Barrel assembly and endoscopic stapler

Abstract

The present invention discloses a gun barrel assembly and a laparoscopic stapler, wherein the gun barrel assembly comprises a gun barrel body, a stapler seat assembly is installed at the head of the gun barrel body, a knob assembly is installed at the tail, a pull rod is arranged inside the gun barrel body, an angle control member is arranged at the head of the pull rod, the stapler seat assembly is connected to the gun barrel body through the angle control member, a slider assembly is fixed at the tail of the pull rod, the slider assembly is driven to move forward and backward by turning the knob assembly, the slider assembly drives the pull rod to move forward and backward, and the stapler seat assembly is driven to rotate left and right by the forward and backward movement of the pull rod, and the laparoscopic stapler adopts the above-mentioned gun barrel assembly. Through the above-mentioned method, the gun barrel assembly and the laparoscopic stapler of the present invention can manually adjust the anastomosis direction of the head of the laparoscopic stapler, the turning range of the anastomosis head is large, and the anastomosis angle required by the stapler can be intuitively adjusted, so as to solve the anastomosis steering adjustment problem of the gun barrel assembly and the head of the laparoscopic stapler, so that the doctor can easily adjust the anastomosis direction of the stapler assembly.

Description

Technical Field

[0001] The present invention relates to the field of electric staplers, and in particular to a barrel assembly and a laparoscope stapler. Background Art

[0002] Laparoscopic staplers are currently the main products for minimally invasive surgery. They are suitable for tissue resection, transection and anastomosis in abdominal, obstetrics and gynecology, pediatric and thoracic surgery. They can also be used for resection and transection of liver parenchyma, liver blood vessels and gallbladder ducts.

[0003] Currently, it is difficult to adjust the conventional anastomotic direction of the laparoscopic stapler, and the adjustment angle is ≤90°, which cannot meet the doctor's needs. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a barrel assembly and a laparoscopic stapler, which can manually adjust the anastomotic direction of the head of the laparoscopic stapler to the left and right, have a large turning range of the anastomotic head, and can intuitively adjust the anastomotic angle required by the stapler, thereby solving the anastomotic steering adjustment problem of the barrel assembly and the head of the laparoscopic stapler, and allowing the doctor to easily adjust the anastomotic direction of the stapler assembly.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a barrel assembly for a laparoscopic stapler, comprising a barrel body, a staple cartridge seat assembly being installed at the head of the barrel body, and a knob assembly being installed at the tail.

[0006] A pull rod is provided inside the barrel body, an angle control member is provided at the head of the pull rod, the magazine seat assembly is connected to the barrel body through the angle control member, and a slider assembly linked to the knob assembly is fixed at the tail of the pull rod.

[0007] The knob assembly is turned to drive the slider assembly to move forward and backward, and the slider assembly drives the pull rod to move forward and backward, and the forward and backward movement of the pull rod drives the nail magazine seat assembly to rotate left and right.

[0008] In a preferred embodiment of the present invention, the barrel body includes a sleeve assembly, which includes a front sleeve and a rear sleeve, the front sleeve is hinged to the head of the rear sleeve through an aluminum ring and a sleeve connecting piece, the tail of the rear sleeve is fixedly connected to a rotating head, and a knob assembly is connected to the rotating head.

[0009] In a preferred embodiment of the present invention, the knob assembly includes a fixed upper cover, a fixed lower cover, a knob, a connecting fork and a toothed piece.

[0010] The knob is buckled into the connecting fork between the fixed upper cover and the fixed lower cover and the connecting fork passes through the tooth plate. A compression wave spring is placed between the tooth plate and the knob to abut against the knob.

[0011] In a preferred embodiment of the present invention, the slider assembly includes a slider body. A cavity is provided inside the slider body, and a steering slider and a slider compression spring are arranged in the cavity. The two convex points at the end of the connecting fork are buckled into the chute of the steering slider.

[0012] The steering slider includes a first slider and a second slider that cooperate with each other. The tail of the pull rod is located in the slideway between the first slider and the second slider and can move back and forth along the slideway.

[0013] In a preferred embodiment of the present invention, the inside of the sleeve assembly further includes a thimble seat and a tool rest. The thimble seat is inserted into the head of the rear sleeve, and the cartridge seat assembly is fixed to the thimble seat through an angle control member.

[0014] In a preferred embodiment of the present invention, the cartridge seat assembly includes a cartridge seat and an anvil connected to the cartridge seat. The cartridge seat assembly is fixed to the angle control member through a spring pin.

[0015] The pull rod cooperates with the angle control member through the head chute. The round hole at the tail of the angle control member is connected to the cylindrical boss of the thimble seat, enabling the cartridge seat assembly to rotate around the cylindrical boss of the thimble seat.

[0016] In a preferred embodiment of the present invention, two pull rods are provided inside the sleeve assembly. The chutes at the front ends of the two pull rods respectively cooperate with the cylindrical bosses on the left and right sides of the angle control member. When the pull rods move back and forth, they drive the cartridge seat assembly to rotate left and right.

[0017] In a preferred embodiment of the present invention, the thimble seat is connected to the head of the tool rest, the tail of the tool rest is connected to the mandrel inside the sleeve assembly, and the mandrel is connected to the pull rod and moves together with the pull rod.

[0018] A cutting knife and a tool rest cover are connected to the tool rest. The tail of the pull rod is fixed to the tool rest through the slider assembly and the fixed upper cover and the fixed lower cover. The cutting knife performs a back-and-forth cutting movement along with the pull rod.

[0019] In a preferred embodiment of the present invention, the knob assembly at the tail of the barrel body can rotate left and right, and drives the head cartridge seat assembly to rotate left and right through the pull rod. The steering angle range for the cartridge seat assembly to rotate left or right is 0 to 60 degrees.

[0020] To solve the above technical problems, another technical solution adopted by the present invention is: to provide a laparoscopic stapler, including: a handle, a barrel assembly, and a cartridge assembly. The cartridge assembly, the barrel assembly, and the handle are connected in sequence.

[0021] The beneficial effects of the present invention are as follows: The barrel assembly and the endoscopic stapler of the present invention can manually adjust the anastomosis direction of the head of the endoscopic stapler left and right. The anastomosis head has a large turning range and can visually adjust the anastomosis angle required by the stapler, solving the problem of adjusting the anastomosis steering of the barrel assembly and the head of the endoscopic stapler, enabling doctors to easily adjust the anastomosis direction of the cartridge assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0023] Figure 1 is a schematic structural diagram of a preferred embodiment of the barrel assembly and the endoscopic stapler of the present invention;

[0024] Figure 2 is an exploded view of a preferred embodiment of the barrel assembly and the endoscopic stapler of the present invention;

[0025] The labels of each component in the drawings are as follows: 1. Cartridge seat assembly, 101. Cartridge seat, 102. Anvil, 2. Sleeve assembly, 3. Cutting knife, 4. Angle control member, 401. Round hole, 5. Spring pin, 6. Knob assembly, 7. Thimble seat, 701. Convex point, 8. Knife holder, 9. Mandrel, 10. Pull rod, 11. Front sleeve, 12. Aluminum ring, 13. Sleeve connecting piece, 14. Rear sleeve, 15. Steering slider, 1501. First slider, 1502. Second slider, 1503. Slideway, 16. Fixed lower cover, 17. Connecting fork, 1701. Convex point, 18. Fixed upper cover, 19. Rotating head, 20. Wave spring, 21. Tooth piece, 22. Knob, 23. Slider body, 24. Slider compression spring, 25. Knife holder cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Please refer to Figures 1 to 2 , the embodiments of the present invention include:

[0028] Embodiment 1

[0029] A barrel assembly for a laparoscopic stapler comprises a barrel body, a staple cartridge seat assembly 1 is mounted at the head of the barrel body, and a knob assembly 6 is mounted at the tail. The rotation direction and rotation angle of the staple cartridge seat assembly 1 can be adjusted by rotating the knob assembly 6, thereby achieving adjustment of the anastomosis direction.

[0030] A pull rod 10 is provided inside the barrel body to realize the linkage between the knob assembly and the nail magazine seat assembly 1, wherein the head of the pull rod 10 is provided with an angle control component 4, and the nail magazine seat assembly 1 is connected to the barrel body through the angle control component 4. A slider assembly linked to the knob assembly is fixed to the tail of the pull rod 10. Turning the knob assembly drives the slider assembly to move forward and backward, and the slider assembly drives the pull rod 10 to move forward and backward. The forward and backward movement of the pull rod 10 drives the nail magazine seat assembly 1 to rotate left and right.

[0031] Furthermore, the barrel body includes a sleeve assembly 2, which includes a front sleeve 11 and a rear sleeve 14. The front sleeve 11 is hinged to the head of the rear sleeve 14 through an aluminum ring 12 and a sleeve connecting piece 13. The tail of the rear sleeve 14 is fixedly connected with a rotating head 19, which is rubber-coated on the sleeve assembly 2.

[0032] A knob assembly 6 is provided on the sleeve assembly 2 near the rotating head 19. Further, the knob assembly 6 includes a fixed upper cover 18, a fixed lower cover 16, a knob 22, a connecting fork 17 and a tooth piece 21:

[0033] The knob 22 is buckled into the connecting fork 17 between the fixed upper cover 18 and the fixed lower cover 16 and the connecting fork 17 passes through the tooth plate 21. A compressed wave spring 20 is placed between the tooth plate 21 and the knob 22 to support the knob 22. This can ensure that the knob 22 will not rotate easily and can be fixed at a desired angle. The two protrusions 1701 at the end of the connecting fork 17 are buckled into the slide groove of the slider assembly.

[0034] The slider assembly includes a slider body 23, a cavity is provided in the slider body 23, a steering slider 15 and a slider compression spring 24 are provided in the cavity, two protrusions 1701 at the end of the connecting fork 17 are snapped into the slide groove of the steering slider 15, the steering slider 15 includes a first slider 1501 and a second slider 1502 that cooperate with each other, and the tail end of the pull rod 10 is located in the slide 1503 between the first slider 1501 and the second slider 1502 and can move forward and backward along the slide 1503.

[0035] When the knob assembly is in use, the end face of the connecting fork 17 presses the slider body, and the protrusion 1701 falls into the slide groove 1503 at the top of the steering slider 15. At this time, the knob 22 rotates to drive the protrusion 1701 on the head of the connecting fork 17 to move in the slide groove 1503 of the steering slider 15, and drives the steering slider 15 to move forward and backward, thereby driving the pull rod 10 to move forward and backward.

[0036] The inside of the cannula assembly further includes a thimble seat 7 and a tool rest 8. The thimble seat 7 is inserted into the head of the rear cannula 14, and the cartridge seat assembly 1 is fixed to the thimble seat 7 by an angle control member 6.

[0037] The cartridge seat assembly 1 includes a cartridge seat 101 and an anvil 102 connected to the cartridge seat 101. The cartridge seat assembly 1 is fixed to the angle control member 4 by a spring pin 5. The pull rod 10 is matched with the angle control member 4 through a head chute. The circular hole 401 at the tail of the angle control member 4 is connected to the cylindrical boss 701 of the thimble seat 7, so that the cartridge seat assembly 1 can rotate around the cylindrical boss 701 of the thimble seat 7.

[0038] Specifically, two pull rods 10 are provided inside the cannula assembly. The cylindrical boss 701 of the thimble seat 7 is caught on the left and right sides of the angle control member 4. The chutes at the front ends of the two pull rods 10 are respectively matched with the cylindrical bosses 701 on the left and right sides of the angle control member 4. When the pull rod 10 moves back and forth, it drives the cartridge seat assembly 1 to rotate left and right.

[0039] Furthermore, the thimble seat 7 is connected to the head of the tool rest 8. The tail of the tool rest 8 is connected to the mandrel 9 inside the cannula assembly. The mandrel 9 is connected to the pull rod 10 and moves together with the pull rod 10. A cutting knife 3 and a tool rest cover 25 are connected to the tool rest 8. The tail of the pull rod 10 is fixed to the tool rest 8 through a slider assembly with the fixed upper cover 18 and the fixed lower cover 16. The cutting knife 3 performs a forward and backward cutting movement along with the mandrel 9.

[0040] Embodiment 2

[0041] A laparoscopic stapler includes: a handle, a barrel assembly, and a cartridge assembly. The barrel assembly is the barrel assembly in Embodiment 1. The cartridge assembly, the barrel assembly, and the handle are connected in sequence. The barrel assembly is installed on the handle. The cartridge assembly selects a corresponding model according to the use requirement and is then installed on the cartridge seat assembly of the barrel assembly.

[0042] The knob assembly on the barrel assembly can be rotated left and right to drive the cartridge seat assembly to rotate left and right. The cartridge assembly rotates along with the rotation of the cartridge seat, facilitating the adjustment of the anastomosis direction.

[0043] The working principle of the laparoscopic stapler is:

[0044] Rotate the knob assembly on the barrel assembly left and right. The rotation of the knob 22 drives the end face of the connecting fork to press against the slider body, and the convex point on the connecting fork falls into the chute at the top of the steering slider.

[0045] At this time, the rotation of the knob 22 drives the convex point at the head of the fork 17 to move in the chute of the steering slider 15, and drives the steering slider 15 to move back and forth, thereby driving the pull rod 10 to move back and forth along the slideway of the steering slider 15;

[0046] The other end of the pull rod 10 is connected to the angle control member 4. The sliding grooves at the front end of the pull rod 10 cooperate with the cylindrical bosses 701 on the left and right sides of the angle control member 4 respectively. When the pull rod 10 moves back and forth, it drives the staple cartridge seat assembly 1 to rotate left and right.

[0047] In the endoscopic stapler of the present invention, the steering angle range for the staple cartridge seat assembly 1 to rotate left or right is 0 to 60 degrees, that is, the total steering angle range of the staple cartridge seat assembly 1 is 0 to 120° for anastomosis use.

[0048] The beneficial effects of the barrel assembly and the endoscopic stapler of the present invention are:

[0049] The anastomosis direction of the head of the endoscopic stapler can be adjusted left and right by a manual button, and the required anastomosis angle of the stapler can be adjusted intuitively;

[0050] It can solve the problem of adjusting the anastomosis steering of the barrel assembly and the head of the endoscopic stapler, enabling the doctor to adjust the anastomosis direction of the staple cartridge assembly within the range of 0 to 120° in an easy manner through a knob.

[0051] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A barrel assembly for a laparoscopic stapler, characterized in that, Comprising: A barrel body, with a staple magazine seat assembly installed at the head of the barrel body and a knob assembly installed at the tail. A pull rod is provided inside the barrel body. An angle control member is provided at the head of the pull rod. The staple magazine seat assembly is connected to the barrel body through the angle control member. A slider assembly linked to the knob assembly is fixed at the tail of the pull rod. Turn the knob assembly to drive the slider assembly to move back and forth. The slider assembly drives the pull rod to move back and forth. The back-and-forth movement of the pull rod drives the staple magazine seat assembly to rotate left and right. Among them, the barrel body includes a sleeve assembly. The sleeve assembly includes a front sleeve and a rear sleeve. The front sleeve is hinged to the head of the rear sleeve through an aluminum ring and a sleeve connecting piece. A rotating head is fixedly connected to the tail of the rear sleeve. The knob assembly is connected near the rotating head. A thimble seat and a tool rest are further included inside the sleeve assembly. The thimble seat is inserted into the head of the rear sleeve. The staple magazine seat assembly is fixed on the thimble seat through the angle control member. The staple magazine seat assembly includes a staple magazine seat and an anvil connected to the staple magazine seat. The staple magazine seat assembly is fixed together with the angle control member through a spring pin. The pull rod cooperates with the angle control member through a head chute. The round hole at the tail of the angle control member is connected to the cylindrical boss of the thimble seat, enabling the staple magazine seat assembly to rotate around the cylindrical boss of the thimble seat. Two pull rods are provided inside the sleeve assembly. The chutes at the front ends of the two pull rods respectively cooperate with the cylindrical bosses on the left and right sides of the angle control member. When the pull rods move back and forth, they drive the staple magazine seat assembly to rotate left and right.

2. The barrel assembly according to claim 1, characterized in that, The knob assembly includes a fixed upper cover, a fixed lower cover, a knob, a connecting fork, and a toothed piece. The knob is buckled into the connecting fork between the fixed upper cover and the fixed lower cover and makes the connecting fork pass through the toothed piece. A compression wave spring is placed between the toothed piece and the knob to abut against the knob.

3. The barrel assembly according to claim 2, wherein, The slider assembly includes a slider body. A cavity is provided inside the slider body. A steering slider and a slider compression spring are provided inside the cavity. Two convex points at the end of the connecting fork are buckled into the chute of the steering slider. The steering slider includes a first slider and a second slider that cooperate with each other. The tail of the pull rod is located in the slideway between the first slider and the second slider and can move back and forth along the slideway.

4. The barrel assembly according to claim 1, characterized in that, The thimble seat is connected to the head of the tool rest. The tail of the tool rest is connected to a mandrel inside the sleeve assembly. The mandrel is connected to the pull rod and moves together with the pull rod. A cutting knife and a tool rest cover are connected to the tool rest. The tail of the pull rod is fixed to the tool rest through the slider assembly, the fixed upper cover, and the fixed lower cover. The cutting knife makes a back-and-forth cutting movement along with the pull rod.

5. The barrel assembly according to any one of claims 1 to 4, characterized in that The knob assembly at the tail of the barrel body can rotate left and right and drives the staple magazine seat assembly at the head to rotate left and right through the pull rod. The steering angle range for the staple magazine seat assembly to rotate left or right is 0 to 60 degrees.

6. A laparoscopic stapler, comprising: A handle, a barrel assembly, and a staple magazine assembly, characterized in that the barrel assembly is the barrel assembly as described in claim 5, and the staple magazine assembly, the barrel assembly, and the handle are connected in sequence.

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