STEERABLE VERTEBROPLASTY SYSTEM WITH CAVITY CREATION ELEMENT

• US 20090131867A1
• Filed: 02/11/2008
• Published: 05/21/2009
• Est. Priority Date: 11/16/2007
• Status: Abandoned Application

• Current Assignee: Osseon LLC (Merit Medical Systems, Inc.)
• Original Assignee: Osseon LLC (Merit Medical Systems, Inc.)
• Inventors: Lau, Jan R., Lyster, Michael T., Threlkeld, Judson E., Liu, Y. King
• Application Number:
  US12/029,428
• Publication Number:
  US 20090131867A1
• Time in Patent Office: Days
• US Class Current: 604/96.10
• CPC Class Codes: A61B 17/8805 for introducing fluid filler into bone or extracting it A61B17/7097, A61B17/8833 take precedence
• CPC Class Codes: A61B 17/8811 characterised by the introducer tip, i.e. the part inserted into or onto the bone
• CPC Class Codes: A61B 17/8816 characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
• CPC Class Codes: A61B 17/8827 with filtering, degassing, venting or pressure relief means
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61M 25/0054 with regions for increasing flexibility
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0136 Handles therefor
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 29/00 Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

Methods and devices for augmenting bone, such as in performing vertebroplasty are disclosed. A bone cement injection needle is provided, having a laterally deflectable distal end. The distal end may be provided with a cavity creation element, such as an inflatable balloon. Systems are also disclosed, including the steerable injection needle, introducer and stylet. The system may additionally include a cement delivery gun, one-time use disposable cement cartridges and a cement mixing chamber. Methods are also disclosed.

Claims

1. A steerable vertebroplasty device, comprising:

an elongate, tubular body, having a proximal end, a distal end, and a central lumen extending therethrough;

a deflectable zone on the distal end of the tubular body, deflectable through an angular range;

a handle on the proximal end of the tubular body; and

a deflection control on the handle; and

a cavity creating element carried by the deflectable zone.

2. A steerable vertebroplasty device as in claim 1, wherein the deflection control comprises a rotatable element.

3. A steerable vertebroplasty device as in claim 1, wherein the distal end comprises a distally facing exit port in communication with the central lumen.

4. A steerable vertebroplasty device as in claim 1, wherein the distal end comprises a laterally facing exit port in communication with the central lumen.

5. A steerable vertebroplasty device as in claim 1, further comprising an actuator extending axially between the deflection control and the deflectable zone.

6. A steerable vertebroplasty device as in claim 5, wherein the actuator comprises an axially moveable element.

7. A steerable vertebroplasty device as in claim 1, wherein the cavity creating element comprises an inflatable balloon.

8. A steerable vertebroplasty device as in claim 7, wherein the inflatable balloon is disposed proximally of an exit port on the tubular body.

9. A steerable vertebroplasty device as in claim 1, wherein the tubular body comprises a proximal zone and a distal, deflectable zone separated by a transition, and the transition is at least about 15% of the length of the tubular body from the distal end.