CN222237673U - Blood sampling device special for central venous catheter - Google Patents
Blood sampling device special for central venous catheter Download PDFInfo
- Publication number
- CN222237673U CN222237673U CN202323184917.5U CN202323184917U CN222237673U CN 222237673 U CN222237673 U CN 222237673U CN 202323184917 U CN202323184917 U CN 202323184917U CN 222237673 U CN222237673 U CN 222237673U
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- blood
- catheter
- hemostix
- connector
- needle
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- 238000010241 blood sampling Methods 0.000 title claims abstract description 29
- 210000004369 blood Anatomy 0.000 claims abstract description 128
- 239000008280 blood Substances 0.000 claims abstract description 128
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 238000001802 infusion Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 abstract description 12
- 210000004204 blood vessel Anatomy 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 238000005070 sampling Methods 0.000 abstract description 2
- 210000003462 vein Anatomy 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010033372 Pain and discomfort Diseases 0.000 description 1
- 238000004159 blood analysis Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to the technical field of venous blood sampling medical equipment, and provides a special blood sampling device for a central venous catheter, a catheter connector, a hemostix and an auxiliary hemostix, wherein the catheter connector is used for connecting the central venous catheter, the hemostix and the auxiliary hemostix are respectively connected with the catheter connector, the hemostix is used for sampling blood, and the auxiliary hemostix is used for removing waste blood and a flushing pipe. The utility model is connected with the central venous catheter by arranging the catheter connector, does not need to search and puncture the venous blood vessel again to collect blood, is provided with the auxiliary hemostix and the hemostix, can firstly extract the blood volume which needs to be discarded by the auxiliary hemostix, then uses the hemostix to collect blood of a patient, finally uses the 20 ml NS flushing tube by the auxiliary hemostix, does not need to frequently replace the injector in the blood collection process, reduces the risk of CABSI, and reduces the risk of needle puncture by connecting the hemostix with the vacuum collection tube.
Description
Technical Field
The application relates to the technical field of venous blood sampling medical equipment, in particular to a blood sampling device special for a central venous catheter.
Background
Central venous catheters include PICCs, CVCs, ports of infusion, which are an important route for infusion, pharmaceutical or nutritional support. The central venous catheter can be inserted into large blood vessels, such as vena cava, and compared with peripheral veins, the large blood vessels are more stable, can provide more reliable vascular access, are suitable for long-term transfusion, drug transfusion and convenient and frequent blood sampling, and reduce pain and discomfort caused by repeated puncture of the peripheral veins for patients needing frequent blood examination.
The existing venous hemostix is mainly aimed at collecting peripheral venous blood vessels, when blood is collected through an indwelling central venous catheter, a syringe is usually used for extracting blood volume to be discarded, a new syringe is used for extracting blood and injecting the blood in the syringe into a test tube for inspection, a 20 ml NS flushing tube is needed after collection is completed, the syringe is needed to be frequently plugged and pulled in the blood collection process, the operation is troublesome, the blood collection efficiency is low, and a patient or medical staff is very easy to be stabbed.
Disclosure of utility model
In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide a blood sampling device dedicated for a central venous catheter, which aims to solve the problems that the existing venous blood sampling device is not suitable for a central venous catheter and the existing central venous catheter blood sampling method is low in efficiency.
The application solves the technical problems by adopting the following technical proposal that the special blood sampling device for the central venous catheter comprises a catheter connector, a central venous catheter and a central venous catheter, wherein the catheter connector is used for connecting the central venous catheter;
The hemostix is connected with the catheter connector and is used for taking blood;
The auxiliary hemostix is connected with the catheter connector and is used for removing waste blood and the wash pipe.
Further, the hemostix comprises a blood taking needle which is used for being connected with a vacuum blood taking tube.
Further, the auxiliary hemostix comprises a syringe connector for connecting with a syringe.
Further, the injector connector is an atraumatic needle connector,
The auxiliary hemostix also comprises a catheter flusher, and the catheter flusher is detachably connected with the atraumatic needle joint.
Further, the special blood sampling device for the central venous catheter further comprises a sealer, wherein the sealer is used for separating the blood sampling needle from the catheter connector when the vacuum blood sampling tube is separated from the blood sampling needle.
Further, the blood taking needle is connected with the catheter connector through a transfusion tube,
The sealer comprises an infusion tube clamp, wherein the infusion tube clamp is arranged on the infusion tube and is used for controlling the on-off of the infusion tube.
Further, the sealer further comprises a inching valve through which the lancet is connected with the catheter connector;
And a driving part for closing the inching valve when the vacuum blood collection tube is separated from the blood collection needle.
Further, the inching valve comprises a chamber, wherein the catheter connector and the blood taking needle are oppositely arranged on the chamber, and the catheter connector is connected with the chamber;
A movable part, one end of the movable part is connected with the blood taking needle, the other end of the movable part penetrates through the cavity and is arranged in the cavity towards the catheter connector in a sliding way, the movable part is provided with a valve opening position and a valve closing position, and the valve opening position is positioned between the valve closing position and the blood taking needle;
An opening portion provided on the movable portion, the opening being connected to the lancet;
and the piston part is arranged in the cavity and is used for closing the opening part when the movable part is positioned at the valve closing position.
Further, the driving part comprises a spring connected between the movable part and the conduit connector, and the spring is used for driving the movable part to move to the valve closing position.
Further, the auxiliary hemostix further comprises a self-sealing device, wherein the self-sealing device is used for separating the syringe connector from the catheter connector when the syringe is separated from the syringe connector, and the self-sealing device and the sealing device have the same structure.
Compared with the prior art, the utility model is connected with the central venous catheter by arranging the catheter connector, does not need to search and puncture the venous blood vessel again to collect blood, is provided with the auxiliary hemostix and the hemostix, can firstly extract the blood volume which needs to be discarded by the auxiliary hemostix, then uses the hemostix to collect blood of a patient, finally uses the 20 ml NS flushing pipe by the auxiliary hemostix, does not need to frequently replace the injector to reduce CABSI risks in the blood collection process, and reduces the risk of needle puncture due to the connection of the hemostix with the vacuum collection pipe.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing the overall structure of a blood sampling device for central venous catheter according to the present embodiment;
FIG. 2 is a schematic partial cross-sectional view of FIG. 1 of the present embodiment;
fig. 3 is a partially enlarged structural schematic diagram at a of fig. 2 of the present embodiment;
Fig. 4 is a partially enlarged structural schematic diagram at B of fig. 2 of the present embodiment.
In the figure, 101, a catheter connector, 201, a blood taking needle, 202, a vacuum blood taking tube, 300, an auxiliary blood taking device, 301, a syringe connector, 302, a catheter flusher, 400, a sealer, 401, an infusion tube clamp, 402, a click valve, 402a, a movable part, 402b, an opening part, 402c, a piston part, 403, a spring, 501 and a self-sealing device are shown.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features described above in the different embodiments of the present utility model may be combined with each other as long as they do not collide with each other.
The utility model provides a special blood sampling device for a central venous catheter, as shown in fig. 1 to 4, and aims to solve the problems that the existing venous blood sampling device is not suitable for the central venous catheter and the existing central venous catheter blood sampling method is low in efficiency.
The special blood sampling device for the central venous catheter mainly comprises a catheter connector 101, a hemostix and an auxiliary hemostix 300, wherein the catheter connector 101 is used for connecting the central venous catheter, the hemostix and the auxiliary hemostix 300 are respectively connected with the catheter connector 101, the hemostix is used for sampling blood, and the auxiliary hemostix 300 is used for removing waste blood and a wash pipe.
In the actual use process, the catheter connector 101 is connected with the central venous catheter, so that the catheter connector 101 can be connected with the venous blood vessel, blood collection is carried out without searching and puncturing the venous blood vessel again, and the catheter connector 101 is the prior art and is used in hospitals. Then the auxiliary hemostix 300 is used for extracting the blood volume to be discarded, the hemostix is used for collecting blood of a patient, and finally the auxiliary hemostix 300 is used for performing 20 milliliter NS flushing pipe and pipe sealing operation.
The existing venous hemostix is mainly aimed at collecting peripheral venous blood vessels, when blood is collected through an indwelling central venous catheter, a syringe is usually used for extracting blood volume to be discarded, a new syringe is used for extracting blood and injecting the blood in the syringe into a test tube for inspection, a 20 ml NS flushing tube is needed after collection is completed, the syringe is needed to be frequently plugged and pulled in the blood collection process, the operation is troublesome, the blood collection efficiency is low, and a patient or medical staff is very easy to be stabbed.
The utility model is connected with the central venous catheter by arranging the catheter connector 101, so that blood collection is carried out without searching and puncturing venous blood vessels again, and the auxiliary hemostix 300 and the hemostix are arranged, so that the blood volume to be discarded can be extracted through the auxiliary hemostix 300, then the hemostix is used for collecting blood of a patient, finally, the auxiliary hemostix 300 is used for collecting blood by using 20 ml of NS flushing pipe, the risk of CABSI is reduced without frequent replacement of the injector in the blood collection process, and the risk of needle puncture is reduced by connecting the hemostix with the vacuum collection pipe.
In some embodiments, as shown in fig. 1 to 3, the blood collector includes a lancet 201, the lancet 201 is used to connect with a vacuum blood collection tube 202, the vacuum blood collection tube 202 is a disposable negative pressure vacuum glass tube capable of achieving quantitative blood collection, and needs to be used with a vein blood collection tube 201, the structure of the lancet 201 in the present application may be the same as that of one end of the vein blood collection tube 201 connected with the vacuum blood collection tube 202, when the lancet 201 is inserted into the vacuum blood collection tube 202, the vacuum blood collection tube 202 can suck blood in a vein blood vessel of a patient through a central vein catheter due to the negative pressure environment of the vacuum blood collection tube 202, compared with blood collection using a syringe, and the process is easier.
In some embodiments, as shown in FIGS. 1, 2, and 4, the supplemental blood collection device 300 includes a syringe connector 301, the syringe connector 301 being for connecting to a syringe. Preferably, the syringe connector 301 is a atraumatic needle hub.
The auxiliary hemostix 300 further comprises a catheter flusher 302, wherein the catheter flusher 302 is detachably connected with the atraumatic needle connector, the catheter flusher 302 can be a prefilled catheter flusher 302 or a non-prefilled catheter flusher 302, or a non-prefilled catheter flusher 302 is connected with the atraumatic needle connector to draw the blood volume to be discarded, and after the blood collection is finished, a prefilled catheter flusher 302 is connected with the atraumatic needle connector to flush the blood. It should be noted that, the non-prefilled catheter flusher 302 and the prefilled catheter flusher 302 are both conventional, and the prefilled catheter flusher 302 contains a solution of a flushing tube.
In some embodiments, as shown in fig. 1 to 3, the central venous catheter-specific blood collection device further includes a sealer 400 for separating the lancet 201 from the catheter connector 101 when the vacuum lancet 202 is separated from the lancet 201. When the vacuum blood collection tube 202 is separated from the blood collection needle 201, since the auxiliary blood collection tube 300 is in communication with the blood collection needle 201, if the auxiliary blood collection tube 300 is used to flush the central venous catheter at this time, the solution in the auxiliary blood collection tube 300 flows out of the blood collection needle 201, resulting in a flushing failure, so that the blood collection needle 201 needs to be separated from the catheter connector 101 when the vacuum blood collection tube 202 is separated from the blood collection needle 201.
In some embodiments, as shown in fig. 1-3, a lancet 201 is connected to a catheter connector 101 through an infusion tube,
The sealer 400 comprises an infusion tube clamp 401, wherein the infusion tube clamp 401 is arranged on an infusion tube, and the infusion tube clamp 401 is used for controlling on-off of the infusion tube. The infusion tube clip 401 is conventional in the art and may block the infusion tube so that the lancet 201 is separated from the catheter connector 101.
In some embodiments, as shown in FIGS. 1-3, the sealer 400 further includes a inching valve 402, through which the lancet 201 is connected with the catheter connector 101;
A driving unit for closing the inching valve 402 when the vacuum blood collection tube 202 is separated from the blood collection needle 201. The driving part can be electric or manual, preferably manual, so that the production cost of the disposable product can be reduced.
In some embodiments, as shown in FIGS. 1-3, the inching valve 402 includes a chamber on which the catheter connector 101 is disposed opposite the lancet 201, the catheter connector 101 being connected to the chamber, preferably the chamber is cylindrical, both the catheter connector 101 and the lancet 201 being collinear with the central axis of the chamber;
A movable part 402a, one end of the movable part 402a is connected with the blood taking needle 201, the other end of the movable part 402a penetrates through the cavity and is arranged in the cavity in a sliding way towards the catheter connector 101, one end of the movable part 402a is positioned in the cavity, the other end of the movable part 402a is positioned outside the cavity and is connected with the blood taking needle 201, when the movable part 402a slides in the cavity, the cavity is always isolated from the outside except being communicated with the catheter connector 101 and the blood taking needle 201, the movable part 402a is provided with a valve opening position and a valve closing position, and the valve opening position is positioned between the valve closing position and the blood taking needle 201;
An opening 402b, the opening 402b being provided in the movable portion 402a, the opening being connected to the lancet 201;
a piston portion 402c, the piston portion 402c being provided in the chamber, the piston portion 402c being configured to close the opening portion 402b when the movable portion 402a is located at the valve closing position.
When a medical staff inserts the vacuum blood collection tube 202 by using the blood collection needle 201, the blood collection needle 201 is subjected to resistance and moves towards the direction of the catheter connector 101, so that the movable part 402a is driven to move towards the direction close to the catheter connector 101, at the moment, the movable part 402a moves to a valve opening position, the opening part 402b is communicated with the cavity, at the moment, the blood collection needle 201, the movable part 402a, the opening part 402b, the cavity and the catheter connector 101 are sequentially communicated, so that the blood collection needle 201 is communicated with the catheter connector 101, namely, when the medical staff inserts the vacuum blood collection tube 202 by using the blood collection needle 201, the blood collection needle 201 and the catheter connector 101 can be automatically communicated for collecting blood;
When a medical staff presses the vacuum blood collection tube 202 to pull out from the blood collection tube 201, the blood collection tube 201 is subjected to frictional resistance and moves along with the vacuum blood collection tube 202 in a direction away from the catheter connector 101, so that the movable part 402a is driven to move in a direction away from the catheter connector 101, the movable part 402a moves to a valve closing position, the opening part 402b is isolated from the cavity, the opening part 402b is not communicated with the cavity (the blood collection tube 201 is isolated from the movable part 402a and the opening part 402b is not communicated with the cavity, and the blood collection tube 201 is isolated from the catheter connector 101), namely, when the medical staff presses the vacuum blood collection tube 202 to pull out from the blood collection tube 201, the blood collection tube 201 and the catheter connector 101 can be automatically isolated, and accordingly subsequent flushing operation is facilitated.
In some embodiments, as shown in FIGS. 1-3, the drive portion includes a spring 403, the spring 403 being connected between the movable portion 402a and the catheter connector 101, the spring 403 being configured to drive the movable portion 402a to the valve-closing position. In summary, although the movable portion 402a may be driven to move when the vacuum blood collection tube 202 is manually inserted or pulled out, the movable portion 402a may be caused to move during vibration, and in order to prevent the movable portion 402a from moving to the valve opening position due to vibration, the spring 403 is provided to drive the movable portion 402a to move to the valve closing position, so that the fault tolerance is improved and the occurrence probability of accidents is reduced.
In some embodiments, as shown in FIGS. 1, 2, and 4, the supplemental blood collection device 300 further includes a self-sealing device 501, the self-sealing device 501 being configured to separate the syringe connector 301 from the catheter connector 101 when the syringe is separated from the syringe connector 301, the self-sealing device 501 being configured identically to the sealing device 400. After the syringe draws 5 ml of blood, the syringe needs to be pulled out of the syringe connector 301, and at this time, the syringe connector 301 and the catheter connector 101 can be automatically separated by the self-sealing device 501, so that the blood is prevented from being ejected from the syringe connector 301.
In summary, a special blood sampling device for a central venous catheter is provided, a catheter connector, a blood collector and an auxiliary blood collector are used for connecting the central venous catheter, the blood collector and the auxiliary blood collector are respectively connected with the catheter connector, the blood collector is used for collecting blood, and the auxiliary blood collector is used for removing collected blood and a flushing pipe. The utility model is connected with the central venous catheter by arranging the catheter connector, does not need to search and puncture the venous blood vessel again to collect blood, is provided with the auxiliary hemostix and the hemostix, can firstly extract the blood volume which needs to be discarded by the auxiliary hemostix, then uses the hemostix to collect blood of a patient, finally uses the 20 ml NS flushing tube by the auxiliary hemostix, does not need to frequently replace the injector in the blood collection process, reduces the risk of CABSI, and reduces the risk of needle puncture by connecting the hemostix with the vacuum collection tube.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (5)
1. The special blood sampling device for the central venous catheter is characterized by comprising a catheter connector, a connecting rod and a connecting rod, wherein the catheter connector is used for connecting the central venous catheter;
The hemostix is connected with the catheter connector and is used for taking blood;
An auxiliary hemostix connected with the catheter connector for removing waste blood and wash pipes;
the hemostix comprises a blood taking needle, a vacuum blood taking tube and a blood collecting tube, wherein the blood taking needle is used for connecting the vacuum blood taking tube;
the auxiliary hemostix comprises a syringe connector, a connecting piece and a connecting piece, wherein the syringe connector is used for connecting a syringe;
The special blood sampling device for the central venous catheter further comprises a sealer, a connecting piece and a connecting piece, wherein the sealer is used for separating the blood sampling needle from the catheter connector when the vacuum blood sampling tube is separated from the blood sampling needle;
the sealer also comprises a inching valve, wherein the blood taking needle is connected with the catheter connector through the inching valve;
A driving part for closing the inching valve when the vacuum blood collection tube is separated from the blood collection needle;
The inching valve comprises a cavity, wherein the catheter connector and the blood taking needle are oppositely arranged on the cavity, and the catheter connector is connected with the cavity;
A movable part, one end of the movable part is connected with the blood taking needle, the other end of the movable part penetrates through the cavity and is arranged in the cavity towards the catheter connector in a sliding way, the movable part is provided with a valve opening position and a valve closing position, and the valve opening position is positioned between the valve closing position and the blood taking needle;
An opening portion provided on the movable portion, the opening being connected to the lancet;
and the piston part is arranged in the cavity and is used for closing the opening part when the movable part is positioned at the valve closing position.
2. The blood sampling device for central venous catheter according to claim 1, wherein the syringe connector is a atraumatic needle hub,
The auxiliary hemostix also comprises a catheter flusher, and the catheter flusher is detachably connected with the atraumatic needle joint.
3. The central venous catheter-specific blood collection device according to claim 1, wherein the blood collection needle is connected to the catheter connector via an infusion tube,
The sealer comprises an infusion tube clamp, wherein the infusion tube clamp is arranged on the infusion tube and is used for controlling the on-off of the infusion tube.
4. The central venous catheter-specific blood collection device of claim 1, wherein the drive section comprises a spring coupled between the movable section and the catheter connector for driving the movable section to the valve-closed position.
5. The special blood sampling device for a central venous catheter according to any one of claims 1 to 4, wherein the auxiliary blood sampling device further comprises a self-sealing device for separating the syringe connector from the catheter connector when the syringe is separated from the syringe connector, and the self-sealing device and the sealing device have the same structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323184917.5U CN222237673U (en) | 2023-11-23 | 2023-11-23 | Blood sampling device special for central venous catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323184917.5U CN222237673U (en) | 2023-11-23 | 2023-11-23 | Blood sampling device special for central venous catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222237673U true CN222237673U (en) | 2024-12-27 |
Family
ID=93985617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323184917.5U Active CN222237673U (en) | 2023-11-23 | 2023-11-23 | Blood sampling device special for central venous catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222237673U (en) |
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2023
- 2023-11-23 CN CN202323184917.5U patent/CN222237673U/en active Active
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