A surgical instrument

Abstract

The utility model relates to a surgical instrument, including end effector, slender body and operating handle, operating handle includes handle body, rotatably installed on handle body and with the rotation sleeve of fixed slender body circumference, the limiting sleeve that is movably located in rotation sleeve and with rotation sleeve circumferential fixed, the elastic member that abuts between limiting sleeve and rotation sleeve, the distal end face of handle body has a plurality of lock slot arrangement around the axis line of slender body, the proximal end face of limiting sleeve has the locking portion that is compatible with lock slot, and the locking portion can be inserted lock slot and lock the circumference of rotation sleeve, through being provided with a plurality of lock slot at the distal end face of handle body, and with the elastic force of elastic member, can make the locking portion of limiting sleeve and lock slot close cooperation, thereby realize end effector in a plurality of position's stable stop, can accurately lock end effector at the set angle, provide great convenience for operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a surgical instrument. Background Technology

[0002] In clinical applications, common laparoscopic anastomotic devices require rotating the instrument's actuator end to obtain the optimal surgical angle. Therefore, the design must ensure that the actuator end is rotatable.

[0003] Currently, commercially available laparoscopic staplers typically employ a design where a rotating sleeve secures the instrument handle to the outer shell. This means the rotating sleeve has ribs forming an inner annular groove, while the connection between the handle and the rotating sleeve has an outer annular groove. These two grooves engage to form a rotary joint. The rotating sleeve and the instrument actuator are dynamically connected; by moving the rotating sleeve with a finger, the instrument actuator rotates, achieving 360° rotation. However, this rotational design has the following drawbacks:

[0004] (1) During clinical use, when the stapler enters the human cavity, the stapler may rotate during tissue manipulation or blunt dissection, which is not conducive to surgical operation. During tissue clamping, the angle of the stapler needs to be adjusted. After the rotating sleeve is moved to the required angle, the rotating sleeve will rotate due to tissue traction, which will cause the angle of the stapler to change. The rotating sleeve can only be pressed to maintain the required angle. Sometimes it is even necessary to adjust the angle of the handle (i.e., change the gripping posture) to maintain the required angle, which is not conducive to surgical operation.

[0005] (2) High precision is required for the dimensional fit between the rotating sleeve and the handle housing. This places high demands on the product's manufacturing process. If the dimensional fit is not precise enough, the rotation may be too loose or too tight, affecting the user experience. Utility Model Content

[0006] The purpose of this invention is to provide a surgical instrument whose end effector can rotate 360° and stop at any rotation angle.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a surgical instrument, including an end effector, an elongated body, and an operating handle. The two ends of the elongated body are respectively connected to the end effector and the operating handle. The operating handle includes:

[0009] The handle body has a plurality of locking grooves arranged around the axis of the elongated body on its distal end surface.

[0010] A rotating sleeve is rotatably mounted on the handle body about its axis, the rotating sleeve being coaxial with the elongated body and both being circumferentially fixed;

[0011] A limiting sleeve, movably disposed within the rotating sleeve, the limiting sleeve and the rotating sleeve being coaxial and circumferentially fixed, the proximal end face of the limiting sleeve having a locking portion adapted to the locking groove, the locking portion being insertable into the locking groove to circumferentially lock the rotating sleeve; and,

[0012] An elastic element abuts between the limiting sleeve and the rotating sleeve, causing the limiting sleeve to always have a tendency to move the locking part toward the direction of insertion into the locking groove.

[0013] Preferably, the locking part has a plurality of locking parts arranged around the axis of the limiting sleeve, and the plurality of locking parts are provided in a one-to-one correspondence with the locking groove.

[0014] More preferably, the plurality of locking grooves are connected end to end, and the plurality of locking parts are connected end to end.

[0015] Preferably, the two sides of the locking groove are guide slopes that extend outward from near to far.

[0016] More preferably, the lock slots are symmetrically arranged.

[0017] In some embodiments, the locking groove is V-shaped.

[0018] Preferably, the limiting sleeve is fitted onto the elongated body, the limiting sleeve has a groove extending along its axial direction, and the inner side of the rotating sleeve has a connecting post extending towards its axis, the connecting post passing through the groove and connecting to the elongated body.

[0019] More preferably, the slide groove has two sections disposed on opposite sides of the limiting sleeve, and the connecting post is disposed correspondingly to the slide groove.

[0020] Preferably, the elastic element is a spring in a compressed state.

[0021] Preferably, the elastic element is sleeved on the elongated body and located at the distal end of the limiting sleeve.

[0022] Preferably, the rotating sleeve consists of a first part and a second part that interlock.

[0023] Preferably, the distal end of the handle body has an annular groove, and the proximal end of the rotating sleeve has an annular protrusion that matches the annular groove, the annular protrusion being embedded in the annular groove.

[0024] Preferably, the surgical instrument is a laparoscopic anastomosis device.

[0025] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0026] This invention enables 360° omnidirectional rotation of the end effector by driving the rotating sleeve to rotate. Multiple locking grooves are provided on the distal end face of the handle body. With the elastic force of the elastic element, the locking part of the limiting sleeve can be inserted into and tightly fitted into the locking grooves, thereby achieving stable parking of the end effector in multiple positions. This allows for precise locking of the end effector at a set angle, greatly facilitating surgical operations and effectively improving surgical flexibility and precision. Furthermore, the rotating sleeve and handle body in this invention do not require high precision in their fit, avoiding the issues of excessively loose or tight rotation seen in existing technologies. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the laparoscopic anastomosis device provided in Example 1;

[0028] Figure 2 A schematic diagram of the laparoscopic stapler provided in Example 1 in a stationary state;

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0030] Figure 4 A schematic diagram of the laparoscopic anastomosis device provided in Example 1 in a rotating state;

[0031] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle;

[0032] Figure 6 Another schematic diagram of the laparoscopic anastomosis device provided in Example 1 in a rotating state;

[0033] Figure 7 for Figure 6 An enlarged schematic diagram of section C;

[0034] Figure 8 A cross-sectional view of the distal end of the handle of the laparoscopic anastomosis device provided in Example 1;

[0035] Figure 9 This is a schematic diagram of the handle body provided in Embodiment 1;

[0036] Figure 10 A schematic diagram of the limiting sleeve provided in Example 1;

[0037] Figure 11 An exploded view of the rotating sleeve provided in Example 1;

[0038] Among them, 1. Handle body; 11. Locking groove; 111. Guide slope; 12. Annular groove;

[0039] 2. Rotating sleeve; 21. First part; 22. Second part; 23. Connecting post; 24. Annular protrusion;

[0040] 3. Limiting sleeve; 31. Locking part; 32. Slide groove;

[0041] 4. Elastic components;

[0042] 5. Slender body;

[0043] 6. End effector. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0045] In the description of the embodiments of this utility model, it should be understood that "distal end" refers to the end of the instrument or component away from the operator, and "proximal end" refers to the end of the instrument or component closer to the operator; "axial direction" refers to the direction parallel to the line connecting the centers of the distal and proximal ends of the instrument or component; "inner" and "outer" are positions defined by distance relative to the center of the instrument or component, where "inner" is the position closer to the center of the instrument or component, and "outer" is the position away from the center of the instrument or component; "upper" and "lower" refer to the orientation of the instrument in its actual use or working state. The above description of directional terms is only for the convenience of describing the embodiments of the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The foregoing disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model. To simplify the disclosure of the embodiments of this utility model, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the embodiments of this utility model. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0049] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0050] Example 1

[0051] A surgical instrument, such as Figures 1 to 11 As shown, it includes an end effector 6, an elongated body 5, and an operating handle. The two ends of the elongated body 5 are connected to the end effector 6 and the operating handle, respectively. Its specific structure can be found in existing technology and will not be elaborated here. In this embodiment, the outer shell surgical instrument is a laparoscopic anastomosis device. Its end effector 6 is used to suture tissue after entering the laparoscopic surgical channel. Specifically, the end effector 6 includes a pair of clamping members and a staple pusher assembly that can open or close relative to each other. One of the clamping members is an anvil, and the other is a staple cartridge assembly with staples. One of the anvil and staple cartridge assembly is fixed, while the other is movable. Specific details can be found in existing technology. It should be noted that the outer shell surgical instrument of this utility model is not limited to the aforementioned laparoscopic anastomosis device; it can also be an instrument for performing other surgical operations, such as: the end effector 6 can be an electrocautery hook, a tissue retractor, a laser scalpel, etc.

[0052] The operating handle includes a handle body 1, a rotating sleeve 2, a limiting sleeve 3, and an elastic element 4. The handle body 1 includes a handle housing, a trigger operably connected to the handle housing, and a firing drive assembly configured to respond to the trigger to generate a firing action. The structures of the trigger and the firing drive assembly can refer to the prior art, and will not be described in detail in this embodiment.

[0053] As an improvement to this utility model, such as Figure 9 As shown, the distal surface of the handle body 1 has multiple locking grooves 11 arranged around the axis of the elongated body 5, with the multiple locking grooves 11 connected end to end. Taking one locking groove 11 as an example, the two sides of the locking groove 11 are guide slopes 111 extending outward from near to far. Preferably, the locking groove 11 is a V-shaped locking groove. The rotating sleeve 2 is rotatably mounted on the handle body 1 around its axis. The rotating sleeve 2 is coaxial with the elongated body 5 and both are circumferentially fixed, so that when the rotating sleeve 2 rotates, it drives the elongated body 5 to rotate synchronously. The limiting sleeve 3 is movably disposed inside the rotating sleeve 2. The limiting sleeve 3 is coaxial with the rotating sleeve 2 and both are circumferentially fixed, that is, the limiting sleeve 3 can rotate synchronously with the rotating sleeve 2. In addition, the limiting sleeve 3 can also slide along its axial direction. Figure 11 As shown, the proximal end face of the limiting sleeve 3 has a locking part 31 adapted to the locking groove 11. Multiple locking parts 31 are arranged around the axis of the limiting sleeve 3, and are connected end-to-end, corresponding one-to-one with the locking groove 11. The locking part 31 can be inserted into its corresponding locking groove 11, locking the circumferential direction of the rotating sleeve 2. The elastic member 4 abuts between the limiting sleeve 3 and the rotating sleeve 2, ensuring that the limiting sleeve 3 always tends to move towards the direction of insertion of the locking part 31 into the locking groove 11, thereby locking the positions of the limiting sleeve 3 and the rotating sleeve 2. Preferably, the elastic member 4 is a spring in a compressed state. Through the cooperation of the elastic member 4, the locking part 31, and the locking groove 11, when the rotating sleeve 2 rotates to any angle, the locking part 31 can be inserted into the locking groove 11 to lock the rotating sleeve 2. This enables the end effector 6 to be stably stopped in multiple positions, precisely locking the end effector 6 at a set angle, eliminating the need for the operator to constantly hold the rotating sleeve, thus providing great convenience for surgical operations.

[0054] Furthermore, the limiting sleeve 3 and the elastic element 4 are respectively fitted onto the slender body 5, with the elastic element 4 located at the distal end of the limiting sleeve 3. The limiting sleeve 3 has a groove 32 extending along its axial direction (e.g., Figure 11 As shown, the inner side of the rotating sleeve 2 has a connecting post 23 extending towards its axis. The connecting post 23 passes through the slide groove 32 and connects to the slender body 5, which drives the slender body 5 and the limiting sleeve 3 to rotate synchronously. The connecting post 23 does not interfere with the axial movement of the slide groove 32. Preferably, the slide groove 32 has two sections respectively disposed on opposite sides of the limiting sleeve 3, and the connecting post 23 is correspondingly disposed with the slide groove 32.

[0055] The proximal end of the rotating sleeve 2 has an annular protrusion 24. The distal end of the handle body 1 has an annular groove 12 that matches the annular protrusion 24. The annular protrusion 24 is inserted into the annular groove 12, thereby achieving a rotatable connection between the rotating sleeve 2 and the handle body 1. For ease of installation, such as... Figure 10 As shown, the rotating sleeve 2 is composed of a first part 21 and a second part 22 that interlock, and the first part 21 and the second part 23 are approximately equal in size.

[0056] Working principle:

[0057] In the initial state, such as Figure 2 , Figure 3 As shown, the elastic element 4 drives the locking part 31 on the limiting sleeve 3 to insert into the locking groove 11 of the handle body 1 and lock the rotating sleeve 2, so that the end effector 6 stops in the current position.

[0058] Rotate the rotating sleeve 2, as follows Figure 4 , Figure 5 As shown, the rotating sleeve 2 drives the locking part 31 of the limiting sleeve 3 to slide along the guide slope 111 of the locking groove 11, the limiting sleeve 3 compresses the elastic element 4, and the limiting sleeve 3, the slender body 5 and the end effector 6 rotate synchronously with the rotating sleeve 2.

[0059] Continue rotating the rotating sleeve 2 in the same direction, as follows: Figure 6 , Figure 7 As shown, the locking part 31 of the limiting sleeve 3 continues to slide along the guide slope 111 of the locking groove 11 and moves to the farthest end of the locking groove 11. When the locking part 31 of the limiting sleeve 3 passes the farthest end of the locking groove 11, under the action of the abutting force of the elastic member 4, the locking part 31 of the limiting sleeve 3 is inserted into the next adjacent locking groove 11, locking the rotating sleeve 2.

[0060] Rotate the rotating sleeve 2 to the desired angle, which will rotate the end effector 6 to the target angle. Under the resistance of the elastic element 4, the locking part 31 of the limiting sleeve 3 will insert into the locking groove 11, stopping the rotating sleeve 2 at the target angle. The operator does not need to constantly hold the rotating sleeve. By adjusting the width of the end face locking groove 11, more precise angle control and stopping can be achieved, effectively improving the clinical performance of the product, especially when dealing with difficult angles.

[0061] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A surgical instrument comprising an end effector (6), an elongated body (5), and an operating handle, wherein both ends of the elongated body (5) are respectively connected to the end effector (6) and the operating handle, characterized in that, The operating handle includes: The handle body (1) has a plurality of locking grooves (11) arranged around the axis of the elongated body (5) on its distal end surface. Rotating sleeve (2), which is rotatably mounted on the handle body (1) about its axis, the rotating sleeve (2) is coaxial with the elongated body (5) and both are circumferentially fixed; A limiting sleeve (3) is movably disposed within the rotating sleeve (2). The limiting sleeve (3) and the rotating sleeve (2) are coaxial and circumferentially fixed. The proximal end face of the limiting sleeve (3) has a locking part (31) adapted to the locking groove (11). The locking part (31) can be inserted into the locking groove (11) to lock the rotating sleeve (2) circumferentially. The elastic element (4) abuts between the limiting sleeve (3) and the rotating sleeve (2) and makes the limiting sleeve (3) always have a tendency to move the locking part (31) toward the direction of insertion into the locking groove (11).

2. The surgical instrument according to claim 1, characterized in that, The locking part (31) has a plurality of parts arranged around the axis of the limiting sleeve (3), and the plurality of locking parts (31) are provided in a one-to-one correspondence with the locking groove (11).

3. The surgical instrument according to claim 2, characterized in that, The multiple locking slots (11) are connected end to end, and the multiple locking parts (31) are connected end to end.

4. The surgical instrument according to claim 1, characterized in that, The two sides of the lock groove (11) are guide slopes (111) that extend outward from near to far.

5. The surgical instrument according to claim 4, characterized in that, The locking slots (11) are symmetrically arranged; and / or, The locking groove (11) is V-shaped.

6. The surgical instrument according to claim 1, characterized in that, The limiting sleeve (3) is fitted onto the elongated body (5). The limiting sleeve (3) has a groove (32) extending along its axial direction. The rotating sleeve (2) has a connecting post (23) extending towards its axis on its inner side. The connecting post (23) passes through the groove (32) and is connected to the elongated body (5).

7. The surgical instrument according to claim 1, characterized in that, The elastic element (4) is a spring in a compressed state; and / or, The elastic element (4) is sleeved on the slender body (5) and located on the far end side of the limiting sleeve (3).

8. The surgical instrument according to claim 1, characterized in that, The rotating sleeve (2) consists of a first part (21) and a second part (22) that interlock.

9. The surgical instrument according to claim 1, characterized in that, The distal end of the handle body (1) has an annular groove (12), and the proximal end of the rotating sleeve (2) has an annular protrusion (24) that is adapted to the annular groove (12), and the annular protrusion (24) is embedded in the annular groove (12).

10. The surgical instrument according to claim 1, characterized in that, The surgical instrument is a laparoscopic anastomosis device.

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