CN221014171U - An adjustable drug delivery device - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, in particular to an adjustable drug feeder. The technical scheme includes that the medicine feeder comprises a needle tube, a piston arranged in the needle tube and a pushing handle for driving the piston to linearly move along the axial direction of the needle tube; a connecting tube head is detachably arranged at the tube orifice of the needle tube, the other end of the connecting tube head is provided with an elastic bending tube, and the other end of the bending tube is provided with an injection needle; the device also comprises an adjusting structure arranged on the surface of the needle tube, wherein the adjusting structure is used for adjusting the bending angle of the bending tube so as to adjust the administration angle. According to the utility model, the space between the bending tube and the needle tube is adjusted through the adjusting structure, so that the bending tube can rebound under the elastic action of the bending tube, the bending angle of the bending tube is adjusted, the administration angle is adjusted, quantitative liquid medicine can be pumped in, and quantitative medicine injection is realized.

Description

An adjustable drug delivery device

Technical Field

The utility model relates to the technical field of medical devices, in particular to an adjustable drug delivery device.

Background technique

Oral ulcers, commonly known as "mouth sores", are a common ulcerative injury disease occurring in the oral mucosa. They are more common in the inner side of the lips, tongue, tongue ventral side, buccal mucosa, vestibule groove, soft palate and other parts. The mucosa in these parts lacks a keratinized layer or has poor keratinization. Oral ulcers require the use of a drug applicator for medication treatment.

Due to the limited space in the oral cavity, the drug cannot reach the ulcer site accurately in some cases. Traditional drug delivery devices are usually not bendable. Therefore, we propose an adjustable drug delivery device to solve the above problems.

Utility Model Content

In view of the problems existing in the background technology, the utility model provides an adjustable drug delivery device which can adjust the angle during injection.

The technical solution of the utility model is: an adjustable drug delivery device, which comprises a needle tube, a piston arranged in the needle tube, and a push handle for driving the piston to move linearly along the axis direction of the needle tube;

A connecting tube head is detachably mounted at the tube mouth of the needle tube, and an elastic bending tube is arranged at the other end of the connecting tube head, and an injection needle is arranged at the other end of the bending tube;

It also includes an adjustment structure installed on the surface of the needle tube, and the adjustment structure is used to adjust the bending angle of the bending tube to adjust the medication angle.

Preferably, the adjustment structure comprises a threaded rod fixed to the side of the needle tube, a threaded sleeve is threadedly mounted on the threaded rod, and a pull rope is hingedly connected to the other end of the threaded sleeve;

It also includes a connecting tube sleeve fixedly sleeved on the end of the bending tube close to the injection needle, and the other end of the pull rope is rotatably connected to the connecting tube sleeve.

Preferably, the outer circumferential surface of the threaded sleeve is processed with anti-slip patterns.

Preferably, a limiting tube movable along the axial direction of the needle tube is provided in the needle tube;

The limiting tube is detachably mounted in the needle tube and can limit the moving distance of the piston in the needle tube.

Preferably, the needle tube is processed with threads near the tube mouth, and the outer circumferential surface of the limit tube has a thread groove matching the threads;

When the limiting tube rotates, it can move along the axial direction of the needle tube under the cooperation of the thread and the thread groove.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model adjusts the distance between the bending tube and the needle tube through the adjusting structure, so that the bending tube can rebound under the action of its own elasticity, thereby adjusting the bending angle of the bending tube and further adjusting the medication angle.

By rotating the limiting tube, the position of the end of the limiting tube in the needle tube is adjusted, and the movement position of the piston can be limited when the drug is drawn into the drug dispenser, so as to draw in a certain amount of drug solution and then achieve quantitative injection.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the utility model;

FIG2 shows a schematic diagram of the internal structure of the needle tube in the utility model;

Figure numerals: 10 applicator; 11 needle tube; 12 push handle; 13 limit tube; 131 threaded groove; 14 connecting tube head; 15 bending tube; 16 injection needle; 17 piston; 20 adjustment structure; 21 connecting tube sleeve; 22 pull rope; 23 threaded sleeve; 24 threaded rod.

Implementation

The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "cross", "inside", "outside", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Example

As shown in FIG. 1 and FIG. 2 , the utility model provides an adjustable drug delivery device 10, which includes a needle tube 11, a piston 17 disposed in the needle tube 11, and a push handle 12 for driving the piston 17 to move linearly along the axis direction of the needle tube 11;

A connecting tube head 14 is detachably mounted at the tube mouth of the needle tube 11, and an elastic bending tube 15 is arranged at the other end of the connecting tube head 14. In this embodiment, the bending tube 15 is made of a transparent soft polyvinyl chloride material, which is elastic and non-toxic. An injection needle 16 is arranged at the other end of the bending tube 15;

It also includes an adjustment structure 20 installed on the surface of the needle tube 11, and the adjustment structure 20 is used to adjust the bending angle of the bending tube 15 to adjust the medication angle.

Specifically, the spacing between the bending tube 15 and the needle tube 11 is adjusted by the adjustment structure 20, so that the bending tube 15 can rebound under its own elasticity, thereby adjusting the bending angle of the bending tube 15 and further adjusting the medication angle.

The adjustment structure 20 includes a threaded rod 24 fixed to the side of the needle tube 11, a threaded sleeve 23 is threadedly mounted on the threaded rod 24, and a pull rope 22 is hinged at the other end of the threaded sleeve 23;

The connecting tube sleeve 21 is fixedly sleeved on the end of the bending tube 15 close to the injection needle 16 , and the other end of the pull rope 22 is rotatably connected to the connecting tube sleeve 21 .

The outer circumferential surface of the threaded sleeve 23 is processed with anti-skid patterns, which make it easier to rotate the threaded sleeve 23.

The threaded sleeve 23 is rotated to increase the overall length of the threaded sleeve 23 and the threaded rod 24 , and the bending tube 15 can rebound under the elastic effect to achieve angle adjustment.

A limiting tube 13 is arranged inside the needle tube 11 and can move along the axial direction of the needle tube 11;

The limiting tube 13 is detachably installed in the needle tube 11 and can limit the moving distance of the piston 17 in the needle tube 11 .

In this embodiment, the needle tube 11 is processed with threads near the tube mouth, and the outer circumferential surface of the limiting tube 13 has a thread groove 131 that matches the thread;

When the limiting tube 13 rotates, it can move along the axial direction of the needle tube 11 under the cooperation of the thread and the thread groove.

By rotating the limiting tube 13, the position of the end of the limiting tube 13 in the needle tube 11 is adjusted, and the movement position of the piston 17 can be limited when the drug delivery device 10 draws in the drug solution, so as to draw in a certain amount of drug solution and then achieve quantitative injection.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" 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, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention are understood according to specific circumstances.

The above specific embodiments are only one or several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims (5)

1. An adjustable drug delivery device (10), the drug delivery device (10) comprising a needle tube (11), a piston (17) disposed in the needle tube (11), and a push handle (12) for driving the piston (17) to move linearly along the axis direction of the needle tube (11); It is characterized by: A connecting tube head (14) is detachably mounted at the tube mouth of the needle tube (11); the other end of the connecting tube head (14) is provided with an elastic bending tube (15); and the other end of the bending tube (15) is provided with an injection needle (16); It also includes an adjustment structure (20) mounted on the surface of the needle tube (11), wherein the adjustment structure (20) is used to adjust the bending angle of the bending tube (15) and thus adjust the drug administration angle. 2. An adjustable drug delivery device (10) according to claim 1, characterized in that the adjustment structure (20) comprises a threaded rod (24) fixed to the side of the needle tube (11), a threaded sleeve (23) is threadedly mounted on the threaded rod (24), and a pull rope (22) is hinged at the other end of the threaded sleeve (23); It also comprises a connecting tube sleeve (21) fixedly sleeved on an end portion of the bending tube (15) close to the injection needle (16), and the other end of the pull rope (22) is rotatably connected to the connecting tube sleeve (21). 3. An adjustable drug delivery device (10) according to claim 2, characterized in that the outer circumferential surface of the threaded sleeve (23) is processed with anti-slip grooves. 4. An adjustable drug delivery device (10) according to claim 1, characterized in that a limiting tube (13) movable along the axial direction of the needle tube (11) is arranged inside the needle tube (11); The limiting tube (13) is detachably mounted in the needle tube (11) and can limit the moving distance of the piston (17) in the needle tube (11). 5. An adjustable drug delivery device (10) according to claim 4, characterized in that a thread is processed in the needle tube (11) near the tube mouth, and the outer circumferential surface of the limiting tube (13) has a thread groove (131) matching the thread; When the limiting tube (13) rotates, it can move along the axial direction of the needle tube (11) under the cooperation of the thread and the thread groove.