CN110897687B - Pericardium puncture liquid pumping device for department of cardiology - Google Patents
Pericardium puncture liquid pumping device for department of cardiology Download PDFInfo
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- CN110897687B CN110897687B CN201911270857.4A CN201911270857A CN110897687B CN 110897687 B CN110897687 B CN 110897687B CN 201911270857 A CN201911270857 A CN 201911270857A CN 110897687 B CN110897687 B CN 110897687B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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- A61M1/0023—
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
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Abstract
A pericardium puncture liquid suction device for cardiology comprises a puncture needle, a positioning mechanism, a suction machine and a drug delivery device; the infusion needle comprises an inner needle body and an outer needle body sleeved on the periphery of the inner needle body, the inner diameter of the outer needle body is larger than the outer diameter of the inner needle body, the inner needle body is attached to the inner wall of the outer needle body, a fixing piece is fixedly arranged in the outer needle body at a position close to the tail end, the inner needle body penetrates through the fixing piece, and a guide tube and a pushing block are communicated with the rear part of the outer needle body; the positioning mechanism comprises a mounting sleeve, a sliding groove is formed in the mounting sleeve, the outer needle body is arranged in the sliding groove in a sliding manner, and scales are arranged on the outer wall of the sliding groove; the suction machine is communicated with the guide pipe; the drug delivery device is in communication with the inner needle via a drug input tube. The invention provides a pericardial puncture liquid suction device for cardiology, which can be positioned accurately, and can reduce the damage to patients by only puncturing once.
Description
Technical Field
The invention relates to the field of intracardiac branch of academic or vocational study treatment equipment, in particular to a pericardium puncture liquid pumping device for the intracardiac branch of academic or vocational study.
Background
The cardiology department, namely the cardiovascular department, is a clinical department set by the department of major department of hospitals in order to diagnose cardiovascular diseases, and the diseases treated by the department include angina pectoris, hypertension, sudden death, arrhythmia, heart failure, premature beat, arrhythmia, myocardial infarction, cardiomyopathy, myocarditis, acute myocardial infarction and other cardiovascular diseases.
Pericardial effusion is a more common clinical manifestation, one of the important signs of pericardial disease, and is found in exudative pericarditis and other non-inflammatory pericardial lesions, usually determined by physical examination and X-ray examination. When pericardial effusion lasts for more than several months, chronic pericardial effusion is formed.
In the treatment of cardiovascular diseases, the liquid-extracting device is an indispensable treatment device and plays an important role in extracting body fluid accumulated under the skin or in the cavity of a patient from the outside. In the liquid pumping device, a puncture needle is an important device reaching the affected part, most of the existing puncture needles adopt a simple single needle tube structure and are separated from an infusion needle for drug delivery, and two injuries are required to be caused to a patient. In addition, because the pericardial site is special, the minor deviation of the puncture depth can cause great harm to the patient, but the existing puncture needle is completely positioned by depending on the experience of doctors, and has great risk.
Besides the two defects, the currently used liquid suction device generally adopts a simple gravity drainage mode, the drainage tube is blocked frequently in the drainage process, and the liquid suction device is not easy to disassemble, clean and disinfect, so that great inconvenience is brought to medical staff and patients.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the pericardium puncture liquid drawing device for the cardiology department, which can accurately position and can reduce the damage to a patient only by puncturing once.
In order to achieve the above purpose, the invention adopts the following specific scheme: a pericardium puncture liquid suction device for cardiology comprises a puncture needle, a positioning mechanism, a suction machine and a drug delivery device; the infusion needle comprises an inner needle body and an outer needle body sleeved on the periphery of the inner needle body, the inner diameter of the outer needle body is larger than the outer diameter of the inner needle body, the inner needle body is attached to the inner wall of the outer needle body, a fixing piece is fixedly arranged in the outer needle body at a position close to the tail end, the inner needle body penetrates through the fixing piece, and a guide tube and a pushing block are communicated with the rear part of the outer needle body; the positioning mechanism comprises a mounting sleeve, a sliding groove is formed in the mounting sleeve, the outer needle body is arranged in the sliding groove in a sliding manner, and scales are arranged on the outer wall of the sliding groove; the suction machine is communicated with the guide pipe; the drug delivery device is in communication with the inner needle via a drug input tube.
As a preferred solution, a sealing element is arranged between the fixing element and the end of the outer needle body, and the inner needle body passes through the sealing element.
As a preferable scheme, the suction machine is communicated with the guide pipe through a drainage mechanism;
as a preferred scheme, drainage mechanism includes the connecting rod, and the main passageway that extends along length direction has been seted up at the middle part of connecting rod, and the one end intercommunication of main passageway has leading drainage tube, leading drainage tube with leading to the pipe and be linked together, the other one end intercommunication of main passageway has rearmounted drainage tube, rearmounted drainage tube with the aspirator is linked together, and the one end intercommunication that main passageway is close to leading drainage tube has the side channel, and the side channel link up the outer wall of connecting rod and incline to leading drainage tube, and the side channel has the pump through liquid output tube intercommunication, and the pump has the liquid storage pot through the honeycomb duct intercommunication.
As a preferred scheme, the connecting rod is connected with the front drainage tube, the rear drainage tube or the liquid output tube through a connector, the connector comprises a conical mounting seat fixedly connected with the connecting rod, a connecting channel is formed in the mounting seat and is communicated with the main channel or the side channel, a limiting ring is fixedly arranged in the connecting channel, and the front drainage tube, the rear drainage tube or the liquid output tube is propped against the limiting ring.
As a preferable scheme, the spacing ring is fixedly connected with tubular soft clamping piece, and soft clamping piece is towards the outside of connecting rod, leave between the outer wall of soft clamping piece with the inner wall of connecting channel and be used for holding leading drainage tube, rearmounted drainage tube or the clearance of liquid output tube, the inner wall of soft clamping piece is toper and tip towards the inboard of connecting rod.
As a preferable scheme, the outer wall of the mounting seat is wound with an adhesive tape, one end of the adhesive tape is fixedly connected with the mounting seat, and the other end of the adhesive tape is fixedly connected with a plastic sheet.
As a preferable scheme, a flow rate sensing assembly is arranged in the part of the main channel close to the rear drainage tube, the flow rate sensing assembly is connected with a controller, and the controller is in control connection with the pump;
as a preferred scheme, the flow rate sensing assembly comprises a through hole formed in the connecting rod, the through hole is perpendicular to the main channel, a base is arranged in the through hole, the base is rotationally connected with a movable plate, the movable plate is perpendicular to the main channel and is connected with the inner wall of the through hole through a soft sealing film, one end of the movable plate stretches into the main channel, the other end of the movable plate stretches out of the through hole, a button switch is electrically connected to the controller, the button switch is arranged on the outer side of the connecting rod, and the button switch is triggered or turned off in the moving process of the movable plate.
As a preferable scheme, the controller is connected with a soft connecting pipe, the connecting pipe is fixedly connected with a tubular plug, the button switch is fixedly arranged on the inner wall of the plug, a tubular fixing sleeve is fixedly arranged on the outer wall of the connecting rod, and the plug is correspondingly inserted into the fixing sleeve.
As a preferable scheme, a notch is formed in the base, a rotating shaft is arranged between two opposite side walls of the notch in a penetrating mode, and the movable plate is rotatably sleeved on the rotating shaft.
As a preferable scheme, the middle part of the rotating shaft is provided with a diameter reducing part, the movable plate comprises a sleeve which is interactively sleeved on the rotating shaft, the sleeve is fixedly connected with a driving plate and a driven plate, the driving plate stretches into the main channel, the driven plate stretches out of the through hole, and the width of the driving plate is larger than that of the driven plate.
The beneficial effects are that: the invention can accurately control the insertion position of the puncture needle, thereby protecting a patient and avoiding the damage to the patient caused by the position deviation of the puncture needle; the outer needle body 1 and the inner needle body 2 are tightly attached, and body tissues of a patient can be squeezed apart together in the process of insertion, so that blockage is avoided; the outer needle body 1 and the inner needle body 2 only need to be inserted once, so that the patient can be prevented from being injured for a plurality of times.
Drawings
FIG. 1 is a schematic view of the structure of a puncture needle;
FIG. 2 is a schematic view of the mounting sleeve and handle;
FIG. 3 is a schematic view of a drainage mechanism;
FIG. 4 is a schematic structural view of the connector;
FIG. 5 is a schematic illustration of the arrangement of the adhesive tape and plastic sheet;
FIG. 6 is an enlarged view of a portion of FIG. 3;
FIG. 7 is a schematic structural view of the base;
fig. 8 is a schematic structural view of the movable plate.
Reference numerals: the device comprises a 1-outer needle body, a 2-inner needle body, a 3-guiding tube, a 4-fixing piece, a 5-sealing piece, a 6-front drainage tube, a 7-medicament input tube, an 8-mounting sleeve, a 9-scale, a 10-handle, an 11-concave part, a 12-pushing block, a 13-mounting seat, a 14-connecting rod, a 15-side channel, a 16-liquid output tube, a 17-movable plate, a 18-through hole, a 19-rear drainage tube, a 20-fixing sleeve, a 21-plug, a 22-button switch, a 23-connecting tube, a 24-pump, a 25-guiding tube, a 26-liquid storage pot, a 27-limiting ring, a 28-soft clamping piece, a 29-adhesive tape, a 30-plastic sheet, a 31-soft sealing membrane, a 32-base, a 33-rotating shaft, a 34-notch, a 35-reducing part, a 36-driving sheet, a 37-sleeve and a 38-driven sheet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 8, a pericardium puncture and liquid suction device for cardiology comprises a puncture needle, a positioning mechanism, a suction machine and a drug delivery device.
The infusion needle comprises an inner needle body 2 and an outer needle body 1 sleeved on the periphery side of the inner needle body 2, the inner diameter of the outer needle body 1 is larger than the outer diameter of the inner needle body 2, the inner needle body 2 is attached to the inner wall of the outer needle body 1, a fixing piece 4 is fixedly arranged at a position, close to the tail end, in the outer needle body 1, the inner needle body 2 penetrates through the fixing piece 4, and a guide tube 3 and a pushing block 12 are communicated with the rear portion of the outer needle body 1.
The positioning mechanism comprises a mounting sleeve 8, a sliding groove is formed in the mounting sleeve 8, the outer needle body 1 is arranged in the sliding groove in a sliding manner, and scales 9 are arranged on the outer wall of the sliding groove.
The suction machine is communicated with the guide tube 3.
The drug delivery device communicates with the inner needle 2 via a drug inlet tube 7.
When the puncture needle is used, firstly, the puncture needle is inserted into a target position in pericardial effusion, the outer needle body 1 is driven to move by holding the mounting sleeve 8 by hand and then moving the pushing block 12 by using the thumb in the process of insertion, and because the outer needle body 1 and the inner needle body 2 are fixedly connected through the fixing piece 4, the outer needle body 1 can drive the inner needle body 2 to synchronously move, and the moving distance of the pushing block 12 can be determined by means of the scale 9, so that the moving distance of the puncture needle is determined, the position of the puncture needle is accurately controlled, and damage to a patient is avoided; then, the medicines are sequentially input to a target position through the medicine input tube 7 and the inner needle body 2 by utilizing the medicine conveying device, and the medicines can be flexibly selected according to actual requirements, such as local anesthetic, the selection of the medicines does not affect the invention, and the medicine conveying device is closed after the medicine conveying is closed so as to seal the medicine input tube 7; after that, the liquid product is sucked out from the target position by the suction machine, and flows into the suction machine through the outer needle 1 and the guide tube 3 in this order, and since the inner needle 2 is present, a part of the liquid product enters the inner needle 2, but since the medicine input tube 7 is already closed, the liquid product is not affected, and the part of the liquid product may be retained in the inner needle 2.
By adopting the invention, the insertion position of the puncture needle can be accurately controlled, so that a patient is protected, and the damage to the patient caused by the position deviation of the puncture needle is avoided; the outer needle body 1 and the inner needle body 2 are tightly attached, and body tissues of a patient can be squeezed apart together in the process of insertion, so that blockage is avoided; the outer needle body 1 and the inner needle body 2 only need to be inserted once, so that the patient can be prevented from being injured for a plurality of times.
It should be noted that, the tip of the inner needle 2 cannot protrude from the outer needle 1, and the aspirator is a device commonly used in the art, and will not be described here.
Further, a sealing element 5 is arranged between the fixing element 4 and the tail end of the outer needle body 1, and the inner needle body 2 passes through the sealing element 5.
The suction machine is communicated with the guide tube 3 through a drainage mechanism. The sealing member 5 is used for further improving the sealing performance between the inner needle body 2 and the outer needle body 1 and avoiding effusion from leaking out of a gap between the inner needle body 2 and the outer needle body 1.
Further, in order to facilitate holding the mounting sleeve 8, the mounting sleeve 8 is also fixedly connected with a handle 10, and a plurality of concave portions 11 for accommodating fingers are arranged on the handle 10. When the hand grip is used, the hand grip 10 is held by the palm, the thumb is abutted against the pushing block 12, and the rest fingers are put into the concave part 11, so that the hand grip is convenient and comfortable.
Further, drainage mechanism includes connecting rod 14, the main channel that extends along length direction has been seted up at the middle part of connecting rod 14, the one end intercommunication of main channel has leading drainage tube 6, leading drainage tube 6 is linked together with leading pipe 3, the other end intercommunication of main channel has rearmounted drainage tube 19, rearmounted drainage tube 19 is linked together with the suction machine, the one end intercommunication that the main channel is close to leading drainage tube 6 has side channel 15, side channel 15 link up the outer wall of connecting rod 14 and slope of leading drainage tube 6, side channel 15 has pump 24 through liquid output tube 16 intercommunication, pump 24 has reservoir 26 through honeycomb duct 25 intercommunication.
In use, the drainage mechanism secures the connecting rod 14 to the patient's body surface, such as by medical adhesive tape, and then connects the post-drainage tube 19 to the aspirator, which is used to withdraw the fluid. After the effusion flows out of the patient body, the effusion flows through the front drainage tube 6, the main channel and the rear drainage tube 19 in sequence, and in the flowing process, because a lot of impurities exist in the effusion, the effusion can possibly cause blockage, at this time, the liquid in the liquid storage tank 26 is conveyed into the side channel 15 through the drainage tube 25 and the liquid output tube 16 by the pump 24, because the side channel 15 is obliquely arranged, and the inflow end of the side channel 15 is close to the front drainage tube 6, the outflow end of the side channel 15 is close to the rear drainage tube 19, the liquid flowing into the side channel 15 can flow to the rear drainage tube 19 after entering into the main channel, and the part of the liquid can have higher pressure by virtue of the output pressure of the pump 24, so that the blocked impurities are flushed out, and the normal flowing of the effusion is ensured. In addition, since the pre-drainage tube 6 cannot be flushed by liquid, the pre-drainage tube 6 needs to be made as short as possible, so that even if the pre-drainage tube 6 cannot be flushed, impurities in the pre-drainage tube 6 can be extracted by utilizing the Bernoulli principle when the flow in the main channel is accelerated.
Through drainage mechanism, can guarantee the unobstructed of hydrops drainage process, avoid drainage channel to block up, guarantee the treatment. It should be noted that, the matched aspirator is a conventional device in the field, so the structure and the working principle thereof are not repeated, the liquid in the liquid storage tank 26 can be purified water, and the cost can be reduced by using purified water because the aspirator only has the purpose of flushing the main channel and the rear drainage tube 1 without adding medicines.
Further, the connecting rod 14 is connected with the front drainage tube 6, the rear drainage tube 19 or the liquid output tube 16 through a connector, the connector comprises a conical mounting seat 13 fixedly connected with the connecting rod 14, a connecting channel is formed in the mounting seat 13 and is communicated with the main channel or the side channel 15, a limiting ring 27 is fixedly arranged in the connecting channel, and the front drainage tube 6, the rear drainage tube 19 or the liquid output tube 16 is propped against the limiting ring 27. The front drainage tube 6, the rear drainage tube 19 or the liquid output tube 16 is inserted into the connecting channel and then abuts against the limiting ring 27 to complete positioning, so that the phenomenon that the liquid output tube is easy to fall off due to too shallow insertion and extension is avoided.
Further, the limiting ring 27 is fixedly connected with a tubular soft clamping piece 28, the soft clamping piece 28 faces the outer side of the connecting rod 14, a gap for accommodating the front drainage tube 6, the rear drainage tube 19 or the liquid output tube 16 is reserved between the outer wall of the soft clamping piece 28 and the inner wall of the connecting channel, and the inner wall of the soft clamping piece 28 is conical and the small end faces the inner side of the connecting rod 14. In both the pre-drain tube 6 and the liquid delivery tube 16, the flow direction of the internal volume liquid and the liquid is from the outside to the inside of the connecting rod 14, so that in both connectors corresponding to the pre-drain tube 6 and the liquid delivery tube 16, the inner wall of the soft clamp 28 is impacted, and the impact force generates a pressing force on the tapered inner wall toward the inner wall of the connecting channel, thereby pushing the soft clamp 28 to move toward the inner wall of the connecting channel, and further clamping the pre-drain tube 6 or the liquid delivery tube 16 by the soft clamp 28, so as to avoid dropping of the connecting rod 14.
Further, an adhesive tape 29 is wound on the outer wall of the mounting seat 13, one end of the adhesive tape 29 is fixedly connected with the mounting seat 13, and the other end of the adhesive tape 29 is fixedly connected with a plastic sheet 30. The soft grip 28 can fix the pre-drain tube 6 and the liquid outlet tube 16, but for the post-drain tube 19, since the direction of the internal liquid and the liquid mixture flowing therein is from the inside to the outside of the connecting rod 14, it cannot directly strike the inner wall of the soft grip 28 corresponding to the post-drain tube 19, so that the stability of the post-drain tube 19 cannot be ensured, at this time, the adhesive tape 29 can be unwound and then wound around the post-drain tube 19, the post-drain tube 19 is fixed, and the plastic sheet 30 is used to conveniently unwind the adhesive tape 29. The adhesive strips 29 on the two connectors corresponding to the pre-drain tube 6 and the liquid outlet tube 16 can be used to secure the connecting rod 14 to the body surface of the patient. The connector can sufficiently fix the connecting rod 14 by combining the soft clamping piece 28 and the adhesive tape 29, so that the invention can be stably used.
Further, a flow rate sensing assembly is arranged in a part of the main channel close to the rear drainage tube 19, and is connected with a controller which is in control connection with the pump 24. The flow rate sensing assembly comprises a through hole 18 formed in a connecting rod 14, the through hole 18 is perpendicular to a main channel, a base 32 is arranged in the through hole 18, the base 32 is rotationally connected with a movable plate 17, the movable plate 17 is perpendicular to the main channel and is connected with the inner wall of the through hole 18 through a soft sealing film 31, one end of the movable plate 17 stretches into the main channel, the other end of the movable plate 17 stretches out of the through hole 18, a controller is electrically connected with a button switch 22, the button switch 22 is arranged on the outer side of the connecting rod 14, and the button switch 22 is triggered or turned off in the moving process of the movable plate 17.
Although the fluid is ensured to be continuously conveyed into the main channel, the volume of the output mixed liquid is increased rapidly, so that the container for containing the liquid in the body needs to be replaced frequently, other treatment links are disturbed, flushing is unnecessary when the main channel is not blocked, waste is caused, a flow rate sensing assembly is required to be arranged, the flow rate is used as a basis for judging whether the main channel is blocked, and when the flow rate is too low, the pump 24 is started to flush, so that the consumption of the liquid is reduced, and the replacement frequency of the container is reduced.
After the drainage device is installed and started, the fluid in the body flows through the front drainage tube 6, the main channel and the rear drainage tube 19 in sequence, the movable plate 17 is pushed to move in the main channel, the movable plate 17 triggers the button switch 22 in the moving process, the controller controls the pump 24 to enter a preparation state after receiving a signal triggered by the button switch 22, when the fluid in the body is blocked, the flow rate is reduced, the movable plate 17 cannot keep the position, so that the fluid leaves the button switch 22, the signal of the button switch 22 is interrupted, then the controller controls the pump 24 to operate, the fluid in the fluid storage tank 26 is conveyed into the main channel to be flushed, the flow rate of the fluid in the body after the blockage is eliminated is accelerated, the movable plate 17 triggers the button switch 22 again, and the controller controls the pump 24 to stop operating. The soft sealing membrane 31 is used for ensuring the sealing performance of the through hole 18 and preventing the liquid from flowing out of the through hole 18, and is used for deforming the movable plate 17 with a higher liquid flow rate when the button switch 22 is triggered, and recovering the liquid when the liquid flow rate is reduced due to blockage, so that the movable plate 17 is driven to be separated from the button switch 22. It should be noted that, after the liquid is delivered into the main channel by the pump 24, the flow rate is fast, so that the movable plate 17 triggers the button switch 22, and the pump 24 is stopped at this time, so that the liquid delivered by the pump 24 once is limited in practice, and when the blockage cannot be solved by one flushing, the movable plate 17 is separated from the button switch 22 again, so that the pump 24 is started again, that is, the flushing process is repeated for a plurality of times, so that the consumption of the liquid is further controlled, the consumption of the liquid is reduced, and the replacement frequency of the container is reduced.
Further, the controller is connected with a soft connecting pipe 13, the connecting pipe 13 is fixedly connected with a tubular plug 21, a button switch 22 is fixedly arranged on the inner wall of the plug 21, a tubular fixing sleeve 20 is fixedly arranged on the outer wall of the connecting rod 14, and the plug 21 is correspondingly inserted into the fixing sleeve 20. The connecting pipe 13 is used for accommodating wires for connecting the push button switch 22 and the controller, and the push button switch 22 can be quickly and accurately installed in place through the cooperation of the plug 21 and the fixing sleeve 20, in order to further determine the position of the push button switch 22, in other embodiments of the present invention, a positioning protrusion may be further arranged on the outer wall of the plug 21, and a positioning groove corresponding to the positioning protrusion may be arranged on the inner wall of the fixing sleeve 20.
Further, a notch 34 is formed on the base 32, a rotating shaft 33 is arranged between two opposite side walls of the notch 34 in a penetrating manner, and the movable plate 17 is rotatably sleeved on the rotating shaft 33. The position of the movable plate 17 is limited by the rotating shaft 33, so that the movable plate 17 can be always perpendicular to the main channel, and the due effect is achieved.
Further, the middle part of the rotating shaft 33 is provided with a diameter-reducing part 35, the movable plate 17 comprises a sleeve 37 which is interactively sleeved on the rotating shaft 33, the sleeve 37 is fixedly connected with a driving plate 36 and a driven plate 38, the driving plate 36 stretches into the main channel, the driven plate 38 stretches out of the through hole 18, and the width of the driving plate 36 is larger than that of the driven plate 38. The larger area of the driving plate 36 than the driven plate 38 ensures that the driving plate 36 is better able to sense the flow rate of the fluid in the volume and that the driven plate 38 is flexible enough.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. Pericardium puncture drainage device for intracardiac branch of academic or vocational study, its characterized in that: comprises a puncture needle, a positioning mechanism, an aspirator and a drug delivery device;
the puncture needle comprises an inner needle body (2) and an outer needle body (1) sleeved on the periphery of the inner needle body (2), wherein the inner diameter of the outer needle body (1) is larger than the outer diameter of the inner needle body (2), the inner needle body (2) is attached to the inner wall of the outer needle body (1), a fixing piece (4) is fixedly arranged at a position, close to the tail end, in the outer needle body (1), the inner needle body (2) penetrates through the fixing piece (4), and the rear part of the outer needle body (1) is communicated with a guide tube (3) and a pushing block (12);
the positioning mechanism comprises a mounting sleeve (8), a chute is formed in the mounting sleeve (8), the outer needle body (1) is arranged in the chute in a sliding manner, and scales (9) are arranged on the outer wall of the chute;
the suction machine is communicated with the guide pipe (3);
the drug delivery device is communicated with the inner needle body (2) through a drug input tube (7);
the suction machine is communicated with the guide pipe (3) through a drainage mechanism;
the drainage mechanism comprises a connecting rod (14), a main channel extending along the length direction is formed in the middle of the connecting rod (14), a front drainage tube (6) is communicated with one end of the main channel, the front drainage tube (6) is communicated with the guiding tube (3), a rear drainage tube (19) is communicated with the other end of the main channel, the rear drainage tube (19) is communicated with the suction machine, a side channel (15) is communicated with one end, close to the front drainage tube (6), of the main channel, the side channel (15) penetrates through the outer wall of the connecting rod (14) and inclines towards the front drainage tube (6), a pump (24) is communicated with the side channel (15) through a liquid output tube (16), and a liquid storage tank (26) is communicated with the pump (24) through a guide tube (25);
the connecting rod (14) is connected with the front drainage tube (6), the rear drainage tube (19) or the liquid output tube (16) through a connector, the connector comprises a conical mounting seat (13) fixedly connected with the connecting rod (14), a connecting channel is formed in the mounting seat (13), the connecting channel is communicated with the main channel or the side channel (15), a limiting ring (27) is fixedly arranged in the connecting channel, and the front drainage tube (6), the rear drainage tube (19) or the liquid output tube (16) is propped against the limiting ring (27);
the limiting ring (27) is fixedly connected with a tubular soft clamping piece (28), the soft clamping piece (28) faces the outer side of the connecting rod (14), a gap for accommodating the front drainage tube (6), the rear drainage tube (19) or the liquid output tube (16) is reserved between the outer wall of the soft clamping piece (28) and the inner wall of the connecting channel, and the inner wall of the soft clamping piece (28) is conical and the small end faces the inner side of the connecting rod (14);
a flow rate sensing assembly is arranged in the part of the main channel, which is close to the rear drainage tube (19), and is connected with a controller which is in control connection with the pump (24);
the flow rate sensing assembly comprises a through hole (18) formed in the connecting rod (14), the through hole (18) is perpendicular to the main channel, a base (32) is arranged in the through hole (18), the base (32) is rotationally connected with a movable plate (17), the movable plate (17) is perpendicular to the main channel and is connected with the inner wall of the through hole (18) through a soft sealing film (31), one end of the movable plate (17) stretches into the main channel, the other end of the movable plate (17) stretches out from the through hole (18), the controller is electrically connected with a button switch (22), the button switch (22) is arranged on the outer side of the connecting rod (14), and the button switch (22) is triggered or turned off in the moving process of the movable plate (17).
2. The pericardial puncture and drainage device for cardiology department as set forth in claim 1, wherein: a sealing element (5) is arranged between the fixing element (4) and the tail end of the outer needle body (1), and the inner needle body (2) passes through the sealing element (5).
3. The pericardial puncture and drainage device for cardiology department as set forth in claim 1, wherein: an adhesive tape (29) is wound on the outer wall of the mounting seat (13), one end of the adhesive tape (29) is fixedly connected with the mounting seat (13), and the other end of the adhesive tape (29) is fixedly connected with a plastic sheet (30).
4. The pericardial puncture and drainage device for cardiology department as set forth in claim 1, wherein: the controller is connected with a soft connecting pipe, the connecting pipe is fixedly connected with a tubular plug (21), the button switch (22) is fixedly arranged on the inner wall of the plug (21), a tubular fixing sleeve (20) is fixedly arranged on the outer wall of the connecting rod (14), and the plug (21) is correspondingly inserted into the fixing sleeve (20).
5. The pericardial puncture and drainage device for cardiology department as set forth in claim 1, wherein: a gap (34) is formed in the base (32), a rotating shaft (33) is arranged between two opposite side walls of the gap (34) in a penetrating mode, and the movable plate (17) is rotatably sleeved on the rotating shaft (33).
6. The pericardial puncture and drainage device for cardiology department as set forth in claim 5, wherein: the middle part of pivot (33) is provided with reducing portion (35), fly leaf (17) are including interactive cover to be established sleeve pipe (37) on pivot (33), sleeve pipe (37) fixedly connected with initiative piece (36) and driven piece (38), initiative piece (36) stretch into in the main passageway, driven piece (38) follow through-hole (18) stretches out, and the width of initiative piece (36) is greater than the width of driven piece (38).
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| CN201911270857.4A CN110897687B (en) | 2019-12-12 | 2019-12-12 | Pericardium puncture liquid pumping device for department of cardiology |
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| CN201911270857.4A CN110897687B (en) | 2019-12-12 | 2019-12-12 | Pericardium puncture liquid pumping device for department of cardiology |
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| CN110897687A CN110897687A (en) | 2020-03-24 |
| CN110897687B true CN110897687B (en) | 2023-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114533214A (en) * | 2021-12-23 | 2022-05-27 | 中国人民解放军第三〇五医院 | Be used for intracardiac branch of academic or vocational study puncture positioner |
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| CN110897687A (en) | 2020-03-24 |
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