CN108143466A - A kind of fastening stomach and intestine are cut - Google Patents
A kind of fastening stomach and intestine are cut Download PDFInfo
- Publication number
- CN108143466A CN108143466A CN201711325770.3A CN201711325770A CN108143466A CN 108143466 A CN108143466 A CN 108143466A CN 201711325770 A CN201711325770 A CN 201711325770A CN 108143466 A CN108143466 A CN 108143466A
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- CN
- China
- Prior art keywords
- cut
- temperature
- forging
- stomach
- intestine
- 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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3201—Scissors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/022—Metals or alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00818—Treatment of the gastro-intestinal system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
Abstract
The invention discloses a kind of fastening stomach and intestine to cut, and belongs to medical field, including：First cuts handle（1）Handle is cut with second（2）, described first, which cuts handle and first, cuts and is cut stomach and intestine are hingedly formed；Miniature webcam is equipped on the inside of the tough portion in end two that the stomach and intestine are cut（4）, the miniature webcam and tough portion are into a plane.
Description
Technical field
The present invention relates to field of medical products.
Background technology
Gastrointestinal surgery is mainly engaged in the treatment based on operation on digestive tract, and the surgery including various GI benign lesions is controlled
It treats（Intestinal obstruction, hemorrhage of digestive tract, Alimentary Tract Perforation, gastroduodenal ulcer, inflammatory bowel disease, congenital megacolon, acute and chronic
The surgical intervention of appendicitis, reflux esophagitis）And gastrointestinal tract innocent and malignant tumour（Radical operation for carcinoma of stomach, radical resection for colorectal cancer,
Intestinal tumor excision, total gastrectomy）.Advocate " people-oriented ", pay attention to the quality of life of postoperative patients, low level anusreserved surgery
Etc. reaching advanced level inside the province.
It is frequently necessary to use stomach and intestine in gastrointestinal surgery and cut, existing operating scissors are mainly by two simple shear body structures
Into with the clamping of one value of hand in the process cut so that hand is easily tired.
Although having shadowless lamp simultaneously, it is also difficult to accurate observation at that time and wants corresponding hoc scenario.
Invention content
It is an object of the invention to：In view of the above problems, a kind of stomach and intestine are provided to cut, which is characterized in that including：
First cuts handle and second cuts handle, and described first, which cuts handle and first, cuts and cut stomach and intestine are hingedly formed；What the stomach and intestine were cut
Miniature webcam, the miniature webcam and tough portion are equipped on the inside of the tough portion in end two into a plane；
Described second is cut is equipped with latch upper cutting at handle, latch is strip structure, and continuous tooth is equipped on strip structure
Mouthful；
Described first, which is cut, to be hinged upper there are one adjusting rod, and described adjusting rod one end and first is cut being hinged, and the other end is set
There is the protrusion that can be stuck in tooth mouth；Described first is cut sets that there are one be capable of the card slot of secured adjusted bar, the card on
Slot is made of rubber material, and centre is set there are one channel structure, can fix adjusting rod.
Stomach and intestine of the present invention are cut in the process of clamping, and adjusting rod can be blocked by latch, is further passed through
Adjusting rod is cut to clamp stomach and intestine, avoids the fatigue of hand.In the case where not needing to secured mode, adjusting rod can be fixed on card slot
In, preventer influences operation.
The stomach and intestine clipper of the present invention has visual function, and the tissue view before cutting is transmitted to external show by miniature webcam
In display screen, doctor being capable of more exact operations by display information.
As an improvement, the adjusting rod includes the first adjusting rod, the first adjusting rod and pivoted housing, first adjusting rod
Screw thread is equipped with the outer surface of the second adjusting rod, the inner wall of the pivoted housing is equipped with screw thread, and the first adjusting rod and second are adjusted
Bar is threadedly coupled respectively with pivoted housing, rotates pivoted housing, and the length of adjusting rod can change.
By adjusting the length of adjusting rod, it can facilitate and the stomach and intestine of clamping are cut into release.
As an improvement, the stomach and intestine are cut by Ni-Fe based high-temperature alloy material preparations.
As an improvement, the high-temperature alloy material includes following alloying element：C：0.04-0.05%、Fe：19.0-21.0%、
Cr：19.5-20.5%、Al:0.90-1.05%、Ti：2.65-2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-
1.70%、Y+Ce：0.046-0.058%、B：0.003-0.006%, surplus are Ni and other impurity.
As an improvement, high-temperature alloy material includes the P and S that mass fraction is less than 0.024%, the high-temperature alloy material is also
Including following alloying element：C：0.047%、Fe：20.3%、Cr：19.9%、Al:0.96%、Ti：2.74%、V：0.25%、Mo：
2.3%、Nb：1.63%、Y+Ce：0.051%、B：0.005%, surplus is Ni and other impurity.
As an improvement, include the following steps：
1）Weigh raw material by component percentages, using it is existing smelt high temperature alloy preparation process, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface obtains forging blank, and wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to forge, room temperature is air-cooled to after forging, and be surface-treated；
4）By after surface treatment forge piece carry out solid-solution and aging heat treatment after to obtain the final product.
As an improvement, in step 3）In, forging temperature is 1200-1250 DEG C, time 2-3h, starting forging temperature 1150
DEG C, it is 850 DEG C to stop forging temperature.
As an improvement, after forging blank reaches forging temperature, it will forge blank upsetting pull using forge press and become shape forging
Forging base is formed, wherein, fire time is 4, and forging ratio is controlled in 6.2-6.5, and upsetting pull process need to respectively carry out 3 times.
As an improvement, in step 3）In, forging base be cooled to stop forge temperature after, continue to send into forge press upsetting pull become
Die forging causes certain thickness alloy slab, and fire time is 4, and forging ratio is controlled in 2.0-2.3, and upsetting pull process need to respectively carry out 3 times.
As an improvement, in step 4）In, the detailed process of solid-solution and aging heat treatment is：Solid solubility temperature is 1100-1150 DEG C,
Keep the temperature 2h, oil cooling；700-750 DEG C of an aging temperature keeps the temperature 20-25h, air-cooled；Secondary ageing treatment temperature 660-680
DEG C, 20-25h is kept the temperature, it is air-cooled.
The stomach and intestine of material preparation disclosed by the invention cut that intensity is big, rigidity is big, endurance, in high-temperature sterilization process not
Internal modification easily occurs, service life is long.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the schematic diagram of adjusting rod of the present invention；
Fig. 3 is the schematic diagram of miniature webcam；
It is marked in figure：1- first cuts handle, 101- card slots, and 2- second cuts handle, 201- latches, 3- adjusting rods, the first adjusting rods of 301-,
The second adjusting rods of 302-, 303- pivoted housings, 4- miniature webcams.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific embodiment 1：As shown in Figs. 1-2, a kind of stomach and intestine of the present invention are cut, including：First cuts 1 and second is cut 2, institute
First stated cuts handle and first and cuts and cut stomach and intestine are hingedly formed；It is equipped on the inside of the tough portion in end two that the stomach and intestine are cut micro-
Type camera 4, the miniature webcam and tough portion are into a plane；Described second is cut is equipped with latch cutting on 2 at handle
201, latch is strip structure, and continuous tooth mouth is equipped on strip structure；Described first cuts upper that hinged there are one adjust
Bar 3, described adjusting rod one end and first are cut being hinged, and the other end is equipped with the protrusion that can be stuck in tooth mouth.Described first
It cuts and is set on there are one the card slot 101 of secured adjusted bar 3 is capable of, the card slot is made of rubber material, there are one centre is set
Channel structure can fix adjusting rod.
The adjusting rod 3 includes the first adjusting rod 301, the first adjusting rod 302 and pivoted housing 303, and described first is adjusted
The outer surface of bar and the second adjusting rod is equipped with screw thread, and the inner wall of the pivoted housing is equipped with screw thread, and the first adjusting rod and second are adjusted
Pole is threadedly coupled respectively with pivoted housing, rotates pivoted housing, and the length of adjusting rod can change.
Specific embodiment 2：A kind of Ni-Fe based high-temperature alloys material, by mass percentage, the high-temperature alloy material packet
Include following alloying element：C：0.04-0.05%、Fe：19.0-21.0%、Cr：19.5-20.5%、Al:0.90-1.05%、Ti：
2.65-2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-1.70%、Y+Ce：0.046-0.058%、B：0.003-
0.006%, surplus is Ni and other impurity.Wherein, high-temperature alloy material further includes the P and S that mass fraction is less than 0.024%.
The preparation method of above-mentioned Ni-Fe based high-temperature alloy materials, includes the following steps：
1）Weigh raw material by component percentages, using it is existing smelt high temperature alloy preparation process, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface obtains forging blank, and wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to forge, room temperature is air-cooled to after forging, and be surface-treated；
4）By after surface treatment forge piece carry out solid-solution and aging heat treatment after to obtain the final product.
In step 3）In, forging temperature is 1200-1250 DEG C, time 2-3h, and starting forging temperature is 1150 DEG C, stops forging temperature
It is 850 DEG C.Starting forging temperature and the selection for stopping forging temperature are extremely important, in addition to being required according to the selection of conventional forging temperature, centainly
It is noted that the width range of forging temperature and the terminal of forging temperature, the terminal of forging temperature is excessively high, and forging blank is not easy
The fine and closely woven tissue of crystal grain is obtained, mechanical property is poor, and the terminal of forging temperature is too low, then phase transformation crackle easily occurs, in this hair
In bright, forging temperature be 1200-1250 DEG C, starting forging temperature be 1150 DEG C, stop forge temperature be 850 DEG C when, forging blank be easy to get to
Satisfactory forging.
The forging base that crack defect is few in order to obtain, crystal grain is fine and closely woven and is evenly distributed, after forging blank reaches forging temperature,
Blank upsetting pull, which will be forged, using forge press becomes shape forging formation forging base, wherein, fire time is 4, and forging ratio control is in 6.2-
6.5, upsetting pull process need to respectively carry out 3 times.
Further, in step 3）In, forging base be cooled to stop forge temperature after, continue to send into forge press upsetting pull become
Die forging causes certain thickness alloy slab, and fire time is 4, and forging ratio is controlled in 2.0-2.3, and upsetting pull process need to respectively carry out 3 times, with
Final getable alloy slab metallographic structure is made more to refine, is more evenly distributed, the defects of gentle hole clip of flawless is miscellaneous exists.
Further, in step 4）In, the detailed process of solid-solution and aging heat treatment is：Solid solubility temperature is 1100-1150 DEG C,
Keep the temperature 2h, oil cooling；700-750 DEG C of an aging temperature keeps the temperature 20-25h, air-cooled；Secondary ageing treatment temperature 660-680
DEG C, 20-25h is kept the temperature, it is air-cooled.
In order to which the present invention is better described, table 1 lists section Example：
1 Ni-Fe based high-temperature alloys material composi of table and content（Impurity is omitted herein）
The main performance of Ni-Fe based high-temperature alloys material is as shown in table 2 made from above-described embodiment：
The main performance of 2 embodiment 1-5 final alloy materials of table
Note：1st, toughness is measured by Charpy impact machine tester；
2nd, etching extent uses 65% nitric acid corrosion tests, that is, is put into sample in 65% salpeter solution of boiling when testing continuous
48h is a cycle, in totally 5 periods, finally calculates average corrosion rate, wherein, sample is in its cooling at 750-850 DEG C
To 100 DEG C or so rear experiments.
It can be obtained by table 2, at 850 DEG C, the tensile strength of Ni-Fe based high-temperature alloy materials of the invention reaches
1270N/mm2, yield strength reaches 1030 N/mm2, toughness reaches 12.1 J/cm2, the rate of corrosion minimum 0.031 mm/ months.
Claims (10)
1. a kind of fastening stomach and intestine are cut, which is characterized in that including：
First cuts handle（1）Handle is cut with second（2）, described first, which cuts handle and first, cuts and is cut stomach and intestine are hingedly formed；The stomach
Miniature webcam is equipped on the inside of the tough portion in end two of intestinal scissors（4）, the miniature webcam and tough portion are into a plane；
Described second cuts handle（2）On cut at handle be equipped with latch（201）, latch is strip structure, is equipped on strip structure
Continuous tooth mouth；
Described first cuts upper that hinged there are one adjusting rods（3）, described adjusting rod one end and first is cut hinged, the other end
Equipped with the protrusion that can be stuck in tooth mouth；
Described first, which is cut, to be set on there are one being capable of secured adjusted bar（3）Card slot（101）, the card slot is by rubber material
It is made, centre is set there are one channel structure, can fix adjusting rod.
2. stomach and intestine according to claim 1 are cut, which is characterized in that the adjusting rod（3）Including the first adjusting rod
（301）, the first adjusting rod（302）And pivoted housing（303）, first adjusting rod and the outer surface of the second adjusting rod are equipped with spiral shell
Line, the inner wall of the pivoted housing are equipped with screw thread, and the first adjusting rod and the second adjusting rod are threadedly coupled respectively with pivoted housing, and rotation turns
Set, the length of adjusting rod can change.
3. cut according to claim 1-2 any one of them stomach and intestine, which is characterized in that the stomach and intestine are cut by Ni-Fe base high temperature
It is prepared by alloy material.
4. stomach and intestine according to claim 3 are cut, which is characterized in that it is characterized in that, the high-temperature alloy material include with
Lower alloying element：C：0.04-0.05%、Fe：19.0-21.0%、Cr：19.5-20.5%、Al:0.90-1.05%、Ti：2.65-
2.80%、V：0.20-0.30%、Mo：2.0-2.5%、Nb：1.50-1.70%、Y+Ce：0.046-0.058%、B：0.003-
0.006%, surplus is Ni and other impurity.
5. stomach and intestine as claimed in claim 4 are cut, which is characterized in that high-temperature alloy material includes mass fraction and is less than 0.024%
P and S, the high-temperature alloy material further include following alloying element：C：0.047%、Fe：20.3%、Cr：19.9%、Al:0.96%、
Ti：2.74%、V：0.25%、Mo：2.3%、Nb：1.63%、Y+Ce：0.051%、B：0.005%, surplus is Ni and other impurity.
6. stomach and intestine as claimed in claim 5 are cut, which is characterized in that are included the following steps：
1）Weigh raw material by component percentages, using it is existing smelt high temperature alloy preparation process, in vaccum sensitive stove in
Melting is carried out at 1500 DEG C, solution pours into alloy casting blank；
2）Alloy casting blank is subjected to removing surface, be subsequently placed in vacuum furnace be heated to 810-820 DEG C and remove alloy casting
The oxide skin on base surface obtains forging blank, and wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to forge, room temperature is air-cooled to after forging, and be surface-treated；
4）By after surface treatment forge piece carry out solid-solution and aging heat treatment after to obtain the final product.
7. stomach and intestine as claimed in claim 6 are cut, which is characterized in that in step 3）In, forging temperature is 1200-1250 DEG C, when
Between for 2-3h, starting forging temperature is 1150 DEG C, and it is 850 DEG C to stop forging temperature.
8. stomach and intestine as claimed in claim 7 are cut, which is characterized in that after forging blank reaches forging temperature, are forged soon using oil pressure
Machine will forge blank upsetting pull and become shape forging formation forging base, wherein, fire time is 4, and forging ratio is controlled in 6.2-6.5, and upsetting pull process needs
It carries out 3 times respectively.
9. stomach and intestine as claimed in claim 8 are cut, which is characterized in that in step 3）In, forging base be cooled to stop forge temperature after, after
Continuing and upsetting pull deformation is sent into forge press to be forged into certain thickness alloy slab, fire time is 4, and forging ratio is controlled in 2.0-2.3,
Upsetting pull process need to respectively carry out 3 times.
10. stomach and intestine as claimed in claim 9 are cut, which is characterized in that in step 4）In, the detailed process of solid-solution and aging heat treatment
For：Solid solubility temperature is 1100-1150 DEG C, keeps the temperature 2h, oil cooling；700-750 DEG C of an aging temperature keeps the temperature 20-25h, empty
It is cold；660-680 DEG C of secondary ageing treatment temperature keeps the temperature 20-25h, air-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711325770.3A CN108143466A (en) | 2017-12-13 | 2017-12-13 | A kind of fastening stomach and intestine are cut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711325770.3A CN108143466A (en) | 2017-12-13 | 2017-12-13 | A kind of fastening stomach and intestine are cut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108143466A true CN108143466A (en) | 2018-06-12 |
Family
ID=62467057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711325770.3A Withdrawn CN108143466A (en) | 2017-12-13 | 2017-12-13 | A kind of fastening stomach and intestine are cut |
Country Status (1)
| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972752A (en) * | 1971-09-28 | 1976-08-03 | Creusot-Loire | Alloys having a nickel-iron-chromium base for structural hardening by thermal treatment |
| US5674244A (en) * | 1991-07-09 | 1997-10-07 | Synthes (U.S.A.) | Locking device on a pliers-shaped tool |
| CN102171373A (en) * | 2008-10-02 | 2011-08-31 | 住友金属工业株式会社 | Ni-based heat-resistant alloy |
| CN104921765A (en) * | 2015-05-28 | 2015-09-23 | 苏州瑞华医院有限公司 | Microsurgical point-spreading forceps |
| CN204723138U (en) * | 2015-04-13 | 2015-10-28 | 无锡市第二人民医院 | A kind of pin hole shooting Minimally Invasive Surgery pincers |
| CN106521243A (en) * | 2016-12-05 | 2017-03-22 | 四川六合锻造股份有限公司 | Ni-Cr-Mo-Nb-Al-Ti series high temperature alloy material, and preparation method and application thereof |
-
2017
- 2017-12-13 CN CN201711325770.3A patent/CN108143466A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972752A (en) * | 1971-09-28 | 1976-08-03 | Creusot-Loire | Alloys having a nickel-iron-chromium base for structural hardening by thermal treatment |
| US5674244A (en) * | 1991-07-09 | 1997-10-07 | Synthes (U.S.A.) | Locking device on a pliers-shaped tool |
| CN102171373A (en) * | 2008-10-02 | 2011-08-31 | 住友金属工业株式会社 | Ni-based heat-resistant alloy |
| CN204723138U (en) * | 2015-04-13 | 2015-10-28 | 无锡市第二人民医院 | A kind of pin hole shooting Minimally Invasive Surgery pincers |
| CN104921765A (en) * | 2015-05-28 | 2015-09-23 | 苏州瑞华医院有限公司 | Microsurgical point-spreading forceps |
| CN106521243A (en) * | 2016-12-05 | 2017-03-22 | 四川六合锻造股份有限公司 | Ni-Cr-Mo-Nb-Al-Ti series high temperature alloy material, and preparation method and application thereof |
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Application publication date: 20180612 |