CN111643773B - Pulse head for punching pipe and its using method - Google Patents

Pulse head for punching pipe and its using method Download PDF

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Publication number
CN111643773B
CN111643773B CN202010541413.6A CN202010541413A CN111643773B CN 111643773 B CN111643773 B CN 111643773B CN 202010541413 A CN202010541413 A CN 202010541413A CN 111643773 B CN111643773 B CN 111643773B
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pipe
tube
arc
elastic sheet
pulse
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CN111643773A (en
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余飞飞
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Suzhou Science and Technology Town Hospital
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Suzhou Science and Technology Town Hospital
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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
    • 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
    • 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

A pulse head for a washing tube comprises a shell with a cavity, wherein a liquid inlet tube connected with an injector is arranged at the top of the shell, a liquid outlet tube connected with a washing tube connector of an indwelling needle is arranged at the bottom of the shell, the lower end of the liquid inlet tube extends out of the upper part of the cavity, and the lower end of the liquid inlet tube is communicated with the upper end of a high-elasticity rubber tube; the lower part of the cavity is transversely provided with an arc-shaped elastic sheet, the convex surface of the arc-shaped elastic sheet is upward, and the edge of the arc-shaped elastic sheet is fixedly connected with the inner wall of the shell; the invention has low cost, can be used as disposable consumables, can be matched with various injectors, simplifies the pulse type tube flushing operation, can complete the pulse type tube flushing operation by continuously pressing the injectors, and has low requirement on the experience of operators; 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

Pulse head for punching pipe and its using method
Technical Field
The invention belongs to the technical field of remaining needle punching and sealing tubes, and particularly relates to a pulse head for a punching tube and a using method thereof.
Background
The operation of flushing and sealing the tube of the indwelling needle is one of the necessary operations for preventing the complication of the venous indwelling needle during the indwelling period of the catheter and ensuring the normal use of the catheter, and the operation of flushing the tube of the indwelling needle aims to flush the residual liquid medicine in the catheter into the blood vessel and clear the liquid medicine accumulated in the catheter, thereby reducing the risk of mutual contact of incompatible medicines and preventing the complication. 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 has a lower input speed than conventional medicaments, so that pipeline blockage can be caused.
At present, the hospital generally adopts a pulse type washing tube mode to wash the indwelling needle, if a direct washing tube mode is adopted, the catheter is difficult to clean thoroughly and effectively, and the pulse type washing tube adopts a washing method of stopping by pushing once, so that washing tube liquid generates positive pressure, negative pressure or pressure difference in a catheter cavity to form vortex, the comprehensive and uniform washing of the catheter wall is increased, residual medicines attached to the catheter wall can be washed cleanly and effectively, and the occurrence of blockage is reduced effectively.
Tests show that under the same conditions, a pulse tube-punching method (the pressing frequency is about 1 time/s) of pushing and stopping once is adopted, and 90% of protein on the wall of the catheter can be removed within 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.
In a patent of 2020103309135 entitled pulse head for washing tube and its application method, which was previously applied by our hospital, an injection device is disclosed, in which a pulse washing tube operation can be completed by continuously pressing an injector, but because the requirement on the matching precision of each component (such as a rotating wheel, etc.) is high, the structure is complicated, and the material cost of a flow regulating sheet, a lower rotating disc, etc. is relatively high, as a disposable consumable material, the material and production cost are still high compared with the manual pulse washing tube operation.
Disclosure of Invention
The invention aims to provide a pulse head for a washing pipe, which can complete pulse washing operation by continuously pressing an injector, can improve the pulse frequency of the pulse washing pipe, has relatively stable flow during washing the pipe and improves the washing effect.
Another object of the invention is to provide a pulse head for a washpipe that is simple in construction and low in cost.
In order to solve the technical problem, the invention discloses a pulse head for a washing pipe, which is used for being arranged on an injector to form pulse injection and comprises a shell with a cavity, wherein the shell is a cylinder or a regular polygonal cylinder; the top of the shell is provided with a liquid inlet pipe used for being connected with an injector, the bottom of the shell is provided with a liquid outlet pipe used for being connected with a washing pipe joint of the indwelling needle, the lower end of the liquid inlet pipe extends out of the upper part of the cavity, and the lower end of the liquid inlet pipe is communicated with the upper end of a high-elasticity rubber pipe;
the lower part of the cavity is transversely provided with an arc-shaped elastic piece, the convex surface of the arc-shaped elastic piece faces upwards, the edge of the arc-shaped elastic piece is fixedly connected with the inner wall of the shell, and the arc-shaped elastic piece is bounced downwards under pressure, namely when the convex surface of the arc-shaped elastic piece faces downwards, the arc-shaped elastic piece has a stable shape;
the middle part of the lower surface of the arc-shaped elastic sheet is vertically provided with a sliding pipe, and the upper end of the sliding pipe is closed and connected with the arc-shaped elastic sheet;
the bottom of the cavity is provided with a T-shaped tee joint consisting of a transverse pipe and a vertical pipe, and the lower end of the rubber pipe is communicated with one end of the transverse pipe, which is far away from the vertical pipe, through a hose; the vertical pipe is communicated with the liquid outlet pipe;
the sliding pipe can be inserted into the vertical pipe in a vertically sliding manner, and the outer diameter of the sliding pipe is adapted to the inner diameter of the vertical pipe;
an opening is formed in one side, close to the transverse pipe, of the sliding pipe, the opening is located between the upper edge of the transverse pipe and the upper edge of the vertical pipe, and the lower end of the vertical pipe is communicated with the liquid outlet pipe;
still including connecting the rope, connect rope one end and be connected bottom the rubber tube, the other end and arc elastic sheet upper surface are connected.
Preferably, the upper part of the rubber tube is provided with a thin-wall section with the length of 2-10mm, and the wall thickness of the thin-wall section is smaller than that of other parts of the rubber tube.
Preferably, one end of the hose is connected with the rubber tube, and the other end of the hose penetrates through the arc-shaped elastic sheet to be connected with the liquid outlet pipe.
Preferably, the arc-shaped elastic sheet is provided with a notch for the hose to pass through.
Preferably, the hose and the rubber tube are integrally formed or connected by a hard tube.
Preferably, the lower edge of the vertical pipe is hermetically connected with the liquid outlet pipe or integrally formed.
Preferably, the connection string is an inelastic string or a low-elasticity string.
A method for using a pulse head for a washing tube comprises the steps of connecting an injector with a liquid inlet tube, connecting a liquid outlet tube with a washing tube joint of a remaining needle, continuously pressing the injector, enabling washing liquid to enter a rubber tube and enable the rubber tube to expand from a thin-wall section to the top down until the rubber tube expands to the position above an arc elastic sheet, enabling the middle of the arc elastic sheet to rapidly and downwards bounce and keep a stable concave state, enabling the arc elastic sheet to push a sliding tube to downwards move, enabling a transverse tube to be communicated with an opening of the sliding tube, enabling the washing liquid in the expanded rubber tube to be rapidly extruded under the contraction pressure of the rubber tube and to flow out of the washing tube joint of the remaining needle through the opening of the sliding tube, enabling the volume of the washing liquid in the expanded rubber tube to be reduced and the length of the expanded rubber tube to be shortened after most of the washing liquid is released, enabling the arc elastic sheet to be pulled back to an initial upwards convex state through a connecting rope by the rubber tube, the sliding tube moves upwards to reset, the communication state of the transverse tube and the opening of the sliding tube is stopped, and one-time pulse injection is completed; the pulse flush is completed as the operator continues to depress the syringe, cycling the motion described above until the flush fluid is depleted from the syringe.
Preferably, the arc-shaped elastic sheet pushes the sliding pipe to move downwards, and when the transverse pipe is communicated with the opening of the sliding pipe, the overlapping area of the opening of the sliding pipe and the transverse pipe is not less than 80% of the area of the opening of the sliding pipe.
Preferably, the amount of the washing solution pushed in each of the pulse injections is 0.5 to 1 ml.
The pulse head for the washpipe and the use method thereof have the advantages that:
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 pipe flushing efficiency is improved.
2. Because the rubber tube expands and can force the arc flexure strip to bounce down behind the certain degree, violently the pipe is linked together with the opening of slip tube, make the flush fluid volume of injecting at every turn remain throughout at a comparatively stable volume, and, because pressure (power) when injecting the flush fluid mainly come from the contractile force of rubber tube, consequently, this flush fluid pressure that also makes pulse injection at every turn is invariable relatively, greatly reduced the difference of different operator pulsed towards pipe operation effect, the standardization and the uniformity of towards pipe operation have been improved.
3. Provides stable pulse frequency higher than the manual operation frequency, and has relatively stable liquid flow rate in the washed pipe, good eddy effect in the washed pipe and good integral washing effect.
4. The cost is low, the disposable consumable can be used, various injectors can be matched, and the application prospect is good.
Drawings
Fig. 1 is a schematic diagram of a pulse head for a washpipe;
FIG. 2 is a schematic structural view of the pulse head for a washpipe in FIG. 1 in an expanded state of the rubber pipe; wherein the direction indicated by the arrow shows the direction of flow of the flushing liquid.
The numbering in the figure is: a-a cavity, 1-a shell, 2-a liquid inlet pipe, 3-a liquid outlet pipe, 4-a rubber pipe, 401-a thin-walled section, 5-an arc-shaped elastic sheet, 6-a sliding pipe, 601-an opening, 7-a transverse pipe, 8-a vertical pipe, 9-a hose and 10-a connecting rope.
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
A pulse head for a washing pipe is used for being installed on an injector to form pulse injection, and comprises a shell 1 with a cavity A, wherein the shell is a cylinder or a regular polygon cylinder; the top of the shell is provided with a liquid inlet pipe 2 used for being connected with an injector, the bottom of the shell is provided with a liquid outlet pipe 3 used for being connected with a washing pipe joint of an indwelling needle, the lower end of the liquid inlet pipe extends out of the upper part of the cavity, and the lower end of the liquid inlet pipe is communicated with the upper end of a high-elasticity rubber pipe 4;
the lower part of the cavity is transversely provided with an arc-shaped elastic piece 5, the convex surface of the arc-shaped elastic piece faces upwards, the edge of the arc-shaped elastic piece is fixedly connected with the inner wall of the shell, and the arc-shaped elastic piece is bounced downwards under pressure, namely when the convex surface of the arc-shaped elastic piece faces downwards, the arc-shaped elastic piece has a stable shape; when the convex surface is up or the convex surface is down, only the arc-shaped elastic sheet has a stable shape, the flushing fluid flow passage can be closed (the convex surface is up) or the flushing fluid flow passage can be kept open for a period of time (the convex surface is down).
The middle part of the lower surface of the arc-shaped elastic sheet is vertically provided with a sliding tube 6, and the upper end of the sliding tube is closed and connected with the arc-shaped elastic sheet;
the bottom of the cavity is provided with a T-shaped tee joint consisting of a transverse pipe 7 and a vertical pipe 8, and the lower end of the rubber pipe is communicated with one end of the transverse pipe, which is far away from the vertical pipe, through a hose 9; the vertical pipe is communicated with the liquid outlet pipe;
the sliding pipe can be inserted into the vertical pipe in a vertically sliding manner, and the outer diameter of the sliding pipe is adapted to the inner diameter of the vertical pipe;
an opening 601 is formed in one side, close to the transverse pipe, of the sliding pipe, the opening is located between the upper edge of the transverse pipe and the upper edge of the vertical pipe, and the lower end of the vertical pipe is communicated with the liquid outlet pipe; the vertical pipe is adjusted by the contraction or expansion of the rubber pipe to force the arc-shaped elastic sheet to be in one of two states of the convex surface facing upwards or the convex surface facing downwards, so that the relative position between the opening and the transverse pipe is realized, namely the switching of the closing or opening state of the flushing liquid circulation passage.
Still including connecting rope 10, connect rope one end and be connected bottom the rubber tube, the other end and arc elastic sheet upper surface are connected. During production, the length of the connecting rope is controlled or adjusted to enable the arc-shaped elastic piece to be in two states of the convex surface facing upwards or the convex surface facing downwards, a proper critical value related to the length of the connecting rope exists between the two state conversion, and the selection of the length of the connecting rope is also related to the elasticity of the arc-shaped elastic piece.
The upper part of the rubber tube is provided with a thin-wall section 401 with the length of 2-10mm, and the wall thickness of the thin-wall section is smaller than that of other parts of the rubber tube. Found in practice, when the flush fluid got into the rubber tube, the rubber tube can be preferred to begin the inflation from the thin wall section, and this makes the inflation of rubber tube take place from top to bottom at every turn, and the inflation process is stable, avoids arc flexure strip to be triggered by prohibitively early the adverse circumstances such as take place, and the flush fluid propulsion volume when making pulse injection at every turn is stable controllable.
One end of the hose is connected with the rubber tube, and the other end of the hose penetrates through the arc-shaped elastic sheet to be connected with the liquid outlet tube.
And the arc-shaped elastic sheet is provided with a notch for the hose to pass through.
The hose and the rubber tube are integrally formed or connected through a hard tube. In consideration of reducing production cost, the hose can be replaced by the middle lower part of the rubber tube, namely the upper end of the connecting rope is connected with the middle lower part of the rubber tube (the connecting rope can be tied or bonded and fixed on the rubber tube, but the smoothness of the pipeline inside the rubber tube cannot be influenced), the middle lower part of the rubber tube is the hose at the moment, and the part does not participate in the expansion of the rubber tube.
The lower edge of the vertical pipe is hermetically connected with the liquid outlet pipe or integrally formed.
The connecting rope is an inelastic rope or a low-elasticity rope.
Example 2
A method for using a pulse head for a washing tube comprises the steps of connecting an injector with a liquid inlet tube, connecting a liquid outlet tube with a washing tube joint of a remaining needle, continuously pressing the injector, enabling washing liquid to enter a rubber tube and enable the rubber tube to expand from a thin-wall section to the top down until the rubber tube expands to the position above an arc elastic sheet, enabling the middle of the arc elastic sheet to rapidly and downwards bounce and keep a stable concave state, enabling the arc elastic sheet to push a sliding tube to downwards move, enabling a transverse tube to be communicated with an opening of the sliding tube, enabling the washing liquid in the expanded rubber tube to be rapidly extruded under the contraction pressure of the rubber tube and to flow out of the washing tube joint of the remaining needle through the opening of the sliding tube, enabling the volume of the washing liquid in the expanded rubber tube to be reduced and the length of the expanded rubber tube to be shortened after most of the washing liquid is released, enabling the arc elastic sheet to be pulled back to an initial upwards convex state through a connecting rope by the rubber tube, the sliding tube moves upwards to reset, the communication state of the transverse tube and the opening of the sliding tube is stopped, and one-time pulse injection is completed; the pulse flush is completed as the operator continues to depress the syringe, cycling the motion described above until the flush fluid is depleted from the syringe.
The arc-shaped elastic piece pushes the sliding pipe to move downwards, and when the transverse pipe is communicated with the opening of the sliding pipe, the overlapping area of the opening of the sliding pipe and the transverse pipe is not less than 80% of the area of the opening of the sliding pipe. When the opening of the transverse pipe is communicated with the opening of the sliding pipe by adjusting the position and radian of the arc-shaped elastic sheet, the opening height of the sliding pipe, the height of the transverse pipe and the like, the coincidence area of the opening of the sliding pipe and the transverse pipe is not less than 80% of the opening area of the sliding pipe, so that the smoothness of a pipeline is ensured, and flushing liquid remained in the rubber pipe is output as soon as possible.
It should be noted that the operator must not press too hard while continuing to press the syringe, otherwise the rubber tube may be in a large expansion state (the horizontal tube is always in communication with the opening of the sliding tube) and it is difficult to form a pulse flush.
Example 3
Furthermore, there is no clear industry standard for the amount of flushing liquid advancement in the pulse flushing operation, and in order to improve the flushing efficiency and shorten the flushing time, the operation specifications of some hospitals give some instructive suggestions (for example, 1ml of flushing liquid advancement per pulse flushing, 4 continuous thrusts, and then 3ml constant infusions) so that the flushing time is saved, but the flushing effect is to be verified.
Through appropriate adjustment of the length, thickness and maximum expansion degree of the rubber tube, the volume of the inner cavity of the shell, the position and radian of the arc-shaped elastic sheet, the opening height of the sliding tube, the height of the transverse tube and the like, the propelling quantity of flushing liquid during each pulse injection is 0.5-1 ml. Furthermore, in practice, it has been found that a thrust of 0.5-0.6ml is a preferred value, and the total length of the tube-flushing time is within a preferred range, for example, the total amount of the flushing liquid is 7ml, assuming that the thrust of the flushing liquid per pulse flushing is 0.5ml (the rubber tube needs a larger pressure for the first inflation, the thrust of the flushing liquid when the first pulse occurs may be slightly larger and gradually stabilized after the first inflation), the whole tube-flushing process can be completed for about 10 seconds, at least more than 10 pulses can be formed in the tube-flushing process, the tube-flushing effect is much better than that of the tube-flushing operation guidance of a part of departments, the whole tube-flushing time is 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. A pulse head for a wash pipe is used for being installed on an injector to form pulse injection, and is characterized by comprising a shell with a cavity, wherein the shell is a cylinder or a regular polygonal cylinder; the top of the shell is provided with a liquid inlet pipe used for being connected with an injector, the bottom of the shell is provided with a liquid outlet pipe used for being connected with a washing pipe joint of the indwelling needle, the lower end of the liquid inlet pipe extends out of the upper part of the cavity, and the lower end of the liquid inlet pipe is communicated with the upper end of a high-elasticity rubber pipe;
an arc-shaped elastic sheet is transversely arranged at the lower part of the cavity, the convex surface of the arc-shaped elastic sheet faces upwards, and the edge of the arc-shaped elastic sheet is fixedly connected with the inner wall of the shell;
the middle part of the lower surface of the arc-shaped elastic sheet is vertically provided with a sliding pipe, and the upper end of the sliding pipe is closed and connected with the arc-shaped elastic sheet;
the bottom of the cavity is provided with a T-shaped tee joint consisting of a transverse pipe and a vertical pipe, and the lower end of the rubber pipe is communicated with one end of the transverse pipe, which is far away from the vertical pipe, through a hose; the vertical pipe is communicated with the liquid outlet pipe;
the sliding pipe can be inserted into the vertical pipe in a vertically sliding manner, and the outer diameter of the sliding pipe is adapted to the inner diameter of the vertical pipe;
an opening is formed in one side, close to the transverse pipe, of the sliding pipe, the opening is located between the upper edge of the transverse pipe and the upper edge of the vertical pipe, and the lower end of the vertical pipe is communicated with the liquid outlet pipe;
still including connecting the rope, connect rope one end and be connected bottom the rubber tube, the other end and arc elastic sheet upper surface are connected.
2. A pulse head according to claim 1 wherein the upper part of the rubber tube is provided with a thin wall section 2-10mm long, the thickness of the wall of the thin wall section being less than the thickness of the wall of the remainder of the rubber tube.
3. A pulse head according to claim 1, wherein the flexible tube is connected at one end to the rubber tube and at the other end to the outlet tube by passing through the arcuate resilient strip.
4. A pulse head according to claim 3, wherein the arcuate resilient strip is provided with a notch for passage of a hose therethrough.
5. A pulse head according to claim 1, wherein the hose and the rubber tube are integrally formed or are connected by a rigid tube.
6. A pulse head according to claim 1, wherein the lower edge of the standpipe is sealingly connected to or integrally formed with the outlet pipe.
7. A pulse head for a washpipe as claimed in claim 1, wherein the connecting rope is inelastic or low elasticity.
CN202010541413.6A 2020-06-15 2020-06-15 Pulse head for punching pipe and its using method Active CN111643773B (en)

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CN110623650A (en) * 2019-09-26 2019-12-31 深圳安特医疗股份有限公司 Flush valve assembly and invasive pressure sensor

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Publication number Priority date Publication date Assignee Title
CN201253379Y (en) * 2008-06-23 2009-06-10 胡化刚 Vein indwelling path-way wash-pipe sealing device
CN204766842U (en) * 2015-06-25 2015-11-18 上海上医康鸽医用器材有限责任公司 Needleless infusion prevents that needle is kept somewhere to vein against current
CN110623650A (en) * 2019-09-26 2019-12-31 深圳安特医疗股份有限公司 Flush valve assembly and invasive pressure sensor

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