CN111569234B - External sputum suction tube assembly structure - Google Patents
External sputum suction tube assembly structure Download PDFInfo
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- CN111569234B CN111569234B CN202010417199.3A CN202010417199A CN111569234B CN 111569234 B CN111569234 B CN 111569234B CN 202010417199 A CN202010417199 A CN 202010417199A CN 111569234 B CN111569234 B CN 111569234B
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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
- A61M25/10—Balloon catheters
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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
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1061—Balloon catheters with special features or adapted for special applications having separate inflations tubes, e.g. coaxial tubes or tubes otherwise arranged apart from the catheter tube
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Abstract
The invention relates to the technical field of medical instruments and discloses an external sputum aspirator assembly structure, which comprises a catheter, a main cuff and a main inflation tube, wherein the front end of the catheter penetrates through the main cuff to be fixedly connected with the main cuff, the rear end of the catheter is provided with a catheter connector, the front end of the main inflation tube is connected with the main cuff, the rear end of the main inflation tube is provided with the main inflation connector, the outer side of the catheter is provided with a sputum aspirator, the front end of the sputum aspirator is connected with the catheter through a snap ring, the outer side of the rear end of the catheter is provided with a denture base, the rear ends of the catheter, the main inflation tube and the sputum aspirator tube penetrate through the denture base, and the rear end of the sputum aspirator tube is provided with a sputum aspirator connector; the middle part of the conduit is provided with an auxiliary cuff, the outer side of the conduit is provided with an auxiliary inflation tube connected with the auxiliary cuff, and the rear end of the auxiliary inflation tube is provided with an auxiliary inflation tube joint. The invention has the advantages of convenient use, short sputum suction time, high sputum suction efficiency and more comfortable patient in the sputum suction process.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an external sputum aspirator tube assembly structure.
Background
Sputum aspiration refers to a method of sucking the secretions of the respiratory tract through the oral cavity, nasal cavity and airway to keep the respiratory tract breathing smoothly and prevent complications such as aspiration pneumonia, atelectasis and asphyxia. The existing sputum suction methods are the modes of inserting a sputum suction pipe into a tracheal catheter, and are mainly divided into open type sputum suction and closed type sputum suction, wherein the closed type sputum suction does not need to interrupt ventilation and oxygen supply because a film is arranged outside the sputum suction pipe, and compared with the open type sputum suction, the sputum suction method is simpler and more convenient to operate and is more friendly to patients. However, no matter which sputum suction mode, the sputum suction pipe occupies the airway space about 1/4 in the tracheal catheter, the existing intraductal sputum suction can only suck sputum from the head outlet of the tracheal catheter, the main sputum sucked is the sputum gushed in the lung and the bronchus at the lower part of the catheter, and the sputum on the upper part sealed by the catheter airbag can not be effectively processed, so that the position of the head of the catheter needs to be repeatedly moved to change the position of the sputum suction, the sputum suction operation time is long, great discomfort is brought to patients, and the sputum suction efficiency in the respiratory tract is low.
Disclosure of Invention
The invention provides an external sputum aspirator tube component structure which is convenient to use, short in sputum aspirating time, high in sputum aspirating efficiency and more comfortable for patients in the sputum aspirating process, and aims to solve the problems that the sputum aspirator tube in the prior art is low in sputum aspirating efficiency, long in sputum aspirating time and strong in discomfort of patients in the sputum aspirating process.
In order to achieve the purpose, the invention adopts the following technical scheme:
an external sputum suction tube assembly structure comprises a guide tube, a main cuff and a main inflation tube, wherein the front end of the guide tube penetrates through the main cuff to be fixedly connected with the main cuff, a guide tube joint is arranged at the rear end of the guide tube, the front end of the main inflation tube is connected with the main cuff, a main inflation joint is arranged at the rear end of the main inflation tube, a sputum suction tube is arranged on the outer side of the guide tube, the front end of the sputum suction tube is connected with the guide tube through a clamping ring, a dental support is arranged on the outer side of the rear end of the guide tube, the rear ends of the guide tube, the main inflation tube and the sputum suction tube penetrate through the dental support, and a sputum suction tube joint is arranged at the rear end of the sputum suction tube; the middle part of the catheter is provided with an auxiliary cuff, the outer side of the catheter is provided with an auxiliary inflation tube connected with the auxiliary cuff, and the rear end of the auxiliary inflation tube is provided with an auxiliary inflation tube joint. When the sputum suction catheter is used, the catheter and the main cuff extend into the respiratory tract of a patient, the main cuff is inflated through the main inflation tube, the main cuff is inflated and expanded, the outer wall of the main cuff is in contact support with the inner wall of the respiratory tract, the auxiliary cuff is inflated through the auxiliary inflation tube, the auxiliary cuff is inflated and supported with the respiratory tract, a relatively closed sputum suction space is formed between the main cuff and the auxiliary cuff, and the catheter can keep the normal respiration and ventilation of the patient; sputum in the respiratory tract is accumulated at a position between the main sac sleeve and the auxiliary sac sleeve after being secreted, then a sputum suction pipe joint at the outer end of a sputum suction pipe is connected with an external sputum suction apparatus to suck out the sputum in the respiratory tract, the sputum suction pipe is arranged on the outer side of the catheter, the internal space of the catheter cannot be occupied, the sputum is directly sucked out through the sputum suction pipe, and the sputum cannot enter the catheter; the sputum suction tube assembly is convenient to use, short in sputum suction time, high in sputum suction efficiency and more comfortable for patients in the sputum suction process.
Preferably, a middle cuff is arranged between the main cuff and the auxiliary cuff on the outer side of the guide tube, a middle inflation tube is arranged on the outer side of the guide tube, the front end of the middle inflation tube is connected with the middle cuff, and a middle inflation joint is arranged at the rear end of the middle inflation tube; the front end of the sputum suction tube sequentially passes through the auxiliary cuff and the middle cuff and then is connected with the side surface of the catheter at the rear end of the main cuff. According to the actual demand, the middle cuff is selectively inflated through the middle inflation connector, the area between the main cuff and the auxiliary cuff is divided into two sputum suction areas after the middle cuff is inflated and expanded, the sputum suction pipe is more thorough in sputum suction, and more sputum can be sucked.
Preferably, the whole main cuff is cylindrical, a connecting sleeve is arranged at the center of the main cuff, the guide pipe penetrates through the connecting sleeve and is fixedly connected with the connecting sleeve, a Murphy hole is formed in the front end of the guide pipe, and scales are arranged on the side wall of the guide pipe. The scale can indicate the degree of depth of stretching into in the respiratory track, can wholly the fore-and-aft movement in order to absorb the sputum of different positions in the respiratory track according to the demand.
Preferably, the front end of the main cuff is convex outwards to form an ellipsoid, and the rear end of the main cuff is concave inwards to form a spherical cavity. In the process that the main cuff extends into the respiratory tract, the ellipsoidal surface at the front end of the main cuff plays a guiding role, and sputum can be accumulated in the spherical cavity at the rear end of the main cuff after the main cuff is inflated, so that the sputum suction tube is favorable for sucking sputum.
Preferably, a plurality of valve supporting membranes are arranged in the main cuff, and a flocking layer is arranged on the outer wall of the main cuff. The supporting membrane plays a role in strengthening and supporting the main sleeve bag and prevents sputum on the upper part of the main sleeve bag from permeating into the lower part of the main sleeve bag; the flocking layer can increase the adhesive force between the main bag sleeve and the inner wall of the respiratory tract and reduce the occurrence of liquid seepage.
Preferably, a plurality of isolation holes are arranged in the denture base. The main inflation tube, the auxiliary inflation tube and the sputum suction tube penetrate through different isolation holes in the denture base, so that the main inflation tube, the auxiliary inflation tube and the sputum suction tube are convenient for a user to distinguish, and misoperation is prevented.
Preferably, the wall of the sputum suction pipe is provided with a plurality of sputum suction through holes, and the sputum suction through holes are long slotted holes. The sputum suction through hole is convenient for sputum suction.
Preferably, the side surface of the sputum suction pipe is provided with a plurality of sputum suction branch pipes, the sputum suction branch pipes are flexible hoses, the outer ends of the sputum suction branch pipes are provided with ball sleeves, the surface of each ball sleeve is provided with a plurality of sputum suction holes, and the inner ends of the sputum suction branch pipes are communicated with the sputum suction pipe. Because the whole sputum suction tube is close to the central parts of the main cuff and the auxiliary cuff, a larger gap exists between the sputum suction tube and the inner wall of the respiratory tract, and the sputum suction effect is good after sputum is accumulated; the sputum suction structure sucks sputum through the sputum suction branch pipes, the sputum suction branch pipes are closer to (do not contact with) the inner wall of the respiratory tract, sputum can be quickly sucked without waiting for accumulation of sputum, the sputum suction efficiency is higher, and the sputum suction is more thorough; and the sputum suction state of the patient can be sitting, can be supine, can lie on one's side, the position that the sputum gathers under the effect of gravity has the difference, inhales the phlegm branch pipe in this structure and is the flexible hose, inhales the position that the ball cover of the phlegm branch pipe outer end corresponds with the position that the sputum gathers under the effect of gravity to be favorable to inhaling the phlegm more.
Preferably, an auxiliary air pipe is sleeved on the outer side of the sputum suction pipe, a ring cavity is formed between the auxiliary air pipe and the sputum suction pipe, a diaphragm is arranged in the sputum suction branch pipe, the diaphragm divides the space in the sputum suction branch pipe into an inflation channel and a sputum suction channel, the ball sleeve is communicated with the outer end of the sputum suction channel, the outer end of the inflation channel is closed, and the inner end of the inflation channel is communicated with the ring cavity. Adult, child's respiratory track internal diameter have the difference, and when patient sat and found to inhale the phlegm, the ball cover leads to being difficult to with the laminating of respiratory track inner wall under the effect of gravity, can aerify in order to change the intensity of inhaling the phlegm branch pipe in this structure to inflation channel through the auxiliary gas pipe to effectual adjustment ball cover and respiratory track inner wall's position improves and inhales phlegm efficiency.
Preferably, the upper end of the auxiliary air pipe is provided with an end cover, the side surface of the end cover is provided with an auxiliary air pipe joint, and the inner end of the auxiliary air pipe joint is communicated with the annular cavity.
Therefore, the invention has the advantages of convenient use, short sputum suction time, high sputum suction efficiency and more comfortable patient in the sputum suction process.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
Fig. 2 is an exploded view of fig. 1.
Figure 3 is a schematic representation of the connection of the catheter to the main cuff.
FIG. 4 is a schematic cross-sectional view of the main cuff.
Fig. 5 is a partially enlarged view of a portion a in fig. 2.
FIG. 6 is another schematic view of the sputum aspirator tube.
FIG. 7 is a schematic view showing the connection between the sputum aspirating tubes and the sputum aspirating branch tubes in FIG. 6.
Fig. 8 is a partially enlarged view of the portion B in fig. 7.
Fig. 9 is a partially enlarged view of C in fig. 7.
In the figure: the sputum suction device comprises a catheter 1, a Murphy hole 100, a catheter joint 101, a main cuff 2, an ellipsoid 200, a spherical cavity 201, a support membrane 202, a main inflation tube 3, a main inflation joint 300, a connecting sleeve 4, a sputum suction tube 5, a sputum suction through hole 50, a sputum suction tube joint 51, an auxiliary inflation tube 52, an annular cavity 53, an end cover 54, an auxiliary inflation tube joint 55, a clamping ring 6, a denture 7, an isolation hole 70, an auxiliary cuff 8, an auxiliary inflation tube 9, an auxiliary inflation tube joint 90, a middle cuff 10, a middle inflation tube 11, a middle inflation joint 110, a sputum suction branch tube 500, a ball sleeve 501, a sputum suction hole 502, a diaphragm 503, an inflation channel 504 and a sputum suction channel 505.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, 2, 3 and 4, the external sputum aspirator tube assembly structure comprises a guide tube 1, a main cuff 2 and a main inflation tube 3, wherein the main cuff 2 is cylindrical as a whole, a connecting sleeve 4 is arranged at the center of the main cuff 2, the guide tube 1 passes through the connecting sleeve 4 and is fixedly connected with the connecting sleeve, the front end of the guide tube 1 passes through the main cuff and is fixedly connected with the main cuff, the front end of the guide tube 1 is provided with Murphy's eye 100, the side wall of the guide tube 1 is provided with scales, the rear end of the guide tube 1 is provided with a guide tube joint 101, the front end of the main inflation tube 3 is connected with the main cuff 2, the rear end of the main inflation tube 3 is provided with a main inflation joint 300, the outer side of the guide tube 1 is provided with a sputum aspirator tube 5, the front end of the sputum aspirator tube 5 is connected with the guide tube 1 through a snap ring 6, as shown in fig. 5, the tube wall of the sputum aspirator tube 5 is provided with a plurality of sputum aspirating through holes 50, the sputum through holes are long slotted holes; the outer side of the rear end of the catheter 1 is provided with a denture base 7, a plurality of isolation holes 70 are arranged in the denture base 7, the rear ends of the catheter 1, the main inflation tube 3 and the sputum suction tube 5 penetrate through the denture base, and the rear end of the sputum suction tube 5 is provided with a sputum suction tube joint 51; an auxiliary cuff 8 is arranged in the middle of the catheter 1, an auxiliary inflation tube 9 connected with the auxiliary cuff is arranged on the outer side of the catheter 1, and an auxiliary inflation tube joint 90 is arranged at the rear end of the auxiliary inflation tube; the outer side of the catheter 1 is positioned between the main cuff 2 and the auxiliary cuff 8 and is provided with a middle cuff 10, the outer side of the catheter 1 is provided with a middle inflation tube 11, the front end of the middle inflation tube 11 is connected with the middle cuff, the rear end of the middle inflation tube 11 is provided with a middle inflation joint 110, and the front end of the sputum suction tube sequentially penetrates through the auxiliary cuff 8 and the middle cuff 10 and then is connected with the side surface of the catheter at the rear end of the main cuff 2.
As shown in fig. 3 and 4, the front end of the main cuff 2 is convex outward to form an ellipsoid 200, and the rear end of the main cuff 2 is concave inward to form a spherical cavity 201; a plurality of valve supporting membranes 202 are arranged in the main cuff 2, and a flocking layer is arranged on the outer wall of the main cuff, wherein the flocking layer in the embodiment is a nylon fiber flocking layer.
As shown in figures 6, 7, 8 and 9, another embodiment of the sputum aspirator tube is shown: the side surface of the sputum suction pipe 5 is provided with a plurality of sputum suction branch pipes 500, the sputum suction branch pipes 500 are flexible hoses, the outer ends of the sputum suction branch pipes 500 are provided with ball sleeves 501, the surface of the ball sleeves 501 is provided with a plurality of sputum suction holes 502, and the inner ends of the sputum suction branch pipes 500 are communicated with the sputum suction pipe 5; an auxiliary air pipe 52 is sleeved on the outer side of the sputum suction pipe 5, an annular cavity 53 is formed between the auxiliary air pipe and the sputum suction pipe, an end cover 54 is arranged at the upper end of the auxiliary air pipe 52, an auxiliary air pipe joint 55 is arranged on the side face of the end cover 54, and the inner end of the auxiliary air pipe joint 55 is communicated with the annular cavity 53; a diaphragm 503 is arranged in the sputum suction branch pipe 500, the space in the sputum suction branch pipe is divided into an inflation channel 504 and a sputum suction channel 505 by the diaphragm 503, the ball sleeve 501 is communicated with the outer end of the sputum suction channel 505, the outer end of the inflation channel 504 is closed, and the inner end of the inflation channel is communicated with the annular cavity. The sputum suction tube can be used for inflating the inflation channel 504 through the joint of the auxiliary air tube, so that the strength of the sputum suction branch tube 500 is adjusted, the position between the ball sleeve 501 and the inner wall of the respiratory tract is adjusted, the sputum suction effect of the sputum suction tube is better, the sputum suction is more thorough, and the sputum suction operation of patients in different states (sitting, lying on back, lying on side and the like) can be used.
The principle of the invention is as follows with reference to the attached drawings: when the sputum suction catheter is used, the catheter and the main cuff extend into the respiratory tract of a patient, the main cuff is inflated through the main inflation tube, the main cuff is inflated and expanded, the outer wall of the main cuff is in contact support with the inner wall of the respiratory tract, the auxiliary cuff is inflated through the auxiliary inflation tube, the auxiliary cuff is inflated and supported with the respiratory tract, a relatively closed sputum suction space is formed between the main cuff and the auxiliary cuff, and the catheter can keep the normal respiration and ventilation of the patient; sputum in the respiratory tract is accumulated at a position between the main sac sleeve and the auxiliary sac sleeve after being secreted, then a sputum suction pipe joint at the outer end of a sputum suction pipe is connected with an external sputum suction apparatus to suck out the sputum in the respiratory tract, the sputum suction pipe is arranged on the outer side of the catheter, the internal space of the catheter cannot be occupied, the sputum is directly sucked out through the sputum suction pipe, and the sputum cannot enter the catheter; the sputum suction tube assembly is convenient to use, short in sputum suction time, high in sputum suction efficiency and more comfortable for patients in the sputum suction process.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (8)
1. An external sputum aspirator tube assembly structure comprises a catheter, a main cuff and a main inflation tube, wherein the front end of the catheter penetrates through the main cuff to be fixedly connected with the main cuff, a catheter connector is arranged at the rear end of the catheter, the front end of the main inflation tube is connected with the main cuff, and a main inflation connector is arranged at the rear end of the main inflation tube; the middle part of the catheter is provided with an auxiliary cuff, the outer side of the catheter is provided with an auxiliary inflation tube connected with the auxiliary cuff, and the rear end of the auxiliary inflation tube is provided with an auxiliary inflation tube joint; the side surface of the sputum suction pipe is provided with a plurality of sputum suction branch pipes, the sputum suction branch pipes are flexible hoses, the outer ends of the sputum suction branch pipes are provided with ball sleeves, the surface of each ball sleeve is provided with a plurality of sputum suction holes, and the inner ends of the sputum suction branch pipes are communicated with the sputum suction pipe; the sputum suction device is characterized in that an auxiliary air pipe is sleeved on the outer side of the sputum suction pipe, a ring cavity is formed between the auxiliary air pipe and the sputum suction pipe, a diaphragm is arranged in the sputum suction branch pipe, the space in the sputum suction branch pipe is divided into an inflation channel and a sputum suction channel by the diaphragm, the ball sleeve is communicated with the outer end of the sputum suction channel, the outer end of the inflation channel is closed, and the inner end of the inflation channel is communicated with the ring cavity.
2. The external sputum aspirator tube assembly structure of claim 1, wherein a middle cuff is arranged between the main cuff and the auxiliary cuff at the outer side of the catheter, a middle inflation tube is arranged at the outer side of the catheter, the front end of the middle inflation tube is connected with the middle cuff, and a middle inflation joint is arranged at the rear end of the middle inflation tube; the front end of the sputum suction tube sequentially passes through the auxiliary cuff and the middle cuff and then is connected with the side surface of the catheter at the rear end of the main cuff.
3. The external sputum aspirator tube assembly structure of claim 1, wherein the main cuff is cylindrical, the connecting sleeve is arranged at the center of the main cuff, the catheter passes through the connecting sleeve and is fixedly connected with the connecting sleeve, the front end of the catheter is provided with Murphy's eye, and the side wall of the catheter is provided with scales.
4. The external sputum aspirator tube assembly structure of claim 3, wherein the front end of the main cuff is convex outwards to form an ellipsoid, and the back end of the main cuff is concave inwards to form a spherical cavity.
5. The external sputum aspirator tube assembly structure of claim 1, 3 or 4, wherein the main cuff is provided with a plurality of valve support membranes, and the outer wall of the main cuff is provided with a flocking layer.
6. The external sputum aspirator tube assembly structure of claim 1, wherein the dental tray is provided with a plurality of isolation holes.
7. The external sputum aspirator tube assembly structure of claim 1, wherein the wall of the sputum aspirator tube is provided with a plurality of sputum aspirating through holes, and the sputum aspirating through holes are slotted holes.
8. The external sputum aspirator tube assembly structure of claim 1, wherein an end cap is provided at the upper end of the auxiliary trachea, an auxiliary trachea connector is provided at the side surface of the end cap, and the inner end of the auxiliary trachea connector is communicated with the annular cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417199.3A CN111569234B (en) | 2020-05-18 | 2020-05-18 | External sputum suction tube assembly structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417199.3A CN111569234B (en) | 2020-05-18 | 2020-05-18 | External sputum suction tube assembly structure |
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| CN111569234A CN111569234A (en) | 2020-08-25 |
| CN111569234B true CN111569234B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010417199.3A Active CN111569234B (en) | 2020-05-18 | 2020-05-18 | External sputum suction tube assembly structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204379936U (en) * | 2014-12-30 | 2015-06-10 | 唐洪波 | Tracheal casing pipe can be attracted under the double bolloon alliteration door of closed endotracheal suction blowout prevention |
| CN204411458U (en) * | 2015-01-07 | 2015-06-24 | 刘庆华 | Automatic pressure-reducing air bags three cavities airway |
| CN204502009U (en) * | 2015-03-07 | 2015-07-29 | 兰州大学第一医院 | A kind of multifunctional trachea catheter |
| CN204766722U (en) * | 2015-05-17 | 2015-11-18 | 吴明秋 | Convenient sputum aspirator |
| CN204910407U (en) * | 2015-07-22 | 2015-12-30 | 江南大学附属医院（无锡市第四人民医院） | Two -chamber trachea cannula in phlegm hole is inhaled in top area |
| CN205683368U (en) * | 2016-05-06 | 2016-11-16 | 邹弘 | A kind of visual trachea cannula |
| CN109701130A (en) * | 2017-10-25 | 2019-05-03 | 杨定东 | A kind of first aid two-chamber double cuff larynx snorkel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204319459U (en) * | 2014-12-01 | 2015-05-13 | 张朝霞 | Tracheal cannula |
-
2020
- 2020-05-18 CN CN202010417199.3A patent/CN111569234B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204379936U (en) * | 2014-12-30 | 2015-06-10 | 唐洪波 | Tracheal casing pipe can be attracted under the double bolloon alliteration door of closed endotracheal suction blowout prevention |
| CN204411458U (en) * | 2015-01-07 | 2015-06-24 | 刘庆华 | Automatic pressure-reducing air bags three cavities airway |
| CN204502009U (en) * | 2015-03-07 | 2015-07-29 | 兰州大学第一医院 | A kind of multifunctional trachea catheter |
| CN204766722U (en) * | 2015-05-17 | 2015-11-18 | 吴明秋 | Convenient sputum aspirator |
| CN204910407U (en) * | 2015-07-22 | 2015-12-30 | 江南大学附属医院（无锡市第四人民医院） | Two -chamber trachea cannula in phlegm hole is inhaled in top area |
| CN205683368U (en) * | 2016-05-06 | 2016-11-16 | 邹弘 | A kind of visual trachea cannula |
| CN109701130A (en) * | 2017-10-25 | 2019-05-03 | 杨定东 | A kind of first aid two-chamber double cuff larynx snorkel |
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| CN111569234A (en) | 2020-08-25 |
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