Multi-Port Delivery System

• US 20110270181A1
• Filed: 04/30/2010
• Published: 11/03/2011
• Est. Priority Date: 04/30/2010
• Status: Active Grant

• Current Assignee: Kyphon SARL (Medtronic Plc)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Donovan, Brian W., Click, Bryan A.
• Granted Patent: US 8,876,833 B2
• Time in Patent Office: Days
• US Class Current: 604/118
• 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 17/8827 with filtering, degassing, venting or pressure relief means

Abstract

A device for delivering material to multiple surgical target locations includes a pressure reservoir selectably coupled to two or more outlets. Coupling the pressure reservoir to a given one of the outlets and pressurizing the pressure reservoir causes flowable material (e.g., bone filler material) to be dispensed from that outlet. A diverter for selectably coupling the pressure reservoir one of the outlets can be configured to trigger a pressure release valve for the pressure reservoir upon switching, thereby preventing unexpected or uncontrolled material delivery from the new outlet in response to sudden high pressure exposure.

Claims

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

a plurality of outputs;

a pressure reservoir;

a pressure source for pressurizing the pressure reservoir; and

a diverter for selectably coupling the pressure reservoir to one of the plurality of outputs.

2. The device of claim 1, further comprising a pressure release valve for venting the pressure reservoir to a baseline pressure,

wherein the diverter comprises a triggering feature for opening the pressure release valve when the diverter switches between any of the plurality of outputs.

3. The device of claim 2, wherein the diverter switches between the plurality of outputs by changing orientation,

wherein the triggering feature comprises a physical feature on the diverter, and

wherein the physical feature contacts an actuation element of the pressure release valve when the diverter changes orientation.

4. The device of claim 2, wherein when the diverter switches between a first one of the plurality of outputs to a second one of the plurality of outputs, the triggering feature opens the pressure release valve before decoupling the pressure reservoir from the first one of the plurality of outputs, and the triggering feature closes the pressure release valve after coupling the pressure reservoir with the second one of the plurality of outputs.

5. The device of claim 4, wherein the triggering feature opens the pressure release valve while the diverter couples both the first one and the second one of the plurality of outputs to the pressure reservoir.

6. The device of claim 2, wherein the pressure reservoir contains a hydraulic fluid.

7. The device of claim 6, wherein each of the plurality of outputs comprises:

a storage chamber for housing a flowable material;

a piston for expressing the flowable material from the storage chamber; and

a flexible hydraulic line for delivering the hydraulic fluid to the piston.

8. The device of claim 1, wherein the diverter comprises a substantially cylindrical element, and

wherein selectably coupling the pressure reservoir to one of the plurality of outputs comprises rotating the diverter about a longitudinal axis of the diverter.

9. The device of claim 8, further comprising:

a first bleed port, and

a second bleed port,

wherein the diverter defines a first flow path and a second flow path,

wherein when the diverter is in a first orientation, the first flow path connects a first one of the plurality of outputs to the pressure reservoir and the second flow path connects a second one of the plurality of outputs to the second bleed port,

wherein when the diverter is in a second orientation, the first flow path connects the first one of the plurality of outputs and the pressure reservoir to the first bleed port,

wherein when the diverter is in a third orientation, the first flow path connects the first one of the plurality of outputs to the first bleed port and the second flow path connects the second one of the plurality of outputs to the pressure reservoir, and

wherein when the diverter is in a fourth orientation, the second flow path connects the second one of the plurality of outputs and the pressure reservoir to the second bleed port.

10. The device of claim 2, wherein the pressure reservoir contains a flowable material, and wherein each of the plurality of outputs comprises:

a nozzle sized to fit through a cannula; and

a flexible length of tubing for delivering the flowable material from the pressure reservoir to a target surgical location.

11. The device of claim 2, wherein the pressure source comprises:

a one-way check valve coupled to the pressure reservoir;

a piston;

a trigger for manually driving the piston to pressurize the pressure reservoir through the one-way check valve.

12. A surgical method comprising:

pressurizing a pressure reservoir to express a first quantity of bone filler material from a first nozzle into a first target surgical location;

decoupling the first nozzle from the pressure reservoir;

coupling a second nozzle to the pressure reservoir; and

pressurizing the pressure reservoir to express a second quantity of bone filler material from the second nozzle into a second target surgical location.

13. The surgical method of claim 12, wherein decoupling the first nozzle from the pressure reservoir comprises venting the pressure reservoir to a baseline pressure while the first nozzle remains coupled to the pressure reservoir and then decoupling the first nozzle from the pressure reservoir.

14. The surgical method of claim 13, wherein venting the pressure reservoir to the baseline pressure comprises opening a pressure release valve coupled to the pressure reservoir, and

wherein coupling the second nozzle to the pressure reservoir comprises coupling the second nozzle to the pressure reservoir while maintaining the release valve in an open condition, and then closing the pressure release valve.

15. The surgical method of claim 14, wherein venting the pressure reservoir while the first nozzle remains coupled to the pressure reservoir occurs concurrently with coupling the second nozzle to the pressure reservoir while maintaining the pressure release valve in an open condition.

16. The surgical method of claim 15, wherein pressurizing a pressure reservoir to express the first quantity of bone filler material from the first nozzle into the first target surgical location comprises:

providing a hydraulic fluid in the pressure reservoir;

providing a first length of flexible tubing between a first pressure outlet and a first storage chamber; and

positioning a flow path between the pressure reservoir and the first pressure outlet,

wherein the first quantity of bone filler material is expressed from the first storage chamber through the first nozzle in response to the hydraulic fluid flow through the first length of flexible tubing.

17. The surgical method of claim 16, wherein pressurizing the pressure reservoir to express the second quantity of bone filler material from the second nozzle into the second target surgical location comprises:

providing a second length of flexible tubing between a second pressure outlet and a second storage chamber; and

positioning the flow path between the pressure reservoir and the second pressure outlet,

wherein the second quantity of bone filler material is expressed from the second storage chamber through the second nozzle in response to the hydraulic fluid flow through the second length of flexible tubing.

18. The surgical method of claim 17, wherein venting the pressure reservoir while the first nozzle remains coupled to the pressure reservoir comprises positioning the flow path between the pressure reservoir and the first and second pressure outlets.

19. The surgical method of claim 12, further comprising:

decoupling the second nozzle from the pressure reservoir;

re-coupling the first nozzle to the pressure reservoir; and

pressurizing the pressure reservoir to express a third quantity of bone filler material from the first nozzle into the first target surgical location.

20. The surgical method of claim 12, further comprising:

decoupling the second nozzle from the pressure reservoir;

coupling a third nozzle to the pressure reservoir; and

pressurizing the pressure reservoir to express a third quantity of bone filler material from the third nozzle into a third target surgical location.