CN112716492A

CN112716492A - Trace arterial blood gas hemostix

Info

Publication number: CN112716492A
Application number: CN202110034141.5A
Authority: CN
Inventors: 李明; 何明逊; 程盼伟
Original assignee: Us Europe Micro Medical Wuhan Co ltd
Current assignee: Us Europe Micro Medical Wuhan Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-04-30

Abstract

The invention discloses a trace arterial blood gas hemostix, relating to the technical field of medical instruments and comprising: the shell comprises a front shell and a rear shell which are coaxially arranged, one end of the front shell, which is close to the rear shell, is sleeved in the rear shell, an annular air gap for gas to pass through is formed between the front shell and the rear shell, and one end of the rear shell, which is far away from the front shell, is provided with an opening; the luer connector is arranged at one end of the front shell far away from the rear shell; the three-way pipe is arranged in the rear shell, and the first end of the three-way pipe is communicated with the opening; the opening plugging piece is used for opening and closing and is arranged at one end of the rear shell, which is far away from the front shell; one end of the straight single-tube capillary tube is arranged in the rear shell and communicated with the second end of the three-way tube, and the other end of the straight single-tube capillary tube penetrates through the luer connector to extend out; and the water-meeting closed filter element is arranged in the rear shell and is used for opening and closing the third end of the three-way pipe. This hemostix can realize less blood sampling volume to realize the collection of peripheral blood, satisfy the comparatively difficult patient's requirement of taking a blood sample.

Description

Trace arterial blood gas hemostix

Technical Field

The invention relates to the technical field of medical instruments, in particular to a trace arterial blood gas hemostix.

Background

The blood gas acid-base analysis is used for detecting the gas in the blood, and is an important index for reflecting the physiological function of respiration, and at present, part of the blood gas is detected by combining electrolytes (Na, K, Cl and Ca) with part of biochemical and blood oxygen item detection. The collection of radial, brachial and femoral arteries is the main reason for blood-qi samples, because only arterial blood can correctly reflect the physiological function of respiration.

The blood gas sampler can be used for collecting blood gas samples, the blood gas sampling amount is less than that of a blood gas needle of a traditional injector structure, the needle head is thinner, the wound is small, the blood return is fast, the heparin is anticoagulated stably, the blood is collected quantitatively, the blood sampling amount is matched with the heparin amount, the test result is not influenced, the uniform mixing is not needed to be kneaded after the blood is collected, and the collection of arterial blood is simpler, more accurate and more convenient. However, the existing trace blood gas hemostix still has high blood collection amount (more than 260 uL). The blood gas hemostix is suitable for adult blood collection, but is often difficult for patients who have difficulty in blood collection, such as newborn (low blood volume and viscous blood), severe patients (low blood pressure and poor blood return) and the like.

Therefore, how to overcome the above-mentioned drawbacks is a problem to be solved by those skilled in the art.

Disclosure of Invention

In order to solve the technical problems, the invention provides a trace arterial blood gas hemostix, which aims to realize smaller blood collection amount, realize peripheral blood collection and meet the requirements of patients who have difficulty in blood collection such as newborn blood collection and severe patients (low blood pressure and poor blood return).

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a trace arterial blood gas hemostix, comprising: the gas-liquid separation device comprises a shell, a gas-liquid separation device and a gas-liquid separation device, wherein the shell comprises a front shell and a rear shell which are coaxial and sequentially arranged along the axis direction, one end of the front shell, which is close to the rear shell, is sleeved in the rear shell, an annular air gap for gas to pass through is formed between the front shell and the rear shell, and one end of the rear shell, which is far away from the front shell, is provided with an opening; the luer connector is arranged at one end of the front shell, which is far away from the rear shell, and is communicated with the inside of the front shell; the three-way pipe is arranged in the rear shell, and a first end of the three-way pipe is communicated with the opening; the plugging piece is arranged at one end, far away from the front shell, of the rear shell and is used for opening and closing the opening; one end of the straight single-tube capillary is arranged in the rear shell and communicated with the second end of the three-way tube, and the other end of the straight single-tube capillary penetrates through the luer connector to extend out; meet water and seal the filter core, meet water and seal the filter core set up in inside the backshell, just meet water and seal the filter core set up in the third end of three-way pipe, during the first state, meet water and seal the filter core and open the third end of three-way pipe, gas can pass meet water and seal the filter core and get into the three-way pipe, during the second state, meet water and seal the filter core and meet blood and seal the third end of three-way pipe, gas can't pass meet water and seal the filter core and get into the three-way pipe.

Preferably, the trace arterial blood gas hemostix further comprises an anti-slip structure, wherein the anti-slip structure is arranged on the outer side wall of the front shell.

Preferably, the anti-slip structure includes a plurality of serrations each disposed on an outer sidewall of the front case.

Preferably, the three-way pipe comprises a silicone tube, a first branch pipe and a second branch pipe, one end of the silicone tube is communicated with one end of the first branch pipe and one end of the second branch pipe, the other end of the silicone tube is sleeved outside the straight single-tube capillary tube, the diameter of the silicone tube is equal to that of the straight single-tube capillary tube, the other end of the first branch pipe is communicated with the opening, and the other end of the second branch pipe is provided with the water-meeting sealing filter element.

Preferably, the micro arterial blood gas hemostix further comprises an adapter, wherein the adapter comprises a first connector matched with a blood sampling piece to be adapted and a second connector matched with the luer connector, and the first connector is communicated with the second connector.

Preferably, treat that adaptation blood sampling piece is disposable blood sampling needle, the adapter still includes the reducing section, the first joint passes through the reducing section with the second connects and is linked together, the size of reducing section is greater than the size of the pjncture needle of disposable blood sampling needle, be less than and be used for the protection the size of the gum cover of pjncture needle, the first joint cover is located on the needle file of pjncture needle, the pjncture needle passes in proper order the first joint with the reducing section stretches into the second connects, the second connects the cover to be located luer connects is last.

Preferably, the blood sampling part to be adapted is a needle-free closed infusion connector, the first connector is embedded in the needle-free closed infusion connector and communicated with the needle-free closed infusion connector, and the second connector is sleeved on the luer connector.

Preferably, the first joint and the second joint are made of silica gel materials.

Preferably, the micro arterial blood gas hemostix further comprises a protective cap for protecting the straight single-tube capillary, the protective cap is sleeved on the luer connector, and one end of the straight single-tube capillary extending out of the luer connector is arranged inside the protective cap.

Compared with the prior art, the invention has the following technical effects:

1. the micro arterial blood gas hemostix provided by the invention adopts a straight single-tube capillary under the condition that the total length of the shell is not changed, the length of the straight single-tube capillary is not more than the total length of the shell, and then the micro arterial blood gas hemostix realizes blood sampling with smaller blood sampling amount.

2. According to the micro arterial blood gas hemostix, the straight single-tube capillary extends out of the luer connector of the hemostix, and peripheral blood collection can be realized by utilizing the siphon principle, and is suitable for blood collection of patients with difficulty in blood collection, such as neonates (small blood volume, viscous blood), severe patients (low blood pressure, poor blood return) and the like.

3. The capillary tube of the existing trace arterial blood gas hemostix is embedded in the shell, the capillary tube cannot be directly connected with a blood gas analyzer for sample injection, and the sample injection mode is single after the blood sampling is finished.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a micro arterial blood gas sampler provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of an adapter provided in the embodiment of the present invention.

Description of reference numerals: 100. a trace arterial blood gas hemostix; 1. a front housing; 2. a rear housing; 3. an opening; 4. A luer fitting; 5. a plugging block; 6. a straight single-tube capillary; 7. the filter element is sealed in water; 8. a protective cap; 9. an anti-slip structure; 10. a silicone tube; 11. a first branch pipe; 12. a second branch pipe; 13. a first joint; 14. a second joint; 15. a reducing section; 16. disposable venous blood collection needles; 17. puncturing needle; 18. A flexible band; 19. a rubber sleeve; 20. a needle seat; 21. a needle-free closed transfusion joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a trace arterial blood gas hemostix which can realize smaller blood collection amount, realize peripheral blood collection and meet the requirements of patients who have difficulty in blood collection such as newborn blood collection and severe patients (low blood pressure, poor blood return) and the like.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the present embodiment provides a micro arterial blood gas sampling device 100, including: the gas-liquid separation device comprises a shell, wherein the shell comprises a front shell 1 and a rear shell 2 which are coaxial and sequentially arranged along the axis direction, one end, close to the rear shell 2, of the front shell 1 is sleeved inside the rear shell 2, an annular air gap for gas to pass through is formed between the front shell 1 and the rear shell 2, and one end, far away from the front shell 1, of the rear shell 2 is provided with an opening 3; the luer connector 4 is arranged at one end of the front shell 1 far away from the rear shell 2, and the luer connector 4 is communicated with the inside of the front shell 1; the three-way pipe is arranged in the rear shell 2, and the first end of the three-way pipe is communicated with the opening 3; the plugging piece is arranged at one end of the rear shell 2, which is far away from the front shell 1, and is used for opening and closing the opening 3; one end of the straight single-tube capillary 6 is arranged in the rear shell 2 and communicated with the second end of the three-way pipe, and the other end of the straight single-tube capillary 6 extends out through the luer 4; meet water and seal filter core 7, meet water and seal filter core 7 and set up inside rear shell 2, and meet water and seal filter core 7 and set up in the third end of three-way pipe, during the first state, meet water and seal filter core 7 and open the third end of three-way pipe, gas can pass and meet water and seal filter core 7 and get into the three-way pipe, and during the second state, meet water and seal filter core 7 and meet the third end of blood and seal the three-way pipe, and gas can't pass and meet water and seal filter core 7 and get into the three. The trace arterial blood gas hemostix 100 realizes smaller blood collection amount, realizes the collection of peripheral blood, and meets the requirements of patients who have difficulty in blood collection such as newborn blood collection and severe patients (low blood pressure, poor blood return).

In this embodiment, as shown in fig. 1, in order to facilitate and stabilize the holding during blood collection, the micro arterial blood gas blood collector 100 further includes an anti-slip structure 9, and the anti-slip structure 9 is disposed on the outer sidewall of the front housing 1.

Further, the anti-slip structure 9 includes a plurality of saw-tooth protrusions, each of which is disposed on the outer sidewall of the front case 1.

In this embodiment, specifically, as shown in fig. 1, the three-way pipe includes a silicone tube 10, a first branch tube 11 and a second branch tube 12, one end of the silicone tube 10, the first branch tube 11 and the second branch tube 12 are communicated, the other end of the silicone tube 10 is sleeved outside the straight single-tube capillary tube 6, the diameter of the silicone tube 10 is equal to the diameter of the straight single-tube capillary tube 6, the other end of the first branch tube 11 is communicated with the opening 3, and the other end of the second branch tube 12 is provided with a water-sealing filter element 7. The materials of the first branch pipe 11 and the second branch pipe 12 are not limited, and the first branch pipe 11 and the second branch pipe 12 can also be made of silica gel.

In this embodiment, the straight single-tube capillary 6 is hermetically connected to the luer 4 to prevent the blood sample from entering the housing during the blood sampling process. The details of how to seal are well known in the art and will not be described herein.

In the present embodiment, as shown in fig. 1, the blocking piece and the rear housing 2 are integrally provided to prevent the blocking piece from falling off, and the detailed structure of the blocking piece is also the prior art as long as the blocking piece can block the opening 3, for example, the blocking piece includes a flexible belt 18 and a blocking block 5, the shape of the blocking block 5 is consistent with the shape of the opening 3, and the blocking block 5 is connected with the rear housing 2 through the flexible belt 18. In the specific use process, during blood collection, the opening 3 is plugged by the plugging piece, the straight single-tube capillary tube 6-silicone tube 10-second branch tube 12-water-meeting water-sealed filter element 7-annular air gap-outside atmosphere form a communication passage, when blood reaches the water-meeting water-sealed filter element 7, the second branch tube 12 is plugged by the water-meeting water-sealed filter element 7, blood collection is automatically stopped, when the collected blood needs to be taken out from the straight single-tube capillary tube 6, the opening 3 is opened by the plugging piece, and the straight single-tube capillary tube 6-silicone tube 10-first branch tube 11-outside atmosphere form a communication passage.

In this embodiment, as shown in fig. 2, the arteriovenous blood sampler 100 further includes an adapter, the adapter includes a first connector 13 matched with a blood sampling member to be adapted and a second connector 14 matched with the luer connector 4, and the first connector 13 is communicated with the second connector 14. So set up, this trace artery blood gas hemostix 100 extensive applicability can the blood sampling piece of compatible different grade type, can satisfy the clinical demand under the different situation. It should be noted that the luer 4 of the micro arterial blood gas hemostix 100 can be directly mated with a common blood collection needle, and the two are not connected by an adapter.

In the present embodiment, specifically, as shown in fig. 2, when the blood collecting member to be adapted is a disposable intravenous blood collection needle 16, the adaptor further includes a reducing section 15, the first connector 13 is communicated with the second connector 14 through the reducing section 15, the size of the reducing section 15 is larger than the size of a puncture needle 17 of the disposable intravenous blood collection needle 16 and smaller than the size of a rubber sleeve 19 for protecting the puncture needle 17, the first connector 13 is sleeved on a needle seat 20 of the puncture needle 17, the puncture needle 17 sequentially passes through the first connector 13 and the reducing section 15 to extend into the second connector 14, and the second connector 14 is sleeved on the luer connector 4. In the specific use process, when the puncture needle 17 reaches the reducing section 15, the reducing section 15 prevents the rubber sleeve 19 from advancing because the size of the rubber sleeve 19 is larger than that of the reducing section 15, the puncture needle 17 is continuously pushed in, the puncture needle 17 punctures the rubber sleeve 19, and meanwhile, the rubber sleeve 19 is accumulated at one end of the reducing section 15, so that the sealing of a gap between the reducing section 15 and the puncture needle 17 is realized.

In the embodiment, specifically, as shown in fig. 2, when the blood sampling member to be adapted is a needle-free closed infusion connector 21, the first connector 13 is embedded inside the needle-free closed infusion connector 21 and is communicated with the needle-free closed infusion connector 21, and the second connector 14 is sleeved on the luer connector 4. The first connector 13 is specifically connected to the needle-free closed infusion connector 21, which belongs to the prior art and is not the key point of the present invention, and therefore, the detailed description thereof is omitted.

In this embodiment, the first joint 13 and the second joint 14 are made of a silicone material.

In this embodiment, there is a sealing hole at the joint of the water-sealed filter element 7 and the second branch pipe 12, and the diameter of the sealing hole is smaller than that of the second branch pipe 12, so that when blood reaches the tail end of the second branch pipe 12, the blood first passes through the sealing hole and then contacts with the water-sealed filter element 7 to stop bleeding and seal, rather than directly contacting with the water-sealed filter element 7 to seal.

In this embodiment, the micro arterial blood gas collecting device 100 further includes a protective cap 8 for protecting the straight single-tube capillary 6, the protective cap 8 is sleeved on the luer 4, and one end of the straight single-tube capillary 6 extending out of the luer 4 is disposed inside the protective cap 8. When blood sampling is carried out in the specific use process, the protective cap 8 is taken down, and when blood sampling is not needed, the protective cap 8 is sleeved on the luer connector 4.

In the description of the present invention, it should be noted that certain terms of orientation or positional relationship are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that "connected" is to be understood broadly, for example, it may be fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A trace amount of artery blood gas hemostix, characterized by comprising:

the gas-liquid separation device comprises a shell, a gas-liquid separation device and a gas-liquid separation device, wherein the shell comprises a front shell and a rear shell which are coaxial and sequentially arranged along the axis direction, one end of the front shell, which is close to the rear shell, is sleeved in the rear shell, an annular air gap for gas to pass through is formed between the front shell and the rear shell, and one end of the rear shell, which is far away from the front shell, is provided with an opening;

the luer connector is arranged at one end of the front shell, which is far away from the rear shell, and is communicated with the inside of the front shell;

the three-way pipe is arranged in the rear shell, and a first end of the three-way pipe is communicated with the opening;

the plugging piece is arranged at one end, far away from the front shell, of the rear shell and is used for opening and closing the opening;

one end of the straight single-tube capillary is arranged in the rear shell and communicated with the second end of the three-way tube, and the other end of the straight single-tube capillary penetrates through the luer connector to extend out;

meet water and seal the filter core, meet water and seal the filter core set up in inside the backshell, just meet water and seal the filter core set up in the third end of three-way pipe, during the first state, meet water and seal the filter core and open the third end of three-way pipe, gas can pass meet water and seal the filter core and get into the three-way pipe, during the second state, meet water and seal the filter core and meet blood and seal the third end of three-way pipe, gas can't pass meet water and seal the filter core and get into the three-way pipe.

2. The device according to claim 1, further comprising an anti-slip structure disposed on an outer sidewall of the front case.

3. A microarterial blood hemostix according to claim 2, wherein the anti-slip structure comprises a plurality of serrations each provided on an outer side wall of the front case.

4. The micro arterial blood gas collector according to claim 1, wherein the three-way tube comprises a silicone tube, a first branch tube and a second branch tube, one end of the silicone tube, one end of the first branch tube and one end of the second branch tube are communicated, the other end of the silicone tube is sleeved outside the straight single-tube capillary tube, the diameter of the silicone tube is equal to that of the straight single-tube capillary tube, the other end of the first branch tube is communicated with the opening, and the other end of the second branch tube is provided with the water-sealing filter element.

5. The arteriovenous hemostix of claim 1, further comprising an adapter including a first connector mated with a blood collection member to be adapted and a second connector mated with the luer connector, and wherein the first connector is in communication with the second connector.

6. A arteriovenous hemostix according to claim 5, wherein the blood sampling member to be adapted is a disposable venous blood sampling needle, the adapter further comprises a reducing section, the first joint is communicated with the second joint through the reducing section, the size of the reducing section is larger than that of a puncture needle of the disposable venous blood sampling needle, smaller than that of a rubber sleeve for protecting the puncture needle, the first joint is sleeved on a needle seat of the puncture needle, the puncture needle sequentially passes through the first joint and the reducing section to extend into the second joint, and the second joint is sleeved on the luer joint.

7. The arteriovenous hemostix of claim 5, wherein the blood sampling member to be adapted is a needle-free closed infusion connector, the first connector is embedded in the needle-free closed infusion connector and communicated with the needle-free closed infusion connector, and the second connector is sleeved on the luer connector.

8. The device for collecting blood from arteriolar blood gases of claim 5, wherein said first joint and said second joint are made of a silicone material.

9. The arteriovenous hemostix according to claim 1, further comprising a protective cap for protecting the straight single-tube capillary, wherein the protective cap is sleeved on the luer connector, and one end of the straight single-tube capillary extending out of the luer connector is disposed inside the protective cap.