Conveying equipment for surgical interventional therapy of congenital heart disease

Abstract

The invention provides conveying equipment for surgical interventional therapy of congenital heart diseases, and belongs to the field of medical equipment. Comprising a guide pipe, a traction pipe and a conveying pipe, the upper end and the lower end of the guide pipe are open, the conveying pipe is located in the traction pipe, a sealing plate is fixedly connected to the lower end of the inner surface of the guide pipe and makes sliding contact with the outer surface of the traction pipe, and a conveying assembly is arranged at the upper end of the conveying pipe; the conveying assembly comprises a fixing sleeve fixedly connected with the upper end of the outer surface of the conveying pipe. By arranging the conveying assembly, a support is clamped and fixed through a contact plate, the support is stored and placed in a guide pipe, a good protection effect on the support in the conveying process can be achieved, and therefore the probability that the support falls off accidentally in the conveying process can be reduced; and therefore, the stability and the safety of the conveying equipment in the working process can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and more specifically, to a delivery device for surgical interventional treatment of congenital heart disease. Background Art

[0002] Congenital heart disease (CHD) refers to abnormalities in cardiovascular structure or function that exist at birth, including ventricular septal defect, atrial septal defect, patent ductus arteriosus and arterial stenosis. For some patients with congenital arterial stenosis, surgical stent implantation is often required according to the location and severity of the arterial stenosis.

[0003] When performing stent implantation for arterial stenosis, a delivery device is usually required to deliver the stent to the narrowed part of the artery. For example, the Chinese patent with the announcement number CN109998610B discloses a delivery device for surgical interventional treatment of congenital heart disease. The delivery device pulls an adjustment steel cable. Under the limitation of the sliding body by the limiting tube structure, the sliding body and the limiting tube structure are bent relative to the fixed tube structure, so that the occluder is bent relative to the fixed tube structure. When the long axis of the aorta is perpendicular to the direction of the ventricular septal defect of the heart valve, the occluder is controlled to be perpendicular to the fixed tube structure, ensuring that the occluder will not be pulled by the pushing steel cable when placed, ensuring that the occluder is completely fitted to the occluded defect, and effectively ensuring the occlusion effect.

[0004] When an existing delivery device delivers a stent, after the delivery tube enters the patient's arterial blood vessel, blood will enter the delivery tube. The flow of blood will not only increase the resistance of the delivery tube to move inside the arterial blood vessel, but the impact of the blood will also cause the stent inside the tube to loosen, thereby increasing the probability of the stent shifting or falling off inside the delivery tube, which will in turn affect the stability and reliability of the stent delivery, and will also have a negative impact on the implantation accuracy of the stent. Summary of the invention

[0005] In view of the problem in the prior art that the stent is easily impacted by blood flow and thus becomes loose and falls off, the object of the present invention is to provide a delivery device for surgical interventional treatment of congenital heart disease.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A delivery device for surgical interventional treatment of congenital heart disease, comprising a catheter, a traction tube and a delivery tube, wherein both upper and lower ends of the catheter are open, the delivery tube is located inside the traction tube, a sealing plate is fixedly connected to the lower end of the inner surface of the catheter, the sealing plate is in sliding contact with the outer surface of the traction tube, and a delivery assembly is arranged at the upper end of the delivery tube;

[0008] The conveying assembly includes a fixed sleeve fixedly connected to the upper end of the outer surface of the conveying pipe, the outer surface of the fixed sleeve is provided with a mounting groove, the inner surface of the mounting groove is fixedly connected with a pin shaft, the outer surface of the pin shaft is rotatably connected with a movable plate, the outer surface of the movable plate is fixedly connected with a contact plate on the side away from the catheter, a bracket is placed on the outer surface of the upper end of the fixed sleeve, and the outer surface of the contact plate is in contact with the outer surface of the bracket on the side away from the movable plate.

[0009] Optionally, the number of the mounting grooves, pin shafts, movable plates and contact plates are all in several groups and distributed in a ring array, the outer surface of the bracket is provided with evenly distributed mesh holes, the outer surface of the movable plate is arc-shaped, the fixing sleeve is ring-shaped, the contact plate is made of elastic material, and the upper end of the fixing sleeve is open.

[0010] Optionally, an expansion component is provided on the inner side of the traction tube, and the expansion component includes a support plate fixedly connected to the upper end of the inner surface of the conveying tube, a sleeve 1 is fixedly connected to the outer surface of the upper end of the support plate, a sleeve 2 is slidably connected to the inner surface of the sleeve 1, a traction strip is fixedly connected to the upper end of the traction strip, and an elastic plate 2 is fixedly connected to the upper end of the sleeve 1, and the upper end of the sleeve 1 is fixedly connected to the outer surface of the lower end of the elastic plate 2.

[0011] Optionally, the upper end of the second elastic plate is fixedly connected to the first elastic plate, the first elastic plate is in contact with the inner surface of the bracket, the first elastic plate and the second elastic plate are both arc-shaped, the outer surface of the fixed sleeve is fixedly connected to a traction rope, the lower end of the traction rope is fixedly connected to an extrusion rod, the extrusion rod is in the shape of a hollow circular ring, the extrusion rod is in sliding contact with the outer surface of the movable plate, the traction rope and the traction strip are both made of elastic material, and the upper end of the inner surface of the catheter is fixedly connected to an extrusion plate.

[0012] Optionally, a sealing assembly is provided on the inner side of the catheter, and the sealing assembly includes an air guide cavity embedded in the inner side of the catheter, the extrusion plate is in a circular ring shape, and the extrusion plate is made of elastic silicone material, the upper end of the air guide cavity is connected with the extrusion plate and the catheter, and the lower end passes through to the lower side of the catheter, and the outer surface of the lower end of the catheter is located on the lower side of the air guide cavity and is fixedly connected with a sealing gasket, and the sealing gasket is made of elastic rubber material.

[0013] Optionally, a fixing seat is fixedly connected to the inner side of the conduit, and a clamping assembly is arranged on the lower side of the fixing seat. The clamping assembly includes a mounting seat fixedly connected to the outer surface of the lower end of the fixing seat, and the mounting seat is in a circular ring shape. A slider is slidably connected to the outer surface of the conveying pipe, and the slider is in a circular ring shape. The outer surface of the slider is fixedly connected to the traction tube, and a top plate is fixedly connected to the upper end of the traction tube. The outer surface of the traction tube is spirally connected to the mounting seat.

[0014] Optionally, an ear seat is fixedly connected to the inner surface of the mounting seat, the ear seats are in several groups and distributed in a ring array, a movable rod is fixedly connected to the outer surface of the ear seat, a swing rod is rotatably connected to the outer surface of the movable rod, a clamping plate is fixedly connected to one end of the swing rod away from the movable rod, the clamping plate is in an arc shape, and the clamping plate is in contact with the outer surface of the conveying pipe.

[0015] Optionally, a lubrication assembly is provided on the inner side of the fixed seat, and the lubrication assembly includes a cavity embedded in the inner side of the fixed seat, a connecting pipe is embedded and fixedly connected to the inner side of the conduit, a gate valve is provided inside the connecting pipe, the connecting pipe is connected to the inside of the cavity, the fixed seat is in a circular shape, and a guide seat is fixedly connected to the outer surface of the fixed seat close to the delivery pipe.

[0016] Optionally, a ball is movably connected to the inner side of the guide seat, and the outer surface of the ball is in rolling contact with the outer surface of the conveying tube. The number of the balls is several groups and distributed in a ring array. An overflow groove is provided on the outer surface of the ball. Contact cotton is embedded and fixedly connected to the inner side of the guide seat. The outer surface of the ball is in rotational contact with the outer surface of the contact cotton. The outer surface of the contact cotton is fixedly connected with absorbent cotton, and the absorbent cotton penetrates into the cavity and is fixedly connected to the fixed seat.

[0017] Optionally, the sleeve 2 is electrically connected to the conveying equipment control system, the top plate is conical and in sliding contact with the outer surface of the lower end of the swing rod, the ball bearing is made of lightweight and wear-resistant material, and the number of the swing rods is several groups and is staggered with the ear seat.

[0018] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0019] In the above scheme, a conveying component is set up, the stent is clamped and fixed by a contact plate, and the stent is stored and placed inside the catheter, which can provide good protection for the stent during the conveying process, thereby reducing the probability of accidental falling off of the stent during the conveying process, and further effectively improving the stability and safety of the conveying equipment during operation.

[0020] By setting up an expansion component, the stent will expand outward under the elastic force of the elastic plate 1, and the stent will open outward from a gathered state before the stent is released, so that the stent can better fit the blood vessel endothelium, reducing the risk of the stent moving inside the blood vessel, and further improving the accuracy of stent delivery and placement.

[0021] By setting up a sealing component and sealing the upper end of the catheter by increasing the volume of the extrusion plate, the probability of blood entering the catheter can be reduced, which can effectively reduce the resistance of the catheter during movement inside the arterial blood vessel. At the same time, it can also reduce the damage of the catheter to the vascular endothelium during movement, thereby improving the smoothness and stability of the catheter delivery process.

[0022] By setting up a lubrication component, the lubricating liquid is applied to the outer surface of the conveying pipe through the ball bearings. The lubricating liquid lubricates the outer surface of the conveying pipe, which can not only improve the stability of the conveying pipe during movement, but also effectively reduce the wear of the conveying pipe during movement, thereby effectively extending the service life of the conveying pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a top view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the lubrication assembly of the present invention;

[0028] Figure 5 For the present invention Figure 2 Middle AA section view;

[0029] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0030] Figure 7 For the present invention Figure 5 The enlarged schematic diagram at C in the middle;

[0031] Figure 8 For the present invention Figure 5 Enlarged schematic diagram at point D in the middle.

[0032] [Reference Signs]

[0033] 11. catheter; 12. extrusion plate; 13. bracket; 14. sealing plate; 15. traction tube; 16. delivery tube; 17. mounting seat; 18. mesh; 19. slider; 20. top plate; 21. movable rod; 22. swing rod; 23. clamping plate; 24. ear seat; 25. fixed seat; 26. connecting pipe; 27. guide seat; 28. ball bearing; 29. ​​contact cotton; 30. absorbent cotton; 31. fixed sleeve; 32. mounting groove; 33. pin; 34. movable plate; 35. contact plate; 36. elastic plate 1; 37. elastic plate 2; 38. sliding sleeve 1; 39. traction strip; 40. sliding sleeve 2; 41. support plate; 42. extrusion rod; 43. traction rope; 44. overflow groove; 45. air guide cavity; 46. cavity; 47. sealing pad.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0036] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0037] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0038] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0039] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0040] like Figures 1 to 8 As shown, an embodiment of the present invention provides a delivery device for surgical interventional treatment of congenital heart disease, including a catheter 11, a traction tube 15 and a delivery tube 16. The catheter 11 is open at both upper and lower ends. The delivery tube 16 is located inside the traction tube 15. A sealing plate 14 is fixedly connected to the lower end of the inner surface of the catheter 11. The sealing plate 14 is in sliding contact with the outer surface of the traction tube 15. A delivery assembly is provided at the upper end of the delivery tube 16.

[0041] The conveying assembly includes a fixing sleeve 31 fixedly connected to the upper end of the outer surface of the conveying pipe 16, the fixing sleeve 31 has a mounting groove 32 on its outer surface, a pin shaft 33 is fixedly connected to the inner surface of the mounting groove 32, a movable plate 34 is rotatably connected to the outer surface of the pin shaft 33, a contact plate 35 is fixedly connected to the outer surface of the movable plate 34 away from the conduit 11, a bracket 13 is placed on the outer surface of the upper end of the fixing sleeve 31, and the outer surface of the contact plate 35 is in contact with the outer surface of the bracket 13 on the side away from the movable plate 34.

[0042] The number of the mounting grooves 32, the pin shafts 33, the movable plates 34 and the contact plates 35 are all in several groups and are distributed in a ring array. The outer surface of the bracket 13 is provided with evenly distributed mesh holes 18. The outer surface of the movable plate 34 is in an arc shape. The fixing sleeve 31 is in a circular ring shape. The contact plate 35 is made of elastic material, and the upper end of the fixing sleeve 31 is open.

[0043] By adopting the above technical solution, during cardiac surgical treatment, for some patients with congenital heart disease, such as patients with left and right ventricular outflow tract stenosis, pulmonary artery and other branch stenosis, it is usually necessary to implant a heart stent 13 to keep the artery open or improve blood flow. With the development of medical technology, for some patients, in order to reduce surgical trauma, a minimally invasive method is usually used to deliver the stent 13 to the lesion. For this purpose, a delivery component is provided. Before the catheter 11 is placed, the stent 13 is first placed on the upper side of the fixing sleeve 31. The mounting groove 32 on the surface of the fixing sleeve 31 is used to fix and support the pin shaft 33. The movable plate 34 is rotatably supported by the pin shaft 33. The stent 13 is clamped and fixed by a plurality of groups of annularly distributed contact plates 35, so that the stent 13 is stored and placed inside the catheter 11. Then the catheter 11 is punctured into the patient's arterial blood vessel and delivered to the heart along the arterial blood vessel. The sealing plate 14 on the lower side of the catheter 11 can play a certain guiding role on the delivery tube 16. After the catheter 11 is delivered to the predetermined position, the operator pushes The delivery tube 16 drives the fixing sleeve 31 to extend to the outside of the catheter 11 through the delivery tube 16, and then releases the stent 13 so that the stent 13 is attached to the inner wall of the arterial blood vessel, thereby expanding the narrowed arterial blood vessel through the stent 13. The stent 13 is made of nickel-titanium alloy, which has superelasticity and shape memory effect, so that it has sufficient radial support force to maintain the open state of the blood vessel, and can also provide better compliance and fatigue resistance, can adapt to the bending and twisting of the blood vessel, while maintaining good wall adhesion, reducing the gap between the blood vessel wall, so as to achieve the corresponding treatment effect, the through hole on the surface of the stent 13 can effectively increase the friction between the stent 13 and the inner wall of the blood vessel, thereby improving the stability of the stent 13 during the placement process, and by setting the delivery component to store the stent 13 inside the catheter 11, it can play a good protective effect on the stent 13 during the delivery process, thereby reducing the probability of accidental detachment of the stent 13 during the delivery process, and then effectively improving the stability and safety of the delivery equipment during operation.

[0044] like Figure 3 , Figure 5 and Figure 7 As shown, an expansion component is provided on the inner side of the traction tube 15, and the expansion component includes a support plate 41 fixedly connected to the upper end of the inner surface of the conveying tube 16, a sleeve 1 38 is fixedly connected to the outer surface of the upper end of the support plate 41, a sleeve 2 40 is slidably connected to the inner surface of the sleeve 1 38, a traction bar 39 is fixedly connected to the outer surface of the upper end of the support plate 41, an elastic plate 2 37 is fixedly connected to the upper end of the traction bar 39, and the upper end of the sleeve 1 38 is fixedly connected to the outer surface of the lower end of the elastic plate 2 37.

[0045] The upper end of the elastic plate 2 37 is fixedly connected to the elastic plate 1 36, and the elastic plate 1 36 is in contact with the inner surface of the bracket 13. The elastic plates 1 36 and 37 are both in arc shape. The outer surface of the fixed sleeve 31 is fixedly connected to a traction rope 43, and the lower end of the traction rope 43 is fixedly connected to an extrusion rod 42, and the extrusion rod 42 is in a hollow ring shape. The extrusion rod 42 is in sliding contact with the outer surface of the movable plate 34. The traction rope 43 and the traction bar 39 are both made of elastic material. The upper end of the inner surface of the catheter 11 is fixedly connected to the extrusion plate 12.

[0046] By adopting the above technical solution, in the initial state, the fixed sleeve 31 pulls and supports the extrusion rod 42 through the traction rope 43. In the initial state, the extrusion rod 42 will be at the upper part of the outer surface of the fixed sleeve 31 under the elastic action of the traction rope 43, and the extrusion rod 42 will contact the outer surface of the movable plate 34 to keep the movable plate 34 in a gathered state, so that the contact plate 35 is driven by the movable plate 34 to clamp the bracket 13. After the bracket 13 is transported to the predetermined position by the conveying component, the bracket 13 needs to be accurately released. For this purpose, an expansion component is provided. When working, the operator The author drives the fixed sleeve 31 to move upward through the conveying pipe 16, thereby driving the bracket 13 to move toward the upper side of the catheter 11 through the fixed sleeve 31. When the fixed sleeve 31 moves to the position of the extrusion plate 12, the bracket 13 moves to the outside of the catheter 11 at the same time, and the outer surface of the extrusion plate 12 will contact the extrusion rod 42. At this time, the extrusion rod 42 will move downward under the resistance of the extrusion plate 12. When the extrusion rod 42 moves to the lower part of the outer surface of the movable plate 34, the extrusion rod 42 will squeeze the movable plate 34, so that the movable plate 34 moves out of the fixed sleeve 31 with the pin shaft 33 as the fulcrum. The movable plate 34 will flip over to the side, at which time the movable plate 34 will drive the contact plate 35 to break contact with the bracket 13. At this time, the bracket 13 will expand outward under the elastic force of the elastic plate 1 36, and the bracket 13 will be opened outward from the gathered state before the bracket 13 is released, so that the bracket 13 can better fit with the vascular endothelium, thereby further improving the accuracy of the delivery and placement of the bracket 13. After the bracket 13 is released, the curvature of the elastic plate 1 36 and the elastic plate 2 37 gradually becomes smaller. At this time, the elastic plate 2 37 will drive the sliding sleeve 1 38 to move upward. When the sliding sleeve 1 38 and the sliding sleeve 2 4 After the contact is broken, the second sleeve 40 sends an electrical signal to the control system of the conveying equipment, thereby reminding the operator that the support 13 has been released. The conveying tube 16 fixes and supports the second sleeve 40 through the supporting plate 41, so that the position of the second sleeve 40 remains stable. The second elastic plate 37 will stretch the traction bar 39 when the arc slows down. The elastic force of the traction bar 39 causes the second elastic plate 37 and the first elastic plate 36 to slowly deform, thereby reducing the probability of excessive deformation of the first elastic plate 36 and the second elastic plate 37, thereby improving the stability of the support 13 during placement.

[0047] like Figure 5As shown, a sealing component is provided on the inner side of the conduit 11, and the sealing component includes an air guide cavity 45 embedded in the inner side of the conduit 11, and the extrusion plate 12 is in a circular ring shape, and the extrusion plate 12 is made of elastic silicone material. The upper end of the air guide cavity 45 is connected with the extrusion plate 12 and the conduit 11, and the lower end passes through the lower side of the conduit 11. The outer surface of the lower end of the conduit 11 is located at the lower side of the air guide cavity 45 and is fixedly connected with a sealing gasket 47, and the sealing gasket 47 is made of elastic rubber material.

[0048] By adopting the above technical solution, before the stent 13 is transported, after the stent 13 is placed inside the catheter 11, the operator inserts the syringe needle through the sealing pad 47 into the air guide cavity 45, and then the operator injects a proper amount of gas into the air guide cavity 45 through the syringe. The gas is injected into the extrusion plate 12 through the air guide cavity 45 to expand the extrusion plate 12, thereby sealing the upper end of the catheter 11 through the increase in the volume of the extrusion plate 12. By reducing the probability of blood entering the catheter 11, the resistance of the catheter 11 during the movement of the arterial blood vessel can be effectively reduced, and the damage of the catheter 11 to the vascular endothelium during the movement can also be reduced, thereby improving the smoothness and stability of the catheter 11 during transportation.

[0049] like Figure 5 and Figure 6 As shown, a fixing seat 25 is fixedly connected to the inner side of the conduit 11, and a clamping assembly is arranged on the lower side of the fixing seat 25. The clamping assembly includes a mounting seat 17 fixedly connected to the outer surface of the lower end of the fixing seat 25, and the mounting seat 17 is in a circular ring shape. A slider 19 is slidably connected to the outer surface of the conveying pipe 16, and the slider 19 is in a circular ring shape. The outer surface of the slider 19 is fixedly connected to the traction tube 15, and a top plate 20 is fixedly connected to the upper end of the traction tube 15. The outer surface of the traction tube 15 is spirally connected to the mounting seat 17.

[0050] The inner surface of the mounting seat 17 is fixedly connected with an ear seat 24, and the ear seats 24 are in several groups and distributed in a ring array. The outer surface of the ear seat 24 is fixedly connected with a movable rod 21, and the outer surface of the movable rod 21 is rotatably connected with a swing rod 22. The swing rod 22 is fixedly connected with a clamping plate 23 at one end away from the movable rod 21. The clamping plate 23 is arc-shaped and contacts the outer surface of the conveying pipe 16.

[0051] By adopting the above technical solution, after the bracket 13 is transported to the predetermined position, a clamping assembly is set to accurately maintain the position of the bracket 13. When the bracket 13 moves to the specified position during operation, the operator rotates the traction tube 15, and the top plate 20 is driven to rotate synchronously by the traction tube 15. The guide tube 11 pulls and supports the mounting seat 17 through the fixed seat 25. The traction tube 15 is connected with the mounting seat 17 through a spiral transmission, and will gradually move upward with the rotation of the traction tube 15. In the process of the traction tube 15 driving the top plate 20 to move upward, the swing rod 22 will be pushed. The mounting seat 17 fixes and supports the ear seat 24, thereby lifting and supporting the movable rod 21 through the ear seat 24. The swing rod 2 Under the thrust of the top plate 20, the top plate 20 will swing with the movable rod 21 as the fulcrum. As the swing rod 22 turns upward, the clamping plate 23 will be driven to fit the surface of the delivery tube 16. The delivery tube 16 is clamped and fixed by a plurality of groups of annularly distributed clamping plates 23, so that the positions of the delivery tube 16 and the catheter 11 remain relatively stable, which can not only reduce the probability of accidental sliding of the delivery tube 16, but also keep the placement position of the stent 13 accurate, thereby further improving the placement quality of the stent 13 and helping to reduce surgical operation errors. The slider 19 on the surface of the traction tube 15 can play a sliding guide role for the delivery tube 16, so that the movement of the delivery tube 16 is more stable.

[0052] like Figure 5 and Figure 7 As shown, a lubrication assembly is provided inside the fixing seat 25, and the lubrication assembly includes a cavity 46 embedded and opened inside the fixing seat 25, a connecting pipe 26 is embedded and fixedly connected inside the conduit 11, a gate valve is provided inside the connecting pipe 26, and the connecting pipe 26 is connected with the inside of the cavity 46, the fixing seat 25 is annular, and a guide seat 27 is fixedly connected to the outer surface of the fixing seat 25 close to the delivery pipe 16.

[0053] A ball 28 is movably connected to the inner side of the guide seat 27, and the outer surface of the ball 28 is in rolling contact with the outer surface of the conveying pipe 16. The number of the balls 28 is several groups and distributed in a ring array. An overflow groove 44 is opened on the outer surface of the ball 28. A contact cotton 29 is embedded and fixedly connected to the inner side of the guide seat 27. The outer surface of the ball 28 is in rotational contact with the outer surface of the contact cotton 29. The outer surface of the contact cotton 29 is fixedly connected with absorbent cotton 30. The absorbent cotton 30 penetrates into the cavity 46 and is fixedly connected to the fixed seat 25.

[0054] The second sleeve 40 is electrically connected to the conveying equipment control system, the top plate 20 is conical and in sliding contact with the outer surface of the lower end of the swing rod 22, the ball 28 is made of lightweight wear-resistant material, and the number of the swing rods 22 is several groups and is staggered with the ear seats 24.

[0055] By adopting the above technical solution, an appropriate amount of lubricating liquid is injected into the cavity 46 inside the fixed seat 25 through the connecting pipe 26, the gate valve inside the connecting pipe 26 is used to control the opening and closing of the connecting pipe 26, the fixed seat 25 fixedly supports the guide seat 27, and the absorbent cotton 30 absorbs the lubricating liquid inside the cavity 46 and transfers it to the inside of the contact cotton 29. During the movement of the delivery pipe 16, its outer surface will be in rotational contact with the ball 28. The rotation of the ball 28 can not only play a good guiding effect on the movement of the delivery pipe 16, but also several groups of balls 28 distributed in an annular array will apply the lubricating liquid to the outer surface of the delivery pipe 16 during the rotation. The overflow groove 44 on the surface of the ball 28 can better store and carry the lubricating liquid. Lubricating the outer surface of the delivery pipe 16 with the lubricating liquid can not only improve the stability of the delivery pipe 16 during the movement, but also effectively reduce the wear of the delivery pipe 16 during the movement, thereby effectively extending the service life of the delivery pipe 16.

[0056] The workflow of the technical solution of the present invention is as follows:

[0057] First, the stent 13 is placed on the upper side of the fixing sleeve 31, and the stent 13 is clamped and fixed by a plurality of groups of annularly distributed contact plates 35, so that the stent 13 is stored and placed inside the catheter 11, and then the upper end of the catheter 11 is sealed by increasing the volume of the squeezing plate 12, and the probability of blood entering the inner wall of the catheter 11 is reduced, and then the catheter 11 is punctured into the patient's arterial blood vessel and transported to the heart along the arterial blood vessel. After the catheter 11 is transported to the predetermined position, the stent 13 is driven to move to the upper side of the catheter 11 by the fixing sleeve 31, and the squeezing rod 42 moves downward under the resistance of the squeezing plate 12, squeezing The pressure rod 42 will squeeze the movable plate 34, causing the movable plate 34 to flip toward the outside of the fixed sleeve 31 with the pin shaft 33 as the fulcrum. At this time, the movable plate 34 will drive the contact plate 35 to break contact with the bracket 13. At this time, the bracket 13 will expand outward under the elastic force of the elastic plate 36, and the delivery tube 16 is clamped and fixed by a plurality of groups of annularly distributed clamping plates 23, so that the position of the delivery tube 16 and the catheter 11 remains relatively stable. Lubricating the outer surface of the delivery tube 16 with the lubricating liquid can not only improve the stability of the delivery tube 16 during the movement, but also effectively reduce the wear of the delivery tube 16 during the movement.

[0058] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A delivery device for surgical interventional treatment of congenital heart disease, comprising a catheter, a traction tube and a delivery tube, characterized in that: The upper and lower ends of the conduit are both open, the delivery tube is located inside the traction tube, a sealing plate is fixedly connected to the lower end of the inner surface of the conduit, the sealing plate is in sliding contact with the outer surface of the traction tube, and a delivery assembly is arranged at the upper end of the delivery tube; The conveying assembly includes a fixed sleeve fixedly connected to the upper end of the outer surface of the conveying pipe, the outer surface of the fixed sleeve is provided with a mounting groove, the inner surface of the mounting groove is fixedly connected with a pin shaft, the outer surface of the pin shaft is rotatably connected with a movable plate, the outer surface of the movable plate is fixedly connected with a contact plate on the side away from the catheter, a bracket is placed on the outer surface of the upper end of the fixed sleeve, and the outer surface of the contact plate is in contact with the outer surface of the bracket on the side away from the movable plate.

2. The delivery device for surgical interventional treatment of congenital heart disease according to claim 1, characterized in that: The number of the mounting grooves, pin shafts, movable plates and contact plates are all in several groups and distributed in a ring array. The outer surface of the bracket is provided with evenly distributed mesh holes. The outer surface of the movable plate is in an arc shape. The fixing sleeve is in a circular ring shape. The contact plate is made of elastic material, and the upper end of the fixing sleeve is open.

3. The delivery device for surgical interventional treatment of congenital heart disease according to claim 2, characterized in that: An expansion component is arranged on the inner side of the traction tube, and the expansion component comprises a support plate fixedly connected to the upper end of the inner surface of the conveying tube, a sleeve 1 is fixedly connected to the outer surface of the upper end of the support plate, a sleeve 2 is slidably connected to the inner surface of the sleeve 1, a traction strip is fixedly connected to the outer surface of the upper end of the support plate, an elastic plate 2 is fixedly connected to the upper end of the traction strip, and the upper end of the sleeve 1 is fixedly connected to the outer surface of the lower end of the elastic plate 2.

4. The delivery device for surgical interventional treatment of congenital heart disease according to claim 3, characterized in that: The upper end of the second elastic plate is fixedly connected to the first elastic plate, the first elastic plate is in contact with the inner surface of the bracket, the first elastic plate and the second elastic plate are both in arc shape, the outer surface of the fixed sleeve is fixedly connected to a traction rope, the lower end of the traction rope is fixedly connected to an extrusion rod, the extrusion rod is in a hollow ring shape, the extrusion rod is in sliding contact with the outer surface of the movable plate, the traction rope and the traction strip are both made of elastic material, and the upper end of the inner surface of the catheter is fixedly connected to the extrusion plate.

5. The delivery device for surgical interventional treatment of congenital heart disease according to claim 4, characterized in that: A sealing component is provided on the inner side of the catheter, and the sealing component includes an air guide cavity embedded in the inner side of the catheter. The extrusion plate is in a circular ring shape and is made of elastic silicone material. The upper end of the air guide cavity is connected with the extrusion plate and the catheter, and the lower end passes through the lower side of the catheter. The outer surface of the lower end of the catheter is located at the lower side of the air guide cavity and is fixedly connected with a sealing gasket, and the sealing gasket is made of elastic rubber material.

6. The delivery device for surgical interventional treatment of congenital heart disease according to claim 5, characterized in that: A fixing seat is fixedly connected to the inner side of the conduit, and a clamping assembly is arranged on the lower side of the fixing seat. The clamping assembly includes a mounting seat fixedly connected to the outer surface of the lower end of the fixing seat, and the mounting seat is in an annular shape. A slider is slidably connected to the outer surface of the conveying pipe, and the slider is in an annular shape. The outer surface of the slider is fixedly connected to the traction pipe, and a top plate is fixedly connected to the upper end of the traction pipe. The outer surface of the traction pipe is spirally connected to the mounting seat.

7. The delivery device for surgical interventional treatment of congenital heart disease according to claim 6, characterized in that: An ear seat is fixedly connected to the inner surface of the mounting seat, and the ear seats are in several groups and distributed in a ring array. A movable rod is fixedly connected to the outer surface of the ear seat, and a swing rod is rotatably connected to the outer surface of the movable rod. A clamping plate is fixedly connected to one end of the swing rod away from the movable rod, and the clamping plate is in an arc shape and contacts the outer surface of the conveying pipe.

8. The delivery device for surgical interventional treatment of congenital heart disease according to claim 7, characterized in that: A lubrication assembly is arranged on the inner side of the fixed seat, and the lubrication assembly includes a cavity embedded and opened on the inner side of the fixed seat. A connecting pipe is embedded and fixedly connected on the inner side of the conduit. A gate valve is arranged inside the connecting pipe, and the connecting pipe is connected with the inside of the cavity. The fixed seat is in a circular ring shape, and a guide seat is fixedly connected to the outer surface of the fixed seat close to the delivery pipe.

9. The delivery device for surgical interventional treatment of congenital heart disease according to claim 8, characterized in that: A ball is movably connected to the inner side of the guide seat, and the outer surface of the ball is in rolling contact with the outer surface of the conveying tube. The number of the balls is several groups and distributed in a ring array. An overflow groove is opened on the outer surface of the ball. Contact cotton is embedded and fixedly connected to the inner side of the guide seat. The outer surface of the ball is in rotational contact with the outer surface of the contact cotton. The outer surface of the contact cotton is fixedly connected with absorbent cotton. The absorbent cotton penetrates into the cavity and is fixedly connected to the fixed seat.

10. The delivery device for surgical interventional treatment of congenital heart disease according to claim 9, characterized in that: The second sliding sleeve is electrically connected to the conveying equipment control system, the top plate is conical and in sliding contact with the outer surface of the lower end of the swing rod, the ball is made of lightweight wear-resistant material, and the number of the swing rods is several groups and staggered with the ear seats.

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