CN207613775U - A kind of arteria hemostix - Google Patents

Abstract

The utility model provides a kind of arteria hemostix, belongs to medical equipment technical field.It solves the problems such as existing arteria hemostix is complicated, parts are more, sealing effect is poor.This arteria hemostix, including syringe needle, needle tubing, syringe needle includes needle stalk and needle stand, needle stalk is through needle stand and is fixed on needle stand, the both ends of needle stalk are both provided with needle point, needle tubing includes cylinder and piston rod, the front end interference of cylinder is provided with sealing-plug, sealing-plug is made of elastic material, needle point, which penetrates in sealing-plug, makes cylinder fix and be detachably connected, sealing-plug can seal the pin hole that syringe needle leaves after syringe needle extraction, the front of cylinder is provided with sealing cover, sealing cover is connected by the outer wall of bent connect band and cylinder, sealing cover can be placed on the front end of cylinder and sealing, piston rod is inserted into from the rear end of cylinder, piston rod coordinates and can be slided along barrel lenght direction with cylinder inboard wall sealing.The utility model has many advantages, such as simple in structure, good using simplicity, sealing effect.

Description

an arterial blood collection device

technical field

The utility model belongs to the technical field of medical equipment, in particular to an arterial blood sampling device.

Background technique

Arterial blood sampling technology is one of the commonly used nursing operations in clinical work. Blood gas analysis is used to judge whether there is an acid-base balance disorder in the body, as well as the degree of hypoxia and hypoxia, especially for the judgment of respiratory system hypoxia and carbon dioxide retention. is an indispensable means. Clinically, arteries commonly used for arterial blood collection are mainly femoral artery, brachial artery, dorsalis pedis artery, and radial artery. The radial artery is the preferred site for clinical arterial blood collection.

At present, most arterial blood collection devices used clinically are syringes integrating blood collection container and blood collection needle. After the medical staff discharges the air bubbles in the blood sample, the needle tube needs to be sealed to prevent air from entering the needle tube and affecting the results of gas and blood analysis. In the rubber stopper, the needle is removed and the seat cap is screwed on to completely seal the needle tube. Therefore, the existing blood collection device includes a syringe, a rubber stopper and a seat cap, and there are many parts, and the rubber stopper and the seat cap are easy to fall off during transportation. affect the analysis results.

Utility model content

The purpose of this utility model is to provide an arterial blood sampling device with simple structure, easy to use and good sealing effect for the above-mentioned problems existing in the prior art.

The purpose of this utility model can be achieved through the following technical solutions: an arterial blood collection device, including a needle and a needle tube, characterized in that the needle includes a needle stem and a needle holder, and the needle stem runs through the needle holder and is fixed on the On the needle seat, both ends of the needle barrel are provided with needle points, the needle tube includes a cylinder and a piston rod, and a sealing plug is provided on the front end of the cylinder, and the sealing plug is made of elastic material , the needle point is pierced into the sealing plug to fix the cylinder and can be detachably connected, the sealing plug can seal the pinhole left by the needle after the needle is pulled out, and the front of the cylinder is provided with a sealing cover , the sealing cover is fixedly connected with the outer wall of the cylinder body through a bendable connecting band, the sealing cover can be covered and sealed at the front end of the cylinder body, and the piston rod is inserted from the rear end of the cylinder body, so The piston rod is in sealing fit with the inner wall of the cylinder and can slide along the length direction of the cylinder.

The working principle of the utility model: the medical personnel hold the blood collection device to puncture the patient's artery, collect the arterial blood into the cylinder by pulling the piston rod, pull out the needle after the blood collection, and check whether there are air bubbles in the blood sample. Discharge immediately, then separate the needle from the syringe, and seal the front end of the syringe with a sealing cap. Since the sealing plug is made of elastic material and has an interference connection with the barrel, the sealing plug is finally subjected to the inward pressure given by the inner wall of the barrel. When the needle is separated from the needle tube, the sealing plug will keep the needle under the action of pressure. The lower pinhole is sealed.

In the above-mentioned arterial blood collection device, the needle seat is also provided with a guide tube, the guide tube surrounds the outer wall of the needle tube, and the needle tube can be drawn out along the guide tube, and the guide tube A chute for the passage of the connecting belt is opened on the top.

In the above-mentioned arterial blood collection device, the front end of the chute is provided with a locking groove for the connecting belt to snap into, and the locking groove is perpendicular to the chute.

In the above-mentioned arterial blood sampling device, a sealing gasket is arranged inside the sealing cover.

In the above-mentioned arterial blood sampling device, the sealing cover has an outwardly protruding cover edge.

In the above-mentioned arterial blood sampling device, the cylinder body is made of transparent material.

In the above-mentioned arterial blood sampling device, the outer wall of the barrel is marked with scales.

In the above-mentioned arterial blood sampling device, the guide cylinder is made of transparent material.

In the aforementioned arterial blood collection device, a needle cap is sheathed on the outside of the needle stem at the front of the needle holder, and the needle cap is detachably connected to the needle holder.

Compared with the prior art, the utility model has the following advantages:

1. In the utility model, the needle tube is automatically sealed after the needle head and the needle tube are separated, and there is no need to tie the tube head on the rubber stopper, and the rubber stopper is eliminated.

2. The utility model directly connects the sealing cover to the outer wall of the cylinder body, which is convenient to cover the sealing cover and prevents the sealing cover from being lost.

3. The airtightness of the sealing plug in the utility model is good. If the sealing cap falls off accidentally, the air cannot enter the needle tube, which will not affect the analysis results and ensure the accuracy of gas and blood analysis.

4. The guide cylinder in the utility model can protect the connection part between the needle and the needle tube, prevent accidental breakage, and play a guiding role when the needle is separated from the needle tube, preventing the pinhole left by the needle from being too large and affecting the airtightness of the sealing cover .

5. The front end of the chute in this utility model is provided with a locking groove. When in use, the connecting belt is snapped into the locking groove to prevent the needle from being separated from the needle tube during the blood drawing process. When the needle and the needle tube need to be separated, the needle tube is rotated. The locked state can be released, which is convenient to use.

Description of drawings

Fig. 1 is the structural representation when blood collection of the utility model starts.

Fig. 2 is a schematic structural view of the utility model when blood collection is completed.

In the figure, 1. Needle head; 2. Needle tube; 3. Needle stem; 4. Needle seat; 5. Needle tip; 6. Cylinder body; 7. Piston rod; 8. Sealing plug; 11. Guide cylinder; 12. Chute; 13. Locking groove; 14. Cover edge; 15. Needle cap.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figures 1 and 2, the arterial blood collection device includes a needle 1 and a needle tube 2. The needle 1 includes a needle stem 3 and a needle holder 4. The needle stem 3 runs through the needle holder 4 and is fixed on the needle holder 4. The needle stem 3 Both ends of the needle tube 2 are provided with a needle point 5, the needle tube 2 includes a cylinder body 6 and a piston rod 7, and the front end of the cylinder body 6 is provided with a sealing plug 8, which is made of elastic material, and the needle point 5 is pierced into the sealing plug 8 The cylinder body 6 is fixed and detachably connected, and the sealing plug 8 can seal the pinhole left by the needle head 1 after the needle head 1 is pulled out. The connecting band 10 is fixedly connected with the outer wall of the cylinder body 6, the sealing cover 9 can be covered on the front end of the cylinder body 6 and sealed, the piston rod 7 is inserted from the rear end of the cylinder body 6, and the piston rod 7 is tightly matched with the inner wall of the cylinder body 6 and can be sealed. Slide along the length direction of cylinder body 6.

In further detail, the needle holder 4 is also provided with a guide cylinder 11, which surrounds the outer wall of the needle tube 2, and the needle tube 2 can be drawn out along the guide cylinder 11, and the guide cylinder 11 is provided with a hole for the connecting belt 10 to pass through. Chute 12. This setting can protect the connection between the needle 1 and the needle 1, prevent accidental breakage during use, and play a guiding role when the needle 1 and the needle tube 2 are separated, preventing the needle hole left by the needle 1 from being too large and affecting the sealing cover 9 air tightness.

In further detail, the front end of the sliding slot 12 is provided with a locking slot 13 for the connecting belt 10 to snap into, and the locking slot 13 is perpendicular to the sliding slot 12 . When in use, the connecting belt 10 snaps into the locking groove 13 to prevent the needle 1 from being separated from the needle tube 2 during the blood drawing process.

In order to make the sealing effect of the sealing cover 9 better, a sealing gasket is arranged inside the sealing cover 9 .

In order to make the sealing cover 9 put just to close and open, the sealing cover 9 has an outwardly protruding cover edge 14 .

In order to facilitate observation of the blood sample inside the needle tube 2, the cylinder body 6 is made of transparent material, the outer wall of the cylinder body 6 is marked with scales, and the guide cylinder 11 is made of transparent material.

In order to prevent the medical personnel from being scratched by the needle 1 , a needle cap 15 is sheathed on the outside of the needle barrel 3 at the front of the needle hub 4 , and the needle cap 15 is detachably connected to the needle hub 4 .

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses a lot of needles 1, needle tube 2, needle barrel 3, needle seat 4, needle point 5, cylinder body 6, piston rod 7, sealing plug 8, sealing cover 9, connecting belt 10, guide cylinder 11, chute 12. Terms such as locking groove 13, cover edge 14, needle cap 15, etc., but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (9)

1. An arterial blood collection device, comprising a needle (1), a needle tube (2), characterized in that, the needle (1) comprises a needle stem (3) and a needle holder (4), and the needle stem (3) ) penetrates the needle base (4) and is fixed on the needle base (4), the two ends of the needle barrel (3) are provided with needle points (5), and the needle tube (2) includes a cylinder (6) and a piston Rod (7), the front end of the cylinder (6) is provided with a sealing plug (8), the sealing plug (8) is made of elastic material, and the needle point (5) is pierced into the sealing plug ( In 8), the cylinder (6) is fixed and detachably connected, and the sealing plug (8) can seal the pinhole left by the needle (1) after the needle (1) is pulled out, and the cylinder (6) ) is provided with a sealing cover (9), and the sealing cover (9) is fixedly connected with the outer wall of the cylinder (6) through a bendable connecting band (10), and the sealing cover (9) can be The front end of the cylinder (6) is covered and sealed, and the piston rod (7) is inserted from the rear end of the cylinder (6), and the piston rod (7) is tightly matched with the inner wall of the cylinder (6) and can Slide along the length of the barrel (6). 2. An arterial blood collection device according to claim 1, characterized in that, the needle seat (4) is also provided with a guide tube (11), and the guide tube (11) surrounds the needle tube (2 ), and the needle tube (2) can be drawn out along the guide tube (11), and the guide tube (11) is provided with a chute (12) for the connecting belt (10) to pass through. 3. An arterial blood collection device according to claim 2, characterized in that, the front end of the chute (12) is provided with a locking groove (13) for the connecting belt (10) to snap into, and the The locking groove (13) is perpendicular to the chute (12). 4. The arterial blood drawer according to claim 1, characterized in that a sealing gasket is arranged inside the sealing cover (9). 5. The arterial blood drawer according to claim 1, characterized in that, the sealing cover (9) has an outwardly protruding cover edge (14). 6. The arterial blood sampling device according to claim 1, characterized in that, the cylinder (6) is made of transparent material. 7. An arterial blood sampling device according to claim 6, characterized in that, the outer wall of the cylinder (6) is marked with a scale. 8. The arterial blood sampling device according to claim 2, characterized in that, the guide cylinder (11) is made of transparent material. 9. A kind of arterial blood collection device according to claim 1, characterized in that, a needle cap (15) is sheathed on the outside of the needle stem (3) at the front part of the needle holder (4), and the needle cap ( 15) is detachably connected with the needle seat (4).