Mechanical clot treatment device

• US 7,875,050 B2
• Filed: 02/22/2002
• Issued: 01/25/2011
• Est. Priority Date: 09/30/1997
• Status: Expired due to Term

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Target Therapeutics, Inc. (Boston Scientific Corporation)
• Inventors: Carrison, Harold F, Samson, Gene
• Primary Examiner(s): Barrett; Thomas C
• Assistant Examiner(s): Araj; Michael J
• Application Number:
  US10/082,492
• Publication Number:
  US 20020082558A1
• Time in Patent Office: 3,259 Days
• Field of Search: 606/114, 606/127, 606/128, 606/200, 606/198, 606/157, 606/158, 606/188, 60410101-10103, 604/101.05
• US Class Current: 606/200
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22045 fixed to the catheter; guiding tip
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0071 spherical

Abstract

An embolism treatment device includes an elongated core wire having a coil tip coupled to the distal end of the core wire and a cage assembly substantially coaxial to the core wire, having a first deployment shape and a second expanded shape. The core wire is freely moveable axially through the cage assembly. The device additionally includes an inner coil surrounding the core wire within the cage assembly and an actuator element, having a first position and a second position, located proximally to the cage assembly, wherein when the actuator element is in the first position, the cage assembly is in the first deployment shape and when the actuator element is in the second position, the cage assembly is in the second expanded shape.

Claims

1. An embolism treatment device comprising:

an elongated core wire having a distal end and a proximal end;

a cage assembly including a proximal cage connected to a distal cage, the cage assembly having a distal end, a proximal end, a first deployment shape wherein both the proximal cage and the distal cage are in a deployment configuration, and a second expanded shape wherein both the proximal cage and the distal cage are in an expanded configuration, wherein the second expanded shape is different from the first deployment shape and wherein the cage assembly is substantially coaxial to the elongated core wire;

a tubular member coupled to the distal end of the cage assembly, wherein the tubular member surrounds a distal portion of the core wire; and

an actuator element, having a first position and a second position, located proximally to the cage assembly and substantially coaxial about the core wire, wherein when the actuator element is in the first position, the cage assembly is in the first deployment shape and when the actuator element is in the second position, the cage assembly is in the second expanded shape;

wherein the core wire is freely moveable axially through the cage assembly;

wherein the proximal cage and the distal cage are separated by a separation member.

2. The embolism treatment device in claim 1, wherein the tubular member is a bushing.

3. The embolism treatment device in claim 1, wherein the tubular member is a thermoplastic.

4. The embolism treatment device in claim 1, further comprising an inner coil surrounding the elongated core wire within the cage assembly.

5. The embolism treatment device in claim 4, wherein the inner coil is a marker coil.

6. The embolism treatment device of claim 1, wherein the distal cage includes a plurality of petal shaped wires.

7. The embolism treatment device of claim 6, wherein the plurality of petal shaped wires has a distal rake.

8. An embolism treatment device comprising:

an elongated core wire having a distal end and a proximal end;

a cage assembly including a proximal cage connected to a distal cage, the cage assembly having a distal end, a proximal end, a first deployment shape, and a second expanded shape wherein both the proximal cage and the distal cage are in an expanded configuration, wherein the second expanded shape is different from the first deployment shape and wherein the cage assembly is substantially coaxial to the elongated core wire;

an inner coil surrounding the core wire within the cage assembly; and

an actuator element, having a first position and a second position, located proximally to the cage assembly and substantially coaxial about the core wire, wherein when the actuator element is in the first position, the cage assembly is in the first deployment shape and when the actuator element is in the second position, the cage assembly is in the second expanded shape;

wherein the proximal cage and the distal care are separated by a separation member.

9. The embolism treatment device in claim 8, wherein the inner coil is a marker coil.

10. The embolism treatment device in claim 8, wherein the inner coil is prevented from passing distally on the core wire.

11. The embolism treatment device in claim 8, further comprising a tubular member coupled to the distal end of the cage assembly and surrounding the core wire.

12. The embolism treatment device in claim 11, wherein the tubular member is firmly placed on the core wire.

13. The embolism treatment device in claim 8, wherein the core wire is freely moveable axially through the cage assembly.

14. The embolism treatment device of claim 8, wherein the distal cage includes a plurality of petal shaped wires.

15. The embolism treatment device of claim 14, wherein the plurality of petal shaped wires has a distal rake.