Fibrin glue line and dot dispenser

• US 5,975,367 A
• Filed: 09/27/1996
• Issued: 11/02/1999
• Est. Priority Date: 09/27/1996
• Status: Expired due to Term

• Current Assignee: Asahi Kasei Medical Co., Ltd. (Asahi Kasei Corporation)
• Original Assignee: The Thermogenesis Corporation (Cesca Therapeutics Incorporated)
• Inventors: Alcone, Jerry M., Menke, Pete J., Coelho, Philip H., Wolf, Terry L.
• Primary Examiner(s): Huson, Gregory L.
• Application Number:
  US08/722,558
• Time in Patent Office: 1,131 Days
• Field of Search: 604/82, 604/191, 222/137, 222/309
• US Class Current: 222/137
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 2017/00495 for two-component glue

Abstract

A fibrin glue dispenser including a spring biased rack. The rack spring is a coil spring having substantially linear characteristics along its operating length. The rack spring forces first and second plungers into first and second loaded syringes to dispense thrombin and fibrinogen into first and second exits such that the admixture of the two occurs for forming fibrin glue away from the exists. A dispensing lever can be controlled as to the fibrin glue formation to dispense either drops of fibrin glue or an elongate line of fibrin glue.

Claims

1. A device for dispensing fibrin glue comprising, in combination:

a support means for receiving a first syringe body containing thrombin and a second syringe body containing fibrinogen,

a holder which engages plungers of the syringes,

urging means coupling said support means and said holder for pushing the plungers from an extended position to a retracted position where the plungers will have pushed out the contents of the syringes, and

means for controlling the rate at which the contents of the syringes are dispensed integrated in said support means, said urging means and said holder.

5. The device of claim 1 wherein said urging means includes biasing means extending between said support means and said holder and said means for controlling the rate at which the contents of the syringes are dispensed includes a release for said biasing means.

6. The device of claim 5 wherein said release includes force responsive means which in the presence of no force holds said urging means in fixed position, and the presence of a first force allows said biasing means to dispense a continuous stream from said syringes and a third position responsive to a third force magnitude which interrupts dispensing from said syringes.

7. The device of claim 6 including anti-fouling means adjacent syringe outlets.

8. The device of claim 7 wherein said anti-fouling means includes a pair of axially aligned passageways, each having outlets, one outlet terminating along its longitudinal extent at a locale different from another said outlet.

9. The device of claim 8 wherein said passageways are concentrically oriented.

10. The device of claim 9 wherein support means are formed from a first and second housing interconnected to define a hollow interior, said housings are substantially mirror images of each other and frictionally connected together by complemental male and female frictional fastenings.

11. The device of claim 10 wherein said housings include an access slit on each said housing exposing a button which when engaged releases said biasing means and allows plunger advancement.

12. The device of claim 11 wherein said button is operatively coupled to a lever which selectively releases and engages said biasing means.

2. A dispenser for fibrin glue formed from first and second fibrin glue components in which a removable nozzle means is operatively coupled to a dispenser body and in which said nozzle means includes first and second passageways for receiving the first fibrin glue component in said first passageway having a first outlet and the second fibrin glue component in said second passageway having a second outlet, and

said first passageway centrally located, said second passageway is concentrically oriented with respect to said first passageway.

13. The dispenser of claim 2 wherein said first passageway and said second passageway outlets are spaced one from the other to preclude and prevent contact of said first fibrin glue component with said second fibrin glue component at one of said outlets when said dispenser is moved linearly.

14. The dispenser of claim 13 wherein said dispenser includes biasing means operatively coupled thereto to push the first fibrin component and the second fibrin component through said passageways.

15. The dispenser of claim 14 including means for stopping the flow of the first fibrin component and the second fibrin component through said passageways.

3. A method for dispensing fibrin glue, the steps including:

loading thrombin into a first syringe while extending the syringe'"'"'s plunger,

loading fibrinogen into a second syringe while extending the syringe'"'"'s plunger,

orienting each syringe to a dispenser such that extended plungers of said thrombin syringe and fibrinogen syringe operate in concert,

tensioning both plungers so that the plungers are urged to simultaneously dispense the syringe'"'"'s contents, and

operating a push button and coupling the button to a tensioning release to allow one of three release profiles including dispensing the fibrin glue either in a ribbon, a drop or not at all.

16. The method of claim 3 the steps further including dispensing from one syringe at a locale different from dispensing from the other syringe to preclude the contents of one syringe from reacting with the contents of the other syringe when drawing the contents out from the syringes.

4. A dispenser for fibrin glue in which a removable nozzle means is operatively coupled to a dispenser body and in which said nozzle means includes a first passageway having a first outlet and a second passageway having a second outlet, and

said first passageway having a greater length compared to said second passageway such that said first outlet is axially spaced from said second outlet.

17. The dispenser according to claim 4 in which said dispenser body includes means to support a body portion of a syringe thereon and moveable plunger support means operatively coupled to said dispenser body having biasing means interposed therebetween to force the plunger into the syringe body.

18. The dispenser of claim 17 including stop means integrally formed in said dispenser body which arrests advancement of the plunger into the body of the syringe.

19. The dispenser of claim 18 in which the dispenser includes a push button which operates said means for arresting the plunger.

20. The dispenser of claim 19 wherein said first passageway is concentric to said second passageway.