Mechanical breakup unit for biochemically reactive fluid delivery device

• US 6,835,186 B1
• Filed: 09/26/2000
• Issued: 12/28/2004
• Est. Priority Date: 01/16/1995
• Status: Expired due to Fees

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Diorio, James P., Slepicka, James, Petersen, Robert L., Stadler, Cristina, Amrani, David, Prybell, Joseph F., Womelsdorf, John, Yardimci, Atif M., Bilstad, Arnold C., Delmotte, Yves A., Pennington, David W.
• Primary Examiner(s): Chin, Christopher L.
• Assistant Examiner(s): Lam, Ann Y.
• Application Number:
  US09/669,353
• Time in Patent Office: 1,554 Days
• Field of Search: 604/82-86, 604/88, 604/89, 604/90, 604/91, 604/92, 604/93.01, 604/94.01, 604/118, 604/131, 604/181, 604/187, 604/264, 604/266, 604/268, 604/43, 604/191, 604/275
• US Class Current: 604/82
• 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
• CPC Class Codes: A61F 2310/00377 Fibrin
• CPC Class Codes: A61L 15/32 Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin A61L15/225 takes precedence
• CPC Class Codes: A61L 27/225 Fibrin; Fibrinogen
• CPC Class Codes: A61L 31/046 Fibrin; Fibrinogen
• CPC Class Codes: B05B 11/0078 Arrangements for separately storing several components arrangements for pumping several liquids or other fluent materials from several containers B05B11/1081
• CPC Class Codes: B05B 11/02 Membranes or pistons acting on the contents inside the container, e.g. follower pistons

Abstract

This invention provides a medical device for delivering volumetric quantities of a first and a second biochemically reactive fluid in which separate MBUs atomize the fluids. The device of the present invention includes a fluid delivery device for laparoscopically delivering fluids having two feed conduits for delivering fluid to feed ports of the mechanical breakup units, the mechanical breakup units having two feed ports for receiving fluid from the feed conduits and directing such fluid into spin chambers and funneling portions having a sloped sidewall for directing fluid from the spin chambers through an exit port. The device is suitably dimensioned for creating a spray of two fluids with different viscosities such as fibrinogen and thrombin in such a manner that the thrombin spray cone encompasses the fibrinogen spray cone at a distance of about one inch from the exit port with a 0.5 cc/second flow rate to avoid depositing unreacted fibrinogen on a surface. Other instruments such as optical fibers may be incorporated within the device.

Claims

1. A fluid delivery device for use in minimally invasive surgical procedures comprising:

A) a tubular component having a distal end for insertion into a body cavity;

B) a spray tip assembly having a diameter of at most about 12 mm and attached to the distal end of the tubular component for discharging fluid into the body cavity, the spray tip assembly comprising;

a first mechanical breakup unit having at least one feed port configured to direct a fluid into a first spin chamber and issue into a first exit port; and

a second mechanical breakup unit positioned alongside the first mechanical breakup unit and having at least one feed port configured to direct a fluid into a second spin chamber and issue into a second exit port, wherein the first and second exit ports extend through an external surface of the spray tip; and

C) a first fluid source in fluid communication via the tubular component with two first feed conduits for delivering fluid to the first mechanical breakup unit and a second fluid source in fluid communication via the tubular component with two second feed conduits for delivering fluid to the second mechanical breakup unit, wherein the first and second feed conduits deliver fluid to different mechanical breakup units.

2. A fluid delivery device for use in minimally invasive surgical procedures comprising:

A) a tubular component having a distal end for insertion into a body cavity;

B) a spray tip assembly having a diameter of at most about 12 mm and attached to the distal end of the tubular component for discharging fluid into the body cavity, the spray tip assembly comprising;

a first mechanical breakup unit having at least one feed port configured to direct a fluid into a first spin chamber and issue into a first exit port; and

a second mechanical breakup unit positioned alongside the first mechanical breakup unit and having at least one feed port configured to direct a fluid into a second spin chamber and issue into a second exit port, wherein the first and second exit ports extend through an external surface of the spray tip; and

C) a first fluid source in fluid communication via the tubular component with two first feed conduits for delivering fluid to the first mechanical breakup unit and a second fluid source in fluid communication via the tubular component with two second feed conduits for delivering fluid to the second mechanical breakup unit, wherein the first and second feed conduits deliver fluid to different mechanical breakup units, and wherein the first and second feed conduits are adjacent the spin chambers and parallel to the first and second exit ports.

3. A fluid delivery device for use in minimally invasive surgical procedures comprising:

A) a tubular component having a distal end for insertion into a body cavity;

B) a spray tip assembly having a diameter of at most about 12 mm and attached to the distal end of the tubluar component for discharging fluid into the body cavity, the spray tip assembly comprising;

a first mechanical breakup unit having at least one feed port configured to direct fluid into a first spin chamber and issue into a first exit port; and

a second mechanical breakup unit positioned alongside the first mechanical breakup unit and having at least one feed port configured to direct a fluid into a second spin chamber and issue into a second exit port, wherein the first and second exit ports extend through an external surface of the spray tip;

C) a first fluid source in fluid communication via the tubular component with two first feed conduits for delivering fluid to the first mechanical breakup unit and a second fluid source in fluid communication via the tubular component with two second feed conduits for delivering fluid to the second mechanical breakup unit, wherein the first and second feed conduits deliver fluid to different mechanical breakup units;

wherein the feed ports direct fluid from the first and second feed conduits to the spin chamber of each mechanical breakup unit, and wherein the feed ports of each mechanical breakup unit are oriented such that the first fluid is caused to spin in a direction opposite the second fluid within the spin chambers.