US20070100296A1 - Single-handedly actuatable shield for needles - Google Patents

Single-handedly actuatable shield for needles Download PDF

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Publication number
US20070100296A1
US20070100296A1 US11/263,025 US26302505A US2007100296A1 US 20070100296 A1 US20070100296 A1 US 20070100296A1 US 26302505 A US26302505 A US 26302505A US 2007100296 A1 US2007100296 A1 US 2007100296A1
Authority
US
United States
Prior art keywords
guard
proximal
distal
needle
needle cannula
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/263,025
Other languages
English (en)
Inventor
Charles Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Becton Dickinson and Co filed Critical Becton Dickinson and Co
Priority to US11/263,025 priority Critical patent/US20070100296A1/en
Assigned to BECTON, DICKINSON AND COMPANY reassignment BECTON, DICKINSON AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HWANG, CHARLES G.
Priority to JP2008538907A priority patent/JP4990905B2/ja
Priority to ES16163983T priority patent/ES2813384T3/es
Priority to CA2627467A priority patent/CA2627467C/en
Priority to SG201008020-8A priority patent/SG166807A1/en
Priority to BRPI0618093A priority patent/BRPI0618093B8/pt
Priority to EP06826219.5A priority patent/EP1951342B1/de
Priority to ES06826219.5T priority patent/ES2593414T3/es
Priority to PCT/US2006/040779 priority patent/WO2007053309A1/en
Priority to EP16163983.6A priority patent/EP3067084B1/de
Priority to AU2006309137A priority patent/AU2006309137B2/en
Publication of US20070100296A1 publication Critical patent/US20070100296A1/en
Priority to US12/249,259 priority patent/US8066679B2/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A61M2005/325—Means obstructing the needle passage at distal end of a needle protection sleeve
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means

Definitions

  • the subject invention relates to single-handedly actuatable shield for hypodermic needles, blood collection needles, catheter needles and other medical implements to help prevent accidental needle sticks.
  • the prior art has addressed the problem of post-injection unshielded needle cannula by providing sharps collectors and a variety of needle assemblies having self-contained shields which are activatable after injection.
  • This shieldable needle assembly includes a needle guard which is slidably movable along the needle cannula from a proximal position substantially adjacent to a hub to a distal position surrounding the distal end of the needle cannula.
  • the needle assembly further includes a hinged arm for initiating movement of the needle guard and for controlling the amount of movement of the needle guard along the needle cannula.
  • the hinged arm assembly includes a proximal segment hingedly connected to the needle hub and a distal segment articulated to portions of the proximal segment remote from the hub and to the needle guard. In the collapsed needle exposing position the hinged arm is folded upon itself and is substantially adjacent to the hub.
  • distally directed forces may be exerted on the hinged arm to urge the hinged arm assembly into an extended condition in which its segments are substantially linearly arrayed and generally parallel to the needle cannula.
  • the dimensions of the segments of the hinged arm assembly are selected to permit distal portions of the needle guard to move beyond the distal end of the needle cannula and prevent proximal portions of the needle guard from moving beyond the end of the needle cannula. Movement of the hinged arm assembly from the collapsed condition to the extended condition may be facilitated by an energy source such as a spring intended to propel the needle guard in a distal direction toward the needle shielding position.
  • a shieldable needle assembly of the present invention includes a needle cannula having a proximal end and a distal tip.
  • a guard having a proximal end, an opposed distal end and a side wall extending therebetween is slidably movable along the needle cannula from a first position substantially adjacent to the proximal end of the needle cannula to a second position where the distal tip of the needle cannula is intermediate the opposed proximal and distal ends of the guard.
  • a hinged arm having proximal and distal segments articulated to one another through an intermediate hinge is provided for movement of the hinged arm between a first position where the segments are substantially collapsed onto one another and a second position where the segments are extended from one another.
  • the proximal segment of the hinged arm is articulated to a portion of the needle assembly adjacent to the proximal end of the needle.
  • the distal end of the distal segment of the hinged arm is articulated to the guard.
  • the proximal and distal segments of the hinged arm have respective lengths for permitting the guard to move from the first position to the second position on the needle cannula and for preventing the guard from moving distally beyond the second position.
  • An energy storing and releasing structure such as a spring, is connected to the hinged arm for urging the guard along the needle cannula toward the second needle protecting position. Structure is provided for limiting the reverse rotation of the proximal and distal segments around the intermediate hinge after the guard is in the second position.
  • Structure for limiting reverse rotation of the intermediate hinge includes a discontinuity on the hinge and an arm discontinuity on either of the proximal and distal segments of the hinged arm.
  • the structure for limiting reverse rotation may include a radial projection on a hinge pin and a discontinuity on the proximal segment wherein the hinge projection snaps substantially irreversibly past the arm discontinuity as the guard moves onto the second position.
  • Structure may also be provided for limiting continued rotation of the proximal and distal segments around the intermediate hinge after the guard is in its second position.
  • the structure for limiting further continued open rotation may include a contact surface on the proximal end of the distal segment and a contact surface on the distal end of the proximal element. These contact surfaces are positioned to contact each other after the guard is in its second position.
  • the contact surfaces may be on one or more raised projections.
  • Structure may also be provided to limit upward angular rotation of the guard with respect to the distal element when the guard is in its second position.
  • Such structure may include a stop surface on the guard and a stop surface on the distal end of the distal element to limit upward angular rotation of the guard to an angle equal to or slightly more than the angle between the guard and the distal element when the guard is in its first position.
  • the proximal end of the guard may further include a proximal wall having an aperture therethrough wherein the needle cannula slidably extends through the aperture of the proximal wall of the guard.
  • the distal end of the guard includes a distal wall having an aperture slidably engaging around the needle cannula when the guard is disposed at its first position. The distal wall is positioned distally beyond the tip of the needle cannula when the guard is in its second position.
  • the shieldable needle assembly may further include a clip.
  • the clip is configured to cover the tip of the needle cannula when the guard is in the second position on the needle cannula.
  • the clip may be made of metal such as stainless steel or another material highly resistant to puncturing.
  • the shieldable needle assembly may further include a needle hub securely engaging the proximal end of the needle cannula.
  • the proximal segment of the hinge arm is articulated to the hub.
  • the shieldable needle assembly may include the hub and proximal segment of the hinge arm being unitary with one another.
  • the shieldable needle assembly may include spring means which is substantially unbiased when the guard is in the first position.
  • the spring means may be a coil spring.
  • the coil spring may be positioned to extend from a portion of the needle assembly adjacent to the proximal end of the needle cannula to a location on the proximal segment of the hinged arm.
  • the spring means may include an over-center hinge extending from the proximal segment of the hinged arm and said portion of the needle assembly adjacent to the proximal end of the needle cannula.
  • the shieldable needle assembly may further include a hypodermic syringe barrel engaging the proximal end of the needle cannula wherein the proximal segment of the hinged arm is articulated to the hypodermic syringe barrel.
  • FIG. 1 is a perspective view of a hypodermic syringe having a shieldable needle assembly of the present invention.
  • FIG. 2 is a partial side elevational view of the syringe and shieldable needle assembly of FIG. 1 .
  • FIG. 3 is a cross-sectional view of the shieldable needle assembly of FIG. 1 taken along line 3 - 3 .
  • FIG. 4 is a cross-sectional view similar to FIG. 3 but showing the shield in a partially extended position.
  • FIG. 5 is a perspective view of the shieldable needle assembly showing the needle shield in its fully extended condition shielding the tip of the needle cannula.
  • FIG. 6 is a side-elevational view of the needle assembly of FIG. 5 .
  • FIG. 7 is a cross-sectional view of the needle shield assembly of FIG. 5 taken along line 7 - 7 .
  • FIG. 8 is an enlarged perspective view of the intermediate hinge of the needle assembly of FIG. 6 .
  • FIG. 9 is a side elevational view of the intermediate hinge of FIG. 8 .
  • FIG. 10 is a side elevational view of the needle shield assembly showing structure to help prevent further inward rotation of the intermediate hinge after the needle tip has been shielded.
  • FIG. 11 illustrates another structure to prevent further inward rotation of the intermediate hinge.
  • FIG. 12 is still another structure for preventing further inward rotation of intermediate hinge.
  • FIG. 13 is a side elevation view of the needle shield assembly of the present invention showing structure for preventing upward rotation of the needle guard after it is in its needle shielding position.
  • FIG. 14 is a cross-sectional view similar to FIG. 4 showing an alternative embodiment wherein the spring element is a coil spring.
  • Needle assembly 20 includes a needle cannula 21 having a proximal end 22 , a distal tip 23 and a lumen 25 extending therethrough.
  • Distal tip 23 in this embodiment includes a bevel 26 aligned at an acute angle to the longitudinal axis of the needle cannula.
  • Needle assembly 20 further includes a needle hub 27 which is securely engaged to proximal end 22 of the needle cannula. Needle assembly 20 may be connected to a fluid transfer device such as hypodermic syringe 28 as shown in FIGS. 1 and 2 .
  • the syringe includes a barrel 29 having opposed proximal and distal ends 31 and 32 respectively and a fluid chamber 33 extending therebetween. Proximal end 31 of the syringe barrel is open and slidably receives a plunger 34 .
  • Distal end 32 of the syringe barrel includes an elongate tip 35 having a passageway 37 extending therethrough.
  • Distal end 32 of the syringe barrel preferably includes a luer collar 38 concentrically surrounding tip 35 .
  • the luer collar includes an internal thread which may be engaged by the needle hub.
  • Tip 23 of needle cannula 21 may become contaminated after being used to deliver medication to a patient.
  • Needle assembly 20 enables unimpeded use of the needle cannula and hypodermic syringe and insures effective shielding of tip 23 of the needle cannula immediately after withdrawal from a patient, as explained herein.
  • the preferred shieldable needle assembly 20 includes a guard 40 which includes a cap portion 41 and a clip 43 .
  • Cap 41 is preferably molded from a thermoplastic material to include a side wall 44 preferably extending circumferentially through more than 180 degrees, and having opposed proximal and distal ends 45 and 46 respectively.
  • Side wall 46 is preferably longer than bevel tip 18 of the needle cannula.
  • Cap 41 further includes an end wall 47 extending across distal end 46 of side wall 44 .
  • End wall 47 includes an aperture 49 which is slidable along needle cannula 21 .
  • Clip 43 of needle guard 40 is retained between needle cannula 21 and cap 41 .
  • Clip 43 includes a distal wall 50 that is configured to be biased against needle cannula 21 . However, sufficient distal movement of cap 41 will cause distal wall 50 of the clip to pass beyond tip 23 of the needle cannula. Distal wall 50 of the clip will then be biased over tip 23 as illustrated in FIG. 7 .
  • Clip 43 is preferably made of metal such as stainless steel or other material exhibiting good penetration resistance. Clip 43 provides more protection against penetration by tip 23 than could be provided by a plastic cap alone. Additionally, a clip made of metal or other puncture-resistant material enables the plastic of the shieldable needle assembly to be selected for its resiliency and other performance characteristics with less concern for the ability of the plastic to resist needle punctures.
  • Needle assembly 20 further includes a hinged arm assembly 51 having a proximal segment 53 and a distal segment 55 which are articulated to one another at hinge pins 56 .
  • Proximal segment 53 of hinged arm assembly 51 is articulated to hub 27 at a proximal hinge 57 .
  • Distal segment 55 of the hinged arm assembly is articulated to cap 41 at a distal hinge 58 .
  • Hub 27 , cap 41 and hinged arm 51 may be unitary with one another. However, in the preferred embodiment shown herein proximal and distal segments 53 and 55 are snapped into engagement with one another through hinge pins 56 .
  • Proximal hinge 57 between hub 27 and proximal segment 53 of the hinged arm assembly is preferably an over-center spring hinge.
  • hinge 57 includes a substantially non-biasing hinge member 59 and spring element 61 .
  • Non-biasing hinge member 59 defines the rotational path about which the proximal segment of the hinged arm assembly will rotate relative to the needle hub.
  • Spring element 61 in this preferred embodiment includes first and second segments 62 and 63 which are substantially orthogonally aligned to one another in an unbiased condition, as shown in FIG. 2 .
  • first and second segments 62 and 63 of the spring element can be resiliently deflected from the unbiased angle alignment into a more linear alignment.
  • distal segment 55 will rotate into substantially parallel alignment with the needle cannula and guard 40 will slide distally toward tip 23 of the needle cannula.
  • hinge 57 is in a stable condition in its FIG. 2 orientation with substantially no stored energy exerting pressure on the plastic components of the shieldable needle assembly. Stored energy acting on plastic can affect the reliability and performance of the part. In this instance, however, the stored energy is accumulated only after proximal segment 53 of hinged arm assembly 51 is moved from the stable position of FIG. 2 into the FIG. 4 orientation. The accumulated energy then performs work for the user by moving the hinged arm assembly toward its FIGS. 6 and 7 orientation. Hinge 57 will again be stable with substantially no stored energy FIGS. 6 and 7 orientation where the needle cannula is safely shielded. Another feature of the present invention is that the spring element while in the orientation of FIGS. 1 and 2 will resist accidental or inadvertent pressure which would tend to force the guard toward the second position where the clip covers the end of the needle.
  • Proximal segment 63 of hinged arm assembly 51 includes a pair of parallel spaced-apart arms 64 and 65 which terminate at the linear bearing slots 67 and 68 respectively.
  • the bearing slots are dimensioned to receive hinge pins 56 which in this embodiment are unitarily molded as part of distal segment 55 of the hinged arm assembly.
  • distal segment 55 can be articulated around hinge pins 56 into a collapsed position.
  • the relatively small dimensions of each segment 52 and 53 , and the nesting of those segments in a collapsed condition substantially eliminates visual or physical obstruction of the cannula by the hinged arm assembly.
  • the hinged arm assembly is preferably aligned to define a plane which passes symmetrically through the bevel 26 on the tip of the needle cannula.
  • the hinged arm assembly can be used as a guide to achieve a desired alignment of the bevel prior to insertion of the needle into a vein in the patient. If it is desirable to have the bevel tip facing upwardly, the user of the syringe merely orients the collapsed hinged arm assembly of FIGS. 1-3 to point upwardly.
  • the hinged arm assembly can also facilitate the initial threaded engagement of the needle hub into the luer collar 38 of syringe barrel 29 .
  • proximal and distal segments 53 and 55 of the hinged arm assembly can be articulated about hinges 56 , 57 and 59 toward an extended position, with guard 40 slidably telescoping along the needle cannula and away from the needle hub.
  • This extension of the hinged arm assembly from the collapsed condition of FIGS. 1-3 to the extended position of FIGS. 5-7 can be generated entirely from locations proximally on needle cannula 21 .
  • proximal member 53 of the hinged arm assembly extends radially outwardly from the needle cannula sufficiently to define a proximally-facing actuation surface extending transversely from the syringe barrel.
  • Proximal and distal segments of the hinged arm assembly are dimensioned to permit end wall 47 of cap 41 and distal wall 50 of clip 43 to pass distally beyond tip 23 of the needle cannula as shown in FIG. 7 .
  • the respective length of the proximal and distal segments 53 and 55 of the hinged arm assembly prevent complete separation of the guard from the needle cannula.
  • the configuration of clip 43 causes the needle cannula to be biasingly trapped by clip 43 .
  • needle assembly After the hinged arm assembly is extended to the position illustrated in FIGS. 5-7 needle assembly is not reusable and should be disposed of in a safe manner.
  • the normal forces associated with safe disposal of needles and syringes will not re-expose the needle tip.
  • a person applying excessive bending forces to the needle assembly, after use, in an attempt to improperly re-expose the needle tip by extending the guard past the end of the needle tip would likely bend the needle cannula and make it unsuitable for use.
  • additional features are provided to prevent excessive additional rotation of the hinged element after the tip of the needle cannula is shielded.
  • the preferred structure for limiting reverse rotation of the intermediate hinge includes a discontinuity on one or both hinge pins 56 for engaging a discontinuity on either the proximal or the distal segment of the hinge arm depending on which arm the hinge pin is attached to.
  • hinge pin is attached to the proximal end of the distal segment and the discontinuity is contained in the distal end of the proximal segment.
  • radial projection 70 is positioned on hinge pins 56 and is positioned to snap over projections 71 in bearing slots 67 and 68 .
  • Radial projection 70 and projection 71 are shaped to pass over each other with minimal resistance as the hinge moves in direction A, transverse to the needle cannula while being shaped to strongly resist reverse rotation of the intermediate hinge, i.e., moving the hinge in direction B transverse to the needle cannula. This feature is especially useful if unauthorized reuse is attempted by disabling or removing the metal clip to re-expose the needle through the distal end of the guard.
  • a recess may be positioned in one or both bearing slots to contain the radial projection or projections while the hinged arm is in its first needle exposing position wherein segments 53 and 55 are substantially collapsed on one another.
  • Radial projections 70 on hinge pins 56 are positioned in recesses 72 when the hinged arm is in its first needle exposing position. In this position the radial projections are in a relaxed, stress-free, state and have little or no contact with any portion of the bearing slots 67 and 68 .
  • This relationship of the projections 70 and recesses 72 can help stabilize the hinged arm assembly and help hold it in its first needle expositing position. In this case, initial movement of the hinged arm assembly toward its second needle protecting position will require an additional force to snap the projections 70 out of the recesses 72 .
  • both contact surfaces take the form of radial projections 76 and 77 respectively and contact each other as the hinge pins move in direction A.
  • FIG. 11 illustrates another alternative structure for limiting continued opening rotation of the proximal and distal segments around the intermediate hinge after the guard is in its needle protecting position.
  • hinge pins 156 include radial lugs 170 and ledges 171 in the bearing slots. The ledges and the radial lugs are positioned to abruptly resist further opening rotation of the intermediate hinge after the guard is in its needle protecting position.
  • FIG. 12 illustrates another alternative structure for limiting continued open rotation of the intermediate hinge.
  • hinge pins 256 each contain a radial projection 270 which is similar to the radial projection 70 illustrated in FIGS. 8 and 9 .
  • the bearing slots include a resisting surface 271 which resists further opening rotation of the intermediate hinge.
  • This embodiment may also include an inwardly-directed projection on each of the bearing slots to also resist reverse rotation of the intermediate hinge after the needle guard is in its second needle protecting position.
  • FIG. 13 illustrates another alternative embodiment of the present invention.
  • a stop surface 80 on cap 41 of guard 40 and a stop surface 81 on the distal end of distal segment 55 are positioned to limit further angular upward rotation (indicated by letter C).
  • This feature is a further safeguard to prevent improper forceful re-exposure of the needle tip.
  • the stop surfaces 80 and 81 have to be positioned as far apart as necessary for the hinged assembly to collapse upon itself in the needle expositing position.
  • FIG. 14 illustrates an alternative embodiment wherein the spring element is a coil spring.
  • needle assembly 320 includes a needle cannula 321 and a guard 340 slidably movable along the needle cannula from a first position substantially adjacent to a hub 327 to a second position wherein a distal tip of the needle cannula is within a guard.
  • needle assembly 320 has a hinged arm 351 having a proximal segment 353 and a distal segment 355 articulated to one another through hinge 356 for movement between the first and second position.
  • a coil spring 361 preferably extends from the needle hub to proximal segment 353 .
  • Coil spring 361 is stretched by moving hinged arm 353 from the needle exposing position where the guard that is adjacent to the hub toward the needle protecting position as illustrated in FIG. 14 . To achieve orientation of FIG. 14 the coil spring is stretched. The energized coil spring contracts urging the needle guard distally toward the tip of the needle cannula substantially as explained in the preceding embodiment of FIGS. 1-7 .
  • the spring element of the present invention can comprise a variety of materials and configurations of energy storing and releasing elements.
  • the spring element material may include elastomeric materials, thermoplastic materials and/or metal and the like.
  • Spring element configurations may vary widely from straight elastomeric elements to specifically shaped coil springs, cantilever springs, and combinations thereof formed for the specific application. All of these spring elements are within the purview of the present invention with the spring element of FIGS. 1-7 and the spring element of FIG. 14 being merely representative of these many possibilities.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US11/263,025 2005-10-31 2005-10-31 Single-handedly actuatable shield for needles Abandoned US20070100296A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US11/263,025 US20070100296A1 (en) 2005-10-31 2005-10-31 Single-handedly actuatable shield for needles
AU2006309137A AU2006309137B2 (en) 2005-10-31 2006-10-19 Single-handedly actuatable shield for needles
EP06826219.5A EP1951342B1 (de) 2005-10-31 2006-10-19 Mit einer hand aktivierbares nadelschild
ES16163983T ES2813384T3 (es) 2005-10-31 2006-10-19 Protección para agujas accionable con una sola mano
CA2627467A CA2627467C (en) 2005-10-31 2006-10-19 Single-handedly actuatable shield for needles
SG201008020-8A SG166807A1 (en) 2005-10-31 2006-10-19 Single-handedly actuatable shield for needles
BRPI0618093A BRPI0618093B8 (pt) 2005-10-31 2006-10-19 conjunto de agulha com mecanismo protetor atuável com uma única mão
JP2008538907A JP4990905B2 (ja) 2005-10-31 2006-10-19 片手操作可能な注射針シールド
ES06826219.5T ES2593414T3 (es) 2005-10-31 2006-10-19 Protección para agujas accionable con una sola mano
PCT/US2006/040779 WO2007053309A1 (en) 2005-10-31 2006-10-19 Single-handedly actuatable shield for needles
EP16163983.6A EP3067084B1 (de) 2005-10-31 2006-10-19 Einhändig betätigbare schutzvorrichtung für nadeln
US12/249,259 US8066679B2 (en) 2005-10-31 2008-10-10 Single-handedly actuatable shield

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/263,025 US20070100296A1 (en) 2005-10-31 2005-10-31 Single-handedly actuatable shield for needles

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/249,259 Continuation US8066679B2 (en) 2005-10-31 2008-10-10 Single-handedly actuatable shield

Publications (1)

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US20070100296A1 true US20070100296A1 (en) 2007-05-03

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US11/263,025 Abandoned US20070100296A1 (en) 2005-10-31 2005-10-31 Single-handedly actuatable shield for needles
US12/249,259 Active 2026-10-27 US8066679B2 (en) 2005-10-31 2008-10-10 Single-handedly actuatable shield

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US12/249,259 Active 2026-10-27 US8066679B2 (en) 2005-10-31 2008-10-10 Single-handedly actuatable shield

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US (2) US20070100296A1 (de)
EP (2) EP3067084B1 (de)
JP (1) JP4990905B2 (de)
AU (1) AU2006309137B2 (de)
BR (1) BRPI0618093B8 (de)
CA (1) CA2627467C (de)
ES (2) ES2813384T3 (de)
SG (1) SG166807A1 (de)
WO (1) WO2007053309A1 (de)

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US20040167477A1 (en) * 2002-12-19 2004-08-26 Becton, Dickinson And Company Forward blunting wingset with leaf spring driven shield
US8939938B2 (en) 2006-10-12 2015-01-27 Covidien Lp Needle tip protector
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US8043268B1 (en) 2008-07-22 2011-10-25 Marks Lloyd A Safety needle and method of using same
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US9642989B2 (en) 2009-08-13 2017-05-09 Vigmed Ab Catheter needle tip shielding device
US8747366B2 (en) 2009-12-18 2014-06-10 Unisis Corporation Medical needle
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JP2013545548A (ja) * 2010-11-22 2013-12-26 ベー・ブラウン・メルズンゲン・アクチエンゲゼルシャフト ヒンジ式シールドアセンブリ及び関連する方法
US8926563B2 (en) 2011-04-27 2015-01-06 Covidien Lp Safety IV catheter assemblies
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US11596777B2 (en) 2016-02-08 2023-03-07 EM Device Lab, Inc. Catheter device including a connector
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CN115175718A (zh) * 2019-10-28 2022-10-11 Fgc控股有限公司 一次性安全针防护件
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CN112472924A (zh) * 2020-12-17 2021-03-12 徐晓峰 注射针防护装置

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BRPI0618093B1 (pt) 2018-04-10
BRPI0618093A2 (pt) 2011-08-16
SG166807A1 (en) 2010-12-29
AU2006309137B2 (en) 2012-02-02
JP2009513301A (ja) 2009-04-02
US20090093771A1 (en) 2009-04-09
US8066679B2 (en) 2011-11-29
BRPI0618093B8 (pt) 2021-06-22
EP3067084A1 (de) 2016-09-14
CA2627467A1 (en) 2007-05-10
EP1951342A1 (de) 2008-08-06
JP4990905B2 (ja) 2012-08-01
CA2627467C (en) 2014-12-16
AU2006309137A1 (en) 2007-05-10
WO2007053309A1 (en) 2007-05-10
ES2813384T3 (es) 2021-03-23
EP3067084B1 (de) 2020-06-17
EP1951342B1 (de) 2016-06-29
ES2593414T3 (es) 2016-12-09

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