Electric stapler capable of preventing misfiring

Abstract

The utility model discloses an electric stapler that prevents misfiring, which belongs to the field of medical devices, and includes a casing, a firing handle and a locking mechanism. A fixed handle is provided on the casing, and one end of the firing handle extends into the casing and is hinged to the casing. When the firing handle is in a closed state, the other end of the firing handle is close to the fixed handle, and the firing handle controls the operation of the electric stapler. The locking mechanism includes a locking rod, one end of which extends into the casing, and the locking rod can be operated to switch to an unlocked state and a locked state. When the locking rod is in the unlocked state, the firing handle is rotatably connected to the casing; when the locking rod is in the locked state, the locking rod extends into the casing part and abuts against one side of the firing handle, and the locking rod limits the rotation of the firing handle. The electric stapler that prevents misfiring of the utility model can prevent the firing handle from being accidentally triggered, can improve the safety performance of the electric stapler, and can reduce secondary damage to patients during surgery.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an electric stapler capable of preventing misfiring. 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 in tissue suturing and cutting in surgical operations. According to the different power transmission methods, the stapler has undergone many design improvements since its birth, from the original medical "stapler" to the stapler, and after going through the two technical stages of the first generation of open staplers and the second generation of laparoscopic staplers, it has entered the third generation of electric laparoscopic staplers. Compared with manual staplers, electric laparoscopic staplers have better hemostatic effects, so they have improved in clinical value and economic value. The firing method of the electric stapler in the prior art generally includes a button and a firing handle. Pressing the button or the firing handle drives the stapler to work. The button or the firing handle is easy to be accidentally triggered prematurely, affecting the operation. 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 provides an electric stapler that prevents misfiring, which solves the problem that the firing button or firing handle of the electric stapler in the prior art is easily mistried and prematurely fired, affecting the operation.

[0004] According to an embodiment of the utility model, an electric stapler for preventing misfiring includes:

[0005] A casing, wherein a fixed handle is provided on the casing;

[0006] A firing handle, one end of which extends into the housing and is hinged to the housing, and when the firing handle is in an extended state, the other end of the firing handle is away from the fixed handle; when the firing handle is in a closed state, the other end of the firing handle is close to the fixed handle, and the firing handle controls the operation of the electric stapler;

[0007] The locking mechanism includes a locking rod, one end of which extends into the casing. The locking rod can be operated to switch between an unlocked state and a locked state. When the locking rod is in the unlocked state, the firing handle is rotatably connected to the casing; when the locking rod is in the locked state, the locking rod extends into the casing part and abuts against one side of the firing handle, and the locking rod restricts the rotation of the firing handle.

[0008] An electric stapler for preventing misfiring according to an embodiment of the utility model has at least the following beneficial effects:

[0009] When the electric stapler needs to be used, the locking lever is operated to be in the unlocked state, and the firing handle is pressed so that the end of the firing handle is close to the fixed handle to complete the firing operation. The locking lever is operated to be in the locked state, and the locking lever restricts the rotation of the firing handle, which can prevent the firing handle from being accidentally triggered, thereby improving the safety performance of the electric stapler, reducing waste, and reducing secondary injuries to patients during surgery.

[0010] According to some embodiments of the utility model, the locking mechanism also includes a locking seat, which is installed on the casing, and a locking hole is provided on the locking seat, and a guide groove is provided on the inner wall of the locking hole. A guide rod is provided on the locking rod along the radial protrusion of the locking rod, and the guide rod extends into the guide groove, and the guide groove is used to guide the guide rod to move from one end of the guide groove to the other end so that the locking rod can switch between an unlocked state and a locked state.

[0011] According to some embodiments of the utility model, the locking mechanism also includes a spring, which is installed in the locking hole. The locking rod includes an operating part and a locking part that are connected. The diameter of the operating part is larger than the locking part. The locking part extends into the interior of the casing. The spring is sleeved on the locking part, and the spring is used to push the locking rod out of the casing.

[0012] According to some embodiments of the utility model, the guide groove includes a first groove section and a second groove section that are connected to each other, one end of the second groove section is connected to one end of the first groove section, the first groove section is arranged along the axial direction of the locking rod, and the second groove section is arranged along the circumferential direction of the locking rod, when the guide rod is located in the second groove section, the locking rod is in a locked state; when the guide rod is located in the first groove section away from one end of the second groove section, the locking rod is in an unlocked state.

[0013] According to some embodiments of the utility model, the guide groove also includes a third groove section, the third groove section is connected to the end of the second groove section away from the first groove section, the third groove section is arranged along the length direction of the locking rod, the length of the third groove section is smaller than the first groove section, and when the guide rod is located in the third groove section, the locking rod is in a locked state.

[0014] According to some embodiments of the utility model, the locking seat includes a fixed block and a cover body, the fixed block is installed on the casing, the cover body is detachably connected to the fixed block, the first groove section is located in the cover body, the bottom wall and a side wall of the second groove section are located on the cover body, and the other side wall of the second groove section is located on the fixed block.

[0015] According to some embodiments of the utility model, a threaded hole connected to the locking hole is provided on the cover body, an external thread is provided on the surface of the fixing block, the fixing block is threadedly connected to the cover body, and the difference between the radius of the threaded hole and the locking hole is greater than the depth of the guide groove.

[0016] According to some embodiments of the present invention, a plurality of anti-slip grooves are arranged along the circumference of the locking rod at one end of the locking rod exposed from the housing.

[0017] According to some embodiments of the present utility model, a first slot is provided on the firing handle, and when the firing handle is in an unfolded state and the locking rod is in a locked state, the locking rod extends into the first slot.

[0018] According to some embodiments of the present utility model, a second slot is provided on the firing handle, and when the firing handle is in a closed state and the locking rod is in a locked state, the locking rod extends into the second slot.

[0019] Additional aspects and advantages of the present invention will be partially presented in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 The schematic diagram of the housing, firing handle and locking mechanism of the electric stapler for preventing misfiring according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The schematic diagram of the housing, firing handle and locking mechanism of the electric stapler for preventing misfiring according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a structural schematic diagram of the locking mechanism and housing of the electric stapler for preventing misfiring according to an embodiment of the utility model;

[0024] Figure 4 It is a schematic structural diagram of a locking rod of an electric stapler for preventing misfiring according to an embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of a cover body of an electric stapler for preventing misfiring according to an embodiment of the utility model;

[0026] Figure 6 It is a schematic structural diagram of a firing handle of an electric stapler that prevents misfiring according to an embodiment of the utility model.

[0027] Figure Number:

[0028] 100, housing; 110, fixed handle;

[0029] 200, firing handle; 210, first card slot; 220, second card slot;

[0030] 300, locking mechanism; 310, locking rod; 311, guide rod; 312, operating part; 313, locking part; 314, anti-slip groove; 320, locking seat; 321, locking hole; 322, guide groove; 3221, first groove section; 3222, second groove section; 3223, third groove section; 323, fixing block; 324, cover body; 3241, threaded hole; 330, spring. DETAILED DESCRIPTION

[0031] 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.

[0032] 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 the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] 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.

[0034] See also Figure 1 , Figure 2 and Figure 3The electric stapler for preventing misfire of the embodiment of the utility model comprises a housing 100, a firing handle 200 and a locking mechanism 300. The housing 100 is provided with a fixed handle 110. One end of the firing handle 200 extends into the housing 100 and is hinged with the housing 100. When the firing handle 200 is in an unfolded state, the other end of the firing handle 200 is away from the fixed handle 110. When the firing handle 200 is in a closed state, the other end of the firing handle 200 is close to the fixed handle 110, and the firing handle 200 controls the operation of the electric stapler. The locking mechanism 300 includes a locking rod 310, one end of which extends into the casing 100. The locking rod 310 can be operated to switch between an unlocked state and a locked state. When the locking rod 310 is in the unlocked state, the firing handle 200 is rotatably connected to the casing 100; when the locking rod 310 is in the locked state, the locking rod 310 extends into the casing 100 and partially abuts against one side of the firing handle 200, and the locking rod 310 limits the rotation of the firing handle 200.

[0035] When the electric stapler needs to be used, the locking rod 310 is operated to be in an unlocked state, and the firing handle 200 is pressed so that the end of the firing handle 200 is close to the fixed handle 110 to complete the firing operation. The locking rod 310 is operated to put the locking rod 310 in a locked state, and the locking rod 310 limits the rotation of the firing handle 200, which can prevent the firing handle 200 from being accidentally triggered, thereby improving the safety performance of the electric stapler, reducing waste, and reducing secondary damage to patients during surgery.

[0036] A driving mechanism is provided in the housing 100, and the driving mechanism includes a driving button, a driving motor and a driving gear. The driving gear is connected to the driving rack through the driving gear. The driving motor drives the driving rack to move back and forth through the driving gear, and the driving rack moves back and forth to drive the stapler to work. The driving button controls the start and stop of the driving motor. When the firing handle 200 is in the closed state, the firing handle 200 presses the driving button.

[0037] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The locking mechanism 300 further includes a locking seat 320, which is mounted on the housing 100. The locking seat 320 is provided with a locking hole 321, and the inner wall of the locking hole 321 is provided with a guide groove 322. A guide rod 311 is provided on the locking rod 310 along the radial protrusion of the locking rod 310, and the guide rod 311 extends into the guide groove 322. The guide groove 322 is used to guide the guide rod 311 to move from one end of the guide groove 322 to the other end so that the locking rod 310 switches between the unlocked state and the locked state. By providing the guide groove 322, the movement trajectory of the locking rod 310 is limited, and the locking rod 310 is ensured to switch smoothly between the unlocked state and the locked state, and the locking rod 310 can also be prevented from falling off from the housing 100.

[0038] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The locking mechanism 300 further includes a spring 330, which is installed in the locking hole 321. The locking rod 310 includes an operating portion 312 and a locking portion 313 connected to each other. The diameter of the operating portion 312 is larger than that of the locking portion 313. The locking portion 313 extends into the housing 100. The spring 330 is sleeved on the locking portion 313. The spring 330 is used to push the locking rod 310 out of the housing 100. The locking rod 310 moves along the axial direction of the locking rod 310, so that the length of the locking rod 310 extending into the housing 100 changes. When the locking rod 310 extends into the housing 100 to the longest, the locking rod 310 squeezes the spring 330, the spring 330 accumulates force, and the locking rod 310 is in a locked state; when the locking rod 310 extends into the housing 100 to the shortest, the locking rod 310 is in an unlocked state, and the spring 330 can push the locking rod 310, so that the locking rod 310 remains in the unlocked state.

[0039] In some embodiments, see Figure 3 , Figure 4 and Figure 5 The guide groove 322 includes a first groove section 3221 and a second groove section 3222 which are connected to each other, and one end of the second groove section 3222 is connected to one end of the first groove section 3221. The first groove section 3221 is arranged along the axial direction of the locking rod 310, and the second groove section 3222 is arranged along the circumferential direction of the locking rod 310. When the guide rod 311 is located in the second groove section 3222, the locking rod 310 is in a locked state; when the guide rod 311 is located in the first groove section 3221 and is away from one end of the second groove section 3222, the locking rod 310 is in an unlocked state. The second slot section 3222 is connected to the end of the first slot section 3221 close to the interior of the casing 100. When the guide rod 311 is located in the second slot section 3222, the locking rod 310 extends into the interior of the casing 100 the longest, and the locking rod 310 is in a locked state; when the guide rod 311 is located in the first slot section 3221 at the end away from the second slot section 3222, the locking rod 310 extends into the interior of the casing 100 the shortest, and the locking rod 310 is in an unlocked state.

[0040] The initial position of the locking rod 310 is the locked state. The locking rod 310 is rotated so that the guide rod 311 moves from the second slot section 3222 to the intersection of the first slot section 3221 and the second slot section 3222. The spring 330 can push the locking rod 310 to move toward the outside of the housing 100. The guide rod 311 moves to the end of the first slot section 3221 away from the second slot section 3222, and the locking rod 310 is in the unlocked state. The locking rod 310 is pressed so that the guide rod 311 moves to the intersection of the first slot section 3221 and the second slot section 3222. The locking rod 310 is then rotated so that the guide rod 311 moves into the second guide slot 322, and the locking rod 310 is in the locked state.

[0041] In some embodiments, see Figure 3 , Figure 4 and Figure 5 The guide groove 322 further includes a third groove section 3223, which is connected to an end of the second groove section 3222 away from the first groove section 3221. The third groove section 3223 is arranged along the length direction of the locking rod 310. The length of the third groove section 3223 is smaller than that of the first groove section 3221. When the guide rod 311 is located in the third groove section 3223, the locking rod 310 is in a locked state. When the guide rod 311 is located in the third groove section 3223 and the second groove section 3222, the firing handle 200 can be locked. The third slot section 3223 is set to limit the rotation of the locking rod 310. The spring 330 pushes the locking rod 310 so that the guide rod 311 is maintained in the third slot section 3223. When adjusting the locking rod 310, it is necessary to press the locking rod 310 first so that the guide rod 311 moves from the third slot section 3223 to the junction of the second slot section 3222 and the third slot section 3223, and then rotate the locking rod 310 so that the guide rod 311 moves to the junction of the second slot section 3222 and the first slot section 3221. This can further improve the safety performance of the locking mechanism 300 and avoid accidental unlocking.

[0042] In some embodiments, see Figure 3 , Figure 4 and Figure 5 The locking seat 320 includes a fixing block 323 and a cover body 324. The fixing block 323 is mounted on the housing 100, and the cover body 324 is detachably connected to the fixing block 323. The first slot section 3221 is located in the cover body 324, the bottom wall and a side wall of the second slot section 3222 are located on the cover body 324, and the other side wall of the second slot section 3222 is located on the fixing block 323. The fixing block 323 and the cover body 324 are separated and arranged, which is convenient for processing and installation. The fixing block 323 is integrally formed with the housing 100. When installing, first insert the spring 330 into the fixing block 323, then pass the two ends of the locking rod 310 through the cover body 324 and the fixing block 323 respectively, and then cover the cover body 324 on the fixing block 323.

[0043] In some embodiments, see Figure 3 , Figure 4 and Figure 5 The cover body 324 is provided with a threaded hole 3241, which is connected to the locking hole 321. The difference between the radius of the threaded hole 3241 and the locking hole 321 is greater than the depth of the guide groove 322, so that the guide rod 311 can extend into the guide groove 322 along the threaded hole 3241. The surface of the fixing block 323 is provided with an external thread, and the fixing block 323 is threadedly connected to the cover body 324. The fixing block 323 is threadedly connected to the cover body 324, which is convenient for disassembly and assembly.

[0044] In some embodiments, see Figure 4 The end of the locking rod 310 exposed from the housing 100 is provided with a plurality of anti-skid grooves 314 along the circumference of the locking rod 310. The anti-skid grooves 314 are provided to facilitate the rotation of the locking rod 310.

[0045] In some embodiments, see Figure 2 and Figure 6 The firing handle 200 is provided with a first slot 210. When the firing handle 200 is in the unfolded state and the locking rod 310 is in the locked state, the locking rod 310 extends into the first slot 210. The firing handle 200 is provided with a second slot 220. When the firing handle 200 is in the closed state and the locking rod 310 is in the locked state, the locking rod 310 extends into the second slot 220. The first slot 210 and the second slot 220 can be fitted on the locking rod 310 to increase the contact area between the firing handle 200 and the locking rod 310, and ensure that the firing handle 200 is subjected to uniform force. The locking rod 310 can lock the firing handle 200 in the unfolded state or the closed state, and has good safety performance.

[0046] 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.

[0047] 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. An electric stapler for preventing misfiring, characterized in that: include: A casing, wherein a fixed handle is provided on the casing; A firing handle, one end of which extends into the housing and is hinged to the housing, and when the firing handle is in an extended state, the other end of the firing handle is away from the fixed handle; when the firing handle is in a closed state, the other end of the firing handle is close to the fixed handle, and the firing handle controls the operation of the electric stapler; The locking mechanism includes a locking rod, one end of which extends into the casing. The locking rod can be operated to switch between an unlocked state and a locked state. When the locking rod is in the unlocked state, the firing handle is rotatably connected to the casing; when the locking rod is in the locked state, the locking rod extends into the casing part and abuts against one side of the firing handle, and the locking rod restricts the rotation of the firing handle.

2. The electric stapler for preventing misfiring according to claim 1, characterized in that: The locking mechanism also includes a locking seat, which is mounted on the casing, a locking hole is provided on the locking seat, a guide groove is provided on the inner wall of the locking hole, a guide rod is provided on the locking rod along the radial protrusion of the locking rod, the guide rod extends into the guide groove, and the guide groove is used to guide the guide rod to move from one end of the guide groove to the other end so that the locking rod can switch between an unlocked state and a locked state.

3. The electric stapler for preventing misfiring according to claim 2, characterized in that: The locking mechanism also includes a spring, which is installed in the locking hole. The locking rod includes an operating part and a locking part that are connected. The diameter of the operating part is larger than the locking part. The locking part extends into the interior of the casing. The spring is sleeved on the locking part. The spring is used to push the locking rod out of the casing.

4. The electric stapler for preventing misfiring according to claim 2, characterized in that: The guide groove includes a first groove section and a second groove section that are connected to each other, one end of the second groove section is connected to one end of the first groove section, the first groove section is arranged along the axial direction of the locking rod, and the second groove section is arranged along the circumferential direction of the locking rod, when the guide rod is located in the second groove section, the locking rod is in a locked state; when the guide rod is located in the first groove section away from one end of the second groove section, the locking rod is in an unlocked state.

5. The electric stapler for preventing misfiring according to claim 4, characterized in that: The guide groove also includes a third groove section, which is connected to the end of the second groove section away from the first groove section. The third groove section is arranged along the length direction of the locking rod. The length of the third groove section is smaller than that of the first groove section. When the guide rod is located in the third groove section, the locking rod is in a locked state.

6. The electric stapler for preventing misfiring according to claim 4, characterized in that: The locking seat includes a fixed block and a cover body, the fixed block is installed on the casing, the cover body is detachably connected to the fixed block, the first groove section is located in the cover body, the bottom wall and a side wall of the second groove section are located on the cover body, and the other side wall of the second groove section is located on the fixed block.

7. The electric stapler for preventing misfiring according to claim 6, characterized in that: The cover body is provided with a threaded hole connected with the locking hole, the surface of the fixing block is provided with an external thread, the fixing block is threadedly connected with the cover body, and the difference between the radius of the threaded hole and the locking hole is greater than the depth of the guide groove.

8. The electric stapler for preventing misfiring according to claim 2, characterized in that: The end of the locking rod exposed from the housing is provided with a plurality of anti-slip grooves along the circumference of the locking rod.

9. The electric stapler for preventing misfiring according to claim 1, characterized in that: The firing handle is provided with a first slot, and when the firing handle is in an unfolded state and the locking rod is in a locked state, the locking rod extends into the first slot.

10. The electric stapler for preventing misfiring according to claim 1, characterized in that: The firing handle is provided with a second slot, and when the firing handle is in a closed state and the locking rod is in a locked state, the locking rod extends into the second slot.

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