Anastomat

Abstract

The invention provides an anastomat which comprises a supporting inner tube, a steering part and a driving unit, and a guide groove is formed in the supporting inner tube in the axial direction of the supporting inner tube; the steering piece is connected to the supporting inner pipe in a pivoted mode. The driving unit comprises a push rod and a sleeve assembly, the push rod is arranged in the guide groove in a sliding mode and connected with the steering part in a pivoted mode through a connecting rod, the sleeve assembly is arranged on the supporting inner pipe and the push rod in a sleeving mode and connected with the push rod in a threaded mode, and the sleeve assembly can rotate relative to the supporting inner pipe to drive the push rod to slide along the guide groove. The steering part is driven by the connecting rod to rotate relative to the supporting inner pipe. The problems that in the prior art, a jaw assembly needs to be adjusted by means of external force of an auxiliary instrument, accurate adjustment by a user is inconvenient, and the angle adjustment precision is poor are solved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a stapler. Background Art

[0002] Staplers are often used as endoscopic surgical instruments to replace traditional open surgical devices, because smaller incisions can often shorten postoperative recovery time and reduce complications. Therefore, a series of endoscopic surgical instruments suitable for accurately placing the jaw assembly of the stapler through the cannula of the cannula needle at the desired surgical site have been developed. After these jaw assemblies enter the tissue, they perform appropriate shearing and suturing operations to achieve diagnostic or therapeutic effects.

[0003] As one of the most commonly used minimally invasive surgical instruments, staplers usually have application scenarios that require adjustment of the angle of the jaw assembly. In the existing patent CN101327141B, the connector part connects the jaw assembly. In the specific operation process, first, the jaw assembly is placed inside the human body and close to the tissue of interest; then, the knob is pulled proximally to drive the shaft part to move proximally, so that the groove on the connector part is separated from the teeth on the shaft part; then, an auxiliary device located inside the human body to assist the operation of the jaw assembly applies an external force to the jaw assembly, and then the jaw assembly is moved to swing the jaw assembly to the required angle; when the jaw assembly swings to the required angle, the knob is released, and the shaft part moves distally under the action of the spring, and then the groove on the shaft part re-engages with the teeth on the shaft part, thereby locking the angle of the jaw assembly.

[0004] However, in the above-mentioned adjustment process, it is often necessary to adjust the angle of the jaw assembly with the help of external force applied by auxiliary equipment located in the human body, and the operating space in the human body is small, which makes it inconvenient for the user to accurately adjust the angle.

[0005] In addition, during the above adjustment process, the angle needs to be locked by meshing the grooves on the connector part with the teeth on the shaft part, and there is a groove wall between any two adjacent grooves on the connector part. Therefore, only step-wise adjustment can be achieved during the angle adjustment process. For example, when the teeth on the shaft part are inserted into the adjacent first and second grooves on the connector part, there is a certain angle difference between the defined angles. For example, when inserted into the first groove on the connector part, the angle formed by the jaw assembly is 20°, and when inserted into the second groove on the connector part, the angle formed by the jaw assembly is 25°. There is an angle difference of 5° between the two angles. Therefore, this adjustment method cannot achieve high-precision angle adjustment. Summary of the invention

[0006] The purpose of the present invention is to provide a stapler to solve the problem in the prior art that the jaw assembly needs to be adjusted with the help of external force from an auxiliary device, which is inconvenient for the user to adjust accurately and has poor angle adjustment accuracy.

[0007] In order to achieve the above-mentioned object of the present invention, one embodiment of the present invention provides a stapler, which comprises: A supporting inner tube, wherein a guide groove is provided on the supporting inner tube along its axial direction; a steering member pivotally connected to the supporting inner tube; The driving unit includes a push rod and a sleeve assembly, wherein the push rod is slidably arranged in the guide groove and is pivotally connected to the steering member through a connecting rod, and the sleeve assembly is sleeved on the support inner tube and the push rod and is threadedly connected to the push rod. The sleeve assembly can rotate relative to the support inner tube to drive the push rod to slide along the guide groove, and then drive the steering member to rotate relative to the support inner tube through the connecting rod.

[0008] As a further improvement of one embodiment of the present invention, the stapler also includes a rotating knob, which is coaxially connected to the sleeve assembly and connected to the supporting inner tube, and is used to synchronously drive the sleeve assembly and the supporting inner tube to pivot during rotation. When the rotating knob is fixed, the sleeve assembly can rotate relative to the rotating knob and the supporting inner tube.

[0009] As a further improvement of one embodiment of the present invention, the sleeve assembly is sleeved on one end of the push rod, a protrusion is provided on the side wall of the push rod near the one end, an external thread is provided on the end face of the protrusion, and when the push rod slides along the guide groove, the end face is located outside the guide groove.

[0010] As a further improvement of one embodiment of the present invention, the sleeve assembly includes a sleeve and a sleeve shell, the sleeve is sleeved on the supporting inner tube and the push rod and its inner wall is provided with an internal thread matching the external thread, the sleeve shell is sleeved on the sleeve and is coaxially connected to the rotating knob.

[0011] As a further improvement of one embodiment of the present invention, the sleeve shell includes a first end, the first end is inserted into the rotating knob and has an interface portion intersecting with the rotating knob, scale lines are arranged on the side wall of the sleeve shell at circumferential intervals around the sleeve shell, the scale lines are arranged adjacent to the interface portion, and an indicator mark is provided on the side wall of the rotating knob at a position adjacent to the interface portion.

[0012] As a further improvement of one embodiment of the present invention, it also includes a damping structure located between the end face of the first end and the rotating knob, the damping structure includes a plurality of trigger protrusions arranged on the end face and a plurality of scale sensing protrusions arranged on the rotating knob, the plurality of trigger protrusions are arranged on the end face at intervals around the central axis of the sleeve shell, and the plurality of scale sensing protrusions are arranged on a side of the rotating knob facing the end face at intervals around the central axis of the rotating knob. When the rotating knob is fixed, the sleeve shell can rotate relative to the rotating knob, so that the trigger protrusions abut against the scale sensing protrusions during the rotation process and produce a damping effect.

[0013] As a further improvement of one embodiment of the present invention, the side wall of the sleeve shell includes a large diameter section and a small diameter section arranged along its axial direction, a mounting groove is provided on the end surface of the rotating knob facing the sleeve shell, the small diameter section is inserted into the mounting groove, and the end of the small diameter section away from the large diameter section forms the first end, and the outer side of the large diameter section is smoothly connected to the outer side of the side wall of the rotating knob to form a boundary line, and the boundary line is set as the boundary portion.

[0014] As a further improvement of one embodiment of the present invention, an annular groove or an annular protrusion is arranged on the outer side of the small diameter section around its circumference, and an annular protrusion or annular groove is arranged on the inner side of the side wall of the installation groove around the circumference of the side wall, and the annular protrusion is slidably arranged in the annular groove.

[0015] As a further improvement of an embodiment of the present invention, a plurality of anti-slip protrusions are provided on the outer side of the side wall of the sleeve shell outside the rotating knob, and the plurality of anti-slip protrusions are distributed at intervals along the circumference of the sleeve shell.

[0016] As a further improvement of one embodiment of the present invention, the stapler also includes a jaw assembly, which includes a dowel seat and a magazine unit, one end of the dowel seat and one end of the magazine unit are pivotally connected to the steering member through an opening and closing pivot axis, and the steering member is pivotally connected to the supporting inner tube through an angle pivot axis, and the angle pivot axis is orthogonal to the opening and closing pivot axis.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The sleeve assembly is usually sleeved on the push rod and the support inner tube that are located outside the human body. The push rod can be driven to slide in the guide groove by rotating the sleeve assembly, thereby driving the steering member to rotate relative to the support inner tube through the push rod, thereby adjusting the angle between the steering member and the support inner tube. This adjustment method does not require the aid of auxiliary equipment, which facilitates the user to accurately adjust the angle of the steering member relative to the support inner tube outside the human body; and, during the angle adjustment process, the rotational movement of the sleeve assembly can drive the push rod to move in the guide groove through the threaded structure, so that stepless adjustment can be achieved during the angle adjustment process, greatly improving the accuracy of the angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a stapler provided in one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the local structure in the exploded view; Figure 3 for Figure 1 A schematic diagram of a local structure in a cross-sectional view in a top-down direction; Figure 4 for Figure 2 Schematic diagram of the structure of the middle push rod; Figure 5 for Figure 1 A schematic diagram of the local structure of the stapler in the top view when adjusting the angle from the initial position to the limit position; Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of the stapler in the figure is located at an extreme position; Figure 7 for Figure 5 The enlarged view of the M in the middle; Figure 8 for Figure 6 The enlarged view of the N position in the middle; Fig. 9 for Figure 2 Left view of the rotary knob in ; Fig.10 for Figure 2 Left side view of the center casing housing.

[0019] The above description of the drawings includes the following reference numerals: 1. Drive unit; 11. Putting; 111, raised portion; 1111, external thread; 12. Casing assembly; 121, casing; 1211, internal thread; 122, casing housing; 1221, first end; 1222, scale line; 1223. Large diameter section; 1224, small trail section; 12241, annular groove; 1225, anti-slip protrusions; 13. Connecting rod; 131, connecting pin; 2. Support the inner tube; 21. Guide groove; 22. Angle pivot axis; 3. Steering parts; 31. Install the ear seat; 6. Turn the knob; 61. Indicator mark; 62. Installation groove; 621, annular protrusion; 63. Rotating groove; 71. Trigger bump; 72. Scale sensing convex point; 8. Jaw assembly; 81. Anvil seat; 82. Warehouse unit; 83. Opening and closing pivot axis. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0023] In order to solve the problems in the prior art that the jaw assembly needs to be adjusted with the help of external force from an auxiliary device, which is inconvenient for users to adjust accurately and has poor angle adjustment accuracy, the present invention provides a new stapler.

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-10 As shown, the present invention provides a stapler, which includes a driving unit 1, a supporting inner tube 2 and a steering member 3.

[0026] The supporting inner tube 2 is provided with a guide groove 21 along its axial direction, and the guide groove 21 is used to guide the push rod 11 to move along its axial direction. The steering member 3 is pivotally connected to the supporting inner tube 2 .

[0027] The driving unit 1 specifically includes a push rod 11 and a sleeve assembly 12. The push rod 11 is slidably disposed in the guide groove 21 and is pivotally connected to the steering member 3 through a connecting rod 13. The sleeve assembly 12 is sleeved on the support inner tube 2 and the push rod 11 and is threadedly connected to the push rod 11. The sleeve assembly 12 can rotate relative to the support inner tube 2 to drive the push rod 11 to slide along the guide groove 21, and then drive the steering member 3 to rotate relative to the support inner tube 2 through the connecting rod 13.

[0028] It should be noted that in the present invention, when the connecting rod 13 drives the steering member 3 to rotate relative to the supporting inner tube 2, a wide range of angle adjustment can be achieved. Figure 5 As shown, the angle a between the deflection member 3 and the supporting inner tube 2 can be adjusted between 0 and 90 degrees.

[0029] The working principle of the technical solution to be protected by the present invention is: the sleeve assembly 12 is rotated, and the sleeve assembly 12 can rotate relative to the supporting inner tube 2, so that the push rod 11 can be driven to slide along the guide groove 21, and then it can be transmitted to the steering member 3 through the connecting rod 13, so that the steering member 3 can rotate relative to the supporting inner tube 2 to adjust the angle.

[0030] It should be emphasized that when the steering member 3 is pivotally connected to the supporting inner tube 2 in the present invention, it has a pivotally connected portion connected to the supporting inner tube 2, and the pivotally connected portion is located outside the straight line where the push rod 11 is located.

[0031] In the above arrangement, the sleeve assembly 12 is usually sleeved on the push rod 11 and the portion of the support inner tube 2 located outside the human body. The push rod 11 can be driven to slide in the guide groove 21 by rotating the sleeve assembly 12, thereby driving the steering member 3 to rotate relative to the support inner tube 2 through the push rod 11, thereby adjusting the angle between the steering member 3 and the support inner tube 2. This adjustment method does not require the aid of auxiliary equipment, which facilitates the user to accurately adjust the angle of the steering member 3 relative to the support inner tube 2 outside the human body; and, during the angle adjustment process, the rotational movement of the sleeve assembly 12 can drive the push rod 11 to move in the guide groove 21 through the threaded structure, so that stepless adjustment can be achieved during the angle adjustment process, greatly improving the accuracy of the angle adjustment.

[0032] In addition, the push rod 11 drives the steering member 3 to rotate relative to the supporting inner tube 2 through the connecting rod 13, and adjusts the angle between the steering member 3 and the supporting inner tube 2. The connecting rod 13 can achieve a large angle adjustment, thereby overcoming the problem of a small angle adjustment range between the steering member 3 and the supporting inner tube 2 in the prior art.

[0033] Further, refer to Figure 1-3 As shown, the stapler of the present invention further includes a rotating knob 6, which is coaxially connected to the sleeve assembly 12 and connected to the supporting inner tube 2. Optionally, the supporting inner tube 2 can be fixedly connected to the rotating knob 6. The rotating knob 6 is used to synchronously drive the sleeve assembly 12 and the supporting inner tube 2 to pivot when the rotating knob 6 rotates. When the rotating knob 6 is fixed, the sleeve assembly 12 can rotate relative to the rotating knob 6 and the supporting inner tube 2, so as to drive the push rod 11 to slide along the guide groove 21 through the sleeve assembly 12, and then drive the steering member 3 to rotate relative to the supporting inner tube 2 through the connecting rod 13, that is, adjust the angle between the steering member 3 and the supporting inner tube 2.

[0034] It should be emphasized that in the present invention, the steering member 3 can be driven to rotate toward one side of the support inner tube 2 through the connecting rod 13, and the rotating knob 6 can synchronously drive the sleeve assembly 12 and the support inner tube 2 to pivot when it rotates. When the rotating knob 6 is rotated, the steering member 3 can adjust the angle with the support inner tube 2 on any side of the radial direction of the support inner tube 2, so it can be adjusted in more space.

[0035] Optionally, in this embodiment, refer to Figure 2 As shown in , a rotation groove 63 is provided on the outer side of the side wall of the rotating knob 6. During the process of driving the rotating knob 6 to rotate, the user can place the finger in the rotation groove 63 and then apply a rotational force to the rotating knob 6, thereby preventing the finger from sliding relative to the side wall of the rotating knob 6 and making it easier to pivot the rotating knob 6.

[0036] Preferably, reference Fig. 9 As shown in , a plurality of the rotating grooves 63 can be evenly spaced on the circumference of the side wall of the rotating knob 6, so that the rotating knob 6 can be conveniently held and driven to rotate at various positions on the circumference of the side wall of the rotating knob 6.

[0037] Further, refer to Figure 4As shown, the sleeve assembly 12 is sleeved on one end of the push rod 11. In order to further optimize the structure, a protrusion 111 is specially designed on the side wall of the push rod 11 near this end. The protrusion 111 not only enhances the structural strength of the push rod 11, but also provides an additional support point for it. An external thread 1111 is provided on the end face of the protrusion 111. Such a layout ensures that the end face can always remain outside the guide groove 21 during the sliding of the push rod 11 along the guide groove 21, thereby avoiding any possible interference. This design not only improves the durability of the stapler, but also ensures that the external thread 1111 and the sleeve assembly 12 can cooperate smoothly and stably, thereby achieving more precise angle adjustment and limit functions.

[0038] return Figure 2 As best shown in the figure, the other end of the push rod 11 is provided with a connecting hole for installing a connecting pin 131. The connecting pin 131 set in the connecting hole can enable the push rod 11 to be pivotally connected to one end of the connecting rod 13. This connection method allows the push rod 11 and the connecting rod 13 to rotate relative to each other within a certain range, thereby improving the flexibility of the mechanism.

[0039] Furthermore, the steering member 3 includes a mounting ear seat 31, and the other end of the connecting rod 13 is also pivotally connected to the mounting ear seat 31 via a connecting pin 131, ensuring that the connecting rod 13 can stably transmit the sliding movement of the push rod 11 to the steering member 3, thereby achieving precise rotation of the steering member 3 relative to the supporting inner tube 2.

[0040] In this embodiment, reference Figure 5 , Figure 6 and Figure 8 As shown, the sleeve assembly 12 is composed of two parts: a sleeve 121 and a sleeve shell 122. The sleeve 121 is sleeved on the supporting inner tube 2 and the push rod 11. The inner wall of the sleeve 121 is carefully provided with an internal thread 1211 that matches the external thread 1111. The sleeve assembly 12 and the push rod 11 are threadedly connected through the internal thread 1211 and the external thread 1111. The sleeve shell 122 is firmly sleeved on the outside of the sleeve 121, which not only provides additional protection for the sleeve 121, but also realizes a coaxial connection with the rotating knob 6 through its external structure. This layered design not only improves the structural strength of the sleeve assembly 12, but also ensures that the rotating knob 6 can stably drive the sleeve assembly 12 and the supporting inner tube 2 to pivot as a whole, thereby realizing the precise operation of the anastomosis device.

[0041] Furthermore, the sleeve housing 122 is designed with a first end 1221 , which is inserted into the rotating knob 6 and forms an intersecting interface with the rotating knob 6 .

[0042] refer to Figure 5 and Figure 7As shown, in order to more intuitively show the rotation angle of the steering member 3 relative to the supporting inner tube 2, scale lines 1222 are arranged on the side wall of the sleeve shell 122 at intervals around the circumference thereof. Preferably, these scale lines 1222 are arranged at equal intervals around the circumference of the side wall of the sleeve shell 122. Moreover, these scale lines 1222 are cleverly arranged at positions adjacent to the junction, so that the observer can read them easily.

[0043] Correspondingly, a striking indicator mark 61 is provided on the side wall of the rotating knob 6, near the junction. When the rotating knob 6 is fixed, the sleeve housing 122 can be rotated to drive the sleeve 121 to rotate relative to the rotating knob 6, and the scale line 1222 will also move relative to the rotating knob 6 and form an accurate corresponding relationship with the indicator mark 61. By observing the scale line 1222 pointed to by the indicator mark 61, the user can quickly and accurately determine the rotation angle of the steering member 3 relative to the supporting inner tube 2.

[0044] It is understandable that the scale lines 1222 related to the adjustment angle need to be obtained through a series of precise conversions. Specifically, factors such as the rotation angle of the sleeve assembly 12 relative to the rotating knob 6, the transmission ratio of the external thread 1111 and the internal thread 1211, and the actual rotation range of the steering member 3 relative to the supporting inner tube 2 need to be considered. Through these conversions, the precise rotation angle of the steering member 3 relative to the supporting inner tube 2 can be finally obtained, and these rotation angles are set in the form of scale lines 1222 at corresponding positions on the sleeve housing 122.

[0045] Further, refer to Figure 6 , Figure 8 , Fig. 9 and Fig.10 The stapler of the present invention also cleverly incorporates a damping structure, which is carefully arranged between the end surface of the first end 1221 and the rotating knob 6. The damping structure consists of two parts: one is a plurality of triggering protrusions 71 arranged on the end surface, Fig.10 As shown, they surround the central axis of the sleeve housing 122 and are carefully arranged on the end surface in an evenly spaced manner; second, a plurality of scale sensing protrusions 72 are provided on the rotating knob 6, referring to Fig. 9 As shown, they also surround the central axis of the rotary knob 6 and are distributed on the surface of the rotary knob 6 facing the end surface.

[0046] When the rotary knob 6 is in a fixed state, the sleeve housing 122 can rotate freely relative to it. In this process, the triggering protrusions 71 will meet and abut against the scale sensing protrusions 72 one by one, thereby forming a damping effect.

[0047] This design enhances the user's perception of the rotation angle. Specifically, during the rotation of the sleeve housing 122, each scale sensing protrusion 72 will meet a trigger protrusion 71. As the sleeve housing 122 continues to rotate, the trigger protrusion 71 will slowly move from one side of the scale sensing protrusion 72 to the other side. The damping feeling generated during this period provides the user with clear rotation feedback, allowing them to more accurately control the rotation angle of the steering member 3 relative to the supporting inner tube 2.

[0048] In addition, this design also improves the stability of operation. For example, when the rotary knob 6 rotates, the damping force generated by the damping structure can enable the rotary knob 6 to better synchronously drive the sleeve assembly 12 and the supporting inner tube 2 to pivot.

[0049] Further, refer to Figures 8 to 10 As shown, the side wall of the sleeve housing 122 is designed with a unique large diameter section 1223 and a small diameter section 1224, which are arranged along the axial direction of the sleeve housing 122. The rotating knob 6 is provided with a mounting groove 62 on the side facing the sleeve housing, and the small diameter section 1224 has a small diameter and can be cleverly inserted into the mounting groove 62, thereby achieving a stable connection between the two. The end of the small diameter section 1224 away from the large diameter section 1223 forms the first end 1221.

[0050] The large diameter section 1223 has a larger diameter, and its outer side can perfectly and smoothly butt with the outer side of the side wall of the rotating knob 6, thereby forming a junction line, which is also the junction portion. This junction line is not only more neat and beautiful in appearance, but also serves as an important mark for judging the relative position of the sleeve housing 122 and the rotating knob 6 in actual use. The scale line 1222 and the indicator mark 61 are both arranged near the junction line. Such a design not only enhances the overall structural strength of the stapler, but also improves the convenience and accuracy of its operation.

[0051] Further references Figure 8 As shown, an annular groove 12241 is cleverly designed on the outer side of the small diameter section 1224. This groove surrounds the circumference of the small diameter section 1224 and provides precise positioning for subsequent cooperation.

[0052] Accordingly, refer to Figure 8 and Fig. 9 As shown, an annular protrusion 621 is also provided on the inner side of the side wall of the mounting groove 62 , which is also circumferentially arranged around the side wall of the mounting groove 62 , forming a perfect match with the annular groove 12241 on the small diameter section 1224 .

[0053] When the rotating knob 6 is firmly fixed, the sleeve housing 122 can rotate freely relative to it. In this process, the annular protrusion 621 will be tightly embedded in the annular groove 12241, and slide smoothly in the groove as the sleeve housing 122 rotates. Such a design not only enhances the stability of the sleeve housing 122 during rotation, but also ensures smooth and accurate rotation, thereby improving the overall performance and reliability of the stapler.

[0054] As an equivalent embodiment, optionally, the annular protrusion 621 can also be arranged on the outer side of the small diameter section 1224 around the circumference of the small diameter section 1224, and correspondingly, the annular groove 12241 can also be arranged on the inner side of the side wall of the mounting groove 62, which is also arranged around the circumference of the side wall of the mounting groove 62, forming a perfect match with the annular protrusion 621 on the small diameter section 1224.

[0055] Designers can make selective designs according to actual needs, and the present invention does not limit this. Any method using any of the above two methods, or any method equivalent to the above two methods, should be included in the scope of protection of the present invention.

[0056] On the outside of the side wall of the sleeve housing 122, at a position outside the rotating knob 6, a plurality of anti-skid protrusions 1225 are carefully arranged. These anti-skid protrusions 1225 can be arranged along the circumference of the sleeve housing 122.

[0057] Preferably, these anti-skid protrusions 1225 are cleverly distributed in a uniformly spaced manner. They not only enhance the roughness of the surface of the sleeve housing 122, but also provide the user with a more stable grip. During operation, these anti-skid protrusions 1225 can effectively prevent the hand from slipping, ensuring that the user can stably control the rotation of the sleeve housing 122, thereby further improving the operating accuracy and safety of the stapler.

[0058] Furthermore, the stapler is also equipped with a key jaw assembly 8, which consists of two major parts: an anvil 81 and a magazine unit 82. One end of the anvil 81 and one end of the magazine unit 82 are pivotally connected to the steering member 3 through a carefully designed opening and closing pivot shaft 83. The anvil 81 and the magazine unit 82 can pivotally move toward each other to close, or move away from each other to open.

[0059] In addition, the steering member 3 itself is also pivotally connected to the supporting inner tube 2 through the angle pivot axis 22. Thus, the angle between the steering member 3 and the supporting inner tube 2 can be adjusted. It is worth noting that the angle pivot axis 22 is orthogonal to the opening and closing pivot axis 83. Such a layout not only ensures the stability of the jaw assembly 8 during the opening and closing process, but also enables the steering member 3 to be accurately adjusted in angle relative to the supporting inner tube 2. This series of ingenious designs together constitute an efficient and precise operating mechanism of the stapler.

[0060] In this embodiment, optionally, the angle pivot shaft 22 is arranged on the support inner tube 2 and forms an integral structure with the support inner tube 2, so that the overall structure is more stable when the steering member 3 is connected to the support inner tube 2 through the angle pivot shaft 22.

[0061] In summary, the embodiments of the present invention achieve the following technical effects: First, the sleeve assembly 12 is usually sleeved on the push rod 11 and the portion of the support inner tube 2 located outside the human body. The push rod 11 can be driven to slide in the guide groove 21 by rotating the sleeve assembly 12, so that the push rod 11 drives the steering member 3 to rotate relative to the support inner tube 2, thereby adjusting the angle between the steering member 3 and the support inner tube 2. This adjustment method does not require the use of auxiliary equipment, and is convenient for the user to accurately adjust the angle of the steering member 3 relative to the support inner tube 2 outside the human body; Second, during the angle adjustment process, the rotation of the sleeve assembly 12 can drive the push rod 11 to move along the guide groove 21 through the threaded structure, thereby achieving stepless adjustment during the angle adjustment process, greatly improving the accuracy of the angle adjustment; Third, the push rod 11 drives the steering member 3 to rotate relative to the supporting inner tube 2 through the connecting rod 13, and adjusts the angle between the steering member 3 and the supporting inner tube 2. The connecting rod 13 can achieve a large angle adjustment, which overcomes the problem of a small angle adjustment range between the steering member 3 and the supporting inner tube 2 in the prior art; Fourthly, the rotating knob 6 can synchronously drive the sleeve assembly 12 and the supporting inner tube 2 to pivot when the rotating knob 6 rotates. When the rotating knob 6 rotates, the steering member 3 can adjust the angle with the supporting inner tube 2 on any side of the radial direction of the supporting inner tube 2, so it can be adjusted in more space.

[0062] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stapler, characterized in that: include: A supporting inner tube, wherein a guide groove is provided on the supporting inner tube along its axial direction; a steering member pivotally connected to the supporting inner tube; The driving unit includes a push rod and a sleeve assembly, wherein the push rod is slidably arranged in the guide groove and is pivotally connected to the steering member through a connecting rod, and the sleeve assembly is sleeved on the support inner tube and the push rod and is threadedly connected to the push rod. The sleeve assembly can rotate relative to the support inner tube to drive the push rod to slide along the guide groove, and then drive the steering member to rotate relative to the support inner tube through the connecting rod.

2. The stapler according to claim 1, characterized in that: The stapler also includes a rotating knob, which is coaxially connected to the sleeve assembly and connected to the supporting inner tube, and is used to synchronously drive the sleeve assembly and the supporting inner tube to pivot when rotating. When the rotating knob is fixed, the sleeve assembly can rotate relative to the rotating knob and the supporting inner tube.

3. The stapler according to claim 1, characterized in that: The sleeve assembly is sleeved on one end of the push rod, a protrusion is provided on the side wall of the push rod near the one end, an external thread is provided on the end face of the protrusion, and when the push rod slides along the guide groove, the end face is located outside the guide groove.

4. The stapler according to claim 3, characterized in that: The sleeve assembly includes a sleeve and a sleeve shell. The sleeve is sleeved on the supporting inner tube and the push rod and its inner wall is provided with an internal thread matching the external thread. The sleeve shell is sleeved on the sleeve and is coaxially connected with the rotating knob.

5. The stapler according to claim 4, characterized in that: The sleeve shell includes a first end, the first end is inserted into the rotating knob and has an interface portion intersecting with the rotating knob, scale lines are arranged on the side wall of the sleeve shell at circumferential intervals around the sleeve shell, the scale lines are arranged adjacent to the interface portion, and an indicator mark is arranged on the side wall of the rotating knob at a position adjacent to the interface portion.

6. The stapler according to claim 5, characterized in that: It also includes a damping structure located between the end face of the first end and the rotating knob, the damping structure includes a plurality of trigger protrusions arranged on the end face and a plurality of scale sensing protrusions arranged on the rotating knob, the plurality of trigger protrusions are arranged on the end face at intervals around the central axis of the sleeve shell, and the plurality of scale sensing protrusions are arranged on a side of the rotating knob facing the end face at intervals around the central axis of the rotating knob. When the rotating knob is fixed, the sleeve shell can rotate relative to the rotating knob, so that the trigger protrusions abut against the scale sensing protrusions during the rotation process and produce a damping effect.

7. The stapler according to claim 5, characterized in that: The side wall of the sleeve shell includes a large diameter section and a small diameter section arranged along the axial direction thereof. A mounting groove is provided on the end surface of the rotating knob facing the sleeve shell. The small diameter section is inserted into the mounting groove. An end of the small diameter section away from the large diameter section forms the first end. The outer side of the large diameter section smoothly butts with the outer side of the side wall of the rotating knob to form a boundary line, and the boundary line is set as the boundary portion.

8. The stapler according to claim 7, characterized in that: An annular groove or annular protrusion is arranged on the outer side of the small diameter section around its circumference, and an annular protrusion or annular groove is arranged on the inner side of the side wall of the installation groove around the circumference of the side wall, and the annular protrusion is slidably arranged in the annular groove.

9. The stapler according to claim 5, characterized in that: A plurality of anti-skid protrusions are arranged on the outer side of the side wall of the sleeve shell at a position outside the rotating knob, and the plurality of anti-skid protrusions are distributed at intervals along the circumference of the sleeve shell.

10. The stapler according to claim 1, characterized in that: The stapler also includes a jaw assembly, which includes a nail support and a magazine unit. One end of the nail support and one end of the magazine unit are pivotally connected to the steering member through an opening and closing pivot axis. The steering member is pivotally connected to the supporting inner tube through an angle pivot axis, and the angle pivot axis is orthogonal to the opening and closing pivot axis.

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