Stent placing device in cardiac surgery

Abstract

The invention discloses a stent placement device in cardiac surgery, which belongs to the technical field of medical instruments and comprises a C-shaped frame. A straight plate is mounted at the inner bottom of the C-shaped frame; the side wall of the straight plate is connected with a stent catheter driving assembly for driving a stent catheter; the support guide pipe driving assembly comprises a driving assembly, a rolling supporting assembly and a rolling crimping assembly, the driving assembly is connected with the side wall of the straight plate, the rolling supporting assembly is connected with the driving end of the driving assembly, the rolling supporting assembly is fixedly connected with the straight plate, the rolling crimping assembly is located over the rolling supporting assembly, and the rolling crimping assembly is connected with the top of the C-shaped frame; the bottom of the rolling supporting assembly is connected with a guide wire crimping assembly used for conducting wire crimping. The side wall of the straight plate is connected with a moving distance detection assembly used for monitoring the driving distance of the rolling supporting assembly. By means of the mode, automatic stent catheter movement is achieved, the working pressure of medical workers is relieved, and actual use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for placing a stent during extracardiac surgery. Background Art

[0002] In recent years, vascular interventional surgery has developed rapidly due to its advantages of less trauma, quick recovery and safety, and has become the main treatment for cardiovascular diseases. Vascular interventional surgery is a procedure in which doctors use real-time dynamic medical images to manually deliver vascular devices such as catheters, guidewires and balloons to designated locations in the human body, and diagnose and accurately treat lesions.

[0003] Chinese patent CN209695474U discloses a cardiovascular stent catheter delivery device, including a base plate, a guide assembly, a transmission assembly and a limit assembly; a slide groove is arranged on the base plate, and the guide assembly, the transmission assembly and the limit assembly are arranged in the slide groove on the base plate in sequence; the transmission assembly is arranged between a pair of guide assemblies, which include a driving motor, a pair of guide wheel assemblies, a support shaft and a transmission frame, a guide wheel assembly is arranged on the output shaft of the driving motor and fixed on the transmission frame, and a guide wheel assembly is arranged on the support shaft and fixed on the transmission frame; the guide assembly includes a pair of guide wheel assemblies, a support shaft and a guide frame, and the guide wheel assembly is arranged on the support shaft and fixed on the guide frame; the limit assembly is arranged at one end of the base plate. The technical solution provided by the utility model has a reasonable structure, adopts a modular design, is convenient for disassembly and installation, and improves the convenience of use; the application is provided with a disinfection device and achieves drying through ring rolling to ensure the safety of use.

[0004] The above structure can only deliver the stent catheter, but the end of the guide wire needs to be fixed when the stent catheter moves along the guide wire. The above structure does not fix the end of the guide wire, and the medical staff needs to hold the end of the guide wire.

[0005] Based on this, the present invention designs a device for placing a stent during cardiac surgery to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for placing a stent during cardiac surgery.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for placing a stent during cardiac surgery, comprising a C-shaped frame:

[0008] A straight board is installed at the bottom of the C-frame;

[0009] The straight plate side wall is connected with a stent catheter driving assembly for driving the stent catheter;

[0010] The stent catheter driving assembly includes a driving assembly, a rolling support assembly and a rolling crimping assembly. The driving assembly is connected to the side wall of the straight plate, the rolling support assembly is connected to the driving end of the driving assembly, and the rolling support assembly is fixedly connected to the straight plate. The rolling crimping assembly is located directly above the rolling support assembly, and the rolling crimping assembly is connected to the top of the C-shaped frame.

[0011] A guide wire crimping assembly for guide wire crimping is connected to the bottom of the rolling support assembly;

[0012] The straight plate side wall is connected with a moving distance detection component for monitoring the driving distance of the rolling support component;

[0013] The C-shaped frame is also connected to an electric control component for receiving and sending wireless signals and controlling the driving component, and the electric control component is electrically connected to the driving component and the moving distance detection component.

[0014] Furthermore, the driving assembly includes a driving motor, a first bevel gear, a cross plate and a second bevel gear. The cross plate is fixedly mounted on the side wall of the straight plate close to the upright part of the C-frame. The driving motor is fixedly mounted on the cross plate. The driving end of the driving motor is fixedly connected to the first bevel gear. The first bevel gear is meshingly connected to the second bevel gear, and the second bevel gear is connected to the rolling crimping assembly.

[0015] Furthermore, the rolling support assembly includes a driving wheel, a base plate, a transmission assembly and a transverse axis. The base plate is fixedly mounted on the side wall of the straight plate away from the upright part of the C-frame. The driving wheels are rotatably connected between the base plate and the inner wall of the straight plate at equal intervals. The ends of the driving wheels close to the upright part of the C-frame are fixedly connected to the transverse axis. The adjacent transverse axes are connected through the transmission assembly, and the second bevel gear is fixedly mounted on one set of the transverse axes.

[0016] Furthermore, the rolling crimping assembly includes a first spring, a sliding rod, a pressure wheel, a movable frame and an upper gripping rod. Multiple groups of first springs are fixedly connected to the top of the C-shaped frame, the bottom of the first spring is fixedly connected to the movable frame, the top of the movable frame is fixedly connected to the sliding rod, the top of the sliding rod passes through the first spring and is slidably connected to the straight hole opened in the top of the C-shaped frame, the inner wall of the movable frame is rotatably connected to a pressure wheel arranged one-to-one with the driving wheel, and the end of the movable frame away from the C-shaped frame is fixedly connected to the upper gripping rod.

[0017] Furthermore, the first spring is always in a compressed state.

[0018] Furthermore, the guide wire crimping assembly includes a fixed limit assembly, a movable limit assembly and a reset assembly. The fixed limit is fixedly installed below the base plate, and the movable limit assembly is located directly below the fixed limit assembly. After the fixed limit assembly and the movable limit assembly are fitted together, a group of multi-bend S-shaped grooves are formed at the fitting parts of the fixed limit assembly and the movable limit assembly. The end of the guide wire is located in the S-shaped groove. The movable limit assembly is fixedly connected to the bottom of the end face of the C-frame with multiple groups of reset assemblies. The reset assembly is fixedly connected to the bottom of the base plate. When the reset assembly is in the original position, the fixed limit assembly and the movable limit assembly are in fit and contact.

[0019] Furthermore, the fixed limiting assembly includes a fixed block and an upper curved groove. The fixed block is fixedly installed at the bottom of the base plate, and the bottom of the fixed block is provided with an upper curved groove.

[0020] Furthermore, the movable limit assembly includes a lower grip rod, a movable block and a lower curved groove. The movable block is located directly below. A lower curved groove used in conjunction with the upper curved groove is provided on the top of the movable block. The movable block is fixedly connected to the side wall away from the C-shaped frame with the lower grip rod, and the movable block is fixedly connected to the bottom of the end surface of the C-shaped frame with multiple sets of reset assemblies.

[0021] Furthermore, the reset assembly includes a second spring, an inner cylinder, an outer cylinder and a transverse support block, the transverse support block is fixedly installed at the bottom of the end surface close to the C-shaped frame; the top of the transverse support block is fixedly connected to the outer cylinder and the second spring, the top of the second spring is fixedly connected to the bottom of the base plate, the inner wall of the outer cylinder is slidably connected to the inner cylinder, the top of the inner cylinder is fixedly connected to the bottom of the base plate, and the second spring is located in the inner cylinder.

[0022] Beneficial Effects

[0023] The present invention allows the end of the guide wire to pass through the wire threading hole of the stent catheter, and then place the end of the guide wire into the guide wire crimping assembly. The guide wire crimping assembly is convenient for crimping and fixing the end of the guide wire to prevent the guide wire from following the movement when the stent catheter moves. The rolling crimping assembly is then pulled upward to place the stent catheter on the rolling support assembly, and the rolling crimping assembly is released. The self-restoring force of the rolling crimping assembly drives the rolling crimping assembly to cooperate with the rolling support assembly to wrap the stent catheter, and the length of the guide wire in the patient's body is determined according to the detection data of the X-ray imager and the guide wire scale line, and the data is sent to the electronic control assembly. The electronic control assembly controls the driving assembly, and the driving assembly drives the rolling crimping assembly to rotate. The rolling crimping assembly cooperates with the rolling support assembly to drive the stent catheter to move along the guide wire. The moving distance detection assembly monitors the driving distance of the rolling support assembly by monitoring the rotation trajectory of the rolling support assembly. The electronic control assembly controls the driving assembly according to the data fed back by the moving distance detection assembly, so as to realize automatic movement of the stent catheter, reduce the work pressure of medical staff, and facilitate practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A three-dimensional device for placing a stent in a cardiac surgery according to the present invention Figure 1 ;

[0026] Figure 2 It is a front view of a device for placing a stent during extracardiac surgery of the present invention;

[0027] Figure 3 It is a left side view of a device for placing a stent during extracardiac surgery of the present invention;

[0028] Figure 4 A three-dimensional device for placing a stent in a cardiac surgery according to the present invention Figure 2 ;

[0029] Figure 5 A three-dimensional device for placing a stent in a cardiac surgery according to the present invention Figure 3 ;

[0030] Figure 6 For along Figure 2 AA direction cross-sectional view;

[0031] Figure 7 For along Figure 2 BB direction cross-sectional view;

[0032] Figure 8 For along Figure 2 EE direction cross-sectional view;

[0033] Fig. 9 For along Figure 3 CC direction cross-sectional view;

[0034] Fig.10 for Figure 6 Enlarged view of the structure at D.

[0035] The numbers in the figure represent:

[0036] 1. C-type frame 2. Electronic control component 21. Display screen 22. Button 23. Controller 3. Straight plate 4. Bracket catheter drive component 41. First spring 42. Sliding rod 43. Pressure wheel 44. Driving wheel 45. Bottom plate 46. Movable frame 47. Upper grip rod 48. Transmission component 49. Horizontal axis 410. Driving motor 411. First bevel gear 412. Horizontal plate 414. Second bevel gear 5. Guide wire crimping component 51. Lower grip rod 52. Movable block 53. Fixed block 54. Second spring 55. Inner cylinder 56. Outer cylinder 57. Horizontal support block 58. Upper curved groove 59. Lower curved groove 6. Moving distance detection component 61. Laser sensor 62. Through hole DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The present invention will be further described below in conjunction with the embodiments.

[0039] Embodiment 1

[0040] Please refer to the instruction manual Figure 1-10 , a device for placing a stent during extracardiac surgery, comprising a C-shaped frame 1:

[0041] A straight plate 3 is installed at the bottom of the C-shaped frame 1;

[0042] The side wall of the straight plate 3 is connected with a stent catheter driving assembly 4 for driving the stent catheter;

[0043] The stent catheter driving assembly 4 includes a driving assembly, a rolling support assembly and a rolling crimping assembly, the driving assembly is connected to the side wall of the straight plate 3, the rolling support assembly is connected to the driving end of the driving assembly, and the rolling support assembly is fixedly connected to the straight plate 3, the rolling crimping assembly is located directly above the rolling support assembly, and the rolling crimping assembly is connected to the top of the C-shaped frame 1;

[0044] A guide wire crimping assembly 5 for guide wire crimping is connected to the bottom of the rolling support assembly;

[0045] The side wall of the straight plate 3 is connected with a moving distance detection component 6 for monitoring the driving distance of the rolling support component;

[0046] The C-shaped frame 1 is also connected to an electric control component 2 for wireless signal transmission and control of the driving component, and the electric control component 2 is electrically connected to the driving component and the moving distance detection component 6;

[0047] The end of the guide wire is passed through the wire threading hole of the stent catheter, and then the end of the guide wire is placed in the guide wire crimping assembly 5. The guide wire crimping assembly 5 is convenient for crimping and fixing the end of the guide wire to prevent the guide wire from following the movement when the stent catheter moves. Then, the rolling crimping assembly is pulled upward to place the stent catheter on the rolling support assembly, and the rolling crimping assembly is released. The self-restoring force of the rolling crimping assembly drives the rolling crimping assembly and the rolling support assembly to wrap the stent catheter. The length of the guide wire in the patient's body is determined according to the X-ray imager detection data and the guide wire scale line, and the data is sent to the electronic control assembly 2. The electronic control assembly 2 controls the driving assembly, and the driving assembly drives the rolling crimping assembly to rotate. The rolling crimping assembly and the rolling support assembly cooperate to drive the stent catheter to move along the guide wire. The moving distance detection assembly 6 monitors the driving distance of the rolling support assembly by monitoring the rotation trajectory of the rolling support assembly. The electronic control assembly 2 then controls the driving assembly according to the data fed back by the moving distance detection assembly 6 to realize automatic stent catheter movement, reduce the work pressure of medical staff, and facilitate practical use.

[0048] The driving assembly includes a driving motor 410, a first bevel gear 411, a transverse plate 412 and a second bevel gear 413. The transverse plate 412 is fixedly mounted on the side wall of the straight plate 3 close to the upright portion of the C-shaped frame 1. The driving motor 410 is fixedly mounted on the transverse plate 412. The driving end of the driving motor 410 is fixedly connected to the first bevel gear 411. The first bevel gear 411 is meshedly connected to the second bevel gear 413. The second bevel gear 413 is connected to the rolling crimping assembly.

[0049] The rolling support assembly includes a driving wheel 44, a bottom plate 45, a transmission assembly 48 and a transverse shaft 49. The bottom plate 45 is fixedly mounted on the side wall of the straight plate 3 away from the upright part of the C-shaped frame 1. The driving wheel 44 is rotatably connected between the bottom plate 45 and the inner wall of the straight plate 3 at equal intervals. The ends of the driving wheel 44 close to the upright part of the C-shaped frame 1 are fixedly connected with the transverse shaft 49. The adjacent transverse shafts 49 are connected by transmission assembly 48. The second bevel gear 413 is fixedly mounted on one group of transverse shafts 49.

[0050] The transmission assembly 48 is selected from a sprocket assembly, a pulley assembly or a synchronous belt assembly;

[0051] The rolling crimping assembly includes a first spring 41, a slide bar 42, a pressure wheel 43, a movable frame 46 and an upper gripping rod 47. A plurality of first springs 41 are fixedly connected to the top of the C-shaped frame 1. The bottom of the first spring 41 is fixedly connected to the movable frame 46. The top of the movable frame 46 is fixedly connected to the slide bar 42. The top of the slide bar 42 penetrates the first spring 41 and is slidably connected to the straight hole opened at the top of the C-shaped frame 1. The inner wall of the movable frame 46 is rotatably connected to the pressure wheel 43 arranged one by one corresponding to the driving wheel 44. The end of the movable frame 46 away from the C-shaped frame 1 is fixedly connected to the upper gripping rod 47.

[0052] The first spring 41 is always in a compressed state;

[0053] The end of the guide wire is passed through the wire threading hole of the stent catheter, and then the end of the guide wire is placed in the guide wire crimping assembly 5, which is convenient for crimping and fixing the end of the guide wire to prevent the guide wire from moving with the movement of the stent catheter, and then the upper gripping rod 47 of the rolling crimping assembly is pulled upward, and the upper gripping rod 47 drives the movable frame 46 to move upward, and the movable frame 46 drives the pressing wheel 43 to move downward, and then the stent catheter is placed on the driving wheel 44 of the rolling support assembly, and the upper gripping rod 47 of the rolling crimping assembly is released. The restoring force of the first spring 41 pushes the movable frame 46 to move downward, and the movable frame 46 drives the pressing wheel 43 to move downward until it is in contact with the upper end surface of the catheter stent, and the pressing wheel 43 of the rolling crimping assembly cooperates with the driving wheel 44 of the rolling support assembly to wrap the stent catheter, and the guide wire is determined in the patient according to the detection data of the X-ray imager and the guide wire scale line. The length inside the body is sent to the electronic control component 2, the electronic control component 2 controls the driving component, the driving motor 410 of the driving component drives the first bevel gear 411 to rotate, the first bevel gear 411 drives the second bevel gear 413 to rotate, the second bevel gear 413 drives a group of transverse shafts 49 to rotate, and the transverse shaft 49 drives other transverse shafts 49 to rotate, the transverse shaft 49 drives the driving wheel 44 of the rolling crimping component to rotate, the pressing wheel 43 of the rolling crimping component cooperates with the driving wheel 44 of the rolling support component to drive the stent catheter to move along the guide wire, the moving distance detection component 6 monitors the driving distance of the rolling support component by monitoring the rotation trajectory of the rolling support component, and the electronic control component 2 controls the driving component according to the data fed back by the moving distance detection component 6 to realize automatic stent catheter movement, reduce the work pressure of medical staff, and facilitate practical use.

[0054] The guide wire crimping assembly 5 includes a fixed limit assembly, a movable limit assembly and a reset assembly. The fixed limit assembly is fixedly installed below the bottom plate 45, and the movable limit assembly is located directly below the fixed limit assembly. After the fixed limit assembly and the movable limit assembly are fitted together, a group of multi-bend S-shaped slots are formed at the fitting parts of the fixed limit assembly and the movable limit assembly. The end of the guide wire is located in the S-shaped slot. The movable limit assembly is fixedly connected to the bottom of the end surface of the C-shaped frame 1 with multiple groups of reset assemblies. The reset assembly is fixedly connected to the bottom of the bottom plate 45. When the reset assembly is in the original position, the fixed limit assembly and the movable limit assembly are in contact with each other.

[0055] The fixed limiting assembly includes a fixed block 53 and an upper curved groove 58. The fixed block 53 is fixedly mounted on the bottom of the bottom plate 45. The bottom of the fixed block 53 is provided with an upper curved groove 58.

[0056] The movable limit assembly includes a lower grip rod 51, a movable block 52 and a lower curved groove 59. The movable block 52 is located directly below. The top of the movable block 52 is provided with a lower curved groove 59 used in conjunction with the upper curved groove 58. The side wall of the movable block 52 away from the C-shaped frame 1 is fixedly connected to the lower grip rod 51. The bottom of the end surface of the movable block 52 close to the C-shaped frame 1 is fixedly connected to multiple sets of reset assemblies.

[0057] The reset assembly includes a second spring 54, an inner tube 55, an outer tube 56 and a transverse support block 57. The transverse support block 57 is fixedly installed at the bottom of the end surface close to the C-shaped frame 1; the outer tube 56 and the second spring 54 are fixedly connected to the top of the transverse support block 57, the top of the second spring 54 is fixedly connected to the bottom of the bottom plate 45, the inner wall of the outer tube 56 is slidably connected to the inner tube 55, the top of the inner tube 55 is fixedly connected to the bottom of the bottom plate 45, and the second spring 54 is located in the inner tube 55;

[0058] The second spring 54 is always in a stretched state.

[0059] The end of the guide wire is passed through the wire threading hole of the stent catheter, and then the lower gripping rod 51 of the movable limiting assembly of the guide wire crimping assembly 5 is pulled downward, and the lower gripping rod 51 drives the movable block 52 to move downward, and the movable block 52 drives the transverse support block 57 of the resetting assembly to move downward, and the transverse support block 57 drives the outer cylinder 56 to move along the inner cylinder 55, and the second spring 54 continues to stretch, and the end of the guide wire is placed in the lower curved groove 59, and the lower gripping rod 51 is released. The restoring force of the second spring 54 drives the transverse support block 57 to move upward, and the transverse support block 57 drives the movable block 52 to move upward. After the top of the movable block 52 and the bottom of the fixed block 53 are in contact, the end of the guide wire is located in the upper curved groove 58 and the lower curved groove 59 to form a group of multi-bend S-shaped grooves, and the end of the guide wire is located in the S-shaped groove, which is convenient for crimping and fixing the end of the guide wire to prevent the guide wire from following the movement when the stent catheter moves.

[0060] The moving distance detection component 6 includes a laser sensor 61 and a through hole 62. The laser sensor 61 is fixedly mounted on the side wall of the upright portion of the straight plate 3 close to the C-shaped frame 1. The through holes 62 are evenly spaced along the circumferential direction on a group of driving wheels 44. When the driving wheel 44 rotates, the sensing end of the laser sensor 61 is aligned with the rotation trajectory of the through hole 62.

[0061] The laser sensor 61 has the function of emitting and receiving laser light;

[0062] When the driving wheel 44 rotates, the laser sensor 61 emits a laser, and the signal changes when the laser sensor 61 irradiates the position of the through hole 62 and the position of the driving wheel 44 without a hole. The total number of times and time of signal changes are counted. The total number of through holes 62 on the driving wheel 44 is multiplied by the single driving length of the driving wheel 44 to obtain the driving distance of the driving wheel 44, thereby obtaining the moving length of the stent catheter; the moving length divided by the time can be obtained to obtain the moving speed.

[0063] The electric control assembly 2 includes a display screen 21, a button 22 and a controller 23. The display screen 21 and the button 22 are connected to the top of the C-shaped frame 1, and the controller 23 is installed at the bottom of the C-shaped frame 1. The display screen 21, the button 22, the laser sensor 61 and the drive motor 410 are all electrically connected to the controller 23. The controller 23 is connected to the X-ray imager through a wireless signal transceiver;

[0064] Display screen 21 includes start, stop and emergency stop buttons;

[0065] Button 22 is used for moving length and moving speed;

[0066] The length of the guidewire in the patient's body is determined according to the detection data of the X-ray imager and the guidewire scale line, and the data is sent to the controller 23. The controller 23 controls the driving component. The driving motor 410 of the driving component drives the first bevel gear 411 to rotate, and the first bevel gear 411 drives the second bevel gear 413 to rotate. The second bevel gear 413 drives a group of transverse shafts 49 to rotate, and the transverse shaft 49 drives other transverse shafts 49 to rotate. The transverse shaft 49 drives the driving wheel 44 of the rolling crimping component to rotate, and the pressing wheel 43 of the rolling crimping component cooperates with the driving wheel 44 of the rolling support component to drive the support catheter to move along the guidewire. The moving distance detection component 6 monitors the driving distance of the rolling support component by monitoring the rotation trajectory of the rolling support component. The controller 23 controls the driving component again according to the data fed back by the laser sensor 61 to realize automatic movement of the support catheter, reduce the work pressure of medical staff, and facilitate practical use.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for placing a stent during cardiac surgery, comprising a C-shaped frame (1), characterized in that: A straight plate (3) is installed at the bottom of the C-shaped frame (1); The side wall of the straight plate (3) is connected to a stent catheter driving assembly (4) for driving the stent catheter; The support catheter drive assembly (4) comprises a drive assembly, a rolling support assembly and a rolling crimping assembly, the drive assembly is connected to the side wall of the straight plate (3), the rolling support assembly is connected to the drive end of the drive assembly, and the rolling support assembly is fixedly connected to the straight plate (3), the rolling crimping assembly is located directly above the rolling support assembly, and the rolling crimping assembly is connected to the top of the C-shaped frame (1); A guide wire crimping assembly (5) for guide wire crimping is connected to the bottom of the rolling support assembly; The side wall of the straight plate (3) is connected to a moving distance detection component (6) for monitoring the driving distance of the rolling support component; The C-shaped frame (1) is also connected to an electric control component (2) for receiving and transmitting wireless signals and controlling the driving component. The electric control component (2) is electrically connected to the driving component and the moving distance detection component (6).

2. The device for placing a stent during cardiac surgery according to claim 1, characterized in that: The driving assembly comprises a driving motor (410), a first bevel gear (411), a transverse plate (412) and a second bevel gear (413); the transverse plate (412) is fixedly mounted on a side wall of the straight plate (3) close to the upright portion of the C-shaped frame (1); the driving motor (410) is fixedly mounted on the transverse plate (412); the driving end of the driving motor (410) is fixedly connected to the first bevel gear (411); the first bevel gear (411) is meshingly connected to the second bevel gear (413); and the second bevel gear (413) is connected to the rolling crimping assembly.

3. The device for placing a stent during cardiac surgery according to claim 2, characterized in that: The rolling support assembly comprises a driving wheel (44), a bottom plate (45), a transmission assembly (48) and a transverse shaft (49); the bottom plate (45) is fixedly mounted on a side wall of the straight plate (3) away from the upright position of the C-shaped frame (1); the driving wheel (44) is rotatably connected between the bottom plate (45) and the inner wall of the straight plate (3) at equal intervals; the ends of the driving wheel (44) close to the upright position of the C-shaped frame (1) are fixedly connected to the transverse shaft (49); adjacent transverse shafts (49) are transmission-connected via the transmission assembly (48); and the second bevel gear (413) is fixedly mounted on one group of the transverse shafts (49).

4. The device for placing a stent during cardiac surgery according to claim 3, characterized in that: The rolling crimping assembly comprises a first spring (41), a slide bar (42), a pressure wheel (43), a movable frame (46) and an upper gripping rod (47); a plurality of first springs (41) are fixedly connected to the top of the C-shaped frame (1); the bottom of the first spring (41) is fixedly connected to the movable frame (46); the top of the movable frame (46) is fixedly connected to the slide bar (42); the top of the slide bar (42) passes through the first spring (41) and is slidably connected to a straight hole opened at the top of the C-shaped frame (1); the inner wall of the movable frame (46) is rotatably connected to a pressure wheel (43) arranged one-to-one corresponding to the driving wheel (44); and the end of the movable frame (46) away from the C-shaped frame (1) is fixedly connected to the upper gripping rod (47).

5. The device for placing a stent during cardiac surgery according to claim 4, characterized in that: The first spring (41) is always in a compressed state.

6. The device for placing a stent during cardiac surgery according to claim 5, characterized in that: The guide wire crimping assembly (5) comprises a fixed limit assembly, a movable limit assembly and a reset assembly. The fixed limit assembly is fixedly installed below the bottom plate (45), and the movable limit assembly is located directly below the fixed limit assembly. After the fixed limit assembly and the movable limit assembly are fitted together, a group of multi-bend S-shaped slots are formed at the fitting position of the fixed limit assembly and the movable limit assembly. The end of the guide wire is located in the S-shaped slot. The bottom of the end surface of the movable limit assembly close to the C-shaped frame (1) is fixedly connected to multiple groups of reset assemblies. The reset assembly is fixedly connected to the bottom of the bottom plate (45). When the reset assembly is in the original position, the fixed limit assembly and the movable limit assembly are in fit contact.

7. The device for placing a stent during cardiac surgery according to claim 6, characterized in that: The fixed limiting assembly comprises a fixed block (53) and an upper curved groove (58); the fixed block (53) is fixedly mounted on the bottom of the base plate (45); and the bottom of the fixed block (53) is provided with an upper curved groove (58).

8. The device for placing a stent during cardiac surgery according to claim 7, characterized in that: The movable limit assembly comprises a lower gripping rod (51), a movable block (52) and a lower curved groove (59); the movable block (52) is located directly below; the top of the movable block (52) is provided with a lower curved groove (59) for use in conjunction with the upper curved groove (58); the side wall of the movable block (52) away from the C-shaped frame (1) is fixedly connected to the lower gripping rod (51); and the bottom of the end surface of the movable block (52) close to the C-shaped frame (1) is fixedly connected to multiple groups of reset assemblies.

9. The device for placing a stent during cardiac surgery according to claim 7, characterized in that: The reset assembly comprises a second spring (54), an inner cylinder (55), an outer cylinder (56) and a transverse support block (57); the transverse support block (57) is fixedly installed at the bottom of the end surface close to the C-shaped frame (1); the top of the transverse support block (57) is fixedly connected with the outer cylinder (56) and the second spring (54); the top of the second spring (54) is fixedly connected with the bottom of the bottom plate (45); the inner wall of the outer cylinder (56) is slidably connected with the inner cylinder (55); the top of the inner cylinder (55) is fixedly connected with the bottom of the bottom plate (45); the second spring (54) is located in the inner cylinder (55).

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