Access device
First Claim
1. An access device for placing a medical article within a body space, comprising:
- a needle having a needle body and an interior bore;
a dilator coaxially disposed about the needle body and having a dilator shaft;
a medical article coaxially disposed about the dilator;
a plurality of openings extending through a side of at least one of the needle body and the dilator shaft;
at least one opening in the other one of the needle body and dilator shaft, the plurality of openings being spaced about the one of the needle body or dilator shaft so that at least one of the plurality of openings at least partially overlaps the at least one opening in the other one of the needle body and dilator shaft when the needle body is rotationally clocked relative to the dilator shaft in a first position and in a second position, the second position being different than the first position;
a viewing space disposed between the dilator and the medical article;
at least one passageway connecting the viewing space with the interior bore of the needle body, the passageway being defined at least in part by the plurality of openings and the at least one opening;
a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; and
a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body.
12 Assignments
0 Petitions
Accused Products
Abstract
An access device places a medical article within a body space of a patient. The device has a needle that includes a needle body and hub. The device further includes a dilator coaxially disposed and slideable over the needle body and a medical article. A viewing space is disposed between the dilator and the medical article with at least one passageway or conduit connecting the viewing space with the interior bore of the needle body. The passageway is defined at least in part by openings through the sides of the needle and dilator. At least a portion of the conduit or passageway can be defined by one or more grooves between the needle and dilator. The device can further include a guidewire and an interlock between the guidewire and the needle and/or dilator. The device can further include one or more stops disposed between the guidewire and the needle and/or dilator to limit the extent to which the guidewire can be moved (e.g., advanced) relative to the needle or inhibit such relative movement (e.g., backwards movement).
218 Citations
58 Claims
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1. An access device for placing a medical article within a body space, comprising:
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a needle having a needle body and an interior bore; a dilator coaxially disposed about the needle body and having a dilator shaft; a medical article coaxially disposed about the dilator; a plurality of openings extending through a side of at least one of the needle body and the dilator shaft; at least one opening in the other one of the needle body and dilator shaft, the plurality of openings being spaced about the one of the needle body or dilator shaft so that at least one of the plurality of openings at least partially overlaps the at least one opening in the other one of the needle body and dilator shaft when the needle body is rotationally clocked relative to the dilator shaft in a first position and in a second position, the second position being different than the first position; a viewing space disposed between the dilator and the medical article; at least one passageway connecting the viewing space with the interior bore of the needle body, the passageway being defined at least in part by the plurality of openings and the at least one opening; a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; and a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An access device for placing a medical article within a body space, comprising:
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a needle having a needle body; a dilator coaxially disposed about the needle body and having a dilator shaft; a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body; and an interlock between the guidewire and at least one of the needle and the dilator. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An access device for placing a medical article within a body space, comprising:
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a needle having a needle body; a dilator coaxially disposed about the needle body; a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; and a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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40. An access device for placing a medical article within a body space, comprising:
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a needle having a needle body; a dilator coaxially disposed about the needle body and having a dilator shaft; a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body; and one or more stops disposed between the guidewire and at least one of the needle and the dilator. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. An access device for placing a medical article within a body space, comprising:
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a needle having a needle body; a dilator coaxially disposed about the needle body; a lock member configured to move between a lock state and an unlock state, the lock member connecting the needle to the dilator so as to inhibit at least relative axial movement between at least a portion of the needle and at least a portion of the dilator when the lock member is in at least the lock state; and a guidewire configured to be coaxially disposed within at least a portion of the needle body, the guidewire comprising a release member separable from the lock member and configured to engage with the lock member so as to at least move the lock member from the lock state to the unlock state when the guidewire is coaxially advanced within the needle body wherein the lock member comprises hinged clips that releasably attach to at least one of the needle and dilator, and the release member is configured to engage the hinged clips to rotate the clips and cause them to release the at least one of the needle and the dilator.
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Specification