Spine titanium alloy bone grafting bed and spine bone grafting operation method

Abstract

The invention discloses a spine titanium alloy bone grafting bed and a spine bone grafting operation method. The spine titanium alloy bone grafting bed comprises a body and side wing parts arranged on the two sides of the body. The main body and the side wing parts are integrally formed, the main body is provided with a plurality of through holes which are arranged in a display mode, and a polygonal hole is defined by every four through holes; and the end parts of the side wing parts can be arranged on a nail rod in the spine nail rod system in a bending manner. According to the spine titanium alloy bone grafting bed, the side wing parts of the spine titanium alloy bone grafting bed are bent and arranged on the nail rods, so that the use of screws is reduced, the operation difficulty is reduced, and the postoperative recovery of a patient is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a spinal titanium alloy bone grafting bed and a spinal bone grafting surgical method. Background Art

[0002] Posterior spinal laminectomy and spinal decompression surgery is the most commonly used surgical method for treating spinal diseases such as spinal stenosis, spinal fractures, herniated discs, bone hyperplasia, intraspinal tumors and masses, and severe spinal deformities. The purpose is to relieve or alleviate the compression of the dura mater, spinal cord, or nerve roots caused by the shortening and volume loss of the spinal canal and lateral recess caused by the various reasons mentioned above. More than half of spinal surgeries will use laminectomy and spinal decompression as a surgical method to varying degrees. After laminectomy and spinal decompression, internal fixation and bone grafting are generally required with a screw-rod system. Internal fixation is to provide immediate stability of the spine, while bone grafting can permanently ensure spinal stability.

[0003] Currently, bone grafts that can be used to repair bone defects after spinal laminectomy and spinal canal decompression surgery are usually fixed with screws, that is, the bone graft bed is fixed to the patient's spine with screws. However, the use of screws can easily increase the difficulty of the operation and have an adverse effect on the patient's postoperative recovery. Summary of the Invention

[0004] The purpose of the present invention is to provide a spinal titanium alloy bone grafting bed and a spinal bone grafting surgical method to solve the problems caused by the existing screw fixation method.

[0005] To this end, one embodiment of the present invention provides a spinal titanium alloy bone graft bed.

[0006] To this end, another embodiment of the present invention provides a spinal bone grafting method.

[0007] According to an embodiment of the present invention, the spinal titanium alloy bone graft bed includes a main body and side wings arranged on both sides of the main body; the main body and the side wings are formed as one piece, and the main body is provided with a plurality of through holes arranged in an array, and a polygonal hole is formed between every four of the through holes; the ends of the side wings can be bent and arranged on the nail rods in the spinal nail rod system.

[0008] In some embodiments, there are 30 through holes on the main body, and the through holes are arranged in 6 rows, with 5 through holes in each row.

[0009] In some embodiments, two rows of through holes are provided on the side wing portion.

[0010] In some embodiments, the upper surface of the body is provided with a composite coating comprising hydroxyapatite.

[0011] In some embodiments, the composite coating further comprises calcium carbonate powder.

[0012] In some embodiments, the powder of the composite coating is sprayed on the surface of the titanium alloy substrate of the main body by laser cladding, and the titanium alloy substrate of the main body is subjected to an electric polarization treatment.

[0013] In some embodiments, a bone particle placement layer is provided on the composite coating.

[0014] In some embodiments, the body has a thickness between 1.0-1.5 mm.

[0015] In some embodiments, the main body and the side wings are surrounded by flat plate areas.

[0016] According to the spinal bone grafting surgical method of an embodiment of the present invention, the spinal titanium alloy bone graft bed described above is used for a spinal bone grafting surgical method, and the spinal bone grafting surgical method includes:

[0017] S10, fix the spinal screw-rod system near the patient's spine;

[0018] S20, the patient underwent laminectomy;

[0019] S30, the spinal titanium alloy bone graft bed is placed at the laminectomy site of the patient, and the side wings on the spinal titanium alloy bone graft bed are fixedly wound around the screw rods of the spinal screw-rod system.

[0020] In some embodiments, the side wings are pressurized and fixed by a high-pressure rod holder.

[0021] In some embodiments, the spinal bone grafting surgical method further comprises:

[0022] S40, spreading medical bone particles on the surface of the spinal titanium alloy bone graft bed.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present disclosure. Other features and aspects of the present disclosure will become more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1Schematic diagram of a spinal titanium alloy bone graft bed according to an embodiment of the present invention.

[0026] Figure 2 1 is another schematic diagram of a spinal titanium alloy bone graft bed according to an embodiment of the present invention.

[0027] Figure 3 1 is another schematic diagram of a spinal titanium alloy bone graft bed according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] A spinal titanium alloy bone graft bed 100 comprises a main body 10 , a through hole 11 , a polygonal hole 12 , and wing portions 20 . DETAILED DESCRIPTION

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. However, it should be understood by those skilled in the art that the embodiments described below are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 3 As shown, the spinal titanium alloy bone graft bed 100 according to an embodiment of the present invention includes a main body 10 and side wings 20 arranged on both sides of the main body 10 .

[0032] The main body 10 and the wing portion 20 are integrally formed. The main body 10 is provided with a plurality of through holes 11 arranged in an array, and a polygonal hole 12 is formed between every four through holes 11. The end of the wing portion 20 can be bent and set on the nail rod in the spinal nail rod system.

[0033] It is understandable that the main body 10 is a mesh structure as a whole, and the through hole 11 is designed as a circular hole with a diameter of 2.5-3 mm, so that the transplanted bone will not cause bone fragments to leak between the dura mater sac and the spinal titanium alloy bone graft bed 100 when embedded.

[0034] It should be noted that the wing portions 20 extend parallel to both sides of the main body 10. The wing portions 20 are designed to have a width of 2-4 cm and are flexible. The ends of the wing portions 20 can be bent and arranged on the rods of the spinal rod system.

[0035] The spinal titanium alloy bone graft bed 100 of the present invention is made of medical titanium alloy, which has high strength and mechanical properties close to those of human bones. Its strength is far superior to that of pure titanium. It also has the characteristics of fatigue resistance, corrosion resistance, strong plasticity and excellent biocompatibility.

[0036] Preferably, the body 10 may be appropriately shaped according to individual differences in clinical applications, and the body 10 may be designed to have different thicknesses according to different anatomical locations of application.

[0037] Preferably, the outer convex surface (dorsal side) of the main body 10 is the contact surface with the transplanted bone and is designed to be a frosted spray structure to facilitate better compatibility between the transplanted bone and the bone grafting bed device, and the inner concave surface is designed to be a smooth surface.

[0038] Preferably, the outer side surface of the wing portion 20 is designed as a frosted spray structure, and the inner side surface is in contact with the transverse process. The inner side surface of the wing portion 20 is designed as a bone-attached spray surface to better fit the human bone tissue in order to pursue more reliable stability.

[0039] Preferably, the spinal titanium alloy bone graft bed 100 is made of medical titanium alloy and can be appropriately cut and shaped according to the physiological curvature of the human body and the size of the spinal canal, so that the spinal titanium alloy bone graft bed 100 and the human bone tissue can be perfectly matched and fixed.

[0040] In some embodiments, there are 30 through holes 11 on the main body 10 , and the through holes 11 are arranged in 6 rows, with 5 through holes 11 in each row.

[0041] In some embodiments, two rows of through holes 11 are provided on the wing portion 20 .

[0042] In some embodiments, the upper surface of the main body 10 is provided with a composite coating containing hydroxyapatite.

[0043] In some embodiments, the composite coating further includes calcium carbonate powder.

[0044] In some embodiments, the powder of the composite coating is sprayed onto the surface of the titanium alloy substrate of the main body 10 by laser cladding, and the titanium alloy substrate of the main body 10 is subjected to an electric polarization treatment.

[0045] Preferably, laser cladding spraying includes the following steps: first laying a layer of titanium powder on the cleaned titanium alloy substrate, and then laying the mixed powder on the titanium powder, with the total thickness of the sprayed powder being 1 mm; using a laser to perform laser cladding spraying on the laid spraying powder, the laser power is 600w~1200w, the scanning speed is 3.8~11.2mm / s, and argon is used as the protective gas.

[0046] Preferably, the electrode polarization treatment includes the following steps: connecting the sprayed titanium alloy substrate to the anode of a constant current DC power supply and using the titanium sheet as the cathode; placing the titanium alloy substrate and the titanium sheet in an alkaline solution at the same time, and connecting the constant current DC power supply with a loading voltage of 80V, and polarizing for 3 minutes.

[0047] Preferably, the alkali solution is 1 mol / L NaOH solution.

[0048] In some embodiments, a bone particle placement layer is provided on the composite coating.

[0049] It is understood that bone grafting is performed on the composite coating. The graft can be autologous bone, allogeneic bone, or artificial morselized bone. The graft is pressed and packed tightly, and the upper and lower vertebral spinous processes connected to the affected vertebra are slightly trimmed to ensure adequate contact with the graft and facilitate bone ingrowth. Furthermore, various bone growth factors can be added to the graft to accelerate bone healing.

[0050] In some embodiments, the thickness of the body 10 is between 1.0-1.5 mm.

[0051] In some embodiments, the periphery of the main body 10 and the wing portion 20 is a flat plate area.

[0052] like Figure 2-Figure 3 As shown, according to the spinal bone grafting surgical method of an embodiment of the present invention, the spinal titanium alloy bone grafting bed is used for the spinal bone grafting surgical method, and the spinal bone grafting surgical method includes:

[0053] S10, fix the spinal screw-rod system near the patient's spine;

[0054] S20, the patient underwent laminectomy;

[0055] S30, the spinal titanium alloy bone graft bed is placed at the patient's laminectomy site, and the lateral wings on the spinal titanium alloy bone graft bed are fixedly wrapped around the rods of the spinal screw-rod system.

[0056] In some embodiments, the side wings are compressed and fixed by a high-pressure rod holder.

[0057] In some embodiments, the spinal bone grafting surgical method further comprises:

[0058] S40, medical bone particles are spread on the surface of the spinal titanium alloy bone graft bed.

[0059] In the present invention, spinal internal fixation surgery generally includes three main steps: first, fixation of the spinal screw-rod system; second, lamina decompression; and third, bone grafting.

[0060] In the present invention, the spinal bone grafting surgical method mainly includes the specific details of the bone grafting step.

[0061] Compared to previous surgical procedures, the present invention proposes a method for placing a spinal titanium alloy bone graft bed. This bed, with a certain degree of plasticity, can be placed over the lamina defect. Its two wings are wrapped around the nail rod. After the initial wrapping, a strong rod holder is used to apply pressure and secure it, leveraging the metal's plasticity to secure the two wings to the nail rod. The bed is then filled with medical bone granules, completing the bone graft.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0066] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A spinal titanium alloy bone graft bed, characterized in that: It comprises a main body and side wings arranged on both sides of the main body; The main body and the side wing parts are integrally formed, and the main body is provided with a plurality of through holes arranged in an array, and a polygonal hole is formed between every four through holes; The ends of the side wings can be bent and arranged on the nail rod of the spinal nail rod system.

2. The spinal titanium alloy bone graft bed according to claim 1, characterized in that: There are 30 through holes on the main body, which are arranged in 6 rows, with 5 through holes in each row; and 2 rows of through holes are arranged on the side wings.

3. The spinal titanium alloy bone graft bed according to claim 1, characterized in that: The upper surface of the main body is provided with a composite coating containing hydroxyapatite, and the composite coating further comprises calcium carbonate powder; The powder of the composite coating is sprayed on the surface of the titanium alloy substrate of the main body by laser cladding, and the titanium alloy substrate of the main body is subjected to an electric polarization treatment.

4. The spinal titanium alloy bone graft bed according to claim 3, characterized in that: A bone particle placement layer is provided on the composite coating.

5. The spinal titanium alloy bone graft bed according to claim 1, characterized in that: The thickness of the main body is between 1.0 and 1.5 mm, and the main body and the side wings are surrounded by flat plate areas.

6. A spinal bone grafting surgical method, wherein the spinal titanium alloy bone graft bed according to claims 1 to 5 is used for performing a spinal bone grafting surgical procedure, characterized in that: include: S10, fix the spinal screw-rod system near the patient's spine; S20, the patient underwent laminectomy; S30, the spinal titanium alloy bone graft bed is placed at the laminectomy site of the patient, and the side wings on the spinal titanium alloy bone graft bed are fixedly wound around the screw rods of the spinal screw-rod system.

7. The spinal bone grafting method according to claim 6, characterized in that: The side wings are pressurized and fixed by a strong rod holder.

8. The spinal bone grafting method according to claim 6, characterized in that: Also includes: S40, spreading medical bone particles on the surface of the spinal titanium alloy bone graft bed.

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