US20080098564A1 - Locking Hinges for Syringe Handles, Syringes Including Locking Hinges, and Associated Methods - Google Patents
Locking Hinges for Syringe Handles, Syringes Including Locking Hinges, and Associated Methods Download PDFInfo
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- US20080098564A1 US20080098564A1 US11/923,514 US92351407A US2008098564A1 US 20080098564 A1 US20080098564 A1 US 20080098564A1 US 92351407 A US92351407 A US 92351407A US 2008098564 A1 US2008098564 A1 US 2008098564A1
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- United States
- Prior art keywords
- hinge
- locking
- handle
- syringe
- elongate
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Classifications
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- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/3129—Syringe barrels
- A61M5/3137—Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31525—Dosing
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/3159—Dose expelling manners
- A61M5/31591—Single dose, i.e. individually set dose administered only once from the same medicament reservoir, e.g. including single stroke limiting means
Definitions
- the present invention relates generally to locking hinges for syringe handles configured to provide a user with a mechanical advantage while requiring the use of only one hand, even when a large amount of force is required to move a plunger through the barrel of a syringe. More specifically, the present invention relates to looking hinges that maintain relative positions of two members of syringe handles, as well as a position of a plunger within a barrel.
- FIG. 1 is a perspective view of an embodiment of a power syringe handle that includes members that are pivotally connected by an embodiment of locking hinge that incorporates teachings of the present invention
- FIG. 2 is an assembly view of the handle shown in FIG. 1 , illustrating an embodiment of locking hinge according to teachings of the present invention
- FIGS. 3 and 4 illustrate, in perspective, other embodiments of locking hinges
- FIG. 5 is a plan view of an interior of a first piece of a first member of the embodiment of handle shown in FIGS. 1 and 2 ;
- FIG. 6 shows the embodiment of hinge shown in FIG. 2 slid into an unlocked position relative to the members of the handle shown in FIGS. 1 and 2 ;
- FIG. 7 shows the embodiment of hinge shown in FIG. 2 slid into a locked position relative to the members of the handle
- FIG. 8 depicts another example of the manner in which a hinge that incorporates teachings of the present invention may be locked in place
- FIG. 9 is a plan view of an interior of a second piece of the first member of the embodiment of handle shown in FIGS. 1 and 2 , which is configured for assembly with the first piece depicted in FIG. 5 ;
- FIG. 10 is a plan view of an outer surface of a first piece of a second member of the embodiment of handle shown in FIGS. 1 and 2 ;
- FIG. 11 is a plan view of an outer surface of a second piece of the second member of the embodiment of handle shown in FIGS. 1 and 2 , which is configured for assembly with the first piece illustrated in FIG. 10 ;
- FIG. 12 is a schematic representation of an embodiment of power syringe and its handle, which includes members that are pivotally connected to one another by a locking hinge according to embodiments of the present invention.
- FIG. 13 schematically represents another embodiment of power syringe and its handle, which includes members that are pivotally connected by a locking hinge that incorporates teachings of the present invention.
- Handle 20 includes a first member 50 that is configured for association with a first element (e.g. barrel or plunger) of a syringe (not shown) and a second member 100 that is configured for association with a second element (e.g., plunger or barrel) of the syringe.
- handle 20 includes a hinge 40 that pivotally connects first member 50 and second member 100 to each other.
- Hinge 40 is also configured to enable first member 50 and second member 100 to be locked into a plurality of different orientations—between an open orientation, in which members 50 and 100 are spaced as ar as possible apart from one another, and a closed orientation, in which members 50 and 100 are positioned as close as possible to one another—relative to each other. By locking the relative positions of members 50 and 100 , hinge 40 may prevent or limit further movement of members 50 and 100 .
- FIG. 2 illustrates, among other things, an embodiment of hinge 40 .
- Hinge 40 includes an elongate hinge element 41 with a central axis 42 , or axis of rotation about which hinge 40 is intended to rotate, and two ends 43 and 44 . At least one end 43 , 44 of elongate hinge element 41 is configured to engage a complementary portion of member 50 , 100 of handle 20 ( FIG. 1 ).
- elongate hinge element 41 includes two sections 41 a and 41 b that are configured for assembly with one another, although single piece hinges are also within the scope of the present invention.
- hinge 40 includes a locking element 45 .
- locking element 45 may comprise a gear (e.g., a spur gear, a miter gear, a crown gear, etc.) with an axis of rotation that is aligned with central axis 42 .
- Locking element 45 may protrude from an axial location that is slightly offset from a center of a length of elongate hinge element 41 , or positioned at any other location along the length of elongate hinge element 41 .
- Hinge 40 may include a microadjustment element 47 .
- Microadjustment element 47 may comprise a gear or threaded element that is configured to engage a separate microadjustment screw ( FIG. 9 ).
- microadjustment element 47 comprises a worm gear with an axis of rotation that coincides with central axis 42 of elongate hinge element 41 .
- a hinge 40 ′ that incorporates teachings off the present invention may include a microadjustment element 47 ′ at an end of an elongate hinge element 41 ′.
- a hinge 40 ′′ may include a microadjustment element 47 ′′ at a central location of elongate hinge element 41 a ′′, 41 b ′′, in which case elongate hinge element 41 a ′′, 41 b ′′ rotates, about its central axis 42 ′′, relative to microadjustment element 47 ′′.
- microadjustment element 47 ′, 47 ′′ may include a recess 48 ′, 48 ′′ with engagement features 49 ′, 49 ′′ that are respectively configured to receive and engage complementary engagement features 85 of a microadjustment screw 84 ( FIG. 9 ) as hinge 40 ′, 40 ′′ or microadjustment screw 84 is actuated to cause one of microadjustment element 47 ′, 47 ′′ and microadjustment screw 84 ( FIG. 9 ) to engage the other (e.g., by sliding hinge 40 ′, 40 ′′ along, its central axis 42 ′, 42 ′′, as shown in FIGS. 3 and 4 ; etc.).
- engagement features 49 ′, 49 ′′ may comprise threads complementary to threads on microadjustment screw 84 , slots recessed in a surface of recess 48 ′, 48 ′′ and oriented to engage complementary splines protruding from the outer surface of microadjustment screw 84 , or any other suitable engagement features that cooperate with corresponding engagement features on microadjustment screw 84 .
- member 50 of handle 20 may include two pieces 52 and 72 that are configured to be assembled with each other, with each piece 59 , 72 forming a side half of member 50 .
- Each piece 52 , 72 includes a proximal portion 54 , 74 , an intermediate portion 56 , 76 adjacent to proximal portion 54 , 74 , and a distal portion 58 , 78 adjacent to intermediate portion 56 , 76 .
- proximal portion 54 , 74 and distal portion 58 , 78 may be located on substantially opposite sides of intermediate portion 56 , 76 .
- Proximal portion 54 , 74 is configured to be grasped by a first portion of a hand. In the illustrated embodiment, proximal portion 54 , 74 is configured to be grasped by fingers of a hand.
- Distal portion 58 , 78 may be configure d to be coupled (e.g., pivotally) to a first part of a syringe, such as a syringe plunger.
- hinge elements 59 and 79 which are configured to align and to be assembled with each other, protrude from inner surfaces 53 ( FIG. 5 ) and 73 ( FIG. 9 ) of pieces 52 and 72 . respectively.
- Hinge elements 59 and 79 may be configured for receipt by an aperture in the proximal end of the syringe plunger.
- intermediate portions 56 and 76 When pieces 57 and 72 are assembled, intermediate portions 56 and 76 include spaced apart outer walls 60 and 80 that define a hollow interior 96 that is configured to receive a central portion of hinge 40 (or hinge 40 ′ or 40 ′′ ( FIGS. 3 and 4 )), including) a locking element 45 and/or microadjustment element 47 (or microadjustment element 47 ′ or 47 ′′).
- intermediate portion 56 , 76 may include an aperture 62 , 82 through each outer wall 60 , 80 .
- Apertures 62 and 82 may be axially aligned with each other, and may be configured to receive opposite sides of elongate hinge element 41 while permitting handle 50 to pivot freely about central axis 42 regardless of whether locking element 45 is engaged by a locking feature within either piece 52 , 72 .
- FIG. 5 illustrates an interior of piece 52 , which includes a locking feature 64 that engages locking element 45 of hinge 40 upon movement of hinge 40 from an intermediate position or unlocked position to a locked position.
- locking feature 64 may engage locking element 45 as hinge 40 is slid along central axis 42 ( FIG. 2 ).
- FIG. 6 shows hinge 40 in a locked position
- FIG. 7 shows hinge 40 in an unlocked position.
- Locking feature 64 may comprise a fixed or actuatable (e.g., with a button, slider, switch, etc.) element that limits rotation of hinge 40 in one or both directions.
- locking feature 64 comprises a stationary ratchet arm with a tip 65 that engages locking element 45 between teeth 46 thereof.
- the configurations (or orientations) of teeth 46 and tip 65 may allow hinge 40 to rotate in one direction (e.g., clockwise., as handles 50 and 100 ( FIGS. 1 and 2 ) are drawn together), but prevent the rotation of hinge 40 in the opposite direction (e.g., counterclockwise.
- a microadjustment screw 84 that includes engagement features 85 that are complementary to engagement features 46 (e.g. teeth, etc.) may be moved into and out of engagement with locking element 45 .
- an end of microadjustment screw 84 may, be associated with a handle 20 (see, e.g., FIG. 1 ) in such a way that microadjustment screw 84 pivots from the end thereof while remaining free to rotate.
- a knob (not shown) at the opposite end of microadjustment screw 84 may be moved to tilt engagement features 85 of microadjustment screw 84 into and out of engagement with engagement features 46 of locking element 45 .
- microadjustment element 47 is positioned within hollow interior 96 of intermediate portions 56 ( FIG. 5 ) and 76 .
- an end of a microadjustment screw 84 may be disposed within hollow interior 96 .
- microadjustment screw 84 may include features 85 that are configured to engage microadjustment element 47 .
- features 85 may comprise a thread of a worm, which engages teeth 48 of a microadjustment element 47 that comprises a worm gear.
- Microadjustment screw 84 may be held in place by cooperating mounts 66 ( FIG. 5 ) and 86 and stops 68 and 88 protruding from interior surfaces 70 ( FIG. 5 ) and 90 of pieces 52 and 72 , respectively, as pieces 52 and 72 are assembled with and secured to one another. As microadjustment screw 84 is rotated, microadjustment element 47 and hinge 40 also rotate.
- member 50 may pivot relative to hinge 40 ( FIGS. 1 and 2 ) regardless of whether hinge 40 is in a locked position or an unlocked position.
- hinge 40 may limit or prevent member 100 ( FIGS. 1 and 2 ) from pivoting.
- an intermediate portion 106 , 126 of each piece 102 , 122 of member 100 of handle 20 may include an aperture 112 , 132 that receives an end 43 , 44 of elongate hinge element 41 ( FIG. 2 ).
- Aperture 112 , 132 may have a configuration and dimensions that enable aperture 112 , 132 to receive end 43 , 44 of elongate hinge element 41 (or an end of elongate hinge element 41 ′ or 41 ′′ ( FIGS. 3 and 4 )).
- aperture 112 , 132 has a non-circular configuration and end 43 , 44 has substantially the same configuration with slightly smaller dimensions, pivotal movement of member 100 relative to hinge 40 is limited by the extent and direction to which hinge 40 may rotate about central axis 42 .
- the ability of member 100 to pivot is likewise limited.
- each piece 102 , 122 also includes a proximal portion 104 , 124 on one side of intermediate portion 106 , 126 and a distal portion 108 , 128 on another (e.g., opposite, etc.) side of intermediate portion 106 , 126 .
- Proximal portion 104 , 124 is configured to be grasped by another portion of a hand, such as by the thumb and palm of the same hand whose fingers grasp proximal portion 58 , 78 of member 50 .
- intermediate portions 106 and 126 may be spaced apart from one another so as to receive, or cradle, intermediate portions 56 and 76 of pieces 52 and 72 of handle 50 therebetween.
- Distal portion 108 , 128 may be configured to be coupled (e.g., pivotally) to a second part of a syringe (not shown), such as a syringe barrel.
- a syringe such as a syringe barrel.
- each distal portion 108 , 128 comprises an arm, with distal portions 108 and 128 spaced apart from one another when pieces 102 and 122 are assembled with and secured to each other.
- the second part of the syringe may be disposed between distal portions 108 and 128 .
- Each distal portion 108 , 128 may include a feature, such as the illustrated apertures 109 , 129 , that couples distal portions 108 and 128 to complementary features on the second part of the syringe; for example, hinge studs (not shown) protruding from opposite sides of a syringe barrel.
- the relative positions of members 50 and 100 of handle 20 may be locked into place merely by engaging microadjustment element 47 with microadjustment screw 84 .
- hinge 40 When hinge 40 is slid into an intermediate position (i.e., a position between the locked position shown in FIG. 6 and the unlocked position shown in FIG. 7 ) locking element 45 may be disengaged and microadjustment screw 84 may engage microadjustment element 47 . Since first member 50 is not locked directly to second member 100 , but is instead held in place by microadjustment screw 84 , microadjustment screw 84 prevents external pivotal movement of members 50 and 100 (e.g.
- microadjustment element 47 by rotating microadjustment screw 84 will, however, rotate elongate hinge element 42 . causing second handle 100 to pivot relative to first handle 50 .
- hinge 40 may be slid between unlocked, intermediate, and locked positions with a finger of thumb of a user's hand.
- a finger or thumb on the same hand that holds handle 20 may be used to move hinge 40 to the desired position.
- a spring 99 may be wrapped around and fixedly secured to hinge 40 , upper and lower arms 99 U and 99 L of spring 99 may be held substantially in place by two posts 97 and 98 protruding from an interior surface 5 ) of piece 52 .
- proximal portion 104 , 124 of member 100 pivots toward proximal end 54 , 74 of member 50 ( FIGS.
- intermediate portion 106 , 126 of member 100 causes hinge 40 to rotate., which introduces tension into lower arm 99 L of spring 99 .
- the resiliency of spring 99 rotates hinge 40 , causing proximal end 104 , 124 of member 100 to move away from proximal end 54 , 74 of member 50 . thereby returning handle 20 to an open orientation.
- FIGS. 12 and 13 embodiments of syringes that include handles with locking hinges are shown and described.
- FIG. 12 depicts an embodiment of power syringe 10 in which a first member 50 of a handle 20 and a second member 100 of handle 20 cross one another.
- first member 50 includes a proximal portion 54 , 74 that is configured to be held and operated by fingers of a user's hand and is pivotally connected to a plunger 152 of a syringe 150 .
- Second member 100 which includes a proximal end 104 , 124 that is configured to be held by a palm and thumb of the same hand, is pivotally coupled to a barrel 154 of syringe 150 .
- proximal ends 54 , 74 and 104 , 124 of members 50 and 100 are drawn toward one another, members 50 and 100 pivot about central axis 42 of hinge 40 , forcing distal ends 58 , 78 and 108 , 128 toward each other, and moving plunger 152 distally into barrel 154 .
- Power syringe 10 ′ also includes a first member 50 ′ and a second member 100 ′ that are connected by a hinge 40 .
- Proximal portion 54 ′, 74 ′ and distal portion 58 ′, 78 ′ of first member 50 ′ are, however, located on the same side of (behind, in the Figure) second member 100 ′.
- Proximal portion 54 ′, 74 ′ is configured to be held by the thumb and palm of a user's hand, while proximal portion 104 ′, 124 ′ of second member 100 ′ is configured to be held by fingers of the same hand.
- Distal portion 58 ′, 78 ′ of first member 50 ′ is pivotally coupled to a proximal end of a plunger 162 of a syringe 160
- distal portion 108 ′, 128 ′ of second member 100 ′ is pivotally coupled to a barrel 164 of syringe 160 .
Abstract
Description
- This application claims the benefit of priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 60/853,817, filed Oct. 24, 2006, the disclosure of which is hereby incorporated herein, in its entirety, by this reference
- The present invention relates generally to locking hinges for syringe handles configured to provide a user with a mechanical advantage while requiring the use of only one hand, even when a large amount of force is required to move a plunger through the barrel of a syringe. More specifically, the present invention relates to looking hinges that maintain relative positions of two members of syringe handles, as well as a position of a plunger within a barrel.
- In the drawings, which depict features of various aspects of the present invention:
-
FIG. 1 is a perspective view of an embodiment of a power syringe handle that includes members that are pivotally connected by an embodiment of locking hinge that incorporates teachings of the present invention; -
FIG. 2 is an assembly view of the handle shown inFIG. 1 , illustrating an embodiment of locking hinge according to teachings of the present invention; -
FIGS. 3 and 4 illustrate, in perspective, other embodiments of locking hinges; -
FIG. 5 is a plan view of an interior of a first piece of a first member of the embodiment of handle shown inFIGS. 1 and 2 ; -
FIG. 6 shows the embodiment of hinge shown inFIG. 2 slid into an unlocked position relative to the members of the handle shown inFIGS. 1 and 2 ; -
FIG. 7 shows the embodiment of hinge shown inFIG. 2 slid into a locked position relative to the members of the handle; -
FIG. 8 depicts another example of the manner in which a hinge that incorporates teachings of the present invention may be locked in place; -
FIG. 9 is a plan view of an interior of a second piece of the first member of the embodiment of handle shown inFIGS. 1 and 2 , which is configured for assembly with the first piece depicted inFIG. 5 ; -
FIG. 10 is a plan view of an outer surface of a first piece of a second member of the embodiment of handle shown inFIGS. 1 and 2 ; -
FIG. 11 is a plan view of an outer surface of a second piece of the second member of the embodiment of handle shown inFIGS. 1 and 2 , which is configured for assembly with the first piece illustrated inFIG. 10 ; -
FIG. 12 is a schematic representation of an embodiment of power syringe and its handle, which includes members that are pivotally connected to one another by a locking hinge according to embodiments of the present invention; and -
FIG. 13 schematically represents another embodiment of power syringe and its handle, which includes members that are pivotally connected by a locking hinge that incorporates teachings of the present invention. - With reference to
FIG. 1 , an embodiment of ahandle 20 for apower syringe FIGS. 12 and 13 ) is depicted.Handle 20 includes afirst member 50 that is configured for association with a first element (e.g. barrel or plunger) of a syringe (not shown) and asecond member 100 that is configured for association with a second element (e.g., plunger or barrel) of the syringe. In addition,handle 20 includes ahinge 40 that pivotally connectsfirst member 50 andsecond member 100 to each other. Hinge 40 is also configured to enablefirst member 50 andsecond member 100 to be locked into a plurality of different orientations—between an open orientation, in whichmembers members members hinge 40 may prevent or limit further movement ofmembers -
FIG. 2 illustrates, among other things, an embodiment ofhinge 40. Hinge 40 includes anelongate hinge element 41 with acentral axis 42, or axis of rotation about whichhinge 40 is intended to rotate, and twoends end elongate hinge element 41 is configured to engage a complementary portion ofmember FIG. 1 ). - As depicted,
elongate hinge element 41 includes twosections elongate hinge element 41,hinge 40 includes alocking element 45. In the depicted embodiment,locking element 45 may comprise a gear (e.g., a spur gear, a miter gear, a crown gear, etc.) with an axis of rotation that is aligned withcentral axis 42.Locking element 45 may protrude from an axial location that is slightly offset from a center of a length ofelongate hinge element 41, or positioned at any other location along the length ofelongate hinge element 41. - Hinge 40 may include a
microadjustment element 47.Microadjustment element 47 may comprise a gear or threaded element that is configured to engage a separate microadjustment screw (FIG. 9 ). In the depicted embodiment,microadjustment element 47 comprises a worm gear with an axis of rotation that coincides withcentral axis 42 ofelongate hinge element 41. - Alternatively, as shown in
FIG. 3 , ahinge 40′ that incorporates teachings off the present invention may include amicroadjustment element 47′ at an end of anelongate hinge element 41′. In another embodiment, depicted inFIG. 4 , ahinge 40″ may include amicroadjustment element 47″ at a central location ofelongate hinge element 41 a″, 41 b″, in which caseelongate hinge element 41 a″, 41 b″ rotates, about itscentral axis 42″, relative tomicroadjustment element 47″. - With continued reference to
FIGS. 3 and 4 , and by way of non-limiting example,microadjustment element 47′, 47″ may include arecess 48′, 48″ withengagement features 49′, 49″ that are respectively configured to receive and engagecomplementary engagement features 85 of a microadjustment screw 84 (FIG. 9 ) ashinge 40′, 40″ ormicroadjustment screw 84 is actuated to cause one ofmicroadjustment element 47′, 47″ and microadjustment screw 84 (FIG. 9 ) to engage the other (e.g., by slidinghinge 40′, 40″ along, itscentral axis 42′, 42″, as shown inFIGS. 3 and 4 ; etc.). Without limiting the scope of the embodiments shown inFIGS. 3 and 4 ,engagement features 49′, 49″ may comprise threads complementary to threads onmicroadjustment screw 84, slots recessed in a surface ofrecess 48′, 48″ and oriented to engage complementary splines protruding from the outer surface ofmicroadjustment screw 84, or any other suitable engagement features that cooperate with corresponding engagement features onmicroadjustment screw 84. - Returning reference to
FIG. 2 ,member 50 ofhandle 20 may include twopieces piece member 50. Eachpiece proximal portion intermediate portion proximal portion distal portion intermediate portion proximal portion distal portion intermediate portion -
Proximal portion proximal portion -
Distal portion hinge elements FIG. 5 ) and 73 (FIG. 9 ) ofpieces Hinge elements - When
pieces 57 and 72 are assembled,intermediate portions outer walls hollow interior 96 that is configured to receive a central portion of hinge 40 (or hinge 40′ or 40″ (FIGS. 3 and 4 )), including) alocking element 45 and/or microadjustment element 47 (ormicroadjustment element 47′ or 47″). In addition to defininghollow interior 96,intermediate portion aperture outer wall Apertures elongate hinge element 41 while permittinghandle 50 to pivot freely aboutcentral axis 42 regardless of whetherlocking element 45 is engaged by a locking feature within eitherpiece -
FIG. 5 illustrates an interior ofpiece 52, which includes alocking feature 64 that engageslocking element 45 ofhinge 40 upon movement ofhinge 40 from an intermediate position or unlocked position to a locked position. Without limiting the scope of the present invention,locking feature 64 may engagelocking element 45 ashinge 40 is slid along central axis 42 (FIG. 2 ).FIG. 6 shows hinge 40 in a locked position, whileFIG. 7 shows hinge 40 in an unlocked position.Locking feature 64 may comprise a fixed or actuatable (e.g., with a button, slider, switch, etc.) element that limits rotation ofhinge 40 in one or both directions. - In the embodiment illustrated in
FIG. 5 ,locking feature 64 comprises a stationary ratchet arm with atip 65 that engageslocking element 45 betweenteeth 46 thereof. The configurations (or orientations) ofteeth 46 andtip 65 may allowhinge 40 to rotate in one direction (e.g., clockwise., ashandles 50 and 100 (FIGS. 1 and 2 ) are drawn together), but prevent the rotation ofhinge 40 in the opposite direction (e.g., counterclockwise. - Alternatively as shown in
FIG. 8 , amicroadjustment screw 84 that includesengagement features 85 that are complementary to engagement features 46 (e.g. teeth, etc.) may be moved into and out of engagement withlocking element 45. By way of nonlimiting example, an end ofmicroadjustment screw 84 may, be associated with a handle 20 (see, e.g.,FIG. 1 ) in such a way that microadjustment screw 84 pivots from the end thereof while remaining free to rotate. Accordingly, a knob (not shown) at the opposite end ofmicroadjustment screw 84 may be moved to tilt engagement features 85 ofmicroadjustment screw 84 into and out of engagement with engagement features 46 oflocking element 45. - Of course, other means for engaging and limiting rotation of
locking element 45 and, thus, ofhinge 40, including other embodiments oflocking feature 64, are also within the scope of the present invention. - An interior of
piece 72 is shown inFIG. 9 . With end 43 (FIGS. 2 and 10 ) of hinge 40 (FIGS. 1 and 2 ) extending throughaperture 82,microadjustment element 47 is positioned withinhollow interior 96 of intermediate portions 56 (FIG. 5 ) and 76. Additionally, an end of amicroadjustment screw 84 may be disposed withinhollow interior 96. As shown,microadjustment screw 84 may includefeatures 85 that are configured to engagemicroadjustment element 47. As an example, features 85 may comprise a thread of a worm, which engagesteeth 48 of amicroadjustment element 47 that comprises a worm gear.Microadjustment screw 84 may be held in place by cooperating mounts 66 (FIG. 5 ) and 86 and stops 68 and 88 protruding from interior surfaces 70 (FIG. 5 ) and 90 ofpieces pieces microadjustment screw 84 is rotated,microadjustment element 47 and hinge 40 also rotate. - As noted previously, member 50 (
FIGS. 1 and 2 ) may pivot relative to hinge 40 (FIGS. 1 and 2 ) regardless of whetherhinge 40 is in a locked position or an unlocked position. When in the locked position, however, hinge 40 may limit or prevent member 100 (FIGS. 1 and 2 ) from pivoting. As shown inFIGS. 10 and 11 , anintermediate portion piece member 100 ofhandle 20 may include anaperture end FIG. 2 ).Aperture aperture end elongate hinge element 41′ or 41″ (FIGS. 3 and 4 )). In embodiments whereaperture member 100 relative to hinge 40 is limited by the extent and direction to which hinge 40 may rotate aboutcentral axis 42. Thus, when the rotation ofhinge 40 is prevented, or limited, the ability ofmember 100 to pivot is likewise limited. - With returned reference to
FIG. 2 , eachpiece proximal portion intermediate portion distal portion intermediate portion -
Proximal portion proximal portion member 50. - In addition to the features discussed above,
intermediate portions intermediate portions pieces handle 50 therebetween. -
Distal portion FIGS. 1 and 2 , eachdistal portion distal portions pieces distal portions distal portion apertures distal portions - Referring again to
FIGS. 1, 2 , 5, and 9, the relative positions ofmembers handle 20 may be locked into place merely by engagingmicroadjustment element 47 withmicroadjustment screw 84. Whenhinge 40 is slid into an intermediate position (i.e., a position between the locked position shown inFIG. 6 and the unlocked position shown inFIG. 7 ) lockingelement 45 may be disengaged andmicroadjustment screw 84 may engagemicroadjustment element 47. Sincefirst member 50 is not locked directly tosecond member 100, but is instead held in place bymicroadjustment screw 84,microadjustment screw 84 prevents external pivotal movement ofmembers 50 and 100 (e.g. by squeezingmembers microadjustment element 47 by rotatingmicroadjustment screw 84 will, however, rotateelongate hinge element 42. causingsecond handle 100 to pivot relative tofirst handle 50. - Due to its location and configuration, hinge 40 may be slid between unlocked, intermediate, and locked positions with a finger of thumb of a user's hand. In fact, a finger or thumb on the same hand that holds handle 20 may be used to move
hinge 40 to the desired position. - With reference once again to
FIG. 5 , aspring 99 may be wrapped around and fixedly secured to hinge 40, upper andlower arms 99U and 99L ofspring 99 may be held substantially in place by twoposts piece 52. Whenproximal portion member 100 pivots towardproximal end FIGS. 1 and 2 ),intermediate portion member 100 causes hinge 40 to rotate., which introduces tension intolower arm 99L ofspring 99, Oncemembers handle 20, the resiliency ofspring 99 rotates hinge 40, causingproximal end member 100 to move away fromproximal end member 50. thereby returninghandle 20 to an open orientation. - Turning now to
FIGS. 12 and 13 , embodiments of syringes that include handles with locking hinges are shown and described. -
FIG. 12 depicts an embodiment ofpower syringe 10 in which afirst member 50 of ahandle 20 and asecond member 100 ofhandle 20 cross one another. In the depicted embodiment,first member 50 includes aproximal portion plunger 152 of asyringe 150.Second member 100, which includes aproximal end barrel 154 ofsyringe 150. When proximal ends 54, 74 and 104, 124 ofmembers members central axis 42 ofhinge 40, forcing distal ends 58, 78 and 108, 128 toward each other, and movingplunger 152 distally intobarrel 154. - Another embodiment of
power syringe 10′ is shown inFIG. 13 .Power syringe 10′ also includes afirst member 50′ and asecond member 100′ that are connected by ahinge 40.Proximal portion 54′, 74′ anddistal portion 58′, 78′ offirst member 50′ are, however, located on the same side of (behind, in the Figure)second member 100′.Proximal portion 54′, 74′ is configured to be held by the thumb and palm of a user's hand, whileproximal portion 104′, 124′ ofsecond member 100′ is configured to be held by fingers of the same hand.Distal portion 58′, 78′ offirst member 50′ is pivotally coupled to a proximal end of aplunger 162 of asyringe 160, whiledistal portion 108′, 128′ ofsecond member 100′ is pivotally coupled to abarrel 164 ofsyringe 160. With this arrangement, when proximal ends 54′, 74′ and 104′, 124′ of members 500′ and 100′, respectively, are drawn toward one another,members 50′ and 100′ pivot aboutcentral axis 42 ofhinge 40, forcing distal ends 58′, 78′ and 108′, 128′ apart from one another, movingplunger 162 proximally out ofbarrel 164. - While specific embodiments of handles and power syringes are described and illustrated, it should be recognized that a locking hinge that incorporates teachings of the present invention is useful in a variety embodiments of power syringe handles, including without limitation, with the handles of the power syringes described in U.S. Pat. No. 7,041,084, U.S. Patent Application Publication US-2006-0270996-A1, U.S. patent application Ser. No. 11/431,420, filed May 8, 2006, in U.S. Provisional Patent Application Ser. No. 60/853,878, filed Oct. 24, 2006, and in the non-provisional version of that provisional application, titled “DOUBLE BARREL SYRINGE AND ASSOCIATED METHODS” and filed on Oct. 23, 2007, the entire disclosure of each of which is, by this reference, hereby incorporated herein.
- Although the foregoing, description contains many specifics, these should not be construed as limiting the scope of the present invention, but merely as providing illustrations of some of the presently preferred embodiments. Similarly, other embodiments of the invention may be devised which do not depart from the spirit or scope of the present invention. Features from different embodiments may be employed in combination. The scope of the invention is, therefore, indicated and limited only by the appended claims and their legal equivalents, rather than by the foregoing description. All additions, deletions and modifications to the invention as disclosed herein which fall within the meaning and scope of the claims are to be embraced thereby.
Claims (25)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/923,514 US20080098564A1 (en) | 2006-10-24 | 2007-10-24 | Locking Hinges for Syringe Handles, Syringes Including Locking Hinges, and Associated Methods |
EP08746636A EP2219715A1 (en) | 2007-10-24 | 2008-04-23 | Hinge assembly for an injector |
PCT/US2008/061249 WO2009055087A1 (en) | 2007-10-24 | 2008-04-23 | Hinge assembly for an injector |
US12/738,845 US8539644B2 (en) | 2006-10-24 | 2008-04-23 | Hinge assembly for an injector |
US14/010,571 US20130345644A1 (en) | 2007-10-24 | 2013-08-27 | Hinge Assembly for an Injector |
Applications Claiming Priority (2)
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US85381706P | 2006-10-24 | 2006-10-24 | |
US11/923,514 US20080098564A1 (en) | 2006-10-24 | 2007-10-24 | Locking Hinges for Syringe Handles, Syringes Including Locking Hinges, and Associated Methods |
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US12/738,845 Continuation US8539644B2 (en) | 2006-10-24 | 2008-04-23 | Hinge assembly for an injector |
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US20080098564A1 true US20080098564A1 (en) | 2008-05-01 |
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US11/923,514 Abandoned US20080098564A1 (en) | 2006-10-24 | 2007-10-24 | Locking Hinges for Syringe Handles, Syringes Including Locking Hinges, and Associated Methods |
US12/738,845 Active 2029-02-08 US8539644B2 (en) | 2006-10-24 | 2008-04-23 | Hinge assembly for an injector |
US14/010,571 Abandoned US20130345644A1 (en) | 2007-10-24 | 2013-08-27 | Hinge Assembly for an Injector |
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Application Number | Title | Priority Date | Filing Date |
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US12/738,845 Active 2029-02-08 US8539644B2 (en) | 2006-10-24 | 2008-04-23 | Hinge assembly for an injector |
US14/010,571 Abandoned US20130345644A1 (en) | 2007-10-24 | 2013-08-27 | Hinge Assembly for an Injector |
Country Status (3)
Country | Link |
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US (3) | US20080098564A1 (en) |
EP (1) | EP2219715A1 (en) |
WO (1) | WO2009055087A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
WO2009055087A1 (en) | 2009-04-30 |
EP2219715A1 (en) | 2010-08-25 |
US8539644B2 (en) | 2013-09-24 |
US20100274197A1 (en) | 2010-10-28 |
US20130345644A1 (en) | 2013-12-26 |
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