CN207898485U - Disposable children's vacuum blood collector - Google Patents

Abstract

The utility model discloses a disposable vacuum blood collection device for children, which relates to the field of blood sampling tools and mainly includes a blood collection component, a blood collection component and a vacuum blood collection tube. Needle, the rear end of the casing seat is a needle handle, the side wall of the casing is provided with a liquid outlet, the blood collection component includes a valve seat and a blood collection needle, a valve is arranged on the valve seat, heparin is placed in the valve, and the front end of the valve seat There is a liquid inlet, which is connected with the liquid outlet of the casing seat through a flexible tube, the blood collection needle is fixed at the rear end of the valve seat, and the nozzle of the vacuum blood collection tube is fixed with a rubber plug through the head cover to prevent Hemolysis and coagulation, the function of improving blood safety.

Description

Disposable Vacuum Blood Collector for Children

technical field

The utility model relates to a disposable vacuum blood sampling device for children, and mainly relates to the field of blood sampling tools.

Background technique

The vacuum blood collection device mainly includes a blood collection needle, a blood collection needle and a vacuum blood collection tube. The blood collection needle and the blood collection needle are connected by a flexible tube. hole, the blood automatically flows into the vacuum blood collection tube. At present, there is no vacuum blood collection device for children under 2 years old in clinical work, and scalp needles and syringes are used clinically. Since scalp needles and syringes are not special blood collection tools, they are easy to cause blood contamination during use. At the same time, there is no heparin in the syringe, and it is easy to cause blood coagulation and hemolysis after a long time. The blood vessel diameters of adults and children are quite different. If several vacuum blood collection tubes need to be collected, the blood collection needle needs to be taken out and reinserted. This will be a very scary thing for children.

Utility model content

Aiming at the above deficiencies in the prior art, the utility model proposes a disposable vacuum blood sampling device for children, which can prevent hemolysis and coagulation, and improve blood safety.

In order to achieve the above object, the technical solution of the utility model is: comprising a blood collection assembly, a blood collection assembly and a vacuum blood collection tube, the blood collection assembly includes a sleeve holder and a blood collection needle, the front end of the sleeve holder fixes the blood collection needle, the rear end of the sleeve holder The needle handle is provided with a liquid outlet on the side wall of the cannula. The blood collection component includes a valve seat and a blood collection needle. The valve seat is provided with a valve, and heparin is placed in the valve. The front end of the valve seat is provided with a liquid inlet. The liquid port is connected with the liquid outlet of the casing seat through a flexible pipe, the blood collection needle is fixed at the rear end of the valve seat, and a rubber plug is fixed at the nozzle of the vacuum blood collection tube through the head cover.

The technical principle of the utility model is as follows: adopt this scheme, insert the blood collection needle into the blood vessel, insert the blood collection needle into the pinhole blood collection tube, then open the valve, and use the negative pressure of the vacuum blood collection tube to collect blood into the vacuum blood collection tube. When one vacuum blood collection tube is collected, close the valve, and insert the blood collection needle into another vacuum blood collection tube.

The beneficial effects of the utility model are as follows: Since the valve is equipped with heparin in this scheme, when the blood enters the vacuum blood collection tube through the valve, the blood will take away the heparin located at the valve, and the heparin will be integrated into the blood, thereby reducing blood pollution , while preventing the risk of hemolysis and coagulation. Because the program is provided with a valve, it is not necessary to repeatedly take out the blood collection needle from the blood vessel, and only need to close the valve to change another vacuum blood collection tube to continue blood collection.

Further, the valve adopts a ball valve, and the ball valve includes a valve seat, a valve core and a rotary switch. The valve seat is provided with a valve cavity, and the valve cavity is provided with an adjustment channel through the side wall. The valve core is spherical, and the valve core is There is a liquid hole, the valve core is embedded in the valve cavity, the rotary switch is arranged on the elastic balloon outside the valve seat, and heparin is arranged in the elastic balloon, and the elastic ball and the valve core are fixed together through the connecting neck The connecting neck is provided with a throat connecting the inner cavity of the elastic balloon and the liquid passage hole of the valve core, and the connecting neck is embedded in the regulating channel. Utilizing the special working method of the ball valve, the ball valve is in the closed state when no blood collection is being performed. At this time, the valve cavity and the valve core will form a closed space between the liquid hole and the inner cavity of the elastic balloon, and the heparin is placed in the elastic balloon. The cavity can ensure that the heparin is not polluted by the outside world. When the blood is collected, the ball valve is opened, and the heparin is not directly integrated into the blood in the pipeline, because it is not necessary to add heparin at any time for blood collection, only when the blood circulation is not smooth When the elastic balloon is squeezed, the heparin in the elastic balloon enters into the blood through the throat, and can flexibly adjust whether to add heparin and how much heparin to add. The design of the scheme is ingenious and convenient for the protection and utilization of heparin.

Further, a sliding section is provided on the periphery of the rear end of the valve seat, and limit protrusions are provided at the front and rear of the sliding section. On the sliding section, a spring is sleeved on the sliding section at the front end of the protruding ring, and the two ends of the spring respectively abut against the limit protrusion and the protruding ring. The inner protective cover of the leather plug can slide outside the blood collection needle to expose the blood collection needle to the protective cover. Since the sliding section is equipped with a spring, the blood collection needle will return to the protective cover when there is no external force, thereby preventing blood collection The needle is outside to hurt people, and a leather plug is provided in the protective cover, so the blood collection needle can be sealed to prevent external pollution.

Further, the lancet cover is provided with a needle cover, which isolates the lancet and prevents people from being injured.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention For two of the new models, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative labor.

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a schematic structural diagram of a blood collection assembly according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of a vacuum blood collection tube.

Among them, 101-casing seat, 102-needle handle, 103-blood collection needle, 104-needle cover, 201-valve seat, 202-sliding section, 203-blood collection needle, 204-protective cover, 205-piston plug, 206 - valve core, 207 - heparin, 208 - elastic balloon, 301 - rubber stopper, 302 - vacuum blood collection tube, 303 - head cover.

Detailed ways

The technical solutions in the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only preferred embodiments of the utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example

As shown in Figure 1 , the utility model embodiment includes a blood collection assembly, a blood collection assembly and a vacuum blood collection tube. The blood collection assembly includes a sleeve holder 101 and a blood collection needle 103. A trocar is used, and the blood collection needle 103 is covered with a needle cover 104, which can isolate the blood collection needle 103 and avoid hurting people. When the blood medicine is used for blood collection, the protective cover 204 is removed, and the rear end of the sleeve seat 101 is a needle handle. 102, which is convenient for the nurse to hold the needle handle 102 and insert the blood collection needle 103 into the blood vessel. A liquid outlet is provided on the side wall of the casing, and the liquid outlet is used for connecting the blood collection component. The blood collection component includes a valve seat 201 and a blood collection needle 203. The valve adopts a ball valve, and the ball valve includes a valve seat, a valve core and a rotary switch. To adjust the channel, the valve core 206 is spherical, with a liquid outlet hole on the valve core. There is heparin 207, the elastic ball 208 and the valve core are fixed together through the connecting neck, a throat is provided in the connecting neck to communicate with the inner cavity of the elastic balloon 208 and the liquid passage hole of the valve core, and the connecting neck is embedded in the regulating channel Inside, the valve is closed before using the device, the valve core 206 and the valve cavity form a closed space between the liquid hole and the inner cavity of the elastic balloon, and the heparin 207 is located in the closed space of the inner cavity of the elastic balloon, so it can guarantee The purity of heparin 207, heparin 207 will not be polluted by the outside world. The front end of the valve seat 201 is provided with a liquid inlet, which is connected to the liquid outlet of the casing seat 101 through a hose, and the blood collection component and the blood collection component are connected by a hose and a hose, which can avoid the installation of the blood collection component. When vacuuming the blood collection tube, the blood collection needle 103 moves in the blood vessel. The back end of the valve seat 201 is fixed with a blood collection needle 203 , the nozzle of the vacuum blood collection tube is fixed with a rubber plug 301 through the head cover 303 , and the blood collection needle 203 is inserted into the vacuum blood collection tube 302 through the rubber plug 301 . The rear end periphery of the valve seat is provided with a sliding section 202, and the front and rear of the sliding section 202 are provided with limit protrusions. Fitted on the sliding section 202, a spring is sleeved on the sliding section 202 at the front end of the protruding ring, and the two ends of the spring are respectively against the limit protrusion and the protruding ring, and the right end of the protective cover is provided with a leather plug 205, which The needle point of the blood needle 203 is located in the leather plug 205 . When in use, slide the protective cover so that the blood collection needle 203 is exposed from the skin plug 205, then insert the blood collection needle 203 into the vacuum blood collection tube, open the valve, if the blood flow is not smooth, you can squeeze the elastic balloon, When the blood collection by the pinhole blood collection tube is finished, the valve is closed, and then the blood collection needle 203 is taken out. Under the action of the spring, the blood collection needle 203 will automatically retract in the protective cover, and then the blood collection needle is temporarily protected. To collect blood, the blood collection needle can be inserted into other vacuum blood collection tubes, and then the valve is opened for blood collection. Since the leather plug 205 is provided in the protective cover, the blood collection needle 203 can be sealed to prevent external pollution.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. Disposable vacuum blood collection device for children, comprising a blood collection assembly, a blood collection assembly and a vacuum blood collection tube, characterized in that the blood collection assembly includes a sleeve holder and a blood collection needle, the front end of the sleeve holder fixes the blood collection needle, the sleeve The rear end of the seat is a needle handle, the side wall of the sleeve is provided with a liquid outlet, the blood collection assembly includes a valve seat and a blood collection needle, the valve seat is provided with a valve, and heparin is placed in the valve, and the valve seat The front end of the valve seat is provided with a liquid inlet, which is connected to the liquid outlet of the sleeve seat through a hose, the blood collection needle is fixed at the rear end of the valve seat, and the nozzle of the vacuum blood collection tube is fixed with a rubber plug through the head cover . 2. The disposable vacuum blood collection device for children according to claim 1, characterized in that: the valve adopts a ball valve, the ball valve includes a valve seat, a valve core and a rotary switch, the valve seat is provided with a valve cavity, the valve cavity There is an adjustment channel through the side wall. The valve core is spherical, with a liquid hole on the valve core. The valve core is embedded in the valve cavity. The rotary switch is set on the elastic balloon outside the valve seat. There is heparin in the capsule, and the elastic balloon and the valve core are fixed together through the connecting neck, and the connecting neck is provided with a throat connecting the inner cavity of the elastic balloon and the liquid passage hole of the valve core, and the connecting neck is embedded in the regulating channel Inside. 3. The disposable vacuum blood collection device for children according to claim 2, characterized in that: a sliding section is provided on the periphery of the rear end of the valve seat, and limit protrusions are provided at the front and rear of the sliding section, and the blood collection needle has a Protective cover, the front end of the protective cover is provided with a protruding ring inwardly, and the protruding ring is movably fitted on the sliding section, and a spring is set on the sliding section at the front end of the protruding ring, and the two ends of the spring respectively abut against the limit The protrusion and the protrusion ring are provided with a leather plug in the right end of the protective cover, and the needle point of the blood collection needle is located in the skin plug. 4. The disposable vacuum blood collection device for children according to claim 1, characterized in that: the blood collection needle is covered with a needle cover.