CN210095744U - Venous blood sampling device - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, and discloses a venous blood sampling device, which comprises a blood sampling component, a needle holder and a blood transfusion tube, wherein the blood transfusion tube is connected between the blood sampling component and the needle holder; meanwhile, when medical personnel take blood, the needle holder is held by hands, the rubber sleeve puncture needle is inserted into the test tube to take blood, blood exposure and needle stick injury are effectively avoided, the stress area of the needle holder can be increased, the strain of hand muscles of the medical personnel is reduced, the blood taking efficiency is further improved, and better doctor-patient experience is guaranteed.

Description

venous blood collection device

technical field

The utility model relates to the technical field of medical instruments, in particular to a venous blood collection device.

Background technique

The blood collection device is mainly used to collect venous blood samples from patients, and provide doctors with clinical diagnosis and treatment basis through blood sample analysis.

In clinical work, needlestick injuries related to blood collection are random and uncontrollable, and nursing staff are a high-risk group for needlestick injuries. Common needle stick injuries include needle stick injuries to the operator or other people after use, or improper handling of injection equipment, resulting in infection of the stab wounded people; moreover, the general blood collection device is directly connected to the blood vessel for puncture with a rubber sleeve. Needle, medical staff need to forcefully pierce the rubber-sleeved puncture needle into the test tube for blood collection, and the cap area of the test tube is small, which increases the risk of needle stick injuries and blood exposure for the operator during this operation. Small in size, on the one hand, it is not easy to grasp, and it is easy to cause the rubber sheathed puncture needle to be unable to be smoothly connected to the test tube. Lower, the doctor-patient experience is also lower.

Utility model content

The purpose of the utility model is to provide a venous blood collection device, which can not only avoid the harm of needle stick injury, but also reduce the strain on the hand muscles of medical staff and improve the efficiency of blood collection.

In order to solve the above problems, the present invention provides a venous blood collection device, which includes a blood collection assembly, a needle holder and a blood transfusion tube. The first end of the blood transfusion tube is connected to the blood collection assembly, and the blood collection assembly includes a needle tube, a first A needle seat and a blood sampling puncture needle, the blood sampling puncture needle is connected with the first needle seat through a connecting tube, and the connecting tube is located in the needle tube and can move along the needle tube toward the first needle seat, so The needle tube is provided with a limiting structure that restricts the movement of the connecting tube towards the blood collection puncture needle;

The second end of the blood transfusion vessel is provided with a second needle seat, the second needle seat is provided with a rubber sleeve puncture needle, the second needle seat is connected to the upper end of the needle holder, and the rubber sleeve punctures A needle is located within the needle holder.

Further, the needle holder has a cylindrical sleeve structure, and the size of the needle holder is larger than that of the second needle seat.

Further, the needle holder is detachably connected to the second needle seat.

Further, the upper end of the needle holder is provided with a threaded hole, and the second needle seat is provided with an external thread matching the threaded hole.

Further, the second end of the blood transfusion vessel is provided with a connector, and the second needle holder is provided with an inserting portion that can be inserted into the connector.

Further, the tail end of the needle tube is provided with a connecting portion, the connecting portion is provided with a clamping groove, and the first needle seat is provided with a buckle which is engaged with the clamping groove. The clip of the seat is fastened in the clip groove of the needle tube, and the blood sampling puncture needle is exposed outside the needle tube.

Further, the limiting structure includes an annular groove provided on the front end of the connecting pipe and an elastic clip provided on the connecting portion.

Further, the needle tube is provided with anti-skid fins.

Further, the front end of the needle tube is provided with a needle cannula.

The utility model provides a venous blood collection device, which comprises a blood collection component, a needle holder and a blood transfusion vessel. The blood transfusion vessel is connected between the blood collection unit and the needle holder. The needle is connected to the first needle seat through a connecting tube. The connecting tube is located in the needle tube. Before use, the blood collection puncture needle is exposed outside the needle tube. The medical staff uses the blood collection puncture needle to puncture the patient's vein for blood collection. After the blood collection is completed, push the first needle. The seat retracts, which drives the connecting tube and the blood collection puncture needle to move toward the first needle seat, so that the blood collection puncture needle retracts into the needle tube. Sliding out of the needle tube effectively avoids the hazard of needle stick injuries after use; at the same time, the rubber-sleeved puncture needle is connected to the needle holder through the second needle seat. To ensure smooth blood collection, the size of the needle holder is much larger than the rubber sleeve Puncture needle. When the medical staff collects blood, they hold the needle holder and insert the rubber-covered puncture needle into the test tube for blood collection, which can effectively avoid blood exposure and needle stick injuries, and the needle holder can increase the stress area and reduce the hand muscles of the medical staff. strain, thereby improving blood collection efficiency and ensuring a better doctor-patient experience.

Description of drawings

1 is a schematic structural diagram of a venous blood collection device in an embodiment of the present invention;

2 is a schematic structural diagram of the venous blood collection device after the blood collection puncture needle is retracted in the embodiment of the present utility model;

FIG. 3 is a partial enlarged schematic view of the position A in FIG. 2 .

In the figure, 1, blood collection assembly; 2, needle holder; 3, blood transfusion tube; 4, second needle seat; 5, rubber sheath puncture needle; 6, connector; 11. Needle tube; 12. First needle seat; 13. Blood collection puncture needle; 14. Connecting tube; 111. Connecting part; 121. Buckle.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to the present utility model. limits.

1 to 3 , a venous blood collection device according to an embodiment of the present invention is schematically shown, including a blood collection assembly 1 , a needle holder 2 and a transfusion vessel 3 , the first end of the transfusion vessel 3 and the blood collection assembly 1 For connection, the blood collection assembly 1 includes a needle tube 11, a first needle seat 12 and a blood collection puncture needle 13. The blood collection and puncture needle 13 is connected to the first needle seat 12 through a connecting tube 14. When the needle seat 12 moves in the direction, the needle tube 11 is provided with a limiting structure that restricts the movement of the connecting tube 14 towards the blood sampling puncture needle 13 , that is, the connecting tube 14 and the blood sampling puncture needle 13 on the connecting tube 14 can only move along the needle tube 11 toward the first A needle seat 12 is retracted into the needle tube 11 in the direction, and cannot move in the reverse direction along the needle tube 11. The blood collection puncture needle 13 is covered by the needle tube 11 to avoid the leakage of the blood collection puncture needle 13 and cause personal injury. There is a second needle seat 4 , the second needle seat 4 is provided with a rubber sleeve puncture needle 5 , the second needle seat 4 is connected to the upper end of the needle holder 2 and the rubber sleeve puncture needle 5 is located in the needle holder 2 .

Specifically, before using the venous blood collection device provided in this embodiment, the blood collection puncture needle 13 is exposed outside the needle tube 11, and the medical staff punctures the patient's vein with the blood collection puncture needle 13 to collect blood, and after the blood collection is completed, push the first needle seat 12 back to retract, drive the connecting tube 14 and the blood collection puncture needle 13 to move toward the first needle seat 12 so that the blood collection puncture needle 13 is retracted into the needle tube 11. The blood collection puncture needle 13 will not slip out of the needle tube 11, effectively avoiding the hazard of needle stick injury after use; at the same time, the rubber sleeve puncture needle 5 is connected to the needle holder 2 through the second needle seat 4, in order to ensure smooth blood collection , the size of the needle holder 2 is much larger than that of the rubber sleeve puncture needle 5, preferably, the needle holder 2 is set as a cylindrical sleeve structure, and the size of the needle holder 2 is much larger than the size of the second needle seat 4, and the medical staff collects blood When holding the needle holder 2, insert the rubber sheath puncture needle 5 into the test tube for blood collection, which can effectively avoid blood exposure and needle stick injuries, and the needle holder 2 can increase the stress area and reduce the hand muscle strain of medical staff. This improves blood collection efficiency and ensures a better doctor-patient experience.

Further, the needle holder 2 is detachably connected with the second needle base 4 to ensure the replaceability of the needle holder 2, since a small amount of blood will splash to the inner wall of the needle holder 2 when inserting and unplugging the test tube or culture bottle containing blood, When the number of blood collections reaches a certain amount, a certain amount of blood will remain attached to the inner wall of the needle holder 2, and a new needle holder 2 needs to be replaced to reduce blood exposure. Preferably, the upper end of the needle holder 2 is provided with a threaded hole, and the second needle base 4 is provided with an external thread matching the threaded hole. By screwing the external thread of the second needle holder 4 to the threaded hole of the needle holder 2 The detachable connection between the second needle seat 4 and the needle holder 2 can be realized, and the operation is simple and convenient. It should be noted that in this embodiment, the second needle seat 4 and the needle holder 2 can also be plugged or clamped. The effect of detachable connection can be achieved by means of connection, which is not specifically limited here.

Further, the second end of the blood transfusion vessel 3 is provided with a connector 6 , the second needle seat 4 is provided with a plug-in portion that can be inserted into the connector 6 , and the second needle seat 4 is inserted into the connector 6 through the connector 6 . In the second end of the blood transfusion tube 3, the rubber sheath puncture needle 5 on the second needle seat 4 can be replaced.

In this embodiment, the tail end of the needle tube 11 is provided with a connecting portion 111, the connecting portion 111 is provided with a clamping groove, and the first needle seat 12 is provided with a buckle 121 engaged with the clamping groove. The clip 121 is fastened in the clip slot of the needle tube 11, and the blood collection puncture needle 13 is exposed outside the needle tube 11. Before use, the first needle seat 12 and the needle tube 11 are connected by the clip slot clip 121. At this time, the blood collection puncture needle 13 is exposed outside the needle tube 11, which is convenient for puncturing the vein for blood collection. After the blood collection is completed, press the buckle 121 on the first needle seat 12 to unlock the first needle seat 12 and the needle tube 11, and push the first needle seat 12 to remove the blood collection puncture needle. 13 retracts into the needle tube 11, and is locked by the limiting structure to prevent the blood collection puncture needle 13 from moving out of the needle tube 11 and causing a needle stick injury. Generally, the buckles 121 are made of elastic material, and there are two elastic buckles 121. After pressing, under the action of elastic force, the blood sampling puncture needle 13 can be automatically retracted into the needle tube 11 to improve the blood sampling efficiency.

Further, the limiting structure includes an annular groove provided on the front end of the connecting tube 14 and an elastic clip provided on the connecting portion 111. When the blood collection puncture needle 13 is completely retracted to the needle tube 11, the needle tip of the blood collection puncture needle 13 is located in the needle tube. 11, the front end of the connecting tube 14 is located at the rear end of the needle tube 11. When the annular groove at the front end of the connecting tube 14 is retracted to the elastic clip of the needle tube 11, it is limited and clamped to prevent the connecting tube 14 from being trapped in the needle tube 11. slide.

In order to facilitate the medical staff to puncture the vein, the needle tube 11 is generally provided with anti-skid fins 7 , two anti-skid fins 7 are generally provided, and the two anti-skid fins 7 are symmetrically arranged on both sides of the needle tube 11 . When the venous blood collection device in this embodiment is not in use, the blood collection puncture needle 13 is exposed outside the needle tube 11. In order to reduce the contamination of the blood collection puncture needle 13, a needle cannula 8 is provided at the front end of the needle tube 11, and the needle tube 11 covers The needle tube 11 is movably inserted into the needle tube 11 and sleeved on the blood collection puncture needle 13. In specific use, the needle tube 11 sleeve is removed to expose the blood collection puncture needle 13 for blood collection operation.

To sum up, the present invention provides a venous blood collection device. Before use, the blood collection puncture needle 13 is exposed outside the needle tube 11, and the medical staff punctures the patient's vein with the blood collection puncture needle 13 to collect blood. The needle seat 12 is retracted, which drives the connecting tube 14 and the blood collection puncture needle 13 to move toward the first needle seat 12, so that the blood collection and puncture needle 13 is retracted into the needle tube 11. After the blood collection and puncture needle 13 is retracted into the needle tube 11, it passes through the limit structure. It is limited to ensure that the blood collection puncture needle 13 will not slip out of the needle tube 11, which effectively avoids the hazard of needle stick injury after use; In order to ensure smooth blood collection, the size of the needle holder 2 is much larger than that of the rubber sheathed puncture needle 5. When collecting blood, the medical staff should hold the needle holder 2 and insert the rubber sheathed puncture needle 5 into the test tube for blood collection, which can effectively avoid blood exposure and needle stick injuries. Moreover, the needle holder 2 can increase the force-bearing area, reduce the strain on the hand muscles of the medical staff, thereby improving the efficiency of blood collection and ensuring a better doctor-patient experience.

It should be understood that the terms "first", "second", etc. are used to describe various information in the present invention, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information without departing from the scope of the present invention.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and replacements can be made. These improvements And replacement should also be regarded as the protection scope of the present invention.

Claims (5)

1. A venous blood collection device, characterized in that it comprises a blood collection assembly, a needle holder and a transfusion vessel, the first end of the transfusion vessel is connected with the blood collection assembly, and the blood collection assembly comprises a needle tube, a first needle seat and A blood sampling puncture needle, the blood sampling puncture needle is connected to the first needle seat through a connecting tube, the connecting tube is located in the needle tube and can move along the needle tube toward the first needle seat, and the needle tube is inside the needle tube. There is a limit structure that restricts the movement of the connecting tube toward the direction of the blood sampling puncture needle; The second end of the blood transfusion vessel is provided with a second needle seat, the second needle seat is provided with a rubber sleeve puncture needle, the second needle seat is connected to the upper end of the needle holder, and the rubber sleeve punctures A needle is located within the needle holder. 2 . The venous blood collection device according to claim 1 , wherein the needle holder has a cylindrical sleeve structure, and the size of the needle holder is larger than that of the second needle seat. 3 . 3. The venous blood collection device according to claim 2, wherein the needle holder is detachably connected to the second needle seat. 4 . The venous blood collection device according to claim 3 , wherein the upper end of the needle holder is provided with a threaded hole, and the second needle seat is provided with an external thread matched with the threaded hole. 5 . 5 . The venous blood collection device according to claim 2 , wherein the second end of the blood transfusion vessel is provided with a connector, and the second needle seat is provided with a plug which can be inserted into the connector. 6 . connection.

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