Maxillofacial region ice compress device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a maxillofacial region ice compress device. The ice compress cover comprises a cover body, two fixing assemblies and an ice compress assembly, the ice compress assembly comprises a pair of first soft rails which are arranged in parallel, a pair of second soft rails which are arranged below the first soft rails and are parallel to the first soft rails, and a pair of upper jaw ice compress bags which are sequentially connected between the two first soft rails in a sliding manner from left to right; the pair of lower jaw ice compress bags and the chin ice compress bags are sequentially arranged between the first soft rails and the second soft rails in a sliding connection mode from left to right, and the chin ice compress bags are arranged between the two second soft rails in a sliding connection mode; a first sealing channel allowing the drainage tube to penetrate is formed in the middle of the maxillary ice compress bag in the thickness direction in a penetrating mode, and a first guide through groove used for being matched with the first sealing channel to allow the drainage tube to transversely move is formed in the position, located below the maxillary ice compress bag, of the cover body. According to the device, ice compress can be selectively conducted according to the operation area of a patient, and meanwhile compression on the drainage tube can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a maxillofacial ice compress device. Background Art

[0002] In the clinical work of oral and maxillofacial surgery, ice compress is often used for patients after surgery to relieve pain, reduce facial swelling and bleeding.

[0003] Currently, existing ice compress devices are roughly divided into two types. One is to press a treatment towel containing a water-filled ice pack on the patient's wound for ice compress. The other is to set a placement layer in the mask that can accommodate ice packs, ice cubes, etc. When in use, ice cubes are put into it, and then the mask is covered on the patient's face and adjusted to fit the patient's face to achieve the effect of ice compress on the patient's maxillofacial region. However, the following problems still exist in the existing devices:

[0004] 1. In maxillofacial surgery, a negative pressure drainage tube is often left at the patient's wound. When the existing devices are used, they are directly attached to the wound, and the ice cubes will compress the drainage tube, which may cause poor drainage, and the blood in the tube may coagulate due to long-term retention in the tube, resulting in poor drainage effect;

[0005] 2. When performing cold compress after surgery, if a treatment towel wrapped with a water-filled ice pack is used for cold compress, problems such as a small cold compress area, difficult fixation, and difficult plasticity of ice cubes will occur, and the entire wound may not be completely ice-compressed, affecting the ice compress effect; while the existing masks usually perform ice compress on the entire maxillofacial region of the patient, the covered area is too large, and the areas that do not need ice compress of the patient will be ice-compressed synchronously, reducing the comfort of the patient. At the same time, it increases the freezing time of the ice pack and ice cubes, increases the preparation time before ice compress, and reduces the efficiency. Content of the Utility Model

[0006] In order to solve the above problems, the purpose of the utility model is to provide a maxillofacial ice compress device that can selectively ice compress according to the surgical area of the patient and avoid compressing the drainage tube at the same time.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A maxillofacial ice compress device includes a cover body covering the maxillofacial region, fixing components symmetrically arranged on both sides of the cover body, and an ice compress component arranged on the outer surface of the cover body; the ice compress component includes a pair of first soft rails fixedly arranged in parallel on the outer surface of the cover body, a pair of second soft rails arranged below the first soft rails and parallel to the first soft rails, a pair of upper jaw ice compress bags slidably connected in sequence from left to right between the two first soft rails, a pair of lower jaw ice compress bags slidably connected in sequence from left to right between the first soft rails and the second soft rails, and a mental region ice compress bag slidably connected between the two second soft rails; a first sealing channel for allowing a drainage tube to pass through is formed through the middle of the upper jaw ice compress bag in the thickness direction, and a first guiding through groove for cooperating with the first sealing channel to allow the drainage tube to move horizontally is formed on the cover body at a position below the upper jaw ice compress bag; a second sealing channel for allowing a drainage tube to pass through is formed through the middle of the lower jaw ice compress bag in the thickness direction, and a second guiding through groove for cooperating with the second sealing channel to allow the drainage tube to move horizontally is formed on the cover body at a position below the lower jaw ice compress bag; a third sealing channel for allowing a drainage tube to pass through is formed through the middle of the mental region ice compress bag in the thickness direction, and a third guiding through groove for cooperating with the third sealing channel to allow the drainage tube to move horizontally is formed on the cover body at a position below the mental region ice compress bag.

[0009] Preferably, each of the first soft rails is composed of a left rail section and a right rail section that are not connected in the middle; the two upper jaw ice compress bags are respectively and sequentially arranged on the left rail section and the right rail section; the two lower jaw ice compress bags are respectively and sequentially arranged on the left rail section and the right rail section.

[0010] Preferably, the fixing component includes a fixing band fixedly arranged at the lower part of the inner side of the cover body, a fixing ring fixedly arranged at the end of the fixing band, an adjusting band fixedly arranged at the upper part of the inner side of the cover body and having an end passing through the fixing ring and buckling back, and an adjustable buckle fixedly arranged at the buckling end of the adjusting band and slidably arranged at the fixed end of the adjusting band.

[0011] Preferably, a reinforcing cover adapted to the cover body is further fixedly connected to the top of the cover body, a first chain belt is arranged at the bottom of the reinforcing cover, a second chain belt adapted to the first chain belt is arranged at the corresponding position of the bottom of the cover body, and the first chain belt and the second chain belt are detachably connected through a pull head.

[0012] Preferably, a first sliding rail 42 adapted to the first sealing channel 331, a second sliding rail 43 adapted to the second sealing channel 341, and a third sliding rail 44 adapted to the third sealing channel 351 are embedded through the reinforcing cover 4.

[0013] Preferably, the outer surface of the upper jaw ice pack 33 is provided with a first rough surface 332, the outer surface of the lower jaw ice pack 34 is provided with a second rough surface 342, and the outer surface of the chin ice pack 35 is provided with a third rough surface 352. At corresponding positions on the inner surface of the reinforcement cover 4, there are provided a first hook surface 45 adapted to the first rough surface 332, a second hook surface 46 adapted to the second rough surface 342, and a third hook surface 47 adapted to the third rough surface 352.

[0014] Preferably, a first notch extending to one edge of the upper jaw ice pack is formed on one side of the first sealing channel. On the inner walls of both sides of the first notch, first fixing plates are symmetrically fixed. A first elastic ring is fixed on the inner wall of the first sealing channel, and both ends of the first elastic ring are respectively fixedly connected to the corresponding first fixing plates; a second notch extending to one edge of the lower jaw ice pack is formed on one side of the second sealing channel. On the inner walls of both sides of the second notch, second fixing plates are symmetrically fixed. A second elastic ring is fixed on the inner wall of the second sealing channel, and both ends of the second elastic ring are respectively fixedly connected to the corresponding second fixing plates; a third notch extending to one edge of the chin ice pack is formed on one side of the third sealing channel. On the inner walls of both sides of the third notch, third fixing plates are symmetrically fixed. A third elastic ring is fixed on the inner wall of the third sealing channel, and both ends of the third elastic ring are respectively fixedly connected to the corresponding third fixing plates.

[0015] The utility model has the following beneficial effects:

[0016] 1. By using two upper jaw ice packs, two lower jaw ice packs and a chin ice pack, the maxillofacial part of the patient is divided into five areas. The corresponding ice packs can be installed on the surface of the cover according to the surgical area of the patient, so as to avoid icing the areas that do not need to be iced for the patient, improve the comfort of the patient, reduce the freezing time of the ice pack and the preparation time before icing, improve the efficiency. At the same time, through the cooperation of the two upper jaw ice packs 33 with the two first soft rails, the two lower jaw ice packs with the first soft rail and the second soft rail, and the chin ice pack with the two second soft rails, the ice packs can be fixed outside the cover, and at the same time, the ice packs can be made to fit the patient's maxillofacial part as much as possible to improve the icing effect on the patient;

[0017] 2. Through the cooperation of the first sealing channel and the first guiding through groove, the cooperation of the second sealing channel and the second guiding through groove, and the cooperation of the third sealing channel and the third guiding through groove, on the one hand, it can avoid the compression of the drainage tube by the ice pack and the cover, thereby avoiding situations such as poor drainage and blood coagulation in the tube due to long-term retention of blood in the tube, improving the drainage effect and facilitating the medical staff to judge the patient's condition. On the other hand, the position of the ice pack can be adjusted according to the position of the drainage tube, improving the cooperation between the drainage tube and the ice pack and avoiding the situation that the drainage tube cannot pass through the ice pack. Description of the Drawings

[0018] Figure 1 Front view of the ice compress device (the reinforcement cover is not shown);

[0019] Figure 2 Front view of the ice compress device (before assembling the reinforcement cover);

[0020] Figure 3 Front view of the ice compress device (after assembling the reinforcement cover);

[0021] Figure 4 Schematic diagram of the fixing component;

[0022] Figure 5 Schematic diagram of the use of the ice compress device.

[0023] Explanation of reference numerals:

[0024] 1. Cover body; 11. First guiding through groove; 12. Second guiding through groove; 13. Third guiding through groove; 14. Second chain belt; 2. Fixing component; 21. Fixing belt; 22. Fixing ring; 23. Adjusting belt; 24. Adjustable buckle; 3. Ice compress component; 31. First soft rail; 311. Left rail section; 312. Right rail section; 32. Second soft rail; 33. Maxillary ice compress bag; 331. First sealing channel; 332. First furry surface; 333. First notch; 334. First fixing plate; 335. First elastic ring; 34. Mandibular ice compress bag; 341. Second sealing channel; 342. Second furry surface; 343. Second notch; 344. Second fixing plate; 345. Second elastic ring; 35. Mental ice compress bag; 351. Third sealing channel; 352. Third furry surface; 353. Third notch; 354. Third fixing plate; 355. Third elastic ring; 4. Reinforcement cover; 41. First chain belt; 42. First slide rail; 43. Second slide rail; 44. Third slide rail; 45. First hook surface; 46. Second hook surface; 47. Third hook surface; 5. Pull head. Detailed implementation manners

[0025] The following further describes the present utility model in detail with reference to the drawings and specific embodiments:

[0026] A maxillofacial ice compress device, comprising a cover body 1 covering the maxillofacial region, fixing components 2 symmetrically arranged on both sides of the cover body 1, and an ice compress component 3 arranged on the outer surface of the cover body 1; the ice compress component 3 includes a pair of first soft rails 31 fixedly arranged on the outer surface of the cover body 1 and parallel to each other, a pair of second soft rails 32 arranged below the first soft rails 31 and parallel to the first soft rails 31, a pair of upper jaw ice compress bags 33 slidably connected in sequence from left to right between the two first soft rails 31, a pair of lower jaw ice compress bags 34 slidably connected in sequence from left to right between the first soft rails 31 and the second soft rails 32, and a mental ice compress bag 35 slidably connected between the two second soft rails 32; a first sealing channel 331 for allowing a drainage tube to pass through is formed in the middle of the upper jaw ice compress bag 33 in the thickness direction, and a first guiding through groove 11 for cooperating with the first sealing channel 331 to allow the drainage tube to move horizontally is formed in the cover body 1 at a position below the upper jaw ice compress bag 33; a second sealing channel 341 for allowing a drainage tube to pass through is formed in the middle of the lower jaw ice compress bag 34 in the thickness direction, and a second guiding through groove 12 for cooperating with the second sealing channel 341 to allow the drainage tube to move horizontally is formed in the cover body 1 at a position below the lower jaw ice compress bag 34; a third sealing channel 351 for allowing a drainage tube to pass through is formed in the middle of the mental ice compress bag 35 in the thickness direction, and a third guiding through groove 13 for cooperating with the third sealing channel 351 to allow the drainage tube to move horizontally is formed in the cover body 1 at a position below the mental ice compress bag 35.

[0027] The maxillofacial region of the patient is divided into five regions by the two upper jaw ice compress bags 33, the two lower jaw ice compress bags 34 and the mental ice compress bag 35. The corresponding ice compress bag can be installed on the surface of the cover body 1 according to the surgical area of the patient, so as to avoid ice compressing the areas of the patient that do not need ice compress, improve the comfort of the patient, reduce the freezing time of the ice compress bag and the preparation time before ice compress, improve the efficiency. At the same time, through the cooperation of the two upper jaw ice compress bags 33 and the two first soft rails 31, the two lower jaw ice compress bags 34 and the first soft rails 31 and the second soft rails 32, and the cooperation of the mental ice compress bag 35 and the two second soft rails 32, the ice compress bag can be fixed outside the cover body 1, and at the same time, the ice compress bag can be made to fit the maxillofacial region of the patient as much as possible to improve the ice compress effect of the patient; through the cooperation of the first sealing channel 331 and the first guiding through groove 11, the cooperation of the second sealing channel 341 and the second guiding through groove 12, and the cooperation of the third sealing channel 351 and the third guiding through groove 13, on the one hand, it can avoid the compression of the drainage tube by the ice compress bag and the cover body 1, and further avoid the occurrence of situations such as poor drainage and coagulation of the blood in the tube due to long-term retention in the tube, improve the drainage effect, and facilitate the medical staff to judge the condition of the patient. On the other hand, the position of the ice compress bag can be adjusted according to the position of the drainage tube, improve the cooperation between the drainage tube and the ice compress bag, and avoid the situation that the drainage tube cannot pass through the ice compress bag.

[0028] As a possible implementation manner of this solution, preferably, each of the first soft rails 31 is composed of a left rail section 311 and a right rail section 312 that are not connected in the middle; the two upper jaw ice packs 33 are respectively and sequentially arranged on the left rail section 311 and the right rail section 312; the two lower jaw ice packs 34 are respectively and sequentially arranged on the left rail section 311 and the right rail section 312; since the left rail section 311 and the right rail section 312 of the first soft rail 31 are not connected, the upper jaw ice packs 33 and the lower jaw ice packs 34 are respectively located on both sides of the patient's jaw and face, so as to realize cold compress on one side of the patient's jaw and face, thus avoiding the situation of simultaneous cold compress on the other side when the patient has unilateral surgery on the jaw and face.

[0029] As a possible implementation manner of this solution, preferably, the fixing component 2 includes a fixing belt 21 fixed to the lower part inside the cover body 1, a fixing ring 22 fixed to the end of the fixing belt 21, an adjusting belt 23 fixed to the upper part inside the cover body 1 and the end of which passes through the fixing ring 22 and buckles back, and an adjustable buckle 24 fixed to the buckling end of the adjusting belt 23 and sliding with the fixed end of the adjusting belt 23; through the setting of the adjustable buckle 24, the length of the fixing component 2 can be adjusted, so that the cover body 1 fits closely with the patient's face, thereby improving the effect of cold compress.

[0030] As a possible implementation manner of this solution, preferably, a reinforcing cover 4 adapted to the cover body 1 is further fixedly connected to the top of the cover body 1. A first chain belt 41 is provided at the bottom of the reinforcing cover 4, and a second chain belt 14 adapted to the first chain belt 41 is provided at the corresponding position at the bottom of the cover body 1. The first chain belt 41 and the second chain belt 14 are detachably connected through a pull head 5; by covering the reinforcing cover 4 outside the cover body 1, the cold compress bag is wrapped between the reinforcing cover 4 and the cover body 1. On the one hand, it can prevent the ice pack from suddenly falling from the cover body 1, and on the other hand, it can improve the aesthetic degree when wearing the ice compress device.

[0031] As a possible implementation manner of this solution, preferably, a first slide rail 42 adapted to the first sealing channel 331, a second slide rail 43 adapted to the second sealing channel 341, and a third slide rail 44 adapted to the third sealing channel 351 are embedded through the reinforcing cover 4; through the cooperation of the first slide rail 42, the second slide rail 43 and the third slide rail 44, the drainage tube can extend to the outside of the ice compress device, avoiding the compression of the drainage tube by the reinforcing cover 4 and further avoiding the situation of unsmooth drainage of the drainage tube.

[0032] As a possible implementation of this solution, preferably, a first rough surface 332 is provided on the outer surface of the upper jaw ice pack 33, a second rough surface 342 is provided on the outer surface of the lower jaw ice pack 34, and a third rough surface 352 is provided on the outer surface of the mental region ice pack 35. At corresponding positions on the inner surface of the reinforcement cover 4, a first hook surface 45 adapted to the first rough surface 332, a second hook surface 46 adapted to the second rough surface 342, and a third hook surface 47 adapted to the third rough surface 352 are provided. Through the cooperation of the first rough surface 332 and the first hook surface 45, the second rough surface 342 and the second hook surface 46, and the third rough surface 352 and the third hook surface 47, the reinforcement of the reinforcement cover 4 and the cover body 1 can be further enhanced, and at the same time, the ice pack can be further limited to prevent the ice pack from moving.

[0033] As a possible implementation of this solution, preferably, a first notch 333 extending to one side edge of the upper jaw ice pack 33 is provided on one side of the first sealing channel 331. On the inner walls of both sides of the first notch 333, first fixing plates 334 are symmetrically fixed. A first elastic ring 335 is fixed on the inner wall of the first sealing channel 331, and both ends of the first elastic ring 335 are respectively fixedly connected to the corresponding first fixing plates 334. A second notch 343 extending to one side edge of the lower jaw ice pack 34 is provided on one side of the second sealing channel 341. On the inner walls of both sides of the second notch 343, second fixing plates 344 are symmetrically fixed. A second elastic ring 345 is fixed on the inner wall of the second sealing channel 341, and both ends of the second elastic ring 345 are respectively fixedly connected to the corresponding second fixing plates 344. A third notch 353 extending to one side edge of the mental region ice pack 35 is provided on one side of the third sealing channel 351. On the inner walls of both sides of the third notch 353, third fixing plates 354 are symmetrically fixed. A third elastic ring 355 is fixed on the inner wall of the third sealing channel 351, and both ends of the third elastic ring 355 are respectively fixedly connected to the corresponding third fixing plates 354. Through the cooperation of the notch, the sealing channel, the fixing plate, and the elastic ring, the drainage bottle for collecting the drainage fluid at the end of the drainage tube can pass through. At the same time, when the drainage bottle does not need to pass through, the two fixing plates can drive the two sides of the notch to fit together under the action of the elastic ring, thereby increasing the ice application area of the ice pack to the patient's wound and improving the ice application effect. At the same time, the elastic ring can clamp the drainage tube to prevent the drainage tube from slipping out of or moving in the cover body 1. Through the cooperation of the notch, the sealing channel, the fixing plate, and the elastic ring, when wearing the ice application device, it is not necessary to disassemble the drainage bottle from the end of the drainage tube, and aseptic operation can be achieved, reducing the possibility of infection.

[0034] The working principle of this device is as follows:

[0035] During use, first install the corresponding ice pack on the cover body 1 according to the area of the patient's surgery. Then separate the two fixing plates on the side away from each other. After passing the drainage bottle and the mobile end of the drainage tube through the corresponding chute, notch, sealing channel and slide rail, release the two fixing plates so that the elastic ring drives the two fixing plates to fit together while clamping the drainage tube, preventing the drainage tube from slipping out of the device and moving inside the device when the patient moves. Then adjust the adjustable buckle 24 according to the size of the patient's face so that the cover body 1 closely adheres to the patient's face. Then fold the reinforcement cover 4 from the outside of the cover body 1 to the bottom and fix it with the pull head 5. Finally, gently press the ice pack against the patient's jaw and face to make the matching hook surface and plush surface fit more firmly. During disassembly, only need to remove the two fixing components 2 from the patient's ears on both sides, and then move the cover body 1, the ice pack component 3 and the reinforcement cover 4 synchronously outward until the end of the drainage tube is removed. If only the left jaw of the patient needs to be iced, as Figure 5 shown, only need to install the left mandibular ice pack 34.

[0036] The above is only the specific implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A maxillofacial ice compress device, characterized in that: It comprises a cover body (1) arranged on the maxillofacial area, a fixing assembly (2) symmetrically arranged on both sides of the cover body (1), and an ice compress assembly (3) arranged on the outer surface of the cover body (1); The ice compress assembly (3) comprises a pair of first soft rails (31) fixed to the outer surface of the cover body (1) and arranged parallel to each other, a pair of second soft rails (32) arranged below the first soft rails (31) and parallel to the first soft rails (31), a pair of upper jaw ice compress bags (33) slidably connected from left to right and arranged between the two first soft rails (31), a pair of lower jaw ice compress bags (34) slidably connected from left to right and arranged between the first soft rail (31) and the second soft rail (32), and a chin ice compress bag (35) slidably connected and arranged between the two second soft rails (32); A first sealing channel (331) is provided in the middle of the maxillary ice pack (33) along the thickness direction to allow the drainage tube to pass through, and a first guiding groove (11) is provided on the cover body (1) below the maxillary ice pack (33) to cooperate with the first sealing channel (331) to allow the drainage tube to move laterally; A second sealing channel (341) is provided in the middle of the mandibular ice pack (34) along the thickness direction to allow the drainage tube to pass through, and a second guiding groove (12) is provided on the cover body (1) below the mandibular ice pack (34) to cooperate with the second sealing channel (341) to allow the drainage tube to move laterally; A third sealing channel (351) is provided in the middle of the chin ice pack (35) along the thickness direction to allow the drainage tube to pass through, and a third guide groove (13) is provided on the cover body (1) below the chin ice pack (35) to cooperate with the third sealing channel (351) to allow the drainage tube to move horizontally.

2. The maxillofacial ice compress device according to claim 1, characterized in that: Each of the first soft rails (31) is composed of a left rail section (311) and a right rail section (312) which are not connected in the middle; The two upper jaw ice packs (33) are respectively and sequentially arranged on the left rail section (311) and the right rail section (312); the two lower jaw ice packs (34) are respectively and sequentially arranged on the left rail section (311) and the right rail section (312).

3. The maxillofacial ice compress device according to claim 1, characterized in that: The fixing assembly (2) comprises a fixing belt (21) fixed to the lower inner part of the cover body (1), a fixing ring (22) fixed to the end of the fixing belt (21), an adjusting belt (23) fixed to the upper inner part of the cover body (1) and having its end passing through the fixing ring (22) and buckled, and an adjustable buckle (24) fixed to the buckled end of the adjusting belt (23) and sliding with the fixed end of the adjusting belt (23).

4. The maxillofacial ice compress device according to claim 1, characterized in that: The top of the cover body (1) is also fixedly connected to a reinforcement cover (4) adapted to the cover body (1); a first chain belt (41) is provided at the bottom of the reinforcement cover (4); a second chain belt (14) adapted to the first chain belt (41) is provided at a corresponding position of the bottom of the cover body (1); the first chain belt (41) and the second chain belt (14) are detachably connected via a pull head (5).

5. The maxillofacial ice compress device according to claim 4, characterized in that: The reinforcement cover (4) is embedded with a first slide rail (42) adapted to the first sealing channel (331), a second slide rail (43) adapted to the second sealing channel (341), and a third slide rail (44) adapted to the third sealing channel (351).

6. The maxillofacial ice compress device according to claim 4, characterized in that: The outer surface of the maxillary ice compress bag (33) is provided with a first furry surface (332), the outer surface of the mandibular ice compress bag (34) is provided with a second furry surface (342), the outer surface of the chin ice compress bag (35) is provided with a third furry surface (352), and the corresponding positions of the inner surface of the reinforcement cover (4) are provided with a first hook surface (45) adapted to the first furry surface (332), a second hook surface (46) adapted to the second furry surface (342), and a third hook surface (47) adapted to the third furry surface (352).

7. The maxillofacial ice compress device according to claim 1, characterized in that: A first notch (333) extending to the edge of one side of the maxillary ice pack (33) is provided on one side of the first sealing channel (331), first fixing plates (334) are symmetrically fixed to the inner walls on both sides of the first notch (333), a first elastic ring (335) is fixed to the inner wall of the first sealing channel (331), and both ends of the first elastic ring (335) are respectively fixedly connected to the corresponding first fixing plates (334); a second notch (343) extending to the edge of one side of the mandibular ice pack (34) is provided on one side of the second sealing channel (341), second fixing plates are symmetrically fixed to the inner walls on both sides of the second notch (343) (344), a second elastic ring (345) is fixed to the inner wall of the second sealed channel (341), and the two ends of the second elastic ring (345) are respectively fixedly connected to the corresponding second fixing plate (344); a third notch (353) extending to the edge of one side of the chin ice pack (35) is opened on one side of the third sealed channel (351), and third fixing plates (354) are symmetrically fixed to the inner walls on both sides of the third notch (353), and a third elastic ring (355) is fixed to the inner wall of the third sealed channel (351), and the two ends of the third elastic ring (355) are respectively fixedly connected to the corresponding third fixing plate (354).

Images