Syringe with controllable breaking features

A hand-held aspiration syringe configured for one-handed operation, comprising:

• a plunger having
• a seal at a forward end thereof,
• a push button at a rear end thereof,
• an internal plunger arm attached at a rear end thereof to the rear plunger handle and to the seal at a forward end thereof,
• an external plunger arm attached at a rear end thereof to the rear plunger handle and to a front plunger handle at a forward end thereof, the internal plunger arm being arranged adjacent to the external plunger arm, and
• wherein the front plunger handle extends radially away from the external plunger arm and having two portions separated to each receive a different forefinger of a user,
• a barrel having
• a wall with an inner diameter that defines a hollow syringe cavity matches an outer diameter of the seal,
• a nozzle formed at a forward end of barrel through which fluid is drawn into an inner portion of the barrel in response to the seal being drawn away from the nozzle, and
• a barrel flange formed at a rear end of the hollow cylinder body, wherein
• at least one of the nozzle, the plunger, the barrel at a front portion thereof, and barrel flange, and inner plunger arm include a breaking point, the breaking point have a weaker mechanical integrity than surrounding material that breaks in response to an external force of a predetermined amount, wherein
• at least one edge surface of the inner arms includes a series of nubs distributed at predetermined intervals and extending radially outward with respect to a center axis of the syringe, each nub sized to engage the front circular prominence after the plunger, once broken, is inserted through a barrel front opening to prevent the plunger, once broken, from accidental removal from the barrel.

A hand-held aspiration syringe configured for one-handed operation, comprising:

• a plunger having
• a seal at a forward end thereof,
• a push button at a rear end thereof,
• an internal plunger arm attached at a rear end thereof to the rear plunger handle and to the seal at a forward end thereof,
• an external plunger arm attached at a rear end thereof to the rear plunger handle and to a front plunger handle at a forward end thereof, the internal plunger arm being arranged adjacent to the external plunger arm, and
• wherein the front plunger handle extends radially away from the external plunger arm and having two portions separated to each receive a different forefinger of a user,
• a barrel having
• a wall with an inner diameter that defines a hollow syringe cavity matches an outer diameter of the seal,
• a nozzle formed at a forward end of barrel through which fluid is drawn into an inner portion of the barrel in response to the seal being drawn away from the nozzle, and
• a barrel flange formed at a rear end of the hollow cylinder body, wherein
• at least one of the nozzle, the plunger, the barrel at a front portion thereof, and barrel flange, and inner plunger arm include a breaking point, the breaking point have a weaker mechanical integrity than surrounding material that breaks in response to an external force of a predetermined amount, wherein
• at least one edge surface of the external arms includes a series of nubs distributed at predetermined intervals and extending inwardly so as to oppose and contact an outer edge of the barrel flange when moved next to the barrel flange so a movement of each nub against the barrel flange provides tactile feedback to an operator as the external arms are urged along the barrel through a passage.

A hand-held aspiration syringe configured for one-handed operation, comprising:

• a plunger having
• a seal at a forward end thereof,
• a push button at a rear end thereof,
• an internal plunger arm attached at a rear end thereof to the rear plunger handle and to the seal at a forward end thereof,
• an external plunger arm attached at a rear end thereof to the rear plunger handle and to a front plunger handle at a forward end thereof, the internal plunger arm being arranged adjacent to the external plunger arm, and
• wherein the front plunger handle extends radially away from the external plunger arm and having two portions separated to each receive a different forefinger of a user,
• a barrel having
• a wall with an inner diameter that defines a hollow syringe cavity matches an outer diameter of the seal,
• a nozzle formed at a forward end of barrel through which fluid is drawn into an inner portion of the barrel in response to the seal being drawn away from the nozzle, and
• a barrel flange formed at a rear end of the hollow cylinder body, wherein
• at least one of the nozzle, the plunger, the barrel at a front portion thereof, and barrel flange, and inner plunger arm include a breaking point, the breaking point have a weaker mechanical integrity than surrounding material that breaks in response to an external force of a predetermined amount, wherein
• the barrel includes a visual scale providing an visual indication of an amount of fluid in the barrel, the visual scale including one of luminescent or non-luminescent;
• and
• at least one external arm includes a reverse scale that is oriented in an opposite direction as the scale.

A hand-held aspiration syringe configured for one-handed operation, comprising:

• a plunger having
• a seal at a forward end thereof,
• a push button at a rear end thereof,
• an internal plunger arm attached at a rear end thereof to the rear plunger handle and to the seal at a forward end thereof,
• an external plunger arm attached at a rear end thereof to the rear plunger handle and to a front plunger handle at a forward end thereof, the internal plunger arm being arranged adjacent to the external plunger arm, and
• wherein the front plunger handle extends radially away from the external plunger arm and having two portions separated to each receive a different forefinger of a user,
• a barrel having
• a wall with an inner diameter that defines a hollow syringe cavity matches an outer diameter of the seal,
• a nozzle formed at a forward end of barrel through which fluid is drawn into an inner portion of the barrel in response to the seal being drawn away from the nozzle, and
• a barrel flange formed at a rear end of the hollow cylinder body, wherein
• at least one of the nozzle, the plunger, the barrel at a front portion thereof, and barrel flange, and inner plunger arm include a breaking point, the breaking point have a weaker mechanical integrity than surrounding material that breaks in response to an external force of a predetermined amount, wherein
• the plunger includes a seal breaking point that separates a seal holder from the plunger in response to an external pinching force applied to the barrel body rear to the seal holder, and the force being maintained while the plunger is at least partially extracted from the barrel cavity by using the other hand grasping the plunger as aspirating the fluid.

A hand-held aspiration syringe configured for one-handed operation, comprising:

• a plunger having
• a seal at a forward end thereof,
• a push button at a rear end thereof,
• an internal plunger arm attached at a rear end thereof to the rear plunger handle and to the seal at a forward end thereof,
• an external plunger arm attached at a rear end thereof to the rear plunger handle and to a front plunger handle at a forward end thereof, the internal plunger arm being arranged adjacent to the external plunger arm, and
• wherein the front plunger handle extends radially away from the external plunger arm and having two portions separated to each receive a different forefinger of a user,
• a barrel having
• a wall with an inner diameter that defines a hollow syringe cavity matches an outer diameter of the seal,
• a nozzle formed at a forward end of barrel through which fluid is drawn into an inner portion of the barrel in response to the seal being drawn away from the nozzle, and
• a barrel flange formed at a rear end of the hollow cylinder body, wherein
• at least one of the nozzle, the plunger, the barrel at a front portion thereof, and barrel flange, and inner plunger arm include a breaking point, the breaking point have a weaker mechanical integrity than surrounding material that breaks in response to an external force of a predetermined amount, wherein
• the barrel flange comprises polypropylene having a predetermined thickness, the barrel flange includes the breaking point that extends from one side of the barrel flange to the other and the breaking point being less thick than the predetermined thickness.