CN113082363A - Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector - Google Patents
Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector Download PDFInfo
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- CN113082363A CN113082363A CN202110359804.0A CN202110359804A CN113082363A CN 113082363 A CN113082363 A CN 113082363A CN 202110359804 A CN202110359804 A CN 202110359804A CN 113082363 A CN113082363 A CN 113082363A
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- liquid storage
- storage bag
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- supporting tube
- infusion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them 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
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
- A61M2005/1657—Filter with membrane, e.g. membrane, flat sheet type infusion filter
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an infusion pump and a working method thereof, an infusion joint and an indwelling needle with the infusion joint, wherein the infusion pump comprises an inlet shell, a liquid storage shell and an outlet shell, a liquid storage bag, a supporting tube and a microflow assembly are arranged in the liquid storage shell, the liquid storage bag is a stepped shaft pipe fitting with flange structures at two ends and elastic stretching property, the microflow assembly is inserted into the supporting tube, the supporting tube is inserted into the liquid storage bag, and the liquid storage bag is stretched in the axial direction and is arranged in the liquid storage shell; the liquid medicine flows into a liquid storage bag in the liquid storage shell through the inlet shell and is converted into slow continuous positive pressure microflow through the microflow component to flow to the outlet shell. According to the infusion pump, the liquid storage bag is of the two-end flange structure, so that the liquid storage bag can be completely installed through physical connection, the use of a binder is avoided, the installation can be rapidly completed, the long-time waiting for the solidification of the binder is not needed, the overall assembly efficiency of the infusion pump is improved, and the worry about the occurrence of defective products is avoided.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an infusion pump, a working method of the infusion pump, an infusion joint and an indwelling needle with the infusion joint.
Background
The existing infusion pump structure has the condition that the manufacturing process complexity and the assembling process complexity of the liquid storage bag are contradictory, the design with simple structure of the liquid storage bag possibly needs a binder when the infusion pump and the supporting tube are assembled, the liquid storage bag and the supporting tube are firmly bonded for a certain time, and the liquid storage bag and the supporting tube are not easy to position due to the lubrication of the binder when the infusion pump and the supporting tube are assembled, so that the shaping time after the assembly is further increased, the manual bonding process possibly causes defective products of the assembled products, and finally, the assembling process of the liquid storage bag has high cost, lower production efficiency and low quality reliability.
Disclosure of Invention
The invention solves the problems that the liquid storage bag in the existing infusion pump of the remaining needle needs the adhesive for assembly, the process cost is higher, the production efficiency is lower, and the quality reliability is low.
In order to solve the technical problem, the technical scheme of the invention provides an infusion pump, which comprises an inlet shell, a liquid storage shell and an outlet shell which are detachably mounted in turn, wherein,
a liquid storage bag, a supporting tube and a micro-flow component are arranged in the liquid storage shell, the liquid storage bag is a stepped shaft pipe fitting with flange structures at two ends and elastic tensile properties, the supporting tube is a stepped shaft pipe fitting with the same structure as the liquid storage bag and smaller than the liquid storage bag in size, and the axial length of the liquid storage bag is smaller than that of the supporting tube;
the microfluidic assembly is inserted into the support tube, the support tube is inserted into the reservoir and the reservoir is mounted in the reservoir housing by being stretched in the axial direction;
the liquid medicine flows into the liquid storage bag in the liquid storage shell through the inlet shell and is converted into slow continuous positive pressure microflow through the microflow assembly to flow to the outlet shell.
Optionally, a clamping ring and a dosing rubber plug are mounted between the inlet shell and the liquid storage shell, the clamping ring is provided with a clamping ring protrusion, the central position of the clamping ring protrusion is axially hollow and communicated with the liquid storage shell to form a clamping ring liquid injection port, two ends of the dosing rubber plug are respectively clamped with the clamping ring and the inlet shell, and the clamping ring protrusion is inserted into the liquid storage bag and the support tube at the same end of the liquid storage bag;
the outlet shell and the liquid storage shell are detachably mounted, and the liquid storage bag, the supporting tube and the microfluidic assembly are fixed in the liquid storage shell;
the liquid storage shell is provided with a positioning counter bore, the outlet shell is provided with a positioning boss, the small end of the liquid storage bag is inserted into the positioning counter bore, and the large end of the liquid storage bag is axially contacted with the positioning counter bore; the small end of the supporting tube is inserted into the small end of the liquid storage bag, and the large end of the supporting tube is axially contacted with the large end of the liquid storage bag; the positioning boss is inserted into the large end of the supporting tube, and the large end of the liquid storage bag and the large end of the supporting tube are axially fixed by the positioning boss and the positioning counter bore.
Optionally, a limiting inner boss with a supporting tube through hole is arranged in the supporting tube, and the limiting inner boss has an inner side surface facing the outlet shell direction and an outer side surface facing the inlet shell direction;
the outlet shell is provided with an interface provided with a communication hole which is axially communicated, and an interface inner boss is arranged in the interface at a position close to the liquid storage shell;
the interface inner boss is provided with a first filtering membrane and a first hollow fixing piece in the direction towards the liquid storage shell, the microfluidic component is inserted into the supporting tube, one end of the microfluidic component is in contact with the inner side surface, and the other end of the microfluidic component is inserted into a communicating hole in the interface of the outlet shell;
the outer side face of the limiting inner boss is provided with a second filtering membrane, a second hollow fixing piece is installed at the position, close to the second filtering membrane, inside the supporting tube, and the second filtering membrane is in close contact with the outer side face through the second hollow fixing piece.
Optionally, at least one through circulation hole is formed in the surface of the support tube, the circulation hole is arranged on the surface of the support tube and is located at a position close to the inlet shell and far away from the limiting inner boss, and a liquid storage bag cavity is defined by a space between the surface of the support tube and the inner wall of the liquid storage bag;
two ends of the microfluidic assembly are respectively opposite to the communicating hole of the interface and the through hole of the limiting inner boss, and the protrusion of the clamping ring is opposite to the through hole of the limiting inner boss;
the medicine adding rubber plug is hollow inside, and a cutting seam is formed in the position facing the direction of the inlet shell;
the communicating hole of the connector, the micro-flow assembly, the through hole of the limiting inner boss, the collar protrusion, the dosing rubber plug and the space between the cutting seams are communicated.
Optionally, the microfluidic assembly includes a microporous tube having a through hole, and a micro-wire disposed in the through hole of the microporous tube, wherein a through gap is formed between the micro-wire and a wall of the microporous tube.
In order to solve the technical problem, the technical solution of the present invention further provides a working method of an infusion pump, wherein the working method comprises the following steps:
when the injector inserts and extrudes the dosing rubber plug from the inlet shell to open the cutting seam of the dosing rubber plug, the liquid medicine flows into the liquid storage bag cavity of the liquid storage bag from the rubber plug inner cavity of the dosing rubber plug, the clamping ring liquid injection port, the inlet cavity and the circulation hole and reaches a filling state; when the medicine adding rubber plug is pulled out of the injector, the cutting seam is recovered and sealed, the liquid storage bag cavity of the liquid storage bag (in the filling state) generates inward contraction force due to the fact that the volume of the liquid storage bag cavity expands and becomes large after the liquid medicine is injected, the contraction force enables the liquid medicine in the liquid storage bag cavity of the liquid storage bag (in the filling state) to flow out from the left side outlet end of the communicating hole of the connector through the circulating hole, the inlet cavity, the second filtering film, the through hole of the microporous tube and the first filtering film, and therefore the slow continuous outflow of the liquid medicine is.
In order to solve the technical problem, the invention further provides an infusion connector, which comprises an infusion connector main body and an infusion pump detachably mounted with the infusion connector main body, wherein the infusion pump is any one of the infusion pumps.
In order to solve the technical problem, the invention further provides an indwelling needle comprising the infusion joint, wherein the indwelling needle comprises an infusion tube connected with the infusion joint and a needle tube assembly connected with the infusion tube.
The technical scheme of the invention has the beneficial effects that:
according to the infusion pump, the liquid storage bag is of the two-end flange structure, so that the liquid storage bag can be completely installed through physical connection, the use of a binder is avoided, the installation can be rapidly completed, the long-time waiting for the solidification of the binder is not needed, the overall assembly efficiency of the infusion pump is improved, and the worry about the occurrence of defective products is avoided.
Drawings
FIG. 1 is a schematic diagram of the infusion pump of the present invention;
FIG. 2 is a cross-sectional view of the infusion pump of the present invention;
FIG. 3 is an exploded view of a reservoir housing according to the present invention;
FIG. 4 is a cross-sectional view of a reservoir housing of the present invention;
FIG. 5 is a schematic view of a plurality of structures of a reservoir of the present invention;
FIG. 6 is a schematic view of an infusion connector to which the infusion pump of FIG. 1 is applied;
FIG. 7 is a view showing an indwelling needle having the infusion connector of FIG. 6 applied thereto;
fig. 8 is a schematic view of an infusion pump with a one-way valve structure according to the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1 and 2, an infusion pump 100 of an embodiment is shown, which comprises an inlet housing 1, a liquid storage housing 2 and an outlet housing 3, which are detachably mounted in sequence, wherein, as shown in fig. 3 and 4, a liquid storage bag 4, a support tube 5 and a microfluidic assembly 300 are mounted in the liquid storage housing 2, the liquid storage bag 4 is a stepped shaft pipe member with elastic stretching property and flange structure at two ends (as shown in fig. 5, the liquid storage bag 4 has at least A, B, C, D four hollow through stepped shaft pipe member structures, a large end with a large diameter and a small end with a small diameter, the large end has a shaft shoulder, as shown in fig. 5C, an annular groove is provided at the inner side to facilitate fixing with the liquid storage housing 2, or the annular groove 403 can be directly compressed and fixed through the axial physical connection of the outlet housing 3 and the liquid storage housing 2 without being provided, as shown in fig. 5B, the small end can be provided with an annular groove 402 at the inner part of the, be convenient for and the open position location of stay tube 5 fixed), stay tube 5 is the structure and is less than the ladder shaft pipe fitting of reservoir with reservoir 4 the same and size, the axial length of reservoir is less than the axial length of stay tube (as shown in fig. 3, the length of stay tube 5 is greater than reservoir 4, as shown in fig. 4, stay tube 5 inserts in reservoir 4 and stretches reservoir 4 and be fixed in reservoir shell 2 with reservoir 4 in the axial direction), microflow subassembly 300 inserts in the stay tube 5, the liquid medicine flows into in the reservoir 4 in the reservoir shell 2 via import shell 1, and convert into the continuous malleation microflow of slowness through microflow subassembly 300 and flow to export shell 3.
In the embodiment, a clamping ring 7 and a medicine adding rubber plug 8 are arranged between an inlet shell 1 and a liquid storage shell 2, the clamping ring 7 is provided with a clamping ring protrusion 702, the central position of the clamping ring protrusion 702 is axially communicated and is provided with a clamping ring liquid injection port 701, two ends of the medicine adding rubber plug 8 are respectively clamped with the clamping ring 7 and the inlet shell 1, and the clamping ring protrusion 702 is inserted into a liquid storage bag 4 and a support pipe 5 positioned at the same end of the liquid storage bag 4; the outlet housing 3 is detachably mounted with the reservoir housing 2 and fixes the reservoir 4, the support tube 5 and the microfluidic assembly 300 in the reservoir housing 2; the liquid storage shell 2 is provided with a positioning counter bore 202, the outlet shell 3 is provided with a positioning boss 303, the small end of the liquid storage bag 4 is inserted into the positioning counter bore 202, and the large end of the liquid storage bag 4 is axially contacted with the positioning counter bore 202; the small end of the supporting tube 5 is inserted into the small end of the liquid storage bag 4, and the large end of the supporting tube 5 is axially contacted with the large end of the liquid storage bag 4; the positioning boss 303 is inserted into the large end of the support tube 5, and the positioning boss 303 and the positioning counter bore 202 axially fix the large end of the reservoir 4 and the large end of the support tube 5.
In this embodiment, a limit inner boss 504 having a support tube through hole 502 is provided in the support tube 5, and the limit inner boss 504 has an inner side surface 5041 facing the outlet casing 3 direction and an outer side surface 5042 facing the inlet casing 1 direction; the outlet shell 3 is provided with a port 301 provided with a communication hole 3011 which is axially communicated, and a port inner boss 302 is arranged at the position close to the liquid storage shell 2 in the port 301; the interface inner boss 302 is provided with a first filtering membrane 1002 towards the direction of the liquid storage shell 2, the microfluidic component 300 is inserted into the support tube 5 and is sealed and fixed through an adhesive, one end of the microfluidic component 300 is contacted with the inner side surface 5041, the other end of the microfluidic component 300 is inserted into a communication hole 3011 in the interface 301 of the outlet shell 3, and a first hollow fixing piece 902 is arranged between the first filtering membrane 1002 and the microfluidic component 300; the outer side surface 5042 of the limiting inner boss 504 is provided with a second filtering membrane 1001, a second hollow fixing piece 901 is installed at a position close to the second filtering membrane 1001 in the supporting tube 5, and the second filtering membrane 1001 is tightly contacted with the outer side surface 5042 through the second hollow fixing piece 901.
In this embodiment, as shown in fig. 2 and 3, at least one through flow hole 501 is formed in the surface of the support tube 5, the position of the flow hole 501 is arranged on the surface of the support tube 5 and is located at a position close to the direction of the inlet housing 1 and far away from the position-limiting inner boss 504, an inlet cavity 503 is defined by a space from the position-limiting inner boss 504 to the opening of the support tube 5, and a liquid storage bag cavity 401 is defined by a space between the surface of the support tube 5 and the inner wall of the liquid storage bag 4; two ends of the microfluidic assembly 300 are respectively opposite to the communicating hole 3011 of the interface 301 and the through hole 502 of the limiting inner boss 504, and the collar protrusion 702 is opposite to the through hole 502 of the limiting inner boss 504; the medicine adding rubber plug 8 is hollow and is provided with a rubber plug inner cavity 802, and a cutting seam 801 is arranged at the position facing the direction of the inlet shell 1; the communication hole 3011 of the interface 301, the microfluidic assembly 300, the through hole 502 of the limit inner boss 504, the inlet cavity 503, the collar liquid injection port 701 of the collar protrusion 702, the dosing rubber plug 8 and the space between the cutting slits 801 are communicated.
In this embodiment, the microfluidic assembly 300 includes a microporous tube 6 having a through hole 601, and a microwire 11 disposed in the through hole 601 of the microporous tube 6, and a through gap is formed between the microwire 11 and a wall of the microporous tube 6.
The operating principle of the infusion pump 100 of the present embodiment is as follows:
when the injector is inserted into the inlet shell 1 to extrude the medicine adding rubber plug 8, the cutting seam 801 of the medicine adding rubber plug 8 is opened, and the liquid medicine flows into the liquid storage bag cavity 401 of the liquid storage bag 4 from the rubber plug inner cavity 802-the collar injection port 701-the inlet cavity 503-the flow hole 501 of the medicine adding rubber plug 8 and reaches the filling state (as shown in fig. 2); when the medicine adding rubber plug 8 is pulled out from the injector, the cutting seam 801 is restored and sealed, at this time, the liquid storage bag cavity 401 of the liquid storage bag 4 (in the filling state) generates inward contraction force due to the volume expansion and enlargement after the liquid medicine is injected, and the contraction force enables the liquid medicine in the liquid storage bag cavity 401 of the liquid storage bag 4 (in the filling state) to flow out from the left outlet end of the communication hole 3011 of the connector 301 through the circulation hole 501, the inlet cavity 503, the second filtering membrane 1001, the through hole 502, the through hole 601 of the microporous tube 6 and the first filtering membrane 1002, so that the slow and continuous outflow of the liquid medicine is realized.
As shown in fig. 8, in the present embodiment, there is also provided an infusion pump 100 with a one-way valve, the infusion pump 100 also includes an inlet housing 1, a liquid storage housing 2 and an outlet housing 3, which are sequentially installed, but a one-way valve is installed at the connection position of the liquid storage housing 2 and the outlet housing 3, the one-way valve includes a one-way valve smooth surface member 12, a one-way valve elastic sheet 13 and an elastic sheet limiting member 14, the one-way valve smooth surface member 12 is clamped at the position of the communication hole 3011 near the liquid storage housing 2, the one-way valve elastic sheet 13 is concave, the elastic sheet limiting member 14 abuts against the one-way valve elastic sheet 13, the one-way valve elastic sheet 13 is concave towards the direction of the liquid storage housing 2, so that the liquid medicine can only flow towards the one-way valve from the position where the one-way valve elastic sheet 13 contacts with the one-way valve smooth surface member 12 towards the outlet housing 3 without flowing back into the microporous tube, in addition, in other embodiments, the elastic limiting member 14 may be integrally provided with the outlet housing 3.
The features and functions of the present invention will be further appreciated from the following description,
as shown in fig. 6, the present embodiment further provides an infusion connector 200, which includes an infusion connector main body 400 and an infusion pump 100 detachably mounted thereon, wherein the infusion pump is an infusion pump of any one of the above, and the infusion connector main body 400 includes a male luer 405 and a female luer 404. The working principle of the infusion connector is the prior art and is not described in detail herein.
As shown in fig. 7, the present embodiment further provides an indwelling needle including the infusion joint as described above, including an infusion tube 9 connected to the infusion joint 200 and a needle tube assembly 10 connected to the infusion tube 9. The working principle of the indwelling needle is the prior art and is not described in detail herein.
The working principle of the circulation of the medicine in the infusion joint and the indwelling needle can be understood by those skilled in the art through understanding the working principle of the infusion pump and the same principle, and the details are not described herein.
In conclusion, the infusion pump has the advantages that the liquid storage bag is arranged into the structure with the flanges at the two ends, so that the liquid storage bag can be completely installed through physical connection, the use of a bonding agent is omitted, meanwhile, the installation can be rapidly completed, the long-time waiting for the curing of the bonding agent is not needed, the overall assembly efficiency of the infusion pump is improved, and the worry about the occurrence of defective products is avoided.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. An infusion pump comprises an inlet shell, a liquid storage shell and an outlet shell which are detachably arranged in sequence, and is characterized in that,
a liquid storage bag, a supporting tube and a micro-flow component are arranged in the liquid storage shell, the liquid storage bag is a stepped shaft pipe fitting with flange structures at two ends and elastic tensile properties, the supporting tube is a stepped shaft pipe fitting with the same structure as the liquid storage bag and smaller than the liquid storage bag in size, and the axial length of the liquid storage bag is smaller than that of the supporting tube;
the microfluidic assembly is inserted into the support tube, the support tube is inserted into the reservoir and the reservoir is mounted in the reservoir housing by being stretched in the axial direction;
the liquid medicine flows into the liquid storage bag in the liquid storage shell through the inlet shell and is converted into slow continuous positive pressure microflow through the microflow assembly to flow to the outlet shell.
2. The infusion pump of claim 1,
a clamping ring and a dosing rubber plug are arranged between the inlet shell and the liquid storage shell, the clamping ring is provided with a clamping ring protrusion, the central position of the clamping ring protrusion is axially hollow and communicated with the liquid storage shell to form a clamping ring liquid injection port, two ends of the dosing rubber plug are respectively clamped with the clamping ring and the inlet shell, and the clamping ring protrusion is inserted into the liquid storage bag and the supporting tube at the same end of the liquid storage bag;
the outlet shell and the liquid storage shell are detachably mounted, and the liquid storage bag, the supporting tube and the microfluidic assembly are fixed in the liquid storage shell;
the liquid storage shell is provided with a positioning counter bore, the outlet shell is provided with a positioning boss, the small end of the liquid storage bag is inserted into the positioning counter bore, and the large end of the liquid storage bag is axially contacted with the positioning counter bore; the small end of the supporting tube is inserted into the small end of the liquid storage bag, and the large end of the supporting tube is axially contacted with the large end of the liquid storage bag; the positioning boss is inserted into the large end of the supporting tube, and the large end of the liquid storage bag and the large end of the supporting tube are axially fixed by the positioning boss and the positioning counter bore.
3. The infusion pump of claim 2,
a limiting inner boss with a supporting tube through hole is arranged in the supporting tube, and the limiting inner boss is provided with an inner side face facing the outlet shell direction and an outer side face facing the inlet shell direction;
the outlet shell is provided with an interface provided with a communication hole which is axially communicated, and an interface inner boss is arranged in the interface at a position close to the liquid storage shell;
the interface inner boss is provided with a first filtering membrane and a first hollow fixing piece in the direction towards the liquid storage shell, the microfluidic component is inserted into the supporting tube, one end of the microfluidic component is in contact with the inner side surface, and the other end of the microfluidic component is inserted into a communicating hole in the interface of the outlet shell;
the outer side face of the limiting inner boss is provided with a second filtering membrane, a second hollow fixing piece is installed at the position, close to the second filtering membrane, inside the supporting tube, and the second filtering membrane is in close contact with the outer side face through the second hollow fixing piece.
4. The infusion pump of claim 3,
the surface of the supporting tube is provided with at least one through circulation hole, the position of the circulation hole is arranged on the surface of the supporting tube and is positioned at a position close to the direction of the inlet shell and far away from the limiting inner boss, and a liquid storage bag cavity is defined by the space between the surface of the supporting tube and the inner wall of the liquid storage bag;
two ends of the microfluidic assembly are respectively opposite to the communicating hole of the interface and the through hole of the limiting inner boss, and the protrusion of the clamping ring is opposite to the through hole of the limiting inner boss;
the medicine adding rubber plug is hollow inside, and a cutting seam is formed in the position facing the direction of the inlet shell;
the communicating hole of the connector, the micro-flow assembly, the through hole of the limiting inner boss, the collar protrusion, the dosing rubber plug and the space between the cutting seams are communicated.
5. The infusion pump according to claim 4, wherein the microfluidic assembly comprises a microporous tube having a through-hole and a micro-wire disposed within the through-hole of the microporous tube, the micro-wire forming a through-gap with a wall of the microporous tube.
6. A method of operating an infusion pump, the method comprising:
when the injector inserts and extrudes the dosing rubber plug from the inlet shell to open the cutting seam of the dosing rubber plug, the liquid medicine flows into the liquid storage bag cavity of the liquid storage bag from the rubber plug inner cavity of the dosing rubber plug, the clamping ring liquid injection port, the inlet cavity and the circulation hole and reaches a filling state; when the medicine adding rubber plug is pulled out of the injector, the cutting seam is recovered and sealed, the liquid storage bag cavity of the liquid storage bag (in the filling state) generates inward contraction force due to the fact that the volume of the liquid storage bag cavity expands and becomes large after the liquid medicine is injected, the contraction force enables the liquid medicine in the liquid storage bag cavity of the liquid storage bag (in the filling state) to flow out from the left side outlet end of the communicating hole of the connector through the circulating hole, the inlet cavity, the second filtering film, the through hole of the microporous tube and the first filtering film, and therefore the slow continuous outflow of the liquid medicine is.
7. An infusion connector, characterized by comprising an infusion connector body and an infusion pump detachably mounted with the infusion connector body, wherein the infusion pump is the infusion pump of any one of claims 1-5.
8. An indwelling needle comprising an infusion connector as in claim 7, comprising an infusion tube connected to the infusion connector and a needle tubing assembly connected to the infusion tube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359804.0A CN113082363A (en) | 2021-04-02 | 2021-04-02 | Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector |
| PCT/CN2022/078963 WO2022206274A1 (en) | 2021-04-02 | 2022-03-03 | Infusion pump and working method therefor, infusion connector, and indwelling needle having infusion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359804.0A CN113082363A (en) | 2021-04-02 | 2021-04-02 | Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector |
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| Publication Number | Publication Date |
|---|---|
| CN113082363A true CN113082363A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110359804.0A Pending CN113082363A (en) | 2021-04-02 | 2021-04-02 | Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector |
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| CN (1) | CN113082363A (en) |
| WO (1) | WO2022206274A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206274A1 (en) * | 2021-04-02 | 2022-10-06 | 上海希耳医疗器械有限公司 | Infusion pump and working method therefor, infusion connector, and indwelling needle having infusion connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5263935A (en) * | 1986-11-26 | 1993-11-23 | Baxter International Inc. | Pressurized fluid dispenser |
| CN106031805A (en) * | 2015-03-11 | 2016-10-19 | 李荣辉 | An elastic infusion device and a method for manufacturing the same |
| CN104740715A (en) * | 2015-04-21 | 2015-07-01 | 上海康德莱企业发展集团医疗器械有限公司 | Disposable conveying infusion pump |
| CN107670145B (en) * | 2016-08-01 | 2021-09-14 | 北京唐颐惠康生物医学技术有限公司 | Infusion pump and infusion method special for stem cells |
| CN113082363A (en) * | 2021-04-02 | 2021-07-09 | 上海希耳医疗器械有限公司 | Infusion pump, working method thereof, infusion connector and indwelling needle with infusion connector |
| CN215023981U (en) * | 2021-04-02 | 2021-12-07 | 上海希耳医疗器械有限公司 | Non-clip anti-needling remaining needle |
| CN215938581U (en) * | 2021-04-02 | 2022-03-04 | 上海希耳医疗器械有限公司 | Infusion pump, infusion connector and indwelling needle with infusion connector |
-
2021
- 2021-04-02 CN CN202110359804.0A patent/CN113082363A/en active Pending
-
2022
- 2022-03-03 WO PCT/CN2022/078963 patent/WO2022206274A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206274A1 (en) * | 2021-04-02 | 2022-10-06 | 上海希耳医疗器械有限公司 | Infusion pump and working method therefor, infusion connector, and indwelling needle having infusion connector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022206274A1 (en) | 2022-10-06 |
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