CN216417191U - A venous blood sample collection needle - Google Patents

Abstract

The utility model discloses a vein blood sample collection needle, including the vacuum blood sampling test tube, be responsible for the body and divide the body including blood sampling head, be responsible for the body and be connected with the blood sampling head, divide the body and be responsible for the body middle-end and be connected, it is connected with the connector to be responsible for body rear end, the connector is used for connecting the vacuum blood sampling test tube, be provided with control assembly on the connector, control assembly is used for controlling when the vacuum blood sampling test tube is not connected with the connector and is responsible for body and external intercommunication situation, it is connected with the butt joint that is used for connecting the cylinder to divide body rear end, the butt joint has to be provided with and hangs the cap. The utility model discloses a control assembly extracts the route of back dissection blood outflow at vacuum blood sampling test tube, avoids blood to cause the pollution to medical personnel.

Description

A venous blood sample collection needle

technical field

The utility model relates to the field of medical devices, in particular to a venous blood sample collection needle.

Background technique

At present, blood gas analyzers have been widely used in clinical practice, especially in the intensive care unit (ICU), and blood gas analysis plays an increasingly important role in the treatment of critically ill patients. Patients in the ICU usually need to collect blood in vacuum tubes and blood for blood gas analysis at the same time. The blood collection needle for clinical blood sample collection, the blood collection needle at the top is used to puncture the blood vessel, the transparent hose at the tail end is connected with the tail needle, the tail needle is wrapped by a rubber hose, and the needle cap is covered, which is used to pierce the vacuum blood collection test tube. The negative pressure in the test tube sucks the blood into the tube, but at the same time, when collecting blood gas for analysis, the medical staff no longer need to puncture the patient again, but after collecting the vacuum test tube, the back end of the punctured blood collection needle is taken out. Connect the blood gas needle to the bottom for blood collection, so that the medical staff who operate the operation are prone to needle stick injuries or touch the patient's blood.

Utility model content

The purpose of the utility model is to provide a venous blood sample collection needle, the utility model can prevent the blood from polluting the medical staff by cutting out the way of blood outflow after the control component is pulled out of the vacuum blood collection test tube.

In order to achieve the above purpose of the invention, the utility model adopts the following technical scheme: a venous blood sample collection needle, including a vacuum blood collection test tube, including a blood collection head, a main body and a branch body, the main body is connected with the blood collection head, and the branch pipe The main body is connected with the middle end of the main body, the rear end of the main body is connected with a connector, the connector is used to connect the vacuum blood collection test tube, and a control assembly is arranged on the connector, and the control assembly is used to control the vacuum blood collection. When the test tube is not connected with the connecting head and the main body is connected to the outside world, the rear end of the branch body is connected with a butt joint for connecting the syringe, and the butt joint is provided with a screw cap.

Preferably, the control assembly includes a butt groove and a connecting piece, the butt groove is provided on the connecting head, the bottom of the butt groove is provided with a butt column, the middle of the butt column is provided with a liquid outlet hole, and the side wall of the butt column is provided with There is a liquid inlet, the side wall of the docking groove is provided with a through hole, the side wall of the communication piece is provided with a channel to the inner wall, and the through hole and the liquid inlet are connected through the channel of the communication piece. It is arranged around the docking column, the bottom of the docking slot is provided with a reset slot around the docking column, the reset slot is provided with a reset piece, the connecting piece and the reset slot are both cylindrical, and the outer diameter of the connecting piece is larger than the reset slot. The outer diameter of the groove, when the vacuum blood collection test tube enters the docking groove and squeezes inward, the communicating piece moves inward and squeezes the reset piece, the communicating piece contacts the top of the reset groove, and the through hole and the liquid inlet are at this time. They are connected through the connecting piece, and the blood flows from the main body into the vacuum blood collection test tube; when the vacuum blood collection test tube is taken out, the reset piece is reset, and the connecting piece is lifted up. in the main body.

Preferably, a limiting protrusion is further provided on the side wall of the docking groove, the limiting protrusion is used to limit the position of the communicating piece to avoid falling out, and the inner diameter of the limiting protrusion is smaller than the outer diameter of the communicating piece.

Preferably, the side wall of the connecting piece is provided with a limit block, the side wall of the butt groove is provided with a limit slot, and the limit block is embedded in and moved along the limit slot.

Preferably, the restoring member is a spring.

Preferably, the blood sampling head is further provided with a hand-held portion.

Compared with the prior art, the venous blood sample collection needle using the above technical solution has the following beneficial effects:

1. Using the venous blood sample collection needle of the present invention, the vacuum blood collection test tube is pulled out through the control component to cut the blood outflow path, so as to avoid the infection of the blood of the tester to the medical staff during the extraction, thereby leading to the birth of medical accidents.

2. The blood collection needle is additionally equipped with a butt joint, which can be used for syringe insertion, and blood samples can be drawn directly from the butt joint of the blood collection needle, which is equivalent to only needing a single puncture of the blood collection needle to complete the test tube blood sample and syringe blood sample. Collection, reduce the number of punctures in patients, reduce pain, and slow down the resistance of patients.

3. In the preferred solution of the present utility model, the front end of the blood collection head is provided with a hand-held part, which makes it more convenient and safer for medical staff to collect blood.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the venous blood sample collection needle of the present invention.

FIG. 2 is a cross-sectional view of the inside of the connector when blood is collected in the embodiment.

3 is a cross-sectional view of the inside of the connector after the vacuum blood collection test tube is taken out after blood collection in the embodiment.

FIG. 4 is a cross-sectional view of the inside of the connector in the embodiment.

Reference numerals: 1. Blood sampling head; 10. Hand-held part; 2. Main body; 3. Branch body; 4. Connector; 40. Docking slot; 400, Docking column; 403, through hole; 404, reset slot; 405, limit protrusion; 406, limit slot; 5, connecting piece; 50, limit block; 51, channel; 6, reset piece; 7, butt joint.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

The venous blood sample collection needle shown in Figures 1 to 4 includes a vacuum blood collection test tube, and is characterized in that it includes a blood collection head 1, a main body 2 and a branch body 3, the main body 2 is connected to the blood collection head 1, and the branch pipe The body 3 is connected with the middle end of the main body 2, the rear end of the main body 2 is connected with a connector 4, the connector 4 is used to connect the vacuum blood collection tube, and the connector 4 is provided with a control assembly, the control The assembly is used to control the communication state between the main body 2 and the outside world when the vacuum blood collection test tube is not connected with the connector 4, the rear end of the branch body 3 is connected with a butt joint 7 for connecting the syringe, and the butt joint 7 is provided with Twist the cap.

The control assembly includes a docking slot 40 and a communication piece 5, the docking slot 40 is provided on the connecting head 4, a docking post 400 is provided at the bottom of the docking slot 40, and a liquid outlet hole 401 is provided in the middle of the docking post 400. The side wall of the docking column 400 is provided with a liquid inlet 402 , the side wall of the docking slot 40 is provided with a through hole 403 , and the side wall to the inner wall of the communicating member 5 is provided with a channel 51 , and the through hole 403 and the liquid inlet 402 are provided with a channel 51 . They are communicated with each other through the channel 51 of the communicating piece 5, the communicating piece 5 is arranged around the docking column 400, the bottom of the docking slot 40 is provided with a reset slot 404 around the docking column 400, and the reset slot 404 is provided with a reset piece 6 (The reset member 6 is a spring), the communicating member 5 and the reset groove 404 are both cylindrical, and the outer diameter of the communicating member 5 is larger than that of the reset groove 404 .

Limiting protrusions 405 are also provided on the side walls of the docking groove 40 . The limiting protrusions 405 are used to limit the position of the communicating piece 5 to avoid falling out. The inner diameter of the limiting protrusion 405 is smaller than the outer diameter of the communicating piece 5 .

A limit block 50 is provided on the side wall of the communication member 5 , and a limit slot 406 is provided on the side wall of the docking slot 40 , and the limit block 50 is embedded in and moved along the limit groove 406 .

The blood collection head 1 is also provided with a hand-held portion 10, which is convenient for the operator to hold, or use an adhesive tool such as an applicator to fix the blood collection head 1 on the surface of the patient's skin.

The butt joint 7 is provided with a screw cap, which mainly plays a protective role to prevent external dust from contaminating the butt joint 7. At the same time, the joint 7 adopts a structure similar to a positive pressure heparin cap, that is, when only the plastic cylindrical tube of the syringe is inserted, the butt joint 7 is inserted. 7 The channel can be opened so that the syringe can draw blood from the butt joint 7 .

The specific operation mode of the present utility model:

1. When the vacuum blood collection test tube enters the docking groove 40 and is squeezed inward, the communication member 5 moves inward and squeezes the reset member 6, and the communication member 5 contacts the top of the reset groove 404, and the through hole 403 and the The liquid inlets 402 are communicated through the communication piece 5, and the blood flows from the main body 2 into the vacuum blood collection test tube;

2. When the vacuum blood collection test tube is taken out, the reset member 6 is reset, and the communication member 5 is lifted up. At this time, the through hole 403 and the liquid inlet 402 are no longer connected, and the blood is cut off in the main body 2;

3. Unscrew the screw cap on the joint 7 on the branch body 3 to draw blood from the butt syringe.

The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, some modifications and improvements can be made without departing from the principles of the present invention. These should also be regarded as the protection of the present invention. scope.

Claims (6)

1. The utility model provides a vein blood sample collection needle, includes the vacuum blood sampling test tube, its characterized in that: including blood sampling head (1), be responsible for body (2) and be responsible for body (3), be responsible for body (2) and be connected with blood sampling head (1), be responsible for body (3) and be responsible for the body (2) middle-end and be connected, be responsible for body (2) rear end and be connected with connector (4), connector (4) are used for connecting vacuum blood sampling test tube, be provided with control assembly on connector (4), control assembly is used for controlling when vacuum blood sampling test tube is not connected with connector (4) and is responsible for body (2) and external intercommunication situation, be connected with butt joint (7) that are used for connecting the cylinder in branch body (3) rear end, butt joint (7) have and are provided with the spiral cap.

2. An intravenous blood sample collection needle according to claim 1, wherein: the control assembly comprises a butt joint groove (40) and a communicating piece (5), the butt joint groove (40) is arranged on the connector (4), a butt joint column (400) is arranged at the bottom of the butt joint groove (40), a liquid outlet hole (401) is formed in the middle of the butt joint column (400), a liquid inlet (402) is formed in the side wall of the butt joint column (400), a through hole (403) is formed in the side wall of the butt joint groove (40), a channel (51) is formed from the side wall to the inner wall of the communicating piece (5), the through hole (403) is communicated with the liquid inlet (402) through the channel (51) of the communicating piece (5), the communicating piece (5) is arranged around the butt joint column (400), a reset groove (404) is formed around the butt joint groove (40) at the bottom of the butt joint column (400), a reset piece (6) is arranged in the reset groove (404), and the communicating piece (5) and the reset groove (404) are cylinders, the outer diameter of the communicating piece (5) is larger than that of the reset groove (404),

-when the vacuum blood collection test tube enters the butt-joint groove (40) and is pressed inwards, the communicating piece (5) moves inwards and presses the resetting piece (6), the communicating piece (5) contacts the top of the resetting groove (404), the through hole (403) is communicated with the liquid inlet (402) through the communicating piece (5), and blood flows into the vacuum blood collection test tube from the main tube body (2);

-when the vacuum blood collection test tube is removed, the resetting member (6) is reset, the communicating member (5) is jacked up, the through hole (403) is no longer in communication with the inlet (402), and blood is cut off in the main tube (2).

3. An intravenous blood sample collection needle according to claim 2, wherein: still be provided with spacing arch (405) on butt joint groove (40) lateral wall, spacing arch (405) are used for restricting the position of communicating piece (5) and avoid falling out, the internal diameter of spacing arch (405) is less than the external diameter of communicating piece (5).

4. A venous blood sample collection needle according to claim 3, characterised in that: the side wall of the communicating piece (5) is provided with a limiting clamping block (50), the side wall of the butt joint groove (40) is provided with a limiting groove (406), and the limiting clamping block (50) is embedded into and moves along the limiting groove (406).

5. An intravenous blood sample collection needle according to claim 2, wherein: the reset piece (6) is a spring.

6. An intravenous blood sample collection needle according to claim 1, wherein: the blood sampling head (1) is also provided with a handheld part (10).

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