Inflatable bone tamp with flow control and methods of use

Patent metadata

Field	Value
Publication number	US-10398484-B2
Application number	US-201615189787-A
Country	US
Kind code	B2
Filing date	Jun 22, 2016
Priority date	Jun 22, 2016
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

An inflatable bone tamp is provided that includes a shaft defining a lumen. A balloon is coupled to the shaft such that a material can flow through the lumen and into the balloon to inflate the balloon. A connector is coupled to the shaft. The connector includes a first port and a second port. The ports are in communication with the lumen. A flow control device is coupled to the first port. The flow control device controls flow of the material through the first port and into the lumen. A damper is coupled to the second port. The damper controls pressure within the inflatable bone tamp when pressure within the inflatable bone tamp reaches a threshold. Kits, systems and methods are disclosed.

First claim

What is claimed is:

1. An inflatable bone tamp comprising:
a shaft extending along an axis between a proximal end and an opposite distal end, the shaft defining a lumen, and the shaft including an outer surface, a plurality of openings therein adjacent the distal end of the shaft, and an end wall extending transverse to the axis at the distal end of the shaft;
a cannula that surrounds the shaft between the proximal end and the distal end of the shaft, the cannula including inner surface, the inner surface of the cannula and the outer surface of the shaft defining a passageway;
a balloon comprising a distal end engaging the distal end of the shaft, and a proximal end engaging a distal end of the cannula;
a connector coupled to the shaft, the connector comprising a first port, a second port, and a third port, the first and second ports being in communication with the lumen, and the third port being in communication with the passageway; and
a flow control device coupled to the first port that controls flow of a material through the first port and into the lumen; and
a damper coupled to the second port that controls pressure within the inflatable bone tamp when pressure within the inflatable bone tamp reaches a threshold;
wherein the material can flow from the first port, through the lumen, through the plurality of openings, and into the balloon to inflate the balloon, and the material can flow from the balloon, through the passageway, and exit the third port to deflate the balloon.

2. The inflatable bone tamp recited in claim 1 , wherein the first port is positioned between the second port and the third port.

3. The inflatable bone tamp recited in claim 1 , wherein the first port is coaxial with the lumen and the second and third ports each extend transverse to the lumen.

4. An inflatable bone tamp comprising:
a shaft including an inner surface, an outer surface, and a plurality of openings therein adjacent a distal end of the shaft, the inner surface of the shaft defining a lumen;
a cannula that surrounds the shaft, the cannula including an inner surface, the inner surface of the cannula and the outer surface of the shaft defining a passageway;
a balloon including an interior and being coupled to the shaft at the distal end of the shaft and coupled to the cannula at a distal end of the cannula, the lumen fluidly communicating with the interior of the balloon via the plurality of openings, and the interior of the balloon communicating with the passageway;
a connector coupled to the shaft, the connector comprising a first port, a second port, a third port, and a valve coupled to the third port, the first and second ports being in communication with the lumen;
a flow control device coupled to the first port that controls flow of a material through the first port and into the lumen; and
a damper coupled to the second port that controls pressure within the inflatable bone tamp when pressure within the inflatable bone tamp reaches a threshold;
wherein the material can flow through the lumen, through the plurality of openings, and into the interior of the balloon to inflate the balloon, and flow from the interior of the balloon through the passageway to deflate the balloon, and
wherein the valve is configured for removal of the material from the passageway through the third port to facilitate deflation of the balloon.

5. The inflatable bone tamp recited in claim 1 , wherein the flow control device comprises a tapered channel.

6. The inflatable bone tamp recited in claim 1 , wherein the flow control device comprises a channel that is tapered from a proximal end of the flow control device to a distal end of the flow control device.

7. The inflatable bone tamp recited in claim 1 , wherein the flow control device comprises a channel that is tapered from a proximal end of the flow control device to a midpoint of the flow control device and from a distal end of the flow control device to the midpoint.

8. The inflatable bone tamp recited in claim 1 , wherein the flow control device comprises a tapered channel that is coaxial with the lumen.

9. The inflatable bone tamp recited in claim 1 , wherein a proximal end of the balloon is coupled to the distal end of the cannula and a distal end of the balloon is coupled to the distal end of the shaft.

10. The inflatable bone tamp recited in claim 1 , wherein the material from the lumen moves through the second port and into the damper.

11. The inflatable bone tamp recited in claim 1 , wherein the valve comprises a removable cap that is positioned over a portion of the valve when the balloon is being inflated and is removed from the portion of the valve when the balloon is being deflated.

12. The inflatable bone tamp recited in claim 11 , wherein the removable cap is a Luer cap.

13. The inflatable bone tamp recited in claim 1 , wherein the damper is a check valve.

14. The inflatable bone tamp recited in claim 1 , wherein the damper comprises a spring that compresses when pressure within the inflatable bone tamp reaches the threshold.

15. The inflatable bone tamp recited in claim 1 , wherein the shaft is a polymer tube.

16. The inflatable bone tamp recited in claim 1 , wherein the first port is positioned between the second port and the third port.

17. The inflatable bone tamp recited in claim 1 , wherein the first port is coaxial with the lumen and the second and third ports each extend transverse to the lumen.

18. The inflatable bone tamp recited in claim 1 , wherein the flow control device is coupled to the first port such that a channel of the flow control device is in communication with the lumen.

19. An inflatable bone tamp comprising:
a shaft including an inner surface, an outer surface, and a plurality of openings therein adjacent a distal end of the shaft, the inner surface of the shaft defining a lumen;
a cannula that surrounds the shaft, the cannula including an inner surface, the inner surface of the cannula and the outer surface of the shaft defining a passageway that is in communication with the lumen;
a balloon having a proximal end that is coupled to the cannula and a distal end that is coupled to the shaft such that a material can flow through the lumen, through the plurality of openings, and into the balloon to facilitate inflation of the balloon, and the material can flow from the balloon, and through the passageway to facilitate deflation of the balloon;
a connector coupled to the shaft, the connector comprising a first port, a second port, and a third port, the ports each being in communication with one of the lumen and the passageway;
a flow control device comprising a tapered channel, the flow control device being coupled to the first port to control flow of the material through the tapered channel and into the lumen;
a damper coupled to the second port that controls pressure within the inflatable bone tamp when pressure within the inflatable bone tamp reaches a threshold; and
a valve coupled to the third port, the valve being configured for removal of the material from the inflatable bone tamp through the third port to deflate the balloon.

20. The inflatable bone tamp recited in claim 19 , wherein the proximal end of the balloon is coupled to a distal end of the cannula and the distal end of the balloon is coupled to the distal end of the shaft.

Assignees

• Medtronic Holding Co Sarl

Inventors

• Druma Calin

Classifications

• A61B17/8827

  with filtering, degassing, venting or pressure relief means · CPC title

• A61B17/8855 Primary

  inflatable, e.g. kyphoplasty balloons · CPC title