Injection device for edema patient

Abstract

The utility model provides an injection device for an edema patient. The device comprises a needleless injector, a nozzle with a micropore is arranged at the front end of the needleless injector, a cavity used for containing liquid medicine is formed in the needleless injector, and the needleless injector can generate instantaneous high pressure so that the liquid medicine in the cavity can be sprayed out through the nozzle. The device further comprises a sheath which comprises a sleeve, a bottom plate, a soft cushion and a sealing film. The front end of the needleless injector is cylindrical, and the inner wall of the rear end of the sleeve is in threaded connection with the outer side of the front end of the needleless injector; a hole is formed in the middle of the bottom plate, and the inner edge of the hole is fixed to the outer edge of the front end of the needleless injector in a surrounding mode. The soft cushion is laid on the lower end face of the bottom plate and is exposed out of the hole; and the sealing film can seal the hole in a tearable manner. According to the application, a large number of injection needle holes can be prevented from being left on the skin of an affected part of a patient, and the injector can be ensured to be vertically and stably injected with liquid medicine at multiple positions.

Description

Technical Field

[0001] The present application discloses an injection device for edema patients, and relates to the field of needle-free injectors. Background Art

[0002] Edema refers to the pathological process of excessive accumulation of body fluids in tissue spaces or body cavities. Edema may be systemic or limited to a limb or part of a limb, and is commonly seen in the feet, calves, and abdomen. Edema develops slowly and may not be noticed in mild cases until it has progressed to the point where it affects body function and appearance. Some patients even experience tightness or swelling in the edematous area. Medications and pregnancy can cause edema. Edema can also be caused by diseases such as congestive heart failure, kidney disease, venous insufficiency, or cirrhosis. In particular, pretibial myxedema caused by thyroid disease, such as non-pitting edema, plaque-like edema, nodular edema, and elephantiasis-like edema, can affect the patient's appearance, make it difficult to put on clothes or shoes, cause difficulty walking, and affect the patient's quality of life.

[0003] To eliminate edema, certain diseases require multiple local injections of medication at the affected area, sometimes requiring dozens or even hundreds of injections. This leaves numerous needle holes in the patient's skin at the edema site, which not only increases pain but can also trigger fear and reduce compliance with the medication.

[0004] Currently, needle-free syringes have been gradually applied in the medical field. Their common structure consists of a cavity for containing liquid medicine, a nozzle with a micropore, and a pressurizing device capable of generating instantaneous high pressure. The liquid medicine is injected into the subcutaneous area through the nozzle under the action of high pressure, forming a high-speed, high-pressure jet. On the one hand, the inventors have not found any reports of technicians in this field using needle-free syringes for edema elimination. On the other hand, the use of a needle-free syringe with a single micropore does not reduce the number of injections required by medical staff. In addition, the needle-free syringe needs to be perpendicular to the patient's skin when used. Because some patients with edema have solid plaques, nodules, swelling, roughness, unevenness, and easy damage on the skin, the needle-free syringe may slip during use, making it impossible to effectively inject vertically. Utility Model Content

[0005] The main purpose of this application is to provide an injection device for patients with edema, which can not only avoid leaving a large number of needle holes on the patient's affected skin during injection, but also ensure that the syringe remains vertical, stable and accurately injects the drug solution at multiple points.

[0006] To this end, the present application provides an injection device for patients with edema, comprising a needle-free syringe having a nozzle with micropores at its front end and a cavity inside for containing liquid medicine. The needle-free syringe can generate instantaneous high pressure to eject the liquid medicine in the cavity through the nozzle. The injection device for patients with edema also includes a sheath, which includes a sleeve, a base plate, a cushion, and a sealing film; the front end of the needle-free syringe is cylindrical, and the rear end inner wall of the sleeve is threadedly connected to the outer front end of the needle-free syringe; a hole is opened in the middle of the base plate, and the inner edge of the hole is fixed around the outer edge of the front end of the needle-free syringe; the cushion is laid on the lower end surface of the base plate and exposes the hole; the sealing film can be torn to seal the hole.

[0007] In at least one embodiment, the soft pad is provided with two pieces and is symmetrically laid on the lower end of the bottom plate on both sides of the aforementioned hole, and there is a gap between the soft pad and the edge of the hole, as well as between the ends of the two pieces of the soft pad; the sealing film includes a circular patch and two tear strips symmetrically arranged on the edges of the patch, the patch is adhered to the edge area of ​​the hole between the two pieces of the soft pad, and the tear strip extends from the gap between the ends of the two pieces of the soft pad.

[0008] In at least one embodiment, the nozzle is provided with a plurality of micro-holes for spraying the liquid medicine.

[0009] The injection device for edema patients provided by the present application can at least achieve the following beneficial effects: 1. Replace the traditional syringe with a needle-free syringe to avoid leaving a large number of obvious needle holes on the skin of the patient's edema, reduce the patient's pain and fear, and improve the patient's compliance with the injection of the drug solution; 2. The nozzle of the needle-free syringe can adopt a structure with multiple micropores, which can simultaneously perform multi-point injection of drugs at multiple locations with a certain distance between the affected area, reducing the workload of medical staff and improving work efficiency; 3. The sheath of the present application is used to protect the front end of the syringe before use, and can be used as a guide device during injection, which can ensure that the needle-free syringe injects the drug in a vertical or near-vertical direction to avoid slipping and ensure that the drug can be effectively injected into the patient's subcutaneous tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0011] Figure 1 A perspective view of an injection device for edema patients shown in an embodiment of the present application;

[0012] Figure 2 A perspective view of a needle-free syringe according to one embodiment;

[0013] Figure 3 A schematic structural diagram of a nozzle according to another embodiment;

[0014] Figure 4 A three-dimensional diagram of a sheath according to an embodiment of the present application;

[0015] Figure 5 for Figure 4 Cross-sectional view of the middle sheath.

[0016] The numbers in the figure are: 100, needle-free syringe; 110, nozzle; 120, slide; 130, indicator strip; 200, sheath; 210, sleeve; 211, convex strip; 212, convex head; 220, bottom plate; 221, hole; 230, cushion; 240, sealing film; 241, patch; 242, tear strip. DETAILED DESCRIPTION

[0017] The present application will be described in detail below with reference to the exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concepts of the present application to those skilled in the art.

[0018] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0019] like Figures 1 to 5 As shown, in some embodiments of the present application, the injection device for edema patients includes a needle-free syringe 100, which has a nozzle 110 with a micro-pore at its front end and a cavity inside for containing liquid medicine. The needle-free syringe 100 can generate instantaneous high pressure to eject the liquid medicine in the cavity through the nozzle 110. The injection device for edema patients also includes a sheath 200, which includes a sleeve 210, a bottom plate 220, a cushion 230 and a sealing film 240. The front end of the needle-free syringe 100 is cylindrical, and the rear end inner wall of the sleeve 210 is threadedly connected to the front outer side of the needle-free syringe 100. A hole 221 is opened in the middle of the bottom plate 220, and the inner edge of the hole 221 is fixed around the front outer edge of the needle-free syringe 100. The cushion 230 is laid on the lower end surface of the bottom plate 220 and exposes the hole 221. The sealing film 240 can tear and seal the hole 221.

[0020] The sleeve 210 and the bottom plate 220 may be made of transparent plastic for easy observation, and the cushion 230 may be made of silicone for improved comfort.

[0021] The specific structure and working principle of the needle-free syringe 100 are all prior art in this field and will not be described in detail in this application. The nozzle 110 of the most common needle-free syringe 100 is as follows: Figure 2 As shown, it is a single micropore structure. For patients with edema, the inventor believes that the nozzle 110 can be provided with multiple micropores for spraying liquid medicine, and its structure is as follows Figure 3 As shown; the spacing between the micropores can be maintained at 1 to 2 cm, and the number of micropores can be set to 4 to 5, so that the purpose of multi-point drug injection can be achieved, but a larger nozzle 110 is also required.

[0022] In an optional embodiment, the soft cushion 230 comprises two pieces, symmetrically arranged at the lower ends of the base plate 220 on either side of the aforementioned hole 221. A gap is left between the soft cushion 230 and the edge of the hole 221, as well as between the ends of the two soft cushions 230. The sealing film 240 includes a circular patch 241 and two tear strips 242 symmetrically arranged at the edges of the patch 241. The patch 241 is affixed to the edge of the hole 221 between the two soft cushions 230, and the tear strips 242 extend from the gap between the ends of the two soft cushions 230. This structure prevents the adhesive left by the tear strips 242 from contacting the patient's skin, thereby improving comfort.

[0023] In an optional embodiment, the front end of the needle-free syringe 100 is provided with an external thread, the outer diameter of the external thread portion is larger than the outer diameter of the front end portion of other needle-free syringes 100, and the external thread portion is also provided with two slide grooves 120 parallel to the axial direction, and two indicator bars 130 are provided on the outside of the front half of the needle-free syringe 100, and the length directions of the two indicator bars 130 are respectively consistent with the groove directions of the two slide grooves 120; the front end of the inner wall of the sleeve 210 is provided with two ridges 211 parallel to the axial direction, and the rear end edge is provided with two protrusions 212, the protruding directions of the two protrusions 212 are respectively consistent with the length directions of the two protrusions 211, and the protrusions 211 can slide along the slide groove 120 after the external thread and the internal thread fall off.

[0024] During use, the sealing film 240 is torn off, the sleeve 210 is unscrewed, and the liquid medicine is extracted from the nozzle 110 (or the liquid medicine is already contained therein, or the liquid medicine is injected from other locations). The sleeve 210 is then screwed back into the front end of the needle-free syringe 100 and continued to be rotated until the internal and external threads are disengaged. The protrusion 212 and the indicator bar 130 are then aligned with each other to ensure that the protrusion 211 can slide along the slide groove 120. Finally, the sleeve 210 is placed on the patient's skin and the entire needle-free syringe 100 is slid downward to ensure that it does not slip easily and maintains a relatively vertical direction. Finally, the medicine is injected through the needle-free syringe 100. Obviously, the sheath 200 can be used as a disposable consumable to ensure hygiene and safety.

[0025] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above based on the concept of this application should be within the scope of protection of this application.

Claims

1. An injection device for edema patients, comprising a needle-free syringe (100), a nozzle (110) with a micro-hole at the front end thereof, and a cavity inside thereof for receiving a liquid medicine. The needle-free syringe (100) can generate instantaneous high pressure so that the liquid medicine in the cavity is ejected through the nozzle (110), and is characterized in that: The invention also includes a protective sleeve (200), which includes a sleeve (210), a bottom plate (220), a cushion (230) and a sealing film (240); the front end of the needle-free syringe (100) is cylindrical, and the rear end inner wall of the sleeve (210) is threadedly connected to the outer side of the front end of the needle-free syringe (100); a hole (221) is opened in the middle of the bottom plate (220), and the inner edge of the hole (221) is fixed around the outer edge of the front end of the needle-free syringe (100); the cushion (230) is laid on the lower end surface of the bottom plate (220) and exposes the hole (221); the sealing film (240) can be torn to seal the hole (221).

2. The injection device for edema patients according to claim 1, characterized in that: The soft pad (230) is provided with two pieces and symmetrically laid on the lower end of the bottom plate (220) on both sides of the aforementioned hole (221), and there is a gap between the soft pad (230) and the edge of the hole (221), as well as between the ends of the two pieces of the soft pad (230); the sealing film (240) includes a circular patch (241) and two tear strips (242) symmetrically arranged on the edges of the patch (241), the patch (241) is adhered to the edge area of ​​the hole (221) between the two pieces of the soft pad (230), and the tear strip (242) extends from the gap between the ends of the two pieces of the soft pad (230).

3. The injection device for edema patients according to claim 1, characterized in that: The front end of the needle-free syringe (100) is provided with an external thread, the outer diameter of the external thread portion is larger than the outer diameter of the front end portion of other needle-free syringes (100), and the external thread portion is also provided with two slide grooves (120) parallel to the axial direction. Two indicator strips (130) are provided on the outer side of the front half of the needle-free syringe (100), and the length directions of the two indicator strips (130) are respectively consistent with the groove directions of the two slide grooves (120); the front end of the inner wall of the sleeve (210) is provided with two convex strips (211) parallel to the axial direction, and the rear end edge is provided with two protrusions (212), the protrusion directions of the two protrusions (212) are respectively consistent with the length directions of the two protrusions (211), and the protrusions (211) can slide along the slide groove (120) after the external thread and the internal thread fall off.

4. The injection device for edema patients according to claim 1, characterized in that: The nozzle (110) is provided with a plurality of micro-holes for spraying liquid medicine.

5. The injection device for edema patients according to claim 1, characterized in that: The sleeve (210) and the bottom plate (220) are both made of transparent plastic.

6. The injection device for edema patients according to claim 1, characterized in that: The material of the soft pad (230) is silica gel.

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