Disposable visible return blood collection needle

Abstract

The utility model relates to the technical field of blood taking needles, and discloses a disposable visible return blood collecting needle, which structurally comprises an upper needle seat, a lower needle seat, a butt joint end protective sleeve, a blood taking needle, a butt joint end needle tube and a vein puncture end needle tube. A clamping groove is formed in the middle of a single needle tube of the blood taking needle, the single needle tube is assembled with an upper needle base and a lower needle base to form a visible blood return window, the blood return condition can be observed during collection, the puncture accuracy rate can be conveniently judged, the blood taking needle with the blood return visible through the single needle is achieved, the upper needle base and the lower needle base are assembled with double needle tubes, a certain gap is reserved between the double needle tubes, and the visible blood return window is formed. The blood return condition can be conveniently observed during collection, the puncture accuracy can be conveniently judged, the blood return visible blood taking needle with the two needles is achieved, the single-needle-tube blood taking needle and the double-needle-tube blood taking needle are each of a thin-wall design, the flow of the blood taking needle can be high, and blood taking work can be more conveniently conducted on a patient.

Description

Technical Field

[0001] The utility model relates to the technical field of blood collection needles, in particular to a disposable visible blood return collection needle. Background Art

[0002] A disposable blood collection needle is usually used in conjunction with a disposable human venous blood sample vacuum collection container. The disposable blood collection needle mainly includes a blood collection needle and a puncture needle. The blood collection needle is connected to the puncture needle through a connecting component; the puncture needle penetrates the human venous blood sample vacuum collection container, connecting the collection container and the blood collection needle for blood collection;

[0003] Based on the above, the existing traditional disposable human venous blood sampling needle is invisible during blood collection, which will cause medical personnel to be unable to judge the accuracy of blood collection needle puncture by the blood return situation when collecting blood from patients, thereby reducing the efficiency of blood collection from patients. Utility Model Content

[0004] 1. Technical Problems to be Solved by the Utility Model

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a disposable visible blood return collection needle, which has the function of observing blood return from the blood collection needle during blood collection.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions.

[0008] The disposable visible blood return collection needle has a structure including an upper needle seat, a lower needle seat, a back cover, a docking end protective cover, a blood collection needle, a rubber cover, a docking end and a blood collection end. One side of the upper needle seat is connected to the lower needle seat, and the outer side of the upper needle seat is installed with a back cover. The blood collection needle is installed on the upper needle seat and the lower needle seat. The two ends of the blood collection needle are divided into a docking end and a blood collection end. A rubber cover is installed on the docking end, and the docking end protective cover is connected to the rubber cover.

[0009] As an optimization, the rubber sleeve and the back cover are protective sleeves made of elastic rubber material.

[0010] As an optimization, the lower needle seat includes a connecting hole, a sleeve groove and a card block. A connecting hole is opened inside the lower needle seat to allow the blood collection needle 5 to enter. The connecting hole runs through the lower needle seat. A sleeve groove is provided on the lower needle seat. The sleeve groove can be movably engaged with the rubber sleeve to install the rubber sleeve and the lower needle seat. There are several card blocks in a circular array at the end of the lower needle seat away from the sleeve groove.

[0011] As an optimization, a sleeve ring is provided at one end of the upper needle seat, and a through hole is provided inside the upper needle seat. The through hole is connected to the connecting hole of the lower needle seat and is on the same center line. The sleeve ring is movably engaged with the block on the lower needle seat.

[0012] As an optimization, a card slot is provided in the middle of the blood collection needle, and the card slot is assembled with the upper needle seat and the lower needle seat to form a visible blood return window.

[0013] As an optimization, the docking end and the blood collection end of the blood collection needle can respectively adopt a double-needle combination, with the docking end installed on the upper needle seat and the blood collection end installed on the lower needle seat.

[0014] As an optimization, the docking end and the blood collection end are not connected, and the upper and lower needle seats are assembled with the double needle tubes of the docking end and the blood collection end. A certain gap is left between the double needle tubes, and a visible blood return window is in the middle.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The disposable visible blood return collection needle of the utility model is made of stainless steel for both single-needle and double-needle blood collection needles. The thin-wall design and large inner diameter of the blood collection needle can make the blood collection needle have a high flow rate. The needle tip angle of the needle tube is precise, which is suitable for venous blood collection. It can make blood collection for patients more convenient and improve the efficiency of blood collection.

[0018] (2) The utility model is a disposable blood collection needle with visible blood return. By setting the collection needle into two usage modes, a single needle tube and a double needle tube, a card slot is opened in the middle of the single needle tube of the blood collection needle, which is assembled with the upper and lower needle seats to form a visible blood return window. The blood return situation can be observed during collection, which is convenient for judging the accuracy of puncture, and a single needle blood collection needle with visible blood return is realized.

[0019] (3) The utility model is a disposable visible blood return collection needle. By setting the collection needle into two usage modes, a single needle tube and a double needle tube, when the double needle tube of the blood collection needle is used, the upper needle seat and the lower needle seat are assembled with the double needle tube, and a certain gap is left in the middle to form a visible blood return window. It is convenient to observe the blood return during collection and to judge the accuracy of puncture, thus realizing a double needle visible blood return blood collection needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a disposable visible blood return collection needle of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the double-needle tube of the blood collection needle of the utility model;

[0022] Figure 3This is a schematic diagram of the installation structure of a single needle tube of the present utility model;

[0023] Figure 4 This is a schematic diagram of the installation of the double needle tube of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the lower needle seat of the present utility model;

[0025] Figure 6 This is a structural diagram of the upper needle seat of the present utility model;

[0026] Figure 7 This is a schematic diagram of the upper needle seat of the present invention;

[0027] Figure 8 This is an enlarged schematic diagram of the blood return window visible at A of the present invention.

[0028] The reference numerals in the figure are: upper needle seat-1, lower needle seat-2, rear cover-3, docking end protective cover-4, blood collection needle-5, rubber sleeve-6, docking end-7, blood collection end-8, connecting hole-21, sleeve groove-22, clamping block-23, sleeve ring-11, through hole-12, clamping groove-51. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1:

[0031] See also Figures 1-8 , a disposable visible blood return collection needle, whose structure includes an upper needle seat 1, a lower needle seat 2, a back cover 3, a docking end protective sleeve 4, a blood collection needle 5, a rubber sleeve 6, a docking end 7 and a blood collection end 8. One side of the upper needle seat 1 is connected to the lower needle seat 2, and the outer side of the upper needle seat 2 is installed with the back cover 3. The upper needle seat 1 and the lower needle seat 2 are installed with the blood collection needle 5. The two ends of the blood collection needle 5 are divided into a docking end 7 and a blood collection end 8. The docking end 7 is installed with a rubber sleeve 6, and the rubber sleeve 6 is sleeved with the docking end protective sleeve 4.

[0032] In this embodiment, the lower needle seat 2 can be used in conjunction with a needle holder.

[0033] In this embodiment, the butt-end protective cover 4 can wrap the rubber cover 6 to protect the rubber cover 6 and the butt-end 7 .

[0034] In this embodiment, the rubber sleeve 6 and the back cover 3 are protective sleeves made of elastic rubber material.

[0035] In this embodiment, the lower needle seat 2 includes a connecting hole 21, a sleeve groove 22 and a block 23. The interior of the lower needle seat 2 is provided with a connecting hole 21 for allowing the blood collection needle 5 to enter. The connecting hole 21 passes through the lower needle seat 2. The lower needle seat 2 is provided with a sleeve groove 22. The sleeve groove 22 can be movably engaged with the rubber sleeve 6 to install the rubber sleeve 6 and the lower needle seat 2. There are several blocks 23 in a circular array at one end of the lower needle seat 2 away from the sleeve groove 22.

[0036] In this embodiment, a sleeve ring 11 is provided at one end of the upper needle seat 1, and a through hole 12 is provided inside the upper needle seat 1. The through hole 12 is connected to the connecting hole 21 of the lower needle seat 2 and is located on the same center line. The sleeve ring 11 is movably engaged with the clamping block 23 on the lower needle seat 2, and the clamping block 23 can be used to make the engagement between the upper needle seat 1 and the lower needle seat 2 tighter.

[0037] In this embodiment, a card slot 51 is opened in the middle of the blood collection needle 5, and the card slot 51 is assembled with the upper needle seat 1 and the lower needle seat 2 to form a visible blood return window, so that the blood collection needle 5 can observe the blood return through the visible blood return window during blood collection, which is convenient for medical staff to judge the accuracy of puncture and realize a single-needle visible blood return blood collection needle.

[0038] In this embodiment, the upper needle seat 1 and the lower needle seat 2 are both made of transparent ABS material and are assembled with the blood collection needle 5. A slot 51 is opened in the middle of the needle tube, and there is a visible blood return window in the middle, which makes it convenient to observe whether the puncture and collection position is correct during blood collection.

[0039] Working principle: When a medical operator holds a disposable blood collection needle to draw blood from a patient's vein, he removes the butt-end protective cover 4 from the back cover 3 and connects it to the blood sample collection container through the rubber sleeve 6, so that the butt-end 7 can be inserted into the collection container. Then, he removes the back cover 3 on the blood collection end 8 and presses the needle head of the blood collection end 8 against the patient's limb and pierces the skin to cause minimal trauma. Venous blood is sucked into the vacuum blood collection tube through the blood collection needle 5 until the vacuum is balanced. Because there is pressure in the human blood vessels, even if the negative pressure in the vacuum blood collection tube is exhausted, the blood in the blood vessels will neither flow out nor be sucked in. The pressure in the blood vessels is discharged from the body, so the visible blood in the needle seat will not flow back into the patient's body.

[0040] When the blood collection is completed, the blood collection end 8 is pulled out. When the blood collection end 8 is pulled out, the cavity surrounded by the needle tube and the skin gradually increases, and then an instantaneous negative pressure is formed, which is conducive to the collection of blood samples. The rubber sleeve 6 of the docking end 7 is used in conjunction with a disposable vacuum venous blood sample collection container. The negative pressure formed by the rubber sleeve 6 and the collection container can discharge the collected blood into the collection container, thereby completing the human vein blood sample collection for use in blood analysis. During collection, the card slot 51 on the blood collection needle 5 is a visible blood return window, which can facilitate the judgment of the accuracy of puncture.

[0041] Example 2:

[0042] See also Figures 1-8 Compared with the first embodiment, the disposable visible blood return collection needle of the present invention further includes: the docking end 7 and the blood collection end 8 of the blood collection needle 5 can respectively adopt a double needle combination, the docking end 7 is installed on the upper needle seat 1, and the blood collection end 8 is installed on the lower needle seat 2.

[0043] In this embodiment, the docking end 7 and the blood collection end 8 are not connected, and the upper and lower needle seats are both made of transparent ABS material, and are assembled with the double needle tubes of the docking end 7 and the blood collection end 8. A certain gap is left between the double needle tubes, and a visible blood return window is in the middle, which is convenient for observing whether the puncture and collection position is correct during blood collection.

[0044] Working principle: When the medical operator holds the disposable blood collection needle to draw blood from the patient, he removes the butt end protective cover 4 from the back cover 3, and then connects the butt end 7 to the blood collection container through the rubber sleeve 6. At the same time, he removes the back cover 3 on the blood collection end 8, and then presses the needle head of the blood collection end 8 on the patient's limb and pierces the skin to cause minimal injury. When the blood collection is completed, the blood collection end 8 is removed;

[0045] When the blood collection end 8 is removed, the cavity enclosed by the needle tube and the skin gradually increases, and then forms an instantaneous negative pressure, which is conducive to the collection of blood samples. The docking end 7 is used in conjunction with a disposable vacuum venous blood sample collection container to collect blood samples from human veins for blood analysis. During collection, a visible blood return window with a certain gap between the double needle tube assembly of the docking end 7 and the blood collection end 8 can be used to easily judge the accuracy of the puncture.

[0046] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable visible blood return collection needle, comprising an upper needle seat (1) and a lower needle seat (2), wherein one side of the upper needle seat (1) is connected to the lower needle seat (2), and is characterized in that: A rear cover (3) is installed on the outer side of the upper needle seat (1), and a blood collection needle (5) is installed on the upper needle seat (1) and the lower needle seat (2). The two ends of the blood collection needle (5) are divided into a docking end (7) and a blood collection end (8). A rubber sleeve (6) is installed on the docking end (7), and a docking end protective sleeve (4) is sleeved on the rubber sleeve (6); A clamping slot (51) is provided in the middle of the blood collection needle (5), and the clamping slot (51) is assembled with the upper needle seat (1) and the lower needle seat (2) to form a visible blood return window.

2. The disposable visible blood return collection needle according to claim 1, characterized in that: The lower needle seat (2) comprises a connecting hole (21), a sleeve groove (22) provided on the lower needle seat (2), and a plurality of clamping blocks (23) installed at one end of the lower needle seat (2).

3. The disposable visible blood return collection needle according to claim 1, characterized in that: A sleeve ring (11) is provided at one end of the upper needle seat (1), a through hole (12) is provided inside the upper needle seat (1), the through hole (12) is connected to the connecting hole (21) of the lower needle seat (2) and is located on the same center line, and the sleeve ring (11) is movably engaged with a clamping block (23) on the lower needle seat (2).

4. The disposable visible blood return collection needle according to claim 1, characterized in that: The butt joint end (7) and the blood collection end (8) of the blood collection needle (5) can respectively adopt a double needle combination mode, the butt joint end (7) is installed on the upper needle seat (1), and the blood collection end (8) is installed on the lower needle seat (2). The butt joint end (7) and the blood collection end (8) are not connected, and the upper and lower needle seats are both made of transparent ABS material.

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