TW202120041A - Stent delivery with expansion assisting delivery wire - Google Patents

Abstract

An expandable element having a distal anchor member at a distal end, a proximal anchor member at a proximal end, and a braided intermediate portion can be delivered to a treatment site through a catheter by a delivery wire having a first, distal bump that can be translated distally to push the distal anchor distally and release the distal anchor upon exiting a distal end of the catheter, a shaped segment that can be moved to apply a radial force from within the braided intermediate portion to expand the braided intermediate portion, and a second, proximal bump that can be translated distally to push the proximal anchor distally and expel the expandable element from the catheter. The delivery wire can also have a third, recapture bump positioned between the proximal and distal bumps that can be translated proximally to retract a partially implanted expandable element into the catheter.

Description

Stent delivery member with expansion auxiliary delivery line

The present invention generally relates to devices for interventional treatment or vascular surgery for the treatment of defects in the vasculature, and more specifically to the delivery of a stent to a treatment site in a patient's body cavity and the opening of the stent at the treatment site.

Stents are inserted into blood vessels to provide an open path within the blood vessels, and they have been widely used in intravascular angioplasty treatment and other applications to occlude blood vessels. The stent may be self-expanding, or it may be expanded by radial force applied from within the stent, for example when the stent is equipped with a balloon.

Braided stents can be characterized by tubes of metal wires woven together in a plain weave technique. During delivery to the treatment site, the braided stent can travel through a catheter having a small diameter in an elongated collapsed configuration, and the braided stent can expand in diameter at the treatment site. Proper treatment with braided stents may require the stent to extend radially to the wall of the body cavity in which the stent is implanted. Although braided stents can be self-expanding, such implants generally open with a low opening force, and therefore may not be fully opened to conform to the vessel wall. After deployment, auxiliary devices such as guide wires, catheters, balloons, etc. can be used to span the braid and attempt to further expand the braided stent to improve the conformity of the vessel wall. Such as unintentional movement of the braid or incompleteness Fully open the problem of the braid. In addition, the braided implant separated from the delivery line cannot be recovered for repositioning.

An object of the present invention is to provide a system, device, and method for improving the conformity of the vascular wall of a braided stent. Generally, an expandable element has a distal anchoring part at a distal end, a proximal anchoring part at a proximal end, and a braided middle part. The expandable element can be delivered by a delivery The wire is delivered to a treatment site through a catheter. The delivery wire has: a first distal protrusion, which can be translated distally to push the distal anchor member distally and when leaving Releasing the distal anchor when a distal end of the catheter; a shaped section that can be moved to apply a radial force from within the braided middle part to expand the braided middle part; and a second A proximal protrusion, the second proximal protrusion can be translated distally to push the proximal anchor member distally and expel the expandable element from the catheter.

The delivery line may also have a third retrieving protrusion positioned at the proximal side of the distal protrusion and the distal side of the proximal protrusion, and the third retrieving protrusion can be translated toward the proximal side to move toward the proximal side. Push the proximal anchor laterally. A partially implanted expandable element having a distal portion discharged from the catheter and released from the delivery line and a proximal anchor positioned in the catheter can be moved toward the delivery line by translating the delivery line proximally The proximal anchor is pushed proximally to retract, thereby pulling the braided part and the distal anchor proximally into the catheter.

An example vascular treatment device may include a catheter, an expandable element, and a delivery line. The catheter can have a lumen, and the expandable element can be delivered through the lumen to a treatment site by the delivery line. The expandable element may have: a proximal end; a distal end; a braided part, which is located at the Between the proximal end and the distal end; a proximal anchoring component disposed at the proximal end; and a distal anchoring component disposed at the distal end.

The expandable element may have a compressed configuration sized to fit within the lumen of the catheter for delivery to the treatment site, and when the expandable element is not completely implanted at the treatment site Part of the implant configuration. In the partially implanted configuration, the proximal end of the expandable element can be sized to fit within the lumen of the catheter, and the distal end can be sized to be larger than the catheter.

The delivery line may be arranged in the lumen of the catheter and the expandable element and extend through it, etc., the expandable element having a substantially tubular shape. The delivery line may have a proximal portion, a proximal protrusion member positioned at a distal end of the proximal portion, a distal portion, and a distal protrusion positioned at a proximal end of the distal portion. The lifting part, and a formable part positioned between the proximal protrusion part and the distal protrusion. The formable portion can move from a substantially straight configuration to a curved configuration when leaving the lumen of the catheter.

The expandable element can be moved from the compressed configuration to the partially implanted configuration by a distal movement of the delivery line, which can cause the distal protruding part of the delivery line and the expandable element The distal anchoring component engages and pushes the distal anchoring component distally. The distal anchoring component can be expelled from the catheter, and the distal anchoring component can be pushed out of the catheter with the distal protruding component.

In the partially implanted configuration, the delivery line can move distally, proximally, and rotationally relative to the expandable element, and when the expandable element is in the partially implanted configuration, the delivery line The formable portion of the thread can be moved to provide a radial force from within the braided portion of the expandable element.

The formable portion may be movable into at least one of a symmetrical arc shape, an asymmetrical arc shape, or an approximately "S" shape in the curved configuration.

The expandable element can be in a compressed configuration and fully positioned within the lumen of the catheter. When the expandable element is in the compressed configuration and is fully positioned within the lumen of the catheter, the shaped portion can be in the substantially straight configuration and can be positioned on the braided portion of the expandable element In a cavity, the distal protruding component can be positioned in the cavity of the braided portion of the expandable element, and the proximal protruding component can be positioned proximal to the proximal anchoring component.

The expandable element may be in the partially implanted configuration such that the distal end of the expandable element is positioned outside the catheter, and the proximal end of the expandable element and the proximal anchor are positioned on the catheter的内内内。 In the cavity. When the expandable element is in the partially implanted configuration, the formable portion of the delivery line can be in the curved configuration and positioned outside the catheter, and a rotation of the delivery line relative to the expandable element can expand A radius of the expandable element.

An example method for implanting a stent may include the steps of: providing an implant system that includes a catheter, an expandable element, and a delivery line; and moving a first portion of the expandable element away The catheter; maintaining a second portion of the expandable element within the catheter to establish a part of the implant configuration; moving the delivery line independently of the expandable element in the partial implant configuration; and in response to the movement The conveying line expands a circumference of the expandable element. The method may further include the steps of: positioning a proximal anchor at a proximal end of the expandable element; positioning a distal anchor at a distal end of the expandable element; positioning a distal Positioning the protrusion on the delivery line; positioning a proximal protrusion on the delivery line on the proximal side of the distal protrusion; positioning the distal protrusion in a cavity of the expandable element; the proximal side The protrusion is positioned on the proximal side of the expandable element; the expandable element and at least a portion of the delivery line are positioned within a cavity of the catheter; and the distal side is anchored by pushing the delivery line distally The member and the expandable element move distally through the cavity of the catheter, thereby pushing the distal protrusion against the distal anchor; by pushing the delivery wire distally from the catheter The distal end expels the proximal anchor, thereby pushing the proximal protrusion against the proximal anchor; and expands the expelled proximal anchor.

The step of moving a first part of the expandable element away from the catheter may include the step of expelling the distal anchor from a distal end of the catheter by pushing the delivery wire distally, thereby expelling the The distal protrusion is pushed against the distal anchor; and the expelled distal anchor is expanded.

The step of moving the delivery line independently of the expandable element in the partially implanted configuration may include the step of maintaining the proximal anchor within the cavity of the catheter.

The step of expanding a circumference of the expandable element in response to the moving of the delivery line may include the step of providing a radial force from the delivery line against the expandable element from the cavity of the expandable element.

The method may further include the step of shaping the part of the delivery line from a substantially straight configuration as the part of the delivery line is moved distally from inside the cavity of the catheter to a position outside the cavity of the catheter Into a curved configuration; the shaped part of the delivery line slides against the expandable element from the cavity of the expandable element; by moving the shaped part against the expandable element, the expandable element A portion of the expandable element extends to a blood vessel wall; and the second portion of the expandable element is moved to leave the catheter and become implanted by pushing the expandable element distally with a distal movement of the delivery line.

An example system for implanting a stent or other such expandable element may include a catheter, a braided stent, and a delivery wire. The braided stent can move to a part of the implanted configuration, and is characterized by a part of the braided stent outside the catheter and a part of the braided stent inside the catheter Moreover, the delivery line can be movable independently of the braided stent, and can move when the braided stent is in a partial implant configuration to provide a force to open the braided stent.

The braided stent can be moved through the catheter in a compressed configuration and can be moved from the compressed configuration to the partially implanted configuration. The braided stent of the system may have a first expandable anchor at a distal end and a second expandable anchor at a proximal end, so that in the partially implanted configuration, the second expandable anchor An expandable anchor is attached to an implantation location on the distal side of the catheter to expand, and the second expandable anchor is compressed in the catheter.

When the braided stent is in the partially implanted configuration, the delivery line can be moved independently of the braided stent in a distal direction, a proximal direction, and a rotation direction. When the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration, the delivery wire can extend through the braided stent.

The delivery line may include a pusher protrusion, and when the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration, the pusher protrusion may be positioned on the second expandable anchor The near side of the fixed piece. The pusher protrusion may be movable to push the second expandable anchor distally, thereby pushing the braided stent distally when the braided stent is in the partially implanted configuration.

The delivery line can include a formable section that can be positioned within the braided stent when the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration. The formable section may be movable from a substantially straight configuration when the braided stent is in the compressed configuration to a curved configuration when the braided stent is in the partially implanted configuration, and when the braided stent is When in the partially implanted configuration, the formable section can be moved independently of the braided stent. When in the curved configuration, the formable section may be movable to form an arc shape, an undulating shape, or other atraumatic shape.

The delivery line may include a puller protrusion. When the braided stent is in the compressed configuration, the puller protrusion is positioned on the far side of the pusher protrusion and the formable section and also positioned on the first The proximal side of an expandable anchor.

10‧‧‧Body cavity/cavity/vasculature/vascular

100‧‧‧Implant System/Equipment

102‧‧‧Conduit

104‧‧‧Inner cavity

106‧‧‧Conveying line

108‧‧‧Proximal part

110‧‧‧Distal part

112‧‧‧Formable part/formable part

113‧‧‧Non-traumatic section/Non-traumatic shape

114‧‧‧Protrusion part/distal protrusion

144‧‧‧Protrusion

116‧‧‧Protruding parts/protrusions

120‧‧‧Retrieve the protrusion/protrusion part/protrusion

200‧‧‧Expandable element/implant/expandable anchor

201‧‧‧Poorly attached part

202‧‧‧Proximal

204‧‧‧Remote

206‧‧‧Knitting part/Middle part

208‧‧‧Anchor Parts/Anchor Parts

210‧‧‧Anchor Parts/Anchor Parts

220‧‧‧Distal coil

700‧‧‧Method

710‧‧‧Step

720‧‧‧Step

730‧‧‧Step

740‧‧‧Step

750‧‧‧step

The above aspects and further aspects of the present invention are further discussed with reference to the following specific embodiments in conjunction with the drawings. In the drawings, the same numbers indicate the same structural elements and features in the various drawings. The images and illustrations in the drawings are not necessarily drawn to scale, but the emphasis is placed on depicting the principles of the present invention. As indicated, the drawings depict one or more implementations of the device of the present invention by way of example only and not by way of limitation.

Figure 1 is a diagram depicting an implant system in a delivery configuration according to the present invention;

2A to 2H are diagrams showing the steps of the implantation system according to the present invention;

3A to 3C are diagrams depicting the shape of the conveying line part according to the present invention;

Figure 4 depicts an image of a braided implant known in the art, the braided implant has a section that is poorly attached to the blood vessel wall;

Figure 5 depicts an image of the implant system during implantation according to the present invention;

6A to 6C are images showing the steps of the implantation system according to the present invention; and

Fig. 7 is a flowchart outlining example method steps of a device or system for deploying an implant according to the present invention.

In the following detailed description, many specific details are explained through examples to provide a thorough understanding of relevant teachings. However, it should be obvious to those with ordinary knowledge in the technical field that the teachings can be implemented without such details. In other examples, in order to avoid unnecessarily obscuring the teachings, well-known methods, procedures, components, and/or circuit systems have been described at a relatively high level (without details).

As shown in FIG. 1, an example of an implant system 100 may have a catheter 102, an expandable element 200, and a delivery line 106. The catheter 102 may have a lumen 104 and the expandable element 200 may be formed in a compressed configuration that is sized to fit within the lumen 104 of the catheter 102. The expandable element 200 may have: a proximal end 202, a distal end 204, a braided portion 206 positioned between the proximal end 202 and the distal end 204, a proximal anchoring member 208 provided at the proximal end 202, and a proximal end provided at the distal end Distal anchoring component 210 at 204. The delivery wire 106 can be arranged in the lumen 104 of the catheter 102 and the expandable element 200 and extend through them, etc., and can be used to deliver the expandable element 200 to the treatment site and position the expandable element 200 at the treatment site. The delivery line 106 may have: a proximal part 108, a distal part 110, a proximal convex part 114 positioned at the distal end of the proximal part 108, and a distal convex part positioned at the proximal end of the distal part 110 114, and a formable portion 112 positioned between the proximal convex component 116 and the distal convex component 114. When the expandable element 200 is in a compressed configuration for delivery through the catheter 102, the formable portion 112 may have a substantially straight shape that is flexible to be guided through the catheter 102 to the treatment site.

The delivery line 106 may further include a retrieval protrusion 120 positioned between the distal protrusion 114 and the proximal protrusion 116. The delivery, positioning, and retraction of an expandable element such as a stent in a body cavity using a delivery line having a distal protrusion component, a proximal protrusion component, and a retrieval protrusion is another patent application filed at the same time as this application Theme of.

One or all of the raised features 114, 116, 120 may include a radiopaque material to allow the location of the projections 144, 116, 120 to be easily seen during the implantation procedure.

The one or more anchoring members 208 and 210 may be protrusions that extend substantially parallel to the longitudinal axis of the expandable element 200 and extend downward toward the longitudinal axis of the expandable element 200. During deployment of the expandable element 200 within the body cavity 10, the anchoring members 208, 210 may act as radiopaque markers for improved visualization. The anchoring members 208, 210 can be used to align the expandable element 200 so that it can be pushed and pulled through the catheter 102 without damage or deformation. The anchoring members 208, 210 can also be used to move the braided portion 206 to the expanded/implanted configuration. Examples of anchoring components 208, 210 can be found in U.S. Serial No. 15/299,918, which is incorporated herein by reference in its entirety.

Generally speaking, the expandable element 200 can have a compressed configuration and an expanded implant configuration. When in the compressed configuration, the expandable element 200 can be sized to fit within the lumen 104 of the catheter 102. In some instances, the catheter 102 can help confine the expandable element 200 so that it does not expand when contained within the catheter 102. Other elements can be used to confine the expandable element 200, as known in the art.

The expandable element 200 may also have a partially implanted configuration, in which the proximal end 202 is sized to fit within the lumen 104 of the catheter 102 and the distal end 204 is sized to be larger than the catheter 102.

2A to 2H are diagrams showing steps for implanting the system. When the expandable element 200 is in the collapsed configuration, the distal protrusion 114 can be positioned within the expandable element 200 such that distal movement of the delivery line 106 can cause the distal protrusion 114 to abut the distal anchor 210 Push, and pull the expandable anchor 200 through the catheter 102 to the treatment site. The distal protrusion member 114 can push the distal anchor member 210 to expel the distal anchor member 210 from the catheter 102, thereby moving the expandable element 200 to a partially implanted configuration, as shown in Figure 2A.

Upon exiting the catheter, the formable portion 112 of the delivery wire 106 can move from a straight shape to a curved shape, as shown in FIGS. 2A to 2H. When the expandable element is in a partially implanted configuration, the formable portion 112 can provide radial force from within the braided portion 206 of the expandable element 200.

In an example, the entire conveyor line 106 including the formable portion 112 may be made of stainless steel. In other examples, the conveying line 106 and/or the formable portion 112 may be made of a memory shape material including a memory shape metal, such as Nitinol or a polymer memory shape material. Upon exiting the catheter 102, the formable portion 112 can move from a substantially straight flexible configuration when in the catheter 102 to a curved configuration after contact with body fluids. Additionally or alternatively, the formable portion 112 may be bent to conform to the shape of the curved body cavity so that distal and proximal movement of the expandable element 200, the delivery line 106, and the catheter 102 may cause the delivery line 106 to move from The braided portion 206 provides radial force.

As shown in FIG. 2A, during treatment, because the self-expanding braided implant can provide low radial force during implantation, at least some of the intermediate portion 206 of the expandable element 200 may not completely conform to the body cavity 10 wall.

As shown in FIG. 2B, the delivery line 106 may be rotatable relative to the expandable element 200, and the rotation may cause the shaped portion 112 of the delivery line 106 to provide a force against the expandable element 200, while pushing the portion of the expandable element to It conforms to the wall of the body cavity 10.

As shown in FIG. 2C, the delivery line 106 can be movable relative to the expandable element 200 in the distal direction and the proximal direction without interfering with the placement of the partially implanted expandable element 200. Distal movement and proximal movement can also cause the shaped portion 112 of the delivery line 106 to move against the expandable element 200, thereby causing the portion of the expandable element 200 to better conform to the wall of the body cavity 10.

As shown in FIG. 2D, the delivery line 106 may be rotated subsequently to improve the conformability of the expandable element 200 to the wall of the body cavity 10.

As shown in FIG. 2E, when the expandable element 200 is in the partially implanted configuration, the delivery wire 106 can be moved further distally to engage the proximal pusher protrusion 116 with the proximal anchor 208.

As shown in FIG. 2F, further distal movement of the delivery wire 106 can expel the proximal anchor 208 from the catheter 102. Once the proximal anchor 208 is expelled from the catheter 102, the proximal anchor can expand to engage the wall of the body cavity 10. Once the proximal anchor 208 is expanded, the expandable element 200 can be detached from the delivery line 106. As shown in FIG. 2F, the portion of the expandable element 200 may remain incompletely conformable to the wall of the body cavity 10.

As shown in FIG. 2G, the delivery wire 106 can then be moved proximally to side the part of the braid, resulting in a better conformity to the wall of the body cavity 10.

As shown in FIG. 2H, the conveying wire 106 can then be rotated, and the shaped portion 112 can slide against the portion of the braid, resulting in a better conformity to the wall of the body cavity 10.

In the expanded configuration, as shown in FIG. 2H, the expandable element 200 can be expanded to conform to the size of the body cavity 10 of the patient. The expanded size of the expandable element 200 allows the device 100 to pass therethrough, previously moved to a second position or withdrawn. The expandable element 200 can be at least partially expandable under its inherent properties, at least based on its original shape and the nature of the material constituting the element, and further expanded by the movement of the delivery line 106 as described herein. When at its expanded diameter, an example of the expandable element 200 may be one of a pear shape, an oval shape, and an elliptical shape. The configuration of the expandable element 200 is known to those having ordinary knowledge in the art. Other embodiments of the expandable element 200 of the present disclosure are envisaged and can also be observed in US Patent Publication No. 2016/0058524, which is incorporated herein by reference in its entirety.

3A to 3C illustrate some potential shapes that the formable portion 112 of the delivery wire 106 can have when the expandable element is in a partially implanted configuration. Some examples are arcs, bends, "S" shapes, and "C" shapes. In one example, the formable portion 112 presents an atraumatic section 113 to contact the braided plant Both the entry 200 and possibly the wall of the body cavity 10. The atraumatic section 113 minimizes damage to one or both of the implant 200 and the cavity 10. Another example of the atraumatic section 113 is to minimize the amount of radial force applied once the formable portion 112 is deformed from a straight shape to a curved shape. Too much force (even applied by the atraumatic shape 113) can still damage the implant/cavity. Too little force or shape and the implant will not open to its full potential shape.

Figure 4 depicts a braided implant known in the art, the braided implant having a section that is poorly attached to the blood vessel wall. An object of the present invention is to provide a treatment device, system, and method for improving the conformity of the implant to the blood vessel wall.

Figure 5 depicts a partially implanted expandable element that is a braided implant 200 having a distal end 204 positioned outside the catheter 102 and a delivery wire 106 positioned inside the implant 200, The delivery line 106 has a distal coil 220 positioned on the distal side of the implant 200, a distal protrusion 114 positioned within the implant, and a retrieval positioned proximal to the distal protrusion 114 within the implant 200 The protrusion 120 and the proximal protrusion 116 positioned proximal to the implant 200 in the catheter 102. The implant 200 as depicted in FIG. 5 has a poorly attached portion 201 that does not extend to conform to the vasculature 10.

6A to 6C illustrate the movement of the conveyor line 106 in the system shown in FIG. 5 to provide outward radial force from the poorly attached part 201 and other parts of the implant 200 that are not completely attached to the wall. To move these parts closer to the wall of the blood vessel 10. From FIG. 6A to FIG. 6B, the delivery line 106 may be moved distally to extend against the outer curvature of the implant 200 and/or the proximal protrusion 116 may provide a proximal anchor against the implant 200 The driving force of a fixed piece (not shown). From FIG. 6B to FIG. 6C, the delivery wire 106 can be pulled proximally to press against the inner curvature of the implant 200 and/or retract at least a part of the implant 200 into the catheter 102.

In the example shown in FIGS. 6A to 6C, the shaped portion 112 of the delivery line 106 may be flexible to bend into the shape of the curved vasculature 10, and does not need to be reshaped because it is made of a memory shape material . The formable portion 112 can be individually bent to conform to the shape of the curved body cavity so that the distal and proximal movement of the expandable element 200, the delivery wire 106, and the catheter 102 can cause the delivery wire to move to provide from within the braided portion 206 Radial force. In this example, the non-preformed formable portion 112 may be bent based on bringing the delivery wire 106 out of the curve of the vasculature through the inside of the curve and the braided portion 206 to be implanted.

Figure 7 is a flowchart outlining example method steps of a device or system for deploying an implant. These method steps can be implemented by the example means described herein or by any means known to those with ordinary knowledge in the art.

Referring to the method 700 shown in FIG. 7, in step 710, an implant delivery system having a catheter, an expandable element, and a delivery line can be provided. The implanted delivery system can be any of the delivery systems described herein, which has any combination of the features described herein and any features known to those of ordinary skill in the art. In step 720, the first portion of the expandable element can be moved to exit the catheter. In step 730, the second portion of the expandable element can be maintained within the catheter to establish a partial implant configuration. In step 740, in the partially implanted configuration, the delivery line can be moved independently of the expandable element. In step 750, the circumference of the expandable element can be enlarged in response to the movement of the conveying line in step 740.

The description contained herein is an example of an embodiment of the invention and is not intended to limit the scope of the invention in any way. As described herein, the present invention envisions many variations and modifications of the implant system and its method of use, including various shapes, various materials, various treatments, and various stent geometries of the formable portion of the delivery line. These modifications will be obvious to those with ordinary knowledge in the technical field to which the present invention belongs, and are intended to be within the scope of the following patent applications.

10‧‧‧Body cavity/cavity/vasculature/vascular

100‧‧‧Implant System/Equipment

102‧‧‧Conduit

104‧‧‧Inner cavity

106‧‧‧Conveying line

108‧‧‧Proximal part

110‧‧‧Distal part

112‧‧‧Formable part/formable part

114‧‧‧Protrusion part/distal protrusion

116‧‧‧Protruding parts/protrusions

120‧‧‧Retrieve the protrusion/protrusion part/protrusion

200‧‧‧Expandable element/implant/expandable anchor

202‧‧‧Proximal

204‧‧‧Remote

206‧‧‧Knitting part/Middle part

208‧‧‧Anchor Parts/Anchor Parts

210‧‧‧Anchor Parts/Anchor Parts

220‧‧‧Distal coil

Claims (18)

A vascular treatment device, which comprises: A catheter, which includes an inner cavity; An expandable element, which includes: A near end A remote A braided part, which is located between the proximal end and the distal end; A proximal anchoring component, which is arranged at the proximal end; A distal anchoring component, which is arranged at the distal end; A compressed configuration that is sized to fit within the lumen of the catheter; and A part of the implant configuration, wherein the proximal end is sized to fit within the lumen of the catheter, And the distal end is sized to be larger than the catheter; and A delivery line, which is disposed in the lumen and the expandable element and extends through the lumen and the expandable element, the delivery line comprising: A proximal part A proximal protruding part, which is positioned at a distal end of the proximal part; A distal part A distal protruding part, which is positioned at a proximal end of the distal part; and A formable portion positioned between the proximal protrusion and the distal protrusion, the formable portion being movable from a substantially straight configuration to a curved shape when leaving the lumen of the catheter Configuration, Wherein the expandable element can be moved from the compressed configuration to the partially implanted configuration by a distal movement of the delivery line, so that the distal protruding part of the delivery line and the distal end of the expandable element The lateral anchoring member engages and pushes the distal anchoring member distally, thereby expelling the distal anchoring member from the catheter, Wherein the delivery line can move distally, proximally, and rotationally relative to the expandable element in the partially implanted configuration, and Wherein when the expandable element is in the partially implanted configuration, the shapeable portion of the delivery line can move to provide a radial force from the braided portion of the expandable element. The device according to claim 1, wherein the formable portion is movable in the curved configuration into at least one of a symmetrical arc shape, an asymmetrical arc shape, an approximately "S" shape, and an atraumatic shape One. The device according to claim 1, wherein: The expandable element is in the compressed configuration and completely positioned within the lumen of the catheter, The shaped portion is in the substantially straight configuration and is positioned within a cavity of the braided portion of the expandable element, The distal protrusion member is positioned within the cavity of the braided portion of the expandable element, and The proximal protruding component is positioned on the proximal side of the proximal anchoring component. The device according to claim 1, wherein: The expandable element is in the partially implanted configuration, The distal end of the expandable element is positioned outside the catheter, The proximal end of the expandable element and the proximal anchor are positioned in the lumen of the catheter, and The formable portion of the delivery line is in the curved configuration and is positioned outside the catheter. The apparatus according to claim 4, wherein the transfer line expands a radius of the expandable element relative to a rotation of the expandable element. A method for implanting a stent, which comprises: Provide an implant system, the implant system includes a catheter, an expandable element, and a delivery line; Moving a first part of the expandable element to leave the catheter; Maintaining a second part of the expandable element in the catheter to establish a part of the implant configuration; Move the delivery line independently of the expandable element in the partially implanted configuration; and In response to moving the conveying line, a circumference of the expandable element is enlarged. The method according to claim 6, which further includes the following steps: Positioning a proximal anchor at a proximal end of the expandable element; Positioning a distal anchor at a distal end of the expandable element; Position a distal protrusion on the conveying line; Positioning a proximal protrusion on the conveying line on the proximal side of the distal protrusion; Positioning the distal protrusion in a cavity of the expandable element; Positioning the proximal protrusion on the proximal side of the expandable element; Positioning the expandable element and at least a part of the delivery line in a cavity of the catheter; The distal anchor and the expandable element are moved distally through the cavity of the catheter by pushing the delivery wire distally, so that the distal protrusion abuts the distal anchor promote; Expelling the proximal anchor from the distal end of the catheter by pushing the delivery wire distally, thereby pushing the proximal protrusion against the proximal anchor; and Expand this proximal anchor that is expelled, The step of moving a first part of the expandable element to leave the catheter includes the following steps: Expelling the distal anchor from a distal end of the catheter by pushing the delivery wire distally, thereby pushing the distal protrusion against the distal anchor; and Expand this distal anchor that is expelled, Wherein the step of moving the delivery line independently of the expandable element in the partially implanted configuration further comprises the step of maintaining the proximal anchor in the cavity of the catheter, and The step of expanding a circumference of the expandable element in response to moving the delivery line includes the step of providing a radial force from the delivery line against the expandable element from the cavity of the expandable element. The method according to claim 6, further comprising the step of: when a part of the delivery line is moved distally from inside the cavity of the catheter to a position outside the cavity of the catheter, removing the part from a substantial The straight configuration is shaped into a curved configuration. The method according to claim 8, further comprising the step of: sliding the part of the delivery line formed from the cavity of the expandable element against the expandable element. The method according to claim 8, further comprising the step of extending a part of the expandable element to a blood vessel wall by moving the formed part against the expandable element. The method of claim 6, further comprising the steps of: moving the second part of the expandable element to leave the catheter by pushing the expandable element distally with a distal movement of the delivery line, and Become implanted. A system for implanting a stent, which includes: A catheter A braided stent that can move to a part of the implant configuration, wherein a part of the braided stent is outside the catheter, and a part of the braided stent is inside the catheter; A conveying line that can move independently of the braided stent and can move when the braided stent is in a partially implanted configuration to provide a force to open the braided stent. The system described in claim 12, The braided stent includes a first expandable anchor at a distal end and a second expandable anchor at a proximal end, The braided stent can move through the catheter when in a compressed configuration, The braided stent can be moved from the compressed configuration to the partially implanted configuration, so that the first expandable anchor is attached to an implanted position on the distal side of the catheter to expand, and the second expandable anchor Is compressed in the catheter, The conveyor line includes a pusher protrusion and a formable section, Wherein when the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration, the delivery line extends through the braided stent, Wherein when the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration, the pusher protrusion is positioned on the proximal side of the second expandable anchor, Wherein when the braided stent is in the compressed configuration and when the braided stent is in the partially implanted configuration, the formable section is positioned in the braided stent, Wherein the formable section can move from a substantially straight configuration when the braided stent is in the compressed configuration to a curved configuration when the braided stent is in the partially implanted configuration, and When the braided stent is in the partially implanted configuration, the formable section can move independently of the braided stent. The system of claim 13, wherein the pusher protrusion is movable to push the second expandable anchor distally, thereby pushing the braided distally when the braided stent is in the partially implanted configuration Bracket. The system according to claim 13, wherein the conveying line further includes a puller protrusion, and when the braided stent is in the compressed configuration, the puller protrusion is positioned on the pusher protrusion and the formable area The distal side of the segment is positioned on the proximal side of the first expandable anchor. The system according to claim 12, wherein the formable section can move into an arc shape when in the curved configuration. The system according to claim 13, wherein the formable section can move into a wavy shape when in the curved configuration. The system according to claim 12, wherein when the braided stent is in the partially implanted configuration, the delivery line can move in a distal direction, a proximal direction, and a rotation direction independently of the braided stent.

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