Claims for Patent: 10,842,938

Summary for Patent: 10,842,938

Title:	Medicament delivery device and methods for delivering drugs to infants and children
Abstract:	A method of delivering epinephrine includes placing a distal end surface of a medical injector into contact with a target location of a patient. The medical injector includes a housing, an energy storage member, and a medicament container containing a dose of epinephrine effective for administration to the patient experiencing anaphylaxis and having a weight of less than 15 kg. The medicament container is coupled to a needle. The medical injector is actuated such that the energy storage member produces a force to move the needle from a first needle position to a second needle position. A distal tip of the needle extends from the distal end surface by a distance of between 7 millimeters and 8 millimeters when the needle is in the second needle position. A portion of the force is exerted to expel the dose of epinephrine when the needle is in the second position.
Inventor(s):	Edwards; Eric S. (Moseley, VA), Edwards; Evan T. (Charlottesville, VA), Kelley; Glen L. (Glen Allen, VA), Meyers; Paul F. (Fishers, IN)
Assignee:	kaleo, Inc. (Richmond, VA)
Application Number:	16/162,552
Patent Claims:	1. A method, comprising: placing a distal end surface of a medical injector into contact with a target location of a patient, the medical injector including a housing, an energy storage member and a medicament container containing a dose of epinephrine effective for administration to the patient experiencing anaphylaxis, the medicament container coupled to a needle via a carrier, the carrier configured to retain a distal end portion of the medicament container within a coupling volume, a retention portion of the carrier configured to retain the distal end portion of the medicament container in a first container position within the coupling volume, the distal end portion of the medicament container fluidically isolated from a proximal tip of the needle when the medicament container is in the first container position, the distal end portion of the medicament container configured to move to a second container position within the coupling volume in response to an actuation force, the distal end portion of the medicament container fluidically coupled to the proximal tip of the needle when the medicament container is in the second container position, the retention portion including an annular protrusion defining a bleed passageway from the coupling volume towards a proximal end portion of the carrier; and actuating the medical injector after the placing such that the energy storage member produces the actuation force to move the medicament container from the first container position to the second container position, a portion of the actuation force is exerted to expel the dose of epinephrine from the medicament container when the medicament container is in the second container position. 2. The method of claim 1, wherein the dose of epinephrine contains between about 0.06 mg epinephrine and about 0.150 mg epinephrine. 3. The method of claim 1, wherein the dose of epinephrine contains about 0.1 mg epinephrine. 4. The method of claim 1, wherein the dose of epinephrine includes about 0.1 ml of a solution containing about 0.1 mg epinephrine, about 0.78 mg sodium chloride, and about 0.15 mg sodium bisulfate hydrochloric acid. 5. The method of claim 1, wherein the patient has a weight range of between 7.5 kg and 15 kg. 6. The method of claim 1, wherein the placing includes placing the distal end surface into direct contact with a clothing article covering the target location. 7. The method of claim 1, wherein: the distal end surface is a distal end surface of an actuator; and the actuating includes pressing the actuator against the target location such that the actuator moves relative to the housing to release an energy from the energy storage member. 8. The method of claim 7, wherein the actuating includes pressing the actuator against the target location with an actuator release force between about 8.9 N (2 lbf) and about 44.5 N (10 lbf). 9. The method of claim 1, wherein the actuating the medical injector further causes the needle to move from a first needle position to a second needle position, the dose of epinephrine being expelled from the medicament container when the needle is in the second needle position. 10. The method of claim 9, wherein: the target location is a thigh; and the actuation force is such that a distal tip of the needle is within a thigh muscle when the needle is in the second needle position to expel the dose of epinephrine intramuscularly into the thigh muscle. 11. An apparatus, comprising: a housing; a contact surface coupled to the housing, the contact surface configured to contact a target location of a patient; a medicament container at least partially disposed within the housing, the medicament container containing a dose of epinephrine effective for administration to the patient experiencing anaphylaxis, the medicament container coupled to a needle via a carrier, the carrier configured to retain a distal end portion of the medicament container within a coupling volume, a retention portion of the carrier configured to retain the distal end portion of the medicament container in a first container position within the coupling volume, the distal end portion of the medicament container fluidically isolated from a proximal tip of the needle when the medicament container is in the first container position, the distal end portion of the medicament container configured to move to a second container position within the coupling volume in response to an actuation force, the distal end portion of the medicament container fluidically coupled to the proximal tip of the needle when the medicament container is in the second container position, the retention portion including an annular protrusion defining a bleed passageway from the coupling volume towards a proximal end portion of the carrier; an energy storage member within the housing, the energy storage member configured to produce the actuation force to move the medicament container from the first container position to the second container position; and an actuator configured to actuate the energy storage member to release the actuation force. 12. The apparatus of claim 11, wherein: the contact surface and the actuator are monolithically constructed; and the actuator is coupled to a distal end portion of the housing, the actuator configured to move relative to the housing to actuate the energy storage member. 13. The apparatus of claim 12, wherein the actuator includes a detent protrusion configured to matingly engage a detent recess of the distal end portion of the housing, the detent protrusion of the actuator and the detent recess of the housing configured such that the actuator moves relative to the housing when an actuator release force is applied to the contact surface. 14. The apparatus of claim 12, wherein the contact surface is planar. 15. The apparatus of claim 11, wherein: the patient has a weight range of between 7.5 kg and 15 kg; the medicament container includes at least 0.3 ml of a solution containing about 0.3 mg epinephrine; and a portion of the actuation force is exerted to move a plunger within the medicament container by a plunger distance to expel the dose of epinephrine when the needle is in the second needle position, the dose of epinephrine being between about 0.06 ml and about 0.150 ml of the solution. 16. The apparatus of claim 15, wherein: the dose of epinephrine has a nominal value of 0.10 ml of the solution. 17. The apparatus of claim 11, wherein the annular protrusion includes a plurality of bleed passageways disposed circumferentially around the retention portion, the bleed passageway being one of the plurality of bleed passageways. 18. An apparatus, comprising: a housing; a medicament container at least partially disposed within the housing, the medicament container containing a dose of a medicament for administration to a patient; a carrier having a distal end portion coupled to a needle, the distal end portion including a side wall defining a coupling volume within which a distal end portion of the medicament container is movably coupled, the medicament container fluidically isolated from a proximal tip of the needle when distal end portion of the medicament container is in a first container position within the coupling volume, the medicament container fluidically coupled to the proximal tip of the needle when the distal end portion of the medicament container is in a second container position within the coupling volume, the side wall including an annular protrusion defining a bleed passageway from the coupling volume towards a proximal end portion of the carrier; and an energy storage member within the housing, the energy storage member configured to produce a force to move the medicament container from the first container position to the second container position, a portion of the force exerted to move a plunger within the medicament container to expel the dose of the medicament when the medicament container is in the second container position. 19. The apparatus of claim 18, wherein the annular protrusion includes a plurality of bleed passageways disposed circumferentially around the side wall, the bleed passageway being one of the plurality of bleed passageways. 20. The apparatus of claim 18, wherein the energy storage member is any one of a spring, a compressed gas container, or a propellant container. 21. The apparatus of claim 18, wherein the dose of a medicament includes a dose of epinephrine. 22. The apparatus of claim 18, wherein the needle is configured to move from a first needle position within the housing to a second needle position extending at least partially outside of the housing. 23. The apparatus of claim 18, wherein: the patient has a weight range of between 7.5 kg and 15 kg; and the dose of the medicament includes at least 0.3 ml of a solution containing about 0.3 mg epinephrine.