Disposable external jugular vein puncture needle structure

Abstract

The utility model discloses a disposable external jugular vein puncture needle structure, which belongs to the technical field of medical instruments and comprises an indwelling needle outer tube, a safety valve, a first pipeline, a second pipeline, a precise infusion apparatus, a positive pressure device, a special blood transfusion interface, an indwelling needle body, a steel needle and an anti-reflux heparin cap. The remaining needle body is designed to be the needle head with the three inclined faces, the situation of needle pricking injury can be effectively prevented, the exposed pipe diameter is divided into the first pipeline and the second pipeline, the inner diameter of the first pipeline is 5 mm, and the length of the first pipeline is increased to 15 cm; the inner diameter of the second pipeline is 3mm, and the length of the second pipeline is 10cm; the fixator made of soft silica gel is designed on the indwelling needle outer tube and can be attached to the neck of a patient, pipeline slipping is prevented, and operation is easy and convenient. The design is more suitable for neck vein puncture, due to the fact that the blood vessel is thick, the design of the outer tube diameter of the puncture needle facilitates improvement of the flow speed, and application of the ICU patient external jugular vein puncture technology is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and provides a disposable external jugular vein puncture needle structure. Background Art

[0002] ICU patients are often in critical, severe and serious conditions, and require emergency treatment and medication upon admission. At the same time, most ICU patients are elderly, and the limb blood vessels are in poor condition, especially for patients with severe edema, which makes puncture difficult. The rapid establishment of temporary venous access is particularly important for ICU patients, and external jugular vein puncture is an important way to establish clinical access.

[0003] However, when using conventional indwelling needles to puncture the external jugular vein in clinical practice, it is found that the indwelling needle body is short in length, the exposed diameter is thin, and the process of sticking it to the patient's neck with fixing tape is very troublesome, making it inconvenient to quickly fix it. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a disposable external jugular vein puncture needle structure, which aims to solve the problem that when a conventional indwelling needle body is used clinically to puncture the external jugular vein, the indwelling needle body is short in length, the exposed tube diameter is thin, and the process of using the fixing tape to stick it to the patient's neck is very troublesome, making it inconvenient to quickly fix it.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] The utility model provides a disposable external jugular vein puncture needle structure, comprising an indwelling needle outer tube, a safety valve and a fixer, wherein a first pipeline and a second pipeline are arranged at one end of the indwelling needle outer tube, a precision infusion device and a positive pressure device are arranged on the first pipeline, a special blood transfusion interface is arranged at one end of the second pipeline, and a backflow prevention heparin cap is arranged on one end of the first pipeline and the special blood transfusion interface, an inlet isolation plug is arranged in the safety valve, an indwelling needle body is arranged on the safety valve, the indwelling needle body has three inclined surfaces, and the indwelling needle body, the first pipeline and the second pipeline are connected to each other, a steel needle is arranged in the indwelling needle body, the indwelling needle outer tube is connected to the safety valve and is located on the outside of the safety valve, the fixer comprises two fixing tapes and a fixing sheet, the two fixing tapes are respectively bonded to the fixing sheet and are located on the two end surfaces of the fixing sheet, the fixing sheet is fixedly connected to the indwelling needle outer tube and is sleeved on the indwelling needle outer tube.

[0007] Furthermore, the fixer also includes two anti-adhesion films, and the two anti-adhesion films are in contact with the corresponding fixing tapes respectively and are located on the fixing tapes.

[0008] Furthermore, the disposable external jugular vein puncture needle structure also includes a one-handed hemostatic clip and a sleeve body, wherein the one-handed hemostatic clip is arranged on the outer tube of the indwelling needle, and the sleeve body is detachably connected to the bevel needle head and sleeved on the bevel needle head.

[0009] Furthermore, the one-handed hemostatic clamp includes an elastic sheet and a fixing ring, the elastic sheet is fixedly connected to the fixing ring and is located on one side of the fixing ring, and the outer tube of the indwelling needle is located inside the elastic sheet, the fixing ring is fixedly connected to the outer tube of the indwelling needle and is sleeved on the outer tube of the indwelling needle, and is also located on one side of the fixer.

[0010] Furthermore, a first cavity and a second cavity are provided in the precision infusion device.

[0011] Furthermore, a filter is provided in the dedicated blood transfusion interface.

[0012] Furthermore, the anti-backflow heparin cap includes an anti-backflow valve, a Luer interface and a heparin cap body, the heparin cap body has an air hole at the bottom, the heparin cap has a spiral opening at the bottom, the anti-backflow valve is arranged in the heparin cap body, the Luer interface is connected to the heparin cap body and is located in the spiral opening.

[0013] The beneficial effects of the utility model are:

[0014] 1. A disposable external jugular vein puncture needle structure of the utility model increases the length of the indwelling needle body to 5cm, and designs the indwelling needle body to be a needle with three bevels, which can effectively prevent needle punctures. The exposed tube diameter is divided into the first pipeline and the second pipeline. The inner diameter of the first pipeline is 5mm, and the length is extended to 15cm; the inner diameter of the second pipeline is 3mm, and the length is 10cm. The precision infusion device is designed at the pipeline port of the first pipeline, which is convenient for blood transfusion; a soft silicone material fixer is designed on the outer tube of the indwelling needle, which can be attached to the patient's neck to prevent the pipeline from slipping, and the operation is simple and convenient; this design is more suitable for cervical vein puncture. Because the blood vessel is thicker, the outer diameter design of the puncture needle is convenient to increase the flow rate, which is in line with the application of external jugular vein puncture technology in ICU patients. This design can be used for external jugular vein puncture, so that the drug can be quickly diluted and enter the blood circulation after entering the blood vessel, greatly reducing the local stimulation to the blood vessel wall, and the retention time can be extended by more than 1 times the retention time of the superficial vein;

[0015] 2. The utility model provides a disposable external jugular vein puncture needle structure. The elastic sheet can be used to throttle the liquid in the outer tube of the indwelling needle, thereby controlling the amount of medicine or blood. The elastic sheet is made of steel sheet. The sleeve body can protect the indwelling needle body, thereby increasing the service life of the indwelling needle body and preventing the indwelling needle body from causing harm to people. The first cavity and the second cavity of the precision infusion device, the first cavity is used to transport the medicine, and the second cavity is used to prevent blood reflux; when the medicine in the medicine cavity of the infusion device is completely infused, the cavity for preventing blood reflux will immediately generate negative pressure to prevent blood from flowing back into the infusion tube, and the precision infusion device can also be equipped with a drip rate regulator and a filter, which can adjust the infusion speed as needed and filter out impurities and bubbles in the medicine, further improving the safety and reliability of the infusion. The anti-reflux heparin cap prevents blood reflux, reduces the number of punctures, establishes a long-term infusion route and prevents thrombosis.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 It is a three-dimensional stereogram of the first embodiment of the utility model.

[0019] Figure 2 It is a side view of the first embodiment of the utility model.

[0020] Figure 3 The utility model Figure 2 Section view along line AA.

[0021] Figure 4 The utility model Figure 3 A partial enlarged view of point B in the middle.

[0022] Figure 5 The utility model Figure 4 A partial enlarged view of point C in the middle.

[0023] Figure 6 It is a three-dimensional stereogram of the second embodiment of the utility model.

[0024] Figure numerals: 1 is the outer tube of the indwelling needle, 2 is the safety valve, 3 is the first pipeline, 4 is the second pipeline, 5 is the precision infusion set, 6 is the positive pressure device, 7 is the special interface for blood transfusion, 8 is the anti-backflow heparin cap, 9 is the indwelling needle body, 10 is the steel needle, 11 is the fixing tape, 12 is the fixing sheet, 13 is the anti-mucosal membrane, 14 is the elastic sheet, 15 is the sleeve body, and 16 is the fixing ring. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The first embodiment, as Figure 1 and Figure 5As shown, a disposable external jugular vein puncture needle structure of the utility model comprises an indwelling needle outer tube 1, a safety valve 2 and a fixer, one end of the indwelling needle outer tube 1 is provided with a first pipeline 3 and a second pipeline 4, the first pipeline 3 is provided with a precision infusion device 5 and a positive pressure device 6, one end of the second pipeline 4 is provided with a blood transfusion-specific interface 7, one end of the first pipeline 3 and the blood transfusion-specific interface 7 are provided with an anti-backflow heparin cap 8, an inlet isolation plug is provided in the safety valve 2, an indwelling needle body 9 is provided on the safety valve 2, the indwelling needle body 9 has three bevels, and the indwelling needle body 9, the first pipeline 3 and the second pipeline 4 are connected to each other, a steel needle 10 is provided in the indwelling needle body 9, the indwelling needle outer tube 1 is connected to the safety valve 2 and is located on the outside of the safety valve 2, by increasing the length of the indwelling needle body 9 to 5 cm, and designing the indwelling needle body 9 as a needle with three bevels, needle punctures can be effectively prevented. , the exposed diameter is divided into the first pipeline 3 and the second pipeline 4, the inner diameter of the first pipeline 3 is 5mm, and the length is extended to 15cm; the inner diameter of the second pipeline 4 is 3mm, and the length is 10cm. The precision infusion set 5 is designed at the pipeline port of the first pipeline 3 to facilitate blood transfusion; a soft silicone material fixer is designed on the outer tube 1 of the indwelling needle, which can be attached to the patient's neck to prevent the pipeline from slipping, and the operation is simple and convenient; this design is more suitable for cervical vein puncture. Because the blood vessel is thicker, the outer diameter design of the puncture needle is convenient to increase the flow rate, which is in line with the application of external jugular vein puncture technology in ICU patients, and can be used for external jugular vein puncture, so that the drug can be quickly diluted and enter the blood circulation after entering the blood vessel, greatly reducing the local stimulation of the blood vessel wall, and the retention time can reach more than 1 times the retention time of the superficial vein. The safety valve 2, the precision infusion set 5, the positive pressure device 6, the inlet isolation plug and the steel needle 10 are all prior art and will not be repeated here.

[0027] The fixator includes two fixing tapes 11 and a fixing plate 12. The two fixing tapes 11 are respectively bonded to the fixing plate 12 and are located at the two end surfaces of the fixing plate 12. The fixing plate 12 is fixedly connected to the outer tube 1 of the indwelling needle and is sleeved on the outer tube 1 of the indwelling needle. The fixing tape 11 can be directly pasted on the patient's neck to play a fixing role.

[0028] The fixer also includes two anti-sticking films 13, which are in contact with the corresponding fixing tapes 11 respectively and are located on the fixing tapes 11. The anti-sticking films 13 can be used to protect the unused adhesive surface of the fixing tapes 11, thereby preventing the fixing tapes 11 from losing their adhesive ability.

[0029] A single-wing needle holding handle is provided on the other outer side of the safety valve 2, and the single-wing needle holding handle can be used to facilitate the picking up of the safety valve 2 as a whole, thereby facilitating puncture.

[0030] The working / implementation / use principle of the utility model is: puncture is performed through the indwelling needle body 9, and after seeing the blood return, the steel needle 10 is withdrawn with one hand; after successful indwelling, the fixing tape 11 is used to fix the film to prevent the pipeline from slipping; if the patient needs to retain venous blood for emergency treatment, the syringe can be connected to the special connector for blood transfusion to draw back and retain, and then the saline positive pressure is used to flush the tube, and the infusion set or micro pump tube is connected to the thick tube diameter of the anti-backflow heparin cap 8 to give the patient medication; the reason why the indwelling needle body 9 has a thick tube diameter is that the flow rate can be accelerated and the adverse drug reactions caused by the patient's medication can be better observed.

[0031] The second embodiment, as Figure 6 As shown, based on the first embodiment, a disposable external jugular vein puncture needle structure of the utility model further includes a one-handed hemostatic clip and a sleeve body 15, wherein the one-handed hemostatic clip is arranged on the outer tube 1 of the indwelling needle, and the sleeve body 15 is detachably connected to the bevel needle head and sleeved on the bevel needle head. The one-handed hemostatic clip can be used to throttle the liquid in the outer tube 1 of the indwelling needle, thereby controlling the amount of medicine or blood. The sleeve body 15 can be used to protect the indwelling needle body 9, thereby increasing the service life of the indwelling needle body 9 while preventing the indwelling needle body 9 from causing harm to people.

[0032] The one-handed hemostatic clamp includes an elastic sheet 14 and a fixing ring 16, wherein the elastic sheet 14 is fixedly connected to the fixing ring 16 and is located on one side of the fixing ring 16, and the outer tube 1 of the indwelling needle is located inside the elastic sheet 14, and the fixing ring 16 is fixedly connected to the outer tube 1 of the indwelling needle and is sleeved on the outer tube 1 of the indwelling needle, and is also located on one side of the holder, and the elastic sheet 14 can be used to facilitate throttling of the liquid in the outer tube 1 of the indwelling needle, thereby controlling the amount of medicine or blood, and the elastic sheet 14 is made of steel sheet.

[0033] The precision infusion device 5 is provided with a first cavity and a second cavity. The first cavity and the second cavity of the precision infusion device 5 are used to transport the medicine through the first cavity, and the second cavity is used to prevent blood reflux. When the medicine in the medicine cavity of the infusion device is completely infused, the cavity for preventing blood reflux will immediately generate a negative pressure to prevent blood from flowing back into the infusion tube. The precision infusion device 5 can also be equipped with a drip rate regulator and a filter, which can adjust the infusion speed as needed and filter out impurities and bubbles in the medicine, further improving the safety and reliability of the infusion.

[0034] The dedicated blood transfusion interface 7 is provided with a filter screen, and the anti-backflow heparin cap 8 prevents blood from flowing back, reduces the number of punctures, establishes a long-term infusion route, and prevents thrombosis.

[0035] The anti-backflow heparin cap 8 includes an anti-backflow valve, a Luer interface and a heparin cap body. The heparin cap body has an air hole at the bottom, and the bottom of the heparin cap has a spiral opening. The anti-backflow valve is arranged in the heparin cap body, and the Luer interface is connected to the heparin cap body and is located in the spiral opening.

[0036] The working / implementation / use principle of the utility model is: the elastic sheet 14 can be used to throttle the liquid in the outer tube 1 of the indwelling needle, so as to control the amount of medicine or blood. The elastic sheet 14 is made of steel sheet. The sleeve body 15 can protect the indwelling needle body 9, so as to increase the service life of the indwelling needle body 9 and prevent the indwelling needle body 9 from causing harm to people. The first cavity and the second cavity of the precision infusion device 5, the first cavity is used to transport the medicine, and the second cavity is used to prevent blood reflux; when the medicine in the medicine cavity of the infusion device is finished, the cavity for preventing blood return will immediately generate negative pressure to prevent blood from flowing back into the infusion tube, and the precision infusion device 5 can also be equipped with a drip rate regulator and a filter, which can adjust the infusion speed as needed, and filter out impurities and bubbles in the medicine, further improving the safety and reliability of the infusion. The function of the anti-reflux heparin cap 8 is to prevent blood reflux, reduce the number of punctures, establish a long-term infusion route and prevent thrombosis.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A disposable external jugular vein puncture needle structure, comprising an indwelling needle outer tube and a safety valve, wherein a first pipeline and a second pipeline are arranged at one end of the indwelling needle outer tube, a precision infusion device and a positive pressure device are arranged on the first pipeline, a blood transfusion-specific interface is arranged at one end of the second pipeline, an anti-backflow heparin cap is arranged on one end of the first pipeline and the blood transfusion-specific interface, an inlet isolation plug is arranged in the safety valve, an indwelling needle body is arranged on the safety valve, the indwelling needle body has three inclined surfaces, and the indwelling needle body, the first pipeline and the second pipeline are connected to each other, a steel needle is arranged in the indwelling needle body, the indwelling needle outer tube is connected to the safety valve and is located on the outside of the safety valve, characterized in that: Also includes a retainer; The fixer comprises two fixing tapes and a fixing plate. The two fixing tapes are respectively bonded to the fixing plate and are located at both end surfaces of the fixing plate. The fixing plate is fixedly connected to the outer tube of the indwelling needle and is sleeved on the outer tube of the indwelling needle.

2. The disposable external jugular vein puncture needle structure according to claim 1, characterized in that: The fixer further comprises two anti-adhesion films, which are in contact with the corresponding fixing tapes respectively and are located on the fixing tapes.

3. The disposable external jugular vein puncture needle structure according to claim 2, characterized in that: A single-wing needle holding handle is arranged on the other outer side of the safety valve.

4. The disposable external jugular vein puncture needle structure according to claim 3, characterized in that: The disposable external jugular vein puncture needle structure also includes a one-hand hemostatic clip and a sleeve body. The one-hand hemostatic clip is arranged on the outer tube of the indwelling needle. The sleeve body is detachably connected to the bevel needle head and sleeved on the bevel needle head.

5. The disposable external jugular vein puncture needle structure according to claim 4, characterized in that: The one-handed hemostatic clamp includes an elastic sheet and a fixing ring, wherein the elastic sheet is fixedly connected to the fixing ring and is located on one side of the fixing ring, and the outer tube of the indwelling needle is located inside the elastic sheet, and the fixing ring is fixedly connected to the outer tube of the indwelling needle and is sleeved on the outer tube of the indwelling needle and is also located on one side of the fixer.

6. The disposable external jugular vein puncture needle structure according to claim 5, characterized in that: The precision infusion device is provided with a first cavity and a second cavity.

7. The disposable external jugular vein puncture needle structure according to claim 6, characterized in that: A filter is arranged in the dedicated blood transfusion interface.

8. The disposable external jugular vein puncture needle structure according to claim 7, characterized in that: The anti-backflow heparin cap includes an anti-backflow valve, a Luer interface and a heparin cap body. The heparin cap body has an air hole at the bottom, and the bottom of the heparin cap has a spiral opening. The anti-backflow valve is arranged in the heparin cap body, and the Luer interface is connected to the heparin cap body and is located in the spiral opening.

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