Hydraulically-driven blood flow controlled release device

Abstract

The invention discloses a hydraulically-driven blood flow controlled release device, and belongs to the technical field of laparoscope blood flow blocking medical instruments. Comprising a controlled release belt, and the controlled release belt comprises a connecting part and a belt body; the controlled release execution component comprises a hydraulic cylinder with a first inner cavity, a first piston matched with the first inner cavity, and a controlled release push rod connected with the first piston; and the pressure control component comprises a pump body with a second inner cavity and a second piston matched with the second inner cavity of the pump body, and the second piston is fixed to the pump body through a position maintaining mechanism capable of adjusting the position of the second piston. According to the device, the blood vessel is blocked by adopting the controlled release belt with a small volume, and the wrapping of the fine blood vessel or tissue can be completed, so that the blood vessel or tissue is blocked; according to the controlled-release belt, the controlled-release belt is tightened or loosened through the hydraulically-driven controlled-release execution component, and the blocking force is observed through the pressure gauge, so that the size of the blocking force can be more accurately controlled.

Description

Technical Field

[0001] The present invention relates to a hydraulic-driven blood flow control and release device, belonging to the technical field of laparoscopic blood flow occlusion medical devices. Background Art

[0002] In surgical operations, especially in hepatectomy or liver transplantation, effectively controlling intraoperative bleeding is a key link to ensure the safety of the operation. At present, the commonly used liver blood flow occlusion techniques in clinical practice mainly include porta hepatis occlusion, infrahepatic occlusion, and selective vascular occlusion, etc., and the related instruments involve vascular clips, occlusion forceps, occlusion bands, etc. Traditional porta hepatis occlusion mostly uses a rubber tube or a urinary catheter to wind and tie the porta hepatis blood vessels, combined with the method of clamping with a vascular forceps to achieve blood flow occlusion. However, such methods have problems such as cumbersome operation, long time consumption, difficult to accurately control the ligation force, and are prone to increase the surgical risk due to the slippage of the occlusion band. For example, the porta hepatis occlusion device in the prior art needs to be fixed by tying knots outside the body, which not only depends on the experience of the operator, but may also cause vascular damage due to too tight ligation or occlusion failure due to too loose ligation.

[0003] Currently, mainly two types of vascular occlusion bands, namely mechanical traction type and airbag compression type, are used. The mechanical traction vascular occlusion band realizes vascular occlusion through mechanical tightening. For example, a blood flow control device provided by CN201910536189.9 has a simple structural principle, but it is difficult to accurately control the pressure, which may lead to incomplete occlusion or excessive compression, causing tissue damage or nerve injury; and its mechanical traction structure for transmitting the contraction force has a certain rigidity and will interfere with other surgical instruments in laparoscopy. The airbag compression type vascular occlusion band is easy to accurately regulate the occlusion force. For example, a laparoscopic porta hepatis occlusion device provided by CN202310740548.9, but its compression airbag is too large in volume under the premise of ensuring the occlusion stroke and is difficult to be applicable to vascular occlusion in laparoscopic surgery.

[0004] In order to solve the above problems, a blood flow control and release instrument that is convenient for controlled release, the blood flow occlusion can be quantified and applicable to laparoscopic surgery is designed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a hydraulic-driven blood flow control and release device, which adopts a combined driving method of hydraulic pressure and machinery and can accurately control the blood flow occlusion force.

[0006] The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0007] A hydraulic-driven blood flow control and release device, comprising:

[0008] A control and release band, the control and release band includes a connecting part and a band body, and both ends of the band body are respectively fixed to the connecting part and enclose a ring;

[0009] Controlled release execution component, the controlled release execution component includes a hydraulic cylinder having a first inner cavity, a first piston cooperating with the first inner cavity, and a controlled release push rod connected to the first piston. One end of the hydraulic cylinder close to the patient is the proximal end, and one end close to the operator is the distal end. The controlled release push rod extends out from the proximal opening of the hydraulic cylinder. A controlled release part is provided at the proximal end of the controlled release push rod, and a controlled release hole is opened on the controlled release part. The connecting part is connected to the hydraulic cylinder. The middle part of the belt body passes through the controlled release hole to form a ring shape, and the size of the ring formed by the belt body at the proximal end of the controlled release part is changed by the telescopic movement of the controlled release push rod;

[0010] Pressure control component, the pressure control component includes a pump body having a second inner cavity and a second piston cooperating with the second inner cavity of the pump body. The second piston is fixed to the pump body through a position holding mechanism that can adjust its own position. The proximal end of the second inner cavity is communicated with the distal end of the first inner cavity through a pipeline. The first inner cavity, the second inner cavity, and the pipeline are filled with liquid. A pressure gauge for measuring the liquid pressure in the pipeline is installed at the proximal end of the pump body or the distal end of the pipeline.

[0011] Preferably, the belt body is composed of a first belt body and a second belt body connected together by a quick locking member.

[0012] Preferably, the quick locking member includes a clamp seat for fixing at the end of the first belt body and a clamp body fixed on the clamp seat for clamping the second belt body.

[0013] Preferably, a protrusion is provided on the outer wall of the hydraulic cylinder. The connecting part of the controlled release belt is an annular sleeve. The annular sleeve is sleeved from the distal end to the proximal end of the hydraulic cylinder and blocked by the protrusion, so as to realize the quick connection between the connecting part and the hydraulic cylinder.

[0014] Preferably, the position holding mechanism includes a pressure control push rod connected to the second piston and an internal thread sleeve fixed on the pump body. The pressure control push rod is provided with an external thread on its rod body, and a rotating part is provided at the distal end of the pressure control push rod. The internal thread sleeve on the pump body is matched with the external thread of the pressure control push rod. By rotating the rotating part to rotate the pressure control push rod, the second piston can be held at any position in the second inner cavity of the pump body.

[0015] Preferably, the pressure gauge is used to indicate the magnitude of the blocking force exerted by the controlled release execution component on the controlled release belt, and by changing the magnitude of the blocking force of the controlled release belt, the blood flow magnitude of the blocked blood vessel or tissue can be quantified.

[0016] Preferably, the pressure control component is connected to a plurality of controlled release execution components through multiple pipelines, and a controlled release belt is installed at the proximal end of each controlled release execution component.

[0017] Preferably, a control valve for controlling on-off is installed on each pipeline connected to the pressure control component, and each control valve independently controls the controlled release execution component on the pipeline where it is located.

[0018] Preferably, the rotating part rotates manually or is driven by a motor.

[0019] Preferably, the pipeline adopts a flexible pipeline.

[0020] Preferably, the width of the controlled release belt body is 1-8 mm.

[0021] Preferably, the first inner cavity, the second inner cavity and the pipeline are filled with liquid, and the liquid includes water, physiological saline, and special hydraulic fluid. Gas can also be used to replace the liquid.

[0022] The beneficial effects of the present invention are:

[0023] (1) Compared with the airbag compression type blocking belt, the device provided by the present invention uses a controlled release belt with a smaller volume to block blood vessels, and can complete the wrapping of small blood vessels or tissues, so as to block the blood vessels or tissues;

[0024] (2) Compared with the existing pure mechanical tightening method for blocking, it is difficult to accurately control the pressure. The controlled release belt of the present invention tightens or loosens the controlled release belt through a controlled release execution component driven by hydraulic pressure, and observes the blocking force through a pressure gauge, and can more accurately control the size of the blocking force, so as to avoid the negative effects brought by being too tight or too loose. And in the maintenance stage, it can immediately detect the pressure change and make adjustments immediately, so that the blocking force is always maintained within a suitable range. By accurately controlling the blocking force, the blood flow can be controlled in a specific interval, for example, the blood flow is maintained at a specific flow state such as 30%, 40%, 50%, etc., which can not only ensure less bleeding during the operation, but also will not cause warm ischemia injury to the target organ;

[0025] (3) The pressure control component can accurately squeeze liquid into or extract liquid from the controlled release execution component, quickly realize the control and release of the controlled release belt on blood vessels or tissues, and can fine-tune the size of the blocking force through the position maintaining mechanism and maintain the stability of the blocking force;

[0026] (4) The structure of the present device is simple and easy to control. The main body part can be made of disposable medical plastic according to needs, with low cost and convenient for popularization and use. In addition, the hydraulic pipeline for transmission can adopt a slender flexible pipeline to reduce the interference of other instruments during laparoscopic surgery. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 is the cross-sectional structural schematic diagram of the controlled release belt and the controlled release execution component;

[0029] Figure 3 is the three-dimensional structural schematic diagram of the controlled release belt and the controlled release execution component;

[0030] Figure 4 Schematic cross-sectional structure diagram of the pressure control component;

[0031] Figure 5 Schematic structure diagram of the quick locking component.

[0032] In the figure:

[0033] 1. Controlled release belt; 101. Connection part; 102. Belt body; 103. First belt body; 104. Second belt body;

[0034] 2. Controlled release execution component; 201. First inner cavity; 202. Hydraulic cylinder; 203. First piston; 204. Controlled release push rod; 205. Controlled release part; 206. Controlled release hole; 207. Protrusion; 208. Ring sleeve; 209. First joint;

[0035] 3. Pressure control component; 301. Second inner cavity; 302. Pump body; 303. Second piston; 304. Pressure gauge; 305. Second joint;

[0036] 4. Quick locking component; 401. Clamping seat; 402. Clamping body; 403. Buckle;

[0037] 5. Pipeline;

[0038] 6. Position holding mechanism; 601. Pressure control push rod; 602. Internal thread sleeve; 603. Rotating part. Specific implementation mode

[0039] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

[0040] As shown in Figure 1 the figure, the present hydraulic drive blood flow controlled release device includes: a controlled release belt 1, a controlled release execution component 2, and a pressure control component 3.

[0041] Among them, the controlled release belt 1 is used to be sleeved on the blood vessel or tissue that needs to block blood flow; then, the pressure control component 3 is used to squeeze or extract liquid into the controlled release execution component 2 to realize hydraulic transmission; the telescopic action of the controlled release execution component 2 is used to drive the ring formed by the controlled release belt 1 to tighten or loosen, so as to realize the control or release of the blood vessel or tissue.

[0042] As shown in Figure 2 , Figure 3As shown, the controlled release belt 1 includes a connecting portion 101 and a belt body 102. Both ends of the belt body 102 are respectively fixed to the connecting portion 101 and enclose a ring. The belt body 102 is made of an elastic belt or a non-elastic belt, preferably an elastic rubber belt, and the width of the belt body 102 is 1-8 mm. Among them, the non-elastic belt is more direct for the transmission of the blocking force and is more conducive to precisely controlling the blocking force. The advantage of the elastic belt is that the contact surface is softer. In order to facilitate being sleeved around the untruncated blood vessel or tissue, the belt body 102 adopts a two-section structure, including a first belt body 103 and a second belt body 104. One end of the first belt body 103 and the second belt body 104 are respectively fixed to the connecting portion 101. During the operation, the free ends of the first belt body 103 and the second belt body 104 bypassing the continuous blood vessel or tissue are connected together by the quick locking member 4 to form a ring-shaped belt body 102 sleeved on the blood vessel or tissue, so as to tighten the ring-shaped belt body 102 subsequently.

[0043] As Figure 2 , Figure 3 As shown, the controlled release execution component 2 includes a hydraulic cylinder 202 having a first inner cavity 201. The hydraulic cylinder 202 is made of a smooth and slender medical plastic cylinder. It also includes a first piston 203 and a controlled release push rod 204. The first piston 203 cooperates with the first inner cavity 201. By squeezing or pumping out liquid into the first inner cavity 201 of the hydraulic cylinder 202, the movement of the first piston 203 is obtained, and the controlled release push rod 204 connected to the first piston 203 moves accordingly. The end of the hydraulic cylinder 202 close to the patient is the proximal end, and the end close to the operator is the distal end. A first joint 209 connected to the pipeline 5 is provided at the distal end of the hydraulic cylinder 202, and an opening for accommodating the telescopic movement of the controlled release push rod 204 is provided at the proximal end of the hydraulic cylinder 202. The controlled release push rod 204 extends out from the proximal opening of the hydraulic cylinder 202. A controlled release portion 205 is provided at the proximal end of the controlled release push rod 204. The controlled release push rod 204 and the controlled release portion 205 are integrally formed of medical plastic. A controlled release hole 206 for the belt body 102 to pass through is provided on the controlled release portion 205. The connecting portion 101 is connected to the hydraulic cylinder 202 (it can be connected in a fixed manner; it can also be connected in a detachable limiting manner for convenience, which can prevent the connecting portion 101 from detaching from the proximal end of the hydraulic cylinder 202 and can be quickly disassembled and replaced). The middle part of the belt body 102 passes through the controlled release hole 206 to form a ring. By the telescopic movement of the controlled release push rod 204, the size of the ring formed by the belt body 102 at the proximal end of the controlled release portion 205 is changed. The proximal end of the connecting portion 101 adopts a concave arc, and the surface of the connecting portion 101 is covered with a medical rubber layer to be more adapted to the surface of the blood vessel or tissue and reduce the damage caused by uneven local stress.

[0044] Only one controlled release hole 206 may be opened on the controlled release part 205. In this case, the belt body 102 passes through and then returns through this controlled release hole 206. At least two controlled release holes 206 may also be opened on the controlled release part 205. One end of the belt body 102 is fixed to the connecting part 101. The other end of the belt body 102 passes from the distal end to the proximal end of one of the controlled release holes 206, then passes from the proximal end to the distal end of another controlled release hole 206, and finally is fixed to the connecting part 101. The porous structure and the winding method can ensure that even when the controlled release push rod 204 exceeds the maximum stroke and detaches from the hydraulic cylinder 202, it will still be connected to the belt body 102 and will not completely lose the connection.

[0045] As Figure 4 shown, the pressure control component 3 includes a pump body 302 having a second inner cavity 301, a second piston 303, and a position holding mechanism 6. The pump body 302 is cylindrical and is held by the operator for use. A second joint 305 connected to the pipeline 5 is provided at the proximal end of the pump body 302, and the distal end of the pump body 302 is open. The second piston 303 is fitted and installed in the second inner cavity 301 of the pump body 302. The second piston 303 is fixed to the pump body 302 through the position holding mechanism 6 that can adjust its own position. In this way, when the blocking force is appropriate, the operator's hands can be liberated and the blocking force can be automatically maintained. The proximal end of the second inner cavity 301 is communicated with the distal end of the first inner cavity 201 through the pipeline 5. The first inner cavity 201, the second inner cavity 301, and the pipeline 5 are filled with liquid (the liquid includes water, physiological saline, and special hydraulic fluid; gas can also be used to replace the liquid). Preferably, water or physiological saline is filled. Water has the advantages of a small compression ratio and direct pressure conduction, and is harmless to the human body even in case of accidental leakage. A pressure gauge 304 for measuring the liquid pressure in the pipeline 5 is installed at the proximal end of the pump body 302 or the distal end of the pipeline 5.

[0046] The pressure gauge 304 is used to indicate the magnitude of the blocking force exerted by the controlled release execution component 2 on the controlled release belt 1, and by changing the magnitude of the blocking force of the controlled release belt 1, the blood flow magnitude of the blocked blood vessel or tissue can be quantified.

[0047] Currently, for a single mechanical traction type blocking belt, due to limitations of the driving structure, a rigid driving structure is usually adopted. Any slight movement of the blocking belt will cause a large change in the traction force. It cannot accurately maintain the magnitude of the traction force, nor can it accurately measure the magnitude of the direct blocking force of the blocking belt on the blood vessel or tissue. Therefore, the mechanical traction type blocking belt may cause incomplete blocking or excessive compression, resulting in tissue damage or nerve damage. Moreover, its mechanical traction structure for transmitting the contraction force has a certain rigidity and will interfere with other surgical instruments during laparoscopic surgery.

[0048] For the transmission section of this device from outside the abdominal cavity to inside the abdominal cavity, a hydraulic transmission method is adopted, while the controlled release belt 1 is still used at the blocking end. The controlled release execution component 2 driven by hydraulic pressure can provide stable and sustainable blocking force. Depending on the cooperation of the pressure gauge 304 and the position holding mechanism 6, through the fine adjustment of the position holding mechanism 6 and the real-time measurement of the pressure gauge 304, the magnitude of the blocking force of the belt body 102 of the controlled release belt 1 can be accurately controlled, so as to accurately control the blocking force, and the blood flow control of blood vessels or tissues can be within a specific range. For example, the blood flow rate is maintained at specific flow states such as 30%, 40%, 50%, etc., which can not only ensure less blood loss during the operation, but also not cause thermal ischemia damage to the target organ. In addition, the pipeline can adopt a slender flexible pipeline 5 (medical plastic pipe) to reduce the interference of other instruments during laparoscopic surgery.

[0049] Currently, for a single airbag compression type blocking belt, it must have an inflatable inner cavity, resulting in a problem of too large size at the blocking end. And the pressure sensor for measuring blood vessel compression also needs to be installed inside the airbag, further increasing the volume and complexity of the airbag. While this device adopts a combined driving method of hydraulic pressure and machinery, using the small-sized controlled release belt 1 to block blood vessels, the pressure value in the pipeline 5 can be measured by the external pressure gauge 304 to reflect the pulling force of the controlled release execution component 2 on the controlled release belt 1. It can not only accurately measure the magnitude of the blocking force, but also complete the wrapping of small blood vessels or tissues, so as to block the blood vessels or tissues.

[0050] As Figure 5 shown, in some embodiments, the quick locking member 4 includes a clamp seat 401 for fixing at the end of the first belt body 103, and a clamp body 402 fixed on the clamp seat 401 for clamping the second belt body 104. The clamp body 402 is composed of an upper clamp body 402 and a lower clamp body 402 made of medical plastic. One end of the upper clamp body 402 and the lower clamp body 402 is hinged to each other, and the other end is connected to each other through a buckle 403. Pass the second belt body 104 between the upper clamp body 402 and the lower clamp body 402, and use surgical forceps to press the upper clamp body 402 and the lower clamp body 402, so that the two are firmly fixed through the buckle 403, thereby clamping the second belt body 104. Before tightening, the size of the annular ring can be changed through the locking position of the second belt body 104, so as to adapt to blood vessels or tissue parts of different thicknesses. By using the quick locking member 4 and the controlled release execution component 2 in cooperation, the controlled release execution component 2 is always in a fully retractable stroke for operation (if there is no cooperation of the quick locking member 4, when the controlled release execution component 2 is at the maximum stroke, it may not be able to block blood vessels or tissues).

[0051] As Figure 3As shown, in some embodiments, a protrusion 207 is provided on the outer wall of the hydraulic cylinder 202. The connecting portion 101 of the controlled release band 1 is an annular sleeve 208. The annular sleeve 208 is sleeved from the distal end to the proximal end of the hydraulic cylinder 202 and is blocked by the protrusion 207, thereby realizing the quick connection between the connecting portion 101 and the hydraulic cylinder 202. During a single surgery, the belt body 102 may break or other situations requiring replacement may occur. At this time, the connecting portion 101 of the controlled release band 1 is connected to the hydraulic cylinder 202 by the annular sleeve 208, and no fixation is required. Only the annular sleeve 208 needs to be limited by the protrusion 207 to prevent the connecting portion 101 from detaching from the hydraulic cylinder 202. The controlled release band 1 can be conveniently replaced without replacing the entire device, saving the usage cost.

[0052] As Figure 4 shown, in some embodiments, the position maintaining mechanism 6 includes a pressure control push rod 601 connected to the second piston 303 and an internal thread sleeve 602 fixed on the pump body 302. The pressure control push rod 601 has an external thread on its rod body, and a rotating portion 603 is provided at the distal end of the pressure control push rod 601. The internal thread sleeve 602 on the pump body 302 is matched with the external thread of the pressure control push rod 601. By rotating the pressure control push rod 601 through the rotating portion 603, the second piston 303 can be maintained at any position in the second inner cavity 301 of the pump body 302.

[0053] As Figure 4 shown, in some embodiments, the rotating portion 603 is rotated manually or driven by a motor. By adopting the manual rotation method, the material cost can be saved so that the device can be made into a disposable medical device. By adopting the motor drive method (not shown in the figure), the motor rotating shaft is connected to the rotating portion 603, the motor body is fixed on the sliding seat, a strip-shaped slideway is provided on the hydraulic cylinder 202, the sliding seat is provided with an inner hole matched with the hydraulic cylinder 202, and a convex block matched with the strip-shaped slideway is provided in the inner hole. The sliding seat is sleeved on the hydraulic cylinder 202, and the convex block is restricted to slide in the strip-shaped slideway. The sliding seat and the motor do not rotate relative to the hydraulic cylinder 202, but will move relative to the second piston 303. The motor drive method can improve the degree of automation. Connecting the pressure gauge 304 and the motor to the controller system can realize automatic rotation to the set position according to the set pressure value, and can also be automatically maintained when the set pressure value is reached, which can reduce the workload of the operator.

[0054] Since the diameter of the laparoscope surgery opening is generally between 5 - 15 mm, therefore, in order to enable the controlled release band 1 and the controlled release execution component 2 of the device to enter the abdominal cavity along the opening, the maximum width of the controlled release band 1 and the controlled release execution component 2 is less than the laparoscope surgery opening.

[0055] In order to solve the problem of blood flow blockage of multiple blood vessels or tissues during a single surgery, an embodiment is designed in which a pressure control component 3 controls multiple controlled release execution components 2 simultaneously.

[0056] In some embodiments, the pressure control component 3 is respectively connected to a plurality of controlled release execution components 2 through a plurality of pipelines 5, and a controlled release belt 1 is installed at the proximal end of each controlled release execution component 2. A plurality of controlled release belts 1 can be controlled by one pressure control component 3 to block respective blood vessels or tissues simultaneously.

[0057] In some embodiments, a control valve for controlling on-off is installed on each pipeline 5 connected to the pressure control component 3, and each control valve individually controls the controlled release execution component 2 of the pipeline 5 where it is located. The control valve can be used to independently control the on-off of each branch in the pipeline 5.

[0058] Usage method:

[0059] The controlled release execution component 2 is in an initial state. At this time, the controlled release push rod 204 retracts into the hydraulic cylinder 202. The first belt body 103 and the second belt body 104 are manipulated to wrap around the target blood vessel or tissue, and then the free ends of the first belt body 103 and the second belt body 104 are connected through the quick locking member 4 to form a closed wrapping ring. At this time, the accommodation space inside the ring is the largest, and there is no binding force on the wrapped tissue or blood vessel.

[0060] When the pressure control component 3 gradually increases the pressure inside the controlled release execution component 2, the pressure inside the hydraulic cylinder 202 gradually increases, and the controlled release push rod 204 gradually extends under the action of the hydraulic pressure. The controlled release part 205 gradually reduces the closed ring formed by the first belt body 103 and the second belt body 104, and then generates a blocking and binding force on the wrapped blood vessel or tissue, thereby controlling blood flow.

[0061] By controlling the magnitude of the hydraulic pressure generated by the pressure control component 3, the thrust of the controlled release push rod 204 can be controlled, thereby controlling the binding force on the tissue or blood vessel. The magnitude of the hydraulic pressure is displayed in real time through the pressure gauge 304, so as to provide a more precise binding force to appropriately control blood flow. Controlling blood flow not only includes completely blocking blood flow, but also includes fine-tuning the pressure according to the actual situation of the operation to achieve partial blocking, which can not only ensure less blood loss during the operation, but also will not cause warm ischemia injury to the target organ.

[0062] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A hydraulically driven blood flow controlled release device, characterized in that: include: A controlled release belt (1), the controlled release belt (1) comprising a connecting portion (101) and a belt body (102), wherein both ends of the belt body (102) are respectively fixed to the connecting portion (101) and form a ring; The controlled release execution component (2) comprises a hydraulic cylinder (202) having a first inner cavity (201), a first piston (203) matched with the first inner cavity (201), and a controlled release push rod (204) connected to the first piston (203), wherein the hydraulic cylinder (202) has a proximal end close to the patient and a distal end close to the operator, and the controlled release push rod (204) is arranged to move from the proximal end of the hydraulic cylinder (202) to the distal end of the hydraulic cylinder (202). The control release push rod (204) extends out from the opening at the end, a control release portion (205) is arranged at the proximal end of the control release push rod (204), a control release hole (206) is opened on the control release portion (205), the connecting portion (101) is connected to the hydraulic cylinder (202), the middle portion of the belt body (102) passes through the control release hole (206) to form a ring, and the size of the ring formed by the belt body (102) at the proximal end of the control release portion (205) is changed by the expansion and contraction of the control release push rod (204); A pressure control component (3), the pressure control component (3) comprising a pump body (302) having a second inner cavity (301), a second piston (303) cooperating with the second inner cavity (301) of the pump body (302), the second piston (303) being fixed to the pump body (302) via a position holding mechanism (6) capable of adjusting its own position, the proximal end of the second inner cavity (301) being connected to the distal end of the first inner cavity (201) via a pipeline (5), and the first inner cavity (201), the second inner cavity (301) and the pipeline (5) being filled with liquid.

2. A hydraulically driven blood flow controlled release device according to claim 1, characterized in that: The belt body (102) is composed of a first belt body (103) and a second belt body (104) connected together by a quick locking piece (4).

3. A hydraulically driven blood flow controlled release device according to claim 2, characterized in that: The quick locking member (4) comprises a clamping seat (401) for fixing to the end of the first belt body (103), and a clamping body (402) fixed to the clamping seat (401) for clamping the second belt body (104).

4. The hydraulically driven blood flow controlled release device according to claim 1, characterized in that: The outer wall of the hydraulic cylinder (202) is provided with a protrusion (207), and the connecting portion (101) of the controlled release band (1) is an annular sleeve (208). The annular sleeve (208) is sleeved from the distal end of the hydraulic cylinder (202) to the proximal end and is blocked by the protrusion (207), thereby realizing a quick connection between the connecting portion (101) and the hydraulic cylinder (202).

5. The hydraulically driven blood flow controlled release device according to claim 1, characterized in that: The position holding mechanism (6) comprises a pressure control push rod (601) connected to the second piston (303), and an internal threaded sleeve (602) fixed on the pump body (302); the pressure control push rod (601) is provided with an external thread on its rod body, and a rotating portion (603) is provided at the far end of the pressure control push rod (601); the internal threaded sleeve (602) on the pump body (302) cooperates with the external thread of the pressure control push rod (601), and the pressure control push rod (601) is rotated by the rotating portion (603) to achieve the second piston (303) being maintained at any position in the second inner cavity (301) of the pump body (302).

6. The hydraulically driven blood flow controlled release device according to claim 1, characterized in that: A pressure gauge (304) for measuring the pressure of the liquid in the pipeline (5) is installed at the proximal end of the pump body (302) or the distal end of the pipeline (5).

7. The hydraulically driven blood flow controlled release device according to claim 6, characterized in that: The pressure gauge (304) is used to indicate the magnitude of the blocking force applied by the controlled release execution component (2) to the controlled release band (1), and to quantify the magnitude of the blood flow in the blocked blood vessel or tissue by changing the magnitude of the blocking force of the controlled release band (1).

8. The hydraulically driven blood flow controlled release device according to claim 1, characterized in that: The pressure control component (3) is respectively connected to a plurality of controlled release execution components (2) via a plurality of pipelines (5), and a controlled release belt (1) is installed at the proximal end of each controlled release execution component (2).

9. The hydraulically driven blood flow controlled release device according to claim 8, characterized in that: A control valve for controlling on and off is installed on each pipeline (5) connected to the pressure control component (3), and each control valve independently controls the controlled release execution component (2) of the pipeline where it is located.

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