Nova Patents
IL286808A

Apparatus and methods for ocular injection

Abstract

This record has no abstract on file.

IL286808A, drawing sheet 1
Sheet 1 of 95

Term

No projected expiry on record.

  1. Priority
  2. Filed
  3. Published
  4. Today

65 claims: 10 independent, 55 dependent

  1. 1
    Claims 1. An apparatus, comprising:a housing configured to be coupled to a medicament container, the medicament container configured to be coupled to a needle;and an injection assembly disposed within the housing, the injection assembly including an energy storage member and an actuation rod, a distal end portion of the actuation rod configured to be disposed within the medicament container, the energy storage member configured to produce a force on a proximal end portion of the actuation rod, the force sufficient to move the distal end portion of the actuation rod within the medicament container to convey at least a portion of a substance from the medicament container via the needle when a distal tip of the needle is disposed within a first region of a target location, the force insufficient to move the distal end portion of the actuation rod within the medicament container when the distal tip of the needle is disposed within a second region of the target location.
  2. 5
    The apparatus of claim I, wherein the force is between about 2 N and about 6 N. AMENDED SHEET (ARTICLE 19)
  3. 13
    An apparatus, comprising:a housing configured to receive at least a portion of a medicament container, the medicament container configured to be coupled to a needle;and an injection assembly disposed within the housing, the injection assembly including an energy storage member, an actuation rod and a release member, a distal end portion of the actuation rod configured to be disposed within the medicament container, the release member configured to maintain a position of the actuation rod relative to the housing when the release member is in a first position such that movement of the housing relative to the medicament container moves the distal end portion of the actuation rod within the medicament container, the release member configured to release the actuation rod when moved from the first position to a second position such that a force produced by the energy storage member moves the distal end portion of the actuation rod relative to the housing and within the medicament container to convey at least a portion of a substance from the medicament container via the needle.
  4. 20
    A method, comprising:inserting a distal tip of a needle of a medical injector a first distance into a target tissue, the medical injector including a medicament container and an injection assembly, the medicament container in fluid communication with the needle, the injection assembly including an actuation rod and an energy storage member, the energy storage member configured to produce a force on a proximal end portion, of the actuation rod;releasing the actuation rod of the injection assembly to allow a distal end portion of the actuation rod to move within the medicament container in response to the force;and inserting, after the releasing, the distal tip of the needle of the fnedical injector a second distance into the target tissue if the distal end portion of the actuation rod moves less than a threshold injection distance within the medicament container in response to the force, the second distance greater than the first distance.
  5. 25
    An. apparatus, comprising:a housing configured to receive a portion of a medicament container;and an adjustment member, a proximal end portion of the adjustment member configured to be coupled to the medicament container, a distal end portion of the adjustment member coupled' to a needle, the adjustment member movably disposed within the housing such that when tiie adjustment member is rotated relative to the housing, the needle is moved through a plurality of discrete increments along a longitudinal axis of the housing.
  6. 35
    An apparatus, comprising:a housing configured to receive a portion of a medicament container;and an adjustment member, a proximal end portion of the adjustment member configured to be coupled to the medicament container, a distal end portion of the adjustment member coupled to a needle, the adjustment member defining a plurality of detents, a protrusion of the housing configured to be removably disposed within each detent from the plurality of detents when the adjustment member is moved relative to the housing to move the needle relative to the housing through a plurality of discrete increments. AMENDED SHEET (ARTICLE 19) WO 2014/179698־
  7. 40
    41. An apparatus, comprising:a hub configured to be coupled to a medical injector, the hub defining a passageway configured to receive a needle therethrough, the hub having a convex distal end surface, the distal end surface configured to contact a target surface of a target tissue when a substance is conveyed through the needle into the target tissue. AMENDED SHEET (ARTICLE 19) WO 2014/179698 . ״ητ no ™ J
  8. 41
    42. The apparatus of claim 41, wherein the distal. end surface includes a sealing portion configured to define a substantially fluid-tight seal with the target surface when the distal end surface is in contact with the target surface,
  9. 48
    49. A method, comprising:inserting a distal end portion of a needle of a medical injector into a target tissue to define a delivery passageway within the target tissue;placing a convex distal end surface of a hub of the medical injector into contact with a target surface of the target tissue to fluidically isolate the delivery passageway;and conveying, after the placing, a substance into the target tissue via the needle. AMENDED SHEET (ARTICLE 19)
  10. 49
    50. The method of claim 49, wherein:the inserting is performed such that a centerline of the delivery passageway and a surface line tangent to the target surface defines an angle of entry of between about 75 degrees and about 105 degrees.
  11. 52
    53. The method of claim 52, wherein:the delivery passage way extends through a sclera of the eye;and the conveying includes conveying the substance into at least one of a .suprachoroidal space or a lower portion of the sclera.
  12. 57
    58. A method, comprising:inserting a distal end portion of a needle of a medical injector into a target tissue to define a delivery passageway within the target tissue, the inserting is performed such that a centerline of the needle is substantially normal to a target surface of the target tissue;placing a distal end surface of a hub of the medical injector into contact with a target surface of the target tissue to fluidically isolate the delivery passageway;and conveying, after the placing, a substance into the target tissue via the needle.
  13. 58
    59. The method of claim 58, wherein:the inserting is performed such that a centerline of the delivery passageway and a surface line tangent to the target surface defines an angle of entry of between about 75 degrees and about 105 degrees.
  14. 61
    62. The method of claim 61, wherein:the delivery passage way extends through a sclera of the eye;and the conveying includes conveying the substance into at least one of a suprachoroidal space or a lower portion of the sclera.
  15. 64
    65. A method, comprising:inserting a distal end portion of a puncture member of a medical injector into a target tissue to define a delivery passageway within the target tissue and such that distal end surface of a hub of the medical injector is in contact with a target surface of the target tissue;exerting a force on an actuation rod of the medical injector when the distal end surface of the hub is in contact with the target surface, the force having magnitude of less than a threshold value, the medical injector configured such that the force is sufficient to move a distal end portion of the actuation rod within a medicament container when the distal end portion of the puncture member is disposed within a first region of the target tissue, the medical injector configured such that the force is insufficient to move the distal end portion of the actuation rod within the medicament container when the distal end portion of the puncture member is disposed within a second region of the target tissue;and conveying, in response to the exerting, a substance from the medicament container into the target tissue via the puncture member when the distal end portion of the puncture member is disposed within the first region of the target tissue.
  16. 65
    66. The method of claim 65, wherein the threshold value is about 6N> the target tissue is an eye, the target surface is any one of a conjunctiva of the eye or a sclera of the eye.