Device for protecting and neutralizing a needle for medical use
First Claim
1. A device for protecting a needle for medical use or the like, the needle having a sharp end and a base end, comprising:
- a sleeve having a through bore defined on a given axis, said through bore being of a section that is not less than that of the needle to be protected;
a first link having first and second ends, said link being of a length “
L1”
defined between said two ends, wherein the first link is able to take at least three positions when the needle is positioned vertically upright with the sharp end of the needle above the base end of the needle, the three positions being an equilibrium starting position, an equilibrium in use position, and a locked position;
a first resilient return hinge means for connecting the first end of the first link to the sleeve, the resiliency of said first hinge means allowing said first link to takes up one or the equilibrium in use position and the equilibrium starting position, wherein the link makes an acute angle (ÿ
) with respect to the axis of the through bore, when no force is applied to the link, and the needle is positioned vertically upright with the sharp end of the needle above the base end of the needle;
a base means suitable for receiving the base end of the needle to be protected;
a first crank arm, said first crank arm being defined between first and second ends, said crank arm being of a length “
I1”
defined between its two ends, the length “
I1”
of the first crank arm being no greater than the length “
L1”
of the first link; and
first means for mounting each of said first and second ends of the first crank arm to pivot freely respectively on the second end of the first link and on the base means;
a second link having first and second ends said second link being of a length “
L2”
defined between said two ends;
second resilient return hinge means for connecting the first end of the second link to the sleeve, said second hinge means being organized so that said second link takes up a defined equilibrium position on a direction that makes an acute angle (ÿ
′
) with the axis of the through bore;
a second crank arm, said second crank arm being defined between first and second ends, said second crank arm being of a length “
I2”
defined between its two ends, the length “
I2”
of the second crank arm being no greater than the length “
L2”
of the second link; and
second means for mounting each of said first and second ends of the second crank arm to pivot freely respectively on the second end of the second link and on the base means.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to devices for protecting a needle 1 for medical use or the like and having a sharp end 2 and a base end 3. The device of the invention is essentially characterized by the fact that it comprises a sleeve 10 having a bore 11 on an axis 12 and of section not less than that of the needle to be protected, a link 13 of length “L1”, resilient return hinge means 19 for connecting one end 15 of the link 14 to the sleeve 10, the link taking up a defined equilibrium position on a direction making an acute angle α with the axis of the bore 11, base means 21 suitable for receiving the end 3 of the needle 1, a crank arm 22 of length “K1” no greater than the length “L1” of the link, and means 28, 30 for mounting each of the first and second ends of the crank arm 22 to pivot freely respectively on the end 17 of the link 13 and on the base means 21.
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Citations
24 Claims
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1. A device for protecting a needle for medical use or the like, the needle having a sharp end and a base end, comprising:
-
a sleeve having a through bore defined on a given axis, said through bore being of a section that is not less than that of the needle to be protected; a first link having first and second ends, said link being of a length “
L1”
defined between said two ends, wherein the first link is able to take at least three positions when the needle is positioned vertically upright with the sharp end of the needle above the base end of the needle, the three positions being an equilibrium starting position, an equilibrium in use position, and a locked position;a first resilient return hinge means for connecting the first end of the first link to the sleeve, the resiliency of said first hinge means allowing said first link to takes up one or the equilibrium in use position and the equilibrium starting position, wherein the link makes an acute angle (ÿ
) with respect to the axis of the through bore, when no force is applied to the link, and the needle is positioned vertically upright with the sharp end of the needle above the base end of the needle;a base means suitable for receiving the base end of the needle to be protected; a first crank arm, said first crank arm being defined between first and second ends, said crank arm being of a length “
I1”
defined between its two ends, the length “
I1”
of the first crank arm being no greater than the length “
L1”
of the first link; andfirst means for mounting each of said first and second ends of the first crank arm to pivot freely respectively on the second end of the first link and on the base means; a second link having first and second ends said second link being of a length “
L2”
defined between said two ends;second resilient return hinge means for connecting the first end of the second link to the sleeve, said second hinge means being organized so that said second link takes up a defined equilibrium position on a direction that makes an acute angle (ÿ
′
) with the axis of the through bore;a second crank arm, said second crank arm being defined between first and second ends, said second crank arm being of a length “
I2”
defined between its two ends, the length “
I2”
of the second crank arm being no greater than the length “
L2”
of the second link; andsecond means for mounting each of said first and second ends of the second crank arm to pivot freely respectively on the second end of the second link and on the base means. - View Dependent Claims (2, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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3. A device for protecting and neutralizing a needle for medical use or the like the needle having a sharp end and a base end, the device comprising:
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a sleeve having a through bore, said through bore having first and second outlets, said through bore being defined on a given axis and having a cross-section that is not less than that of the needle, the needle being suitable for sliding through said bore; a base secured to the base end of the needle; and resilient link means connecting the sleeve to the base, said resilient link means enabling the sleeve to slide along the needle, the needle passing through the bore of the sleeve via the first outlet thereof, said sleeve being suitable for taking up two extreme positions; a first sleeve position in which the sleeve surrounds the sharp end of the needle, said sharp end being situated at a given distance from the second outlet of the through bore; and a second sleeve position in which the face of the sleeve that includes the first outlet of the through bore is positioned adjacent to the base;
said resilient link means comprising at least;a first link having first and second ends, said link being or a length “
L1”
defined between said two ends;first resilient return hinge means for connecting the first end of the first link to the sleeve, said first hinge means being organized so that said first link takes up a defined equilibrium position on a direction that makes an acute angle (ÿ
) with the axis of the through bore;a first crank arm, said first crank arm being defined between first and second ends, said crank arm being of a length “
I1”
defined between its two ends the length “
I1”
of the first crank arm being no greater than the length “
L1”
of the first link; andfirst means for mounting each of said first and second ends of the first crank arm to pivot freely respectively on the second end of the first link and on the base means, wherein said device further comprises; a first channel portion made in the sleeve and intersecting the through bore in a portion lying between its second outlet and the sharp end of the needle when the sleeve is in the first sleeve position; a shutter slidably mounted in the first channel portion, said shutter being suitable for taking up a first shutter position and a second shutter position, the first shutter position being one in which it is not situated in the through bore, and means for applying thrust on said shutter when the sleeve comes close to the base on passing from the first shutter position to the second shutter position. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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Specification