Electric anastomat capable of being manually retreated

Abstract

The utility model discloses an electric anastomat capable of being manually retreated. The device comprises a handpiece, an assembling shell clamped on the handpiece, a rack inserted into the assembling shell, an assembling groove formed in one end of the assembling shell, a rotating shaft inserted into the assembling groove, a gear arranged on the rotating shaft in a sleeving mode, a manual operation rod movably arranged at one end of the assembling shell and provided with an abutting block, and a pressing plate arranged at one end of the assembling groove. The gun rod assembly is clamped with one end of the rack and is provided with a percussion rod; wherein the pressing plate is arranged on the rotating shaft in a sleeving mode and located above the gear, one end of the manual operation rod is provided with a pressing block used for being connected with the pressing plate in an abutting mode, one side of the rack is provided with pushing teeth used for being meshed with the gear, the other side of the rack is provided with returning teeth used for being meshed with one end of the abutting block, and the manual operation rod is upwards shifted. The abutting block is meshed with the retreating teeth and drives a percussion rod in the gun barrel assembly to retreat. According to the embodiment, the abutting block pullback rack is arranged, and the manual reset function of the firing rod in the gun barrel assembly is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to an electric stapler capable of manual retraction. Background Art

[0002] The electric stapler includes a jaw assembly, a gun barrel assembly, a cartridge assembly, etc. In one operation cycle, after inserting the jaw assembly of the stapler into the human body through a puncture hole in the human skin, first operate the stapler to close the jaw assembly to clamp the target tissue, then operate the stapler to drive the cutting knife assembly forward to push the cartridge assembly to staple the target tissue, and at the same time the cutting knife assembly also cuts the target tissue. When the stapling and cutting of the target tissue are completed, then operate the stapler to drive the cutting knife assembly to retract the knife and return to the initial position, and finally open the jaw assembly to disengage from the target tissue, and take out the jaw assembly of the stapler from the puncture hole. After that, a new cartridge can be reloaded for the next operation cycle. In the case of the electric reset failure of the electric laparoscopic cutting stapler, an operation can be performed through a manual retraction device. This device includes a rack, a gear and a gear shaft, so that the gear is disengaged from the rack, and thus the instrument can be reset by manual operation. However, the mechanism for retracting by a manual joystick on the existing electric laparoscopic stapler is relatively complex, realized by multiple parts, and has complex assembly, large resistance, and is prone to deformation, resulting in not very smooth retraction and inconvenient operation.

[0003] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric stapler capable of manual retraction that can effectively solve the above technical problems.

[0005] To achieve the purpose of the utility model, the following technical solutions are adopted:

[0006] An electric stapler capable of manual retraction, characterized in that it includes a hand-held part, an assembly shell clamped on the hand-held part, a rack inserted into the assembly shell, an assembly groove provided at one end of the assembly shell, a rotating shaft inserted into the assembly groove, a gear sleeved on the rotating shaft, a manual operating rod movably provided at one end of the assembly shell and having an abutting block, a pressing plate provided at one end of the assembly groove, and a gun barrel assembly clamped with one end of the rack and having a firing rod;

[0007] Wherein, the pressing plate is sleeved on the rotating shaft and located above the gear, one end of the manual operating rod is provided with a pressing block for abutting against the pressing plate, one side of the rack is provided with a propulsion tooth for meshing with the gear, the other side of the rack is provided with a retraction tooth for meshing with one end of the abutting block, when the manual operating rod is lifted upward, the abutting block meshes with the retraction tooth and drives the firing rod in the gun barrel assembly to retract.

[0008] Further, one end of the pressing plate is provided with a first inclined surface, and a shrinking notch is arranged at one end of the pressing plate close to the first inclined surface.

[0009] Further, one end of the assembly groove is provided with a clamping boss for abutting against the pressing plate.

[0010] Further, the top end of the clamping boss is provided with a second inclined surface for cooperatively abutting against the first inclined surface.

[0011] Further, one end of the assembly shell is provided with a limiting plate for abutting against the manual operating rod. Among them, there are two limiting plates, and the manual operating rod is arranged between the two limiting plates.

[0012] Further, the limiting plate is provided with a fixing hole, a fixing column is movably inserted into the fixing hole, and the manual operating rod is provided with a through hole. Among them, the through hole and the fixing hole have the same shape and structure and are arranged concentrically.

[0013] Further, the manual operating rod is movably connected with the abutting block. A rotating groove for assembling the abutting block is arranged on the manual operating rod. An opening is arranged on the side wall of the rotating groove, and a pin shaft with a torsion spring is movably inserted into the opening. The abutting block is sleeved on the pin shaft, and one end of the torsion spring abuts against the abutting block.

[0014] Further, a gear position boss is arranged on one side of the manual operating rod, and one end of the limiting plate is provided with a limiting surface for cooperatively abutting against one end of the gear position boss.

[0015] Further, a torsion spring bayonet for abutting against the other end of the torsion spring is arranged in the rotating groove.

[0016] Further, a spring is sleeved on the rotating shaft, and one end of the spring abuts against one end of the gear.

[0017] Compared with the prior art, the utility model has the following beneficial effects: In this embodiment, by setting the abutting block to pull back the rack, the function of manually resetting the firing rod in the gun rod assembly is realized, and the operation and assembly are simple, making the operation more time-saving and more effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification. They are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model.

[0019] Figure 1 It is the first structural schematic diagram of the utility model.

[0020] Figure 2 It is the second structural schematic diagram of the utility model.

[0021] Figure 3 This is the third structural schematic diagram of the present utility model.

[0022] Figure 4 This is the first structural schematic diagram of the retracted state of the present utility model.

[0023] Figure 5 This is the second structural schematic diagram of the retracted state of the present utility model.

[0024] Figure 6 This is the exploded view of the present utility model.

[0025] Figure 7 This is the structural schematic diagram of the manual operating rod of the present utility model.

[0026] Figure 8 This is the cross-sectional view of the manual operating rod of the present utility model.

[0027] Figure 9 This is the structural schematic diagram of the rack of the present utility model.

[0028] Figure 10 This is the structural schematic diagram of the pressure plate of the present utility model.

[0029] Figure 11 This is the structural schematic diagram of the assembly shell of the present utility model.

[0030] Figure 12 This is the fourth structural schematic diagram of the present utility model.

[0031] In the figure: 1. Handheld part; 2. Assembly shell; 3. Rack; 4. Assembly groove; 5. Gear; 6. Manual operating rod; 7. Pressure plate; 8. Gun rod assembly; 9. Firing rod; 11. Rotating shaft; 12. Spring; 21. Limiting plate; 22. Fixed hole; 23. Fixed column; 24. Limiting surface; 31. Pushing tooth; 32. Retracting tooth; 41. Positioning boss; 61. Abutting block; 62. Pressing block; 63. Rotating groove; 64. Torsion spring bayonet; 65. Torsion spring; 66. Opening; 67. Pin shaft; 68. Gear position boss; 69. Perforation; 71. First inclined surface; 72. Shrinking notch; 73. Second inclined surface. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as limiting the protection scope of the present utility model. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0034] As Figures 1 to 12 shown, a manually retractable electric stapler includes a handheld part 1, an assembly shell 2 clamped on the handheld part 1, a rack 3 inserted into the assembly shell 2, an assembly groove 4 provided at one end of the assembly shell 2, a gear 5 assembled in the assembly groove 4 and mechanically connected to a rotating shaft 11, a manual operating rod 6 movably provided at one end of the assembly shell 2 and having an abutting block 61, a pressing plate 7 provided at one end in the assembly groove 4, and a gun rod assembly 8 clamped to one end of the rack 3 and having a firing rod 9; wherein, the pressing plate 7 is sleeved on the rotating shaft 11 and located above the gear 5, one end of the manual operating rod 6 is provided with a pressing block 62 for abutting against the pressing plate 7, one side of the rack 3 is provided with a pushing tooth 31 for meshing with the gear 5, and the other side of the rack 3 is provided with a retracting tooth 32 for meshing with one end of the abutting block 61. When the handheld part 1 is powered off and the manual operating rod 6 is lifted upward, the pressing block 62 presses down the gear 5 through the pressing plate 7 and causes the gear 5 to disengage from the pushing tooth 31, the abutting block 61 meshes with the retracting tooth 32 and drives the rack 3 to retract, so that the rack 3 drives the firing rod 9 in the gun rod assembly 8 to retract.

[0035] The top end of the assembly shell 2 is provided with a limiting plate 21 for abutting against the side surface of the manual operating rod 6. Among them, there are two limiting plates 21, and the manual operating rod 6 is arranged between the two limiting plates 21; the limiting plate 21 is provided with a fixing hole 22, and a fixing column 23 is movably inserted into the fixing hole 22. The manual operating rod 6 is provided with a through hole 69. Among them, the through hole 69 has the same shape and structure as the fixing hole 22 and is arranged concentrically. The fixing column 23 passes through the fixing hole 22 and penetrates the through hole 69, so that the manual operating rod 6 is fixed on the assembly shell 2 through the fixing column 23; in this embodiment, the manual operating rod 6 is installed on the assembly shell 2 through the fixing column 23, so that the manual operating rod 6 can be manually toggled on the assembly shell 2 through the fixing column 23; it should be noted that the manual operating rod 6 is also provided with a rotating groove 63 for assembling the abutting block 61. The side wall of the rotating groove 63 is provided with an opening 66, and a pin shaft 67 for carrying a torsion spring 65 is movably inserted into the opening 66. Among them, the pin shaft 67 passes through the opening 66 to fix the abutting block 61 in the rotating groove 63. One end of the torsion spring 65 abuts against the abutting block 61, and a torsion spring bayonet 64 for abutting against the other end of the torsion spring 65 is arranged in the rotating groove 63; in this embodiment, the pin shaft 67 passes through the opening 66 and the abutting block 61 is sleeved on the pin shaft 67, and one end of the torsion spring 65 abuts against the bottom end of the abutting block 61. Through the mutual cooperation of the abutting block 61 and the torsion spring 65, the abutting block 61 is elastically connected to the manual operating rod 6. During use, the abutting block 61 is inserted into the retracting tooth 32 and drives the rack 3 to retract. When the manual operating rod 6 is reset, the abutting block 61 abuts against the rack 3 to compress the torsion spring 65. Through the compression of the torsion spring 65, a bend is generated between the abutting block 61 and the rotating groove 63, which is convenient for the manual operating rod 6 to quickly reset and prevents the abutting block 61 from meshing with the retracting tooth 32 to cause movement, facilitating the use of the user.

[0036] One side of the manual operating rod 6 is provided with a gear convex platform 68, and one end of the limiting plate 21 is provided with a limiting surface 24 for cooperatively abutting against one end of the gear convex platform 68; by setting the mutual cooperation of the limiting surface 24 and the gear convex platform 68, the moving range of the manual operating rod 6 is limited, and the convenience of use of this embodiment is enhanced.

[0037] One end of the pressing plate 7 is provided with a first inclined surface 71. One end of the pressing plate 7 close to the first inclined surface 71 is provided with a shrinking notch 72. One end of the assembly groove 4 is provided with a clamping boss 41 for abutting against the side surface of the pressing plate 7. The top end of the clamping boss 41 is provided with a second inclined surface 73 for cooperatively abutting against the first inclined surface 71. During actual use, in the initial state, the pressing plate 7 is located above the clamping boss 41. The pressing block 62 presses down the pressing plate 7. The pressing plate 7 moves to the lower part of the clamping boss 41 through the first inclined surface 71. The pressing plate 7 abuts against the bottom end of the clamping boss 41, causing the pressing plate 7 to press down the gear 5 and making the gear 5 disengage from the propulsion tooth 31. By providing the shrinking notch 72, the user can pinch the two ends of the pressing plate 7 to make the shrinking notch 72 shrink, so that the two ends of the pressing plate 7 disengage from the clamping boss 41. The user manually resets the pressing plate 7 above the clamping boss 41. It should be noted that a spring 12 is sleeved on the rotating shaft 11. One end of the spring 12 abuts against the end of the gear 5 away from the pressing plate 7. By providing the spring 12 to abut against the gear 5, the spring 12 generates an elastic supporting force on the gear 5 to push up the pressing plate 7. The pressing plate 7 can abut against the clamping boss 41 through the elastic supporting force, avoiding a gap between the pressing plate 7 and the clamping boss 41. In addition, the gear 5 can also automatically reset and rise through the supporting force of the spring 12, facilitating the engagement of the gear 5 with the propulsion tooth 31 and improving the use effect of this embodiment.

[0038] Working principle: Pull up the manual operating rod 6. The pressing block 62 on the manual operating rod 6 presses down the pressing plate 7. The pressing plate 7 moves to the lower part of the clamping boss 41 through the first inclined surface 71. The pressing plate 7 presses down the gear 5 to make the gear 5 disengage from the propulsion tooth 31. At the same time, the abutting block 61 connected to the manual operating rod 6 enters the retracting tooth 32. Continue to pull up the manual operating rod 6. The abutting block 61 drives the firing rod 9 in the gun rod assembly 8 to retract through the retracting tooth 32. When the manual operating rod 6 is pulled up to the lowest position, pull the manual operating rod 6 back in the reverse direction. The abutting block 61 can continue to retract to the initial state. Continue to pull up the manual operating rod 6 and operate cyclically until the rack 3 is retracted to the initial position. By pinching the two ends of the pressing plate 7, the shrinking notch 72 is made to shrink, so that the two ends of the pressing plate 7 disengage from the clamping boss 41. Manually reset the pressing plate 7 above the clamping boss 41. The gear 5 automatically resets and rises through the supporting force of the spring 12, making the gear 5 engage with the propulsion tooth 31 again.

[0039] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] It should be understood that those of ordinary skill in the art can make improvements or transformations based on the above description, and all such improvements and transformations shall fall within the protection scope of the appended claims of this utility model.

Claims

1. An electrically operated stapler capable of manual retraction, characterized in that: It includes a hand-held part (1), a mounting shell (2) clamped to the hand-held part (1), a rack (3) inserted into the mounting shell (2), a mounting groove (4) provided at one end of the mounting shell (2), a rotating shaft (11) inserted into the mounting groove (4), a gear (5) sleeved on the rotating shaft (11), a manual operating rod (6) movably provided at one end of the mounting shell (2) and having an abutting block (61), a pressing plate (7) provided at one end of the mounting groove (4), and a gun rod assembly (8) clamped to one end of the rack (3) and having a firing rod (9); Among them, the pressing plate (7) is sleeved on the rotating shaft (11) and is located above the gear (5). One end of the manual operating rod (6) is provided with a pressing block (62) for abutting against the pressing plate (7). One side of the rack (3) is provided with a propulsion tooth (31) for meshing with the gear (5), and the other side of the rack (3) is provided with a retracting tooth (32) for meshing with one end of the abutting block (61). When the manual operating rod (6) is pulled upward, the abutting block (61) meshes with the retracting tooth (32) and drives the firing rod (9) in the gun rod assembly (8) to retract.

2. The electric stapler capable of manual retraction according to claim 1, wherein: One end of the pressing plate (7) is provided with a first inclined surface (71), and a shrinking notch (72) is provided at one end of the pressing plate (7) close to the first inclined surface (71).

3. The electric stapler capable of manual retraction according to claim 2, wherein: One end of the mounting groove (4) is provided with a clamping convex platform (41) for abutting against the pressing plate (7).

4. The electric stapler capable of manual retraction according to claim 3, wherein: The top end of the clamping convex platform (41) is provided with a second inclined surface (73) for cooperatively abutting against the first inclined surface (71).

5. The electric stapler capable of manual retraction according to claim 4, wherein: One end of the mounting shell (2) is provided with a limiting plate (21) for abutting against the manual operating rod (6). Among them, there are two limiting plates (21), and the manual operating rod (6) is provided between the two limiting plates (21).

6. The electric stapler capable of manual retraction according to claim 5, characterized in that: The limiting plate (21) is provided with a fixing hole (22), and a fixing column (23) is movably inserted into the fixing hole (22). The manual operating rod (6) is provided with a perforation (69). Among them, the perforation (69) has the same shape and structure as the fixing hole (22) and is arranged concentrically.

7. The electric stapler capable of manual retraction according to claim 6, wherein: The manual operating rod (6) is movably connected to the abutting block (61). The manual operating rod (6) is provided with a rotating groove (63) for mounting the abutting block (61). An opening (66) is provided on the side wall of the rotating groove (63), and a pin shaft (67) with a torsion spring (65) is movably inserted into the opening (66). The abutting block (61) is sleeved on the pin shaft (67), and one end of the torsion spring (65) abuts against the abutting block (61).

8. The electric stapler capable of manual retraction according to claim 7, characterized in that: One side of the manual operating rod (6) is provided with a gear position convex platform (68), and one end of the limiting plate (21) is provided with a limiting surface (24) for cooperatively abutting against one end of the gear position convex platform (68).

9. The electric stapler capable of manual retraction according to claim 8, wherein: A torsion spring bayonet (64) for abutting against the other end of the torsion spring (65) is provided in the rotating groove (63).

10. A manually retractable electric stapler as claimed in claim 1, wherein: A spring (12) is sleeved on the rotating shaft (11), and one end of the spring (12) abuts against one end of the gear (5).

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