CN108969809A - A kind of ventilator bend pipe sputum aspirator of anti-respiratory tract injury - Google Patents
A kind of ventilator bend pipe sputum aspirator of anti-respiratory tract injury Download PDFInfo
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- CN108969809A CN108969809A CN201810628663.6A CN201810628663A CN108969809A CN 108969809 A CN108969809 A CN 108969809A CN 201810628663 A CN201810628663 A CN 201810628663A CN 108969809 A CN108969809 A CN 108969809A
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- Prior art keywords
- negative pressure
- sputum aspirator
- sputum
- ventilator
- aspirator tube
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- A61M1/0023—
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- A61M1/0001—
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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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- 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
- A61M2205/07—General characteristics of the apparatus having air pumping 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
-
- 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
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a kind of ventilator bend pipe sputum aspirators of anti-respiratory tract injury, including sputum aspirator tube, the negative pressure end cap of sputum aspirator tube sets negative pressure buffer body, the negative pressure buffer body circumferentially between set negative pressure mouth and buffer air bag, and at least one negative pressure mouth is corresponding with the sputum suction hole on sputum aspirator tube.The sputum aspirator has the negative pressure buffer body that can protect respiratory mucosa, which really realizes the protection to respiratory mucosa by the negative pressure mouth and buffer air bag of construction.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of ventilator bend pipe of anti-respiratory tract injury is filled with suction sputum
It sets.
Background technique
Trachea cannula or the patient for implementing tracheotomy, normal cough mechanism are destroyed, and cannot actively pass through itself
It spits, endotracheal suction (ets) can help patient to remove the various secretion that respiratory tract generates.Sputum aspirator tube commonly used in the prior art is more
Using front top aperture, rear end connects sputum aspirator by three-way connection, and three-way connection is equipped with and is provided with side opening, and is stamped glue
Plug；Rubber plug is opened after suction sputum operation and lays down negative pressure in pipe, to avoid because of the excessive injured patient's respiratory tract inner wall mucous membrane of negative pressure.
Currently, carrying out suction sputum operation using above-mentioned sputum aspirator tube in clinic, have the following deficiencies: that (1) sputum aspirator tube top is opened
Hole, when being inserted into patient airway, the end of sputum aspirator tube easily scratches the tracheae tube wall of patient, and during suction sputum, once suction sputum
Pipe end hole plug or close to inner surface of trachea, then the negative pressure in sputum aspirator tube increases (internal pressure reduction), causes sputum aspirator tube further
It is close to inner surface of trachea, inner surface of trachea is caused to damage；Some sputum aspirator tube products are in sputum aspirator tube front end side openings, due to the center in hole
Line is vertical with sputum aspirator tube axis, is still difficult to avoid that the near-wall air curtain of sputum aspirator tube；(2) insertion depth of sputum aspirator tube is mostly with medical care
The experience of personnel controls, nursing staff not abundant for clinical experience, and tube body insertion depth is not easy to control when suction sputum operates, and makes
At the damage of sufferer tracheae tube wall；(3) sputum aspirator tube is connect with sputum aspirator by three-way connection, which is equipped with the side of pressure release
Hole, three-way connection side opening is closed by rubber plug when suction sputum, after suction sputum operates, is opened rubber plug and is laid down negative pressure in sputum aspirator tube；But
In actual clinical operation, it occur frequently that phenomena such as suction sputum tube hole plug, sputum aspirator tube are close to inner surface of trachea, once there is the phenomenon
(being mixed with the trace of blood in the sputum being sucked out), medical staff need to open threeway side opening rubber plug immediately, manage interior negative pressure at this time and all unload
Fall, and operation medical staff needs both hands to operate, it is cumbersome, slow；Therefore, many medical staff are in order to reduce the wound to patient
Evil mitigates sufferer pain, and the rubber plug of threeway side opening is opened during suction sputum, directly presses with finger negative in hole formation pipe
Pressure opens threeway relief hole balance pipe external and internal pressure, and be repeated as many times and pressed when encountering sputum aspirator tube close to tracheal wall at once
Operation is until suction sputum terminates.The shortcomings that this practice, is: when medical staff pine is from finger, the medical worker under suction function in pipe
Emgloves be still adsorbed, keep the variation of pipe external and internal pressure slow, or even emgloves torn；Sputum, droplet are connected from three
The side opening of head sprays, very big to medical staff's health effect since there are a large amount of germs in sputum, and the hand of medical staff
Refer to that the bacterium carried on (emgloves) also can infected patient.Disadvantage is in addition, when more patient's sputum, if medical staff's suction sputum is not
In time, sputum is pressed into intrapulmonary with air pressure by ventilator pressure, and air flue is be easy to cause to block, asphyxia, the risks such as infection.This device can
Achieve the effect that automatic suction sputum, suction sputum time and period can be set.
Summary of the invention
For the defects in the prior art and insufficient, the present invention provides a kind of ventilator bend pipe of anti-respiratory tract injury use
Sputum aspirator, the sputum aspirator have the negative pressure buffer body that can protect respiratory mucosa, which passes through the negative of construction
Pressure mouth and buffer air bag really realize the protection to respiratory mucosa.
In order to achieve the above objectives, the technical scheme adopted by the invention is as follows:
A kind of ventilator bend pipe sputum aspirator of anti-respiratory tract injury, including sputum aspirator tube, the negative pressure end cap of sputum aspirator tube are set
Negative pressure buffer body, the negative pressure buffer body circumferentially between set at least one negative pressure mouth and at least one buffer air bag, and at least
One negative pressure mouth is corresponding with the sputum suction hole on sputum aspirator tube.
Optionally, the negative pressure buffer body and the axially opposed movement of sputum aspirator tube.
Optionally, further include dynamic component, the dynamic component includes draught line and motor 4-2, draught line respectively with
Sputum aspirator tube is connected with negative pressure buffer body, and negative pressure buffer body and sputum aspirator tube are along the axial relative motion carried out back and forth.
Optionally, the negative pressure buffer body is cylindrical hollow unit, and is equipped at the both ends of negative pressure buffer body
Cushion collar.
Optionally, the setting cleaning buffering bristle on the inner wall of the negative pressure buffer body.
Optionally, uniformly distributed multiple sputum suction holes on the tube body at the negative pressure end of the sputum aspirator tube.
Optionally, multiple stop collar 2-2 are laid along axial on the tube body at the negative pressure end of the sputum aspirator tube.
Optionally, spacing head is set on the negative pressure end of the sputum aspirator tube, and the spacing head is to buffer greater than negative pressure
The cavity of internal diameter expands body.
It optionally, further include sputum bottle, the sputum bottle is connected to the sputum aspirator tube.
Optionally, further include control cabinet, dynamic component is set in the control cabinet, and also sets up negative pressure in control cabinet
Pump, negative pressure pump are connected to the sputum bottle.
Advantages of the present invention are as follows:
The sputum aspirator has the negative pressure buffer body that can protect respiratory mucosa, the negative pressure which passes through construction
Mouth and buffer air bag really realize the protection to respiratory mucosa.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the ventilator bend pipe sputum aspirator of anti-respiratory tract injury of the invention；
Fig. 2 is the schematic enlarged-scale view of Fig. 1；
Fig. 3 is the schematic enlarged-scale view of sputum aspirator tube；
Fig. 4 is the longitudinal sectional view of Fig. 2；
Each label indicates in figure are as follows: 1- negative pressure buffer body 1,1-1 negative pressure mouth, 1-2 buffer air bag, 1-3 cushion collar, 1-4 are clear
Clean buffering bristle 1-4,2- sputum aspirator tube, 2-1 spacing head, 2-2 stop collar, 2-3 sputum suction hole, 3- sputum bottle, 4- control cabinet, 4-1 are negative
Press pump, 4-2 motor, 4-3 draught line, 4-4 negative tube.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " up, down, left, right, before and after " is logical
Often correspond to the up, down, left, right, before and after of vehicle, wherein " upper and lower " to correspond to vertical direction or short transverse, " left and right "
Corresponding to transverse direction, wherein " ascending, descending " refers to the movement of corresponding component in the vertical direction upward or downward.But it is above-mentioned
The noun of locality is only used for the explanation and illustration disclosure, is not limited to.
In conjunction with Fig. 1-4, the ventilator bend pipe sputum aspirator of the anti-respiratory tract injury of the disclosure, including sputum aspirator tube 2, suction sputum
The negative pressure end cap of pipe 2 sets negative pressure buffer body 1, negative pressure buffer body 1 circumferentially between set at least one negative pressure mouth 1-1 and at least one is slow
Air-impulse bag 1-2, and at least one negative pressure mouth 1-1 is corresponding with the sputum suction hole on sputum aspirator tube 2.The negative pressure buffer body 1 newly established, setting
There are negative pressure mouth 1-1 and buffer air bag 1-2, negative pressure mouth 1-1 is corresponding with the sputum suction hole on sputum aspirator tube 2, is guaranteeing the suction of 2 negative pressure of sputum aspirator tube
The function of phlegm simultaneously, reduces sputum aspirator tube 2 by buffer air bag 1-2 and is adjacent to respiratory mucosa, realize to respiratory mucosa
Protection, and the negative pressure mouth 1-1 set and buffer air bag 1-2 realizes comprehensive protection, and not by sputum suction hole 2-3 on sputum aspirator tube 2
The limitation of position, can not change the original structure of sputum aspirator tube 2 and can be realized and be applicable.
In addition, in embodiment of the disclosure, negative pressure buffer body 1 and the axially opposed movement of sputum aspirator tube 2, sputum aspirator tube 2 exist
It is usually all static state when placement in patient respiration road, it is believed that this static state is to the viscous of the respiratory tract of patient
The protecting effect of film is best, but this is that usual medical staff thinks as a result, in practical applications, when long due to sputum aspirator tube 2
Between be placed on the surface of respiratory mucosa, even negative pressure does not suck adherent damage, and prolonged place can also allow suction
Phlegm pipe 2 or the negative pressure buffer body 1 newly established are adhered with respiratory mucosa, and certain damage still can be caused to mucous membrane；Therefore,
By observe for a long time with specific clinical test, inventors have found that movement by a small margin or movement not only will not be to breathings
Road mucous membrane generates secondary damage, while negative pressure state when moving can also improve suction sputum effect, expands suction sputum area, practical application
Effect is more preferable, but needs to control the speed of sputum aspirator tube 2 Yu 1 relative motion of negative pressure buffer body, for example, the speed of relative motion is most
Fortunately 0.1~0.5mm/s.Suction sputum time and suction sputum resting period can be set, simultaneously according to the difference of the sputum amount of different patients
Cooperate the relative motion between sputum aspirator tube and negative pressure buffer body to realize automatic intermittent suction sputum, while protecting respiratory mucosa can and
When carry out patient respiration road in sputum quick suction.
According to the technology contents of the disclosure, sputum aspirator tube 2 and the relative motion of negative pressure buffer body 1 are controlled by dynamic component
System, dynamic component includes draught line 4-3 and motor, and draught line 4-3 is connect with sputum aspirator tube 2 and negative pressure buffer body 1 respectively, passes through electricity
Rotating and reverse for machine realizes negative pressure buffer body 1 and sputum aspirator tube 2 along the axial relative motion carried out back and forth, for example, such as institute in figure
Show, one end of draught line 4-3 is fixedly connected with negative pressure buffer body 1, and draught line 4-3 can select the steel wire with certain degree of hardness
Line, draught line 4-3 pass through 2 tube wall of sputum aspirator tube, the roller bearing that motor rotates, are then passed through the tube wall of sputum aspirator tube 2 and the negative pressure of sputum aspirator tube 2
The top at end connects, and passes through the relative motion for rotating and reverse realization negative pressure buffer body 1 and sputum aspirator tube 2 of motor.
In addition, in embodiment of the disclosure, negative pressure buffer body 1 is cylindrical hollow unit, and in negative pressure buffer body 1
Both ends be equipped with cushion collar 1-3, for example cushion collar 1-3 is the sealing shroud of soft rubber material, by negative pressure buffer body 1 and is inhaled
Gap cladding between phlegm pipe 2, it is certain that soft sealing shroud not only gives the relative motion of sputum aspirator tube 2 and negative pressure buffer body 1 to provide
Cushion effect, both be further reduced the speed of relative motion, while negative pressure buffer body 1 can also be protected to avoid contacting with sputum,
It also can be reduced the corner angle that negative pressure buffer body 1 is exposed to outside, further protect mucous membrane.
In addition, in embodiment of the disclosure, setting cleaning buffering bristle 1-4, best on the inner wall of negative pressure buffer body 1
Cleaning buffering bristle 1-4 be arranged on the inner wall of the corresponding negative pressure buffer body 1 of buffer air bag 1-2, cleaning buffering bristle 1-4 not
The speed of related movement between sputum aspirator tube 2 and negative pressure buffer body 1 only can be further limited, meanwhile, bristle can also be to suction sputum
Sputum suction hole 2-3 on pipe 2 carries out friction back and forth, and certain cleaning is carried out to suction sputum mouth, avoids sputum suction hole 2-3 in suction sputum process
In blocking or sputum a small amount of residual, the further suction sputum efficiency for improving sputum aspirator tube 2, moreover it is possible to reduce inhale to a certain extent
The phlegm time realizes further protection.
In embodiment of the disclosure, sputum aspirator tube 2 can use the structure of sputum aspirator tube 2 in the prior art, it is also possible that
Uniformly distributed multiple sputum suction hole 2-3, such structure are able to cooperate negative pressure buffer body 1 each on the tube body at the negative pressure end of sputum aspirator tube 2
A orientation can have sputum suction hole 2-3 corresponding with negative pressure mouth 1-1, facilitate application.
In addition, since sputum aspirator tube 2 and negative pressure buffer body 1 are there is also at a distance from certain relative motion, it is slow in no negative pressure
When rushing the protection of body 1, multiple stop collar 2-2 can also be laid along axial on the tube body at the negative pressure end of sputum aspirator tube 2, interval is certain
Distance, such sputum aspirator tube 2 realizes a degree of suction when no negative pressure suction sputum body is protected, through the barrier of stop collar 2-2
Phlegm hole is isolated with respiratory mucosa, in addition, the setting of stop collar 2-2 further slows down sputum aspirator tube 2 and negative pressure buffer body 1
The speed of relative motion.
In addition, in order to avoid the continuity and safety of sputum aspirator tube 2 and 1 relative motion of negative pressure buffer body, in sputum aspirator tube 2
Spacing head 2-1 is set on negative pressure end, and spacing head 2-1 expands body, limitation negative pressure buffering for the cavity greater than 1 internal diameter of negative pressure buffer body
Body 1 avoids the separation of sputum aspirator tube 2 Yu negative pressure buffer body 1, and draught line 4-3 can be fixed in inner cavity and the top of spacing head 2-1
The relative motion of the certain distance of sputum aspirator tube 2 and negative pressure buffer body 1 is realized in connection.
It further include sputum bottle 3 and control cabinet 4, sputum bottle 3 is connected to sputum aspirator tube 2, and sputum bottle can carry out in time more after being filled
It changes, dynamic component is set in control cabinet 4, and also sets up negative pressure pump 4-1 in control cabinet 4, negative pressure pump 4-1 passes through negative tube 4-4
It is connected to sputum bottle 3.The power of offer sputum aspirator tube 2 and 1 relative motion of negative pressure buffer body that dynamic component can continue, negative pressure pump
The negative pressure pump of interval can be set into 4-1, per negative pressure suction sputum of progress at regular intervals.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of ventilator bend pipe sputum aspirator of anti-respiratory tract injury, including sputum aspirator tube (2), which is characterized in that sputum aspirator tube
(2) negative pressure end cap is set negative pressure buffer body (1), the negative pressure buffer body (1) circumferentially between set at least one negative pressure mouth (1-1)
With at least one buffer air bag (1-2), and at least one negative pressure mouth (1-1) is corresponding with sputum suction hole (2-3) on sputum aspirator tube (2).
2. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1, which is characterized in that described
Negative pressure buffer body (1) and sputum aspirator tube (2) axially opposed movement.
3. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1, which is characterized in that further include
Dynamic component, the dynamic component include draught line (4-3) and motor (4-2), draught line (4-3) respectively with sputum aspirator tube (2)
It is connected with negative pressure buffer body (1), negative pressure buffer body (1) and sputum aspirator tube (2) are along the axial relative motion carried out back and forth.
4. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
The negative pressure buffer body (1) is cylindrical hollow unit, and is equipped with cushion collar (1- at the both ends of negative pressure buffer body (1)
3)。
5. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
Setting cleaning buffering bristle (1-4) on the inner wall of the negative pressure buffer body (1).
6. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
Uniformly distributed multiple sputum suction holes (2-3) on the tube body at the negative pressure end of the sputum aspirator tube (2).
7. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
Multiple stop collars (2-2) are laid along axial on the tube body at the negative pressure end of the sputum aspirator tube (2).
8. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
Spacing head (2-1) is set on the negative pressure end of the sputum aspirator tube (2), the spacing head (2-1) is greater than negative pressure buffer body
(1) cavity of internal diameter expands body.
9. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 1,2 or 3, which is characterized in that
It further include sputum bottle (3), the sputum bottle (3) is connected to the sputum aspirator tube (2).
10. the ventilator bend pipe sputum aspirator of anti-respiratory tract injury according to claim 9, which is characterized in that also wrap
It includes control cabinet (4), dynamic component is set in the control cabinet (4), and (4) also set up negative pressure pump (4-1) in control cabinet, bear
Press pump (4-1) is connected to the sputum bottle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628663.6A CN108969809B (en) | 2018-06-19 | 2018-06-19 | Prevent respiratory track damage's breathing machine return bend with inhaling phlegm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628663.6A CN108969809B (en) | 2018-06-19 | 2018-06-19 | Prevent respiratory track damage's breathing machine return bend with inhaling phlegm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108969809A true CN108969809A (en) | 2018-12-11 |
| CN108969809B CN108969809B (en) | 2022-03-22 |
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ID=64540614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810628663.6A Active CN108969809B (en) | 2018-06-19 | 2018-06-19 | Prevent respiratory track damage's breathing machine return bend with inhaling phlegm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108969809B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621020A (en) * | 2018-12-12 | 2019-04-16 | 河南科技大学第附属医院 | A kind of rotatable hospital handheld sputum aspirator of sputum aspirator tube |
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| CN2659448Y (en) * | 2003-12-09 | 2004-12-01 | 邹学冬 | Multipurous sputum sucking tube for new-born |
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| CN206151953U (en) * | 2016-07-26 | 2017-05-10 | 孙大宏 | Paediatric phlegm suction tube |
| CN107982622A (en) * | 2017-12-27 | 2018-05-04 | 安徽医科大学第附属医院 | A kind of Multifunctional sputum aspirator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3015399A1 (en) * | 1980-04-22 | 1981-10-29 | B. Braun Melsungen Ag, 3508 Melsungen | Suction catheter - with suction holes between surface bulges on a hose attachment to the distal end |
| CN2659448Y (en) * | 2003-12-09 | 2004-12-01 | 邹学冬 | Multipurous sputum sucking tube for new-born |
| CN2776410Y (en) * | 2004-12-28 | 2006-05-03 | 张延涛 | Grid net type isolation antiblocking negative pressure drain pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621020A (en) * | 2018-12-12 | 2019-04-16 | 河南科技大学第附属医院 | A kind of rotatable hospital handheld sputum aspirator of sputum aspirator tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108969809B (en) | 2022-03-22 |
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