CN-117814853-B - Degradable plugging device implantation system

CN117814853BCN 117814853 BCN117814853 BCN 117814853BCN-117814853-B

Abstract

The application relates to a degradable plugging device implantation system which comprises a plugging device main body composed of an upper disc, a lower disc and a hollow waist, wherein the upper disc, the lower disc and the waist are formed by braiding wires made of degradable materials, an upper connecting piece comprises an upper connecting part and an upper combining part, a lower connecting piece comprises a lower connecting part and a lower combining part, a conveying device comprises a core connecting piece, a sleeve connecting piece and an outer sheath tube, the sleeve connecting piece is coaxially and movably arranged on the outer sheath tube, a channel is formed in the middle of the sleeve connecting piece, the core connecting piece is movably arranged in the channel, the upper end of the core connecting piece is detachably connected with the upper connecting part, and the sleeve connecting piece is detachably connected with the lower connecting part. According to the application, the upper connecting piece is pulled by the core connecting piece to move on the inner side of the waist, so that the upper connecting piece and the lower connecting piece are close to and combined together relatively, the upper disc and the lower disc are unfolded and fit with the room space, the problem of poor plugging effect of the degradable plugging device is solved, and the risk of thrombus falling off can be reduced.

Inventors

CHEN ZHONGHUI
SUN MING
CHEN SONG

Assignees

武汉唯柯医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20231229

Claims (4)

1. A degradable stopper implantation system comprising a stopper body comprising an upper disc, a lower disc and a hollow waist, the upper disc, lower disc and waist being braided and formed from a wire made of a degradable material, characterized in that it further comprises: an upper connecting piece connected to the middle part of the upper plate, which comprises an upper connecting part and an upper combining part; The lower connecting piece is connected to the middle part of the lower disc and comprises a lower connecting part and a lower combining part; The conveying device comprises a core connecting piece, a sleeve connecting piece and an outer sheath pipe, wherein the sleeve connecting piece is coaxially and movably arranged in the outer sheath pipe, a channel is formed in the middle of the sleeve connecting piece, the core connecting piece is movably arranged in the channel, the upper end of the core connecting piece is detachably connected with the upper connecting part, the sleeve connecting piece is detachably connected with the lower connecting part, and the core connecting piece can pull the upper connecting piece to move on the inner side of the waist to enable the upper combining part to be connected with the lower combining part; The core connecting piece comprises a core wire, the upper connecting piece comprises a connecting hole formed at the lower end of the upper connecting piece, the connecting hole laterally penetrates through the upper connecting piece, the core wire can penetrate through the connecting hole and then is bent back to the channel, the upper combining part comprises a buckle formed at the position, close to the lower end, of the upper connecting piece, the lower combining part comprises a clamping groove formed at the upper end of the lower connecting piece, the buckle can enter the clamping groove and is clamped with the clamping groove, the upper connecting piece comprises a connecting body and a plurality of connecting wires, through holes are formed in the middle of the connecting body, the first ends of the connecting wires form knot knots at the upper end openings of the through holes and knot knots at the lower end openings of the through holes, the knot knots and the lower connecting wires fix the connecting body to the knot at the lower connecting body, and the knot is fixed at the upper end of the connecting body, and the knot is formed at the lower end of the second connecting disc.
2. The degradable occluder implantation system of claim 1, wherein the second end of one of the connecting wires is connected to the middle portion of the upper disc and the connection points of the remaining second ends of the connecting wires to the upper disc are eccentrically disposed with respect to the upper disc.
3. The degradable stopper implantation system of claim 2, wherein when a portion of the connection points are located at the edge of the upper disc, the stopper body further comprises a wire control rack, the wire control rack comprises a plurality of wire control rods, one ends of the wire control rods are arranged in the middle of the upper end of the upper disc, the other ends of the wire control rods extend along the radial direction of the upper disc to be close to the edge of the upper disc, two ends of the wire control rods are connected with the upper disc, and all the wire control rods are uniformly distributed inside the upper disc along the center of the upper disc.
4. The degradable occlusion device implantation system of claim 3, wherein said wire control rod is a degradable alloy structure.

Description

Degradable plugging device implantation system Technical Field The invention relates to the technical field of medical product structural design, in particular to a degradable plugging device implantation system. Background The current main treatment means of congenital heart disease patients are surgical open chest surgery or percutaneous interventional surgery, which uses patch repair or simple suture to repair heart defects, and the percutaneous interventional surgery is to implant a NiTi alloy plugging device under X-ray development to plug the defects. With the development of science and technology, surgical minimally invasive transthoracic surgery is a new hybrid surgical mode which integrates the advantages of surgical external thoracic and percutaneous interventions. The implantation and defect blocking of the NiTi plugging device can be completed by the ultrasonic guidance in the operation. The NiTi occluder has problems due to the existence of metal materials, such as metal corrosiveness, nickel ion precipitation, nickel ion allergy, conduction block, other cardiac intervention operation of the later stage of a patient influenced by metal residues, influence of metal implants on nuclear magnetic resonance examination of the patient and the like, and the first clinical implantation of the NiTi alloy occluder is 20 years later, so that the long-term safety is still questioned. Thus, there is a great long-term potential for the development of degradable occluders. The degradable plugging device is made of degradable metal and degradable polymer, but the plugging device made of metal or polymer cannot be completely unfolded after being released from the conveyer sheath, so that the plugging device cannot be assembled with the room space 201, and the room space is easy to leak blood, as shown in fig. 1, the plugging device is in a completely unfolded state of being designed in advance and is assembled with two side walls of the room space 101 in the ideal unfolded state of the plugging device, as shown in fig. 2, the plugging device is in a unfolded state of the traditional degradable plugging device, and the plugging device cannot be completely unfolded, so that the plugging device cannot be restored to the design state, cannot be assembled with the side walls of the room space 201, and the plugging effect of the degradable plugging device is greatly reduced, and the risk of thrombus falling is increased. Disclosure of Invention Based on the above description, the invention provides a degradable plugging device implantation system, which aims to solve the technical problems that in the prior art, a plugging device made of a degradable material cannot be fully expanded in a patient due to poor memory performance, so that the plugging effect is reduced and the safety risk is increased. The technical scheme for solving the technical problems is as follows: A degradable occluder implant system comprising an occluder body comprising an upper disc, a lower disc and a hollow waist, the upper disc, lower disc and waist being woven from threads of degradable material, further comprising: an upper connecting piece connected to the middle part of the upper plate, which comprises an upper connecting part and an upper combining part; The lower connecting piece is connected to the middle part of the lower disc and comprises a lower connecting part and a lower combining part; The conveying device comprises a core connecting piece, a sleeve connecting piece and an outer sheath pipe, wherein the sleeve connecting piece is coaxially and movably arranged in the outer sheath pipe, a channel is formed in the middle of the sleeve connecting piece, the core connecting piece is movably arranged in the channel, the upper end of the core connecting piece is detachably connected with the upper connecting portion, the sleeve connecting piece is detachably connected with the lower connecting portion, and the core connecting piece can pull the upper connecting piece to move inside the waist to enable the upper connecting portion to be connected with the lower connecting portion. Compared with the prior art, the technical scheme of the application has the following beneficial technical effects: According to the degradable plugging device implantation system provided by the application, on the basis of a traditional degradable plugging device, the upper connecting piece and the lower connecting piece are additionally arranged, the upper end of the core connecting piece is detachably connected with the upper connecting piece through the specially designed conveying device, the sleeve connecting piece is detachably connected with the lower connecting piece, then the upper connecting piece is pulled to move on the inner side of the waist through the core connecting piece to enable the upper connecting piece and the lower connecting piece to be close to and relatively combined together, the middle part of the upper disc and the middle p