Novel steering system and anastomat

Abstract

The invention discloses a novel steering system which is arranged on a gun barrel assembly and a cutting assembly, and the gun barrel assembly comprises a rotating head and a gun barrel installed on the rotating head; the cutting assembly comprises a cutting structure and a mounting structure, one end of the mounting structure is connected with the gun barrel, and the other end of the mounting structure is rotationally matched with the cutting structure; the steering system comprises a rotating structure, a transmission structure and a gear structure, the rotating structure can drive the cutting structure to steer left and right relative to the mounting structure through the transmission structure, and the rotating structure can adjust the steering gear of the cutting structure through the gear structure. The steering system is arranged on the gun barrel assembly and the cutting assembly, and a rotating structure and a transmission structure are arranged to drive the cutting structure to swing left and right relative to the mounting structure; the steering system is provided with a gear structure, and when the rotating structure drives the transmission structure, a corresponding rotating gear can be fed back.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a novel steering system and anastomosis device. Background Art

[0002] A stapler is a medical device that replaces tissue separation and manual suturing. Its main working principle is to use a built-in cutting knife to cut and separate tissues, and to use titanium staples to sew the tissues, similar to a stapler. According to the form of the incision, it is generally divided into linear cutting and circular cutting staplers. Linear staplers are usually used in minimally invasive surgery. In order to minimize the incision and increase the use positions of the stapler, linear staplers generally have the function of steering the stapling port. Although the existing staplers on the market are equipped with a steering system, the steering structure cannot specifically lock the steering gear, the steering position feedback is poor, and the operation is more complicated. Summary of the invention

[0003] In view of this, the present invention discloses a novel steering system and a stapler, which can drive a cutting structure to steer and can adjust the steering gear through a gear structure.

[0004] The present application discloses a novel steering system, which is arranged in a gun rod assembly and a cutting assembly, wherein: The gun rod assembly includes a rotating head and a gun rod mounted on the rotating head; The cutting assembly comprises a cutting structure and a mounting structure, one end of the mounting structure is connected to the gun rod, and the other end is rotatably matched with the cutting structure; The steering system includes a rotating structure, a transmission structure and a gear structure. The rotating structure can drive the cutting structure to turn left and right relative to the mounting structure through the transmission structure, and the rotating structure can adjust the steering gear of the cutting structure through the gear structure.

[0005] Furthermore, the rotating structure includes a knob and a steering cam, the steering cam is rotatably arranged inside the rotating head and connected to the transmission structure, and the knob drives the steering cam to rotate inward at a certain angle to drive the cutting structure to turn left and right through the transmission structure.

[0006] Furthermore, the steering cam includes a driving disk and a driving shaft, a rotating groove is provided on the rotating head, the driving disk is located in the rotating groove, an eccentric shaft is provided on the bottom surface of the driving disk, the eccentric shaft is centrifugally distributed relative to the driving disk and is connected to the transmission structure, the bottom end of the driving shaft is connected to the driving disk, and the top end of the driving shaft extends out of the rotating groove and is connected to the knob.

[0007] Furthermore, the steering system also includes a chuck and a turntable, the chuck is positioned in the rotating groove and above the driving disk, the turntable is above the chuck and positioned and matched with the driving shaft, and the knob can drive the turntable to rotate relative to the chuck through the driving shaft; the turntable and the chuck are matched through a gear structure.

[0008] Furthermore, the gear structure includes a positioning groove arranged on the chuck and a positioning protrusion arranged on the turntable, and a plurality of the positioning grooves are distributed in a circular array around the central axis of the chuck, and the positioning protrusion cooperates with the positioning grooves. The turntable rotates relative to the chuck to drive the positioning protrusion to cooperate with different positioning grooves.

[0009] Furthermore, a rotating head cover is provided at the top of the rotating slot, and the top of the driving shaft passes through the rotating head cover and is connected to the knob; the rotating head cover is located above the turntable, and a spring is provided between the rotating head cover and the turntable, and the spring applies elastic force to the turntable to make it adhere to the chuck.

[0010] Furthermore, the transmission structure includes a steering pull tab that slides with the gun rod assembly, and a waist-shaped hole is provided on the steering pull tab. The eccentric shaft extends into the waist-shaped hole. When the drive disk rotates, the eccentric shaft can apply a pulling force or a pushing force to the steering pull tab, so as to drive the cutting structure to turn relative to the mounting structure through the transmission structure.

[0011] Furthermore, a support cylinder is slidingly provided inside the rotating head, a locking protrusion is provided on the support cylinder, a notch groove is provided at the edge of the driving disk, and the locking protrusion is located in the notch groove to prevent the steering cam from rotating; the support cylinder slides relative to the rotating head and drives the locking protrusion to disengage from the notch groove to unlock the steering cam; the steering pull tab slides in cooperation with the support cylinder.

[0012] Furthermore, the transmission structure also includes a first steering rod and a second steering rod, one end of the first steering rod is connected to the steering pull plate, the other end of the first steering rod is rotatably connected to one end of the second steering rod, and the other end of the second steering rod is rotatably connected to the cutting structure; the first steering rod is slidably arranged inside the gun barrel, and the second steering rod is slidably arranged inside the mounting structure.

[0013] The present application also discloses a stapler, comprising the steering system as described above.

[0014] Compared with the prior art, the technical solution disclosed in this application has the following beneficial effects: The steering system is arranged on the gun barrel assembly and the cutting assembly, and drives the cutting structure to swing left and right relative to the mounting structure by arranging a rotating structure and a transmission structure; and the steering system is provided with a gear structure, and when the rotating structure drives the transmission structure, the corresponding rotation gear can be fed back. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the assembly of the steering system, the gun rod assembly and the cutting assembly; Figure 2 An exploded view of the steering system, the gun assembly, and the cutting assembly; Figure 3 An exploded view of the steering system, the gun assembly, and the cutting assembly; Figure 4 It is a structural schematic diagram of the steering cam; Figure 5 It is a schematic diagram of the structure of the knob; Figure 6 It is a schematic diagram of the structure of the rotating head cover; Figure 7 is a schematic diagram of the structure of the chuck; Figure 8 is a schematic diagram of the structure of the turntable; Fig. 9 A schematic diagram of the structure of the cutting assembly.

[0016] Description of the attached drawings 10. Gun rod assembly; 11. Rotating head; 111. Rotating slot; 112. First slot; 12. Gun rod; 122. Support tube; 121. Locking protrusion; 20. Cutting assembly; 21. Cutting structure; 211. Rotating connector; 22. Mounting structure; 221. Upper fixing plate; 222. Lower fixing plate; 30. Steering system; 31. Knob; 311. Limiting protrusion; 32. Steering cam; 321. Driving plate; 322 , drive shaft; 323, eccentric shaft; 324, second slot; 325, notch slot; 326, fixing pin; 33, rotating head cover; 331, arc-shaped limit slot; 34, chuck; 341, positioning slot; 342, first clamping protrusion; 35, spring; 36, steering pull tab; 361, waist-shaped hole; 37, first steering rod; 38, second steering rod; 39, turntable; 391, positioning protrusion; 392, second clamping protrusion. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be a central component at the same time. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those generally understood by technicians in the technical field of the present invention. It should also 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, an electrical connection, or a connection between the 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. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0018] It should also be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] like Figure 1 and Figure 2 As shown, the present invention discloses a novel steering system 30, which is arranged on a stapler. The stapler includes a gun rod assembly 10 and a cutting assembly 20, and the steering system 30 is used to drive the cutting assembly 20 to steer.

[0020] The stapler is a medical device that replaces tissue separation and manual suturing. Its main working principle is to use a built-in cutting knife to cut and separate tissues, and to use titanium nails to sew the tissues, similar to a stapler. According to the form of the incision, it is generally divided into linear cutting and circular cutting staplers. The linear stapler is usually used in minimally invasive surgery. In order to reduce the incision as much as possible and increase the use position of the stapler, the linear stapler generally has the function of turning the stapling. In the present application, the steering system 30 is provided to drive the cutting assembly 20 to turn.

[0021] Specifically, the cutting assembly 20 and the gun rod assembly 10 are components of the stapler, the cutting assembly 20 is detachably connected to the gun rod assembly 10, the steering system 30 is disposed on the cutting assembly 20 and the gun rod assembly 10, and the steering system 30 can drive the cutting assembly 20 to turn relative to the gun rod assembly 10.

[0022] In the present application, the gun rod assembly 10 includes a rotating head 11 and a gun rod 12, and the gun rod 12 is connected to the rotating head 11. The cutting assembly 20 includes a cutting structure 21 and a mounting structure 22, one end of the mounting structure 22 is detachably connected to the gun rod 12, and the other end of the mounting structure 22 is rotatably matched with the cutting structure 21. In the present application, the steering system 30 can drive the cutting structure 21 to turn left and right relative to the mounting structure 22.

[0023] Specifically, the cutting structure 21 is one of the main components of the stapler, and is mainly used for cutting and suturing. The specific composition structure of the cutting structure 21 is not described one by one in this application.

[0024] like Figure 3 As shown, in the present application, the steering system 30 includes a rotating structure and a transmission structure, the rotating structure is arranged on the rotating head 11, the transmission assembly is arranged on the gun rod assembly 10 and the cutting assembly 20, and the two ends of the transmission assembly are respectively connected to the rotating structure and the cutting structure 21, and the rotating structure drives the transmission structure, and the transmission structure can apply a pulling force or a pushing force to the cutting structure 21, thereby driving the cutting structure 21 to swing left or right relative to the mounting structure 22.

[0025] In the present application, the rotating structure includes a knob 31 and a steering cam 32, the knob 31 is connected to the steering cam 32, the steering cam 32 is rotatably arranged in the rotating head 11, the rotating head 11 is connected to the transmission structure, and the knob 31 can drive the steering cam 32 to rotate to pull or push the transmission structure.

[0026] like Figure 3 and Figure 4As shown, in the present application, the steering cam 32 includes a driving disk 321 and a driving shaft 322, the driving disk 321 is in the shape of a disc, the driving shaft 322 is coaxially distributed with the driving disk 321, the driving disk 321 is arranged in the rotating head 11 and is connected to the transmission structure, one end of the driving shaft 322 is integrally formed with the driving disk 321, and the other end of the driving shaft 322 extends out of the rotating head 11 and is connected to the knob 31, and the knob 31 can drive the driving disk 321 on the driving shaft 322 to rotate so as to drive the transmission structure through the driving disk 321.

[0027] Specifically, a rotating slot 111 is provided on the rotating head 11, and the driving disk 321 is rotatably provided in the slot body of the rotating slot 111. The top end of the driving shaft 322 extends out of the slot body to connect the knob 31, and the knob 31 can drive the driving disk 321 to rotate in the rotating slot 111.

[0028] In the present application, the top end of the driving shaft 322 is positioned and matched with the knob 31 via a fixing pin 326 .

[0029] Furthermore, an eccentric shaft 323 is provided at the bottom end of the driving disk 321, and the eccentric shaft 323 is eccentrically distributed; the transmission structure includes a steering pull tab 36 that slides with the gun rod assembly 10, and a waist-shaped hole 361 is provided on the steering pull tab 36, and the eccentric shaft 323 extends into the waist-shaped hole 361. When the steering cam 32 rotates, the eccentric shaft 323 can apply a pulling force or a pushing force to the steering pull tab 36, so as to drive the cutting structure 21 to turn relative to the mounting structure 22 through the transmission structure. Specifically, when the knob 31 drives the driving disk 321 to rotate along a first direction, the eccentric shaft 323 can drive the steering pull tab 36 through the waist-shaped hole 361, and can apply a pulling force to the cutting structure 21 through the rotating structure to drive the cutting structure 21 to turn right relative to the mounting structure 22; when the knob 31 drives the driving disk 321 to rotate along a second direction, the second direction is opposite to the first direction, and the knob 31 can apply a thrust to the cutting structure 21 through the driving disk 321 and the transmission structure to drive the cutting structure 21 to turn left relative to the mounting structure 22.

[0030] The rotating head 11 is provided with a support cylinder 122 for sliding inside, and a locking protrusion 121 is provided on the support cylinder 122. A notch groove 325 is provided at the edge of the driving disk 321. The locking protrusion 121 is located in the notch groove 325 to prevent the steering cam 32 from rotating. The support cylinder 122 slides relative to the rotating head 11 and drives the locking protrusion 121 to disengage from the notch groove 325 to unlock the steering cam 32. Specifically, the steering pull tab 36 is slidably matched with the support cylinder 122. When the cutting structure 21 needs to be turned, an external force is applied to the support cylinder 122, which can drive the support cylinder 122 to slide in one direction so that the locking protrusion 121 is disengaged from the notch groove 325, thereby unlocking the steering cam 32.

[0031] In the present application, a sliding driving key may be provided on the rotating head 11 to realize driving the support tube 122; the support tube 122 may also be pressed against when the cutting assembly 20 and the gun rod assembly 10 are installed to make it slide to realize unlocking the steering cam 32. The specific structure is not introduced one by one in the present application, and it is sufficient that the locking protrusion 121 can lock or unlock the steering cam 32 through the notch groove 325.

[0032] Furthermore, a rotating head cover 33 is provided on the rotating head 11 , and the top end of the driving shaft 322 passes through the rotating head cover 33 and is connected to the knob 31 . The knob 31 is provided above the rotating head 11 to drive the steering cam 32 to rotate.

[0033] Please continue to see Figure 5 and Figure 6 The rotating head cover 33 is provided with an arc-shaped limiting groove 331, the knob 31 is arranged above the rotating head cover 33, and the top end of the driving shaft 322 passes through the rotating head cover 33 and is connected to the knob 31; the knob 31 is provided with a limiting protrusion 311, and the limiting protrusion 311 extends into the arc-shaped limiting groove 331, and the arc-shaped limiting groove 331 limits the rotation angle of the knob 31 through the limiting protrusion 311. When the knob 31 drives the steering cam 32 to rotate, when the limiting protrusion 311 abuts against one end face of the arc-shaped limiting groove 331, the cutting structure 21 can be driven to turn to the maximum angle in one direction; when the limiting protrusion 311 abuts against the other end face of the arc-shaped limiting groove 331, the cutting structure 21 can be driven to turn to the maximum angle in the other direction.

[0034] Combination Figure 3 See also Figure 7 and Figure 8Furthermore, the rotating structure further includes a rotating disk 39 and a chuck 34, both of which are arranged in the rotating groove 111, and the rotating disk 39 and the chuck 34 are annular devices. The driving disk 321, the rotating disk 39 and the chuck 34 are coaxially distributed, and the top end of the driving shaft 322 can pass through the rotating disk 39 and the chuck 34.

[0035] Further, the chuck 34 is arranged above the driving disk 321, the rotating disk 39 is arranged above the chuck 34, the rotating head cover 33 is located above the rotating disk 39, the chuck 34 is positioned and matched in the rotating slot 111, the rotating disk 39 is positioned and matched with the driving shaft 322, and when the knob 31 drives the driving shaft 322 to rotate, it can also drive the rotating disk 39 to move synchronously. A gear structure is arranged between the rotating disk 39 and the chuck 34, and the rotation gear can be adjusted by the gear structure while the rotating disk 39 and the chuck 34 rotate relative to each other.

[0036] Furthermore, the gear structure includes a plurality of positioning grooves 341 arranged on the chuck 34 and a positioning protrusion 391 arranged on the turntable 39. In the present application, the plurality of positioning grooves 341 are distributed in a circular array around the central axis of the chuck 34, and the plurality of positioning protrusions 391 are distributed in a circular array around the central axis of the turntable 39. When the chuck 34 and the turntable 39 are attached to each other, the positioning protrusion 391 extends into the positioning groove 341, and when the knob 31 drives the steering cam 32 to rotate, the driving disk 321 can be driven to rotate. At this time, the positioning protrusion 391 can be moved to different positioning grooves 341, and the gear position of the knob 31 rotation can be limited by cooperating with different positioning grooves 341, thereby determining the steering angle of the cutting structure 21.

[0037] Furthermore, there are multiple positioning protrusions 391 , and the multiple positioning protrusions 391 respectively cooperate with different positioning grooves 341 .

[0038] Furthermore, the rotating structure also includes a spring 35, which is arranged between the rotating head cover 33 and the turntable 39. The spring 35 applies elastic force to the turntable 39 to make it adhere to the chuck 34, thereby ensuring the tight fit between the turntable 39 and the chuck 34, and thereby ensuring the firmness of the fit between the positioning protrusion 391 and the positioning groove 341.

[0039] In the present application, at least one first clamping groove 112 is provided in the rotating groove 111 in the rotating head 11, and a first clamping protrusion 342 corresponding to the first clamping groove 112 is provided on the chuck 34; and / or a second clamping groove 324 is provided on the driving shaft 322 of the steering cam 32, and a second clamping protrusion 392 is provided on the turntable 39, and the turntable 39 is sleeved on the driving shaft 322 and positioned and matched with the second clamping groove 324 through the second clamping protrusion 392.

[0040] In the present application, a gun rod 12 is disposed at one end of the rotating head 11, one end of the mounting structure 22 is detachably connected to the gun rod 12, the other end of the mounting structure 22 is rotationally matched with the cutting structure 21, and the transmission structure is connected to the cutting structure 21 and can drive the cutting structure 21 to turn left and right relative to the mounting structure 22. Specifically, Fig. 9 As shown, the mounting structure 22 includes an upper fixing plate 221 and a lower fixing plate 222, the upper fixing plate 221 is arranged above the lower fixing plate 222 and the two are arranged opposite to each other, and the cutting structure 21 is provided with a rotating connecting member 211, the rotating connecting member 211 is located between the upper fixing plate 221 and the lower fixing plate 222, and the upper and lower side surfaces of the rotating connecting member 211 are respectively rotatably connected with the upper fixing plate 221 and the lower fixing plate 222 through a rotating shaft. The transmission structure is connected with the rotating connecting member 211, and when the transmission structure applies a pulling force to the rotating connecting member 211, the cutting structure 21 turns rightward, and when the transmission structure applies a pushing force to the rotating connecting member 211, the cutting structure 21 turns leftward.

[0041] Specifically, the transmission structure further includes a first steering rod 37 and a second steering rod 38, one end of the first steering rod 37 is connected to the steering pull tab 36, the other end of the first steering rod 37 is rotatably connected to one end of the second steering rod 38, and the other end of the second steering rod 38 is rotatably connected to the rotating connector 211 on the cutting structure 21. The first steering rod 37 is slidably disposed inside the gun barrel 12, and the second steering rod 38 is slidably disposed inside the mounting structure 22.

[0042] In the present application, when the rotating structure is working, the knob 31 drives the steering cam 32 to rotate and can also drive the turntable 39 to rotate. The turntable 39 rotates relative to the chuck 34, so that the positioning protrusions 391 on the turntable 39 are matched with the positioning recesses 341 on the chuck 34 one by one, and the positioning protrusions 391 enter into different positioning grooves 341 respectively, and then when the knob 31 is rotated, the vibration feedback when the turntable 349 and the chuck 34 are positioned and matched can be felt, and then the rotation angle can be sensed to determine the steering gear. The operation is simple, the feedback is stable, and the cost is low.

[0043] The present application also discloses a stapler, which comprises the above-mentioned steering system.

[0044] The present invention can be implemented in various forms and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are intended to illustrate the invention, but are not intended to limit the scope of the present invention.

Claims

1. A new steering system, characterized in that: The steering system is arranged on the gun rod assembly and the cutting assembly, wherein: The gun rod assembly includes a rotating head and a gun rod mounted on the rotating head; The cutting assembly comprises a cutting structure and a mounting structure, one end of the mounting structure is connected to the gun rod, and the other end is rotatably matched with the cutting structure; The steering system includes a rotating structure, a transmission structure and a gear structure. The rotating structure can drive the cutting structure to turn left and right relative to the mounting structure through the transmission structure, and the rotating structure can adjust the steering gear of the cutting structure through the gear structure.

2. A novel steering system according to claim 1, characterized in that: The rotating structure includes a knob and a steering cam. The steering cam is rotatably arranged inside the rotating head and connected to the transmission structure. The knob drives the steering cam to rotate inward at a certain angle to drive the cutting structure to turn left and right through the transmission structure.

3. A novel steering system according to claim 2, characterized in that: The steering cam includes a driving disk and a driving shaft. A rotating groove is provided on the rotating head. The driving disk is located in the rotating groove. An eccentric shaft is provided on the bottom surface of the driving disk. The eccentric shaft is centrifugally distributed relative to the driving disk and is connected to the transmission structure. The bottom end of the driving shaft is connected to the driving disk, and the top end of the driving shaft extends out of the rotating groove and is connected to the knob.

4. A new steering system according to claim 3, characterized in that: The steering system also includes a chuck and a turntable. The chuck is positioned in the rotating groove and above the driving disk. The turntable is located above the chuck and is positioned and matched with the driving shaft. The knob can drive the turntable to rotate relative to the chuck through the driving shaft. The turntable and the chuck are matched through a gear structure.

5. A novel steering system according to claim 4, characterized in that: The gear structure includes a positioning groove arranged on the chuck and a positioning protrusion arranged on the turntable, a plurality of the positioning grooves are distributed in a circular array around the central axis of the chuck, the positioning protrusions cooperate with the positioning grooves, and the turntable rotates relative to the chuck to drive the positioning protrusions to cooperate with different positioning grooves.

6. A novel steering system according to claim 5, characterized in that: A rotating head cover is provided at the top of the rotating slot, and the top of the driving shaft passes through the rotating head cover and is connected to the knob; the rotating head cover is located above the turntable, and a spring is provided between the rotating head cover and the turntable, and the spring applies elastic force to the turntable to make it adhere to the chuck.

7. A novel steering system according to claim 3, characterized in that: The transmission structure includes a steering pull piece that is slidably matched with the gun rod assembly. The steering pull piece is provided with a waist-shaped hole, and the eccentric shaft extends into the waist-shaped hole. When the drive disk rotates, the eccentric shaft can apply a pulling force or a pushing force to the steering pull piece, so as to drive the cutting structure to turn relative to the mounting structure through the transmission structure.

8. A novel steering system according to claim 7, characterized in that: A support cylinder is slidingly provided inside the rotating head, a locking protrusion is provided on the support cylinder, a notch groove is provided at the edge of the driving disk, and the locking protrusion is located in the notch groove to prevent the steering cam from rotating; the support cylinder slides relative to the rotating head and drives the locking protrusion to disengage from the notch groove to unlock the steering cam; the steering pull tab slides in cooperation with the support cylinder.

9. A novel steering system according to claim 8, characterized in that: The transmission structure also includes a first steering rod and a second steering rod, one end of the first steering rod is connected to the steering pull plate, the other end of the first steering rod is rotatably connected to one end of the second steering rod, and the other end of the second steering rod is rotatably connected to the cutting structure; the first steering rod is slidably arranged inside the gun barrel, and the second steering rod is slidably arranged inside the mounting structure.

10. A stapler, characterized in that: Comprising a steering system as claimed in any one of claims 1 to 9.

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