CN113144320A - Automatic flow stopping hemodialysis remaining needle and using method thereof - Google Patents

Automatic flow stopping hemodialysis remaining needle and using method thereof Download PDF

Info

Publication number
CN113144320A
CN113144320A CN202110559364.3A CN202110559364A CN113144320A CN 113144320 A CN113144320 A CN 113144320A CN 202110559364 A CN202110559364 A CN 202110559364A CN 113144320 A CN113144320 A CN 113144320A
Authority
CN
China
Prior art keywords
spiral flow
clamping tube
flow stopping
opened
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110559364.3A
Other languages
Chinese (zh)
Inventor
蒋东勇
姚成龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duanyuan Medical Technology Wuxi Co ltd
Original Assignee
Duanyuan Medical Technology Wuxi Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Duanyuan Medical Technology Wuxi Co ltd filed Critical Duanyuan Medical Technology Wuxi Co ltd
Priority to CN202110559364.3A priority Critical patent/CN113144320A/en
Publication of CN113144320A publication Critical patent/CN113144320A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621Extra-corporeal blood circuits
    • A61M1/3653Interfaces between patient blood circulation and extra-corporal blood circuit
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1621Constructional aspects thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621Extra-corporeal blood circuits
    • A61M1/3653Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3659Cannulae pertaining to extracorporeal circulation
    • A61M1/3661Cannulae pertaining to extracorporeal circulation for haemodialysis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22Valves or arrangement of valves
    • A61M39/28Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/283Screw 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)
  • Pulmonology (AREA)
  • Emergency Medicine (AREA)
  • External Artificial Organs (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention discloses an automatic flow stopping hemodialysis remaining needle and a using method thereof, wherein the automatic flow stopping hemodialysis remaining needle comprises the following steps: a catheter hub; 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 steel needle to penetrate in or out is coaxially arranged 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 being subjected to external force, the clamping tube is opened outwards by utilizing the elasticity of the clamping tube, a channel is opened, and when no external force is applied, the spiral flow stopping clamp extrudes the clamping tube and drives the clamping tube to be closed inwards or contracted, so that the channel is closed. According to the invention, the opening or closing of the channel is realized by applying a pulling force to the spiral flow stopping clip, the problem of difficulty in flow stopping in the prior art is solved, and the device is convenient to operate, high in working efficiency, simple in structure and suitable for industrial popularization and use.

Description

Automatic flow stopping hemodialysis remaining needle and using method thereof
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 dialysis that can sell in the existing market is with keeping somewhere the needle with keeping somewhere, has the blood to only flow the aspect inconvenient problem, and the operation is too complicated, and some needs hold the stagnant flow with the finger, and some needs only flow with the help of hemostatic forceps, have more risk:
1. if the force for using is small by pinching with fingers, the clamping tube may not be closed, so that blood leakage is caused;
2. the hemostatic forceps are metal articles, and the clamping tube may be damaged in operation, so that the clamping tube is damaged in the treatment process to cause blood leakage.
To avoid these inconveniences and risks, we have made some improvements to the product.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an automatic flow-stopping hemodialysis indwelling needle and a using method thereof.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
an automatic flow-stopping hemodialysis indwelling needle comprising:
the catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate in or out;
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 steel needle to penetrate in or out is coaxially formed in the catheter seat and the clamping tube, and the clamping tube has elasticity enough for physical deformation;
the spiral flow stopping clamp is arranged outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, the spiral flow stopping clamp has elasticity enough for physical deformation and can be closed and opened, the spiral flow stopping clamp can be opened outwards under the action of external force to release the clamping tube, the clamping tube is opened outwards by utilizing the elasticity of the clamping tube, a channel is opened, and when no external force is applied, the spiral flow stopping clamp presses the clamping tube and drives the clamping tube to be closed inwards to close the channel.
Furthermore, the outer side of the upper part of the conduit seat is provided with an inclined plane matched with the inner wall of the spiral flow stopping clamp.
Further, the clamping tube is an elastic silicone tube and can be closed and opened, the clamping tube is arranged in the middle inside the catheter seat or close to the middle, and the middle of the clamping tube and the middle of the spiral flow stopping clamp are converged into a point when the channel is closed.
Furthermore, the outer side of the lower part of the spiral flow stopping clamp is provided with threads, and the rubber plug plugging component or the spiral cap is detachably arranged on the spiral flow stopping clamp through the threads.
The invention discloses a use method of an automatic flow 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 component to keep the spiral flow stopping clamp in an open state, the clamping pipe is opened by utilizing the elasticity of the clamping pipe, so that the channel is opened, and the steel needle penetrates through the channel to puncture;
after the puncture is finished, the steel needle is pulled out, the rubber plug plugging component is removed in a counterclockwise rotating mode, the spiral flow stopping clamp loses the action of the pull-down force of the rubber plug plugging component, the spiral flow stopping clamp is closed, the clamping tube is closed along with the extrusion force of the spiral flow stopping clamp, the channel is closed, and blood is guaranteed not to flow out;
during treatment, one end of the hemodialysis pipeline is connected to the lower portion of the indwelling needle, the spiral cap on the hemodialysis pipeline is screwed up clockwise along the threads on the outer side of the lower portion of the spiral flow stopping clamp, the spiral cap generates a pull-down force effect on the spiral flow stopping clamp to enable the spiral flow stopping clamp to be opened, the clamping pipe is opened by utilizing self elasticity, the channel is opened, and blood circulates.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses an automatic flow stopping hemodialysis remaining needle and a using method thereof, wherein the automatic flow stopping hemodialysis remaining needle comprises the following steps: the catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate in or out; the clamping tube is arranged in the catheter base and is not completely covered by the catheter base, the catheter base and the clamping tube are coaxial, a channel for the steel needle to penetrate in or out is coaxially formed in the catheter base and the clamping tube, the clamping tube has elasticity enough for physical deformation, and the clamping tube is an elastic silicone tube and can be closed and opened or can be understood to be shrinkable and expandable; the spiral flow stopping clamp is arranged outside the catheter seat, the spiral flow stopping clamp sleeve cannot completely cover the catheter seat and the clamping tube, one part of the clamping tube is exposed outside, the spiral flow stopping clamp has elasticity enough for physical deformation, and can be closed and opened, or can 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, the channel is opened, and when no external force is applied, the spiral flow stopping clamp extrudes the clamping tube and drives the clamping tube to contract and close, so that the channel is closed. According to the automatic flow-stopping hemodialysis indwelling needle and the using method thereof, the spiral flow-stopping clamp is opened when external tension is applied to the spiral flow-stopping clamp and is cooperated with the clamping tube to open the channel, when no external force is applied, the spiral flow-stopping clamp presses the clamping tube and drives the clamping tube to contract and close, so that the channel is closed, the channel can be opened or closed quickly by applying tension to the spiral flow-stopping clamp, the problem that the indwelling 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 indwelling needle is suitable for industrial popularization and use.
Drawings
FIG. 1 is a schematic view showing the structure of an indwelling needle according to the present invention when not in use;
FIG. 2 is a schematic view of the closed configuration of the indwelling needle passageway of the present invention;
FIG. 3 is a schematic perspective view of the spiral flow stopping clip of the present invention when closed;
FIG. 4 is a schematic view showing the structure of the indwelling needle according to the present invention during hemodialysis.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
As shown in fig. 1 to 4, an automatic flow-stopping hemodialysis indwelling needle includes:
the catheter seat 1 is used for supporting other parts of the indwelling needle and allowing the steel needle 2 to penetrate in or out;
the clamping tube 3 is arranged in the catheter base 1 and is not completely covered by the catheter base 1, one part of the clamping tube 3 is exposed out of the catheter base 1, the catheter base 1 and the clamping tube 3 are coaxial, a channel 4 for the steel needle 2 to penetrate in or out is coaxially arranged in the centers of the catheter base 1 and the clamping tube 3, and the clamping tube 3 is an elastic silicone tube and has elasticity enough for physical deformation and can be closed and opened;
a spiral flow stopping clamp 5, the spiral flow stopping clamp 5 is sleeved outside the catheter seat 1 and can not 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 joint 11 at the lower part of the catheter seat 1, the outer wall of the clamping tube 3 is tightly attached to the infusion joint 11, the spiral flow stopping clamp 5 has elasticity enough for physical deformation, can be closed and opened, or as contractible and expandable, the spiral flow stopping clamp 5 can be opened outwards when being acted by external force, the clamping tube 3 is released, the clamping tube 3 is opened outwards by utilizing the elasticity of the clamping tube 3, the channel 4 is opened, when no external force is acted, the spiral flow stopping clamp 5 presses the clamping tube 3 and drives the clamping tube 3 to contract and close in the opposite direction, so that the channel 4 is closed, as shown in fig. 3.
The inclined plane 1-2 matched with the inner wall of the spiral flow stopping clamp 5 is arranged at the upper part of the catheter seat 1, a user can flexibly set an included angle between the inclined plane 1-2 and a vertical axis according to actual requirements, the included angle is preferably 40-60 degrees, the spiral flow stopping clamp 5 can be stably installed on the catheter seat 1, and the spiral flow stopping clamp 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 in the middle of the inner part of the catheter seat 1 or close to the middle of the inner part of the catheter seat, and the clamping tube structure 3 and the middle of the spiral flow stopping clamp 5 are converged into a point when the channel 4 is closed.
Spiral flow stopping clamp 5 adopts the good POM elastic material of elasticity to make, injection moulding, and spiral flow stopping clamp 5 lower part outside sets up the screw thread, and connecting pieces such as plug shutoff subassembly 6 or screw cap 7 pass through detachable the installing in the spiral flow stopping clamp 5 of screw thread, the quick replacement connecting piece of being convenient for.
For the cleanliness factor that improves grip tube 3, increase of service life can set gradually antibiotic layer and hydrophobic layer from inside to outside at grip tube 3 inner wall according to actual demand, has good bacterinertness and hydrophobicity, makes 3 inner walls of grip tube difficult with inside fluid adhesion, avoids blood etc. to solidify in grip tube 3, avoids polluting grip tube 3, the washing of being convenient for. The thicknesses of the antibacterial layer and the hydrophobic layer are respectively 3-9 μm. In the same way, the inner wall of the catheter holder 1 is provided with protective layers such as an antibacterial layer and a hydrophobic layer according to actual requirements.
The invention also discloses a use method of the automatic flow stopping hemodialysis remaining needle, which comprises the following steps:
before use, the rubber plug plugging component 6 is screwed on the spiral flow stopping clamp 5 along the thread 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 acted by the downward pulling force of the rubber plug plugging component 6 to keep the opening state of the spiral flow stopping clamp 5, the clamping tube 3 is released, the clamping tube 3 is opened outwards by utilizing the elasticity of the clamping tube 3, the channel 4 is opened, the lower part of the rubber plug plugging component 6 is sequentially provided with a steel needle seat 8 and an exhaust joint 9, and the steel needle 2 on the steel needle seat 8 penetrates through the opened channel 4 and extends out of the conduit 1-1, so that the subsequent puncture is facilitated, as shown in figure 1;
after the puncture is finished, the steel needle 2 is pulled out, the rubber plug plugging component 6 is removed in an anticlockwise rotating mode, the steel needle seat 8 and the exhaust joint 9 are removed together with the rubber plug plugging component 6, at the moment, the spiral flow stopping clamp 5 loses the action of the lower pulling force of the rubber plug plugging component 6, the spiral flow stopping clamp 5 is closed, the clamping tube structure 3 is closed along with the extrusion force of the spiral flow stopping clamp 5, the channel 4 is closed, and blood is ensured not to flow out, as shown in the graph 2-3;
during treatment, the screw cap 7 on the hemodialysis pipeline 10 is screwed clockwise along the screw thread on the outer side of the lower part of the spiral flow stopping clamp 5, and then one end of the hemodialysis pipeline 10 is connected to the lower part of the indwelling needle, specifically to the lower part of the spiral flow stopping clamp 5, at this time, the screw cap 7 generates a pull-down force on the spiral flow stopping clamp 5, the spiral flow stopping clamp 5 is opened outwards, the clamping tube 3 is opened outwards by utilizing self elasticity, the channel 4 is opened, and blood circulates, as shown in fig. 4.
The parts of the invention not specifically described can be realized by adopting the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. An automatic flow-stopping hemodialysis indwelling needle, comprising:
the catheter seat is used for supporting the indwelling needle and allowing the steel needle to penetrate in or out;
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 steel needle to penetrate in or out is coaxially formed in the catheter seat and the clamping tube, and the clamping tube has elasticity enough for physical deformation;
the spiral flow stopping clamp is arranged outside the catheter seat and cannot completely cover the catheter seat and the clamping tube, the spiral flow stopping clamp has elasticity enough for physical deformation and can be closed and opened, the spiral flow stopping clamp can be opened outwards under the action of external force to release the clamping tube, the clamping tube is opened outwards by utilizing the elasticity of the clamping tube, a channel is opened, and when no external force is applied, the spiral flow stopping clamp presses the clamping tube and drives the clamping tube to be closed inwards to close the channel.
2. The automatic flow-stopping hemodialysis indwelling needle according to claim 1, wherein a slope adapted to the inner wall of the spiral flow-stopping clip is provided on the outer side of the upper portion of the catheter hub.
3. The automatic flow-stopping hemodialysis indwelling needle according to claim 1, wherein the holding tube is an elastic silicone tube which can be closed and opened, the holding tube is disposed in the middle or near the middle inside the catheter hub, and the holding tube and the spiral flow-stopping clip converge at a point in the middle when the channel is closed.
4. The automatic flow-stopping hemodialysis indwelling needle according to claim 1, wherein threads are provided on the outer side of the lower portion of the spiral flow-stopping clip, and the plug plugging component or the screw cap is detachably mounted on the spiral flow-stopping clip through the threads.
5. The method of using an automatic flow stopping hemodialysis indwelling needle according to any one of claims 1 to 4, comprising the steps of:
before use, the spiral flow stopping clamp is under the action of the downward pulling force of the rubber plug plugging component to keep the spiral flow stopping clamp in an open state, the clamping pipe is opened by utilizing the elasticity of the clamping pipe, so that the channel is opened, and the steel needle penetrates through the channel to puncture;
after the puncture is finished, the steel needle is pulled out, the rubber plug plugging component is removed in a counterclockwise rotating mode, the spiral flow stopping clamp loses the action of the pull-down force of the rubber plug plugging component, the spiral flow stopping clamp is closed, the clamping tube is closed along with the extrusion force of the spiral flow stopping clamp, the channel is closed, and blood is guaranteed not to flow out;
during treatment, one end of the hemodialysis pipeline is connected to the lower portion of the indwelling needle, the spiral cap on the hemodialysis pipeline is screwed up clockwise along the threads on the outer side of the lower portion of the spiral flow stopping clamp, the spiral cap generates a pull-down force effect on the spiral flow stopping clamp to enable the spiral flow stopping clamp to be opened, the clamping pipe is opened by utilizing self elasticity, the channel is opened, and blood circulates.
CN202110559364.3A 2021-05-21 2021-05-21 Automatic flow stopping hemodialysis remaining needle and using method thereof Pending CN113144320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110559364.3A CN113144320A (en) 2021-05-21 2021-05-21 Automatic flow stopping hemodialysis remaining needle and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110559364.3A CN113144320A (en) 2021-05-21 2021-05-21 Automatic flow stopping hemodialysis remaining needle and using method thereof

Publications (1)

Publication Number Publication Date
CN113144320A true CN113144320A (en) 2021-07-23

Family

ID=76877106

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110559364.3A Pending CN113144320A (en) 2021-05-21 2021-05-21 Automatic flow stopping hemodialysis remaining needle and using method thereof

Country Status (1)

Country Link
CN (1) CN113144320A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JP3736575B2 (en) Catheter insertion device with valve
JP5278427B2 (en) Device for introducing a catheter guide wire into a blood vessel
US5807347A (en) Medical valve element
EP2142114B1 (en) Adapter for an introducer
JP2012528689A (en) Cleaning device for medical equipment with friction-based fitting
AU2016261054B2 (en) Telescopic urinary catheter assemblies
CN113144320A (en) Automatic flow stopping hemodialysis remaining needle and using method thereof
CN215740868U (en) Automatic flow stopping hemodialysis remaining needle
CN204468877U (en) The venous detaining needle of the anti-return blood blood coagulation of a kind of energy
CN202960695U (en) Cardiovascular intervention therapeutic device
CN207462361U (en) The drainage bag of catheter and the adapter of catheter
WO2008022492A1 (en) Urine-leading device
CN211068759U (en) Butterfly-shaped pipe clamp
CN208405493U (en) A kind of depression drainage device pipeline fixing device
CN202277603U (en) Central venous catheter for interventional therapy
EP3711807A1 (en) Urinary catheter assembly
CN205323011U (en) Stifled pipe device of three chamber ureters
CN216755101U (en) Hose, enema bottle and enema tube
CN210331339U (en) Disposable sterile screw three-cavity urinary catheter
CN219983598U (en) Retaining needle for anti-adhesive-cloth pull needle
CN220608772U (en) Hydrops discharging equipment convenient to collect
CN213285221U (en) Three-cavity catheter
CN220089487U (en) Blood collection indwelling needle and blood collection device
CN210750480U (en) Improvement body cavity hydrops drainage device
CN220293635U (en) Anti-bleeding arterial puncture needle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination