MEDICAL DEVICE WITH EXPANSION MECHANISM

• US 20080009876A1
• Filed: 07/05/2007
• Published: 01/10/2008
• Est. Priority Date: 07/07/2006
• Status: Abandoned Application

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Inventors: Hsieh, Arthur, Sankaran, Meera
• Application Number:
  US11/773,872
• Publication Number:
  US 20080009876A1
• Time in Patent Office: Days
• US Class Current: 606/084
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2217/005 with suction drainage system

Abstract

Apparatuses and methods for accessing a tissue and expanding an apparatus within the tissue are disclosed herein. In one embodiment, an apparatus includes a first elongate body having a distal end portion that includes a plurality of cutting portions, a collapsed configuration and an expanded configuration. The plurality of cutting portions is configured to disrupt at least a portion of tissue within a biological body when the distal end portion is in the expanded configuration. A second elongate body is coupled to the first elongate body. An actuator is operatively coupled to a proximal end portion of the second elongate body and configured to bias the second elongate body such that the distal end portion of the first elongate body is in the expanded configuration. The actuator is configured to move the second elongate body such that first elongate body is in the collapsed configuration when the actuator is actuated.

Claims

1. An apparatus, comprising:

a first elongate body having a distal end portion, the distal end portion having a plurality of cutting portions, a collapsed configuration and an expanded configuration, the plurality of cutting portions configured to disrupt at least a portion of tissue within a biological body when the distal end portion is in the expanded configuration;

a second elongate body movably coupled to the first elongate body; and

an actuator operatively coupled to a proximal end portion of the second elongate body and configured to bias the second elongate body such that the distal end portion of the first elongate body is in the expanded configuration, the actuator configured to move the second elongate body such that first elongate body is in the collapsed configuration when the actuator is actuated.

2. The apparatus of claim 1, wherein the second elongate body is a rod movably disposed within a lumen of the first elongate body.

3. The apparatus of claim 1, wherein the second elongate body is a sheath defining a lumen, the first elongate body being at least partially disposed within the lumen of the sheath.

4. The apparatus of claim 1, wherein the second elongate body defines a lumen and an opening at a distal end portion of the second elongate body, the lumen configured to communicate a fluid through the opening and into an interior region defined by the distal end portion of the first elongate body.

5. The apparatus of claim 1, wherein the first elongate body defines a lumen, the second elongate body is at least partially disposed within the lumen of the first elongate body, the second elongate body has an outer diameter substantially smaller than an inner diameter of the lumen of the first elongate body.

6. The apparatus of claim 1, wherein a distal end of the first elongate body is configured to penetrate tissue within the biological body.

7. The apparatus of claim 1, wherein the plurality of arms define an interior region and terminate at a distal end of the first elongate body

8. An apparatus, comprising:

a first elongate body having a distal end portion, the distal end portion having a plurality of cutting portions, a collapsed configuration and an expanded configuration, the plurality of cutting portions configured to disrupt at least a portion of tissue within a biological body when the distal end portion is in the expanded configuration;

a second elongate body movably coupled to the first elongate body; and

an actuator coupled to a proximal end portion of the second elongate body and configured to bias the second elongate body such that the distal end portion of the first elongate body is in the collapsed configuration, the actuator configured to move the second elongate body such that the distal end portion of the first elongate body is in the expanded configuration when the actuator is actuated.

9. The apparatus of claim 8, wherein the second elongate body is a rod movably disposed within a lumen of the first elongate body.

10. The apparatus of claim 8, wherein the second elongate body is a sheath defining a lumen, the first elongate body being at least partially disposed within the lumen of the sheath.

11. The apparatus of claim 8, wherein the second elongate body defines a lumen, a distal end portion of the second elongate body defines an opening, the lumen configured to communicate a fluid through the opening and into an interior region defined by the distal end portion of the first elongate body.

12. The apparatus of claim 8, wherein the first elongate body defines a lumen, the second elongate body is at least partially disposed within the lumen of the first elongate body, the second elongate body has an outer diameter substantially smaller than an inner diameter of the lumen of the first elongate body.

13. The apparatus of claim 8, wherein a distal end of the first elongate body is configured to penetrate tissue within the biological body.

14. The apparatus of claim 8, wherein the plurality of cutting portions define an interior region and terminate at a distal end of the first elongate body.

15. The apparatus of claim 8, wherein a distal end portion of the second elongate body defines an opening, the second elongate body configured to communicate tissue fragments from an interior region defined by the distal end portion of the first elongate body, through the opening and to a location outside of the biological body.

16. An apparatus, comprising:

a sheath defining a lumen;

an elongate body at least partially disposed within the lumen of the sheath and having a distal end portion, the distal end portion of the elongate body having a collapsed configuration and an expanded configuration; and

a rod movably disposed within a lumen of the elongate body; and

an actuator coupled to the sheath and the rod, the actuator configured to bias the sheath into a first position and the rod into a first position such that the distal end portion of the elongate body is in the expanded configuration.

17. The apparatus of claim 16, wherein the rod defines a lumen, a distal end portion of the rod defines an opening, the lumen configured to communicate a fluid through the opening and into an interior region defined by the distal end portion of the elongate body.

18. The apparatus of claim 16, wherein the rod has an outer diameter substantially smaller than an inner diameter of the lumen of the elongate body.

19. The apparatus of claim 16, wherein the actuator is configured to move the sheath distally and into a second position and the rod distally and into a second position such that the distal end portion of the elongate body is moved from the expanded configuration to the collapsed configuration.

20. The apparatus of claim 16, wherein the actuator is configured to move the sheath distally such that at least a portion of the distal end portion of the elongate body is disposed within the lumen of the sheath.

21. The apparatus of claim 16, wherein the actuator is configured to move the rod distally such that the distal end portion of the elongate body is moved from the expanded configuration to the collapsed configuration.

22. The apparatus of claim 16, wherein the elongate body has a tapered distal end configured to penetrate tissue.

23. The apparatus of claim 16, wherein the distal end portion of the elongate body has a plurality of arms configured to disrupt at least a portion of tissue within a biological body when the distal end portion of the elongate body is rotated while disposed within the biological body.

24. The apparatus of claim 16, wherein the distal end portion of the elongate body is configured to be inserted into a biological body, the distal end portion of the elongate body defines an interior region, the rod defines a lumen, a distal end portion of the rod defines an opening, the lumen is configured to communicate tissue fragments from within the interior region defined by the distal end portion of the elongate body to a location exterior to the biological body.

25. A method, comprising:

inserting a medical device in a collapsed configuration at least partially into a biological body, the medical device having a sheath and an elongate body at least partially disposed within a lumen of the sheath;

after the inserting, moving the sheath proximally such that a distal end portion of the elongate body is disposed outside of the lumen of the sheath and within the biological body, the distal end portion of the elongate body having a plurality of cutting portions; and

rotating the medical device such that the cutting portions of the distal end portion of the elongate body disrupt at least a portion of tissue within the biological body.

26. The method of claim 25, further comprising:

moving a rod disposed within a lumen of the elongate body proximally such that the distal end portion of the elongate body is moved to an expanded configuration.

27. The method of claim 25, further comprising:

simultaneously with moving the sheath, moving a rod disposed within a lumen of the elongate body proximally such that the distal end portion of the elongate body is moved to an expanded configuration.

28. The method of claim 25, further comprising:

moving a rod disposed within a lumen of the elongate body proximally such that the distal end portion of the elongate body is moved to an expanded configuration and the distal end portion of the elongate body distracts at least a portion of the tissue.

29. The method of claim 25, further comprising:

after the rotating, moving a rod disposed within a lumen of the elongate body distally such that the distal end portion of the elongate body is moved to a collapsed configuration.

30. The method of claim 25, further comprising:

after the rotating, moving a rod disposed within a lumen of the elongate body distally such that the distal end portion of the elongate body is moved to a collapsed configuration; and

moving the sheath distally until at least a portion of the distal end portion of the elongate body is disposed within the lumen of the sheath.

31. The method of claim 25, further comprising:

moving a rod disposed within a lumen of the elongate body proximally such that the distal end portion of the elongate body is moved to an expanded configuration, the rod defines a lumen, a distal end portion of the rod defines an opening; and

injecting a fluid through the lumen of the rod and into an interior region defined by the distal end portion of the elongate body.

32. The method of claim 25, further comprising:

moving a rod disposed within a lumen of the elongate body proximally such that the distal end portion of the elongate body is moved to an expanded configuration, the rod defines a lumen, a distal end portion of the rod defines an opening; and

suctioning tissue fragments from an interior region defined by the distal end portion of the elongate body through the lumen of the rod and to a location outside of the biological body.

33. The method of claim 25, further comprising:

during the inserting, penetrating at least a portion of tissue within the biological body with a distal end of the elongate body

34. The method of claim 25, wherein the biological body is a vertebra.

35. The method of claim 25, wherein the biological body is an intervertebral disc.