Reentry catheter

Abstract

A delivery system (100) may have the ability to change its configuration to achieve access and treatment of a target anatomical structure. Such treatment may include guiding an interventional device around an occlusion. By providing different functions at different stages, the need to change and replace tools at different stages may be reduced or eliminated. As a result, such operations may be completed more quickly, efficiently, and safely.

Description

[0001] Related Applications

[0002] This application claims the benefit of U.S. Provisional Application No. 62 / 886,239, filed on August 13, 2019, entitled “RE-ENTRY CATHETER,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates generally to the treatment of stenoses in body vessels and, more particularly, to catheters and methods for crossing chronic total occlusions in blood vessels. Background Art

[0004] Chronic total occlusion ("CTO") is a vascular lesion characterized by severe atherosclerotic plaques in the blood vessels, resulting in complete (or almost complete) blockage of blood flow to the lesion. This occlusion may occur anywhere in the patient's vascular system. Since most lesions are gradually formed over a long period of time, the ischemic tissue downstream of the lesion has time to form collateral circulation. For example, in the case of coronary arteries, collateral vessels can be formed from the proximal artery and connected to the distal artery ("ipsilateral collateral"), or collateral vessels can be formed from other main arterial branches and connected to the distal artery ("contralateral collateral"). When the lesion eventually becomes completely occluded, the collateral circulation is usually sufficient to keep the distal tissue alive, but is ischemic. Therefore, it is hoped that the CTO can be expanded and treated by passing through the CTO and advancing a treatment device (such as a balloon angioplasty catheter) to reconstruct blood flow through or around the blockage in the blood vessel. Similarly, in some cases, it may be necessary to pass through the CTO to enter a certain position along the vascular system distal to the CTO. CTOs may be more difficult to traverse than partially occluded lesions because, unlike the pre-existing lumen, the guidewire must penetrate the lesion or, when penetration of the occlusion is difficult and / or complicated, bypass the lesion via the subintimal layer of the vessel wall.

[0005] The descriptions provided in the Background section should not be admitted to be prior art merely by virtue of being mentioned in or associated with the Background section.The Background section may include information describing one or more aspects of the subject technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A side view of the delivery device is shown.

[0007] Figure 2 A perspective view of the distal portion of the delivery device is shown.

[0008] Figure 3 A top view of the distal portion of the delivery device is shown.

[0009] Figure 4 Shown along Figure 3 A cross-sectional view of the distal portion of the delivery device taken along line AA.

[0010] Figure 5 A side cross-sectional view of the delivery device and guidewire is shown.

[0011] Figure 6 A side cross-sectional view of a delivery device in a body vessel is shown with a guidewire extending out of the distal end of the delivery device.

[0012] Figure 7 A side cross-sectional view of the delivery device is shown with the guidewire proximally retracted within the delivery device.

[0013] Figure 8 A side cross-sectional view of the delivery device is shown with a guidewire extending out of a side port of the delivery device.

[0014] Fig. 9 Shown is a side cross-sectional view of a delivery device and guidewire in a rapid exchange configuration.

[0015] Fig.10 A side cross-sectional view of the delivery device is shown with a guidewire extending through the distal end and side ports of the delivery device.

[0016] Fig.11 A side cross-sectional view of a delivery device in a body vessel is shown with a guidewire extending through the distal end and a side port of the delivery device.

[0017] In one or more embodiments, all components shown in each figure may not be required, and one or more embodiments may include additional components not shown in the figures. The arrangement and type of components may be changed without departing from the scope of the subject disclosure. Additional components, different components, or fewer components may be used within the scope of the subject disclosure. DETAILED DESCRIPTION

[0018] The detailed description set forth below is intended as a description of various embodiments, and is not intended to represent the only embodiment in which the subject technology can be practiced. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways, all without departing from the scope of the present disclosure. Therefore, the drawings and description are considered to be illustrative in nature, rather than restrictive.

[0019] The present technology generally relates to systems, methods, and devices for traversing and treating CTOs.While CTOs are discussed, it should be understood that the devices and methods described herein can facilitate treatment of a variety of conditions.

[0020] It may be desirable to provide a system and / or device that facilitates access to a target anatomical structure (e.g., a CTO in a blood vessel) and further facilitates intervention for restoring flow through the CTO. The various stages of such an operation may involve operating multiple tools to access, penetrate, and treat the target anatomical structure. The systems and methods described herein relate to devices that provide multiple functions at different stages. By providing different functions at different stages, the need to change and replace tools at different stages may be reduced or eliminated. Therefore, such operations may be completed more quickly, efficiently, and safely.

[0021] References Figure 1-11 Specific details of several embodiments of the present technology are described. Although many embodiments of devices and methods for passing through and / or treating CTOs are described below, in addition to the vascular occlusions described herein, any vascular occlusion (e.g., complete occlusion, partial occlusion, occlusion caused by thrombus, occlusion caused by embolism, occlusion caused by atherosclerosis, etc.) can be passed through and / or treated within the scope of the present technology. In addition, other embodiments of the present technology may have different configurations, components, or processes than those described herein. For example, other embodiments may include additional elements and features in addition to the elements and features described herein, or other embodiments may not include several elements and features shown and described herein.

[0022] like Figure 1 As shown, the system may include a delivery device 100 for delivering another device through its lumen. The delivery device 100 may include a connector 106, which is located at and / or defines the proximal portion 102 of the delivery device 100, and the connector provides a handle, a luer connector, a connector, and / or a hub. For example, the connector 106 may include mating features and / or receiving features for securely connecting to other components. The connector 106 may include a Touhy Bourst seal configured to fix the position of one or more devices within the delivery device 100.

[0023] The delivery device 100 may further include a distal tip 190 located at and / or defining the distal portion 104 of the delivery device 100. The distal tip 190 may include a radiopaque distal tip (e.g., polymer, tungsten, barium, etc.). The delivery device 100 may further include a shaft 110 extending between the connector 106 and the distal tip 190. The connector 106 may be configured to be positioned at a location outside the patient's body, and the shaft 110 may be configured to position the distal tip 190 (e.g., intravascularly) at or near a complete or partial occlusion within a patient's blood vessel. The delivery device 100 may have a lumen and / or side port 150 extending from the connector 106 to the distal tip 190. The delivery device 100 may include a strain relief element between the shaft 110 and another portion at the connector 106. For example, the strain relief element may surround or otherwise engage the shaft 110 at its proximal end.

[0024] The delivery device 100 can receive one or more devices (eg, guidewire 200) into a lumen through the distal portion 104. The delivery device 100 can receive one or more devices (eg, pass-through device 300) into a lumen through the proximal portion 102.

[0025] The shaft 110 can be sized and shaped to access a target site (e.g., a treatment site) of a patient intravascularly. In some embodiments, for example, the shaft 110 has a length of about 150 cm to about 180 cm and a suitable cross-sectional size for positioning within the vascular system of a subject. The length of the shaft 110 can be a working length, such as a length that can be positioned within the vascular system of a subject. In some embodiments, for example, the working length is about 70 cm to about 300 cm, about 150 cm to about 250 cm, or about 70 cm, about 80 cm, about 90 cm, about 100 cm, about 110 cm, about 120 cm, about 130 cm, about 140 cm, about 150 cm, about 160 cm, about 170 cm, about 180 cm, about 190 cm, about 200 cm, about 210 cm, about 220 cm, about 230 cm, about 240 cm, about 250 cm, about 260 cm, about 270 cm, about 280 cm, about 290 cm or about 300 cm.

[0026] Now Figure 2-4 As shown, the shaft 110 can be or include a catheter shaft that is lined with an inner layer (e.g., polytetrafluoroethylene, a hydrophilic coating, etc.) and / or jacketed with an outer layer (e.g., a polymer, a stainless steel braid, a polyimide, etc.). A side port 150 can be formed in the shaft 110 at a location between the proximal and distal portions 104 of the delivery device 100. The side port 150 connects the lumen 140 to a space laterally adjacent to the shaft 110. The side port 150 can be molded, laser cut, or otherwise formed in the shaft 110.

[0027] like Figure 2 and Figure 3 As shown, the baffle member 160 can be positioned at or near the side port 150. For example, the baffle member 160 can extend from a portion of the shaft 110 adjacent to the side port 150. The baffle member 160 can extend at least partially into the lumen 140 and at least one of its configurations. The baffle member 160 can be integrally formed (e.g., monolithic) with at least a portion of the shaft 110 and / or securely coupled to the shaft. As used herein, a monolithic structure is a structure integrally formed from a single piece of material, rather than a structure formed from separate components joined together by an interface. For example, the baffle member 160 and the shaft 110 can be monolithic and / or a single structure. By providing an integral, unitary and / or monolithic baffle member 160 and shaft 110, these components do not need to include interfaces or discontinuities, such as interfaces or discontinuities that occur in assembled parts. Therefore, the integral, unitary and / or monolithic baffle member 160 and shaft 110 can be manufactured to more precise and consistent dimensions and provide greater structural support.

[0028] Baffle member 160 may include a metal, such as a shape memory alloy (e.g., Nitinol). Baffle member 160 may be heat set (e.g., annealed) to a position and / or configuration such that in the absence of an external force deflecting baffle member 160, it is biased to the configuration (e.g., first position).

[0029] like Figure 4 As shown, in at least one configuration, the baffle member 160 can extend from the shaft 110 into the lumen 140. For an object traveling along the longitudinal axis 108 of the delivery device 100 (e.g., within the lumen 140), the baffle member 160 can block at least a portion of the lumen 140. When an object approaches the baffle member 160 from one side of the baffle member 160, the baffle member 160 can be positioned and shaped to allow the object to remain within the lumen 140 while passing through the baffle member 160. When an object approaches the baffle member 160 from another side of the baffle member 160, the baffle member 160 can be positioned and shaped to deflect the object out of the lumen 140 and through the side port 150 while passing through the baffle member 160.

[0030] like Figure 4 As further shown, the baffle member 160 can include a tip that facilitates interaction with and passage of a guidewire 200 or other interventional device. For example, the tip can include a concave shape that receives a portion of the guidewire 200. Such a shape can help guide the guidewire 200 to a preferred position relative to the baffle member 160 and maintain the guidewire 200 at a particular position (e.g., radially and / or circumferentially) within the lumen 140 as the guidewire 200 travels longitudinally within the lumen 140.

[0031] Reference now Figure 5-8 In some embodiments, the delivery device 100 can be operated to facilitate positioning of other devices relative to a body vessel and / or an object therein (e.g., a CTO). Figure 5 As shown, the guidewire 200 can be inserted through the distal portion 104 of the delivery device 100. When the guidewire 200 passes through the baffle member 160, the baffle member 160 can be deflected as needed to allow the guidewire 200 to pass through the lumen 140 and beyond the baffle member 160. In addition, the baffle member 160 can maintain the guidewire 200 within the lumen 140 and prevent the guidewire 200 from leaving the shaft 110 through the side port 150. Thus, the guidewire 200 can be guided to the proximal end of the delivery device 100 for the user to operate at the proximal end.

[0032] like Figure 6 As shown, the delivery device 100 and the guidewire 200 can be positioned within the patient's anatomical structure (e.g., within a blood vessel and adjacent to the occlusion 180). At least a portion of the guidewire 200 can remain within the lumen 140 and distal to the baffle member 160. Thus, the baffle member 160 can be maintained in a deflected (e.g., second) position. The guidewire 200 can be operated to penetrate the occlusion. Additionally or alternatively, another device (e.g., a device coupled to the guidewire 200 and / or inserted through the proximal end of the delivery device) can be operated to penetrate the occlusion. The guidewire 200 and / or another device can move within the lumen 140 and maintain a position partially distal to the baffle member 160 by limiting its proximal retraction.

[0033] like Figure 7 As shown, the guidewire 200 can be operated to facilitate subintimal penetration and / or passing through the occlusion. The guidewire 200 can be retracted proximally to be completely proximal to the baffle member 160. When the guidewire 200 no longer crosses the baffle member 160, the baffle member 160 can return to the biased (e.g., first) position, in which it blocks at least a portion of the lumen 140.

[0034] like Figure 8 150. As shown, the baffle member 160 can guide the guidewire 200 through the side port 150. The guidewire 200 can be advanced distally until it contacts the baffle member 160. The baffle member 160 in its biased position can provide a surface that guides the guidewire 200 away from the lumen 140, through the side port 150, and toward the vessel wall. For example, the baffle member 160 can form an oblique (i.e., neither parallel nor perpendicular) angle relative to the longitudinal axis 108 of the shaft 110. Thus, by longitudinally advancing the guidewire 200 against the baffle member 160, the baffle member 160 redirects the guidewire 200 out of the side port 150 and redirects the guidewire in a direction that forms an oblique angle relative to the longitudinal axis 108 of the shaft 110.

[0035] The guidewire 200 can be operated to penetrate the vessel wall. Additionally or alternatively, another device (e.g., a device connected to the guidewire 200 and / or inserted through the proximal end of the delivery device) can be operated to penetrate the vessel wall. Such penetration can allow the guidewire 200 to bypass the occluded portion 180, thereby providing a passage to the opposite side thereof. Such passages can be used to restore and enhance the flow across the occluded portion 180.

[0036] Additionally or alternatively, in one or more steps described herein and / or in additional steps, guidewire 200 can be used with or replaced by an interventional device. An example of such an interventional device is a device for passing through disclosed in International Patent Application No. PCT / US2010 / 047170 entitled "SYSTEMS, METHODS AND DEVICES FOR ABLATION, CROSSING, AND CUTTING OF OCCLUSIONS" filed on August 30, 2010, which is incorporated herein by reference in its entirety. For example, an interventional device can be actuated (e.g., pushed forward, retracted, rotated, etc.) and provide features (e.g., blades, edges, cutting tools, etc.) that facilitate penetration or other actions relative to a target anatomical structure (e.g., CTO, vascular wall, etc.).

[0037] The delivery device may include any number of side ports 150 and baffle members 160. Different side ports 150 and baffle members 160 may be close to each other, distant from each other, and / or axially overlap. Different side ports 150 and baffle members 160 may be located on the same or different radial sides relative to each other. Devices (e.g., guidewires, interventional devices, etc.) extending through different side ports may extend through the same proximal end and / or lumen of the shaft, or extend through different locations.

[0038] Reference now Figure 9-11 , the delivery device 400 can be operated to facilitate operation of the device and / or fluid flow relative to a body vessel and / or an object therein (e.g., a CTO). Fig. 9 As shown, the guidewire 200 can be inserted through the distal end 404 of the delivery device 400. Such an operation can be performed while the delivery device 400 is outside the patient's body.

[0039] like Fig.10 As shown, the baffle member 460 can guide the guidewire 200 through the side port 450. The guidewire 200 can be advanced proximally until it contacts the baffle member 460. The baffle member 460 in its biased position can provide a surface to guide the guidewire 200 away from the lumen 440 and through the side port 450.

[0040] like Fig.11As shown, the delivery device 400 along with the guidewire 200 can be positioned within the patient's anatomy (eg, a blood vessel).

[0041] At least a portion of the guidewire 200 may remain within the lumen 140 and distal to the baffle member 160. The guidewire 200 and / or another device may be moved within the lumen 140 and / or along the shaft 410.

[0042] Fluid may be provided through lumen 440 for injection into a target anatomical structure. For example, fluid may be provided at the proximal end of delivery device 400 and through lumen 440. When the fluid flow impinges upon baffle member 460, baffle member 460 may be deflected as desired to allow fluid to pass through lumen 440 and beyond baffle member 460. In addition, baffle member 460 may maintain at least some of the fluid within lumen 440 and prevent at least some of the fluid from flowing out of shaft 410 through side port 450. Thus, the fluid may be directed to distal end 404 of delivery device 400 for injection. Such operations may be performed while guidewire 200 and / or another device is at least partially retained within lumen 440 (e.g., distal to baffle member 460 and / or side port 450).

[0043] The delivery device may include any number of side ports 450 and baffle members 460. Different side ports 450 and baffle members 460 may be close to each other, away from each other, and / or axially overlap. Different side ports 450 and baffle members 460 may be located on the same or different radial sides relative to each other. Devices (e.g., guidewires, interventional devices, etc.) extending through different side ports may extend through the same distal end and / or lumen of the shaft, or extend through different locations.

[0044] Although delivery device 100 and delivery device 400 are shown as separate devices, it should be understood that a single delivery device may include one or more of each of side port 150, baffle member 160, side port 450, and / or baffle member 460. Side port 150 and baffle member 160 may be proximal to, distal to, and / or axially overlap with side port 450 and baffle member 460. Side port 150 and baffle member 160 may be on the same or different radial sides relative to side port 450 and baffle member 460.

[0045] The delivery devices described herein are sized and shaped to be placed in vessels including arteries (e.g., coronary arteries, peripheral arteries, carotid arteries, Willis circle, anterior cerebral arteries, middle cerebral arteries, posterior cerebral arteries, any lenticulostriate arteries, renal arteries, femoral arteries), veins (e.g., cerebral veins, saphenous veins, arteriovenous fistulas), or any other vessels that may contain a treatment site. Other vessels are also contemplated, and delivery devices may be formed and / or selected based on known destinations and / or travel paths in the patient's body.

[0046] Thus, the systems and methods described herein provide multiple functions at different stages. By providing different functions at different stages, the need to change and replace tools at different stages can be reduced or eliminated. Thus, such operations can be completed more quickly, efficiently and safely.

[0047] For convenience, various examples of various aspects of the present disclosure are described as clauses below. These are provided only as examples and do not limit the subject technology.

[0048] Item A: A delivery device comprising: a proximal end; a distal end; a shaft defining a lumen extending between the proximal end and the distal end; a side port extending through the shaft at a portion between the proximal end and the distal end of the shaft; and a baffle member extending from the shaft toward the proximal end of the delivery device distal to the side port, the baffle member being configured to transition from a first position (blocking at least a portion of the lumen) to a second position (blocking at least a portion of the side port).

[0049] Item B: A delivery device comprising: a proximal end; a distal end; a shaft defining a lumen extending between the proximal end and the distal end; a side port extending through the shaft at a portion between the proximal end and the distal end of the shaft; and a baffle member extending from the shaft toward the distal end of the delivery device proximal to the side port, the baffle member being configured to transition from a first position (blocking at least a portion of the lumen) to a second position (blocking at least a portion of the side port).

[0050] Item C: A method comprising: inserting a proximal portion of a guidewire into a lumen of a delivery device through a distal end of the delivery device and through a baffle member of the delivery device; retracting the guidewire until the distal portion of the guidewire is proximal to the baffle member; and advancing the guidewire until the baffle member guides the distal portion of the guidewire out of the lumen and through a side port of the delivery device.

[0051] One or more of the above clauses may include one or more of the following features. It should be noted that any of the following clauses may be combined with each other in any combination and placed in a corresponding independent clause, such as clause A, clause B or clause C.

[0052] Item 1: The baffle member is biased toward the first position.

[0053] Clause 2: An interventional device extending within the lumen and through the side port, wherein the interventional device is proximally retractable to be completely proximal to the baffle member.

[0054] Clause 3: The baffle member is biased toward the interventional device.

[0055] Item 4: The interventional device is a guidewire.

[0056] Clause 5: When in the first position, the baffle member extends from the side port to a wall of the shaft opposite the side port.

[0057] Clause 6: The end of the baffle member defines a concave shape.

[0058] Clause 7: When in the first position, the baffle member forms an oblique angle relative to the longitudinal axis of the shaft.

[0059] Clause 8: An interventional device extending through the distal end of a delivery device a lumen length distal to the side port and extending through the side port.

[0060] Clause 9: After insertion and before retraction: advancing the guidewire to the target anatomical structure; and advancing the delivery device to the target anatomical structure over the guidewire.

[0061] Item 10: The baffle member is biased to a first position (blocking at least a portion of the lumen) and away from a second position (blocking at least a portion of the side port).

[0062] Clause 11: Inserting transitions the baffle member from the second position to the first position.

[0063] Unless otherwise specified, an element in the singular form does not refer to one or only one, but to one or more. For example, "a" module may refer to one or more modules. Without further limitation, an element beginning with "a", "an", "the" or "said" does not exclude the presence of additional identical elements.

[0064] The use of headings and subheadings, if any, is for convenience only and does not limit the invention. The word "exemplary" is used to mean serving as an example or illustration. To the extent that the terms "including," "having," and the like are used as transition words in the claims, such terms are intended to be inclusive in a manner similar to the term "comprising" being interpreted. Relational terms such as first and second, etc. may be used to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

[0065] For example, an aspect, this aspect, another aspect, some aspects, one or more aspects, an implementation, this implementation, another implementation, some implementations, one or more implementations, an embodiment, this embodiment, another embodiment, one or more embodiments, a construction, this construction, another construction, some constructions, one or more constructions, subject technology, this disclosure, the present disclosure, other variations and similar variations thereof are for convenience and do not mean that the disclosure associated with the phrase is necessary for the subject technology, or that the disclosure is applicable to all constructions of the subject technology. The disclosure associated with such phrases may be applicable to all constructions, or one or more constructions. The disclosure associated with such phrases may provide one or more examples. For example, a phrase of an aspect or some aspects may refer to one or more aspects, and vice versa, and this is similarly applicable to other aforementioned phrases.

[0066] The phrase "at least one" preceding a series of items, with the terms "and" or "or" separating any of the items, modifies the list as a whole, rather than each member of the list. The phrase "at least one" does not require selection of at least one of the items; rather, the phrase allows for a meaning that includes at least one of any one item, and / or at least one of any combination of items, and / or at least one of each item. For example, each of the phrases "at least one of A, B, and C" or "at least one of A, B, or C" refers to A only, B only, or C only; any combination of A, B, and C; and / or at least one of A, B, and C.

[0067] It should be understood that the specific order or hierarchy of the disclosed steps, operations or processes is an illustration of an exemplary method. Unless otherwise expressly stated, it should be understood that the specific order or hierarchy of steps, operations or processes can be performed in different orders. Some steps, operations or processes can be performed simultaneously. The attached method claims (if any) present the elements of various steps, operations or processes in an exemplary order and are not meant to be limited to the specific order or hierarchy presented. These can be performed in serial, linear, parallel or different orders. It should be understood that the instructions, operations and systems described can generally be integrated in a single software / hardware product, or packaged in multiple software / hardware products.

[0068] In one aspect, the term coupled, etc. may refer to a direct coupling. In another aspect, the term coupled, etc. may refer to an indirect coupling.

[0069] Terms such as top, bottom, front, back, side, horizontal, and vertical refer to an arbitrary frame of reference other than the ordinary gravitational frame of reference. Thus, such terms can extend upward, downward, diagonally, or horizontally in a gravitational frame of reference.

[0070] Generally, unless the context indicates otherwise, the terms "distal" and "proximal" in this disclosure refer to a position relative to an operator or an operator's controls. For example, "proximal" may refer to a position closer to an operator or an operator's controls, and "distal" may refer to a position farther from an operator or an operator's controls.

[0071] The present disclosure is provided to enable any person skilled in the art to practice the various aspects described herein. In some cases, well-known structures and components are shown in block diagram form to avoid blurring the concept of the subject technology. The present disclosure provides various examples of the subject technology, and the subject technology is not limited to these examples. Various modifications to these aspects will be apparent to those skilled in the art, and the principles described herein may be applied to other aspects.

[0072] All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to one of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in a claim. No claim element is to be construed under the provisions of 35 U.S.C. §112, paragraph 6, unless the element is expressly recited using the phrase “means for” or, in the case of a method claim, the element is recited using the phrase “for the step of.”

[0073] The titles, background, summary, abstract, and drawings of the drawings are incorporated herein into the present disclosure and are provided as illustrative examples of the present disclosure, rather than as limiting descriptions. The present application is submitted with the understanding that they will not be used to limit the scope or meaning of the claims. In addition, in the detailed description, it can be seen that the description provides illustrative examples and that various features are combined together in various implementations in order to simplify the present disclosure. The disclosed method should not be interpreted as reflecting the intention that the claimed subject matter requires more features than those expressly stated in each claim. On the contrary, as reflected in the claims, the inventive subject matter lies in less than all the features of a single disclosed construction or operation. The claims are thereby incorporated into the detailed description, and each claim exists independently as a separately claimed subject matter.

[0074] The claims are not intended to be limited to the aspects described herein, but are to be accorded the full scope consistent with the language of the claims and including all legal equivalents. Nevertheless, all claims are intended to include subject matter that does not satisfy applicable patent law requirements and should not be interpreted in such a manner.

Claims

1. A conveying device, comprising: proximal; remote; a shaft defining a lumen extending between the proximal and distal ends; a side port extending through the shaft at a portion of the shaft between the proximal and distal ends; as well as a baffle member extending from the shaft toward a proximal end of the delivery device distal to the side port, the baffle member being configured to transition from a first position blocking at least a portion of the lumen to a second position blocking at least a portion of the side port, The distal end of the baffle member defines a concave shape configured to facilitate guiding the interventional device to the baffle member and maintain the interventional device in a radial and / or circumferential position within the lumen as the interventional device longitudinally advances within the lumen.

2. The conveying device according to claim 1, wherein: The shutter member is biased toward a first position.

3. The conveying device according to claim 1, wherein: The interventional device extends within the lumen and through the side port, wherein the interventional device is proximally retractable to be completely proximal of the baffle member.

4. The conveying device according to claim 3, wherein: The baffle member is biased toward the interventional device.

5. The conveying device according to claim 3, wherein: The interventional device is a guide wire.

6. The conveying device according to claim 1, wherein: When in the first position, the baffle member extends from the side port to a wall of the shaft opposite the side port.

7. The conveying device according to claim 1, wherein: When in the first position, the baffle member forms an oblique angle relative to the longitudinal axis of the shaft.

8. A conveying device, comprising: proximal; remote; a shaft defining a lumen extending between the proximal and distal ends; a side port extending through the shaft at a portion of the shaft between the proximal and distal ends; as well as a baffle member extending from the shaft toward the distal end of the delivery device proximal to the side port, the baffle member being configured to transition from a first position blocking at least a portion of the lumen to a second position blocking at least a portion of the side port, The distal end of the baffle member defines a concave shape configured to facilitate guiding the interventional device to the baffle member and maintain the interventional device in a radial and / or circumferential position within the lumen as the interventional device longitudinally advances within the lumen.

9. The conveying device according to claim 8, wherein: The shutter member is biased toward the first position.

10. The conveying device according to claim 8, wherein: The interventional device extends through the distal end of the delivery device, the lumen length distal to the side port, and extends through the side port.

11. The delivery device according to claim 10, wherein: The baffle member is biased away from the interventional device.

12. The delivery device according to claim 10, wherein: The interventional device is a guide wire.

13. The delivery device according to claim 8, wherein: When in the first position, the baffle member extends from the side port to a wall of the shaft opposite the side port.

14. The delivery device according to claim 8, wherein: When in the first position, the baffle member forms an oblique angle relative to the longitudinal axis of the shaft.

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