Needle stick protective apparatus for manual catheter placement devices
First Claim
1. A needle stick protector comprising:
- a hollow needle having a tip;
a vacuum chamber in flow communication with the hollow needle;
means for creating a vacuum within the vacuum chamber,an interface member, engaged with said means for creating vacuum, said interface member having a front portion slideable over the needle, wherein said front portion of the interface member slideable over the needle is also adapted to enclose the tip of said needle upon full forward advancement of said interface member, said forward advancement being initiated by said means for creating vacuum,an engaging means for converting a rearward displacement of said vacuum creating means into a forward displacement of said interface member,said means for creating vacuum being manually displaceable upon blood vessel penetration by said needle to enable a manually driven advancement of said interface member;
said interface member being irreversibly lockable in its advanced position by locking means to provide a needle stick protection with said front portion of said interface member.
0 Assignments
0 Petitions
Accused Products
Abstract
A needle stick protective apparatus for medical devices having a hollow needle with a sharp tip, a vacuum chamber in flow communication with the hollow needle and a vacuum creating piston-plunger. The apparatus includes an interface member having a rear arm for engaging the piston-plunger and a front portion plate with a needle guard slideable over the needle up to the needle tip to enclose it and to irreversibly lock upon enclosure of the needle tip, shielding the needle tip to provide protection against needle sticks. The sliding of the needle guard over the needle is initiated and sustained, and in certain embodiments is completed, by posterior displacement of the vacuum creating piston-plunger engaged with the arm of the interface member upon blood vessel penetration by the needle. An engagement member converts the rearward displacement of the piston-plunger into a forward displacement of the interface member with the needle guard up to the needle tip. The piston-plunger is manually displaceable to enable a manually driven advancement of the needle guard over the needle upon blood vessel penetration by the needle tip, by acting on the handle of the piston-plunger away and at a safe distance from the needle tip.
65 Citations
10 Claims
-
1. A needle stick protector comprising:
-
a hollow needle having a tip; a vacuum chamber in flow communication with the hollow needle; means for creating a vacuum within the vacuum chamber, an interface member, engaged with said means for creating vacuum, said interface member having a front portion slideable over the needle, wherein said front portion of the interface member slideable over the needle is also adapted to enclose the tip of said needle upon full forward advancement of said interface member, said forward advancement being initiated by said means for creating vacuum, an engaging means for converting a rearward displacement of said vacuum creating means into a forward displacement of said interface member, said means for creating vacuum being manually displaceable upon blood vessel penetration by said needle to enable a manually driven advancement of said interface member; said interface member being irreversibly lockable in its advanced position by locking means to provide a needle stick protection with said front portion of said interface member. - View Dependent Claims (2, 3, 4, 5, 6, 8)
-
-
7. A needle stick protector comprising:
-
a hollow needle having a tip; means for accelerating backflow of blood upon blood vessel penetration by said needle, an interface member engaged with said means for accelerating backflow of blood, said interface member having a front portion slideable over the needle, wherein said front portion of the interface member slideable over the needle is also adapted to enclose the tip of said needle upon full forward advancement of said interface member, said forward advancement being initiated by said means for accelerating backflow of blood, an engaging means for converting a rearward displacement of said means for accelerating backflow of blood into a forward displacement of said interface member, said means for accelerating backflow of blood being manually displaceable upon said blood vessel penetration to enable a manually driven advancement of said interface member; said interface member being irreversibly lockable in its advanced position by locking means to provide a needle stick protection with said front portion of said interface member.
-
-
9. A needle stick protection apparatus for medical devices having a hollow needle with a sharp tip, a vacuum chamber in flow communication with the hollow needle and a vacuum creating member within the vacuum chamber, comprising:
-
a vacuum creating member a needle an interface member having a front portion slideable over the needle, said front portion of the interface member being adapted to enclose the tip of said needle upon full forward displacement of said interface member, and engaging means for converting a rearward displacement of said vacuum creating member into a forward displacement of said interface member, said forward displacement of said interface member being initiated by said member for creating vacuum, said member for creating vacuum being manually displaceable upon blood vessel penetration by said needle to enable a manually driven advancement of said interface member, said interface member being irreversibly lockable in its advanced position by locking means to provide a needle stick protection with said front portion of said interface member. - View Dependent Claims (10)
-
Specification