Medical blood sampling connecting tube stable in connection

Abstract

The utility model relates to the technical field of blood sampling connecting tubes, and provides a medical blood sampling connecting tube stable in connection, which comprises a connecting tube body, a connecting female head, a connecting male head and a conveying tube, the connecting female head is connected to the head end of the connecting tube body, the connecting male head is connected to the head end of the conveying tube, and the connecting male head and the connecting female head are arranged in an inserted mode. A female head convex ring is fixed outside the connecting female head, a circle of annular outer channel is arranged at the right end of the female head convex ring, side openings are formed in the positions, located on the upper side and the lower side of the annular outer channel, of the right end of the female head convex ring, and a circle of annular inner channel is arranged at the left end of the interior of the annular outer channel. A male head convex ring is fixed outside the connecting male head, and two sliding rods are symmetrically fixed to the upper side and the lower side of the left end of the male head convex ring. The sliding rod is movably connected with the annular outer channel and the annular inner channel. By means of the technical scheme, the problems that in the prior art, although a medical blood sampling connecting pipe adopts a threaded connection mode, connection is stable, the medical blood sampling connecting pipe needs to be repeatedly rotated by multiple circles, and operation is troublesome are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blood sampling connecting tubes, and in particular to a medical blood sampling connecting tube with stable connection. Background Art

[0002] A blood collection needle is an instrument used to collect blood samples during medical examinations. It consists of a needle and a needle rod. The needle is located at the head of the needle rod, and a sheath is slidably connected to the needle rod. A return spring is provided between the sheath and the needle rod, and the initial position of the sheath is located at the head of the needle and the needle rod. The blood collection connecting tube is a pipe used to connect the blood collection needle and the container.

[0003] After searching, a utility model with patent document number "CN211213184U" discloses a disposable anti-needlestick venous blood collection needle. In the patent specification, it is recorded that the end of the blood collection connecting tube is connected to the bottle stopper puncture needle and is threadedly connected to the bottle stopper puncture needle. It can be seen that the blood collection connecting tube is connected by threaded connection. Although the threaded connection is stable, it needs to be repeatedly rotated multiple times, which is more troublesome to operate. Utility Model Content

[0004] The utility model provides a medical blood sampling connecting tube with stable connection, which solves the problem that the medical blood sampling connecting tube in the prior art adopts a threaded connection mode, which is stable but needs to be repeatedly rotated for multiple circles, making the operation more troublesome.

[0005] The technical scheme of the utility model is as follows: a medical blood sampling connecting tube with stable connection, comprising a connecting tube body, a connecting female head, a connecting male head and a conveying tube, the connecting female head is connected to the head end of the connecting tube body, the connecting male head is connected to the head end of the conveying tube, the connecting male head and the connecting female head are plugged into the setting, the connecting female head is fixed with a female head convex ring on the outside of the connecting female head, a circle of annular outer channel is provided at the right end of the female head convex ring and side openings are opened on the right end and located at the upper and lower sides of the annular outer channel, a circle of annular inner channel is provided at the left end of the inner part of the annular outer channel, the connecting male head is fixed with a male head convex ring on the outside of the connecting male head, two sliding rods are symmetrically fixed on the upper and lower sides of the left end of the male head convex ring, the sliding rod is movably connected to the annular outer channel and the annular inner channel, a side block is fixed at the end of the sliding rod, the side block is movably connected to the side opening and the annular inner channel, a card bead is elastically connected to one end of the side block away from each other, and a card hole is opened at the front and rear ends of the female head convex ring, and the card bead is plugged into the card hole.

[0006] Furthermore, the female convex ring and the male convex ring are in close contact with each other as the female connector and the male connector are plugged into each other.

[0007] Furthermore, the side opening is communicated with the annular outer channel, and the side opening is communicated with the annular inner channel.

[0008] Furthermore, the diameter of the annular inner channel is larger than the diameter of the annular outer channel.

[0009] Furthermore, the slide bar moves into the annular inner track along the annular outer track, and the side block moves into the annular inner track along the side opening.

[0010] Furthermore, a spring groove is formed at one end of the side blocks that is away from each other, the clamping bead is located inside the spring groove, and a spring is connected between the clamping bead and the bottom of the spring groove.

[0011] Furthermore, the connecting pipe body is made of PBAT.

[0012] The working principle and beneficial effects of the utility model are:

[0013] 1. In the utility model, by arranging a female convex ring on the outside of the connecting female head and arranging a male convex ring on the outside of the connecting male head, when the connecting male head and the connecting female head are plugged in, the side block and the side opening can be aligned, so that the side block slides into the side opening while the slide bar slides into the annular outer track. In this way, after the side block slides into the annular inner track along the side opening and the slide bar slides into the inside of the annular inner track along the annular outer track, the connecting male head or the connecting female head can be rotated ninety degrees. At this time, the side block makes a circular motion of ninety degrees in the annular inner track until the card bead corresponds to the card hole, and the card bead is inserted into the card hole to card the side block. In this way, not only is the connection of the blood collection connecting tube stable, but also it does not need to be rotated multiple times, so it is easy to operate.

[0014] 2. In the present invention, the connecting pipe body is made of PBAT, which is a biodegradable material. Therefore, the connecting pipe body can be made of biodegradable materials and can be naturally degraded after use, thereby reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A partial enlarged view of;

[0018] Figure 3 For this utility model Figure 1 B is a partial enlarged view;

[0019] Figure 4 It is a cross-sectional schematic diagram of the side block of the utility model;

[0020] Figure 5 For this utility model Figure 1 A partial enlarged view of C;

[0021] In the figure: 1-connecting tube body, 2-connecting female head, 3-female head convex ring, 4-connecting male head, 5-delivery pipe, 6-male head convex ring, 7-annular outer channel, 8-annular inner channel, 9-side opening, 10-side block, 11-spring groove, 12-card bead, 13-sliding rod, 14-spring, 15-card hole. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figure 1 to Figure 5 As shown, this embodiment proposes a medical blood sampling connecting tube with stable connection, including a connecting tube body 1, a connecting female head 2, a connecting male head 4 and a conveying tube 5, the connecting female head 2 is connected to the head end of the connecting tube body 1, the connecting male head 4 is connected to the head end of the conveying tube 5, the connecting male head 4 is plugged with the connecting female head 2, a female head convex ring 3 is fixed on the outside of the connecting female head 2, a circle of annular outer channel 7 is provided on the right end of the female head convex ring 3, side openings 9 are opened on the right end of the female head convex ring 3 and on the upper and lower sides of the annular outer channel 7, a circle of annular inner channel 8 is provided on the left end of the inner part of the annular outer channel 7, the side opening 9 is communicated with the annular outer channel 7, the side opening 9 is communicated with the annular inner channel 8, the diameter of the annular inner channel 8 is larger than the diameter of the annular outer channel 7, a male head convex ring 6 is fixed on the outside of the connecting male head 4, and the female head convex ring 3 and the male head convex ring 6 are tightly attached as the connecting female head 2 and the connecting male head 4 are plugged.

[0025] In this embodiment, the end of the connecting tube body 1 is connected to a blood collection needle, so when the connecting tube body 1 needs to be connected to the delivery tube 5, the male connector 4 is plugged into the female connector 2 so that the female connector convex ring 3 and the male connector convex ring 6 are in close contact.

[0026] Example 2

[0027] like Figure 1 to Figure 5 As shown, two sliding rods 13 are symmetrically fixed on the upper and lower sides of the left end of the male convex ring 6, and the sliding rod 13 is movably connected with the annular outer track 7 and the annular inner track 8. A side block 10 is fixed to the end of the sliding rod 13, and the side block 10 is movably connected with the side opening 9 and the annular inner track 8. The sliding rod 13 moves into the annular inner track 8 along the annular outer track 7, and the side block 10 moves into the annular inner track 8 along the side opening 9.

[0028] In this embodiment, when the male connector 4 is plugged into the female connector 2, the side block 10 and the side opening 9 are aligned so that the side block 10 slides into the side opening 9 while the slide bar 13 slides into the annular outer track 7. After the side block 10 slides into the annular inner track 8 along the side opening 9 and the slide bar 13 slides into the annular inner track 8 along the annular outer track 7, the male connector 4 or the female connector 2 can be rotated ninety degrees to dislocate the side block 10 from the side opening 9, so that the side block 10 cannot be moved out of the annular inner track 8.

[0029] Example 3

[0030] like Figure 1 to Figure 5 As shown, the end of the side block 10 away from each other is elastically connected with a card bead 12, the front and rear ends of the female head convex ring 3 are provided with card holes 15, the end of the side block 10 away from each other is provided with a spring groove 11, the card bead 12 is located inside the spring groove 11, a spring 14 is connected between the card bead 12 and the bottom of the spring groove 11, and the card bead 12 is plugged into the card hole 15.

[0031] In this embodiment, when the side block 10 slides into the side opening 9, the card bead 12 is squeezed by the inner wall of the side opening 9 to slide into the spring groove 11 and squeeze the spring 14, and when the side block 10 moves into the annular inner channel 8, the card bead 12 is squeezed by the inner wall of the annular inner channel 8, and then when the side block 10 moves in a circular motion at a 90-degree angle in the annular inner channel 8 until the card bead 12 corresponds to the card hole 15, the spring 14 will reset, so that the card bead 12 is inserted into the card hole 15 to clamp the side block 10, which not only The connection is stable and does not require multiple turns, so the operation is convenient. On the contrary, when the blood collection connecting tube needs to be removed, the card bead 12 inserted in the card hole 15 is pressed. At this time, the card bead 12 will move out of the card hole 15 and move into the spring groove 11 to squeeze the spring 14. In this way, the connecting male head 4 or the connecting female head 2 is rotated ninety degrees to make the side block 10 correspond to the side port 9. Then, the connecting male head 4 can be pulled out, and the side block 10 can slide out of the annular inner channel 8 along the side port 9, which is also convenient for disassembling the blood collection connecting tube.

[0032] In addition, by making the connecting pipe body 1 made of PBAT, since PBAT is a biodegradable material, the connecting pipe body 1 can be made of biodegradable materials and can be naturally degraded after use, thereby reducing environmental pollution.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical blood sampling connection tube with a stable connection, comprising a connection tube body (1), a connection female head (2), a connection male head (4) and a delivery tube (5), wherein the connection female head (2) is connected to the head end of the connection tube body (1), the connection male head (4) is connected to the head end of the delivery tube (5), and the connection male head (4) is plugged with the connection female head (2), characterized in that: A female convex ring (3) is fixed on the outside of the connecting female head (2), a ring-shaped outer track (7) is provided at the right end of the female convex ring (3), side openings (9) are provided at the right end of the female convex ring (3) and on both upper and lower sides of the ring-shaped outer track (7), a ring-shaped inner track (8) is provided at the left end of the inner side of the ring-shaped outer track (7), a male convex ring (6) is fixed on the outside of the connecting male head (4), two sliding guides are symmetrically fixed on the upper and lower sides of the left end of the male convex ring (6), and a male convex ring (6) is fixed on the outside of the connecting male head (4). The slide rod (13) is movably connected with the annular outer track (7) and the annular inner track (8); a side block (10) is fixed to the end of the slide rod (13); the side block (10) is movably connected with the side opening (9) and the annular inner track (8); a card bead (12) is elastically connected to one end of the side block (10) away from each other; a card hole (15) is formed at both the front and rear ends of the female convex ring (3); and the card bead (12) is plugged into the card hole (15).

2. A medical blood sampling connecting tube with stable connection according to claim 1, characterized in that: The female convex ring (3) and the male convex ring (6) are in close contact with each other as the female connector (2) and the male connector (4) are plugged into each other.

3. A medical blood sampling connecting tube with stable connection according to claim 2, characterized in that: The side opening (9) is in communication with the annular outer channel (7), and the side opening (9) is in communication with the annular inner channel (8).

4. A medical blood sampling connecting tube with stable connection according to claim 3, characterized in that: The diameter of the annular inner channel (8) is larger than the diameter of the annular outer channel (7).

5. A medical blood sampling connecting tube with stable connection according to claim 4, characterized in that: The slide bar (13) moves into the annular inner track (8) along the annular outer track (7), and the side block (10) moves into the annular inner track (8) along the side opening (9).

6. The medical blood sampling connecting tube with stable connection according to claim 1, characterized in that: A spring groove (11) is formed at one end of the side block (10) that is away from each other, the clamping bead (12) is located inside the spring groove (11), and a spring (14) is connected between the clamping bead (12) and the bottom of the spring groove (11).

7. The medical blood sampling connecting tube with stable connection according to claim 1, characterized in that: The connecting pipe body (1) is made of PBAT.

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