Systems and methods for providing a catheter assembly
First Claim
1. A system for controlling fluid flow in a catheter assembly, comprising:
- an intravenous catheter assembly having a catheter adapter and a needle hub, the catheter adapter having an inner lumen;
a septum disposed within a portion of the inner lumen;
a ventilation channel interposed between the septum and an inner surface of the inner lumen of the catheter adapter, the ventilation channel having a surface area and perimeter selected to permit passage of air and prevent passage of blood;
a slit formed through the septum;
a coating, formed of vapor deposited polyxylylene polymers, disposed within the slit of the septum, the coating having a thickness of between approximately 0.00005 to 0.0005 millimeters; and
an introducer needle having a first end and a second end, the first end being coupled to the needle hub and the second end extending through the inner lumen of the catheter adapter, a middle portion of the introducer needle being positioned within a portion of the septum.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for controlling fluid flow in a catheter assembly is disclosed herein. An intravenous catheter assembly has a catheter adapter and a needle hub, and the catheter adapter has an inner lumen. A septum is disposed within a portion of the inner lumen, and a slit is formed through the septum. A Parylene coating is disposed within the slit of the septum, the Parylene coating has a thickness of between approximately 0.00005 to 0.0005 millimeters. An introducer needle has a first end coupled to the needle hub and the second end extending through the inner lumen of the catheter adapter. A middle portion of the introducer needle is positioned within a portion of the septum.
141 Citations
17 Claims
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1. A system for controlling fluid flow in a catheter assembly, comprising:
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an intravenous catheter assembly having a catheter adapter and a needle hub, the catheter adapter having an inner lumen; a septum disposed within a portion of the inner lumen; a ventilation channel interposed between the septum and an inner surface of the inner lumen of the catheter adapter, the ventilation channel having a surface area and perimeter selected to permit passage of air and prevent passage of blood; a slit formed through the septum; a coating, formed of vapor deposited polyxylylene polymers, disposed within the slit of the septum, the coating having a thickness of between approximately 0.00005 to 0.0005 millimeters; and an introducer needle having a first end and a second end, the first end being coupled to the needle hub and the second end extending through the inner lumen of the catheter adapter, a middle portion of the introducer needle being positioned within a portion of the septum. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method manufacturing a catheter assembly having features for controlling fluid flow within the catheter assembly, the method comprising:
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providing an intravenous catheter assembly having a catheter adapter and a needle hub, the catheter adapter having an inner lumen; disposing a septum within the inner lumen, the septum having a slit therethrough; providing a ventilation channel between the septum and an inner surface of the inner lumen of the catheter adapter, the ventilation channel having a surface area and perimeter selected to permit passage of air and prevent passage of blood; coating the septum and the slit with a coating having a thickness of between approximately 0.00005 to 0.0005 millimeters, the coating being formed of vapor deposited polyxylylene polymers; positioning an introducer needle within the catheter adapter, wherein a first end of the introducer needle is coupled to the needle hub and a second end of the introducer needle extends through the inner lumen of the catheter adapter, a middle portion of the introducer needle being positioned within a portion of the septum. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An intravenous catheter assembly, comprising:
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a catheter adapter having an inner lumen, the inner lumen having a proximal end, a distal end and a middle portion; a recess forming the middle portion of the inner lumen; a septum disposed within the recess, the septum forming a defeatable barrier between the proximal end and the distal end of the inner lumen; a ventilation channel interposed between the septum and an inner surface of the inner lumen of the catheter adapter, the ventilation channel having a surface area and perimeter selected to permit passage of air and prevent passage of blood; a coating disposed within a slit of the septum, the coating having a thickness of between approximately 0.00005 to 0.0005 millimeters, the coating being formed of vapor deposited polyxylylene polymers; an introducer needle positioned within the inner lumen, a portion of the needle extending through the inner lumen, such that a tip portion of the introducer needle extends beyond the catheter adapter, a portion of the introducer needle being inserted through the septum; a septum activator positioned within the proximal end of the inner lumen, the septum activator having a pathway through which the introducer needle is inserted, the septum activator further having a first end for biasing open a slit of the septum, and a second end having a contact surface; and an opening forming a proximal end of the catheter adapter, wherein an external device is inserted through the opening to contact the contact surface of the septum activator thereby advancing the first end of the septum activator through the slit of the septum and against the coating. - View Dependent Claims (14, 15, 16, 17)
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Specification