Examination clothes suitable for being used in cooperation with mammary gland molybdenum target examination

Abstract

The invention discloses examination clothes suitable for being used in cooperation with mammary gland molybdenum target examination, and belongs to the technical field of medical instruments. The neckerchief is integrally connected with the vest; the first magic tapes are used for connecting the shoulder parts of the sheet body with the shoulder parts of the vest; the waistband is arranged at the waist of the vest and used for adjusting the fitting degree of the vest and the sheet body at the waist and abdomen position of the patient through pulling, the left side and the right side of the sheet body are connected with the corresponding positions of the vest through first zippers respectively, a first buckle is arranged on a sliding block of each first zipper, and the first buckles are connected with the waistband; the opening and closing position of the first zipper is adjusted through sliding of the waistband. The mammary gland exposure device is convenient to operate, the exposure position can be adjusted, unilateral mammary gland exposure can be achieved, the radiation influence range is reduced, and the experience feeling of examinees is optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to an examination suit suitable for use in conjunction with breast mammography examination. Background Art

[0002] Radiology has been widely used in various examinations and treatments, with DR, CT, and PET-CT becoming crucial tools for disease diagnosis and treatment. However, radiation penetrating the human body produces certain biological effects, exceeding thresholds and causing damage to certain tissues and organs. To address this, protective clothing has been developed based on the characteristics of radiation. Radiology is also widely used in mammography and breast biopsy. The mammary gland is located between the superficial and deep layers of the subcutaneous superficial fascia. This superficial fascia extends into the breast tissue, forming cord-like interlobular septa, which connect to the pectoral fascia at one end and the skin at the other, anchoring the mammary glands within the subcutaneous tissue of the chest. During unilateral mammography, X-ray protection is required for the contralateral breast. However, current full-piece X-ray protective clothing is not suitable for shielding a single breast and is not effective in protecting the contralateral breast during unilateral mammography.

[0003] Currently, commonly used mammography examination gowns in clinical practice suffer from the following major technical drawbacks: First, the exposure range is difficult to precisely control, often resulting in overexposure that infringes on patient privacy or radiation damage to non-examination areas. Second, they lack flexibility. Existing gowns often rely on elastic bands or Velcro to adjust the fit, providing only overall tightness control. They lack the ability to independently fold and adjust the height of one side of the gown for unilateral breast examinations, resulting in low examination efficiency and a poor patient experience.

[0004] The invention patent with publication number CN103892487A discloses a breast examination protective suit, which includes a body, a collar and sleeves. There is an opening on each side of the chest of the body, and each opening is covered with a closable cover sheet on the outside. The body, collar, sleeves and cover sheet are all made of X-ray shielding materials. The protective suit can expose the inspection area according to the needs of shooting, reduce the additional radiation dose received by the examinee, and protect the privacy of the examinee. The manufacturing process is simple and easy to put on and take off. In actual use, the body shape of the examinee varies greatly. For patients of different body shapes, the height and size of their breasts are different. The protective suit can only be exposed at designated positions, and there may be incomplete exposure or excessive exposure, which may affect the inspection shooting and the patient's body temperature. In view of the above problems, the existing technology is in urgent need of improvement. Summary of the Invention

[0005] The purpose of the present invention is to provide an examination suit suitable for use in conjunction with breast mammography examination, which reduces exposure of non-examination areas of the patient, improves the warmth retention effect and enhances the patient's privacy protection capability.

[0006] The technical solutions adopted by the present invention to achieve the above-mentioned purpose are: Disclosed is an examination suit suitable for use in conjunction with mammography examination, comprising: a vest having a foldable sheet at the upper front portion; a neckband integrally connected to the vest; a first Velcro strip for connecting the shoulder portion of the sheet with the shoulder portion of the vest; and a waist belt provided at the waist of the vest for adjusting the fit between the vest and the sheet at the patient's waist and abdomen by pulling and retracting.

[0007] Preferably, the left and right sides of the sheet are respectively connected to the corresponding positions of the vest through a first zipper, and a first buckle is provided on the slider of each first zipper. The first buckle is connected to the belt and is used to adjust the opening and closing position of the first zipper by sliding the belt.

[0008] Preferably, the belt is provided with a second buckle in the middle of the front side, the belt is passed around the front side of the vest and the sheet, and both ends of the belt extend from the second buckle. By pulling the ends of the belt, the belt can be tightened so that the vest and the sheet fit tightly at the waist and abdomen.

[0009] Preferably, a vertical guide rail is provided in the middle of the sheet, and the second buckle is connected by sliding up and down along the guide rail. When the second buckle slides along the guide rail, it can drive the waist belt and the first buckles on both sides to slide synchronously along the first zipper, thereby realizing the height adjustment of the folding position of the sheet.

[0010] Preferably, the sheet is divided into a left sheet and a right sheet that can be folded independently, a second Velcro is provided on the front side of the neckband, and the necks of the left sheet and the right sheet are respectively connected to the second Velcro.

[0011] Preferably, the lower parts of the left and right panels are connected by a second zipper, the height position and length of the second zipper are consistent with those of the first zipper, and the slider of the second zipper is connected to the second buckle.

[0012] Preferably, by sliding the second buckle along the second zipper, the opening and closing positions of the second zipper and the first zipper can be adjusted synchronously, and the opening and closing positions are the same, thereby achieving adjustment of the bending height of the lower parts of the left and right sheets.

[0013] Preferably, the necks of the left and right panels are detachably connected to the second Velcro, and the left and right panels remain unconnected from the necks to the second zipper.

[0014] Preferably, the first zipper, the second zipper, the first buckle and the second buckle are all made of X-ray transmissive medical material.

[0015] Preferably, the waist belt is a braided belt, and the hardness of the waist belt is configured so that the second buckle and the first buckle can slide synchronously while maintaining the same height.

[0016] Compared with the existing technology, the present invention has the following beneficial effects: selective exposure and coverage are achieved through the foldable sheet and Velcro design, reducing body surface exposure and radiation risks; the waist belt is linked to the first buckle to adjust the zipper opening and closing, dynamically adapting to different body shapes and equipment pressure plates to avoid breast obstruction or excessive exposure; the second buckle guide rail is linked to achieve stepless adjustment and one-handed operation to improve efficiency; the split sheet is combined with the second Velcro to support unilateral independent exposure to reduce exposure of non-examination areas; the second zipper is adjusted synchronously to achieve symmetrical opening and closing to avoid compression or thermal insulation failure; medical material components have no X-ray artifacts to ensure image integrity; the woven belt has rigid support to ensure that the buckles on both sides slide synchronously at the same height to stably fit the waist and abdomen. The above designs synergistically improve imaging clarity, equipment adaptability and patient comfort, shorten examination time, and reduce anxiety and cold discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the front view of an examination suit suitable for use with a mammography examination; Figure 2 A schematic diagram of the back of an examination suit suitable for use with a mammography examination; Figure 3 This is a schematic diagram of the sheet opening state; Figure 4 This is a schematic diagram of the right sheet being opened separately; Figure 5 This is a schematic diagram of the belt tightening state; Figure 6 This is a diagram showing the body being opened and the waist belt being tightened.

[0018] Reference numerals: vest 1; scarf 2; panel 3; left panel 31; right panel 32; waist belt 4; first zipper 5; first buckle 6; second buckle 7; second zipper 8. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below with reference to the specific embodiments and the accompanying drawings: Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 3 , an examination suit suitable for use in conjunction with breast mammography examination, comprising: a vest 1 with a foldable sheet 3 on the upper front part; a neckband 2 integrally connected to the vest 1; a first Velcro for connecting the shoulder of the sheet 3 with the shoulder of the vest 1; a belt 4 provided at the waist of the vest 1, for adjusting the fit between the vest 1 and the sheet 3 at the patient's waist and abdomen by pulling.

[0021] The foldable sheet 3 refers to a flexible fabric component that covers the upper chest and can be flipped outward. The first Velcro refers to a connector with a hook surface and a loop surface that have bonding functions. The vest 1 has a shoulder strap that can be buckled on the patient's shoulder. The shoulder strap is integrally connected to the vest 1 and passes over the patient's shoulder from the back to stabilize the fit between the upper part of the vest 1 and the patient's back after the sheet 3 is folded.

[0022] When an examination is required, the operator separates the first Velcro strap on the shoulder and folds the sheet 3 under the breast, exposing the examination area while keeping the abdomen and back covered. By pulling the waist belt 4, the vest 1 and sheet 3 are tightly fitted at the waist and abdomen, reducing the exposed area of ​​the wearer's body, preventing cold air from directly irritating the wearer's exposed skin, and preventing cold air from invading through the hem and causing discomfort to the wearer. At the same time, the waist belt 4 also tightly wraps the vest 1 and sheet 3 around the wearer's waist, preventing the vest 1 and sheet 3 from forming a large gap between the wearer's body due to deformation or wrinkles, thereby reducing the radiation during the mammography examination that may affect the wearer's lower organs through the gap.

[0023] After the inspection is completed, the sheet 3 is reset and restored to its covering state on the wearer's chest by adhesion of the first Velcro.

[0024] Through the above-mentioned technical solution, this application achieves selective exposure and coverage of the patient's torso during the examination, effectively reducing the exposed body surface area while ensuring image acquisition quality. The adjustable tightening mechanism allows the garment to adapt to the anatomical characteristics of patients of different body sizes, eliminating air leakage caused by ill-fitting garments. The Velcro connection method not only ensures secure fixation but also allows medical staff to quickly operate the garment, shortening examination preparation time.

[0025] The left and right sides of the sheet 3 are respectively connected to the corresponding positions of the vest 1 through a first zipper 5. A first buckle 6 is provided on the slider of each first zipper 5. The first buckle 6 is connected to the belt 4 and is used to adjust the opening and closing position of the first zipper 5 by sliding the belt 4.

[0026] When the belt 4 slides longitudinally along the waist and abdomen of the vest 1, the first buckle 6 fixed on the belt 4 will drive the slider of the first zipper 5 to move synchronously, so that the connection between the sheet 3 and the vest 1, that is, the height position of the folded sheet 3 can be dynamically adjusted according to the different body shapes of the patients. For example, for subjects with large breasts or breasts that are low due to sagging, the opening position of the first zipper 5 can be adjusted downward by a distance by sliding the first buckle 6 downward to fully expose the mammary gland. For subjects with smaller breasts, the opening position of the first zipper 5 can be adjusted upward by sliding the first buckle 6 upward to make the folded sheet 3 at a suitable position below the breast, avoiding the folding position being too low, resulting in excessive skin exposure and causing discomfort to the subject. The above scheme can adapt to patients with different breast positions by steplessly adjusting the folding height of the sheet 3, avoiding the lower edge of the breast being blocked by the sheet 3, resulting in insufficient breast exposure, and ultimately causing blurred breast mammography images; at the same time, it also prevents the sheet 3 from being folded too high, resulting in excessive breast exposure, resulting in exposure of non-examination areas such as the area below the breast, and increasing the risk of radiation damage.

[0027] On the other hand, mammography examinations require the examinee to maintain a specific posture, and the pressure plate of the mammography examination equipment applies pressure to the breast to flatten the breast tissue. The size and position of the pressure plates of different brands of mammography equipment vary. Traditional protective clothing with a fixed-position folding release sheet 3 is only suitable for specific equipment. In the present invention, the first buckles 6 on both sides of the sheet 3 can slide synchronously through the belt 4 to achieve the height adjustment of the folding position of the sheet 3, avoiding the possibility that the sheet 3 is folded too high, resulting in the pressure plate not fully covering the breast, and improving the adaptability of the examination suit to different specifications and types of pressure plates.

[0028] Overall, the above structure avoids obstruction and reduces unnecessary exposure, significantly improving imaging clarity. Compared with the snap-on structure, it can achieve stepless adjustment and is simple to operate, which improves the efficiency of breast mammography and reduces patients' anxiety due to body exposure.

[0029] Since the sheet 3 is connected to the scarf 2 at the shoulder by the first Velcro, the sheet 3 remains on the front side of the patient's body to form a shield during the process of the first buckle 6 sliding to open and close the zippers on both sides. After adjusting to the appropriate position, the sheet 3 is naturally drooped by tearing the first Velcro, exposing the subject's breast, and then a breast mammography examination is performed. The subject's exposure time is shortened during the whole process, reducing the problem of the subject feeling cold and anxious due to long-term exposure.

[0030] The belt 4 is provided with a second buckle 7 in the middle of the front side. The belt 4 is passed around the front side of the vest 1 and the sheet 3. Both ends of the belt 4 extend from the second buckle 7. By pulling the ends of the belt 4, the belt 4 can be tightened so that the vest 1 and the sheet 3 fit tightly at the waist and abdomen.

[0031] When the examinee wears the examination suit, the two ends of the belt 4 pass through the second buckle 7 to form free ends. By pulling the ends in different directions, the loop path formed by the belt 4 on the front side of the vest 1 and the sheet 3 is shortened, so that the fabric layer in the waist and abdomen area is tightened. At this time, the gap between the vest 1 and the sheet 3 is reduced due to the contraction of the belt 4, and the fit between the two at the patient's waist and abdomen is enhanced. Since the second buckle 7 is located in the middle of the front side, the adjustment can be completed directly on the front of the patient during operation without the help of others. It solves the problem of insufficient fit of the examination suit at the waist and abdomen due to fixed size, so that the vest 1 and the sheet 3 can dynamically adjust the tightness according to the patient's body shape, which not only ensures the necessary exposure of the chest during the examination, but also maintains the shielding effect of the waist and abdomen, while reducing the penetration of cold air caused by loose clothing and improving the warmth performance.

[0032] A vertical guide rail is provided in the middle of the sheet 3, and the second buckle 7 is connected by sliding up and down along the guide rail. When the second buckle 7 slides along the guide rail, it can drive the belt 4 and the first buckles 6 on both sides to slide synchronously along the first zipper 5, thereby realizing the height adjustment of the folding position of the sheet 3.

[0033] The guide rail refers to a vertically extending guide structure disposed in the middle of the sheet 3, including but not limited to a slideway or track, that defines the movement path of the second buckle 7. Synchronous sliding refers to the longitudinal displacement of the second buckle 7, which in turn drives the waistband 4 and the first buckles 6 on either side to move synchronously along the first zipper 5. To adjust the height of the folded position of the sheet 3, the operator moves the second buckle 7 up and down along the guide rail. This causes the second buckle 7 to move longitudinally along the entire waistband 4. Since the ends of the waistband 4 are fixedly connected to the first buckles 6 on either side, the movement of the waistband 4 forces the first buckles 6 to slide synchronously along the track of the first zipper 5, thereby changing the connection position between the sheet 3 and the vest 1 at the first zipper 5. This linkage mechanism allows the folding height of the sheet 3 to be continuously adjusted as the second buckle 7 moves. The examinee does not need to pull the first buckles 6 on both sides simultaneously or separately. They only need to adjust the height of the second buckle 7 on the front. That is, the opening and closing positions of both sides of the sheet 3 at the first zipper 5 can be adjusted synchronously with a single-handed operation, improving adjustment efficiency. The second buckle 7 and the belt 4 provide the examinee with intuitive operation. The position of the second buckle 7 and the belt 4 can be visually determined to determine the bending position of the sheet 3 without having to lean sideways or lower the head, providing convenience for patients with limited mobility. At the same time, it avoids the possibility of the first buckles 6 on both sides sliding and getting stuck on the first zipper 5 due to inconsistent sliding heights, which helps to speed up adjustment efficiency, further reduce the examinee's anxiety about body exposure, and enhance the examinee's experience.

[0034] See also Figure 4-Figure 6 The sheet 3 is divided into a left sheet 31 and a right sheet 32 ​​which can be folded independently. A second Velcro is provided on the front side of the scarf 2, and the necks of the left sheet 31 and the right sheet 32 ​​are respectively connected to the second Velcro.

[0035] The left and right panels 31, 32 feature a split design, allowing them to be folded over to either side as needed during an examination, exposing the corresponding chest area while the unfolded side remains covered. A second Velcro strip on the front of the neckband 2 secures the neck edges of the left and right panels 31, 32 to a pre-set position on the neckband 2 through the adhesive action of the hook and fleece surfaces, preventing the panels from shifting during folding. For example, to examine the left breast, the left panel 31 need only be folded downward and the right panel 32 secured with the second Velcro strip. At this point, the right panel 32 still covers the patient's right chest and abdomen, minimizing exposure. This solution allows for unilateral or bilateral exposure, depending on actual needs, during the examination, reducing the exposed area of ​​the patient's upper body. The Velcro strip's quick-fix feature ensures the panels' stability after folding, preventing them from accidentally falling off due to excessive movement, thus balancing examination efficiency and patient comfort.

[0036] The lower parts of the left sheet 31 and the right sheet 32 ​​are connected by a second zipper 8 . The height position and length of the second zipper 8 are consistent with those of the first zipper 5 , and the slider of the second zipper 8 is connected to the second buckle 7 .

[0037] By sliding the second buckle 7 along the second zipper 8 , the opening and closing positions of the second zipper 8 and the first zipper 5 can be adjusted synchronously, and the opening and closing positions are the same, thereby achieving the bending height adjustment of the lower parts of the left and right sheets 31 and 32 .

[0038] As the second buckle 7 slides along the guide rail, the slider of the second zipper 8 is simultaneously driven, causing the opening and closing position of the lower portions of the left and right panels 31, 32 to align with the opening and closing height of the first zipper 5. The second buckle 7 drives the slider of the second zipper 8 to move along the guide rail, adjusting the bending height of the lower portions of the left and right panels 32 at the waist and abdomen. During this process, the necks of the left and right panels 31, 32 remain detachably connected to the neckband 2, ensuring that the exposed chest area can be adjusted independently while the abdomen and back remain covered. During operation, the patient only needs to pull the second buckle 7 with one hand to complete the symmetrical adjustment of the two panels, avoiding localized compression or thermal insulation failure caused by asymmetric opening and closing of the two sides.

[0039] The necks of the left and right panels 31 and 32 are detachably connected to the second Velcro, and the left and right panels 31 and 32 remain disconnected from the necks to the second zipper 8 .

[0040] The first zipper 5, the second zipper 8, the first buckle 6, and the second buckle 7 are all made of X-ray transmissive medical materials. X-ray transmissive medical materials refer to biocompatible materials with high X-ray transmittance. Specifically, they can be made of non-metallic polymer materials such as polycarbonate, polyethylene, or polypropylene. These materials ensure structural strength while not forming artifacts in the mammography image. Among them, the first zipper 5 and the second zipper 8 refer to the opening and closing devices used to connect the sheet and the vest 1, and the left sheet 31 and the right sheet 32. Specifically, they can be implemented by medical-grade plastic zippers with a continuous tooth structure. The teeth and the fabric tape both meet the requirements of no X-ray obstruction. Among them, the first buckle 6 and the second buckle 7 refer to the fixing devices used to connect the belt 4 and the zipper slider. Specifically, they can be implemented by injection-molded nylon buckles. The buckles do not have a metal spring structure inside to avoid interference with imaging.

[0041] When the gown is worn, the chest covering is opened and closed via a first zipper 5 and a second zipper 8. The first and second buckles 6 and 7 connecting the zipper sliders are linked to the waist belt 4. Because all zippers and buckles are made of X-ray-transmissive medical materials, they do not obstruct X-ray films or create interfering shadows during mammography examinations, ensuring the integrity of breast tissue images. Furthermore, these medical materials meet biosafety requirements, preventing allergic reactions from contact with the patient's skin.

[0042] The belt 4 is a woven belt, and the hardness of the belt 4 is configured so that the second buckle 7 and the first buckle 6 can maintain the same height and slide synchronously. A woven belt refers to a belt-like structure formed by interweaving fiber materials through warp and weft. Specifically, it can be woven with polyester fiber or nylon material, and has the characteristics of being flexible and not easy to deform. The flexibility of the woven belt enables it to fit the patient's waist and abdominal curve, and the hardness configuration prevents the belt 4 from local collapse or distortion during the pulling process. When the second buckle 7 moves along the guide rail, the rigid support force of the woven belt is transmitted to the first buckles 6 on both sides, so that the two are always at the same horizontal height during the sliding process, avoiding the displacement of the opening and closing positions of the zippers on both sides due to the deformation of the belt 4. As a result, the adjustment action of the folded part of the sheet can act evenly on both sides of the patient's body, ensuring the symmetrical fit of the examination suit in the waist and abdomen area.

[0043] This application ensures the stable operation of the waist and abdomen adjustment mechanism of the examination suit, ensuring that the folded height of the sheet accurately matches the patient's body shape. During the examination, the patient can obtain uniform waist and abdomen support without repeated adjustments, maintaining warmth while avoiding the risk of privacy exposure caused by adjustment deviations, thereby improving the efficiency and comfort of the examination operation.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An examination suit suitable for use in conjunction with a mammography examination, characterized in that: include: A vest (1) having a foldable sheet (3) at the upper front portion; A scarf (2) is integrally connected to the vest (1); a first Velcro is used to connect the shoulder of the sheet (3) and the shoulder of the vest (1); and a waist belt (4) is provided at the waist of the vest (1) and is used to adjust the fit between the vest (1) and the sheet (3) at the waist and abdomen of the patient by pulling.

2. The examination suit suitable for use in conjunction with mammography according to claim 1, characterized in that: The left and right sides of the sheet (3) are respectively connected to corresponding positions of the vest (1) through a first zipper (5), and a first buckle (6) is provided on a slider of each first zipper (5). The first buckle (6) is connected to the waist belt (4) and is used to adjust the opening and closing position of the first zipper (5) by sliding the waist belt (4).

3. The examination suit suitable for use in conjunction with mammography according to claim 2, characterized in that: The waist belt (4) is provided with a second buckle (7) in the middle of the front side. The waist belt (4) passes around the front sides of the vest (1) and the sheet (3). Both ends of the waist belt (4) extend from the second buckle (7). By pulling the ends of the waist belt (4), the waist belt (4) can be tightened so that the vest (1) and the sheet (3) fit tightly at the waist and abdomen.

4. The examination suit suitable for use in conjunction with mammography according to claim 3, characterized in that: A vertical guide rail is provided in the middle of the sheet (3), and the second buckle (7) is connected by sliding up and down along the guide rail. When the second buckle (7) slides along the guide rail, it can drive the waist belt (4) and the first buckles (6) on both sides to slide synchronously along the first zipper (5), thereby achieving height adjustment of the folding position of the sheet (3).

5. The examination suit suitable for use in conjunction with mammography examination according to claim 3, characterized in that: The sheet (3) is divided into a left sheet (31) and a right sheet (32) that can be folded independently. A second Velcro is provided on the front side of the neckband (2), and the necks of the left sheet (31) and the right sheet (32) are respectively connected to the second Velcro.

6. The examination suit suitable for use in conjunction with mammography examination according to claim 5, characterized in that: The lower parts of the left sheet (31) and the right sheet (32) are connected via a second zipper (8), the height position and length of the second zipper (8) are consistent with those of the first zipper (5), and the slider of the second zipper (8) is connected to the second buckle (7).

7. The examination suit suitable for use in conjunction with mammography according to claim 6, characterized in that: By sliding the second buckle (7) along the second zipper (8), the opening and closing positions of the second zipper (8) and the first zipper (5) can be synchronously adjusted, and the opening and closing positions are the same, thereby achieving adjustment of the bending height of the lower parts of the left sheet (31) and the right sheet (32).

8. The examination suit suitable for use in conjunction with mammography according to claim 6, characterized in that: The necks of the left sheet (31) and the right sheet (32) are detachably connected to the second Velcro, and the left sheet (31) and the right sheet (32) remain in a non-connected state from the neck to the second zipper (8).

9. The examination suit suitable for use in conjunction with mammography according to claim 6, characterized in that: The first zipper (5), the second zipper (8), the first buckle (6) and the second buckle (7) are all made of X-ray transmissive medical material.

10. The examination suit suitable for use in conjunction with mammography examination according to claim 3, characterized in that: The waist belt (4) is a braided belt, and the hardness of the waist belt (4) is configured so that the second buckle (7) and the first buckle (6) can slide synchronously while maintaining the same height.

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