A hemodialysis tube detachment alarm device

Abstract

The present invention relates to the field of medical device technology, and specifically to a hemodialysis pipeline detachment alarm device, including a basic belt and a fixing belt, the basic belt is in a rectangular structure, the basic belt is made of a flexible material, a double-sided film is attached to the bottom of the basic belt, a pressure groove is provided on the top of the basic belt, a plurality of elastic strips 1 distributed in a straight line are fixedly installed on the inner wall of the pressure groove, an arc-shaped groove is provided on the top of the elastic strip 1, and Velcro 1 is fixedly installed on the top of the basic belt and on both sides of the pressure groove. The present invention designs a basic belt and a fixing belt, firstly, the basic belt and the fixing belt can be directly attached to the human body, without being fixed on a bed or other fixed positions, therefore, it does not affect the patient's limb activities, and has high practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a hemodialysis pipeline detachment alarm device. Background Art

[0002] Hemodialysis is a treatment for patients with acute and chronic renal failure. It drains blood from the body to the outside of the body through a hemodialysis tube, removes metabolic waste from the body through a dialyzer, maintains electrolyte and acid-base balance, and finally returns the purified blood.

[0003] Hemodialysis uses a hemodialysis tube. When in use, one end of the hemodialysis tube is fixedly connected to the dialyzer, and the other end of the hemodialysis tube is connected to the human artery through a puncture needle. The hemodialysis tube is accidentally pulled during actual use. Since one end of the hemodialysis tube is connected to the human body, when the hemodialysis tube is pulled, it is easy for the needle to detach from the human body, or the connection between the hemodialysis tube and the needle to fall off. This situation will pose a hidden danger to the patient's life safety. Therefore, a hemodialysis tube detachment alarm device is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a hemodialysis tubing detachment alarm device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hemodialysis tube detachment alarm device, comprising a basic belt and a fixing belt, wherein the basic belt is in a rectangular structure, the basic belt is made of a flexible material, a double-sided film is attached to the bottom of the basic belt, a pressure groove is provided on the top of the basic belt, a plurality of elastic strips 1 distributed in a straight line are fixedly installed on the inner wall of the pressure groove, an arc groove is provided on the top of the elastic strip 1, and Velcro 1 is fixedly installed on the top of the basic belt and on both sides of the pressure groove;

[0006] The fixing belt is arranged above the base belt, an alarm unit is arranged on the top of the fixing belt, a Velcro 2 is fixedly installed on the bottom of the fixing belt, the Velcro 1 is fitted with the Velcro 2, a plurality of fixing frames distributed in a straight line are fixedly installed on the bottom of the fixing belt, the fixing frame is a U-shaped structure, the fixing frame is made of hard plastic, lifting grooves are provided on both sides of the inner wall of the fixing frame, a lifting frame of a U-shaped structure is arranged on the inner side of the fixing frame, a roller unit is arranged on the inner side of the lifting frame, both sides of the outer wall of the lifting frame are slidably connected with the lifting grooves through brackets, a second elastic strip is fixedly installed on the inner wall of the fixing frame and above the lifting frame, and the second elastic strip is in contact with the top of the lifting frame.

[0007] In the above-mentioned hemodialysis tube detachment alarm device, the alarm unit is composed of a buzzer, an adjusting rod and a sensor. The buzzer is fixedly connected to the top of the fixing belt. The buzzer is in a circular ring structure. A through hole is opened on the fixing belt. The through hole passes through the fixing belt and the fixing frame and is aligned with the buzzer. The adjusting rod is threadedly connected to the inner ring wall of the buzzer. The bottom of the adjusting rod extends into the through hole. A spring telescopic rod 1 is inserted at the bottom of the adjusting rod. The bottom of the spring telescopic rod 1 extends out of the adjusting rod. The sensor is fixedly connected to one end of the spring telescopic rod 1 inserted in the adjusting rod.

[0008] In the above-mentioned hemodialysis pipeline detachment alarm device, a fixing strip made of flexible plastic material is fixedly installed on the top of the base belt and on both sides of the pressure groove. The top of the fixing strip is flush with the top of the base belt. A plurality of linearly distributed card slots are opened on the top of the fixing strip. The card slots are in an L-shaped structure. The opening positions of the card slots on the two fixing strips correspond to each other one by one. Two symmetrically arranged card blocks are fixedly installed on the bottom of the fixing frame. The card blocks are in an L-shaped structure and are connected to the corresponding card slots.

[0009] In the above-mentioned hemodialysis pipeline detachment alarm device, the roller unit consists of a fixed shaft, a rotating roller and a telescopic shaft. A rotating groove is provided on one side of the lifting frame, and a rotating plate is rotatably installed on the inner wall of the rotating groove through a spring hinge. One end of the fixed shaft is fixedly connected to the rotating plate, and the rotating roller is rotatably connected to the fixed shaft. An electric telescopic rod is fixedly installed on the side of the lifting frame away from the rotating plate, and one end of the telescopic shaft is fixedly connected to the telescopic end of the electric telescopic rod. A connecting groove is provided at one end of the fixed shaft away from the rotating plate, and one end of the telescopic shaft away from the electric telescopic rod is inserted into the connecting groove. A connecting strip is fixedly installed on the inner ring wall of the rotating roller, and an induction groove of a circular ring structure is provided on the outer wall of the fixed shaft. One end of the connecting strip away from the rotating roller is slidably connected in the induction groove. An induction coil is fixedly installed in the induction groove, and the induction coil is connected to the alarm unit through a wire.

[0010] In the above-mentioned hemodialysis tubing detachment alarm device, the outer wall of the rotating roller is an arc-shaped concave structure, and a gelatin layer is fixedly installed on the outer wall of the rotating roller.

[0011] In the above-mentioned hemodialysis pipeline detachment alarm device, a telescopic groove is provided in the fixed shaft, and a spring telescopic rod 2 is fixedly installed in the telescopic groove, one end of the spring telescopic rod 2 extends into the connecting groove, and a plurality of through grooves evenly distributed along its circumference are provided on the outer wall of the fixed shaft, and the through groove is connected with the telescopic groove, and a limit clip strip is rotatably installed on the inner wall of the through groove through a spring hinge, one end of the limit clip strip extends into the telescopic groove and contacts the end of the spring telescopic rod 2, and a limit tooth groove is provided on the inner ring wall of the rotating roller, and a clip tooth is fixedly installed on one end of the limit clip strip.

[0012] In the above-mentioned hemodialysis tube detachment alarm device, locking belts are provided on the top of the base belt and on both sides of the pressure groove, one end of the locking belt is fixedly connected to the base belt, and a buttonhole is provided at the end of the locking belt away from the fixed end. A locking buckle is fixedly installed on the top of the base belt, and the locking buckle is inserted into the buttonhole on the corresponding locking belt.

[0013] In the above-mentioned hemodialysis tube detachment alarm device, a plurality of buckles distributed in a straight line are fixedly installed on both sides of the basic belt, a binding belt is arranged below the basic belt, and both ends of the binding belt are respectively connected to the buckles on both sides of the basic belt.

[0014] Compared with the existing technology, the advantages of the hemodialysis tube detachment alarm device are: the present invention designs a basic belt and a fixing belt. First, the basic belt and the fixing belt can be directly attached to the human body without being fixed on the bed or other fixed positions. Therefore, it does not affect the patient's limb activities and has high practicality. Secondly, the basic belt and the fixing belt can monitor and alarm the hemodialysis tube in both horizontal and vertical pulling directions, avoiding the hemodialysis tube from falling off due to accidental pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the base belt and the fixing belt in the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the base belt in the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing belt in the present invention.

[0018] Figure 4 The present invention Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 5 The present invention Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Figure 6 It is a schematic cross-sectional structural diagram of the fixing frame in the present invention.

[0021] Figure 7 The present invention Figure 6 Schematic diagram of the local enlarged structure at point C in the middle.

[0022] Figure 8 The present invention Figure 6 Schematic diagram of the local enlarged structure at point D in the middle.

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the base belt and the binding belt in the present invention.

[0024] In the figure: 1. base belt; 2. fixing belt; 101. pressure groove; 102. elastic strip 1; 103. arc groove; 104. Velcro 1; 3. alarm unit; 201. Velcro 2; 4. fixing frame; 401. lifting slide; 5. lifting frame; 6. roller unit; 402. elastic strip 2; 301. buzzer; 302. adjustment rod; 303. sensor; 202. through hole; 304. spring telescopic rod 1 ; 105, fixed strip; 106, card slot; 403, card block; 601, fixed shaft; 602, rotating roller; 603, telescopic shaft; 501, rotating slot; 502, rotating plate; 503, electric telescopic rod; 604, connecting slot; 605, connecting strip; 606, induction slot; 607, telescopic slot; 608, spring telescopic rod II; 609, through slot; 610, limit card strip; 7, locking belt; 8, binding belt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-Figure 9 A hemodialysis tube detachment alarm device comprises a basic belt 1 and a fixing belt 2, wherein the basic belt 1 is in a rectangular structure and is made of a flexible material. A double-sided film is attached to the bottom of the basic belt 1, and a pressure groove 101 is provided on the top of the basic belt 1. A plurality of elastic strips 102 distributed in a straight line are fixedly installed on the inner wall of the pressure groove 101, and an arc-shaped groove 103 is provided on the top of the elastic strip 102. Velcro strips 104 are fixedly installed on the top of the basic belt 1 and on both sides of the pressure groove 101. When in use, the basic belt 1 is attached to the patient's body or arm through the double-sided film, the pressure groove 101 is used to cooperate with the shape change of the elastic strip 102, and the elastic strip 102 is used to support the hemodialysis tube. At the same time, the intermittently distributed elastic strips 102 will not affect the bending of the patient's arm, and the arc-shaped groove 103 is used to fit the hemodialysis tube.

[0028] The fixing belt 2 is arranged above the basic belt 1, and an alarm unit 3 is arranged on the top of the fixing belt 2. A Velcro 201 is fixedly installed on the bottom of the fixing belt 2, and the Velcro 104 fits with the Velcro 201. A plurality of fixing frames 4 distributed in a straight line are fixedly installed on the bottom of the fixing belt 2. The fixing frames 4 are U-shaped structures, and the fixing frames 4 are made of hard plastic. Lifting slide grooves 401 are opened on both sides of the inner wall of the fixing frame 4, and a lifting frame 5 with a U-shaped structure is arranged on the inner side of the fixing frame 4. A roller unit 6 is arranged on the inner side of the lifting frame 5. Both sides of the outer wall of the lifting frame 5 are slidably connected with the lifting slide grooves 401 through brackets. An elastic strip 2 402 is fixedly installed on the inner wall of the fixing frame 4 and above the lifting frame 5. The elastic strip 2 402 contacts with the top of the lifting frame 5, and the fixing belt 2 is fixedly connected to the basic belt 1 through the fit between the Velcro 104 and the Velcro 201.

[0029] The alarm unit 3 is composed of a buzzer 301, an adjustment rod 302 and a sensor 303. The buzzer 301 is fixedly connected to the top of the fixing belt 2. The buzzer 301 is in a circular ring structure. The fixing belt 2 is provided with a through hole 202. The through hole 202 passes through the fixing belt 2 and the fixing frame 4 and is aligned with the buzzer 301. The adjustment rod 302 is threadedly connected to the inner ring wall of the buzzer 301. The bottom of the adjustment rod 302 extends into the through hole 202. A spring extension is inserted at the bottom of the adjustment rod 302. The retractable rod 304, the bottom of the spring telescopic rod 304 extends out the adjusting rod 302, the sensor 303 is fixedly connected to one end of the spring telescopic rod 304 inserted in the adjusting rod 302, a connecting ring with a circular ring structure is fixedly installed on the bottom of the outer wall of the adjusting rod 302, a corresponding groove is opened on the inner ring wall of the buzzer 301, and a guide piece with a circular tubular structure is fixedly installed in the groove. This structure ensures that the adjusting rod 302 will always remain connected to the buzzer 301 during the process of thread lifting and lowering.

[0030] A fixing strip 105 made of flexible plastic material is fixedly installed on the top of the base belt 1 and on both sides of the pressure groove 101. The top of the fixing strip 105 is flush with the top of the base belt 1. A plurality of linearly distributed card slots 106 are provided on the top of the fixing strip 105. The card slots 106 are in an L-shaped structure. The opening positions of the card slots 106 on the two fixing strips 105 correspond to each other. Two symmetrically arranged card blocks 403 are fixedly installed on the bottom of the fixing frame 4. The card blocks 403 are in an L-shaped structure. The card blocks 403 are snapped into the corresponding card slots 106. The fixing strip 105 is used to support the fixing frame 4 to a certain extent, so as to prevent the fixing frame 4 from sinking due to the influence of the patient's muscles during use, causing the rotating roller 602 to be unable to fit the hemodialysis tube.

[0031] The roller unit 6 is composed of a fixed shaft 601, a rotating roller 602 and a telescopic shaft 603. A rotating groove 501 is provided on one side of the lifting frame 5. A rotating plate 502 is rotatably installed on the inner wall of the rotating groove 501 through a spring hinge. One end of the fixed shaft 601 is fixedly connected to the rotating plate 502. The rotating roller 602 is rotatably connected to the fixed shaft 601. An electric telescopic rod 503 is fixedly installed on the side of the lifting frame 5 away from the rotating plate 502. One end of the telescopic shaft 603 is fixedly connected to the telescopic end of the electric telescopic rod 503. A connecting groove 604 is provided on the end of the fixed shaft 601 away from the rotating plate 502. The end of the telescopic shaft 603 away from the electric telescopic rod 503 is inserted into the connecting groove 604. A connecting strip is fixedly installed on the inner ring wall of the rotating roller 602. 605, a circular ring-shaped sensing groove 606 is provided on the outer wall of the fixed shaft 601, and one end of the connecting strip 605 away from the rotating roller 602 is slidably connected in the sensing groove 606, and an induction coil is fixedly installed in the sensing groove 606, and the induction coil is connected to the alarm unit 3 through a wire. Since the rotating roller 602 is attached to the hemodialysis tube through the gelatin layer, when the hemodialysis tube is pulled horizontally, the rotating roller 602 will rotate synchronously, and the rotation of the rotating roller 602 will drive the connecting strip 605 to rotate in the sensing groove 606, and the rotation of the connecting strip 605 will be sensed by the induction coil. When the PLC controller senses that the rotating roller 602 has rotated a specified angle, it will control the buzzer 301 to alarm, and inform the patient and medical staff to prevent the hemodialysis tube from being pulled and falling off.

[0032] The outer wall of the rotating roller 602 is an arc-shaped concave structure, and a gelatin layer is fixedly installed on the outer wall of the rotating roller 602.

[0033] The fixed shaft 601 is provided with a telescopic slot 607, in which a spring telescopic rod 608 is fixedly installed, one end of which extends into the connecting slot 604, and a plurality of through slots 609 evenly distributed along its circumference are provided on the outer wall of the fixed shaft 601, the through slots 609 are connected with the telescopic slot 607, and a limit clamping strip 610 is rotatably installed on the inner wall of the through slot 609 through a spring hinge, one end of which extends into the telescopic slot 607 and contacts with the end of the spring telescopic rod 608, so that the rotating roller 602 A limit tooth groove is provided on the inner ring wall, and a locking tooth is fixedly installed at one end of the limit clamping strip 610. When the telescopic shaft 603 is inserted into the connecting groove 604, it will squeeze the spring telescopic rod 2 608. When the telescopic shaft 603 is separated from the connecting groove 604, the spring telescopic rod 2 608 will move in the direction of the connecting groove 604. After the spring telescopic rod 2 608 moves, it will separate from the limit clamping strip 610. At this time, the limit clamping strip 610 will be in an inclined state driven by the spring hinge, driving the locking tooth to engage with the limit tooth groove, thereby locking the rotating roller 602.

[0034] A locking belt 7 is provided on the top of the base belt 1 and on both sides of the pressure groove 101. One end of the locking belt 7 is fixedly connected to the base belt 1. A buttonhole is provided at the end of the locking belt 7 away from the fixed end. A locking buckle is fixedly installed on the top of the base belt 1. The locking buckle is inserted into the buttonhole on the corresponding locking belt 7. The locking belt 7 is used to reinforce the fixing belt 2 to avoid excessive pulling force in the vertical direction, which directly lifts the fixing belt 2 off the base belt 1.

[0035] A number of buckles distributed in a straight line are fixedly installed on both sides of the basic belt 1. A binding belt 8 is arranged below the basic belt 1. The two ends of the binding belt 8 are respectively connected to the buckles on both sides of the basic belt 1. The binding belt 8 is used to further reinforce the basic belt 1 when the basic belt 1 is attached to the patient's arm.

[0036] The specific working principle and method of use of the present invention are explained in detail below: during use, after the fixing belt 2 is fixed on the base belt 1, it will drive the rotating roller 602 to contact the top of the hemodialysis tube. At this time, the hemodialysis tube will be stuck in the arc groove 103 under the resistance of the rotating roller 602. At this time, the fixing belt 2 cooperates with the base belt 1 to have a certain clamping effect on the hemodialysis tube, and the gelatin layer on the outer wall of the rotating roller 602 can make the rotating roller 602 fit tightly against the outer wall of the hemodialysis tube.

[0037] When the hemodialysis tube is pulled horizontally, the rotating roller 602 will rotate synchronously, and the rotation of the rotating roller 602 will drive the connecting strip 605 to rotate in the induction groove 606. The rotation of the connecting strip 605 will be sensed by the induction coil. When the PLC controller senses that the rotating roller 602 rotates a specified angle, it will control the buzzer 301 to alarm, inform the patient and medical staff, and prevent the hemodialysis tube from being pulled and falling off. When the hemodialysis tube is pulled too fast, the rotating roller 602 will rotate quickly. At this time, the electric telescopic rod 503 will drive the telescopic shaft 603 to shrink quickly. At this time, one end of the fixed shaft 601 has no force-bearing end. Driven by the spring hinge, the rotating plate 502 will drive the fixed shaft 601 and the rotating roller 602 to squeeze the hemodialysis tube. The rotating grooves 501 on the lifting frames 5 are staggered in sequence. The hemodialysis tube can be clamped by the fixed shafts 601 and the rotating rollers 602, which reduces the speed at which the hemodialysis tube is pulled and the possibility of the hemodialysis tube falling off.

[0038] When the hemodialysis tube is pulled vertically, the hemodialysis tube will drive the lifting frame 5 to rise, and the rising lifting frame 5 will squeeze the elastic strip 2 402. When the elastic strip 2 402 is squeezed to the specified position, it will contact the spring telescopic rod 1 304 and shrink it. The spring telescopic rod 1 304 shrinks and contacts the sensor 303, causing the buzzer 301 to alarm, further reducing the possibility of the hemodialysis tube falling off.

[0039] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hemodialysis tube detachment alarm device, comprising a base belt (1) and a fixing belt (2), characterized in that: The base belt (1) has a rectangular structure and is made of a flexible material. A pressure groove (101) is provided at the top of the base belt (1). A plurality of elastic strips (102) distributed in a straight line are fixedly installed on the inner wall of the pressure groove (101). An arc-shaped groove (103) is provided at the top of the elastic strip (102). Velcro strips (104) are fixedly installed at the top of the base belt (1) and on both sides of the pressure groove (101). The fixing belt (2) is arranged above the base belt (1), an alarm unit (3) is arranged on the top of the fixing belt (2), a Velcro strip 2 (201) is fixedly installed on the bottom of the fixing belt (2), a plurality of fixing frames (4) distributed in a straight line are fixedly installed on the bottom of the fixing belt (2), the fixing frames (4) are U-shaped and made of hard plastic, both sides of the inner wall of the fixing frame (4) are provided with lifting grooves (401), a lifting frame (5) of a U-shaped structure is arranged on the inner side of the fixing frame (4), a roller unit (6) is arranged on the inner side of the lifting frame (5), both sides of the outer wall of the lifting frame (5) are slidably connected to the lifting groove (401) through brackets, and a second elastic strip (402) is fixedly installed on the inner wall of the fixing frame (4) and located above the lifting frame (5), and the second elastic strip (402) is in contact with the top of the lifting frame (5); The roller unit (6) is composed of a fixed shaft (601), a rotating roller (602) and a telescopic shaft (603). A rotating groove (501) is provided on one side of the lifting frame (5). A rotating plate (502) is hingedly connected to the inner wall of the rotating groove (501) via a spring hinge. One end of the fixed shaft (601) is fixedly connected to the rotating plate (502). The rotating roller (602) is rotatably connected to the fixed shaft (601). An electric telescopic rod (503) is fixedly installed on one side of the lifting frame (5) away from the rotating plate (502). One end of the telescopic shaft (603) is fixedly connected to the telescopic end of the electric telescopic rod (503). On the end, a connecting groove (604) is provided at one end of the fixed shaft (601) away from the rotating plate (502), and one end of the telescopic shaft (603) away from the electric telescopic rod (503) is inserted into the connecting groove (604). A connecting strip (605) is fixedly installed on the inner ring wall of the rotating roller (602), and a sensing groove (606) with a circular ring structure is provided on the outer wall of the fixed shaft (601). One end of the connecting strip (605) away from the rotating roller (602) is slidably connected in the sensing groove (606), and an induction coil is fixedly installed in the sensing groove (606), and the induction coil is connected to the alarm unit (3) through a wire.

2. A hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: A fixing strip (105) made of a flexible plastic material is fixedly installed on the top of the base strip (1) and on both sides of the pressure groove (101). The top of the fixing strip (105) is flush with the top of the base strip (1). A plurality of slots (106) distributed in a straight line are opened on the top of the fixing strip (105). The slots (106) are in an L-shaped structure. The opening positions of the slots (106) on the two fixing strips (105) correspond to each other. Two symmetrically arranged card blocks (403) are fixedly installed on the bottom of the fixing frame (4). The card blocks (403) are in an L-shaped structure. The card blocks (403) are snap-connected in the corresponding card slots (106).

3. A hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: The outer wall of the rotating roller (602) is an arc-shaped concave structure, and a gelatin layer is fixedly mounted on the outer wall of the rotating roller (602).

4. A hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: The fixed shaft (601) is provided with a telescopic groove (607), a spring telescopic rod 2 (608) is fixedly installed in the telescopic groove (607), one end of the spring telescopic rod 2 (608) extends into the connecting groove (604), a plurality of through grooves (609) evenly distributed along the circumference thereof are provided on the outer wall of the fixed shaft (601), the through grooves (609) are connected with the telescopic groove (607), a limit clamping strip (610) is rotatably installed on the inner wall of the through groove (609) via a spring hinge, one end of the limit clamping strip (610) extends into the telescopic groove (607) and contacts the end of the spring telescopic rod 2 (608), a limit tooth groove is provided on the inner ring wall of the rotating roller (602), one end of the limit clamping strip (610) is fixedly installed with a clamping tooth.

5. The hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: A locking belt (7) is provided at the top of the base belt (1) and on both sides of the pressure groove (101); one end of the locking belt (7) is fixedly connected to the base belt (1); a button hole is provided at the end of the locking belt (7) away from the fixed end; a locking buckle is fixedly installed at the top of the base belt (1); the locking buckle is inserted into the button hole on the corresponding locking belt (7).

6. A hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: A plurality of buckles distributed in a straight line are fixedly mounted on both sides of the base belt (1), a binding belt (8) is arranged below the base belt (1), and both ends of the binding belt (8) are respectively connected to the buckles on both sides of the base belt (1).

7. A hemodialysis tubing fall-off alarm device according to claim 1, characterized in that: The alarm unit (3) is composed of a buzzer (301) and an adjustment rod (302). The buzzer (301) is fixedly connected to the top of the fixing belt (2). The buzzer (301) is in a circular ring structure. A through hole (202) is provided on the fixing belt (2). The through hole (202) passes through the fixing belt (2) and the fixing frame (4) and is aligned with the buzzer (301). The adjustment rod (302) is threadedly connected to the inner ring wall of the buzzer (301). The bottom of the adjustment rod (302) extends into the through hole (202). A spring telescopic rod (304) is inserted into the bottom of the adjustment rod (302). The bottom of the spring telescopic rod (304) extends out of the adjustment rod (302). One end of the spring telescopic rod (304) inserted into the adjustment rod (302) is fixedly mounted with a sensor (303).

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