Retraction device for assisting in chin plasty

Abstract

The utility model provides a retractor for assisting in chin plasty. The retractor comprises a base rod, a first connecting rod, a first distraction component, a second connecting rod and a second distraction component. The first connecting rod and the second connecting rod are both connected to the base rod and can move between a first relative position where the first connecting rod and the second connecting rod are close to each other and a second relative position where the second connecting rod is away from each other in the axis extending direction of the base rod. The first opening component and the second opening component are fixed to the first connecting rod and the second connecting rod respectively, the first opening component and the second opening component can stretch into the mouth of a person, and when the first connecting rod and the second connecting rod move from the first relative position to the second relative position, the first opening component and the second opening component can stretch into the mouth of the person. The first connecting rod and the second connecting rod drive the first opening part and the second opening part to open the mouth corners on the two sides of a person respectively. The oral cavity expanding device can expand the oral cavity of a person in the working process of an oral approach chin plasty surgical robot, and has the advantages of convenience, safety and effectiveness at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a retraction device for assisting genioplasty, which is applied to robot-assisted surgery. Background Art

[0002] Traditional genioplasty surgery typically requires the collaboration of at least three surgeons. During the procedure, assistants use surgical retractors to pull the lower lip and corners of the mouth to expose the surgical area. Both surgical safety and stability rely heavily on the surgeon's experience and feel. With the development and application of medical surgical robots, surgical precision, safety, and stability have improved to a certain extent. However, as the primary operator has shifted from a human to a robotic arm, the robot occupies the original surgical space, reducing the number of surgical assistants. Therefore, surgical retraction and protective devices in the surgical space should be modified to accommodate the characteristics of robotic surgery. Currently, no mature genioplasty surgical robot products have been marketed and clinically used; most are still in the preclinical model and animal testing stages. Furthermore, no studies have reported on surgical retraction devices developed specifically for genioplasty surgery. Therefore, it is necessary to design and develop a suitable intraoperative retraction device for genioplasty robotic surgery via the transoral approach. Utility Model Content

[0003] The purpose of the utility model is to provide a retraction device for assisting genioplasty, which can open the human oral cavity during the operation of a transoral genioplasty robot, thereby ensuring the smooth operation of the genioplasty robot.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0005] A distraction device for assisting genioplasty, comprising: a base rod, a first connecting rod, a first distraction component, a second connecting rod and a second distraction component;

[0006] The first connecting rod and the second connecting rod are both connected to the base rod, and can be converted and moved along the axis extension direction of the base rod between a first relative position close to each other and a second relative position away from each other;

[0007] The first spreading part and the second spreading part are respectively fixed on the first connecting rod and the second connecting rod, and the first spreading part and the second spreading part can both be extended into a person's mouth. When the first connecting rod and the second connecting rod move from the first relative position toward the second relative position, the first connecting rod and the second connecting rod respectively drive the first spreading part and the second spreading part to spread the corners of the person's mouth.

[0008] Preferably, the first connecting rod is fixedly connected to the base rod, and the second connecting rod is movably connected to the base rod.

[0009] Preferably, a first connecting hole is provided on the second connecting rod, and the second connecting rod is sleeved on the base rod through the first connecting hole. The base rod can move relative to the second connecting rod along its own axis in the first connecting hole.

[0010] Preferably, it further comprises a positioning screw;

[0011] A positioning screw hole matching the positioning screw is provided on the side wall of the first connecting hole. The positioning screw is threadedly connected in the positioning screw hole and can be screwed into the positioning screw hole to abut against the base rod.

[0012] Preferably, it further comprises a driving mechanism;

[0013] The driving mechanism is arranged on the base rod and is transmission-connected with the second connecting rod to drive the second connecting rod to move on the base rod.

[0014] Preferably, it further comprises a lip hook component;

[0015] Assuming that the connection position between the first connecting rod and the base rod is a first connection position, and the connection position between the second connecting rod and the base rod is a second connection position, the lip member can be movably connected to a position on the base rod between the first connection position and the second connection position, so that the lip member can move in a direction perpendicular to the axis of the base rod;

[0016] One end of the lip hook component can be extended into a person's mouth, so that the lip hook component can pull the person's lips apart when moving in a direction perpendicular to the axis of the base rod.

[0017] Preferably, it further includes an adjustment block;

[0018] The adjusting block is provided with a second connecting hole, and the adjusting block is sleeved on the base rod at a position between the first connecting position and the second connecting position through the second connecting hole, so that the adjusting block can move on the base rod along the axis extension direction of the base rod, and the lip hook component can be movably connected to the adjusting block.

[0019] Preferably, the lip hook component includes a connecting plate and a lip hook plate fixedly connected together;

[0020] The lip hook component is movably connected to the adjustment block through the connecting plate and extends into the mouth of a person through the lip hook plate.

[0021] Preferably, an angle is formed between the connecting plate and the lip hook plate, and the two are integrally formed and bent.

[0022] Preferably, it further comprises a limiting screw and a fixing nut matching the limiting screw;

[0023] One end of the limit screw is fixed to the adjustment block, and the other end is in a free state. The axis of the limit screw extends in a direction perpendicular to the axis of the base rod. The connecting plate is provided with a waist hole. The connecting plate is sleeved on the limit screw through the waist hole. The long axis of the waist hole extends in a direction perpendicular to the axis of the base rod. The fixing nut is threadedly connected to the limit screw to fix the connecting plate to the adjustment block.

[0024] The retraction device for assisting genioplasty of the present invention adopts the first expansion component and the second expansion component to be fixed on the first connecting rod and the second connecting rod respectively, and the first expansion component and the second expansion component can be extended into the human mouth. When the first connecting rod and the second connecting rod move from the first relative position toward the second relative position, the first connecting rod and the second connecting rod respectively drive the first expansion component and the second expansion component to expand the corners of the human mouth on both sides. The technical solution can expand the human mouth during the operation of the genioplasty surgical robot through the oral approach, which can not only ensure the smooth operation of the genioplasty surgical robot, but also has the advantages of convenience, safety and effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of an embodiment of a retraction device for assisting genioplasty according to the present invention;

[0026] Figure 2 yes Figure 1 A-A cross-sectional diagram in FIG;

[0027] Figure 3 yes Figure 1 Schematic diagram of the B-B section in FIG;

[0028] Figure 4 This is a schematic diagram of the use state of the utility model of this application;

[0029] Figure 5 for Figure 1 Schematic diagram of the partial structure of the middle lip hook component.

[0030] In the figure: 1-base rod; 2-first connecting rod; 3-first expansion part; 4-second connecting rod; 5-second expansion part; 6-first connecting hole; 7-positioning screw; 8-positioning screw hole; 9-lip hook part; 10-adjustment block; 11-second connecting hole; 12-connecting plate; 13-lip hook plate; 14-limiting screw; 15-fixing nut; 16-lumbar hole, 17-bone holder; 171-robotic arm connecting end; 172-mandibular fixed end; 18-operation hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following further describes the present invention's assisted genioplasty retraction device in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention.

[0032] Example 1

[0033] like Figure 1 、 Figure 4 As shown, a distraction device for assisting genioplasty comprises: a base rod 1, a first connecting rod 2, a first spreading member 3, a second connecting rod 4, and a second spreading member 5. The first connecting rod 2 and the second connecting rod 4 are both connected to the base rod 1 and can move between a first relative position close to each other and a second relative position away from each other along the axis of the base rod 1. The first spreading member 3 and the second spreading member 5 are respectively fixed to the first connecting rod 2 and the second connecting rod 4, and the first spreading member 3 and the second spreading member 5 can both be inserted into a person's mouth. When the first connecting rod 2 and the second connecting rod 4 move from the first relative position to the second relative position, the first connecting rod 2 and the second connecting rod 4 respectively drive the first spreading member 3 and the second spreading member 5 to spread the corners of the person's mouth. It should be noted that in actual production, the material of the first spreading member 3 and the second spreading member 5 can be a non-steel material such as polyurethane or other organic materials to avoid damage to the person's oral tissue, and their shapes can be made to match the corners of the person's mouth. In the initial state, the first connecting rod 2 and the second connecting rod 4 are located in a first relative position. When in use, the first expansion part 3 and the second expansion part 5 can be first extended into the human mouth, and then the first connecting rod 2 and the second connecting rod 4 can be adjusted to the second relative position. At this time, the first expansion part 3 and the second expansion part 5 are respectively against the two corners of the human mouth, and the human mouth is expanded, so that the surgical area of ​​the genioplasty surgery can be fully exposed. Compared with the existing technology, it can not only liberate the doctor, but also protect the soft tissue and ensure the safety of the operation.

[0034] Specifically, the first connecting rod is fixedly connected to the base rod 1, and the second connecting rod 4 is movably connected to the base rod 1. In this way, the first connecting rod 2 and the second connecting rod 4 can be switched between the first relative position and the second relative position by moving the second connecting rod 4 on the base rod 1 along the axis of the base rod 1.

[0035] Further, if Figure 2 As shown, a first connecting hole 6 is provided on the second connecting rod 4, and the second connecting rod 4 is sleeved on the base rod 1 through the first connecting hole 6. The base rod 1 can move relative to the second connecting rod 4 along its own axis in the first connecting hole 6. Figure 2 As shown, the first connecting hole 6 further includes a positioning screw 7. A positioning screw hole 8 matching the positioning screw 7 is provided on the side wall of the first connecting hole 6. The positioning screw 7 is threadedly connected to the positioning screw hole 8 and can be screwed into the positioning screw hole 8 to abut against the base rod 1. In this way, when the first connecting rod 2 and the second connecting rod 4 are in the second relative position (i.e., the first spreading part 3 and the second spreading part 5 spread the corners of the person's mouth), the second connecting rod 4 can be fixed to the base rod 1 via the positioning screw 7 to achieve relative positioning between the first connecting rod 2 and the second connecting rod 4, thereby maintaining the distance between the first spreading part 3 and the second spreading part 5.

[0036] In actual production, a drive mechanism (not shown) may also be included. The drive mechanism is disposed on the base rod 1 and is in transmission connection with the second connecting rod 4 to drive the second connecting rod 4 to move on the base rod 1. The drive mechanism may be any mechanism or device such as a screw mechanism that can achieve the purpose of the present invention.

[0037] Example 2

[0038] Based on Example 1, Figure 1 、 3 As shown in Figure 4, it also includes a lip-tightening component 9. Assuming that the connection position of the first connecting rod 2 and the base rod 1 is the first connection position, and the connection position of the second connecting rod 4 and the base rod 1 is the second connection position, the lip-tightening component 9 can be movably connected to a position between the first connection position and the second connection position on the base rod 1, so that the lip-tightening component 9 can move in a direction perpendicular to the axis of the base rod 1. One end of the lip-tightening component 9 can be inserted into the person's mouth so that the lip-tightening component 9 can pull the person's lips apart when moving in a direction perpendicular to the axis of the base rod 1. Using such a technical solution, while the first and second stretching components 3 and 5 stretch the corners of the person's mouth, the lip-tightening component 9 can pull the person's lips apart, thereby exposing the surgical area of ​​the genioplasty surgery more fully.

[0039] Specifically, if Figure 3As shown, the device further includes an adjustment block 10 having a second connection hole 11. The adjustment block 10 is mounted on the base rod 1 between the first connection position and the second connection position through the second connection hole 11, so that the adjustment block 10 can move on the base rod 1 along the axis of the base rod 1. The lip hook component 9 is movably connected to the adjustment block 10. This technical solution allows the adjustment block 10 to drive the lip hook component 9 to move along the axis of the base rod 1, thereby adjusting the position of the lip hook component 9 pulling on the lips, thereby ensuring user comfort.

[0040] Furthermore, if Figure 1 、 3 As shown, the lip hook component 9 includes a connecting plate 12 and a lip hook plate 13 that are fixedly connected together. The lip hook component 9 is movably connected to the adjustment block 10 via the connecting plate 12 and extends into the human mouth through the lip hook plate 13. In actual production, an angle is formed between the connecting plate and the lip hook plate 13, and the two are integrally formed and bent.

[0041] As an implementable method, Figure 3 As shown, it also includes a limit screw 14 and a fixing nut 15 that matches the limit screw 14. One end of the limit screw 14 is fixed to the adjustment block 10, and the other end is in a free state. The axis extension direction of the limit screw 14 is perpendicular to the axis extension direction of the base rod 1. The connecting plate 12 is provided with a waist hole 16. The connecting plate 12 is sleeved on the limit screw 14 through the waist hole 16, and the long axis extension direction of the waist hole 16 is perpendicular to the axis extension direction of the base rod 1. The fixing nut 15 is threadedly connected to the limit screw 14 to fix the connecting plate 12 to the adjustment block 10. In actual use, the lip hooking plate 13 is inserted into the mouth of a person and hooked on the lips. The connecting plate 12 can then be manually pulled to cause the lip hooking plate 13 to pull the lips apart. At this time, the movement of the connecting plate 12 is actually relative to the limit screw 14 inserted into the waist hole 16 along the longitudinal axis of the waist hole. When the lips are pulled apart, the connecting plate 12 is fixed to the adjustment block 10 by tightening the fixing nut 15, so that the lips remain in the pulled apart state. The fixing nut 15 can be a butterfly nut, but is not limited to this.

[0042] For example, taking the application in oral and maxillofacial surgery as an example, see Figure 4To complement the transoral genioplasty robot, a bone holder 17 is added as a robot accessory. The bone holder 17 comprises a robotic arm connection end 171 and a mandibular fixation end 172. The mandibular fixation end 172 is directly fixed to the chin bone surface of the mandible and connected to the actuator at the end of the robotic arm via the robotic arm connection end 171 to complete intraoperative mandibular registration. The robotic arm connection end 171 is detachable. After mandibular registration is complete, the robotic arm connection end 171 is removed from the actuator, and an instrument such as a high-speed handpiece or ultrasonic osteotome is installed on the actuator to perform surgical procedures such as drilling and osteotomy. The robotic arm connection end 171 is then reattached to the actuator to identify and locate the free bone fragment after osteotomy. The robotic arm then drives the bone holder 17 and the chin bone fragment along the pre-planned path toward the target position (the target position is the predetermined position in the pre-operative surgical plan). At this point, the bone block is positioned and fixed, completing the genioplasty operation. Thus, the bone holder 17 serves to clamp, guide, and position the free chin bone block during the operation, facilitating accurate and safe movement and positioning of the bone block according to the preoperative genioplasty plan.

[0043] See also Figure 4 and Figure 5 Since the bone holder 17 is fixed on the chin bone surface of the mandible, there may be physical space interference with the lip hook component 9, and it may also hinder the robot from performing surgical operations. Therefore, in order to avoid the mutual interference of the lip hook component 9 with the bone holder 17 and to facilitate the robot to perform surgical operations, an operation hole 18 is provided on the lip hook component 9, and lip hook plates 13 are provided on both sides of the operation hole 18, and the lip hook plates 13 are symmetrically arranged.

[0044] The retraction device for assisting genioplasty is applied in the field of surgical robot technology. It is a key retraction device for assisting operators. It can assist doctors in performing oral and dental surgery, save time, reduce patients' pain, and be adapted to operations in surgical robot scenarios.

[0045] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A retraction device for assisting genioplasty, characterized by: include: A base rod (1), a first connecting rod (2), a first expansion member (3), a second connecting rod (4), and a second expansion member (5); The first connecting rod (2) and the second connecting rod (4) are both connected to the base rod (1), and are capable of switching between a first relative position close to each other and a second relative position away from each other along the axial extension direction of the base rod (1); The first spreading part (3) and the second spreading part (5) are fixed on the first connecting rod (2) and the second connecting rod (4), respectively, and the first spreading part (3) and the second spreading part (5) can both be extended into a person's mouth. When the first connecting rod (2) and the second connecting rod (4) move from the first relative position toward the second relative position, the first connecting rod (2) and the second connecting rod (4) respectively drive the first spreading part (3) and the second spreading part (5) to spread the two corners of the person's mouth.

2. The retraction device for assisting genioplasty according to claim 1, characterized in that: The first connecting rod (2) is fixedly connected to the base rod (1), and the second connecting rod (4) is movably connected to the base rod (1).

3. The retraction device for assisting genioplasty according to claim 2, characterized in that: A first connecting hole (6) is provided on the second connecting rod (4), and the second connecting rod (4) is sleeved on the base rod (1) through the first connecting hole (6). The base rod (1) can move relative to the second connecting rod (4) along its own axial direction in the first connecting hole (6).

4. The retraction device for assisting genioplasty according to claim 3, characterized in that: The retraction device also includes a positioning screw (7); A positioning screw hole (8) matching the positioning screw (7) is provided on the side wall of the first connecting hole (6); the positioning screw (7) is threadedly connected in the positioning screw hole (8) and can be screwed into the positioning screw hole (8) to abut against the base rod (1).

5. The retraction device for assisting genioplasty according to claim 2, characterized in that: The retraction device also includes a driving mechanism; The driving mechanism is arranged on the base rod (1) and is transmission-connected to the second connecting rod (4) to drive the second connecting rod (4) to move on the base rod (1).

6. The retraction device for assisting genioplasty according to any one of claims 1 to 5, characterized in that: Also includes a lip hook component (9); Assuming that the connection position of the first connecting rod (2) and the base rod (1) is a first connection position, and the connection position of the second connecting rod (4) and the base rod (1) is a second connection position, the lip hook component (9) can be movably connected to a position between the first connection position and the second connection position on the base rod (1), so that the lip hook component (9) can move in a direction perpendicular to the axis of the base rod (1); One end of the lip hook component (9) can be inserted into a person's mouth, so that the lip hook component (9) can pull the person's lips apart when moving in a direction perpendicular to the axis of the base rod (1).

7. The retraction device for assisting genioplasty according to claim 6, characterized in that: Also included is an adjustment block (10); The adjustment block (10) is provided with a second connection hole (11), and the adjustment block (10) is sleeved on the base rod (1) at a position between the first connection position and the second connection position through the second connection hole (11), so that the adjustment block (10) can move on the base rod (1) along the axial extension direction of the base rod (1), and the lip hook component (9) can be movably connected to the adjustment block (10).

8. The retraction device for assisting genioplasty according to claim 7, characterized in that: The lip hook component (9) comprises a connecting plate (12) and a lip hook plate (13) fixedly connected together; The lip hook component (9) is movably connected to the adjustment block (10) via the connecting plate (12) and extends into the human mouth via the lip hook plate (13).

9. The retraction device for assisting genioplasty according to claim 8, characterized in that: An angle is formed between the connecting plate (12) and the lip hook plate (13), and the two are integrally formed and bent.

10. The retraction device for assisting genioplasty according to claim 8, characterized in that: It also includes a limiting screw (14) and a fixing nut (15) matching the limiting screw (14); One end of the limiting screw (14) is fixed on the adjustment block (10), and the other end is in a free state, and the axial extension direction of the limiting screw (14) is perpendicular to the axial extension direction of the base rod (1), and a waist hole (16) is provided on the connecting plate (12), and the connecting plate (12) is sleeved on the limiting screw (14) through the waist hole (16), and the long axis extension direction of the waist hole (16) is perpendicular to the axial extension direction of the base rod (1), and the fixing nut (15) is threadedly connected to the limiting screw (14) to fix the connecting plate (12) on the adjustment block (10).

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