High-sealing negative-pressure silica gel head and dosing instrument

Abstract

The utility model relates to the technical field of dosing instrument equipment, in particular to a high-sealing negative pressure silica gel head and a dosing instrument, which comprises a dosing instrument cylinder body, and an annular heating sheet is fixedly arranged on the lower end face of the dosing instrument cylinder body; the silica gel head is arranged on the outer side of one end of the dosing instrument cylinder in a sleeving mode and comprises an inner cylinder, a plurality of flexible limiting check blocks distributed in an annular array mode are fixedly arranged on the inner wall of the inner cylinder, the inner cylinder is sleeved with an outer cylinder concentric with the inner cylinder, a gap is reserved between the inner cylinder and the outer cylinder to form a negative pressure cavity, and the upper edge of the outer cylinder is bent inwards to form a deformation part. The deformation part is fixed with the upper edge of the inner cylinder; the device has the beneficial effects that the inner wall of the inner cylinder is fixedly provided with a plurality of limiting check blocks which are distributed in an annular array mode, the limiting check blocks are made of flexible materials, annular absorbent cotton can be tightly pressed on the lower surface of the annular heating piece from bottom to top, shaking is avoided, and it is ensured that the annular heating piece can stably heat and atomize the annular absorbent cotton.

Description

Technical Field

[0001] The utility model relates to the technical field of drug delivery devices, in particular to a highly sealed negative pressure silicone head and a drug delivery device. Background Technique

[0002] The drug delivery device enables the drug to penetrate through the skin into the diseased part or acupoint of the human body to play a role, which can avoid the harm of oral drugs, especially drugs with high toxicity, to the gastrointestinal tract, avoid the decomposition and destruction of the effective components of the drug by the first-pass effect of the liver, and has small side effects. It is an effective method for treating diseases.

[0003] In the prior art, one end of the drug delivery device covers the patient's skin through a silicone head, a cotton ball is placed inside the silicone head, and the liquid medicine in the cotton ball acts on the patient's skin surface through the heating and atomization of the drug delivery device.

[0004] However, at present, the cotton ball itself has a soft texture and is prone to shaking when placed inside the silicone head, resulting in separation from the heating sheet on the drug delivery device, thereby causing poor atomization effect of the liquid medicine. For this reason, the utility model provides a highly sealed negative pressure silicone head and a drug delivery device to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a highly sealed negative pressure silicone head and a drug delivery device to solve the problem that the cotton ball in the silicone head is prone to shaking as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A highly sealed negative pressure silicone head, comprising:

[0007] A drug delivery device cylinder body, a circular heating sheet is fixedly installed on the lower end surface of the drug delivery device cylinder body, and a circular cotton ball is attached to the lower surface of the circular heating sheet;

[0008] A silicone head, the silicone head is sleeved on the outer side of one end of the drug delivery device cylinder body. The silicone head includes an inner cylinder, and a plurality of flexible limiting blocks distributed in a circular array are fixedly arranged on the inner wall of the inner cylinder. The limiting blocks press on the lower surface of the circular cotton ball from bottom to top. An outer cylinder concentric with the inner cylinder is sleeved outside the inner cylinder, and a gap is left between the two to form a negative pressure cavity. The upper edge of the outer cylinder is bent inward to form a deformation part, and the deformation part is fixed to the upper edge of the inner cylinder. The cross-section of the deformation part is set in a "V" shape with the opening downward, and the corner is set in a circular arc shape.

[0009] Preferably, an annular mounting sleeve is fixedly arranged at the upper edge of the inner cylinder. The inner cylinder, the annular mounting sleeve, the outer cylinder and the deformation part are integrally formed. A plurality of annular grooves evenly distributed at equal intervals are formed in the inner wall of the annular mounting sleeve. An annular flange adapted to the annular grooves is arranged at the lower end of the surface of the medicine administration device cylinder body. The annular mounting sleeve is sleeved on the outer side of the lower end of the medicine administration device cylinder body, and the annular grooves are in clamping fit with the annular flange.

[0010] Preferably, a plurality of nano red light emitters distributed in an annular array are arranged on the lower end surface of the medicine administration device cylinder body. A groove is formed in the middle of the lower surface of the annular heating sheet. The nano red light emitters are fixed in the groove on the lower surface of the annular heating sheet.

[0011] Preferably, an air extraction pipe is communicated with the outer side of the medicine administration device cylinder body. An air suction port is formed at the edge of the annular heating sheet. The air suction port communicates the negative pressure cavity between the inner cylinder and the outer cylinder with the inner cavity of the medicine administration device cylinder body.

[0012] Preferably, a convex block is fixedly arranged on the inner wall of the inner cylinder. The convex block is located in the inner cavity of the air suction port and is adapted to it. A docking port is formed on the upper surface of the convex block. An air passage is formed inside the convex block. The opening end of the air passage communicates the negative pressure cavity between the inner cylinder and the outer cylinder.

[0013] Preferably, arc-shaped cutouts are formed at the lower edges of both the inner cylinder and the outer cylinder.

[0014] A medicine administration device includes the above-mentioned high-sealing negative pressure silicone head.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, a plurality of limiting blocks distributed in an annular array are fixedly arranged on the inner wall of the inner cylinder. The limiting blocks are made of flexible materials and can tightly press the annular cotton ball against the lower surface of the annular heating sheet from bottom to top, avoiding shaking and ensuring that the annular heating sheet can stably heat and atomize the annular cotton ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded schematic view of the overall structure of the present utility model;

[0018] Figure 2 is a three-dimensional sectional view of the structure of the silicone head of the present utility model;

[0019] Figure 3 is a three-dimensional schematic view of the structure of the silicone head of the present utility model;

[0020] Figure 4 is the present utility model Figure 2 is an enlarged schematic view of the structure at A in.

[0021] In the figure: 1. barrel of the drug delivery device; 2. annular heating sheet; 3. nano-red light emitter; 4. air inlet; 5. silica gel head; 51. inner cylinder; 511. annular mounting sleeve; 512. annular groove; 52. outer cylinder; 521. deformation part; 53. limit stop; 54. convex block; 541. docking port; 542. air passage; 55. arc-shaped incision; 6. annular cotton ball for medicine. Detailed implementation mode

[0022] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily complicating these embodiments. Additionally, all embodiments can be used in combination with each other.

[0026] Please refer to Figures 1 to 4 , the present utility model provides a technical solution:

[0027] Embodiment 1, a highly sealed negative pressure silicone head, comprising: a medicine delivery instrument cylinder body 1 and a silicone head 5.

[0028] Specifically, an annular heating sheet 2 is fixedly installed on the lower end surface of the medicine delivery instrument cylinder body 1. The lower surface of the annular heating sheet 2 is attached to an annular cotton ball 6. The annular cotton ball 6 is filled with a liquid medicine for treating the patient's skin. Heating the annular cotton ball 6 by the annular heating sheet 2 can cause the liquid medicine in the annular cotton ball 6 to evaporate into a mist and act on the patient's skin;

[0029] Secondly, the silicone head 5 is sleeved on the outer side of one end of the medicine delivery instrument cylinder body 1. The silicone head 5 includes an inner cylinder 51. A plurality of flexible limiting blocks 53 distributed in an annular array are fixedly arranged on the inner wall of the inner cylinder 51. The limiting blocks 53 press on the lower surface of the annular cotton ball 6 from bottom to top. As Figure 1 and Figure 2 shown, after the silicone head 5 is installed on the outer side of the lower end of the medicine delivery instrument cylinder body 1, the limiting blocks 53 can just press on the lower surface of the annular cotton ball 6 from bottom to top, so that the annular cotton ball 6 is kept in close contact with the annular heating sheet 2, preventing the annular cotton ball 6 from shaking or even separating from the annular heating sheet 2, ensuring that the annular heating sheet 2 can always stably heat and atomize the annular cotton ball 6. An outer cylinder 52 concentric with the inner cylinder 51 is sleeved on the outside of the inner cylinder 51, and a gap is left between them to form a negative pressure chamber. The upper edge of the outer cylinder 52 is bent inward to form a deformation part 521, and the deformation part 521 is fixed to the upper edge of the inner cylinder 51. As Figure 2 shown, the negative pressure chamber between the inner cylinder 51 and the outer cylinder 52 can stably adsorb the whole silicone head 5 on the patient's skin surface, reducing the dissipation and waste of the liquid medicine and ensuring that the liquid medicine can accurately act on the lesion. The cross-section of the deformation part 521 is set in a "V" shape with the opening downward, and the corner is set in a circular arc shape. The setting of the deformation part 521 enables the outer cylinder 52 to have good elastic deformation ability and can better adsorb to the patient's skin.

[0030] In order to connect the silicone head 5 with the medicine delivery instrument cylinder body 1, the present application also has an annular installation sleeve 511 fixedly arranged on the upper edge of the inner cylinder 51. The inner cylinder 51, the annular installation sleeve 511, the outer cylinder 52 and the deformation part 521 are integrally formed and made of a silicone material that can undergo elastic deformation, which can reduce the generation of cracks at the connection part. A plurality of annular grooves 512 are equally spaced on the inner wall of the annular installation sleeve 511. An annular flange adapted to the annular grooves 512 is arranged at the lower end of the surface of the medicine delivery instrument cylinder body 1. The annular installation sleeve 511 is sleeved on the outer side of the lower end of the medicine delivery instrument cylinder body 1, and the annular grooves 512 are in snap-fit with the annular flange. Combining Figure 2 and Figure 1It can be seen that after the annular mounting sleeve 511 is sleeved on the outer side of the lower end of the medicine delivery device cylinder body 1, through the cooperation of the annular groove 512 and the annular flange, not only can the connection stability between the silica gel head 5 and the medicine delivery device cylinder body 1 be improved, but also the sealing performance between the two can be improved to prevent the escape of the liquid medicine. In addition, the annular mounting sleeve 511 itself has the ability of elastic deformation, and the silica gel head 5 can be disassembled and installed at will, which is more convenient to use.

[0031] In order to heat the annular cotton ball 6, the present application also has a plurality of nano-red light emitters 3 arranged in an annular array on the lower end surface of the medicine delivery device cylinder body 1. The nano-red light emitted by the nano-red light emitters 3 can be used for further treatment of the patient's skin. A groove is opened in the middle of the lower surface of the annular heating sheet 2, and the nano-red light emitter 3 is fixed in the groove on the lower surface of the annular heating sheet 2. As Figure 1 shown, since the nano-red light emitter 3 generates heat during operation, this heat can be directly transferred to the annular heating sheet 2, making the temperature of the annular heating sheet 2 rise and heating and atomizing the annular cotton ball 6. Therefore, the annular heating sheet 2 does not need to be heated additionally, and it only needs to have good heat conduction performance itself.

[0032] In order to adsorb the silica gel head 5 on the patient's skin surface, the present application also has an air extraction pipe communicated with the outside of the medicine delivery device cylinder body 1. An air suction port 4 is opened at the edge of the annular heating sheet 2, and the air suction port 4 communicates the negative pressure cavity between the inner cylinder 51 and the outer cylinder 52 with the inner cavity of the medicine delivery device cylinder body 1. As Figure 1 shown, the air extraction pipe extracts negative pressure from the inner cavity of the medicine delivery device cylinder body 1. Through the connection of the air suction port 4, a negative pressure can be formed in the negative pressure cavity between the inner cylinder 51 and the outer cylinder 52 to ensure that the silica gel head 5 can be adsorbed on the patient's skin surface.

[0033] In order to connect the air suction port 4 with the negative pressure cavity, the present application also has a convex block 54 fixedly arranged on the inner wall of the inner cylinder 51. The convex block 54 is located in the inner cavity of the air suction port 4 and is adapted to it. The convex block 54 is inserted into the inner cavity of the air suction port 4 to prevent the air suction port 4 from extracting negative pressure from the inner cavity of the inner cylinder 51. A docking port 541 is opened on the upper surface of the convex block 54, and an air passage 542 is opened inside the convex block 54. The opening end of the air passage 542 communicates with the negative pressure cavity between the inner cylinder 51 and the outer cylinder 52. As Figure 4 shown, the cooperation of the docking port 541 and the air passage 542 ensures that the air suction port 4 can only extract negative pressure from the negative pressure cavity between the inner cylinder 51 and the outer cylinder 52.

[0034] In order to increase the applicable range of the device, the present application also has arc-shaped cuts 55 opened on the lower edges of both the inner cylinder 51 and the outer cylinder 52 for cooperation with thinner parts such as the patient's arm.

[0035] The present application also discloses a medicine delivery device, including the above-mentioned high-sealing negative pressure silica gel head.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A highly sealed negative pressure silicone head, characterized in that: Comprising: A medicine administration device cylinder body (1), a ring-shaped heating sheet (2) is fixedly installed on the lower end surface of the medicine administration device cylinder body (1), and a ring-shaped cotton ball (6) is attached to the lower surface of the ring-shaped heating sheet (2); A silica gel head (5), the silica gel head (5) is sleeved on the outer side of one end of the medicine administration device cylinder body (1), the silica gel head (5) includes an inner cylinder (51), and a plurality of flexible limiting blocks (53) distributed in a circular array are fixedly arranged on the inner wall of the inner cylinder (51), the limiting blocks (53) press on the lower surface of the ring-shaped cotton ball (6) from bottom to top, an outer cylinder (52) concentric with the inner cylinder (51) is sleeved on the outside of the inner cylinder (51), and a negative pressure cavity is formed by a gap between the two, the upper edge of the outer cylinder (52) is bent inwards to form a deformation part (521), and the deformation part (521) is fixed to the upper edge of the inner cylinder (51), the cross section of the deformation part (521) is arranged in a "V" shape with the opening downwards, and the corner is arranged in an arc shape.

2. The high-sealing negative-pressure silicone head according to claim 1, characterized in that: A ring-shaped mounting sleeve (511) is fixedly arranged on the upper edge of the inner cylinder (51), the inner cylinder (51), the ring-shaped mounting sleeve (511), the outer cylinder (52) and the deformation part (521) are integrally formed, a plurality of annular grooves (512) are equally spaced and arranged on the inner wall of the ring-shaped mounting sleeve (511), a ring-shaped flange adapted to the annular grooves (512) is arranged at the lower end of the surface of the medicine administration device cylinder body (1), the ring-shaped mounting sleeve (511) is sleeved on the outer side of the lower end of the medicine administration device cylinder body (1), and the annular grooves (512) are in snap-fit connection with the ring-shaped flange.

3. The high-sealing negative-pressure silica gel head according to claim 2, characterized in that: A plurality of nano-red light emitters (3) distributed in a circular array are arranged on the lower end surface of the medicine administration device cylinder body (1), a groove is opened in the middle of the lower surface of the ring-shaped heating sheet (2), and the nano-red light emitters (3) are fixed in the groove on the lower surface of the ring-shaped heating sheet (2).

4. The high-sealing negative-pressure silicone head according to claim 3, wherein: An air extraction pipe is communicated with the outer side of the medicine administration device cylinder body (1), an air suction port (4) is opened at the edge of the ring-shaped heating sheet (2), and the air suction port (4) communicates the negative pressure cavity between the inner cylinder (51) and the outer cylinder (52) with the inner cavity of the medicine administration device cylinder body (1).

5. The high-sealing negative-pressure silica gel head according to claim 4, characterized in that: A convex block (54) is fixedly arranged on the inner wall of the inner cylinder (51), the convex block (54) is located in the inner cavity of the air suction port (4) and is adapted to it, a docking port (541) is opened on the upper surface of the convex block (54), an air duct (542) is opened inside the convex block (54), and the opening end of the air duct (542) communicates with the negative pressure cavity between the inner cylinder (51) and the outer cylinder (52).

6. The high-sealing negative-pressure silica gel head according to claim 5, wherein: Arc-shaped cuts (55) are opened at the lower edges of both the inner cylinder (51) and the outer cylinder (52).

7. A drug delivery device, characterized in that: Comprising the highly sealed negative pressure silica gel head according to any one of claims 1-6.

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