A nitinol tube with alloy coating for cardiac stent delivery

Abstract

The invention discloses an alloy-coated hypotube for delivering a heart stent, which relates to the field of medical devices and comprises a hypotube body and a heart stent body, wherein the hypotube body is located in the middle of the heart stent body. The alloy-coated hypotube for delivering a heart stent according to the invention has a drug-applying ring that can deliver drug solution through the drug-applying tube when in use, and can flow out through a leak hole when in use, which is convenient for applying drug to the lesion and for treatment, a second airbag that can be inflated through the second air tube when in use, and can be adjusted and fixed after the heart stent body is expanded, which can increase the stability of the heart stent body and improve the delivery success rate of the heart stent body, a through ring that can penetrate the artery when in use, and can make the hypotube body more convenient to move forward in the artery, and a cleaning tooth that can clean the blockage in the artery when in use can clear the artery.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to an alloy-coated hypotube for delivering a heart stent. Background Art

[0002] Heart stents, also known as coronary artery stents, are commonly used medical devices in cardiac interventional surgery. They have the function of clearing arterial blood vessels. The main materials are stainless steel, nickel-titanium alloy or cobalt-chromium alloy. They have gone through the development process of metal stents, drug-coated stents and bioabsorbable stents. During the delivery of heart stents, hypotubes are needed to deliver them to the designated location.

[0003] The existing hypotube expands and fixes the heart stent at the lesion site through an airbag when in use, thereby completing the delivery of the heart stent. However, after the existing hypotube is installed, the heart stent can no longer be adjusted, and the heart stent is prone to instability. Secondly, the existing hypotube is not convenient for applying medicine to the lesion site when in use, and the hypotube is easily blocked in the artery and has general permeability. For this reason, we propose an alloy-coated hypotube for delivering a heart stent. Summary of the invention

[0004] The main purpose of the present invention is to provide an alloy coated hypotube for delivering a heart stent, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an alloy coated hypotube for conveying a heart stent, comprising a hypotube body and a heart stent body, the hypotube body being located in the middle of the heart stent body, a connector being provided on the outer surface of one end of the hypotube body, an upper medicine ring, a first air bag, a second air bag and a through ring being provided on the outer wall of the hypotube body, the upper medicine ring being located on one side of the first air bag, the first air bag being located on one side of the second air bag, the second air bag being located on one side of the through ring, a puncture head being provided on the outer surface of the other end of the hypotube body, a first trachea, a second trachea and an upper medicine tube being provided in the middle of the connector, the first trachea being located above the second trachea, the second trachea being located on the upper medicine tube, a leak hole being provided on the outer surface of one end of the upper medicine ring, a connecting rod being provided in the middle of the through ring, and cleaning teeth being provided on the outer wall of the connecting rod.

[0006] Preferably, the outer wall of the hypotube body is detachably connected to the inner wall of the upper medicine ring, and the upper medicine ring and the leak hole are an integrally formed structure.

[0007] Preferably, the outer wall of the hypotube body is detachably connected to the outer surfaces of both ends of the first airbag, and the outer wall of the hypotube body is detachably connected to the outer surfaces of both ends of the second airbag.

[0008] Preferably, the outer wall of the hypotube body is detachably connected to the inner wall of the through ring, and the inner surface of one end of the through ring is detachably connected to the outer surface of one end of the connecting rod.

[0009] Preferably, the outer wall of the connecting rod is detachably connected to the outer surface of one end of the cleaning tooth, and the number of the connecting rods is eight groups.

[0010] Preferably, the inner wall of the connecting head is detachably connected to the outer wall of the first air pipe, the first air pipe passes through the interior of the sea wave tube body, the first air pipe is connected to the first air bag, the inner wall of the connecting head is detachably connected to the outer wall of the second air pipe, the second air pipe passes through the interior of the sea wave tube body, and the second air pipe is connected to the second air bag.

[0011] Preferably, the inner wall of the connector is detachably connected to the outer wall of the medicine-applying tube, the medicine-applying tube penetrates into the interior of the hypotube body, and the medicine-applying tube is connected to the medicine-applying ring.

[0012] Preferably, the outer surface of one end of the hypotube body is detachably connected to the outer surface of one end of the connector, and the outer surface of the other end of the hypotube body is detachably connected to the outer surface of one end of the puncture head.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the alloy coated hypotube for delivering a heart stent, the drug applying ring can deliver the drug solution through the drug applying tube when in use, and the drug solution can flow out through the leakage hole when in use, which can facilitate the application of the drug to the lesion and facilitate the treatment; the second airbag can be inflated through the second air tube when in use, and can be adjusted and fixed after the expansion of the heart stent body is completed, which can increase the stability of the heart stent body and improve the delivery success rate of the heart stent body; the through ring can penetrate the artery when in use, so that the hypotube body can move forward in the artery more conveniently; the cleaning teeth can clean the blockage in the artery when in use, and can have the effect of clearing the artery, and the effect of use is better than that of the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an alloy-coated hypotube for delivering a heart stent according to the present invention;

[0015] Figure 2 This is a structural diagram of an alloy-coated hypotube connector 3 for delivering a heart stent according to the present invention;

[0016] Figure 3 It is a front view structural diagram of a drug ring 4 on an alloy-coated hypotube for delivering a heart stent according to the present invention;

[0017] Figure 4Front view structure diagram of the through-ring 7 of the alloy-coated nitinol tube for cardiac stent delivery according to the present invention;

[0018] Figure 5 An alloy-coated nitinol tube for cardiac stent delivery according to the present invention Figure 1 Enlarged structure diagram at position B in it;

[0019] Figure 6 An alloy-coated nitinol tube for cardiac stent delivery according to the present invention Figure 1 Enlarged structure diagram at position A in it.

[0020] In the figure: 1, nitinol tube body; 2, cardiac stent body; 3, connector; 4, medicine application ring; 5, first airbag; 6, second airbag; 7, through-ring; 8, puncture head; 9, first trachea; 10, second trachea; 11, medicine application tube; 12, leakage hole; 13, connecting rod; 14, cleaning teeth. Detailed implementation manners

[0021] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0022] As Figures 1-6 shown, an alloy-coated nitinol tube for cardiac stent delivery includes a nitinol tube body 1 and a cardiac stent body 2. The nitinol tube body 1 is located in the middle of the cardiac stent body 2. A connector 3 is provided on the outer surface of one end of the nitinol tube body 1. A medicine application ring 4, a first airbag 5, a second airbag 6 and a through-ring 7 are provided on the outer wall of the nitinol tube body 1. The medicine application ring 4 is located on one side of the first airbag 5. The first airbag 5 is located on one side of the second airbag 6. The second airbag 6 is located on one side of the through-ring 7. A puncture head 8 is provided on the outer surface of the other end of the nitinol tube body 1. A first trachea 9, a second trachea 10 and a medicine application tube 11 are provided in the middle of the connector 3. The first trachea 9 is located above the second trachea 10. The second trachea 10 is located on the medicine application tube 11. A leakage hole 12 is provided on the outer surface of one end of the medicine application ring 4. A connecting rod 13 is provided in the middle of the through-ring 7. Cleaning teeth 14 are provided on the outer wall of the connecting rod 13.

[0023] Furthermore, the outer wall of the nitinol tube body 1 is detachably connected to the inner wall of the medicine application ring 4. The medicine application ring 4 and the leakage hole 12 are of an integrally formed structure. The medicine application ring 4 can be used to deliver liquid medicine through the medicine application tube 11 during use and can flow out through the leakage hole 12 during use, which is convenient for applying medicine to the diseased area and facilitating treatment.

[0024] Furthermore, the outer wall of the sea wave tube body 1 is detachably connected to the outer surfaces of both ends of the first airbag 5, and the outer wall of the sea wave tube body 1 is detachably connected to the outer surfaces of both ends of the second airbag 6. The first airbag 5 can be inflated through the first air tube 9 when in use, so that the heart stent body 2 can be expanded and fixed in the artery to support the artery. The second airbag 6 can be inflated through the second air tube 10 when in use, and the heart stent body 2 can be adjusted and fixed after the expansion is completed, which can increase the stability of the heart stent body 2 and improve the delivery success rate of the heart stent body 2.

[0025] Furthermore, the outer wall of the sea wave tube body 1 is detachably connected to the inner wall of the through ring 7, and the inner surface of one end of the through ring 7 is detachably connected to the outer surface of one end of the connecting rod 13. When in use, the through ring 7 can penetrate the artery, allowing the sea wave tube body 1 to move forward in the artery more conveniently.

[0026] Furthermore, the outer wall of the connecting rod 13 is detachably connected to the outer surface of one end of the cleaning teeth 14. There are eight groups of connecting rods 13. When in use, the cleaning teeth 14 can clean blockages in the arteries and have the effect of clearing the arteries.

[0027] Furthermore, the inner wall of the connecting head 3 is detachably connected to the outer wall of the first air tube 9, the first air tube 9 passes through the interior of the sea wave tube body 1, the first air tube 9 is connected to the first airbag 5, the inner wall of the connecting head 3 is detachably connected to the outer wall of the second air tube 10, the second air tube 10 passes through the interior of the sea wave tube body 1, the second air tube 10 is connected to the second airbag 6, the first air tube 9 facilitates the inflation of the first airbag 5, and the second air tube 10 facilitates the inflation of the second airbag 6.

[0028] Furthermore, the inner wall of the connector 3 is detachably connected to the outer wall of the upper medicine tube 11 , the upper medicine tube 11 penetrates into the interior of the hypotube body 1 , and the upper medicine tube 11 is connected to the upper medicine ring 4 , so that the upper medicine tube 11 facilitates drug delivery to the upper medicine ring 4 .

[0029] Furthermore, the outer surface of one end of the hypotube body 1 is detachably connected to the outer surface of one end of the connector 3, and the outer surface of the other end of the hypotube body 1 is detachably connected to the outer surface of one end of the puncture head 8. When in use, the puncture head 8 can facilitate the hypotube body 1 to move forward in the artery.

[0030] It should be noted that the present invention is an alloy coated hypotube for delivering a heart stent. When in use, the hypotube body 1 can be passed through the heart stent body 2, and the heart stent body 2 can be placed at the position of the first airbag 5. The hypotube body 1 can be placed in the artery by puncture, and then the hypotube body 1 can be delivered to the lesion with the heart stent body 2. When the hypotube body 1 moves forward, the through ring 7 can expand the artery, which can facilitate the passage of the heart stent body 2. When the artery contains blockages, the cleaning teeth 14 can hook and clean part of the blockage for passage. When in use, the cleaning teeth 14 are inside the through ring 7 and will not damage the artery. After the heart stent body 2 is delivered to the lesion, it can be delivered through the first airbag 9. The first airbag 5 is inflated so that the first airbag 5 drives the heart stent body 2 to expand, and the heart stent body 2 is fixed at the lesion site to expand the arterial blood vessel. Then the first airbag 5 can be deflated through the first air tube 9, and the sea wave tube body 1 can be recovered. During the recovery, if the fixation of the heart stent body 2 is not stable enough, the second airbag 6 can be inflated through the second air tube 10, and the second airbag 6 can be inflated to expand and fix the unstable part again, thereby improving the stability of the heart stent body 2 and the success rate of conveying the heart stent body 2. When in use, the medicine can be conveyed to the medicine ring 4 through the medicine tube 11, and can flow out through the leakage hole 12 when in use, which can facilitate the application of medicine to the lesion site and facilitate treatment, which is more practical.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An alloy-coated hypotube for delivering a heart stent, comprising a hypotube body (1) and a heart stent body (2), characterized in that: The hypotube body (1) is located in the middle of the heart stent body (2); a connector (3) is provided on the outer surface of one end of the hypotube body (1); an upper medicine ring (4), a first airbag (5), a second airbag (6) and a through ring (7) are provided on the outer wall of the hypotube body (1); the upper medicine ring (4) is located on one side of the first airbag (5); the first airbag (5) is located on one side of the second airbag (6); the second airbag (6) is located on one side of the through ring (7); and the hypotube body The outer surface of the other end of the connecting head (1) is provided with a puncture head (8), the middle part of the connecting head (3) is provided with a first air tube (9), a second air tube (10) and an upper medicine tube (11), the first air tube (9) is located above the second air tube (10), the second air tube (10) is located on the upper medicine tube (11), the outer surface of one end of the upper medicine ring (4) is provided with a leakage hole (12), the middle part of the through ring (7) is provided with a connecting rod (13), and the outer wall of the connecting rod (13) is provided with cleaning teeth (14); The outer wall of the hypotube body (1) is detachably connected to the inner wall of the upper medicine ring (4), and the upper medicine ring (4) and the leak hole (12) are an integrally formed structure; The outer wall of the hypotube body (1) is detachably connected to the outer surfaces of both ends of the first airbag (5), and the outer wall of the hypotube body (1) is detachably connected to the outer surfaces of both ends of the second airbag (6); The outer wall of the hypotube body (1) is detachably connected to the inner wall of the through ring (7), and the inner surface of one end of the through ring (7) is detachably connected to the outer surface of one end of the connecting rod (13); The outer wall of the connecting rod (13) is detachably connected to the outer surface of one end of the cleaning tooth (14), and the number of the connecting rods (13) is eight groups; The inner wall of the connecting head (3) is detachably connected to the outer wall of the first air pipe (9), the first air pipe (9) passes through the interior of the hypotube body (1), the first air pipe (9) is connected to the first airbag (5), the inner wall of the connecting head (3) is detachably connected to the outer wall of the second air pipe (10), the second air pipe (10) passes through the interior of the hypotube body (1), and the second air pipe (10) is connected to the second airbag (6).

2. The alloy-coated hypotube for delivering a heart stent according to claim 1, characterized in that: The inner wall of the connector (3) is detachably connected to the outer wall of the upper medicine tube (11); the upper medicine tube (11) penetrates into the interior of the hypotube body (1); and the upper medicine tube (11) is connected to the upper medicine ring (4).

3. The alloy-coated hypotube for delivering a heart stent according to claim 1, characterized in that: The outer surface of one end of the hypotube body (1) is detachably connected to the outer surface of one end of the connector (3), and the outer surface of the other end of the hypotube body (1) is detachably connected to the outer surface of one end of the puncture head (8).

Images