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US 12,268,848 B2Granted
Syringe with flat indicia display surface
AssigneeRetractable Technologies, Inc.
InventorsThomas J. Shaw, Mark Small, Ni Zhu
Life of this patent
Estimating the term…
Abstract
A medical syringe having a barrel with a substantially cylindrical, longitudinally extending fluid chamber, a needle retraction cavity substantially coextensive in length with the fluid chamber and disposed adjacent and parallel to the fluid chamber, and at least one substantially flat, outwardly facing display area configured to receive and display an array of volumetric measuring indicia in alignment with and proximal to the fluid chamber.
Claims41
A syringe for medical use, comprising:
- a barrel comprising (1) a proximal end, (2) a distal end, (3) a fluid chamber comprising a cylindrical sidewall, (4) a needle retraction cavity disposed parallel to, longitudinally coextensive with, and laterally offset and separated from the fluid chamber by a first portion of the cylindrical sidewall that provides the needle retraction cavity with a non-circular cross-section, and (5) an outer wall comprising a substantially flat indicia display portion;
- a plunger configured to slidably engage with an interior surface of the cylindrical sidewall of the fluid chamber;
- and
- a frontal attachment disposed at the proximal end of the barrel and comprising a retractable needle;
- wherein the barrel is unitarily molded as one piece;
- wherein the frontal attachment is configured to be slidably engageable with the proximal end of the barrel in a direction transverse to a longitudinal axis of the fluid chamber to move the retractable needle from a first position aligned with the fluid chamber prior to retraction of the retractable needle to a second position aligned with the needle retraction cavity to initiate retraction of the retractable needle upon actuation of the frontal attachment;
- wherein the substantially flat indicia display portion is contiguous with and extends laterally in a single direction from a second portion of the cylindrical sidewall of the fluid chamber;
- and
- wherein an array of indicia comprising a volumetric dosage scale is disposed on the substantially flat indicia display portion.
6 more elements
A medical syringe, comprising:
- a one-piece barrel comprising a cylindrical fluid chamber, a non-cylindrical needle retraction cavity laterally spaced apart from and sharing a common interior wall with the cylindrical fluid chamber, and a flat indicia display extending across the common interior wall and over at least a portion of the cylindrical fluid chamber and at least a portion of the non-cylindrical needle retraction cavity;
- a needle that projects forwardly from the one-piece barrel when in an injection position communicating with the cylindrical fluid chamber to establish a coaxially aligned fluid flow path between the cylindrical fluid chamber and the needle;
- and
- a retraction actuator disposed at a forward end of the one-piece barrel and comprising an arm that extends laterally beyond an outer edge of the one-piece barrel, the retraction actuator slidably engageable with the barrel to initiate retraction of the needle into the needle retraction cavity upon application of pressure on a distal end of the arm;
- and
- wherein the flat indicia display does not extend over the distal end of the arm.
3 more elements
A medical syringe, comprising:
- a one-piece barrel comprising (1) an upper wall, (2) a lower wall, (3) a first curved sidewall, (4) a second sidewall, (5) a curved inner wall in direct contact with the upper wall and the lower wall, (6) a cylindrical fluid chamber partially formed by the first curved sidewall and the curved inner wall, and (7) a needle retraction cavity formed by a portion of the upper wall, a portion of the lower wall, the second sidewall, and the curved inner wall, wherein the curved inner wall separates the cylindrical fluid chamber from the needle retraction cavity to provide the cylindrical fluid chamber with a circular cross-sectional shape and provide the needle retraction cavity with a non-circular cross-sectional shape;
- a needle projecting forwardly from the one-piece barrel in coaxial alignment with the cylindrical fluid chamber;
- a volumetric scale at least partially disposed on a substantially flat surface, wherein the substantially flat surface is longitudinally coextensive with and contiguous to each of the first curved sidewall and the second sidewall, overlies a portion of the cylindrical fluid chamber to permit direct viewing by a user of a medicinal fluid drawn into the cylindrical fluid chamber through the needle, and overlies a portion of the needle retraction cavity to allow viewing of the needle after retraction of the needle, wherein at least one of the upper wall and the lower wall comprises the substantially flat surface.
A medical syringe useful for administering an injection of medicinal fluid, comprising:
- a transparent one-piece barrel comprising (1) an inwardly facing curved wall defining at least a first portion of a cylindrical fluid chamber and at least a first portion of a needle retraction cavity to provide the needle retraction cavity with a non-circular cross-sectional shape, (2) an outwardly facing wall section unitarily molded together with the inwardly facing wall, the outwardly facing wall section comprising a substantially flat portion that extends laterally across the inwardly facing wall and overlies in direct contact with at least a second portion of the cylindrical fluid chamber and at least a second portion of the needle retraction cavity, and (3) a volumetric scale comprising numeric indicia;
- a plunger handle with a plunger seal slidably engaging the inwardly facing wall;
- and
- a forwardly projecting needle coaxially aligned with the cylindrical fluid chamber to establish a coaxially aligned fluid flow path between the cylindrical fluid chamber and the forwardly projecting needle;
- wherein at least a portion of the volumetric scale is disposed on the substantially flat portion to allow a user of the medical syringe to view the plunger seal and to view a medicinal fluid drawn into any portion of the cylindrical fluid chamber directly through the inwardly facing wall defining the cylindrical fluid chamber.
2 more elements
A barrel for a medical syringe, the barrel comprising:
- a fluid chamber having an interior surface that is circular in cross-section;
- a needle retraction cavity having (1) an interior surface that is non-circular in cross-section, (2) a first substantially flat sidewall, (3) a second substantially flat sidewall, and (4) an interior curved sidewall, wherein the interior curved sidewall is common to the fluid chamber, is curved inwardly towards the needle retraction cavity, and separates the fluid chamber from the needle retraction cavity to at least partially form the interior surface of the needle retraction cavity that is non-circular in cross-section;
- an outer wall comprising the first substantially flat sidewall, the second substantially flat sidewall, and a curved wall that forms an outer surface of a part of the fluid chamber, wherein each of the first substantially flat sidewall and the second substantially flat sidewall extends laterally over a portion of each of the fluid chamber and the needle retraction cavity and across the interior curved sidewall, and wherein each of the first substantially flat sidewall and the second substantially flat sidewall is contiguous with the curved wall;
- and
- at least one indicia display disposed on the first substantially flat sidewall;
- and
- a needle retraction actuator slidably engaged with the barrel and configured to reposition a retractable needle from a first position in which the retractable needle is aligned with the fluid chamber to a second position in which the retractable needle is aligned with the needle retraction cavity to initiate retraction of the retractable needle into the needle retraction cavity.
4 more elements
A medical syringe, comprising:
- a barrel comprising a substantially flat outer wall that overlies at least portion of a cylindrical fluid chamber having a circular cross-section and a needle retraction chamber having a non-circular cross-section that is defined at least partially by a common wall shared between the cylindrical fluid chamber and the needle retraction chamber;
- a needle retraction actuator slidably engaged with the barrel and configured to reposition a retractable needle from a first position in which the retractable needle is aligned with the cylindrical fluid chamber to a second position in which the retractable needle is aligned with the needle retraction chamber to initiate retraction of the retractable needle into the needle retraction chamber;
- and
- a volumetric scale disposed on the substantially flat outer wall;
- wherein the barrel is unitarily molded as a single piece;
- wherein the barrel and volumetric scale are configured to allow a user to directly view a fluid within the cylindrical fluid chamber through the substantially flat outer wall and to simultaneously view the fluid and the volumetric scale;
- and
- wherein the cylindrical fluid chamber is configured for a useable fluid volume of 1 mL or less.
5 more elements
A medical syringe, comprising:
- a barrel comprising a curved surface and a substantially flat surface that is contiguous with the curved surface and extends laterally from an end of the curved surface at least partially across each of a cylindrical fluid chamber and a needle retraction chamber that are divided by a common curved interior wall that intersects the substantially flat surface and provides the cylindrical fluid chamber with a circular cross-section and the needle retraction chamber with a non-circular cross-section;
- a volumetric scale disposed on the substantially flat surface;
- and
- a needle retraction actuator slidably engaged with the barrel and configured to reposition a retractable needle from a first position in which the retractable needle is aligned with the cylindrical fluid chamber to a second position in which the retractable needle is aligned with the needle retraction chamber to initiate retraction of the retractable needle into the needle retraction chamber.
1 more element
Dependencies are inferred from the claim text.