Access device
First Claim
1. An access device for placing a medical article within a body space, comprising:
- a needle section including an elongated body and a needle hub, the elongated body having distal and proximal ends, the distal end being configured for insertion into a patient'"'"'s body, the proximal end being coupled with the needle hub;
a dilator portion including a dilator and a dilator hub, the dilator being coaxially disposed and slideable over the elongated body of the needle section with the dilator hub being disposed distal of the needle hub;
a sheath section comprising a sheath and a sheath hub, the sheath being coaxially disposed and slideable over the dilator with the sheath hub being disposed distal of the dilator hub;
a first locking mechanism operably disposed between the needle hub and the dilator hub to inhibit at least unintentional axial movement between the needle section and the dilator portion when said first locking mechanism is engaged; and
a second locking mechanism operably disposed between the dilator hub and the sheath hub to inhibit at least unintentional axial movement between the dilator portion and the sheath section when said second locking mechanism is engaged;
wherein each of said first and second locking mechanisms is configured to be engaged by moving the respective hubs in a non-axial manner relative to each other, and wherein the first locking mechanism is configured to move in a manner different from the manner in which the second locking mechanism is engaged.
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0 Petitions
Accused Products
Abstract
An access device places a medical article within a body space of a patient. The device has a needle section that includes an elongated body and a needle hub. The device further includes a dilator portion that has a dilator and a dilator hub. The dilator is coaxially disposed and slideable over the elongated body of the needle section. The device further includes a sheath section that has a sheath and a sheath hub. The sheath is coaxially disposed and slideable over the dilator. The device further includes a first locking mechanism operably disposed between the needle hub and the dilator hub to inhibit at least unintentional axial movement between the needle section and the dilator portion and a second locking mechanism operably disposed between the dilator hub and the sheath hub to inhibit at least unintentional axial movement between the dilator portion and the sheath section.
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Citations
23 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 section including an elongated body and a needle hub, the elongated body having distal and proximal ends, the distal end being configured for insertion into a patient'"'"'s body, the proximal end being coupled with the needle hub; a dilator portion including a dilator and a dilator hub, the dilator being coaxially disposed and slideable over the elongated body of the needle section with the dilator hub being disposed distal of the needle hub; a sheath section comprising a sheath and a sheath hub, the sheath being coaxially disposed and slideable over the dilator with the sheath hub being disposed distal of the dilator hub; a first locking mechanism operably disposed between the needle hub and the dilator hub to inhibit at least unintentional axial movement between the needle section and the dilator portion when said first locking mechanism is engaged; and a second locking mechanism operably disposed between the dilator hub and the sheath hub to inhibit at least unintentional axial movement between the dilator portion and the sheath section when said second locking mechanism is engaged; wherein each of said first and second locking mechanisms is configured to be engaged by moving the respective hubs in a non-axial manner relative to each other, and wherein the first locking mechanism is configured to move in a manner different from the manner in which the second locking mechanism is engaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An access device for placing a medical article within a body space, comprising:
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a needle section including an elongated needle body with a sharp distal tip and a needle hub from which the needle body extends; a dilator portion including a dilator and a dilator hub fixed to the dilator, the dilator being coaxially disposed and slideable over the needle body with the dilator hub being disposed distal of the needle hub; a sheath section comprising a sheath and a sheath hub, the sheath being coaxially disposed and slideable over the dilator with the sheath hub being disposed distal of the dilator hub; and a locking mechanism disposed within the dilator hub and selectively operating between the needle section and the dilator hub, the locking mechanism being configured to arrest axial movement of the needle body at least in the distal direction once the distal tip of the needle body is drawn into the dilator portion to sheath the distal tip. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An access device for placing a medical article within a body space, comprising:
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a dilator hub having a passageway configured to receive an elongated needle, the needle having at least one side receptacle; one or more fingers or tangs disposed in the dilator hub and configured to engage with the at least one side receptacle at least when the needle is retracted through the passageway; and a locking plate and a slot, the slot being disposed in the dilator hub so as to slidingly receive the locking plate, wherein the one or more fingers or tangs are disposed on said locking plate.
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20. An access device for placing a medical article within a body space, comprising:
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a needle section including an elongated body and a needle hub, the elongated body having distal and proximal ends, the distal end being configured for insertion into a patient'"'"'s body, the proximal end being coupled with the needle hub; a dilator portion including a dilator and a dilator hub, the dilator being coaxially disposed and slideable over the elongated body of the needle section with the dilator hub being disposed distal of the needle hub and the dilator having a distal end; a sheath section comprising a sheath and a sheath hub, the sheath being coaxially disposed and slideable over the dilator with the sheath hub being disposed distal of the dilator hub and the sheath having a distal end; a first locking mechanism operably disposed between the needle hub and the dilator hub to inhibit at least unintentional axial movement between the needle section and the dilator portion when said first locking mechanism is engaged; and a second locking mechanism operably disposed between the dilator hub and the sheath hub to inhibit at least unintentional axial movement between the dilator portion and the sheath section when said second locking mechanism is engaged; wherein when the locking mechanisms are engaged to inhibit unintentional axial movement, a first distance between the distal end of the needle and the distal end of the dilator is greater than a second distance between the distal end of the dilator and a distal end of the sheath. - View Dependent Claims (21, 22, 23)
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Specification