技术领域technical field
本发明涉及医疗器械，特别是一种麻醉科用进针装置。The invention relates to medical instruments, in particular to a needle feeding device for anesthesiology.
背景技术Background technique
麻醉作为一种辅助医疗手段，可以在短期内大大减轻或消除手术、急救等医疗过程中的疼痛感；在进行麻醉时，对于不同部位的疾病或伤害，所选择的进针位置和进针深度会有较大不同，通常，对于进针位置和深度的选择取决于麻醉师的常识和经验，而且在进行麻醉操作时需要冷静、准确的作出判断和决定，一旦位置或深度出现偏差，不仅影响麻醉效果、增加手术或治疗难度，还会给患者造成次生伤害，尤其是脊椎、腰椎等神经比较集中的部位，稍有不甚，将给患者带来严重的神经性损伤如半身不遂、运动受损等伴随一生的后遗症。As an auxiliary medical method, anesthesia can greatly reduce or eliminate the pain during surgery, emergency and other medical procedures in a short period of time. There will be big differences. Usually, the choice of needle insertion position and depth depends on the common sense and experience of the anesthesiologist, and it is necessary to make calm and accurate judgments and decisions during anesthesia operations. Once the position or depth is deviated, it will not only affect The effect of anesthesia, increasing the difficulty of surgery or treatment, will also cause secondary damage to the patient, especially the spine, lumbar spine and other parts where the nerves are concentrated. Damage and other sequelae that accompany a lifetime.
此外，在进针位置和深度都确定无误的情况下，还要求麻醉医师具备娴熟的手法和良好的沟通技巧，在进行麻醉过程中，首先要让患者肌肉放松，防止其接触注射器时过于紧张而出现肌肉僵硬或身体的抖动，因为这样会增加穿刺难度使医师难以掌握力度，也会因身体的颤抖导致穿刺位置偏移而带来安全隐患；其次，麻醉医师要掌握合适的穿刺力度和注射速度，穿刺操作必须精准无误、一步到位，注射过程中注射器应保持稳定，以免对患者身体造成损伤；显然，这样的操作要求对麻醉医师是一种很大的挑战，对于经验较少的医师而言存在较大难度，不利于手术或治疗的顺利进行。In addition, when the needle insertion position and depth are determined correctly, the anesthesiologist is also required to have skillful manipulation and good communication skills. During the anesthesia process, the patient's muscles should be relaxed first to prevent them from being too nervous when touching the syringe. Muscle stiffness or body shaking occurs, because this will increase the difficulty of puncture and make it difficult for physicians to grasp the strength, and will also cause potential safety hazards due to the shift of the puncture position due to body tremors; secondly, the anesthesiologist must master the appropriate puncture strength and injection speed. , the puncture operation must be accurate and accurate in one step, and the syringe should be kept stable during the injection process to avoid damage to the patient's body; obviously, such operation requirements are a great challenge for anesthesiologists, and for less experienced physicians There is greater difficulty, which is not conducive to the smooth progress of surgery or treatment.
发明内容SUMMARY OF THE INVENTION
针对上述情况，为弥补现有技术所存在的技术不足，本发明提供一种麻醉科用进针装置，以解决麻醉实施过程中穿刺操作难以精准定位和注射过程中难于兼顾注射器稳定的问题，为麻醉医师提供更加简单、高效、准确的辅助性帮助，进一步减少和避免可能存在的安全风险。In view of the above situation, in order to make up for the technical deficiencies in the prior art, the present invention provides a needle insertion device for anesthesiology, so as to solve the problems of difficulty in precise positioning of puncture during the implementation of anesthesia and difficulty in taking into account the stability of the syringe during the injection process. Anesthesiologists provide simpler, more efficient and more accurate auxiliary assistance, further reducing and avoiding possible safety risks.
其解决的技术方案是：包括外筒和由针筒、针头、活塞与推杆组成的注射器，所述的注射器置于外筒内侧且针筒与外筒同轴滑动连接，针筒与外筒的远离针头的一端经弹射弹簧连接；所述的针筒内侧有与针筒轴向滑动连接的盘状挡板，盘状挡板与推杆经螺纹连接；所述的盘状挡板与针筒的远离针头的一端经推液弹簧连接；所述的针筒上有置于针筒外侧的径向设置的导向块，外筒上有与导向块匹配的导向槽，导向块上有径向滑动的楔块，楔块的楔形端滑动贯穿针筒而置于针筒内侧，楔块与导向块经弹簧连接，楔块用于阻挡盘状挡板向针头方向的滑动；所述的楔块上有轴向贯穿楔块的通孔，外筒上有与导向槽的靠近针头的一端对应的楔形顶杆，楔形顶杆与通孔相匹配，当针筒滑动至楔块与楔形顶杆接触时，楔形顶杆插入通孔并对通孔的侧壁产生挤压，从而使楔形块产生离心滑动；所述的外筒上有螺栓，螺栓螺接于外筒上并贯穿外筒的筒壁，当螺栓旋紧时，螺栓与针筒产生挤压接触，实现针筒的定位。The technical solution of the invention is as follows: comprising an outer cylinder and a syringe composed of a needle cylinder, a needle, a piston and a push rod, the syringe is placed inside the outer cylinder and the needle cylinder and the outer cylinder are coaxially slidably connected, and the syringe cylinder and the outer cylinder are connected in a coaxial sliding manner. The end away from the needle is connected by an ejection spring; the inner side of the needle cylinder has a disc-shaped baffle that is axially slidably connected to the needle cylinder, and the disc-shaped baffle and the push rod are threadedly connected; the disc-shaped baffle and the needle The end of the cylinder away from the needle head is connected by a push spring; the needle cylinder is provided with a radially arranged guide block placed on the outside of the needle cylinder, the outer cylinder has a guide groove matched with the guide block, and the guide block has radial Sliding wedge, the wedge end of the wedge slides through the needle cylinder and is placed inside the needle cylinder, the wedge is connected with the guide block by a spring, and the wedge is used to block the sliding of the disc-shaped baffle towards the needle; the wedge There is a through hole that penetrates the wedge in the axial direction, and the outer cylinder has a wedge-shaped ejector rod corresponding to the end of the guide groove close to the needle head. The wedge-shaped ejector rod matches the through hole. When the wedge-shaped ejector rod is inserted into the through hole and squeezes the side wall of the through hole, the wedge-shaped block produces centrifugal sliding; there are bolts on the outer cylinder, and the bolts are screwed on the outer cylinder and penetrate the cylinder wall of the outer cylinder. , When the bolt is tightened, the bolt and the needle cylinder will be in extrusion contact to realize the positioning of the needle cylinder.
本发明结构紧凑，操作简单，将穿刺和注射进行有机结合，使得穿刺操作和注射操作无缝衔接，不需要医护人员手动干预，大大提高了麻醉操作的效率；同时，本发明利用弹射弹簧进行针筒的弹射并可对穿刺深度进行精准调节，穿刺速度更快，穿刺深度精准，有效减少了穿刺过程中患者的不适感，降低了由此带来的风险，在弹射弹簧的弹力作用下，即使患者紧张而导致肌肉僵硬，也可保证一次性穿刺至准确深度，不必担心穿刺失败；在穿刺之前，外筒与患者身体充分接触，使患者可以更好地感受和适应器械带来的异物感，在一定程度上缓解其紧张情绪；本发明还可对抽药剂量进行提前调节，利用螺纹传动使调节更加精准和便捷，减少药物的浪费。The present invention has compact structure and simple operation, and organically combines puncture and injection, so that the puncture operation and the injection operation are seamlessly connected, and no manual intervention of medical staff is required, which greatly improves the efficiency of anesthesia operation; The ejection of the barrel can accurately adjust the puncture depth, the puncture speed is faster, and the puncture depth is accurate, which effectively reduces the discomfort of the patient during the puncture process and reduces the risk caused thereby. Under the elastic force of the ejection spring, even if The patient is tense and causes muscle stiffness, and it can also ensure that the puncture to an accurate depth at one time, without worrying about the failure of the puncture; To a certain extent, the tension is relieved; the present invention can also adjust the dose of the medicine in advance, and the screw drive is used to make the adjustment more accurate and convenient, and reduce the waste of medicine.
附图说明Description of drawings
图1为本发明的主视图。FIG. 1 is a front view of the present invention.
图2为本发明的A-A剖视图。Figure 2 is an A-A sectional view of the present invention.
图3为本发明的图1中B部分的放大图。FIG. 3 is an enlarged view of part B in FIG. 1 of the present invention.
图4为本发明的轴测剖视图。Figure 4 is an axonometric sectional view of the present invention.
图5为本发明的立体图。FIG. 5 is a perspective view of the present invention.
图6为本发明的针筒弹射完成穿刺后的状态图。FIG. 6 is a state diagram of the syringe of the present invention after the puncture is completed by ejection.
图7为本发明的活塞进行推液注射时的状态图。FIG. 7 is a state diagram when the piston of the present invention performs push liquid injection.
具体实施方式Detailed ways
以下结合附图对本发明的具体实施方式作进一步详细说明。The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
由图1至图7给出，本发明包括外筒1和由针筒2、针头3、活塞4与推杆5组成的注射器，所述的注射器置于外筒1内侧且针筒2与外筒1同轴滑动连接，针筒2与外筒1的远离针头3的一端经弹射弹簧6连接，针筒2在弹射弹簧6的弹力作用下滑动使针头3迅速弹出而完成穿刺动作；所述的针筒2内侧有与针筒2轴向滑动连接的盘状挡板7，盘状挡板7置于活塞4的远离针头3的一侧，盘状挡板7与推杆5经螺纹连接，当推杆5在针筒2上轴向移动时，盘状挡板7随推杆5同时移动，当推杆5沿自身轴线转动时，盘状挡板7与推杆5之间产生螺纹传动使二者产生轴向相对位移，从而改变活塞4与盘状挡板7的距离以实现药液抽取量的调节；所述的盘状挡板7与针筒2的远离针头3的一端经推液弹簧8连接，盘状挡板7在推液弹簧8的弹力作用下滑动并带动推杆5与活塞4同时向针头3方向滑动，从而完成推液注射动作；所述的针筒2上有置于针筒2外侧的径向设置的导向块9，外筒1上有与导向块9匹配的轴向设置的导向槽10，导向块9滑动置于导向槽10内，导向块9上有径向滑动的楔块11，楔块11的楔形端滑动贯穿针筒2的筒壁而置于针筒2内侧，楔块11与导向块9经径向设置的弹簧12连接，楔块11用于阻挡盘状挡板7向针头3方向的滑动：当盘状挡板7向远离针头3方向滑动并与楔块11接触时，楔块11的楔形端受到盘状凸轮7的挤压而离心滑动，当盘状凸轮7越过楔块11位置后，楔块11在弹簧12的弹力作用下迅速复位而将盘状凸轮7挡止使盘状凸轮7无法向针头3方向滑动，也即活塞4和推杆5无法进行推液注射动作；所述的楔块11上有沿针筒2的轴向贯穿楔块11的通孔13，外筒1上有与导向槽10的靠近针头3的一端对应的轴向设置的楔形顶杆14，楔形顶杆14与通孔13相匹配，当针筒2滑动至楔块11与楔形顶杆14接触时，楔形顶杆14插入通孔13并对通孔13的侧壁产生挤压，从而使楔形块11产生离心滑动，进而使楔块11的楔形端与盘状挡板7分离以解除对盘状挡板7的阻挡，则盘状挡板7在推液弹簧8的弹力作用下向针头3方向滑动；所述的外筒1上有置于外筒1外侧的径向设置的螺栓15，螺栓15螺接于外筒1上并贯穿外筒1的筒壁，当螺栓15旋紧时，螺栓15与针筒2产生挤压接触，实现针筒2的定位。1 to 7, the present invention includes an outer cylinder 1 and a syringe composed of a syringe 2, a needle 3, a piston 4 and a push rod 5, and the syringe is placed inside the outer cylinder 1 and the syringe 2 is connected to the outer cylinder. The barrel 1 is coaxially slidingly connected, the end of the needle barrel 2 and the outer barrel 1 away from the needle 3 is connected by an ejection spring 6, and the syringe 2 slides under the elastic force of the ejection spring 6 to make the needle 3 pop up quickly to complete the puncturing action; The inner side of the needle cylinder 2 has a disk-shaped baffle 7 which is axially slidably connected with the needle cylinder 2. The disk-shaped baffle 7 is placed on the side of the piston 4 away from the needle 3, and the disk-shaped baffle 7 is connected with the push rod 5 through threads. , when the push rod 5 moves axially on the needle cylinder 2, the disc-shaped baffle 7 moves with the push rod 5 at the same time, and when the push rod 5 rotates along its own axis, a thread is generated between the disc-shaped baffle 7 and the push rod 5 The transmission causes the two to produce axial relative displacement, thereby changing the distance between the piston 4 and the disc-shaped baffle 7 to realize the adjustment of the extraction amount of the medicinal liquid; the disc-shaped baffle 7 and the end of the needle cylinder 2 away from the needle 3 The push spring 8 is connected, and the disc-shaped baffle 7 slides under the elastic force of the push spring 8 and drives the push rod 5 and the piston 4 to slide in the direction of the needle 3 at the same time, thereby completing the push injection action; There is a radially arranged guide block 9 placed on the outside of the needle cylinder 2, and the outer cylinder 1 has an axially arranged guide groove 10 matching the guide block 9, the guide block 9 is slidably placed in the guide groove 10, and the guide block 9 is on the There is a radially sliding wedge 11. The wedge-shaped end of the wedge 11 slides through the cylinder wall of the needle cylinder 2 and is placed inside the needle cylinder 2. The wedge 11 is connected to the guide block 9 through a radially arranged spring 12. The wedge 11 It is used to block the sliding of the disc-shaped baffle 7 in the direction of the needle 3: when the disc-shaped baffle 7 slides away from the needle 3 and contacts with the wedge 11, the wedge-shaped end of the wedge 11 is squeezed by the disc-shaped cam 7. Centrifugal sliding, when the disc cam 7 crosses the position of the wedge 11, the wedge 11 quickly resets under the elastic force of the spring 12 and stops the disc cam 7 so that the disc cam 7 cannot slide in the direction of the needle 3, that is, the piston 4 and the push rod 5 cannot carry out the liquid pushing injection action; the wedge block 11 has a through hole 13 that penetrates the wedge block 11 along the axial direction of the needle cylinder 2, and the outer cylinder 1 has a guide groove 10 close to the needle head 3. A wedge-shaped ejector rod 14 corresponding to one end is axially arranged, and the wedge-shaped ejector pin 14 is matched with the through hole 13. When the needle cylinder 2 slides until the wedge block 11 is in contact with the wedge-shaped ejector pin 14, the wedge-shaped ejector pin 14 is inserted into the through hole 13. The side wall of the through hole 13 is squeezed, so that the wedge-shaped block 11 is centrifugally slid, and the wedge-shaped end of the wedge-shaped block 11 is separated from the disc-shaped baffle 7 to release the blocking of the disc-shaped baffle 7, then the disc-shaped baffle 7. Slides in the direction of needle 3 under the elastic force of the pushing spring 8; the outer cylinder 1 is provided with radially arranged bolts 15 on the outside of the outer cylinder 1, and the bolts 15 are screwed on the outer cylinder 1 and penetrate through the outer cylinder 1. On the cylinder wall of the cylinder 1 , when the bolt 15 is tightened, the bolt 15 is in pressing contact with the needle cylinder 2 to realize the positioning of the needle cylinder 2 .
作为优选，所述的外筒1上有套设于外筒1外侧的圆环16和螺接于外筒1外侧的第一螺母17，圆环16与外筒1经附图4、5所示的滑轨滑槽机构轴向滑动连接，楔形顶杆14置于圆环16上，第一螺母17与圆环16同轴转动连接，由于螺纹的传动作用和自锁作用，当第一螺母17在外筒1上转动而产生螺纹传动时，圆环16随第一螺母17产生轴向位移并带动楔形顶杆14同时运动，实现楔形顶杆14的位置改变和任意位置的可靠停止，从而改变了通孔13与楔形顶杆14间的距离，也即改变了盘状挡板7的解锁时间，使推液注射提前或延后进行；同时，在圆环16和第一螺母17的阻挡作用下，针筒2弹射至导向块9与圆环16或第一螺母17接触时，针筒2的移动受到圆环16或第一螺母17的阻挡而停止，因而第一螺母17的螺纹传动还可使针筒2的弹射距离产生改变，也即改变了针头3的穿刺深度；推液注射时间与穿刺深度的同步调节可以保证推液注射的时效性。Preferably, the outer cylinder 1 is provided with a ring 16 sleeved on the outer side of the outer cylinder 1 and a first nut 17 screwed on the outer side of the outer cylinder 1. The ring 16 and the outer cylinder 1 are shown in Figures 4 and 5. The shown slide rail and chute mechanism are axially slidably connected, the wedge-shaped ejector rod 14 is placed on the ring 16, and the first nut 17 is coaxially connected to the ring 16. Due to the transmission effect and self-locking effect of the thread, when the first nut When 17 rotates on the outer cylinder 1 to generate threaded transmission, the ring 16 generates axial displacement with the first nut 17 and drives the wedge-shaped ejector rod 14 to move at the same time, so as to realize the position change of the wedge-shaped ejector rod 14 and the reliable stop at any position, thereby changing the position of the wedge-shaped ejector rod 14. The distance between the through hole 13 and the wedge-shaped ejector rod 14 is changed, that is, the unlocking time of the disc-shaped baffle 7 is changed, so that the push liquid injection can be carried out in advance or later; at the same time, the blocking effect of the ring 16 and the first nut 17 When the needle cylinder 2 is ejected until the guide block 9 is in contact with the ring 16 or the first nut 17, the movement of the needle cylinder 2 is blocked by the ring 16 or the first nut 17 and stops, so the threaded transmission of the first nut 17 is further The ejection distance of the syringe 2 can be changed, that is, the puncture depth of the needle 3 is changed; the synchronous adjustment of the injection time and the puncture depth can ensure the timeliness of the injection.
作为优选，所述的外筒1的与针头3对应的一端有置于外筒1内侧的挡止环18和同轴螺接于外筒1上的第二螺母19，挡止环18上有径向向外贯穿外筒1的多个滑块20，外筒1上有与滑块20一一匹配的多个滑槽21，滑块20的外端部与第二螺母19经一滑环沿第二螺母19的轴线转动连接，由于螺纹的传动作用和自锁作用，当第二螺母19在外筒1上转动而产生螺纹传动时，滑块20随第二螺母19产生轴向位移并带动挡止环18同时运动，实现挡止环18的位置改变和任意位置的可靠停止，而由于挡止环18对针筒2产生阻挡作用，因而第二螺母19的螺纹传动可使针筒2的弹射距离产生改变，也即改变了针头3的穿刺深度；所述的楔形顶杆14与外筒1轴向滑动连接并与第二螺母19转动连接，从而实现推液注射开始时间与穿刺深度的同步调节，保证推液注射的时效性。Preferably, the end of the outer cylinder 1 corresponding to the needle 3 has a stop ring 18 placed inside the outer cylinder 1 and a second nut 19 coaxially screwed on the outer cylinder 1. The stop ring 18 has The plurality of sliding blocks 20 of the outer cylinder 1 penetrate radially outward. The outer cylinder 1 has a plurality of sliding grooves 21 that match the sliding blocks 20 one by one. The outer end of the sliding block 20 and the second nut 19 pass through a slip ring. The connection is rotated along the axis of the second nut 19. Due to the transmission and self-locking effect of the thread, when the second nut 19 rotates on the outer cylinder 1 to generate thread transmission, the slider 20 is axially displaced with the second nut 19 and drives The stop ring 18 moves at the same time to realize the position change of the stop ring 18 and the reliable stop at any position, and because the stop ring 18 blocks the needle cylinder 2, the thread transmission of the second nut 19 can make the needle cylinder 2 move. The ejection distance is changed, that is, the puncture depth of the needle 3 is changed; the wedge-shaped ejector rod 14 is axially slidably connected with the outer cylinder 1 and is rotatably connected with the second nut 19, so as to realize the difference between the injection start time and the puncture depth. Synchronous adjustment ensures the timeliness of push liquid injection.
作为优选，所述的外筒1的与针头3对应的一端为外扩式喇叭开口结构，以便于与身体良好接触并提高接触时的稳定性。Preferably, the end of the outer cylinder 1 corresponding to the needle 3 is an outwardly flared horn opening structure, so as to facilitate good contact with the body and improve the stability during contact.
作为优选，所述的外筒1和针筒2的远离针头3的一端为封闭端，推杆5依次滑动贯穿所述外筒1和针筒2的的封闭端，以保证推杆5轴向移动的方向性；所述外筒1和针筒2的封闭端分别开设有第一排气孔22和第二排气孔23，以降低或消除气压对针筒2和活塞4的移动的影响。Preferably, the ends of the outer cylinder 1 and the needle cylinder 2 away from the needle 3 are closed ends, and the push rod 5 slides through the closed ends of the outer cylinder 1 and the needle cylinder 2 in sequence to ensure that the push rod 5 is axially The directionality of movement; the closed ends of the outer cylinder 1 and the needle cylinder 2 are respectively provided with a first exhaust hole 22 and a second exhaust hole 23 to reduce or eliminate the influence of air pressure on the movement of the needle cylinder 2 and the piston 4 .
作为优选，所述的活塞4与推杆5转动连接，针筒2的内侧壁有多个轴向设置的滑轨24，活塞4和盘状挡板7的外缘面上分别有与滑轨24一一匹配的多个导槽25，滑轨24与导槽25的滑动配合实现了盘状挡板7与针筒2的轴向滑动连接，从而保证推杆5的转动不会影响盘状挡板7和活塞4的旋转姿态，减少对针筒2和其他部件的磨损，利于维持活塞4的密封性能。Preferably, the piston 4 is rotatably connected to the push rod 5, the inner side wall of the needle cylinder 2 has a plurality of axially arranged slide rails 24, and the outer edge surfaces of the piston 4 and the disc-shaped baffle 7 are respectively provided with slide rails 24 A plurality of guide grooves 25 matched one by one, the sliding cooperation of the slide rail 24 and the guide groove 25 realizes the axial sliding connection of the disc-shaped baffle 7 and the needle cylinder 2, so as to ensure that the rotation of the push rod 5 will not affect the disc-shaped The rotating posture of the baffle 7 and the piston 4 reduces the wear on the needle cylinder 2 and other components, and is beneficial to maintain the sealing performance of the piston 4 .
作为优选，所述的挡止环18的靠近针筒2的一侧有缓冲垫26，避免针筒2弹射时的冲击力造成部件损坏。Preferably, a buffer pad 26 is provided on the side of the stop ring 18 close to the needle cylinder 2 to avoid damage to the components caused by the impact force when the needle cylinder 2 is ejected.
作为优选，所述的推杆5的远离针筒2的一端有置于外筒1外部的推柄27。Preferably, the end of the push rod 5 away from the needle cylinder 2 has a push handle 27 placed outside the outer cylinder 1 .
作为优选，所述的第一螺母17和第二螺母19经多个直杆28相连接，藉由第一螺母17与楔形顶杆14间的转动连接实现第二螺母19与楔形顶杆14间的转动连接。Preferably, the first nut 17 and the second nut 19 are connected through a plurality of straight rods 28, and the second nut 19 and the wedge-shaped ejector rod 14 are realized by the rotational connection between the first nut 17 and the wedge-shaped ejector rod 14. rotation connection.
本发明使用时，旋转推柄27使推杆5转动并推动活塞4滑动，盘状挡板7与活塞4之间产生距离变化，按照需求将活塞4移动至合适位置完成剂量调节；旋转第一螺母17或第二螺母19完成穿刺深度和推液注射开始时间的同步调节；旋松螺栓15使针筒2弹射并解锁盘状挡板7，则活塞4滑动至针头3连接位置，针筒2内部空气被排空；旋紧螺栓15使针筒2定位在当前位置，将针头3刺入药液中，拉动推柄27进行抽药操作并排空剩余空气，由于药液剂量已提前设定，因此当抽药结束后盘状挡板7刚好位于待锁定位置；再次旋松螺栓15使针筒2解锁，继续拉动推柄27使针筒2回缩，通孔13与楔形顶杆14分离，盘状挡板7被弹入针筒2内侧的楔块11挡止；当针头3完全进入外筒1内，停止拉动推柄27并旋紧螺栓15，针筒2被定位于当前位置。When the present invention is used, rotating the push handle 27 makes the push rod 5 rotate and pushes the piston 4 to slide, the distance between the disc-shaped baffle 7 and the piston 4 changes, and the piston 4 is moved to an appropriate position to complete the dose adjustment as required; The nut 17 or the second nut 19 completes the synchronous adjustment of the puncture depth and the injection start time; loosen the bolt 15 to eject the syringe 2 and unlock the disc-shaped baffle 7, then the piston 4 slides to the connecting position of the needle 3, and the syringe 2 The internal air is evacuated; tighten the bolt 15 to position the syringe 2 at the current position, pierce the needle 3 into the medicinal solution, pull the push handle 27 to perform a medicinal extraction operation and empty the remaining air, since the medicinal solution dose has been set in advance Therefore, when the medicine is drawn, the disc-shaped baffle 7 is just in the position to be locked; loosen the bolt 15 again to unlock the syringe 2, continue to pull the push handle 27 to retract the syringe 2, and the through hole 13 is separated from the wedge-shaped ejector rod 14. , the disc-shaped baffle 7 is blocked by the wedge 11 which is inserted into the inner side of the needle cylinder 2; when the needle head 3 completely enters the outer cylinder 1, stop pulling the push handle 27 and tighten the bolt 15, and the needle cylinder 2 is positioned at the current position.
当进行药物注射时，将外筒1的喇叭开口扣在患者需要注射部位，使针头3对准穿刺位置，在此过程中，外筒1与患者肌肤接触时不必担心患者出现颤抖等情况，使患者有一个良好的适应过程，消除紧张感；待患者逐渐适应后扶稳外筒1，旋松螺栓15，针筒2在弹射弹簧6的弹力作用下迅速向患者身体方向弹出，使针头3准确穿刺进患者身体；当弹射至预定穿刺深度后，楔形顶杆14进入通孔13使楔块11离心滑动，盘状挡板7被解锁，在推液弹簧8的弹力作用下，盘状挡板7向患者身体方向滑动并经推杆5带动活塞4同时滑动，将药液缓慢注射进患者体内，完成注射过程。When performing drug injection, buckle the horn opening of the outer cylinder 1 to the patient's injection site, so that the needle 3 is aligned with the puncture position. The patient has a good adaptation process to eliminate tension; after the patient gradually adapts, stabilize the outer cylinder 1, loosen the bolt 15, and the needle cylinder 2 quickly pops out towards the patient's body under the elastic force of the ejection spring 6, so that the needle 3 is accurate. Puncture into the patient's body; when ejected to the predetermined puncture depth, the wedge-shaped ejector rod 14 enters the through hole 13 to make the wedge 11 slide centrifugally, the disc-shaped baffle 7 is unlocked, and under the elastic force of the push spring 8, the disc-shaped baffle 7 Slide toward the patient's body and drive the piston 4 to slide at the same time through the push rod 5, slowly inject the medicinal liquid into the patient's body, and complete the injection process.
整个穿刺与注射过程中，不需要医护人员进行其他操作，只需专心扶稳外筒1即可，从而使穿刺精度和注射效率大大提高。During the entire puncture and injection process, no other operations are required by medical staff, and only the outer cylinder 1 can be stabilized, thereby greatly improving the puncture accuracy and injection efficiency.
注射结束后，直接向外移动外筒1即可将针头3拔出患者体外，且在当前状态下再次旋紧螺栓15即可进行下一次使用。After the injection is completed, the needle 3 can be pulled out of the patient's body by directly moving the outer cylinder 1 outward, and the bolt 15 can be tightened again in the current state for the next use.
本发明结构紧凑，操作简单，将穿刺和注射进行有机结合，使得穿刺操作和注射操作无缝衔接，大大提高了麻醉操作的效率；同时，由于不需要医护人员手动干预，因此医护人员可专心于维持外筒的位置，还可与患者放心进行交流以减少其紧张感和恐惧感。The invention has compact structure and simple operation, and organically combines puncture and injection, so that the puncture operation and the injection operation are seamlessly connected, and the efficiency of anesthesia operation is greatly improved; at the same time, since the manual intervention of medical personnel is not required, medical personnel can concentrate on Maintain the position of the external cylinder and also communicate with the patient at ease to reduce tension and fear.
本发明利用弹射弹簧进行针筒的弹射，穿刺速度更快，穿刺深度精准，有效减少了穿刺过程中患者的不适感，降低了由此带来的风险；在穿刺之前，外筒与患者身体充分接触，使患者可以更好地感受和适应器械带来的异物感，在一定程度上缓解其紧张情绪。The invention utilizes the ejection spring to eject the needle cylinder, the puncture speed is faster, the puncture depth is accurate, the discomfort of the patient during the puncture process is effectively reduced, and the resulting risk is reduced; Contact, so that patients can better feel and adapt to the foreign body sensation brought by the device, and relieve their tension to a certain extent.
本发明可以对抽药剂量进行提前调节，利用螺纹传动使调节更加精准和便捷，省去了抽药时频繁读取刻度，可消除药液抽取过多的情况，减少药物的浪费。The invention can adjust the dosage of the medicine in advance, and the adjustment is more accurate and convenient by using the screw drive, which saves the frequent reading of the scale when the medicine is drawn, can eliminate the situation of excessive extraction of the medicine liquid, and reduce the waste of the medicine.
本发明可对穿刺深度进行精准调节，在弹射弹簧的弹力作用下，即使患者紧张而导致肌肉僵硬，也可保证一次性穿刺至准确深度，不必担心穿刺失败而进行多次穿刺，既减轻了医护人员的劳动强度和心理负担，也避免了对患者身体造成的多次伤害。The invention can accurately adjust the puncture depth, and under the elastic force of the ejection spring, even if the patient is tense and the muscles are stiff, the puncture can be guaranteed to an accurate depth at one time, and there is no need to worry about the failure of the puncture and repeated punctures, which not only reduces the need for medical care The labor intensity and psychological burden of the personnel also avoids multiple injuries to the patient's body.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367787.8ACN109999279B (en) | 2019-05-05 | 2019-05-05 | Needle inserting device for anesthesia department |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367787.8ACN109999279B (en) | 2019-05-05 | 2019-05-05 | Needle inserting device for anesthesia department |
| Publication Number | Publication Date |
|---|---|
| CN109999279Atrue CN109999279A (en) | 2019-07-12 |
| CN109999279B CN109999279B (en) | 2021-04-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910367787.8AExpired - Fee RelatedCN109999279B (en) | 2019-05-05 | 2019-05-05 | Needle inserting device for anesthesia department |
| Country | Link |
|---|---|
| CN (1) | CN109999279B (en) |
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