Minimally clogging device for delivery of fluids

Patent metadata

Field	Value
Publication number	US-10420901-B2
Application number	US-201414546234-A
Country	US
Kind code	B2
Filing date	Nov 18, 2014
Priority date	Sep 4, 2014
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

An apparatus and method for delivery of fluids, particularly biological, reactive fluids. The apparatus provides an opening when force is acted on the apparatus, and closure when no force is acted thereon. The apparatus provides a cleaning mechanism to remove fluids and other materials from a mixing space after use.

First claim

What is claimed is:

1. A device for mixing a first fluid and a second fluid prior to dispensing from a delivery tip comprising:
(i) a dispensing device having a proximal end and a distal end and an outer surface therebetween, the dispensing device comprising a first lumen and a second lumen, each lumen having a proximal end and a distal end, wherein the first lumen transports said first fluid and said second lumen transports said second fluid, the dispensing device further comprising a delivery tip at the distal end comprising a conical head;
(ii) a cap having an open proximal end, a distal end, and a circumferential sidewall connecting the proximal and distal ends, the cap forming an open space between said proximal end and distal end, the cap being resiliently secured to the distal end of the delivery tip, and the cap comprising an overmold having an exit aperture extending through the distal end of the cap into the open space, the overmold comprising an interior, the interior being configured to receive the conical head of the delivery tip when the delivery tip and cap are mated,
(iii) a first volume within the open space of essentially zero formed by the mating of an inner surface of the distal end of the cap and the delivery tip at the distal end of the dispensing device, the first volume being created by no gap between the overmold and the conical head when the delivery tip and cap are mated; and
(iv) a second volume within the open space of greater than zero formed between the inner surface of the distal end of the cap and the delivery tip at the distal end of the dispensing device, the second volume being created by a mixing gap between the overmold of the cap and the conical head of the delivery tip when a pressure is applied to the cap, wherein said pressure on the cap is caused by the fluids being forced out of the distal ends of the first and second lumens.

2. The device of claim 1 , wherein the second volume is created due to the displacement of the cap with respect to the distal end of the dispensing device.

3. The device of claim 1 , wherein the circumferential sidewall is axially stretchable.

4. The device of claim 1 , wherein the exit aperture is in the overmold.

5. The device of claim 1 , wherein the side walls extend around the outside of the dispensing device.

6. The device of claim 1 , wherein the cap is held in place by at least one retaining ring.

7. The device of claim 1 , wherein the conical head includes an axial and distally extending tip, wherein the distally extending tip is configured to fit snugly within the exit aperture.

8. A method of dispensing a mixed product through the device of claim 1 , said method comprising:
(i) forcing the first fluid through the first lumen and the second fluid through the second lumen;
(ii) urging said first fluid and said second fluid from the first lumen and the second lumen;
(iii) exerting pressure on the cap, thereby stretching the circumferential sidewall of the cap in a distal direction and moving the distal end of cap distally away from conical body, forming a mixing gap;
(iv) mixing said first fluid and said second fluid within said mixing gap forming a resulting mixed product; and
(v) ejecting said mixed product through said exit aperture.

9. The method of claim 8 , wherein said mixing gap is the open space.

10. The method of claim 8 , further comprising aligning the exit aperture with a target site prior to ejecting said mixed product.

Assignees

• Ethicon Inc

Inventors

• Goodman John
• Leibowitz Rebecca

Classifications

• B05B15/522

  using cleaning elements penetrating the discharge openings · CPC title

• B05B7/0408

  with arrangements for mixing two or more liquids · CPC title

• A61B2017/00495

  for two-component glue · CPC title

• A61B17/00491 Primary

  Surgical glue applicators · CPC title

• A61M5/3294 Primary

  comprising means for injection of two or more media, e.g. by mixing · CPC title