Nail box base for anastomat, machining method of nail box base and anastomat nail box assembly

Abstract

The invention provides a nail box base for an anastomat, a machining method of the nail box base and an anastomat nail box assembly. The nail box base comprises a first base part, a second base part, a sliding groove formed between the first base part and the second base part and a connecting part arranged on the outer side of the nail box base and used for connecting the first base part and the second base part. The first base part, the second base part and the connecting part are integrally formed, the front ends of the first base part and the second base part are connected with each other, the middle parts of the first base part and the second base part are separated from each other, the rear ends of the first base part and the second base part are opened and separated from each other, and the sliding groove is at least partially covered by the connecting part. Compared with the prior art, on one hand, according to the nail box base, the sliding groove can be covered through the connecting part, and a closed structure is formed; on the other hand, the structural strength of the nail box base can be improved through the connecting part, and the titanium nail forming rate and the titanium nail forming effect are improved.

Description

Technical Field

[0001] The invention relates to a stapler stapler base and a processing method thereof, and a stapler stapler assembly, belonging to the stapler technical field. Background Art

[0002] The stapler is designed and used based on the principle of stapler. It is a surgical instrument that replaces traditional manual cutting and suturing in surgical operations. Its corresponding core component is the cutting assembly, which consists of a stapler base, staples, anvils, cutting knives, pusher sleeves, component protection covers, transmission rods, etc. The core parts are the anvils and stapler base. Among them, the structure and quality of the anvils and stapler base will directly affect the staple formation effect of the stapler.

[0003] Due to structural reasons, the base of the stapler magazine currently on the market is open at the tail, which can easily cause overall deformation. Moreover, the accuracy deviation after deformation is large, resulting in poor staple forming and affecting the ultimate use effect of the stapler. Summary of the invention

[0004] The object of the present invention is to provide a stapler stapler base, which not only has improved structural strength but also has a better staple forming effect.

[0005] To achieve the above-mentioned purpose, the present invention provides a stapler nail magazine base, the nail magazine base comprising a first base, a second base, a slide groove formed between the first base and the second base, and a connecting portion connecting the first base and the second base on the outer side of the nail magazine base, the first base, the second base and the connecting portion are integrally formed, and the front ends of the first base and the second base are connected to each other, the middle parts are separated from each other, and the rear ends are separated from each other in an open shape, and the slide groove is at least partially covered by the connecting portion.

[0006] As a further improvement of the present invention, the connecting portion is in an arch bridge shape spanning between the first base portion and the second base portion to form a cavity between the connecting portion and the slide groove, and the cavity is connected to the slide groove.

[0007] As a further improvement of the present invention, the extending direction of the slide slot is the same as the extending direction of the nail magazine base, and the first base and the second base are arranged symmetrically with respect to the slide slot.

[0008] As a further improvement of the present invention, one end of the slide groove extends to pass through the nail magazine base, so that the slide groove is arranged in a straight line.

[0009] As a further improvement of the present invention, the connecting portion completely covers the sliding groove.

[0010] As a further improvement of the present invention, the connecting portion partially covers the sliding groove.

[0011] As a further improvement of the present invention, the connecting parts are provided in plurality and are arranged at intervals from each other so as to cover the sliding groove in an interval manner.

[0012] The object of the present invention is to provide a method for processing a stapler stapler base, so that the processed stapler base has better structural strength and better staple forming effect.

[0013] To achieve the above object, the present invention provides a method for processing a stapler stapler base, which is used to process the stapler stapler base, and comprises the following steps:

[0014] Step S10: preparing raw materials and selecting stainless steel bars of appropriate sizes;

[0015] Step S20, ultrasonically cleaning and contour cutting the rod to form a workpiece;

[0016] Step S30, CNC1 processing, roughing and finishing the front of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um;

[0017] Step S40, CNC2 processing, roughing and finishing the back surface of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um;

[0018] Step S50, T-knife processing, first customize the tool according to the position and length of the workpiece to be processed, and then use the plane milling method to process the slide groove, so that the nail box base is divided into three parts: the first base, the second base and the connecting part;

[0019] Step S60, surface grinding and cleaning, selecting sandpaper with appropriate coarseness coefficient to grind the workpiece surface first to eliminate machining scratches, then vibration grinding for surface treatment, and finally ultrasonic cleaning;

[0020] Step S70, hardening the workpiece, placing the workpiece in a high temperature furnace for quenching, heat preservation, and air cooling, and then placing the quenched workpiece in a high temperature furnace for tempering, heat preservation, furnace cooling, and then air cooling;

[0021] Step S80: Finished product inspection and storage.

[0022] As a further improvement of the present invention, in the steps S30 and S40, before rough and fine machining of the front and back surfaces of the workpiece, it is necessary to perform computer programming and select a tool according to the structure of the workpiece, machining accuracy and tolerance.

[0023] As a further improvement of the present invention, before step S50, step S41 is also included: finishing the side opening of the workpiece so that the size accuracy and position accuracy of the hole meet predetermined requirements.

[0024] As a further improvement of the present invention, in step S50, the step of processing the slide groove by plane milling is: selecting the inner boundary line of the root of the workpiece as the boundary and the bottom surface of the workpiece as the bottom surface, and processing by contour processing and constant step distance. During processing, the tool gradually feeds slightly inward so that the position of the slide groove formed by the processing is accurate. After the processing is completed, the tool is withdrawn from the area to be processed.

[0025] As a further improvement of the present invention, after step S50, step S51 is further included: chamfering and deburring, and then performing process inspection on the workpiece.

[0026] The object of the present invention is to provide a stapler stapler assembly, which not only has improved structural strength but also has better staple forming effect.

[0027] To achieve the above-mentioned purpose, the present invention provides a stapler nail magazine assembly, including a nail magazine front end assembly and a nail magazine rear end assembly connected by a bending actuator, the nail magazine front end assembly including a nail anvil, a cover body connected to the nail anvil, a nail magazine, and a nail magazine base connected to the nail magazine, the nail magazine base is the aforementioned nail magazine base, the connecting portion connects the first base and the second base on the side of the nail magazine base away from the nail anvil, and the first base and the second base are respectively rotatably installed at the front end of the nail magazine rear end assembly via a rotating shaft.

[0028] The beneficial effects of the present invention are as follows: the nail magazine base of the present invention is provided with a connecting portion connecting the first base and the second base on the outer side of the nail magazine base, and the first base, the second base and the connecting portion are provided as an integral part, so that on the one hand, the connecting portion can be used to cover the slide groove to form a closed structure, thereby preventing the cutting knife from deviating from the predetermined trajectory and making the cutting knife move more accurately; on the other hand, the addition of the connecting portion makes it less likely for the tail opening of the nail magazine base to be deformed, thereby improving the overall structural strength of the nail magazine base and improving the titanium nail forming rate and forming effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional view of the stapler magazine assembly of the present invention.

[0030] Figure 2 yes Figure 1An exploded view of the stapler magazine assembly is shown.

[0031] Figure 3 yes Figure 2 A three-dimensional view of a first embodiment of a middle nail magazine base.

[0032] Figure 4 yes Figure 3 Another perspective view of the nail magazine base shown.

[0033] Figure 5 yes Figure 3 A perspective view of a second embodiment of a magazine base is shown.

[0034] Figure 6 yes Figure 3 A three-dimensional view of a third embodiment of a nail magazine base is shown.

[0035] Figure 7 The present invention is a flowchart of a method for processing a stapler cartridge base. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1 and Figure 2 As shown, the present invention discloses a stapler stapler assembly, including a stapler front assembly 100 and a stapler rear assembly 300 connected by a bending actuator 200, wherein the stapler front assembly 100 includes an anvil 12, a cover 13 connected to the anvil 12, a stapler 11, and a stapler base 10 connected to the stapler 11. The stapler 11 is provided with a first row of knife grooves 111 and at least one row of staple holes 112, and a cutting knife (not shown) can move in the first row of knife grooves 111 under the push of a pushing device, and the staple holes 112 are all located on one side of the first row of knife grooves 111.

[0038] Specifically, during the operation, the stapler assembly is installed on the stapler body, and then the stapler assembly is inserted into the anal dilator cavity to clamp the tissue with the stapler seat 12 and the stapler magazine 11, and then the stapler is fired, and the cutting knife passes through the first row of knife grooves 111 to cut the tissue. After the cutting knife passes, only the side close to the intestinal wall that needs to be sutured is sutured, and the tissue that does not need to be sutured is cut off. The stapler is taken out and the tissue that has been cut and dropped into the anal dilator cavity is clamped out with clamps or tweezers, thereby completing the operation.

[0039] The anvil 12 is provided with a second row of knife grooves 121, which are substantially in the same position as the first row of knife grooves 111, and the anvil 12 is also provided with staple grooves 122 which are in one-to-one correspondence with the staple holes 112 and are convenient for staple forming. When the cutting knife passes through, it passes through the first row of knife grooves 111 and the corresponding second row of knife grooves 121 at the same time, thereby completing the cutting of the tissue clamped between the anvil 12 and the staple cartridge 11 and the anastomosis of the wound on the intestinal wall.

[0040] like Figure 3 and Figure 4 Combined with Figure 2 As shown, the nail magazine base 10 includes a first base 101, a second base 102, a slide groove 103 formed between the first base 101 and the second base 102, and a connecting portion 104 connecting the first base 101 and the second base 102 on a side of the nail magazine base 10 away from the nail support 12. The first base 101, the second base 102 and the connecting portion 104 are integrally formed, and the slide groove 103 is at least partially covered by the connecting portion 104 to form a closed structure.

[0041] The first base 101 and the second base 102 are rotatably mounted on the front end of the nail magazine rear end assembly 300 via the rotating shaft 14, so that the nail magazine base 10 can be opened and closed in a V shape relative to the nail support 12, thereby facilitating the operation.

[0042] The positions of the slide groove 103 and the first row of knife grooves 111 roughly correspond, and the connecting portion 104 spans between the first base 101 and the second base 102 in the shape of an arch bridge to form a cavity 105 between the connecting portion 104 and the slide groove 103, and the cavity 105 is connected to the slide groove 103, so that when the cutting knife passes, it can pass through the first row of knife grooves 111 and extend into the slide groove 103, so as to complete the cutting of the tissue clamped between the nail seat 12 and the nail magazine 11 and the anastomosis of the wound on the intestinal wall.

[0043] That is to say, the slide groove 103 can play a role in positioning the cutting knife. At the same time, when the cutting knife is moving, since the connecting part 104 connects the first base 101 and the second base 102, the first base 101 and the second base 102 can play a role in limiting the left and right positions of the cutting knife, and the connecting part 104 plays a role in limiting the upper and lower positions of the cutting knife, so that the moving trajectory of the cutting knife is more precise.

[0044] In this embodiment, the extending direction of the slide groove 103 is the same as the extending direction of the nail magazine base 10, and the first base 101 and the second base 102 are arranged symmetrically with respect to the slide groove 103. The end of the slide groove 103 close to the nail magazine rear end assembly 300 extends to pass through the nail magazine base 10, so that the slide groove 103 is arranged in a straight line, and the first base 101 and the second base 102 can be separated from each other. In other words, the front ends of the first base 101 and the second base 102 are connected to each other, the middle parts are separated from each other, and the rear ends are separated from each other in an open shape.

[0045] The connecting portion 104 is respectively connected to the two sides of the first base 101 and the second base 102 that are away from each other, so as to smoothly and completely cover the first base 101, the slide 103 and the second base 102, so that the structural strength of the nail magazine base 10 is better, the appearance is more beautiful, and the titanium nail forming rate and forming effect are improved. In this embodiment, the connecting portion 104 partially covers the slide 103, that is, the slide 103 is partially exposed to the external environment. Of course, in other embodiments, the connecting portion 104 can also cover the entire slide 103, which is not limited here.

[0046] like Figure 5 FIG. 1 is a second embodiment of the nail magazine base 10. In this embodiment, the connecting parts 104 are provided in plurality and are arranged at intervals, so that the connecting parts 104 cover the chute 103 in an interval manner. This arrangement not only reduces the production cost, but also the spaced connecting parts 104 provide space for iron filings generated during the processing to fall.

[0047] like Figure 6 FIG. 1 is a third embodiment of the nail magazine base 10. In this embodiment, the connecting portion 104 extends from one end of the first base 101 and the second base 102 to the other end to completely cover the chute 103. However, in order to leave space for iron filings to fall during the processing, a drop hole 106 is provided on the connecting portion 104, and the drop hole 106 is connected to the chute 103, so that iron filings can fall from the drop hole 106 and the chute 103.

[0048] In the present invention, the nail magazine base 10 is made of stainless steel, so that the rigidity is increased by 2-3 times. In order to test the nailing effect of the nail magazine base 10 of the present invention, the closed nail magazine base 10 of the present invention is compared with the existing open nail magazine base without a connecting portion, as shown in the table below.

[0049]

[0050] It can be seen from the above table that: after comparing the number and proportion of nails formed after in vitro experimental tests of the current open nail magazine base and the closed nail magazine base, it is found that the nail forming effect of the closed nail magazine base is significantly better than that of the open nail magazine base.

[0051] like Figure 7 As shown, the present invention also provides a processing method for processing the nail magazine base 10, which mainly includes the following steps:

[0052] Step S10: preparing raw materials and selecting stainless steel bars of appropriate sizes;

[0053] Step S20, raw material processing, ultrasonic cleaning and contour cutting of the rod to form a workpiece;

[0054] Step S30, CNC1 processing, roughing and finishing the front of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um;

[0055] Step S40, CNC2 processing, roughing and finishing the back surface of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um;

[0056] Step S50, T-knife processing, first customize the tool according to the position and length of the workpiece to be processed, and then use the plane milling method to process the slide groove 103, so that the nail box base 10 is divided into three parts: the first base part 101, the second base part 102 and the connecting part 104;

[0057] Step S60, surface grinding and cleaning, selecting sandpaper with appropriate coarseness coefficient to grind the workpiece surface first to eliminate machining scratches, then vibration grinding for surface treatment, and finally ultrasonic cleaning;

[0058] Step S70, hardening the workpiece, placing the workpiece in a high temperature furnace for quenching, heat preservation, and air cooling, and then placing the quenched workpiece in a high temperature furnace for tempering, heat preservation, furnace cooling, and then air cooling;

[0059] Step S80: Finished product inspection and storage.

[0060] The rods in step S10 are cut from stainless steel rods according to product forming requirements, and the raw material inspection is performed, including inspection of shape and size, to meet subsequent processing requirements.

[0061] The CNC machining in steps S30 and S40 refers to computer digital controlled precision machining.

[0062] In step S30, before rough and fine machining the front side of the workpiece, it is necessary to first perform a process analysis on the front side of the workpiece, then perform computer programming and tool selection according to the structure of the workpiece, machining accuracy and tolerance, and finally clamp and rough and fine machine the workpiece. After machining is completed, the clamped workpiece needs to be removed so that the reverse side of the workpiece can be clamped and processed again.

[0063] In step S40, before roughing and finishing the back side of the workpiece, it is necessary to perform computer programming and tool selection according to the structure of the workpiece, machining accuracy and tolerance, and finally roughing and finishing the back side of the workpiece.

[0064] Before step S50, the method further includes the following steps:

[0065] S41: Finish the side opening of the workpiece to ensure that the size accuracy and position accuracy of the hole meet the predetermined requirements;

[0066] S42: Perform process inspection on the workpieces that have undergone rough and fine processing to ensure that the current semi-finished workpieces meet the requirements.

[0067] The setting of step S42 can screen out unqualified semi-finished products as early as possible, saving the processing cost of subsequent processes.

[0068] Step S50 is specifically as follows: T-cut processing, firstly, according to the position and length of the workpiece to be processed, a corresponding computer program is compiled, a special tool is customized, and then the slide groove 103 is processed by the "plane milling" method, so that the nail magazine base 10 is divided into three parts: the first base 101, the second base 102 and the connecting part 104; wherein, the steps of processing the slide groove 103 by the "plane milling" method are as follows: the inner boundary line of the root of the workpiece is selected as the boundary, the bottom surface of the workpiece is selected as the bottom surface, and the contour processing method and constant step distance are used for processing. During processing, the tool gradually feeds slightly inward, so that the position of the slide groove 103 formed by the processing is accurate, and the precision and smoothness are very good. After the processing is completed, the tool is withdrawn from the area to be processed.

[0069] After step S50, the method further includes step S51: chamfering and deburring, and then performing a process inspection on the workpiece again.

[0070] After step S60 and after step S70, the finished product size inspection can be performed on the workpiece to screen out defective products.

[0071] Step S70 is specifically as follows: placing the workpiece in a high-temperature furnace for quenching at a quenching temperature of 950-1050°C, keeping it warm for 2-5 hours, taking it out and cooling it to below 350°C, and then air-cooling it; placing the quenched workpiece in a high-temperature furnace for tempering at a tempering temperature of 650-700°C, keeping it warm for 2-3 hours, cooling it with the furnace to 200-250°C, and then air-cooling it.

[0072] Furthermore, annealing pretreatment is performed before quenching, the annealing temperature is 740-760° C., the annealing time is 2.5-3.5 hours, and then the steel is taken out after cooling to 350-400° C. in the furnace and air-cooled for 2-3 hours.

[0073] In summary, the present invention sets a connecting portion 104 connecting the first base 101 and the second base 102 on the outer side of the nail magazine base 10, and sets the first base 101, the second base 102 and the connecting portion 104 to be integrally formed, so that on the one hand, the connecting portion 104 can be used to cover the slide groove 103 to form a closed structure to prevent the cutting knife from deviating from the predetermined trajectory (for example, the cutting knife jumps out upward), so that the cutting knife moves more accurately; on the other hand, the addition of the connecting portion 104 makes it difficult for the tail opening of the nail magazine base 10 to deform, thereby improving the overall structural strength of the nail magazine base 10 and improving the titanium nail forming rate and forming effect.

[0074] 104 is used to improve the structural strength of the nail magazine base 10, and improve the titanium nail forming rate and forming effect.

[0075] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A stapler magazine base, characterized in that: The nail magazine base includes a first base, a second base, a slide groove formed between the first base and the second base, and a connecting portion connecting the first base and the second base on the outer side of the nail magazine base. The first base, the second base and the connecting portion are integrally formed, and the front ends of the first base and the second base are connected to each other, the middle parts are separated from each other, and the rear ends are separated from each other in an open shape, and the slide groove is at least partially covered by the connecting portion.

2. The stapler magazine base according to claim 1, characterized in that: The connecting portion is in an arch bridge shape and spans between the first base portion and the second base portion to form a cavity between the connecting portion and the slide groove, and the cavity is communicated with the slide groove.

3. The stapler magazine base according to claim 1, characterized in that: The extending direction of the slide slot is the same as the extending direction of the nail magazine base, and the first base portion and the second base portion are disposed symmetrically with respect to the slide slot.

4. The stapler magazine base according to claim 3, characterized in that: One end of the slide groove extends to pass through the nail magazine base, so that the slide groove is arranged in a straight line.

5. The stapler magazine base according to claim 1, characterized in that: The connecting portion completely covers the slide groove.

6. The stapler magazine base according to claim 1, characterized in that: The connecting portion partially covers the slide groove.

7. The stapler magazine base according to claim 6, characterized in that: The connecting parts are provided in plurality and are arranged at intervals from each other so as to cover the slide groove in an interval manner.

8. A method for processing a stapler magazine base, used for processing the stapler magazine base according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S10: preparing raw materials and selecting stainless steel bars of appropriate sizes; Step S20, ultrasonically cleaning and contour cutting the rod to form a workpiece; Step S30, CNC1 processing, roughing and finishing the front of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um; Step S40, CNC2 processing, roughing and finishing the back surface of the workpiece, so that the plane dimensional accuracy after roughing reaches IT11-13 level, the surface roughness reaches 6.3um-25um, and the plane dimensional accuracy after finishing reaches IT8-IT10 level, and the surface roughness reaches 1.6um-6.3um; Step S50, T-knife processing, first customize the tool according to the position and length of the workpiece to be processed, and then use the plane milling method to process the slide groove, so that the nail box base is divided into three parts: the first base, the second base and the connecting part; Step S60, surface grinding and cleaning, selecting sandpaper with appropriate coarseness coefficient to grind the workpiece surface first to eliminate machining scratches, then vibration grinding for surface treatment, and finally ultrasonic cleaning; Step S70, hardening the workpiece, placing the workpiece in a high temperature furnace for quenching, heat preservation, and air cooling, and then placing the quenched workpiece in a high temperature furnace for tempering, heat preservation, furnace cooling, and then air cooling; Step S80: Finished product inspection and storage.

9. The processing method according to claim 8, characterized in that: In the steps S30 and S40, before rough and fine machining the front and back surfaces of the workpiece, it is necessary to perform computer programming and select a tool according to the structure of the workpiece, machining accuracy and tolerance.

10. The processing method according to claim 8, characterized in that: Before the step S50, the method further includes step S41: finishing the side opening of the workpiece so that the size accuracy and position accuracy of the hole meet the predetermined requirements.

11. The processing method according to claim 8, characterized in that: In step S50, the steps of machining the slide groove by plane milling are as follows: selecting the inner boundary line of the root of the workpiece as the boundary and the bottom surface of the workpiece as the bottom surface, and machining by contour machining and constant step length. During machining, the tool gradually feeds slightly inward so that the position of the slide groove formed by machining is accurate. After machining is completed, the tool is withdrawn from the area to be machined.

12. The processing method according to claim 8, characterized in that: After step S50, step S51 is further included: chamfering and deburring, and then performing process inspection on the workpiece.

13. A stapler magazine assembly, comprising a magazine front assembly and a magazine rear assembly connected via a bending actuator, the magazine front assembly comprising an anvil, a cover connected to the anvil, a staple cartridge, and a staple cartridge base connected to the staple cartridge, characterized in that: The nail magazine base is the nail magazine base described in any one of claims 1-7, the connecting portion connects the first base and the second base on the side of the nail magazine base away from the nail support, and the first base and the second base are respectively rotatably mounted on the front end of the rear end assembly of the nail magazine via a rotating shaft.

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