An anti-slip arm support for blood donation

Abstract

The present invention discloses an anti-slip arm support for blood donation, which belongs to the technical field of anti-slip equipment for blood donation arms, and includes a forearm lifting device, an upper arm lifting device, and an external device fixing structure, wherein the forearm lifting device includes a hand grip adjustment structure, an anti-slip limit structure, and a hypothermia warning device, the upper arm lifting device includes an intermediate lifting clamp and an automatic retraction clamp, and the external device fixing structure includes a device lifting plate, an armrest clamping plate, and a lifting angle self-limiting structure. The present invention is required to ensure that the device fixes the arm, and to avoid excessive pressure on the blood vessels, which leads to a decrease in the bleeding rate. It is also required to monitor the body of the person whose blood is being collected, and reduce the probability of accidents during the blood donation process. Therefore, an anti-slip arm support for blood donation is provided, which, through a dot matrix arrangement, ensures that the device provides anti-slip support for the arm and avoids excessive pressure on the veins, and uses an electronic temperature measuring device to monitor the body temperature at any time, and reduce the probability of accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-skid equipment for blood donation arms, and in particular relates to an anti-skid arm supporter for blood donation. Background Art

[0002] During blood donation, arm stability and comfort are key factors affecting blood collection efficiency and the donor experience. Traditional blood donation arm supports are typically simple in structure and provide only basic support. Existing devices often use straps or pillows to secure the arm. While overtightening the straps can effectively prevent arm slippage, it can reduce the diameter of the veins and reduce blood flow. Furthermore, insufficient human supervision during the blood donation process can lead to hypothermia and organ failure if excessive blood is drawn. Summary of the Invention

[0003] In view of the above situation, it is necessary to ensure that the equipment fixes the arm and avoids excessive compression of blood vessels causing a decrease in bleeding rate. It is also necessary to monitor the body of the person whose blood is being collected to reduce the probability of accidents during the blood donation process. The present invention provides an anti-slip arm support for blood donation. Through a dot matrix arrangement, it not only ensures the anti-slip support of the equipment to the arm, but also avoids excessive compression of the veins causing a slowdown in blood flow. Electronic temperature measuring equipment is used to monitor body temperature at any time to reduce the probability of accidents for the person whose blood is being collected.

[0004] The technical solution adopted by the present invention is as follows: The present invention provides an anti-slip arm support for blood donation, including a forearm lifting device, an upper arm lifting device and an external equipment fixing structure, the external equipment fixing structure is fixed on the handle of the chair, the upper arm lifting device slides on the external equipment fixing structure, and the forearm lifting device is hinged to the upper arm lifting device; the forearm lifting device includes a hand gripping adjustment structure, an anti-slip limiting structure, and a hypothermia warning device, the anti-slip limiting structure is hinged to the upper arm lifting device, the hand gripping adjustment structure is engaged and slidably connected with the anti-slip limiting structure, and the hypothermia warning device is engaged and installed on the anti-slip limiting structure On; the upper arm lifting device includes an intermediate lifting clamp and an automatic retracting clamp, the intermediate lifting clamp is hinged with the anti-slip limiting structure, the automatic retracting clamp is engaged and rotatably connected with the intermediate lifting clamp, and the intermediate lifting clamp is engaged and slid on the external equipment fixing structure; the external equipment fixing structure includes an equipment lifting plate, an armrest clamping plate and a lifting angle self-limiting structure, the equipment lifting plate is placed on the armrest, the armrest clamping plate is engaged and slid in the equipment lifting plate, and the armrest clamping plate is close to the side wall of the armrest, and the pressure and friction of the armrest clamping plate are used to fix the equipment on the armrest, and the lifting angle self-limiting structure is fixedly installed on the equipment lifting plate.

[0005] Furthermore, the hand grip adjustment structure includes a gripping ball, a spring rope, an adjustment limit base plate, and a tightening limiter, the tightening limiter is engaged and slidably connected with the anti-slip limit structure, the adjustment limit base plate is fixedly installed on the anti-slip limit structure, the spring rope is fixedly installed on the tightening limiter, and the gripping ball is fixedly installed on the spring rope; the tightening limiter includes a rectangular outer shell, a rectangular inner shell, a triangular prism limit tooth, and a sliding limit column, the adjustment limit base plate is provided with a slide groove, the rectangular outer shell slides along the slide groove on the adjustment limit base plate, and a spring is provided between the rectangular outer shell and the adjustment limit base plate, the rectangular inner shell is fixedly installed on the rectangular outer shell, the triangular prism limit tooth is engaged and slidably set in the rectangular outer shell, and a spring is provided between the triangular prism limit tooth and the rectangular outer shell, the sliding limit column is fixedly set on the anti-slip limit structure, and the anti-slip limit structure is provided with a protrusion of a triangular prism structure.

[0006] Furthermore, the triangular prism on the sliding limit column is set to a right-angled triangular prism structure. Similarly, the triangular prism on the triangular prism limiting tooth is also set to a right-angled triangular prism structure. When the rectangular shell is pulled, the triangular prism limiting tooth is horizontally displaced, and the triangular prism on the sliding limit column is disengaged from the triangular prism limiting tooth. The anti-slip limiting structure loses the limit of the triangular prism limiting tooth and is released instantly, clamping the human arm.

[0007] Furthermore, the anti-slip limiting structure includes an arm limiting ring, a limiting groove tube, an arm end arc plate, and a distal arm end arc plate. The arm limiting ring is hinged to the upper arm lifting device, the limiting groove tube is snap-fitted and installed on the arm limiting ring, the arm end arc plate is snap-fitted and slidably installed in the limiting groove tube, the distal arm end arc plate is snap-fitted and slidably installed in the limiting groove tube, and the arm end arc plate and the distal arm end arc plate are fixedly connected by a bracket.

[0008] Furthermore, rubber material is used between the arm end arc plate and the distal arm end arc plate, the brackets between the arm end arc plate and the distal arm end arc plate are all made of rubber material, and the limiting groove tube and the distal arm end arc plate are connected by a spring.

[0009] Furthermore, the hypothermia warning device includes a display light, a temperature display meter, and a temperature detection gun head. The display light is fixedly mounted on the arc plate at the distal arm end, the temperature detection gun head is snap-fitted and slidably mounted on the arc plate at the arm end, and the temperature display meter is fixedly mounted on the arc plate at the distal arm end.

[0010] Furthermore, the body temperature detection gun head is provided with a temperature sensor, a central controller, a data transmission line, and a battery. The display light is provided with a power-connected metal sheet. The display light and the body temperature detection gun head are connected by a spring. The top of the body temperature detection gun head is provided with a sponge cushion. The function of the cushion is to prevent the temperature measuring gun from directly contacting the human body and causing inaccurate temperature measurement. The data measured by the gun head is transmitted to the central controller and then converted into a data signal, which is then transmitted to the body temperature display meter. When the body temperature detection gun head contacts the human body and slides down, the bottom of the body temperature detection gun head contacts the top of the display light, and electrical energy is transmitted to the display light to make the display light light up, proving that the equipment is in full contact with the human body and pressed to ensure that the arm is fixed.

[0011] Furthermore, the adjustment limit bottom plate is provided with a hole for convenient observation of the display light and the temperature display meter.

[0012] Furthermore, the lifting angle self-limiting structure includes an inclined groove limiting plate, a limiting rack, a pull rod, and a rack slide. The inclined groove limiting plate is fixedly arranged on the equipment lifting plate, and an inclined groove is provided on the inclined groove limiting plate. The rack slide is fixedly arranged on the inclined groove limiting plate. The limiting rack is slidably installed in the rack slide, and a spring is provided between the limiting rack and the rack slide. The pull rod is fixedly installed on the limiting rack, and a bracket 1 is provided on the side wall of the middle lifting clamp. The bracket 1 Sliding along the inclined groove in the inclined groove limit plate, the bracket 1 is in contact with the limit rack, the upper arm lifting device slides along the inclined groove on the inclined groove limit plate, and the bracket 1 on the middle lifting clamp slides with the inclined groove on the inclined groove limit plate. Each time it passes through the limit rack, the limit rack will slide down. When the position is fixed, the limit rack will limit the upper arm lifting device to prevent it from slipping. Only when the pull rod slides can the upper arm lifting device not be restricted in sliding direction by the limit rack.

[0013] Furthermore, in order to ensure the stability of the upper arm lifting device, inclined groove limit plates can be set on both sides of the equipment lifting plate.

[0014] Furthermore, a torsion spring is provided on the engaging rotation point where the intermediate lifting clamp is connected to the automatic retracting clamp, and the automatic retracting clamp is assembled from multiple groups of brackets along the same direction.

[0015] Furthermore, a slide groove is provided on the equipment lifting plate, which facilitates the anti-slip limiting structure and the intermediate lifting clamp to slide along a fixed straight track on the equipment lifting plate.

[0016] Furthermore, the gripping ball can be replaced with gloves to facilitate holding a mobile phone or other items.

[0017] Furthermore, a telescopic sleeve structure that is engaged and rotatably connected is provided on the bottom wall of the middle lifting clamp, and the telescopic sleeve structure slides in the slot on the equipment lifting plate.

[0018] This solution provides an anti-slip arm support for blood donation, which has the following beneficial effects:

[0019] (1) By utilizing the displacement generated when the spring rope is pulled, the spatial position between the triangular prism limit tooth and the sliding limit column is changed, so that the pressed arc plate at the arm end is released, and the arc plate at the arm end slides along the limit groove tube, realizing the function of automatically clamping the arm and limiting the arm by the stretching spring rope device;

[0020] (2) When the arm is clamped by the curved plate at the arm end, multiple sets of temperature detection gun heads are added to the surface of the curved plate at the arm end. On the one hand, the friction resistance between the equipment and the human body is increased by the gun heads. On the other hand, the electronic thermometer inside the temperature detection gun heads monitors the changes in human body temperature in real time to ensure the personal safety of the person whose blood is being drawn;

[0021] (3) The bracket 1 on the middle lifting clamp, when the middle lifting clamp slides, slides in contact with the limit rack, so that the upper arm lifting device is tilted and raised and fixed, so that the arm can maintain a fixed posture during blood collection and is not easy to slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front perspective view of an anti-slip arm support for blood donation provided by the present invention;

[0023] Figure 2 A three-dimensional cross-sectional view of an anti-slip arm support for blood donation provided by the present invention;

[0024] Figure 3 An exploded view of an anti-slip arm support for blood donation provided by the present invention;

[0025] Figure 4 is a three-dimensional diagram of a forearm lifting device;

[0026] Figure 5 It is a three-dimensional diagram of the anti-slip limiting structure;

[0027] Figure 6 This is an exploded view of the tightening limiter in use;

[0028] Figure 7 It is a structural diagram of the anti-slip limiting structure;

[0029] Figure 8 This is a structural diagram of the lifting angle self-limiting structure on the equipment lifting plate;

[0030] Figure 9 This is a rear stereoscopic view of an anti-slip arm support for blood donation provided by the present invention.

[0031] Among them, 1. Forearm lifting device, 2. Upper arm lifting device, 3. External equipment fixing structure, 4. Hand grip adjustment structure, 5. Anti-slip limit structure, 6. Hypothermia warning device, 7. Middle lifting clamp, 8. Automatic retraction clamp, 9. Equipment lifting plate, 10. Armrest clamping plate, 11. Lifting angle self-limiting structure, 12. Grasping ball, 13. Spring rope, 14. Adjust the limit bottom plate, 15. Tighten the limiter, 16. , rectangular outer shell, 17, rectangular inner shell, 18, triangular prism limit teeth, 19, sliding limit column, 20, arm limit ring, 21, limit groove tube, 22, arc plate at the arm end, 23, arc plate at the far arm end, 24, display light, 25, body temperature display meter, 26, body temperature detection gun head, 27, inclined groove limit plate, 28, limit rack, 29, pull rod, 30, rack slide groove, 31, bracket one, 32, sleeve structure.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0035] like Figures 1-9As shown, the present invention provides an anti-slip arm support for blood donation, comprising a forearm lifting device 1, an upper arm lifting device 2 and an external device fixing structure 3, the external device fixing structure 3 is fixed on the handle of the chair, the upper arm lifting device 2 slides on the external device fixing structure 3, and the forearm lifting device 1 is hinged to the upper arm lifting device 2; the forearm lifting device 1 comprises a hand gripping adjustment structure 4, an anti-slip limiting structure 5, and a hypothermia warning device 6, the anti-slip limiting structure 5 is hinged to the upper arm lifting device 2, the hand gripping adjustment structure 4 is engaged and slidably connected with the anti-slip limiting structure 5, and the hypothermia warning device 6 is engaged and installed on the anti-slip limiting structure 5; the upper arm lifting device 2 It includes an intermediate lifting clamp 7 and an automatic retracting clamp 8. The intermediate lifting clamp 7 is hinged to the anti-slip limiting structure 5. The automatic retracting clamp 8 is engaged and rotatably connected to the intermediate lifting clamp 7, and the intermediate lifting clamp 7 is engaged and slid on the external equipment fixing structure 3; the external equipment fixing structure 3 includes an equipment lifting plate 9, an armrest clamping plate 10 and a lifting angle self-limiting structure 11. The equipment lifting plate 9 is placed on the armrest, the armrest clamping plate 10 is engaged and slid in the equipment lifting plate 9, and the armrest clamping plate 10 is close to the side wall of the armrest. The pressure and friction of the armrest clamping plate 10 are used to fix the equipment on the armrest, and the lifting angle self-limiting structure 11 is fixedly installed on the equipment lifting plate 9.

[0036] The hand grip adjustment structure 4 includes a gripping ball 12, a spring rope 13, an adjustment limit base 14, and a tightening limiter 15. The tightening limiter 15 is connected to the anti-slip limit structure 5 by snapping and sliding. The adjustment limit base 14 is fixedly mounted on the anti-slip limit structure 5, the spring rope 13 is fixedly mounted on the tightening limiter 15, and the gripping ball 12 is fixedly mounted on the spring rope 13; the tightening limiter 15 includes a rectangular outer shell 16, a rectangular inner shell 17, a triangular prism limit tooth 18, and a sliding limit column 19. A sliding groove is provided on the adjustment limit bottom plate 14, and the rectangular outer shell 16 slides along the sliding groove on the adjustment limit bottom plate 14, and a spring is provided between the rectangular outer shell 16 and the adjustment limit bottom plate 14, and the rectangular inner shell 17 is fixedly installed on the rectangular outer shell 16, and the triangular prism limit tooth 18 is engaged and slidably set in the rectangular outer shell 16, and a spring is provided between the triangular prism limit tooth 18 and the rectangular outer shell 16, and the sliding limit column 19 is fixedly set on the anti-slip limit structure 5, and the anti-slip limit structure 5 is provided with a protrusion of a triangular prism structure.

[0037] The anti-slip limiting structure 5 includes an arm limiting ring 20, a limiting groove tube 21, an arm end arc plate 22, and a distal arm end arc plate 23. The arm limiting ring 20 is hinged to the upper arm lifting device 2, the limiting groove tube 21 is snap-fitted and installed on the arm limiting ring 20, the arm end arc plate 22 is snap-fitted and slidably installed in the limiting groove tube 21, the distal arm end arc plate 23 is snap-fitted and slidably installed in the limiting groove tube 21, and the arm end arc plate 22 and the distal arm end arc plate 23 are fixedly connected by a bracket.

[0038] The arm end arc plate 22 and the arm end arc plate 23 are both made of rubber material, the brackets between the arm end arc plate 22 and the arm end arc plate 23 are both made of rubber material, and the limiting groove tube 21 and the arm end arc plate 23 are connected by a spring.

[0039] The hypothermia warning device 6 includes a display light 24, a body temperature display meter 25, and a body temperature detection gun head 26. The display light 24 is fixedly mounted on the arc plate 23 at the distal arm end, the body temperature detection gun head 26 is snap-fitted and slidably mounted on the arm end arc plate 22, and the body temperature display meter 25 is fixedly mounted on the arc plate 23 at the distal arm end.

[0040] The body temperature detection gun head 26 is provided with a temperature sensor, a central controller, a data transmission line, and a battery. A power metal sheet is provided inside the display light 24. The display light 24 and the body temperature detection gun head 26 are connected by a spring. A sponge cushion is provided on the top of the body temperature detection gun head 26.

[0041] The adjustment and limiting bottom plate 14 is provided with holes for convenient observation of the display light 24 and the body temperature display meter 25.

[0042] The lifting angle self-limiting structure 11 includes an inclined groove limiting plate 27, a limiting rack 28, a pull rod 29, and a rack slide 30. The inclined groove limiting plate 27 is fixedly arranged on the equipment lifting plate 9, and an inclined groove is provided on the inclined groove limiting plate 27. The rack slide 30 is fixedly arranged on the inclined groove limiting plate 27. The limiting rack 28 is engaged and slidably installed in the rack slide 30, and a spring is provided between the limiting rack 28 and the rack slide 30. The pull rod 29 is fixedly installed on the limiting rack 28. A bracket 31 is provided on the side wall of the middle lifting clamp 7. The bracket 31 is limited along the inclined groove. The inclined groove in the positioning plate 27 slides, and the bracket 1 31 is in contact with the limiting rack 28. The upper arm lifting device 2 slides along the inclined groove on the inclined groove limiting plate 27, and the bracket 1 31 on the middle lifting clamp 7 slides along the inclined groove on the inclined groove limiting plate 27. Each time it passes through the limiting rack 28, the limiting rack 28 will slide down. When the position is fixed, the limiting rack 28 again limits the upper arm lifting device 2 to prevent the upper arm lifting device 2 from slipping. Only when the pull rod 29 slides can the upper arm lifting device 2 not be restricted in sliding direction by the limiting rack 28.

[0043] A torsion spring is provided on the engaging rotation point where the middle lifting clamp 7 is connected to the automatic retracting clamp 8. The automatic retracting clamp 8 is assembled from multiple groups of brackets in the same direction.

[0044] A slide groove is provided on the equipment lifting plate 9, which facilitates the anti-slip limiting structure 5 and the intermediate lifting clamp 7 to slide along a fixed straight track on the equipment lifting plate 9.

[0045] A telescopic sleeve structure 32 that is engaged and rotatably connected is provided on the bottom wall of the middle lifting clamp 7 , and the telescopic sleeve structure 32 slides in the slot on the equipment lifting plate 9 .

[0046] When in use, first fix the device on the armrest of the blood collection chair, open the armrest clamping plate 10, place the armrest clamping plate 10 on both sides of the armrest, and place the device lifting plate 9 on top of the armrest. Under the action of the spring on the armrest clamping plate 10, the device lifting plate 9 is fixed to the armrest;

[0047] Put your hand through the spring rope 13, hold the grip ball 12 in your palm, or wear a glove and stretch your arm forward. The spring rope 13 pulls the rectangular shell 16 to slide along the slot on the adjustment limit base 14. Since the sliding limit post 19 is fixedly connected to the arm-end curved plate 22, the rectangular shell 16 moves, but the sliding limit post 19 does not move. Spatial misalignment occurs between the triangular prism limit teeth 18 and the sliding limit post 19. The sliding limit post 19 loses the limiting effect of the triangular prism limit teeth 18. Due to the elastic effect of the spring in the limiting groove tube 21, the arm-end curved plate 22 rises and approaches the arm.

[0048] When the arm-end curved plate 22 is close to the arm, the temperature detection gun head 26 is pressed against the arm, and the sponge at the front end of the gun head contacts the arm, and the temperature gun starts to measure the temperature. The data measured by the gun head is transmitted to the central controller and then converted into a data signal, which is then transmitted to the temperature display meter 25. According to the value displayed on the temperature display meter 25, it is determined whether the body temperature of the person whose blood is being collected is hypothermic due to excessive blood donation;

[0049] When the temperature detection gun tip 26 is pressed against the arm, it is squeezed by the skin of the arm and moves toward the display light 24. There is a battery at the bottom of the temperature detection gun tip 26 and a metal sheet at the top of the display light 24. When the two come into contact, the display light 24 lights up, ensuring that the temperature detection gun tip 26 fits the human body, proving that the device is relatively fixed to the arm, and also ensuring that the measured temperature is accurate.

[0050] Place the upper arm into the upper arm lifting device 2, and the torsion spring between the automatic retractable clamp 8 and the intermediate lifting clamp 7 automatically causes the automatic retractable clamp 8 to clamp the upper arm;

[0051] When drawing blood from the joint vein of the arm, the arm is in a slightly curled position, and there is an angle between the upper arm and the forearm to prevent the needle from slipping. In order to facilitate the person whose blood is being drawn to adjust the arm angle by himself, the person can move his arm and slide the arm toward the body. Under the action of the inclined groove on the inclined groove limiting plate 27, the middle lifting clamp 7 slides obliquely upward. When the bracket 1 31 on the side wall of the middle lifting clamp 7 slides in the inclined groove limiting plate 27, it collides with the limiting rack 28. Since the inclined surface angle of the teeth on the limiting rack 28 is large, the bracket 1 31 can push the limiting rack 28 to slide down, ensuring that the middle lifting clamp 7 moves obliquely upward, and the limiting rack 28 prevents the middle lifting clamp 7 from sliding down.

[0052] In order to expand the tilt range that the middle lifting clamp 7 can adjust, the bracket 1 31 on the middle lifting clamp 7 can be placed away from the direction where the hinge on the middle lifting clamp 7 is located;

[0053] When the position of the intermediate lifting clamp 7 needs to be restored, the pull rod 29 is pulled, and the limiting rack 28 no longer contacts the bracket 1 31 on the intermediate lifting clamp 7, and the intermediate lifting clamp 7 can slide back to a horizontal state.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An anti-slip arm support for blood donation, characterized by: The invention comprises a forearm lifting device (1), an upper arm lifting device (2) and an external device fixing structure (3), wherein the external device fixing structure (3) is fixed on the handle of the chair, the upper arm lifting device (2) slides on the external device fixing structure (3), and the forearm lifting device (1) is hinged to the upper arm lifting device (2); the forearm lifting device (1) comprises a hand grip adjustment structure (4), an anti-slip limit structure (5), and a hypothermia warning device (6), wherein the anti-slip limit structure (5) is hinged to the upper arm lifting device (2), the hand grip adjustment structure (4) and the anti-slip limit structure (5) are engaged and slidably connected, and the hypothermia warning device (6) is engaged and installed. On the anti-slip limit structure (5); the external equipment fixing structure (3) includes an equipment lifting plate (9), an armrest clamping plate (10) and a lifting angle self-limiting structure (11), the equipment lifting plate (9) is placed on the armrest, the armrest clamping plate (10) is engaged and slid in the equipment lifting plate (9), and the armrest clamping plate (10) is close to the side wall of the armrest, and the lifting angle self-limiting structure (11) is fixedly installed on the equipment lifting plate (9); the hand grip adjustment structure (4) includes a gripping ball (12), a spring rope (13), an adjustment limit bottom plate (14), a tightening limiter (15), and the tightening limiter (15) is in contact with the anti-slip limit structure. The structure (5) is engaged and slidably connected, the adjustment limit base plate (14) is fixedly mounted on the anti-slip limit structure (5), the spring rope (13) is fixedly mounted on the tightening limiter (15), and the grasping ball (12) is fixedly mounted on the spring rope (13); the tightening limiter (15) includes a rectangular outer shell (16), a rectangular inner shell (17), a triangular prism limit tooth (18), and a sliding limit column (19), the adjustment limit base plate (14) is provided with a slide groove, the rectangular outer shell (16) slides along the slide groove on the adjustment limit base plate (14), the rectangular inner shell (17) is fixedly mounted on the rectangular outer shell (16), and the triangular prism limit tooth (18) is engaged and slidably connected. The anti-slip limit structure (5) is provided in a sliding manner in the rectangular housing (16), and a spring is provided between the triangular prism limit tooth (18) and the rectangular housing (16). The sliding limit column (19) is fixedly provided on the anti-slip limit structure (5), and a protrusion of a triangular prism structure is provided on the anti-slip limit structure (5). The hypothermia warning device (6) includes a display light (24), a body temperature display meter (25), and a body temperature detection gun head (26). The display light (24) is fixedly installed on the distal arm end arc plate (23), the body temperature detection gun head (26) is snap-fitted and slidably installed on the arm end arc plate (22), and the body temperature display meter (25) is fixedly installed on the distal arm end arc plate (23).The lifting angle self-limiting structure (11) includes an inclined groove limiting plate (27), a limiting rack (28), a pull rod (29), and a rack slide (30). The inclined groove limiting plate (27) is fixedly arranged on the equipment lifting plate (9), and the rack slide (30) is fixedly arranged on the inclined groove limiting plate (27). The limiting rack (28) is engaged and slidably installed in the rack slide (30), and a spring is provided between the limiting rack (28) and the rack slide (30). The pull rod (29) is fixed. Installed on the limiting rack (28); the upper arm lifting device (2) includes an intermediate lifting clamp (7) and an automatic retracting clamp (8); the intermediate lifting clamp (7) is hinged to the anti-slip limiting structure (5); the automatic retracting clamp (8) is engaged and rotatably connected with the intermediate lifting clamp (7); and the intermediate lifting clamp (7) is engaged and slidable on the external device fixing structure (3); a bracket (31) is provided on the side wall of the intermediate lifting clamp (7); and the bracket (31) is in contact and connected with the limiting rack (28).

2. The anti-slip arm support for blood donation according to claim 1, characterized in that: The anti-slip limiting structure (5) comprises an arm limiting ring (20), a limiting groove tube (21), an arm end arc plate (22), and a distal arm end arc plate (23). The arm limiting ring (20) is hinged to the upper arm lifting device (2). The limiting groove tube (21) is snap-fitted and mounted on the arm limiting ring (20). The arm end arc plate (22) is snap-fitted and slidably mounted in the limiting groove tube (21). The distal arm end arc plate (23) is snap-fitted and slidably mounted in the limiting groove tube (21). The arm end arc plate (22) and the distal arm end arc plate (23) are fixedly connected via a bracket.

3. The anti-slip arm support for blood donation according to claim 2, characterized in that: A torsion spring is provided at the engaging rotation point where the middle lifting clamp (7) is connected to the automatic retracting clamp (8); and a telescopic sleeve structure (32) that is engaged and rotatably connected is provided on the bottom wall of the middle lifting clamp (7).

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