Medical device including member that deploys in a spiral-like configuration and method

• US 8,262,703 B2
• Filed: 01/14/2009
• Issued: 09/11/2012
• Est. Priority Date: 01/31/2008
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Vivant Medical, Inc. (Johnson Controls International plc)
• Inventors: Prakash, Mani N., Nguyen, Tao D.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): Eisenberg, Rebecca E
• Application Number:
  US12/353,617
• Publication Number:
  US 20090198226A1
• Time in Patent Office: 1,336 Days
• Field of Search: 606 27- 34, 606 41- 42, 606/261, 606/78
• US Class Current: 606/261
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/1815 using microwaves
• CPC Class Codes: A61B 2018/1435 Spiral
• CPC Class Codes: A61B 2018/1475 Electrodes retractable in or deployable from a housing
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A medial device including a handle portion, and a deployable member disposed in mechanical cooperation with the handle portion is disclosed. The deployable member includes a distal tip and a bend that is disposed adjacent the distal tip. The deployable member is extendable form the handle portion such that the distal tip extends in a spiral-like configuration in response to extension of the deployable member. The spiral-like configuration includes non-equivalent radii.

Claims

1. A medical device, comprising;

a handle portion; and

a deployable member disposed in mechanical cooperation with the handle portion, the deployable member including a distal tip and a bend disposed adjacent the distal tip,

wherein the deployable member is extendable from the handle portion such that the distal tip extends in a spiral-like configuration in response to extension of the deployable member and wherein the spiral-like configuration includes non-equivalent radii and wherein a portion of the distal tip that is disposed distally of the bend is configured to deploy towards a center of the spiral-like configuration.

2. The medical device according to claim 1, wherein the deployable member is configured to deliver at least one of radiofrequency energy, microwave energy, ultrasound, cryotherapy energy and laser energy to a tissue of a patient.

3. The medical device according to claim 1, wherein the deployable member is configured to deliver energy and material to a tissue of a patient.

4. The medical device according to claim 3, wherein the deployable member is configured to deliver at least one of a material, a fluid, a chemotherapeutic agent, a saline and an electrolytic solution to a tissue of a patient.

5. The medical device according to claim 1, wherein the deployable member is configured to mark a target area within a patient.

6. The medical device according to claim 1, wherein a radius of the spiral-like configuration between the distal tip and a center line extending through the spiral-like configuration becomes smaller as the inner conductor extends beyond the outer conductor.

7. The medical device according to claim 1, wherein the deployable member is configured to extend substantially in a plane defined by the handle portion.

8. The medical device according to claim 1, wherein the deployable member is configured to extend away from a plane defined by the handle portion.

9. The medical device of claim 1, wherein a portion of the deployable member that is disposed immediately proximal of the bend and a portion of the deployable member that is disposed immediately distal of the bend form an angle of between about 5°

and about 25°

.

10. An ablation device, comprising:

a handle portion;

an inner conductor extending distally from the handle portion and including a length, a proximal portion, a distal tip and a bend disposed adjacent the distal tip; and

an outer conductor surrounding the inner conductor and extending at least partially along the length of the inner conductor, the outer conductor defining a longitudinal axis,

wherein at least the distal tip of the inner conductor is extendable distally beyond a distal-most end of the outer conductor, and wherein the distal tip extends in a spiral-like configuration in response to extension of the inner conductor, and wherein the spiral-like configuration includes non-equivalent radii, and wherein a portion of the distal tip that is disposed distally of the bend is configured to deploy towards a center of the spiral-like configuration.

11. The ablation device according to claim 10, wherein a radius of the spiral-like configuration between the distal tip and a center line extending through the spiral-like configuration becomes smaller as the inner conductor extends beyond the outer conductor.

12. The ablation device according to claim 10, wherein the outer conductor defines a plane that is parallel to the longitudinal axis and wherein the distal tip of the inner conductor is extendable substantially along the plane.

13. The ablation device according to claim 10, wherein the outer conductor defines a plane that is parallel to the longitudinal axis and wherein the distal tip of the inner conductor is extendable away from the plane.

14. The ablation device according to claim 10, wherein the distal tip of the inner conductor is biased away from the longitudinal axis.

15. The ablation device according to claim 10, wherein the inner conductor is rotatable about the longitudinal axis with respect to the handle portion.

16. The ablation device according to claim 10, further including a dielectric material disposed between the inner conductor and the outer conductor.

17. The ablation device according to claim 10, wherein at least a portion of the inner conductor is advanceable substantially along the longitudinal axis with respect to the outer conductor.

18. The ablation device of claim 10, wherein a portion of the inner conductor that is disposed immediately proximal of the bend and a portion of the inner conductor that is disposed immediately distal of the bend form an angle of between about 5°

and about 25°

.

19. A method of treating tissue, comprising:

providing an ablation device, including;

a handle portion;

an inner conductor extending distally from the handle portion and including a length, a proximal portion, a distal tip and a bend disposed adjacent the distal tip; and

an outer conductor surrounding the inner conductor and extending at least partially along the length of the inner conductor, the outer conductor defining a longitudinal axis; and

extending the distal tip of the inner conductor beyond a distal-most end of the outer conductor such that the distal tip extends in a spiral-like configuration having non-equivalent radii and such that a portion of the distal tip that is disposed distally of the bend extends towards a center of the spiral-like configuration.

20. The method according to claim 19, wherein a radius of the spiral-like configuration between the distal tip and a center line extending through the spiral-like configuration becomes smaller as the inner conductor extends beyond the outer conductor.

21. The method according to claim 19, further including a dielectric material disposed between the inner conductor and the outer conductor.

22. The method according to claim 19, wherein the outer conductor defines a plane that is parallel to the longitudinal axis and wherein the distal tip of the inner conductor is extendable away from the plane.

23. The method according to claim 19, wherein the distal tip of the inner conductor is biased away from the longitudinal axis.

24. The method according to claim 19, further including rotating the inner conductor about the longitudinal axis with respect to the handle portion.

25. The method of claim 19, wherein a portion of the inner conductor that is disposed immediately proximal of the bend and a portion of the inner conductor that is disposed immediately distal of the bend form an angle of between about 5°

and about 25°

.

26. An ablation device for treating tissue, the ablation device comprising;

an outer conductor defining a longitudinal axis;

a dielectric material retained within the outer conductor; and

an inner conductor slidably supported within the dielectric material and extendable from a distal end of the outer conductor and a distal end of the dielectric material, the inner conductor including a bend disposed adjacent a distal tip thereof,

wherein a distal portion of the inner conductor is biased to a spiral-like configuration having a varying radius along an entire length thereof,

and wherein a portion of the distal tip that is disposed distally of the bend is configured to deploy towards a center of the spiral-like configuration.

27. The ablation device of claim 26, wherein a portion of the inner conductor that is disposed immediately proximal of the bend and a portion of the inner conductor that is disposed immediately distal of the bend form an angle of between about 5°

and about 25°

.