Combined maxilla nasal basilar prosthesis

Abstract

The utility model relates to a combined maxillary nasal base prosthesis, which comprises a prosthesis body made of PEEK (Polyether-Ether-Ketone) material, and is characterized in that the prosthesis body consists of a nasal base base and a nasal base abutment, the bottom surface of the nasal base base is attached to the bone surface of an affected part, and the bottom surface of the nasal base abutment is attached to the bone surface of the affected part. The nose base is provided with a first nail hole for a titanium nail to penetrate through to fix the nose base on a bone surface; the bottom face of the nose base abutment is attached to the top face of the nose base base, the bottom face of the nose base abutment is matched with the top face of the nose base base in an inserted mode through a rib groove structure, and the nose base abutment is provided with second nail holes for titanium nails to penetrate through and fix the titanium nails to the nose base base. When an operator is not satisfied with a repair form, only the nasal base abutment needs to be replaced, and during replacement, the nasal base abutment is detached from the nasal base, so that a new nasal base abutment is rapidly replaced and mounted, the nasal base is still fixed on a bone surface, and the surgical injury is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shaping implant, especially to a combined maxillary nasal base prosthesis. BACKGROUND

[0002] Nasal base filling surgery: Nasal base filling surgery is a surgical method to solve facial depression. Surgical steps: expose the patient's maxilla, implant the filler into the nasal alar base, and then use screws to connect and fix the filler to the human body. The following documents all record the aforementioned osteotomy.

[0003] Huang Mengju, Guo Shiwei, Yang Mingyong. Progress of cosmetic treatment of nasal base depression in Asians [J]. Chinese Journal of Aesthetic and Plastic Surgery, 2023, 34 (01): 42-45.

[0004] Zhang Jinhui, Ren Zhilong, Zhai Xu, et al. 3D design and printing of PEEK prosthesis to fill the nasal base: a case report [J]. Chinese Journal of Aesthetic and Plastic Surgery, 2022, 33 (10): 637-638.

[0005] Lin Guangxian, Song Zhen, Fan Fei. Clinical application progress of nasal base filling surgery for correcting alar base depression [J]. Chinese Journal of Aesthetic and Plastic Surgery, 2022, 33 (05): 312-314+322.

[0006] Lu Hui. Nasal base filling, six questions you care about [J]. Popular health, 2022, (05): 94-95.

[0007] The current nasal base filling surgery has the following problems:

[0008] 1. The existing nasal base implant is prone to irreversible damage to the patient's maxilla after replacement or removal.

[0009] 2. When the surgeon is not satisfied with the repair shape, the prosthesis needs to be replaced, which increases the surgical damage. After multiple nasal base related surgeries, the filling area is damaged, and it is more difficult to position the filler in the right place.

[0010] 3. The nasal base surgery requires high precision of the implant, and the waiting time is longer when designing the whole nasal base implant.

[0011] Therefore, the existing maxillary nasal base prosthesis needs to be replaced with another structure. SUMMARY

[0012] The utility model solves the technical problem of the prior art by providing a combined maxillary nasal base prosthesis with a reasonable structure. The combined structure facilitates quick replacement of new prostheses and effectively reduces the damage of replacement surgery.

[0013] The utility model discloses a technical scheme that solves the above technical problem is adopted: a combined maxillary bone nose base prosthesis, including the prosthesis body of adopting PEEK material, its characterized in that: the prosthesis body is composed of nose base pedestal and nose base abutment two parts, the bottom surface of nose base pedestal is pasted with the bone surface of the affected part, the nose base pedestal is opened and is provided with the first nail hole for the titanium nail to pass through and is fixed on the bone surface, the bottom surface of nose base abutment is pasted with the top surface of nose base pedestal, and the bottom surface of nose base abutment and the top surface of nose base pedestal are mutually inserted and matched through the muscle groove structure, the second nail hole for the titanium nail to pass through and be fixed on the nose base pedestal is opened on the nose base abutment, and the upper surface of nose base abutment is adapted to the anatomical form of the operator's expectation.

[0014] As preferred, the muscle groove structure is T-shaped muscle groove structure, the T-shaped muscle in the T-shaped muscle groove structure is arranged on one of the bottom surface of nose base abutment and the top surface of nose base pedestal, and the T-shaped groove in the T-shaped muscle groove structure is arranged on the other of the bottom surface of nose base abutment and the top surface of nose base pedestal. The muscle groove cooperation of trapezoidal shape makes the nose base pedestal and nose base abutment have constraint in the height direction, and the mutual constraint effect is better. The muscle groove structure can also be selected as dovetail-shaped muscle groove structure.

[0015] To ensure that the nose base pedestal is fixed firmly with the bone surface, and too many nail holes are not caused, as preferred, the first nail hole has two, and is located on the two sides of the muscle groove structure respectively. Of course, the number of nail holes can also be selected according to the size of the prosthesis body.

[0016] Further improvement, a plurality of first flow-through holes penetrating along the thickness direction of the nose base pedestal are arranged on the nose base pedestal, a plurality of second flow-through holes penetrating along the thickness direction of the nose base abutment are arranged on the nose base abutment, and the second flow-through holes and the corresponding first flow-through holes are mutually penetrated. The first flow-through hole and the second flow-through hole are beneficial to the exchange of body fluid at the two ends of the prosthesis body, and can significantly improve the combination effect of soft tissue and the surface of the implant.

[0017] As preferred, the first nail hole has a first small hole part and a first large hole part, the first small hole part penetrates the bottom surface of the nose base pedestal and communicates with the first large hole part, and the first large hole part penetrates the top surface of the nose base pedestal. The first large hole part can hide the head of the titanium nail in it, and better constraint effect is achieved on the head of the titanium nail.

[0018] As preferred, the first large hole part is a tapered hole with large outer diameter and small inner diameter. The tapered hole can increase the contact area of the head of the titanium nail and the large hole part.

[0019] Similarly, the second nail hole has a second small hole part and a second large hole part, the second small hole part penetrates the bottom surface of the nose base abutment and communicates with the second large hole part, and the second large hole part penetrates the top surface of the nose base abutment.

[0020] Similarly, the second large hole part is a tapered hole with the outer diameter larger than the inner diameter.

[0021] Compared with the prior art, the prosthesis body is composed of a nasal basal pedestal and a nasal basal abutment, the nasal basal pedestal is fixed to the bone surface of the affected part through titanium nails, the bottom surface of the nasal basal abutment and the top surface of the nasal basal pedestal are mutually inserted and matched through the muscle groove structure, quick installation and quick replacement can be realized, the personalized peek implant is designed according to patient data, the nasal basal pedestal is completely matched with the bone surface of the patient through personalized design, the upper surface of the nasal basal abutment is matched with the expected anatomical form of the operator, and finally the nasal basal abutment is fixed to the nasal basal pedestal through titanium nails. When the operator is not satisfied with the repair form, only the nasal basal abutment needs to be replaced, the nasal basal abutment is removed from the nasal basal pedestal during replacement, a new nasal basal abutment is installed, and the nasal basal pedestal is still fixed to the bone surface, thereby reducing surgical damage and installation difficulty of the doctor during secondary surgery. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a front perspective view of an embodiment of the present application.

[0023] Fig. 2 It is a back perspective view of an embodiment of the present application.

[0024] Fig. 3 It is an exploded view of an embodiment of the present application.

[0025] Fig. 4 It is a use state diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0026] The present application will be further described in detail below with reference to the drawings.

[0027] As shown in the drawings, it is an embodiment of the present application. Figs. 1-4

[0028] A combined maxillary nasal basal prosthesis comprises a prosthesis body made of PEEK material. The prosthesis body is composed of a nasal basal pedestal 1 and a nasal basal abutment 2, the bottom surface of the nasal basal pedestal 1 is matched with the bone surface of the affected part, the nasal basal pedestal 1 is provided with a first nail hole 3a for the titanium nail to pass through and be fixed to the bone surface; the bottom surface of the nasal basal abutment 2 is matched with the top surface of the nasal basal pedestal 1, and the bottom surface of the nasal basal abutment 2 and the top surface of the nasal basal pedestal 1 are mutually inserted and matched through the muscle groove structure, the nasal basal abutment 2 is provided with a second nail hole 3b for the titanium nail to pass through and be fixed to the nasal basal pedestal 1, and the upper surface of the nasal basal abutment 2 is matched with the expected anatomical form of the operator.

[0029] ​The rib groove structure is a T-shaped rib groove structure, the T-shaped rib 4a in the T-shaped rib groove structure is arranged on the top surface of the nasal basal pedestal 1, and the T-shaped groove 4b in the T-shaped rib groove structure is arranged on the bottom surface of the nasal basal abutment 2. The first nail hole 3a has two, respectively on both sides of the T-shaped rib 4a.

[0030] The nasal basal pedestal 1 is provided with a plurality of first flow-through holes 5a penetrating in the thickness direction thereof, and the nasal basal abutment 2 is provided with a plurality of second flow-through holes 5b penetrating in the thickness direction thereof, and the second flow-through holes 5b and the corresponding first flow-through holes 5a are mutually penetrated.

[0031] The first nail hole 3a has a first small hole part 3a1 and a first large hole part 3a2, the first small hole part 3a1 penetrates the bottom surface of the nasal basal pedestal 1 and communicates with the first large hole part 3a2, and the first large hole part 3a2 penetrates the top surface of the nasal basal pedestal 1. The first large hole part 3a2 is a tapered hole with the outside large and the inside small.

[0032] The second nail hole 3b has a second small hole part 3b1 and a second large hole part 3b2, the second small hole part 3b1 penetrates the bottom surface of the nasal basal abutment 2 and communicates with the second large hole part 3b2, and the second large hole part 3b2 penetrates the top surface of the nasal basal abutment 2. The second large hole part 3b2 is a tapered hole with the outside large and the inside small.

[0033] The specific design process of the implant is as follows.

[0034] 1. Reverse reconstruction: according to the CT data of the patient, the patient's skeleton with complete, accurate and clear boundary profile is extracted reversely by threshold segmentation, manual selection segmentation and other ways.

[0035] 2. Nasal basal pedestal 1 design: according to the required repair range and repair height of the patient, the nasal basal pedestal 1 with the inner surface completely fitted to the patient's bone surface is designed, and according to the patient's bone and soft tissue morphology, the side surface is designed to achieve smooth transition and design T-shaped rib, which is convenient for the assembly and fixation of the nasal basal abutment 2.

[0036] 3. Nasal basal abutment 2 design: according to the nasal basal pedestal 1 designed in the second step, the implant (nasal basal abutment 2) with the inner surface completely fitted to the top surface of the nasal basal pedestal is designed, and according to the patient's bone and soft tissue morphology and the side surface morphology of the nasal basal pedestal 1, the outer surface of the nasal basal abutment 2 is designed to achieve smooth transition.

[0037] After the surface design is completed, the nail hole and the flow-through hole are designed, the function of the nail hole is to fix the implant (the volume of titanium nail is small, and there is almost no artifact under CT image), and the function of the flow-through hole is to increase the combination effect of soft tissue and the surface of the implant.

[0038] 4. The design of the hole on the base pedestal 1 and the nasal base abutment 2: after the surface of the nasal base pedestal 1 and the surface of the nasal base abutment 2 are designed, the nail hole and the micro hole are designed. The function of the nail hole is to fix the implant with titanium nails (the volume of titanium nails is small, and almost no artifacts appear under CT imaging). The micro hole can improve the tissue bonding effect.

[0039] 5. Micro hole optimization: the size and shape of the micro hole are optimized, and animal experiments are conducted, which can significantly improve the bonding effect of the implant surface and the tissue.

[0040] 6. The final design effect of the implant: the nasal base pedestal 1 is linked with the bone surface through titanium nails, and the nasal base abutment 2 is connected with the nasal base pedestal 1 through titanium nails and T-shaped ribs 4a and T-shaped grooves 4b.

[0041] It should be noted that in the description of the present embodiment, the terms "front, back", "left, right", "up, down" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements 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. The terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. 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.

Claims

1. A combined maxillary nasal basal prosthesis comprising a prosthesis body made of PEEK material, characterized in that: The prosthesis body is composed of two parts of a nasal base pedestal (1) and a nasal base abutment (2), the bottom surface of the nasal base pedestal (1) is attached to the bone surface of the affected part, the nasal base pedestal (1) is provided with first nail holes (3a) for titanium nails to pass through and be fixed on the bone surface; the bottom surface of the nasal base abutment (2) is attached to the top surface of the nasal base pedestal (1), and the bottom surface of the nasal base abutment (2) and the top surface of the nasal base pedestal (1) are mutually inserted and matched through a muscle groove structure, the nasal base abutment (2) is provided with second nail holes (3b) for titanium nails to pass through and be fixed on the nasal base pedestal (1), and the upper surface of the nasal base abutment (2) is matched with the anatomical form expected by the surgeon.

2. The combined maxillary nasal basal prosthesis according to claim 1, characterized in that: The muscle groove structure is a T-shaped muscle groove structure, the T-shaped muscle (4a) in the T-shaped muscle groove structure is arranged on one of the bottom surface of the nasal base abutment (2) and the top surface of the nasal base pedestal (1), and the T-shaped groove (4b) in the T-shaped muscle groove structure is arranged on the other of the bottom surface of the nasal base abutment (2) and the top surface of the nasal base pedestal (1).

3. The modular maxillary nasal basal prosthesis according to claim 1, characterized in that: The first nail holes (3a) are two, respectively located on the two sides of the muscle groove structure.

4. The modular maxillary nasal basal prosthesis according to claim 1, characterized in that: The nasal base pedestal (1) is provided with a plurality of first flow-through holes (5a) penetrating in the thickness direction thereof, the nasal base abutment (2) is provided with a plurality of second flow-through holes (5b) penetrating in the thickness direction thereof, and the second flow-through holes (5b) and the corresponding first flow-through holes (5a) are mutually penetrated.

5. The modular maxillary nasal basal prosthesis according to claim 1, characterized in that: The first nail holes (3a) have a first small hole part (3a1) and a first large hole part (3a2), the first small hole part (3a1) penetrates the bottom surface of the nasal base pedestal (1) and communicates with the first large hole part (3a2), and the first large hole part (3a2) penetrates the top surface of the nasal base pedestal (1).

6. The modular maxillary nasal basal prosthesis according to claim 5, characterized in that: The first large hole part (3a2) is a tapered hole with the outside large and the inside small.

7. The modular maxillary nasal basal prosthesis according to claim 1, characterized in that: The second nail holes (3b) have a second small hole part (3b1) and a second large hole part (3b2), the second small hole part (3b1) penetrates the bottom surface of the nasal base abutment (2) and communicates with the second large hole part (3b2), and the second large hole part (3b2) penetrates the top surface of the nasal base abutment (2).

8. The modular maxillary nasal basal prosthesis according to claim 7, characterized in that: The second large hole part (3b2) is a tapered hole with the outside large and the inside small.

9. The modular maxillary nasal basal prosthesis according to claim 1, characterized in that: The muscle groove structure is a dovetail-shaped muscle groove structure.

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