CN107456625B - Fluid infusion apparatus and its drive system - Google Patents
Fluid infusion apparatus and its drive system Download PDFInfo
- Publication number
- CN107456625B CN107456625B CN201710817809.7A CN201710817809A CN107456625B CN 107456625 B CN107456625 B CN 107456625B CN 201710817809 A CN201710817809 A CN 201710817809A CN 107456625 B CN107456625 B CN 107456625B
- Authority
- CN
- China
- Prior art keywords
- drive system
- driving member
- driving
- leading screw
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
-
- 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
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M2005/16863—Occlusion detection
-
- 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
- A61M2205/18—General characteristics of the apparatus with alarm
-
- 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
- A61M2205/3327—Measuring
Abstract
The invention discloses a kind of fluid infusion apparatus and its drive systems.Wherein, the drive system includes：Driving member；Driving mechanism, the driving mechanism is for driving the driving member to rotate；Driven member, the driven member is configured to coordinate with the driving member so that the two can generate relative displacement while relatively rotating, wherein one of the driving member and driven member are configured as：Can respond the other of the driving member and driven member along the piston for pushing the fluid infusion apparatus first direction move be obstructed, generate movement in a second direction, the second direction and the first direction are reversed；And testing agency, for detecting whether one of the driving member and the driven member meet setting condition along moving for the second direction.Related embodiment using the present invention is conducive to the state for accurately and timely determining fluid infusion apparatus.
Description
Technical field
The present invention relates to fluid delivery fields, more particularly, it is related to a kind of fluid infusion apparatus and its drive system.
Background technology
Diabetes are a kind of metabolic diseases characterized by hyperglycemia.Hyperglycemia is typically due to defect of insulin secretion
Or its biological effect is impaired, or both comprehensive function cause.Long-standing hyperglycemia can cause multiple in diabetic's body
The chronic lesion of organ (for example, eye, kidney, heart, blood vessel, nervous system etc.), dysfunction.
Diabetes clinical diagnosis can be divided into type 1 diabetes and diabetes B.Type 1 diabetes, also referred to as insulin-dependent
Diabetes, patient condition typically occur in child or adolescent's period, are a kind of diseases by congenital familial inheritance.1 type glycosuria
Disease belongs to a kind of autoimmune disease, and the immune system of body is made attack to the β cells for producing insulin in vivo, finally led
Cause can not produce insulin in vivo.This kind of patient needs the insulin of injection of exogenous to carry out the blood glucose level in control volume.1 type sugar
Urine patient generally requires 24 hours carrying electronic formula insulin pump in treatment, for example, Medtronic Minimed series insulin pumps.2
Patients with type Ⅰ DM, also referred to as Non-Insulin Dependent Diabetes Mellitus, general patient are adult, especially obese people, and illness can be led
Cause is become thin.The possible cause of disease includes：Insulin resistance prevents body from insulin is efficiently used；The reduction of insulin secretion,
It cannot be satisfied needed for body.The diabetes B patient of early stage can be by the mode of making the life better (for example, healthy diet, appropriate fortune
Dynamic, safe fat-reducing gives up smoking and avoids secondhand smoke etc.) it controls, or even cure diabetes.Most of diabetes B patient Ke Tong
Oral hypoglycemic agents help is crossed to control body blood glucose level or control blood glucose level by interim insulin injection.
Traditional drug infusion pumps use the structure of motor setting coaxial with leading screw.This structure, in order to detect fluid
Infusion working condition (such as, if block), need to be removable including the Driving Scheme including motor, leading screw,
Which increase drive system and the complex degree of structure of fluid infusion apparatus, and the stability, the accuracy of detection that run are equal
It is to be improved.
Invention content
In order to solve the defect present in existing fluid infusion apparatus, embodiment of the present invention provides a kind of fluid infusion dress
It sets and its drive system, is conducive to the state for accurately and timely determining fluid infusion apparatus.
On the one hand, a kind of drive system of fluid infusion apparatus is provided according to an embodiment of the invention, including：
Driving member；
Driving mechanism, the driving mechanism is for driving the driving member to rotate；
Driven member, the driven member are configured to coordinate so that the two can be in relative rotation with the driving member
Generate relative displacement simultaneously, wherein one of the driving member and driven member are configured as：The active can be responded
The other of component and driven member along the piston for pushing the fluid infusion apparatus first direction move be obstructed, produce
Raw movement in a second direction, the second direction and the first direction are reversed；With
Testing agency moves feelings for detecting one of the driving member and driven member along the second direction
Condition.
Correspondingly, a kind of fluid infusion apparatus is provided according to embodiments of the present invention, which includes：
Liquid reservoir, for accommodating fluid；
Fluid delivery mechanism is connected to the liquid reservoir, is used for Object delivery fluid；
Piston is configured in the liquid reservoir move axially along the liquid reservoir；And
Foregoing drive system, for making the piston be moved axially in the liquid reservoir, so that the reservoir
Fluid in device is delivered to object via the fluid delivery mechanism.
Using various embodiments of the present invention, by making one of driving member and driven member respond driving member and driven
The other of component along first direction move be obstructed, and generate movement in a second direction, and examine by testing agency
The reverse movement is surveyed, can accurately and timely find the situation of such as fluid infusion apparatus blocking, fluid evacuation etc.
Description of the drawings
Fig. 1 shows a kind of structural schematic diagram of according to embodiments of the present invention 2 drive system；
Fig. 2 shows the structural schematic diagrams and its partial enlarged view of a kind of according to embodiments of the present invention 3 drive system；
Fig. 3 shows the A-A sectional views of drive system shown in Fig. 2；
Fig. 4 shows a kind of structural schematic diagram of according to embodiments of the present invention 4 drive system；
Fig. 5 shows a kind of structural schematic diagram of according to embodiments of the present invention 5 drive system；
Fig. 6 shows a kind of overall structure diagram of according to embodiments of the present invention 7 fluid infusion apparatus；
Fig. 7 shows a kind of structural schematic diagram of guiding mechanism.
Specific implementation mode
It is described in detail to various aspects of the present invention below in conjunction with the drawings and specific embodiments.Wherein, many institute's weeks
Structure, component and its mutual connection, link or the operation known are not shown or do not elaborate.Also, it is described
Component, structure or function can in any way combine in one or more embodiments.Those skilled in the art answer
Work as understanding, following various embodiments are served only for the protection domain for example, and is not intended to limit the present invention.It can also hold
Readily understood, component, structure, unit or step in each embodiment described herein and shown in the drawings can be matched by various differences
It sets and is combined and designs.It can also be readily appreciated that, although may be only in some embodiments to specific names, term, range
Etc. explaining, but the explanation is equally applicable to other embodiments, unless stated otherwise.
【Embodiment 1】
The present embodiment provides a kind of drive system, which can be applied to fluid infusion apparatus, for example, applied to
In the attaching pump (patch pump) of patient's liquid medicine injection.Generally speaking, the drive system includes driving member, driving machine
Structure, driven member and testing agency.It is specifically described below.
In the present embodiment, driven member is configured as coordinating so that both of which can relatively rotate with driving member
While generate relative displacement.For example, driving member and driven member are configured to the cooperation side of such as ball-screw, thread lead screw
Formula.Also, one of driving member and driven member are configured as：It can respond in the driving member and driven member
Another one along push fluid infusion apparatus piston first direction move be obstructed, generate movement in a second direction, institute
It states second direction and the first direction is reversed.For example, driving member is configured as pushing piston, driven member along first direction
Then be configured in response to driving member along first direction move be obstructed and move in a second direction.Alternatively, from
Dynamic component is configured as pushing piston, driving member to be then configured to response driven member along first direction along first direction
Being obstructed for movement and move in a second direction.
In the present embodiment, driving mechanism is for driving driving member to rotate.For example, driving mechanism includes power source and biography
Dynamic equipment.Power source transfers a driving force to driving member by drive apparatus, and driving member is made to rotate.
In the present embodiment, testing agency is used to detect the one in driving member and driven member (that is, active structure
Moved in a second direction in part and driven member that) along the situation of movement of the second direction, for example, the movement is
No satisfaction imposes a condition.Optionally, the setting condition can be related to amount of movement, can also with reflect the amount of movement indirectly
Parameter it is related.
Using driving mechanism provided in this embodiment, by the way that one of driving member and driven member are configured to
It is moved backward when the movement of another one is obstructed, and the reverse movement is detected by testing agency, can accurately and timely found
Such as situation of fluid infusion apparatus blocking, fluid evacuation etc.
Optionally, in a kind of realization method of the present embodiment, the testing agency includes pressure sensor.The pressure
Sensor is arranged in the position opposite with one end of separate piston of the one in driving member and driven member, for examining
The one surveyed in the driving member and driven member moves generated pressure along the second direction.In addition, inspection
It can also includes processing circuit (for example, processor) to survey mechanism, for judging that pressure is according to the testing result of pressure sensor
It is no to reach threshold value.
In another realization method equivalent or similar with the realization method, pressure sensor can integrate the processing
The function of circuit.For example, the pressure sensor is pressure switch, the one in driving member and driven member is along institute
When stating pressure caused by the movement of second direction and reaching threshold value, trigger switch action.
Optionally, in a kind of realization method of the present embodiment, the testing agency includes displacement sensor, for detecting
The one in driving member and driven member sets position along the displacement of the second direction for example, detecting whether to be moved to
It sets.For example, displacement sensor is photoelectric sensor.With in the present embodiment or embodiments described just below to drive system
The structure and working principle of the drive system of description, the present embodiment or embodiments described below will become clearer, in this base
On plinth, those skilled in the art can be set according to actual needs displacement sensor, and therefore, the present invention is not intended to limit displacement sensing
The specific set-up mode of device.
Optionally, in a kind of realization method of the present embodiment, the drive system is in addition to including driving member, driving machine
Except structure, driven member and testing agency, also there is control mechanism.The control mechanism is used for the output result according to testing agency
Determine the working condition of fluid infusion apparatus, and/or, for the output output control driving mechanism according to testing agency.For example,
If the output result of testing agency is unsatisfactory for imposing a condition, control mechanism determines that fluid infusion apparatus is working properly；Conversely,
Control mechanism determines fluid infusion apparatus operation irregularity (for example, blocking).For another example when determining fluid infusion apparatus operation irregularity
When, control driving mechanism stops applying driving force, and control peripheral equipment (for example, indicator light, buzzer, display etc.) is alarmed.
In addition, control mechanism can also integrate the function of aforementioned processing circuit.
Optionally, in a kind of realization method of the present embodiment, the drive system also has encoder, for conduct
The motor of power source carries out coding-control.
【Embodiment 2】
Fig. 1 shows a kind of structural schematic diagram of according to embodiments of the present invention 2 drive system.The drive system applications
In fluid infusion apparatus, for example, in applied to being pumped to the attaching of patient's liquid medicine injection.Generally speaking, the stream that embodiment 2 is provided
Body infusion device includes driving member, driven member, driving mechanism and testing agency.
In example 2, referring to Fig.1, driving member is leading screw 1, and driven member is then the spiral shell with the screw-thread fit of leading screw 1
Mother 2, for pushing piston along first direction a.It is described in detail below in conjunction with the accompanying drawings.
In the present embodiment, referring to Fig.1, coordinate as the leading screw of driving member 1 and the nut 2 as driven member, make
Relative displacement can be generated while relatively rotating by obtaining the two.It should be noted that nut 2 in the present embodiment be only from
A kind of signal of dynamic component, it is intended that illustrate the structure and operation principle of drive system.It will be appreciated by those skilled in the art that
It, can be to driven member in the case of ensureing that driven member can generate relative displacement with driving member while relatively rotating
Shape, the connection relation (for example, connected directly or indirectly) of driven member and piston carry out flexible design, this all falls within
In the protection domain of the claims in the present invention.In addition, the illustrated leading screw 1 of various embodiments of the present invention is also a kind of signal, this hair
Bright each embodiment does not do concrete restriction to the screw thread distribution on leading screw 1.
In the present embodiment, leading screw 1 is configured as：The moving along the first direction a for pushing piston of nut 2 can be responded
It is obstructed, generates the movement of b in a second direction, the second direction b and the first direction a are reversed.Wherein, about making nut 2
The guide frame for pushing piston, is described below.
In the present embodiment, for driving mechanism 3 for driving leading screw 1 to rotate, testing agency 4 is then used to detect leading screw 1 along the
The situation of movement of two direction b, for example, whether the movement of detection leading screw 1 meets setting condition.
In drive system provided in this embodiment, driving mechanism 3 drives leading screw 1 to rotate, and nut 2 is for example mentioned below
Guiding mechanism guiding and moved along first direction a to push piston.When nut 2 is obstructed along the movement of first direction a, by
It is configured as moving b in a second direction in leading screw 1, so in the case where keeping driving mechanism 3 that leading screw 1 is driven to rotate, silk
The rotation of thick stick 1 leads to leading screw 1, and relative to nut 2, b is moved in a second direction, then, leading screw 1 is detected along second by testing agency 4
The situation of movement of direction b, for example, whether the movement of detection leading screw 1 meets setting condition.
So the drive system provided using the present embodiment 2, dynamic by making leading screw 1 generate in response to being obstructed for nut 2
Make, and detect the action of leading screw 1 by testing agency, accurately and timely can find or determine fluid infusion apparatus
Situation (such as, if block).
【Embodiment 3】
Fig. 2 shows the structural schematic diagram of according to embodiments of the present invention 3 drive system and its partial enlarged view, Fig. 3 shows
The A-A sectional views (power source is omitted) of drive system shown in Fig. 2 are gone out.The drive system applications that the present embodiment 3 provides are in stream
Body infusion device, for example, in applied to being pumped to the attaching of patient's liquid medicine injection.
Generally speaking, the fluid infusion apparatus that embodiment 3 is provided include driving member, driven member, driving mechanism and
Testing agency.
In the present embodiment, same as Example 2 or similarly, leading screw 1 is driving member, and nut 2 is driven member.Its
In, for pushing the piston of fluid infusion apparatus to be moved along first direction a, leading screw 1 is then configured as nut 2：Spiral shell can be responded
Mother 2 along first direction a move be obstructed, generate the movement of b in a second direction.Testing agency 4 is then used to detect 1 edge of leading screw
The situation of movement of second direction b.Associated description please refers to the explanation in embodiment 2, does not repeat herein.
In the present embodiment, as shown in Fig. 2, driving mechanism 3 includes power source 31 (for example, motor) and transmission gear 32.
Wherein, the final stage driven gear 321 of transmission gear 32 is located at one end of the separate piston of leading screw 1, for turning together with leading screw 1
It is dynamic.
Optionally, in a kind of realization method of the present embodiment, as shown in the partial enlarged view in Fig. 2, final stage driven tooth
Wheel 321 is fixedly connected with leading screw 1, also, final stage driving gear 322 and final stage driven gear 321 are straight spur gear.This
Sample, both final stage driving gear 322 and final stage driven gear 321 opposite can slide, and enabling leading screw 1, b is moved in a second direction
It is dynamic, even in the transmittance process of driving force.In a kind of example of this realization method, the tooth of final stage driving gear 322
Length is more than the length of the tooth of final stage driven gear 321.In a kind of example of this realization method, in order to allow leading screw 1 along
Two direction b are moved, and in the gear-box 5 for accommodating transmission gear 32, having allows the b shiftings in a second direction of final stage driven gear 321
Dynamic space.For example, gap is arranged between gear-box 5 and final stage driven gear 321, is set in the one end of leading screw 1 far from piston
Set the space etc. extended for leading screw 1.
Optionally, in a kind of realization method of the present embodiment, final stage driven gear 321 and the leading screw 1 of transmission gear 32
It opposite can be slidably connected, for example, the junction of leading screw 1 and final stage driven gear 321 is set as uniform flat.Change speech
It, final stage driven gear 321 and leading screw 1 can common rotation, and can opposite sliding, to make leading screw 1 can driven power and
Rotation, and with the ability of the movements of b in a second direction.Unlike aforementioned realization method, it is not intended to limit in this realization method
The gear shape of final stage driven gear 321.
In the present embodiment, illustratively provide make leading screw 1 in response to nut 2 along first direction a move be obstructed and
The Several structural configuration mode of reverse movement.Using the drive system with this structure configuration mode, 2 edge of nut can be responded
First direction a's is obstructed and generates the action detected for testing agency 4, convenient for accurately and timely detecting fluid infusion apparatus
State.
Optionally, in a kind of realization method of the present embodiment, as shown in Figures 2 and 3, testing agency 4 is pressure sensing
Device is arranged in the position opposite with one end of separate piston of leading screw 1, for example, being kept in contact with leading screw 1.The pressure passes
Sensor 4 is for bearing the pressure caused by the movement of b in a second direction of leading screw 1, and when the pressure reaches threshold value, output indicates
Pressure reaches the signal of threshold value.In other realization methods of the present embodiment, displacement sensor can also be used to be passed instead of pressure
Sensor.
Optionally, in the realization method, pedestal that testing agency 4 can be fixed on such as gear-box, specially be arranged
On, those skilled in the art can be flexibly arranged as needed, and the present invention is not specifically limited this.
Optionally, in a kind of realization method of the present embodiment, drive system can also include control mechanism (not shown),
Working condition for determining fluid infusion apparatus according to the output result of testing agency 4, and/or, for according to testing agency 4
Output output control driving mechanism 3.
Optionally, in a kind of realization method of the present embodiment, power source 31 is motor, also, the output of the motor
Axis and leading screw 1 are not coaxial.For example, the output shaft of motor is vertical with leading screw 1, horizontal displacement or the angle in arbitrary needs.It adopts
With the realization method, provides one kind and being suitable for the size according to fluid infusion apparatus (being pumped for example, attaching) to motor, transmission gear
32, the structure design that leading screw 1 etc. is neatly laid out is changed for an angle, and the size for reducing fluid infusion apparatus is conducive to,
Improve portable degree.
Optionally, in a kind of realization method of the present embodiment, power source 31 is motor, also, the position of the motor
It is fixed.Using the realization method, for motor need to be with the prior art that leading screw moves together, have it is simple in structure,
It is stable and other effects.
Optionally, in other realization methods of the present embodiment, power source 31 is not limited to motor.For example, art technology
Personnel may be used marmem driving and motor replaced to drive.
【Embodiment 4】
Fig. 4 shows the structural schematic diagram of according to embodiments of the present invention 4 drive system, and the drive system applications are in stream
Body infusion device, for example, in applied to being pumped to the attaching of patient's liquid medicine injection.Generally speaking, the fluid that embodiment 4 is provided is defeated
Dispensing device includes driving member, driven member, driving mechanism and testing agency.
In the present embodiment, as different from Example 2, as shown in figure 4, leading screw 1 is driven member, for along first party
Piston, the screw-thread fit of driving member 2 ' and leading screw 1 are pushed to a.It is specifically described below.
In the present embodiment, with reference to Fig. 4, driving member 2 ' coordinates with the leading screw 1 as driven member so that the two can
Relative displacement is generated while relatively rotating.Also, driving member 2 ' is configured as：Leading screw 1 can be responded along promotion piston
The movement of first direction a be obstructed, generate the movement of b in a second direction, second direction b and first direction a be reversed.
In the present embodiment, driving mechanism 3 is for driving driving member 2 ' to rotate, and testing agency is for detecting driving member
Whether the movement of 2 ' b in a second direction meets setting condition.In the present embodiment, testing agency is located inside gear-box 5, therefore not
Diagram.And in other embodiments, driving member 2 ' can be located at outside gear-box 5, and testing agency can also be set to gear
Outside case 5, those skilled in the art can be flexibly arranged as needed.
In drive system provided in this embodiment, driving mechanism 3 drives driving member 2 ' to rotate, and leading screw 1 is under for example
It is moved along first direction a to push piston under the guiding for the guiding mechanism that text refers to.When leading screw 1 along first direction a movement by
When resistance, since driving member 2 ' is configured as moving b in a second direction, so keeping driving mechanism 3 to drive driving member
In the case of 2 ' rotations, the rotation of driving member 2 ' causes driving member 2 ' relative to the b movements in a second direction of leading screw 1, then,
Whether setting condition is met by the movement of testing agency detection driving member 2 ' b in a second direction.
So the drive system provided using the present embodiment 4, by making the producing by being obstructed in response to leading screw 1 of driving member 2 '
It is lively to make, and by the action of testing agency's detection driving member 2 ', accurately and timely can find or determine that fluid is defeated
Dispensing device situation (such as, if block).
【Embodiment 5】
Fig. 5 shows the structural schematic diagram of according to embodiments of the present invention 5 drive system, and power source is omitted in figure.Institute
Drive system applications are stated in fluid infusion apparatus, for example, in applied to being pumped to the attaching of patient's liquid medicine injection.Generally speaking, real
The fluid infusion apparatus for applying the offer of example 5 includes driving member, driven member, driving mechanism and testing agency.
In the present embodiment, same as Example 4 or similarly, leading screw 1 is driven member, for being pushed away along first direction a
Piston.The screw-thread fit of driving member 2 ' and leading screw 1, and response leading screw 1 is configured to along the first party for pushing piston
Movement to a is obstructed, and the movement of b in a second direction is generated.Associated description please refers to the description in embodiment 4, does not go to live in the household of one's in-laws on getting married herein
It states.
In the present embodiment, driving mechanism includes power source (for example, motor, not shown) and driving cog as shown in Figure 5
Wheel 32 '.Wherein, the final stage driven gear 321 ' of transmission gear 32 ' is straight spur gear, also, the periphery of driving member 2 '
With the straight-tooth coordinated with final stage driven gear 321 '.In other words, the not only screw-thread fit with leading screw 1 of driving member 2 ', but with end
Grade driven gear 321 ' is coordinated in a manner of cylindrical straight gear, so as to when leading screw 1 is obstructed along the movement of first direction a, produce
The movement of raw b in a second direction.
In the present embodiment, provide make driving member 2 ' in response to leading screw 1 along first direction a move be obstructed and it is reversed
Mobile structure configuration mode.Using the drive system with this structure configuration mode, leading screw 1 can be responded along first direction
Being obstructed for a and generate the action detected for testing agency 4, convenient for accurately and timely detecting the state of fluid infusion apparatus.
Optionally, in a kind of realization method of the present embodiment, testing agency 4 is pressure sensor.As shown in figure 5, pressure
Force snesor is arranged in the position opposite with one end of separate piston of driving member 2 ', for example, pressure sensor is kept and master
Dynamic component 2 ' contacts.The pressure sensor for bearing the pressure caused by the movement of b in a second direction of driving member 2 ', and
When the pressure reaches threshold value, output indicates that pressure reaches the signal of threshold value.In other realization methods of the present embodiment, also may be used
To replace pressure sensor 4 using displacement sensor.
Optionally, in the realization method, pedestal that testing agency 4 can be fixed on such as gear-box, specially be arranged
It is first-class.Those skilled in the art can be flexibly arranged as needed, and the present invention is not specifically limited this.
Optionally, in a kind of realization method of the present embodiment, drive system can also include control mechanism (not shown),
Working condition for determining fluid infusion apparatus according to the output result of testing agency 4, and/or, for according to testing agency 4
Output output control driving mechanism 3.
【Embodiment 6】
The embodiment of the present invention 6 provides a kind of fluid infusion apparatus.The fluid described device includes liquid reservoir, fluid delivery machine
Structure, piston and drive system.Wherein, the liquid reservoir is for accommodating fluid (for example, liquid).Fluid delivery mechanism and liquid reservoir
Connection, for delivering fluid to target object (for example, patient).Piston is configured in liquid reservoir axially move along liquid reservoir
It is dynamic.Drive system is then used to that piston to be made to move axially in liquid reservoir, so that the fluid in liquid reservoir is via the fluid delivery
Mechanism is delivered to object.
About the explanation of the drive system, the associated description in each embodiment above is please referred to, is not being repeated herein.
Using fluid infusion system provided in this embodiment, can accurately and timely find/determine fluid infusion apparatus
State.
【Embodiment 7】
Fig. 6 shows that a kind of overall structure diagram of according to embodiments of the present invention 7 fluid infusion apparatus, Fig. 7 are shown
A kind of structural schematic diagram of guiding mechanism.Wherein, guiding mechanism shown in Fig. 7 can be with the embodiment of the present invention 2 or implementation
The drive system that example 3 provides is used cooperatively, and piston is pushed along first direction a with guiding nut 2；Fluid infusion dress shown in fig. 6
It sets, the drive system that the embodiment of the present invention 2 or embodiment 3 provide can be used.It is described in detail below in conjunction with the accompanying drawings.
In the present embodiment, as shown in fig. 6, fluid infusion apparatus includes liquid reservoir 9, piston 7, fluid delivery mechanism, drives
Motivation structure 3, testing agency 4, leading screw 1 and nut 2.Wherein, liquid reservoir 9 is for accommodating fluid；The fluid being connected to liquid reservoir 9 is passed
Mechanism is sent to be used for Object delivery fluid, for example, delivering liquid to patient by fluid entry needle 10；Piston 7 is configured to
Along the axial movement of liquid reservoir 9 in liquid reservoir 9；Driving mechanism 3, testing agency 4, leading screw 1 and nut 2 then constitute such as embodiment
2 or embodiment 3 described in drive system.
In the present embodiment, referring to figure 6 and figure 7, nut 2 is fixedly connected with impeller 6.Impeller 6 is connect with piston 7,
For pushing piston 7.There is guide portion (for example, rectangular collars) 61 in one end of the separate piston 7 of impeller 6.In impeller 6
Periphery have the fixed guide sleeve 8 in position, guide portion 61 be embedded in guide sleeve 8 in guide groove.Turn as a result, with lead screw 1
Dynamic, nut 2 can generate the linear motion of forward or backward.
In the present embodiment, with reference to Fig. 2, Fig. 6 and Fig. 7, under driving force effect, leading screw 1 with transmission gear 32 final stage
The rotation of driven gear 321 and rotate so that (in an embodiment of the present invention, the two can be total to for nut 2 and impeller 6
With as slave unit) under the guiding of guide sleeve 8 piston 7 is pushed along first direction a, so that fluid be arranged from liquid reservoir 9
Go out.
It should be noted that the guiding mechanism referred in the present embodiment and Examples below, is intended to aid in illustrating
The course of work for the drive system that related embodiment of the present invention is provided, clearly to describe each embodiment of the present invention,
And the protection domain of various embodiments of the present invention is not construed as limiting.
【Embodiment 8】
In embodiment 7, in conjunction with Fig. 7, the guiding mechanism moved axially along leading screw 1 for guiding nut 2 is said
Bright, which is suitable for coordinating with the drive system that embodiment 2 and embodiment 3 are provided.
In the present embodiment 8, then a kind of drive system cooperation for being suitable for being provided with embodiment 4 and embodiment 5 is provided
Guiding mechanism.The guiding mechanism (not shown) includes：The fixed guiding of the first guide portion and position being arranged on leading screw 1
Part, the guide part, which has, to be coordinated with first guide portion so that the second guide portion that leading screw 1 is moved axially along itself.Its
In, using 2 ' position of driving member as boundary, first guide portion and the guide part are arranged at the remote of driving member 2 '
Side from piston.
Optionally, in a kind of realization method of the present embodiment, one of first guide portion and the second guide portion
For projective structure, another one is then the recess structure coordinated with the projective structure.Illustratively, the first guide portion is similar to figure
Guide portion 61 shown in 7, the second guide portion are similar to the guide groove of guide sleeve 8 shown in Fig. 7.
Multiple embodiments according to the present invention are described in detail above in association with attached drawing.Those skilled in the art should
Understand, component, mechanism in various embodiments etc. may be used reasonable manner and be combined.Certainly, pass through dependency structure
Combination, the drive system and fluid infusion apparatus of other embodiments of the present invention can also have above-mentioned multiple advantages simultaneously.
Those skilled in the art are based on technology provided by the invention and design philosophy, carry out combination, increase and replacement of feature etc.,
This is all belonged to the scope of protection of the present invention.
The term and wording used in description of the invention is just to for example, be not intended to constitute restriction.Ability
Field technique personnel should be appreciated that under the premise of not departing from the basic principle of disclosed embodiment, to the above embodiment
In each details can carry out various change.Therefore, the scope of the present invention is only determined by claim, in the claims, unless
It is otherwise noted, all terms should be understood by the broadest rational meaning.
Claims (13)
1. a kind of drive system of fluid infusion apparatus, the drive system include：
Driving member；
Driving mechanism, the driving mechanism is for driving the driving member to rotate；With
Driven member；
It is characterized in that,
The driven member is configured to coordinate with the driving member so that the two can generate relatively while relatively rotating
Displacement, wherein one of the driving member and driven member are configured as：The driving member and driven structure can be responded
The other of part along the piston for pushing the fluid infusion apparatus first direction move be obstructed, generate in a second direction
Movement, the second direction and the first direction are reversed；
The drive system further includes testing agency, for detecting one of the driving member and driven member along described
The situation of movement in two directions.
2. drive system as described in claim 1, which is characterized in that the testing agency includes：
Pressure sensor is arranged opposite far from one end of the piston with one of the driving member and driven member
Position, move generated pressure along the second direction for detecting one of the driving member and driven member
Power.
3. drive system as described in claim 1, which is characterized in that the testing agency includes：
Displacement sensor, for detecting the displacement of one of the driving member and driven member along the second direction.
4. drive system as claimed in claim 2 or claim 3, which is characterized in that the drive system further includes：
Control mechanism, the control mechanism are used to determine the fluid infusion apparatus according to the output result of the testing agency
Working condition, and/or, for driving mechanism described in the output output control according to the testing agency.
5. drive system as claimed in any one of claims 1-3, which is characterized in that
The driving member is leading screw；
The screw-thread fit of the driven member and the driving member, for pushing the piston along the first direction.
6. drive system as claimed in claim 5, which is characterized in that the driving mechanism includes：
Power source；
Transmission gear；
Wherein, the final stage driven gear of the transmission gear is located at the one end of the leading screw far from the piston, for it is described
Leading screw rotates together.
7. drive system as claimed in claim 6, which is characterized in that
The final stage driven gear of the transmission gear is fixedly connected with the leading screw；
The final stage driving gear and final stage driven gear of the transmission gear are straight spur gear；
There is the permission final stage driven gear to be moved along the second direction in the gear-box for accommodating the transmission gear
Space.
8. drive system as claimed in claim 6, which is characterized in that
The final stage driven gear of the transmission gear opposite can be slidably connected with the leading screw.
9. drive system as claimed in any one of claims 1-3, which is characterized in that
The driven member is leading screw, for pushing the piston along the first direction；
The screw-thread fit of the driving member and the leading screw.
10. drive system as claimed in claim 9, which is characterized in that the driving mechanism includes：
Power source；
Transmission gear；
Wherein, the final stage driven gear of the transmission gear is straight spur gear；
The periphery of the driving member has the straight-tooth coordinated with the final stage driven gear.
11. the drive system as described in claim 6 or 10, which is characterized in that
The power source is motor, and the output shaft of the motor and the leading screw are not coaxial.
12. the drive system as described in claim 6 or 10, which is characterized in that
The power source is motor, and the position of the motor is fixed.
13. a kind of fluid infusion apparatus, which is characterized in that including：
Liquid reservoir, for accommodating fluid；
Fluid delivery mechanism is connected to the liquid reservoir, is used for Object delivery fluid；
Piston is configured in the liquid reservoir move axially along the liquid reservoir；And
Drive system as described in any one of claim 1-12, for making the piston axially be moved in the liquid reservoir
It is dynamic, so that the fluid in the liquid reservoir is delivered to object via the fluid delivery mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817809.7A CN107456625B (en) | 2017-09-12 | 2017-09-12 | Fluid infusion apparatus and its drive system |
| PCT/CN2018/074572 WO2019052111A1 (en) | 2017-09-12 | 2018-01-30 | Fluid infusion device and driving system therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817809.7A CN107456625B (en) | 2017-09-12 | 2017-09-12 | Fluid infusion apparatus and its drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107456625A CN107456625A (en) | 2017-12-12 |
| CN107456625B true CN107456625B (en) | 2018-08-14 |
Family
ID=60551385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817809.7A Expired - Fee Related CN107456625B (en) | 2017-09-12 | 2017-09-12 | Fluid infusion apparatus and its drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107456625B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019052111A1 (en) * | 2017-09-12 | 2019-03-21 | 美敦力公司 | Fluid infusion device and driving system therefor |
| CN108939203A (en) * | 2018-08-23 | 2018-12-07 | 苏州新生命医疗科技有限公司 | A kind of driving structure and high-precision drug infusion system of drug infusion system |
| EP3970767A4 (en) * | 2019-05-17 | 2022-12-14 | Medtrum Technologies Inc. | Drug infusion device |
| EP3969076A4 (en) * | 2019-05-17 | 2023-06-14 | Medtrum Technologies Inc. | Drug infusion device with multiple infusion modes |
| EP4007624A4 (en) * | 2019-08-01 | 2023-04-05 | Medtrum Technologies Inc. | Driving apparatus and drug infusion device |
| CN115068739A (en) * | 2022-07-14 | 2022-09-20 | 湖南千山医疗器械有限公司 | Disposable insulin pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001085233A2 (en) * | 2000-05-08 | 2001-11-15 | Sterling Medivations, Inc. | Micro infusion drug delivery device |
| WO2002028456A1 (en) * | 2000-10-05 | 2002-04-11 | Novo Nordisk A/S | A medication delivery system with improved dose accuracy |
| CN102149417A (en) * | 2008-09-12 | 2011-08-10 | 霍夫曼-拉罗奇有限公司 | Dosing unit and ambulatory infusion device comprising dosing unit |
| US9308318B2 (en) * | 2001-05-18 | 2016-04-12 | Deka Products Limited Partnership | Infusion pump assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144384B2 (en) * | 2002-09-30 | 2006-12-05 | Insulet Corporation | Dispenser components and methods for patient infusion device |
| US20050020980A1 (en) * | 2003-06-09 | 2005-01-27 | Yoshio Inoue | Coupling system for an infusion pump |
| US20060173439A1 (en) * | 2005-01-18 | 2006-08-03 | Thorne Gale H Jr | Syringe drive system |
| US7922695B2 (en) * | 2007-10-18 | 2011-04-12 | Roche Diagnostics Operations, Inc. | Drug delivery pump drive using linear piezoelectric motor |
-
2017
- 2017-09-12 CN CN201710817809.7A patent/CN107456625B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001085233A2 (en) * | 2000-05-08 | 2001-11-15 | Sterling Medivations, Inc. | Micro infusion drug delivery device |
| WO2002028456A1 (en) * | 2000-10-05 | 2002-04-11 | Novo Nordisk A/S | A medication delivery system with improved dose accuracy |
| US9308318B2 (en) * | 2001-05-18 | 2016-04-12 | Deka Products Limited Partnership | Infusion pump assembly |
| CN102149417A (en) * | 2008-09-12 | 2011-08-10 | 霍夫曼-拉罗奇有限公司 | Dosing unit and ambulatory infusion device comprising dosing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107456625A (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107456625B (en) | Fluid infusion apparatus and its drive system | |
| CN205252204U (en) | Medicine transmitter drive arrangement | |
| US20230125668A1 (en) | Systems for determining insulin on board and recommending insulin therapy, and related methods | |
| US10712148B2 (en) | Optical determination of the position of the stopper in glass ampoules | |
| CN201524307U (en) | Multifunctional injection pump with TCI learning mode | |
| CN1202872C (en) | Portable automatic insulin injector with blood sugar detection function | |
| CN108348677A (en) | Driving mechanism for charge pump | |
| US20230173174A1 (en) | Bilaterally driven intelligent control infusion device | |
| CN1589914A (en) | Liquid injector | |
| JP2010505474A (en) | Micropump-operated drug delivery system | |
| CN106999665A (en) | Medicament delivery device with air security feature in cylinder | |
| CN104436362B (en) | A kind of infusion pump | |
| JP2017127672A (en) | Dermally affixed device for intravenous access | |
| Jackman et al. | For insulin infusion: a miniature precision peristaltic pump and silicone rubber reservoir | |
| CN104027867A (en) | Portable intelligent dual-function diabetes treatment pump | |
| CN108421133A (en) | Drug delivery device and its transmission mechanism | |
| Karia et al. | An affordable insulin pump for type-1 diabetic patients: A case study of user-in-the-loop approach to engineering design | |
| CN108543155A (en) | A kind of repeatable dressing insulin pump | |
| JP2008018088A (en) | Syringe | |
| CN206867472U (en) | A kind of novel insulin pump with external catheter needle monitoring function | |
| CN113663158B (en) | Double-side driving closed-loop artificial pancreas | |
| RU115210U1 (en) | PARACORPORAL PORTABLE DISPENSER OF MEDICINAL SOLUTIONS | |
| US20230117504A1 (en) | Drive mechanism for positive displacement pumps | |
| TW201545782A (en) | Hybrid infusion device housing | |
| Brindha et al. | Implementation of Multi-Functional Pump Therapy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20210912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |