CN207804300U - The connection lever fixing apparatus of disposable hysteroscope internal cutting stapler - Google Patents

Abstract

The utility model relates to a connecting rod fixing device for a disposable endoscopic cutting stapler, which is used together with the disposable endoscopic cutting stapler, and is especially suitable for a disposable endoscopic device for applying a line row on the intracavity tissue. Cutting stapler. The connecting rod fixing device of the disposable laparoscopic endoscopic cutting anastomat includes a connecting rod fixing block and a connecting rod; the upper part of the connecting rod is provided with a steering hook sliding groove, the rear end is provided with a rotating head installation groove, and an upper and lower rotating block movable groove, and the middle part is provided with a sliding groove for a steering hook. There are through holes for installing the belt knife rod and the belt blade. The lower part is provided with a blade pressing block installation groove, and the upper front part is provided with a connector installation card slot. The rear part of the connecting rod is fixed on the fixed handle through the connecting rod fixing block.

Description

Connecting rod fixing device for disposable endoscopic cutting stapler

technical field

The utility model relates to a connecting rod fixing device of a disposable endoscopic cutting stapler, which is used in conjunction with the disposable endoscopic cutting stapler, and is especially suitable for a disposable endoscopic device for applying a line row on the endoscopic tissue. Cutting stapler.

Background technique

Traditional surgical operations include cutting, separation, ligation, hemostasis, suturing, and finally achieve the resection of organ lesions and the reconstruction of organs. Mechanical sutures can replace traditional surgery, and the resection and reconstruction of diseased organs can be achieved through the following three basic operations: 1. Partition: that is, using linear sutures to suture organs at a certain distance from the lesion, including solid organs, cavity organs, blood vessels, etc. , and then cut off and remove the diseased organ, or use a linear cutting stapler to complete suture and cut off at one time. 2. The tissues that need to be sutured are combined, and stapled with a linear stapler, for example, a longitudinal suture is cut at the pylorus to complete the pyloroplasty. 3. With the circular stapler, it is very convenient to carry out end-to-end anastomosis and end-to-side anastomosis of cavity organs such as esophagus, stomach, small intestine, and colon. Gastrointestinal side-to-side anastomosis can be performed using a cutting stapler. For example, end-to-end anastomosis of rectocolon, end-to-side esophagus-gastric anastomosis and side-to-side gastrojejunum anastomosis, etc.

During laparoscopic and or endoscopic surgery, the procedure is performed through a small incision in the patient or through a narrow cannula inserted into the wound. In traditional or open procedures, the doctor has direct access to the surgical site. Abdominal surgery has advantages over open surgery due to its reduced patient trauma, shortened patient recovery period, and significantly lower overall costs. To meet the specific needs of endoscopic and intraperitoneal, endoscopic suturing devices have been developed to allow easier access to the surgical site. Typically, these suturing instruments include an articulating tool member supported at the proximal end of the suturing device. The tool component is selectively steerable to enable a physician to manipulate the surgical device in a confined space. These instruments offer significant medical benefits to endoscopic surgery. Nevertheless, improvements in cost reduction and manufacturing complexity are still desired.

At present, in endoscopic endoscopic cutting and stapling devices, both hands are required to operate, and the doctor's operation is not smooth enough, and the interior is made of plastic parts, which are not strong enough, which may cause the failure of the operation.

Therefore still need to further improve it to reduce the required time of surgical procedure, and make it easier to approach the tissue position, strength is stronger, the stapler with jaw suction force is bigger.

Contents of the invention

The purpose of the utility model is to provide a connecting rod fixing device for a disposable endoscopic cutting stapler for the above disadvantages, which is used in conjunction with the disposable endoscopic cutting stapler. It is composed of fixing device, clamping and anastomotic device, clamping and anastomotic assembly steering device, knife pushing device, knife stop safety device, back safety device, fixed handle, reset handle and movable handle assembly. The disposable laparoscopic endoscopic cutting stapler has reasonable design, reasonable structure and convenient use. The transmission structure is all made of metal parts to enhance the transmission strength of the device. The angle of the clamping and anastomotic components can be adjusted at will, and a suitable position for the operation can be easily found during the operation. Through the double locking of the cutting knife and the locking ring, when the jaws are closed, the suction force is greater, which can clamp the tissue more tightly and reduce the risk of surgery caused by the insufficient tightness of the jaws. Disposable endoscopic cutting and stapler can be operated with one hand, making the operation more coherent, freeing up the doctor to hold other instruments, reducing operation time, reducing operation risk, and reducing pain for patients.

The connecting rod fixing device of the disposable endoscopic endoscopic cutting stapler is realized by the following technical scheme:

The connecting rod fixing device of the disposable endoscopic cutting stapler comprises a connecting rod fixing block and a connecting rod. The upper part of the connecting rod is provided with a sliding groove for the steering hook, the rear end is provided with a rotating head installation groove, and the upper and lower rotating block movable grooves, the middle part is provided with a through hole for installing the belt knife rod and belt blade, and the lower part is provided with a blade pressing block installation groove , the upper part of the front is provided with a connecting head installation card slot, and the rear part of the connecting rod is fixedly installed on the fixed handle through the connecting rod fixing block.

The fixed handle is composed of two parts, a left fixed handle and a right fixed handle.

The connecting rod is made of metal material, has a reasonable structure and high strength, and is more suitable for one-handed operation.

working principle:

The connecting rod fixing device of the disposable endoscopic cutting stapler is used together with the disposable endoscopic cutting stapler. During the operation, the jaws of the disposable endoscopic cutting stapler are in the open state. At this time, the safety device Play a role, the limit boss in the lower part of the firing block limit plate in the safety device is stuck on the front end of the triangular limit protrusion on the lower part of the firing block upper cover, preventing the firing block from sliding forward and causing the jaws to close. In the knife stop safety device, the rack safety block is located in the inverted trapezoidal groove in the middle of the transmission rod of the rack limit block. Due to the action of the safety spring, the protrusion at the lower end of the rack safety block is stuck on the rack safety card on the rack. In the groove, prevent the rack from firing forward, and play the role of knife stop insurance.

At this time, the protective cover is removed, and the front end of the disposable endoscopic endoscopic cutting stapler enters the abdominal cavity through the puncture device. , connecting head, connecting rod, and connecting rod fixing block are fixed on the fixed handle, and the movable handle is pulled to drive the block, firing block, sleeve, upper and lower connecting plates, and connecting pipes through the rack to push forward, so that the staple cartridge seat The anvil seat closes and clamps the tissue.

The rack drives the block to push the firing block, the top cover of the firing block slides forward, and the firing block drives the transmission rod of the rack limit block to slide forward. At this time, the rack safety block slides upward from the inverted trapezoidal groove, compressing the safety spring, The protrusion on the lower part of the bar safety block slides from the rack safety card slot on the rack to the upper part of the rack to open the knife stop safety device. Prepare for the next firing.

Simultaneously, the limit boss at the lower part of the firing block limit plate in the anti-retreat safety device slides over the triangular limit protrusion on the lower part of the firing block loam cake, and is positioned at the rear end of the triangular limit protrusion on the lower part of the percussion block loam cake.

Pull the movable handle again, drive the rack, belt knife bar, belt blade, and cutting knife to cut the tissue forward through the rack driving block, and at the same time, the cutting knife pushes the oblique cutting, pushing piece, and staple to anastomose the tissue.

At this time, the firing block limit plate in the anti-retraction insurance is affected by the limit plate spring, and its position moves upward, and the sliding boss on the upper side of the firing block limit plate is in the firing block limit plate sliding groove on the rack. Sliding, the position of the limit boss at the lower part of the firing block limit plate moves up, and blocks the firing block and the upper cover of the firing block to prevent the opening of the jaws caused by the backward movement of the firing block and the upper cover of the firing block. .

Pull the reset handle, pull the cutting knife back through the reset lever, rack, belt knife rod, and belt blade, reset, and open the jaws at the same time, withdraw the front end of the disposable endoscopic cutting stapler from the tissue, and complete the intracavity Cutting and anastomosis surgery.

When the front end of the disposable laparoscopic endoscopic cutting stapler is inserted into the tissue, if the angle is not suitable for firing and needs to be adjusted, you can use your index finger to pull the rotating handle, and pull the steering hook and steering pin block through the up and down rotating block to complete the angle adjustment. Angle adjustment After finishing, the middle finger pulls the movable handle, closes the jaws, and pulls the movable handle again to complete the firing.

The connecting rod fixing device of the disposable endoscopic cutting stapler is used together with the disposable endoscopic cutting stapler. Advantages of the disposable endoscopic cutting stapler:

The existing intra-abdominal cutting staplers are all fixed by the staple cartridge seat, and the staple cartridge seat, staple cartridge, and stapler are all inserted into the tissue when cutting the anastomotic tissue. On the one hand, this part of the instrument is thicker and requires a larger On the other hand, the staples in the staple cartridge are easily taken out by the tissue during insertion, resulting in incomplete anastomosis. However, the disposable endoscopic cutting stapler of the present utility model is fixed by an anvil, which is inserted into the tissue. The anvil is thinner, and the space required for insertion into the tissue is smaller. The contact avoids the risk of incomplete suturing when the tissue is brought out by the staple and the tissue is anastomosed.

Due to the installation of the knife stop safety device, before the firing, it can effectively prevent the reset handle from being accidentally pushed, which drives the rack to slide forward, causing the cutting knife to move and the staples to fall out.

Due to the anti-retraction safety device, the jaws will not be easily closed before firing, and the jaws will not open when firing, which will not cause loose clamping tissue and incomplete anastomosis.

Due to the setting of a movable handle, whether it is adjusting the angle or completing the firing, it can be operated with one hand, so that the doctor can free up his hand to operate other instruments, so that the operation can be completed more smoothly.

Due to the installation of the steering device for the clamping and anastomotic components, during the operation, in the narrow space of the cavity, the angles of the staple magazine and the nail seat at the front end of the disposable endoscopic endoscopic cutting stapler can be adjusted arbitrarily, so that the operation can be completed more smoothly.

The connecting rod fixing device of the utility model is equipped with a connecting rod of metal parts, a connecting head, a steering joint, and a fixed nail seat, and the strength is stronger. When the jaws are closed, the position of the nail seat can be kept unchanged, and the nail magazine The seat is movable and closed, and the rear end is provided with a connecting rod fixing block, which directly fixes the connecting rod on the fixed handle, so that the connecting rod can better maintain a relative positional relationship with the fixed handle.

Description of drawings

Below in conjunction with accompanying drawing, the utility model will be further described:

Fig. 1 is a schematic diagram of the structure of a disposable endoscopic cutting stapler.

Fig. 2 is a schematic structural diagram of a connecting rod fixing device of a disposable endoscopic cutting stapler.

Fig. 3 is a schematic diagram of the structure of the connecting rod of the disposable endoscopic cutting stapler.

Fig. 4 is a schematic structural view of the fixed handle of the disposable endoscopic cutting stapler.

Detailed ways

Referring to accompanying drawings 1-4, the disposable endoscopic cutting stapler includes a connecting rod fixing device, a clamping and anastomotic device, a clamping and anastomotic assembly steering device, a pushing knife device, a knife stop safety device, a backstop safety device, and a fixed handle 24 , reset handle, active handle assembly.

The connecting rod fixing device includes a connecting rod fixing block 34 and a connecting rod 13 . The upper part of the connecting rod 13 is provided with a steering hook sliding groove 13-1, the rear end is provided with a rotating head installation groove 13-2, and the upper and lower rotating block movable grooves 13-3, and the middle part is provided with a through hole 13-4 for installing a knife bar 14 and the band blade 11, the lower part is provided with a band blade pressing block installation groove 13-5, the front upper part is provided with a connector installation card slot 13-6, and the rear part of the connecting rod 13 is fixedly installed on the fixed handle 24 through the connecting rod fixing block 34 .

Described fixed handle 24 is made up of left fixed handle, right fixed handle two parts.

The connecting rod 13 is made of metal material, has a reasonable structure and high strength, and is more suitable for one-handed operation.

The connecting rod fixing device of the disposable endoscopic cutting stapler is used together with the disposable endoscopic cutting stapler. During the operation, the jaws of the disposable endoscopic cutting stapler are in the open state. At this time, the safety device Play a role, the limit boss on the lower part of the firing block limit plate 21 in the safety device is stuck on the front end of the triangular limit protrusion on the lower part of the firing block upper cover 33, preventing the firing block 19 from sliding forward, causing the jaws to sag. closure. In the tool stop safety device, 23 rack safety blocks 23 are located in the inverted trapezoidal groove provided at the middle part of the rack limit block transmission rod 22. Due to the effect of the safety spring 47, the protrusion at the lower end of the rack safety block 23 is stuck on the rack 25. In the rack safety card slot on the top, prevent the rack 25 from firing forward, and play the role of the safety of the knife.

At this time, the protective cover 3 is removed, and the front end of the disposable endoscopic endoscopic cutting stapler enters the abdominal cavity through the puncture device. The nail abutment seat 41 is a fixing device for insertion into the tissue. The nail cartridge seat 42 is installed on the nail abutment seat 41 through the nail abutment seat pin , through the steering joint 39, the connecting head 36, the connecting rod 13, the connecting rod fixed block 34, fixed on the fixed handle 24, pull the movable handle 26, drive the block 30, the firing block 19, the casing 35, and connect up and down through the 30 racks The plate 38 and the connecting pipe 40 are pressed forward, so that the staple cartridge seat 42 closes to the nail abutment seat 41 to clamp the tissue.

The rack drives the block 30 to push the firing block 19 and the top cover 33 of the firing block to slide forward, and the firing block 19 drives the transmission rod 22 of the rack limit block to slide forward. At this time, the rack safety block 23 slides upward from the inverted trapezoidal groove , Compression safety spring 47, the protrusion of rack safety block 23 bottoms slides to the top of tooth bar 25 from the rack safety card slot on the rack 25, and opens the knife stop safety device. Prepare for the next firing.

Simultaneously, the spacer boss at the bottom of the percussion block stop plate 21 in the anti-retreat safety device slides over the triangular spacer projection at the bottom of the percussion block loam cake 33, and is positioned at the rear end of the triangular space stop projection at the percussion block loam cake 33 bottom.

Pull the movable handle 26 again, push the rack 25, the belt knife bar 14, the belt blade 11, and the cutting knife 7 to cut the tissue forward through the rack driving block 30, and at the same time, the cutting knife 7 pushes the oblique cutting 5, the push piece 4, and the staples, Perform anastomosis.

At this time, the firing block limiting plate 21 in the anti-retraction insurance is affected by the action of the limiting plate spring 48, and its position moves upwards, and the sliding boss on the upper side of the firing block limiting plate 21 is limited by the firing block on the rack 25. The plate slides in the sliding groove, and the position of the limit boss at the lower part of the firing block limit plate 21 moves up, and the 19 firing block 19 and the firing block upper cover 33 are blocked to prevent the firing block 19 and the firing block upper cover 33 from moving backward. The jaws are opened to play the role of anti-retraction insurance.

Pull the reset handle 28, pull the cutting knife 7 back through the reset lever 29, the rack 25, the belt knife bar 14, and the belt blade 11, reset, and open the jaws at the same time, and pull the front end of the disposable endoscopic endoscopic cutting stapler out of the tissue. Exit and complete the cutting and anastomosis operation in the cavity.

When the front end of the disposable endoscopic endoscopic cutting stapler is inserted into the tissue, if the angle is not suitable for firing and needs to be adjusted, you can use your index finger to pull the rotating handle 18, and pull the steering hook 15 and the steering pin block 10 through the up and down rotating block 17 to complete the angle adjustment. Adjustment, after the angle is adjusted, the middle finger pulls the movable handle 26, closes the jaws, and pulls the movable handle 26 again to complete the firing.

The utility model relates to a connecting rod fixing device of a disposable endoscopic cutting stapler, which is matched with the disposable endoscopic cutting stapler. The disposable laparoscopic endoscopic cutting stapler is fixed by the anvil, which is inserted into the tissue. The anvil is thinner and requires less space when inserted into the tissue. The staple does not contact the tissue before firing, which avoids tissue damage. There is a risk of incomplete suturing when the staples are brought out and the tissue is anastomosed.

Claims (3)

1. A connecting rod fixing device for cutting anastomats in a disposable endoscope, characterized in that: it comprises a connecting rod fixing block and a connecting rod; And the movable slot of the upper and lower rotating blocks, the middle part is provided with a through hole for installing the belt knife rod and the belt blade, the lower part is provided with the installation slot of the blade pressing block, the upper part of the front is provided with the connector installation card slot, and the rear part of the connecting rod is fixed by the connecting rod The block is fixedly mounted on a fixed handle. 2. The connecting rod fixing device of a disposable endoscopic endoscopic cutting stapler according to claim 1, wherein the fixing handle is composed of a left fixing handle and a right fixing handle. 3. The connecting rod fixing device of a disposable endoscopic endoscopic cutting stapler according to claim 1, wherein the connecting rod is made of metal material.