A guide plate for oral soft tissue flap harvesting

Abstract

This utility model discloses an oral soft tissue flap retrieval guide, including a positioning plate and an indicator plate fixedly connected by a connecting rod. The positioning plate is a custom-designed, brace-like structure based on the patient's oral cavity, adapted to a pre-set dentition near the flap retrieval area. The positioning plate has at least one positioning inspection window for observing whether the positioning plate is in place. The indicator plate is fitted to the mucosa of the oral flap donation area, and its size and shape are consistent with the size and shape of the flap to be retrieved. This utility model is used to assist in flap retrieval and is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of oral medical device technology, specifically to an oral soft tissue flap harvesting guide plate. Background Technology

[0002] Soft tissue grafting is a classic and effective technique in periodontal surgery and implant restoration surgery, used to optimize the quality and quantity of gingival tissue. This technique involves harvesting a soft tissue flap from a donor site (such as the hard palate mucosa, maxillary tuberosity mucosa, or alveolar mucosa in the edentulous area) and transplanting it to the recipient site. Traditional soft tissue flap harvesting surgery relies heavily on the surgeon's experience and free hand manipulation. Due to the complex distribution of blood vessels and nerves beneath the donor site mucosa, the boundary control of the flap harvesting requires extremely high precision; any slight deviation can lead to complications such as tissue damage, bleeding, or nerve paralysis. Furthermore, this experience-based approach to determining the donor site is somewhat unreliable, not only time-consuming but also posing a significant challenge to the surgeon's skill and experience, resulting in a high surgical risk.

[0003] Currently, to improve this situation, 3D printing technology has been introduced. By conducting detailed three-dimensional measurements and analysis before surgery, a suitable flap harvesting area can be planned, and a flap harvesting guide can be made to assist in flap harvesting. Patients wear the guide during flap harvesting, which can effectively limit the donor area and reduce the difficulty and risk of the operation.

[0004] For example, patent document with application number 202120060376.7 discloses a soft tissue flap harvesting guide based on 3D printing. The guide has an opening for indicating the flap harvesting location, corresponding to a pre-designed mucosal flap area. The size and shape of the opening correspond to the size and shape of the designed soft tissue flap in the flap area. However, this internal window design has significant drawbacks: firstly, the operating space in oral surgery is small, and the area of ​​the harvested tissue flap is small. The window further restricts the movement of surgical instruments and obstructs the surgeon's field of vision, causing inconvenience; secondly, due to the small size of the window, its corners may hinder the movement of the scalpel, causing the blade to deviate inwards. This results in the actual harvested tissue flap area being smaller than the preset size, failing to meet the surgical requirements for the soft tissue flap and thus affecting the surgical outcome. Utility Model Content

[0005] This invention provides a guide plate for oral soft tissue flap retrieval, which is convenient to operate and assists in flap retrieval.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A soft tissue flap harvesting guide includes a positioning plate and an indicator plate fixedly connected by a connecting rod. The positioning plate is a dental crown-like structure customized based on the patient's oral cavity and is adapted to the pre-set dentition near the flap harvesting area. The positioning plate is provided with at least one positioning inspection window for observing whether the positioning plate is in place. The indicator plate is attached to the mucosa of the oral flap donor area, and its size and shape are consistent with the size and shape of the flap harvesting area.

[0007] Furthermore, the positioning plate, connecting rod, and indicator plate are all made of resin or metal.

[0008] Furthermore, the positioning plate covers at least three teeth.

[0009] Furthermore, the in-place inspection window has 1-3 windows.

[0010] Furthermore, the positioning inspection window is located at both ends of the dental arch.

[0011] Furthermore, the positioning inspection window is located on the buccal or labial side of the tooth.

[0012] Furthermore, the positioning inspection window is located on the occlusal surface of the tooth.

[0013] Furthermore, the indicator plate is rectangular.

[0014] Furthermore, the guide plate is manufactured using 3D printing technology.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model is designed with an indicator plate that meets the specifications according to the size of the flap to be harvested. The indicator plate is stably attached to the oral mucosa of the flap donation area with the help of the positioning plate. The surgeon can cut and harvest the flap along the outer edge of the indicator plate. The operation is convenient and the harvested soft tissue flap meets the surgical requirements. 2. The positioning plate of this utility model is provided with a positioning inspection window, which can help doctors quickly confirm the positioning status of the guide plate and reduce the adjustment time during the operation; 3. This utility model is made using 3D printing and can be customized according to the patient's oral anatomy and flap size, making it widely applicable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a simulation diagram for the use of this utility model; In the diagram: 1-positioning plate, 2-positioning inspection window, 3-connecting rod, 4-indicator plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0020] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] like Figure 1 As shown, an oral soft tissue flap harvesting guide includes a positioning plate 1 and an indicator plate 4 fixedly connected by a connecting rod 3. The positioning plate 1 is a custom-designed, denture-like structure adapted to the patient's oral cavity, fitting closely to the pre-set dentition near the flap harvesting area, and tightly conforming to the occlusal and proximal surfaces of the teeth to achieve stable retention of the guide. The positioning plate 1 is provided with at least one positioning inspection window 2 for observing whether the positioning plate 1 is in place, allowing the dentist to clearly observe the fit between the guide plate and the teeth with the aid of a mouth mirror. The indicator plate 4 is fitted to the mucosa of the oral flap donor area, and its size and shape are consistent with the size and shape of the flap to be harvested.

[0022] In this embodiment, the flap harvesting area is the patient's hard palate mucosa (a common donor site), and the positioning plate is designed to cover part of the dentition structure of 5 teeth. There are 1-3 positioning inspection windows 2, generally located away from the flap harvesting area, at both ends of the dentition, or on the buccal / lingual side of the teeth, or on the occlusal surface of the teeth. The indicator plate 4 is rectangular, consistent with the pre-designed flap size, and fits against the surface of the hard palate mucosa donor site, with its four sides corresponding to the cutting direction of the scalpel. The positioning plate 1, connecting rod 3, and indicator plate 4 are all made of resin or metal.

[0023] Preoperatively, a surgical guide is custom-made using 3D printing technology based on the patient's oral anatomy (including the dental arch structure, the location and size of the soft tissue flap). For example... Figure 2 As shown, the doctor places the guide plate inside the patient's mouth and confirms its placement through the placement inspection window 2. The confirmation method is as follows: gently shake the positioning plate 1. If the positioning plate 1 does not move significantly, and no obvious gap is observed between the positioning plate 1 and the teeth through the inspection window 2, it indicates that the guide plate is correctly positioned, and the subsequent flap retrieval operation can proceed. After confirming placement, the doctor cuts a soft tissue flap along the edge of the indicator plate 4. The entire process does not rely on experience to judge the boundaries, making the operation convenient and quick. Furthermore, through pre-planning, the nerves and blood vessels below the hard palate are effectively avoided, and the flap size is completely consistent with the preset specifications, meeting the surgical transplantation requirements.

[0024] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A guide plate for harvesting oral soft tissue flaps, characterized in that: The device includes a positioning plate (1) and an indicator plate (4) that are fixedly connected by a connecting rod (3). The positioning plate (1) is a dental crown-like structure customized based on the patient's oral cavity and is adapted to the pre-set dentition near the flap harvesting area. The positioning plate (1) is provided with at least one positioning inspection window (2) for observing whether the positioning plate (1) is in place. The indicator plate (4) is attached to the mucosa of the oral flap donor area, and its size and shape are consistent with the size and shape of the flap harvesting area.

2. The oral soft tissue flap harvesting guide plate according to claim 1, characterized in that: The positioning plate (1), connecting rod (3), and indicator plate (4) are all made of resin or metal.

3. The oral soft tissue flap harvesting guide plate according to claim 1, characterized in that: The positioning plate (1) covers at least 3 teeth.

4. The oral soft tissue flap harvesting guide plate according to claim 1, characterized in that: The in-place inspection window (2) has 1-3 windows.

5. The oral soft tissue flap harvesting guide plate according to claim 4, characterized in that: The positioning inspection window (2) is located at both ends of the dental arch.

6. The oral soft tissue flap harvesting guide plate according to claim 4, characterized in that: The placement inspection window (2) is located on the buccal or labial side of the tooth.

7. The oral soft tissue flap harvesting guide plate according to claim 4, characterized in that: The positioning inspection window (2) is located on the occlusal surface of the tooth.

8. The oral soft tissue flap harvesting guide according to claim 1, characterized in that: The indicator plate (4) is rectangular.

9. The oral soft tissue flap harvesting guide according to claim 1, characterized in that: The guide plate is made using 3D printing technology.

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