CN112451759A - PICC pipe booster unit - Google Patents
PICC pipe booster unit Download PDFInfo
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- CN112451759A CN112451759A CN202011329862.0A CN202011329862A CN112451759A CN 112451759 A CN112451759 A CN 112451759A CN 202011329862 A CN202011329862 A CN 202011329862A CN 112451759 A CN112451759 A CN 112451759A
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- 239000007788 liquid Substances 0.000 claims abstract description 51
- 239000003814 drug Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 6
- 210000002445 nipple Anatomy 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 4
- 238000012377 drug delivery Methods 0.000 abstract description 3
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000002537 thrombolytic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- 108010046334 Urease Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 208000036828 Device occlusion Diseases 0.000 description 1
- 206010073310 Occupational exposures Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 229940044683 chemotherapy drug Drugs 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000675 occupational exposure Toxicity 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The invention relates to the technical field of medical instruments. The PICC catheter power assisting device comprises a negative pressure device, a medicine supply device and a three-way device; the three-way device comprises a first connecting pipe, a second connecting pipe and a third connecting pipe which are mutually communicated and connected; the first connecting pipe is in sealed conduction connection with an air pumping port of the negative pressure device; the second connecting pipe is communicated with the liquid outlet of the medicine supply device; the third connecting pipe is in sealed conduction connection with the PICC catheter; the medicine supply device is used for controlling the liquid medicine to automatically enter the PICC catheter. The PICC catheter power assisting device can achieve automatic drug delivery and reduce manual operation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a PICC catheter power assisting device.
Background
The central venous catheter (PICC) placed through the peripheral vein has the advantages of long retention time, relieving the pain of repeated puncture and reducing the stimulation and damage of chemotherapy drugs or hypertonic liquid to blood vessels, so that the PICC is widely applied to tumor chemotherapy patients. However, the PICC catheter is slender, the treatment course of a tumor patient is long in spanning time, the stimulation of treatment medicines is strong, the incidence rate of catheter blockage is high, if the treatment is not timely, unplanned catheter drawing can be caused, the treatment is interrupted, and the pain and the economic burden of the patient are increased.
In order to solve the problem of complete blockage of the PICC, thrombolytic treatment is clinically required. The existing thrombolysis auxiliary equipment generally comprises a three-way valve, a dosing injector and a suction injector, wherein one tube head of the three-way valve is connected to the end of a PICC (peripherally inserted central catheter), urease is extracted from the dosing injector and is connected to the three-way valve, and the other empty suction injector is connected to the three-way valve; during the use, utilize the tee bend will aspirate syringe and PICC pipe end intercommunication, empty aspiration syringe for form the negative pressure in the PICC pipe, the handle that needs manual pulling aspiration syringe this moment is in order to guarantee the negative pressure, switches the three-way valve and makes administration syringe and PICC pipe intercommunication, utilizes the negative pressure to form and will be located the urease injection PICC pipe of administering the syringe in.
Publication number CN208574126U discloses PICC stifled pipe thrombolysis tee bend auxiliary device, utilizes negative pressure aspirator cooperation three-way valve to reach the purpose of suction negative pressure, and it is more convenient to use. However, this device requires little effort in drawing negative pressure or additional manual work to operate the three-way valve, and it is only possible to determine whether or not the drug can be administered by feel each time the negative pressure is drawn.
In addition, the device also has the liquid in the PICC pipe and gets into in the negative pressure aspirator, leads to the disabled risk of negative pressure aspirator, has greatly improved the cost.
In conclusion, the PICC catheter power assisting device capable of conveniently and automatically feeding medicine according to the negative pressure condition is designed, and the labor can be really saved to a great extent.
Content of application
The invention aims to provide a PICC catheter power assisting device which can realize automatic drug delivery and reduce manual operation.
The embodiment of the invention is realized by the following technical scheme: the PICC catheter power assisting device comprises a negative pressure device, a medicine supply device and a three-way device; the three-way device comprises a first connecting pipe, a second connecting pipe and a third connecting pipe which are mutually communicated and connected; the first connecting pipe is in sealed conduction connection with an air pumping port of the negative pressure device; the second connecting pipe is communicated with the liquid outlet of the medicine supply device; the third connecting pipe is in sealed conduction connection with the PICC catheter; the medicine supply device is used for controlling the liquid medicine to automatically enter the PICC catheter.
Further, the medicine supply device comprises an injector and an automatic valve, and a nipple of the injector is communicated with the second connecting pipe; the automatic valve comprises a liquid inlet pipe, a connecting rod fixed on the inner wall of the liquid inlet pipe and a sealing block fixedly connected with the connecting rod through a telescopic strip; the liquid inlet pipe is communicated and coaxially connected between the nipple of the injector and the second connecting pipe; the inner diameter of the liquid inlet pipe is smaller than that of the second connecting pipe; the sealing block is arranged at one end of the liquid inlet pipe close to the second connecting pipe and is in sealing sliding connection with the inner wall of the liquid inlet pipe.
Furthermore, a filtering device is connected between the first connecting pipe and the negative pressure device in a conduction manner, and the filtering device is detachably connected with the negative pressure device; the filter device comprises a plurality of filters which are sequentially connected in a conducting manner, and water absorption cotton is arranged in each filter.
Further, the negative pressure device comprises a vacuum tube and a first negative pressure cavity arranged in the vacuum tube; one end of the first negative pressure cavity is communicated with the first connecting pipe, and the other end of the first negative pressure cavity is communicated with the vent pipe; a first one-way valve is arranged between the first negative pressure cavity and the first connecting pipe; a second one-way valve is arranged between the first negative pressure cavity and the vent pipe; the side wall of the vacuum tube is provided with a second negative pressure cavity communicated with the first negative pressure cavity; the second negative pressure cavity is communicated with an air exhaust device; the first one-way valve is used for preventing gas from entering the first connecting pipe from the first negative pressure cavity; the second one-way valve is used for preventing gas from entering the first negative pressure cavity through the vent pipe.
Further, the air extractor comprises a cylinder body fixedly arranged on the side wall of the vacuum tube and communicated with the second negative pressure cavity, a piston arranged in the cylinder body and a driving device used for driving the piston to reciprocate in the cylinder body.
Furthermore, a pair of second negative pressure cavities is arranged and distributed along the length direction of the vacuum tube; the air extracting devices are provided with a pair; one air extractor is connected with one second negative pressure cavity in a conduction mode, and the other air extractor is connected with the other second negative pressure cavity in a conduction mode.
Further, the driving device comprises a holding rod; a piston of an air extractor is fixedly connected with a push rod, one end of the push rod of a pair of air extractors, which is far away from the piston, is fixed on a holding rod, and the holding rod is vertical to the push rod.
The vacuum tube is characterized by further comprising a U-shaped frame, wherein one end of the U-shaped frame is fixedly connected with the side wall of one end of the vacuum tube, and the other end of the U-shaped frame is fixedly connected with the side wall of the other end of the vacuum tube; the holding rod is arranged between the cross rod of the U-shaped frame and the vacuum tube.
Furthermore, the device also comprises a guide device, wherein the guide device comprises a guide rod and a spring sleeved on the guide rod; the guide rod vertically penetrates through the holding rod and is connected with the holding rod in a sliding manner; one end of the guide rod is fixedly connected with the side wall of the vacuum tube, and the other end of the guide rod is fixedly connected with the cross rod of the U-shaped frame; the spring is arranged between the holding rod and the vacuum tube, one end of the spring is fixedly connected with the holding rod, and the other end of the spring is fixedly connected with the vacuum tube.
Further, the device also comprises an electric device; the electric device comprises a base, a motor fixedly arranged on the base, a screw rod fixedly connected with an output shaft of the motor, a nut in threaded connection with the screw rod and a first connecting plate fixedly connected with the nut; the screw rod is vertical to the holding rod; one end of the base, which is close to the U-shaped frame, is provided with a second connecting plate; the second connecting plate is abutted against one side of the U-shaped frame, which is far away from the vacuum tube, and the first connecting plate is abutted against one side of the holding rod, which is close to the vacuum tube.
The technical scheme of the invention at least has the following beneficial effects: according to the PICC catheter power assisting device, the negative pressure device is used for providing negative pressure for the three-way device and the PICC catheter, and the medicine supply device is used for controlling liquid medicine in the injector to automatically enter the PICC catheter under certain negative pressure, so that the use of manpower is reduced, and the accuracy and the standardability of each administration can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic illustration of a PICC catheter assist device in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a PICC catheter assist device provided in accordance with an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Icon: 10-three-way device, 11-first connecting pipe, 12-second connecting pipe, 13-third connecting pipe, 21-vacuum pipe, 22-first negative pressure cavity, 23-second negative pressure cavity, 24-first one-way valve, 25-filter, 26-absorbent cotton, 30-medicine supply device, 31-liquid inlet pipe, 32-connecting rod, 33-telescopic bar, 34-sealing block, 35-injector, 41-cylinder, 42-piston, 43-push rod, 44-holding rod, 45-spring, 46-U-shaped frame, 47-guide rod, 51-vent pipe, 52-second one-way valve, 60-electric device, 61-base, 62-motor, 63-lead screw, 64-first connecting plate, 65-second connecting plate, 70-PICC catheter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the PICC catheter assist device of this embodiment includes a negative pressure device, a drug delivery device 30, and a three-way device 10; the three-way device 10 comprises a first connecting pipe 11, a second connecting pipe 12 and a third connecting pipe 13 which are communicated and connected with each other; the first connecting pipe 11 is in sealed conduction connection with an air suction port of the negative pressure device; the second connecting pipe 12 is in conduction connection with a liquid outlet of the medicine supply device 30; the third connecting tube 13 is connected with the PICC catheter 70 in a sealing and conducting manner; the drug supply device 30 is used for controlling the automatic entry of the drug solution into the catheter. Specifically, the PICC catheter power assisting device of the present embodiment is mainly used for thrombolysis when the PICC catheter 70 is blocked; when using, switch on through vacuum device and tee bend device 10 and PICC pipe 70 intermittent type nature and draw into the negative pressure with the space in tee bend device 10 and the PICC pipe 70 gradually, supply medicine device 30 to be in the closing device this moment, the liquid medicine in the medicine device 30 can't enter into tee bend device 10 and PICC pipe 70, when pressure drops to certain level, trigger and supply medicine device 30, supply medicine device 30 to be in the open mode this moment, the liquid medicine in the medicine device 30 can enter into tee bend device 10 and PICC pipe 70 under the effect of pressure differential, and then enter into the human body in the obstructed position of PICC pipe 70, play the effect of dissolving the jam. Because supply medicine device 30 is triggered by pressure, therefore do not need artificial judgement, also need not the manual work to switch on supply medicine device 30 and PICC pipe 70, just can accomplish whole operating procedure alone, and operating procedure still less, only need periodically to operate negative pressure device and take out the negative pressure, the liquid medicine just can periodically get into PICC pipe 70 in, PICC pipe 70 is inside all to be in same negative pressure when can also guaranteeing liquid medicine entering PICC pipe 70 at every turn like this, improve the standardization of operation.
The medicine supplying device 30 in this embodiment includes an injector 35 and an automatic valve, and a nipple of the injector 35 is communicated with the second connection tube 12; the automatic valve comprises a liquid inlet pipe 31, a connecting rod 32 fixed on the inner wall of the liquid inlet pipe 31, and a sealing block 34 fixedly connected with the connecting rod 32 through a telescopic strip 33; the liquid inlet pipe 31 is communicated and coaxially connected between the nipple of the injector 35 and the second connecting pipe 12; the inner diameter of the liquid inlet pipe 31 is smaller than that of the second connecting pipe 12; the sealing block 34 is disposed at one end of the liquid inlet pipe 31 close to the second connecting pipe 12 and is in sealing sliding connection with the inner wall of the liquid inlet pipe 31. Specifically, the elastic strip 33 in this embodiment is made of a material having a certain elasticity, such as rubber, and may be a spring 45 made of stainless steel. When the device is not used, the telescopic strip 33 is in a free state, the sealing block 34 is positioned inside the liquid inlet pipe 31 and close to the end part, when the negative pressure device is opened for pumping negative pressure, the pressure in the three-way device 10 and the PICC catheter 70 is gradually reduced, and the pressure in the liquid inlet pipe 31 and the injector 35 is kept unchanged, so that a certain pressure difference exists between the liquid inlet pipe 31 and the three-way device 10, the sealing block 34 is pushed to move towards the three-way device 10 by the existence of the pressure difference, the telescopic strip 33 is gradually elongated, when the pressure in the three-way device 10 and the PICC catheter 70 is reduced to a preset level, the sealing block 34 is completely separated from the liquid inlet pipe 31, the injector 35 and the three-way device 10 are conducted, the liquid medicine in the injector 35 can enter the three-way device 10 and the PICC catheter 70, when the negative pressure pumping is stopped, the liquid inlet pipe 31 and the three-way are conducted, at this time, the seal block 34 is pulled back into the inlet tube 31 by the expansion bar 33, and the inlet tube 31 is blocked, so that the liquid medicine cannot flow into the three-way device 10 and the PICC catheter 70. When the medicine needs to be taken again, the negative pressure device is used again to pump the negative pressure. The operation is simple, the time is saved, people do not need to hold the device all the time, and the equipment does not need to be replaced frequently.
In the embodiment, a filtering device is connected between the first connecting pipe 11 and the negative pressure device in a conduction manner, and the filtering device is detachably connected with the negative pressure device; the filtering device comprises a plurality of filters 25 which are sequentially connected in a conducting manner, and water absorption cotton 26 is arranged inside the filters 25. Specifically, during the process of sucking the negative pressure by the negative pressure device, the liquid in the PICC catheter 70, such as water, blood, etc., may enter the three-way device 10 through the PICC catheter 70, but will not enter the liquid inlet tube 31 and the syringe 35, because when the liquid in the PICC catheter 70 first appears and enters the three-way device 10 during the process of sucking the negative pressure, the syringe 35 containing the liquid medicine should be replaced by the empty syringe 35 or the liquid inlet tube 31 should be directly plugged by the plug, and then the normal negative pressure is sucked to suck the blood, blood clot, etc., as much as possible. In order to prevent the liquid in the PICC catheter 70 from flowing into the negative pressure device to pollute the negative pressure device and cause the negative pressure device to be incapable of being reused, and increase the cost, a plurality of filters 25 are additionally arranged between the first connecting pipe 11 and the negative pressure device, and blood and the like are fully absorbed by using the absorbent cotton 26 in the filters 25, and the plurality of filters 25 are arranged, so that whether the filters 25 can be continuously used or not can be judged in real time by observing the condition of the absorbent cotton 26 in the pre-filter 25, the filters 25 can be replaced in time before the last filter 25 starts to absorb water, and the negative pressure device is prevented from being polluted.
The negative pressure device in the embodiment comprises a vacuum tube 21 and a first negative pressure cavity 22 arranged in the vacuum tube 21; one end of the first negative pressure chamber 22 is communicated with the first connecting pipe 11, and the other end is communicated with a vent pipe 51; a first check valve 24 is provided between the first negative pressure chamber 22 and the first connecting pipe 11; a second check valve 52 is arranged between the first negative pressure cavity 22 and the vent pipe 51; the side wall of the vacuum tube 21 is provided with a second negative pressure cavity 23 communicated with the first negative pressure cavity 22; the second negative pressure cavity 23 is communicated with an air exhaust device; the first check valve 24 is used to prevent gas from entering the first connection pipe 11 from the first negative pressure chamber 22; the second check valve 52 prevents gas from entering the first sub-pressure chamber 22 through the vent pipe 51. Specifically, when the air extractor extracts negative pressure, in the first stage, the first one-way valve 24 is flushed by the gas in the PICC catheter 70, the gas in the PICC catheter 70 sequentially passes through the first connecting pipe 11 and the first one-way valve 24 and then enters the first negative pressure cavity 22, meanwhile, the second one-way valve 52 is closed, and the gas in the vent pipe 51 cannot enter the first negative pressure cavity 22; in the second stage, the pressure in the first negative pressure chamber 22 is the same as the pressure in the PICC catheter 70, the first one-way valve 24 is closed, at this time, the gas in the first negative pressure chamber 22 cannot enter the PICC catheter 70, the second one-way valve 52 is opened at the same time, and the gas in the first negative pressure chamber 22 sequentially passes through the second one-way valve 52 and the vent pipe 51 and then enters the outside air. By repeating the first and second stages, the gas in the PICC catheter 70 is continuously vented and a negative pressure is gradually created.
The air extractor in this embodiment includes a cylinder 41 fixedly disposed on the side wall of the vacuum tube 21 and in communication with the second negative pressure chamber 23, a piston 42 disposed in the cylinder 41, and a driving device for driving the piston 42 to reciprocate in the cylinder 41. Specifically, when the piston 42 is moved away from the vacuum tube 21, the total volume of the cylinder 41 and the first negative pressure cavity 22 is increased, the pressure is decreased, and at this time, the air pressure in the PICC catheter 70 and the three-way device 10 is higher than the air pressure in the first negative pressure cavity 22, so that the air in the PICC catheter 70 pushes the first one-way valve 24 open and then enters the first negative pressure cavity 22. When the piston 42 is no longer moving, the PICC catheter 70 gradually conforms to the gas pressure in the first sub-ambient pressure chamber 22, at which time the first one-way valve 24 closes; when the piston 42 moves close to the vacuum tube 21, the total volume of the first cylinder 41 and the first negative pressure chamber 22 gradually decreases, the pressure gradually increases, the second check valve 52 is pushed open, and the gas in the first negative pressure chamber 22 flows from the second check valve 52 to the external atmosphere when the first check valve 24 is closed. Through one piston 42 cycle, a portion of the gas in the PICC catheter 70 is carried away, and the process is cycled continuously to pump out the gas in the PICC catheter 70, gradually creating a negative pressure. It should be noted that, here, in order to be able to draw the negative pressure faster and, ultimately, lower pressure, the volumes of the first negative pressure chamber 22 and the second negative pressure chamber 23 should be designed to be sufficiently small.
The second negative pressure cavities 23 in the embodiment are provided with a pair, and the pair of second negative pressure cavities 23 is distributed along the length direction of the vacuum tube 21; the air extracting devices are provided with a pair; one air extractor is connected with one second negative pressure cavity 23 in a conducting way, and the other air extractor is connected with the other second negative pressure cavity 23 in a conducting way. Specifically, two second negative pressure chambers 23 and two air-extracting devices are designed so that the negative pressure is extracted more quickly. But also more stable and balanced in operation.
The driving means in this embodiment includes a grip 44; the piston 42 of one air extractor is fixedly connected with a push rod 43, one ends of the push rods 43 of the air extractors, far away from the piston 42, are fixed on a holding rod 44, and the holding rod 44 is perpendicular to the push rods 43. Specifically, a grip 44 is provided at one end of the push rod 43, and the negative pressure can be easily drawn by pulling the grip 44.
In this embodiment, the vacuum tube further comprises a U-shaped frame 46, wherein one end of the U-shaped frame 46 is fixedly connected with the side wall of one end of the vacuum tube 21, and the other end of the U-shaped frame 46 is fixedly connected with the side wall of the other end of the vacuum tube 21; the grip 44 is disposed between the cross bar of the U-shaped frame 46 and the vacuum tube 21. Specifically, the user can hold the U-shaped frame 46 and the holding rod 44 at the same time, and then suck negative pressure by repeatedly pinching and releasing the palm, so that labor is saved, and the suction can be conveniently finished by one hand. In addition, when the conventional hollow needle is used for sucking negative pressure, the hollow needle piston can be separated, liquid in the hollow needle can be splashed, and the risk of occupational exposure and the like can be caused. The device can well prevent the piston 42 from slipping off the cylinder 41 by limiting the distance between the cross bar of the U-shaped frame 46 and the vacuum tube 21, and can effectively prevent the risk of liquid splashing by fully filtering the liquid in the PICC catheter 70 through the filter device.
In this embodiment, the device further comprises a guiding device, wherein the guiding device comprises a guiding rod 47 and a spring 45 sleeved on the guiding rod 47; the guide rod 47 vertically penetrates through the holding rod 44 and is connected with the holding rod 44 in a sliding way; one end of the guide rod 47 is fixedly connected with the side wall of the vacuum tube 21, and the other end of the guide rod is fixedly connected with the cross rod of the U-shaped frame 46; the spring 45 is arranged between the holding rod 44 and the vacuum tube 21, and one end of the spring is fixedly connected with the holding rod 44 while the other end is fixedly connected with the vacuum tube 21. Specifically, in order to avoid the piston 42 not moving completely along the cylinder 41 when the negative pressure is pumped, which may cause the jamming of the shell or damage to the device, the guide rods 47 are inserted through the two ends of the grip rod 44, and the restriction of the movement track of the grip rod 44 by the guide rods 47 is equivalent to the restriction of the movement track of the piston 42, so that the piston 42 can reciprocate smoothly in the cylinder 41. In addition, the spring 45 can also directly pull back the holding rod 44 far away from the vacuum tube 21 to the original position, so that the step of manually putting the holding rod 44 in the original position is omitted, and the operation is more humanized, more convenient and labor-saving.
In this embodiment, an electric device 60 is also included; the electric device 60 comprises a base 61, a motor 62 fixedly arranged on the base 61, a screw 63 fixedly connected with an output shaft of the motor 62, a nut in threaded connection with the screw 63, and a first connecting plate 64 fixedly connected with the nut; the screw rod 63 is vertical to the holding rod 44; one end of the base 61 close to the U-shaped frame 46 is provided with a second connecting plate 65; the second connecting plate 65 abuts against the side of the U-shaped frame 46 away from the vacuum tube 21, and the first connecting plate 64 abuts against the side of the grip lever 44 close to the vacuum tube 21. Specifically, when the manual work lacks or does not want the manual work to take out the negative pressure, can drive the automatic negative pressure that pumps of negative pressure device through electric actuator 60, wherein U type frame 46 and holding rod 44 are pressed from both sides between first connecting plate 64 and second connecting plate 65, rotate through motor 62, drive lead screw 63 and rotate, drive nut reciprocating motion on lead screw 63, drive first connecting plate 64 reciprocating motion, and then reach and push away holding rod 44 to U type frame 46, the rethread spring 45 pulls back holding rod 44, reach the purpose of automatic negative pressure that pumps.
In conclusion, the PICC catheter assisting device of the present embodiment rapidly and conveniently sucks negative pressure for the PICC catheter 70 through the negative pressure device, and controls the liquid medicine in the syringe 35 to automatically enter the PICC catheter 70 through the medicine supply device 30 at a certain negative pressure value, so as to reduce manual intervention. And set up filter equipment between first connecting tube 11 and negative pressure pipe, avoid liquid such as the blood water in PICC pipe 70 to enter into negative pressure device, cause negative pressure device pollution. And the whole device only needs to replace the filtering device, the three-way device 10 and the injector 35, so that the cost can be effectively reduced.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A PICC pipe booster unit which characterized in that: comprises a negative pressure device, a medicine supply device and a three-way device; the three-way device comprises a first connecting pipe, a second connecting pipe and a third connecting pipe which are mutually communicated and connected; the first connecting pipe is in sealed conduction connection with the air suction port of the negative pressure device; the second connecting pipe is communicated with the liquid outlet of the medicine supply device; the third connecting pipe is in sealed conduction connection with the PICC catheter; the medicine supply device is used for controlling liquid medicine to automatically enter the PICC catheter.
2. The PICC catheter assist device of claim 1, wherein: the medicine supply device comprises an injector and an automatic valve, and a nipple of the injector is communicated with the second connecting pipe;
the automatic valve comprises a liquid inlet pipe, a connecting rod fixed on the inner wall of the liquid inlet pipe and a sealing block fixedly connected with the connecting rod through a telescopic strip;
the liquid inlet pipe is communicated and coaxially connected between the nipple of the injector and the second connecting pipe; the inner diameter of the liquid inlet pipe is smaller than that of the second connecting pipe;
the sealing block is arranged at one end of the liquid inlet pipe close to the second connecting pipe and is in sealing sliding connection with the inner wall of the liquid inlet pipe.
3. The PICC catheter assist device of claims 1 or 2, wherein: a filtering device is connected between the first connecting pipe and the negative pressure device in a conduction manner, and the filtering device is detachably connected with the negative pressure device;
the filter device comprises a plurality of filters which are sequentially connected in a conducting manner, and water absorption cotton is arranged in each filter.
4. The PICC catheter assist device of claim 3, wherein: the negative pressure device comprises a vacuum tube and a first negative pressure cavity arranged in the vacuum tube; one end of the first negative pressure cavity is communicated with the first connecting pipe, and the other end of the first negative pressure cavity is communicated with a vent pipe;
a first one-way valve is arranged between the first negative pressure cavity and the first connecting pipe; a second one-way valve is arranged between the first negative pressure cavity and the vent pipe; the side wall of the vacuum tube is provided with a second negative pressure cavity communicated with the first negative pressure cavity; the second negative pressure cavity is communicated with an air exhaust device;
the first one-way valve is used for preventing gas from entering the first connecting pipe from the first negative pressure cavity; the second one-way valve is used for preventing gas from entering the first negative pressure cavity through the vent pipe.
5. The PICC catheter assist device of claim 4, wherein: the air extractor comprises a cylinder body fixedly arranged on the side wall of the vacuum tube and communicated with the second negative pressure cavity, a piston arranged in the cylinder body and a driving device used for driving the piston to reciprocate in the cylinder body.
6. The PICC catheter assist device of claim 5, wherein: the pair of second negative pressure cavities is arranged and distributed along the length direction of the vacuum tube; the air exhaust devices are provided with a pair; one of the air extracting devices is in conduction connection with one of the second negative pressure cavities, and the other of the air extracting devices is in conduction connection with the other of the second negative pressure cavities.
7. The PICC catheter assist device of claim 6, wherein: the driving device comprises a holding rod; one air exhaust device the piston fixedly connected with a push rod, a pair of air exhaust device the push rod keep away from the piston one end all be fixed in the holding rod, the holding rod with the push rod is perpendicular.
8. The PICC catheter assist device of claim 7, wherein: the vacuum tube is characterized by also comprising a U-shaped frame, wherein one end of the U-shaped frame is fixedly connected with the side wall of one end of the vacuum tube, and the other end of the U-shaped frame is fixedly connected with the side wall of the other end of the vacuum tube;
the holding rod is arranged between the cross rod of the U-shaped frame and the vacuum tube.
9. The PICC catheter assist device of claim 8, wherein: the guide device comprises a guide rod and a spring sleeved on the guide rod; the guide rod vertically penetrates through the holding rod and is in sliding connection with the holding rod; one end of the guide rod is fixedly connected with the side wall of the vacuum tube, and the other end of the guide rod is fixedly connected with the cross rod of the U-shaped frame;
the spring is arranged between the holding rod and the vacuum tube, one end of the spring is fixedly connected with the holding rod, and the other end of the spring is fixedly connected with the vacuum tube.
10. The PICC catheter assist device of claims 8 or 9, wherein: also comprises an electric device; the electric device comprises a base, a motor fixedly arranged on the base, a screw rod fixedly connected with an output shaft of the motor, a nut in threaded connection with the screw rod and a first connecting plate fixedly connected with the nut;
the screw rod is perpendicular to the holding rod; a second connecting plate is arranged at one end, close to the U-shaped frame, of the base; the second connecting plate is abutted against one side, far away from the vacuum tube, of the U-shaped frame, and the first connecting plate is abutted against one side, close to the vacuum tube, of the holding rod.
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| CN112451759B (en) | 2023-04-28 |
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