Intravenous drug preparation device

Abstract

The utility model provides an intravenous medicine preparation device which comprises a conveying pipe, a medicine suction needle head, a medicine filling needle head, an exhaust valve and a peristaltic pump, one part or one section of the conveying pipe is installed in a pump head of the peristaltic pump, and the medicine suction needle head and the medicine filling needle head are connected to the two ends of the conveying pipe respectively. The medicine filling needle head comprises a needle seat and a puncture needle head which are connected, the exhaust valve comprises a valve seat, a valve cover and a connecting belt, the valve seat is fixedly installed on the needle seat, an exhaust hole is formed in the valve seat, a medicine dispensing channel and an exhaust channel are formed in the medicine filling needle head, one end of the medicine dispensing channel is communicated with an inner cavity of the conveying pipe, and the other end of the medicine dispensing channel extends out of the puncture needle head. One end of the exhaust channel is communicated with the exhaust hole, and the other end extends out of the puncture needle; the exhaust channel is arranged to exhaust the infusion bottle / bag, pressure inside and outside the infusion bottle / bag is balanced, and the negative effects that liquid cannot be added continuously due to expansion of the infusion bottle / bag in the intravenous medicine preparation process, and even liquid medicine overflows are avoided.

Description

Technical Field

[0001] The utility model relates to an intravenous drug preparation device, and particularly relates to the technical field of medical devices. Background Art

[0002] Intravenous infusion is a widely used clinical treatment method, and intravenous drug preparation is an essential task before intravenous infusion. It mainly injects the liquid medicine or medicament in an ampoule bottle or a vial into an infusion bottle / bag to obtain a mixed liquid medicine for intravenous injection. Currently, the intravenous drug preparation center of the inventor's unit conducts intravenous drug preparation. Its specific principle is similar to a foot-controlled reciprocating suction type drug preparation device disclosed in the utility model patent 201720519380.9, which consists of a main machine (peristaltic pump), a foot-controlled switch, and a special drug preparation needle. The main machine (peristaltic pump) mainly consists of a motor, a control circuit board, and a pump head that can peristalsis forward and backward. The foot-controlled switch is bidirectional and used to control the forward and backward peristalsis of the pump head of the main machine. The drug preparation needle consists of a peristaltic hose with puncture needles at both ends. Stepping on the foot-controlled switch can realize the forward and reverse peristalsis of the pump head of the main machine to complete the transfer of the liquid medicine between the liquid bag and the medicine bottle. The principle that the peristaltic pump can drive the liquid movement in the delivery tube is as shown in the attached Figure 1 description: The delivery tube is installed in the installation groove of the pump head. The motor drives the wheel frame to rotate, and the rollers installed on the outside of the wheel frame rotate synchronously and squeeze the delivery tube, so that a self-priming pressure is formed inside the delivery tube to suck the liquid medicine into the delivery tube. As the rollers continue to rotate, the liquid medicine is transported to the liquid outlet end.

[0003] However, during the process of using the above method for intravenous drug preparation, medical staff found that since the infusion bottle / bag is initially in a sealed state, as the liquid medicine is continuously injected into the infusion bottle / bag, air may also enter the infusion bottle / bag through the delivery tube when injecting the liquid medicine, forming a positive pressure in the sealed infusion bottle / bag. Moreover, the more liquid medicine and air are injected, the greater the pressure, which will lead to the adverse consequences that the infusion bottle / bag expands and the liquid medicine cannot be added, or even the liquid medicine overflows. Currently, in order to solve this problem, the inventor has to add a manual air exhaust step in practice. Medical staff insert a syringe barrel with a needle into the infusion bottle / bag for air exhaust to balance the pressure inside and outside the infusion bottle / bag. This additional manual air exhaust operation step not only increases the risk of rubber plug debris generation in the infusion bottle / bag, the risk of contamination of the infusion bottle / bag by the needle, the workload and time cost of medical staff, but also increases the risk of occupational injuries such as puncture wounds for medical staff. Summary of the Invention

[0004] The purpose of the present utility model is to solve the problems mentioned in the background technology and provide an intravenous drug preparation device. The main innovation of this device lies in the provision of an exhaust valve for exhausting air from the infusion bottle / bag. Without increasing the operation steps of medical staff, it can well exhaust the air from the infusion bottle / bag to balance the pressure inside and outside the infusion bottle / bag.

[0005] The present utility model adopts the following technical solutions: An intravenous drug preparation device includes a delivery tube, a drug aspiration needle, a drug perfusion needle, an exhaust valve and a peristaltic pump. The delivery tube is installed inside the pump head of the peristaltic pump. The peristaltic pump is used to drive the liquid medicine in the delivery tube to flow towards one end of the delivery tube. The drug aspiration needle and the drug perfusion needle are respectively connected to both ends of the delivery tube;

[0006] The drug perfusion needle includes a needle seat and a puncture needle connected to each other. The exhaust valve includes a valve seat, a valve cover and a connecting band connected between the valve seat and the valve cover. The valve seat is fixedly installed on the needle seat. An exhaust hole is provided on the valve seat. The valve cover is used to close the exhaust hole. A medicine preparation channel and an exhaust channel are provided inside the drug perfusion needle. One end of the medicine preparation channel is communicated with the inner cavity of the delivery tube, and the other end extends out of the puncture needle. One end of the exhaust channel is communicated with the exhaust hole, and the other end extends out of the puncture needle.

[0007] Further, the exhaust valve further includes a waterproof breathable membrane and a pressing ring. A circular boss is provided below the exhaust hole. The outer diameter of the pressing ring is greater than or equal to the inner diameter of the exhaust hole. The waterproof breathable membrane is arranged on the circular boss, and after being sleeved into the exhaust hole through the pressing ring, the waterproof breathable membrane is clamped and fixedly installed between the boss and the pressing ring.

[0008] Further, the drug aspiration needle includes a suction needle seat and a suction needle connected to each other. The length of the suction needle is greater than or equal to the length of the puncture needle. The puncture needle is a steel needle with a pointed front end. The suction needle is a steel needle with a pointed front end or a rigid plastic tube with a flat front surface.

[0009] Preferably, the front end of the puncture needle is a tip. The other end of the medicine preparation channel extends out of the tip of the puncture needle. The other end of the exhaust channel extends out of the puncture needle from the side of the puncture needle.

[0010] Further, the intravenous drug preparation device further includes a base, an ampoule rack and an infusion bottle / bag limiting component. An installation groove for placing the peristaltic pump is provided in the middle of the top surface of the base. The ampoule rack is fixedly installed on the left side of the top surface of the base. The ampoule rack includes two vertical plates spaced a certain distance apart and a horizontal plate fixedly installed on the tops of the two vertical plates. A plurality of insertion holes are evenly provided on the horizontal plate. The infusion bottle / bag limiting component is installed on the right side of the top surface of the base. The infusion bottle / bag limiting component is used to fixedly install the infusion bottle / bag and adjust the angle of the infusion bottle / bag.

[0011] Further, on the right side of the top surface of the base, two support plates are fixedly provided at an interval. An axial hole is provided in the upper part of the support plate. The infusion bottle / bag limiting assembly includes an infusion bottle / bag carrier plate, rotating shafts and threaded rods fixedly provided on both sides of the infusion bottle / bag carrier plate, and locking nuts screwed on the threaded rods. The rotating shafts and the threaded rods are respectively sleeved and installed in an axial hole. An infusion bottle / bag placement groove is provided on the top surface of the infusion bottle / bag carrier plate. One end of the infusion bottle / bag placement groove extends out of the side wall of the infusion bottle / bag carrier plate, and a closing opening for preventing the infusion bottle / bag from slipping off the infusion bottle / bag placement groove is provided at the end where the infusion bottle / bag placement groove extends out of the side wall of the infusion bottle / bag carrier plate.

[0012] Further, the infusion bottle / bag limiting assembly further includes a fixing belt for fixing the infusion bottle / bag in the infusion bottle / bag placement groove. The fixing belt is an annular elastic belt, and the annular elastic belt is tightened outside the infusion bottle / bag carrier plate.

[0013] In the venous drug preparation device of the present utility model, the delivery tube is installed in the pump head of the peristaltic pump. The rotation of the roller in the pump head squeezes the delivery tube, driving the liquid medicine in the delivery tube to flow towards one end of the delivery tube, realizing efficient venous drug preparation; at the same time, an exhaust valve is provided on the drug perfusion needle head, and the infusion bottle / bag is exhausted through a separately provided exhaust channel to balance the pressure inside and outside the infusion bottle / bag, thereby solving the adverse consequences that the infusion bottle / bag expands and cannot continue to add liquid or even the liquid medicine overflows during the venous drug preparation process. Description of the Drawings

[0014] Attached Figure 1 is the schematic diagram of the movement of the liquid in the delivery tube driven by the peristaltic pump.

[0015] Attached Figure 2 is the schematic plan view of Embodiment 1 of the present utility model.

[0016] Attached Figure 3 is the schematic diagram of the structure of the drug perfusion needle head 3 and the exhaust valve 4 in the present utility model.

[0017] Attached Figure 4 is the present utility model attached Figure 4 is the enlarged schematic diagram of part A in the present utility model.

[0018] Attached Figure 5 is the cross-sectional schematic diagram of the setting positions of the medicine dispensing channel 6 and the exhaust channel 7 in the drug perfusion needle head 3 of the present utility model.

[0019] Attached Figure 6 is the schematic diagram of the structure of Embodiment 2 of the present utility model.

[0020] Attached Figure 7It is a schematic structural diagram after removing the infusion bottle / bag limiting component 10 in Embodiment 2 of the present utility model.

[0021] Appendix Figure 8 It is a schematic structural diagram of the infusion bottle / bag limiting component 10 in the present utility model.

[0022] Explanation of reference numerals: conveying tube 1, drug suction needle 2, drug perfusion needle 3, needle seat 31, puncture needle 32, exhaust valve 4, valve seat 41, exhaust hole 411, boss 412, valve cover 42, connecting band 43, waterproof and breathable membrane 44, pressing ring 45, peristaltic pump 5, medicine preparation channel 6, exhaust channel 7, base 8, installation groove 81, support plate 82, shaft hole 821, ampoule rack 9, insertion hole 91, infusion bottle / bag limiting component 10, infusion bottle / bag carrier plate 101, infusion bottle / bag placement groove 1011, rotating shaft 102, threaded rod 103, locking nut 104, fixing band 105. Detailed implementation manners

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. The following further describes the inventive content in conjunction with the drawings:

[0024] Embodiment 1

[0025] Referring to the appendix of the specification Figure 2 , a venous drug preparation device includes a conveying tube 1, a drug suction needle 2, a drug perfusion needle 3, an exhaust valve 4 and a peristaltic pump 5. The drug suction needle 2 and the drug perfusion needle 3 are respectively connected to both ends of the conveying tube 1. A part or a section of the conveying tube 1 is installed in the pump head of the peristaltic pump 5, and the exhaust valve 4 is installed on the drug perfusion needle 3; the peristaltic pump used in the venous drug preparation center of the inventor's unit, that is, the peristaltic pump 5 and the foot control switch for controlling the peristaltic pump 5 described in this patent, are purchased finished products. Their structures, principles and usage methods are well-known common knowledge to those skilled in the relevant fields, so they will not be elaborated here;

[0026] Specifically related to this patent, referring to the appendix of the specification Figure 1, the delivery tube 1 is installed in the mounting groove of the pump head of the peristaltic pump 5. The motor drive wheel of the peristaltic pump 5 rotates, and the rollers installed on the outside of the wheel frame rotate synchronously, squeezing the delivery tube 1 to form a self-priming pressure inside the delivery tube 1, sucking the liquid medicine into the delivery tube 1. As the rollers continue to rotate, the liquid medicine at one end of the aspiration needle 2 is transported to one end of the drug perfusion needle 3, or the liquid medicine at one end of the drug perfusion needle 3 is transported to one end of the aspiration needle 2; the peristaltic pump 5 is equipped with a foot control switch (which belongs to the accessories of the peristaltic pump 5), and the forward and reverse peristalsis of the pump head can be controlled through the foot control switch to switch the pumping direction of the liquid medicine.

[0027] Refer to the attached instruction manual Figure 3 , 4 , 5, the drug perfusion needle 3 includes a needle base 31 and a puncture needle 32 connected to each other. The needle base 31 is connected to the delivery tube 1. A medicine dispensing channel 6 is opened inside the needle base 31 and the puncture needle 32. One end of the medicine dispensing channel 6 is communicated with the inner cavity of the delivery tube 1, and the other end of the medicine dispensing channel 6 extends out of the puncture needle 32. The drug aspiration needle 2 includes a suction needle base and a suction needle connected to each other. The needle base is connected to the delivery tube 1. The suction needle base and the suction needle are of a hollow tubular structure, and the internal hollow structure thereof is communicated with the inner cavity of the delivery tube 1. The medicine dispensing channel 6, the inner cavity of the delivery tube 1 and the internal hollow structure of the drug aspiration needle 2 together constitute the liquid medicine transmission channel;

[0028] In order to prevent needle stick injuries and protect the suction needle and the puncture needle 32, a detachable needle cap is sleeved outside the suction needle and the puncture needle 32;

[0029] The exhaust valve 4 includes a valve seat 41, a valve cover 42 and a connecting band 43 connected between the valve seat 41 and the valve cover 42. The valve seat 41 is fixedly installed on the needle base 31. An exhaust hole 411 is opened on the valve seat 41. The valve cover 42 is used to close the exhaust hole 411. An exhaust channel 7 that is not communicated with the medicine dispensing channel 6 is opened in the needle base 31 and the puncture needle 32, and the inner diameter of the medicine dispensing channel 6 is larger than the inner diameter of the exhaust channel 7. One end of the exhaust channel 7 is communicated with the exhaust hole 411, and the other end extends out of the puncture needle 32 from the side of the puncture needle 32. The advantage of arranging the vent of the exhaust channel 7 on the side of the puncture needle 32 is that when the liquid medicine in the infusion bottle is more and submerges the front end of the puncture needle 32, the vent of the exhaust channel 7 is at the rear side of the puncture needle 32, which can ensure normal exhaust.

[0030] Since during use, the puncture needle 32 only needs to puncture into the rubber stopper of the infusion bottle / bag, while the aspiration needle needs to puncture into the rubber stopper of the vial when aspirating the liquid medicine in the vial, and when aspirating the liquid medicine in the ampoule bottle, it needs to reach the bottom of the ampoule bottle to aspirate the liquid medicine completely. Therefore, the length of the aspiration needle is greater than or equal to the length of the puncture needle 32. The puncture needle 32 is a steel needle with a pointed tip at the front end, and the aspiration needle is a steel needle with a pointed tip at the front end (for vials) or a rigid plastic tube with a flat front end face (for ampoule bottles).

[0031] The inventor found that during the drug preparation process, if the infusion bottle / bag is tilted, the liquid medicine in the infusion bottle / bag may leak along the exhaust passage 7 and the exhaust hole 411. At the same time, since the exhaust passage 7 and the exhaust hole 411 are in a completely open state, external bacteria, dust, etc. may enter the infusion bottle / bag along the exhaust passage 7 and the exhaust hole 411. Therefore,

[0032] Refer to the attached drawings of the specification Figure 4 , the exhaust valve 4 further includes a waterproof and breathable membrane 44 and a pressing ring 45. An annular boss 412 is fixedly provided below the exhaust hole 411. The outer diameter of the pressing ring 45 is greater than or equal to the inner diameter of the exhaust hole 411, so that the pressing ring 45 can be horizontally and tightly sleeved into the exhaust hole 411. The waterproof and breathable membrane 44 is arranged on the annular boss 412, and after the pressing ring 45 is sleeved into the exhaust hole 411, the waterproof and breathable membrane 44 is clamped and fixed between the boss 412 and the pressing ring 45;

[0033] The waterproof and breathable membrane 44 is an eptfe material ventilation, bacteria isolation and filtration breathable membrane with uniform pore size distribution, large gas throughput and high porosity. Its main functions are ventilation, water blocking, and filtering bacteria and dust in the gas.

[0034] The usage method of the intravenous drug preparation device in this embodiment is as follows:

[0035] When preparing the liquid medicine in the ampoule bottle: Install the delivery tube in the pump head of the peristaltic pump 5, puncture the drug perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag, place the infusion bottle / bag upright on the operating table, break all the ampoule bottles to be prepared along the bottle neck and arrange them neatly on the operating table, insert the drug aspiration needle 2 into the bottom of each ampoule bottle one by one, and simultaneously control the peristaltic pump 5 to start by stepping on the foot control switch to aspirate the liquid medicine in the ampoule bottle into the infusion bottle / bag; All puncture operations are carried out after disinfection.

[0036] When configuring liquid medicine in vials: Install the delivery tube in the pump head of the peristaltic pump 5, puncture the medicine perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag, place the infusion bottle / bag upright on the operating table, open the aluminum-plastic combination caps of all the vials to be configured and arrange them neatly on the operating table. After disinfecting the vial mouths, puncture the medicine suction needles 2 one by one into the rubber stoppers of the vials, then invert the vials, and simultaneously start the peristaltic pump 5 by controlling the foot control switch to suck the liquid medicine in the vials into the infusion bottle / bag.

[0037] When configuring powdered medicine in vials: Install the delivery tube in the pump head of the peristaltic pump 5, puncture the medicine perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag, open the aluminum-plastic combination caps of all the vials to be configured and arrange them neatly on the operating table. The medical staff use the valve cap 42 to seal the vent hole 411, invert the infusion bottle / bag, puncture the medicine suction needles 2 one by one into the rubber stoppers of the disinfected vials, and simultaneously start the peristaltic pump 5 by controlling the foot control switch to quantitatively inject the liquid medicine in the infusion bottle / bag into the vials;

[0038] After all the injections are completed, shake the vials to fully dissolve the powdered medicine and arrange them neatly on the operating table. Then place the infusion bottle / bag upright on the operating table, open the valve cap 42, puncture the medicine suction needles 2 one by one into the rubber stoppers of the disinfected vials, then invert the vials, and simultaneously start the peristaltic pump 5 by controlling the foot control switch to suck the liquid medicine in the vials into the infusion bottle / bag; All puncture operations are carried out after disinfection. The vials and the infusion bottle / bag are default to be disinfected before the puncture operation.

[0039] Example 2

[0040] When performing intravenous drug configuration for ampoules, the medical staff will first break all the ampoules along the neck and arrange them neatly on the operating table, and then aspirate and configure the liquid medicine in the ampoules one by one. Since the ampoules are relatively thin, they are easily toppled when placed on the operating table, causing the liquid medicine to overflow; At the same time, when configuring powdered medicine in vials, it is necessary to first inject the liquid medicine in the infusion bottle / bag into the vial to dissolve the powdered medicine and then aspirate it back into the infusion bottle / bag. Then, during this process, when injecting the liquid medicine in the infusion bottle / bag into the vial, the infusion bottle / bag needs to be inverted, and when aspirating it back into the infusion bottle / bag after dissolving the powdered medicine, the infusion bottle / bag needs to be upright again to exhaust air normally. Therefore, to solve the above problems and facilitate the operation of the medical staff,

[0041] Based on Example 1, referring to the attached drawings of the specification Figure 6 、 7, the intravenous drug dispensing device further includes a base 8, an ampoule holder 9 and an infusion bottle / bag limiting assembly 10. An installation groove 81 for placing the peristaltic pump 5 is formed in the middle of the top surface of the base 8. The ampoule holder 9 is fixedly installed on the left side of the top surface of the base 8. The ampoule holder 9 includes two vertical plates spaced apart by a certain distance and a cross plate fixedly installed at the tops of the two vertical plates. A plurality of insertion holes 91 are uniformly formed in the cross plate. The ampoule bottle broken along the bottle neck can be inserted into the insertion holes 91 to prevent the ampoule bottle from tipping over; Two support plates 82 spaced apart by a certain distance are fixedly provided on the right side of the top surface of the base 8, and a shaft hole 821 is formed in the upper part of the support plate 82.

[0042] Refer to the attached drawings of the specification Figure 6 , 8 , the infusion bottle / bag limiting assembly 10 includes an infusion bottle / bag carrier plate 101, rotating shafts 102 and threaded rods 103 fixedly provided on both sides of the infusion bottle / bag carrier plate 101, locking nuts 104 screwed onto the threaded rods 103, and fixing belts 105. The rotating shafts 102 and the threaded rods 103 are respectively sleeved and installed in a shaft hole 821 (the inner diameter of the shaft hole 821 is larger than the outer diameters of the rotating shafts 102 and the threaded rods 103), so that the infusion bottle / bag carrier plate 101 can be turned around the shaft hole 821. By tightening the locking nut 104, the turning angle of the infusion bottle / bag carrier plate 101 can be positioned after the end face of the locking nut 104 abuts against the side face of the support plate 82;

[0043] An infusion bottle / bag placement groove 1011 is formed in the top surface of the infusion bottle / bag carrier plate 101. One end of the infusion bottle / bag placement groove 1011 extends out of the side wall of the infusion bottle / bag carrier plate 101, and a closing opening for preventing the infusion bottle / bag from slipping off the infusion bottle / bag placement groove 1011 is provided at the end of the infusion bottle / bag placement groove 1011 extending out of the side wall of the infusion bottle / bag carrier plate 101. After the infusion bottle / bag is placed into the infusion bottle / bag placement groove 1011, the bottle mouth of the infusion bottle / bag is at the closing opening position and extends out of the side wall of the infusion bottle / bag carrier plate 101;

[0044] The fixing belt 105 is an annular elastic belt. The annular elastic belt is tightened outside the infusion bottle / bag carrier plate 101. After the infusion bottle / bag is placed into the infusion bottle / bag placement groove 1011, it is tightened outside the infusion bottle / bag carrier plate 101 and the infusion bottle / bag through the fixing belt 105, so that the infusion bottle / bag is fixed in the infusion bottle / bag placement groove 1011 to prevent the infusion bottle / bag from falling out of the infusion bottle / bag placement groove 1011.

[0045] The usage method of the intravenous drug dispensing device in this embodiment is as follows:

[0046] When configuring liquid medicine in an ampoule bottle: Place the bottom of the peristaltic pump 5 in the installation groove 81, place the infusion bottle / bag in the infusion bottle / bag placement groove 1011, and make the mouth of the infusion bottle / bag in a closed position and extend out of the side wall of the infusion bottle / bag carrier plate 101. Fasten it tightly to the outside of the infusion bottle / bag carrier plate 101 and the infusion bottle / bag through the fixing strap 105 to fix the infusion bottle / bag in the infusion bottle / bag placement groove 1011. Loosen the locking nut 104 to make the infusion bottle / bag stand upright, and then tighten the locking nut 104 to position the infusion bottle / bag. Install the delivery tube in the pump head of the peristaltic pump 5, and puncture the medicine perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag. Break all the ampoule bottles that need to be configured along the neck and neatly insert them into the insertion holes 91 of the ampoule rack 9. Take each ampoule bottle one by one and insert the medicine suction needle 2 into the bottom of each ampoule bottle one by one, and simultaneously control the start of the peristaltic pump 5 through the foot control switch to suck the liquid medicine in the ampoule bottle into the infusion bottle / bag.

[0047] When configuring liquid medicine in a vial: Place the bottom of the peristaltic pump 5 in the installation groove 81, place the infusion bottle / bag in the infusion bottle / bag placement groove 1011, and make the mouth of the infusion bottle / bag in a closed position and extend out of the side wall of the infusion bottle / bag carrier plate 101. Fasten it tightly to the outside of the infusion bottle / bag carrier plate 101 and the infusion bottle / bag through the fixing strap 105 to fix the infusion bottle / bag in the infusion bottle / bag placement groove 1011. Loosen the locking nut 104 to make the infusion bottle / bag stand upright, and then tighten the locking nut 104 to position the infusion bottle / bag. Install the delivery tube in the pump head of the peristaltic pump 5, and puncture the medicine perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag. Open the aluminum-plastic combination caps of all the vials that need to be configured and neatly arrange them on the operating table. After disinfecting the bottle mouths, puncture the medicine suction needle 2 into the rubber stoppers of the vials one by one and then invert the vials, and simultaneously control the start of the peristaltic pump 5 through the foot control switch to suck the liquid medicine in the vials into the infusion bottle / bag.

[0048] When configuring the powder drug in the vial: Place the bottom of the peristaltic pump 5 in the installation groove 81, place the infusion bottle / bag in the infusion bottle / bag placement groove 1011, and make the mouth of the infusion bottle / bag in the closed position and extend out of the side wall of the infusion bottle / bag carrier 101. Fasten it outside the infusion bottle / bag carrier 101 and the infusion bottle / bag with the fixing strap 105 to fix the infusion bottle / bag in the infusion bottle / bag placement groove 1011. Install the delivery tube in the pump head of the peristaltic pump 5. The medical staff uses the valve cover 42 to seal the exhaust hole 411, and puncture the drug perfusion needle 3 into the rubber stopper of the disinfected infusion bottle / bag. After loosening the locking nut 104 to invert the infusion bottle / bag, then tighten the locking nut 104 again to position the infusion bottle / bag. After opening the aluminum-plastic combination caps of all the vials to be configured and arranging them neatly on the operation table, puncture the drug suction needles 2 into the rubber stoppers of the disinfected vials one by one, and simultaneously control the peristaltic pump 5 to start by stepping on the foot control switch, and quantitatively inject the liquid medicine in the infusion bottle / bag into the vials;

[0049] After all the injections are completed, shake the vials to fully dissolve the powder drug and arrange them neatly on the operation table. Then loosen the locking nut 104 to make the infusion bottle / bag stand upright, and then tighten the locking nut 104 again to position the infusion bottle / bag. Open the valve cover 42, puncture the drug suction needles 2 into the rubber stoppers of the disinfected vials one by one, invert the vials, and simultaneously control the peristaltic pump 5 to start by stepping on the foot control switch, and suck the liquid medicine in the vials into the infusion bottle / bag; All puncture operations are carried out after disinfection. The vials and the infusion bottles / bags are default to be disinfected before the puncture operation.

[0050] Obviously, the components of the above-mentioned intravenous drug configuration device and the corresponding method can be modified and / or added without departing from the scope and field of the present utility model.

[0051] Equally clearly, although the present utility model has described the intravenous drug configuration device in detail, those skilled in the art will surely be able to obtain many other equivalent forms of the intravenous drug configuration device and the corresponding method. The intravenous drug configuration device and the corresponding method have the features as described in the claims, and thus are all within the scope of the protection defined thereby.

Claims

1. An intravenous drug preparation device, characterized in that: It includes a delivery tube (1), a drug suction needle (2), a drug perfusion needle (3), an exhaust valve (4) and a peristaltic pump (5). The delivery tube (1) is installed inside the pump head of the peristaltic pump (5). The peristaltic pump (5) is used to drive the liquid medicine in the delivery tube (1) to flow towards one end of the delivery tube (1). The drug suction needle (2) and the drug perfusion needle (3) are respectively connected to both ends of the delivery tube (1). The drug perfusion needle (3) includes a needle seat (31) and a puncture needle (32) connected to each other. The exhaust valve (4) includes a valve seat (41), a valve cover (42) and a connecting band (43) connected between the valve seat (41) and the valve cover (42). The valve seat (41) is fixedly installed on the needle seat (31). An exhaust hole (411) is provided on the valve seat (41). The valve cover (42) is used to close the exhaust hole (411). A medicine preparation channel (6) and an exhaust channel (7) are provided inside the drug perfusion needle (3). One end of the medicine preparation channel (6) is communicated with the inner cavity of the delivery tube (1), and the other end extends out of the puncture needle (32). One end of the exhaust channel (7) is communicated with the exhaust hole (411), and the other end extends out of the puncture needle (32).

2. The intravenous drug preparation device according to claim 1, wherein: The exhaust valve (4) further includes a waterproof breathable membrane (44) and a pressing ring (45). A boss (412) is fixedly provided below the exhaust hole (411). The outer diameter of the pressing ring (45) is greater than or equal to the inner diameter of the exhaust hole (411). The waterproof breathable membrane (44) is arranged on the annular boss (412). After being sleeved into the exhaust hole (411) through the pressing ring (45), the waterproof breathable membrane (44) is clamped and fixedly installed between the boss (412) and the pressing ring (45).

3. The intravenous drug dispensing device according to claim 1, wherein: The drug suction needle (2) includes a suction needle seat and a suction needle connected to each other. The length of the suction needle is greater than or equal to the length of the puncture needle (32). The puncture needle (32) is a steel needle with a tip at the front end. The suction needle is a steel needle with a tip at the front end or a rigid plastic tube with a flat front surface.

4. The intravenous drug preparation device according to claim 1, characterized in that: The front end of the puncture needle (32) is a tip. The other end of the medicine preparation channel (6) extends out of the tip of the puncture needle (32). The other end of the exhaust channel (7) extends out of the puncture needle (32) from the side of the puncture needle (32).

5. The intravenous drug preparation device according to claim 1, characterized in that: The intravenous drug preparation device further includes a base (8), an ampoule rack (9) and an infusion bottle / bag limiting assembly (10). An installation groove (81) for placing the peristaltic pump (5) is provided in the middle of the top surface of the base (8). The ampoule rack (9) is fixedly installed on the left side of the top surface of the base (8). The ampoule rack (9) includes two vertical plates spaced apart by a certain distance and a horizontal plate fixedly installed at the top of the two vertical plates. A plurality of insertion holes (91) are evenly provided on the horizontal plate. The infusion bottle / bag limiting assembly (10) is installed on the right side of the top surface of the base (8). The infusion bottle / bag limiting assembly (10) is used to fixedly install the infusion bottle / bag and adjust the angle of the infusion bottle / bag.

6. The intravenous drug dispensing device according to claim 5, wherein: Two support plates (82) are fixedly arranged at a distance from each other on the right side of the top surface of the base (8), and an axial hole (821) is opened on the upper part of the support plate (82). The infusion bottle / bag limiting assembly (10) comprises an infusion bottle / bag carrier (101), a rotating shaft (102) and a threaded rod (103) fixedly arranged on both sides of the infusion bottle / bag carrier (101), and a locking nut (104) screwed onto the threaded rod (103). The rotating shaft (102) and the threaded rod (103) are 103) are respectively sleeved and installed on an axial hole (821), and an infusion bottle / bag placement groove (1011) is opened on the top surface of the infusion bottle / bag carrier (101), one end of the infusion bottle / bag placement groove (1011) extends out of the side wall of the infusion bottle / bag carrier (101), and one end of the infusion bottle / bag placement groove (1011) extending out of the side wall of the infusion bottle / bag carrier (101) is provided with a closing end to prevent the infusion bottle / bag from slipping off the infusion bottle / bag placement groove (1011).

7. The intravenous drug dispensing device according to claim 6, characterized in that: The infusion bottle / bag limiting assembly (10) also includes a fixing belt (105) for fixing the infusion bottle / bag in the infusion bottle / bag placement groove (1011), and the fixing belt (105) is an annular elastic belt, which is tightened on the outside of the infusion bottle / bag carrier (101).

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