Temporary in-vitro flow transferring device for arch in-vivo three-opening window

Abstract

The invention relates to the technical field of medical instruments, in particular to a temporary in-vitro flow transferring device for an arch in-vivo three-opening window, which comprises a power device, a mounting tube, a blood vessel sheath and a fixing assembly, and further comprises two backflow tubes fixedly mounted on the front surface of the power device, and a driving mechanism mounted at one end of the mounting tube in a threaded manner, a puncture needle extending into the mounting tube is movably mounted in the blood vessel sheath, and a threaded rod is fixedly mounted at one end of the puncture needle; the driving mechanism drives the threaded rod to move and drives the fixing assembly to be automatically unfolded and folded at the same time, the horizontally-moving threaded rod drives the puncture needle to move into the blood vessel sheath to be recycled, the puncture needle is prevented from penetrating through the blood vessel, and meanwhile the fixing assembly is driven to automatically unfold the clamping hoop and firmly fix the clamping hoop to the arm of a patient; therefore, the blood vessel sheath is kept stable, blood vessel loosening or rupture caused by tremor or other factors is prevented, and the blood vessel safety of a patient in the operation process is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a temporary extracorporeal flow bypass device for three windows in an arch body. Background Art

[0002] Arch internal triple fenestration surgery is a complex and delicate vascular surgery, mainly used to treat lesions in the aortic arch, such as aortic dissection, aortic aneurysm, etc. Arch internal triple fenestration surgery is to open three windows on the stent graft of the aortic arch to reconstruct blood supply. During the arch internal triple fenestration surgery, the patient's blood vessels (such as the femoral artery and carotid artery) are connected through a temporary extracorporeal bypass device to draw blood from the body, and then return it to the body after being processed by the extracorporeal circulation device; in this way, when performing surgery on the aortic arch, even if the blood flow in the aortic arch is temporarily blocked, the brain can still obtain sufficient blood supply through the extracorporeal bypass device. The use of the extracorporeal bypass device can effectively protect the blood flow to the brain and avoid cerebral ischemia and neurological complications that may occur during the operation;

[0003] The patent document with Chinese patent publication number CN110237328A discloses a temporary extracorporeal arteriovenous shunt device to solve the problems of short follow-up time, small number of cases and low success rate of infrapopliteal artery. However, the comparative document still has the following defects in actual use. First, the stability of the vascular sheath cannot be effectively ensured, which leads to the loosening of the connection between the vascular sheath and the patient's blood vessels during the operation; second, since the patient may experience body tremors during the operation, the tremors will aggravate the swing of the vascular sheath, making it easier for the puncture needle inside the vascular sheath to pierce the blood vessel, causing danger, resulting in interruption of the operation and endangering the patient's health. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: the inability to effectively ensure the stability of the vascular sheath, which leads to the loosening of the connection between the vascular sheath and the patient's blood vessel during the operation; secondly, since the patient may experience body tremors during the operation, the tremors will aggravate the swing of the vascular sheath, making it easier for the puncture needle inside the vascular sheath to pierce the blood vessel, causing danger, resulting in interruption of the operation and endangering the patient's health.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A temporary extracorporeal flow diversion device for a three-windowed arch body, comprising a power device, a mounting tube, a vascular sheath and a fixing assembly, and also comprising two return tubes fixedly mounted on the front of the power device, and a driving mechanism threadedly mounted on one end of the mounting tube, wherein a puncture needle extending into the interior of the mounting tube is movably mounted inside the vascular sheath, and a threaded rod is fixedly mounted on one end of the puncture needle, and the threaded rod extends into the interior of the driving mechanism;

[0007] The fixing assembly is fixedly installed on one side of the driving mechanism, and the driving mechanism is transmission-connected with the fixing assembly and the threaded rod. When the driving mechanism drives the fixing assembly to automatically unfold the clamp installation to lock the position of the vascular sheath, the driving mechanism drives the puncture needle to move and retract into the vascular sheath through the threaded rod.

[0008] Preferably, an expansion balloon is sleeved on one end of the outer side of the vascular sheath, an inflation tube extending to the inside of the expansion balloon is fixedly installed inside the vascular sheath, one end of the inflation tube passes through the mounting tube, and a first balloon ball is fixedly installed on the extended end of the inflation tube passing through the inner wall of the mounting tube.

[0009] Preferably, the fixing component includes a mounting frame fixedly mounted on one side of the driving mechanism, a cover plate is installed on one side of the mounting frame by bolts, equidistant limiting rollers are rotatably mounted inside the fixing component, a first toothed curved ring and a second toothed curved ring are rotatably mounted inside the fixing component by the limiting rollers, a fastening airbag is fixedly mounted on the inner side of the mounting frame, and a second airbag ball is installed on one side of the fastening airbag through a pipe.

[0010] Preferably, the driving mechanism includes a mounting cover fixedly mounted on one side of the top of the mounting frame, a threaded sleeve is rotatably mounted on one side of the mounting cover, a nut sleeve is rotatably mounted on the inner wall of the mounting cover, a third bevel gear is fixedly mounted on one end of the nut sleeve, and a threaded rod passes through the third bevel gear, wherein the threaded rod is threadedly connected to the nut sleeve, a two-way transmission mechanism extending to the interior of the mounting frame is rotatably mounted inside the mounting cover, an active bevel gear is rotatably mounted on the bottom of the mounting cover, and the active bevel gear is transmission-connected to the two-way transmission mechanism, a driven bevel gear assembly is meshedly connected to the top of one end of the two-way transmission mechanism, and the top of the driven bevel gear assembly is meshedly connected to the third bevel gear.

[0011] Preferably, the bidirectional transmission mechanism includes a first bevel gear rotatably mounted on the inner wall of the mounting frame, a first gear is mounted on one end of the first bevel gear through a shaft tube, a transmission shaft is installed through the first bevel gear and the interior of the first gear, a second bevel gear is fixedly mounted on one end of the transmission shaft, and a second gear is fixedly mounted on the other end of the transmission shaft, the bottoms of the second bevel gear and the first bevel gear are both meshed and connected with the active bevel gear, and the top of the first bevel gear is meshed and connected with the bottom of the driven bevel gear assembly, wherein the second gear is meshed and connected with the first tooth groove curved ring, and the first gear is meshed and connected with the second tooth groove curved ring.

[0012] Preferably, the power device consists of an installation box and a controller, the controller is fixedly installed on the top of the installation box, a power pump is embedded in the front of the installation box, the output end of the power pump is connected to the oxygenator through a pipeline, the two sides of the top of the oxygenator are respectively connected to the heat exchanger and the filter through two pipelines, one side of the filter is connected to the oxygen pump through a pipeline, and one end of the heat exchanger is connected to the return pipe through a pipeline.

[0013] Preferably, a control valve is installed at the input end of the power pump through a pipeline, a shunt tube is fixedly installed at one end of the control valve, and one end of the shunt tube extends to the inside of the installation tube and is connected to one end of the vascular sheath through a connecting sleeve.

[0014] Preferably, the driven bevel gear assembly consists of a shaft and two bevel gears, and the two bevel gears are fixedly mounted on both ends of the shaft respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention drives the threaded rod to move and drives the fixing assembly to automatically expand and close simultaneously through the driving mechanism, the driving mechanism controls the horizontal reciprocating movement of the threaded rod, drives the puncture needle to move to the inside of the vascular sheath for recovery, and prevents the puncture needle from penetrating the blood vessel, and at the same time drives the fixing assembly to automatically expand the clamp to firmly fix it to the patient's arm, so that the vascular sheath remains stable, preventing tremor or other factors from causing the blood vessel to loosen or rupture, ensuring the safety of the patient's blood vessels during the operation, effectively avoiding the risk of cerebral ischemia and neurological complications, and successfully completing the arch body three-window surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of the installation tube of the present invention;

[0019] Figure 4 This is a schematic diagram of the puncture needle recovery state of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the vascular sheath of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the fixed component of the present invention;

[0022] Figure 7 It is a schematic diagram of the driving mechanism structure of the present invention;

[0023] Figure 8 It is a schematic diagram of the internal structure of the driving mechanism of the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the bidirectional transmission mechanism of the present invention;

[0025] Fig.10 It is a schematic diagram of the internal structure of the power device of the present invention.

[0026] In the figure: 1, power device; 101, installation box; 102, controller; 103, power pump; 104, oxygenator; 105, heat exchanger; 106, filter; 107, oxygen pump; 2, return pipe; 3, installation pipe; 301, transfer pipe; 302, control valve; 4, vascular sheath; 401, expansion balloon; 402, inflation tube; 403, first balloon ball; 404, puncture needle; 405, threaded rod; 5, driving mechanism; 501, installation cover; 502, threaded sleeve; 503, Bidirectional transmission mechanism; 5031, first bevel gear; 5032, first gear; 5033, transmission shaft; 5034, second bevel gear; 5035, second gear; 504, nut sleeve; 505, third bevel gear; 506, driven bevel gear assembly; 507, active bevel gear; 6, fixing assembly; 601, mounting frame; 602, fastening airbag; 603, second airbag ball; 604, first tooth groove curved ring; 605, second tooth groove curved ring; 606, cover plate; 607, limiting roller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1 - Fig.10 The present invention proposes a temporary extracorporeal flow diversion device for the three-windowed arch body, comprising a power device 1, a mounting tube 3, a vascular sheath 4 and a fixing assembly 6, and also comprising two return tubes 2 fixedly mounted on the front of the power device 1, and a driving mechanism 5 threadedly mounted on one end of the mounting tube 3, a puncture needle 404 extending into the interior of the mounting tube 3 is movably mounted inside the vascular sheath 4, a threaded rod 405 is fixedly mounted on one end of the puncture needle 404, and the threaded rod 405 extends into the interior of the driving mechanism 5;

[0031] The fixing assembly 6 is fixedly installed on one side of the driving mechanism 5, and the driving mechanism 5 is in transmission connection with the fixing assembly 6 and the threaded rod 405. When the driving mechanism 5 drives the fixing assembly 6 to automatically unfold the clamp installation to lock the position of the vascular sheath 4, the driving mechanism 5 drives the puncture needle 404 to move and retract into the vascular sheath 4 through the threaded rod 405.

[0032] Among them, the outer sides of one end of the two return tubes 2 are sleeved with flowmeters, and the flow rate of the blood circulating in the two return tubes 2 is measured by the flowmeter, and one end of the two return tubes 2 passing through the flowmeter is connected to the heat exchanger 105 through a pipeline, and the driving mechanism 5 drives the threaded rod 405 to move horizontally back and forth and drives the fixing component 6 to automatically expand and retract, and the horizontally moving threaded rod 405 drives the puncture needle 404 to move into the vascular sheath 4 to achieve the recovery of the puncture needle 404, so as to prevent the puncture needle 404 from penetrating the blood vessel, and the puncture needle 404 retracted into the vascular sheath 4 is also convenient for the circulation device to store and transport, and prevent the puncture needle 404 from breaking through the sealed packaging bag; when the puncture needle 404 is retracted into the vascular sheath 4, the driving mechanism 5 drives the fixing component 6 to automatically expand the clamp and install it on the patient's arm, and the position of the vascular sheath 4 is locked by the clamp installation of the fixing component 6 to ensure that the vascular sheath 4 remains stable during the operation;

[0033] When the threaded rod 405 of the driving mechanism 5 moves horizontally in the opposite direction, it drives the puncture needle 404 to extend out of the interior of the vascular sheath 4, so that the vascular sheath 4 can puncture the blood vessel through the puncture needle 404 to draw blood out of the body, and then return blood to the body through the reflux tube 2 after being processed by the power device 1, thereby realizing extracorporeal circulation of blood; while the puncture needle 404 extends out of the interior of the vascular sheath 4, the driving mechanism 5 drives the fixing assembly 6 to be stored, thereby reducing the storage space of the fixing assembly 6.

[0034] like Figure 4 , Figure 5 As shown, an expansion balloon 401 is sleeved on one end of the outer side of the vascular sheath 4, and an inflation tube 402 extending to the inside of the expansion balloon 401 is fixedly installed inside the vascular sheath 4, one end of the inflation tube 402 passes through the mounting tube 3, and a first balloon ball 403 is fixedly installed on the extended end of the inflation tube 402 passing through the inner wall of the mounting tube 3;

[0035] After the vascular sheath 4 punctures the blood vessel, the first balloon ball 403 is squeezed multiple times to inflate the expansion balloon 401 through the inflation tube 402. The inflated expansion balloon 401 inflates the blood vessel to block and intercept blood, making it easier to perform surgery on the aortic arch.

[0036] like Figure 6 , Figure 7 As shown, the fixing assembly 6 includes a mounting frame 601 fixedly mounted on one side of the driving mechanism 5, a cover plate 606 is mounted on one side of the mounting frame 601 by bolts, an equidistant limiting roller 607 is rotatably mounted inside the fixing assembly 6, a first toothed curved ring 604 and a second toothed curved ring 605 are rotatably mounted inside the fixing assembly 6 by the limiting roller 607, a fastening airbag 602 is fixedly mounted on the inner side of the mounting frame 601, and a second airbag ball 603 is mounted on one side of the fastening airbag 602 by a pipe;

[0037] The first toothed curved ring 604 and the second toothed curved ring 605 are movably installed by the cooperation of the mounting frame 601 and the cover plate 606, and the rotational friction of the first toothed curved ring 604 and the second toothed curved ring 605 is reduced by the limiting roller 607, the first toothed curved ring 604 and the second toothed curved ring 605 are relatively rotated in the opposite direction to extend out of the mounting frame 601, and the extended ends of the first toothed curved ring 604 and the second toothed curved ring 605 are butted, the mounting frame 601 forms a closed circular ring with the first toothed curved ring 604 and the second toothed curved ring 605, and is sleeved on the patient's arm through the closed circular ring, and then the fastening airbag 602 is inflated by pressing the second airbag ball 603 for multiple times, and the specifications of the circular ring are adjusted by using the inflated fastening airbag 602 to ensure that the circular ring is firmly fixed on the patient's arm.

[0038] like Figure 7 , Figure 8As shown, the driving mechanism 5 includes a mounting cover 501 fixedly mounted on one side of the top of the mounting frame 601, a threaded sleeve 502 is rotatably mounted on one side of the mounting cover 501, a nut sleeve 504 is rotatably mounted on the inner wall of the mounting cover 501, a third bevel gear 505 is fixedly mounted on one end of the nut sleeve 504, and a threaded rod 405 penetrates the third bevel gear 505, wherein the threaded rod 405 is threadedly connected with the nut sleeve 504, a two-way transmission mechanism 503 extending to the inside of the mounting frame 601 is rotatably mounted inside the mounting cover 501, an active bevel gear 507 is rotatably mounted on the bottom of the mounting cover 501, and the active bevel gear 507 is transmission-connected with the two-way transmission mechanism 503, a driven bevel gear assembly 506 is meshedly connected at the top of one end of the two-way transmission mechanism 503, and the top of the driven bevel gear assembly 506 is meshedly connected with the third bevel gear 505;

[0039] Among them, after the rotatably installed nut sleeve 504 is threadedly connected to one end of the mounting tube 3, the mounting cover 501 can also be rotated, so that the orientation of the fixing component 6 can be rotated and adjusted according to the installation requirements of the fixing component 6. A knob is fixedly installed at the bottom of the active bevel gear 507. The knob is held to drive the active bevel gear 507 to rotate. The rotating active bevel gear 507 drives the two-way transmission mechanism 503 to drive. The two-way transmission mechanism 503 is used to drive the first tooth groove curved ring 604 and the second tooth groove curved ring 605 that are meshed and connected to rotate in opposite directions. At the same time, the rotating two-way transmission mechanism 503 drives the third bevel gear 505 to rotate through the driven bevel gear assembly 506, and the rotating third bevel gear 505 drives the threaded rod 405 to move through the nut sleeve 504.

[0040] like Figure 8 , Fig. 9 As shown, the bidirectional transmission mechanism 503 includes a first bevel gear 5031 rotatably mounted on the inner wall of the mounting frame 601, a first gear 5032 is mounted on one end of the first bevel gear 5031 through a shaft tube, a transmission shaft 5033 is installed inside the first bevel gear 5031 and the first gear 5032, a second bevel gear 5034 is fixedly mounted on one end of the transmission shaft 5033, and a second gear 5035 is fixedly mounted on the other end of the transmission shaft 5033, the bottoms of the second bevel gear 5034 and the first bevel gear 5031 are meshed and connected with the active bevel gear 507, the top of the first bevel gear 5031 is meshed and connected with the bottom of the driven bevel gear assembly 506, wherein the second gear 5035 is meshed and connected with the first tooth groove curved ring 604, and the first gear 5032 is meshed and connected with the second tooth groove curved ring 605;

[0041] The rotating active bevel gear 507 drives the first bevel gear 5031 and the second bevel gear 5034 to rotate in opposite directions respectively. When the first bevel gear 5031 rotates in the opposite direction, the second bevel gear 5034 rotates in the forward direction. The first bevel gear 5031 that rotates in the reverse direction drives the first gear 5032 to rotate in the reverse direction through the shaft tube. The second bevel gear 5034 that rotates in the forward direction drives the second gear 5035 to rotate in the forward direction through the transmission shaft 5033. The first gear 5032 that rotates in the reverse direction and the second gear 5035 that rotates in the forward direction respectively drive the first toothed curved ring 604 to rotate in the reverse direction and the second toothed curved ring 605 to rotate in the forward direction to extend out of the interior of the mounting frame 601.

[0042] When the first bevel gear 5031 rotates forward, the second bevel gear 5034 rotates reversely. The forward rotating first bevel gear 5031 drives the first gear 5032 to rotate forward through the shaft tube, and the reverse rotating second bevel gear 5034 drives the second gear 5035 to rotate reversely through the transmission shaft 5033. The forward rotating first gear 5032 and the reverse rotating second gear 5035 respectively drive the first toothed curved ring 604 to rotate forward and the second toothed curved ring 605 to rotate reversely and retract into the interior of the mounting frame 601.

[0043] like Fig.10 As shown, the power device 1 consists of an installation box 101 and a controller 102. The controller 102 is fixedly installed on the top of the installation box 101. A power pump 103 is embedded and installed on the front of the installation box 101. The output end of the power pump 103 is connected to the oxygenator 104 through a pipeline. The two sides of the top of the oxygenator 104 are respectively connected to the heat exchanger 105 and the filter 106 through two pipelines. One side of the filter 106 is connected to the oxygen pump 107 through a pipeline, and one end of the heat exchanger 105 is connected to the return pipe 2 through a pipeline.

[0044] The controller 102 controls the power pump 103 to generate suction, open the control valve 302, and deliver the blood transported by the vascular sheath 4 to the oxygenator 104 through the shunt tube 301. At the same time, the oxygen pump 107 is powered on to deliver oxygen to the filter 106 for filtration and then to the oxygenator 104. The oxygenator 104 mixes oxygen with blood, and the oxygenated blood is heated by the heat exchanger 105 and then delivered to the patient through the reflux tube 2.

[0045] like Figure 1 , Figure 2 As shown, a control valve 302 is installed at the input end of the power pump 103 through a pipeline, a shunt tube 301 is fixedly installed at one end of the control valve 302, and one end of the shunt tube 301 extending to the inside of the installation tube 3 is connected to one end of the vascular sheath 4 through a connecting sleeve;

[0046] When the control valve 302 is opened, the suction force generated by the power pump 103 delivers the blood transported by the vascular sheath 4 to the oxygenator 104 through the shunt tube 301 .

[0047] like Figure 8 As shown, the driven bevel gear assembly 506 is composed of a shaft and two bevel gears, and the two bevel gears are fixedly mounted on both ends of the shaft;

[0048] The bevel gears at the bottom of the shaft are meshed with the first bevel gear 5031 , and the bevel gears at the top of the shaft are meshed with the third bevel gear 505 . The driven bevel gear assembly 506 is used to transmit the rotational power of the first bevel gear 5031 to the third bevel gear 505 .

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A temporary extracorporeal flow bypass device for a bow body with three windows, comprising a power device (1), a mounting tube (3), a vascular sheath (4) and a fixing assembly (6), characterized in that: It also includes two return pipes (2) fixedly mounted on the front of the power device (1), and a driving mechanism (5) threadedly mounted on one end of the mounting pipe (3), wherein a puncture needle (404) extending into the interior of the mounting pipe (3) is movably mounted inside the vascular sheath (4), and a threaded rod (405) is fixedly mounted on one end of the puncture needle (404), and the threaded rod (405) extends into the interior of the driving mechanism (5); The fixing assembly (6) is fixedly mounted on one side of the driving mechanism (5), and the driving mechanism (5) is in transmission connection with the fixing assembly (6) and the threaded rod (405). When the driving mechanism (5) drives the fixing assembly (6) to automatically unfold the clamp installation to lock the position of the vascular sheath (4), the driving mechanism (5) drives the puncture needle (404) to move and retract into the interior of the vascular sheath (4) through the threaded rod (405).

2. A temporary extracorporeal flow bypass device for a bow body with three windows according to claim 1, characterized in that: An expansion balloon (401) is sleeved on one end of the outer side of the vascular sheath (4), and an inflation tube (402) extending to the inside of the inflation balloon (401) is fixedly installed inside the vascular sheath (4), one end of the inflation tube (402) passes through the mounting tube (3), and a first balloon ball (403) is fixedly installed on the extended end of the inflation tube (402) passing through the inner wall of the mounting tube (3).

3. A temporary extracorporeal flow bypass device with three windows in the bow body according to claim 1, characterized in that: The fixing assembly (6) comprises a mounting frame (601) fixedly mounted on one side of the driving mechanism (5); a cover plate (606) is mounted on one side of the mounting frame (601) by means of bolts; equidistant limiting rollers (607) are rotatably mounted inside the fixing assembly (6); a first toothed curved ring (604) and a second toothed curved ring (605) are rotatably mounted inside the fixing assembly (6) by means of the limiting rollers (607); a fastening airbag (602) is fixedly mounted on the inner side of the mounting frame (601); and a second airbag ball (603) is mounted on one side of the fastening airbag (602) by means of a pipe.

4. A temporary extracorporeal flow bypass device for a bow body with three windows according to claim 3, characterized in that: The driving mechanism (5) comprises a mounting cover (501) fixedly mounted on one side of the top of the mounting frame (601); a threaded sleeve (502) is rotatably mounted on one side of the mounting cover (501); a nut sleeve (504) is rotatably mounted on the inner wall of the mounting cover (501); a third bevel gear (505) is fixedly mounted on one end of the nut sleeve (504); and a threaded rod (405) passes through the third bevel gear (505); wherein the threaded rod (405) is threadedly connected to the nut sleeve (504); A bidirectional transmission mechanism (503) extending to the inside of the mounting frame (601) is rotatably installed inside the mounting cover (501), an active bevel gear (507) is rotatably installed at the bottom of the mounting cover (501), and the active bevel gear (507) is transmission-connected with the bidirectional transmission mechanism (503), a driven bevel gear assembly (506) is meshedly connected at the top of one end of the bidirectional transmission mechanism (503), and a top of the driven bevel gear assembly (506) is meshedly connected with the third bevel gear (505).

5. A temporary extracorporeal flow bypass device for a bow body with three windows according to claim 4, characterized in that: The bidirectional transmission mechanism (503) comprises a first bevel gear (5031) rotatably mounted on the inner wall of the mounting frame (601); a first gear (5032) is mounted on one end of the first bevel gear (5031) via a shaft tube; a transmission shaft (5033) is installed through the first bevel gear (5031) and the first gear (5032); a second bevel gear (5034) is fixedly mounted on one end of the transmission shaft (5033); a second gear (5035) is fixedly mounted on the other end of the transmission shaft (5033); the bottoms of the second bevel gear (5034) and the first bevel gear (5031) are meshedly connected to the active bevel gear (507); the top of the first bevel gear (5031) is meshedly connected to the bottom of the driven bevel gear assembly (506); wherein the second gear (5035) is meshedly connected to the first toothed curved ring (604); and the first gear (5032) is meshedly connected to the second toothed curved ring (605).

6. A temporary extracorporeal flow bypass device with three windows in the bow body according to claim 1, characterized in that: The power device (1) is composed of an installation box (101) and a controller (102). The controller (102) is fixedly installed on the top of the installation box (101). A power pump (103) is embedded and installed on the front of the installation box (101). The output end of the power pump (103) is connected to an oxygenator (104) through a pipeline. The two sides of the top of the oxygenator (104) are respectively connected to a heat exchanger (105) and a filter (106) through two pipelines. One side of the filter (106) is connected to an oxygen pump (107) through a pipeline, and one end of the heat exchanger (105) is connected to a return pipe (2) through a pipeline.

7. A temporary extracorporeal flow bypass device for use with three windows in the bow body according to claim 6, characterized in that: The input end of the power pump (103) is installed with a control valve (302) through a pipeline, and a shunt tube (301) is fixedly installed at one end of the control valve (302), and one end of the shunt tube (301) extending to the inside of the installation tube (3) is connected to one end of the vascular sheath (4) through a connecting sleeve.

8. A temporary extracorporeal flow bypass device for use with three windows in the bow body according to claim 4, characterized in that: The driven bevel gear assembly (506) consists of a shaft and two bevel gears, and the two bevel gears are fixedly mounted on both ends of the shaft respectively.

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