CN207384580U - A kind of negative pressure catheter - Google Patents
A kind of negative pressure catheter Download PDFInfo
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- CN207384580U CN207384580U CN201720430054.0U CN201720430054U CN207384580U CN 207384580 U CN207384580 U CN 207384580U CN 201720430054 U CN201720430054 U CN 201720430054U CN 207384580 U CN207384580 U CN 207384580U
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- cavity
- processing chamber
- negative pressure
- tube
- pressure catheter
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Abstract
The utility model discloses a kind of negative pressure catheter, including passing sequentially through drainage tube（5）The check (non-return) valve of connection（1）, pressure reducing valve（2）, processing chamber（3）And connector（4）, the drainage tube（5）It is equipped with pipe clamp（5‑1）；The processing chamber（3）For the processing chamber of medical grade rubber material, the processing chamber（3）It is equipped with processing chamber liquid inlet（3‑1）With processing chamber liquid outlet（3‑2）, the processing chamber liquid inlet（3‑1）With processing chamber liquid outlet（3‑2）Place is equipped with processing chamber counterflow-preventing device（3‑3）, the processing chamber（3）It is equipped with level-one negative pressure ventilation connecting tube（3‑4）, sample tap（3‑5）Or liquid injection port.The negative pressure catheter of the utility model is reasonable in design, by setting processing chamber, can take into account suction pressure and the comfort level problem of patient, overall effect is good, meets requirement.
Description
Technical field
The utility model is related to medical instruments fields, and in particular to a kind of negative pressure catheter.
Background technology
After patient's operation now, in order to avoid wound inflammation and cross-infection, negative pressure continuous drainage need to be carried out to the surface of a wound, born
It needs to use negative pressure catheter when pressing continuous drainage.Negative pressure continuous drainage enough accelerates the blood circulation of wound site, remarkably promotes new
Angiogenic enters the surface of a wound, stimulates the growth of granulation tissue, fully drains, and mitigates oedema, reduces pollution, inhibits bacteria growth, energy
It is enough directly to accelerate wound healing or repair for operation to create conditions.During negative pressure treatment, negative pressure can be by the exudate of the surface of a wound timely
Attraction is fallen, and can change a medicine everyday at least three, with wound healing is fast, infection rate is low, more change dressings number is few, antimicrobial
Object is used less, reduced the features such as medical expenses, energy accelerating wound healing, reduces the expenditure of medical expenses.
However existing negative pressure catheter structure design is unreasonable, negative pressure drainage effect is poor, influences therapeutic effect.
The content of the invention
Problem to be solved in the utility model is to overcome the shortcomings of negative pressure catheter in the prior art, provides a kind of structure and sets
The negative pressure catheter that meter is reasonable, negative pressure drainage effect is good.
To solve the above-mentioned problems, a kind of negative pressure catheter of the utility model, including passing sequentially through stopping for drainage tube connection
Inverse valve, pressure reducing valve, processing chamber and connector, the drainage tube are equipped with pipe clamp；The processing chamber is the processing of medical grade rubber material
Chamber, the processing chamber are equipped with processing chamber liquid inlet and processing chamber liquid outlet, the processing chamber liquid inlet and processing chamber
Liquid outlet is equipped with processing chamber counterflow-preventing device, and the processing chamber is equipped with level-one negative pressure ventilation connecting tube, sample tap or fluid injection
Mouthful.
As further improvement of the utility model, the check (non-return) valve includes negative pressure catheter and non-return valve chamber, attracts to lead
Manage oblique be arranged in non-return valve chamber；The non-return valve chamber is by the first flat segments cavity, the second flat segments cavity and arranged on
Conical section cavity composition between one flat segments cavity and the second flat segments cavity, the first flat segments cavity are equipped with connection
Screw thread layer, the connection screw thread layer include U-shaped cavity body and the connection screw thread arranged on U-shaped cavity inner wall, the connection screw thread layer with
Drainage tube end is fixed by connection screw thread；Negative pressure catheter includes position-limiting tube, connecting tube, shunts screen casing and arranged on shunting screen casing end
The anti-reverse cone-shaped tube in portion；The position-limiting tube, connecting tube and shunt screen casing outer diameter ratio be：1:3:4-4.5.
As further improvement of the utility model, the second flat segments cavity end is equipped with limit plug, the positioning
Rotation recessing groove is equipped with beyond the Great Wall, the shunting screen casing tube wall is externally provided with positive stop strip, and the positive stop strip is adapted with rotation recessing groove,
Screen casing is oblique is arranged in the second flat segments cavity for the shunting, and the shunting screen casing is set with the second flat segments cavity into 25-75 ° of angle
It puts.
As further improvement of the utility model, the position-limiting tube, connecting tube and shunt screen casing outer diameter or internal diameter according to
Secondary increase；The connecting tube is equipped with the connecting tube that at least three sections of internal diameters successively increase；Annular cone is arranged with outside the position-limiting tube to inhale
Draw cover, the shunting screen casing includes shunting screen casing body and several shunting conical pipes in body, the shunting conical pipe edge
To the direction of anti-reverse cone-shaped tube, its pipe wall internal diameters is gradually reduced connecting tube, and the annular cone attracts ring of the cover for medical grade rubber material
Shape cone attracts cover；The material of the negative pressure catheter and non-return valve chamber is medical grade rubber or silicone rubber material；Level-one negative pressure ventilation
Filter device is equipped at connecting tube.It shunts conical pipe and is equipped at least five.
As further improvement of the utility model, the pressure reducing valve includes decompression cavity and the tune on decompression cavity
Whole device, the decompression cavity include decompression shell cavity and are the flexible cavities of several fonts arranged on decompression shell cavity inner section,
Arranged on the liquid inlet of flexible cavity one end and the liquid outlet of the other end, the liquid inlet and liquid outlet and drainage tube phase
Adaptation, the adjuster include the rotational shell that section is convex shape；The rotational shell passes through second with decompression shell cavity
Connection screw thread adjusts relative position relation, and rotational shell inside upper surface is connected with briquetting by flexible connector；The briquetting
It moves reciprocatingly with rotational shell compared with decompression shell cavity；The epicoele face paste of the briquetting and flexible cavity, which is closed, to be set.
As further improvement of the utility model, the decompression shell cavity is rounded cuboid, depressurizes shell cavity
Corresponding liquid inlet and liquid outlet are equipped with opening；The rotational shell is equipped with offset protrusion；The adjuster and decompression cavity
Height ratio be 3.2:1；Second connection screw thread is equipped with limit protrusion；The liquid inlet and liquid outlet and drainage tube
It is connected through a screw thread or Rule pipe connects.
As further improvement of the utility model, the processing chamber is that section is circular processing chamber, the processing
The diameter of chamber and the diameter ratio of drainage tube are 1:6-7.
As further improvement of the utility model, the drainage tube is equipped with several pipe clamps.
The utility model has the following advantages compared with prior art.
The negative pressure catheter of the utility model is reasonable in design, sets gradually check (non-return) valve by being arranged on drainage tube, subtracts
Pressure valve and processing chamber can avoid adverse current occur during drainage；Existing negative pressure continuous drainage is general only to be set in drainage tube one end
Drainage bottle connection negative pressure generator, the comfort level that cannot take into account suction pressure and patient well there are pressure during drainage asks
Topic, the processing chamber of the utility model can connect negative pressure generator, so as to set the pressure at wound to processing chamber smaller, subsequently
The pressure of negative pressure generator of negative pressure bottle connection can increase, so as to reasonably distribute.Or processing chamber is provided with sample tap, just
In medical staff to the liquid Real Time Observation or sample examination of the drainage of patient's wound；Liquid injection port can be used for injecting mucolysis
Agent avoids vacuum suction effect excessively poor, such as ambroxol.Processing chamber is equipped in processing chamber liquid inlet and processing chamber liquid outlet
Counterflow-preventing device can effectively avoid adverse current or adverse current caused by due to negative pressure difference, prevent the liquid for attracting from being created to wound
It causes to infect in face.
Since non-return valve chamber is by the first flat segments cavity, the second flat segments cavity and arranged on the first flat segments cavity and
Conical section cavity composition between two flat segments cavitys, the negative pressure catheter of check (non-return) valve include position-limiting tube, connecting tube, shunting screen casing and
Anti-reverse cone-shaped tube arranged on shunting screen casing end, check (non-return) valve it is reasonable in design, all parts cooperate, and pass through cavity knot
The structure design of structure and negative pressure catheter, ensures non-return effect, and the shape design of all parts meets the design of anti-reverse-filling.Due to
First flat segments cavity is equipped with connection screw thread layer, and connection screw thread layer includes U-shaped cavity body and the connection spiral shell arranged on U-shaped cavity inner wall
Line, connection screw thread layer are fixed with drainage tube end by connection screw thread；So as to ensure that the matching relationship of check (non-return) valve all parts is steady
It is fixed.Since the second flat segments cavity end is equipped with limit plug, limit plug is equipped with rotation recessing groove, and shunting screen casing tube wall is externally provided with
Positive stop strip, positive stop strip are adapted with rotation recessing groove, are further stably connected with；It is straight that second is arranged on since shunting screen casing is oblique
In section cavity, shunt screen casing and the second flat segments cavity is set into 25-75 ° of angle, the setting of angle and position is further at this time
Avoid adverse current.Since position-limiting tube, the outer diameter of connecting tube and shunting screen casing or internal diameter are sequentially increased；Connecting tube is equipped at least three sections
The connecting tube that footpath successively increases can preferably avoid adverse current, so as to preferably non-return.Due to being arranged with annular cone outside position-limiting tube
Attract cover, setting and wound can be bonded, the stablizing for drainage tube stablized when the utility model is used uses.Since shunting is sieved
Pipe includes shunting screen casing body and several shunting conical pipes in body, shunts conical pipe along connecting tube to anti-reverse cone-shaped tube
Its pipe wall internal diameters of direction be gradually reduced, can avoid adverse current.Position-limiting tube, connecting tube and shunt screen casing outer diameter ratio be：1:3:
4-4.5.Global design ratio is more stable, better.At level-one negative pressure ventilation connecting tube cavity is avoided that equipped with filter device
The proliferation of germs that interior liquid generates is into air.
Due to setting pressure reducing valve, so as to be avoided that negative pressure drainage is excessive to the suction of wound, the feeling of pain of wound is caused, is made
Patient occurs uncomfortable；The complex structural designs of existing pressure reducing valve are unsuitable for industrialized production and promote the use of；This practicality is new
The decompression cavity of the pressure reducing valve of type and the adjuster on decompression cavity, decompression cavity include decompression shell cavity and arranged on subtracting
Pressure shell cavity inner section is the flexible cavity of several fonts；Adjuster includes the rotational shell that section is convex shape；Briquetting and rotation
Turn shell inside upper surface to be adapted；Rotational shell adjusts relative position by the second connection screw thread with decompression shell cavity and closes
System, rotational shell inside upper surface are connected with briquetting by flexible connector；The epicoele face paste of briquetting and flexible cavity, which is closed, to be set；
The utility model between rotational shell and decompression shell cavity by adjusting opposite distance by screw thread rotation, and briquetting is with rotation
Shell moves reciprocatingly compared with decompression shell cavity with the variation of distance, and briquetting is becoming the pressure that flexible cavity is given
Change, and the volume of flexible cavity is also changing, the pressure that the in vivo fluid of elastic cavity receives therewith is also different, so as to reach
The effect of pressure is adjusted, is mostly used for depressurizing.
Since decompression shell cavity is rounded cuboid, decompression shell cavity corresponds to liquid inlet and liquid outlet is equipped with and opens
Mouthful；Rotational shell is equipped with offset protrusion, and offset protrusion can be identified for that rotational shell moves reciprocatingly compared with decompression shell cavity
With the variation of distance, indicative function is given；The height ratio of adjuster and decompression cavity is 3.2:The 1 ratio lower structure is stablized,
Second connection screw thread is equipped with the pressure that limit protrusion is capable of /V adjustment.
Since processing chamber is that section is circular processing chamber, the diameter of processing chamber and the diameter ratio of drainage tube are 1:6-7
The processing cavity configuration using effect of the ratio is stablized.Drainage tube is equipped with several pipe clamps.Different number is set according to requirements
Pipe clamp.
Description of the drawings
Fig. 1 is the structure diagram of the utility model negative pressure catheter.
Fig. 2 is the structure diagram of the utility model check (non-return) valve.
Fig. 3 is the structure diagram of the utility model pressure reducing valve.
Fig. 4 is the utility model pressure reducing valve diagrammatic cross-section.
In figure：1- check (non-return) valves, 1-1 the first flat segments cavitys, 1-2 the second flat segments cavitys, 1-3 conical section cavitys, 1-4 connect
Connect screw thread layer, 1-5 position-limiting tubes, 1-6 connecting tubes, 1-7 shunting screen casings, the anti-reverse cone-shaped tubes of 1-8,1-9 limit plugs, 1-10 positive stop strips,
1-11 annular cones attract cover, 2- pressure reducing valves, 2-1 decompression shell cavities, 2-2 flexible cavities, 2-3 liquid inlets, 2-4 liquid discharges
Mouthful, 2-5 briquettings, 2-6 rotational shells, the second connection screw threads of 2-7,2-8 flexible connectors, 2-9 offset protrusions, 3- processing chambers, 3-1
Processing chamber liquid inlet, 3-2 processing chamber liquid outlets, 3-3 processing chamber counterflow-preventing devices, 3-4 level-one negative pressure ventilation connecting tubes, 3-5
Sample tap, 4- connector 5-1 pipe clamps.
Specific embodiment
The utility model negative pressure catheter is further explained with reference to the accompanying drawings and examples.
As shown in Figs 1-4, a kind of negative pressure catheter, check (non-return) valve 1, pressure reducing valve 2, place including passing sequentially through the connection of drainage tube 5
Chamber 3 and connector 4 are managed, drainage tube 5 is equipped with pipe clamp 5-1；Processing chamber 3 is the processing chamber of medical grade rubber material, and processing chamber 3 is equipped with
It is set at processing chamber liquid inlet 3-1 and processing chamber liquid outlet 3-2, processing chamber liquid inlet 3-1 and processing chamber liquid outlet 3-2
There is processing chamber counterflow-preventing device 3-3, processing chamber 3 is equipped with level-one negative pressure ventilation connecting tube 3-4, sample tap 3-5 or liquid injection port.Connector
It is used for later stage connection negative pressure bottle.
Check (non-return) valve 1 includes negative pressure catheter and non-return valve chamber, and negative pressure catheter is oblique to be arranged in non-return valve chamber；Non-return valve chamber
Body is by the first flat segments cavity 1-1, the second flat segments cavity 1-2 and arranged on the first flat segments cavity 1-1 and the second flat segments chamber
Conical section cavity 1-3 compositions between body 1-2, the first flat segments cavity are equipped with connection screw thread layer 1-4, connection screw thread layer 1-4
Including U-shaped cavity body and the connection screw thread arranged on U-shaped cavity inner wall, connection screw thread layer is consolidated with 5 end of drainage tube by connection screw thread
It is fixed；Negative pressure catheter includes position-limiting tube 1-5, connecting tube 1-6, shunts screen casing 1-7 and arranged on the anti-reverse tapered of shunting screen casing 1-7 ends
Pipe 1-8；The outer diameter ratio of position-limiting tube 1-5, connecting tube 1-6 and shunting screen casing 1-7 is：1:3:4-4.5.
Second flat segments cavity 1-2 ends are equipped with limit plug 1-9, and limit plug 1-9 is equipped with rotation recessing groove, shunts screen casing
1-7 tube walls are externally provided with positive stop strip 1-10, and positive stop strip 1-10 is adapted with rotation recessing groove, and shunting screen casing 1-7 is oblique to be arranged on second
In flat segments cavity 1-2, shunting screen casing 1-7 and the second flat segments cavity 1-2 is set into 25-75 ° of angle.
The outer diameter or internal diameter of position-limiting tube 1-5, connecting tube 1-6 and shunting screen casing 1-7 are sequentially increased；Connecting tube 1-6 is equipped with extremely
The connecting tube that few three sections of internal diameters successively increase；Annular cone is arranged with outside position-limiting tube 1-5 attracts cover 1-11, shunting screen casing 1-7 to include
Screen casing body and several shunting conical pipe 1-12 in body are shunted, shunt conical pipe 1-12 along connecting tube 1-6 to anti-reverse cone
Its pipe wall internal diameters of the direction of type pipe 1-8 are gradually reduced, and annular cone attracts the annular cone that cover 1-11 is medical grade rubber material to attract cover；
The material of negative pressure catheter and non-return valve chamber is medical grade rubber or silicone rubber material, and pressure reducing valve 2 includes decompression cavity and arranged on subtracting
The adjuster on cavity is pressed, decompression cavity includes decompression shell cavity 2-1 and is a few words arranged on decompression shell cavity 2-1 inner sections
The flexible cavity 2-2 of type, arranged on the liquid inlet 2-3 of the flexible cavity 2-2 one end and liquid outlet 2-4 of the other end, liquid enters
Mouth 2-3 and liquid outlet 2-4 is adapted with drainage tube 5, and adjuster includes the rotational shell 2-6 that section is convex shape；Rotation is outer
Shell 2-6 and decompression shell cavity 2-1 adjusts relative position relation, rotational shell 2-6 insides upper table by the second connection screw thread 2-7
Face is connected with briquetting 2-5 by flexible connector 2-8；Briquetting 2-5 is done with rotational shell 2-6 compared with decompression shell cavity 2-1
It moves back and forth；The epicoele face paste of briquetting 2-5 and flexible cavity 2-2, which is closed, to be set；
It is rounded cuboid to depressurize shell cavity 2-1, and decompression shell cavity 2-1 corresponds to liquid inlet 2-3 and liquid outlet
2-4 is equipped with opening；Rotational shell 2-6 is equipped with offset protrusion 2-9；The height ratio of adjuster and decompression cavity is 3.2:1；Second connects
Screw thread 2-7 is met equipped with limit protrusion；Liquid inlet 2-3 and liquid outlet 2-4 is connected through a screw thread with drainage tube 5 or Rule pipe
Connection.Processing chamber 3 is that section is circular processing chamber, and the diameter of processing chamber 3 is 1 with the diameter ratio of drainage tube 5:6-7.Drainage
Pipe 5 is equipped with several pipe clamp 5-1.
The above is the example and explanation of the utility model, but does not mean that the obtainable advantage of the utility model by this
It limits, it may be excellent to being realized in the simple transformation of structure, and/or some embodiments in every the utility model practice process
Wherein one or more of point are in the protection domain of the application.
Claims (8)
1. a kind of negative pressure catheter, it is characterised in that：Including passing sequentially through drainage tube（5）The check (non-return) valve of connection（1）, pressure reducing valve（2）、
Processing chamber（3）And connector（4）, the drainage tube（5）It is equipped with pipe clamp（5-1）；The processing chamber（3）For medical grade rubber material
Processing chamber, the processing chamber（3）It is equipped with processing chamber liquid inlet（3-1）With processing chamber liquid outlet（3-2）, the processing chamber
Liquid inlet（3-1）With processing chamber liquid outlet（3-2）Place is equipped with processing chamber counterflow-preventing device（3-3）, the processing chamber（3）On set
There is level-one negative pressure ventilation connecting tube（3-4）, sample tap（3-5）Or liquid injection port.
2. negative pressure catheter according to claim 1, it is characterised in that：The check (non-return) valve（1）Including negative pressure catheter and non-return
Valve chamber, negative pressure catheter is oblique to be arranged in non-return valve chamber；The non-return valve chamber is by the first flat segments cavity（1-1）, second
Flat segments cavity（1-2）With arranged on the first flat segments cavity（1-1）With the second flat segments cavity（1-2）Between conical section cavity
（1-3）Composition, the first flat segments cavity are equipped with connection screw thread layer（1-4）, the connection screw thread layer（1-4）Including U-shaped
Cavity and the connection screw thread arranged on U-shaped cavity inner wall, the connection screw thread layer and drainage tube（5）End is consolidated by connection screw thread
It is fixed；Negative pressure catheter includes position-limiting tube（1-5）, connecting tube（1-6）, shunting screen casing（1-7）With arranged on shunting screen casing（1-7）End
Anti-reverse cone-shaped tube（1-8）；The position-limiting tube（1-5）, connecting tube（1-6）With shunting screen casing（1-7）Outer diameter ratio be：1:3:4-
4.5。
3. negative pressure catheter according to claim 2, it is characterised in that：The second flat segments cavity（1-2）End is equipped with
Limit plug（1-9）, the limit plug（1-9）It is equipped with rotation recessing groove, the shunting screen casing（1-7）Tube wall is externally provided with positive stop strip
（1-10）, the positive stop strip（1-10）It is adapted with rotation recessing groove, the shunting screen casing（1-7）It is oblique to be arranged on the second flat segments
Cavity（1-2）It is interior, the shunting screen casing（1-7）With the second flat segments cavity（1-2）It is set into 25-75 ° of angle.
4. negative pressure catheter according to claim 2, it is characterised in that：The position-limiting tube（1-5）, connecting tube（1-6）With point
Flow screen casing（1-7）Outer diameter or internal diameter be sequentially increased；The connecting tube（1-6）Equipped with the connection that at least three sections of internal diameters successively increase
Pipe；The position-limiting tube（1-5）The outer annular cone that is arranged with attracts cover（1-11）, the shunting screen casing（1-7）Including shunting screen casing sheet
Body and several shunting conical pipes in body（1-12）, the shunting conical pipe（1-12）Along connecting tube（1-6）To anti-reverse cone
Type pipe（1-8）Its pipe wall internal diameters of direction be gradually reduced, it is described annular cone attract cover（1-11）For the annular of medical grade rubber material
Cone attracts cover；The material of the negative pressure catheter and non-return valve chamber is medical grade rubber or silicone rubber material.
5. negative pressure catheter according to claim 1, it is characterised in that：The pressure reducing valve（2）Including decompression cavity and it is arranged on
The adjuster on cavity is depressurized, the decompression cavity includes decompression shell cavity（2-1）With arranged on decompression shell cavity（2-1）It is interior
Section is the flexible cavity of several fonts（2-2）, arranged on flexible cavity（2-2）The liquid inlet of one end（2-3）With the liquid of the other end
Body exports（2-4）, the liquid inlet（2-3）And liquid outlet（2-4）With drainage tube（5）It is adapted, the adjuster includes
Section is the rotational shell of convex shape（2-6）；The rotational shell（2-6）With depressurizing shell cavity（2-1）Pass through the second connection
Screw thread（2-7）Adjust relative position relation, rotational shell（2-6）Inside upper surface passes through flexible connector（2-8）It is connected with pressure
Block（2-5）；The briquetting（2-5）With rotational shell（2-6）Compared with decompression shell cavity（2-1）It moves reciprocatingly；The pressure
Block（2-5）With flexible cavity（2-2）Epicoele face paste close set.
6. negative pressure catheter according to claim 5, it is characterised in that：The decompression shell cavity（2-1）It is rectangular for fillet
Body depressurizes shell cavity（2-1）Corresponding liquid inlet（2-3）And liquid outlet（2-4）Equipped with opening；The rotational shell（2-
6）Equipped with offset protrusion（2-9）；The height ratio of the adjuster and decompression cavity is 3.2:1；Second connection screw thread（2-7）
It is equipped with limit protrusion；The liquid inlet（2-3）And liquid outlet（2-4）With drainage tube（5）It is connected through a screw thread or Rule
Pipe connects.
7. negative pressure catheter according to claim 1, it is characterised in that：The processing chamber（3）It is that section is circular place
Manage chamber, the processing chamber（3）Diameter and drainage tube（5）Diameter ratio be 1:6-7.
8. negative pressure catheter according to claim 1, it is characterised in that：The drainage tube（5）It is equipped with several pipe clamps（5-
1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430054.0U CN207384580U (en) | 2017-04-24 | 2017-04-24 | A kind of negative pressure catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430054.0U CN207384580U (en) | 2017-04-24 | 2017-04-24 | A kind of negative pressure catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207384580U true CN207384580U (en) | 2018-05-22 |
Family
ID=62402012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720430054.0U Active CN207384580U (en) | 2017-04-24 | 2017-04-24 | A kind of negative pressure catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207384580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826991A (en) * | 2020-12-31 | 2021-05-25 | 陇东学院 | Multi-functional phlegm suction device of nursing internal medicine |
-
2017
- 2017-04-24 CN CN201720430054.0U patent/CN207384580U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826991A (en) * | 2020-12-31 | 2021-05-25 | 陇东学院 | Multi-functional phlegm suction device of nursing internal medicine |
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