CN110403659B - Push rod power assisting mechanism for anastomat and anastomat - Google Patents
Push rod power assisting mechanism for anastomat and anastomat Download PDFInfo
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- CN110403659B CN110403659B CN201910772772.XA CN201910772772A CN110403659B CN 110403659 B CN110403659 B CN 110403659B CN 201910772772 A CN201910772772 A CN 201910772772A CN 110403659 B CN110403659 B CN 110403659B
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- push rod
- rod assembly
- booster
- connecting mechanism
- extending
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- 230000007246 mechanism Effects 0.000 title claims abstract description 151
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- 230000009471 action Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 238000010304 firing Methods 0.000 description 8
- 230000005489 elastic deformation Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010019909 Hernia Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 210000003238 esophagus Anatomy 0.000 description 1
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- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
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- 210000004072 lung Anatomy 0.000 description 1
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- 210000000664 rectum Anatomy 0.000 description 1
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- 239000010936 titanium Substances 0.000 description 1
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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
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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
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
Abstract
The application discloses a push rod power assisting mechanism for an anastomat and the anastomat, which relate to the technical field of medical appliances, and comprise: the device comprises a tube body, a connecting mechanism, a push rod assembly and a booster; the push rod assembly is arranged in the pipe body and can slide in the pipe body; the booster piece is sleeved on the push rod assembly, one end of the booster piece is fixed on the connecting mechanism, and the other end of the booster piece is fixed on the pipe body; the power assisting piece comprises a top wall, a bottom wall, a plurality of first extending parts and a plurality of second extending parts, wherein gaps are formed between the adjacent first extending parts, and gaps are formed between the adjacent second extending parts; the booster cannot be compressed or stretched in the direction of extension of the top wall or the bottom wall. After the connecting mechanism swings, the push rod assembly can move along one side of the connecting mechanism swings under the action of the tail pushing force, and the push rod assembly positioned at the connecting mechanism does not bulge or bulge in a bending way in the opposite direction of the rotation of the connecting mechanism.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a push rod power assisting mechanism for an anastomat and the anastomat.
Background
The anastomat is a special device for replacing manual suturing in medicine, and the main working principle is to utilize titanium nails and the like to anastomose tissues and to utilize a cutter to separate tissues. According to the application scope, the utility model can be mainly divided into a skin anastomat, a digestive tract (esophagus, stomach, etc.) circular anastomat, a rectum anastomat, a circular hemorrhoid anastomat, a circumcision anastomat, a blood vessel anastomat, a hernia anastomat, a lung cutting suture instrument, etc.
The swinging head of the traditional endoscope cutting anastomat is realized through the elastic deformation of the push rod assembly, and an assisting mechanism is needed at the elastic deformation position of the push rod assembly, and the assisting mechanism has the function of providing a stable channel for the deformation of the push rod assembly. The power assisting mechanism in most anastomat at present is to install two metal sheets at two sides of a push rod assembly to maintain the stability of elastic deformation of the deformation position of the push rod assembly. Under the design, the limitation of the swing angle and the excessive swing force required can be caused in the swing process due to the limitation of the material characteristics of the metal sheet. After the connecting mechanism rotates and is in the head-swinging state, as the push rod assembly at the head-swinging position of the connecting mechanism is in a bending state, in the firing process of the anastomat, namely, the push rod assembly needs to be pushed from the tail to move towards one side of the head-swinging direction of the connecting mechanism, the push rod assembly cannot move towards the connecting mechanism after rotation due to elastic deformation, the push rod assembly can move towards the straight line direction of the push rod assembly under the action of the tail pushing force, and further the bulge of bending of the push rod assembly at the connecting mechanism towards the opposite direction of the rotation of the connecting mechanism is more serious, and the head of the push rod assembly cannot move forwards. In this way, the anastomat can not normally complete the firing process or the firing process may need larger firing force to force the head of the push rod assembly to be pushed forward after the bulge, and the bulge bending under the operation of the push rod assembly may be broken when the bulge bending under the operation of the push rod assembly is serious to a certain extent. In either case, the head of the push rod assembly cannot drive the cutter to move forward to perform cutting operation.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, an object of the present application is to provide a push rod booster mechanism for an anastomat and an anastomat, which can move a push rod assembly along a swinging end of a connecting mechanism under the action of a tail pushing force after the connecting mechanism swings, without bending bulge of the push rod assembly located at the connecting mechanism in a direction opposite to the rotation direction of the connecting mechanism.
The specific technical scheme of the embodiment of the application is as follows:
a push rod assist mechanism for a stapler, the push rod assist mechanism for a stapler comprising: the device comprises a tube body, a connecting mechanism capable of rotating relative to the tube body, a push rod assembly and a booster; the push rod assembly is arranged in the pipe body and can slide in the pipe body; the power assisting piece is sleeved on the push rod assembly, one end of the power assisting piece is fixed on the connecting mechanism, and the other end of the power assisting piece is fixed on the pipe body; the booster comprises a top wall, a bottom wall, a plurality of first extending parts which are positioned at one side of the push rod assembly and are connected with the top wall and the bottom wall, and a plurality of second extending parts which are positioned at the other side of the push rod assembly and are connected with the top wall and the bottom wall, a gap is arranged between every two adjacent first extending parts, and a gap is arranged between every two adjacent second extending parts, so that the booster can be bent towards one side of the first extending parts and/or one side of the second extending parts; the booster cannot be compressed or stretched in the extending direction of the top wall or the bottom wall.
Preferably, the booster member is bent to the first extension portion side in a first swing state after the connecting mechanism rotates to one side, and when the push rod assembly is pushed to the connecting mechanism, the second extension portion of the booster member abuts against the side wall of the push rod assembly and enables the push rod assembly positioned at the booster member to slide towards the rotating side of the connecting mechanism;
when the push rod assembly is pushed to the connecting mechanism, the first extension part of the power assisting piece props against the side wall of the push rod assembly and enables the push rod assembly at the power assisting piece to slide towards the other side of the connecting mechanism.
Preferably, the booster is made of a plastic material.
Preferably, the extending direction of the first extending portion is perpendicular to the extending direction of the pipe body.
Preferably, the extending direction of the second extending portion is perpendicular to the extending direction of the pipe body.
Preferably, the extending direction of the first extending portion is in a non-perpendicular state to the extending direction of the pipe body, and a projection of the first extending portion formed on the bottom wall or the top wall in the perpendicular direction meets or partially overlaps with a projection of an adjacent first extending portion formed on the bottom wall or the top wall in the perpendicular direction.
Preferably, the extending direction of the second extending portion is in a non-perpendicular state to the extending direction of the pipe body, and a projection of the second extending portion formed on the bottom wall or the top wall in the perpendicular direction meets or partially overlaps with a projection of an adjacent second extending portion formed on the bottom wall or the top wall in the perpendicular direction.
Preferably, the connecting mechanism is provided with a first clamping part, one end of the power assisting piece is provided with a second clamping part, and the second clamping part can be clamped with the first clamping part, so that one end of the power assisting piece is fixedly connected to the connecting mechanism; the pipe body is provided with a third clamping part, the other end of the power assisting piece is provided with a fourth clamping part, and the fourth clamping part can be clamped with the third clamping part, so that the other end of the power assisting piece is fixed on the pipe body.
Preferably, the push rod assembly is at least partially penetrated in the connecting mechanism; the two sides of the connecting mechanism, which face one end of the pipe body, are provided with supporting parts, and when the connecting mechanism swings, the supporting parts can prop against the power assisting piece to limit the push-type knife rod assembly.
A stapler comprising a push rod assist mechanism for a stapler as described in any one of the preceding claims.
The technical scheme of the application has the following remarkable beneficial effects:
when coupling mechanism rotates in order to swing the head, coupling mechanism drives the push rod subassembly of coupling mechanism department also can have certain crooked degree, because the both ends of helping hand spare are fixed with coupling mechanism and body respectively, the helping hand spare cover is established on push rod subassembly, have the clearance between the adjacent first extension, have the clearance between the adjacent second extension, the clearance of helping hand spare between the curved inboard extension of push rod subassembly can be easily compressed and reduced, the clearance of helping hand spare between the curved outside extension of push rod subassembly can be easily tensile increase, through above-mentioned process, helping hand spare can to first extension one side and/or second extension one side is crooked, its own can reach the crooked degree to the matching with push rod subassembly. Secondly, when the push rod assembly moves towards the push rod assembly in a straight line direction under the action of the tail pushing force, the push rod assembly at the connecting mechanism cannot bend and bulge towards the opposite direction of the rotation of the connecting mechanism. Therefore, after the connecting mechanism swings, the push rod assembly can only move forwards along one side of the connecting mechanism swings under the action of the tail pushing force, and the push rod assembly at the connecting mechanism does not bulge or bulge in a bending way in the opposite direction of the rotation of the connecting mechanism. Once the push rod assembly does not bulge towards the bending of the opposite direction of the rotation of the connecting mechanism, the gap between the extending parts of the power assisting piece on the inner side of the bending of the push rod assembly can be easily compressed and reduced, the gap between the extending parts of the power assisting piece on the outer side of the bending of the push rod assembly can be easily stretched and enlarged, the resistance of the side wall of the power assisting piece on the push rod assembly can be reduced in the bending process, so that the forward pushing process of the push rod assembly at the swinging position of the connecting mechanism is smoother in the firing process of the stapler, the required swinging force can be reduced, and the steering swinging angle of the connecting mechanism can be further lifted.
Specific embodiments of the application are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the application are not limited in scope thereby. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present application, and are not particularly limited. Those skilled in the art with access to the teachings of the present application can select a variety of possible shapes and scale sizes to practice the present application as the case may be.
FIG. 1 is a schematic perspective view of a push rod assist mechanism for a stapler in accordance with an embodiment of the present application;
FIG. 2 is a top view of a push rod assist mechanism for a stapler in accordance with an embodiment of the present application;
FIG. 3 is an enlarged schematic view of the attachment of the power assisting element to the connecting mechanism and the pipe body in the embodiment of the application;
FIG. 4 is a schematic diagram of the connecting mechanism according to the embodiment of the present application when swinging;
FIG. 5 is a schematic view of a first embodiment of a power assisting element according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a booster according to a second embodiment of the present application.
Reference numerals of the above drawings:
1. a connecting mechanism; 11. a first clamping part; 12. a support part; 2. a tube body; 21. a third clamping part; 3. a push rod assembly; 4. a booster; 41. a first extension; 42. a second extension; 43. a top wall; 44. a bottom wall; 45. a second clamping part; 46. a fourth clamping part; 5. a base block.
Detailed Description
The details of the application will be more clearly understood in conjunction with the accompanying drawings and description of specific embodiments of the application. However, the specific embodiments of the application described herein are for the purpose of illustration only and are not to be construed as limiting the application in any way. Given the teachings of the present application, one of ordinary skill in the related art will contemplate any possible modification based on the present application, and such should be considered to be within the scope of the present application. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, may be in communication with each other in two elements, may be directly connected, or may be indirectly connected through an intermediary, and the specific meaning of the terms may be understood by those of ordinary skill in the art in view of the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In order to enable the push rod assembly to move along the swinging head side of the connecting mechanism under the action of the tail pushing force without bulge bending in the opposite direction of the rotation of the connecting mechanism, a push rod power assisting mechanism for a anastomat is provided in the present application, fig. 1 is a schematic perspective view of the push rod power assisting mechanism for the anastomat in the embodiment of the present application after being cut away, fig. 2 is a schematic top view of the push rod power assisting mechanism for the anastomat in the embodiment of the present application, fig. 5 is a schematic structural view of a power assisting member in the first embodiment of the present application, and fig. 6 is a schematic structural view of the power assisting member in the second embodiment of the present application, as shown in fig. 1, fig. 2, fig. 5 and fig. 6, the push rod power assisting mechanism for the anastomat may include: the device comprises a pipe body 2, a connecting mechanism 1 capable of rotating relative to the pipe body 2, a push rod assembly 3 and a booster 4; the cutter pushing rod assembly 3 is arranged in the pipe body 2 and can slide in the pipe body 2; the booster piece 4 is sleeved on the push rod assembly 3, one end of the booster piece 4 is fixed on the connecting mechanism 1, and the other end of the booster piece 4 is fixed on the pipe body 2; the booster 4 comprises at least a top wall 43, a bottom wall 44, a plurality of first extending parts 41 connecting the top wall 43 and the bottom wall 44 on one side of the push rod assembly 3, a plurality of second extending parts 42 connecting the top wall 43 and the bottom wall 44 on the other side of the push rod assembly 3, a gap is arranged between adjacent first extending parts 41, and a gap is arranged between adjacent second extending parts 42, so that the booster 4 can be bent towards one side of the first extending parts 41 and/or one side of the second extending parts 42; the booster 4 cannot be compressed or stretched in the extending direction of the top wall 43 or the bottom wall 44.
In the first swing state after the connecting mechanism 1 rotates to one side, the booster 4 bends to the first extension part 41 side, and when the push rod assembly 3 pushes towards the connecting mechanism 1, the second extension part 42 of the booster 4 butts against the side wall of the push rod assembly 3 and enables the push rod assembly 3 positioned at the booster 4 to slide towards the rotating side of the connecting mechanism 1. In the second swing state after the connecting mechanism 1 rotates to the other side, the booster 4 bends to one side of the second extension part 42, and when the push rod assembly 3 pushes to the connecting mechanism 1, the first extension part 41 of the booster 4 abuts against the side wall of the push rod assembly 3 and makes the push rod assembly 3 located at the booster 4 slide towards the other side where the connecting mechanism 1 rotates.
When the connecting mechanism 1 rotates to swing the head, the connecting mechanism 1 drives the push rod assembly 3 at the connecting mechanism 1 to have a certain bending degree, because the two ends of the booster 4 are respectively fixed with the connecting mechanism 1 and the pipe body 2, the booster 4 is sleeved on the push rod assembly 3, a gap is formed between the adjacent first extending parts 41, a gap is formed between the adjacent second extending parts 42, the gap between the extending parts of the booster 4 at the inner side of the bending of the push rod assembly 3 can be easily compressed and reduced, the gap between the extending parts of the booster 4 at the outer side of the bending of the push rod assembly 3 can be easily stretched and increased, and by the process, the booster 4 can bend towards one side of the first extending parts 41 and/or one side of the second extending parts 42, and can reach the bending degree matched with the push rod assembly. Secondly, when the push rod assembly 3 moves in the straight direction of the push rod assembly 3 under the action of the tail pushing force, the push rod assembly 3 located at the connecting mechanism 1 cannot bend and bulge in the opposite direction of the rotation of the connecting mechanism 1, because the booster 4 has a top wall 43 and a bottom wall 44, the booster 4 cannot be compressed or stretched in the extending direction of the top wall 43 or the bottom wall 44, and both ends of the booster 4 are respectively fixed with the connecting mechanism 1 and the pipe body 2, therefore, the length and the position of the booster 4 are fixed, the length of the booster 4 cannot be increased, and thus the bulge and bulge cannot be achieved only by increasing the length of the booster 4, or cannot move forward or backward at will under the driving of the push rod assembly 3, and both sides of the booster 4 have a first extension part 41 and a second extension part 42, which can support the side walls of the booster 3, so that the booster 3 can be bent according to the bending degree of the booster 4, the bulge and bulge of the booster 3 cannot be limited by the connecting mechanism 1, and cannot be rotated by the connecting mechanism 1. Therefore, after the connecting mechanism 1 swings, the push rod assembly 3 can only move forward along the swinging side of the connecting mechanism 1 under the action of the tail pushing force, and the push rod assembly 3 at the connecting mechanism 1 does not bulge and bulge in the bending direction of the opposite rotating direction of the connecting mechanism 1. Once the push rod assembly 3 does not bulge and bulge in the opposite direction of rotation of the connecting mechanism 1, the gap between the extending parts of the power assisting piece 4 on the inner side of the bending of the push rod assembly 3 can be easily compressed and reduced, the gap between the extending parts of the power assisting piece 4 on the outer side of the bending of the push rod assembly 3 can be easily stretched and enlarged, the resistance of the side wall of the power assisting piece 4 on the push rod assembly 3 under the bending can be also reduced, so that the forward pushing process of the push rod assembly 3 at the head swinging position of the connecting mechanism 1 is smoother in the firing process of the stapler, the required head swinging force can be reduced, and the steering head swinging angle of the connecting mechanism 1 can be further lifted.
In order to better understand the push rod booster mechanism for a stapler of the present application, it will be further explained and illustrated below. As shown in fig. 1, the push rod assembly 3 is disposed in the pipe body 2, a base block 5 is disposed at the right end of the push rod assembly 3, the base block 5 is also disposed in the pipe body 2, and the base block 5 is used for limiting the push rod assembly 3 in the middle of the pipe body 2, so as to play a role in centralizing, and prevent the tail of the push rod assembly 3 from deflecting to a certain side. The push rod assembly 3 can slide in the extending direction of the extending tube body 2 in the tube body 2, and in general, the tail part, i.e. the right end, of the push rod assembly 3 is pushed, so that the push rod assembly 3 moves towards the head part, i.e. the left end, of the push rod assembly 3, and then one end of the head part of the push rod assembly 3 moves towards the connecting mechanism 1 side. The left end of the pipe body 2 is provided with a connecting mechanism 1, fig. 4 is a schematic diagram of the connecting mechanism in the embodiment of the application when the connecting mechanism swings, as shown in fig. 2 and 4, the connecting mechanism 1 can rotate relative to the pipe body 2, after the connecting mechanism 1 rotates to two sides, the connecting mechanism 1 is in a swinging state, and the push rod assembly 3 at least partially penetrates through the connecting mechanism 1, so that the connecting mechanism 1 drives the push rod assembly 3 to rotate in the swinging state, and the push rod assembly 3 at the connecting mechanism 1 is bent, and therefore, the push rod assembly 3 also has a certain bending degree. In the first swing state after the connection mechanism 1 rotates to one side, as shown in fig. 4, the connection mechanism 1 rotates to the right side, the booster 4 is bent to the first extension portion 41 side, when the push rod assembly 3 pushes towards the connection mechanism 1, the second extension portion 42 of the booster 4 abuts against the side wall of the push rod assembly 3 and makes the push rod assembly 3 located at the booster 4 slide towards the rotation side of the connection mechanism 1, otherwise, the head of the push rod assembly 3 may not move forward (downward in the drawing), and under the thrust of the tail of the push rod assembly 3, the push rod assembly 3 at the connection mechanism 1 cannot move forward and moves towards the left side, so that the bent portion of the push rod assembly 3 bulges further to the left and lower side to offset the forward moving distance of the tail of the push rod assembly 3.
Similarly, in the second swing state after the connection mechanism 1 rotates to the other side, the connection mechanism 1 rotates to the left side, the booster 4 bends to the second extension portion 42 side, and when the push rod assembly 3 pushes to the connection mechanism 1, the first extension portion 41 of the booster 4 abuts against the side wall of the push rod assembly 3 and makes the push rod assembly 3 located at the booster 4 slide towards the other side where the connection mechanism 1 rotates.
The left end of the connecting mechanism 1 is used for installing a nail anvil and a nail bin frame (not shown in the figure), and a nail bin is arranged on the nail bin frame. The cartridge housing can be closed or opened relative to the anvil. By the swinging rotation of the connecting mechanism 1, the swinging rotation of the nail anvil and the nail cartridge frame relative to the tube body 2 is realized.
Fig. 3 is an enlarged schematic view of a fixing position of a booster, a connecting mechanism and a pipe body in the embodiment of the present application, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the booster 4 is sleeved on the push rod assembly 3, one end of the booster 4 is fixed on the connecting mechanism 1, and the other end of the booster 4 is fixed on the pipe body 2. Specifically, the booster 4 is sleeved at a place where the push rod assembly 3 bends when the connecting mechanism 1 drives the push rod assembly 3 to bend. The connecting mechanism 1 may have a first clamping portion 11, and one end of the booster 4 near the connecting mechanism 1 has a second clamping portion 45, where the second clamping portion 45 can be clamped with the first clamping portion 11. The first clamping part 11 can be a groove, a bayonet, a step and the like which can clamp the booster 4, the structure of the second clamping part 45 is matched with that of the first clamping part 11, and one end of the booster 4 is fixedly connected to the connecting mechanism 1 in the above manner so as to prevent the booster 4 from sliding along the extending direction of the push rod assembly 3. The inner side wall of the pipe body 2 may have a third clamping portion 21, the outer side of the other end of the booster 4 may have a fourth clamping portion 46, and the fourth clamping portion 46 may be engaged with the third clamping portion 21. The third clamping portion 21 may be a groove, a bayonet, a step, or the like, capable of clamping the booster 4, and the fourth clamping portion 46 may be configured to match with the third clamping portion 2121, so that one end of the booster 4 is fixedly connected to the pipe body 2 in the above manner, so as to prevent the booster 4 from sliding along the extending direction of the push rod assembly 3. The auxiliary piece 4 can be prevented from moving along with the push rod assembly 3 by fixing the auxiliary piece 4, so that the aim that the push rod assembly 3 moves along the swinging head side of the connecting mechanism 1 under the action of tail pushing force cannot be avoided.
As shown in fig. 5 to 6, the middle portion of the booster 4 may include at least a plurality of first extensions 41 located at one side of the push rod assembly 3, a plurality of second extensions 42 located at the other side of the push rod assembly 3, a top wall 43, and a bottom wall 44. The upper end of the first extension 41 and the upper end of the second extension 42 are connected by a top wall 43, and the lower end of the first extension 41 and the lower end of the second extension 42 are connected by a bottom wall 44. The first extension 41, the second extension 42, the top wall 43 and the bottom wall 44 are substantially attached to the wall surface of the push rod assembly 3, the distance between the first extension 41 and the second extension 42 is substantially equal to the thickness of the push rod assembly 3, and the distance between the top wall 43 and the bottom wall 44 is substantially equal to the height of the push rod assembly 3. The booster 4 may be made of a plastic material in such a way that the top wall 43 and the bottom wall 44 have a certain stiffness, the booster 4 being incompressible or tensile in the direction of extension of the top wall 43 or the bottom wall 44. Secondly, the first extension part 41 and the second extension part 42 have supporting function on the side wall of the push rod assembly 3, and the first extension part 41 and the second extension part 42 cannot have elastic deformation, so that the push rod assembly 3 can be prevented from bending and bulging in the opposite direction of the rotation of the connecting mechanism 1, and the break of the push rod assembly 3 possibly caused when the bending and bulging of the push rod assembly 3 at the connecting mechanism 1 is serious to a certain extent is avoided.
As shown in fig. 5 to 6, there is a gap between adjacent first extension portions 41 and a gap between adjacent second extension portions 42. By the structure, the gap between the extending parts of the booster 4 on the inner side of the bending of the push rod assembly 3 can be easily compressed and reduced, so that the problem that a large swinging force is required to be applied to overcome the force of extrusion between the extending parts when the extending parts are extruded mutually to cause bending is avoided. The gap between the extension parts of the booster 4 at the outer side of the bending of the push rod assembly 3 can be easily stretched and increased, so that the problem that a large swinging force is required to be applied to overcome the stretching force of the extension parts when the extension parts are stretched to cause bending is avoided. Meanwhile, the inner side and the outer side of the power assisting piece 4 can not generate excessive pressure on the push rod assembly 3, so that excessive friction force can not be caused on the push rod assembly 3, the power assisting piece 4 can naturally and smoothly deform along the steering direction of the connecting mechanism 1, the required swing force can be reduced, and the steering swing angle can be further improved. In addition, in the firing process of the anastomat, the pushing force required by the forward pushing of the pushing knife rod assembly 3 at the swinging position of the connecting mechanism 1 is smaller, and the pushing process is smoother.
In one possible embodiment, as shown in fig. 5, the extending direction of the first extending portion 41 may be perpendicular to the extending direction of the pipe body 2. The extending direction of the second extending portion 42 may be perpendicular to the extending direction of the tube 2. In this way, the degree to which the gap between the booster 4 and the curved inner extension of the push rod assembly 3 can be compressed is greatest, the required yaw force is smallest, and the degree of lift of the steering yaw angle is greatest.
In one possible embodiment, as shown in fig. 6, the extending direction of the first extending portion 41 is in a non-perpendicular state to the extending direction of the tube body 2, and the projection of the first extending portion 41 formed on the bottom wall 44 or the top wall 43 in the perpendicular direction meets or partially overlaps with the projection of the adjacent first extending portion 41 formed on the bottom wall 44 or the top wall 43 in the perpendicular direction. The extending direction of the second extending portion 42 is in a non-perpendicular state to the extending direction of the tube body 2, and a projection of the second extending portion 42 formed on the bottom wall 44 or the top wall 43 in the perpendicular direction meets or partially overlaps with a projection of the adjacent second extending portion 42 formed on the bottom wall 44 or the top wall 43 in the perpendicular direction. In this way, the first extension portion 41 and the second extension portion 42 support the side wall of the push rod assembly 3 at any position in the extension direction of the push rod assembly 3, so that the different first extension portion 41 or second extension portion 42 can provide sufficient support for the different positions of the bulge of the push rod assembly 3, which is bent towards the opposite direction of the rotation of the connecting mechanism 1, and the bulge of the bulge, which is bent towards the opposite direction of the rotation of the connecting mechanism 1, can not occur at the gap of the extension portions, so that the swinging head and the firing process can be smoother. In the above manner, the possibility that the push rod assembly 3 will be bulged to be bent in the opposite direction of rotation of the link mechanism 1 is minimized.
As shown in fig. 4, the two sides of the end of the connecting mechanism 1 facing the pipe body 2 are provided with supporting parts 12, and the supporting parts 12 only need to be smooth, such as arc-shaped, without obvious edges. When the connecting mechanism 1 swings, for example, the connecting mechanism 1 swings to the maximum extent, the supporting portion 12 can abut against the power assisting piece 4 so that the bending of the push rod assembly 3 is more flexible and smooth, and bending caused by overlarge bending degree at a part or a point is avoided. In the above process, the smoother supporting portion 12 can be attached to the curved assisting member 4, so as to increase the contact surface, thereby supporting the assisting member 4, further compensating the supporting force of the extending portion of the assisting member 4, and further more effectively forming the supporting force of the assisting member 4 on the side wall of the push rod assembly 3, so that the push rod assembly 3 is prevented from bending due to overlarge bending degree under the condition of maximum bending deformation degree.
The application also provides an anastomat, which can comprise the push rod power assisting mechanism for the anastomat.
All articles and references, including patent applications and publications, disclosed herein are incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not substantially affect the essential novel features of the combination. The use of the terms "comprises" or "comprising" to describe combinations of elements, components, or steps herein also contemplates embodiments consisting essentially of such elements, components, or steps. By using the term "may" herein, it is intended that any attribute described as "may" be included is optional. Multiple elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, component, section or step is not intended to exclude other elements, components, sections or steps.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. The above embodiments are provided to illustrate the technical concept and features of the present application and are intended to enable those skilled in the art to understand the content of the present application and implement the same, and are not intended to limit the scope of the present application. All equivalent changes or modifications made in accordance with the spirit of the present application should be construed to be included in the scope of the present application.
Claims (8)
1. A push rod booster mechanism for a stapler, the push rod booster mechanism for a stapler comprising: the device comprises a tube body, a connecting mechanism capable of rotating relative to the tube body, a push rod assembly and a booster; the push rod assembly is arranged in the pipe body and can slide in the pipe body; the power assisting piece is sleeved on the push rod assembly, one end of the power assisting piece is fixed on the connecting mechanism, and the other end of the power assisting piece is fixed on the pipe body; the booster comprises a top wall, a bottom wall, a plurality of first extending parts which are positioned at one side of the push rod assembly and are connected with the top wall and the bottom wall, and a plurality of second extending parts which are positioned at the other side of the push rod assembly and are connected with the top wall and the bottom wall, a gap is arranged between every two adjacent first extending parts, and a gap is arranged between every two adjacent second extending parts, so that the booster can be bent towards one side of the first extending parts and/or one side of the second extending parts; the booster cannot be compressed or stretched in the extending direction of the top wall or the bottom wall;
when the push rod assembly is pushed to the connecting mechanism, the second extension part of the power assisting piece abuts against the side wall of the push rod assembly and enables the push rod assembly at the power assisting piece to slide towards the rotating side of the connecting mechanism; when the connecting mechanism is in a first swinging state, the rotating direction of the connecting mechanism is towards one side where the first extending part is located;
when the push rod assembly is pushed to the connecting mechanism, the first extension part of the power assisting piece props against the side wall of the push rod assembly and enables the push rod assembly positioned at the power assisting piece to slide towards the other side of the rotation of the connecting mechanism; when the connecting mechanism is in the second swinging state, the rotating direction of the connecting mechanism is towards one side where the second extending part is located;
the push rod assembly is at least partially arranged in the connecting mechanism in a penetrating way; the two sides of the connecting mechanism, which face one end of the pipe body, are provided with supporting parts, and when the connecting mechanism swings, the supporting parts can prop against the booster piece to limit the push rod assembly;
the other end of the power assisting piece is connected with the third clamping part arranged on the pipe body in a clamping way through the fourth clamping part arranged on the power assisting piece, so that the power assisting piece is accommodated in the pipe body.
2. A push rod booster mechanism for a stapler according to claim 1, wherein said booster is made of a plastic material.
3. The push rod booster mechanism for a stapler according to claim 1, wherein the extending direction of the first extension portion is perpendicular to the extending direction of the tube body.
4. The push rod booster mechanism for a stapler according to claim 1, wherein the extending direction of the second extension portion is perpendicular to the extending direction of the tube body.
5. The push rod booster mechanism for a stapler according to claim 1, wherein the extending direction of the first extending portion is in a non-perpendicular state to the extending direction of the tubular body, and a projection of the first extending portion formed on the bottom wall or the top wall in the perpendicular direction meets or partially overlaps with a projection of an adjacent first extending portion formed on the bottom wall or the top wall in the perpendicular direction.
6. The push rod booster mechanism for a stapler according to claim 1, wherein the extending direction of the second extending portion is in a non-perpendicular state to the extending direction of the tubular body, and a projection of the second extending portion formed on the bottom wall or the top wall in the perpendicular direction meets or partially overlaps with a projection of an adjacent second extending portion formed on the bottom wall or the top wall in the perpendicular direction.
7. The push rod booster mechanism for an anastomat of claim 1, wherein the connecting mechanism is provided with a first clamping part, one end of the booster is provided with a second clamping part, and the second clamping part can be clamped with the first clamping part so that one end of the booster is fixedly connected with the connecting mechanism.
8. A stapler comprising a push rod assistance mechanism for a stapler according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772772.XA CN110403659B (en) | 2019-08-21 | 2019-08-21 | Push rod power assisting mechanism for anastomat and anastomat |
| PCT/CN2020/109090 WO2021031989A1 (en) | 2019-08-21 | 2020-08-14 | Cutter push rod assisting mechanism for use in anastomat, and anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772772.XA CN110403659B (en) | 2019-08-21 | 2019-08-21 | Push rod power assisting mechanism for anastomat and anastomat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110403659A CN110403659A (en) | 2019-11-05 |
| CN110403659B true CN110403659B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910772772.XA Active CN110403659B (en) | 2019-08-21 | 2019-08-21 | Push rod power assisting mechanism for anastomat and anastomat |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110403659B (en) |
| WO (1) | WO2021031989A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403659B (en) * | 2019-08-21 | 2023-11-24 | 康奇舒宁(苏州)医疗科技有限公司 | Push rod power assisting mechanism for anastomat and anastomat |
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|---|---|---|---|---|
| CN1726874A (en) * | 2004-07-28 | 2006-02-01 | 伊西康内外科公司 | Electroactive polymer-based articulation mechanism for grasper |
| CN104207811A (en) * | 2014-09-30 | 2014-12-17 | 山东威瑞外科医用制品有限公司 | Disposable intra-cavity cutting anastomat |
| CN205234555U (en) * | 2015-12-21 | 2016-05-18 | 苏州天臣国际医疗科技有限公司 | Device is cut with seam to chamber mirror surgery operation |
| CN107106172A (en) * | 2014-12-18 | 2017-08-29 | 伊西康有限责任公司 | Include the surgical instrument assemblies of flexible joint kinematic system |
| CN208838054U (en) * | 2018-06-06 | 2019-05-10 | 重庆西山科技股份有限公司 | Stapler push blade bent support mechanism |
| CN210843258U (en) * | 2019-08-21 | 2020-06-26 | 康奇舒宁(苏州)医疗科技有限公司 | Push-type broach rod assisting mechanism for anastomat and anastomat |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007257754A1 (en) * | 2006-06-08 | 2007-12-21 | Bannerman, Brett | Medical device with articulating shaft |
| US9597074B2 (en) * | 2013-08-15 | 2017-03-21 | Ethicon Endo-Surgery, Llc | Endoluminal stapler with rotating wheel cam for multi-staple firing |
| CN110403659B (en) * | 2019-08-21 | 2023-11-24 | 康奇舒宁(苏州)医疗科技有限公司 | Push rod power assisting mechanism for anastomat and anastomat |
-
2019
- 2019-08-21 CN CN201910772772.XA patent/CN110403659B/en active Active
-
2020
- 2020-08-14 WO PCT/CN2020/109090 patent/WO2021031989A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1726874A (en) * | 2004-07-28 | 2006-02-01 | 伊西康内外科公司 | Electroactive polymer-based articulation mechanism for grasper |
| CN104207811A (en) * | 2014-09-30 | 2014-12-17 | 山东威瑞外科医用制品有限公司 | Disposable intra-cavity cutting anastomat |
| CN107106172A (en) * | 2014-12-18 | 2017-08-29 | 伊西康有限责任公司 | Include the surgical instrument assemblies of flexible joint kinematic system |
| CN205234555U (en) * | 2015-12-21 | 2016-05-18 | 苏州天臣国际医疗科技有限公司 | Device is cut with seam to chamber mirror surgery operation |
| CN208838054U (en) * | 2018-06-06 | 2019-05-10 | 重庆西山科技股份有限公司 | Stapler push blade bent support mechanism |
| CN210843258U (en) * | 2019-08-21 | 2020-06-26 | 康奇舒宁(苏州)医疗科技有限公司 | Push-type broach rod assisting mechanism for anastomat and anastomat |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021031989A1 (en) | 2021-02-25 |
| CN110403659A (en) | 2019-11-05 |
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