CN112169067A - Continuous slow-release drug administration indwelling tube with slow-release tube and controller - Google Patents
Continuous slow-release drug administration indwelling tube with slow-release tube and controller Download PDFInfo
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- CN112169067A CN112169067A CN202011187910.7A CN202011187910A CN112169067A CN 112169067 A CN112169067 A CN 112169067A CN 202011187910 A CN202011187910 A CN 202011187910A CN 112169067 A CN112169067 A CN 112169067A
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- tube
- release
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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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
- A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
-
- 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
- A61M2205/18—General characteristics of the apparatus with alarm
-
- 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
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a continuous slow-release drug delivery indwelling tube with a slow-release tube and a controller, which comprises a drug injection tube, the slow-release tube and the controller, wherein one axial end of the slow-release tube is closed, the other axial end of the slow-release tube is communicated with an outlet of the drug injection tube, an inlet of the drug injection tube is connected with a drug storage bag, the drug storage bag is positioned in the controller, the controller is configured to adjust the drug storage bag to force out drug liquid in the drug storage bag at a preset drug injection pressure or drug injection speed, and the drug liquid enters the drug injection tube and is seeped to the outer side of the drug injection tube through the tube wall of the slow-release tube. The continuous slow-release drug administration indwelling tube with the slow-release tube and the controller avoids repeated puncture on a patient needing multiple drug administrations, does not need to puncture the patient at multiple points with a wide drug administration range, reduces pain of the patient in the medical treatment process, and improves the medical experience of the patient.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a continuous slow-release drug administration indwelling tube with a slow-release tube and a controller.
Background
For many patients with sports injury, a local nerve blocking method is often needed to relieve pain and eliminate inflammation, and for some patients with substantial tumors, a tumor body injection method can be used to kill tumor cells. However, the prior art only can carry out single administration, and patients who need to carry out multiple administrations have to puncture repeatedly, which undoubtedly increases the pain of the patients; in addition, during administration, the medicine only can be intensively effused from the outlet of the administration tube, and the medicine is often gathered at the outlet and can not be diffused to a sufficiently far area, so that for some patients needing wide administration range, the medicine has to be administered by multi-point puncture, and for the patients adopting percutaneous puncture area continuous administration treatment (such as analgesia, chemotherapy and the like), the invention is provided on the basis that the long-time uniform local administration can not be realized in a good mode.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a continuous sustained-release drug administration indwelling tube with a sustained-release tube and a controller, which avoids repeated puncturing of a patient who needs multiple drug administrations, does not need to puncture the patient at multiple points with a wide drug administration range, reduces pain of the patient in the medical treatment process, and improves the medical experience of the patient.
In order to solve the above problems, the present invention provides a continuous sustained release drug administration indwelling tube having a sustained release tube and a controller, comprising a drug injection tube and a sustained release tube, wherein one axial end of the sustained release tube is closed, the other axial end of the sustained release tube is connected to an outlet of the drug injection tube, an inlet of the drug injection tube is connected to a drug storage bag, the drug storage bag is located in the controller, the controller is configured to adjust the drug storage bag to force out a drug solution in the drug storage bag at a preset drug injection pressure or drug injection speed, and the drug solution enters the drug injection tube and seeps out to the outside of the drug injection tube through a tube wall of the sustained release tube.
Preferably, the slow release tube is made of medical hydrophilic and hydrophobic nano composite materials.
Preferably, the medical hydrophilic and hydrophobic nanocomposite comprises one of a fluoropolymer and a polyurethane.
Preferably, the medicine storage bag is communicated with the medicine injection tube through a connecting tube; or the medicine storage bag is detachably connected with the medicine injection tube, and/or the medicine injection tube is connected with the slow release tube into a whole.
Preferably, the connecting pipe with realize dismantling the connection through the adapter between the injection pipe.
Preferably, the continuous slow-release drug delivery indwelling tube with the slow-release tube and the controller further comprises a puncture outer sheath, wherein the puncture outer sheath is provided with a hollow lumen, and the drug injection tube passes through the hollow lumen; and/or the slow release tube passes through the hollow tube cavity.
Preferably, the penetrating sheath has a sheath core thereon.
Preferably, a display screen is arranged on the controller; and/or the controller is provided with an adjusting button.
Preferably, the controller is also internally provided with an induction element, the induction element is used for detecting the inner cavity pressure of the medicine storage bag, and an obtained inner cavity pressure signal is processed by a core operation element in the controller and then is transmitted and displayed on the display; and/or the acquired inner cavity pressure signal is operated by a core operation element in the controller to acquire the residual medicine quantity in the medicine storage bag, and the acquired residual medicine quantity is transmitted and displayed on the display.
Preferably, the controller further comprises an alarm device for sending an alarm signal when the pressure of the inner cavity of the medicine storage bag acquired by the sensing element exceeds a preset interval.
According to the continuous slow-release drug delivery indwelling tube with the slow-release tube and the controller, due to the design of the drug storage bag and the slow-release tube, medical staff can puncture once to achieve the purposes of multi-point puncture and repeated puncture in the prior art, liquid medicine in the drug storage bag, the drug injection tube and the slow-release tube can slowly permeate and seep to indwelling target tissues of patients through the slow-release tube, the tube length of the slow-release tube can cover a larger drug delivery area, and the patients with wide drug delivery range do not need to be punctured at multiple points and repeatedly punctured, so that pain in the medical treatment process of the patients is reduced, and medical experience of the patients is improved; in addition, in the technical scheme, the controller is used for adjusting and controlling the medicine injection pressure or speed of the liquid medicine in the medicine storage bag, so that the medicine administration amount can be accurately controlled.
Drawings
FIG. 1 is a schematic structural view of a continuous sustained-release administration indwelling tube having a sustained-release tube and a controller according to an embodiment of the present invention.
The reference numerals are represented as:
1. a medicine injection tube; 2. a medicine storage bag; 21. an adapter; 22. a connecting pipe; 3. a slow release tube; 4. puncturing the outer sheath; 5. a controller; 51. a display screen; 52. an adjusting knob.
Detailed Description
Referring to fig. 1, according to an embodiment of the present invention, a continuous sustained-release drug delivery indwelling tube with a sustained release tube and a controller is provided, which includes a drug injection tube 1, a sustained release tube 3, and a controller 5, wherein one axial end of the sustained release tube 3 is closed, the other axial end of the sustained release tube 3 is connected to an outlet of the drug injection tube 1 in a penetrating manner, an inlet of the drug injection tube 1 is connected to a drug storage bag 2, the drug storage bag 2 is located in the controller 5, and the controller 5 is configured to adjust the drug storage bag 2 to force out drug liquid in the drug storage bag 2 at a preset drug injection pressure or drug injection speed, so that the drug liquid enters the drug injection tube 1 and seeps out of the drug liquid to the outside of the drug injection tube 3 through a tube wall of the sustained release tube 3. In the technical scheme, through the design of the medicine storage bag 2 and the slow release tube 3, the aim of multi-point puncture and repeated puncture in the prior art can be fulfilled by medical workers only by puncturing once, liquid medicines in the medicine storage bag 2, the medicine injection tube 1 and the slow release tube 3 can slowly permeate and seep to indwelling target tissues of a patient through the slow release tube 3, the tube length of the slow release tube 3 can cover a larger medicine administration area, and the patient with a wide medicine administration range does not need to be punctured at multiple points and repeatedly punctured, so that the pain of the patient in the medical treatment process is reduced, and the medical experience of the patient is improved; in addition, in the technical scheme, the controller 5 is used for adjusting and controlling the medicine injection pressure or speed of the liquid medicine in the medicine storage bag 2, so that the medicine administration amount can be accurately controlled. It will be appreciated that the drug storage capsule 2 is provided with a drug injection port to allow for replenishment of the drug storage capsule 2 with drug solution.
Preferably, the medicine storage bag 3 is made of an elastic material, and specifically, for example, one of silica gel, rubber, latex or nylon can be used, wherein the formable wall thickness of the silica gel is 0.2-0.4mm, the shore softness is 30, the medicine storage bag can be manufactured by injection molding or bonding technology, the elasticity is good, the product performance is stable, the medicine storage bag is transparent, and the medicine storage bag can be beneficial for an operator to observe the liquid medicine condition in the bag; the formable wall thickness of the rubber is 0.5-0.8mm, the Shore softness is 40, the formable wall can be manufactured by adopting an injection molding or bonding process, the formable wall has general elasticity, the appearance is rough, the hardness is high, the formable wall is mostly white, and the liquid medicine condition in the capsule can not be observed; the formable wall thickness of the latex is 0.2-1mm, the Shore softness is 20-30, the formable latex can be manufactured by adopting an injection molding or bonding process, the formable latex has moderate elasticity, the appearance is not fine and smooth enough, the formable latex is semitransparent, and the forming effect is not good; the wall thickness of the formable nylon is 0.2-0.6mm, the formable nylon can be manufactured by adopting a bonding process, the formable nylon has poor elasticity and is semitransparent, and therefore, the formable nylon is best, and the medicine storage bag 3 is made of silica gel.
As a specific embodiment, it is preferable that the controller 5 is provided with a display screen 51 for displaying the current administration speed or administration pressure, so as to facilitate the medical staff to clearly determine the administration condition during the infusion process; meanwhile, the controller 5 is provided with an adjusting button 52, and the adjusting button 52 is used for adjusting the administration speed or the administration pressure, such as increasing the administration speed or the administration pressure or decreasing the administration speed or the administration pressure. Further, an induction element is arranged in the controller 5, the induction element is used for detecting the inner cavity pressure of the medicine storage bag 3, and an obtained inner cavity pressure signal is processed by a core operation element in the controller 3 and then is transmitted and displayed on the display 51; and/or the acquired inner cavity pressure signal is operated by a core operation element in the controller 3 to acquire the residual medicine quantity in the medicine storage bag 3, and the acquired residual medicine quantity is transmitted and displayed on the display 51.
As a better implementation manner, the controller 5 further includes an alarm device, and is configured to send an alarm signal when the pressure of the inner cavity of the medicine storage bag 3 obtained by the sensing element exceeds a preset interval (that is, when the pressure of the inner cavity is lower than a preset low-pressure threshold or higher than a preset high-pressure threshold), where the alarm signal includes a flashing indicator light, a buzzer sound, or a text prompt, so as to prompt a medical worker to adjust the administration pressure in time.
The slow release tube 3 is preferably made of medical hydrophilic and hydrophobic nano composite materials, specifically, the medical hydrophilic and hydrophobic nano composite materials comprise one of fluorine-containing macromolecules and polyurethane, and the aperture of a permeation hole on the slow release membrane is 1-100 nm.
Preferably, the medicine storage bag 2 is connected with the medicine injection tube 1 through a connecting tube 22, and the connecting tube 22 has flexibility, which can facilitate the operation control of the controller 5 by medical staff.
Preferably, the medicine storage bag 2 is detachably connected with the medicine injection tube 1, so that the application of the indwelling tube is more convenient and flexible; and/or the medicine injection tube 1 and the slow release tube 3 are connected into a whole to prevent the liquid medicine from leaking at the joint. Further, the connecting pipe 22 and the drug injection pipe 1 are detachably connected through an adapter 21.
Preferably, the continuous slow-release drug delivery indwelling tube with the slow-release tube and the controller further comprises a puncture outer sheath 4, wherein the puncture outer sheath 4 is provided with a hollow lumen, and the drug injection tube 1 passes through the hollow lumen; and/or the slow release tube 3 passes through the hollow lumen, and preferably, the puncture sheath 4 is provided with a sheath core to facilitate the puncture process.
As a more preferable embodiment, the periphery of the slow release tube 3 may be optionally sleeved with a slow release positioning film sleeve (not shown in the figure), the slow release positioning film sleeve outside the through hole can prevent the liquid medicine in the slow release tube 3 from seeping out, and the through hole can allow the liquid medicine in the slow release tube 3 to seep out, so that the liquid medicine seeping out from the slow release tube 3 can be positioned, and the slow release positioning film sleeve is suitable for the situation that the continuous administration is required for some point-like focuses.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a keep somewhere pipe in succession slowly-releasing dosing with slowly-releasing pipe and controller which characterized in that, includes injection tube (1), slowly-releasing pipe (3), controller (5), the axial one end of slowly-releasing pipe (3) is sealed, the axial other end of slowly-releasing pipe (3) with the export through connection of injection tube (1), the access connection of injection tube (1) has medicine storage bag (2), medicine storage bag (2) are in controller (5), controller (5) are configured as and can adjust medicine storage bag (2) will with predetermineeing injection pressure or injection speed with the liquid medicine in medicine storage bag (2) is forced out, the liquid medicine gets into injection tube (1) and via the pipe wall of slowly-releasing pipe (3) oozes to its outside.
2. The continuous sustained-release drug delivery indwelling tube with the sustained-release tube and the controller according to claim 1, wherein the sustained-release tube (3) is made of medical hydrophilic and hydrophobic nano composite material.
3. The continuous sustained-release drug delivery indwelling tube with the sustained release tube and the controller according to claim 2, wherein the medical hydrophilic and hydrophobic nanocomposite comprises one of fluoropolymer and polyurethane.
4. The continuous sustained-release drug delivery indwelling tube with the sustained-release tube and the controller according to claim 1, wherein the drug storage bag (2) is connected with the drug injection tube (1) through a connecting tube (22); or the connecting pipe (22) and the medicine injection pipe (1) are detachably connected, and/or the medicine injection pipe (1) and the slow release pipe (3) are connected into a whole.
5. The continuous slow-release drug delivery indwelling tube with the slow-release tube and the controller according to claim 4, wherein the connection tube (22) is detachably connected with the drug injection tube (1) through an adapter (21).
6. The indwelling catheter for continuous sustained release drug delivery with a sustained release tube and a controller according to any one of claims 1 to 5, further comprising a puncture outer sheath (4), the puncture outer sheath (4) having a hollow lumen, the drug injection tube (1) passing through the hollow lumen; and/or the slow release tube (3) passes through the hollow tube cavity.
7. The continuous sustained release drug delivery indwelling tube having a sustained release tube and a controller according to claim 6, wherein the penetrating outer sheath (4) has an outer sheath core thereon.
8. The continuous sustained-release drug delivery indwelling tube having the sustained-release tube and the controller according to any one of claims 1 to 5, wherein a display screen (51) is provided on the controller (5); and/or the controller (5) is provided with an adjusting button (52).
9. The continuous slow-release drug administration indwelling tube with the slow-release tube and the controller according to claim 8, wherein a sensing element is further arranged in the controller (5), the sensing element is used for detecting the inner cavity pressure of the drug storage bag (3), and the obtained inner cavity pressure signal is processed by a core operation element in the controller (3) and then transmitted and displayed on the display (51); and/or the acquired inner cavity pressure signal is operated by a core operation element in the controller (3) to acquire the residual medicine quantity in the medicine storage bag (3), and the acquired residual medicine quantity is transmitted and displayed on the display (51).
10. The continuous sustained-release drug delivery indwelling tube having a sustained release tube and a controller according to claim 9, wherein the controller (5) further comprises an alarm device for giving an alarm signal when the pressure of the inner cavity of the drug storage capsule (3) obtained by the sensing element exceeds a preset interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187910.7A CN112169067A (en) | 2020-10-29 | 2020-10-29 | Continuous slow-release drug administration indwelling tube with slow-release tube and controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187910.7A CN112169067A (en) | 2020-10-29 | 2020-10-29 | Continuous slow-release drug administration indwelling tube with slow-release tube and controller |
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| Publication Number | Publication Date |
|---|---|
| CN112169067A true CN112169067A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011187910.7A Pending CN112169067A (en) | 2020-10-29 | 2020-10-29 | Continuous slow-release drug administration indwelling tube with slow-release tube and controller |
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| CN (1) | CN112169067A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374566A (en) * | 2005-08-31 | 2009-02-25 | I-弗劳公司 | Anti-microbial catheter |
| CN105617511A (en) * | 2016-03-09 | 2016-06-01 | 复旦大学附属金山医院 | Non-deforming continuous peripheral nerve blocking indwelling catheter |
| CN206381223U (en) * | 2016-10-14 | 2017-08-08 | 核工业总医院 | Manadesma blocks ultrasonic puncture pin |
| CN109464722A (en) * | 2018-11-14 | 2019-03-15 | 山东大学 | A kind of active pressure formula Intelligent transfusion apparatus, transfusion control system and control method |
| CN210009404U (en) * | 2019-04-08 | 2020-02-04 | 大理大学第一附属医院 | Improvement type glaucoma aqueous humor drainage tube |
| CN211068565U (en) * | 2019-08-14 | 2020-07-24 | 复旦大学附属眼耳鼻喉科医院 | Tracheotomy sleeve capable of slowly releasing medicine |
-
2020
- 2020-10-29 CN CN202011187910.7A patent/CN112169067A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374566A (en) * | 2005-08-31 | 2009-02-25 | I-弗劳公司 | Anti-microbial catheter |
| CN105617511A (en) * | 2016-03-09 | 2016-06-01 | 复旦大学附属金山医院 | Non-deforming continuous peripheral nerve blocking indwelling catheter |
| CN206381223U (en) * | 2016-10-14 | 2017-08-08 | 核工业总医院 | Manadesma blocks ultrasonic puncture pin |
| CN109464722A (en) * | 2018-11-14 | 2019-03-15 | 山东大学 | A kind of active pressure formula Intelligent transfusion apparatus, transfusion control system and control method |
| CN210009404U (en) * | 2019-04-08 | 2020-02-04 | 大理大学第一附属医院 | Improvement type glaucoma aqueous humor drainage tube |
| CN211068565U (en) * | 2019-08-14 | 2020-07-24 | 复旦大学附属眼耳鼻喉科医院 | Tracheotomy sleeve capable of slowly releasing medicine |
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