Balloon catheter syringe for obtaining nominal inflation pressure and deflation vacuum
Various aspects of methods, systems, and use cases may be used to inflate a balloon catheter using a syringe. The syringe may include a channel portion shaped to create a channel, and a plunger, for example including an inserted end and a free end, which when inserted in the channel to place the inserted end at a plunger starting position, causes a starting pressure to be applied to the balloon catheter. In an example, the channel portion or the plunger includes at least one visual indicia indicating the plunger starting position, the plunger starting position located along an insertion axis (e.g., of the channel portion and the plunger).
1 . A syringe for inflating a balloon catheter, the syringe comprising:
a channel portion including a balloon catheter insertion end and a plunger receiving end, the channel portion shaped to create a channel, the channel portion including a groove at a plunger starting position located between the balloon catheter insertion end and the plunger receiving end;
a plunger, including an inserted end and a free end; and
an outer surface of the inserted end of the plunger includes a raised bump corresponding with the groove such that the outer surface of the of the inserted end of the plunger locks into the channel portion at the plunger starting position and maintains an atmospheric pressure within the balloon catheter;
wherein when the plunger is advanced in the channel from the plunger starting position toward the balloon catheter insertion end an inflation pressure for the syringe above the atmospheric pressure is applied to the balloon catheter and when the plunger is retracted in the channel from the plunger starting position toward the plunger receiving end, a deflation pressure for the syringe below the atmospheric pressure is applied to the balloon catheter.
2 . The syringe of claim 1 , wherein the plunger starting position is approximately one third or one half of a length of the channel portion from the plunger receiving end to the balloon catheter insertion end.
3 . The syringe of claim 1 , further comprising at least one visual indicia located on a transparent or translucent portion of an outer surface of the channel portion and wherein the plunger includes a color at the inserted end, wherein the color is visible when the plunger is inserted into the channel.
4 . The syringe of claim 1 , wherein the groove and raised bump align the plunger with the plunger starting position.
5 . The syringe of claim 1 , wherein the free end is configured to receive a force applied by a single hand of a user to advance the plunger within the channel.
6 . The syringe of claim 1 , wherein when the plunger is advanced into the channel proximal the balloon catheter insertion end from the plunger starting position to an inflation position, fluid is pushed into the balloon catheter, causing a balloon on the balloon catheter to inflate to the inflation pressure.
7 . The syringe of claim 6 , wherein the inflation pressure is approximately fifteen to sixteen psi above atmospheric pressure.
8 . The syringe of claim 6 , wherein a volume within the channel between the plunger starting position and the inflation position corresponds to a full inflation volume of a non-compliant balloon for sizing an inner lateral dimension of a location of a pulmonary passage for locating a selected size checkvalve at the location.
9 . The syringe of claim 6 , wherein the inflation position indicates that the inflation pressure is maintained within the balloon catheter.
10 . The syringe of claim 1 , wherein when the plunger is withdrawn from the channel proximal the plunger receiving end from the plunger starting position to a deflation position, fluid is removed from the balloon catheter, causing a balloon on the balloon catheter to deflate to the deflation pressure.
11 . The syringe of claim 10 , wherein the deflation pressure is approximately two to three psi below atmospheric pressure.
12 . The syringe of claim 10 , wherein a volume within the channel between the plunger starting position and the deflation position corresponds to a deflation volume of a non-compliant balloon for confirming tang placement in a location of a pulmonary passage for a checkvalve at the location.
13 . The syringe of claim 10 , wherein the deflation position indicates that the deflation pressure is maintained within the balloon catheter.
14 . A method for using a syringe to inflate a balloon catheter, the method comprising:
affixing the syringe to the balloon catheter, wherein the syringe includes:
a plunger, including an inserted end and a free end; and
a channel portion, the channel portion including a balloon catheter insertion end and a plunger receiving end, the channel portion shaped to create a channel:
inserting the inserted end of the plunger into the channel created by the channel portion;
locking a raised bump located on an outer surface of the inserted end of the plunger into a groove located on the channel portion at a plunger starting position located between the balloon catheter insertion end and the plunger receiving end to maintain an atmospheric pressure within the balloon catheter;
inserting the balloon catheter to a target location within a patient airway; and
applying a force to the plunger to move the plunger further into the channel portion including moving the insertion end to an inflation position to cause the balloon of the balloon catheter to inflate to an inflation pressure.
15 . The method of claim 14 , wherein the channel portion includes at least one visual indicia located on a transparent or translucent portion of an outer surface of the channel portion and wherein the plunger includes a color at the inserted end, wherein the color is visible when the plunger is inserted into the channel portion.
16 . A kit comprising:
at least two balloon catheters with balloons of different sized maximum outer diameters; and
a syringe including:
a channel portion including a balloon catheter insertion end and a plunger receiving end, the channel portion shaped to create a channel and further including a groove at a plunger starting position located between the balloon catheter insertion end and the plunger receiving end;
a plunger, including an inserted end and a free end; and
an outer surface of the inserted end of the plunger including a raised bump corresponding with the groove such that the outer surface of the inserted end of the plunger locks into the channel portion at the plunger starting position and maintains an atmospheric pressure within the at least two balloon catheters; and
wherein when the plunger is advanced in the channel from the plunger starting position toward the balloon catheter insertion end an inflation pressure for the syringe above the atmospheric pressure is applied to the at least two balloon catheters and when the plunger is retracted in the channel from the plunger starting position toward the plunger receiving end, a deflation pressure for the syringe below the atmospheric pressure is applied to the at least two balloon catheters.
17 . The kit of claim 16 , wherein at least one visual indicia is located on a transparent or translucent portion of the outer surface of the channel portion and wherein the plunger includes a color at the inserted end, wherein the color is visible when the plunger is inserted into the channel.
18 . The kit of claim 16 , wherein when the plunger is inserted into the channel proximal to the balloon catheters from the plunger starting position to an inflation position, fluid is pushed into the balloon catheter, causing a balloon on the balloon catheter to inflate to an inflation pressure, wherein the inflation position is positioned to be able to inflate either of the balloons of different sized maximum outer diameters that is attached to the syringe.