CN111543958B - Blood gas needle positioning device with detectable beating area - Google Patents

Abstract

The invention relates to the field of medical instruments. The pulsating area detectable blood gas needle positioning device includes a shell, the shell includes a hollow tube, a top plate, a side plate, a guide tube and a film, a through hole is opened on the top plate, the outer wall of the guide tube is fixedly connected with the through hole, and the guide tube The inner hole is the guide hole used to guide the vertical insertion of the blood gas needle; the film is connected to the bottom of the side plate and the guide tube, and the film is provided with an opening that communicates with the guide hole; the top plate, the side plate, the film and the guide tube A cavity for accommodating the detection liquid is formed; a hollow tube is connected above the top plate, and a liquid level scale line for marking the liquid level in the hollow tube is provided on the side wall of the hollow tube. The device replaces the traditional method of locating the position of the femoral artery by touching the finger with a finger, facilitates accurate finding of the position of the femoral artery, and improves the accuracy and stability of blood collection.

Description

Pulse area detectable blood gas needle positioning device

technical field

The invention relates to the mechanical field, in particular to a blood gas needle positioning device.

Background technique

In clinical work, blood gas analysis is an important means to understand the patient's respiratory function and acid-base balance. It is widely used in the diagnosis of hypoxemia and respiratory failure, acid-base balance diagnosis, and selection of surgical indications. Arterial blood samples are used for blood gas analysis, and the commonly used arteries for blood collection are femoral artery and radial artery. For patients with cachexia caused by cancer or other reasons, superficial arteries such as the radial artery are difficult to draw blood for testing due to internal diameter contracture, while the femoral artery has a large diameter and abundant blood circulation, so it is often used as a puncture artery for blood gas analysis. Clinically, one side of the groin is often taken, and the index finger and middle finger of one hand touch the strongest pulsation point of the femoral artery and fix it. The other hand holds a syringe and inserts the artery vertically from between the two fingers to draw blood samples. After the extraction, the needle is inserted into the rubber cap to isolate the air. , and then detected with a blood gas analyzer. However, for young medical staff, because the needle needs to be fixed by two fingers during the needle insertion process, it is easy to prick the fingers, and it is easy to deviate during the needle insertion process, and it cannot be accurately inserted into the arterial vessel. Sometimes it is necessary to repeat the operation many times, thus It brings great suffering to patients, and medical staff also has the risk of occupational exposure.

CN201420441353.0 discloses an automatic arterial puncturer. In the above-mentioned patent, a B-ultrasound probe is used to find the position of the artery. higher cost. The B-ultrasound probe can only find the position of the artery, but cannot guide the puncture, and has a single function. And the cost is expensive, and it needs to pass the B-ultrasound test before use, which is very inconvenient. At present, there is a lack of a device that can realize both the guidance of the blood gas needle and the arterial exploration.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a pulse region detectable blood gas needle positioning device to solve at least one of the above technical problems.

The technical solution of the present invention is: a detectable blood gas needle positioning device in the pulsating area, including a housing, characterized in that the housing includes a hollow tube, a top plate, a side plate, a guide tube and a film, and a channel is opened on the top plate. A hole, the outer wall of the guide tube is fixedly connected to the through hole, and the inner hole of the guide tube is used as a guide hole for guiding the vertical insertion of the blood gas needle;

The film is connected to the bottom of the side plate, the film is also connected to the bottom of the guide tube, and the film is provided with an opening leading to the guide hole;

The top plate, the side plate, the film and the guide tube form a cavity for containing the detection liquid, and the cavity is separated from the guide hole by the guide tube;

The top of the guide tube is located above the top plate, and the top of the guide tube is provided with an outwardly extending extension, and the area between the extension and the top plate on the guide tube is used for holding fixed operating unit;

The top plate is connected to the hollow tube, the hollow tube is connected to the cavity, and the side wall of the hollow tube is provided with a liquid level scale line for marking the liquid level in the hollow tube.

This device replaces the positioning of the traditional finger touching the position of the artery, which is convenient for accurately finding the most significant position of the arterial pulse. Compared with the B-ultrasound probe, the cost is greatly reduced. When the device is used, it is attached to the skin, and the test liquid is squeezed to the liquid level of the hollow tube to judge whether it is the most significant place of arterial pulsation, and then realize the positioning of the arterial position.

When the operator pricks the blood gas needle, the needle is guided vertically into the needle through the guide tube. Compared with the previous method where the needle passes through the middle after the two fingers are fixed, it effectively avoids the problem of accidental injury to the operator's hand by the needle and improves the operation time. security.

Further preferably, a silicone layer or a rubber layer is adhered to the guide tube. It is convenient to realize the blood gas needle after blood collection, insert the needle of the blood gas needle into the silicone layer or the rubber layer to isolate the air. A silicone layer or a rubber layer is directly fixed on the guide tube. The problem of easy finger pricking when the needle is inserted into the rubber cap after blood collection is avoided.

It may be that a silicone layer or a rubber layer is adhered to the inner wall of the guide tube.

It may also be that the guide tube includes an inner tube body and an outer tube body arranged inside and outside, and the inner hole of the inner tube body is the guide hole;

The inner tube body is connected with the outer tube body to form an accommodating groove for accommodating the silicone layer or the rubber layer.

It is convenient for the guidance of the blood gas needle.

Further preferably, the top plate defines a water inlet, and a cover is installed on the water inlet. It is convenient to inject detection fluids of different colors.

Further preferably, the water inlet is located on the top plate.

Further preferably, the water inlet is also equipped with a rubber stopper for injecting the detection liquid through the injection needle.

It is convenient to insert the injection needle to realize the rapid introduction and rapid export of the detection solution.

Further preferably, the inner diameter of the hollow tube is 0.8mm-1.3mm.

It is convenient to increase the height change difference of the liquid level in the hollow tube at different positions of arterial pulse.

Further preferably, the hollow tube includes capillary tubes arranged inside and outside and a support tube, and the support tube is connected to the top plate by welding;

The bottom of the capillary protrudes below the top plate;

An observation window is provided on the support tube, and the liquid level scale line is provided on the observation window.

Facilitates the fixing of capillaries.

Further preferably, the length of the film is 2cm-3cm.

It is convenient to find the place where the pulse is obvious. That is to say, for a cylindrical container, the diameter of the container is 2cm-3cm.

Further preferably, the inner wall of the guide tube is fixed with a silica gel layer, and the inner hole of the guide tube after the silica gel layer is fixed is a channel through which the blood gas needle passes, and the channel includes cylindrical upper parts arranged in sequence from top to bottom , a tapered middle part with a wide top and a narrow bottom, and a cylindrical lower part;

The tapered middle part is used to accommodate the pintle of the blood gas needle, the cylindrical lower part is used to accommodate the needle head of the blood gas needle, and the cylindrical upper part is used to accommodate the barrel of the blood gas needle.

The structure of the channel in this patent is convenient to guarantee the effect of guiding and supporting the syringe.

Further preferably, the bottom of the guide tube includes a positioning portion arranged up and down and a deformation portion, and the deformation portion is a longitudinally deformable bellows portion;

The inner diameter of the positioning part is greater than the outer diameter of the needle of the blood gas needle, and the difference is not more than 2mm;

The inner diameter at the smallest inner diameter of the deformation part is not smaller than the inner diameter of the positioning part.

It is convenient to set the bellows part, and it is convenient to realize adaptive deformation according to the degree of pulsation. Compared with hard plastic directly abutting against the pulsation, it is easier to change the liquid level of the hollow tube caused by the force generated by the pulsation.

It may also be that the bottom of the guide tube is lower than the bottom of the side plate, and the height difference is 1.5mm-2.5mm. Facilitate arterial pulses to drive fluid fluctuations.

Description of drawings

Fig. 1 is the sectional view of specific embodiment 1 of the present invention;

Fig. 2 is the sectional view of specific embodiment 2 of the present invention;

Fig. 3 is a cross-sectional view of a guiding tube structure adopted by the present invention;

Fig. 4 is the sectional view that another kind of guide tube structure is adopted in the present invention;

Fig. 5 is a schematic structural view of the blood gas needle of the present invention;

Fig. 6 is a cross-sectional view of another guiding tube structure adopted in the present invention.

In the figure: 1 is the shell, 2 is the guide tube, 3 is the silicone layer, 4 is the hollow tube, 6 is the rubber plug, 7 is the cover, 8 is the blood gas needle, 11 is the top plate, 12 is the side plate, 14 is the film , 21 is an inner tube body, 22 is an outer tube body, 23 is a channel, 24 is an extension part, 25 is a bellows part, and 81 is a pintle.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

Specific embodiment 1, referring to Fig. 1, the pulse region detectable blood gas needle positioning device includes a housing 1, and the housing 1 includes a top plate 11, a hollow tube, a side plate 12, a guide tube 2 and a film 14, and 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 vertical insertion of the blood gas needle; the film 14 is connected with the side plate 12 and the bottom of the guide tube 2, and the film 14 is provided with an opening leading to the guide hole; the top plate 11, the side plate 12, the film 14 and the guide tube 2 form a cavity for containing the detection liquid, and the cavity and the guide hole are separated by the guide tube; the guide tube 2 The top of the top is located above the top plate 11, and the top of the guide tube 2 is provided with an outwardly extending extension 24, and the gap between the extension 24 and the top plate 11 is an operating part for holding and fixing; the top plate 11 is connected to the hollow tube , the hollow tube communicates with the cavity, and the side wall of the hollow tube is provided with a liquid level scale line for marking the liquid level in the hollow tube. This device replaces the positioning of the traditional finger touching the position of the artery, which is convenient for accurately finding the most significant position of the arterial pulse. Compared with the B-ultrasound probe, the cost is greatly reduced. When the device is used, it is attached to the skin, and the test liquid is squeezed to the liquid level of the hollow tube to judge whether it is the most significant place of arterial pulsation, and then realize the positioning of the arterial position.

When the operator pricks the blood gas needle, the needle is guided vertically into the needle through the guide tube. Compared with the previous method where the needle passes through the middle after the two fingers are fixed, it effectively avoids the problem of accidental injury to the operator's hand by the needle and improves the operation time. security.

A silicone layer or a rubber layer is adhered on the guide tube 2 . It is convenient to realize the blood gas needle after blood collection, insert the needle of the blood gas needle into the silicone layer or the rubber layer to isolate the air. After the blood collection is completed, the needle is pulled out, and inserted into the silicone layer or rubber layer on the inner wall of the guide tube. It can not only isolate the air, but also reduce the exposure risk of finger pricks. A silicone or rubber layer is located at the upper end of the guide tube.

The inner diameter of the hollow tube 4 is 0.8mm-1.3mm. It is convenient to observe the difference in the height of the liquid level in the hollow tube 4 at different degrees of pulsation. The length of the film 14 is 2cm-3cm. It is convenient to find the place where the pulse is obvious. The membrane 14 may be a PVC film layer. The height of the container is 1cm-1.5cm.

Referring to Fig. 2, the specific embodiment 2, a water inlet is provided on the top of the container, and a cover 7 is installed on the water inlet. It is convenient to inject different detection solutions. It can be a detection solution of different colors. The water inlet is located on the top plate. The water inlet is also equipped with a rubber stopper 6 used for injecting the detection liquid through the injection needle. It is convenient to insert the injection needle to realize the rapid introduction and rapid export of the detection solution.

In specific embodiment 3, the hollow tube includes a capillary and a support tube arranged inside and outside, and the support tube is connected to the top plate by welding; the bottom of the capillary extends into the bottom of the top plate; the support tube is provided with an observation window, and the observation window is provided with a liquid level scale line . Facilitates the fixing of capillaries. The capillary extends into the lower area of the top plate to open water seepage holes.

On the basis of the above specific embodiments, the following scheme can be adopted for the structure of the guide tube:

Referring to Fig. 3, the guide tube includes an inner tube body 21 and an outer tube body 22 arranged inside and outside, and the center of the inner tube body 21 is a guide hole; Layer holding slots. It is convenient for the guidance of the blood gas needle. The inner tube body 21 includes a tapered part with a wide top and a narrow bottom and a cylindrical cylindrical part connected up and down in sequence. The cylindrical part is used to accommodate the needle of the blood gas needle. The outer diameter of the cylindrical part is not smaller than the outer diameter of the blood gas needle, and the difference Not greater than 2mm. The top nozzle of the inner body is lower than the top nozzle of the outer body. It is convenient for the blood gas needle to increase the area where the blood gas needle can be inserted after the blood collection is completed.

Alternatively, the guide tube may include a tapered portion with a wide top and a narrow bottom and a cylindrical cylindrical portion, and the tapered portion and the cylindrical portion communicate up and down. It is convenient for the guidance of the blood gas needle. A silicone layer or a rubber layer is adhered to the tapered portion. It is convenient for the blood gas needle to penetrate and isolate the air. The cylindrical part is used to accommodate the needle of the blood gas needle. The inner diameter of the cylindrical part is 0.03mm-0.05mm. The axial length of the cylindrical part is not less than 0.3 cm. No silicone layer or rubber layer is attached to the lower end of the tapered portion.

Alternatively, the inner hole of the guide tube is a channel for passing the blood gas needle, and the channel includes a cylindrical upper part arranged in sequence from top to bottom, a tapered middle part with a wide upper part and a narrower lower part, and a cylindrical lower part. The tapered middle part is used to accommodate the pintle of the blood gas needle, the cylindrical lower part is used to accommodate the needle head of the blood gas needle, and the cylindrical upper part is used to accommodate the barrel of the blood gas needle. The structure of the channel in this patent is convenient to guarantee the effect of guiding and supporting the syringe. The needle head is guided vertically into the skin through the cylindrical lower part, and the needle plug is fixed through the setting of the tapered middle part, which further stabilizes the movement of the needle head vertically to the skin and increases the stability of the needle insertion angle. The inner diameter of the cylindrical upper part is 1-1.5 cm. The axial length of the cylindrical upper part is 1cm-2cm. The inner diameter of the cylindrical lower part is 0.03mm-0.05mm. The axial length of the cylindrical lower part is not less than 0.3 cm. The cone angle in the middle of the cone is 3-4°.

Or, referring to Fig. 4 and Fig. 5, the inner wall of the guide tube is fixed with a silica gel layer, and the inner wall of the guide tube after the silica gel layer is fixed is a channel 23 for passing through the blood gas needle, and the channel 23 includes cylinders arranged in sequence from top to bottom Shaped upper part, tapered middle part wide at the top and narrow at the bottom, and cylindrical lower part. The tapered middle part is used to accommodate the pintle 81 of the blood gas needle 8 , the cylindrical lower part is used to accommodate the needle head of the blood gas needle, and the cylindrical upper part is used to accommodate the barrel of the blood gas needle. The structure of the channel in this patent is convenient to guarantee the effect of guiding and supporting the syringe. The vertical incidence of the needle can be guided through the cylindrical lower part, and the needle plug can be fixed through the setting of the tapered middle part, which further stabilizes the movement of the needle perpendicular to the skin and increases the stability of the needle insertion angle. The inner diameter of the cylindrical upper part is 1-1.5 cm. The axial length of the cylindrical upper part is 1cm-2cm. The inner diameter of the cylindrical lower part is 0.03mm-0.05mm. The axial length of the cylindrical lower part is not less than 0.3 cm. The cone angle in the middle of the cone is 3-4°. The inner wall of the silicone layer constitutes the conical middle. The guide tube includes a cylindrical upper part and a lower part arranged up and down, and a silicone layer is adhered to the bottom of the upper part.

Or, on the basis of the above guide tube structure, referring to Fig. 6, the bottom of the guide tube includes a positioning part and a deformation part arranged up and down, and the deformation part is a bellows part 25 that can deform longitudinally; the inner diameter of the positioning part is larger than the blood gas needle needle , and the difference is not greater than 2mm; the inner diameter at the minimum inner diameter of the deformation part is not less than the inner diameter of the positioning part. The axial length of the deformation part is 1mm-2mm. It is convenient to set the bellows part, and it is convenient to realize adaptive deformation according to the degree of pulsation. Compared with hard plastic directly abutting against the pulsation, it is easier to change the liquid level of the hollow tube caused by the force generated by the pulsation. It is also possible that the bottom of the guide tube is lower than the bottom of the side plate, and the height difference is 1.5mm-2.5mm. Facilitate arterial pulses to drive fluid fluctuations.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention, and these improvements and modifications should also be considered Be 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 location 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-2.5mm;

the inner diameter of the hollow pipe is 0.8mm-1.3mm.

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 location device of claim 1, wherein: the length of the film is 2cm-3cm.

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 2mm;

the inner diameter of the minimum inner diameter position of the deformation part is not smaller than the inner diameter of the positioning part.

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