Dose setting sound structure for an insulin injection pen

Abstract

This utility model discloses a dose-adjusting sound-emitting structure for an insulin injection pen, belonging to the field of medical device technology. It includes: a main body shell; a dose-dispensing cylinder inserted into the main body shell and threadedly connected to it, which allows for dose adjustment by rotating the cylinder inwards or outwards along the main body shell; a transmission tube disposed within the dose-dispensing cylinder; and an adjusting sound-emitting ring fitted onto the transmission tube. The adjusting sound-emitting ring and the dose-dispensing cylinder cooperate to form a forward-adjusting sound-emitting structure, and the adjusting sound-emitting ring and the transmission tube cooperate to form a reverse-adjusting sound-emitting structure. By adjusting only the sound-emitting ring, the sound emission during both forward and reverse rotation of the dose-dispensing cylinder can be achieved. This optimizes the overall structure, reduces the number of parts, and makes the overall structure more compact and reliable. Furthermore, the reduction in the number of parts simplifies the assembly process and reduces the risk of malfunctions that may arise from assembling multiple parts.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a dose adjustment sound-emitting structure for an insulin injection pen. Background Technology

[0002] In recent years, with the continuous rise in the incidence of diabetes, the demand for convenient, safe, and efficient drug delivery devices has also increased. Insulin pens, as an indispensable part of diabetes treatment, have been widely used.

[0003] Insulin pens involve both dosage adjustment and injection processes. During dosage adjustment, a sound-emitting mechanism is often included to provide better feedback. However, current sound-emitting mechanisms are complex in design, involving many parts, which leads to complicated assembly and insufficient overall reliability. This can result in mechanical failures or performance instability over long-term use. Utility Model Content

[0004] This invention addresses the aforementioned problems in the existing technology by proposing a dose-adjusting sound structure for an insulin pen that is simple in structure and can achieve forward and reverse adjustment of sound emission.

[0005] This utility model can be achieved through the following technical solutions:

[0006] A dose-adjusting sound-emitting structure for an insulin pen includes:

[0007] Main body shell;

[0008] A dosing cylinder is inserted into the main body housing and the two are threaded together. The injection dose can be adjusted by rotating the dosing cylinder inward or outward along the main body housing.

[0009] A transmission tube is disposed inside the dosage drum;

[0010] An adjusting sound-emitting ring is sleeved on the transmission tube. The adjusting sound-emitting ring and the dose rotating cylinder cooperate to form a positive adjusting sound-emitting structure, and the adjusting sound-emitting ring and the transmission tube cooperate to form a negative adjusting sound-emitting structure. When the dose rotating cylinder rotates in the forward direction, the positive adjusting sound-emitting structure emits sound, and when the dose rotating cylinder rotates in the reverse direction, the negative adjusting sound-emitting structure emits sound.

[0011] As a further improvement of this utility model, the dosing cylinder includes an integrally connected cylinder body and an adjustment part, the outer wall of the cylinder body is threadedly connected to the inner wall of the main body shell, and the adjustment part is located outside the main body shell.

[0012] As a further improvement of this utility model, the transmission tube includes an integrally connected tube body and a transmission part. The tube body is inserted into the cylindrical body, and a receiving space is formed between the transmission part and the adjustment part. The adjustment and sound-emitting ring is sleeved on the adjustment part and located in the receiving space.

[0013] As a further improvement of this utility model, the inner wall of the adjustment part is provided with a first thorn distributed in a ring, and the first thorn is unidirectionally oblique.

[0014] As a further improvement of this utility model, the outer wall of the adjusting sound ring is provided with an outwardly protruding first elastic tooth, which engages with the first thorn to form the positive adjusting sound structure.

[0015] As a further improvement of this utility model, the outer wall of the transmission part is provided with a second thorn distributed in a ring, and the second thorn is unidirectionally deflected in the opposite direction to the first thorn.

[0016] As a further improvement of this utility model, the inner wall of the adjusting sound ring is provided with an inwardly protruding second elastic tooth, which engages with the second thorn to form the reverse adjusting sound structure.

[0017] As a further improvement of this utility model, the transmission part has a clutch surface for disengaging with the dose rotating cylinder, the clutch surface has downward protruding dose rotating cylinder meshing teeth, and the dose rotating cylinder has upward protruding transmission tube meshing teeth.

[0018] As a further improvement of this utility model, during the dosage adjustment process, the engagement surface of the transmission tube is always separated from the dosage drum, and as the dosage drum rotates, it causes the transmission tube to jump up and down.

[0019] As a further improvement of this utility model, during the forward rotation of the dosage drum, the transmission tube and the adjusting sound-emitting ring do not rotate, and the first elastic tooth contacts the first thorn to produce sound.

[0020] During the reverse rotation of the dosage drum, the dosage drum drives the adjusting sound-emitting ring to rotate while the transmission tube does not rotate, and the second elastic tooth contacts the second spike to produce sound.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By adjusting only one part, the sound-generating ring, the sound generation problem when the dosing cylinder rotates in both directions can be solved. This optimizes the overall structure, simplifies the number of parts, and makes the overall structure more compact and reliable. The reduction in the number of parts not only makes the product assembly process simpler, but also reduces the risk of failure that may be caused by assembling multiple parts, improves the stability and durability of the equipment, and reduces production costs.

[0023] 2. The setting of positive and negative adjustment of the sound-emitting structure provides clear auditory feedback, which helps users confirm the completion of the dose adjustment operation, especially important for patients with limited vision or who need to operate without looking at the device;

[0024] 3. The bottom of the adjusting sound ring is equipped with a limiting protrusion, and the transmission part is equipped with a limiting protrusion ring. The cooperation between the limiting protrusion ring and the limiting protrusion ring plays a limiting role in the up and down direction of the adjusting sound ring, ensuring that the adjusting sound ring will not detach from the transmission tube, thereby ensuring the stability and reliability of the adjusting sound structure after installation. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the insulin injection pen of this utility model;

[0026] Figure 2 This is the utility model Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 This is a schematic diagram of the positive adjustment sound-generating structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the reverse-adjustment sound-generating structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the dosage rotating cylinder of this utility model;

[0030] Figure 6 This is a schematic diagram of the transmission tube of this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the adjustable sound-generating ring of this utility model.

[0032] In the image, 100 represents the main outer shell;

[0033] 200. Dosing cylinder; 210. Cylinder body; 220. Adjustment unit; 221. Transmission tube mating gear; 222. First thorn;

[0034] 300. Transmission tube; 310. Tube body; 320. Transmission part; 321. Limiting protrusion ring; 322. Dosing cylinder meshing teeth; 323. Second thorn;

[0035] 400. Adjusting sound ring; 410. Limiting protrusion; 420. First elastic tooth; 430. Second elastic tooth. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0037] like Figure 1-7 As shown, this utility model provides a dose-adjusting sound-emitting structure for an insulin injection pen, comprising:

[0038] The main body shell 100 serves as the external frame of the insulin pen, ensuring the secure installation of the internal components.

[0039] The dosage drum 200 is inserted into the main body housing 100 and the two are threaded together. The dosage is adjusted by rotating the dosage drum 200 to rotate inward or outward along the main body housing 100. The direction of rotation of the dosage drum 200 determines whether the predetermined dosage is increased or decreased.

[0040] The transmission tube 300 is disposed inside the dose rotating cylinder 200, and the transmission tube 300 is engaged and disengaged from the dose rotating cylinder 200.

[0041] An adjusting sound-emitting ring 400 is sleeved on the transmission tube 300. The adjusting sound-emitting ring 400 and the dose rotating cylinder 200 cooperate to form a positive adjusting sound-emitting structure, and the adjusting sound-emitting ring 400 and the transmission tube 300 cooperate to form a negative adjusting sound-emitting structure. When the dose rotating cylinder 200 rotates in the forward direction, the positive adjusting sound-emitting structure emits sound, and when the dose rotating cylinder 200 rotates in the reverse direction, the negative adjusting sound-emitting structure emits sound.

[0042] By providing both forward and reverse adjustment of the sound-emitting structure, clear auditory feedback is offered, helping users confirm the completion of dose adjustment operations. This is especially important for patients with limited vision or those who need to operate without looking at the device.

[0043] It should be noted that the dosage drum 200 is mainly used to determine the injection dosage. The entire insulin pen also includes a drive mechanism and a drug cartridge. During injection, the drive mechanism is driven by the transmission tube 300 to push the stopper of the drug bottle in the drug cartridge forward, thereby completing the injection action. Therefore, the dosage adjustment and injection action can be completed through the dosage drum 200, transmission tube 300, and drive mechanism.

[0044] In other words, in this embodiment, only one part, the sound-generating ring 400, needs to be adjusted to achieve the sound generation problem when the dosage drum 200 rotates in both the forward and reverse directions. This optimizes the overall structure, simplifies the number of parts, and makes the overall structure more compact and reliable. It is precisely because of the reduction in the number of parts that not only is the product assembly process simpler, but the risk of failure caused by the assembly of multiple parts is also reduced, the stability and durability of the equipment are improved, and the production cost is reduced.

[0045] Preferably, the dosing cylinder 200 includes an integrally connected cylinder part 210 and an adjustment part 220. The outer wall of the cylinder part 210 is threadedly connected to the inner wall of the main body shell 100. The adjustment part 220 is located outside the main body shell 100. When adjusting the dosage, by rotating the adjustment part 220, the cylinder part 210 is driven to rotate up and down along the thread line of the main body shell 100 to determine the required injection dosage.

[0046] Preferably, the transmission tube 300 includes an integrally connected tube body 310 and transmission part 320. The tube body 310 is inserted into the cylindrical body 210, and a receiving space is formed between the transmission part 320 and the adjusting part 220. The adjusting sound-emitting ring 400 is sleeved on the adjusting part 220 and located within the receiving space.

[0047] The bottom of the adjusting sound ring 400 is provided with a limiting protrusion 410, and the transmission part 320 is provided with a limiting protrusion 321. The cooperation between the limiting protrusion 321 and the limiting protrusion 410 plays a limiting role in the up and down direction of the adjusting sound ring 400, ensuring that the adjusting sound ring 400 will not detach from the transmission tube 300, thereby ensuring the stability and reliability of the adjusting sound structure after installation.

[0048] Furthermore, the transmission unit 320 has a clutch surface for engaging with the dose rotating cylinder 200. The clutch surface has downward protruding dose rotating cylinder meshing teeth 322, while the dose rotating cylinder 200 has upward protruding transmission tube engaging teeth 221. During the dose adjustment process, the clutch surface of the transmission tube 300 is always separated from the dose rotating cylinder 200. As the dose rotating cylinder 200 rotates, it drives the transmission tube 300 to jump up and down.

[0049] It should be noted here that the design of the engagement surface allows for two states between the transmission tube 300 and the dosage drum 200:

[0050] When the dosing cylinder meshing teeth 322 and the transmission tube meshing teeth 221 are separated, the rotation of the dosing cylinder 200 will only cause the transmission tube 300 to jump up and down.

[0051] When the dosing cylinder meshing teeth 322 and the transmission tube meshing teeth 221, the rotation of the dosing cylinder 200 will drive the transmission tube 300 to rotate synchronously.

[0052] The reason for these two states is that they correspond to the dosage adjustment process and the injection process, respectively. During the dosage adjustment process, as the dosage drum 200 rotates, the transmission tube 300 does not rotate synchronously, but jumps up and down, thereby achieving the purpose of adjusting the sound output.

[0053] Only when the injection is performed, after the transmission tube 300 is compressed, its engagement surface meshes with the dosage drum 200. The rotation of the dosage drum 200 can drive the transmission tube 300 to rotate. Subsequently, the rotation of the transmission tube 300 presses down, driving the drive mechanism to move, so as to achieve the purpose of injection and drug delivery.

[0054] Since this embodiment focuses on how to generate sound during dosage adjustment, only the state when the dosage cylinder meshing teeth 322 and the transmission tube mating teeth 221 are separated will be specifically described.

[0055] To better illustrate the sound generation principle during dose adjustment, the following are detailed structures of the forward and reverse adjustment sound generation structures:

[0056] Specifically, the inner wall of the adjustment part 220 is provided with a first thorn 222 distributed in a ring. The first thorn 222 is unidirectionally oblique. At the same time, the outer wall of the adjustment sound ring 400 is provided with a first elastic tooth 420 protruding outward. The first elastic tooth 420 is engaged with the first thorn 222 to form a positive adjustment sound structure.

[0057] Meanwhile, the outer wall of the transmission part 320 is provided with a second thorn 323 distributed in a ring. The second thorn 323 is unidirectionally deflected in the opposite direction to the first thorn 222. At the same time, the inner wall of the adjusting sound ring 400 is provided with an inwardly protruding second elastic tooth 430. The second elastic tooth 430 is engaged with the second thorn 323 to form a reverse adjusting sound structure.

[0058] Because the first thorn 222 and the second thorn 323 are unidirectionally deflected in opposite directions, the positive adjustment sound-producing structure formed by the first thorn 222 and the first elastic tooth 420 and the negative adjustment sound-producing structure formed by the second thorn 323 and the second elastic tooth 430 can only produce sound at one place at a time. This is because when the first thorn 222 and the first elastic tooth 420 rotate relative to each other and make contact to produce sound, the second thorn 323 and the second elastic tooth 430 are in a limiting relationship, and vice versa.

[0059] The specific sound generation principle during dosage adjustment is explained below:

[0060] Positive adjustment of sound generation: During the forward rotation of the dosage drum 200, the transmission tube 300 and the adjusting sound generation ring 400 do not rotate. When the surface where the first thorn 222 is located rotates, the second thorn 323 limits the second elastic tooth 430, restricting the rotation of the adjusting sound generation ring 400. Thus, the first thorn 222 and the first elastic tooth 420 can rotate relative to each other, achieving the purpose of contact sound generation.

[0061] Reverse adjustment of sound generation: When the dosage cylinder 200 rotates in the reverse direction, the first thorn 222 limits the first elastic tooth 420. At this time, the dosage cylinder 200 drives the adjustment sound generation ring 400 to rotate, while the transmission tube 300 does not rotate. Thus, the second thorn 323 and the second elastic tooth 430 can rotate relative to each other, achieving the purpose of contact sound generation.

[0062] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0063] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0064] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0066] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A dose-adjusting sound-emitting structure for an insulin injection pen, characterized in that, include: Main body shell; A dosing cylinder is inserted into the main body housing and the two are threaded together. The injection dose can be adjusted by rotating the dosing cylinder inward or outward along the main body housing. A transmission tube is disposed inside the dosage drum; An adjusting sound-emitting ring is sleeved on the transmission tube. The adjusting sound-emitting ring and the dose rotating cylinder cooperate to form a positive adjusting sound-emitting structure, and the adjusting sound-emitting ring and the transmission tube cooperate to form a negative adjusting sound-emitting structure. When the dose rotating cylinder rotates in the forward direction, the positive adjusting sound-emitting structure emits sound, and when the dose rotating cylinder rotates in the reverse direction, the negative adjusting sound-emitting structure emits sound.

2. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 1, characterized in that, The dosing cylinder includes an integrally connected cylinder body and an adjustment part. The outer wall of the cylinder body is threadedly connected to the inner wall of the main body shell, and the adjustment part is located outside the main body shell.

3. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 2, characterized in that, The transmission tube includes an integrally connected tube body and a transmission part. The tube body is inserted into the cylindrical body. A receiving space is formed between the transmission part and the adjustment part. The adjustment and sound-emitting ring is sleeved on the adjustment part and located in the receiving space.

4. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 3, characterized in that, The inner wall of the adjustment part is provided with a first thorn distributed in a ring, and the first thorn is unidirectionally deflected.

5. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 4, characterized in that, The outer wall of the adjusting sound ring is provided with an outwardly protruding first elastic tooth, which engages with the first thorn to form the positive adjusting sound structure.

6. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 5, characterized in that, The outer wall of the transmission part is provided with a second thorn distributed in a ring, and the second thorn is unidirectionally deflected in the opposite direction to the first thorn.

7. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 6, characterized in that, The inner wall of the adjusting sound ring is provided with an inwardly protruding second elastic tooth, which engages with the second thorn to form the reverse adjusting sound structure.

8. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 6, characterized in that, The transmission unit has a clutch surface for engaging with the dose cylinder, the clutch surface having downward protruding dose cylinder engagement teeth, and the dose cylinder having upward protruding transmission tube engagement teeth.

9. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 8, characterized in that, During the dosage adjustment process, the engagement surface of the transmission tube is always separated from the dosage drum. As the dosage drum rotates, it causes the transmission tube to jump up and down.

10. The dose-adjusting sound-emitting structure of an insulin injection pen according to claim 7, characterized in that, During the forward rotation of the dosage drum, the transmission tube and the adjusting sound ring do not rotate, and the first elastic tooth contacts the first spike to produce sound; During the reverse rotation of the dosage drum, the dosage drum drives the adjusting sound-emitting ring to rotate while the transmission tube does not rotate, and the second elastic tooth contacts the second spike to produce sound.

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