CN114652573A - Breast cancer postoperative rehabilitation training device - Google Patents

Abstract

The invention discloses a postoperative rehabilitation training device for breast cancer, which comprises a base, a seat, a lifting mechanism, a transverse adjusting mechanism, a turnover mechanism, an arm fixing mechanism, a revolving mechanism and a control screen, wherein the base is provided with a seat frame; the seat is detachably connected to the base, the base on the rear side of the seat is connected with the adjusting track, and the control screen is connected to the base at the front end of the seat; the bottom of the lifting mechanism is connected with the adjusting track in a sliding or fixed mode, and the transverse adjusting mechanism is connected to the top of the lifting mechanism; the turnover mechanism is connected to the transverse adjusting mechanism, the revolving mechanism is connected to the turnover mechanism, and the arm fixing mechanism is connected to the revolving mechanism; the arm fixing mechanism and the rotating mechanism are kept in a horizontal state, or the arm fixing mechanism and the rotating mechanism are driven by the turnover mechanism to be kept in a vertical state. The invention can complete a plurality of limb movements such as arm swinging, arm rotation and the like, and achieves a rehabilitation training plan after the breast cancer operation by adjusting regular movement indexes such as amplitude, frequency, period and the like through the control screen.

Description

Rehabilitation training device after breast cancer surgery

technical field

The invention relates to the technical field of medical equipment, in particular to a postoperative rehabilitation training device for breast cancer.

Background technique

Breast cancer is the malignant tumor with the highest morbidity and mortality in women worldwide, causing at least 600,000 deaths every year. Surgery is an important treatment for early breast cancer. Breast cancer surgery will remove part or all of the breast tissue of the patient to create a cavity, so that the basal skin and epidermal skin cannot stick together. In particular, subcutaneous effusions are prone to occur in flaps under the armpit, anterior chest wall, or under the clavicle. If you do not carry out timely rehabilitation exercises, it will cause various complications such as upper limb edema and functional limitation. Therefore, it is necessary to focus on elbow and shoulder exercises within 8 to 15 days after surgery to prevent long-term joint immobilization and cause intra-articular adhesions. , promote the formation of loose connective tissue under the scar tissue, expand the range of motion of the upper limbs, and shorten the recovery time of the upper limbs.

At present, the hospital does not have a complete set of rehabilitation training facilities for this kind of rehabilitation, and relies entirely on the patient's own irregular and non-standard operations to achieve the purpose of relief, which not only delays the recovery time, but also causes the patient's incompatibility due to irregular exercise movements. bring certain health hazards.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a rehabilitation training device for breast cancer surgery, which can complete multiple limb movements such as arm swing and rotation, and adjust the regular movement indicators such as amplitude, frequency and cycle through the control screen to achieve breast cancer surgery. Rehabilitation training plan to solve the problems raised in the above background art.

To achieve the above object, the present invention provides the following technical solutions:

A rehabilitation training device for breast cancer surgery, comprising a base, a seat, a lifting mechanism, a lateral adjustment mechanism, a turning mechanism, an arm fixing mechanism, a rotating mechanism and a control screen; the seat is detachably connected to the base, and the seat is detachable. An adjustment track is connected to the base on the back side of the chair, and the control screen is connected to the base of the front end of the seat; the bottom of the lifting mechanism is slidably or fixedly connected to the adjustment track, and the lateral adjustment mechanism is connected to the top of the lifting mechanism; the turning mechanism is connected to the lateral adjustment mechanism, the rotating mechanism is connected to the turning mechanism, the arm fixing mechanism is connected to the rotating mechanism, and one end of the arm fixing mechanism extends to the middle of the rotating mechanism; the arm fixing mechanism and the rotating mechanism keep the The horizontal state, or the turning mechanism drives the arm fixing mechanism and the rotating mechanism to maintain the vertical state.

A further improvement scheme of the present invention is that the adjusting rail is semicircular, and the two ends of the adjusting rail are located on the left and right sides of the seat, and the adjusting rail is provided with a T-shaped chute in longitudinal section; the lifting mechanism It includes a hollow threaded sleeve and an adjusting rod, the bottom of the hollow threaded sleeve is clamped in the chute of the adjusting track, and the outer wall thread of the hollow threaded sleeve is matched with a locking nut; the adjusting rod is a multi-stage lifting and shrinking rod, which is arranged vertically The bottom end of the adjusting rod is fixed in the hollow threaded sleeve.

A further improvement scheme of the present invention is that the lateral adjustment mechanism includes a sliding block and two sliding rods; one end of the sliding rod is horizontally connected to the top of the adjusting rod up and down, the sliding block is slidably connected to the two sliding rods, and the two sliding rods are slidably connected to each other. One end of the rod is connected with a baffle plate; the top end of the sliding block is provided with a threaded hole, and a locking bolt is threaded in the threaded hole, and the locking bolt can abut against the outer wall of the upper sliding rod.

A further improvement scheme of the present invention is that the turning mechanism includes a U-shaped plate, an L-shaped rod, a translation component, a limit plate and a cross bar; the U-shaped plate is vertically connected to the inner side of the slider, and the translation component is vertically connected On the inner side of the U-shaped plate; one end of the L-shaped rod is hinged to the translation component, one end of the limit plate is symmetrically hinged on both sides of the top of the U-shaped plate, and the two ends of the crossbar are connected to the bottom of the two limit plates. and the transverse rod is connected to the L-shaped rod in rotation; the translation component drives the L-shaped rod to move up and down, and makes the outer end of the L-shaped rod turn over in the range of 0-90°.

A further improvement scheme of the present invention is that the translation assembly includes a first motor, a driving gear, a driven gear, a lead screw and a nut block; the first motor is connected to the bottom end of the U-shaped plate, and the driving gear is connected to the first motor The power output end of the motor; the two ends of the lead screw are rotatably connected to the upper and lower ends of the U-shaped plate, the two driven gears are respectively connected to the bottom ends of the two lead screws, and the driven gear meshes with the driving gear, and the two driven gears are meshed with the driving gear. Each nut block is screwed to the two lead screws respectively.

A further improvement scheme of the present invention is that the outer end of the nut block is connected with a lug plate, the bottom end of the U-shaped rod is connected with a fork plate, and the fork plate is connected with the lug plate through a bolt; There is a through hole, and the cross bar is rotatably fitted in the through hole.

A further improvement scheme of the present invention is that the rotating mechanism includes a rotating support, a driving component and an annular track; the rotating support is in the shape of a triangle as a whole, the annular track is connected to the top end of the L-shaped rod, and the driving component is connected to the rotating support and the driving assembly drives the rotating support to rotate along the annular track.

A further improvement scheme of the present invention is that the rotating support includes a triangular plate A and a triangular plate B, the two ends of the triangular plate A and the triangular plate B are connected by a supporting plate to form an integral structure, and the annular track is located between the triangular plate A and the triangular plate B, and The annular track is located between the two support plates, and the triangular plate B is provided with an arc-shaped notch for passing through the L-shaped rod.

A further improvement scheme of the present invention is that the drive assembly includes a second motor, a driving roller and two driven rollers; grooves are provided on the inner and outer surfaces of the annular track, and the second motor is connected to At the bottom end of the triangular plate B, the driving roller is connected to the power output end of the second motor, and the driving roller is rotatably connected to the groove on the inner surface of the annular track; the driven roller is connected to the triangular plate A and the triangular plate B through the rotation of the axle. and the driven roller is rotatably connected to the groove on the outer surface of the annular track.

A further improvement scheme of the present invention is that the arm fixing mechanism includes an electric push rod, a universal head and an arm cover; the electric push rod is connected to the top of the triangular plate A, and the power output end of the electric push rod extends to the end of the annular track. at the center of the circle; the universal head is connected to the power output end of the electric push rod, and the arm sleeve is connected to the universal head; the arm sleeve is an open structure, one end of the arm sleeve is connected with a strap, and the other end is connected with a lock buckle.

Beneficial effects of the present invention:

First, the breast cancer postoperative rehabilitation training device of the present invention can complete multiple limb movements such as arm swing and rotation, and can achieve breast cancer postoperative rehabilitation training by adjusting the amplitude, frequency, cycle and other regular movement indicators through the control screen. plan.

Second, in the breast cancer postoperative rehabilitation training device of the present invention, the arm fixing mechanism and the rotating mechanism are kept in a horizontal state, or the overturning mechanism drives the arm fixing mechanism and the rotating mechanism to maintain a vertical state, so as to meet the different training methods in different rehabilitation periods. .

Thirdly, in the post-operative rehabilitation training device for breast cancer of the present invention, the two ends of the adjusting track are located on the left and right sides of the seat to meet the rehabilitation needs of the left and right hands of different patients.

Fourth, in the post-operative rehabilitation training device for breast cancer of the present invention, the adjusting rod can adjust the height of the turning mechanism, the arm fixing mechanism and the rotating mechanism from the ground up and down, so as to meet the rehabilitation needs of patients of different heights.

Fifth, in the breast cancer postoperative rehabilitation training device of the present invention, the lateral adjustment mechanism can adjust the distance between the turning mechanism, the arm fixing mechanism, the rotating mechanism and the seat, so as to meet the rehabilitation needs of patients with different arm lengths.

Sixth, in the post-operative rehabilitation training device for breast cancer of the present invention, the arm sleeve is installed on the universal head to ensure that the patient's arm angle is not bound, and the arm comfort during rehabilitation training is ensured.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention during the initial rehabilitation training of postoperative rehabilitation.

2 is a schematic diagram of the overall structure of the present invention during post-operative rehabilitation and post-rehabilitation training.

FIG. 3 is a schematic structural diagram of the lateral adjustment mechanism, the turning mechanism, the arm fixing mechanism, and the looping mechanism of the present invention.

FIG. 4 is a partial structural schematic diagram of the turning mechanism and the rotating mechanism of the present invention.

FIG. 5 is a partial structural schematic diagram of the revolving mechanism of the present invention.

FIG. 6 is a schematic structural diagram of the turning mechanism of the present invention.

In the picture: 1-base, 101-adjustment track, 102-chute, 2-seat, 3-lifting mechanism, 301-hollow threaded sleeve, 302-adjustment rod, 303-lock nut, 4-transverse adjustment mechanism, 401-Slider, 402-Slide rod, 403-Baffle plate, 404-Lock bolt, 5-Turn mechanism, 501-U-shaped plate, 502-L-shaped rod, 503-Translation component, 5031-First motor, 5032 -Driver gear, 5033-driven gear, 5034-lead screw, 5035-nut block, 504-limit plate, 505-crossbar, 506-ear plate, 507-fork plate, 6-arm fixing mechanism, 601-electric Push rod, 602-universal head, 603-arm cover, 604-strap, 605-lock, 7-ring rotation mechanism, 701-rotating support, 7011-triangular plate A, 7012-triangular plate B, 7013-support plate , 7014-notch, 702-drive assembly, 7021-second motor, 7022-active roller, 7023-driven roller, 703-ring track, 7031-groove, 8-control panel.

Detailed ways

The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1: As shown in Figures 1-6, a rehabilitation training device after breast cancer surgery includes a base 1, a seat 2, a lifting mechanism 3, a lateral adjustment mechanism 4, a turning mechanism 5, an arm fixing mechanism 6, and a circular rotation mechanism. The mechanism 7 and the control screen 8; the seat 2 is detachably connected to the base 1, the base 1 on the rear side of the seat 2 is connected with an adjustment track 101, and the control screen 8 is connected to the base 1 at the front end of the seat 2; The bottom of the lifting mechanism 3 is slidably or fixedly connected to the adjustment track 101, the lateral adjustment mechanism 4 is connected to the top of the lifting mechanism 3; The arm fixing mechanism 6 is connected to the rotating mechanism 7, and one end of the arm fixing mechanism 6 extends to the middle of the rotating mechanism 7; the arm fixing mechanism 6 and the rotating mechanism 7 are kept in a horizontal state, or the turning mechanism 5 drives The arm fixing mechanism 6 and the revolving mechanism 7 maintain a vertical state.

The adjusting rail 101 is semicircular, and the two ends of the adjusting rail 101 are located on the left and right sides of the seat 2 . The adjusting rail 101 is provided with a T-shaped chute 102 in longitudinal section; the lifting mechanism 3 It includes a hollow threaded sleeve 301 and an adjusting rod 302. The bottom of the hollow threaded sleeve 301 is clamped in the chute 102 of the adjusting track 101, and the outer wall of the hollow threaded sleeve 301 is threaded with a locking nut 303; the adjusting rod 302 is a multi-section The bottom end of the vertically arranged adjusting rod 302 is fixed in the hollow threaded sleeve 301 .

The lateral adjustment mechanism 4 includes a sliding block 401 and two sliding rods 402; one end of the sliding rod 402 is horizontally connected to the top of the adjusting rod 302 up and down, and the sliding block 401 is slidably connected to the two sliding rods 402. One end of the sliding rod 402 is connected with a baffle plate 403 ; the top end of the sliding block 401 is provided with a threaded hole, and a locking bolt 404 is threaded in the threaded hole, and the locking bolt 404 can abut against the outer wall of the upper sliding rod 402 .

The turning mechanism 5 includes a U-shaped plate 501, an L-shaped rod 502, a translation component 503, a limit plate 504 and a cross bar 505; the U-shaped plate 501 is vertically connected to the inner side of the slider 401, and the translation component 503 Vertically connected to the inner side of the U-shaped plate 501; one end of the L-shaped rod 502 is hinged to the translation component 503, one end of the limit plate 504 is symmetrically hinged to both sides of the top of the U-shaped plate 501, and the two ends of the cross rod 505 Connected between the bottoms of the two limit plates 504, and the cross bar 505 is rotatably connected to the L-shaped rod 502; the translation component 503 drives the L-shaped rod 502 to move up and down, and makes the outer end of the L-shaped rod 502 at 0-90 Flip within the range of °.

The translation assembly 503 includes a first motor 5031, a driving gear 5032, a driven gear 5033, a lead screw 5034 and a nut block 5035; the first motor 5031 is connected to the bottom end of the U-shaped plate 501, and the driving gear 5032 is connected to At the power output end of the first motor 5031; the two ends of the lead screw 5034 are rotatably connected to the upper and lower ends of the U-shaped plate 501, and the two driven gears 5033 are respectively connected to the bottom ends of the two lead screws 5034, and from The driving gear 5033 meshes with the driving gear 5032, and the two nut blocks 5035 are screwed to the two lead screws 5034 respectively.

Wherein, the outer end of the nut block 5035 is connected with a lug plate 506, the bottom end of the U-shaped rod is connected with a fork plate 507, and the fork plate 507 is connected with the lug plate 506 through a latch; the bending part of the U-shaped rod is provided with Through holes, the cross bars 505 are rotatably fitted in the through holes.

The rotating mechanism 7 includes a rotating support 701, a driving assembly 702 and an annular track 703; the rotating support 701 is triangular as a whole, the annular track 703 is connected to the top end of the L-shaped rod 502, and the driving assembly 702 is connected to the rotating on the support 701 , and the driving assembly 702 drives the rotating support 701 to rotate along the annular track 703 .

The rotating support 701 includes a triangular plate A7011 and a triangular plate B7012. Both ends of the triangular plate A7011 and the triangular plate B7012 are connected by a supporting plate 7013 to form an integral structure. The annular track 703 is located between the triangular plate A7011 and the triangular plate B7012, and the annular track 703 It is located between the two support plates 7013 , and the triangular plate B7012 is provided with an arc-shaped gap 7014 for passing through the L-shaped rod 502 .

The drive assembly 702 includes a second motor 7021, a driving roller 7022 and two driven rollers 7023; the annular track 703 is provided with grooves 7031 on the inner and outer surfaces, and the second motor 7021 is connected to At the bottom end of the triangular plate B7012, the driving roller 7022 is connected to the power output end of the second motor 7021, and the driving roller 7022 is rotatably connected to the groove 7031 on the inner surface of the annular track 703; the driven roller 7023 is connected by the rotation of the axle. Between the triangle plate A7011 and the triangle plate B7012, and the driven roller 7023 is rotatably connected to the groove 7031 on the outer surface of the annular track 703.

The arm fixing mechanism 6 includes an electric push rod 601, a universal head 602 and an arm sleeve 603; the electric push rod 601 is connected to the top of the triangular plate A7011, and the power output end of the electric push rod 601 extends to the annular track 703 the center of the circle; the universal head 602 is connected to the power output end of the electric push rod 601, and the arm sleeve 603 is connected to the universal head 602; the arm sleeve 603 is an open structure, and one end of the arm sleeve 603 is connected with a strap The belt 604 is connected with a lock 605 at the other end.

The specific working principle of this embodiment is as follows:

In the first two weeks of postoperative recovery, the arm lift is too small, the patient sits on the seat 2, slides the hollow threaded tube to the left or right end of the adjustment track 101, and locks it with the locking nut 303; adjust the adjustment as needed The height of the rod 302, the patient inserts the arm into the inner circle of the annular track 703 and sags naturally, the arm is fixed in the arm sleeve 603 by the strap 604 and the lock 605, the control panel 8 is located in the electric control box with built-in controller, by adjusting The exercise mode on the touch control screen 8 is selected, and the electric push rod 601 drives the arm to reciprocate after receiving the instruction.

After two weeks of postoperative rehabilitation, the seat 2 can be removed, the height of the adjusting rod 302 can be adjusted as required, and the driving gear 5032 can be driven by the first motor 5031 to rotate. The rotation of 5034 drives the lateral movement of the nut block 5035. Under the action of the limit rod, the L-shaped rod 502 has a turning range of 0-90°, and the turning mechanism 5 is turned to 90°, that is, the annular track 703 is in a vertical downward state. At this time, the patient's arm is lifted and inserted into the inner ring of the annular track 703, and the arm is fixed in the arm sleeve 603 by the strap 604 and the lock 605. The arm moves in a circular motion around the annular track 703 , that is, through the second motor 7021 with driving rollers 7022 , so that the rotating support 701 makes a circular motion along the annular track 703 .

The above-mentioned embodiments are only intended to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with the art to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present invention. All equivalent transformations or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A postoperative rehabilitation training device for breast cancer, characterized in that it comprises a base (1), a seat (2), a lifting mechanism (3), a lateral adjustment mechanism (4), a turning mechanism (5), and an arm fixing mechanism (6), the rotary mechanism (7) and the control screen (8); The seat (2) is detachably connected to the base (1), an adjustment track (101) is connected to the base (1) on the rear side of the seat (2), and the control screen (8) is connected to the seat (2). ) on the base (1) at the front end; The bottom of the lifting mechanism (3) is slidably or fixedly connected to the adjustment track (101), and the lateral adjustment mechanism (4) is connected to the top of the lifting mechanism (3); The inversion mechanism (5) is connected to the lateral adjustment mechanism (4), the rotation mechanism (7) is connected to the inversion mechanism (5), the arm fixing mechanism (6) is connected to the rotation mechanism (7), and the arm is connected to the rotation mechanism (7). One end of the fixing mechanism (6) extends to the middle of the rotating mechanism (7); The arm fixing mechanism (6) and the rotating mechanism (7) maintain a horizontal state, or the turning mechanism (5) drives the arm fixing mechanism (6) and the rotating mechanism (7) to maintain a vertical state. 2. The postoperative rehabilitation training device for breast cancer according to claim 1, characterized in that: the adjusting rail (101) is semicircular, and both ends of the adjusting rail (101) are located on the seat (2) The left and right sides of the adjusting track (101) are provided with a T-shaped chute (102) in longitudinal section; the lifting mechanism (3) includes a hollow threaded sleeve (301) and an adjusting rod (302), a hollow threaded sleeve The bottom of (301) is clamped in the chute (102) of the adjusting track (101), and the outer wall of the hollow threaded sleeve (301) is threaded with a locking nut (303); the adjusting rod (302) is a multi-section type The bottom end of the vertically arranged adjusting rod (302) is fixed in the hollow threaded sleeve (301). 3. The postoperative rehabilitation training device for breast cancer according to claim 2, characterized in that: the lateral adjustment mechanism (4) comprises a slider (401) and two sliding bars (402); the sliding bars One end of (402) is horizontally connected to the top of the adjusting rod (302) up and down, the slider (401) is slidably connected to two sliding rods (402), and one end of the two sliding rods (402) is connected with a baffle plate (403); The top end of the slider (401) is provided with a threaded hole, a locking bolt (404) is threaded in the threaded hole, and the locking bolt (404) can abut against the outer wall of the upper sliding rod (402). 4. The postoperative rehabilitation training device for breast cancer according to claim 3, wherein the turning mechanism (5) comprises a U-shaped plate (501), an L-shaped rod (502), and a translation component (503) , limit plate (504) and cross bar (505); the U-shaped plate (501) is vertically connected to the inner side of the slider (401), and the translation component (503) is vertically connected to the inner side of the U-shaped plate (501). The inner side; one end of the L-shaped rod (502) is hinged to the translation component (503), one end of the limit plate (504) is symmetrically hinged to both sides of the top of the U-shaped plate (501), and the two sides of the cross rod (505) The end is connected between the bottoms of the two limit plates (504), and the cross bar (505) is rotatably connected to the L-shaped rod (502); the translation assembly (503) drives the L-shaped rod (502) to move up and down, and makes the The outer end of the L-shaped rod (502) is turned over in the range of 0-90°. 5. The postoperative rehabilitation training device for breast cancer according to claim 4, wherein the translation component (503) comprises a first motor (5031), a driving gear (5032), and a driven gear (5033) , lead screw (5034) and nut block (5035); the first motor (5031) is connected to the bottom end of the U-shaped plate (501), and the driving gear (5032) is connected to the power output end of the first motor (5031) ; The two ends of the lead screw (5034) are rotatably connected to the upper and lower ends of the U-shaped plate (501), and the two driven gears (5033) are respectively connected to the bottom ends of the two lead screws (5034), and driven The gear (5033) meshes with the driving gear (5032), and the two nut blocks (5035) are screwed to the two lead screws (5034) respectively. 6. The postoperative rehabilitation training device for breast cancer according to claim 5, wherein the outer end of the nut block (5035) is connected with an ear plate (506), and the bottom end of the U-shaped rod is connected with a fork The plate (507), the fork plate (507) is connected with the lug plate (506) through the latch; the bending part of the U-shaped rod is provided with a through hole, and the cross rod (505) is rotatably fitted in the through hole. 7. The postoperative rehabilitation training device for breast cancer according to any one of claims 4-6, characterized in that: the revolving mechanism (7) comprises a rotating support (701), a driving component (702) and the annular track (703); the rotating support (701) is triangular as a whole, the annular track (703) is connected to the top end of the L-shaped rod (502), and the drive assembly (702) is connected to the rotating support (701), And the driving assembly (702) drives the rotating support (701) to rotate along the annular track (703). 8 . The postoperative rehabilitation training device for breast cancer according to claim 7 , wherein the rotating support ( 701 ) comprises a triangle plate A ( 7011 ) and a triangle plate B ( 7012 ), the triangle plate A ( 7011 ) and the triangle plate B ( 7012 ). The two ends of the triangular plate B (7012) are connected to form an integral structure by a support plate (7013), the annular track (703) is located between the triangular plate A (7011) and the triangular plate B (7012), and the annular track (703) is located between the two Between the support plates (7013), and on the triangular plate B (7012), there is an arc-shaped gap (7014) for passing through the L-shaped rod (502). 9 . The postoperative rehabilitation training device for breast cancer according to claim 8 , wherein the driving component ( 702 ) comprises a second motor ( 7021 ), an active roller ( 7022 ) and two driven rollers. 10 . (7023); grooves (7031) are provided on the inner and outer surfaces of the annular track (703), the second motor (7021) is connected to the bottom end of the triangular plate B (7012), and the driving roller (7022) is connected to the power output end of the second motor (7021), and the driving roller (7022) is rotatably connected to the groove (7031) on the inner surface of the annular track (703); the driven roller (7023) is rotatably connected through the axle Between the triangle plate A (7011) and the triangle plate B (7012), and the driven roller (7023) is rotatably connected to the groove (7031) on the outer surface of the annular track (703). 10. The postoperative rehabilitation training device for breast cancer according to claim 8 or 9, wherein the arm fixing mechanism (6) comprises an electric push rod (601), a universal head (602) and an arm sleeve (603); the electric push rod (601) is connected to the top of the triangle plate A (7011), and the power output end of the electric push rod (601) extends to the center of the annular track (703); the universal head ( 602) is connected to the power output end of the electric push rod (601), and the arm cover (603) is connected to the universal head (602); the arm cover (603) is an open structure, and one end of the arm cover (603) is connected There is a strap (604), and the other end is connected with a lock (605).

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