CA1325566C - Protector shield for needles - Google Patents
Protector shield for needlesInfo
- Publication number
- CA1325566C CA1325566C CA000599395A CA599395A CA1325566C CA 1325566 C CA1325566 C CA 1325566C CA 000599395 A CA000599395 A CA 000599395A CA 599395 A CA599395 A CA 599395A CA 1325566 C CA1325566 C CA 1325566C
- Authority
- CA
- Canada
- Prior art keywords
- needle
- protector shield
- arcuate wall
- arcuate
- arm
- 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.)
- Expired - Lifetime
Links
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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/1011—Locking means for securing connection; Additional tamper safeties
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1066—Tube connectors; Tube couplings having protection means, e.g. sliding sleeve to protect connector itself, shrouds to protect a needle present in the connector, protective housing, isolating sheath
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S604/00—Surgery
- Y10S604/905—Aseptic connectors or couplings, e.g. frangible, piercable
Abstract
ABSTRACT OF THE DISCLOSURE
A protector shield (28) is provided for a needle (26) to protect from injury to the hand and touch contamination of the needle. The protector shield (28) comprises an arcuate wall (36), longitudinally positionable about the pointed end of a tubular needle (26) in spaced relation to it. The arcuate wall (36) defines an open side (38), and an arcuate arm (42) extends from the arcuate wall (36) across a portion of the open side (38). The arm (42) extends generally circumferentially about the needle (26) so that the protector shield (28) may be used to lock the needle (26) into engagement with a Y-type injection site.
A protector shield (28) is provided for a needle (26) to protect from injury to the hand and touch contamination of the needle. The protector shield (28) comprises an arcuate wall (36), longitudinally positionable about the pointed end of a tubular needle (26) in spaced relation to it. The arcuate wall (36) defines an open side (38), and an arcuate arm (42) extends from the arcuate wall (36) across a portion of the open side (38). The arm (42) extends generally circumferentially about the needle (26) so that the protector shield (28) may be used to lock the needle (26) into engagement with a Y-type injection site.
Description
32~66 PROTECTOR SE~IELD FOR NEEDLES
TECHNI CAL FIELD
Tubular protectors for medical needles are well known in the prior art. For example, in Barnwall et al. U.5. Patent No. 3,64B,684, a shielded needle is shown in penetrating relation with the rubber septum of a container mouth. In Larrabee U.S. Patent No. 3,993,063, a more complex protective shie1ding assembly is disclosed. Tnanawalla U.S Patent No.
~ 4,161,949 discloses an aseptic system having a plurality I of tubular shields, while Nitshke U.S. Patent No.
1 4,232,669 discloses a protecti~e sheath for a syringe 1 15 needle, The above cited references are only a few of the designs of protective needle sheaths that are available to the prior art, being set forth for illustrative purposes.
It is of course desirable to provide a sheath needle for a blood set, or an enteral or parental ~ solution set in which the needle is protected from ! touch, both to prevent needle sticks to the hand, ~ and also to prevent touch contamination of the needle.
j 25 At the same time, it is necessary for the needle to be able to make desired penetrations of access sites so that aseptic connections may be made for the administration of ~upplementary drugs, blood components or, the like, or for the taking of desired . 30 8amples. Also, it would be desirable for the needle to be secured into locked relationship with the :
.' 132~566 appropriate connection site, in those circumstances where a connection of substantial duration is desired, as in the instance where supplemental medication i5 to be added to a Y site in a conventional parenteral solution set. If the needle could be easily locked into its connected relation with an injection site, the chances of accidental dislodgement of the needle connection would of cour5e be significantly reduced.
By the invention of this application a protector shield for a needle is provided in which the chances of touch contamination of the needle or injury from the needle may be substantially eliminated, but the needle is still capable of making connections with appropriate needle access sites in a medical solution delivery set or the like for blood or other medical solutions. Additionally, the protector shield of this invention is capable of locking into connected relation with certain needle access sites, for example a Y-type needle access site of a type typically positioned in a parenteral solution set between the ends thereof, for not only protecting against touching of the needle with the fingers or the hands, but also to provide the desired locking action which can prevent accidental separation of the needle from its access site until that action is desired.
PESCRIPTION OF THE INVENTION
Various aspects of the invention are as follows:
A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation thereto, said arcuate wall defining an open side, and an arcuate arm extending from said arcuate wall across a portion of said open side, said arm extending generally circumferentially about said needle, whereby said protector shield lockingly engages and dlsengages with a Y-type injection site having 1 35 a side arm and septum, by rotating said arcuate arm under ¦ ~aid side arm after insertion of said needle into said ~ septum.
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A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation and positioned in generally axial relation thereto, said pointed end of the needle being in recessed relation with the forward end of said arcuate wall, said arcuate wall defining an open side, and an arcuate arm extending from said arcuate wall across a portion of said open side, said arm being positioned forward of said needle end, and extending generally circumferentially about said needle, whereby said protector shield lockingly engages and disengages with a Y-type injection site having a side arm and a septum, by rotating said arcuate arm under said side arm after insertion of said needle into said septum.
A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation thereto, said pointed needle end being in recessed relation with the forward end of said arcuate wall, said needle being positioned in generally axial relation with said arcuate wall, the arcuate wall defining an open side, and an ~ arcuate arm, positioned forward of the needle end, j extending from said arcuate wall across a portion of said ~ open side, said arm extending generally circumferentially i about said needle, said arcuate wall defining a rearward ' 30 end, said wall being attached at ~aid rearward end to a forward end of a tubular member, the diameter of said -~ arcuate wall being greater than the diameter of said tubular member, said arcuate wall defining an arc about said needle of essentially 150 to 240 degrees.
.~ 35 By way of added explanation, an aspect of this l invention pertains to a protector shield for a needle which ¦ comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced . relation thereto. Typically, the needle is in substantially coaxial relation with the axis of the arcuate wall, which is in circumferential, essentially surrounding g relation with the longitudinally extending t.~
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needle.
The arcuate wall defines an open side, with an arcuate arm extending from the arcuate wall across a portion of the open side, leaving a circumferential space across the open side which the arm does not traverse. The arm extends generally circumferentially about the needle. The protector shield may be used to lock the needle into engagement with a Y-type injection site or other appropriately designed site by means of the circumferentially extending arm rotating underneath the projecting Y arm of the injection ~-site, or any other appropriate projection of any injection site.
Hence, one may connect a needle, protected by the protector shield of this invention, by pressing it through an injection site. One then rotates the protector shield to cause the arm to rotate into engagement with a side projection of the injection site for locking the two parts into connected relation, until it is desired to separate them.
The protector shield of this invention may be a separate part, attachable to a needle in a conventional manner. However, in the specific embodiments of J this invention, the needle and protector ~hield are -~
25 manufactured as a single, connected piece. The protector ¦ shield may be insert molded about the needle, with the point of the needle being spaced therefrom.
j Preferably, the pointed needle end is in recessed relation with the forward end of the arcuate wall.
30 Also, the arcuate arm which is used to lock the shield in position on a Y-type injection site or the like is preferably positioned forward of the needle end.
The arcuate wall of the protector shield of ,~
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this invention preferably defines an arc about the needle of essentially 150 to 240 degrees. Accordingly, although the shielding is not perfect, it is very difficult to bring one's finger into contact with a properly designed protector shield in accordance with this invention, particularly in view of the fact that the arcuate arm provides additional protection of the needle, despite the side aperture.
The arcuate wall preferably defines a rearward end, and the wall is attached at its rearward end to a forward end of a tubular member which may be used as a base or housing to hold the needle. ~he tubular member may also carry a connector member for connection of the protector shield with tubing of a set, a hypodermic needle syringe, or the like.
Thus, various medical apparatus such as adminstration - sets or syringes may be equipped with needles protected with the shield of this invention, for protection against injury and touch contamination, and also for a locking of the needle in place on appropriate injection sites.
. - . .
~ DESCRIPTION OF THE DRAWINGS
'.~
In the drawings, Fig. 1 is a plan view of a 1 conventional parenteral solution administration set, ¦ 25 having an intermediate Y-type injection site into which an injection needle from another set penetrates, 3 being locked in position by the protector shield of this invention;
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Fig. 2 is a fragmentary perspective view of a portion of Fig. 1, showing part of the protector shield of this invention and its locking relationship;
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Fig. 3 is an enlarged elevatio~al ~iew of the protector shield of Figs. 1 and 2;
Fig. 4 is a view of the locking shield of Fig.
- 3 taken along line 4-4 thereof;
Fig. 5 is a view of the protector shield of Fig. 3 taken along line 5-S thereof;
Fig. 6 is a longitudinal sectional view of the protector shield of Fig. 3; and -~
~'.
- Fig. 7 is a longitudinal sectional view of an alternate embodiment of the protector shield of this invention, shown in locked relation with a Y
site on a set and connected to a syringe for adminstration .
of supplemental medication.
¦ DESCRIPTION OF SPECIFIC EMBODIMENTS
Referring to Fig. 1, a conventional parenteral solution administration set 10 is shown, being connected . to a flexible container 12 of parenteral solution at one en~, and carrying at its other end a shielded :~
intravenous needle 14, for connection with the venous system of a patient to deliver the parenteral solution of container 12 to the patient. As i8 conventional, a drip chamber 16, a hydrophobic vent 18, a flow control clamp 20, and a Y-type injection site 22 are provided to set 10.
The forward end of a conventional supplemental ~:
medication set 24 is shown to be ln connection with Y-type injection site 22 of set 10, typically for the purpose of providing supplemental medications such as antibiotics and the like to the patient without .~ :
132~5~
the need of making another intravenous connection.
Referring also to Figs. 2 through 6, set 24 carries about its connection needle 26 a protector shield 28 of this invention. Protector shield 28 comprises a tubular portion 30 which carries at its rear end a tubular extension 32, which may fit in sealing, connected relation into the bore of the tubing of set 24. Needle 26, as shown in Fig. 6, may be permanently carried in molded, inner tubular member 34 as the result of an insert molding process, or by any other desired manu~acturing technique.
Tubular portion 30 of protector shield 28 carries a$ its forward end an arcuate wall 36, which defines an open side 38. Arcuate wall extends in a generally circumferential relation about needle 26, with the needle 26 being on the axis of arcuate wall 36 and thus spaced within the wall. From one side edge 40 of arcuate wall 36, an arcuate arm 42 extends across a portion of open side 38 as shown, but spaced ~ 20 from the other side 44 of arcuate wall 36, so that 3 a gap 46 is provided to permit the entry of side arm 48 of Y-type injection site through gap 46 as needle 26 is advanced into the rubber septum of the injection site. Arcuate wall 36 defines an arc about needle 26 of approximately 180-200, from side 40 to side 44, to provide substantial shielding to needle ? 26, the outer end of which is in generally recessed relation to wall 36, as shown particularly in Fig.
, 6.
A~ 30 Accordingly, as one connects needle 26 to the , Y-type injection site 22, arm 48 of the injection ql site can slide through space 46. The alignment of ;,Jj the rubber septum which is conventionally on top of injection site 22 may be controlled by the presence of longitudinal internal ribs 49, which can serve as guides to assure that needle 26 provides proper, . ", ~ .
,.
.,.
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central penetration of the conventional top ~eptum of the Y-type injection site.
After side arm 48 has pas~ed through ~pace 46, as 6hown in Fig. 2, one may rotate protector ~hield 28 to bring anm 42 under side arm 48 to prevent the accidental withdrawal o needle 26 from the ~njoction 5ite. E~larged end S0 of arm 42 reduees the chance that the syEtem may accidentally rotate into unlocked relationship again, until it i~ deliberately de6ired to unlock the system and ~eparate Y site 22 from needle 26.
Thus, the protector ~hield ~f this invention provides good protection aga~ nEt touching of or in jury ' by needle 26, while at the ~ame time it provides '. 15 the means where needle 26 may be lccked into engaged relation with an injection ~ite such as Y site 22.
It will be noted that arcuate w~ll 36 defines the oection of a cylinder having a diameter which i8 larger than that of tubular portion 30. The use J 20 of this ~ort of a double-diameter configuration facilitates the manufacturing of the specific embodiment ~hown ln that one can u~e ~traight-draw molaing without ~ide action for it~ manufacture due to the differinq 3 di~metors of the two ~ection~ 30 ~nd 36.
3~ 25 ~urning now to Fig. 7, a secon~ ~mbo~iment ¦ of the protoctor ~hiold of this lnvention ~ d~sclo~ed, $ the ~tru~turo and function thereof boing ident~cal I to that of the 1r~t embodiment except as otherwise j d~cribed herein.
: 30 AB before, protector shiold 60 defines a tubular portion 30a which carries noedle 26a havlng a ~paced, . downwardly projecting free end. Tubular portion . 30~ al~o carries arcuate wall 36a, of ~imilar design to arcuate wall 36. AB beforo, arcuate wall 36a . ' .
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carries arcuate arm 42a for purposes of grasping ~ide arm 4~ o~ a Y-type injection site 22.
Prote~tor shield 60 may, in fact, be of identical design to protector ~hield 28, with the exception that rear fitting 32a i~ in the form of a tapered luer connector, to permit connection with a conventional ~yringe 52. Thus, ~yringe 52 may be ~iled with the : desired drug or other material for injeGtion into Y-site ~2. It is connected to the protectos hield 6Q of this ~nven ion. The ~hield i~ ~pplied to Y-site 22, with needle 26a penetrating rubber septum 54 on top of Y-~ite 22, to permit expulu~ion o~ the oontents of syringe 52 into Y-~ite 22 and thu~ ~own the set to ~hich it is ~ttached, to the patient or other de~tlnation.
The above has been offered for illustrative purposes only, and i5 not intended to limit the Bcope of the invention of this applicat~on, which i~ defined in the claims below.
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TECHNI CAL FIELD
Tubular protectors for medical needles are well known in the prior art. For example, in Barnwall et al. U.5. Patent No. 3,64B,684, a shielded needle is shown in penetrating relation with the rubber septum of a container mouth. In Larrabee U.S. Patent No. 3,993,063, a more complex protective shie1ding assembly is disclosed. Tnanawalla U.S Patent No.
~ 4,161,949 discloses an aseptic system having a plurality I of tubular shields, while Nitshke U.S. Patent No.
1 4,232,669 discloses a protecti~e sheath for a syringe 1 15 needle, The above cited references are only a few of the designs of protective needle sheaths that are available to the prior art, being set forth for illustrative purposes.
It is of course desirable to provide a sheath needle for a blood set, or an enteral or parental ~ solution set in which the needle is protected from ! touch, both to prevent needle sticks to the hand, ~ and also to prevent touch contamination of the needle.
j 25 At the same time, it is necessary for the needle to be able to make desired penetrations of access sites so that aseptic connections may be made for the administration of ~upplementary drugs, blood components or, the like, or for the taking of desired . 30 8amples. Also, it would be desirable for the needle to be secured into locked relationship with the :
.' 132~566 appropriate connection site, in those circumstances where a connection of substantial duration is desired, as in the instance where supplemental medication i5 to be added to a Y site in a conventional parenteral solution set. If the needle could be easily locked into its connected relation with an injection site, the chances of accidental dislodgement of the needle connection would of cour5e be significantly reduced.
By the invention of this application a protector shield for a needle is provided in which the chances of touch contamination of the needle or injury from the needle may be substantially eliminated, but the needle is still capable of making connections with appropriate needle access sites in a medical solution delivery set or the like for blood or other medical solutions. Additionally, the protector shield of this invention is capable of locking into connected relation with certain needle access sites, for example a Y-type needle access site of a type typically positioned in a parenteral solution set between the ends thereof, for not only protecting against touching of the needle with the fingers or the hands, but also to provide the desired locking action which can prevent accidental separation of the needle from its access site until that action is desired.
PESCRIPTION OF THE INVENTION
Various aspects of the invention are as follows:
A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation thereto, said arcuate wall defining an open side, and an arcuate arm extending from said arcuate wall across a portion of said open side, said arm extending generally circumferentially about said needle, whereby said protector shield lockingly engages and dlsengages with a Y-type injection site having 1 35 a side arm and septum, by rotating said arcuate arm under ¦ ~aid side arm after insertion of said needle into said ~ septum.
. ~ ' .
.-.1' 'B ' -.~ .
~S~` ' . . . ! :, , ,; ", ,, ' . ~ ' i ' ` ' 2a 1325~;6~
A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation and positioned in generally axial relation thereto, said pointed end of the needle being in recessed relation with the forward end of said arcuate wall, said arcuate wall defining an open side, and an arcuate arm extending from said arcuate wall across a portion of said open side, said arm being positioned forward of said needle end, and extending generally circumferentially about said needle, whereby said protector shield lockingly engages and disengages with a Y-type injection site having a side arm and a septum, by rotating said arcuate arm under said side arm after insertion of said needle into said septum.
A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation thereto, said pointed needle end being in recessed relation with the forward end of said arcuate wall, said needle being positioned in generally axial relation with said arcuate wall, the arcuate wall defining an open side, and an ~ arcuate arm, positioned forward of the needle end, j extending from said arcuate wall across a portion of said ~ open side, said arm extending generally circumferentially i about said needle, said arcuate wall defining a rearward ' 30 end, said wall being attached at ~aid rearward end to a forward end of a tubular member, the diameter of said -~ arcuate wall being greater than the diameter of said tubular member, said arcuate wall defining an arc about said needle of essentially 150 to 240 degrees.
.~ 35 By way of added explanation, an aspect of this l invention pertains to a protector shield for a needle which ¦ comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced . relation thereto. Typically, the needle is in substantially coaxial relation with the axis of the arcuate wall, which is in circumferential, essentially surrounding g relation with the longitudinally extending t.~
'i ~3~ 132~6~
needle.
The arcuate wall defines an open side, with an arcuate arm extending from the arcuate wall across a portion of the open side, leaving a circumferential space across the open side which the arm does not traverse. The arm extends generally circumferentially about the needle. The protector shield may be used to lock the needle into engagement with a Y-type injection site or other appropriately designed site by means of the circumferentially extending arm rotating underneath the projecting Y arm of the injection ~-site, or any other appropriate projection of any injection site.
Hence, one may connect a needle, protected by the protector shield of this invention, by pressing it through an injection site. One then rotates the protector shield to cause the arm to rotate into engagement with a side projection of the injection site for locking the two parts into connected relation, until it is desired to separate them.
The protector shield of this invention may be a separate part, attachable to a needle in a conventional manner. However, in the specific embodiments of J this invention, the needle and protector ~hield are -~
25 manufactured as a single, connected piece. The protector ¦ shield may be insert molded about the needle, with the point of the needle being spaced therefrom.
j Preferably, the pointed needle end is in recessed relation with the forward end of the arcuate wall.
30 Also, the arcuate arm which is used to lock the shield in position on a Y-type injection site or the like is preferably positioned forward of the needle end.
The arcuate wall of the protector shield of ,~
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this invention preferably defines an arc about the needle of essentially 150 to 240 degrees. Accordingly, although the shielding is not perfect, it is very difficult to bring one's finger into contact with a properly designed protector shield in accordance with this invention, particularly in view of the fact that the arcuate arm provides additional protection of the needle, despite the side aperture.
The arcuate wall preferably defines a rearward end, and the wall is attached at its rearward end to a forward end of a tubular member which may be used as a base or housing to hold the needle. ~he tubular member may also carry a connector member for connection of the protector shield with tubing of a set, a hypodermic needle syringe, or the like.
Thus, various medical apparatus such as adminstration - sets or syringes may be equipped with needles protected with the shield of this invention, for protection against injury and touch contamination, and also for a locking of the needle in place on appropriate injection sites.
. - . .
~ DESCRIPTION OF THE DRAWINGS
'.~
In the drawings, Fig. 1 is a plan view of a 1 conventional parenteral solution administration set, ¦ 25 having an intermediate Y-type injection site into which an injection needle from another set penetrates, 3 being locked in position by the protector shield of this invention;
.~
Fig. 2 is a fragmentary perspective view of a portion of Fig. 1, showing part of the protector shield of this invention and its locking relationship;
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Fig. 3 is an enlarged elevatio~al ~iew of the protector shield of Figs. 1 and 2;
Fig. 4 is a view of the locking shield of Fig.
- 3 taken along line 4-4 thereof;
Fig. 5 is a view of the protector shield of Fig. 3 taken along line 5-S thereof;
Fig. 6 is a longitudinal sectional view of the protector shield of Fig. 3; and -~
~'.
- Fig. 7 is a longitudinal sectional view of an alternate embodiment of the protector shield of this invention, shown in locked relation with a Y
site on a set and connected to a syringe for adminstration .
of supplemental medication.
¦ DESCRIPTION OF SPECIFIC EMBODIMENTS
Referring to Fig. 1, a conventional parenteral solution administration set 10 is shown, being connected . to a flexible container 12 of parenteral solution at one en~, and carrying at its other end a shielded :~
intravenous needle 14, for connection with the venous system of a patient to deliver the parenteral solution of container 12 to the patient. As i8 conventional, a drip chamber 16, a hydrophobic vent 18, a flow control clamp 20, and a Y-type injection site 22 are provided to set 10.
The forward end of a conventional supplemental ~:
medication set 24 is shown to be ln connection with Y-type injection site 22 of set 10, typically for the purpose of providing supplemental medications such as antibiotics and the like to the patient without .~ :
132~5~
the need of making another intravenous connection.
Referring also to Figs. 2 through 6, set 24 carries about its connection needle 26 a protector shield 28 of this invention. Protector shield 28 comprises a tubular portion 30 which carries at its rear end a tubular extension 32, which may fit in sealing, connected relation into the bore of the tubing of set 24. Needle 26, as shown in Fig. 6, may be permanently carried in molded, inner tubular member 34 as the result of an insert molding process, or by any other desired manu~acturing technique.
Tubular portion 30 of protector shield 28 carries a$ its forward end an arcuate wall 36, which defines an open side 38. Arcuate wall extends in a generally circumferential relation about needle 26, with the needle 26 being on the axis of arcuate wall 36 and thus spaced within the wall. From one side edge 40 of arcuate wall 36, an arcuate arm 42 extends across a portion of open side 38 as shown, but spaced ~ 20 from the other side 44 of arcuate wall 36, so that 3 a gap 46 is provided to permit the entry of side arm 48 of Y-type injection site through gap 46 as needle 26 is advanced into the rubber septum of the injection site. Arcuate wall 36 defines an arc about needle 26 of approximately 180-200, from side 40 to side 44, to provide substantial shielding to needle ? 26, the outer end of which is in generally recessed relation to wall 36, as shown particularly in Fig.
, 6.
A~ 30 Accordingly, as one connects needle 26 to the , Y-type injection site 22, arm 48 of the injection ql site can slide through space 46. The alignment of ;,Jj the rubber septum which is conventionally on top of injection site 22 may be controlled by the presence of longitudinal internal ribs 49, which can serve as guides to assure that needle 26 provides proper, . ", ~ .
,.
.,.
-7_ 1325~6~
central penetration of the conventional top ~eptum of the Y-type injection site.
After side arm 48 has pas~ed through ~pace 46, as 6hown in Fig. 2, one may rotate protector ~hield 28 to bring anm 42 under side arm 48 to prevent the accidental withdrawal o needle 26 from the ~njoction 5ite. E~larged end S0 of arm 42 reduees the chance that the syEtem may accidentally rotate into unlocked relationship again, until it i~ deliberately de6ired to unlock the system and ~eparate Y site 22 from needle 26.
Thus, the protector ~hield ~f this invention provides good protection aga~ nEt touching of or in jury ' by needle 26, while at the ~ame time it provides '. 15 the means where needle 26 may be lccked into engaged relation with an injection ~ite such as Y site 22.
It will be noted that arcuate w~ll 36 defines the oection of a cylinder having a diameter which i8 larger than that of tubular portion 30. The use J 20 of this ~ort of a double-diameter configuration facilitates the manufacturing of the specific embodiment ~hown ln that one can u~e ~traight-draw molaing without ~ide action for it~ manufacture due to the differinq 3 di~metors of the two ~ection~ 30 ~nd 36.
3~ 25 ~urning now to Fig. 7, a secon~ ~mbo~iment ¦ of the protoctor ~hiold of this lnvention ~ d~sclo~ed, $ the ~tru~turo and function thereof boing ident~cal I to that of the 1r~t embodiment except as otherwise j d~cribed herein.
: 30 AB before, protector shiold 60 defines a tubular portion 30a which carries noedle 26a havlng a ~paced, . downwardly projecting free end. Tubular portion . 30~ al~o carries arcuate wall 36a, of ~imilar design to arcuate wall 36. AB beforo, arcuate wall 36a . ' .
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-8- 132~
carries arcuate arm 42a for purposes of grasping ~ide arm 4~ o~ a Y-type injection site 22.
Prote~tor shield 60 may, in fact, be of identical design to protector ~hield 28, with the exception that rear fitting 32a i~ in the form of a tapered luer connector, to permit connection with a conventional ~yringe 52. Thus, ~yringe 52 may be ~iled with the : desired drug or other material for injeGtion into Y-site ~2. It is connected to the protectos hield 6Q of this ~nven ion. The ~hield i~ ~pplied to Y-site 22, with needle 26a penetrating rubber septum 54 on top of Y-~ite 22, to permit expulu~ion o~ the oontents of syringe 52 into Y-~ite 22 and thu~ ~own the set to ~hich it is ~ttached, to the patient or other de~tlnation.
The above has been offered for illustrative purposes only, and i5 not intended to limit the Bcope of the invention of this applicat~on, which i~ defined in the claims below.
,. . .
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Claims (11)
1. A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation thereto, said arcuate wall defining an open side, and an arcuate arm extending from said arcuate wall across a portion of said open side, said arm extending generally circumferentially about said needle, whereby said protector shield lockingly engages and disengages with a Y-type injection site having a side arm and septum, by rotating said arcuate arm under said side arm after insertion of said needle into said septum.
2. The protector shield of Claim 1 which carries a needle in generally axial relation therewith.
3. The protector shield of Claim 2 in which said pointed needle end is in recessed relation with the forward end of said arcuate wall.
4. The protector shield of Claim 2 in which said arcuate arm is positioned forward of said needle end.
5. The protector shield of Claim 2 in which said arcuate wall defines an arc about said needle of essentially 150 to 240 degrees.
6. The protector shield of Claim 2 in which said arcuate wall defines a rearward end, said wall being attached at said rearward end to a forward end of a tubular member.
7. The protector shield of Claim 6 in which the diameter of said arcuate wall is greater than the diameter of said tubular member, to facilitate molding thereof.
8. The protector shield of Claim 2 in which said arcuate wall carries a plurality of inwardly projecting, longitudinally extending guide ribs.
9. The protector shield of Claim 2 which defines a rearward luer fitting which communicates with said tubular needle, for connection with an injection syringe or the like.
10. The protector shield of Claim 2 which defines a rearward fitting which communicates with said tubular needle, for connection with flexible tubing of a medical administration set.
11. A protector shield for a needle, which comprises an arcuate wall, longitudinally positionable about the pointed end of a tubular needle in spaced relation and positioned in generally axial relation thereto, said pointed end of the needle being in recessed relation with the forward end of said arcuate wall, said arcuate wall defining an open side, and an[d] arcuate arm extending from said arcuate wall across a portion of said open side, said arm being positioned forward of said needle end, and extending generally circumferentially about said needle, whereby said protector shield lockingly engages and disengages with a Y-type injection site having a side arm and a septum, by rotating said arcuate arm under said side arm after insertion of said needle into said septum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/193,457 US5195992A (en) | 1988-05-13 | 1988-05-13 | Protector shield for needles |
| US193,457 | 1988-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1325566C true CA1325566C (en) | 1993-12-28 |
Family
ID=22713723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000599395A Expired - Lifetime CA1325566C (en) | 1988-05-13 | 1989-05-11 | Protector shield for needles |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5195992A (en) |
| EP (1) | EP0379531B1 (en) |
| AU (1) | AU621369B2 (en) |
| CA (1) | CA1325566C (en) |
| DE (1) | DE68912924T2 (en) |
| DK (1) | DK171700B1 (en) |
| WO (1) | WO1989010770A1 (en) |
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| US5603706A (en) * | 1992-09-29 | 1997-02-18 | Wyatt; Philip | Infusion apparatus |
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| US5338311A (en) | 1993-08-23 | 1994-08-16 | Mahurkar Sakharam D | Hypodermic needle assembly |
| US6280401B1 (en) | 1993-08-23 | 2001-08-28 | Sakharam D. Mahurkar | Hypodermic needle assembly |
| US5536262A (en) * | 1994-09-07 | 1996-07-16 | Cedars-Sinai Medical Center | Medical coupling device |
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| EP2319556B1 (en) | 1996-02-27 | 2013-04-24 | B. Braun Melsungen AG | Needle tip guard for hypodermic needles |
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| US6629959B2 (en) * | 1996-02-27 | 2003-10-07 | Injectimed, Inc. | Needle tip guard for percutaneous entry needles |
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-
1988
- 1988-05-13 US US07/193,457 patent/US5195992A/en not_active Expired - Lifetime
-
1989
- 1989-05-08 WO PCT/US1989/001964 patent/WO1989010770A1/en active IP Right Grant
- 1989-05-08 AU AU35734/89A patent/AU621369B2/en not_active Expired
- 1989-05-08 DE DE68912924T patent/DE68912924T2/en not_active Expired - Lifetime
- 1989-05-08 EP EP89905875A patent/EP0379531B1/en not_active Expired - Lifetime
- 1989-05-11 CA CA000599395A patent/CA1325566C/en not_active Expired - Lifetime
-
1990
- 1990-01-09 DK DK005090A patent/DK171700B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1989010770A1 (en) | 1989-11-16 |
| EP0379531B1 (en) | 1994-02-02 |
| DE68912924D1 (en) | 1994-03-17 |
| US5195992A (en) | 1993-03-23 |
| DK171700B1 (en) | 1997-04-01 |
| DE68912924T2 (en) | 1994-09-15 |
| AU621369B2 (en) | 1992-03-12 |
| DK5090D0 (en) | 1990-01-09 |
| EP0379531A1 (en) | 1990-08-01 |
| DK5090A (en) | 1990-01-09 |
| AU3573489A (en) | 1989-11-29 |
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Legal Events
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| MKEX | Expiry |