CN219662578U - Upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions - Google Patents
Upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions Download PDFInfo
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- CN219662578U CN219662578U CN202222553669.6U CN202222553669U CN219662578U CN 219662578 U CN219662578 U CN 219662578U CN 202222553669 U CN202222553669 U CN 202222553669U CN 219662578 U CN219662578 U CN 219662578U
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- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 12
- 210000001035 gastrointestinal tract Anatomy 0.000 title abstract description 8
- 238000010992 reflux Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 210000004704 glottis Anatomy 0.000 claims abstract description 8
- 230000002496 gastric effect Effects 0.000 claims description 26
- 210000002438 upper gastrointestinal tract Anatomy 0.000 claims description 18
- 210000003238 esophagus Anatomy 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 210000000111 lower esophageal sphincter Anatomy 0.000 claims description 4
- 210000001630 jejunum Anatomy 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 230000004648 relaxation of smooth muscle Effects 0.000 claims description 2
- 210000001942 upper esophageal sphincter Anatomy 0.000 claims description 2
- 210000005070 sphincter Anatomy 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 210000002460 smooth muscle Anatomy 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 4
- 230000009747 swallowing Effects 0.000 description 4
- 208000000884 Airway Obstruction Diseases 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 210000004072 lung Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000002784 stomach Anatomy 0.000 description 3
- 206010035664 Pneumonia Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 208000021302 gastroesophageal reflux disease Diseases 0.000 description 2
- 210000003709 heart valve Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010000060 Abdominal distension Diseases 0.000 description 1
- 206010003497 Asphyxia Diseases 0.000 description 1
- 208000014644 Brain disease Diseases 0.000 description 1
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- 206010018001 Gastrointestinal perforation Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000023668 Pharyngeal disease Diseases 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
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- 210000003736 gastrointestinal content Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- 210000000936 intestine Anatomy 0.000 description 1
- 230000000302 ischemic effect Effects 0.000 description 1
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- 210000003300 oropharynx Anatomy 0.000 description 1
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Abstract
The utility model discloses an upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions, and belongs to the technical field of medical appliances. It comprises the following steps: the upper digestive tract catheter body comprises an outer tube and a main tube cavity arranged in the outer tube, and a suction port is formed in the tube wall of the outer tube; one end of the suction tube cavity is connected with the negative pressure device, and the other end of the suction tube cavity extends into the outer tube and is connected with the suction port; the detection unit is arranged on the outer wall of the outer tube and is close to the suction port, and the detection unit and the negative pressure device are connected with the microcomputer module; the microelectrodes are arranged in a plurality and sequentially arranged on the outer tube, and are connected with a microcomputer module outside the body. The microcomputer module can control the negative pressure device to attract effusion and reflux at the glottis of the throat part, plays a role in preventing error suction, and can also control the microelectrode to send microcurrent pulses, so that the purpose that esophageal smooth muscle regularly contracts or expands or the upper end and the lower end of the esophageal sphincter continuously contract is realized, and the effects of emptying promotion and reflux resistance are achieved.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to an upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions.
Background
Gastric (jejunal) catheterization is widely used in clinical practice, and patients who need enteral nutrition or gastrointestinal decompression, various causes such as dysphagia due to brain diseases, oral pharyngeal diseases, esophageal diseases, neuromuscular diseases, etc., acute gastric distention, upper gastrointestinal perforation, gastrointestinal obstruction, abdominal operation, etc. all have the need to prevent gastric (jejunal) catheterization.
The prior patent discloses or clinically applied anti-reflux gastric (jejunum) tube adopts an anti-reflux balloon device at the lower esophageal segment or cardiac valve, and the balloon is inflated or injected with water to expand the balloon, so that certain compression is formed on the lower esophageal segment or cardiac valve, the esophageal lumen is sealed, and the reflux of gastric contents into the esophagus and oropharynx is prevented in a physical isolation mode, so that the aspiration into the lung is prevented. Such anti-reflux upper gastrointestinal catheters have the following disadvantages:
1. the anti-reflux efficiency is low, and the balloon is not expanded enough or shifted, so that gastric contents can enter the esophagus from the external space of the balloon to form reflux;
2. the excessive balloon pressure and the too long compression time can cause the ischemic necrosis of the esophageal mucosa and even the scar stenosis;
3. the balloon is moved upwards to enter the throat to cause airway obstruction, and the risk of suffocation death of a patient exists;
4. sensing and attracting functions daily for regurgitant or fluid of the throat;
5. the reflux prevention cannot be intelligently performed according to the needs of patients.
Disclosure of Invention
The utility model aims at the problems existing in the prior art and provides an upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions.
The utility model can be realized by the following technical scheme:
an upper gastrointestinal tract catheter with evacuation-promoting, reflux-resisting and aspiration-preventing functions, comprising:
the upper gastrointestinal tract catheter body comprises an outer tube and a main tube cavity arranged in the outer tube, wherein an aspiration port is further formed in the tube wall of the outer tube, and the aspiration port is close to the glottis of the throat part after the upper gastrointestinal tract catheter body is inserted into the gastric cavity or the jejunum cavity;
one end of the suction tube cavity is connected with an external negative pressure device, and the other end of the suction tube cavity extends into the outer tube and is connected with the suction port;
the detection unit is arranged on the outer wall of the outer tube and is close to the suction port, and when the detection unit detects that the accumulated liquid or the reflux object exists at the position near the suction port, the negative pressure device is started and the accumulated liquid or the reflux object is sucked out through the suction lumen;
the micro-electrodes are arranged in number and sequentially sleeved on the outer tube between the suction port and the gastric cavity, are connected with a microcomputer module outside the body, and are controlled to generate micro-current pulses by the microcomputer module so as to stimulate the contraction or the relaxation of smooth muscle of the esophagus.
As a further improvement of the utility model, the detection unit comprises a sensor receiving end and a sensor transmitting end, wherein the sensor receiving end and the sensor transmitting end are respectively positioned at two sides of the suction port.
As a further improvement of the utility model, the sensor transmitting end is positioned between the suction port and the microelectrode.
As a further improvement of the utility model, the detection unit and the external negative pressure device are electrically connected with the microcomputer module, and when the accumulated liquid or the reflux object blocks the signal transmitted from the sensor transmitting end to the sensor receiving end, the microcomputer module gives out alarm sound and controls the negative pressure device to start negative pressure suction.
As a further improvement of the utility model, a distance is reserved between two adjacent microelectrodes, the uppermost microelectrode is close to the suction opening and aligned with the upper esophageal sphincter, and the lowermost microelectrode is at least beyond the lower esophageal sphincter.
As a further improvement of the utility model, at least one of said microelectrodes in the intermediate position is directed towards the lower esophageal sphincter.
As a further improvement of the utility model, each microelectrode is independently and electrically connected with the microcomputer module, and any one microelectrode can be controlled to emit micro-current pulses by the microcomputer module.
As a further improvement of the utility model, an indicating strip is arranged between the suction port and the microelectrode at the uppermost section, and the indicating strip is connected with the inner wall of the outer tube and is coated with a color which is not easy to penetrate by X rays.
As a further improvement of the present utility model, the annular surface of each of the microelectrodes is coated with a color which is not readily penetrated by X-rays.
Compared with the prior art, the utility model has the following beneficial effects:
1. when the detection unit detects that effusion or reflux exists near the suction port, the detection unit transmits a signal to the microcomputer module, the microcomputer module automatically starts (or manually controls) the negative pressure device to suck the effusion or reflux near the suction port, and simultaneously gives an alarm to prevent a patient from sucking the effusion or reflux into the lung by mistake, so that the effect of preventing aspiration is achieved, and the situations of airway obstruction and pneumonia of the patient are avoided.
2. After the upper gastrointestinal catheter body is correctly placed in the gastric cavity or the jejunal cavity, each microelectrode can be controlled by the microcomputer module to sequentially send micro-current pulses to simulate the swallowing process, and the micro-current pulses are particularly characterized by stimulating smooth muscle of the esophagus to regularly shrink or relax, so that the esophagus is promoted to be emptied from top to bottom, and the micro-current pulses play a role in promoting the emptying of partial patients difficult to swallow smoothly;
3. when the evacuation-promoting operation is completed, the micro-electrodes at the upper end and the lower end of the esophageal sphincter are controlled by the microcomputer module to continuously send micro-current pulses, so that the upper end and the lower end of the esophageal sphincter are continuously contracted, and the purpose of preventing gastroesophageal reflux is achieved.
4. An indication strip is arranged between the suction port and the uppermost section microelectrode, the indication strip is connected with the inner wall of the outer tube and is coated with a color which is striking and not easy to be penetrated by X rays, so that the effect of X rays is achieved when the upper gastrointestinal catheter body is placed, under the positioning effect of the X rays, medical staff can clearly distinguish the position of the indication strip, and then the position of the suction port is positioned, so that the suction port can be accurately positioned above the glottis of the throat.
5. The annular surface of each microelectrode is coated with a color which is striking and not easy to be penetrated by X rays, and plays a role in accurately positioning the microelectrode.
Drawings
FIG. 1 is a schematic diagram of an upper gastrointestinal tract having evacuation-promoting, anti-reflux, anti-aspiration functions in accordance with the present utility model;
FIG. 2 is a cross-sectional view at A-A in FIG. 1 of the present utility model;
fig. 3 is a cross-sectional view of the utility model at B-B of fig. 1.
In the figure, 100, upper gastrointestinal tract catheter body; 110. an outer tube; 120. a main lumen; 130. a suction port; 140. suction lumen; 150. a detection unit; 151. a sensor receiving end; 152. a sensor transmitting end; 160. a microelectrode; 170. a microcomputer module; 180. an indicator strip; 190. small wires.
Detailed Description
The following are specific embodiments of the present utility model and the technical methods of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1-3, the present utility model provides an upper gastrointestinal tract catheter with evacuation-promoting, anti-reflux, anti-aspiration functions, comprising:
the upper gastrointestinal tract catheter body 100 comprises an outer tube 110 and a main tube 120 arranged in the outer tube 110, wherein the insertion end of the main tube 120 is inserted into a gastric cavity or a jejunal cavity along with the outer tube 110, and the external end joint of the main tube 120 can be closed or connected with an input tube, a syringe or a negative pressure suction device to play a role in draining gastrointestinal contents and gas when nutrient solution, medicine and water are injected into the gastrointestinal tract or the gastrointestinal tract is depressurized, wherein the upper gastrointestinal tract catheter body 100 in the embodiment can be used as a gastric tube or a jejunal tube according to requirements;
in addition, the wall of the outer tube 110 is also provided with a suction opening 130, after the upper gastrointestinal catheter body 100 is inserted into the gastric cavity, the suction opening 130 is close to the glottis of the throat part, and the specific position of the suction opening is positioned above the glottis of the throat part, because liquid or reflux is mainly accumulated in the region;
a suction lumen 140 having one end connected to an external negative pressure device (not shown) and the other end extending into the outer tube 110 and connected to the suction port 130, whereby when the external negative pressure device is turned on, the liquid or the reflux collected near the suction port 130 is sucked out through the suction lumen 140;
the detecting unit 150 is arranged on the outer wall of the outer tube 110 and is close to the suction port 130, the detecting unit 150 is used for detecting whether effusion or reflux exists near the suction port 130, when the detecting unit 150 detects that effusion or reflux exists near the suction port 130, the negative pressure device can be automatically or manually started and the effusion or reflux is sucked outwards through the suction lumen 140, so that the excessive accumulation of the liquid or reflux is prevented from being sucked into the lung, the effect of preventing erroneous suction is further achieved, and the situations of airway obstruction and pneumonia are avoided;
the microelectrodes 160 are arranged in number and sequentially sleeved on the outer tube 110 between the suction opening 130 and the stomach cavity, wherein when the upper gastrointestinal catheter body 100 is correctly placed in the stomach cavity and the suction opening 130 is positioned above the glottis of the throat part, the microelectrodes 160 are sequentially arranged along the esophagus, the microelectrodes 160 are connected with the microcomputer module 170 outside the body, and the microcomputer module 170 controls the microelectrodes 160 to generate micro-current pulses so as to stimulate the smooth muscle of the esophagus to shrink or relax;
it should be noted that, after the upper gastrointestinal catheter body 100 is correctly placed in the stomach and intestine, the microcomputer module 170 controls each microelectrode 160 to sequentially send micro-current pulses to simulate the swallowing process, which is specifically shown as stimulating the smooth muscle of the esophagus to regularly shrink or relax, promoting the evacuation of the esophagus from top to bottom, and playing a role in promoting the evacuation for a part of patients with difficulty in swallowing smoothly;
in addition, the patient may have reflux because the upper and lower ends of the esophageal sphincter are relaxed, and the reflux is most remarkable in a subsequent period of time after the evacuation-promoting operation has been completed because a large amount of food or liquid has been introduced into the gastric cavity of the patient, so that the micro-electrodes 160 at the upper and lower ends of the esophageal sphincter need to be controlled by the microcomputer module 170 to continuously transmit micro-current pulses, thereby continuously contracting the upper and lower ends of the esophageal sphincter, thereby achieving the purpose of preventing gastroesophageal reflux.
Preferably, the detecting unit 150 includes a sensor receiving end 151 and a sensor transmitting end 152, and when the upper gastrointestinal catheter body 100 is correctly placed in the gastrointestinal cavity, the sensor receiving end 151 and the sensor transmitting end 152 are respectively located at two sides of the suction port 130, and meanwhile, the sensor transmitting end 152 is located between the suction port 130 and the microelectrode 160, where the sensor receiving end 151 and the sensor transmitting end 152 can select different sensor types according to actual needs, such as an acousto-optic sensor, an infrared sensor, etc., and a specific alternative is easily implemented by a person skilled in the art, so that it is not set forth one by one in the embodiment, and preferably an acousto-optic sensor is used as the description object;
specifically, the detection unit 150 and the external negative pressure device are electrically connected to the microcomputer module 170, and when the sensing end of the sensor is set to be an acousto-optic sensor and the transmitting end 152 of the sensor is set to be an acousto-optic transmitter, the specific detection principle is as follows: when no effusion or reflux exists near the suction port 130, the acousto-optic sensor can receive the signal transmitted by the acousto-optic emitter, and when effusion or reflux is accumulated near the suction port 130, the part of effusion or reflux can obstruct the signal transmitted by the acousto-optic emitter, and at the moment, the external microcomputer module 170 can automatically open the negative pressure device to perform negative pressure suction, so that the effusion or reflux accumulated near the suction port 130 can be sucked outwards smoothly;
it should be noted that, to better control the negative pressure suction, the external section of the main tube 120 is provided with a current gate switch electrically connected with the microcomputer module 170, after the current gate switch is turned on, the microcomputer module 170 can automatically turn on the negative pressure device and perform negative pressure suction, after the current gate switch is turned off, the negative pressure suction can be manually connected, and the operation is more flexible;
in addition, the microcomputer module 170 may be electrically connected to an alarm (not shown), and specifically configured such that when the detecting unit 150 detects that the suction port 130 gathers liquid accumulation or reverse flow, the detecting unit 150 transmits a signal to the microcomputer module 170, and at this time, the microcomputer module 170 controls the alarm to alarm, and at the same time, can automatically start negative pressure suction or wait for a medical staff to manually start negative pressure suction, so as to further improve the safety when sucking liquid accumulation or reverse flow.
Preferably, a distance is reserved between two adjacent microelectrodes 160, the uppermost microelectrode 160 is close to the suction opening 130 and aligned with the upper sphincter of the esophagus, the lowermost microelectrode 160 at least exceeds the lower sphincter of the esophagus, and at least one microelectrode 160 positioned in the middle is aligned with the lower sphincter of the esophagus, so that the microcomputer module 170 can be ensured to emit micro-current pulses by controlling each microelectrode 160, the purpose of promoting emptying is achieved by simulating swallowing of the esophagus, and the sphincters at the upper end and the lower end of the esophagus can be independently stimulated to achieve the purpose of resisting reflux.
Preferably, an indication strip 180 is arranged between the suction port 130 and the uppermost microelectrode 160, the indication strip 180 is connected with the inner wall of the outer tube 110 and is coated with a color which is striking in color and not easy to be penetrated by X-rays, so that the effect of X-ray positioning is achieved when the upper gastrointestinal catheter body 100 is placed, and under the positioning effect of the X-rays, medical staff can clearly distinguish the position of the indication strip 180, and then position the suction port 130, so that the suction port 130 can be accurately positioned at a position above a glottis of a throat.
Preferably, the annular surface of each microelectrode 160 is coated with a color that is conspicuous and not easily penetrated by X-rays, and also serves to precisely locate the microelectrode 160.
In addition, in the present embodiment, the wires 190 are led out from the outer tube 110 between the detecting unit 150 and the microcomputer module 170, and between each of the microelectrodes 160 and the microcomputer module 170.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, and also comprises the technical scheme formed by any combination of the technical features. The foregoing is a specific embodiment of the utility model, it will be appreciated by those skilled in the art that modifications and variations may be made without departing from the principles of the utility model, and such modifications and variations are to be regarded as being within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Claims (9)
1. An upper gastrointestinal tract catheter with evacuation-promoting, reflux-resisting and aspiration-preventing functions, comprising:
the upper gastrointestinal tract catheter body comprises an outer tube and a main tube cavity arranged in the outer tube, wherein an aspiration port is further formed in the tube wall of the outer tube, and the aspiration port is close to the glottis of the throat part after the upper gastrointestinal tract catheter body is inserted into the gastric cavity or the jejunum cavity;
one end of the suction tube cavity is connected with an external negative pressure device, and the other end of the suction tube cavity extends into the outer tube and is connected with the suction port;
the detection unit is arranged on the outer wall of the outer tube and is close to the suction port, and when the detection unit detects that the accumulated liquid or the reflux object exists at the position near the suction port, the negative pressure device is started and the accumulated liquid or the reflux object is sucked out through the suction lumen;
the micro-electrodes are arranged in number and sequentially sleeved on the outer tube between the suction port and the gastric cavity, are connected with a microcomputer module outside the body, and are controlled to generate micro-current pulses by the microcomputer module so as to stimulate the contraction or the relaxation of smooth muscle of the esophagus.
2. The upper gastrointestinal tract catheter with evacuation-promoting, reflux-resisting and aspiration-preventing functions according to claim 1, wherein the detection unit comprises a sensor receiving end and a sensor transmitting end, and the sensor receiving end and the sensor transmitting end are respectively positioned at two sides of the suction port.
3. An upper gastrointestinal tract catheter with evacuation-promoting, reflux-preventing and aspiration-preventing functions according to claim 2, wherein the sensor emitting end is located between the suction port and the microelectrode.
4. An upper gastrointestinal tract catheter with evacuation-promoting, reflux-resisting and aspiration-preventing functions according to claim 3, wherein the detection unit and an external negative pressure device are electrically connected with the microcomputer module, and when the accumulated liquid or reflux object obstructs the signal emitted from the sensor emitting end to the sensor receiving end, the microcomputer module sounds an alarm and controls the negative pressure device to start negative pressure aspiration.
5. An upper gastrointestinal tract comprising evacuation-promoting, reflux-preventing and aspiration-preventing functions according to claim 1 wherein a distance is provided between adjacent ones of said microelectrodes, the uppermost microelectrode being positioned adjacent said suction orifice and aligned with the upper esophageal sphincter and the lowermost microelectrode being positioned at least beyond said lower esophageal sphincter.
6. An upper gastrointestinal tract comprising evacuation-promoting, anti-reflux, and anti-aspiration functions according to claim 5 wherein at least one of said microelectrodes is positioned in an intermediate position in alignment with the lower esophageal sphincter.
7. An upper gastrointestinal tract catheter with evacuation-promoting, reflux-preventing and aspiration-preventing functions according to claim 1, wherein each microelectrode is independently electrically connected to the microcomputer module, and any one of the microelectrodes is controlled by the microcomputer module to emit a microcurrent pulse.
8. An upper gastrointestinal catheter with evacuation-promoting, reflux-resisting and aspiration-preventing functions according to claim 1, wherein an indicator strip is arranged between the suction port and the uppermost microelectrode, and the indicator strip is connected with the inner wall of the outer tube and is coated with a color which is not easily penetrated by X-rays.
9. An upper gastrointestinal tract catheter with evacuation-promoting, reflux-preventing and aspiration-preventing functions according to claim 1, wherein the annular surface of each microelectrode is coated with a color that is not readily penetrable by X-rays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222553669.6U CN219662578U (en) | 2022-09-22 | 2022-09-22 | Upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222553669.6U CN219662578U (en) | 2022-09-22 | 2022-09-22 | Upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219662578U true CN219662578U (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222553669.6U Active CN219662578U (en) | 2022-09-22 | 2022-09-22 | Upper digestive tract catheter with emptying-promoting, anti-reflux and anti-aspiration functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219662578U (en) |
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2022
- 2022-09-22 CN CN202222553669.6U patent/CN219662578U/en active Active
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