Telescopic movable stent and interventional heart prosthesis valve
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A movable stent and artificial heart technology, applied in the field of medical devices, can solve problems such as adverse postoperative effects, affecting ventricular systolic and diastolic, left ventricular outflow tract obstruction, etc., and achieve the effect of reducing the difficulty of grasping
Active Publication Date: 2020-06-12
UNIV OF SHANGHAI FOR SCI & TECH
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[0015] 2. Hooking and grabbing the chord tendon excessively elevates the apical muscle, affecting the normal contraction and relaxation of the ventricle
If the subvalvular height of the artificial valve stent is too high, it will affect the original heart structure and heart function, cause chordae tendon rupture, touch the papillary muscle and other heart tissue abnormalities, and at the same time easily cause left ventricular outflow tract obstruction and induce adverse postoperative effects
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[0065] The invention relates to an interventional artificial heart prosthesis valve. Such as figure 1 , figure 2 As shown, in this embodiment, the interventional prosthetic heart valve includes a stent body 10 , a skirt 20 and a leaflet 30 .
[0066] Stent body 10 (that is, the supporting and positioning structure of the artificial heart prosthesis valve, used for bearing leaflets, attaching skirts, anchoring and positioning, etc.) is made of shape memory alloys, such as NiTi (nickel-titanium alloy), CuAlNi (copper-aluminum-nickel alloy )Wait. NiTi is preferred in the present invention.
[0067] The skirt 20 (that is, one or more layers of film attached to the inner surface or outer surface or both surfaces of the stent and has functions such as sealing and preventing paravalvular leakage) is made of polymer materials, such as PTFE (polytetrafluoroethylene), PET (polyethylene terephthalate), etc. The 20 skirts can also be made from biological tissue materials such as ani...
specific Embodiment approach
[0211] 1. Prosthetic valve loading process:
[0212] Such as Figure 24 As shown, the delivery device is basically composed of Tip head, traction rope, sheath tube, fixed ear and fixed head. In addition to the components shown in the figure, there are also conventional components such as manual or electric handles, catheters, and guide wires. This embodiment No elaboration on this.
[0213] ①The prosthetic valve was loaded in an ice-water bath below 5°C outside the body.
[0214] ② Connect the upper bracket 103 and the lower bracket 104 with the traction rope issued from the loading tool.
[0215] ③The prosthetic valve is compressed to a smaller size through a special loading tool and loading method, and then the fixed ear 101 is snapped into the fixed ear hole, and the prosthetic valve is completely wrapped in the sheath by pulling the fixed head.
[0216] ④ Fill the sheath with saline, etc., empty the air inside, and then push the sheath to fit the tip completely to achie...
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Abstract
The invention relates to a telescopic movable stent and an interventional heart prosthesis valve, the telescopic movable stent comprises an upper-layer stent, a lower-layer stent and a traction piece,and the upper-layer stent comprises an upper-layer stent wall and a plurality of straight sleeves; the lower-layer stent is movably arranged at the lower part of the upper-layer stent and comprises alower-layer stent wall, a plurality of straight rods and a plurality of connecting pieces; one end of the traction piece is connected with the straight rod, and the other end of the traction piece penetrates the straight sleeve, the upper-layer stent wall is in an inverted circular truncated cone shape; the plurality of straight sleeves are respectively arranged on the wall of the upper-layer stent; a concave linear slideway communicated with the outside is arranged in the straight sleeve; a plurality of grooves are formed in the inner wall of the linear slideway; extension lines of the plurality of straight sleeves are intersected at the same point of the axis of the upper-layer stent wall; the lower-layer stent wall is in an inverted circular truncated cone shape, the straight rods arearranged on the lower-layer stent wall corresponding to the straight sleeves respectively, the straight rods are provided with protruding strips, a plurality of buckles are arranged on the outer wallsof the protruding strips, and the lower-layer stent is connected with or separated from the lower-layer stent, so that the distance between the end of the upper-layer stent and claw lugs is changed.
Description
technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a telescopic movable bracket and an interventional artificial heart prosthesis valve. Background technique [0002] Cardiac prosthetic valves are artificially manufactured organs that can be implanted in the heart to replace the original heart valves and control the one-way flow of blood in each chamber of the heart. At present, heart prosthetic valve interventional surgery at home and abroad is still immature, and there are many defects in the structural design of prosthetic valves. [0003] The heart is the most important organ in the body of vertebrates. Its main function is to provide pressure for blood flow and to move blood to all parts of the body. The heart consists of four chambers, the left atrium, left ventricle, right atrium, and right ventricle. Both the left and right atria and the left and right ventricles are separated and do not communicate with eac...
Claims
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Application Information
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