Negative pressure control automatic chemotherapy drug configuration device

Abstract

The present invention discloses a negative pressure controlled automatic configuration chemotherapy drug device, which comprises a three-way conversion communication device and an electric suction and medicine swinging device, wherein the electric suction and medicine swinging device comprises a base, a swing mounting frame, and a swing driving device, a vacuum pump and an inflation air pump installed on the base, the swing mounting frame is used to carry a medicine bottle, a liquid bag and a three-way conversion communication device, the swing mounting frame is installed at the output end of the swing driving device, the swing mounting frame swings under the drive of the swing driving device to switch the positions of the medicine bottle and the liquid bag by rotation, the three-way conversion communication device has a gas flow channel for connecting the medicine bottle and a liquid flow channel for connecting the liquid bag and the medicine bottle, and the vacuum pump and the inflation air pump are both connected to the gas flow channel. The negative pressure controlled automatic configuration chemotherapy drug device of the present invention can prevent chemotherapy drugs from harming the human body, and has the advantages of safety, hygiene and efficient drug dispensing.

Description

Technical Field

[0001] The invention relates to the field of medical equipment, and in particular to a negative pressure controlled automatic configuration chemotherapy drug device dedicated to chemotherapy drugs. Background Art

[0002] Intravenous chemotherapy drugs are used to treat tumors. They are prepared by professional technicians in the intravenous drug preparation center according to the operating procedures. Various drugs need to be transferred to the clean area for aseptic preparation to reduce the risk of contamination during drug preparation and ensure that they can be directly used for intravenous infusion. Anti-tumor chemotherapy drugs have the characteristics of poor selectivity and strong toxic and side effects, which can cause damage to multiple organs in the human body, and have high requirements for drug preparation conditions and preparation efficiency.

[0003] The following defects exist in the process of manual dispensing: 1. Manual dispensing will inevitably cause physical harm to the operator. The process of preparing chemotherapy drugs is prone to air pollution, which will cause damage to the operator. Due to the lack of an effective negative pressure device in the chemotherapy drug bottle, the drug particles inevitably generated during the preparation process are dispersed above and around the operating table. The dispensing operator inhales the chemotherapy drug particles through the skin or respiratory tract due to close contact, causing a certain degree of damage to the body of the surrounding people; in addition, if the operator does not wear enough protection and does not wear gloves properly before the dispensing operation, when the drug solution accidentally contacts the skin, it may cause skin necrosis; in addition, if the operation time is long and the gloves contaminated by chemotherapy drugs are not replaced in time, the drugs penetrate latex gloves and polyvinyl chloride gloves and contaminate the skin. 2. Manual dispensing can easily cause chemotherapy drugs to contaminate each other through gloves, and a large number of gloves need to be replaced continuously to meet their safety standards, and the consumption of protective materials is large. 3. Manual dispensing has high labor costs and low efficiency. When dispensing chemotherapy drugs in a safety cabinet, due to limited space, only one drug can be prepared at a time, which requires a lot of manpower and time. Therefore, the existing manual dispensing method cannot meet the existing medical needs.

[0004] In order to solve the above problems, it is necessary to provide a negative pressure controlled automatic chemotherapy drug configuration device. Summary of the invention

[0005] The purpose of the present invention is to provide a negative pressure controlled automatic chemotherapy drug dispensing device which can avoid chemotherapy drugs from harming the human body and is safe, hygienic and efficient in dispensing.

[0006] In order to achieve the above-mentioned purpose, the negative pressure controlled automatic configuration chemotherapy drug device provided by the present invention includes a three-way conversion connecting tube and an electric suction and drug swinging device, the electric suction and drug swinging device includes a base, a swing mounting frame, and a swing driving device, a vacuum air pump and an inflation air pump installed on the base, the swing mounting frame is used to carry a medicine bottle, a liquid bag and the three-way conversion connecting tube, the swing mounting frame is installed at the output end of the swing driving device, the swing mounting frame swings under the drive of the swing driving device to switch the positions of the medicine bottle and the liquid bag by rotation, the three-way conversion connecting tube has a gas flow channel for connecting the medicine bottle and a liquid flow channel for connecting the liquid bag and the medicine bottle, the vacuum air pump and the inflation air pump are both connected to the gas flow channel, the vacuum air pump evacuates the gas flow channel so that the liquid in the liquid bag enters the medicine bottle through the liquid flow channel for mixing, and the inflation air pump inflates the gas flow channel so that the mixed medicine liquid in the gas bottle flows back to the liquid bag through the liquid flow channel.

[0007] Preferably, the three-way conversion connector includes a gas box, a liquid box, a first connector and a plurality of second connectors, the gas box is hollow to form the gas flow channel, the gas box has a connecting hole connected to the gas flow channel, the vacuum air pump and the inflation air pump are both connected to the connecting hole, the liquid box is jacketed outside the gas box so that the gap between the liquid box and the gas box forms the liquid flow channel, the first connector is used to connect to the liquid bag, the first connector is connected to the liquid flow channel, the second connector is used to connect to the medicine bottle, and the second connector is respectively connected to the gas flow channel and the liquid flow channel.

[0008] Specifically, the first connector is a needle with a single-hole needle tip.

[0009] Specifically, the second connector includes an inner needle and an outer needle, the inner needle is connected to the gas flow channel, a plurality of small connecting holes for connecting to the medicine bottle are provided at the needle tip of the inner needle, the outer needle is outermostly mounted on the inner needle, the outer needle is connected to the liquid flow channel, and a long hole for connecting to the medicine bottle is provided at the needle tip of the outer needle.

[0010] Preferably, the electric suction and medicine swinging device also includes an outer flow channel assembly, the vacuum air pump and the inflation air pump are both connected to the gas flow channel through the outer flow channel assembly, the outer flow channel assembly includes a main flow channel and a branch flow channel, one end of the branch flow channel is connected to the gas flow channel, and the other end of the branch flow channel is connected to the main flow channel, the main flow channel is built into the base, and the vacuum air pump and the inflation air pump are both connected to the main flow channel.

[0011] Preferably, the swing mounting frame includes a long handle and a medicine bottle fixing frame, a hook for hanging a liquid bag is provided on one side of the long handle, and the medicine bottle fixing frame is provided on the other side of the long handle, and a plurality of medicine bottle fixing holes are arranged on the medicine bottle fixing frame. The output end of the swing driving device is connected to the medicine bottle fixing frame, and the medicine bottle fixing frame flips under the drive of the swing driving device so that the position of the medicine bottle fixing frame and the hook is flipped up and down.

[0012] Specifically, the swing mounting frame further includes a reinforcement frame, which is installed on one side of the hook and is used to fix the liquid bag.

[0013] Specifically, the reinforcement frame is an elastic frame with an opening.

[0014] Specifically, the long handle is telescopically arranged.

[0015] Preferably, the swing driving device includes a driving motor, a support rod, a driving gear, a driven gear and a rotating rod, the support rod is installed on the base, the driving motor is installed on the support rod, the driving gear is installed on the output end of the driving motor, the driven gear is connected to the rotating rod, the rotating rod is connected to the swing mounting frame, the driving gear is meshed with the driven gear, and the driving gear rotates under the drive of the driving motor to drive the driven gear to rotate, so that the rotating rod swings.

[0016] Preferably, the negative pressure controlled automatic chemotherapy drug configuration device further comprises a safety isolation cover, which covers the base and wraps around the three-way conversion connector and the electric suction and drug swinging device.

[0017] Specifically, the negative pressure controlled automatic configuration chemotherapy drug device also includes an exhaust fan, which is installed on the base and exhausts air from the safety isolation cover to purify the air inside the safety isolation cover.

[0018] Preferably, the negative pressure controlled automatic configuration chemotherapy drug device also includes a gas capacity adjustment button and a power switch, the gas capacity adjustment button is electrically connected to the vacuum air pump and the inflation air pump respectively, and the power switch is electrically connected to the vacuum air pump and the inflation air pump respectively.

[0019] Compared with the prior art, the negative pressure controlled automatic configuration chemotherapy drug device of the present invention combines a three-way conversion connecting piece and an electric suction and swinging drug device, etc. The electric suction and swinging drug device includes a base, a swing mounting frame, and a swing driving device, a vacuum air pump and an inflation air pump installed on the base. The swing mounting frame is used to carry medicine bottles, liquid bags and three-way conversion connecting piece. The swing mounting frame is installed at the output end of the swing driving device. The swing mounting frame swings under the drive of the swing driving device to switch the positions of the medicine bottles and the liquid bags by rotation. When in the mixed medicine liquid mode, the liquid bag is located above the medicine bottle. When in the medicine liquid reflux mode, the medicine bottle is located above the liquid bag. The three-way conversion connecting piece has a gas flow channel for connecting the medicine bottle and a liquid flow channel for connecting the liquid bag and the medicine bottle. The vacuum air pump and the inflation air pump are both connected to the gas flow channel. When it is necessary to mix the liquid in the liquid bag into the medicine bottle The liquid bag is located above the medicine bottle, and the gas flow channel is evacuated by a vacuum air pump so that the liquid in the liquid bag enters the medicine bottle through the liquid flow channel for mixing. When the mixed liquid medicine needs to be returned to the liquid bag, the medicine bottle is located above the liquid bag, and the gas flow channel is inflated by an air pump so that the mixed liquid medicine in the gas cylinder flows back to the liquid bag through the liquid flow channel. The position switching of the liquid bag and the medicine bottle can utilize the principle of air pressure to reduce the amount of liquid entering the gas flow channel, thereby better isolating the liquid flow channel and the gas flow channel. The machine controls the preparation of chemotherapy drugs, which can effectively control the harm to the human body caused by personnel when preparing chemotherapy drugs. It is safe and hygienic and can effectively reduce the large amount of loss of medical protection equipment. At the same time, the output end of the electric suction and drug swinging device can be connected to multiple three-way conversion connecting vessels at the same time, so that multiple drugs can be prepared at the same time, effectively reducing the configuration of personnel and saving configuration time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the negative pressure controlled automatic configuration chemotherapy drug device of the present invention in the front view direction.

[0021] Figure 2 It is a schematic diagram of the structure of the negative pressure controlled automatic configuration chemotherapy drug device of the present invention behind a hidden safety isolation cover.

[0022] Figure 3 It is a structural schematic diagram of the three-way conversion connector in the negative pressure control automatic configuration chemotherapy drug device of the present invention when it is in use.

[0023] Figure 4 It is another structural schematic diagram of the three-way conversion connector in the negative pressure control automatic configuration chemotherapy drug device of the present invention when it is in use.

[0024] Figure 5 It is a structural schematic diagram of a three-way conversion connecting vessel in a negative pressure controlled automatic configuration chemotherapy drug device of the present invention. DETAILED DESCRIPTION

[0025] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0026] See also Figures 1 to 5 , showing the specific structure of the negative pressure controlled automatic configuration chemotherapy drug device 100 of the present invention. The purpose of the negative pressure controlled automatic configuration chemotherapy drug device 100 of the present invention is to mix the liquid in the liquid bag 20 into the medicine bottle 10, and return the mixed liquid in the medicine bottle 10 to the liquid bag 20. The medical staff directly takes out the mixed liquid bag 20 and uses it for injection. The negative pressure controlled automatic configuration chemotherapy drug device 100 of the present invention includes a three-way conversion connecting vessel 1 and an electric suction and medicine swinging device 2. The electric suction and medicine swinging device 2 includes a base 21, a swing mounting frame 22, and a swing driving device 23, a vacuum air pump 24 and an inflation air pump 25 installed on the base 21. The vacuum air pump 24 and the inflation air pump 25 are built into the base 21. The swing mounting frame 22 is installed on the base 21. The swing mounting frame 22 is used to carry the medicine bottle 10, the liquid bag 20 and the three-way conversion connecting vessel 1, so as to achieve fixation. The swing mounting frame 22 is installed at the output end of the swing driving device 23. The swing mounting frame 22 swings under the drive of the swing driving device 23 to switch the positions of the medicine bottle 10 and the liquid bag 20 by rotation. When in the mixed liquid mode, the liquid bag 20 is located above the medicine bottle 10 (such as Figure 3 As shown), since the density of gas is less than that of liquid, when the medicine bottle 10 is placed in the forward direction, the gas is located above the liquid, which makes it easier for the vacuum air pump 24 to extract the gas first and reduce the liquid flowing to the vacuum air pump 24. It can be understood that since a relatively long outer flow channel component 26 is provided between the vacuum air pump 24 and the medicine bottle 10, even if liquid accidentally flows into the outer flow channel component 26, the accidentally inflowing liquid will also flow back under the inflation action of the inflation air pump 25, so it will not affect the machinery. At the same time, due to gravity, the medicine bottle 10 is located below the liquid bag 20, which also facilitates the liquid to enter the medicine bottle 10. When in the liquid reflux mode, the medicine bottle 10 is located above the liquid bag 20. Since the density of gas is less than that of liquid, when the medicine bottle 10 is placed in the reverse direction, the gas is located above the liquid (as shown). Figure 4 As shown), this makes it easy for the gas injected by the inflation pump 25 to rise to the bottom of the medicine bottle 10, and then use the air pressure to press the liquid back into the liquid bag 20. At the same time, due to gravity, the medicine bottle 10 is located above the liquid bag 20, which also facilitates the liquid to enter the liquid bag 20.

[0027] Please refer to 2 to Figure 4The three-way conversion connector 1 has a gas flow channel 11 for connecting the medicine bottle 10 and a liquid flow channel 12 for connecting the liquid bag 20 and the medicine bottle 10. The vacuum air pump 24 and the inflation air pump 25 are both connected to the gas flow channel 11. When the liquid in the liquid bag 20 needs to be mixed with the medicine bottle 10, the liquid bag 20 is located above the medicine bottle 10. The vacuum air pump 24 evacuates the gas flow channel 11 so that the liquid in the liquid bag 20 enters the medicine bottle 10 through the liquid flow channel 12 for mixing. When the mixed liquid medicine needs to flow back to the liquid bag 20, the medicine bottle 10 is located above the liquid bag 20. The inflation air pump 25 inflates the gas flow channel 11 so that The mixed liquid medicine in the gas cylinder flows back to the liquid bag 20 through the liquid flow channel 12. The position switching of the liquid bag 20 and the medicine bottle 10 can use the principle of air pressure to reduce the liquid from entering the gas flow channel 11, thereby better isolating the liquid flow channel 12 and the gas flow channel 11. The machine controls the preparation of chemotherapy drugs, which can effectively control the harm to the human body caused by personnel when preparing chemotherapy drugs. It is safe and hygienic and can effectively reduce the large-scale loss of medical protection equipment. At the same time, the output end of the electric suction and medicine swing device 2 can be connected to multiple three-way conversion connectors 1 at the same time, so that multiple drugs can be prepared at the same time, effectively reducing the configuration of personnel and saving configuration time. In this embodiment, the three-way conversion connector 1 is set to four, and the four three-way conversion connectors 1 are arranged at equal intervals. The same electric suction and medicine swing device 2 can jointly control the operation of the four three-way conversion connectors 1. More specifically, as follows:

[0028] See also Figures 2 to 5The three-way conversion connector 1 includes a gas box 13, a liquid box 14, a first connector 15 and a plurality of second connectors 16. The arrangement of the plurality of second connectors 16 can simultaneously receive medicines in a plurality of medicine bottles 10, thereby meeting the mixing requirements. The gas box 13 is hollow to form a gas flow channel 11. The gas box 13 has a connecting hole 131 connected to the gas flow channel 11. The vacuum pump 24 and the inflation pump 25 are both connected to the connecting hole 131. The liquid box 14 is placed outside the gas box 13 so that the gap between the liquid box 14 and the gas box 13 forms a liquid flow channel 12. The first connector 15 is used to connect to the liquid bag 20, the first connector 15 is connected to the liquid flow channel 12, the second connector 16 is used to connect to the medicine bottle 10, and the second connector 16 is respectively connected to the gas flow channel 11 and the liquid flow channel 12. Specifically, the first connector 15 is a needle with a single-hole needle tip, but is not limited thereto. The second connector 16 includes an inner needle 161 and an outer needle 162. The inner needle 161 is connected to the gas flow channel 11. A plurality of small connecting holes 1611 for connecting with the medicine bottle 10 are provided at the needle tip of the inner needle 161. The outer needle 162 is sleeved on the inner needle 161. The length of the outer needle 162 is smaller than that of the inner needle 161. When in use, the inner needle 161 keeps a certain distance from the bottom of the medicine bottle 10. The outer needle 162 is connected to the liquid flow channel 12. A long hole 1621 for connecting with the medicine bottle 10 is provided at the needle tip of the outer needle 162. When it is necessary to mix the liquid in the liquid bag 20 with the medicine bottle 10, the liquid bag 20 is located above the medicine bottle 10, and the vacuum air pump 24 evacuates the gas flow channel 11, the gas in the medicine bottle 10, and the medicine bottle 10 is in a negative pressure state. The liquid in the liquid bag 20 passes through the first joint 15, the liquid flow channel 12, the head of the outer needle 162, and the elongated hole 1621 of the outer needle 162 in sequence and enters the medicine bottle 10 for mixing. When it is necessary to return the mixed liquid medicine to the liquid bag 20, the medicine The bottle 10 is located above the liquid bag 20. By inflating the gas channel 11 with the air pump 25, the gas sequentially passes through the main channel 261 of the outer channel assembly 26, the branch channel 262, the gas channel 11, the head of the inner needle 161 and the connecting hole 1611 of the inner needle 161 into the medicine bottle 10, while the liquid sequentially enters the elongated hole 1621 of the outer needle 162, the head of the outer needle 162, the liquid channel 12 and the first connector 15 and flows back to the liquid bag 20.

[0029] See also Figures 1 to 3The electric suction medicine swing device 2 also includes an outer flow channel component 26, and the vacuum air pump 24 and the inflation air pump 25 are both connected to the gas flow channel 11 through the outer flow channel component 26, and the outer flow channel component 26 includes a main flow channel 261 and a branch flow channel 262. In this embodiment, four three-way conversion connectors 1 are provided, and correspondingly, four groups of branch flow channels 262 are also provided, but not limited to this, one end of the branch flow channel 262 is connected to the gas flow channel 11, and the other end of the branch flow channel 262 is connected to the main flow channel 261, and the main flow channel 261 is built in the base 21, and the vacuum air pump 24 and the inflation air pump 25 are both connected to the main flow channel 261. Preferably, the vacuum air pump 24 and the inflation air pump 25 are arranged on the left and right along the direction of the base 21.

[0030] See also Figure 1 to Figure 2 The swing mounting frame 22 includes a long handle 221 and a medicine bottle fixing frame 222. A hook 223 for hanging the liquid bag 20 is provided on one side of the long handle 221. A medicine bottle fixing frame 222 is provided on the other side of the long handle 221. A plurality of medicine bottle fixing holes 2221 are arranged on the medicine bottle fixing frame 222. The medicine bottle 10 can be inserted into the medicine bottle fixing hole 2221. The output end of the swing driving device 23 is connected to the medicine bottle fixing frame 222. The medicine bottle fixing frame 222 is turned over under the drive of the swing driving device 23, so that the positions of the medicine bottle fixing frame 222 and the hook 223 are turned upside down. Specifically, the swing mounting frame 22 also includes a reinforcement frame 224, which is installed on one side of the hook 223, and the reinforcement frame is used to fix the liquid bag 20. The reinforcement frame is an elastic frame with an opening. The setting of the opening can also facilitate the entry of the liquid bag 20. The liquid bag 20 can be clamped by elasticity to achieve fixation. Preferably, the long handle 221 is telescopically arranged so that the distance between the liquid bag 20 and the medicine bottle 10 can be adjusted. A distance adjustment structure can also be provided between the medicine bottles 10 to adjust the distance between the medicine bottles 10 as needed to meet medical needs.

[0031] See also Figure 1 to Figure 2 The swing driving device 23 includes a driving motor (not shown), a support rod 232, a driving gear 233, a driven gear 234 and a rotating rod 231. The support rod 232 is installed on the base 21, the driving motor is installed on the support rod 232, the driving gear 233 is installed on the output end of the driving motor, the driven gear 234 is connected to the rotating rod 231, the rotating rod 231 is connected to the swing mounting frame 22, the driving gear 233 is meshed with the driven gear 234, and the driving gear 233 rotates under the drive of the driving motor to drive the driven gear 234 to rotate, so that the rotating rod 231 swings, and the position switching between the liquid bag 20 and the medicine bottle 10 is achieved by the rotation of the rotating rod 231.

[0032] See also Figure 1 to Figure 2The negative pressure controlled automatic dispensing chemotherapy drug device 100 of the present invention further comprises a safety isolation cover 3 and an exhaust fan 4. The safety isolation cover 3 covers the base 21 and covers the three-way conversion connector 1 and the electric suction and drug swing device 2. The exhaust fan 4 is installed on the base 21 and exhausts the safety isolation cover 3 to purify the air in the safety isolation cover 3, thereby preventing bacteria and the like from infecting the drugs inside the device.

[0033] See also Figure 2 The negative pressure controlled automatic configuration chemotherapy drug device 100 of the present invention also includes a gas capacity adjustment button 5 and a power switch 6. The gas capacity adjustment button 5 is electrically connected to the vacuum air pump 24 and the inflation air pump 25 respectively, and the power switch 6 is electrically connected to the vacuum air pump 24 and the inflation air pump 25 respectively.

[0034] In summary, please refer to Figures 1 to 5 The use process of the negative pressure controlled automatic configuration chemotherapy drug device 100 of the present invention is described in detail:

[0035] The first joint 15 is connected to the liquid bag 20, the second joint 16 is connected to the medicine bottle 10, the medicine bottle 10 and the liquid bag 20 are fixed, the power switch 6 button is turned on, and the swing mounting frame 22 swings under the drive of the swing driving device 23 to switch the positions of the medicine bottle 10 and the liquid bag 20 by rotation. When the liquid in the liquid bag 20 needs to be mixed with the medicine bottle 10, the liquid bag 20 is located above the medicine bottle 10, and the pressure and capacity of the vacuum air pump 24 are adjusted. The vacuum air pump evacuates the gas flow channel 11, the gas in the medicine bottle 10, and the medicine bottle 10 is in a negative pressure state. The liquid in the liquid bag 20 passes through the first joint 15, the liquid flow channel 12, the head of the outer needle 162, and the elongated hole 1 of the outer needle 162 in sequence. 621 enters the medicine bottle 10 for mixing. After the medicine liquid is completely dissolved, when it is necessary to return the mixed medicine liquid to the liquid bag 20, the swing mounting frame 22 swings under the drive of the swing driving device 23. The medicine bottle 10 is located above the liquid bag 20. The gas flow channel 11 is inflated by the inflation pump 25. The gas passes through the main channel 261, the branch channel 262, the gas flow channel 11, the head of the inner needle 161 and the connecting hole 1611 of the inner needle 161 of the outer flow channel assembly 26 and enters the medicine bottle 10 in turn, and the liquid enters the elongated hole 1621 of the outer needle 162, the head of the outer needle 162, the liquid flow channel 12 and the first connector 15 in turn and flows back to the liquid bag 20. The chemotherapy drug configuration is completed.

[0036] By combining the three-way conversion manifold 1 and the electric suction medicine swing device 2, the electric suction medicine swing device 2 includes a base 21, a swing mounting frame 22, and a swing driving device 23, a vacuum pump 24 and an air pump 25 installed on the base 21. The swing mounting frame 22 is used to carry the medicine bottle 10, the liquid bag 20 and the three-way conversion manifold 1. The swing mounting frame 22 is installed at the output end of the swing driving device 23. The swing mounting frame 22 swings under the drive of the swing driving device 23 to switch the medicine bottle 10 and the liquid bag 20 by rotating. In the liquid mixing mode, the liquid bag 20 is located above the medicine bottle 10. In the liquid reflux mode, the medicine bottle 10 is located above the liquid bag 20. The three-way conversion connector 1 has a gas flow channel 11 for connecting the medicine bottle 10 and a liquid flow channel 12 for connecting the liquid bag 20 and the medicine bottle 10. The vacuum air pump 24 and the inflation air pump 25 are both connected to the gas flow channel 11. When the liquid in the liquid bag 20 needs to be mixed with the medicine bottle 10, the liquid bag 20 is located above the medicine bottle 10, and the vacuum air pump 24 evacuates the gas flow channel 11 to make the gas flow channel 11 The liquid in the liquid bag 20 enters the medicine bottle 10 through the liquid flow channel 12 for mixing. When the mixed liquid medicine needs to be returned to the liquid bag 20, the medicine bottle 10 is located above the liquid bag 20, and the gas flow channel 11 is inflated by the gas pump 25 so that the mixed liquid medicine in the gas bottle flows back to the liquid bag 20 through the liquid flow channel 12. The position switching of the liquid bag 20 and the medicine bottle 10 can use the principle of air pressure to reduce the liquid from entering the gas flow channel 11, thereby better isolating the liquid flow channel 12 and the gas flow channel 11. The machine controls the preparation of chemotherapy drugs, and the configuration of drugs is The equipment is completed automatically, and the nurse can avoid contact with the aerosol splashed during the puncture of the medicine bottle 10, which greatly reduces the occupational injuries caused by the medicine dispensing process, protects the health of nurses, and can effectively control the damage to the human body caused by personnel when preparing chemotherapy drugs. It is safe and hygienic and can effectively reduce the large amount of loss of medical protection equipment. At the same time, the prepared drugs are quantitatively extracted under negative pressure, and the needle does not need to repeatedly puncture the bottle stopper to avoid the contact of the drug liquid with the air, avoid the harm of residual drugs to the staff and the environment, and reduce the consumption of protective materials. In addition, the output end of the electric suction and medicine swinging device 2 can be connected to multiple three-way conversion connectors 1 at the same time, so that multiple drugs can be prepared at the same time, effectively reducing the configuration of personnel and saving configuration time.

[0037] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A negative pressure controlled automatic chemotherapy drug dispensing device, characterized in that: The invention comprises a three-way conversion connecting piece and an electric suction and medicine swinging device, wherein the electric suction and medicine swinging device comprises a base, a swing mounting frame, and a swing driving device, a vacuum air pump and an inflation air pump installed on the base, wherein the swing mounting frame is used to carry a medicine bottle, a liquid bag and the three-way conversion connecting piece, wherein the swing mounting frame is installed at the output end of the swing driving device, wherein the swing mounting frame swings under the drive of the swing driving device to switch the positions of the medicine bottle and the liquid bag by rotation, wherein the three-way conversion connecting piece has a gas flow channel for connecting the medicine bottle and a liquid flow channel for connecting the liquid bag and the medicine bottle, wherein the vacuum air pump and the inflation air pump are both connected to the gas flow channel The gas flow channel is connected, and the vacuum air pump evacuates the gas flow channel so that the liquid in the liquid bag enters the medicine bottle through the liquid flow channel for mixing, and the inflation air pump inflates the gas flow channel so that the mixed medicine liquid in the gas bottle flows back to the liquid bag through the liquid flow channel; the three-way conversion connector includes a gas box, a liquid box, a first joint and a plurality of second joints, the gas box is hollow to form the gas flow channel, the gas box has a connecting hole connected to the gas flow channel, the vacuum air pump and the inflation air pump are both connected to the connecting hole, and the liquid box is sheathed outside the gas box so that the liquid box and the gas box can be connected. The gap between the two forms the liquid flow channel, the first joint is used to connect to the liquid bag, the first joint is communicated with the liquid flow channel, the second joint is used to connect to the medicine bottle, and the second joint is communicated with the gas flow channel and the liquid flow channel respectively; the electric suction and swing medicine device also includes an outer flow channel component, the vacuum air pump and the inflation air pump are both communicated with the gas flow channel through the outer flow channel component, the outer flow channel component includes a main flow channel and a branch flow channel, one end of the branch flow channel is communicated with the gas flow channel, the other end of the branch flow channel is communicated with the main flow channel, the main flow channel is built into the base, the vacuum air pump and the inflation air pump are both connected to the The main channel is connected; the swing mounting frame includes a long handle and a medicine bottle fixing frame, one side of the long handle is provided with a hook for hanging the liquid bag, the other side of the long handle is provided with the medicine bottle fixing frame, a plurality of medicine bottle fixing holes are arranged on the medicine bottle fixing frame, the output end of the swing driving device is connected to the medicine bottle fixing frame, and the medicine bottle fixing frame flips under the drive of the swing driving device, so that the position of the medicine bottle fixing frame and the hook is flipped up and down; the swing mounting frame also includes a reinforcement frame, the reinforcement frame is installed on one side of the hook, and the reinforcement frame is used to fix the liquid bag; the reinforcement frame is an elastic frame with an opening.

2. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: The first connector is a needle with a single-hole needle tip.

3. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: The second connector includes an inner needle and an outer needle, the inner needle is connected to the gas flow channel, a plurality of small connecting holes for connecting to the medicine bottle are provided at the needle tip of the inner needle, the outer needle is outermostly mounted on the inner needle, the outer needle is connected to the liquid flow channel, and a long hole for connecting to the medicine bottle is provided at the needle tip of the outer needle.

4. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: The long handle is telescopically arranged.

5. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: The swing driving device includes a driving motor, a support rod, a driving gear, a driven gear and a rotating rod, wherein the support rod is installed on the base, the driving motor is installed on the support rod, the driving gear is installed on the output end of the driving motor, the driven gear is connected to the rotating rod, the rotating rod is connected to the swing mounting frame, the driving gear is meshed with the driven gear, and the driving gear rotates under the drive of the driving motor to drive the driven gear to rotate, so that the rotating rod swings.

6. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: It also includes a safety isolation cover, which covers the base and wraps around the three-way conversion connector and the electric suction and medicine-swinging device.

7. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 6, characterized in that: It also includes an exhaust fan, which is installed on the base and exhausts air to the safety isolation cover to purify the air in the safety isolation cover.

8. The negative pressure controlled automatic dispensing chemotherapy drug device according to claim 1, characterized in that: It also includes a gas capacity adjustment button and a power switch, wherein the gas capacity adjustment button is electrically connected to the vacuum air pump and the inflation air pump respectively, and the power switch is electrically connected to the vacuum air pump and the inflation air pump respectively.

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