Kidney blood perfusion device used before kidney ischemia

Abstract

The invention discloses a kidney blood perfusion device used before kidney ischemia, and relates to the field of perfusion devices, the kidney blood perfusion device comprises a machine shell, the side face of the machine shell is provided with a pair of fasteners, and the fasteners are used for fixing syringes respectively; the movable plate is arranged in the machine shell through a moving mechanism, and the moving mechanism can drive the movable plate to move in the machine shell; the pushing parts are arranged on the movable plate and used for pushing a piston handle in the injector, each pushing part comprises a sliding sleeve, a movable sleeve and an elastic component, the sliding sleeves are arranged on the side face of the movable plate, and the movable sleeves are inserted into the sliding sleeves in a sliding mode. The device has the advantages that manual time sequence errors in operation are avoided through double-stage strict separation, reperfusion after blood vessels are closed is ensured, a mechanical interlocking mechanism of a blocking pad and a stroke strip forcibly requires that perfusion can be started only after liquid bag expansion is completed, and the misoperation risk is completely eradicated from the hardware level; the double-stage seamless switching of liquid injection expansion and perfusion is realized, the efficiency is high, the perfusion speed of mechanical pushing injection during perfusion is more uniform, and the effect is better.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, and relates to a perfusion device, in particular to a renal blood perfusion device for pre-ischemic kidney. BACKGROUND

[0002] In the treatment of kidney injury (open, closed) or space-occupying lesions, partial nephrectomy of the injured kidney often needs to be performed. Before the operation, a renal artery balloon catheter is usually implanted in advance. During the operation, low-temperature liquid needs to be perfused through the balloon catheter, that is, pre-ischemic renal blood perfusion. Experience shows that laparoscopic or robotic partial nephrectomy assisted by low-temperature perfusion can effectively reduce intraoperative and postoperative complications, prolong renal ischemia time, and help protect renal function.

[0003] In the field of pre-ischemic kidney treatment, to achieve local protective perfusion of the kidney, the traditional method usually uses a step-by-step manual injection technique. The specific operation steps include: first, implant a balloon catheter into the blood vessel through a syringe, inflate the balloon by manually injecting normal saline to close the proximal and distal blood vessels of the renal artery and inferior vena cava, thereby establishing an isolated area; in the second step, the operator needs to replace another syringe and continuously inject normal saline to maintain local perfusion. The existing technology mostly relies on a combination of ordinary blood perfusion devices or manual syringes to complete the above process, which relies on manual control of the injection sequence and force of the syringe to achieve step-by-step operation of balloon inflation and subsequent perfusion. However, this traditional method requires the operator to manually switch syringes during operation, which can easily lead to unstable balloon pressure or delayed perfusion, and even occasionally cause medical accidents due to human errors in reversing the operation sequence. SUMMARY

[0004] To solve the problems raised in the background art, the present application provides a renal blood perfusion device for pre-ischemic kidney, which avoids human timing errors in operation by strictly separating the two stages, ensures perfusion after blood vessel closure, and uses the mechanical interlocking mechanism of the stopper and the travel bar to forcibly require the liquid balloon to be inflated before starting perfusion, thereby eliminating the risk of misoperation from the hardware level.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a kidney blood perfusion device for kidney ischemia, comprising a casing, a fastener, a movable plate, a moving mechanism and a pushing piece, a pair of fasteners are arranged on one side of the casing, and two injectors are respectively fixed on the fasteners; the movable plate is arranged on the casing through the moving mechanism, and the moving mechanism can drive the movable plate to move towards or away from the injectors; a pair of pushing pieces for pushing the piston handles of the two injectors are arranged on the movable plate; the pushing piece comprises a sliding sleeve, a moving sleeve and an elastic member, the sliding sleeve is arranged on the side of the movable plate, the moving sleeve is slidingly inserted into the sliding sleeve, and the elastic member is arranged between the inside of the sliding sleeve and the moving sleeve; a stop pad is fixedly arranged on the side of the moving sleeve, and the stop pad extends radially outward from the sliding groove axially arranged on the side wall of the sliding sleeve; a pair of travel strips corresponding to the two stop pads are arranged on the casing, and when the stop pad abuts against the travel strip, the corresponding moving sleeve stops moving towards the direction of the injector; an adjustable length push rod is arranged on one end of the moving sleeve close to the stop pad, and the push rod is used for pushing the piston handle of the injector.

[0006] On the basis of the above technical scheme, the present application can also be improved as follows.

[0007] Further, the travel strip is arranged on the casing through a driving member, and the distance between the travel strip and the fastener is adjustable.

[0008] Further, the driving member comprises two left and right hinge supports arranged in the casing, an adjusting screw rotatably connected with the two hinge supports, and a moving block in screw transmission connection with the adjusting screw, and a guide groove is arranged on the casing, and the travel strip is fixedly connected with the moving block after penetrating through the guide groove.

[0009] Further, the sliding sleeve is slidingly arranged on the movable plate through a dovetail strip.

[0010] Further, the movable plate is further provided with an adjusting member, and the adjusting member is used for adjusting the positions of the two pushing pieces on the movable plate.

[0011] Further, the adjusting member comprises a driving member, a driven gear and a pair of racks, the driven gear is rotatably arranged on the movable plate; the two racks are arranged in parallel and are fixedly connected with the corresponding sliding sleeves, the two racks are in meshing connection with the driven gear, and the driving member is arranged on the movable plate and is used for driving the driven gear to rotate.

[0012] Further, the driving member comprises a rack plate, an electric push rod and a driving gear, the rack plate is slidingly arranged on the back of the movable plate, the electric push rod is fixedly arranged on the back of the movable plate, and the telescopic end of the electric push rod is fixedly connected with one end of the rack plate, the rack plate is engaged with the driving gear which is rotatably arranged on the back of the movable plate, the driving gear is coaxially connected with a synchronous pulley which is located on the front of the movable plate, and the synchronous pulley is drivingly connected with a transmission wheel which is coaxially connected with the driven gear through a synchronous belt.

[0013] Further, the moving mechanism comprises two sliding rods, a moving plate, a lead screw and a motor, the two sliding rods are parallel and spaced apart, the moving plate is slidingly arranged between the two sliding rods, the lead screw is rotatably arranged in the cabinet, the moving plate is screw drivingly connected with the lead screw, and the motor is arranged on one side of the cabinet and used for driving the lead screw to rotate.

[0014] Further, the elastic member is a spring or a spring type telescopic rod.

[0015] Further, the cabinet is provided with a control console.

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

[0017] The present application provides a kind of for kidney ischemia before kidney blood perfusion device, first pusher (push rod) preferentially pushes liquid capsule inflation syringe, makes liquid capsule rapidly close kidney artery and inferior vena cava near and far end, forms isolated area, completes liquid capsule injection inflation blocking phase.This step blocks the connection between kidney and systemic circulation, creating conditions for subsequent local perfusion, when liquid capsule is completely inflated, stop block pad contact travel bar, trigger elastic member contraction, first pusher stops moving, but movable plate can continue to move, drive second pusher physiological saline injection syringe, realize seamless switching of perfusion phase.

[0018] Two-stage strict separation avoids human timing errors in operation, ensures perfusion after blood vessel is closed, and the mechanical interlocking mechanism of stop block and travel bar requires liquid capsule to be inflated before starting perfusion, which eliminates the risk of misoperation from the hardware level.Compared with conventional manual operation of syringe, the speed is faster (traditional step-by-step operation requires the operator to manually switch the syringe, which can cause unstable liquid capsule pressure or delayed perfusion), and the operation time is shortened by integrating two steps mechanically and automatically, and the risk of blood vessel tearing or thrombus shedding caused by operation error is reduced.Double-stage seamless switching of liquid injection and inflation and perfusion is efficient, and the perfusion speed of mechanical injection during perfusion is more uniform, and the effect is better.

[0019] The present application can also move the rack plate by the electric push rod, drive the driving gear to rotate by the rack plate, and then drive the driven gear to rotate, the rotation of the driven gear makes the two racks move away from each other, so that the two sliding sleeves are arranged in front of the movable plate. The structure ensures the strict action sequence of the liquid capsule expansion and the catheter injection, and the design can realize stepless adjustment within the length range of the track of the movable plate, has larger adjustment range and higher flexibility. The initial interval of the two push rods can be accurately set by the electric push rod, so as to accurately control the switching time of the liquid capsule expansion and perfusion action, and ensure that it strictly meets the operation expectation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 is a structural schematic diagram of the kidney blood perfusion device for kidney before ischemia connected with the catheter in the embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of the kidney blood perfusion device for kidney before ischemia in the embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of the kidney blood perfusion device for kidney before ischemia in the embodiment of the present application;

[0024] Figure 4 is a structural schematic diagram of the pushing piece in the embodiment of the present application;

[0025] Figure 5 is a structural schematic diagram of the adjusting piece and the pushing piece in the embodiment of the present application;

[0026] Figure 6 is a structural schematic diagram of the back of the adjusting piece and the pushing piece in the embodiment of the present application;

[0027] Figure 7 is a structural schematic diagram of the side of the adjusting piece and the pushing piece in the embodiment of the present application;

[0028] Figure 8 is a sectional view structural schematic diagram of the catheter in the embodiment of the present application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1. Housing; 2. Fastener; 3. Movable plate; 4. Moving mechanism; 400. Slide rod; 401. Movable plate; 402. Lead screw; 403. Motor; 5. Pushing component; 500. Sliding sleeve; 501. Moving sleeve; 502. Elastic component; 503. Baffle; 504. Stroke bar; 505. Push rod; 6. Adjusting component; 600. Driven gear; 601. Rack; 602. Rack plate; 603. Electric push rod; 604. Driving gear; 7. Control console; 8. Tubing; 9. Infusion channel; 10. Fluid bladder. Detailed Implementation

[0031] The technical solutions provided by the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, if terms such as "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" are used to indicate the orientation or positional relationship, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Example 1

[0034] This invention provides a renal hemoperfusion device for use before renal ischemia, comprising a housing 1, a pair of fasteners 2, a movable plate 3, and a pair of pushing components 5. Wherein, as... Figures 2 to 4 As shown, a pair of fasteners 2 are provided on the right side of the front side of the housing 1 for fixing the syringe; the movable plate 3 is set inside the housing 1 through the moving mechanism 4, and the moving mechanism 4 can drive the movable plate 3 to move left and right inside the housing 1 to move closer to or away from the fasteners 2 (or syringe) on the right side; a pair of pushers 5 are both set on the movable plate 3 for pushing the piston handle in the syringe. The fastener 2 includes a concave arc-shaped placement plate set on the side of the housing 1, and an arc-shaped sleeve is detachably set on its side. The arc-shaped sleeve can lock and fix the syringe in the fastener 2. A flexible anti-slip pad layer can be set on the side of the arc-shaped sleeve that is pressed and fitted against the outer wall of the syringe.

[0035] like Figure 3 , Figure 4 and Figure 5 As shown, the pusher 5 includes a sliding sleeve 500, a moving sleeve 501, a retaining pad 503, a travel bar 504, and a push rod 505; the sliding sleeve 500 is disposed on the side of the movable plate 3, preferably, as shown in the figure. Figure 6As shown, the sliding sleeve 500 is arranged on the side of the movable plate 3 by dovetail sliding; the movable sleeve 501 is slidingly inserted into the sliding sleeve 500, and the elastic member 502 is arranged between the inside of the sliding sleeve 500 and the movable sleeve 501, for supporting the movable sleeve 501; the stop pad 503 is arranged on the side of the movable sleeve 501, the stop pad 503 is arranged outside the sliding sleeve 500, and the side of the sliding sleeve 500 is provided with a slot hole for the sliding of the stop pad 503; the travel bar 504 is arranged on the casing 1, and the travel bar 504 corresponds to the stop pad 503; the push rod 505 is arranged at the right end (the end towards the syringe) of the movable sleeve 501, and the length of the push rod 505 extending out of the movable sleeve 501 is adjustable, and the right end of the push rod 505 can contact the movable handle in the syringe.

[0036] In the embodiment, the push rod 505 and the movable sleeve 501 are preferably threadedly connected, that is, the distance value of the right ends of the two push rods 505 in the horizontal projection plane can be adjusted, and in addition to the threaded connection, other adjustable connection modes can also be used, and the elastic member 502 can be a spring or a spring telescopic rod.

[0037] As shown in the drawings, Figure 1 With Figure 8 As shown, the pipe matched with the perfusion device includes a catheter 8, the catheter 8 has a transfusion channel 9, a plurality of liquid bags 10 are arranged at the middle part of the catheter 8, and the transfusion channel 9 is in communication with the liquid bags 10. The catheter 8 also has a lavage channel, and the lavage channel and the transfusion channel are independent of each other. The transfusion channel is connected with one syringe, and the lavage channel is connected with another syringe.

[0038] Specifically, when the pre-ischemic perfusion of the kidney is performed, first, the catheter 8 is implanted into the renal artery of the patient under the guidance of ultrasound. Then, two syringes (fixed in the corresponding buckles 2, respectively) are connected to the side end of the catheter 8 in sequence, and by adjusting the initial positions of the two push rods 505, the push rod 505 for injecting the liquid bag 10 is in the front position. Then, the moving mechanism 4 is started to drive the movable plate 3 to move in the casing 1, and the two pushers 5 are driven to move forward synchronously. At this time, the push rod 505 which acts preferentially pushes the syringe for inflating the liquid bag 10, so that the liquid bag 10 on the catheter 8 is inflated rapidly, thereby closing the proximal and distal ends of the aorta and the inferior vena cava. After the inflation of the liquid bag 10 is completed, the stop pad 503 corresponding to the push rod 505 will contact the travel bar 504;

[0039] When the movable plate 3 continues to move, one push rod 505 of the inflation liquid bag 10 stops moving (the corresponding elastic member 502 is contracted to store energy), and is retracted into the corresponding sliding sleeve 500, and the other push rod 505 of the water injection and irrigation is in contact with the corresponding syringe to inject normal saline into the kidney for irrigation; when the movable plate 3 moves back, the elastic member 502 releases potential energy, thereby moving the corresponding push rod 505 back to the original position. The elastic member 502 is initially set to store a certain amount of elastic potential energy, so that the push rod 505 is not compressed and shortened when pushing the piston rod of the syringe (the pushing force required at this time is generally small).

[0040] Through the design, the first pusher 5 (push rod 505) preferentially pushes the liquid bag inflation syringe, so that the liquid bag 10 quickly seals the proximal and distal ends of the renal artery and the inferior vena cava to form an isolated area. This step blocks the connection between the kidney and the systemic circulation, creating conditions for subsequent local perfusion. When the liquid bag 10 is fully inflated, the stop pad 503 contacts the travel bar 504, and at this time the sliding sleeve 501 cannot continue to move to the right due to the limitation of the travel bar, and the pressure of the travel bar 504 on the stop pad increases to trigger the elastic member 502 to contract and store energy. At the same time, the movable plate 3 continues to move to drive the second pusher 5 to push the normal saline syringe, realizing seamless switching from the liquid bag inflation blocking stage to the perfusion stage.

[0041] The strict separation of the two stages avoids human timing errors in operation, ensures perfusion after blood vessel blocking, and the mechanical interlocking mechanism of the stop pad 503 and the travel bar 504 forcibly requires the liquid bag 10 to be inflated before starting perfusion, which eliminates the risk of misoperation from the hardware level. At the same time, compared with the conventional manual operation of the syringe, the speed is faster (traditional step-by-step operation requires the operator to manually switch the syringe, which is easy to cause unstable pressure of the liquid bag 10 or delayed perfusion), and through the mechanical automation integration of the two steps, the operation time is shortened, and the risk of blood vessel tearing or thrombus shedding caused by operation errors is reduced.

[0042] As shown in Figure 1 As shown in Figure 2 The side surface of the shell 1 is provided with a control console 7, and the control console 7 includes a display screen, operation buttons and a controller (CPU).

[0043] As shown in Figure 3As shown, the travel bar 504 is disposed within the housing 1 via a driving component. The driving component can be a servo electric actuator, a threaded rod moving structure, or a sliding structure, etc., which can adjust and position the travel bar 504 left and right. In one specific embodiment, the driving component includes two left and right hinge supports disposed within the housing 1, an adjusting screw rotatably connected to the two hinge supports, and a moving block helically connected to the adjusting screw. The upper and lower sides of the moving block can be configured with guide rods (horizontally arranged in the left and right direction) to limit its movement. The moving block slides against the guide rods. The housing 1 is provided with a guide groove, through which the travel bar passes and is fixedly connected to the moving block. The rotation adjustment of the adjusting screw is preferably achieved using a corresponding matching motor.

[0044] Implementation 2

[0045] This embodiment is a further optimization based on the first embodiment described above. The parts that are the same as those in the aforementioned technical solution will not be repeated here. Figure 4 , Figure 5 and Figure 6 As shown, in order to better realize the present invention, the following arrangement is adopted. In this embodiment, the movable plate 3 is also provided with an adjusting member 6, which is used to adjust the position arrangement of the two pushing members 5 on the movable plate 3.

[0046] The adjusting component 6 includes a driven gear 600, a pair of racks 601, and a driving component. The driven gear 600 is rotatably mounted on the side of the movable plate 3. The pair of racks 601 are mounted on the corresponding sliding sleeves 500, and the two racks 601 mesh with the driven gear 600. The driving component is mounted on the movable plate 3 and is used to drive the driven gear 600 to rotate.

[0047] like Figure 6 As shown, the driving component includes a rack plate 602, an electric actuator 603, and a drive gear 604. The rack plate 602 is slidably disposed at the bottom of the movable plate 3. The electric actuator 603 is disposed at the bottom of the movable plate 3, and its output end is connected to the rack plate 602. The electric actuator 603 is a servo electric actuator. The drive gear 604 is rotatably disposed at the bottom of the movable plate 3, and it meshes with the rack plate 602. The drive gear 604 is connected to the driven gear 600 via a synchronous belt. The driving component can also be a servo motor.

[0048] Specifically, the rack plate 602 can also be moved by the electric push rod 603, the driving gear 604 is driven to rotate by the rack plate 602, and the driven gear 600 is driven to rotate. The rotation of the driven gear 600 moves the two racks 601 away from each other, so that the two sliding sleeves 500 are arranged in front of and behind the movable plate 3. This structure ensures the strict action sequence of the liquid capsule 10 first expanding and the catheter 8 then injecting. Unlike manual adjustment which may have thread stroke limit, this design does not rely on thread stroke limit, and can achieve stepless adjustment within the length range of the track of the movable plate 3, having greater adjustment range and higher flexibility. The initial interval of the two push rods 505 can be accurately set by the electric push rod 603, so as to accurately control the switching time of the liquid capsule 10 expansion and perfusion action, and ensure that it strictly meets the operation expectation.

[0049] Embodiment three

[0050] This embodiment is further optimized on the basis of the above-mentioned embodiment one, and the same parts as the foregoing technical solutions will not be described here again, such as Figure 4 To better realize the present application, the following setting mode is particularly adopted, in this embodiment, the moving mechanism 4 comprises a pair of sliding rods 400, a lead screw 402 and a motor 403; the pair of sliding rods 400 are arranged in the casing 1, and the moving plate 401 is arranged to slide between the two sliding rods 400; the lead screw 402 is arranged to rotate in the casing 1, and the moving plate 401 is threadedly connected with the lead screw 402; the motor 403 is arranged on the side of the casing 1 and is used to drive the lead screw 402 to rotate; and the movable plate 3 is arranged on the moving plate 401.

[0051] Specifically, corresponding to the use of the moving mechanism 4, the moving plate 401 slides forward and backward on the two sliding rods 400 by driving the lead screw 402 to rotate by the motor 403, thereby driving the movable plate 3 to move in the casing 1, and completing the injection of the two injectors.

[0052] Specifically, the control mode of the present application is controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, and the control mode and circuit connection will not be explained in detail here.

[0053] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0054] The foregoing description of certain examples of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with the specifically described examples, but rather by the appended claims.

[0055] The above description is only the preferred embodiment of the application, and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A renal hemoperfusion device for use before renal ischemia, characterized in that, The device includes a housing (1), fasteners (2), a movable plate (3), a moving mechanism (4), and pushers (5). A pair of fasteners (2) are spaced apart on one side of the housing (1), each fastener (2) used to fix a syringe. The movable plate (3) is mounted on the housing (1) via the moving mechanism (4), and the moving mechanism (4) can drive the movable plate (3) to move closer to or further away from the syringe on the housing (1). A pair of pushers (5) are mounted on the movable plate (3) to push the piston handles of the two syringes. Each pusher (5) includes a sliding sleeve (500), a moving sleeve (501), and an elastic member (502). The sliding sleeve (500) is located on the side of the movable plate (3), and the moving sleeve (501) slides... The movable sleeve (501) is inserted into the sliding sleeve (500), and the elastic member (502) is provided between the sliding sleeve (500) and the movable sleeve (501). A retaining pad (503) is fixedly provided on the side of the movable sleeve (501), and the retaining pad (503) extends from the axially opened groove on the side wall of the sliding sleeve (500). The housing (1) is also provided with a pair of travel strips (504) corresponding to the two retaining pads (503). When the retaining pad (503) and the travel strip (504) are pressed together, the corresponding movable sleeve (501) stops moving in the direction of the syringe. An adjustable length push rod (505) is provided at one end of the movable sleeve (501) near the retaining pad (503). The push rod (505) is used to push the piston handle in the syringe.

2. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The travel bar (504) is mounted on the housing (1) via a drive component, and the distance between the travel bar (504) and the fastener (2) is adjustable.

3. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The driving component includes two left and right hinge supports disposed in the housing, an adjusting screw rotatably connected to the two hinge supports, and a moving block helically connected to the adjusting screw. The housing is provided with a guide groove, and the travel bar (504) passes through the guide groove and is fixedly connected to the moving block.

4. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The sliding sleeve (500) is slidably mounted on the movable plate (3) via a dovetail strip.

5. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The movable plate (3) is also provided with an adjusting component (6), which is used to adjust the position of the two pushing components (5) on the movable plate (3).

6. A renal hemoperfusion device for renal ischemia according to claim 5, characterized in that, The adjusting member (6) includes a driving member, a driven gear (600) and a pair of racks (601). The driven gear (600) is rotatably mounted on the movable plate (3). The two racks (601) are arranged in parallel and spaced apart and are respectively fixedly connected to the corresponding sliding sleeves (500). Both racks (601) mesh with the driven gear (600). The driving member is mounted on the movable plate (3) and is used to drive the driven gear (600) to rotate.

7. A renal hemoperfusion device for renal ischemia according to claim 6, characterized in that, The driving component includes a rack plate (602), an electric actuator (603), and a drive gear (604). The rack plate (602) is slidably disposed on the back of the movable plate (3). The electric actuator (603) is fixedly disposed on the back of the movable plate (3), and the telescopic end of the electric actuator (603) is fixedly connected to one end of the rack plate (602). The rack plate (602) meshes with the drive gear (604) which is rotatably disposed on the back of the movable plate (3). The drive gear (604) is coaxially connected to a synchronous pulley located on the front of the movable plate (3). The synchronous pulley is connected to the drive wheel coaxially connected to the driven gear (600) via a synchronous belt.

8. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The moving mechanism (4) includes a slide rod (400), a moving plate (401), a lead screw (402), and a motor (403). There are two slide rods (400) arranged parallel to each other in the housing (1). The moving plate (401) is slidably arranged between the two slide rods (400). The lead screw (402) is rotatably arranged in the housing (1). The moving plate (401) is helically connected to the lead screw (402). The motor (403) is arranged on one side of the housing (1) and is used to drive the lead screw (402) to rotate. The moving plate (3) is fixedly arranged on the moving plate (401).

9. A renal hemoperfusion device for renal ischemia according to claim 1, characterized in that, The elastic member (502) is a spring or a spring-type telescopic rod.

10. A renal hemoperfusion device for renal ischemia according to any one of claims 1-9, characterized in that, The housing (1) is provided with a control console (7).

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