KR20160005673A - Anchoring Guidewire and Methods for Use - Google Patents

Abstract

A fixed guide wire and a method for its use are disclosed, wherein the fixed guide wire includes (a) an outer core, (b) a fixed basket, (c) an adjustable tip, and (d) an actuator core. The outer core, the stationary basket and the adjustable tip are axially aligned with one another. The actuator core may also be movably disposed within the outer core and the stationary basket and may be coupled to the adjustable tip.

Description

Anchorage Guidewire and Methods for Use < RTI ID = 0.0 >

Related application

This application is a full filed of U.S. Provisional Application No. 61 / 809,134 entitled " Anchoring Guidewire ", filed April 5, 2013, which claims priority to and is incorporated by reference in its entirety do.

The guide wire may be used to guide the medical device to the desired target vessel during surgery. Conventional guidewire methods and devices may include adjustable guidewires that are not fixed in any way. When complex dissection is involved, the rigid device may be actuated to straighten the guide wire as it advances in the curved portion of the guide wire, and the adjustable guide wire may often escape from the target vessel, Which makes it difficult to use an adjustable guide wire as a coaxial rail.

The present invention is directed to a method and apparatus that can include a fixed basket for securing a guide wire to a vasculature structure prior to placing a graft. This feature can improve the convenience of placing stent grafts in branch vessels, increase the speed and success of complex cases, and reduce the likelihood of complications. Securing the guide wire to the vasculature of the subject can have a stabilizing effect on the tip of the catheter and can provide greater stability and confidence for the operator. Once the stationary basket is positioned, the guide wire can be secured in place to protect the basket and preferably allow blood to continue to flow through the basket and downstream. Once fixed, the guidewire may be secured to a cavity for improved delivery of a therapeutic device, such as a bare metal stent, a covered stent, and other over-the-wire devices. Can be used as coaxial rails.

Accordingly, in a first aspect, the present invention provides a fixed guide wire comprising (a) an outer core, (b) a fixed basket, (c) an adjustable tip, and (d) an actuator core, And the adjustable tip are axially aligned with each other, the actuator core being movably disposed within the outer core and the stationary basket, and the actuator core being coupled to the adjustable tip.

In one embodiment, the present invention is directed to a method of forming a plurality of strips, wherein the fixed basket comprises a plurality of strips formed in an outer core adjacent the adjustable tip, the strips being substantially straight in the first neutral state and radially flexed in the second compressed state ≪ / RTI >

In yet another embodiment, the present invention is directed to a method of manufacturing a wire, wherein the fixed basket comprises a plurality of wires each having a proximal end and a distal end, each proximal end of the plurality of wires being attached to a first holder, Is attached to the second holder and can provide a plurality of wires that are substantially straight in the first neutral state and flexed radially in the second compressed state.

In a second aspect, the present invention also provides a method for disposing a fixed guide wire, comprising the steps of: (a) introducing a fixed guide wire according to the first aspect of the present invention into an arterial configuration; (b) Placing the core in a tensioned state and advancing the adjustable tip toward the outer core, and (c) moving the fixed basket from the first neutral state to the second compressed state.

1A is a side view of a fixed guide wire in a neutral state according to an embodiment of the present invention.
1B is a side view of a fixed guide wire in a compressed state according to an embodiment of the present invention.
2A is a side view of a locking device in a neutral state in accordance with one embodiment of the present invention.
Figure 2B is a side view of a locking device in a compressed state in accordance with an embodiment of the present invention.
2C is a side view of a locking device in a locked state in accordance with an embodiment of the present invention.
3 is a flow chart illustrating functions that may be performed in accordance with an exemplary embodiment of the disclosed method.

Exemplary methods and systems are disclosed herein. It is to be understood that the word "exemplary" is used herein to mean "serving as an example, instance, or illustration. &Quot; "Illustratively" all embodiments or features disclosed herein are not necessarily to be construed as preferred or advantageous over other embodiments or features. The exemplary embodiments disclosed herein are not intended to be limiting. It will be readily understood that the particular embodiments of the disclosed systems and methods can be arranged and combined in a wide variety of configurations contemplated herein.

In addition, the particular arrangements shown in the drawings should not be construed as limiting. It is to be understood that other embodiments may include substantially all of the components shown in the figures. Further, the exemplary embodiments may include components not shown in the drawings.

1A to 1B, the present invention is directed to a golf club head comprising: (a) an outer core 102; (b) a fixed basket 104; (c) an adjustable tip 106; and (d) ) Actuator core 108, as shown in FIG. Outer core 102, stationary basket 104 and adjustable tip 106 may be axially aligned with one another. In addition, the actuator core 108 may be movably disposed within the outer core 102 and the stationary basket 104 and may be coupled to the adjustable tip 106. The overall length of the fixed guide wire 100 may range from about 120 mm to about 10,000 mm.

"Approximately " as used herein in reference to measurement and calculation means +/- 5%.

The outer core 102 may be made of, for example, polyurethane, tungsten, gold, nitinol, platinum, stainless steel, polyurethane, nickel, stainless steel with tungsten or any other suitable material. The outer core 102 may have a diameter in the range of about 0.25 mm to about 1 mm, and preferably in the range of about 0.254 mm to about 0.9652 mm. In some embodiments, a plurality of radiopaque markers may be disposed on outer core 102. The plurality of radiopaque markers are spaced apart by 1 cm, for example, arranged to move in a proximal direction in a range of up to about 20 mm along the outer core 102, starting at the proximal end of the fixed basket 104 .

In one embodiment, the fixed basket 104 may include a plurality of strips formed in the outer core 102 adjacent the adjustable tip 106. These strips may be formed by laser cutting the outer core 102. The strip is substantially straight in the first neutral state (shown in FIG. IA) and can be bent radially in the second compressed state (shown in FIG. 1B).

In yet another embodiment, the stationary basket 104 may comprise a plurality of wires each having a proximal end and a distal end. The plurality of wires can be made of, for example, nitinol, titanium, titanium alloys, various plastics or other suitable materials. In one embodiment, the proximal end of each of the plurality of wires may be attached to the first holder 110 and the distal end of each of the plurality of wires may be attached to the second holder 112. [ In an alternative embodiment, multiple wires may be coupled directly to the outer core 102 and to the adjustable tip 106. The plurality of wires are substantially straight in the first neutral state (shown in Figure 1A) and are flexed radially in the second compressed state when the first holder 110 and the second holder 112 are moved close to each other (Shown in FIG. 1B). The stationary basket 104 may have a diameter in the range of about 3 mm to about 70 mm in the second compressed state. The first holder 110 may be in mechanical communication with the outer core 102 and the second holder 112 may be in mechanical communication with the adjustable tip 106. In some embodiments, the outer holder 102 may be physically coupled to the first holder 110 and the adjustable tip 106 may be physically coupled to the second holder 112 as well.

The actuator core 108 is movably disposed within the outer core 102 and extends through the stationary basket 104 so that the actuator core 108 is coupled to the adjustable tip 106 and / . In operation, the actuator core 108 may cause the stationary basket 104 to move between the first neutral state and the second compressed state. FIG. 1A shows the first neutral state of the fixed guide wire 100, and FIG. 1B shows the second compressed state of the fixed guide wire 100. FIG. In one embodiment, the actuator core 108 may be positioned to cause the adjustable tip 106 to advance toward the outer core 102 until the stationary basket 104 is in the second compressed state. In another embodiment, the actuator core 108 may be positioned to cause the second holder 112 to advance toward the first holder 110 until the stationary basket 104 is in the second compressed state.

2A-2C illustrate an exemplary locking device in accordance with an embodiment of the present invention. Specifically, the actuator core 108 may be in physical communication with a releasable locking device to maintain the stationary basket 104 in a second compressed state. As shown in FIG. 2A, the releasable locking device may include raised elements or protrusions 114 coupled to the actuator core 108. In the first neutral state, the lifting element or protrusion 114 may be configured to fit into the slot 116 in the outer core 102. As shown in Figures 2B-2C, when the fixed guide wire 100 moves from the first neutral state to the second compressed state, the actuator core 108 and thus the raised element 114 are connected to the outer core 102 And then interfering with the outer core 102 (shown in Figure 2C) prevents the raised element 114 from moving over the circle. The end result thereof is that the actuator core 108 can be secured in place to maintain the stationary basket 104 in the second compressed state. When the plurality of wires 105 of the fixed basket 104 are in the second compression position, the wire 105 is spring loaded and tries to return to the first neutral position. As such, when the tension in the actuator core 108 is removed, the second holder 112 is positioned to advance the adjustable tip 106 away from the outer core 102 until a first neutral state is achieved.

In one embodiment, the actuator core 108 may have a rigidity that can push and pull the adjustable tip 106. Here, the spring force of the actuator core 108 and / or the plurality of wires may cause the wire-securing basket 104 to return to the first neutral state.

The adjustable tip 106 may have various stiffnesses and thicknesses to handle various use cases. For example, the adjustable tip 106 may be thinner and / or less rigid when the fixed guide wire 100 is required to make a sharp turn to advance to the target vessel. In another example, the adjustable tip 106 may be thicker and / or harder if the target vessel is less soft and has a more direct path to the target vessel. Adjustable tip 106 may have a length in the range of about 5 mm to about 200 mm.

3 is a simplified flow diagram illustrating a method according to an exemplary embodiment. Although the blocks are shown sequentially, these blocks may also be performed in parallel and / or in a different order than that described herein. In addition, the various blocks may be combined into fewer blocks, may be further divided into blocks, and / or may be removed based on the desired implementation.

At block 302, the method includes introducing a fixed guide wire according to any of the above embodiments into any suitable arterial configuration including a synthetic lumen. At block 304, the method includes placing the actuator core in a tensioned state and advancing the adjustable tip toward the outer core. At block 306, the method includes moving the fixed basket from a first neutral state to a second compressed state. At block 308, the method includes securing the actuator core in place to hold the stationary basket in a second compressed state. The actuator core may be secured in place using the exemplary locking device described above in connection with Figures 2A-2C or through some other locking device. In another embodiment, the method may further comprise releasing the actuator core. In yet another embodiment, the method may further comprise removing tension from the actuator core and moving the securing basket from the second compression state to the first neutral state.

While various aspects and embodiments are disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. All embodiments within and among the various aspects of the invention may be combined unless the context clearly dictates otherwise. The various aspects and embodiments disclosed herein are for the purpose of illustration and not of limitation, the true scope and spirit being indicated by the following claims.

Claims (20)

Outer core;
Fixed basket;
Adjustable tip; And
In the fixed guide wire including the actuator core,
Characterized in that the outer core, the stationary basket and the adjustable tip are axially aligned with one another, the actuator core being movably disposed within an outer core and a stationary basket, the actuator core being coupled to the adjustable tip Guide wire.
The method according to claim 1,
Wherein the fixed basket comprises a plurality of strips formed in an outer core adjacent the adjustable tip and wherein the plurality of strips are substantially straight in a first neutral state and flexed in a radial direction in a second compressed state, .
The method according to claim 1,
Wherein the fixed basket comprises a plurality of wires each having a proximal end and a distal end, the proximal end of each of the plurality of wires being attached to a first holder and the distal end of each of the plurality of wires being attached to a second holder Wherein the plurality of wires are substantially straight in the first neutral state and flexed radially in the second compressed state.
The method of claim 3,
Wherein the first holder is in mechanical communication with the outer core and the second holder is in mechanical communication with the adjustable tip.
5. The method according to any one of claims 2 to 4,
Wherein the actuator core is arranged to cause the fixed basket to move between a first neutral state and a second compressed state.
6. The method according to any one of claims 2 to 5,
Wherein the actuator core is disposed to advance the adjustable tip toward the outer core until the fastening basket is in the second compressed state.
7. The method according to any one of claims 3 to 6,
Wherein the actuator core is arranged to cause the second holder to advance toward the first holder until the stationary basket is in the second compressed state.
8. The method according to any one of claims 2 to 7,
Wherein the actuator core is in mechanical communication with a releasable locking device configured to maintain the securing basket in a second compressed state.
9. The method according to any one of claims 3 to 8,
And in the second compressed state, the second holder is arranged to advance the adjustable tip away from the outer core until a first neutral state is achieved.
10. The method according to any one of claims 1 to 9,
Wherein the actuator core has a rigidity to push and pull the adjustable tip.
11. The method according to any one of claims 2 to 10,
Wherein the fixed basket has a diameter in the range of about 3 mm to about 70 mm in the second compressed state.
12. The method according to any one of claims 1 to 11,
Wherein the adjustable tip has a length ranging from about 5 mm to about 200 mm.
13. The method according to any one of claims 1 to 12,
Wherein the outer core has a diameter ranging from about 0.254 mm to about 0.9652 mm.
14. The method according to any one of claims 1 to 13,
Wherein the length of the fixed guide wire ranges from about 120 mm to about 10,000 mm.
15. The method according to any one of claims 1 to 14,
Wherein a plurality of radiopaque markers are disposed on the outer core.
16. The method according to any one of claims 1 to 15,
Wherein the plurality of radiopaque markers are spaced apart by 1 cm and are arranged to move in a proximal direction in a range of up to about 20 mm along the outer core beginning at the proximal end of the fixation basket.
A method for disposing a fixed guide wire, the method comprising:
Introducing a fixed guide wire according to any one of claims 1 to 16 into an arterial configuration;
Placing the actuator core in a tensioned state and advancing the adjustable tip toward the outer core; And
Moving the fixed basket from a first neutral state to a second compressed state.
18. The method of claim 17,
Removing tension from the actuator core; And
Further comprising moving the stationary basket from a second compressed state to a first neutral state.
The method according to claim 17 or 18,
Further comprising fixing the actuator core in place to hold the stationary basket in a second compressed state.
20. The method of claim 19,
≪ / RTI > further comprising releasing the actuator core.

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