Method and device for controlled delivery of medical devices
A device that uses an anatomic landmark or fiduciary point to establish a point of origin for device orientation in space is provided. The device controls the direction and depth of delivery of a needle, wire, trocar or cannula utilized for diagnostic or therapeutic intervention. The device guides the percutaneous delivery of a needle, wire, trocar or cannula to a target spatial location on or within tissue.
1. A device that guides the percutaneous delivery of a medical device to a target spatial location on or within tissue, the device comprising:
a circular positioning ring comprising a vertical receiving channel and a horizontal receiving channel;
a rotational element comprising a cap and a flange received by and engaged with the vertical receiving channel and horizontal receiving channel, respectively, where the vertical receiving channel and horizontal receiving channel meet at an intersection;
a directional element mated with the cap of the rotational element and configured to be operably coupled to the circular positioning ring; and
a coupling mechanism comprising a base portion and a shaft having an end mated to the cap of the rotational element, where a rotational force applied to the rotational element causes the flange to rotate in the horizontal receiving channel.
2. The device of claim 1 , wherein the horizontal receiving channel includes at least one stop configured to stop the flange from further rotation.
3. The device of claim 1 , wherein the circular positioning ring is configured to circumscribe a medial malleolus of a patient.
4. The device of claim 3 , wherein the circular positioning ring includes a base having an adhesive thereon configured to secure the device over the medial malleolus.
5. The device of claim 3 , wherein a collar extends radially from the circular positioning ring, the collar configured to circumscribe a surface of a foot, an ankle or a heel to center the device on the medial malleolus.
6. The device of claim 1 , wherein the coupling mechanism base portion is cone-shaped and configured to be positioned externally over a medial malleolus.
7. The device of claim 1 , wherein the shaft is integrally formed with the coupling mechanism base portion.
8. The device of claim 1 , wherein the shaft is threadably received by the coupling mechanism base portion.
9. The device of claim 8 , wherein the cap of the rotational element includes an internal threaded lumen.
10. The device of claim 9 , wherein the shaft is dimensioned such that an outer diameter is less than an inner diameter of the cap.
11. The device of claim 1 , wherein the rotational element is cone-shaped.
12. The device of claim 1 , wherein the rotational element includes a first outer diameter adjacent the flange and the cap includes a cap outer diameter that is less than the first outer diameter such that the rotational element tapers from the first outer diameter to the cap outer diameter.
13. The device of claim 1 , wherein the coupling mechanism shaft includes a receiving lumen therethrough configured to receive a needle, needle guide, or driver device.
14. The device of claim 1 , wherein the directional element includes a vertical shaft, an adjustable positioning arm and a needle guide assembly.
15. The device of claim 14 , wherein the vertical shaft defines a lumen therethrough, the lumen having an inner diameter that is greater than an outer diameter of the cap.
16. The device of claim 15 , wherein the lumen is configured to extend a length of the vertical shaft.
17. The device of claim 15 , wherein the lumen is configured to be greater than or equal to the vertical depth of the cap.
18. The device of claim 14 , wherein the adjustable positioning arm is perpendicular to a longitudinal axis of the vertical shaft.
19. The device of claim 14 , wherein the adjustable positioning arm is configured to be positioned to a plurality of acute angles offset from a longitudinal axis of shaft.
20. The device of claim 14 , wherein the needle guide assembly is configured to receive a needle advance device, the needle advance device configured to linearly control advancement and delivery of a needle through a surface of skin proximate the medial malleolus to a target depth within tissue.