Hemodialysis fixing and hemostasis device

Abstract

The invention provides a hemodialysis fixing and hemostasis device which comprises a movable seat and a base, the movable seat is located above the base, an arc-shaped groove is formed in the upper surface of the movable seat, a silica gel pad is installed in the arc-shaped groove, two adjusting mechanisms are installed on the side wall of the movable seat, and hemostasis auxiliary mechanisms are installed on the adjusting mechanisms; the bottom, close to the rear side, of the movable seat is fixedly connected with the top of a rotating shaft. The movable seat is rotationally connected with the base through the rotating shaft. A clamping block is connected to the bottom, close to the front end, of the movable seat, an arc-shaped clamping groove is formed in the upper surface, close to the front end, of the base, and the clamping block is clamped in the clamping groove and is in sliding fit with the clamping groove. By means of the base and the rotating shaft, the movable seat can support and position the forearm and bear the forearm of a patient to move left and right at the same time, muscles of the big arm and the shoulder are moved, and arm fatigue of the patient is relieved; the hemostasis auxiliary mechanism is used for conducting auxiliary pressing hemostasis on the two needle openings in the forearm of the patient, and manual pressing hemostasis of medical staff is replaced.

Description

Technical Field

[0001] The invention relates to the technical field of hemodialysis, and in particular to a hemodialysis fixation and hemostasis device. Background Art

[0002] Hemodialysis is a blood purification technology for renal replacement therapy for patients with acute and chronic renal failure. It drains blood from the body to the outside, exchanges substances in the blood through a dialyzer, removes metabolic waste from the body, maintains electrolyte and acid-base balance, and removes excess water from the body. The removed blood then flows back into the patient's body. Hemodialysis is of great significance in alleviating patient symptoms and prolonging survival. Currently, the hemodialysis process relies on a dialyzer. Two puncture needles are used to puncture the arterial fistula and venous fistula of the patient's forearm respectively, and the two pipelines are connected to the dialyzer to form a blood circulation circuit. In order to avoid obstruction caused by the fixation of the two puncture needles, the puncture positions of the two puncture needles are usually selected to form a certain distance, and one puncture needle is inserted close to the hand on the forearm, and the other puncture needle is inserted slightly away from the hand.

[0003] Since the hemodialysis process is long, in order to prevent the patient's puncture arm from shaking unconsciously, an auxiliary nursing device is usually used to position the patient's forearm and keep the patient's forearm still. However, the traditional auxiliary nursing device is fixed on the hospital bed. The long-term positioning of the patient's forearm will cause the patient's arm to be in the same posture for a long time, causing strain on the patient's upper arm and shoulder. It is impossible to support the patient's arm for proper movement to relieve fatigue while positioning the forearm. In addition, after the dialysis is completed, the medical staff needs to quickly press the needle port with a cotton ball with one hand after pulling out the puncture needle, and the other hand needs to deal with the pulled out puncture needle and pipeline. Hemodialysis usually has two needle ports, and the medical staff has no time to press the two needle ports. The existing auxiliary nursing device cannot provide auxiliary effect for needle port pressing to reduce the workload of medical staff. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a hemodialysis fixation and hemostasis device.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A hemodialysis fixation and hemostasis device comprises a movable seat and a base, the movable seat is located above the base, the upper surface of the movable seat is provided with an arc groove along the front-to-back direction, a silicone pad is installed in the arc groove, two adjustment mechanisms are installed on the left or right side wall of the movable seat, one in front and one in the back, and a hemostasis auxiliary mechanism is installed on the adjustment mechanism; a rotating shaft is installed in the base near the rear side through a first bearing, the bottom of the movable seat is fixedly connected to the top of the rotating shaft near the rear side, and the movable seat is rotatably connected to the base via the rotating shaft; a clamping block is connected to the bottom of the movable seat near the front end, a ball is rotatably installed on the bottom of the clamping block, an arc-shaped clamping groove is provided on the upper surface of the base near the front end, the clamping block is clamped in the clamping groove and forms a sliding fit with the clamping groove, and the bottom of the ball is in contact with the bottom surface of the clamping groove.

[0007] As a preferred solution of the present invention, the adjusting mechanism includes a first fixed block, a second fixed block and a screw, the first fixed block is installed on the side wall of the movable seat and close to the end, and the second fixed block is installed on the side wall of the movable seat and close to the middle; a screw is connected between the adjacent first fixed block and the second fixed block, and both ends of the screw are rotatably matched with the first fixed block and the second fixed block through a second bearing; the front end of the screw in the front adjusting mechanism passes through the first fixed block on the front side, and the rear end of the screw in the rear adjusting mechanism passes through the first fixed block on the rear side, and the front end of the screw on the front side and the rear end of the screw on the rear side are both connected to a screw driving mechanism.

[0008] As a preferred embodiment of the present invention, the hemostasis auxiliary mechanism includes a movable base, a supporting arm, a lifting cylinder and a hemostasis pressure component; a screw hole is provided in the middle of the movable base, and the movable base is sleeved on the corresponding screw rod through the screw hole, and when the screw rod rotates, the movable base thereon can be driven to move forward and backward along the side wall of the movable seat; one end of the supporting arm is rotatably connected to the top of the movable base, and the other end of the supporting arm is located above the arc groove; the lifting cylinder is installed on the supporting arm and close to the other end of the supporting arm, and the piston rod of the lifting cylinder vertically downward passes through the supporting arm and slides with the supporting arm, and the hemostasis pressure component is connected to the bottom end of the piston rod of the lifting cylinder.

[0009] As a preferred embodiment of the present invention, the hemostatic pressure component includes a sealing box and a guide sleeve, a guide cap, an air bag and an extrusion cylinder arranged in the sealing box; the top of the sealing box is fixedly connected to the bottom end of the piston rod of the lifting cylinder, a circular through hole is arranged on the bottom plate of the sealing box, the guide sleeve is vertically arranged on the bottom plate of the sealing box, the bottom of the guide sleeve is inserted into the circular through hole, and the bottom end of the guide sleeve is parallel to the bottom end of the circular through hole; a limiting groove is vertically provided on one side of the guide sleeve, and the guide cap is a cover structure with an open bottom, a gas duct is arranged above the same side wall of the guide cap, and a guide push block is arranged below, The horizontally extended length of the guide push block is greater than the length of the gas duct. A plurality of guide caps placed in sequence from bottom to top are arranged in the guide sleeve. The outer wall of the guide cap contacts the inner wall of the guide sleeve and can slide relatively when subjected to vertical force. The gas duct and the guide push block on the guide cap are both located in the limit groove. An air bag is arranged in each guide cap. The gas duct on the guide cap is communicated with the corresponding air bag, and a hemostatic silicone pad is arranged at the bottom of the air bag. The extrusion cylinder is arranged above the guide sleeve, and the piston rod of the extrusion cylinder extends vertically downward and toward the top of the guide cap. When the piston rod of the extrusion cylinder extends downward, it can push the guide cap in the guide sleeve to move downward.

[0010] As a preferred solution of the present invention, the hemostatic pressure component also includes a sealing pad, a pre-stress spring, a rotating sleeve and a rotating rod; the guide sleeve is provided with a sealing groove near the bottom, and the bottom plate of the sealing box is provided with a storage cavity horizontally corresponding to and communicating with the sealing groove; the sealing pad is slidably matched with the sealing groove and the storage cavity; one end of the pre-stress spring is fixedly connected to the side wall of the storage cavity away from the sealing groove, and the other end of the pre-stress spring is fixedly connected to the sealing pad; when the pre-stress spring is in a natural state, the sealing pad slides into the sealing groove and seals the bottom inner hole of the guide sleeve; after the pre-stress spring is compressed The sealing pad slides into the storage cavity, and the bottom inner hole of the guide sleeve is opened; the rotating sleeve is arranged above the bottom plate of the sealing box and close to the outer bottom of the guide sleeve in a manner that it can rotate and move parallel to the horizontal movement direction of the sealing pad, and the rotating rod passes through the rotating sleeve and slides with the rotating sleeve; a strip hole is arranged in the vertical direction at the lower part of the other side of the guide sleeve, and a guide groove is vertically arranged at the lower part of the other side wall of the guide cap; one end of the rotating rod is hinged to the side of the sealing pad close to the preload spring, and the other end of the rotating rod passes through the strip hole on the guide sleeve and corresponds to the guide groove on the guide cap.

[0011] As a preferred scheme of the present invention, the hemostatic pressure component also includes a horizontal limit sleeve, a horizontal driving rod, a pre-tensioning spring, an air nozzle, a support rod and a rotating arm; the horizontal limit sleeve is horizontally arranged, one end of the horizontal limit sleeve is fixed on the inner wall of the sealing box, one end of the horizontal driving rod is inserted into the horizontal limit sleeve and slidably cooperates with the inner wall of the horizontal limit sleeve, the pre-tensioning spring is arranged in the horizontal limit sleeve, one end of the pre-tensioning spring is connected to the side of the horizontal limit sleeve close to the inner wall of the sealing box, the other end of the pre-tensioning spring is connected to one end of the horizontal driving rod, the air nozzle is installed on the other end of the horizontal driving rod, and the air nozzle corresponds to the limit groove on the guide sleeve; a second groove is arranged at the middle bottom of the horizontal driving rod, the support rod is horizontally arranged, one end of the support rod is fixed on the inner wall of the sealing box, the rotating arm is sleeved on the support rod and rotatably cooperates with the support rod, the top end of the rotating arm extends to the second groove at the bottom of the horizontal driving rod, and the lower end of the rotating arm corresponds to the limit groove on the guide sleeve.

[0012] As a preferred embodiment of the present invention, the hemostatic pressure component also includes a motor, a lifting cylinder and a horizontal telescopic cylinder; the output shaft of the motor is vertically upward, the lifting cylinder is fixedly connected to the power output shaft of the motor, the piston rod of the lifting cylinder is vertically upward, the horizontal telescopic cylinder is fixedly connected to the top end of the piston rod of the lifting cylinder, the piston rod of the horizontal telescopic cylinder extends horizontally, the extrusion cylinder is fixedly connected to the end of the piston rod of the horizontal telescopic cylinder, and the piston rod of the extrusion cylinder is vertically downward.

[0013] As a preferred solution of the present invention, a cylindrical hole is provided at the top center of the movable base, a clamping column is rotatably installed in the cylindrical hole, the longitudinal section of the clamping column is a L-shaped cylinder, the bottom of one end of the support arm is fixedly connected to the top of the clamping column, and the support arm is rotatably connected to the movable base through the clamping column.

[0014] As a preferred solution of the present invention, a first groove is provided on the upper part of the movable seat and located in the rear half of the arc-shaped groove, and a supporting mechanism is installed in the first groove; the supporting mechanism includes a fan-shaped airbag installed in the first groove, one side of the fan-shaped airbag is connected to a ventilation pipe, a one-way valve is installed on the ventilation pipe, one end of the ventilation pipe away from the fan-shaped airbag extends from the side wall of the movable seat and is connected to an inflatable ball, the fan-shaped airbag is connected to the inflatable ball via the ventilation pipe, the upper part of the fan-shaped airbag is in contact with the bottom of the rear half of the silicone pad, and the bottom of the front half of the silicone pad is connected to the inner wall of the arc-shaped groove.

[0015] As a preferred embodiment of the present invention, the hemodialysis fixation and hemostasis device also includes a pipeline anti-pressure mechanism, which includes an elastic bellows, a fixed clamp and a mounting tube that can be clamped on the bed guardrail. The fixed clamp is fixedly arranged at the front end of the movable seat and close to the arc groove. One end of the elastic bellows is clamped on the fixed clamp, and the other end of the elastic bellows is connected to the mounting tube. The bottom of the mounting tube is axially arranged with an opening.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The hemodialysis fixation and hemostasis device is provided with a base and a rotating shaft. The patient places the forearm undergoing hemodialysis on the silicone pad of the movable seat, and uses the inner wall of the arc-shaped groove to position the patient's forearm. The bottom of the movable seat is rotatably connected to the base through the rotating shaft. When the base is placed on the bed, the movable seat can rotate relative to the base via the rotating shaft. The clamping block at the bottom of the movable seat is clamped in the clamping groove and slidably cooperates with the clamping groove, so that the movable seat can carry the patient's forearm to move left and right while positioning the forearm, so as to exercise the upper arm and shoulder muscles and relieve the patient's arm fatigue.

[0018] 2. The hemodialysis fixation and hemostasis device is provided with a hemostasis auxiliary mechanism. After the dialysis is completed, the bottom of the guide sleeve in the hemostasis pressure component is directly opposite to the arteriovenous fistula puncture point, and the lifting cylinder is started to adjust the upper and lower positions of the hemostasis pressure component. Then, after the puncture needle is removed from the patient's forearm, the controller immediately starts the squeezing cylinder, and the piston rod of the squeezing cylinder extends downward, pushing the guide cap in the guide sleeve downward, so that the bottom of the lowest guide cap extends downward from the bottom of the guide sleeve. At the same time, gas is injected into the airbag through the air nozzle synchronously, and the airbag expands to drive the hemostatic silicone pad at the bottom to press on the arteriovenous puncture point, press the needle port to stop bleeding, and keep the silicone pressure block stable to achieve the effect of auxiliary pressing and stopping bleeding on the two needle ports on the patient's forearm, replacing the manual pressing of medical staff. The pressure in the airbag can be detected by the sensor, and the pressing force on the arteriovenous puncture point can be adjusted at any time. After pressing for a certain period of time, the controller controls the air nozzle to discharge part of the gas, and checks the reduced pressure value through the pressure sensor, thereby reducing the pressing force on the arteriovenous puncture point. Especially for the elderly, patients with artificial blood vessels or those who have just started dialysis and have difficulty in controlling the time, because the pressure requirements for the arteriovenous puncture points after dialysis are still relatively high. If the pressure is relaxed too early, bleeding will occur, and if the pressure is relaxed too late, it will easily block the blood vessels.

[0019] 3. The hemodialysis fixation and hemostasis device is provided with a supporting mechanism. When the patient switches from a lying position to a sitting position, the inflatable ball is pressed multiple times to inflate the inflatable ball into the fan-shaped airbag through the ventilation tube. The inflation of the fan-shaped airbag pushes the silicone pad above to move upward, and the forearm placed in the arc groove is lifted up near the elbow, thereby achieving the positioning effect of the patient's forearm to be switched according to the changes in the patient's body position during the hemodialysis process, thereby maintaining the comfort of the patient's arm.

[0020] 4. The hemodialysis fixation and hemostasis device is provided with an adjustment mechanism. Since the position of the arteriovenous fistula puncture needle port on the patient's forearm is not fixed, before removing the puncture needle, the medical staff drives the screw to rotate through the screw driving mechanism. The screw drives the movable base to move forward and backward through the screw hole, and the movable base drives the support arm to move forward and backward. The position of the support arm is then rotated so that the bottom of the guide sleeve in the hemostasis pressure component is opposite to the arteriovenous fistula puncture point, thereby increasing the flexibility of the hemostatic silicone pad in pressing the needle port.

[0021] 5. The hemodialysis fixation and hemostasis device is provided with a pipeline anti-pressure mechanism, so that the pipeline connected to the puncture needle on the patient's forearm passes through the elastic bellows from the front side of the movable seat or is inserted into the elastic bellows through the axial through seam thereon, and the pipeline passing through the elastic bellows is connected to the dialyzer. The dialysis pipeline is pulled by the elastic bellows, so that the pipeline can be extended from the arc groove and directly protected by the elastic bellows, and the installation pipe is put on the guardrail at the edge of the bed through the bottom opening to position the elastic bellows, which can avoid the patient's mis-pressure causing the pipeline to cause blood circulation blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a hemodialysis fixation and hemostasis device;

[0023] Figure 2 It is a structural schematic diagram of a hemodialysis fixation and hemostasis device without a pipeline anti-pressure mechanism;

[0024] Figure 3 It is a structural schematic diagram of a supporting mechanism in a hemodialysis fixation and hemostasis device;

[0025] Figure 4 It is a schematic diagram of the structure of the fan-shaped airbag after inflation;

[0026] Figure 5 It is a schematic diagram of the structure of the base;

[0027] Figure 6 It is a schematic diagram of the structure of the hemostasis auxiliary mechanism;

[0028] Figure 7 The internal structure of the hemostatic pressure mechanism of the sealing plate sealing the inner hole at the bottom of the guide sleeve is shown in FIG. Figure 1 ;

[0029] Figure 8 It is a structural schematic diagram of the bottom plate of the sealing box;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the bottom plate of the sealing box;

[0031] Fig.10 This is a schematic diagram of the structure in which the guide sleeve is installed on the bottom plate of the sealing box;

[0032] Fig.11 It is a structural schematic diagram of the guide sleeve;

[0033] Fig.12 It is a schematic diagram of the structure of the guide cap;

[0034] Fig.13 The internal structure of the hemostatic pressure mechanism of the sealing plate sealing the inner hole at the bottom of the guide sleeve is shown in FIG. Figure 2 ;

[0035] Fig.14 It is a structural schematic diagram of a sealing pad plate inserted into a limiting groove at the bottom of a guide sleeve and sealing an inner hole at the bottom of the guide sleeve;

[0036] Fig.15 is a schematic diagram of the internal structure of the hemostatic pressure mechanism in which the sealing pad slides into the receiving cavity;

[0037] Fig.16 It is a schematic diagram of the structure of the cooperation among the guide rod, the spherical sliding sleeve, the rotating sleeve and the rotating rod;

[0038] Fig.17 It is a schematic diagram of the structure in which the guide push block on the guide cap drives the rotating arm to connect the gas nozzle with the gas conduit;

[0039] Fig.18 It is a schematic diagram of the structure of the coordination of a horizontal limit sleeve, a horizontal driving rod, a pre-tension spring, an air nozzle, a support rod and a rotating arm.

[0040] In the figure: 1-movable seat; 11-arc groove; 12-silicone pad; 13-block; 14-ball; 15-first groove; 2-base; 21-first bearing; 22-rotating shaft; 23-slot; 3-adjusting mechanism; 31-first fixed block; 32-second fixed block; 33-screw; 34-second bearing; 35-screw drive mechanism; 4-hemostasis auxiliary mechanism; 41-movable base; 411-cylindrical hole; 412-blocking column; 42-support arm; 43-lifting cylinder; 44-hemostasis pressure member; 441-sealing box; 4411-circular through hole; 4412-storage cavity; 4413-guide groove; 442-guide sleeve; 4421-limiting groove; 4422-sealing groove; 4423-strip hole; 443-guide cap; 4431-gas conduit; 4432-guide Push block; 4433—guide slide; 444—air bag; 445—extrusion cylinder; 446—hemostatic silicone pad; 447—sealing plate; 448—preload spring; 449—moving sleeve; 45—screw hole; 460—rotating rod; 461—horizontal limit sleeve; 462—horizontal driving rod; 4621—second groove; 4622—limit block; 463—preload spring; 464—air nozzle; 465—support rod; 466—rotating arm; 467—motor; 468—lifting cylinder; 469—horizontal telescopic cylinder; 470—guide rod; 471—spherical sleeve; 5—support mechanism; 51—fan-shaped air bag; 52—ventilation pipe; 53—one-way valve; 54—inflatable ball; 6—pipeline anti-pressure mechanism; 61—elastic bellows; 62—fixing clamp; 63—installation pipe; 64—opening. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with embodiments and drawings.

[0042] like Figure 1 As shown, a hemodialysis fixation and hemostasis device comprises a movable seat 1, a base 2, an adjustment mechanism 3, a hemostasis auxiliary mechanism 4, a support mechanism 5 and a pipeline anti-pressure mechanism 6. The movable seat 1 is located above the base 2. An arc groove 11 is provided on the upper surface of the movable seat 1 along the front-to-back direction, and a silicone pad 12 is installed in the arc groove 11. Figure 2-Figure 4As shown, during dialysis, the patient's forearm is placed on the arc groove 11, and the silicone pad 12 increases the comfort of the patient's forearm. Two adjustment mechanisms 3 are installed on the left or right wall of the movable seat 1, one in front and one in the back. In this embodiment, the two adjustment mechanisms 3 are installed on the left side of the movable seat 1. The front side refers to the side close to the wrist when in use, and the back side refers to the side close to the upper arm when in use. A hemostatic auxiliary mechanism 4 is installed on the adjustment mechanism 3. By adjusting the positions of the front and rear adjustment mechanisms 3, the hemostatic pressure member 44 on the hemostatic auxiliary mechanism 4 corresponds to the patient's arteriovenous puncture point. After the needle is removed, the hemostatic silicone pad 446 can be accurately pressed on the arteriovenous puncture point. A rotating shaft 22 is installed near the rear side of the base 2 through a first bearing 21. The bottom of the movable seat 1 is fixedly connected to the top of the rotating shaft 22 near the rear side, and the movable seat 1 is rotatably connected to the base 2 via the rotating shaft 22. A clamping block 13 is connected to the bottom of the movable seat 1 near the front end, and a ball 14 is rotatably installed at the bottom of the clamping block 13. An arc-shaped clamping groove 23 is provided on the upper surface of the base 2 near the front end. Figure 5 As shown, the arc-shaped slot 23 is a curved groove formed with the axis of the rotating shaft 22 as the center of the circle, the block 13 is stuck in the slot 23 and forms a sliding fit with the slot 23, and the bottom of the ball 14 contacts the bottom surface of the slot 23. When the base 2 is placed on the bed, the movable seat 1 can rotate relative to the base 2 via the rotating shaft 22, so that the movable seat 1 can carry the patient's forearm to move left and right while positioning the forearm, so as to move the upper arm and shoulder muscles and relieve the fatigue of the patient's arm. The block 13 is stuck in the slot 23 and forms a sliding connection with the slot 23, and the bottom of the ball 14 contacts the bottom surface of the slot 23. The ball 14 rolls relative to the slot 23 in the slot 23, reducing the friction between the block 13 and the inner wall of the slot 23, and supporting the movable seat 1 to slide smoothly relative to the base 2.

[0043] Wherein, the adjustment mechanism 3 includes a first fixed block 31, a second fixed block 32 and a screw 33. The first fixed block 31 is installed on the side wall of the movable seat 1 and is close to the end, and the second fixed block 32 is installed on the side wall of the movable seat 1 and is close to the middle; a screw 33 is connected between the adjacent first fixed blocks 31 and the second fixed blocks 32, and both ends of the screw 33 are rotatably matched with the first fixed block 31 and the second fixed block 32 through a second bearing 34; the front end of the screw 33 in the front adjustment mechanism 3 passes through the first fixed block 31 on the front side, and the rear end of the screw 33 in the rear adjustment mechanism 3 passes through the first fixed block 31 on the rear side. The front end of the screw 33 on the front side and the rear end of the screw 33 on the rear side are both connected to a screw driving mechanism 35. The screw driving mechanism 35 can use either a manual knob or a motor. In the present embodiment, a manual knob is used, such as Figure 2As shown, by manually turning the knob, the front and rear screws 33 are driven to rotate. When the screws 33 rotate, the movable base 41 and the supporting arm 42 thereon are driven to move forward and backward together, thereby adjusting the positions of the corresponding front and rear hemostatic pressure components 44 thereon, so that the hemostatic pressure components 44 can better correspond to the arteriovenous puncture points.

[0044] The hemostasis auxiliary mechanism 4 includes a movable base 41, a support arm 42, a lifting cylinder 43 and a hemostasis pressure member 44. Figure 6 As shown. A screw hole 45 is provided in the middle of the movable base 41, and the movable base 41 is sleeved on the corresponding screw rod 33 through the screw hole 45. When the screw rod 33 rotates, the movable base 41 thereon can be driven to move forward and backward along the side wall of the movable base 1. One end of the support arm 42 is rotatably connected to the top of the movable base 41, and the other end of the support arm 42 is located above the arc groove 11. The lifting cylinder 43 is installed on the supporting arm 42 and close to the other end of the supporting arm 42. The piston rod of the lifting cylinder 43 vertically passes through the supporting arm 42 downward and slidably cooperates with the supporting arm 42. The hemostatic pressure component 44 is connected to the bottom end of the piston rod of the lifting cylinder 43. The lifting cylinder 43 can drive the hemostatic pressure component 44 up and down. In this embodiment, a cylindrical hole 411 is provided at the center of the top of the movable base 41, and a clamping column 412 is rotatably installed in the cylindrical hole 411. The longitudinal section of the clamping column 412 is a L-shaped cylinder. The bottom of one end of the support arm 42 is fixedly connected to the top of the clamping column 412. The support arm 42 is rotatably connected to the movable base 41 through the clamping column 412, so that the support arm 42 can be rotated relative to the movable base 41. When the hemostatic pressure component 44 is not in use, the support arm 42 is rotated 90° to one side to prevent the support arm 42 from extending to block the field of view above the forearm and affect the puncture of the puncture needle.

[0045] The hemostatic pressure member 44 includes a sealing box 441 and a guide sleeve 442, a guide cap 443, an air bag 444 and an extrusion cylinder 445 arranged in the sealing box 441. Figure 7 The top of the sealing box 441 is fixedly connected to the bottom of the piston rod of the lifting cylinder 43, and a circular through hole 4411 is provided on the bottom plate of the sealing box 441. Figure 8 and Fig. 9 As shown, the guide sleeve 442 is vertically arranged on the bottom plate of the sealing box 441, the bottom of the guide sleeve 442 is inserted into the circular through hole 4411, and the bottom end of the guide sleeve 442 is parallel to the bottom end of the circular through hole 4411, as shown in FIG. Fig.10 A limiting groove 4421 is provided on one side of the guide sleeve 442 in the vertical direction and runs through the guide sleeve 442. Fig.11 The guide cap 443 is a cover structure with an open bottom. A gas conduit 4431 is arranged above the same side wall of the guide cap 443, and a guide push block 4432 is arranged below. The horizontal extension length of the guide push block 4432 is greater than the length of the gas conduit 4431. Fig.12 As shown. A plurality of guide caps 443 are arranged in sequence from bottom to top in the guide sleeve 442. The outer wall of the guide cap 443 contacts the inner wall of the guide sleeve 442 and can slide relative to each other when subjected to vertical force. In this embodiment, three guide caps 443 are arranged in the guide sleeve 442. The gas conduit 4431 and the guide push block 4432 on the guide cap 443 are both located in the limit groove 4421 of the guide sleeve 442, as shown in FIG. Fig.13 As shown. An air bag 444 is arranged in each guide cap 443, and the gas conduit 4431 on the guide cap 443 is communicated with the air bag 444 in the guide cap 443, and a hemostatic silicone pad 446 is arranged at the bottom of the air bag 444. The extrusion cylinder 445 is arranged above the guide sleeve 442, and the piston rod of the extrusion cylinder 445 extends vertically downward and toward the top of the guide cap 443. When the piston rod of the extrusion cylinder 445 extends downward, it can push the guide cap 443 in the guide sleeve 442 to move downward, so that the air bag 444 in the lowest guide sleeve 442 and the hemostatic silicone pad 446 at the bottom of the air bag 444 are close to the arterial and venous puncture point, thereby applying pressure to the arterial and venous puncture point to stop bleeding.

[0046] The hemostatic pressure member 44 further includes a sealing pad 447, a pre-compression spring 448, a rotating sleeve 449 and a rotating rod 460. Figure 7 The guide sleeve 442 is provided with a sealing groove 4422 near the bottom, and the sealing groove 4422 is provided along the circumferential direction of the inner wall of the guide sleeve 442. Fig.10 As shown, a storage chamber 4412 is provided in the bottom plate of the sealing box 441, which is horizontally corresponding to and communicated with the sealing groove 4422. The sealing gasket 447 is slidably matched with the sealing groove 4422 and the storage chamber 4412. One end of the pre-stress spring 448 is fixedly connected to the side wall of the storage chamber 4412 away from the sealing groove 4422, and the other end of the pre-stress spring 448 is fixedly connected to the sealing gasket 447. The pre-stress spring 448 applies a pre-stress stress to the sealing gasket 447, pushing the sealing gasket 447 into the sealing groove 4422 of the guide sleeve 442. When the pre-stress spring 448 is in a natural state, the sealing gasket 447 slides into the sealing groove 4422 and seals the bottom inner hole of the guide sleeve 442 (that is, under the pre-stressing action of the pre-stress spring 448, the sealing gasket 447 is pushed into the sealing groove 4422 at the bottom of the guide sleeve 442, as shown in FIG. 2 ). Figure 7 and Fig.14 After the preload spring 448 is compressed, the sealing plate 447 slides into the receiving chamber 4412, and the inner hole at the bottom of the guide sleeve 442 is opened (that is, when the sealing plate 447 is subjected to an outward pulling force, the sealing plate 447 slides out of the sealing groove 4422 at the bottom of the guide sleeve 442 and slides into the receiving chamber 4412, and at this time, the preload spring 448 is compressed). Fig.15The rotating sleeve 449 is arranged above the bottom plate of the sealing box 441 and close to the outer bottom of the guide sleeve 442 in a manner that it can rotate and move parallel to the horizontal movement direction of the sealing pad 447. The rotating rod 460 passes through the rotating sleeve 449 and slides with the rotating sleeve 449. In this embodiment, a guide rod 470 is arranged above the bottom plate of the sealing box 441. The guide rod 470 is parallel to the horizontal movement direction of the sealing pad 447. A spherical sliding sleeve 471 is provided on the sliding sleeve of the guide rod 470. The rotating sleeve 449 is connected to the spherical sliding sleeve 471 in a rotatable manner, as shown in FIG. Fig.16 The lower half of the other side of the guide sleeve 442 is provided with a strip hole 4423 in the vertical direction, as shown in FIG. Fig.11 As shown, the limiting groove 4421 and the strip hole 4423 are distributed on the guide sleeve 442 at an angle of 90 degrees. A guide slot 4433 is vertically arranged on the lower half of the other side wall of the guide cap 443, and a circular arc transition is formed between the top of the guide slot 4433 and the outer wall of the guide cap 443, as shown in FIG. Fig.12 As shown, the guide push block 4432 and the guide slot 4433 are distributed on the guide cap 443 at an angle of 90 degrees. The bottom end of the rotating rod 460 is hinged to the side of the sealing pad 447 close to the preload spring 448, and the top end of the rotating rod 460 passes through the strip hole 4423 on the guide sleeve 442 and corresponds to the guide slot 4433 on the guide cap 443. In this embodiment, a guide slot 4413 is provided on the bottom plate of the sealing box 441 and located above the storage cavity 4412 and close to the guide sleeve 442. The bottom of the sealing pad 447 that moves horizontally passes through the guide slot 4413, and the guide slot 4413 can be used to guide the bottom of the rotating rod 460 when it moves toward the side of the preload spring 448.

[0047] The hemostatic pressure member 44 further includes a horizontal limit sleeve 461, a horizontal driving rod 462, a pretension spring 463, an air nozzle 464, a support rod 465 and a rotating arm 466. Fig.13 , Fig.17 and Fig.18The horizontal limit sleeve 461 is horizontally arranged above the bottom plate of the sealing box 441, one end of the horizontal limit sleeve 461 is fixed on the inner wall of the sealing box 441, the other end of the horizontal limit sleeve 461 points to the center of the guide sleeve 442, one end of the horizontal driving rod 462 is inserted into the horizontal limit sleeve 461 and slides with the inner wall of the horizontal limit sleeve 461, the pre-tension spring 463 is arranged in the horizontal limit sleeve 461, one end of the pre-tension spring 463 is connected to the side of the horizontal limit sleeve 461 close to the inner wall of the sealing box 441, the other end of the pre-tension spring 463 is connected to one end of the horizontal driving rod 462, and the air nozzle 464 is installed on the other end of the horizontal driving rod 462. The air nozzle 464 corresponds to the limiting groove 4421 on the guide sleeve 442; a second groove 4621 is provided at the middle bottom of the horizontal driving rod 462, the support rod 465 is provided horizontally, one end of the support rod 465 is fixed on the inner wall of the sealing box 441, the axis of the support rod 465 is perpendicular to the axis of the horizontal driving rod 462, the rotating arm 466 is sleeved on the support rod 465 and rotates with the support rod 465, the top end of the rotating arm 466 extends into the second groove 4621 at the bottom of the horizontal driving rod 462, and the bottom end of the rotating arm 466 corresponds to the limiting groove 4421 on the guide sleeve 442. In this embodiment, a limiting block 4622 is fixedly provided on the horizontal driving rod 462 and located between the horizontal limiting sleeve 461 and the second groove 4621. When the pretension spring 463 is in a natural pretension state, the pretension spring 463 pulls the horizontal driving rod 462 to slide into the horizontal limiting sleeve 461 , and when the limiting block 4622 blocks the right end of the horizontal limiting sleeve 461 , the horizontal driving rod 462 stops.

[0048] When the piston rod of the extrusion cylinder 445 drives the guide cap 443 in the guide sleeve 442 to move downward, the guide groove 4433 on the lowest guide cap 443 pushes the top of the rotating rod 460 to rotate downward, and the bottom end of the rotating rod 460 drives the sealing pad 447 to slide into the storage chamber 4412, and the preload spring 448 is compressed. At this time, the bottom end hole in the guide sleeve 442 is opened, and the piston rod of the extrusion cylinder 445 drives the guide cap 443 in the guide sleeve 442 to continue to move downward. The lowest guide cap 443 The bottom of the horizontal driving rod 462 extends out of the bottom of the guide sleeve 442. At the same time, the guide push block 4432 on the lowest guide cap 443 contacts the bottom of the rotating arm 466 and pushes the rotating arm 466 to rotate. The top of the rotating arm 466 located in the second groove 4621 pushes the horizontal driving rod 462 to slide toward the lowest guide cap 443. The gas nozzle 464 on the horizontal driving rod 462 presses against the gas conduit 4431 on the lowest guide cap 443. The gas nozzle 464 and the gas conduit 4431 are connected to each other by squeezing. Fig.17 At this moment, the top of the rotating rod 460 has been rotated to the lowest position, as shown Fig.15As shown, the air conduit 4431 is inflated through the air nozzle 464, and then the air bag 444 in the bottom guide cap 443 is inflated. The air bag 444 expands and drives the bottom and the hemostatic silicone pad 446 on the bottom to move downward together and press on the arteriovenous puncture point. A pressure sensor can be set at the outlet end of the air nozzle 464 to detect the size of the pressure in the air bag 444 at any time, and adjust the pressing force on the arteriovenous puncture point at any time. The pressure sensor, timer and controller can be combined. After the timer counts to a certain time, the controller controls the air nozzle 464 to discharge part of the gas, and the pressure sensor detects the reduced pressure value, thereby reducing the pressing force of the arteriovenous puncture point. After pressing for a period of time, the pressing force needs to be reduced. Especially for the elderly, artificial blood vessels or patients who are not good at grasping the time at the beginning of dialysis, because the pressing requirements for the arteriovenous puncture point after dialysis are still relatively high, the pressing force is loosened too early to cause bleeding, and the pressing force is loosened too late to easily block the blood vessels.

[0049] After hemostasis is completed, part of the gas in the airbag 444 is discharged through the air nozzle 464, the airbag 444 contracts, and the bottom of the airbag 444 and the hemostatic silicone pad 446 on the bottom leave the arteriovenous puncture point together. The lifting cylinder 43 then drives the hemostatic pressure component 44 to rise as a whole, and the support arm 42 is rotated to make the hemostatic pressure component 44 leave the top of the forearm, and the patient's arm leaves the silicone pad 12. The medical staff pulls down the lowest guide cap 443 to separate the lowest guide cap 443 from the bottom of the guide sleeve 442. When the lowest guide cap 443 separates from the guide sleeve 442, the top of the rotating rod 460 slides out from the top of the guide slot 4433 of the guide cap 443. Under the restoring force of the pre-stressed spring 448, the pre-stressed spring 448 pushes the sealing pad 447 and the bottom of the rotating rod 460 connected thereto, and under the guiding action of the strip hole 4423 of the guide sleeve 442, the top of the rotating rod 460 slides into the guide slot 4433 of the upper guide cap 443. At the same time, when the lowest guide cap 443 is pulled down, the guide push block 4432 on the lowest guide cap 443 is separated from the bottom of the rotating arm 466, and the horizontal driving rod 462 is pulled back into the horizontal limiting sleeve 461 under the action of the pre-tension spring 463, and the gas nozzle 464 is separated from the gas conduit 4431 on the lowest guide cap 443, and the guide push block 4432 and the gas conduit 4431 on the lowest guide cap 443 are moved along the limiting groove 442 on the guide sleeve 442. The guide sleeve 442 is slid out, and after the lowest guide cap 443 is separated from the bottom of the guide sleeve 442, the sealing pad 447 is pushed into the sealing groove 442 of the guide sleeve 442 by the preload spring 448 again, thereby sealing the bottom outlet of the guide sleeve 442. After the medical staff uniformly disinfects the bottom of the sealing groove 442, the bottom of the guide sleeve 442, the outer side of the sealing box 441, the arc groove 11, the silicone pad 12 and other components, the hemodialysis fixation and hemostasis device can be reused.

[0050] The hemostatic pressure member 44 further includes a motor 467, a lifting cylinder 468 and a horizontal telescopic cylinder 469. Figure 7 and Fig.15 As shown. The output shaft of the motor 467 is vertically upward, the lifting cylinder 468 is fixedly connected to the power output shaft of the motor 467, the piston rod of the lifting cylinder 468 is vertically upward, the horizontal telescopic cylinder 469 is fixedly connected to the top of the piston rod of the lifting cylinder 468, the piston rod of the horizontal telescopic cylinder 469 is horizontally extended, and the extrusion cylinder 445 is fixedly connected to the end of the piston rod of the horizontal telescopic cylinder 469. The lifting cylinder 468 and the extrusion cylinder 445 are combined. When the piston rod of the extrusion cylinder 445 reaches the limit and cannot push the next guide cap 443 downward, the piston rod of the lifting cylinder 468 can be retracted downward, so that the horizontal telescopic cylinder 469 and the extrusion cylinder 445 thereon move downward together, so that the downward moving distance of the piston rod of the extrusion cylinder 445 can be increased, and the height of the entire sealing box 441 can also be shortened. After the guide cap 443 in the guide tube 442 is used up, the piston rod of the extrusion cylinder 445 is retracted upward, and the piston rod of the lifting cylinder 468 is extended upward, so that the horizontal telescopic cylinder 469 and the extrusion cylinder 445 thereon are lifted and moved upward together, so that the entire extrusion cylinder 445 is moved to the top of the guide tube 442, and the piston rod of the horizontal telescopic cylinder 469 is retracted, and the motor 467 is started to make the extrusion cylinder 445 leave the guide tube 442 to provide space for re-adding the guide sleeve 442. At this time, it is only necessary to open the top plate of the sealing box 441 to add a new guide cap 443 into the guide sleeve 442 again.

[0051] A first groove 15 is provided at the upper part of the movable seat 1 and at the rear half of the arc groove 11. A support mechanism 5 is installed in the first groove 15. The support mechanism 5 is used to support the patient's forearm when the patient is sitting or lying down. The support mechanism 5 includes a fan-shaped air bag 51 installed in the first groove 15. Figure 3 As shown, a vent pipe 52 is connected to one side of the fan-shaped air bag 51, and a one-way valve 53 is installed on the vent pipe 52. One end of the vent pipe 52 away from the fan-shaped air bag 51 extends from the right side wall of the movable seat 1 and is connected to an inflatable ball 54. Figure 1As shown, the fan-shaped airbag 51 is connected to the inflatable ball 54 through the ventilation tube 52, the upper part of the fan-shaped airbag 51 contacts the bottom of the rear half of the silicone pad 12, and the bottom of the front half of the silicone pad 12 is connected to the inner wall of the arc groove 11. An air inlet valve is provided at the bottom of the inflatable ball 54. By pressing the inflatable ball 54 manually or automatically for multiple times, the inflatable ball 54 is inflated into the fan-shaped airbag 51 through the ventilation tube 52, and the fan-shaped airbag 51 is inflated and expanded. The bottom of the rear half of the silicone pad 12 above the fan-shaped airbag 51 contacts the inner wall of the arc groove 11, and the front half of the silicone pad 12 is connected to the inner wall of the arc groove 11. The expansion of the fan-shaped airbag 51 pushes the upper silicone pad 12 upward, and lifts the forearm placed in the arc groove 11 near the elbow, so as to switch the positioning effect of the patient's forearm according to the changes in the patient's body position during the hemodialysis process, and maintain the comfort of the patient's arm. An exhaust valve is provided near the outer side of the fan-shaped airbag 51, and the gas in the fan-shaped airbag 51 can be exhausted at any time through the exhaust valve to adapt to the needs of changes in body position.

[0052] The pipeline anti-pressure mechanism 6 is used for traction and pressure prevention of the blood circulation pipeline. The pipeline anti-pressure mechanism 6 includes an elastic bellows 61, a fixed clamp ring 62 and a mounting tube 63 that can be clamped on the bed guardrail. Figure 1 As shown, a fixing clamp ring 62 is fixedly arranged at the front end of the movable seat 1 and close to the arc groove 11, one end of the elastic bellows 61 is clamped on the fixing clamp ring 62, and the other end of the elastic bellows 61 is connected to the mounting tube 63, and an opening 64 is arranged at the bottom of the mounting tube 63 along the axial direction. The pipeline extends forward from the top of the arc groove 11 and directly passes through the elastic bellows 61. If it is inconvenient for the pipeline to pass through the elastic bellows 61, an axially penetrating slit can be arranged at the top of the elastic bellows 61 along the axial direction, and the top of the elastic bellows 61 can be opened to both sides through the slit, and then the catheter is placed in the elastic bellows 61. The telescopic length range of the elastic bellows 61 meets the requirements of the movable seat 1 rotating relative to the base 2. The mounting tube 63 is sleeved on the guardrail at the edge of the bed through the opening 64 at the bottom, and the elastic bellows 61 is positioned so that the elastic bellows 61 is located on the side of the movable seat 1 close to the guardrail of the bed. The elastic bellows 61 effectively protects the pipeline and can effectively prevent the catheter on the bed from being accidentally compressed, causing blood circulation blockage in the pipeline.

[0053] When the user actually uses the hemodialysis fixing and hemostasis device, firstly, the pipelines corresponding to the arteries and veins are respectively passed through the elastic bellows 61 or inserted into the elastic bellows 61 from the axially penetrating seam above the elastic bellows 61, and then one end of the elastic bellows 61 is clamped in the fixing clamp ring 62, and the puncture needle on the pipeline is inserted into the arteriovenous fistula on the patient's forearm, and the other end of the pipeline is connected to the dialyzer to form a blood circulation loop, and then the dialyzer is turned on for dialysis. The base 2 is placed on the patient's bed, the patient's forearm is placed on the silicone pad 12, and the patient's forearm is positioned with the movable seat 1 to prevent the patient's forearm from unconsciously shaking and causing the pipeline to be pulled, and then the installation tube 63 is put on the guardrail at the edge of the bed through the bottom opening 64, and the elastic bellows 61 is positioned. The dialysis pipeline is pulled by the elastic bellows 61, so that the pipeline can be extended from the arc groove 11 and directly protected by the elastic bellows 61, which can prevent the patient's mispressure from causing the pipeline blood circulation blockage. When the patient's forearm remains in one position for a long time, the patient can swing the forearm, and the forearm drives the movable seat 1 to rotate relative to the base 2 via the rotating shaft 22. The block 13 at the bottom of the movable seat 1 slides in the slot 23, so that the patient's forearm moves left and right to move the upper arm and shoulder muscles, relieving the fatigue of the patient's arm. When the patient switches from lying to sitting, the patient's forearm cannot fit the silicone pad 12. By pressing the inflatable ball 54 multiple times, the inflatable ball 54 is inflated into the fan-shaped airbag 51 through the ventilation tube 52. The fan-shaped airbag 51 is inflated and expands to push the upper silicone pad 12 upward, and the forearm placed in the arc groove 11 is lifted up near the elbow to maintain the comfort of the patient's arm. After the dialysis is completed, the medical staff drives the screw to rotate through the screw driving mechanism 35 (which can be driven by a motor or by turning a knob by hand), and the screw 33 drives the movable base 41 to move forward and backward through the screw hole 45, and the movable base 41 drives the support arm 42 to move forward and backward, and then the position of the support arm 42 is rotated so that the bottom of the guide sleeve 442 in the hemostatic pressure component 44 is directly opposite the arteriovenous fistula puncture point, and the lifting cylinder 43 is started to adjust the upper and lower positions of the hemostatic pressure component 44, and then the puncture needle is removed from the patient's arm, and the controller immediately starts the squeezing cylinder 445, and the piston rod of the squeezing cylinder 445 extends downward, pushing the guide cap 443 in the guide sleeve 442 to move downward, so that the bottom of the lowest guide cap 443 extends downward from the bottom of the guide sleeve 442, and gas is injected into the air bag 444 through the air nozzle 464. The expansion of the air bag 444 drives the hemostatic silicone pad 446 at the bottom to press on the arteriovenous fistula puncture point, pressing the needle port to stop bleeding. In order to improve the response speed of the extrusion cylinder 445 and the air pump, a plurality of detectors for checking the puncture needle can be set at the bottom of the sealing box 441 near the bottom of the guide sleeve 442. The moment the puncture needle is pulled out from the arteriovenous fistula puncture point of the arm, the detector senses it, and the controller immediately starts the extrusion cylinder 445 and synchronously starts the air pump to inflate the airbag 444 through the air nozzle 464 and the gas duct 4431 to achieve rapid hemostasis.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A hemodialysis fixation and hemostasis device, characterized in that: The invention comprises a movable seat (1) and a base (2), wherein the movable seat (1) is located above the base (2), an arc groove (11) is provided on the upper surface of the movable seat (1) along the front-to-back direction, a silicone pad (12) is installed in the arc groove (11), two adjustment mechanisms (3) are installed one in front of the other on the left or right side wall of the movable seat (1), and a hemostasis auxiliary mechanism (4) is installed on the adjustment mechanism (3); a rotating shaft (22) is installed near the rear side of the base (2) through a first bearing (21), and the bottom of the movable seat (1) is provided with a plurality of adjustment mechanisms (3). The movable seat (1) is fixedly connected to the top of the rotating shaft (22) near the rear side, and the movable seat (1) is rotatably connected to the base (2) via the rotating shaft (22); the bottom of the movable seat (1) is connected to a clamping block (13) near the front end, and a ball (14) is rotatably mounted on the bottom of the clamping block (13); an arc-shaped clamping groove (23) is provided on the upper surface of the base (2) near the front end, and the clamping block (13) is clamped in the clamping groove (23) and forms a sliding fit with the clamping groove (23), and the bottom of the ball (14) contacts the bottom surface of the clamping groove (23).

2. A hemodialysis fixation and hemostasis device according to claim 1, characterized in that: The adjusting mechanism (3) comprises a first fixing block (31), a second fixing block (32) and a screw (33); the first fixing block (31) is mounted on the side wall of the movable seat (1) and is close to the end, and the second fixing block (32) is mounted on the side wall of the movable seat (1) and is close to the middle; a screw (33) is connected between adjacent first fixing blocks (31) and second fixing blocks (32); both ends of the screw (33) are rotatably matched with the first fixing block (31) and the second fixing block (32) through second bearings (34); the front end of the screw (33) in the front adjusting mechanism (3) passes through the first fixing block (31) on the front side, and the rear end of the screw (33) in the rear adjusting mechanism (3) passes through the first fixing block (31) on the rear side, and the front end of the screw (33) on the front side and the rear end of the screw (33) on the rear side are both connected to a screw driving mechanism (35).

3. A hemodialysis fixation and hemostasis device according to claim 2, characterized in that: The hemostasis auxiliary mechanism (4) comprises a movable base (41), a supporting arm (42), a lifting cylinder (43) and a hemostasis pressure member (44); a screw hole (45) is provided in the middle of the movable base (41), and the movable base (41) is sleeved on the corresponding screw rod (33) through the screw hole (45), and when the screw rod (33) rotates, the movable base (41) thereon can be driven to move forward and backward along the side wall of the movable seat (1); one end of the supporting arm (42) is rotatably connected to the top of the movable base (41), and the other end of the supporting arm (42) is located above the arc groove (11); the lifting cylinder (43) is installed on the supporting arm (42) and is close to the other end of the supporting arm (42), the piston rod of the lifting cylinder (43) vertically passes through the supporting arm (42) downward and slides with the supporting arm (42), and the hemostasis pressure member (44) is connected to the bottom end of the piston rod of the lifting cylinder (43).

4. A hemodialysis fixation and hemostasis device according to claim 3, characterized in that: The hemostatic pressure member (44) comprises a sealing box (441) and a guide sleeve (442), a guide cap (443), an air bag (444) and an extrusion cylinder (445) arranged in the sealing box (441); The top end of the sealing box (441) is fixedly connected to the bottom end of the piston rod of the lifting cylinder (43); a circular through hole (4411) is arranged on the bottom plate of the sealing box (441); the guide sleeve (442) is vertically arranged on the bottom plate of the sealing box (441); the bottom of the guide sleeve (442) is inserted into the circular through hole (4411); the bottom end of the guide sleeve (442) is parallel to the bottom end of the circular through hole (4411); A limiting groove (4421) is vertically provided on one side of the guide sleeve (442), which runs through the guide sleeve (442). The guide cap (443) is a cover structure with an open bottom. A gas conduit (4431) is provided above the same side wall of the guide cap (443), and a guide push block (4432) is provided below. The horizontally extended length of the guide push block (4432) is greater than the length of the gas conduit (4431). A plurality of guide caps (443) are arranged in sequence from bottom to top in the guide sleeve (442). The outer wall of the guide cap (443) contacts the inner wall of the guide sleeve (442) and can slide relatively when subjected to vertical force. The gas on the guide cap (443) The conduit (4431) and the guide push block (4432) are both located in the limiting groove (4421), and an air bag (444) is arranged in each guide cap (443). The gas conduit (4431) on the guide cap (443) is communicated with the corresponding air bag (444), and a hemostatic silicone pad (446) is arranged at the bottom of the air bag (444); the extrusion cylinder (445) is arranged above the guide sleeve (442), and the piston rod of the extrusion cylinder (445) extends vertically downward and toward the top of the guide cap (443). When the piston rod of the extrusion cylinder (445) extends downward, it can push the guide cap (443) in the guide sleeve (442) to move downward.

5. A hemodialysis fixation and hemostasis device according to claim 4, characterized in that: The hemostatic pressure member (44) further comprises a sealing pad (447), a pre-compression spring (448), a rotating sleeve (449) and a rotating rod (460); the guide sleeve (442) is provided with a sealing groove (4422) near the bottom, the bottom plate of the sealing box (441) is provided with a receiving cavity (4412) horizontally corresponding to and communicating with the sealing groove (4422), the sealing pad (447) is connected to the sealing groove (4422) and the receiving cavity (4412) 2) are slidably matched, one end of the pre-compression spring (448) is fixedly connected to the side wall of the receiving chamber (4412) away from the sealing groove (4422), and the other end of the pre-compression spring (448) is fixedly connected to the sealing pad (447). When the pre-compression spring (448) is in a natural state, the sealing pad (447) slides into the sealing groove (4422) and seals the bottom inner hole of the guide sleeve (442). After the pre-compression spring (448) is compressed, the sealing pad The plate (447) slides into the receiving chamber (4412), and the inner hole at the bottom of the guide sleeve (442) is opened; the rotating sleeve (449) is arranged above the inner bottom plate of the sealing box (441) and close to the outer bottom of the guide sleeve (442) in a manner that it can rotate and move in parallel with the horizontal movement direction of the sealing pad plate (447); the rotating rod (460) passes through the rotating sleeve (449) and slidably cooperates with the rotating sleeve (449); the guide sleeve (442) A strip hole (4423) is vertically arranged at the lower part of the other side, and a guide groove (4433) is vertically arranged at the lower part of the other side wall of the guide cap (443); one end of the rotating rod (460) is hinged to a side of the sealing pad (447) close to the preload spring (448), and the other end of the rotating rod (460) passes through the strip hole (4423) on the guide sleeve (442) and corresponds to the guide groove (4433) on the guide cap (443).

6. A hemodialysis fixation and hemostasis device according to claim 5, characterized in that: The hemostatic pressure component (44) also includes a horizontal limiting sleeve (461), a horizontal driving rod (462), a pre-tensioning spring (463), an air nozzle (464), a support rod (465) and a rotating arm (466); the horizontal limiting sleeve (461) is horizontally arranged, one end of the horizontal limiting sleeve (461) is fixed on the inner wall of the sealing box (441), one end of the horizontal driving rod (462) is inserted into the horizontal limiting sleeve (461) and slidably cooperates with the inner wall of the horizontal limiting sleeve (461), the pre-tensioning spring (463) is arranged in the horizontal limiting sleeve (461), one end of the pre-tensioning spring (463) is connected to the side of the horizontal limiting sleeve (461) close to the inner wall of the sealing box (441), and the other end of the pre-tensioning spring (463) is connected to the water The air nozzle (464) is installed on one end of the horizontal driving rod (462), and the air nozzle (464) is installed on the other end of the horizontal driving rod (462), and the air nozzle (464) corresponds to the limiting groove (4421) on the guide sleeve (442); a second groove (4621) is arranged at the middle bottom of the horizontal driving rod (462), the support rod (465) is arranged horizontally, and one end of the support rod (465) is fixed on the inner wall of the sealing box (441), and the rotating arm (466) is sleeved on the support rod (465) and rotated with the support rod (465), the top end of the rotating arm (466) extends to the second groove (4621) at the bottom of the horizontal driving rod (462), and the lower end of the rotating arm (466) corresponds to the limiting groove (4421) on the guide sleeve (442).

7. A hemodialysis fixation and hemostasis device according to claim 6, characterized in that: The hemostatic pressure component (44) also includes a motor (467), a lifting cylinder (468) and a horizontal telescopic cylinder (469); the output shaft of the motor (467) is vertically upward, the lifting cylinder (468) is fixedly connected to the power output shaft of the motor (467), the piston rod of the lifting cylinder (468) is vertically upward, the horizontal telescopic cylinder (469) is fixedly connected to the top of the piston rod of the lifting cylinder (468), the piston rod of the horizontal telescopic cylinder (469) extends horizontally, the extrusion cylinder (445) is fixedly connected to the end of the piston rod of the horizontal telescopic cylinder (469), and the piston rod of the extrusion cylinder (445) is vertically downward.

8. A hemodialysis fixation and hemostasis device according to claim 7, characterized in that: A cylindrical hole (411) is provided at the center of the top of the movable base (41), a clamping column (412) is rotatably installed in the cylindrical hole (411), the longitudinal section of the clamping column (412) is a cylindrical shape of an L-shaped column, the bottom of one end of the support arm (42) is fixedly connected to the top of the clamping column (412), and the support arm (42) is rotatably connected to the movable base (41) through the clamping column (412).

9. A hemodialysis fixation and hemostasis device according to any one of claims 1 to 8, characterized in that: A first groove (15) is provided at the upper part of the movable seat (1) and located at the rear half of the arc groove (11); a support mechanism (5) is installed in the first groove (15), and the support mechanism (5) includes a fan-shaped air bag (51) installed in the first groove (15); a ventilation pipe (52) is connected to one side of the fan-shaped air bag (51); a one-way valve (53) is installed on the ventilation pipe (52); an end of the ventilation pipe (52) away from the fan-shaped air bag (51) extends from the side wall of the movable seat (1) and is connected to an inflatable ball (54); the fan-shaped air bag (51) is connected to the inflatable ball (54) through the ventilation pipe (52); the upper part of the fan-shaped air bag (51) contacts the bottom of the rear half of the silicone pad (12); and the bottom of the front half of the silicone pad (12) is connected to the inner wall of the arc groove (11).

10. A hemodialysis fixation and hemostasis device according to claim 9, characterized in that: The invention also comprises a pipeline pressure-proof mechanism (6), the pipeline pressure-proof mechanism (6) comprising an elastic bellows (61), a fixed clamping ring (62) and a mounting tube (63) which can be clamped on the bed guardrail, the fixed clamping ring (62) being fixedly arranged at the front end of the movable seat (1) and close to the arc-shaped groove (11), one end of the elastic bellows (61) being clamped on the fixed clamping ring (62), the other end of the elastic bellows (61) being connected to the mounting tube (63), and the bottom of the mounting tube (63) being provided with an opening (64) along the axial direction.

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