Medical digestive tract tube anastomat

Abstract

The present application relates to the technical field of medical devices, in particular to a medical digestive tract tube anastomat, which comprises a handle main body, the front end of the handle main body is fixedly connected with a coaxially arranged nail cartridge pipe, the output end of the handle main body and the inner side of the nail cartridge pipe are throughly provided with a center rod, the front end of the nail cartridge pipe is fixedly connected with a minimally invasive adaptive head shell, the inner side of the head shell is installed with a flexible expansion mechanism for adapting to digestive tracts with different diameters, the outer side of the center rod is movably connected with a clamping shaft, the front end of the clamping shaft is installed with a tissue-protecting nail abutting seat mechanism, which cooperates with a first electric push rod to adapt to the tissue tolerance pressure and output the pushing force, so as to realize the flexible and uniform expansion of the inner wall of the digestive tract, and solve the problem of mucosal damage caused by excessive local stress during the expansion of the prior art; the cutting assembly adopts a passivation blade cooperating with a circumferential rotation cutting mode, which avoids the defect that the traditional linear cutting is easy to tear the tissue, and realizes the non-invasive resection of the redundant tissue.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a medical digestive tract tubular anastomosis device. Background Technology

[0002] In surgical digestive tract reconstruction, tubular anastomoses are the core instruments for achieving rapid and stable connection between two segments of the digestive tract. Their performance directly affects surgical safety and postoperative healing outcomes, making them an important application area for surgical instruments. However, existing medical digestive tract tubular anastomoses still have many technical shortcomings in clinical application that urgently need to be addressed.

[0003] On the one hand, the opening mechanism of existing staplers mostly adopts a rigid support structure or a fixed diameter design, which cannot adaptively adjust according to the differences in the diameter of the digestive tract in different patients and different parts of the digestive tract. Not only is the adaptability poor, but the rigid support is also prone to local stress concentration on the inner wall of the digestive tract, causing problems such as mucosal damage and bleeding. At the same time, when two segments of the digestive tract are joined, the suture surface is prone to wrinkles due to the lack of precise guidance and flat support, resulting in uneven riveting of the staples and increasing the risk of postoperative leakage. On the other hand, the cutting parts of existing staplers mostly adopt a linear cutting design, which is prone to tearing digestive tract tissue during the cutting process, affecting the healing of the anastomosis. Moreover, the excess tissue after cutting is difficult to collect effectively and is prone to remain in the body and cause infection. Therefore, we propose a medical digestive tract tubular stapler. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a medical digestive tract tubular anastomosis device.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a medical digestive tract tube-type stapler, including a handle body, a staple cartridge tube coaxially connected to the front end of the handle body, a central rod penetrating through the output end of the handle body and the inner side of the staple cartridge tube, a quick-release connecting buckle at the front end of the central rod, a minimally invasive adaptable head shell fixedly connected to the front end of the staple cartridge tube, through holes at both the front and rear ends of the head shell, a sliding sealing fit between the inner side of the head shell and the central rod through the through holes, a flexible spreading mechanism for adapting to digestive tracts of different diameters installed on the inner side of the head shell, a snap-fit ​​shaft movably snapped onto the outer side of the central rod, a tissue-protected anvil mechanism installed at the front end of the snap-fit ​​shaft, and a sterile sealing gasket at the connection between the staple cartridge tube and the head shell.

[0006] Preferably, the spreading mechanism includes a radial adjustment component for adaptively adjusting the inner diameter of the digestive tract, and the spreading mechanism also includes an annular cutting component for non-damagingly cutting excess intestinal tissue.

[0007] Preferably, the adjustment assembly includes a front bracket fixedly connected to the inside of the head shell, and two sterilely packaged first electric actuators are symmetrically installed on the inside of the front bracket. The output shaft of the first electric actuator is fixedly connected to a push plate, and a sealing through hole adapted to the central rod is opened at the center position of both the front bracket and the push plate.

[0008] Preferably, the adjustment assembly further includes a rear support fixedly connected to the inner side of the head shell. A closed shell is fixedly connected to the inner side of the rear support. An axially guided rear slide shaft is fixedly connected to the inner side of the closed shell. Multiple slide rods are slidably connected to the outer side of the rear slide shaft through a slide groove. A connecting plate is fixedly connected to the same end of the multiple slide rods. The rear end of the connecting plate is fixedly connected to a push plate. The outer side of the slide rod is slidably connected to the closed shell. A baffle is fixedly connected to the front end of the rear slide shaft. The inner sides of the rear slide shaft and the baffle are slidably connected to the center rod through through holes.

[0009] Preferably, a lower clamping plate is fixedly connected to the outer side of the slide rod, and two connecting rods are rotatably connected to the inner side of the lower clamping plate via a rotating shaft. The other ends of the two connecting rods are rotatably connected to an upper clamping plate via a rotating shaft. An arc-shaped slider is fixedly connected to the outer side of the connecting rod. The outer surface of the arc-shaped slider is covered with a medical-grade silicone flexible pad. The edge of the arc-shaped slider adopts a rounded corner transition design. The arc-shaped slider is slidably connected to the inner side of the closed shell. When the arc-shaped slider is opened, it forms a perfectly circular support surface, and the support diameter range is adapted to the conventional diameter of the adult digestive tract.

[0010] Preferably, the cutting assembly includes two symmetrical second electric actuators, which are installed on the inner side of the rear bracket. The output shafts of the two second electric actuators are fixedly connected to L-shaped pieces, and the two L-shaped pieces are jointly fixedly connected to a toothed ring. The inner wall of the toothed ring is slidably connected to the closed shell, and a sliding groove is provided at the rear end of the toothed ring. A movable frame is slidably connected to the outer side of the toothed ring.

[0011] Preferably, a micro motor is installed at the rear end of the mobile frame, a first gear is rotatably connected to the front end of the mobile frame, the output shaft of the micro motor is fixedly connected to the first gear, the outer side of the first gear is meshed with a gear ring, a support frame is fixedly connected to the outer side of the first gear at the front end of the mobile frame, a third electric push rod is installed at the front end of the support frame, and a passivated blade is fixedly connected to the output shaft of the third electric push rod.

[0012] Preferably, the cutting assembly further includes two mutually symmetrical fourth electric actuators, the output shafts of the two fourth electric actuators are jointly fixedly connected to the outer shell of the staple cartridge body, the staple cartridge body is slidably connected to the inner side of the head shell, the staple cartridge body is provided with medical titanium alloy staples arranged in a ring, and a pressure sensor is installed at the front end of the staple cartridge body.

[0013] Preferably, the anvil mechanism includes an anvil body, the rear end of which is provided with a shaped groove adapted to the anastomosis staple, the rear end of which is fixedly connected to a front sliding shaft, the rear end of which is fixedly connected to a snap-fit ​​shaft, the outer side of which is provided with multiple sets of evenly distributed guide grooves, the inner side of which is rotatably connected to a rotating plate via a rotating shaft, the clamping surface of which is covered with a medical silicone anti-slip pad, and the outer side of which is slidably sealed with a rear sliding shaft and a baffle.

[0014] Preferably, the anvil mechanism further includes a guide rod fixedly connected to the inner side of the front slide groove shaft, a Y-shaped rod slidably connected to the outer side of the guide rod, two racks fixedly connected to the upper end of the Y-shaped rod, a second gear meshing with the lower end of the racks, the inner side of the second gear being fixedly connected to the rotating shaft of the rotating plate, and a fifth electric actuator installed on the inner side of the slide groove of the front slide groove shaft, the output shaft of the fifth electric actuator being fixedly connected to the Y-shaped rod.

[0015] Compared with the prior art, the present invention provides a medical digestive tract tubular anastomosis device, which has the following beneficial effects: 1. Through multi-component collaborative design, tissue damage is avoided throughout the entire process from opening and anastomosis to cutting and retrieval. The medical-grade silicone flexible pad and rounded corner design of the arc-shaped slider in the radial adjustment component, combined with the push output of the first electric actuator adapted to the tissue's tolerance pressure, achieves flexible and uniform opening of the digestive tract wall, solving the problem of excessive local force causing mucosal damage during opening in existing technologies; the cutting component uses a blunt blade combined with a circumferential rotation cutting method, avoiding the defects of traditional straight cutting that easily tears tissue, and achieving non-damaging removal of excess tissue; the pressure sensor at the front end of the staple cartridge body cooperates with the forming groove of the anastomosis seat body to accurately control the tissue clamping pressure, preventing excessive pressure from damaging tissue or insufficient pressure from causing poor anastomosis, and also to form the anastomosis staples into a B-shaped structure, taking into account both tissue riveting stability and smooth blood circulation; the rotating plate of the anastomosis seat mechanism cooperates with the medical-grade silicone anti-slip pad to firmly clamp the cut excess tissue and remove it with the device, completely avoiding the risk of infection caused by tissue residue in the body, and ensuring surgical safety throughout the entire process.

[0016] 2. The coordinated action of the flexible expansion mechanism and the anvil mechanism enables adaptive adaptation and precise alignment for digestive tracts of different diameters. The radial adjustment component drives the arc-shaped slider through a linkage slider mechanism to form a perfectly circular support surface. The expansion range can be flexibly adjusted according to the actual diameter of the digestive tract. Combined with the flexible stretching effect of the anvil body on small-diameter digestive tracts, the purse-string suture surface of both large and small-diameter digestive tracts can remain flat and smooth, solving the problems of limited compatibility with single-diameter tubes and easy wrinkling of the suture surface in existing technologies.

[0017] 3. The coaxial design of the central rod, staple cartridge tube, head shell, and front sliding shaft, combined with the precise transmission of the snap-fit ​​shaft, ensures that the staple seat mechanism and the staple cartridge body move coaxially along the axis, so that the suture surfaces of the two digestive tracts are precisely aligned and tightly fitted, avoiding problems such as anastomosis leakage and poor healing caused by alignment deviations in existing technologies, and significantly improving the quality of anastomosis and postoperative healing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the working end of the present invention; Figure 3 This is a schematic diagram of the overall structure of the spreading mechanism and the anvil mechanism of the present invention; Figure 4 This is a schematic diagram of the overall structure of the adjustment component of the present invention; Figure 5 This is a cross-sectional schematic diagram of the overall structure of the adjustment component of the present invention; Figure 6 This is a cross-sectional view of a portion of the adjusting component of the present invention. Figure 1 ; Figure 7 This is a cross-sectional view of a portion of the adjusting component of the present invention. Figure 2 ; Figure 8 This is a cross-sectional view of a portion of the cutting component of the present invention. Figure 1 ; Figure 9 This is a cross-sectional view of a portion of the cutting component of the present invention. Figure 2 ; Figure 10 This is a cross-sectional view of a portion of the cutting component of the present invention. Figure 3 ; Figure 11 This is a schematic diagram of the overall structure of the anvil mechanism of the present invention; Figure 12 This is a cross-sectional schematic diagram of the overall structure of the anvil mechanism of the present invention; Figure 13 This is a cross-sectional schematic diagram of a portion of the anvil mechanism of the present invention.

[0019] In the diagram: 1. Handle body; 2. Nail cartridge tube; 3. Center rod; 4. Head shell; 5. Spreading mechanism; 51. Adjustment assembly; 511. Front support; 512. First electric actuator; 513. Push plate; 514. Rear support; 515. Enclosed shell; 516. Rear sliding shaft; 517. Slide rod; 518. Connecting plate; 519. Lower clamping plate; 5110. Connecting rod; 5111. Upper clamping plate; 5112. Arc-shaped slider; 5113. Baffle; 52. Cutting assembly; 521. Second electric actuator. 522. Push rod; 523. L-shaped piece; 524. Gear ring; 525. Moving frame; 526. Micro motor; 527. First gear; 528. Support frame; 529. Third electric push rod; 5210. Blunt blade; 5211. Fourth electric push rod; 5211. Staple cartridge body; 6. Staple seat mechanism; 61. Staple seat body; 62. Front slide shaft; 63. Guide rod; 64. Y-shaped rod; 65. Rack; 66. Fifth electric push rod; 67. Second gear; 68. Rotating plate; 7. Snap-fit ​​shaft. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The following electrical components are all electrically connected via an external PLC controller.

[0022] Please see Figures 1-13 A medical digestive tract tube anastomosis device includes a handle body 1, a coaxially arranged staple cartridge 2 fixedly connected to the front end of the handle body 1, a central rod 3 penetrating through the output end of the handle body 1 and the inner side of the staple cartridge 2, a quick-release connecting buckle at the front end of the central rod 3, a minimally invasive adaptable head shell 4 fixedly connected to the front end of the staple cartridge 2, through holes at both the front and rear ends of the head shell 4, the inner side of the head shell 4 slidingly sealingly engaging with the central rod 3 through the through holes, a flexible spreading mechanism 5 for adapting to digestive tracts of different diameters installed on the inner side of the head shell 4, a snap-fit ​​shaft 7 movably snapped onto the outer side of the central rod 3, a tissue-protected anvil mechanism 6 installed at the front end of the snap-fit ​​shaft 7, and a sterile sealing gasket at the connection between the staple cartridge 2 and the head shell 4.

[0023] In this embodiment, the spreading mechanism 5 includes a radial adjustment component 51 for adaptively adjusting the inner diameter of the digestive tract, and the spreading mechanism 5 also includes an annular cutting component 52 for non-damagingly cutting excess intestinal tissue.

[0024] Specifically, the core function of the radial adjustment component 51 is to adaptively achieve radial expansion action according to the different diameters of the digestive tract, so as to keep the inner wall of the digestive tract flat and provide support for the precise alignment and fitting of the two digestive tract segments; the core function of the annular cutting component 52 is to perform non-destructive annular cutting of the excess digestive tract tissue in the inner diameter of the annular anastomosis array after the anastomosis is completed, and at the same time, in conjunction with related components, to collect the cut tissue and avoid tissue residue in the body.

[0025] In this embodiment, the adjustment component 51 includes a front support 511 fixedly connected to the inside of the head shell 4. Two sterile encapsulated first electric push rods 512 are symmetrically installed on the inside of the front support 511. The output shaft of the first electric push rod 512 is fixedly connected to a push plate 513. The center positions of the front support 511 and the push plate 513 are both provided with sealing through holes that are adapted to the center rod 3. The thrust output range of the first electric push rod 512 is adapted to the pressure tolerance of the digestive tract tissue.

[0026] Specifically, the front bracket 511 provides a stable mounting base for the first electric actuator 512, ensuring its coaxiality and stability during operation; the first electric actuator 512 provides axial power output for the opening action of the adjustment component 51, and the aseptic packaging design ensures the sterility of the surgical environment; the push plate 513 is used to synchronously transmit the power of the two first electric actuators 512 to the connecting plate 518, realizing the synchronous action of multiple sets of slide rods 517; the sealing through hole not only ensures the smooth sliding of the central rod 3, but also plays a sealing role to prevent body fluid from entering the internal mechanism.

[0027] In this embodiment, the adjustment assembly 51 further includes a rear support 514 fixedly connected to the inner side of the head shell 4. A closed shell 515 is fixedly connected to the inner side of the rear support 514. An axially guided rear slide shaft 516 is fixedly connected to the inner side of the closed shell 515. Multiple slide rods 517 are slidably connected to the outer side of the rear slide shaft 516 through a slide groove. A connecting plate 518 is fixedly connected to the same end of the multiple slide rods 517. The rear end of the connecting plate 518 is fixedly connected to the push plate 513. The outer side of the slide rods 517 is slidably connected to the closed shell 515. A baffle 5113 is fixedly connected to the front end of the rear slide shaft 516. The inner sides of the rear slide shaft 516 and the baffle 5113 are slidably connected to the center rod 3 through through holes.

[0028] Specifically, the rear bracket 514 is used to fix and install the enclosed shell 515 and related transmission components, forming the rear support structure of the adjustment assembly 51; the enclosed shell 515 is used to house components such as the slide rod 517 and connecting rod 5110, and at the same time provides a guide channel for the radial sliding of the arc-shaped slider 5112, protecting the internal mechanism from contamination by bodily fluids; the rear slide groove shaft 516 provides precise guidance for the axial movement of the slide rod 517 through the outer slide groove, ensuring that the slide rod 517 moves synchronously; the slide rod 517, as the power transmission carrier, connects the connecting plate 518. The axial thrust is transmitted to the lower clamping plate 519, driving the connecting rod 5110 and the arc-shaped slider 5112 to move; the connecting plate 518 realizes the synchronous connection between the push plate 513 and multiple slide rods 517, ensuring the consistency of the movement of all slide rods 517; the baffle 5113 provides axial limit for the arc-shaped slider 5112, so that the axial thrust of the slide rod 517 can be converted into the radial spreading force of the arc-shaped slider 5112; the through hole on the inner side of the rear slide shaft 516 and the baffle 5113 ensure the coaxial sliding of the central rod 3, while maintaining the sealing of the mechanism.

[0029] In this embodiment, a lower clamping plate 519 is fixedly connected to the outer side of the slide rod 517. Two connecting rods 5110 are rotatably connected to the inner side of the lower clamping plate 519 via a rotating shaft. The other ends of the two connecting rods 5110 are rotatably connected to an upper clamping plate 5111 via a rotating shaft. An arc-shaped slider 5112 is fixedly connected to the outer side of the connecting rod 5110. The outer surface of the arc-shaped slider 5112 is covered with a medical silicone flexible pad. The edge of the arc-shaped slider 5112 adopts a rounded corner transition design. The arc-shaped slider 5112 is slidably connected to the inner side of the closed shell 515. When the arc-shaped slider 5112 is open, it forms a perfectly circular support surface. The support diameter range is adapted to the conventional diameter of the adult digestive tract.

[0030] Specifically, the lower clamping plate 519 is used to fix and connect the slide rod 517 and the connecting rod 5110, transmitting the axial movement of the slide rod 517 to the connecting rod 5110; the connecting rod 5110, as a motion conversion component, converts the axial thrust of the slide rod 517 into the radial opening force of the arc-shaped slider 5112, achieving the opening action through its own angle change; the upper clamping plate 5111 is used to connect the connecting rod 5110 and the arc-shaped slider 5112, ensuring that the power of the connecting rod 5110 is stably transmitted to the arc-shaped slider 5112; the arc-shaped slider 5112 is the opening component that directly contacts the inner wall of the digestive tract. The circular support surface formed in the opening state allows the inner wall of the digestive tract to be evenly stressed. The medical-grade silicone flexible pad on the outer surface and the rounded corner transition design at the edges can avoid damage to the digestive tract mucosa during the opening process, achieving flexible opening protection.

[0031] In this embodiment, the cutting assembly 52 includes two symmetrical second electric push rods 521. The second electric push rods 521 are installed on the inner side of the rear bracket 514. The output shafts of the two second electric push rods 521 are fixedly connected to L-shaped pieces 522. The two L-shaped pieces 522 are fixedly connected to a toothed ring 523. The inner wall of the toothed ring 523 is slidably connected to the closed shell 515. A sliding groove is opened at the rear end of the toothed ring 523. A movable frame 524 is slidably connected to the outer side of the toothed ring 523.

[0032] Specifically, the second electric actuator 521 provides power for the axial movement of the gear ring 523, driving the gear ring 523 to move closer to or away from the staple array; the L-shaped plate 522 is used to connect the output shaft of the second electric actuator 521 and the gear ring 523, synchronously transmitting the power of the two second electric actuators 521 to the gear ring 523, ensuring smooth axial movement of the gear ring 523; the gear ring 523 provides a circumferential motion track for the moving frame 524 (through the rear end groove), and meshes with the first gear 526 through its outer tooth surface, providing a transmission basis for the circumferential rotation of the moving frame 524, and the sliding connection between its inner wall and the closed shell 515 ensures the stability of axial movement; the moving frame 524 is used to carry components such as the micro motor 525, the first gear 526, and the support frame 527, and achieves circumferential rotation in the groove of the gear ring 523, driving the cutting component to complete the annular cutting action.

[0033] In this embodiment, a micro motor 525 is installed at the rear end of the movable frame 524, and a first gear 526 is rotatably connected to the front end of the movable frame 524. The output shaft of the micro motor 525 is fixedly connected to the first gear 526. The outer side of the first gear 526 is meshed with a gear ring 523. A support frame 527 is fixedly connected to the outer side of the first gear 526 at the front end of the movable frame 524. A third electric push rod 528 is installed at the front end of the support frame 527. A passivation blade 529 is fixedly connected to the output shaft of the third electric push rod 528.

[0034] Specifically, the micro motor 525 provides rotational power for the circumferential rotation of the moving frame 524, serving as the power source for the cutting action; the first gear 526, through meshing with the gear ring 523, converts the rotational power of the micro motor 525 into the circumferential movement of the moving frame 524 along the groove of the gear ring 523; the support frame 527 is used to fix and install the third electric push rod 528, providing stable support for the cutting components; the third electric push rod 528 is used to adjust the radial position of the blunted blade 529 to adapt to the cutting needs of excess tissue with different inner diameters; the blunted blade 529 adopts a blunted design to avoid tearing digestive tract tissue during the cutting process, achieving non-damaging annular cutting and accurately removing excess tissue within the anastomosis array.

[0035] In this embodiment, the cutting assembly 52 also includes two mutually symmetrical fourth electric push rods 5210. The output shafts of the two fourth electric push rods 5210 are fixedly connected to the outer shell of the staple cartridge body 5211. The staple cartridge body 5211 is slidably connected to the inner side of the head shell 4. The staple cartridge body 5211 is provided with medical titanium alloy staples arranged in a ring. A pressure sensor is installed at the front end of the staple cartridge body 5211.

[0036] Specifically, the fourth electric actuator 5210 provides power for the axial movement of the staple cartridge body 5211, driving the staple cartridge body 5211 to approach the anvil body 61 to clamp the tissue, or to reset and disengage from the tissue; the staple cartridge body 5211 is the component that carries and fires the anastomotic staples. The medical titanium alloy anastomotic staples arranged in a ring inside have good biocompatibility. After firing, they can achieve a stable rivet between two sections of digestive tract tissue. Its sliding connection with the head shell 4 ensures accurate axial movement; the pressure sensor is used to detect the clamping pressure of the staple cartridge body 5211 and the anvil body 61 on the digestive tract tissue in real time, avoiding excessive pressure that damages the tissue or insufficient pressure that leads to anastomosis, thus ensuring the anastomosis effect.

[0037] In this embodiment, the anvil mechanism 6 includes an anvil body 61. The rear end of the anvil body 61 is provided with a shaped groove adapted to the anastomosis staple. The rear end of the anvil body 61 is fixedly connected to a front slide shaft 62. The rear end of the front slide shaft 62 is fixedly connected to a snap-fit ​​shaft 7. Multiple sets of evenly distributed guide slides are provided on the outer side of the front slide shaft 62. The inner side of each slide of the front slide shaft 62 is rotatably connected to a rotating plate 68 via a rotating shaft. The clamping surface of the rotating plate 68 is covered with a medical silicone anti-slip pad. The outer side of the front slide shaft 62 is slidably sealed with the rear slide shaft 516 and the baffle 5113.

[0038] Specifically, the anvil body 61 is used to fit and fix a section of the digestive tract stump. The forming groove at its rear end provides a shaping base for the medical titanium alloy anastomosis staple, allowing the staple to bend into a B-shaped structure after firing, achieving stable tissue riveting. The front sliding shaft 62 is used to connect the anvil body 61 and the snap-fit ​​shaft 7, transmitting the axial power of the central rod 3. On the other hand, it provides installation and rotation space for the rotating plate 68 through the outer guide groove. Its sliding and sealing cooperation with the rear sliding shaft 516 and the baffle 5113 ensures the coaxiality and sealing of the mechanism. The rotating plate 68 is used to clamp the excess digestive tract tissue after cutting, avoiding tissue residue in the body. The medical silicone anti-slip pad layer on the clamping surface can enhance the clamping stability and prevent tissue slippage. The snap-fit ​​shaft 7 realizes the quick snap-fit ​​and power transmission between the central rod 3 and the front sliding shaft 62, ensuring stable transmission connection.

[0039] In this embodiment, the anvil mechanism 6 further includes a guide rod 63 fixedly connected to the inner side of the groove of the front slide shaft 62. A Y-shaped rod 64 is slidably connected to the outer side of the guide rod 63. Two racks 65 are fixedly connected to the upper end of the Y-shaped rod 64. A second gear 67 is meshed with the lower end of the racks 65. The inner side of the second gear 67 is fixedly connected to the rotating shaft of the rotating plate 68. A fifth electric push rod 66 is installed on the inner side of the groove of the front slide shaft 62. The output shaft of the fifth electric push rod 66 is fixedly connected to the Y-shaped rod 64.

[0040] Specifically, guide rod 63 provides precise guidance for the axial sliding of Y-shaped rod 64, ensuring smooth operation of Y-shaped rod 64; Y-shaped rod 64 is used to synchronously connect the fifth electric actuator 66 and the two racks 65, synchronously transmitting the axial power of the fifth electric actuator 66 to the two racks 65; racks 65, through meshing with the second gear 67, convert the axial movement of Y-shaped rod 64 into the rotational power of the second gear 67; the second gear 67 drives the rotating plate 68 to rotate through the rotating shaft, realizing the clamping or releasing action of the rotating plate 68; the fifth electric actuator 66 provides power for the rotational action of the rotating plate 68, and drives the Y-shaped rod 64 to move through the extension and retraction of the output shaft, thereby controlling the opening and closing of the rotating plate 68.

[0041] The working principle is as follows: First, ensure that all components of the device are initially sterile. The sterile sealing gasket at the connection between the staple cartridge 2 and the head shell 4 ensures the sterility of the operating environment. The two digestive tract ends to be anastomosed are respectively placed on the outside of the staple seat body 61 of the staple seat mechanism 6 and the outer wall of the front end of the staple cartridge 2. The two digestive tract ends are fixed by purse-string suture to prevent tissue slippage during the operation. Subsequently, the quick-release connecting buckle at the front end of the central rod 3 is precisely engaged with the snap-fit ​​shaft 7 to ensure stable transmission connection; by rotating the tightening knob on the handle body 1, the axial transmission action of the central rod 3 is used to drive the anvil mechanism 6 and the staple cartridge 2 to move towards each other in the coaxial direction, initially bringing the two layers of digestive tract tissues together. During this process, two sterilely packaged first electric actuators 512 symmetrically installed on the inner side of the front support 511 are activated. The output shaft of the first electric actuator 512 pushes the push plate 513 forward. The push plate 513 drives the connecting plate 518 to move forward synchronously. The connecting plate 518 further drives multiple slide rods 517 to extend forward stably along the slide groove of the rear slide groove shaft 516. The slide rods 517 drive the connecting rods 5110 to move synchronously through the lower clamping plate 519. The connecting rods 5110 pull the upper clamping plate 5111 and the arc surface slider 5112 to move until the front end of the arc surface slider 5112 is tightly fitted with the baffle 5113 to form a limit. At this time, the first electric actuator 512 continues to extend the output shaft, and the axial thrust generated causes the two sets of connecting rods 5110 to gradually change from an oblique position to a vertical position. Through the position change of the connecting rods 5110, the arc-shaped slider 5112 is driven to slide radially out along the inner side of the closed shell 515. Under the guidance of the head shell 4, the medical silicone flexible pad on the outer surface of the arc-shaped slider 5112 is evenly attached to the inner wall of one section of the digestive tract, thereby smoothly opening up the inner wall of that section of the digestive tract and avoiding tissue damage. Next, through the axial transmission of the central rod 3, the snap-fit ​​shaft 7 drives the anvil mechanism 6 and the other fixed digestive tract section to move closer to the opened digestive tract. Under the flexible stretching action of the anvil body 61, the pleats of the purse-string suture surface of the small-diameter digestive tract naturally unfold and open, while the purse-string suture surface of the large-diameter digestive tract remains flat under the support of the arc-shaped slider 5112, so that the purse-string suture surfaces of the two digestive tract sections are precisely aligned and fitted. The gap between the suture surfaces is squeezed tightly by the pressure generated by the opposite movement, ensuring the subsequent anastomosis effect. Then, the first electric push rod 512 is controlled to retract, driving the arc-shaped slider 5112 to return to its radial position along the inner side of the closed shell 515, stopping the opening action on the digestive tract. Afterwards, the two symmetrical fourth electric actuators 5210 inside the rear support 514 are activated. The output shaft of the fourth electric actuator 5210 drives the staple cartridge body 5211 to move forward along the inner side of the head shell 4 until the staple cartridge body 5211 and the rear end of the anvil body 61 clamp the aligned digestive tract tissue together. At this time, the staple cartridge body 5211 is activated, and the medical titanium alloy anastomotic staples arranged in a ring inside are pushed out one by one. After the anastomotic staples penetrate the two layers of tightly attached digestive tract tissue, they undergo plastic deformation in the pre-set forming groove at the rear end of the anvil body 61, bending to form a B-shaped structure. Through the riveting effect of the B-shaped anastomotic staples, a dense ring anastomotic staple array is formed on the tissue, realizing the initial stable connection of the two digestive tract segments. After anastomosis is completed, the fourth electric actuator 5210 is retracted, causing the staple cartridge body 5211 to return to its axial position along the inner side of the head shell 4. The second electric actuator 521 inside the rear support 514 is activated. The output shaft of the second electric actuator 521 drives the toothed ring 523 to extend axially forward along the inner wall of the closed shell 515 through the L-shaped plate 522 until the toothed ring 523 is close to the position of the annular anastomotic staple array. Then, the micro motor 525 installed at the rear end of the moving frame 524 is activated. The output shaft of the micro motor 525 drives the first gear 526 to rotate. Since the first gear 526 is meshed with the toothed ring 523, it drives the moving frame 524 to rotate smoothly in a circular motion along the groove at the rear end of the toothed ring 523. During the rotation of the moving frame 524, the third electric actuator 528 is driven to move synchronously in a circular motion through the support frame 527. After the output shaft of the third electric actuator 528 is adjusted in length, it drives the blunt blade 529 to move. The blunt blade 529 performs a non-damaging annular cut on the excess digestive tract tissue along the inner diameter of the annular anastomotic staple array. During the cutting process, by adjusting the axial position of the central rod 3, the front sliding shaft 62 extends forward a certain distance to form a reserved space, ensuring that the excess digestive tract tissue after cutting can fall to the outside of the front sliding shaft 62; then the fifth electric push rod 66 installed on the inner side of the sliding groove of the front sliding shaft 62 is activated, the output axis of the fifth electric push rod 66 retracts, driving the Y-shaped rod 64 to slide forward along the guide rod 63, and the Y-shaped rod 64 synchronously drives the two racks 65 to move. The racks 65 drive the second gear 67 to rotate through meshing with the second gear 67. When the second gear 67 rotates, it drives the rotating plate 68 to rotate ninety degrees through the rotating shaft, which fits tightly with the rear end of the anvil body 61, thereby firmly clamping the fallen excess digestive tract tissue and preventing tissue from remaining in the body; Subsequently, through the axial transmission of the central rod 3, the anvil mechanism 6 is driven to move closer to the baffle 5113 for resetting; finally, the device is slowly pulled out along the axial direction of the digestive tract, completing the docking operation of the two sections of the digestive tract. At the same time, the clamping action of the rotating plate 68 brings out and removes excess digestive tract tissue. During the retraction of the device, the first electric push rod 512 can be selectively controlled to drive the arc-shaped slider 5112 to open appropriately according to the actual inner diameter and wall condition of the digestive tract. Through the flexible support cooperation between the arc-shaped slider 5112 and the inner wall of the digestive tract, the frictional resistance between the device and the wall during retraction is reduced, the removal speed of the device is accelerated, and the inner wall of the digestive tract is protected from damage.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medical digestive tract tube-type anastomosis device, comprising a handle body (1), characterized in that: The front end of the handle body (1) is fixedly connected to a coaxially arranged staple cartridge tube (2). A central rod (3) is provided through the output end of the handle body (1) and the inner side of the staple cartridge tube (2). The front end of the central rod (3) is provided with a quick-release connecting buckle. The front end of the staple cartridge tube (2) is fixedly connected to a minimally invasive adaptable head shell (4). Both the front and rear ends of the head shell (4) are provided with through holes. The inner side of the head shell (4) is slidably sealed with the central rod (3) through the through holes. The inner side of the head shell (4) is equipped with a flexible opening mechanism (5) for adapting to digestive tracts of different diameters. The outer side of the central rod (3) is movably snapped with a snap-fit ​​shaft (7). The front end of the snap-fit ​​shaft (7) is equipped with a tissue-protecting anti-staple seat mechanism (6). A sterile sealing gasket is provided at the connection between the staple cartridge tube (2) and the head shell (4).

2. The medical digestive tract tubular anastomosis device according to claim 1, characterized in that: The spreading mechanism (5) includes a radial adjustment component (51) for adaptively adjusting the inner diameter of the digestive tract, and the spreading mechanism (5) also includes an annular cutting component (52) for non-invasively cutting excess intestinal tissue.

3. The medical digestive tract tubular anastomosis device according to claim 2, characterized in that: The adjustment assembly (51) includes a front bracket (511) fixedly connected to the inside of the head shell (4). Two sterile-encapsulated first electric push rods (512) are symmetrically installed on the inside of the front bracket (511). The output shaft of the first electric push rod (512) is fixedly connected to a push plate (513). The center positions of the front bracket (511) and the push plate (513) are both provided with sealing through holes that are adapted to the center rod (3).

4. A medical digestive tract tubular anastomosis device according to claim 2, characterized in that: The adjustment assembly (51) also includes a rear support (514) fixedly connected to the inside of the head shell (4). The inner side of the rear support (514) is fixedly connected to a closed shell (515). The inner side of the closed shell (515) is fixedly connected to an axially guided rear slide shaft (516). The outer side of the rear slide shaft (516) is slidably connected to multiple slide rods (517) through a slide groove. The same end of the multiple slide rods (517) is fixedly connected to a connecting plate (518). The rear end of the connecting plate (518) is fixedly connected to a push plate (513). The outer side of the slide rods (517) is slidably connected to the closed shell (515). The front end of the rear slide shaft (516) is fixedly connected to a baffle (5113). The inner sides of the rear slide shaft (516) and the baffle (5113) are slidably connected to the center rod (3) through through holes.

5. A medical digestive tract tubular anastomosis device according to claim 4, characterized in that: The lower clamping plate (519) is fixedly connected to the outer side of the slide rod (517). Two connecting rods (5110) are rotatably connected to the inner side of the lower clamping plate (519) via a rotating shaft. The other ends of the two connecting rods (5110) are rotatably connected to the upper clamping plate (5111) via a rotating shaft. An arc-shaped slider (5112) is fixedly connected to the outer side of the connecting rod (5110). The outer surface of the arc-shaped slider (5112) is covered with a medical silicone flexible pad. The edge of the arc-shaped slider (5112) adopts a rounded corner transition design. The arc-shaped slider (5112) is slidably connected to the inner side of the closed shell (515). The arc-shaped slider (5112) forms a perfectly circular support surface when it is open.

6. A medical digestive tract tubular anastomosis device according to claim 2, characterized in that: The cutting assembly (52) includes two symmetrical second electric actuators (521). The second electric actuators (521) are installed on the inner side of the rear bracket (514). The output shafts of the two second electric actuators (521) are fixedly connected to L-shaped pieces (522). The two L-shaped pieces (522) are fixedly connected to a toothed ring (523). The inner wall of the toothed ring (523) is slidably connected to the closed shell (515). The rear end of the toothed ring (523) is provided with a sliding groove. The outer side of the toothed ring (523) is slidably connected to a movable frame (524).

7. A medical digestive tract tubular anastomosis device according to claim 6, characterized in that: A micro motor (525) is installed at the rear end of the movable frame (524), and a first gear (526) is rotatably connected to the front end of the movable frame (524). The output shaft of the micro motor (525) is fixedly connected to the first gear (526). The outer side of the first gear (526) meshes with a gear ring (523). A support frame (527) is fixedly connected to the outer side of the first gear (526) at the front end of the movable frame (524). A third electric actuator (528) is installed at the front end of the support frame (527). A blunting blade (529) is fixedly connected to the output shaft of the third electric actuator (528).

8. A medical digestive tract tubular anastomosis device according to claim 2, characterized in that: The cutting assembly (52) also includes two mutually symmetrical fourth electric actuators (5210). The output shafts of the two fourth electric actuators (5210) are fixedly connected to the outer shell of the staple cartridge body (5211). The staple cartridge body (5211) is slidably connected to the inner side of the head shell (4). The staple cartridge body (5211) is provided with medical titanium alloy staples arranged in a ring. A pressure sensor is installed at the front end of the staple cartridge body (5211).

9. A medical digestive tract tubular anastomosis device according to claim 1, characterized in that: The anvil mechanism (6) includes an anvil body (61). The rear end of the anvil body (61) is provided with a shaped groove adapted to the anastomosis staple. The rear end of the anvil body (61) is fixedly connected to a front slide shaft (62). The rear end of the front slide shaft (62) is fixedly connected to a snap-fit ​​shaft (7). The outer side of the front slide shaft (62) is provided with multiple sets of evenly distributed guide slides. The inner side of the slides of the front slide shaft (62) is rotatably connected to a rotating plate (68) through a rotating shaft. The clamping surface of the rotating plate (68) is covered with a medical silicone anti-slip pad. The outer side of the front slide shaft (62) is slidably sealed with the rear slide shaft (516) and the baffle (5113).

10. A medical digestive tract tubular anastomosis device according to claim 9, characterized in that: The anvil mechanism (6) further includes a guide rod (63) fixedly connected to the inner side of the groove of the front slide shaft (62). A Y-shaped rod (64) is slidably connected to the outer side of the guide rod (63). Two racks (65) are fixedly connected to the upper end of the Y-shaped rod (64). A second gear (67) is meshed with the lower end of the racks (65). The inner side of the second gear (67) is fixedly connected to the rotating shaft of the rotating plate (68). A fifth electric push rod (66) is installed on the inner side of the groove of the front slide shaft (62). The output shaft of the fifth electric push rod (66) is fixedly connected to the Y-shaped rod (64).

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