Blockage self-checking type puncture syringe

Abstract

The utility model relates to the technical field of medical instruments, and discloses a blockage self-checking type puncture syringe which comprises an empty cylinder, a cylinder is fixedly installed at the one-third position of the interior of the empty cylinder, and a piston shaft is movably installed in the cylinder. The piston is fixedly mounted on the right side surface of the piston shaft; and the piston handle is fixedly mounted on the surface of the left side of the piston shaft. Medicine enters the body of a patient through the needle head by pressing down the piston shaft, the piston shaft cannot be pressed down continuously when a puncture problem occurs, at the moment, a pressure value is checked through the diaphragm capacitance type pressure gauge, and whether the puncture position is correct or not is judged; according to the device, the accuracy of the position where a medical worker performs a puncture operation on a patient is improved through the use of the diaphragm capacitive pressure gauge, so that the safety of the patient is guaranteed, and the device is few in design structure, easy to operate, suitable for medical workers in different departments and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically to a blockage self-detecting puncture syringe. Background Art

[0002] A syringe is a common medical tool used to inject liquid medicine or vaccines into the human body. It is usually composed of a syringe, a needle, a plunger and other parts. The self-blocking puncture syringe is a special syringe with a self-blocking function. It can automatically detect whether the needle is blocked during use. It can determine whether the needle is blocked by monitoring the pressure or flow rate of the liquid medicine. If the needle is blocked, the syringe will automatically stop working and sound an alarm so that medical staff can take timely measures to solve the problem, so as to avoid injection failure or drug waste caused by needle blockage.

[0003] Moreover, in traditional spinal puncture, the anesthesiologist's judgment on whether the target puncture in the epidural space is in place mainly depends on the strange feeling of piercing the ligament and the negative pressure after the puncture reaches the epidural space. This negative pressure mainly depends on the anesthesiologist's subjective judgment by the naked eye and touch, and it is impossible to make a more objective and accurate judgment. As a result, for some patients where the negative pressure is not obvious, the needle tip may penetrate into the subarachnoid space, causing a large outflow of cerebrospinal fluid, headache, and even serious complications such as total spinal anesthesia.

[0004] Therefore, this new syringe solves this obvious pain point and displays the objective value of negative pressure on the pressure display gauge of the needle. It may be a booster for improving the accuracy and safety of intrathecal puncture. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a self-detecting puncture syringe for blockage, which has the advantage of being detectable during use of the medical device.

[0006] To achieve the above object, the utility model provides the following technical solution: a self-checking puncture syringe for blockage, comprising an empty barrel, a cylinder is fixedly installed at one third of the inner part of the empty barrel, and a piston shaft is movably installed inside the cylinder;

[0007] A piston, wherein the piston is fixedly mounted on the right side surface of the piston shaft;

[0008] A piston handle, wherein the piston handle is fixedly mounted on the left surface of the piston shaft;

[0009] A needle, the needle being movably mounted at the nipple on the right side surface of the empty barrel;

[0010] A hose, the hose is fixedly mounted on the front of the empty cylinder, and a diaphragm capacitance pressure gauge is movably mounted on one end of the hose;

[0011] The outer shell curling edges are fixedly mounted on two sides of the empty cylinder, and there are two outer shell curling edges.

[0012] As a preferred technical solution of the utility model, an arcuate ring is fixedly installed on the surface of the piston handle, and the arcuate ring is made of plastic. A circular ring is fixedly installed on the bottom of the piston handle, and the circular ring is made of rubber.

[0013] As a preferred technical solution of the utility model, the inner diameter of the cylinder is equal to the outer diameter of the piston shaft, and the inner diameter of the ring is equal to the outer diameter of the empty cylinder.

[0014] As a preferred technical solution of the utility model, the surfaces of the two outer jacket curling edges are both provided with circles of the same size, and one end of the two outer jacket curling edges is both provided with a semi-arc.

[0015] As a preferred technical solution of the utility model, the hollow cylinder is made of polypropylene as a whole, the needle is made of stainless steel, and the piston is made of thermoplastic elastomer.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The utility model allows the medicine to enter the patient's body through the needle by pressing down the piston shaft. When there is a problem with the puncture, the piston shaft cannot continue to be pressed down. At this time, the pressure value is checked through the diaphragm capacitor pressure gauge to judge whether the puncture position is correct. Compared with the traditional device, this device improves the accuracy of the position of the puncture operation performed by medical staff on the patient through the use of the diaphragm capacitor pressure gauge, thereby ensuring the safety of the patient. In addition, this design has fewer structures and is simple to operate. It is suitable for medical staff in different departments and has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the hollow cylinder of the utility model;

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0023] In the figure: 1. empty cylinder; 2. cylinder; 3. piston shaft; 4. piston; 5. piston handle; 6. arc ring; 7. hose; 8. diaphragm capacitance pressure gauge; 9. needle; 10. outer jacket curling; 11. ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 5 As shown, the utility model provides a blockage self-detection puncture syringe, comprising an empty barrel 1, a barrel 2 is fixedly installed at one third of the inner portion of the empty barrel 1, and a piston shaft 3 is movably installed inside the barrel 2;

[0026] The piston 4 is fixedly mounted on the right side surface of the piston shaft 3;

[0027] A piston handle 5, which is fixedly mounted on the left side surface of the piston shaft 3;

[0028] The needle 9 is movably mounted at the nipple on the right side surface of the empty cylinder 1;

[0029] A hose 7, which is fixedly mounted on the front of the empty cylinder 1, and a diaphragm capacitance pressure gauge 8 is movably mounted on one end of the hose 7;

[0030] The outer jacket curling edge 10 is fixedly mounted on both sides of the empty tube 1, and the number of the outer jacket curling edges 10 is two;

[0031] During use, after the medical staff inserts the needle 9 into the patient's body, they push the piston handle 5 so that the piston handle 5 gradually enters the interior of the empty cylinder 1, and the medicine inside the empty cylinder 1 enters the patient's body through the needle 9. When there is a problem with the puncture, when the piston shaft 3 cannot continue to press down, at this time, the pressure value is checked through the diaphragm capacitive pressure gauge 8 to determine whether the puncture position is correct;

[0032] The piston shaft 3 is pressed down to allow the medicine to enter the patient's body through the needle 9. When a problem occurs with the puncture, the piston shaft 3 cannot be pressed down any further. At this time, the pressure value is checked through the diaphragm capacitor pressure gauge 8 to determine whether the puncture position is correct. Compared with the traditional device, this device improves the accuracy of the medical staff's puncture position when performing surgery on the patient through the use of the diaphragm capacitor pressure gauge 8, thereby ensuring the safety of the patient. In addition, this design has fewer structures and is simple to operate. It is suitable for medical staff in different departments and has high versatility.

[0033] The surface of the piston handle 5 is fixedly mounted with an arc ring 6, which is made of plastic, and the bottom of the piston handle 5 is fixedly mounted with a circular ring 11, which is made of rubber;

[0034] An arc ring 6 is fixedly installed on the surface of the piston handle 5, and the arc ring 6 is made of plastic. The arc ring 6 is arranged on the surface of the piston handle 5, which makes it more convenient to push and pull the piston shaft 3. Plastic is light in weight and relatively cheap. A circular ring 11 is fixedly installed on the bottom of the piston handle 5, and the circular ring 11 is made of rubber. When the piston shaft 3 completely enters the interior of the empty cylinder 1, the circular ring 11 prevents air from entering the interior of the empty cylinder 1.

[0035] The inner diameter of the cylinder 2 is equal to the outer diameter of the piston shaft 3, and the inner diameter of the ring 11 is equal to the outer diameter of the hollow cylinder 1.

[0036] The inner diameter of the cylinder 2 and the outer diameter of the piston shaft 3 are set to the same size, and the inner diameter of the ring 11 and the outer diameter of the empty cylinder 1 are set to the same size. This design prevents air from entering during use and achieves a vacuum state.

[0037] The surfaces of the two outer jacket curling edges 10 are provided with circles of the same size, and one end of the two outer jacket curling edges 10 is provided with a semi-arc;

[0038] The surfaces of the two outer coat curling edges 10 are provided with circles of the same size, and one end of the two outer coat curling edges 10 is provided with a pair of semi-arcs of the same size. This design can prevent medical staff from exerting unnecessary pressure or bending on the syringe with their hands or other objects when using the empty barrel 1 to extract or inject drugs, thereby ensuring the accuracy and safety of the operation.

[0039] The hollow cylinder 1 is made of polypropylene, the needle 9 is made of stainless steel, and the piston 4 is made of thermoplastic elastomer.

[0040] The hollow cylinder 1 is made entirely of polypropylene, which has the characteristics of transparency, low temperature resistance, good toughness and good chemical stability. Polypropylene can maintain the stability and physical properties of the material under conventional disinfection conditions, and avoid interaction between the drug and the instrument material. The needle 9 is made of stainless steel, and the stainless steel needle 9 has high strength and corrosion resistance, and is suitable for medical puncture operations. The piston 4 is made of a thermoplastic elastomer, which has good elasticity and wear resistance.

[0041] The working principle and use process of this utility model:

[0042] During use, after the medical staff inserts the needle 9 into the patient's body, they push the piston handle 5 so that the piston handle 5 gradually enters the interior of the empty cylinder 1, and the medicine inside the empty cylinder 1 enters the patient's body through the needle 9. When there is a problem with the puncture and the piston shaft 3 cannot continue to press down, the pressure value is checked through the diaphragm capacitive pressure gauge 8 to determine whether the puncture position is accurate.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-checking puncture syringe, comprising an empty barrel (1), characterized in that: A cylinder (2) is fixedly mounted at one third of the inner portion of the hollow cylinder (1), and a piston shaft (3) is movably mounted inside the cylinder (2); A piston (4), wherein the piston (4) is fixedly mounted on the right side surface of the piston shaft (3); A piston handle (5), wherein the piston handle (5) is fixedly mounted on the left side surface of the piston shaft (3); A needle (9), wherein the needle (9) is movably mounted at the nipple on the right side surface of the empty cylinder (1); A hose (7), wherein the hose (7) is fixedly mounted on the front side of the empty cylinder (1), and a diaphragm capacitance pressure gauge (8) is movably mounted on one end of the hose (7); The outer shell curling edge (10) is fixedly mounted on two sides of the empty cylinder (1), and there are two outer shell curling edges (10).

2. The blockage self-detecting puncture syringe according to claim 1, characterized in that: An arc-shaped ring (6) is fixedly mounted on the surface of the piston handle (5), and the arc-shaped ring (6) is made of plastic. A circular ring (11) is fixedly mounted on the bottom of the piston handle (5), and the circular ring (11) is made of rubber.

3. The blockage self-detecting puncture syringe according to claim 1, characterized in that: The inner diameter of the cylinder (2) is equal to the outer diameter of the piston shaft (3), and the inner diameter of the ring (11) is equal to the outer diameter of the empty cylinder (1).

4. The blockage self-detecting puncture syringe according to claim 1, characterized in that: The surfaces of the two outer jacket curling edges (10) are both provided with circles of the same size, and one end of the two outer jacket curling edges (10) is both provided with a semi-arc.

5. The blockage self-detecting puncture syringe according to claim 1, characterized in that: The hollow cylinder (1) is made entirely of polypropylene, the needle (9) is made of stainless steel, and the piston (4) is made of thermoplastic elastomer.

Images