CN221266166U - Vacuum blood taking needle and blood taking tube - Google Patents

Abstract

The utility model relates to the technical field of blood collection, in particular to a vacuum blood taking needle and a blood taking tube, which comprise a blood taking tube and a blood taking tube, wherein the blood taking needle comprises a blood conveying tube, a needle head arranged at one end of the blood taking tube, a tail needle arranged at the other end of the blood conveying tube, and a sliding tube sleeved on the outer wall of the needle body end of the tail needle in a sliding manner, and the blood taking tube comprises a tube body, the outer wall of which is close to the top end and is provided with external threads, and a tube cover, the inner wall of which is provided with internal threads and is in threaded connection with the tube body. According to the utility model, the sliding cylinder can slide on the outer wall of the needle body end of the tail needle through the two connecting blocks and the sliding ring, the rubber cover is arranged in the mounting groove on the top surface of the pipe cover, the inserting block is arranged on the top surface of the rubber cover, the inserting groove is arranged at the bottom of the sliding cylinder, and the sealing ring is arranged in the placing groove on the top surface of the sliding cylinder, so that the contact area between the tail needle and the rubber cover and the external air can be reduced when the tail needle is inserted and extracted, the air entering the blood sampling pipe in the inserting and extracting process can be reduced, and the pollution to a blood sample is reduced.

Description

Vacuum blood taking needle and blood taking tube

Technical Field

The utility model relates to the technical field of blood collection, in particular to a vacuum blood taking needle and a blood taking tube.

Background

The vacuum venous hemostix which is widely used in recent years is a main hemostix for clinically replacing the traditional needle tube blood collection, and the vacuum hemostix comprises a vacuum blood collection needle and a blood collection tube, has a plurality of advantages and improvements compared with the traditional needle tube blood collection, and is widely accepted by doctors and patients in the world in clinical use for many years.

The patent with the publication number of CN219250185U discloses a disposable venous blood sampling device, which relates to the technical field of medical equipment, the device comprises a base, one end of the upper end face of the base is fixed with a side plate, the top of the side plate is fixed with a horizontal top plate, a C-shaped fixing frame is formed, a vacuum blood sampling tube is arranged in the fixing frame, the vacuum blood sampling tube is positioned between the base and the top plate, the upper end face of the base is fixed with a limiting spring sleeved on the periphery of the vacuum blood sampling tube, the top of the limiting spring is fixed with a limiting frame encircling the vacuum blood sampling tube, the top of the vacuum blood sampling tube is matched with a hose, one end of the hose is fixed with a blood sampling needle, the other end of the hose is fixed with a fixed block, one end of the fixed block, which is far away from the hose, penetrates the top plate, and a tail needle penetrating into the vacuum blood sampling tube is fixed.

Although the device is rational in infrastructure, can be after penetrating the rubber cock cap with the tail needle, can avoid appearing the condition of resilience, skew to guaranteed vacuum blood collection tube and hose connection's stability, do benefit to medical personnel and carry out venous blood collection smoothly, the device does not set up anti-pollution structure, and the tail needle is great with the area of contact of rubber cap contact's part and outside air when plug tail needle, thereby can make the air get into the blood collection tube and cause the pollution to the blood sample.

Disclosure of utility model

The utility model aims to provide a vacuum blood taking needle and a blood taking tube, which are used for solving the problems that the device proposed in the background art is not provided with an anti-pollution structure, and the contact area between the contact part of the tail needle and a rubber cover and the external air is large when the tail needle is inserted and pulled out, so that the air can enter the blood taking tube to pollute a blood sample.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a vacuum blood taking needle and heparin tube, includes blood taking needle and heparin tube, blood taking needle includes the blood transfusion tube, installs in the syringe needle of blood transfusion tube wherein one end, installs tail needle, the slip cap of locating on tail needle body end outer wall at the blood transfusion tube other end, the heparin tube is close to the body that top department was equipped with the external screw thread including the outer wall, the inner wall is equipped with the internal screw thread and with body threaded connection's tube cap, tube cap top surface is equipped with the mounting groove rather than the inner chamber is linked together, tube cap top surface mounting groove is inside inlay be equipped with tail needle matched with rubber cap, be fixed with on the rubber cap top surface and be the annular inserted block, the tail needle runs through rubber cap top surface and extends to the body inside, the slip cap top surface is equipped with the standing groove, the tail needle runs through the slip cap top surface standing groove, be fixed with two connecting blocks on the slip tube inner wall, two be fixed with between the connecting block with the slip ring with tail needle body end slip grafting, just the slip tube bottom is equipped with the slot with the inserted block slip grafting.

As a preferred embodiment, the blood taking needle further comprises a needle handle matched with the needle head, and the needle handle is fixed on the outer wall of one end of the needle head, which is close to the blood conveying tube.

As a preferable implementation mode, a sealing ring is fixed in the sliding cylinder top surface placing groove, and the outer wall of the needle tube end of the tail needle is tightly attached to the inner wall of the sealing ring.

As a preferable implementation mode, the depth of the slot at the bottom end of the sliding cylinder is the same as the height of the inserting block, and the slot at the bottom end of the sliding cylinder is also in a circular ring shape.

As a preferred embodiment, the length of the needle body end of the needle head is 10-25mm, and the length of the needle tip of the needle head is 1-3mm.

As a preferred embodiment, the diameter of the tube body is 12-15mm, and the length of the tube body is 70-100mm.

As a preferred embodiment, the length of the blood transfusion tube is 10-20cm, and the internal diameter of the blood transfusion tube is 2.1-3.2mm.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the sliding cylinder can slide on the outer wall of the needle body end of the tail needle through the two connecting blocks and the sliding ring, the rubber cover is arranged in the mounting groove on the top surface of the pipe cover, the inserting block is arranged on the top surface of the rubber cover, the inserting groove is arranged at the bottom of the sliding cylinder, and the sealing ring is arranged in the placing groove on the top surface of the sliding cylinder, so that the contact area between the tail needle and the rubber cover and the external air can be reduced when the tail needle is inserted and extracted, the air entering the blood sampling pipe in the inserting and extracting process can be reduced, and the pollution to a blood sample is reduced;

2. The depth of the slot at the bottom end of the sliding cylinder is the same as the height of the insert block, and the slot at the bottom end of the sliding cylinder is also in a circular shape, so that the bottom end of the sliding cylinder can be tightly attached to the top surface of the rubber cover.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view showing the overall structure of the lancet according to the present utility model;

FIG. 3 is a partial cross-sectional view of a lancet according to the present utility model;

FIG. 4 is a partial exploded view of the lancet according to the present utility model;

FIG. 5 is a schematic view of the overall structure of a blood collection tube according to the present utility model;

FIG. 6 is a partial exploded view of a blood collection tube according to the present utility model;

Fig. 7 is a partial exploded view of a blood collection tube according to the present utility model.

The meaning of each reference numeral in the figures is:

1. A blood taking needle; 11. a blood transfusion tube; 12. a needle; 13. a tail needle; 14. a needle handle; 15. a slide cylinder; 16. a seal ring; 17. a slip ring; 18. a connecting block; 2. a blood collection tube; 21. a tube body; 22. a tube cover; 23. a rubber cover; 24. and (5) inserting blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 7, the present utility model provides a technical solution: a vacuum blood taking needle and blood taking tube, including blood taking needle 1 and blood taking tube 2, blood taking needle 1 includes blood conveying tube 11, needle head 12 installed at one end of blood conveying tube 11, tail needle 13 installed at another end of blood conveying tube 11, slide tube 15 sliding sleeve on the outer wall of needle body end of tail needle 13, blood taking tube 2 includes tube body 21 with external screw thread near top end of outer wall, tube cover 22 with internal screw thread on inner wall and connected with tube body 21 screw thread, tube cover 22 top surface has mounting groove communicating with its inner cavity, tube cover 22 top surface mounting groove is embedded with rubber cover 23 matched with tail needle 13, rubber cover 23 top surface is fixed with inserting block 24 in ring shape, tail needle 13 penetrates the rubber cover 23 top surface and extends to the inside of tube body 21, slide tube 15 top surface has placing groove, the tail needle 13 runs through the top surface standing groove of the sliding cylinder 15, two connecting blocks 18 are fixed on the inner wall of the sliding cylinder 15, a sliding ring 17 which is in sliding connection with the needle body end of the tail needle 13 is fixed between the two connecting blocks 18, the bottom end of the sliding cylinder 15 is provided with a slot which is in sliding connection with the inserting block 24, the sliding cylinder 15 can slide on the outer wall of the needle body end of the tail needle 13 by arranging the two connecting blocks 18 and the sliding ring 17, a rubber cover 23 is arranged in the top surface mounting groove of the tube cover 22, the inserting block 24 is arranged on the top surface of the rubber cover 23, and the slot is arranged at the bottom of the sliding cylinder 15, so that the contact area between the tail needle 13 and the rubber cover 23 and the external air can be reduced when the tail needle 13 is inserted and extracted, the air entering the blood sampling tube 2 in the inserting and extracting process can be reduced, and the pollution to blood samples can be reduced.

In this embodiment, the blood taking needle 1 further comprises a needle handle 14 matched with the needle 12, and the needle handle 14 is fixed on the outer wall of one end of the needle 12 close to the blood conveying tube 11, so that the needle 12 is convenient for a medical staff to operate.

In addition, the sealing ring 16 is fixed in the top surface placing groove of the sliding cylinder 15, and the outer wall of the needle tube end of the tail needle 13 is tightly attached to the inner wall of the sealing ring 16, so that air can be prevented from entering the sliding cylinder 15 from a gap between the tail needle 13 and the top surface placing groove of the sliding cylinder 15.

Further, the depth of the bottom slot of the sliding cylinder 15 is the same as the height of the insert block 24, and the shape of the bottom slot of the sliding cylinder 15 is also circular, so that the bottom end of the sliding cylinder 15 can be tightly attached to the top surface of the rubber cover 23.

Specifically, the length of the needle body end of the needle head 12 is 10-25mm, the length of the needle tip of the needle head 12 is 1-3mm, the length of the needle body end of the needle head 12 is preferably 20mm, and the needle tip of the needle head 12 can be smoothly inserted into the skin of a patient.

It is noted that the diameter of the tube 21 is 12-15mm and the length of the tube 21 is 70-100mm, and the diameter of the tube 21 is preferably 13mm, and the length of the tube 21 is preferably 75mm, so that the blood transported by the blood transfusion tube 11 can be collected.

It is worth noting that the length of the blood transfusion tube 11 is 10-20cm, and the inner diameter of the blood transfusion tube 11 is 2.1-3.2mm, the length of the blood transfusion tube 11 is preferably 15cm, and the inner diameter of the blood transfusion tube 11 is preferably 2.6mm, so that the blood collected by the needle 12 can be conveyed into the tube body 21.

The needle 12, the tail needle 13, and the blood transfusion tube 11 in this embodiment are known in the prior art, and the structure and the working principle thereof are as known to those skilled in the art, and are not described herein.

In the specific use process of the embodiment, when the tail needle 13 needs to be inserted into the tube body 21, the sliding barrel 15 on the outer wall of the needle body end of the tail needle 13 is firstly slid, the sliding barrel 15 moves under the guiding action of the two connecting blocks 18 and the sliding ring 17, so that the slot at the bottom end of the sliding barrel 15 is in sliding connection with the insert block 24 on the top surface of the rubber cover 23, then the needle body end of the tail needle 13 is pushed downwards, and the tail needle 13 can penetrate through the rubber cover 23 and extend into the tube body 21, otherwise, the tail needle 13 can be pulled out.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a vacuum blood taking needle and heparin tube, includes blood taking needle (1) and heparin tube (2), its characterized in that: blood taking needle (1) include blood transfusion pipe (11), install syringe needle (12) in blood transfusion pipe (11) wherein one end, install tail needle (13) at the blood transfusion pipe (11) other end, slide sleeve locate tail needle (13) on needle body end outer wall slide tube (15), blood taking tube (2) are close to top department including the outer wall and are equipped with external screw thread body (21), inner wall are equipped with internal screw thread and with tube body (21) threaded connection's tube cap (22), tube cap (22) top surface is equipped with the mounting groove rather than the inner chamber is linked together, tube cap (22) top surface mounting groove inside inlay be equipped with tail needle (13) matched with rubber cap (23), be fixed with on rubber cap (23) top surface be ring-shaped inserted block (24), tail needle (13) run through rubber cap (23) top surface and extend to inside tube body (21), slide tube (15) top surface is equipped with the standing groove, tail needle (13) run through slide tube (15) top surface standing groove, be fixed with on slide tube (15) inner wall two tail needle (18) top surfaces are equipped with between two insert needle (18) and slide tube (17) connecting block (17).

2. The vacuum lancet and lancet tube according to claim 1, wherein: the blood taking needle (1) further comprises a needle handle (14) matched with the needle head (12), and the needle handle (14) is fixed on the outer wall of one end of the needle head (12) close to the blood conveying tube (11).

3. The vacuum lancet and lancet tube according to claim 1, wherein: a sealing ring (16) is fixed in the top surface placing groove of the sliding cylinder (15), and the outer wall of the needle tube end of the tail needle (13) is tightly attached to the inner wall of the sealing ring (16).

4. The vacuum lancet and lancet tube according to claim 1, wherein: the depth of the bottom slot of the sliding cylinder (15) is the same as the height of the inserting block (24), and the shape of the bottom slot of the sliding cylinder (15) is also circular.

5. The vacuum lancet and lancet tube according to claim 1, wherein: the length of the needle body end of the needle head (12) is 10-25mm, and the length of the needle tip of the needle head (12) is 1-3mm.

6. The vacuum lancet and lancet tube according to claim 1, wherein: the diameter of the pipe body (21) is 12-15mm, and the length of the pipe body (21) is 70-100mm.

7. The vacuum lancet and lancet tube according to claim 1, wherein: the length of the blood transfusion tube (11) is 10-20cm, and the inner diameter of the blood transfusion tube (11) is 2.1-3.2mm.