CN118216967B - Endoscope anastomat with pre-pressing function - Google Patents
Endoscope anastomat with pre-pressing function Download PDFInfo
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- CN118216967B CN118216967B CN202410526773.7A CN202410526773A CN118216967B CN 118216967 B CN118216967 B CN 118216967B CN 202410526773 A CN202410526773 A CN 202410526773A CN 118216967 B CN118216967 B CN 118216967B
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- pressing
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- 239000012528 membrane Substances 0.000 claims description 42
- 230000006870 function Effects 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 12
- 239000002775 capsule Substances 0.000 claims description 10
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000003872 anastomosis Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000968 intestinal effect Effects 0.000 description 16
- 230000009471 action Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011902 gastrointestinal surgery Methods 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000001575 pathological effect Effects 0.000 description 2
- 206010067268 Post procedural infection Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00818—Treatment of the gastro-intestinal system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07285—Stapler heads characterised by its cutter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
- A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a cavity mirror anastomat with a pre-pressing function, which comprises the following components: the gun body comprises a first driving motor and a data processor electrically connected with the first driving motor, wherein an output shaft of the first driving motor is connected with a central rod assembly, and one end of the central rod assembly, which is far away from the first driving motor, is provided with a first screw rod part; the sliding block is connected with the first screw rod part through a first screw rod nut; the execution assembly is fixedly connected to the sliding block, the execution assembly is provided with a pressure sensor electrically connected with the data processor, the sliding block is provided with a pre-pressing position and an anastomotic position, the pre-pressing position is positioned on one side of the anastomotic position, which is close to the gun body, and the first driving motor drives the sliding block to slide to the pre-pressing position or the anastomotic position according to pressure data received by the execution assembly and collected by the pressure sensor. The anastomat of the scheme can improve the effect and the anastomosis degree of the nail anastomosis.
Description
Technical Field
The invention relates to the technical field of anastomat, in particular to a cavity mirror anastomat with a pre-pressing function.
Background
In recent years, advances in minimally invasive surgical instruments have greatly advanced the development of modern surgery. In the field of gastrointestinal surgery, the appearance and popularization of anastomat have promoted gastrointestinal anastomosis to a new stage, and along with the gradual maturation and perfection of mechanical anastomosis technology, mechanical anastomosis has become a main operation means of gastrointestinal surgery. Anastomat can provide greater stability and accuracy for technical operations in some complex operations.
The operation relies on the front end actuating mechanism of the anastomat to mechanically anastomose intestinal tracts, and the operation has higher requirements on the squeezing effect and the stapling connection effect of the actuating mechanism, and meanwhile, the intestinal tracts at two ends need to be ensured to have higher anastomosis degree under different operation conditions. The intestinal anastomat put into use at present has the following problems: insufficient squeezing of intestinal tissues can lead to uneven intestinal surfaces and unsatisfactory intestinal thickness to meet anastomosis conditions, so that after stapling, the stapling effect is unsatisfactory, the postoperative recovery period of a patient is greatly prolonged, and the risk of postoperative infection is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a cavity mirror anastomat with a pre-pressing function, which is used for solving the problems.
The embodiment of the application discloses: an endoscopic stapler with pre-pressing function, comprising:
The gun body comprises a first driving motor and a data processor electrically connected with the first driving motor, wherein an output shaft of the first driving motor is connected with a center rod assembly, and one end of the center rod assembly, which is far away from the first driving motor, is provided with a first screw rod part;
The sliding block is connected with the first screw rod part through a first screw rod nut;
The execution assembly is fixedly connected to the sliding block, the execution assembly is provided with a pressure sensor electrically connected with the data processor, the sliding block is provided with a pre-pressing position and an anastomotic position, the pre-pressing position is positioned on one side, close to the gun body, of the anastomotic position, and the first driving motor drives the sliding block to slide to the pre-pressing position or the anastomotic position according to pressure data received by the execution assembly and collected by the pressure sensor.
Specifically, a second screw rod part is arranged on the central rod assembly, and a polish rod part is arranged between the second screw rod part and the first screw rod part of the central rod assembly; the anastomat further comprises a cutter, one end, close to the execution assembly, of the cutter penetrates through the first screw nut, the other end of the cutter can be connected to the polish rod portion in a sliding mode along an axis, and a second screw nut used for pushing the cutter to move is arranged on the second screw.
Specifically, when the slider is at the pre-pressing position, a preset distance is reserved between the second screw nut and the end part of the cutter.
Specifically, the cutter comprises a plurality of stacked blades, and the blades are made of shape memory alloy.
Specifically, the anastomat comprises a first shell, a second shell and a flexible joint, wherein the first shell is sleeved outside the central rod assembly and is connected with the gun body main body, the second shell is sleeved on the execution assembly, and the flexible joint is used for connecting the first shell and the second shell.
Specifically, the center rod assembly comprises a first rod connected with an output shaft of the first driving motor, a second rod connected with the first rod and a third rod connected to one end of the second rod, which is away from the first rod, wherein the first screw rod is arranged on the third rod, the second screw rod is arranged on the first rod, and the second rod is prepared by adopting a shape memory alloy.
Specifically, one end of the second rod connected with the third rod is provided with a spiral structure.
Specifically, the flexible joint comprises an elastic outer membrane bag and an elastic inner membrane bag arranged inside the elastic outer membrane bag; the elastic outer membrane bag is used for being connected with the first shell and the second shell, and the center rod assembly penetrates through the elastic inner membrane bag; the inner membrane bag comprises an elastic inner membrane bag body and is characterized in that an accommodating cavity for accommodating blocking particles is formed between the outer wall of the elastic inner membrane bag body and the inner wall of the elastic outer membrane bag body, a plurality of air holes are formed in the side wall of the elastic inner membrane bag body, the aperture of each air hole is smaller than the particle size of the blocking particles, and an air pipe used for communicating the accommodating cavity with a negative pressure system is arranged at the end part of the shaft of the elastic inner membrane bag body.
Specifically, the elastic outer membrane bag and the elastic inner membrane bag are integrally formed by silica gel.
Specifically, the inside second driving motor, third driving motor and the pull wire of still being equipped with of rifle body, the one end of pull wire with the output shaft of second driving motor, the other end of pull wire is laid along the rifle body to flexible joint department with flexible joint returns to the inside of rifle body in order with the output shaft of third driving motor after connecting.
The invention has at least the following beneficial effects:
1. According to the anastomat, the pressure sensor arranged on the execution assembly can collect contact pressure data of intestinal tissues on the nail anvil, and is matched with the data processor, the collected data are fed back to form an instruction for controlling the execution assembly to execute opening and closing reciprocating motions, so that a vibration pre-pressing mode is realized, and the pathological intestinal tissues are repeatedly pressed, so that pathological intestinal tissues are more beneficial to discharging tissue liquid, the thickness of the intestinal tissues is obviously reduced, and the effect and the anastomotic degree of the nail anastomosis are improved.
2. The execution assembly and the first shell are connected through the flexible joint, the flexible joint can provide certain bending capacity for the execution assembly through self elasticity, the rigidity of the flexible joint can be improved through the action of blocking particles in the containing cavity under negative pressure, the rigidity changing function is realized, and the stability of the instrument in the use process can be ensured.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the external structure of a endoscopic stapler with a pre-pressing function according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of a endoscopic stapler with a pre-pressing function according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic illustration of an actuator assembly coupled to a center rod assembly by a slider in an embodiment of the present invention;
FIG. 5 is a partial enlarged view at B in FIG. 2;
FIG. 6 is a schematic view of the internal structure of the flexible joint according to the embodiment of the present invention after it is installed;
Fig. 7 is a cross-sectional view of a flexible joint in an embodiment of the invention.
Reference numerals of the above drawings: 1. a gun body main body; 21. a first driving motor; 22. a second driving motor; 23. a third driving motor; 3. a data processor; 41. a first lever; 411. a second screw rod part; 42. a second lever; 421. a polish rod part; 422. a spiral structure; 43. a third lever; 431. a first screw rod part; 5. a slide block; 6. an execution component; 61. a staple cartridge; 62. a nail anvil; 7. a cutter; 81. a first housing; 82. a second housing; 83. a flexible joint; 91. a first lead screw nut; 92. a second lead screw nut; 93. and a sliding ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first feature and the second feature being in direct contact, and may also include both the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes both the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being "below" and obliquely below "the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application.
Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
As shown in fig. 1 to 4, the endoscopic stapler with pre-pressing function of the present embodiment mainly includes: the gun body 1, the execution assembly 6 and the sliding block 5 for connecting the gun body 1 and the execution assembly 6, wherein the working process of the execution assembly 6 is approximately the same as that of the existing anastomat, and the structure thereof is not repeated here. The gun body main body 1 comprises a shell, a first driving motor 21 arranged in the shell and a data processor 3 arranged on the shell and electrically connected with the first driving motor 21. The output shaft of the first driving motor 21 is connected with a central rod assembly, and one end of the central rod assembly, which is far away from the first driving motor 21, is provided with a first screw rod portion 431. The slider 5 is movably connected to the first lead screw portion 431 by a first lead screw nut 91. The actuator assembly 6 is fixedly connected to the slider 5 and moves with the slider 5. The executing component 6 is provided with a pressure sensor electrically connected with the data sensor, specifically, the executing component 6 comprises a nail bin 61 and a nail anvil 62 which are mutually hinged, the pressure sensor is arranged on the nail anvil 62, and the pressure sensor can be a capacitive pressure sensor.
The first drive motor 21 drives the central rod assembly to rotate, and the first screw nut 91 connected to the central rod assembly drives the slider 5 to move in the axial direction. The slide 5 has a pre-pressing position (in which the actuator assembly 6 pre-presses the intestinal tissue, the anvil 62 and the cartridge 61 are not closed enough to allow the staples to be stapled) and an stapling position (in which the anvil 62 and the cartridge 61 are closed enough to allow the staples to be stapled), the pre-pressing position being located on the side of the stapling position close to the body 1 of the gun, in other words, the slide 5 needs to pass the pre-pressing position before continuing to move to the stapling position if the stapler is to realize stapling of the tissue. The first driving mechanism drives the sliding block 5 to slide to a pre-pressing position or an anastomotic position according to pressure data received by the execution assembly 6 collected by the pressure sensor.
Specifically, as the slider 5 moves to the pre-pressing position in a direction away from the gun body 1, the anvil 62 rotates in a direction toward the cartridge 61 to contact the intestinal tissue, and at this time, the pressure sensor provided on the anvil 62 acquires the pressure of the intestinal tissue against the anvil 62 and feeds back to the data processor 3. When the pressure data fed back by the pressure sensor exceeds a preset pressure interval (usually exceeds the upper limit of the pressure interval), the data processor 3 drives the first driving sensor to rotate reversely (the rotating direction of the first driving motor 21 is positive rotation when the sliding block 5 moves away from the gun body 1) so as to drive the sliding block 5 to move along the direction towards the gun body 1, so that the executing assembly 6 executes the opening (the nail anvil 62 rotates along the direction away from the nail bin 61 or has a rotating trend) action. Then, the first driving motor 21 repeatedly drives the executing assembly 6 to execute the closing and opening actions until the pressure data fed back by the pressure sensor reaches the preset pressure interval, and then the first driving motor 21 drives the sliding block 5 to move to the anastomotic position, and the executing assembly 6 executes the formal squeezing action to anastomose intestinal tissues. In the pre-pressing position, the executing component 6 plays a role in vibrating pre-pressing intestinal tissues in the process of repeatedly executing closing and opening actions, and redundant tissue liquid is discharged, so that diseased intestinal tissues become flatter and smaller in thickness, and the executing component 6 is ensured to have a better stapling effect when stapling the intestinal tissues.
As shown in fig. 2 and 3, the stapler of the present embodiment further has a cutter 7, and when the execution unit 6 staples intestinal tissue, the cutter 7 simultaneously cuts the lesion tissue. The manner in which the blade portion of the cutter 7 cooperates with the actuating assembly 6 is the same as that of the conventional stapler and will not be described in detail here.
As shown in fig. 3 to 5, the center rod assembly of the present embodiment is provided with a second screw rod portion 411, and a polish rod portion 421 is provided between the second screw rod portion 411 and the first screw rod portion 431. One end of the cutter 7, which is close to the executing assembly 6, is penetrated in the first screw nut 91, the cutter 7 can move axially relative to the first screw nut 91, specifically, the cutter 7 is penetrated in a limiting hole (not shown) of the first screw nut 91, the limiting hole can guide the cutter 7, and the other end (the end departing from the executing assembly 6) of the cutter 7 is slidably connected to the polish rod 421 through a sliding ring 93. The second screw rod portion 411 is provided with a second screw rod nut 92, and the second screw rod nut 92 is used for pushing the cutter 7 to move. Preferably, when the slide 5 is in the pre-pressing position, the second screw nut 92 is at a predetermined distance from the end of the cutter 7 (close to the second screw nut 92), i.e. the two are not yet in contact with each other. Specifically, when the slider 5 moves to the pre-pressing position along with the first lead screw nut 91 under the driving of the first driving motor 21, since the second lead screw nut 92 is not in contact with the cutter 7 yet, the cutter 7 is not subjected to a sufficient axial force and does not move to the pre-pressing position, at this time, the cutter 7 does not cut the lesion tissue when the performing assembly 6 performs the vibratory pre-pressing because it has not yet reached the pre-pressing position, and as the slider 5 moves further toward the anastomotic position, the second lead screw nut 92 moves to contact with the end of the cutter 7 and pushes the cutter 7 to move toward the performing assembly 6 to perform the cutting action.
As shown in fig. 1 and 6, the stapler of the present embodiment further includes a first housing 81, a second housing 82, and a flexible joint 83. Wherein, the first housing 81 is sleeved outside at least part of the central rod assembly and is connected with the gun body main body 1, the second housing 82 is sleeved on at least part of the actuating assembly 6, and the flexible joint 83 is used for connecting the first housing 81 and the second housing 82. By adopting the scheme, a certain bending allowance can be generated between the execution assembly 6 and the gun body 1, so that the joint rigidity required by operation is provided for an operator, and the operator can conveniently operate the gun body.
Specifically, as shown in fig. 2 and 6, the center rod assembly of the present embodiment includes a first rod 41 connected to the output shaft of the first driving motor 21, a second rod 42 connected to the first rod 41, and a third rod 43 connected to an end of the second rod 42 facing away from the first rod 41. The first screw portion 431 is provided on the third lever 43, the second screw portion 411 is provided on the first lever 41, and the polish rod portion 421 is provided on the second lever 42. Since at least part of the central rod assembly (in this embodiment, part of the second rod 42) and at least part of the cutter 7 are threaded into the flexible joint 83, in order to allow the second rod 42 and the cutter 7 to bend with the flexible joint 83, both the second rod 42 and the cutter 7 of this embodiment are made of a shape memory alloy, which may be a nickel-titanium alloy in particular. Preferably, the cutter 7 includes a plurality of stacked blades, that is, the cutter 7 may be formed by stacking a plurality of thin blades having a small thickness on each other.
Preferably, as shown in fig. 2 and 6, the second rod 42 of the present embodiment is provided with a spiral structure 422 on the outer wall of the end (or the portion of the second rod 42 located in the flexible joint 83) for connecting with the third rod 43, or the end is a hollow spiral tube structure. In this way, the rigidity of the portion can be reduced, the flexibility thereof can be improved, and bending can be conveniently realized. On the other hand, when the second rod 42 rotates under the drive of the first driving motor 21 along with the first rod 41 in the bending state, the spiral tube can perform self-adjustment by generating various displacement modes such as axial displacement, angular displacement, transverse displacement and the like, so that the third rod 43 connected with the threaded tube structure and the executing assembly 6 connected with the third rod 43 are prevented from generating larger amplitude motion, and the operation of the surgeon is prevented from being influenced.
As shown in fig. 6 and 7, the flexible joint 83 of the present embodiment mainly includes an elastic outer membrane capsule and an elastic inner membrane capsule provided inside thereof. The two ends of the elastic outer membrane bag are respectively connected with the first shell 81 and the second shell 82; the elastic inner membrane capsule is hollow and can be penetrated by a central rod assembly (a second rod 42 and a third rod 43). An accommodating cavity is formed between the outer wall of the elastic inner membrane bag and the inner wall of the elastic outer membrane bag in a surrounding mode, and blocking particles are filled in the accommodating cavity. The side wall of the elastic inner membrane bag is also provided with a plurality of air holes, the aperture of each air hole is smaller than the particle size of the blocking particles, and the shaft end part of the elastic inner membrane bag is also connected with an air pipe used for communicating the accommodating cavity and an external negative pressure system. By adopting the scheme, when the external negative pressure system is not opened, the accommodating cavity is in an atmospheric pressure state, the space is larger, the blocking particles are also in a loose state, the distance between every two blocking particles is larger, when the external negative pressure system is opened, the accommodating cavity is in a negative pressure state, the space is smaller, the distance between the blocking particles is smaller, and the friction force between every two blocking particles is rapidly increased, so that the flexible joint 83 is in a rigid state, and provides rigid support for the action of the execution assembly 6 and the cutter 7 and required torque for the first screw rod portion 431.
The occluding particles may be polytetrafluoroethylene particles.
As shown in fig. 7, the elastic outer membrane bladder of this embodiment includes a side wall and end walls connected to both ends of the side wall, and the side wall of the elastic inner membrane bladder is connected to the end walls of the elastic outer membrane bladder. Preferably, the elastic outer membrane capsule and the elastic inner membrane capsule can be integrally formed by silica gel. During forming, the elastic outer membrane bag is formed first, then the blocking particles are filled in the elastic outer membrane bag, and finally the elastic inner membrane bag is formed.
As shown in fig. 2, the stapler of the present embodiment further includes a second driving motor 22, a third driving motor 23 and a traction wire disposed inside the gun body 1. One end of the traction wire is connected with the output shaft of the second driving motor 22, and the other end is arranged to the flexible joint 83 along the gun body main body 1 and connected with the flexible joint 83, and then returns to the interior of the gun body main body 1 to be connected with the output shaft of the third driving motor 23. The second drive motor 22 and the third drive motor 23 are rotated in the opposite directions in synchronization. With the above scheme, when the second driving motor 22 winds the traction wire, the third driving motor 23 releases the traction wire, and at this time, the traction wire can drive the flexible joint 83 to bend towards the preset direction; when the flexible joint 83 is to be bent in the opposite direction, the third drive motor 23 winds up the traction wire and the second drive motor 22 releases the traction wire.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. An endoscopic stapler with pre-pressing function, comprising:
The gun body comprises a first driving motor and a data processor electrically connected with the first driving motor, wherein an output shaft of the first driving motor is connected with a center rod assembly, and one end of the center rod assembly, which is far away from the first driving motor, is provided with a first screw rod part;
The sliding block is connected with the first screw rod part through a first screw rod nut;
The execution assembly is fixedly connected to the sliding block, the execution assembly is provided with a pressure sensor electrically connected with the data processor, the sliding block is provided with a pre-pressing position and an anastomotic position, the pre-pressing position is positioned on one side, close to the gun body, of the anastomotic position, and the first driving motor drives the sliding block to slide to the pre-pressing position or the anastomotic position according to pressure data received by the execution assembly and collected by the pressure sensor.
2. The endoscopic stapler with the pre-pressing function according to claim 1, wherein a second screw rod portion is arranged on the central rod assembly, and a polish rod portion is arranged between the second screw rod portion and the first screw rod portion of the central rod assembly; the anastomat further comprises a cutter, one end, close to the execution assembly, of the cutter penetrates through the first screw nut, the other end of the cutter can be connected to the polish rod portion in a sliding mode along an axis, and a second screw nut used for pushing the cutter to move is arranged on the second screw.
3. The endoscopic stapler with pre-pressing function according to claim 2, wherein when the slider is in the pre-pressing position, a predetermined distance is provided between the second lead screw nut and the end of the cutter.
4. The pre-press function laparoscopic stapler according to claim 2, characterized in that said cutter comprises a plurality of stacked blades, said blades being made of shape memory alloy.
5. The endoscopic stapler with pre-pressing function according to claim 2, wherein the stapler comprises a first housing sleeved outside the central rod assembly and connected to the gun body main body, a second housing sleeved on the executing assembly, and a flexible joint for connecting the first housing and the second housing.
6. The endoscopic stapler with a pre-pressing function according to claim 5, wherein the center rod assembly comprises a first rod connected with an output shaft of the first driving motor, a second rod connected with the first rod, and a third rod connected to one end of the second rod facing away from the first rod, the first screw rod portion is disposed on the third rod, the second screw rod portion is disposed on the first rod, and the second rod is made of a shape memory alloy.
7. The endoscopic stapler with pre-pressing function according to claim 6, wherein an end of the second rod connected to the third rod is provided with a spiral structure.
8. The endoscopic stapler with pre-pressing function according to claim 5, wherein said flexible joint comprises an elastic outer membrane capsule and an elastic inner membrane capsule disposed inside said elastic outer membrane capsule; the elastic outer membrane bag is used for being connected with the first shell and the second shell, and the center rod assembly penetrates through the elastic inner membrane bag; the inner membrane bag comprises an elastic inner membrane bag body and is characterized in that an accommodating cavity for accommodating blocking particles is formed between the outer wall of the elastic inner membrane bag body and the inner wall of the elastic outer membrane bag body, a plurality of air holes are formed in the side wall of the elastic inner membrane bag body, the aperture of each air hole is smaller than the particle size of the blocking particles, and an air pipe used for communicating the accommodating cavity with a negative pressure system is arranged at the end part of the shaft of the elastic inner membrane bag body.
9. The endoscopic stapler with pre-pressing function according to claim 8, wherein the elastic outer membrane capsule and the elastic inner membrane capsule are integrally formed by silica gel.
10. The endoscope anastomat with pre-pressing function according to claim 8, wherein a second driving motor, a third driving motor and a traction wire are further arranged inside the gun body, one end of the traction wire is connected with an output shaft of the second driving motor, and the other end of the traction wire is arranged along the gun body to the flexible joint, is connected with the flexible joint and then returns to the inside of the gun body to be connected with an output shaft of the third driving motor.
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| CN202410526773.7A CN118216967B (en) | 2024-04-29 | 2024-04-29 | Endoscope anastomat with pre-pressing function |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112472177A (en) * | 2020-11-25 | 2021-03-12 | 敏捷医疗科技(苏州)有限公司 | Linear cutting anastomat with pre-pressing tissue thickness feedback prompt function |
| CN112617940A (en) * | 2021-03-09 | 2021-04-09 | 骄英医疗器械(上海)有限公司 | Anastomat capable of implementing prepressing and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114617596A (en) * | 2020-12-11 | 2022-06-14 | 江苏风和医疗器材股份有限公司 | Squeezing time acquisition method and surgical instrument |
| CN114795345A (en) * | 2021-01-28 | 2022-07-29 | 江苏特普优微创医疗科技有限公司 | Double squeezing structure of electric linear cutting anastomat for endoscope |
| CN113796907B (en) * | 2021-09-26 | 2023-09-05 | 赛诺微医疗科技（浙江）有限公司 | Stroke detection structure, control method thereof, electric anastomat and medical equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112472177A (en) * | 2020-11-25 | 2021-03-12 | 敏捷医疗科技(苏州)有限公司 | Linear cutting anastomat with pre-pressing tissue thickness feedback prompt function |
| CN112617940A (en) * | 2021-03-09 | 2021-04-09 | 骄英医疗器械(上海)有限公司 | Anastomat capable of implementing prepressing and control method thereof |
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