Fixing device for spine vertebral plate

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a fixing device for a spine vertebral plate, which comprises an end vertebral plate, two groups of lateral vertebral plates and two groups of adjusting vertebral plates, the two groups of lateral vertebral plates are respectively and fixedly connected with the end vertebral plate and are respectively positioned on one side of the end vertebral plate, and the two groups of adjusting vertebral plates are respectively positioned on the other side of the end vertebral plate and are respectively positioned on the other side of the end vertebral plate. One end of each set of adjusting vertebral plates is embedded into the inner side of the corresponding lateral vertebral plate, each set of adjusting vertebral plates is rotationally connected with the corresponding lateral vertebral plate, and the end vertebral plates, the lateral vertebral plates and the adjusting vertebral plates are all provided with lock holes. Different angles are formed by adjusting the angle of the adjusting vertebral plate, so that the spinal column fixing device can be suitable for people with different operation types and different physical qualities, has selectability and adjustability during spinal column fixing, is small and simple in structure, is more convenient in the operation process, can be correspondingly selected and adjusted according to the angle and curve required by a patient, and is suitable for popularization and application. And the selectivity in the operation process is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a fixing device for spinal laminae. Background Art

[0002] At present, the spinal lamina is an important part of the spine. It is the posterior part of the vertebral body and has a plate-like structure. Together with other structures, the lamina maintains the stability and integrity of the spine, supports the upright posture of the body, and participates in various body movements. The spinal lamina collaborates with adjacent vertebrae and intervertebral discs and other structures to bear the weight of the body and maintain the balance and stability of the body. When the spine is damaged or affected by diseases, such as fractures, herniated discs, etc., surgical treatment may be required, including the fixation of the spinal lamina. At the same time, cervical spondylosis, spondylosis and lumbar spondylosis are relatively common diseases in orthopedics. The surgery for lumbar spondylosis usually requires correction and expansion, and during the process of correction or expansion, the fixing plate fixes the spinal lamina to facilitate the subsequent recovery of the lumbar spine.

[0003] However, in the prior art, the use of a fixing device for spinal laminae is relatively single, and each human tissue is different, so there are deviations during the operation. However, the fixing device for spinal laminae has a unified angle size, resulting in surgical difficulties for some people. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixing device for spinal laminae, aiming to solve the technical problem that each human tissue is different in the prior art, so there are deviations during the operation, but the fixing device for spinal laminae has a unified angle size, resulting in surgical difficulties for some people.

[0005] To achieve the above purpose, a fixing device for spinal laminae adopted by the utility model includes an end lamina, side laminae and adjusting laminae. The number of the side laminae is two groups. The two groups of side laminae are respectively fixedly connected to the end lamina and are respectively located on one side of the end lamina. The number of the adjusting laminae is two groups. One end of each group of adjusting laminae is respectively embedded in the inner side of the corresponding side lamina, and each group of adjusting laminae is respectively rotatably connected to the corresponding side lamina. The end lamina, the side laminae and the adjusting laminae all have locking holes.

[0006] Wherein, one end of each group of side laminae has an embedding groove and a rotating groove, and the embedding groove communicates with the rotating groove.

[0007] Among them, each group of the adjusting laminae includes an inlay, an adjusting piece, and a locking plate. The inlay is embedded inside the inlay groove. The adjusting piece penetrates through the rotating groove and is fixedly connected to the inlay. The locking plate is fixedly connected to the adjusting piece and is located at one end of the adjusting piece away from the inlay.

[0008] Among them, the outer included angle of each group of the lateral laminae is β, and the included angle β is 40° - 60°.

[0009] Among them, the rotational spacing between the adjusting piece and both sides of the rotating groove is A, and the distance of the rotational spacing A is 1.5 mm - 2 mm.

[0010] A fixing device for spinal laminae of the present utility model drills holes according to requirements at the surgical position of a patient, attaches the end laminae, the lateral laminae, and the adjusting laminae to the drilling positions, selects corresponding size bolts to fix the end laminae and the lateral laminae. After completing the fixation of the end laminae and the lateral laminae, the angle of the adjusting laminae is adjusted according to the physical condition of the patient until the angle of the adjusting laminae reaches an angle suitable for the patient's spine, and bolts are used for fixation, thereby completing the fixation of the spine. At the same time, bone cement or artificial bones can be filled at the end laminae, the lateral laminae, and the adjusting laminae. By adjusting the angle of the adjusting laminae to form different angles, it can be applicable to different surgical types and people with different physical qualities. It has selectability and adjustability during spinal fixation, and the most suitable fixing plate for the patient can be selected. The above structural settings are small and simple in structure, more convenient during the surgical process, with high practicability and adjustability, and can be selected and adjusted according to the angles and curves required by the patient, making the selectivity during the surgical process wider. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 is a schematic structural diagram of a fixing device for spinal laminae of the present utility model.

[0013] Figure 2 is a cross-sectional view of the internal structure of a fixing device for spinal laminae of the present utility model.

[0014] 1 - End plate, 2 - Lateral plate, 3 - Adjusting plate, 4 - Locking hole, 5 - Embedded groove, 6 - Rotating groove, 7 - Insert, 8 - Adjusting piece, 9 - Locking plate. Detailed implementation mode

[0015] Please refer to Figure 1 and Figure 2 The present utility model provides a fixing device for spinal laminae, including an end plate 1, lateral plates 2 and adjusting plates 3. The number of the lateral plates 2 is two groups. The two groups of the lateral plates 2 are respectively fixedly connected to the end plate 1 and are respectively located on one side of the end plate 1. The number of the adjusting plates 3 is two groups. One end of each group of the adjusting plates 3 is respectively embedded in the inner side of the corresponding lateral plate 2, and each group of the adjusting plates 3 is respectively rotatably connected to the corresponding lateral plate 2. The end plate 1, the lateral plates 2 and the adjusting plates 3 all have locking holes 4.

[0016] In this implementation mode, drill holes at the surgical position of the patient according to requirements, attach the end plate 1, the lateral plates 2 and the adjusting plates 3 to the drilling position, and select corresponding size bolts to fix the end plate 1 and the lateral plates 2. After the end plate 1 and the lateral plates 2 are fixed, adjust the angle of the adjusting plate 3 according to the patient's physical condition until the angle of the adjusting plate 3 reaches an angle suitable for the patient's spine, and use bolts for fixation, so as to complete the fixation of the spine. At the same time, bone cement or artificial bones can be filled at the end plate 1, the lateral plates 2 and the adjusting plates 3. By adjusting the angle of the adjusting plate 3 to form different angles, it can be applicable to different surgical types and different physical fitness populations. When fixing the spine, it has selectable adjustability and can select the most suitable fixing plate for the patient.

[0017] Furthermore, one end of each group of the lateral plates 2 has an embedded groove 5 and a rotating groove 6, and the embedded groove 5 is communicated with the rotating groove 6.

[0018] In this implementation mode, through the setting and communication of the embedded groove 5 and the rotating groove 6, it is convenient to adjust the angle of the adjusting plate 3. The embedded groove 5 limits and fixes the adjusting plate 3 and realizes the rotating function, and the rotating groove 6 provides enough space for the angle adjustment of the adjusting plate 3.

[0019] Furthermore, each group of the adjusting plates 3 includes an insert 7, an adjusting piece 8 and a locking plate 9. The insert 7 is embedded in the embedded groove 5. The adjusting piece 8 penetrates through the rotating groove 6 and is fixedly connected to the insert 7. The locking plate is fixedly connected to the adjusting piece 8 and is located at one end of the adjusting piece 8 away from the insert 7.

[0020] In this embodiment, the insert piece 7 is clamped inside the insert groove 5, and the adjusting piece 8 penetrates through the rotating groove 6. The insert groove 5 clamps and fixes the insert piece 7. The cooperation between the insert piece 7 and the adjusting piece 8 can adjust the angle of the locking plate 9. The adjusted angle of the locking plate 9 needs to be determined according to the actual surgical situation of the patient to improve the fitting degree with the patient's spine.

[0021] Further, the outer included angle of each group of lateral laminae 2 is β, and the included angle β is 40° - 60°.

[0022] In this embodiment, according to the actual position of the patient's spine, the included angle β is selected to ensure that the locking plate can lock the patient's spine more closely and improve the surgical adaptability of the patient.

[0023] Further, the rotation distance between the adjusting piece 8 and both sides of the rotating groove 6 is A, and the distance of the rotation distance A is 1.5 mm - 2 mm.

[0024] In this embodiment, the setting of the rotation distance A can increase the steering angle of the adjusting piece 8, and at the same time increase the steering angle of the corresponding connected locking plate 9, so that an appropriate rotation distance A can be selected.

[0025] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand the whole or part of the process of implementing the above embodiment, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A fixation device for spinal lamina, characterized in that: It includes an end vertebral plate, a lateral vertebral plate and an adjustment vertebral plate. The lateral vertebral plates are in two groups. The two groups of lateral vertebral plates are fixedly connected to the end vertebral plates and are located on one side of the end vertebral plates. The adjustment vertebral plates are in two groups. One end of each group of adjustment vertebral plates is embedded in the inner side of the corresponding lateral vertebral plates, and each group of adjustment vertebral plates is rotatably connected to the corresponding lateral vertebral plates. The end vertebral plates, the lateral vertebral plates and the adjustment vertebral plates all have locking holes.

2. A fixation device for spinal lamina as claimed in claim 1, characterized in that: One end of each group of lateral vertebral plates is provided with an embedding groove and a rotation groove, and the embedding groove is communicated with the rotation groove.

3. A fixation device for spinal lamina as claimed in claim 2, characterized in that: Each group of the adjusting vertebral plates comprises an inlay, an adjusting plate and a locking plate. The inlay is embedded in the embedding groove. The adjusting plate passes through the rotating groove and is fixedly connected to the inlay. The locking plate is fixedly connected to the adjusting plate and is located at one end of the adjusting plate away from the inlay.

4. A fixation device for spinal lamina as claimed in claim 3, characterized in that: The outer side angle of each group of lateral vertebral plates is β, and the angle degree of the outer side angle β is 40° to 60°.

5. A fixation device for spinal lamina as claimed in claim 3, characterized in that: The rotation distance between the adjusting piece and the two sides of the rotation groove is A, and the distance of the rotation distance A is 1.5mm-2mm.

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