Peripheral blood sampling methods and devices
First Claim
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1. An apparatus, comprising:
- a catheter having a proximal end and a distal end, the catheter configured to be moved between an extended configuration in which the distal end of the catheter extends beyond a distal end of a conduit at least partially disposed in a body of a patient, and a retracted configuration in which the catheter is separate from the conduit; and
a sheath coupled to the catheter, the sheath completely enclosing the catheter when the catheter is in the retracted configuration, and only partially enclosing the catheter when the catheter is in the extended configuration,the catheter configured to fluidically couple to an external reservoir at the proximal end of the catheter to allow a fluid to be transported to the external reservoir when the catheter is in the extended configuration; and
an adapter configured to be coupled between the conduit and the sheath, the adapter configured to receive a portion of the catheter and to direct the catheter towards a target area, the adapter defines a lumen passing through an opening at a proximal end of the adapter and an opening at a distal end of the adapter, the adapter including at least one valve disposed in the lumen,wherein an inner surface of the adapter defining the lumen tapers from a first diameter on a proximal side of the lumen of the adapter to a second diameter, smaller than the first diameter, on a distal side of the lumen of the adapter and is configured to guide the catheter towards the target area.
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Abstract
Methods and devices are provided for transporting fluid between a body and an external source. More particularly, the methods and devices provided can be used to transport blood from a body. In one exemplary embodiment, a system is provided for transporting fluid between a body and an external source. The system can include a collection catheter that is sized to fit inside a catheter that is placed in the body and configured to have its distal end extend beyond a distal end of the catheter that is placed in the body. Various methods for transporting fluid from the body to an external source are also provided.
123 Citations
10 Claims
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1. An apparatus, comprising:
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a catheter having a proximal end and a distal end, the catheter configured to be moved between an extended configuration in which the distal end of the catheter extends beyond a distal end of a conduit at least partially disposed in a body of a patient, and a retracted configuration in which the catheter is separate from the conduit; and a sheath coupled to the catheter, the sheath completely enclosing the catheter when the catheter is in the retracted configuration, and only partially enclosing the catheter when the catheter is in the extended configuration, the catheter configured to fluidically couple to an external reservoir at the proximal end of the catheter to allow a fluid to be transported to the external reservoir when the catheter is in the extended configuration; and an adapter configured to be coupled between the conduit and the sheath, the adapter configured to receive a portion of the catheter and to direct the catheter towards a target area, the adapter defines a lumen passing through an opening at a proximal end of the adapter and an opening at a distal end of the adapter, the adapter including at least one valve disposed in the lumen, wherein an inner surface of the adapter defining the lumen tapers from a first diameter on a proximal side of the lumen of the adapter to a second diameter, smaller than the first diameter, on a distal side of the lumen of the adapter and is configured to guide the catheter towards the target area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification