Joint turning device for anastomat

Abstract

The utility model discloses a joint turning device for an anastomat, which relates to the technical field of electric anastomats and comprises an anastomat jaw, a rotating part, a sleeve, a fixing rod and a slider, and the rotating part is fixedly connected to one end of the anastomat jaw; the rotating piece is rotationally mounted at one end, extending out of the sleeve, of the mounting block; the fixing rod is provided with a first position for fixing the rotating part and a second position separated from the rotating part; the sliding block is installed on the installation block in a sliding mode, a control rod penetrates through the installation block, one end of the control rod is connected with the installation block, and the sliding block is used for driving the fixing rod to be switched between the first position and the second position. The bending angle is large while the operation hand feeling is good, so that a doctor has a better operation space, and the bending angle-adjustable endoscope can be suitable for medical treatment under more complex clinical conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of electric staplers, and particularly relates to a joint angle turning device for a stapler. Background Art

[0002] The stapler plays the most crucial role in laparoscopic surgery. Due to the limited space in the abdominal cavity or thoracic cavity, traditional straight laparoscopic staplers cannot fully and effectively reach the required surgical site for clamping, transecting, and anastomosing tissues. Therefore, an elbow stapler with a turnable stapler jaw is needed. In the straight state, this turnable elbow stapler enters the thoracic cavity or abdominal cavity through a trocar, and the stapler jaw is bent at a certain angle through a bending control mechanism on the external handle, and a series of operations such as clamping, transecting, and anastomosing the surgical site are performed. After the operation is completed, it returns to the straight state and exits the body. The existing steering connecting rod is rigidly connected and the length of the force arm between it and the rotating shaft is limited by space, resulting in limited left and right swing angles. This makes it impossible to reach the ideal operating position during a series of operations such as clamping, transecting, and anastomosing in some surgeries. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a joint angle turning device for a stapler, which increases the swing angle of the stapler jaw and has better adaptability.

[0004] A joint angle turning device for a stapler according to an embodiment of the first aspect of the utility model includes: a stapler jaw, a rotating member, a sleeve, a fixed rod, and a slider. The rotating member is fixedly connected to one end of the stapler jaw; an installation block is arranged in the sleeve, and the rotating member is rotatably installed at one end of the installation block extending out of the sleeve; the fixed rod has a first position for fixing the rotating member and a second position separated from the rotating member; the slider is slidably installed on the installation block, a control rod is penetrated in the installation block, one end of the control rod is connected to the installation block, and the slider is used for driving the fixed rod to switch between the first position and the second position.

[0005] According to some embodiments of the utility model, the stapler jaw includes a cartridge assembly located at the lower part and an anvil connected to the cartridge assembly and located at the upper part, and the rear part of the cartridge assembly is bolted to the rotating member.

[0006] According to some embodiments of the present utility model, one end of the rotating member away from the staple cartridge assembly is arranged in an arc shape, and a plurality of grooves are arranged at intervals at one end of the rotating member away from the staple cartridge assembly. An installation hole is opened at one end of the installation block close to the rotating member, and the fixing rod is inserted into the installation hole. When the fixing rod is in the first position, the fixing rod extends into the groove, and when the fixing rod is in the second position, the fixing rod disengages from the groove.

[0007] According to some embodiments of the present utility model, a spring is arranged in the installation hole, one end of the spring abuts against the fixing rod, and the other end abuts against the bottom wall of the installation hole. The spring is used to push the fixing rod to move towards the rotating member.

[0008] According to some embodiments of the present utility model, a rotating shaft is connected to the rotating member, and a strip-shaped hole for the rotating shaft to be embedded is opened at the center of the slider. The rotating shaft plays a guiding role for the slider.

[0009] According to some embodiments of the present utility model, two jacks are symmetrically opened on the slider with the axis of the sleeve as the center, and two control rods are arranged and respectively connected in the two jacks.

[0010] According to some embodiments of the present utility model, the staple cartridge assembly is hinged to the sleeve by bolts.

[0011] According to some embodiments of the present utility model, a protrusion capable of being embedded in the groove is arranged at one end of the fixing rod close to the rotating member.

[0012] According to some embodiments of the present utility model, a chamfer is arranged at one end of the slider close to the staple cartridge assembly.

[0013] According to some embodiments of the present utility model, the angular range of the distribution area of the grooves on the rotating member is at least 130 degrees.

[0014] A joint rotation angle device for a stapler according to an embodiment of the present utility model has at least the following beneficial effects:

[0015] (1) The steering link is cancelled, and the bending angle of the stapler jaws is changed by touching other objects, and the stapler jaws have a larger bending angle;

[0016] (2) The original steering link is changed to a control rod for driving the slider to move back and forth, and there is no need to modify the structure for driving the steering link in the handle of the original electric stapler, saving costs;

[0017] (3) The spring is used to drive the protrusion to snap into the groove, which is fixed reliably and effectively reduces the shaking of the stapler jaws during work.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments, where:

[0020] Figure 1 is a schematic diagram of the whole of an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the mounting block of an embodiment of the present utility model;

[0022] Figure 3 is Figure 2 an enlarged view of part A in

[0023] Figure 4 is a schematic diagram of the rotating member of an embodiment of the present utility model;

[0024] Figure 5 is a schematic diagram of the slider of an embodiment of the present utility model;

[0025] Figure 6 is a schematic diagram of the mounting hole of an embodiment of the present utility model;

[0026] Figure 7 is Figure 6 an enlarged view of part B in

[0027] Figure 8 is a schematic diagram of the installation of the rotating member of an embodiment of the present utility model.

[0028] Reference Numerals in the Drawings:

[0029] Stapler jaws 100, cartridge assembly 110, anvil 120;

[0030] Rotating member 200, groove 210, rotating shaft 220;

[0031] Sleeve 300, mounting block 310, control rod 311, mounting hole 312, spring 313;

[0032] Fixed rod 400, protrusion 410;

[0033] Slider 500, elongated hole 510, insertion hole 520. Detailed Embodiments

[0034] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0035] In the description of the present utility model, it should be understood that with respect to the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as limiting the present utility model.

[0036] In the description of the present utility model, "plurality" means more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0037] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0038] Refer to Figures 1 to 8As shown in the figure, an articulating angle device for a stapler according to an embodiment of the present utility model includes: a stapler jaw 100, a rotating member 200, a sleeve 300, a fixing rod 400, and a slider 500; the stapler jaw 100 is used for anastomosing human tissues. The rotating member 200 is fixedly connected to one end of the stapler jaw 100; an installation block 310 is arranged inside the sleeve 300, and a part of the installation block 310 extends out of the sleeve 300. The sleeve 300 is connected to an electric stapler handle. Both the sleeve 300 and the electric stapler handle are prior arts, and their specific structures and functions will not be elaborated further. The rotating member 200 is rotatably installed at one end of the installation block 310 extending out of the sleeve 300; the stapler jaw 100 is hinged to the sleeve 300. It can be foreseen that the rotation centers of the rotating member 200 and the stapler jaw 100 are coaxial to prevent deformation of the rotating member 200 during rotation. Since the moving direction of the trocar is limited during laparoscopic surgery, the direction change of the stapler jaw 100 is realized through the hinge of the stapler jaw 100, which is convenient for anastomosing human tissues from different directions. The fixing rod 400 is inserted into the installation block 310, and the fixing rod 400 has a first position for fixing the rotating member 200 and a second position separated from the rotating member 200; when the fixing rod 400 fixes the rotating member 200, the stapler jaw 100 and the sleeve 300 cannot rotate relative to each other, and human tissues can be anastomosed. When the fixing rod 400 releases the fixation of the rotating member 200, the stapler jaw 100 can rotate freely. At this time, the included angle between the stapler jaw 100 and the sleeve 300 can be changed by means of gravity or touching other objects. During laparoscopic surgery, the stapler jaw 100 can be bent conveniently. The slider 500 is slidably installed on the installation block 310. A control rod 311 is inserted into the installation block 310. One end of the control rod 311 is connected to the installation block 310, and the slider 500 is used to drive the fixing rod 400 to switch between the first position and the second position. For the convenience of manufacturing and installation, the installation block 310 can be composed of two semi-cylinders, and the control rod 311 and the fixing rod 400 are clamped between the two semi-cylinders. Corresponding strip grooves for the control rod 311 and the fixing rod 400 are provided on the mutually approaching surfaces of the two semi-cylinders.

[0039] Referring to Figure 3 As shown in the figure, it can be understood that the stapler jaw 100 includes a cartridge assembly 110 located at the lower part and an anvil 120 located at the upper part and hinged to the cartridge assembly 110. Suturing staples are arranged inside the cartridge assembly 110. A pusher rod is inserted into the sleeve 300, and a blade is connected to the part of the pusher rod located inside the cartridge assembly 110. While the pusher rod pushes the suturing staples out of the cartridge assembly 110 and cooperates with the anvil 120 to complete the suturing of human tissues, the pusher rod drives the blade to cut the human tissues. The rear part of the cartridge assembly 110 is bolted to the rotating member 200. The specific structure of the stapler jaw 100 is a prior art, so it will not be elaborated further.

[0040] Reference Figures 2 to 8 As shown, it can be understood that one end of the rotating member 200 away from the staple cartridge assembly 110 is provided with an arc shape, and the center of the arc-shaped end coincides with the rotation center of the stapler jaw 100. When the stapler jaw 100 rotates, the distance between the end of the rotating member 200 away from the staple cartridge assembly 110 and the fixed rod 400 remains unchanged. For this purpose, a plurality of grooves 210 are provided at intervals on the end of the rotating member 200 away from the staple cartridge assembly 110. An installation hole 312 is opened at one end of the installation block 310 close to the rotating member 200, and the fixed rod 400 is inserted into the installation hole 312. When the fixed rod 400 is in the first position, the fixed rod 400 extends into the groove 210, and the fixed rod 400 locks the rotating member 200 so that it cannot rotate. When the fixed rod 400 is in the second position, the fixed rod 400 disengages from the groove 210, and at this time the rotating member 200 can rotate. The rotating member 200 and the staple cartridge assembly 110 are fixedly connected. By providing the groove 210 and the fixed rod 400 to fix the rotating member 200, the stapler jaw 100 is not easily shaken when clamping human tissues for cutting and suturing, reducing damage to human tissues.

[0041] Reference Figure 6 、 Figure 7 and Figure 8 As shown, it can be understood that a spring 313 is provided in the installation hole 312. The extending direction of the installation hole 312 is the same as the extending direction of the sleeve 300. One end of the spring 313 abuts against the fixed rod 400, and the other end abuts against the bottom wall of the installation hole 312. The spring 313 is used to push the fixed rod 400 to move towards the rotating member 200. The spring 313 makes the fixed rod 400 not easily shaken when inserted into the groove 210, so that the stapler jaw 100 is not easily shaken when clamping human tissues for cutting and suturing, reducing damage to human tissues.

[0042] Reference Figure 3 and Figure 4 As shown, it can be understood that a rotating shaft 220 is connected to the rotating member 200. A strip-shaped hole 510 for the rotating shaft 220 to be embedded is opened at the center of the slider 500. The rotating shaft 220 can move along the strip-shaped hole 510, and the rotating shaft 220 plays a guiding role for the slider 500. When the slider 500 moves, it can stably drive the fixed rod 400 to move in the installation hole 312. It can be foreseen that in some other embodiments, the rotating shaft 220 is rotatably installed on the installation block 310 to achieve stable rotation, and the axis of the rotating shaft 220 coincides with the rotation axis of the stapler jaw 100. When the control rod 311 drives the slider 500 to move, the rotating shaft 220 moves along the strip-shaped hole 510. At this time, the rotating shaft 220 plays a guiding role for the slider 500. The extending direction of the strip-shaped hole 510 is the same as the extending direction of the installation hole 312, so that when the slider 500 moves along the strip-shaped hole 510, it can stably drive the fixed rod 400 to move in the installation hole 312.

[0043] Reference Figure 5 As shown, it can be understood that the slider 500 is symmetrically provided with two insertion holes 520 with the axis of the sleeve 300 as the center, and two control rods 311 are provided and respectively connected to the two insertion holes 520. The movable direction of the control rod 311 is the same as the extension direction of the sleeve 300. The end of the control rod 311 away from the slider 500 extends to the handle of the electric stapler and is driven by a motor. The driving method is a conventional technical means and will not be described in detail.

[0044] Reference Figure 1 As shown, it can be understood that the nail magazine assembly 110 is hinged on the sleeve 300 by bolts, and the nail magazine assembly 110 and the sleeve 300 are connected by bolts, which has a simple structure and is easy to assemble.

[0045] Reference Figure 3 and Figure 8 As shown, it can be understood that a protrusion 410 that can be embedded in the groove 210 is integrally formed at one end of the fixed rod 400 close to the rotating member 200, and the size of the protrusion 410 is set to a size that can just be completely embedded in the groove 210. The groove 210 and the protrusion 410 are tightly matched, so that the stapler jaws 100 are not easy to shake when clamping human tissue for cutting and suturing, thereby reducing damage to human tissue. The height of the protrusion 410 in the direction perpendicular to the rotation of the rotating member 200 is greater than the height of the rotating member 200. When the slider 500 is away from the stapler jaws 100, it can move to abut against the protrusion 410 to drive the fixed rod 400 compression spring 313 to move backward until the protrusion 410 is completely out of the groove 210.

[0046] Reference Figure 5 As shown, it can be understood that the end of the slider 500 close to the staple cartridge assembly 110 is provided with a chamfer so that the rotating member 200 does not collide with the mounting block 310 during rotation, thereby allowing a larger bending angle between the stapler jaw 100 and the sleeve 300.

[0047] Reference Figure 4 As shown, it can be understood that the angle of the distribution area of ​​the groove 210 on the rotating member 200 is at least 130 degrees. The prior art uses a steering link or two metal sheets to move in opposite directions to drive the stapler jaw 100 and the sleeve 300 to bend. The steering link is rigidly connected and the length of the force arm between the rotating shaft is limited by space, and the ability of the metal sheet to elastically deform is limited. Therefore, the bending angle between the stapler jaw 100 and the sleeve 300 in the prior art can only reach 45 degrees to 60 degrees. The bending angle between the stapler jaw 100 and the sleeve 300 in the present application can be larger.

[0048] Usage steps: When the stapler jaw 100 needs to be bent and anastomosed, the structure inside the electric stapler handle drives the two control rods 311 to move towards the end away from the stapler jaw 100. The control rod 311 drives the slider 500 to move towards the end away from the stapler jaw 100. After the slider 500 moves to contact the protrusion 410, it will drive the fixed rod 400 to compress the spring 313 and move backward until the protrusion 410 completely disengages from the groove 210. At this time, the stapler jaw 100 can rotate freely, and the angle between the stapler jaw 100 and the sleeve 300 can be changed by means of gravity or touching other objects. When the angle between the stapler jaw 100 and the sleeve 300 changes to the required angle, the structure inside the electric stapler handle drives the two control rods 311 to move towards the end close to the stapler jaw 100. The control rod 311 drives the slider 500 to move towards the end close to the stapler jaw 100. The end of the control rod 311 moves towards the end close to the stapler jaw 100 under the drive of the elastic force of the spring 313 until the protrusion 410 at the end of the control rod 311 close to the stapler jaw 100 is embedded in the groove 210. At this time, the rotating part 200 cannot rotate, and the angle between the stapler jaw 100 and the sleeve 300 is locked in the current position.

[0049] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A joint angle device for a stapler, characterized in that: include: Stapler jaws (100); A rotating member (200) fixedly connected to one end of the stapler jaw (100); A sleeve (300), wherein a mounting block (310) is disposed in the sleeve (300), and the rotating member (200) is rotatably mounted on an end of the mounting block (310) extending out of the sleeve (300); a fixing rod (400), the fixing rod (400) having a first position for fixing the rotating member (200) and a second position for being separated from the rotating member (200); A slider (500) is slidably mounted on the mounting block (310); a control rod (311) is inserted into the mounting block (310); one end of the control rod (311) is connected to the mounting block (310); and the slider (500) is used to drive the fixing rod (400) to switch between a first position and a second position.

2. A joint rotation device for a stapler according to claim 1, characterized in that: The stapler jaw (100) comprises a staple cartridge assembly (110) located at the bottom and a staple anvil (120) connected to the staple cartridge assembly (110) and located at the top. The rear of the staple cartridge assembly (110) is bolted to the rotating member (200).

3. A joint rotation device for a stapler according to claim 2, characterized in that: The end of the rotating member (200) away from the nail magazine assembly (110) is arranged in an arc shape, and a plurality of grooves (210) are arranged at intervals on the end of the rotating member (200) away from the nail magazine assembly (110). The mounting block (310) is provided with a mounting hole (312) at one end close to the rotating member (200), and the fixing rod (400) is inserted into the mounting hole (312). When the fixing rod (400) is in the first position, the fixing rod (400) extends into the groove (210), and when the fixing rod (400) is in the second position, the fixing rod (400) is disengaged from the groove (210).

4. A joint rotation device for a stapler according to claim 3, characterized in that: A spring (313) is disposed in the mounting hole (312), one end of the spring (313) abuts against the fixing rod (400), and the other end abuts against the bottom wall of the mounting hole (312), and the spring (313) is used to push the fixing rod (400) to move toward the rotating member (200).

5. A joint rotation device for a stapler according to claim 4, characterized in that: The rotating member (200) is connected to a rotating shaft (220), and a strip-shaped hole (510) for embedding the rotating shaft (220) is provided at the center of the sliding block (500), and the rotating shaft (220) plays a guiding role for the sliding block (500).

6. A joint rotation device for a stapler according to claim 5, characterized in that: The slider (500) is provided with two insertion holes (520) symmetrically with the axis of the sleeve (300) as the center, and two control rods (311) are provided and respectively connected to the two insertion holes (520).

7. A joint rotation device for a stapler according to claim 6, characterized in that: The nail magazine assembly (110) is hinged to the sleeve (300) via bolts.

8. A joint rotation device for a stapler according to claim 7, characterized in that: A protrusion (410) capable of being embedded in the groove (210) is provided at one end of the fixing rod (400) close to the rotating member (200).

9. A joint rotation device for a stapler according to claim 8, characterized in that: One end of the sliding block (500) close to the nail magazine assembly (110) is provided with a chamfer.

10. A joint rotation device for a stapler according to claim 9, characterized in that: The angle of the distribution area of ​​the grooves (210) on the rotating member (200) is at least 130 degrees.

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