A hematology injection device

Abstract

The application provides a blood injection device, which comprises an injection cylinder and a push rod, the push rod is connected with a first piston and extends into the inner cavity of the injection cylinder, the front end of the injection cylinder is provided with a connecting end, the connecting end is provided with a through hole which is connected with the inner cavity, the inner wall of the through hole is provided with a ring of bosses, the cylindrical part of the circular part can extend into the inner ring of the bosses, the outer diameter of the connecting head is equal to the inner diameter of the through hole, the inner diameter of the connecting head is equal to the outer diameter of the cylindrical part, the cylindrical part corresponds to an injection connecting pipe, the outer diameter of the cylindrical part is equal to the outer diameter of the injection connecting pipe, the first piston is provided with a clamping groove which can be in interference fit with the circular part; when the connecting head extends into the through hole and abuts against the bosses, the injection connecting pipe pushes the cylindrical part to move so that the circular part is clamped into the clamping groove. According to the application, the connecting head extends into the through hole, the end of the injection connecting pipe in the connecting head pushes the cylindrical part to move during the extension process, and then the cylindrical part is clamped into the clamping groove, the whole process avoids the direct contact between the inner cavity and air, and can reduce the risk of infection.

Description

Technical Field

[0001] This invention relates to the medical field, specifically to a blood injection device. Background Technology

[0002] Syringes are a common medical device. As early as the 15th century, the Italian Cattinel proposed the principle of syringes, which mainly use needles to draw or inject gas or liquid. Syringes can also be used in medical devices and containers, such as some scientific instruments in chromatography that inject through a rubber diaphragm.

[0003] The hematology department mainly deals with various blood-related diseases, involving all aspects of the blood system, including blood system diseases, hemorrhagic diseases, hematopoietic system diseases, infectious diseases, and immune system diseases. The hematology department usually uses a lot of syringes, but due to environmental factors, the environmental requirements for the hematology department are higher, especially for some environments that require sterile operation. However, most of the time when drawing blood or injecting drugs, the syringe is often directly removed and exposed to the air. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a blood injection device that reduces air contact and improves injection quality, thereby addressing the above-mentioned shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hematology injection device, comprising an injection cylinder and a push rod, wherein the push rod is connected to a first piston and extends into the inner cavity of the injection cylinder, the front end of the injection cylinder is provided with a connecting end, the connecting end has a through hole communicating with the inner cavity, the inner wall of the through hole is provided with a ring of bosses, a cylinder connected to a circular component can extend into the inner ring of the bosses, one end of an injection connecting tube is connected to a needle, the other end of the injection connecting tube is fitted with a connector, the outer diameter of the connector is equal to the inner diameter of the through hole, the inner diameter of the connector is equal to the outer diameter of the cylinder, the cylinder corresponds to the injection connecting tube, the outer diameter of the cylinder is equal to the outer diameter of the injection connecting tube, the first piston is provided with a groove that can be interference-fitted with the circular component; when the connector extends into the through hole and abuts against the bosses, the injection connecting tube pushes the cylinder to move, causing the circular component to engage in the groove.

[0006] Furthermore, a first cap is fitted onto the connecting end to block the through hole, and a second cap is fitted onto the connecting head to block the injection connecting tube.

[0007] Furthermore, a portion of the outer wall of the connector is integrated into the injection connecting tube and integrally formed therewith. The end of the injection connecting tube extends into the perforation of the connector. The inner diameter of the perforation is equal to the outer diameter of the cylinder and greater than the inner diameter of the injection connecting tube. A sealing disc is placed inside the perforation. The sealing disc is provided with multiple latches. The cylinder is provided with a slot that can be engaged with the latches.

[0008] Furthermore, the blood injection device further includes a coil with a built-in power circuit, and a mating block that rotates in conjunction with the coil on the cylinder. The inner diameter of the coil is greater than or equal to the outer diameter of the injection cylinder.

[0009] Furthermore, the outer wall of the injection cylinder is provided with multiple blind holes, and the hand-held end connected to the tail of the push rod is connected to multiple connecting rods, with a second piston at the end of the connecting rod extending into the blind holes.

[0010] Furthermore, the injection connection tube is equipped with a speed regulator for controlling the injection speed.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention extends the connector into the through hole, and during the extension process, the end of the injection connecting tube inside the connector pushes the cylinder to move until it is locked into the slot. The whole process avoids direct contact between the inner cavity and air. Then, when in use, the needle directly connected to the injection connecting tube can directly draw or inject drugs or blood, etc. Moreover, since the operation is relatively simple, it does not actually add much trouble and can also reduce the risk of infection.

[0012] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a blood injection device.

[0014] Figure 2 This is a schematic diagram of the upper part of a hematology injection device.

[0015] Figure 3 This is a schematic diagram of the coil structure of a hematology injection device.

[0016] Figure 4 This is a schematic diagram of the injection connection tube structure of a hematology injection device. Detailed Implementation

[0017] To make the technical means, creative features, objectives, and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0018] This invention proposes a hematology injection device, comprising an injection cylinder 1 and a push rod 2. The push rod 2 is connected to a first piston 3 and extends into an inner cavity 4 of the injection cylinder 1. The front end of the injection cylinder 1 is provided with a connecting end 5, which has a through hole communicating with the inner cavity 4. The inner wall of the through hole is provided with a ring of bosses 6. A cylindrical part 8 connected to a circular part 7 can extend into the inner ring of the bosses 6. One end of an injection connecting tube 10 is connected to a needle 12, and the other end of the injection connecting tube 10 is fitted with a connector 9. The outer diameter of the connector 9 is equal to the inner diameter of the through hole, and the inner diameter of the connector 9 is equal to the inner diameter of the through hole. The outer diameter of the cylinder 8 is equal to the outer diameter of the injection connecting tube 10. The first piston 3 is provided with a groove 11 that can be interference-fitted with the circular part 7. When the connector 9 extends into the through hole and abuts against the boss 6, the injection connecting tube 10 pushes the cylinder 8 to move so that the circular part 7 is engaged in the groove 11. The circular part 7 is located between the piston and the boss 6. The groove 11 corresponds to the connecting end 5. The inner diameter of the groove 11 is 0 cm to 0.1 cm larger than the outer diameter of the circular part 7.

[0019] A first cap 13 is fitted onto the connecting end 5 to block the through hole, and a second cap 14 is fitted onto the connecting head 9 to block the injection connecting tube 10. Before use, the first cap 13 and the second cap 14 are removed to further reduce the risk of airborne transmission.

[0020] A portion of the outer wall of the connector 9 is integrated into the injection connector 10 and integrally formed therewith. The end of the injection connector 10 extends into the through hole of the connector 9. The inner diameter of the through hole is equal to the outer diameter of the cylinder 8 and greater than the inner diameter of the injection connector 10. A sealing disc 15 is placed inside the through hole. The sealing disc 15 is provided with multiple latches 16. The cylinder 8 is provided with slots that can be engaged with the latches 16. When the connector 9 extends into the through hole, the latches 16 are engaged with the slots, and the sealing disc 15 is fixed on the cylinder 8, thereby reducing the time when the inside of the injection connector 10 is exposed to air.

[0021] The hematology injection device further includes a coil 19 with a built-in power line 20. A mating block 18, which rotates in conjunction with the coil 19, is provided on the cylinder 8. The inner diameter of the coil 19 is greater than or equal to the outer diameter of the injection cylinder 1. The coil 19 and the mating block 18 utilize the principle of an existing electric motor. When the coil 19 is energized, it generates a magnetic field, thereby driving the mating block 18 to rotate. The rotating mating block 18 stirs the mixed medication drawn into the inner cavity 4. When the user needs to inject different medications and requires further mixing, the coil 19, in conjunction with the mating block 18, drives the stirring. The mating block 18 is an iron block or a magnetic block. A T-shaped member 17 is connected to the cylinder 8, which is movably connected to the circular member 7. The circular member 7 has a T-shaped groove that matches the T-shaped member 17. The T-shaped member 17 is located within the T-shaped groove, allowing the cylinder 8 to rotate on the circular member 7.

[0022] To reduce the need for manual pushing during drug injection, the outer wall of the injection cylinder 1 is provided with multiple blind holes 23. The handheld end 22 connected to the tail of the push rod 2 is connected to multiple connecting rods 21. The second piston at the end of the connecting rod 21 extends into the blind hole 23. When the first piston 3 is pulled by the push rod 2 to draw out the drug, the second piston is pulled from the innermost side of the blind hole 23 to the outside, thereby creating a vacuum between the blind hole 23 and the second piston and generating a pulling force. The injection connecting tube 10 is provided with a speed regulator for controlling the injection speed. When the speed regulator 24 of the prior art is turned on, it is only necessary to gently push the handheld end 22 to make it easier to push the drug located between the first piston 3 and the inner wall of the inner cavity 4 under the action of the pulling force. The speed regulator 24 can control the infusion or injection flow rate, which is the prior art, such as a flow rate regulator.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A hematology injection device, characterized in that: The syringe includes an injection barrel (1) and a push rod (2). The push rod (2) is connected to a first piston (3) and extends into the inner cavity (4) of the injection barrel (1). The front end of the injection barrel (1) is provided with a connecting end (5). The connecting end (5) has a through hole that communicates with the inner cavity (4). The inner wall of the through hole is provided with a boss (6). A cylindrical part (8) connected to a circular part (7) can extend into the inner ring of the boss (6). One end of the injection connecting tube (10) is connected to a needle (12), and the other end of the injection connecting tube (10) is fitted with a connector (9). The outer diameter of the head (9) is equal to the inner diameter of the through hole, the inner diameter of the connector (9) is equal to the outer diameter of the cylinder (8), the cylinder (8) corresponds to the injection connecting tube (10), the outer diameter of the cylinder (8) is equal to the outer diameter of the injection connecting tube (10), and the first piston (3) is provided with a groove (11) that can be interference-fitted with the circular part (7); when the connector (9) extends into the through hole and abuts against the boss (6), the injection connecting tube (10) pushes the cylinder (8) to move so that the circular part (7) is inserted into the groove (11).

2. The hematology injection device according to claim 1, characterized in that: The first cover (13) is fitted onto the connecting end (5) to block the through hole, and the second cover (14) is fitted onto the connecting head (9) to block the injection connecting tube (10).

3. The hematology injection device according to claim 1, characterized in that: A portion of the outer wall of the connector (9) is integrated into the injection connector tube (10) and integrally formed therewith. The end of the injection connector tube (10) extends into the perforation of the connector (9). The inner diameter of the perforation is equal to the outer diameter of the cylinder (8) and greater than the inner diameter of the injection connector tube (10). A sealing disc (15) is placed inside the perforation. The sealing disc (15) is provided with multiple latches (16). The cylinder (8) is provided with a slot that can be inserted into the latches (16).

4. The hematology injection device according to claim 1, characterized in that: The blood injection device further includes a coil (19), which has a built-in power line (20). The cylinder (8) is provided with a mating block (18) that rotates in conjunction with the coil (19). The inner diameter of the coil (19) is greater than or equal to the outer diameter of the injection cylinder (1). The cylinder (8) is movably connected to the circular part (7).

5. The hematology injection device according to claim 1, characterized in that: The outer wall of the injection cylinder (1) is provided with multiple blind holes (23), and the hand-held end (22) connected to the tail of the push rod (2) is connected to multiple connecting rods (21). The second piston provided at the end of the connecting rod (21) extends into the blind hole (23).

6. The hematology injection device according to claim 1, characterized in that: The injection connection tube (10) is equipped with a speed regulator for controlling the injection speed.

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