CN112891674A - Infusion device - Google Patents
Infusion device Download PDFInfo
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- CN112891674A CN112891674A CN202110070685.7A CN202110070685A CN112891674A CN 112891674 A CN112891674 A CN 112891674A CN 202110070685 A CN202110070685 A CN 202110070685A CN 112891674 A CN112891674 A CN 112891674A
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- Prior art keywords
- infusion
- syringe
- assembly
- infusion device
- pipeline
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- 238000001802 infusion Methods 0.000 title claims abstract description 127
- 239000003814 drug Substances 0.000 claims abstract description 70
- 239000007924 injection Substances 0.000 claims abstract description 45
- 238000002347 injection Methods 0.000 claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 abstract description 36
- 238000000034 method Methods 0.000 abstract description 12
- 229940079593 drug Drugs 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000005213 imbibition Methods 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003978 infusion fluid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000036592 analgesia Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention belongs to the technical field of medical equipment, and particularly relates to an infusion device. The infusion device comprises an infusion pipeline, a push injection pump and a medicine supply pipeline, wherein a first one-way valve is arranged in the middle of the infusion pipeline, the push injection pump comprises an injector assembly and a push injection assembly connected with the injector assembly, the injector assembly is communicated with one end of the infusion pipeline, the push injection assembly can control the injector assembly to perform reciprocating operation of suction or push injection, the medicine supply pipeline is communicated with one end, close to the push injection pump, of the infusion pipeline, and a second one-way valve is arranged on the medicine supply pipeline. Through using the infusion device among this technical scheme, the cooperation between syringe subassembly and the injection subassembly can be accomplished and to the suction of supplying medicine container on the medicine supply pipeline and to the infusion of the required liquid medicine of patient, does not need special injection process, has promoted the convenience.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to an infusion device.
Background
Infusion liquid medicine is an important aspect in the medical field, and infusion liquid medicine mainly has two kinds of different technologies to realize at present, one kind is through motor push syringe (generally called push injection pump, syring pump), and push injection pump is generally comparatively accurate (2%), and is safer simultaneously, can not appear the overdose that gravity direct current caused, but because the syringe is limited, push injection pump generally can not carry out the bulk infusion. The other device (generally called peristaltic pump or infusion pump) for squeezing infusion in an infusion pipeline through a peristaltic mechanism has the advantages that as the infusion pump is used for squeezing a non-rigid infusion pipe through a rigid peristaltic mechanism in principle, the infusion precision can only reach 5% -10%, and when the liquid stop valve cannot work normally due to improper assembly or various reasons, the infusion pump is prone to problems such as gravity direct current and blood return. Therefore, an infusion device which can meet the infusion precision and the infusion of large dose is not available at present for the medical infusion requirement.
Disclosure of Invention
The invention aims to at least solve the problem that the infusion precision and the large-dose infusion cannot be simultaneously met when the liquid medicine is infused. The purpose is realized by the following technical scheme:
a first aspect of the invention proposes an infusion device comprising:
the middle part of the infusion pipeline is provided with a first one-way valve;
the injection pump comprises an injector assembly and an injection assembly connected with the injector assembly, the injector assembly is communicated with one end of the infusion pipeline, and the injection assembly can control the injector assembly to perform reciprocating operation of suction or injection;
the medicine supply pipeline is communicated with one end, close to the injection pump, of the infusion pipeline, and a second one-way valve is arranged on the medicine supply pipeline.
Through using the infusion device among this technical scheme, the infusion subassembly in the infusion device injection pump can make the syringe subassembly carry out the reciprocal operation of imbibition and liquid pushing, the cooperation supplies the medicine container on the medicine pipeline can make the infusion device possess the function of big dose infusion, the applicability is improved, the syringe subassembly itself in the infusion pump is injected to the infusion device simultaneously has certain infusion precision, satisfy and improved whole infusion device's precision, cooperation between syringe subassembly and the injection subassembly, can make the syringe subassembly accomplish the imbibition and the purpose of liquid pushing, and then accomplish the suction that supplies the medicine container on the medicine pipeline and the infusion to the required liquid medicine of patient, do not need special injection process, the convenience is promoted, in addition join in marriage two check valves on two pipelines, the security and the stability of infusion device have been guaranteed.
In addition, the infusion device according to the invention may also have the following additional technical features:
in some embodiments of the present invention, the bolus pump further comprises a housing and a holster to which the bolus assembly and the syringe assembly are secured, the holster being located inside the housing and coupled to the housing.
In some embodiments of the invention, the housing comprises a first half shell and a second half shell, the rotating portion of the first half shell being capable of rotational movement about the fixed portion of the second half shell, the first half shell corresponding to the position of the syringe assembly.
In some embodiments of the present invention, the bolus pump further comprises a safety lock disposed within the second housing half and cooperating with the locking portion of the first housing half, the safety lock for controlling the locking state of the first housing half.
In some embodiments of the present invention, the bolus injection assembly includes a power source, a motor, a lead screw and a transmission member, the power source is fixed on the frame and electrically connected to the motor, the motor is connected to one end of the lead screw and is configured to drive the lead screw to rotate, the other end of the lead screw is connected to the support portion of the frame, the lead screw is adapted to one end of the transmission member, the lead screw can drive the transmission member to axially move, and the other end of the transmission member is connected to the injector assembly.
In some embodiments of the present invention, the injector assembly includes a pressure plate and an injector, the injector is located between a body portion of the pressure plate and a resisting portion of the frame, a rod portion of the injector is connected to the other end of the transmission member, the body portion of the injector is communicated with the one end of the infusion pipeline through a first groove of the housing, a flange portion of the injector is clamped in a second groove of the frame, and a bottom of the pressure plate is connected to the resisting portion and can move horizontally in a direction perpendicular to a center line of the injector.
In some embodiments of the present invention, an ultrasonic sensor is disposed on an inner wall of the first groove, the ultrasonic sensor is sleeved outside the infusion pipeline, and the ultrasonic sensor is configured to detect bubbles in the infusion pipeline.
In some embodiments of the invention, the frame is provided with a travel sensor corresponding to the lead screw for detecting the position of the transmission member.
In some embodiments of the invention, the end face of the other end of the transmission member is provided with a pressure sensor which detects the pressure for pushing the syringe assembly.
In some embodiments of the present invention, the frame is provided with a motor direction detector corresponding to the other end of the lead screw, the motor direction detector being for detecting an operation direction of the motor.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically shows an overall structural view of an infusion device according to an embodiment of the present invention;
FIG. 2 schematically illustrates a schematic view of a removal supply line of an infusion device in accordance with an embodiment of the present invention;
FIG. 3 schematically illustrates a schematic configuration of a prime mode of an infusion device in accordance with an embodiment of the present invention;
FIG. 4 schematically illustrates a schematic configuration of a push mode of an infusion device in accordance with an embodiment of the present invention;
fig. 5 schematically shows a three-dimensional structural view of an infusion device according to an embodiment of the present invention;
FIG. 6 is a schematic three-dimensional view of the infusion set of FIG. 5 with the syringe removed;
fig. 7 schematically shows a cross-sectional construction of an infusion set in accordance with an embodiment of the invention;
fig. 8 schematically illustrates a bottom view of an infusion device in accordance with an embodiment of the present invention;
FIG. 9 is an enlarged schematic view of a portion of the infusion set of FIG. 7;
fig. 10 schematically shows a structural diagram of a control unit of an infusion device according to an embodiment of the invention.
10: transfusion pipeline, 11: first check valve, 12: a liquid medicine bubble filter;
20: push injection pump, 21: syringe assembly, 2111: body portion, 2112: bottom, 2121: tube body, 2122: stem, 2123: flange part, 221: power supply, 2211: power supply cover, 222: motor, 223: lead screw, 2241: one end of the transmission part, 2242: the other end of the transmission member, 22421: pressure sensor, 23: housing, 231: first half-shell, 2311: rotating part, 2312: locking portion, 232: second half-shell, 2321: fixed part, 2322: ultrasonic sensor, 2323: first groove, 241: support portion, 242: stroke sensor, 243: motor direction detector, 244: resist portion, 25: safety lock, 26: control unit, 261: main board, 262: a display screen;
30: supply line, 31: a second one-way valve;
40: a medicine supply container.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Fig. 1 schematically shows an overall configuration diagram of an infusion device according to an embodiment of the present invention. As shown in fig. 1, the present invention proposes an infusion device. The infusion device comprises an infusion pipeline 10, an injection pump 20 and a medicine supply pipeline 30, wherein a first one-way valve 11 is arranged in the middle of the infusion pipeline 10, the injection pump 20 comprises an injector component 21 and an injection component connected with the injector component 21, the injector component 21 is communicated with one end of the infusion pipeline 10, the injection component can control the injector component 21 to perform suction or injection reciprocating operation, the medicine supply pipeline 30 is communicated with one end, close to the injection pump 20, of the infusion pipeline 10, and a second one-way valve 31 is arranged on the medicine supply pipeline 30.
By using the infusion device in the technical scheme, the injection component in the injection pump 20 of the infusion device can enable the injector component 21 to perform the reciprocating operations of liquid suction and liquid pushing, and the infusion device can have the function of large-dose infusion by matching with the medicine supply container 40 on the medicine supply pipeline 30, thereby improving the applicability, meanwhile, the injector component 21 in the injection pump 20 of the infusion device has a certain infusion precision, so that the precision of the whole infusion device is met and improved, the injector component 21 and the injection component are matched, the injector component 21 can achieve the purposes of liquid suction and liquid pushing, thereby completing the suction of the medicine supply container 40 on the medicine supply pipeline 30 and the infusion of the medicine liquid required by the patient, needing no special medicine injection process, improving the convenience, in addition, two one-way valves on two pipelines are arranged, so that the safety and the stability of the infusion device are ensured.
In some embodiments of the present invention, as shown in FIGS. 5 and 7, the bolus pump 20 further includes a housing 23 and a holster to which both the bolus assembly and the syringe assembly 21 are secured, the holster being located inside the housing 23 and coupled to the housing 23. The frame is used for fixed injection subassembly and syringe subassembly 21, can provide certain support fixed space for the two, and the frame is connected on casing 23 again simultaneously for holistic structure is enough stable, has promoted the steadiness.
In some embodiments of the present invention, as shown in fig. 6 and 7, the housing 23 comprises a first half-shell 231 and a second half-shell 232, the rotating portion 2311 of the first half-shell 231 can rotate around the fixing portion 2321 of the second half-shell 232, and the first half-shell 231 corresponds to the position of the syringe assembly 21. According to the invention, the shell 23 is designed to be a split structure, and the first half shell 231 is arranged corresponding to the position of the syringe assembly 21, so that the syringe assembly 21 is convenient to disassemble and assemble, and meanwhile, the first half shell 231 can be fixed in a mobile infusion mode, thereby reducing the occurrence of safety problems such as falling off.
In some embodiments of the present invention, as shown in fig. 8, the push pump 20 further comprises a safety lock 25, the safety lock 25 is disposed in the second half-shell 232 and is matched with the locking portion 2312 of the first half-shell 231, and the safety lock 25 is used for controlling the locking state of the first half-shell 231. The safety lock 25 of the present invention is a general lock body structure, and is unlocked or locked by a key. The locking part that the lock body structure was equipped with can cooperate with the through-hole on the locking part 2312 of first half shell 231 under the locking state, and then realizes the state of first half shell 231 and the locking of second half shell 232. When the locking part is separated from the through-hole on the locking part 2312 of the first half shell 231, the first half shell 231 and the second half shell 232 are separated, i.e., the operation of mounting and dismounting the syringe assembly 21 can be realized. The safety lock 25 can ensure the locking state of the first shell 231 and the safety lock 25 when the infusion device is used for mobile infusion, so that the syringe assembly 21 cannot fall off or other safety problems, and the safety and the stability of the whole device are improved.
In some embodiments of the present invention, as shown in fig. 7, the bolus assembly includes a power source 221, a motor 222, a lead screw 223, and a transmission member, the power source 221 is fixed on the frame and electrically connected to the motor 222, and the power source 221 is used for providing a driving force for the bolus assembly. The motor 222 is connected to one end of the screw 223 and is used to drive the screw 223 to rotate, so that the screw 223 can conveniently drive the transmission member to move. The other end of the screw 223 is connected to a support part 241 of the frame, and in the present embodiment, a bearing is disposed at a position of the support part 241 corresponding to the other end of the screw 223, and is used for supporting the screw 223 and reducing friction. Lead screw 223 and the one end 2241 looks adaptation of driving medium, lead screw 223 can drive the driving medium and carry out axial displacement, and the other end 2242 of driving medium is connected with syringe subassembly 21, and then makes the driving medium drive syringe subassembly 21 carry out the operation of imbibition or liquid pushing.
Specifically, as shown in fig. 8, the power supply 221 in this embodiment is further provided with a power supply cover 2211 for fixing the power supply 221 and protecting the power supply 221.
Specifically, as shown in fig. 6, a clamp is disposed on the other end 2242 of the transmission member in this embodiment, and the clamp is used to clamp and fix the rod portion 2122 of the syringe, so as to enable the transmission member to drive the syringe to perform a liquid suction operation or a liquid pushing operation during the infusion process.
In some embodiments of the present invention, as shown in fig. 7 and 9, the syringe assembly 21 includes a pressure plate and a syringe, and the syringe is located between the body portion 2111 of the pressure plate and the abutment 244 of the frame, so that the body portion 2111 and the abutment 244 can compress and fix the syringe, thereby providing a guarantee for the stability of the subsequent infusion process. The rod part 2122 of the injector is connected with the other end 2242 of the transmission part, and the body part 2121 of the injector is communicated with one end of the infusion pipeline 10 through the first groove 2323 of the shell, so that the injection component can drive one end of the injector to move, the purpose of pushing or sucking liquid is further realized, and the operation of circular infusion is realized. The flange part 2123 of the injector is clamped in the second groove of the frame and used for positioning the injector, and further, the stability of the injector is realized, and certain positioning precision is ensured. The bottom 2112 of the pressing plate is connected with the resisting part 244 and can horizontally move along the direction vertical to the center line of the injector, so that the pressing plate can move along the direction vertical to the center line, the purpose that the pressing plate and the resisting part 244 fix injectors of different types is achieved, and the applicability is improved.
In some embodiments of the present invention, as shown in fig. 7, an ultrasonic sensor 2322 is disposed on an inner wall of the first recess 2323, the ultrasonic sensor 2322 is sleeved outside the infusion tube 10, and the ultrasonic sensor 2322 is used for detecting air bubbles in the infusion tube 10. The ultrasonic sensor 2322 in the present embodiment is connected to the control unit 26 of the bolus pump 20, and when bubbles appear in the infusion tube 10, it indicates that the remaining amount of the drug solution in the drug supply container 40 is insufficient, and the ultrasonic sensor 2322 can transmit the signal to the control unit 26 for analysis, thereby preventing the problems such as failure due to insufficient drug supply container 40, and improving the safety of the entire infusion device.
In some embodiments of the invention, as shown in fig. 8, the frame is provided with a stroke sensor 242 corresponding to the lead screw 223, the stroke sensor 242 being used to detect the position of the transmission member. When the one end 2241 of driving medium arrived at the left limit or the right limit position of lead screw 223 in the infusion process, stroke sensor 242 can the record position and confirm that syringe subassembly 21 is in the state that the liquid medicine was inhaled and is full or the liquid medicine is pushed and finishes, and then records a liquid medicine numerical value for subsequent statistics of liquid medicine quantity infusion has promoted the accuracy.
In some embodiments of the invention, as shown in FIG. 7, the end face of the other end 2242 of the drive member is provided with a pressure sensor 22421, and pressure sensor 22421 detects the pressure used to push syringe assembly 21. When the liquid medicine in the medicine supply container 40 is completely sucked in the injection process, the liquid medicine in the injector is not full, the pressure sensed by the pressure sensor 22421 is different from that when the liquid medicine is fully filled in the injector, and the control unit 26 can judge whether the liquid medicine in the medicine supply container 40 is completely sucked or not, so that the alarm of the completion of the infusion is given.
In some embodiments of the present invention, as shown in fig. 8, the frame is provided with a motor direction detector 243 corresponding to the other end of the lead screw 223, and the motor direction detector 243 is used to detect the operation direction of the motor 222. The motor direction detector 243 can detect the operation direction of the motor 222 in real time, so as to know the operation state of the syringe assembly 21, and can transmit the information to the control unit 26, and the parameters of the stroke sensor 242, the ultrasonic sensor 2322 and the pressure sensor 22421 are combined to analyze the operation state of the syringe assembly 21 and the liquid medicine state of the medicine supply container 40, so that corresponding measures are taken, and the stability and the safety of the whole device are improved.
In some embodiments of the present invention, as shown in fig. 10, the infusion apparatus further comprises a control unit 26, wherein the control unit 26 comprises a main board 261 and a display 262, and the main board 261 is respectively connected with the motor direction detector 243, the stroke sensor 242, the ultrasonic sensor 2322 and the pressure sensor 22421, and is used for identifying the operation state of the syringe assembly 21 and the liquid medicine state of the medicine supply container 40. The display 262 of the control unit 26 is used to display the relevant operating parameters of the syringe assembly 21, providing a certain convenience for the operator, making the assembly parameters in the bolus pump 20 more intuitive.
In some embodiments of the present invention, as shown in fig. 1, a medical fluid bubble filter 12 is further disposed between the one-way valve and the patient, and the medical fluid bubble filter 12 is used for removing air bubbles flowing into the medical fluid of the patient from the infusion line 10, so as to improve the safety of infusion.
Further, as shown in fig. 2, when the infusion apparatus performs a small-dose infusion mode, the drug supply pipeline 30 is firstly pulled out, an outlet of the drug supply pipeline 30 is blocked by using a luer end cap, meanwhile, the syringe of the syringe assembly 21 is filled with the drug solution, then the syringe is loaded into the injection pump 20 and connected with the infusion pipeline 10, and the drug solution is exhausted through the drug solution bubble filter 12 and then connected with a patient for infusion.
Further, as shown in fig. 3 and 4, the arrows in the drawings indicate the direction of the flow of the liquid medicine. When the infusion device is in a circulating infusion mode, the injection pump 20 is started to be in a suction mode, the second one-way valve 31 on the medicine supply pipeline 30 is unobstructed, the first one-way valve 11 on the infusion pipeline 10 is closed, the state between the medicine supply container 40 and the injector is a passage, and the state between the injector and a patient is a closed circuit, so that the injector can suck liquid medicine from the medicine supply container 40 without sucking blood from the patient, and the safety is improved. Wherein, when the stroke sensor 242 in the bolus pump 20 detects that one end 2241 of the transmission member reaches the left limit value (i.e., marks that the syringe is full of liquid medicine), the drawing is stopped immediately. Then the bolus pump 20 is switched to a bolus mode, at this time, the second one-way valve 31 is closed, the first one-way valve 11 is unblocked, the state between the injector and the medicine supply container 40 is closed, the state between the injector and the patient is a passage, and during the period, the infusion is performed on the patient according to a certain designed flow rate. In addition, the liquid medicine can be exhausted through the liquid medicine bubble filter 12 in the infusion process, and the gas can not enter the human body. When the stroke sensor 242 of the syringe pump 20 detects that the syringe plunger reaches the right limit value (i.e., it indicates that the syringe has been completely filled with medical fluid), the syringe pump 20 switches to the suction mode, and then sucks medical fluid from the medical fluid supply container 40 again, and then switches to the bolus mode again after the syringe is completely filled, and the stroke sensor 242 and the motor direction detector 243 cooperate with the control unit 26 to continuously count the total infusion amount, perform infusion according to the set flow rate, and perform reciprocating circulation.
Specifically, the aspiration mode of the present invention can be performed quickly, while the infusion mode requires specific settings and analysis depending on the specific patient. The mode of the circular infusion of the invention can replace an infusion pump, an analgesia pump, a drug injection pump and an enteral nutrition pump, thereby improving the applicability.
Specifically, in the process of pushing, the push head is provided with the pressure sensor 22421, when the liquid medicine in the medicine supply container 40 is completely sucked, the liquid medicine in the syringe is not full, and the pressure sensed by the pressure sensor 22421 is different from that when the liquid medicine in the syringe is completely sucked, so that the push injection pump 20 can judge whether the liquid medicine in the medicine supply container 40 is completely sucked, and then the operations such as the completion of the infusion can be performed.
Further, as shown in fig. 2, when the infusion apparatus performs the circular infusion, if the patient needs to move (for example, go to a toilet), the infusion apparatus can perform a mobile infusion mode, the medicine supply pipeline 30 is firstly pulled out, then the luer end cap is used to block the interface of the medicine supply pipeline 30, the patient can carry part of the infusion apparatus (i.e. the bolus pump 20 and the infusion pipeline 10) to move so as to realize the mobile bolus mode, and because there is a certain liquid medicine in the syringe, the patient can be ensured to continue the infusion without interruption when leaving. Meanwhile, the safety lock 25 of the injection pump 20 can ensure that the first shell 231 corresponding to the syringe is locked, and infusion safety problems caused by falling off or manual disassembly and assembly in the moving infusion process are avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An infusion device, comprising:
the middle part of the infusion pipeline is provided with a first one-way valve;
the injection pump comprises an injector assembly and an injection assembly connected with the injector assembly, the injector assembly is communicated with one end of the infusion pipeline, and the injection assembly can control the injector assembly to perform reciprocating operation of suction or injection;
the medicine supply pipeline is communicated with one end, close to the injection pump, of the infusion pipeline, and a second one-way valve is arranged on the medicine supply pipeline.
2. The infusion device of claim 1, wherein the bolus pump further comprises a housing and a holster to which the bolus assembly and the syringe assembly are secured, the holster being positioned within and coupled to the housing.
3. The infusion device of claim 2, wherein the housing comprises a first half shell and a second half shell, the rotating portion of the first half shell being capable of rotational movement about the fixed portion of the second half shell, the first half shell corresponding to the position of the syringe assembly.
4. The infusion device of claim 3, wherein the bolus pump further comprises a safety lock disposed within the second housing half and cooperating with the locking portion of the first housing half, the safety lock for controlling the locking state of the first housing half.
5. The infusion device according to claim 2, wherein the bolus assembly comprises a power source, a motor, a lead screw, and a transmission member, wherein the power source is fixed on the frame and electrically connected to the motor, the motor is connected to one end of the lead screw and drives the lead screw to rotate, the other end of the lead screw is connected to the support portion of the frame, the lead screw is adapted to one end of the transmission member, the lead screw can drive the transmission member to axially move, and the other end of the transmission member is connected to the syringe assembly.
6. The infusion device of claim 5, wherein the syringe assembly comprises a pressure plate and a syringe, the syringe is positioned between a body portion of the pressure plate and a stop portion of the frame, a rod portion of the syringe is connected to the other end of the transmission member, the body portion of the syringe is in communication with the one end of the infusion line through a first groove of the housing, a flange portion of the syringe is clamped in a second groove of the frame, and a bottom of the pressure plate is connected to the stop portion and is capable of moving horizontally in a direction perpendicular to a center line of the syringe.
7. The infusion device according to claim 6, wherein an ultrasonic sensor is disposed on an inner wall of the first groove, the ultrasonic sensor is sleeved outside the infusion line, and the ultrasonic sensor is used for detecting air bubbles in the infusion line.
8. The infusion device according to claim 5, wherein the frame is provided with a travel sensor corresponding to the lead screw for detecting the position of the transmission member.
9. The infusion device as claimed in claim 5, wherein the end face of the other end of the transmission member is provided with a pressure sensor which detects the pressure for pushing the syringe assembly.
10. The infusion device as claimed in claim 5, wherein the frame is provided with a motor direction detector corresponding to the other end of the lead screw for detecting the operation direction of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070685.7A CN112891674A (en) | 2021-01-19 | 2021-01-19 | Infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070685.7A CN112891674A (en) | 2021-01-19 | 2021-01-19 | Infusion device |
Publications (1)
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Cited By (1)
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| CN114870154A (en) * | 2022-04-13 | 2022-08-09 | 江苏爱朋医疗科技股份有限公司 | Infusion device |
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Application publication date: 20210604 |