Bending mechanism and anastomat

Abstract

The utility model provides a bending mechanism and an anastomat. The bending mechanism comprises a knob shell, a transmission assembly, a steering assembly and a locking assembly. The knob shell is rotationally connected with an operation knob, and a mounting cavity is formed in the knob shell; the transmission assembly comprises a rotating shaft, a driving gear, a first sliding rack and a transmission pull rod, one end of the rotating shaft is connected with the operation knob, the other end of the rotating shaft is connected with the driving gear, the first sliding rack is slidably arranged in the mounting cavity and is in transmission meshing with the driving gear, one end of the transmission pull rod is connected with the first sliding rack, and the other end of the transmission pull rod penetrates out of the mounting cavity; the steering assembly comprises a second sliding rack and a steering gear, the second sliding rack is connected with the transmission pull rod, and the steering gear is in transmission engagement with the second sliding rack; the locking assembly is used for locking rotation of the driving gear. According to the bending mechanism and the anastomat, the executing end of the anastomat can be bent, the goodness of fit between the executing end of the anastomat and a focus is increased, and the anastomat is suitable for more application environments.

Description

Technical Field

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

[0002] Staplers are medical devices that replace manual suturing. Due to the development of modern science and technology and the improvement of manufacturing technology, the staplers currently used in clinical practice are of reliable quality, easy to use, tight, and of appropriate tightness. In particular, they have the advantages of fast suturing, simple operation, and few side effects and surgical complications. They have also made it possible to remove tumors that were previously inoperable, and are highly favored and praised by clinical surgeons at home and abroad. The main working principle of the stapler is to use titanium nails to sever or staple tissues, similar to a stapler. Since the front end of the stapler is usually a straight rod, the straight rod is usually unable to match and staple the lesion well. In order to adapt to more application environments and to achieve the suturing process in a surgical environment with limited space and limited angles when the surgical space and angle are limited, it is necessary to design a stapler with a bending mechanism so that the front end rod-shaped actuator of the stapler can be bent. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the front end actuator of the existing stapler is a straight rod structure, which is not suitable for more application environments. In order to overcome the above defects of the existing technology, the present invention provides a bending mechanism.

[0004] The utility model provides a bending mechanism, comprising: a knob housing, a transmission assembly, a steering assembly, and a locking assembly; an operating knob is rotatably connected to the knob housing, and a mounting cavity is provided in the knob housing; the transmission assembly comprises a rotating shaft, a driving gear, a first sliding rack and a transmission pull rod, one end of the rotating shaft is connected to the operating knob, and the other end of the rotating shaft is connected to the driving gear, the first sliding rack is slidably arranged in the mounting cavity and is transmission-engaged with the driving gear, one end of the transmission pull rod is connected to the first sliding rack, and the other end of the transmission pull rod passes through the mounting cavity; the steering assembly comprises a second sliding rack and a steering gear, the second sliding rack is connected to the end of the transmission pull rod away from the mounting cavity, the steering gear is transmission-engaged on the second sliding rack and is used to drive the steering actuator to turn; the locking assembly is installed in the mounting cavity and is used to lock the rotation of the driving gear.

[0005] Compared with the prior art, the bending mechanism of the present application has the following advantages: when the operating knob is turned, the operating knob drives the driving gear to rotate through the rotating shaft, and the driving gear drives the first sliding rack in the installation cavity to slide, and the first sliding rack drives the movement of the second sliding rack through the transmission pull rod, and the second sliding rack drives the rotation and steering of the steering gear, and the steering gear drives the steering actuator, thereby realizing the turning of the steering actuator, making the anastomosis device suitable for more application environments, and the gear rack meshing transmission, the structure is stable and reliable, and the turning stability of the steering actuator is improved; at the same time, a locking assembly is provided, so that the steering actuator is reliably limited after turning, thereby improving the angle accuracy after turning.

[0006] In one possible embodiment, the locking assembly includes a main gear disc, a locking block and a driving member, the main gear disc is fixedly connected to the rotating shaft, the main gear disc is provided with a plurality of tooth grooves distributed along the circumferential direction, the locking block is slidably connected in the mounting cavity, the locking block is provided with a convex tooth that fits into the tooth groove, and the driving member is installed in the mounting cavity and is used to drive the convex tooth of the locking block to move toward the tooth groove.

[0007] Compared with the prior art, the above technical solution can realize the locking of the driving gear by the locking assembly, and the tooth grooves and the convex teeth cooperate reliably, thereby improving the stability of the locking.

[0008] In a possible embodiment, the driving member is a spring, one end of the spring is connected to the knob housing, and the other end of the spring is connected to the locking block, and the rebound direction of the spring is set in the same direction as the sliding direction of the locking block.

[0009] Compared with the existing technology, the above technical solution can provide a stable driving force for the locking block, while facilitating the compression of the spring and facilitating the turning of the operating knob.

[0010] In a possible embodiment, the main gear disc is an integrally formed metal structure, the locking block and the protruding tooth are an integrally formed metal structure, the rotating shaft and the driving gear are an integrally formed metal structure, and the first sliding rack is an integrally formed metal structure.

[0011] Compared with the existing technology, the above technical solution can improve the strength of the transmission structure and the reliability of use.

[0012] In a possible implementation, a square hole is provided at the center of the main gear disc, the cross section of the rotating shaft is square, and the rotating shaft is passed through the direction hole.

[0013] Compared with the prior art, the above technical solution can improve the rotational stability of the main gear disc.

[0014] In a possible implementation, the plurality of tooth grooves are distributed on the main gear disc in a fan-shaped structure, and arc angles of two adjacent tooth grooves are set to be the same.

[0015] Compared with the existing technology, the above technical solution can ensure the rotation angle of the bend and improve the accuracy of the bend.

[0016] In a possible implementation, the operating knob is integrally provided with a secondary gear disc corresponding to the primary gear disc.

[0017] Compared with the existing technology, the above technical solution can enable the auxiliary gear disc to directly output force to the locking block, which is convenient to use.

[0018] The present invention also provides a stapler with a bending mechanism as described above, so as to realize the suturing process in a surgical environment with limited space and limited angles when the surgical space and angle are limited. The execution end of the stapler can be bent to increase the matching and anastomosis degree between the execution end of the stapler and the lesion, so as to be suitable for more application environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the anastomosis device of the present utility model;

[0020] Figure 2 A top view of the stapler of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the bending mechanism of the present invention;

[0022] Figure 4 It is a partial cross-sectional view of the bending mechanism;

[0023] Figure 5 It is a partial exploded diagram of the bending mechanism;

[0024] Figure 6 is a structural diagram of the steering assembly;

[0025] Figure 7 Schematic diagram of the structure of the main gear disc;

[0026] Description of reference numerals:

[0027] 1. Knob housing; 11. Mounting cavity; 2. Operating knob; 21. Auxiliary sprocket; 3. Transmission assembly; 31. Rotating shaft; 32. Drive gear; 33. First sliding rack; 34. Transmission pull rod; 4. Steering assembly; 41. Second sliding rack; 42. Steering gear; 5. Locking assembly; 51. Main sprocket; 511. Tooth groove; 512. Square hole; 52. Locking block; 521. Protruding tooth; 53. Spring. DETAILED DESCRIPTION

[0028] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figures 1 to 7 The embodiment of the present application discloses a bending mechanism, comprising: a knob housing 1, a transmission assembly 3, a steering assembly 4, and a locking assembly 5; the knob housing 1 is rotatably connected to an operating knob 2, and a mounting cavity 11 is provided in the knob housing 1; the transmission assembly 3 comprises a rotating shaft 31, a driving gear 32, a first sliding rack 33 and a transmission pull rod 34, one end of the rotating shaft 31 is connected to the operating knob 2, the other end of the rotating shaft 31 is connected to the driving gear 32, the first sliding rack 33 is slidably arranged in the mounting cavity 11 and is connected to the The driving gear 32 is engaged in transmission, one end of the transmission rod 34 is connected to the first sliding rack 33, and the other end of the transmission rod 34 passes through the mounting cavity 11; the steering assembly 4 includes a second sliding rack 41 and a steering gear 42, the second sliding rack 41 is connected to the end of the transmission rod 34 away from the mounting cavity 11, the steering gear 42 is engaged in transmission on the second sliding rack 41 and is used to drive the steering actuator to turn; the locking assembly 5 is installed in the mounting cavity 11 and is used to lock the rotation of the driving gear 32.

[0033] As can be seen from the above, by turning the operating knob 2, the operating knob 2 drives the driving gear 32 to rotate through the rotating shaft 31, and the driving gear 32 drives the first sliding rack 33 in the mounting cavity 11 to slide. The first sliding rack 33 drives the movement of the second sliding rack 41 through the transmission rod 34, and the second sliding rack 41 drives the rotation and steering of the steering gear 42, thereby realizing the turning of the steering actuator. The gear and rack are engaged and transmitted, and the structure is stable and reliable, thereby improving the turning stability of the steering actuator.

[0034] See also Figure 5 and Figure 7 In this embodiment, the locking assembly 5 includes a main gear disc 51, a locking block 52 and a driving member. The main gear disc 51 is fixedly connected to the rotating shaft 31. The main gear disc 51 is provided with seven tooth grooves 511 distributed at intervals along the circumferential direction. The locking block 52 is slidably connected in the mounting cavity 11. The locking block 52 is provided with a convex tooth 521 that fits into the tooth groove 511. The driving member is installed in the mounting cavity 11 and is used to drive the convex tooth 521 of the locking block 52 to move toward the tooth groove 511, thereby enabling the locking assembly 5 to lock the driving gear 32. The tooth groove 511 and the convex tooth 521 cooperate reliably, thereby improving the stability of the locking.

[0035] Specifically, the driving member is a spring 53, one end of the spring 53 is connected to the knob housing 1, and the other end of the spring 53 is connected to the locking block 52. The rebound direction of the spring 53 is set in the same direction as the sliding direction of the locking block 52, thereby providing a stable driving force for the locking block 52, and at the same time facilitating the compression of the spring 53, which is conducive to turning the operating knob 2.

[0036] In order to improve the reliability of the transmission structure, the main gear plate 51 is an integral metal structure, the locking block 52 and the protruding tooth 521 are an integral metal structure, the rotating shaft 31 and the driving gear 32 are an integral metal structure, and the first sliding rack 33 is an integral metal structure.

[0037] In order to improve the rotational stability of the main gear disc 51 , a square hole 512 is provided at the center of the main gear disc 51 . The cross section of the rotating shaft 31 is square, and the rotating shaft 31 is inserted into the direction hole.

[0038] In this embodiment, the seven tooth grooves 511 are distributed on the main gear plate 51 in a fan-shaped structure, and the arc angles of two adjacent tooth grooves 511 are set to be the same.

[0039] In this embodiment, the operating knob 2 is integrally provided with a secondary toothed disc 21 corresponding to the primary toothed disc 51. The secondary toothed disc 21 directly applies force to the locking block 52, facilitating ease of use. Specifically, the operating knob 2 and the secondary toothed disc 21 are integrally molded from plastic. This means that the friction between the plastic and metal components creates a noticeable sound, providing a signal to the user. Furthermore, the user can clearly feel the action and reaction forces, providing feedback to the user and facilitating operation.

[0040] In this embodiment, the steering gear 42 drives the steering actuator to have three turning angles a on the left and right, namely 30°, 45°, and 60°, thereby achieving multi-angle adjustment.

[0041] This embodiment also provides a stapler with a bending mechanism as described above, so that when the surgical space and angle are limited, the suturing process can be realized in a surgical environment with limited space and limited angles. The execution end of the stapler can be bent to increase the matching and fit between the execution end of the stapler and the lesion, so as to be suitable for more application environments.

[0042] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0043] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0044] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A bending mechanism, characterized in that: include: A knob housing (1), an operating knob (2) being rotatably connected to the knob housing (1), and a mounting cavity (11) being provided in the knob housing (1); A transmission assembly (3), the transmission assembly (3) comprising a rotating shaft (31), a driving gear (32), a first sliding rack (33) and a transmission pull rod (34), one end of the rotating shaft (31) being connected to the operating knob (2), the other end of the rotating shaft (31) being connected to the driving gear (32), the first sliding rack (33) being slidably disposed in the mounting cavity (11) and being in transmission engagement with the driving gear (32), one end of the transmission pull rod (34) being connected to the first sliding rack (33), and the other end of the transmission pull rod (34) passing through the mounting cavity (11); A steering assembly (4), the steering assembly (4) comprising a second sliding rack (41) and a steering gear (42), the second sliding rack (41) being connected to an end of the transmission rod (34) away from the mounting cavity (11), the steering gear (42) being transmission-engaged with the second sliding rack (41) and used to drive the steering actuator to turn; A locking assembly (5) is installed in the installation cavity (11) and is used to lock the rotation of the driving gear (32).

2. The bending mechanism according to claim 1, characterized in that: The locking assembly (5) comprises a main toothed disc (51), a locking block (52) and a driving member, wherein the main toothed disc (51) is fixedly connected to the rotating shaft (31), the main toothed disc (51) is provided with a plurality of tooth grooves (511) spaced apart along the circumferential direction, the locking block (52) is slidably connected in the mounting cavity (11), the locking block (52) is provided with a convex tooth (521) that fits into the tooth groove (511), and the driving member is mounted in the mounting cavity (11) and is used for driving the convex tooth (521) of the locking block (52) to move toward the tooth groove (511).

3. The bending mechanism according to claim 2, characterized in that: The driving member is a spring (53), one end of the spring (53) is connected to the knob housing (1), and the other end of the spring (53) is connected to the locking block (52), and the rebound direction of the spring (53) is arranged in the same direction as the sliding direction of the locking block (52).

4. The bending mechanism according to claim 2, characterized in that: The main gear disc (51) is a metal integrally formed structure, the locking block (52) and the convex tooth (521) are metal integrally formed structures, the rotating shaft (31) and the driving gear (32) are metal integrally formed structures, and the first sliding rack (33) is a metal integrally formed structure.

5. The bending mechanism according to claim 2, characterized in that: A square hole (512) is provided at the center of the main gear disc (51), the cross section of the rotating shaft (31) is square, and the rotating shaft (31) is inserted into the direction hole.

6. The bending mechanism according to claim 2, characterized in that: The plurality of tooth grooves (511) are distributed on the main tooth disc (51) in a fan-shaped structure, and the arc angles of two adjacent tooth grooves (511) are set to be the same.

7. The bending mechanism according to claim 6, characterized in that: The operating knob (2) is integrally provided with a secondary toothed disc (21) corresponding to the primary toothed disc (51).

8. The bending mechanism according to claim 1, characterized in that: The steering gear (42) drives the steering actuator to have three turning angles on the left and right, namely 30°, 45° and 60°.

9. A stapler, characterized in that: It comprises a bending mechanism as described in any one of claims 1-8.

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