CN209378070U - A kind of saccule multicavity multifunction alimentary canal pipeline - Google Patents
A kind of saccule multicavity multifunction alimentary canal pipeline Download PDFInfo
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- CN209378070U CN209378070U CN201822116640.5U CN201822116640U CN209378070U CN 209378070 U CN209378070 U CN 209378070U CN 201822116640 U CN201822116640 U CN 201822116640U CN 209378070 U CN209378070 U CN 209378070U
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- sacculus
- orifice
- pipeline
- nutrition
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- 210000005077 saccule Anatomy 0.000 title claims abstract description 14
- 235000016709 nutrition Nutrition 0.000 claims abstract description 39
- 230000035764 nutrition Effects 0.000 claims abstract description 38
- 210000004534 cecum Anatomy 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000011161 development Methods 0.000 claims description 6
- 235000008935 nutritious Nutrition 0.000 claims description 2
- 230000002496 gastric effect Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006837 decompression Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000023597 hemostasis Effects 0.000 abstract description 3
- 230000010412 perfusion Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract 1
- 230000002588 toxic effect Effects 0.000 abstract 1
- 210000001331 nose Anatomy 0.000 description 9
- 210000002784 stomach Anatomy 0.000 description 7
- 230000006378 damage Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000001198 duodenum Anatomy 0.000 description 2
- 210000003238 esophagus Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000000936 intestine Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 210000001989 nasopharynx Anatomy 0.000 description 2
- 210000001187 pylorus Anatomy 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 206010050456 Anastomotic leak Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010033627 Pancreatic injury Diseases 0.000 description 1
- 206010033645 Pancreatitis Diseases 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 210000000436 anus Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002318 cardia Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 208000017574 dry cough Diseases 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 210000001564 haversian system Anatomy 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000001630 jejunum Anatomy 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
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- 230000000474 nursing effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Landscapes
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
A kind of saccule multicavity multifunction alimentary canal pipeline, including pipeline ontology are provided with main channel, auxiliary cavity, nutrition cavity, sacculus cavity in pipeline ontology, pipeline ontology top are provided with main chamber road junction, auxiliary orifice, nutrition orifice, sacculus orifice；Main channel is connected to main chamber road junction, and auxiliary cavity is connected to auxiliary orifice, and nutrition cavity is connected to nutrition orifice, and sacculus cavity is connected to sacculus orifice；Pipeline ontology, main channel and auxiliary cavity bottom end be cecum, be provided with counterweight pearl in pipeline ontology, at cecum；Cecum through-hole is provided on the peripheral wall of the top of counterweight pearl, main channel and auxiliary cavity.Its advantage is that: integrate alimentary canal hemostasis, support, decompression, rinse, perfusion and gastrointestinal nutrition are supported, drainage etc. is multi-functional, are had no toxic side effect, service life is long, and it is more safe and reliable to make entirely to treat use process, rapidly and efficiently；The working strength for reducing medical personnel reduces the painful and complication of patient and reduces medical expense, and social benefit is obvious.
Description
Technical field
The utility model relates to the field of medical instrument technology, are specifically related to a kind of saccule multicavity multifunction alimentary canal pipe
Road.
Background technique
Alimentary canal pipeline be mainly used for alimentary canal hemostasis, support, decompression, rinse, perfusion and gastrointestinal nutrition support, drainage
Deng.The alimentary canal pipeline of international at present and domestic medical market circulation is varied, such as Sengstaken-Blakemore tube, stomach tube, nutrient canal of intestine
Etc. a variety of pipelines, all kinds of tubing are had a single function, and can only do special purpose in single department, and drawback present in use process compared with
More: 1) production raw material are dangerous, and service life is short, and generally 7-15 days, patient economy burden weight；2) pipe difficulty, patient are set
Use painful the case where easy slippage easily slides into greatly, and Yi Fasheng lumen pollutes, blocks and persistently attract damage alimentary canal inner wall；3)
Position inaccurate can not observe patient's body and set pipe situation, it is also necessary to cumbersome fixation be carried out in patient face portion, so that patient
Inconvenient activity；4) hair for situations such as the case where setting pipe through nasopharynx easily causes the retch of patient, causes alimentary canal content reflux
Raw, usage experience sense is very poor.In practice, such as the current postoperative common pipeline of alimentary tract anastomosis is to previous anastomotic without supporting role, nothing
The complication such as method preventing anastomotic stricture；Surgical operations (such as pancreatitis, Pancreatic Trauma, ten such as tumor in digestive tract and benign lesion
Two duodenum 12 wounds, anastomotic leakage etc.) operation excision after, gastrointestinal decompression 7-10 days need to be continued to patient, can not feed, intestines need to be continued
Interior Nutritional support, and product not can be implemented simultaneously gastrointestinal decompression and enteral nutrition the two stand-alone programs at present；Furthermore such as
The common issue of common alimentary canal pipeline is to set pipe difficulty, sets Guan Yi through larynx and dry cough is caused to be vomitted, and easily slip, and majority is single
Outer fixation, sufferer facial area are not fixed firmly and extremely uncomfortable；Body built-in pipe situation can not be observed after setting pipe, easily causes pipeline body
Interior stacking etc..
Utility model content
Technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art and provide a kind of more function of saccule multicavity
Can alimentary canal pipeline, its service life is long, and material safety can make pipeline after entering patient's body, can by blind end section and
Outer body is fixed self-positioning respectively, and observable sacculus fullness degree.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of saccule multicavity multifunction alimentary canal pipe
Road, including pipeline ontology, it is characterised in that: main channel, auxiliary cavity, nutrition cavity, balloon cavity are provided in the pipeline ontology
Road is provided with main chamber road junction, auxiliary orifice, nutrition orifice, sacculus orifice on pipeline ontology top；Main chamber road
It is connected to main chamber road junction, the auxiliary cavity is connected to the auxiliary orifice, the nutrition cavity and the nutrition orifice
Connection, the sacculus cavity are connected to the sacculus orifice；
The bottom end of the pipeline ontology, main chamber road and the auxiliary cavity is cecum, and the pipeline ontology is interior, described blind
Counterweight pearl is provided at end；It is logical that cecum is provided on the peripheral wall of the top of the counterweight pearl, main chamber road and the auxiliary cavity
Hole；
On the periphery wall of the pipeline ontology, it is arranged with sacculus, the sacculus is connected to the sacculus cavity；The sacculus
The periphery wall of the pipeline ontology at place is equipped with X-ray development point；
The sacculus cavity is connected to the sacculus orifice；The sacculus orifice connects a band pressure pilot balloon
Check valve.
Preferably, the least significant end of the nutrition cavity extends to below the cecum at 30-40 centimeters；The nutrition cavity
Least significant end above 3 centimeters place be arranged nutrition portal.
Preferably, main chamber road junction, auxiliary orifice, nutrition orifice are detained respectively is equipped with double-turning-cover, female Luer, heparin
Cap.
Preferably, on the peripheral wall of the pipeline ontology, it is vertically arranged with graduation mark.
Preferably, on the peripheral wall of the pipeline ontology, it is vertically arranged with X-ray developing line.
Preferably, on the peripheral wall of the pipeline ontology, it is provided with outer fixed wing of nose folder.
Preferably, the cecum through-hole is 360 degree around multiple rows of through-hole.
Compared with prior art, the utility model has the beneficial effects that 1, the inside and outside double of alimentary canal pipeline can be achieved at the same time
Fixed, outer fixed position can be the wing of nose, be pressed from both sides using the wing of nose；It can be esophagus, cardia, pylorus, enteron aisle, anus that position is fixed in sacculus
Deng；2, sacculus closes alimentary canal space, can be to prevent alimentary canal content reflux；3, multiple rows of aperture, sacculus branch are surround for 360 degree of cecum
The circuit design of the manufactured activity space of support and major-minor cavity can prevent pipeline from inhaling wall and gastrointestinal mucosal is caused to damage with 100%
Wound；4, wire guide conveniently sets pipe and 3-5 centimetres shorter than pipeline cecum, and such stomach tube tip quality is soft, convenient to pass through patient's nose
Prolong its downslide, sufferer pain is small when rear wall is swallowed in insertion in pharyngeal position；5, pipeline ontology is from a scale, X-ray developing line and X-ray ball
Capsule anchor point facilitates into rear observation stomach tube sets pipe situation in vivo and whether balloon position is suitable；6, external pilot balloon can be with
The fullness degree of sacculus in effective indication body, medical staff can be decided whether or not according to its fullness degree as its deflation or tonifying Qi；
7, cecum most end carries counterweight pearl, and pipe (entering esophagus, stomach, enteron aisle etc. when conveniently setting pipe) is conveniently set in airflow design；8, ball
Capsule has supporting role to surgery surgical stapling mouth, effectively prevents the complication such as alimentary tract anastomosis stenostomia；9, tube body can draw in art
It leads, blindmate or jejunum entered by pylorus, duodenum, Qu Shi ligament under gastroscope and X-ray guidance, progress enteral nutrition branch
It holds, while stomach inner part can do gastrointestinal decompression；10, outer fixed wing of nose folder not only can prevent from, and more can recorde merging and carve
It spends and prevents pipeline slide-in from it being caused to stack in alimentary canal；11, disposable, avoid medical cross infection；12, major-minor
Cavity bottom end communicates, and main channel filling may be implemented in when gastric lavage, and the effect that auxiliary cavity attracts, gastric lavage effect is more preferable in the unit time,
In conjunction with 360 degree of multiple rows of apertures, it is not easy by bulky grain plugging, gastric lavage effect is more preferable；13, the medical TPU(medical polyurethane of import)
Grain be used as raw material, have splendid biocompatibility, it is nontoxic, without pathergy, without local irritation, without pyrogen, phase
It is more with the obvious advantage than raw material such as traditional rubber, PVC, silica gel, it is obviously prolonged using the time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In the figure, it is marked as
1, pipeline ontology；11, main channel；12, auxiliary cavity；13, nutrition cavity；131, nutrition is portalled；14, sacculus cavity；
15, cecum；16, cecum through-hole；17, X-ray development point；18, graduation mark；19, X-ray developing line；21, main chamber road junction；
22, auxiliary orifice；23, nutrition orifice；24, sacculus orifice；31, double-turning-cover；32, female Luer；
33, calparine cap；4, sacculus；5, the check valve with pressure pilot balloon；6, outer fixed wing of nose folder；7, counterweight pearl.
Specific embodiment
Embodiment with reference to the accompanying drawing is described further the utility model:
As shown in Figure 1, a kind of saccule multicavity multifunction alimentary canal pipeline, including pipeline ontology 1, the interior setting of pipeline ontology 1
Have main channel 11, auxiliary cavity 12, nutrition cavity 13, sacculus cavity 14, the top of pipeline ontology 1 be provided with main chamber road junction 21,
Auxiliary orifice 22, nutrition orifice 23, sacculus orifice 24；Main channel 11 is connected to main chamber road junction 21, auxiliary cavity 12 and auxiliary chamber
Road junction 22 is connected to, and nutrition cavity 13 is connected to nutrition orifice 23, and sacculus cavity 14 is connected to sacculus orifice 24；
Pipeline ontology 1, main channel 11 and auxiliary cavity 12 bottom end be cecum 15, be provided in pipeline ontology 1, at cecum 15
Counterweight pearl 3；Cecum through-hole 16 is provided on the peripheral wall of the top of counterweight pearl 3, main channel 11 and auxiliary cavity 12；
On the periphery wall of pipeline ontology 1, it is arranged with sacculus 4, sacculus 4 is connected to sacculus cavity 14；Pipeline sheet at sacculus 4
The periphery wall of body 1 is equipped with X-ray development point 17；Sacculus cavity 14 is connected to sacculus orifice 24；The connection of sacculus orifice 24 one
A check valve 5 with pressure pilot balloon.
Button is equipped with double-turning-cover 31 on main chamber road junction 21, and button is equipped with female Luer 32, nutrition orifice 23 in auxiliary orifice 22
Upper button is equipped with calparine cap 33；The least significant end of nutrition cavity 13 extends at lower section 30-40 centimeters of cecum 15；Apart from nutrition cavity
Top setting at 3 centimeters of least significant end of 13 is nutritious to portal 131；On the peripheral wall of pipeline ontology 1, it is vertically arranged with graduation mark
18；On the peripheral wall of pipeline ontology 1, it is vertically arranged with X-ray developing line 19；On the peripheral wall of pipeline ontology 1, it is provided with the outer fixed wing of nose
Folder 6；Cecum through-hole 16 is 360 degree around multiple rows of through-hole.
The working principle and the course of work of the utility model are as follows:
As shown in Figure 1, a movable seal wire can be inserted in main channel road 11, to be easy the reality when using starting
With novel inserted into the patient；After being inserted into appropriate location, movable seal wire can be withdrawn from.By medical staff by the utility model
Easily merging cecum 15 and the paraffin oil of counterweight pearl 7 or other lubrications, the hand rest position is inserted into patient by patient oral cavity or nasal cavity
Alimentary canal, easily by patient's nasopharynx position, is easy merging alimentary canal since position 3-6cm is without seal wire.It is specified to reach alimentary canal
Behind position, by the check valve 5 with pressure pilot balloon of 14 upper end of sacculus cavity, to the slow inflatable body of sacculus 4 or liquid；When
The size of sacculus 4, which reaches, is enough to block alimentary canal local time, stops the operation, to stop blooding, support, interior fixation, antireflux or
The operation such as anti-suction wall of person, the external pilot balloon in the check valve 5 with pressure pilot balloon should heave state constantly at this time；Doctor
Shield personnel should be using this state as reference, and determine when be 4 make-up gas of sacculus: such as external pilot balloon suppresses down a tentering
Degree then proves that the gas in sacculus 4 is insufficient, should be inflated, be made into sacculus 4 by the check valve 5 with pressure pilot balloon at this time
It obtains external pilot balloon and keeps expanded state, so that it plays sufficiently effect.
Then, fixed outside the position of the patient wing of nose is carried out using outer fixed wing of nose folder 6, and placed-depth is marked, simultaneously
It can prevent pipeline from sliding into internal；Set pipe it is difficult or need to monitor after pipeline insertion set pipe position in the case where, can be with
Guide underlying pipe or monitoring set whether pipe situation is correct, and X-ray developing line 19 should develop at this time in X-ray machine, while in sacculus 4
17 also Ying Xianying of X-ray development point on tube wall, this point should be with the nonoverlapping development point of X-ray developing line 19, to be explicitly shown this
Whether the position of utility model sacculus 4 is correct；
When patient need to do vacuum suction, decompression, nursing etc. operation when, can by main channel 11 or auxiliary cavity 12 from
The double-turning-cover 31 or female Luer 32 of band, outer even syringe or vacuum extractor, carry out suction or injection operation；Work as gastric lavage
When, liquid can be injected by main channel 11, auxiliary cavity 12 is aspirated, and gastric lavage effect is accelerated, and reverse use of two chambers also may be used；Such as
Gastrointestinal nutrition need to be done, independent nutrition cavity 13 can be used, is not obscured with the use of main channel 11, auxiliary cavity 12 operation, because
This not will cause secondary pollution.
15 top of cecum being easily placed in has opened up 360 degree around multiple rows of cecum through-hole 16；In addition sacculus 4 props up stomach wall is
The internal air circulation that activity space and main channel 11, the auxiliary cavity 12 of cecum manufacture are formed, ensure that the utility model can be with
100% prevents the case where aspirating damage stomach wall generation；The previous anastomotic for caused by surgical operation, the pipeline ontology 1 of the utility model
And sacculus 4 has fabulous supporting role；For needing while carrying out alimentary canal decompression and the function such as alimentary canal hemostasis and enteral nutrition
Used time can also be carried out simultaneously with the main channel 11 of the utility model, auxiliary cavity 12, sacculus 4, sacculus cavity 14.
After usage, by the check valve 5 with pressure pilot balloon on sacculus cavity 14, by the gas in sacculus 4
Body or liquid are slowly extracted out.Nutrition cavity 13, air bag cavity 14 are cavity independent, and main channel 11 and auxiliary cavity 13 are blind
It holds 15 upward 10 centimeters to communicate, forms a big chamber；Nutrition cavity 13 as needed can not also be produced on the utility model
Pipeline ontology 1 in.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (7)
1. a kind of saccule multicavity multifunction alimentary canal pipeline, including pipeline ontology, it is characterised in that: setting in the pipeline ontology
Have main channel, auxiliary cavity, nutrition cavity, sacculus cavity, pipeline ontology top be provided with main chamber road junction, auxiliary orifice,
Nutrition orifice, sacculus orifice；Main chamber road is connected to main chamber road junction, and the auxiliary cavity and the auxiliary orifice connect
Logical, the nutrition cavity is connected to the nutrition orifice, and the sacculus cavity is connected to the sacculus orifice；
The pipeline ontology, main chamber road and the auxiliary cavity bottom end be cecum, in the pipeline ontology, at the cecum
It is provided with counterweight pearl；Cecum through-hole is provided on the peripheral wall of the top of the counterweight pearl, main chamber road and the auxiliary cavity；
On the periphery wall of the pipeline ontology, it is arranged with sacculus, the sacculus is connected to the sacculus cavity；At the sacculus
The periphery wall of the pipeline ontology is equipped with X-ray development point；
The sacculus cavity is connected to the sacculus orifice；The sacculus orifice connects a band with pressure pilot balloon
The check valve of pressure pilot balloon.
2. saccule multicavity multifunction alimentary canal pipeline according to claim 1, it is characterised in that: the nutrition cavity is most
Low side extends to below the cecum at 30-40 centimeters；It is arranged at 3 centimeters of the top of the least significant end of the nutrition cavity nutritious
Portal.
3. saccule multicavity multifunction alimentary canal pipeline according to claim 2, it is characterised in that: main chamber road junction, auxiliary
Orifice, nutrition orifice are detained respectively is equipped with double-turning-cover, female Luer, calparine cap.
4. saccule multicavity multifunction alimentary canal pipeline according to claim 3, it is characterised in that: the week of the pipeline ontology
On wall, it is vertically arranged with graduation mark.
5. saccule multicavity multifunction alimentary canal pipeline according to claim 4, it is characterised in that: the week of the pipeline ontology
On wall, it is vertically arranged with X-ray developing line.
6. saccule multicavity multifunction alimentary canal pipeline according to claim 5, it is characterised in that: the week of the pipeline ontology
On wall, it is provided with outer fixed wing of nose folder.
7. saccule multicavity multifunction alimentary canal pipeline according to claim 6, it is characterised in that: the cecum through-hole is
360 degree around multiple rows of through-hole.
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|---|---|---|---|
| CN201822116640.5U CN209378070U (en) | 2018-12-17 | 2018-12-17 | A kind of saccule multicavity multifunction alimentary canal pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822116640.5U CN209378070U (en) | 2018-12-17 | 2018-12-17 | A kind of saccule multicavity multifunction alimentary canal pipeline |
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ID=67872170
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926060A (en) * | 2021-10-27 | 2022-01-14 | 深圳市慧极创新医疗科技有限公司 | Novel ventricular drainage device |
| WO2022159714A1 (en) * | 2021-01-21 | 2022-07-28 | Inmed, Inc. | Gastrojejunal tube apparatus and methods of use |
-
2018
- 2018-12-17 CN CN201822116640.5U patent/CN209378070U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022159714A1 (en) * | 2021-01-21 | 2022-07-28 | Inmed, Inc. | Gastrojejunal tube apparatus and methods of use |
| EP4281153A4 (en) * | 2021-01-21 | 2024-12-04 | Inmed, Inc. | GASTROJEJUNAL TUBE DEVICE AND METHOD OF USE |
| CN113926060A (en) * | 2021-10-27 | 2022-01-14 | 深圳市慧极创新医疗科技有限公司 | Novel ventricular drainage device |
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