CN111202554A - Nail pushing plate matched with suturing nail and manufacturing method - Google Patents
Nail pushing plate matched with suturing nail and manufacturing method Download PDFInfo
- Publication number
- CN111202554A CN111202554A CN202010116599.0A CN202010116599A CN111202554A CN 111202554 A CN111202554 A CN 111202554A CN 202010116599 A CN202010116599 A CN 202010116599A CN 111202554 A CN111202554 A CN 111202554A
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- China
- Prior art keywords
- guide plate
- plate
- slope
- guide
- staples
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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
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
Abstract
The invention discloses a nail pushing plate adaptive to suturing nails and a manufacturing method thereof, wherein the nail pushing plate comprises a first guide plate, two second guide plates and two third guide plates, the first guide plate is positioned in the middle of the nail pushing plate, the two second guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged, and the two third guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged; the first guide plate comprises a protruding part, and the protruding part is positioned on the upper surface of the first guide plate and is embedded in the through groove of the nail bin; the side wall of the first guide plate is fixed with the second guide plate through a connecting plate, and the side wall of the second guide plate is fixed with the third guide plate through the connecting plate. The invention can keep the two sides of the nail bin parallel so as to improve the stitching effect.
Description
Technical Field
The invention relates to the field of anastomats, in particular to a nail pushing plate matched with suturing nails and a manufacturing method thereof.
Background
Staplers quickly and efficiently fasten body tissue by driving fasteners or staples into the tissue. When the tissue is cut and sutured, the nail pushing plate horizontally moves forward along the four rows of grooves of the nail bin, the nail pushing plate and the titanium nails in the nail bin are pushed to vertically move upwards in the forward process of the nail pushing plate, the head part of the titanium nails leaves the nail bin to penetrate through the tissue, and then the titanium nails are bent into a B shape to finish the suturing of the tissue when contacting the nail pushing seat of the anastomosis gun.
However, in the prior art, the nail pushing plate is easy to deform due to stress on the U-shaped parallel edges of the nail bin in the sliding process, so that the suturing effect is affected.
Disclosure of Invention
The invention aims to provide a nail pushing plate matched with a suturing nail and a manufacturing method thereof, which can keep two sides of a nail bin parallel to improve the suturing effect.
In order to solve the technical problem, the invention provides a nail pushing plate adaptive to suturing nails, which comprises a first guide plate, two second guide plates and two third guide plates, wherein the first guide plate is positioned in the middle of the nail pushing plate, the two second guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged, and the two third guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged; the first guide plate comprises a protruding part, and the protruding part is positioned on the upper surface of the first guide plate and is embedded in the through groove of the nail bin; the side wall of the first guide plate is fixed with the second guide plate through a connecting plate, and the side wall of the second guide plate is fixed with the third guide plate through the connecting plate.
Further, the side wall of the protruding portion is perpendicular to the upper surface of the first guide plate.
Furthermore, the second guide plate and the third guide plate comprise a first inclination, a second inclination and a third inclination which are distributed from the bottom surface to the upper surface in sequence, the first inclination is greater than the second inclination, and the second inclination is greater than the third inclination.
Further, the first inclination is 30-45 degrees.
Further, the second inclination is 18-30 degrees.
Further, the third slope is 0 °.
Further, a cavity is formed in the bottom of the first guide plate and is located below the protruding portion.
Further, the surface roughness of the first guide plate, the second guide plate and the third guide plate is less than Ra 1.
Another object of the present invention is to provide a method for manufacturing the staple pusher plate adapted to staples, comprising the steps of:
s1, uniformly mixing the metal powder and the sintered resin according to a wet method to prepare blank powder; wherein the mass ratio of the metal powder to the sintering resin is 22: (2-3);
s2, injecting the blank powder into the mold;
s3, heating the die to 1800-2200 ℃, pressurizing to 1-5 MPa, and keeping for 7-15min until sintering and molding.
Further, step S0 is included before step S1,
s0, preparing the metal powder by using a redox method.
The invention has the beneficial effects that:
in the process of pushing the suturing nails by using the nail pushing plate, the first guide plate can be embedded in the through groove in the middle of the nail bin, so that the moving direction of the nail pushing plate can be limited; second deflector and third deflector all set up about the first deflector symmetry, therefore the atress of the in-process nail storehouse that promotes to sew up the nail and sew up nail both sides is even to the precision of position when can improving to sew up the nail motion, in order to guarantee sutural quality.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a cross-sectional view of a second guide plate according to the present invention;
FIG. 3 is a cross-sectional view of a third guide plate in the present invention;
fig. 4 is a sectional view of the first guide plate used in the present invention.
The reference numbers in the figures illustrate: 1. a first guide plate; 11. a projection; 12. a cavity; 2. a second guide plate; 3. a third guide plate; 4. a connecting plate; 51. a first slope; 52. a second slope; 53. a third slope.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1-4, an embodiment of a staple pushing plate for fitting staples according to the present invention includes a first guide plate 1, two second guide plates 2 and two third guide plates 3 arranged in parallel, wherein the first guide plate 1 is located in the middle of the staple pushing plate, the two second guide plates 2 are respectively located at two sides of the first guide plate 1, and the two second guide plates 2 are symmetrically arranged with respect to the first guide plate 1; meanwhile, the two third guide plates 3 are respectively positioned at two sides of the first guide plate 1, and the two second guide plates 2 are symmetrically arranged about the first guide plate 1. One side of ejector pad in this embodiment arranges in proper order to the edge by the middle part according to first deflector 1, second deflector 2 and third deflector 3. In the process of pushing the suturing nails by using the nail pushing plate, the first guide plate 1 can be embedded in the through groove in the middle of the nail bin, so that the moving direction of the nail pushing plate can be limited. Second deflector 2 and third deflector 3 all set up about 1 symmetry of first deflector, therefore the atress of the in-process nail storehouse that promotes to sew up the nail and sew up nail both sides is even to the precision of position when can improving to sew up the nail motion, in order to guarantee sutural quality.
The first guide plate 1 comprises a protrusion 11, and the protrusion 11 is located on the upper surface of the first guide plate 1, so that the protrusion 11 can be embedded in the nail bin when the first guide plate 1 is mated with the nail bin. The bulge 11 is embedded in the through groove, so that the resistance of the nail pushing plate during movement can be reduced on the premise of limiting the movement direction of the nail pushing plate.
The side walls of the projections 11 are arranged perpendicular to the upper surface of the first guide plate 1, so that the resistance to the movement of the ejector plate can be further reduced. In addition, the joint of the protruding portion 11 and the upper surface of the first guide plate 1 is provided with a rounded corner, and thus stress concentration at the time of molding can be reduced.
In this embodiment, the side wall of the first guide plate 1 is fixed to the side wall of the second guide plate 2 through the connecting plate 4, and the connecting plate 4 is perpendicular to both the first guide plate 1 and the second guide plate 2. The side wall of the second guide plate 2 is fixed with the second guide plate 2 through the connecting plate 4, and the connecting plate 4 is perpendicular to the second guide plate 2 and the third guide plate 3. In the process of cutting and suturing tissues, the bottom surface of the nail pushing plate is in contact with the surface of the nail bin, so that the first guide plate 1, the second guide plate 2 and the third guide plate 3 are fixed by the connecting plate 4, the contact area of the nail pushing plate and the nail bin can be effectively reduced, and the resistance of the nail pushing plate during movement is reduced.
The two second guide plates 2 and the two third guide plates 3 comprise a first slope 51, a second slope 52 and a third slope 53 which are arranged in sequence from the bottom surface to the upper surface, and the joints of the first slope 51, the second slope 52 and the third slope 53 are arranged in a round angle mode, so that the forming is facilitated, and the stress concentration of the joints after the forming can be reduced. In addition, the first slope 51 is greater than the second slope 52, and the second slope 52 is greater than the third slope 53. When the nail pushing plate pushes the suturing nails in the nail bin groove to move vertically, the suturing nails approximately sequentially pass through 3 stages under the action of the nail pushing plate. The first stage staples penetrate the tissue, the second stage staples are B-shaped staple tissue, and the third stage holds the B-shaped staple steady. When the staples are in the first stage, the force required to penetrate the staples through the tissue is less and thus the first ramp 51 is at a maximum. The force required to bend and form the staple into a B-shape in the second stage is greater than in the first stage, so that the second slope 52 is less than the first slope 51 and so can be advanced slowly to reduce deformation of the pusher plate.
Further, a third inclination 53 is 0, and the third stage is to maintain the staple in a B-shape, so that no vertical displacement is required.
The first slope 51 in this embodiment is 30-45, and within this range, the ejector plate facilitates both the pushing of staples and the forming of the ejector plate. The second slope 52 is 18-30 deg., and within this range, the deformation of the pusher plate when the staple is bent into the B-shape is reduced.
Further, the bottom of the first guide plate 1 is opened with a cavity 12, and the cavity 12 is located below the projection 11. The cavity 12 positioned at the oblique lower part of the guide plate is convenient for forming the nail pushing plate and is also convenient for ensuring the wall thickness of the nail pushing plate to be consistent as much as possible; the mass of the ejector pin plate can be reduced.
A method of manufacturing the above described ejector plate, comprising the steps of:
s0, preparing metal powder by using a redox method; 316L stainless steel is adopted as the metal powder in the embodiment;
s1, uniformly mixing the metal powder and the sintered resin according to a wet method to prepare blank powder; wherein the mass ratio of the metal powder to the sintering resin is 22: (2-3); the metal powder can adopt stainless steel powder of 1Cr13, 2Cr13, 1Cr17Mo, 00Cr17Ni14Mo2 or 0Cr17N14Cu4 Nb;
s2, injecting the blank powder into the mold;
s3, heating the die to 1800-2200 ℃, pressurizing to 1-5 MPa, and keeping for 7-15min until sintering and molding.
The roughness of the sintered surface of the ejector pin plate manufactured according to the steps is less than Ra1, so that the use requirement of the ejector pin plate is met, and the surface of the ejector pin plate does not need to be subjected to further polishing treatment.
In addition, the nail pushing plate formed by sintering the metal powder has better strength and wear resistance, so that the deformation of the nail pushing sheet is smaller in the process of pressing, the relative accuracy of the positions of the nail pushing plate and the nail bin is ensured, and the resistance and the friction force of the nail pushing plate during movement are reduced. Meanwhile, the deformation of the nail pushing plate after being stressed is small, so that the trigger resistance of the anastomat is low, and the use experience effect is improved.
The metal powder sintering molding is utilized to avoid the situations of burrs and the like of the nail pushing plate, and the processing after the later molding is reduced. Meanwhile, the surface of the nail pushing plate formed by powder metallurgy has the self-lubricating effect, so that the friction force of the nail pushing plate during movement can be reduced under the condition of limited lubrication.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The nail pushing plate matched with the suturing nails is characterized by comprising a first guide plate, two second guide plates and two third guide plates, wherein the first guide plate is positioned in the middle of the nail pushing plate, the two second guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged, and the two third guide plates are respectively positioned on two sides of the first guide plate and are symmetrically arranged; the first guide plate comprises a protruding part, and the protruding part is positioned on the upper surface of the first guide plate and is embedded in the through groove of the nail bin; the side wall of the first guide plate is fixed with the second guide plate through a connecting plate, and the side wall of the second guide plate is fixed with the third guide plate through the connecting plate.
2. The staple pusher plate for fitting staples of claim 1, wherein the side walls of said tabs are disposed perpendicular to the upper surface of said first guide plate.
3. The staple pusher plate for fitting staples of claim 1, wherein each of the second guide plate and the third guide plate comprises a first slope, a second slope and a third slope from bottom to top in sequence, the first slope being greater than the second slope, and the second slope being greater than the third slope.
4. The staple pusher plate for fitting staples of claim 3, wherein said first slope is 30 ° -45 °.
5. The pusher plate for fitting staples of claim 3 wherein said second slope is 18 ° to 30 °.
6. The staple pusher plate for fitting staples of claim 3, wherein said third slope is 0 °.
7. The ejector plate for fitting staples of claim 1, wherein a cavity is formed in a bottom of the first guide plate, and the cavity is located below the projection.
8. The staple pusher plate for fitting staples of claim 1, wherein the surface roughness of said first guide plate, said second guide plate and said third guide plate is less than Ra 1.
9. A method of manufacturing a staple pusher plate for fitting staples as claimed in any of claims 1-8, comprising the steps of:
s1, uniformly mixing the metal powder and the sintered resin according to a wet method to prepare blank powder; wherein the mass ratio of the metal powder to the sintering resin is 22: (2-3);
s2, injecting the blank powder into the mold;
s3, heating the die to 1800-2200 ℃, pressurizing to 1-5 MPa, and keeping for 7-15min until sintering and molding.
10. The staple pusher plate for fitting staples of claim 9, comprising step S0 before step S1,
s0, preparing the metal powder by using a redox method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010116599.0A CN111202554A (en) | 2020-02-25 | 2020-02-25 | Nail pushing plate matched with suturing nail and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010116599.0A CN111202554A (en) | 2020-02-25 | 2020-02-25 | Nail pushing plate matched with suturing nail and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111202554A true CN111202554A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010116599.0A Pending CN111202554A (en) | 2020-02-25 | 2020-02-25 | Nail pushing plate matched with suturing nail and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111202554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112641481A (en) * | 2020-12-29 | 2021-04-13 | 美科特医疗科技(苏州)有限公司 | Nail bin assembly of anastomat |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004147702A (en) * | 2002-10-28 | 2004-05-27 | Top:Kk | Suturing instrument |
| CN101502429A (en) * | 2007-08-30 | 2009-08-12 | Tyco医疗健康集团 | Staple drive assembly |
| CN101518458A (en) * | 2008-02-28 | 2009-09-02 | 伊西康内外科公司 | Staple cartridges for forming staples having differing formed staple heights |
| CN103829984A (en) * | 2014-03-07 | 2014-06-04 | 常州威克医疗器械有限公司 | Suturing nail pushing block subassembly |
| CN107714121A (en) * | 2017-11-13 | 2018-02-23 | 江苏孜航精密五金有限公司 | Resist-nailed seat component of disposable hysteroscope internal cutting stapler and preparation method thereof |
| CN109414262A (en) * | 2016-06-24 | 2019-03-01 | 伊西康有限责任公司 | Nail bin punching press nail and followed closely using punching press |
| CN211934170U (en) * | 2020-02-25 | 2020-11-17 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Nail pushing plate adaptive to suturing nails |
-
2020
- 2020-02-25 CN CN202010116599.0A patent/CN111202554A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004147702A (en) * | 2002-10-28 | 2004-05-27 | Top:Kk | Suturing instrument |
| CN101502429A (en) * | 2007-08-30 | 2009-08-12 | Tyco医疗健康集团 | Staple drive assembly |
| CN101518458A (en) * | 2008-02-28 | 2009-09-02 | 伊西康内外科公司 | Staple cartridges for forming staples having differing formed staple heights |
| CN103829984A (en) * | 2014-03-07 | 2014-06-04 | 常州威克医疗器械有限公司 | Suturing nail pushing block subassembly |
| CN109414262A (en) * | 2016-06-24 | 2019-03-01 | 伊西康有限责任公司 | Nail bin punching press nail and followed closely using punching press |
| CN107714121A (en) * | 2017-11-13 | 2018-02-23 | 江苏孜航精密五金有限公司 | Resist-nailed seat component of disposable hysteroscope internal cutting stapler and preparation method thereof |
| CN211934170U (en) * | 2020-02-25 | 2020-11-17 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Nail pushing plate adaptive to suturing nails |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112641481A (en) * | 2020-12-29 | 2021-04-13 | 美科特医疗科技(苏州)有限公司 | Nail bin assembly of anastomat |
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