Auxiliary scribing and simulating device for double-fold eyelid surgery

Abstract

The invention relates to the technical field of double-fold eyelid operation auxiliary tools, in particular to a double-fold eyelid operation auxiliary lineation and simulation device which comprises a fixed middle rod, a nose head fixator, a sliding middle rod and two double-fold eyelid designers. The nose fixator is arranged at one end of the fixed middle rod, the sliding middle rod is assembled at the other end of the fixed middle rod in a sliding mode, the double-fold eyelid designer comprises designer handles and a bendable arc-shaped steel wire, a fixing buckle is arranged on the sliding middle rod, and the two designer handles are detachably assembled on the two opposite sides of the fixing buckle; a sliding buckle is assembled on the fixed middle rod in a sliding mode, an elastic rope is arranged between the end, away from the designer handle, of the bendable arc-shaped steel wire and the side portion of the sliding buckle, and scale marks are arranged on the peripheral wall of the fixed middle rod. The sliding middle rod is further provided with an auxiliary fixing part. According to the auxiliary scribing and simulating device for the double-fold eyelid operation, the two hands of a doctor are liberated, and the doctor can conveniently simulate the form of a patient after the double-fold eyelid operation for a long time.

Description

Technical Field

[0001] The present application relates to the technical field of double eyelid surgery auxiliary tools, and in particular to a double eyelid surgery auxiliary delineation and simulation device. Background Art

[0002] Blepharoplasty, also known as double eyelid surgery, is one of the most common surgeries in plastic and cosmetic surgery. The surgical methods are different for different blepharoplasty cases. It is generally divided into two categories: incision method and buried suture method. Each category has derived many kinds of surgical procedures, adding up to no less than a hundred, but no matter what surgical procedure is adopted, the basic principles and methods are the same. Even if the eyelid skin is connected to the levator palpebrae superioris aponeurosis, the upper eyelid skin can be sunken to form a double eyelid groove when the eyes are opened. Before double eyelid surgery, the double eyelid line needs to be designed to ensure the effect of the operation. The line drawing methods in the prior art are mostly manual lines drawn on the patient's skin surface based on the doctor's experience, and the accuracy is relatively low.

[0003] After searching, the Chinese patent with application number: 201920380024.2 discloses a double eyelid effect designer, including a positioning assembly and a support rod, the positioning assembly includes a positioning rod and a line drawing rod, the midpoint of the positioning rod and the line drawing rod is connected to the support rod, the positioning rod and the line drawing rod are both arc-shaped, the positioning rod is connected to the support rod through a first hinge rod, the upper end of the first hinge rod is hinged to the positioning rod, the lower end is hinged to the sliding sleeve on the support rod, the sliding sleeve is sleeved on the support rod and slidably connected to the support rod, the support rod is provided with an external thread, and the top of the sliding sleeve is provided with a nut that matches the thread of the support rod; the positioning rod is also connected to the support rod through a second hinge rod, the bottom of the second hinge rod is hinged to the support rod, and the top is connected to the first ring on the positioning rod, and the first ring on the positioning rod and the second ring on the line drawing rod are connected by a connecting rod. Among them, a protractor is fixedly installed on the support rod, the protractor is connected to the support rod through a support rod, and the protractor is concentrically arranged with the positioning rod. The protractor can be used to measure the angle of the drawing line, and a handle is provided at the bottom of the support rod for easy holding, and the handle is provided with anti-slip grooves or an anti-slip cover.

[0004] With respect to the common double eyelid effect designer similar to the above, the inventor believes that there are the following technical defects to be improved:

[0005] 1. The positioning rod and the line drawing rod are rigid in structure, not flexible enough and difficult to bend and deform, which is not enough to meet the needs of double eyelid surgery for patients with different eye shapes and eye sizes;

[0006] 2. The structure of the double eyelid designer is too different from that of the traditional one, and the usage habits of existing surgeons are also very different. The operation proficiency training required for double eyelid surgery using this device is high, and it is difficult to use and become proficient in it, so it is not suitable for widespread promotion and application;

[0007] 3. The patient's face is a non-planar structure. When the doctor holds the handle and places the structurally fixed positioning rod and drawing rod near the eyes, and uses a protractor, the patient's nose will inevitably hinder the doctor's hand from holding the handle, making it difficult for the surgeon to operate flexibly, and it is difficult to assist in drawing accurate double eyelid lines on the patient's eyelid skin. Summary of the invention

[0008] The present application provides a double eyelid surgery auxiliary marking and simulation device to improve the following technical problems:

[0009] Common double eyelid effect designers are not sufficient to meet the double eyelid surgery needs of patients with different eye shapes and eye sizes. They are difficult to use and become proficient in, and are not suitable for widespread promotion and application. They cannot facilitate the surgeon's flexible operation.

[0010] The present application provides a double eyelid surgery auxiliary marking and simulation device, which adopts the following technical solutions:

[0011] A double eyelid surgery auxiliary marking and simulation device, comprising a fixed middle rod, a nose tip fixer, a sliding middle rod and two double eyelid designers;

[0012] The nose holder is arranged at one end of the fixed middle rod, the sliding middle rod is slidably assembled at the other end of the fixed middle rod, the sliding middle rod and the fixed middle rod are arranged on the same central axis, the double eyelid designer comprises a designer handle and a bendable arc-shaped steel wire, the sliding middle rod is provided with a fixing buckle, the designer handle is arranged along the length direction of the sliding middle rod, and two groups of the designer handles are detachably assembled on opposite sides of the fixing buckle;

[0013] The fixed middle rod is slidably equipped with a sliding buckle, an elastic rope is arranged between the end of the bendable arc steel wire away from the designer handle and the side of the sliding buckle, scale lines are arranged on the outer peripheral wall of the fixed middle rod, and the sliding buckle can slide freely and be fixed along the length direction of the fixed middle rod within the range of the scale lines. An auxiliary fixing part is also arranged on the sliding middle rod, and the auxiliary fixing part is adjacent to the connection between the designer handle and the bendable arc steel wire.

[0014] In an achievable technical solution of the present application, the nose holder includes a hinged portion and a nose cover, the nose cover is rotatably connected to the end of the fixed middle rod through the hinged portion, the rotation axis of the hinged portion is perpendicular to the length direction of the fixed middle rod, and the nose cover is made of elastic rubber material and is wrapped and fixed on the patient's nose.

[0015] In an achievable technical solution of the present application, a locking bolt is threadedly assembled on the sliding buckle, one end of the locking bolt is used to tighten the outer peripheral wall of the fixed middle rod, and the locking bolt and the scale line are respectively located on opposite sides of the fixed middle rod.

[0016] In a feasible technical solution of the present application, the sliding buckle is made of elastic silicone material, and the sliding buckle and the fixed middle rod are relatively fixed by static sliding friction.

[0017] In a feasible technical solution of the present application, a first fixing ring is provided at the end of the bendable arc-shaped steel wire away from the designer handle, a second fixing ring is provided on the side of the sliding buckle, and both ends of the elastic rope are respectively connected to the first fixing ring and the second fixing ring.

[0018] In an achievable technical solution of the present application, two triangular indicating parts are further provided on the sliding buckle, and the triangular indicating parts are used to indicate the corresponding scale lines, and the two triangular indicating parts are respectively located on opposite sides of the scale lines.

[0019] In a feasible technical solution of the present application, a spiral buckle is provided in the middle of the designer handle, and spiral grooves adapted to the spiral buckle are respectively provided on both sides of the fixing buckle, and the spiral buckle is rotatably and detachably assembled in the spiral groove.

[0020] In a feasible technical solution of the present application, the diameter of the middle part of the designer handle gradually decreases to form a clamping portion, and clamping grooves adapted to the clamping portion are respectively provided on both sides of the fixing buckle, and the clamping portion can be detachably clamped in the clamping groove.

[0021] In an achievable technical solution of the present application, the auxiliary fixing portion includes a rotating seat and two groups of adhesive components. The rotating seat is rotatably assembled on the fixed middle rod, and the adjacent ends of the two groups of adhesive components are rotatably connected to the opposite sides of the rotating seat respectively. The adhesive components are used to be bonded and fixed to the skin on both sides of the patient's nose bridge.

[0022] In an achievable technical solution of the present application, the adhesive assembly includes a flexible rotating rod and a hydrogel adhesive, one end of the flexible rotating rod is hinged to the rotating seat, the hydrogel adhesive is bonded and fixed to the flexible rotating rod, and the flexible rotating rod is a silicone member or a rubber member.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] The variable structure design of the bendable arc steel wire and elastic rope is very soft and easy to bend and deform, which can meet the needs of double eyelid surgery for patients with different eye shapes and different eye sizes;

[0025] The structure of the double-eyelid designer is basically the same as the currently commonly used handheld unilateral designer, which perfectly matches the usage habits of existing surgeons. The proficiency of using the device for double-eyelid surgery does not require a lot of training, and it is easy to use and become proficient, making it suitable for widespread promotion and application.

[0026] The added nose tip fixer and auxiliary fixing part can better adapt to the non-planar face structure of the patient. When in use, the surgeon does not need to fix it with fingers, freeing the surgeon's hands to fix the device on the patient's face. This makes it convenient for the surgeon to simulate the postoperative shape of the patient's double eyelids for a long time, so that the patient has a longer time to judge whether he is satisfied with the double eyelid shape.

[0027] The relative position of the scale lines on the sliding buckle and the fixed middle rod can provide intuitive measurement and reference for the width of the surgical line, which is sufficient to replace the commonly used and large protractor, simplify the overall structure, facilitate the surgeon's flexible operation, and can effectively assist in drawing accurate double eyelid lines on the patient's eyelid skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of the double-eyelid surgery auxiliary marking and simulation device of the first embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the nose holder in the first embodiment of the present application in use.

[0031] Figure 3 It is a schematic diagram of the use status of the auxiliary fixing part in Example 1 of the present application.

[0032] Figure 4 It is a schematic diagram of the structure of the designer handle and fixing buckle in Example 1 of the present application.

[0033] Figure 5 This is a schematic diagram of the structure of the double eyelid surgery auxiliary marking and simulation device of the second embodiment of the present application.

[0034] Figure 6It is a schematic diagram of the structure of the designer handle and fixing buckle in the second embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Fix the middle pole;

[0037] 2. Nose tip fixer; 21. hinged portion; 22. Nose tip cover;

[0038] 3. Slide the middle rod;

[0039] 4. Double eyelid designer; 41. Designer handle; 411. Screw buckle; 412. Snap-on part; 42. Bendable arc-shaped steel wire; 421. First fixing ring;

[0040] 5. fixing buckle; 51. spiral card slot; 52. card groove;

[0041] 6. Sliding buckle; 61. Locking bolt; 62. Second fixing ring; 63. Triangular indicator;

[0042] 7. Elastic rope;

[0043] 8. Scale line;

[0044] 9. Auxiliary fixing part; 91. Rotating seat; 92. Pasting component; 921. Flexible rotating rod; 922. Hydrogel pasting. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] The following is combined with Figure 1-6 This application is described in further detail.

[0050] Embodiment 1

[0051] The first embodiment of the present application discloses a double eyelid surgery auxiliary marking and simulation device. Figure 1 The double eyelid surgery auxiliary marking and simulation device includes a fixed middle rod 1, a nose tip fixer 2, a sliding middle rod 3 and two double eyelid designers 4;

[0052] The nose holder 2 is arranged at one end of the fixed middle rod 1, the sliding middle rod 3 is slidably assembled at the other end of the fixed middle rod 1, the sliding middle rod 3 and the fixed middle rod 1 are arranged on the same central axis, the double eyelid designer 4 includes a designer handle 41 and a bendable arc-shaped steel wire 42, the sliding middle rod 3 is provided with a fixing buckle 5, the designer handle 41 is arranged along the length direction of the sliding middle rod 3, and two sets of designer handles 41 are detachably assembled on opposite sides of the fixing buckle 5;

[0053] A sliding buckle 6 is slidably assembled on the fixed middle rod 1, and an elastic rope 7 is arranged between the end of the bendable arc steel wire 42 away from the designer handle 41 and the side of the sliding buckle 6. Scale lines 8 are arranged on the outer peripheral wall of the fixed middle rod 1. The sliding buckle 6 can slide freely and be fixed along the length direction of the fixed middle rod 1 within the range of the scale lines 8. An auxiliary fixing part 9 is also arranged on the sliding middle rod 3, and the auxiliary fixing part 9 is adjacent to the connection between the designer handle 41 and the bendable arc steel wire 42.

[0054] In this embodiment, in order to ensure that the sliding buckle 6 will not be easily moved, thereby giving the surgeon enough time and space to draw lines, a locking bolt 61 is threadedly assembled on the sliding buckle 6, and one end of the locking bolt 61 is used to tighten the outer peripheral wall of the fixed middle rod 1, and the locking bolt 61 and the scale line 8 are respectively located on the opposite sides of the fixed middle rod 1.

[0055] In this embodiment, in order to facilitate the firm installation and connection of the elastic rope 7, a first fixing ring 421 is provided at the end of the bendable arc steel wire 42 away from the designer handle 41, and a second fixing ring 62 is provided on the side of the sliding buckle 6, and the two ends of the elastic rope 7 are respectively connected to the first fixing ring 421 and the second fixing ring 62.

[0056] In this embodiment, in order to improve the correspondence accuracy between the sliding buckle 6 and the scale line 8, two triangular indicating parts 63 are further provided on the sliding buckle 6. The triangular indicating parts 63 are used to indicate the corresponding scale line 8. The two triangular indicating parts 63 are respectively located on the opposite sides of the scale line 8, so as to facilitate the surgeon to accurately read the value, thereby providing intuitive measurement and reference for the surgical marking width.

[0057] In this embodiment, please refer to Figure 1 and Figure 2 The nose holder 2 includes a hinged portion 21 and a nose cover 22. The nose cover 22 is rotatably connected to the end of the fixed middle rod 1 through the hinged portion 21. The rotation axis of the hinged portion 21 is perpendicular to the length direction of the fixed middle rod 1. The nose cover 22 is made of elastic rubber and is wrapped and fixed on the patient's nose.

[0058] The nose holder 2 designed above has a simple structure and is very convenient to assemble and use. The nose cover 22 made of elastic rubber material has good telescopic characteristics and can be firmly fixed on the nose of the operator. When in use, the surgeon does not need to fix it with his fingers, and can just ensure that the fixed middle rod 1 is located on the central axis of the operator's face.

[0059] Please refer to Figure 1 and Figure 3 The auxiliary fixing part 9 includes a rotating seat 91 and two groups of adhesive components 92. The rotating seat 91 is rotatably assembled on the fixed middle rod 1. The adjacent ends of the two groups of adhesive components 92 are rotatably connected to the opposite sides of the rotating seat 91 respectively. The adhesive components 92 are used to be bonded and fixed to the skin on both sides of the patient's nose bridge. The adhesive components 92 include a flexible rotating rod 921 and a hydrogel adhesive 922. One end of the flexible rotating rod 921 is hinged to the rotating seat 91. The hydrogel adhesive 922 is bonded and fixed to the flexible rotating rod 921. The flexible rotating rod 921 is a silicone member or a rubber member.

[0060] The auxiliary fixing part 9 designed as above can better adapt to the non-planar skin structure near the bridge of the nose of the patient. The hydrogel paste 922 has a good fixing effect, and combined with the double fixing effect of the nose holder 2, it can effectively prevent the device from shaking on the patient's face.

[0061] Please refer to Figure 1 and Figure 4 The diameter of the middle part of the designer handle 41 gradually decreases and forms a clamping portion 412. The two sides of the fixing buckle 5 are respectively provided with clamping grooves 52 adapted to the clamping portion 412, and the clamping portion 412 can be detachably clamped in the clamping grooves 52.

[0062] The designer handle 41 and the fixing buckle 5 designed as above facilitate the quick installation, fixing and removal of the designer handle 41, which is helpful for removing the double eyelid designer 4 for separate use. Moreover, the designer handle 41 in a fixed state is not easy to shake and has higher stability.

[0063] The beneficial technical effects of the double eyelid surgery auxiliary marking and simulation device of the embodiment of the present application are as follows:

[0064] The bendable arc-shaped steel wire 42 is designed with a variable structure of the elastic rope 7, which is very soft and easy to bend and deform, and can meet the needs of double eyelid surgery for patients with different eye shapes and different eye sizes;

[0065] The structure of the double eyelid designer 4 is basically the same as the structure of the currently commonly used handheld unilateral designer, which perfectly matches the usage habits of existing surgeons. The proficiency of using the device for double eyelid surgery does not require a lot of training, and the difficulty of using and becoming proficient in it is small, which is suitable for wide promotion and application;

[0066] The additional nose holder 2 and the auxiliary fixing part 9 can better adapt to the non-planar face structure of the patient. When in use, the surgeon does not need to fix the device with fingers, freeing the surgeon's hands to fix the device on the patient's face, making it convenient for the surgeon to simulate the postoperative shape of the patient's double eyelids for a long time, so that the patient has a longer time to judge whether the double eyelid shape is satisfactory.

[0067] By the relative position of the sliding buckle 6 and the scale line 8 on the fixed middle rod 1, an intuitive measurement and reference for the width of the surgical line can be provided, which is sufficient to replace the commonly used and large protractor, simplifies the overall structure, facilitates the surgeon's flexible operation, and can efficiently assist in drawing accurate double eyelid lines on the patient's eyelid skin.

[0068] Embodiment 2

[0069] The second embodiment of the present application discloses a double eyelid surgery auxiliary marking and simulation device. Figure 5 and Figure 6 , which is different from the first embodiment in that:

[0070] The sliding buckle 6 is made of elastic silicone material, and the sliding buckle 6 and the fixed middle rod 1 are relatively fixed through static sliding friction, thereby eliminating the bolt fixing structure, making the structure more standardized and more convenient to use.

[0071] A spiral buckle 411 is provided in the middle of the designer handle 41 , and spiral grooves 51 adapted to the spiral buckle 411 are respectively provided on both sides of the fixing buckle 5 , and the spiral buckle 411 is rotatably and detachably assembled in the spiral grooves 51 .

[0072] The designer handle 41 and fixing buckle 5 designed as above also facilitate quick installation, fixing and removal of the designer handle 41, which is helpful for removing the double eyelid designer 4 for separate use. Moreover, the designer handle 41 in a fixed state is not easy to shake and has high stability.

[0073] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. A double eyelid surgery auxiliary marking and simulation device, characterized in that: It includes a fixed middle rod (1), a nose tip fixer (2), a sliding middle rod (3) and two double eyelid designers (4); The nose holder (2) is arranged at one end of the fixed middle rod (1), the sliding middle rod (3) is slidably assembled at the other end of the fixed middle rod (1), the sliding middle rod (3) and the fixed middle rod (1) are arranged on the same central axis, the double eyelid designer (4) comprises a designer handle (41) and a bendable arc-shaped steel wire (42), the sliding middle rod (3) is provided with a fixing buckle (5), the designer handle (41) is arranged along the length direction of the sliding middle rod (3), and two groups of the designer handles (41) are detachably assembled on opposite sides of the fixing buckle (5); The fixed middle rod (1) is slidably equipped with a sliding buckle (6); an elastic rope (7) is arranged between the end of the bendable arc-shaped steel wire (42) away from the designer handle (41) and the side of the sliding buckle (6); scale lines (8) are arranged on the outer peripheral wall of the fixed middle rod (1); the sliding buckle (6) is freely slidable and fixed along the length direction of the fixed middle rod (1) within the range of the scale lines (8); an auxiliary fixing portion (9) is also arranged on the sliding middle rod (3); the auxiliary fixing portion (9) is adjacent to the connection between the designer handle (41) and the bendable arc-shaped steel wire (42).

2. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The nose holder (2) comprises a hinged portion (21) and a nose cover (22); the nose cover (22) is rotatably connected to the end of the fixed middle rod (1) via the hinged portion (21); the rotation axis of the hinged portion (21) is perpendicular to the length direction of the fixed middle rod (1); the nose cover (22) is made of elastic rubber material and is wrapped around and fixed to the nose portion of the patient.

3. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The sliding buckle (6) is threadedly mounted with a locking bolt (61), one end of which is used to press against the outer peripheral wall of the fixed middle rod (1), and the locking bolt (61) and the scale line (8) are respectively located on opposite sides of the fixed middle rod (1).

4. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The sliding buckle (6) is made of elastic silicone material, and the sliding buckle (6) and the fixed middle rod (1) are relatively fixed through static sliding friction.

5. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: A first fixing ring (421) is provided at the end of the bendable arc-shaped steel wire (42) away from the designer handle (41), a second fixing ring (62) is provided on the side of the sliding buckle (6), and two ends of the elastic rope (7) are respectively connected to the first fixing ring (421) and the second fixing ring (62).

6. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The sliding buckle (6) is also provided with two triangular indicating parts (63), the triangular indicating parts (63) are used to indicate the corresponding scale line (8), and the two triangular indicating parts (63) are respectively located on two opposite sides of the scale line (8).

7. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: A spiral buckle (411) is arranged in the middle of the designer handle (41), and spiral grooves (51) adapted to the spiral buckle (411) are arranged on both sides of the fixing buckle (5), and the spiral buckle (411) is rotatably and detachably assembled in the spiral grooves (51).

8. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The diameter of the middle part of the designer handle (41) gradually decreases to form a clamping portion (412), and clamping grooves (52) adapted to the clamping portion (412) are respectively provided on both sides of the fixing buckle (5), and the clamping portion (412) can be detachably clamped in the clamping grooves (52).

9. The double eyelid surgery auxiliary marking and simulation device according to claim 1, characterized in that: The auxiliary fixing part (9) comprises a rotating seat (91) and two groups of adhesive components (92); the rotating seat (91) is rotatably mounted on the fixed middle rod (1); the adjacent ends of the two groups of adhesive components (92) are rotatably connected to the opposite sides of the rotating seat (91); the adhesive components (92) are used to be adhesively fixed to the skin on both sides of the bridge of the patient's nose.

10. The double eyelid surgery auxiliary marking and simulation device according to claim 9, characterized in that: The pasting assembly (92) comprises a flexible rotating rod (921) and a hydrogel paste (922), one end of the flexible rotating rod (921) is hinged to the rotating seat (91), the hydrogel paste (922) is bonded and fixed to the flexible rotating rod (921), and the flexible rotating rod (921) is a silicone member or a rubber member.

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