Nail bin with built-in cutting head and anastomat

Abstract

The utility model discloses a nail bin with a built-in cutting tool bit and an anastomat, and relates to the technical field of anastomators and anastomats, the nail bin comprises a nail box, a nail pusher, a bracket, a blade and a push rod, a plurality of suturing nails are arranged in the nail box, and the lower side of the nail box is provided with a sliding groove extending front and back; the nail pusher is installed in the sliding groove in a sliding mode, and when the nail pusher moves forwards, the suturing nails can be pushed to leave the nail box; the bracket is detachably connected to the nail box, and the bracket abuts against the nail pushing device to prevent the nail pushing device from being separated from the sliding groove; the blade is slidably mounted on the nail pusher, a cutting edge is arranged at the upper end of the blade, and the blade has a first state in which the cutting edge is completely located in the sliding groove and a second state in which the cutting edge extends out of the sliding groove; and the push rod is used for driving the nail pusher to move forwards and driving the blade to switch between the first state and the second state. According to the utility model, the blade can be replaced while the nail bin is replaced, so that the use safety of surgical operating instruments is improved, and the medical risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of staplers, in particular to a stapler with a built-in cutting head. Background Art

[0002] A stapler is a handheld surgical instrument for cutting and suturing tissue. Its main working principle is to use titanium staples to sever and anastomose / connect / suture tissue, which can reduce or eliminate bleeding from soft tissue during the tissue cutting process. The stapler includes a handle assembly, a transmission assembly, and an end effector. The end effector includes a staple cartridge assembly and an anvil. The staple cartridge assembly includes a slider, a staple pusher, and a cutting blade. The staple cartridge in the staple cartridge assembly is provided with a slide groove that allows the cutting blade to pass through. The handle assembly is provided with a trigger, button, or push button for controlling the cutting blade. During operation, tissue is placed between the staple cartridge assembly and the anvil. By pulling the firing trigger, the anvil of the end effector pivots toward the staple cartridge assembly to clamp the tissue. Once the tissue is clamped, the push button is triggered to control the cutting blade to move along the slide groove of the anvil to sever the tissue. The cutting blade and the slider translate synchronously, and the slider pushes the staple pusher to rise from the staple cartridge. The staple pusher then pushes the titanium staples into the tissue to achieve tissue suturing. However, in conventional surgical instruments, the nail magazine assembly in the end effector is a disposable product, but the cutting knife needs to be reused. Reusing the cutting knife will seriously affect the sharpness of the cutting blade, thereby reducing the quality of the operation and increasing certain medical risks. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a stapler and anastomosis device with a built-in cutting blade, which can replace the stapler and the blade at the same time, thereby improving the safety of surgical instruments and reducing medical risks.

[0004] According to the first aspect of the embodiment of the present invention, a nail magazine and an anastomosis device with a built-in cutting head include: a nail magazine, a nail pusher, a bracket, a blade, and a push rod, wherein a plurality of suture nails are arranged in the nail magazine, and a slide groove extending forward and backward is provided on the lower side of the nail magazine; the nail pusher is slidably installed in the slide groove, and can push the suture nail out of the nail magazine when the nail pusher moves forward; the bracket is detachably connected to the nail magazine, and the bracket and the nail pusher are abutted to prevent the nail pusher from escaping from the slide groove; the blade is slidably installed on the nail pusher, and a blade is provided on the upper end of the blade, and the blade has a first state in which the blade is completely located in the slide groove and a second state in which the blade extends out of the slide groove; the push rod is used to drive the nail pusher to move forward and drive the blade to switch between the first state and the second state.

[0005] According to an embodiment of the utility model, a stapler and an anastomosis device with a built-in cutting blade head have at least the following beneficial effects: the blade is located in a chute of the stapler, and the blade has a first state in which the blade edge is completely located in the chute, thereby preventing the blade from injuring the operator when the stapler is installed; when the surgical instrument is cutting and suturing, first, the push rod drives the blade from the first state to the second state, causing the blade edge to extend out of the chute; the push rod is further driven forward, at which time the blade transmits the thrust of the push rod to the staple pusher, and the blade moves forward together with the staple pusher to achieve cutting and suturing of human tissue. The blade can be replaced simultaneously with the stapler, thereby improving the safety of surgical instrument use and reducing medical risks.

[0006] According to some embodiments of the present invention, a plurality of nail pushing plates are provided in the nail magazine, and the nail pushing plates are located below the corresponding suture nails. A first inclined surface is provided at the front end of the nail pusher, and the first inclined surface can push the nail pushing plate to move upward when moving forward.

[0007] According to some embodiments of the present invention, a second bevel is provided at the rear end of the blade, and a third bevel is provided at the front end of the push rod. When the push rod moves forward until the second bevel abuts against the third bevel, the second bevel can push the third bevel upward.

[0008] According to some embodiments of the present invention, an inclined surface connection block is provided on the second inclined surface, and an inclined surface connection groove for the inclined surface connection block to be embedded in is opened on the third inclined surface.

[0009] According to some embodiments of the present invention, a limiting boss is provided on the front side of the lower end of the blade, and the limiting boss can rise to abut against the lower end of the nail pusher to limit the upward movement of the blade.

[0010] According to some embodiments of the present invention, an elastic member is installed at the lower end of the nail pusher, and the elastic member abuts against the limiting boss to push the blade to move downward.

[0011] According to some embodiments of the present invention, a limiting groove extending in a vertical direction is provided at the rear end of the nail pusher, and the front end of the blade is embedded in the limiting groove and can move up and down along the limiting groove.

[0012] According to some embodiments of the present invention, guide grooves extending in a vertical direction are provided on the left and right sides of the blade, and the nail pusher is provided with guide bosses embedded in the guide grooves.

[0013] According to some embodiments of the present invention, the front ends of the left and right sides of the blade are provided with clearance grooves extending to the guide groove, and the clearance grooves allow the guide bosses to pass through during assembly.

[0014] The utility model also provides a stapler, comprising: the above-mentioned nail magazine with a built-in cutting head, a nail anvil assembly docked with the nail magazine, a knife rod assembly connected to the nail anvil assembly, and a handle assembly connected to the knife rod assembly, wherein the handle assembly can drive the push rod to move forward and backward.

[0015] According to the embodiment of the present invention, a stapler and a stapler with a built-in cutting head have at least the following beneficial effects:

[0016] (1) The blade can be replaced at the same time as the nail magazine, thereby improving the safety of surgical instruments and reducing medical risks;

[0017] (2) The bevel connection block is embedded in the bevel connection groove to prevent the push rod and the blade from shifting in the left and right directions, so that the push rod will not shake when pushing the blade to move, thereby ensuring the stability of the structure;

[0018] (3) The limiting groove limits the blade in the left and right directions, so that the blade will not shake when the nail pusher moves forward to cut the tissue, effectively ensuring the quality of surgical cutting and anastomosis.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of an installation structure of an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is an explosion diagram of an embodiment of the utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 A schematic diagram of a bracket according to an embodiment of the present invention

[0026] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0027] Figure 7 A schematic diagram of a nail pusher according to an embodiment of the present invention

[0028] Figure 8A schematic diagram of a blade according to an embodiment of the present invention

[0029] Figure 9 A schematic diagram of a push rod according to an embodiment of the present utility model

[0030] Figure 10 This is an overall schematic diagram of an anastomosis device according to an embodiment of the present invention.

[0031] Figure Number:

[0032] Nail magazine 100, slide 110;

[0033] The nail pusher 200, the first inclined surface 210, the elastic member 220, the limiting groove 230, and the guide boss 240;

[0034] Bracket 300;

[0035] The blade 400, the cutting edge 410, the second bevel 420, the bevel connecting block 421, the limiting boss 430, the guide groove 440, and the clearance groove 450;

[0036] Push rod 500, third inclined surface 510, inclined surface connecting groove 511;

[0037] Anvil assembly 600;

[0038] Tool bar assembly 700;

[0039] Handle assembly 800. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 9As shown, one embodiment of the present invention, a stapler and an anastomosis device with a built-in cutting head, includes a staple magazine 100, a staple pusher 200, a bracket 300, a blade 400, and a pusher 500. The staple magazine 100 contains a plurality of staples. The specific structure and installation method of the staple magazine 100 and the staples are prior art and will not be described in detail. Utilizing the existing staple magazine 100 and staples avoids modifying existing key production processes, effectively saving costs. A slide 110 extending forward and backward is provided on the underside of the staple magazine 100; the slide 110 vertically extends through the staple magazine 100. The staple pusher 200 slides within the slide 110. It is foreseeable that multiple auxiliary grooves will be provided on the underside of the staple magazine 100 to guide the staple pusher 200. Due to the complex force conditions experienced by the staple pusher 200 during operation, a number of guiding structures will be required to ensure that the staple pusher 200 can only move in the forward and backward directions. When the staple pusher 200 moves forward, it pushes the suture staples out of the staple magazine 100 through the opening above it. The bracket 300 is detachably connected to the staple magazine 100 via its own snap fasteners. The bracket 300 abuts against the staple pusher 200 to prevent it from disengaging from the chute 110. It is foreseeable that utilizing the existing bracket 300 can effectively save costs. Therefore, this solution only requires modifying the structures of the blade 400, staple pusher 200, and push rod 500, effectively saving costs. The blade 400 is slidably mounted on the staple pusher 200, can slide vertically, and can move back and forth with the staple pusher 200. A cutting edge 410 is provided at the upper end of the blade 400. The blade 400 has a first state in which the cutting edge 410 is completely located within the chute 110, and a second state in which the cutting edge 410 extends upward from the chute 110. During transportation, storage, and installation, the blade 400 is in the first state, in which the cutting edge 410 is completely located within the chute 110, thereby protecting the cutting edge 410 and ensuring that the cutting edge 410 remains sharp. The push rod 500 is used to drive the stapler 200 forward and is used to switch the blade 400 between the first and second states. It is foreseeable that the push rod 500 can be slidably disposed within the stapler magazine 100 and replaced with the stapler magazine. Alternatively, the push rod 500 can be disposed on the stapler bar and not replaced with the stapler magazine. When the push rod 500 moves forward, it first pushes the blade 400 from the first state to the second state, and then pushes the staple pusher 200 forward. The staple pusher 200 pushes the suture staples out of the staple magazine 100. After completing the work, the blade 400 can be replaced along with the staple magazine as a whole, avoiding a blade 400 from becoming blunt due to repeated use. Each time the staple magazine is replaced, a new blade 400 is used to work, ensuring the cutting effect of the blade 410 tissue during surgery.

[0045] Reference Figure 1As shown, it is understandable that a plurality of nail pushing plates are provided in the nail magazine 100, and the nail pushing plates are located below the corresponding suture nails. The specific structure and installation method of the nail pushing plates are conventional. The front end of the nail pusher 200 is provided with a first inclined surface 210. When the first inclined surface 210 of the nail pusher 200 moves forward, it can push the nail pushing plate upward. Since a single suture nail has a certain size in the front-to-back direction, and the nail pusher 200 moves from the back to the front, it will cause the rear end of the suture nail to move before the front end. Therefore, by pushing the nail pushing plate by the nail pusher 200 and then indirectly pushing the suture nail upward, it can be ensured that the suture nail does not tilt, so that the suture nail can move upward in parallel.

[0046] Reference Figures 1 to 9 As shown, it can be understood that the rear end of the blade 400 is provided with a second bevel 420, which is tilted downward, and the front end of the push rod 500 is provided with a third bevel 510, which is tilted upward. When the push rod 500 moves forward until the second bevel 420 and the third bevel 510 collide with each other, the second bevel 420 can push the third bevel 510 upward. By converting the forward movement of the push rod 500 into the upward movement of the blade 400, the blade 400 automatically moves to the second state during operation and then moves forward with the nail pusher 200 to cut tissue. The push rod 500 can simultaneously move the blade 400 to the second state and push the nail pusher 200 forward. The advantage is that there is no need to change the existing surgical operation method, and the operator can adapt to it without any training.

[0047] Reference Figure 8 and Figure 9 As shown, it can be understood that the second inclined surface 420 is provided with an inclined surface connection block 421, and the third inclined surface 510 is provided with an inclined surface connection groove 511 for the inclined surface connection block 421 to be inserted into. When the push rod 500 moves forward, the inclined surface connection block 421 can be inserted into the inclined surface connection groove 511, preventing the push rod 500 and the blade 400 from shifting in the left and right directions. This ensures that the push rod 500 does not shake when pushing the blade 400 to move, thereby ensuring the stability of the structure.

[0048] Reference Figures 5 to 8As shown, it is understood that a limiting boss 430 is provided on the front lower end of the blade 400. The limiting boss 430 can rise until it contacts the lower end of the staple pusher 200, limiting the upward movement of the blade 400. During operation, if the blade 400 completely separates from the staple pusher 200, it could fall to the ground or elsewhere on the operating table, causing anastomosis failure. Therefore, the blade 400 needs to be limited to ensure that it remains stable in the second position. The limiting boss 430 is larger than the limiting slot 230 on the staple pusher 200, so the limiting boss 430 cannot pass through the limiting slot 230, preventing the blade 400 from completely separating from the staple pusher 200 during upward movement. When the blade 400 is pushed upward by the push rod 500 to the second position, the limiting boss 430 contacts the lower end of the staple pusher 200, preventing the blade 400 from further upward movement. At this point, the blade 400 cannot move downward even when pushed by the push rod 500, thus being fixed in the second position. It is foreseeable that the shape of the bracket 300 matches the nail magazine 100 and the blade 400 so that the blade 400 does not collide or interfere with the bracket 300 during movement.

[0049] Reference Figure 5 As shown, it is understood that an elastic member 220 is mounted on the lower end of the nail pusher 200. A spring mounting hole is defined at the lower end of the nail pusher 200, into which the elastic member 220 partially engages. The spring mounting hole serves to position the elastic member 220, ensuring that the elastic member 220 can only be compressed in the vertical direction. It is foreseeable that the elastic member 220 may be made of rubber, a metal spring, or a metal spring. In this embodiment, the elastic member 220 is a metal spring, which abuts against the limiting boss 430 to push the blade 400 downward. It is foreseeable that the limiting boss 430 also defines a hole for the elastic member 220 to engage. During transportation, storage, and installation, the elastic member 220 remains compressed, continuously pushing the limiting boss 430 downward, maintaining the blade 400 in the first position and keeping the blade 410 fully positioned within the chute 110, thereby protecting the blade 410 and ensuring that it remains sharp. It is foreseeable that in some other embodiments of the present invention, the blade 400 is further connected to a secondary limiting boss, which abuts against the nail pusher 200 when the blade 400 is in the first state to prevent the elastic member 220 from pushing the blade 400 out of the slide groove 110.

[0050] Reference Figures 1 to 9As shown, it can be understood that the rear end of the staple pusher 200 is provided with a vertically extending limit groove 230. The size of the limit groove 230 matches the size of the blade 400, so that the blade 400 can just move up and down in the limit groove 230. The front end of the blade 400 is embedded in the limit groove 230 and can move up and down along the limit groove 230. The size of the limit groove 230 is smaller than the size of the limit boss 430, so the limit boss 430 cannot pass through the limit groove 230, preventing the blade 400 from completely leaving the staple pusher 200 during the upward movement. The main function of the limit groove 230 is to limit the blade 400 in the left and right directions, so that the blade 400 will not shake while cutting tissue as the staple pusher 200 advances. This effectively ensures the quality of the cutting and anastomosis during the surgery.

[0051] Reference Figures 5 to 9 As shown, it is understood that the blade 400 has vertically extending guide grooves 440 on both sides, and the nail pusher 200 is provided with guide bosses 240 that engage with the guide grooves 440. The guide grooves 440 cooperate with the guide bosses 240 to limit the front-to-back position of the blade 400, preventing relative displacement of the nail pusher 200 and the blade 400 in the front-to-back direction. During transportation, storage, and installation, the guide grooves 440 cooperate with the guide bosses 240 to ensure that the blade 400 does not separate from the nail pusher 200.

[0052] Reference Figures 1 to 9 As shown, it is understood that the blade 400 has clearance grooves 450 extending to the guide groove 440 at the front ends on both sides. The clearance grooves 450 allow the guide boss 240 to pass through during assembly. Since the blade 400 needs to be limited left and right, front and back, it will cause inconvenience during installation. Therefore, the clearance grooves 450 are provided to facilitate the installation of the blade 400 on the nail pusher 200. It is foreseeable that when the blade 400 is in the first and second positions, the clearance grooves 450 and the guide boss 240 are offset so that the guide boss 240 will not pass through the clearance grooves 450 in the first and second positions. During the upward movement of the blade 400, due to the thrust of the push rod 500 on the rear end of the blade 400, even if the clearance grooves 450 are aligned with the guide boss 240, the guide boss 240 cannot pass through the clearance grooves 450. Therefore, the clearance grooves 450 will not affect the normal operation of the guide boss 240. The advantage of providing the clearance groove 450 is that it effectively reduces the manufacturing difficulty and lowers the production cost.

[0053] The utility model also discloses a stapler, comprising: a staple cartridge with a built-in cutting head, a staple anvil assembly 600 docked with the staple cartridge, a knife bar assembly 700 connected to the staple anvil assembly 600, and a handle assembly 800 connected to the knife bar assembly 700, Figure 10As shown, the knife bar assembly 700 and the anvil assembly 600 are prior art and will not be described in detail. The handle assembly 800 is capable of driving the push rod 500 to move along the direction in which the slide groove 110 extends. It is foreseeable that there are two ways to implement the handle assembly 800 driving the push rod 500. The first is to connect the handle assembly 800 to the propulsion unit, which then propels the push rod 500. The second is to connect the push rod 500 to the handle assembly 800, and not replace the push rod 500 when the nail magazine is replaced.

[0054] Working principle: The staple cartridge is mounted on the anvil assembly 600, and the handle assembly 800 pushes the push rod 500 forward. When the push rod 500 moves to the point where the second inclined surface 420 abuts against the third inclined surface 510, the second inclined surface 420 can push the third inclined surface 510 upward. By converting the forward movement of the push rod 500 into the upward movement of the blade 400, the blade 400 overcomes the elastic force of the elastic member 220 and moves to the second state. The limiting boss 430 abuts against the staple pusher 200, fixing the blade 400 in the second state. The push rod 500 then continues to move forward, causing the staple pusher 200 and the blade 400 to continue moving forward to complete the cutting. As the staple pusher 200 advances, it pushes the staples out of the staple cartridge 100 to complete the suturing.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A nail magazine with a built-in cutting head, characterized in that: include: A nail box (100), wherein a plurality of suture nails are arranged in the nail box (100), and a slide groove (110) extending forward and backward is arranged on the lower side of the nail box (100); A staple pusher (200) is slidably mounted in the slide groove (110), and when the staple pusher (200) moves forward, it can push the suture staples out of the staple box (100); A bracket (300) is detachably connected to the nail magazine (100), and the bracket (300) abuts against the nail pusher (200) to prevent the nail pusher (200) from being separated from the slide groove (110); A blade (400) is slidably mounted on the nail pusher (200), a blade edge (410) is disposed at the upper end of the blade (400), and the blade (400) has a first state in which the blade edge (410) is completely located in the slide groove (110) and a second state in which the blade edge (410) extends out of the slide groove (110); The push rod (500) is used to drive the nail pusher (200) to move forward and drive the blade (400) to switch between a first state and a second state.

2. The nail magazine with a built-in cutting head according to claim 1, characterized in that: A plurality of nail pushing plates are arranged in the nail magazine (100), and the nail pushing plates are located below the corresponding suture nails. A first inclined surface (210) is arranged at the front end of the nail pusher (200), and the first inclined surface (210) can push the nail pushing plates to move upward when moving forward.

3. The nail magazine with a built-in cutting head according to claim 2, characterized in that: The blade (400) is provided with a second inclined surface (420) at the rear end, and the push rod (500) is provided with a third inclined surface (510) at the front end. When the push rod (500) moves forward until the second inclined surface (420) abuts against the third inclined surface (510), the second inclined surface (420) can push the third inclined surface (510) to move upward.

4. The nail magazine with a built-in cutting head according to claim 3, characterized in that: The second inclined surface (420) is provided with an inclined surface connection block (421), and the third inclined surface (510) is provided with an inclined surface connection groove (511) for the inclined surface connection block (421) to be embedded.

5. The nail magazine with a built-in cutting head according to claim 1, characterized in that: A limiting boss (430) is provided at the front side of the lower end of the blade (400), and the limiting boss (430) can rise to abut against the lower end of the nail pusher (200) to limit the upward movement of the blade (400).

6. The nail magazine with a built-in cutting head according to claim 5, characterized in that: An elastic member (220) is installed at the lower end of the nail pusher (200), and the elastic member (220) abuts against the limiting boss (430) to push the blade (400) to move downward.

7. The nail magazine with a built-in cutting head according to claim 6, characterized in that: The rear end of the nail pusher (200) is provided with a limiting groove (230) extending in a vertical direction, and the front end of the blade (400) is embedded in the limiting groove (230) and can move up and down along the limiting groove (230).

8. The nail magazine with a built-in cutting head according to claim 7, characterized in that: The left and right sides of the blade (400) are provided with guide grooves (440) extending in a vertical direction, and the nail pusher (200) is provided with a guide boss (240) embedded in the guide groove (440).

9. The nail magazine with a built-in cutting head according to claim 8, characterized in that: The front ends of the left and right sides of the blade (400) are provided with clearance grooves (450) extending to the guide groove (440), and the clearance grooves (450) are used for the guide boss (240) to pass during assembly.

10. A stapler, characterized in that: It comprises a nail magazine with a built-in cutting head as described in any one of claims 1 to 9, an anvil assembly (600) connected to the nail magazine, a knife bar assembly (700) connected to the anvil assembly (600), and a handle assembly (800) connected to the knife bar assembly (700), wherein the handle assembly (800) can drive the push rod (500) to move forward and backward.

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