Bidirectional soft barb large vessel covered stent

Abstract

The utility model discloses a bidirectional soft barb great blood vessel covered stent, which relates to the technical field of medical instruments and comprises two holding parts, the bottoms of the two holding parts are fixedly connected with a protective component, and the inner wall of the protective component is movably sleeved with a blood vessel covered stent component. The left side of the blood vessel covered stent assembly is fixedly connected with a forceps holder assembly, the protection assembly comprises a protection sleeve, the left side and the right side of the top of the outer surface of the protection sleeve are fixedly connected with the bottoms of two holding parts, and a plurality of clamping grooves are formed in the inner wall of the protection sleeve. According to the bidirectional soft barb large blood vessel covered stent, the limiting soft rings on the outer surface of the blood vessel covered stent body are combined with the clamping grooves, the anchoring force of the blood vessel covered stent body in the two side directions can be further improved conveniently, meanwhile, the limiting soft rings on the outer surface of the blood vessel covered stent body are utilized, and the anchoring force of the blood vessel covered stent body is improved. The pressure of lap joint between the inner wall of the blood vessel and the inner wall of the blood vessel is reduced, and the blood wall is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a bidirectional soft barbed large blood vessel covered stent. Background Art

[0002] Most of the aortic stents currently used in clinical practice adopt a design method of coating the surface of a highly elastic metal stent. This method mainly provides a certain degree of anchoring through the pressure generated by the stent on the blood vessel wall and the friction of the coating surface. The diameter of the selected metal stent after expansion is generally larger than the inner diameter of the patient's own blood vessel, which makes it easy for the stent to tear the fragile blood vessel endothelium, thereby causing complications such as new dissections and endoleaks. The elasticity of the metal stent is much greater than that of the blood vessel. If the patient's aortic intima has severe lesions, the pressure of the metal stent will cause the stent to directly break into the false lumen, which is an extremely high-risk complication. Some vascular stents are designed with metal barbs with a small number of barbs. Although the anchoring force of the stent can be increased, it also increases the damage to the blood vessel endothelium. The high-hardness stent is not conducive to its use and release, and it is not easy to pass through the curved aorta.

[0003] For example, a Chinese patent with announcement number CN215425310U discloses a bidirectional soft barbed large blood vessel covered stent, including a blood vessel covered stent body, an inflatable balloon and an inner ring braided layer, wherein barbs are arranged on the left and right sides of the outer wall of the blood vessel covered stent body, a suture skirt is arranged on the left side of the blood vessel covered stent body, an inflatable balloon is arranged on the left side of the blood vessel covered stent body, an inflatable balloon is arranged on the surface of the inflatable balloon, an inner ring braided layer is arranged on the inner cavity side wall of the blood vessel covered stent body, and reinforcing ribs are arranged on the inner cavity of the inner ring braided layer. The structure is reasonable, and the suture skirt, inflatable balloon and inflatable balloon are arranged on the left side of the blood vessel covered stent body to facilitate the introduction of the stent and prevent it from falling off. The barbs are arranged on the outer wall of the blood vessel covered stent body to increase the anchoring force of the stent, and the inner ring braided layer and reinforcing ribs are arranged in the inner cavity of the blood vessel covered stent to improve the structural strength of the device.

[0004] The existing technology has the following problems:

[0005] However, the problem of vascular stents not having sufficient anchoring force to cause loosening does not produce excessive pressure on the vascular endothelium, so that they can better fit the inner wall of the artery, otherwise they will easily damage the inner wall of the artery. Utility Model Content

[0006] The utility model provides a bidirectional soft barbed large blood vessel covered stent to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A bidirectional soft barbed large blood vessel covered stent comprises two holding parts, the bottoms of the two holding parts are fixedly connected with protection components, the inner walls of the protection components are movably sleeved with a blood vessel covered stent component, and the left side of the blood vessel covered stent component is fixedly connected with a clamp component.

[0009] Preferably: the protection assembly includes a protective sleeve, the left and right sides of the top of the outer surface of the protective sleeve are fixedly connected to the bottom of the two holding parts, the inner wall of the protective sleeve is provided with a plurality of slots, and the inner wall of the protective sleeve is movably connected to the outer surface of the vascular coated stent assembly.

[0010] Preferably: the vascular covered stent assembly includes a vascular covered stent body, a plurality of load-reducing holes are opened on the outer surface of the vascular covered stent body, soft barbs are fixedly connected to the left and right sides of the inner wall of the vascular covered stent body, and a plurality of reinforcing ribs are fixedly connected to the opposite surfaces of the two soft barbs.

[0011] Preferably, the outer surface of the vascular covered stent body is fixedly connected with a plurality of limiting soft rings, and the outer surfaces of the plurality of limiting soft rings overlap with the inner walls of the plurality of slots.

[0012] Preferably, the clamp assembly comprises an inflatable balloon, the right side of the inflatable balloon is connected to the left side of the vascular covered stent body, and the left side of the inflatable balloon is fixedly connected with a clamp tube.

[0013] Preferably: a plurality of air holes are opened on the left surface of the clamp tube, an air pump is fixedly connected to the inner wall of the air hole, a control valve is fixedly connected to the inner wall of the air hole, and the control valve is located on the right side of the air pump.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] 1. The utility model provides a bidirectional soft barbed large blood vessel covered stent. Through the combination of the limiting soft ring on the outer surface of the blood vessel covered stent body and the card groove, it is convenient to further improve the anchoring force of the blood vessel covered stent body on both sides. At the same time, the limiting soft ring on the outer surface of the blood vessel covered stent body is also used to reduce the pressure of the overlap with the inner wall of the blood vessel, thereby better protecting the blood wall.

[0016] 2. The utility model provides a bidirectional soft barbed large blood vessel covered stent, and then combines the inflatable balloon and the inflatable balloon to facilitate the introduction of the stent, and uses the vacuum pump on the inner wall of the pore to inflate and deflate the inflatable balloon. The control valve is used to control the air inlet of the pore to assist the vacuum pump, thereby adjusting the size of the inflatable balloon and improving the stability of the outer wall connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional enlarged structural schematic diagram of the protection component of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a vascular covered stent assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the side structure of the vascular covered stent assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of an enlarged structure of the clamp assembly of the utility model;

[0022] Figure 6 For the utility model Figure 5 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. holding part; 2. protection component; 21. protection sleeve; 22. slot; 3. vascular covered stent component; 31. vascular covered stent body; 32. soft barb; 33. load-reducing hole; 34. limiting soft ring; 35. reinforcing rib; 4. clamping assembly; 41. clamping tube; 42. inflatable airbag; 43. air hole; 44. vacuum pump; 45. control valve. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 As shown, a bidirectional soft barbed large blood vessel covered stent comprises two holding parts 1, the bottoms of the two holding parts 1 are fixedly connected with a protection component 2, the inner wall of the protection component 2 is movably sleeved with a blood vessel covered stent component 3, and the left side of the blood vessel covered stent component 3 is fixedly connected with a clamp component 4.

[0026] The protection component 2 assists the two holding parts 1 and the vascular covered stent component 3 to be stably installed at the predetermined positions, and the vascular covered stent component 3 assists the installation of the clamp component 4.

[0027] like Figure 2 - Figure 4As shown, the protection component 2 includes a protection sleeve 21, and the left and right sides of the top outer surface of the protection sleeve 21 are fixedly connected to the bottom of the two holding parts 1, and the inner wall of the protection sleeve 21 is provided with a plurality of slots 22. The inner wall of the protection sleeve 21 is movably connected to the outer surface of the vascular coated stent assembly 3. The vascular coated stent assembly 3 includes a vascular coated stent body 31, and the outer surface of the vascular coated stent body 31 is provided with a plurality of load-reducing holes 33. The left and right sides of the inner wall of the vascular coated stent body 31 are fixedly connected with soft barbs 32, and the opposite surfaces of the two soft barbs 32 are fixedly connected with a plurality of reinforcing ribs 35. The outer surface of the vascular coated stent body 31 is fixedly connected with a plurality of limiting soft rings 34, and the outer surfaces of the plurality of limiting soft rings 34 overlap with the inner walls of the plurality of slots 22.

[0028] By providing a protective sleeve 21, the vascular coated stent body 31 and the limiting soft ring 34 are protected to avoid damage to the inner wall of the blood vessel during installation. When the holding part 1 on one side and one side of the vascular coated stent body 31 are clamped by the medical device, the protective sleeve 21 is convenient to be taken out, which plays a better role in protecting the vascular coated stent body 31 and preventing damage to the outer surface of the vascular coated stent body 31, thereby reducing the damage to the inner wall of the blood vessel; at the same time, the limiting soft ring 34 on the outer surface of the vascular coated stent body 31 is combined with the card groove 22 to facilitate further improving the anchoring force of the vascular coated stent body 31 in the two-way direction. At the same time, the limiting soft ring 34 on the outer surface of the vascular coated stent body 31 is also used to reduce the pressure of the overlap with the inner wall of the blood vessel, thereby further protecting the blood wall.

[0029] like Figure 5 , Figure 6 As shown, the clamp assembly 4 includes an inflatable balloon 42, the right side of the inflatable balloon 42 is connected to the left side of the vascular coated stent body 31, the left side of the inflatable balloon 42 is fixedly connected to a clamp tube 41, a plurality of air holes 43 are opened on the left side surface of the clamp tube 41, the inner wall of the air hole 43 is fixedly connected to an air pump 44, the inner wall of the air hole 43 is fixedly connected to a control valve 45, and the control valve 45 is located on the right side of the air pump 44.

[0030] At the same time, the clamp tube 41 and the inflatable airbag 42 are combined to facilitate the introduction of the bracket, and the vacuum pump 44 on the inner wall of the air hole 43 is used to inflate and deflate the inflatable airbag 42. The control valve 45 is used to control the air inlet of the air hole 43 to assist the vacuum pump 44, thereby adjusting the size of the inflatable airbag 42 and improving the stability of the outer wall connection.

[0031] The working principle of the utility model is as follows: by setting a protective sleeve 21, the vascular coated stent body 31 and the limiting soft ring 34 are protected to avoid damaging the inner wall of the blood vessel during installation. When the holding part 1 on one side and one side of the vascular coated stent body 31 are clamped by the medical device, the protective sleeve 21 is convenient to take out, which plays a better role in protecting the vascular coated stent body 31 and preventing damage to the outer surface of the vascular coated stent body 31, thereby reducing the effect of damage to the inner wall of the blood vessel; at the same time, the limiting soft ring 34 on the outer surface of the vascular coated stent body 31 is combined with the card slot 22 to facilitate further improvement. The anchoring force of the vascular covered stent body 31 is high in both sides, and the limiting soft ring 34 on the outer surface of the vascular covered stent body 31 is also used to reduce the pressure of the overlap with the inner wall of the blood vessel, thereby better protecting the blood wall; at the same time, the clamp tube 41 and the inflatable balloon 42 are combined, and the vacuum pump 44 on the inner wall of the air hole 43 is used to inflate and deflate the inflatable balloon 42, and the control valve 45 is used to control the air inlet of the air hole 43 to assist the vacuum pump 44, thereby adjusting the size of the inflatable balloon 42, facilitating the introduction of the stent, and improving the stability of the outer wall connection.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bidirectional soft barbed large blood vessel covered stent, comprising two holding parts (1), characterized in that: The bottoms of the two holding parts (1) are fixedly connected with a protection component (2), the inner wall of the protection component (2) is movably sleeved with a blood vessel stent graft component (3), and a clamp component (4) is arranged on the left side of the blood vessel stent graft component (3).

2. A bidirectional soft barbed large vessel covered stent according to claim 1, characterized in that: The protection assembly (2) comprises a protection sleeve (21), the left and right sides of the top of the outer surface of the protection sleeve (21) are fixedly connected to the bottom of the two holding parts (1), the inner wall of the protection sleeve (21) is provided with a plurality of slots (22), and the inner wall of the protection sleeve (21) is movably connected to the outer surface of the vascular stent graft assembly (3).

3. The bidirectional soft barbed large vessel covered stent according to claim 1, characterized in that: The vascular coated stent assembly (3) comprises a vascular coated stent body (31), a plurality of load-reducing holes (33) are provided on the outer surface of the vascular coated stent body (31), soft barbs (32) are fixedly connected to the left and right sides of the inner wall of the vascular coated stent body (31), and a plurality of reinforcing ribs (35) are fixedly connected to the opposite surfaces of the two soft barbs (32).

4. A bidirectional soft barbed large vessel covered stent according to claim 3, characterized in that: The outer surface of the blood vessel covered stent body (31) is fixedly connected to a plurality of limiting soft rings (34), and the outer surfaces of the plurality of limiting soft rings (34) overlap with the inner walls of the plurality of clamping grooves (22).

5. The bidirectional soft barbed large vessel covered stent according to claim 1, characterized in that: The clamp assembly (4) comprises an inflatable balloon (42), the right side of the inflatable balloon (42) is connected to the left side of the vascular coated stent body (31), and the left side of the inflatable balloon (42) is fixedly connected to a clamp tube (41).

6. The bidirectional soft barbed large vessel covered stent according to claim 5, characterized in that: A plurality of air holes (43) are provided on the left surface of the clamp tube (41), and an air pump (44) is fixedly connected to the inner wall of the air hole (43). A control valve (45) is fixedly connected to the inner wall of the air hole (43), and the control valve (45) is located on the right side of the air pump (44).

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