CN216823454U - Blood taking needle for arteriovenous fistula and dialysis catheter - Google Patents
Blood taking needle for arteriovenous fistula and dialysis catheter Download PDFInfo
- Publication number
- CN216823454U CN216823454U CN202122837935.3U CN202122837935U CN216823454U CN 216823454 U CN216823454 U CN 216823454U CN 202122837935 U CN202122837935 U CN 202122837935U CN 216823454 U CN216823454 U CN 216823454U
- Authority
- CN
- China
- Prior art keywords
- catheter
- blood
- needle
- puncture needle
- dialysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an arteriovenous internal fistula and a blood taking needle for a dialysis catheter, relates to the technical field of medical care, and mainly aims to solve the technical problems that the blood taking operation of a dialysis patient is complicated and the normal maintenance of a dialysis access is influenced in the prior art and help to relieve the pain of blood taking of the dialysis patient. The blood taking needle for the arteriovenous internal fistula and the dialysis catheter comprises a luer connector, a catheter and a puncture needle, wherein the catheter is connected with the luer connector and the puncture needle, and the luer connector is used for being connected with the arteriovenous internal fistula of a patient; and a feedback unit for feeding back liquid is arranged at one end close to the puncture needle. When the blood sampling device is used, blood flows through the Ruhr joint, the catheter and the puncture needle in sequence through the arteriovenous internal fistula and finally flows into the blood sampling tube to finish blood sampling operation; finally, the nursing staff can return the priming solution to the catheter and the luer joint through the return unit, so that the catheter is prevented from being blocked by thrombus formed by blood stagnation in the catheter, multiple puncture of the patient is avoided, and the pain of the patient is effectively relieved.
Description
Technical Field
The utility model relates to the technical field of medical care, in particular to a blood taking needle for arteriovenous internal fistula and a dialysis catheter.
Background
The blood sampling method is adopted to take blood when a general patient takes blood, but for the patient who regularly performs hemodialysis, because arteriovenous internal fistula puncture can be performed before dialysis, blood sampling operation is performed through the arteriovenous internal fistula, and a blood sample is often taken through a dialysis catheter for the patient with the dialysis catheter. When blood is collected from a dialysis patient, the arteriovenous fistula can be directly connected with an injector to draw blood as a bleeding and blood returning passage of extracorporeal circulation of the hemodialysis patient. In the blood sampling process, sterile operation can be ensured only by completing the blood sampling with the aid of an assistant; in addition, since the amount of blood is difficult to accurately estimate, about 3ml of residual blood is exposed after completion of blood drawing, and the exposed catheter port and the residual blood are likely to cause infection. Most importantly, the residual blood is prone to agglutination, which can cause blockage of the catheter, which can cause difficulties in the patient's health and maintenance of the dialysis access.
In order to solve the above problems, there is a need to develop a blood collecting device which can facilitate blood collection of a dialysis patient without affecting normal maintenance of a dialysis access.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an arteriovenous internal fistula and a blood taking needle for a dialysis catheter, and aims to solve the technical problems that the blood taking operation of a dialysis patient is complicated and the normal maintenance of a dialysis access is influenced in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.
In order to realize the purpose, the utility model provides the following technical scheme:
the utility model provides a blood taking needle for arteriovenous internal fistula and a dialysis catheter, which comprises a luer connector, a catheter and a puncture needle, wherein the catheter is connected with the luer connector and the puncture needle, and the luer connector is used for being connected with the arteriovenous internal fistula of a patient; and a feedback unit for feeding back liquid is arranged at one end close to the puncture needle.
When the blood sampling device is used, the luer joint can be connected with an arteriovenous internal fistula of a patient, the puncture needle is used for puncturing a corresponding blood sampling tube, and at the moment, blood sequentially flows through the luer joint, the catheter and the puncture needle through the arteriovenous internal fistula and finally flows into the blood sampling tube to finish blood sampling operation; finally, the nursing staff can return the priming solution to the catheter and the luer joint through the return unit, so that the blood remained in the catheter and the luer joint is returned to the body of the patient, the catheter is prevented from being blocked by thrombus due to blood stagnation in the catheter (comprising the catheter, the luer joint and corresponding arteriovenous inflow), and meanwhile, the patient is prevented from being punctured for many times, and the pain of the patient is effectively relieved.
On the basis of the technical scheme, the utility model can be further improved as follows.
As a further improvement of the utility model, a protective cover is also arranged at the puncture needle, the protective cover is a hollow columnar structure with an opening at one end, and the length of the protective cover in the axial direction is greater than that of the puncture needle; when the protection cover covers the periphery of the puncture needle, the needle head of the puncture needle is positioned in the protection cover.
The protective cover can effectively protect medical personnel who operate to take blood and avoid the medical personnel from being punctured by the puncture needle.
As a further development of the utility model, the return unit is located outside the protective cover.
The infusion back unit positioned outside the protective cover can not be influenced by the protective cover when in use, thereby being convenient for the operation of medical staff.
As a further improvement of the utility model, a prompting paste is attached to the surface of the protective cover.
As a further improvement of the utility model, the cue stick is coated with color blocks of at least two different colors.
As a further improvement of the utility model, the prompt paste is coated with arrow icons, and the arrow icons point to different arrangement directions of the color blocks.
As a further improvement of the utility model, the blood collection tube also comprises a blood collection tube, and the surface of the blood collection tube is provided with the color which is the same as the color of the color block.
The prompt sticker, the color block positioned on the prompt sticker, the arrow icon and the like are beneficial to the blood sampling treatment of medical workers by selecting different blood sampling tubes according to test requirements, and the collected blood is beneficial to the test treatment.
As a further improvement of the utility model, the feedback unit is made of a soft material that can be punctured. This structure ensures that the feedback unit can be easily punctured, facilitating the input of priming solution.
As a further improvement of the utility model, the infusion device further comprises a plastic ring, and the feedback unit is positioned on the outer peripheral side of the plastic ring.
As a further improvement of the utility model, the plastic ring and the catheter are of an integrated structure, and the inner diameter of the plastic ring is larger than that of the catheter.
Compared with the prior art, when the blood taking needle for the arteriovenous internal fistula and the dialysis catheter provided by the preferred embodiment of the utility model is used, the on-off of the blood taking needle and the arteriovenous internal fistula and the dialysis catheter can be conveniently realized through the luer connector, the puncture needle can be communicated with a blood taking tube for containing sucked blood, and meanwhile, the protective cover positioned outside the puncture needle can effectively protect an operator from puncture; in addition, the shaping ring positioned at one end of the catheter close to the puncture needle and the infusion back unit positioned on the periphery of the shaping ring can back flush the blood remained in the catheter into the body of the patient in a mode of externally filling the priming solution, so that the influence of the blood remained in the catheter on the body health of the patient due to the formation of thrombus caused by agglutination is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of a blood taking needle for arteriovenous fistula and dialysis catheters according to the utility model;
FIG. 2 is a schematic diagram of the arteriovenous fistula and dialysis catheter of the present invention in use with a blood collection needle for blood collection;
FIG. 3 is a schematic view of the arteriovenous fistula and the use of a blood taking needle for a dialysis catheter for blood return transfusion in accordance with the present invention;
FIG. 4 is a schematic view showing the structure of a catheter in the blood collection needle for arteriovenous fistula and dialysis catheter of the present invention;
FIG. 5 is a schematic view showing another structure of a catheter in the blood collection needle for arteriovenous fistula and dialysis catheters according to the present invention;
FIG. 6 is a schematic view showing the structure of a protective cap of the blood collection needle for arteriovenous fistula and dialysis catheter of the present invention.
In the figure: 1. a luer fitting; 2. a catheter; 3. puncturing needle; 4. a plastic ring; 41. a feedback unit; 5. a protective cover; 51. a prompt sticker; 6. a blood collection tube; 7. the syringe is used for back transfusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.
The utility model provides an arteriovenous internal fistula and a blood taking needle for a dialysis catheter, which can be connected with the arteriovenous internal fistula of a hemodialysis patient and perform blood taking operation.
Specifically, the blood taking needle for the arteriovenous internal fistula and the dialysis catheter comprises a luer connector 1, a catheter 2 and a puncture needle 3, wherein the catheter 2 is connected with the luer connector 1 and the puncture needle 3, and the luer connector 1 is used for being connected with the arteriovenous internal fistula of a patient; a return unit 41 for returning the liquid is provided near the end of the puncture needle 3, as shown in fig. 1.
When in use, the auxiliary materials of the dialysis catheter need to be replaced and disinfected and fixed, and the peripheral skin needs to be disinfected; then, the heparin cap at the end of the dialysis catheter is unscrewed, the catheter port is disinfected, the catheter sealing liquid in the catheter is sucked, and then the luer 1 is connected with the catheter; the puncture needle 3 is used for puncturing a corresponding vacuum blood collection tube 6, at the moment, blood flows through the luer connector 1, the catheter 2 and the puncture needle 3 in sequence under the action of pressure through arteriovenous internal fistula and finally flows into the vacuum blood collection tube 6 to finish blood collection operation, as shown in figure 2; finally, the care giver may puncture the reinfusion unit 41 with a reinfusion syringe 7 filled with a priming solution that is able to flow into the catheter via the catheter 2 and the luer 1, thereby reinfusing the blood remaining in the catheter 2, the luer 1 and the catheter back into the patient, as shown in fig. 3. The operation can effectively prevent the blood in the catheter (including the catheter 2, the luer 1 and the corresponding internal flow of artery and vein) from stagnating to form thrombus to block the catheter, and simultaneously, the multiple puncture of the patient is avoided, and the pain of the patient is effectively relieved.
Specifically, the priming solution may be other liquids such as physiological saline that do not affect the health of the patient.
It should be noted that, when the blood return operation is performed, the puncture needle 3 (or the connection between the puncture needle 3 and the catheter 2) is in a closed state.
As an optional embodiment, a protective cover 5 is further arranged at the puncture needle 3, the protective cover 5 is a hollow columnar structure with one open end, and the length of the protective cover 5 in the axial direction is greater than that of the puncture needle 3; when the protective cap 5 is provided on the outer peripheral side of the puncture needle 3, the tip of the puncture needle 3 is positioned inside the protective cap 5.
The protective cover 5 can effectively protect medical staff who operate to take blood and avoid the medical staff from being punctured by the puncture needle 3.
As an alternative embodiment, the return unit 41 is located outside the protective cover 5.
The infusion back unit 41 positioned outside the protective cover 5 can be free from the influence of the protective cover 5 when in use, thereby facilitating the operation of medical staff.
As an alternative embodiment, a prompt sticker 51 is attached to the surface of the protective cover 5.
As an alternative embodiment, the prompting sticker 51 is coated with at least two color patches of different colors, and in this case, the surface of the blood collection tube 6 is provided with the same color as the color patch. The prompt sticker 51, and the color block and the arrow icon on the prompt sticker 51 help the medical staff select different blood collection tubes 6 for blood collection processing according to the needs of the test, and help the collected blood to be tested.
As an alternative embodiment, the prompt sticker 51 is coated with arrow icons, and the arrow icons point to the arrangement direction of different color patches.
The structure of the protective cover 5 is shown in fig. 6.
For convenience of use, as a further improvement of the present invention, the feedback unit 41 is made of a pierceable soft material. This configuration ensures that the refill unit 41 can be punctured relatively easily to facilitate priming solution input.
In particular, the infusion back unit 41 has a hardness less than that of the catheter 2. Generally, the feedback unit 41 may be made of latex material.
The structure of the feedback unit 41 will be specifically described below.
As an alternative embodiment, the feedback unit 41 may be a flexible cylindrical sealing structure provided through the wall of the catheter 2. When the transfusion process is not performed, the transfusion unit 41 can effectively isolate the air and the blood in the catheter 2, and prevent the blood from being polluted by the external environment; the reinfusion unit 41 can be easily punctured by the reinfusion syringe 7 when a reinfusion process is performed.
For convenience of operation, as an alternative embodiment, the catheter 2 is further provided with a plastic ring 4, and the feedback unit 41 is located on the outer periphery of the plastic ring 4. The shaping ring 4 has a hardness not less than that of the catheter 2.
Specifically, the shaping ring 4 and the catheter 2 are of an integral structure, and the inner diameter of the shaping ring 4 is larger than that of the catheter 2. The structure of the catheter 2 is now as shown in figure 4.
Alternatively, the shaping ring 4 is a structure similar to a three-way tube, one end of which is closed by the feedback unit 41, and the other two ends of which are respectively communicated with the catheter 2 and the puncture needle 3. At this time, the structure of the catheter 2 is as shown in FIG. 5.
It should be noted that the catheter 2 and the shaping ring 4 may also be a one-piece structure.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The blood taking needle for the arteriovenous internal fistula and the dialysis catheter is characterized by comprising a luer connector (1), a liquid guiding pipe (2) and a puncture needle (3), wherein the liquid guiding pipe (2) is connected with the luer connector (1) and the puncture needle (3), and the luer connector (1) is used for being connected with the arteriovenous internal fistula of a patient; and a return unit (41) for returning liquid is arranged at one end close to the puncture needle (3).
2. The arteriovenous fistula and blood collection needle for a dialysis catheter according to claim 1, wherein a protective cap (5) is further provided at the puncture needle (3), the protective cap (5) has a hollow columnar structure with one end open and has a length in an axial direction greater than that of the puncture needle (3); when the protection cover (5) covers the outer periphery of the puncture needle (3), the needle head of the puncture needle (3) is positioned in the protection cover (5).
3. The arteriovenous fistula and dialysis catheter blood collection needle according to claim 2, wherein the reinfusion unit (41) is located outside the protective cover (5).
4. The arteriovenous fistula and dialysis catheter blood collection needle according to claim 2, wherein a presentation tape (51) is attached to a surface of the protective cover (5).
5. The arteriovenous fistula and dialysis catheter blood collection needle according to claim 4, wherein the indication sticker (51) is coated with color patches of at least two different colors.
6. The arteriovenous fistula and dialysis catheter blood taking needle according to claim 5, wherein an arrow mark is coated on the tip stick (51) and points to different arrangement directions of the color blocks.
7. The arteriovenous fistula and dialysis catheter blood collection needle according to any one of claims 1 to 6, wherein the reinfusion unit (41) is made of a pierceable soft material.
8. The arteriovenous fistula and dialysis catheter blood collection needle according to claim 1, further comprising a plastic ring (4), wherein the reinfusion unit (41) is located on an outer peripheral side of the plastic ring (4).
9. The arteriovenous fistula and blood taking needle for a dialysis catheter as set forth in claim 8, wherein the plastic ring (4) and the catheter (2) are of an integral structure and an inner diameter of the plastic ring (4) is larger than an inner diameter of the catheter (2).
10. The arteriovenous fistula and blood collection needle for a dialysis catheter according to claim 5, further comprising a blood collection tube (6), wherein the surface of the blood collection tube (6) is provided with a color the same as the color of one of the color patches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122837935.3U CN216823454U (en) | 2021-11-18 | 2021-11-18 | Blood taking needle for arteriovenous fistula and dialysis catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122837935.3U CN216823454U (en) | 2021-11-18 | 2021-11-18 | Blood taking needle for arteriovenous fistula and dialysis catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216823454U true CN216823454U (en) | 2022-06-28 |
Family
ID=82103188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122837935.3U Active CN216823454U (en) | 2021-11-18 | 2021-11-18 | Blood taking needle for arteriovenous fistula and dialysis catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216823454U (en) |
-
2021
- 2021-11-18 CN CN202122837935.3U patent/CN216823454U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7662110B2 (en) | Devices for collecting blood and administering medical fluids | |
| CN216823454U (en) | Blood taking needle for arteriovenous fistula and dialysis catheter | |
| CN212789302U (en) | Transfusion system with tube sealing device | |
| CN206612801U (en) | A kind of arterial blood gas blood-taking device | |
| CN211584646U (en) | Transparent remaining needle with positive pressure air bag | |
| CN208958893U (en) | Disposable flushable drainage bag | |
| CN106974663A (en) | Multi-functional remaining needle | |
| CN211155837U (en) | Remaining needle with blood sampling function | |
| CN207306663U (en) | Disposable center venous pressure measuring device | |
| CN211749930U (en) | Puncture drainage device is intervene to internal medicine clinic | |
| CN213465006U (en) | Invasive blood pressure monitoring blood sampling device of dosing | |
| CN219721530U (en) | Novel drip-proof puncture outfit | |
| CN217162091U (en) | Pressure detection device | |
| CN205832254U (en) | Change-blood bloodletting instrument | |
| CN216456337U (en) | Medicine adding conversion head and liquid collecting bag thereof | |
| CN212574878U (en) | Arteriovenous internal fistula puncture needle for blood sampling | |
| CN215023975U (en) | Remaining needle convenient for blood sampling and blood backflow prevention | |
| CN217611041U (en) | Invasive blood pressure sensor with blood storage bypass | |
| CN214434418U (en) | Intracardiac branch of academic or vocational study piercing depth | |
| CN218978919U (en) | Positive pressure blood sampling vein indwelling needle | |
| CN219516472U (en) | Disposable puncture needle for diagnosis stage | |
| CN215937764U (en) | Disposable oral cavity flushing device for patient through oral tracheal intubation | |
| CN215424653U (en) | Blood sampling device | |
| CN203885505U (en) | Venous indwelling channel hemostix | |
| CN212546926U (en) | Disposable invasive pressure monitoring sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |