Assembly with a guide tube, a fixator for attaching to a blood vessel, and a pump
First Claim
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1. An assembly, comprising:
- a guide tube having a distal end for introduction into a blood vessel and a proximal end;
a fixator attached to the guide tube and configured to releasably attach to an inner side of the blood vessel, the fixator being configured to allow blood flow in the blood vessel during transport of liquid to or from the blood vessel, the fixator includinga deformable portion having a central portion configured to attach to the inner side of the blood vessel at a length thereof, along a first longitudinal direction of the blood vessel,a distal part attached to the deformable portion, the distal part including a distal sleeve configured to slide relative to the guide tube, anda proximal part attached to the deformable portion, the proximal part including a proximal sleeve configured to slide relative to the guide tube;
a pump configured to transport a liquid to the blood vessel through the guide tube or from the blood vessel through the guide tube; and
a stopper fixed to the guide tube and configured to prevent the fixator from travelling distally beyond the stopper based on restricting the distal sleeve from sliding distally relative to the stopper,wherein,the fixator is configured to move toward the proximal end of the guide tube independently of the guide tube and unrestricted by the stopper, concurrently with the fixator maintaining attachment to the inner side of the blood vessel and based on the proximal sleeve and the distal sleeve sliding relative to the guide tube.
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Accused Products
Abstract
A fixator assembly comprising a fixator for fixing inside a blood vessel, a guide tube attached to the fixator and a pump for supplying a liquid to the blood vessel or from the blood vessel via the guide tube. Blood flow past the fixator is possible during pumping so that critical situations are avoided. A method of providing a liquid to a blood vessel using the assembly is also claimed. Sampling or liquid dosing thus may be performed during extended periods of time while performing this at a well-defined position in the blood vessel and potentially close to or at the desired position in the person.
74 Citations
20 Claims
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1. An assembly, comprising:
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a guide tube having a distal end for introduction into a blood vessel and a proximal end; a fixator attached to the guide tube and configured to releasably attach to an inner side of the blood vessel, the fixator being configured to allow blood flow in the blood vessel during transport of liquid to or from the blood vessel, the fixator including a deformable portion having a central portion configured to attach to the inner side of the blood vessel at a length thereof, along a first longitudinal direction of the blood vessel, a distal part attached to the deformable portion, the distal part including a distal sleeve configured to slide relative to the guide tube, and a proximal part attached to the deformable portion, the proximal part including a proximal sleeve configured to slide relative to the guide tube; a pump configured to transport a liquid to the blood vessel through the guide tube or from the blood vessel through the guide tube; and a stopper fixed to the guide tube and configured to prevent the fixator from travelling distally beyond the stopper based on restricting the distal sleeve from sliding distally relative to the stopper, wherein, the fixator is configured to move toward the proximal end of the guide tube independently of the guide tube and unrestricted by the stopper, concurrently with the fixator maintaining attachment to the inner side of the blood vessel and based on the proximal sleeve and the distal sleeve sliding relative to the guide tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of providing a liquid to a blood vessel of a body or removing liquid from the blood vessel of the body, the method comprising:
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providing a fixator connected to a stopper at a distal end of a guide tube, the stopper fixed to the guide tube, the guide tube also having a proximal end, the fixator including a deformable portion having a central portion configured to attach to an inner side of the blood vessel at a length thereof, along a first longitudinal direction of the blood vessel, a distal part attached to the deformable portion, the distal part including a distal sleeve configured to slide relative to the guide tube, and a proximal part attached to the deformable portion, the proximal part including a proximal sleeve configured to slide relative to the guide tube; positioning the fixator and the distal end of the guide tube within the blood vessel of the body so that the proximal end of the guide tube is positioned outside the body; detaching the fixator from the stopper, such that the stopper prevents the fixator from travelling distally beyond the stopper, and the fixator is configured to move toward the proximal end of the guide tube independently of the guide tube and unrestricted by the stopper, concurrently with the fixator maintaining attachment to the inner side of the blood vessel; and introducing the liquid into the blood vessel or withdrawing liquid from the blood vessel of the body via the guide tube while allowing blood flow in the blood vessel of the body. - View Dependent Claims (17, 18, 19, 20)
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Specification