Adjustable depth injection needle and injection pen structure

Abstract

The present disclosure relates to an adjustable-depth injection needle, comprising: a needle seat, a needle tube being connected to the needle seat, one end of the needle seat being used for connecting with an injection pen; and a gear adjusting member, the gear adjusting member being located at the other end of the needle seat, a needle tip of the needle tube being adapted to pass through a front end surface of the gear adjusting member adapted to contact with the skin, the gear adjusting member being sleeved with the needle seat and adapted to rotate relative to the needle seat; wherein: one of the needle seat and the gear adjusting member is provided with a first matching part, the other of the needle seat and the gear adjusting member is provided with a plurality of second matching parts in a circumferential direction, the first matching part and the second matching parts in different circumferential positions axially abutting and matching in different axial positions to define different penetration depths of the needle tip. The present disclosure also relates to an injection pen structure.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of medical devices, and more particularly to an adjustable-depth injection needle and an injection pen structure having the injection needle. Background Technology

[0002] Injection pen needles are widely used as a tool, and their main function is to inject drugs into patients to achieve the purpose of treatment.

[0003] Currently, the most common injection needles used with injection pens consist of a large sheath, a small sheath, a needle hub, a syringe needle, and dialysis paper. Needle lengths are available in 4mm, 5mm, 6mm, and 8mm, and users purchase different lengths according to their needs. If different lengths are required, users must either purchase them separately or prepare multiple lengths at once. Summary of the Invention

[0004] This disclosure is made to alleviate or resolve at least one aspect or point of the above-mentioned problems.

[0005] Embodiments of this disclosure provide an adjustable-depth injection needle, comprising:

[0006] Needle hub, on which a needle tube is connected, one end of which is used to connect to an injection pen; and

[0007] A gear adjustment component is located at the other end of the needle holder, the needle tip of the needle tube is adapted to pass through the front end face of the gear adjustment component adapted to contact the skin, and the gear adjustment component is sleeved with the needle holder and adapted to rotate relative to the needle holder.

[0008] in:

[0009] One of the needle holder and the gear adjustment component is provided with a first mating part, and the other of the needle holder and the gear adjustment component is provided with a plurality of second mating parts spaced apart in the circumferential direction. The first mating part and the second mating parts at different positions in the circumferential direction axially abut against each other at different positions in the axial direction to limit the different insertion depths of the needle tip.

[0010] Embodiments of this disclosure also relate to an injection pen structure, including an injection pen; and the aforementioned adjustable-depth injection needle.

[0011] The injection needle disclosed herein has a length adjustment function, so one product can meet the needs of different users, and the adjustment and use are convenient and quick. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an adjustable-depth injection needle for an injection pen according to an exemplary embodiment of the present disclosure;

[0013] Figure 2 and Figure 3 These are three-dimensional schematic diagrams of the needle holder of an adjustable-depth injection needle for an injection pen according to an exemplary embodiment of the present disclosure, viewed from different perspectives.

[0014] Figure 4 and Figure 5 These are perspective views of an adjustable depth injection needle for an injection pen, according to an exemplary embodiment of the present disclosure, viewed from different angles.

[0015] In the picture:

[0016] 1. Needle hub;

[0017] 101. Boss structure; 102. Rib structure; 103. Blocking part; 104. Pin seat hole; 105. Thread;

[0018] 2. Gear adjustment mechanism;

[0019] 201. Annular hole; 202. Gear position indicator structure; 203. Groove structure; 204. Groove rib; 205. Blocking mating part; 206. Abutting end face; 207. Front end face of gear position adjusting part;

[0020] 3. Syringe. Detailed Implementation

[0021] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this disclosure.

[0022] Referring to the accompanying drawings, this disclosure proposes an adjustable-depth injection needle, comprising:

[0023] Needle hub 1, on which a needle tube 3 is connected, one end of the needle hub 1 is used to connect to an injection pen (not shown); and

[0024] A gear adjustment component 2 is located at the other end of the needle holder 1. The needle tip of the needle tube 3 is adapted to pass through the front end face 207 of the gear adjustment component 2, which is adapted to contact the skin. The gear adjustment component 2 is sleeved with the needle holder 1 and is adapted to rotate relative to the needle holder 1.

[0025] in:

[0026] One of the needle holder 2 and the gear adjustment component 2 is provided with a first mating part, and the other of the needle holder 1 and the gear adjustment component 2 is provided with a plurality of second mating parts at intervals in the circumferential direction. The first mating part and the second mating parts at different positions in the circumferential direction axially abut against each other at different positions in the axial direction to limit the different piercing depths of the needle tip.

[0027] The following reference Figures 1-5 The above technical solution is illustrated by example.

[0028] Figures 1-5 An insulin needle with adjustable injection depth is shown, including a needle hub 1, in which a needle tube 3 is connected by an adhesive within a needle hub hole 104, and the tail of the needle hub 1 has threads 105 for connecting an insulin pen.

[0029] The needle holder 1 is equipped with a gear adjustment component 2. The outer surface of the needle holder 1 is provided with a rib structure 102, and the gear adjustment component 2 is provided with a groove structure 203. The needle holder 1 and the gear adjustment component 2 achieve a relative positional relationship in the axial direction through the cooperation of the rib structure 102 and the groove structure 203, thereby adjusting the length of the needle tube 3 protruding from the front end face 203 of the gear adjustment component. The needle tip of the needle tube 3 protrudes from the annular hole 201 of the gear adjustment component.

[0030] Before use, the positions of each component are as follows: Figure 1 As shown. The gear adjustment component 2 is mounted on the boss structure 101 of the needle holder 1. For example, the raised blocking part 103 engages with the blocking mating part 205, such as an annular rib or annular step, so that the gear adjustment component 2 will not fall off the boss structure 101 of the needle holder. The above-mentioned engagement between the boss structure 101 and the blocking mating part 205 may also be absent. For example, the outer wall of the boss structure and the inner wall of the gear adjustment component are kept relatively stable by friction.

[0031] The gear adjustment component 2 is provided with multiple groove structures 203, and the abutment end faces 206 of the multiple groove structures 203 are all located at different axial positions. Optionally, the gear indicator structure 202 corresponds to the groove structure 202 and is used to indicate different gears.

[0032] Before use, rotate the gear adjustment component 2 as needed to align one of the groove structures 203 with the rib structure 102 of the needle seat; during the rotation of the gear adjustment component 2, the groove ribs 204 between the groove structures cross the rib structure 102 of the needle seat, which can generate a gear feel.

[0033] like Figure 5As shown, the second mating part is a plurality of axially extending groove structures provided on the inner wall surface of the gear adjustment member, and the first mating part is an axially extending rib structure provided on the outer wall surface of the boss structure, which is suitable for moving along the groove structure. One end face of the rib structure is suitable for axially abutting the abutting end face of the groove structure. When the rib structure does not enter the groove structure, the axial distance between the protrusion and the rib structure allows the protrusion to move circumferentially along the annular rib or annular step.

[0034] In use, the product is aligned with the skin and inserted. The needle tip of the needle 3 pierces the skin, and then the front face 207 of the adjustment mechanism contacts the skin. Under external force, the adjustment mechanism 2 undergoes axial displacement relative to the needle seat 1 until the rib structure 102 of the needle seat contacts or abuts against the bottom surface 206 of the groove structure 203 of the adjustment mechanism. At this point, the depth of the needle tip piercing the skin at this location is fixed. Therefore, selecting different depths of the groove structure 203 will result in different depths of needle tip penetration into the skin.

[0035] As shown in the attached figures, the boss structure 101 is a near-cylindrical structure with a reduced radial dimension relative to one end of the needle holder 1. The gear adjustment member 2 is sleeved on the boss structure 101. A radially outward, for example, protruding blocking portion 103 is provided on the outer wall of the boss structure 101 near the needle outlet end; a blocking engagement portion, for example, an annular rib or annular step, is provided on the inner wall of the gear adjustment member 2; the protrusion is adapted to engage with the annular rib or annular step in a direction toward the needle outlet, passing over the annular rib or annular step, and in a manner away from the needle outlet.

[0036] In the above embodiment, the rib structure and the groove structure are matched. However, it can also be the protrusion and the groove structure matched, that is, the protrusion that moves along the groove structure is adapted to abut against the abutting end face of the groove structure in the axial direction.

[0037] In the above embodiments, the outer wall of the boss structure of the needle seat is provided with a rib structure and the inner wall of the gear adjustment component is provided with multiple groove structures to adjust the different piercing depths of the needle tip, but this disclosure is not limited thereto.

[0038] In this disclosure, as long as "one of the needle holder and the gear adjustment component is provided with a first mating part, and the other of the needle holder and the gear adjustment component is provided with a plurality of second mating parts at intervals in the circumferential direction, and the first mating part and the second mating parts at different positions in the circumferential direction axially abut against each other at different positions in the axial direction to limit the different insertion depths of the needle tip", they are all within the protection scope of this disclosure.

[0039] In addition to the embodiments described above, other connection methods can be used for the engagement of the gear shifting member and the needle holder. For example, although not shown, the other end of the needle holder is adapted to accommodate one end of the gear shifting member, the other end of the needle holder is sleeved on one end of the gear shifting member, and one end of the gear shifting member is adapted to rotate relative to the other end of the needle holder; one of the outer surface of one end of the gear shifting member and the inner surface of the other end of the needle holder is provided with the first mating portion, and the other of the outer surface of one end of the gear shifting member and the inner surface of the other end of the needle holder is provided with the plurality of second mating portions spaced apart in the circumferential direction.

[0040] Furthermore, in the illustrated embodiment, the boss structure may not be provided, as long as "the gear adjustment member is sleeved on the other end of the needle seat and is adapted to rotate relative to the needle seat; one of the inner surface of one end of the gear adjustment member and the outer surface of the other end of the needle seat is provided with the first mating part, and the other of the inner surface of one end of the gear adjustment member and the outer surface of the other end of the needle seat is provided with the plurality of second mating parts at intervals in the circumferential direction".

[0041] Based on the above, this disclosure proposes the following technical solution:

[0042] 1. An adjustable-depth injection needle, comprising:

[0043] Needle hub, on which a needle tube is connected, one end of which is used to connect to an injection pen; and

[0044] A gear adjustment component is located at the other end of the needle holder, the needle tip of the needle tube is adapted to pass through the front end face of the gear adjustment component adapted to contact the skin, and the gear adjustment component is sleeved with the needle holder and adapted to rotate relative to the needle holder.

[0045] in:

[0046] One of the needle holder and the gear adjustment component is provided with a first mating part, and the other of the needle holder and the gear adjustment component is provided with a plurality of second mating parts spaced apart in the circumferential direction. The first mating part and the second mating parts at different positions in the circumferential direction axially abut against each other at different positions in the axial direction to limit the different insertion depths of the needle tip.

[0047] 2. The adjustable-depth injection needle according to 1, wherein:

[0048] The other end of the needle holder is adapted to accommodate one end of the gear adjustment member, and the other end of the needle holder is sleeved on one end of the gear adjustment member, and one end of the gear adjustment member is adapted to rotate relative to the other end of the needle holder.

[0049] The first mating part is provided on one of the outer surface of one end of the gear adjustment component and the inner surface of the other end of the needle seat, and the plurality of second mating parts are provided at intervals in the circumferential direction on the other surface of the outer surface of one end of the gear adjustment component and the inner surface of the other end of the needle seat.

[0050] 3. The adjustable-depth injection needle according to 1, wherein:

[0051] The gear adjustment component is sleeved on the other end of the needle holder and is adapted to rotate relative to the needle holder;

[0052] The first mating part is provided on one of the inner surface of one end of the gear adjustment component and the outer surface of the other end of the needle seat, and the plurality of second mating parts are provided at intervals in the circumferential direction on the other surface of the inner surface of one end of the gear adjustment component and the outer surface of the other end of the needle seat.

[0053] 4. The adjustable-depth injection needle according to 3, wherein:

[0054] The other end of the needle seat has an axially outwardly extending boss structure, and the gear adjustment component is sleeved on the boss structure and is adapted to rotate relative to the boss structure.

[0055] The first mating part is provided on one of the outer surface of the boss structure and the inner surface of the gear adjustment component, and the other surface of the outer surface of the boss structure and the inner surface of the gear adjustment component is provided with the plurality of second mating parts at intervals in the circumferential direction.

[0056] 5. The adjustable-depth injection needle according to 4, wherein:

[0057] The boss structure is a near-cylindrical structure with a reduced radial dimension relative to one end of the pin seat.

[0058] 6. The adjustable-depth injection needle according to claim 5, wherein:

[0059] The gear adjustment component is sleeved on the boss structure, and the inner wall surface of the gear adjustment component is in friction fit or interference fit with the outer wall surface of the boss structure.

[0060] 7. The adjustable-depth injection needle according to claim 5, wherein:

[0061] The outer wall of the boss structure near the needle outlet has a radially outward protrusion.

[0062] The inner wall of the gear adjustment component is provided with annular ribs or annular steps;

[0063] The protrusion is adapted to engage with the annular rib or annular step in a direction toward the needle outlet and in a manner away from the needle outlet.

[0064] 8. An adjustable-depth injection needle according to any one of 1-7, wherein:

[0065] One of the first and second mating parts is an axially extending groove structure, and the other is an axially extending rib structure adapted to move along the groove structure, wherein one end face of the rib structure is adapted to abut against the abutting end face of the groove structure in the axial direction; or

[0066] One of the first mating part and the second mating part is an axially extending groove structure, and the other mating part is a protrusion adapted to move along the groove structure. The protrusion is adapted to abut against the abutting end face of the groove structure in the axial direction.

[0067] 9. The adjustable-depth injection needle according to 8, wherein:

[0068] The groove structure has different axial extension lengths; and

[0069] Based on the relative rotation between the gear adjustment component and the needle seat, the rib structure or the protrusion is adapted to enter different groove structures.

[0070] 10. The adjustable-depth injection needle according to claim 9, wherein:

[0071] The groove structure consists of multiple grooves of different axial lengths that are provided on the gear adjustment component and extend axially from one end of the gear adjustment component away from the needle outlet to the other end.

[0072] Rotating the gear adjustment component allows the rib structure to be adapted to enter different groove structures, or the protrusion to enter different groove structures.

[0073] 11. The adjustable-depth injection needle according to 10, wherein:

[0074] Adjacent groove structures are provided with axially extending groove ribs in the circumferential direction. When the gear adjustment component is rotated, the ribs or protrusions are adapted to cross the groove ribs in the circumferential direction and enter the corresponding groove structure, and the crossing generates a gear shifting feel.

[0075] 12. The adjustable-depth injection needle according to 10, wherein:

[0076] The outer wall of the gear adjustment component is provided with multiple gear indicator structures at positions corresponding to multiple slot structures.

[0077] 13. The adjustable-depth injection needle according to 7, wherein:

[0078] The second mating part is a plurality of axially extending groove structures provided on the inner wall surface of the gear adjustment member, and the first mating part is an axially extending rib structure provided on the outer wall surface of the boss structure, which is suitable for moving along the groove structure. One end face of the rib structure is suitable for axially abutting the abutting end face of the groove structure.

[0079] When the rib structure does not enter the groove structure, the axial distance between the protrusion and the rib structure allows the protrusion to move circumferentially along the annular rib or annular step.

[0080] 14. An adjustable-depth injection needle according to any one of 1-13, wherein:

[0081] The first mating part and the second mating part at different positions in the circumferential direction abut their abutting surfaces at different positions in the axial direction. The abutting surfaces are defined by the end face of the groove structure or the side wall surface of the rib or protrusion. The rib or protrusion abuts and engages with the abutting surfaces.

[0082] 15. An injection pen structure, comprising:

[0083] Injection pen; and

[0084] An adjustable depth injection needle according to any one of 1-14.

[0085] 16. The injection pen structure according to 15, wherein:

[0086] The injection pen is an insulin injection pen.

[0087] It should be noted that the above technical solutions can be combined arbitrarily where logically possible, and all are within the scope of protection of this disclosure. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0089] Although embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that variations and combinations of elements may be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable-depth injection needle, comprising: A needle hub, on which a needle tube is connected, and one end of the needle hub is used to connect to an injection pen; as well as A gear adjustment component is located at the other end of the needle holder, the needle tip of the needle tube is adapted to pass through the front end face of the gear adjustment component adapted to contact the skin, and the gear adjustment component is sleeved with the needle holder and adapted to rotate relative to the needle holder. in: One of the needle holder and the gear adjustment component is provided with a first mating part, and the other of the needle holder and the gear adjustment component is provided with a plurality of second mating parts spaced apart in the circumferential direction. The first mating part and the second mating parts at different positions in the circumferential direction axially abut against each other at different positions in the axial direction to limit the different insertion depths of the needle tip.

2. The adjustable depth injection needle according to claim 1, wherein: The other end of the needle holder is adapted to accommodate one end of the gear adjustment member, and the other end of the needle holder is sleeved on one end of the gear adjustment member, and one end of the gear adjustment member is adapted to rotate relative to the other end of the needle holder. The first mating part is provided on one of the outer surface of one end of the gear adjustment component and the inner surface of the other end of the needle seat, and the plurality of second mating parts are provided at intervals in the circumferential direction on the other surface of the outer surface of one end of the gear adjustment component and the inner surface of the other end of the needle seat.

3. The adjustable depth injection needle according to claim 1, wherein: The gear adjustment component is sleeved on the other end of the needle holder and is adapted to rotate relative to the needle holder; The first mating part is provided on one of the inner surface of one end of the gear adjustment component and the outer surface of the other end of the needle seat, and the plurality of second mating parts are provided at intervals in the circumferential direction on the other surface of the inner surface of one end of the gear adjustment component and the outer surface of the other end of the needle seat.

4. The adjustable depth injection needle according to claim 3, wherein: The other end of the needle seat has an axially outwardly extending boss structure, and the gear adjustment component is sleeved on the boss structure and is adapted to rotate relative to the boss structure. The first mating part is provided on one of the outer surface of the boss structure and the inner surface of the gear adjustment component, and the other surface of the outer surface of the boss structure and the inner surface of the gear adjustment component is provided with the plurality of second mating parts at intervals in the circumferential direction.

5. The adjustable depth injection needle according to claim 4, wherein: The boss structure is a near-cylindrical structure with a reduced radial dimension relative to one end of the pin seat.

6. The adjustable depth injection needle according to claim 5, wherein: The gear adjustment component is sleeved on the boss structure, and the inner wall surface of the gear adjustment component is in friction fit or interference fit with the outer wall surface of the boss structure.

7. The adjustable-depth injection needle according to claim 5, wherein: The outer wall of the boss structure near the needle outlet has a radially outward protrusion. The inner wall of the gear adjustment component is provided with annular ribs or annular steps; The protrusion is adapted to engage with the annular rib or annular step in a direction toward the needle outlet and in a manner away from the needle outlet.

8. The adjustable depth injection needle according to any one of claims 1-7, wherein: One of the first and second mating parts is an axially extending groove structure, and the other is an axially extending rib structure adapted to move along the groove structure, wherein one end face of the rib structure is adapted to abut against the abutting end face of the groove structure in the axial direction; or One of the first mating part and the second mating part is an axially extending groove structure, and the other mating part is a protrusion adapted to move along the groove structure. The protrusion is adapted to abut against the abutting end face of the groove structure in the axial direction.

9. The adjustable depth injection needle according to claim 8, wherein: The groove structure has different axial extension lengths; and Based on the relative rotation between the gear adjustment component and the needle seat, the rib structure or the protrusion is adapted to enter different groove structures.

10. The adjustable depth injection needle according to claim 9, wherein: The groove structure consists of multiple grooves of different axial lengths that are provided on the gear adjustment component and extend axially from one end of the gear adjustment component away from the needle outlet to the other end. Rotating the gear adjustment component allows the rib structure to be adapted to enter different groove structures, or the protrusion to enter different groove structures.

11. The adjustable depth injection needle according to claim 10, wherein: Adjacent groove structures are provided with axially extending groove ribs in the circumferential direction. When the gear adjustment component is rotated, the ribs or protrusions are adapted to cross the groove ribs in the circumferential direction and enter the corresponding groove structure, and the crossing generates a gear shifting feel.

12. The adjustable depth injection needle according to claim 10, wherein: The outer wall of the gear adjustment component is provided with multiple gear indicator structures at positions corresponding to multiple slot structures.

13. The adjustable depth injection needle according to claim 7, wherein: The second mating part is a plurality of axially extending groove structures provided on the inner wall surface of the gear adjustment member, and the first mating part is an axially extending rib structure provided on the outer wall surface of the boss structure, which is suitable for moving along the groove structure. One end face of the rib structure is suitable for axially abutting the abutting end face of the groove structure. When the rib structure does not enter the groove structure, the axial distance between the protrusion and the rib structure allows the protrusion to move circumferentially along the annular rib or annular step.

14. The adjustable-depth injection needle according to any one of claims 1-13, wherein: The first mating part and the second mating part at different positions in the circumferential direction abut their abutting surfaces at different positions in the axial direction. The abutting surfaces are defined by the end face of the groove structure or the side wall surface of the rib or protrusion. The rib or protrusion abuts and engages with the abutting surfaces.

15. An injection pen structure, comprising: Injection pen; and An adjustable depth injection needle according to any one of claims 1-14.

16. The injection pen structure according to claim 15, wherein: The injection pen is an insulin injection pen.

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