Medical anesthetic quantitative injector

Abstract

The invention belongs to the technical field of medical devices, and particularly relates to a medical anesthetic quantitative injector which comprises a medical needle tube, an injection needle is fixedly mounted on the outer wall of the bottom of the medical needle tube, and an anti-rolling touch plate is fixedly connected to the outer wall of the periphery of the top of the medical needle tube. A nitrile rubber buna injection valve plug is movably connected to the inner wall of the medical needle tube, an extension plate is fixedly connected to the outer wall of the top of the nitrile rubber buna injection valve plug, a pressing plate is fixedly connected to the outer wall of the end, away from the nitrile rubber buna injection valve plug, of the extension plate, and two quantitative keeping sleeves are movably attached to the outer wall of the top of an anti-rolling touch plate; the two quantitative keeping sleeves are symmetrically attached in a semicircular state, a fixing pull ring is fixedly connected to the outer wall of one side of each quantitative keeping sleeve, four-point contact is achieved through the index finger, the middle finger, the finger seam and the thumb of a physician, a more stable injection gesture is formed, clamping slipping is not prone to being formed, and the index finger, the middle finger and the finger seam form a triangular fixing base plate. And shaking caused by thumb pressing is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a medical anesthetic quantitative syringe. Background Art

[0002] A medical anesthetic quantitative syringe is a medical device used to inject anesthetic drugs into patients in medical scenarios such as surgeries. According to different application scenarios and injection methods, anesthetic dosing devices can be divided into various types, including those that can precisely control the dose of anesthetic drugs, mainly including fields such as surgery, anesthesia, and pain management. During surgery, a medical anesthetic quantitative syringe can help doctors precisely control the dose of anesthetic drugs to ensure that the patient is in an appropriate anesthetic state during the surgical process and reduce surgical risks. In pain management, a medical anesthetic quantitative syringe can help patients relieve pain and improve the treatment effect.

[0003] For example, a medical anesthetic quantitative syringe disclosed in the national patent publication number CN111760130B. The present invention provides a medical anesthetic quantitative syringe, including a syringe barrel. There is a fixing plate at the upper end of the barrel, and a rectangular housing above the fixing plate. There is a first friction wheel inside the housing, a second friction wheel above the first friction wheel, worm gears on both sides of the housing cavity, a worm meshing with one side of the worm gear, and a friction plate on one side of the worm gear; there is a planetary gear mechanism between the fixing plate and the housing. Among them, there is a hollow cylinder at the upper end of the gear ring, the upper end of the hollow cylinder is fixed to the first friction wheel, the upper end of the central axis of the sun gear is fixed to the second friction wheel, a screw rod is fixed to the lower end of the planet carrier, a sliding cylinder is sleeved at the lower end of the screw rod, and the lower end of the sliding cylinder is a piston head; there is a rotating cylinder outside the hollow cylinder, there is a movable plate outside the hollow cylinder, there are multiple grooves on the outer circumferential surface of the rotating cylinder, and there are raised blocks on the rotating cylinder, effectively solving the problem in the prior art that the amount of drug injected each time during the injection of anesthetic drugs is inconsistent, and the amount of drug injected before and after is uneven, affecting the anesthetic effect and being unfavorable for the progress of the surgery. However, the traditional device still has the following problems when in use: During the injection process of the above device, the needle needs to be inserted into the patient's body, and then the pressing plate needs to be mechanically pressed to control the injection volume per time to be consistent. However, the injection posture of the doctor's hand means that multiple mechanical presses require the thumb to synchronously release the pressing plate and reapply pressure. During this release process, the doctor can only use the index finger and middle finger to exert force to clamp the middle part of the syringe tube, which is prone to slipping. Moreover, the thumb of a person rotates and exerts force around the tiger's mouth of the wrist, rather than a completely longitudinal force application process. Multiple mechanical presses will cause the syringe to shake around the index finger and middle finger due to the additional thrust, which will increase the discomfort of the patient. Therefore, we need a medical anesthetic quantitative syringe to reduce the pressing force of the doctor, thereby improving the stability of the device during quantitative injection and alleviating the discomfort of the patient. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a medical anesthetic quantitative syringe, which has the advantages of improving the stability of the device during quantitative injection and relieving the discomfort of patients.

[0005] To achieve the above object, the present invention provides the following technical solution: A medical anesthetic quantitative syringe, including a medical syringe tube, the bottom outer wall of the medical syringe tube is fixedly installed with an injection needle, the outer walls around the top of the medical syringe tube are fixedly connected with anti-rolling contact plates, the inner wall of the medical syringe tube is movably connected with a nitrile rubber injection valve plug, the top outer wall of the nitrile rubber injection valve plug is fixedly connected with an extension plate, one end outer wall of the extension plate away from the nitrile rubber injection valve plug is fixedly connected with a pressing plate, the top outer walls of the anti-rolling contact plates are movably attached to two quantitative holding sleeves, the two quantitative holding sleeves are symmetrically attached in a semi-circular state, and one side outer wall of the quantitative holding sleeve is fixedly connected with a fixed pull ring.

[0006] Preferably, one side outer wall of the quantitative holding sleeve is fixedly connected with a first connecting plate, one side outer wall of the first connecting plate is fixedly connected with a second connecting plate, one end outer wall of the second connecting plate away from the first connecting plate is fixedly installed with a first connecting hinge, and the outer walls of the two second connecting plates are meshed with each other through the same first connecting hinge. The second connecting plate is a parallelogram and extends obliquely upward at an angle of °.

[0007] Preferably, one side of the bottom outer wall of the quantitative holding sleeve is fixedly connected with a limiting frame, the bottom of one side outer wall of the limiting frame is fixedly connected with a limiting ring plate, the inner wall of the limiting ring plate is movably attached to the outer wall of the medical syringe tube, and the top outer wall of the limiting ring plate is movably attached to the bottom outer wall of the anti-rolling contact plate.

[0008] Preferably, an installation groove is opened on the inner wall of the quantitative holding sleeve, a middle rotating sleeve is rotatably connected to the inner wall of the installation groove, a first shaft bevel gear is fixedly sleeved on the outer wall of the middle rotating sleeve, an annular rotating groove is opened on the outer wall around one of the fixed pull rings, a second shaft bevel gear is rotatably connected to the inner wall of the annular rotating groove, one side inner wall of the annular rotating groove is communicated with one side inner wall of the installation groove, the outer wall of the first shaft bevel gear is meshed with the outer wall of the second shaft bevel gear, the diameter of the second shaft bevel gear is higher than the diameter of the fixed pull ring, and the length of the second shaft bevel gear higher than the diameter of the fixed pull ring is lower than the height of the limiting frame.

[0009] Preferably, an inner spiral groove is opened on the inner wall of the middle rotating sleeve, an inner layer quantitative sleeve is arranged inside the middle rotating sleeve, an outer spiral groove is opened on the outer wall of the inner layer quantitative sleeve, and the outer spiral groove is meshed with the inner spiral groove.

[0010] Preferably, a mounting base is fixedly mounted on the bottom inner wall of the quantitative retaining sleeve, a plurality of limit rods are fixedly connected to the top outer wall of the mounting base, and a plurality of connecting holes connecting the upper and lower outer walls are formed in the inner quantitative sleeve, and the inner wall of the connecting hole is movably connected to the outer wall of the limit rod.

[0011] Preferably, the bottom inner wall of the quantitative retaining sleeve is fixedly connected with an adjusting rod, the top outer wall of the adjusting rod is fixedly connected with the top inner wall of the quantitative retaining sleeve, the outer wall of the adjusting rod is movably sleeved with an adjusting spring, the top outer wall of the adjusting spring is fixedly connected with a mounting sleeve, the inner wall of the mounting sleeve is movably sleeved with the outer wall of the adjusting rod, a second connecting hinge is fixedly installed on the outer wall of one side of the mounting sleeve, the top outer wall of the second connecting hinge is fixedly connected with an inclined plate, the top outer wall of the inclined plate is fixedly connected with a straight plate, one side outer wall of the straight plate is fixedly connected with a meshing caliper, one side outer wall of the extension plate is fixedly connected with a plastic rack, and the outer wall of the meshing caliper is meshingly connected with the outer wall of the plastic rack.

[0012] Preferably, the bottom outer wall of the inclined plate is fixedly connected with a toggle plate, the cross-section of the toggle plate is a right-angled inverted triangle, the bottom inner wall of the quantitative retaining sleeve is fixedly connected with a toggle block, the top outer wall of the toggle block is movably fitted with the bottom outer wall of the toggle plate, and the outer wall of one side of the mounting sleeve is fixedly connected with a support plate, and the outer wall of one side of the support plate is movably fitted with the outer wall of one side of the straight plate.

[0013] Preferably, an adjusting magnet is fixedly installed on the outer wall of one side of the straight plate, and an annular magnetic sheet is fixedly installed on the inner wall of the inner quantitative sleeve, the adjusting magnet and the annular magnetic sheet magnetically repel each other, and a resisting ring sheet is fixedly connected to the top of the inner wall of the inner quantitative sleeve, and the bottom outer wall of the resisting ring sheet is pressed and fitted against one side of the top outer wall of the mounting sleeve.

[0014] Preferably, one side outer wall of the two quantitative retaining sleeves is fixedly connected with a mounting plate, the two mounting plates are fitted together, one side outer wall of the mounting plate is fixedly connected with a magnetic plate, and the magnetic plates on the two mounting plates are magnetically connected to each other.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the physician inserts the index finger and the middle finger into two fixed pull rings. With the first connecting hinge as the opening and closing axis, the limiting ring plate is inserted under the anti-rolling contact plate, and the anti-rolling contact plate is held at the clamping gap between the limiting ring plate and the medical syringe. The two magnetic attraction plates are magnetically attracted to maintain a fixed state. At this time, the physician presses against the upper part of the pressing plate with the thumb to complete the pressing. This is the injection gesture of the present invention. Among them, the second connecting plate is in a special inclined extension shape. At this time, the first connecting hinge will be clamped at the finger gap between the physician's index finger and middle finger, and the finger joints of the index finger and middle finger will fit on the outer walls of the second connecting plate and the first connecting plate. Using this mechanism, four-point contact is achieved through the physician's index finger, middle finger, finger gap, and thumb, forming a more stable injection gesture and not easily causing clamping slippage. Even if the thumb rotates and applies force around the wrist tiger's mouth and is not a completely longitudinal force application process, a triangular fixed chassis will be formed by the index finger, middle finger, and finger gap to reduce the shaking caused by the thumb pressing. In the present invention, the medical syringe, injection needle, nitrile rubber injection valve plug, extension plate, pressing plate, and anti-rolling contact plate are all conventional disposable medical plastic products on the market. Therefore, this device can meet the high consumption of medical equipment, reduce medical costs, avoid cross-infection, and has stronger practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure in the upper right direction of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure in the left rear direction of the present invention.

[0018] Figure 3 It is a schematic diagram of the top view structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the overall structure of the medical syringe of the present invention.

[0020] Figure 5 It is a schematic diagram of the semi-sectional structure of the medical syringe of the present invention.

[0021] Figure 6 It is a schematic diagram of the overall structure of the quantitative holding sleeve of the present invention.

[0022] Figure 7 It is a schematic diagram of the internal structure of the quantitative holding sleeve of the present invention.

[0023] Figure 8 It is a schematic diagram of the internal structure of the middle-layer rotating sleeve of the present invention.

[0024] Figure 9 is Figure 8 an enlarged schematic diagram of the structure at A in

[0025] Figure 10 It is a schematic diagram of the internal side view structure of the middle-layer rotating sleeve of the present invention.

[0026] Figure 11 It is a schematic diagram of the upper right inner structure of the middle rotating sleeve of the present invention.

[0027] Figure 12 It is a schematic diagram of the structure of the inner quantitative sleeve of the present invention.

[0028] Figure 13 It is a schematic structural diagram of a half-section of the quantitative retaining sleeve of the present invention.

[0029] Figure 14 for Figure 13 Schematic diagram of the structure at B in the figure.

[0030] In the figure: 1. medical needle tube; 2. injection needle; 3. nitrile rubber injection valve plug; 4. extension plate; 5. pressure plate; 6. anti-roll touch plate; 7. quantitative holding sleeve; 8. fixed pull ring; 9. first connecting plate; 10. second connecting plate; 11. first connecting hinge; 12. limit frame; 13. limit ring plate; 14. mounting plate; 15. magnetic plate; 16. mounting groove; 17. middle layer rotating sleeve; 18. first axis bevel gear; 19. annular rotating groove; 20. second axis Bevel gear; 21. Inner spiral groove; 22. Inner quantitative sleeve; 23. Outer spiral groove; 24. Connecting hole; 25. Limit rod; 26. Mounting base plate; 27. Adjusting rod; 28. Adjusting spring; 29. ​​Mounting sleeve; 30. Second connecting hinge; 31. Inclined plate; 32. Straight plate; 33. Engaging caliper; 34. Toggle plate; 35. Toggle stopper; 36. Support plate; 37. Adjusting magnet; 38. Annular magnetic sheet; 39. Retaining ring sheet; 40. Plastic rack. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figures 1 to 14, the present invention provides a technical solution: a medical anesthetic quantitative syringe, which includes a medical syringe barrel 1. The bottom outer wall of the medical syringe barrel 1 is fixedly installed with an injection needle 2. The outer walls around the top of the medical syringe barrel 1 are fixedly connected with anti-rolling contact plates 6. A nitrile rubber injection valve plug 3 is movably connected to the inner wall of the medical syringe barrel 1. The top outer wall of the nitrile rubber injection valve plug 3 is fixedly connected with an extension plate 4. One end outer wall of the extension plate 4 away from the nitrile rubber injection valve plug 3 is fixedly connected with a pressing plate 5. Two quantitative holding sleeves 7 are movably attached to the top outer wall of the anti-rolling contact plate 6. The two quantitative holding sleeves 7 are symmetrically attached in a semi-circular state. One side outer wall of the quantitative holding sleeve 7 is fixedly connected with a fixed pull ring 8. One side outer wall of the quantitative holding sleeve 7 is fixedly connected with a first connecting plate 9. One side outer wall of the first connecting plate 9 is fixedly connected with a second connecting plate 10. One end outer wall of the second connecting plate 10 away from the first connecting plate 9 is fixedly installed with a first connecting hinge 11. The outer walls of the two second connecting plates 10 are meshed with each other through the same first connecting hinge 11. The second connecting plate 10 is a parallelogram and extends obliquely upward at 45°. One side of the bottom outer wall of the quantitative holding sleeve 7 is fixedly connected with a limiting frame 12. The bottom of one side outer wall of the limiting frame 12 is fixedly connected with a limiting ring plate 13. The inner wall of the limiting ring plate 13 is movably attached to the outer wall of the medical syringe barrel 1. The top outer wall of the limiting ring plate 13 is movably attached to the bottom outer wall of the anti-rolling contact plate 6. One side outer walls of the two quantitative holding sleeves 7 are both fixedly connected with mounting plates 14. The two mounting plates 14 are attached to each other. One side outer wall of the mounting plate 14 is fixedly connected with a magnetic attraction plate 15. The magnetic attraction plates 15 on the two mounting plates 14 are magnetically connected to each other.

[0033] In the present invention, the doctor inserts the index finger and middle finger into the two fixed pull rings 8, uses the first connecting hinge 11 as the opening and closing axis, inserts the limiting ring plate 13 under the anti-rolling contact plate 6, and keeps the anti-rolling contact plate 6 at the gap between the limiting ring plate 13 and the medical syringe barrel 1. The two magnetic attraction plates 15 are magnetically attracted to maintain a fixed state. At this time, the doctor presses against the upper part of the pressing plate 5 with the thumb to complete the pressing. This is the injection gesture of the present invention. Among them, the second connecting plate 10 has a special inclined extension shape. The first connecting hinge 11 will be clamped in the finger gap between the doctor's index finger and middle finger at this time, and the finger joints of the index finger and middle finger will fit on the outer wall positions of the second connecting plate 10 and the first connecting plate 9. Using this mechanism, four-point contact is achieved through the doctor's index finger, middle finger, finger gap, and thumb, forming a more stable injection gesture and not easily causing clamping and slipping. Even if the thumb rotates and applies force with the wrist tiger's mouth as the axis, rather than a completely longitudinal force application process, a triangular fixed chassis will be formed through the index finger, middle finger, and finger gap to reduce the shaking caused by the thumb pressing. In the present invention, the medical syringe barrel 1, the injection needle 2, the nitrile rubber injection valve plug 3, the extension plate 4, the pressing plate 5, and the anti-rolling contact plate 6 are all conventional disposable medical plastic products on the market. Therefore, this device can meet the high consumption of medical equipment, reduce medical costs, avoid cross-infection, and has stronger practicability.

[0034] Example 2. On the basis of Example 1, an installation groove 16 is provided on the inner wall of the quantitative holding sleeve 7. A middle-layer rotating sleeve 17 is rotatably connected to the inner wall of the installation groove 16. A first shaft bevel gear 18 is fixedly sleeved on the outer wall of the middle-layer rotating sleeve 17. An annular rotating groove 19 is provided on the outer wall around one of the fixed pull rings 8. A second shaft bevel gear 20 is rotatably connected to the inner wall of the annular rotating groove 19. One side inner wall of the annular rotating groove 19 is communicated with one side inner wall of the installation groove 16. The outer wall of the first shaft bevel gear 18 is meshed and connected with the outer wall of the second shaft bevel gear 20. The diameter of the second shaft bevel gear 20 is higher than the diameter of the fixed pull ring 8. The length by which the second shaft bevel gear 20 is higher than the diameter of the fixed pull ring 8 is lower than the height of the limiting frame 12. An inner spiral groove 21 is provided on the inner wall of the middle-layer rotating sleeve 17. An inner-layer quantitative sleeve 22 is arranged inside the middle-layer rotating sleeve 17. An outer spiral groove 23 is provided on the outer wall of the inner-layer quantitative sleeve 22. The outer spiral groove 23 is meshed and connected with the inner spiral groove 21. An installation bottom plate 26 is fixedly installed on the bottom inner wall of the quantitative holding sleeve 7. A plurality of limiting rods 25 are fixedly connected to the top outer wall of the installation bottom plate 26. The inner-layer quantitative sleeve 22 is provided with a plurality of communication holes 24 that communicate the upper and lower outer walls. The inner wall of the communication hole 24 is movably sleeved with the outer wall of the limiting rod 25.

[0035] In the present invention, the second shaft bevel gear 20 is adjusted with quantitative scales. During complex surgeries, a doctor can achieve single-handed quantitative adjustment by rotating the second shaft bevel gear 20 with the thumb. The rotation of the second shaft bevel gear 20 drives the first shaft bevel gear 18 to rotate synchronously. The first shaft bevel gear 18 drives the middle-layer rotating sleeve 17 to rotate. Through the meshing of the inner spiral groove 21 and the straight plate 32, when the middle-layer rotating sleeve 17 rotates, the inner-layer quantitative sleeve 22 is limited by the limiting rod 25 and can only move longitudinally. By adjusting the height of the inner-layer quantitative sleeve 22 inside the middle-layer rotating sleeve 17, the single-press process of the pressing plate 5 is adjusted, thereby realizing the quantitative adjustment of the medical syringe 1.

[0036] Embodiment 3, on the basis of embodiment 2, the bottom inner wall of the quantitative holding sleeve 7 is fixedly connected with an adjusting rod 27, the top outer wall of the adjusting rod 27 is fixedly connected with the top inner wall of the quantitative holding sleeve 7, the outer wall of the adjusting rod 27 is movably sleeved with an adjusting spring 28, the top outer wall of the adjusting spring 28 is fixedly connected with an installation sleeve 29, the inner wall of the installation sleeve 29 is movably sleeved with the outer wall of the adjusting rod 27, a second connecting hinge 30 is fixedly installed on one side outer wall of the installation sleeve 29, the top outer wall of the second connecting hinge 30 is fixedly connected with an inclined plate 31, the top outer wall of the inclined plate 31 is fixedly connected with a straight plate 32, one side outer wall of the straight plate 32 is fixedly connected with a meshing caliper 33, one side outer wall of the extension plate 4 is fixedly connected with a plastic rack 40, the outer wall of the meshing caliper 33 is connected to the plastic rack 40 The outer walls are meshed and connected, and a toggle piece 34 is fixedly connected to the bottom outer wall of the inclined plate 31, and the cross-section of the toggle piece 34 is a right-angled inverted triangle. A toggle stopper 35 is fixedly connected to the bottom inner wall of the quantitative holding sleeve 7, and the top outer wall of the toggle stopper 35 is movably fitted with the bottom outer wall of the toggle piece 34. A support plate 36 is fixedly connected to the outer wall of one side of the mounting sleeve 29, and the outer wall of one side of the support plate 36 is movably fitted with the outer wall of one side of the straight plate 32. An adjusting magnet 37 is fixedly installed on the outer wall of one side of the straight plate 32, and an annular magnetic suction piece 38 is fixedly installed on the inner wall of the inner quantitative sleeve 22. The adjusting magnet 37 and the annular magnetic suction piece 38 repel each other magnetically. A resisting ring piece 39 is fixedly connected to the top of the inner wall of the inner quantitative sleeve 22, and the bottom outer wall of the resisting ring piece 39 is pressed and fitted with one side of the top outer wall of the mounting sleeve 29.

[0037] In the present invention, the installation sleeve 29 is resisted by the resisting ring piece 39 to meet the process limitation of the installation sleeve 29. After the doctor inhales the anesthetic from the injection needle 2 into the medical needle tube 1, the present invention is turned upside down and the pressure plate 5 is pressed to exhaust the air. At this time, in the initial state, the doctor completes the quantitative adjustment by rotating the second shaft bevel gear 20, and the meshing caliper 33 is meshed with the plastic rack 40. When the doctor presses the pressure plate 5, the meshing caliper 33 will move synchronously with the plastic rack 40, and drive the device on the installation sleeve 29 to move downward synchronously. When the meshing caliper 33 is about to touch the bottom, the right-angled inverted triangle connecting hole 24 will first contact and press with the toggle block 35 to cause deflection, driving the meshing caliper 33 to deflect and disengage from the plastic rack 40. At this time, the straight plate 32 leans back against the outer wall of the back plate 36, and the installation sleeve 29 returns to the bottom position of the resisting ring piece 39 under the tension rebound of the adjustment spring 28, that is, After a single quantitative anesthetic injection is completed, due to the meshing and pressing of the meshing caliper 33 and the plastic rack 40, the doctor can feel the change in the pressing pressure at this time, and timely grasp the quantitative injection progress through the pressing pressure. In the present application, a buffer rubber gasket is installed on the upper end of the installation sleeve 29, and a shock absorbing mechanism is installed, and the rebound will not produce a large amplitude of shaking. After the top outer wall of the installation sleeve 29 is fitted with the bottom outer wall of the resisting ring sheet 39, under the influence of the magnetic repulsion of the annular magnetic sheet 38, the adjusting magnet 37 will push the meshing caliper 33 to move and re-engage with the outer wall of the plastic rack 40, thereby forming a single quantitative reciprocating adjustment. The present invention does not require the doctor to perform multiple mechanical presses, and the thumb does not need to synchronously loosen the pressure plate 5 to re-apply pressure. The quantitative injection progress is timely grasped through the pressing pressure, thereby reducing shaking, improving the stability of the device during quantitative injection, and alleviating the patient's discomfort.

[0038] The working principle and use process of the present invention are as follows: In the present invention, the doctor inserts the index finger and the middle finger into the two fixed pull rings 8, takes the first connecting hinge 11 as the opening and closing axis, inserts the limit ring plate 13 under the anti-roll touch plate 6, and keeps the anti-roll touch plate 6 in the gap between the limit ring plate 13 and the medical needle tube 1. The two magnetic suction plates 15 are magnetically attracted to each other and remain in a fixed state. At this time, the doctor can complete the pressing by pressing the top of the pressure plate 5 with his thumb. This is the injection gesture of the present invention, wherein the second connecting plate 10 is a special inclined extension shape, and the first connecting hinge 11 will be clamped in the finger gap of the doctor's index finger and middle finger at this time, and the knuckles of the index finger and middle finger will fit the outer wall position of the second connecting plate 10 and the first connecting plate 9. By using this mechanism, the doctor's index finger, middle finger, and finger gap can be pressed. , the thumb achieves four-point contact to form a more stable injection gesture, which is not easy to form clamping slippage. Even if the thumb is rotated with the wrist base as the axis to apply force, it is not a completely longitudinal force application process. The index finger, middle finger, and finger gaps will form a triangular fixed chassis to reduce the shaking caused by thumb pressing. In the present invention, the medical syringe 1, injection needle 2, nitrile rubber injection valve plug 3, extension plate 4, pressure plate 5, and anti-roll touch plate 6 are all conventional disposable medical plastic products on the market. Therefore, this device can meet the high medical equipment consumption, reduce medical costs, avoid cross infection, and is more practical. In the present invention, the second-axis bevel gear 20 is adjusted with a quantitative scale. The doctor can achieve single-handed adjustment by rotating the second-axis bevel gear 20 with the thumb during complex surgical procedures. Quantitative, the rotation of the second-axis bevel gear 20 drives the first-axis bevel gear 18 to rotate synchronously, and the first-axis bevel gear 18 drives the middle-layer rotating sleeve 17 to rotate. Through the meshing of the inner spiral groove 21 and the straight plate 32, when the middle-layer rotating sleeve 17 rotates, the inner-layer quantitative sleeve 22 is limited by the limiting rod 25 and will only move longitudinally. By adjusting the height of the inner-layer quantitative sleeve 22 in the middle-layer rotating sleeve 17, the single pressing process of the pressing plate 5 is adjusted, thereby realizing quantitative adjustment of the medical needle tube 1. In the present invention, the installation sleeve 29 is resisted by the resisting ring piece 39 to meet the process limit of the installation sleeve 29. When the doctor inhales the anesthetic from the injection needle 2 into the medical needle tube 1, the present invention is turned upside down and the pressing plate 5 is pressed to exhaust the air. At this time, in the initial state, the doctor The quantitative adjustment is completed by rotating the second-axis bevel gear 20, and the meshing caliper 33 meshes with the plastic rack 40. When the doctor presses the pressure plate 5, the meshing caliper 33 will move synchronously with the plastic rack 40, and drive the device on the mounting sleeve 29 to move downward synchronously. When the meshing caliper 33 is about to touch the bottom, the right-angled inverted triangle connecting hole 24 will first contact and press with the toggle block 35 to cause deflection, driving the meshing caliper 33 to deflect and disengage from the plastic rack 40. At this time, the straight plate 32 leans back against the outer wall of the support plate 36, and the mounting sleeve 29 returns to the bottom position of the resisting ring piece 39 under the tension rebound of the adjustment spring 28, that is, the single quantitative anesthetic injection is completed. Due to the meshing and pressing of the meshing caliper 33 and the plastic rack 40, the doctor can feel the change of the pressing pressure at this time.By pressing the pressure, the quantitative injection process can be grasped in a timely manner. In this application, a buffer rubber washer is installed at the upper end of the sliding sleeve 29, and a shock-absorbing mechanism is installed. There will be no large-amplitude jitter during rebound. After the outer wall of the top of the sliding sleeve 29 fits with the outer wall of the bottom of the resisting ring piece 39, affected by the magnetic repulsion of the annular magnetic sheet 38, the adjusting magnet 37 will push the meshing caliper 33 to move and re-engage on the outer wall of the plastic rack 40, thereby forming a single quantitative reciprocating adjustment. In the present invention, there is no need for a doctor to perform multiple mechanical presses, and the thumb does not need to synchronously release the pressing plate 5 and re-apply pressure. By pressing the pressure, the quantitative injection process can be grasped in a timely manner, thereby reducing jitter, improving the stability of the device during quantitative injection, and alleviating the discomfort of the patient.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical anesthetic quantitative syringe, comprising a medical syringe barrel (1), characterized in that: The outer wall of the bottom of the medical syringe (1) is fixedly installed with an injection needle (2). The outer walls around the top of the medical syringe (1) are fixedly connected with anti-rolling contact plates (6). The inner wall of the medical syringe (1) is movably connected with a nitrile rubber injection valve plug (3). The outer wall of the top of the nitrile rubber injection valve plug (3) is fixedly connected with an extension plate (4). One end of the extension plate (4) away from the nitrile rubber injection valve plug (3) is fixedly connected with a pressing plate (5). The top outer walls of the anti-rolling contact plates (6) are movably attached to two quantitative holding sleeves (7). The two quantitative holding sleeves (7) are symmetrically attached in a semi-circular state. One side outer wall of the quantitative holding sleeve (7) is fixedly connected with a fixed pull ring (8).

2. The quantitative syringe for medical anesthetic according to claim 1, wherein: One side outer wall of the quantitative holding sleeve (7) is fixedly connected with a first connecting plate (9). One side outer wall of the first connecting plate (9) is fixedly connected with a second connecting plate (10). One end of the second connecting plate (10) away from the first connecting plate (9) is fixedly installed with a first connecting hinge (11). The outer walls of one side of the two second connecting plates (10) are meshed with each other through the same first connecting hinge (11). The second connecting plate (10) is a parallelogram and extends obliquely upward at 45°.

3. The quantitative syringe for medical anesthetic according to claim 2, characterized in that: One side of the bottom outer wall of the quantitative holding sleeve (7) is fixedly connected with a limiting frame (12). The bottom of one side outer wall of the limiting frame (12) is fixedly connected with a limiting ring plate (13). The inner wall of the limiting ring plate (13) is movably attached to the outer wall of the medical syringe (1). The top outer wall of the limiting ring plate (13) is movably attached to the bottom outer wall of the anti-rolling contact plate (6).

4. A medical anesthetic quantitative syringe according to claim 1, characterized in that: An installation groove (16) is formed in the inner wall of the quantitative holding sleeve (7). A middle-layer rotating sleeve (17) is rotatably connected to the inner wall of the installation groove (16). A first shaft bevel gear (18) is fixedly sleeved on the outer wall of the middle-layer rotating sleeve (17). An annular rotating groove (19) is formed in the outer wall around one of the fixed pull rings (8). A second shaft bevel gear (20) is rotatably connected to the inner wall of the annular rotating groove (19). One side inner wall of the annular rotating groove (19) is communicated with one side inner wall of the installation groove (16). The outer wall of the first shaft bevel gear (18) is meshed with the outer wall of the second shaft bevel gear (20). The diameter of the second shaft bevel gear (20) is larger than the diameter of the fixed pull ring (8). The length by which the second shaft bevel gear (20) is higher than the diameter of the fixed pull ring (8) is lower than the height of the limiting frame (12).

5. The quantitative syringe for medical anesthetic according to claim 4, wherein: An inner spiral groove (21) is formed in the inner wall of the middle-layer rotating sleeve (17). An inner-layer quantitative sleeve (22) is arranged inside the middle-layer rotating sleeve (17). An outer spiral groove (23) is formed in the outer wall of the inner-layer quantitative sleeve (22). The outer spiral groove (23) is meshed with the inner spiral groove (21).

6. The quantitative syringe for medical anesthetic according to claim 5, wherein: A mounting base plate (26) is fixedly mounted on the bottom inner wall of the quantitative holding sleeve (7), a plurality of limit rods (25) are fixedly connected to the top outer wall of the mounting base plate (26), and a plurality of connecting holes (24) are formed in the inner quantitative sleeve (22) and the upper and lower outer walls are connected, and the inner walls of the connecting holes (24) are movably sleeved with the outer walls of the limit rods (25).

7. The quantitative syringe for medical anesthetic according to claim 6, characterized in that: The bottom inner wall of the quantitative holding sleeve (7) is fixedly connected to an adjusting rod (27); the top outer wall of the adjusting rod (27) is fixedly connected to the top inner wall of the quantitative holding sleeve (7); the outer wall of the adjusting rod (27) is movably sleeved with an adjusting spring (28); the top outer wall of the adjusting spring (28) is fixedly connected to a mounting sleeve (29); the inner wall of the mounting sleeve (29) is movably sleeved with the outer wall of the adjusting rod (27); a second connecting hinge (30) is fixedly installed on one side outer wall of the mounting sleeve (29); the top outer wall of the second connecting hinge (30) is fixedly connected to an inclined plate (31); the top outer wall of the inclined plate (31) is fixedly connected to a straight plate (32); a meshing caliper (33) is fixedly connected to one side outer wall of the straight plate (32); a plastic rack (40) is fixedly connected to one side outer wall of the extension plate (4); the outer wall of the meshing caliper (33) is meshingly connected to the outer wall of the plastic rack (40).

8. A medical anesthetic quantitative syringe according to claim 7, characterized in that: The bottom outer wall of the inclined plate (31) is fixedly connected to a toggle plate (34), the cross section of the toggle plate (34) being in the shape of a right-angled inverted triangle; the bottom inner wall of the quantitative holding sleeve (7) is fixedly connected to a toggle stopper (35), the top outer wall of the toggle stopper (35) being movably fitted with the bottom outer wall of the toggle plate (34); the outer wall of one side of the mounting sleeve (29) is fixedly connected to a support plate (36), the outer wall of one side of the support plate (36) being movably fitted with the outer wall of one side of the straight plate (32).

9. The quantitative syringe for medical anesthetic according to claim 8, characterized in that: An adjusting magnet (37) is fixedly mounted on one side outer wall of the straight plate (32); an annular magnetic attraction sheet (38) is fixedly mounted on the inner wall of the inner quantitative sleeve (22); the adjusting magnet (37) and the annular magnetic attraction sheet (38) repel each other magnetically; a resisting ring sheet (39) is fixedly connected to the top of the inner wall of the inner quantitative sleeve (22); the bottom outer wall of the resisting ring sheet (39) is pressed against one side of the top outer wall of the mounting sleeve (29).

10. A medical anesthetic quantitative syringe according to claim 1, characterized in that: One side outer wall of the two quantitative holding sleeves (7) is fixedly connected to a mounting plate (14), the two mounting plates (14) are in contact with each other, one side outer wall of the mounting plates (14) is fixedly connected to a magnetic attraction plate (15), and the magnetic attraction plates (15) on the two mounting plates (14) are magnetically connected to each other.

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