CN102688078B - Anastomat and state indicator thereof - Google Patents

Abstract

The present invention relates to a stapler and its state indicating device. The state indicating device includes a closing tab, a firing tab, a closing connecting block, a firing connecting block, a closing pointer, a firing pointer and an indicating plate: closing and firing connecting blocks Both are composed of a rotating shaft and a driving shaft. The upper ends of the rotating shaft are respectively fixed with closing and firing pointers, and the rotating shaft is rotatably connected to the same axis; the closing pull piece is provided with a spring installation structure I and a sliding connection groove of the transmission device, and is connected with the closing connection block. The driving shaft of the firing pull piece is rotatably connected; the firing pull piece is provided with a spring installation structure II and a sliding connection groove of the propulsion device, and is rotatably connected with the driving shaft of the firing connection block. The transmission screw rod of the transmission device of the stapler is connected with the sliding connection groove of the transmission device; the propulsion device is connected with the sliding connection groove of the propulsion device. The present invention can respectively indicate the closing state and the firing state of the stapler, and is provided with an indication of the transition area, which is easier to observe, reduces the operation risk, and is beneficial to the safe and smooth completion of the operation.

Description

A stapler and its state indicating device

technical field

The invention relates to a surgical medical instrument, in particular to a stapler and a state indicating device thereof.

Background technique

In surgical operations, medical staplers have become an indispensable auxiliary medical device in the process of suturing human tissue. Among them, the circular stapler is used for end-to-end, end-to-side, and side-to-side anastomosis in digestive tract lumen surgery. It provides two rows of annular staples spaced from each other. Shaped anastomosis. The application of medical stapler has many advantages such as less blood loss during operation, shorter operation time, reduction of manual operation error, avoidance of infection, and quick recovery of postoperative function.

One of the existing indicating devices for staplers is to process an indicating plate on the driving screw as a pointer, and two different color blocks are set on the pointer to indicate different closed states. When the components clamp the tissue, the pointer will appear in the indication window of the stapler body. The disadvantage of this type of indicating mechanism is that it can only indicate the closed gap, and the pointer on the transmission screw is located in the deep part of the stapler body, and the distance between the indicator window and the stapler body is relatively large, making it difficult to see the exact position of the indication. The other adopts a cam structure, and only two states are displayed. Both of the above two indicating mechanisms can only indicate the clamping thickness between the nail anvil and the staple cartridge assembly, but cannot indicate other important states and positions of the instrument that are convenient for surgical operation, and misfiring is prone to occur, leading to surgical failure.

It can be seen that the above-mentioned existing stapler and its state indicating device obviously still have inconvenience and defects in structure and use, and need to be further improved urgently. How to create a new stapler and its status indicating device that can indicate the closed state and firing state of the stapler separately, and remind the user of the state of the instrument in time, easy to observe, and reduce surgical risks, is an important issue at present. One of the research topics.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stapler and its state indicating device, which can respectively indicate the closed state and firing state of the stapler, and can remind the user of the state of the instrument in time, which is easy to observe and reduces the number of operations. risk, thereby overcoming the deficiencies of the existing stapler and its state indicating device.

In order to solve the above-mentioned technical problems, the present invention provides a status indicating device for a stapler, comprising a closing tab, a firing tab, a closing connection block, a firing connection block, a closing pointer, a firing pointer and an indicator plate, wherein: the closing connection block and the firing The connecting blocks are composed of a rotating shaft and a driving shaft connected at the bottom, and the closing connecting block and the rotating shaft of the firing connecting block are coaxially rotatably connected; the closing pointer and the firing pointer are respectively fixed on the upper ends of the rotating shafts of the closing connecting block and the firing connecting block , the indicator plate is rotatably installed on the upper part of the rotation shaft of the closing connection block and the firing connection block; the indicator plate is respectively provided with a closed and firing state indication pattern printing layer at the corresponding position of the closing pointer and firing pointer activity range; the closing pull tab is provided with The spring installation structure Ⅰ and the sliding connection groove of the transmission device are rotatably connected with the driving shaft of the closing connection block; the firing pull piece is provided with the spring installation structure Ⅱ and the sliding connection groove of the propulsion device, and are rotatably connected with the driving shaft of the firing connection block .

As an improvement of the present invention, the rotating shaft of the closing connecting block is hollow, the rotating shaft of the firing connecting block passes through the inner chamber of the rotating shaft of the closing connecting block, and the indicator disc is rotatably set on the rotating shaft of the closing connecting block .

The closing pull piece is rotatably connected to the drive shaft of the closing connection block through the drive shaft connecting groove arranged at one end thereof, and the spring installation structure I of the closing pull piece is a spring installation column arranged at the other end thereof, and the transmission device slides The slot is provided in the middle of the closure tab.

The firing pull piece is rotatably connected to the drive shaft of the firing connection block through the drive shaft connecting groove arranged at one end thereof, the sliding connection groove of the propulsion device is set at the other end of the firing pull piece, and the spring installation structure II of the firing pull piece is as follows: The snap hook is also arranged in the middle part of the firing pull piece.

A convex lens is fixed above the indicating plate.

The top cross-sections of the closing connection block and the firing connection block are polygonal, and are clamped and fixed with the closing pointer and the firing pointer respectively.

The closed state indication pattern printing layer includes an initial area, a transition area and a closed area; the firing state indication pattern printing layer includes an initial area, a transition area and a firing area.

In addition, the present invention also provides a stapler, including an anvil assembly, a staple cartridge assembly, a propulsion device, a transmission device, a movable handle, a fixed handle, and an adjustment device, and also includes the above-mentioned status indicating device, wherein: the status indicating device The indicator plate of the status indication device is fixedly installed on the fixed handle; the closing pull piece of the status indication device is slidably connected with the transmission device through the sliding joint groove of the transmission device; A return spring is installed between the spring installation structure I of the closing pull piece of the device, the spring installation structure II of the firing pull piece, and the fixed handle.

As a further improvement, the transmission device includes a gap adjustment block, and a protrusion is provided on one side of the gap adjustment block, and the protrusion is slidably connected with the sliding joint groove of the transmission device.

After adopting such a design, the present invention can respectively indicate the closing state and the firing state of the stapler, and set the transition area indication to remind the user of the state of the instrument in time, and install a magnifying convex mirror at the same time, which is easier to observe and reduce It reduces the risk of surgery and is conducive to the safe and smooth completion of surgery, so it is more suitable for popularization and use.

Description of drawings

The above is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a status indicating device of a stapler of the present invention.

Fig. 2 is a schematic top view of the state indicating device of the stapler of the present invention.

Fig. 3 is a schematic structural view of the closing connection block of the status indicating device of the stapler of the present invention.

Fig. 4 is a schematic structural view of the firing connection block of the status indicating device of the stapler of the present invention.

Fig. 5 is a schematic structural view of the closing tab of the status indicating device of the stapler of the present invention.

Fig. 6 is a schematic structural view of the firing tab of the status indicating device of the stapler of the present invention.

Fig. 7 is a schematic diagram of the combined structure of the indicator plate, the pointer and the connecting block of the status indicating device of the present invention.

Fig. 8 is a schematic structural view of the stapler of the present invention.

Fig. 9 is a schematic structural view of the gap adjustment block of the stapler of the present invention.

Fig. 10 is a schematic diagram of the initial state of the state indicating device of the stapler of the present invention.

Fig. 11 is a schematic structural diagram of the closing completion state of the state indicating device of the stapler of the present invention.

Fig. 12 is a schematic structural diagram of the firing completion state of the state indicating device of the stapler of the present invention.

Detailed ways

Please refer to Fig. 1 and Fig. 2, a status indicating device of a stapler of the present invention includes an indicating plate 51, a closing connection block 52, a firing connection block 53, a closing pull tab 54, a firing pull tab 55, a closing pointer 58 and The pointer 57 is fired.

Wherein, the surface of the indicator disc 51 is provided with two indicating areas, which are respectively printed with closing and firing state indicating patterns, and the closed state indicating pattern printing layer may specifically include an initial area, a transition area and a closed area, and the firing state indicating pattern printing layer may also include The initial area, the transition area and the firing area remind the user of each state of the stapler in use, and a convex lens 56 can be installed above the indicator plate 51 for clearly seeing the status indication.

Please refer to Fig. 3 and Fig. 4, the closed connection block 52 is mainly composed of the rotating shaft 521 and the driving shaft 522 connected at the bottom, and the firing connection block 53 is mainly composed of the rotating shaft 532 and the driving shaft 531 connected at the bottom, and the closed connection The block is coaxially and rotatably connected with the rotating shafts 521, 532 of the firing connection block. Specifically, the rotating shaft 521 of the closing connecting block 52 can be designed to be hollow, and the rotating shaft 532 of the firing connecting block passes through the rotating shaft inner cavity 523 of the closing connecting block 52 to realize the connection between the closing connecting block 52 and the firing connecting block 53. Swivel connection. In addition, pointer installation bosses 524 and 533 with polygonal cross-sections can also be designed on the top ends of the closing connection block 52 and the firing connection block 53 .

Please refer to FIG. 5 , the closing pull piece 54 is provided with a spring mounting structure I 543 and a transmission sliding groove 542 , and is rotatably connected to the driving shaft 522 of the closing connecting block 52 . Specifically, the closing pull piece 54 is rotatably connected to the drive shaft 522 of the closing connecting block 52 through the drive shaft connecting groove 541 provided at one end thereof, and the spring installation structure I 543 is arranged at the other end of the closing pull piece 54 as shown in the figure. The spring installation column and the sliding connection groove 542 of the transmission device are arranged in the middle of the closing pull piece 54 .

Please refer to FIG. 6 , the firing pull tab 55 is provided with a spring installation structure II 552 and a sliding connection groove 553 of the propulsion device, and is rotatably connected with the driving shaft 531 of the firing connection block 53 . Specifically, the firing pull piece 55 is rotatably connected to the drive shaft 531 of the firing connection block 53 through the drive shaft connecting groove 551 arranged at one end thereof, and the sliding connection groove 553 of the propulsion device is arranged at the other end of the firing pull piece 55, and the spring is installed Structure II 552 adopts a spring hook as shown in the figure, and is arranged in the middle of the firing pull piece 55 .

Please refer to FIG. 7, the closing pointer 58 is clamped and fixed on the upper end of the rotating shaft 521 of the closing connection block 52 through the pointer installation boss 524, and the firing pointer 57 is fixed on the top of the firing connection block 53 through the pointer installation boss 53. The upper end of the rotating shaft 532 . Indicating disc 1 is rotatably installed on the top of the rotating shafts 521, 532, below the closed pointer 58 and the firing pointer 57, the closed state indication pattern printing layer 512 and the firing state indication pattern printing layer 513 are respectively connected with the closing pointer 58, the firing pointer 57 corresponding to the range of activities.

Please refer to FIG. 8 , a stapler of the present invention includes an anvil assembly 1, a staple cartridge assembly 2, a propulsion device 3, a transmission device 4, a fixed handle 6, a movable handle 7, an adjustment device 8 and the present invention. Status indicating device 5. For convenience, in the following descriptions, the side close to the operator (that is, the right side shown in the figure, the side where the adjustment device is located) will be called the proximal end, and the side away from the operator (that is, the left side shown in the figure) will be called the proximal end. side, the side where the anvil assembly is located) is called the distal end.

Wherein, the nail anvil assembly 1 is connected to the transmission device 4 at the proximal end, the transmission device 4 is movably connected to the adjustment device 8 , the propulsion device 3 extends inside the casing and the fixed handle 6 , and the propulsion device 3 is also connected to the movable handle 7 . The state indicating device 5 is installed in the fixed handle 6 and is located on one side of the transmission device 4 , and the closed and fired state of the instrument can be observed through the convex lens 56 installed on the surface of the fixed handle 6 .

Specifically, the indicator plate 51 and the convex lens 56 of the state indicating device 5 are fixedly installed on the fixed handle 6 , and the closing pull tab 54 and the firing pull tab 55 are movably installed in the fixed handle 6 . The closing pull tab 54 of the state indicating device 5 is slidably connected with the transmission device 4 through the sliding joint groove 542 of the transmission device. Return springs are installed between the spring installation structure I543, the spring installation structure II552 and the fixed handle 6.

Preferably, please refer to Fig. 9, the transmission device 4 of the present invention also includes a gap adjustment block 41, the gap adjustment block 41 is set on the transmission screw rod of the transmission device 4 through the through groove 411, and a protrusion is provided on one side 412 , the protrusion 412 slides in the sliding joint groove 542 of the transmission device, so as to realize the sliding connection between the transmission device and the closing pull piece 54 .

During installation: firstly, the indicator plate 51 is fixedly installed on the fixed handle 6 . The rotation shaft 532 of the firing connection block 53 is inserted into the rotation shaft inner cavity 523 of the closing connection block 52 , and the closing connection block 52 and the firing connection block 53 can rotate relatively. Then insert the upper ends of the matching connecting blocks 52 and 53 into the central hole 511 of the indicator plate 51 , and then install the closing pointer 58 and firing pointer 57 on the corresponding pointer installation bosses 524 and 533 . Finally, the closing pull tab 54 and the firing pull tab 55 are installed.

In the following, red, yellow and green are used to indicate the non-closed (initial) state, transitional state and closed state respectively in the closing indication area, and the non-firing (initial) state, transitional state and firing are respectively used in the firing indication area to represent the non-firing (initial) state, transitional state and firing The completion state is taken as an example to illustrate the specific operation steps of the present invention.

Please refer to FIG. 10 , before the instrument is used, the closed pointer 58 points to the red area, which is the initial state. Rotate the adjusting nut so that the guide shaft of the transmission device 4 is completely exposed, pull out the nail abutment seat assembly 1, and implant it into the tissue at one end of the purse. The circlip tube is connected to the transmission device 4, and the adjustment device is rotated so that the transmission screw rod and the guide shaft connected to it drive the nail anvil assembly 1 toward the side of the staple cartridge assembly 2 until the nail anvil assembly 1 and the staple cartridge assembly 2 with a certain gap.

During this process, the screw rod included in the transmission device 4 and the gap adjustment block 41 fixed on the screw rod move to the end of the adjustment device 8, and the protrusion 412 set on the gap adjustment block 41 is set on the closing pull piece 54. The sliding joint groove 542 of the transmission device slides from one end of the near indicating plate 51 to one end of the far indicating plate until it is opposed to the other end of the sliding joint groove 542 of the closing pull piece 54. During this process, the closing pull piece 54 is not stressed. The closing pointer 58 is always in the red zone.

Please refer to Fig. 11, further tighten the adjusting nut, the screw rod drives the gap adjusting block 41 to move to the tail of the fixed handle 6, the gap adjusting block 41 pulls the closing tab 54 to move to the tail of the fixed handle 6, and the closing tab 54 passes through the closing The connecting block 52 drives the closing pointer 58 from the red area to the yellow area. The yellow area is a safe transition area, reminding the user that the device is about to be closed. Rotate the adjusting nut until the transmission screw rod and the limit block in the fixed handle of the stapler are in contact, and the closing pointer 58 points to the green area, indicating that the instrument has reached the firing gap, and the closing is completed.

After the tissue is closed, open the safety, fasten the movable handle 7 to fire, the movable handle 7 pushes the propulsion device 3 to move forward, and the propulsion device 3 fits inwardly in the sliding joint groove 553 of the firing pull piece 55 through the block 31 provided therein. The proximal end of the trigger moves forward and slides, the firing pull tab 55 is not stressed, and the firing pointer 57 indicates a red area.

Please refer to Fig. 12, further hold the movable handle 7 tightly, the propulsion device 3 drives the firing tab 55 to move to the proximal end of the stapler, and drives the firing pointer 57 to rotate through the firing connection block 53, from the red area to the yellow area, Remind the user that the inner staples of the instrument are about to be fired, and the circular knife is about to cut off the tissue. Hold the movable handle 7 to the bottom, the staples pass through the tissue and enter the nail groove to be formed, and the ring knife cuts off the tissue and the spacer ring together, creating a feeling of falling, and at the same time, the firing pointer 57 reaches the green area from the yellow area. At this time, the closed pointer 58 and the firing pointer 57 are located in the green area at the same time, indicating that the anastomosis of the lumen and organs is completed, and the operation is successfully completed.

When resetting, loosen the movable handle 7, and unscrew the nail anvil assembly 1, the nail anvil assembly 1 withdraws from the human body together with the stapler, the closing pointer 58 and the firing pointer 57 are reset when the closing pull piece 54 and the firing pull piece 55 are reset. Reset under the action of the spring and point to the red area again.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Those skilled in the art make some simple modifications, equivalent changes or modifications by using the technical content disclosed above, all of which fall within the scope of the present invention. within the scope of protection of the invention.

Claims (9)

1. A status indication device for a stapler, characterized in that it comprises a closing pull tab, a firing pull tab, a closing connection block, a firing connection block, a closing pointer, a firing pointer and an indicator plate, wherein: Both the closing connection block and the firing connection block are composed of a rotating shaft and a drive shaft connected at the bottom, and the closing connection block and the firing connection block are coaxially rotatably connected; The closing pointer and the firing pointer are respectively fixed on the upper ends of the rotation shafts of the closing connection block and the firing connection block, and the indicator plate is rotatably installed on the upper parts of the rotation shafts of the closing connection block and the firing connection block; The indication plate is respectively provided with a printed layer of closed and fired state indication patterns at the positions corresponding to the activity ranges of the closed pointer and the fired pointer; The closing pull piece is provided with a spring installation structure I and a sliding connection groove of the transmission device, and is rotatably connected with the drive shaft of the closing connection block; The firing pull piece is provided with a spring installation structure II and a sliding joint groove of the propulsion device, and is rotatably connected with the driving shaft of the firing connection block. 2. A status indicating device for a stapler according to claim 1, characterized in that the rotating shaft of the closed connecting block is hollow, and the rotating shaft of the firing connecting block passes through the inner cavity of the rotating shaft of the closed connecting block, indicating The disc is rotatably set on the upper part of the rotating shaft of the closed connection block. 3. A status indicating device for a stapler according to claim 1, characterized in that the closing pull tab is rotatably connected to the drive shaft of the closing connection block through the drive shaft connecting groove arranged at one end thereof, and the closing pull tab The spring installation structure I of the sheet is a spring installation column arranged at the other end, and the sliding joint groove of the transmission device is arranged in the middle of the closing pull sheet. 4. A status indicating device for a stapler according to claim 1, characterized in that the firing tab is rotatably connected to the driving shaft of the firing connection block through a drive shaft connection groove provided at one end thereof, and the propulsion device The sliding connection groove is arranged at the other end of the firing pull piece, and the spring installation structure II of the firing pull piece is a spring hook and is arranged in the middle of the firing pull piece. 5. A status indicating device for a stapler according to claim 1, characterized in that a convex lens is fixed above the indicating plate. 6. A status indicating device for a stapler according to claim 1, characterized in that the top cross-sections of the closing connection block and the firing connection block are polygonal, and are clamped and fixed with the closing pointer and the firing pointer respectively. 7. A status indication device for a stapler according to claim 1, wherein the closed state indication pattern printing layer includes an initial area, a transition area and a closed area; the firing state indication pattern printing layer includes an initial area, a transition area, and a closed area. Transition zone and firing zone. 8. A stapler comprising an anvil assembly, a staple cartridge assembly, a propulsion device, a transmission device, a movable handle, a fixed handle and an adjustment device, characterized in that it also includes the state described in any one of claims 1-7 indicating device, wherein: The indicator plate of the status indicating device is fixedly installed on the fixed handle; The closing pull tab of the status indicating device is slidably connected with the transmission device through the sliding connection groove of the transmission device; The firing pull piece of the state indicating device is slidably connected with the propulsion device through the sliding joint groove of the propulsion device; Return springs are installed between the spring installation structure I of the closing pull piece of the state indicating device, the spring installation structure II of the firing pull piece and the fixed handle. 9. A stapler according to claim 8, characterized in that the transmission device includes a gap adjustment block, a protrusion is provided on one side of the gap adjustment block, and the protrusion is slidably connected with the sliding groove of the transmission device.