Titanium alloy spinal bone graft bed and spinal bone grafting surgical methods

Abstract

The application discloses a spinal titanium alloy bone graft bed and a spinal bone grafting operation method. The spinal titanium alloy bone graft bed comprises a main body and side wing parts arranged on both sides of the main body; the main body and the side wing parts are integrally formed; a plurality of through holes are arranged on the main body in a display arrangement, and a polygonal hole is formed between every four through holes; and the end part of the side wing part is arranged on a nail rod in a spinal nail rod system in a foldable manner. The spinal titanium alloy bone graft bed is arranged on the nail rod through the foldable side wing part, the use of screws is reduced, the operation difficulty is reduced, and the postoperative recovery of the patient is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a spinal titanium alloy bone graft bed and a spinal bone grafting operation method. BACKGROUND

[0002] The posterior laminectomy decompression surgery of the spine is the most commonly used surgical method for treating spinal diseases such as spinal stenosis, spinal fracture, intervertebral disc herniation, hyperosteogeny, intraspinal tumor and space-occupying, and severe spinal deformity. The purpose is to relieve or reduce the compression of the dural sac, spinal cord or nerve root caused by the shortening and volume reduction of each diameter of the spinal canal and lateral recess due to various causes. More than half of the spinal surgery will use laminectomy decompression to varying degrees. Internal fixation and bone grafting are generally required after laminectomy decompression surgery to provide immediate stability to the spine, and bone grafting can permanently ensure the stability of the spine.

[0003] At present, the bone graft bed for repairing bone defects after laminectomy decompression surgery in spinal surgery usually uses screw fixation, that is, the bone graft bed is fixed on the patient's spine through screws, but the use of screws can increase the difficulty of the operation and have adverse effects on the patient's postoperative recovery. SUMMARY

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

[0005] To this end, one aspect of an embodiment of the present application proposes a spinal titanium alloy bone graft bed.

[0006] To this end, another aspect of an embodiment of the present application proposes a spinal bone grafting operation method.

[0007] The spinal titanium alloy bone graft bed according to the embodiment of the present application comprises a main body and side wing parts arranged on both sides of the main body; the main body and the side wing parts are integrally formed, a plurality of through holes arranged in a row are arranged on the main body, and a polygonal hole is formed between every four through holes; the end part of the side wing part is arranged on the nail rod in the nail rod system in a foldable manner.

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

[0009] In some embodiments, 2 rows of through holes are arranged on the side wing part.

[0010] In some embodiments, a composite coating containing hydroxyapatite is arranged on the upper surface of the main body.

[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 body by laser cladding, and the titanium alloy substrate of the body is subjected to electrodeposition treatment.

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

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

[0015] In some embodiments, the periphery of the body and the side wing part is a flat area.

[0016] According to the spinal bone grafting operation method of the embodiment of the present application, the spinal titanium alloy bone graft bed described above is operated by the spinal bone grafting operation method, and the spinal bone grafting operation method comprises:

[0017] S10, fixing a spinal rod system near the spine of a patient;

[0018] S20, performing laminectomy on the patient;

[0019] S30, placing the spinal titanium alloy bone graft bed at the laminectomy site of the patient, and fixing the side wing part on the spinal titanium alloy bone graft bed to the rod of the spinal rod system.

[0020] In some embodiments, the side wing part is fixed by pressing with a forceps.

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

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

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, but not limiting 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 DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Fig. 1is a schematic view of a spinal titanium alloy bone graft bed according to an embodiment of the present application.

[0026] Fig. 2 is another schematic view of a spinal titanium alloy bone graft bed according to an embodiment of the present application.

[0027] Fig. 3 is yet another schematic view of a spinal titanium alloy bone graft bed according to an embodiment of the present application.

[0028] Reference Signs:

[0029] Spinal titanium alloy bone graft bed 100, main body 10, through hole 11, polygonal hole 12, side wing 20. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely in combination with specific embodiments below, but those skilled in the art should understand that the embodiments described below are only used to illustrate the present application and should not be regarded as limiting the scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

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

[0032] The main body 10 and the side wings 20 are integrally formed, the main body 10 is provided with a plurality of through holes 11 arranged in a row, and a polygonal hole 12 is formed between every four through holes 11; the end of the side wing 20 is arranged on the nail rod in the spinal nail rod system in a foldable manner.

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

[0034] It should be noted that the side wings 20 extend parallel to both sides from the main body 10. The side wings 20 are designed with a width of 2-4cm, and the side wings 20 have a folding degree. The end of the side wing 20 is arranged on the nail rod in the spinal nail rod system in a foldable manner.

[0035] The spinal titanium alloy bone graft bed 100 in the present application is made of medical titanium alloy, which has the characteristics of high strength, mechanical properties close to human bone, strength far superior to pure titanium, fatigue resistance, corrosion resistance, strong plasticity, excellent biocompatibility, etc.

[0036] Preferably, the part of the main body 10 is shaped according to the individual differences of clinical application, and the part of the main body 10 is designed to be of different thicknesses according to different anatomical positions of application.

[0037] Preferably, the outer convex surface (back side) of the main body 10 is the contact surface with the grafted bone, which is designed to be a sand-like sprayed structure to facilitate better compatibility of the grafted bone with the bone graft bed device, and the inner concave surface is designed to be a smooth surface.

[0038] Preferably, the outer side of the part of the side wing 20 is designed to be a sand-like sprayed structure, and the inner side contacts with the transverse process. The inner side of the side wing 20 is designed to be a bone-adhesive sprayed surface to better adhere to the human bone tissue, so as to pursue more reliable stability.

[0039] Preferably, the spinal titanium alloy bone graft bed 100 is made of medical titanium alloy, which 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 can be perfectly matched and fixed with the human bone tissue.

[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, 2 rows of through holes 11 are arranged on the side wing 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 comprises calcium carbonate powder.

[0044] In some embodiments, the powder of the composite coating is sprayed on 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 electrode polarization treatment.

[0045] Preferably, the laser cladding spraying comprises the following steps: first, a layer of titanium powder is laid on the cleaned titanium alloy substrate, and then the mixed powder is laid on the titanium powder, and the total thickness of the sprayed powder is 1mm; a laser is used to spray the laid sprayed powder by laser cladding, the power of the laser 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 comprises the following steps: connecting the sprayed titanium alloy substrate to the anode of a constant current direct current source, and using a titanium sheet as the cathode; placing the titanium alloy substrate and the titanium sheet in an alkali solution at the same time, and connecting the constant current direct current source, the loading voltage is 80V, and the polarization treatment is 3min.

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

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

[0049] It can be understood that, in the bone grafting on the composite coating, the graft bone can be autologous bone, allogeneic bone, artificial granular bone, etc. The graft bone is embedded and filled, the spinous processes of the upper and lower vertebrae connected with the diseased vertebra are trimmed slightly to facilitate full contact with the graft bone and facilitate bone ingrowth. At the same time, various bone growth promoting factors can be added to the graft bone to accelerate bone healing.

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

[0051] In some embodiments, the four sides of the main body 10 and the side wings 20 are flat plate areas.

[0052] As shown in Figs. 2-3 The spinal bone grafting surgery method according to the embodiments of the present application is used to operate the spinal titanium alloy bone graft bed described above, and the spinal bone grafting surgery method comprises:

[0053] S10, fixing a spinal nail rod system near the spine of a patient;

[0054] S20, performing laminectomy on the patient;

[0055] S30, placing a spinal titanium alloy bone graft bed at the laminectomy site of the patient, and fixing the side wings on the spinal titanium alloy bone graft bed to wrap around the nail rod of the spinal nail rod system.

[0056] In some embodiments, the side wings are fixed by pressing with a forceps.

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

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

[0059] In the present application, the spinal internal fixation surgery generally includes three main steps, one is the fixation of the spinal nail rod system, the second is the laminectomy, and the third is the bone grafting.

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

[0061] Compared with the previous surgical steps, the present application proposes a placement method of a spinal titanium alloy bone graft bed. The bone graft bed has a certain plasticity and can be placed at the laminectomy defect site. The two wings are wrapped around the nail rod. After preliminary wrapping, the forceps can be used for pressing and fixing. The metal plasticity is used to fix the two wings on the nail rod. Then, the medical bone particles are spread on the bone graft bed, and the bone grafting is completed.

[0062] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0063] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0064] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0066] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0067] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A spinal titanium alloy bone bed, characterized in that, The main body and the side wing part are integrally formed, the main body is provided with a plurality of through holes arranged in a row, and a polygonal hole is formed between every four through holes. The end of the side wing part is foldably arranged on a nail rod in a nail rod system. Two rows of through holes are arranged on the side wing part. 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 base body of the main body by laser cladding, and the titanium alloy base body of the main body is subjected to electrode polarization treatment. A bone particle placement layer is arranged on the composite coating. The main body and the side wing part are integrally formed, the main body is provided with a plurality of through holes arranged in a row, and a polygonal hole is formed between every four through holes.

2. The spinal titanium alloy bone bed according to claim 1, wherein The through holes on the main body are 30 in total, and the through holes are arranged in 6 rows, and each row is provided with 5 through holes.

3. The spinal titanium alloy bone bed according to claim 1, wherein The thickness of the main body is between 1.0-1.5mm. ​

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