Improved implantable drug delivery device

Abstract

The utility model belongs to the field of medical instruments, and discloses an improved implantable drug delivery device which comprises a needle wing. A medicine conveying pipe is fixed to the needle wing, one end of the medicine conveying pipe is connected with a needle body, and the end, away from the medicine conveying pipe, of the needle body is vertically placed downwards. The two ends of the lower end face of the skin pad are connected with adhesive layers, and the lower end of the needle body extends to the lower end of the plane where the adhesive layers are located. The upper end face of the skin pad is fixedly connected with a bottom plate, a supporting plate is arranged above the bottom plate, the bottom plate is provided with an adjusting unit connected with the supporting plate, the adjusting unit is used for driving the supporting plate to ascend and descend, and the supporting plate is provided with a clamping part used for clamping a needle wing; according to the needle wing clamping device, the supporting plate and the clamping part can be driven to ascend and descend through the adjusting unit, so that the position of the clamping part can be adjusted according to the distance between the needle wing and the skin of a patient, and the needle wing clamping device is suitable for clamping and fixing the needle wing under various conditions that the puncture depth of a needle body is different.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and in particular relates to an improved implantable drug delivery device. Background Art

[0002] Intravenous drug administration through an infusion port typically requires a butterfly needle to directly puncture the port base. However, due to the length of the butterfly needle, most patients will have a large portion of the needle exposed when using it, so the wings of the butterfly needle need to be fixed. To facilitate the fixation of the needle wings, the existing technology generally uses a Sile buckle or other methods to fix the needle wings. For example, Chinese patent application number CN202220318085.8 provides a butterfly needle fixation device and an infusion port needle, wherein the butterfly needle fixation device includes: two fixing seats, each having a butterfly fixing cavity, a movable block within the butterfly fixing cavity, and a positioning column on the movable block; two soft pads, respectively disposed at the bottom of the two fixing seats, each having an adhesive layer at the bottom. Compared with the existing technology, the utility model can effectively fix the needle after the needle is inserted in patients with contact dermatitis, preventing the recurrence of contact dermatitis or reducing its severity.

[0003] However, due to the different fatness and thinness of patients, the depth to which the needle body needs to be inserted also varies, that is, the distance between the needle wing and the patient's skin after the insertion is completed also varies. Although the above patent can fix the butterfly wing, after the fixing device is pasted on the patient's skin, the distance between the butterfly wing fixing cavity and the patient's skin cannot be adjusted; therefore, there is a problem in the existing technology that it is unable to fix the needle wing under different insertion depths. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an improved implantable drug delivery device, which solves the problem in the existing technology that the needle wings cannot be fixed under different insertion depths.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] Improved implantable drug delivery device, including needle wings;

[0007] A drug delivery tube is fixed on the needle wing, one end of the drug delivery tube is connected to the needle body, and the needle body is placed vertically downward away from the end of the drug delivery tube;

[0008] A skin pad is provided under the needle wing, both ends of the lower end surface of the skin pad are connected to an adhesive layer, and the lower end of the needle body extends to the lower end of the plane where the adhesive layer is located;

[0009] The upper end surface of the skin pad is fixedly connected to a base plate, a support plate is provided above the base plate, an adjustment unit connected to the support plate is provided on the base plate, the adjustment unit is used to drive the support plate to move up and down, and a clamping portion for clamping the needle wing is provided on the support plate.

[0010] The principles and effects of the above technical solution are as follows:

[0011] The support plate and the clamping part can be driven to move up and down by the adjustment unit, so that the position of the clamping part can be adjusted according to the distance between the needle wing and the patient's skin, so as to be suitable for clamping and fixing the needle wing in various situations with different needle insertion depths.

[0012] The adjustment unit includes a vertically placed screw and a slide rod, the lower end of the screw rod is rotatably connected to the base plate, the lower end of the slide rod is fixedly connected to the base plate, and a pair of ear plates are fixedly connected to the support plate, one ear plate is sleeved on the screw rod and threadedly connected to the screw rod, and the other ear plate is slidably sleeved on the slide rod;

[0013] The upper surface of the support plate is provided with a placement slot for placing the needle wing;

[0014] The clamping portion includes a pair of cover plates placed on the upper end of the support plate, and the two cover plates respectively cover the two ends of the placement slot, and the ends of the two cover plates away from each other are fixed with a rotating shaft, the central axis of the rotating shaft is placed parallel to the support plate, and the rotating shaft is rotatably connected to the support plate;

[0015] A pair of magnet strips are fixed to the upper end of the support plate corresponding to any end of the cover plate. A pair of grooves for accommodating the magnet strips are opened on the cover plate. When the lower end of the cover plate is in contact with the upper end of the support plate, the two magnet strips at either end of the support plate are respectively placed in the two grooves of the corresponding cover plate. The cover plates are made of ferromagnetic material.

[0016] A Velcro velvet patch and a Velcro hook patch are provided between the adhesive layer and the skin pad. The Velcro velvet patch is fixed to the lower end surface of the skin pad. The Velcro hook patches are adhered to the lower ends of the corresponding Velcro velvet patches. The adhesive layer is fixed to the lower ends of the corresponding Velcro hook patches.

[0017] The adjustment unit also includes a connecting piece, one end of which is fixedly connected to the base plate, and the other end of which is rotatably connected to the upper end of the screw rod;

[0018] The upper end of the screw rod is fixedly connected with a turning handle, which is located at the upper end of the connecting piece.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] Fixed connection: refers to the process of connecting two separate profiles or parts into a complex part or component using fasteners such as screws, bolts and rivets.

[0021] Threaded connection: refers to the connection and fixation between objects through the mutual engagement of threads.

[0022] Beneficial effects of the utility model:

[0023] 1. Due to the different fatness and thinness of patients, the depth of needle insertion also varies, that is, the distance between the needle wing and the patient's skin after insertion also varies. In this case, the support plate and the clamping part can be driven to move up and down by the adjustment unit, so that the position of the clamping part can be adjusted according to the distance between the needle wing and the patient's skin, so as to be suitable for clamping and fixing the needle wing in various situations with different needle insertion depths;

[0024] 2. Through the coordinated arrangement of the screw, slide bar, ear plate, connector and handle, the handle can be rotated to drive the support plate to move up and down;

[0025] 3. Through the coordinated setting of the Velcro suede sticker and the Velcro hook sticker, after each use, the Velcro hook sticker can be torn off from the corresponding Velcro suede sticker and replaced with a Velcro hook sticker with a new adhesive layer, thereby facilitating the replacement of the adhesive sticker. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the overall structure of the utility model from different viewing angles;

[0029] Figure 3 This is a partial structural diagram of the adhesive layer of the utility model;

[0030] Figure 4 This is a partial structural diagram of the support plate of the utility model;

[0031] Figure 5 It is a partial structural diagram of the rotating shaft of the utility model. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Combined here Figures 1 to 5 An embodiment of an improved implantable drug delivery device will be described. Specifically, the improved implantable drug delivery device is constructed as a split structure, comprising a needle wing 100, a drug delivery tube 101, a needle body 102, an adhesive layer 200, a base plate 400, a support plate 500, an adjustment unit, and a clamping portion. The adjustment unit can be used to drive the support plate 500 and the clamping portion to move up and down, thereby adjusting the position of the clamping portion according to the distance between the needle wing 100 and the patient's skin. This allows for the clamping and fixing of the needle wing 100 to accommodate various conditions with varying needle body 102 insertion depths.

[0034] Please refer to Figures 1 to 5 , an improved implantable drug delivery device, comprising a needle wing 100;

[0035] A drug delivery tube 101 is fixed to the needle wing 100, one end of the drug delivery tube 101 is connected to a needle body 102, and the needle body 102 is placed vertically downward away from the end of the drug delivery tube 101;

[0036] A skin pad 200 is provided below the needle wing 100. Both ends of the lower end surface of the skin pad 200 are connected to an adhesive layer 300. The lower end of the needle body 102 extends to the lower end of the plane where the adhesive layer 300 is located.

[0037] The upper end surface of the skin pad 200 is fixedly connected to a base plate 400, and a support plate 500 is provided above the base plate 400. An adjustment unit connected to the support plate 500 is provided on the base plate 400. The adjustment unit is used to drive the support plate 500 to move up and down. The support plate 500 is provided with a clamping portion for clamping the needle wing 100;

[0038] Preferably, the needle body 102 is generally made of materials such as stainless steel or medical glass to ensure its strength and corrosion resistance. The surface of the needle body 102 can be polished to reduce friction during insertion.

[0039] Preferably, the skin pad 200 is usually made of materials such as silicone or medical rubber, so that the skin pad 200 can effectively fit the skin and provide a comfortable wearing experience.

[0040] Preferably, the lower end surface of the adhesive layer 300 is covered with a dustproof film. When in use, the dustproof film is torn off and the adhesive layer 300 can be adhered and fixed to the patient's skin.

[0041] During use, the needle body 102 is vertically inserted into the patient's skin, and then the skin pad 200 is fixed to the patient's skin through the adhesive layer 300, and the needle wing 100 is clamped and fixed by the clamping part; however, due to the different fatness and thinness of the patients, the penetration depth of the needle body 102 is also different, so the distance between the needle wing 100 and the patient's skin after the penetration is completed is also different. At this time, the support plate 500 and the clamping part can be driven to move up and down by the adjustment unit, so that the position of the clamping part can be adjusted according to the distance between the needle wing 100 and the patient's skin, so as to be suitable for clamping and fixing the needle wing 100 in various situations with different penetration depths of the needle body 102.

[0042] In order to facilitate the lifting and lowering adjustment of the support plate 500, the adjustment unit includes a vertically placed screw 601 and a slide rod 602. The lower end of the screw 601 is rotatably connected to the base plate 400, and the lower end of the slide rod 602 is fixedly connected to the base plate 400. A pair of ear plates 603 are fixedly connected to the support plate 500. One ear plate 603 is sleeved on the screw 601 and threadedly connected to the screw 601, and the other ear plate 603 is slidably sleeved on the slide rod 602; when the screw 601 is rotated, the screw 601 can carry the corresponding ear plate 603 for threaded transmission, thereby driving the support plate 500 and the clamping part to be lifted and moved for adjustment.

[0043] The upper end surface of the support plate 500 is provided with a placement groove 501 for placing the needle wing 100;

[0044] The clamping portion includes a pair of cover plates 701 placed on the upper end of the support plate 500, and the two cover plates 701 respectively cover the two ends of the placement groove 501, and the ends of the two cover plates 701 away from each other are fixed with rotating shafts 702, and the central axes of the rotating shafts 702 are placed parallel to the support plate 500, and the rotating shafts 702 are rotatably connected to the support plate 500; after the needle wing 100 is placed in the placement groove 501, the two cover plates 701 are rotated around the rotating shafts 702 so that the lower end surfaces of the two cover plates 701 are rotated to fit the upper end surface of the support plate 500, and the two cover plates 701 respectively cover the two ends of the placement groove 501, so as to limit and fix the needle wing 100.

[0045] In order to improve the stability of the needle wing 100 and prevent the cover 701 from moving and opening, a pair of magnet strips 703 are fixed to the upper end surface of the support plate 500 corresponding to either end of the cover plate 701, and a pair of grooves 7011 are provided on the cover plate 701 for placing the magnet strips 703. When the lower end surface of the cover plate 701 is in contact with the upper end surface of the support plate 500, the two magnet strips 703 at either end of the support plate 500 are respectively placed in the two grooves 7011 of the corresponding cover plate 701, and the cover plate 701 is made of ferromagnetic material; through the cooperation between the magnet strips 703 and the ferromagnetic cover plate 701, the stability of the cover plate 701 covering the support plate 500 is improved, and the stability of the fixed limitation of the needle wing 100 is improved.

[0046] Preferably, the arrangement of the magnet strip 703 and the ferromagnetic cover plate 701 is only an optional way of detachably connecting the cover plate 701 and the support plate 500 in the present application. The cover plate 701 and the support plate 500 in the present application can also be detachably connected by a snap-fit ​​method.

[0047] Velcro velvet patch 801 and Velcro hook patch 802 are provided between the adhesive layer 300 and the skin pad 200. The Velcro velvet patch 801 is fixed on the lower end surface of the skin pad 200, and the Velcro hook patch 802 is adhered to the lower end of the corresponding Velcro velvet patch 801. The adhesive layer 300 is fixed to the lower end surface of the corresponding Velcro hook patch 802. After each use, the adhesive effect of the adhesive layer 300 will be weakened after contact with the patient's sweat. At this time, the Velcro hook patch 802 can be torn off from the corresponding Velcro velvet patch 801, and replaced with a Velcro hook patch 802 with a new adhesive layer 300, so as to facilitate the replacement of the adhesive layer.

[0048] The adjustment unit also includes a connecting member 604, one end of which is fixedly connected to the base plate 400, and the other end of the connecting member 604 is rotatably connected to the upper end of the screw 601; the design of the connecting member 604 can improve the stability of the screw 601 during rotation.

[0049] In order to facilitate the rotation of the screw 601, the upper end of the screw 601 is fixedly connected to a handle 605, which is located at the upper end of the connecting piece 604; preferably, anti-slip grooves are provided on the peripheral wall of the handle 605 to facilitate the rotation of the screw 601 by twisting the handle 605.

[0050] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention.

Claims

1. An improved implantable drug delivery device, comprising a needle wing (100), characterized in that: A drug delivery tube (101) is fixed on the needle wing (100), one end of the drug delivery tube (101) is connected to a needle body (102), and the needle body (102) is placed vertically downward away from the end of the drug delivery tube (101); A skin pad (200) is provided below the needle wing (100), both ends of the lower end surface of the skin pad (200) are connected to an adhesive layer (300), and the lower end of the needle body (102) extends to the lower end of the plane where the adhesive layer (300) is located; The upper end surface of the skin pad (200) is fixedly connected to a base plate (400), a support plate (500) is provided above the base plate (400), an adjustment unit connected to the support plate (500) is provided on the base plate (400), the adjustment unit is used to drive the support plate (500) to move up and down, and a clamping portion for clamping the needle wing (100) is provided on the support plate (500).

2. The improved implantable drug delivery device according to claim 1, characterized in that: The adjusting unit includes a vertically placed screw rod (601) and a sliding rod (602), wherein the lower end of the screw rod (601) is rotatably connected to the base plate (400), and the lower end of the sliding rod (602) is fixedly connected to the base plate (400). A pair of ear plates (603) are fixedly connected to the supporting plate (500), wherein one ear plate (603) is sleeved on the screw rod (601) and threadedly connected to the screw rod (601), and the other ear plate (603) is slidably sleeved on the sliding rod (602).

3. The improved implantable drug delivery device according to claim 2, characterized in that: The upper end surface of the supporting plate (500) is provided with a placement groove (501) for placing the needle wing (100); The clamping portion includes a pair of cover plates (701) placed on the upper end of the support plate (500), and the two cover plates (701) respectively cover the two ends of the placement groove (501). The ends of the two cover plates (701) away from each other are fixed with a rotating shaft (702), the central axis of the rotating shaft (702) is placed parallel to the support plate (500), and the rotating shaft (702) is rotatably connected to the support plate (500).

4. The improved implantable drug delivery device according to claim 3, characterized in that: A pair of magnet bars (703) are fixed to the upper end surface of the support plate (500) corresponding to the end of any cover plate (701), and a pair of grooves (7011) for accommodating the magnet bars (703) are provided on the cover plate (701). When the lower end surface of the cover plate (701) is in contact with the upper end surface of the support plate (500), the two magnet bars (703) at either end of the support plate (500) are respectively placed in the two grooves (7011) of the corresponding cover plate (701), and the cover plate (701) is made of ferromagnetic material.

5. The improved implantable drug delivery device according to claim 4, characterized in that: A Velcro velvet patch (801) and a Velcro hook patch (802) are provided between the adhesive layer (300) and the skin pad (200); the Velcro velvet patch (801) is fixed on the lower end surface of the skin pad (200); the Velcro hook patches (802) are adhered to the lower ends of the corresponding Velcro velvet patches (801); and the adhesive layer (300) is fixed on the lower end surfaces of the corresponding Velcro hook patches (802).

6. The improved implantable drug delivery device according to claim 5, characterized in that: The adjustment unit further comprises a connecting member (604), one end of the connecting member (604) is fixedly connected to the bottom plate (400), and the other end of the connecting member (604) is rotatably connected to the upper end of the screw rod (601).

7. The improved implantable drug delivery device according to claim 6, characterized in that: The upper end of the screw rod (601) is fixedly connected with a turning handle (605), and the turning handle (605) is located at the upper end of the connecting member (604).

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