Anesthetic quantifying device for laparoscopic surgery of elderly patients

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to an anesthetic quantifying device for laparoscopic surgery of elderly patients. Comprising a micro-injection pump body with a storage groove, a pull rod is installed on the micro-injection pump body in a sliding mode, the end of the pull rod is connected with a push block, the side wall of the micro-injection pump body is fixedly connected with a side plate, the side plate is connected with a cross rod, the cross rod is parallel to the pull rod, and the push block is connected with the pull rod. The transverse rod and the pull rod are located on the two sides of the movement path of the push block respectively, and when the pull rod pulls the push block to move horizontally, the push block slides on the transverse rod. The end part of the cross rod is connected with a pressing block which is pressed towards the interior of the storage groove; a storage groove is formed in the micro-injection pump body; through the arrangement of the cross rod, deflection torque applied by the pull rod can be effectively balanced, so that the acting force of the push block on the push rod of the injector is more uniform, the uniformity of anesthetic output is finally improved, and meanwhile, the fixing and unloading operation of the injector can be simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary devices, in particular to a narcotic drug quantifying device for laparoscopic surgery of elderly patients. BACKGROUND

[0002] For elderly patients receiving laparoscopic surgery, anesthesiologists usually use a micro-injection pump to continuously and accurately infuse narcotic drugs; this is because the physiological functions of the elderly are declining, and the metabolism and tolerance of narcotic drugs change, both sufficient anesthesia depth is needed to ensure smooth surgery, and drug overdose must be avoided to cause severe fluctuations in circulation or delayed recovery; the micro-injection pump can continuously inject key drugs such as narcotic drugs into the patient's body at a constant and accurate flow rate, thereby achieving a stable and controllable anesthesia state, which is an important link to ensure the safety of surgery for elderly patients with weak body function compensation.

[0003] However, the existing micro-injection pump, when working, is usually driven by a eccentrically arranged push rod to push the plunger, and then push the piston of the syringe. This mechanical structure causes the force exerted by the plunger on the end of the syringe piston to not always be collinear with the axis of the syringe push rod, thereby generating a small eccentric force, and the longer the piston rod of the syringe is extended, the more obvious this phenomenon is, which can easily cause small stalls in the movement of the piston and fluctuations in the flow rate. As a result, the flowing drug solution of the syringe appears small fluctuations when pushing the drug solution, although this fluctuation has little effect on ordinary patients, but for elderly patients with poor physiological compensation ability, this small flow rate fluctuation still affects the accuracy and safety of anesthesia. SUMMARY

[0004] The present application provides a narcotic drug quantifying device for laparoscopic surgery of elderly patients, which can assist in supporting the two sides of the plunger through the cross bar, thereby solving the problem of small eccentric force generated by the plunger, which causes small fluctuations in the flowing drug solution.

[0005] To achieve the above purpose, the narcotic drug quantifying device for laparoscopic surgery of elderly patients comprises a micro-injection pump body with a storage groove, a pull rod is slidably installed on the micro-injection pump body, a push block is connected to the end of the pull rod, a side plate is fixedly connected to the side wall of the micro-injection pump body, a cross bar is connected to the side plate, the cross bar is parallel to the pull rod, and the cross bar and the pull rod are located on both sides of the movement path of the push block, respectively, when the pull rod pulls the push block to translate, the push block slides on the cross bar; the end of the cross bar is connected to a pressing block that presses into the storage groove, a receiving groove is formed in the micro-injection pump body, the cross bar is connected with the push block through a connecting part, and the connecting part is used to drive the pressing block to move into or move reversely into the receiving groove.

[0006] In the above technical scheme, the connecting part comprises an end cover rotatably sleeved on the end of the push block, a lateral wall of the end cover is provided with a transverse groove, the transverse rod slides in the transverse groove, a short shaft is rotatably connected to the lateral wall of the side plate, a disc is fixedly installed on the short shaft, the end of the transverse rod is fixedly connected to the shaft end of the disc, and a first torsional spring is installed between the short shaft and the side plate, so as to facilitate adjustment of the use state of the push block.

[0007] Based on the above, the end of the transverse rod is provided with a sliding hole, a supporting block is slidably installed in the sliding hole, a flat plate is fixedly connected to the supporting block, a spring is installed between the flat plate and the transverse rod, and the pressing block is installed on the supporting block, so as to ensure that the pressing block can fix the syringe.

[0008] Secondly, two symmetrical clamping rods are rotatably installed on the push block through a rotating rod, the end of the rotating rod extends into the end cover and is fixedly installed with a gear, the two gears are meshingly connected to each other, a second torsional spring is installed between one of the gears and the push block, an L-shaped rod is fixedly connected to one of the gears, and an inner wall of the end cover is fixedly connected with a stand column for pushing the L-shaped rod, so as to facilitate fixing of the syringe push rod.

[0009] Further, a rotating pipe is rotatably installed on the stand column, and the outer wall of the rotating pipe is attached to the outer wall of the L-shaped rod, so as to reduce the resistance between the stand column and the L-shaped rod.

[0010] Therefore, through the arrangement of the transverse rod, the deflection torque exerted by the pull rod can be effectively balanced, the force of the push block on the syringe push rod is more uniform, and finally the uniformity of the output of the anesthetic is improved, and meanwhile, the fixing and unloading operations of the syringe are simplified.

[0011] Compared with the prior art, the beneficial effects of the present application are: In the anesthetic quantifying device for laparoscopic surgery of elderly patients, the push block is synchronously slid along the transverse rod during pushing the syringe push rod, the transverse rod provides an additional support point for the push block because the transverse rod and the pull rod are respectively located on the two sides of the syringe push rod, the deflection torque exerted by the pull rod is effectively balanced, the force of the push block on the syringe push rod is more uniform, and finally the uniformity of the output of the anesthetic is improved.

[0012] 2. In the anesthetic quantifying device for laparoscopic surgery of elderly patients, the disc is rotated downward until the pressing block at the end of the transverse rod is accommodated in the accommodation groove, and then the disc is stopped, in this state, the transverse rod does not block the front of the storage groove and the pull rod, so as to facilitate the storage or taking out of the syringe in the storage groove by medical staff; after the storage is completed, the disc is loosened, and the pressing block automatically presses the syringe into the storage groove, so that the fixing work of the syringe can be quickly realized, and the operation is more convenient and efficient.

[0013] 3、the anesthetic for the laparoscopic surgery of old patients quantitative device, through the end cap of rotation will drive the column synchronous rotation, the two gear wheels of mutual engagement through the rotating rod drive two clamping rod deflection away, at this moment adjust the position of push block, make the push rod of syringe top on push block, then make the compression block reset, the end cap will reverse, the L-shaped rod overcomes the elastic force of the second torsional spring and makes the gear reverse, two clamping rods will again be close to each other and hold the push rod of syringe, that is, the fixed work of syringe push rod can be realized quickly. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the structure schematic diagram of the present application in use state; Figure 3 It is the structure schematic diagram of the present application in use state; Figure 4 It is the partial exploded view of the present application; Figure 5 It is the left view structure schematic diagram of the push block of the present application; Figure 6 It is the sectional structure schematic diagram of the end cap of the present application; Figure 7 It is the partial structure schematic diagram of the present application; Figure 8 It is the Figure 7 Structure schematic diagram of A part in the present application.

[0015] The meaning of each mark in the figure is as follows: 1, micro-injection pump body;2, storage groove;3, pull rod;4, push block;5, chamfer;6, side plate;7, short shaft;8, disc;9, first torsional spring;10, crossbar;11, end cap;12, cross groove;13, compression block;14, sliding hole;15, support block;16, flat plate;17, spring;18, arc-shaped rod;19, guide groove;20, storage groove;21, rotating rod;22, clamping rod;23, gear;24, L-shaped rod;25, column;26, rotating tube;27, second torsional spring;28, handle. DETAILED DESCRIPTION

[0016] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Because existing micro-injection pumps typically use an eccentrically positioned plunger to drive the plunger during operation, this mechanical structure causes the force applied by the plunger to the end of the syringe piston to not always remain collinear with the axis of the syringe plunger. This results in a small eccentric force, which can easily cause minor jamming of the piston movement and flow rate fluctuations.

[0018] Therefore, in view of the above-mentioned problems, the present invention provides an anesthetic drug dosing device for laparoscopic surgery in elderly patients, with reference to... Figures 1-3 As shown, the device includes a micro-injection pump body 1 with a storage slot 2 for storing syringes. A pull rod 3 is slidably mounted on the micro-injection pump body 1. The micro-injection pump body 1 is equipped with a drive source that drives the pull rod 3 to slide left and right. The end of the pull rod 3 is connected to a push block 4 that pushes the syringe plunger. A side plate 6 is fixedly connected to the side wall of the micro-injection pump body 1. A crossbar 10 is connected to the side plate 6. The crossbar 10 is parallel to the pull rod 3. Both the crossbar 10 and the pull rod 3 have a flat cross-sectional shape to reduce the space occupied by both. The crossbar 10 and the pull rod 3 are located on both sides of the movement path of the push block 4, specifically at the front and rear sides. When the pull rod 3 pulls the push block 4 to move, the push block 4 slides on the crossbar 10.

[0019] In use, the syringe is fixed in the storage slot 2, and then the plunger 4 is driven by the pull rod 3 to push the syringe plunger, thus realizing the quantitative injection of anesthetic. During this process, the plunger 4 will slide along the crossbar 10. Since the crossbar 10 and the pull rod 3 are located on both sides of the syringe plunger, the crossbar 10 provides an additional support point for the plunger 4. This effectively balances the deflection torque applied by the pull rod 3, making the force of the plunger 4 on the syringe plunger more uniform, and ultimately improving the uniformity of anesthetic output.

[0020] Reference Figures 1-4 The end of the crossbar 10 is connected to a pressure block 13 that presses against the storage slot 2. The pressure block 13 is used to press the syringe into the storage slot 2. The micro-injection pump body 1 has a storage slot 20 for storing the pressure block 13. The crossbar 10 is connected to the push block 4 through a connecting part. The connecting part is used to drive the pressure block 13 to move into the storage slot 20 or move back to reset. The connecting part includes an end cap 11 that is rotatably sleeved on the end of the push block 4. The side wall of the end cap 11 has a transverse groove 12. The crossbar 10 slides laterally in the transverse groove 12. The side wall of the side plate 6 is rotatably connected to a short shaft 7. A disc 8 is fixedly installed on the short shaft 7. The end of the crossbar 10 is fixedly connected to the shaft end of the disc 8. A first torsion spring 9 is installed between the short shaft 7 and the side plate 6. The first torsion spring 9 is used to make the short shaft 7 have a reaction force when rotating. A handle 28 is fixedly installed on the outer wall of the end cap 11.

[0021] Based on the above settings, when the push block 4 moves horizontally, the push block 4 will drive the end cover 11 to move synchronously, and the end cover 11 will slide on the crossbar 10 through the transverse groove 12, thereby supporting and guiding the push block 4.

[0022] Before retrieving or storing a syringe from storage slot 2, rotate disc 8 downwards. Disc 8 will cause short shaft 7 to rotate. Short shaft 7 twists the first torsion spring 9, simultaneously causing crossbar 10 and end cap 11 to rotate synchronously until the pressure block 13 at the end of crossbar 10 is stored in storage slot 20. Then, stop rotating disc 8. In this state, crossbar 10 no longer obstructs the storage slot 2 and the front of pull rod 3, making it easier for medical personnel to store or retrieve syringes from storage slot 2. After storage, release disc 8. The first torsion spring 9 will cause disc 8, end cap 11, and crossbar 10 to rotate in the opposite direction to reset. Pressure block 13 will automatically press the syringe into storage slot 2, quickly securing the syringe and making the operation more convenient and efficient.

[0023] In another embodiment, reference is made to Figure 3 By pushing the handle 28 downward, the handle 28 can drive the end cover 11 to rotate. As the active component, the end cover 11 can drive the disc 8 to rotate through the crossbar 10.

[0024] Reference Figure 3 and Figure 4 A sliding hole 14 is provided at the end of the crossbar 10. A support block 15 is slidably installed in the sliding hole 14. A plate 16 is fixedly connected to the support block 15. The plate 16 is parallel to the crossbar 10. A spring 17 is installed between the plate 16 and the crossbar 10. A pressure block 13 is installed on the support block 15.

[0025] When the syringe is fixed, the elastic force of the spring 17 will cause the support block 15 to push towards the syringe, and the support block 15 will elastically press the pressure block 13 against the outer wall of the syringe.

[0026] Reference Figure 3 and Figure 4 The pressure block 13 is a roller, and the pressure block 13 has two symmetrical sets. Both sets of pressure blocks 13 are rotatably mounted on the support block 15. The port of the storage groove 20 is provided with a chamfer 5.

[0027] During the process of moving the pressure block 13 into the storage groove 20, the pressure block 13 pushes the support block 15 and the plate 16 under the action of the chamfer 5, the spring 17 is compressed, and the support block 15 slides in the sliding hole 14, so as to facilitate the storage of the pressure block 13 into the storage groove 20; when the pressure block 13 extends out of the storage groove 20, the elastic force of the spring 17 is released, causing the support block 15 to slide back to its original position, and the pressure block 13 presses against the syringe again, thus facilitating the fixation of the syringe.

[0028] Reference Figure 3 andFigure 8 An arc-shaped rod 18 is fixedly connected to the end of the crossbar 10. A guide groove 19 is provided in the storage groove 20, and the end of the arc-shaped rod 18 is slidably sleeved in the guide groove 19.

[0029] During the use of the pressure block 13, the end of the arc-shaped rod 18 is always placed in the guide groove 19, which can provide auxiliary support to enhance stability and also play a guiding role; while during the storage or reset of the pressure block 13, the arc-shaped rod 18 slides along the guide groove 19 to provide precise guidance for the movement of the pressure block 13.

[0030] Reference Figures 3-6 Two symmetrically arranged clamping rods 22 are rotatably mounted on the push block 4 via a rotating rod 21. The two clamping rods 22 are used to clamp the syringe plunger. The end of the rotating rod 21 extends into the end cap 11 and is fixedly mounted with a gear 23. The two gears 23 are meshed with each other. A second torsion spring 27 is installed between one of the gears 23 and the push block 4. An L-shaped rod 24 is fixedly connected to one of the gears 23. A column 25 for pushing the L-shaped rod 24 is fixedly connected to the inner wall of the end cap 11.

[0031] During the process of storing the pressure block 13 into the receiving slot 20, the rotating end cap 11 will drive the column 25 to rotate synchronously, causing it to disengage from the end of the L-shaped rod 24. The L-shaped rod 24 will then be released from its limit and elastically reset under the drive of the second torsion spring 27, causing the gear 23 to reverse. The two meshing gears 23 will drive the two clamping rods 22 to deflect away through the rotating rod 21. At this time, the position of the push block 4 will be adjusted so that the syringe plunger is pressed against the push block 4. Then the pressure block 13 will be reset, and the end cap 11 will reverse, causing the column 25 to push the end of the L-shaped rod 24 again. The L-shaped rod 24 will overcome the elastic force of the second torsion spring 27 to cause the gear 23 to reverse. The two clamping rods 22 will then move closer to each other again and clamp the syringe plunger, thus quickly achieving the fixation of the syringe plunger.

[0032] In summary, the clamping and unloading of the syringe and its plunger can be completed simultaneously during the adjustment of the pressure block 13, thereby significantly improving operational efficiency.

[0033] Reference Figure 4 A rotating tube 26 is rotatably mounted on the column 25. The outer wall of the rotating tube 26 is attached to the outer wall of the L-shaped rod 24. When the column 25 pushes the L-shaped rod 24, the rotating tube 26 on the outer wall of the column 25 can reduce the frictional resistance between the two, making the pushing process more effortless.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for dispensing anesthetic drugs for laparoscopic surgery in elderly patients, comprising a micro-injection pump body (1) with a storage slot (2), wherein a pull rod (3) is slidably mounted on the micro-injection pump body (1), and a push block (4) is connected to the end of the pull rod (3), characterized in that: The side wall of the micro-injection pump body (1) is fixedly connected to a side plate (6), and a crossbar (10) is connected to the side plate (6). The crossbar (10) is parallel to the pull rod (3). The crossbar (10) and the pull rod (3) are located on both sides of the movement path of the push block (4). When the pull rod (3) pulls the push block (4) to translate, the push block (4) slides on the crossbar (10). The end of the crossbar (10) is connected to a pressure block (13) that presses against the storage slot (2). The micro-injection pump body (1) is provided with a receiving slot (20). The crossbar (10) is connected to the push block (4) through a connecting part. The connecting part is used to drive the pressure block (13) to move into the receiving slot (20) or to move in the opposite direction to reset.

2. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 1, characterized in that: The connecting part includes an end cap (11) rotatably sleeved on the end of the push block (4). The side wall of the end cap (11) is provided with a transverse groove (12). The crossbar (10) slides laterally in the transverse groove (12). The side wall of the side plate (6) is rotatably connected to a short shaft (7). A disc (8) is fixedly installed on the short shaft (7). The end of the crossbar (10) is fixedly connected to the shaft end of the disc (8). A first torsion spring (9) is installed between the short shaft (7) and the side plate (6).

3. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 1, characterized in that: The end of the crossbar (10) is provided with a sliding hole (14), and a support block (15) is slidably installed in the sliding hole (14). A plate (16) is fixedly connected to the support block (15), and a spring (17) is installed between the plate (16) and the crossbar (10). The pressure block (13) is installed on the support block (15).

4. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 3, characterized in that: The pressure block (13) is a roller. The pressure block (13) has two symmetrical sets. Both sets of pressure blocks (13) are rotatably mounted on the support block (15). The port of the storage groove (20) is provided with a chamfer (5).

5. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 1, characterized in that: The end of the crossbar (10) is fixedly connected to an arc-shaped rod (18), and a guide groove (19) is provided in the storage groove (20). The end of the arc-shaped rod (18) is slidably sleeved in the guide groove (19).

6. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 1, characterized in that: Two symmetrically arranged clamping rods (22) are rotatably mounted on the push block (4) via a rotating rod (21). The end of the rotating rod (21) extends into the end cover (11) and is fixedly mounted with a gear (23). The two gears (23) mesh with each other, and a second torsion spring (27) is installed between one of the gears (23) and the push block (4).

7. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 6, characterized in that: One of the gears (23) is fixedly connected to an L-shaped rod (24), and the inner wall of the end cap (11) is fixedly connected to a column (25) that pushes the L-shaped rod (24).

8. The anesthetic drug dispensing device for laparoscopic surgery in elderly patients according to claim 7, characterized in that: A rotating tube (26) is rotatably mounted on the column (25), and the outer wall of the rotating tube (26) is attached to the outer wall of the L-shaped rod (24).

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