Intra-articular perfusion device

Abstract

The present invention relates to the field of medical equipment technology, specifically an intra-articular perfusion device, comprising a perfusion shell, the outer wall of the perfusion shell is fixedly connected to a liquid extraction mechanism, the inner wall of the perfusion shell is slidably connected to a cleaning mechanism, the inner wall of the cleaning mechanism is slidably connected to the outer wall of the liquid extraction mechanism, the inner wall of the perfusion shell is clamped with a quantitative shell, and the inner wall of the quantitative shell is clamped with an injection head. In the prior art, when there is a lot of joint effusion, it is necessary to frequently remove the syringe to extract it. During the extraction process, it may cause sealing problems caused by the misalignment of the syringe and the needle. At the same time, the efficiency is not high, and when there is less joint effusion in the subsequent process, precise extraction operations are required to avoid human tissue being sucked into the joint cavity due to low pressure during extraction, thereby causing damage. When encountering effusion caused by joint damage, slow extraction is also required to prevent secondary damage to the patient. After the extraction of the intra-articular effusion is completed, the interior needs to be cleaned and disinfected to prevent recurrence of the disease.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to an intra-articular perfusion device. Background Art

[0002] Joint effusion refers to the increased secretion of synovial fluid and abnormal accumulation in the joint cavity due to factors such as infection, trauma, and inflammation. When synovial fluid accumulates too much, it often causes symptoms such as joint swelling, pain, and movement disorders. When there is too much joint effusion, joint perfusion therapy is required. The basic principle of joint cavity perfusion therapy is to use a syringe or other device to flush the joint cavity with cleaning fluid to remove inflammatory mediators, wear debris and metabolic products, while providing lubrication and nutrition, reducing friction between joint surfaces, thereby alleviating pain and improving joint function.

[0003] Considering that in the existing technology, when there is a lot of joint effusion, the syringe needs to be removed frequently for extraction, which may cause sealing problems due to misalignment between the syringe and the needle during the extraction process, and the efficiency is not high. In addition, considering that precise extraction operations are required when there is less joint effusion in the future to avoid damage to human tissue caused by low pressure in the joint cavity during extraction, and slow extraction is also required when encountering effusion caused by joint damage to prevent secondary injury to the patient. After the joint effusion is extracted, the interior needs to be cleaned and anti-inflammatory to prevent recurrence of the disease, or joint lubricant can be injected into the interior to lubricate and protect the joint. Summary of the Invention

[0004] The object of the present invention is to provide an intra-articular perfusion device to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an intra-articular perfusion device, comprising a perfusion shell, the outer wall of which is fixedly connected to a liquid extraction mechanism, the inner wall of which is slidably connected to a cleaning mechanism, the inner wall of which is slidably connected to the outer wall of the liquid extraction mechanism, the inner wall of which is clamped to a quantitative shell, the inner wall of which is clamped to an injection head, and the inner wall of which is fixedly connected to an air inlet.

[0007] The cam is connected to the top of the pumping shell and the top of the pumping shell is connected to the inner wall of the pumping shell, the top of the pumping shell is overlapped with the fixed shell, the inner wall of the fixed shell is slidably connected to the manual piston, the inner wall of the manual piston is slidably connected to the detachable piston handle, the inner wall of the pumping shell is fixedly connected to the discharge port, the outer wall of the discharge port is fixedly connected to the collecting shell, the inner wall of the collecting shell is fixedly connected to the outer wall of the perfusion shell, the inner wall of the pumping shell is fixedly connected to the one-way valve block, the inner wall of the one-way valve block is fixedly connected to the return spring, one end of the return spring is fixedly connected to the one-way valve baffle, the outer wall of the one-way valve baffle is slidably connected to the inner wall of the one-way valve block, the inner wall of the fixed shell is provided with a vent hole, the outer wall of the pumping shell is fixedly connected to the baffle, the inner wall of the pumping shell is provided with a vent groove, and there are six groups of vent grooves.

[0008] The cleaning mechanism includes a cleaning liquid piston, the outer wall of the cleaning liquid piston is slidably connected to the inner wall of the perfusion shell, the bottom of the cleaning liquid piston is fixedly connected to the limiting rod, the outer wall of the limiting rod is slidably connected to the limiting block, the outer wall of the limiting block is provided with a guide groove, and there are three groups of guide holes, the inner wall of the limiting block is slidably connected to the driven rod, the bottom of the driven rod is fixedly connected to the cleaning liquid stopper, the inner wall of the cleaning liquid piston is slidably connected to the outer wall of the liquid extraction shell, the inner wall of the cleaning liquid piston is clamped with an opening and closing shell, the inner wall of the opening and closing shell is provided with a connecting hole, and the connecting hole is provided. There are two groups of connecting holes, the outer wall of the opening and closing shell is rotatably connected to the inner wall of the liquid extraction shell, the top of the opening and closing shell is fixedly connected to an adjusting wheel, the outer wall of the adjusting wheel is rotatably connected to the adjusting shell, the top of the adjusting shell is fixedly connected to the bottom of the fixed shell, the bottom of the adjusting shell is fixedly connected to the top of the perfusion shell, the outer wall of the adjusting wheel is fixedly connected to an adjusting block, the inner wall of the adjusting block is slidably connected to the outer wall of the adjusting shell, the outer wall of the cleaning liquid block is slidably connected to the outer wall of the baffle, the outer wall of the opening and closing shell is provided with connecting grooves, and there are six groups of connecting grooves.

[0009] The above technical solution is adopted, taking into account that in the existing technology, when there is a lot of joint effusion, the syringe needs to be removed frequently to extract it, which may cause sealing problems caused by misalignment of the syringe and the needle during the extraction process, and the efficiency is not high. In addition, it is necessary to perform precise extraction operations when there is less joint effusion in the future to avoid human tissue being sucked into the joint cavity due to low pressure during extraction, thereby causing damage. At the same time, when encountering effusion caused by joint damage, it is also necessary to extract slowly to prevent secondary damage to the patient. It is connected to the external air pump through the air inlet, and the air pump is used to pump air outwards When the air pressure in the fixed shell is reduced, the pneumatic piston will move upward to maintain the consistency of the air pressure. When the pneumatic piston rises, the air pressure inside the liquid extraction shell will also decrease. At this time, the one-way valve baffle will move upward under the influence of pressure, and connect the inside of the liquid extraction shell and the cavity through the hole in the center of the one-way valve baffle. Because the internal air pressure of the liquid extraction shell is lower, the gas and liquid inside the quantitative shell and the injection head will be sucked into the liquid extraction shell, and at the same time, the effect of absorbing joint effusion can be achieved. The air pump is used to fill the fixed shell with air, and when filling the air, the fixed shell will be The air pressure inside the shell increases, and the pneumatic piston is squeezed downward by the air pressure. When the pneumatic piston moves downward, the internal air and liquid are discharged to the collection shell through the drain port due to the increase in air pressure, and discharged from the equipment through the drain port. In addition, the one-way valve baffle will block the hole in the center of the one-way valve block under the action of the return spring, which will prevent gas or liquid from re-entering the quantitative shell or the human body to prevent air embolism caused by air entering the human body, ensuring safety. At the same time, in order to ensure that the equipment is applicable when there is less fluid accumulation or to perform precise operations when there is less fluid accumulation, or to prevent Children may have a stress reaction to the noise of the air pump. The detachable piston handle can be used for manual operation. The adjustment wheel can be adjusted to a specified angle through the adjustment block to make the opening and closing shell move the connection hole away and cover the vent hole, disconnecting the air inlet from the inside of the fixed shell. At this time, the detachable piston handle can be used to press down the manual piston. When the manual piston is pressed down, the inside of the fixed shell is squeezed, and the pneumatic piston is squeezed and moved downward. When the detachable piston handle is pulled outward, the air pressure inside the fixed shell is reduced, and the pneumatic piston is sucked and moves upward.After the fluid in the joint is extracted, the interior needs to be cleaned and disinfected to prevent recurrence of the disease, or joint lubricant is injected into the interior to lubricate the joint and protect it. When the cleaning fluid needs to be injected, the adjusting wheel is adjusted to the corresponding angle through the adjusting block, thereby driving the opening and closing shell to rotate, and connecting the ventilation groove and the connecting groove. When the opening and closing shell rotates, the cleaning fluid piston will be driven to rotate. When the cleaning fluid piston rotates, the limit rod will be driven to rotate, and the limit rod will drive the limit block to rotate, and drive the driven rod to rotate. When the driven rod rotates, the cleaning fluid block will move along the outer wall of the baffle and open the connection between the cleaning liquid cavity and the cavity. The cleaning fluid will enter the cavity of the quantitative shell and wait to be injected into the patient's body. When the air pressure inside the fixed shell changes, the cleaning fluid will be simultaneously The air pressure at the top of the piston changes. When the air pressure at the top of the cleaning fluid piston increases, it pushes down. When the cleaning fluid piston is pressed down, the limit rod slides on the inner wall of the limit block, which squeezes the cleaning fluid into the cavity. Continuing to apply pressure, the cleaning fluid is infused into the patient's body through the injection head. Because the contact surface between the baffle and the cleaning fluid block is designed with a slope, the connection between the cleaning fluid chamber and the cavity is slowly disconnected as the cleaning fluid is infused inwardly into the cavity. When the cavity is fully infused, the connection between the cleaning fluid chamber and the cavity is completely disconnected. At this time, the cleaning fluid can be quantitatively administered to avoid excessive cleaning fluid infusion into the patient's body and causing secondary damage. When the amount of cleaning fluid to be infused needs to be adjusted, the quantitative housing can be pulled downward to increase the space inside the cavity, which can now accommodate more cleaning fluid.

[0010] Furthermore, the inner wall of the liquid pumping shell is fixedly connected to a limit plate, and the outer wall of the opening and closing shell is fixedly connected to a baffle.

[0011] By adopting the above technical solution, the setting of the limit plate can prevent the pneumatic piston from blocking the discharge operation of the drain port, and the setting of the baffle can prevent the cleaning liquid piston from exceeding the position of the connecting groove and prevent the cleaning liquid from entering the interior of the fixed shell.

[0012] Furthermore, a discharge outlet is fixedly connected to the inner wall of the collection shell.

[0013] By adopting the above technical solution, the device can be discharged through the discharge port when discharging gas or liquid, so that the accumulated liquid can be collected without removing the syringe, thereby improving the efficiency of extracting the accumulated liquid.

[0014] Furthermore, the inner wall of the manual piston is provided with a T-slot, and there are two groups of T-slots, and the outer wall of each group of the detachable piston handle is slidably connected to the inner wall of the T-slot.

[0015] The above technical solution is adopted, considering that the presence of the detachable piston handle may hinder the operation of medical personnel when using the air pump. When in use, the detachable piston handle is inserted into the interior of the manual piston and rotated to a certain angle to jam the detachable piston handle. At this time, extraction and infusion can be performed manually. When using the air pump, the detachable piston handle needs to be moved to the middle of the T-slot and the detachable piston handle is pulled out. At this time, it will not hinder the operation of medical personnel and the weight of the equipment is reduced.

[0016] Furthermore, an L-shaped groove is formed on the inner wall of the fixed shell, and there are two groups of L-shaped grooves, and the inner wall of each group of the L-shaped grooves is slidably connected to the outer wall of the manual piston.

[0017] The above technical solution is adopted, taking into account that when using the air pump for suction operation, the manual piston may be subjected to suction and block the vent, resulting in failure to extract and infuse normally. Before using the air pump, it is necessary to use the detachable piston handle to straighten the top of the L-shaped groove on the manual piston and rotate it to a certain angle. At this time, the manual piston will be stuck, and the position of the manual piston will not be affected when the air pump performs the suction operation.

[0018] Furthermore, the inner wall of the adjusting housing is provided with a degree of rotation groove, and there are two groups of rotation grooves, and the inner wall of each group of the rotation grooves is rotatably connected to the inner wall of the adjusting wheel.

[0019] By adopting the above technical solution, the adjustment wheel can be limited within a range of degrees through the setting of the rotation groove to prevent the adjustment wheel from leaving the original position, resulting in failure to adjust the gear normally.

[0020] Furthermore, the adjustment wheel can be adjusted to multiple gears, namely 0 degree, 30 degrees, 60 degrees and 90 degrees.

[0021] By adopting the above technical solution, when the adjusting wheel is rotated by 0 degrees, the connection between the air inlet and the fixed shell will be opened, and the connection between the vent groove and the connecting groove will be opened. At this time, the air pump can be used to adjust the internal air pressure, and the infusion of the cleaning liquid can be controlled. When the adjusting wheel is rotated by 30 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet and the fixed shell will be disconnected. At this time, the infusion of the cleaning liquid cannot be controlled by air pressure, and the extraction of accumulated liquid can be performed manually. When the adjusting wheel is rotated by 60 degrees, the vent groove and the connecting groove will be connected, and the connection between the air inlet and the fixed shell will be disconnected. At this time, the cleaning liquid can be injected manually. When the adjusting wheel is rotated by 90 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet and the fixed shell will be opened. At this time, the extraction of accumulated liquid can be performed by the air pump.

[0022] Furthermore, a cavity is provided inside the quantitative housing, and a cleaning liquid cavity is provided in the area surrounded by the infusion housing, the liquid extraction housing and the cleaning liquid piston.

[0023] By adopting the above technical solution, the cleaning liquid cavity is pre-filled with cleaning liquid. When the cleaning liquid block moves, the cleaning liquid cavity is connected with the cavity, allowing the cleaning liquid to enter the cavity and be injected into the patient's body through the injection head after being pressurized.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention enables the device to have two working modes through the arrangement of the extraction mechanism, the air inlet and the opening and closing shell. When there is a lot of joint effusion, a combination of air pump and manual operation is adopted, which is also a combination of fast and slow operation. When there is little joint effusion or the effusion is caused by joint damage, manual operation will be adopted; the switching of the air pump can be controlled by rotating the opening and closing shell. When manual operation is required, a detachable piston handle can be installed and the manual piston can be operated. When there is a lot of fluid accumulation in the early stage, the air pump is used to absorb the fluid accumulation first. The air pump can be used to quickly absorb the fluid to increase efficiency. However, when there is not much remaining fluid in the later stage, manual operation is used to slow down the absorption speed and achieve precise absorption operation.

[0026] 2. The present invention can achieve the effect of perfusing cleaning fluid through the setting of the cleaning mechanism. After the fluid accumulated in the joint is extracted, the interior needs to be cleaned and anti-inflammatory to prevent recurrence of the disease, or the interior needs to be perfused with joint lubricating fluid (such as sodium hyaluronate, which can imitate the synovial fluid naturally produced by the joint) to lubricate the joint and protect it. When the cleaning fluid needs to be perfused, the ventilation groove and the connecting groove are connected by opening and closing the outer shell, so that the air pressure generated by the air pump or manually pushed gas presses down the cleaning fluid piston, thereby perfusing the cleaning fluid into the human body. When the perfusion amount of the cleaning fluid needs to be adjusted, the quantitative outer shell can be pulled downward to increase the space inside the cavity, which can accommodate more cleaning fluid.

[0027] 3. The adjustment wheel of the present invention is divided into 4 gears, namely 0 degrees, 30 degrees, 60 degrees and 90 degrees. When adjusted to 0 degrees, the cleaning fluid can be injected using an air pump. When adjusted to 30 degrees, the joint effusion can be manually extracted. When adjusted to 60 degrees, the cleaning fluid can be injected manually. When adjusted to 90 degrees, the joint effusion can be extracted using an air pump. When using the air pump for injection and extraction, efficiency is pursued and the extraction or injection work is completed quickly. When manual injection and extraction are used when the subsequent effusion is less, stability is pursued. The speed is slowed down and the operation is performed accurately to avoid secondary damage caused by excessive speed.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic front cross-sectional view of the present invention as a whole;

[0032] Figure 3 It is a schematic side cross-sectional view of the present invention as a whole;

[0033] Figure 4 It is a structural schematic diagram of the liquid pumping mechanism of the present invention;

[0034] Figure 5 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0035] Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention in the open and closed states;

[0036] Figure 7 For the present invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0037] Figure 8 This is a cross-sectional schematic diagram of the adjusting housing, adjusting wheel and adjusting block of the present invention;

[0038] Figure 9 This is a cross-sectional schematic diagram of the detachable piston handle and the manual piston of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] In the figure: 1. Infusion shell; 11. Dosing shell; 12. Injection head; 13. Air inlet; 14. Discharge port; 2. Pumping mechanism; 21. Pumping shell; 22. Fixed shell; 23. Removable piston handle; 24. Manual piston; 25. Pneumatic piston; 26. Discharge port; 27. Collection shell; 28. One-way valve block; 29. ​​One-way valve baffle; 3. Cleaning mechanism; 31. Cleaning liquid piston; 32. Limit rod; 33. Limit block; 34. Follower rod; 35. Cleaning liquid block; 36. Opening and closing shell; 37. Adjusting shell; 38. Adjusting wheel; 39. Adjusting block. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1-9 As shown, the present invention is an intra-articular perfusion device, including a perfusion shell 1, the outer wall of the perfusion shell 1 is fixedly connected to a liquid extraction mechanism 2, the inner wall of the perfusion shell 1 is slidably connected to a cleaning mechanism 3, the inner wall of the cleaning mechanism 3 is slidably connected to the outer wall of the liquid extraction mechanism 2, the inner wall of the perfusion shell 1 is clamped with a quantitative shell 11, the inner wall of the quantitative shell 11 is clamped with an injection head 12, and the inner wall of the perfusion shell 1 is fixedly connected to an air inlet 13.

[0043] The liquid pumping mechanism 2 includes a liquid pumping shell 21, the inner wall of the liquid pumping shell 21 is slidably connected with a pneumatic piston 25, the top of the pneumatic piston 25 is overlapped with a fixed shell 22, the inner wall of the fixed shell 22 is slidably connected with a manual piston 24, and the inner wall of the manual piston 24 is slidably connected with a detachable piston handle 23. The inner wall of the liquid pumping shell 21 is fixedly connected with a discharge port 26, and the outer wall of the discharge port 26 is fixedly connected with a collecting shell 27. The inner wall of the collecting shell 27 is fixedly connected to the outer wall of the perfusion shell 1, the inner wall of the liquid pumping shell 21 is fixedly connected with a one-way valve block 28, the inner wall of the one-way valve block 28 is fixedly connected with a return spring, one end of the return spring is fixedly connected with a one-way valve baffle 29, the outer wall of the one-way valve baffle 29 is slidably connected to the inner wall of the one-way valve block 28, the inner wall of the fixed shell 22 is provided with a vent hole, the outer wall of the liquid pumping shell 21 is fixedly connected with a baffle, the inner wall of the liquid pumping shell 21 is provided with a ventilation groove, and there are six groups of ventilation grooves.

[0044] The cleaning mechanism 3 includes a cleaning liquid piston 31, the outer wall of the cleaning liquid piston 31 is slidably connected to the inner wall of the perfusion shell 1, the bottom of the cleaning liquid piston 31 is fixedly connected to the limit rod 32, the outer wall of the limit rod 32 is slidably connected to the limit block 33, the outer wall of the limit block 33 is provided with a guide groove, and there are three groups of guide holes, the inner wall of the limit block 33 is slidably connected to the driven rod 34, the bottom of the driven rod 34 is fixedly connected to the cleaning liquid stopper 35, the inner wall of the cleaning liquid piston 31 is slidably connected to the outer wall of the liquid extraction shell 21, the inner wall of the cleaning liquid piston 31 is clamped with an opening and closing shell 36, the inner wall of the opening and closing shell 36 is provided with a connecting hole, and the connecting hole is provided. There are two groups of connecting holes. The outer wall of the opening and closing shell 36 is rotatably connected to the inner wall of the liquid extraction shell 21. The top of the opening and closing shell 36 is fixedly connected to the adjusting wheel 38. The outer wall of the adjusting wheel 38 is rotatably connected to the adjusting shell 37. The top of the adjusting shell 37 is fixedly connected to the bottom of the fixed shell 22. The bottom of the adjusting shell 37 is fixedly connected to the top of the perfusion shell 1. The outer wall of the adjusting wheel 38 is fixedly connected to the adjusting block 39. The inner wall of the adjusting block 39 is slidably connected to the outer wall of the adjusting shell 37. The outer wall of the cleaning liquid stopper 35 is slidably connected to the outer wall of the baffle. The outer wall of the opening and closing shell 36 is provided with connecting grooves, and there are six groups of connecting grooves.

[0045] In this embodiment, it is taken into account that in the prior art, when there is a lot of joint effusion, the syringe needs to be removed frequently for extraction, which may cause sealing problems caused by misalignment between the syringe and the needle during the extraction process, and the efficiency is not high. In addition, it is taken into account that when there is less joint effusion in the future, precise extraction operations are required to avoid the human tissue being sucked into the joint cavity due to low pressure during extraction, thereby causing damage. At the same time, when encountering effusion caused by joint damage, slow extraction is also required to prevent secondary damage to the patient. Therefore, this device has two working modes. When there is a lot of joint effusion, a combination of air pump and manual operation is used, which is also a fast and slow combination. When there is less joint effusion or the effusion is caused by joint damage, manual operation will be used.

[0046] When there is a lot of fluid in the early stage, use an air pump to absorb the fluid first. The air pump can quickly absorb the fluid to increase efficiency. However, when there is not much fluid left in the later stage, use manual operation to slow down the absorption speed and achieve precise absorption. When there is less fluid in the joint or to avoid joint effusion caused by injury, manual operation can be used directly. When aspirating joint effusion for children, because children's joint effusion is generally less and there is less space in the joint, manual operation is required to accurately absorb the fluid to prevent the air pump's suction force from being too strong, which may cause damage to human tissues. It can also prevent children from having a stress response to the noise of the air pump. There is no need to remove the syringe when aspirating joint effusion. When 25 compresses the air downward, the joint effusion in the syringe will be discharged; it is connected to the external air pump through the air inlet 13. At this time, when the air pump is used to pump air outward, the air pressure inside the fixed shell 22 can be reduced. At this time, in order to maintain the consistency of the air pressure, the pneumatic piston 25 will move upward. When the pneumatic piston 25 rises, the air pressure inside the liquid extraction shell 21 will also decrease. At this time, the one-way valve baffle 29 will move upward under the influence of pressure, and connect the inside of the liquid extraction shell 21 with the cavity through the hole in the center of the one-way valve baffle 28. Because the internal air pressure of the liquid extraction shell 21 is lower, the gas and liquid inside the quantitative shell 11 and the injection head 12 will be sucked into the liquid extraction shell 21, and at the same time, the joint effusion can be sucked out. In order to achieve the effect of effusion, air is filled into the fixed shell 22 through an air pump. When the air is filled, the air pressure inside the fixed shell 22 increases, and the pneumatic piston 25 is squeezed downward by the air pressure. When the pneumatic piston 25 moves downward, the internal air and liquid are discharged to the collection shell 27 through the drain port 26 due to the increase in air pressure, and discharged from the device through the discharge port 14. Moreover, the one-way valve baffle 29 blocks the hole in the center of the one-way valve block 28 under the action of the return spring, and at this time, the gas or liquid is prevented from re-entering the quantitative shell 11 or the human body to prevent air embolism caused by air entering the human body, thereby ensuring safety. At the same time, in order to ensure that the device is also suitable for use when there is less effusion or when there is less effusion, To perform precise operations, or to prevent children from having a stress reaction to the noise of the air pump, manual operation can be performed through the detachable piston handle 23. The adjusting wheel 38 can be adjusted to a specified angle through the adjusting block 39, so that the opening and closing shell 36 moves the connecting hole away and blocks the vent hole, thereby disconnecting the air inlet 13 from the interior of the fixed shell 22. At this time, pressing the detachable piston handle 23 downward can drive the manual piston 24 to press down. When the manual piston 24 is pressed down, the interior of the fixed shell 22 is squeezed, and at the same time, the pneumatic piston 25 is squeezed and moved downward. When the detachable piston handle 23 is pulled outward, the air pressure inside the fixed shell 22 is reduced, and at the same time, the pneumatic piston 25 is sucked and moves upward.

[0047] Considering that in the existing technology, when cleaning the joint, the extraction of effusion is carried out simultaneously, the efficiency of extraction and perfusion needs to be considered during the synchronization. If the equipment fails and the efficiency of perfusion is higher than the efficiency of extraction, it will cause the fluid inside the joint to increase, and at the same time increase the internal pressure, which may cause secondary damage to the joint, and may cause the cleaning fluid to merge with the joint effusion, resulting in the cleaning effect not being as good as the cleaning effect after the joint effusion is extracted; after the joint effusion is extracted, the inside needs to be cleaned and disinfected to prevent recurrence of the disease, or The joint lubricating fluid (such as sodium hyaluronate, which can imitate the synovial fluid naturally produced by the joint) is perfused inside to lubricate the joint and protect it; when the cleaning fluid needs to be perfused, the adjusting wheel 38 is adjusted to the corresponding angle through the adjusting block 39, thereby driving the opening and closing shell 36 to rotate, and connecting the ventilation groove and the connecting groove. When the opening and closing shell 36 rotates, it will drive the cleaning fluid piston 31 to rotate. When the cleaning fluid piston 31 rotates, it will drive the limit rod 32 to rotate. The limit rod 32 will drive the limit block 33 to rotate, and drive the driven rod 34 to rotate. When the driven rod 34 rotates, the limit rod 32 will drive the limit block 33 to rotate. When the movable rod 34 rotates, the cleaning liquid stopper 35 will move along the outer wall of the baffle plate and open the connection between the cleaning liquid chamber and the cavity. The cleaning liquid will enter the cavity of the quantitative shell 11 and wait to be infused into the patient's body. When the air pressure inside the fixed shell 22 changes, the air pressure on the top of the cleaning liquid piston 31 will change at the same time. When the air pressure on the top of the cleaning liquid piston 31 changes, it will press down. When the cleaning liquid piston 31 is pressed down, the limiting rod 32 will slide on the inner wall of the limiting block 33. At this time, the cleaning liquid will be squeezed into the cavity under pressure, and continue to apply pressure to make the cleaning liquid The cleaning liquid is injected into the patient's body through the injection head 12. Since the contact surface between the baffle and the cleaning liquid block 35 is a slope design, when the cleaning liquid is injected into the cavity, the connection between the cleaning liquid cavity and the cavity will be slowly disconnected. When the cavity is filled, the connection between the cleaning liquid cavity and the cavity will be completely disconnected. At this time, the cleaning liquid can be quantitatively operated to avoid excessive cleaning liquid being injected into the patient's body and causing secondary damage. When the injection amount of the cleaning liquid needs to be adjusted, the quantitative shell 11 can be pulled downward to increase the space inside the cavity, which can accommodate more cleaning liquid.

[0048] Specifically, the inner wall of the liquid pumping housing 21 is fixedly connected to a limit plate, and the outer wall of the opening and closing housing 36 is fixedly connected to a baffle.

[0049] In this embodiment, the setting of the limit plate can prevent the pneumatic piston 25 from blocking the discharge operation of the drain port 26, and the setting of the baffle can prevent the cleaning liquid piston 31 from exceeding the position of the connecting groove and prevent the cleaning liquid from entering the interior of the fixed shell 22.

[0050] Specifically, the inner wall of the collecting shell 27 is fixedly connected with the discharge port 14 .

[0051] In this embodiment, when discharging gas or liquid, the device can be discharged through the discharge port 14, so that the accumulated liquid can be collected without removing the syringe, thereby improving the efficiency of extracting the accumulated liquid.

[0052] Specifically, the inner wall of the manual piston 24 is provided with a T-slot, and there are two groups of T-slots. The outer wall of each group of detachable piston handles 23 is slidably connected to the inner wall of the T-slot.

[0053] In this embodiment, considering that the presence of the detachable piston handle 23 may hinder the operation of medical personnel when using the air pump, the detachable piston handle 23 is inserted into the interior of the manual piston 24 and rotated to a certain angle to be locked. At this time, extraction and infusion can be performed manually. When using the air pump, the detachable piston handle 23 needs to be moved to the middle of the T-slot and the detachable piston handle 23 is pulled out. At this time, it will not hinder the operation of medical personnel and the weight of the equipment is reduced.

[0054] Specifically, an inner wall of the fixed housing 22 is provided with two groups of L-shaped grooves, and the inner wall of each group of L-shaped grooves is slidably connected to the outer wall of the manual piston 24 .

[0055] In this embodiment, considering that the manual piston 24 may be subjected to suction and block the vent when the air pump is used for suction operation, thereby causing failure of normal extraction and infusion, before using the air pump, it is necessary to straighten the top of the L-shaped groove on the manual piston 24 through the detachable piston handle 23 and rotate it to a certain angle. At this time, the manual piston 24 will be stuck, and the position of the manual piston 24 will not be affected when the air pump is used for suction operation.

[0056] Specifically, the inner wall of the adjustment housing 37 is provided with 90-degree rotation grooves, and there are two groups of rotation grooves. The inner wall of each group of rotation grooves is rotatably connected to the inner wall of the adjustment wheel 38 .

[0057] In this embodiment, the adjustment wheel 38 can be limited within a range of 90 degrees by setting the rotation slot, so as to prevent the adjustment wheel 38 from being separated from the original position, resulting in failure to adjust the gear position normally.

[0058] Specifically, the adjustment wheel 38 can be adjusted to multiple gears, namely 0 degree, 30 degrees, 60 degrees and 90 degrees.

[0059] In this embodiment, the adjustment wheel 38 is divided into four gears, namely 0 degrees, 30 degrees, 60 degrees and 90 degrees. When it is adjusted to 0 degrees, the cleaning fluid can be injected using an air pump, and when it is adjusted to 30 degrees, the joint effusion can be manually extracted, and when it is adjusted to 60 degrees, the cleaning fluid can be injected manually, and when it is adjusted to 90 degrees, the joint effusion can be extracted using an air pump; when using the air pump for injection and extraction, efficiency is pursued and the work is completed quickly, and when manual injection and extraction are used, stability is pursued, and the speed is slowed down and precise operations are performed during operation to avoid secondary injuries caused by excessive speed; when the adjustment wheel 38 is rotated to 0 degrees, the connection between the air inlet 13 and the fixed shell 22 is opened, and the communication between the vent groove and the connecting groove is opened At this time, the air pump can be used to adjust the internal air pressure and control the infusion of the cleaning liquid. When the adjusting wheel 38 is rotated 30 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet 13 and the fixed shell 22 will be disconnected. At this time, the infusion of the cleaning liquid cannot be controlled by air pressure, and the extraction of accumulated liquid can be performed manually. When the adjusting wheel 38 is rotated 60 degrees, the vent groove and the connecting groove will be connected, and the connection between the air inlet 13 and the fixed shell 22 will be disconnected. At this time, the cleaning liquid can be injected manually. When the adjusting wheel 38 is rotated 90 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet 13 and the fixed shell 22 will be opened. At this time, the air pump can be used to extract the accumulated liquid.

[0060] Specifically, a cavity is defined inside the quantitative housing 11 , and a cleaning liquid cavity is defined in the area surrounded by the perfusion housing 1 , the liquid extraction housing 21 and the cleaning liquid piston 31 .

[0061] In this embodiment, the cleaning liquid cavity is pre-filled with cleaning liquid. When the cleaning liquid block 35 moves, the cleaning liquid cavity is connected with the cavity, allowing the cleaning liquid to enter the cavity and be injected into the patient's body through the injection head 12 after being pressurized.

[0062] When using, first of all, considering that in the prior art, when there is a lot of joint effusion, the syringe needs to be removed frequently for extraction, and the extraction process may cause sealing problems caused by the misalignment of the syringe and the needle, and the efficiency is not high. In addition, considering that there is less joint effusion in the future, precise extraction operations are required to avoid the human tissue being sucked into the joint cavity due to low pressure during extraction, thereby causing damage. At the same time, when encountering effusion caused by joint damage, slow extraction is also required to prevent secondary injury to the patient. It is connected to the external air pump through the air inlet 13. At this time, when the air pump is used to pump air outwards, the air pressure inside the fixed shell 22 can be reduced. At this time, in order to maintain the consistency of the air pressure, the pneumatic piston 25 will move upward. When the pneumatic piston 25 rises, the air pressure inside the extraction shell 21 will also decrease. At this time, the one-way valve baffle 29 will move upward under the influence of pressure and pass through the one-way valve The hole in the center of the block 28 connects the interior of the liquid extraction shell 21 and the cavity. Because the internal air pressure of the liquid extraction shell 21 is lower, the gas and liquid inside the quantitative shell 11 and the injection head 12 are sucked into the liquid extraction shell 21, and at the same time, the effect of absorbing joint effusion is achieved. The fixed shell 22 is filled with air through the air pump. When filling with air, the internal air pressure of the fixed shell 22 will increase, and the pneumatic piston 25 will be squeezed downward by the air pressure. When the pneumatic piston 25 moves downward, the internal air and liquid will be discharged to the collection shell 27 through the drain port 26 due to the increase in air pressure, and discharged from the equipment through the discharge port 14. In addition, the one-way valve baffle 29 will block the hole in the center of the one-way valve block 28 under the action of the return spring, and at this time, the gas or liquid will be prevented from re-entering the quantitative shell 11 or the human body to prevent air embolism caused by air entering the human body, thereby ensuring safety.

[0063] At the same time, in order to ensure that the equipment can be used when there is less fluid accumulation or to perform precise operations when there is less fluid accumulation, or to prevent children from having a stress reaction to the noise of the air pump, manual operation can be performed through the detachable piston handle 23, and the adjusting wheel 38 can be adjusted to a specified angle through the adjusting block 39, so that the opening and closing shell 36 removes the connecting hole and blocks the vent hole, so that the connection between the air inlet 13 and the interior of the fixed shell 22 is disconnected. At this time, pressing the detachable piston handle 23 downward can drive the manual piston 24 to be pressed down. When the manual piston 24 is pressed down, the inside of the fixed shell 22 will be squeezed, and the pneumatic piston 25 will be squeezed and moved downward. When the detachable piston handle 23 is pulled out, the air pressure inside the fixed shell 22 will be reduced, and the pneumatic piston 25 will be sucked and move upward.

[0064] In addition, when the adjusting wheel 38 is rotated 0 degrees, the connection between the air inlet 13 and the fixed shell 22 will be opened, and the connection between the vent groove and the connecting groove will be opened. At this time, the air pump can be used to adjust the internal air pressure and the infusion of the cleaning liquid can be controlled. When the adjusting wheel 38 is rotated 30 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet 13 and the fixed shell 22 will be disconnected. At this time, the infusion of the cleaning liquid cannot be controlled by air pressure, and the extraction of accumulated liquid can be performed manually. When the adjusting wheel 38 is rotated 60 degrees, the vent groove and the connecting groove will be connected, and the connection between the air inlet 13 and the fixed shell 22 will be disconnected. At this time, the cleaning liquid can be injected manually. When the adjusting wheel 38 is rotated 90 degrees, the connection between the vent groove and the connecting groove will be disconnected, and the connection between the air inlet 13 and the fixed shell 22 will be opened. At this time, the air pump can be used to extract the accumulated liquid.

[0065] Secondly, after the joint effusion is extracted, it is necessary to clean and disinfect the interior to prevent recurrence of the disease, or to inject joint lubricating fluid into the interior to lubricate the joint and protect it. When the cleaning fluid needs to be injected, the adjusting wheel 38 is adjusted to the corresponding angle through the adjusting block 39, thereby driving the opening and closing shell 36 to rotate, and connecting the ventilation groove and the connecting groove. When the opening and closing shell 36 rotates, it will drive the cleaning fluid piston 31 to rotate. When the cleaning fluid piston 31 rotates, it will drive the limiting rod 32 to rotate, and the limiting rod 32 will drive the limiting block 33 to rotate, and drive the driven rod 34 to rotate. When the driven rod 34 rotates, the cleaning fluid stopper 35 will move along the outer wall of the baffle, and open the connection between the cleaning fluid cavity and the cavity. The cleaning fluid will enter the cavity of the quantitative shell 11 and wait to be injected into the patient's body. When the air pressure inside the fixed shell 22 changes The change will simultaneously cause the air pressure at the top of the cleaning liquid piston 31 to change. When the air pressure at the top of the cleaning liquid piston 31 changes, it will be pressed down. When the cleaning liquid piston 31 is pressed down, the limit rod 32 will slide on the inner wall of the limit block 33. At this time, the cleaning liquid will be squeezed into the cavity under pressure, and continue to apply pressure to make the cleaning liquid be injected into the patient's body through the injection head 12. Since the contact surface between the baffle and the cleaning liquid block 35 is a slope design, when the cleaning liquid is injected into the cavity, the connection between the cleaning liquid cavity and the cavity will be slowly disconnected. When the cavity is filled, the connection between the cleaning liquid cavity and the cavity will be completely disconnected. At this time, the cleaning liquid can be quantitatively operated to avoid excessive cleaning liquid being injected into the patient's body and causing secondary damage. When the injection amount of the cleaning liquid needs to be adjusted, the quantitative shell 11 can be pulled downward to increase the space inside the cavity, which can accommodate more cleaning liquid.

[0066] Finally, considering that the presence of the detachable piston handle 23 may hinder the operation of medical personnel when using the air pump, the detachable piston handle 23 can be inserted into the interior of the manual piston 24 and rotated to a certain angle to jam the detachable piston handle 23. At this time, extraction and infusion can be performed manually. When using the air pump, the detachable piston handle 23 needs to be moved to the middle of the T-slot and the detachable piston handle 23 needs to be pulled out. At this time, it will not hinder the operation of medical personnel and the weight of the equipment is reduced. Considering that when using the air pump for suction operation, the manual piston 24 may be subjected to suction and block the vent, thereby preventing normal extraction and infusion, before using the air pump, the top of the L-slot on the manual piston 24 needs to be straightened by the detachable piston handle 23 and rotated to a certain angle. At this time, the manual piston 24 will be jammed, and the position of the manual piston 24 will not be affected when the air pump performs suction operation.

[0067] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intra-articular perfusion device, comprising a perfusion housing (1), characterized in that: The outer wall of the perfusion housing (1) is fixedly connected to a liquid extraction mechanism (2); the inner wall of the perfusion housing (1) is slidably connected to a cleaning mechanism (3); the inner wall of the cleaning mechanism (3) is slidably connected to the outer wall of the liquid extraction mechanism (2); the inner wall of the perfusion housing (1) is clamped to a quantitative housing (11); the inner wall of the quantitative housing (11) is clamped to an injection head (12); and the inner wall of the perfusion housing (1) is fixedly connected to an air inlet (13); The liquid pumping mechanism (2) comprises a liquid pumping housing (21), the inner wall of the liquid pumping housing (21) is slidably connected to a pneumatic piston (25), the top of the pneumatic piston (25) is overlapped with a fixed housing (22), the inner wall of the fixed housing (22) is slidably connected to a manual piston (24), the inner wall of the manual piston (24) is slidably connected to a detachable piston handle (23), the inner wall of the liquid pumping housing (21) is fixedly connected to a liquid discharge port (26), the outer wall of the liquid discharge port (26) is fixedly connected to a collecting housing (27), and the inner wall of the collecting housing (27) is fixed to the outer wall of the perfusion housing (1). The inner wall of the liquid pumping housing (21) is fixedly connected to a one-way valve block (28), the inner wall of the one-way valve block (28) is fixedly connected to a return spring, one end of the return spring is fixedly connected to a one-way valve baffle (29), the outer wall of the one-way valve baffle (29) is slidably connected to the inner wall of the one-way valve block (28), the inner wall of the fixed housing (22) is provided with a vent hole, the outer wall of the liquid pumping housing (21) is fixedly connected to a baffle, the inner wall of the liquid pumping housing (21) is provided with ventilation grooves, and there are six groups of ventilation grooves; the six groups of ventilation grooves are through grooves and are evenly distributed on the circumference of the liquid pumping housing (21); The cleaning mechanism (3) comprises a cleaning liquid piston (31), the outer wall of the cleaning liquid piston (31) is slidably connected to the inner wall of the perfusion shell (1), the bottom of the cleaning liquid piston (31) is fixedly connected to a limiting rod (32), the outer wall of the limiting rod (32) is slidably connected to a limiting block (33), the outer wall of the limiting block (33) is provided with a guide groove, and there are three groups of guide holes, the inner wall of the limiting block (33) is slidably connected to a driven rod (34), the bottom of the driven rod (34) is fixedly connected to a cleaning liquid stopper (35), the inner wall of the cleaning liquid piston (31) is slidably connected to the outer wall of the liquid extraction shell (21), the inner wall of the cleaning liquid piston (31) is clamped with an opening and closing shell (36), the inner wall of the opening and closing shell (36) is provided with connecting holes, and there are two groups of connecting holes, the two groups of connecting holes are at an angle of 90 degrees on the circumference of the opening and closing shell (36), and the opening and closing shell (36) is provided with a connecting hole. The outer wall of the closing shell (36) is rotatably connected to the inner wall of the liquid extraction shell (21); the top of the opening and closing shell (36) is fixedly connected to an adjusting wheel (38); the outer wall of the adjusting wheel (38) is rotatably connected to an adjusting shell (37); the top of the adjusting shell (37) is fixedly connected to the bottom of the fixed shell (22); the bottom of the adjusting shell (37) is fixedly connected to the top of the perfusion shell (1); the outer wall of the adjusting wheel (38) is fixedly connected to an adjusting block (39); the inner wall of the adjusting block (39) is slidably connected to the outer wall of the adjusting shell (37); the outer wall of the cleaning liquid stopper (35) is slidably connected to the outer wall of the baffle; the outer wall of the opening and closing shell (36) is provided with connecting grooves, and there are six groups of connecting grooves, which are through grooves and are evenly distributed on the circumference of the opening and closing shell (36); in the initial state, the six groups of ventilation grooves correspond to the six groups of connecting grooves.

2. An intra-articular perfusion device according to claim 1, characterized in that: The inner wall of the liquid pumping housing (21) is fixedly connected to a limit plate, and the outer wall of the opening and closing housing (36) is fixedly connected to a baffle.

3. The intra-articular perfusion device according to claim 1, characterized in that: The inner wall of the collecting shell (27) is fixedly connected with a discharge port (14).

4. The intra-articular perfusion device according to claim 1, characterized in that: The inner wall of the manual piston (24) is provided with a T-slot, and there are two groups of T-slots. The outer wall of each group of the detachable piston handle (23) is slidably connected to the inner wall of the T-slot.

5. The intra-articular perfusion device according to claim 1, characterized in that: The inner wall of the fixed housing (22) is provided with L-shaped grooves, and there are two groups of L-shaped grooves. The inner wall of each group of L-shaped grooves is slidably connected to the outer wall of the manual piston (24).

6. The intra-articular perfusion device according to claim 1, characterized in that: The inner wall of the adjusting housing (37) is provided with a 90-degree rotating groove, and there are two groups of rotating grooves. The inner wall of each group of rotating grooves is rotatably connected to the inner wall of the adjusting wheel (38).

7. The intra-articular perfusion device according to claim 1, characterized in that: The regulating wheel (38) can be adjusted to a plurality of gears, namely 0 degree, 30 degrees, 60 degrees and 90 degrees.

8. The intra-articular perfusion device according to claim 1, characterized in that: A cavity is provided inside the quantitative housing (11), and a cleaning liquid cavity is provided in the area surrounded by the infusion housing (1), the liquid extraction housing (21) and the cleaning liquid piston (31).

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