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CN-121985973-A - Syringe accessory

CN121985973ACN 121985973 ACN121985973 ACN 121985973ACN-121985973-A

Abstract

Provided herein are syringe accessories and methods of using same with syringes for injection. The syringe accessory described herein may include a single unitary housing including a tubular portion configured to receive a barrel of a syringe, one or more flanges at a proximal end of the tubular portion, and a base portion at a distal end of the tubular portion. The base portion may extend outwardly in at least one direction from an outer surface of the tubular portion towards an end of the base portion, the end of the base portion being configured to provide a stable contact surface on the injection site. The one or more flanges of the housing may be larger than the one or more flanges of the syringe inserted into the housing. The housing may be configured to limit protrusion of the needle when the syringe barrel is received in the tubular portion of the housing.

Inventors

  • TOOLE KYLE
  • B. H. Hutton
  • JONES RUSSELL K.
  • J. D. McCluskey

Assignees

  • 詹森生物科技公司

Dates

Publication Date
20260505
Application Date
20240805
Priority Date
20230807

Claims (20)

  1. 1. A syringe accessory comprising: a single unitary housing comprising: A tubular portion configured to receive a barrel of a syringe; one or more flanges at a proximal end of the tubular portion, and A base portion at a distal end of the tubular portion, the base portion extending outwardly in at least one direction from an outer surface of the tubular portion toward an end of the base portion, the end of the base portion configured to provide a stable contact surface on an injection site, Wherein the single unitary housing is configured to limit protrusion of a needle of a syringe when the barrel of the syringe is received in the tubular portion.
  2. 2. The syringe accessory according to claim 1, wherein the base portion has a cross-sectional dimension that is larger than a cross-sectional dimension of the tubular portion.
  3. 3. The syringe accessory of claim 1 or 2, wherein the base portion is configured to raise a skin portion within a perimeter of the base portion at the injection site when the base portion contacts the injection site.
  4. 4. The syringe accessory of any of claims 1-3, wherein the single unitary housing is configured to provide an injection angle of between 85 degrees and 95 degrees relative to the contact surface.
  5. 5. The syringe accessory of any of claims 1-4, wherein the single unitary housing comprises one or more latches disposed at the proximal end of the tubular portion and configured to grip the syringe barrel when the syringe barrel is advanced distally past the one or more latches to prevent retraction of the syringe from the single unitary housing.
  6. 6. The syringe accessory according to any of claims 1-5, wherein the syringe accessory is the single unitary housing.
  7. 7. The syringe accessory of any one of claims 1-6, wherein the tubular portion includes a constriction along a length of the tubular portion between a proximal portion and a distal portion of the tubular portion, the constriction configured to limit the protrusion of the needle from the distal portion when the barrel of the syringe is received in the proximal portion of the tubular portion.
  8. 8. The syringe accessory of any of claims 1-7, wherein the one or more flanges at the proximal end of the tubular portion are larger than one or more flanges of the syringe.
  9. 9. A syringe assembly comprising: The syringe accessory according to any one of claims 1 to 8, and A syringe.
  10. 10. The syringe assembly of claim 9, wherein the syringe is a pre-filled syringe comprising an Active Pharmaceutical Ingredient (API).
  11. 11. A method of assembling a syringe and syringe accessory, comprising: inserting a barrel of the syringe into a proximal end of a tubular portion of the syringe accessory, and Advancing the barrel toward the distal end of the tubular portion until the one or more flanges of the syringe clip onto one or more latches on the inner surface of the syringe accessory, Wherein the syringe accessory comprises a single unitary housing comprising the tubular portion, one or more flanges at the proximal end of the tubular portion, and a base portion at the distal end of the tubular portion that extends outwardly from an outer surface of the tubular portion in at least one direction toward an end of the base portion to provide a stable contact surface at an injection site.
  12. 12. The method of claim 11, wherein the one or more latches are disposed at the proximal end of the tubular portion of the single unitary housing such that the one or more latches prevent retraction of the syringe from the syringe accessory when the syringe barrel is advanced distally past the one or more latches.
  13. 13. The method of claim 11 or 12, wherein the tubular portion includes a constriction along a length of the tubular portion between a proximal portion and a distal portion of the tubular portion to limit protrusion of a needle from the distal portion when the barrel of the syringe is inserted into the proximal portion of the tubular portion.
  14. 14. A syringe, comprising: a plunger including a plunger stop at a distal end of the plunger and a plunger rod extending from the plunger stop, and A single unitary housing comprising: A barrel configured to receive the plunger rod; one or more flanges at a proximal end of the barrel, and A base portion at a distal end of the barrel, the base portion extending outwardly in at least one direction from an outer surface of the barrel toward an end of the base portion, the end of the base portion configured to provide a stable contact surface on an injection site, Wherein the single unitary housing is configured to limit protrusion of a needle when coupled to the distal end of the barrel.
  15. 15. The injector of claim 14, wherein the base portion is configured to raise a skin portion within a perimeter of the base portion at the injection site when the base portion contacts the injection site.
  16. 16. The injector of claim 14 or 15, wherein the single unitary housing is configured to provide an injection angle of between 85 degrees and 95 degrees relative to the contact surface.
  17. 17. The syringe of any of claims 14-16, wherein the syringe consists of the plunger and the single unitary housing.
  18. 18. The syringe of any of claims 14-17, wherein the syringe is a pre-filled syringe comprising an Active Pharmaceutical Ingredient (API).
  19. 19. The syringe accessory of any one of claims 1-8, comprising a locking member disposed at the proximal end of the tubular portion and configured to retain the syringe within the tubular portion.
  20. 20. The syringe accessory of any of claims 1-8, wherein the tubular portion comprises an opening extending a length of the tubular portion and configured to receive the syringe, and the syringe accessory comprises one or more retaining members disposed at a proximal end of the opening and configured to retain the syringe within the tubular portion.

Description

Syringe accessory Cross Reference to Related Applications The present application claims priority and benefit from U.S. provisional patent application No. 63/518,097, the contents of which are incorporated herein in their entirety. Technical Field The present disclosure relates generally to syringe accessories and, more particularly, to syringe accessories including a single unitary body and methods of using syringe accessories with syringes for injection. Background Various devices and methods are used to deliver drugs, such as Active Pharmaceutical Ingredients (APIs), to a patient. For example, the API may be injected, orally ingested/consumed, or inhaled using a syringe or an auto injector. The syringe may be used to deliver the API in fluid form directly to the intended injection site (e.g., blood flow) with maximum efficacy. Furthermore, different APIs require injection through the skin at different depths to achieve maximum efficacy, such as intravenous, intramuscular, subcutaneous, intradermal, etc. In some cases, different APIs may also need to be injected at a particular angle, e.g., if the intended site is subcutaneous injection, intramuscular injection is avoided. There are several types of syringes of varying complexity. For example, the syringe may be prefilled, may include needle safety features, may vary in the number of components (e.g., barrel, plunger rod, needle, and optional plunger stopper), and so forth. In clinical studies, conventional manual syringes are commonly used for manual injection of drugs. Disclosure of Invention Described herein are syringe accessories and methods of using syringe accessories with syringes for injection. The syringe accessory may be attached to the syringe or embodied in the syringe device itself to limit the injection depth of the syringe, provide stable contact with the skin surface, and improve ergonomics of the syringe use. The syringe accessory may include a single unitary housing including a tubular portion, one or more flanges at a proximal end of the tubular portion, and a base portion at a distal portion. When a syringe is inserted into the syringe accessory described herein, the protrusion of the needle from the base of the syringe accessory may be limited to a desired injection depth. The base portion may provide a stable contact angle for injection on the skin of a user. The use of the syringe may be improved and simplified due to the provision of a larger flange at the end of the syringe accessory described herein. As noted above, it is most common (e.g., at least in clinical studies) to manually inject APIs using low cost conventional manual syringes. Despite the simplicity of design and function of conventional syringes, there is a high probability of user error. For example, without extensive experience, it may be difficult to determine the proper injection depth and/or injection angle for a particular type of injection using conventional injectors. Incorrect injections require repeated attempts to achieve the correct injections, which can lead to patient injury or pain, waste of material (e.g., not only the syringe, but also the syringe contents (API) and syringe packaging), and increased patient care time. Furthermore, during use of the injector in clinical trials, variations in injection angle, injection depth, and/or skin contact effects may lead to inaccurate results. Finally, conventional manual syringes may have minimal ergonomic features, which in turn make it difficult for a user to easily use the syringe. Existing syringes and/or syringe attachments (e.g., accessories) have attempted to address one or more of these issues, however, in addition to failing to fully address each of the above-described drawbacks of syringes, existing syringes and/or syringe attachments typically include multiple components and are compatible with only one or a limited number of syringe types. Accordingly, there remains a gap in the art of devices such as syringes or syringe accessories to address all of these problems in a more compact and simple manner. The syringe accessory provided herein may be used to alleviate difficulties associated with syringes, whether it be conventional manual syringes described herein, more complex variations thereof, or syringe accessories that attempt to address one or more of the above problems. The syringe accessories described herein may include a single unitary housing into which a syringe may be easily inserted for injection. The single unitary housing may include one or more flanges at the distal end of the tubular portion of the housing that improve ergonomics and ease of use for the user. The housing may further include a base portion extending outwardly from the tubular portion of the housing in at least one direction to provide a stable contact surface on the injection site. Finally, when inserted into a single unitary housing, the protrusion of the needle from the syringe may be limited, thereby providing a co