CN105268062A - Drip chamber of infusion apparatus - Google Patents
Drip chamber of infusion apparatus Download PDFInfo
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- CN105268062A CN105268062A CN201510873639.5A CN201510873639A CN105268062A CN 105268062 A CN105268062 A CN 105268062A CN 201510873639 A CN201510873639 A CN 201510873639A CN 105268062 A CN105268062 A CN 105268062A
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- exhaustor
- gas port
- endoporus
- air
- filtering membrane
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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
- A61M5/1411—Drip chambers
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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
The invention provides a drip chamber of an infusion apparatus, and belongs to the technical field of medical apparatuses. The drip chamber solves the problem that when an existing drip chamber of the infusion apparatus is used again, gas can hardly be discharged automatically. The drip chamber comprises a body, an exhaust pipe and a hydrophobic air filter film. A liquid outlet is formed in one end of the body, and the other end of the body is fixedly connected with an end cover. A liquid inlet is formed in the end cover. An exhaust hole is formed in the end cover. One end of the exhaust pipe is fixedly connected to the end cover, and a disc part is arranged at the other end of the exhaust pipe. The outer diameter of the disc part is larger than the outer diameter of the exhaust pipe. An air guide hole is formed in the side face of the disc part. One end of an inner hole of the exhaust pipe is communicated with the exhaust hole, and the other end of the inner hole of the exhaust pipe is communicated with the air guide hole. A fixed protruding edge is arranged on the side face of the disc part. The air filter film is fixedly connected into the fixed protruding edge. By means of the drip chamber, on the basis of reducing the production cost, the automatic exhaust capacity is still achieved when an infusion bottle is replaced.
Description
Technical field
The invention belongs to medical apparatus technical field, relate to a kind of infusion unit titrimeter.
Background technology
Transfusion device be a kind of be mainly used in venous transfusion through aseptic process, the common disposable medical treatment consumptive materials of setting up passage between vein and medicinal liquid, generally connected to form by intravenous needle, helmet, infusion tube, liquid medicine filter, flow regulator, dropping funnel, bottle plug puncture unit, air inlet pipe air filter, wherein dropping funnel is used for temporarily storing liquid, in use, medical personnel need first to extrude dropping funnel, gas in dropping funnel is extruded the liquid in infusion bottle can be made to enter in dropping funnel, use and comparatively bother.
For the problems referred to above, Chinese invention patent application (application number: 201410263819.7) disclose a kind of transfusion device, in dropping funnel, automatic exhauster is set, automatic exhauster comprises from exhaustor and air-filtering membrane, be fixed on bottom dropping funnel from exhaustor lower end, there is the exhaust hole being communicated with dropping funnel inner chamber and ambient atmosphere in exhaustor, air-filtering membrane is fixed on from exhaustor top, without the need to being inverted or extruding dropping funnel during use, but due to dropping funnel small volume, therefore also less from the caliber of exhaustor, it is more difficult to be now fixed on the port of exhaustor by air-filtering membrane less for diameter, namely this to be fixedly connected with process costs higher, and connective stability is poor, (the application number: 201120143950.1) disclose a kind of Automatic-exhaust transfusion system of Chinese utility model patent application for this reason, it comprises protective sleeve for bottle stopper puncture outfit, bottle plug puncture unit, aerofluxus tubulature, air filter, dropping funnel, dropper, flow regulator, transfusion long duct, liquid medicine filter and single use venoclysis needle, dropping funnel is made up of dropping funnel lid and dropping funnel body, the left end covered at dropping funnel is processed with liquid injection device, feature is: the right-hand member covered at dropping funnel is provided with by the exhaust needle of integration, the automatic exhaust device of dropping funnel air filter and venting plug composition, dropping funnel air filter is fixed with in the bottom of exhaust needle, be provided with one to be communicated with and the exhaust needle endoporus of confession air circulation with dropping funnel air filter at the middle part of exhaust needle, but the lower end of this air filter has air passing hole, intrinsic liquid covers air filter in use, and intrinsic liquid level can decline when needing to change infusion bottle, but the liquid in air passing hole is difficult to flow out, cause liquid residue in air passing hole, when namely reusing, intrinsic gas is difficult to automatic discharge.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of infusion unit titrimeter, when this infusion unit titrimeter can be taken in and change infusion bottle on the basis reducing production cost, still there is self-bleeding ability.
Object of the present invention realizes by following technical proposal: a kind of infusion unit titrimeter, comprise the body of tubular, one end of described body has liquid outlet, the other end of body is fixed with end cap, described end cap has inlet opening, described end cap offers steam vent, it is characterized in that, described infusion unit titrimeter also comprises exhaustor and hydrophobic air-filtering membrane, described exhaustor is positioned at body interior, one end of this exhaustor is connected on end cap, and the axis of exhaustor is identical with the axis of body, the other end of described exhaustor has plate-like portion, the external diameter in this plate-like portion is greater than the external diameter of exhaustor, the side in described plate-like portion offers gas port, the diameter of this gas port is greater than the diameter of exhaustor endoporus, one end of described exhaustor endoporus is connected with steam vent, the other end is connected with gas port, the centrage of described gas port and the centrage of exhaustor endoporus perpendicular, the side in described plate-like portion has the fixing convex edge of annular around gas port, described air-filtering membrane is connected in fixing convex edge.
The liquid outlet of body is connected with syringe needle by tube for transfusion, inlet opening is connected with infusion bottle by tube for transfusion, and end cap is convenient to the assembling of dropping funnel, during use, dropping funnel is roughly in vertical state, end cap is positioned at top, infusion bottle by tube for transfusion by Liquid transfer to inlet opening, and through in inlet opening instillation body, intrinsic gas is extruded body by exhaustor by the liquid simultaneously instilling body, realize automatic vent, exhaustor, plate-like portion and fixing convex edge are integral type plastic construction, with simplified processing process and attenuating production cost, in view of the capacity of body is less, less at intrinsic gas flow, and this gas is by extruding after liquid instillation body, namely deflation rate is lower, therefore exhaustor endoporus aperture is less, and relative and exhaustor, discoid body diameter is larger, relatively and the endoporus of exhaustor, the aperture of gas port is larger, therefore the cutting of air-filtering membrane is made, positioning process is simpler, certain larger-diameter fixing convex edge has larger radial contraction space, therefore, it is possible to air-filtering membrane is fixed by fixing convex edge radial contraction, reduce production cost, further, air-filtering membrane is hydrophobicity, can filter air, liquid can be stoped to enter in gas port when intrinsic liquid rises simultaneously, namely when one bottle of infusion bottle be finished need change time, after intrinsic liquid level declines, liquid can not remain in gas port, and fixing convex edge and air-filtering membrane all have larger diameter, therefore liquid also can not remain in the outside of fixing convex edge or air-filtering membrane, certain air-filtering membrane is difficult to definitely to block liquid and enters gas port, when liquid part infiltrates gas port, because the aperture of gas port is larger, and the centrage of gas port is horizontally disposed with, therefore gas port inwall does not have the adhesion of balance to liquid, liquid can be flowed out along gas port inwall, avoid liquid residue, therefore after changing infusion bottle, body interior is still connected with outside by exhaustor, there is automatic vent ability.
In above-mentioned infusion unit titrimeter, the medial surface of described air-filtering membrane and the side in plate-like portion fit and are connected, the periphery wall of described air-filtering membrane and the internal perisporium of fixing convex edge fit and are connected, and the lateral surface of described air-filtering membrane and the end face of fixing convex edge or the lateral surface of air-filtering membrane are higher than the end face of fixing convex edge.Improve the connective stability of air-filtering membrane, after making air-filtering membrane welding, there is larger connection area simultaneously, improve the sealing to liquid, and the end face of the lateral surface of gas filter membrane and fixing convex edge or the lateral surface of air-filtering membrane are higher than the end face of fixing convex edge, make the space not having water storage between air-filtering membrane and fixing convex edge, namely in body, liquid level avoids liquid residue on fixing convex edge or air-filtering membrane after declining.
In above-mentioned infusion unit titrimeter, described gas port aperture is 3 ~ 5 times of exhaustor endoporus aperture.Increase the aperture of gas port, even if there is liquid to infiltrate in gas port, because gas port aperture is large, and gas port level towards, therefore liquid is flowed out by gas port bottom under gravity, is difficult to adhesion and remains in gas port.
In above-mentioned infusion unit titrimeter, the degree of depth of described gas port is greater than the aperture of exhaustor endoporus, and the port of exhaustor endoporus is positioned on the sidewall of gas port.Even if liquid infiltrates gas port and enter the lower end of exhaustor endoporus, when liquid level in body declines, gas port inwall and exhaustor endoporus junction are cambered surface, play the effect of guide surface, liquid in exhaustor endoporus can flow out along the inwall of gas port, avoids liquid residue in the endoporus of exhaustor.
In above-mentioned infusion unit titrimeter, the described centrage of exhaustor endoporus and the centrage of gas port are on same perpendicular.Namely gas port is positioned at the two side portions symmetry of exhaustor endoporus, and the liquid in exhaustor endoporus can be flowed out.
In above-mentioned infusion unit titrimeter, the inner port edges circumference of described steam vent has the recessed shoulder of connection, and the end of described exhaustor is connected in by tight fit grafting and connects in recessed shoulder.Make the easier for installation of exhaustor, and then reduction is produced into.
In above-mentioned infusion unit titrimeter, the outer face of described end cap has column, on the lateral wall of this column, circumference offers some passages, and some described passage circumferences are uniform, and passage is connected with steam vent and foreign body can be avoided to enter into exhaustor cause exhaustor to block.
In above-mentioned infusion unit titrimeter, described body adopts rigid plastics or semi-rigid plastic to make, and is also provided with only liquid float in body.Exhaustor has the ability of repeatedly aerofluxus after use, therefore be exhausted without the need to Manual press body, therefore body can adopt hard or the plastics of semi-rigid make, and the body with certain rigidity can be avoided before use because the factors such as packaging extruding cause distortion, thus ensure that only the normal of liquid float floats.
Compared with prior art, this infusion unit titrimeter has the following advantages:
1, due to relative and exhaustor, discoid body diameter is larger, relatively and the endoporus of exhaustor, the aperture of gas port is larger, therefore make the cutting of air-filtering membrane, positioning process simpler, certain larger-diameter fixing convex edge has larger radial contraction space, therefore, it is possible to fixed by air-filtering membrane by fixing convex edge radial contraction, reduces production cost.
2, due to when intrinsic liquid rises air-filtering membrane liquid can be stoped to enter in gas port, namely when one bottle of infusion bottle be finished need change time, after intrinsic liquid level declines, liquid can not remain in gas port, and fixing convex edge and air-filtering membrane all have larger diameter, therefore liquid also can not remain in the outside of fixing convex edge or air-filtering membrane.
3, because gas port inwall and exhaustor endoporus junction are cambered surface, play the effect of guide surface, even if liquid infiltrates gas port and enter the lower end of exhaustor endoporus, when liquid level in body declines, liquid in exhaustor endoporus can flow out along the inwall of gas port, avoids liquid residue in the endoporus of exhaustor.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of this infusion unit titrimeter.
Fig. 2 is the schematic enlarged-scale view at A place in Fig. 1.
Fig. 3 is the structure front view in plate-like portion.
In figure, 1, body; 11, liquid outlet; 2, end cap; 21, inlet opening; 22, steam vent; 23, recessed shoulder is connected; 24, column; 241, passage; 3, exhaustor; 31, plate-like portion; 32, gas port; 33, fixing convex edge; 4, air-filtering membrane; 5, liquid float is stopped.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1 and Figure 2, a kind of infusion unit titrimeter, comprise the body 1 of tubular, one end of body 1 has liquid outlet 11, the other end of body 1 is fixed with end cap 2, end cap 2 has inlet opening 21, and the liquid outlet 11 of body 1 is connected with syringe needle by tube for transfusion, inlet opening 21 is connected with infusion bottle by tube for transfusion, and end cap 2 is convenient to the assembling of dropping funnel.End cap 2 offers steam vent 22, infusion unit titrimeter also comprises exhaustor 3 and hydrophobic air-filtering membrane 4, it is inner that described exhaustor 3 is positioned at body 1, one end of this exhaustor 3 is connected on end cap 2, and the axis of exhaustor 3 is identical with the axis of body 1, the other end of exhaustor 3 has plate-like portion 31, the external diameter in this plate-like portion 31 is greater than the external diameter of exhaustor 3, the side in plate-like portion 31 offers gas port 32, the diameter of this gas port 32 is greater than the diameter of exhaustor 3 endoporus, one end of exhaustor 3 endoporus is connected with steam vent 22, the other end is connected with gas port 32, the centrage of gas port 32 and the centrage of exhaustor 3 endoporus perpendicular, the side in plate-like portion 31 has the fixing convex edge 33 of annular around gas port 32, air-filtering membrane 4 is connected in fixing convex edge 33.During use, dropping funnel is roughly in vertical state, end cap 2 is positioned at top, infusion bottle by tube for transfusion by Liquid transfer to inlet opening 21, and instill in body 1 through inlet opening 21, gas in body 1 is extruded body 1 by exhaustor 3 by the liquid simultaneously instilling body 1, realize automatic vent, exhaustor 3, plate-like portion 31 and fixing convex edge 33 are integral type plastic construction, with simplified processing process and attenuating production cost, in view of the capacity of body 1 is less, gas flow in body 1 is less, and this gas is by extruding after liquid instillation body 1, namely deflation rate is lower, therefore exhaustor 3 endoporus aperture is less, and relative and exhaustor 3, discoid body diameter is larger, relatively and the endoporus of exhaustor 3, the aperture of gas port 32 is larger, therefore the cutting of air-filtering membrane 4 is made, positioning process is simpler, certain larger-diameter fixing convex edge 33 has larger radial contraction space, therefore, it is possible to air-filtering membrane 4 is fixed by fixing convex edge 33 radial contraction, reduce production cost, further, air-filtering membrane 4 is hydrophobicity, can filter air, liquid can be stoped to enter in gas port 32 when the liquid in body 1 rises simultaneously, namely when one bottle of infusion bottle be finished need change time, after liquid level in body 1 declines, liquid can not remain in gas port 32, and fixing convex edge 33 and air-filtering membrane 4 all have larger diameter, therefore liquid also can not remain in the outside of fixing convex edge 33 or air-filtering membrane 4, certain air-filtering membrane 4 is difficult to definitely to block liquid and enters gas port 32, when liquid part infiltrates gas port 32, because the aperture of gas port 32 is larger, and the centrage of gas port 32 is horizontally disposed with, therefore gas port 32 inwall does not have the adhesion of balance to liquid, liquid can be flowed out along gas port 32 inwall, avoid liquid residue, therefore after changing infusion bottle, body 1 inside is still connected with outside by exhaustor 3, there is automatic vent ability.
Specifically, shown in composition graphs 3, the medial surface of air-filtering membrane 4 and the side in plate-like portion 31 fit and are connected, the periphery wall of air-filtering membrane 4 and the internal perisporium of fixing convex edge 33 fit and are connected, improve the connective stability of air-filtering membrane 4, after making air-filtering membrane 4 welding, there is larger connection area simultaneously, improve the sealing to liquid, the lateral surface of the lateral surface of air-filtering membrane 4 and the end face of fixing convex edge 33 or air-filtering membrane 4 is higher than the end face of fixing convex edge 33, make the space not having water storage between air-filtering membrane 4 and fixing convex edge 33, namely in body 1, liquid level avoids liquid residue on fixing convex edge 33 or air-filtering membrane 4 after declining.Plate-like portion 31 can be caused when gas port 32 aperture is excessive excessive, and then take larger body 1 inner space, and gas port 32 aperture too small time, easily cause remaining when liquid infiltrates gas port 32, therefore in the present embodiment, gas port 32 aperture is 4 times of exhaustor 3 endoporus aperture, even if there is liquid to infiltrate in gas port 32, because gas port 32 aperture is large, and gas port 32 level towards, therefore liquid under gravity by gas port 32 bottom flow out, be difficult to adhesion and remain in gas port 32.The degree of depth of gas port 32 is greater than the aperture of exhaustor 3 endoporus, and the port of exhaustor 3 endoporus is positioned on the sidewall of gas port 32, even if liquid infiltrates gas port 32 and enter the lower end of exhaustor 3 endoporus, when liquid level in body 1 declines, gas port 32 inwall and exhaustor 3 endoporus junction are cambered surface, play the effect of guide surface, the liquid in exhaustor 3 endoporus can flow out along the inwall of gas port 32, avoids liquid residue in the endoporus of exhaustor 3.The centrage of exhaustor 3 endoporus and the centrage of gas port 32 are on same perpendicular, and namely gas port 32 is positioned at the two side portions symmetry of exhaustor 3 endoporus, and the liquid in exhaustor 3 endoporus can be flowed out.
The inner port edges circumference of steam vent 22 has the recessed shoulder 23 of connection, and the end of exhaustor 3 is connected in by tight fit grafting and connects in recessed shoulder 23, make the easier for installation of exhaustor 3, and then reduction is produced into.The outer face of end cap 2 has column 24, on the lateral wall of this column 24, circumference offers some passages 241, some passage circumferences are uniform, and passage 241 is connected with steam vent 22, passage 241 has four, overall in cross-shaped arrangement, foreign body can be avoided to enter into exhaustor 3 and to cause exhaustor 3 to block.Body 1 adopts rigid plastics or semi-rigid plastic to make, only liquid float 5 is also provided with in body 1, exhaustor 3 has the ability of repeatedly aerofluxus after use, therefore be exhausted without the need to Manual press body 1, therefore body 1 can adopt hard or the plastics of semi-rigid make, and the body 1 with certain rigidity can be avoided before use because the factors such as packaging extruding cause distortion, thus ensure that only the normal of liquid float 5 floats.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as body 1, liquid outlet 11, end cap 2 herein, do not get rid of the probability using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (8)
1. an infusion unit titrimeter, comprise the body (1) of tubular, one end of described body (1) has liquid outlet (11), the other end of body (1) is fixed with end cap (2), described end cap (2) has inlet opening (21), described end cap (2) offers steam vent (22), it is characterized in that, described infusion unit titrimeter also comprises exhaustor (3) and hydrophobic air-filtering membrane (4), it is inner that described exhaustor (3) is positioned at body (1), one end of this exhaustor (3) is connected on end cap (2), and the axis of exhaustor (3) is identical with the axis of body (1), the other end of described exhaustor (3) has plate-like portion (31), the external diameter in this plate-like portion (31) is greater than the external diameter of exhaustor (3), the side of described plate-like portion (31) offers gas port (32), the diameter of this gas port (32) is greater than the diameter of exhaustor (3) endoporus, one end of described exhaustor (3) endoporus is connected with steam vent (22), the other end is connected with gas port (32), the centrage of described gas port (32) and the centrage of exhaustor (3) endoporus perpendicular, the side of described plate-like portion (31) has the fixing convex edge (33) of annular around gas port (32), described air-filtering membrane (4) is connected in fixing convex edge (33).
2. infusion unit titrimeter according to claim 1, it is characterized in that, the medial surface of described air-filtering membrane (4) and the side of plate-like portion (31) fit and are connected, the periphery wall of described air-filtering membrane (4) and the internal perisporium of fixing convex edge (33) fit and are connected, and the lateral surface of the lateral surface of described air-filtering membrane (4) and the end face of fixing convex edge (33) or air-filtering membrane (4) is higher than the end face of fixing convex edge (33).
3. infusion unit titrimeter according to claim 2, is characterized in that, described gas port (32) aperture is 3 ~ 5 times of exhaustor (3) endoporus aperture.
4. the infusion unit titrimeter according to claim 1 or 2 or 3, it is characterized in that, the degree of depth of described gas port (32) is greater than the aperture of exhaustor (3) endoporus, and the port of exhaustor (3) endoporus is positioned on the sidewall of gas port (32).
5. infusion unit titrimeter according to claim 4, is characterized in that, the centrage of described exhaustor (3) endoporus and the centrage of gas port (32) are on same perpendicular.
6. the infusion unit titrimeter according to claim 1 or 2 or 3, it is characterized in that, the inner port edges circumference of described steam vent (22) has the recessed shoulder of connection (23), and the end of described exhaustor (3) is connected in by tight fit grafting and connects in recessed shoulder (23).
7. the infusion unit titrimeter according to claim 1 or 2 or 3, it is characterized in that, the outer face of described end cap (2) has column (24), on the lateral wall of this column (24), circumference offers some passages (241), some described passage circumferences are uniform, and passage (241) is connected with steam vent (22).
8. the infusion unit titrimeter according to claim 1 or 2 or 3, is characterized in that, described body (1) adopts rigid plastics or semi-rigid plastic to make, and is also provided with only liquid float (5) in body (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873639.5A CN105268062B (en) | 2015-12-02 | 2015-12-02 | A kind of infusion unit titrimeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873639.5A CN105268062B (en) | 2015-12-02 | 2015-12-02 | A kind of infusion unit titrimeter |
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| CN105268062A true CN105268062A (en) | 2016-01-27 |
| CN105268062B CN105268062B (en) | 2018-05-15 |
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| CN201510873639.5A Active CN105268062B (en) | 2015-12-02 | 2015-12-02 | A kind of infusion unit titrimeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109010999A (en) * | 2018-09-30 | 2018-12-18 | 北京伏尔特技术有限公司 | A kind of automatic liquid-stopping is vented dropping funnel and its application method automatically |
| CN110975049A (en) * | 2019-11-18 | 2020-04-10 | 湖南宽为医疗科技有限公司 | Dropping funnel and infusion apparatus with same |
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| US5851202A (en) * | 1994-08-15 | 1998-12-22 | Gambro Ab | Drip chamber head |
| JP2009273775A (en) * | 2008-05-16 | 2009-11-26 | Jms Co Ltd | Air-inflow preventive device, drip cylinder, and infusion set |
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| CN204379887U (en) * | 2014-12-30 | 2015-06-10 | 北京伏尔特技术有限公司 | A kind of automatic vent automatic liquid-stopping dropping funnel |
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| CN204501885U (en) * | 2015-02-06 | 2015-07-29 | 淮安市恒春医疗器材有限公司 | Safe transfusion system dropping funnel |
| CN205145310U (en) * | 2015-12-02 | 2016-04-13 | 玉环县安尔康橡胶有限公司 | Drip chamber of infusion set |
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2015
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| US5851202A (en) * | 1994-08-15 | 1998-12-22 | Gambro Ab | Drip chamber head |
| JP2009273775A (en) * | 2008-05-16 | 2009-11-26 | Jms Co Ltd | Air-inflow preventive device, drip cylinder, and infusion set |
| CN202605452U (en) * | 2012-04-23 | 2012-12-19 | 江西洪达医疗器械集团有限公司 | Automatic exhausting and liquid-stopping transfusion set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109010999A (en) * | 2018-09-30 | 2018-12-18 | 北京伏尔特技术有限公司 | A kind of automatic liquid-stopping is vented dropping funnel and its application method automatically |
| CN110975049A (en) * | 2019-11-18 | 2020-04-10 | 湖南宽为医疗科技有限公司 | Dropping funnel and infusion apparatus with same |
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|---|---|
| CN105268062B (en) | 2018-05-15 |
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