Dual check valve one handed applicator

Patent metadata

Field	Value
Publication number	US-2022015749-A1
Application number	US-201817291880-A
Country	US
Kind code	A1
Filing date	Nov 7, 2018
Priority date	Nov 7, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

Delivery devices, delivery systems, and related methods, for precise administration of hemostatic compositions are disclosed, which may include a trigger mechanism, a pusher, a valve, and a cannula. The pusher is configured to engage with the trigger mechanism, retain a first syringe, a least by coupling with a plunger of the first syringe. The valve is fluidly coupled to the first syringe. The valve is further configured to engage with a second syringe, in fluid communication with both the valve and the first syringe. The cannula extends distally from and is fluidly coupled to the valve. Activation of the trigger mechanism causes the pusher and the plunger of the first syringe to translate in a distal direction, to expel a composition out of the first syringe, through the valve, through the cannula, and out of a distal end of the cannula.

First claim

1 . A delivery device comprising:
a trigger mechanism; a pusher, configured to engage with the trigger mechanism, the pusher further configured to retain a first syringe at least by coupling with a plunger of the first syringe; a valve fluidly coupled to the first syringe; and a cannula extending distally from and fluidly coupled to the valve, wherein activation of the trigger mechanism causes the pusher and the plunger of the first syringe to translate in a distal direction, such that a composition in the first syringe is expelled out of the first syringe, through the valve, through the cannula, and out of a distal end of the cannula, and wherein the valve is further configured to engage with a second syringe, such that the second syringe is in fluid communication with both the valve and the first syringe.

2 . The delivery device of claim 1 , wherein prior to activation of the trigger mechanism, the composition is expelled out of the second syringe, through the valve, and into the first syringe, such that the first syringe is filled with the composition via the second syringe.

3 . The delivery device of claim 1 , wherein engagement between the valve and the second syringe is a luer lock engagement.

4 . The delivery device of claim 1 , wherein the valve is a two-way check valve.

5 . The delivery device of claim 1 , wherein the valve is a user-selectable stopcock valve.

6 . The delivery device of claim 1 , wherein the pusher includes a plurality of teeth, and wherein the trigger mechanism includes a ratchet, the ratchet configured to engage with the plurality of teeth of the pusher.

7 . The delivery device of claim 1 , wherein the composition is a viscous hemostatic material.

8 . The delivery device of claim 1 , further including a window indicator that indicates an amount of the composition remaining in the first syringe.

9 . The delivery device of claim 1 , wherein the cannula includes an inner cannula configured to deliver the composition and an outer cannula, the outer cannula disposed concentrically around the inner cannula.

10 . The delivery device of claim 9 , wherein the outer cannula is stainless steel.

11 . A delivery system comprising:
a delivery device, including:
a trigger mechanism;
a pusher, configured to engage with the trigger mechanism, the pusher further configured to retain a first syringe a least by coupling with a plunger of the first syringe;
a valve fluidly coupled to the first syringe; and
a cannula extending distally from and fluidly coupled to the valve; and
a second syringe fluidly coupled to the valve, the second syringe including a composition, wherein depressing a plunger of the second syringe causes the composition to be expelled out of the second syringe, through the valve, and into the first syringe, and wherein activation of the trigger mechanism causes the pusher and the plunger of the first syringe to translate in a distal direction, such that the composition in the first syringe is expelled out of the first syringe, through the valve, through the cannula, and out of a distal end of the cannula.

12 . The delivery system of claim 11 , wherein the valve is a two-way check valve, such that the composition can only flow in a first direction, from the second syringe through the valve into the first syringe, and in a second direction, from the first syringe through the valve into the cannula.

13 . The delivery system of claim 11 , wherein engagement between the valve and the second syringe is a luer lock engagement.

14 . The delivery system of claim 11 , wherein the composition is a viscous hemostatic material.

15 . The delivery system of claim 11 , wherein the cannula includes an inner cannula configured to deliver the composition and an outer cannula, the outer cannula disposed concentrically around the inner cannula.

16 . A method of delivering a composition comprising:
attaching a supply syringe to a valve of a delivery device, the supply syringe including the composition; depressing a plunger of the supply syringe such that, responsive to depressing the plunger, the composition is expelled out of the supply syringe, through the valve, and into a delivery syringe; activating a trigger mechanism of the delivery device such that, responsive to activating the trigger mechanism, a plunger of the delivery syringe is depressed and the composition is expelled out of the delivery syringe, through the valve, and into a cannula; further depressing the plunger of the supply syringe such that, responsive to depressing the plunger, additional composition is expelled out of the supply syringe, through the valve, and into the delivery syringe; and further activating the trigger mechanism of the delivery device such that, responsive to activating the trigger mechanism, the plunger of the delivery syringe is depressed and the additional composition is expelled out of the delivery syringe, through the valve, and into the cannula.

17 . The method of claim 16 , further comprising:
detaching the supply syringe from the valve of the delivery device; attaching a flush syringe to the valve of the delivery device, the flush syringe including a flushing fluid different from the composition; depressing a plunger of the flush syringe such that, responsive to depressing the plunger, the flushing fluid is expelled out of the flush syringe, through the valve, and into the delivery syringe; and activating the trigger mechanism of the delivery device such that, responsive to activating the trigger mechanism, the plunger of the delivery syringe is depressed and the flushing fluid is expelled out of the delivery syringe, through the valve, and into the cannula, such that the flushing fluid pushes the composition out of the cannula.

18 . The method of claim 17 , wherein the flushing fluid is saline, or other liquid medium, or gas.

19 . The delivery system of claim 16 , wherein, prior to initially attaching the supply syringe to the valve of the delivery device, the composition is prepared for administration in the supply syringe.

20 . A kit comprising:
a pre-filled sodium chloride solution syringe; a thrombin vial; a pre-filled gelatin matrix syringe; and a delivery device, including:
a trigger mechanism;
a pusher, configured to engage with the trigger mechanism, the pusher further configured to retain a delivery syringe at least by coupling with a plunger of the delivery syringe;
a valve fluidly coupled to the delivery syringe; and
a cannula extending distally from and fluidly coupled to the valve;
wherein the pre-filled gelatin matrix syringe fluidly couples to the valve, wherein depressing a plunger of the pre-filled gelatin matrix syringe causes a composition to be expelled out of the pre-filled gelatin matrix syringe, through the valve, and into the delivery syringe, and wherein activation of the trigger mechanism causes the pusher and the plunger of the delivery syringe to translate in a distal direction, such that the composition in the delivery syringe is expelled out of the delivery syringe, through the valve, through the cannula, and out of a distal end of the cannula.

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Sanders Paul J
• Parmar Krishnakumarsinh Hitendrasinh
• Schafer Jerome

Classifications

• A61M2202/0425

  Thrombin · CPC title

• A61M39/24

  Check- or non-return valves · CPC title

• A61M5/178

  Syringes · CPC title

• A61L2400/04

  Materials for stopping bleeding · CPC title

• A61B2017/00884

  enhancing wound closure · CPC title