra position to fix the spinal vertebra position and maintain the stability of the spinal vertebra position. Before the screw column 1 is used, the inner plug column 10 can be inserted into the through hole 8 through the forceps and the inner plug column 10 is inserted into the lower side position of the hollow inner groove 9. The inner plug column 10 is initially stored in a freezer for low-temperature preservation. After the inner plug column 10 follows the screw column 1 into the patient's body, with the temperature change in the patient's body, the temperature-sensitive deformation strips 11 initially in a bent state can extend outwards. The extended temperature-sensitive deformation strips 11 can push the absorbable outer balls 12 out of the hollow inner groove 9 along the spherical openings 13, causing the absorbable outer balls 12 to gradually decompose, and the medical agents filled in the absorbable outer balls 12 gradually diffuse to the affected area of the opening generated by the screw column 1, which is beneficial to reducing the discomfort of the affected area, assisting the affected area to recover faster, making the treatment effect of the screw column 1 on the affected area of the spinal vertebra better. At the same time, a plurality of anti-loosening barbs 7 are arranged outside the first threaded column 5. The anti-loosening barbs 7 can make the connection points between the screw column 1 and the inner wall of the spinal vertebra position hole more compact, not easily generating displacement and loosening phenomena, and making the installation state of the screw column 1 more stable.

[0033] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A pedicle screw-rod system for spinal vertebral body lifting and reduction, characterized in that: It includes a screw column (1), the upper end of the screw column (1) is fixedly connected with a screw cap (2), the outer end of the screw cap (2) is fixedly connected with a concave arc ring (4), a plurality of spherical openings (13) are arranged at the outer end of the concave arc ring (4), a hollow inner groove (9) is arranged at the inner end of the screw column (1), an inner plug column (10) is fixedly connected to the lower inner wall of the hollow inner groove (9), a plurality of temperature-sensitive deformation strips (11) are fixedly connected to the outer end of the inner plug column (10), and an absorbable outer sphere (12) is fixedly connected to the end of the temperature-sensitive deformation strip (11) far away from the inner plug column (10).

2. The pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 1, wherein: The plurality of spherical openings (13) are arranged in an annular equidistant manner, and the plurality of temperature-sensitive deformation strips (11) are respectively located at the outer four-corner positions of the inner plug column (10).

3. A pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 1, characterized in that: The plurality of absorbable outer spheres (12) penetrate through the outside of the corresponding spherical openings (13), and a number of medical agents are filled in the inner ends of the absorbable outer spheres (12).

4. A pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 1, characterized in that: A through hole (8) is arranged at the upper end of the hollow inner groove (9), and the inner plug column (10) penetrates into the hollow inner groove (9) through the through hole (8).

5. A pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 1, characterized in that: A clamping inner hole (3) is arranged at the upper end of the screw column (1), and a screw tool is externally connected to the clamping inner hole (3).

6. The pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 1, characterized in that: The screw column (1) includes a first threaded column (5), and the lower end of the first threaded column (5) is fixedly connected with a second threaded column (14).

7. A pedicle screw-rod system for spinal vertebral body lifting and reduction according to claim 6, characterized in that: A plurality of anti-detachment barbs (7) are fixedly connected to the outer end of the first threaded column (5), and the screw column (1) penetrates to the spinal bone position.

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