Novel fluid director

Abstract

The invention discloses a novel fluid director, which relates to the technical field of medical apparatus and instruments, and comprises a shell and a film, the shell is internally provided with a sleeve I, a sleeve II, a disc, a rod piece and a blade, and the sleeve I, the sleeve II, the disc, the rod piece and the blade are all wrapped by the film; the first sleeve and the second sleeve are each provided with a rack, the racks are fixed to the first sleeve and the second sleeve and can move along with the first sleeve and the second sleeve, the racks are engaged with the gear, and the gear is fixedly connected with the shell through a cylinder and can freely rotate. The blades and the shell are completely covered with the film and are in a spiral state, the blades are fixedly connected with the disc, and the disc is connected with the first sleeve through a rod piece and can move along with the first sleeve. The movement of the sleeve at one end drives the gear to rotate through the rack so as to drive the rack at the other end to move, so that the two sleeves move together to drive the blades to rotate around the shell, and damage to blood vessels can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a novel flow guide. Background Art

[0002] Vascular bypass surgery is the most commonly used method for treating stenotic cardiovascular disease, but it will face the problem of thrombosis and intimal hyperplasia in the blood vessels after surgery. How to solve this problem has become a key issue that needs to be addressed. Swirling flow can improve the hemodynamic environment and reduce the risk of thrombosis.

[0003] The existing flow guide has been verified through experimental simulation that the flow guide can significantly improve the swirling flow of blood in human blood vessels. The swirling flow effect of the flow guide with a small pitch of the same diameter as the host blood vessel is better. The flow guide can also increase the wall shear stress downstream, reduce the oscillation shear index and relative residence time of the blood downstream of the blood vessel, and greatly improve the hemodynamic environment in the host blood vessel. Therefore, it is necessary to design the flow guide to allow it to enter the blood vessel well and guide the blood to form a swirling flow.

[0004] The swirling flow can sweep away the vortex area, separation area, and blood flow disorder area, making the blood flow more stable, increasing the wall shear force, inhibiting the occurrence of diseases such as atherosclerosis, intimal hyperplasia, and thrombus adhesion, and increasing the blood perfusion of bifurcated blood vessels. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of deflector to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a novel deflector, comprising a shell and a film, wherein a sleeve 1, a sleeve 2, a disc, a rod and a blade are installed in the shell, and the whole of the sleeves are wrapped by the film;

[0007] The sleeve 1 and the sleeve 2 are each provided with a rack, the rack is fixed on the sleeve 1 and the sleeve 2 and can move with the sleeve 1 and the sleeve 2, the rack is meshed with the gear, and the gear is fixedly connected through the column and the shell and can rotate freely;

[0008] The film completely covers the blades and the shell and is in a spiral state. The blades are fixedly connected to the disc. The disc is connected to sleeve one through a rod and can move with sleeve one.

[0009] Preferably, the width of the blade is the same as the thickness of the disc, the blade is connected to the disc and rotates with the rotation of the disc, and the blade is made of stainless steel.

[0010] Preferably, a hole is provided on the surface of the shell, and the hole is used to control the axial direction of the disc, and at the same time fix the gear and control the axial direction of the gear.

[0011] Preferably, the sleeve 1 is radially fixed by the outer shell, the sleeve 2 is radially fixed by the sleeve 1, the outer diameter of the sleeve 2 is equal to the inner diameter of the sleeve 1, and the sleeve 1 and the sleeve 2 are both made of nickel-titanium alloy material.

[0012] Preferably, the racks are respectively arranged on the inner surface of sleeve one and embedded in sleeve two, the parameters of the two racks are the same, and the material of the racks is cast iron.

[0013] Preferably, the gear is fixed to the housing via two cylinders and can maintain circumferential rotation, the gear is meshed with two racks, and the gear is made of cast iron.

[0014] Preferably, the disc is fixed to the outer shell through two long cylinders and keeps circumferential rotation, and is connected to the second sleeve through two short cylinders using a rod, and the up and down movement of the second sleeve drives the disc to roll, and the material used for the disc is cast iron.

[0015] Preferably, a rod is connected to each of the left and right sides of the disc, the rods are exactly the same in size and are made of stainless steel.

[0016] Preferably, a transmission shaft is provided at the end of the sleeve, the transmission shaft is connected to a push rod, and the push rod is slidably connected in the housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The freely retractable flow guide of the present invention can easily enter the blood vessel and start working in the blood vessel, and can be retracted and taken out from the blood vessel after the work is completed.

[0019] 2. The freely retractable deflector disclosed in the present application is driven by gears and racks. The movement of the sleeve at one end will drive the rotation of the gear through the rack and then drive the movement of the rack at the other end, so that the two sleeves move together and drive the blades to rotate around the outer shell, which can reduce damage to blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 for Figure 2 A magnified view of the structure at inner A;

[0023] Figure 4for Figure 2 A magnified view of the structure at inner B;

[0024] Figure 5 This is the internal structure diagram of casing one and casing two.

[0025] In the figure: 1-blade, 2-disc, 3-rod, 4-sleeve 1, 5-sleeve 2, 6-rack, 7-gear, 8 transmission shaft; 9-push rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 5 The present invention provides a technical solution: a novel deflector, comprising a shell and a film, wherein a sleeve 1 4, a sleeve 2 5, a disc 2, a rod 3 and a blade 1 are installed in the shell, and the whole of the sleeve 1 and the blade 1 are wrapped by the film;

[0028] The sleeve 1 4 and the sleeve 2 5 are each provided with a rack 6, the rack 6 is fixed on the sleeve 1 4 and the sleeve 2 5 and can move with the sleeve 1 4 and the sleeve 2 5, the rack 6 is meshed with the gear 7, the gear 7 is fixedly connected to the cylinder and the shell and can rotate freely, because the gear 7 can drive the racks 6 on both sides to move in opposite directions, so that the sleeve 1 4 and the sleeve 2 5 can achieve opposite movements;

[0029] The film completely covers the blade 1 and the shell and is in a spiral state. The blade 1 is fixedly connected to the disc 2. The disc 2 is connected to the sleeve 4 through a rod 3 and can move with the sleeve 4. The blade 1 can be rolled up and stretched by rotating the disc 2.

[0030] In this embodiment, the width of the blade 1 is the same as the thickness of the disc 2. The blade 1 is connected to the disc 2 and rotates with the rotation of the disc 2. The blade 1 is made of stainless steel. The two are connected so that the rotation of the disc 2 can drive the blade 1 to roll up, so that it is in a state of being close to the shell, which is convenient for implantation into the blood vessel. Then, the disc 2 is rotated in the opposite direction, which can cause the blade to dilate and spirally unfold in the blood vessel, so that the blood forms a swirling flow.

[0031] In this embodiment, a hole is provided on the surface of the shell, and the hole is used to control the axial direction of the disk 2 , and fix the gear 7 and control the axial direction of the gear 7 at the same time.

[0032] In this embodiment, the sleeve 1 4 is radially fixed by the outer shell, and the sleeve 2 5 is radially fixed by the sleeve 1 4. The outer diameter of the sleeve 2 5 is equal to the inner diameter of the sleeve 1 4. The sleeve 1 4 and the sleeve 2 5 are both made of nickel-titanium alloy material, so that the sleeve 1 4, the sleeve 2 5 and the outer shell can move relative to each other.

[0033] In this embodiment, the rack 6 is respectively arranged on the inner surface of sleeve 1 4 and embedded in sleeve 2 5. The parameters of the two racks 6 are the same. The material of the rack 6 is cast iron. Because the rack 6 is arranged on both sides of the gear 7, when the rack 6 moves, it can drive sleeve 1 4 and sleeve 2 5 to move respectively.

[0034] In this embodiment, the gear 7 is fixed to the housing through two cylinders and can maintain circumferential rotation. The gear 7 is meshed with two racks 6, and the material of the gear 7 is cast iron.

[0035] In this embodiment, the disc 2 is fixed to the outer shell by two long cylinders 21 and keeps circumferential rotation. It is connected to the sleeve 2 5 by a rod 3 through two short cylinders 22. The disc 2 is driven to roll by the up and down movement of the sleeve 2 5. The material used for the disc 2 is cast iron. When the sleeve 2 5 moves, it pushes or pulls the rod 3 to move forward and backward, and the rod 3 can drive the disc 2 to rotate, thereby driving the blade 1 to rotate.

[0036] In this embodiment, a rod 3 is connected to each of the left and right sides of the disc 2. The rods 3 are completely the same in size and are made of stainless steel.

[0037] In this embodiment, a transmission shaft 8 is provided at the end of the sleeve 4, and the transmission shaft 8 is connected to a push rod 9. The push rod 9 is slidably connected in the outer shell, and an external hook acts on the push rod 9, so that the transmission shaft 8 is driven out by the push rod 9 and finally drives the sleeve 4 to move forward and backward, thereby realizing the winding and expansion of the blade 1.

[0038] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A new type of deflector, characterized in that: It comprises a shell and a film, wherein a sleeve 1 (4), a sleeve 2 (5), a disc (2), a rod (3) and a blade (1) are installed in the shell and are all wrapped by the film; The sleeve 1 (4) and the sleeve 2 (5) are each provided with a rack (6), the rack (6) is fixed on the sleeve 1 (4) and the sleeve 2 (5) and can move with the sleeve 1 (4) and the sleeve 2 (5), the rack (6) is meshed with a gear (7), and the gear (7) is fixedly connected to the cylinder and the housing and can rotate freely; The film completely covers the blade (1) and the shell and is in a spiral state. The blade (1) is fixedly connected to the disc (2). The disc (2) is connected to the sleeve (4) through a rod (3) and can move with the sleeve (4).

2. A novel flow deflector according to claim 1, characterized in that: The width of the blade (1) is the same as the thickness of the disc (2); the blade (1) is connected to the disc (2) and rotates with the rotation of the disc (2); and the blade (1) is made of stainless steel.

3. A novel flow deflector according to claim 1, characterized in that: The surface of the shell is provided with a hole, and the hole is used to control the axial direction of the disc (2), and at the same time fix the gear (7) and control the axial direction of the gear (7).

4. A novel flow deflector according to claim 1, characterized in that: The sleeve one (4) is radially fixed by the outer shell, and the sleeve two (5) is radially fixed by the sleeve one (4). The outer diameter of the sleeve two (5) is equal to the inner diameter of the sleeve one (4). Both the sleeve one (4) and the sleeve two (5) are made of nickel-titanium alloy.

5. A novel flow deflector according to claim 1, characterized in that: The racks (6) are respectively arranged on the inner surface of the first sleeve (4) and embedded in the second sleeve (5). The parameters of the two racks (6) are the same, and the material of the racks (6) is cast iron.

6. A novel flow deflector according to claim 1, characterized in that: The gear (7) is fixed on the housing through two cylinders and can maintain circumferential rotation. The gear (7) is meshed with two racks (6). The material of the gear (7) is cast iron.

7. A novel flow deflector according to claim 1, characterized in that: The disc (2) is fixed to the outer shell through two long cylinders (21) and keeps circumferential rotation. It is connected to the second sleeve (5) through two short cylinders (22) using a rod (3). The up and down movement of the second sleeve (5) drives the disc (2) to roll. The material used for the disc (2) is cast iron.

8. The novel flow deflector according to claim 1 is characterized in that: The left and right sides of the disc (2) are each connected to a rod (3), the rods (3) are completely the same in size and are made of stainless steel.

9. A novel flow deflector according to claim 1, characterized in that: A transmission shaft (8) is provided at the end of the sleeve 1 (4), and the transmission shaft (8) is connected to a push rod (9), and the push rod (9) is slidably connected in the housing.

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