Abstract: A dosage verification system for use prior to administering an injection of a medicinal fluid drawn into a medical syringe, the system comprising a medical syringe having a barrel with an outwardly facing, flat indicia display surface, plunger having a plunger seal disposed inside and slidably engaging an inwardly facing wall of the barrel and a plunger handle projecting rearwardly from the barrel, and a hypodermic needle projecting forwardly from the barrel, all in combination with an imaging device configured to view and selectively capture, store or transmit a digital image of the plunger position relative to the barrel when a dose of the medicinal fluid is drawn into the fluid chamber of the barrel prior to an injection to verify and provide a record of the dosage drawn, and to alert a user prior to injection when an incorrect dosage is drawn into the fluid chamber of the syringe.

Abstract: A device configured to receive and safely store a plurality of used needle-containing medical apparatus such as syringes, IV catheter introducers, bodily fluid collection devices and blood collection tube holders and to dispense a sterile medical apparatus having the same or a similar shape, size and configuration as that deposited into the device.

Abstract: A dosage verification system for use prior to administering an injection of a medicinal fluid drawn into a medical syringe, the system comprising a medical syringe having a barrel with an outwardly facing, flat indicia display surface, plunger having a plunger seal disposed inside and slidably engaging an inwardly facing wall of the barrel and a plunger handle projecting rearwardly from the barrel, and a hypodermic needle projecting forwardly from the barrel, all in combination with an imaging device configured to view and selectively capture, store or transmit a digital image of the plunger position relative to the barrel when a dose of the medicinal fluid is drawn into the fluid chamber of the barrel prior to an injection to verify and provide a record of the dosage drawn, and to alert a user prior to injection when an incorrect dosage is drawn into the fluid chamber of the syringe.

Abstract: A syringe for medical use, the syringe having a selectively retractable needle and a multifunctional needle holder and retainer ring assembly including a needle holder with a head section having an inwardly tapering frustoconical section of the fluid pathway and a rearwardly facing annular surface surrounding the rear opening, and an elastomeric retainer ring with a substantially unexpanded collar extending rearwardly beyond the rearwardly facing annular surface to increase needle pushout force, reduce activation force and improve fluid flow through the syringe. Annular projections inside the retainer ring and on the outer surface of the head section of the needle holder are also disclosed.

Abstract: A dental safety syringe comprising selectively attachable barrel and plunger assemblies, the barrel assembly desirably further comprising a needle cartridge containing a needle holder and spring, and having a distal end from which a needle can be made to project forwardly while administering a medication and then subsequently withdrawn into the needle cartridge to avoid contamination following or between injections. The needle cartridge also comprises a proximal end having a recess into which an ampule containing medication can be inserted prior to connecting the plunger assembly to the barrel assembly so that a rubber dam in the distal end of the ampule is pierced by the proximal end of the needle whenever the syringe is fully assembled.

Abstract: An intravenous catheter introducer for medical use having a body, a frontal attachment that is disposed in transverse sliding engagement with a front part of the body, a hub tube assembly that is releasably supported by the frontal attachment, and a retractable catheter insertion needle and needle holder that are biased rearwardly by a spring offset laterally from the needle axis, whereby lateral repositioning of the body relative to the frontal attachment following vascular insertion moves a needle retraction cavity disposed inside the body into substantial coaxial alignment and causes the needle holder to be retracted into the needle retraction cavity.

Abstract: A medical device configured as a blood collection tube holder, the device having a body with two spaced-apart, oppositely facing, coaxially aligned needles including a forwardly facing venipuncture needle and a rearwardly facing fluid discharge needle, the two needles being held by first and second needle holders separated by a compressible fluid seal defining part of a fluid path between the two needles and the two needle holders. The body also includes a discharge needle displacement member that is manually repositioned following removal of the last blood tube holder so that the discharge needle displacement member contacts the second needle holder and displaces the second needle holder and the fluid discharge needle laterally inside the body to initiate retraction of the venipuncture needle into a rearwardly projecting needle retraction chamber.

Abstract: A medical device useful for collecting samples of a bodily fluid, typically a vascular fluid such as blood. The subject device can also be used for infusing liquids into a patient. The fluid flow path desirably includes a forwardly projecting, rearwardly biased needle, a needle holder and a length of plastic tubing, the forwardly extending end of which is configured to function as a fluid seal to reduce the likelihood of fluid leakage during or after use. Following use, the needle is retractable from the patient by sliding a needle retraction cavity transversely into longitudinal alignment with the needle, thereby disrupting the fluid flow path and propelling the needle rearwardly so that it no longer projects from the device.

Abstract: A safety syringe comprising a needle redirection device that is desirably configured to bend the needle shaft forwardly of the barrel following an injection to thereby redirect the needle tip from a first position where it projects forwardly in coaxial alignment with the syringe barrel to a second position where the needle tip is covered or protected from incidental or accidental contact and associated needle sticks. Both sliding and pivoting embodiments are disclosed.

Abstract: A frontal attachment for a conventional aspirating dental syringe comprising a barrel connector housing releasably attachable to the front end of the barrel of an aspirating dental syringe, an injection needle guide attached to the barrel connector housing, an injection needle attached to and supported by a needle holder assembly reciprocatably disposed in a needle guide slot between the injection needle guide and the barrel connector housing in oblique relation to the longitudinal axis of the aspirating dental syringe, and a second needle projecting rearwardly from the barrel connector housing to establish fluid communication with a carpule disposed in the conventional aspirating dental syringe.

Abstract: A blood collection tube holder embodying two coaxially alignable needles, the first needle being a forwardly facing venipuncture needle and the second needle being a rearwardly facing fluid discharge needle. The first and second needles are satisfactorily supported by a frontal attachment and body, respectively, that are disposed in relative sliding engagement along an interface that is transverse to the first and second needle and that extends at least from the second needle to an opening into a needle retraction chamber that projects rearwardly from the body. The subject device is configured to receive and support a conventional blood collection tube of the type used to collect blood samples.

Abstract: A medical device having a forwardly-projecting needle and a selectively-movable needle cap that can be variously positioned to cover all or a portion of the needle, depending upon whether the device is, for example, being transported, aspirated or used to inject a therapeutic fluid. The device can optionally be configured to enable retraction of the needle into the body for safe disposal following use.

Abstract: A medical device attachable to the front of a conventional syringe and having a hub assembly selectively attachable to the syringe, a nose projecting forwardly from the hub assembly, a rearwardly biased needle retraction mechanism seated inside the nose, a retractable needle projecting forwardly of the nose, and a fluid flow path from the fluid chamber through the hub assembly, nose, needle retraction assembly and needle, wherein the needle is retracted into the nose and a retraction tube external to the syringe by rotating the syringe relative to the nose.