WO2016101858A1 - 一种输液流速调节器 - Google Patents

一种输液流速调节器 Download PDF

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Publication number
WO2016101858A1
WO2016101858A1 PCT/CN2015/098144 CN2015098144W WO2016101858A1 WO 2016101858 A1 WO2016101858 A1 WO 2016101858A1 CN 2015098144 W CN2015098144 W CN 2015098144W WO 2016101858 A1 WO2016101858 A1 WO 2016101858A1
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WO
WIPO (PCT)
Prior art keywords
adjusting rod
fixed base
adjusting
passage
liquid
Prior art date
Application number
PCT/CN2015/098144
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English (en)
French (fr)
Inventor
胡绍勤
汤丽芬
Original Assignee
胡绍勤
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Application filed by 胡绍勤 filed Critical 胡绍勤
Publication of WO2016101858A1 publication Critical patent/WO2016101858A1/zh

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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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A61M5/16813—Flow controllers by controlling the degree of opening of the flow line

Definitions

  • the present invention relates to the field of medical devices, and in particular to an infusion flow rate regulator.
  • Infusion therapy is an important clinical treatment. Infusion therapy is applied to infusion sets or infusion pumps of various types of infusion regulators for different occasions.
  • the basic principle of the conventional infusion regulator is basically the same. Basically, a pulley is arranged outside the infusion catheter, and the infusion catheter is mainly squeezed by a pulley to change its shape, thereby changing the cross-sectional area of the liquid flow channel, that is, The cross-sectional area of the infusion catheter flow channel is varied to adjust the infusion flow rate.
  • the ordinary infusion regulator can be operated with one hand, which can realize the stepless adjustment of the infusion flow rate.
  • the infusion catheter is a flexible and smooth surface hose
  • the pulley will be moved from the set position or even pushed away during the infusion process. Completely slipping, the infusion flow rate is out of control, and the infusion flow rate exceeding the predetermined speed clinically causes serious medical accidents such as heart failure and death, which poses a major safety hazard.
  • the infusion catheter has elasticity and the infusion catheter will be deformed after being squeezed for a long time, it cannot be restored to its original state.
  • the cross-sectional area of the infusion conduit is not predictable, so that the operator cannot follow the pulley.
  • the adjustment of the flow depends more on the operator's experience than on the flow regulator itself, which cannot be applied when precise control of the infusion flow rate is required.
  • the conventional conventional flow setting infusion set adopts a liquid flow channel with a preset cross-sectional area continuously changing and a fixed shape, and the liquid outlet communicates with the liquid inlet through the liquid flow channel, and passes through the liquid inlet and the liquid outlet.
  • the cross-sectional area of the corresponding liquid flow channel is different, and the purpose of adjusting the infusion flow rate is achieved.
  • the flow setting type infusion regulator can realize the stepless adjustment of the infusion flow rate, which can solve the infusion flow rate drift, but the process is complicated, requires two-hand operation, and the production cost is high, and the flow rate scale is a circular curved surface design, which needs manual rotation to observe the flow rate. Scale, it is not convenient for nurses to inspect the infusion.
  • the cross-sectional area of the predetermined liquid flow channel is small and the stroke is long, and it is easy to block, so it is difficult to popularize clinically.
  • the volume of a single drop of different liquids will vary, generally between 0.043 and 0.05 ml, and special drugs will exceed this range.
  • the existing flow setting regulator can not meet the change of the single drop volume of the liquid medicine. Therefore, when the clinical infusion is performed, it is more accurate to operate according to the "drip".
  • the clinical in general is to refer to the infusion flow rate of the single drop volume of the different medical liquids by the nursing staff. Adjustment.
  • Infusion pumps are commonly used when precise control of the infusion flow rate is required, but the infusion pump needs to be used in the presence of a power source, which is inconvenient to carry, expensive, unfavorable, and has been operated. Complex, not intuitive and simple.
  • An infusion flow rate adjuster comprises a fixed base provided with a fixed base inlet port and a fixed base liquid outlet, and an adjustment rod mounted on the fixed base; the adjustment rod is provided with a liquid inlet connected to the fixed base And a liquid flow passage between the liquid outlet of the fixed base; the fixed base is provided with an adjusting rod passage; the adjusting rod passage is provided with a movable adjusting rod, and the adjusting rod and the adjusting rod channel are watertightly sealed Adjusting the cross-sectional area of the liquid flow passage for the passage of the liquid by adjusting the area of the bottom portion of the fixed base and the overlapping portion of the cross-sectional shape of the liquid flow passage on the adjusting rod.
  • An infusion flow rate adjuster includes a fixed base provided with a fixed base inlet port and a fixed base liquid outlet, and an adjustment rod mounted on the fixed base; the adjustment rod is provided with a liquid outlet connected to the fixed base And a liquid flow passage between the adjusting rod inlet; the fixing base is provided with an adjusting rod passage; the adjusting rod passage is provided with a movable adjusting rod, and the adjusting rod and the adjusting rod passage are watertightly sealed The adjusting rod is provided with an adjusting rod inlet opening and an adjusting rod outlet opening communicating with the fixed base liquid outlet; by adjusting an overlapping portion of the bottom shape of the fixed base and the cross-sectional shape of the liquid flow passage on the adjusting rod Area Adjusts the cross-sectional area of the flow channel for liquid to pass through.
  • the fixed base is provided with an adjusting rod passage communicating with the fixed base liquid pipeline.
  • the adjustment rod passage is disposed perpendicular to the liquid flow path.
  • At least one of the liquid flow channels is provided.
  • the liquid flow channel is a groove which is spaced apart from each other, or a groove whose cross-sectional area continuously changes.
  • the minimum cross-sectional area of the liquid line on the fixed base is greater than or equal to the maximum cross-sectional area of the liquid flow path.
  • the adjusting rod is intercepted by changing the length and/or the angle of the bottom embedded adjusting rod passage, and the cross-sectional shape of the liquid flow passage on the adjusting rod is matched with the bottom shape on the fixed base.
  • the liquid flow channel can be completely intercepted.
  • the adjusting rod is provided with at least one liquid flow passage having a through hole, and the adjusting rod changes the sectional area of the cross section of the through hole on the adjusting rod and the bottom shape of the fixed base by the vertical movement. To adjust the flow rate.
  • the adjusting rod is provided with a liquid flow channel whose cross-sectional area is continuously changed, and the adjusting rod changes the liquid flow channel on the adjusting rod by performing vertical movement or horizontal rotation or spiral motion along the adjusting rod passage.
  • the flow rate is adjusted by the cross-sectional shape of the cross-sectional shape and the shape of the bottom portion of the fixed base.
  • the adjusting rod is provided with an inner hollow hollow cavity, and the adjusting rod is provided with a liquid discharging passage communicating with the hollow cavity, and the liquid discharging passage is integrated with the adjusting rod.
  • the outer wall of the adjusting rod is provided with a liquid flow passage connecting the liquid outlet of the fixed base and the liquid inlet of the adjusting rod, and the adjusting rod is provided with an inner hollow hollow cavity, and the adjusting rod is provided with The liquid outlet channel communicating with the hollow cavity, the liquid outlet channel and the adjusting rod are integrally formed.
  • the liquid outlet passage is perpendicular to the adjustment rod.
  • the fixed base liquid outlet and the adjusting rod channel are disposed in the same channel.
  • the adjusting rod is provided with at least one closed ring, and the closing ring protrudes between the surface of the adjusting rod and the adjusting rod passage to achieve sealing.
  • the closed ring has a semicircular or trapezoidal cross section.
  • the upper surface of the fixed base is provided with a blocking outer ring surrounding the outer periphery of the adjusting rod passage, and the auxiliary pressing plate is disposed around the outer periphery of the adjusting rod and can be embedded in the outer ring of the blocking outer ring to closely contact the inner wall of the outer ring.
  • the inner ring is blocked, and a barrier gasket is disposed between the outer ring and the inner ring.
  • the top end of the adjusting rod is provided with an auxiliary pressing plate, the adjusting rod passage protrudes from the upper surface of the fixed base, and a return spring is arranged between the auxiliary pressing plate and the fixed base.
  • an auxiliary fixing plate and a moving pressing plate are arranged above the auxiliary pressing plate, one end of the moving pressing plate is placed above the auxiliary pressing plate, and the other end of the moving pressing plate is hingedly fixed on the adjusting fixing seat, and the fixing seat is adjusted Slotted with chute
  • a pulley that can move horizontally along the chute, and the bottom of the pulley is pressed against the moving platen, and the driving platen is gradually pressed down by the auxiliary platen during the sliding process of the pulley.
  • a limit wheel coaxially disposed with the pulley is fixed on the pulley, and a plurality of cut-off card positions are arranged above or below the sliding slot, and the limit wheel is embedded in the cut-off card position during the sliding process of the pulley to be fixed. pulley.
  • both ends of the chute are provided with a pulley stop.
  • the adjustment fixing seat is provided with a flow rate tick line disposed along the axial direction of the chute.
  • the top of the adjusting rod is provided with an adjusting wheel
  • the fixing base is provided with a limiting stopper protruding from the surface of the fixed base and placed on the top of the adjusting wheel, by rotating the adjusting wheel Adjust the length and/or angle of the adjustment rod into the channel of the adjustment rod.
  • the adjusting rod extends outwardly to be provided with an adjusting wheel
  • the adjusting wheel extends upwardly and is provided with an adjusting wheel fixing shaft
  • the bottom of the adjusting rod is closely attached to the bottom of the adjusting rod channel
  • the fixing base is provided with a fixing device for accommodating the adjusting wheel fixing shaft hole
  • the adjusting wheel is axially rotatable along the adjusting rod passage
  • the angle of the adjusting rod in the adjusting rod passage is adjusted by rotating the adjusting wheel.
  • the top of the adjusting rod is provided with an adjusting wheel, and the adjusting rod is screwed with the adjusting rod passage, and the fixed base is provided with a surface protruding from the fixed base and placed on the adjusting wheel.
  • the top limit stop adjusts the length and angle of the adjustment rod into the adjustment rod passage by rotating the adjustment wheel.
  • a fixed bottom is provided on the fixed base.
  • the disc has a positioning groove along the upper surface of the positioning chassis, and at least one positioning protrusion is disposed under the adjusting wheel, and the adjusting wheel is embedded in the positioning groove by the positioning protrusion for positioning.
  • the positioning chassis is provided with a positioning groove whose height is sequentially changed, and the positioning protrusion is embedded in each positioning groove while adjusting the length of the adjusting rod extending into the liquid flow channel.
  • the adjusting rod and the adjusting rod passage are connected by screwing.
  • the adjusting wheel is provided with a flow rate calibration line provided around the adjusting wheel.
  • the two sides of the fixed base are provided with a regulating valve groove, and the top end of the adjusting rod is provided with a pawl that is wrapped around the fixed base and closely adheres to the groove wall.
  • the top end of the adjusting rod is provided with an adjusting ring.
  • the two opposite adjusting valve grooves are provided with a plurality of adjusting teeth from top to bottom, and the adjusting rod top end extends downwardly to cover the adjusting teeth which are fixed on both sides of the fixed base.
  • Two pawls are placed opposite each other.
  • the width of the two regulating valve grooves is larger than the width between the two pawls.
  • a locking card position is provided between the fixed base and the adjusting rod.
  • the fixing base and the adjusting rod are integrally formed, or the fixing base and the adjusting rod are independently arranged from each other.
  • the fixing base and the adjusting rod are integrally connected by the bendable connecting belt.
  • the invention has the beneficial effects that the infusion flow rate adjuster performs liquid guiding by fixing the base or fixing the base and the adjusting rod, and adjusting the cross-sectional area of the liquid flow channel for infusion at the speed regulating position by adjusting the movement of the rod along the adjusting rod channel
  • the device is fixed by the adjustment rod channel in the fixed base, so that the flow rate can be set better after the flow rate setting is completed, the flow rate does not drift and the operation process is simple, and the flow rate control is more Accurate, in line with the current clinical habits, a variety of application environments, to ensure the safety of infusion, can be applied to conventional infusion, applied in blood products, intravenous nutrition, mannitol and other high viscosity or high-precipitation liquid infusion, can be reduced Blocking opportunities.
  • Figure 1 is a front elevational view showing the internal structure of the liquid flow passage in the full circulation state in the first embodiment of the present invention
  • Figure 2 is a front elevational view showing the internal structure of the first embodiment of the present invention in a fully closed state
  • Figure 3 is a front elevational view showing the structure of the fixed base in the first embodiment of the present invention.
  • FIG. 4 is a schematic view showing the external structure marked with a scale according to the first embodiment of the present invention.
  • Figure 5 is a schematic view showing the overall structure of a chute using parallel rails in the first embodiment of the present invention
  • FIG. 6 is a schematic overall structural view of a second embodiment of the present invention after a cut-off card is disposed in a chute;
  • Figure 7 is a schematic view showing the structural state of the liquid flow passage in the full circulation state of the inside of the adjusting rod in the third embodiment of the present invention.
  • Figure 8 is a schematic view showing the structural state of the liquid flow passage fully closed when the inside of the adjusting rod is set in the middle cavity in the third embodiment of the present invention.
  • FIG. 9 is a schematic structural view of a fixed base when the liquid outlet of the fixed base and the adjusting rod channel are disposed in the same channel in the third embodiment of the present invention.
  • Figure 10 is a schematic view showing the overall structure of an adjusting rod in a third embodiment of the present invention.
  • Figure 11 is a schematic view showing the overall structure of the liquid flow channel in the full circulation state in the fourth embodiment of the present invention.
  • Figure 12 is a schematic view showing the overall structure of the liquid flow channel in the fully closed state in the fourth embodiment of the present invention.
  • Figure 13 is a plan view showing the structure of the adjusting rod in the fourth embodiment of the present invention.
  • Figure 14 is a front elevational view showing the structure of the adjusting rod in the fourth embodiment of the present invention.
  • Figure 15 is a front elevational view showing the structure of a fixed base in a fourth embodiment of the present invention.
  • Figure 16 is a plan view showing the structure of a fixed base according to a fourth embodiment of the present invention.
  • Figure 17 is a plan view showing the overall structure of a scale line in a fourth embodiment of the present invention.
  • Figure 18 is a schematic view showing the overall structure of the liquid flow channel in an open state in the fifth embodiment of the present invention.
  • Figure 19 is a schematic view showing the overall structure of the liquid flow channel in the fully closed state in the fifth embodiment of the present invention.
  • Figure 20 is a front elevational view showing the structure of the fixed base in the fifth embodiment of the present invention.
  • Figure 21 is a front elevational view showing the structure of the adjusting rod in the fifth embodiment of the present invention.
  • Figure 22 is a front elevational view showing the overall structure of the liquid flow path in the full circulation state in the sixth embodiment of the present invention.
  • Figure 23 is a side view showing the overall structure of the liquid flow path in a flow state in the sixth embodiment of the present invention.
  • Figure 24 is a side view showing the entire structure of a seventh embodiment of the present invention.
  • Figure 25 is a side view showing the entire structure of an eighth embodiment of the present invention.
  • Figure 26 is a front elevational view showing the structure of the fixed base in the sixth, seventh and eighth embodiments of the present invention.
  • Figure 27 is a front elevational view showing the overall structure of the sixth, seventh, and eighth embodiments of the present invention in a fully closed state;
  • Figure 28 is a schematic view showing the overall structure of the adjusting rod and the pawl in the eighth embodiment of the present invention.
  • Figure 29 is a schematic view showing the integrated assembly of the embodiment of the present invention.
  • Figure 30 is a schematic view showing the integrated assembly process of the embodiment of the present invention.
  • the present invention is an infusion flow rate adjuster comprising a fixed base 1 provided with a fixed base inlet port and a fixed base liquid outlet, and an adjustment rod 2 mounted on the fixed base 1;
  • the adjusting rod 2 is provided with a liquid flow channel 11 connected between the fixed base liquid inlet and the fixed base liquid outlet;
  • the fixed base 1 is provided with an adjusting rod passage 12;
  • the adjusting rod channel 12 is provided a movable adjusting rod 2, the adjusting rod 2 and the adjusting rod passage 12 are watertightly sealed; by adjusting the bottom portion of the fixed base 1 and the overlapping portion area adjusting liquid of the cross-sectional shape of the liquid flow passage 11 on the adjusting rod 2
  • the flow passage 11 has a cross-sectional area through which the liquid passes.
  • An infusion flow rate adjuster comprising a fixed base 1 provided with a fixed base inlet port and a fixed base liquid outlet, and an adjustment rod 2 mounted on the fixed base 1;
  • the rod 2 is provided with a liquid flow passage 11 connected between the fixed base liquid outlet and the adjusting rod inlet;
  • the fixed base 1 is provided with an adjusting rod passage 12;
  • the adjusting rod passage 12 is movable Adjusting rod 2, the adjusting rod 2 and the adjusting rod passage 11 are watertightly sealed;
  • the adjusting rod 2 is provided with an adjusting rod inlet port and an adjusting rod liquid outlet communicating with the fixed base liquid outlet;
  • the area of the bottom portion of the fixed base 1 and the overlapping portion of the cross-sectional shape of the liquid flow path 11 on the adjusting rod 2 adjust the cross-sectional area through which the liquid passage 11 supplies the liquid.
  • the infusion flow rate adjuster performs liquid guiding by fixing the base 1 or the fixed base 1 and the adjusting rod 2, and moves the adjusting rod 2 along the adjusting rod passage 11 to adjust the cross section of the liquid flow path 11 for infusion at the speed regulating position.
  • the area, thereby changing the infusion flow rate in the infusion device, the device is fixed by the adjustment rod channel in the fixed base, so that the flow rate can be set better after the flow rate setting is completed, the flow rate does not drift and the operation process is simple, and the flow rate is controlled.
  • the fixed base is provided with an adjusting rod passage communicating with the fixed base liquid line.
  • a movable adjustment rod 2 is disposed in the adjustment rod passage 12.
  • the adjustment rod channel 12 is disposed perpendicular to the flow channel 11.
  • At least one of the flow channels 11 is provided.
  • the liquid flow channels 11 are spaced apart concave A groove, or a groove whose cross-sectional area changes continuously.
  • the cross section of the groove may be triangular, semi-circular, rectangular, tubular or other shape.
  • the minimum cross-sectional area of the liquid line on the fixed base 1 is greater than or equal to the maximum cross-sectional area of the liquid flow path 11.
  • the adjustment rod 2 is intercepted by changing the length and/or angle of the bottom embedded adjustment rod passage 12, the cross-sectional shape of the liquid flow passage 11 on the adjustment rod 2 and the bottom shape of the fixed base 1
  • the liquid flow channel 11 can be completely intercepted by the fitting; when the cross-sectional shape of the liquid flow channel 11 on the adjusting rod 2 and the bottom shape of the fixed base 1 are zero, the liquid flow channel 11 can flow through the liquid to the maximum liquid flow.
  • the adjusting rod 2 is provided with at least one liquid flow channel 11 configured as a through hole, and the adjusting rod 2 changes the cross section of the through hole on the adjusting rod 2 and the bottom shape of the fixed base 1 by vertical movement. The area of the intersection is adjusted to adjust the flow rate.
  • the adjusting rod 2 is provided with a liquid flow channel 11 whose cross-sectional area is continuously changed, and the adjusting rod 2 changes the adjusting rod 2 by vertical movement or horizontal rotation or spiral motion along the adjusting rod passage 12.
  • the flow velocity is adjusted by the cross-sectional shape of the upper liquid flow path 11 and the area of the intersection between the bottom shape of the fixed base 1.
  • the adjusting rod 2 is provided with an inner hollow hollow cavity 22, and the adjusting rod 2 is provided with a liquid discharging passage 23 communicating with the hollow cavity 22, and the liquid discharging passage 23 is integrally formed with the adjusting rod 2.
  • the outer wall of the adjusting rod 2 is provided with a liquid flow channel connecting the liquid outlet of the fixed base 1 and the liquid inlet of the adjusting rod 2, and the adjusting rod 2 is provided with a hollow hollow inside. a cavity 22, the adjusting rod 2 is provided with a liquid outlet communicating with the hollow cavity 22 The passage 23 is formed integrally with the adjustment rod 2.
  • the outlet passage 23 is perpendicular to the adjustment rod 2.
  • the fixed base liquid outlet and the adjustment rod passage 12 are disposed in the same passage.
  • the adjustment rod 2 is provided with at least one closure ring 24 which protrudes between the surface of the adjustment rod 2 and the adjustment rod passage 12 for sealing.
  • the closed loop 24 is semi-circular or trapezoidal in cross section.
  • the upper surface of the fixed base 1 is provided with a blocking outer ring 121 surrounding the periphery of the adjusting rod passage 12, and the auxiliary pressing plate is provided around the periphery of the adjusting rod 2 and can be embedded in the blocking outer ring 121.
  • the inner ring 122 is blocked from the inner wall of the outer ring 121, and a barrier gasket 123 is disposed between the outer ring 121 and the inner ring 122.
  • the top end of the adjusting rod 2 is provided with an auxiliary pressing plate 3, and the adjusting rod passage 12 protrudes from the upper surface of the fixed base 1, and a return spring 31 is disposed between the auxiliary pressing plate 3 and the fixed base 1.
  • the auxiliary fixing plate 3 is provided with an adjusting fixing seat 4 and a moving pressing plate 41.
  • One end of the moving pressing plate 41 is placed above the auxiliary pressing plate 3, and the other end of the moving pressing plate 41 is hingedly fixed to the adjusting fixing seat 4
  • the adjusting base 4 is provided with a sliding slot 42.
  • the sliding slot 42 is provided with a pulley 43 horizontally movable along the sliding slot 42. The bottom of the pulley 43 is pressed against the moving pressing plate 41, and the driving platen is driven down during the sliding process of the pulley 43. Press the auxiliary platen 3.
  • the pulley 43 is fixed coaxially with the pulley 43.
  • the limit wheel is disposed above or below the chute 42 with a plurality of cut-off latches 44.
  • the pulley 43 is inserted into the cut-off card position 44 during the sliding of the pulley 43 to fix the pulley 43.
  • the chute 42 is provided with pulley stops 45 at both ends.
  • the adjustment mount 4 is provided with a flow rate calibration line disposed along the axial direction of the chute 42.
  • the minimum cross-sectional area of the liquid line on the fixed base 1 is greater than or equal to the maximum cross-sectional area of the liquid flow path, and the fixed base inlet port and the fixed base liquid outlet pass through the adjusting rod 2
  • the flow channel 11 is in communication, and the regulating rod 2 is provided with a liquid flow channel 11 connected between the fixed base liquid outlet and the adjusting rod inlet.
  • At least one of the flow passages 11 is provided, and the liquid flow passages 11 are preferably spaced-apart grooves or grooves having a continuously varying cross-sectional area.
  • the cross section of the groove may be triangular, semi-circular, rectangular, tubular or other shape.
  • the fixed base 1 accommodates a fixed base liquid inlet and a fixed base liquid outlet respectively connected to the infusion pipe, and the fixed base liquid inlet and the fixed base liquid outlet communicate with each other through the liquid flow channel 11 of the adjusting rod 2; or the fixed base 1
  • the fixed base inlet port and the adjusting rod 2 provided with the infusion pipe are provided with an adjusting rod outlet port communicating with the infusion pipe, and the adjusting rod inlet port and the fixed base liquid outlet are connected through the liquid flow channel 11 on the adjusting rod 2.
  • the fixed base 1 is provided with an adjustment fixing seat 4 in which a sliding groove 42 is accommodated, and the arrangement of the adjustment fixing seat 4 can well fix the components of the pulley 43, the moving platen 41 and the like.
  • both ends of the chute 42 on the adjusting fixing base 4 are provided with a cut-off card position 44 for limiting the displacement of the pulley 43.
  • the cut-off card position 44 is disposed by the movement of the movable platen 41 by restricting the excessive displacement of the pulley 43, and the maximum displacement of the pulley 43 can be well defined.
  • the movement plate 41 limits the auxiliary plate, is more convenient to handle, reduces misoperation and prevents the adjustment rod 2 from coming out.
  • the infusion regulator is provided with an adjustment rod 2 which can change the position and change the cross-sectional area of the liquid flow path 11 for the passage of the liquid with different positions.
  • the adjustment rod 2 is preferably provided with various embodiments such as an open or semi-open structural adjustment rod 2, or an adjustment rod 2 having a hollow structure.
  • the adjusting rod 2 adopts a cylindrical shape, and the outer diameter of the adjusting rod 2 is greater than or equal to the inner diameter of the adjusting rod passage 12, and can be pressed into the adjusting rod passage 12 with a little force during installation, so that the adjusting rod 2 and the adjusting rod passage 12 can closely cooperate with each other.
  • the adjusting rod 2 can also adopt a rectangular parallelepiped or other shape, and the outer diameter of the adjusting rod 2 is slightly larger than or equal to the inner diameter of the adjusting rod passage 12, so that the adjusting rod 2 can be broken without being easily installed.
  • the adjustment rod 2 is provided with an outwardly bulging closure ring 24, at least one of which is a complete closed loop surrounding the adjustment rod 2, disposed at the rear of the adjustment rod 2, the outer diameter of the closure ring 24 being larger than the outer diameter of the adjustment rod 2.
  • the closure ring 24 is preferably provided with two or more, and the arrangement of the closure ring 24 provides for a better seal between the adjustment rod 2 and the adjustment rod passage 12.
  • the cross section of the closure ring 24 is preferably semi-circular, or it may be trapezoidal or other shape.
  • the fixed base 1 accommodates a fixed base liquid inlet and a fixed base liquid outlet respectively connected to the infusion pipe, and the fixed base liquid inlet and the fixed base liquid outlet communicate with each other through the liquid flow channel 11 of the adjusting rod 2.
  • the adjustment rod 2 preferably adopts an open or semi-open structure.
  • the adjusting rod 2 adopts an open or semi-open structure, and the adjusting rod 2 is provided with a through hole as a liquid flow path 11, and the through hole is provided with one or a distribution of intervals and different apertures.
  • the through hole is one
  • the shape of the bottom of the fixed base 1 corresponds to the through hole on the adjusting rod 2
  • the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire through hole.
  • the through holes are spaced apart, different
  • the aperture is set, the through holes of different apertures correspond to the shape of the bottom of the fixed base 1, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the cross-sectional area of the entire largest through hole.
  • the minimum cross-sectional area of adjacent through holes is sequentially increased in one direction, such as increasing from top to bottom, such that the through holes on the adjusting rod 2 and the bottom shape on the fixed base 1 have the same cross-sectional area. Increase or decrease.
  • the infusion flow rate can be sequentially increased or decreased to facilitate the infusion to adjust the flow rate.
  • the cross section of the through hole may be triangular, circular or other shape.
  • the fixed base 1 is provided with a fixed base liquid inlet connected to the infusion pipe
  • the adjusting rod 2 is provided with an adjusting rod liquid outlet connected to the infusion pipe
  • the adjusting rod 2 is provided with an adjusting rod inlet port communicating with the fixed base liquid outlet
  • the adjusting rod outlet port, the adjusting rod inlet port and the fixed base outlet port are connected through the liquid flow channel 11 on the adjusting rod 2, wherein the adjusting rod 2 is preferably a hollow structure, and the adjusting rod 2 wall can be completely sealed.
  • An opening is provided at the end of the adjusting rod 2; or the outer wall of the adjusting rod 2 is provided with a side wall groove as a liquid line; or the outer wall of the adjusting rod 2 is provided with at least one through hole, and the through hole is provided with one or spaced apart, different apertures Settings.
  • the fixed base 1 can also be provided with a fixed base liquid outlet connected to the infusion pipe, the adjusting rod 2 is provided with an adjusting rod inlet port communicating with the infusion pipe, and the adjusting rod 2 is provided with an adjusting rod connected to the fixed base inlet port.
  • the mouth and the adjusting rod outlet port, the adjusting rod 2 preferably adopts a hollow structure, and the fixed base liquid inlet port and the adjusting rod liquid outlet port are still connected through the liquid flow channel 11 on the adjusting rod 2, and the connection relationship of each channel can be similarly changed.
  • the fixed base 1 can adjust the infusion flow rate separately with the single groove of the adjusting rod 2 as the liquid flow channel 11, or can adjust the infusion flow rate together with the two or more grooves on the adjusting rod 2 as the liquid flow channel 11; Or set more than one in the fixed base
  • the liquid line cooperates with various combinations of one or more grooves on the conditioning rod 2 as the flow channel 11 to adjust the infusion flow rate.
  • the adjustment rods 2 may have the same structure or different structures. It is even possible to employ two or more structural patterns of the same structure or different structures on the same adjustment rod 2. In this way, the cross-sectional area of the flow channel 11 can be adjusted more precisely, and the infusion flow rate can be more precisely adjusted.
  • the adjusting rod 2 extends rearwardly out of the auxiliary plate for restricting the disengagement of the elastic member and the adjustment of the adjusting rod 2 by the movement of the pressing plate 41.
  • the auxiliary plate preferably has an upper circular arc shape to facilitate correspondence with the movable platen 41 at different angles.
  • a return spring 31 that pushes the separation of the two is provided between the adjusting rod 2 and the fixed base 1.
  • the adjuster is provided with a movable platen 41 which is fixed to the holder on the side of the hinge position of the movable platen 41, the corresponding auxiliary plate below, the upper corresponding pulley 43, and a high-friction hard non-deformable material.
  • the moving platen 41 is moved about the fixed axis of the moving platen 41.
  • the setting of the moving platen enlarges the adjustment movement distance of the adjustment rod 2, makes the infusion flow rate adjustment smoother, improves the speed regulation performance of the infusion regulator, and also avoids the inflow velocity drift of the pulley 43 due to inactive sliding.
  • the adjuster is provided with a movable outer peripheral pulley 93 with a non-slip groove.
  • the arrangement of the pulley 43 is very convenient for the operator to adjust the infusion flow rate.
  • the pulley 43 is provided with a pulley shaft symmetrically disposed on both sides of the pulley 43.
  • the retainer is provided with a chute 42 for moving the pulley shaft, and the chute 42 can effectively control the movement track of the pulley shaft.
  • the chute 42 adopts the one-side or double-side wavy guide rail mode
  • the discontinuous constant speed adjustment of the flow rate of the liquid flow passage 11 can be realized.
  • the chute 42 adopts the parallel rail mode the flow channel 11 can be adjusted steplessly and at a constant speed, Easy to adjust the infusion flow rate.
  • the adjuster is provided with a scale panel and a flow rate indicator.
  • the scale panel is fixed on the fixed base 1.
  • the corresponding flow rate indicator moves synchronously with the pulley 43, and the two cooperate to indicate the infusion flow rate and the infusion flow state of the infusion set.
  • a blocking device for preventing internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside.
  • the barrier device is composed of a barrier inner ring 122, a barrier gasket 123, and a barrier outer ring 121.
  • Other barrier structures such as flexible barrier films can also be used.
  • the adjusting wheel is provided with a blocking inner ring 122 surrounding the adjusting rod 2, which is circular, and the blocking inner ring 122 is preferably the same axis as the adjusting rod 2.
  • a barrier gasket 123 is disposed between the barrier inner ring 122 and the barrier outer ring 121.
  • the barrier gasket 123 is annular and placed on the fixing groove of the barrier gasket 123 blocking the outer ring 121 to serve as a sealing function.
  • the fixed base 1 is provided with a blocking outer ring 121 which is tightly sleeved and blocks the inner ring 122 and has a sealing groove 123 fixing groove.
  • the barrier outer ring 121 is preferably circular in shape and has the same axis as the adjustment rod passage 12.
  • the barrier device can also adopt a flexible barrier film. One side of the flexible barrier film is fixed on the auxiliary plate, and the other side is fixed on the fixed base 1 and surrounds the adjustment rod 2, the adjustment rod passage 12 and the elastic member.
  • the barrier inner ring 122, the barrier gasket 123 and the barrier outer ring 121 cooperate to effectively separate the internal components from the outside, and the application of the blocking device can well prevent the internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside. Internal components such as the adjustment rod 2 and the adjustment rod passage 12 are kept sterile during use.
  • the application of the barrier device also maintains the positional state of the adjustment rod 2 and the adjustment rod passage 12 well.
  • the top of the adjusting rod 2 is provided with an adjusting wheel 5
  • the fixed base 1 is provided with a surface protruding from the surface of the fixed base 1 and placed on the top of the adjusting wheel 5.
  • the limit stop 51 adjusts the length and/or angle of the adjustment rod into the adjustment rod passage 12 by rotating the adjustment wheel 5.
  • the adjusting rod 2 extends outwardly with an adjusting wheel 5, and the adjusting wheel 5 extends upwardly to be provided with an adjusting wheel fixing shaft 53, and the bottom of the adjusting rod 2 is closely attached to the adjusting rod passage
  • the fixed base 1 is provided with a fixer 54 for accommodating a fixed axle hole of the adjusting wheel.
  • the adjusting wheel 5 can be axially rotated along the adjusting rod passage 12, and the adjusting rod 2 is adjusted by rotating the adjusting wheel 5. Adjust the angle within the rod channel 12.
  • the top of the adjusting rod 2 is provided with an adjusting wheel 5, and the adjusting rod 2 is screwed with the adjusting rod passage 12, and the fixing base 1 is provided with a surface protruding from the fixed base 1
  • the limit stop 51 is placed on the top of the adjustment wheel 5, and the length and angle of the adjustment rod into the adjustment rod passage 12 are adjusted by rotating the adjustment wheel 5.
  • the fixed base 1 is provided with a ring positioning chassis 52.
  • a positioning groove is arranged along the upper surface of the positioning chassis 52.
  • At least one positioning protrusion is disposed below the adjusting wheel 5.
  • the adjusting wheel 5 passes through The positioning protrusion is embedded in the positioning groove for positioning.
  • the positioning chassis 52 is provided with a positioning groove whose height is sequentially changed.
  • the positioning protrusion is embedded in each positioning groove while adjusting the length and angle of the adjusting rod 2 extending into the liquid flow channel 11. .
  • the positioning chassis 52 is provided with a positioning groove with a continuously varying height.
  • the positioning protrusions are embedded in different height positioning grooves while adjusting the length and angle of the adjusting rod extending into the liquid flow channel 11. .
  • the adjustment rod 2 passes between the adjustment rod passage 12 Threaded connection.
  • the adjustment wheel 5 is provided with a flow rate tick line provided around the adjustment wheel 5.
  • the adjusting rod passage 12 is provided with an internal thread, and the adjusting rod 2 is provided with an external thread.
  • the fixed base 1 is provided with a limiting member 51 for defining the displacement of the adjusting rod 2.
  • the setting of the limiting member 51 can well define the maximum displacement of the adjusting rod 2, facilitate the manipulation, reduce the erroneous operation and prevent the adjusting rod 2 from coming off.
  • the infusion regulator is provided with an adjustment rod 2 which can change the position and change the cross-sectional area of the liquid flow passage 11 for liquid passage with different positions, and is an open or semi-open structure adjustment rod 2, or an adjustment rod 2 having a hollow structure.
  • the adjusting rod 2 adopts a cylindrical shape, and the outer diameter of the adjusting rod 2 is greater than or equal to the inner diameter of the adjusting rod passage 12, and can be pressed into the adjusting rod passage 12 with a little force during installation, so that the adjusting rod and the adjusting rod passage 12 can closely cooperate with each other to avoid Seepage and leakage.
  • the adjustment rod 2 can also be in the shape of a rectangular parallelepiped or other shape.
  • the outer diameter of the adjusting rod 2 is slightly larger than or equal to the inner diameter of the adjusting rod passage 12, so that the adjusting rod 2 can be broken without being easily installed.
  • Adjusting the internal thread on the rod passage 12 and the external thread on the adjusting rod can facilitate the speed regulation, and can better match the adjusting rod 2 and the adjusting rod passage 12 to each other, thereby better avoiding leakage and leakage. .
  • the adjusting rod 2 When the adjusting rod 2 adopts an open or semi-open structure, the adjusting rod 2 is provided with a through hole as a liquid flow path 11, and the through hole is provided with one or a distribution of intervals and different apertures.
  • the through hole is one, the shape of the bottom of the fixed base 1 corresponds to the through hole on the adjusting rod 2, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire through hole.
  • the through holes are spaced apart, no When the same aperture is set, the through holes of different apertures correspond to the shape of the bottom of the fixed base 1, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the cross-sectional area of the entire largest through hole.
  • the minimum cross-sectional area of adjacent through holes is sequentially increased in one direction, such as increasing from top to bottom, such that the through holes on the adjusting rod 2 and the bottom shape on the fixed base 1 have the same cross-sectional area. Increase or decrease.
  • the infusion flow rate can be sequentially increased or decreased to facilitate the infusion to adjust the flow rate.
  • the cross section of the through hole may be triangular, circular or other shape.
  • the wall of the adjusting rod 2 can be completely sealed, and an opening as a liquid flow path is provided at the end of the adjusting rod 2; or the side wall of the adjusting rod 2 is provided with a side wall groove as a liquid line; or adjustment
  • the outer wall of the rod 2 is provided with at least one through hole, and the through hole is provided with one or a distribution of intervals and different apertures.
  • the adjustment rod 2 adjusts the flow rate by changing the position along the adjustment rod passage 12 and changing the area of the intersection of the cross section of the liquid flow passage 11 on the adjustment rod 2 with the bottom shape on the fixed base 1 with different positions.
  • the movement trajectory of the adjustment rod 2 is sequentially deviated in one direction, such as increasing from the top to the bottom or the clockwise direction, such that the cross-sectional area of the adjustment rod 2 and the liquid flow passage 11 sequentially increases or decreases.
  • the infusion flow rate can be sequentially increased or decreased, and the infusion flow rate can be conveniently adjusted.
  • the adjusting rod 2 extends outwardly from the adjusting wheel 5.
  • the adjusting wheel 5 is entirely in the shape of a disk.
  • the center of the adjusting wheel 5 is arranged on the adjusting rod 2.
  • the adjusting rod 2 serves as the rotating shaft of the adjusting wheel 5.
  • the adjusting wheel 5 is adjusted.
  • the adjusting rod 2 is pivoted and rotates relative to the fixed base 1.
  • the adjusting wheel 5 extends upwardly with an adjusting wheel fixing shaft, and the fixing base 1 is provided with a fixing device for accommodating the adjusting wheel fixing shaft hole. Adjustable wheel fixing shaft and retainer settings for good fixed adjustment Round 5.
  • the fixed base 1 extends outwardly with a positioning chassis 52.
  • the adjusting wheel 5 serves as a positioning movable plate, and a positioning device is disposed between the positioning chassis 52 and the positioning movable plate.
  • the positioning device may be a matching positioning protrusion and a positioning groove.
  • the positioning device is a hemispherical protrusion and a hemispherical depression which are matched with each other, and the positioning device is a matching protrusion and a stepped height-changing depression, or the positioning device is a matching protrusion and a continuous height change. Depression.
  • the setting of the positioning device can indicate whether the speed regulation is in place, facilitate the setting of the flow rate, avoid errors during adjustment, and affect the progress of the infusion.
  • the positioning device can also be set to ensure that the flow rate will not drift easily after the flow rate is set.
  • the height of the positioning groove sequentially changes in one direction, such as increasing from top to bottom, such that the cross-sectional area of the circular through hole 21 and the liquid flow path 11 on the adjusting rod 2 sequentially increases or decreases. When the flow rate is adjusted, the flow rate can be sequentially increased or decreased to facilitate the adjustment of the flow rate.
  • the positioning groove is distributed in a stepwise manner along the circumference, and the height of the central point of the positioning groove is gradually decreased in the clockwise direction.
  • the positioning protrusion cooperates with the corresponding positioning groove to drive the adjustment.
  • the rod 2 is displaced accordingly to achieve the purpose of setting the flow rate.
  • the positioning groove adopts a depression having a stepped height variation
  • discontinuous constant speed adjustment of the flow rate of the liquid flow channel 11 can be achieved.
  • the positioning groove adopts a depression having a continuous height change the stepless constant speed adjustment of the liquid flow path 11 can be realized, and the flow rate can be adjusted more easily.
  • the above regulator is provided with a scale panel and a flow rate indicator.
  • the scale panel is fixed on the fixed base 1, and the corresponding flow rate indicator moves synchronously with the adjustment wheel 5, and the two cooperate to indicate Read the infusion flow rate and infusion flow status of the infusion set.
  • a blocking device for preventing internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside.
  • the fixed base 1 is provided with adjusting valve grooves on both sides thereof, and the top end of the adjusting rod 2 is provided with a pawl 6 which is wrapped around the fixed base 1 and is closely attached to the groove wall.
  • the top end of the adjustment rod 2 is provided with an adjustment ring 61.
  • the two opposite adjusting valve grooves are provided with a plurality of adjusting teeth 62 from top to bottom, and the top end of the adjusting rod 2 extends downwardly to adjust the outer surface of the fixing base 1 to be fastened on both sides.
  • Two pawls 6 are disposed opposite each other on the teeth 62.
  • the width of the two adjustment valve grooves is greater than the width between the two pawls 6.
  • a locking card is provided between the fixed base 1 and the adjusting rod 2.
  • the setting of the locking card position can well define the maximum displacement of the adjusting rod, which is convenient for manipulation and reduces misoperation.
  • the fixed base 1 and the adjusting rod 2 are integrally formed, or the fixed base 1 and the adjusting rod 2 are disposed independently of each other.
  • the fixed base 1 and the adjusting rod 2 are integrally connected by a bendable connecting strip 7.
  • the integrated production of the connecting belt can reduce the product precision error caused by different injection molding conditions, and improve the matching ratio of the adjusting rod 2 and the adjusting rod passage 12.
  • the fixed base 1 is provided with a regulating valve groove, when When the adjustment valve groove is a wave-shaped groove, the different adjustment valve grooves have different distances from the upper plane of the adjustment rod passage 12 on the fixed base 1.
  • the adjusting valve groove is distributed in a wave shape, the lengths of the different adjusting valve grooves are the same, the two sides are arranged in parallel, and the pawls 6 are respectively fixed with the corresponding adjusting valve grooves.
  • the adjacent adjusting valve grooves have different distances from the upper surface of the fixed rod passage 12 of the fixed base 1 in a direction, such as increasing from top to bottom, so that the adjusting rod 2 can be adjusted when the infusion flow rate is adjusted.
  • the cross section of the adjustment valve groove may be toothed, stepped, wavy or other shape.
  • the groove of the regulating valve groove is matched with the arrangement of the different structural adjusting rods 2, and the discontinuous constant speed adjustment of the infusion flow rate of the liquid flow channel 11 can be realized.
  • the regulating valve groove is a groove extending in a plane
  • the regulating valve groove is preferably rectangular, and the two sides are arranged in parallel symmetry, and the pawls 6 are respectively fixed with the corresponding regulating valve grooves.
  • the adjacent regulating valve grooves have different distances from the upper surface of the fixed rod passage 12 of the fixed base 1 in a direction, such as increasing from top to bottom, so that when the infusion flow rate is adjusted, the The adjustment rod 2 sequentially increases or decreases the adjustment displacement to facilitate adjustment of the infusion flow rate.
  • the cross section of the adjustment valve groove may be a straight line, an arc or other shape.
  • the adjusting rod 2 is provided with a pawl 6 which is interlocked with the adjusting rod 2.
  • the fixed base 1 is provided with a regulating valve groove, and the adjusting rod 2 is provided with a pawl 6 which cooperate with each other to determine the position of the adjusting rod 2.
  • the adjusting valve groove is preferably two paths, and the pawl 6 is preferably two.
  • the spacing between the two adjusting valve grooves is greater than the spacing between the corresponding two pawls 6, so that the pawl 6 can more easily grasp the adjusting valve groove, Strengthen the robustness of both operations.
  • the combination position of the two has a combination of two or more.
  • the combination of the valve groove and the pawl 6 can facilitate the setting of the infusion flow rate, and can also ensure that the infusion flow rate drifts without changing easily after setting the infusion flow rate.
  • the cross-section of the pawl 6 may be "L" shaped, rectangular, triangular, semi-circular or other shape, and the flow rate regulating valve is provided with an adjustment ring 61 that facilitates gripping and operation of the flow rate regulating valve.

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Abstract

一种输液流速调节器，包括：固定底座（1）和调节棒（2）。固定底座（1）上设有进液口、出液口和调节棒通道（12），调节棒（2）上设有在固定底座（1）进液口和出液口之间的液流通道（11），调节棒（2）沿调节棒通道（12）运动以调整液流通道（11）供液体通过的横截面积，从而改变输液装置中的输液流速。该输液流速调节器使得流速不会发生漂移，流速控制更为精确，对高粘稠度液体输注时可减少堵塞。

Description

一种输液流速调节器 技术领域
本发明涉及医疗器械领域，特别是涉及一种输液流速调节器。
背景技术
输液治疗是临床的一种重要治疗手段，输液治疗会应用到各种不同类型输液调节器的输液器或输液泵，以适用于不同的场合。
现有的普通输液调节器的基本原理大致相同，基本是在输液导管外设有滑轮，主要通过滑轮挤压输液导管，使其形状发生改变，进而改变其液流通道的横截面积，即通过改变输液导管液流通道的横截面积来调节输液流速。
普通输液调节器可单手操作，可以实现输液流速的无级调节，但是由于输液导管为带弹性且表面光滑的软管，在输液过程中，会将滑轮从设定位置推移，甚至推离至完全滑脱，使输液流速失去控制，超出预定速度的输液流速在临床上会导致病人心衰、死亡等严重医疗事故，形成重大安全隐患。临床上通过增加护理人员巡视、校对次数的方法以发现输液流速漂移并及时进行纠正，避免上述情况出现时的危害，但该方法明显增加护理人员工作量。
同时因为输液导管存在弹性和输液导管受长时间挤压后会发生变形，不能恢复原状，在临床实际应用时，输液导管的液流通道横截面积非可预见性判断，令操作人员不能根据滑轮位置来判断输液导管受挤压后输液导管的横截面积大小，进而不能判断输液流速，每次调 整时需操作者配合计时器多次人工核对才可以达到预期值，费时费力且不误差较大，增加护理人员的工作量，尤其在临床输液工作量大的时候，增加病人轮候时间，耽误治疗。流量的调节更多依赖于操作者的经验，而非流速调节器本身，在需要精确控制输液流速的时候，无法应用。
临床上现有的普通流量设定式输液器采用预设横截面积连续变化且形状固定的液流通道，出液口通过液流通道与进液口相通，通过进液口与出液口之间对应液流通道横截面积不同，达到调节输液流速的目的。
流量设定式输液调节器可实现输液流速的无级调节，可解决输液流速漂移，但工艺复杂，需双手操作，制作成本较高，且流速刻度呈环形曲面设计，需手动旋转方可观察流量刻度，不方便护士巡查输液情况。在输注血液制品、静脉营养、甘露醇等高粘滞度或高析出度液体时，因预设液流通道横截面积较小且行程较长，容易堵塞，故临床上难以普及。
在临床实际应用中，不同药液的单滴体积会有所不同，普遍为0.043～0.05ml之间，特殊药物更超过出此范围。现有流量设定式调节器不能满足药液单滴体积的变化，故临床输液时，按“滴”进行操作会更为精确，临床普遍由护理人员参考不同药液的单滴体积进行输液流速调节。
在需要精确控制输液流速时，普遍使用输液泵，但是输液泵需在有电源的情况下使用，携带不方便，价格高昂，不利推广，且操作过 于复杂，不够直观简便。
发明内容
本发明的目的在于提供一种操作方便且能更精确控制输液流速的输液流速调节器。
本发明所采取的技术方案是：
一种输液流速调节器，包括设有固定底座进液口和固定底座出液口的固定底座以及安装在所述固定底座上的调节棒；所述调节棒上设有连接在固定底座进液口和固定底座出液口之间的液流通道；所述固定底座上设有调节棒通道；所述调节棒通道内设有可动的调节棒，所述调节棒与调节棒通道间水密性密封；通过调整所述固定底座上底部形状与调节棒上液流通道的截面形状的重叠部分面积调整液流通道供液体通过的横截面积。
一种输液流速调节器，包括设有固定底座进液口和固定底座出液口的固定底座以及安装在所述固定底座上的调节棒；所述调节棒上设有连接在固定底座出液口和调节棒进液口之间的液流通道；所述固定底座上设有调节棒通道；所述调节棒通道内设有可动的调节棒，所述调节棒与调节棒通道间水密性密封；所述调节棒上设有与固定底座出液口相通的调节棒进液口和调节棒出液口；通过调整所述固定底座上底部形状与调节棒上液流通道的截面形状的重叠部分面积调整液流通道供液体通过的横截面积。
进一步作为本发明技术方案的改进，所述固定底座上设有与固定底座液体管路相通的调节棒通道。
进一步作为本发明技术方案的改进，调节棒通道垂直于液流通道设置。
进一步作为本发明技术方案的改进，所述液流通道至少设有一个。
进一步作为本发明技术方案的改进，所述液流通道为间隔分布的凹槽，或横截面积连续变化的凹槽。
进一步作为本发明技术方案的改进，固定底座上液体管路的最小横截面积大于或等于液流通道的最大横截面积。
进一步作为本发明技术方案的改进，所述调节棒通过改变底部嵌入调节棒通道的长度和/或者角度来进行截流，所述调节棒上液流通道的截面形状与固定底座上底部形状贴合，可对液流通道进行完全截流，当调节棒上液流通道的截面形状与固定底座上底部形状贴合为零时，液流通道可通过液体呈最大液流。
进一步作为本发明技术方案的改进，调节棒上设有至少一个结构为通孔的液流通道，调节棒通过竖向运动改变调节棒上通孔的截面与固定底座上底部形状间相交部分面积大小来调节流速。
进一步作为本发明技术方案的改进，所述调节棒上设有横截面积连续变化的液流通道，调节棒通过沿调节棒通道作竖向运动或水平旋转或螺旋运动改变调节棒上液流通道的截面形状与固定底座上底部形状间相交部分面积大小来调节流速。
进一步作为本发明技术方案的改进，调节棒内设有内部中空的中空腔，调节棒设有与中空腔相通的出液通道，出液通道与调节棒一体 制作。
进一步作为本发明技术方案的改进，调节棒外壁上设有连接固定底座出液口和调节棒进液口之间的液流通道，调节棒内设有内部中空的中空腔，调节棒设有与中空腔相通的出液通道，出液通道与调节棒一体制作。
进一步作为本发明技术方案的改进，出液通道垂直于调节棒。
进一步作为本发明技术方案的改进，固定底座出液口和调节棒通道设置为同一通道。
进一步作为本发明技术方案的改进，调节棒上设有至少一道封闭环，封闭环突出于调节棒表面与调节棒通道间实现密封。
进一步作为本发明技术方案的改进，封闭环的横截面为半圆形或者梯形。
进一步作为本发明技术方案的改进，固定底座的上表面设有环绕在调节棒通道外围的阻隔外环，辅助压板下方设有环绕在调节棒外围且可嵌入阻隔外环内紧贴阻隔外环内壁的阻隔内环，所述阻隔外环与阻隔内环间设有阻隔密封垫。
进一步作为本发明技术方案的改进，调节棒的顶端设有辅助压板，调节棒通道突出于固定底座的上表面，辅助压板与固定底座间设有复位弹簧。
进一步作为本发明技术方案的改进，辅助压板的上方设有调节固定座和运动压板，运动压板的一端置于辅助压板的上方，运动压板的另一端铰接固定在调节固定座上，调节固定座上设有滑槽，滑槽内设 有可沿滑槽水平运动的滑轮，滑轮的底部压迫在运动压板上，滑轮滑动过程中驱动压板逐步下压辅助压板。
进一步作为本发明技术方案的改进，滑轮上固定有与滑轮同轴设置的限位轮，滑槽的上方或者下方设有若干截止卡位，滑轮滑动过程中将限位轮嵌入截止卡位可固定滑轮。
进一步作为本发明技术方案的改进，滑槽的两端设有滑轮止位。
进一步作为本发明技术方案的改进，调节固定座上设有沿滑槽轴向设置的流速刻度线。
进一步作为本发明技术方案的改进，所述调节棒的顶部设有调节轮，所述固定底座上设有突出于固定底座表面并置于调节轮顶部的限位挡件，通过旋转所述调节轮调整调节棒伸入调节棒通道内的长度和/或者角度。
进一步作为本发明技术方案的改进，所述调节棒向外延伸设有调节轮，所述调节轮向上延伸设有调节轮固定轴，所述调节棒的底部紧贴在调节棒通道底部，所述固定底座上设有容纳调节轮固定轴孔的固定器，所述调节轮可沿调节棒通道作轴向旋转，通过旋转所述调节轮调整调节棒在调节棒通道内的角度。
进一步作为本发明技术方案的改进，所述调节棒的顶部设有调节轮，所述调节棒与调节棒通道间通过螺纹连接，所述固定底座上设有突出于固定底座表面并置于调节轮顶部的限位挡件，通过旋转所述调节轮调整调节棒伸入调节棒通道内的长度和角度。
进一步作为本发明技术方案的改进，固定底座上设有一圈定位底 盘，沿定位底盘的上表面设有一圈定位凹槽，调节轮的下方设有至少一个定位凸起，调节轮通过定位凸起嵌入定位凹槽内进行定位。
进一步作为本发明技术方案的改进，定位底盘上设有一圈高度依次变化的定位凹槽，定位凸起嵌入各定位凹槽内定位的同时调整调节棒伸入液流通道内的长度。
进一步作为本发明技术方案的改进，调节棒与调节棒通道间通过螺纹连接。
进一步作为本发明技术方案的改进，调节轮上设有环绕调节轮设置的流速刻度线。
进一步作为本发明技术方案的改进，固定底座的两侧设有调节阀凹槽，与所述调节棒顶端相连设有包覆在固定底座外紧贴凹槽壁运动的棘爪。
进一步作为本发明技术方案的改进，调节棒的顶端设有调节环。
进一步作为本发明技术方案的改进，两相对的调节阀凹槽上由上至下设有若干调节齿，调节棒顶端向下延伸设有包覆在固定底座外卡固在两侧的调节齿上相对设置的两道棘爪。
进一步作为本发明技术方案的改进，两调节阀凹槽的宽度大于两棘爪间的宽度。
进一步作为本发明技术方案的改进，所述固定底座和调节棒之间设有锁止卡位。
进一步作为本发明技术方案的改进，所述固定底座和调节棒为一体制作，或者所述固定底座与调节棒为彼此独立设置。
进一步作为本发明技术方案的改进，固定底座和调节棒通过可折弯件连接带连成一体。
本发明的有益效果：此输液流速调节器通过固定底座或者固定底座和调节棒来进行导液，通过调节棒沿调节棒通道运动来调整调速位置上用于输液的液流通道的横截面积，从而改变输液装置中的输液流速，此装置通过固定底座内的调节棒通道实现调节棒固定，使得流速设置完成后能更好的定位，流速不会发生漂移且操作过程简单，流速控制更为精确，符合临床现时使用习惯、多种应用环境，保证输液安全，可以应用于常规输液，应用在血液制品、静脉营养、甘露醇等高粘稠度或高析出度液体输注时，更可减少堵塞机会。
附图说明
下面结合附图对本发明作进一步说明：
图1是本发明第一实施例中液流通道内处于全流通状态时的内部结构主视图；
图2是本发明第一实施例中液流通道内处于全闭合状态时的内部结构主视图；
图3是本发明第一实施例中固定底座结构主视图；
图4是本发明第一实施例标有刻度尺的外部结构示意图；
图5是本发明第一实施例中滑槽采用平行导轨的整体结构示意图；
图6是本发明第二实施例中滑槽内设置截止卡位后的整体结构示意图；
图7是本发明第三实施例中调节棒内部为中空腔设置时液流通道全流通状态的结构状态示意图；
图8是本发明第三实施例中调节棒内部为中空腔设置时液流通道全闭合状态的结构状态示意图；
图9是本发明第三实施例中固定底座出液口和调节棒通道设置为同一通道时的固定底座结构示意图；
图10是本发明第三实施例中调节棒整体结构示意图；
图11是本发明第四实施例中液流通道处于全流通状态时的整体结构示意图；
图12是本发明第四实施例中液流通道处于全闭合状态时的整体结构示意图；
图13是本发明第四实施例中调节棒结构俯视图；
图14是本发明第四实施例中调节棒结构主视图；
图15是本发明第四实施例中固定底座结构主视图；
图16是本发明第四实施例固定底座结构俯视图；
图17是本发明第四实施例中设置刻度线的整体结构俯视图；
图18是本发明第五实施例中液流通道处于开放状态的整体结构示意图；
图19是本发明第五实施例中液流通道处于全闭合状态时的整体结构示意图；
图20是本发明第五实施例中固定底座结构主视图；
图21是本发明第五实施例中调节棒结构主视图；
图22是本发明第六实施例中液流通道处于全流通状态的整体结构主视图；
图23是本发明第六实施例中液流通道处于流通状态的整体结构侧视图；
图24是本发明第七实施例整体结构侧视图；
图25是本发明第八实施例整体结构侧视图；
图26是本发明第六、七、八实施例中固定底座结构主视图；
图27是本发明第六、七、八实施例中液流通道处于全闭合状态时整体结构主视图；
图28是本发明第八实施例中调节棒与棘爪整体结构示意图；
图29本发明实施例一体化组装前示意图；
图30本发明实施例一体化组装过程示意图。
具体实施方式
参照图1～图30，本发明为一种输液流速调节器，包括设有固定底座进液口和固定底座出液口的固定底座1以及安装在所述固定底座1上的调节棒2；所述调节棒2上设有连接在固定底座进液口和固定底座出液口之间的液流通道11；所述固定底座1上设有调节棒通道12；所述调节棒通道12内设有可动的调节棒2，所述调节棒2与调节棒通道12间水密性密封；通过调整所述固定底座1上底部形状与调节棒2上液流通道11的截面形状的重叠部分面积调整液流通道11供液体通过的横截面积。
一种输液流速调节器，包括设有固定底座进液口和固定底座出液口的固定底座1以及安装在所述固定底座1上的调节棒2；所述调节 棒2上设有连接在固定底座出液口和调节棒进液口之间的液流通道11；所述固定底座1上设有调节棒通道12；所述调节棒通道12内设有可动的调节棒2，所述调节棒2与调节棒通道11间水密性密封；所述调节棒2上设有与固定底座出液口相通的调节棒进液口和调节棒出液口；通过调整所述固定底座1上底部形状与调节棒2上液流通道11的截面形状的重叠部分面积调整液流通道11供液体通过的横截面积。
此输液流速调节器通过固定底座1或者固定底座1和调节棒2来进行导液，通过调节棒2沿调节棒通道11运动，来调整调速位置上用于输液的液流通道11的横截面积，从而改变输液装置中的输液流速，此装置通过固定底座内的调节棒通道实现调节棒2固定，使得流速设置完成后能更好的定位，流速不会发生漂移且操作过程简单，流速控制更为精确，符合临床现时使用习惯、多种应用环境，保证输液安全，可以应用于常规输液，应用在血液制品、静脉营养、甘露醇等高粘稠度或高析出度液体输注时，更可减少堵塞机会。
作为本发明优选的实施方式，所述固定底座上设有与固定底座液体管路相通的调节棒通道。所述调节棒通道12内设有可动的调节棒2。
作为本发明优选的实施方式，调节棒通道12垂直于液流通道11设置。
作为本发明优选的实施方式，所述液流通道11至少设有一个。
作为本发明优选的实施方式，所述液流通道11为间隔分布的凹 槽，或横截面积连续变化的凹槽。凹槽的横截面可以是三角形、半圆形、矩形、管状或其它形状。
作为本发明优选的实施方式，固定底座1上液体管路的最小横截面积大于或等于液流通道11的最大横截面积。
作为本发明优选的实施方式，所述调节棒2通过改变底部嵌入调节棒通道12的长度和/或者角度来进行截流，所述调节棒2上液流通道11的截面形状与固定底座1底部形状贴合，可对液流通道11进行完全截流；当调节棒2上液流通道11的截面形状与固定底座1底部形状贴合为零时，液流通道11可通过液体呈最大液流。
作为本发明优选的实施方式，调节棒2上设有至少一个结构为通孔的液流通道11，调节棒2通过竖向运动改变调节棒2上通孔的截面与固定底座1上底部形状间相交部分面积大小来调节流速。
作为本发明优选的实施方式，所述调节棒2上设有横截面积连续变化的液流通道11，调节棒2通过沿调节棒通道12作竖向运动或水平旋转或螺旋运动改变调节棒2上液流通道11的截面形状与固定底座1上底部形状间相交部分面积大小来调节流速。
作为本发明优选的实施方式，调节棒2内设有内部中空的中空腔22，调节棒2设有与中空腔22相通的出液通道23，出液通道23与调节棒2一体制作。
作为本发明优选的实施方式，所述调节棒2外壁上设有连接固定底座1出液口和调节棒2进液口之间的液流通道，所述调节棒2内设有内部中空的中空腔22，所述调节棒2设有与中空腔22相通的出液 通道23，所述出液通道23与调节棒2一体制作。
作为本发明优选的实施方式，出液通道23垂直于调节棒2。
作为本发明优选的实施方式，固定底座出液口和调节棒通道12设置为同一通道。
作为本发明优选的实施方式，调节棒2上设有至少一道封闭环24，封闭环24突出于调节棒2表面与调节棒通道12间实现密封。
作为本发明优选的实施方式，封闭环24的横截面为半圆形或者梯形。
作为本发明优选的实施方式，固定底座1的上表面设有环绕在调节棒通道12外围的阻隔外环121，辅助压板下方设有环绕在调节棒2外围且可嵌入阻隔外环121内紧贴阻隔外环121内壁的阻隔内环122，所述阻隔外环121与阻隔内环122间设有阻隔密封垫123。
作为本发明优选的实施方式，调节棒2的顶端设有辅助压板3，调节棒通道12突出于固定底座1的上表面，辅助压板3与固定底座1间设有复位弹簧31。
作为本发明优选的实施方式，辅助压板3的上方设有调节固定座4和运动压板41，运动压板41的一端置于辅助压板3的上方，运动压板41的另一端铰接固定在调节固定座4上，调节固定座4上设有滑槽42，滑槽42内设有可沿滑槽42水平运动的滑轮43，滑轮43的底部压迫在运动压板41上，滑轮43滑动过程中驱动压板逐步下压辅助压板3。
作为本发明优选的实施方式，滑轮43上固定有与滑轮43同轴设 置的限位轮，滑槽42的上方或者下方设有若干截止卡位44，滑轮43滑动过程中将限位轮嵌入截止卡位44可固定滑轮43。
作为本发明优选的实施方式，滑槽42的两端设有滑轮止位45。
作为本发明优选的实施方式，调节固定座4上设有沿滑槽42轴向设置的流速刻度线。
作为本发明的第一实施例，固定底座1上液体管路的最小横截面积大于或等于液流通道的最大横截面积，固定底座进液口和固定底座出液口通过调节棒2上液流通道11连通，调节棒2上设有连接在固定底座出液口和调节棒进液口之间的液流通道11。
液流通道11至少设有一个，液流通道11优选为间隔分布的凹槽，或横截面积连续变化的凹槽。凹槽的横截面可以是三角形、半圆形、矩形、管状或其它形状。
固定底座1容纳有分别连通输液管道的固定底座进液口和固定底座出液口，固定底座进液口和固定底座出液口通过调节棒2上液流通道11相连通；或固定底座1上设有连通输液管道的固定底座进液口和调节棒2上设有连通输液管道的调节棒出液口，调节棒进液口和固定底座出液口通过调节棒2上液流通道11相连通。
固定底座1上设有内部容纳有滑槽42的调节固定座4，调节固定座4的设置可以很好地固定滑轮43、运动压板41等部件。
上述调节器中，调节固定座4上的滑槽42两端设有限定滑轮43位移的截止卡位44。截止卡位44通过限制滑轮43的过度位移，配合运动压板41进行设置，可以很好地的限定滑轮43最大位移，配合 运动压板41对辅助板的限制，更便于操控，减少误操作和避免调节棒2脱出。
输液调节器上设有可改变位置并随不同位置改变液流通道11供液体通过的横截面积的调节棒2。调节棒2优选设有呈开放或半开放结构调节棒2，或呈中空结构的调节棒2等多种实施方式。
调节棒2采用圆柱状，调节棒2外径大于或等于调节棒通道12的内径，安装时稍加用力即可压入调节棒通道12，这样调节棒2与调节棒通道12可相互紧密配合，避免渗液、漏液，调节棒2也可以采用长方体或其他形状，调节棒2的外径稍大于或等于调节棒通道12的内径，这样安装方便的同时亦不会折断调节棒2。
调节棒2上设有向外膨出的封闭环24，至少一道，呈环绕调节棒2的完整闭合环，设置在调节棒2后部，封闭环24的外径大于调节棒2的外径。封闭环24优选设有两道或以上，封闭环24的设置可以提供调节棒2与调节棒通道12之间更佳的密封性。封闭环24的横截面优选为半圆形，也可以是梯形或其它形状。
固定底座1容纳有分别连通输液管道的固定底座进液口和固定底座出液口，固定底座进液口和固定底座出液口通过调节棒2上液流通道11相连通。调节棒2优选采用开放或半开放结构。
调节棒2采用开放或半开放结构，调节棒2上设有作为液流通道11的通孔，通孔设有一个或呈间隔分布、不同孔径的设置。当通孔为一个时，固定底座1上底部形状与调节棒2上通孔相对应，对应横截面积最小为零，最大时等于整个通孔。当通孔采用间隔分布、不同 孔径的设置时，不同孔径的通孔与固定底座1上底部形状对应，对应横截面积最小为零，最大时等于整个最大通孔的横截面积。特别的，相邻的通孔的最小横截面积朝一个方向依次增大，如由上至下依次增大，这样调节棒2上的通孔与固定底座1上底部形状对应横截面积顺次增大或减小。在进行输液流速调节时，可以使输液流速顺次增大或减小，方便输液调节流速。通孔的横截面可以为三角形、圆形或其它形状。
固定底座1设有连通输液管道的固定底座进液口，调节棒2上设有连通输液管道的调节棒出液口，调节棒2上设有与固定底座出液口相通的调节棒进液口和调节棒出液口，调节棒进液口和固定底座出液口通过调节棒2上液流通道11相连通，此时调节棒2优选采用中空结构，调节棒2壁可采用完整密闭方式，在调节棒2末端设有开口；或调节棒2外壁设有侧壁凹槽作为液体管路；或调节棒2外壁设有至少一个通孔，通孔设有一个或呈间隔分布、不同孔径的设置。
固定底座1也可设置连通输液管道的固定底座出液口，调节棒2上设有连通输液管道的调节棒进液口，调节棒2上设有与固定底座进液口相通的调节棒进液口和调节棒出液口，调节棒2优选采用中空结构，固定底座进液口和调节棒出液口仍通过调节棒2上液流通道11相连通，各通道的连接关系类似变更即可。
固定底座1既可以单独与调节棒2上作为液流通道11的单个凹槽配合调节输液流速，也可以与调节棒2上作为液流通道11的两个或以上凹槽共同配合调节输液流速；或者固定底座内设置一条以上的 液体管路与调节棒2上作为液流通道11的一个或一个以上凹槽的多种组合共同配合调节输液流速。
当采用两根或以上调节棒2时，调节棒2可以相同结构，也可以不同结构。甚至可以在同一根调节棒2上采用两种或两种以上相同结构或不同结构的结构模式。这样可以更为精确的调节液流通道11的横截面积，对输液流速进行更为精确的调节。
调节棒2向后延伸出辅助板,用于限制弹性件脱位和配合运动压板41对调节棒2进行调节。辅助板优选为上部为圆弧形，以方便与运动压板41在不同角度对应。调节棒2与固定底座1之间设有推动两者分离的复位弹簧31。
调节器上设有在运动压板41的铰接位置一侧固定于固定器，下方对应辅助板，上方对应滑轮43，由高摩擦力硬质不变形材料制作的运动压板41。运动压板41以运动压板41的固定轴为轴心运动。运动压板的设置放大了调节棒2的调节运动距离，使输液流速调节更平顺，提高输液调节器的调速性能，也可避免滑轮43因非主动的滑动而出现输液流速飘移。
调节器上设有可动的外周带防滑凹槽的滑轮43，滑轮43的设置可很好地方便操作者调节输液流速。滑轮43上设有滑轮轴，对称设置在滑轮43两侧。固定器上设有供滑轮轴运动的滑槽42，滑槽42可有效控制滑轮轴的运动轨迹。当滑槽42采用单侧或双侧波浪状导轨方式时，可以实现对液流通道11流量的非连续式定速调节。当滑槽42采用平行导轨方式时，可以实现液流通道11无级定速调节，更 易于调节输液流速。
调节器上设有刻度面板和流速指示器，刻度面板固定在固定底座1上，对应的流速指示器与滑轮43同步移动，两者配合，指示阅读输液器的输液流速和或输液流量状态。调节棒2与固定底座1之间设有防止调节棒2、调节棒通道12等内部部件与外界相通的阻隔装置。
阻隔装置由阻隔内环122、阻隔密封垫123和阻隔外环121构成。也可以采用柔性阻隔膜等其它阻隔结构。调节轮上设有环绕调节棒2的阻隔内环122，呈圆形，阻隔内环122优选为与调节棒2同一轴心。阻隔内环122和阻隔外环121之间设有阻隔密封垫123，阻隔密封垫123呈环状，放置于阻隔外环121的阻隔密封垫123固定槽上，起到密封作用。
固定底座1上设有紧套阻隔内环122且带阻隔密封垫123固定槽的阻隔外环121。阻隔外环121优选为圆形，与调节棒通道12同一轴心。阻隔装置也可采用柔性阻隔膜，柔性阻隔膜一侧固定在辅助板上，另一侧固定在固定底座1上，围绕在调节棒2、调节棒通道12和弹性件外。阻隔内环122、阻隔密封垫123和阻隔外环121配合，可有效分隔内部部件与外界，阻隔装置的应用可以很好地防止调节棒2、调节棒通道12等内部部件与外界相通，在调节器使用过程中保持调节棒2和调节棒通道12等内部部件处于无菌状态。阻隔装置的应用还能很好地保持调节棒2与调节棒通道12的位置状态。
作为本发明优选的实施方式，所述调节棒2的顶部设有调节轮5，所述固定底座1上设有突出于固定底座1表面并置于调节轮5顶部的 限位挡件51，通过旋转所述调节轮5调整调节棒伸入调节棒通道12内的长度和/或者角度。
作为本发明优选的实施方式，所述调节棒2向外延伸设有调节轮5，所述调节轮5向上延伸设有调节轮固定轴53，所述调节棒2的底部紧贴在调节棒通道12底部，所述固定底座1上设有容纳调节轮固定轴孔的固定器54，所述调节轮5可沿调节棒通道12作轴向旋转，通过旋转所述调节轮5调整调节棒2在调节棒通道12内的角度。
作为本发明优选的实施方式，所述调节棒2的顶部设有调节轮5，所述调节棒2与调节棒通道12间通过螺纹连接，所述固定底座1上设有突出于固定底座1表面并置于调节轮5顶部的限位挡件51，通过旋转所述调节轮5调整调节棒伸入调节棒通道12内的长度和角度。
作为本发明优选的实施方式，固定底座1上设有一圈定位底盘52，沿定位底盘52的上表面设有一圈定位凹槽，调节轮5的下方设有至少一个定位凸起，调节轮5通过定位凸起嵌入定位凹槽内进行定位。
作为本发明优选的实施方式，定位底盘52上设有一圈高度依次变化的定位凹槽，定位凸起嵌入各定位凹槽内定位的同时调整调节棒2伸入液流通道11内的长度和角度。
作为本发明优选的实施方式，定位底盘52上设有一圈高度连续变化的定位凹槽，定位凸起嵌入不同高度定位凹槽内定位的同时调整调节棒伸入液流通道11内的长度和角度。
作为本发明优选的实施方式，调节棒2与调节棒通道12间通过 螺纹连接。
作为本发明优选的实施方式，调节轮5上设有环绕调节轮5设置的流速刻度线。
作为本发明的一种实施方式，调节棒通道12上设有内螺纹,调节棒2外部设有外螺纹，固定底座1设有限定调节棒2位移的限位挡件51。限位挡件51的设置，可以很好地的限定调节棒2最大位移，便于操控，减少误操作和避免调节棒2脱出。
输液调节器上设有可改变位置并随不同位置改变液流通道11供液体通过的横截面积的调节棒2，呈开放或半开放结构调节棒2，或呈中空结构的调节棒2。调节棒2采用圆柱状，调节棒2外径大于或等于调节棒通道12的内径，安装时稍加用力即可压入调节棒通道12，这样调节棒与调节棒通道12可相互紧密配合，避免渗液、漏液。调节棒2也可以采用长方体或其他形状。优选的，调节棒2外径稍大于或等于调节棒通道12内径，这样安装方便的同时亦不会折断调节棒2。
调节棒通道12上内螺纹与调节棒上外螺纹的设置，可以方便调速，也可以更好地使调节棒2与调节棒通道12相互紧密配合，可更好地避免渗液、漏液发生。
当调节棒2采用开放或半开放结构，调节棒2上设有作为液流通道11的通孔，通孔设有一个或呈间隔分布、不同孔径的设置。当通孔为一个时，固定底座1上底部形状与调节棒2上通孔相对应，对应横截面积最小为零，最大时等于整个通孔。当通孔采用间隔分布、不 同孔径的设置时，不同孔径的通孔与固定底座1上底部形状对应，对应横截面积最小为零，最大时等于整个最大通孔的横截面积。特别的，相邻的通孔的最小横截面积朝一个方向依次增大，如由上至下依次增大，这样调节棒2上的通孔与固定底座1上底部形状对应横截面积顺次增大或减小。在进行输液流速调节时，可以使输液流速顺次增大或减小，方便输液调节流速。通孔的横截面可以为三角形、圆形或其它形状。
当调节棒2采用中空结构，调节棒2壁可采用完整密闭方式，在调节棒2末端设有作为液流通道的开口；或调节棒2外壁设有侧壁凹槽作为液体管路；或调节棒2外壁设有至少一个通孔，通孔设有一个或呈间隔分布、不同孔径的设置。调节棒2通过沿调节棒通道12改变位置并随不同位置改变调节棒2上液流通道11的截面与固定底座1上底部形状间相交部分面积大小来调节流速。优选的，调节棒2的运动轨迹沿一个方向依次偏离，如由上至下或顺时针方向依次增大，这样调节棒2与液流通道11横截面积相交面积顺次增大或减小。在进行输液流速调节时，可以使输液流速顺次增大或减小，方便调节输液流速。
调节棒2向外延伸出调节轮5，调节轮5整体为圆盘状，调节轮5圆心设在调节棒2上，调节棒2同时作为调节轮5的转轴，调节流速时，调节轮5以调节棒2为轴心转动，与固定底座1呈相对旋转。调节轮5向上延伸有调节轮固定轴，固定底座1上设有容纳调节轮固定轴孔的固定器。调节轮固定轴和固定器的设置可以很好地固定调节 轮5。
固定底座1向外延伸有定位底盘52，调节轮5作为定位动盘，定位底盘52和定位动盘之间设有定位装置。定位装置可以是相互配合的定位凸起和定位凹槽。
作为优选，定位装置为相互配合的半球状凸起和半球状凹陷，定位装置为相互配合的凸起和呈阶梯状高度变化的凹陷，或定位装置为相互配合的凸起和呈连续高度变化的凹陷。
定位装置优选有多组。定位装置的设置可以指示调速是否到位，方便流速的设定，避免调节时出现失误，影响输液的进程。定位装置的设置还可以保证在设定流速后，不会轻易变化，导致流速漂移。定位凹槽的高度沿一个方向依次变化，如由上至下依次增大，这样调节棒2上圆形通孔21与液流通道11对应横截面积顺次增大或减小。在进行流速调节时，可以使流速顺次增大或减小，方便调节流速。
作为优选的实施方式，定位凹槽沿圆周呈阶梯状分布，定位凹槽凹陷中心点高度沿顺时针方向逐步下降，调节轮5旋转时带动定位凸块与相应的定位凹槽配合，从而带动调节棒2作出相应位移，达到设定流速的目的。
当定位凹槽采用阶梯状高度变化的凹陷时，可以实现对液流通道11流量的非连续式定速调节。当定位凹槽采用呈连续高度变化的凹陷时，可以实现液流通道11无级定速调节，更易于调节流速。
上述调节器上设有刻度面板和流速指示器，刻度面板固定在固定底座1上，对应的流速指示器与调节轮5同步移动，两者配合，指示 阅读输液器的输液流速和输液流量状态。调节棒2与固定底座1之间设有防止调节棒2、调节棒通道12等内部部件与外界相通的阻隔装置。
作为本发明优选的实施方式，固定底座1的两侧设有调节阀凹槽，与所述调节棒2顶端相连设有包覆在固定底座1外紧贴凹槽壁运动的棘爪6。
作为本发明优选的实施方式，调节棒2的顶端设有调节环61。
作为本发明优选的实施方式，两相对的调节阀凹槽上由上至下设有若干调节齿62，调节棒2顶端向下延伸设有包覆在固定底座1外卡固在两侧的调节齿62上相对设置的两道棘爪6。
作为本发明优选的实施方式，两调节阀凹槽的宽度大于两棘爪6间的宽度。
作为本发明优选的实施方式，所述固定底座1和调节棒2之间设有锁止卡位。锁止卡位的设置，可以很好地限定调节棒的最大位移，便于操控，减少误操作。
作为本发明优选的实施方式，所述固定底座1和调节棒2为一体制作，或者所述固定底座1与调节棒2为彼此独立设置。
作为本发明优选的实施方式，固定底座1和调节棒2通过可折弯件连接带7连成一体。
设置连接带的一体化制作更可减少不同注塑条件注塑时带来的产品精度误差，提高调节棒2与调节棒通道12的匹配率。
作为本发明的一种实施方式，固定底座1上设有调节阀凹槽,当 调节阀凹槽为波浪状的凹槽时，不同调节阀凹槽与固定底座1上的调节棒通道12上平面具有不同的距离。调节阀凹槽为波浪状分布，不同的调节阀凹槽的长度相同，两侧平行设置，棘爪6分别与对应的调节阀凹槽固定。相邻的调节阀凹槽与固定底座1调节棒通道12上平面具有不同的距离朝一个方向依次增大，如由上至下依次增大，这样在进行输液流速调节时，可以使调节棒2顺次增大或减小调整位移，方便调节输液流速。调节阀凹槽的横截面可以是齿状、阶梯状、波浪状或其他形状。调节阀凹槽为波浪状的凹槽配合不同结构调节棒2配合设置，可以实现对液流通道11输液流量的非连续式定速调节。
当调节阀凹槽为延伸平面的凹槽时，调节阀凹槽优选为长方形，两侧平行对称设置，棘爪6分别与对应的调节阀凹槽固定。特别的，相邻的调节阀凹槽与固定底座1调节棒通道12上平面具有不同的距离朝一个方向依次增大，如由上至下依次增大，这样在进行输液流速调节时，可以使调节棒2顺次增大或减小调整位移，方便调节输液流速。调节阀凹槽的横截面可以是直线、弧线或其他形状。调节阀凹槽采用延伸平面的凹槽配合密闭结构调节棒2设置时，可以实现液流通道11输液流量的无级定速调节，更易于调节输液流速。
调节棒2设有与调节棒2联动的棘爪6，固定底座1设有调节阀凹槽，调节棒2设有棘爪6，两者相互配合以确定调节棒2的位置。调节阀凹槽优选为两道，棘爪6优选为两个，两道调节阀凹槽之间间距大于对应的两个棘爪6之间间距，这样棘爪6更易抓紧调节阀凹槽，以加强两者操作的牢固性。两者配合位置优选有两组以上组合。调节 阀凹槽和棘爪6的配合使用，可方便输液流速的设定，还可以保证在设定输液流速后，不会轻易变化，导致输液流速漂移。棘爪6的横截面可以是“L”形、矩形、三角形、半圆形或其他形状，流速调节阀设有方便把持和操作流速调节阀的调节环61。
当然，本发明创造并不局限于上述实施方式，熟悉本领域的技术人员在不违背本发明精神的前提下还可作出等同变形或替换，这些等同的变型或替换均包含在本申请权利要求所限定的范围内。

Claims (13)

  1. 一种输液流速调节器，其特征在于：
    包括设有固定底座进液口和固定底座出液口的固定底座以及安装在所述固定底座上的调节棒；
    所述调节棒上设有连接在固定底座进液口和固定底座出液口之间的液流通道；
    所述固定底座上设有调节棒通道；
    所述调节棒通道内设有可动的调节棒，所述调节棒与调节棒通道间水密性密封；
    通过调整所述固定底座上底部形状与调节棒上液流通道的截面形状的重叠部分面积调整液流通道供液体通过的横截面积。
  2. 一种输液流速调节器，其特征在于：
    包括设有固定底座进液口和固定底座出液口的固定底座以及安装在所述固定底座上的调节棒；
    所述调节棒上设有连接在固定底座出液口和调节棒进液口之间的液流通道；
    所述固定底座上设有调节棒通道；
    所述调节棒通道内设有可动的调节棒，所述调节棒与调节棒通道间水密性密封；
    所述调节棒上设有与固定底座出液口相通的调节棒进液口和调节棒出液口；
    通过调整所述固定底座上底部形状与调节棒上液流通道的截面 形状的重叠部分面积调整液流通道供液体通过的横截面积。
  3. 根据权利要求1或2所述的输液流速调节器，其特征在于：所述液流通道为间隔分布的凹槽，或横截面积连续变化的凹槽。
  4. 根据权利要求1或2所述的输液流速调节器，其特征在于：所述调节棒通过改变底部嵌入调节棒通道的长度和/或者角度来进行截流，所述调节棒上液流通道的截面形状与固定底座上底部形状贴合，可对液流通道进行完全截流。
  5. 根据权利要求4所述的输液流速调节器，其特征在于：所述调节棒上设有至少一个通孔，所述调节棒通过竖向运动改变调节棒上通孔的截面与固定底座上底部形状间相交部分面积大小来调节流速。
  6. 根据权利要求4所述的输液流速调节器，其特征在于：所述调节棒上设有横截面积连续变化的液流通道，调节棒通过沿调节棒通道作竖向运动或水平旋转或螺旋运动改变调节棒上液流通道的截面形状与固定底座上底部形状间相交部分面积大小来调节流速。
  7. 根据权利要求2所述的输液流速调节器，其特征在于：所述调节棒外壁上设有连接固定底座出液口和调节棒进液口之间的液流通道，所述调节棒内设有内部中空的中空腔，所述调节棒设有与所述中空腔相通的出液通道，所述出液通道与调节棒一体制作。
  8. 根据权利要求4～7中任意一项所述的输液流速调节器，其特征在于：所述调节棒的顶端设有辅助压板，所述调节棒通道突出于固定底座的上表面，所述辅助压板与固定底座间设有复位弹簧，所述辅助压板的上方设有调节固定座和运动压板，所述运动压板的一端置于辅助 压板的上方，所述运动压板的另一端铰接固定在调节固定座上，所述调节固定座上设有滑槽，所述滑槽内设有可沿滑槽水平运动的滑轮，所述滑轮的底部压迫在运动压板上，所述滑轮滑动过程中驱动压板逐步下压辅助压板。
  9. 根据权利要求4、6～7中任意一项所述的输液流速调节器，其特征在于：所述调节棒向外延伸设有调节轮，所述调节轮向上延伸设有调节轮固定轴，所述调节棒的底部紧贴在调节棒通道底部，所述固定底座上设有容纳调节轮固定轴孔的固定器，所述调节轮可沿调节棒通道作轴向旋转，通过旋转所述调节轮调整调节棒在调节棒通道内的角度。
  10. 根据权利要求4、6～7中任意一项所述的输液流速调节器，其特征在于：所述调节棒的顶部设有调节轮，所述调节棒与调节棒通道间通过螺纹连接，所述固定底座上设有突出于固定底座表面并置于调节轮顶部的限位挡件，通过旋转所述调节轮调整调节棒伸入调节棒通道内的长度和角度。
  11. 根据权利要求9～10中任意一项所述的输液流速调节器，其特征在于：所述调节轮上设有环绕调节轮设置的流速刻度线。
  12. 根据权利要求4～5、7中任意一项所述的输液流速调节器，其特征在于：所述固定底座的两侧设有调节阀凹槽，所述调节棒的顶端设有调节环，所述调节棒顶端向下延伸设有包覆在固定底座外紧贴凹槽壁运动的棘爪。
  13. 根据权利要求1或2所述的输液流速调节器，其特征在于：所述 固定底座和调节棒为一体制作，或者所述固定底座与调节棒为彼此独立设置。
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