CN106345041A - Drainage catheter - Google Patents
Drainage catheter Download PDFInfo
- Publication number
- CN106345041A CN106345041A CN201610885535.0A CN201610885535A CN106345041A CN 106345041 A CN106345041 A CN 106345041A CN 201610885535 A CN201610885535 A CN 201610885535A CN 106345041 A CN106345041 A CN 106345041A
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- CN
- China
- Prior art keywords
- tract
- drainage catheter
- drainage
- elastica
- particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1014—Intracavitary radiation therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N2005/1019—Sources therefor
- A61N2005/1024—Seeds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a drainage catheter which comprises a catheter body which is provided with a drainage cavity channel and a particle cavity channel. An elastic film is disposed in a catheter cavity of the catheter body, can be pressed to deform and is used for dividing the catheter cavity into the drainage cavity channel and the particle cavity channel. When the drainage catheter is applied, since the elastic film is disposed in the catheter body of the drainage catheter, when drainage is performed, pressures on the two sides of the elastic film are different, so that the elastic film is protruded towards the side of the particle cavity channel, and the drainage cavity channel can be obviously enlarged to facilitate drainage; when particle leading in is performed, the elastic film contacting with radioactive particles is protruded towards the side of the drainage cavity channel to facilitate the particle leading in. In conclusion, by application of the drainage catheter, the problem of poor circulation of the cavity channels in the double-acting drainage catheter can be effectively solved.
Description
Technical field
A kind of the present invention relates to technical field of medical instruments, more particularly, it relates to drainage catheter.
Background technology
Drainage catheter is the more medical device of Clinical Surgery's application, irritant for excluding hydrops, hematocele, empyema etc.
Material, reducing sepage and be detained, promote inflammatory resolution, thus being conducive to the healing of wound, preventing new infection and diffusion, simultaneously
The pathological change of local can be observed.The drainage tube species clinically using at present is a lot, has urethra, encephalocoele, thoracic cavity, gastrointestinal tract
Deng drainage tube, although material is different, structure slightly difference, is generally single lumen catheter on the whole, and purposes is single.
Be often accompanied by cancerous issue during clinical discovery drainage tube therapentic part, such as malignant obstructive jaundice, Malignent Biliary Obstruction,
Carcinoma of ureter etc., due to the special circumstances of this kind of tumor development, the feasible surgical resection of little patient, simple puncture drainage
Though technology can alleviate obstructive hydrops, local tumor can not be controlled.Therefore, research can release hydrops obstruction as early as possible and can be same
When kill tumor cell interventional minimally-invasive treatment method, significant for improving disease.
At present radioactive particle be implanted to tumor selected position to be carried out treatment being preneoplasia control by means of puncture needle
Effective means.In view of the situation, drainage technology is united two into one with particle intracavitary therapy technology, reach drain and resist
The double effectses of tumor.Double-acting drainage catheter at present, because be internally integrated two tracts, and due to overall cross section
Limit, so the circulation of two tracts is not very well, and then make drainage effect and importing radioactive particle effect all very poor.
In sum, how to efficiently solve the bad problem of double-acting drainage catheter internal passage circulation, be mesh
Front those skilled in the art's urgent problem.
Content of the invention
In view of this, it is an object of the invention to provide a kind of drainage catheter, this drainage catheter can efficiently solve double
The bad problem of drainage catheter internal passage circulation of effect.
In order to achieve the above object, the following technical scheme of present invention offer:
A kind of drainage catheter, including the body with drain tract and particle tract, is provided with the tube chamber of described body
Elastica, described elastica being capable of compressive deformation and for described tube chamber is separated into described drain tract and institute in transverse direction
State particle tract.
Preferably, described body and described elastica are integrally formed.
Preferably, and described elastica thickness be described body pipe thickness six/mono- to a quarter.
Preferably, described body is polyurethane body, and described elastica is elastic polyurethane film.
Preferably, described body is cylindrical tube.
Preferably, it is provided with the described elastica that two-layer is parallel to each other in described tube chamber, described in two-layer between elastica
Tract is described drain tract, and the outside tract of two described elasticas is described particle tract.
Preferably, the inner scrollwork of described body is in circular ring-type.
Preferably, described drain tract and described particle tract all extend to the inner end of described body.
Preferably, described body the inner is provided with pyramid type guide.
Preferably, the outer end of described body is provided with for connecing of drawing described particle tract and drain tract respectively
Head, inner side is provided with the inlet inside and outside drain tract described in insertion, described inlet ovalize.
A kind of drainage catheter that the present invention provides, this drainage catheter is used for puncture drainage and/or radiotherapy.Specifically,
This drainage catheter includes body and is arranged on the elastica of tubular body.Tubular body is provided with drain tract and particle tract,
And elastica is then provided in the tube chamber of body, and tube chamber is divided in transverse direction drain tract and particle tract, its
Middle elastica refers to be capable of the barrier film of compressive deformation.
According to above-mentioned technical scheme, it is recognised that when applying this drainage catheter, when carrying out puncture drainage, now
Drain tract is started working, and when being operated, internal pressure can increase drain tract, and then the both sides of elastica can be led to deposit
In certain pressure reduction, and then elastica can be made in the presence of pressure reduction, the now change of elastica raised to particle tract side
Shape can make effectively, and the cross section of drain tract increases, and then greatly facilitates being smoothed out of drain.In the same manner, carrying out
During radiotherapy, now, elastica reversal deformation, and then so that the cross-sectional area of particle tract is increased, to facilitate radioactivity grain
Son passes through.Even and if when needing to treat, first radioactive particle can be transported to specified location simultaneously, then carry out puncture drainage,
So that radiotherapy and puncture drainage are synchronously carried out, and now, in body other positions, drainage channel still has larger transversal
Face, it is possible to significantly facilitate the carrying out of puncture drainage.So, when applying this drainage catheter, because this drainage catheter body
Internal elastica, can comply with the Direction distortion of pressure reduction so that when carrying out drain, drain tract can significantly increase, with
Facilitate drain, and when carrying out particle importing, particle passage also significantly increases, and to be easily introduced into, in sum, applies this drain
Conduit can efficiently solve the bad problem of double-acting drainage catheter internal passage circulation.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of drainage catheter provided in an embodiment of the present invention；
Fig. 2 is for drainage catheter a-a in a quiescent state in Fig. 1 to cross section structure schematic diagram；
Fig. 3 is for a-a under drain state for the drainage catheter in Fig. 1 to cross section structure schematic diagram；
Fig. 4 is for a-a under radiotherapy state for the drainage catheter in Fig. 1 to cross section structure schematic diagram.
In accompanying drawing, labelling is as follows:
Joint 1, body 2, drain tract 3, particle tract 4, elastica 5, pyramid type guide 6, radioactive particle 7, enter
Liquid mouth 8.
Specific embodiment
The embodiment of the invention discloses a kind of drainage catheter, to efficiently solve double-acting drainage catheter internal passage stream
The bad problem of the general character.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-Fig. 4, Fig. 1 is the structural representation of drainage catheter provided in an embodiment of the present invention；Fig. 2 is in Fig. 1
Drainage catheter a-a in a quiescent state is to cross section structure schematic diagram；Fig. 3 is for drainage catheter in Fig. 1 under drain state
A-a is to cross section structure schematic diagram；Fig. 4 is for a-a under radiotherapy state for the drainage catheter in Fig. 1 to cross section structure schematic diagram.
In a kind of specific embodiment, present embodiments provide a kind of drainage catheter, this drainage catheter is used for puncture drainage
And/or radiotherapy.Specifically, this drainage catheter includes body 2 and is arranged on the elastica 5 within body 2.
Body 2 is internally provided with drain tract 3 and particle tract 4, and wherein drain tract 3 is used for puncture drainage technology, with
By pungents such as the hydrops of inside of human body, hematocele or empyemas, drain is out.Specific drainage way may be referred to existing skill
Art, in this not go into detail.Wherein particle tract 4, for radiotherapy, when carrying out radiotherapy, by particle tract
4, by radioactive particle 7 by importing to the position needing to carry out radiation treatment in human body, it should be noted that specifically how
Carry out radiation treatment using particle tract 4, may be referred to prior art, in this not go into detail.But it is emphasized that
Wherein radiotherapy and puncture drainage synchronous can carry out or asynchronous carry out.
The inside of body 2 has tube chamber, and specifically, this body 2 can be cylindrical tube, and that is, cross section is circle, also may be used
To be rectangular tube, that is, cross section be square, in order to improve compliance, enable body 2 submissive through human body, excellent herein
Body 2 is selected to be column type pipe.
And elastica 5 is then provided in the tube chamber of body 2, and tube chamber is divided in transverse direction drain tract 3 He
Particle tract 4, it should be noted that wherein elastica 5 should be arranged parallel to lumen extension line, by the cross section one of tube chamber
It is divided into two or one to be divided into many parts, that is, elastica 5 should be separated in horizontal direction, and should not be perpendicular to lumen extension line and set
Put, should not be to be separated in bearing of trend.It should be noted that wherein horizontal direction refers to hanging down of tube chamber bearing of trend
Nogata is to and longitudinally referring to the bearing of trend of tube chamber.Wherein elastica 5 refers to the barrier film being capable of compressive deformation, specifically
Can be made using elastomeric material, elastic construction can be arranged to, such as folded form.But should ensure that, when elastica 5
Both sides are pressurized when differing, and elastica 5 can be with pressure reduction Direction distortion, so that the deformation power being formed is to balance each other with pressure reduction.Also
It should be noted that wherein elastica 5 can arrange one layer it is also possible to arrange multilamellar, in order to preferably import radioactive particle
7, and ensure integrally-built stability, the elastica 5 that two-layer is parallel to each other can be provided with tube chamber, so that two-layer is elastic
Tract between film 5 is drain tract 3, and the outside tract of two elasticas 5 is particle tract 4, and wherein elastica 5 is outer
Side refers to the side away from another elastica 5.
In the present embodiment, when applying this drainage catheter, when carrying out puncture drainage, now drain tract 3 starts work
Make, when being operated, internal pressure can increase drain tract 3, and then the both sides of elastica 5 can be led to there is certain pressure
Difference, and then elastica 5 can be made in the presence of pressure reduction, raised to particle tract 4 side, now the deformation of elastica 5 can
Effectively make, the cross section of drain tract 3 increases, and then greatly facilitates being smoothed out of drain.In the same manner, control carrying out radiation
During treatment, now, elastica 5 reversal deformation, and then so that the horizontal basal plane of particle tract 4 is increased, to facilitate radioactive particle 7 to pass through.
Even and if when needing to treat, first radioactive particle can be transported to specified location, then carry out puncture drainage, so that radiating simultaneously
Treatment and puncture drainage are synchronously carried out, and now, in body 2 other positions, drainage channel still has larger cross section, so
The carrying out of puncture drainage can be significantly facilitated.So, when applying this drainage catheter, because within this drainage catheter body 2
Elastica 5, can comply with the change deformation of pressure reduction so that when carrying out drain, drain tract 3 can substantially increase slightly, with convenient
Drain, and when carrying out particle importing, particle passage also substantially increases slightly, to be easily introduced into, in sum, applies this drainage catheter
The bad problem of double-acting drainage catheter internal passage circulation can be efficiently solved.
Should be tightly connected between its middle tube body 2 and elastica 5, so that drain tract 3 can separate with particle tract 4,
Avoid circulating mutually.Wherein elastica 5 can be added in the later stage, but manufactures cumbersome, is also easier to cause, drainage catheter
Overall stationarity is not fine.Based on this, preferably body 2 is integrally formed with elastica 5 herein, that is, in molding body 2, with
When extrusion moulding elastica 5, be integrally formed good airproof performance, low cost of manufacture.It should be noted that wherein elastica 5 and body 2
Identical material extrusion moulding can be adopted, different materials extrusion moulding can also be adopted.Manufacture for convenience, body 2 can be made
Consistent with the material of elastica 5, specifically, body 2 can be made to be polyurethane body, elastica 5 is elastic polyurethane film, certainly
Can also be using the stronger material of other Toughness Ratios.Simultaneously in order to avoid the tube wall of body 2 too deforms, cause interspersed human body
When, bring stronger discomfort, can make elastica 5 thickness be body 2 pipe thickness 1 to four/6th/
It should include 1/6th and a quarter between one, so that the thickness of elastica 5 reduces, increase deformation quantity, make body simultaneously
2 thickness is larger, can reduce the deformation that the tube wall of body 2 occurs as far as possible.
When being used, in the outer end of drainage catheter, that is, it is located at the one end outside human body, is shunted for convenience,
Joint 1 typically can be provided with, joint 1 is used for drawing particle tract 4 and drain tract 3 respectively, so that the port of drain tract 3
With the port scattering device of particle tract 4, to facilitate finishing operations.And the inner of drainage catheter, that is, insert the one of inside of human body
End, in order to introduce the materials such as inside of human body hydrops, typically can be provided with two inside and outside insertion drain tract 3 in body 2 side
The inlet 8 of side, the materials such as the hydrops in body 2 outside to be incorporated in drain tract 3 by inlet 8, in order to more preferably more
More hydrops etc. needs the material of drain for fast introducing, is preferably uniformly arranged multiple inlets 8 in the side of body 2 herein,
Simultaneously in order to avoid inlet 8 interferes with the setting of elastica 5, preferred inlet 8 ovalize herein.It should be noted that
The inner of its middle tube body 2 refers to insert one end of human body, and is not necessarily referring to end face, specifically, body 2 can allow for insert
One section of human body should be the inner.
When being punctured, generally requiring drainage catheter top by steel wire is in level off to linear type, to facilitate insertion people
Internal portion, and when carrying out drain, need to extract steel wire out so that drainage catheter under shaped memory so as to inner scrollwork, and then
The inner material drawn with needs such as hydrops is made to have bigger attaching space.In view of the shape of human body, in order that inner end
Portion's pliability is more preferable, it is to avoid scrollwork radius is too small, and so that intensity is increased, and causes more discomfort.Preferred herein, by body 2
Inner scrollwork be in circular ring-type, that is, overall is in that pigtail is curved, so that radius of curvature everywhere is maximum as far as possible, and then can
Hardness everywhere is made to reduce.
In order to preferably insert in human body, preferably the inner of body 2 is provided with pyramid type guide 6, in order to keep away herein
Exempt to accidentally injure human body the sharp corner passivation it should by pyramid type guide 6.It is also contemplated that the inner depth entering, led according to pyramid type
To determine to the depth of part 6, in order to ensure that drain and radiation treatment can proceed to bosom, will draw herein preferably
Flow tract 3 and particle tract 4 all extends to the end of body 2 the inner.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of drainage catheter, including the body with drain tract and particle tract it is characterised in that the tube chamber of described body
Inside it is provided with elastica, described elastica being capable of compressive deformation and for described tube chamber is separated into described drain in transverse direction
Tract and described particle tract.
2. drainage catheter according to claim 1 is it is characterised in that described body is integrally formed with described elastica.
3. drainage catheter according to claim 2 is it is characterised in that the thickness of described elastica is the tube wall of described body
Six/mono- to a quarter of thickness.
4. drainage catheter according to claim 3 it is characterised in that described body be polyurethane body, described elastica
For elastic polyurethane film.
5. drainage catheter according to claim 1 is it is characterised in that described body is cylindrical tube.
6. drainage catheter according to claim 1 is it is characterised in that be provided with the institute that two-layer is parallel to each other in described tube chamber
State elastica, the tract between elastica described in two-layer is described drain tract, the outside tract of two described elasticas is
Described particle tract.
7. the drainage catheter according to any one of claim 1-6 is it is characterised in that the inner scrollwork of described body is in circle
Type.
8. drainage catheter according to claim 7 is it is characterised in that described drain tract is all extended with described particle tract
To the inner end of described body.
9. drainage catheter according to claim 8 is it is characterised in that described body the inner is provided with pyramid type guide.
10. drainage catheter according to claim 9 is it is characterised in that the outer end of described body is provided with for will be described
The joint that particle tract and drain tract are drawn respectively, inner side is provided with entering inside and outside drain tract described in insertion
Liquid mouth, described inlet ovalize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885535.0A CN106345041A (en) | 2016-10-10 | 2016-10-10 | Drainage catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885535.0A CN106345041A (en) | 2016-10-10 | 2016-10-10 | Drainage catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106345041A true CN106345041A (en) | 2017-01-25 |
Family
ID=57865733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610885535.0A Pending CN106345041A (en) | 2016-10-10 | 2016-10-10 | Drainage catheter |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198812A (en) * | 2017-07-12 | 2017-09-26 | 上海鹏冠生物医药科技有限公司 | A kind of medical catheter with barrier film |
| CN107929915A (en) * | 2017-12-20 | 2018-04-20 | 曹军英 | Inside-and-outside drainage for later period of hepatocarcinoma |
| CN108888845A (en) * | 2018-08-09 | 2018-11-27 | 中南大学湘雅医院 | Oropharynx air duct |
| CN109925588A (en) * | 2019-04-18 | 2019-06-25 | 中国人民解放军陆军军医大学第二附属医院 | Improve the interventional therapy conduit of ultrasonic sensitive |
| CN112957597A (en) * | 2021-03-24 | 2021-06-15 | 华中科技大学同济医学院附属协和医院 | Device for preventing narrow anastomotic stoma after pediatric esophagectomy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198812A (en) * | 2017-07-12 | 2017-09-26 | 上海鹏冠生物医药科技有限公司 | A kind of medical catheter with barrier film |
| CN107929915A (en) * | 2017-12-20 | 2018-04-20 | 曹军英 | Inside-and-outside drainage for later period of hepatocarcinoma |
| CN107929915B (en) * | 2017-12-20 | 2020-05-22 | 中国人民解放军北部战区总医院 | Internal and external drainage tube for advanced liver cancer |
| CN108888845A (en) * | 2018-08-09 | 2018-11-27 | 中南大学湘雅医院 | Oropharynx air duct |
| CN108888845B (en) * | 2018-08-09 | 2023-08-15 | 中南大学湘雅医院 | an oropharyngeal airway |
| CN109925588A (en) * | 2019-04-18 | 2019-06-25 | 中国人民解放军陆军军医大学第二附属医院 | Improve the interventional therapy conduit of ultrasonic sensitive |
| CN109925588B (en) * | 2019-04-18 | 2023-10-20 | 中国人民解放军陆军军医大学第二附属医院 | Interventional therapy catheter with improved ultrasonic sensitivity |
| CN112957597A (en) * | 2021-03-24 | 2021-06-15 | 华中科技大学同济医学院附属协和医院 | Device for preventing narrow anastomotic stoma after pediatric esophagectomy |
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Application publication date: 20170125 |