CN113521406B - Rheumatoid arthritis patient joint cavity hydrops extraction equipment - Google Patents

Rheumatoid arthritis patient joint cavity hydrops extraction equipment Download PDF

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CN113521406B
CN113521406B CN202110781949.XA CN202110781949A CN113521406B CN 113521406 B CN113521406 B CN 113521406B CN 202110781949 A CN202110781949 A CN 202110781949A CN 113521406 B CN113521406 B CN 113521406B
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plug
block
fixedly connected
magnetic
rod
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CN113521406A (en
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张锌
李爽
南鹤
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Jilin University
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Jilin University
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Abstract

The invention relates to the technical field of rheumatoid arthritis, and discloses joint cavity effusion extraction equipment for patients with rheumatoid arthritis, which comprises a needle tube, wherein a liquid extraction plug is slidably connected inside the needle tube, the top of the liquid extraction plug is fixedly connected with a push-pull rod, a plug is arranged at the bottom of the needle tube, a needle head is fixedly connected at the bottom of the plug, a slide block is rotatably connected at the other side of an elastic rod, a magnetic separation sheet is fixedly connected at the bottom of a bearing cavity, an exhaust tube is fixedly connected at the side surface of the plug, a rotating shaft is arranged inside the exhaust tube, a toothed bar is meshed and connected with the side surface of the rotating shaft, and a magnetic block is fixedly connected at the top of the toothed bar. This type of rheumatoid arthritis patient joint cavity hydrops extraction equipment uses through the cooperation of plug with air exhaust mechanism to reached when filling the liquid medicine into the joint cavity, avoided the bacterium in the residual air in the plug to enter into the inside effect that influences the joint cavity and resume of joint cavity.

Description

Rheumatoid arthritis patient joint cavity hydrops extraction equipment
Technical Field
The invention relates to the technical field of rheumatoid arthritis, in particular to equipment for extracting hydrops in joint cavities of patients with rheumatoid arthritis.
Background
Rheumatoid arthritis is a chronic systemic disease mainly comprising inflammatory synovitis, and is characterized in that multiple joints of hand and foot small joints are symmetrical and invasive, joint inflammation is often accompanied with positive serum rheumatoid factor accumulation of external organs of the joints, joint deformity and function loss can be caused, the joint is affected to show that multiple joints are affected to be symmetrical polyarthritis, the affected joints include hand, foot, wrist, ankle, temporomandibular joint and the like, and the other joints can include elbows, shoulders, cervical vertebrae, hips, knee joints and the like.
Present rheumatoid arthritis patient's easy joint that is tired is the knee, because the inflammation can appear in knee joint department, hydrops can appear in the knee inside under the effect of inflammation, these hydrops can seriously influence patient's walking, can lead to the patient to lie in the bed even, the event needs regularly to carry out the puncture drawing liquid to rheumatoid arthritis patient's knee joint, the process of puncture is inside inserting the joint chamber through the needle tubing, take out the hydrops of joint chamber inside afterwards, after the hydrops is taken out, need fill the liquid medicine into to joint chamber inside, help joint intracavity portion inflammation resumes.
In the process of filling into the liquid medicine, need extract the plug of syringe needle one side with the drawing liquid needle tubing, insert the plug of syringe needle one side with the needle tubing that has the liquid medicine in, push the liquid medicine inside the joint chamber again, whole process syringe needle is not pulling out the joint chamber, however insert the inside back of plug with the needle tubing, the inside air that can remain of plug, bacterium can remain in the air, when pushing the liquid medicine inside the joint chamber, these bacterium can follow thereupon enter into the joint chamber, the inflammation to the joint chamber resumes to cause adverse effect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a joint cavity hydrops extraction device for patients with rheumatoid arthritis, which has the advantages that when the joint cavity is filled with liquid medicine, bacteria in residual air in a plug are prevented from entering the interior of the joint cavity to influence the recovery of the joint cavity, and the like, and the problem that when the joint cavity is filled with liquid medicine, the bacteria in the residual air in the plug enter the interior of the joint cavity to influence the recovery of the joint cavity is solved.
(II) technical scheme
In order to achieve the purpose of preventing bacteria in residual air in the plug from entering the inside of the joint cavity to influence the recovery of the joint cavity when the liquid medicine is filled into the joint cavity, the invention provides the following technical scheme: the utility model provides a rheumatoid arthritis patient joint cavity hydrops extraction equipment, includes the needle tubing, the inside sliding connection of needle tubing has the drawing liquid stopper, the top fixedly connected with push-and-pull rod of drawing liquid stopper, the bottom of needle tubing is provided with the plug, the bottom fixedly connected with syringe needle of plug, the side of needle tubing is provided with air exhaust mechanism, air exhaust mechanism's inside fixed mounting has the extrusion piece, the top of extrusion piece is provided with and holds the piece, air exhaust mechanism's inside is provided with leak protection liquid mechanism.
Preferably, the inside of accepting the piece has been seted up and has been accepted the chamber, the inside of accepting the chamber is provided with the transfer line, one side fixedly connected with atress board that the transfer line is close to the needle tubing center, the side fixedly connected with magnetic sheet of transfer line, the side of transfer line just is located one side of magnetic sheet and rotates and is connected with the power storage pole, one side sliding connection who keeps away from the transfer line of power storage pole has the piece of blockking, one side rotation that the power storage pole is close to the transfer line is connected with the elastic rod, the opposite side rotation of elastic rod is connected with the slider, the side of slider is provided with sliding chamber, the bottom fixedly connected with who accepts the chamber separates the magnetic sheet, the side fixedly connected with exhaust tube of plug, the inside of exhaust tube is provided with the pivot, the side meshing of pivot is connected with the ratch, the top fixedly connected with magnetic path of ratch.
Preferably, the sliding block is located at one end of the inner side of the sliding cavity in the initial period, and when the transmission rod initially moves, the sliding block stops the transmission rod, and therefore moving and force storage are completed.
Preferably, the magnetic separation sheet is provided with a magnetic leakage hole on the side surface, and the magnetic plate is initially positioned on one side of the magnetic leakage hole and initially blocks a magnetic channel between the magnetic block and the magnetic plate.
Preferably, the side of the rotating shaft is provided with an air exhaust fan, and the direction of the exhaust force is outward from the plug.
Preferably, the toothed bar is partially meshed with the rotating shaft, the toothed bar is automatically separated from the meshing with the rotating shaft after moving, the magnetism of the magnetic block is the same as that of the magnetic plate, and the magnetic channel is isolated by the magnetic shielding sheet initially.
Preferably, the inside fixed mounting of leak protection liquid mechanism has the supporting shoe, the side of supporting shoe is rotated and is connected with the extension bar, one side fixedly connected with screw rod that the extension bar is far away from the supporting shoe, the both sides of screw rod are provided with the shrink spring, one side fixedly connected with baffle that the extension bar was kept away from to the shrink spring, the side sliding connection of baffle has the fender liquid board, the inside fixedly connected with gas leakage piece of fender liquid board, the meshing groove has been seted up to the inside of fender liquid board.
Preferably, the retraction spring is continuously in a compressed state, so that the baffle is continuously compressed against the side surface of the liquid baffle, and the air leakage block is not blocked by the baffle initially.
(III) advantageous effects
Compared with the prior art, the invention provides a device for extracting hydrops in joint cavities of patients with rheumatoid arthritis, which has the following beneficial effects:
1. this kind of rheumatoid arthritis patient joint chamber hydrops extraction equipment, use through the cooperation of plug with air exhaust mechanism, when carrying out the hydrops extraction to the joint chamber, insert joint intracavity portion with the syringe needle, after accomplishing the hydrops extraction of joint intracavity portion, need to change the needle tubing and carry out filling of liquid medicine, and when inserting new needle tubing inside the plug, the inside exhaust tube of air exhaust mechanism can take out the inside remaining air of plug, and then avoid the bacterium in the air to enter into joint intracavity portion along with the liquid medicine, thereby reached when filling the liquid medicine into the joint chamber, the bacterium of avoiding in the residual air in the plug enters into the inside effect that influences joint chamber and resume of joint chamber.
2. The joint cavity effusion extraction equipment for patients with rheumatoid arthritis is used by matching the exhaust tube with the liquid leakage prevention mechanism, after air in the plug is extracted, the pressure in the plug is reduced, so that liquid medicine in the needle tube is sucked into the plug and extrudes the liquid baffle plate, and the porous gas leakage block in the liquid baffle plate has larger resistance to the liquid medicine, so that the liquid baffle plate can move under the action of the liquid medicine pressure to cause the screw rod to be inserted into the meshing groove, so that the screw rod is meshed with the meshing groove during moving and further rotates to drive the extension rod on the side surface to rotate, the extension rod can drive the baffle plate to rotate through the contraction spring, the contraction spring is continuously in an extruded state, so that the baffle plate can continuously extrude the liquid baffle plate, the gas leakage block is not blocked at the beginning, and the gas leakage block is gradually blocked along with the sliding of the baffle plate on the side surface of the liquid baffle plate, and then the condition that the liquid medicine leaks from the exhaust tube is avoided, thereby achieving the effect of avoiding the leakage of the liquid medicine when the plug is exhausted.
Drawings
FIG. 1 is a schematic cross-sectional view of the entire structure of the present invention;
FIG. 2 is a schematic view of the structure and plug connection mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of a structural support chamber of the present invention;
FIG. 4 is an enlarged view of part A of FIG. 3 according to the present invention;
FIG. 5 is a schematic cross-sectional view of a structural pump-out tube of the present invention;
FIG. 6 is a schematic cross-sectional view of a liquid leakage prevention mechanism of the present invention;
FIG. 7 is an enlarged view of portion B of the block diagram of FIG. 6 according to the present invention.
In the figure: 1. a needle tube; 2. a liquid extraction plug; 3. a push-pull rod; 4. a plug; 5. a needle head; 6. an air extraction mechanism; 601. extruding the block; 602. a bearing block; 603. a receiving chamber; 604. a transmission rod; 605. a stress plate; 606. a force storage rod; 607. a blocking block; 608. a magnetic plate; 609. a magnetic shield sheet; 610. an elastic rod; 611. a slider; 612. a slide chamber; 613. an air exhaust pipe; 614. a rotating shaft; 615. a rack bar; 616. a magnetic block; 7. a liquid leakage prevention mechanism; 701. a support block; 702. an extension bar; 703. a retraction spring; 704. a baffle plate; 705. a screw; 706. a liquid baffle; 707. a gas leakage block; 708. engaging the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1-7, an apparatus for extracting effusion from a joint cavity of a rheumatoid arthritis patient includes a needle tube 1, a liquid drawing plug 2 slidably connected inside the needle tube 1, a push-pull rod 3 fixedly connected to the top of the liquid drawing plug 2, a plug 4 arranged at the bottom of the needle tube 1, a needle head 5 fixedly connected to the bottom of the plug 4, an air extracting mechanism 6 arranged at a side of the needle tube 1, an extruding block 601 fixedly mounted inside the air extracting mechanism 6, a receiving block 602 arranged above the extruding block 601, a receiving chamber 603 arranged inside the receiving block 602, a transmission rod 604 arranged inside the receiving chamber 603, a stressed plate 605 fixedly connected to a side of the transmission rod 604 close to the center of the needle tube 1, a magnetic plate 608 fixedly connected to a side of the transmission rod 604, an accumulation rod 606 rotatably connected to a side of the transmission rod 604 and a side of the magnetic plate 608, a blocking block 607 slidably connected to a side of the accumulation rod 606 far away from the transmission rod 604, one side of the power storage rod 606 close to the transmission rod 604 is rotatably connected with an elastic rod 610, the other side of the elastic rod 610 is rotatably connected with a sliding block 611, the sliding block 611 is initially positioned at one end of the inner side of a sliding cavity 612, the transmission rod 604 is prevented from moving initially so as to finish moving power storage, the sliding cavity 612 is arranged on the side surface of the sliding block 611, a magnetic separation sheet 609 is fixedly connected with the bottom of the receiving cavity 603, a magnetic leakage hole is formed in the side surface of the magnetic separation sheet 609, the magnetic plate 608 is initially positioned at one side of the magnetic leakage hole, a magnetic channel between the magnetic block 616 and the magnetic plate 608 is blocked initially, a suction pipe 613 is fixedly connected to the side surface of the plug 4, a rotating shaft 614 is arranged inside the suction pipe 613, a suction fan is arranged on the side surface of the rotating shaft 614, the suction direction is outward from the plug 4, a toothed rod 615 is engaged with the side surface of the rotating shaft 614, the toothed rod 615 is partially engaged with the rotating shaft 614, and automatically disengaged from the rotating shaft 614 after the toothed rod 615 moves, the top of the rack bar 615 is fixedly connected with a magnetic block 616, the magnetic block 616 and the magnetic plate 608 have the same magnetism, and the magnetic channel is isolated by a magnetic separation sheet 609 at the beginning, and a liquid leakage prevention mechanism 7 is arranged inside the air exhaust mechanism 6.
When liquid accumulation in the joint cavity is extracted, the needle head 5 is inserted into the joint cavity, after the liquid accumulation in the joint cavity is extracted, the needle tube 1 needs to be replaced to fill liquid medicine, in the process of inserting a new needle tube 1 into the plug 4, the liquid medicine cannot leak into the plug 4 under the action of self hydraulic tension, in the process of inserting the needle tube 1 into the plug 4, the extrusion block 601 can continuously extrude the stress plate 605, so that the stress plate 605 drives the transmission rod 604 to gradually move in the bearing cavity 603, in the initial process, the force accumulation rod 606 on the side surface of the transmission rod 604 can be blocked by the blocking block 607, so that the force accumulation rod 606 extrudes the sliding block 611 on one side of the elastic rod 610, because the sliding block 611 is located at one end of the inner side of the sliding cavity 612 in the initial process, the sliding block 611 cannot move, along with the contraction of the elastic rod 610, the force accumulation rod 606 gradually crosses the blocking block 607, and when the liquid accumulation completely crosses over, the transmission rod 604 can rapidly drive the magnetic plate 608 on the side surface to move above the magnetic leakage hole formed in the surface of the magnetic separation sheet 609, so that the magnetic plate 608 and the magnetic block 616 below have a magnetic action.
Because the magnetic block 616 and the magnetic plate 608 have the same magnetism, the magnetic block 616 can drive the rack bar 615 to move rapidly under the action of the magnetic force, and because the rack bar 615 is partially meshed with the rotating shaft 614, the rotating shaft 614 meshed with the rack bar can continuously drive the air suction fan on the side surface to rotate under the action of the inertia force, so that the air remained in the plug 4 is sucked out through the air suction pipe 613, bacteria in the air are prevented from entering the interior of the joint cavity along with the liquid medicine, and the effect that the bacteria in the air remained in the plug 4 are prevented from entering the interior of the joint cavity to influence the recovery of the joint cavity when the liquid medicine is filled into the joint cavity is achieved.
The second embodiment: referring to fig. 1-7, an apparatus for extracting hydrops from joint cavity of rheumatoid arthritis patient comprises a needle tube 1, a liquid drawing plug 2 is slidably connected inside the needle tube 1, a push-pull rod 3 is fixedly connected to the top of the liquid drawing plug 2, a plug 4 is arranged at the bottom of the needle tube 1, a needle head 5 is fixedly connected to the bottom of the plug 4, an air extracting mechanism 6 is arranged at the side of the needle tube 1, a squeezing block 601 is fixedly installed inside the air extracting mechanism 6, a receiving block 602 is arranged above the squeezing block 601, a liquid leakage preventing mechanism 7 is arranged inside the air extracting mechanism 6, a supporting block 701 is fixedly installed inside the liquid leakage preventing mechanism 7, an extension bar 702 is rotatably connected to the side of the supporting block 701, a screw 705 is fixedly connected to one side of the extension bar 702 far away from the supporting block 701, contraction springs 703 are arranged at two sides of the screw 704, the contraction springs 703 are continuously in a squeezed state, so that a baffle 705 is continuously squeezed against the side of a liquid blocking plate 706, a baffle 704 is fixedly connected to one side of the contraction spring 703, which is far away from the extension rod 702, the baffle 704 does not block the air leakage block 707 initially, a liquid baffle 706 is slidably connected to the side surface of the baffle 704, the air leakage block 707 is fixedly connected to the inside of the liquid baffle 706, and an engagement groove 708 is formed in the inside of the liquid baffle 706.
After the air in the plug 4 is pumped out, the pressure in the plug 4 is reduced, so that the liquid medicine in the needle tube 1 is sucked into the plug 4, and the liquid baffle 706 is squeezed, the resistance of the porous air leakage block 707 in the liquid baffle 706 to the liquid medicine is large, so that the liquid baffle 706 moves under the action of the liquid medicine pressure, the screw 705 is inserted into the engagement groove 708, the screw 705 is engaged with the engagement groove 708 during moving, and then rotates, the extension rod 702 on the side is driven to rotate, the extension rod 702 drives the baffle 704 to rotate through the contraction spring 703, because the contraction spring 703 is continuously in a squeezed state, the baffle 704 continuously squeezes the liquid baffle 706, and the air leakage block 707 is not blocked by the baffle 704 at the beginning, so that the air leakage block 707 is gradually blocked along with the sliding of the baffle 704 on the side of the liquid baffle 706, and the situation that the liquid medicine leaks from the suction pipe 613 is avoided, thereby achieving the effect of avoiding the leakage of the liquid medicine when the plug 4 is pumped.
Example three: referring to fig. 1-7, an apparatus for extracting effusion from a joint cavity of a rheumatoid arthritis patient comprises a needle tube 1, a liquid-extracting plug 2 is slidably connected inside the needle tube 1, a push-pull rod 3 is fixedly connected to the top of the liquid-extracting plug 2, a plug 4 is arranged at the bottom of the needle tube 1, a needle 5 is fixedly connected to the bottom of the plug 4, an air-extracting mechanism 6 is arranged at the side surface of the needle tube 1, a squeezing block 601 is fixedly installed inside the air-extracting mechanism 6, a receiving block 602 is arranged above the squeezing block 601, a receiving cavity 603 is arranged inside the receiving block 602, a transmission rod 604 is arranged inside the receiving cavity 603, a stressed plate 605 is fixedly connected to one side of the transmission rod 604 close to the center of the needle tube 1, a magnetic plate 608 is fixedly connected to the side surface of the transmission rod 604, an accumulation rod 606 is rotatably connected to one side of the transmission rod 604 and a blocking block 607 is slidably connected to one side of the accumulation rod 606 far away from the transmission rod, one side of the power storage rod 606 close to the transmission rod 604 is rotatably connected with an elastic rod 610, the other side of the elastic rod 610 is rotatably connected with a sliding block 611, the sliding block 611 is initially positioned at one end of the inner side of a sliding cavity 612, the transmission rod 604 is prevented from moving initially so as to finish moving power storage, the sliding cavity 612 is arranged on the side surface of the sliding block 611, a magnetic separation sheet 609 is fixedly connected with the bottom of the receiving cavity 603, a magnetic leakage hole is formed in the side surface of the magnetic separation sheet 609, the magnetic plate 608 is initially positioned at one side of the magnetic leakage hole, a magnetic channel between the magnetic block 616 and the magnetic plate 608 is blocked initially, a suction pipe 613 is fixedly connected to the side surface of the plug 4, a rotating shaft 614 is arranged inside the suction pipe 613, a suction fan is arranged on the side surface of the rotating shaft 614, the suction direction is outward from the plug 4, a toothed rod 615 is engaged with the side surface of the rotating shaft 614, the toothed rod 615 is partially engaged with the rotating shaft 614, and automatically disengaged from the rotating shaft 614 after the toothed rod 615 moves, the top of the rack bar 615 is fixedly connected with a magnetic block 616, the magnetic block 616 has the same magnetism as the magnetic plate 608, and the magnetic channel is isolated by the magnetism isolating sheet 609 at the beginning, the liquid leakage prevention mechanism 7 is arranged inside the air exhaust mechanism 6, the support block 701 is fixedly arranged inside the liquid leakage prevention mechanism 7, the side surface of the support block 701 is rotatably connected with the extension bar 702, the side of the extension bar 702 far away from the support block 701 is fixedly connected with the screw 705, the two sides of the screw 705 are provided with the contraction springs 703, the contraction springs 703 are continuously in the extruded state, the baffle 704 is continuously pressed to be attached to the side face of the liquid baffle 706, one side of the contraction spring 703, which is far away from the extension rod 702, is fixedly connected with the baffle 704, the baffle 704 does not block the gas leakage block 707 initially, the side face of the baffle 704 is slidably connected with the liquid baffle 706, the gas leakage block 707 is fixedly connected inside the liquid baffle 706, and the engagement groove 708 is formed inside the liquid baffle 706.
The working principle is that when the effusion in the joint cavity is extracted, the needle head 5 is inserted into the joint cavity, after the effusion in the joint cavity is extracted, the needle tube 1 needs to be replaced to fill the liquid medicine, when a new needle tube 1 is inserted into the plug 4, the liquid medicine cannot leak into the plug 4 under the action of self hydraulic tension, and when the needle tube 1 is inserted into the plug 4, the extrusion block 601 can continuously extrude the stress plate 605, so that the stress plate 605 drives the transmission rod 604 to gradually move in the bearing cavity 603, when the needle tube is inserted into the plug 4, the force storage rod 606 on the side surface of the transmission rod 604 can be blocked by the blocking block 607, so that the force storage rod extrudes the sliding block 611 on one side of the elastic rod 610, because the sliding block 611 is initially positioned at one end of the inner side of the sliding cavity 612, the sliding block 611 cannot move, and along with the contraction of the elastic rod 610, the force storage rod 606 gradually crosses the blocking block 607, when the magnetic shielding plate completely passes by, the transmission rod 604 can rapidly drive the magnetic plate 608 on the side surface to move to the position above the magnetic leakage hole formed in the surface of the magnetic shielding sheet 609, so that the magnetic plate 608 and the magnetic block 616 below have a magnetic action.
Because the magnetic block 616 and the magnetic plate 608 have the same magnetism, the magnetic block 616 can drive the rack bar 615 to move rapidly under the action of the magnetic force, and because the rack bar 615 is partially meshed with the rotating shaft 614, the rotating shaft 614 meshed with the rack bar can continuously drive the air suction fan on the side surface to rotate under the action of the inertia force, so that the air remained in the plug 4 is sucked out through the air suction pipe 613, bacteria in the air are prevented from entering the interior of the joint cavity along with the liquid medicine, and the effect that the bacteria in the air remained in the plug 4 are prevented from entering the interior of the joint cavity to influence the recovery of the joint cavity when the liquid medicine is filled into the joint cavity is achieved.
After the air in the plug 4 is pumped out, the pressure in the plug 4 is reduced, so that the liquid medicine in the needle tube 1 is sucked into the plug 4, and the liquid baffle 706 is squeezed, the resistance of the porous air leakage block 707 in the liquid baffle 706 to the liquid medicine is large, so that the liquid baffle 706 moves under the action of the liquid medicine pressure, the screw 705 is inserted into the engagement groove 708, the screw 705 is engaged with the engagement groove 708 during moving, and then rotates, the extension rod 702 on the side is driven to rotate, the extension rod 702 drives the baffle 704 to rotate through the contraction spring 703, because the contraction spring 703 is continuously in a squeezed state, the baffle 704 continuously squeezes the liquid baffle 706, and the air leakage block 707 is not blocked by the baffle 704 at the beginning, so that the air leakage block 707 is gradually blocked along with the sliding of the baffle 704 on the side of the liquid baffle 706, and the situation that the liquid medicine leaks from the suction pipe 613 is avoided, thereby achieving the effect of avoiding the leakage of the liquid medicine when the plug 4 is pumped.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. The utility model provides a rheumatoid arthritis patient joint cavity hydrops extraction equipment, includes needle tubing (1), its characterized in that: a liquid pumping plug (2) is slidably connected inside the needle tube (1), a push-pull rod (3) is fixedly connected to the top of the liquid pumping plug (2), a plug (4) is arranged at the bottom of the needle tube (1), a needle head (5) is fixedly connected to the bottom of the plug (4), an air pumping mechanism (6) is arranged on the side face of the needle tube (1), an extrusion block (601) is fixedly installed inside the air pumping mechanism (6), a bearing block (602) is arranged above the extrusion block (601), and a liquid leakage preventing mechanism (7) is arranged inside the air pumping mechanism (6);
a bearing cavity (603) is formed in the bearing block (602), a transmission rod (604) is arranged in the bearing cavity (603), a stress plate (605) is fixedly connected to one side, close to the center of the needle tube (1), of the transmission rod (604), a magnetic plate (608) is fixedly connected to the side face of the transmission rod (604), a force storage rod (606) is rotatably connected to one side, located on the magnetic plate (608), of the side face of the transmission rod (604), a blocking block (607) is slidably connected to one side, far away from the transmission rod (604), of the force storage rod (606), an elastic rod (610) is rotatably connected to one side, close to the transmission rod (604), of the force storage rod (606), a sliding block (611) is rotatably connected to the other side of the elastic rod (610), a sliding cavity (612) is formed in the side face of the sliding block (611), and a magnetic partition sheet (609) is fixedly connected to the bottom of the bearing cavity (603), a gas extraction pipe (613) is fixedly connected to the side surface of the plug (4), a rotating shaft (614) is arranged inside the gas extraction pipe (613), a toothed bar (615) is connected to the side surface of the rotating shaft (614) in a meshed manner, and a magnetic block (616) is fixedly connected to the top of the toothed bar (615); the slider (611) is initially located at an inner end of the slide cavity (612); the side surface of the magnetic separation sheet (609) is provided with a magnetic leakage hole, and the magnetic plate (608) is positioned at one side of the magnetic leakage hole initially;
the side surface of the rotating shaft (614) is provided with an air exhaust fan, and the air exhaust fan is arranged in the direction from the plug (4) to the outside; the toothed bar (615) is partially meshed with the rotating shaft (614), the magnetic block (616) and the magnetic plate (608) have the same magnetism, and a magnetic force channel is isolated by the magnetic shielding sheet (609) initially;
a supporting block (701) is fixedly installed inside the liquid leakage prevention mechanism (7), an extension rod (702) is rotatably connected to the side face of the supporting block (701), a screw rod (705) is fixedly connected to one side, away from the supporting block (701), of the extension rod (702), contraction springs (703) are arranged on two sides of the screw rod (705), a baffle (704) is fixedly connected to one side, away from the extension rod (702), of the contraction springs (703), a liquid blocking plate (706) is slidably connected to the side face of the baffle (704), a gas leakage block (707) is fixedly connected to the inside of the liquid blocking plate (706), and a meshing groove (708) is formed in the inside of the liquid blocking plate (706);
the liquid leakage prevention mechanism (7) is arranged in a pumping pipe (613) of the pumping mechanism (6), the supporting block (701) and the extension rod (702) are arranged on two sides of the rotating shaft (614), and the liquid baffle plate (706) is arranged on the inlet of the pumping pipe (613), namely on one side close to the plug (4).
2. The rheumatoid arthritis patient joint cavity hydrops extraction device of claim 1, wherein: the contraction spring (703) is continuously in a compressed state, and the air leakage block (707) is not blocked by the baffle (704) at the beginning.
CN202110781949.XA 2021-07-12 2021-07-12 Rheumatoid arthritis patient joint cavity hydrops extraction equipment Active CN113521406B (en)

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