Invasive arterial blood collection device

Abstract

The utility model provides an invasive arterial blood collecting device which comprises a three-way valve, an arterial indwelling needle connecting pipe, an injector and a flushing pipeline, and the arterial indwelling needle connecting pipe, the injector and the flushing pipeline are detachably connected with the first end, the second end and the third end of the three-way valve respectively and correspondingly. The arterial indwelling needle connecting pipe, the injector and the flushing pipeline are connected through the arrangement of the three-way valve, so that the steps of flushing the pipeline, extracting flushing fluid and blood and collecting arterial blood are continuously achieved; wherein the arterial indwelling needle connecting pipe is provided with the blood sampling connector, medical staff can draw blood into the arterial indwelling needle connecting pipe through the blood sampling connector, and secondary wounds caused by arterial blood sampling are avoided; the needle opening of the injector is connected with the second end of the three-way valve, medical staff can store flushing fluid extracted by the injector and part of blood into the needle cylinder, the risk of infection is reduced, the blood of a patient can be injected back into the body after blood sampling is completed, and blood waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to an invasive arterial blood collection device. Background Art

[0002] Arterial blood is collected primarily for blood gas analysis, which can accurately reflect arterial oxygenation and acid-base balance. It is an important diagnostic indicator used in patients with lung or heart disease, in emergency treatment of critically ill patients, or for monitoring during surgery.

[0003] Currently, there are two common methods for collecting arterial blood gas (ABG) for clinical analysis: arterial puncture and arterial catheterization. Arterial puncture is a commonly used method for collecting arterial blood gas (ABG) for patients who require temporary ABG analysis. Arterial puncture is generally used for patients with more severe conditions who require close monitoring of vital signs and regular oxygen partial pressure testing, thus requiring frequent and long-term collection.

[0004] Therefore, how to provide an invasive arterial blood collection device suitable for patients who need long-term arterial blood collection to improve blood collection efficiency, reduce blood waste and the risk of blood flow-related infection is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an invasive arterial blood collection device to at least solve one of the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides an invasive arterial blood collection device, which includes: a three-way valve, which includes a first end, a second end and a third end; an arterial indwelling needle connecting tube, which is detachably connected to the first end; a blood collection interface is provided on the arterial indwelling needle connecting tube; a syringe, which includes a syringe and a piston rod, one end of the piston rod is slidably connected in the syringe, and the other end of the piston rod is provided with a piston handle; one end of the syringe is provided with a needle port, which is detachably connected to the second end, and a push plate is provided around the other end of the syringe; and a flushing pipeline, which is detachably connected to the third end.

[0007] Optionally, the invasive arterial blood collection device further includes an extension hose, one end of the extension hose is detachably connected to the second end, and the other end of the extension hose is detachably connected to the needle port.

[0008] Optionally, the syringe further comprises a sealing cover, one end of which is circumferentially connected to the side of the push plate, and the other end of which is circumferentially connected to the side of the piston handle, so that the sealing cover is sealed on the outside of the piston rod.

[0009] Optionally, the blood collection interface includes: an outer cover, a through hole is opened through the top of the outer cover, and the outer cover is a semi-enclosed structure; a first barrier member, the first barrier member is arranged in the outer cover, the side of the first barrier member is fixedly connected to the outer cover, and a first through line is opened in the middle of the first barrier member to connect the upper and lower parts of the first barrier member; a second barrier member, the second barrier member is integrally formed with the tube wall of the arterial catheter connecting tube; the bottom of the outer cover is fixedly connected to the top of the second barrier member, and the bottom of the first barrier member abuts against the top of the second barrier member; the middle part of the second barrier member is recessed to form a blocking area, and a second through line is opened at the bottom of the blocking area to connect the blocking area with the interior of the arterial catheter connecting tube.

[0010] Optionally, both ends of the extension hose are connected to sealing sleeves, and the second end and the needle port are detachably connected to the extension hose through the sealing sleeves.

[0011] Optionally, the sealing sleeve includes three sealing anti-slip rings, which are arranged on the inner wall of the sealing sleeve at intervals.

[0012] Optionally, the three-way valve is provided with an on-off knob, and the on-off knob is used to adjust the opening and closing of the first end, the second end and the third end.

[0013] Optionally, the inner wall of the syringe is provided with an anticoagulant coating.

[0014] Optionally, the outer cover is provided with an identification color.

[0015] Optionally, the syringe is a syringe with a capacity of 10 ml; the first barrier member, the first barrier member and the sealing anti-slip ring are made of silicone material.

[0016] Beneficial effects:

[0017] The utility model provides an invasive arterial blood collection device, comprising a three-way valve, an arterial indwelling needle connecting tube, a syringe and a flushing pipeline, wherein the arterial indwelling needle connecting tube, the syringe and the flushing pipeline are detachably connected to the first end, the second end and the third end of the three-way valve respectively. Since the commonly used method for collecting arterial blood gas during the use of an arterial indwelling needle in clinical practice first requires using a syringe to extract flushing fluid and part of the blood from the front section of the arterial indwelling needle connecting tube, and then using an arterial blood collector to collect the patient's arterial blood sample for blood gas analysis, the arterial indwelling needle connecting tube, the syringe and the flushing pipeline are connected by the setting of the three-way valve to continuously realize the steps of pipeline flushing, extracting flushing fluid and blood, and collecting arterial blood; wherein, a blood sampling interface is provided on the arterial indwelling needle connecting tube, and medical personnel can use the blood sampling interface to extract blood from the inside of the arterial indwelling needle connecting tube, avoiding the occurrence of blood sampling for collecting arterial blood. secondary wounds; in addition, since patients need long-term arterial blood sampling, patients may waste 30-50 ml of arterial blood a day due to the collection of arterial blood gas specimens. Therefore, the flushing fluid and part of the blood need to be injected back into the patient's body to avoid blood waste. The present application connects the needle port of the syringe to the second end of the three-way valve, so that medical staff can retain the flushing fluid and part of the blood drawn out by the syringe in the syringe, reducing the risk of infection. After the blood collection is completed, the patient's blood can be injected back into the body. During the whole process, there is no need to move the blood elsewhere for temporary storage, thus avoiding blood waste; in this way, an invasive arterial blood collection device suitable for patients who need long-term arterial blood collection is constructed, which ensures the closure of the entire pathway while ensuring the need for arterial blood collection during the arterial indwelling needle, avoiding catheter-related bloodstream infection and waste of patient blood, reducing the chance of blood splashing, and improving blood collection efficiency.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the overall structure of an invasive arterial blood collection device provided in an embodiment of the present application;

[0021] Figure 2A schematic diagram of the overall structure of an invasive arterial blood collection device provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of the blood sampling interface provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the blood sampling interface provided in an embodiment of the present application;

[0024] Figure 5 A schematic structural diagram of a sealing sleeve provided in an embodiment of the present application;

[0025] Reference numerals:

[0026] 1—three-way valve;

[0027] 11—first end;

[0028] 12—second end;

[0029] 13—third end;

[0030] 14—On / off knob;

[0031] 2—arterial indwelling needle connecting tube;

[0032] 21—blood collection interface;

[0033] 211—outer cover;

[0034] 212 - first barrier;

[0035] 213—second barrier;

[0036] 214—first penetration line;

[0037] 215—Second penetration line;

[0038] 216—Isolated area;

[0039] 3—Syringe;

[0040] 31—syringe;

[0041] 32—piston rod;

[0042] 33—needle port;

[0043] 34—piston handle;

[0044] 35—Push plate;

[0045] 36—sealing cover;

[0046] 4—Flush the pipeline;

[0047] 5—Extension hose;

[0048] 51—sealing sleeve;

[0049] 511—Sealing anti-slip ring; DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] At the same time, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0052] See also Figure 1 The present embodiment provides an invasive arterial blood collection device, which includes a three-way valve 1, which includes a first end 11, a second end 12 and a third end 13; an arterial indwelling needle connecting tube 2, which is detachably connected to the first end 11; a blood sampling interface 21 is provided on the arterial indwelling needle connecting tube 2; a syringe 3, which includes a syringe barrel 31 and a piston rod 32, one end of the piston rod 32 is slidably connected in the syringe barrel 31, and the other end of the piston rod 32 is provided with a piston handle 34; a needle port 33 is provided at one end of the syringe barrel 31, which is detachably connected to the second end 12, and a push plate 35 is provided around the other end of the syringe barrel 31; and a flushing pipeline 4, which is detachably connected to the third end 13.

[0053] The arterial blood sampling device of the present invention comprises a three-way valve 1, an arterial indwelling needle connecting tube 2, a syringe 3 and a flushing pipeline 4. The arterial indwelling needle connecting tube 2, the syringe 3 and the flushing pipeline 4 are detachably connected to the first end 11, the second end 12 and the third end 13 of the three-way valve 1 respectively. Since the commonly used method for collecting arterial blood gas during the use of an arterial indwelling needle in clinical practice first requires using a syringe 3 to extract a flushing fluid and part of the blood from the front section of the arterial indwelling needle connecting tube 2, and then using an arterial blood collector to collect the patient's arterial blood sample for blood gas analysis, the arterial indwelling needle connecting tube 2, the syringe 3 and the flushing pipeline 4 are connected by the setting of the three-way valve 1 to realize the steps of pipeline flushing, extracting flushing fluid and blood, and collecting arterial blood in a continuous manner; wherein, a blood sampling interface 21 is provided on the arterial indwelling needle connecting tube 2, and medical personnel can use the blood sampling interface 21 to extract blood from the inside of the arterial indwelling needle connecting tube 2, thereby avoiding secondary wounds for collecting arterial blood; this In addition, since patients need to undergo arterial blood sampling for a long time, they may waste 30-50 ml of arterial blood a day due to the collection of arterial blood gas samples. Therefore, the flushing fluid and part of the blood need to be injected back into the patient's body to avoid blood waste. In this application, the needle port 33 of the syringe 3 is connected to the second end 12 of the three-way valve 1. Medical staff can temporarily store the flushing fluid and part of the blood drawn out by the syringe 3 in the syringe 31 to reduce the risk of infection. After the blood collection is completed, the patient's blood can be injected back into the body. During the whole process, there is no need to move the blood to another place for temporary storage, thereby avoiding blood waste. As a feasible way, the inner surface of the syringe 31 is coated with an anticoagulant coating to reduce the risk of thrombosis. In this way, an invasive arterial blood collection device suitable for patients who need to undergo arterial blood collection for a long time is constructed. While ensuring the need for arterial blood collection during the arterial indwelling needle period, the closure of the entire pathway is ensured, thereby avoiding catheter-related bloodstream infection and waste of patient blood, reducing the chance of blood splashing, and improving blood collection efficiency.

[0054] In some possible implementations, the invasive arterial blood collection device further includes an extension hose 5 , one end of the extension hose 5 is detachably connected to the second end 12 , and the other end of the extension hose 5 is detachably connected to the needle port 33 .

[0055] Specifically, if Figure 2 As shown, by extending the hose 5, the flushing fluid and part of the blood drawn out by the syringe 3 can be placed flat on the patient's bed or table to keep the syringe 3 stable and facilitate clinical placement and use; the length of the extended hose 5 is sufficient to place the syringe 3 flat.

[0056] In some possible embodiments, the syringe 3 further includes a sealing cover 36, one end of which is circumferentially connected to the side of the push plate 35, and the other end of the sealing cover 36 is circumferentially connected to the side of the piston handle 34, so that the sealing cover 36 is sealingly sleeved on the outside of the piston rod 32.

[0057] Specifically, by providing a sealing cover 36 between the piston handle 34 and the push plate 35 of the syringe 3, the piston rod 32 is ensured to be in a sealed and sterile environment, thereby preventing contamination during the process of blood extraction and reinjection.

[0058] In some possible embodiments, the blood collection interface 21 includes: an outer cover 211, a through hole is opened through the top of the outer cover 211, and the outer cover 211 is a semi-enclosed structure; a first barrier 212, the first barrier 212 is arranged in the outer cover 211, the side of the first barrier 212 is fixedly connected to the outer cover 211, and a first through line 214 is opened in the middle of the first barrier 212 to connect the upper and lower parts of the first barrier 212; a second barrier 213, the second barrier 213 is integrally formed with the tube wall of the arterial indwelling needle connecting tube 2; the bottom of the outer cover 211 is fixedly connected to the top of the second barrier 213, and the bottom of the first barrier 212 is abutted against the top of the second barrier 213; the middle part of the second barrier 213 is concave to form a blocking area 216, and a second through line 215 is opened at the bottom of the blocking area 216 to connect the blocking area 216 with the interior of the arterial indwelling needle connecting tube 2.

[0059] Specifically, if Figure 3-4 As shown, by setting the blood sampling interface 21, needle-free arterial blood collection is achieved on the arterial indwelling needle connecting tube 2, so that multiple arterial blood samplings are performed non-invasively, thereby improving the blood sampling efficiency; by the double barrier setting of the first barrier 212 and the second barrier 213, the pressure of the arterial blood in the arterial indwelling needle connecting tube 2 cannot break through the double barrier, and the arterial blood can be normally located in the arterial indwelling needle connecting tube 2 waiting for sampling, and the medical staff can insert the needle to administer medicine or draw blood.

[0060] In some possible implementations, both ends of the extension hose 5 are connected to a sealing sleeve 51 , and the second end 12 and the needle port 33 are detachably connected to the extension hose 5 through the sealing sleeve 51 .

[0061] Specifically, by providing the sealing sleeve 51 , a sterile sealed environment is provided for drawing out and injecting back blood by the syringe 3 , thereby reducing blood contamination.

[0062] In some possible implementations, the sealing sleeve 51 includes three sealing anti-slip rings 511 , which are arranged on the inner wall of the sealing sleeve 51 at intervals.

[0063] Specifically, if Figure 5As shown, by providing multiple sealing anti-slip rings 511, multiple sealing effects are achieved and the sealing efficiency is improved.

[0064] In some possible implementations, an on-off knob 14 is provided on the three-way valve 1 , and the on-off knob 14 is used to adjust the opening and closing of the first end 11 , the second end 12 , and the third end 13 .

[0065] In some possible implementations, the inner wall of the syringe 3 is provided with an anticoagulant coating.

[0066] Specifically, the fluid friction formed by blood flow on the surface of the implanted implant can trigger an abnormal coagulation mechanism, thereby forming a blood clot. And since patients have blood drawn many times a day, the setting of an anticoagulant coating can better ensure the safety of blood drawn from patients.

[0067] In some possible implementations, the outer cover 211 is provided with an identification color.

[0068] Specifically, by setting the identification color, medical staff can clearly identify the position of the blood collection interface 21 and use it.

[0069] In some possible implementations, the syringe 3 has a capacity of 10 ml; the first barrier 212, the second barrier 213, and the sealing anti-slip ring 511 are made of silicone material.

[0070] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, intended to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can, within the technical scope disclosed by the present invention, modify or easily conceive of variations to the technical solutions described in the above embodiments, or substitute equivalent features for some of the technical features thereof. Such modifications, variations, or substitutions do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present invention. They should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

[0071] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An invasive arterial blood collection device, characterized in that: The invasive arterial blood collection device comprises: A three-way valve (1), the three-way valve (1) comprising a first end (11), a second end (12) and a third end (13); An arterial indwelling needle connecting tube (2), the arterial indwelling needle connecting tube (2) being detachably connected to the first end (11); a blood sampling interface (21) being provided on the arterial indwelling needle connecting tube (2); A syringe (3), comprising a syringe (31) and a piston rod (32), one end of the piston rod (32) being slidably connected in the syringe (31), and the other end of the piston rod (32) being provided with a piston handle (34); one end of the syringe (31) being provided with a needle port (33), the needle port (33) being detachably connected to the second end (12), and the other end of the syringe (31) being surrounded by a push plate (35); and a flushing pipeline (4), wherein the flushing pipeline (4) is detachably connected to the third end (13).

2. The invasive arterial blood collection device according to claim 1, characterized in that: The invasive arterial blood collection device further comprises an extension hose (5), one end of the extension hose (5) is detachably connected to the second end (12), and the other end of the extension hose (5) is detachably connected to the needle port (33).

3. The invasive arterial blood collection device according to claim 2, characterized in that: The syringe (3) further comprises a sealing cover (36), one end of which is connected to the side of the push plate (35) in a surrounding manner, and the other end of which is connected to the side of the piston handle (34) in a surrounding manner, so that the sealing cover (36) is sealingly sleeved on the outside of the piston rod (32).

4. The invasive arterial blood collection device according to claim 3, characterized in that: The blood sampling interface (21) comprises: An outer cover (211), wherein a through hole is formed through the top of the outer cover (211), and the outer cover (211) is in a semi-enclosed structure; a first barrier (212), the first barrier (212) being disposed in the outer cover (211), the side surface of the first barrier (212) being fixedly connected to the outer cover (211), and a first through line (214) being provided in the middle of the first barrier (212) so as to allow the upper and lower parts of the first barrier (212) to communicate with each other; A second barrier (213) is formed integrally with the wall of the arterial indwelling needle connecting tube (2); the bottom of the outer cover (211) is fixedly connected to the top of the second barrier (213), and the bottom of the first barrier (212) is in contact with the top of the second barrier (213); the middle of the second barrier (213) is concave to form a barrier area (216), and a second through line (215) is provided at the bottom of the barrier area (216) to enable the barrier area (216) to communicate with the interior of the arterial indwelling needle connecting tube (2).

5. The invasive arterial blood collection device according to claim 4, characterized in that: The other end of the extension hose (5) is provided with a sealing sleeve (51), and the needle port (33) is detachably connected to the other end of the extension hose (5) through the sealing sleeve (51).

6. The invasive arterial blood collection device according to claim 5, characterized in that: The sealing sleeve (51) comprises three sealing anti-slip rings (511), and the three sealing anti-slip rings (511) are arranged on the inner wall of the sealing sleeve (51) at intervals.

7. The invasive arterial blood collection device according to claim 6, characterized in that: The three-way valve (1) is provided with an on-off knob (14), and the on-off knob (14) is used to adjust the opening and closing of the first end (11), the second end (12) and the third end (13).

8. The invasive arterial blood collection device according to claim 7, characterized in that: The inner wall of the syringe (3) is provided with an anticoagulant coating.

9. The invasive arterial blood collection device according to claim 8, characterized in that: The outer cover (211) is provided with an identification color.

10. The invasive arterial blood collection device according to claim 9, characterized in that: The syringe (3) is a syringe (3) with a capacity of 10 ml; the first barrier (212), the second barrier (213) and the sealing anti-slip ring (511) are made of silicone material.

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