Detachable multi-flow-velocity passive analgesia pump

Abstract

The invention discloses a detachable multi-flow-rate passive analgesia pump which comprises a plurality of sets of passive analgesia pump modules which are detachably installed and connected, and liquid medicine of each set of passive analgesia pump module flows out of an output port of an infusion pipeline and then is mixed with liquid medicine in other passive analgesia pump modules through a three-way valve. By pre-storing corresponding drugs, rapid use of opioid, non-steroidal and sedative related drugs can be realized, the configuration process of an analgesia pump is simplified, and the grading analgesia concept is advanced to a wound site.

Description

Technical Field

[0001] The invention relates to medical auxiliary equipment, in particular to a detachable multi-flow rate passive analgesia pump. Background Art

[0002] Pain is the most important complication of trauma. Acute pain after trauma not only severely limits the ability of the injured to move, but also seriously affects their physical and mental health, increasing the risk of chronic pain, post-traumatic stress disorder and depression. Timely analgesic treatment after trauma is crucial.

[0003] Common infusion pumps on the market are divided into active infusion pumps and passive infusion pumps. The former are mostly designed with an integrated structure, and their fixed channels reduce possible mechanical connection failures, reduce the uncertainty of external connections, and improve the stability of the equipment. However, the structure is relatively complex, which limits the scalability of the equipment. It is impossible to flexibly adjust the number or type of channels according to actual needs, which limits the scope of application of the equipment. Since it is not removable, the size and weight of the entire device may be large. In some cases, redundant channels may be idle, resulting in a waste of equipment resources. In addition, active infusion pumps usually rely on batteries to provide infusion power, which may not be suitable for special environments such as high temperature and high humidity.

[0004] Most passive infusion pumps are single-flow infusion pumps, which have the advantages of relatively simple structure, easy operation, and suitable for specific medical scenarios, such as those requiring a stable and fixed drug infusion rate. However, they lack flexibility and cannot adapt to diverse medical needs. During treatment, if a different flow rate is required, additional medication needs to be added through the drug delivery tee, which is inconvenient to use. Sometimes, it is even necessary to replace infusion pumps with different flow rates to meet the needs of patients, which is not conducive to achieving graded analgesia. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a detachable multi-flow-rate passive analgesia pump, which can realize the rapid use of opioids, non-steroidal and sedative-related drugs by pre-storing corresponding drugs, thereby streamlining the analgesia pump configuration process and moving the concept of graded analgesia to the trauma site.

[0006] The technical solution of the present invention is: a detachable multi-flow rate passive analgesia pump, comprising a plurality of groups of detachably installed and connected passive analgesia pump modules, the medicine in each group of passive analgesia pump modules flows out from the output port of the infusion pipeline and is mixed with the medicine in other passive analgesia pump modules through a three-way valve.

[0007] Furthermore, on the left and right sides of the passive analgesia pump module, one side is provided with a boss with a dovetail groove, and the other side is provided with a groove matching the boss. By matching and snapping the boss of one passive analgesia pump module with the groove of another passive analgesia pump module, the two portable analgesia pumps can be connected into one.

[0008] Furthermore, the groove includes a wedge-shaped guide groove at the front end and a dovetail groove at the rear end, so as to ensure that the device can be smoothly docked.

[0009] Furthermore, the fitting clearance at the end of the wedge-shaped guide groove 5 mm away from the dovetail groove gradually converges from 0.1 mm to 0.05 mm, so as to optimize the connection tightness of the device and ensure that appropriate damping is maintained during the disassembly and assembly process.

[0010] Furthermore, a limiting rib is provided at the end of the dovetail groove.

[0011] Further, the passive analgesia pump module includes a pump cabin, a pump cover, a bottom box, an upper cover, a filter, a speed regulator and an infusion pipeline;

[0012] The pump cabin is provided with a medicine storage bag, a two-way valve and an infusion valve; the medicine storage bag is fixed in a hollow cavity in the pump cabin; the infusion valve is a three-way structure, the first through hole of the infusion valve is a closable infusion port, the second through hole of the infusion valve is connected to the medicine storage bag, and the third through hole of the infusion valve is connected to the liquid inlet of the two-way valve; the two-way valve is provided with a two-way valve control switch capable of controlling the switch of the two-way valve; when liquid medicine is injected into the medicine storage bag through the infusion port of the infusion valve, the two-way valve control switch controls the two-way valve to be in a closed state; after the injection is completed, the two-way valve control switch controls the two-way valve to open, and the elastic retraction force of the medicine storage bag drives the liquid medicine to be transported to the two-way valve;

[0013] The pump cover is detachably fixedly connected to the pump chamber and placed in the bottom box, and the two-way valve control switch passes through the pump cover and is exposed;

[0014] The liquid outlet of the two-way valve is connected to the liquid inlet of the filter, and the liquid outlet of the filter is connected to the liquid inlet of the infusion pipeline;

[0015] The infusion pipeline is placed in the hollow storage cavity inside the bottom box, and the filter is placed in a dedicated placement area for the speed regulator reserved in the bottom box and is closed by a detachable upper cover. The upper cover is provided with an opening to expose the adjustment knob of the speed regulator.

[0016] Furthermore, the pump cover and the pump chamber are tightly connected by snap-fitting.

[0017] Furthermore, a buckle is provided in the pump cabin, and a matching hole is provided at a corresponding position of the bottom box, and after the pump cover is connected to the pump cabin, it is fixedly connected to the bottom box through the buckle and the matching hole, so as to ensure a firm connection between the components and prevent loosening or displacement during use.

[0018] Furthermore, the adjustment knob is a hexagonal structure embedded in the inner side of the end surface of the upper cover, and the speed adjustment needs to be controlled by rotating a corresponding hexagonal switch tool.

[0019] The beneficial effects of the present invention are as follows: compared with the prior art, the device of the present invention can realize the rapid use of opioids, non-steroidal and sedative-related drugs by pre-storing the corresponding drugs, which not only simplifies the configuration process of the analgesic pump, but also moves the concept of graded analgesia to the trauma site. The drug storage bag is a mechanical analgesic pump, which can overcome the fixed resistance of the preset pipeline by its own elastic retraction to achieve continuous and stable drug infusion. It is a passive infusion pump with the characteristics of lightness, safety, drop resistance, salt resistance and moisture resistance, which is sufficient to meet the storage and use conditions in special environments. Different infusion speeds can be achieved through the speed knob, and the speed accuracy is always high when using a single module or multiple modules. The device adopts a quick-release design, and realizes rapid installation and disassembly between multiple devices through a boss and groove structure with a dovetail groove. A wedge-shaped guide and an optimized matching clearance are designed to ensure that the device can be smoothly docked. Users can flexibly adjust the number of cabins according to their needs, providing a high degree of flexibility in use.

[0020] This new device can accurately meet the special needs of storage and use of graded analgesics in special environments, providing more timely and comprehensive analgesic treatment for trauma patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a passive analgesia pump module of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the pump room;

[0023] Figure 3 It is a schematic diagram of the overall structure of the pump room and pump cover;

[0024] Figure 4 Schematic diagram of dovetail groove structure;

[0025] Figure 5 This is the general assembly diagram of the detachable multi-flow-rate passive analgesia pump of the present invention.

[0026] In the figure: 1 is a pump cabin, 2 is a pump cover, 3 is a bottom box, 4 is an upper cover, 11 is a medicine storage bag, 12 is a two-way valve, 13 is an infusion valve, 21 is a two-way valve control switch, 22 is a buckle, 41 is a boss with a dovetail groove, 42 is a wedge-shaped guide groove, and 43 is a limiting rib. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1The figure shows a passive analgesia pump module, the main structure of which includes a pump cabin 1, a pump cover 2, a bottom box 3, an upper cover 4 and necessary infusion valves.

[0029] like Figure 2 As shown, a medicine storage bag 11, a two-way valve 12 and an infusion port 13 are provided in the pump cabin of the device. The medicine storage bag 11 is fixed in the elliptical cavity in the pump cabin 1. When the medicine liquid is injected into the medicine storage bag 11 through the infusion port 13, the two-way valve 12 is in a closed state. After the injection is completed, the two-way valve 12 is opened, and the elastic retraction force of the medicine storage bag 11 drives the medicine liquid to be transported to the speed regulator. The medicine storage bag used in this embodiment is made of silicone, with an inner diameter of 8mm, an outer diameter of 12mm, a thickness of 2mm, and a length of 120mm.

[0030] The pump cover 2 and the pump chamber 1 are tightly connected by snapping together, and a two-way valve control switch 21 capable of controlling the switch of the two-way valve 12 is provided through the pump cover, so that the patient can adjust or stop the infusion of the drug solution according to his own needs.

[0031] The liquid medicine passes through the outlet of the two-way valve and then through the filter into the speed regulator. The filter and the infusion pipeline can be placed in the rectangular storage cavity inside the bottom box. The pump cabin 1 and the pump cover 2 are buckled and placed in the bottom box 3 as a whole. Figure 3 As shown, a buckle 22 is provided in the pump cabin, and matching holes are provided at corresponding positions of the bottom box 3 to ensure a firm connection between the components and prevent loosening or displacement during use. A dedicated placement area for the speed regulator is reserved in the bottom box 3, and is closed by a removable upper cover 4. The upper cover 4 is partially provided with an opening to expose the adjustment knob of the speed regulator for easy operation. In order to prevent misoperation, a hexagonal switch tool of a specific shape is required to adjust the speed knob. The user can precisely control the infusion rate of the liquid medicine by rotating the knob. After the liquid medicine flows out of the speed regulator, it is mixed with the liquid medicine in other passive analgesia pump modules through a three-way valve.

[0032] like Figure 4 As shown, each passive analgesia pump module is designed with a boss 41 and a groove with a dovetail groove on the left and right sides respectively. The groove includes a wedge-shaped guide groove 42 at the front end and a dovetail groove at the rear end. The length of the dovetail groove is 50mm, and an 80mm wedge-shaped guide groove 42 is provided at the front end to ensure that the device can dock smoothly. The fitting clearance at the end of the notch of the wedge-shaped guide groove at 5mm from the dovetail groove gradually converges from 0.1mm to 0.05mm to optimize the connection tightness of the device and ensure proper damping during the disassembly and assembly process. In order to ensure precise alignment between the devices in the longitudinal direction, a 2mm thick limiting rib 43 is provided at the end of the dovetail groove. The above design ensures the stable connection of the device, and realizes the rapid assembly and disassembly of the modular structure through sliding fit. Users can flexibly adjust the number of cabins according to their needs.

[0033] To ensure medical safety and hygiene, this device is designed for single use. After each use, the entire device and its internal components can be easily disposed of, avoiding the risks of incomplete cleaning and cross infection that may be caused by traditional multiple-use devices.

[0034] Specifically, the schematic diagram of the detachable multi-flow rate passive analgesia pump structure after the three portable analgesia pumps are assembled is as follows: Figure 5 As shown, the assembled analgesic pump uses the mechanical elasticity of the drug storage bag as kinetic energy, and can infuse pre-stored drugs such as sufentanil, ketorolac or dexmedetomidine at three speeds of 0, 2, and 4 ml / h with high speed and accuracy. Through the dovetail groove structure, the sufentanil module, ketorolac module or dexmedetomidine module or three drug modules can be used in combination, and the speed accuracy error is within ±10%.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Detachable multi-flow passive analgesia pump, characterized by: It includes multiple groups of detachably installed and connected passive analgesia pump modules. The medicine in each group of passive analgesia pump modules flows out from the output port of the infusion pipeline and is mixed with the medicine in other passive analgesia pump modules through a three-way valve.

2. The detachable multi-flow-rate passive analgesia pump according to claim 1, characterized in that: On the left and right sides of the passive analgesia pump module, one side is provided with a boss (41) with a dovetail groove, and the other side is provided with a groove matching the boss (41). By matching and snapping the boss of one passive analgesia pump module with the groove of another passive analgesia pump module, the two portable analgesia pumps can be connected as one.

3. The detachable multi-flow-rate passive analgesia pump according to claim 2, characterized in that: The groove comprises a wedge-shaped guide groove (42) at the front end and a dovetail groove at the rear end.

4. The detachable multi-flow-rate passive analgesia pump according to claim 3, characterized in that: The fitting clearance at the end of the notch of the wedge-shaped guide groove (42) at a distance of 5 mm from the dovetail groove gradually converges from 0.1 mm to 0.05 mm.

5. The detachable multi-flow-rate passive analgesia pump according to claim 3, characterized in that: A limiting rib (43) is provided at the end of the dovetail groove.

6. The detachable multi-flow-rate passive analgesia pump according to claim 1, characterized in that: The passive analgesia pump module comprises a pump cabin (1), a pump cover (2), a bottom box (3), an upper cover (4), a filter, a speed regulator and an infusion pipeline; The pump cabin (1) is provided with a medicine storage bag (11), a two-way valve (12) and an infusion valve (13); the medicine storage bag (11) is fixed in a hollow cavity in the pump cabin (1); the infusion valve (13) is a three-way structure, the first through hole of the infusion valve (13) is a closable infusion port, the second through hole of the infusion valve (13) is connected to the medicine storage bag (11), and the third through hole of the infusion valve (13) is connected to the liquid inlet of the two-way valve (12); The two-way valve (12) is provided with a two-way valve control switch (21) capable of controlling the opening and closing of the two-way valve (12); when liquid medicine is injected into the medicine storage bag (11) through the infusion port of the infusion valve (13), the two-way valve control switch (21) controls the two-way valve (12) to be in a closed state; after the injection is completed, the two-way valve control switch (21) controls the two-way valve (12) to be opened, and the elastic retraction force of the medicine storage bag (11) drives the liquid medicine to be transported to the two-way valve (12); The pump cover (2) is detachably fixedly connected to the pump chamber (1) and then placed in the bottom box (3), and the two-way valve control switch (21) passes through the pump cover (2) and is exposed to the outside; The liquid outlet of the two-way valve (12) is connected to the liquid inlet of the filter, and the liquid outlet of the filter is connected to the liquid inlet of the infusion pipeline; The infusion pipeline is placed in a hollow storage cavity inside the bottom box (3), and the filter is placed in a dedicated placement area for the speed regulator reserved in the bottom box (3) and is closed by a detachable upper cover (4). The upper cover (4) is provided with an opening for exposing the adjustment knob of the speed regulator.

7. The detachable multi-flow-rate passive analgesia pump according to claim 6, characterized in that: The pump cover (2) and the pump chamber (1) are tightly connected by snapping.

8. The detachable multi-flow-rate passive analgesia pump according to claim 6, characterized in that: A buckle (22) is provided in the pump chamber (1), and a matching hole is provided at a corresponding position of the bottom box (3); after the pump cover (2) is connected to the pump chamber (1), it is fixedly connected to the bottom box (3) via the buckle (22) and the matching hole.

9. The detachable multi-flow-rate passive analgesia pump according to claim 1, characterized in that: The regulating knob is a hexagonal structure embedded in the inner side of the end surface of the upper cover (4), and needs to be rotated by a correspondingly formed hexagonal switch tool to control the speed.

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