Intervertebral Disc Puncture and Treatment System

• US 20070282300A1
• Filed: 06/05/2006
• Published: 12/06/2007
• Est. Priority Date: 06/05/2006
• Status: Abandoned Application

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Serhan, Hassan, Attawia, Mohamed, O'Neil, Michael, Lee, Cynthia
• Application Number:
  US11/422,222
• Publication Number:
  US 20070282300A1
• Time in Patent Office: Days
• US Class Current: 604/506
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00026 Conductivity or impedance, e.g. of tissue
• CPC Class Codes: A61B 2017/00039 Electric or electromagnetic phenomena other than conductivity, e.g. capacity, inductivity, Hall effect
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/0262 with a provision for protecting nerves
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/444 for replacing the nucleus pulposus
• CPC Class Codes: A61F 2002/4627 with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument

Abstract

A pre-assembled, telescoping needle system comprising an outer needle surrounding a finer gauge needle which, after percutaneous penetration by the outer needle, extends to penetrate the intervertebral disc into which the injectable is to be delivered.

Claims

1. A method of delivering a therapeutic agent to a patient having an intervertebral disc having an annulus fibrous and a nucleus pulposus, comprising the steps of:

a) providing a therapeutic delivery system, comprising;

i) an outer needle having a distal end, and

ii) an inner needle received within the outer needle and having a distal end,

b) inserting the outer needle into the patient at a location dorsal of the intervertebral disc,

c) advancing the outer needle to abut the annulus fibrosus, and

d) advancing only the inner needle into the nucleus pulposus.

2. The method of claim 1 wherein the inner needle has an outer surface having i) a first proximal outer diameter, and ii) a second distal outer diameter, wherein the first proximal outer diameter is greater than the second distal outer diameter.

3. The method of claim 1 wherein the delivery system further comprises:

iii) a syringe in fluid connection with the inner needle, wherein the syringe contains a therapeutic agent.

4. The method of claim 3 further comprising the step of:

e) actuating the syringe to inject the therapeutic agent into the nucleus pulposus.

5. The method of claim 3 further comprising the step of:

e) removing the inner needle from the outer needle, and

f) inserting a second inner needle into the outer needle.

6. A needle system for delivery of a therapeutic agent, comprising:

a) an outer needle having an outer surface having a transverse throughhole, and a detent provided in the throughhole, the detent having a projection extending inwardly, and

b) an inner needle having an outer surface having a plurality of axially spaced grooves,

wherein the projection of the detent is shaped to be received in the plurality of axially spaced grooves.

7. The system of claim 6 wherein the outer surface of the inner needle has a first proximal outer diameter upon which the grooves are located and a second distal outer diameter, wherein the first proximal outer diameter is greater than the second distal outer diameter.

8. The system of claim 7 wherein the system further comprises:

c) an annular plug disposed within a distal end of the outer needle and adapted to fit between the inner and outer needles.

9. The system of claim 6 further comprising:

c) a syringe in fluid connection with the inner needle, wherein the syringe contains a therapeutic agent.

10. The system of claim 6 wherein the system is pre-assembled.

11. The system of claim 6 wherein the outer surface of the inner needle has a plurality of depth markings.

12. A needle system for delivery of a therapeutic agent, comprising:

a) an outer needle having an inner surface having a first thread, and

b) an inner needle having an outer surface having a second thread,

wherein the first thread is adapted to mate with the second thread.

13. The system of claim 12 wherein the outer surface of the inner needle has a first proximal outer diameter upon which the second thread is located and a second distal outer diameter, wherein the first proximal outer diameter is greater than the second distal outer diameter.

14. The system of claim 13 wherein the system further comprises:

c) an annular plug disposed within a distal end of the outer needle and adapted to fit between the inner and outer needles.

15. The system of claim 12 further comprising:

c) a syringe in fluid connection with the inner needle, wherein the syringe contains a therapeutic agent.

16. The system of claim 12 wherein the system is pre-assembled.

17. The system of claim 12 wherein the outer surface of the inner needle has a plurality of depth markings.

18. A needle system for delivery of a therapeutic agent, comprising:

a) an outer needle having an inner surface, and

b) an inner needle having an outer surface,

wherein one of the needles has a tab extending from its surface, the other needle has a channel in its surface, and

wherein the tab is received in the channel.

19. The needle system of claim 18 wherein the channel has a plurality of alternating axial portions and lateral portions.

20. The needle system of claim 18 wherein the inner surface of the outer needle has the tab and the outer surface of the inner needle has the channel.

21. The needle system of claim 18 wherein the inner surface of the outer needle has the channel and the outer surface of the inner needle has the tab.

22. The system of claim 18 wherein the outer surface of the inner needle has a first proximal outer diameter upon which the tab or channel is located and a second distal outer diameter, wherein the first proximal outer diameter is greater than the second distal outer diameter.

23. The system of claim 22 wherein the system further comprises:

c) an annular plug disposed within a distal end of the outer needle and adapted to fit between the inner and outer needles.

24. The system of claim 18 further comprising:

c) a syringe in fluid connection with the inner needle, wherein the syringe contains a therapeutic agent.

25. The system of claim 18 wherein the system is pre-assembled.

26. The system of claim 18 wherein the outer surface of the inner needle has a plurality of depth markings.