Intraosseous infusion device

Abstract

The utility model relates to the technical field of infusion devices. An intraosseous infusion device comprises an infusion bag and a pressurizing air bag used for extruding the infusion bag, and further comprises a binding belt, the binding belt comprises an air bag fixing part and a body fixing binding belt, the body fixing binding belt is connected with the air bag fixing part, the pressurizing air bag is fixed to the inner side of the air bag fixing part, and an infusion bag containing cavity is formed in the pressurizing air bag; the infusion channel comprises a bent pipe, a flow guide pipe part and an infusion bag butt joint part which are connected in sequence; a flow sensor and a pressure sensor are sequentially installed on the flow guide pipe part from the side close to the bent pipe to the side away from the bent pipe. The infusion bag butt joint part is a puncture end part used for being communicated with an inner cavity of an infusion bag, and a spiral sleeve is rotationally connected to the bent pipe; the puncture needle comprises a needle core and an outer sheath tube, the needle core and the outer sheath tube are arranged inside and outside, and the end of the outer sheath tube is in threaded connection with the spiral sleeve. Flow and pressure detection can be conveniently achieved, and infusion pressure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion devices, in particular to an intraosseous infusion device. Background Art

[0002] Intraosseous infusion (i.e., bone infusion) is an emergency infusion and medication method that uses the bone marrow cavity to enter the blood circulation under special circumstances. Currently, bone infusion technology often uses traditional infusion methods: after successful puncture, connect the intravenous infusion tube, infusion bag, and hand-squeezed air bag pressurized bag for infusion.

[0003] Traditional infusion methods cannot control the infusion pressure well. Excessive pressure will cause tissue infiltration and severe pain for the patient during infusion; too little pressure will cause coagulation of tissue at the infusion needle port and low infusion efficiency.

[0004] Publication number CN115414549A discloses an arm-type airbag pressurized intelligent infusion device. The patent discloses that an infusion bag is fixed in a shell, the shell is fixed to the arm by a strap, and the infusion bag is pressurized by an airbag.

[0005] The above patent cannot achieve rapid docking with the puncture needle for infusion and cannot be directly used in an intraosseous infusion device. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides an intraosseous infusion device, which solves at least one of the above technical problems.

[0007] The technical solution of the utility model is: an intraosseous infusion device, comprising an infusion bag and a pressurized air bag for squeezing the infusion bag, characterized in that it also comprises a binding belt, the binding belt comprises an air bag fixing part and a body fixing binding belt, the body fixing binding belt is connected to the air bag fixing part, the pressurized air bag is fixed on the inner side of the air bag fixing part, and the inside of the pressurized air bag is provided with a placement cavity for the infusion bag;

[0008] It also includes an infusion channel, which includes a curved pipe, a guide pipe portion, and an infusion bag docking portion connected in sequence;

[0009] The flow guide pipe portion is provided with a flow sensor and a pressure sensor in sequence from the side adjacent to the elbow to the side away from the elbow;

[0010] The infusion bag docking portion is a puncture end portion used to connect to the inner cavity of the infusion bag, and a spiral sleeve is rotatably connected to the curved tube;

[0011] It also includes a puncture needle for piercing into the bone. The puncture needle includes a needle core and an outer sheath tube arranged inside and outside. The end of the outer sheath tube is threadedly connected with the spiral sleeve.

[0012] The utility model optimizes the structure of the infusion device to facilitate the docking with the infusion channel after puncture. The flow sensor and the pressure sensor facilitate the detection of flow and pressure to ensure the infusion pressure. Under a stable infusion pressure, the infusion flow is also stable. If there is a difference in the data sensed by the flow sensor, an alarm can be issued in time.

[0013] The utility model is aimed at treating the wounded in special operations in the wild at night, and in the case where the eyes cannot be opened due to strong wind and sand in the desert, and it is impossible to perform visual venous puncture or deep vein puncture. At this time, since the intraosseous infusion puncture point can be identified by touch, after the puncture point is identified by touch, the device is used to complete the puncture under blind vision, and after the puncture, the infusion channel is connected.

[0014] Since the infusion channel of the device is short, it does not require liquid gravity pressurization and can maintain stable pressure. It can also be fixed to the patient's body and hidden under human clothing, so it has a good warmth retention level. In extremely cold weather, it can perform infusion while transporting seriously injured patients.

[0015] Further preferably, the pressurized airbag comprises an external area away from the infusion bag and an internal area adjacent to the infusion bag, and the external area is connected to the internal area to form a closed inflation cavity;

[0016] The inner side or the outer side of the outer region is covered with a reinforcement layer.

[0017] Avoid inflation deformation of the external area. When the inflation cavity is inflated, only the internal area will deform and expand to pressurize the infusion bag.

[0018] Further preferably, the reinforcement layer is a plastic layer.

[0019] Further preferably, the internal area is fixedly connected with a first pressing plate and a second pressing plate respectively used to squeeze two sides of the infusion bag, and the infusion bag is clamped between the first pressing plate and the second pressing plate.

[0020] Further preferably, an inflation port and an exhaust port are installed on the inflation cavity, the inflation port is connected to an inflation pump, and the exhaust port is connected to an exhaust pump;

[0021] The inflation port and the exhaust port are both equipped with a one-way valve.

[0022] It is convenient to switch between inflation and exhaust and adjust the internal pressure of the pressurized airbag.

[0023] Further preferably, the airbag fixing portion is a storage bag, one end of the storage bag is open, and the open end is used as an insertion end for inserting the puncture end.

[0024] The pressurized air bag can be easily secured by the storage bag.

[0025] Further preferably, a sealing ring is fixed to the end of the curved tube away from the flow guide tube portion, and the sealing ring is clamped between the curved tube and the outer sheath tube.

[0026] Further preferably, the outer wall of the outer sheath tube is provided with a hand-holding portion.

[0027] Further preferably, the two ends of the torso fixing strap are detachably connected by means of bristle adhesive, so as to facilitate the fixing around the torso.

[0028] Beneficial effects:

[0029] The utility model optimizes the structure of the infusion device to facilitate the connection with the infusion channel after puncture.

[0030] Through the pressure sensor, according to the data sensed by the pressure sensor, the exhaust pump or the inflation pump is switched to start working, so that the expansion degree of the pressurized airbag is reduced or increased, and the liquid pressure is controlled at about 300mmHg, thereby achieving intelligent optimization of intraosseous infusion pressure control.

[0031] The flow sensor monitors the infusion flow. When the pressure is maintained but the flow continues to decrease, an alarm is triggered and medical workers can immediately take corresponding measures (flushing the tube to solve the blockage, changing the fluid to solve the problem of insufficient fluid) to ensure the normal progress of intraosseous infusion, thereby warning of puncture needle blockage or insufficient fluid.

[0032] By maintaining the infusion pressure basically stable, the infusion speed can be basically maintained stable, so that the infusion time can be well predicted. When a large number of casualties occur (war, natural disasters, stampedes, etc.), the time when the infusion bag of each casualty is about to be replaced can be well predicted, and batches of patients can be planned, thereby greatly reducing the burden of nursing staff on patient fluid management.

[0033] The utility model is aimed at treating the wounded in special operations in the wild at night, and in the case where the eyes cannot be opened due to strong wind and sand in the desert, and it is impossible to perform visual venous puncture or deep vein puncture. At this time, since the intraosseous infusion puncture point can be identified by touch, after the puncture point is identified by touch, the device is used to complete the puncture under blind vision, and after the puncture, the infusion channel is connected.

[0034] Since the infusion channel of the device is short, it does not require liquid gravity pressurization and can maintain stable pressure. It can also be fixed to the patient's body and hidden under human clothing, so it has a good warmth retention level. In extremely cold weather, it can perform infusion while transporting seriously injured patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural schematic diagram of a specific embodiment 1 of the utility model;

[0036] Figure 2 This is a structural schematic diagram of the specific embodiment 1 of the utility model in use;

[0037] Figure 3 It is a cross-sectional view of the connection between the outer sheath tube and the curved tube in the specific embodiment 1 of the utility model.

[0038] In the figure, 1 is a puncture needle, 2 is an infusion channel, 3 is a flow sensor, 4 is a liquid pressure sensor, 5 is an inflation pump, 6 is an infusion bag, 7 is an exhaust pump, 8 is a pressurized air bag, 9 is a control host, 10 is a body fixing strap, 11 is a needle core, and 12 is an outer sheath. DETAILED DESCRIPTION

[0039] See also Figures 1 to 3 , Specific embodiment 1, an intraosseous infusion device, including an infusion bag 6 and a pressurized airbag 8 for squeezing the infusion bag 6, and also including a binding belt, the binding belt includes an airbag fixing part and a body fixing strap 10, the body fixing strap 10 is connected to the airbag fixing part, the inner side of the airbag fixing part is fixed with a pressurized airbag 8, and the inside of the pressurized airbag 8 is provided with an infusion bag 6 placement cavity. The length of the body fixing strap 10 is 120cm and the width is 10cm. The two ends of the body fixing strap are detachably connected by bristle adhesive. It is convenient to be fixed around the trunk.

[0040] It also includes an infusion channel 2, which includes a curved pipe 21, a guide tube part and an infusion bag 6 docking part connected in sequence; a flow sensor 3 and a pressure sensor 4 are installed on the guide tube part in sequence from the side adjacent to the curved pipe to the side away from the curved pipe; the infusion bag 6 docking part is a puncture end part used to connect to the inner cavity of the infusion bag 6, and a spiral sleeve 22 is rotatably connected to the curved pipe; it also includes a puncture needle 1 for piercing into the bone, the puncture needle 1 includes a needle core 11 and an outer sheath 12 arranged inside and outside, and the end of the outer sheath 12 is threadedly connected to the spiral sleeve 22.

[0041] See also Figure 3 , a sealing ring 23 is fixed to the end of the curved tube away from the guide tube portion, and the sealing ring 23 is clamped between the curved tube and the outer sheath tube. Specifically, a sealing ring 23 is fixed to the end of the curved tube away from the guide tube portion. The end of the outer sheath tube is provided with a socket for inserting the end of the curved tube. The sealing ring abuts against the end of the outer sheath tube. The outer wall of the curved tube is fixed with a first fixing ring and a second fixing ring arranged along the axial direction. The end of the spiral sleeve is provided with a clamped portion between the first fixing ring and the second fixing ring. The gap between the first fixing ring and the second fixing ring is rotatably connected to the spiral sleeve. During the threaded connection process of the spiral sleeve and the outer sheath tube, the sealing ring is squeezed, thereby improving the sealing effect at the joint between the curved tube and the outer sheath tube. After puncture with the puncture needle, the needle core is removed, and the outer sheath tube is docked with the spiral sleeve.

[0042] The utility model optimizes the structure of the infusion device to facilitate the docking with the infusion channel 2 after puncture. The flow sensor 3 and the pressure sensor 4 facilitate the detection of flow and pressure to ensure the infusion pressure. Under a stable infusion pressure, the infusion flow is also stable. If there is a difference in the data sensed by the flow sensor 3, an alarm can be issued in time.

[0043] The utility model is aimed at treating the wounded in special operations in the wild at night, and in the case where the eyes cannot be opened due to strong desert sandstorms, and it is impossible to perform visual venous puncture or deep vein puncture. At this time, since the intraosseous infusion puncture point can be identified by touch, after the puncture point is identified by touch, the device is used to complete the puncture under blind vision, and after the puncture, the infusion channel 2 is connected.

[0044] Since the infusion channel 2 of the device is short, no gravity pressurization of the liquid is required and the pressure can be kept stable, and it can be fixed on the patient's body and hidden under human clothing, with a good degree of warmth retention, and in extremely cold weather, infusion can be carried out while the seriously injured are transported.

[0045] The inflatable cavity is provided with an inflating port and an exhaust port, the inflating port is connected to an inflating pump 5, and the exhaust port is connected to an exhaust pump 7; both the inflating port and the exhaust port are provided with a one-way valve, which is convenient for switching between inflating and exhausting, and adjusting the internal pressure of the pressurized airbag 8.

[0046] The airbag fixing part is a storage bag, one end of which is open, and the open end is used as an insertion end for inserting the puncture end. It is convenient to fix the pressurized airbag 8 through the storage bag. The pressurized airbag is provided with fixing parts at the four corners of the infusion bag that can be detachably connected. It is convenient to fix the infusion bag and the pressurized airbag relative to each other. The fixing part can be a strap, or a matching concave-convex buckle structure.

[0047] The outer wall of the outer sheath tube is provided with a hand-grip portion.

[0048] The flow sensor 3 is connected to the control host 9 via a first signal line, and the pressure sensor 4 is connected to the control host 9 via a second signal line. The control host 9 controls the connection of the inflation pump 5 and the exhaust pump 7. The first signal line and the second signal line are fixed closely to the guide pipe.

[0049] When the data detected by the pressure sensor 4 is lower than 295 mmHg, the control host 9 controls the inflation pump 5 to inflate and pressurize the pressurized airbag 8 to squeeze the infusion bag 6, and the pressure of the infusion bag 6 increases. When the pressure sensor 4 reaches 300 mmHg, the control host 9 controls the inflation pump 5 to stop working; when the pressure is higher than 305 mmHg, the control host 9 controls the exhaust pump 7 to work, the inflation degree of the airbag decreases, and the pressure of the infusion bag 6 decreases. When it reaches 300 mmHg, the control host 9 controls the exhaust pump 7 to stop working; by energizing and starting the inflation pump 5 and the exhaust pump 7, the pressure is kept stable at 295-305 mmHg.

[0050] The control host 9 is connected to a switch. When the switch is pressed, the control host 9 controls the exhaust pump 7 to work, and the pressure pump is released to replace the infusion bag 6 or end the infusion.

[0051] The control host 9 is connected to an alarm device. The alarm device is a warning light.

[0052] When the pressure sensed by the pressure sensor 4 is in the stable range (295-305mmHg), but the data sensed by the flow sensor 3 decreases by 10ml / min, the control host 9 controls the warning light to turn on. When the warning light is on, medical workers should immediately take relevant measures such as pressurized flushing, changing the liquid, etc. (According to literature records: the results of the study on the bone marrow infusion rate of different parts of adults at a pressure of 300mmHg are as follows: humerus is 41.3ml / min; the lower end of the femur is 29.5ml / min; the inner and outer ankles are 24.1ml / min; the tibia is 17.0ml / min; the sternum is 150ml / min, and individual differences and changes due to weight are small and are ignored here).

[0053] Specific embodiment 2, based on specific embodiment 1, the outer fabric of the pressurized airbag is less elastic and hard, and the inner fabric is more elastic and soft. After inflation, the infusion bag placed therein is pressurized.

[0054] The pressurized airbag includes an external area away from the infusion bag and an internal area adjacent to the infusion bag. The external area is connected to the internal area to form a closed inflation cavity. The inner or outer side of the external area is covered with a reinforcing layer. To avoid inflation deformation of the external area, when the inflation cavity is inflated, the internal area alone deforms and expands to pressurize the infusion bag. The reinforcing layer is a plastic layer. The internal area is fixedly connected with a first pressing plate and a second pressing plate for respectively squeezing the two sides of the infusion bag, and the infusion bag is clamped between the first pressing plate and the second pressing plate.

[0055] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An intraosseous infusion device, comprising an infusion bag and a pressurized air bag for squeezing the infusion bag, characterized in that: It also includes a binding belt, the binding belt includes an airbag fixing part and a body fixing binding belt, the body fixing binding belt is connected to the airbag fixing part, the pressurized airbag is fixed on the inner side of the airbag fixing part, and the inside of the pressurized airbag is provided with a placement cavity for the infusion bag; It also includes an infusion channel, which includes a curved pipe, a guide pipe portion, and an infusion bag docking portion connected in sequence; The flow guide pipe portion is provided with a flow sensor and a pressure sensor in sequence from the side adjacent to the elbow to the side away from the elbow; The infusion bag docking portion is a puncture end portion used to connect to the inner cavity of the infusion bag, and a spiral sleeve is rotatably connected to the curved tube; It also includes a puncture needle for piercing into the bone. The puncture needle includes a needle core and an outer sheath tube arranged inside and outside. The end of the outer sheath tube is threadedly connected with the spiral sleeve.

2. An intraosseous infusion device according to claim 1, characterized in that: The pressurized airbag comprises an external area away from the infusion bag and an internal area adjacent to the infusion bag, wherein the external area is connected to the internal area to form a closed inflation cavity; The inner side or the outer side of the outer region is covered with a reinforcement layer.

3. An intraosseous infusion device according to claim 2, characterized in that: The reinforcement layer is a plastic layer.

4. An intraosseous infusion device according to claim 2, characterized in that: The inner area is fixedly connected with a first pressing plate and a second pressing plate respectively used for squeezing two sides of the infusion bag, and the infusion bag is clamped between the first pressing plate and the second pressing plate.

5. The intraosseous infusion device according to claim 2, characterized in that: The inflation cavity is provided with an inflation port and an exhaust port, the inflation port is connected to an inflation pump, and the exhaust port is connected to an exhaust pump; The inflation port and the exhaust port are both equipped with a one-way valve.

6. An intraosseous infusion device according to claim 1, characterized in that: The airbag fixing part is a storage bag, one end of which is open, and the open end is used as an insertion end for inserting the puncture end.

7. An intraosseous infusion device according to claim 1, characterized in that: A sealing ring is fixed to the end of the curved tube away from the flow guide tube portion, and the sealing ring is sandwiched between the curved tube and the outer sheath tube.

8. The intraosseous infusion device according to claim 1, characterized in that: The outer wall of the outer sheath tube is provided with a hand-holding portion.

9. The intraosseous infusion device according to claim 1, characterized in that: The two ends of the body fixing strap are detachably connected by means of bristle adhesive.

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