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US 8,465,441 B2Granted
Cannula with introducer, needle protecting guard and blood collecting system
OwnerKadiyali Madhava Srivatsa, Martina Benzinginventors
Life of this patent
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Abstract
A cannula introducing device comprises an elongate body (10) having a needle (12) projecting from a front end, an operating element (24) for displacement longitudinally of the body (10), a plunger (16) disposed at the front end of the body (10), and a coupling means (18), such as a flexible wire, coupling the operating element (24) and the plunger (16), arranged so that retraction of the operating element (24) serves to advance the plunger (16) over the needle (12) and so advance the cannula (30) which is disposed over the needle.
Claims20
A cannula introducing device comprising:
- an elongate body having a first end portion and a second end portion, a needle projecting from said first end portion, a length extending between said first end portion and said second end portion, and an elongated groove or channel formed along at least a portion of said length;
- an operating member slidably positioned within said groove or channel of said body, said operating member being configured to selectively move along said elongated groove or channel, wherein at least a portion of said operating member projects outwardly from said elongated groove or channel, said operating member being configured to be engaged manually by a user;
- a plunger disposed at said first end portion of said body;
- and
- an elongate flexible member having a first end attached to said operating member and a second end attached to said plunger, said flexible member extending along said elongated groove or channel between said operating member and said plunger, said elongated groove or channel including a passage having a first portion which extends from a rear end of said elongated groove or channel and curves round to a second portion which extends forwardly to said first end portion of said body, said flexible member being positioned and configured such that movement of said operating member along said elongated groove or channel of said body in a first direction moves said flexible member to push said plunger forwardly along said needle.
2 more elements
A cannula introducing device comprising:
- an elongate body arranged to receive a fluid-collecting container for receiving blood or other fluid, said body having:
- a first end portion and a second end portion;
- a needle projecting from said first end portion configured to deliver blood or other fluid to the fluid-collecting container;
- a length extending between said first end portion and said second end portion;
- an elongated groove or channel formed along at least a portion of said length;
- an operating member slidably positioned within said groove or channel of said body, said operating member being configured to selectively move along said elongated groove or channel;
- a plunger disposed at said first end portion of said body;
- and
- an elongate flexible member having a first end attached to said operating member and a second end attached to said plunger, said flexible member being positioned and configured such that movement of said operating member along said elongated groove or channel of said body in a first direction moves said flexible member to advance said plunger along said needle;
- and
- wherein said body further includes an internal chamber configured to receive blood or other fluid through said needle, said chamber being provided with a second plunger which is configured to be displaced upon displacement of said operating member or of a secondary operating member in said first direction for a piercing needle of said second plunger to pierce a membrane closing the end of said fluid-collecting container.
8 more elements
Dependencies are inferred from the claim text.