Short-core-rod medicine dissolving device, electric medicine dispensing device and medicine dispensing system

Abstract

The utility model provides a short core rod medicine dissolving device, electric medicine dispensing device and medicine dispensing system.The short core rod medicine dissolving device comprises a barrel and a movable rubber plug arranged in the barrel, a needle connector is arranged at the front end of the barrel, an opening is formed in the rear end of the barrel, a core rod extending out of the barrel from the opening is arranged at the rear end of the movable rubber plug, the length of the core rod does not exceed 5 cm, and the diameter of the core rod is larger than that of the barrel. In order to adapt to the length of the core rod of the short-core-rod medicine dissolving device, the farthest axial distance between the mounting groove and the clamping groove of the electric medicine dissolving device does not exceed 5 cm, namely, the farthest axial distance does not exceed one half of the length of the barrel of the short-core-rod medicine dissolving device. Therefore, the electric medicine dispensing device reserves a smaller moving space for the core rod of the short-core-rod medicine dissolving device.

Description

Technical Field

[0001] This utility model relates to the field of injection drug preparation technology, and in particular to a short core rod drug dissolving device, an electric drug preparation device, and a drug preparation system. Background Technology

[0002] Currently, injectable drug preparation typically uses manually operated dissolving devices. Commercially available dissolving devices consist of a cylinder and a movable rubber stopper housed within the cylinder. A needle is attached to the front of the cylinder, and an opening is located at the rear. A mandrel extends from the opening to the outside of the cylinder from the rear of the movable rubber stopper. During preparation, the operator first manually moves the mandrel forward within the cylinder to expel air between the front of the stopper and the front of the cylinder. Then, the operator moves the mandrel backward within the cylinder, allowing the cylinder to draw the drug solution through the needle. This manual operation, involving repeated preparation steps, is prone to fatigue and errors.

[0003] An electric dispensing device is available, comprising a mounting section and a lead screw drive assembly. The dissolving unit is mounted on the mounting section. The lead screw drive assembly drives the core rod of the dissolving unit, moving the movable rubber stopper back and forth to perform the dispensing operation. This eliminates the need for manual operation of the dissolving unit, reducing the possibility of human error. However, to ensure manual operation of the core rod to move the movable rubber stopper within the cylinder, the core rod needs to be the same length as the cylinder, or even longer. Therefore, if the existing dissolving unit is installed on the electric dispensing device, the electric dispensing device would need to provide a large amount of space for the core rod's movement, requiring it to be quite long. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to reduce the space required for the core rod of the electric dispensing device to be used as a dissolving device.

[0005] To solve the above-mentioned technical problems, this utility model provides a short core rod dissolving device, including a cylinder and a movable rubber stopper disposed in the cylinder. The front end of the cylinder is provided with a needle connector and the rear end has an opening. The rear end of the movable rubber stopper is provided with a core rod extending out of the opening and out of the cylinder. The length of the core rod does not exceed 5 cm and / or does not exceed half the length of the cylinder.

[0006] Preferably, the radial dimension of the core rod is not greater than the opening at the rear end of the cylinder.

[0007] Preferably, the rear end of the core rod is provided with a radially protruding snap-fit ​​structure, the radial dimension of which is smaller than the opening at the rear end of the cylinder.

[0008] Preferably, the rear end of the cylinder is provided with a radially protruding rim.

[0009] This utility model also provides an electric dispensing device, including a mounting part with a mounting groove for the rear end of the dissolving agent cylinder to be inserted into the mounting part. It also includes a lead screw drive assembly, which includes a lead screw mounted on a drive motor and a lead screw nut slider that moves back and forth driven by the lead screw. The front end of the lead screw nut slider has a snap-fit ​​part extending into the mounting part, and the snap-fit ​​part has a snap-fit ​​groove for the rear end of the dissolving agent core rod to be inserted into the mounting part. The furthest axial distance between the snap-fit ​​groove and the snap-fit ​​groove does not exceed 5 cm. The lead screw nut slider drives the core rod of the dissolving agent to move the movable rubber stopper back and forth through its snap-fit ​​groove.

[0010] Preferably, it includes a drive unit located behind the mounting part, the drive unit having a chamber inside, and the lead screw drive assembly installed in the chamber.

[0011] Preferably, the drive housing serves as the handle of this dispensing device.

[0012] Preferably, both the mounting groove and the snap-fit ​​groove have their openings facing upwards.

[0013] This utility model also provides a drug dispensing system, including the short core rod dissolving device and the electric dispensing device as described above. The rear end of the cylinder of the short core rod dissolving device is inserted into the mounting groove of the electric dispensing device, and the rear end of the core rod of the short core rod dissolving device is inserted into the snap-fit ​​groove of the snap-fit ​​part of the front end of the screw nut slider of the electric dispensing device. The drive motor of the electric dispensing device drives the lead screw to rotate, which in turn drives the screw nut slider to move back and forth. The snap-fit ​​part of the screw nut slider can extend into the cylinder of the short core rod dissolving device. The core rod of the short core rod dissolving device is driven by the snap-fit ​​groove to drive the movable rubber stopper to move back and forth in the cylinder.

[0014] Preferably, after the rear end of the short core rod of the dissolving device is engaged in the locking groove of the locking part of the front end of the nut slider of the electric dispensing device, the overall radial dimension of the core rod and the locking part of the front end of the nut slider is smaller than the opening at the rear end of the cylinder.

[0015] This invention has the following advantages: In the electric dispensing device, the mounting groove on the mounting part allows the rear end of the short core rod dissolving device to be inserted and installed, and the snap-fit ​​groove on the screw nut slider allows the rear end of the short core rod dissolving device to be inserted and installed. Therefore, the space between the mounting groove and the snap-fit ​​groove is the movement space reserved by the electric dispensing device for the core rod of the dissolving device. After the short core rod dissolving device is installed on the electric dispensing device, the drive motor of the electric dispensing device drives the screw to rotate, which in turn drives the screw nut slider to move back and forth. The snap-fit ​​part of the screw nut slider can extend into the short core rod dissolving device. Inside the dissolving device's cylinder, the core rod of the short core rod dissolving device moves back and forth within the cylinder via a snap-fit ​​groove. Therefore, the core rod length of the dissolving device can be set relatively short, specifically not exceeding 5 cm, and / or not exceeding half the cylinder length. To accommodate the core rod length of the short core rod dissolving device, the farthest axial distance between the mounting slot and the snap-fit ​​groove of the electric dispensing device does not exceed 5 cm, and does not exceed half the cylinder length of the short core rod dissolving device. Therefore, the electric dispensing device provides a small amount of movement space for the core rod of the short core rod dissolving device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a short core rod dissolving device.

[0017] Figure 2 This is a schematic diagram showing the separation of the cylinder of the short core rod dissolving device from the movable rubber stopper and the core rod.

[0018] Figure 3 This is a schematic diagram of an electric dispensing device.

[0019] Figure 4 This is a schematic diagram of a short core rod dissolving device installed on an electric dispensing device.

[0020] Figure 5 yes Figure 4 A schematic diagram of its longitudinal section. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments.

[0022] Short core rod dissolving device, such as Figure 1 and Figure 2As shown, the device includes a cylindrical body 33, which is hollow inside. A movable rubber plug 31, which can move forward and backward, is located inside the body. A needle connector 34, which is tubular and connects to the interior of the body, is located at the front end of the body. Radially protruding rims 36 are located on both sides of the rear end of the body, and an opening for inserting the movable rubber plug 31 is also present at the rear end of the body. A core rod 32 is located at the rear end of the movable rubber plug 31, extending from the rear opening of the body to the outside of the body. The length b of the body 33 is 10 cm, and the length a of the core rod 32 is 1.25 cm, not exceeding half the length b of the body. The overall radial dimension of the core rod 32 is not greater than the rear opening of the body, and a radially protruding snap-fit ​​structure 35 is located at the rear end of the core rod 32. The radial dimension of the snap-fit ​​structure 35 is smaller than the rear opening of the body. Thus, the core rod 32 can enter the cylinder 33 through the opening at the rear end of the cylinder 33, driving the movable rubber stopper 31 to move forward together in the cylinder 1, thereby expelling air or drug solution from the cylinder 33 through the needle connector 34, or driving the movable rubber stopper 31 to move backward together in the cylinder 33, thereby drawing in air or drug solution into the cylinder 33 through the needle connector 34.

[0023] like Figure 3 and Figure 4 As shown, the electric dispensing device includes a mounting part 1 for mounting a short core rod dissolving device and a drive part 2 located behind the mounting part 1. The mounting part 1 has mounting grooves 11 for the rims 36 on both sides of the rear end of the short core rod dissolving device to be inserted into the mounting grooves 11, with the groove openings facing upwards. After the short core rod dissolving device is inserted into the mounting grooves 11 of the mounting part 1 by the rims 36 on both sides of its rear end, it is fixed in place. The front end of the short core rod dissolving device extends forward beyond the front end of the mounting part 1. The outer shell of the drive part 2 serves as the handle of this dispensing device, allowing the user to hold the drive part 2 to perform the dispensing operation.

[0024] like Figure 5As shown, the drive unit 2 has a chamber inside, in which a lead screw drive assembly and a drive motor 7 for driving the lead screw drive assembly are housed. The lead screw drive assembly includes a lead screw 5 mounted on the drive motor 7 and a lead screw nut slider 6 that moves back and forth driven by the lead screw 5. The lead screw nut slider 6 is elongated, with its rear end mounted on the lead screw 5 and its front end having a locking part that extends forward out of the chamber of the drive unit 2 and into the mounting unit 1. The locking part at the front end of the lead screw slider 6 has a locking structure 35 for the rear end of the short core rod dissolving device to engage with the mounting locking groove 61. With the short core rod dissolving device facing upwards, after the rear end edge 36 of the cylinder 33 is inserted into the mounting groove 11 of the mounting part 1, the locking structure 35 of the rear end of the core rod 32 of the short core rod dissolving device is inserted into the locking groove 61 of the locking part of the front end of the wire nut slider 6 of the electric dispensing device. After the locking structure 35 is locked in the locking groove 61, the overall radial dimension of the core rod 32 and the locking part of the front end of the wire nut slider 6 is smaller than the opening at the rear end of the cylinder 33, thereby ensuring that the locking part of the wire nut slider 6 can drive the core rod 32 to enter the cylinder 33 from the opening at the rear end of the cylinder 33 and drive the movable rubber stopper 31 to move back and forth.

[0025] In the electric dispensing device, the mounting groove 11 on the mounting part 1 allows the rear end of the cylinder 33 of the short core rod dissolving device to be inserted and installed, and the locking groove 61 on the screw nut slider 6 allows the rear end of the core rod 32 of the short core rod dissolving device to be inserted and installed. Therefore, the space between the mounting groove 11 and the locking groove 61 is the movement space reserved by the electric dispensing device for the core rod 32 of the short core rod dissolving device. After the short core rod dissolving device is installed on the electric dispensing device, the drive motor 7 of the electric dispensing device drives the screw 5 to rotate, which in turn drives the screw nut slider 6 to move back and forth. The locking part of the screw nut slider 6 can extend into the cylinder 33 of the short core rod dissolving device. The short core rod of the dissolving device is driven by the snap-fit ​​groove 61, which drives the movable rubber stopper 31 to move back and forth within the cylinder 33. Therefore, the length of the core rod 32 of the short core rod dissolving device can be set to be relatively short, specifically 1.25 cm, which does not exceed half the length of the cylinder 33. To accommodate the length of the core rod 32 of the short core rod dissolving device, the farthest axial distance between the mounting groove 11 and the snap-fit ​​groove 61 of the electric dispensing device is set to 1.25 cm, which does not exceed half the length of the cylinder 33 of the short core rod dissolving device. Therefore, the electric dispensing device provides a small amount of space for the movement of the core rod 32 of the short core rod dissolving device. In other embodiments, the length of the core rod 32 of the short core rod dissolving device can be set to other lengths not exceeding 5 cm, such as 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, etc.; it can also be set to other lengths not exceeding half the length of the cylinder 33, for example, if the length of the cylinder 33 is 12 cm, then the length of the core rod 32 can be set to 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, etc.; it can also be set to other lengths not exceeding 5 cm and not exceeding half the length of the cylinder 33, for example, if the length of the cylinder 33 is 12 cm, then the length of the core rod 32 can be set to 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, but cannot be set to 6 cm. Correspondingly, the farthest axial distance between the mounting groove 11 and the snap-fit ​​groove 61 of the electric dispensing device is set to be the same as the length of the core rod 32.

[0026] During the process of dispensing medicine using an electric dispensing device, the short core rod dissolving device is first installed on the mounting part 1, so that the ring edge 36 at the rear end of the cylinder 33 of the short core rod dissolving device is inserted into the mounting groove 11 of the mounting part 1, and the snap-fit ​​structure 35 at the rear end of the core rod 32 of the short core rod dissolving device is inserted into the snap-fit ​​groove 61 at the front end of the snap-fit ​​part of the nut slider 6. In this way, the short core rod dissolving device and the electric dispensing device form a dispensing system. Then, start the drive motor 7 to drive the lead screw drive assembly, control the lead screw 5 of the lead screw drive assembly to rotate forward, causing the lead screw nut slider 6 to move forward along the lead screw 5. The lead screw nut slider 6 drives the core rod 32 of the short core rod dissolving device to extend into the cylinder 33 through the snap-fit ​​groove 61 of its front end snap-fit ​​part, causing the movable rubber stopper 31 to move forward in the cylinder 33, expelling the air between the front end of the movable rubber stopper 31 of the short core rod dissolving device and the front end of the cylinder 33. Then, control the lead screw 5 of the lead screw drive assembly to rotate in the reverse direction, causing the lead screw nut slider 6 to move backward along the lead screw 5. The lead screw nut slider 6 drives the core rod 32 of the short core rod dissolving device through the snap-fit ​​groove 61 of its front end snap-fit ​​part, causing the movable rubber stopper 31 to move backward in the cylinder 33, allowing the short core rod dissolving device to draw in the drug solution for the drug preparation operation.

[0027] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. A short-core rod dissolving device, comprising a cylindrical body (33) and a movable rubber plug (31) disposed within the cylindrical body (33), wherein the front end of the cylindrical body (33) is provided with a needle connector (34) and the rear end has an opening, and the rear end of the movable rubber plug (31) is provided with a core rod (32) extending from the opening to the outside of the cylindrical body (33), characterized in that, The length of the core rod (32) is not more than 5 cm and / or not more than half of the length of the barrel (33).

2. The short stem medicator of claim 1, wherein The radial dimension of the core rod (32) is not greater than the opening of the rear end of the barrel (33).

3. The short stem medicator of claim 2, wherein, The rear end of the core rod (32) is provided with a radially protruding clamping structure (35), and the radial dimension of the clamping structure (35) is smaller than the opening of the rear end of the barrel (33).

4. The short stem medicator of claim 1 wherein, The rear end of the barrel (33) is provided with a radially protruding rim (36).

5. An electric medicine dispenser, comprising a mounting portion (1) having a mounting groove (11) for mounting a rear end of a barrel (33) of a medicine dissolving device, and a screw rod driving assembly comprising a screw rod (5) mounted on a driving motor (7) and a nut block (6) driven by the screw rod (5) to move forward and backward, the nut block (6) being provided at a front end thereof with a clamping portion extending into the mounting portion (1), the clamping portion being provided with a clamping groove (61) for mounting a rear end of a core rod (32) of the medicine dissolving device, characterized in that, The farthest axial distance between the mounting groove (11) and the clamping groove (61) is not more than 5 cm, and the female thread slider (6) drives the core rod (32) of the medicine dispenser through the clamping groove (61) to move the movable rubber plug (31) forward and backward.

6. The electrically powered dispenser of claim 5 wherein, The drive part (2) is located behind the mounting part (1), and a cavity is arranged in the drive part (2), and the screw rod driving assembly is arranged in the cavity.

7. The electrically powered dispenser of claim 6 wherein, The shell of the drive part (2) serves as the handle of the medicine dispenser.

8. The motorized dispenser of claim 5, wherein, The mounting groove (11) and the clamping groove (61) have their groove openings facing upward.

9. A dispensing system, characterized in that The short core rod medicine dispenser and the electric medicine dispenser are combined, the rear end of the barrel (33) of the short core rod medicine dispenser is clamped and mounted on the mounting groove (11) of the electric medicine dispenser, the rear end of the core rod (32) of the short core rod medicine dispenser is clamped and mounted on the clamping groove (61) of the front end clamping part of the female thread slider (6) of the electric medicine dispenser, the driving motor (7) of the electric medicine dispenser drives the screw rod (5) to rotate and drives the female thread slider (6) to move forward and backward, the clamping part of the female thread slider (6) can extend into the barrel (33) of the short core rod medicine dispenser, and the core rod (32) of the short core rod medicine dispenser is driven by the clamping groove (61) to drive the movable rubber plug (31) to move forward and backward in the barrel (33).

10. A dispensing system according to claim 9, characterised in that After the rear end of the core rod (32) of the short core rod medicine dispenser is clamped and mounted on the clamping groove (61) of the front end clamping part of the female thread slider (6) of the electric medicine dispenser, the radial dimension of the whole formed by the core rod (32) and the front end clamping part of the female thread slider (6) is smaller than the opening of the rear end of the barrel (33).

Images