US 12,303,662 B2
Injection devices and systems and methods for using them
Stephen A. Leeflang, Sunnyvale, CA (US); and Christian S. Eversull, Palo Alto, CA (US)
Assigned to CLPH, LLC, Palo Alto, CA (US)
Filed by CLPH, LLC, Palo Alto, CA (US)
Filed on Dec. 5, 2022, as Appl. No. 18/075,377.
Application 18/075,377 is a continuation of application No. 16/707,775, filed on Dec. 9, 2019, granted, now 11,517,662.
Application 16/707,775 is a continuation of application No. 15/284,466, filed on Oct. 3, 2016, granted, now 10,500,332, issued on Dec. 10, 2019.
Claims priority of provisional application 62/299,553, filed on Feb. 24, 2016.
Claims priority of provisional application 62/250,125, filed on Nov. 3, 2015.
Prior Publication US 2024/0269373 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/14 (2006.01); A61B 34/20 (2016.01); A61M 5/00 (2006.01); A61M 5/145 (2006.01); A61M 5/158 (2006.01); A61M 25/00 (2006.01); A61B 90/00 (2016.01); A61M 5/20 (2006.01)
CPC A61M 5/1407 (2013.01) [A61B 34/20 (2016.02); A61M 5/007 (2013.01); A61M 5/1452 (2013.01); A61M 5/158 (2013.01); A61M 25/0026 (2013.01); A61M 25/005 (2013.01); A61M 25/0084 (2013.01); A61B 2090/3966 (2016.02); A61M 5/14 (2013.01); A61M 2005/2013 (2013.01); A61M 2025/0089 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A device for injecting one or more agents into tissue within a patient's body, comprising:
a substantially radially fixed and substantially axially incompressible tubular member comprising a proximal end and a distal end sized for introduction into the patient's body, at least a distal portion of the tubular member being sufficiently flexible to allow introduction into tortuous anatomy within the patient's body;
a flexible, fluid-tight member disposed within an interior region of the tubular member and extending between the proximal end and the distal end, the fluid-tight member defining a lumen extending between the proximal end and the distal end, the fluid-tight member being expandable within the interior of the tubular member when exposed to internal fluid pressure with the tubular member limiting expansion of the fluid-tight member; and
a needle tip extending from a distal end of the tubular member and having a cross-section smaller than the distal end, the needle tip comprising a passage communicating between the lumen and one or more outlets in the needle tip, the passage having a cross-section smaller than the lumen.