LOW COST LOW PROFILE INFLATABLE BONE TAMP

• US 20120259375A1
• Filed: 04/08/2011
• Published: 10/11/2012
• Est. Priority Date: 04/08/2011
• Status: Active Grant

• Current Assignee: Kyphon SARL (Medtronic Plc)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Druma, Calin, Chabansky, Bruce
• Granted Patent: US 9,554,840 B2
• Time in Patent Office: Days
• US Class Current: 606/86.R
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/8822 characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 2017/320048 Balloon dissectors
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

An inflatable bone tamp for performing a minimally invasive surgical procedure includes a shaft having a primary region and a reduced diameter region, and an inflatable structure surrounding at least a portion of the reduced diameter region. The reduced diameter region of the shaft allows the deflated size of the inflatable structure to be minimized, while at the same time eliminating the need for the conventional dual lumen balloon catheter construction.

Claims

1. A device for performing a surgical procedure, the device comprising:

an elongate shaft, the elongate shaft comprising a primary region having a first diameter and a secondary region having a second diameter, the first diameter being greater than the second diameter; and

an inflatable structure coupled to a distal end region of the elongate shaft, wherein the secondary region extends at least partially within the inflatable structure.

2. The device of claim 1, wherein the elongate shaft defines an interior lumen, the interior lumen being in communication with an interior volume of the inflatable structure.

3. The device of claim 2, wherein a distal end region of the inflatable structure is coupled to a distal end region of the secondary region.

4. The device of claim 3, wherein a proximal end region of the inflatable structure is coupled to the primary region.

5. The device of claim 3, wherein a proximal end region of the inflatable structure is coupled to a proximal end region of the secondary region.

6. The device of claim 3 wherein the elongate shaft further comprises a transition region between the primary region and the secondary region.

7. The device of claim 6, wherein a proximal end region of the inflatable structure is coupled to the transition region.

8. The device of claim 6, wherein the transition region comprises a tapered profile.

9. The device of claim 3, wherein the secondary region comprises at least one opening defining a flow path between the interior lumen of the elongate shaft and the interior volume of the inflatable structure.

10. The device of claim 1, wherein the elongate shaft comprises at least one of silicone, polyvinyl chloride, latex rubber, polyethylene, polyurethane, Nitinol, and stainless steel.

11. The device of claim 2, further comprising a stylet sized to fit within the interior lumen of the elongate shaft.

12. A system for performing a surgical procedure, the system comprising:

a cannula defining an access lumen; and

an inflatable bone tamp, the inflatable bone tamp comprising a shaft having a primary region and a reduced diameter region, and an inflatable structure, wherein the inflatable structure surrounds at least a portion of the reduced diameter region, and further wherein the inflatable structure, when deflated about the reduced diameter region, is sized to, fit through the access lumen.

13. The system of claim 12, wherein a distal end region of the inflatable structure is attached to a distal end region of the reduced diameter region.

14. The system, of claim 13, wherein a proximal end region of the inflatable structure is attached to a distal end region of the primary region.

15. The system of claim 13, wherein the shaft defines an inner inflation lumen in communication with an interior region of the inflatable structure.

16. The system of claim 15, further comprising a stylet sized to fit within the inner inflation lumen of the shaft.

17. The system of claim 12, further comprising instructions for performing a surgical procedure using the cannula and the inflatable bone tamp.

18. The system of claim 12, further comprising:

a second cannula defining a second access lumen; and

a second inflatable bone tamp, the second inflatable bone tamp comprising a shaft having a second primary region and a second reduced diameter region, and a second inflatable structure, wherein the second inflatable structure surrounds at least a portion of the reduced diameter region, and further wherein the second inflatable structure, when deflated about the second reduced diameter region, is sized to fit through the second access lumen.

19. A method comprising:

establishing an access path to a bone;

driving an inflatable structure through the access path using an elongate shaft, wherein the shaft includes a reduced diameter region positioned at least partially within the inflatable structure;

inflating the inflatable structure to manipulate the bone;

deflating the inflatable structure about the reduced diameter region; and

withdrawing the inflatable structure through the access path.

20. The method of claim 20, wherein establishing an access path to a bone comprises positioning a cannula such that an interior lumen of the cannula provides the access path