CN114434104B

CN114434104B - Processing method of staple cartridge base for anastomat

Info

Publication number: CN114434104B
Application number: CN202210102319.XA
Authority: CN
Inventors: 浦晓冬; 马进; 谢威; 林亮
Original assignee: Baoma Medical Technology Wuxi Co ltd
Current assignee: Baoma Medical Technology Wuxi Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-04-25
Anticipated expiration: 2042-01-27
Also published as: CN114434104A

Abstract

The invention discloses a processing method of a nail box base for a stapler, which comprises the following steps: s10: preparing raw materials, namely selecting stainless steel bars with proper sizes; s20: aging treatment, namely eliminating internal stress of the bar; s30: CNC rough machining is performed to form a base blank; s40: CNC finish machining is carried out, and accurate milling of the front side and the back side is carried out; s50: hardening and tempering, and hardening a workpiece; s60: grinding the surface and cleaning; s70: and (5) inspecting the finished product and warehousing. The processing method of the nail box base for the anastomat is used for manufacturing the nail box base made of stainless steel, improves the surface forming quality of the nail box base and the properties of finished products such as hardness, strength, toughness and plasticity through various processes, ensures that the processed nail box base is more stable and durable, has high precision and good nail forming effect, and meets the use requirements of medical industry.

Description

Processing method of staple cartridge base for anastomat

Technical Field

The invention relates to the technical field of anastomat, in particular to a processing method of a nail box base for an anastomat.

Background

The anastomat is designed and used according to the principle of a stapler, a surgical instrument for replacing traditional manual cutting and suturing in a surgical operation is provided with a cutting assembly as a corresponding core component, the cutting assembly consists of a nail box base, a staple, a nail supporting seat, a cutting knife, a push piece outer sleeve, an assembly protecting cover, a transmission rod and the like, and the core component is the nail supporting seat and the nail box base. The quality of the nail pushing seat and the nail box base directly influence the nail forming effect of the anastomat, and the processing method of the nail pushing seat and the nail box base directly influence the quality of the final anastomat.

The existing processing process flow of the nail box base on the market is simple, the processed finished product is poor in quality and precision, the nail forming effect is poor after the nail box base is mounted on the anastomat, and the final use effect of the anastomat is affected.

Disclosure of Invention

Based on the above problems, the present invention aims to provide a processing method of a staple cartridge base for a stapler, which makes the processed staple cartridge base more stable and has better stapling effect.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a method of processing a magazine base for a stapler, comprising the steps of:

step S10: preparing raw materials, namely selecting stainless steel bars with proper sizes;

step S20: aging treatment, namely eliminating internal stress of the bar;

step S30: CNC rough machining is performed to form a base blank;

step S40: CNC finish machining is carried out, and accurate milling of the front side and the back side is carried out;

step S50: hardening and tempering, and hardening a workpiece;

step S60: grinding the surface and cleaning;

step S70: and (5) inspecting the finished product and warehousing.

In particular, in the step S20, the bar is put into a high-temperature furnace for tempering, the tempering temperature is 480-550 ℃, and the heat preservation is carried out for 1-2 hours.

Specifically, in step S60, a grit sandpaper having a suitable thickness coefficient is selected, and the surface of the workpiece is polished to eliminate machining flaws, and then subjected to surface treatment by vibration polishing.

Specifically, the vibration grinding is a vibration grinding treatment with stones or steel needles.

Particularly, in the step S50, the workpiece is put into a high-temperature furnace for quenching, the quenching temperature is 950-1050 ℃, the heat preservation is carried out for 2-5 hours, the workpiece is taken out and cooled to below 350 ℃, and then air cooling is carried out; and (3) placing the quenched workpiece into a high-temperature furnace for tempering, wherein the tempering temperature is 650-700 ℃, preserving heat for 2-3 hours, cooling to 200-250 ℃ along with the furnace, and then performing air cooling.

Specifically, the annealing pretreatment is carried out before quenching, the annealing temperature is 740-760 ℃, the annealing time is 2.5-3.5 h, then the annealing is carried out along with the furnace cooling to 350-400 ℃, and the annealing is carried out after the annealing is carried out, and the air cooling is carried out for 2-3 h.

In particular, in step S10, the bar is cut from a stainless steel bar, and a raw material inspection is performed.

In particular, before step S20, step S11 is further included: surface treatment, namely washing off greasy dirt on the surface of the bar.

Specifically, after step S40, step S41 is further included: and (5) deburring.

In particular, before step S50, step S42 is further included: and (5) checking the size, and ensuring that a proper grinding allowance is reserved on the workpiece.

In summary, the processing method of the staple cartridge base for the anastomat has the beneficial effects that the staple cartridge base made of stainless steel is manufactured, and the surface forming quality of the staple cartridge base and the performances of finished product hardness, strength, toughness, plasticity and the like are improved through various processes, so that the processed staple cartridge base is more stable and durable, has high precision and good staple forming effect, and meets the use requirements of the medical industry.

Drawings

FIG. 1 is a flow chart of a method of processing a staple cartridge chassis for a stapler provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the CNC rough machining in the machining method of the magazine base for a stapler according to the first embodiment of the present invention;

FIG. 3 is a second schematic diagram of CNC rough machining in the machining method of the magazine base for a stapler according to the embodiment of the present invention;

FIG. 4 is a schematic view of a CNC finish machining front face forming in a machining method of a magazine base for a stapler according to an embodiment of the present invention;

FIG. 5 is a schematic view of CNC finish machining of a reverse side forming of a magazine base for a stapler according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Referring to fig. 1, the preferred embodiment provides a method for processing a magazine base for a stapler, comprising the following steps:

s10: preparing raw materials, and selecting stainless steel bars with proper sizes.

The bar is formed by cutting a stainless steel bar according to the product forming requirement, and raw material inspection is performed to meet the subsequent processing requirement.

S11: surface treatment, namely washing off greasy dirt on the surface of the bar, and improving the subsequent processing precision.

S20: aging treatment is carried out to eliminate internal stress of the bar.

The bar is put into a high temperature furnace for tempering, the tempering temperature is about 480-550 ℃, and the heat preservation is carried out for 1-2 hours, so that the internal stress of the workpiece is removed, the structure and the size are stabilized, and the mechanical property is improved.

S30: CNC rough machining is conducted, and a base rudiment is formed.

CNC machining refers to computer digital control precision machining, specifically punching positioning holes 1 ' at two ends of a cylindrical bar, a forming process positioning surface 2 ' and a scalpel chute 3 ', as shown in FIG. 2; a feed slot 4' is then formed in the middle, as shown in fig. 3.

S40: CNC finish machining, carrying out accurate milling of the front side and the back side.

CNC front milling to obtain a workpiece shown in FIG. 4; milling the back surface to obtain the workpiece shown in fig. 5, and removing redundant process parts to obtain the workpiece with the target shape.

S41: and (5) deburring.

S42: and (5) checking the size, and ensuring that a proper grinding allowance is reserved on the workpiece.

S50: hardening and tempering, and hardening the workpiece.

Specifically, the workpiece is put into a high-temperature furnace for quenching, the quenching temperature is 950-1050 ℃, the heat preservation is carried out for 2-5 hours, the workpiece is taken out and cooled to below 350 ℃, and then air cooling is carried out; and (3) placing the quenched workpiece into a high-temperature furnace for tempering, wherein the tempering temperature is 650-700 ℃, preserving heat for 2-3 hours, cooling to 200-250 ℃ along with the furnace, and then performing air cooling.

Further, annealing pretreatment is carried out before quenching, the annealing temperature is 740-760 ℃, the annealing time is 2.5-3.5 h, then the annealing is carried out along with furnace cooling to 350-400 ℃, and then the annealing is carried out, and air cooling is carried out for 2-3 h.

S60: the surface is polished and cleaned.

Specifically, gravel sand paper with a proper thickness coefficient is selected to grind the surface of a workpiece, machining flaws are eliminated, and then vibration grinding is performed for surface treatment, wherein the vibration grinding is performed by using stones or steel needles.

S70: and (5) inspecting the finished product and warehousing.

In summary, the processing method of the nail box base for the anastomat prepares the nail box base made of stainless steel, improves the surface forming quality of the nail box base and the performances of finished product hardness, strength, toughness, plasticity and the like through various processes, ensures that the processed nail box base is more stable and durable, has high precision and good nail forming effect, and meets the use requirements of medical industry.

The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above examples, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The processing method of the nail box base for the anastomat is characterized by comprising the following steps of:

step S20: aging treatment, namely eliminating internal stress of the bar;

step S30: CNC rough machining is performed to form a base embryonic form, positioning holes are punched at two ends of a bar, and a process positioning surface, a scalpel chute and a feed slot are formed;

step S50: quenching and tempering, hardening the workpiece, putting the workpiece into a high-temperature furnace for quenching, wherein the quenching temperature is 950-1050 ℃, preserving heat for 2-5 hours, taking out, cooling to below 350 ℃, and then performing air cooling; placing the quenched workpiece into a high-temperature furnace for tempering, wherein the tempering temperature is 650-700 ℃, preserving heat for 2-3 hours, cooling to 200-250 ℃ along with the furnace, and then performing air cooling;

step S60: surface grinding, cleaning, namely grinding the surface of a workpiece by selecting gravel sand paper with a proper thickness coefficient, eliminating machining flaws, and performing vibration grinding for surface treatment;

step S70: and (5) inspecting the finished product and warehousing.

2. The method according to claim 1, wherein in step S20, the rod is tempered in a high temperature furnace at 480 to 550 ℃ for 1 to 2 hours.

3. The method of claim 1, wherein the vibratory finishing is a vibratory finishing with a stone or steel needle.

4. The method according to claim 1, wherein the annealing pretreatment is performed before quenching, the annealing temperature is 740-760 ℃, the annealing time is 2.5-3.5 h, and then the annealing is performed after cooling to 350-400 ℃ along with the furnace, and then the annealing is performed for 2-3 h.

5. The method of claim 1, wherein in step S10, the bar is cut from a stainless steel bar and the raw material is inspected.

6. The method of claim 1, further comprising the step of S11 before step S20: surface treatment, namely washing off greasy dirt on the surface of the bar.

7. The method of claim 1, further comprising the step S41 after the step S40: and (5) deburring.

8. The method of claim 1, further comprising the step S42 of: and (5) checking the size, and ensuring that a proper grinding allowance is reserved on the workpiece.