CN109662744B - Anastomat - Google Patents
Anastomat Download PDFInfo
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- CN109662744B CN109662744B CN201811641013.1A CN201811641013A CN109662744B CN 109662744 B CN109662744 B CN 109662744B CN 201811641013 A CN201811641013 A CN 201811641013A CN 109662744 B CN109662744 B CN 109662744B
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- frame
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- 238000010304 firing Methods 0.000 claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000008093 supporting effect Effects 0.000 description 7
- 210000000056 organ Anatomy 0.000 description 4
- 238000009527 percussion Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000001960 triggered effect Effects 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
- 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
- A61B2017/07271—Stapler heads characterised by its cartridge
-
- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (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)
- Surgical Instruments (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention discloses an anastomat, which comprises: a staple pushing and firing mechanism and a cutter firing mechanism. The nail pushing and firing mechanism comprises a nail bin frame, two groups of nail pushing block assemblies arranged in the nail bin frame, a pair of pushing blocks which are suitable for respectively pushing the two groups of nail pushing block assemblies to move towards the direction of the nail slot so as to push out the anastomotic nail from the nail slot, and a firing assembly which is suitable for firing the pushing blocks. The cutter firing mechanism comprises a push cutter body arranged in the inner cavity of the handle part of the nail bin frame, a cutter connected with the push cutter body and a pushing component suitable for pushing the push cutter blade.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an anastomat.
Background
Various surgical linear cutting staplers are used to replace the needled freehand anastomosis procedure used in the shell surgery, and are being widely used in organs and tissues such as the human digestive tract organs, respiratory tract organs, and genitourinary organs.
For the anastomat widely used in the prior art, for example, the firing mechanism of the surgical linear cutting anastomat with the publication number CN103169515A comprises a push button, a sliding block, a push rod, a push nail inclined wedge and a cutting knife, so that the firing mechanism realizes the pushing operation of the push nail block and the cutting knife through the push button, firstly, the force application requirement on the hand of an operator in the operation process of the push button is larger, and the pushing force of a thumb is limited generally, so that the operation process and the inconvenience are caused. In addition, the structure is not arranged on the percussion of the cutting knife and the nail pushing block separately, the nail pushing block and the cutting knife are simultaneously percussion when the percussion mechanism is operated, and the operation of suturing and cutting simultaneously can cause bad tissue suturing effect and even bleeding.
Disclosure of Invention
The invention aims to provide an anastomat, which aims to solve the technical problem that independent firing control is respectively realized for a staple pushing structure and a cutting structure.
The anastomat of the invention is realized as follows:
a stapler, comprising:
The nail pushing and firing mechanism comprises a nail bin frame, two groups of nail pushing block assemblies arranged in the nail bin frame, a pair of pushing blocks which are suitable for respectively pushing the two groups of nail pushing block assemblies to move towards the direction of a nail groove so as to push out the anastomotic nail from the nail groove, and a firing assembly which is suitable for firing the pushing blocks; and
The cutting knife firing mechanism comprises a push knife body arranged in the inner cavity of the handle part of the nail bin frame, a cutting knife connected with the push knife body, and a pushing component suitable for pushing the push knife.
In a preferred embodiment of the present invention, the firing assembly includes a pair of kidney-shaped hole units symmetrically formed on the pushing blocks, a fixing rod passing through the kidney-shaped holes on the pushing blocks at the same time, and a power unit adapted to be abutted to push the pushing blocks to slide along the fixing rod; wherein the method comprises the steps of
The two axial ends of the fixing rod are fixedly connected with the nail bin frame; the kidney-shaped hole is obliquely arranged relative to the bottom end part of the pushing block, which is away from the nail pushing block assembly.
In a preferred embodiment of the present invention, the pushing assembly includes a chute formed on a side wall of the handle portion of the cartridge frame, a slide button adapted to slide along the chute and located outside the side wall of the cartridge frame, and a slide block connected to the slide button and located in an inner cavity of the handle portion of the cartridge frame; and
The push-type knife comprises a push-type knife body, and is characterized in that a first wedge-shaped block is arranged at one end of the slide block, facing the push-type knife body, and a second wedge-shaped block which is suitable for being matched and abutted with the first wedge-shaped block is arranged at one end of the push-type knife body, facing the slide block.
In a preferred embodiment of the present invention, the cutter firing mechanism further includes a cutter passing rack disposed in the inner cavity of the handle portion of the cartridge rack and adapted for passing the push cutter body;
The knife passing device is characterized in that a knife passing groove is formed in the knife passing frame, a cross beam is arranged on the top cross frame of the knife passing frame in the knife passing groove, and the cross beam is suitable for being abutted against the semi-arc-shaped baffle plate on the push knife body.
In a preferred embodiment of the present invention, the kidney-shaped hole unit includes at least two kidney-shaped holes formed on the pushing block, and the inclination directions and the inclination angles of the at least two kidney-shaped holes relative to the pushing block, which are opposite to the bottom end of the pushing block assembly, are the same;
The kidney-shaped holes are arranged at two ends of the pushing block in the length direction.
In a preferred embodiment of the present invention, the power unit includes a thrust frame having one end abutting against the push block, and a handle connected to the thrust frame to pull the thrust frame;
The thrust frame is hinged with the clamping hook through a hinge shaft, the hinge shaft is positioned between the end part of the thrust frame, which is respectively propped against the pushing block, and the end part of the connecting handle, and is suitable for pushing the pushing frame under the action of the hinge shaft when the thrust frame is pulled by the handle.
In a preferred embodiment of the invention, the power unit further comprises an elastic safety element clamped between the thrust frame and the clamping hook;
The elastic safety element comprises a base and a pair of wings, wherein one end of the pair of wings is integrally connected with the base; a notch is formed between a pair of the wings, and extends along the length direction of the wings to form a notch at the other end of the pair of wings;
one wing of a pair of wings abuts the thrust frame and the other wing abuts the pinch hook.
In a preferred embodiment of the present invention, the ejector pin block assembly includes a plurality of ejector pin blocks arranged along a straight line;
The nail pushing block comprises two nail pushing parts which are arranged in a staggered manner and used for pushing the anastomat, and a connecting part arranged between the two nail pushing parts; the pushing block is suitable for simultaneously pushing against the connecting parts corresponding to the plurality of pushing nail blocks included in the pushing nail block assembly.
In a preferred embodiment of the invention, the cutter firing mechanism further comprises a metal spring sheet arranged at the bottom of the handle part of the nail bin frame, which is far away from the nail anvil frame;
the metal elastic sheet comprises a base body inserted on the bottom of the handle part of the nail bin frame and a wing body which is integrally formed with the base body and is bent towards the nail anvil frame relative to the base body;
the wing body stretches into the inner cavity of the handle part of the nail bin frame to be abutted against the push knife body.
In a preferred embodiment of the present invention, the pushing assembly further includes a locking member provided at the handle portion of the cartridge frame and adapted to be engaged with the sliding block;
The locking piece comprises a base part which is hinged with the handle part of the nail cartridge frame and a plug-in part which is integrally connected with the body and is suitable for being partially inserted into the sliding block;
the sliding block is provided with a jack suitable for the insertion of the insertion part, the inner wall of the jack is integrally provided with a trigger part suitable for being abutted against the insertion part, and the base part is suitable for rotating relative to the handle part of the nail cartridge frame when the trigger part abuts against the insertion part, so that the insertion part is separated from the jack.
By adopting the technical scheme, the invention has the following beneficial effects: the anastomat provided by the invention has the advantages that the cutting knife firing mechanism and the nail pushing firing mechanism are two independent firing mechanisms, the cutting knife and the nail pushing are respectively fired, the operation is not interfered, and the operation is convenient.
The designed cutting knife firing mechanism realizes the pushing action on the push knife body by the pushing component, and then completes the cutting of tissues by the cutting knife entering the cutting area under the transmission action of the push knife body.
The designed firing assembly is used for independently executing the firing of the staples, and the power unit drives the pushing block to generate a moving trend relative to the horizontal direction of the staple pushing block assembly, but due to the action of the fixing rod and the kidney-shaped hole on the pushing block, the moving trend of the pushing block in the horizontal direction, which occurs when the fixing rod drives the power unit along the track of the kidney-shaped hole, is converted into a pushing force relative to the vertical direction of the staple pushing block assembly, and then the staples are pushed out of the staple grooves by the staple pushing block.
The firing assembly is only used for solely firing the anastomat, and the firing of the cutting knife of the anastomat is not affected in operation, so that the operability is more flexible. Furthermore, the power unit of the firing assembly adopts the handle structure, so that a human body can directly hold the handle relative to the clamping hook to grip the handle when operating the power unit, and the handle moves towards one side of the clamping hook, so that the thrust frame connected with the handle can realize the pushing action on the pushing block.
Further, the elastic safety piece is arranged between the thrust frame and the clamping hook and used for realizing the switching of the motion control of the thrust frame, and as the notch is formed between the pair of wings, when the thrust frame is pulled by the handle, certain pressure needs to be applied to the handle, so that the notch between the pair of wings is gradually tightened, namely, the pair of wings are gradually close to each other, and the thrust frame can generate the pushing effect on the pushing block. Under the general condition, when the thrust frame does not need to move, even if a hand touches a handle, the thrust frame does not generate a pushing effect on the pushing block under the premise of no certain pressure, so that the problem of misoperation can be effectively avoided. And the elastic safety piece utilizes the notch to realize that the deformation of the elastic safety piece is utilized to switch the working mode of the handle, so that the operation is quick and efficient, the elastic safety piece is not required to be continuously disassembled and assembled, and the falling and forgetting problems of the elastic safety piece can be avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the stapler of the present invention;
FIG. 2 is a schematic view of the overall structure of the knife firing mechanism of the stapler of the present invention;
FIG. 3 is a schematic view of a partial construction of a knife firing mechanism of the stapler of the present invention;
FIG. 4 is a schematic view of the structure of the over-knife rest of the knife firing mechanism of the stapler of the present invention;
FIG. 5 is a schematic view of a metal spring of a knife firing mechanism of the stapler of the present invention;
FIG. 6 is a schematic view of the structure of the lockout of the knife firing mechanism of the stapler of the present invention;
FIG. 7 is a schematic view of the overall structure of the staple pushing firing mechanism of the stapler of the present invention;
FIG. 8 is a schematic view of a part of the staple pushing firing mechanism of the stapler of the present invention;
FIG. 9 is a schematic illustration of a partial construction of a staple pusher firing mechanism of the stapler of the present invention;
FIG. 10 is a schematic view of a limiting movable slot of a staple pusher firing mechanism of the stapler of the present invention;
FIG. 11 is a schematic view of the overall structure of a staple pusher of the staple pusher firing mechanism of the stapler of the present invention;
FIG. 12 is a schematic view of the overall structure of the pusher block of the staple pushing firing mechanism of the stapler of the present invention.
In the figure: cartridge bay 101, staple pushing section 105, connecting section 106, push block 107, limit movable slot 108, spacer 109, fixed bar 110, kidney-shaped aperture 112, inner bay 113, outer bay 115, thrust bay 116, handle 117, anti-slip sleeve 118, clamping hook 119, hinge shaft 120, base 121, wing 122, slot 123, notch 124, first flat contact surface 125, second flat contact surface 126, push body 201, cutting blade 202, runner 203, semi-arcuate stop 204, slide button 205, slide block 207, first wedge 208, second wedge 209, knife passing slot 210, knife passing slot 211, cross beam 213, base 215, wing 216, socket 217, base 218, plug 219, jack 220, trigger 221, anvil bay 223.
Detailed Description
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example 1:
Referring to fig. 1 to 12, the present embodiment provides a stapler, including: a staple pushing firing mechanism for firing staples such that the staples are pushed out of the staple slots, and a cutter firing mechanism for firing the cutter 202 into a cutting zone for cutting tissue.
The staple pushing and firing mechanism comprises a staple cartridge frame 101, two groups of staple pushing block assemblies arranged in the staple cartridge frame 101, a pair of pushing blocks 107 which are suitable for respectively pushing the two groups of staple pushing block assemblies to move towards the direction of the staple slots so as to push out staples from the staple slots, and a firing assembly which is suitable for firing the pushing blocks 107.
The cutter firing mechanism comprises a push cutter body 201 arranged in the inner cavity of the handle part of the nail bin frame 101, a cutter 202 connected with the push cutter body 201, and a pushing component suitable for pushing the push cutter.
The two sets of nail pushing block assemblies in this embodiment are conventional technical means, and are not described in detail in this embodiment. Since there are two sets of pusher assemblies, the pusher blocks 107 are correspondingly also arranged in pairs such that one pusher block 107 of a pair of pusher blocks 107 pushes one set of pusher block assemblies and the other pusher block 107 pushes the other set of pusher block assemblies.
Specifically, the nail pushing block assembly comprises a plurality of nail pushing blocks which are arranged along a straight line; the nail pushing block comprises two nail pushing parts 105 which are arranged in a staggered manner and used for pushing the anastomat, and a connecting part 106 arranged between the two nail pushing parts 105; the pushing block 107 is adapted to simultaneously abut against the connecting portions 106 respectively corresponding to the plurality of pushing blocks included in the pushing block assembly.
In order to limit the movement track of the pushing block 107 in the process of pushing the pushing block assembly and ensure the pushing effect of the pushing block 107 on the pushing block assembly, two limiting movable grooves 108 for limiting a pair of pushing blocks 107 are respectively arranged in the nail bin frame 101. The spacing movable slot 108 is formed by an internal spacer 109 integrally formed with the cartridge bay 101.
The firing assembly comprises waist-shaped holes 112 symmetrically formed on the pair of pushing blocks 107, a fixed rod 110 which simultaneously passes through the waist-shaped holes 112 on the pair of pushing blocks 107, and a power unit which is suitable for pushing the pushing blocks 107 to slide along the fixed rod 110; wherein the two axial ends of the fixing rod 110 are fixedly connected with the nail bin frame 101; the kidney-shaped aperture 112 is disposed obliquely with respect to the pusher 107 away from the bottom end of the pusher assembly. In order to ensure the matching effect of the fixing rod 110 and the kidney-shaped hole 112, the width of the kidney-shaped hole 112 in the present embodiment is matched with the outer diameter of the fixing rod 110, and the length of the kidney-shaped hole 112 is designed according to the distance that the staple pusher assembly needs to move when pushing the staple out of the staple slot, where the power unit drives the pusher 107 to generate a moving trend relative to the horizontal direction of the staple pusher assembly, but due to the action of the fixing rod 110 and the kidney-shaped hole 112 on the pusher 107, the moving trend of the pusher 107 around the fixing rod 110 along the track of the kidney-shaped hole 112 is converted into a pushing force relative to the vertical direction of the staple pusher assembly, so that the staple is pushed out of the staple slot by the pusher.
It should be noted that, for the nail cartridge holder 101 of this embodiment, the inner holder body 113 and the outer holder body 115 are used in cooperation, where the push pin block assembly and the push block 107 are disposed on the inner holder body 113, and the fixing rod 110 is fixedly connected with the outer holder body 115 through the inner holder body 113, so as to fix the axis of the fixing rod 110, and prevent the fixing rod 110 from shifting.
In order to improve the stability of the moving state of the pushing block 107 under the action of the power unit, the kidney-shaped hole 112 unit comprises at least two kidney-shaped holes 112 formed in the pushing block 107, and the inclination directions and the inclination angles of the at least two kidney-shaped holes 112 relative to the bottom end part of the pushing block 107 facing away from the nail pushing block assembly are the same; kidney-shaped holes 112 are provided at both ends in the longitudinal direction of the push block 107. The drawings of this embodiment only illustrate two kidney-shaped apertures 112. Here, the angle formed by the kidney-shaped hole 112 and the bottom end of the push block 107 facing away from the push block assembly is optionally 45 ° to 60 °. It will be readily understood by those skilled in the art herein that the difference in the angle formed by the kidney-shaped aperture 112 and the bottom end of the pusher 107 facing away from the pusher assembly affects the distance that the pusher 107 is pushed against the pusher assembly, and therefore the range of angles herein calculates the corresponding angle based on the distance that the staples of the staplers of different gauge models are moved.
More specifically, the pushing assembly comprises a sliding groove 203 formed on the side wall of the handle part of the nail cartridge frame 101, a sliding button 205 which is suitable for sliding along the sliding groove 203 and is positioned outside the side wall of the nail cartridge frame 101, and a sliding block 207 which is connected with the sliding button 205 and is positioned in the inner cavity of the handle part of the nail cartridge frame 101; and a first wedge-shaped block 208 is arranged at one end of the sliding block 207 facing the push broach body 201, and a second wedge-shaped block 209 suitable for being matched and abutted with the first wedge-shaped block 208 is arranged at one end of the push broach body 201 facing the sliding block 207. When pushing force is applied to the sliding button 205 by the hand, the sliding button 205 moves towards one side of the push-type cutter body 201, when the sliding block 207 approaches the push-type cutter body 201, a first wedge-shaped block 208 connected with the sliding button 205 is matched with a second wedge-shaped block 209 arranged at one end of the push-type cutter body 201, and in this structure, as the sliding block 207 continues to move, the push-type cutter body 201 is pushed by the sliding block 207 to move towards one side of the cutting knife 202, so that the cutting knife 202 moves towards a cutting area under the action of the push-type cutter body 201, and after the cutting knife 202 reaches the cutting area, the cutting knife 202 cuts human tissues along with the continuous pushing of the sliding block 207.
The cutter firing mechanism designed in the embodiment further comprises a cutter passing frame 210 which is arranged in the inner cavity of the handle part of the nail bin frame 101 and is suitable for the cutter pushing body 201 to pass through; the tool passing groove 211 is arranged in the tool passing frame 210, and a cross beam 213 is arranged at the top cross frame of the tool passing frame 210 at the opening of the tool passing groove 211, and the cross beam 213 is suitable for being abutted against the semi-arc-shaped baffle 204 on the push broach body 201. At this time, for the push-type cutter body 201 and the cutter 202 of the present embodiment, the semi-arc-shaped blocking piece 204 is disposed between the push-type cutter body 201 and the cutter 202, where the semi-arc-shaped blocking piece 204 protrudes from the push-type cutter body 201, and in a state where the push-type cutter body 201 is not pushed in a normal state, the semi-arc-shaped blocking piece 204 is blocked on a side of the beam 213 facing the push-type cutter body, but since a surface of the semi-arc-shaped blocking piece 204 contacting the beam 213 is in a semi-arc-shaped structure, after the push-type cutter body 201 receives the pushing force of the sliding block 207, the semi-arc-shaped blocking piece 204 can move downward relative to the beam 213, so that the semi-arc-shaped blocking piece 204 gradually passes through from below the beam 213, and thus, the resistance formed between the beam 213 and the semi-arc-shaped blocking piece 204 disappears, and the cutter 202 can continuously push toward the cutting area under the action of the sliding block 207. As can be seen, the beam 213 and the semi-arc-shaped baffle 204 of the present embodiment mainly play a role in providing an "obstacle" for pushing the cutting blade 202 during the pushing process of the cutting blade 202, and the "obstacle" needs to apply a certain pushing force to the sliding button 205 to enable the sliding block 207 to have a sufficient pushing force to push the cutting blade 202 to move, so that, based on the above design, during the operation process, even if the sliding button 205 is misoperated, the pushing force applied to the sliding button 205 is insufficient, the pushing of the cutting blade 202 cannot be smoothly performed beyond the "obstacle", and a "safety" effect is provided for the operation of the cutting blade 202.
Then, with respect to the above-mentioned "obstacle" structure, it is also specifically described that, for the cutting blade 202 and the pushing blade 201 which are engaged in the cutter passing groove 211, there is a certain vertical clearance between the bottom of the cutter passing groove 211 and the bottom of the cutter passing groove 211, that is, the bottom of the cutting blade 202 and the pushing blade 201 do not directly contact the bottom of the cutter passing groove 211, the significance of this design is that the semi-arc-shaped blocking piece 204 allows the pushing blade 201 to pass under the cross beam 213 by utilizing the above-mentioned vertical clearance under the pushing force of the sliding block 207, so that the pushing blade 201 smoothly passes through the cross beam 213, and the resistance of the cross beam 213 to the pushing blade 201 is released. As such, the vertical clearance between the bottoms of the cutting blade 202 and the pusher blade body 201 and the bottom of the clearance pocket 211 is a fundamental requirement for ensuring the rationality of the "barrier" structure. For this reason, the cutter firing mechanism of the present embodiment further includes a metal spring sheet provided at the bottom of the handle portion of the cartridge holder 101 facing away from the anvil holder 223; the metal spring plate comprises a base 215 inserted on the bottom of the handle part of the nail cartridge frame 101 and a wing body 216 which is integrally formed with the base 215 and is bent towards the nail anvil frame 223 relative to the base 215; the wing body 216 extends into the inner cavity of the handle part of the nail bin frame 101 to abut against the push knife body 201. The metal elastic sheet is made of a metal material with certain rigidity and elasticity, the base 215 of the metal elastic sheet is connected with the handle part of the nail bin frame 101 in a clamping manner, at this time, the base 215 is in parallel relation with the inner cavity wall of the handle part of the nail bin frame 101, and an included angle of 45 degrees is formed between the wing body 216 bent relative to the base 215 and the collective body, for example, but not limited to, so that the wing body 216 stretches into the inner cavity of the handle part of the nail bin frame 101 and then abuts against the bottom of the push cutter body 201, a supporting effect on the bottom of the push cutter body 201 is formed, and the push cutter body 201 and the cutting cutter body 202 are integrally connected, so that the wing body 216 can form a supporting effect on the whole bottom of the cutting cutter 202 and the push cutter body 201, and a vertical gap can be formed between the bottom of the push cutter body 201 and the push cutter body 211 relative to the passing groove 211. Furthermore, in order to effectively ensure the supporting effect of the wing body 216 on the bottom of the push broach body 201, a socket 217 suitable for the inclined insertion of the wing body 216 is formed on the bottom end surface of the push broach body 201 contacted with the wing body 216, so that the supporting effect of the wing body 216 on the push broach body 201 is not limited to a 'point' supporting, but a 'face' supporting, and the abutting of the 'face' supporting combined beam 213 and the semi-arc-shaped baffle 204 can ensure that the push broach body 201 is stably present in the inner cavity of the handle part of the cartridge frame 101 before being pushed by the sliding block 207. When the sliding block 207 applies a pushing force to the push broach 201, the wing portions of the metal spring sheet can be pressed down to deform, so that the metal spring sheet at this time also does not form an obstacle in the moving process of the push broach 201.
More specifically, the power unit adopted in this embodiment includes a thrust frame 116 with one end pushing against the thrust block 107, and a handle 117 connected to the thrust frame 116 to pull the thrust frame 116; the handle 117 may be an integral structure with the thrust frame 116 or a split structure, and in this embodiment, only an integral structure is taken as an example, and an anti-slip sleeve 118 may be sleeved outside the handle 117, so as to improve the comfort level of the hand when holding the handle 117.
With respect to the thrust frame 116, the thrust frame 116 is operated such that the thrust frame 116 is hingedly connected to the clamping hook 119 by means of a hinge shaft 120, the hinge shaft 120 being located intermediate the end of the thrust frame 116 against the pushing block 107 and the end of the connecting handle 117, respectively, adapted to effect pushing of the thrust frame 116 by the hinge shaft 120 when the thrust frame 116 is pulled by the handle 117. The particular thrust frame 116 rotates about the hinge shaft 120 such that the portion that abuts the pusher block 107 produces an abutting pushing action against the pusher block 107.
With the slide button 205 in this embodiment being fixed with respect to the handle portion of the cartridge holder 101 in such a manner that the slide button 205 can be held in a fixed state with respect to the handle portion of the cartridge holder 101 when the slide button 205 is not in use, a locking member adapted to be engaged with the slide block 207 is provided between the handle portion of the cartridge holder 101 and the slide block 207. Specifically, the locking member comprises a base portion 218 hingedly connected to the handle portion of cartridge housing 101, and a plug portion 219 integrally connected to the body and adapted to be partially inserted into slider 207; the sliding block 207 is provided with a jack 220 into which the plugging portion 219 is inserted, and a trigger portion 221 adapted to abut against the plugging portion 219 is integrally provided on an inner wall of the jack 220, and when the trigger portion 221 abuts against the plugging portion 219, the base portion 218 is adapted to rotate relative to the handle portion of the cartridge holder 101, so that the plugging portion 219 is disengaged from the jack 220. That is, when no pushing force is applied to the slide button 205, the plugging portion 219 of the locking member is snapped into the insertion hole 220 of the slide block 207, at this time, the triggering portion 221 on the inner wall of the insertion hole 220 abuts against the plugging portion 219, when pushing force is applied to the slide button 205, the triggering portion 221 forms a pushing force on the plugging portion 219, the plugging portion 219 rotates around the hinge shaft 230 provided between the body and the handle portion of the cartridge holder 101 under the pushing action of the triggering portion 221, and as the body rotates, the plugging portion 219 gradually disengages from the insertion hole 220, so as to release the blocking force on the slide block 207, and in the above process, a certain pushing force needs to be applied to the slide button 205 to disengage the plugging portion 219 from the insertion hole 220, so that the slide button 205 is not triggered to operate when the slide button 205 is touched generally during an operation.
Example 2:
On the basis of the anastomat of embodiment 1, the anastomat provided by the embodiment further comprises an elastic safety element.
Since the handgrip 117 of the present embodiment is configured to generate a pinching force for the handgrip 117 by holding the handgrip 117 with a hand, it is unavoidable that a possibility of erroneous operation of the handgrip 117 may occur in the hand during the surgical operation, and based on consideration of the above-described problems, a dislocated firing of the push block 107 after the handgrip 117 is erroneously touched is avoided, the present embodiment designs a firing control structure for switching the push block 107, specifically including an elastic safety member engaged between the thrust frame 116 and the clamp hook 119.
Specifically, the elastic safety element includes a base 121 and a pair of wings 122 integrally connected to one end of the base 121; a notch 123 is formed between a pair of wings 122, notch 123 extending along the length of wings 122 to form a notch 124 at the other end of a pair of wings 122; one wing 122 of a pair of wings 122 abuts thrust frame 116 and the other wing 122 abuts pinch hook 119. The elastic safety piece is made of metal materials with certain rigidity, the elasticity of the elastic safety piece is realized through the notch 123 in the pair of wings 122, under the condition that the handle 117 is not forced, the pair of wings 122 of the elastic safety piece respectively prop against the thrust frame 116 and the clamping hook 119 in a normal state, when the thrust frame 116 is pulled by the handle 117, certain pressure needs to be applied to the handle 117, so that the notch 123 between the pair of wings 122 is gradually tightened, namely the pair of wings 122 are gradually closed, and the thrust frame 116 can generate a pushing effect on the pushing block 107. In general, when the thrust frame 116 does not need to be moved, even if the hand touches the handle 117, the thrust frame 116 does not generate a pushing effect on the pushing block 107 without a certain pressure, so that the problem of misoperation can be effectively avoided. And the elastic safety piece utilizes the notch 123 to realize that the operation mode of the handle 117 is switched by utilizing the deformation of the elastic safety piece, so that the operation is quick and efficient, the elastic safety piece is not required to be continuously disassembled and assembled, and the problems of falling and forgetting of the elastic safety piece can be avoided.
In order to reduce the occurrence of relative sliding between the elastic safety element and the handle 117 during the process of pinching the handle 117, and to affect the pinching effect of the handle 117, the side walls of the wings 122 that abut the thrust frame 116 are provided with first flat contact 125 surfaces; and the side wall of wing 122 that abuts pinch hook 119 is provided with a second flat contact surface 126. The first flat contact surface 125 and the second flat contact surface 126 are more stable and reliable in contact effect than the circular arc contact surface.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are more fully described herein with reference to the accompanying drawings, in which the principles of the present invention are shown and described, and in which the general principles of the invention are defined by the appended claims.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the mechanism or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Claims (7)
1. A stapler, comprising:
The nail pushing and firing mechanism comprises a nail bin frame, two groups of nail pushing block assemblies arranged in the nail bin frame, a pair of pushing blocks which are suitable for respectively pushing the two groups of nail pushing block assemblies to move towards the direction of a nail groove so as to push out the anastomotic nail from the nail groove, and a firing assembly which is suitable for firing the pushing blocks; and
The cutting knife firing mechanism comprises a push knife body arranged in the inner cavity of the handle part of the nail bin frame, a cutting knife connected with the push knife body and a pushing component suitable for pushing the push knife body;
The firing assembly comprises a pair of waist-shaped hole units symmetrically arranged on the pushing blocks, a fixing rod which simultaneously penetrates through the waist-shaped holes on the pushing blocks, and a power unit which is suitable for propping against to push the pushing blocks to slide along the fixing rod; wherein the method comprises the steps of
The two axial ends of the fixing rod are fixedly connected with the nail bin frame; the kidney-shaped hole is obliquely arranged relative to the bottom end part of the pushing block, which is away from the nail pushing block assembly;
The power unit comprises a thrust frame with one end propped against the pushing block and a handle connected with the thrust frame to pull the thrust frame;
the thrust frame is hinged with the clamping hook through a hinge shaft, the hinge shaft is positioned between the end part of the thrust frame, which is respectively propped against the pushing block, and the end part of the connecting handle, and is suitable for pushing the pushing block under the action of the hinge shaft when the thrust frame is pulled by the handle;
the power unit further comprises an elastic safety piece clamped between the thrust frame and the clamping hook; the elastic safety piece is made of metal materials with certain rigidity;
The elastic safety element comprises a base and a pair of wings, wherein one end of the pair of wings is integrally connected with the base; a notch is formed between a pair of the wings, and extends along the length direction of the wings to form a notch at the other end of the pair of wings;
one wing of a pair of wings abuts the thrust frame and the other wing abuts the pinch hook.
2. The stapler of claim 1, wherein the pushing assembly comprises a chute formed in a side wall of the cartridge housing handle portion, a slide button adapted to slide along the chute and located outside the cartridge housing side wall, and a slide block connected to the slide button and located in an interior cavity of the cartridge housing handle portion; and
The push-type knife comprises a push-type knife body, and is characterized in that a first wedge-shaped block is arranged at one end of the slide block, facing the push-type knife body, and a second wedge-shaped block which is suitable for being matched and abutted with the first wedge-shaped block is arranged at one end of the push-type knife body, facing the slide block.
3. The stapler of claim 1, wherein the cutter firing mechanism further comprises a knife passing rack adapted to pass through the pusher body disposed in the interior cavity of the cartridge housing handle portion;
The knife passing device is characterized in that a knife passing groove is formed in the knife passing frame, a cross beam is arranged on the top cross frame of the knife passing frame in the knife passing groove, and the cross beam is suitable for being abutted against the semi-arc-shaped baffle plate on the push knife body.
4. The stapler according to claim 1, wherein the kidney-shaped hole unit includes at least two kidney-shaped holes opened on the push block, and the inclination direction and the inclination angle of the at least two kidney-shaped holes with respect to the push block away from the bottom end portion of the push block assembly are the same;
the kidney-shaped holes are arranged at two ends of the pushing block in the length direction.
5. The stapler of claim 1, wherein the staple pusher assembly comprises a plurality of staple pusher blocks arranged in a straight line;
The nail pushing block comprises two nail pushing parts which are arranged in a staggered manner and used for pushing the anastomat, and a connecting part arranged between the two nail pushing parts; the pushing block is suitable for simultaneously pushing against the connecting parts corresponding to the plurality of pushing nail blocks included in the pushing nail block assembly.
6. The stapler of claim 1, wherein the cutter firing mechanism further comprises a metal spring plate disposed at a bottom of the cartridge frame handle portion facing away from the anvil frame;
the metal elastic sheet comprises a base body inserted on the bottom of the handle part of the nail bin frame and a wing body which is integrally formed with the base body and is bent towards the nail anvil frame relative to the base body;
the wing body stretches into the inner cavity of the handle part of the nail bin frame to be abutted against the push knife body.
7. The stapler of claim 2, wherein the push assembly further comprises a locking member provided to the cartridge housing handle portion and adapted to engage the slider block;
The locking piece comprises a base part hinged with the handle part of the nail cartridge frame and an inserting part which is integrally connected with the base part and is suitable for being partially inserted into the sliding block;
the sliding block is provided with a jack suitable for the insertion of the insertion part, the inner wall of the jack is integrally provided with a trigger part suitable for being abutted against the insertion part, and the base part is suitable for rotating relative to the handle part of the nail cartridge frame when the trigger part abuts against the insertion part, so that the insertion part is separated from the jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641013.1A CN109662744B (en) | 2018-12-29 | 2018-12-29 | Anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641013.1A CN109662744B (en) | 2018-12-29 | 2018-12-29 | Anastomat |
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| Publication Number | Publication Date |
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| CN109662744A CN109662744A (en) | 2019-04-23 |
| CN109662744B true CN109662744B (en) | 2024-05-10 |
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| CN201811641013.1A Active CN109662744B (en) | 2018-12-29 | 2018-12-29 | Anastomat |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464400B (en) * | 2019-08-06 | 2024-02-27 | 安徽麦吉恩医疗科技有限公司 | Endoluminal cutting anastomat and clamp head structure thereof |
| CN110664449B (en) * | 2019-11-05 | 2023-08-11 | 江苏省肿瘤医院 | Cutting stitching instrument suitable for minimally invasive surgery |
| CN113367754B (en) * | 2021-07-10 | 2024-01-16 | 江苏康赛医疗器械科技有限公司 | Linear cutting anastomat with safety component |
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| CN210077758U (en) * | 2018-12-29 | 2020-02-18 | 安徽麦吉恩医疗科技有限公司 | Anastomat |
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| AU2013403915A1 (en) * | 2013-11-04 | 2016-04-28 | Covidien Lp | Surgical fastener applying apparatus |
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| EP0061466A1 (en) * | 1980-09-18 | 1982-10-06 | Hospital Products Limited | Disposable surgical stapler |
| CN2764312Y (en) * | 2005-01-17 | 2006-03-15 | 翁志强 | Anastomat for linear cutting |
| CN101856251A (en) * | 2010-06-07 | 2010-10-13 | 常州威克医疗器械有限公司 | Disposable linear anastomat |
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| CN109662744A (en) | 2019-04-23 |
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