Mandibular angle surgery visual retractor with light source

Abstract

This invention belongs to the field of medical device technology, specifically relating to a visual retractor for mandibular angle surgery with a light source. It includes a handle and a working end located at one end of the handle. The working end is connected to a retractor for exposing the surgical field. The retractor is an S-shaped sheet structure, with a downward-convex C-shaped fixing part at the end away from the handle. This C-shaped fixing part extends to form a fan-shaped contact part at the end away from the handle, achieving a circumferential engagement and surface contact stress dispersion of the lower edge of the mandible. The working end of the handle integrates a near-field light source and a miniature camera device. An adjustment knob is provided on the handle, electrically connected to the light source, for controlling the on / off state of the light source and the light intensity or projection distance. The handle also contains a water pipe with its outlet located at the working end and facing the surgical area. A flushing button connected to the water pipe is located on the outer wall of the handle for triggering a saline flushing operation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a mouth angle surgery visual retractor with a light source. BACKGROUND

[0002] In the field of oral and maxillofacial surgery and facial plastic surgery, the mandibular angle region surgery (such as mandibular fracture reduction and fixation, oral tumor resection, and mandibular angle osteotomy plastic surgery) generally adopts an intraoral incision approach to meet the functional repair and facial aesthetic needs. This surgical method avoids facial skin scarring and has become the mainstream choice in clinical practice. To expose the deep mandibular angle surgical area, the operator usually relies on various types of retractor instruments for assistance. Among these instruments, the metal retractor is the most widely used. In the prior art, conventional retractors are mostly straight, L-shaped or simple arc-shaped structures, and the working end is often designed as a hook, a plate or a wide leaf. By manually pulling the soft tissue around the mouth (such as the buccinator muscle and the attachment area of the masseter muscle) or hooking the lateral bone surface of the mandibular ramus, the surgical field space is expanded. Illumination is mainly provided by a head-mounted headlamp, a surgical shadowless lamp or an external optical fiber light beam. Intraoperative observation completely relies on the naked eye of the operator, and oral mirrors are used to adjust the viewing angle when necessary. For teaching demonstrations or surgical records, an external camera system needs to be set up to collect images through a non-coaxial path, and the system cannot be linked in real time with the retraction action.

[0003] However, since the mandibular angle is located at the junction of the lower jaw and the mandibular ramus, the anatomical position is deep, surrounded by the masseter muscle, the medial pterygoid muscle and the soft tissue around the mouth, and the intraoral operating space is small and the path is tortuous. The existing retractors generally have the problems of insufficient retraction stability and insufficient exposure of the surgical field in actual application. The structure and shape of the retractor have low matching degree with the anatomical profile of the lower edge of the mandible, and the retractor is prone to slipping or requires excessive retraction force, which may cause tearing of the soft tissue around the mouth, excessive retraction of the muscle and even damage to the periosteum. At the same time, the external light source is affected by factors such as obstruction by the instrument, limited incident angle, high reflectivity in the mouth and easy bleeding, and it is difficult to provide uniform, sufficient and directionally controllable local illumination in the retracted state. The operator's field of view relies heavily on subjective experience and temporary adjustment, and lacks stable, synchronous and near-field visualization support, making it difficult to perform fine operations such as nerve protection, bone surface finishing and micro-titanium plate placement. In addition, the existing instruments do not integrate flushing, imaging and data recording functions, and multiple people and multiple devices are required to clean the blood, store key steps and observe the team during the operation, which prolongs the operation process and makes it difficult to ensure the clarity of the surgical field and the traceability of the process. SUMMARY

[0004] A mouth angle surgery visual retractor with a light source and a camera function The technical problem solved by the present application is: how to achieve safe and stable, anatomically adaptive surgical field traction exposure in the operation of the mandibular angle region with the oral approach, deep and narrow operation space, serious soft tissue obstruction and poor lighting conditions, while simultaneously providing controllable near-field illumination, real-time high-definition visual observation, instant physiological saline flushing and operation coordination support, so as to overcome the inherent limitations of traditional retractor exposure, light source obstruction, blurred vision, high risk of soft tissue damage, and difficult assistant cooperation.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: A light source-equipped oral mandibular angle surgery visual retractor, comprising a handle and a working end provided at one end of the handle, the working end being connected with a retractor for traction exposure of the surgical field; the retractor is a sheet structure with an overall S shape, and a C-shaped fixing part extending downward is provided at the end of the retractor away from the handle, and the end of the C-shaped fixing part away from the handle is extended to form a fan-shaped contact part to realize the ring-shaped clamping and surface contact stress dispersion of the lower edge of the mandible; the working end of the handle is integrally provided with a near-field light source and a miniature camera device, the optical axes of the light source and the camera device are directed towards the surgical area and are adjacent to each other in space, for synchronously providing adjustable illumination and collecting surgical field images in the traction state; an adjusting knob is provided on the handle, the knob is electrically connected with the light source, for controlling the opening and closing of the light source and the illumination intensity or projection distance; a waterway pipeline is further provided in the handle, and the water outlet of the waterway pipeline is located at the working end and directed towards the surgical area, and a flushing button in communication with the waterway pipeline is provided on the outer wall of the handle, for triggering the physiological saline flushing operation.

[0006] Preferably, the working end of the handle is further provided with a small display screen, the small display screen is signal-connected with the miniature camera device, for displaying the surgical field images collected by the camera device in real time.

[0007] Preferably, a wireless signal transmitting device is provided in the handle, the wireless signal transmitting device is signal-connected with the miniature camera device, and is configured to wirelessly transmit the collected image data to an external display device in a Wi-Fi or Bluetooth manner.

[0008] Preferably, the near-field light source is a ring-shaped LED array, the light-emitting surface of the ring-shaped LED array is arranged around the lens of the camera device, and the optical axes of each LED unit are parallel to the optical axis of the camera device.

[0009] Preferably, the miniature camera device is equipped with a wide-angle macro lens, the field of view angle of the wide-angle macro lens is not less than 110°, the nearest focusing distance is not greater than 15 mm, and the wide-angle macro lens is integrated with an automatic white balance module and a low-illumination enhancement module.

[0010] Preferably, the flushing button is a blue physical button, which is provided at the thumb-easy-touch position of the outer wall of the handle, and the surface of the button is provided with a convex point type tactile feedback structure.

[0011] Preferably, the outer wall of the handle is also provided with a recording button. The recording button is a red physical button with an annular anti-accidental touch protrusion on its edge, and is electrically connected to the miniature camera device to trigger the video recording function.

[0012] Preferably, the end of the handle away from the working end is provided with a memory card slot, which is configured to accommodate a microSD card; the miniature camera device is also equipped with an H.264 encoder for encoding the acquired image stream into a standard MP4 format video file in real time and storing it to the inserted microSD card.

[0013] Preferably, the hook is integrally formed from medical-grade titanium alloy by precision stamping and CNC bending, and its surface is sandblasted and passivated, with a roughness Ra value of 0.8–1.6 μm.

[0014] Preferably, the handle shell includes an inner rigid shell and an outer flexible grip layer; the inner shell is made of antibacterial polycarbonate material, and the outer grip layer is made of medical silicone. The two are composite molded by a hot melt nesting process, and the surface of the grip layer is provided with an anti-slip diamond texture.

[0015] Compared with the prior art, this application has at least the following beneficial effects: This invention achieves a high degree of matching with the three-dimensional anatomical morphology of the lower border of the mandible through the synergistic design of an S-shaped sheet-like hook, a downward-convex C-shaped fixation part, and a fan-shaped contact part. This allows for stable, deep, and anatomically fitted surgical field exposure with minimal traction force, significantly reducing the risk of soft tissue injuries such as corner tearing, excessive traction of the masseter muscle, and periosteal compression. The light source and miniature camera device are coaxially integrated at the working end of the handle, forming a "near-field visualization" system. This ensures that both illumination and imaging directly act on the surface of the retracted surgical area, fundamentally overcoming the problems of traditional external light sources, such as easy obstruction by instruments, limited incident angle, and severe illuminance attenuation. This ensures uniform, sufficient, and directionally controllable local illumination and high-definition real-time image output throughout the operation. The adjustment knob integrates the light source on / off function. With its multi-level parameter control function, the surgeon can easily turn the lighting on and off and make fine adjustments with just their thumb, ensuring smooth operation and rapid response. The combination of built-in water pipes and an independent flushing button supports one-button activation of directional saline flushing to promptly remove blood and debris and maintain a clear surgical field. The high integration of the above structure and functions not only significantly expands the operating space and visual accessibility in confined surgical areas, but also allows the surgeon and assistant to share a high-definition surgical field image under the same optical path, improving team collaboration efficiency and operational safety. The entire system takes into account clinical practicality, ergonomics, and medical device compliance, providing an integrated intelligent solution for precision surgery in the mandibular angle region that combines exposure, observation, cleaning, and recording capabilities. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Key reference numerals: 10. Handle; 11. Adjustment knob; 12. Rinse button; 13. Recording button; 14. Small display screen; 20. Hook; 21. Water pipe; 22. Fixing part; 221. Fan-shaped contact part; Detailed Implementation Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not 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, they should not be construed as limitations on the present invention.

[0019] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Example 1: Please refer to Figure 1This embodiment discloses a visual retractor for mandibular angle surgery with a light source, including a handle and a working end at one end of the handle. The working end is connected to a retractor for traction to expose the surgical field. The retractor is an S-shaped sheet structure, with a downward-convex C-shaped fixing part at the end away from the handle. The C-shaped fixing part extends to form a fan-shaped contact part at the end away from the handle to achieve a circumferential engagement and surface contact stress dispersion of the lower edge of the mandible. The working end of the handle integrates a near-field light source and a miniature camera device. The optical axes of the light source and the camera device face the surgical area and are spatially adjacent to each other, used to provide adjustable illumination and acquire surgical field images simultaneously under traction. The handle has an adjustment knob electrically connected to the light source for controlling the on / off state of the light source and the light intensity or projection distance. The handle also has a water pipe inside, with its outlet located at the working end and facing the surgical area. The outer wall of the handle has a flushing button connected to the water pipe for triggering a saline flushing operation.

[0021] The handle is equipped with a wireless signal transmitter, which is connected to the miniature camera and configured to wirelessly transmit the acquired image data to an external display device via Wi-Fi or Bluetooth.

[0022] The near-field light source is a ring-shaped LED array, with its light-emitting surface arranged around the lens of the camera device, and the optical axis of each LED unit is parallel to the optical axis of the camera device.

[0023] The miniature camera device is equipped with a wide-angle macro lens with a field of view of not less than 110°, a minimum focusing distance of not more than 15 mm, and integrates an automatic white balance and low-light enhancement module.

[0024] The flushing button is a blue physical button located on the outer wall of the handle where it is easily accessible to the thumb, and its surface has a raised tactile feedback structure.

[0025] The outer wall of the handle is also equipped with a recording button. This recording button is a red physical button with a ring-shaped anti-accidental touch protrusion on its edge, and is electrically connected to the miniature camera device to trigger the video recording function.

[0026] The handle is provided with a memory card slot at the end away from the working end, which is configured to accommodate a microSD card; the miniature camera device is also equipped with an H.264 encoder, which is used to encode the acquired image stream into a standard MP4 format video file in real time and store it to the inserted microSD card.

[0027] The hook is integrally formed from medical-grade titanium alloy through precision stamping and CNC bending. Its surface is sandblasted and passivated, with a roughness Ra value of 0.8–1.6 μm.

[0028] The handle shell includes an inner rigid shell and an outer flexible grip layer; the inner shell is made of antibacterial polycarbonate material, and the outer grip layer is made of medical silicone. The two are composite molded by a hot melt nesting process, and the surface of the grip layer is provided with an anti-slip diamond texture.

[0029] During use, the hook's locking part penetrates and engages with the lower edge of the mandible; pulling outward exposes the surgical area. Turning the knob at the end of the handle with your thumb turns on the light source, and the large display screen simultaneously shows the surgical area image, facilitating observation by surgical assistants and other personnel. Continuing to turn the knob adjusts the light source's depth. Pressing the blue button activates the flushing mode, allowing the surgical area to be rinsed with saline solution for a clear view. Pressing the red button activates the recording mode. This invention can reach deep into the mandibular angle region, reducing tearing at the corner of the mouth and protecting soft tissue. It fully exposes and expands the operating space in this area, improves lighting, and provides a clearer surgical field. The surgical procedure can be displayed and stored on a large screen, facilitating observation, learning, and data recording by other personnel.

[0030] Example 2: For the sake of brevity, only the differences from Embodiment 1 described above will be described.

[0031] Please refer to the following: Figure 2 In this embodiment, the working end of the handle is also equipped with a small display screen, which is connected to the miniature camera device for real-time display of surgical field images captured by the camera device. The small display screen allows the surgeon and assistant to conveniently view the surgical area.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A visual retractor for mandibular angle surgery with a light source, comprising a handle and a working end disposed at one end of the handle, wherein the working end is connected to a retractor for pulling to expose the surgical field; characterized in that: The retractor is an S-shaped sheet structure with a downward-convex C-shaped fixing part at the end away from the handle. This C-shaped fixing part extends to form a fan-shaped contact part, which achieves a circumferential engagement and surface contact stress dispersion of the lower edge of the mandible. The working end of the handle integrates a near-field light source and a miniature camera device. The optical axes of the light source and the camera device are oriented towards the surgical area and are spatially adjacent to each other, which is used to provide adjustable illumination and acquire surgical field images simultaneously under traction. The handle is equipped with an adjustment knob, which is electrically connected to the light source and is used to control the on / off state of the light source and the light intensity or projection distance. The handle also has a water pipe inside, with its outlet located at the working end and facing the surgical area. The outer wall of the handle is equipped with a flushing button connected to the water pipe, which is used to trigger the saline flushing operation.

2. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The working end of the handle is also equipped with a small display screen, which is connected to the miniature camera device for real-time display of surgical field images captured by the camera device.

3. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The handle is equipped with a wireless signal transmitter, which is connected to the miniature camera and configured to wirelessly transmit the acquired image data to an external display device via Wi-Fi or Bluetooth.

4. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The near-field light source is a ring-shaped LED array, with its light-emitting surface arranged around the lens of the camera device, and the optical axis of each LED unit is parallel to the optical axis of the camera device.

5. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The miniature camera device is equipped with a wide-angle macro lens with a field of view of not less than 110°, a minimum focusing distance of not more than 15 mm, and integrates an automatic white balance and low-light enhancement module.

6. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The flushing button is a blue physical button located on the outer wall of the handle where it is easily accessible to the thumb, and its surface has a raised tactile feedback structure.

7. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The outer wall of the handle is also equipped with a recording button. This recording button is a red physical button with a ring-shaped anti-accidental touch protrusion on its edge, and is electrically connected to the miniature camera device to trigger the video recording function.

8. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The handle is provided with a memory card slot at the end away from the working end, which is configured to accommodate a microSD card; the miniature camera device is also equipped with an H.264 encoder, which is used to encode the acquired image stream into a standard MP4 format video file in real time and store it to the inserted microSD card.

9. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The hook is integrally formed from medical-grade titanium alloy through precision stamping and CNC bending. Its surface is sandblasted and passivated, with a roughness Ra value of 0.8–1.6 μm.

10. The visual retractor for mandibular angle surgery with a light source according to claim 1, characterized in that: The handle shell includes an inner rigid shell and an outer flexible grip layer; the inner shell is made of antibacterial polycarbonate material, and the outer grip layer is made of medical silicone. The two are composite molded by a hot melt nesting process, and the surface of the grip layer is provided with an anti-slip diamond texture.

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