CN115887063A - Locking method of ring-shrinking device and ring-shrinking system - Google Patents

Abstract

The invention discloses a ring-shrinking device, wherein the ring-shrinking device (100) is provided with a first ring part (110) and a second ring part (120), a first connecting part (130) is arranged between the first ring part (110) and the second ring part (120), the ring-shrinking device (100) further comprises a filiform piece (200), and the locking method is characterized by comprising the following steps: -fixing the wire (200) to one end of the first connection portion (130) in a knotted manner; wrapping the filamentary member (200) around the first connection portion (130) to cover the first connection portion (130); -fixing the wire (200) to the other end of the first connection portion (130) in a knotted manner; according to the locking method of the ring-shrinking device, the wire-shaped piece is wound on the first connecting part between the first ring part and the second ring part and is coated on the first connecting part, the first connecting part is fixed, and the first connecting part cannot be deformed or misplaced even in the conveying and releasing process of the ring-shrinking device.

Description

Locking method of ring-shrinking device and ring-shrinking system

Technical Field

The invention relates to the field of medical instruments, in particular to a locking method of a locking device and an annular shrinking system.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

Mainly applied to treating mitral regurgitation of patients. The annuloplasty device is placed in the coronary sinus or great cardiac vein of a patient for annuloplasty to reduce mitral regurgitation. The mitral valve is a part of the heart, located between the left atrium and the left ventricle. The mitral valve closes to prevent blood from being pumped back into the left atrium when the left ventricle contracts to pump blood throughout the body. In some patients, the mitral valve fails to close normally, whether due to genetic malformation, disease, or injury, resulting in a condition known as regurgitation, i.e., blood is pumped into the atrium with each contraction of the heart muscle. Reflux is a severe, often rapidly deteriorating condition that reduces the efficiency of the cycle and must be corrected.

There are several more common ways of repairing mitral regurgitation, either surgery or minimally invasive interventions. Surgery supports the mitral valve by replacing it with a mechanical valve, securing it near the mitral valve, or suturing some ring. Cardiac surgery is a high risk and requires an opening in the patient's chest to gain access to the heart and the assistance of devices such as external circulation. The risk of such surgery is often relatively high.

The minimally invasive interventional operation is to use a blood vessel passage in a human body to convey an implant to a specified position through a catheter. The main intervention methods include artificial chordae tendineae implantation, mitral valve annuloplasty, mitral valve rim-to-rim repair, and the like. Wherein the annuloplasty includes a direct annuloplasty and an indirect annuloplasty. Indirect annuloplasty is mainly to constrict the mitral annulus by tightening the vascular tissue around the mitral annulus, so that the mitral valve can be closed and compacted. The implant is placed in the coronary sinus-great cardiac vein, mainly around the blood vessels around the mitral annulus, which is also one of the best locations for indirect annuloplasty.

Disclosure of Invention

Based on the above, the invention provides a locking method of a ring-contracting device, which is used for solving the technical problem that the ring-contracting device is easy to misplace when released in a body.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a locking method of a ring-type retraction device, wherein the ring-type retraction device 100 is provided with a first ring part 110 and a second ring part 120, a first connecting part 130 is arranged between the first ring part 110 and the second ring part 120, the ring-type retraction device 100 further comprises a wire-shaped piece 200, and the locking method comprises the following steps: securing the filamentary member 200 to one end of the first connector 130 in a knotted manner; wrapping the wire 200 around the first connection 130 to cover the first connection 130; the filamentary member 200 is secured to the other end of the first connector 130 in a knotted manner.

The locking method of the ring-shrinking device provided by the invention has the advantages that the first connecting part between the first ring part and the second ring part is wound with the filiform piece and is formed to be coated on the first connecting part, the first connecting part is fixed, even in the conveying and releasing processes of the ring-shrinking device, the first connecting part can not be deformed and misplaced,

in some embodiments of the locking method of the ring-contracting device of the present invention, the ring-contracting device comprises a first anchor wire 140 and a second anchor wire 150, the first connecting portion 130 is formed by the first anchor wire 140 and the second anchor wire 150 being cross-wound and twisted, and the locking method comprises:

cross-connecting the first anchor wire 140 and the second anchor wire 150 at one end of the first connection 130 to form the first cross-point 131;

the first anchor wire 140 and the second anchor wire 150 are cross-connected at the other end of the first connection portion 130 to form the second cross-point 132.

In some embodiments of the method for locking a ring-contracting device of the present invention, the knotting method comprises:

dividing the wire 200 into a first length of wire 201 and a second length of wire 202;

forming a first perforation 141 by crossing the first length of wire 201 and the second length of wire 202 with each other;

threading the first anchor wire 140 or the second anchor wire 150 at the first intersection or the second intersection into the first through hole 141, or threading the first anchor wire and the second anchor wire into the first through hole 141 simultaneously;

by pulling the first length of wire 201 and the second length of wire 202 in different directions, the first through hole 141 is gradually tightened and fixed to the first anchor wire 140 or the second anchor wire 150, or both the first anchor wire 140 and the second anchor wire 150.

In some embodiments of the method for locking a ring-contracting device of the present invention, the knotting comprises:

dividing the wire 200 into a first length 201 and a second length 202 in a double-over manner;

forming a second through hole 142 at the doubled-over position of the filament 200 and one end of the first connecting portion 130 together, and forming one end of the first connecting portion 130 through the second through hole 142, or forming a second through hole 142 at the doubled-over position of the filament 200 and the first anchor wire or the second anchor wire at the first intersection or the second intersection together, and forming the first anchor wire 140 or the second anchor wire 150 through the second through hole 142,

by tightening the first length of wire 201 and the second length of wire 202, the second through hole 142 is gradually tightened and fixed to one end of the first connection portion 130 or the first anchor wire or the second anchor wire.

In some embodiments of the method for locking a ring-type retractor of the present invention, the wrapping the wire around the first connection portion to cover the first connection portion comprises:

the wire 200 is helically wound around the first connection 130 and forms a helical coil 210 that wraps around the first connection 130.

In some embodiments of the locking method of the ring-contracting device of the present invention, the locking method comprises:

securing the wire 200 in a knotted fashion at one end of the first connection 130 and separating into a first length 201 and a second length 202;

the first length of wire 201 and the second length of wire 202 are simultaneously spirally wound on the first connection portion 130 and form a spiral coil 210 covering the first connection portion 130;

the first length of wire 201 and the second length of wire 202 secure the first connection 130 in a knotted manner at the other end of the first connection 130.

In some embodiments of the locking method of the present ring-down device,

securing the filamentary member to the first anchor wire at the first or second intersection in a knotted manner,

spirally winding a first length of wire (201) and a second length of wire (202) around the first connection, with the first length of wire (201) and the second length of wire (202) being wound around the first connection in a direction opposite to a direction of the second anchor wire around the first anchor wire.

In some embodiments of the locking method of the present ring-down device,

securing said wire 200 to said first anchor wire or said second anchor wire at said first intersection point in a knotted manner and separating into a first length of wire 201 and a second length of wire 202;

helically winding the first length of wire 201 around the first connection 130 to form a helical coil 210 wrapped around the first connection 130, and straightening the second length of wire 202 to the second intersection 132;

securing the first length of wire 201 and the second length of wire 202 to the first anchor wire 140 or the second anchor wire 150 at the second intersection in a knotted manner.

In some embodiments of the locking method of the present ring compression device, the locking method comprises:

securing the filamentary member to the first anchor wire at the first or second intersection in a knotted manner,

spirally winding the first length of wire (201) around the first connection, with the direction of the first length of wire (201) around the first connection being opposite to the direction of the second anchor wire around the first anchor wire.

In some embodiments of the locking method of the present ring compression device, the locking method comprises:

the first anchor wire or the second anchor wire that secures the filamentary member 200 to one end of the first connector 130 in a knotted manner;

straightening and extending the wire 200 to the other end of the first connection 130, bypassing the second intersection, and straightening and extending toward one end of the first connection 130;

winding and wrapping the wire 200 around the first connection 130 according to the above steps;

the filamentary member is straightened and extended towards the other end of the first connection and the filamentary member 200 is secured to the first or second anchor wire at the second intersection in a knotted manner.

In a second aspect of the present invention, there is provided a ring-reduction system comprising a distal anchor 400 and a proximal anchor 500, and a connecting assembly between the distal anchor 400 and the proximal anchor 500, wherein at least one of the distal anchor 400 and the proximal anchor 500 is provided with a first ring portion 110 and a second ring portion 120, and a first connecting portion 130 is provided between the first ring portion 110 and the second ring portion 120;

the ring-contracting system further comprises a first anchor wire 140 and a second anchor wire 150, wherein the first anchor wire 140 and the second anchor wire 150 are crossed and wound in a twisted manner to form the first connecting part 130;

the ring retraction system further comprises a wire 200, wherein the wire 200 secures the first connection 130 according to the locking method described above.

In some embodiments of the present ring retraction system, the first ring portion, the second ring portion, the first anchor wire and the second anchor wire are a unitary structure and are wound from a single wire.

Drawings

Fig. 1a to 1e illustrate a first embodiment of a locking method of a ring-contracting device according to the present invention;

fig. 2a to 2e illustrate a second embodiment of the locking method of the ring-contracting device of the present invention;

figures 3a to 3e illustrate a third embodiment of the locking method of the ring retractor of the invention;

fig. 4a to 4e illustrate a fourth embodiment of the locking method of the ring-contracting device of the present invention;

fig. 5a to 5e illustrate a fifth embodiment of a locking method of the ring-contracting device of the present invention;

fig. 6a to 6e illustrate a sixth embodiment of the locking method of the ring-contracting device of the present invention;

fig. 7a to 7e illustrate a seventh embodiment of a locking method of the ring-contracting device of the present invention;

figure 8 schematically illustrates a block diagram of the present invention retraction system wherein the wire locked to the first connection is not shown.

The reference numbers are as follows:

100 a constriction device, 110 a first loop portion, 120 a second loop portion, 130 a first connection portion, 140 a first anchor wire, 150 a second anchor wire;

131 a first intersection, 132 a second intersection, 141 a first through hole, 142 a second through hole;

a 200-filament, 210-helical coil, 201-first-length filament, 202-second-length filament;

400 distal anchors, 500 proximal anchors, 600 anchor wires, 610 cannula, 620 connecting rod;

Detailed Description

In order that the objects, technical solutions and advantages of the present invention will be more clearly understood, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the field of interventional medical devices, a medical device implanted in a human or animal body or a delivery system for delivering the medical device is generally referred to as a "proximal end" at a position closer to an operator and a "distal end" at a position farther from the operator, and the "proximal end" and the "distal end" of any component of the medical device or the delivery system are defined according to this principle. "axial" generally refers to the length of the medical device as it is being delivered, and "radial" generally refers to the direction of the medical device perpendicular to its "axial" direction, and defines both "axial" and "radial" directions for any component of the medical device in accordance with this principle.

FIG. 8 schematically illustrates a block diagram of the present invention retraction system wherein the wire locked to the first connection is not shown; as shown in fig. 8, a distal anchor 400 is provided at the distal end of the ring-retraction system, a proximal anchor 500 is provided at the proximal end, and the distal anchor 400 and the proximal anchor 500 are connected together by a sleeve 610 and a connecting rod 620, wherein the distal anchor 400 is provided with a first ring portion 110 and a second ring portion 120, and the proximal anchor 500 is provided with a first ring portion 110 and a second ring portion 120, and normally, a first connecting portion 130 is provided between the first ring portion 110 and the second ring portion 120.

The first ring part 110 is formed by surrounding an anchor wire 600, the anchor wire 600 surrounds the first ring part 110 and is divided into a first anchor wire 140 and a second anchor wire 150 at the intersection point, and the first connection part 130 is formed by winding the first anchor wire 140 and the second anchor wire 150 in a cross-twisted manner;

the second ring part 120 is formed by surrounding an anchor wire 600, the anchor wire 600 surrounds the second ring part 120 and is divided into a first anchor wire 140 and a second anchor wire 150 at the intersection point, and the first anchor wire 140 and the second anchor wire 150 are crossly wound between each other in a twisted shape to form a first connecting part 130, so that the first connecting part 130 connects the first ring part and the second ring part;

the anchor wires constituting the first ring part 110 and the second ring part 120 may be constituted by one wire; the anchor wires constituting the first ring part 110 and the second ring part 120 may be made of two anchor wires made of the same material;

the anchor wire 600, the first anchor wire 140 and the second anchor wire 150 should be biocompatible, such as one of PTFE, PET or PP.

The invention also provides a ring-contracting device, wherein the ring-contracting device 100 is provided with a first ring part 110 and a second ring part 120, a first connecting part 130 is arranged between the first ring part 110 and the second ring part 120, the ring-contracting device further comprises a first anchor wire 140 and a second anchor wire 150, and the first connecting part 130 is formed by the first anchor wire 140 and the second anchor wire 150 which are crossly wound and twisted.

The locking method of the ring-contracting device of the present invention is described in detail below with reference to the accompanying drawings.

Example 1

The ring-contracting device further comprises a wire member which is wound around and fixed to the first connecting part, and fig. 1a to 1e illustrate a first embodiment of the locking method of the ring-contracting device of the present invention; as shown in fig. 1a to 1e, the locking method of the ring-contracting device of the present invention comprises the steps of:

first, the thread-like member is fixed to one end of the first connecting portion by knotting, specifically, as shown in fig. 1a, the knotting method adopts a cross-knotting method including:

the wire 200 is divided into a first length 201 and a second length 202,

forming a first perforation 141 by crossing the first length of wire 201 and the second length of wire 202 to each other; and one end of the first connection portion 130 is inserted into the first insertion hole 141;

according to the direction indicated by the arrow, the first section of wire 201 and the second section of wire 202 are respectively tensioned to different directions, and the first through hole 141 gradually tightens and fixes one end of the first connecting part 130;

next, the wire 200 is helically wound around the first connection 130 and forms a helical coil 210 that is wrapped around the first connection 130, specifically, as shown in figure 1b,

the first section of wire 201 and the second section of wire 202 are simultaneously spirally wound on the first connection part 130 and form a spiral coil 210 coated on the first connection part 130;

the first connection portion may be fixed by tightly winding the wire member around the first connection portion.

Finally, the first length of wire 201 and the second length of wire 202 are tied and secured to the other end of the first connector 130, wherein the wire 200 is secured to the other end of the first connector 130 by cross-tying in the same manner as the first connector 130 is tied at one end in the previous step, as shown in fig. 1d, wherein fig. 1e is a partial enlarged view of fig. 1 d.

Example 2

As shown in fig. 2a, a first connection portion 130 is disposed between the first ring portion 110 and the second ring portion 120, the first connection portion 130 is formed by a first anchor wire 140 and a second anchor wire 150 which are twisted together in a cross-wound manner, wherein the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at one end of the first connection portion to form a first cross point 131, wherein the first anchor wire 140 is located below the second anchor wire 150, and the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at the other end of the first connection portion 130 to form a second cross point 132, wherein the second anchor wire 150 is located below the first anchor wire 140.

The ring-reducing device further comprises a wire 200, the wire 200 is wound around and fixed to the first connecting portion 130, fig. 2a to 2e illustrate a second embodiment of the locking method of the ring-reducing device of the present invention, and as shown in fig. 2a to 2e, the locking method of the ring-reducing device of the present invention comprises the following steps:

first, as shown in fig. 2a, the wire member 200 is tied and fixed to the first anchor wire 140 at the first crossing point, specifically, the tying manner includes:

the wire 200 is divided into a first length 201 and a second length 202,

forming a first perforation 141 by crossing the first length of wire 201 and the second length of wire 202 with each other; and the first anchor wire 140 is threaded into the first through hole 141;

according to the direction indicated by the arrow, the first section of the filiform element 201 and the second section of the filiform element 202 are respectively tensioned to different directions, and the first through hole 141 is gradually tightened and fixed on the first anchor wire;

next, with reference to fig. 2b, the first length of filament 201 is wound around the first connection portion 130, and a spiral coil 210 is formed to cover the first connection portion 130, wherein fig. 2c is a partially enlarged view of fig. 2 b;

finally, with reference to FIG. 2d, the second length of wire 202 is straightened and extended to the second intersection 132; the first length of filamentary member 201 and the second length of filamentary member 202 are anchored to the second anchor wire 150 at a second intersection in a cross-knot fashion similar to the one used in the previous step, wherein figure 2e is an enlarged view of figure 2 d.

In this embodiment, at both ends of the first connection portion, the wire member is fixed to the first anchor wire or the second anchor wire located below the first intersection point or the second intersection point; it should be noted that whether the first anchor wire or the second anchor wire is located below the first intersection and below the second intersection is not the only determination, and is specifically determined according to the cross winding of the first anchor wire and the second anchor wire on the first connection portion.

Example 3

Fig. 3a to 3e illustrate a third embodiment of the locking method of the ring-type contracting device according to the present invention, as shown in fig. 3a, a first connecting portion 130 is provided between the first ring portion 110 and the second ring portion 120, the first connecting portion 130 is formed by cross-winding a first anchor wire 140 and a second anchor wire 150 in a twisted shape, wherein the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at one end of the first connecting portion to form a first cross point 131, wherein the first anchor wire 140 is located below the second anchor wire 150, and the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at the other end of the first connecting portion 130 to form a second cross point 132, wherein the second anchor wire 150 is located below the first anchor wire 140;

the ring-contracting device further comprises a wire 200, the wire 200 is wound around and fixed to the first connecting portion 130, as shown in fig. 3a, and the locking method of the ring-contracting device comprises the following steps:

first, the wire 200 is tied and secured to the first anchor wire 140 at the first intersection, specifically, as shown in FIG. 3a, in a manner that includes:

dividing the wire 200 into a first wire segment 201 and a second wire segment 202;

forming a first perforation 141 by crossing the first length of wire 201 and the second length of wire 202 to each other; and the first anchor wire 140 is threaded into the first through hole 141;

according to the direction indicated by the arrow, the first section of the filiform element 201 and the second section of the filiform element 202 are respectively tensioned to different directions, and the first through hole 141 gradually tightens and fixes the first anchor wire 140;

next, referring to fig. 3b, the first section of wire 201 and the second section of wire 202 are simultaneously spirally wound on the first connection portion, and form a spiral coil 210 covering the first connection portion, and the first section of wire 201 and the second section of wire 202 are tightened to the first connection portion in the direction indicated by the arrow, wherein fig. 3c is a partially enlarged view of fig. 3 b;

finally, referring to fig. 3d, the first wire 201 and the second wire 202 are knotted and fixed to the second anchor wire 150 at the second crossing point, wherein the knotting is performed by cross-knotting as in the above-mentioned step, as shown in fig. 3d, and fig. 3e is a partially enlarged view of fig. 3 d.

Example 4

Figures 4a to 4e illustrate a fourth embodiment of the locking method of the ring retractor of the invention; as shown in fig. 3a, a first connection portion 120 is disposed between the first ring portion 110 and the second ring portion 120, and the first connection portion 130 is formed by cross-winding and twisting a first anchor wire 140 and a second anchor wire 150, wherein the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at one end of the first connection portion 130 to form a first cross point 131, wherein the first anchor wire 140 is located below the second anchor wire 150, and the first anchor wire 140 and the second anchor wire 150 are cross-connected up and down at the other end of the first connection portion 130 to form a second cross point 132, wherein the second anchor wire 150 is located below the first anchor wire 140;

the ring-contracting device comprises a wire 200, the wire 200 being wound around and fixed to the first coupling portion 130, and the specific locking method comprises the steps of,

as shown in fig. 4a, first, the filamentous member 200 is knotted and fixed to the first anchor wire 140 at the first crossing point, wherein the knotting method is implemented by folding and knotting, and the specific steps are as follows:

dividing the wire 200 into a first length 201 and a second length 202 in a doubled-over manner;

forming a second through hole 142 by the wire 200 at the folded position and the first anchor wire 140 which is positioned below the first cross point, and penetrating a first section of wire 201 and a second section of wire 202 into the second through hole 142;

by pulling on the first and second lengths of wire 201, 202, the second bore 142 is gradually tightened and secured to the first anchor wire 140.

Next, referring to fig. 4b, the first section of wire 201 and the second section of wire 202 of the wire 200 are simultaneously spirally wound on the first connection portion 130, and form a spiral coil 210 wrapping the first connection portion 130, and pull the first section of wire 201 and the second section of wire 202 tightly in the direction of the arrow, wherein fig. 4c is a partially enlarged view of fig. 4 b;

finally, referring to fig. 4d, the first and second lengths of filamentary members 201 and 202 are knotted to the second anchor wire 150 at the second crossing point, in the same way as cross knotting in example 3, and a plurality of knotting points are provided on the second anchor wire 150 to make the connection more secure, wherein fig. 4e is a partially enlarged view of fig. 4 d.

Example 5

Fig. 5a to 5e illustrate a fifth embodiment of a locking method of the ring-contracting device of the present invention; as shown in fig. 5a to 5e, the wire 200 of the ring-contracting device is fixed on the first anchor wire 140 at the first intersection 131 by folding and knotting, and then the first wire 201 and the second wire 202 of the wire 200 are simultaneously spirally wound on the first connecting portion 130 to form a spiral coil 210 wrapped around the first connecting portion, as in the same procedure of embodiment 4;

finally, it differs from example 4 in that the first and second lengths 201, 202 of wire are secured to the second anchor wire 150 in a doubled-over and knotted manner at the second intersection, as shown in FIGS. 5d and 5e, where FIG. 5e is an enlarged view of a portion of FIG. 5 d.

Example 6

Fig. 6a to 6e illustrate a sixth embodiment of the locking method of the ring-contracting device of the present invention, and as shown in fig. 6a to 6e, the wire member 200 of the ring-contracting device is wound around and fixed to the first connecting portion 130, which is different from embodiment 4 in that the first and second wire members 201 and 202 of the wire member 200 are knotted at the other end of the first connecting portion 130 in a crossing manner, and the first and second anchor wires at the other end of the first connecting portion 130 are fixed at the same time, specifically, in the same manner as in embodiment 3.

In examples 1 to 6, the wire is spirally wound around the first connection portion to form a spiral coil covering the first connection portion, wherein the pitch and length of the spiral coil are determined according to actual conditions, and the wire can be tightly wound around the first connection portion, or can be wound around the first connection portion at a large pitch to fix the first connection portion.

Example 7

Fig. 7a to 7e illustrate a seventh embodiment of a locking method of the ring-contracting device of the present invention; as shown in fig. 7a to 7e, the wire 200 of the ring-contracting device is wound around and fixed to the first connecting portion 130, and specifically, the locking method includes the steps of:

first, as shown in fig. 7a, the wire-shaped member is fixed to one end of the first connecting portion in a knotting manner, specifically, may be fixed to the first anchor wire at the lower portion of the first crossing point, wherein the knotting manner is the knotting manner in which the half is folded in the embodiment 5;

next, with reference to fig. 7b, the filiform piece 200 is straightened and extended to the other end of the first connection portion, and after bypassing the other end of the first connection portion, is straightened and continues to extend to one end of the first connection portion; after the wire 200 is wrapped around the first connection 130 in the above-described manner,

finally, referring to fig. 7d, the filamentous member 200 is fixed to the other end of the first connection portion, specifically, to the second anchor wire at the lower portion of the second intersection in a knotting manner, which is a double-fold knotting manner, as in the double-fold knotting manner in example 5.

Through the embodiment, the locking method of the ring-shaped shrinkage device provided by the invention has the advantages that the wire-shaped piece is additionally arranged on the first connecting part and is wound and coated on the first connecting part, so that the effects of preventing deformation and dislocation are achieved;

the filament is wound and coated on the first connecting part, so that a stable structure between the first ring part and the second ring part and between the first connecting part and the second connecting part is further ensured;

furthermore, the filiform piece is wound and coated on the first connecting part, so that the friction force between the ring-contracting device and the inner wall of the blood vessel in vivo is increased, and the ring-contracting device is prevented from sliding off in the blood vessel;

the endothelial attachment of the ring-contracting device can be better increased, and the stability of the device in the body is further enhanced.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A locking method of a ring-retracting device, the ring-retracting device (100) being provided with a first ring portion (110) and a second ring portion (120), and a first connecting portion (130) being provided between the first ring portion (110) and the second ring portion (120), the ring-retracting device (100) further comprising a filament (200), characterized in that the locking method comprises:

-fixing the wire (200) to one end of the first connection portion (130) in a knotted manner;

wrapping the filamentary member (200) around the first connection portion (130) to cover the first connection portion (130);

the wire member (200) is fixed to the other end of the first connecting portion (130) in a knotted manner.

2. The method of locking a ring-retracting device according to claim 1, wherein the ring-retracting device comprises a first anchor wire (140) and a second anchor wire (150), the first connecting portion (130) is formed by cross-winding and twisting the first anchor wire (140) and the second anchor wire (150), and the method comprises:

cross-connecting the first anchor wire (140) and the second anchor wire (150) at one end of the first connection (130) to form the first cross-point (131);

-cross-connecting the first anchor wire (140) and the second anchor wire (150) at the other end of the first connection (130) forming the second cross-point (132).

3. The method of claim 2, wherein said tying a knot comprises:

dividing the wire (200) into a first length of wire (201) and a second length of wire (202);

forming a first perforation (141) by crossing said first length of wire (201) and said second length of wire (202) with each other;

threading the first anchor wire (140) or the second anchor wire (150) at the first intersection point or the second intersection point into the first through hole (141), or threading the first anchor wire and the second anchor wire simultaneously into the first through hole (141);

by tensioning the first length of wire (201) and the second length of wire (202) in different directions, the first through hole (141) is gradually tightened and fixed to the first anchor wire (140) or the second anchor wire (150), or to both the first anchor wire (140) and the second anchor wire (150).

4. The method of locking a ring retractor device of claim 2 wherein said knotting comprises:

dividing the wire (200) into a first wire (201) and a second wire (202) in a double-folding manner;

forming a second through hole (142) by the filiform piece (200) at the folded position and one end of the first connecting part (130) together, and forming one end of the first connecting part (130) through the second through hole (142), or forming a second through hole (142) by the filiform piece (200) at the folded position and the first anchor wire or the second anchor wire at the first intersection or the second intersection together, and forming the first anchor wire (140) or the second anchor wire (150) through the second through hole (142),

and tightening the first section of wire-shaped element (201) and the second section of wire-shaped element (202) to gradually tighten and fix the second through hole (142) at one end of the first connecting part (130) or the first anchor wire or the second anchor wire.

5. The method of locking a ring retractor of claim 2 wherein said wrapping said wire around said first connection portion to encapsulate said first connection portion comprises:

the wire (200) is helically wound around the first connection (130) and forms a helical coil (210) that is wrapped around the first connection (130).

6. The method of locking a ring retractor device according to claim 5 wherein said method of locking comprises:

-fixing the wire (200) in a knotted manner at one end of the first connection (130) and separating it into a first (201) and a second (202) length;

the first section of wire-shaped element (201) and the second section of wire-shaped element (202) are simultaneously spirally wound on the first connecting part (130) and form a spiral coil (210) which is covered on the first connecting part (130);

the first length of wire (201) and the second length of wire (202) secure the first connection (130) in a knotted manner at the other end of the first connection (130).

7. The method of locking a ring retractor according to claim 6 wherein,

securing the filamentary member to the first anchor wire at the first or second intersection in a knotted manner,

helically winding a first length of wire (201) and a second length of wire (202) around the first connection, with the first length of wire (201) and the second length of wire (202) being wound around the first connection in a direction opposite to the direction of the second anchor wire around the first anchor wire.

8. The method of locking a ring retractor according to claim 5 wherein,

-fixing said filiform element (200) to said first anchor wire or said second anchor wire in a knotted manner at said first intersection point and separating it into a first length of filiform element (201) and a second length of filiform element (202);

helically winding the first length of wire (201) around the first connection (130) and forming a helical coil (210) that wraps around the first connection (130), the second length of wire (202) being straightened and extending to the second intersection (132);

-fixing a first length of wire (201) and a second length of wire (202) to the first anchor wire (140) or the second anchor wire (150) in a knotted manner at the second crossing point.

9. The method of locking a ring retractor device of claim 8 wherein said method of locking comprises:

securing the filamentary member to the first anchor wire at the first or second intersection in a knotted manner,

spirally winding the first length of wire (201) around the first connection, with the direction of the first length of wire (201) around the first connection being opposite to the direction of the second anchor wire around the first anchor wire.

10. A method of locking a ring retractor according to claim 2 wherein said method comprises:

-fixing the filamentary member (200) to the first or second anchor wire at one end of the first connector (130) in a knotted manner;

straightening and extending the wire (200) to the other end of the first connection (130), bypassing the second intersection, and straightening and extending toward one end of the first connection (130);

winding and wrapping the wire-shaped member (200) on the first connecting part (130) according to the steps;

the filamentary member is straightened and extended towards the other end of the first connection and the filamentary member (200) is secured to the first or second anchor wire at the second intersection in a knotted manner.

11. An annular retraction system, characterized in that it comprises a distal anchor (400) and a proximal anchor (500), and a connection assembly between the distal anchor (400) and the proximal anchor (500), wherein at least one of the distal anchor (400) and the proximal anchor (500) is provided with a first loop portion (110) and a second loop portion (120), and a first connection portion (130) is provided between the first loop portion (110) and the second loop portion (120);

the ring-contracting system further comprises a first anchor wire (140) and a second anchor wire (150), wherein the first anchor wire (140) and the second anchor wire (150) are wound in a cross-twisted manner to form the first connecting part (130);

the ring retraction system further comprises a wire (200), wherein the wire (200) secures the first connection portion (130) according to the locking method of any one of claims 1 to 9.

12. The ring retraction system according to claim 10, wherein said first ring portion, said second ring portion, said first anchor wire and said second anchor wire are of a unitary construction and are wound from a single wire.

Images