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CN-121971208-A - Heart vessel stent and take-out device thereof

CN121971208ACN 121971208 ACN121971208 ACN 121971208ACN-121971208-A

Abstract

The invention discloses a cardiac vascular stent and a taking-out device thereof, which comprises a catheter, wherein a guide mechanism is arranged in the catheter, an expanding mechanism is connected to the guide mechanism in a sliding manner, a taking-out mechanism is arranged on the expanding mechanism, a guide wire is inserted into the top of a cardiac vascular from a radial artery, the catheter is inserted into the vascular through the guide wire guide, a trachea with the taking-out mechanism is inserted into the cardiac vascular along the inside of the catheter, an air bag moves to the cardiac stent through an imaging device, air is input into an air inlet head to expand the air bag by a certain distance, the distance between a flexible metal plate and the cardiac stent is reduced, an electromagnet controller is started to realize the magnetization of a flexible connecting sheet, at the moment, the flexible metal plate is also magnetized, the stent on the inner wall of the vascular is sucked by the flexible metal plate, the cardiac stent is pulled to enter the catheter, the damage of the cardiac stent to the vascular is reduced, the cardiac stent is taken out after the cardiac stent is completely pulled out from the catheter, and the vascular elasticity and subsequent treatment of a patient are protected.

Inventors

  • Ye Fanhao

Assignees

  • 叶凡豪

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. A cardiovascular stent, which comprises a stent body, characterized by comprising the following steps: The magnetic support comprises a support body (1) formed by grid-shaped tube bodies, wherein the support body (1) comprises at least one magnetic attraction section (101), the magnetic attraction section (101) is used for generating radial folding deformation under the action of magnetic force, and the support body (1) is covered with eluting medicines.
  2. 2. A cardiovascular stent-out device for fitting a cardiovascular stent as claimed in claim 1, comprising a catheter (2), characterized in that: The guide mechanism (4) is arranged in the catheter (2), the guide mechanism (4) is connected with the expansion mechanism (5) in a sliding manner, the extraction mechanism (6) is arranged on the expansion mechanism (5), the expansion mechanism (5) is used for expanding to enable the extraction mechanism (6) to correspond to the magnetic suction section (101), and the extraction mechanism (6) is used for being fixed with the magnetic suction section (101) in a magnetic suction manner; The expansion mechanism (5) comprises an air pipe (501), the outer side of the guide mechanism (4) is connected with the air pipe (501) in a sliding mode, an air pipe (503) is arranged in the air pipe (501), an air bag (505) is arranged on the air pipe (501), two pressing rings (504) are sleeved on the air bag (505), the air bag (505) is clamped between the pressing rings (504) and the air pipe (501), the taking-out mechanism (6) comprises a wire (603), the wire (603) is arranged in the air pipe (503), one end of the wire (603) is electrically connected with an electromagnet controller (601), a switch (602) is arranged on the electromagnet controller (601), a mounting groove (605) is formed in the surface of the air pipe (501) on the inner side of the air bag (505), a iron rod (604) is arranged on the mounting groove (605), two ends of the iron rod (606) are respectively connected with the positive electrode and the negative electrode of the wire (607), two flexible connecting pieces (607) are fixedly connected with two flexible connecting pieces (603), and two flexible connecting pieces (603) are fixedly connected with one flexible connecting piece (603).
  3. 3. The device according to claim 2, wherein the flexible connection pieces (607) are provided with two groups opposite to each other with respect to the axis of the iron rod (604), and the flexible connection pieces (607) of two groups are each provided with a flexible metal plate (608).
  4. 4. The cardiovascular stent removal device as set forth in claim 1, wherein the iron rod (604) is disposed hollow inside, and the thickness of the iron rod (604) is equal to the thickness of the mounting groove (605), and the surface of the air tube (501) is flush with the surface of the iron rod (604).
  5. 5. The device according to claim 1, wherein the expansion mechanism (5) further comprises an air inlet head (502), an air inlet head (502) with an L-shaped structure is arranged at the end of the air pipe (501), the air inlet head (502) is communicated with the air passage (503), and the conducting wire (603) penetrates through the outer side of the air inlet head (502).
  6. 6. A cardiovascular stent removal device as claimed in claim 1, wherein the inner opening of the flexible connecting piece (607) is arranged, and the guide wire (603) penetrates through the opening of the flexible connecting piece (607).
  7. 7. A cardiovascular stent removal device according to claim 1, characterized in that the guiding means (4) comprises a guide wire (401), the inner side of the trachea (501) being slidingly connected with the guide wire (401), the guide wire (401) having a length greater than the length of the catheter (2).
  8. 8. The device according to claim 7, wherein the guiding mechanism (4) further comprises a guide head (402), the guide head (402) is fixedly connected to the end of the guide wire (401), and the guide head (402) has a truncated cone-shaped structure.
  9. 9. The device for removing the cardiovascular stent according to claim 1, wherein a positioning mechanism (3) is installed on the catheter (2), the positioning mechanism (3) comprises a sheath tube (301), the sheath tube (301) is slidably connected to the outer side of the catheter (2), and a handle (302) is fixedly connected to the sheath tube (301).
  10. 10. The device for removing the cardiovascular stent according to claim 7, wherein the guide wire (401) is provided with a protection mechanism (7), the protection mechanism (7) comprises a fixing ring (701), the guide wire (401) is provided with the fixing ring (701), a knob (702) is connected to the fixing ring (701) in a threaded manner, the knob (702) is in interference with the guide wire (401), and two blocking rods (703) in interference with the end part of the air pipe (501) are fixedly connected to the side wall of the fixing ring (701) relatively.

Description

Heart vessel stent and take-out device thereof Technical Field The invention relates to the technical field of cardiac stents, in particular to a cardiac vascular stent and a taking-out device thereof. Background A cardiovascular stent is a medical device for treating Coronary Artery Disease (CAD), whose core function is to restore the blood supply to the heart by physically supporting a stenosed or occluded vessel. A cardiovascular stent is a tiny metallic or drug-coated mesh tubular device that is implanted into a coronary artery stenosed site by catheter technology to keep the vessel open and prevent restenosis. In order to prevent restenosis of a blood vessel, the existing cardiovascular stent is usually permanently installed in the heart vessel after installation, and the heart vascular stent which cannot be taken out can cause limited elasticity of the blood vessel, abnormal endothelial function and side branch circulation inhibition, and besides, subsequent treatment limitation, such as restenosis in the stent or other vascular lesions needing to be treated, the original stent part can become an operation difficulty, if a patient needs to undergo a heart bypass operation in future, the implanted stent can increase operation complexity, and particularly when the stent is positioned at the vascular part planned to bypass, the stent can generate artifacts in MRI or CT examination, so that evaluation of adjacent tissues or lesions is influenced. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a cardiovascular stent and a taking-out device thereof In order to achieve the above purpose, the present invention provides the following technical solutions: A cardiovascular stent, comprising: the support body that comprises latticed body, the support body includes at least one magnetism and inhales the section, magnetism inhale the section and be used for producing radial drawing in deformation under the magnetic force effect, the support body covers outward has the elution medicine. The heart vessel stent taking-out device is used for being matched with the heart vessel stent and comprises a catheter, wherein a guide mechanism is arranged in the catheter, an expansion mechanism is connected to the guide mechanism in a sliding mode, a taking-out mechanism is arranged on the expansion mechanism and used for expanding to enable the taking-out mechanism to correspond to the magnetic suction section, and the taking-out mechanism is used for being fixed with the magnetic suction section in a magnetic suction mode; The expansion mechanism comprises an air pipe, the outer side of the guide mechanism is slidably connected with the air pipe, the air pipe is internally provided with an air passage, the air pipe is provided with an air bag, two compression rings are sleeved on the air bag, the air bag is clamped between the compression rings and the air pipe, the extraction mechanism comprises a wire, the inside of the air passage is provided with the wire, one end of the wire is electrically connected with an electromagnet controller, a switch is arranged on the electromagnet controller, the switch is positioned on the surface of the air pipe inside the air bag, an installation groove is formed in the surface of the air pipe, an iron rod is arranged on the installation groove, a coil is wound on the iron rod, two ends of the coil are respectively connected with the positive electrode and the negative electrode of the wire, two flexible connecting sheets are fixedly connected onto the iron rod relatively, and flexible metal plates are fixedly connected onto the two flexible connecting sheets In order to increase the suction force of the flexible metal plate on the heart support and avoid the mutual interference of magnetic fields, as a preferable scheme of the invention, two groups of flexible connecting sheets are oppositely arranged about the axle center of the iron rod, and the flexible metal plates are arranged on the two groups of flexible connecting sheets. In order to increase the compactness of the connection of the air pipe and the iron rod, the guide wire is convenient to enter the blood vessel, and as a preferable scheme of the invention, the iron rod is arranged in a hollow mode, the thickness of the iron rod is equal to that of the mounting groove, and the surface of the air pipe is flush with the surface of the iron rod. In order to realize that the pressure is provided by the booster pump to send gas into the air bag, the expansion of the air bag is realized, the expansion of the flexible metal plate is completed, and the magnetic force is better, as a preferable scheme of the invention, the expansion mechanism further comprises an air inlet head, the end part of the air pipe is provided with an L-shaped air inlet head, the air inlet head is communicated with the air passage, and the lead penetrates through the outer side of the air inlet head. In order