Anastomat with misassembly prevention

Abstract

The application discloses an anastomat with mistaken assembly prevention function, which comprises a detachably connected nail magazine assembly and a body, the nail magazine assembly comprises a nail magazine inner core pipe, the body is provided with an empty slot for the insertion of the nail magazine inner core pipe, a cutting knife is slidably arranged in the nail magazine inner core pipe, a guide-in sliding block is slidably arranged on the surface of the nail magazine inner core pipe close to the body, a plurality of guide-in extension blocks are arranged on the side of the guide-in sliding block close to the body, the guide-in sliding block is provided with an accommodating slot for accommodating a limiting sliding block, a limiting sliding groove is formed through the nail magazine inner core pipe, the position of the cutting knife corresponds to the middle position of the limiting sliding groove, a limiting bottom sliding block is arranged at the bottom of the limiting sliding block and is slidably connected with the limiting sliding groove, and the limiting bottom sliding block extends into the nail magazine inner core pipe through the limiting sliding groove and corresponds to the cutting knife; a plurality of guide slots are uniformly formed on the end of the body close to the nail magazine inner core pipe. The anastomat can quickly distinguish whether the nail magazine has been fired.

Description

Technical Field

[0001] This invention relates to staplers, and more particularly to a stapler with a function to prevent misassembly. Background Technology

[0002] Anastomosing devices are medical alternatives to manual suturing. Their main working principle involves using titanium staples to separate or anastomose tissue, similar to a stapler. Compared to traditional manual suturing, the advantages of using an anastomosing device are: 1. Simpler and more convenient operation, saving surgical time; 2. Tight and appropriately loose sutures using titanium or stainless steel staples (skin staplers); 3. Smaller wounds, resulting in fewer side effects for the patient and a greater chance of avoiding complications.

[0003] The stapler consists of two parts: the staple cartridge and the staple body. The staple body is used by medical staff for operation, and the staple cartridge is used to provide titanium or stainless steel staples. In order to reduce the cost of use, a split stapler has now emerged, in which the staple body and the staple cartridge are detachably connected. During surgery, medical staff select the corresponding size of staple cartridge as needed and then connect it to the staple body. This greatly reduces the cost of using the stapler and helps patients reduce medical expenses.

[0004] However, this design also has the following problems: During the operation, medical staff may use multiple nail cartridges. During the operation, medical staff may not be able to quickly distinguish between nail cartridges that have been fired and those that have not been fired. They may only find out after the assembly and use that the cutting blade in the currently assembled nail cartridge has been fired. This not only brings the risk of unsanitary operation and failure, but may also delay the operation time and bring considerable surgical risks to the patient. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a stapler that can help medical staff quickly distinguish whether the staple cartridge to be assembled has been fired and prevent medical staff from assembling it incorrectly.

[0006] Technical Solution: The present invention provides a stapler with anti-misassembly function, comprising a detachably connected staple cartridge assembly and a device body. The staple cartridge assembly includes a cylindrical staple cartridge inner core tube for insertion into the device body. The device body has a slot for insertion of the staple cartridge inner core tube. A cutting blade is slidably disposed inside the staple cartridge inner core tube. An inlet slider is slidably disposed on the surface of the staple cartridge inner core tube near the device body. Several inlet extension blocks are disposed on the side of the inlet slider near the device body. The inlet slider has a receiving groove for accommodating a limiting slider. A limiting groove is formed through the staple cartridge inner core tube. The position of the cutting blade corresponds to the middle position of the limiting groove. A limiting bottom slider is disposed at the bottom of the limiting slider. The limiting bottom slider is slidably connected to the limiting groove and extends into the staple cartridge inner core tube through the limiting groove to correspond to the cutting blade. Several guide grooves are formed at one end of the device body near the staple cartridge inner core tube.

[0007] Furthermore, a closed spring receiving cavity is provided between the inner core tube of the nail box and the bottom surface of the limiting slider. A spring is provided in the spring receiving cavity, one end of the spring is limited by the inner core tube of the nail box, and the other end of the spring is limited by the limiting slider.

[0008] Furthermore, an inlet bottom slider is provided at the bottom of the inlet slider, and an inlet groove is formed in the inner core tube of the nail box for sliding connection with the inlet bottom slider.

[0009] Furthermore, the tail end of the core tube inside the nail box is provided with several guide blocks corresponding to the position of the guide groove, and the guide blocks are equal to the width of the guide groove.

[0010] Furthermore, the width of the guide block is greater than or equal to the width of the extension block.

[0011] Furthermore, a positioning bottom protrusion is provided at the bottom of the import extension block, and several grooves are provided on the inner core tube of the nail box for positioning in conjunction with the positioning bottom protrusion.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The cutting blade is also used to limit the limiting slider. When the cutting blade is fired, the limiting slider enters the other side of the cutting blade under the action of the spring, thereby pushing the guide slider. When there is no external force, the position of the guide extension block and the guide block is inconsistent, which can be quickly distinguished by medical staff. The inconsistency between the position of the guide extension block and the guide block is actually due to the angle difference between the guide extension block and the guide groove of the device body. If the staple cartridge assembly is directly inserted into the device body in this state, the guide extension block will abut against the device body and interfere. The staple cartridge assembly cannot be directly installed into the device body, which prevents medical staff from mistakenly assembling the staple cartridge assembly. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention.

[0014] Figure 2 This is a schematic diagram of some components of the nail box in this invention.

[0015] Figure 3 This is an exploded view of some components of the nail box in this invention.

[0016] Figure 4 This is a schematic diagram of the core tube inside the nail box in this invention.

[0017] Figure 5 This is a schematic diagram of the core tube inside the nail box and the cutting blade combined in this invention.

[0018] Figure 6 for Figure 5 Enlarged view at point A.

[0019] Figure 7 This is a schematic diagram of the slider introduced in this invention.

[0020] Figure 8 This is a schematic diagram of the limiting slider in this invention.

[0021] Figure 9 This is a diagram showing the state of the nail box when it is not in use.

[0022] Figure 10 This is a diagram showing the state of the nail box behind the loader.

[0023] Figure 11 This is a diagram showing the state of the nail cartridge after the cutting blade is fired.

[0024] Figure 12 This is a diagram showing the state of the nail box when it is separated from the body of the device.

[0025] Figure 13 This is a diagram showing the state of the nail box after it has been disassembled.

[0026] Figure 14 This is a schematic diagram of the device body in this invention.

[0027] The components are as follows: 1. Body; 101. Guide groove; 2. Nail box assembly; 201. Limiting slider; 2011. Limiting bottom slider; 2012. Limiting spring groove; 202. Spring; 203. Inlet slider; 2031. Inlet extension block; 2032. Receiving groove; 2033. Inleting bottom slider; 2034. Positioning bottom protrusion; 204. Nail box inner core tube; 2041. Guide block; 2042. Groove; 2043. Nail box inner core upper tube; 2044. Nail box inner core lower tube; 2045. Inlet slide groove; 2046. Limiting slide groove; 2047. Nail box spring groove; 205. Cutting blade. Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0029] See appendix Figures 1 to 14 The present invention discloses a stapler with anti-misassembly function, comprising a detachably connected staple box assembly 2 and a device body 1.

[0030] The device body 1 has a slot for inserting the core tube 204 of the nail box, and several guide slots 101 are provided at one end of the device body 1 near the core tube 204 of the nail box.

[0031] The nail cartridge assembly 2 includes a cylindrical inner core tube 204 for insertion into the body 1. The inner core tube 204 includes an upper inner core tube 2043 and a lower inner core tube 2044. A cutting blade 205 is slidably disposed inside the inner core tube 204. An inlet slider 203 is slidably disposed on the surface of the inner core tube 204 near the body 1. An inlet groove 2045 is formed in the inner core tube 204. An inlet bottom slider 2033 is disposed at the bottom of the inlet slider 203. The guide slider 203 is slidably connected to the bottom guide slider 2033. The guide slider 203 has a receiving groove 2032 for accommodating the limiting slider 201. A limiting groove 2046 is formed through the core tube 204 of the nail cartridge. The position of the cutting blade 205 corresponds to the middle position of the limiting groove 2046. A limiting bottom slider 2011 is provided at the bottom of the limiting slider 201. The limiting bottom slider 2011 is slidably connected to the limiting groove 2046. The limiting bottom slider 2011 extends into the core tube 204 of the nail cartridge through the limiting groove 2046. 04 corresponds to the cutting blade 205; several guide extension blocks 2031 are provided on the side of the guide slider 203 near the body 1; a nail box spring groove 2047 is opened on the outer surface of the nail box inner core tube 204, and a limiting spring groove 2012 is opened on the bottom surface of the limiting slider 201. The nail box spring groove 2047 and the limiting spring groove 2012 form a closed spring receiving cavity. A spring 202 is installed in the spring receiving cavity. One end of the spring 202 is limited by the end face of the nail box spring groove 2047, and the other end of the spring 202... The end is limited by the end face of the limiting spring groove 2012; the tail end of the nail box inner core tube 204 is provided with several guide blocks 2041 corresponding to the position of the guide groove 101, the guide block 2041 is equal to the width of the guide groove 101, and the width of the guide block 2041 is greater than or equal to the width of the guide extension block 2031; the bottom of the guide extension block 2031 is provided with a positioning bottom protrusion 2034, and several grooves 2042 are provided on the nail box inner core tube 204 for positioning in conjunction with the positioning bottom protrusion 2034.

[0032] like Figure 9 As shown, when the nail box assembly 2 is not inserted into the body 1, without the action of external force, the position of the guide block 2031 corresponds to the position of the guide block 2041, the bottom slider 2011 of the limiting slider 201 is located to the left of the cutting blade 205, the bottom slider 2011 is actually limited by the cutting blade 205, and the spring 202 is compressed in the spring receiving cavity.

[0033] like Figure 10 As shown, when the nail box assembly 2 is installed into the body 1, the push block (not shown) in the body 1 pushes the guide extension block 2031, causing the guide slider 203 to rotate to the position shown in the figure. At this time, the limiting bottom slider 2011 of the limiting slider 201 is still located to the left of the cutting blade 205. The limiting bottom slider 2011 is actually limited by the cutting blade 205, and the spring 202 is compressed in the spring receiving cavity.

[0034] like Figure 11 As shown, after the cutting blade 205 is fired, it pops out in the direction of the arrow. Therefore, the limiting bottom slider 2011 is no longer limited by the cutting blade 205. Under the action of the spring 202, the limiting slider 201 rotates to the position shown in the figure. At this time, the limiting bottom slider 2011 of the limiting slider 201 is located to the right of the cutting blade 205.

[0035] like Figure 12 As shown, when it is necessary to separate the nail cartridge assembly 2 from the device body 1, the cutting blade 205 is first retracted after use. Then, the medical staff manually rotates the guide slider 203 to drive the limiting slider 201 to rotate back until the position of the guide extension block 2031 corresponds to the position of the guide block 2041. The nail cartridge assembly 2 then smoothly exits the device body 1. At this time, the limiting bottom slider 2011 of the limiting slider 201 is located to the right of the cutting blade 205, and the spring 202 is compressed.

[0036] like Figure 13 As shown, after the nail cartridge assembly 2 is completely disassembled, under the action of the spring 202, the limiting slider 201 pushes the guide slider 203 to the position shown in the figure. At this time, without the action of external force, the position of the guide extension block 2031 does not correspond to the position of the guide block 2041, and medical staff can quickly distinguish them. Moreover, if the nail cartridge assembly 2 in this state is directly inserted into the device body 1, the guide extension block 2031 will abut against the device body 1 and interfere. The nail cartridge assembly 2 cannot be directly installed into the device body 1, which prevents medical staff from mistakenly assembling the nail cartridge assembly 2.

Claims

1. A stapler with anti-misassembly function, characterized in that: The device includes a detachably connected nail box assembly (2) and a body (1). The nail box assembly (2) includes a cylindrical nail box inner core tube (204) for insertion into the body (1). The body (1) has a slot for insertion of the nail box inner core tube (204). A cutting blade (205) is slidably disposed inside the nail box inner core tube (204). An inlet slider (203) is slidably disposed on the surface of the nail box inner core tube (204) near the body (1). Several inlet extension blocks (2031) are disposed on the side of the inlet slider (203) near the body (1). The inlet slider (203) has a receiving groove (2032) for accommodating a limiting slider (201). A limiting groove (2046) is formed through the nail box inner core tube (204). The position of the cutting blade (205) corresponds to the middle position of the limiting groove (2046). A limiting groove is provided at the bottom of the limiting slider (201). The bottom slider (2011) is slidably connected to the limiting slide groove (2046). The bottom slider (2011) extends into the nail box inner core tube (204) through the limiting slide groove (2046) and corresponds to the cutting blade (205). Several guide grooves (101) are opened at one end of the body (1) near the nail box inner core tube (204). Several guide grooves (101) are provided at the tail end of the nail box inner core tube (204) and correspond to the guide grooves (101). 1) A guide block (2041) corresponding to the position, the guide block (2041) being equal to the width of the guide groove (101); a closed spring receiving cavity is provided between the bottom surface of the nail box inner core tube (204) and the limiting slider (201), a spring (202) is provided in the spring receiving cavity, one end of the spring (202) is limited by the nail box inner core tube (204), and the other end of the spring (202) is limited by the limiting slider (201).

2. The stapler with anti-misassembly function according to claim 1, characterized in that: The bottom of the inlet slider (203) is provided with an inlet bottom slider (2033), and the nail box inner core tube (204) is provided with an inlet groove (2045) for sliding connection with the inlet bottom slider (2033).

3. The stapler with anti-misassembly function according to claim 1, characterized in that: The width of the guide block (2041) is greater than or equal to the width of the extension block (2031).

4. A stapler with anti-misassembly function according to claim 1, characterized in that: The bottom of the import extension block (2031) is provided with a positioning bottom protrusion (2034), and the nail box inner core tube (204) is provided with a plurality of grooves (2042) for positioning in conjunction with the positioning bottom protrusion (2034).

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