Intubation propelling device for cardiac surgery

Abstract

The invention discloses an intubation propelling device for cardiac surgery, and relates to the technical field of intubation propelling equipment.The intubation propelling device comprises a main body mechanism, the main body mechanism comprises a shell, the inner wall of the shell is rotationally connected with a rotating wheel, a handle is fixedly installed on the surface of the rotating wheel, and a guide plate is attached to the top of the shell; the inner wall of the guide plate is fixedly connected with the surface of the shell through bolts, a grip is fixedly mounted on the surface of the shell, a detection mechanism is arranged on the surface of the shell, and the detection mechanism comprises an air tightness detection unit; according to the intubation propelling device for the cardiac surgery, the air tightness detection unit is arranged, whether the air tightness of the intubation is qualified or not can be rapidly and accurately judged according to the change generated by the pressure difference, and therefore the operation preparation efficiency is improved, and the risk, caused by leakage of the intubation, of a patient in the operation is reduced; and the safety and the reliability of intubation in the operation process are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of cannula propulsion equipment, in particular to a cannula propulsion device used in cardiac surgery. Background Art

[0002] The cannula advancement device for cardiac surgery is a specially designed medical device used to advance the cannula stably and accurately during cardiovascular surgery, assisting doctors in inserting the cannula into the patient's body. It can effectively maintain the stability of the cannula during the advancement process and improve the accuracy and safety of the operation.

[0003] The cannula pushing device for cardiac surgery usually consists of a handle, a wheel and a guide plate. The doctor holds the handle and pushes the cannula by rotating the wheel, which is guided by the guide plate and the contact between the wheel and the baffle with the surface of the cannula, thereby assisting the intubation operation. Although the cannula is quality inspected during the production process, it is inevitable that a few cannulas will break and not be inspected. As a result, when the cannula leaks during the pushing process, the leakage may cause external pathogens to enter the patient's body, especially when the patient's resistance is weak, which can easily cause postoperative nosocomial infection. It is difficult to conduct secondary inspections on the cannula used, which increases the risk of the operation and reduces the safety of the operation.

[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing cannula propulsion devices for cardiac surgery on the market. Even if they can be solved, they need to be solved with the cooperation of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose a cannula propulsion device for cardiac surgery. Summary of the Invention

[0005] The object of the present invention is to provide a cannula propulsion device for cardiac surgery to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a cannula propulsion device for cardiac surgery, comprising a main body mechanism, the main body mechanism including a housing, a rotating wheel rotatably connected to the inner wall of the housing, a handle fixedly mounted on the surface of the rotating wheel, a guide plate affixed to the top of the housing, the inner wall of the guide plate fixedly connected to the surface of the housing via bolts, a handle fixedly mounted on the surface of the housing, and a detection mechanism provided on the surface of the housing; The detection mechanism includes an airtightness detection unit, which is arranged on the surface of the housing and is used to perform airtightness detection on the advancing cannula; The detection mechanism further includes a guide unit, which is arranged on the inner wall of the airtightness detection unit and is used to guide the movement during the intubation detection; A limiting mechanism is provided on the surface of the shell, and the limiting mechanism is used to limit the rotation of the rotating wheel. The airtightness detection unit is used in conjunction with the limiting mechanism.

[0007] Preferably, the airtightness detection unit includes a sealing box, which is fixedly installed on one side of the shell, and connection holes are opened on both sides of the sealing box. The top of the sealing box is fixedly connected to a connecting pipe, and the inner cavity of the connecting pipe is slidably connected to a piston. A micro air pump is fixedly installed on the top of the sealing box, and the output end of the micro air pump is fixedly connected to an air inlet pipe, one end of the air inlet pipe is fixedly connected to the top of the sealing box, and a battery is fixedly installed on one side of the shell, and the output end of the battery is electrically connected to the input end of the micro air pump.

[0008] Preferably, a limiting ring is fixedly installed on the inner wall of the connecting pipe, and the top of the limiting ring is used in conjunction with the bottom of the sealing gasket.

[0009] Preferably, a mounting groove is provided on the inner wall of the connecting hole, and an elastic lip is provided in the inner cavity of the mounting groove, and the surface of the elastic lip is in close contact with the inner wall of the mounting groove.

[0010] Preferably, a protection box is provided on the surface of the shell, the battery is fixedly installed in the inner cavity of the protection box, and the protection box and the shell are fixedly connected by bolts.

[0011] Preferably, the guide unit includes a movable groove, which is provided on the inner wall of the sealing box, and the inner cavity of the movable groove is slidably connected to a fixed ring, the number of the fixed rings is two, and a metal sheet is fixedly installed on one side of the fixed ring, and a connecting groove is provided on the surface of the sealing box, and the inner cavity of the connecting groove is slidably connected to a fixed frame, and an electromagnet is fixedly installed on the bottom of the fixed frame, and the input end of the electromagnet is electrically connected to the input end of the battery, and a friction pad is fixedly installed on the inner side of the fixed ring, and the inner wall of the movable groove is rotatably connected to a fixed rod, and a movable groove is provided on the surface of the fixed rod, and the inner cavity of the movable groove is provided with a coil spring, one end of the coil spring is movably connected to the inner cavity of the movable groove, and the other end of the coil spring is fixedly connected to the surface of the fixed ring.

[0012] Preferably, a guide groove is provided on the inner wall of the movable groove, a coil spring is provided on the surface of the metal sheet, one end of the coil spring is fixedly mounted on the surface of the metal sheet, and a guide plate is fixedly mounted on the other end of the coil spring, and the surface of the guide plate is slidably connected to the inner cavity of the guide groove.

[0013] Preferably, the limiting mechanism includes a micro electric push rod, which is fixedly mounted on the surface of the shell, the telescopic end of the micro electric push rod is fixedly mounted with a limiting tooth plate, the surface of the rotating wheel is fixedly mounted with a gear, the gear cooperates with the teeth of the limiting tooth plate, the top of the sealing box is fixedly mounted with a support frame, the bottom of the support frame is fixedly mounted with a touch switch, the top of the piston is fixedly mounted with a touch rod, one end of the touch rod contacts the bottom of the touch switch, the inner wall of the connecting tube is fixedly mounted with a connecting ring, the inner cavity of the connecting ring is slidably connected to the surface of the touch rod, the surface of the touch rod is sleeved with a weak spring, one end of the weak spring is fixedly connected to the bottom of the connecting ring, and the other end of the weak spring is fixedly connected to the top of the piston, the output end of the touch switch is electrically connected to the input end of the micro electric push rod, and the input end of the micro electric push rod is electrically connected to the output end of the battery.

[0014] Preferably, a sliding groove is provided on the surface of the housing, a sliding block is fixedly mounted on the surface of the limiting tooth plate, and the surface of the sliding block is slidably connected to the inner cavity of the sliding groove.

[0015] Preferably, a flashing light is fixedly mounted on the surface of the housing, an input end of the flashing light is electrically connected to an output end of the battery, and an output end of the touch switch is electrically connected to an input end of the flashing light.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an airtightness detection unit and utilizes the changes caused by the pressure difference to quickly and accurately determine whether the intubation is airtight, thereby improving the efficiency of surgical preparation, reducing the risk of increased patient surgery due to intubation leakage, and ensuring the safety and reliability of the intubation during the operation.

[0017] 2. The present invention provides a guide unit, and through the coordinated action of the electromagnet and the coil spring, it realizes the rapid clamping and guiding of the cannula, improves the convenience and stability of operation, reduces the difficulty of the cannula entering the connecting hole, and improves work efficiency.

[0018] 3. By setting up a limiting mechanism, the present invention enables doctors to intuitively understand the test results, thereby making timely judgments and countermeasures. At the same time, the qualified rate of intubation can be intuitively judged, which reduces the judgment time, thereby reducing the doctor's thinking time for making judgments and countermeasures, further reducing the risk of patients during surgery and further improving the safety of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural diagram of the gear and the protective box of the present invention; Figure 3 is a cross-sectional view of the sealing box of the present invention; Figure 4 is a cross-sectional view of the connecting pipe of the present invention; Figure 5 It is a schematic structural diagram of the fixing ring and coil spring of the present invention; Figure 6 This is a schematic structural diagram of the limiting tooth plate and the gear of the present invention; Figure 7 This is a schematic structural diagram of the micro electric push rod, the limiting tooth plate and the sliding block of the present invention; Figure 8 This is an exploded view of the coil spring and the fixing rod of the present invention; Figure 9 This is an exploded view of the protective box, housing, and battery of the present invention.

[0020] In the figure: 1. Main body; 11. Housing; 12. Rotating wheel; 13. Guide plate; 14. Handle; 15. Grip; 2. Detection mechanism; 21. Airtightness detection unit; 2101. Sealing box; 2102. Connecting hole; 2103. Connecting pipe; 2104. Piston; 2105. Micro air pump; 2106. Inlet pipe; 2107. Battery; 2108. Limiting ring; 2109. Mounting groove; 2110. Elastic lip; 2111. Protective box; 22. Guide unit; 2201. Fixing ring; 2202. Metal sheet; 2203. Guide 2204, guide plate; 2205, movable slot; 2206, connecting slot; 2207, fixed frame; 2208, electromagnet; 2209, coil spring; 2210, friction pad; 2211, movable slot; 2212, coil spring; 2213, fixed rod; 3, limiting mechanism; 301, electric push rod; 302, limit tooth plate; 303, gear; 304, support frame; 305, touch switch; 306, connecting ring; 307, weak spring; 308, touch rod; 309, sliding slot; 310, sliding block; 311, flashing light. DETAILED DESCRIPTION

[0021] 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 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 making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9 The present invention provides a technical solution: a cannula propulsion device for cardiac surgery, comprising a main body mechanism 1, the main body mechanism 1 comprising a shell 11, the inner wall of the shell 11 is rotatably connected to a rotating wheel 12, the surface of the rotating wheel 12 is fixedly mounted with a handle 14, the top of the shell 11 is affixed with a guide plate 13, the inner wall of the guide plate 13 is fixedly connected to the surface of the shell 11 by bolts, the surface of the shell 11 is fixedly mounted with a handle 15, and the surface of the shell 11 is provided with a detection mechanism 2; The detection mechanism 2 includes an airtightness detection unit 21 . The airtightness detection unit 21 is disposed on the surface of the housing 11 . The airtightness detection unit 21 is used to perform airtightness detection on the advancing cannula.

[0023] As a further limitation of the detection mechanism 2 of the present invention, the airtightness detection unit 21 includes a sealing box 2101, which is fixedly installed on one side of the housing 11. Connection holes 2102 are provided on both sides of the sealing box 2101. The top of the sealing box 2101 is fixedly connected to a connecting pipe 2103, and the inner cavity of the connecting pipe 2103 is slidably connected to a piston 2104. A micro air pump 2105 is fixedly installed on the top of the sealing box 2101, and the output end of the micro air pump 2105 is fixedly connected to an air inlet pipe 2106. One end of the air inlet pipe 2106 is fixedly connected to the top of the sealing box 2101. A battery 2107 is fixedly installed on one side of the housing 11. The output end of the battery 2107 is electrically connected to the input end of the micro air pump 2105. By providing an airtightness detection unit 21, the pressure difference can be used to quickly and accurately determine whether the airtightness of the intubation tube is qualified, thereby improving the efficiency of surgical preparation, reducing the risk to the patient during surgery due to intubation leakage, and ensuring the safety and reliability of the intubation during surgery. A limit ring 2108 is fixedly installed on the inner wall of the connecting pipe 2103. The top of the limit ring 2108 cooperates with the bottom of the sealing gasket. By setting the limit ring 2108, when the bottom of the piston 2104 contacts the top of the limit block, the downward movement distance of the piston 2104 can be limited, thereby avoiding separation between the piston 2104 and the connecting pipe 2103. An installation groove 2109 is provided on the inner wall of the connecting hole 2102, and an elastic lip 2110 is provided in the inner cavity of the installation groove 2109. The surface of the elastic lip 2110 is in close contact with the inner wall of the installation groove 2109. By providing the elastic lip 2110, the installation of the elastic lip 2110 can be achieved through the installation groove 2109. At the same time, through the close contact between the two and the contact between the inner side of the elastic lip 2110 and the surface of the cannula, the sealing performance of the closed space formed by the sealing box 2101 and the surface of the cannula is further increased.

[0024] The surface of the shell 11 is provided with a protective box 2111, the storage battery 2107 is fixedly installed in the inner cavity of the protective box 2111, the protective box 2111 is fixedly connected with the shell 11 through bolts, by setting the protective box 2111, the storage battery 2107 can be protected, a closed space is formed through the protective box 2111 and the shell 11, the contact between the storage battery 2107 and the external environment is avoided, thereby the protection of the storage battery 2107 is realized.

[0025] The specific implementation of the embodiment is that when the patient needs to be intubated in the heart surgery, the doctor holds the handle 15, one end of the intubation tube enters the connecting hole 2102 reserved in the sealed box 2101, and then enters the cavity formed by the guide plate 13 and the shell 11 through the connecting hole 2102 on the other side, and contacts the inner side of the rotating wheel 12, the handle 14 is rotated, the rotating wheel 12 can be driven to rotate in the inner cavity of the shell 11, the intubation tube is pushed and moved through the friction between the guide plate 13, the inner wall of the rotating wheel 12 and the intubation tube, the intubation tube is pushed, the doctor inserts the intubation tube into the patient's body, the safety of the operation is increased, before the intubation tube is pushed, the switch of the storage battery 2107 is turned on, the micro air pump 2105 is powered by the storage battery 2107, the micro air pump 2105 starts to work, the gas is transported to the inside of the sealed box 2101 through the air inlet pipe 2106, the closed space formed by the sealed box 2101 is contacted through the contact between the intubation tube and the connecting hole 2102, the micro air pump 2105 continuously works, thereby the pressure in the sealed box 2101 gradually increases, the gas pressure in the sealed box 2101 pushes the piston 2104 to move upward in the inner cavity of the connecting pipe 2103, when the micro air pump 2105 stops working, the piston 2104 stops moving because the pressure no longer changes, when the intubation tube is damaged, the pressure in the sealed box 2101 contacts the external environment, thereby the gas pressure in the sealed box 2101 decreases, when the gas pressure decreases, the piston 2104 moves downward, through the movement of the piston 2104, whether the intubation tube is qualified can be judged, through the continuous pushing of the rotating wheel 12, the surface of the intubation tube contacts the inner wall of the connecting hole 2102 in the movement process of the intubation tube, thereby the continuous detection of the intubation tube is realized, thereby the safety of the intubation tube in use is increased.

[0026] Embodiment 2: please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5The present invention provides a technical solution: a cannula propulsion device for cardiac surgery. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. The detection mechanism 2 also includes a guide unit 22, which is arranged on the inner wall of the airtightness detection unit 21. The guide unit 22 is used to guide the movement during the cannula detection.

[0027] As a further limitation of the detection mechanism 2 of the present invention, the guide unit 22 includes a movable groove 2205, the movable groove 2205 is opened on the inner wall of the sealing box 2101, the inner cavity of the movable groove 2205 is slidably connected to the fixed ring 2201, the number of the fixed ring 2201 is two, a metal sheet 2202 is fixedly installed on one side of the fixed ring 2201, a connecting groove 2206 is opened on the surface of the sealing box 2101, the inner cavity of the connecting groove 2206 is slidably connected to the fixed frame 2207, the bottom of the fixed frame 2207 is fixedly installed with an electromagnet 2208, the input end of the electromagnet 2208 is electrically connected to the input end of the battery 2107, and the fixed ring 2201 is fixedly installed with a fixed frame 2207. A friction pad 2210 is fixedly installed on the inner side, and a fixed rod 2213 is rotatably connected to the inner wall of the movable groove 2205. A movable groove 2211 is provided on the surface of the fixed rod 2213, and the inner cavity of the movable groove 2211 is provided with a coil spring 2209. One end of the coil spring 2209 is movably connected to the inner cavity of the movable groove 2211, and the other end of the coil spring 2209 is fixedly connected to the surface of the fixed ring 2201. By setting up the guide unit 22, through the coordinated action of the electromagnet 2208 and the coil spring 2209, the rapid clamping and guiding of the cannula is achieved, which improves the convenience and stability of the operation, reduces the difficulty of the cannula entering the connecting hole 2102, and improves the work efficiency.

[0028] The inner wall of the movable groove 2205 is provided with a guide groove 2203, and a coil spring 2212 is provided on the surface of the metal sheet 2202. One end of the coil spring 2212 is fixedly installed on the surface of the metal sheet 2202, and the other end of the coil spring 2212 is fixedly installed with a guide piece 2204. The surface of the guide piece 2204 is slidably connected with the inner cavity of the guide groove 2203. Through the sliding connection between the guide groove 2203 and the guide piece 2204, the movement of the fixed ring 2201 can be guided. The guide piece 2204 is made of PVC material, so that the fixed ring 2201 can maintain horizontal movement to prevent the fixed ring 2201 from deflecting. When the metal sheet 2202 approaches the electromagnet 2208, the coil spring 2212 can be squeezed to be in a compressed state. When the electromagnet 2208 cancels the attraction to the metal sheet 2202, the reaction force of the coil spring 2212 prevents the guide piece 2204 from moving out of the inner cavity of the guide groove.

[0029] The specific implementation of this embodiment is as follows: after the cannula enters the inner cavity of the sealing box 2101 from the connecting hole 2102, the front end of the cannula enters the inner cavity of the fixing ring 2201 and moves a small section out of the fixing ring 2201, so that the friction pad 2210 contacts the surface of the cannula, and the electromagnet 2208 is powered by the battery 2107, so that the electromagnet 2208 generates magnetic force. The metal sheet 2202 is made of iron, and the fixing ring 2201 is made of PVC material. The metal sheet 2202 is attracted, so that the fixing ring 2201 moves slightly toward the direction of the electromagnet 2208. At the same time, the movable groove 2211 can make the coil spring 2209 slide on the surface of the fixing rod 2213, while preventing the fixing rod from sliding. 2213 is separated from the coil spring 2209, thereby clamping the cannula and making the fixing frame 2207 slide in the inner cavity of the connecting groove 2206, which can drive the electromagnet 2208 to start moving, thereby making the fixing ring 2201 move in the inner cavity of the movable groove 2205, and at the same time the coil spring 2209 is stretched. When the fixing ring 2201 moves to the inner wall on the other side of the movable groove 2205, the power supply to the electromagnet 2208 is canceled, so that the electromagnet 2208 loses its magnetic force, cancels the attraction to the metal sheet 2202, and cancels the clamping and fixation of the cannula, so that the cannula can move out of the inner cavity of the sealing box 2101, completes the guidance of the cannula, and reduces the difficulty of the cannula entering the two connecting holes 2102 at the same time.

[0030] Example 3: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The present invention provides a technical solution: a cannula propulsion device for cardiac surgery. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. A limiting mechanism 3 is provided on the surface of the shell 11. The limiting mechanism 3 is used to limit the rotation of the wheel 12. The airtightness detection unit 21 is used in conjunction with the limiting mechanism 3.

[0031] As a further limitation of the limiting mechanism 3 of the present invention, the limiting mechanism 3 includes a micro electric push rod 301, the micro electric push rod 301 is fixedly mounted on the surface of the shell 11, the telescopic end of the micro electric push rod 301 is fixedly mounted with a limit tooth plate 302, the surface of the rotating wheel 12 is fixedly mounted with a gear 303, the gear 303 cooperates with the teeth of the limit tooth plate 302, the top of the sealing box 2101 is fixedly mounted with a support frame 304, the bottom of the support frame 304 is fixedly mounted with a touch switch 305, the top of the piston 2104 is fixedly mounted with a touch rod 308, one end of the touch rod 308 is in contact with the bottom of the touch switch 305, the inner wall of the connecting tube 2103 is fixedly mounted with a connecting ring 306, the inner cavity of the connecting ring 306 is in contact with the touch rod 3 08 is slidably connected to the surface of the touch rod 308, and a weak spring 307 is provided on the surface of the touch rod 308. One end of the weak spring 307 is fixedly connected to the bottom of the connecting ring 306, and the other end of the weak spring 307 is fixedly connected to the top of the piston 2104. The touch switch 305 is electrically connected to the input end of the micro electric push rod 301, and the input end of the micro electric push rod 301 is electrically connected to the output end of the battery 2107. By setting the limiting mechanism 3, the doctor can intuitively understand the test results, so as to make judgments and countermeasures in time, and at the same time can make intuitive judgments on the qualified rate of the intubation, which reduces the judgment time, thereby reducing the thinking time for the doctor to make judgments and countermeasures, further reducing the risk of the patient during surgery, and further improving the safety of the surgery.

[0032] A sliding groove 309 is formed on the surface of the housing 11. A sliding block 310 is fixedly mounted on the surface of the position-limiting toothed plate 302. The surface of the sliding block 310 is slidably connected to the inner cavity of the sliding groove 309. The sliding connection between the sliding groove 309 and the sliding block 310 can guide the movement of the position-limiting toothed plate 302, so that the position-limiting toothed plate 302 can move horizontally. A flashing light 311 is fixedly installed on the surface of the shell 11. The input end of the flashing light 311 is electrically connected to the output end of the battery 2107, and the output end of the touch switch 305 is electrically connected to the input end of the flashing light 311. Through the flashing light 311, when the touch switch 305 is not in contact with the touch rod 308, the flashing light 311 is turned on. When the flashing light 311 is on, it indicates that the intubation is unqualified, which further enables the doctor to intuitively understand the test results.

[0033] The specific implementation of this embodiment is as follows: the touch switch 305 is supported by the support frame 304. When the micro air pump 2105 starts to pressurize the sealing box 2101, the piston 2104 moves upward in the inner cavity of the connecting tube 2103, which drives the touch rod 308 to move upward. When the touch rod 308 contacts the touch switch 305, the circuit between the micro air pump 2105 and the battery 2107 can be disconnected, thereby stopping the micro air pump 2105. At the same time, the upward movement of the piston 2104 compresses the weak spring 307, which is connected to the connecting ring 301. 6, so that the weak spring 307 is in a compressed state. When the cannula leaks, the piston 2104 moves downward, and the reaction force of the weak spring 307 causes the touch rod 308 to move downward, so that the touch rod 308 cancels the contact with the touch switch 305. When it is not in contact with the touch switch 305, the micro electric push rod 301 is controlled to push the limit tooth plate 302 to move, so that the teeth of the limit tooth plate 302 are engaged with the teeth of the gear 303, thereby limiting the continuous pushing of the cannula, so that the doctor can intuitively judge the result of the cannula air tightness test.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cannula propulsion device for cardiac surgery, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a shell (11), the inner wall of the shell (11) is rotatably connected to a rotating wheel (12), a handle (14) is fixedly mounted on the surface of the rotating wheel (12), a guide plate (13) is attached to the top of the shell (11), the inner wall of the guide plate (13) is fixedly connected to the surface of the shell (11) by bolts, a handle (15) is fixedly mounted on the surface of the shell (11), and a detection mechanism (2) is provided on the surface of the shell (11); The detection mechanism (2) comprises an airtightness detection unit (21), the airtightness detection unit (21) being arranged on the surface of the housing (11), and the airtightness detection unit (21) being used to perform airtightness detection on the advancing cannula; The detection mechanism (2) further includes a guide unit (22), wherein the guide unit (22) is arranged on the inner wall of the airtightness detection unit (21), and the guide unit (22) is used to guide the movement during the intubation detection; A limiting mechanism (3) is provided on the surface of the housing (11), and the limiting mechanism (3) is used to limit the rotation of the rotating wheel (12). The airtightness detection unit (21) is used in conjunction with the limiting mechanism (3).

2. The cannula propulsion device for cardiac surgery according to claim 1, characterized in that: The airtightness detection unit (21) comprises a sealing box (2101), which is fixedly mounted on one side of the housing (11), and connection holes (2102) are provided on both sides of the sealing box (2101). The top of the sealing box (2101) is fixedly connected to a connecting pipe (2103), and the inner cavity of the connecting pipe (2103) is slidably connected to a piston (2104). A micro air pump (2105) is fixedly mounted on the top of the sealing box (2101), and the output end of the micro air pump (2105) is fixedly connected to an air inlet pipe (2106), and one end of the air inlet pipe (2106) is fixedly connected to the top of the sealing box (2101). A battery (2107) is fixedly mounted on one side of the housing (11), and the output end of the battery (2107) is electrically connected to the input end of the micro air pump (2105).

3. The cannula propulsion device for cardiac surgery according to claim 2, characterized in that: A limiting ring (2108) is fixedly mounted on the inner wall of the connecting pipe (2103), and the top of the limiting ring (2108) cooperates with the bottom of the sealing gasket.

4. The cannula propulsion device for cardiac surgery according to claim 2, characterized in that: The inner wall of the connecting hole (2102) is provided with a mounting groove (2109), and the inner cavity of the mounting groove (2109) is provided with an elastic lip (2110), and the surface of the elastic lip (2110) is in close contact with the inner wall of the mounting groove (2109).

5. The cannula propulsion device for cardiac surgery according to claim 2, characterized in that: A protective box (2111) is provided on the surface of the housing (11), the battery (2107) is fixedly mounted in the inner cavity of the protective box (2111), and the protective box (2111) and the housing (11) are fixedly connected via bolts.

6. The cannula propulsion device for cardiac surgery according to claim 2, characterized in that: The guide unit (22) includes a movable groove (2205), the movable groove (2205) is provided on the inner wall of the sealing box (2101), the inner cavity of the movable groove (2205) is slidably connected to a fixed ring (2201), the number of the fixed rings (2201) is two, a metal sheet (2202) is fixedly installed on one side of the fixed ring (2201), a connecting groove (2206) is provided on the surface of the sealing box (2101), the inner cavity of the connecting groove (2206) is slidably connected to a fixed frame (2207), and the bottom of the fixed frame (2207) is fixedly installed with an electromagnet (2208) ), the input end of the electromagnet (2208) is electrically connected to the input end of the battery (2107), a friction pad (2210) is fixedly installed on the inner side of the fixed ring (2201), the inner wall of the movable groove (2205) is rotatably connected to a fixed rod (2213), a movable groove (2211) is provided on the surface of the fixed rod (2213), and a coil spring (2209) is provided in the inner cavity of the movable groove (2211), one end of the coil spring (2209) is movably connected to the inner cavity of the movable groove (2211), and the other end of the coil spring (2209) is fixedly connected to the surface of the fixed ring (2201).

7. The cannula propulsion device for cardiac surgery according to claim 6, characterized in that: A guide groove (2203) is provided on the inner wall of the movable groove (2205), a coil spring (2212) is provided on the surface of the metal sheet (2202), one end of the coil spring (2212) is fixedly mounted on the surface of the metal sheet (2202), and a guide plate (2204) is fixedly mounted on the other end of the coil spring (2212), and the surface of the guide plate (2204) is slidably connected to the inner cavity of the guide groove (2203).

8. The cannula propulsion device for cardiac surgery according to claim 6, characterized in that: The limiting mechanism (3) comprises a micro electric push rod (301), the micro electric push rod (301) is fixedly mounted on the surface of the housing (11), a limit tooth plate (302) is fixedly mounted on the telescopic end of the micro electric push rod (301), a gear (303) is fixedly mounted on the surface of the rotating wheel (12), the gear (303) cooperates with the teeth of the limit tooth plate (302), a support frame (304) is fixedly mounted on the top of the sealing box (2101), a touch switch (305) is fixedly mounted on the bottom of the support frame (304), a touch rod (308) is fixedly mounted on the top of the piston (2104), and one end of the touch rod (308) is connected to the piston (2104). The bottom of the touch switch (305) is in contact with the bottom of the connecting tube (2103), and a connecting ring (306) is fixedly installed on the inner wall of the connecting tube (2103). The inner cavity of the connecting ring (306) is slidably connected to the surface of the touch rod (308). The surface of the touch rod (308) is sleeved with a weak spring (307), one end of the weak spring (307) is fixedly connected to the bottom of the connecting ring (306), and the other end of the weak spring (307) is fixedly connected to the top of the piston (2104). The touch switch (305) is electrically connected to the input end of the micro electric push rod (301), and the input end of the micro electric push rod (301) is electrically connected to the output end of the battery (2107).

9. The cannula propulsion device for cardiac surgery according to claim 8, characterized in that: A sliding groove (309) is provided on the surface of the housing (11), a sliding block (310) is fixedly mounted on the surface of the limiting tooth plate (302), and the surface of the sliding block (310) is slidably connected to the inner cavity of the sliding groove (309).

10. The cannula propulsion device for cardiac surgery according to claim 8, characterized in that: A flashing light (311) is fixedly mounted on the surface of the housing (11), the input end of the flashing light (311) is electrically connected to the output end of the battery (2107), and the output end of the touch switch (305) is electrically connected to the input end of the flashing light (311).

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