CN114699635B - Alveolar lavage device - Google Patents
Alveolar lavage device Download PDFInfo
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- CN114699635B CN114699635B CN202210392792.6A CN202210392792A CN114699635B CN 114699635 B CN114699635 B CN 114699635B CN 202210392792 A CN202210392792 A CN 202210392792A CN 114699635 B CN114699635 B CN 114699635B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 185
- 238000002347 injection Methods 0.000 claims abstract description 103
- 239000007924 injection Substances 0.000 claims abstract description 103
- 238000010521 absorption reaction Methods 0.000 claims abstract description 44
- 210000000621 bronchi Anatomy 0.000 claims abstract description 36
- 210000004072 lung Anatomy 0.000 claims abstract description 7
- 230000002596 correlated effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 34
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 18
- 238000004140 cleaning Methods 0.000 description 16
- 230000000875 corresponding effect Effects 0.000 description 14
- 239000012530 fluid Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 230000002262 irrigation Effects 0.000 description 9
- 238000003973 irrigation Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 206010024774 Localised infection Diseases 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 238000013276 bronchoscopy Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/267—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
- A61B1/2676—Bronchoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
- A61M3/0283—Cannula; Nozzles; Tips; their connection means with at least two inner passageways, a first one for irrigating and a second for evacuating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/60—General characteristics of the apparatus with identification means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1025—Respiratory system
- A61M2210/1039—Lungs
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Abstract
The invention relates to the technical field of medical instruments, and provides an alveolar lavage device which comprises a main body catheter used for passing through a bronchoscope and a connecting assembly used for communicating the outer end of the main body catheter with a water injection and absorption device; the inner end of the main body catheter forms a head used for extending out of the bronchoscope to extend into the lung bronchus; a water injection and absorption channel group for injecting or absorbing water is arranged in the main body conduit, the water injection and absorption channel group comprises at least one channel, each channel extends into the head, and the head is provided with an opening communicated with each channel; wherein, the length of the main body conduit is 80-150 cm, the area of the cross section of each flow passage in the injection and suction water flow passage group is 0.5-6.2 square mm, and the length of the main body conduit is positively correlated with the area of the cross section of the flow passage. The alveolar lavage device is convenient to operate; above-mentioned alveolar lavage device can select the main part pipe of suitable size when matching with the bronchoscope, and then can improve lavage efficiency.
Description
Technical Field
The present disclosure relates to the technical field of medical equipment, and in particular to an alveolar lavage device.
Background
Bronchoalveolar lavage is a non-invasive procedure performed through a bronchoscope and has been widely accepted in disease diagnosis. However, how to improve the efficiency and convenience of alveolar lavage during the use of the alveolar lavage device is one of the technical problems that those skilled in the art need to solve.
Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings in the prior art, the present application aims to provide an alveolar lavage device that is efficient and convenient to use when used for irrigating a sub-segmental bronchus corresponding to an alveolar region that needs to be lavaged. The specific scheme is as follows:
the invention provides an alveolar lavage device, which comprises a main body catheter for passing through a bronchoscope and a connecting assembly for communicating the outer end of the main body catheter with a water injection and absorption device; the inner end of the main body catheter forms a head used for extending out of a bronchoscope to extend into a lung bronchus; a water injection and suction flow channel group for injecting or sucking water is arranged in the main body conduit, the water injection and suction flow channel group comprises at least one flow channel, each flow channel extends into the head, and the head is provided with an opening communicated with each flow channel; the length of the main body conduit is 80-150 cm, the area of the cross section of each flow channel in the water injection and absorption flow channel group is 0.5-6.2 square millimeters, and the length of the main body conduit is positively correlated with the area of the cross section of each flow channel.
When the alveolar lavage device provided by the invention is used, the main body catheter passes through the bronchoscope, then the head at the inner end extends into the sub-segmental bronchus of a patient needing lavage, and the outer end of the main body catheter is connected to the water injection and absorption device through the connecting assembly; a doctor injects cleaning liquid into the corresponding bronchoalveolar through the water injection and absorption flow channel group in the main catheter, the cleaning liquid is sprayed out through the opening formed in the head of the main catheter to lavage the alveoli, and the doctor can also suck the irrigated cleaning liquid through the opening formed in the head and the water injection and absorption flow channel group, so that the lavage operation on the corresponding sub-segment bronchoalveolar is realized, and the operation is convenient; meanwhile, in the alveolar lavage device provided by the invention, the length of the main body catheter is 80-150 cm, the area of the cross section of each flow passage of the water injection flow passage group in the main body catheter is 0.5-6.2 square mm, and the size matching can reduce the pressure loss in each flow passage of the main body catheter in the use process of the alveolar lavage device, so that the water injection operation and the suction operation can be smoothly carried out. And the length of the main body duct is positively correlated with the area of the cross section of the flow passage, and the flow passage with smaller cross section area needs shorter length to obtain the required suction efficiency, therefore, the alveolar lavage device can select the main body duct with proper size when matched with a bronchoscope, and further can improve the lavage efficiency.
On the basis of the technical scheme, in a preferred implementation manner, the length of the main body conduit is 90-120 cm, and the area of the cross section of each flow passage in the water injection flow passage group in the main body conduit is 1.1-4.92 square millimeters.
More specifically, the cross section of the flow channel in the injection and suction water flow channel group in the main body conduit is circular, and the length of the main body conduit and the inner diameter of the flow channel satisfy the following conditions:
Y＝20X+90
wherein Y is the length of the host catheter in centimeters;
and X is the inner diameter of the flow channel and has the unit of millimeter.
On the basis of the above technical solution, in a preferred implementation manner, the head has an opening including:
a top opening disposed at a top end of the head; and/or (c) and/or,
and the side opening is arranged on the pipe wall of the head part.
Preferably, the tube wall of the head is provided with 1-5 of the side openings.
Further preferably, the side opening of the tube wall of the head is provided with 1-3.
Preferably, the head tube wall is provided with one of the side openings, and the area of the side opening is 0.5 to 4 square millimeters. More preferably, the area of the side opening is 0.5-2 square millimeters.
On the basis of the above technical solution, in a preferred implementation manner, a plurality of the side openings are arranged on a tube wall of the head, and the side openings are distributed around the circumference of the head and are distributed at a certain interval in the axial direction of the head. When each lateral opening is used for water injection, when each lateral opening is distributed in the above mode, the spray area of the head when the cleaning liquid is sprayed out can be increased, and the efficiency of the head for alveolar lavage of the corresponding bronchus can be further increased.
Preferably, the distance from each side opening to the top end of the head in the axial direction of the head is less than or equal to 4cm, more preferably less than or equal to 2cm, and most preferably less than or equal to 1cm.
Preferably, in the axial direction of the head, the side opening area closest to the head is not smaller than the remaining side openings.
On the basis of the above technical solution, in a preferred implementation manner, the head has an opening including a top opening disposed at a top end of the head, and a diameter of the top opening is 0.3-2mm, and more preferably 0.5-1.5mm.
On the basis of the technical scheme, in a preferred implementation manner, the injection and suction water flow channel group comprises at least one flow channel, the area of each flow channel in the injection and suction water flow channel group is greater than or equal to 0.5 square millimeter, and the inner diameter of the main body conduit is 0.8-2.8mm.
Preferably, the water injection and absorption flow channel group comprises a water injection flow channel and a water absorption flow channel, the top opening is communicated with the water injection flow channel and the water absorption flow channel, and the side opening is communicated with the water injection flow channel and/or the water absorption flow channel. Among the above-mentioned technical scheme, the water injection runner sets up with the runner that absorbs water alone, and the water injection runner can play the effect of tonifying qi at the in-process that carries out the suction through the runner that absorbs water, can also carry out the continuous operation of water injection limit suction under the settlement circumstances, and the water injection process is less with the influence each other between the suction process.
In a preferred structure, in the head of the main body conduit, along the axis direction of the head, the length of the water injection flow channel is greater than that of the water absorption flow channel, the end part of the water absorption flow channel is in an oblique opening shape, the end surface of the opening is in smooth transition with the pipe wall of the water injection flow channel, and the side wall of the water absorption flow channel is provided with the side opening. In the structure, one part of the head part is only provided with the water injection flow passage, and the radial size of the part of the head part can be smaller, so that the top of the head part forms a tip structure, the water injection flow passage can be more deeply inserted into the corresponding bronchus, and the lavage effect is further improved.
In another preferred structure, a water cavity is arranged in the head part of the main body conduit, the top opening is communicated with the water cavity, and the end part of the water injection flow channel and the end part of the water absorption flow channel are both communicated with the water cavity. In the above scheme, the water injection flow channel and the water absorption flow channel share one top opening, which is beneficial to simplifying the structure of the top end of the head and reducing the size of the top end of the head.
Preferably, the connecting assembly comprises a first interface, a second interface, a third interface, a fourth interface and a valve core, wherein the first interface is a water filling port, the second interface is a water suction port, the third interface is communicated with the water filling flow channel and the first interface, the fourth interface is communicated with the water suction flow channel and the second interface, and the valve core is used for controlling the connection and disconnection between the first interface and the third interface and between the second interface and the fourth interface when acting.
Of course, in a preferred embodiment, when the main catheter of the alveolar lavage device includes only one water flow passage, the connection assembly is a single-handle three-way valve.
Preferably, the head portion is provided with an identification mechanism for marking the opening position information.
Preferably, the end of the head is provided with a soft buffer head structure.
Preferably, the liquid collecting device comprises a liquid collecting bottle and a low negative pressure device, wherein the liquid collecting bottle is provided with a first connecting pipe and a second connecting pipe, the liquid collecting bottle is communicated with the connecting assembly through the first connecting pipe, and the liquid collecting bottle is communicated with the low negative pressure device through the second connecting pipe.
Preferably, the first connection pipe has a length of 3 to 20cm and an inner diameter of 1.5 to 3 mm.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic view of an alveolar lavage device according to an embodiment of the present application;
FIG. 2a is a schematic view of a use scenario of an alveolar lavage device provided in the present application;
FIG. 2b is a schematic view of the head of a main catheter extending into a bronchus of an alveolar lavage apparatus according to the present invention;
FIG. 3a is a state diagram of a bronchoscope only used for lavage;
FIG. 3b is a schematic view of the head of the main catheter being filled with water while performing an irrigation using the alveolar irrigation device provided in the embodiments of the present application;
FIG. 4 is a schematic view of the flow direction of the fluid during water injection and suction when the set of water injection and suction passages of the main catheter in the alveolar lavage device provided by the embodiment of the present application includes only one passage;
FIG. 5 is a schematic illustration of a positive correlation between the inner diameter and length of a main catheter in an alveolar lavage device provided by an embodiment of the present application;
FIG. 6a is a schematic view of a main catheter water injection channel set including a water injection channel and a water suction channel in an alveolar lavage apparatus according to an embodiment of the present application;
FIG. 6b is a cross-sectional view of the body catheter of the alveolar irrigation device of FIG. 6 a;
FIG. 7a is a schematic view of an alternate embodiment of a main catheter configuration including an irrigation channel and a suction channel;
FIG. 7b is a schematic view of the flow of fluid during flooding of the alveolar lavage device of the configuration shown in FIG. 7 a;
FIG. 7c is a schematic view of the flow of fluid during aspiration in the alveolar lavage device of the configuration shown in FIG. 7 a.
1, a body conduit; 11, a head portion; 111, an opening; 1111, a side opening; 1112. 11121, 11122, open at the top; 112, injecting and sucking water flow channel group; 1121, water absorption flow channel; 1122, a water injection flow channel; 12, connecting the components; 121, a water filling port; 122, a water suction port; 13, marking the structure; 14, separating ribs; 15, a soft buffer head structure; 2, a bronchoscope; 21, working cavity channel; 3, collecting liquid bottles; 31, a first connecting pipe; 32, a second connecting pipe; 4, a low negative pressure device.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As mentioned in the background art, the present application provides an alveolar lavage device that can perform precise lavage on corresponding alveoli by aiming at the problem that in the prior art, the alveolar precise lavage technique has not been developed correspondingly due to the lack of devices such as the alveolar lavage device.
Please refer to fig. 1 to 4, in which fig. 1 is a schematic structural diagram of an alveolar lavage device according to an embodiment of the present application; FIG. 2a is a schematic view of a use scenario of an alveolar lavage device provided in the present application; FIG. 2b is a schematic view of the head of a main catheter extending into the bronchus of an alveolar lavage apparatus according to the present invention; FIG. 3a is a state diagram of a bronchoscope alone during lavage; FIG. 3b is a schematic view of the head of the main catheter being filled with water while performing an irrigation using the alveolar irrigation device provided in the embodiments of the present application; fig. 4 is a schematic view showing the flow direction of fluid during water injection and suction when the main catheter of the alveolar lavage device provided by the embodiment of the present application includes only one flow channel.
The alveolar lavage device provided by the embodiment of the application comprises a main body catheter 1 and a connecting assembly 12, wherein:
a head 11 for extending into a lung bronchus is formed at the inner end of the main body catheter 1, a water injection and suction channel group 112 for injecting water or sucking water is arranged in the main body catheter 1, the water injection and suction channel group 112 comprises at least one channel, each channel of the water injection and suction channel group 112 extends into the head 11, and the head 11 is provided with an opening 111 communicated with each channel of the water injection and suction channel group 112; the main body duct 1 is used for passing through the working channel 21 of the bronchoscope 2, so that the head 1 extends into the bronchus of the lung, as shown in fig. 1, fig. 2a and fig. 4, wherein the length of the main body duct 1 is 80-150 cm, the area of the cross section of each flow channel in the injection and suction flow channel group 112 is 0.5-6.2 square mm, and the length of the main body duct 1 is positively correlated with the area of the cross section of the flow channel;
the connecting assembly 12 is connected with the outer end of the main body conduit 1 and is used for communicating the outer end of the main body conduit 1 with the water injection and absorption device.
As shown in fig. 2, in the alveolar lavage device provided in the embodiment of the present application, when in use, the main body tube 1 is extended into the lung of the patient through the working lumen 21 of the bronchoscope 2, and during a specific use, the working lumen 21 of the bronchoscope 2 is extended into the trachea of the lung, at this time, the head 11 provided at the inner end of the main body tube 1 is extended out of the end of the working lumen 21 in the bronchoscope 2 and is further extended into the bronchus to be lavaged, specifically, as shown in fig. 2a and 2b, the head 1 is extended into the corresponding bronchus, so that the openings 111 provided in the head 1 are all located in the bronchus to be lavaged and are extended into at least H1, the physician injects a cleaning solution into the corresponding sub-segment bronchial alveoli through the injection and suction flow channel group 112 provided in the main body tube 1, the cleaning solution is injected out through the openings 111 provided in the head 11 of the main body tube 1 to lavage the alveoli, as shown in fig. 3b, and the physician can also conveniently perform a bronchoalveolar lavage operation through the corresponding bronchoscopy operation by the opening 111 and the injection and the water channel group 112 provided in the head 1. Meanwhile, in the alveolar lavage device, the length of the main catheter 1 is 80-150 cm, and the cross-sectional area of each flow channel of the internal water injection flow channel group 112 in the main catheter 1 is 0.5-6.2 mm, and the size matching can reduce the pressure loss in each flow channel of the main catheter 1 during the use of the alveolar lavage device, so that the water injection operation and the suction operation can be smoothly performed. And the length of main body pipe 1 is positive correlation with the area of runner cross section, and the runner of less cross sectional area needs shorter length just can obtain required suction efficiency, consequently, above-mentioned alveolar lavage device can select the main body pipe 1 of suitable size when matching with the bronchoscope, and then can improve lavage efficiency.
On the basis of the above technical solution, in a preferred implementation manner, the length of the main body conduit 1 is 90-120 cm, and the area of each flow passage in the water absorption flow passage group 112 in the main body conduit 1 is 1.1-4.92 square millimeters.
More specifically, as shown in fig. 5, the cross section of the flow channel in the water feeding and sucking flow channel group 112 in the main body conduit 1 is circular, and the length of the main body conduit 1 and the inner diameter of the flow channel satisfy:
Y＝20X+90
wherein Y is the length of the host catheter in centimeters;
and X is the inner diameter of the flow channel and has the unit of millimeter.
The hatched portion in fig. 5 is the range of suitable lengths of the main body catheter 1 for which efficient perfusion can be performed, corresponding to the inner diameters of the different main body catheters 1. The lower limit of the length of the main catheter 1 is determined by the length of the bronchoscope used by the main catheter 1, generally, the total length of the main catheter 1 is preferably at least 5mm longer than that of the bronchoscope, and on the premise of matching with the length of the bronchoscope, the length of the main catheter 1 is as short as possible, so that the lower limit of 80cm of the length of the main catheter 1 shown in fig. 5 needs to be adjusted according to the actual length of the bronchoscope. The upper limit of the length of the main catheter 1 shown in fig. 5 is the maximum length of the catheter that can be smoothly perfused with a main catheter 1 of a certain diameter given by the present invention. Smooth perfusion means that the pressure is moderate when water is injected, liquid can be pumped out at a high speed in the main body conduit 1 and enters the liquid collecting bottle during suction, and no obvious liquid column is retained in the main body conduit 1.
Of course, as shown in fig. 2a, the alveolar lavage device can be used with the liquid collecting bottle 3 and the low negative pressure device 4 in a specific use process, specifically, the liquid collecting bottle 3 can be connected with the connecting assembly 12 through the first connecting tube 31 to communicate with the water injection and suction flow channel set 112 of the main catheter 1, and meanwhile, the liquid collecting bottle 3 is connected with the low negative pressure device 4 through the second connecting tube 32.
Preferably, the first connection pipe 31 is part of the present invention, and the first connection pipe 31 of the liquid collection bottle 3 connected to the main conduit 1 should also use a hose with a short length and a large inner diameter to reduce the pressure difference and facilitate the suction. Since the first connection tube 31 is outside the body, the restriction is small. In view of convenience in operation, the first connection pipe 31 has a length of 3 to 20cm and an inner diameter of 1.5 to 3 mm.
More specifically, the low negative pressure means 4 may be selected to satisfy a suction pressure range of 50 to 150 mmHg.
On the basis of the above technical solution, with continuing reference to fig. 1, fig. 2b and fig. 4, in a preferred implementation, the head 11 has an opening 111 including:
a top opening 1112 disposed at a top end of the head; and/or (c) and/or,
In different use environments, the top opening 1112 can be used for filling water and can also be used for sucking water; of course, the side opening can be used for filling water and sucking water.
Preferably, the wall of the head 11 is provided with 1-5 side openings 1111.
It is further preferred that the side opening 1111 of the tube wall of the head 11 is provided with 1-3.
In a preferred implementation, in the alveolar lavage device described above, the wall of the head 11 of the main catheter 1 can be provided with only one side opening 1111, and the area of the side opening 1111 can be 0.5 to 4 square millimeters. More preferably, the area of the side opening 1111 is 0.5 to 2 square millimeters. Specifically, reference may be made to fig. 6a to 7c, wherein fig. 6a is a schematic structural diagram illustrating a water injection channel set of a main catheter in an alveolar lavage device provided by an embodiment of the present application, including a water injection channel and a water suction channel; FIG. 6b is a cross-sectional view of the body catheter of the alveolar irrigation device of FIG. 6 a; FIG. 7a is a schematic view of an alternate embodiment of a main catheter configuration including an irrigation channel and a suction channel; FIG. 7b is a schematic view of the flow of fluid during flooding of the alveolar lavage device of the configuration shown in FIG. 7 a; FIG. 7c is a schematic view of the flow of fluid during aspiration in the alveolar lavage device of the configuration shown in FIG. 7 a.
In another preferred embodiment, the alveolar lavage device described above, the head 11 of the main body catheter 1 is provided with a plurality of side openings 1111 in the wall thereof, and the plurality of side openings 1111 are distributed around the circumference of the head 11 and are spaced apart from each other in the axial direction of the head 11, as shown in fig. 1 and 4. When the side openings 1111 are used for water injection, the side openings 1111 are distributed as described above, so that the spray area of the head 11 when spraying the cleaning liquid can be increased, and the efficiency of the head 11 in irrigating the pulmonary alveoli corresponding to the bronchi can be increased.
Preferably, as shown in FIG. 2b, the distance H2 of each side opening 1111 from the tip of the head 11 in the axial direction of the head 11 is 4cm or less, more preferably 2cm or less, and most preferably 1cm or less.
Preferably, in the axial direction of the head 11, the area of the side opening 1111 nearest to the tip of the head 11 is not smaller than the area of the remaining side openings 1111. This arrangement of the side opening 1111 ensures the uniformity of the water flow in the direction close to the top end of the head 11 during the water injection and the water suction.
Based on the above technical solution, in a preferred implementation, the head 11 has an opening including a top opening 1112 disposed at the top end of the head, and the diameter of the top opening 1112 is 0.3-2mm, and more preferably 0.5-1.5mm.
In the alveolar lavage device provided in each of the above embodiments, the water injection and absorption flow channel set 112 provided in the main catheter 1 includes at least one flow channel, and each flow channel has an area greater than or equal to 0.5 mm square, and the inner diameter of the main catheter is 0.8-2.8mm.
The water injection and absorption flow channel group can be arranged in various ways, as follows:
the first method is as follows:
with continued reference to fig. 4, the water injection and absorption flow channel set 112 includes only one flow channel.
In a specific use process, when water needs to be injected into the corresponding branch air pipe, the cleaning liquid is injected into the corresponding branch air pipe from the flow channel through the side opening 1111 and the top opening 1112 arranged on the head, and the specific liquid flow direction is shown by solid arrows in fig. 4; when water in the bronchus needs to be pumped out of the bronchus, the water in the bronchus flows into the flow channel from the bronchus through the side opening 1111 and the top opening 1112 arranged on the head 11, and the specific liquid flow direction is shown by a dotted arrow in fig. 4; thereby completing the lavage of the bronchus.
The second method comprises the following steps:
referring to fig. 6a to 7c, the water injection and suction channel set 112 in the main pipe 1 includes two channels.
In the technical scheme provided by the second mode:
in a first specific implementation:
the two flow channels of the water injection and absorption flow channel set 112 in the main pipeline 1 may be a water injection flow channel 1121 and a water absorption flow channel 1122, the top opening 1112 is communicated with the water injection flow channel 1121 and the water absorption flow channel 1122, and the side opening 1111 is communicated with the water injection flow channel 1121 and/or the water absorption flow channel 1122.
In the alveolar lavage device provided by the second embodiment, the water injection flow channel 1121 and the water absorption flow channel 1122 are separately provided, and the water injection flow channel 1121 can supplement air during the suction process through the water absorption flow channel 1122, and can also perform continuous operation of water injection and suction under a set condition, so that the mutual influence between the water injection process and the suction process is small.
In addition to the alveolar lavage device according to the second embodiment, as shown in fig. 6a, in a preferred configuration, the head 11 of the main catheter 1 has a water injection channel 1121 longer than the water suction channel 1122 in the axial direction of the head 11, the end of the water suction channel 1122 is formed in an oblique mouth shape, the end face of the opening smoothly transitions with the wall of the water injection channel 1121, and the side wall of the water suction channel 1122 is provided with a side opening 1111. In this structure, only a part of the head 11 is provided with the water injection flow channel 1121, and the radial dimension of the head 11 at this part can be made smaller, so that a tip structure is formed at the top of the head 11, which is beneficial to making the water injection flow channel 1121 penetrate into the corresponding bronchus more, and further improving the lavage effect. In a specific use process, water can be injected into the bronchus through the top opening 11121 at the top of the water injection flow channel 1121, and then the liquid in the bronchus is sucked into the water absorption flow channel 1122 through the top opening 11122 at the top of the water absorption flow channel 1122 and the side opening 1111 on the side wall, so that the lavage of the bronchus is completed.
Specifically, as shown in fig. 6b, the water absorbing flow passage 1122 may be crescent-shaped, and the water injecting flow passage 1121 is circular, and the two are separated by the spacer rib 14.
In addition to the alveolar lavage device provided in the second embodiment, as shown in fig. 7a to 7c, in another preferred structure, the main body tube 1 has a water chamber (not shown) in the head portion thereof, the top opening 1112 is communicated with the water chamber, and both the end of the water injection flow path 1121 and the end of the water absorption flow path 1122 are communicated with the water chamber. In the above-mentioned embodiment, the water injection flow passage 1121 and the water suction flow passage 1122 share the single top opening 1112, which is advantageous for simplifying the top end structure of the head 11 and can reduce the size of the top end of the head 11.
In a specific use process, when water needs to be injected into the bronchus, a part of the cleaning liquid in the water injection flow channel 1121 may enter the bronchus through the top opening 1112, a part of the cleaning liquid may enter the water absorption flow channel 1122 through the water cavity, and enter the bronchus through the side opening 1111 of the water absorption flow channel 1122, and a specific liquid flow direction is as shown in fig. 7 b.
When it is desired to draw liquid from within the bronchial tube, as shown in FIG. 7c, cleaning fluid within the bronchial tube can be drawn into the suction channel through the top opening 1112 and the side opening 1111 of the suction channel 1122.
In the specific use process of the alveolar lavage device shown in fig. 6a to 7c, when the cleaning fluid in the bronchus needs to be pumped, the water injection flow channel 1121 can be released, and air can be supplied into the bronchus through the water injection flow channel 1121, as shown by the dotted arrow shown in fig. 7c, so that the need of moving the main catheter during pumping can be reduced, and the pumping can be performed more smoothly.
On the basis of the alveolar lavage device provided by the second embodiment, preferably, the connection assembly 12 connected to the outer end of the main catheter 1 may include a first port, a second port, a third port, a fourth port and a valve core, wherein the first port is a water filling port 121, the second port is a water suction port 122, the third port is communicated with the water filling flow channel 1121 and the first port, the fourth port is communicated with the water suction flow channel 1122 and the second port, and the valve core is used for controlling the connection and disconnection between the first port and the third port, and between the second port and the fourth port when in operation.
In a second specific implementation:
the water injection and absorption flow passage set 112 in the main body pipeline 1 comprises a water injection and absorption flow passage for injecting and absorbing water and at least one air supplementing flow passage. When the cleaning fluid sucking device is used specifically, cleaning fluid can be injected into the bronchus through the water injection and absorption flow channel, the cleaning fluid in the bronchus is sucked away, meanwhile, when the cleaning fluid in the bronchus is sucked, air can be supplied into the bronchus through the air supply flow channel, the requirement for moving the main body catheter during suction can be reduced, and the suction is smoother.
The third method comprises the following steps:
the water injection and suction flow channel set 112 in the main body pipeline 1 includes a water injection flow channel 1121, a water suction flow channel 1122 and at least one air supply flow channel.
On the basis of the solutions provided by the above-mentioned embodiments, preferably, as shown in fig. 1, the head 11 of the main body catheter 1 is provided with an identification means 13 for marking the position information of the opening 111. Through identification mechanism 13, the user can be accurate obtain the head 11 and stretch into the bronchial depth information, improves the controllability of lavage degree of depth.
Preferably, as shown in fig. 6a to 7c, the end of the head 11 is provided with a soft cushioning head structure 15. The soft buffer head structure 15 can reduce the damage to the bronchus when the head extends into the bronchus.
The specific embodiment is as follows:
the first embodiment is as follows: as shown in FIGS. 1 and 4, the main catheter 1 of the alveolar lavage device is a single lumen catheter, i.e., the water feeding and sucking flow channel set 112 includes only one flow channel. The main body conduit 1 is made of nylon material. The diameter of the main body conduit 1 is 1.8mm, and the diameter of the flow passage is 1.5mm. The head 11 is provided with two side openings 1111 distributed at both sides of the flow passage, the two side openings 1111 are 10mm apart from the top end of the head 11, the length of the side openings 1111 along the axis of the head 11 is 1.5mm, the width along the circumference of the head 11 is 1mm, and the diameter of the top opening 1112 is 0.98mm. The embodiment is characterized in that the diameter of the flow passage is larger, and the water injection efficiency and the suction efficiency are higher. The opening area of the top opening 1112 is smaller than that of the side opening 1111, so that the occurrence of the phenomenon that sputum in the bronchus is sucked into the flow channel from the top opening by negative pressure to block the channel can be reduced.
In the second embodiment, as shown in fig. 7a to 7c, the main catheter 1 of the alveolar lavage device is a double lumen catheter, i.e., the water injection and suction channel set 112 of the main catheter 1 includes two channels. The main conduit 1 is made of polyether block polyamide. The diameter of the main body duct 1 is 2.4mm, the length of the side opening 1111 along the axis of the head 11 is 2mm, the width along the circumferential direction of the head is 1mm, and the distance from the top opening 1112 of the head 11 is 10mm; the diameter of top opening 1112 is 1.5mm. The two flow paths of this embodiment provide more options for operating the device: FIG. 7b shows that the water injection flow channel 1121 is opened for synchronous air supplement during suction, which can reduce the need to move the main catheter 1 during suction, so that the suction is smoother; water injection and suction may also be performed simultaneously.
In the third embodiment, as the combination of the first embodiment and the second embodiment, one flow passage of the double-cavity catheter can be made small and only used for the purpose of air supplement; the cross section space is reserved for the other flow passage to be filled with water and sucked to the maximum extent, so that the water filling efficiency and the sucking efficiency are improved.
In the fourth embodiment, as shown in fig. 6a and 6b, the diameter of the main body catheter 1 is 2.4mm, the injection and suction water channel set 112 of the main body catheter 1 comprises two channels, one channel has a crescent-shaped cross section, the other channel has a circular cross section, wherein the circular channel has a diameter of 1mm, and the crescent-shaped channel is tapered at a distance of 5mm from the top end of the head 11. The crescent-shaped flow channel has a side opening 1111 having a length of 1.5mm along the axis of the head 11 and a width of 1mm along the circumferential direction of the head. The main conduit 1 is made of polyether block polyamide. The top opening 11121 of the circular flow passage is used for water injection, the side opening 1111 and the top opening 11122 of the crescent flow passage are used for suction, and when the water injection and suction device is used, water injection and suction can be carried out simultaneously. Since the top opening 11121 of the circular flow channel is at the top of the head and the exiting water stream has some pressure, the water stream is not immediately sucked out. In the water injection and suction processes, the liquid level can be effectively controlled within a certain proper range by controlling the liquid injection speed and the suction pressure, so that the water injection and the suction are continuously carried out. This protocol may improve effectiveness for patients with localized infections with continuous irrigation.
Fifth, in the alveolar lavage device provided in this embodiment, the inner diameter of the main catheter 1 is 2.0mm, the outer diameter is 2.4mm, the length of the main catheter 1 is set to 120cm, and the material is transparent PEBAX; the length of the first connecting pipe 31 connected to the main body conduit 1 side of the liquid collecting bottle 3 is 15cm, the inner diameter is 3mm, and the material is transparent PVC. In this embodiment, the main catheter 1 has a larger inner diameter, and can be used in conjunction with a 2.8mm therapeutic bronchoscope for alveolar lavage.
Example six: in the alveolar lavage device provided in this embodiment, the main catheter 1 has an inner diameter of 1.4mm, an outer diameter of 1.8mm, a length of 98cm, and is made of transparent nylon material; the length of the first connecting pipe 31 of the liquid collecting bottle 3 connected to the main body guide pipe 1 side is 15cm, the inner diameter is 3mm, and the material is transparent PVC. In this embodiment, the main catheter 1 has a small inner diameter, and can be used in conjunction with a 2.0mm clamp-track examination bronchoscope for alveolar lavage.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. An alveolar lavage device is characterized by comprising a main body catheter for passing through a bronchoscope and a connecting assembly for communicating the outer end of the main body catheter with a water injection and absorption device; the inner end of the main body catheter forms a head used for extending out of a bronchoscope to extend into a lung bronchus; a water injection and suction flow channel group for injecting or sucking water is arranged in the main body conduit, the water injection and suction flow channel group comprises at least one flow channel, each flow channel extends into the head, and the head is provided with an opening communicated with each flow channel; wherein, the length of the main body conduit is 80-150 cm, the area of the cross section of each flow passage in the water injection and absorption flow passage group is 0.5-6.2 square mm, and the length of the main body conduit is positively correlated with the area of the cross section of the flow passage;
the head has an opening comprising: a top opening disposed at a top end of the head; and/or the side opening is arranged on the wall of the head pipe; the pipe wall of the head is provided with a plurality of side openings which are distributed around the circumference of the head and are distributed at certain intervals in the axial direction of the head;
the cross section of the flow channel in the injection and suction water flow channel group in the main body guide pipe is circular, and the length of the main body guide pipe and the inner diameter of the flow channel meet the following requirements:
Y＝20X+90
wherein Y is the length of the host catheter in centimeters;
and X is the inner diameter of the flow channel and has the unit of millimeter.
2. The alveolar lavage device according to claim 1, wherein the length of the main catheter is 90 to 120cm, and the cross-sectional area of each flow passage in the group of water absorption flow passages in the main catheter is 1.1 to 4.92 mm.
3. The alveolar lavage device according to claim 1, wherein the water injection and suction flow channel set comprises a water injection flow channel and a water suction flow channel, the top opening communicates with the water injection flow channel and the water suction flow channel, and the side opening communicates with the water injection flow channel and/or the water suction flow channel.
4. The alveolar lavage device of claim 3, wherein the body conduit is in the head;
the length of the water injection flow channel is greater than that of the water absorption flow channel along the axial direction of the head, the end part of the water absorption flow channel is in an inclined opening shape, the end surface of an opening is in smooth transition with the pipe wall of the water injection flow channel, and the side wall of the water absorption flow channel is provided with the side opening; alternatively, the first and second electrodes may be,
the head of the main body conduit is internally provided with a water cavity, the top opening is communicated with the water cavity, and the end part of the water injection flow passage and the end part of the water absorption flow passage are communicated with the water cavity.
5. The alveolar lavage device according to claim 1 or 2, wherein the connection assembly is a single-handle three-way valve.
6. The alveolar lavage device according to any one of claims 1 to 4, comprising a liquid trap bottle and a low negative pressure device, wherein the liquid trap bottle has a first connecting tube and a second connecting tube, the liquid trap bottle communicates with the connecting assembly through the first connecting tube, and the liquid trap bottle communicates with the low negative pressure device through the second connecting tube.
7. The alveolar lavage device according to claim 6, wherein the first connection tube has a length of 3-20 cm and an inner diameter of 1.5-3 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210392792.6A CN114699635B (en) | 2022-04-15 | 2022-04-15 | Alveolar lavage device |
| PCT/CN2023/097526 WO2023198226A1 (en) | 2022-04-15 | 2023-05-31 | Alveolar lavage apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210392792.6A CN114699635B (en) | 2022-04-15 | 2022-04-15 | Alveolar lavage device |
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| CN114699635A CN114699635A (en) | 2022-07-05 |
| CN114699635B true CN114699635B (en) | 2023-03-24 |
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| CN202210392792.6A Active CN114699635B (en) | 2022-04-15 | 2022-04-15 | Alveolar lavage device |
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| WO (1) | WO2023198226A1 (en) |
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| CN114699635B (en) * | 2022-04-15 | 2023-03-24 | 常州乐奥医疗科技股份有限公司 | Alveolar lavage device |
| CN117180592A (en) * | 2023-09-06 | 2023-12-08 | 常州乐奥医疗科技股份有限公司 | Novel lavage catheter |
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| CN215227421U (en) * | 2021-02-08 | 2021-12-21 | 上海海慧生物科技有限公司 | Fiberbronchoscope respiratory tract washing tube, fiberbronchoscope and matching device |
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| DE3608943C1 (en) * | 1986-03-18 | 1987-04-02 | Christoph Dr Schmidt | Tubular, flexible probe for insertion into the air ducts and bronchi |
| US7048680B2 (en) * | 2001-06-06 | 2006-05-23 | Orqis Medical Corporation | Multilumen catheter for minimizing limb ischemia |
| WO2009051969A1 (en) * | 2007-10-17 | 2009-04-23 | Spire Corporation | Catheters with enlarged arterial lumens |
| CN205084179U (en) * | 2015-10-22 | 2016-03-16 | 上海交通大学医学院附属仁济医院 | Bronchoscope lavage sacculus pipe |
| MX2018008901A (en) * | 2016-01-20 | 2018-09-21 | Bard Inc C R | Access port and catheter assembly including catheter distal portion stability features. |
| US10905815B2 (en) * | 2016-10-26 | 2021-02-02 | Carefusion 2200, Inc. | Multi-lumen indwelling catheter |
| CN107096085A (en) * | 2017-03-19 | 2017-08-29 | 陈菁 | A kind of bronchoalveolar lavage catheter |
| CN208838088U (en) * | 2018-06-04 | 2019-05-10 | 张建军 | Sustainable perfusion and the combined type Flexible ureteroscope sheath external member attracted |
| CN211751359U (en) * | 2020-01-16 | 2020-10-27 | 汉中市中心医院 | Double-cavity suction and flushing pipe |
| CN111135366A (en) * | 2020-02-10 | 2020-05-12 | 常州乐奥医疗科技股份有限公司 | Medical lavage tube and medical lavage system |
| CN215134571U (en) * | 2021-05-28 | 2021-12-14 | 航天中心医院 | Alveolar lavage device |
| CN113398359B (en) * | 2021-06-22 | 2023-04-07 | 上海理工大学 | Alveolar lavage system |
| CN113598946B (en) * | 2021-08-30 | 2022-07-15 | 宁波市第一医院 | Take visual puncture of super microchannel of negative pressure suction's percutaneous kidney and expand integrative external member |
| CN114699635B (en) * | 2022-04-15 | 2023-03-24 | 常州乐奥医疗科技股份有限公司 | Alveolar lavage device |
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- 2022-04-15 CN CN202210392792.6A patent/CN114699635B/en active Active
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| CN213048930U (en) * | 2020-03-04 | 2021-04-27 | 中国医学科学院北京协和医院 | Drainage tube |
| CN215227421U (en) * | 2021-02-08 | 2021-12-21 | 上海海慧生物科技有限公司 | Fiberbronchoscope respiratory tract washing tube, fiberbronchoscope and matching device |
| CN216148691U (en) * | 2021-06-29 | 2022-04-01 | 广东医科大学附属医院 | Continuous negative pressure suction device for esophagus occlusion |
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