Electric anastomat rollback structure

Abstract

The utility model discloses an electric anastomat retracting structure which comprises a mounting frame, the mounting frame is provided with a transmission assembly, the transmission assembly is connected with a retracting assembly, and the transmission assembly comprises a transmission shaft, a main transmission gear and an auxiliary transmission gear; the transmission device is simple in structure and reasonable in design, the transmission shaft moves downwards in the first direction under the counter-acting force of the limiting wire cylinder, the transmission shaft pushes the main transmission gear when moving downwards in the first direction, splines of the main transmission gear and the auxiliary transmission gear are separated, and a first boss on the transmission shaft is meshed with a second boss of the auxiliary transmission gear. And the transmission shaft continues to rotate to enable the auxiliary transmission gear to rotate so as to drive the tool retracting assembly to advance or retreat in the first direction, the situation that after the electric function fails, the driving assembly is locked, tool retracting cannot be conducted or the tool retracting operation is hindered is effectively avoided, and huge surgical risks are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric staplers, in particular to a retraction structure of an electric stapler. Background Art

[0002] Electric staplers usually use titanium nails and blades to separate, resect or establish anastomosis of tissues, and are often used in general surgery, thoracic surgery, urology and other surgical operations. Given that manual staplers have strict requirements on the user's usage skills and operating strength, electric staplers with low operating difficulty are widely used.

[0003] Deficiencies of existing technology:

[0004] The existing electric staplers are driven by an electric drive mechanism. In some cases, there is a risk of failure of the electric function, resulting in a huge surgical risk that the jaws of the electric stapler cannot be opened and the cutting edge cannot be retracted, causing serious consequences to the surgical process. Utility Model Content

[0005] The purpose of the utility model is to provide a retraction structure of an electric stapler to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: an electric stapler retraction structure, comprising a mounting frame, wherein the length direction and the height direction of the mounting frame are respectively arranged in a first direction and a second direction; the mounting frame is provided with a transmission assembly, the transmission assembly is connected with a knife retraction assembly, and the transmission assembly comprises:

[0007] A transmission shaft, the transmission shaft is arranged on the mounting frame, and the transmission shaft is connected with a retraction wrench in the second direction;

[0008] A main transmission gear, the main transmission gear is arranged on the transmission shaft;

[0009] A secondary transmission gear, wherein the secondary transmission gear is arranged on the transmission shaft, the secondary transmission gear is arranged above the main transmission gear along the second direction, and the main transmission gear is connected to the secondary transmission gear.

[0010] Preferably, the transmission shaft is connected with a retraction wrench in the second direction.

[0011] Preferably, the tool retracting assembly is provided with a gear bar, and the auxiliary transmission gear is meshed with the gear bar.

[0012] Preferably, the main transmission gear is connected to a driving assembly, and the driving assembly controls the rotation of the main transmission gear. The main transmission gear and the auxiliary transmission gear are connected by setting a spline.

[0013] Preferably, the transmission shaft is connected to a limiting wire drum in the second direction.

[0014] Preferably, a first boss is arranged above the transmission shaft, and a second boss is arranged on the top of the auxiliary transmission gear.

[0015] Preferably, the auxiliary transmission gear controls the knife retracting assembly to run in the first direction.

[0016] Preferably, the first direction and the second direction are perpendicular to each other.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The electric stapler retraction structure is provided with a transmission assembly, which includes a transmission shaft, a main transmission gear and a sub-transmission gear. The transmission shaft moves downward in a first direction under the reaction force of a limiting wire drum, and pushes the main transmission gear when moving downward in the first direction. The splines of the main transmission gear and the sub-transmission gear are separated, and the first boss on the transmission shaft is meshed with the second boss of the sub-transmission gear. The transmission shaft continues to rotate to rotate the sub-transmission gear, thereby driving the retraction assembly to move forward or backward in the first direction, effectively avoiding the situation in which the drive assembly is locked after the electric function fails, and the retraction operation cannot be performed or is hindered, and avoiding huge surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is an exploded view of the overall structure of the utility model;

[0021] Figure 3 It is an enlarged schematic diagram of point A of the utility model;

[0022] In the figure: 110, mounting frame; x, first direction; y, second direction; 120, retracting assembly; 121, gear bar; 131, transmission shaft; 132, main transmission gear; 133, auxiliary transmission gear; 140, retraction wrench; 150, limiting wire drum; 161, first boss; 162, second boss. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0025] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0027] Example

[0028] See also Figure 1-3 As shown, the utility model provides a technical solution of an electric stapler retraction structure: comprising a mounting frame 110, wherein a first direction x and a second direction y are respectively arranged along the length direction and the height direction of the mounting frame 110, and the first direction x and the second direction y are perpendicular to each other; the mounting frame 110 is provided with a transmission assembly, and the transmission assembly is connected with a knife retraction assembly 120, and the transmission assembly comprises a transmission shaft 131, a main transmission gear 132 and a sub-transmission gear 133, the transmission shaft 131 is arranged on the mounting frame 110, the main transmission gear 132 is arranged on the transmission shaft 131, and the sub-transmission gear 133 is arranged on the transmission shaft 13 1. The auxiliary transmission gear 133 is arranged above the main transmission gear 132 along the second direction y. The main transmission gear 132 and the auxiliary transmission gear 133 are connected by a connecting component, such as a spline. The main transmission gear 132 is connected to a driving component. When working, the main transmission gear 132 is controlled to rotate by the driving component, and the auxiliary transmission gear 133 is driven to move through the spline. The retracting assembly 120 is provided with a gear bar 121, and the auxiliary transmission gear 133 is meshed with the gear bar 121. When the auxiliary transmission gear 133 moves, the auxiliary transmission gear 133 drives the retracting assembly 120 to move forward and backward in the first direction x.

[0029] Furthermore, the transmission shaft 131 is connected with a retraction wrench 140 in the second direction y, and the transmission shaft 131 is connected with the limited wire drum 150 in the second direction y. A first boss 161 is arranged above the transmission shaft 131, and a second boss 162 is arranged on the top of the auxiliary transmission gear 133. After the electric function of the driving component fails, it is necessary to manually retract the tool. The retraction wrench 140 is manually used to rotate the transmission shaft 131. The transmission shaft 131 moves downward in the first direction x under the reaction force of the limited wire drum 150. The transmission shaft 131 moves downward in the first direction x. When moving downward toward x, the main transmission gear 132 is pushed, the splines of the main transmission gear 132 and the auxiliary transmission gear 133 are separated, the first boss 161 on the transmission shaft 131 and the second boss 162 of the auxiliary transmission gear 133 are meshed, and the transmission shaft 131 continues to rotate to rotate the auxiliary transmission gear 133, thereby driving the retracting assembly 120 to move forward or backward in the first direction x, effectively avoiding the situation where the driving assembly is locked after the electric function fails, and the retracting operation cannot be performed or is hindered, thereby avoiding huge surgical risks.

[0030] The working principle of the utility model is as follows:

[0031] When the electric stapler retraction structure of the present embodiment is used, after the electric function of the driving assembly fails, it is necessary to manually retract the knife. The retraction wrench 140 is manually used to rotate the transmission shaft 131. The transmission shaft 131 moves downward in the first direction x under the reaction force of the limiting wire drum 150. When the transmission shaft 131 moves downward in the first direction x, it pushes the main transmission gear 132. The splines of the main transmission gear 132 and the auxiliary transmission gear 133 are separated, and the first boss 161 on the transmission shaft 131 and the second boss 162 of the auxiliary transmission gear 133 are meshed. The transmission shaft 131 continues to rotate to rotate the auxiliary transmission gear 133, thereby driving the retraction assembly 120 to advance or retreat in the first direction x, effectively avoiding the situation where the driving assembly is locked after the electric function fails, and the knife retraction operation cannot be performed or is hindered, and avoiding huge surgical risks.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electric stapler retraction structure, comprising a mounting frame (110), characterized in that: The length direction and the height direction along the installation frame (110) are respectively a first direction (x) and a second direction (y); the installation frame (110) is provided with a transmission assembly, the transmission assembly is connected to a knife retracting assembly (120), and the transmission assembly comprises: A transmission shaft (131), wherein the transmission shaft (131) is arranged on the mounting frame (110); A main transmission gear (132), wherein the main transmission gear (132) is arranged on the transmission shaft (131); A secondary transmission gear (133), wherein the secondary transmission gear (133) is arranged on the transmission shaft (131), and the secondary transmission gear (133) is arranged above the main transmission gear (132) along the second direction (y), and the main transmission gear (132) and the secondary transmission gear (133) are connected.

2. The electric stapler retraction structure according to claim 1, characterized in that: The transmission shaft (131) is connected to a retraction wrench (140) in the second direction (y).

3. The electric stapler retraction structure according to claim 1, characterized in that: The knife retracting assembly (120) is provided with a gear bar (121), and the auxiliary transmission gear (133) is meshed with the gear bar (121).

4. The electric stapler retraction structure according to claim 1, characterized in that: The main transmission gear (132) is connected to a driving assembly, and the driving assembly controls the rotation of the main transmission gear (132). The main transmission gear (132) and the auxiliary transmission gear (133) are connected by a spline.

5. The electric stapler retraction structure according to claim 1, characterized in that: The transmission shaft (131) is connected to the limiting wire drum (150) in the second direction (y).

6. The electric stapler retraction structure according to claim 1, characterized in that: A first boss (161) is arranged above the transmission shaft (131), and a second boss (162) is arranged on the top of the auxiliary transmission gear (133).

7. The electric stapler retraction structure according to claim 2, characterized in that: The auxiliary transmission gear (133) controls the knife retracting assembly (120) to run in the first direction (x).

8. The electric stapler retraction structure according to claim 1, characterized in that: The first direction (x) and the second direction (y) are perpendicular to each other.

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