CN114404727B - Portable single-channel injection pump and application method thereof - Google Patents
Portable single-channel injection pump and application method thereof Download PDFInfo
- Publication number
- CN114404727B CN114404727B CN202111639541.5A CN202111639541A CN114404727B CN 114404727 B CN114404727 B CN 114404727B CN 202111639541 A CN202111639541 A CN 202111639541A CN 114404727 B CN114404727 B CN 114404727B
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- Prior art keywords
- injection
- core rod
- sliding plate
- piston core
- sliding
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- 238000002347 injection Methods 0.000 title claims abstract description 137
- 239000007924 injection Substances 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims description 6
- 239000003814 drug Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 41
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a portable single-channel injection pump, which comprises a base and a supporting plate arranged at the center of the base, wherein a movable first screw rod and a movable second screw rod are arranged between the base and the supporting plate, a first motor and a second motor are arranged on the base, a rotor of the first motor is connected with the first screw rod, a rotor of the second motor is connected with the second screw rod, a pair of sliding rods are arranged on the base, a first sliding plate and a second sliding plate are sleeved on the sliding rods, the bottom end of the first sliding plate is sleeved on the first screw rod and is in threaded connection with the first screw rod, the bottom end of the second sliding plate is sleeved on the second screw rod and is in threaded connection with the second screw rod, a clamping groove is formed in the end wall of the base, an injection cylinder is clamped in the clamping groove, and a pair of injection channels are formed in the injection cylinder. Compared with the prior art, the invention has the advantages that: the operation is convenient, the injection flow speed and the injection angle can be changed, and the applicability is strong.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a portable single-channel injection pump and a use method thereof.
Background
During the course of medical treatment, there are always situations in which it is necessary to maintain a certain concentration of drug in the patient's body for therapeutic purposes. The traditional injection device is operated by a nurse, which has great uncertainty and depends on the experience level of the nurse, and under the condition of needing injection and uniform injection, the human body can be jogged by respiratory heartbeat due to the limitation of the human body, and the injection is difficult, and the injection is long in time consumption and strict in requirement, so that the nurse is difficult to work and consumes heart. In the prior art, injection is carried out by adopting an injection pump, but the existing injection pump cannot control the outlet flow rate of the injection liquid medicine under the condition of inconvenient injection speed maintenance according to the needs of patients, and has poor applicability.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides the portable single-channel injection pump which is convenient to operate, can change the injection flow rate and the injection angle and has strong applicability.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a portable single channel syringe pump, includes the base and sets up the backup pad at base central point put, be equipped with movable first lead screw and second lead screw between base and the backup pad, be equipped with first motor and second motor on the base, the rotor and the first lead screw connection of first motor, the rotor and the second lead screw connection of second motor, be equipped with a pair of slide bar on the base, the cover is equipped with first slide and second slide on the slide bar, the bottom cover of first slide is established on first lead screw and rather than threaded connection, the bottom cover of second slide establish on second lead screw and rather than threaded connection, the draw-in groove has been seted up on the end wall of base, the card is equipped with the injection tube in the draw-in groove, a pair of injection channel has been seted up in the injection channel, is equipped with first piston core bar in the other injection channel, set up the first draw-in groove that is used for chucking first piston core bar tip on the first slide, slide has been seted up on one side that is close to first draw-in groove on the first slide, set up on the second slide and has seted up the second draw-in groove with the second clamp core bar and has been used for the hand grip on the side wall of the base.
Specifically, the retaining member comprises an arc-shaped retaining piece, and the two ends of the arc-shaped retaining piece are provided with retaining bolts in threaded connection with the base.
Specifically, the first motor and the second motor are two-way stepping motors.
Specifically, sleeves sleeved on the sliding rods are fixed on the first sliding plate and the second sliding plate.
Specifically, the injection cylinder comprises a cylinder body and an injection head, a telescopic hose is connected between the cylinder body and the injection head, one end of the injection head is hinged to the cylinder body, a groove is formed in the cylinder body, a plug which is inserted into the groove is arranged on the injection head, a cylindrical hole which is communicated with the groove is formed in the cylinder body, a cylindrical slideway is formed in the middle of the cylindrical hole, a plug pin which is in sliding connection with the cylindrical slideway is arranged in the cylindrical hole, a baffle ring is fixedly connected to the periphery of the plug pin in the cylindrical slideway, a spring which is sleeved on the plug pin is arranged between the baffle ring and the side wall of the cylindrical slideway, one end of the plug pin extends into the groove, and the other end of the plug pin extends to the outside of the cylinder body and is provided with a pull head.
The invention more particularly discloses a use method of a portable single-channel injection pump, which comprises the following steps:
placing the injection head in the liquid medicine, pulling the first piston core rod to extract the liquid medicine, filling the injection channel where the first piston core rod is positioned with the liquid medicine, and pulling the second piston core rod to extract the liquid medicine, filling the injection channel where the second piston core rod is positioned with the liquid medicine;
placing the injection tube in the clamping groove, clamping the end part of the first piston core rod in the first clamping groove, enabling the end part of the second piston core rod to pass through the slideway and be clamped in the second clamping groove, covering the arc-shaped locking piece on the injection tube, and locking the injection tube by rotating the locking bolt;
starting a first motor to drive a first lead screw to rotate, driving a first sliding plate to move on a sliding rod by the rotating first lead screw, pushing a first piston core rod by the moving first sliding plate, injecting the liquid medicine in an injection channel of the first piston core rod into a human body by the first piston core rod, starting a second motor to drive a second lead screw to rotate after the injection of the first piston core rod is completed, driving a second sliding plate to move on the sliding rod by the rotating second lead screw, and pushing a second piston core rod by the moving second sliding plate, wherein the liquid medicine in the injection channel of the second piston core rod is injected into the human body by the second piston core rod, so that the gradual injection with small pressure and small flow rate is realized;
when the liquid medicine is injected at a high pressure and a high flow rate, the first motor and the second motor are started at the same time, the first sliding plate and the second sliding plate synchronously move to push the first piston core rod and the second piston core rod to synchronously move, and the liquid medicine in the two injection channels is synchronously injected into a human body, so that the liquid medicine is rapidly injected at a high pressure;
when the injection angle is limited by the position and needs to be changed, the plug is pulled to move outwards by the pull head, then the injection head is rotated to enable the plug on the injection head to be pulled out of the groove, and the telescopic hose is stretched by rotating the injection head to enable the injection head to adapt to the injection angle;
and repeating the steps according to the injection speed requirement after the angle of the injection head is properly adjusted.
After adopting the structure, the invention has the following advantages:
1. the first motor is electrified to drive the first screw rod to rotate, the first screw rod drives the first slide plate to move on the slide rod step by step, the moving first slide plate pushes the first piston core rod to push the liquid medicine in the injection channel into a human body step by step, when the liquid medicine in the injection channel is pushed into the human body, the second motor is electrified to drive the second screw rod to rotate, the second screw rod drives the second slide plate to move on the slide rod step by step, the moving second slide plate pushes the second piston core rod to push the liquid medicine in the injection channel into the human body step by step, the first piston core rod and the second piston core rod can be synchronously controlled to move simultaneously according to the injection requirement, and the flow rate of the liquid medicine outlet can be effectively regulated under the condition that the injection speed is unchanged.
2. According to the invention, the rotatable injection head is arranged on the barrel body of the injection barrel, so that the injection can be performed on a human body through different angles, the restriction of human body angle factors is avoided, and the applicability is improved.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a top view of fig. 1 of the present invention.
Fig. 3 is a schematic structural view of the syringe of the present invention.
Fig. 4 is a perspective view of the syringe of the present invention.
Fig. 5 is a front view of the syringe of the present invention.
Fig. 6 is an enlarged view of the portion a of fig. 5 according to the present invention.
As shown in the figure: 1. base, 2, backup pad, 3, first lead screw, 4, second lead screw, 5, first motor, 6, second motor, 7, slide bar, 8, first slide, 9, second slide, 10, draw-in groove, 11, syringe, 1101, barrel, 1102, injector head, 12, injection channel, 13, first plunger rod, 14, second plunger rod, 15, first draw-in groove, 16, slide, 17, second draw-in groove, 18, retaining member, 1801, arc-shaped retaining piece, 1802, retaining bolt, 19, carrying handle, 20, sleeve, 21, hose, 22, groove, 23, plug, 24, cylindrical hole, 25, cylindrical slide, 26, latch, 27, retainer, 28, spring, 29, pull head.
Detailed Description
In the description of the present invention, it should be noted that, in this document, the terms "upper", "lower", "inner", "top", "both sides", "both ends", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and the like are to be construed broadly, as for example, "connected," either permanently connected, detachably connected, integrally connected, mechanically connected, or indirectly connected via an intermediary. The specific meaning of the above terms in the present invention will be understood in a specific case by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-3, the portable single-channel injection pump provided by the invention comprises a base 1 and a supporting plate 2 arranged at the center of the base 1, wherein a movable first lead screw 3 and a movable second lead screw 4 are arranged between the base 1 and the supporting plate 2, the base 1 is provided with a first motor 5 and a second motor 6, a rotor of the first motor 5 is connected with the first lead screw 3, a rotor of the second motor 6 is connected with the second lead screw 4, the base 1 is provided with a pair of sliding rods 7, the sliding rods 7 are sleeved with a first sliding plate 8 and a second sliding plate 9, the bottom end of the first sliding plate 8 is sleeved with the first lead screw 3 and is in threaded connection with the first sliding plate 3, the bottom end of the second sliding plate 9 is sleeved with the second lead screw 4 and is in threaded connection with the second sliding plate 4, a clamping groove 10 is formed in the end wall of the base 1, an injection cylinder 11 is clamped in the clamping groove 10, a pair of injection channels 12 are formed in the injection channels, a first piston 13 is arranged in the first injection channels, a second piston 14 is arranged in the other injection channels, a first core rod 8 is provided with a pair of sliding rods 14, a clamping groove 16 is formed in the second core rod 8 and is arranged at the end part of the clamping groove 16 and is provided with a side wall 16 opposite to the first sliding rod 16, and is provided with a sliding groove 16 on the sliding groove 16.
Further, the locking member 18 includes an arc-shaped locking piece 1801, and locking bolts 1802 screwed with the base 1 are provided at both ends of the arc-shaped locking piece 1801.
Further, the first motor 5 and the second motor 6 are two-way stepper motors.
Further, the first sliding plate 8 and the second sliding plate 9 are respectively fixed with a sleeve 20 sleeved on the sliding rod 7, and the stability of the first sliding plate and the second sliding plate moving on the sliding rod can be increased by arranging the sleeves 20.
When the injection device is used, under the condition that the pushing speed of the first piston core rod and the second piston core rod is inconvenient, when the injection outlet is required to be at a low flow rate, the first motor is controlled to be electrified to drive the first screw rod to rotate, the first screw rod is driven to rotate to drive the first slide plate to move on the slide rod step by step, the moving first slide plate pushes the first piston core rod to push the liquid medicine in the injection channel into a human body step by step, after the liquid medicine in the injection channel is pushed into the human body, the second motor is electrified to drive the second screw rod to rotate, the second screw rod drives the second slide plate to move on the slide rod step by step, and the moving second slide plate pushes the liquid medicine in the injection channel to push the liquid medicine in the injection outlet into the human body step by step, so that the injection outlet is injected at a low flow rate; when the injection outlet is required to inject at a high flow rate, the first motor and the second motor are started simultaneously, the first piston core rod and the second piston core rod are controlled to synchronously move to push the liquid medicine to be injected, the injection port is controlled to inject at a high flow rate by increasing the pushing pressure, the injection flow rate of the injection port can be effectively controlled by controlling the sequence of the movement of the first piston core rod and the second piston core rod, and the applicability in injection is stronger.
Embodiment 2 referring to fig. 4-6, the present invention provides a portable single channel syringe pump, which is different from embodiment 1 in that:
further, the injection cylinder 11 includes a cylinder 1101 and an injection head 1102, a telescopic hose 21 is connected between the cylinder 1101 and the injection head 1102, one end of the injection head 1102 is hinged on the cylinder 1101, a groove 22 is provided on the cylinder 1101, a plug 23 inserted into the groove 22 is provided on the injection head 1102, a cylindrical hole 24 communicating with the groove 22 is provided on the cylinder 1101, a cylindrical slideway 25 is provided in the middle of the cylindrical hole 24, a latch 26 slidingly connected with the cylindrical slideway 24 is provided in the cylindrical hole 24, a baffle ring 27 is fixedly connected with the periphery of the latch 26 in the cylindrical slideway 25, a spring 28 sleeved on the latch 26 is provided between the baffle ring 27 and the side wall of the cylindrical slideway 25, one end of the latch 26 extends into the groove 22, and the other end extends to the outside of the cylinder 1101 and is provided with a pull head 29.
When the injection device is used, when the injection cylinder angle is required to be changed to inject a human body, the plug pin is pulled to move outwards through the pull head, then the injection head is rotated to the angle required to inject the human body, the liquid medicine is conveyed through the telescopic hose arranged between the injection head and the cylinder body, the injection angle is more flexible compared with the injection device in embodiment 1, and the applicability of the injection angle is improved.
The invention further discloses a use method of the portable single-channel injection pump, which comprises the following steps:
placing the injection head 1102 in the liquid medicine, pulling the first piston core rod 13 to extract the liquid medicine, filling the injection channel where the first piston core rod is positioned with the liquid medicine, and pulling the second piston core rod 14 to extract the liquid medicine, filling the injection channel where the second piston core rod is positioned with the liquid medicine;
placing the injection tube 11 in the clamping groove 10, clamping the end part of the first piston core rod 13 in the first clamping groove 15, enabling the end part of the second piston core rod 14 to pass through the slide way 16 and be clamped in the second clamping groove 17, covering the arc-shaped locking piece 1801 on the injection tube 11, and locking the injection tube 11 by rotating the locking bolt 1802;
starting a first motor 5 to drive a first lead screw 3 to rotate, wherein the rotating first lead screw 3 drives a first sliding plate 8 to move on a sliding rod 7, the moving first sliding plate 8 pushes a first piston core rod 13, the first piston core rod 13 injects liquid medicine in an injection channel into a human body, after the first piston core rod 13 is injected, a second motor 6 is started to drive a second lead screw 4 to rotate, the rotating second lead screw 4 drives a second sliding plate 9 to move on the sliding rod 7, the moving second sliding plate 9 pushes a second piston core rod 14, and the second piston core rod 14 injects the liquid medicine in the injection channel into the human body, so that gradual injection with small pressure and small flow rate is realized;
when the liquid medicine is injected at a high pressure and a high flow rate, the first motor 5 and the second motor 6 are started at the same time, the first sliding plate 8 and the second sliding plate 9 synchronously move to push the first piston core rod 13 and the second piston core rod 14 to synchronously move, and the liquid medicine in the two injection channels is synchronously injected into a human body, so that the liquid medicine is rapidly injected at a high pressure;
when the injection angle is required to be changed due to the position limitation, the plug pin 26 is pulled to move outwards through the pull head 29, then the injection head 1102 is rotated, the plug 23 on the injection head 1102 is pulled out of the groove 22, and the telescopic hose 21 is stretched through rotating the injection head 1102, so that the injection head 1102 is matched with the injection angle;
and repeating the steps according to the injection speed requirement after the angle of the injection head is properly adjusted.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (5)
1. The utility model provides a portable single channel syringe pump, includes base (1) and sets up backup pad (2) at base (1) central point put, be equipped with movable first lead screw (3) and second lead screw (4) between base (1) and backup pad (2), be equipped with first motor (5) and second motor (6) on base (1), the rotor of first motor (5) is connected with first lead screw (3), and the rotor of second motor (6) is connected with second lead screw (4), its characterized in that: the base (1) is provided with a pair of sliding rods (7), the sliding rods (7) are sleeved with a first sliding plate (8) and a second sliding plate (9), the bottom end of the first sliding plate (8) is sleeved on the first lead screw (3) and is in threaded connection with the first sliding plate, the bottom end of the second sliding plate (9) is sleeved on the second lead screw (4) and is in threaded connection with the second lead screw, the end wall of the base (1) is provided with a clamping groove (10), the clamping groove (10) is internally clamped with an injection cylinder (11), the injection cylinder (11) is internally provided with a pair of injection channels (12), one injection channel is internally provided with a first piston core rod (13), the other injection channel is internally provided with a second piston core rod (14), the first sliding plate (8) is internally provided with a first clamping groove (15) used for clamping the end part of the first piston core rod (13), one side, close to the first sliding plate (8) is provided with a sliding way (16), the second sliding way (9) is provided with a second clamping groove (17) opposite to the first sliding groove (16), the second sliding plate (16) is provided with a second clamping groove (17) and the second sliding rod (17) is arranged on the second sliding way (9) and penetrates through the second sliding way (11), a portable handle (19) is arranged on the side wall of the base (1);
the injection tube (11) comprises a tube body (1101) and an injection head (1102), a telescopic hose (21) is connected between the tube body (1101) and the injection head (1102), one end of the injection head (1102) is hinged to the tube body (1101), a groove (22) is formed in the tube body (1101), a plug (23) which is spliced with the groove (22) is arranged on the injection head (1102), a cylindrical hole (24) which is communicated with the groove (22) is formed in the tube body (1101), a cylindrical slideway (25) is formed in the middle of the cylindrical hole (24), a plug pin (26) which is connected with the cylindrical hole in a sliding mode is arranged in the cylindrical hole (24), a baffle ring (27) is fixedly connected to the periphery of the plug pin (26) in the cylindrical slideway (25), a spring (28) which is sleeved on the plug pin (26) is arranged between the baffle ring (27) and the side wall of the cylindrical slideway (25), one end of the plug pin (26) extends into the groove (22), and the other end of the plug pin (26) extends to the outside of the tube body (1101) and is provided with a pull head (29).
2. The portable single channel syringe pump of claim 1, wherein: the locking piece (18) comprises an arc-shaped locking piece (1801), and locking bolts (1802) in threaded connection with the base (1) are arranged at two ends of the arc-shaped locking piece (1801).
3. The portable single channel syringe pump of claim 1, wherein: the first motor (5) and the second motor (6) are two-way stepping motors.
4. The portable single channel syringe pump of claim 1, wherein: the first sliding plate (8) and the second sliding plate (9) are both fixedly provided with sleeves (20) sleeved on the sliding rods (7).
5. The method of using a portable single channel syringe pump according to any of claims 1-4, comprising the steps of:
placing the injection head (1102) in the liquid medicine, pulling the first piston core rod (13) to extract the liquid medicine, filling the injection channel where the first piston core rod is positioned with the liquid medicine, and pulling the second piston core rod (14) to extract the liquid medicine, filling the injection channel where the second piston core rod is positioned with the liquid medicine;
placing the injection tube (11) in the clamping groove (10), clamping the end part of the first piston core rod (13) in the first clamping groove (15), enabling the end part of the second piston core rod (14) to pass through the slide way (16) and be clamped in the second clamping groove (17), covering the arc-shaped locking piece (1801) on the injection tube (11), and locking the injection tube (11) by rotating the locking bolt (1802);
starting a first motor (5), driving a first lead screw (3) to rotate, driving a first sliding plate (8) to move on a sliding rod (7) by the rotating first lead screw (3), pushing a first piston core rod (13) by the moving first sliding plate (8), injecting liquid medicine in an injection channel of the first piston core rod (13) into a human body, starting a second motor (6) after the first piston core rod (13) is injected, driving a second lead screw (4) to rotate, driving a second sliding plate (9) to move on the sliding rod (7) by the rotating second lead screw (4), and pushing a second piston core rod (14) by the moving second sliding plate (9), wherein the liquid medicine in an injection channel of the second piston core rod (14) is injected into the human body, so that small-pressure small-flow-rate gradual injection is realized;
when the liquid medicine is injected under high pressure and high flow rate, the first motor (5) and the second motor (6) are started, the first sliding plate (8) and the second sliding plate (9) synchronously move, the first piston core rod (13) and the second piston core rod (14) are pushed to synchronously move, the liquid medicine in the two injection channels is synchronously injected into a human body, and the liquid medicine is rapidly injected under high pressure;
when the injection angle is required to be changed due to the position limitation, the plug pin (26) is pulled to move outwards through the pull head (29), then the injection head (1102) is rotated, the plug (23) on the injection head (1102) is pulled out of the groove (22), and the telescopic hose (21) is stretched through rotating the injection head (1102), so that the injection head (1102) is matched with the injection angle;
and repeating the steps according to the injection speed requirement after the angle of the injection head is properly adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639541.5A CN114404727B (en) | 2021-12-29 | 2021-12-29 | Portable single-channel injection pump and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639541.5A CN114404727B (en) | 2021-12-29 | 2021-12-29 | Portable single-channel injection pump and application method thereof |
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| Publication Number | Publication Date |
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| CN114404727A CN114404727A (en) | 2022-04-29 |
| CN114404727B true CN114404727B (en) | 2023-08-18 |
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| CN214259567U (en) * | 2020-11-24 | 2021-09-24 | 永荣 | Poultry animal doctor uses syringe |
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| CN114404727A (en) | 2022-04-29 |
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Denomination of invention: A portable single channel injection pump and its usage method Granted publication date: 20230818 Pledgee: Bank of China Limited Xuzhou Quanshan sub branch Pledgor: Jiangsu pumaisi Medical Technology Co.,Ltd. Registration number: Y2024980013105 |