Hemodialysis room nursing equipment

Abstract

The invention discloses hemodialysis room nursing equipment which comprises a base, an arm automatic limiting and fixing structure, a surgical incision expanding device and an arm double-side pressing and fixing device are arranged in the base, the arm automatic limiting and fixing structure is installed on the base in a clamped mode, and the surgical incision expanding device is fixedly installed on the top wall of the base. The arm double-side pressing and fixing device is fixedly installed on the top wall of the base. The invention belongs to the technical field of dialysis nursing equipment. In order to overcome the defects in the prior art, the hemodialysis room nursing equipment is provided, an arm can be automatically pressed and fixed in multiple directions, meanwhile, the skin of the intubation part of the arm is relatively relaxed, subsequent insertion of an artificial blood vessel is facilitated, a surgical incision of the intubation part can be expanded, and the operation efficiency is improved. And the body is ensured to be in a relatively stable state when being inserted into a'vascular access'.

Description

Technical Field

[0001] The invention belongs to the technical field of dialysis nursing equipment, and specifically refers to a hemodialysis room nursing equipment. Background Art

[0002] Hemodialysis is a medical procedure used to treat kidney failure. Its main purpose is to remove waste products, excess salt and excess water from the blood to maintain the electrolyte balance and acid-base balance in the body. This process is mainly suitable for patients with chronic kidney disease or acute renal failure. Hemodialysis usually requires the insertion of artificial veins for blood to be drawn out and returned. This artificial blood vessel is usually called a "vascular access". These "vascular accesses" are fixed in the body, checked regularly, and avoid strenuous exercise to ensure that the "vascular access" can be used properly.

[0003] Currently, when artificial blood vessels are implanted, the arm fixation effect is poor. The incision inserted into the "vascular access" will close when the arm moves slightly due to the instability of the fixation device. The arm needs to be fixed with a strap, and the fixation effect is poor. In addition, the skin tissue in the area where the "vascular access" is inserted is close to the muscle surface, and the spatial movement range of the "vascular access" when passing through the subcutaneous tissue is small. When the skin is tight, the insertion resistance of the "vascular access" is relatively large. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a hemodialysis room nursing device, which can automatically press and fix the arm in multiple directions, while making the skin at the intubation site of the arm relatively loose, which is conducive to the subsequent insertion of artificial blood vessels, and can also expand the surgical incision at the intubation site to ensure that the body is in a relatively stable state when inserting the "vascular access".

[0005] The technical solution adopted by the present invention is as follows: A hemodialysis room care device provided by the present invention includes a base, the base contains an arm automatic limit fixing structure, a surgical blade expansion device and an arm double-sided pressing fixing device, the arm automatic limit fixing structure is snap-fitted and installed on the base, the surgical blade expansion device is fixedly installed on the top wall of the base, and the arm double-sided pressing fixing device is fixedly installed on the top wall of the base; the arm automatic limit fixing structure includes a downward pressing sliding transmission device, a one-way rotation limiting structure and arm two-side fixing devices, the downward pressing sliding transmission device is snap-fitted and installed on the base, the one-way rotation limiting structure is fixedly installed on the base, and the arm two-side fixing devices are connected to the one-way rotation limiting structure.

[0006] Furthermore, the downward pressing sliding transmission device includes a basic bottom plate, a supporting plate, a downward sliding card plate, a pinion, and a rack 1. The basic bottom plate is fixedly mounted on the base, and the downward sliding card plate slides up and down along the basic bottom plate. The supporting plate is fixedly mounted on the downward sliding card plate, and the pinion is engaged and rotatably arranged in the base. The rack 1 is fixedly arranged in the downward sliding card plate, and the pinion is meshed and connected with the rack 1. During the downward pressing process of the downward sliding card plate, the rack 1 drives the pinion to rotate when it moves.

[0007] Preferably, a slot is provided in the support plate for engaging and fixing the rack 1, while limiting the activity space of the pinion gear, so that the pinion gear can rotate horizontally as the downward sliding card plate moves.

[0008] Furthermore, the one-way rotation limiting structure includes a ratchet, a ring, a paddle, a paddle slot, an electromagnet 1, and an electromagnet 2. The ring is fixedly installed in the base, the ratchet engages and rotates at the center of the ring, the paddle slot is fixedly arranged on the inner wall of the ring, the paddle is engaged and rotated in the paddle slot by a torsion spring, the electromagnet 1 is fixedly installed on the side wall of the paddle, the electromagnet 2 is fixedly installed on the side wall of the paddle slot, and the electromagnet 1 and the electromagnet 2 attract each other after power is turned on.

[0009] Furthermore, the ratchet and the pinion are fixedly connected via a bracket, so that the rotational kinetic energy of the pinion is transmitted to the ratchet, the electromagnet 1 and the electromagnet 2 are respectively connected to a power source, and the paddle is in contact with the ratchet.

[0010] Furthermore, the arm double-sided pressing and fixing device includes a screw groove, a ball screw, a nut, and an arm extrusion plate. The screw groove is fixedly set on the base, the ball screw is rotatably set on the screw groove, the nut is slid along the ball screw, and the arm extrusion plate is fixedly mounted on the nut through a bracket.

[0011] Furthermore, the ball screw and the ratchet are fixedly connected via a bracket.

[0012] Furthermore, the surgical incision expansion device includes a cylinder, a servo motor, a connecting plate, a hinged head, a screw assembly, and an expansion hook. The cylinder is fixedly mounted on the base through a bracket, and the cylinder is placed vertically relative to the base. The servo motor is fixedly mounted on the cylinder, the connecting plate is fixedly connected to the servo motor, the hinged head is snap-fitted and mounted on the connecting plate, the screw assembly is fixedly connected to the hinged head, and the expansion hook is snap-fitted and slides along the screw assembly.

[0013] Furthermore, a slot is provided on the bottom wall of the connecting plate, the hinge head slides horizontally along the slot on the connecting plate, the screw rod assembly is driven by a motor, and the hinge head is driven by a motor.

[0014] Furthermore, the front end of the expansion hook is set to be in a flat plate shape, and the front end of the expansion hook is set to be chamfered, and the front end of the expansion hook is set to be an arc structure. The front end of the flat plate-shaped expansion hook is more convenient to insert into the wound on the arm.

[0015] Furthermore, the arm double-sided pressing and fixing device includes a half-side limiting plate, a downward pressing groove, a second rack, a downward pressing engaging protrusion and an arc-shaped pressing plate, the half-side limiting plate is fixedly installed on the top wall of the base, the downward pressing groove is fixedly arranged on the half-side limiting plate, the second rack slides horizontally in the downward pressing groove, the downward pressing engaging protrusion slides in the vertical direction along the downward pressing groove, a bracket is provided on the downward pressing engaging protrusion, and the arc-shaped pressing plate and the downward pressing engaging protrusion are connected by the bracket.

[0016] Furthermore, the side wall of the downward pressing groove is connected to the second rack by a spring, the downward pressing engaging protrusion is in contact with the second rack, and the downward pressing engaging protrusion is connected to the top wall of the downward pressing groove by a spring. When the downward pressing engaging protrusion slides downward, the second rack is squeezed by the side wall of the downward pressing engaging protrusion and slides horizontally toward the edge. Although the spring has an upward pulling force on the downward pressing engaging protrusion, it is restricted by the protrusion of the second rack, so that the downward pressing engaging protrusion is restricted to a limited range of motion.

[0017] Furthermore, a semicircular opening is provided at the center of the half-limiting plate for the arm to pass through.

[0018] Furthermore, a protrusion is provided on the second rack, and by pulling the protrusion, the second rack slides horizontally in the downward pressing groove.

[0019] Preferably, the pinion gear is connected to the base via a torsion spring.

[0020] The scheme provides a hemodialysis room nursing device, which has the following beneficial effects: (1) Using the power of the support plate sliding down, the sliding card drives the small gear to generate rotational kinetic energy during the sliding process, and at the same time drives the ratchet on the same bracket to rotate. Under the limiting effect of the paddle, the ratchet can only rotate in one direction, causing the ball screw to rotate in one direction, forcing the arm squeeze plate to only be further attached to the outside of the arm during the process of the support plate being pressed downward. Even if the support plate is separated from the arm and the support plate loses the downward pressure, the ratchet will fix the arm squeeze plate at a fixed position on the ball screw due to the limiting effect of the paddle; (2) After being energized, electromagnet 1 and electromagnet 2 are attracted, so that there is no contact between the ratchet and the paddle, causing the ratchet to rotate due to the reverse force of the torsion spring, and the arm squeezing plate automatically slides in the opposite direction and separates from the arm; (3) The screw assembly with an articulated joint can adjust the deflection angle and horizontal movement distance of the expansion hook. At the same time, the duckbill structure at the front end of the expansion hook not only facilitates the separation of skin and muscle tissue, but also helps to expand the surgical incision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a hemodialysis room nursing device provided by the present invention; Figure 2 A right-side cutaway stereoscopic diagram of a hemodialysis room nursing device provided by the present invention; Figure 3 A front and cross-sectional stereoscopic diagram of a hemodialysis room nursing device provided by the present invention; Figure 4 A usage status diagram of a hemodialysis room nursing device provided by the present invention; Figure 5 An exploded diagram of a hemodialysis room nursing device provided by the present invention; Figure 6 This is an exploded view of the arm's automatic limit fixing structure; Figure 7 It is a three-dimensional cross-sectional view of the sliding pallet; Figure 8 It is a front sectional view of the one-way rotation limiting structure; Fig. 9 A bottom-up stereoscopic view of a surgical incision dilation device; Fig.10 It is a three-dimensional cross-sectional view of half of the limiting plate.

[0022] Among them, 1. automatic arm limit fixing structure, 2. surgical blade expansion device, 3. arm bilateral pressing and fixing device, 4. downward pressing sliding transmission device, 5. one-way rotation limit structure, 6. arm side fixing devices, 7. base plate, 8. support plate, 9. downward sliding card plate, 10. pinion, 11. rack 1, 12. ratchet, 13. ring, 14. paddle, 15. paddle slot, 16. electromagnet 1, 17. electromagnet 2, 18. screw slot, 19. ball screw, 20. nut, 21. arm extrusion plate, 22. cylinder, 23. servo motor, 24. connecting plate, 25. hinge head, 26. screw assembly, 27. expansion hook, 28. half-side limit plate, 29. downward pressing slide, 30. rack 2, 31. downward pressing engagement protrusion, 32. arc pressure plate.

[0023] 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

[0024] 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.

[0025] 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, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0026] like Figure 1-Figure 10 As shown, a hemodialysis room care device provided by the present invention includes a base, which contains an arm automatic limit fixing structure 1, a surgical incision expansion device 2 and an arm bilateral pressing and fixing device 3. The arm automatic limit fixing structure 1 is snap-fitted and installed on the base, the surgical incision expansion device 2 is fixedly installed on the top wall of the base, and the arm bilateral pressing and fixing device 3 is fixedly installed on the top wall of the base.

[0027] The arm bilateral pressing and fixing device 3 includes a half-side limiting plate 28, a downward pressing groove 29, a second rack 30, a downward pressing engaging protrusion 31 and an arc-shaped pressing plate 32. The half-side limiting plate 28 is fixedly installed on the top wall of the base, and the downward pressing groove 29 is fixedly arranged on the half-side limiting plate 28. The second rack 30 slides horizontally in the downward pressing groove 29, and the downward pressing engaging protrusion 31 slides in the vertical direction along the downward pressing groove 29. A bracket is provided on the downward pressing engaging protrusion 31, and the arc-shaped pressing plate 32 is connected to the downward pressing engaging protrusion 31 through the bracket.

[0028] The side wall of the downward pressing slot 29 is connected to the second rack 30 via a spring, the downward pressing engaging protrusion 31 is in contact with the second rack 30 , and the downward pressing engaging protrusion 31 is connected to the top wall of the downward pressing slot 29 via a spring.

[0029] A semicircular opening is provided at the center of the half limiting plate 28 .

[0030] The rack 2 30 is provided with a protrusion.

[0031] The arm automatic limit fixing structure 1 includes a downward pressing sliding transmission device 4, a one-way rotation limit structure 5 and fixing devices 6 on both sides of the arm. The downward pressing sliding transmission device 4 is snap-fitted and installed on the base, the one-way rotation limit structure 5 is fixedly installed on the base, and the fixing devices 6 on both sides of the arm are connected to the one-way rotation limit structure 5.

[0032] The downward-pressing sliding transmission device 4 includes a basic bottom plate 7, a supporting plate 8, a downward sliding card plate 9, a pinion 10, and a rack 11. The basic bottom plate 7 is fixedly mounted on the base, the downward sliding card plate 9 is engaged and slid up and down along the basic bottom plate 7, the supporting plate 8 is fixedly mounted on the downward sliding card plate 9, the pinion 10 is engaged and rotatably arranged in the base, the rack 11 is fixedly arranged in the downward sliding card plate 9, and the pinion 10 is meshed and connected with the rack 11.

[0033] A slot is provided in the supporting plate 8 .

[0034] The one-way rotation limiting structure 5 includes a ratchet 12, a ring 13, a paddle 14, a paddle slot 15, an electromagnet 16, and an electromagnet 2 17. The ring 13 is fixedly installed in the base, the ratchet 12 is engaged and rotated at the center of the ring 13, the paddle slot 15 is fixedly set on the inner wall of the ring 13, the paddle 14 is rotatably installed in the paddle slot 15 by means of a torsion spring, the electromagnet 16 is fixedly installed on the side wall of the paddle 14, and the electromagnet 2 17 is fixedly installed on the side wall of the paddle slot 15.

[0035] The ratchet 12 is fixedly connected to the pinion 10 via a bracket, the electromagnet 16 and the electromagnet 2 17 are respectively connected to a power source, and the paddle 14 is in contact with the ratchet 12 .

[0036] The arm double-sided pressing and fixing device 3 includes a screw groove 18, a ball screw 19, a nut 20, and an arm squeezing plate 21. The screw groove 18 is fixedly set on the base, the ball screw 19 is engaged and rotatably set on the screw groove 18, the nut 20 is engaged and slid along the ball screw 19, and the arm squeezing plate 21 is fixedly installed on the nut 20 through a bracket.

[0037] The ball screw 19 and the ratchet 12 are fixedly connected via a bracket.

[0038] The surgical incision expansion device 2 includes a cylinder 22, a servo motor 23, a connecting plate 24, a hinge head 25, a screw assembly 26, and an expansion hook 27. The cylinder 22 is fixedly mounted on the base through a bracket, and the cylinder 22 is placed vertically relative to the base. The servo motor 23 is fixedly mounted on the cylinder 22, the connecting plate 24 is fixedly connected to the servo motor 23, the hinge head 25 is snap-fitted and mounted on the connecting plate 24, the screw assembly 26 is fixedly connected to the hinge head 25, and the expansion hook 27 is snap-fitted and slides along the screw assembly 26.

[0039] A slot is provided on the bottom wall of the connecting plate 24 , and the hinged head 25 slides horizontally along the slot on the connecting plate 24 . The screw rod assembly 26 is driven by a motor, and the hinged head 25 is also driven by a motor.

[0040] The front end of the expansion hook 27 is set to be in a flat plate shape, and the front end of the expansion hook 27 is set to be rounded, and the front end of the expansion hook 27 is set to be an arc structure.

[0041] The pinion 10 is connected to the base via a torsion spring.

[0042] When in use, the arm is passed through the opening in the middle of the half limit plate 28. After the arm passes through the half limit plates 28 at both ends of the base, the bracket connected to the downward pressing engaging protrusion 31 is manually pressed to press the arc-shaped pressing plate 32 downward to limit the range of motion of the arm. After the downward pressing engaging protrusion 31 is pressed down, the rack 2 30 has the effect of unidirectionally limiting the movement direction of the downward pressing engaging protrusion 31. Although the spring on the downward pressing engaging protrusion 31 has an elastic force, it is limited by the convex teeth on the rack 2 30 and cannot produce displacement, thereby ensuring the stability of the arc-shaped pressing plate 32 when pressing the arm; when the arm is pressed, the arm exerts a pressing force on the supporting plate 8 below, and the supporting plate 8 After being pressed, the sliding card plate 9 moves vertically downward, and the rack 11 moves vertically downward, thereby driving the pinion 10 to rotate. When the pinion 10 rotates, it drives the ratchet 12 to rotate at the same angular velocity. When the ratchet 12 rotates, the paddle 14 in the collar 13 is squeezed by the ratchet 12 and deflected, and the ratchet 12 can rotate normally without pause. Although a torsion spring is provided on the pinion 10 to limit the rotation angle, the reaction force of the torsion spring will be blocked by the paddle 14 when driving the ratchet 12 to rotate in the opposite direction, thereby preventing the ratchet 12 from rotating in the opposite direction; when the ball screw 19 is driven by the ratchet 12, the nut 20 moves along the screw slot 18 toward the direction of the arm, squeezing and making the arm part The arm skin is fixed in four directions: up, down, left, and right; in order to implant artificial veins in the arm, it is necessary to open incisions at both ends of the arm, pass the artificial veins through the incisions at both ends, and suture and connect them with the patient's veins, so that it is convenient to insert the puncture needle and dialysis the blood; in order to make it easier for the artificial veins to pass through the incisions on the arm, it is necessary to enlarge the incision, extend the cylinder 22, rotate the servo motor 23, make the expansion hook 27 perpendicular to the incision on the patient's arm, and rotate the hinge head 25 to change the angle between the expansion hook 27 and the horizontal plane, which can be used to select the most suitable angle position for pulling the wound, and move the front end of the expansion hook 27 The duckbill-shaped sheet structure is inserted under the skin, and the expansion hook 27 is moved to both ends through the work of the screw assembly 26 to pull the wound open to prevent the wound from closing during the insertion of the artificial vein; after the artificial vein is passed under the body surface and connected to the patient's own blood vessels, the expansion hook 27 is removed, and the protrusion on the rack 2 30 is manually pulled to separate the arc-shaped pressure plate 32 from the arm, and then the electromagnet 16 and the electromagnet 2 17 are energized respectively. After the electromagnet 16 and the electromagnet 2 17 are energized, they are attracted, and the ratchet 12 can rotate in the opposite direction under the action of the torsion spring, and the arm squeezing plate 21 is separated from the arm, so that the arm with the artificial vein installed can be removed from the device.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] The present invention and its embodiments are described above, and such 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 ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A hemodialysis room nursing device, comprising a base, characterized in that: The base comprises an arm automatic position limiting fixing structure (1), a surgical blade expansion device (2) and an arm double-sided pressing fixing device (3); the arm automatic position limiting fixing structure (1) is mounted on the base, the surgical blade expansion device (2) is fixedly mounted on the top wall of the base, and the arm double-sided pressing fixing device (3) is fixedly mounted on the top wall of the base; the arm automatic position limiting fixing structure (1) comprises a downward pressing sliding transmission device (4), a one-way rotating position limiting structure (5) and arm double-sided fixing devices (6); the downward pressing sliding transmission device (4) is mounted on the base, the one-way rotating position limiting structure (5) is fixedly mounted on the base, and the arm double-sided fixing devices (6) are connected to the one-way rotating position limiting structure (5).

2. A hemodialysis room nursing device according to claim 1, characterized in that: The downward pressing sliding transmission device (4) comprises a base bottom plate (7), a supporting plate (8), a downward sliding card plate (9), a pinion gear (10), and a rack gear 1 (11); the base bottom plate (7) is fixedly mounted on a base, the downward sliding card plate (9) engages and slides up and down along the base bottom plate (7), the supporting plate (8) is fixedly mounted on the downward sliding card plate (9), the pinion gear (10) is engaged and rotatably arranged in the base, the rack gear 1 (11) is fixedly arranged in the downward sliding card plate (9), and the pinion gear (10) is meshed and connected with the rack gear 1 (11); and a card slot is provided in the supporting plate (8).

3. A hemodialysis room nursing device according to claim 2, characterized in that: The one-way rotation limiting structure (5) comprises a ratchet (12), a collar (13), a paddle (14), a paddle slot (15), an electromagnet 1 (16), and an electromagnet 2 (17); the collar (13) is fixedly mounted in a base; the ratchet (12) engages and rotates at the center of the collar (13); the paddle slot (15) is fixedly arranged on the inner wall of the collar (13); the paddle (14) is rotatably mounted in the paddle slot (15) by engaging with a torsion spring; the electromagnet 1 (16) is fixedly mounted on the side wall of the paddle (14); and the electromagnet 2 (17) is fixedly mounted on the side wall of the paddle slot (15).

4. A hemodialysis room nursing device according to claim 3, characterized in that: The ratchet (12) and the pinion (10) are fixedly connected via a bracket, the first electromagnet (16) and the second electromagnet (17) are respectively connected to a power source, and the paddle (14) is in contact with the ratchet (12).

5. A hemodialysis room nursing device according to claim 4, characterized in that: The arm double-sided pressing and fixing device (3) comprises a screw groove (18), a ball screw (19), a nut (20), and an arm squeezing plate (21); the screw groove (18) is fixedly arranged on a base; the ball screw (19) is rotatably arranged on the screw groove (18); the nut (20) is slidably arranged along the ball screw (19); and the arm squeezing plate (21) is fixedly mounted on the nut (20) via a bracket; the ball screw (19) and the ratchet (12) are fixedly connected via the bracket.

6. A hemodialysis room nursing device according to claim 5, characterized in that: The surgical incision expansion device (2) comprises a cylinder (22), a servo motor (23), a connecting plate (24), a hinge joint (25), a screw assembly (26), and an expansion hook (27); the cylinder (22) is fixedly mounted on a base via a bracket, and the cylinder (22) is placed vertically relative to the base; the servo motor (23) is fixedly mounted on the cylinder (22); the connecting plate (24) is fixedly connected to the servo motor (23); the hinge joint (25) is mounted on the connecting plate (24); the screw assembly (26) is fixedly connected to the hinge joint (25); and the expansion hook (27) slides along the screw assembly (26).

7. A hemodialysis room nursing device according to claim 6, characterized in that: A slot is provided on the bottom wall of the connecting plate (24), and the hinged head (25) slides horizontally along the slot on the connecting plate (24). The screw rod assembly (26) is driven by a motor, and the hinged head (25) is driven by a motor.

8. A hemodialysis room nursing device according to claim 7, characterized in that: The front end of the expansion hook (27) is configured to be in the shape of a flat plate, the front end of the expansion hook (27) is configured to be rounded, and the front end of the expansion hook (27) is configured to be in an arc-shaped structure.

9. A hemodialysis room nursing device according to claim 8, characterized in that: The arm double-sided pressing and fixing device (3) comprises a half-side limiting plate (28), a downward pressing groove (29), a second rack (30), a downward pressing engaging protrusion (31) and an arc-shaped pressing plate (32), wherein the half-side limiting plate (28) is fixedly mounted on the top wall of the base, the downward pressing groove (29) is fixedly arranged on the half-side limiting plate (28), the second rack (30) slides horizontally in the downward pressing groove (29), the downward pressing engaging protrusion (31) slides in the vertical direction along the downward pressing groove (29), a bracket is arranged on the downward pressing engaging protrusion (31), and the arc-shaped pressing plate (32) is connected to the downward pressing engaging protrusion (31) through the bracket.

10. A hemodialysis room nursing device according to claim 9, characterized in that: The side wall of the downward pressing groove (29) is connected to the second rack (30) via a spring, the downward pressing engaging protrusion (31) is in contact with the second rack (30), and the downward pressing engaging protrusion (31) is connected to the top wall of the downward pressing groove (29) via a spring; a semicircular opening is provided at the center of the half-limiting plate (28); a protrusion is provided on the second rack (30); and the pinion (10) is connected to the base via a torsion spring.

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