CN110201265A - Infusion device - Google Patents
Infusion device Download PDFInfo
- Publication number
- CN110201265A CN110201265A CN201910622456.4A CN201910622456A CN110201265A CN 110201265 A CN110201265 A CN 110201265A CN 201910622456 A CN201910622456 A CN 201910622456A CN 110201265 A CN110201265 A CN 110201265A
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- CN
- China
- Prior art keywords
- channel
- shell
- lid
- chamber
- annular seal
- 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.)
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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
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M2005/14506—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons mechanically driven, e.g. spring or clockwork
Abstract
The present invention provides a kind of infusion devices, are related to injecting apparatus technical field, infusion device provided by the invention, comprising: shell, piston component and pushing device；Piston component setting is separated to form first annular seal space and the second seal chamber in shell, and by the inner cavity of shell；It pushes device to be used to make piston component that there is the trend moved along the inner cavity of shell, to change the volume of the second seal chamber, and compresses first annular seal space；First annular seal space is for accommodating medicament, and shell is equipped with the first passage of connection first annular seal space；Shell is equipped with the second channel of the second seal chamber of connection, sets the first current limiting component in second channel, the first current limiting component alleviates the unstable technical problem of infusion rate in the prior art for changing the aperture of second channel with the movement speed of regulating piston component.
Description
Technical field
The present invention relates to injecting apparatus technical fields, more particularly, to a kind of infusion device.
Background technique
During traditional infusion, patient needs to utilize medical fluid pressure difference in the transfusion room of hospital with sitting or the posture to repose
In vivo by medical fluid input, because infusion limits patient activity, the Anxiety of the patient increased occupies the long-time of Medical Treatment Room,
Also reduce the utilization rate of medical resource.In addition, injection speed is influenced by infusion pressure, thus in patient's moving process easily
Cause injection speed unstable.Injection speed reduces, and transfusion time is longer, Yi Yinfa patient pain；Injection speed is too fast then
Patient body will be made to generate local swelling, and be unfavorable for human drug absorption.
Summary of the invention
The purpose of the present invention is to provide a kind of infusion devices, to alleviate the unstable technology of infusion rate in the prior art
Problem.
In a first aspect, infusion device provided by the invention, comprising: shell, piston component and pushing device；The piston group
Part setting is separated to form first annular seal space and the second seal chamber in the shell, and by the inner cavity of the shell；The shell
With along its axially extending inner cavity, the device that pushes is used to that the piston component to be made to have along the inner cavity of shell axial direction
Mobile trend to change the volume of second seal chamber, and compresses the first annular seal space；The first annular seal space is used for
Medicament is accommodated, and the shell is equipped with the first passage for being connected to the first annular seal space；The shell is equipped with connection described second
The second channel of seal chamber sets the first current limiting component in the second channel, and first current limiting component is for changing described
The aperture in two channels, to adjust the movement speed of the piston component.
With reference to first aspect, the present invention provides the first possible embodiments of first aspect, wherein described first
Current limiting component includes: the first ring set, the first core, the first elastic element and regulating part；First ring set is connected to described
In two channels, first core and first elastic element are separately positioned in the second channel, first elasticity
Element configuration is at the trend for making first core have closure first ring set；The regulating part is for driving described first
Core is to adjust the aperture of the second channel.
The possible embodiment of with reference to first aspect the first, second the present invention provides first aspect are possible
Embodiment, wherein the regulating part is threadedly engaged in first ring set, and the regulating part abuts first core.
With reference to first aspect, the present invention provides the third possible embodiments of first aspect, wherein the shell
Include: body, the first lid, partition and the second lid, it is internal that the partition is connected to the set, first cover cap together in
One end of the body, the other end of second cover cap together in the body；The body is arranged the piston component, institute
It states and forms second seal chamber between piston component and first lid；The second channel is arranged in first lid
On.
The third possible embodiment with reference to first aspect, the 4th kind the present invention provides first aspect are possible
Embodiment, wherein the second channel includes: the first groove and the first hole location；First groove is arranged described first
Lid is towards the side of second seal chamber；First hole location is arranged on first lid, and first hole location
It is connected to first recessed fluid.
The third possible embodiment with reference to first aspect, the 5th kind the present invention provides first aspect are possible
Embodiment, wherein the piston component includes: the first cock body, axis and the second cock body；The axis is connected to described first
Between cock body and second cock body, and the axis is inserted in the partition；It is axially disposed with along the shell described
First lid, first cock body, the partition, second cock body and second lid, first cock body, it is described every
The inner cavity of the body is separated to form second seal chamber being sequentially distributed, first chamber, by plate and second cock body
One seal chamber and second chamber；The body is equipped with the first stomata for being connected to the first chamber, and connection described second
Second stomata of chamber.
The 5th kind of possible embodiment with reference to first aspect, the 6th kind the present invention provides first aspect are possible
Embodiment, wherein the partition is equipped with the second groove, second groove and described the towards the side of second cock body
One passage；Second cock body is equipped with the first lug boss compatible with second groove.
With reference to first aspect, the present invention provides the 7th kind of possible embodiments of first aspect, wherein the shell
It is equipped with the third channel for being connected to the first annular seal space；The second current limiting component, second limit are equipped in the third channel
Stream component outflows for obstructing fluid in the first annular seal space from the third channel, and when fluid flows to institute through third channel
The third channel is opened when stating first annular seal space.
The 7th kind of possible embodiment with reference to first aspect, the 8th kind the present invention provides first aspect are possible
Embodiment, wherein second current limiting component includes: the second ring set, the second core and the second elastic element；Second ring
Set is connected in the third channel, and second core and second elastic element are arranged in the third channel,
Second elastic element is used to that second core to be made to have the trend for blocking second ring set.
With reference to first aspect, the present invention provides the 9th kind of possible embodiments of first aspect, wherein the pushing
Device includes third elastic element, and the third elastic element compresses the first annular seal space for having the piston component
Trend.
The embodiment of the present invention brings following the utility model has the advantages that being arranged in shell using piston component, and will be in shell
Chamber is separated to form first annular seal space and the second seal chamber, pushes device and is used to making piston component to have and moves along the inner cavity of shell
Trend to change the volume of the second seal chamber, and compresses first annular seal space, and first annular seal space is for accommodating medicament, and shell is set
There is the first passage of connection first annular seal space, shell is equipped with the second channel of the second seal chamber of connection, sets first in second channel
Current limiting component, the first current limiting component are led in a manner of the movement speed of regulating piston component for changing the aperture of second channel
The aperture that the first current limiting component adjusts second channel is crossed, so that it is guaranteed that the movement speed of piston component is stablized, and then makes infusion speed
Rate is stablized.In addition, reposing without patient by pushing device drive piston component or sitting waiting, it can be achieved that patient exists
It is moved freely in infusion process.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
Technical solution in order to illustrate more clearly of the specific embodiment of the invention or in the related technology, below will be to specific
Attached drawing needed in embodiment or description of Related Art is briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the cross-sectional view one of infusion device provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view two of infusion device provided in an embodiment of the present invention；
Fig. 3 is the enlarged diagram of location A in Fig. 1；
Fig. 4 is the schematic diagram of the regulating part of infusion device provided in an embodiment of the present invention；
Fig. 5 is the enlarged diagram of B location in Fig. 2；
Fig. 6 is the enlarged diagram of location of C in Fig. 1.
Icon: 100- shell；101- first annular seal space；The second seal chamber of 102-；103- first passage；1031- sheet rubber；
104- second channel；The first groove of 1041-；The first hole location of 1042-；The first current limiting component of 105-；The first ring set of 1051-；1052-
First core；The first elastic element of 1053-；1054- regulating part；1055- first through hole；The second through-hole of 1056-；106- third is logical
Road；The second current limiting component of 107-；The second ring set of 1071-；The second core of 1072-；The second elastic element of 1073-；The first chamber of 108-
Room；The first stomata of 1081-；109- second chamber；The second stomata of 1091-；110- body；The first lid of 120-；130- partition；
The second groove of 131-；132- third groove；The second lid of 140-；200- piston component；The first cock body of 210-；The second protrusion of 211-
Portion；220- axis；The second cock body of 230-；The first lug boss of 231-；300- pushes device.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
As shown in Figure 1, infusion device provided in an embodiment of the present invention, comprising: shell 100, piston component 200 and pusher
Part 300；The setting of piston component 200 is separated to form first annular seal space 101 and second in shell 100, and by the inner cavity of shell 100
Seal chamber 102；Shell 100 has along its axially extending inner cavity, pushes device 300 for having piston component 200 along shell
The trend of the inner cavity axial movement of body 100, to change the volume of the second seal chamber 102, and compresses first annular seal space 101；First
Seal chamber 101 is for accommodating medicament, and shell 100 is equipped with the first passage 103 of connection first annular seal space 101；Shell 100 is equipped with
It is connected to the second channel 104 of the second seal chamber 102, the first current limiting component 105, the first current limiting component 105 are set in second channel 104
For changing the aperture of second channel 104, with the movement speed of regulating piston component 200.
Specifically, piston component 200 is inserted in shell 100, and is set between piston component 200 and the inner wall of shell 100
There is sealing ring；First annular seal space 101 pushes device 300 and drives piston component 200, so that compression first is close for storing medicament
The space of chamber 101 is sealed, and then the medicament in first annular seal space 101 can be discharged by first passage 103；In the process, can make
It is connected to human vein and first passage 103 with perfusion tube, so that medicament is injected to patient's body.When 101 quilt of first annular seal space
In compression process, the second the easy of seal chamber 102 is expanded or shunk, and then gas flows into the second seal chamber through second channel 104
102 or discharge.The aperture of second channel 104 is adjusted by the first current limiting component 105, and then can limit fluid to flow through second logical
The flow velocity in road 104, it is ensured that the movement speed of piston component 200 is stablized, so that transfusion speed be made to stablize.Pushing device 300 can adopt
With spring or elastic rubber band, for pushing device 300 using spring, spring be connected to piston component 200 and shell 100 it
Between so that piston component 200 have compression first annular seal space 101 movement tendency.
When medicament injects first annular seal space 101, syringe can be used to input first annular seal space 101 by first passage 103
In, 101 internal pressure of first annular seal space increases, and overcomes the elastic force effect for pushing device 300 to move to push piston component 200
It is dynamic；When infusion, infusion pipeline is connected between human vein and first passage 103, is pushed device 300 and is pushed piston component 200
To compress first annular seal space 101, and then the medicament inside first annular seal space 101 is made to flow through first passage 103 and infusion pipeline
Flow into patient's body.
As shown in figure 3, the first current limiting component 105 includes: the first ring set 1051, the first core 1052, the first elastic element
1053 and regulating part 1054；First ring set 1051 is connected in second channel 104, the first core 1052 and the first elastic element
1053 are separately positioned in second channel 104, and the first elastic element 1053 is configured to that the first core 1052 is made to have closure first
The trend of ring set 1051；Regulating part 1054 is for driving the first core 1052 to adjust the aperture of second channel 104.Wherein,
The inner wall of one ring set 1051 and second channel 104, which passes through, to be threadedly engaged, and is coated with sealant, so that it is guaranteed that second channel 104
Sealing.
Specifically, the first ring set 1051 passes through and is threadedly engaged or is fixedly connected in second channel 104 by snap ring, the
One core 1052 is configured to sphere, and the first elastic element 1053 is configured to spring, the first core 1052 and the first elastic element
1053 are respectively positioned in second channel 104, and the first core 1052 be connected to the first elastic element 1053 and the first ring set 1051 it
Between, the first elastic element 1053 pushes the first core 1052, so that having the first core 1052 blocks the first ring set 1051
Trend；Regulating part 1054 is for pushing the first core 1052, so that the spacing of the first core 1052 and the first ring set 1051 is adjusted,
When the first core 1052 is separated with the first ring set 1051, the gap between the first core 1052 and the first ring set 1051 is for stream
Body passes in and out the second seal chamber 102；Adjust the spacing of the first core 1052 and the first ring set 1051, can be changed the first core 1052 with
Gap size between first ring set 1051, and then realize the aperture regulation of second channel 104.
Further, when 102 air pressure inside of the second seal chamber is less than external air pressure, under the action of draught head, first
Core 1052 squeezes the first elastic element 1053, so that external gas passes through between the first core 1052 and the first ring set 1051
Gap enters the second seal chamber 102；When injection, changed between the first core 1052 and the first ring set 1051 by regulating part 1054
The size in gap, and then the aperture of second channel 104 is adjusted, so as to adjust the deflation rate of the second seal chamber 102, realize
Adjusting to injection rate can be relieved influence of the patient station prone position gesture transformation to injection rate with this, be conducive to improve injection speed
The stability of rate.
Further, regulating part 1054 is threadedly engaged in the first ring set 1051, and regulating part 1054 abuts the first core
1052.Wherein, the axis of regulating part 1054 is parallel to the axis of the first ring set 1051, by rotation regulating part 1054 so as to
Adjust the spacing of the first core 1052 and regulating part 1054.
As shown in Figure 3 and Figure 4, regulating part 1054 is threadedly engaged in the inner hole of the first ring set 1051, on regulating part 1054
Equipped with through-hole, so as to when regulating part 1054, which squeezes the first core 1052, separates the first core 1052 with the first ring set 1051,
Fluid can pass in and out the second seal chamber 102 by the through-hole of regulating part 1054, the inner hole of the first ring set 1051 and second channel 104.
Further, regulating part 1054 is equipped with first through hole 1055 and the second through-hole 1056, first through hole 1055 and the
The connection of two through-holes 1056, the axis of first through hole 1055 is parallel with the axis of regulating part 1054, and the axis of first through hole 1055
Angle is formed with the axis of the second through-hole 1056.And then can be blocked to avoid the second through-hole 1056 by the first core 1052, thus
Ensure that fluid can flow through first through hole 1055, the second through-hole 1056, the inner hole of the first ring set 1051 and the disengaging of second channel 104 the
Two seal chambers 102.
As shown in Fig. 2, shell 100 includes: body 110, the first lid 120, partition 130 and the second lid 140, partition
130 are connected in body 110, and the first lid 120 is covered on one end of body 110, and the second lid 140 is covered on body 110
The other end；Body 110 is arranged piston component 200, and the second seal chamber 102 is formed between piston component 200 and the first lid 120；
Second channel 104 is arranged on the first lid 120.Wherein, the first lid 120 and the second lid 140 pass through with body 110 respectively
It is threadedly engaged connection, piston component 200 passes through partition 130, and it is close that second is formed between piston component 200 and the first lid 120
Chamber 102 is sealed, forms first annular seal space 101 between piston component 200 and partition 130.Wherein, partition 130 is integrated with body 110
Structure.
As depicted in figs. 1 and 2, second channel 104 includes: the first groove 1041 and the first hole location 1042；First groove
1041 are arranged in the first lid 120 towards the side of the second seal chamber 102；First hole location 1042 is arranged on the first lid 120,
And first hole location 1042 and the first groove 1041 be in fluid communication.Wherein, the first hole location 1042 radially extending along the first lid 120
And it is connected to the first groove 1041, and when piston component 200 compresses the second seal chamber 102, piston component 200 and the first lid 120
The distance between be gradually reduced；When piston component 200 abuts the first lid 120, due to having gas in the first groove 1041,
And then may insure that 200 pressure at both sides of piston component balances, to avoid living caused by draining because of 102 internal gas of the second seal chamber
Plug assembly 200 is difficult to move under gas pressure.
As depicted in figs. 1 and 2, piston component 200 includes: the first cock body 210, axis 220 and the second cock body 230；Axis
220 are connected between the first cock body 210 and the second cock body 230, and axis 220 is inserted in partition 130；Along shell 100 it is axial according to
It is secondary to be provided with the first lid 120, the first cock body 210, partition 130, the second cock body 230 and the second lid 140, the first cock body 210,
The inner cavity of body 110 is separated to form the second seal chamber 102 being sequentially distributed, first chamber by partition 130 and the second cock body 230
108, first annular seal space 101 and second chamber 109；Body 110 is equipped with the first stomata 1081 of connection first chamber 108, with
And the second stomata 1091 of connection second chamber 109.
Specifically, partition 130 be equipped with axially through axis hole, axis 220 is inserted in axis hole, and axis hole and axis
Sealing ring is equipped between 220；It pushes device 300 to be arranged in second chamber 109, and pushes device 300 and be connected to the second cock body
230 and second between lid 140；When being filled with medicament in first annular seal space 101,101 internal pressure of first annular seal space is increased, living
Plug assembly 200 is moved along body 110, pushes device 300 to squeeze, in the process, first annular seal space 101 and the second sealing
102 volume of chamber increases, the volume-diminished of first chamber 108 and second chamber 109, and 108 internal gas of first chamber passes through first
Stomata 1081 is discharged, and 109 internal gas of second chamber is discharged by the second stomata 1091；When injection, pushes device 300 and push work
Plug assembly 200 is moved along body 110, and the volume of first annular seal space 101 and the second seal chamber 102 is gradually reduced, first chamber 108
It is gradually increased with the volume of second chamber 109, the fluid flow rate of the fluid flow rate of the first stomata 1081 and the second stomata 1091 is equal
It should be greater than the fluid flow rate under 104 full-gear of second channel, and then ensure 109 intake and exhaust of first chamber 108 and second chamber
It is smooth, it is ensured that transfusion speed is determined by the aperture of second channel 104.
As shown in Figure 1, partition 130 is equipped with the second groove 131, the second groove 131 and the towards the side of the second cock body 230
One channel 103 is in fluid communication；Second cock body 230 is equipped with first lug boss 231 compatible with the second groove 131.When first
When 101 smaller volume of seal chamber, the first lug boss 231 is plugged in the second groove 131, so as to further by first annular seal space
101 Chinese medicines discharge, to reduce medicament residual quantity in first annular seal space 101.
As shown in figures 1 to 6, the drainage hole that connection first passage 103 is set in the second groove 131, when the first lug boss 231
When being inserted into the second groove 131,131 inside medicament of the second groove flows through drainage hole and first passage 103 inputs patient's body.
Further, it is fixedly connected with sheet rubber 1031 in first passage 103, by sheet rubber 1031 by first passage
103 block, so that it is guaranteed that medicament is clean, when injection can pierce through sheet rubber 1031 by needle tubing, and so that needle tubing is inserted in first and lead to
Road 103, and then perfusion tube is made to be connected to first passage 103.
As depicted in figs. 1 and 2, partition 130 is equipped with third groove 132, the first cock body towards the side of the first cock body 210
210 are equipped with second lug boss 211 compatible with third groove 132；When the smaller volume of first chamber 108, second is convex
It plays portion 211 to be inserted in third groove 132, to increase the movement of piston component 200 in certain axial dimension infusion device
Stroke, and then the agent capacity of first annular seal space 101 can be increased.
As shown in Fig. 2, shell 100 is equipped with the third channel 106 of connection first annular seal space 101；It is set in third channel 106
There is the second current limiting component 107, the second current limiting component 107 is for obstructing in first annular seal space 101 fluid from outside third channel 106
Stream, and third channel 106 is opened when fluid flows to first annular seal space 101 through third channel 106.Wherein, the second current limiting component
107 are configured to check valve, and medicament can be injected in first annular seal space 101 by the second current limiting component 107 and third channel 106, note
The second current limiting component 107 blocks third channel 106 when penetrating, so that medicament be avoided to leak.
As shown in Figure 2 and Figure 5, the second current limiting component 107 includes: the second ring set 1071, the second core 1072 and the second bullet
Property element 1073；Second ring set 1071 is connected in third channel 106, and the second core 1072 and the second elastic element 1073 are all provided with
It sets in third channel 106, the second elastic element 1073 is used to that the second core 1072 to be made to have to block becoming for the second ring set 1071
Gesture.Wherein, the inner wall of the lateral wall of the second ring set 1071 and third channel 106 is tightly connected, and third channel 106 is arranged in partition
On 130, and third channel 106 is connected to first annular seal space 101；Second core 1072 is connected to the second ring set 1071 and the second bullet
Between property element 1073.It is injected during medicament into first annular seal space 101, the second core 1072 is acted in insecticide pressure and being pushed
Contract the second elastic element 1073, to make to generate gap between the second core 1072 and the second ring set 1071, and then medicament can flow
Enter first annular seal space 101 through the second ring set 1071 and third channel 106；When stopping injecting medicament into first annular seal space 101,
Second elastic element 1073 pushes the second core 1072, so that the second core 1072 be made to abut the second ring set 1071, and then makes the
Two ring sets 1071 are blocked, and medicament in first annular seal space 101 is avoided to leak.
Further, pushing device 300 includes third elastic element, and third elastic element is for having piston component 200
Have the tendency that compressing first annular seal space 101.Wherein, the first elastic element 1053, the second elastic element 1073 and third elasticity member
Spring can be used in part；When being filled with medicament in first annular seal space 101,300 stress flexible deformation of device is pushed；Infusion process
In, the elastic force for pushing device 300 drives piston component 200, reposes or sits without hanging flask for medicinal preparations and ensuring that patient is in
Shell 100 can be bundled at patients wrist, so that patient exists by standing position gesture with providing the hydraulic of medicament input human body using bandage
It walks about in infusion process.Patient can be infused when walking, improve mobile convenience, and without occupying medical bed, section
It saves in hospital's waiting time, advantageously reduces medical resource occupancy.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of infusion device characterized by comprising shell (100), piston component (200) and pushing device (300)；
The piston component (200) setting is separated to form the in the shell (100), and by the inner cavity of the shell (100)
One seal chamber (101) and the second seal chamber (102)；
The shell (100) has along its axially extending inner cavity, and the pushing device (300) is for making the piston component
(200) there is the trend moved axially along the inner cavity of the shell (100), to change the volume of second seal chamber (102),
And compress the first annular seal space (101)；
The first annular seal space (101) is for accommodating medicament, and the shell (100) is equipped with and is connected to the first annular seal space
(101) first passage (103)；
The shell (100) is equipped with the second channel (104) for being connected to second seal chamber (102), the second channel (104)
Inside set the first current limiting component (105), first current limiting component (105) for changing the second channel (104) aperture, with
Adjust the movement speed of the piston component (200).
2. infusion device according to claim 1, which is characterized in that first current limiting component (105) includes: the first ring
Cover (1051), the first core (1052), the first elastic element (1053) and regulating part (1054)；
First ring set (1051) is connected in the second channel (104), first core (1052) and described first
Elastic element (1053) is separately positioned in the second channel (104), and first elastic element (1053) is configured to make institute
Stating the first core (1052) has the trend for blocking first ring set (1051)；
The regulating part (1054) is for driving first core (1052) to adjust the aperture of the second channel (104).
3. infusion device according to claim 2, which is characterized in that the regulating part (1054) is threadedly engaged in described
One ring set (1051), and the regulating part (1054) abuts first core (1052).
4. infusion device according to claim 1, which is characterized in that the shell (100) includes: body (110), first
Lid (120), partition (130) and the second lid (140), the partition (130) are connected in the body (110), and described the
One lid (120) is covered on one end of the body (110), and second lid (140) is covered on the another of the body (110)
One end；
The body (110) is arranged the piston component (200), the piston component (200) and first lid (120) it
Between form second seal chamber (102)；
The second channel (104) is arranged on first lid (120).
5. infusion device according to claim 4, which is characterized in that the second channel (104) includes: the first groove
(1041) and the first hole location (1042)；
First groove (1041) setting is in first lid (120) towards the side of second seal chamber (102)；
First hole location (1042) is arranged on first lid (120), and first hole location (1042) and described the
One groove (1041) is in fluid communication.
6. infusion device according to claim 4, which is characterized in that the piston component (200) includes: the first cock body
(210), axis (220) and the second cock body (230)；
The axis (220) is connected between first cock body (210) and second cock body (230), and the axis
(220) partition (130) are inserted in；
First lid (120), first cock body (210), the partition are axially disposed with along the shell (100)
(130), second cock body (230) and second lid (140), first cock body (210), the partition (130) and
Second cock body (230) inner cavity of the body (110) is separated to form second seal chamber (102) being sequentially distributed,
First chamber (108), first annular seal space (101) and second chamber (109)；
The body (110) is equipped with the first stomata (1081) for being connected to the first chamber (108), and connection described second
The second stomata (1091) of chamber (109).
7. infusion device according to claim 6, which is characterized in that the partition (130) is towards second cock body
(230) side is equipped with the second groove (131), and second groove (131) and the first passage (103) are in fluid communication；
Second cock body (230) is equipped with second groove (131) compatible first lug boss (231).
8. infusion device according to claim 1, which is characterized in that the shell (100) is equipped with connection described first
The third channel (106) of seal chamber (101)；
The second current limiting component (107) are equipped in the third channel (106), second current limiting component (107) is for obstructing institute
It states first annular seal space (101) interior fluid to outflow from the third channel (106), and when fluid flows to institute through third channel (106)
The third channel (106) are opened when stating first annular seal space (101).
9. infusion device according to claim 8, which is characterized in that second current limiting component (107) includes: the second ring
Cover (1071), the second core (1072) and the second elastic element (1073)；
Second ring set (1071) is connected in the third channel (106), second core (1072) and described second
Elastic element (1073) is arranged in the third channel (106), and second elastic element (1073) is for making described the
Two cores (1072) have the trend for blocking second ring set (1071).
10. infusion device according to claim 1, which is characterized in that the pushing device (300) includes third elasticity member
Part, the third elastic element are used to that the piston component (200) to be made to have the trend for compressing the first annular seal space (101).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910622456.4A CN110201265B (en) | 2019-07-10 | 2019-07-10 | Infusion device |
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|---|---|---|---|
| CN201910622456.4A CN110201265B (en) | 2019-07-10 | 2019-07-10 | Infusion device |
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| CN110201265B CN110201265B (en) | 2021-06-11 |
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| CN110201265B (en) | 2021-06-11 |
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