Traction device

Abstract

The application provides a pulling device, which comprises a supporting unit and an elastic stretching unit. The elastic stretching unit comprises a rotating part connected with the supporting unit and capable of rotating along a first track; and a telescopic part with a stress maintaining part, the telescopic part being connected with the rotating part and capable of being elongated or contracted along with the rotating part rotating along the first track and generating a substantially constant pulling force via the stress maintaining part, so that when an operator wearing a lead suit moves the pulling device, the pulling force on the operator or the lead suit is constant and the problem that the lead suit is light or heavy due to the change of moving range is solved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a traction device. Background Technology

[0002] Radiation is an indispensable tool in modern medicine, possessing high penetrability and energy carrying capacity. It can release large amounts of energy instantaneously and cause damage. It can penetrate not only human cells but also the various barriers humans use to protect themselves, thus harming human health. Currently, in endoscopic interventional diagnosis and treatment of digestive system diseases, only during ERCP (Endoscopic Retrograde Cholangiopancreatography) procedures do medical personnel routinely wear lead aprons to shield themselves from radiation for the diagnosis and treatment of biliary and pancreatic diseases. During this process, medical personnel must wear lead aprons weighing 5-12 kilograms to perform surgery, examinations, or instrument operations. However, the lead content of a lead apron is directly proportional to its weight; the higher the lead content, the heavier the apron. ERCP nurses are under high-frequency, long-term, high-intensity conditions, and maintaining the same posture while wearing lead aprons can lead to discomfort in the shoulders, neck, and lower back. For those with pre-existing cervical or lumbar disc herniation, this further exacerbates occupational hazards.

[0003] Secondly, the proper storage and organization of lead aprons is an important part of clinical nursing management. Due to the special material of lead aprons, they cannot be folded or placed haphazardly. Therefore, it is crucial for medical staff to properly store the lead aprons after removal during surgical breaks or post-operatively. Often, due to limited time between surgeries, the aprons are simply tossed aside after removal without being promptly laid flat. This easily leads to wrinkles and clumping, which over time can damage the material, causing lead loss at the wrinkles and reducing the apron's protective function. A height-adjustable lead apron holder would improve the convenience for medical staff in retrieving and storing lead aprons and ensure effective maintenance. It would also save space occupied by the lead apron storage rack.

[0004] Currently available patented lead apron support frames are bulky, occupying space around the wearer. When multiple operators need to work together on a certain step, the obstruction of the lead apron support frame leads to time-consuming coordination and inconvenience in cooperation between operators. For example, the traction devices in two patents, CN206639597U (invention title: "Protective Lead Apron for Interventional Surgery of Complex Lesions") and CN205158914U (invention title: "A Mobile Protective Lead Apron Device"), are both bulky, making it difficult for users to turn around and affecting the space occupied. This results in no one being able to stand behind the operator, and people needing to detour to pass, seriously affecting the efficiency of examinations and surgeries. For example, the patent with publication number CN210956194U, entitled "A movable lead apron support for interventional surgery," while addressing the shortcomings of the two patents mentioned above, still suffers from inconvenient movement and inconsistent force. When the operator, wearing a lead apron, moves the support, torque can easily form in the horizontal and vertical guide rails, causing the rails to jam or increasing resistance. The operator still needs to adjust the height of the support, and the inconsistent force can lead to fluctuations in the weight of the lead apron.

[0005] Therefore, there is an urgent need for a traction device that can provide constant support for lead aprons. Summary of the Invention

[0006] In view of the above problems, this application provides a traction device to overcome or at least partially solve the above problems.

[0007] This application provides a traction device, which includes a support unit and an elastic tension unit. The elastic tension unit includes: a rotating member connected to the support unit and rotatable along a first trajectory; and a telescopic member having a stress-maintaining portion. The telescopic member is connected to the rotating member and can extend or contract as the rotating member rotates along the first trajectory, and generates a substantially constant tension through the stress-maintaining portion.

[0008] Optionally, the telescopic member is formed by rolling a metal plate around the rotating member, the stress-maintaining part is the bent part of the metal plate that is about to detach from the rotating member, and the deformation area of ​​the stress-maintaining part that generates stress is basically fixed.

[0009] Optionally, the support unit includes: a guide rail assembly having a track; a rotating unit coupled to the guide rail assembly, the rotating unit being movable along the extension direction of the track and capable of causing the elastic stretching unit to rotate relative to the track along a second trajectory; and a support hanger coupled to the telescopic member, the support hanger being used to suspend the lead apron, which is worn by the operator, so that the operator can move in conjunction with the extension direction of the track, the second trajectory, and the telescopic direction of the telescopic member when wearing the support hanger.

[0010] Optionally, the rotating unit includes a first rotating part and a second rotating part, the first rotating part and the second rotating part are rotatably connected, and the rotating component is connected to the second rotating part.

[0011] Optionally, the rotating unit is connected to the guide rail assembly via a first tension member, and the supporting hanger is connected to the telescopic member via a second tension member.

[0012] Optionally, the first rotating part is connected to the first pulling member, the rotating member is sleeved on the second rotating part and can rotate around the second rotating part along the first trajectory, one end of the telescopic member is connected to the rotating member, and the other end is a free end, the free end is connected to the second pulling member, and the free end extends or contracts as the rotating member rotates around the second rotating part along the first trajectory.

[0013] Optionally, the traction device further includes a protection unit, the upper end of which is connected to at least one of the rotating unit or the telescopic member to fix the upper end connection position of the protection unit, and the lower end of which is connected to the second traction member and can move within a preset range with the second traction member to limit the extension length of the telescopic member.

[0014] Optionally, the first rotating part is formed as an O-ring, and the second rotating part is formed as a shackle.

[0015] Optionally, the traction device further includes a housing, which is fitted over at least the outside of the rotating unit and the telescopic member.

[0016] Optionally, the outer shell includes an upper shell, an elastic shell, and a lower shell. The two ends of the elastic shell are respectively connected to the upper shell and the lower shell and can extend and retract along the extension and retraction direction of the telescopic member. The upper shell is fixed to the rotating unit and can rotate relative to the first traction member. The lower shell is fixedly connected to the second traction member.

[0017] Optionally, the support hanger includes a support frame, two shoulder support members, and shoulder pads. The support frame is connected and fixed to the lower end of the second pulling member. The two shoulder support members are respectively disposed on both ends of the support frame to support the shoulders of the lead apron. Each shoulder support member includes multiple arc-shaped plates arranged side by side and spaced apart. The shoulder pads are disposed on the shoulder support members.

[0018] Optionally, fixing members are provided between the first pulling member and the first rotating part, between the second pulling member and the second rotating part, and between the second pulling member and the supporting hanger, respectively, to strengthen the connection.

[0019] As can be seen from the above technical solutions, in the embodiments of this application, the telescopic member can extend or contract as the rotating member rotates along the first trajectory, and generate a basically constant tension through the stress maintaining part. Thus, when the operator wears a lead apron and drives the traction device to move, the tension on the operator or the lead apron is constant, and the lead apron will not be affected by the change in the range of movement.

[0020] Secondly, the rotating unit can move along the extension direction of the track, and the elastic stretching unit can rotate relative to the track along the second trajectory. When the operator wears the support hanger, the extension direction of the track, the second trajectory and the extension direction of the telescopic component can be linked simultaneously or separately, so that operators of different heights can rotate at will and can move in large and small adjustments. Under the above circumstances, the pressure of the lead apron can be reduced.

[0021] In addition, the support hanger can be moved up and down with the second tensioning member to adjust the height of the supported lead apron to suit the operator's height. Moreover, the telescopic member generates a basically constant tension as its free end extends or contracts, which can avoid excessive tensile force on the lead apron due to different stretching heights, thus avoiding excessive tension on the operator and interfering with their operation.

[0022] By setting up a protection unit, the extension length of the telescopic component is limited to a certain length, which can prevent the operator from falling.

[0023] Therefore, when the operator wears a lead apron, the telescopic component is pulled downwards to allow the second traction component to move down, adjusting the height to accommodate the operator's height and lower-level operations such as bending over, and reducing the pressure of the lead apron on the operator. A rotating unit allows the support hanger to rotate, enabling the operator to turn around. For example, when the operator moves to the operating table, the first traction component pulls the pulley along the track to move to the surgical position. When turning is needed, the second traction component drives the telescopic component to rotate through the rotating unit, allowing the operator to turn 360 degrees without restriction. Furthermore, the second traction component and the support hanger are suspended below the first traction component, eliminating the need for other support components around the operator, thus avoiding interference with turning operations and allowing movement around the operator, facilitating coordination among operators. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1A-1BThese are schematic diagrams of the traction device according to two embodiments of the present invention;

[0026] Figure 2 This is a schematic diagram of the traction device according to another embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the pulley structure in the guide rail assembly of the traction device according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the slide rail structure in the guide rail assembly of the traction device according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the pulling device supporting the clothes hanger according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the protective unit of the traction device according to an embodiment of the present invention in a relaxed state;

[0031] Figure 7 This is a schematic diagram of the protective unit of the traction device according to another embodiment of the present invention in a relaxed state;

[0032] Figure 8 This is a cross-sectional view of the protective unit of the traction device according to another embodiment of the present invention in a relaxed state;

[0033] Figure 9 This is a partial structural diagram of the protection unit of the traction device according to an embodiment of the present invention in a tensioned state;

[0034] Figure 10 This is a schematic diagram of the protective unit of the traction device according to another embodiment of the present invention in a tensioned state;

[0035] Figure 11 This is a cross-sectional view of the protective unit of the traction device according to another embodiment of the present invention in a tensioned state;

[0036] Figure 12A This is a schematic diagram of the structure of the elastic tensioning unit of the traction device according to an embodiment of the present invention;

[0037] Figure 12B yes Figure 12A An exploded view of the elastic tension element shown.

[0038] Figure 13 This is a schematic diagram of the structure of the rotating unit of the traction device according to an embodiment of the present invention;

[0039] Figure 14A and Figure 14BThese are the deformation areas of the free end of the telescopic component of the traction device in different elongation states, as described in this embodiment of the invention.

[0040] Component designation

[0041] 100: Traction device;

[0042] 1: Guide rail assembly; 11: Slide rail; 111: Track; 12: Pulley; 121: Roller; 122: Support; 13: Hanging ring on pulley; 101: Support unit;

[0043] 2: Rotating unit; 21: First rotating part; 22: Second rotating part; 23: U-shaped ring; 24: Fixed pin; 25: Shaft of rotating ring;

[0044] 3: Telescopic component, 31: Rotating component, 32: Free end, 33: Elastic tension unit, W: Second trajectory, M: First trajectory;

[0045] 4: Outer shell; 41: Upper shell; 42: Perforation in the upper shell; 43: Elastic shell; 44: Lower shell;

[0046] 51: First traction component; 52: Second traction component; 53: Spring buckle; 54: Fixing component; 55: Fixing shaft;

[0047] 6: Protection Unit;

[0048] 7: Support hanger, 71: Support frame, 72: Shoulder support, 73: Shoulder pad, 74: Hanging ring of support hanger. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0050] The terms "coupled" and "connected" as used in this application include both direct and indirect connections. The terms "first trajectory" and "second trajectory" as used in this application include trajectories along the direction of the arrows in the figure and trajectories along the opposite direction of the arrows.

[0051] The following is a reference appendix. Figure 1A-14 describes a traction device 100 according to an embodiment of the present invention, the traction device 100 being used to support radiation protection clothing such as lead aprons worn by an operator, so as to reduce the weight of the operator wearing radiation protection clothing, thereby reducing the risk and incidence of musculoskeletal damage caused by wearing heavy radiation protection clothing, and also enabling the operator to have normal degrees of freedom and improve work efficiency.

[0052] like Figure 1A-1B As shown, in one embodiment of the present invention, the traction device 100 includes a support unit 101 and an elastic tension unit 33. The elastic tension unit 33 includes a rotating member 31 and a telescopic member 3. The rotating member 31 is connected to the support unit 101 and can rotate along a first trajectory M. The telescopic member 3 has a stress-maintaining portion L. The telescopic member 3 is connected to the rotating member 31 and can extend or contract as the rotating member 31 rotates along the first trajectory M, generating a substantially constant tension force via the stress-maintaining portion L. Multiple elastic tension units 33 can be used in series or in parallel, connecting one or more support units 101 to increase the service life of the elastic tension units 33.

[0053] like Figure 12A , Figures 14A-14B As shown, optionally, the telescopic member 3 is formed by rolling a metal plate around the rotating member 31, the stress maintaining part L is the bent part of the metal plate that is about to detach from the rotating member 31, and the deformation area of ​​the stress maintaining part L that generates stress is basically fixed.

[0054] In one embodiment, the support unit 101 includes: a guide rail assembly 1 with a track; a rotating unit 2 coupled to the guide rail assembly 1, the rotating unit 2 being movable along the extension direction of the track and capable of causing the elastic stretching unit 33 to rotate relative to the track along a second trajectory W; and a support hanger 7 coupled to the telescopic member 3, the support hanger 7 being used to suspend the lead apron, which is worn by the operator, so that the operator can move simultaneously or independently along the extension direction of the track, the second trajectory W, and the telescopic direction of the telescopic member 3 when wearing the support hanger 7. For example, the operator can move along the extension direction of the track when wearing the support hanger 7, move along the second trajectory W when turning around, move horizontally away from the original position when walking, or move from standing to squatting or from squatting to standing in place, and the telescopic member 3 extends or contracts as the rotating member 31 rotates along the first trajectory M.

[0055] In another embodiment of the present invention, the pulling device 100 includes a guide rail assembly 1, a first pulling member 51, a rotating unit 2, an elastic tensioning unit 33, a support hanger 7, and a second pulling member 52. The rotating unit 2 may also be directly connected to the guide rail assembly 1 without going through the first pulling member 51, and the support hanger 7 may also be directly connected to the telescopic member 3 without going through the second pulling member 52.

[0056] The upper end of the first pulling member 51 is connected to the guide rail assembly 1. The first pulling member 51 can move along the extension direction of the track 111 of the guide rail assembly 1. Specifically, the guide rail assembly 1 can be fixed to the ceiling, or the guide rail assembly 1 can also be fixed in the operating room by other structures. The first pulling member 51 is suspended by the guide rail assembly 1 and can move along the track 111 of the guide rail assembly 1, so that the operator can move freely even when wearing a lead apron.

[0057] Combination Figures 1A-4 As shown, the guide rail assembly 1 may include a slide rail 11 and a pulley 12. The slide rail 11 may be fixedly mounted on the ceiling. A track 111 is formed inside the slide rail 11 to cooperate with the pulley 12. The pulley 12 is slidably disposed within the track 111. Figure 3 In the example shown, the pulley 12 includes a roller 121 and a support member 122. The roller 121 can be one or more, which is not limited in this invention. The roller 121 is rotatably disposed on the support member 122 and can slide along the track 111. The support member 122 is provided with a lifting ring 13, and the upper end of the first traction member 51 can be fixedly connected to the lifting ring 13.

[0058] The rotating unit 2 is connected to the lower end of the first traction member 51, and the supporting hanger 7 is connected to the lower end of the second traction member 52. The supporting hanger 7 is used to suspend the lead apron, which is worn by the operator. Thus, the guide rail assembly 1, the first traction member 51, the rotating unit 2, the telescopic member 3, the second traction member 52, and the supporting hanger 7 are arranged sequentially in the vertical direction. The lead apron is supported on the supporting hanger 7, eliminating the need for a support structure behind the operator. This allows for easy movement and standing around the operator without affecting examination and surgical procedures, thus facilitating operator movement and improving coordination between operators. It should be noted that the vertical direction here refers to... Figure 1B The up and down directions are shown.

[0059] Specifically, the rotating unit 2 is connected to the first tensioning member 51 and the rotating member 30 respectively. The rotating unit 2 is configured to allow the elastic tensioning unit 33 to move relative to the track 111 or the first tensioning member 51 along... Figure 9 The second trajectory W shown in the figure rotates. The telescopic member 3 is connected to the upper end of the second pulling member 52 so that the second pulling member 52 pulls the telescopic member 3 to extend and retract, thereby making the second pulling member 52 movable in the vertical direction. The support hanger 7 is connected to the lower end of the second pulling member 52.

[0060] In this way, the support hanger 7 can move up and down with the second pulling member 52 to adjust the height of the supported lead apron to suit the operator's height. Moreover, the support hanger 7 is connected to the first pulling member 51 through the second pulling member 52 and the telescopic member 3. The telescopic member 3 can achieve a constant tension within a certain length and avoid large tension on the lead apron due to different stretching heights, so as to avoid large tension on the operator and interfere with the operator's operation. At the same time, the support hanger 7 can be connected to the telescopic member 3, and can also move and rotate along the track 111 of the guide rail assembly 1.

[0061] Therefore, when the operator (e.g., the operator) is wearing a lead apron, the telescopic component 3 is pulled downwards to allow the second traction component 52 to move downwards to adjust the height, adapting to the operator's height and lower-level operations such as bending over, and reducing the pressure of the lead apron on the operator. By setting the rotating unit 2, the supporting hanger 7 can be rotated, allowing the operator to perform operations such as turning around. For example, when the operator moves to the operating table, the first traction component 51 pulls the pulley 12 to rotate along the track 111 to move to the surgical position. When turning around is required, the second traction component 52 drives the telescopic component 3 to rotate through the rotating unit 2, allowing the operator to achieve 360-degree unrestricted turning. Moreover, the second traction component 52 and the supporting hanger 7 are suspended below the first traction component 51, eliminating the need for other supporting components around the operator, avoiding interference with the operator's turning operations, and allowing the operator to move around, which is beneficial for coordination among operators.

[0062] Optionally, the first pulling member 51 and the second pulling member 52 can be a suspension rope. For example, both the first pulling member 51 and the second pulling member 52 can be steel wire ropes. Steel wire ropes have high structural strength and can bear greater tensile force.

[0063] In some embodiments of the present invention, such as Figures 6-11 as well as Figure 13 As shown, the rotating unit 2 may include a first rotating part 21 and a second rotating part 22, which are rotatably connected. The first rotating part 21 is connected to the lower end of the first pulling member 51, and the second rotating part 22 is connected to the rotating member 31. The rotating member 31 can rotate relative to the first pulling member 51 along the first trajectory M. That is, the rotating unit 2 may include a first rotating part 21 and a second rotating part 22 that can rotate relative to each other. The first rotating part 21 is fixedly or movably connected to the lower end of the first pulling member 51, and the second rotating part 22 is located below the first rotating part 21 and connected to the elastic tensioning unit 33. The first rotating part 21 can rotate relative to the second rotating part 22, which also allows the elastic tensioning unit 33 to rotate, that is, the elastic tensioning unit 33 can rotate along the second trajectory W, thereby allowing the support hanger 7 to rotate to enable the operator to turn around and move.

[0064] In some specific examples of the present invention, the rotating unit 2 can be formed as a rotating ring, so as to realize the rotational movement of the telescopic member 3 and have a simple structure and convenient assembly. Specifically, such as Figure 13 As shown, the first rotating part 21 can be formed as an O-ring, and the second rotating part 22 can be formed as a shackle. In this way, the first pulling member 51 can be fixedly connected to the O-ring, and the rotating member 31 can be detachably connected and fixed to the second rotating part 22, so as to facilitate the assembly and connection of the elastic tension unit 33 and the rotating unit 2. Furthermore, the first pulling member 51 can pass through the O-ring and be fixedly or movably connected to the O-ring by the fixing member 54.

[0065] In some embodiments of the present invention, such as Figure 14A and 14B As shown, the telescopic member 3 can be formed by rolling a metal plate around the rotating member 31. When the metal plate is stretched (rolled), as... Figure 14A and 14B As shown, regardless of the length of the free end 32, the deformation area that generates stress (i.e., the bent portion of the metal plate that is about to detach from the rotating member 31) is fixed. Therefore, the telescopic member 3 can achieve a constant tension within a certain length. The telescopic member 3 can be sleeved on the lower end of the rotating unit 2, and the free end 32 of the telescopic member 3 can be fixedly connected to the second pulling member 52. When the telescopic member 3 is stretched, the second pulling member 52 and the supporting hanger 7 can move in the vertical direction.

[0066] Optionally, such as Figures 11-13 As shown, the telescopic component 3 can be mounted on the rotating component 31. The rotating component 31 is connected to the rotating ring (i.e., the rotating unit 2) and can rotate around the axis 25 of the rotating ring. The height of the rotating ring remains unchanged. When the lead apron is pulled down, the telescopic component 3 is stretched. The length pulled down is the stretching length of the telescopic component 3, so that the pulling force on the lead apron remains unchanged for people of different heights.

[0067] In some embodiments of the present invention, such as Figure 2 as well as Figures 6-11 The pulling device 100 shown also includes a protective unit 6. The upper end of the protective unit 6 is connected to at least one of the rotating unit 2 or the telescopic member 3 to fix the connection position of the upper end of the protective unit 6. That is, the protective unit 6 can be fixedly connected to the rotating unit 2, or the protective unit 6 can be fixedly connected to the telescopic member 3, or the protective unit 6 can be connected to both the rotating unit 2 and the telescopic member 3 at the same time, thereby fixing the position of the upper end of the protective unit 6 and reducing the length of the protective unit 6, thus saving costs. It is understood that the upper end of the protective unit 6 can also be fixed to the first pulling member 51 or the guide rail assembly 1, or the upper end of the protective unit 6 can be directly fixedly connected to the ceiling. As long as the upper end of the protective unit 6 is fixed, the present invention does not limit this.

[0068] The lower end of the protection unit 6 is connected to the second tension member 52 and is movable with the second tension member 52 to limit the extension length of the telescopic member 3. Figures 6-8 The diagram shown illustrates the protection unit 6 in a relaxed state. Figures 9-11 The diagram shows the protective unit 6 in a taut state. Thus, as the second tension member 52 is stretched, the lower end of the protective unit 6 moves along with it. Since the protective unit 6 has a certain length, the stretching length of the second tension member 52 can be limited to prevent overstretching of the telescopic member 3. When the second tension member 52 is pulled down to the limit of the telescopic member 3's length, the protective unit 6 can be fully taut, preventing the second tension member 52 from continuing to pull down. Especially when the operator falls, overstretching may occur; limiting overstretching also indirectly prevents the operator from falling directly to the ground.

[0069] In some embodiments of the present invention, a housing 4 is also included, which is at least fitted over the outside of the rotating unit 2, the rotating member 31, and the telescopic member 3. That is, the housing 4 at least covers the rotating unit 2, the rotating member 31, and the telescopic member 3. In this way, the housing 4 can protect the rotating unit 2 and the telescopic member 3, so that the rotating unit 2, the rotating member 31, and the telescopic member 3 are not exposed to the outside, making the overall structure safer and more aesthetically pleasing.

[0070] In some specific examples of the present invention, the outer shell 4 is also sleeved on the outside of a portion of the second pulling member 52, and the upper end of the second pulling member 52 extends into the outer shell 4 and connects with the telescopic member 3. For example... Figures 7-8 as well as Figures 10-11 As shown, the outer shell 4 may include an upper shell 41, an elastic shell 43 and a lower shell 44. The two ends of the elastic shell 43 are connected to the upper shell 41 and the lower shell 44 respectively and are retractable in the vertical direction.

[0071] Therefore, the elastic shell 43 has a certain elasticity and can extend and retract in the vertical direction. The upper end of the elastic shell 43 is connected to the upper shell 41, and the lower end of the elastic shell 43 is connected to the lower shell 44. The upper shell 41, the elastic shell 43, and the lower shell 44 together define a hollow structure. The rotating unit 2, the rotating component 31, and the telescopic component 3 are located within the hollow structure. When the second pulling component 52 is pulled down, the elastic shell 43 is stretched downward, so that the telescopic component 3 can always remain within the outer shell 4 during the extension and retraction process, thereby better protecting the telescopic component 3. Moreover, the upper shell 41 is fixed to the rotating unit 2 and can rotate relative to the first pulling component 51, and the lower shell 44 is fixedly connected to the second pulling component 52, thereby achieving the support and fixation of the outer shell 4, and also enabling the rotation of the telescopic component 3.

[0072] The support hanger 7 is used to support the lead apron, as in some embodiments of the present invention, such as... Figure 5As shown, the support hanger 7 may include a support frame 71, two shoulder support members 72, and shoulder pads 73. The support frame 71 is connected and fixed to the lower end of the second tension member 52. The two shoulder support members 72 are respectively provided on both ends of the support frame 71 to support the shoulders of the lead apron. The shoulder pads 73 are provided on the shoulder support members 72. Specifically, the support frame 71 is formed in a general hanger shape. The upper part of the support frame 71 is fixedly connected to the second tension member 52. Optionally, the upper end of the support frame 71 may have a hanging ring to facilitate fixing to the second tension member 52. The lower end of the support frame 71 includes two supports extending away from each other to support the shoulders of the lead apron. Two shoulder supports 72 are respectively provided on the two supports. The shoulder supports 72 can be formed into an arc shape to match the shoulders of the lead apron. Shoulder pads 73 are provided on the shoulder supports 72. In this way, the lead apron is supported on the support frame 7 by the shoulder support pads. The shoulder pads 73 covering the shoulder supports 72 can make the operator wearing the lead apron more comfortable and can also prevent damage to the lead apron.

[0073] Optionally, each shoulder support 72 may include multiple arc-shaped plates arranged side-by-side and spaced apart. It should be noted that "multiple" here refers to two or more, for example... Figure 5 As shown, each shoulder support 72 may include three arc-shaped plates arranged side by side with spacing between them. The shoulder pad 73 covers the three arc-shaped plates, thereby effectively reducing the weight of the shoulder support 72 and improving comfort.

[0074] The pulling device 100 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0075] Combination Figures 1A-12B As shown, the pulling device 100 according to an embodiment of the present invention includes a guide rail assembly 1, a first pulling member 51, a rotating unit 2, a telescopic member 3, a rotating member 31, a housing 4, a second pulling member 52, a support hanger 7, and a protection unit 6.

[0076] like Figure 1A and Figure 2 As shown, the first pulling member 51 is connected to the lower part of the guide rail assembly 1 by a lifting ring. The first pulling member 51 can move along the track 111 of the guide rail assembly 1. For example, the guide rail assembly 1 may be provided with a transverse track and a longitudinal track, so that the first pulling member 51 can move in the transverse and longitudinal directions.

[0077] The rotating unit 2 includes a first rotating part 21 and a second rotating part 22 that are rotatable from each other. The first rotating part 21 is formed as an O-ring, and the second rotating part 22 is formed as a shackle. The shackle includes a fixing pin 24 and a U-ring 23. The fixing pin 24 is connected to the open end of the U-ring 23 to form a closed ring. The lower end of the first pulling member 51 passes through the first rotating part 21 and is fixed by the fixing member 54. The telescopic member 3 is wrapped around the rotating member 31. The rotating member 31 has a hollow cavity and is sleeved on the fixing pin 24. The free end 32 of the telescopic member 3 is fixedly connected to the upper end of the second pulling member 52 by the fixing member 54.

[0078] The outer shell 4 is fitted over the rotating unit 2 and the elastic tension unit 33. The outer shell 4 includes an upper shell 41, an elastic shell 43 and a lower shell 44. The upper shell 41 is provided with a through hole 42. The protective unit 6 is located outside the outer shell 4. The fixing pin 24 passes through the through hole 42 on the upper shell 41 and is connected to the U-shaped ring. This not only makes it convenient for the rotating part 31 to be wound around the lower part of the rotating unit 2, but also allows the upper shell 41 to be fixedly connected to the rotating unit 2. The upper end of the protective unit 6 can be fixedly connected to the fixing pin 24, thereby making the connection of the protective unit 6, the outer shell 4, the rotating unit 2 and the rotating part 31 more compact and the structure more stable.

[0079] The lower housing 44 is also provided with a through hole, and the second pulling member 52 is provided with a fixing member, which can be a fixing clamp. The pulling device 100 also includes a fixing shaft 55, which passes through the through hole of the lower housing 44 and is fixedly connected to the fixing member on the second pulling member 52 to realize the connection between the lower housing 44 and the second pulling member 52. The lower end of the protection unit 6 can be connected to the fixing shaft 55. The lower end of the second pulling member 52 can be provided with a spring buckle 53, and a hanging ring 74 can be formed on the support hanger 7. The spring buckle 53 is fixed to the lower end of the second pulling member 52 and hung on the hanging ring 74 of the support hanger 7.

[0080] According to the present invention, the lower end of the first pulling member 51 of the pulling device 100 is connected to the first rotating part 21, the telescopic member 3 is sleeved on the second rotating part 22, the second pulling member 52 is connected to the free end 32 of the telescopic member 3, the outer shell 4 is fixedly connected to the second rotating part 22 and covers the rotating part, the telescopic member 3 and part of the second pulling member 52, so that the pulling device 100 is arranged in the vertical direction as a whole, the support hanger 7 is connected to the lower end of the second pulling member 52, and the lead apron can move in the vertical direction through the second pulling member 52, and no other structure needs to be set around the lead apron, thereby avoiding affecting the operator's movement.

[0081] By incorporating the telescopic component 3, the tension of the second pulling component 52 can be kept constant. When the lead apron is pulled down, causing the telescopic component 3 to extend, the pulling length is equal to the extension length of the telescopic component 3, ensuring that the tension on the lead apron remains constant for people of different heights. By incorporating the rotating unit 2, the second pulling component 52 and the apron hanger can rotate along the second trajectory, allowing the operator to turn around. By incorporating the protective unit 6, overstretching of the telescopic component 3 can be prevented, especially in the event of a fall, as overstretching may occur. Limiting overstretching also indirectly prevents the doctor from falling directly to the ground.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A traction device, characterized in that, The traction device includes a support unit and an elastic tension unit, wherein the elastic tension unit includes: A rotating component, which is connected to the support unit and can rotate along a first trajectory; A telescopic member having a stress-maintaining part is connected to the rotating member, and the telescopic member can extend or contract as the rotating member rotates along the first trajectory, and generates a substantially constant tensile force through the stress-maintaining part; the telescopic member is formed by rolling a metal plate around the rotating member, the stress-maintaining part is the bent part of the metal plate that is about to detach from the rotating member, and the deformation area of ​​the stress-maintaining part that generates stress is substantially fixed. The support unit includes: Guide rail assembly, which has a track; A rotating unit, coupled to the guide rail assembly, is movable along the extension direction of the rail and allows the elastic tension unit to rotate relative to the rail along a second trajectory; and A support hanger is provided, which is coupled to the telescopic member and is used to suspend a lead apron. The lead apron is worn by the operator so that the operator can move in conjunction with the extension direction of the track, the second track, and the extension direction of the telescopic member when wearing the lead apron.

2. The traction device according to claim 1, characterized in that, The rotating unit includes a first rotating part and a second rotating part, which are rotatably connected, and the rotating component is connected to the second rotating part.

3. The traction device according to claim 2, characterized in that, The rotating unit is connected to the guide rail assembly via a first tension member, and the supporting hanger is connected to the telescopic member via a second tension member.

4. The traction device according to claim 3, characterized in that, The first rotating part is connected to the first pulling member. The rotating member is sleeved on the second rotating part and can rotate around the second rotating part along the first trajectory. One end of the telescopic member is connected to the rotating member, and the other end is a free end. The free end is connected to the second pulling member. The free end extends or contracts as the rotating member rotates around the second rotating part along the first trajectory.

5. The traction device according to claim 3, characterized in that, The traction device further includes a protection unit, the upper end of which is connected to at least one of the rotating unit or the telescopic member to fix the upper end connection position of the protection unit, and the lower end of the protection unit is connected to the second traction member and can move within a preset range with the second traction member to limit the extension length of the telescopic member.

6. The traction device according to claim 2, characterized in that, The first rotating part is formed as an O-ring, and the second rotating part is formed as a shackle.

7. The traction device according to claim 3, characterized in that, The traction device also includes a housing, which is fitted over at least the outside of the rotating unit and the telescopic member.

8. The traction device according to claim 7, characterized in that, The outer shell includes an upper shell, an elastic shell, and a lower shell. The two ends of the elastic shell are connected to the upper shell and the lower shell respectively and can extend and retract along the extension and retraction direction of the telescopic member. The upper shell is fixed to the rotating unit and can rotate relative to the first traction member. The lower shell is fixedly connected to the second traction member.

9. The traction device according to claim 3, characterized in that, The support hanger includes a support frame, two shoulder support members, and shoulder pads. The support frame is connected and fixed to the lower end of the second pulling member. The two shoulder support members are respectively disposed on both ends of the support frame to support the shoulders of the lead apron. Each shoulder support member includes multiple arc-shaped plates arranged side by side and spaced apart. The shoulder pads are disposed on the shoulder support members.

10. The traction device according to claim 3, characterized in that, Fixing members are provided between the first pulling member and the first rotating part, between the second pulling member and the second rotating part, and between the second pulling member and the supporting hanger to strengthen the connection.

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