Extracorporeal membrane oxygenation catheter fixing device

Abstract

The invention discloses an extracorporeal membrane lung oxygenation catheter fixing device, and belongs to the field of medical instruments, the extracorporeal membrane lung oxygenation catheter fixing device comprises a forward wire arrangement unit and a reverse wire arrangement unit, the forward wire arrangement unit and the reverse wire arrangement unit are arranged in a linear array mode, the forward wire arrangement unit and the reverse wire arrangement unit are arranged at intervals, and the forward wire arrangement unit and the reverse wire arrangement unit are arranged in a linear array mode. The forward wire arranging unit is located below the reverse wire arranging unit, binding bands are arranged at the two ends of the forward wire arranging unit and the two ends of the reverse wire arranging unit respectively, a forward conveying belt is arranged in the forward wire arranging unit in a sleeved mode, and a reverse conveying belt is arranged in the reverse wire arranging unit in a sleeved mode. The forward conveying belt and the reverse conveying belt are respectively provided with a guiding mechanism, and a connecting rod is arranged between the forward wire arranging unit and the reverse wire arranging unit. The ECMO pipeline can be effectively combed and fixed, the influence on patients and medical staff is reduced, and the life safety of the patients is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and specifically refers to an extracorporeal membrane oxygenation catheter fixing device. Background Art

[0002] Extracorporeal membrane oxygenation, also known as ECMO, is a medical technology that is mainly used to provide continuous extracorporeal respiratory and circulatory support to patients with severe cardiopulmonary failure in order to maintain the patient's life. ECMO is mainly divided into veno-arterial ECMO (VAECMO) and veno-venous ECMO (VVECMO). VAECMO usually involves cannulation of the femoral vein and femoral artery at the roots of both thighs, while supporting cardiopulmonary function, and is commonly used in cardiogenic shock or cardiopulmonary failure. VVECMO usually involves cannulation of the neck, which only supports lung function, and is commonly used in severe respiratory failure. ECMO tubing is usually longer, and longer tubing is more inconvenient for medical staff to perform later operations and for patients to engage in daily life and minor activities. If it is not effectively fixed, it will affect the safe use of ECMO and may even endanger the patient's life. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an extracorporeal membrane oxygenation catheter fixing device, which can effectively sort out and fix the ECMO pipeline, reduce the impact on patients and medical staff, and ensure the life safety of patients.

[0004] The technical solution adopted by the present invention is as follows: An extracorporeal membrane oxygenation catheter fixing device provided by the present invention includes a forward wire management unit and a reverse wire management unit, the forward wire management unit and the reverse wire management unit are arranged in a linear array, the forward wire management unit and the reverse wire management unit are arranged at intervals from each other, the forward wire management unit is located below the reverse wire management unit, both ends of the forward wire management unit and the reverse wire management unit are respectively provided with straps, a forward conveying belt is sleeved inside the forward wire management unit, a reverse conveying belt is sleeved inside the reverse wire management unit, guiding mechanisms are respectively provided on the forward conveying belt and the reverse conveying belt, and a connecting rod is provided between the forward wire management unit and the reverse wire management unit.

[0005] Furthermore, the forward cable management unit includes a front plate, a rear plate, a roller bin and an arc-shaped clamping groove, the front plate and the rear plate are symmetrically arranged, the roller bins are symmetrically arranged on both sides of the front plate and the rear plate, the roller bins are opened on the opposite sides of the other roller bin, a soft plate is arranged between the roller bins and the front plate and the rear plate, the soft plate serves as a connection, the arc-shaped clamping groove is arranged on a side of one of the roller bins close to the front plate, a conveying groove is opened on the front plate and the soft plate located between the front plate and the arc-shaped clamping groove, and a clamping groove is opened on the top wall and the bottom wall of the conveying groove.

[0006] Furthermore, the reverse wiring unit has the same structure as the forward wiring unit and is arranged opposite to the left and right.

[0007] Furthermore, a transmission roller 1 is rotatably provided in the roller bin of the forward wiring unit, and a single-row groove is provided on the circumferential side wall of the transmission roller 1; a transmission roller 2 is rotatably provided in the roller bin of the reverse wiring unit, and a double-row groove is provided on the circumferential side wall of the transmission roller 2.

[0008] Furthermore, the forward conveying belt includes a belt 1, the two ends of which are respectively sleeved on the outside of a transmission roller 1, the outer wall of the belt 1 is provided with a transmission tooth 1, the outer wall of the belt 1 is also provided with a positioning block 1, the positioning block 1 is slidably arranged in the conveying groove of the forward cable management unit and fits with the conveying groove, the top wall and the bottom wall of the positioning block 1 are respectively provided with a clamping block 1, the clamping block 1 is slidably arranged in the clamping groove, and a screw hole 1 is opened on the side of the positioning block 1 away from the belt 1.

[0009] Furthermore, the reverse conveying belt includes a second belt, the two ends of which are respectively sleeved on the outside of the second transmission roller, the outer wall of the second belt is provided with a transmission tooth, the middle part of the second belt is provided with a hollow layer, the side wall of the first belt away from the front plate is provided with a connecting plate, the side of the connecting plate close to the front plate is provided with a positioning block two, the positioning block two extends through the hollow layer toward the front plate, the positioning block two is slidably arranged in the conveying groove of the reverse wiring unit and fits with the conveying groove, the top wall and the bottom wall of the second positioning block are respectively provided with a clamping block two, the clamping block two is slidably arranged in the clamping groove, and the side of the second positioning block away from the connecting plate is provided with a screw hole two.

[0010] Furthermore, the guiding mechanism includes a positioning wheel and a screw, wherein the screw is arranged on the side of the positioning wheel close to the front plate, and the screw is threadedly engaged with screw hole one and screw hole two respectively. A wire pulling groove is provided on the circumferential side wall of the positioning wheel, and an operating hole is provided on the side of the positioning wheel away from the front plate.

[0011] Furthermore, the arc line of the arc-shaped clamping groove fits with the circumferential side wall of the positioning wheel, an extension rod is provided on the side of the arc-shaped clamping groove away from the roller bin, a fixed shaft is provided on the end of the extension rod close to the roller bin, the fixed shaft fits with the operating hole, and the extension rod is made of elastic material.

[0012] Furthermore, the forward wiring unit at the bottom is provided with a bottom plate, which connects the front plate and the rear plate, and the reverse wiring unit at the top is provided with a top plate, which connects the front plate and the rear plate, and a cylindrical gear is rotatably provided between the top plate and the bottom plate, and the cylindrical gear is respectively engaged with transmission tooth one and transmission tooth two, and a handle is provided on the top of the top plate.

[0013] Furthermore, the topmost reverse wiring unit is not provided with an arc-shaped clamping groove, and a clamping clamp is rotatably provided on the roller bin side wall, and the clamping clamp is used to fix the starting end of the ECMO catheter winding.

[0014] Preferably, the inner wall of the clamping clip, the inner wall of the wire pulling groove, and the inner wall of the arc-shaped clamping groove are all made of a material with greater friction, such as rubber.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: the extracorporeal membrane oxygenation catheter fixing device provided by the present invention can be fixed and used by a strap on the side of the thigh or the side of the trunk according to the intubation position of the patient. At the same time, the setting of the soft board can enable the present invention to be bent to a certain extent, so that it fits the patient's body better. The present invention is fixed to the patient's body by a strap, and the starting end of the catheter winding is clamped and fixed by a clamping clamp. Then, the catheter is passed through the wire pulling grooves of each guide mechanism in an S shape (the catheter should be located between the guide mechanism and the arc-shaped clamping groove during the threading process). After the threading is completed, the handle is turned to drive the cylindrical gear to rotate, and the cylindrical gear drives the forward conveying belt and the reverse conveying belt to drive the guide mechanisms on the forward wire management unit and the reverse wire management unit respectively. The guide mechanism moves in the opposite direction until the positioning wheel fits with each arc-shaped clamping groove to firmly clamp the catheter and perform S-shaped winding on the catheter. During the contact process, the positioning wheel pushes the fixed shaft open. After the positioning wheel fits with the arc-shaped clamping groove, the positioning shaft is inserted into the operating hole to limit the guide mechanism to prevent it from falling off. This method can effectively organize and fix the ECMO catheter that is too long, making the area around the patient tidier and reducing the risk of accidental contact between medical staff and patients. At the same time, the wearing method is more in line with the actual situation. The method of organizing and collecting the wires around the patient's torso is closer to the intubation wound and can move synchronously with the patient, which is more convenient for the patient to perform simple activities. In addition, the detachable design of the guide mechanism enables the present invention to flexibly adjust the collection length according to the length of the excess catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an extracorporeal membrane oxygenation catheter fixing device provided by the present invention; Figure 2 A schematic diagram of the structure of a forward line management unit provided by the present invention; Figure 3 for Figure 2 A partial enlarged view of part A in FIG. Figure 4 A schematic diagram of the structure of the forward conveying belt provided by the present invention; Figure 5 A schematic diagram of the structure of the guiding mechanism provided by the present invention; Figure 6 A cross-sectional view of a forward cable management unit provided by the present invention; Figure 7A schematic diagram of the structure of a reverse wiring unit provided by the present invention; Figure 8 for Figure 7 A partial enlarged view of part B in FIG. Fig. 9 This is a schematic structural diagram of the reverse conveying belt provided by the present invention.

[0017] Among them, 1. forward cable management unit, 2. reverse cable management unit, 3. binding belt, 4. cylindrical gear, 5. forward conveying belt, 6. reverse conveying belt, 7. guiding mechanism, 8. bottom plate, 9. top plate, 101. front plate, 102. rear plate, 103. roller bin, 104. soft plate, 105. conveying trough, 106. card slot, 1071. transmission roller 1, 1072. transmission roller 2, 108. arc clamping groove, 109. extension rod, 110. fixed Fixed axis, 111, connecting rod, 201, clamping clip, 401, handle, 501, belt one, 502, transmission tooth one, 503, positioning block one, 504, clamping block one, 505, screw hole one, 601, belt two, 602, transmission tooth two, 603, hollow layer, 604, connecting plate, 605, positioning block two, 606, clamping block two, 607, screw hole two, 701, positioning wheel, 702, wire pulling groove, 703, screw rod, 704, operating hole.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] like Figure 1-Figure 9As shown, an extracorporeal membrane oxygenation catheter fixing device provided by the present invention includes a forward cable management unit 1 and a reverse cable management unit 2, the forward cable management unit 1 and the reverse cable management unit 2 are arranged in a linear array, the forward cable management unit 1 and the reverse cable management unit 2 are arranged at intervals from each other, the forward cable management unit 1 is located below the reverse cable management unit 2, both ends of the forward cable management unit 1 and the reverse cable management unit 2 are respectively provided with straps 3, a forward conveying belt 5 is sleeved inside the forward cable management unit 1, a reverse conveying belt 6 is sleeved inside the reverse cable management unit 2, guiding mechanisms 7 are respectively provided on the forward conveying belt 5 and the reverse conveying belt 6, and a connecting rod 111 is provided between the forward cable management unit 1 and the reverse cable management unit 2.

[0022] The forward cable management unit 1 includes a front plate 101, a rear plate 102, a roller bin 103 and an arc-shaped clamping groove 108. The front plate 101 and the rear plate 102 are symmetrically arranged. The roller bins 103 are symmetrically arranged on both sides of the front plate 101 and the rear plate 102. The roller bins 103 are opened on the opposite sides of the other roller bin 103. A soft plate 104 is arranged between the roller bins 103 and the front plate 101 and the rear plate 102. The soft plate 104 plays a connecting role. The arc-shaped clamping groove 108 is arranged on a side of one of the roller bins 103 close to the front plate 101. A conveying groove 105 is opened on the front plate 101 and the soft plate 104 located between the front plate 101 and the arc-shaped clamping groove 108. The top wall and the bottom wall of the conveying groove 105 are opened with a clamping groove 106. The reverse cable management unit 2 has the same structure as the forward cable management unit 1 and is arranged oppositely on the left and right.

[0023] A transmission roller 1071 is rotatably installed in the roller compartment 103 of the forward cable management unit 1, and a single-row groove is provided on the circumferential side wall of the transmission roller 1071. A transmission roller 2 1072 is rotatably installed in the roller compartment 103 of the reverse cable management unit 2, and a double-row groove is provided on the circumferential side wall of the transmission roller 1072.

[0024] The forward conveying belt 5 includes a belt 501, both ends of which are respectively sleeved on the outside of a driving roller 1071, a driving tooth 502 is provided on the outer wall of the belt 501, and a positioning block 503 is also provided on the outer wall of the belt 501. The positioning block 503 is slidably arranged in the conveying groove 105 of the forward cable management unit 1 and fits with the conveying groove 105. The top wall and the bottom wall of the positioning block 503 are respectively provided with a clamping block 504, and the clamping block 504 is slidably arranged in the clamping groove 106. A screw hole 505 is provided on the side of the positioning block 503 away from the belt 501.

[0025] The reverse conveying belt 6 includes a second belt 601, both ends of which are respectively sleeved on the outside of the second transmission roller 1072, a second transmission tooth 602 is provided on the outer wall of the second belt 601, a hollow layer 603 is opened in the middle of the second belt 601, a connecting plate 604 is provided on the side wall of the belt 1 501 away from the front plate 101, and a positioning block 605 is provided on the side of the connecting plate 604 close to the front plate 101, the positioning block 605 passes through the hollow layer 603 and extends toward the front plate 101, the positioning block 605 is slidably arranged in the conveying groove 105 of the reverse wiring unit 2 and fits with the conveying groove 105, the top wall and the bottom wall of the positioning block 605 are respectively provided with a clamping block 606, the clamping block 606 is slidably arranged in the clamping groove 106, and a screw hole 607 is opened on the side of the positioning block 605 away from the connecting plate 604.

[0026] The guiding mechanism 7 includes a positioning wheel 701 and a screw 703. The screw 703 is arranged on the side of the positioning wheel 701 close to the front plate 101. The screw 703 is threadedly engaged with screw hole 1 505 and screw hole 2 607 respectively. A wire pulling groove 702 is provided on the circumferential side wall of the positioning wheel 701, and an operating hole 704 is provided on the side of the positioning wheel 701 away from the front plate 101.

[0027] The arc line of the arc-shaped clamping groove 108 fits with the circumferential side wall of the positioning wheel 701, and an extension rod 109 is provided on the side of the arc-shaped clamping groove 108 away from the roller bin 103. A fixed shaft 110 is provided on the end of the extension rod 109 close to the roller bin 103. The fixed shaft 110 fits with the operating hole 704, and the extension rod 109 is made of elastic material.

[0028] The forward cable management unit 1 at the bottom is provided with a bottom plate 8, which connects the front plate 101 and the rear plate 102. The reverse cable management unit 2 at the top is provided with a top plate 9, which connects the front plate 101 and the rear plate 102. A cylindrical gear 4 is rotatably provided between the top plate 9 and the bottom plate 8, and the cylindrical gear 4 is respectively engaged with the transmission tooth 1 502 and the transmission tooth 2 602. A handle 401 is provided on the top of the top plate 9.

[0029] The topmost reverse wire-managing unit 2 is not provided with an arc-shaped clamping groove 108, and the side wall of the roller bin 103 is rotatably provided with a clamping clamp 201, which is used to fix the starting end of the ECMO catheter winding.

[0030] Preferably, the inner wall of the clamping clip 201 , the inner wall of the wire pulling groove 702 , and the inner wall of the arc-shaped clamping groove 108 are all made of a material with greater friction, such as rubber.

[0031] When in use, first choose to use it on the side of the thigh or the side of the trunk according to the patient's intubation position (a single invention can only collect a single catheter, and usually ECMO patients will have two catheters inserted, so they need to be worn on the left leg, right leg, or left and right sides of the trunk respectively). After being fixed by the strap 3, the setting of the soft plate 104 can enable the invention to bend to a certain extent and fit the patient's body more closely. After wearing, the starting end of the catheter winding is clamped and fixed by the clamping clamp 201, and then the catheter is passed through the wire pulling groove 702 of each guide mechanism 7 in an S shape (the catheter should be located between the guide mechanism 7 and the arc-shaped clamping groove 108 during the threading process). After the threading is completed, turn the handle 401 to drive the cylindrical gear 4 to rotate. After wearing, the forward conveying belt 5 and the reverse conveying belt 6 will bend in the direction of the cylindrical gear 4, which can make the meshing of the transmission tooth 1 502 and the transmission tooth 2 602 with the cylindrical gear 4 more firmly. Since the positioning block 1 503 is arranged on the side of the belt 1 501 away from the cylindrical gear 4, and the positioning block 2 605 is arranged on the side of the belt 2 601 close to the cylindrical gear 4, when the cylindrical gear 4 drives the forward conveying belt 5 and the reverse conveying belt 6, it will respectively drive the guiding mechanisms 7 on the forward wiring unit 1 and the reverse wiring unit 2 to move in opposite directions, stretching the catheter to both sides until the positioning wheel 701 is in contact with each arc-shaped clamping groove 108, firmly clamping the catheter, and performing S-shaped winding and collection on the catheter. During the contact process between the positioning wheel 701 and the arc-shaped clamping groove 108, the positioning wheel 701 pushes the fixed shaft 110 open. After the positioning wheel 701 is in contact with the arc-shaped clamping groove 108, the positioning shaft is inserted into the operating hole 704 to limit the guiding mechanism 7 to prevent it from falling off. At the same time, according to the long end of the redundant catheter in practice, the guiding mechanism 7 is removed from bottom to top in sequence. The fewer the number of guiding mechanisms 7, the shorter the length that can be collected and wired.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An extracorporeal membrane oxygenation catheter fixing device, characterized in that: The invention comprises a forward cable management unit (1) and a reverse cable management unit (2), wherein the forward cable management unit (1) and the reverse cable management unit (2) are arranged in a linear array, the forward cable management unit (1) and the reverse cable management unit (2) are arranged at intervals from each other, the forward cable management unit (1) is located below the reverse cable management unit (2), two ends of the forward cable management unit (1) and the reverse cable management unit (2) are respectively provided with binding belts (3), the forward cable management unit (1) is internally sleeved with a forward conveying belt (5), the reverse cable management unit (2) is internally sleeved with a reverse conveying belt (6), the forward conveying belt (5) and the reverse conveying belt (6) are respectively provided with guiding mechanisms (7), and a connecting rod (111) is provided between the forward cable management unit (1) and the reverse cable management unit (2).

2. The extracorporeal membrane oxygenation catheter fixing device according to claim 1, characterized in that: The forward cable management unit (1) comprises a front plate (101), a rear plate (102), a roller bin (103) and an arc-shaped clamping groove (108); the front plate (101) and the rear plate (102) are symmetrically arranged; roller bins (103) are symmetrically arranged on both sides of the front plate (101) and the rear plate (102); the roller bins (103) are opened on the sides facing each other; and a roller bin (103) is arranged between the roller bin (103) and the front plate (101) and the rear plate (102). A soft plate (104) is provided, the arc-shaped clamping groove (108) is arranged on one side of one of the roller bins (103) close to the front plate (101), a conveying groove (105) is provided on the front plate (101) and the soft plate (104) between the front plate (101) and the arc-shaped clamping groove (108), a clamping groove (106) is provided on the top wall and the bottom wall of the conveying groove (105), and the reverse wiring unit (2) has the same structure as the forward wiring unit (1) and is arranged opposite to each other on the left and right.

3. The extracorporeal membrane oxygenation catheter fixing device according to claim 2, characterized in that: A transmission roller 1 (1071) is rotatably arranged in the roller compartment (103) of the forward cable management unit (1), and a single-row groove is provided on the circumferential side wall of the transmission roller 1 (1071). A transmission roller 2 (1072) is rotatably arranged in the roller compartment (103) of the reverse cable management unit (2), and a double-row groove is provided on the circumferential side wall of the transmission roller 2 (1072).

4. The extracorporeal membrane oxygenation catheter fixing device according to claim 3, characterized in that: The side wall of the roller bin (103) of the topmost reverse cable management unit (2) which is not provided with an arc-shaped clamping groove (108) is rotatably provided with a clamping clamp (201).

5. The extracorporeal membrane oxygenation catheter fixing device according to claim 4, characterized in that: The forward conveying belt (5) comprises a belt 1 (501), the two ends of which are respectively sleeved on the outside of a transmission roller 1 (1071), the outer wall of the belt 1 (501) is provided with a transmission tooth 1 (502), the outer wall of the belt 1 (501) is also provided with a positioning block 1 (503), the positioning block 1 (503) is slidably arranged in a conveying groove (105) of the forward cable management unit (1) and is in contact with the conveying groove (105), the top wall and the bottom wall of the positioning block 1 (503) are respectively provided with a clamping block 1 (504), the clamping block 1 (504) is slidably arranged in the clamping groove (106), and a screw hole 1 (505) is provided on a side of the positioning block 1 (503) away from the belt 1 (501).

6. The extracorporeal membrane oxygenation catheter fixing device according to claim 5, characterized in that: The reverse conveying belt (6) comprises a second belt (601), the two ends of the second belt (601) are respectively sleeved on the outside of the second transmission roller (1072), the outer wall of the second belt (601) is provided with a second transmission tooth (602), the middle of the second belt (601) is provided with a hollow layer (603), the side wall of the first belt (501) away from the front plate (101) is provided with a connecting plate (604), and the side of the connecting plate (604) close to the front plate (101) is provided with a second positioning block (605). ), the second positioning block (605) passes through the hollow layer (603) and extends toward the front plate (101), the second positioning block (605) is slidably disposed in the conveying groove (105) of the reverse wiring unit (2) and is in contact with the conveying groove (105), the top wall and the bottom wall of the second positioning block (605) are respectively provided with a second clamping block (606), the second clamping block (606) is slidably disposed in the clamping groove (106), and a second screw hole (607) is provided on a side of the second positioning block (605) away from the connecting plate (604).

7. The extracorporeal membrane oxygenation catheter fixing device according to claim 6, characterized in that: An extension rod (109) is provided on the side of the arc-shaped clamping groove (108) away from the roller bin (103), a fixed shaft (110) is provided at the end of the extension rod (109) close to the roller bin (103), the fixed shaft (110) is fitted with the operating hole (704), and the extension rod (109) is made of elastic material.

8. The extracorporeal membrane oxygenation catheter fixing device according to claim 7, characterized in that: The guide mechanism (7) comprises a positioning wheel (701) and a screw rod (703); the screw rod (703) is arranged on a side of the positioning wheel (701) close to the front plate (101); the screw rod (703) is threadedly engaged with screw hole 1 (505) and screw hole 2 (607) respectively; a wire pulling groove (702) is provided on a circumferential side wall of the positioning wheel (701); an operating hole (704) is provided on a side of the positioning wheel (701) away from the front plate (101); and an arc line of the arc-shaped clamping groove (108) is in contact with the circumferential side wall of the positioning wheel (701).

9. The extracorporeal membrane oxygenation catheter fixing device according to claim 8, characterized in that: The forward cable management unit (1) at the bottom is provided with a bottom plate (8), and the bottom plate (8) is connected to the front plate (101) and the rear plate (102). The reverse cable management unit (2) at the top is provided with a top plate (9), and the top plate (9) is connected to the front plate (101) and the rear plate (102). A cylindrical gear (4) is rotatably provided between the top plate (9) and the bottom plate (8), and the cylindrical gear (4) is respectively meshed with a first transmission tooth (502) and a second transmission tooth (602). A handle (401) is provided on the top of the top plate (9).

10. The extracorporeal membrane oxygenation catheter fixing device according to claim 9, characterized in that: The inner wall of the clamping clamp (201), the inner wall of the wire pulling groove (702), and the inner wall of the arc-shaped clamping groove (108) are all made of a material with relatively large friction, such as rubber.

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