Medical Retrieval Devices and Methods

• US 20070288038A1
• Filed: 06/12/2007
• Published: 12/13/2007
• Est. Priority Date: 06/13/2006
• Status: Abandoned Application

• Current Assignee: Frank Bimbo
• Original Assignee: Frank Bimbo
• Inventors: Bimbo, Frank
• Application Number:
  US11/761,721
• Publication Number:
  US 20070288038A1
• Time in Patent Office: Days
• US Class Current: 606/127
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/2932 Transmission of forces to jaw members
• CPC Class Codes: A61B 2017/2937 with flexible part
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points

Abstract

A medical retrieval device may include a first portion having proximal and distal ends, a second portion having proximal and distal ends, and a grasping portion. The second portion may surround at least a portion of the first portion. The grasping portion may be movable between retracted and extended configurations. The grasping portion may include a proximal end, a free distal end, and a plurality of grasping members. Each grasping member may include a plurality of grasping elements extending between the proximal and free distal ends of the grasping portion. At least one of the grasping elements may be connected to the distal end of the first portion and extend to the free end, and at least one other grasping element may be connected to the distal end of the second portion and extend to the free end. Relative movement between the first and second portions may cause the grasping portion to move between the retracted and extended configurations.

Claims

1. A medical retrieval device, comprising:

a first portion having a proximal end and a distal end;

a second portion surrounding at least a portion of the first portion, the second portion having a proximal end and a distal end;

a grasping portion movable between a retracted configuration and an extended configuration, the grasping portion comprising

a proximal end,

a free distal end, and

a plurality of grasping members, each grasping member comprising a plurality of grasping elements extending between said proximal and free distal ends of the grasping portion, at least one of said grasping elements being integral with said distal end of the first portion and extending to said free end, and at least one other of said grasping elements being connected to said distal end of the second portion and extending to said free end,

wherein relative movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

2. The device of claim 1, wherein the second portion comprises a sheath.

3. The device of claim 2, wherein the first portion defines at least one lumen.

4. The device of claim 1, wherein relative rotational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

5. The device of claim 1, wherein relative translational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

6. The device of claim 1, wherein the grasping portion is external to the inside diameter of the first portion in the retracted and extended configurations.

7. The device of claim 1, wherein said relative movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations without relative translational motion between said free distal end and the first and second portions.

8. A medical retrieval device, comprising:

a first portion having an inside diameter, a proximal end, and a distal end; and

a second portion surrounding at least a portion of the first portion, the second portion comprising a grasping portion movable between a retracted configuration and an extended configuration, the grasping portion being external to the inside diameter of the first portion in the retracted and extended configurations, the grasping portion extending distally from the distal end of the first portion in said retracted and extended configurations and terminating in a free distal end,

wherein relative movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

9. The device of claim 8, wherein the second portion comprises a sheath.

10. The device of claim 9, wherein the first portion defines at least one lumen.

11. The device of claim 10, wherein relative rotational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

12. The device of claim 10, wherein relative translational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

13. The device of claim 10, wherein the grasping portion comprises:

a proximal end;

a free distal end; and

a plurality of grasping members, each grasping member comprising a plurality of grasping elements extending between said proximal and free distal ends of the grasping portion, at least one of said grasping elements being connected to said distal end of the first portion and extending to said free end, and at least one other of said grasping elements being connected to said distal end of the second portion and extending to said free end.

14. The device of claim 10, wherein said relative movement between the sheath and the outer member causes the grasping portion to move between said retracted and extended configurations without relative translational motion between said free distal end and the first and second portions.

15. A medical retrieval device, comprising:

a first portion having an inside diameter, a proximal end, and a distal end; and

a second portion surrounding at least a portion of the first portion, the second portion comprising a grasping portion movable between a retracted configuration and an extended configuration, the grasping portion extending distally from the distal end of the second portion in said retracted and extended configurations and terminating in a free distal end,

wherein relative movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations without relative translational motion between said free distal end and the first and second portions.

16. The device of claim 15, wherein the second portion comprises a sheath.

17. The device of claim 16, wherein the first portion defines at least one lumen.

18. The device of claim 15, wherein relative rotational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

19. The device of claim 15, wherein relative translational movement between the first and second portions causes the grasping portion to move between said retracted and extended configurations.

20. The device of claim 15, wherein the grasping portion is external to the inside diameter of the first portion in the retracted and extended configurations.