Medical delivery device with a protective member

• US 8,439,934 B2
• Filed: 08/05/2009
• Issued: 05/14/2013
• Est. Priority Date: 08/19/2008
• Status: Active Grant

• Current Assignee: Merit Medical Systems, Inc.
• Original Assignee: Merit Medical Systems, Inc.
• Inventors: Satasiya, Pankaj, Webb, William, Reynolds, Jason, Snider, Robert R.
• Primary Examiner(s): Pellegrino, Brian E.
• Application Number:
  US12/535,980
• Publication Number:
  US 20100049295A1
• Time in Patent Office: 1,378 Days
• Field of Search: 606/108, 606/191, 606/192, 606/194, 606/198, 623/1.11, 623/1.12
• US Class Current: 606/108
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/047 Urethrae

Abstract

A delivery device for positioning and deploying an implantable device within a lumen is provided. The delivery device includes inner and outer tubular members slidable to each other between at least a first hold position and a second release position, a handle and a deployment mechanism adapted for an operator to use a first hand for operating the delivery device and moving the tubular members between the first and second positions. The delivery device further includes a protective member adapted for insulating at least a portion of the outer tubular member from the tendency of the operator to use his or her second hand to grab the outer tubular member during operations or from other external forces.

Claims

1. A delivery device for positioning and deploying an implantable device within a lumen, said delivery device comprising:

a first elongate member having a proximal end with a longitudinal axis extending to a distal end;

a second elongate member having a proximal end and a distal end, said first and second elongate members configured to cooperatively retain the implantable device near the distal ends and to move relative to each other to release the implantable device into the lumen, wherein the first elongate member includes an outer tubular member and the second elongate member includes an inner tubular member extending slidably within the outer tubular member, and wherein a space is defined between the inner tubular member and the outer tubular member near the distal ends to retain the implantable device;

a handle coupled to the proximal end of at least one of the first and second elongate members;

a deployment mechanism coupled to at least one of the inner and outer tubular members and operable to cause a relative motion of the first and second elongate members, wherein the deployment mechanism comprises a first slidable actuator positioned proximal to a second slidable actuator and operably connected thereto, such that slidably retracting the first slidable actuator moves the second slidable actuator and the outer tubular member proximally and longitudinally relative to the inner tubular member, and wherein one of the actuators is coupled to the proximal end of the outer tubular member; and

a protective member in engagement with the handle and configured to extend from the handle around and beyond the deployment mechanism and over at least one portion of the elongate members wherein relative movement occurs, said protective member configured to inhibit impingement of external forces on the relative movement of the elongate members from the handle around and beyond the deployment mechanism and over at least one portion of the elongate members, wherein the protective member extends from the handle and over the deployment mechanism toward the distal end of the outer tubular member, such that a distal end of the protective member terminates proximal to the distal end of the outer tubular member;

wherein at least a portion of the second elongate member is disposed within the first elongate member, such that at least a portion of the second elongate member is longitudinally and axially displaceable relative to the first elongate member; and

wherein the first actuator has a first flange extending transverse to the longitudinal axis and greater than a diameter of the protective member, and the second actuator has a second flange extending transverse to the longitudinal axis and greater than the diameter of the protective member.

2. A delivery device of claim 1, wherein the protective member includes a protective tubular member extending over a proximal portion of the inner and outer tubular members, the protective tubular member configured to inhibit impingement of external forces caused by a grip of an operator.

3. A delivery device of claim 1, wherein the protective member includes a proximal region and a distal region extending from the handle to distally beyond the deployment mechanism and toward the distal end of the outer tubular member, and wherein the proximal region defines one to a plurality of grooves in which the flanges of the actuators are slidable within and the distal region extends along and around at least a portion of the outer tubular member.

4. A delivery device of claim 3, wherein the distal region includes a substantially solid tubular wall.

5. A delivery device of claim 3, wherein the distal region defines at least one aperture.

6. A delivery device of claim 1, wherein the protective member is formed substantially from a material selected from the group consisting of a polypropylene, a poly-vinyl chloride, and a polyethylene.

7. A delivery device for positioning and deploying an implantable device within a lumen comprising:

an outer tubular member with a longitudinal axis extending to a distal end, and an inner tubular member positioned within the outer tubular member such that the inner tubular member and outer tubular member are movable relative to each other between at least a first position and a second position, wherein in the first position the outer and inner tubular members are configured to hold the implantable device and in the second position the outer and inner tubular members are configured to release the implantable device;

a handle coupled to at least one of the outer tubular member and the inner tubular member;

a deployment mechanism coupled to at least one of the inner and outer tubular members and operable to deploy the implantable device within the lumen;

wherein the handle and the deployment mechanism are adapted to be operated by a first hand of an operator for moving the outer and inner tubular members between the at least first and second positions wherein the deployment mechanism comprises a first slidable actuator positioned proximal to a second slidable actuator and operably connected thereto, such that slidably retracting the first slidable actuator moves the second slidable actuator and the outer tubular member proximally and longitudinally relative to the inner tubular member; and

a protective member in engagement with the handle and extending along at least a portion of the outer tubular member from the handle around and beyond the deployment mechanism toward a distal end of the outer tubular member, wherein the protective member extends from the handle and over the deployment mechanism toward the distal end of the outer tubular member, such that a distal end of the protective member terminates proximal to the distal end of the outer tubular member;

wherein the protective member is adapted to be grasped by a second hand of the operator independently from the moving of the outer and inner tubular members between the at least first and second positions;

wherein the first actuator has a first flange extending transverse to the longitudinal axis and greater than a diameter of the protective member, and the second actuator has a second flange extending transverse to the longitudinal axis and greater than the diameter of the protective member.

8. A delivery device of claim 7, wherein the protective member includes a distal region defining a sheath that envelopes at least a portion of the outer tubular member and wherein the outer tubular member is slidable within the sheath.

9. A delivery device of claim 8, wherein the deployment mechanism is positioned between the handle and the distal end of the outer tubular member and wherein the protective member includes a proximal region that extends distally from the handle and beyond the deployment mechanism to the distal region.

10. A delivery device of claim 9, wherein the proximal region of the protective member defines one to a plurality grooves in which the first and second flanges extend through and are slidable within.

11. A delivery device of claim 10, first actuator is coupled to a proximal end of the inner tubular member and the second actuator is positioned between the handle and the first actuator and includes one to a plurality of connector arms for operatively coupling the first and second actuators together;

and wherein the proximal region of the protective member includes one to a plurality of extension arms that extend along the outside of the connector arms.

12. A delivery device of claim 11, wherein each actuator includes two flanges, and both of the connector arms of the second actuator and the extension arms of the proximal region of the protective member define two grooves in which the flanges extend through and are slidable within.

13. A delivery device for positioning and deploying an implantable device within a lumen comprising:

an outer tubular member having a longitudinal axis extending from a proximal to a distal end, wherein the implantable device is positioned proximate to the distal end of the outer tubular member;

an inner tubular member positioned within the outer tubular member and having proximal and distal ends, wherein the outer tubular member is capable of sliding over the inner tubular member between at least a first position and a second position;

a handle coupled to the proximal end of the inner tubular member;

a deployment mechanism operable to slide the outer tubular member between the first and second positions, wherein the deployment mechanism has one to a plurality of actuators, including a first slidable actuator coupled to the proximal end of the outer tubular member positioned proximal to a second slidable actuator and operably connected thereto, such that slidably retracting the first slidable actuator moves the second slidable actuator and the outer tubular member proximally and longitudinally relative to the inner tubular member;

and a protective member in engagement with the handle and extending from the handle around and beyond the deployment mechanism toward the distal end of the outer tubular member to provide insulation to at least a portion of the outer tubular member extending beyond the deployment mechanism, wherein the protective member extends from the handle and over the deployment mechanism toward the distal end of the outer tubular member, such that a distal end of the protective member terminates proximal to the distal end of the outer tubular member;

wherein the first actuator has a first flange extending transverse to the longitudinal axis and greater than a diameter of the protective member, and the second actuator has a second flange extending transverse to the longitudinal axis and greater than the diameter of the protective member.

14. A delivery device of claim 13, wherein the protective member is coupled to the handle.

15. A delivery device of claim 13, the protective member includes a proximal region defining one to a plurality of grooves in which the flanges extend through and slide within.

16. A delivery device of claim 15, wherein the second actuator is between the first actuator and the handle, the second actuator includes at least two connector arms for operatively coupling the second actuator to the first actuator and wherein the proximal region of the protective member includes at least two extension arms that extend along and on the outside the connector arms.

17. A delivery device of claim 13, wherein the protective member includes a distal region extending distally beyond the deployment mechanism in both the first and second positions toward the distal end of the outer tubular member and defining a sheath that envelopes at least a portion of the outer tubular member and wherein the outer tubular member is slidable within the sheath.

18. A delivery device of claim 17, wherein the sheath includes a substantially solid tubular wall.

19. A delivery device of claim 17, wherein the sheath defines at least one aperture.