Bone plate for skull repair surgery

Abstract

The utility model relates to a skull repair surgery bone plate which comprises a plate body, at least two seepage holes and at least two line hanging holes, the seepage holes are evenly distributed in the plate body, the line hanging holes are distributed in the plate body at intervals according to a preset distribution arc line, the seepage holes and the line hanging holes both penetrate through the plate body, and the plate body is used for covering and fixing a defect area of a skull. When the plate body covers the defect area of the skull, the line hanging holes are correspondingly distributed in the direction of the upper temporal line of the patient. When the bone plate for the skull repair surgery is used, the embedding angle of the plate body can be correspondingly adjusted according to the corresponding relation between the preset distribution arc line and the supratemporal line of a patient, so that the line hanging holes can be approximately arranged in the direction of the supratemporal line of the patient; according to the utility model, the suture line can pass through the suture line hanging hole and can draw and fix the temporalis in the growth direction of the temporalis, so that the traction effect of the temporalis before dissection and dissociation can be furthest restored, enough tension is provided for the temporalis, the normal function of the temporalis is maintained, and temporalis atrophy is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of skull repair, and in particular to a bone plate for skull repair surgery. Background Art

[0002] During cranioplasty, the skull defect is typically repaired by inserting and securing a bone plate. Prior to inserting the plate, the temporalis muscle and dura mater are dissected and freed to expose the edge of the bone window. The plate is then fitted into the window and secured.

[0003] In traditional cranioplasty, after the bone plate is fixed, the surgeon secures the free temporalis muscle to the corresponding galea aponeurotica with sutures. The galea aponeurotica is a layer of connective tissue covering the top of the skull, connecting the frontal and occipital bellies of the occipitofrontalis muscle and providing some protection for the skull.

[0004] However, the above-mentioned method of pulling the temporalis muscle through the galea aponeurotica has the problem of insufficient traction force of the galea aponeurotica, resulting in weak occlusal force or atrophy of the temporalis muscle. Summary of the Invention

[0005] Based on this, it is necessary to provide a bone plate for skull repair surgery to address the problem of insufficient traction of the galea aponeurotica leading to weakness or atrophy of the temporalis muscle in traditional skull repair surgery.

[0006] A bone plate for skull repair surgery comprises a plate body, at least two seepage holes, and at least two hanging wire holes. The seepage holes are evenly distributed on the plate body, and the hanging wire holes are distributed on the plate body at intervals according to preset distribution arcs. Both the seepage holes and the hanging wire holes pass through the plate body. The plate body is used to cover and be fixed to a defect area of ​​the skull. When the plate body covers the defect area of ​​the skull, the hanging wire holes are correspondingly arranged along the patient's superior temporal line.

[0007] In one embodiment, the wire hanging hole includes a first wire hanging hole and a second wire hanging hole, the first wire hanging hole and the second wire hanging hole are arranged in pairs, and the distance between adjacent first wire hanging holes and the distance between adjacent second wire hanging holes are both first spacing, and the distance between the first wire hanging hole and the second wire hanging hole in the same pair is the second spacing, and the first spacing is greater than the second spacing.

[0008] In one embodiment, the first spacing has a value range of 11 mm to 14 mm.

[0009] In one embodiment, the second distance ranges from 3 mm to 4 mm.

[0010] In one embodiment, the number of pairs of the first hanging wire holes and the second hanging wire holes ranges from 8 pairs to 11 pairs.

[0011] In one embodiment, the bone plate for skull repair surgery is further provided with at least two fixing holes, which are spaced apart along the edge of the plate body and pass through the plate body.

[0012] In one embodiment, the number of the fixing holes ranges from 5 to 8.

[0013] In one embodiment, the wire hanging hole has a chamfer.

[0014] In one embodiment, the plate is made of PEEK.

[0015] In one embodiment, the plate is curved.

[0016] When the above-mentioned bone plate for skull repair surgery is used, the plate body can be adjusted in its embedding angle according to the correspondence between the preset distribution arc and the patient's superior temporal line. In this way, the positions of the hanging holes opened on the plate body can be arranged roughly along the direction of the patient's superior temporal line. Then, when the temporalis muscle is pulled to the hanging holes through sutures, the hanging holes can pull and fix the temporalis muscle in the growth direction of the temporalis muscle. In this way, the pulling effect of the temporalis muscle before anatomical release can be restored to the maximum extent, sufficient pulling force can be provided to the temporalis muscle, the normal function of the temporalis muscle can be maintained, and the temporalis muscle atrophy can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a bone plate for skull repair surgery in one embodiment of the present application.

[0018] Figure 2 This is a diagram of the application of a bone plate for skull repair surgery in one embodiment of the present application.

[0019] Explanation of Figure Numbers

[0020] 10. Bone plate for cranioplasty surgery; 20. Temporalis muscle; 20a. Superior temporal line; 30. Suture; 100. Plate body; 100a. Preset distribution arc; 110. Infiltration hole; 120. Hanging hole; 121. First hanging hole; 122. Second hanging hole; 130. Fixation hole. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0023] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0024] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this 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 intermediate medium. Furthermore, when a first feature is described as being "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 described as being "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.

[0026] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0027] See Figure 1 , Figure 1 The structural diagram of the bone plate 10 for cranial repair surgery in one embodiment of the present application is shown in FIG. The bone plate 10 for cranial repair surgery provided in one embodiment of the present application includes a plate body 100, at least two liquid seepage holes 110 and at least two hanging wire holes 120. The liquid seepage holes 110 are evenly distributed on the plate body 100. In addition, in combination with Figure 2 As shown, Figure 2 This diagram shows the bone plate 10 used in cranioplasty surgery. Wire holes 120 are spaced along a predetermined arc 100a throughout the plate 100. Both the infiltration holes 110 and the wire holes 120 extend through the plate 100. The plate 100 is used to cover and secure the defect area of ​​the skull. When the plate 100 covers the defect area, the wire holes 120 are aligned along the patient's superior temporal line 20a.

[0028] When the above-mentioned bone plate 10 for skull repair surgery is in use, the plate body 100 can be adjusted in accordance with the corresponding relationship between the preset distribution arc 100a and the patient's superior temporal line 20a, and the embedding angle of the plate body 100 can be adjusted accordingly. In this way, the position of the hanging hole 120 opened on the plate body 100 can be roughly arranged along the direction of the patient's superior temporal line 20a. Then, when the temporalis muscle 20 is pulled to the hanging hole 120 through the suture 30, the hanging hole 120 can follow the growth direction of the temporalis muscle 20 to pull and fix the temporalis muscle 20. In this way, the pulling effect of the temporalis muscle 20 before anatomical release can be restored to the maximum extent, sufficient pulling force can be provided to the temporalis muscle 20, the normal function of the temporalis muscle 20 can be maintained, and the temporalis muscle 20 can be prevented from atrophy.

[0029] It should be noted that, combined with Figure 2 As shown, after the temporalis muscle 20 is dissected and freed, it contracts to a certain extent and cannot be restored to the position of the superior temporal line 20a (i.e., the original attachment point of the temporalis muscle 20) under the pulling action of the suture 30. Therefore, the aforementioned "arrangement of the suture holes 120 correspondingly along the patient's superior temporal line 20a" means that the arc formed by the arrangement of the suture holes 120 (preset distribution arc 100a) is roughly consistent with the curvature of the patient's superior temporal line 20a, and there is a certain distance between the arc formed by the arrangement of the suture holes 120 (preset distribution arc 100a) and the superior temporal line 20a, leaving a gap for the suture 30 to pull and allowing the temporalis muscle 20 to be as close to and restored to the position of the superior temporal line 20a as possible, thereby achieving the maximum restoration effect of the temporalis muscle 20 and preventing atrophy of the temporalis muscle 20.

[0030] It should be noted that the temporalis muscle 20 is the main muscle that maintains the mandibular position stable in the resting state. The overall contraction of the temporalis muscle 20 will help lift the mandible upward, which is manifested as a bite movement; the contraction of the posterior bundle of the temporalis muscle 20 on one side can help the mandible move toward the muscle contraction side; the contraction of the posterior bundles of the temporalis muscle 20 on both sides can help the mandible move backward. At the same time, the temporalis muscle 20 is an important muscle for maintaining symmetry of the bilateral temporal region. In traditional cranioplasty surgery, the surgeon fixes the temporalis muscle 20 under the corresponding galea aponeurotica with sutures 30. The tension is insufficient, which easily leads to problems of occlusal weakness and atrophy of the temporalis muscle 20, resulting in facial asymmetry that affects beauty and increases the psychological burden on patients. Therefore, the present application provides a hanging hole 120 on the plate 100 for the suture 30 to pull the temporalis muscle 20, which not only effectively solves the problem of insufficient tension of the galea aponeurotica, but also has a beneficial effect in improving postoperative beauty.

[0031] In addition, the bone plate 10 for cranioplasty surgery is provided with a fluid hole 110. During cranioplasty surgery, after the temporalis muscle 20 and the dura mater are dissected and freed to expose the bone window, fluid exudates from the dura mater can be discharged through the fluid hole 110 into the subcutaneous tissue and then drained through a subcutaneous drainage tube, thereby preventing epidural fluid accumulation. In addition to the fluid hole 110 on the plate 100, the present application further provides a thread hanging hole 120 on the plate 100 for sutures 30 to pull the temporalis muscle 20. This ensures that fluid exudates can flow freely while providing sufficient tension to the temporalis muscle 20, maintaining its normal function and preventing atrophy.

[0032] In some embodiments, the bone plate 10 for cranioplasty surgery is further provided with at least two fixing holes 130, which are spaced apart along the edge of the plate 100 and penetrate the plate 100. When the plate 100 needs to be inserted into and fixed to the defect area of ​​the skull, screws can be passed through the fixing holes 130 to secure the plate 100.

[0033] Specifically, the distribution positions of the fixing holes 130 can be designed according to the specific shape of the plate body 100 and the bone window conditions of the patient. For example, the spacing distances between two adjacent fixing holes 130 are inconsistent. In this way, while ensuring that the plate body 100 has a stable fixation effect, the screw positions can be reasonably distributed to improve the adaptability of the plate body 100 to the skull.

[0034] Furthermore, in some embodiments, the number of the fixing holes 130 is in the range of 5 to 8, so as to ensure that the plate 100 has a sufficient number of fixing holes 130 for fixing the plate 100 and ensure the stability of the fixing of the plate 100. Specifically, the number of the fixing holes 130 can be 5, 6, 7, or 8.

[0035] In some embodiments, the material of the plate body 100 can be polyetheretherketone (PEEK) or titanium mesh. Preferably, in some embodiments, the material of the plate body 100 is PEEK. Polyetheretherketone (PEEK) is an advanced special engineering plastic with properties such as high temperature resistance, self-lubrication, easy processing, and high mechanical strength. Therefore, in skull repair, the use of PEEK material helps to improve the repair effect of the skull defect area. Moreover, due to its high mechanical strength, it helps to serve as a stable hanging thread base when the suture 30 pulls the temporalis muscle 20, thereby ensuring that the suture 30 has sufficient pulling force on the temporalis muscle 20.

[0036] In some embodiments, the plate 100 is curved, so that the plate 100 can better fit the shape of the skull, thereby improving the repair effect of the skull defect area.

[0037] In some embodiments, the wire hanging hole 120 has a chamfer (not shown) to reduce the risk of the wire hanging hole 120 cutting and damaging the suture 30. Specifically, when the wire hanging hole 120 is opened on the plate body 100, the edge of the wire hanging hole 120 can be polished to form a chamfer and smooth edge, thereby reducing the risk of cutting and damaging the suture 30 and ensuring the effective pulling effect of the bone plate 10 on the temporalis muscle 20 for cranioplasty surgery.

[0038] In some embodiments, the thread hanging hole 120 includes a first thread hanging hole 121 and a second thread hanging hole 122. The first thread hanging hole 121 and the second thread hanging hole 122 are arranged in pairs. The suture 30 is punched between the first thread hanging hole 121 and the second thread hanging hole 122 of the same pair to achieve a pulling effect on the temporalis muscle 20. The distance between adjacent first thread hanging holes 121 and the distance between adjacent second thread hanging holes 122 are both the first spacing, so that after the suture 30 completes the punching operation in each pair of first thread hanging holes 121 and second thread hanging holes 122, the adjacent sutures 30 can be evenly distributed, which helps to improve the balanced distribution of the pulling force of the suture 30 on the temporalis muscle 20 and improve the pulling effect on the temporalis muscle 20. The distance between the first thread hanging hole 121 and the second thread hanging hole 122 of the same pair is the second spacing, which can ensure that there is sufficient operating space when the suture 30 is punched, and the above-mentioned first spacing is greater than the second spacing.

[0039] Furthermore, in this embodiment, the first spacing ranges from 11 mm to 14 mm, so that the spacing between adjacent sutures 30 can be set within a reasonable range. Optionally, in some embodiments, the first spacing can be 11 mm; in other embodiments, the first spacing can be 12 mm; and in other embodiments, the first spacing can be 14 mm. Specifically, the first spacing can be designed based on the actual patient's condition.

[0040] Furthermore, in this embodiment, the second spacing is in the range of 3mm-4mm. This allows the second spacing to be limited to a reasonable range. This ensures that there is sufficient clearance for the perforation operation while preventing the spacing between the suture 30 in the same pair of first and second hanging holes 121, 122 from deviating too much, thereby ensuring the traction effect of the suture 30 on the temporalis muscle 20. Optionally, in some embodiments, the second spacing can be 3mm; in other embodiments, the second spacing can be 3.5mm; and in other embodiments, the second spacing can be 4mm. Specifically, the specific value of the second spacing can be designed based on the patient's actual situation.

[0041] In some embodiments, the number of pairs of the first and second hanging holes 121, 122 ranges from 8 to 11 pairs. This ensures that the number of hanging holes 120 is within a reasonable range, thereby ensuring that the suture 30 has sufficient traction points on the temporalis muscle 20, ensuring the traction effect on the temporalis muscle 20, and maintaining the normal function of the temporalis muscle 20. Optionally, in some embodiments, the number of pairs of hanging holes 120 can be 8 pairs; in other embodiments, the number of pairs of hanging holes 120 can be 9 pairs; in other embodiments, the number of pairs of hanging holes 120 can be 10 pairs. Specifically, the number of pairs of hanging holes 120 can be designed according to the actual situation of the patient.

[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A bone plate for skull repair surgery, characterized in that: The bone plate for skull repair surgery includes a plate body, at least two seepage holes and at least two hanging wire holes. The seepage holes are evenly distributed on the plate body, and the hanging wire holes are distributed on the plate body according to preset distribution arc intervals, and the seepage holes and the hanging wire holes both pass through the plate body. The plate body is used to cover and fix to the defect area of ​​the skull. When the plate body covers the defect area of ​​the skull, the hanging wire holes are correspondingly arranged along the patient's superior temporal line direction.

2. The bone plate for cranioplasty according to claim 1, wherein: The wire hanging holes include a first wire hanging hole and a second wire hanging hole, the first wire hanging hole and the second wire hanging hole are arranged in pairs, and the distance between adjacent first wire hanging holes and the distance between adjacent second wire hanging holes are both first spacing, and the distance between the first wire hanging hole and the second wire hanging hole in the same pair is the second spacing, and the first spacing is greater than the second spacing.

3. The bone plate for cranioplasty according to claim 2, wherein: The first spacing has a value range of 11 mm to 14 mm.

4. The bone plate for cranioplasty according to claim 2, wherein: The second spacing has a value range of 3 mm to 4 mm.

5. The bone plate for cranioplasty according to claim 2, wherein: The number of pairs of the first hanging wire holes and the second hanging wire holes ranges from 8 pairs to 11 pairs.

6. The bone plate for cranioplasty according to any one of claims 1 to 5, characterized in that: The bone plate for skull repair surgery is further provided with at least two fixing holes, which are distributed at intervals along the edge of the plate body and pass through the plate body.

7. The bone plate for cranioplasty according to claim 6, characterized in that: The number of the fixing holes ranges from 5 to 8.

8. The bone plate for cranioplasty according to any one of claims 1 to 5, characterized in that: The wire hanging hole has a chamfer.

9. The bone plate for cranioplasty according to any one of claims 1 to 5, characterized in that: The material of the plate is PEEK material.

10. The bone plate for cranioplasty according to any one of claims 1 to 5, characterized in that: The plate body is in a curved shape.

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