CN113144320B - Automatic hemostatic hemodialysis remaining needle and use method thereof - Google Patents
Automatic hemostatic hemodialysis remaining needle and use method thereof Download PDFInfo
- Publication number
- CN113144320B CN113144320B CN202110559364.3A CN202110559364A CN113144320B CN 113144320 B CN113144320 B CN 113144320B CN 202110559364 A CN202110559364 A CN 202110559364A CN 113144320 B CN113144320 B CN 113144320B
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- China
- Prior art keywords
- clamping tube
- flow stopping
- catheter seat
- stopping clamp
- spiral flow
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- 238000001631 haemodialysis Methods 0.000 title claims abstract description 20
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 20
- 230000002439 hemostatic effect Effects 0.000 title claims description 8
- 238000000034 method Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 230000035515 penetration Effects 0.000 claims abstract description 10
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 5
- 238000001802 infusion Methods 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 239000008280 blood Substances 0.000 description 7
- 210000004369 blood Anatomy 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000502 dialysis Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3659—Cannulae pertaining to extracorporeal circulation
- A61M1/3661—Cannulae pertaining to extracorporeal circulation for haemodialysis
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
- A61M39/283—Screw clamps
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Cardiology (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses an automatic bleeding stopping hemodialysis remaining needle and a use method thereof, comprising the following steps: a catheter holder; the clamping tube is arranged in the catheter seat and is not completely covered by the catheter seat, the catheter seat and the clamping tube are coaxial, a channel for the penetration or the penetration of a steel needle is coaxially formed in the catheter seat and the clamping tube, and the clamping tube is an elastic silicone tube and can be closed and opened; the spiral flow stopping clamp is sleeved outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, the spiral flow stopping clamp can be closed and opened, the spiral flow stopping clamp is opened outwards when an external force is applied, the clamping tube is opened outwards by utilizing self elasticity, the channel is opened, and the spiral flow stopping clamp extrudes the clamping tube and drives the clamping tube to be closed inwards or contracted when no external force acts, so that the channel is closed. The invention realizes the opening or closing of the channel by applying the pulling force to the spiral flow stopping clamp, solves the problem of difficult flow stopping in the prior art, has convenient operation, high working efficiency and simple structure, and is suitable for industrialized popularization and use.
Description
Technical Field
The invention belongs to the technical field of flow stopping indwelling needles, and particularly relates to an automatic flow stopping hemodialysis indwelling needle and a using method thereof.
Background
The existing market available indwelling needle for dialysis has the problem that blood is inconvenient in terms of flow stopping, the operation is too complex, fingers are needed to pinch the flow stopping, the flow stopping is needed to be stopped by means of a hemostatic forceps, and more risks exist:
1. If the pressure of the finger is small, the clamping tube may be in an unclosed state, which may cause blood leakage;
2. Hemostats are metallic items that can damage the holding tube during handling and cause blood leakage as a result of breakage during treatment.
To avoid these inconveniences and risks, we have made some improvements to this product.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an automatic hemostatic liquid dialysis indwelling needle and a use method thereof.
In order to achieve the above purpose and achieve the above technical effects, the invention adopts the following technical scheme:
An automatic hemostatic hemodialysis indwelling needle comprising:
The catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate into or out of the catheter seat;
The clamping tube is arranged in the catheter seat and is not completely covered by the catheter seat, the catheter seat and the clamping tube are coaxial, channels for the penetration or the penetration of the steel needle are coaxially formed in the catheter seat and the clamping tube, and the clamping tube has elasticity enough to perform physical deformation;
the spiral flow stopping clamp is arranged outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, has elasticity enough to perform physical deformation, can be closed and opened, can be opened outwards under the action of external force, and can be opened outwards by releasing the clamping tube, so that the clamping tube is opened by utilizing the elasticity of the clamping tube, and when no external force acts, the clamping tube is extruded by the spiral flow stopping clamp and is driven to be closed inwards, so that the channel is closed.
Furthermore, an inclined plane matched with the inner wall of the spiral flow stopping clamp is arranged on the outer side of the upper part of the catheter seat.
Further, the clamping tube is an elastic silicone tube, can be closed and opened, is arranged at the middle part or near the middle part of the inside of the catheter seat, and is converged into a point with the middle part of the spiral flow stopping clamp when the channel is closed.
Further, the outside of the lower part of the spiral flow stopping clamp is provided with threads, and the rubber plug plugging component or the screw cap is detachably arranged on the spiral flow stopping clamp through the threads.
The invention discloses a use method of an automatic bleeding-stopping hemodialysis remaining needle, which comprises the following steps:
Before use, the spiral flow stopping clamp is under the action of the downward pulling force of the rubber plug plugging assembly, the spiral flow stopping clamp is kept in an open state, the clamping pipe is elastically opened by the clamping pipe, the channel is opened, and the steel needle penetrates through the channel to puncture;
After the puncture is completed, the steel needle is pulled out, the rubber plug sealing component is removed in a anticlockwise rotation mode, at the moment, the spiral flow stopping clamp loses the downward pulling force effect of the rubber plug sealing component, the spiral flow stopping clamp is closed, the clamping tube is closed by the extrusion force of the spiral flow stopping clamp, and the channel is closed, so that blood is prevented from flowing out;
During treatment, one end of the hemodialysis pipeline is connected to the lower part of the indwelling needle, the screw cap on the hemodialysis pipeline is screwed down along the screw thread on the outer side of the lower part of the screw flow stopping clamp clockwise, the screw cap exerts a downward pulling force on the screw flow stopping clamp, the screw flow stopping clamp is opened, the clamping pipe is opened by utilizing self elasticity, and the channel is opened and blood circulates.
Compared with the prior art, the invention has the beneficial effects that:
The invention discloses an automatic bleeding stopping hemodialysis remaining needle and a use method thereof, comprising the following steps: the catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate into or out of the catheter seat; the clamping tube is arranged in the catheter seat and is not completely covered by the catheter seat, the catheter seat and the clamping tube are coaxial, a channel for the penetration or the penetration of a steel needle is coaxially formed in the catheter seat and the clamping tube, the clamping tube has elasticity enough for physical deformation, and the clamping tube is an elastic silicone tube, can be closed and opened or can be contracted and expanded; the spiral flow stopping clamp is arranged outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, a part of the clamping tube is exposed outside, the spiral flow stopping clamp has elasticity enough to perform physical deformation and can be closed and opened or can be understood to be contracted and expanded, the spiral flow stopping clamp can be opened outwards under the action of external force, the clamping tube is released, the clamping tube is opened by utilizing the elasticity of the clamping tube, a channel is opened, and the spiral flow stopping clamp extrudes the clamping tube and drives the clamping tube to contract and close when no external force acts, so that the channel is closed. According to the automatic flow stopping hemodialysis remaining needle and the use method thereof, when the spiral flow stopping clamp is subjected to external tension, the channel is opened and is cooperated with the clamping tube to open, and when no external force acts, the spiral flow stopping clamp extrudes the clamping tube and drives the clamping tube to shrink and close, so that the channel is closed, the opening or closing of the channel can be realized by applying tension to the spiral flow stopping clamp, the problem that the remaining needle is difficult to stop flow in the prior art is solved, the whole structure is simple, the operation is convenient, the working efficiency is high, and the automatic flow stopping hemodialysis remaining needle is suitable for industrial popularization and use.
Drawings
FIG. 1 is a schematic view of the structure of the indwelling needle according to the present invention when not in use;
FIG. 2 is a schematic view of the structure of the present invention with the indwelling needle passageway closed;
FIG. 3 is a schematic perspective view of the screw stop clip of the present invention when closed;
Fig. 4 is a schematic view of the structure of the indwelling needle according to the present invention when hemodialysis is performed.
Detailed Description
The following embodiments of the present invention are described in detail so that the advantages and features of the present invention may be more readily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of the present invention.
As shown in fig. 1-4, an automatic hemostatic hemodialysis indwelling needle comprising:
a catheter seat 1 for supporting other components of the indwelling needle and allowing the steel needle 2 to pass in or out;
the clamping tube 3 is arranged inside the catheter seat 1 and is not completely covered by the catheter seat 1, a part of the clamping tube 3 is exposed out of the catheter seat 1, the catheter seat 1 and the clamping tube 3 are coaxial, a channel 4 for the penetration or the penetration of the steel needle 2 is coaxially formed in the centers of the inside of the catheter seat 1 and the clamping tube 3, and the clamping tube 3 is an elastic silicone tube, has elasticity enough to perform physical deformation, and can be closed and opened;
The spiral flow stopping clamp 5 is sleeved outside the catheter seat 1 and cannot completely cover the catheter seat 1 and the clamping tube 3, so that a part of the clamping tube 3 is exposed outside, the upper part of the inner wall of the spiral flow stopping clamp 5 is completely attached to the outside of the catheter seat 1, a gap is reserved between the lower part of the inner wall of the spiral flow stopping clamp 5 and the infusion connector 11 at the lower part of the catheter seat 1, the outer wall of the clamping tube 3 is tightly attached to the infusion connector 11, the spiral flow stopping clamp 5 has elasticity enough to perform physical deformation and can be closed and opened, or can be contracted and expanded, the spiral flow stopping clamp 5 can be opened outwards under the action of external force, the clamping tube 3 is released, the clamping tube 3 is opened outwards by the self elasticity, the channel 4 is opened, and the spiral flow stopping clamp 5 extrudes the clamping tube 3 and drives the clamping tube 3 to shrink in the opposite direction to be closed when no external force acts, so that the channel 4 is closed, as shown in fig. 3.
The upper part of the catheter seat 1 is provided with the inclined plane 1-2 which is matched with the inner wall of the spiral flow stopping clamp 5, a user can flexibly set the included angle between the inclined plane 1-2 and the vertical axis according to actual demands, preferably 40-60 degrees, and the spiral flow stopping clamp 5 can be stably arranged on the catheter seat 1 and is not easy to fall off.
In order to realize the guiding function of the steel needle 2, the upper part of the catheter seat 1 is provided with a catheter 1-1 for the steel needle to pass through, and the spiral flow stopping clamp 5 does not cover the outside of the catheter 1-1.
The clamping tube 3 is arranged at the middle part or near the middle part inside the catheter seat 1, and when the channel 4 is closed, the middle parts of the clamping tube structure 3 and the spiral flow stopping clamp 5 are converged into a point.
The spiral flow stopping clamp 5 is made of POM elastic materials with good elasticity, threads are arranged on the outer side of the lower portion of the spiral flow stopping clamp 5 through injection molding, and connecting pieces such as a rubber plug plugging assembly 6 or a spiral cap 7 are detachably arranged on the spiral flow stopping clamp 5 through the threads, so that the connecting pieces can be replaced conveniently and rapidly.
For improving the cleanliness factor of the clamping tube 3, the service life is prolonged, the antibacterial layer and the hydrophobic layer can be sequentially arranged on the inner wall of the clamping tube 3 from inside to outside according to actual demands, and the anti-bacterial and hydrophobic coating has good antibacterial properties and hydrophobicity, so that the inner wall of the clamping tube 3 is not easy to adhere to internal fluid, blood and the like are prevented from being solidified in the clamping tube 3, the clamping tube 3 is prevented from being polluted, and the cleaning is convenient. The thickness of the antibacterial layer and the hydrophobic layer is 3-9 μm respectively. And in the same way, the inner wall of the catheter seat 1 is provided with an antibacterial layer, a hydrophobic layer and other protective layers according to actual requirements.
The invention also discloses a use method of the automatic bleeding-stopping hemodialysis indwelling needle, which comprises the following steps:
Before use, the rubber stopper plugging assembly 6 is screwed on the spiral flow stopping clamp 5 along the threads on the outer side of the lower part of the spiral flow stopping clamp 5, at the moment, the spiral flow stopping clamp 5 is under the action of the downward pulling force of the rubber stopper plugging assembly 6, the opened state of the spiral flow stopping clamp 5 is kept, the clamping pipe 3 is released, the clamping pipe 3 is outwards opened by utilizing the elasticity of the clamping pipe to open the channel 4, the lower part of the rubber stopper plugging assembly 6 is sequentially provided with the steel needle seat 8 and the exhaust connector 9, and the steel needle 2 on the steel needle seat 8 penetrates through the opened channel 4 and extends out of the guide pipe 1-1, so that the subsequent puncture is facilitated, as shown in fig. 1;
after the puncture is completed, the steel needle 2 is pulled out, the rubber plug plugging assembly 6 is removed in a anticlockwise rotation mode, the steel needle seat 8 and the exhaust connector 9 are removed together with the rubber plug plugging assembly 6, at the moment, the spiral flow stopping clamp 5 loses the downward pulling force effect of the rubber plug plugging assembly 6, the spiral flow stopping clamp 5 is closed, the clamping pipe structure 3 is closed along with the extrusion force of the spiral flow stopping clamp 5, the channel 4 is closed, and the blood is ensured not to flow out, as shown in fig. 2-3;
during treatment, the screw cap 7 on the hemodialysis pipe 10 is screwed down clockwise along the screw thread on the outer side of the lower part of the screw flow stop clamp 5, so that one end of the hemodialysis pipe 10 is connected to the lower part of the indwelling needle, in particular to the lower part of the screw flow stop clamp 5, at the moment, the screw cap 7 exerts a downward pulling force on the screw flow stop clamp 5, the screw flow stop clamp 5 is opened outwards, the clamping pipe 3 is opened outwards by self elasticity, the channel 4 is opened, and blood flows, as shown in fig. 4.
The part of the invention which is not specifically described is only required to adopt the prior art, and is not described in detail herein.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (3)
1. An automatic hemostatic hemodialysis indwelling needle, comprising:
the catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate in or out, and an infusion joint is arranged at the lower part of the catheter seat;
The clamping tube is arranged in the catheter seat and is not completely covered by the catheter seat, the catheter seat and the clamping tube are coaxial, a channel for the penetration or the penetration of a steel needle is coaxially formed in the catheter seat and the clamping tube, the clamping tube has elasticity enough to perform physical deformation, and the outer wall of the lower part of the clamping tube is tightly attached to the upper part of the infusion connector;
The spiral flow stopping clamp is arranged outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, has elasticity enough to perform physical deformation, can be closed and opened, can be outwards opened when being acted by external force, and can be released to open the clamping tube by utilizing the elasticity of the clamping tube, so that the channel is opened, and when no external force acts, the clamping tube is extruded by the spiral flow stopping clamp and is driven to be inwards closed, so that the channel is closed;
The upper part of the clamping pipe is arranged at the middle part or near the middle part inside the catheter seat, and the clamping pipe and the middle part of the spiral flow stopping clamp are converged into a point when the channel is closed;
The outer side of the lower part of the spiral flow stopping clamp is provided with threads, and the rubber plug plugging component or a spiral cap on the hemodialysis pipeline is detachably arranged on the spiral flow stopping clamp through the threads;
the rubber plug plugging component or the screw cap generates a downward pulling force on the screw flow stopping clamp, so that the screw flow stopping clamp is opened.
2. The automatic flow stopping hemodialysis indwelling needle according to claim 1, wherein an inclined plane matched with the inner wall of the spiral flow stopping clamp is arranged on the outer side of the upper portion of the catheter seat.
3. The automatic hemostatic hemodialysis indwelling needle according to claim 1, wherein said holding tube is an elastic silicone tube which is closable and openable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559364.3A CN113144320B (en) | 2021-05-21 | 2021-05-21 | Automatic hemostatic hemodialysis remaining needle and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559364.3A CN113144320B (en) | 2021-05-21 | 2021-05-21 | Automatic hemostatic hemodialysis remaining needle and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113144320A CN113144320A (en) | 2021-07-23 |
| CN113144320B true CN113144320B (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110559364.3A Active CN113144320B (en) | 2021-05-21 | 2021-05-21 | Automatic hemostatic hemodialysis remaining needle and use method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN113144320B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115813453A (en) * | 2022-11-16 | 2023-03-21 | 南京康友医疗科技有限公司 | Negative pressure suction biopsy needle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215740868U (en) * | 2021-05-21 | 2022-02-08 | 端源医疗科技无锡有限公司 | Automatic flow stopping hemodialysis remaining needle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7044441B2 (en) * | 2001-08-10 | 2006-05-16 | Cardinal Health 303, Inc. | Valved male luer connector having sequential valve timing |
| CN101068592B (en) * | 2004-11-05 | 2010-12-08 | Icu医疗公司 | Medical connector with the property of high flow rate |
| JP2009089841A (en) * | 2007-10-05 | 2009-04-30 | Nikkiso Co Ltd | Connector for indwelling needle |
| JP5651597B2 (en) * | 2009-10-16 | 2015-01-14 | テルモ株式会社 | Indwelling needle and indwelling needle assembly |
| CN201609542U (en) * | 2010-01-11 | 2010-10-20 | 吴林元 | Closed type arteriovenous indwelling needle for no-needle blood sampling |
| WO2013047416A1 (en) * | 2011-09-26 | 2013-04-04 | テルモ株式会社 | Protector and method for using same |
| CN105935460A (en) * | 2016-06-23 | 2016-09-14 | 广东先来医疗器械有限公司 | Non-return embolism-preventing remaining needle |
| CN106421999A (en) * | 2016-07-11 | 2017-02-22 | 欧阳小青 | Medical spiral needleless transfusion joint |
| US10918828B2 (en) * | 2018-05-14 | 2021-02-16 | Fresenius Medical Care Holdings, Inc. | Kink and compression tolerant medical tubing |
| GB2583508A (en) * | 2019-05-01 | 2020-11-04 | Autonumis Ltd | Valve adaptor |
| CN211024538U (en) * | 2019-10-29 | 2020-07-17 | 内蒙古民族大学附属医院 | Infusion device with non-return function for low-speed infusion |
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2021
- 2021-05-21 CN CN202110559364.3A patent/CN113144320B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215740868U (en) * | 2021-05-21 | 2022-02-08 | 端源医疗科技无锡有限公司 | Automatic flow stopping hemodialysis remaining needle |
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| CN113144320A (en) | 2021-07-23 |
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