A nursing device for hemodialysis puncture

Abstract

The application discloses a nursing device for hemodialysis puncture and belongs to the puncture nursing field. The device comprises a supporting base, a supporting part is arranged above the supporting base, the supporting part comprises a wrist fixing part, a forearm fixing part and a large arm fixing part, two first sliding parts for supporting the wrist fixing part and the large arm fixing part are slidingly installed on the upper surface of the supporting base, a second sliding part for supporting the forearm fixing part is slidingly installed on the middle part of the upper surface of the supporting base, the wrist fixing part comprises symmetrically-distributed upper and lower wrist fixing rings, and the forearm fixing part comprises symmetrically-distributed upper and lower forearm fixing rings. The device can flexibly rotate the patient's arm to find a suitable needle insertion position, has high flexibility, can constrain the patient's hand, prevents the patient's hand from being lifted to affect the puncture work and increases the safety and stability of the puncture work.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of puncture care, more particularly, to a nursing device for hemodialysis puncture. BACKGROUND

[0002] Hemodialysis puncture is an important step in the hemodialysis treatment process, which involves leading the patient's blood out of the body through the vascular access, filtering through the dialyzer and dialysis membrane, and then returning to the body. The main purpose of hemodialysis puncture is to establish a blood access to lead the patient's blood out of the body for purification treatment and then return to the patient's body. This helps to replace the excretion function of the kidney, remove excess water and metabolic waste from the body, maintain electrolyte and acid-base balance, and thus relieve uremic symptoms.

[0003] During dialysis, the patient needs to maintain a posture for a long time to prevent the puncture site from falling off or bending. Each dialysis time is about 4-5 hours, and long-term dialysis can easily cause hand cramps in patients, which affects dialysis and makes patients extremely uncomfortable. The existing nursing device has poor flexibility and cannot provide good mobility for the patient. It can provide good restraint during puncture, but it can provide good flexibility after puncture.

[0004] In view of the above problems, the present application provides a nursing device for hemodialysis puncture. SUMMARY

[0005] In view of the problems in the prior art, the present application aims to provide a nursing device for hemodialysis puncture, which has strong flexibility and provides good mobility for the patient to prevent cramps.

[0006] To solve the above problems, the present application adopts the following technical solutions.

[0007] A nursing device for hemodialysis puncture, comprising a support base, a support component is arranged above the support base, the support component comprises a wrist fixing component, a forearm fixing component and a large arm fixing component, two first sliding members for supporting the wrist fixing component and the large arm fixing component are slidingly installed on the upper surface of the support base, and a second sliding member for supporting the forearm fixing component is slidingly installed on the middle part of the upper surface of the support base.

[0008] The wrist fixing component includes symmetrically distributed upper and lower wrist fixing rings, the forearm fixing component includes symmetrically distributed upper and lower forearm fixing rings, the upper and lower forearm fixing rings are combined to fix the patient's forearm, and the upper and lower upper arm fixing rings are combined to fix the patient's upper arm.

[0009] Further, the lower wrist fixing ring is provided with a fixing frame on the side away from the forearm fixing component, a connecting slide rod is movably clamped in the middle of the lower wrist fixing ring, the slide rod is fixedly installed on the fixing frame, the connecting slide rod is rotatably installed on the fixing frame, a handle is fixedly installed on the connecting slide rod, and the connecting slide rod has a threaded rod on the side close to the forearm fixing component.

[0010] Further, a sliding sleeve is movably clamped in the middle of the lower forearm fixing ring, the threaded rod is clamped in the sliding sleeve in a threaded manner, a rotating plate is rotatably installed in the sliding sleeve close to the threaded rod, a moving plate is provided on the side of the rotating plate away from the threaded rod, a matching slide rod is fixedly installed on the side of the moving plate close to the threaded rod, the matching slide rod is movably clamped in the threaded rod, and a first spring is fixedly connected between the moving plate and the rotating plate.

[0011] Further, the moving plate is provided with a matching head on the side away from the rotating plate, the matching head is fixedly installed on the side away from the moving plate, the moving plate is integrally formed with a protruding tooth on the side close to the matching head, and the matching head is provided with a clamping groove matched with the protruding tooth on the side close to the moving plate.

[0012] Further, a winding rotating drum is rotatably installed in the middle of the lower upper arm fixing ring, semicircular grooves are formed in the interiors of the upper and lower upper arm fixing rings, the two semicircular grooves are combined to form a circular groove, a tourniquet is arranged in the circular groove, a plurality of rubber ropes for blocking the tourniquet are fixedly installed in the circular groove, and the tourniquet is fixedly installed on the winding rotating drum at both ends.

[0013] Further, the winding drum is provided with a first ratchet plate on the side close to the lower fixing ring of the forearm, the first ratchet plate is fixedly installed on the lower fixing ring of the forearm, a second ratchet plate is provided on the side away from the lower fixing ring of the forearm, the second ratchet plate and the first ratchet plate are rotationally connected by a second spring, the second ratchet plate is fixedly installed on the connecting rod, and the end of the connecting rod is slidably clamped in the middle of the winding drum after penetrating the first ratchet plate.

[0014] Further, a plurality of needle pressing components for protecting the needle insertion position of the patient are arranged between the wrist fixing component and the forearm fixing component, the needle pressing components comprise two mutually symmetrical sliding rings, the two sliding rings are fixedly connected by a support, the two sliding rings are slidably sleeved on the outer surfaces of corresponding sliding rods, a magic tape is fixedly installed on one of the sliding rings, a U-shaped ring is fixedly installed on the other sliding ring, the magic tape penetrates the soft cloth belt, and the magic tape is sewn on the sliding ring.

[0015] Further, a first semicircular plate is fixedly installed on the lower surface of the lower fixing ring of the forearm, a plurality of uniformly distributed fixing holes are formed in the first semicircular plate, the first semicircular plate is slidably clamped in the middle of the second sliding member, a fixing groove is formed in the middle of the second sliding member, and an L-shaped rod for clamping the fixing hole and the fixing groove is fixedly installed below the end of the sliding sleeve away from the fitting head.

[0016] Further, a second semicircular plate is fixedly installed on the lower surface of the lower fixing ring of the wrist, and a third semicircular plate is fixedly installed on the lower surface of the lower fixing ring of the forearm, the second semicircular plate and the third semicircular plate are slidably clamped in the corresponding first sliding members.

[0017] Further, the upper fixing ring of the wrist and the lower fixing ring of the wrist are spliced to form an elliptical cylinder, the upper fixing ring of the forearm and the lower fixing ring of the forearm are spliced to form another elliptical cylinder, and the upper fixing ring of the forearm and the lower fixing ring of the forearm are spliced to form a circular cylinder.

[0018] Compared with the prior art, the beneficial effects of the present application are that:

[0019] 1、The device can flexibly rotate the patient's arm to find a suitable needle insertion position, has high flexibility, can constrain the patient's hand to prevent the patient's hand from lifting and affecting the puncture work, increase the safety and stability of the puncture work, and provide good flexibility for the patient after the puncture is completed.

[0020] 2、The device is provided with a connecting slide rod, which can change the state of the supporting part by rotating the connecting slide rod during use, so that the forearm fixing part and the upper arm fixing part can be fixed on the supporting base, that is, the patient's forearm and upper arm are fixed, at this time the patient's arm is fixed, and good restraint can be provided during puncture, and after puncture is completed, the patient can have certain mobility, so that the patient's discomfort during dialysis is reduced.

[0021] 3、The device is provided with a supporting part, which adopts a human body skeleton distribution, and the supporting part can be removed from the supporting base by rotating the connecting slide rod, and the removed supporting part can be bent synchronously with the bending of the patient's arm, and can also cooperate with the needle pressing part to protect the puncture position, and the blood transfusion pipeline can also be pressed by a soft cloth to prevent shaking and falling off, which further improves the patient's mobility, so that the patient can change the posture of the hand or perform simple actions after puncture, preventing the patient from being uncomfortable or having a spasm due to maintaining a posture for a long time.

[0022] 4、The device is provided with an upper arm fixing part, which is tightened at the same time as the connecting slide rod is rotated, thereby automatically pressing the patient's upper arm, making it easier to expose the patient's blood vessels, reducing blood flow at the puncture site, and making it easier to puncture.

[0023] 5、The device is provided with a wrist fixing part, which and the needle pressing part can slide along the sliding rod, not only changing the distance between the wrist fixing part and the forearm fixing part to adapt to patients with different forearm lengths, but also allowing the needle pressing part to flexibly protect the puncture position and follow the medical staff using the rope ladder puncture for real-time protection. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the whole application;

[0025] Figure 2 It is a structural schematic diagram of the supporting part in the application from one perspective;

[0026] Figure 3 It is a structural schematic diagram of the supporting part in the application from another perspective;

[0027] Figure 4 It is a structural schematic diagram of the supporting part in the application when it is bent;

[0028] Figure 5 It is a structural schematic diagram of the supporting base in the application;

[0029] Figure 6 It is a structural schematic diagram of the wrist fixing part in the application;

[0030] Figure 7 Fig. 1 is a structural schematic diagram of the forearm fixing component in the present application;

[0031] Figure 8 Fig. 3 is a sectional structural schematic diagram of the sliding sleeve in the present application;

[0032] Figure 9 Fig. 4 is a structural schematic diagram of the large arm fixing component in the present application;

[0033] Figure 10 Fig. 5 is a sectional structural schematic diagram of the upper fixing ring and the lower fixing ring of the large arm in the present application.

[0034] Explanation of figure marks:

[0035] 1, support base; 2, wrist fixing component; 3, forearm fixing component; 4, large arm fixing component; 5, needle pressing component; 11, first sliding component; 12, second sliding component; 21, upper wrist fixing ring; 22, lower wrist fixing ring; 23, sliding rod; 24, connecting sliding rod; 25, fixing frame; 31, upper forearm fixing ring; 32, lower forearm fixing ring; 33, sliding sleeve; 34, first fixing rod; 35, first semicircular plate; 36, matching head; 41, upper large arm fixing ring; 42, lower large arm fixing ring; 43, tourniquet; 44, second fixing rod; 45, winding rotary drum; 51, sliding ring; 52, soft cloth belt; 53, magic tape; 121, fixing groove; 221, second semicircular plate; 241, threaded rod; 331, rotary plate; 332, moving plate; 333, matching sliding rod; 334, first spring; 335, L-shaped rod; 351, fixing hole; 361, connecting rod; 411, rubber rope; 421, third semicircular plate; 451, first ratchet plate; 452, second ratchet plate; 453, second spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] Please refer to Figures 1 to 10The utility model provides a nursing device for hemodialysis puncture, including support base 1, the upper surface of support base 1 is equipped with the support component, and the support component includes wrist fixed component 2, forearm fixed component 3, big arm fixed component 4, the upper surface of support base 1 is slidably installed with two first sliding pieces 11 for supporting wrist fixed component 2 and big arm fixed component 4, and the middle part of the upper surface of support base 1 is slidably installed with second sliding piece 12 for supporting forearm fixed component 3, wrist fixed component 2 includes symmetrically distributed wrist upper fixed ring 21 and wrist lower fixed ring 22, forearm fixed component 3 includes symmetrically distributed forearm upper fixed ring 31 and forearm lower fixed ring 32, and big arm fixed component 4 includes symmetrically distributed big arm upper fixed ring 41 and big arm lower fixed ring 42, the lower surface of forearm lower fixed ring 32 is fixedly installed with first semicircular plate 35, first semicircular plate 35 is slidably clamped in the middle part of second sliding piece 12, the lower surface of wrist lower fixed ring 22 is fixedly installed with second semicircular plate 221, and the lower surface of big arm lower fixed ring 42 is fixedly installed with third semicircular plate 421, second semicircular plate 221 and third semicircular plate 421 are slidably clamped in the corresponding first sliding piece 11 respectively, and a plurality of needle pressing components 5 for protecting the puncture position of patient are arranged between wrist fixed component 2 and forearm fixed component 3.

[0038] In actual use, first, wrist upper fixed ring 21 and wrist lower fixed ring 22, forearm upper fixed ring 31 and forearm lower fixed ring 32, and big arm upper fixed ring 41 and big arm lower fixed ring 42 are separated, then the palm of the patient is upwards, and the arm is inserted into the position of wrist fixed component 2, forearm fixed component 3 and wrist fixed component 2 from the position of big arm fixed component 4, so that the arm of the patient is located at the position of wrist fixed component 2, and forearm fixed component 3 is located at the position of the forearm of the patient close to the elbow, then wrist upper fixed ring 21 and wrist lower fixed ring 22 are locked, so that the wrist of the patient is fixed, then forearm upper fixed ring 31 and forearm lower fixed ring 32 are locked to fix the elbow of the patient, then big arm upper fixed ring 41 and big arm lower fixed ring 42 are locked to fix the upper arm of the patient, because third semicircular plate 421 and second semicircular plate 221 are slidably clamped in the corresponding first sliding piece 11, and first semicircular plate 35 is slidably clamped in the second sliding piece 12, support base 1 is fixed on the bed or the handrail in advance, at this time, the arm of the patient can be rotated to find the appropriate puncture position, so that the device has high flexibility, the hand of the patient is conveniently constrained, the movement of the hand of the patient is prevented from affecting the puncture work, and the safety and stability of the puncture work are improved.

[0039] The upper wrist fixing ring 21 and the lower wrist fixing ring 22 are combined to fix the wrist of the patient, the upper forearm fixing ring 31 and the lower forearm fixing ring 32 are combined to fix the forearm of the patient, the upper arm fixing ring 41 and the lower arm fixing ring 42 are combined to fix the upper arm of the patient, the sliding clamping on the lower wrist fixing ring 22 is provided with a plurality of uniformly distributed sliding rods 23, the sliding rods 23 are fixedly installed on the lower forearm fixing ring 32, the side of the lower forearm fixing ring 32 away from the sliding rods 23 is fixedly installed with two symmetrically distributed first fixing rods 34, the side of the lower arm fixing ring 42 close to the lower forearm fixing ring 32 is fixedly installed with two second fixing rods 44 corresponding to the first fixing rods 34, the second fixing rods 44 and the first fixing rods 34 are hingedly connected, the upper wrist fixing ring 21 and the lower wrist fixing ring 22 are spliced to form an elliptical cylinder, the upper forearm fixing ring 31 and the lower forearm fixing ring 32 are spliced to form another elliptical cylinder, and the upper arm fixing ring 41 and the lower arm fixing ring 42 are spliced to form a circular cylinder.

[0040] Because the upper wrist fixing ring 21 and the lower wrist fixing ring 22 fix the position of the wrist of the patient, the elliptical shape can better fit the wrist of the patient, the upper forearm fixing ring 31 and the lower forearm fixing ring 32 are in an elliptical shape and can better fit the forearm of the patient, because there are more muscle tissues in the upper arm position, the use of a circular shape can better fit, so that the fixing effect is better, after puncturing the patient, the needle pressing part 5 can be used to protect the puncture position of the patient, then the second semicircular plate 221 and the third semicircular plate 421 can be taken out of the corresponding first sliding part 11, and the first semicircular plate 35 is taken out of the inside of the second sliding part 12, at this time the supporting part will be attached to the arm of the patient, which can protect and constrain the arm of the patient, at this time the second fixing rod 44 and the upper arm fixing ring 41 and the lower arm fixing ring 42 can rotate around the first fixing rod 34, the first fixing rod 34 is at the elbow position of the patient, and then the upper arm fixing part 4 can rotate synchronously with the rotation of the arm of the patient, so that the device can be taken off from the supporting base 1 after puncture is completed, and can be changed to fit the movement of the patient, so that the device has higher flexibility, and when not in use, it can provide higher mobility for the patient, and the patient will not have a spasm after maintaining a posture for a long time.

[0041] The lower arm fixing ring 22 is provided with a fixing frame 25 away from the forearm fixing part 3, the middle part of the lower arm fixing ring 22 is movably clamped with a connecting sliding rod 24, the sliding rod 23 is fixedly installed on the fixing frame 25, the connecting sliding rod 24 is rotatably installed on the fixing frame 25, the connecting sliding rod 24 is fixedly installed with a handle, the side of the connecting sliding rod 24 close to the forearm fixing part 3 is provided with a threaded rod 241, the middle part of the lower arm fixing ring 32 is movably clamped with a sliding sleeve 33, the threaded rod 241 is clamped in the inside of the sliding sleeve 33 through thread cooperation, the inside of the sliding sleeve 33 close to the threaded rod 241 is rotatably installed with a rotating plate 331, the side of the rotating plate 331 away from the threaded rod 241 is provided with a moving plate 332, the side of the moving plate 332 close to the threaded rod 241 is fixedly installed with a matching sliding rod 333, the matching sliding rod 333 is movably clamped in the inside of the threaded rod 241, the first spring 334 is fixedly connected between the moving plate 332 and the rotating plate 331, a plurality of uniformly distributed fixing holes 351 are formed in the first semicircular plate 35, the middle part of the second sliding part 12 is provided with a fixing groove 121, the sliding sleeve 33 is fixedly installed below the end away from the matching head 36 with an L-shaped rod 335 for clamping the fixing hole 351 and the fixing groove 121.

[0042] When puncturing, the second semicircular plate 221 and the third semicircular plate 421 are slidably clamped into the inside of the first sliding part 11, the first semicircular plate 35 is slidably clamped into the inside of the second sliding part 12, at this time the patient's arm is driven to be horizontal, then the nurse drives the connecting sliding rod 24 to rotate by rotating the handle on the connecting sliding rod 24, the connecting sliding rod 24 drives the threaded rod 241 to rotate, the threaded rod 241 drives the sliding sleeve 33 to move along the thread when rotating, the sliding sleeve 33 drives the L-shaped rod 335 to move when moving, when the connecting sliding rod 24 rotates to the maximum position, the L-shaped rod 335 moves into the inside of the fixing groove 121 and one of the fixing holes 351, thereby fixing the fixing hole 351 and the second sliding part 12, at this time the patient's arm is forced to be horizontal, which is convenient for medical staff to find the appropriate puncture point, after the puncture work is completed, the connecting sliding rod 24 and the threaded rod 241 can be driven to reverse by reversing the handle, thereby the sliding sleeve 33 is driven to come out of the inside of the fixing groove 121 and the fixing hole 351 at this time, the second sliding part 12 loses the limitation of the fixing hole 351, thereby the patient can lift and move the supporting part.

[0043] The side away from the rotating plate 331 of the moving plate 332 is provided with a cooperation head 36, the side away from the moving plate 332 of the cooperation head 36 is fixedly installed with a connecting rod 361, the side close to the cooperation head 36 of the moving plate 332 is integrally formed with a protruding tooth, the side close to the moving plate 332 of the cooperation head 36 is provided with a clamping groove matched with the protruding tooth, the middle part of the big arm lower fixing ring 42 is rotatably installed with a winding rotating drum 45, the interiors of the big arm upper fixing ring 41 and the big arm lower fixing ring 42 are both provided with a semicircular groove, the two semicircular grooves are combined to form a circular groove, the interior of the circular groove is provided with a tourniquet 43, the interior of the circular groove is fixedly installed with a plurality of rubber ropes 411 for blocking the tourniquet 43, both ends of the tourniquet 43 are fixedly installed on the winding rotating drum 45, the side close to the forearm lower fixing ring 32 of the winding rotating drum 45 is provided with a first ratchet plate 451, the first ratchet plate 451 is fixedly installed on the big arm lower fixing ring 42, the side away from the big arm lower fixing ring 42 of the first ratchet plate 451 is provided with a second ratchet plate 452, the second ratchet plate 452 and the first ratchet plate 451 are rotatably connected with a second spring 453, the second ratchet plate 452 is fixedly installed on the connecting rod 361, the end part of the connecting rod 361 is slidably clamped in the middle part of the winding rotating drum 45 after penetrating through the first ratchet plate 451.

[0044] When the supporting device is in a horizontal state, the connecting rod 361 is in the same horizontal line with the sliding sleeve 33. When the handle is rotated, the sliding sleeve 33 is moved, and the sliding sleeve 33 is sleeved outside the connecting rod 361. Because the connecting rod 361 is sleeved, the upper and lower fixed rings 41 and 42 of the big arm cannot be rotated, so that the patient's arm can be restrained. When the connecting slide rod 24 is rotated, the threaded rod 241 drives the matching slide rod 333 and the moving plate 332 to rotate. When the threaded rod 241 rotates, the sliding sleeve 33 moves, and the sliding sleeve 33 moves to drive the rotating plate 331, the moving plate 332, the matching slide rod 333, and the first spring 334 to move. The teeth on the moving plate 332 are clamped with the clamping groove on the matching head 36. At this time, the threaded rod 241 drives the matching head 36 to rotate through the rotating plate 331 and the moving plate 332. In the rotating process, the sliding sleeve 33 drives the moving plate 332 to push the matching head 36. When the matching head 36 and the connecting rod 361 are pushed, the second spring 453 is compressed, and the second ratchet plate 452 is engaged with the first ratchet plate 451, so that the connecting rod 361 can only rotate in one direction. When the connecting rod 361 rotates, the winding drum 45 rotates, which winds the tourniquet 43. At this time, the rubber rope 411 is stretched and deformed, and the tourniquet 43 is tightened to press the upper arm of the patient, so that the medical staff can find the blood vessel of the patient. After the puncture is completed, the second ratchet plate 452 and the first ratchet plate 451 are separated by rotating the handle on the connecting slide rod 24 in the opposite direction, and the elastic deformation of the rubber rope 411 and the elastic force of the tourniquet 43 itself can release the pressure on the patient, automatically recover to the original state, and release the supporting part to make it freely move.

[0045] The pressing needle part 5 includes two symmetrical sliding rings 51, which are fixedly connected by a support. The two sliding rings 51 are sleeved on the outer surfaces of the corresponding sliding rods 23. One of the sliding rings 51 is fixedly installed with a magic tape 53, and the other sliding ring 51 is fixedly installed with a U-shaped ring. The magic tape 53 passes through the soft cloth belt 52, and the magic tape 53 is sewn on the sliding ring 51.

[0046] After the puncture is completed, the two sliding rings 51 are slid to the puncture position, and then the medical disinfection cotton ball is placed at the puncture position. At this time, the soft cloth belt 52 is pulled to make the sliding ring 51 press the puncture position, so as to protect the puncture position. Even if the supporting device is removed from the supporting base 1, it can also play a protective role, and further improve the flexibility of the device, so that the patient can move more conveniently.

[0047] Working principle: When in actual use, first separate the wrist fixing ring 21 and the wrist fixing ring 22, the forearm fixing ring 31 and the forearm fixing ring 32, the upper arm fixing ring 41 and the upper arm fixing ring 42, and then let the patient put his palm upward from the position of the upper arm fixing part 4 to the position of the forearm fixing part 3 and the wrist fixing part 2, so that the patient's arm is in the position of the wrist fixing part 2, and the forearm fixing part 3 is located on the patient's forearm near the elbow, and then lock the wrist fixing ring 21 and the wrist fixing ring 22, the patient's wrist will be fixed, and then the upper forearm fixing ring 31 and the forearm fixing ring 32 are connected. The lower arm fixing ring 32 is locked to fix the patient's elbow, and then the upper arm fixing ring 41 and the lower arm fixing ring 42 are locked to fix the patient's upper arm. Because the third semicircular plate 421 and the second semicircular plate 221 are slidably clamped inside the corresponding first sliding part 11, and the first semicircular plate 35 is slidably clamped inside the second sliding part 12, the support base 1 is fixed to the bed or armrest in advance. When the puncture is completed, slide the two sliding rings 51 to the puncture position, and then place the medical disinfection cotton ball at the puncture position. At this time, pull the soft cloth belt 52 to make the sliding ring 51 press the puncture position.

[0048] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A nursing device for hemodialysis puncture, comprising a support base (1), characterized in that: A supporting component is provided above the support base (1), and the supporting component includes a wrist fixing component (2), a forearm fixing component (3), and an upper arm fixing component (4); two first sliding components (11) for supporting the wrist fixing component (2) and the upper arm fixing component (4) are slidably mounted on the upper surface of the support base (1); a second sliding component (12) for supporting the forearm fixing component (3) is slidably mounted on the middle portion of the upper surface of the support base (1); The wrist fixing component (2) includes a symmetrically distributed upper wrist fixing ring (21) and a lower wrist fixing ring (22), the forearm fixing component (3) includes a symmetrically distributed upper forearm fixing ring (31) and a lower forearm fixing ring (32), and the upper arm fixing component (4) includes a symmetrically distributed upper arm fixing ring (41) and a lower upper arm fixing ring (42), and two symmetrically distributed first fixing rods (34) are fixedly installed on a side of the lower forearm fixing ring (32) away from the sliding rod (23), and two second fixing rods (44) corresponding to the first fixing rods (34) are fixedly installed on a side of the lower upper arm fixing ring (42) close to the lower forearm fixing ring (32), and the second fixing rods (44) and the first fixing rods (34) are hinged to each other; The wrist fixing ring (21) and the wrist fixing ring (22) are combined to fix the patient's wrist, the forearm fixing ring (31) and the forearm fixing ring (32) are combined to fix the patient's forearm, the upper arm fixing ring (41) and the upper arm fixing ring (42) are combined to fix the patient's upper arm, and the sliding card on the wrist fixing ring (22) is provided with a plurality of evenly distributed sliding rods (23); The sliding rod (23) is fixedly mounted on the lower forearm fixing ring (32); a fixing frame (25) is provided on the side of the lower wrist fixing ring (22) away from the forearm fixing component (3); a connecting sliding rod (24) is provided on the middle movable clamp of the lower wrist fixing ring (22); the sliding rod (23) is fixedly mounted on the fixing frame (25); the connecting sliding rod (24) is rotatably mounted on the fixing frame (25); a handle is fixedly mounted on the connecting sliding rod (24); and a threaded rod (241) is provided on the side of the connecting sliding rod (24) close to the forearm fixing component (3); A sliding sleeve (33) is provided in the middle of the forearm lower fixed ring (32), the threaded rod (241) is fixed in the interior of the sliding sleeve (33) through threaded engagement, a rotating plate (331) is rotatably installed in the interior of the sliding sleeve (33) near the threaded rod (241), a movable plate (332) is provided on the side of the rotating plate (331) away from the threaded rod (241), a matching sliding rod (333) is fixedly installed on the side of the movable plate (332) near the threaded rod (241), the matching sliding rod (333) is slidably engaged in the interior of the threaded rod (241), and a first spring (334) is fixedly connected between the movable plate (332) and the rotating plate (331); A mating head (36) is provided on a side of the movable plate (332) away from the rotating plate (331); a connecting rod (361) is fixedly mounted on a side of the mating head (36) away from the movable plate (332); a convex tooth is integrally formed on a side of the movable plate (332) close to the mating head (36); and a slot for mating with the convex tooth is provided on a side of the mating head (36) close to the movable plate (332); A winding drum (45) is rotatably mounted on the middle portion of the upper arm fixing ring (42), and a semicircular groove is provided inside the upper arm fixing ring (41) and the lower arm fixing ring (42), and the two semicircular grooves are combined to form a circular groove, a tourniquet (43) is provided inside the circular groove, and a plurality of rubber ropes (411) for blocking the tourniquet (43) are fixedly mounted inside the circular groove, and both ends of the tourniquet (43) are fixedly mounted on the winding drum (45); A first ratchet plate (451) is provided on a side of the winding drum (45) close to the lower fixing ring (32) of the forearm, and the first ratchet plate (451) is fixedly mounted on the lower fixing ring (42) of the upper arm. A second ratchet plate (452) is provided on a side of the first ratchet plate (451) away from the lower fixing ring (42) of the upper arm, and a second spring (453) is rotatably connected between the second ratchet plate (452) and the first ratchet plate (451). The second ratchet plate (452) is fixedly mounted on a connecting rod (361), and the end of the connecting rod (361) passes through the first ratchet plate (451) and is slidably clamped in the middle of the winding drum (45).

2. A hemodialysis puncture nursing device according to claim 1, characterized in that: A plurality of needle pressing components (5) for protecting the patient's needle insertion position are provided between the wrist fixing component (2) and the forearm fixing component (3), and the needle pressing components (5) include two mutually symmetrical sliding rings (51). The two sliding rings (51) are fixedly connected by a bracket. The two sliding rings (51) are both slidably sleeved on the outer surface of the corresponding sliding rod (23). A Velcro (53) is fixedly installed on one of the sliding rings (51), and a U-shaped ring is fixedly installed on the other sliding ring (51). The Velcro (53) passes through the soft cloth belt (52), and the Velcro (53) is sewn on the sliding ring (51).

3. A hemodialysis puncture nursing device according to claim 2, characterized in that: A first semicircular plate (35) is fixedly mounted on the lower surface of the forearm lower fixing ring (32), and a plurality of evenly distributed fixing holes (351) are provided on the first semicircular plate (35). The first semicircular plate (35) is slidably clamped in the middle of the second sliding member (12), and a fixing groove (121) is provided in the middle of the second sliding member (12). An L-shaped rod (335) for clamping the fixing hole (351) and the fixing groove (121) is fixedly mounted below the end of the sliding sleeve (33) away from the mating head (36).

4. A hemodialysis puncture nursing device according to claim 3, characterized in that: A second semicircular plate (221) is fixedly mounted on the lower surface of the wrist lower fixed ring (22), and a third semicircular plate (421) is fixedly mounted on the lower surface of the upper arm lower fixed ring (42). The second semicircular plate (221) and the third semicircular plate (421) are respectively slidably mounted inside the corresponding first sliding member (11).

5. The hemodialysis puncture nursing device according to claim 4, characterized in that: The wrist fixing ring (21) and the wrist fixing ring (22) are spliced ​​together to form an elliptical cylinder, the forearm fixing ring (31) and the forearm fixing ring (32) are spliced ​​together to form another elliptical cylinder, and the upper arm fixing ring (41) and the upper arm fixing ring (42) are spliced ​​together to form a circular cylinder.

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