Drug liquid compensation mechanism for the drug liquid channel inside the trocar

Abstract

The present invention discloses a liquid medicine compensation mechanism for the liquid medicine channel in a puncture device, belonging to the technical field related to liquid medicine compensation of an infusion robot. It includes an infusion bag, an infusion bag puncture window, a puncture device, and a puncture manipulator. At the tail end of the puncture device, there is an air column detector in the infusion tube at the tail end of the puncture device. At the drip chamber part of the puncture device, there is a liquid level detector in the drip chamber. At a certain distance below the drip chamber part of the puncture device, there is an infusion tube locking mechanism. Among them, the liquid medicine compensation mechanism for the liquid medicine channel in the puncture device is divided into three compensation methods: linear extrusion compensation and crankshaft extrusion method, puncture motor rotation force extrusion method, and puncture motor bidirectional transmission liquid level compensation method. The present invention is used to solve the technical problems in the prior art that when it comes to the infusion bottle switching mechanism part, the liquid level recognition mechanism in the infusion container cannot recognize the liquid level changes in some infusion containers or for some special infusion requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field related to liquid medicine compensation of an infusion robot, and specifically relates to a liquid medicine compensation mechanism for the liquid medicine channel in a puncture device. Background Art

[0002] In the medical field, infusion therapy is a conventional and widely used treatment method, which involves injecting drugs or nutrient solutions into a patient's body through intravenous infusion. With the development of medical technology, as an automated device, an infusion robot has been widely used in clinical practice to improve the efficiency and safety of the infusion process. Through automated operations, the infusion robot can reduce the workload of medical staff, reduce human operation errors, and improve the accuracy and reliability of infusion.

[0003] However, existing infusion robots face some challenges in practical applications. When it comes to the infusion bottle switching mechanism part, when the liquid level recognition mechanism in the infusion container fails to recognize the liquid level change in some infusion containers or for some special infusion requirements, in order to better ensure the effective switching effect of the infusion bottle and ensure that the puncture part of the infusion set is filled with infusion liquid medicine and the liquid level in the drip chamber is maintained at a safe and effective position, it is an important guarantee to prevent safety hazards such as over - infusion and ensure the normal operation of the infusion robot and the safety of clinical infusion. Therefore, it is necessary to develop a liquid medicine compensation mechanism for the liquid medicine channel in a puncture device. Summary of the Invention

[0004] In view of the above problems, the present invention provides a liquid medicine compensation mechanism for the liquid medicine channel in a puncture device, which is used to solve the technical problems in the prior art when the liquid level recognition mechanism in the infusion container fails to recognize the liquid level change in some infusion containers or for some special infusion requirements in the infusion bottle switching mechanism part.

[0005] To achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows:

[0006] The liquid medicine compensation mechanism for the liquid medicine channel in a puncture device includes an infusion bag, an infusion bag puncture window, a puncture device, and a puncture manipulator. At the tail end of the puncture device, there is an air column detector in the infusion tube at the tail end of the puncture device. At the drip chamber part of the puncture device, there are a liquid level detector in the drip chamber and a liquid medicine compensation mechanism for the puncture device pipeline. At a certain distance below the drip chamber part of the puncture device, there is an infusion tube locking mechanism. Among them, the liquid medicine compensation mechanism for the liquid medicine channel in the puncture device is divided into three compensation methods: linear extrusion compensation and crankshaft extrusion method, puncture motor rotation force extrusion method, and puncture motor bidirectional transmission liquid level compensation method.

[0007] As a further improvement of the above - mentioned solution, the linear extrusion compensation and the crankshaft extrusion method are respectively arranged on both sides of the drip chamber part; for the linear extrusion compensation, the output end of a linear motor is connected to a transmission lead screw. The transmission lead screw passes through a vertical plate and is then connected to a telescopic transmission block. The extrusion part of the telescopic transmission block is provided with an oblique cutting part.

[0008] As a further improvement of the above solution, the crankshaft extrusion method is that the output end of the crankshaft motor is connected to the crankshaft.

[0009] As a further improvement of the above solution, when the puncture device pipeline liquid medicine compensation mechanism is the linear extrusion compensation and the crankshaft extrusion method, the transmission mechanism of the puncture manipulator is that the output end of the transmission motor is connected to the third lead screw through a transmission component, and the third lead screw is connected to the puncture manipulator through a lifting block.

[0010] As a further improvement of the above solution, the puncture motor rotary force extrusion method is the extrusion of the extrusion transmission block, and the extrusion transmission block and the first extrusion block form an inclined wedge mechanism; the first extrusion block is arranged at the side end of the drip chamber; a transmission rod is arranged at the upper end of the extrusion transmission block, and the middle and upper parts of the transmission rod are respectively inserted into the connecting block and the lifting block; the second lead screw is connected to the output end of the first motor through the connecting block; the puncture manipulator is arranged at the side end of the lifting block through a support block.

[0011] As a further improvement of the above solution, a spring is arranged in the first extrusion block.

[0012] As a further improvement of the above solution, the puncture motor bidirectional transmission liquid level compensation method is the extrusion of the second extrusion block, and the second extrusion block and the lead screw transmission block form an inclined wedge mechanism; the lead screw transmission block is arranged at the side end of the drip chamber; the lead screw transmission block is inserted into the first lead screw, the middle part of the first lead screw is inserted into the connecting block, and a first lead screw is also arranged at the upper end of the connecting block, and the upper first lead screw is arranged in the lifting block; the upper and lower first lead screws are connected to the output end of the first motor through the connecting block; the puncture manipulator is arranged at the side end of the lifting block through a support block.

[0013] As a further improvement of the above solution, a spring is arranged in the second extrusion block.

[0014] As a further improvement of the above solution, for the infusion tube locking mechanism, the infusion tube locking mechanism includes a locking mechanism motor, the output end of the locking mechanism motor is connected to a locking mechanism lead screw, and the locking mechanism lead screw is connected to a locking block; an inclined cutting part is arranged at the top of the locking block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention provides a liquid medicine compensation mechanism for the liquid medicine channel in the puncture device, which can ensure that the puncture device is always filled with liquid medicine during the infusion process, avoid air entry, reduce safety hazards such as over - flow during infusion, and improve the safety and reliability of infusion.

[0017] An air column detector is arranged at the tail end of the puncture device, which can real - time monitor the air column situation in the infusion tube at the tail end of the puncture device, timely detect and compensate for the liquid medicine, prevent air bubbles from entering the patient's body, and ensure the safety of infusion.

[0018] The liquid level in the drip chamber is monitored by a liquid level detector, and the liquid medicine compensation mechanism in the liquid medicine channel of the puncture device automatically compensates the liquid medicine according to the detection result, ensuring that the liquid level in the drip chamber is maintained at a safe and effective position, and improving the stability of the infusion process.

[0019] The infusion tube locking mechanism ensures the stability of the infusion tube during the compensation process, prevents liquid medicine leakage, and improves the safety of the infusion process. Brief Description of the Drawings

[0020] Figure 1 This is a schematic diagram of the linear extrusion compensation method and the crankshaft extrusion method of the liquid medicine compensation mechanism in the puncture device pipeline of the present invention.

[0021] Figure 2 This is a schematic diagram of the extrusion method of the rotational force of the puncture motor for the liquid medicine compensation mechanism in the puncture device pipeline of the present invention.

[0022] Figure 3 This is a schematic diagram of the liquid level compensation by the bidirectional drive of the puncture motor for the liquid medicine compensation mechanism in the puncture device pipeline of the present invention.

[0023] In the figure: 1. Infusion bag; 2. Infusion bag puncture window; 3. Puncture device; 4. Puncture manipulator; 5. Air column detector in the infusion tube at the end of the puncture device; 6. Crankshaft motor; 7. Crankshaft; 8. Liquid level detector in the drip chamber; 9. Infusion tube locking mechanism; 901. Locking mechanism motor; 902. Locking mechanism lead screw; 903. Locking block; 10. Telescopic drive block; 11. Drive lead screw; 12. Linear motor; 13. Drive motor; 14. Third lead screw; 15. First extrusion block; 16. Extrusion drive block; 17. Drive rod; 18. First motor; 19. Lifting block; 20. Spring; 21. Second extrusion block; 22. Lead screw drive block; 23. First lead screw; 24. Second lead screw; 25. Connecting block; 26. Moving block. Detailed Embodiment

[0024] In order to enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below in conjunction with embodiments. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0025] As Figures 1-3As shown, the specific scheme of this embodiment is: a liquid compensation mechanism for a liquid channel in the puncture device, comprising an infusion bag 1, an infusion bag puncture window 2, a puncture device 3 and a puncture manipulator 4, a gas column detector 5 in the infusion tube at the tail end of the puncture device 3 is arranged, a liquid level detector 8 in the drip pot is arranged at the drip pot part of the puncture device 3, and an infusion tube locking mechanism 9 is arranged at the lower end interval of the drip pot part of the puncture device 3, wherein the liquid compensation mechanism for the liquid channel in the puncture device is divided into three compensation modes: linear extrusion compensation and crankshaft extrusion mode, puncture motor rotation force extrusion mode, and puncture motor bidirectional transmission liquid level compensation mode.

[0026] like Figure 1 As shown, as a preferred mode of the above embodiment, the linear extrusion compensation and the crankshaft extrusion mode are respectively arranged on both sides of the drip pot part; the linear extrusion compensation is that the output end of the linear motor 12 is connected to the transmission screw 11, and the transmission screw 11 is inserted into the vertical plate and connected to the telescopic transmission block 10, and the extrusion part of the telescopic transmission block 10 is provided with a beveled part.

[0027] The crankshaft extrusion method is that the output end of the crankshaft motor 6 is connected to the crankshaft 7.

[0028] When the liquid compensation mechanism of the liquid channel in the puncture device is a linear extrusion compensation and crankshaft extrusion mode, the puncture robot transmission mechanism is that the output end of the transmission motor 13 is connected to the third screw rod 14 through the transmission assembly, and the third screw rod 14 is connected to the puncture robot 4 through the moving block 26.

[0029] The working principle and working process of the above technical solution are:

[0030] When the liquid level recognition mechanism in the infusion container of the infusion bottle switching mechanism of the infusion robot cannot recognize the liquid level change in some infusion containers or there are some special infusion requirements, the liquid level in the infusion container is close to the end of the infusion, and the infusion robot continues to infuse until the infusion liquid in the bottle is infused, and air enters the tube inside the puncture device 3, and the air column detector 5 placed in the infusion tube at the tail end of the puncture device detects the flow of the air column, which gives information to the central processing center, and the central processing center gives a signal, and the infusion tube locking mechanism 9 locks the catheter to intercept the flow. The puncture device 3 is driven by the puncture manipulator 4 to detach (pull out) from the puncture window of the infusion bottle to disconnect the infusion channel, and the infusion bottle switching mechanism sends the next bottle of infusion to the infusion work position at the upper end of the puncture manipulator 4, and the puncture manipulator 4 drives the puncture device 3 to enter the puncture window of the infusion bottle to open the infusion channel.

[0031] The linear motor 12 of the linear motor driven liquid medicine compensation mechanism drives the transmission screw 11 to push the linear telescopic transmission block 10 to squeeze the drip pot, and push the air column on the upper part of the air column detector 5 in the infusion tube at the tail end of the puncture back into the infusion bottle. The motor of the liquid level compensation mechanism drives the transmission screw 11 to retract the linear telescopic transmission block 10 to release the squeezing of the drip pot, and the infusion tube locking mechanism 9 releases the lock on the infusion tube. The liquid in the infusion bottle is driven by gravity or the pump force of the infusion pump to partially fill the puncture 3 with liquid medicine. The infusion enters the next process.

[0032] The crankshaft motor 6 of the crankshaft motor 6 driving the liquid medicine compensation mechanism drives the crankshaft 7, and the crankshaft 7 rotates to squeeze the drip pot, so that the air in the puncture device 3 is squeezed back to the infusion bottle. The crankshaft 7 partially rotates to release the squeezing of the drip pot and replenishes the liquid in the infusion bottle back to the tube in the puncture device 3.

[0033] like Figure 2 As shown, as a preferred mode of the above embodiment, the puncture motor rotational force extrusion mode is the extrusion transmission block 16 extrusion, the extrusion transmission block 16 and the first extrusion block 15 are an inclined wedge mechanism; the first extrusion block 15 is arranged at the side end of the drip pot; the upper end of the extrusion transmission block 16 is provided with a transmission rod 17, and the middle and upper ends of the transmission rod 17 are respectively inserted in the connecting block 25 and the lifting block 19; the second screw rod 24 is connected to the output end of the first motor 18 through the connecting block 25; the puncture robot 4 is arranged at the side end of the lifting block 19 through the support block.

[0034] As a preferred embodiment of the above embodiment, a spring 20 is provided in the first extrusion block 15 .

[0035] Puncturer manipulator linkage mechanism extrusion method:

[0036] The movement of the puncture manipulator 4 can be divided into driving the puncture device 3 upward from the initial position to enter the puncture window of the infusion container to open the infusion channel; driving the puncture device 3 downward to separate from the puncture window of the infusion container to cut off the infusion channel. Different compensation mechanisms for the liquid medicine channel in the puncture device are set at the transmission part of the puncture manipulator 4 to complete the squeezing or release of the drip pot of the infusion device to replenish part of the liquid medicine in the puncture device 3.

[0037] The downward and upward movement of the puncture robot (such as Figure 2 shown):

[0038] When the liquid level recognition mechanism in the infusion container switching mechanism part of the infusion robot fails to recognize the liquid level change in some infusion containers or there are some special infusion requirements, the infusion robot continues to infuse. When all the liquid medicine in the infusion container is infused and air enters the puncture device 3, the air column detector 5 placed in the infusion tube at the end of the puncture device detects the air column flowing through, and the air column detector 5 gives information to the central processing center. The central processing center gives a signal, and the infusion tube locking mechanism 9 locks the catheter to cut off the flow.

[0039] The puncture device 3 is driven by the puncture manipulator 4 to disengage (pull out) from the puncture window of the infusion bag, and the infusion channel is disconnected. During the return process of the puncture manipulator 4, the liquid medicine compensation mechanism in the liquid medicine channel of the puncture device on it moves downward. When the liquid medicine compensation mechanism in the liquid medicine channel of the puncture device passes through the extrusion transmission block 16, the extrusion transmission block 16 pushes the first extrusion block 15 to extrude the drip chamber; after the infusion container switching mechanism moves the next infusion container to the infusion working position, the puncture manipulator moves upward. During the process of driving the puncture device to insert into the puncture window 2 of the infusion bag in the infusion working position, it also drives the liquid medicine compensation mechanism in the liquid medicine channel of the puncture device on it to disengage from the extrusion transmission block 16. The first extrusion block 15 returns under the action of the spring 20 and returns to the initial position where it does not extrude the drip chamber. The drip chamber returns to the unextruded state under its own elastic (plastic) action; the puncture manipulator continues to move upward until the puncture device is completely inserted into the puncture window of the infusion bag to conduct the infusion channel; at this time, the liquid in the infusion bag enters the infusion pipeline at the puncture device end under the action of gravity and the plastic restoring force of the drip chamber, making the infusion pipeline full of liquid. The infusion tube locking mechanism 9 is loosened, and the infusion robot enters the normal infusion process.

[0040] The above extrusion transmission block 16 and the first extrusion block 15 form an inclined wedge mechanism. The vertical movement of the extrusion transmission block 16 is converted into the horizontal movement of the first extrusion block 15, thereby extruding or releasing the drip chamber. The vertical movement of the extrusion transmission block 16 is driven by the rotation of the first motor 18 to drive the second lead screw 24 to rotate, driving the transmission rod 17 arranged in the lifting block 19 to move up and down, and the extrusion transmission block 16 is of an integral structure with the transmission rod 17, thus realizing the vertical movement of the extrusion transmission block 16.

[0041] Here, the puncture device 3 is driven by the puncture manipulator 4 to disengage (pull out) from the puncture window of the infusion bag to disconnect the infusion channel, or the puncture manipulator 4 drives the puncture device 3 to move upward. Both are driven by the rotation of the first motor 18 to drive the second lead screw 24 to rotate, thereby driving the lifting block 19 inserted in the second lead screw 24 to move up and down, and then driving the support block connected to the puncture manipulator 4 to move up and down.

[0042] Such as Figure 3As shown, as a preferred embodiment of the above, the puncture motor bidirectional transmission liquid level compensation method is that the second extrusion block 21 is extruded. The second extrusion block 21 and the lead screw transmission block 22 form an inclined wedge mechanism; the lead screw transmission block 22 is arranged at the side end of the drip kettle; the lead screw transmission block 22 is inserted into the first lead screw 23. The middle part of the first lead screw 23 is inserted into the connection block 25. The upper end of the connection block 25 is also provided with the first lead screw 23, and the upper first lead screw 23 is arranged in the lifting block 19; the upper and lower first lead screws 23 are connected to the output end of the first motor 18 through the connection block 25; the puncture manipulator 4 is arranged at the side end of the lifting block 19 through the support block.

[0043] As Figure 1 shown, as a preferred embodiment of the above, a spring 20 is arranged in the second extrusion block 21.

[0044] As Figure 3 shown, as a preferred embodiment of the above, the first lead screw 23 has a double-headed lead screw structure and can be arranged as an integral structure or a separated structure.

[0045] As Figures 1-3 shown, as a preferred embodiment of the above, the infusion tube locking mechanism 9, the infusion tube locking mechanism 9 includes a locking mechanism motor 901, the output end of the locking mechanism motor 901 is connected to a locking mechanism lead screw 902, and the locking mechanism lead screw 902 is connected to a locking block 903; a beveled portion is arranged at the top of the locking block 903.

[0046] The puncture manipulator motor additional lead screw transmission method extrudes the drip kettle to compensate the liquid medicine in the puncture device pipeline:

[0047] The first motor 18 is provided with the first lead screw 23 at both the upper and lower ends through the connection block 25. The upper first lead screw 23 is responsible for synchronously driving the puncture manipulator 4 to move up and down. It drives the first lead screw 23 to rotate through the rotation of the first motor 18, drives the lifting block 19 inserted into the first lead screw 23 to move up and down, and further drives the support block connected to the puncture manipulator 4 to move up and down.

[0048] The lower first lead screw 23 is responsible for synchronously driving the liquid medicine compensation mechanism in the liquid medicine channel in the puncture device.

[0049] The lead screw transmission block 22 and the second extrusion block 21 form an inclined wedge mechanism. The vertical movement of the lead screw transmission block 22 is converted into the horizontal movement of the second extrusion block 21, so as to squeeze or release the drip kettle. The vertical movement of the lead screw transmission block 22 is driven by the rotation of the first motor 18 to drive the lower first lead screw 23 to rotate, and the lead screw transmission block 22 is arranged on the first lead screw 23, thus realizing the vertical movement of the lead screw transmission block 22.

[0050] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Specific examples are used in this text to elaborate on the principles and implementation manners of the technical solution of the present invention. The description of the above examples is only for helping to understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be pointed out that due to the limitation of literal expression and objectively existing infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A drug liquid compensation mechanism for a drug liquid channel in a puncture device, comprising an infusion bag (1), an infusion bag puncture window (2), a puncture device (3) and a puncture manipulator (4), characterized in that: The tail end of the puncture device (3) is provided with an air column detector (5) in the infusion tube at the tail end of the puncture device, the drip pot part of the puncture device (3) is provided with a liquid level detector (8) in the drip pot, and the lower end of the drip pot part of the puncture device (3) is provided with an infusion tube locking mechanism (9), wherein the puncture device pipeline liquid medicine compensation mechanism is divided into three compensation modes: linear extrusion compensation and crankshaft extrusion mode, puncture motor rotation force extrusion mode, and puncture motor bidirectional transmission liquid level compensation mode; The linear extrusion compensation and crankshaft extrusion modes are respectively arranged on both sides of the drip pot; the linear extrusion compensation is that the output end of the linear motor (12) is connected to the transmission screw (11), the transmission screw (11) is inserted into the vertical plate and connected to the telescopic transmission block (10), and the extrusion portion of the telescopic transmission block (10) is provided with a chamfered portion; the crankshaft extrusion mode is that the output end of the crankshaft motor (6) is connected to the crankshaft (7); The rotational force extrusion method of the puncture motor is extrusion of the extrusion transmission block (16), and the extrusion transmission block (16) and the first extrusion block (15) are an inclined wedge mechanism; the first extrusion block (15) is arranged at the side end of the drip pot; a transmission rod (17) is arranged at the upper end of the extrusion transmission block (16), and the transmission rod (17) is connected to the first motor (18) through a connecting block (25), a lifting block (19) and a second screw rod (24); a spring (20) is arranged in the first extrusion block (15); The puncture motor bidirectional transmission liquid level compensation method is that the second extrusion block (21) is extruded, and the second extrusion block (21) and the screw drive block (22) are an inclined wedge mechanism; the screw drive block (22) is arranged at the side end of the drip pot; the screw drive block (22) is inserted in the first screw (23), and the first screw (23) is connected to the output end of the first motor (18) through the connecting block (25); and a spring (20) is arranged in the second extrusion block (21).

2. The drug liquid compensation mechanism in the drug liquid channel of the puncture device according to claim 1, characterized in that: When the puncture device pipeline liquid medicine compensation mechanism is a linear extrusion compensation and crankshaft extrusion mode, the puncture robot transmission mechanism is that the output end of the transmission motor (13) is connected to the third screw rod (14) through the transmission assembly, and the third screw rod (14) is connected to the puncture robot (4) through the movable block.

3. The drug liquid compensation mechanism in the drug liquid channel of the puncture device according to claim 1, characterized in that: The middle portion and the upper end of the transmission rod (17) are respectively inserted into the connection block (25) and the lifting block (19); the second screw rod (24) is connected to the output end of the first motor (18) via the connection block (25); and the puncture robot (4) is arranged at the side end of the lifting block (19) via a support block.

4. The drug liquid compensation mechanism in the drug liquid channel of the puncture device according to claim 1, characterized in that: The middle portion of the first screw rod (23) is inserted into the connecting block (25), the upper end of the connecting block (25) is also provided with the first screw rod (23), and the first screw rod (23) at the upper end is arranged in the lifting block (19); the puncture robot (4) is arranged at the side end of the lifting block (19) through the support block.

5. The drug liquid compensation mechanism in the drug liquid channel of the puncture device according to claim 1, characterized in that: The infusion tube locking mechanism (9) comprises a locking mechanism motor (901), the output end of the locking mechanism motor (901) is connected to the locking mechanism screw rod (902), the locking mechanism screw rod (902) is connected to the locking block (903); and a chamfered portion is provided on the top of the locking block (903).

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