Retractable needle/syringe devices for blood collection, catheterization, and medicinal injection procedures
First Claim
1. A retractable hypodermic needle/syringe device adapted for use in fluid collection and dispensing procedures, comprising:
- an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough;
a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again;
a hollow hypodermic needle disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position;
translation means for forwardly translating said barrel member within said housing from said first position to said second position;
locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby maintaining said second open end of said needle in a projected state without assistance from the user of said device;
drawing and dispensing means slidably received within said barrel member, said drawing and dispensing means adapted to draw fluid into and dispense said fluid from said barrel member via said needle; and
resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing.
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Accused Products
Abstract
Retractable needle/syringe devices for blood collection, catheterization, and medicinal injection procedures adapted to fixedly project the needle from a device housing to perform the procedure, and, after the procedure is completed, retract the needle back into the housing for disposal, substantially without risk of persons handling these devices coming into contaminating contact with a used needle or syringe. One embodiment of the device including a needle/syringe assembly spring biased in a first position within a housing. A push button locking mechanism disposed through the top of the housing in abutting alignment with the syringe barrel is operated to forwardly translate the syringe to a second position and lock it in place so as to fixedly project the needle from the housing. A plunger arm perpendicularly connected to the syringe plunger and projecting out of the housing through cooperating apertures formed on the syringe barrel and housing is operated to draw fluid (blood or medicament) into and discharge fluid from the syringe barrel. Thereafter, the push button is operated again to release the locking mechanism and retract the needle back into the housing. For use in medicinal injection procedures, an ampule filled with an injectant and formed with a front seal and a movable rear seal is frictionally enclosed by the barrel. A plunger mechanism connected to the rear seal of the ampule is operated to translate the ampule forward until the portion of the needle disposed within the barrel penetrates the front seal of the ampule and establishes fluid communication with the injectant. The front of the barrel provides a stop against further forward movement of the ampule pursuant to which further pressure applied to the knob will cause the rear seal to move forward so as to discharge the injectant from the ampule.
287 Citations
21 Claims
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1. A retractable hypodermic needle/syringe device adapted for use in fluid collection and dispensing procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; translation means for forwardly translating said barrel member within said housing from said first position to said second position; locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby maintaining said second open end of said needle in a projected state without assistance from the user of said device; drawing and dispensing means slidably received within said barrel member, said drawing and dispensing means adapted to draw fluid into and dispense said fluid from said barrel member via said needle; and resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing. - View Dependent Claims (2, 6)
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3. A retractable hypodermic needle/syringe device adapted for use in fluid collection and dispensing procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; a piston member slidably disposed through said first end portion of said housing in abutting alignment with said back end portion of said barrel member, said piston member formed with a push button portion projecting outwardly of said housing, said piston member translating forwardly within said housing in response to forward pressure applied to said push button so as to move said barrel member from said first position to said second position; locking means cooperating with said piston member for automatically releasably locking said barrel member in said second position and thereby fixedly projecting said second open end of said needle out of said housing, said piston member translating backwardly in response to the release of said locking means so as to allow said barrel member to return to said first position; drawing and dispensing means slidably received within said barrel member, said drawing and dispensing means adapted to draw fluid into and dispense said fluid from said barrel member via said needle; and resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said piston member so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing. - View Dependent Claims (4)
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5. A retractable hypodermic needle/syringe device adapted for use in fluid collection and dispensing procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; translation means for forwardly translating said barrel member within said housing from said first position to said second position; locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby fixedly projecting said second open end of said needle out of said housing; a plunger member slidably disposed within said barrel member, said plunger member connected to an operator arm projecting out of said housing through cooperating elongated apertures formed on said barrel member and said housing, said plunger member backwardly translatable within said barrel member in response to backward pressure applied to said operator arm so as to selectively draw said fluid into said barrel member through said needle, said plunger member forwardly translatable within said barrel member in response to forward pressure applied to said operator arm so as to selectively dispense said fluid from said barrel member through said needle; and resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing.
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7. A retractable hypodermic needle/syringe device adapted for use in fluid collection and dispensing procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle member disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; a plunger member slidably disposed with said barrel member, said plunger member being connected to an operator arm projecting out of said housing through cooperating elongated apertures formed on said barrel member and said housing, said plunger member backwardly translatable within said barrel member in response to backward pressure applied to said operator arm so as to selectively draw fluid into said barrel member through said needle, said plunger member forwardly translatable within said barrel member in response to forward pressure applied to said operator arm so as to selectively discharge said fluid from said barrel member through said needle; translation means for forwardly translating said barrel member within said housing from said first position to said second position; locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby fixedly projecting said second open end of said needle out of said housing; and a coil spring member encircling said needle in abutting alignment between said barrel member and said second end portion of said housing so as to bias said barrel member in said first position, said spring member yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said spring member urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing. - View Dependent Claims (8, 9, 10)
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11. A retractable hypodermic needle/syringe device adapted for use in medicinal injection procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle member disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open and extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; translation means for forwardly translating said barrel member within said housing from said first position to said second position; locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby maintaining said second open end of said needle in a projected state without assistance from the user of said device; resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing; an ampule slidably received within said barrel member in frictional engagement therewith and containing a liquid medicament to be administered to a patient by injection, said ampule being formed with a first seal member at one end thereof, said ampule forwardly translatable within said barrel member to as to cause said first open end of said needle to penetrate said first seal member and thereby place said needle in fluid communication with said medicament, said ampule further being backwardly translatable within said barrel member so as to aspirate for blood prior to injecting said medicament; stop means engaging said ampule so as to prevent further forward translation thereof subsequent to said needle establishing said fluid communication with said medicament; and plunger means for forwardly translating said ampule so as to effectuate said fluid communication between said needle and said medicament and backwardly translating said ampule so as to aspirate said needle, said plunger means being adapted to selectively dispense said medicament from said ampule upon engagement of said ampule with said stop means. - View Dependent Claims (12, 15, 16, 20, 21)
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13. A retractable hypodermic needle/syringe device adapted for use in medicinal injection procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle member disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said member to said second position; a piston member slidably disposed through said first end portion of said housing in abutting alignment with said back end portion of said barrel member, said piston member formed with a push button portion projecting outwardly of said housing, said piston member translating forwardly within said housing in response to forward pressure applied to said push button so as to move said barrel member from said first position to said second position; locking means cooperating with said piston member for automatically releasably locking said barrel member in said second position and thereby fixedly projecting said second open end of said needle out of said housing, said piston member translating backwardly in response to the release of said locking means so as to allow said barrel member to return to said first position; resilient means disposed within said housing to bias said barrel member in said first position, said resilient means yieldingly urging said barrel member forwardly to said second position in response to operation of said piston member so as to project said second open end of said needle from said housing, said resilient means resiliently urging said barrel member back to said first position in response to the release of said locking means such that said second open end of said needle fully retracts into said housing; an ampule slidably received within said barrel member in frictional engagement therewith and containing a liquid medicament to be administered to a patient by injection, said ampule being formed with a first seal member at one end thereof, said ampule forwardly translatable within said barrel member so as to cause said first open end of said needle to penetrate said first seal member and thereby place said needle in fluid communication with said medicament, said ampule further being backwardly translatable within said barrel member so as to aspirate for blood prior to injecting said medicament; stop means engaging said ampule so as to prevent further forward translation thereof subsequent to said needle establishing said fluid communication with said medicament; and plunger means for forwardly translating said ampule so as to effectuate said fluid communication between said needle and said medicament and backwardly translating said ampule so as to aspirate said needle, said plunger means being adapted to selectively dispense said medicament from said ampule upon engagement of said ampule with said stop means. - View Dependent Claims (14)
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17. A retractable hypodermic needle/syringe device adapted for use in medicinal injection procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member disposed within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle member disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; translation means for forwardly translating said barrel member within said housing from said first position to said second position; locking means cooperating with said translation means for automatically releasably locking said barrel member in said second position and thereby maintaining said second open end of said needle in a projected state without assistance from the user of said device; a coil spring member encircling said needle in abutting alignment between said barrel member and said second end portion of said housing so as to bias said barrel member in said first position, said spring member yieldingly urging said barrel member forwardly to said second position in response to operation of said translation means so as to project said second open end of said needle from said housing, said spring member urging said barrel member back to said first position in response to the release of said locking means such that second open end of said needle fully retracts into said housing; an ampule slidably received within said barrel member in frictional engagement therewith and containing a liquid medicament to be administered to a patient by injection, said ampule formed with a first seal member at one end thereof, said ampule forwardly translatable within said barrel member so as to cause said first open end of said needle to penetrate said first seal member and thereby place said needle in fluid communication with said medicament, said ampule further being backwardly translatable within said barrel member so as to aspirate for blood prior to injecting said medicament; stop means engaging said ampule so as to prevent further forward translation thereof subsequent to said needle establishing said fluid communication with said medicament; and plunger means for forwardly translating said ampule so as to effectuate said fluid communication between said needle and said medicament and backwardly translating said ampule so as to aspirate said needle, said plunger means being adapted to selectively dispense said medicament from said ampule upon engagement of said ampule with said stop means.
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18. A retractable hypodermic needle/syringe device adapted for use in medicinal injection procedures, comprising:
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an elongated, substantially tubular housing, said housing having a first end portion and an opposite second end portion, said second end portion having an opening therethrough; a barrel member slidably received within said housing and being formed with a front end portion adjacent said second end portion of said housing and a closed back end portion, said barrel member slidably translatable within said housing forwardly from a first position to a second position and back again; a hollow hypodermic needle member disposed adjacent said second end portion of said housing in fixed engagement with said front end portion of said barrel member, said needle formed with a first open end extending into said barrel member and a second open end axially aligned with said opening in said second end portion of said housing, said second open end of said needle passing through said opening and projecting out of said housing upon forward translation of said barrel member to said second position; a piston member slidably disposed through said first end portion of said housing in abutting alignment with said back end portion of said barrel member, said piston member formed with a push button portion projecting outwardly of said housing, said piston member translating forwardly within said housing in response to forward pressure applied to said push button so as to move said barrel member from said first position to said second position; locking means cooperating with said piston member for automatically releasably locking said barrel member in said second position and thereby fixedly projecting said second open end of said needle out of said housing, said piston member translating backwardly in response to the release of said locking means so as to allow said barrel member to return to said first position; a coil spring member encircling said needle in abutting alignment between said barrel member and said second end portion of said housing so as to bias said barrel member in said first position, said spring member yieldingly urging said barrel member forwardly to said second position in response to operation of said piston member so as to project said second open end of said needle from said housing, said spring member urging said barrel member back to said first position in response to the release of said locking means such that second open end of said needle fully retracts into said housing; an ampule slidably received within said barrel member in frictional engagement therewith and containing a liquid medicament to be administered to a patient by injection, said ampule formed with a first seal member at one end thereof, said ampule forwardly translatable within said barrel member so as to cause said first open end of said needle to penetrate said first seal member and thereby place said needle in fluid communication with said medicament, said ampule further being backwardly translatable within said barrel member so as to aspirate for blood prior to injecting said medicament; stop means engaging said ampule so as to prevent further forward translation thereof subsequent to said needle establishing said fluid communication with said medicament; and plunger means for forwardly translating said ampule so as to effectuate said fluid communication between said needle and said medicament and backwardly translating said ampule so as to aspirate said needle, said plunger means being adapted to selectively dispense said medicament from said ampule upon engagement of said ampule with said stop means. - View Dependent Claims (19)
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Specification