Reloadable sheath for catheter system for deploying vasoocclusive devices

• US 10,258,340 B2
• Filed: 05/16/2006
• Issued: 04/16/2019
• Est. Priority Date: 11/09/2001
• Status: Expired due to Fees

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Leopold, Eric, McEvers, Bruce
• Primary Examiner(s): David, Shaun
• Application Number:
  US11/435,303
• Publication Number:
  US 20060241683A1
• Time in Patent Office: 4,718 Days
• Field of Search: 606194, 606200, 606108, 606191, 60416401, 604164, 604264, 604523, 60416405, 623 111
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/12072 the heat created by laser light
• CPC Class Codes: A61B 2017/12077 Joint changing shape upon application of heat, e.g. bi-metal or reversible thermal memory
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 25/0668 splittable, tear apart

Abstract

The introducer sheath can be loaded onto a vasoocclusive device after removal of the vasoocclusive device from a microcatheter, to permit the vasoocclusive embolic coil assembly to be used again during a clinical procedure. The sheath includes a hollow, elongated tubular member with a longitudinal slot formed in the upper wall of the elongated tubular member and extending along the length of elongated tubular member. The upper wall of the elongated tubular member adjacent to the slot has an angled configuration to accept the vasoocclusive device. The sheath may include wing members extending outwardly from the angled configuration on the outside surface of the hollow, elongated tubular member to facilitate insertion of the vasoocclusive device into the sheath. The elongated tubular member may also consist of a segment with no slot attached to a flexible pusher member to facilitate initiation of loading of the vasoocclusive device into the sheath.

Claims

1. A sheath in combination with a detachable vasoocclusive device, comprising:

a detachable vasoocclusive device including an assembly of a flexible pusher member and a detachable embolic coil, said flexible pusher member being formed of a material for conducting energy, and a distal segment of the flexible pusher member including a tubular collar of shape memory material configured to retain said detachable embolic coil and to release said detachable embolic coil responsive to energy conducted through said flexible pusher member;

a hollow, elongated tubular member having a lower wall, an upper wall opposing said lower wall, opposing side walls, and a longitudinal interior channel; and

a longitudinal slot formed in the upper wall of said hollow, elongated tubular member and extending a first portion of a length of said hollow, elongated tubular member leaving a second portion of the length of said hollow, elongated tubular member with no slot, the slot having opposing sides with inner side surfaces extending through the upper wall of said hollow, elongated tubular member leading to the interior channel, said opposing side walls of said hollow, elongated tubular member being configured to flex outwardly to permit said detachable embolic coil, said tubular collar, and a portion of said flexible pusher member to be inserted in said longitudinal interior channel of said hollow, elongated tubular member through said longitudinal slot by a sliding pressure along said portion of said flexible pusher member, said detachable embolic coil and said tubular collar, and to be removed from said longitudinal interior channel of said hollow, elongated tubular member through said longitudinal slot by pulling said first portion of the length of said hollow, elongated tubular member off of said tubular collar, said detachable embolic coil and said portion of said flexible pusher member until said second portion of the length of said hollow, elongated tubular member with no slot is reached, said tubular member being attached to a segment of the flexible pusher member, with the sheath being able to be pulled off along the slot of the tubular member until the segment of the second portion of the tubular member without a slot is reached.

2. The combination of claim 1, wherein the upper wall of said hollow, elongated tubular member adjacent to the slot has an angled configuration on the outside surface of the hollow, elongated tubular member, and wherein the angled configuration on the outside surface of the hollow, elongated tubular member has opposing exterior surfaces meeting along said slot to form an interior angle of about 110°

to 150°

.

3. The combination of claim 2, further comprising wing members extending outwardly from the angled configuration on the outside surface of the hollow, elongated tubular member to facilitate insertion of the detachable vasoocclusive device into the sheath.

4. The combination of claim 3, wherein the wing members of the angled configuration on the outside surface of the hollow, elongated tubular member have opposing exterior surfaces forming an interior angle of about 110°

to 150°

.

5. The combination of claim 1, wherein the lower wall of the hollow, elongated tubular member is about 0.002 to 0.004 inches thick.

6. The combination of claim 1, wherein the hollow, elongated tubular member is formed from a thermoplastic material.

7. The combination of claim 1, wherein the hollow, elongated tubular member is formed from a high density polyethylene.

8. A sheath in combination with a detachable vasoocclusive device, comprising:

a detachable vasoocclusive device including an assembly of a flexible pusher member and a detachable embolic coil, said flexible pusher member being formed of a material for conducting energy, and a distal segment of the pusher member including a tubular collar of shape memory material configured to retain said detachable embolic coil and to release said detachable embolic coil responsive to energy conducted through said flexible pusher member;

a hollow, elongated tubular member having a lower wall, an upper wall opposing said lower wall, opposing side walls, and a longitudinal interior channel; and

a longitudinal slot formed in the upper wall of said hollow, elongated tubular member and extending a portion of a length of said hollow, elongated tubular member, said opposing side walls of said hollow, elongated tubular member being configured to flex outwardly and the longitudinal slot having opposing sides with inner side surfaces extending through the upper wall of said hollow, elongated tubular member leading to the interior channel permitting introduction of said detachable embolic coil, said tubular collar, and a portion of said flexible pusher member into the interior channel through said longitudinal slot, wherein the upper wall of said hollow, elongated tubular member has opposing surfaces meeting along said slot to form an angled configuration on the outside surface of the hollow, elongated tubular member adjacent to said slot, and wherein a portion of the length of said hollow, elongated tubular member includes no slot, said tubular member being attached to a segment of the flexible pusher member, with the sheath being able to be pulled off along the slot of the tubular member until the segment of the second portion of the tubular member without a slot is reached.

9. The combination of claim 8, wherein the angled configuration on the outside surface of the hollow, elongated tubular member has opposing exterior surfaces forming an interior angle of about 110°

to 150°

.

10. The combination of claim 8, wherein the lower wall of the hollow, elongated tubular member is about 0.002 to 0.004 inches thick.

11. The combination of claim 8, wherein the hollow, elongated tubular member is formed from a thermoplastic material.

12. The combination of claim 8, wherein the hollow, elongated tubular member is formed from a high density polyethylene.

13. The combination of claim 8, further comprising wing members extending outwardly from the angled configuration on the outside surface of the hollow, elongated tubular member to facilitate insertion of the detachable vasoocclusive device into the sheath.