Implanting device and method of using same

• US 20040199140A1
• Filed: 04/03/2003
• Published: 10/07/2004
• Est. Priority Date: 04/03/2003
• Status: Active Grant

• Current Assignee: ENDO Operations Limited (Endo, Inc.)
• Original Assignee: Indevus Pharmaceuticals, Inc. (Endo International PLC)
• Inventors: Teirney, David S., Rue, Matthew L.
• Granted Patent: US 7,214,206 B2
• Time in Patent Office: Days
• US Class Current: 604/506
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 37/0069 Devices for implanting pellets, e.g. markers or solid medicaments for introducing of radioactive sources for interstitial radiation therapy, i.e. brachytherapy A61N5/1027

Abstract

A device for inserting implantable objects beneath the skin of a patient includes a handle for grasping the device and a base connected to the handle. The base comprises a post, a cannula, and a flexible actuator positioned in an angled track. The cannula is positioned coaxially around and is longitudinally slidable over the post from an extended position, where an implantable object is retained in the cannula, to a retracted position, where the implantable object is released from the cannula. A flexible actuator positioned on an angled track in the base is slidably engaged with a boss on the cannula and is used to move the cannula from an extended position to a retracted position to release the implantable object from the cannula; the actuator flexes between a locked and an unlocked position. The angled track provides for control of the release of the implantable object.

Claims

1. A device for implanting at least one object beneath the skin of a patient comprising:

a handle for grasping the device during insertion of an object, the handle having a distal end, a proximal end, and an angled track formed on the handle;

a base connected to the handle, the base comprising;

a post longitudinally fixed to the handle, the post extending from the distal end of the handle;

a hollow cannula positioned coaxially around and longitudinally slidable over the post from an extended position, in which at least one object is retained in the cannula, to a retracted position, in which at least one object is released from the cannula;

and a flexible actuator slidably engaged to the cannula to move the cannula from the extended position to the retracted position to release the object from the cannula, wherein the actuator flexes between a locked and an unlocked position.

2. The device of claim 1 further comprising one or more implantable objects.

3. The device of claim 1, wherein the implantable objects comprise one or more of either therapeutics, pharmaceuticals, or microencapsulated sensors.

4. The device of claim 1 further comprising a cartridge removably mounted and parallel to a central bore of said cannula and a means for moving objects into the cannula for delivery upon retraction of said cannula.

5. The device of claim 1 wherein the angled track is formed from two opposing recessed track walls angled with respect to the post.

6. The device of claim 1 wherein the angled track is either linear or curvilinear.

7. The device of claim 1 wherein the angled track has a stop at the distal portion that permits securing of the actuator and locks the cannula in a loaded position.

8. The device of claim 1 wherein the flexible actuator comprises a button, a boss channel, at least two guide posts, a guide, and a tab extending upwardly and non-parallel from the guide posts attached to the cannula, wherein the boss channel engages the guide posts and permits a pulling or pushing force to be exerted on the cannula, for extension or retraction, as the flexible actuator tab is moved by moving the button along the angled track.

9. The device of claim 1 wherein pressing the flexible actuator in the distal position of the angled track engages a locking portion of the actuator to prevent retraction of the cannula.

10. The device of claim 9 wherein the flexible actuator is released from the locked position by pressing the actuator.

11. The device of claim 1 wherein the base includes a bottom surface that is substantially planar and parallel to the cannula.

12. The device of claim 1, wherein the cannula includes a tip at the distal end that is formed from at least one beveled angle of between 30 and 45 degrees.

13. The device of claim 1 wherein the cannula includes a tip at the distal end that is formed at a sharp point of 27 degrees.

14. The device of claim 1, wherein the cannula includes a depth indicating marker.

15. A method of inserting an object beneath the skin of a patient, comprising the steps of:

inserting a hollow cannula of an implanting device beneath the skin of a patient, where at least one implantable object is positioned within the cannula;

using a flexible actuator that is attached to the implanting device along an angled track that is slidably engaged to the cannula to manually retract the cannula over the implantable object and leave the implantable object beneath the skin;

withdrawing the implanting device from the patient.

16. The method of claim 15, further comprising the step of pressing the flexible actuator in the distal position of the angled track to engages a locking portion of the actuator to prevent retraction of the cannula;

17. The method of claim 15, further comprising the step of pressing the flexible actuator to release the actuator from the locked position.

18. A system for implanting an object beneath the skin of a patient, comprising:

means for creating an incision into the skin of the patient;

means for maintaining a sterile environment;

means for placing the implantable object beneath the skin of the patient, comprising an angled means for insertion beneath the skin and a means for withdrawing the angled means for insertion while leaving the implantable object beneath the skin;

angled means for manually controlling the insertion of the implantable object to prevent unnecessary damage to patient tissue from force.

Note from Matt Rue—

nothing about handle design, is this significant?