CN110327088B - Intestinal tract fixing and traction device - Google Patents
Intestinal tract fixing and traction device Download PDFInfo
- Publication number
- CN110327088B CN110327088B CN201910638768.4A CN201910638768A CN110327088B CN 110327088 B CN110327088 B CN 110327088B CN 201910638768 A CN201910638768 A CN 201910638768A CN 110327088 B CN110327088 B CN 110327088B
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- Prior art keywords
- pipe
- head
- propelling
- tube
- positioning
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- 210000001035 gastrointestinal tract Anatomy 0.000 title claims abstract description 35
- 230000000968 intestinal effect Effects 0.000 claims description 21
- 238000004873 anchoring Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 210000000436 anus Anatomy 0.000 description 10
- 210000000936 intestine Anatomy 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 208000005016 Intestinal Neoplasms Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 201000002313 intestinal cancer Diseases 0.000 description 1
- 210000002429 large intestine Anatomy 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1103—Approximator
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention relates to the technical field of medical instruments, in particular to an intestinal tract fixing and traction device which comprises a positioning pipe, a propelling hose, a connecting pipe and a propelling head, wherein a fixing cover is arranged at the tail end of the positioning pipe, the propelling hose is positioned in the positioning pipe, a spiral pipe is arranged in the middle of the propelling hose, the head end of the propelling hose is a straight pipe I, the tail end of the propelling hose is a straight pipe II, the straight pipe II penetrates through the fixing cover and is exposed, the connecting pipe is positioned in the pipe at the head end of the positioning pipe and is connected with the propelling head positioned at the head end of the positioning pipe, the end of the straight pipe I is closed and is connected with the propelling head through the connecting pipe, a suture line is arranged at the head end. The invention has simple and ingenious arrangement and convenient operation, can not cause injury to human body, can quickly send the connecting pipe into the operation position of a patient, shortens the operation time, improves the operation efficiency, and leads the connecting pipe to be more closely connected with the upper intestinal tract and the lower intestinal tract.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an intestinal tract fixing and traction device.
Background
Intestinal tract fixing tractor: in the middle of the surgery intestinal cancer operation, the doctor can cut off the whole large intestine, the tractor enters the intestinal tract from the anus, the upper end intestinal tract and the head can be fixed together, and then the tractor is pulled down to the lower section intestinal tract interface to fix the two intestinal tracts together, so that the operation of the doctor is facilitated. The existing retractor is only of a simple tubular structure, cannot facilitate the suture of a pipeline and an intestinal tract, and is easy to loosen after the suture.
Like the fixed tractor of application publication No. CN 107233113A's intestinal, fixed pipe one end sets up the inclined plane, and the inclined plane can make the tip of fixed pipe penetrate the intestinal inboard more easily, makes things convenient for being connected of intestinal and fixed pipe. However, the following problems also exist with this solution: (1) one end of the fixing tube is provided with the inclined plane, although the end part can penetrate into the inner side of the intestinal tract more easily, the end part is in a sharp-pointed shape, so that the intestinal part is pricked (injured) more easily, and the operation progress is influenced; (2) since the connecting tubes connected to the upper and lower intestinal tracts have a flexibility approximately equal to that of the intestinal tracts, it is difficult to feed the tube from the anus to the surgical site.
Disclosure of Invention
The invention aims to provide an intestinal tract fixing and traction device to solve the problems in the background technology. The intestinal tract fixing and traction device has the characteristics of simple and ingenious setting, convenience in operation, no harm to a human body, capability of quickly sending the connecting pipe into a surgical position of a patient, shortened operation time, improved operation efficiency and more compact connection between the connecting pipe and the upper end intestinal tract and the lower section intestinal tract.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a draw gear is fixed to intestinal, includes the registration arm, impels hose, connecting pipe and impels the head, fixed lid is installed to the tail end of registration arm, impel the hose to be located the registration arm, and the middle part that should impel the hose is the spiral pipe, and the head end is straight pipe I, and the tail end is straight pipe II, it exposes after fixed lid is run through to straight pipe II, the connecting pipe is located the intraductal of registration arm head end, and is connected with the propulsion head that is located registration arm head department, I tip seals of straight pipe, and passes and impel the head by the connecting pipe and be connected, the head end of connecting pipe is equipped with the stylolite, and the tail end is equipped.
Preferably, a plurality of groups of uniformly distributed wire grooves are formed in the pipe section of the head end of the connecting pipe, and the suture line is arranged in the wire grooves and is in limit fit with the wire grooves through a knot.
Preferably, the double-ring fixing structure includes an outer annular rubber tube and an inner annular rubber tube, wherein: the outer annular rubber tube is embedded in the outer wall of the tail end of the connecting pipe, and the inner annular rubber tube is embedded in the inner wall of the tail end of the connecting pipe.
Preferably, the propelling head is a shell with a bullet-shaped appearance.
Preferably, the cover is equipped with location gasbag circle and retaining ring on the registration arm, location gasbag circle is close to the head end of registration arm, the retaining ring is close to the tail end of registration arm.
Preferably, the outer annular rubber tube and the inner annular rubber tube are on the same cross section.
Preferably, the positioning air bag ring is connected with an inflation tube, the inflation tube is arranged in the wall of the positioning tube, and the other end of the inflation tube is exposed.
Preferably, the positioning pipe is provided with a ring groove, the positioning air bag ring is sleeved in the ring groove, and when the positioning air bag ring does not bulge, the top of the positioning air bag ring is flush with the top of the ring groove.
Preferably, a valve is arranged at the exposed end part of the inflation tube.
Compared with the prior art, the invention has the beneficial effects that:
(1) the spiral tube is inflated, the flat tube II is fixed on the fixing cover, the end part of the flat tube I is sealed, and the reverse thrust effect is realized, so that the flat tube I can realize the propulsion of the propulsion head, the propulsion head can drive the connecting tube to move until reaching the joint of the upper intestinal tract and the lower intestinal tract, the propulsion head can search the intestine in the intestinal tract to automatically adjust the direction, and the connecting tube can be quickly sent to the operation position from the anus of a patient;
(2) the shape of the end part of the propelling head is similar to that of the head of the bullet, so that the intestine is not stabbed (injured), and the smooth operation is ensured;
(3) the suture line can suture and fix the head end of the connecting pipe and the upper end intestinal tract, and the double-ring fixing structure can suture and fix the tail end of the connecting pipe and the interface of the lower section intestinal tract; the suture is stored in the wire groove, so that the suture can be performed when the connecting pipe reaches the operation site, the operation time is shortened, the operation efficiency is improved, and the movement of the pushing head is not interfered; the outer annular rubber tube and the inner annular rubber tube are in abutting fit with each other, so that the lower intestinal tract can be connected with the tail end of the connecting tube more firmly;
(4) the invention has simple and ingenious arrangement and convenient operation, can not cause injury to human body, can quickly send the connecting pipe into the operation position of a patient, shortens the operation time, improves the operation efficiency, and leads the connecting pipe to be more closely connected with the upper intestinal tract and the lower intestinal tract.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the movement of the propulsion head to actuate the connection tube in accordance with the present invention;
FIG. 3 is a schematic view of the fixing structure of the connecting tube and the suture and the double ring at the two ends thereof;
FIG. 4 is a schematic view of a wire groove on the cross section of the head pipe of the connecting pipe of the present invention.
In the figure: 1 locating tube, 2 spiral pipes, 2a straight pipe I, 2b straight pipe II, 3 connecting pipes, 3a wire casing, 3b suture, 3c thread knot, 3d outer annular rubber tube, 3e inner annular rubber tube, 4 propelling heads, 5 fixing covers, 6 check rings, 7 locating air bag rings, 8 inflation tubes and 8a valves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution:
a fixed draw gear of intestinal, including registration arm 1, propulsion hose, connecting pipe 3 and propulsion head 4, fixed lid 5 is installed to the tail end of registration arm 1, the propulsion hose is located registration arm 1, and the middle part that should impel the hose is spiral pipe 2, and the head end is straight pipe I2 a, and the tail end is straight pipe II 2b, it exposes to run through behind fixed lid 5 straight pipe II 2b, connecting pipe 3 is located the intraductal of registration arm 1 head end, and is connected with propulsion head 4 that is located registration arm 1 head end department, straight pipe I2 a is passed by connecting pipe 3 intraductally and is connected with propulsion head 4, propulsion head 4 is the casing that the appearance is bullet head shape, and it can be more rapid to drive connecting pipe 3 to the operation department (upper end intestinal, hypomere intestinal department) at propulsion head 4, and propulsion head 4 tip shape is similar to bullet head, so can not cause the sting pain (hindering) to intestinal, guaranteed that the operation goes on smoothly, the head end of connecting pipe 3 is equipped with stylolite 3b, and the tail end is equipped with dicyclo fixed knot structure, and stylolite 3b can sew up 3 head ends of connecting pipe and upper end intestinal and fix, and dicyclo fixed knot structure can sew up 3 tail ends of connecting pipe and hypomere intestinal kneck fixedly.
The suture fixation of the head end and the upper end of the connecting pipe 3 (shown by dotted lines in fig. 1 and 2 for the sake of clarity) is specifically as follows: the suture line 3b is arranged in the wire groove 3a, is in spacing fit with the wire groove 3a through a line knot 3c, and is accommodated in the wire groove 3a, so that the suture lines 3b with different amounts (lengths) can be accommodated according to intestinal structures of different patients, and the suture lines 3b are accommodated in the wire groove 3a, so that the suture lines 3b can be sutured when the connecting pipe 3 reaches an operation position, the operation time is shortened, the operation efficiency is improved, and the movement of the pushing head 4 is not interfered; as shown in fig. 3, a knot 3c is tied at the end of the suture thread 3d, so that the knot 3c can drive the head end of the connecting pipe 3 at the other end of the suture thread 3d to suture and fix the head end with the upper intestinal tract, the number of the thread grooves 3a depends on the specific use condition, and the unknotted end of the suture thread 3d can be placed in the connecting pipe 3 at the initial state.
Dicyclo fixed knot constructs including outer annular rubber tube 3d and interior annular rubber tube 3e, wherein: the outer annular rubber tube 3d is embedded on the outer wall of the tail end of the connecting tube 3, the inner annular rubber tube 3e is embedded on the inner wall of the tail end of the connecting tube 3, when the tail end of the connecting pipe 3 is connected with the interface of the lower intestinal tract, the outer ring-shaped rubber pipe 3d is firstly taken down from the connecting pipe 3, then the lower section intestinal canal interface is sleeved at the tail end of the connecting pipe 3, then the outer annular rubber pipe 3d is installed back to the original position, at the moment, the inner annular rubber pipe 3e (or the outer annular rubber pipe 3d) is injected with gas, so that the inner annular rubber pipe 3e slightly expands outwards, thereby the tail end of the connecting pipe 3 is tightly connected with the intestinal tract, the outer annular rubber pipe 3d and the inner annular rubber pipe 3e are positioned on the same cross section, like this outer annular rubber tube 3d and interior annular rubber tube 3e support tight fit each other, can make the lower section intestinal more firm with the connection of 3 tail ends of connecting pipe.
A positioning air bag ring 7 and a check ring 6 are sleeved on the positioning tube 1, the positioning air bag ring 7 is close to the head end of the positioning tube 1, and the check ring 6 is close to the tail end of the positioning tube 1; the positioning air bag ring 7 is connected with an inflation tube 8, the inflation tube 8 is arranged in the tube wall of the positioning tube 1, the other end of the inflation tube is exposed, a valve 8a is arranged at the exposed end part of the inflation tube 8, when the positioning tube 1 and the positioning air bag ring 7 are inserted inwards from the anus of a patient to a proper position, and the retainer ring 6 is contacted and attached with the skin on the outer side of the anus of the patient; the positioning air bag ring is connected with an inflating device through an inflating tube 8, a valve 8a is opened, air is injected into the positioning air bag ring 7 through the inflating tube 8, the positioning air bag ring 7 is expanded, the expanded positioning air bag ring 7 and a retainer ring 6 clamp the skin and the muscle of the anus of a patient and are relatively fixed, the valve 8a is closed, and the inflating device is taken down, so that the propelling head 4 can be conveniently operated to drive the connecting tube 3 to be pushed to the operation position of the patient, the positioning tube 1 is provided with an annular groove, the positioning air bag ring 7 is sleeved in the annular groove, and when the positioning air bag ring is not inflated, the top of the positioning air bag ring 7 is flush with the top of the annular groove; because at initial condition, location gasbag circle 7 does not pour into the air into promptly, and location gasbag circle 7 top flushes with the annular top, namely flushes with registration arm 1 outer wall, and location gasbag circle 7 can not cause the interference when registration arm 1 enters into patient's anus like this, and the quick entering of location gasbag circle 7 of being convenient for.
When in use, firstly, lubricating oil is smeared on the head end of the positioning tube 1, the propelling head 4 and the connecting tube 3, the positioning tube 1 and the positioning air bag ring 7 are inserted inwards from the anus of a patient to a proper position, and the retainer ring 6 is contacted and attached with the skin on the outer side of the anus of the patient; the device is connected with an inflating device through an inflating tube 8, a valve 8a is opened, air is injected into a positioning air bag ring 7 through the inflating tube 8, the positioning air bag ring 7 is expanded, the expanded positioning air bag ring 7 and a retainer ring 6 clamp the skin and the muscle of the anus of a patient and are relatively fixed, the valve 8a is closed, the inflating device is taken down, then a straight tube II 2b is connected with the inflating device to enable the inflating device to work, at the moment, the spiral tube 2 is inflated, the straight tube II 2b is fixed on a fixing cover 5, the end part of the straight tube I2 a is closed and has reverse action, so that the straight tube I2 a can propel a propelling head 4, the propelling head 4 can drive the connecting tube 3 to move, the direction of an intestine searching cavity is automatically adjusted until the upper end intestinal tract and the lower end of the intestinal tract are reached, then the inflation is stopped, the propelling head 4 is taken down from the head end of the connecting tube 3, the connecting tube 3 and the upper end of the, then take off outer annular rubber tube 3d from connecting pipe 3 earlier again, then with hypomere intestinal interface sleeve at the 3 tail ends of connecting pipe, then install back original department with outer annular rubber tube 3d, inject gas again to inner annular rubber tube 3e (or also outer annular rubber tube 3d) this moment, make interior annular rubber tube 3e slightly outside inflation to make 3 tail ends of connecting pipe and intestinal zonulae occludens, outer annular rubber tube 3d and interior annular rubber tube 3e are in on same cross section, and outer annular rubber tube 3d and interior annular rubber tube 3e support the tight cooperation each other like this, can make hypomere intestinal and 3 end connection of connecting pipe more durable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a draw gear is fixed to intestinal, includes registration arm (1), impels hose, connecting pipe (3) and impels head (4), its characterized in that: the tail end of the positioning pipe (1) is provided with a fixed cover (5), the propelling hose is positioned in the positioning pipe (1), the middle of the propelling hose is a spiral pipe (2), the head end of the propelling hose is a flat straight pipe I (2a), the tail end of the propelling hose is a flat straight pipe II (2b), the flat straight pipe II (2b) penetrates through the fixed cover (5) and is exposed, the connecting pipe (3) is positioned in the pipe at the head end of the positioning pipe (1) and is connected with a propelling head (4) positioned at the head end of the positioning pipe (1), the end part of the flat straight pipe I (2a) is sealed and is connected with the propelling head (4) through the connecting pipe (3) in a penetrating way, the head end of the connecting pipe (3) is provided with a suture line (3b), the tail end of the connecting pipe is provided with a double-ring fixed structure, a plurality of groups of uniformly distributed wire grooves (3a) are formed in the pipe, and through line knot (3c) and spacing cooperation of wire casing (3a), dicyclo fixed knot constructs including outer annular rubber tube (3d) and interior annular rubber tube (3e), wherein: outer annular rubber tube (3d) inlays and establishes at connecting pipe (3) tail end outer wall, interior annular rubber tube (3e) inlays and establishes at connecting pipe (3) tail end inner wall.
2. The intestinal tract fixation and traction device of claim 1, wherein: the propelling head (4) is a shell with a bullet-shaped appearance.
3. The intestinal tract fixation and traction device of claim 1, wherein: the cover is equipped with location gasbag circle (7) and retaining ring (6) on registration arm (1), location gasbag circle (7) are close to the head end of registration arm (1), the tail end that is close to registration arm (1) in retaining ring (6).
4. The intestinal tract fixation and traction device of claim 1, wherein: the outer annular rubber tube (3d) and the inner annular rubber tube (3e) are positioned on the same cross section.
5. A stationary intestinal traction device according to claim 3, wherein: the positioning air bag ring (7) is connected with an inflation tube (8), the inflation tube (8) is arranged in the tube wall of the positioning tube (1), and the other end of the inflation tube is exposed.
6. A stationary intestinal traction device according to claim 3, wherein: the positioning pipe (1) is provided with an annular groove, the positioning air bag ring (7) is sleeved in the annular groove, and when the positioning air bag ring does not bulge, the top of the positioning air bag ring (7) is flush with the top of the annular groove.
7. An intestinal anchoring traction device according to claim 5, characterized in that: and a valve (8a) is arranged at the exposed end part of the inflation tube (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638768.4A CN110327088B (en) | 2019-07-16 | 2019-07-16 | Intestinal tract fixing and traction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638768.4A CN110327088B (en) | 2019-07-16 | 2019-07-16 | Intestinal tract fixing and traction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110327088A CN110327088A (en) | 2019-10-15 |
| CN110327088B true CN110327088B (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910638768.4A Expired - Fee Related CN110327088B (en) | 2019-07-16 | 2019-07-16 | Intestinal tract fixing and traction device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110327088B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111407346B (en) * | 2020-04-02 | 2020-12-22 | 王建龙 | Intestinal closure device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2218529Y (en) * | 1995-05-10 | 1996-01-31 | 王东 | Muscle tendon leading device |
| CN206836923U (en) * | 2016-12-13 | 2018-01-05 | 江苏省人民医院 | Pancreas duct jejunum anastomotic scaffold plumbing installation |
| CN107661134A (en) * | 2017-09-20 | 2018-02-06 | 中国医学科学院阜外医院 | Purse string suture art pocket tail end tension force fixing device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425738A (en) * | 1992-04-08 | 1995-06-20 | American Cyanamid Company | Endoscopic anastomosis ring insertion device and method of use thereof |
| US20050075656A1 (en) * | 2003-09-30 | 2005-04-07 | Jean Beaupre | Applier for a surgical device |
| CN102500008B (en) * | 2011-10-20 | 2013-04-17 | 王志强 | Self-propelled enema tube |
| CN104306033B (en) * | 2014-10-17 | 2016-08-17 | 华汉巨 | Intestinal wall identification traction apparatus |
| CN204909544U (en) * | 2015-07-15 | 2015-12-30 | 王洛 | Subassembly is rebuild to intestinal |
| CN105411516B (en) * | 2015-12-17 | 2017-06-27 | 纪瑞霞 | A kind of Novel gastroscope outer sleeve |
| CN106073687B (en) * | 2016-08-16 | 2017-09-19 | 江苏瑞上医疗器械有限公司 | Anal intestine is intubated |
| CN107233113A (en) * | 2017-07-11 | 2017-10-10 | 戴晓宇 | Enteron aisle tractor for fixing |
-
2019
- 2019-07-16 CN CN201910638768.4A patent/CN110327088B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2218529Y (en) * | 1995-05-10 | 1996-01-31 | 王东 | Muscle tendon leading device |
| CN206836923U (en) * | 2016-12-13 | 2018-01-05 | 江苏省人民医院 | Pancreas duct jejunum anastomotic scaffold plumbing installation |
| CN107661134A (en) * | 2017-09-20 | 2018-02-06 | 中国医学科学院阜外医院 | Purse string suture art pocket tail end tension force fixing device |
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| CN110327088A (en) | 2019-10-15 |
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Effective date of registration: 20210324 Address after: 266003 Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao City, Shandong Province Applicant after: THE AFFILIATED HOSPITAL OF QINGDAO University Address before: 233002 mohekou Park, Huaishang District, Bengbu City, Anhui Province Applicant before: Tang Wenkai |
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