CN108066833B - Disposable medical liquid pressure measuring device and sealed disposable puncture device - Google Patents
Disposable medical liquid pressure measuring device and sealed disposable puncture device Download PDFInfo
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- CN108066833B CN108066833B CN201711485744.7A CN201711485744A CN108066833B CN 108066833 B CN108066833 B CN 108066833B CN 201711485744 A CN201711485744 A CN 201711485744A CN 108066833 B CN108066833 B CN 108066833B
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- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000009593 lumbar puncture Methods 0.000 abstract description 18
- 210000001175 cerebrospinal fluid Anatomy 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000002403 Encephalocele Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004872 arterial blood pressure Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001647 drug administration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- A61M1/0023—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
- A61B5/032—Spinal fluid pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
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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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0464—Cerebrospinal fluid
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to the field of medical appliances, and discloses a disposable medical liquid pressure measuring device and a closed disposable puncture device. Through this disposable medical liquid pressure measuring device, not only can filter the intraductal residual air of pipe, ensure the pressure measurement precision, can also make the liquid direct action that awaits measuring promote the air filtering membrane body and compress the pressure measurement spring, at last according to the removal position change of the air filtering membrane body direct follow pressure measurement scale mark department reads the hydraulic pressure value, and then can realize utilizing a simple structure can accomplish hydraulic pressure measuring purpose, has disposable, convenient operation and safe advantage, be convenient for actual popularization and application. Meanwhile, through the sealed disposable medical puncture device, a tube replacement connection tube is not needed in the lumbar puncture process, the dynamic change process of the cerebrospinal fluid pressure can be intuitively measured, and medical accidents caused by movement of a puncture needle can be effectively avoided after the lumbar puncture is successful.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a disposable medical liquid pressure measuring device and a closed disposable puncture device.
Background
In the medical field, various parts and systems need to measure pressure, such as arterial pressure, venous pressure, ventricular pressure and the like, and the currently commonly used pressure measuring device is mainly an electronic device, has the defects of complex structure and high price, or is a simple method such as a glass tube, a plastic tube and the like, has the problems of inconvenient and safe use and inaccurate measurement, and in addition, the pressure measuring devices have strong independence, cannot be applied to other systems for measuring pressure, and have limited application range.
In addition, the current lumbar puncture needle structure is a long needle with a needle core (a long needle with a 7-or 9-gauge and a length of about 8 cm and is made of stainless steel materials). The long needle with the needle core is respectively connected with a plurality of pressure measuring pipes carved with millimeter scales at the needle tail of the lumbar puncture needle through a plurality of joints, and the pressure measuring pipes are glass pipes, and the invention is invented by Quineke in 1891. Such long needles with cores have been used for lumbar puncture. This lumbar puncture needle structure has the following disadvantages found in clinical practice.
(1) The operation is unsafe: if the cerebrospinal fluid pressure of the patient is high, the cerebrospinal fluid can be rapidly sprayed out after the needle core is pulled out according to the original method, and if the needle core cannot be immediately and accurately inserted, the cerebral hernia can be caused to cause death. In fact, because of high pressure, when the cerebrospinal fluid is sprayed, an operator does not expect spraying liquid in advance, and is stressed, especially for the first clinical operator, the needle core is often not easy to accurately insert into the puncture needle again, and thus medical accidents are easy to cause, and related reports are made in the aspect.
(2) The operation is complex: after puncture is successful, the pressure measuring tube is connected manually; when releasing cerebrospinal fluid, a specimen test tube needs to be manually connected; when the cerebrospinal fluid is released excessively at one time, no preparation container is used for taking; when the cerebrospinal fluid is released and repeatedly measured, the pressure measuring tube is required to be repeatedly connected, so that the lumbar puncture needle is possibly shifted, and the puncture fails.
(3) Easy to infect: the device mainly comprises countercurrent infection and sample pollution, wherein the former is that abdomen pressing and neck pressing exist during pressure measurement, cerebrospinal fluid in a pressure measuring tube fluctuates, cerebrospinal fluid is countercurrent, and countercurrent infection is easy to occur during lumbar puncture drug administration; the latter means that after the cerebrospinal fluid flows out, the cerebrospinal fluid is contacted with air and external bacteria to influence the cultivation of the cerebrospinal fluid bacteria.
(4) The use is inconvenient: the pressure range measured by the traditional piezometric tube is limited, and the pressure larger than 400mmH2O can not be measured, so that the treatment can not be guided accurately; the original piezometer tube uses the old pressure unit millimeter water column (mm.H2O column), which is inconvenient to use and needs to be converted into the new pressure unit Pa.
Disclosure of Invention
The invention provides a disposable medical liquid pressure measuring device and a closed disposable medical puncture device aiming at the problems of the prior medical devices.
According to the technical scheme adopted by the invention, on one hand, a disposable medical liquid pressure measuring device is provided, and the disposable medical liquid pressure measuring device comprises an observation tube, a connecting tube, an exhaust plate, an air filtering membrane body and a pressure measuring spring, wherein pressure measuring scale marks parallel to the tube body are arranged on the surface of an outer tube of the observation tube; the first end of observation pipe intercommunication the connecting pipe, the second end of observation pipe passes through the exhaust plate seals, the air filtering membrane body is located the inside of observation pipe and can with the inner wall sliding fit of observation pipe, the pressure measurement spring also is located the inside of observation pipe and set up between the exhaust plate with the air filtering membrane body.
Preferably, the air filtering membrane body comprises an annular plate and an air filtering membrane, wherein the outer annular surface of the annular plate is in sliding fit with the inner wall of the observation tube, and the inner annular opening of the annular plate is sealed by the air filtering membrane; the edge area of the plate surface of the annular plate is provided with a first annular clamping groove, and the first end part of the pressure measuring spring is clamped in the first annular clamping groove. Further preferably, an annular pressure measurement indication wire slot along the peripheral direction is arranged at the center of the outer ring surface of the annular plate, and red, blue or black materials are filled in the annular pressure measurement indication wire slot.
Preferably, a plurality of exhaust through holes are formed in the center area of the plate surface of the exhaust plate, a second annular clamping groove is formed in the edge area of the plate surface of the exhaust plate, and the second end part of the pressure measuring spring is clamped in the second annular clamping groove.
Preferably, the observation tube is a fully transparent tube or a partially transparent tube which is only transparent in the region of the pressure measuring scale line.
The invention adopts the technical scheme, and on the other hand, provides a closed disposable medical puncture device, which comprises the disposable medical liquid pressure measuring device, a three-way pipe, a Y-shaped pipe, a drainage bag, a needle tube and a needle core; the connecting pipe of the disposable medical liquid pressure measuring device is communicated with the second port of the parallel channel of the three-way pipe, the first port of the parallel channel of the three-way pipe is communicated with the second port of the parallel channel of the Y-shaped pipe, the port of the bypass channel of the three-way pipe is communicated with the drainage bag, the first port of the parallel channel of the Y-shaped pipe is communicated with the needle tube, the port of the bypass channel of the Y-shaped pipe is sealed by a repeatable puncture material body, and the needle core can penetrate from the port of the bypass channel of the Y-shaped pipe and extend into the needle tube.
Preferably, the drainage bag is a soft bag body and is provided with a closable opening.
In summary, the disposable medical liquid pressure measuring device and the closed disposable medical puncture device provided by the invention have the following beneficial effects: (1) The disposable medical liquid pressure measuring device provided by the invention not only can filter residual air in a pipe and ensure pressure measuring precision, but also can enable the liquid to be measured to directly act on the air filtering membrane body and compress the pressure measuring spring, and finally, the hydraulic value is directly read from the pressure measuring scale mark according to the change of the moving position of the air filtering membrane body, thereby realizing the purpose of completing hydraulic measurement by using a simple structure, having the advantages of disposable use, convenient operation and safety, and being convenient for practical popularization and application; (2) The disposable medical liquid pressure measuring device also has the advantages of stable movement of the air filtering membrane body, multi-system pressure measuring application and the like, and is further convenient for practical popularization and application; (3) The sealed disposable medical puncture device provided by the invention can not only be used for directly measuring the dynamic change process of the cerebrospinal fluid pressure without changing a tube connection tube in the lumbar puncture process, but also be used for effectively avoiding medical accidents caused by movement of the puncture needle after the lumbar puncture is successful, and simultaneously can be used for sealing drainage fluid without contacting air, so that the medical safety of a patient is further ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a disposable medical fluid pressure measuring device provided by the invention.
FIG. 2 is a schematic diagram of the front structure of the air filtration membrane provided by the invention.
FIG. 3 is a schematic side view of the air filtration membrane provided by the invention.
Fig. 4 is a schematic diagram of the front structure of the exhaust plate according to the present invention.
Fig. 5 is a schematic structural view of the sealed disposable medical puncturing device provided by the invention.
In the above figures: 1. the device comprises an observation tube 101, pressure measurement scale marks 2, a connecting tube 3, an exhaust plate 301, an exhaust through hole 302, a second annular clamping groove 4, an air filtering membrane 401, an annular plate 402, an air filtering membrane 403, a first annular clamping groove 404, an annular pressure measurement indication wire groove 5, a pressure measurement spring 6, a three-way tube 7, a Y-shaped tube 8, a drainage bag 801, a closable opening 9, a needle tube 10, a needle core 11 and a repeatable puncture material body.
Detailed Description
The disposable medical fluid pressure measuring device and the sealed disposable medical puncturing device according to the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.
Example 1
Fig. 1 shows a schematic structural view of a disposable medical liquid pressure measuring device provided by the invention, fig. 2 shows a schematic front structural view of an air filtering membrane provided by the invention, fig. 3 shows a schematic side structural view of the air filtering membrane provided by the invention, and fig. 4 shows a schematic front structural view of an exhaust plate provided by the invention.
The disposable medical liquid pressure measuring device provided by the embodiment is characterized by comprising an observation tube 1, a connecting tube 2, an exhaust plate 3, an air filtering membrane body 4 and a pressure measuring spring 5, wherein the surface of an outer tube of the observation tube 1 is provided with pressure measuring scale marks 101 parallel to the tube body; the first end of observation tube 1 communicates connecting pipe 2, the second end of observation tube 1 passes through exhaust plate 3 seals, air filter membrane body 4 is located the inside of observation tube 1 and can with the inner wall sliding fit of observation tube 1, pressure measurement spring 5 also is located the inside of observation tube 1 and set up exhaust plate 3 with air filter membrane body 4 between.
As shown in fig. 1 to 4, in the structure of the disposable medical fluid pressure measuring device, the connection tube 2 is used for abutting the opening of a tube of another medical instrument such as a drainage tube or a tee tube, so that the fluid to be measured is led from the connection tube 2 to the observation tube 1. The air filtering membrane 4 is used for filtering residual air in the tube to ensure pressure measurement precision, and is used for indirectly pushing the pressure measurement spring 5 to compress under the pushing action of the liquid to be measured until the elasticity is balanced with the pressure, and the hydraulic value can be directly read from the pressure measurement scale line 101 by utilizing the position relation between the air filtering membrane 4 and the pressure measurement scale line 101 when the air filtering membrane is balanced (because the hydraulic value and the shortened length of the pressure measurement spring 5 are in a specific linear relation), and at this time, the observation tube 1 needs to be a fully transparent tube or a partially transparent tube which is only transparent in the pressure measurement scale line area. Therefore, the disposable medical liquid pressure measuring device can achieve the purpose of hydraulic measurement by using a simple structure, has the advantages of disposability, convenient operation and safety, and is convenient for practical popularization and application.
Preferably, the air filtering membrane body 4 comprises an annular plate 401 and an air filtering membrane 402, wherein the outer annular surface of the annular plate 401 is in sliding fit with the inner wall of the observation tube 101, and the inner annular opening of the annular plate 401 is sealed by the air filtering membrane 402; a first annular locking groove 403 is provided in the plate surface edge area of the annular plate 401, and the first end of the pressure measuring spring 5 is locked in the first annular locking groove 403. As shown in fig. 2, by providing the first annular clamping groove 403, the contact relationship between the air filtering membrane body 4 and the first end portion of the pressure measuring spring 5 may be limited and stabilized, so as to ensure the movement stability of the air filtering membrane body 4 in the sliding process.
Further preferably, an annular pressure measurement indication wire groove 404 along the peripheral direction is arranged at the center of the outer ring surface of the annular plate 401, and red, blue or black materials are filled in the annular pressure measurement indication wire groove 404. As shown in fig. 3, by providing the annular pressure measurement indication wire groove 404 and filling with red, blue or black materials, the indication wire can be prevented from being worn away due to back and forth sliding while the current pressure value is indicated brightly, and the service life of one time is prolonged.
Optimally, a plurality of exhaust through holes 301 are formed in the center area of the plate surface of the exhaust plate 3, a second annular clamping groove 302 is formed in the edge area of the plate surface of the exhaust plate 3, and the second end part of the pressure measuring spring 5 is clamped in the second annular clamping groove 302. As shown in fig. 4, by providing the second annular clamping groove 302, the contact relationship between the exhaust plate 3 and the second end portion of the pressure measuring spring 5 can be limited and stabilized, so as to further ensure the movement stability of the air filtering membrane 4.
The first disposable medical liquid pressure measuring device provided by the embodiment has the following beneficial effects: (1) The disposable medical liquid pressure measuring device provided by the embodiment not only can filter residual air in a pipe and ensure pressure measuring precision, but also can enable the liquid to be measured to directly act on the air filtering membrane body and compress the pressure measuring spring, and finally, the hydraulic value is directly read from the pressure measuring scale mark according to the change of the moving position of the air filtering membrane body, so that the purpose of hydraulic measurement can be achieved by using a simple structure, and the disposable medical liquid pressure measuring device has the advantages of being disposable, convenient to operate and safe, and is convenient to popularize and apply in practice; (2) The disposable medical liquid pressure measuring device also has the advantages of stable movement of the air filtering membrane body, multi-system pressure measuring application and the like, and is further convenient for practical popularization and application.
Example two
Fig. 5 shows a schematic structural view of the sealed disposable medical puncturing device provided by the invention. The embodiment is a specific application of the first embodiment, and the closed disposable medical puncturing device provided by the embodiment comprises the disposable medical liquid pressure measuring device as described in the first embodiment, and further comprises a three-way pipe 6, a Y-shaped pipe 7, a drainage bag 8, a needle tube 9 and a needle core 10; the connecting pipe 2 of the disposable medical liquid pressure measuring device is communicated with the second port of the parallel channel of the three-way pipe 6, the first port of the parallel channel of the three-way pipe 6 is communicated with the second port of the parallel channel of the Y-shaped pipe 7, the bypass channel port of the three-way pipe 6 is communicated with the drainage bag 8, the first port of the parallel channel of the Y-shaped pipe 7 is communicated with the needle tube 9, the bypass channel port of the Y-shaped pipe 7 is closed by a repeatable puncture material body 11, and the needle core 10 can penetrate from the bypass channel port of the Y-shaped pipe 7 and extend into the needle tube 9. Further, the Y-tube 7 may be, but is not limited to, a Y-type lumbar puncture needle or a Y-type deep vein puncture needle.
As shown in fig. 5, with the aforementioned closed disposable medical puncturing device, the following operations can be achieved during lumbar puncture: firstly twisting the three-way pipe 6 to a parallel channel conduction state, namely, conducting a first port and a second port of the parallel channel of the three-way pipe 6, then performing lumbar puncture on a patient according to the operation convention, and taking out the needle core 10 after the successful lumbar puncture, wherein the hydraulic value can be directly read through the disposable medical liquid pressure measuring device according to the first embodiment or the second embodiment; and then the three-way pipe 6 is twisted to a bypass channel conducting state after pressure measurement, namely a parallel channel first port and a bypass channel port of the three-way pipe 6 are conducted, so that drainage is realized. The purpose of repeated pressure measurement can be achieved by twisting the tee 6 during the operation. Therefore, the device can not only be used for directly measuring the dynamic change process of the cerebrospinal fluid pressure without changing a tube connection tube in the lumbar puncture process, but also be used for effectively avoiding medical accidents caused by movement of the puncture needle after the lumbar puncture is successful.
Preferably, the drainage bag 8 is a soft bag body, and is provided with a closable opening 801. As shown in fig. 5, by the design, the drainage liquid can be sealed without contacting air, so that the medical safety of a patient is further ensured.
The sealed disposable medical puncturing device provided by the embodiment has the following beneficial effects: (1) The sealed disposable medical puncture device provided by the invention can not only be used for directly measuring the dynamic change process of the cerebrospinal fluid pressure without changing a tube connection tube in the lumbar puncture process, but also be used for effectively avoiding medical accidents caused by movement of the puncture needle after the lumbar puncture is successful, and simultaneously can be used for sealing drainage fluid without contacting air, so that the medical safety of a patient is further ensured.
As described above, the present invention can be preferably implemented. It will be apparent to those skilled in the art from this disclosure that there is no inventive effort required to design different types of disposable medical fluid pressure measuring devices and sealed disposable medical puncturing devices. Variations, modifications, substitutions, combinations, and alterations are also possible in those embodiments without departing from the principles and spirit of the invention.
Claims (4)
1. The disposable medical liquid pressure measuring device is characterized by comprising an observation tube (1), a connecting tube (2), an exhaust plate (3), an air filtering membrane body (4) and a pressure measuring spring (5), wherein the surface of an outer tube of the observation tube (1) is provided with pressure measuring scale marks (101) parallel to the tube body;
the first end of the observation tube (1) is communicated with the connecting tube (2), the second end of the observation tube (1) is sealed by the exhaust plate (3), the air filtering membrane body (4) is positioned in the observation tube (1) and can be in sliding fit with the inner wall of the observation tube (1), and the pressure measuring spring (5) is also positioned in the observation tube (1) and is arranged between the exhaust plate (3) and the air filtering membrane body (4);
a plurality of exhaust through holes (301) are formed in the center area of the plate surface of the exhaust plate (3), a second annular clamping groove (302) is formed in the edge area of the plate surface of the exhaust plate (3), and the second end part of the pressure measuring spring (5) is clamped in the second annular clamping groove (302);
the observation tube (1) is a full transparent tube or a local transparent tube which is only transparent in the pressure measurement scale line area;
the air filtering membrane body (4) comprises an annular plate (401) and an air filtering membrane (402), wherein the outer annular surface of the annular plate (401) is in sliding fit with the inner wall of the observation tube (1), and the inner annular opening of the annular plate (401) is sealed by the air filtering membrane (402);
a first annular clamping groove (403) is formed in the edge area of the plate surface of the annular plate (401), and the first end portion of the pressure measuring spring (5) is clamped in the first annular clamping groove (403).
2. A disposable medical fluid pressure measuring device according to claim 1, wherein the outer circumferential surface center of the annular plate (401) is provided with an annular pressure measuring indication line groove (404) along the outer circumferential direction, and red, blue or black material is filled in the annular pressure measuring indication line groove (404).
3. A sealed disposable medical puncturing device, which is characterized by comprising the disposable medical liquid pressure measuring device according to any one of claims 1 or 2, and further comprising a three-way pipe (6), a Y-shaped pipe (7), a drainage bag (8), a needle tube (9) and a needle core (10);
the connecting pipe (2) of disposable medical liquid pressure measuring device communicates the parallel channel second port of three-way pipe (6), the parallel channel first port of three-way pipe (6) communicates the parallel channel second port of Y type pipe (7), the bypass channel port of three-way pipe (6) communicates drainage bag (8), the parallel channel first port intercommunication of Y type pipe (7) needle tubing (9), the bypass channel port of Y type pipe (7) is closed by repeatable puncture material body (11), nook closing member (10) can follow the bypass channel port of Y type pipe (7) penetrates and stretches into needle tubing (9).
4. A closed disposable medical puncturing device as claimed in claim 3, wherein the drainage bag (8) is a flexible bag body and is provided with a closable opening (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485744.7A CN108066833B (en) | 2017-12-29 | 2017-12-29 | Disposable medical liquid pressure measuring device and sealed disposable puncture device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485744.7A CN108066833B (en) | 2017-12-29 | 2017-12-29 | Disposable medical liquid pressure measuring device and sealed disposable puncture device |
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| CN108066833A CN108066833A (en) | 2018-05-25 |
| CN108066833B true CN108066833B (en) | 2024-04-09 |
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| CN206183254U (en) * | 2016-08-10 | 2017-05-24 | 孙艺芩 | Central venous pressure measurer |
| CN106821354A (en) * | 2017-02-21 | 2017-06-13 | 中国医学科学院北京协和医院 | Disposable center venous pressure measuring device and its application method |
| CN209361441U (en) * | 2017-12-29 | 2019-09-10 | 刘元 | A kind of Dispoable medical liquid pressure measuring unit |
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| CN108066833A (en) | 2018-05-25 |
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