Puncture device

Abstract

The utility model discloses a puncture device which comprises a needle cylinder, a liquid collecting bottle is arranged on one side of the needle cylinder, a needle body is arranged on one side of the liquid collecting bottle, a first catheter and a second catheter are fixed and communicated on the liquid collecting bottle, one end of the needle cylinder is fixed and communicated with a cylinder cap, the first catheter is inserted into the cylinder cap, and one end of the needle body is fixed and communicated with a needle cap. The second catheter is inserted into the needle cap, and an exhaust pipe is fixed and communicated with the outer side of the needle cylinder. The piston rod is pulled to drive the piston to move, negative pressure is formed in the needle cylinder when the piston moves, at the moment, the second sealing plug blocks the second air hole, and when the first sealing plug does not block the first air hole any more, air in the needle body and the liquid collecting bottle is pumped into the needle cylinder, so that pleural effusion, ascites, pericardial effusion, pleural dialysis liquid and the like are pumped into the liquid collecting bottle, and the liquid collecting effect is achieved. And the liquid cannot directly enter the needle cylinder, namely, the needle cylinder cannot be polluted, so that the needle cylinder can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture devices, in particular to a puncture device. Background Art

[0002] The puncture device is usually used for puncture and extraction of the heart, lungs, chest cavity and peritoneum. It can be used to extract sterile fluids such as blood, pleural effusion, ascites, pericardial effusion, pleural dialysis fluid, etc. The puncture device usually consists of a hollow needle and a syringe connected to the needle.

[0003] When the puncture device in the prior art is in use, the piston is moved by pulling the piston rod, so that negative pressure is formed in the syringe, and then blood, pleural effusion, ascites, pericardial effusion, pleural dialysis fluid and other liquids are drawn into the syringe. Sometimes when these liquids are tested, the liquid in the syringe needs to be injected into a container for inspection. The process is cumbersome, and the liquid entering the syringe will contaminate the syringe. The piston in the syringe will be damaged again during cleaning, disinfection, and high-temperature drying, which affects its service life. Therefore, most syringes are disposable, resulting in a waste of resources. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In view of this, the purpose of the utility model is to propose a puncture device, the technical problem to be solved is that liquid entering the syringe will cause contamination to the syringe, and the piston in the syringe will be damaged again during cleaning, disinfection and high-temperature drying, affecting its service life. Therefore, most syringes are disposable, resulting in a waste of resources.

[0006] (II) Technical solution

[0007] In order to achieve the above technical purpose, the utility model provides a puncture device:

[0008] It includes a syringe, a liquid collecting bottle is arranged on one side of the syringe, a needle body is arranged on one side of the liquid collecting bottle, a first conduit and a second conduit are fixed on and connected to the liquid collecting bottle, a barrel cap is fixed at one end of the syringe and connected to the barrel cap, the first conduit is inserted into the barrel cap, one end of the needle body is fixed and connected to the needle cap, the second conduit is inserted into the needle cap, an exhaust pipe is fixed at the outside of the syringe and connected to the exhaust pipe, an air intake component for discharging the gas in the liquid collecting bottle into the syringe is arranged in the syringe, and an exhaust component for discharging the gas in the syringe to the outside is arranged in the exhaust pipe.

[0009] Preferably, a piston is sealingly and slidably connected inside the syringe, a piston rod is fixed to a side of the piston away from the liquid collection bottle, and sealing covers are provided on the outer sides of the first conduit and the second conduit.

[0010] Preferably, the air intake assembly includes a first baffle fixed in the syringe, and a plurality of first air holes are formed in the first baffle.

[0011] Preferably, two first connecting rods are sealingly and slidably connected inside the first baffle, and a first movable plate is commonly fixed to one end of the two first connecting rods close to the piston, and a plurality of first sealing plugs for blocking the corresponding first air holes are fixed to one side of the first movable plate close to the first baffle.

[0012] Preferably, the first connecting plate is fixed to one end of the two first connecting rods away from the first movable plate, and a first spring is sleeved on the outer side of the first connecting rod, one end of the first spring abuts against the first baffle plate, and the other end of the first spring abuts against the first connecting plate.

[0013] Preferably, the exhaust assembly includes a second baffle fixed in the exhaust pipe, and a plurality of second air holes are formed in the second baffle.

[0014] Preferably, two second connecting rods are sealingly and slidably connected inside the second baffle, and a second movable plate is commonly fixed to one end of the two second connecting rods away from the syringe, and a plurality of second sealing plugs for blocking the corresponding second air holes are fixed to one side of the second movable plate close to the second baffle.

[0015] Preferably, the two second connecting rods have one end away from the second movable plate and are commonly fixed with a second connecting plate, and a second spring is sleeved on the outside of the second connecting rod, one end of the second spring abuts against the second baffle plate, and the other end of the second spring abuts against the second connecting plate.

[0016] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0017] 1: Pull the piston rod to drive the piston to move. When the piston moves, negative pressure is formed in the syringe. At this time, the second sealing plug blocks the second air hole, and the first sealing plug no longer blocks the first air hole, so that the gas in the needle body and the fluid collection bottle is drawn into the syringe, so that pleural effusion, ascites, pericardial effusion, pleural dialysis fluid, etc. are drawn into the fluid collection bottle, and these liquids will not directly enter the syringe, that is, the syringe will not be contaminated, so that the syringe can be reused.

[0018] 2: When a large-capacity liquid collection bottle is used to collect liquid, and the negative pressure volume formed by a single pull is much smaller than the accumulated fluid in the patient's body, the accumulated fluid in the patient's body is diverted into the liquid collection bottle through multiple negative pressures by reciprocating the piston. When the piston is moved toward the liquid collection bottle, the gas in the syringe is discharged from the exhaust pipe to prevent the gas in the syringe from being discharged into the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a puncture device provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of the liquid collecting bottle provided by the utility model;

[0022] Figure 3 A front view partial structural cross-sectional view of a puncture device provided by the utility model;

[0023] Figure 4 The utility model provides Figure 3 The structural diagram at A in the middle;

[0024] Figure 5 The utility model provides Figure 3 Schematic diagram of the structure at B in the figure.

[0025] Description of the drawings: 1. syringe; 2. liquid collecting bottle; 3. first conduit; 4. second conduit; 5. needle body; 6. cylinder cap; 7. needle cap; 8. exhaust pipe; 9. sealing cover; 10. piston rod; 11. piston; 12. first baffle; 13. first air hole; 14. first movable plate; 15. first sealing plug; 16. first connecting rod; 17. first connecting plate; 18. first spring; 19. second baffle; 20. second air hole; 21. second movable plate; 22. second connecting rod; 23. second sealing plug; 24. second spring; 25. second connecting plate. DETAILED DESCRIPTION

[0026] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0027] Reference Figure 1-5 :

[0028] A puncture device provided by the utility model comprises a syringe 1, a liquid collecting bottle 2 is arranged on one side of the syringe 1, a needle body 5 is arranged on one side of the liquid collecting bottle 2, a first conduit 3 and a second conduit 4 are fixed and connected to the liquid collecting bottle 2, a tube cap 6 is fixed and connected to one end of the syringe 1, the first conduit 3 is inserted into the tube cap 6, one end of the needle body 5 is fixed and connected to the needle cap 7, the second conduit 4 is inserted into the needle cap 7, an exhaust pipe 8 is fixed and connected to the outside of the syringe 1, a piston 11 is sealingly and slidably connected in the syringe 1, a piston rod 10 is fixed on the side of the piston 11 away from the liquid collecting bottle 2, a sealing cover 9 is arranged on the outside of the first conduit 3 and the second conduit 4, an air intake component for discharging the gas in the liquid collecting bottle 2 into the syringe 1 is arranged in the syringe 1, and an exhaust component for discharging the gas in the syringe 1 to the outside is arranged in the exhaust pipe 8.

[0029] Among them, the air intake assembly includes a first baffle plate 12 fixed in the syringe 1, a plurality of first air holes 13 are opened in the first baffle plate 12, two first connecting rods 16 are sealingly and slidably connected in the first baffle plate 12, and a first movable plate 14 is commonly fixed to one end of the two first connecting rods 16 close to the piston 11, a plurality of first sealing plugs 15 for blocking the corresponding first air holes 13 are fixed to one side of the first movable plate 14 close to the first baffle plate 12, a first connecting plate 17 is commonly fixed to one end of the two first connecting rods 16 away from the first movable plate 14, and a first spring 18 is sleeved on the outside of the first connecting rod 16, one end of the first spring 18 is against the first baffle plate 12, and the other end of the first spring 18 is against the first connecting plate 17.

[0030] In addition, the exhaust assembly includes a second baffle 19 fixed in the exhaust pipe 8, a plurality of second air holes 20 are opened in the second baffle 19, two second connecting rods 22 are sealingly and slidably connected in the second baffle 19, and a second movable plate 21 is commonly fixed at one end of the two second connecting rods 22 away from the syringe 1, and a plurality of second sealing plugs 23 for blocking the corresponding second air holes 20 are fixed on the side of the second movable plate 21 close to the second baffle 19.

[0031] When in use, pull the piston rod 10 to drive the piston 11 to move, and when the piston 11 moves, negative pressure is formed in the syringe 1. At this time, the second sealing plug 23 moves closer to the syringe 1, that is, the second sealing plug 23 blocks the second air hole 20, and at this time the first movable plate 14 is close to the piston 11, so that the first movable plate 14 drives the first connecting rod 16 and the first sealing plug 15 to move. When the first sealing plug 15 no longer blocks the first air hole 13, the gas in the needle body 5 and the fluid collection bottle 2 is drawn into the syringe 1, so that pleural effusion, ascites, pericardial effusion, pleural dialysis fluid, etc. are drawn into the fluid collection bottle 2, and these liquids will not directly enter the syringe 1, that is, the syringe 1 will not be contaminated, so that the syringe 1 can be reused.

[0032] In addition, a second connecting plate 25 is commonly fixed to one end of the two second connecting rods 22 away from the second movable plate 21, and a second spring 24 is sleeved on the outer side of the second connecting rod 22, one end of the second spring 24 abuts against the second baffle 19, and the other end of the second spring 24 abuts against the second connecting plate 25.

[0033] It should be noted that there are many types of specifications of the fluid collecting bottle 2, some are smaller and are used for sampling and testing, and some are larger and are used to collect pleural effusion, ascites and other fluids. When a large-capacity fluid collecting bottle 2 is used to collect liquid, when the negative pressure volume formed by a single pull is much smaller than the accumulated fluid in the patient's body, the accumulated fluid in the patient's body is diverted to the fluid collecting bottle 2 through multiple negative pressures by reciprocating the piston 11. In the process of reciprocating the piston 11, when the piston 11 is moved away from the fluid collecting bottle 2, the second sealing plug 23 blocks the second air hole 20, and the first sealing plug 15 no longer blocks the first air hole 13 due to the negative pressure formed by the movement of the piston 11, so that the accumulated fluid in the patient's body is drawn into the fluid collecting bottle 2. When the extracted accumulated fluid is equal to the extracted negative pressure gas volume, the accumulated fluid in the patient no longer flows into the fluid collecting bottle 2. At this time, the first spring 18 drives the first air hole 13 to flow into the fluid collecting bottle 2 under the rebound force of the first spring 18. The movable plate 14 moves toward the first baffle plate 12, so that the first sealing plug 15 blocks the first air hole 13, and then pushes the piston rod 10 to make the piston 11 move toward the first baffle plate 12. At this time, the first sealing plug 15 blocks the first air hole 13, and the gas in the syringe 1 will squeeze the second sealing plug 23, so that the second sealing plug 23 no longer blocks the second air hole 20, that is, the gas in the syringe 1 is discharged to the outside through the second air hole 20 and the exhaust pipe 8, and then the piston rod 10 is pulled again to make the piston 11 move away from the first baffle plate 12, so that the accumulated fluid in the patient's body can be drawn into the fluid collecting bottle 2 again, and this process is repeated. The accumulated fluid in the patient's body can be drawn into the fluid collecting bottle 2 by multiple extractions. It should be noted that when the piston 11 is moved toward the fluid collecting bottle 2 during this process, the gas in the syringe 1 is discharged from the exhaust pipe 8 to prevent the gas in the syringe 1 from being squeezed into the patient's body.

[0034] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. A puncture device, comprising a syringe (1), characterized in that: A liquid collecting bottle (2) is arranged on one side of the syringe (1), a needle body (5) is arranged on one side of the liquid collecting bottle (2), a first conduit (3) and a second conduit (4) are fixed on and connected to the liquid collecting bottle (2), a barrel cap (6) is fixed on one end of the syringe (1) and connected to the barrel cap (6), the first conduit (3) is inserted into the barrel cap (6), one end of the needle body (5) is fixed on and connected to the needle cap (7), the second conduit (4) is inserted into the needle cap (7), an exhaust pipe (8) is fixed on the outside of the syringe (1) and connected to the outside, an air intake assembly for discharging the gas in the liquid collecting bottle (2) into the syringe (1) is arranged in the syringe (1), and an exhaust assembly for discharging the gas in the syringe (1) to the outside is arranged in the exhaust pipe (8).

2. A puncture device according to claim 1, characterized in that: A piston (11) is sealingly and slidably connected inside the syringe (1), a piston rod (10) is fixed to the side of the piston (11) away from the liquid collecting bottle (2), and sealing covers (9) are provided on the outer sides of the first conduit (3) and the second conduit (4).

3. A puncture device according to claim 1, characterized in that: The air intake assembly comprises a first baffle (12) fixed in the syringe (1), and a plurality of first air holes (13) are provided in the first baffle (12).

4. A puncture device according to claim 3, characterized in that: Two first connecting rods (16) are sealingly and slidably connected inside the first baffle plate (12), and a first movable plate (14) is fixed to one end of the two first connecting rods (16) close to the piston (11), and a plurality of first sealing plugs (15) for blocking the corresponding first air holes (13) are fixed to one side of the first movable plate (14) close to the first baffle plate (12).

5. A puncture device according to claim 4, characterized in that: A first connecting plate (17) is fixed to one end of the two first connecting rods (16) away from the first movable plate (14), and a first spring (18) is sleeved on the outer side of the first connecting rod (16), one end of the first spring (18) is against the first baffle (12), and the other end of the first spring (18) is against the first connecting plate (17).

6. A puncture device according to claim 1, characterized in that: The exhaust assembly comprises a second baffle (19) fixed in the exhaust pipe (8), and a plurality of second air holes (20) are provided in the second baffle (19).

7. A puncture device according to claim 6, characterized in that: The second baffle plate (19) is sealingly and slidably connected with two second connecting rods (22), and a second movable plate (21) is fixed to one end of the two second connecting rods (22) away from the syringe (1), and a plurality of second sealing plugs (23) for blocking the corresponding second air holes (20) are fixed to one side of the second movable plate (21) close to the second baffle plate (19).

8. A puncture device according to claim 7, characterized in that: A second connecting plate (25) is commonly fixed to one end of the two second connecting rods (22) away from the second movable plate (21), and a second spring (24) is sleeved on the outer side of the second connecting rod (22), one end of the second spring (24) abuts against the second baffle (19), and the other end of the second spring (24) abuts against the second connecting plate (25).

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