Blood sampling device with double-cavity blood sampling needle

Abstract

The utility model provides a blood sampling device with a double-cavity blood sampling needle, and belongs to the technical field of blood sampling needles. The problems that an existing blood taking needle can only draw one tube or two tubes of blood at a time, and when more blood needs to be drawn, the blood taking needle needs to be replaced and the skin needs to be punctured again are solved. Comprising at least two double-cavity blood taking needles, one side of a shunting part of each double-cavity blood taking needle is communicated with a blood taking conveying pipe and a blood taking needle in sequence, the blood taking conveying pipe is communicated with two shunting channels in the shunting part, each shunting channel is communicated with a blood feeding hose and a blood feeding needle in sequence, and the shunting channels are connected with a shunting cavity at an opening of the shunting part. The bottom is connected with a spacer block through a spring, and the spacer block is provided with a blood feeding channel; the blood sampling device comprises at least two double-cavity blood sampling needles which are connected in sequence. One tube, two tubes or even multiple tubes of blood samples can be collected under the condition that the blood sampling needle is not repeatedly punctured, and the blood sampling needle does not need to be replaced; pain of a patient during blood sampling can be reduced, blood sampling difficulty is lowered, and only one-time puncture is needed.

Description

Technical Field

[0001] The utility model relates to the technical field of blood collection needles, in particular to a blood collection device containing a double-cavity blood collection needle. Background Art

[0002] Blood collection bottles and blood collection needles are commonly used tools in hospitals or other medical services. For example, a routine blood test requires piercing the patient's skin so that a blood sample can be collected for testing. Among the various blood collection devices, most blood collectors have a single needle and test tube, that is, a blood collection needle is connected to a test tube by a blood collection tube. For patients who need to undergo multiple routine blood tests, they may need to have multiple blood draws to test or preserve blood samples. Existing double-chamber blood collection needles can generally only collect two tubes of blood at the same time. When the amount to be collected increases or decreases, the blood collection needle needs to be replaced, the work efficiency is low, and the patient needs to collect blood multiple times. If the patient's vascular environment is poor, it increases the difficulty of blood collection and the blood collection efficiency is also low.

[0003] Existing double-chamber blood collection needles, such as a double-chamber blood collection device for blood testing (patent number: CN201320175400.7), include a blood collection needle, two blood collection tubes and two test tubes, wherein the blood collection needle has two built-in needle chambers, the end of each needle chamber is plugged and connected with a blood collection tube, the side wall of the test tube is provided with a slide groove, the two test tubes can be plugged and locked together by the slide groove, the plug-in connection between the needle chamber and the blood collection tube is provided with a needle body, one side of the needle body is provided with a push handle, and the blood collection needle, the needle body, and the push handle are integrally formed during manufacturing. During the blood collection process, two tubes of blood can be collected at the same time, but when only one tube or multiple tubes of blood need to be collected, the above device needs to be replaced and used again, or needs to be replaced with a single-tube blood collection device, which has poor flexibility and low work efficiency. Utility Model Content

[0004] The technical problems to be solved by the utility model are:

[0005] In order to solve the problem of low blood collection efficiency in existing disposable blood collection needles.

[0006] The utility model adopts the following technical solutions to solve the above technical problems:

[0007] The utility model provides a blood collection device containing a double-chamber blood collection needle, comprising at least two double-chamber blood collection needles, the outer diameter of the blood collection needle matches the inner diameter of the blood delivery needle, and the blood delivery needle of one double-chamber blood collection needle is connected to the blood collection needle of another double-chamber blood collection needle;

[0008] The double-lumen blood collection needle includes a shunt component, one side of the shunt component is connected to a blood collection and delivery tube, one end of the blood collection and delivery tube is connected to the blood collection needle, and the other end of the blood collection and delivery tube is connected to two shunt channels inside the shunt component, each shunt channel is connected to a blood delivery hose, and the blood delivery hose is connected to the blood delivery needle, and a shunt cavity is provided below the side of the shunt channel away from the blood collection and delivery tube, and the shunt cavity opens on the side wall of the shunt component, and the bottom of the shunt cavity is connected to a spacer block through a spring, and the spacer block is provided with a blood delivery channel. In the initial state, the blood delivery channel of the spacer block is in a closed state, and blood does not enter the blood delivery hose; in the blood collection state, the spacer block is pressed to move the spacer block into the blood delivery hose, so that the blood delivery channel of the spacer block is connected to the blood delivery hose, and then blood flows from the shunt channel through the blood delivery channel into the blood delivery hose.

[0009] Furthermore, a blood separation button is provided on a side of the spacer block away from the spring, and the blood separation button is connected to the spacer block via a button connecting rod.

[0010] Furthermore, the cross-sectional shapes of the blood separation button and the diversion cavity are both circular, elliptical or square.

[0011] Furthermore, a flow dividing block is provided at the bottom of the blood sampling and conveying tube, and the cross-sectional shape of the flow dividing block is a triangle.

[0012] Furthermore, the blood collection delivery tube is connected to the blood collection needle through a blood collection needle hose, and a wing is provided on the outer wall of the blood collection needle hose.

[0013] Furthermore, it also includes a blood collection needle protective shell, and the blood collection needle protective shell is detachably arranged outside the blood collection needle.

[0014] Furthermore, a blood feeding needle protective shell is disposed outside the blood feeding needle.

[0015] Furthermore, it also includes a pressing cover plate, which is a rectangular plate structure.

[0016] Furthermore, the length of the pressing cover plate is greater than the length of the two double-lumen blood collection needles after connection.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model discloses a blood sampling device containing a double-chamber blood collection needle, wherein one side of a shunt component is connected with a blood collection delivery tube and the blood collection needle in sequence, and the other end of the blood collection delivery tube is connected with two shunt channels inside the shunt component, and each shunt channel is connected with a blood delivery hose and the blood delivery needle in sequence, and a shunt cavity opened in the shunt component is provided on one side of the shunt channel away from the blood collection delivery tube, and a spacer block is connected with a spacer block at the bottom through a spring, and a blood delivery channel for blood delivery is provided on the spacer block; the blood sampling device comprises at least two double-chamber blood collection needles connected in sequence;

[0019] When collecting blood, a blood collection needle is inserted into the patient's blood vessel, and at least one blood collection tube with negative pressure is prepared according to the amount of blood to be collected. A blood delivery needle is inserted into the blood collection tube, and the spacer is pressed. Under the action of the negative pressure of the blood collection tube, blood enters the blood collection tube for blood collection. After the blood collection is completed, the spacer is released, and the blood no longer flows into the blood collection tube, and the blood collection tube can be removed. If multiple tubes of blood need to be collected, the blood delivery needle can be re-inserted into a new blood collection tube and the above operation can be repeated;

[0020] Compared with the existing double-chamber blood collection needle or blood collection device, it can collect one, two or even multiple blood samples without repeatedly puncturing the blood vessel, and there is no need to replace the blood collection needle, which has higher work efficiency;

[0021] For people with poor vascular environment, such as elderly patients or patients with thin blood vessels, multiple blood collections are not required, which can reduce the pain of blood collection for patients and reduce the difficulty of blood collection, as only one puncture is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a double-chamber blood collection needle in an embodiment of the utility model;

[0023] Figure 2 This is a front view of a double-chamber blood collection needle in an embodiment of the utility model;

[0024] Figure 3 A top cross-sectional view of a flow diversion component in an embodiment of the utility model;

[0025] Figure 4 This is a front cross-sectional view of the diversion component in the embodiment of the utility model;

[0026] Figure 5 It is a stereoscopic diagram of a blood collection device containing a double-chamber blood collection needle in an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. Blood collection needle; 2. Blood collection needle hose; 3. Wing; 4. Blood collection and delivery tube; 5. Diversion component; 6. Blood diversion button; 7. Blood delivery hose; 8. Blood delivery needle; 9. Blood collection needle protective shell; 10. Spring; 11. Diversion chamber; 12. Spacer block; 13. Blood delivery channel; 14. Button connecting rod; 15. Diversion channel; 16. Diversion spacer block. DETAILED DESCRIPTION

[0029] In the description of the present utility model, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", "back", "left", "right", etc., are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present utility model.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Specific implementation plan 1: Combine Figures 1 to 4 As shown, the utility model provides a double-chamber blood collection needle, which includes a shunt component 5, one side of the shunt component 5 is connected to a blood collection delivery tube 4, one end of the blood collection delivery tube 4 is connected to the blood collection needle 1, and the other end of the blood collection delivery tube 4 is connected to two shunt channels 15 inside the shunt component 5, each shunt channel 15 is connected to a blood delivery hose 7, and the blood delivery hose 7 is connected to the blood delivery needle 8. A shunt cavity 11 is opened below the side of the shunt channel 15 away from the blood collection delivery tube 4, and the shunt cavity 11 opens on the side wall of the shunt component 5. The bottom of the shunt chamber 11 is connected to a spacer block 12 through a spring 10. The spacer block 12 is provided with a blood delivery channel 13 for delivering blood. The blood delivery channel 13 is arranged parallel to the blood delivery hose 7. In the initial state, the blood delivery channel 13 of the spacer block 12 is in a closed state, and blood does not enter the blood delivery hose 7. In the blood collection state, the spacer block 12 is pressed to move the spacer block 12 into the blood delivery hose 7, so that the blood delivery channel 13 of the spacer block 12 is connected with the blood delivery hose 7, and then the blood flows from the shunt channel 15 through the blood delivery channel 13 and enters the blood delivery hose 7.

[0032] When collecting blood, the blood collection needle 1 is inserted into the patient's blood vessel, and at least one blood collection tube with negative pressure is prepared according to the amount of blood to be collected. A blood delivery needle 8 is inserted into the blood collection tube, and the spacer block 12 is pressed. Under the action of the negative pressure of the blood collection tube, the blood enters the blood collection tube to complete the blood collection. After the blood collection is completed, the spacer block 12 is released, and the blood no longer flows into the blood collection tube, and the blood collection tube can be removed; if multiple tubes of blood need to be collected, the blood delivery needle 8 can be reinserted into a new blood collection tube and the above operation can be repeated.

[0033] Compared with the existing double-chamber blood collection needle, one, two or even multiple blood samples can be collected without repeatedly piercing the blood vessel, and the blood collection needle 1 does not need to be replaced, so the work efficiency is higher;

[0034] For people with poor vascular environment, such as elderly patients or patients with thin blood vessels, multiple blood collections are not required, which can reduce the pain of blood collection for patients and reduce the difficulty of blood collection, as only one puncture is required.

[0035] Preferably, a blood separation button 6 is provided on a side of the spacer block 12 away from the spring 10 , and the blood separation button 6 is connected to the spacer block 12 via a button connecting rod 14 , so as to facilitate pressing the spacer block 12 .

[0036] Preferably, the cross-sectional shapes of the blood separation button 6 and the diversion cavity 11 are both circular, elliptical or square, the cross-sectional shape of the blood separation button 6 does not match the cross-sectional shape of the diversion cavity 11, and the blood separation button 6 cannot enter the diversion cavity 11.

[0037] Preferably, a diverter block 16 is provided at the bottom of the blood collection and delivery tube 4. The cross-sectional shape of the diverter block 16 is triangular, and is used to divert the blood entering the blood collection and delivery tube 4 through the diverter block 16 so that the blood enters the diverter channels 15 on both sides, thereby facilitating diversion.

[0038] Preferably, the blood collection delivery tube 4 is connected to the blood collection needle 1 via a blood collection needle hose 2 , and a wing 3 is provided on the outer wall of the blood collection needle hose 2 .

[0039] Preferably, a blood collection needle protective shell 9 is further included. The blood collection needle protective shell 9 is detachably arranged outside the blood collection needle 1, and the blood collection needle protective shell 9 is used to prevent the blood collection needle from accidentally stabbing the patient or medical staff.

[0040] Preferably, the blood feeding needle 8 is provided with a blood feeding needle protective shell to prevent the blood feeding needle 8 from accidentally stabbing the patient or medical staff, thereby playing a protective role.

[0041] Specific implementation plan 2: Combination Figure 5 As shown, the utility model provides a blood collection device containing a double-chamber blood collection needle, including at least two double-chamber blood collection needles, the outer diameter of the blood collection needle 1 matches the inner diameter of the blood delivery needle 8, and the blood delivery needle 8 of one double-chamber blood collection needle is connected to the blood collection needle 1 of another double-chamber blood collection needle. Other combinations and connection relationships of this embodiment are the same as those of the specific embodiment one.

[0042] When drawing blood, connect the blood delivery needle 8 at the end to the blood collection tube with negative pressure, insert the blood collection needle 1 into the patient's blood vessel, and press the blood separation button 6 through which the blood flows. This can realize the collection of blood from multiple tubes at the same time. After releasing the blood separation button 6, the blood collection is completed. The work efficiency is high, and the patient does not need to undergo multiple punctures for blood collection.

[0043] Preferably, it also includes a pressing cover plate, which is a rectangular plate structure and is used to place the pressing cover plate above the blood collection device when collecting multiple tubes of blood. A downward force is applied to the pressing cover plate to press all the blood separation buttons 6 at the same time.

[0044] Since patients generally do not need to collect too much blood samples, the number of double-chamber blood collection needles in each blood collection device is preferably three.

[0045] Preferably, the length of the pressing cover plate is greater than the length of the two double-lumen blood collection needles after connection.

[0046] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art of the utility model may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A blood collection device containing a double-chamber blood collection needle, comprising at least two double-chamber blood collection needles, characterized in that: The outer diameter of the blood collection needle (1) matches the inner diameter of the blood delivery needle (8), and the blood delivery needle (8) of one double-chamber blood collection needle is connected to the blood collection needle (1) of another double-chamber blood collection needle; The double-lumen blood collection needle comprises a shunt component (5), one side of the shunt component (5) is connected to a blood collection delivery tube (4), one end of the blood collection delivery tube (4) is connected to the blood collection needle (1), and the other end of the blood collection delivery tube (4) is connected to two shunt channels (15) inside the shunt component (5), each shunt channel (15) is connected to a blood delivery hose (7), and the blood delivery hose (7) is connected to the blood delivery needle (8), and a shunt cavity (11) is provided below the side of the shunt channel (15) away from the blood collection delivery tube (4), and the shunt cavity (11) is opened on the side wall of the shunt component (5). The bottom of the shunt chamber (11) is connected to a spacer block (12) via a spring (10), and the spacer block (12) is provided with a blood delivery channel (13). In an initial state, the blood delivery channel (13) of the spacer block (12) is in a closed state, and blood does not enter the blood delivery hose (7); in a blood sampling state, the spacer block (12) is pressed to move the spacer block (12) into the blood delivery hose (7), so that the blood delivery channel (13) of the spacer block (12) is connected to the blood delivery hose (7), and blood flows from the shunt channel (15) through the blood delivery channel (13) and enters the blood delivery hose (7). It also includes a pressing cover plate, which is a rectangular plate structure.

2. A blood collection device with a double-chamber blood collection needle according to claim 1, characterized in that: A blood separation button (6) is provided on the side of the spacer block (12) away from the spring (10), and the blood separation button (6) is connected to the spacer block (12) via a button connecting rod (14).

3. A blood collection device with a double-chamber blood collection needle according to claim 2, characterized in that: The cross-sectional shapes of the blood separation button (6) and the flow separation chamber (11) are both circular, elliptical or square.

4. A blood collection device with a double-chamber blood collection needle according to claim 2, characterized in that: A flow dividing block (16) is provided at the bottom of the blood sampling and conveying tube (4), and the cross-sectional shape of the flow dividing block (16) is triangular.

5. A blood collection device with a double-chamber blood collection needle according to claim 4, characterized in that: The blood collection conveying tube (4) is connected to the blood collection needle (1) via a blood collection needle hose (2), and a wing (3) is provided on the outer wall of the blood collection needle hose (2).

6. A blood collection device with a double-chamber blood collection needle according to claim 5, characterized in that: It also comprises a blood collection needle protective shell (9), and the blood collection needle protective shell (9) is detachably arranged outside the blood collection needle (1).

7. A blood collection device with a double-chamber blood collection needle according to claim 6, characterized in that: The blood delivery needle (8) is provided with a blood delivery needle protective shell.

8. A blood collection device with a double-chamber blood collection needle according to claim 7, characterized in that: The length of the pressing cover plate is greater than the length of the two double-chamber blood collection needles after being connected.

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