US-20260124356-A1 - APPARATUS FOR INFUSING MEDICAL LIQUID

US20260124356A1US 20260124356 A1US20260124356 A1US 20260124356A1US-20260124356-A1

Abstract

An apparatus for infusing medical liquid, the apparatus including: a needle module having at least one needle portion formed to be injected into a user's body; a medical liquid storage portion having an inner space to store medical liquid delivered to the needle module, wherein an inner surface of the inner space includes a surface-treated shape; and a driving portion connected to the medical liquid storage portion to transfer the medical liquid of the medical liquid storage portion to the needle module.

Inventors

Yongjoon Han

Assignees

Dates

Publication Date: 20260507
Application Date: 20251229

Claims (10)

1 . An apparatus for infusing medical liquid, the apparatus comprising: a needle module having at least one needle portion configured to be injected into a user's body; a medical liquid storage portion having an inner space to store medical liquid delivered to the needle module, wherein an inner surface of the inner space includes a surface-treated shape, the surface-treated shape of the inner surface including a region including a plurality of protrusions; a driving portion connected to the medical liquid storage portion to transfer the medical liquid of the medical liquid storage portion to the needle module, the driving portion including a pump; at least one moving portion for moving the medical liquid disposed in the inner space of the medical liquid storage portion; and a connection portion disposed between the needle module and the medical liquid storage portion, the connection portion including a delivery region with a hollow tube shape; wherein the surface-treated shape of the inner surface has the same material as the inner surface of the medical liquid storage portion and is integrated with the inner surface of the medical liquid storage portion.
2 . The apparatus of claim 1 , wherein the inner surface of the inner space of the medical liquid storage portion and an outer surface of the medical liquid storage portion have different surface shapes from each other.
3 . The apparatus of claim 1 , wherein a roughness value of the inner surface of the inner space of the medical liquid storage portion is different from a roughness value of an outer surface of the medical liquid storage portion.
4 . The apparatus of claim 4 , wherein the roughness value of the inner surface of the inner space of the medical liquid storage portion is greater than the roughness value of the outer surface of the medical liquid storage portion.
5 . The apparatus of claim 1 , further comprising a cover portion formed to cover the medical liquid storage portion, the needle module and the driving portion.
6 . The apparatus of claim 5 , further comprising a base formed to face the cover.
7 . The apparatus of claim 6 , wherein the cover and the base are connected to each other to become a housing of the apparatus for infusing medical liquid.
8 . The apparatus of claim 6 , further comprising a sensor positioned between the cover and the base, or on at least one surface of them.
9 . The apparatus of claim 5 , wherein the cover includes an opening, a button is disposed to correspond to the opening.
10 . The apparatus of claim 1 , wherein the driving portion is connected to a power source.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 17/637,678, filed Feb. 23, 2022, which is the U.S. national phase under 35. U.S.C. § 371 of international application PCT/KR2020/011321, filed Aug. 25, 2020. The disclosure of the above-described application is hereby incorporated by reference in its entirety. BACKGROUND Field Embodiments of the present disclosure relate to an apparatus for infusing medical liquid. Description of Related Art An apparatus for infusing medical liquid, such as an apparatus for infusing insulin, is used to infuse medical liquid into a patient's body, which is sometimes used by medical professionals such as doctors and nurses, but is in most cases used by the general public, such as the patient himself or a caregiver. And, since the medical liquid infused through the apparatus for infusing medical liquid is often taken by the patient for a long time, the patient experiences pain of inserting a needle of the apparatus for infusing medical liquid several times. This apparatus for infusing medical liquid has the needle from which the medical liquid is discharged, and may infuse the medical liquid into the patient's body once or multiple times, after the needle is injected into the patient's body. On the other hand, in order to increase the effect through the infusion of the medical liquid, the apparatus for infusing medical liquid needs to be controlled to precisely infuse the medical liquid into the patient's body, but there is a limit to precisely infusing a small amount of medical liquid through the apparatus for infusing medical liquid, for example, to precisely infusing the medical liquid sequentially more than once. SUMMARY OF CERTAIN INVENTIVE ASPECTS Embodiments of the present disclosure provides an apparatus for infusing medical liquid with improved precise medical liquid infusion control characteristics. An embodiment of the present disclosure discloses an apparatus for infusing medical liquid, the apparatus including a needle module having at least one needle portion formed to be injected into a user's body; a medical liquid storage portion having an inner space to store medical liquid delivered to the needle module, wherein an inner surface of the inner space includes a surface-treated shape; and a driving portion connected to the medical liquid storage portion to transfer the medical liquid of the medical liquid storage portion to the needle module. In this embodiment, the medical liquid storage portion may include an outer portion defining one region of the inner space, the outer portion may include an outer surface and a medical liquid facing region facing the outer surface, and the surface-treated shape may be formed in the medical liquid facing region. In this embodiment, the inner surface of the inner space of the medical liquid storage portion and an outer surface of the medical liquid storage portion may be formed to have different surface shapes. In this embodiment, a roughness value of the inner surface of the inner space of the medical liquid storage portion may be different from a roughness value of the outer surface of the medical liquid storage portion. In this embodiment, the roughness value of the inner surface of the inner space of the medical liquid storage portion may be greater than the roughness value of the outer surface of the medical liquid storage portion. In this embodiment, the inner surface of the inner space of the medical liquid storage portion may be formed to include a plurality of protrusions and spaces. In this embodiment, the apparatus may further include a cover portion formed to cover the medical liquid storage portion, the needle module and the driving portion. Other aspects, features and advantages other than those described above will become apparent from the following detailed description of the drawings, claims and disclosure. An apparatus for infusing medical liquid according to the present embodiment may improve precise medical liquid infusion control characteristics. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view schematically illustrating an apparatus for infusing medical liquid according to an embodiment of the present disclosure. FIG. 2 is a schematic plan view of the apparatus for infusing medical liquid of FIG. 1. FIG. 3 is a diagram illustrating a modified example of FIG. 2. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2. FIG. 5 is an enlarged view of K of FIG. 4. FIGS. 6 to 8 are views illustrating modified examples of FIG. 5. FIG. 9 is a perspective view schematically illustrating an apparatus for infusing medical liquid according to another embodiment of the present disclosure. FIG. 10 is a schematic plan view of the apparatus for infusing medical liquid of FIG. 9. FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 10. FIG. 12 is an enlarged view of K of FIG. 11. FIG. 13 is a perspective view schematically illustrating a