PVC (polyvinyl chloride) surgical screw for osteoporosis patient with vertebral pedicle fracture and using method

Abstract

The invention relates to the technical field of surgical instruments, and discloses a pvp surgical screw for osteoporosis patients with vertebral pedicle fracture, which comprises a nut head, a screw body part is arranged at the bottom of the nut head, the screw body part comprises an outer protective shell and a screwing-in section, and an expansion area is arranged between the outer protective shell and the screwing-in section. A cleaning ring is arranged in the expansion area, the center position of the cleaning ring coincides with the center position of the screwing-in section, and the inner wall of the outer protective shell is fixedly connected with a positioning guide rail. The adsorption layer faces the position where residues are generated, normal saline is combined for gentle flushing, a new cleaning ring can be taken from the second containing box, the cleaning ring is pulled out of the positioning water injection sliding block and placed in the first containing box, and the new cleaning ring is inserted into the positioning water injection sliding block. And the implantation position tends to be in a clean state, so that an operation on an osteoporosis patient is facilitated, and the implantation effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, in particular to a PVP surgical screw for osteoporosis patients with pedicle fracture. Background Art

[0002] The pedicle is a part of the vertebral arch, starting from the posterior and superior part of the vertebral body, short and thin. The pedicle is a component of the intervertebral foramen. Osteoporosis fixation screws are special screws used for fracture repair or bone support in osteoporosis patients, providing reliable support and fixation effects. In osteoporosis fixation screw surgery, screws specially designed for osteoporosis patients are selected. Usually, these screws have a wider diameter and better fixation performance to adapt to the patient's bone condition. Bone density assessment is required to understand the degree of osteoporosis and adjust the surgical plan based on the assessment results. Under the guidance of X-rays or other images, the doctor will monitor the implantation position of the screws in real time. During the entire operation, the expansion of the bone cement is monitored in real time through imaging equipment. The dispersion situation and the position of the screws can ensure the effectiveness and safety of the operation. Normal saline can be used to clean the surgical area, remove bone fragments, bone chips and other impurities produced during the operation, and ensure the cleanliness of the surgical area. Flushing the surgical area can help prevent infection and reduce the risk of postoperative complications. At the same time, it can provide a clean working environment for subsequent implantation and fixation to ensure the smooth progress of the surgical operation. It is usually flushed in a small flow and low pressure manner to ensure gentle and effective cleaning of the surgical area. When a single screw is implanted directly into the vertebra, patients with osteoporosis are easily affected by the surrounding environment during the implantation process. The implantation effect, therefore, is required for osteoporotic patients with pedicle fractures. Summary of the invention

[0003] The purpose of the present invention is to provide a PVP surgical screw for osteoporosis patients with pedicle fractures, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues. By limiting the position during the implantation process, the implantation position is kept in a clean state, which is beneficial to the operation on osteoporosis patients and improves the implantation effect, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A PVP surgical screw for osteoporosis patients with pedicle fracture, comprising a nut head, a screw body part at the bottom of the nut head, the screw body part comprising an outer protective shell and a screw-in section, an expansion area is provided between the outer protective shell and the screw-in section, a cleaning ring is provided in the expansion area, the center position of the cleaning ring coincides with the center position of the screw-in section, a positioning guide rail is fixedly connected to the inner wall of the outer protective shell, a positioning water injection slider is slidably connected in the positioning guide rail, a control pull rod is fixedly connected to one side of the positioning water injection slider, one end of the control pull rod passes through the outer protective shell and extends to the outside, a built-in matching block is fixedly connected to the outside of the cleaning ring, the built-in matching block is engaged in the positioning water injection slider, and a replacement component corresponding to the cleaning ring is provided on the outside of the outer protective shell.

[0006] As a further solution of the present invention: the outer protective shell is provided with a movable groove, the control pull rod is slidably connected in the movable groove, and the movable groove is opposite to the positioning guide rail.

[0007] As a further solution of the present invention: a flushing pipe is sealedly connected to the positioning water injection sliding block, one end of the flushing pipe is fixedly connected to an annular water tank, and the annular water tank is fixed in the outer protective shell.

[0008] As a further solution of the present invention: the positioning water injection slider and the built-in matching block both have water holes that communicate with each other, the interior of the built-in matching block is connected to the interior of the cleaning ring, the interior of the cleaning ring is hollow, and the bottom of the cleaning ring has a plurality of annularly distributed water spray holes.

[0009] As a further solution of the present invention: the screw-in section is located inside the outer protective shell, and the bottom end surface of the outer protective shell is in contact with the implantation end surface.

[0010] As a further solution of the present invention: a base assembly is provided at the bottom of the outer protective shell, and the base assembly includes two flat plates and two adhesive layers, the adhesive layers are bonded to the bottom end surfaces of the flat plates, and the flat plates are provided with water injection holes corresponding to the flat plates.

[0011] As a further solution of the present invention: the outer protective shell is provided with a replacement groove, the screw-in segment is implanted into the vertebra, and the cleaning ring is opposite to the replacement groove.

[0012] As a further solution of the present invention: a replacement component is provided on the outside of the outer protective shell, and the replacement component includes a first placement box, a hook plate, a retaining seat and a second placement box. The retaining seat is fixedly connected to the outer protective shell, the hook plate is fixedly connected to the first placement box, the hook plate is inserted in the retaining seat, and the second placement box is fixed on the outside of the first placement box.

[0013] As a further solution of the present invention, a PVP surgical screw for osteoporosis patients with pedicle fracture includes the following use methods:

[0014] A: The screw body is directed to the accurate point according to the implantation position, and the outer protective shell controls the implantation area to ensure the accuracy of the implantation position for osteoporosis patients. The position of the monitoring screw can be controlled to control the position of the cleaning ring, which is moved in the outer protective shell. The adsorption layer can be directed to the position where the residue is generated, and gently rinsed with saline, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues.

[0015] B: By moving the cleaning ring to be opposite to the replacement groove, a new cleaning ring can be taken out from the second placement box, the cleaning ring can be pulled out from the positioning water injection slider and placed in the first placement box, and the new cleaning ring can be inserted into the positioning water injection slider.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] According to the implantation position, the screw body is directed to the accurate point, and the outer protective shell controls the implantation area to ensure the accuracy of the implantation position for osteoporosis patients. According to the position of the monitoring screw, the position of the cleaning ring can be controlled, and it can be moved in the outer protective shell, so that the adsorption layer can be directed to the position where the residue is generated, and gently rinsed with saline, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues. By moving the cleaning ring to be opposite to the replacement groove, a new cleaning ring can be taken from the second placement box, the cleaning ring can be pulled out from the positioning water injection slider and placed in the first placement box, and the new cleaning ring can be inserted into the positioning water injection slider. By limiting the position during the implantation process, the implantation position can be kept clean, which is beneficial to the operation of osteoporosis patients and improves the implantation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the structure of a PVP surgical screw for osteoporosis patients with pedicle fracture;

[0020] Figure 2 A schematic diagram of a replacement component in a PVP surgical screw for osteoporotic patients with pedicle fracture;

[0021] Figure 3 A schematic diagram of the structure of a cross-section of a PVP surgical screw for osteoporosis patients with pedicle fracture;

[0022] Figure 4 A schematic diagram of the structure of a cleaning ring in a PVP surgical screw for osteoporotic patients with pedicle fracture;

[0023] Figure 5 A schematic diagram of the structure of a positioning guide rail in a PVP surgical screw for osteoporosis patients with pedicle fracture;

[0024] In the figure: 1. nut head; 2. screw body; 21. outer shell; 211. movable groove; 212. replacement groove; 22. screw-in section; 23. expansion area; 24. positioning guide rail; 25. flushing pipe; 26. annular water tank; 27. cleaning ring; 271. built-in matching block; 272. adsorption layer; 28. positioning water injection slider; 281. control pull rod; 3. base assembly; 31. flat plate; 32. adhesion layer; 33. water injection hole; 4. replacement assembly; 41. first placement box; 42. hook plate; 43. retaining seat; 44. second placement box. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] See also Figure 1 to Figure 5 In an embodiment of the present invention, a PVP surgical screw for osteoporosis patients with pedicle fracture comprises a nut head 1, a screw body 2 is provided at the bottom of the nut head 1, the screw body 2 comprises an outer protective shell 21 and a screw-in section 22, an expansion area 23 is provided between the outer protective shell 21 and the screw-in section 22, a cleaning ring 27 is provided in the expansion area 23, the center position of the cleaning ring 27 coincides with the center position of the screw-in section 22, a positioning guide rail 24 is fixedly connected to the inner wall of the outer protective shell 21, a positioning water injection slider 28 is slidably connected in the positioning guide rail 24, a control pull rod 281 is fixedly connected to one side of the positioning water injection slider 28, one end of the control pull rod 281 passes through the outer protective shell 21 and extends to the outside, a built-in matching block 271 is fixedly connected to the outside of the cleaning ring 27, the built-in matching block 271 is engaged in the positioning water injection slider 28, and a replacement component 4 corresponding to the cleaning ring 27 is provided on the outside of the outer protective shell 21.

[0027] In this embodiment: a screw body 2 is provided at the bottom of the nut head 1. When implanting, operations can be performed on the nut head 1. The screw body 2 includes an outer protective shell 21 and a screw-in section 22. An expansion area 23 is provided between the outer protective shell 21 and the screw-in section 22. By making the screw body 2 face the found point according to the implantation position, the outer protective shell 21 controls the implantation area to ensure the accuracy of the implantation position for osteoporosis patients. According to the position of the monitoring screw, the diffusion of bone cement and the position of the screw are monitored to ensure the effect and safety of the operation. The outer protective shell 21 is facing the implantation position, and the base component 3 is supported. The base component 3 is provided at the bottom of the outer protective shell 21. The base component 3 includes two flat plates 31 and two adhesive layers 32. The adhesive layer 32 is bonded to the bottom of the flat plate 31. The end surface of the flat plate 31 is provided with a water injection hole 33 corresponding to the flat plate 31, and the contact surface can be bonded through the adhesive layer 32. If the operation is completed, water can be injected into the water injection hole 33 to make the inside of the adhesive layer 32 full of water to facilitate the detachment of the adhesive layer 32. The position of the cleaning ring 27 can be controlled and moved in the outer protective shell 21. The adsorption layer 272 can be directed to the position where the residue is generated, and gently rinsed with physiological saline, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues. The outer protective shell 21 is provided with a moving groove 211, and the control pull rod 281 is slidably connected in the moving groove 211. The moving groove 211 is opposite to the positioning guide rail 24. During operation, the pull rod 281 can be controlled to move downward for cleaning Ring 27, so that the positioning water injection slider 28 slides in the positioning guide rail 24, the positioning water injection slider 28 has a damping layer, the position of the positioning water injection slider 28 can be controlled, and the positioning water injection slider 28 will not slide by itself. When the cleaning ring 27 faces the generated bone fragments, bone chips and other impurities, the impurities can be adsorbed by the adsorption layer 272. The adsorption layer 272 has a certain viscosity and can drive the impurities away from the implanted position. If the cleaning ring 27 faces the implanted position, the positioning water injection slider 28 is sealed and connected with a flushing pipe 25, and one end of the flushing pipe 25 is fixedly connected with an annular water tank 26, which is fixed in the outer protective shell 21. The annular water tank 26 can be provided with a button, which is located on the outside of the outer protective shell 21 and is controlled by the button. To prevent the outflow of physiological saline from the annular water tank 26, the positioning water injection slider 28 and the built-in matching block 271 are provided with water holes that communicate with each other. The interior of the built-in matching block 271 is connected to the interior of the cleaning ring 27. The interior of the cleaning ring 27 is hollow, and the bottom of the cleaning ring 27 has a plurality of annularly distributed water spray holes, which can control the annular water tank 26, and the physiological saline inside it can be transported to the flushing tube 25, transition from the positioning water injection slider 28 and the built-in matching block 271, enter the cleaning ring 27, and be sprayed out from the cleaning ring 27, thereby flushing the impurity area, placing the adsorption layer 272 toward the location where the residue is generated, and gently flushing with physiological saline helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues.

[0028] A replacement assembly 4 is provided on the outside of the outer protective shell 21, and the replacement assembly 4 includes a first placement box 41, a hook plate 42, a retaining seat 43 and a second placement box 44. The retaining seat 43 is fixedly connected to the outer protective shell 21, the hook plate 42 is fixedly connected to the first placement box 41, the hook plate 42 is inserted in the retaining seat 43, and the second placement box 44 is fixed on the outside of the first placement box 41. By moving the cleaning ring 27 to be opposite to the replacement groove 212, a new cleaning ring 27 can be taken out from the second placement box 44, the cleaning ring 27 can be pulled out from the positioning water injection slider 28 and placed in the first placement box 41, and the new cleaning ring 27 can be inserted into the positioning water injection slider 28. By limiting the position during the implantation process, the implantation position is kept in a clean state, which is beneficial to the operation on osteoporosis patients and improves the implantation effect.

[0029] like Figure 1 to Figure 5 As shown, the present invention also provides a method for using a PVP surgical screw for osteoporotic patients with pedicle fracture, and the specific steps are as follows:

[0030] A: According to the implantation position, the screw body 2 is directed to the accurate point, and the outer protective shell 21 controls the implantation area to ensure the accuracy of the implantation position for osteoporosis patients. According to the position of the monitoring screw, the position of the cleaning ring 27 can be controlled, and the cleaning ring 27 can be moved in the outer protective shell 21. The adsorption layer 272 can be directed to the position where the residue is generated, and combined with saline to gently rinse, it helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues;

[0031] B: By moving the cleaning ring 27 to be opposite to the replacement groove 212, a new cleaning ring 27 can be taken out from the second placement box 44, the cleaning ring 27 can be pulled out from the positioning water injection slider 28 and placed in the first placement box 41, and the new cleaning ring 27 can be inserted into the positioning water injection slider 28.

[0032] The working principle of the present invention is as follows: when implanting, the operation can be performed on the nut head 1, the screw body 2 includes an outer protective shell 21 and a screw-in section 22, and an expansion area 23 is provided between the outer protective shell 21 and the screw-in section 22. By making the screw body 2 face the found point according to the implantation position, the outer protective shell 21 controls the implantation area, ensuring the accuracy of the implantation position for osteoporosis patients, and monitoring the position of the screw, monitoring the diffusion of bone cement and the position of the screw to ensure the effect and safety of the operation. The outer protective shell 21 is directed to the implantation position, and the base component 3 is supported. The base component 3 is provided at the bottom of the outer protective shell 21, and the contact surface can be bonded through the adhesive layer 32. If the operation is completed, water can be injected into the water injection hole 33 to make the inside of the adhesive layer 32 The cleaning ring 27 is soaked with water to facilitate the detachment of the adhesive layer 32. The position of the cleaning ring 27 can be controlled by moving it in the outer protective shell 21. The adsorption layer 272 can be directed to the position where the residue is generated, and gently rinsed with saline solution, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues. The outer protective shell 21 is provided with a moving groove 211, and the control pull rod 281 is slidably connected in the moving groove 211. The moving groove 211 is opposite to the positioning guide rail 24. During operation, the cleaning ring 27 can be moved downward by controlling the pull rod 281 to make the positioning water injection slider 28 slide in the positioning guide rail 24. The positioning water injection slider 28 has a damping layer, which can control the position of the positioning water injection slider 28 and prevent the positioning water injection slider 28 from self-slipping. The phenomenon of sliding, when the cleaning ring 27 faces the generated broken bones, bone chips and other impurities, the impurities can be adsorbed by the adsorption layer 272, and the adsorption layer 272 has a certain viscosity, which can drive the impurities away from the implanted position. If the cleaning ring 27 faces the implanted position, the annular water tank 26 can be provided with a button, and the button is located on the outside of the outer protective shell 21. The button is used to control the outflow of the physiological saline inside the annular water tank 26. The positioning water injection slider 28 and the built-in matching block 271 are provided with water holes that communicate with each other. The interior of the built-in matching block 271 is connected to the interior of the cleaning ring 27. The interior of the cleaning ring 27 is hollow, and the bottom of the cleaning ring 27 has a plurality of annularly distributed water spray holes, which can control the annular water tank 26 and the physiological saline inside it can be It is transported to the flushing tube 25, transitions from the positioning water injection slider 28 and the built-in matching block 271, enters the cleaning ring 27, and is sprayed out from the cleaning ring 27 to flush the impurity part. The adsorption layer 272 is facing the position where the residue is generated, and it is gently flushed with physiological saline, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues. A replacement component 4 is provided on the outside of the outer shell 21. By moving the cleaning ring 27 to be opposite to the replacement groove 212, a new cleaning ring 27 can be taken from the second placement box 44, so that the cleaning ring 27 is pulled out from the positioning water injection slider 28 and placed in the first placement box 41, and the new cleaning ring 27 is inserted into the positioning water injection slider 28. By limiting the position during the implantation process,It makes the implantation site clean, which is beneficial to the operation of osteoporosis patients and improves the implantation effect.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PVP surgical screw for osteoporosis patients with pedicle fracture, comprising a nut head (1), a screw body (2) provided at the bottom of the nut head (1), the screw body (2) comprising an outer protective shell (21) and a screwing section (22), characterized in that: An expansion area (23) is provided between the outer protective shell (21) and the screw-in section (22), a cleaning ring (27) is provided in the expansion area (23), the center position of the cleaning ring (27) coincides with the center position of the screw-in section (22), a positioning guide rail (24) is fixedly connected to the inner wall of the outer protective shell (21), a positioning water injection slider (28) is slidably connected in the positioning guide rail (24), a control pull rod (281) is fixedly connected to one side of the positioning water injection slider (28), one end of the control pull rod (281) passes through the outer protective shell (21) and extends to the outside, a built-in matching block (271) is fixedly connected to the outside of the cleaning ring (27), the built-in matching block (271) is engaged in the positioning water injection slider (28), and a replacement component (4) corresponding to the cleaning ring (27) is provided on the outside of the outer protective shell (21).

2. A PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: The outer protective shell (21) is provided with a movable groove (211), the control pull rod (281) is slidably connected in the movable groove (211), and the movable groove (211) is opposite to the positioning guide rail (24).

3. A PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: The positioning water injection sliding block (28) is sealedly connected to a flushing pipe (25), one end of the flushing pipe (25) is fixedly connected to an annular water tank (26), and the annular water tank (26) is fixed in the outer protective shell (21).

4. A PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: The positioning water injection slide block (28) and the built-in matching block (271) are provided with water holes communicating with each other, the interior of the built-in matching block (271) is connected with the interior of the cleaning ring (27), the interior of the cleaning ring (27) is hollow, and the bottom of the cleaning ring (27) is provided with a plurality of water spray holes distributed in an annular shape.

5. The PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: The screw-in section (22) is located inside the outer protective shell (21), and the bottom end surface of the outer protective shell (21) is in contact with the implantation end surface.

6. A PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: A base assembly (3) is provided at the bottom of the outer protective shell (21), and the base assembly (3) comprises two flat plates (31) and two adhesive layers (32), the adhesive layers (32) are bonded to the bottom end surfaces of the flat plates (31), and the flat plates (31) are provided with water injection holes (33) corresponding to the flat plates (31).

7. A PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: The outer protective shell (21) is provided with a replacement groove (212), the screw-in section (22) is implanted in the vertebra, and the cleaning ring (27) is opposite to the replacement groove (212).

8. The PVP surgical screw for osteoporosis patients with pedicle fracture according to claim 1, characterized in that: A replacement assembly (4) is provided on the outside of the outer protective shell (21), and the replacement assembly (4) includes a first placement box (41), a hook plate (42), a retaining seat (43) and a second placement box (44), wherein the retaining seat (43) is fixedly connected to the outer protective shell (21), the hook plate (42) is fixedly connected to the first placement box (41), the hook plate (42) is inserted into the retaining seat (43), and the second placement box (44) is fixed on the outside of the first placement box (41).

9. A method for using a PVP surgical screw for osteoporotic patients with pedicle fracture according to any one of claims 1 to 8, characterized in that: The following usage steps are included: A: The screw body (2) is directed to the identified point according to the implantation position, and the outer protective shell (21) controls the implantation area, thereby ensuring the accuracy of the implantation position for osteoporosis patients. The position of the monitoring screw can be controlled by controlling the position of the cleaning ring (27), which is moved in the outer protective shell (21). The adsorption layer (272) can be directed to the position where the residue is generated, and gently rinsed with physiological saline, which helps to reduce damage to surrounding tissues and protect the integrity of bones and soft tissues; B: By moving the cleaning ring (27) to face the replacement groove (212), a new cleaning ring (27) can be taken out from the second placement box (44), the cleaning ring (27) is pulled out from the positioning water injection slide block (28) and placed in the first placement box (41), and the new cleaning ring (27) is inserted into the positioning water injection slide block (28).

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