CN219398517U - Drug administration device - Google Patents

Abstract

The utility model discloses a medicine feeder, which relates to the technical field of medical appliances, and comprises a needle cylinder and a piston, wherein a push rod is rotationally connected to the piston, one end of the needle cylinder is provided with a cylinder cover, a special-shaped hole is formed in the cylinder cover, a plurality of special-shaped plates are slidingly connected to the push rod, and a locking mechanism is arranged between each special-shaped plate and the push rod; the shape of the irregular plate is consistent with that of the irregular hole, an alignment station and a blocking station are arranged in the process that the push rod rotates relative to the needle cylinder, and the irregular plate is completely aligned with the irregular hole in the alignment station, so that the irregular plate can pass through the irregular hole; at the blocking station, the profiled plate is staggered with the profiled hole so that the cylinder cover blocks the profiled plate. Through sliding being provided with a plurality of abnormal plates on the push rod, set up the dysmorphism hole on the cover, can be blocked by the cover when the push rod drives the abnormal plate and pass the dysmorphism hole, rotate the push rod and make each abnormal plate pass the dysmorphism hole in proper order, realize many times ration and administer, adjust each abnormal plate position and by locking mechanism locking, can realize adjusting the dose of dosing.

Description

Drug administration device

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a drug feeder.

Background

The medicine feeder is one widely used in medical treatment and other fields, and has the principle that liquid is sucked into the syringe and then exhausted via the luer head, the measuring ruler is set on the outer wall of the syringe of conventional syringe, and the medical staff determines the injection amount via the measuring ruler and pushes the piston with the piston handle on the piston rod to make the medicine liquid enter into human body via the needle.

The quantitative drug feeder comprises a needle cylinder and a push rod matched with the needle cylinder, wherein the front end of the needle cylinder is provided with an injection needle mounting seat, the rear end of the needle cylinder is provided with a finger ring, the front end of the push rod is provided with a rubber plug mounting part, the rear end of the push rod is provided with a pushing part, the push rod is provided with a limiting part, an elastic clamp is clamped and matched with the limiting part, the drug quantity to be fed according to the requirement is arranged on the push rod, the elastic clamp is clamped on the limiting part of the push rod, when the push rod is pushed to push the drug, the extruded drug quantity reaches the set drug quantity, the elastic clamp is abutted on the finger ring at the rear end of the needle cylinder, the first drug feeding is completed, the elastic clamp is taken down, the push rod is pushed continuously, and the drug can be injected in batches.

In the device of the above patent, the purpose is to dose the dose, through being provided with the detachable elastic member that cooperates with annular groove centre gripping on the annular groove, through elastic member and cylinder butt, the elastic member restriction push rod continues to promote, and it has reached quantitative effect, makes the dose of dosing the first time the same, but current doser can not adjust the dose of dosing the first time, also can not multiple ration dosing.

Disclosure of Invention

The object of the present utility model is to provide a drug dispenser which solves the above-mentioned drawbacks of the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a medicine feeder, includes the cylinder and slides the piston that sets up in the cylinder, rotate on the piston and be connected with the push rod, the one end that the piston was kept away from to the push rod is fixedly connected with bulldozes the board, the one end fixedly connected with atress board of cylinder, the cylinder is located the one end of atress board and is provided with the cover, has seted up the dysmorphism hole on the cover, the push rod activity is passed the dysmorphism hole, is provided with a plurality of sketch boards along length direction sliding connection on the push rod, is provided with locking mechanism between every sketch board and the push rod respectively; the shape of the irregular plate is consistent with that of the irregular hole, an alignment station and a blocking station are arranged in the process that the push rod rotates relative to the needle cylinder, and the irregular plate is completely aligned with the irregular hole in the alignment station, so that the irregular plate can pass through the irregular hole; at the blocking station, the profiled plate is staggered with the profiled hole so that the cylinder cover blocks the profiled plate.

Further, the sliding blocks are fixedly connected to the profiled plates, a plurality of sliding grooves matched with the sliding blocks are formed in the push rods, and the profiled plates are slidably connected into the sliding grooves through the sliding blocks.

Further, the novel push rod comprises a locking mechanism, wherein the locking mechanism is a bolt, threaded holes are formed in each irregular plate in a penetrating mode, the bolt is in threaded connection with the irregular plate through the threaded holes, and the end portion of the bolt is in butt fit with the peripheral side face of the push rod.

Further, the push rod is fixedly connected with a connecting part at one end where the piston is located, and the piston is sleeved on the connecting part.

The connecting part comprises a connecting column fixedly connected to the end face of the push rod, and a limiting head is fixedly connected to the connecting column.

Further, one end of the needle cylinder far away from the cylinder cover is communicated with a needle seat.

Compared with the prior art, the drug feeder provided by the utility model has the advantages that the plurality of special-shaped plates are arranged on the push rod in a sliding manner, the special-shaped holes are formed in the cylinder cover, the push rod drives the special-shaped plates to pass through the special-shaped holes and then be blocked by the cylinder cover, the push rod is rotated to enable the special-shaped plates to be sequentially positioned at the alignment station and pass through the special-shaped holes, multiple quantitative drug feeding can be realized, and the dosage of multiple quantitative drug feeding can be regulated by regulating the positions of the special-shaped plates and locking the special-shaped plates by the locking mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

fig. 2 is a schematic view of a syringe structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a push rod according to an embodiment of the present utility model;

FIG. 4 is an enlarged view at A provided by an embodiment of the present utility model;

fig. 5 is a cross-sectional view of a connecting portion and a piston according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a needle cylinder; 11. needle seat; 12. a finger ring; 13. a cylinder cover; 131. a special-shaped hole; 2. a push rod; 21. a push plate; 22. a connection part; 221. a connecting column; 222. a positioning head; 3. a shaped plate; 4. a locking mechanism; 41. and (5) a bolt.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-5, an embodiment of the present utility model provides a drug delivery device, including a syringe 1 and a piston slidably disposed in the syringe 1, wherein the top of the piston is matched with an inner wall of the syringe 1 at one end of the piston, the piston is used for pushing and extracting a drug solution, a push rod 2 is rotatably connected to the piston, the push rod 2 is used for pushing the piston, one end of the push rod 2 far away from the piston is fixedly connected with a push plate 21, the push rod 2 is driven to push by pressing the push plate 21, one end of the push rod 2 at the piston is fixedly connected with a connecting portion 22, the piston is sleeved on the connecting portion 22, the connecting portion 22 includes a connecting post 221 fixedly connected to an end face of the push rod 2, a limit head 222 is fixedly connected to the connecting post 221, the limit head 222 is used for limiting the piston to prevent the piston from falling off, one end of the needle cylinder 1 is fixedly connected with a finger ring 12, the finger ring 12 is used for placing other fingers except a thumb, one end of the needle cylinder 1, which is positioned at the finger ring 12, is provided with a cylinder cover 13, a special-shaped hole 131 is formed in the cylinder cover 13, one end of the needle cylinder 1, which is far away from the cylinder cover 13, is communicated with a needle seat 11, the needle seat 11 is used for connecting an injection needle, the injection needle is sleeved on the needle seat 11, a push rod 2 movably passes through the special-shaped hole 131, a plurality of special-shaped plates 3 are slidingly connected on the push rod 2 along the length direction, the special-shaped plates 3 are staggered, sliding blocks are fixedly connected on the special-shaped plates 3, a plurality of sliding grooves matched with the sliding blocks are formed in the push rod 2, each special-shaped plate 3 is slidingly connected in the sliding grooves through the sliding blocks, a locking mechanism 4 is respectively arranged between each special-shaped plate 3 and the push rod 2, and the locking mechanism 4 is used for locking the special-shaped plates 3; the locking mechanism 4 is a bolt 41, a threaded hole is formed in the irregular plate 3 in a penetrating manner, the bolt 41 is in threaded connection with the irregular plate 3 through the threaded hole, the end part of the bolt 41 is in abutting fit with the peripheral side surface of the push rod 2, so that the irregular plate 3 is locked through the action of friction force, the shape of the irregular plate 3 is consistent with that of the irregular hole 131, an alignment station and a blocking station are arranged in the rotating process of the push rod 2 relative to the needle cylinder 1, and the irregular plate 3 and the irregular hole 131 are completely aligned at the alignment station, so that the irregular plate 3 can pass through the irregular hole 131; in the blocking station, the profiled plate 3 is offset from the profiled hole 131 so that the cover 13 blocks the profiled plate 3.

In another embodiment of the present utility model, a plurality of connection plates are distributed on the push rod 2 in an annular array, and the connection plates are not in contact with the inner wall of the needle cylinder 1, so that the movement path of the push rod 2 is more stable and does not swing when the push rod 2 is pushed and pulled.

Working principle: when the medicine is pushed, the push rod 2 is driven to slide in the needle cylinder 1 by pulling the push plate 21, the push rod 2 drives the piston to slide in the needle cylinder 1, the push rod 2 drives the piston to reversely slide in the needle cylinder 1 by pressing the push plate 21, in the medicine pushing process, one special-shaped plate 3 closest to one end of the piston can reach a blocking station, the cylinder cover 13 blocks the special-shaped plate 3, the piston can not slide in the needle cylinder 1 continuously, the pushed medicine is the dosage of the first medicine, in the second medicine feeding process, the push rod 2 is rotated to drive the special-shaped plate 3 to rotate, the special-shaped plate 3 reaches an alignment station, the push plate 21 is continuously pressed, the push rod 2 drives the piston to continuously slide, the special-shaped plate 3 enters the interior of the needle cylinder 1, the second medicine feeding process is finished until the other special-shaped plate 3 far from one end of the piston reaches the blocking station, and the third medicine feeding process is repeated.

When adjusting the dose per administration, each of the shaped plates 3 is slid on the push rod 2 to a specified position, the shaped plates 3 are locked by the bolts 41, and the dose per administration can be adjusted by adjusting the position of the shaped plates 3.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (6)

1. The utility model provides a medicine feeder, its characterized in that includes cylinder (1) and slides the piston that sets up in cylinder (1), rotate on the piston and be connected with push rod (2), the one end fixedly connected with push plate (21) of piston is kept away from to push rod (2), the one end fixedly connected with ring (12) of cylinder (1), the one end that cylinder (1) is located ring (12) is provided with cover (13), has seted up special-shaped hole (131) on cover (13), and push rod (2) activity passes special-shaped hole (131), and along length direction sliding connection there being a plurality of sketch plates (3) on push rod (2), be provided with respectively between every sketch plate (3) and push rod (2) locking mechanism (4); the shape of the irregular plate (3) is consistent with the shape of the irregular hole (131), an alignment station and a blocking station are arranged in the process that the push rod (2) rotates relative to the needle cylinder (1), and the irregular plate (3) is completely aligned with the irregular hole (131) in the alignment station, so that the irregular plate (3) can pass through the irregular hole (131); at the blocking station, the irregular plate (3) is staggered with the irregular hole (131) so that the cylinder cover (13) blocks the irregular plate (3).

2. A dosing device according to claim 1, characterized in that each of the profiled plates (3) is fixedly connected with a slide block, the push rod (2) is provided with a plurality of slide grooves matched with the slide blocks, and each of the profiled plates (3) is slidably connected in the slide grooves through the slide blocks.

3. The drug feeder according to claim 1, further comprising a locking mechanism (4), wherein the locking mechanism (4) is a bolt (41), a threaded hole is formed in the irregular plate (3) in a penetrating mode, the bolt (41) is in threaded connection with the irregular plate (3) through the threaded hole, and the end portion of the bolt (41) is in butt fit with the peripheral side face of the push rod (2).

4. A device according to claim 1, wherein the push rod (2) is fixedly connected with a connecting part (22) at the end of the piston, and the piston is sleeved on the connecting part (22).

5. A dispenser according to claim 4, wherein the connecting portion (22) comprises a connecting post (221) fixedly connected to an end face of the push rod (2), and a limit head (222) is fixedly connected to the connecting post (221).

6. A dispenser according to claim 1, wherein the end of the barrel (1) remote from the cap (13) is connected to a needle mount (11).