Key limiting device and surgical instrument

Abstract

The button limiting device comprises a limiting piece, a connecting rod and a rotating portion, the limiting piece is arranged on a main body of the surgical instrument in a sliding mode, one end of the limiting piece is connected with the connecting rod, the other end of the limiting piece is a limiting end, and when the limiting end of the limiting piece is located on a moving path of a button, the button is located at a locking position. When the limiting end of the limiting piece is separated from the moving path of the key, the key is in a release position, the connecting rod is pivotally connected with the main body, two ends of the connecting rod are respectively connected with the limiting piece and the rotating part, the rotating part drives the connecting rod to rotate when rotating, the connecting rod drives the limiting piece to move, and the limiting end of the limiting piece enters or is separated from the moving path of the key. According to the button limiting device and the surgical instrument, a user can control the button conveniently, the button is prevented from being touched by mistake, the button limiting device is simple in structure, parts are reduced, and occupied space in the main body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of key limiting device and surgical instrument. BACKGROUND

[0002] At present, when surgical operation is carried out, it needs to be assisted by surgical instrument. The flush suction ablation electrode device integrates ablation, hemostasis, flushing and suction functions, and is a kind of efficient and safe surgical tool. The flush suction ablation electrode device is provided with a pressure increasing valve, and the pressure is manually controlled by a key, so that the flushing operation is more convenient. However, since the pressure increasing valve has fluid, when the pressure increasing valve is closed, the pressure in the pressure increasing valve increases when the user presses the key, which can easily cause damage to the pressure increasing valve due to excessive pressure. SUMMARY

[0003] The utility model discloses a kind of key limiting device and surgical instrument, which can limit key, avoid damage to pressure increasing valve caused by accidental touch.

[0004] The specific technical scheme is as follows: a kind of key limiting device, including limiting piece, connecting rod and rotating part, the limiting piece is slidably arranged on the main body of surgical instrument, limiting piece one end is connected with connecting rod, the other end is limiting end, when the limiting end of limiting piece is located in the movement path of key, key is in locked position, when the limiting end of limiting piece is separated from the movement path of key, key is in release position, connecting rod is pivotally connected with the main body, connecting rod both ends are connected with limiting piece and rotating part respectively, rotating part rotates and drives connecting rod to rotate, connecting rod drives limiting piece to move, the limiting end of limiting piece enters or separates from the movement path of key.

[0005] In some embodiments, the limiting piece is arranged in the sliding groove of the main body.

[0006] In some embodiments, the connecting rod is provided with a first connecting portion and a second connecting portion at both ends respectively, the first connecting portion is inserted into the limiting slot of the limiting piece, and the second connecting portion is inserted into the matching groove on the side of the rotating part.

[0007] In some embodiments, the connecting rod includes a through hole, and a first arm portion and a second arm portion arranged on both sides of the through hole, the first connecting portion is arranged on the first arm portion, and the second connecting portion is arranged on the second arm portion.

[0008] In some embodiments, the side wall of the sliding groove is provided with a notch, and the first arm portion passes through the notch.

[0009] In some embodiments, the thickness of the limiting end is greater than the thickness of the limiting piece.

[0010] In some embodiments, the limiting piece is L-shaped, and the rotating part is cylindrical.

[0011] The surgical instrument comprises a main body and a button, and the button limiting device is arranged in the main body.

[0012] In some embodiments, an operating lever is arranged outside the main body and connected with the rotating part.

[0013] In some embodiments, the main body comprises a handle and a body part, the button is arranged on the handle, the button limiting device is arranged at the connection position of the handle and the body part, and the limiting member is arranged along the length direction of the handle.

[0014] The technical effect of the utility model: the button limiting device and the surgical instrument of the utility model embodiment can facilitate user control of the button, avoid accidental touch of the button, and the scheme has a relatively simple structure, reduces parts, and reduces the space occupation in the main body. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is a schematic view of a button limiting device of the utility model embodiment.

[0017] Figure 2 It is another schematic view of a button limiting device of the utility model embodiment.

[0018] Figure 3 It is a schematic view of a connecting rod of the utility model embodiment.

[0019] Figure 4 It is a schematic view of a limiting member of the utility model embodiment.

[0020] Figure 5 It is a schematic view of a notch of the utility model embodiment.

[0021] Figure 6 It is a schematic view of a surgical instrument of the utility model embodiment. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and not used to limit the utility model.

[0026] As Figures 1 to 6 The utility model discloses a key limiting device, including limiting piece 1, connecting rod 2 and rotating part 3, limiting piece 1 is arranged on the main body 10 of surgical instrument and slides, limiting piece 1 one end is connected with connecting rod 2, and the other end is limiting end 11. When the limiting end 11 of limiting piece is located in the movement path of button 20, button 20 is in the locking position, and when the limiting end 11 of limiting piece is separated from the movement path of button, button 20 is in the release position. Connecting rod 2 is pivotally connected with the main body 10, and the two ends of connecting rod 2 are connected with limiting piece 1 and rotating part 3 respectively, rotating part 3 rotates and drives connecting rod 2 to rotate, connecting rod 2 drives limiting piece 1 to move, and the limiting end 11 of limiting piece 1 enters or separates from the movement path of button. In the above technical scheme, the slippage of limiting piece 1 is driven by rotating part 3, which can lock or release button 20, when the button is locked, the user presses button 20, and the button cannot move, thereby preventing the user from accidentally touching the button. Through the above technical scheme, the user can control the button conveniently, avoid the button from being accidentally touched, and the scheme has simple structure, reduces parts, and reduces the space occupation in the main body.

[0027] In the embodiment, the limiting piece 1 is arranged in the sliding groove 101 of the main body 10, so that the limiting piece 1 can be guided by the sliding groove, and the sliding groove 101 is a straight groove. The connecting rod 2 is provided with a first connecting part 21 and a second connecting part 22 at two ends respectively, the first connecting part 21 is inserted into the limiting groove 12 of the limiting piece 1, and the second connecting part 22 is inserted into the matching groove 31 on the side of the rotating part 3. When the rotating part 3 rotates, the second connecting part 22 is pushed through the matching groove 31, so that the connecting rod 2 rotates, the first connecting part 21 drives the limiting piece 1 to slide, and thus the rotary motion is converted into linear motion. The connecting rod 2 comprises a through hole 23, and a first arm part 24 and a second arm part 25 arranged on both sides of the through hole 23, the first connecting part 21 is arranged on the first arm part 24, and the second connecting part 22 is arranged on the second arm part 25. The through hole 23 is connected with the main body pivot, the first and second connecting parts are linked through the two arm parts, and the first and second connecting parts are both cylindrical. The side wall of the sliding groove 101 is provided with a notch 102, the first arm part 24 passes through the notch 102, so that the first connecting part can extend into the sliding groove and does not affect the swing of the first arm part 24. The thickness of the limiting end 11 is greater than that of the limiting piece 1, the limiting end 11 is thickened, the contact area with the key can be increased, and the limiting is more stable. The limiting piece 1 is L-shaped, which is convenient for processing, and the rotating part 3 is cylindrical, so that the rotating part 3 is convenient to rotate.

[0028] A surgical instrument comprises a main body 10 and a key 20, the main body 10 is provided with the key limiting device, the surgical instrument in the embodiment is a shock absorption and ablation electrode device, the key 20 is used for controlling pressurized flushing, when the key is unlocked, a user presses the key 20, and the pressure of flushing fluid in the main body 10 is enhanced. The main body 10 is provided with an operating rod 30 outside, the operating rod 30 is connected with the rotating part 3, the user drives the rotating part 3 to rotate by rotating the operating rod 30, and thus the operation is facilitated. The main body 10 comprises a handle 103 and a body part 104, the key 20 is arranged on the handle 103, the key limiting device is arranged at the connecting position of the handle 103 and the body part 104, and the limiting piece 1 is arranged along the length direction of the handle 103. When the user uses, the handle 103 is held, the operating rod 30 can be operated by the thumb, the limiting piece 1 is located above the key 20 and moves along the handle 103, and the limiting piece 1 is conveniently inserted into the movement path of the key 20.

[0029] The key limiting device and the surgical instrument in the embodiment can facilitate the user to control the key, avoid the key from being touched by mistake, the structure of the scheme is relatively simple, the number of parts is reduced, and the space occupation in the main body is reduced.

[0030] The key limiting device and the surgical instrument are described above, but the utility model is not limited to the specific implementation manner, various modifications and changes can be made without departing from the scope of the claims. The utility model comprises various modifications and changes within the scope of the claims.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A key stop device, comprising: The device comprises a limiting member, a connecting rod and a rotating part. The limiting member is slidably arranged on the main body of the surgical instrument. One end of the limiting member is connected with the connecting rod, and the other end is a limiting end. When the limiting end of the limiting member is in the moving path of the button, the button is in the locked position. When the limiting end of the limiting member is out of the moving path of the button, the button is in the released position. The connecting rod is pivotally connected with the main body. The two ends of the connecting rod are respectively connected with the limiting member and the rotating part. When the rotating part rotates, it drives the connecting rod to rotate, and the connecting rod drives the limiting member to move. The limiting end of the limiting member enters or leaves the moving path of the button.

2. The key stop device of claim 1, wherein The limiting member is arranged in the sliding groove of the main body.

3. The key stop device of claim 2, wherein, The two ends of the connecting rod are respectively provided with a first connecting part and a second connecting part. The first connecting part is inserted into the limiting groove of the limiting member, and the second connecting part is inserted into the matching groove on the side of the rotating part.

4. The key stop device of claim 3, wherein The connecting rod comprises a through hole, and a first arm part and a second arm part arranged on both sides of the through hole. The first connecting part is arranged on the first arm part, and the second connecting part is arranged on the second arm part.

5. The key stop device of claim 4, wherein, The side wall of the sliding groove is provided with a notch, and the first arm part passes through the notch.

6. The key stop device of claim 1, wherein The thickness of the limiting end is greater than the thickness of the limiting member.

7. The key stop device of claim 6, wherein The limiting member is L-shaped, and the rotating part is cylindrical.

8. A surgical instrument comprising a body and a button, characterized in that The main body is provided with the button limiting device according to any one of claims 1 to 7.

9. The surgical instrument of claim 8, wherein, The main body is externally provided with an operating rod, and the operating rod is connected with the rotating part.

10. The surgical instrument of claim 9, wherein, The main body comprises a handle and a body part. The button is arranged on the handle, the button limiting device is arranged at the connecting position of the handle and the body part, and the limiting member is arranged along the length direction of the handle.

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