CN113083813B - Automatic tube flushing device for enteral nutrient solution infusion - Google Patents
Automatic tube flushing device for enteral nutrient solution infusion Download PDFInfo
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- CN113083813B CN113083813B CN202110366650.8A CN202110366650A CN113083813B CN 113083813 B CN113083813 B CN 113083813B CN 202110366650 A CN202110366650 A CN 202110366650A CN 113083813 B CN113083813 B CN 113083813B
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- clamping
- gear
- tube
- nutrient solution
- solution infusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Abstract
The invention discloses an automatic tube flushing device for enteral nutrient solution infusion, and relates to the field of medical instruments. Provides an automatic tube flushing device for enteral nutrient solution infusion, which can automatically perform nutrient solution infusion flushing. The automatic tube flushing device for enteral nutrient solution infusion comprises an injector fixing structure, a clamping mechanism, a power device, a tube flushing driving mechanism and a clamping driving mechanism, wherein the injector fixing structure can fix an injector, the power device can drive the clamping mechanism and the tube flushing driving mechanism to act, the clamping mechanism can clamp a nutrient solution infusion tube to stop nutrient solution infusion, and the tube flushing driving mechanism can drive the injector to inject tube flushing solution into the nutrient solution infusion tube. The invention has higher automation degree and can reduce the occupation of nutrient solution infusion wash pipe on the nurse time. If a controller is further arranged, the controller counts time and automatically starts the device at intervals, so that the tube flushing can be completely and automatically carried out, and the automation degree of nutrient solution infusion is further improved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an automatic tube flushing device for enteral nutrient solution infusion.
Background
Nutrient infusion refers to the infusion of nutrient solution into the intestines and stomach of a patient by a nutrient solution infusion device as in infusion. In order to prevent blockage, flushing is needed during nutrient solution infusion, and the application of pulse flushing pipes with different intervals in continuous infusion of enteral nutrient solution blockage in the period 2 of volume 25 of 1 month in 2014 of Hainan medicine discloses that flushing is needed at intervals during nutrient solution infusion, namely 30mL of flushing liquid is injected into a nutrient solution infusion device by a syringe, and the interval time of flushing is preferably 4 hours. This washing pipe mode relies on the nurse manual work to go on, need occupy the long time.
ZL201921552268.0 discloses an enteral nutrition liquid infusion ware, including first branch pipe, second branch pipe and infusion hose, first branch pipe with the second branch pipe connects in parallel infusion hose's one end, infusion hose's the other end is equipped with the stomach tube and connects, is equipped with first flow controller on the first branch pipe, is equipped with second flow controller on the second branch pipe, is equipped with third flow controller on the infusion hose, and first branch pipe is used for carrying the nutrient solution, and the second branch pipe is used for carrying the washing liquid. This enteral nutrition liquid infusion ware relies on the mode of infusing towards the pipe liquid to carry out the washing pipe, only needs adjust flow rate controller easy operation during the washing pipe, but fills the pipe pressure and inject a lot less than the syringe, and the washing pipe effect is limited.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an automatic tube flushing device for enteral nutrient solution infusion, which can automatically perform nutrient solution infusion flushing.
The technical scheme adopted for solving the problems is as follows: the automatic tube flushing device for enteral nutrient solution infusion comprises an injector fixing structure, a clamping mechanism, a power device, a tube flushing driving mechanism and a clamping driving mechanism, wherein the injector fixing structure can fix an injector, the power device can drive the clamping mechanism and the tube flushing driving mechanism to act, the clamping mechanism can clamp a nutrient solution infusion tube to stop nutrient solution infusion, and the tube flushing driving mechanism can drive the injector to inject tube flushing solution into the nutrient solution infusion tube.
Further, the method comprises the following steps: the automatic tube flushing device for enteral nutrient solution infusion comprises a shell; the injector fixing structure is connected with the shell and can fix the injector in the up-down direction; the power device comprises a motor and a first gear, the motor is arranged on the shell, and the first gear is connected with the motor;
the flushing pipe driving mechanism comprises a flushing pipe driving sleeve, a screw rod, a guide structure and a pressing structure, the screw rod is vertically arranged, the guide structure is connected with the shell, the guide structure can guide the screw rod to move up and down, the flushing pipe driving sleeve is installed on the shell, the shell limits the movement of the flushing pipe driving sleeve, the flushing pipe driving sleeve is connected with the screw rod to form a screw rod nut mechanism, a second gear and a third gear are arranged on the flushing pipe driving sleeve, and the pressing structure is arranged corresponding to the injector fixing structure and is connected with the screw rod; the second gear is meshed with the first gear;
the clamping driving mechanism is arranged on the shell and comprises a fourth gear and a cam, the fourth gear and the cam are coaxially arranged and connected, the fourth gear is meshed with the third gear, the cam is in a circular shape with a concave part, and the concave part is in smooth transition with the rest part of the cam;
the clamping mechanism comprises a clamping mechanism sleeve, a clamping and closing rod and a spring, the clamping mechanism sleeve is connected with the machine shell, an infusion tube groove is formed in the clamping mechanism sleeve, the clamping and closing rod is inserted into the clamping and closing mechanism sleeve and matched with the clamping and closing mechanism sleeve, and the spring supports the clamping and closing rod to enable the clamping and closing rod to abut against the cam; when the clamping and closing rod is abutted against the concave part, the clamping and closing rod retracts; when the clamping and closing rod is abutted against the rest positions of the cam, the clamping and closing rod extends out of the clamping and closing nutrient solution infusion tube positioned in the infusion tube groove.
Further, the method comprises the following steps: the second gear and the first gear form a reduction gear pair, and the fourth gear and the third gear form a reduction gear pair.
Further, the method comprises the following steps: the guide structure comprises a guide sliding block and a guide strip with a guide groove, the guide strip is connected with the machine shell, the guide sliding block is matched with the guide groove, and the guide sliding block is connected with the screw rod.
Further, the method comprises the following steps: the injector fixing structure comprises a fixing barrel and a bottom plate, the fixing barrel is vertically arranged and is connected with the machine shell, the bottom plate is connected to the lower end of the fixing barrel, and a through hole is formed in the bottom plate.
Further, the method comprises the following steps: the pressing structure comprises a cross beam and a pressing rod, the cross beam is connected with the pressing rod, and the pressing rod is vertically arranged right above the injector fixing structure and is in threaded connection with the cross beam.
Further, the method comprises the following steps: the automatic tube flushing device for enteral nutrient solution infusion comprises a controller, wherein the controller is installed on a machine shell and can time and control the action of a motor according to time.
The invention has the beneficial effects that: 1. as shown in FIG. 6, the present invention is used with a syringe and a nutrient solution infuser with infusion and washpipe branches. When in use, the invention is fixed at a high position and is positioned beside the infusion branch pipe; the infusion branch pipe is arranged in the clamping mechanism, the syringe sucks the flushing liquid and is fixed on the syringe fixing structure, and the flushing branch pipe is connected with the syringe. When the tube washing is needed, the invention is started, the clamping mechanism clamps and closes the infusion branch tube of the nutrient solution infusion tube to stop nutrient solution infusion, and the tube washing driving mechanism drives the injector to inject tube washing liquid into the tube washing branch tube of the nutrient solution infusion tube. Therefore, the invention has higher automation degree and can reduce the occupation of nutrient solution infusion wash pipe on nurse time. If a controller is further arranged, the controller counts time and automatically starts the device at intervals, so that the tube flushing can be completely and automatically carried out, and the automation degree of nutrient solution infusion is further improved.
2. The invention has the advantages of ingenious specific structure, simple structure and low cost, and can realize the clamping of the infusion branch pipe and the driving of the injector only by using one motor for driving. The nutrient solution and the washing liquid are not contacted in the using process, and the cleaning is not needed after the use for many times, so that the use is convenient.
Drawings
FIG. 1 is a schematic view of an automatic tube flusher for enteral feeding solution infusion;
FIG. 2 is a view of the drive mechanism of the washpipe;
FIG. 3 is a view of the structure of the clamping mechanism and the clamping driving mechanism;
FIG. 4 is a cam structure view;
FIG. 5 is a view from the direction A of FIG. 3;
FIG. 6 is a view showing the use of the automatic tube flushing device for enteral feeding solution infusion;
labeled as: syringe fixing structure 1, fixing cylinder 11, bottom plate 12, through hole 121, clamping mechanism 2, clamping mechanism sleeve 21, infusion tube groove 211, clamping rod 22, spring 23, power device 3, motor 31, first gear 32, wash tube driving mechanism 4, screw rod 41, wash tube driving sleeve 42, second gear 421, third gear 422, guide structure 43, guide strip 431, guide slider 432, pressing structure 44, beam 441, pressing rod 442, clamping driving mechanism 5, fourth gear 51, cam 52, recess 521, casing 6, controller 7, syringe 8, nutrient infusion tube 9, infusion branch tube 91 and wash tube branch tube 92.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the automatic tube flushing device for enteral nutrient solution infusion comprises a syringe fixing structure 1, a clamping mechanism 2, a power device 3, a tube flushing driving mechanism 4 and a clamping driving mechanism 5, wherein the syringe fixing structure 1 can fix a syringe 8, the power device 3 can drive the clamping mechanism 2 and the tube flushing driving mechanism 4 to act, the clamping mechanism 2 can clamp a nutrient solution infusion tube 9 to stop nutrient solution infusion, and the tube flushing driving mechanism 4 can drive the syringe 8 to inject a tube flushing solution into the nutrient solution infusion tube 9.
As shown in FIG. 6, the present invention is used with a syringe 8 and a nutrient solution infuser 9 having an infusion branch 91 and a flush branch 92. The infusion branch 91 of the nutrient solution infusion device 9 is connected with a nutrient solution container for nutrient solution infusion. The present invention is mounted high (e.g., on a pole or pole) alongside the infusion manifold 91; the infusion branch pipe 91 is arranged in the clamping mechanism 2, the syringe 8 sucks the flushing liquid and is fixed on the syringe fixing structure 1, and the flushing branch pipe 92 is connected with the syringe 8. When the tube flushing is needed, the invention is started, the clamping mechanism 2 clamps the infusion branch tube 91 to stop nutrient infusion and avoid backflow of the tube flushing liquid, and the tube flushing driving mechanism 4 drives the injector 8 to inject the tube flushing liquid into the tube flushing branch tube 92.
The automatic tube flushing device for enteral nutrient solution infusion can be started and stopped by a nurse according to time. In order to further increase the degree of automation, it is preferred that the automatic tube flusher for enteral feeding solution comprises a controller 7, the controller 7 is mounted on the housing 6, and the controller 7 is capable of timing and controlling the power unit 3 to start and stop according to the time. For example, a bolus of 30mL of flush may be initiated every 4 hours, as described in the background. Enough flushing fluid should be stored in the syringe 8 to allow multiple flushes.
The detailed structure of the automatic tube flushing device for enteral nutrition infusion is preferably as shown in fig. 1 to 5: the automatic tube flushing device for enteral nutrient solution infusion comprises a shell 6; the injector fixing structure 1 is connected with the shell 6, and the injector fixing structure 1 can fix the injector 8 in the vertical direction; the power device 3 comprises a motor 31 and a first gear 32, the motor 31 is arranged on the machine shell 6, and the first gear 32 is connected with the motor 31; the flushing pipe driving mechanism 4 comprises a flushing pipe driving sleeve 42, a screw rod 41, a guiding structure 43 and a pressing structure 44, wherein the screw rod 41 is vertically arranged, the guiding structure 43 is connected with the machine shell 6, the guiding structure 43 can guide the screw rod 41 to move up and down, the flushing pipe driving sleeve 42 is installed on the machine shell 6, the machine shell 6 limits the movement of the flushing pipe driving sleeve 42, the flushing pipe driving sleeve 42 is connected with the screw rod 41 to form a screw rod nut mechanism, a second gear 421 and a third gear 422 are arranged on the flushing pipe driving sleeve 42, and the pressing structure 44 is arranged corresponding to the injector fixing structure 1 and is connected with the screw rod 41; the second gear 421 meshes with the first gear 32; the clamping driving mechanism 5 is arranged on the machine shell 6, the clamping driving mechanism 5 comprises a fourth gear 51 and a cam 52, the fourth gear 51 and the cam 52 are coaxially arranged and connected, the fourth gear 51 is meshed with a third gear 422, the cam 52 is in a circular shape with a concave part 521, and the concave part 521 is in smooth transition with the rest part of the cam 52; the clamping mechanism 2 comprises a clamping mechanism sleeve 21, a clamping rod 22 and a spring 23, the clamping mechanism sleeve 21 is connected with the machine shell 6, an infusion tube groove 211 is arranged on the clamping mechanism sleeve 21, the clamping rod 22 is inserted into the clamping mechanism sleeve 21 and matched with the clamping mechanism sleeve 21, and the spring 23 supports the clamping rod 22 to enable the clamping rod 22 to abut against the cam 52; when the pinching-off lever 22 abuts on the concave portion 521, the pinching-off lever 22 is retracted; when clamping lever 22 abuts the rest of cam 52, clamping lever 22 extends to clamp nutrient solution infusion tube 9 in infusion tube well 211. Sliding bearings may be conventionally provided at each relative rotation.
The working principle of the washpipe driving mechanism 4 is as follows: the motor 31 drives the first gear 32 to rotate; the first gear 32 drives the second gear 421 to rotate so as to drive the washpipe driving sleeve 42 to rotate; the flushing pipe driving sleeve 42 is connected with the screw rod 41 to form a screw rod nut mechanism, so that the flushing pipe driving sleeve 42 drives the screw rod 41 to move up and down; the screw rod 41 moves downwards to drive the pressing structure 44 to move downwards, so that the piston of the injector 8 can be pressed, and the tube flushing is realized.
The operating principle of the clamping driving mechanism 5 and the clamping mechanism 2 is as follows: when the tube is not flushed, the pinching lever 22 abuts against the recess 521, and the pinching lever 22 is retracted, not pinching the infusion branch 91. During tube flushing, the third gear 421 drives the fourth gear 51 to rotate, the cam 52 rotates synchronously with the fourth gear 51, the cam 52 forces the clipping lever 22 to move out of the concave portion 521, and the clipping lever 22 moves forward to clip the infusion branch tube 91. None of the pinching lever 22 enters the recess 521 for a while thereafter, thereby continuously pinching off the infusion manifold 91.
After the pinching driving mechanism 5 rotates once, the concave portion 521 aligns with the pinching lever 22 again, and the pinching lever 22 is retracted by the spring 23 to abut against the concave portion 521. Therefore, the present invention preferably has one pipe flushing cycle of one rotation of the pinching closing driving mechanism 5. That is, the motor 31 is started until the clamping driving mechanism 5 rotates for one circle, and the tube flushing driving mechanism 4 drives the syringe 8 to infuse a proper amount of tube flushing liquid in the period.
The automatic tube flushing device for enteral nutrient solution infusion is ingenious in specific structure, can realize clamping of the infusion branch tube 91 and driving of the injector 8 only by driving of one motor 31, and is simple in structure and low in cost. It should be noted that the automatic tube flusher for enteral feeding solution infusion constructed as described above has a short period of time in which a very small amount of flushing solution may flow back in the infusion branch tube 91 due to the movement of the clamping rod 22 out of the recess 521, but this does not have an adverse effect.
The syringe 8 should be slowly pressed by the washpipe drive mechanism 4, and therefore the second gear 421 and the first gear 32 should form a reduction gear pair to slow down the pressing speed of the washpipe drive mechanism 4. The pinch-off drive 5 should also be rotated relatively slowly to allow sufficient washpipe cycle time to ensure adequate washpipe fluid input, and therefore it is preferred that the fourth gear 51 and the third gear 422 form a reduction gear pair to slow the rotational speed of the pinch-off drive 5.
The guide structure 43 is used to limit the rotation and translation of the screw 41 and to guide the screw 41 up and down. The specific structure of the guiding structure 43 may be various, for example, as shown in fig. 2, the guiding structure 43 includes a guiding slide 432 and a guiding bar 431 having a guiding groove, the guiding bar 431 is connected with the housing 6, the guiding slide 432 is matched with the guiding groove, and the guiding slide 432 is connected with the screw 41. The guide slot may be a dovetail slot and the guide slide 432 may be correspondingly dovetail shaped.
The specific structure of the syringe fixing structure 1 may be as follows: the syringe fixing structure 1 comprises a fixed cylinder 11 and a bottom plate 12, wherein the fixed cylinder 11 is vertically arranged and is connected with the machine shell 6, the bottom plate 12 is connected at the lower end of the fixed cylinder 11, and a through hole 121 is formed in the bottom plate 12. The fixed barrel 11 should be compatible with the syringe 8 and the syringe 8 should not be significantly shaken after insertion into the fixed barrel 11.
The specific structure of the pressing structure 44 may be as follows: the pressing structure 44 includes a beam 441 and a pressing rod 442, the beam 441 is connected to the pressing rod 442, and the pressing rod 442 is vertically positioned right above the syringe fixing structure 1 and is screw-connected to the beam 441. When the pressing rod 442 is rotated and moved upward, the syringe 8 can be loaded into the syringe fixing structure 1. When the pressing rod 442 is rotated and moved downward, the pressing rod 442 is pressed against the syringe 8.
Claims (6)
1. Automatic tube flushing device for enteral nutrient solution infusion is characterized in that: the device comprises an injector fixing structure (1), a clamping mechanism (2), a power device (3), a flushing pipe driving mechanism (4) and a clamping driving mechanism (5), wherein the injector fixing structure (1) can fix an injector (8), the power device (3) can drive the clamping mechanism (2) and the flushing pipe driving mechanism (4) to act, the clamping mechanism (2) can clamp a nutrient solution infusion pipe (9) to stop nutrient solution infusion, and the flushing pipe driving mechanism (4) can drive the injector (8) to inject flushing pipe liquid into the nutrient solution infusion pipe (9);
also comprises a casing (6); the injector fixing structure (1) is connected with the shell (6), and the injector fixing structure (1) can fix the injector (8) in the vertical direction; the power device (3) comprises a motor (31) and a first gear (32), the motor (31) is arranged on the machine shell (6), and the first gear (32) is connected with the motor (31);
the tube punching driving mechanism (4) comprises a tube punching driving sleeve (42), a screw rod (41), a guide structure (43) and a pressing structure (44), the screw rod (41) is vertically arranged, the guide structure (43) is connected with the machine shell (6), the guide structure (43) can guide the screw rod (41) to move up and down, the tube punching driving sleeve (42) is installed on the machine shell (6), the machine shell (6) limits the movement of the tube punching driving sleeve (42), the tube punching driving sleeve (42) is connected with the screw rod (41) to form a screw rod nut mechanism, a second gear (421) and a third gear (422) are arranged on the tube punching driving sleeve (42), and the pressing structure (44) is correspondingly arranged with the injector fixing structure (1) and is connected with the screw rod (41); the second gear (421) is meshed with the first gear (32);
the clamping driving mechanism (5) is installed on the machine shell (6), the clamping driving mechanism (5) comprises a fourth gear (51) and a cam (52), the fourth gear (51) and the cam (52) are coaxially arranged and connected, the fourth gear (51) is meshed with a third gear (422), the cam (52) is circular with a concave part (521), and the concave part (521) is in smooth transition with the rest part of the cam (52);
the clamping mechanism (2) comprises a clamping mechanism sleeve (21), a clamping rod (22) and a spring (23), the clamping mechanism sleeve (21) is connected with the machine shell (6), an infusion tube groove (211) is formed in the clamping mechanism sleeve (21), the clamping rod (22) is inserted into the clamping mechanism sleeve (21) and matched with the clamping mechanism sleeve (21), and the spring (23) supports the clamping rod (22) to enable the clamping rod (22) to abut against the cam (52); when the clamping and closing rod (22) abuts against the concave part (521), the clamping and closing rod (22) retracts; when the clamping and closing rod (22) abuts against the rest position of the cam (52), the clamping and closing rod (22) extends out to clamp and close the nutrient solution infusion tube (9) positioned in the infusion tube groove (211);
one circle of rotation of the clamping driving mechanism (5) is a pipe washing period.
2. The automatic tube flusher for enteral feeding solution infusion of claim 1, wherein: the second gear (421) and the first gear (32) form a reduction gear pair, and the fourth gear (51) and the third gear (422) form a reduction gear pair.
3. The automatic tube flusher for enteral feeding solution infusion of claim 1, wherein: the guide structure (43) comprises a guide sliding block (432) and a guide strip (431) with a guide groove, the guide strip (431) is connected with the machine shell (6), the guide sliding block (432) is matched with the guide groove, and the guide sliding block (432) is connected with the screw rod (41).
4. The automatic tube flusher for enteral feeding solution infusion of claim 1, wherein: the injector fixing structure (1) comprises a fixing barrel (11) and a bottom plate (12), the fixing barrel (11) is vertically arranged and is connected with the machine shell (6), the bottom plate (12) is connected to the lower end of the fixing barrel (11), and a through hole (121) is formed in the bottom plate (12).
5. The automatic tube flusher for enteral feeding solution infusion of claim 1, wherein: the pressing structure (44) comprises a cross beam (441) and a pressing rod (442), the cross beam (441) is connected with the pressing rod (442), and the pressing rod (442) is vertically arranged right above the injector fixing structure (1) and is in threaded connection with the cross beam (441).
6. The automatic tube flusher for enteral feeding solution infusion according to any one of claims 1 to 5, characterized in that: the device comprises a controller (7), wherein the controller (7) is installed on a machine shell (6), and the controller (7) can time and control the power device (3) to start and stop according to time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110366650.8A CN113083813B (en) | 2021-04-06 | 2021-04-06 | Automatic tube flushing device for enteral nutrient solution infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110366650.8A CN113083813B (en) | 2021-04-06 | 2021-04-06 | Automatic tube flushing device for enteral nutrient solution infusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113083813A CN113083813A (en) | 2021-07-09 |
| CN113083813B true CN113083813B (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110366650.8A Active CN113083813B (en) | 2021-04-06 | 2021-04-06 | Automatic tube flushing device for enteral nutrient solution infusion |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8262645B2 (en) * | 2007-11-21 | 2012-09-11 | Actuated Medical, Inc. | Devices for clearing blockages in in-situ artificial lumens |
| CN204798513U (en) * | 2015-05-06 | 2015-11-25 | 徐秋霞 | Automatic ware of injecting of angiocardiography |
| CN206120845U (en) * | 2016-06-08 | 2017-04-26 | 镇江市第四人民医院 | Vein is kept somewhere needle and is assisted towards tube sealing device |
| CN107432965A (en) * | 2017-09-05 | 2017-12-05 | 杨斗华 | A kind of Portable single-channel micro-injection pump |
| CN209967093U (en) * | 2019-04-11 | 2020-01-21 | 辽宁省肿瘤医院 | Enteral nutrition tube flushing device |
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2021
- 2021-04-06 CN CN202110366650.8A patent/CN113083813B/en active Active
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