Twisting machine implant disengagement mechanism

Abstract

The invention discloses an endovascular implant detachment mechanism. The endovascular implant detachment mechanism may include an endovascular implant, a connector, a push wire, and one or more lock wires. The connector may be attached to the clamping end of the implant and may include an aperture at the second end. The connector may include a generally circular lumen distal to the aperture. The push wire may have a distal end including one or more slotted openings and configured to fit into the aperture in a first orientation. The one or more lock wires may be configured to fit into the aperture when the distal end of the push wire is in a second orientation. Axial rotation of the push wire may cause a distal end of the push wire to move from the first orientation to the second orientation and secure the push wire to the implant.

Description

Technical Field

[0001] The present invention relates generally to medical devices and, more particularly, to embolic implant detachment mechanisms for aneurysm treatment. Background Art

[0002] Intracranial aneurysms can be complex and difficult to treat due to their proximity to critical brain tissue. Recently, tubular braided implants have been introduced that have the potential to easily, accurately, and safely treat aneurysms or other arteriovenous malformations in parent vessels without obstructing blood flow into perforating vessels that are in communication with the parent vessel. Implant devices used to treat aneurysms must be delivered through long, small, tortuous vessels, and positioning must be precisely controlled to ensure that the aneurysm fills without causing additional blockages or platelet aggregation in nearby vessels. Therefore, there is a need for a delivery and disengagement mechanism that provides a connection point between a tubular braided implant and a delivery catheter that has the ability to deliver, position, manipulate, and then release the implant. Summary of the invention

[0003] The object of the present invention is to provide a system, device and method that meet the above needs. Generally speaking, an object of the present invention is to provide an intravascular implant detachment mechanism. The detachment mechanism may include an intravascular implant, which includes a clamping end. The detachment mechanism may include a connector, which is attached to the clamping end of the implant at a first end and includes an orifice at a second end. The connector portion of the detachment mechanism may include a generally circular cavity distal to the orifice. The detachment mechanism may include a push wire with a distal end. The distal end may include one or more slotted openings. The distal end may be configured to be assembled into the orifice in a first orientation (e.g., detached) relative to the orifice. The detachment mechanism may include one or more locking wires, which are configured to be assembled into the orifice when the distal end of the push wire is in a second orientation. The axial rotation of the push wire may cause the distal end of the push wire to move from the first orientation to the second orientation (e.g., attached), which may therefore fix the push wire to the intravascular implant.

[0004] In some examples, the connector can be configured to disengage from the push wire in response to removal of the one or more lock wires from the aperture and axial rotation of the distal end of the push wire from the second orientation to the first orientation.

[0005] In some examples, the disengagement mechanism can include a spring integrated within a generally circular cavity. The spring can be configured to rotate the distal end of the push wire from the second orientation to the first orientation in response to removal of the one or more locking wires.

[0006] In some examples, the one or more locking wires can be configured to prevent the spring from rotating the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the aperture.

[0007] In some examples, the connector can further include an angled inner surface configured to facilitate axial rotation of the distal end of the push wire from the second orientation to the first orientation in response to pulling the push wire in a proximal direction.

[0008] In some examples, the one or more locking wires may include two locking wires.

[0009] In some examples, the one or more locking wires can be effective to prevent axial rotation of the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the aperture of the connector.

[0010] In some examples, the detachment mechanism can further include a microcatheter sized to deliver the intravascular implant to the treatment site when the intravascular implant is in the non-expanded configuration.

[0011] In some examples, the push wire can be configured to push the intravascular implant through the microcatheter and to the treatment site.

[0012] In some cases, an intravascular implant can be configured to expand to an expanded configuration to occlude a substantially spherical lumen.

[0013] On the other hand, an intravascular implant detachment mechanism is disclosed. The detachment mechanism may include an intravascular implant, the intravascular implant including a clamping end. The detachment mechanism may include a connector attached to the clamping end at a first end and including an orifice at a second end. The detachment mechanism may include a generally circular cavity distal to the orifice. The detachment mechanism may include a push wire having a distal end. The distal end may include one or more slotted openings. The distal end may be configured to fit into the orifice in a first orientation (e.g., detached) relative to the orifice. The detachment mechanism may include one or more locking wires, the one or more locking wires being configured to fit into the orifice when the distal end of the push wire is in a second orientation. The detachment mechanism may include a spring disposed in a generally circular cavity. The spring may be configured to rotate the distal end of the push wire from the second orientation to the first orientation in response to the removal of the one or more locking wires. Axial rotation of the push wire may cause the distal end of the push wire to move from the first orientation to the second orientation (e.g., attached), which may thus fix the push wire to the intravascular implant.

[0014] In some examples, the connector is configured to disengage from the push wire in response to removal of the one or more locking wires from the aperture and axial rotation of the distal end of the push wire from the second orientation to the first orientation.

[0015] In some examples, the one or more locking wires can be configured to prevent the spring from rotating the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the aperture.

[0016] In some examples, the one or more locking wires can be effective to prevent axial rotation of the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the aperture of the connector.

[0017] In some examples, the detachment mechanism can include a microcatheter sized to deliver the intravascular implant to the treatment site when the intravascular implant is in a non-expanded configuration.

[0018] In another aspect, the present invention discloses a method for constructing an intravascular implant disengagement mechanism. The method may include providing an intravascular implant, the intravascular implant including a clamping end. The method may include forming a connector having a first end configured to be attached to the clamping end of the intravascular implant, a second end including an oblong orifice, and a generally circular cavity distal to the oblong orifice. The method may include attaching the first end of the connector to the clamping end. The method may include providing a push wire. The push wire may include a distal end. The method may include flattening the distal end of the push wire into an oblong shape. The method may include forming one or more slotted openings in the flattened distal end of the push wire. The method may include providing one or more locking wires, the one or more locking wires being configured to fit into the oblong orifice. The method may include positioning the flattened distal end of the push wire within the second end, wherein the flattened distal end of the oblong orifice is in a first orientation (e.g., disengaged) relative to the oblong orifice. The method may include securing the push wire to the connector by axially rotating the distal end relative to the oblong aperture from a first orientation to a second orientation (attachment). The method may include positioning one or more locking wires into the oblong aperture when the distal end of the push wire is in the second orientation.

[0019] In some examples, the method may include providing a spring within the generally circular cavity, the spring configured to rotate a distal end of the push wire from the second orientation to the first orientation in response to removal of the one or more locking wires.

[0020] In some examples, the method may include forming an inclined inner surface within the connector such that a distal end of the push wire rotates from the second orientation to the first orientation in response to pulling the push wire in a proximal direction.

[0021] In some examples, the method can include delivering the push wire, the one or more locking wires, the connector, and the intravascular implant to the treatment site via a microcatheter while the intravascular implant is in a non-deployed configuration.

[0022] In some examples, the method may also include expanding the intravascular implant to an expanded configuration; removing one or more locking wires from the oblong orifice of the connector; releasing the distal end of the push wire from the connector by rotating the distal end from a second orientation to a first orientation; and deploying the intravascular implant at the treatment site to occlude the substantially spherical cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above aspects and additional aspects of the present invention will be further discussed with reference to the following description and in conjunction with the accompanying drawings, in which like numbers indicate similar structural elements and features in the various figures. The accompanying drawings are not necessarily drawn to scale, but rather, emphasis is placed on illustrating the principles of the present invention. The accompanying drawings depict one or more specific implementations of the present invention by way of example only and not by way of limitation.

[0024] Figure 1A is a schematic diagram of a disengagement mechanism according to aspects of the present invention, the disengagement mechanism comprising a connector, a push wire, and one or more lock wires, all in a disconnected state;

[0025] Figure 1B According to various aspects of the present invention, the Figure 1A Schematic diagram of the disengagement mechanism;

[0026] Figure 1C According to various aspects of the present invention, Figure 1B A schematic cross-sectional view of the disengagement mechanism shown;

[0027] Figure 1D According to various aspects of the present invention, Figure 1C A schematic cross-sectional view of the disengagement mechanism shown;

[0028] FIG. 2A to FIG. 2E illustrates a disengagement sequence of an implant from the example disengagement mechanism of FIG. 1 according to aspects of the present invention, wherein Figure 2B For Figure 2A A schematic cross-sectional view of the disengagement mechanism shown;

[0029] FIG. 3A to FIG. 3D The disengagement sequence of another example disengagement mechanism having an inclined inner surface according to aspects of the present invention is illustrated, wherein Figure 3C For Figure 3B A cross-sectional schematic diagram of the disengagement mechanism shown, and wherein Figure 3D For Figure 3C A schematic cross-sectional view of the disengagement mechanism shown;

[0030] FIG. 4A to FIG. 4C illustrates a disengagement sequence of an example implant from another example disengagement mechanism according to aspects of the present invention;

[0031] Figure 5is a schematic diagram of an example aneurysm to be occluded by an implant; and

[0032] Figure 6 is a flow chart of a method for configuring a disengagement mechanism according to aspects of the present invention. DETAILED DESCRIPTION

[0033] As used herein, the term "about" or "approximately" for any numerical value or range indicates a suitable dimensional tolerance that allows a collection of parts or components to achieve its intended purpose as described herein. More specifically, "about" or "approximately" may refer to a value range of ±20% of the recited value, for example, "about 90%" may refer to a value range of 71% to 99%.

[0034] Generally speaking, the examples described herein include a disengagement mechanism that can be used with a braided implant that can be fixed in the aneurysm sac and block a large part of the aneurysm neck. The implant can include a tubular braid that can be set to a predetermined shape, compressed to be delivered by a microcatheter, and implanted in at least one implantation position of a predetermined shape and geometry of the aneurysm in which the braid is implanted. When compressed, the implant can be short enough to mitigate the friction generated when the implant is delivered without a sheath by a microcatheter, thereby allowing a more simplified delivery system compared to some other known braided embolic implant delivery systems. The implant can be as described in U.S. Patent No. 10,653,425, the entire contents of which are incorporated herein by reference as if the entire text is included, and variations thereof, improvements thereof, and alternative braided implants as understood by those skilled in the relevant art.

[0035] The intravascular implant may include a memory shape material that is heat set into a predetermined shape, deformable for delivery through a catheter, and self-expandable into an implanted shape that is based on the predetermined shape and constrained by the anatomy of the aneurysm in which it is implanted.

[0036] Figures 1A to 1DA detachment mechanism including a connector, a push wire, and one or more locking wires is illustrated. As shown, the detachment mechanism 100 may include an intravascular implant 110 having a clamping end 112 connected to a first end 134 of a connector 130. The connector 130 may have a first end 134 and a second end 133, the first end being connected to the intravascular implant 110. The second end 133 may include an orifice 132. Although the orifice 132 is illustrated as being generally oblong, in some embodiments (not shown), the orifice 132 may take various other forms, such as a triangle, a rectangle, a hexagon, etc. The detachment mechanism 100 may include a push wire 160. The push wire 160 may include a distal end 162, which may be a generally flattened portion of the push wire 160. The distal end 162 of the push wire 160 may also include one or more slotted openings 164, and when the distal end 162 and the connector 130 are in a first orientation (e.g., such as Figure 1A ), it can be sized to fit into the oblong aperture 132 of the second end 133 of the connector, in which the distal end 162 and the connector 130 are aligned such that the flattened portion of the distal end 162 is parallel to the flattened portion of the oblong aperture 132. The disengagement mechanism can also include one or more locking wires 140.

[0037] Figure 1B For connected Figure 1A Schematic diagram of a detachment mechanism of the present invention. To attach the connector 130 to the push wire 160, the distal end 162 of the push wire 160 can be inserted into the oblong aperture 132 in a first orientation, the push wire 160 can then be axially rotated approximately 90° to move the distal end 162 to a second orientation, and then one or more locking wires 140 can be inserted into the oblong aperture 132 of the connector 130 while the distal end 162 of the push wire 160 is in the second orientation within the oblong aperture 132. In some examples, the detachment mechanism 100 can employ two locking wires 140. In some examples, the detachment mechanism 100 can employ one locking wire 140. In other examples, the detachment mechanism 100 can employ multiple locking wires 140.

[0038] Figure 1C For Figure 1B A schematic cross-sectional view of the disengagement mechanism is shown. Figure 1D For Figure 1CThe one or more slotted openings 164 of the push wire 160 can be configured to cooperate with the wall of the oblong aperture 132, so that when the distal end 162 is rotated from the first orientation to the second orientation to lock the connector to the push wire 160, a portion of the wall of the oblong aperture 132 intersects with the one or more slotted openings 164. That is, when the distal end 162 of the push wire 160 is in the second orientation, a portion of the wall of the oblong aperture 132 can reside within the one or more slotted openings 164.

[0039] FIG. 2A to FIG. 2E The implant is shown in FIG. Figures 1A to 1D An example of a disengagement sequence for a disengagement mechanism. Figure 2A The detachment mechanism 100 is shown being delivered to a treatment site via a microcatheter 600, wherein the intravascular implant 110 is in a non-expanded (e.g., collapsed) configuration. For illustrative purposes, the connector 130 is shown in a cross-sectional view. As shown, the distal end 162 of the push wire 160 is in a second (e.g., attached) orientation relative to the connector 130. In the second orientation, the push wire 160 is connected to the connector 130 and the intravascular implant 110. As shown, when the distal end 162 of the push wire 160 is in the second orientation, one or more locking wires 140 are configured to fit through the oblong orifice 132 and enter the generally circular cavity 138. Figure 2A In FIG. 1 , intravascular implant 110 is attached to push wire 160 via a connector.

[0040] Figure 2B For Figure 2A A schematic cross-sectional view of the disengagement mechanism is shown. Figure 2B The cross-sectional diagram is similar to Figure 1C A cross-sectional diagram of Figure 2B A microcatheter 600 is added.

[0041] Figure 2C One or more locking wires 140 are shown after having been pulled proximally and having left the generally circular cavity 138. For illustrative purposes, the connector 130 is shown in a cross-sectional view. The first step of the disengagement sequence may include pulling one or more locking wires 140 proximally. As shown, one or more locking wires 140 may leave the oblong aperture 132 of the connector 130, thereby allowing the push wire 160 to rotate from the second (e.g., attached) orientation to the first (e.g., disengaged) orientation. Although the arrows show clockwise rotation, in some configurations, the push wire 160 may be rotated in a counterclockwise direction so as to convert the push wire 160 from the second orientation to the first orientation.

[0042] Figure 2DThe disengagement mechanism 100 is shown after the push wire 160 has been rotated from the second orientation to the first orientation. For illustrative purposes, the connector 130 is shown in cross-section. In the second orientation, no portion of the wall of the oblong aperture 132 interfaces with the one or more grooved recesses 164 of the distal end 162 of the push wire 160. In other words, the distal end 162 of the push wire can be removed from the oblong aperture 132 without any obstruction.

[0043] Figure 2E The connector 130 is shown to be completely disengaged from the push wire 160 when the push wire 160, one or more locking wires 140, and the microcatheter 600 are retracted. When the microcatheter 600 is retracted, the intravascular implant 110 can be configured to expand from a non-expanded (e.g., collapsed) configuration to an expanded (e.g., expanded) configuration so that the intravascular implant 110 effectively occludes the substantially spherical cavity at the treatment site. According to some examples, the substantially spherical cavity can be an aneurysm in a patient.

[0044] FIG. 3A to FIG. 3D The disengagement sequence of another example disengagement mechanism 100 having an inclined inner surface 136 is illustrated. In this embodiment, the connector 130 may have an inclined inner surface 136 within a generally circular cavity 138, such that when removing one or more lock wires 140, the distal end 162 of the push wire 160 is forced to transition from the second (e.g., attached) orientation to the first (e.g., unattached) orientation in response to pulling the push wire 160 in the proximal direction. That is, the operator of the disengagement mechanism 100 having an inclined inner surface 136 may not need to rotate the push wire 160 in order to disengage the push wire 160 from the connector 130. Instead, by pulling the push wire 160 proximally, the distal end 162 may automatically rotate from the second (e.g., engaged) orientation to the first (e.g., disengaged) orientation.

[0045] Figure 3A A side view of a disengagement mechanism 100 having an inclined inner surface 136 in a connected configuration is shown. For purposes of illustration, the connector 130 is shown in cross-section. The distal end 162 of the push wire 160 is in a first orientation within the connector 130. The disengagement mechanism may include a pull wire 140 (not shown). Similar to Figures 1A to 1D As shown, the distal end 162 of the push wire 160 can be fixed to the connector by the pull wire 140, and similar to Figure 2A As shown, implant 110 can be moved through microcatheter 600 by push wire 160. Pull wire 140 can be similar to Figure 2B As shown retracted to allow distal end 162 of push wire 160 to rotate.

[0046] Figure 3B As push wire 160 is pulled proximally Figure 3AFor illustrative purposes, connector 130 is shown in cross-section. When push wire 160 is pulled proximally, inclined surface 136 facilitates rotation of distal end 162 of push wire 160 from a first orientation to a second orientation.

[0047] Figure 3C For Figure 3B A cross-sectional view of the disengagement mechanism is shown.

[0048] Figure 3D For Figure 3C A schematic cross-sectional view of the disengagement mechanism is shown.

[0049] FIG. 4A to FIG. 4C The disengagement sequence of another example disengagement mechanism with a spring is illustrated. The disengagement mechanism 100 shown is similar to the previously described examples, except that the example disengagement mechanism includes a spring 190 integrated within a generally circular cavity 138 of the connector 130. More specifically, the spring 190 can be mounted within the generally circular cavity 138 so that the spring 190 interfaces with the distal end 162 of the push wire 160. When the push wire 160 is in a second (e.g., attached) configuration, the spring 190 can be configured to be in a twisted configuration.

[0050] like Figure 4A As shown, one or more lock wires 140 can be pulled proximally to initiate the disengagement sequence. Figure 4B In one embodiment, one or more lock wires 140 are removed and spring 190 applies a rotational force to distal end 162 of push wire 160, thereby moving distal end 162 from the second (eg, attached) orientation to the first (eg, detached) orientation. Figure 4C The connector 130 is shown to be completely disengaged from the push wire 160 when the push wire 160, one or more locking wires 140, and the microcatheter 600 are retracted. When the microcatheter 600 is retracted, the intravascular implant 110 can be configured to expand from a non-expanded (e.g., collapsed) configuration to an expanded (e.g., expanded) configuration so that the intravascular implant 110 effectively occludes the substantially spherical cavity at the treatment site. According to some examples, the substantially spherical cavity can be an aneurysm in a patient.

[0051] As will be appreciated by those skilled in the relevant art, the features of the example breakaway features disclosed herein may be combined. For example, FIG. 4A to FIG. 4C The illustrated spring 190 may be added to Figures 1A to 3C The detachment feature portion is illustrated in FIG.

[0052] Figure 5 Schematic diagram of an example aneurysm to be occluded by an implant. Figure 5The height HA, the sac diameter DA, and the neck diameter DN measurements of the spherical cavity A are illustrated. In some examples, the spherical cavity can be an aneurysm of the patient. The position of the plane 18 defining the boundary between the spherical cavity A and the blood vessel is also illustrated. As shown, the spherical cavity A may include a neck 16, a wall 14, and a distal wall 15. The spherical cavity A may also include a spherical cavity interior 12. The intravascular implant 110 may be configured to block the spherical cavity A after the spherical cavity A is disengaged from the disengagement mechanism 100 as described above.

[0053] Figure 6 Flow chart of a method 700 for constructing a disengagement mechanism. In frame 702, the method may include providing an intravascular implant 110, the intravascular implant including an open end 114 and a clamping end 112. In some examples, the implant may be a braided intravascular implant. In frame 704, the method may include forming a connector 130. The connector 130 may have a first end configured to be attached to the clamping end 112 of the implant 110. The clamping end 112 may be configured to fit into the first end 134 of the connector 130 with an interference fit. Other adhesion methods may be used, including gluing, welding, etc. The connector may be formed with a second end 133. The second end 133 may be shaped to have an oblong orifice 132. The interior of the connector 130 may be a generally circular cavity 138, and in some other examples, the interior of the connector 130 may be an inclined inner surface.

[0054] In block 706, the method may include attaching the first end 134 of the connector to the clamping end 112. As described above, the clamping end 112 of the implant 110 may be adhered to the first end 134 with an interference fit or with another adhesion method such as adhesive, welding, etc.

[0055] In block 708, the method may include providing a push wire 160. The push wire may include a distal end 162. The push wire may be made of any suitable material, such as a metal alloy. In some examples, the push wire may be at least partially made of a shape memory material, such as Nitinol.

[0056] In block 710, the method may include flattening the distal end 162 of the push wire 160 into an oblong shape. Flattening the distal end 162 of the push wire 160 into an oblong shape may be accomplished by any desired method, such as pressing the generally circular distal end 162 in a press until the generally circular shape is deformed into a generally oblong shape.

[0057] In block 712, the method may include forming one or more slotted openings 164 within the flattened distal end 162 of the push wire. For example, the one or more slotted openings 164 may be cut into the flattened distal end 162 using a suitable grinding tool, a laser etching process, or any other suitable technique known in the relevant art.

[0058] At block 714, the method may include providing one or more locking wires 140 configured to fit into the oblong aperture 132. The one or more locking wires may be constructed of a suitable metal alloy, and in some examples, may be constructed of a shape memory material such as Nitinol.

[0059] In block 716, the method may include positioning the flattened distal end 162 of the push wire 1260 within the oblong aperture 132 of the second end 133, wherein the flattened distal end 162 is in a first orientation relative to the oblong aperture 132. For example, in the first orientation, the oblong aperture 132 may be aligned with the flattened distal end 162 such that an elongated flattened portion of the flattened distal end 162 is aligned with an elongated portion of the oblong aperture 132.

[0060] At block 718, the method may include securing the push wire 160 to the connector 130 by axially rotating the distal end 162 from a first orientation to a second orientation relative to the oblong aperture 132. In some examples, the second orientation may be rotated approximately 90 degrees relative to the first orientation.

[0061] In block 720, the method may include positioning the one or more locking wires 140 into the oblong aperture 132 when the distal end 162 of the push wire is in the second orientation. The one or more locking wires 140 may be configured to fit into the oblong aperture 132 when the distal end 162 is in the second orientation relative to the oblong aperture 132 such that the one or more locking wires 140 prevent the distal end 162 of the push wire 160 from rotating to the first orientation when the one or more locking wires 140 are within the oblong aperture 132. Upon removal of the one or more locking wires 140, the distal end 162 of the push wire 160 may be rotated from the second orientation to the first orientation such that the push wire 160 is disconnected from the connector 130.

[0062] The description included herein is an example of an embodiment of the present invention, and is not intended to limit the scope of the present invention in any way. As described herein, the present invention contemplates many variants and modifications of implants, including alternative materials, alternative geometric shapes, alternative features of separation, alternative delivery systems, alternative devices for forming braids into predetermined shapes, alternative treatment methods, etc. These modifications will be apparent to those of ordinary skill in the art to which the present invention belongs, and are intended to be within the scope of the following claims.

Claims

1. An intravascular implant detachment mechanism, the intravascular implant detachment mechanism comprising: an intravascular implant comprising a clamping end; a connector attached to the clamping end at a first end and including an aperture at a second end; a generally circular cavity distal to the orifice; a push wire having a distal end including one or more slotted openings, the distal end configured to fit into the orifice in a first orientation relative to the orifice; and one or more locking wires configured to fit into the aperture when the distal end of the push wire is in a second orientation, Wherein axial rotation of the push wire moves the distal end of the push wire from the first orientation to a second orientation, thereby securing the push wire to the intravascular implant.

2. An intravascular implant detachment mechanism according to claim 1, wherein the connector is configured to detach from the push wire in response to removal of the one or more locking wires from the orifice and axial rotation of the distal end of the push wire from the second orientation to the first orientation.

3. The intravascular implant detachment mechanism according to claim 2 further comprises a spring integrated in the substantially circular cavity, the spring being configured to rotate the distal end of the push wire from the second orientation to the first orientation in response to the removal of the one or more locking wires.

4. An intravascular implant detachment mechanism according to claim 3, wherein the one or more locking wires are configured to prevent the spring from rotating the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the orifice.

5. An intravascular implant detachment mechanism according to claim 1, wherein the connector further comprises an inclined inner surface, wherein the inclined inner surface is configured to facilitate axial rotation of the distal end of the push wire from the second orientation to the first orientation in response to pulling the push wire in a proximal direction.

6. The intravascular implant detachment mechanism of claim 1, wherein the one or more locking wires include two locking wires.

7. An intravascular implant detachment mechanism according to claim 1, wherein the one or more locking wires effectively prevent axial rotation of the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the orifice of the connector.

8. The intravascular implant detachment mechanism of claim 1, further comprising a microcatheter sized to deliver the intravascular implant to a treatment site when the intravascular implant is in a non-deployed configuration.

9. The intravascular implant detachment mechanism of claim 8, wherein the push wire is configured to push the intravascular implant through the microcatheter and to the treatment site.

10. The intravascular implant detachment mechanism of claim 1, wherein the intravascular implant is configured to expand to a deployed configuration to occlude a substantially spherical lumen.

11. An intravascular implant detachment mechanism, the intravascular implant detachment mechanism comprising: an intravascular implant comprising a clamping end; a connector attached to the clamping end at a first end and including an aperture at a second end; a generally circular cavity distal to the orifice; a push wire having a distal end including one or more slotted openings, the distal end configured to fit into the orifice in a first orientation relative to the orifice; one or more locking wires configured to fit into the aperture when the distal end of the push wire is in a second orientation; and a spring disposed within the generally circular cavity, the spring being configured to rotate the distal end of the push wire from a second orientation to the first orientation in response to removal of the one or more locking wires, Wherein axial rotation of the push wire causes the distal end of the push wire to move from the first orientation to the second orientation, thereby securing the push wire to the intravascular implant.

12. An intravascular implant detachment mechanism according to claim 11, wherein the connector is configured to detach from the push wire in response to the removal of the one or more locking wires from the orifice and the axial rotation of the distal end of the push wire from the second orientation to the first orientation.

13. An intravascular implant detachment mechanism according to claim 11, wherein the one or more locking wires are configured to prevent the spring from rotating the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the orifice.

14. An intravascular implant detachment mechanism according to claim 11, wherein the one or more locking wires effectively prevent axial rotation of the distal end of the push wire from the second orientation to the first orientation when the one or more locking wires are positioned within the orifice of the connector.

15. The intravascular implant detachment mechanism of claim 11, further comprising a microcatheter sized to deliver the intravascular implant to a treatment site when the intravascular implant is in a non-deployed configuration.

16. A method of constructing a detachment mechanism for an intravascular implant, the method comprising: providing an intravascular implant comprising a clamping end; forming a connector having a first end configured to attach to the clamping end of the intravascular implant, a second end including an oblong aperture, and a generally circular lumen distal to the oblong aperture; attaching the first end of the connector to the clamping end; providing a push wire, the push wire comprising a distal end; flattening the distal end of the push wire into an oblong shape; forming one or more slotted openings in the flattened distal end of the push wire; providing one or more locking wires configured to fit into the oblong aperture; positioning the flattened distal end of the push wire within the oblong aperture of the second end, wherein the flattened distal end is in a first orientation relative to the oblong aperture; securing the push wire to the connector by axially rotating the distal end relative to the oblong aperture from the first orientation to a second orientation; as well as When the distal end of the push wire is in the second orientation, one or more locking wires are positioned into the oblong aperture.

17. The method of claim 16, further comprising providing a spring within the generally circular cavity, the spring configured to rotate the distal end of the push wire from the second orientation to the first orientation in response to removal of the one or more locking wires.

18. The method of claim 16, further comprising forming an inclined inner surface within the connector such that the distal end of the push wire rotates from the second orientation to the first orientation in response to pulling the push wire in a proximal direction.

19. The method of claim 16, further comprising delivering the push wire, the one or more locking wires, the connector, and the intravascular implant to a treatment site via a microcatheter when the intravascular implant is in a non-deployed configuration.

20. The method according to claim 19, further comprising: expanding the intravascular implant to a deployed configuration; removing the one or more locking wires from the oblong aperture of the connector; releasing the distal end of the push wire from the connector by rotating the distal end from the second orientation to the first orientation; and The intravascular implant is deployed at the treatment site to occlude the substantially spherical lumen.

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