CN113521444B - Continuous infusion apparatus with acupuncture type sequential channel switching - Google Patents
Continuous infusion apparatus with acupuncture type sequential channel switching Download PDFInfo
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- CN113521444B CN113521444B CN202110800856.7A CN202110800856A CN113521444B CN 113521444 B CN113521444 B CN 113521444B CN 202110800856 A CN202110800856 A CN 202110800856A CN 113521444 B CN113521444 B CN 113521444B
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- infusion
- channel
- acupuncture
- water outlet
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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
- A61M5/168—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
- A61M5/16827—Flow controllers controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths
-
- 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
- A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
Abstract
The invention relates to a continuous infusion apparatus with magnetic suction type sequential channel switching, wherein a downstream path sequentially comprises a bottle stopper puncture part, an automatic channel switching device, a dropping funnel and an infusion needle, wherein the automatic channel switching device is provided with a water outlet pipe and a plurality of cylindrical infusion channels, and the water outlet pipe is communicated with the dropping funnel. The continuous infusion apparatus realizes sequential switching of infusion channels according to priority during infusion through the action of buoyancy, gravity and magnetic force. The continuous infusion apparatus can realize sequential switching of the infusion channels according to the priority level during infusion, and after the infusion of the liquid medicine corresponding to the current infusion channel is finished, the acupuncture component punctures the isolation film under the action of gravity and magnetic force to automatically start the infusion of the liquid medicine corresponding to the infusion channel with the next priority level until the infusion of the liquid medicine corresponding to the infusion channel with the lowest priority level is finished. In one embodiment of the invention, due to the suspension disconnecting structure, the isolation film can be prevented from being accidentally punctured in transportation under the condition of realizing the function.
Description
Technical Field
The present invention relates to intravenous infusion devices, and more particularly, to a continuous infusion set with sequentially switched channels in a needle-prick manner.
Background
The intravenous infusion apparatus is a common apparatus in clinical treatment, and the basic structure comprises a bottle stopper puncture outfit, an air inlet/outlet device, a dropping funnel, a liquid medicine filter and an infusion needle, which are connected in sequence through a hose to form a liquid medicine circulating pipeline for inputting the liquid medicine into the vein of a patient. In many cases, a patient is required to continuously infuse a plurality of medical fluids which cannot be mixed and which need to be infused in a sequence. This just needs the nursing staff to continue to monitor the liquid medicine infusion progress, and in time the change liquid medicine is wasted time and energy, still leads to medical malpractice easily.
To solve this problem, researchers have developed intravenous sets that can automatically infuse medical fluids in a sequential order. CN107224632B discloses a continuous infusion apparatus, which is provided with a pressure lever, a bottom plate with a notch, a slot and other limiting mechanisms to realize that one of a plurality of connected liquid medicine containers is in an infusion state, and the liquid medicine container for infusion is switched by a pressure sensor and a motor-driven limiting mechanism. However, the structure of the infusion apparatus is too complex, the cost is increased, and the infusion apparatus is not suitable for being used as a disposable medical instrument.
CN1091016996B discloses an infusion apparatus capable of automatically switching the order of infusion channels, which comprises a float with a slide valve to block the outlet of the infusion sub-channel with low priority, and a corresponding vent hole on the float to achieve air pressure equalization and prevent the infusion pipeline from forming an air column. However, the device still has difficult factors to control, for example, when the infusion of the high-priority infusion branch is completed, the liquid level in the controller rapidly drops, the float moves downwards too fast, two or more low-priority infusion branches are opened at a time, two or more liquid medicines are mixed in the pipeline and infused into the vein of a patient, and unpredictable results are caused.
We have designed a continuous transfusion device with acupuncture type sequential channel switching, which achieves better effect. However, the continuous infusion set has a certain complexity in structure, and some instability still exists in use. Therefore, a new automatic multi-fluid infusion device is needed.
Disclosure of Invention
In order to solve the problems, the invention provides a continuous infusion apparatus with magnetic suction type sequential channel switching, wherein a downstream path sequentially comprises a bottle stopper puncture part, an automatic channel switching device, a dropping funnel and an infusion needle, wherein the automatic channel switching device is provided with a water outlet pipe and a plurality of cylindrical infusion channels, and the water outlet pipe is communicated with the dropping funnel;
the plurality of infusion channels respectively have different priorities according to infusion sequence, the bottom water outlet of the infusion channel with the highest priority is communicated with the water outlet pipe, and the bottom water outlets of the infusion channels with the adjacent priorities are connected by a communication isolation assembly;
the acupuncture components are arranged in the infusion channels except for the lowest priority, the density of the acupuncture components is smaller than that of water, the acupuncture components comprise floats and acupuncture needles connected to the centers of the bottoms of the floats, the floats are in a round cake shape, annular iron sheets are arranged at the bottoms of the floats, annular magnets corresponding to the annular iron sheets are arranged at the bottoms of the infusion channels, and when the floats are close to the bottoms of the infusion channels, the acupuncture components are pulled down under the action of magnetic force between the annular magnets and the annular iron sheets, so that the isolation and communication components are changed into a communication state from an isolation state;
the bottle stopper puncture part is provided with bottle stopper puncture devices with the number corresponding to that of the infusion channels, and the top of each infusion channel is communicated with the corresponding bottle stopper puncture device. In a specific embodiment, the isolated subassembly of intercommunication includes tee bend and connecting pipe, tee bend apical orifice with infusion passageway's bottom delivery port is connected, and other mouth passes through the connecting pipe with the end mouth of the tee bend that the infusion passageway of last priority corresponds is connected, and the end mouth passes through the connecting pipe is connected with the other mouth of the tee bend that next level infusion passageway corresponds, be provided with the intercommunication between the isolated adjacent priority's of infusion passageway's of isolated film bottom delivery port in the tee bend, isolated film set up in the top of tee bend end mouth, be less than the position of the other mouth of tee bend, the other mouth of the tee bend that the infusion passageway of highest priority corresponds directly with go out water piping connection.
In a specific embodiment, the bottom of the infusion channel is provided with a supporting spring, the annular magnet is detachable, the annular magnet is in a dislocation state before use, and the annular magnet is arranged at the bottom of the infusion channel after liquid medicine enters the infusion channel in use.
Preferably, the bottom of the infusion channel is provided with a clamping groove for mounting the annular magnet.
Through setting up magnetic force part, increased the felting needle and stabbed the dynamics of isolated film, ensured that when the liquid medicine of this priority was infused and is accomplished, the felting needle can stab isolated film, begins the infusion of the liquid medicine of next priority. By providing the support spring and the detachable magnet, the magnet can be detached before transportation and use, preventing the isolation film from being accidentally punctured by the puncture needle. After the lancing assembly floats, the magnet is installed so that the lancing assembly can be pulled down by magnetic force when the infusion is completed, thereby allowing the lancet to touch the insulating film and increasing the lancing strength to facilitate the lancing of the insulating film.
In another specific embodiment, the continuous infusion apparatus is provided with a hanging part in an infusion channel of the acupuncture component, the hanging part is positioned above the acupuncture component, and the top of the acupuncture component is provided with a hanging clamping sleeve part which forms a detachable structure with the hanging part.
In a specific embodiment, the hanging part is provided with a hanging rod which is positioned on the central axis of the infusion channel, the bottom of the hanging rod is symmetrically coupled with a pair of supporting rods, the bottom of the supporting rod is coupled with the hanging rod, the top of the supporting rod is a free end, and a connecting spring is arranged between the top end of the supporting rod and the hanging rod, so that the pair of supporting rods form a compressible V shape;
the needle-puncturing assembly is hung on the supporting rod of the hanging part through the annular rib of the clamping sleeve part;
the clamping sleeve part is internally provided with a restraining sleeve, the restraining sleeve can be sleeved on the bottom of the hanging rod when moving upwards along with the acupuncture component, and the pair of supporting rods are compressed, so that the distance between the top ends of the V-shaped shapes formed by the pair of supporting rods is smaller than the inner diameter of the annular flange.
In a specific embodiment, a support ring is arranged at the bottom of the suspension rod and is positioned below the support rod, and a limiting device is arranged inside the constraint sleeve, so that the constraint sleeve is supported on the support ring.
In a specific embodiment, the limiting device is a pair of spring pieces which are symmetrically arranged, one end of each spring piece is fixed on the inner wall of the restraint sleeve, the other end of each spring piece obliquely extends downwards, and the distance between the extending ends of the spring pieces is smaller than the outer diameter of the support ring.
Through above-mentioned setting, can ensure that the subassembly that pricks keeps the suspended state before using, prevent that the subassembly that pricks accidentally from pricking isolated film. When the liquid medicine is injected into and filled in the infusion channel, the restraint sleeve moves upwards along with the whole acupuncture component and is sleeved on the suspension rod, the support rod is compressed, the V-shaped formed by the support rod is in a folded state, when the liquid medicine infusion is about to be completed, the acupuncture component descends along with the liquid level, at the moment, as the distance between the top ends of the V-shaped formed by the support rod is smaller than the inner diameter of the annular flange, the clamping sleeve part is separated from the suspension part, the acupuncture component continues to descend, and the isolation film is punctured under the dual effects of magnetic force and gravity, so that the liquid medicine infusion of the next priority is started.
In a particular embodiment, the outer diameter of the constraining sheath and the inner diameter of the snap-fit portion cooperate such that the constraining sheath does not move laterally relative to each other, but does not affect the longitudinal relative movement between the constraining sheath and the snap-fit portion.
The continuous infusion apparatus can realize sequential switching of the infusion channels according to the priority level during infusion, and after the infusion of the liquid medicine corresponding to the current infusion channel is finished, the acupuncture component punctures the isolation film under the action of gravity and magnetic force to automatically start the infusion of the liquid medicine corresponding to the infusion channel with the next priority level until the infusion of the liquid medicine corresponding to the infusion channel with the lowest priority level is finished. In one embodiment of the invention, due to the suspension disconnecting structure, the isolation film can be prevented from being accidentally punctured in transportation under the condition of realizing the function.
Drawings
Fig. 1 is a schematic view of a continuous infusion set of embodiment 1;
fig. 2 is a schematic view of an automatic channel switching device of the continuous infusion set according to embodiment 1;
fig. 3 is a schematic view of the components inside the automatic channel switching device of the continuous infusion set of embodiment 1;
FIG. 4 is a schematic view of an infusion path, a tee and a lancing assembly of the continuous infusion set of embodiment 1;
FIG. 5 is a schematic view of the inversion of the infusion path, tee and spike assembly of the continuous infusion set of embodiment 1;
FIG. 6 is a schematic view of an infusion path, a tee and a lancing assembly of the continuous infusion set of embodiment 2;
fig. 7 is a schematic structural view of the hanging part and the clamping sleeve part of the continuous infusion set in the original state in embodiment 2;
FIG. 8 is a schematic structural view of the hanging portion and the clamping sleeve portion of the continuous infusion set of embodiment 2 after the infusion path is filled with the liquid medicine;
fig. 9 is a schematic structural view of the suspending portion and the ferrule portion of the continuous infusion set of embodiment 2 after the liquid level in the infusion path is lowered.
In the drawings, reference numerals designate the following components: 1. a bottle stopper puncturing part 11, a first bottle stopper puncturing device 12, a second bottle stopper puncturing device 2, a channel automatic switching device 211, a first transfusion channel 2111, a supporting spring 2112, a clamping groove 212, a second transfusion channel 221, a first medicine liquid inlet 222, a second medicine liquid inlet 23, a water outlet pipe 24, a shell 25, a communication isolation component 251, a three-way component 2511, an isolation film 252, a connecting pipe 26, a needling component 261, a floater 2611, an annular iron sheet 2612, a water through hole 262, a pricking needle 263, a clamping sleeve 2631, a restraining sleeve 26311, a spring sheet 27, an annular magnet 28, a hanging part 281, a hanging rod 282, a supporting rod 283, a connecting spring 284, an annular supporting part 3, a dropping funnel 4 and a transfusion needle.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-4, the forward flow path of the continuous infusion apparatus of this embodiment includes a bottle stopper puncturing part 1, an automatic channel switching device 2, a dropping funnel 3 and an infusion needle 4 in sequence.
The bottle stopper puncturing part 1 comprises a first bottle stopper puncturing device 11 and a second bottle stopper puncturing device 12, the channel automatic switching device 2 comprises a water outlet pipe 23, a first transfusion channel 211 and a second transfusion channel 212, and the water outlet pipe 23 is communicated with the dropping funnel 3.
The first and second infusion passages 211 and 212 are provided at the top thereof with first and second medical fluid inlets 221 and 222, respectively, and communicate with the corresponding stopper piercers through the corresponding medical fluid inlets.
The first transfusion channel 211 and the second transfusion channel 212 are connected through a communication isolation assembly 25. The communication isolation assembly 25 includes a tee 251 having an isolation membrane 2511 disposed therein, and a connection pipe 252. Wherein, the top port of the coaxial section of the tee fitting 251 is connected with the bottom water outlet of the first infusion channel 211, the bottom port is communicated with the bottom water outlet of the second infusion channel 212 through the connecting pipe 252, the side port is connected with the water outlet pipe 23, and the coaxial section is provided with an isolation film 2511 which is positioned below the side port and isolates the communication between the upper side of the isolation film and the second infusion channel 212. The inner diameter of the transfusion channel is larger than that of the water outlet at the bottom. The inner diameter of the bottom outlet is the same as the inner diameter of the connecting tube, generally about 2-3 mm, and the inner diameter of the infusion channel can be set to 5-8 mm.
The first transfusion channel 21 is provided with a needle assembly 26, the needle assembly 26 comprises a floater 261 and a needle 262, the floater 261 is in a pie shape with the diameter same as the inner diameter of the transfusion channel, and the needle 262 is arranged at the bottom center of the floater 261. The bottom of the infusion path 21 is provided with a support spring 2111, and when the float 261 is positioned at the bottom of the infusion path 211, the lancet 262 cannot touch the insulating film 251 because of the support spring 2111.
The lower surface of the bottom of the infusion channel 211 is provided with a ring-shaped clamping groove 2112 for mounting the ring-shaped magnet 27. The annular iron sheet 2611 is arranged on the bottom surface of the float 261, the annular iron sheet 2611 is matched with the position of the annular magnet 27, when the float 261 approaches the bottom of the infusion channel 21, the magnetic attraction force of the annular magnet 27 is received, the supporting spring 2111 is compressed, and the downward movement is continued, so that the position of the puncture needle 262 can be pulled down, the force of the puncture needle 262 for puncturing the isolation film 2511 is improved, and the puncture needle 262 is ensured to puncture the isolation film 2511.
When in use, the infusion set is firstly installed, so that the infusion channel is in a vertical direction. The stopper piercer is inserted into the corresponding medical fluid container, medical fluid enters the infusion channel, the spike assembly 26 in the first infusion channel 2112 floats up, and the ring magnet 27 is mounted in the ring slot 212. When the liquid medicine is about to be infused, the liquid level in the first infusion channel 211 gradually drops, the floater 261 of the acupuncture assembly drops to the supporting spring 2111, the acupuncture assembly 26 continues to move downwards due to the interaction of the annular iron sheet 2611 and the annular magnet 28, the acupuncture needle 262 punctures the isolation film 251, and the puncturing force of the acupuncture needle 262 is increased due to the magnetic attraction force of the annular magnet 28, so that the isolation film is conveniently punctured.
After the puncture needle 262 punctures the isolation film 2511, the second infusion channel 212 communicates with the outlet pipe 23, and infusion of the second medical fluid is started.
Preferably, before use, the ring magnet 27 is sleeved on the junction of the tee 251 and the bottom water outlet of the first infusion channel.
In a preferred embodiment, as shown in fig. 5, the float 261 is symmetrically provided with a plurality of through-holes 2612 so that the liquid medicine travels downward through the float 261.
In a preferred embodiment, the channel switching device is further provided with a housing 24, and the first infusion channel 211 and the second infusion channel 212 are fixed inside the housing 24 to keep the structure neat and the infusion channels are easily in a vertical state at the same time when in use.
Example 2
Embodiment 1 has a relatively inconvenient design, that is, the ring magnets need to be installed one by one after the liquid medicine is filled into the infusion channel, and the operation is troublesome and complicated. In order to overcome the defect, the method is improved on the basis of the embodiment 1.
As shown in fig. 6 and 7, the first transfusion channel 211 in this embodiment is provided without the support spring 2111, the ring-shaped magnet 27 is fixedly provided at the bottom of the first transfusion channel 211, and the hanging portion 28 is fixedly provided above the float. The hanging part 28 is provided with a hanging rod 281 which is positioned on the central axis of the first infusion channel 211 and is vertically downward. The bottom of the suspension rod 281 is symmetrically pivoted with the supporting rod 282, the bottom of the supporting rod 282 is pivoted with the side wall at the bottom of the suspension rod 281, and the top is a free end. The connection spring 283 connects the sidewall of the suspension lever 281 and the top of the supporting lever 282 to restrict the movement of the top of the supporting lever 282 such that the two supporting levers 282 have a V-shape when not subjected to other external forces. The bottom of the suspension rod 281 is further provided with a support ring 284, the support ring 284 being located below the support rod 282 and having an outer diameter smaller than the inner diameter of the restraining sleeve 263.
A bayonet portion 263 is provided on the top of the float 261. The clamping sleeve part 263 is of a sleeve structure, the inner diameter of the upper part is larger than that of the lower part, an annular flange is arranged at the top of the clamping sleeve part 263, and the inner diameter of the annular flange is the same as that of the lower part of the clamping sleeve part 263. A restraining sleeve 2631 is also provided in the ferrule portion 263, and the outer diameter of the restraining sleeve 2631 is substantially the same as the inner diameter of the lower portion of the ferrule portion 263 and slightly smaller than the inner diameter of the lower portion of the ferrule portion 263 so that it does not move transversely relative to the ferrule portion 263 and does not generate friction to resist relative movement when longitudinal relative movement occurs. A pair of spring tabs 26311 are disposed on an inner wall of the constraining sleeve 2631 near the bottom, and a section of the spring tabs 26311 is disposed on the inner wall of the constraining sleeve 2631, and the other end thereof extends obliquely downward. The distance between the protruding ends of the two spring tabs 26311 is smaller than the outer diameter of the support ring 284. The depth of the restraining sleeve 2631 is set such that when the spring 26311 is located above the supporting ring 284, the inner wall of the restraining sleeve 2631 compresses the supporting rods 282 to rotate centripetally around the shaft, so that the top-to-top distance between the two supporting rods 282 is smaller than the inner diameter of the annular rib of the snap-fit portion 263.
In use, in the initial state, as shown in fig. 7, the supporting rod 282 is in a V-shape under the action of its own weight and the connecting spring 283, and the rib of the ferrule portion 263 is supported on the top of the supporting rod 282, so that the lancing assembly 26 is suspended on the suspending portion 28, and the lancing assembly 26 is prevented from accidentally puncturing the isolation film 2511. When the first medical fluid is injected into and fills the first infusion path 211, the lancing assembly 26 floats, the restraining sleeve 2631 in the ferrule portion 263 moves upward along with the entire lancing assembly, and the final formed state is shown in fig. 8, the bottom of the restraining sleeve 2631 abuts against the bottom of the hanging rod 281, and the spring piece 26311 is located above the supporting ring 284. Due to the pressing action of the top of the restraining sleeve 2631 on the supporting rods 282, the springs 283 are compressed, the angle of the V formed by the two supporting rods 282 is closed, and the distance between the top ends of the V is smaller than the inner diameter of the rib of the clamping sleeve portion 263. When the infusion of the first medical fluid is about to be completed, the needle puncturing assembly 26 descends along with the descending of the fluid level, but the restraining sleeve is retained in place due to the spring strip 26311, the two supporting rods 282 are still in the folded state, and because the top ends of the supporting rods 282 have smaller inner diameters than the flanges of the clamping sleeve parts 263 when in the folded state, the needle puncturing assembly 26 cannot be hindered from descending, the needle puncturing assembly 26 is separated from the hanging part 28, reaches the bottom of the infusion channel 211, punctures the isolating membrane 2511 under the action of magnetic force, enables the second infusion channel 212 to be communicated with the water outlet 23, and starts the infusion of the second medical fluid.
In a preferred embodiment, the bottom of the ferrule portion 263 and the restraining sleeve 2631 are provided with through holes to prevent retention of the medical fluid.
It should be noted that the embodiment of the present invention has been described as including two infusion paths for illustrative purposes, but it should be clear to those skilled in the art that an infusion path and a communication isolation assembly may be added between the first infusion path and the second infusion path to connect the infusion path of one priority and the infusion path of the next priority, so as to form a continuous infusion set with more infusion paths.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (1)
1. A magnetic suction type continuous transfusion device with channels switched sequentially comprises a bottle stopper puncture part, a channel automatic switching device, a dropping funnel and a transfusion needle in sequence on a downstream path,
the automatic channel switching device is provided with a water outlet pipe and a plurality of cylindrical infusion channels, and the water outlet pipe is communicated with the drip chamber;
the cylindrical infusion channels respectively have different priorities according to the infusion sequence, the bottom water outlet of the infusion channel with the highest priority is communicated with the water outlet pipe, and the bottom water outlets of the infusion channels with adjacent priorities are connected by a communication isolation assembly;
the acupuncture components are arranged in the infusion channels except for the lowest priority, the density of the acupuncture components is smaller than that of water, the acupuncture components comprise floats and acupuncture needles connected to the centers of the bottoms of the floats, the floats are in a round cake shape, annular iron sheets are arranged at the bottoms of the floats, annular magnets corresponding to the annular iron sheets are arranged at the bottoms of the infusion channels, and when the floats are close to the bottoms of the infusion channels, the acupuncture components are pulled down under the action of magnetic force between the annular magnets and the annular iron sheets, so that the isolation and communication components are changed into a communication state from an isolation state;
the bottle stopper puncture part is provided with bottle stopper puncture devices with the number corresponding to that of the infusion channels, and the top of each infusion channel is communicated with the corresponding bottle stopper puncture device;
the communication isolation assembly comprises a three-way piece and a connecting pipe, wherein the top opening of the three-way piece is connected with the bottom water outlet of the infusion channel, a side opening of the three-way piece is connected with the bottom opening of the three-way piece corresponding to the infusion channel of the previous priority through the connecting pipe, the bottom opening of the three-way piece is connected with the side opening of the three-way piece corresponding to the infusion channel of the next priority through the connecting pipe, an isolation film is arranged in the three-way piece to isolate communication between the bottom water outlets of the infusion channels of adjacent priorities, the isolation film is arranged above the bottom opening of the three-way piece and is lower than the side opening of the three-way piece, and the side opening of the three-way piece corresponding to the infusion channel of the highest priority is directly connected with the water outlet pipe;
the infusion channel is also provided with a hanging part which is positioned above the acupuncture component, and the top of the acupuncture component is provided with a hanging clamping sleeve part which forms a detachable structure with the hanging part;
the hanging part is provided with a hanging rod which is positioned on the central axis of the infusion channel, the bottom of the hanging rod is symmetrically coupled with a pair of supporting rods, the bottom of each supporting rod is coupled with the hanging rod, the top of each supporting rod is a free end, and a connecting spring is arranged between the top end of each supporting rod and the hanging rod, so that the pair of supporting rods form a compressible V shape;
the needle-puncturing assembly is hung on the supporting rod of the hanging part through the annular rib of the clamping sleeve part;
the clamping sleeve part is internally provided with a restraining sleeve, the restraining sleeve can be sleeved on the bottom of the hanging rod when moving upwards along with the needling component, and the pair of supporting rods are compressed, so that the distance between the top ends of the V-shaped shapes formed by the pair of supporting rods is smaller than the inner diameter of the annular flange;
the bottom of the suspension rod is provided with a support ring which is positioned below the support rod, and a limiting device is arranged inside the restraint sleeve to support the restraint sleeve on the support ring;
the limiting device is a pair of spring pieces which are symmetrically arranged, one end of each spring piece is fixed on the inner wall of the restraining sleeve, the other end of each spring piece obliquely extends downwards, and the distance between the extending end parts of the spring pieces is smaller than the outer diameter of the support ring;
the outer diameter of the restraining sleeve is matched with the inner diameter of the clamping sleeve part, so that the restraining sleeve does not move transversely relative to the clamping sleeve part, but does not influence the longitudinal relative movement between the restraining sleeve and the clamping sleeve part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800856.7A CN113521444B (en) | 2021-07-15 | 2021-07-15 | Continuous infusion apparatus with acupuncture type sequential channel switching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800856.7A CN113521444B (en) | 2021-07-15 | 2021-07-15 | Continuous infusion apparatus with acupuncture type sequential channel switching |
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| CN113521444A CN113521444A (en) | 2021-10-22 |
| CN113521444B true CN113521444B (en) | 2022-06-21 |
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| US4256103A (en) * | 1978-10-11 | 1981-03-17 | James Paxinos | Automatic sequential fluid flow apparatus |
| US4333454A (en) * | 1980-01-14 | 1982-06-08 | Hargest Iii Thomas S | Automatic tubular feeding apparatus and method |
| CN201022882Y (en) * | 2007-04-02 | 2008-02-20 | 谢秋良 | Transfusion device |
| CN202478293U (en) * | 2012-03-26 | 2012-10-10 | 唐敏峰 | Vein infusion apparatus |
| CN205459877U (en) * | 2016-01-28 | 2016-08-17 | 成都艾比科生物科技有限公司 | Infusion bag that flows backwards is prevented to multicavity room |
| CN106456873A (en) * | 2014-06-30 | 2017-02-22 | 康尔福盛303公司 | Passive restart y-site |
| CN106470715A (en) * | 2014-06-30 | 2017-03-01 | 康尔福盛303公司 | Fluid input multiport instils chamber |
| CN109157697A (en) * | 2018-08-27 | 2019-01-08 | 尹永远 | A kind of infusion-bottle hanging stand box of automatic decanting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120203204A1 (en) * | 2011-02-08 | 2012-08-09 | Briggs David M | Retro-Primed Medication Delivery System |
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2021
- 2021-07-15 CN CN202110800856.7A patent/CN113521444B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256103A (en) * | 1978-10-11 | 1981-03-17 | James Paxinos | Automatic sequential fluid flow apparatus |
| US4333454A (en) * | 1980-01-14 | 1982-06-08 | Hargest Iii Thomas S | Automatic tubular feeding apparatus and method |
| CN201022882Y (en) * | 2007-04-02 | 2008-02-20 | 谢秋良 | Transfusion device |
| CN202478293U (en) * | 2012-03-26 | 2012-10-10 | 唐敏峰 | Vein infusion apparatus |
| CN106456873A (en) * | 2014-06-30 | 2017-02-22 | 康尔福盛303公司 | Passive restart y-site |
| CN106470715A (en) * | 2014-06-30 | 2017-03-01 | 康尔福盛303公司 | Fluid input multiport instils chamber |
| CN205459877U (en) * | 2016-01-28 | 2016-08-17 | 成都艾比科生物科技有限公司 | Infusion bag that flows backwards is prevented to multicavity room |
| CN109157697A (en) * | 2018-08-27 | 2019-01-08 | 尹永远 | A kind of infusion-bottle hanging stand box of automatic decanting |
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|---|---|
| CN113521444A (en) | 2021-10-22 |
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