A clutch mechanism and electric stapler

Abstract

The utility model discloses a clutch mechanism and an electric stapler, belonging to the field of medical devices. The electric stapler comprises a housing, a driving motor, a driving gear, a rotating shaft, an intermediate gear and a driving rack. The driving motor drives the driving rack to move through the driving gear and the intermediate gear. The driving rack is used to move back and forth to drive the electric stapler to work. The clutch mechanism comprises a clamping member and a pushing member. The clamping member clamps the intermediate gear. The pushing member is slidably connected to the housing along the length direction of the driving rack. The length direction of the pushing member is inclined to the length direction of the driving rack. The pushing member is used to drive the intermediate gear to move along the axial direction of the rotating shaft through the clamping member. When the clamping member abuts against one end of the pushing member, the intermediate gear meshes with the driving gear. When the clamping member abuts against the other end of the pushing member, the intermediate gear is staggered from the driving gear. The clutch mechanism and the electric stapler of the utility model can realize the staggering of the intermediate gear and the driving gear, and the structure is simple and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a clutch mechanism and an electric stapler. Background Art

[0002] The electric stapler is a medical device that replaces the traditional manual suturing of wounds. The electric stapler can be widely used for tissue suturing and cutting in surgical operations. The electric stapler may fail to close its jaws smoothly, affecting the normal use of the electric stapler. In order to reduce the further harm caused by the electric stapler to the patient, a clutch mechanism is generally provided on the electric stapler, and the clutch mechanism is used to disengage the drive mechanism from the drive rack. The patent text with application number 202310816326.0 discloses an electric laparoscopic stapler, including a mounting seat, a switching assembly, a locking assembly, a clutch gear and a feed rack. The clutch gear and the feed rack have a meshing state and a disengagement state. The clutch gear and the feed rack are switched between the meshing state and the disengagement state by the switching assembly. The switching assembly is equivalent to a clutch mechanism. The switching assembly includes a touch component and a first spring. The touch component includes a touch section, a first extension section, a second extension section and a second spring, so that there are many parts in the clutch mechanism, the structure is complex, and the cost is high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a clutch mechanism and an electric stapler, which solves the problems of the clutch mechanism in the prior art having many parts, a complex structure and high cost.

[0004] According to a clutch mechanism of an embodiment of the utility model, the electric stapler includes a housing, a drive motor, a drive gear, a rotating shaft, an intermediate gear and a drive rack, the drive motor is installed in the housing, the drive gear is connected to the output end of the drive motor, the intermediate gear is rotatably connected to the rotating shaft, the intermediate gear is meshed with the drive gear and the drive rack, the drive rack is used to move back and forth to drive the electric stapler to work, and the clutch mechanism includes:

[0005] A clamping member, wherein the clamping member clamps the intermediate gear;

[0006] A pushing member, the pushing member abuts against the clamping member, the pushing member is slidably connected to the casing along the length direction of the driving rack, one end of the pushing member extends out of the casing, the length direction of the pushing member is inclined to the length direction of the driving rack, the pushing member is used to drive the intermediate gear to move along the axial direction of the rotating shaft through the clamping member, when the clamping member abuts against one end of the pushing member, the intermediate gear is meshed with the driving gear, when the clamping member abuts against the other end of the pushing member, the intermediate gear is staggered with the driving gear, and the length direction of the driving rack is perpendicular to the axial direction of the rotating shaft.

[0007] A clutch mechanism according to an embodiment of the utility model has at least the following beneficial effects:

[0008] In the normal state, the clamping member clamps the intermediate gear, the clamping member abuts against one end of the pushing member, the intermediate gear is meshed with the driving gear and the driving rack, and the electric stapler works normally. When the electric stapler fails, the pushing member can be operated to extend out of the casing, drive the pushing member to move, drive the clamping member to move, so that the clamping member abuts against the other end of the pushing member, and the clamping member drives the intermediate gear to stagger with the driving gear, so that the driving mechanism and the driving rack are disengaged, reducing the electric stapler from causing further harm to the patient during surgery, with a simple structure and low cost.

[0009] According to some embodiments of the utility model, the clamping member includes a connecting plate and two clamping plates, the two clamping plates are connected to both ends of the connecting plate, the two clamping plates are respectively located on both sides of the intermediate gear, and the pushing member abuts against the clamping plates.

[0010] According to some embodiments of the utility model, a sleeve hole is provided on the clamping plate, and the rotating shaft is passed through the sleeve hole.

[0011] According to some embodiments of the utility model, a limiting hole is provided on the pushing member, the connecting plate is slidably connected in the limiting hole, and the limiting hole is used to limit the rotation of the clamping member.

[0012] According to some embodiments of the present utility model, the pushing member includes a pushing portion, and the pushing portion extends between the two clamping plates, and the two clamping plates are located on both sides of the pushing portion.

[0013] According to some embodiments of the utility model, two pushing inclined surfaces are provided on the upper and lower sides of the pushing portion, the pushing inclined surfaces are inclined to the axial direction of the rotating shaft, and the two pushing inclined surfaces respectively abut against two clamping plates.

[0014] According to some embodiments of the utility model, the clamping plate includes a first clamping part and a second clamping part, the two first clamping parts clamp the intermediate gear, the two second clamping parts clamp the pushing part, the plate surface of the first clamping part is parallel to the end face of the intermediate gear, and the plate surface of the second clamping part is parallel to the pushing inclined surface.

[0015] According to some embodiments of the utility model, the clutch mechanism also includes a reset spring, which is sleeved on the rotating shaft, and the two ends of the reset spring respectively abut against the inner wall of the casing and the intermediate gear, and the reset spring is used to push the intermediate gear toward the driving gear.

[0016] An electric stapler according to the utility model comprises:

[0017] chassis;

[0018] A driving motor is installed in the casing;

[0019] A driving gear connected to an output end of the driving motor;

[0020] A rotating shaft is installed in the housing;

[0021] An intermediate gear, rotatably connected to the rotating shaft, the intermediate gear meshing with the driving gear;

[0022] A driving rack meshing with the intermediate gear, the driving rack being used to move back and forth to drive the electric stapler to work;

[0023] The clutch mechanism, the clamping member is installed in the housing, and one end of the pushing member extends out of the housing.

[0024] A stapler according to an embodiment of the utility model has at least the following beneficial effects:

[0025] In the normal state, the clamping member clamps the intermediate gear, the clamping member abuts against one end of the pushing member, the intermediate gear is meshed with the driving gear and the driving rack, and the electric stapler works normally. When the electric stapler fails, the pushing member can be operated to extend out of the casing, drive the pushing member to move, drive the clamping member to move, so that the clamping member abuts against the other end of the pushing member, and the clamping member drives the intermediate gear to stagger with the driving gear, so that the driving mechanism and the driving rack are disengaged, reducing the electric stapler from causing further harm to the patient during surgery, with a simple structure and low cost.

[0026] According to some embodiments of the utility model, the housing is provided with a plurality of sliding holes, the length direction of the sliding holes is consistent with the length direction of the driving rack, the pushing member is protrudingly provided with a plurality of sliding blocks, and the plurality of sliding blocks are slidably connected in the plurality of sliding holes;

[0027] The pushing member further comprises a pushing rod, the pushing rod is connected to one end of the plurality of sliding blocks exposed from the housing, and a pushing protrusion is arranged at one end of the pushing rod away from the plurality of sliding blocks.

[0028] Additional aspects and advantages of the present invention will be partially presented in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 It is a structural schematic diagram of the clutch mechanism of an embodiment of the utility model;

[0031] Figure 2It is a structural schematic diagram of a clamping member of a clutch mechanism according to an embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of a pusher of a clutch mechanism according to an embodiment of the utility model;

[0033] Figure 4 It is a schematic structural diagram of an electric stapler according to an embodiment of the utility model.

[0034] Figure Number:

[0035] 100, clamping member; 110, clamping plate; 111, sleeve hole; 112, first clamping part; 113, second clamping part; 120, connecting plate;

[0036] 200, pushing member; 210, limiting hole; 220, pushing portion; 221, pushing inclined surface; 230, sliding block; 240, pushing rod; 241, pushing protrusion;

[0037] 300, housing; 310, slide hole;

[0038] 400, driving gear;

[0039] 500, rotating shaft; 510, intermediate gear; 520, return spring;

[0040] 600. Drive rack. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1 , Figure 2 and Figure 3 A clutch mechanism of an embodiment of the utility model, the electric stapler includes a housing 300, a driving motor, a driving gear 400, a rotating shaft 500, an intermediate gear 510 and a driving rack 600, the driving motor is installed in the housing 300, the driving gear 400 is connected to the output end of the driving motor, the intermediate gear 510 is rotatably connected to the rotating shaft 500, the intermediate gear 510 is meshed with the driving gear 400 and the driving rack 600, and the driving rack 600 is used to move back and forth to drive the electric stapler to work.

[0045] The clutch mechanism includes a clamping member 100 and a pushing member 200. The clamping member 100 clamps the intermediate gear 510, and the pushing member 200 abuts against the clamping member 100. The pushing member 200 is used to drive the intermediate gear 510 to move along the axial direction of the rotating shaft 500 through the clamping member 100. The pushing member 200 is slidably connected to the housing 300 along the length direction of the driving rack 600. One end of the pushing member 200 extends out of the housing 300. The length direction of the pushing member 200 is inclined to the length direction of the driving rack 600, and the length direction of the driving rack 600 is perpendicular to the axial direction of the rotating shaft 500. When the clamping member 100 abuts against one end of the pushing member 200, the intermediate gear 510 meshes with the driving gear 400. When the clamping member 100 abuts against the other end of the pushing member 200, the intermediate gear 510 is staggered from the driving gear 400.

[0046] In a normal state, the clamping member 100 clamps the intermediate gear 510, the clamping member 100 abuts against one end of the pushing member 200, the intermediate gear 510 is meshed with the driving gear 400 and the driving rack 600, and the electric stapler works normally. When the electric stapler fails, the pushing member 200 can be operated to extend out of the housing 300, drive the pushing member 200 to move, drive the clamping member 100 to move, so that the clamping member 100 abuts against the other end of the pushing member 200, and the clamping member 100 drives the intermediate gear 510 to stagger with the driving gear 400, so that the driving mechanism and the driving rack 600 are disengaged, thereby reducing the electric stapler from causing further harm to the patient during surgery, and the structure is simple and the cost is low.

[0047] In some embodiments, see Figure 1 and Figure 2 The clamping member 100 includes a connecting plate 120 and two clamping plates 110. The two clamping plates 110 are connected to both ends of the connecting plate 120. The two clamping plates 110 are respectively located on both sides of the middle gear 510, and the pusher 200 abuts against the clamping plates 110. The clamping member 100 is arranged in a U shape. The two clamping plates 110 can clamp the middle gear 510 and drive the middle gear 510 to move up and down, so that the middle gear 510 can mesh with or stagger with the driving gear 400.

[0048] In some embodiments, see Figure 1 and Figure 2 The clamping plate 110 is provided with a sleeve hole 111, and the rotating shaft 500 is passed through the sleeve hole 111. The rotating shaft 500 is passed through the sleeve hole 111, so that the rotating shaft 500 can limit the clamping plate 110, ensuring that the intermediate gear 510 is always located between the two clamping plates 110.

[0049] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The pusher 200 is provided with a limit hole 210, and the connecting plate 120 is slidably connected in the limit hole 210. The limit hole 210 is used to limit the rotation of the clamping member 100. The inner wall of the limit hole 210 can limit the connection plate 120 from rotating around the rotating shaft 500, avoiding interference between the clamping member 100 and other components, and ensuring that the pusher 200 can smoothly push the clamping member 100 to move axially along the rotating shaft 500.

[0050] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The pusher 200 includes a pusher portion 220, which extends between the two clamping plates 110. The two clamping plates 110 are located on both sides of the pusher portion 220. The two clamping plates 110 clamp the pusher portion 220, and the connecting plate 120 is inserted into the limiting hole 210. The clamping member 100 and the pusher 200 limit each other, so that the clutch mechanism has a compact structure and stable operation.

[0051] In some embodiments, see Figure 1 , Figure 2 and Figure 3 Two push inclined surfaces 221 are disposed on the upper and lower sides of the push portion 220 . The push inclined surfaces 221 are inclined to the axial direction of the rotating shaft 500 . The two push inclined surfaces 221 abut against the two clamping plates 110 respectively.

[0052] In some embodiments, see Figure 1 , Figure 2 and Figure 3The clamping plate 110 includes a first clamping portion 112 and a second clamping portion 113. The two first clamping portions 112 clamp the intermediate gear 510, and the two second clamping portions 113 clamp the pushing portion 220. The plate surface of the first clamping portion 112 is parallel to the end surface of the intermediate gear 510, and the plate surface of the second clamping portion 113 is parallel to the pushing inclined surface 221. The clamping member 100 is integrally formed, and the two clamping plates 110 are formed by bending the two ends of the connecting plate 120. The first clamping portion 112 and the second clamping portion 113 are twisted relative to each other, so that the second clamping portion 113 can fit on the pushing inclined surface 221, ensuring that the pushing member 200 can smoothly push the clamping member 100 to move along the axial direction of the rotating shaft 500.

[0053] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The clutch mechanism further includes a return spring 520, which is sleeved on the rotating shaft 500, and the two ends of the return spring 520 respectively abut against the inner wall of the housing 300 and the intermediate gear 510, and the return spring 520 is used to push the intermediate gear 510 toward the driving gear 400, and the return spring 520 abuts against the clamping plate 110. By providing the return spring 520, it is ensured that the intermediate gear 510 can always mesh with the driving gear 400 under normal conditions.

[0054] See also Figure 1 , Figure 3 and Figure 4 According to the utility model, an electric stapler includes a housing 300, a driving motor, a driving gear 400 and a clutch mechanism. The driving motor is installed in the housing 300, and the driving gear 400 is connected to the output end of the driving motor. The rotating shaft 500 is installed in the housing 300, and the intermediate gear 510 is rotatably connected to the rotating shaft 500, and the intermediate gear 510 is meshed with the driving gear 400. The driving rack 600 is meshed with the intermediate gear 510, and the driving rack 600 is used to move back and forth to drive the electric stapler to work. The clutch mechanism clamping member 100 is installed in the housing 300, and one end of the pushing member 200 extends out of the housing 300.

[0055] In a normal state, the clamping member 100 clamps the intermediate gear 510, the clamping member 100 abuts against one end of the pushing member 200, the intermediate gear 510 is meshed with the driving gear 400 and the driving rack 600, and the electric stapler works normally. When the electric stapler fails, the pushing member 200 can be operated to extend out of the housing 300, drive the pushing member 200 to move, drive the clamping member 100 to move, so that the clamping member 100 abuts against the other end of the pushing member 200, and the clamping member 100 drives the intermediate gear 510 to stagger with the driving gear 400, so that the driving mechanism and the driving rack 600 are disengaged, thereby reducing the electric stapler from causing further harm to the patient during surgery, and the structure is simple and the cost is low.

[0056] In some embodiments, see Figure 1 , Figure 3 and Figure 4 , a plurality of sliding holes 310 are provided on the housing 300, and the length direction of the sliding holes 310 is consistent with the length direction of the driving rack 600. A plurality of sliders 230 are protrudingly provided on the pushing member 200, and the plurality of sliders 230 are slidably connected in the plurality of sliding holes 310. The plurality of sliders 230 and the sliding holes 310 are matched and connected, which can limit the rotation of the driving member and ensure that the pushing member 200 can move along the length direction of the driving rack 600. The pushing member 200 also includes a pushing rod 240, which is connected to one end of the plurality of sliders 230 exposed from the housing 300, and a pushing protrusion 241 is provided on the end of the pushing rod 240 away from the plurality of sliders 230. The pushing rod 240 is connected to the plurality of sliders 230, and a pushing protrusion 241 is provided on the pushing rod 240 to facilitate manual operation.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clutch mechanism, an electric stapler comprises a housing, a driving motor, a driving gear, a rotating shaft, an intermediate gear and a driving rack, wherein the driving motor is installed in the housing, the driving gear is connected to the output end of the driving motor, the intermediate gear is rotatably connected to the rotating shaft, the intermediate gear is meshed with the driving gear and the driving rack, and the driving rack is used to move back and forth to drive the electric stapler to work, characterized in that: include: A clamping member, wherein the clamping member clamps the intermediate gear; A pushing member, the pushing member abuts against the clamping member, the pushing member is slidably connected to the casing along the length direction of the driving rack, one end of the pushing member extends out of the casing, the length direction of the pushing member is inclined to the length direction of the driving rack, the pushing member is used to drive the intermediate gear to move along the axial direction of the rotating shaft through the clamping member, when the clamping member abuts against one end of the pushing member, the intermediate gear is meshed with the driving gear, when the clamping member abuts against the other end of the pushing member, the intermediate gear is staggered with the driving gear, and the length direction of the driving rack is perpendicular to the axial direction of the rotating shaft.

2. A clutch mechanism according to claim 1, characterized in that: The clamping member comprises a connecting plate and two clamping plates, the two clamping plates are connected to two ends of the connecting plate, the two clamping plates are respectively located on two sides of the intermediate gear, and the pushing member abuts against the clamping plates.

3. A clutch mechanism according to claim 2, characterized in that: The clamping plate is provided with a sleeve hole, and the rotating shaft is passed through the sleeve hole.

4. A clutch mechanism according to claim 2, characterized in that: The pushing member is provided with a limiting hole, the connecting plate is slidably connected in the limiting hole, and the limiting hole is used to limit the rotation of the clamping member.

5. A clutch mechanism according to claim 4, characterized in that: The pushing member comprises a pushing portion, and the pushing portion extends between the two clamping plates, and the two clamping plates are located at two sides of the pushing portion.

6. A clutch mechanism according to claim 5, characterized in that: Two push inclined surfaces are arranged on the upper and lower sides of the push portion, and the push inclined surfaces are inclined to the axial direction of the rotating shaft, and the two push inclined surfaces abut against the two clamping plates respectively.

7. A clutch mechanism according to claim 6, characterized in that: The clamping plate includes a first clamping portion and a second clamping portion, the two first clamping portions clamp the intermediate gear, the two second clamping portions clamp the pushing portion, the plate surface of the first clamping portion is parallel to the end surface of the intermediate gear, and the plate surface of the second clamping portion is parallel to the pushing inclined surface.

8. The clutch mechanism according to claim 1, characterized in that: It also includes a return spring, which is sleeved on the rotating shaft, and two ends of the return spring respectively abut against the inner wall of the casing and the intermediate gear, and the return spring is used to push the intermediate gear toward the driving gear.

9. An electric stapler, characterized in that: include: chassis; A driving motor is installed in the casing; A driving gear connected to an output end of the driving motor; A rotating shaft is installed in the housing; An intermediate gear, rotatably connected to the rotating shaft, the intermediate gear meshing with the driving gear; A driving rack meshing with the intermediate gear, the driving rack being used to move back and forth to drive the electric stapler to work; According to the clutch mechanism as described in any one of claims 1-8, the clamping member is installed in the housing, and one end of the pushing member extends out of the housing.

10. The electric stapler according to claim 9, characterized in that: The housing is provided with a plurality of sliding holes, the length direction of the sliding holes is consistent with the length direction of the driving rack, the pushing member is protrudingly provided with a plurality of sliding blocks, and the plurality of sliding blocks are slidably connected in the plurality of sliding holes; The pushing member further comprises a pushing rod, the pushing rod is connected to one end of the plurality of sliding blocks exposed from the housing, and a pushing protrusion is arranged at one end of the pushing rod away from the plurality of sliding blocks.

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