16 results about "Endoscopic stapler" patented technology

The invention relates to an endoscope anastomat with a percussion protection mechanism, a main body is the endoscope anastomat, the far end of the endoscope anastomat is provided with a fixed part and a rotating part, and the rotating part is pivoted with the fixed part; a cutting knife group is also arranged in the endoscope anastomat; the rotating part is a nail propping seat and the fixed part is a nail bin seat, or the rotating part is a nail bin seat and the fixed part is a nail propping seat; a nail bin assembly detachably connected with the nail bin base is arranged on the nail bin base. A nail pushing block which slides forwards and backwards is arranged in the nail bin assembly; the nail pushing block is provided with a limiting part, and when the nail pushing block is located at the initial position, the limiting part extends out of the near end of the nail bin assembly. And a pushing piece is arranged between the rotating part and the fixed part, and the pushing piece always keeps pushing force for pushing towards the direction of the limiting part at the initial position. The nail bin protection device has the beneficial effects that a protection mechanism for an empty nail bin assembly or a protection mechanism for a used nail bin assembly is realized, and potential safety hazards caused by misoperation in actual operation of an operator are solved.

The invention discloses an endoscope nail releasing device and an endoscope anastomat, and the endoscope nail releasing device comprises a seat body, a moving seat, a nail pushing piece, a transmission piece, a push-pull piece and a driving assembly. The transmission piece comprises a switching part and a transmission rod. And one end of the switching part is movably connected with the nail pushing piece. The transmission rod comprises a first transmission part and a second transmission part in sequence, one end of the first transmission part is connected with the other end of the switching part, the first transmission part is located in the installation space and rotatably connected with the supporting part, and the second transmission part is connected with the push-pull piece. The switching part serves as a force transmission hub, the reliability of force transmission between the transmission rod and the nail pushing piece can be guaranteed through a precise connecting structure, the stroke and force needed by nail pushing can be achieved in a limited space, the use reliability of a product is guaranteed, particularly, under the sufficient stroke and large driving force, clamping cannot happen, and the service life of the product is prolonged. Accurate quantitative control over the percussion force is achieved, so that accurate control over the anastomosis nails is achieved, and the suturing effect of products is guaranteed.

The invention discloses a dual-drive handle device and an endoscope anastomat, and the dual-drive handle device comprises a main body, a first force transmission component, a control assembly, a second force transmission component and a drive assembly. The control assembly comprises a rotating piece and a moving piece. The rotating piece is rotatably arranged on the main body; the moving part and the main body are rotationally limited, and the moving part is in threaded connection with the rotating part and connected with one end of the first force transmission component. The rotating part and the moving part form a structure similar to a lead screw, the rotating part is equivalent to a nut, the moving part is equivalent to a screw rod, the rotating part and the moving part are in spiral transmission, and the mechanical property of spiral transmission can convert small rotating torque into large axial driving force, so that a product effectively drives a controlled device. The rotating limiting design of the moving part and the main body has a self-locking effect and is matched with the multi-tooth meshing characteristic of threads, so that the rigidity of the whole structure is good, and the transmission precision and the position stability of the control assembly can be kept.

An endoscopic stapler of the present invention allows for endoscopic approximation of tissue via stapling, avoiding invasive surgical procedures. The endoscopic stapler provides (1) flexibility compared to a traditional surgical stapler; (2) a long instrument (at least 135 cm) enabling the stapling to occur from a long distance as opposed to the short mechanism with today's surgical staplers; (3) a "bending section" allowing the device to reach to its target (often located at an angulation / corner / behind folds / or needing a retroflexed position); (4) small size to allow insertion through the upper esophageal sphincter (the size-limiting point in our field); and, (5) additional channels to facilitate endoscopic procedures including: one or more cameras, one or more accessory channels, suction port, and irrigation port. These features allow for easier and faster approximation of tissue, improve the efficacy of bariatric endoscopy procedures, increase the durability of tissue approximation, and reduce the costs of effective weight loss intervention.

The application provides a disposable guide head for automatically adjusting the volume of a laparoscope anastomat, which is composed of a puncture part and a sleeve part connected with each other, the puncture part is used for shuttling or picking human tissues, the sleeve part is used for sleeving a vice clamp, the puncture part is provided with a first air cavity and a second air cavity arranged at intervals from head to tail; the first air cavity is filled with compressed gas; and a valve is installed between the first air cavity and the second air cavity. The compressed gas makes the first air cavity swell, thereby increasing the volume of the puncture part of the guide head. When the space of the human tissues is too large, the puncture part can be attached to the human tissues, so as to avoid collision with the human tissues; when the pressure of the human tissues is too large, the first air cavity is extruded, the internal air pressure is increased, thereby opening the valve, and the gas in the first air cavity enters the second air cavity; at this time, the space containing the gas is increased, the air pressure is reduced, the volume of the puncture part is reduced, thereby facilitating the guide head to pick the part with excessive pressure of the human tissues.

The present invention relates to a signal transmission structure for an electric laparoscopic stapler and an electric laparoscopic stapler. The signal transmission structure for the electric laparoscopic stapler includes a driving housing, in which a motor and a lead screw connected to the output shaft of the motor are provided. A translation nut is sleeved outside the lead screw, and a sleeve is sleeved outside the translation nut. The sleeve circumferentially limits the rotation of the translation nut. The translation nut can be connected to a cutting knife in various types of anvil assemblies through a firing rod; the sleeve is connected to the driving housing, and a rotating housing is covered outside the sleeve. A conductive slip ring is provided between the outer wall of the sleeve and the inner wall of the rotating housing. The conductive slip ring is respectively connected to the action control end of the cutting knife in the anvil assembly and the main control board for controlling the working state of the motor through signal connection lines on both sides thereof. The present invention solves the technical problems of poor adaptability, cumbersome operation and inconvenient use of laparoscopic staplers.

The present application relates to the technical fields of medical devices, in particular to a needle magazine dismounting device for a suture device and an endoscope suture device, which can meet the working requirements of the endoscope suture device, and realize the quick cooperation and dismounting of the needle magazine and the needle magazine. The needle magazine box is matched with the needle magazine, characterized in that the needle magazine box is formed by the buckling of the upper cover (2) and the lower cover (1) of the needle magazine, the rear end of the needle magazine box is provided with a needle box opening (D-1), the needle magazine box is provided with a needle magazine accommodating cavity, the needle magazine accommodating cavity is arranged along the length direction of the needle magazine box and is communicated with the needle box opening (D-1), the needle magazine box is further provided with a needle magazine or needle magazine dismounting mechanism, the needle magazine or needle magazine dismounting mechanism comprises a needle magazine top pin assembly and a needle magazine top rod assembly, and the needle magazine top pin assembly and the needle magazine top rod assembly are arranged on the two sides of the needle magazine accommodating cavity respectively.

This invention relates to the field of medical device technology, and more particularly to a laparoscopic suture device, comprising a fixed handle, an operating lever mounted on one side of the fixed handle, a movable cover plate disposed on one side of the operating lever, a clamp assembly installed inside the movable cover plate, and an adjustment component disposed on one side of the fixed handle, the adjustment component including a rotating wheel disposed on the top of the fixed handle. This invention, by incorporating a rotating wheel, a swing-rotation switch, and an angle controller, achieves flexible adjustment of the clamp assembly in multiple directions and angles, solving the problems of limited adjustment range and inconvenient operation of existing laparoscopic suture devices, enabling the instrument to better adapt to complex anatomical morphologies; the inclusion of a cover plate toggle and a movable handle improves the convenience of opening, closing, and locking operations; the rounded corner design of the clamp assembly surface reduces sharp edges, improving passability and safety; markings facilitate rapid identification of the suture needle position during surgery, effectively improving suturing accuracy and surgical efficiency.

According to the endoscope anastomat with the percussion protection mechanism, a main body is the endoscope anastomat, a nail pushing block of the endoscope anastomat is provided with a limiting part, and when the nail pushing block is located at the initial position, the limiting part extends out of the near end of a nail bin assembly; the cutting knife group comprises a connecting rod and a cutting knife part located at the front end of the connecting rod, the cutting knife part is rotationally connected to the front end of the connecting rod, an upper boss is arranged on the upper portion of the side face of the cutting knife part, a rib is arranged at the front end of the cutting knife part, and a lower boss is arranged on the lower portion of the side face of the cutting knife part; a guide cavity extending in the front-back direction is formed in a nail abutting base of the endoscope anastomat, an opening communicated with the guide cavity is formed in the rear portion of the anastomosis face of the nail abutting base and used for containing the cutting knife set, and a limiting step used for abutting against the lower boss is formed in the front side of the opening. The hollow nail bin protection mechanism has the advantages that the hollow nail bin protection mechanism is adopted, the original mode that the cutting knife assembly is clamped in a buckling mode is omitted, a new scheme is designed, the influence of large resistance is avoided during percussion, and the stability and reliability of the anastomat are improved.

The present invention relates to the technical field of staplers, and in particular, to an anastomotic stoma reinforcing assembly apparatus and a stapler assembly for minimally invasive surgery. Said apparatus comprises a reinforcing sheet assembly, a first reinforcing sheet support assembly, a second reinforcing sheet support assembly, and a staple cartridge assembly. The reinforcing sheet assembly is mounted at an upper portion of the staple cartridge assembly. The first reinforcing sheet support assembly is arranged inside the reinforcing sheet assembly. The first reinforcing sheet support assembly and the second reinforcing sheet support assembly cooperate to fix the reinforcing sheet assembly on the staple cartridge assembly. The lower end of the first reinforcing sheet support assembly is in clamped connection with the staple cartridge assembly. The upper end of the first reinforcing sheet support assembly is in clamped connection with the second reinforcing sheet support assembly. The present invention can not only ensure the stable connection between the reinforcing sheet assembly and the staple cartridge assembly, but also staple the upper and lower reinforcing sheets into the tissue by means of anastomotic staples, thereby improving the strength of the wound, avoiding bleeding and leakage of the wound, and reducing postoperative complications. The integrated connection between the reinforcing sheet and the endoscopic stapler assembly facilitates operation and reduces application defects caused by the falling, wrinkling, and twisting of the reinforcing sheet.

The present invention discloses a gun barrel assembly and a laparoscopic stapler, wherein the gun barrel assembly comprises a gun barrel body, a stapler seat assembly is installed at the head of the gun barrel body, a knob assembly is installed at the tail, a pull rod is arranged inside the gun barrel body, an angle control member is arranged at the head of the pull rod, the stapler seat assembly is connected to the gun barrel body through the angle control member, a slider assembly is fixed at the tail of the pull rod, the slider assembly is driven to move forward and backward by turning the knob assembly, the slider assembly drives the pull rod to move forward and backward, and the stapler seat assembly is driven to rotate left and right by the forward and backward movement of the pull rod, and the laparoscopic stapler adopts the above-mentioned gun barrel assembly. Through the above-mentioned method, the gun barrel assembly and the laparoscopic stapler of the present invention can manually adjust the anastomosis direction of the head of the laparoscopic stapler, the turning range of the anastomosis head is large, and the anastomosis angle required by the stapler can be intuitively adjusted, so as to solve the anastomosis steering adjustment problem of the gun barrel assembly and the head of the laparoscopic stapler, so that the doctor can easily adjust the anastomosis direction of the stapler assembly.

A needle and suture assembly is provided for use with an endoscopic suturing device with a needle holder arm. The needle assembly includes a needle tip and a needle body. The needle tip has a sharp end. The needle body is tubular and has first and second ends and flexible tab retainers adjacent the second end for retaining the needle body relative to the needle holder arm. The tab retainers elastically deform to allow the needle body to be released from the needle holder arm upon application of force therebetween. The needle body has a suture opening located between the first end and the retainers. A suture extends into the suture opening of the needle body and is fixed therein.

The application provides a single-drive jaw-closing, suture and staple cartridge interchangeable endoscope anastomat, which comprises a staple cartridge assembly, a joint assembly, a cutting knife, a drive sleeve, a closing and cutting drive mechanism and an anastomat shell, the staple cartridge assembly and the joint assembly are connected, the drive sleeve is connected to the front end of the anastomat shell, the closing and cutting drive mechanism is located in the anastomat shell and extends into the drive sleeve, the cutting knife is connected to the execution end of the closing and cutting drive mechanism in the drive sleeve, and the working part of the cutting knife can first force the staple cartridge assembly to close and then fire the staple cartridge while keeping the staple cartridge assembly closed during the forward movement under the drive of the closing and cutting drive mechanism. The endoscope anastomat provided by the application realizes the jaw closing and the staple cartridge firing through only one drive mechanism, and the process of the staple cartridge firing can also directly cut the tissue, so that multiple functions are realized through one drive mechanism, and the drive structure of the anastomat is simplified.

An endoscopic stapler of the present invention allows for endoscopic approximation of tissue via stapling, avoiding invasive surgical procedures. The endoscopic stapler provides (1) flexibility compared to a traditional surgical stapler; (2) a long instrument (at least 135 cm) enabling the stapling to occur from a long distance as opposed to the short mechanism with today's surgical staplers; (3) a "bending section" allowing the device to reach to its target (often located at an angulation / corner / behind folds / or needing a retroflexed position); (4) small size to allow insertion through the upper esophageal sphincter (the size-limiting point in our field); and, (5) additional channels to facilitate endoscopic procedures including: one or more cameras, one or more accessory channels, suction port, and irrigation port. These features allow for easier and faster approximation of tissue, improve the efficacy of bariatric endoscopy procedures, increase the durability of tissue approximation, and reduce the costs of effective weight loss intervention.

The application discloses an endoscope suture device for minimally invasive surgery and belongs to the technical field of medical devices, comprising a mounting piece, a first clamping piece and a second clamping piece arranged on the mounting piece, characterized in that the first clamping piece is used for releasably clamping one end of a suture needle, the second clamping piece is used for releasably clamping the other end of the suture needle, and the first clamping piece and the second clamping piece are of the same structure; the mounting piece is provided with a first driving mechanism for driving the first clamping piece to open and close and a second driving mechanism for driving the second clamping piece to open and close, and the first driving mechanism and the second driving mechanism are of the same structure and are independent of each other. The application has the effects of avoiding instrument collision and interference, reducing the difficulty of two-hand coordination and learning curve, and improving the convenience of operation under a two-dimensional field of view.

Multi-articulated cartridge for endoscopic surgical stapler (mechanically or electrically actuated) with integrated tissue cutting system using an electric field. It allows video or robotic surgery with the creation of stapling lines with a sharp curve (not possible with currently available devices) and automatic cauterisation of the transected tissue, preventing bleeding. Ideal for parenchyma-sparing lung surgeries and for patients at high risk of bleeding. The device features a completely new constructive concept inspired by nature, by means of observation of centipedes and millipedes. The device is very promising for use in uniportal surgeries and natural orifice surgery (NOTES).