Pressure reference assemblies for body fluid drainage systems and associated methods
First Claim
1. A pressure reference assembly for a body fluid drainage system, the pressure reference assembly comprising:
- a first reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the first reference line has a first flexible region configured to sense pressure;
a second reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the second reference line has a second flexible region configured to be in pressure communication with atmospheric pressure, and wherein the first and second flexible regions are configured to be positioned at a first location and the second portions of the first and second reference lines are configured to be positioned at a second location spaced apart from the first location; and
a pressure sensor assembly at the second portions of the first and second reference lines, wherein the pressure sensor assembly is configured to measure pressure and/or force at the second portions of the first and second reference lines.
2 Assignments
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Accused Products
Abstract
Drainage systems for excess body fluids and associated methods are disclosed herein. A drainage system in accordance with an embodiment of the present technology can include, for example, a drainage catheter, a first reference line, a second reference line, and a pressure sensor assembly. The catheter can include a flexible interface member and an inlet can be placed in fluid communication with a site of excess body fluid within a patient. A first flexible region of the first reference line can be in pressure communication with the flexible interface member, and a second flexible region of the second reference line can be in pressure communication with the surrounding atmosphere. The pressure sensor assembly can be spaced apart from the flexible regions, and measure the pressures of the first and second reference lines. This information can be used to determine the pressure at the site of excess body fluid.
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Citations
26 Claims
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1. A pressure reference assembly for a body fluid drainage system, the pressure reference assembly comprising:
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a first reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the first reference line has a first flexible region configured to sense pressure; a second reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the second reference line has a second flexible region configured to be in pressure communication with atmospheric pressure, and wherein the first and second flexible regions are configured to be positioned at a first location and the second portions of the first and second reference lines are configured to be positioned at a second location spaced apart from the first location; and a pressure sensor assembly at the second portions of the first and second reference lines, wherein the pressure sensor assembly is configured to measure pressure and/or force at the second portions of the first and second reference lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A body fluid drainage system, comprising a pressure reference assembly in combination with a drainage catheter, wherein:
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the drainage catheter has a proximal portion and a distal portion, and wherein the proximal portion comprises an inlet configured to be in fluid communication with a site of excess body fluid within a patient; and
the pressure reference assembly comprises;a first reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the first reference line has a first flexible region configured to sense pressure; a second reference line having a first portion and a second portion opposite the first portion, wherein the first portion of the second reference line has a second flexible region configured to be in pressure communication with atmospheric pressure, wherein the second portions of the first and second reference lines are configured to be positioned at a second location spaced apart from the first and second flexible regions and; and a pressure sensor assembly at the second portions of the first and second reference lines, wherein the pressure sensor assembly is configured to measure pressure and/or force at the second portions of the first and second reference lines. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification