Anti-collision sensing device of ECMO centrifugal pump

Abstract

The invention discloses an ECMO centrifugal pump anti-collision induction device, and relates to the field of centrifugal pump anti-collision, the ECMO centrifugal pump anti-collision induction device comprises a machine body, a pump body, an induction terminal and a motor, the pump body is fixedly installed at one end of the machine body, the motor is fixedly installed at the other end of the machine body, and the induction terminal is fixedly installed on one side of the machine body. A supporting mechanism is fixedly connected to the bottom of the machine body, and an anti-collision mechanism is fixedly installed at the end of the supporting mechanism. According to the device, when an external object gets close to or collides with the end of the motor, the external object firstly makes contact with the protection pad, the protection pad plays a preliminary role in buffering impact force, damage of impact to the motor and the whole centrifugal pump system is reduced, the service life of the device is prolonged, and due to the arc-shaped design of the first arc-shaped rod and the second arc-shaped rod, the device moves more smoothly during impact induction; friction loss between parts is reduced, the overall stability and reliability are improved, and the risk of equipment failure or medical negligence caused by collision is reduced.

Description

Technical Field

[0001] The present invention relates to the field of centrifugal pump anti-collision technology, and in particular to an ECMO centrifugal pump anti-collision sensing device. Background Art

[0002] ECMO, or extracorporeal membrane oxygenation, is a life support technology, and the ECMO centrifugal pump is one of the core components of the ECMO device, mainly used to drive blood to flow in the extracorporeal circulation system and maintain the patient's blood circulation.

[0003] For example, the "A centrifugal pump with protective function" with publication number CN116733750A includes a centrifugal pump body, a motor, a pump shaft and a protective box. The centrifugal pump body, the motor and the pump shaft are all located in the protective box. The liquid inlet of the centrifugal pump body passes through the protective box and is arranged at the front of the protective box. The liquid outlet of the centrifugal pump body passes through the protective box and is arranged at the upper part of the protective box. A filter protection device is provided at the front end of the liquid inlet. The motor drives the impeller inside the centrifugal pump body to rotate through the pump shaft. A transmission device is provided on the pump shaft, and the transmission device is connected to the filter protection device. A vent is opened at the right end of the protective box.

[0004] However, in the existing technology, the ECMO centrifugal pump is a key device for life support for critically ill patients, and its operational stability is of vital importance. However, there are many problems in the existing technology: insufficient impact protection, traditional protection structures mostly use rigid shells or single buffer materials, which cannot effectively disperse multi-angle impact forces, lack targeted protection for weak areas such as motor ends, impact sensing lag, existing sensing devices rely on a single sensor, it is difficult to accurately capture multi-dimensional data such as impact force and direction, and are prone to false alarms or missed reports, poor structural stability, lack of mechanical optimization of the connection between the support and anti-collision mechanism, long-term use can easily lead to loose components due to vibration, low degree of intelligence, and inability to achieve impact warning, equipment linkage and data traceability, making it difficult to meet clinical rapid response and safety management needs. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-collision sensing device for an ECMO centrifugal pump to solve the problems of incomplete collision protection, low sensing accuracy, poor structural stability and insufficient intelligence proposed in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an anti-collision sensing device for an ECMO centrifugal pump, comprising a body, a pump body, a sensing terminal, and a motor, wherein the pump body is fixedly mounted on one end of the body, the motor is fixedly mounted on the other end of the body, and the sensing terminal is fixedly mounted on one side of the body; a support mechanism is fixedly connected to the bottom of the body, an anti-collision mechanism is fixedly mounted on the end of the support mechanism, and the anti-collision mechanism is located at the end of the motor;

[0007] The anti-collision mechanism includes a protection pad arranged at the end of the motor, a positioning plate fixedly mounted on one side of the protection pad and a detector fixedly mounted on the supporting mechanism, a connecting block fixedly mounted at the center of the positioning plate, a first arc rod and a second arc rod being slidably connected on the outer wall of the connecting block, the first arc rod and the second arc rod being perpendicular to each other, the end of the first arc rod and the end of the second arc rod being fixedly mounted with a docking piece, the first arc rod and the second arc rod being arc-shaped, a measuring piece being fixedly mounted on one side of the docking piece, the curvature of the protection pad, the curvature of the first arc rod, the curvature of the second arc rod and the curvature of the docking piece are all the same, the measuring piece is connected to the detector signal, and the detector detects the displacement of the measuring piece when the measuring piece moves;

[0008] The support mechanism includes a support plate arranged on one side of the machine body, one end of the support plate is fixedly connected to a vertical plate perpendicular to itself, the movable rod is fixedly installed at the four edges of the vertical plate, and the detector is parallel to the docking piece, and the detector is located between the vertical plate and the docking piece.

[0009] Preferably, limiting grooves are provided on the inner sides of the first arc rod and the second arc rod, the connecting block is located on the inner sides of the limiting grooves, and arc-shaped convex strips are fixedly installed on the side surfaces of the connecting piece.

[0010] Preferably, a positioning bracket is fixedly installed on one side of the vertical plate, the positioning bracket is slidably connected to the arc-shaped convex strip, the positioning bracket is parallel to the docking piece, the docking piece is located on one side of the detector, and the detector is connected to the sensing terminal signal.

[0011] Preferably, a cavity is opened inside the protective pad, and a positioning rod is fixedly installed on the inner wall of the cavity. The interior of the positioning rod is connected to the movable rod through a spring sliding connection. The end of the movable rod is fixedly installed with a sensing head, which is pressed against the inner wall of the protective pad and forms a protrusion.

[0012] Preferably, a plurality of arc-shaped pieces are sequentially installed on the support plate along the direction of the machine body, the arc-shaped pieces are located on one side of the machine body, and the edge of the support plate and the outer side of the arc-shaped pieces form a limiting mechanism.

[0013] Preferably, partition plates are fixedly installed on both sides of the vertical plate, and the partition plates are located between the arc-shaped plate and the body. The partition plates are symmetrically distributed on both sides of the body, and the support plate, arc-shaped plate and vertical plate form a protective mechanism on the outside of the body.

[0014] Preferably, a top support rod is fixedly installed at the intersection of the support plate and the vertical plate, and the other end of the top support rod is fixedly connected to the edge of the partition plate. The top support rod is in an inclined state for reinforcing the support plate, the vertical plate and the partition plate.

[0015] Preferably, a reinforcement block is fixedly installed at the edge of the machine body, the reinforcement block is perpendicular to the support plate, and threaded rods are installed between the reinforcement block and the support plate and between the vertical plate and the motor.

[0016] Preferably, an induction alarm system is used, which includes the following process:

[0017] S1. When an external object hits the end of the motor, the impact force is first absorbed by the protective pad. The positioning rod inside the protective pad and the movable rod connected to the spring are activated, the sensor head is pressed, the spring is compressed, and the movable rod moves. This displacement information becomes the initial impact signal. At the same time, the impact force is transmitted to the connecting block through the positioning plate, causing the first and second arc rods to slide along the limit groove on the connecting block, driving the docking piece to move;

[0018] S2: The measuring piece moves with the docking piece. The movable rod on the edge of the vertical plate detects the displacement of the measuring piece. The detector located between the vertical plate and the docking piece senses the position change of the docking piece. The two convert the data into electrical signals.

[0019] S3. In the support mechanism, the protective mechanism composed of the support plate, curved plate, and vertical plate first disperses the impact force, and the partition plate further blocks and guides the impact force;

[0020] S4. All sensing signals are aggregated to the sensing terminal, which has a built-in alarm. The severity of the impact is determined based on the signal strength and frequency of change parameters. A light impact triggers a low-frequency, low-volume alarm; a moderate impact triggers a medium-frequency, medium-volume alarm; and a severe impact triggers a high-frequency, high-volume alarm.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, when an external object approaches or hits the end of the motor, it first contacts the protective pad, which plays a preliminary role in buffering the impact force. When the protective pad is subjected to force, according to the direction of the force, the connecting block drives the first arc rod and the second arc rod to slide on the connecting block along its arc trajectory. During its movement, it can reduce the impact force through friction, which plays a role in preventing the centrifugal pump from being hit. The staggered structure can greatly increase the displacement of the docking piece at the driving end, which can play a good protective role for the motor end. When a collision occurs, it buffers the impact force, reduces the damage to the motor and the entire centrifugal pump system, and extends the service life of the equipment. The arc design of the first arc rod and the second arc rod makes the device move more smoothly when sensing impact, reduces friction loss between components, improves overall stability and reliability, and reduces the risk of equipment failure or medical accidents caused by impact.

[0023] 2. In the present invention, when an external object hits the end of the motor, the impact force first acts on the protective pad, and the cavity inside the protective pad and the positioning rod fixedly installed on the inner wall begin to play a role. The raised portion formed on the inner wall of the protective pad by the sensing head will compress the spring under the impact force, and the contact surface between the raised portion and the impacting object is an arc surface, so the direction of the impact force transmission can be changed, and direct impact can be avoided. The spring-movable rod structure inside the protective pad and the limit groove, positioning bracket and other designs can effectively buffer the impact force, disperse the impact force, and reduce direct damage to the core components of the motor and centrifugal pump.

[0024] 3. In the present invention, the arc-shaped sheet is installed on the support plate and is located on one side of the machine body. The limiting mechanism formed by the arc-shaped sheet and the edge of the support plate can disperse the impact force to prevent the impact force from directly acting on the machine body. The partition plates on both sides of the vertical plate are located between the arc-shaped sheet and the machine body. The symmetrically distributed partition plates further block the impact and direct the impact force to the protective mechanism. The top support rod is tilted to connect the support plate, vertical plate and partition plate. Through the principle of triangular stable structure, the overall impact resistance and stability of the protective mechanism are enhanced to prevent components from being deformed due to impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of an anti-collision sensing device for an ECMO centrifugal pump according to the present invention;

[0026] Figure 2 This is a schematic diagram of the end planar structure of an ECMO centrifugal pump anti-collision sensing device of the present invention;

[0027] Figure 3 This is a front view of an anti-collision sensing device for an ECMO centrifugal pump according to the present invention;

[0028] Figure 4 This is a schematic diagram of the connection and structure of the support mechanism and anti-collision mechanism of an anti-collision sensing device for an ECMO centrifugal pump of the present invention;

[0029] Figure 5 This is a schematic diagram of the disassembled structure of the support mechanism and anti-collision mechanism of an anti-collision sensing device for an ECMO centrifugal pump of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the first curved rod and the second curved rod of the anti-collision sensing device of an ECMO centrifugal pump of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal planar structure of a protective pad of an ECMO centrifugal pump anti-collision sensing device of the present invention;

[0032] Figure 8 This is a schematic diagram of the vertical plate bottom structure of an ECMO centrifugal pump anti-collision sensing device of the present invention.

[0033] In the figure: 1. Machine body; 2. Pump body; 3. Sensing terminal; 4. Motor; 5. Reinforcement block; 6. Support mechanism; 7. Anti-collision mechanism; 61. Support plate; 62. Arc-shaped piece; 63. Vertical plate; 64. Top support rod; 65. Partition plate; 66. Positioning bracket; 67. Threaded rod; 71. Protection pad; 72. Raised portion; 73. Positioning plate; 74. Connecting block; 75. First arc-shaped rod; 76. Second arc-shaped rod; 77. Docking piece; 78. Arc-shaped convex strip; 79. Limiting groove; 710. Movable rod; 711. Positioning rod; 712. Detector; 713. Sensing head; 714. Measuring piece. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8The ECMO centrifugal pump anti-collision sensing device shown includes a body 1, a pump body 2, a sensing terminal 3 and a motor 4, the pump body 2 is fixedly installed at one end of the body 1, the motor 4 is fixedly installed at the other end of the body 1, the sensing terminal 3 is fixedly installed on one side of the body 1, the bottom of the body 1 is fixedly connected with a supporting mechanism 6, the end of the supporting mechanism 6 is fixedly installed with an anti-collision mechanism 7, the anti-collision mechanism 7 is located at the end of the motor 4, the anti-collision mechanism 7 includes a protective pad 71 arranged at the end of the motor 4, a positioning plate 73 fixedly installed on one side of the protective pad 71 and a detector 712 fixedly installed on the supporting mechanism 6, a connecting block 74 is fixedly installed at the center of the positioning plate 73, a first arc-shaped rod 75 and a second arc-shaped rod 76 are alternately and slidably connected on the outer wall of the connecting block 74, the first arc-shaped rod 75 and the second arc-shaped rod 76 are perpendicular to each other, a butt piece 77 is fixedly installed at the end of the first arc-shaped rod 75 and the end of the second arc-shaped rod 76, the first arc-shaped rod 75 and the second arc-shaped rod 76 are both arc-shaped, a measuring piece 714 is fixedly installed on one side of the butt piece 77, the curvature of the protective pad 71, the curvature of the first arc-shaped rod 75, the curvature of the second arc-shaped rod 76 and the curvature of the butt piece 77 are all the same, the measuring piece 714 is signal connected with a movable rod 710, the movable rod 710 detects the displacement of the measuring piece 714 when the measuring piece 714 moves, the supporting mechanism 6 includes a supporting plate 61 arranged on one side of the body 1, a vertical plate 63 perpendicular to the supporting plate 61 is fixedly connected at one end of the supporting plate 61, the movable rod 710 is fixedly installed at the four edges of the vertical plate 63, and the detector 712 is parallel to the butt piece 77, the detector 712 is located between the vertical plate 63 and the butt piece 77.

[0036] In this embodiment, the body 1, the pump body 2, the sensing terminal 3 and the motor 4 form a complete centrifugal pump. The support mechanism 6 and the anti-collision mechanism 7 are arranged on the periphery of the centrifugal pump, which respectively play the role of structural reinforcement and impact protection. When an external object approaches or hits the end of the motor 4, it first contacts the protection pad 71. The protection pad 71 plays a preliminary role in buffering the impact force. The impact force will be transmitted to the positioning plate 73, and then the connecting block 74 is subjected to force. Since the first arc rod 75 and the second arc rod 76 are staggered and slidably connected to the connecting block 74 and are perpendicular to each other, when the protection pad 71 is subjected to force, according to the direction of the force, the connecting block 74 drives the first arc rod 75 and the second arc rod 76 to rotate. The shaped rod 76 will slide on the connecting block 74 along its arc track. During its movement, it can reduce the impact force through friction, which plays a role in preventing the centrifugal pump from being hit. In addition, the staggered arrangement of the structure can greatly improve the overall structural strength. During the movement of the first arc rod 75 and the second arc rod 76, the docking piece 77 at the end is driven to move. The measuring piece 714 on one side of the docking piece 77 moves with the docking piece 77, and the measuring piece 714 is connected to the detector 712 signal. The detector 712 is fixedly installed at the four edges of the vertical plate 63, so that the detector 712 can detect the displacement of the measuring piece 714. At the same time, The detector 712 on the support mechanism 6 is located between the vertical plate 63 and the docking piece 77 and is parallel to the docking piece 77. The detector 712 can also sense the position change of the docking piece 77 and other related information. Through the coordinated work of these components, the collision situation is sensed and different alarm information is issued according to the specific situation. The support plate 61 and the vertical plate 63 included in the support mechanism 6 provide an installation and support basis for components such as the movable rod 710 and the detector 712. The pump body 2 is fixedly installed at one end of the body 1 to realize liquid pumping. The sensing terminal 3 is fixedly installed on one side of the body 1 to receive or process relevant sensing signals, etc. By setting the protective pad 71, the first Structures such as the first arc rod 75 and the second arc rod 76 can provide good protection for the end of the motor 4. When a collision occurs, they can buffer the impact force, reduce the damage to the motor 4 and the entire centrifugal pump system, and extend the service life of the equipment. On the other hand, by using the cooperation of components such as the measuring piece 714, the movable rod 710 and the detector 712, accurate sensing of the collision situation is achieved, and external collisions can be detected in time and relevant data information can be obtained, providing a basis for subsequent equipment protection, fault warning or processing, thereby enhancing the safety and reliability of the ECMO centrifugal pump during use and reducing the risk of equipment failure or medical accidents due to collisions.

[0037] Example 2: According to Figure 5 、 Figure 6 and Figure 7As shown, the inner side of the first arc rod 75 and the inner side of the second arc rod 76 are both provided with a limiting groove 79, the connecting block 74 is located on the inner side of the limiting groove 79, and the side of the docking piece 77 is fixedly installed with an arc convex strip 78, and a positioning bracket 66 is fixedly installed on one side of the vertical plate 63. The positioning bracket 66 is slidably connected to the arc convex strip 78, and the positioning bracket 66 is parallel to the docking piece 77. The docking piece 77 is located on one side of the detector 712, and the detector 712 is connected to the signal of the sensing terminal 3. A cavity is provided inside the protective pad 71, and a positioning rod 711 is fixedly installed on the inner wall of the cavity. The interior of the positioning rod 711 is slidably connected to the movable rod 710 through a spring, and the end of the movable rod 710 is fixedly installed with a sensing head 713, which presses on the inner wall of the protective pad 71 and forms a protrusion 72.

[0038] When the locking cam 73 is in the unlocked position, the locking cam 73 is in the unlocked position, and the spring 72 is in the unlocked position, so that the locking cam 73 is unlocked and the winch 73 is in the unlocked position. To ensure the stability and accuracy of the movement of the docking piece 77, during the movement of the docking piece 77, the detector 712 located on one side thereof can sense the position change, and the displacement of the movable rod 710 will also be detected. This information is transmitted to the sensing terminal 3 through the signal connection, realizing comprehensive sensing and data transmission of the impact situation. The spring-movable rod 710 structure inside the protective pad 71 and the limit groove 79, positioning bracket 66 and other designs can effectively buffer the impact force, disperse the impact force, reduce direct damage to the core components of the motor 4 and the centrifugal pump, and extend the service life of the equipment. Functionally, multiple components cooperate in sensing, the movable rod 710 and the detector 712 sense the changes caused by the impact from different angles, and transmit the data to the sensing terminal 3, realizing accurate monitoring of the impact situation, and providing a reliable basis for equipment protection and fault warning. In addition, through the sliding cooperation of the arc-shaped ridge 78 and the positioning bracket 66.

[0039] Example 3: According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 8As shown, a plurality of arc-shaped pieces 62 are installed in sequence on the support plate 61 along the direction of the machine body 1. The arc-shaped piece 62 is located on one side of the machine body 1. The edge of the support plate 61 and the outer side of the arc-shaped piece 62 form a limiting mechanism. Partition plates 65 are fixedly installed on both sides of the vertical plate 63, and the partition plates 65 are located between the arc-shaped piece 62 and the machine body 1. The partition plates 65 are symmetrically distributed on both sides of the machine body 1. The support plate 61, the arc-shaped piece 62 and the vertical plate 63 form a protective mechanism on the outer side of the machine body 1. A support rod 64 is fixedly installed at the intersection of the support plate 61 and the vertical plate 63. The other end of the support rod 64 is fixedly connected to the edge of the partition plate 65. The support rod 64 is in an inclined state for reinforcing the support plate 61, the vertical plate 63 and the partition plate 65. A reinforcement block 5 is fixedly installed at the edge of the machine body 1. The reinforcement block 5 is perpendicular to the support plate 61. Threaded rods 67 are installed between the reinforcement block 5 and the support plate 61 and between the vertical plate 63 and the motor 4.

[0040] In this embodiment, when the device is subjected to an external collision impact, the protective mechanism composed of the support plate 61, the arc-shaped piece 62, and the vertical plate 63 plays a primary protective role. The arc-shaped piece 62 is installed on the support plate 61 and is located on one side of the body 1. The limiting mechanism formed by the arc-shaped piece 62 and the edge of the support plate 61 can disperse the impact force and prevent the impact force from directly acting on the body 1. The partition plates 65 on both sides of the vertical plate 63 are located between the arc-shaped piece 62 and the body 1. The symmetrically distributed partition plates 65 further block the impact and direct the impact force to the protective mechanism. The top support rod 64 obliquely connects the support plate 61, the vertical plate 63 and the partition plates 65. Through the principle of triangular stable structure, the overall impact resistance and stability of the protective mechanism are enhanced to prevent components from being deformed due to impact. The reinforcement block 5 on the edge of the body 1 is perpendicular to the support plate 61. The threaded rod 67 installed between the support plate 61 and the vertical plate 63 and the motor 4 is threadedly connected to fasten the various components. When impacted, the relative displacement of the components is limited, so that the protective mechanism is closely combined with the body 1 and the motor 4 to cooperate to resist impact. The entire support and protection structure disperses and buffers the impact force, reducing damage to core components, while maintaining the stability of the device structure and ensuring the normal operation of the anti-collision sensing components. The protection mechanism and reinforcement structure composed of multiple components can effectively resist external collisions, reduce the risk of equipment damage, and extend the service life of the equipment. Components such as the support rod 64 and the threaded rod 67 enhance the structural strength of the device, avoid loosening or deformation of components, and ensure the reliability of the centrifugal pump operation; thirdly, the structural design is reasonable, and the various components cooperate with each other to form a stable support system. While providing protection, it does not affect the overall layout of the device and the normal operation of other functional components, thereby improving the safety of the ECMO centrifugal pump in complex use environments.

[0041] Example 4: A sensing alarm system, including the following process:

[0042] Step 1: When an external object hits the end of the motor 4, the impact force is first received by the protective pad 71. The positioning rod 711 inside the protective pad 71 and the movable rod 710 connected to the spring are activated, the induction head 713 is pressurized, the spring is compressed, and the movable rod 710 is displaced. This displacement information becomes a preliminary impact signal. At the same time, the impact force is transmitted to the connecting block 74 through the positioning plate 73, causing the first curved rod 75 and the second curved rod 76 to slide along the limiting groove 79 on the connecting block 74, driving the docking piece 77 to move;

[0043] Step 2: The measuring piece 714 moves with the docking piece 77. The movable rod 710 on the edge of the vertical plate 63 detects the displacement of the measuring piece 714. The detector 712 located between the vertical plate 63 and the docking piece 77 senses the position change of the docking piece 77. The two convert the data into electrical signals.

[0044] Step 3: In the support mechanism 6, the protection mechanism composed of the support plate 61, the arc-shaped plate 62, and the vertical plate 63 first disperses the impact force, and the partition plate 65 further blocks and guides the impact force;

[0045] Step 4. All sensing signals are aggregated to the sensing terminal 3. The sensing terminal 3 has a built-in alarm, which determines the degree of impact based on the signal strength and frequency of change parameters. A light impact triggers a low-frequency, low-volume alarm, a moderate impact triggers a medium-frequency, medium-volume alarm, and a severe impact triggers a high-frequency, high-volume alarm. The alarm information can also be remotely transmitted to the medical staff terminal device via the network for timely processing.

[0046] The device is used and operates as follows: First, assemble the machine body 1, pump body 2, sensing terminal 3, and motor 4 to form a complete centrifugal pump. The support mechanism 6 is fixed to the bottom of the machine body 1 via the reinforcement block 5 and threaded rod 67. The anti-collision mechanism 7 is installed at the end of the support mechanism 6 and located at the end of the motor 4. During use, if an external object approaches or strikes the end of the motor 4, the protective pad 71 first contacts and initially cushions the impact force. The impact force is then transmitted to the positioning plate 73 and the connecting block 74, causing the first and second curved rods 75, 76, which are interlaced and slidably connected to the connecting block 74, to slide along an arcuate trajectory, driving the docking piece 77 to move. The curved ridges 78 on the side of the docking piece 77 slide on the positioning bracket 66 to ensure stable movement. At the same time, the spring-connected movable rod 710 inside the protective pad 71 is compressed by the force, causing the sensing head 713 to move, and the measuring piece 714 to move with the docking piece 77. The movable rod 710 and the detector 712 respectively detect the displacement of the measuring piece 714 and the position change of the docking piece 77, and transmit the information to the sensing terminal 3. During this period, the protective mechanism composed of the support plate 61, the arc-shaped plate 62, the vertical plate 63, as well as the support rod 64, the partition plate 65 and other components work together to disperse the impact force, strengthen the overall structure, reduce damage to core components, and ensure the centrifugal pump continues to operate safely and stably. Once the sensing terminal 3 receives the impact information, it can issue different alarms according to the preset program to remind the user to take corresponding measures.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-collision sensing device for an ECMO centrifugal pump, comprising a body (1), a pump body (2), a sensing terminal (3) and a motor (4), wherein the pump body (2) is fixedly mounted on one end of the body (1), the motor (4) is fixedly mounted on the other end of the body (1), and the sensing terminal (3) is fixedly mounted on one side of the body (1), characterized in that: The bottom of the machine body (1) is fixedly connected to a support mechanism (6), an end of the support mechanism (6) is fixedly mounted with an anti-collision mechanism (7), and the anti-collision mechanism (7) is located at the end of the motor (4); The anti-collision mechanism (7) comprises a protection pad (71) arranged at the end of the motor (4), a positioning plate (73) fixedly mounted on one side of the protection pad (71), and a detector (712) fixedly mounted on the support mechanism (6); a connecting block (74) is fixedly mounted at the center of the positioning plate (73); a first arc rod (75) and a second arc rod (76) are connected to the outer wall of the connecting block (74) in an alternating sliding manner; the first arc rod (75) and the second arc rod (76) are perpendicular to each other; the end of the first arc rod (75) and the second arc rod (76) are connected to each other in an alternating sliding manner; The ends of the rods (76) are fixedly mounted with docking pieces (77); the first arc-shaped rod (75) and the second arc-shaped rod (76) are both arc-shaped; a measuring piece (714) is fixedly mounted on one side of the docking piece (77); the curvature of the protection pad (71), the curvature of the first arc-shaped rod (75), the curvature of the second arc-shaped rod (76) and the curvature of the docking piece (77) are all the same; the measuring piece (714) is signal-connected to a detector (712); when the measuring piece (714) moves, the detector (712) detects the displacement of the measuring piece (714); The support mechanism (6) comprises a support plate (61) arranged on one side of the machine body (1); one end of the support plate (61) is fixedly connected to a vertical plate (63) perpendicular to the support plate; the detector (712) is located at two edges of the vertical plate (63); the detector (712) is parallel to the docking piece (77); and the detector (712) is located between the vertical plate (63) and the docking piece (77).

2. The anti-collision sensing device for an ECMO centrifugal pump according to claim 1, characterized in that: The inner sides of the first arc-shaped rod (75) and the second arc-shaped rod (76) are both provided with limiting grooves (79), the connecting block (74) is located on the inner sides of the limiting grooves (79), and the side surfaces of the connecting piece (77) are fixedly provided with arc-shaped protruding strips (78).

3. The anti-collision sensing device for an ECMO centrifugal pump according to claim 2, characterized in that: A positioning bracket (66) is fixedly installed on one side of the vertical plate (63), and the positioning bracket (66) is slidably connected to the arc-shaped protrusion (78). The positioning bracket (66) is parallel to the docking piece (77), and the docking piece (77) is located on one side of the detector (712). The detector (712) is connected to the sensing terminal (3) for signal.

4. The anti-collision sensing device for an ECMO centrifugal pump according to claim 3, characterized in that: A cavity is provided inside the protection pad (71), and a positioning rod (711) is fixedly installed on the inner wall of the cavity. A movable rod (710) is slidably connected to the interior of the positioning rod (711) via a spring. A sensing head (713) is fixedly installed at the end of the movable rod (710). The sensing head (713) is pressed against the inner wall of the protection pad (71) to form a protrusion (72).

5. The anti-collision sensing device for an ECMO centrifugal pump according to claim 4, characterized in that: A plurality of arc-shaped pieces (62) are sequentially mounted on the support plate (61) along the direction of the machine body (1); the arc-shaped pieces (62) are located on one side of the machine body (1); and the edge of the support plate (61) and the outer side of the arc-shaped pieces (62) form a limiting mechanism.

6. The anti-collision sensing device for an ECMO centrifugal pump according to claim 1, characterized in that: Separation plates (65) are fixedly mounted on both sides of the vertical plate (63), and the separation plates (65) are located between the arc-shaped plate (62) and the machine body (1). The separation plates (65) are symmetrically distributed on both sides of the machine body (1). The support plate (61), the arc-shaped plate (62) and the vertical plate (63) form a protective mechanism on the outside of the machine body (1).

7. The anti-collision sensing device for an ECMO centrifugal pump according to claim 1, characterized in that: A supporting rod (64) is fixedly installed at the intersection of the support plate (61) and the vertical plate (63), and the other end of the supporting rod (64) is fixedly connected to the edge of the partition plate (65). The supporting rod (64) is in an inclined state and is used to reinforce the support plate (61), the vertical plate (63) and the partition plate (65).

8. The anti-collision sensing device for an ECMO centrifugal pump according to claim 3, characterized in that: A reinforcement block (5) is fixedly installed at the edge of the machine body (1), and the reinforcement block (5) is perpendicular to the support plate (61). Threaded rods (67) are installed between the reinforcement block (5) and the support plate (61) and between the vertical plate (63) and the motor (4).

9. The anti-collision sensing device for an ECMO centrifugal pump according to claim 8, characterized in that: A sensor alarm system was used which included the following process: S1. When an external object hits the end of the motor (4), the impact force is first received by the protective pad (71), the positioning rod (711) inside the protective pad (71) and the movable rod (710) connected to the spring are activated, the induction head (713) is pressed, the spring is compressed, and the movable rod (710) is displaced. This displacement information becomes a preliminary impact signal. At the same time, the impact force is transmitted to the connecting block (74) through the positioning plate (73), causing the first arc rod (75) and the second arc rod (76) to slide along the limiting groove (79) on the connecting block (74), driving the docking piece (77) to move; S2, the measuring piece (714) moves with the docking piece (77), the movable rod (710) on the edge of the vertical plate (63) detects the displacement of the measuring piece (714), and the detector (712) located between the vertical plate (63) and the docking piece (77) senses the position change of the docking piece (77), and the two convert the data into an electrical signal; S3, in the support mechanism (6), the protection mechanism composed of the support plate (61), the arc-shaped plate (62), and the vertical plate (63) first disperses the impact force, and the partition plate (65) further blocks and guides the impact force; S4. All sensing signals are collected to the sensing terminal (3). The sensing terminal (3) has a built-in alarm, which determines the degree of impact based on the signal strength and frequency of change parameters. A light impact triggers a low-frequency, low-volume alarm, a moderate impact triggers a medium-frequency, medium-volume alarm, and a heavy impact triggers a high-frequency, high-volume alarm.

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