Negative pressure medicine dispensing device

Abstract

The utility model relates to a negative pressure medicine dispensing device, belongs to the technical field of medical instruments, and aims to solve the problems that the medicine dispensing operation is complicated and is easy to interfere in the prior art. The negative pressure medicine dispensing device comprises a pipette, a control valve, a connecting seat and a telescopic bag assembly, the pipette is communicated with one end of the connecting seat, the other end of the connecting seat is communicated with the telescopic bag assembly, the control valve is arranged on the pipette, and the telescopic bag assembly is arranged on the connecting seat. The control valve can keep the interior of the cavity of the telescopic bag assembly in a vacuum state or a liquid storage state, and the control valve can further control liquid to enter and exit from the telescopic bag assembly. According to the negative pressure medicine dispensing device, a sterile environment can be kept in the medicine liquid dispensing process, and the influence on the medicine dispensing process caused by repeated puncture of the rubber plug can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a negative pressure medicine dispensing device. Background Art

[0002] In medical environments, negative pressure technology is often used for aseptic operation to prevent cross infection. When dispensing medicine, it is necessary to ensure that the entire process meets the standards of aseptic operation to ensure the purity and safety of the medicine.

[0003] In clinical work, to prepare liquid medicine, nurses need to use a syringe to draw out normal saline solution, then inject the normal saline solution into the medicine bottle containing the powdered medicine. After the preparation is complete, the prepared liquid medicine is drawn out and injected back into the normal saline solution.

[0004] During the preparation of liquid medicine, nurses are required to repeatedly use syringes to perform aspiration operations. The steps are cumbersome and time-consuming, and the preparation process is easily affected by external factors, which may damage the sterile environment. The rubber plug that encapsulates the powdered medicine is easily detached or damaged due to repeated punctures, which may interfere with the preparation of the liquid medicine. Utility Model Content

[0005] In view of the above analysis, the utility model aims to provide a negative pressure dispensing device to solve the problem in the prior art that the dispensing operation is complicated and easily disturbed.

[0006] The purpose of this utility model is mainly achieved through the following technical solutions:

[0007] A negative pressure medicine dispensing device comprises a pipette, a control valve, a connecting seat and a bellows assembly, wherein the pipette is connected to one end of the connecting seat, and the other end of the connecting seat is connected to the bellows assembly, and the control valve is arranged on the pipette, and the control valve can keep the cavity of the bellows assembly in a vacuum state or a liquid storage state;

[0008] The control valve comprises a switch, a connecting rod and a spherical plug;

[0009] The bellows assembly includes a bellows and an extrusion block.

[0010] Furthermore, one end of the telescopic bag is connected to the connecting seat, and the other end is connected to the extrusion block. The telescopic bag and the connecting seat are connected to form a cavity, and the cavity is used to place the medicine powder to be configured.

[0011] Furthermore, the telescopic bag assembly also includes a medicine dispensing cavity, one end of which is connected to the telescopic bag, and the other end is connected to the extrusion block. The medicine dispensing cavity is used to place medicine powder to be prepared, and a connecting hole is set at the position where the medicine dispensing cavity is connected to the telescopic bag.

[0012] Furthermore, a sealing plug is arranged in the medicine dispensing cavity, and the sealing plug is used to seal the communicating hole.

[0013] Furthermore, the sealing plug is connected to a lifting rod, and the lifting rod is connected to a handle after passing through the dispensing cavity and the extrusion block, and a sealing ring is arranged at the position where the lifting rod passes through the dispensing cavity and the extrusion block.

[0014] Furthermore, a stirring ball is arranged in the medicine dispensing cavity, and the diameter of the stirring ball is larger than the diameter of the connecting hole.

[0015] Furthermore, a medicine powder fixing part is arranged on the connecting seat, and the medicine powder fixing part comprises a fixing head, a medicine powder bag and a fixing rope.

[0016] Furthermore, the fixing head is arranged in the connecting seat, the fixing head is connected to the medicine powder bag through the fixing rope, and the medicine powder to be configured is placed in the medicine powder bag.

[0017] Furthermore, the control valve includes a switch, a connecting rod and a spherical plugging member, the switch is connected to the connecting rod, the connecting rod passes through the pipette and is connected to the spherical plugging member, and a through hole is provided on the spherical plugging member.

[0018] Furthermore, when the through hole is located in the axial direction of the pipette, liquid can enter and exit the telescopic bag assembly through the through hole; when the through hole is perpendicular to the axial direction of the pipette, the spherical plugging member can block the pipette.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] (1) The negative pressure dispensing device of the utility model does not come into contact with the outside air during use. The entire device is in a closed state, and a sterile environment can be maintained during the preparation of the liquid medicine, reducing the possibility of contamination of the liquid medicine;

[0021] (2) By setting a pipette and a bellows assembly, the physiological saline solution is allowed to enter the bellows through negative pressure for dispensing. After dispensing, the bellows is squeezed by the squeezing block so that the drug solution is injected back into the physiological saline solution through the pipette. The drug solution dispensing can be completed by puncturing the stopper of the physiological saline solution without repeated puncture, thereby preventing repeated puncture of the rubber stopper from affecting the drug solution dispensing;

[0022] (3) The control valve is provided to enable the dispensing device to maintain a vacuum state so that the physiological saline can be sucked into the bellows. The control valve can also control the inflow and outflow of liquid in the bellows so that the prepared liquid medicine can be injected back into the physiological saline;

[0023] (4) The powder to be prepared is placed in a powder bag and fixed by a fixing head and a fixing rope, so that physiological saline passes through the powder bag and enters the cavity formed by the connection between the telescopic bag and the connecting seat, dissolves the powder to form a liquid medicine, and then flows out of the powder bag, thereby preventing the powder from scattering and adhering to the wall of the telescopic bag, resulting in incomplete dissolution;

[0024] (4) The provision of a medicine dispensing cavity can effectively prevent the medicine powder from sticking to the inner wall of the telescopic bag and causing residue. The opening and closing of the connecting hole is controlled by the sealing plug, so that the medicine liquid can be controlled to complete the preparation process in the medicine dispensing cavity, preventing the medicine powder from entering the telescopic bag and sticking to the folds of the telescopic bag, so that the medicine powder can be dissolved more fully and thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0026] Figure 1 This is a schematic diagram of the overall structure of the negative pressure medication dispensing device of Example 1 of the present utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the control valve of Example 1 of the utility model;

[0028] Figure 3 This is a schematic structural diagram of a medicine powder fixing member of Example 2 of the utility model;

[0029] Figure 4 This is a schematic diagram of the overall structure of the negative pressure dispensing device of Example 3 of the utility model;

[0030] Figure 5 This is a schematic structural diagram of the sealing plug of Example 3 of the utility model.

[0031] Reference numerals:

[0032] 1-pipette; 2-control valve; 21-switch; 22-connecting rod; 23-spherical plug; 231-through hole; 3-connecting seat; 31-powder fixing piece; 311-fixing head; 312-powder bag; 313-fixing rope; 4-telescopic bag assembly; 41-telescopic bag; 42-extrusion block; 43-dispensing chamber; 431-lifting rod; 432-handle; 433-sealing plug; 4331-water blocking ring; 434-stirring ball; 435-connecting hole. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] Example 1

[0035] A specific embodiment of the utility model discloses a negative pressure medicine dispensing device, such as Figure 1 As shown, it includes a pipette 1, a control valve 2, a connecting seat 3 and a bellows bag assembly 4. The pipette 1 is connected to one end of the connecting seat 3, and the other end of the connecting seat 3 is connected to the bellows bag assembly 4. The control valve 2 is arranged on the pipette 1. The control valve 2 can keep the cavity of the bellows bag assembly 4 in a vacuum state or a liquid storage state. The control valve 2 can also control the liquid to enter and exit the bellows bag assembly 4.

[0036] like Figure 2 As shown, the control valve 2 includes a switch 21, a connecting rod 22 and a spherical plugging piece 23. The switch 21 is connected to the connecting rod 22. The connecting rod 22 passes through the pipette 1 and is connected to the spherical plugging piece 23. A through hole 231 is provided on the spherical plugging piece 23. The adjusting switch 21 can adjust the position of the spherical plugging piece 23. When the through hole 231 is located in the axial direction of the pipette 1, the liquid can enter and exit the telescopic bag assembly 4 through the through hole 231. When the through hole 231 is perpendicular to the axial direction of the pipette 1, the spherical plugging piece 23 can block the pipette 1, thereby maintaining the vacuum or liquid storage state of the telescopic bag assembly 4.

[0037] like Figure 1 As shown, the telescopic bag assembly 4 includes a telescopic bag 41 and an extrusion block 42. One end of the telescopic bag 41 is connected to the connecting seat 3, and the other end is connected to the extrusion block 42. The telescopic bag 41 is connected to the connecting seat 3 to form a cavity. The cavity is used to place the medicine powder to be configured. The cavity is in a vacuum state, so that physiological saline can automatically enter the cavity.

[0038] Preferably, the telescopic bag 41 is made of a transparent material, so that medical personnel can observe the configuration of the liquid medicine.

[0039] When using the dispensing device to prepare medicine powder, the pipette 1 is inserted into the physiological saline through the stopper of the physiological saline, the switch 21 is adjusted so that the through hole 231 is located in the axial direction of the pipette 1, and the physiological saline is sucked into the cavity formed by the telescopic bag 41 and the connecting seat 3 under the action of negative pressure, and the telescopic bag 41 is gradually stretched from a compressed state, and the switch 21 is adjusted so that the through hole 231 is perpendicular to the axial direction of the pipette 1, and the dispensing device is shaken or left to stand until the medicine powder is completely dissolved in the physiological saline, and the switch 21 is adjusted so that the through hole 231 is located in the axial direction of the pipette 1, and the squeezing block 42 is pressed in the direction of the connecting seat 3, so that the squeezing block 42 compresses the telescopic bag 41, and the medicine liquid in the cavity is squeezed into the physiological saline, thereby completing the dispensing operation; the pipette 1 is removed from the stopper of the physiological saline, the connection between the dispensing device and the physiological saline container is released, and the prepared medicine liquid is used for clinical use.

[0040] Example 2

[0041] Another specific embodiment of the utility model discloses a negative pressure dispensing device, such as Figure 3 As shown, the difference from Example 1 is that a powder fixing member 31 is further provided on the connecting seat 3 to fully dissolve the powder and prevent the powder from dispersing and affecting the concentration of the prepared liquid medicine.

[0042] The powder fixing part 31 includes a fixing head 311, a powder bag 312 and a fixing rope 313. The fixing head 311 is arranged in the connecting seat 3. The fixing head 311 is connected to the powder bag 312 through the fixing rope 313. The powder to be configured is placed in the powder bag 312. The powder bag 312 can prevent the powder from spilling and allow liquid to enter and exit. Exemplarily, the powder bag 312 is made of non-woven fabric.

[0043] When the physiological saline is sucked by negative pressure through the pipette 1, the physiological saline enters the cavity formed by the telescopic bag 41 and the connecting seat 3 through the medicine powder bag 312, dissolves the medicine powder to form a medicine liquid, and then flows out of the medicine powder bag 312, thereby preventing the medicine powder from dispersing and affecting the configuration of the medicine liquid.

[0044] Example 3

[0045] Another specific embodiment of the utility model discloses a negative pressure dispensing device, such as Figure 3 As shown, the difference from Example 1 and Example 2 is that, Figure 4 As shown, the telescopic bag assembly 4 further includes a medicine dispensing cavity 43, which is used to prepare liquid medicine to prevent medicine powder from sticking to the inner wall of the telescopic bag 41 and causing residue.

[0046] One end of the medicine dispensing cavity 43 is connected to the telescopic capsule 41, and the other end is connected to the extrusion block 42. The medicine dispensing cavity 43 is used to put the medicine powder to be prepared. A connecting hole 435 is set at the position where the medicine dispensing cavity 43 is connected to the telescopic capsule 41. A sealing plug 433 is set in the medicine dispensing cavity 43. The sealing plug 433 is used to block the connecting hole 435 to prevent liquid exchange between the telescopic capsule 41 and the medicine dispensing cavity 43. The sealing plug 433 is connected to the lifting rod 431, and the lifting rod 431 passes through the medicine dispensing cavity 43 and the extrusion block 42 and is connected to the handle 432. A sealing ring is set at the position where the lifting rod 431 passes through the medicine dispensing cavity 43 and the extrusion block 42 to prevent liquid leakage.

[0047] Preferably, a stirring ball 434 is provided in the medicine dispensing cavity 43 . There are multiple stirring balls 434 . The diameter of the stirring ball 434 is larger than the diameter of the connecting hole 435 . The stirring ball 434 is used to dissolve the medicine powder faster and more evenly.

[0048] Preferably, the medicine dispensing cavity 43 is made of transparent material to facilitate medical staff to observe the disposition of medicine powder.

[0049] like Figure 5As shown, a water blocking ring 4331 is provided along the circumferential direction of the sealing plug 433, and the water blocking ring 4331 is used to prevent the liquid from flowing between the medicine dispensing cavity 43 and the telescopic capsule 41. When the sealing plug 433 is inserted into the communication hole 435, the communication between the medicine dispensing cavity 43 and the telescopic capsule 41 can be prevented, and when the sealing plug 433 leaves the communication hole 435, the liquid in the medicine dispensing cavity 43 and the telescopic capsule 41 can flow through the communication hole 435.

[0050] When the dispensing device is used for dispensing, the bellows assembly 4 is placed in a vacuum state, and the sealing plug 433 is inserted into the connecting hole 435. The pipette 1 is inserted into the physiological saline through the physiological saline plug, and the switch 21 is adjusted so that the through hole 231 is located in the axial direction of the pipette 1, and the physiological saline is sucked into the bellows 41. The switch 21 is adjusted so that the through hole 231 is perpendicular to the axial direction of the pipette 1, so that the pipette 1 remains in a closed state, the dispensing device is inverted, and the handle 432 is moved away from the bellows 41, so that the sealing plug 433 leaves the connecting hole 435, and the physiological saline in the bellows 31 enters the dispensing cavity 43, and the physiological saline in the bellows 31 enters the dispensing cavity 43. Move the handle 432 in the direction of the telescopic bag 31 so that the sealing plug 433 is inserted into the connecting hole 435 to prevent saline and medicine powder from entering the telescopic bag 41 from the dispensing chamber 43. The medicine powder is fully dissolved in the dispensing chamber 43 by standing or shaking. The dispensing device is restored to the upright state, and the handle 432 is moved to make the sealing plug 433 leave the connecting hole 435. The prepared medicine liquid enters the telescopic bag 31. The switch 21 is adjusted so that the through hole 231 is located in the axial direction of the pipette 1. Press the handle 432 and squeeze the telescopic bag 41 through the squeezing block 42. The telescopic bag 41 is compressed and the medicine liquid is injected back into the saline through the pipette 1 to complete the dispensing operation.

[0051] Compared with the prior art, the negative pressure dispensing device of the utility model does not contact with the outside air during use, and the whole device is in a closed state, which can maintain a sterile environment and prevent the drug solution from being contaminated; by setting the pipette 1 and the telescopic bag assembly 4, the physiological saline is allowed to enter the telescopic bag 41 through negative pressure for dispensing, and after the dispensing is completed, the telescopic bag 41 is squeezed by the squeezing block 42 so that the drug solution is injected back into the physiological saline through the pipette 1, and the drug solution can be prepared by puncturing the stopper of the physiological saline only, without repeated puncture, so as to prevent the repeated puncture of the rubber stopper from affecting the drug solution preparation; by setting the control valve 2, the dispensing device can maintain a vacuum state, so that the physiological saline can be sucked into the telescopic bag 41, and the control valve 2 can also control the inflow and outflow of the liquid in the telescopic bag 41; by setting the powder fixing part 31, the powder bag 312 can be fixed to prevent the powder from being scattered and sticking to the bag wall of the telescopic bag 41, resulting in insufficient dissolution; by setting the dispensing cavity 43, the powder can be effectively prevented from sticking to the inner wall of the telescopic bag 41 to cause residue, so that the powder is dissolved more fully and thoroughly.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure dispensing device, characterized in that: The invention comprises a pipette (1), a control valve (2), a connecting seat (3) and a telescopic bag assembly (4); the pipette (1) is connected to one end of the connecting seat (3), and the other end of the connecting seat (3) is connected to the telescopic bag assembly (4); the control valve (2) is arranged on the pipette (1), and the control valve (2) can keep the cavity of the telescopic bag assembly (4) in a vacuum state or a liquid storage state; The control valve (2) comprises a switch (21), a connecting rod (22) and a spherical plug (23); The bellows assembly (4) comprises a bellows (41) and an extrusion block (42).

2. The negative pressure dispensing device according to claim 1, characterized in that: One end of the telescopic bag (41) is connected to the connecting seat (3), and the other end is connected to the extrusion block (42); the telescopic bag (41) and the connecting seat (3) are connected to form a cavity, and the cavity is used to place the medicine powder to be configured.

3. The negative pressure dispensing device according to claim 1, characterized in that: The telescopic bag assembly (4) further comprises a medicine dispensing cavity (43), one end of which is connected to the telescopic bag (41), and the other end of which is connected to the extrusion block (42). The medicine dispensing cavity (43) is used to place medicine powder to be prepared, and a connecting hole (435) is provided at the position where the medicine dispensing cavity (43) is connected to the telescopic bag (41).

4. The negative pressure dispensing device according to claim 3, characterized in that: A sealing plug (433) is arranged in the medicine dispensing cavity (43), and the sealing plug (433) is used to seal the connecting hole (435).

5. The negative pressure dispensing device according to claim 4, characterized in that: The sealing plug (433) is connected to the lifting rod (431), and the lifting rod (431) passes through the dispensing cavity (43) and the extrusion block (42) and is then connected to the handle (432). A sealing ring is provided at the position where the lifting rod (431) passes through the dispensing cavity (43) and the extrusion block (42).

6. The negative pressure dispensing device according to claim 5, characterized in that: A stirring ball (434) is arranged in the medicine dispensing cavity (43), and the diameter of the stirring ball (434) is larger than the diameter of the connecting hole (435).

7. The negative pressure medicine dispensing device according to any one of claims 1 to 6, characterized in that: The control valve (2) comprises a switch (21), a connecting rod (22) and a spherical plugging member (23); the switch (21) is connected to the connecting rod (22); the connecting rod (22) passes through the pipette (1) and is connected to the spherical plugging member (23); and a through hole (231) is provided on the spherical plugging member (23).

8. The negative pressure dispensing device according to claim 7, characterized in that: When the through hole (231) is located in the axial direction of the pipette (1), liquid can enter and exit the telescopic bag assembly (4) through the through hole (231); when the through hole (231) is perpendicular to the axial direction of the pipette (1), the spherical plug (23) can block the pipette (1).

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