Catheter having a low drag septum
First Claim
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1. A catheter and introducer needle assembly, comprising:
- a catheter having a proximal end and a distal end;
a catheter adapter in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, the catheter adapter including a side port in fluid communication with the catheter adapter;
an introducer needle having a proximal end and a distal end disposed inside the catheter wherein the introducer needle defines a notch therein adjacent to the distal end and defining a notch distance between a proximal end of the notch and the distal end of the introducer needle;
a needle hub having a proximal end and a distal end connected to the proximal end of needle; and
an elastomeric septum defining a cavity therein disposed in the catheter adapter and located proximal of the side port wherein the septum has a length greater than the notch distance.
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Abstract
The catheter and introducer needle assembly of this invention includes a catheter adapter at its proximal end having a hollow septum disposed therein. The septum preferably is hollow to minimize drag as the introducer needle is removed therefrom. If desired a gel or lubricious material may be disposed in the cavity.
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Citations
23 Claims
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1. A catheter and introducer needle assembly, comprising:
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a catheter having a proximal end and a distal end;
a catheter adapter in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, the catheter adapter including a side port in fluid communication with the catheter adapter;
an introducer needle having a proximal end and a distal end disposed inside the catheter wherein the introducer needle defines a notch therein adjacent to the distal end and defining a notch distance between a proximal end of the notch and the distal end of the introducer needle;
a needle hub having a proximal end and a distal end connected to the proximal end of needle; and
an elastomeric septum defining a cavity therein disposed in the catheter adapter and located proximal of the side port wherein the septum has a length greater than the notch distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A catheter and introducer needle assembly, comprising:
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a catheter having a proximal end and a distal end;
a catheter adapter in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, the catheter adapter including a side port in fluid communication with the catheter adapter;
a septum holder disposed in the catheter adapter and located proximal of the side port;
a septum disposed in the septum holder and including a septum proximal portion and a septum distal portion and defining a cavity between the proximal portion and the distal portion;
an introducer needle having a proximal end and a distal end disposed inside the catheter wherein the introducer needle defines a notch therein adjacent to the distal end and defining a notch distance between a proximal end of the notch and the distal end of the introducer needle wherein the length of the septum is at least as long as the notch distance; and
a needle hub having a proximal end and a distal end connected to the proximal end of needle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A septum assembly, comprising:
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a septum holder; and
a septum disposed in the septum holder and including a septum proximal portion and a septum distal portion and defining a cavity between the septum proximal portion and the septum distal portion wherein the septum proximal portion is a separate piece than the septum distal portion. - View Dependent Claims (20, 21, 22, 23)
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Specification