CN111543958A - Blood gas needle positioning device with detectable beating area - Google Patents

Blood gas needle positioning device with detectable beating area Download PDF

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Publication number
CN111543958A
CN111543958A CN202010511616.0A CN202010511616A CN111543958A CN 111543958 A CN111543958 A CN 111543958A CN 202010511616 A CN202010511616 A CN 202010511616A CN 111543958 A CN111543958 A CN 111543958A
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tube
guide
gas needle
top plate
blood gas
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CN202010511616.0A
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CN111543958B (en
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宋振宇
叶定伟
宋佃海
姚秋明
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Fudan University Shanghai Cancer Center
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Fudan University Shanghai Cancer Center
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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
    • A61B5/48—Other medical applications
    • A61B5/4887—Locating particular structures in or on the body
    • A61B5/489—Blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/15003—Source of blood for venous or arterial blood
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150748—Having means for aiding positioning of the piercing device at a location where the body is to be pierced
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150801—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming
    • A61B5/150824—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming by visual feedback
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Vascular Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to the field of medical devices. The blood gas needle positioning device with the detectable pulsation region comprises a shell, wherein the shell comprises a hollow tube, a top plate, a side plate, a guide tube and a film, a through hole is formed in the top plate, the outer wall of the guide tube is fixedly connected with the through hole, and an inner hole of the guide tube is used as a guide hole for guiding the blood gas needle to be vertically inserted; the film is connected with the bottoms of the side plate and the guide tube, and is provided with an opening communicated with the guide hole; the top plate, the side plate, the film and the guide pipe enclose a cavity for containing detection liquid; the top of the top plate is connected with a hollow tube, and the side wall of the hollow tube is provided with a liquid level scale mark for marking the height of the liquid level in the hollow tube. The device replaces the traditional method for positioning by touching the femoral artery with fingers, is convenient to accurately find the position of the femoral artery, and improves the accuracy and stability of blood sampling.

Description

Blood gas needle positioning device with detectable beating area
Technical Field
The invention relates to the field of machinery, in particular to a positioning device for a blood gas needle.
Background
In clinical work, blood gas analysis is an important means for understanding the respiratory function and acid-base balance of patients, and is widely applied to diagnosis of hypoxemia and respiratory failure, acid-base balance diagnosis, selection of surgical indications and the like. The blood-gas analysis adopts arterial blood samples, and commonly used blood taking arteries are femoral artery and radial artery. For cancer and other cachexia patients, superficial arteries such as radial artery are difficult to draw blood for testing due to internal diameter contracture, while femoral artery has large diameter and vigorous blood circulation and is often used as a puncture artery for blood and gas analysis. Clinically, the patient usually takes the part near the groin on one side, the index finger and the middle finger touch the femoral artery with the strongest pulsation and fix, the other hand-held syringe vertically penetrates into the artery from the space between the two fingers and sucks a blood sample, after the extraction is finished, the needle head is inserted into the rubber cap to isolate air, and then the blood gas analyzer is used for detection. However, for young medical staff, the needle head needs to be fixed by two fingers during the needle insertion process, so that the fingers are easy to be pricked, the deviation is easy to occur during the needle insertion process, the arterial blood vessel cannot be accurately pricked, repeated operation is sometimes needed, great pain is brought to patients, and the medical staff has the risk of occupational exposure.
CN201420441353.0 discloses an automatic artery puncture device, in which the artery position is found by a B-ultrasonic probe. The cost is high. The B-ultrasonic probe can only search the position of an artery, cannot realize the guidance of puncture and has single function. And the manufacturing cost is expensive, and the B-ultrasonic detection is needed to be firstly carried out when the ultrasonic diagnostic device is used, so that the ultrasonic diagnostic device is very inconvenient. At present, a device which can realize the guide of a blood gas needle and the search of an artery is lacked.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a pulsation region detectable type blood gas needle positioning device to solve at least one technical problem.
The technical scheme of the invention is as follows: the blood gas needle positioning device with the detectable pulsation area comprises a shell, and is characterized in that the shell comprises a hollow tube, a top plate, a side plate, a guide tube and a film, wherein a through hole is formed in the top plate, the outer wall of the guide tube is fixedly connected with the through hole, and an inner hole of the guide tube is used as a guide hole for guiding the blood gas needle to be vertically inserted;
the thin film is connected with the bottom of the side plate, the thin film is also connected with the bottom of the guide tube, and the thin film is provided with an opening communicated with the guide hole;
the top plate, the side plate, the film and the guide pipe enclose a cavity for containing detection liquid, and the cavity and the guide hole are separated by the guide pipe;
the top of the guide tube is positioned above the top plate, the top of the guide tube is provided with an extension part extending outwards, and an operating part for hand-holding and fixing is arranged on the guide tube and positioned between the extension part and the top plate;
the top plate is connected with the hollow pipe, the hollow pipe is communicated with the cavity, and liquid level scale marks used for marking the height of the liquid level in the hollow pipe are arranged on the side wall of the hollow pipe.
The device replaces the traditional positioning of the position of touching the artery by the finger, is convenient for accurately finding the most obvious position of artery pulsation, and greatly reduces the cost compared with a B-ultrasonic probe. When the device is used, the device is attached to the skin, and the liquid level of the hollow tube is extruded by the test liquid to judge whether the hollow tube is the most significant part of the artery pulse, so that the positioning of the artery position is realized.
When an operator pricks the blood-gas needle, the needle head is guided to vertically enter the needle through the guide tube, compared with the traditional mode that the needle head penetrates from the middle after two fingers are fixed, the problem that the hand of an operator is accidentally injured by the needle head is effectively avoided, and the safety in use is improved.
Further preferably, a silica gel layer or a rubber layer is adhered to the guide tube. After the blood gas needle is convenient to realize collecting blood, insert silica gel layer or rubber layer with the syringe needle of blood gas needle, isolated air. A silica gel layer or a rubber layer is directly fixed on the guide pipe. The problem that fingers are easily punctured when the needle head is pricked into the rubber cap after blood sampling is finished is avoided.
Optionally, a silica gel layer or a rubber layer is adhered to the inner wall of the guide tube.
The guide tube may include an inner tube and an outer tube, which are disposed inside and outside, and an inner hole of the inner tube is the guide hole;
the inner pipe body and the outer pipe body are connected to form a containing groove used for containing the silica gel layer or the rubber layer.
The guide of the blood-gas needle is convenient.
Preferably, the top plate is provided with a water inlet, and the water inlet is provided with a cover body. The detection liquid with different colors can be conveniently injected.
Further preferably, the water inlet is located on the top plate.
Further preferably, the water inlet is further provided with a rubber plug for the injection of the detection liquid by the puncture of the injection needle.
The quick leading-in and the quick derivation of liquid are detected to the syringe needle of being convenient for to insert.
Further preferably, the hollow tube has an inner diameter of 0.8mm to 1.3 mm.
So as to increase the height variation difference of the liquid level in the hollow tube at different positions of the artery pulsation degree.
Further preferably, the hollow tube comprises a capillary tube and a supporting tube which are arranged inside and outside, and the supporting tube is connected with the top plate in a welding mode;
the bottom of the capillary tube extends into the lower part of the top plate;
an observation window is arranged on the supporting tube, and the liquid level scale marks are arranged on the observation window.
Facilitating the fixation of the capillary tube.
Further preferably, the length of the film is 2cm to 3 cm.
The obvious part of the pulse can be conveniently found. That is to say for cylindrical containers, the diameter of the container is 2cm to 3 cm.
Preferably, a silica gel layer is fixed on the inner wall of the guide tube, an inner hole of the guide tube, which is fixed with the silica gel layer, is a channel through which the blood-gas needle passes, and the channel comprises a cylindrical upper part, a conical middle part with a wide upper part and a narrow lower part which are sequentially arranged from top to bottom;
the toper middle part is used for holding the pintle department of blood gas needle, cylindric lower part is used for holding the syringe needle of blood gas needle, cylindric upper portion is used for holding the cylinder of blood gas needle.
This patent is convenient for guarantee the guide support effect to the cylinder through the structure of passageway.
Further preferably, the bottom of the guide tube comprises a positioning part and a deformation part which are arranged up and down, and the deformation part is a corrugated tube part capable of longitudinally deforming;
the inner diameter of the positioning part is larger than the outer diameter of the blood-gas needle head, and the difference value is not larger than 2 mm;
the inner diameter of the minimum inner diameter position of the deformation part is not smaller than the inner diameter of the positioning part.
Be convenient for through the setting of bellows portion, be convenient for realize carrying out self-adaptation deformation according to the degree of beating, compare the liquid level altitude variation of the hollow tube that stereoplasm plastics directly supported and lean on above beating, the power that changes in the production of beating caused.
The bottom of the guide tube is lower than the bottom of the side plate, and the height difference is 1.5mm-2.5 mm. So that the artery pulsation drives the liquid fluctuation.
Drawings
FIG. 1 is a sectional view of embodiment 1 of the present invention;
FIG. 2 is a sectional view of embodiment 2 of the present invention;
FIG. 3 is a cross-sectional view of the present invention employing a guide tube configuration;
FIG. 4 is a cross-sectional view of an alternative guide tube configuration for use with the present invention;
FIG. 5 is a schematic view of a structure of the blood gas needle of the present invention;
fig. 6 is a cross-sectional view of another guide tube configuration used in the present invention.
In the figure: 1 is the shell, 2 is the guide tube, 3 is the silica gel layer, 4 is the hollow tube, 6 is the rubber buffer, 7 is the lid, 8 is the blood gas needle, 11 is the roof, 12 is the curb plate, 14 is the film, 21 is interior body, 22 is outer body, 23 is the passageway, 24 is the extension, 25 is bellows portion, 81 is the pintle.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In specific embodiment 1, referring to fig. 1, the blood gas needle positioning device with a detectable pulsation region includes a housing 1, the housing 1 includes a top plate 11, a hollow tube, a side plate 12, a guide tube 2 and a film 14, the top plate 11 is provided with a through hole, the outer wall of the guide tube 2 is fixedly connected with the through hole, and the inner wall of the guide tube 2 is used as a guide hole for guiding the blood gas needle to be vertically inserted; the film 14 is connected with the bottoms of the side plate 12 and the guide tube 2, and the film 14 is provided with an opening communicated with the guide hole; the top plate 11, the side plate 12, the film 14 and the guide pipe 2 enclose a cavity for containing detection liquid, and the cavity and the guide hole are separated by the guide pipe; the top of the guide tube 2 is positioned above the top plate 11, the top of the guide tube 2 is provided with an extension part 24 extending outwards, and a gap between the extension part 24 and the top plate 11 is an operation part for holding and fixing; the top plate 11 is connected with the hollow pipe, the hollow pipe is communicated with the cavity, and liquid level scale marks used for marking the height of the liquid level in the hollow pipe are arranged on the side wall of the hollow pipe. The device replaces the traditional positioning of the position of touching the artery by the finger, is convenient for accurately finding the most obvious position of artery pulsation, and greatly reduces the cost compared with a B-ultrasonic probe. When the device is used, the device is attached to the skin, and the liquid level of the hollow tube is extruded by the test liquid to judge whether the hollow tube is the most significant part of the artery pulse, so that the positioning of the artery position is realized.
When an operator pricks the blood-gas needle, the needle head is guided to vertically enter the needle through the guide tube, compared with the traditional mode that the needle head penetrates from the middle after two fingers are fixed, the problem that the hand of an operator is accidentally injured by the needle head is effectively avoided, and the safety in use is improved.
A silica gel layer or a rubber layer is adhered on the guide tube 2. After the blood gas needle is convenient to realize collecting blood, insert silica gel layer or rubber layer with the syringe needle of blood gas needle, isolated air. After the blood sampling is finished and the needle head is pulled out, the needle head is inserted into the silica gel layer or the rubber layer on the inner wall of the guide tube. The finger protector can isolate air and reduce the exposure risk of finger pricks. The silica gel layer or the rubber layer is positioned at the upper end part of the guide pipe.
The inner diameter of the hollow tube 4 is 0.8mm to 1.3 mm. It is convenient to observe the difference of the height change of the liquid level in the hollow tube 4 at different pulsation degrees. The length of the film 14 is 2cm-3 cm. The obvious part of the pulse can be conveniently found. The film 14 may be a PVC film layer. The height of the container is 1cm-1.5 cm.
Referring to fig. 2, in embodiment 2, a water inlet is formed at the top of the container, and a cover 7 is installed on the water inlet. Different detection liquids can be injected conveniently. Can be detection liquid with different colors. The water inlet is positioned on the top plate. The water inlet is also provided with a rubber plug 6 for the injection of the detection liquid by the puncture of an injection needle. The quick leading-in and the quick derivation of liquid are detected to the syringe needle of being convenient for to insert.
In specific embodiment 3, the hollow tube includes an inner capillary tube and an outer capillary tube, and the support tube is welded to the top plate; the bottom of the capillary tube extends into the lower part of the top plate; an observation window is arranged on the supporting tube, and liquid level scale marks are arranged on the observation window. Facilitating the fixation of the capillary tube. The capillary tube extends into the lower area of the top plate and is provided with a water seepage hole.
On the basis of the above-described specific embodiment, the following may be adopted for the structure of the guide tube:
referring to fig. 3, the guiding tube includes an inner tube 21 and an outer tube 22 disposed inside and outside, and a guiding hole is formed in the center of the inner tube 21; the inner tube 21 and the outer tube 22 are connected to form a holding groove for holding the silica gel layer or the rubber layer. The guide of the blood-gas needle is convenient. The inner tube body 21 comprises a tapered portion and a cylindrical portion, wherein the tapered portion and the cylindrical portion are sequentially connected from top to bottom, the tapered portion is wide at the top and narrow at the bottom, the cylindrical portion is used for accommodating a needle head of the blood needle, the outer diameter of the cylindrical portion is not smaller than that of the blood needle, and the difference value is not larger than 2 mm. The top orifice of the inner pipe body is lower than that of the outer pipe body. The area that the blood-gas needle can be inserted is increased after the blood collection of the blood-gas needle is finished.
Alternatively, the guide tube may include a tapered portion having a wide top and a narrow bottom, and a cylindrical portion having a cylindrical shape, and the tapered portion may be in vertical communication with the cylindrical portion. The guide of the blood-gas needle is convenient. A silicone or rubber layer is adhered to the taper. The blood-gas needle can be inserted into the blood-gas needle to isolate air conveniently. The cylindrical portion is adapted to receive a needle tip of a blood needle. The inner diameter of the cylindrical part is 0.03mm-0.05 mm. The axial length of the cylindrical portion is not less than 0.3 cm. The lower end of the conical part is not adhered with a silica gel layer or a rubber layer.
Or the inner hole of the guide tube is a channel for passing through the blood-gas needle, and the channel comprises a cylindrical upper part, a conical middle part and a cylindrical lower part which are sequentially arranged from top to bottom, wherein the conical middle part is wide at the top and narrow at the bottom. The conical middle part is used for accommodating a pintle of the blood gas needle, the cylindrical lower part is used for accommodating a needle head of the blood gas needle, and the cylindrical upper part is used for accommodating a needle cylinder of the blood gas needle. This patent is convenient for guarantee the guide support effect to the cylinder through the structure of passageway. The guide that gets into skin perpendicularly through cylindric lower part realizes the syringe needle through the setting at toper middle part, realizes the fixed to the pintle, further stabilizes the motion of the perpendicular skin direction of syringe needle then, has increased the stability of the angle of income needle. The inner diameter of the cylindrical upper part is 1-1.5 cm. The axial length of the cylindrical upper part is 1cm-2 cm. The inner diameter of the cylindrical lower part is 0.03mm-0.05 mm. The axial length of the cylindrical lower portion is not less than 0.3 cm. The taper angle of the middle part of the taper is 3-4 degrees.
Or, referring to fig. 4 and 5, a silica gel layer is fixed on the inner wall of the guiding tube, the inner wall of the guiding tube after the silica gel layer is fixed on the guiding tube is a channel 23 for passing through the blood needle, and the channel 23 comprises a cylindrical upper part, a tapered middle part with a wide upper part and a narrow lower part which are sequentially arranged from top to bottom. The conical middle part is used for accommodating the pintle 81 of the blood gas needle 8, the cylindrical lower part is used for accommodating the needle head of the blood gas needle, and the cylindrical upper part is used for accommodating the needle cylinder of the blood gas needle. This patent is convenient for guarantee the guide support effect to the cylinder through the structure of passageway. The guide of syringe needle vertical incidence is realized through cylindric lower part, through the setting at toper middle part, realizes the fixed to the pintle, further stabilizes the motion of the perpendicular skin direction of syringe needle then, has increased the stability of the angle of income needle. The inner diameter of the cylindrical upper part is 1-1.5 cm. The axial length of the cylindrical upper part is 1cm-2 cm. The inner diameter of the cylindrical lower part is 0.03mm-0.05 mm. The axial length of the cylindrical lower portion is not less than 0.3 cm. The taper angle of the middle part of the taper is 3-4 degrees. The inner wall of the silica gel layer forms a conical middle part. The guiding tube includes cylindric upper portion and lower part that sets up from top to bottom, and the silica gel layer adheres in the bottom on upper portion.
Or, on the basis of the structure of the guide tube, referring to fig. 6, the bottom of the guide tube comprises a positioning part and a deformation part which are arranged up and down, and the deformation part is a corrugated pipe part 25 which can be longitudinally deformed; the inner diameter of the positioning part is larger than the outer diameter of the blood-gas needle head, and the difference value is not larger than 2 mm; the inner diameter of the minimum inner diameter position of the deformation part is not less than the inner diameter of the positioning part. The axial length of the deformation part is 1mm-2 mm. Be convenient for through the setting of bellows portion, be convenient for realize carrying out self-adaptation deformation according to the degree of beating, compare the liquid level altitude variation of the hollow tube that stereoplasm plastics directly supported and lean on above beating, the power that changes in the production of beating caused. Or the bottom of the guide pipe is lower than the bottom of the side plate, and the height difference is 1.5mm-2.5 mm. So that the artery pulsation drives the liquid fluctuation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. The blood-gas needle positioning device with the detectable pulsation area comprises a shell and is characterized in that the shell comprises a top plate, a side plate, a guide tube, a hollow tube and a film, wherein a through hole is formed in the top plate, the outer wall of the guide tube is fixedly connected with the through hole, and an inner hole of the guide tube is used as a guide hole for guiding the blood-gas needle to be vertically inserted;
the thin film is connected with the bottom of the side plate, the thin film is also connected with the bottom of the guide tube, and the thin film is provided with an opening communicated with the guide hole;
the top plate, the side plate, the film and the guide pipe enclose a cavity for containing detection liquid, and the cavity and the guide hole are separated by the guide pipe;
the top of the guide tube is positioned above the top plate, the top of the guide tube is provided with an extension part extending outwards, and an operating part for hand-holding and fixing is arranged on the guide tube and positioned between the extension part and the top plate;
the top plate is connected with the hollow pipe, the hollow pipe is communicated with the cavity, and liquid level scale marks used for marking the height of the liquid level in the hollow pipe are arranged on the side wall of the hollow pipe.
2. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: a water inlet is formed in the top plate, and a cover body is installed on the water inlet.
3. The pulsatile region detectable blood gas needle positioning device of claim 2, wherein: the water inlet is also provided with a rubber plug for injecting detection liquid by a puncture needle.
4. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: the bottom of the guide pipe is lower than the bottom of the side plate, and the height difference is 1.5mm-2.5 mm;
the inner diameter of the hollow pipe is 0.8mm-1.3 mm.
5. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: the hollow tube comprises a capillary tube and a supporting tube which are arranged inside and outside, and the supporting tube is connected with the top plate in a welding way;
the bottom of the capillary tube extends into the lower part of the top plate;
an observation window is arranged on the supporting tube, and the liquid level scale marks are arranged on the observation window.
6. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: the length of the film is 2cm-3 cm.
7. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: and a silica gel layer or a rubber layer is adhered to the guide pipe.
8. The pulsatile region detectable blood gas needle positioning device of claim 7, wherein: the guide tube comprises an inner tube body and an outer tube body which are arranged inside and outside, and an inner hole of the inner tube body is the guide hole;
the inner pipe body and the outer pipe body are connected to form a containing groove used for containing the silica gel layer or the rubber layer.
9. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: a silica gel layer is fixed on the inner wall of the guide tube, an inner hole of the guide tube, which is fixed with the silica gel layer, is a channel for passing through the blood needle, and the channel comprises a cylindrical upper part, a conical middle part and a cylindrical lower part which are sequentially arranged from top to bottom;
the toper middle part is used for holding the pintle department of blood gas needle, cylindric lower part is used for holding the syringe needle of blood gas needle, cylindric upper portion is used for holding the cylinder of blood gas needle.
10. The pulsatile region detectable blood gas needle positioning device of claim 1, wherein: the bottom of the guide tube comprises a positioning part and a deformation part which are arranged up and down, and the deformation part is a corrugated tube part capable of longitudinally deforming;
the inner diameter of the positioning part is larger than the outer diameter of the blood-gas needle head, and the difference value is not larger than 2 mm;
the inner diameter of the minimum inner diameter position of the deformation part is not smaller than the inner diameter of the positioning part.
CN202010511616.0A 2020-06-08 2020-06-08 Blood gas needle positioning device with detectable beating area Active CN111543958B (en)

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CN202010511616.0A CN111543958B (en) 2020-06-08 2020-06-08 Blood gas needle positioning device with detectable beating area

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CN111543958B CN111543958B (en) 2023-01-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911707A (en) * 1997-04-09 1999-06-15 Datascope Investment Corp. Needle guide
CN103328022A (en) * 2011-01-27 2013-09-25 美敦力迷你迈德公司 Insertion device systems and methods
US20140107578A1 (en) * 2009-01-30 2014-04-17 Terumo Kabushiki Kaisha Injection needle assembly and drug injection device
CN103948984A (en) * 2014-04-11 2014-07-30 李泉 Arterial remaining needle capable of displaying arterial pulsation
CN206197933U (en) * 2016-08-23 2017-05-31 蒋洪宇 A kind of arteriopuncture servicing unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911707A (en) * 1997-04-09 1999-06-15 Datascope Investment Corp. Needle guide
US20140107578A1 (en) * 2009-01-30 2014-04-17 Terumo Kabushiki Kaisha Injection needle assembly and drug injection device
CN103328022A (en) * 2011-01-27 2013-09-25 美敦力迷你迈德公司 Insertion device systems and methods
CN103948984A (en) * 2014-04-11 2014-07-30 李泉 Arterial remaining needle capable of displaying arterial pulsation
CN206197933U (en) * 2016-08-23 2017-05-31 蒋洪宇 A kind of arteriopuncture servicing unit

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