Access device
First Claim
1. An access device for placing a medical article within a body space, comprising:
- a needle having an elongated needle body with a distal end and a hub from which the needle body extends, the elongated needle body comprising at least one side fenestration and an outer diameter;
a dilator slideably disposed on the needle body, comprising a dilator hub and an elongated dilator shaft that extends from the dilator hub, wherein the dilator shaft comprises at least one side fenestration in communication with the needle side fenestration, wherein the dilator shaft comprises an inner diameter that is less than the outer diameter of the needle, and wherein the dilator hub comprises a receiving portion;
a medical article comprising a tubular section and a hub, the tubular section being disposed on the dilator and defining a space between the medical article and the dilator in communication with the needle side fenestration through the dilator side fenestration, wherein at a least portion of the medical article is configured to allow visual determination of the presence of a body fluid within the space; and
an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage and to the atmosphere but hinders the passage of a body fluid.
13 Assignments
0 Petitions
Accused Products
Abstract
An access device for placing a medical article within a body space includes a needle, a dilator, and a medical article. The needle can include an elongated needle body with a distal end and a hub from which the needle body extends. The elongated needle body can include at least one side fenestration and an outer diameter. The dilator can be slideably disposed on the needle body and include a dilator hub and an elongated dilator shaft that extends from the dilator hub. The dilator shaft can include at least one side fenestration in communication with the needle side fenestration. The dilator shaft can also include an inner diameter that is less than the outer diameter of the needle. The medical article can include a tubular section and a hub. The tubular section can be disposed on the dilator and define a space between the medical article and the dilator in communication with the needle side fenestration through the dilator side fenestration. At a least portion of the medical article can be configured to allow visual determination of the presence of a body fluid within the space.
149 Citations
30 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 an elongated needle body with a distal end and a hub from which the needle body extends, the elongated needle body comprising at least one side fenestration and an outer diameter; a dilator slideably disposed on the needle body, comprising a dilator hub and an elongated dilator shaft that extends from the dilator hub, wherein the dilator shaft comprises at least one side fenestration in communication with the needle side fenestration, wherein the dilator shaft comprises an inner diameter that is less than the outer diameter of the needle, and wherein the dilator hub comprises a receiving portion; a medical article comprising a tubular section and a hub, the tubular section being disposed on the dilator and defining a space between the medical article and the dilator in communication with the needle side fenestration through the dilator side fenestration, wherein at a least portion of the medical article is configured to allow visual determination of the presence of a body fluid within the space; and an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage and to the atmosphere but hinders the passage of a body fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An access device for placing a medical article within a body space, comprising:
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a needle having an elongated needle body with a distal end and a hub comprising a distal portion from which the needle body extends, the elongated needle body comprising at least one side fenestration; a dilator comprising a dilator hub and an elongated dilator shaft that extends from the dilator hub, the dilator slideably disposed on the needle body and defining a space between the dilator shaft and the needle body in communication with the needle side fenestration, wherein the dilator hub comprises a receiving portion and at least a portion of the dilator shaft is configured to allow visual determination of the presence of a body fluid within the space; and an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage and to the atmosphere but hinders the passage of a body fluid. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. An access device for placing a medical article within a body space, comprising:
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a guidewire section comprising a guidewire and a guidewire hub; a needle disposed on the guidewire and having an elongated needle body with a distal end and a hub from which the needle body extends; a dilator disposed on the needle body, the needle and the dilator being moveable relative to each other from a first position, wherein the distal end of the needle lies distal of the dilator, and a second position wherein the distal end of the needle lies within the dilator, the dilator including a dilator hub and an elongated dilator shaft that extends from the dilator hub, and wherein the dilator hub comprises a receiving portion; an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage but hinders the passage of a body fluid; a locking mechanism operating between the needle and the dilator, the locking mechanism comprising a portion spaced from the dilator that inhibits movement of the needle relative to the dilator when in the second position, the locking mechanism being configured to allow movement of the needle from the first position toward the second position without engagement by the locking mechanism so as to lessen resistance to the movement; and a coupling mechanism operating between the dilator and the guidewire, the coupling mechanism comprising a T-shaped locking section disposed on the guidewire that interengages with the guidewire hub to form a reversible snap-fit grip. - View Dependent Claims (24, 25)
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26. An access device for placing a medical article within a body space, comprising:
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a needle having an elongated needle body with a distal end and a hub from which the needle body extends, the elongated needle body comprising at least one needle side fenestration; a dilator slideably disposed on the needle body, comprising a dilator hub and an elongated dilator shaft that extends from the dilator hub, wherein the dilator shaft comprises at least one dilator side fenestration in communication with the needle side fenestration and a raised ridge through which the dilator side fenestration passes, and wherein the dilator hub comprises a receiving portion; a medical article comprising a tubular section and a hub, the tubular section being disposed on the dilator and defining a space between the medical article and the dilator in communication with the needle side fenestration through the dilator side fenestration, wherein at a least portion of the medical article is configured to allow visual determination of the presence of a body fluid within the space; and an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage and to the atmosphere but hinders the passage of a body fluid. - View Dependent Claims (27, 28)
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29. An access device for placing a medical article within a body space, comprising:
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a needle having an elongated needle body with a distal end and a hub from which the needle body extends, the elongated needle body comprising at least one side fenestration; a dilator slideably disposed on the needle body, comprising a dilator hub and an elongated dilator shaft that extends from the dilator hub to a distal end, wherein the dilator shaft comprises at least one side fenestration in communication with the needle side fenestration, wherein the dilator distal end tapers at approximately 30 degrees, and wherein the dilator hub comprises a receiving portion; a medical article comprising a tubular section and a hub, the tubular section being disposed on the dilator and defining a space between the medical article and the dilator in communication with the needle side fenestration through the dilator side fenestration, wherein at a least portion of the medical article is configured to allow visual determination of the presence of a body fluid within the space; and an insert disposed within the dilator receiving portion, the insert comprising a through-hole configured to receive the needle body therethrough, the through-hole being slightly larger than the needle body so as to form a passage between the insert and the needle body that allows gases to pass through the passage and to the atmosphere but hinders the passage of a body fluid. - View Dependent Claims (30)
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Specification