CN111420172B - Injection device convenient for indwelling needle tube washing operation and using method thereof - Google Patents
Injection device convenient for indwelling needle tube washing operation and using method thereof Download PDFInfo
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- CN111420172B CN111420172B CN202010330913.5A CN202010330913A CN111420172B CN 111420172 B CN111420172 B CN 111420172B CN 202010330913 A CN202010330913 A CN 202010330913A CN 111420172 B CN111420172 B CN 111420172B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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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
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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
- A61M2005/1401—Functional features
- A61M2005/1402—Priming
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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
- A61M2005/1401—Functional features
- A61M2005/1403—Flushing or purging
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
An injection device convenient for the tube-washing operation of an indwelling needle comprises an injector and a pulse head, wherein the pulse head comprises a shell with a cylindrical cavity and a rotating wheel arranged in the cavity, and the upper part of the shell is provided with a liquid inlet and a liquid outlet; a transverse clapboard is arranged in the cavity, and a shaft hole is formed in the middle of the transverse clapboard; the rotating wheel comprises an upper impeller and a lower rotating disc, the upper impeller and the lower rotating disc are connected through a rotating shaft, the rotating shaft is arranged in a shaft hole, and a first liquid outlet hole is formed in the position, close to the outer edge, of the diaphragm plate; a second liquid outlet hole is formed in the position, close to the outer edge, of the lower rotary table; the invention simplifies the pulse type tube flushing operation, can complete the pulse type tube flushing operation by continuously pressing the injector, and has low requirement on the experience of an operator; the labor intensity of an operator is reduced, the pulse frequency which is stable and higher than the manual operation frequency can be provided, the flow velocity of liquid in the flushed pipe is relatively stable during flushing, the effect of inducing vortex in the flushed pipe is good, the overall flushing effect is good, and the device has a good application prospect.
Description
Technical Field
The invention belongs to the technical field of remaining needles, and particularly relates to an injection device convenient for a tube washing operation of a remaining needle and a using method thereof.
Background
With the continuous development of nursing science, the vein indwelling needle is widely applied in clinical work, the flushing and sealing pipe is one of important links for preventing complications during indwelling of the catheter and ensuring normal use of the catheter, and the flushing pipe of the indwelling needle aims to flush residual liquid medicine in the catheter into the blood vessel and clear away the liquid medicine accumulated in the catheter, so that the risk of mutual contact of incompatible medicines is reduced, and the occurrence of the complications is prevented. The injection is a suspension composed of protein, glucose, fat, various vitamins, minerals and other components, and has large liquid molecules, is relatively viscous, and the input speed is usually slower than that of the conventional medicines, so that the pipeline blockage is easily caused.
The prior direct-flushing type flushing pipe can not thoroughly and effectively clean the catheter, while the pulse type flushing pipe can effectively adopt a flushing method of stopping the flushing pipe by pushing once, so that the flushing liquid generates positive pressure, negative pressure or pressure difference in a catheter cavity to form vortex, the comprehensive and uniform flushing on the catheter wall is increased, the residual medicine attached to the catheter wall can be effectively flushed clean, and the occurrence of blockage is effectively reduced.
For example, tests have shown that under the same conditions, a pulse tube-punching method (pressing frequency of about 1 time/s) with one push and one stop can remove 90% of the protein on the wall of the catheter in 8 seconds; by adopting a continuous low-flow-rate tube flushing method, 67% of protein can be removed after 5 seconds of pushing; after the catheter is pushed for 10 seconds, 49% of protein on the wall of the catheter can be removed, and obviously, the pulse catheter flushing method has better effect.
For a pulsed washpipe, the higher the frequency of the compressions and the higher the frequency of the vortices occurring, the better the washpipe effect is relatively. However, due to the limitation of manual operation, the pressing frequency generally cannot reach 2 times/s, frequent pressing easily fatigues the operator, it is sometimes difficult for inexperienced operators to grasp the skill of the pulse type washing pipe, and there is a possibility that the operator may mistakenly adopt the direct washing pipe due to carelessness.
In addition, the pulse type flushing has requirements on the pressing force of the injector, the pressing pulse can be formed only when a certain pressing force is reached, and the pressing force is not uniformly specified by medical students at present and is controlled by experience. For different operators, even the same operator operates at different time, the pressing force on the syringe is usually different when the syringe is flushed in each pulse, which may cause inconsistent and even unqualified flushing effect.
Disclosure of Invention
The invention aims to provide an injection device which can simplify the pulse type tube flushing operation, reduce the labor intensity and can complete the pulse type tube flushing operation by continuously pressing an injector.
Another object of the present invention is to provide an injection device that can increase the pulse frequency of a pulsed washpipe, and the flow rate during washpipe is relatively stable, and increase the washpipe effect.
In order to solve the technical problem, the invention discloses an injection device convenient for the tube-washing operation of an indwelling needle, which comprises an injector and a pulse head, wherein the pulse head is hermetically connected with an injection head of the injector, the pulse head comprises a shell with a cylindrical cavity and a rotating wheel arranged in the cavity, a liquid inlet used for being connected with the injection head of the injector is arranged at the upper part of the shell, and a liquid outlet used for being connected with a tube-washing connector of the indwelling needle is arranged at the lower part of the shell;
a transverse clapboard is arranged in the cavity to divide the cavity into an upper cavity and a lower cavity, and a shaft hole is formed in the middle of the transverse clapboard;
the rotating wheel comprises an upper impeller and a lower rotating disc, the upper impeller and the lower rotating disc are connected through a rotating shaft, the rotating shaft is arranged in a shaft hole, the upper impeller is arranged in the upper cavity, the lower rotating disc is arranged in the lower cavity, and the upper impeller and the lower rotating disc rotate synchronously; the upper impeller is provided with blades, and when liquid in the upper chamber flows, the upper impeller is pushed to rotate, so that the lower rotating disc is driven to rotate.
A plurality of first liquid outlet holes communicated with the upper cavity and the lower cavity are formed in the positions, close to the outer edges, of the transverse partition plates; a plurality of second liquid outlet holes are formed in the position, close to the outer edge, of the lower rotary disc.
Preferably, a sliding groove is radially formed in one side wall, close to the rotating shaft, of the second liquid outlet hole, a flow regulating sheet is arranged in the sliding groove, the flow regulating sheet is connected with the bottom of the sliding groove through a spring, and the length of the flow regulating sheet is smaller than the depth of the sliding groove.
Preferably, when the lower rotary table is static, the flow regulating sheet does not extend out of the sliding groove; when the lower rotary table rotates, the flow adjusting sheet moves towards one side of the far away rotary shaft under the action of centrifugal force, and when the rotating speed of the lower rotary table is larger, the flow adjusting sheet extends out of the sliding groove, part of the second liquid outlet holes are blocked, the flow is reduced, and therefore the flow adjustment in the pipe flushing process is achieved.
Preferably, the density of the material of the flow adjusting sheet is greater than that of the material of the lower rotary table, so that the center of gravity of the lower rotary table is not overlapped with the center of the lower rotary table, and the lower rotary table continuously rotates due to inertia when rotating.
Preferably, the vertical distance between the center of the second liquid outlet hole and the rotating shaft is the same as the vertical distance between the liquid outlet hole and the rotating shaft, so that when the rotating wheel rotates, the second liquid outlet hole can be over against the liquid outlet hole, and the lower cavity is temporarily communicated with the liquid outlet hole.
Preferably, the number of the second liquid outlet holes is 1, and the second liquid outlet holes are arc-shaped long holes.
Preferably, the syringe contains a flushing fluid.
The utility model provides an injection apparatus's application method convenient to keep somewhere needle wash pipe operation, when beginning wash pipe operation, wave injection apparatus earlier gently and make the lower carousel begin to rotate, then promote the syringe and make the flush fluid flow from the liquid outlet, the lower carousel rotates the in-process, when the second goes out the liquid hole rotatory to with the liquid outlet phase coincidence position, the flow of liquid outlet is great, go out the liquid hole rotation when not coinciding the position with the liquid outlet when the second, the flow of liquid outlet is less or the flow is zero, the lower carousel rotates once, accomplish a pulse flushing operation, the lower carousel rotates sooner, the pulse flushing frequency is higher, the existence of flow control piece makes the rotational speed of lower carousel be in a reasonable interval.
Preferably, the operator continues to press the syringe during the flushing operation.
Preferably, the propelling amount of the flushing liquid is 0.3-1.0ml when the lower turntable rotates once during the pipe flushing operation, namely, one pulse flushing operation is completed.
The injection device convenient for the indwelling needle tube flushing operation and the use method thereof have at least the following advantages:
1. the pulse type tube flushing operation is simplified, the pulse type tube flushing operation can be completed by continuously pressing the injector, and the requirement on the experience of an operator is low; the labor intensity of operators is reduced, and the method has a good application prospect.
2. Due to the existence of the flow regulating sheet, the rotating speed, the pulse frequency and the flow of the liquid outlet of the rotating wheel are always kept in a reasonable range, the difference of the pulse type washing pipe operation effects of different operators is greatly reduced, and the consistency is improved.
3. Can provide stable pulse frequency higher than the manual operation frequency, and the flow velocity of the liquid in the washed pipe is relatively stable during washing the pipe, the eddy current in the washed pipe is induced to have good effect, and the whole washing pipe has good effect.
4. Compared with a common injector, the injection device has low cost improvement range and can be used as disposable consumables.
Drawings
FIG. 1 is a schematic view showing the structure of an injection device for facilitating the operation of washing a tube of an indwelling needle;
fig. 2 is a schematic structural view of the rotary wheel in fig. 1.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
An injection device convenient for the tube-washing operation of an indwelling needle comprises a syringe 1 and a pulse head, wherein the pulse head is hermetically connected with an injection head of the syringe and comprises a shell 2 with a cylindrical cavity and a rotating wheel 3 arranged in the cavity, the upper part of the shell 2 is provided with a liquid inlet 210 connected with the injection head 110 of the syringe, and the lower part of the shell is provided with a liquid outlet 220 connected with the tube-washing connector of the indwelling needle;
a diaphragm plate 4 is arranged in the cavity to divide the cavity into an upper cavity and a lower cavity, and a shaft hole 410 is formed in the middle of the diaphragm plate;
the rotating wheel comprises an upper impeller 310 and a lower rotating disc 320, the upper impeller and the lower rotating disc are connected through a rotating shaft 330, the rotating shaft is arranged in a shaft hole, the upper impeller is arranged in the upper cavity, the lower rotating disc is arranged in the lower cavity, and the upper impeller and the lower rotating disc rotate synchronously; the upper impeller is provided with blades 311, and when the liquid in the upper chamber flows, the upper impeller is pushed to rotate, so that the lower rotating disc is driven to rotate. In order to ensure that the rotating shaft can smoothly rotate in the shaft hole, sealing agents such as vaseline and the like can be coated on the rotating shaft or in the shaft hole so as to ensure the lubricating and sealing effects.
A plurality of first liquid outlet holes 5 communicating the upper cavity with the lower cavity are formed in the position, close to the outer edge, of the transverse partition plate, and in the embodiment, the number of the first liquid outlet holes is 1; a plurality of second liquid outlet holes 6 are formed in the position, close to the outer edge, of the lower rotary disc.
A sliding groove 710 is radially arranged on one side wall of the second liquid outlet hole close to the rotating shaft, a flow adjusting sheet 7 is arranged in the sliding groove, the flow adjusting sheet is connected with the bottom of the sliding groove through a spring 720, and the length of the flow adjusting sheet is smaller than the depth of the sliding groove.
When the lower rotary table is static, the flow regulating sheet does not extend out of the sliding groove; when the lower rotary table rotates, the flow adjusting sheet moves to one side far away from the rotating shaft under the action of centrifugal force, and when the rotating speed of the lower rotary table is higher, the flow adjusting sheet extends out of the sliding groove to block part of the second liquid outlet holes and reduce the flow, so that the flow adjustment in the pipe flushing process is realized; the minimum rotational speed required for the flow flap to extend out of the chute can be adjusted by adjusting the coefficient of stiffness of the spring or the mass of the flow flap.
When the pressing force of an operator is too large, the pressure of the lower cavity is too large, when the second liquid outlet hole rotates to the position coincident with the liquid outlet, the flow passing through the second liquid outlet hole and the liquid outlet is obviously increased, so that the flow velocity of liquid in the upper cavity is increased, the rotating speed of the upper impeller is increased, the rotating speed of the lower turntable is also increased, the centrifugal force borne by the flow adjusting sheet is increased, the flow adjusting sheet extends out of the chute and blocks part of the second liquid outlet hole, the overflowing area of the liquid passing through the second liquid outlet hole is reduced, the flow of the second liquid outlet hole and the liquid outlet is reduced, the flow velocity of the liquid in the upper cavity is reduced due to the reduction of the flow, so that the rotating speed of the upper impeller is gradually reduced, the centrifugal force borne by the flow adjusting sheet is reduced, the flow adjusting sheet gradually retracts into the chute, and when the pressing force of the operator is always too large and the force is stable, the rotating speed of the rotating wheel can keep relatively stable (or fluctuate within a certain range), the blocking position of the flow regulating sheet can be stabilized at a reasonable position (or fluctuate within a certain range), so that the stable output of the injection device is realized during the pulse flushing operation.
If the pressing force of the operator is too small (which generally cannot happen), the rotating speed of the rotating wheel is too slow, so that the rotating speed of the rotating wheel is too slow or finally stops at a position where the second liquid outlet hole is not coincident with the liquid outlet hole (the liquid flowing channel is closed), and the operator is difficult to push the injector, so that the pressing force has to be increased.
The material density of the flow adjusting sheet is greater than that of the lower rotary table, so that the center of gravity of the lower rotary table is not overlapped with the center (can be regarded as an eccentric wheel), and the lower rotary table continuously rotates due to inertia when rotating. Therefore, when the second liquid outlet hole of the lower rotary disc is not coincident with the position of the liquid outlet hole, the lower rotary disc can still keep rotating.
The perpendicular distance between the center of the second liquid outlet hole and the rotating shaft is the same as the perpendicular distance between the liquid outlet hole and the rotating shaft, so that when the rotating wheel rotates, the second liquid outlet hole can be just opposite to the liquid outlet hole, and the lower cavity and the liquid outlet hole are temporarily communicated.
The second goes out liquid hole quantity and is 1, and the second goes out the liquid hole and be the arc slot hole. The arc-shaped long hole enables the second liquid outlet hole and the liquid outlet to form a liquid circulation channel for communication and can be kept for a period of time, so that the flushing liquid can be smoothly pushed and the flushing pipe can be completed within a certain time.
The syringe contains a flushing fluid.
Example 2
The utility model provides an injection apparatus's application method convenient to keep somewhere needle wash pipe operation, when beginning wash pipe operation, wave injection apparatus earlier gently and make the lower carousel begin to rotate, then promote the syringe and make the flush fluid flow from the liquid outlet, the lower carousel rotates the in-process, when the second goes out the liquid hole rotatory to with the liquid outlet phase coincidence position, the flow of liquid outlet is great, when the second goes out the liquid hole rotatory to the phase coincidence position with the liquid outlet, the flow of liquid outlet is less or the flow is zero, the lower carousel rotates once, experience the pressure and the velocity of flow change cycle of a flush fluid in the pipe, thereby accomplish a pulse flushing operation, the lower carousel rotates sooner, the pulse flushing frequency is higher, the lower carousel rotates too soon and leads to the propulsion reduction of flush fluid, because the existence of flow control piece makes the rotational speed of lower carousel be in a reasonable interval.
During the tube flushing operation, the operator keeps pressing the injector continuously. The operator does not need to adopt a flushing method of stopping the flushing operation once, thereby greatly simplifying the operation.
Example 3
The number of the second liquid outlet holes can be a plurality (such as 2-4) which are uniformly or symmetrically distributed on the same circumference, and the pulse times with the same number as that of the second liquid outlet holes can be formed when the lower turntable rotates 360 degrees;
of course, as the number of the second liquid outlet holes is increased, the number of the flow regulating sheets is also increased, which causes corresponding increase of difficulty and cost of the manufacturing process.
Example 4
At present, the impelling amount of the flushing liquid in the pulse flushing operation has no clear industrial standard, in order to improve the flushing efficiency and shorten the flushing time, the operation specification of part of hospitals can provide some instructive suggestions (for example, 1ml of impelling amount of the flushing liquid in each pulse flushing, 4 times of continuous thrusting and then continuous giving of 3ml of constant infusion), so that the flushing time is saved, but the flushing effect is to be verified.
Through reasonable proportion setting of the length and the number of the second liquid outlet holes and the inner diameters of the liquid outlets, when the washing pipe is operated, the lower rotary table rotates once, namely, the washing liquid propelling quantity is 0.3-1.0ml when the pulse washing operation is completed once (when the number of the second liquid outlet holes is multiple, the lower rotary table rotates 360 degrees to form a calculation period). For example, the total volume of the washing liquid is 7ml, the propelling volume of the washing liquid for each pulse washing is 0.5ml (in practice, the propelling volume of 0.5-0.6ml is a preferable value, the tube washing effect is achieved, and the total time of the tube washing is in a preferable range), the average rotating speed of the lower rotating disc during washing is about 1r/s, the syringe is continuously pressed, the whole tube washing process can be easily completed within 20s including the forward shaking time (the injection device is gently shaken before the tube washing), at least 14 pulses can be formed in the tube washing process, the tube washing effect is much better than that of the tube washing operation guidance of part of departments, the difference of the whole tube washing time is not large or even shorter, the operation is simpler and more convenient, and the technical requirements for operators are relatively lower.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (7)
1. An injection device convenient for the tube-washing operation of an indwelling needle is characterized by comprising an injector and a pulse head, wherein the pulse head is hermetically connected with an injection head of the injector and comprises a shell with a cylindrical cavity and a rotating wheel arranged in the cavity, a liquid inlet used for being connected with the injection head of the injector is arranged at the upper part of the shell, and a liquid outlet used for being connected with a tube-washing connector of the indwelling needle is arranged at the lower part of the shell;
a transverse clapboard is arranged in the cavity to divide the cavity into an upper cavity and a lower cavity, and a shaft hole is formed in the middle of the transverse clapboard;
the rotating wheel comprises an upper impeller and a lower rotating disc, the upper impeller and the lower rotating disc are connected through a rotating shaft, the rotating shaft is arranged in a shaft hole, the upper impeller is arranged in the upper cavity, the lower rotating disc is arranged in the lower cavity, and the upper impeller and the lower rotating disc rotate synchronously; the upper impeller is provided with blades, and when liquid in the upper chamber flows, the upper impeller is pushed to rotate, so that the lower rotating disc is driven to rotate;
a plurality of first liquid outlet holes communicated with the upper cavity and the lower cavity are formed in the positions, close to the outer edges, of the transverse partition plates; a plurality of second liquid outlet holes are formed in the position, close to the outer edge, of the lower rotary table;
and a sliding groove is radially arranged on one side wall of the second liquid outlet hole close to the rotating shaft, a flow regulating sheet is arranged in the sliding groove, and the flow regulating sheet is connected with the bottom of the sliding groove through a spring.
2. The injection device facilitating an indwelling needle flushing procedure according to claim 1, wherein the length of the flow regulating blade is less than the chute depth.
3. The injection device facilitating the indwelling needle cannula punching operation according to claim 1, wherein the flow control blade does not extend out of the chute when the lower turntable is stationary; when the lower rotary table rotates, the flow adjusting sheet moves towards one side of the far away rotary shaft under the action of centrifugal force, and when the rotating speed of the lower rotary table is larger, the flow adjusting sheet extends out of the sliding groove, part of the second liquid outlet holes are blocked, the flow is reduced, and therefore the flow adjustment in the pipe flushing process is achieved.
4. The injection device for facilitating the indwelling needle cannula punch procedure of claim 3, wherein the flow control flap is of a higher density than the lower dial, so that the center of gravity of the lower dial does not coincide with the center of gravity of the lower dial, and so that the lower dial continues to rotate due to inertia as it rotates.
5. The device of claim 4, wherein the center of the second exit hole is spaced from the axis at the same vertical distance as the exit hole is spaced from the axis, such that the second exit hole faces the exit hole when the wheel is rotated, thereby temporarily connecting the lower chamber to the exit hole.
6. The injection device facilitating the catheter-punching operation of the indwelling needle according to claim 5, wherein the number of the second exit holes is 1, and the second exit holes are arc-shaped long holes.
7. The injection device for facilitating the indwelling needle flush procedure according to claim 1, wherein the syringe contains a flushing fluid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010330913.5A CN111420172B (en) | 2020-04-24 | 2020-04-24 | Injection device convenient for indwelling needle tube washing operation and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010330913.5A CN111420172B (en) | 2020-04-24 | 2020-04-24 | Injection device convenient for indwelling needle tube washing operation and using method thereof |
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| CN111420172B true CN111420172B (en) | 2022-03-15 |
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| WO2013025826A1 (en) * | 2011-08-17 | 2013-02-21 | Novita Therapeutics, Llc | Blood pump systems and methods |
| CN104524663A (en) * | 2014-12-25 | 2015-04-22 | 郭亮 | Disposable thrombus filter connector |
| CN207024380U (en) * | 2017-02-28 | 2018-02-23 | 孔羽 | A kind of pulsed malleation conduit flusher |
| CN108096688A (en) * | 2017-12-11 | 2018-06-01 | 宜兴市人民医院 | A kind of drainage system |
| WO2019147977A1 (en) * | 2018-01-28 | 2019-08-01 | Becton, Dickinson And Company | Pulsatile or resonating flush syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SI2056903T1 (en) * | 2006-08-31 | 2019-02-28 | Meridian Medical Technologies, Inc. | Vortex feature for drug delivery system |
| WO2018229117A1 (en) * | 2017-06-13 | 2018-12-20 | Merz Pharma Gmbh & Co. Kgaa | Mixing nozzle, application device, kit and method using the mixing nozzle or application device |
| CN209451052U (en) * | 2018-10-10 | 2019-10-01 | 南京脑科医院 | The safety-type infusion protection device of psychiatric department |
| CN110787339B (en) * | 2019-12-05 | 2024-09-24 | 中国人民解放军陆军军医大学第二附属医院 | Prevent venous return needle of keeping somewhere |
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2020
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013025826A1 (en) * | 2011-08-17 | 2013-02-21 | Novita Therapeutics, Llc | Blood pump systems and methods |
| CN104524663A (en) * | 2014-12-25 | 2015-04-22 | 郭亮 | Disposable thrombus filter connector |
| CN207024380U (en) * | 2017-02-28 | 2018-02-23 | 孔羽 | A kind of pulsed malleation conduit flusher |
| CN108096688A (en) * | 2017-12-11 | 2018-06-01 | 宜兴市人民医院 | A kind of drainage system |
| WO2019147977A1 (en) * | 2018-01-28 | 2019-08-01 | Becton, Dickinson And Company | Pulsatile or resonating flush syringe |
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| CN111420172A (en) | 2020-07-17 |
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