CANNULA INSERTION DEVICE
First Claim
1. Apparatus comprising:
- a cannula insertion device comprising;
a frame;
a hub mounted to the frame and arranged to be slidably moveable from a first position in a first direction to a second position relative to the frame; and
a needle projecting in the first direction from the hub and carrying a detachable assembly including a cannula, the needle being shielded by the frame when the hub is in the first position;
the frame and hub arranged to allow the hub to be moved from the first position to the second position so as to insert the cannula into a patient and to be moved in a second, reverse direction backwards to a third position in which the frame shields the needlethe apparatus further comprising;
a housing for receiving the detachable cannula assembly, wherein the apparatus is configured such that the device is removably attached to the housing and is detachable from the housing only once the hub is in the third position.
2 Assignments
0 Petitions
Accused Products
Abstract
A cannula insertion device comprises an elongate frame (4) and a hub (5) mounted to the frame and arranged to be slidably moveable from a first position forwards along a longitudinal axis to a second position relative to the frame and a needle (11) projecting forwards from the hub and carrying a detachable cannula (2) assembly including a cannula. The frame and hub are arranged to allow the hub to be moved forwards from the first position to the second position so as to insert the cannula into a patient and to be drawn backwards to a withdrawn position. The needle is shielded by the frame when the hub is in the first position and also when in the withdrawn position.
33 Citations
19 Claims
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1. Apparatus comprising:
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a cannula insertion device comprising; a frame; a hub mounted to the frame and arranged to be slidably moveable from a first position in a first direction to a second position relative to the frame; and a needle projecting in the first direction from the hub and carrying a detachable assembly including a cannula, the needle being shielded by the frame when the hub is in the first position; the frame and hub arranged to allow the hub to be moved from the first position to the second position so as to insert the cannula into a patient and to be moved in a second, reverse direction backwards to a third position in which the frame shields the needle the apparatus further comprising; a housing for receiving the detachable cannula assembly, wherein the apparatus is configured such that the device is removably attached to the housing and is detachable from the housing only once the hub is in the third position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. (canceled)
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16. (canceled)
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17. (canceled)
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18. A method of inserting a cannula using an apparatus comprising a cannula insertion device comprising an frame, a hub mounted to the frame and arranged to be slidably movable in a first direction from a first position to a second position relative to the frame and a needle projecting in the first direction from the hub along the longitudinal axis and carrying a detachable cannula assembly including a cannula, the needle being shielded by the frame when the hub is in the first position, the apparatus further comprising a housing for receiving the detachable cannula assembly, wherein the apparatus is configured such that the device is removeably attached to the housing and is detachable from the housing only once the hub is in the third position, the method comprising:
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moving the hub in the first direction from the first position to the second position so as to insert the cannula into a patient;
middrawing the hub in a second, reverse direction to a third position in which the frame shields the needle; and detaching the cannula insertion device from the housing when the hub is in the third position.
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19-32. -32. (canceled)
Specification