CN110916734A - Liver removing device for laparoscopic surgery - Google Patents
Liver removing device for laparoscopic surgery Download PDFInfo
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- CN110916734A CN110916734A CN201911205226.4A CN201911205226A CN110916734A CN 110916734 A CN110916734 A CN 110916734A CN 201911205226 A CN201911205226 A CN 201911205226A CN 110916734 A CN110916734 A CN 110916734A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
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Abstract
A liver scrabbling device for laparoscopic surgery relates to the technical field of medical instruments and comprises a support, a telescopic rod, a hose, a liver scrabbling sheet, a spring, a stay wire and a wire rewinding device, wherein the rear end of the telescopic rod is connected with the support, the front end of the hose is closed, the rear end of the hose is fixedly connected with the side wall of the support, a pipe orifice at the rear end of the hose is opposite to the telescopic rod, the telescopic rod can be inserted from the pipe orifice at the rear end of the hose when being stretched, the liver scrabbling sheet comprises a bottom sheet, the bottom sheet is fixedly connected with the support, the hose is fixedly connected with the bottom sheet, the left half part of the bottom sheet is wound from left to right, the right half part of the bottom sheet is wound into a scroll shape from right to left, the spring is arranged in the telescopic rod, the stay wire is arranged in the telescopic rod in a penetrating way, the stay wire is pulled backwards to enable the telescopic rod to retract and shorten the, the spring pushes the telescopic rod to extend and insert into the hose to stretch the negative plate to be straight, so that the liver-scraping plate is unfolded.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a liver scrabbling device for laparoscopic surgery.
Background
During laparoscopic surgery, the resection of the right posterior lobe of the liver, the eight-segment liver and the right half liver can be successfully completed only by abundant laparoscopic liver resection experience and technology of doctors due to difficult exposure of operative fields and difficult treatment of the second hepatic portal. Whether the operative field can be fully exposed is a very critical ring in the operation process, the liver is generally taken off in the operation by adopting a mode that two forceps clamps clamp gauze to cling to liver leaves to crawl and advance, so that the operative field is exposed, the operation of the liver taking off mode is inconvenient due to the limited stress area, the problem that the forceps clamps damage the liver leaves easily occurs due to slight carelessness in the operation process, and the reliability is poor.
Chinese patent document CN107997792A discloses a liver raking device for a single-port laparoscope, which connects a plurality of fan blades at the front end of an operating rod, wherein one fan blade is fixedly connected with a support in the operating rod, and the other fan blades are hinged with the support and connected with a push-pull blade, and the push-pull blade is driven to move by pushing and pulling a fan blade push-pull rod arranged in the operating rod, so as to push the fan blades to open and close. The device has a complex structure and is not suitable for being used as a disposable surgical instrument. The fan blade is a strip-shaped long rod, the rear ends of the strip-shaped long rods are hinged together, and the strip-shaped long rods are opened in a scissor manner when being opened, so that the front ends of the strip-shaped long rods are opened to a large extent by pulling a small amount of the rear ends (sometimes, the front ends of the fan blade are opened too wide at a moment, and other organs are easy to collide or the liver leaves are easy to scratch), and the motion range of the front ends of the fan blade is not convenient to be accurately controlled. In addition, since it only relies on several long strip-shaped "fan" to contact the liver, the stress surface is still not wide enough, and the reliability needs to be further improved.
Disclosure of Invention
The invention aims to provide a laparoscopic surgery liver scrabbling device which is simple in structure, convenient to use and reliable.
In order to solve the technical problems, the invention adopts the following technical scheme: a laparoscopic surgical liver shaver comprising:
the wire drawing device comprises a strip-shaped bracket, wherein a wire drawing cavity is arranged in the bracket, and a plurality of groups of mounting holes communicated with the wire drawing cavity are symmetrically formed in the left side and the right side of the front half section of the bracket;
the telescopic rods comprise a plurality of hollow rods which are arranged at intervals, the hollow rods are sequentially nested together from inside to outside according to the sequence of the diameters from small to large, the hollow rod with the largest diameter is fixedly arranged in the mounting hole of the bracket, the hollow rod with the relatively smaller diameter can be retracted into the hollow rod with the relatively larger diameter, so that the telescopic rods are integrally shortened, and the hollow rod with the relatively smaller diameter can extend out of the hollow rod with the relatively larger diameter, so that the telescopic rods are integrally lengthened;
the flexible pipes extend along the left-right direction, the front ends of the flexible pipes are closed, the rear ends of the flexible pipes are fixedly connected with the side walls of the support, pipe orifices at the rear ends of the flexible pipes are opposite to the telescopic rods, and the telescopic rods can be inserted from the pipe orifices at the rear ends of the flexible pipes when being extended, so that the bent flexible pipes are stretched to be straight;
the liver-raking sheet comprises a bottom sheet capable of keeping a vortex state by means of elasticity of the liver-raking sheet and a soft protective layer attached to the surface of the bottom sheet, wherein the soft protective layer can be stretched after being pulled by external force and can be contracted after the external force is removed, the middle part of the bottom sheet is fixedly connected to a support, hoses positioned on the left side and the right side of the support are respectively and fixedly connected to the left half part and the right half part of the bottom sheet, the left half part of the bottom sheet is wound into a vortex shape from left to right, the right half part of the bottom sheet is wound into a vortex shape from right to left, and the hoses fixedly connected to the bottom sheet are also wound into a vortex shape along with;
the springs are arranged in the telescopic rods one by one, the telescopic rods are pushed to extend by the elasticity of the springs and are inserted into the corresponding hoses, so that the hoses bent into the scroll shape and the films are stretched to be in a straight state;
the pull wires penetrate through the telescopic rod in a one-to-one correspondence mode, one end of each pull wire is connected with the front end of the telescopic rod, the other end of each pull wire penetrates out of the rear end of the telescopic rod and penetrates into the pull wire cavity, and the telescopic rod can be retracted and shortened and the spring is compressed by pulling the pull wires backwards;
the lockable take-up device is installed at the rear half section of the support and comprises a take-up pulley and a knob fixedly connected with the take-up pulley, the rear ends of all guys are wound on the take-up pulley, and the knob enables the take-up pulley to rotate to realize winding and unwinding of the guys.
Preferably, the left half and the right half of the bottom sheet are both bent into a scroll shape toward the side of the holder.
Wherein, inlay in the mounting hole and establish the fixed cover of telescopic link, be equipped with the baffle in the fixed cover of telescopic link, cavity and back cavity before the baffle separates into the inner chamber of the fixed cover of telescopic link, in the cavity before the biggest hollow rod embedding of diameter, be equipped with a gyro wheel in the back cavity, the through wires hole has been seted up on the baffle, it passes again to walk around the gyro wheel down and gets into in the chamber of acting as go-between along controlling the direction from the through wires hole to act as go-between.
Further, the surface of the front half section of the bracket is also coated with a soft protective layer.
As an alternative, the bottom sheet is cut from a PVC film that is previously hot-bent into a scroll shape.
In the above alternative, the hose is a PVC hose, and the hose and the bottom sheet are ultrasonically welded together.
Further, the support is obtained by PVC injection molding, and the rear end of the hose and the side wall of the support are welded together through ultrasonic waves.
Preferably, granular protrusions are arranged on the outer surface of the soft protective layer at intervals, the height of the protrusions is 0.3mm-1mm, and the diameter of the protrusions is 0.5 mm-1.5 mm. The hollow rod of the telescopic rod is made of stainless steel materials.
The application method of the liver scraping device comprises the following steps: in an initial state, the liver raking piece is wound into a scroll shape, the size of the liver raking device is small, the liver raking device can extend into an abdominal cavity from an opening of the abdomen of a patient conveniently, after the front half section of the liver raking device extends into the abdominal cavity, the wire collecting device is unlocked, the knob is rotated in vitro to enable the wire collecting wheel to be uncoiled, the spring gradually extends along with the extension of the pull wire and pushes the telescopic rod to extend and insert into the hose, and due to the fact that the hose is fixedly connected with the negative of the liver raking piece, the hose and the negative are gradually stretched to be in a flat state in the process that the telescopic rod is inserted into the hose, and therefore the scroll-shaped liver raking piece. When the liver is taken off, the soft protective layer of the liver taking-off piece is attached to the liver lobe, and then the liver tissue blocking the operative field can be removed by holding the rear half section of the bracket to move and/or rotate the liver taking-off piece. When the liver scrabbling device needs to be withdrawn from the abdominal cavity, the wire rewinding device is unlocked firstly, the knob is rotated in vitro to enable the wire rewinding wheel to wind, the telescopic rod is gradually shortened along with the winding of the pull wire, the spring is compressed, the negative film is gradually curled under the action of self resilience force in the process that the telescopic rod is withdrawn from the hose, the telescopic rod is completely withdrawn from the hose, and the liver scrabbling device can be withdrawn from the abdominal opening of a patient after the liver scrabbling piece is restored to the scroll shape.
Compared with the traditional operation mode of clamping gauze by using forceps jaws to rake the liver, the liver raking device provided by the invention has a large contact area with the liver, is more convenient to rake the liver, and can effectively reduce or avoid the condition that liver lobes are damaged due to overlarge local pressure in the liver raking process. Compared with the liver raking device in the background technical document CN107997792A, the liver raking device is simple in structure and can be used as a disposable surgical instrument, in addition, the unfolding and folding of the liver raking piece can be more accurately controlled by rotating the knob of the wire collecting device, the situation that the liver and other organs are bruised due to inaccurate motion control and overlarge motion amplitude in the unfolding and folding processes of the liver raking piece can be better avoided, meanwhile, the liver raking device related by the invention is larger in contact area with the liver, the stress surface of the liver is wider in the liver raking process, and the overall reliability is better.
Drawings
FIG. 1 is a schematic front view of a laparoscopic liver shaver after the liver slice is folded;
FIG. 2 is a schematic top view of the laparoscopic liver shaver after the liver slice is folded;
FIG. 3 is a schematic side view of the laparoscopic liver shaver after the liver slice is unfolded;
FIG. 4 is a schematic view of the internal structure of the laparoscopic liver exsector after the liver exsector is deployed;
FIG. 5 is a partial enlarged view of portion A of FIG. 4;
in the figure:
1-support 2-telescopic rod
3-Soft tube 4-liver-removing tablet
5-spring 6-pull wire
7-take-up device 8-telescopic rod fixing sleeve
9-roller 1 a-wire drawing cavity
2a hollow bar 4a bottom sheet
4 b-soft protective layer 7 a-take-up pulley
7 b-knob 8 a-partition.
Detailed Description
In the description of the present invention, it is to be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In order to facilitate a clearer understanding of the concept of the invention for those skilled in the art, a more detailed description thereof will be given below with reference to the accompanying drawings.
Fig. 1-5 show a specific structure of the laparoscopic surgical liver shaver according to the present embodiment, and as shown in the drawings, the laparoscopic surgical liver shaver mainly includes the following parts: the support 1 of rectangular shape, the many telescopic links 2 that the interval set up, many flexible hoses 3, take off liver piece 4, many springs 5, many acting as go-between 6 and spooler 7 that can lock (the locking structure of spooler 7 is not shown in the figure).
Specifically, a bracing wire cavity 1a is arranged in the bracket 1, and a plurality of groups of mounting holes communicated with the bracing wire cavity 1a are symmetrically arranged on the left side and the right side of the front half section of the bracket 1.
The telescopic rod 2 adopts a multi-section structure common in the prior art, specifically, the telescopic rod 2 comprises a plurality of hollow rods 2a which are sequentially nested together from inside to outside in the order of the diameters from small to large, as shown in the figure, the hollow rod 2a with the largest diameter is fixedly arranged in the mounting hole of the bracket 1, the hollow rod 2a with the relatively smaller diameter can be retracted into the hollow rod 2a with the relatively larger diameter, so that the telescopic rod 2 is integrally shortened, and the hollow rod 2a with the relatively smaller diameter can be extended out from the hollow rod 2a with the relatively larger diameter, so that the telescopic rod 2 is integrally lengthened.
The liver-raking sheet 4 comprises a bottom sheet 4a capable of keeping a scroll state by means of elasticity of the liver-raking sheet 4 and a soft protective layer 4b attached to the surface of the bottom sheet 4a, the soft protective layer 4b can be stretched after being pulled by external force and can be retracted after the external force is cancelled, the middle part of the bottom sheet 4a is fixedly connected to a support 1, hoses 3 positioned on the left side and the right side of the support 1 are respectively and fixedly connected to the left half part and the right half part of the bottom sheet 4a, the left half part of the bottom sheet 4a is wound into a scroll shape from left to right, the right half part of the bottom sheet 4a is wound into a scroll shape from right to left, and the hoses 3 fixedly connected to the bottom sheet 4a are also wound.
The springs 5 are arranged in the telescopic rods 2 one by one, and the telescopic rods 2 can be pushed to extend by the elastic force of the springs 5 and inserted into the corresponding hoses 3, so that the hoses 3 bent into a scroll shape and the bottom sheets 4a are stretched to be in a straight state.
Act as go-between 6 also one-to-one wears to establish in telescopic link 2, and the 2 front ends of telescopic link are connected to the one end of 6 acting as go-between, and the other end is worn out and is penetrated the chamber 1a of acting as go-between from the rear end of telescopic link 2, when pulling behind and act as go-between 6, can make telescopic link 2 retract shorten and make spring 5 compressed.
The spooler 7 is installed at the latter half of support 2, and spooler 7 includes take-up pulley 7a and with take-up pulley 7a fixed connection's knob 7b, all rear ends of acting as go-between 6 all convolute on take-up pulley 7a, when rotatory knob makes the take-up pulley rotate, can realize the rolling of acting as go-between 6 and unreel.
In practice, the bottom sheet 4a can be cut from a PVC film that has been previously heat-bent into a scroll shape. The flexible tube 3 may be a PVC flexible tube, and the flexible tube 3 and the bottom sheet 4a may be ultrasonically welded together. The bracket 1 can be formed by injection molding of PVC, and the rear end of the hose 3 and the side wall of the bracket 1 can also be welded together by ultrasonic welding. Soft protective layer 4b can adopt silica gel to make, it is too big to avoid the adhesion force between soft protective layer 4b and the liver, can set up graininess arch (not shown in the figure) at the surface interval of soft protective layer 4b, protruding height can be between 0.3mm-1mm, the diameter can be between 0.5 mm-1.5mm, when needs are with soft protective layer 4b and liver separation, if the adhesion force between the two is great, can also pour with normal saline and drench, normal saline can ooze to between soft protective layer 4b and the liver from the space between the protruding granule, thereby reduce the adhesion between the two. The hollow rod 2a of the telescopic rod 2 is preferably made of stainless steel, but may be made of plastic (e.g., PP).
It should be noted that, because the abdominal opening size is generally about 2-2.5cm during laparoscopic surgery, when actually manufacturing the liver scraping device, it should be noted that the sizes of the components are controlled, for example, the width of the stent 1 in the figure can be controlled to be 1cm, the thickness of the bottom sheet 4a can be controlled to be 0.25mm, the width after unfolding can be controlled to be about 6cm, the thickness of the soft protective layer 4b can be controlled to be 0.1mm, the inner diameter of the flexible tube 3 can be controlled to be 2mm, and the outer diameter can be controlled to be 2.4mm (the flexible tube 3 with gradually reduced inner and outer diameters can also be adopted), so that the size of the front half section of the liver scraping device can be basically controlled to be within 2.5cm after the liver scraping sheet 4 is folded. When the portable liver scrabbling device is in practical use, in an initial state, the liver scrabbling piece 4 is wound into a scroll shape, the size of the liver scrabbling device is small, the liver scrabbling device can extend into an abdominal cavity from an opening of the abdomen of a patient, when the front half section of the liver scrabbling device extends into the abdominal cavity, the wire rewinding device 7 is unlocked firstly, then the knob 7b is rotated in vitro to enable the wire rewinding wheel 7a to unwind, the spring 5 also extends gradually and pushes the telescopic rod 2 to extend and insert into the flexible pipe 3 along with the gradual extension of the pull wire 6, and the flexible pipe 3 and the negative plate 4a of the liver scrabbling piece 4 are fixedly connected, so that in the process that the telescopic rod 2 inserts into the flexible pipe 3, the flexible pipe 3 and the negative plate 4a are gradually stretched to be in. When the liver is taken off, the soft protective layer 4b of the liver taking-off piece 4 is attached to the liver lobe, and then the liver tissue blocking the operative field can be removed by holding the rear half section of the bracket 1 to move and/or rotate the liver taking-off piece 4. When the liver scrabbling device needs to be withdrawn from the abdominal cavity, the wire rewinding device 7 is unlocked firstly, the knob 7b is rotated in vitro to wind the wire rewinding wheel 7a, the telescopic rod 2 is gradually shortened along with the gradual winding of the pull wire 6, the spring 5 is compressed, the bottom sheet 4a is gradually curled under the action of the self resilience force in the process that the telescopic rod 2 is withdrawn from the hose 3, and after the telescopic rod 2 is completely withdrawn from the hose 3, the liver scrabbling sheet 4 is restored to the scroll shape, the liver scrabbling device can be withdrawn through the opening of the abdominal part of the patient.
The liver raking device provided in the above embodiment has a large contact area with the liver, the liver lobe is not easy to slip in the liver raking process, and the operation is convenient. In addition, the liver scrabbling device is simple in structure and can be used as a disposable surgical instrument, and the liver scrabbling device can accurately control the unfolding and folding of the liver scrabbling piece through the wire collecting device, so that the condition that the liver and other organs are bruised due to inaccurate motion control and overlarge motion amplitude in the unfolding and folding processes of the liver scrabbling piece can be better avoided, and the reliability is further improved.
In addition, for the purpose of convenience, as shown in fig. 2, the left half and the right half of the base sheet 4a are preferably bent in a scroll shape toward the side of the stent 1, so that when the liver scratcher is used, the flexible protective layer 4b can be first attached to the liver, and then the wire-rewinding device 7 is operated to unwind the liver scratcher 4 to a desired width. When the soft protective layer 4b is slightly adhered to the liver, the liver-protecting sheet 4b can be separated from the liver by controlling the wire-rewinding device 7 to wind and furl the liver-protecting sheet 4, and the separation is not assisted by flushing normal saline.
As shown in fig. 4 and 5, for the purpose of facilitating production and assembly, a telescopic rod fixing sleeve 8 is embedded in a mounting hole of a support 1, a partition plate 8a is arranged in the telescopic rod fixing sleeve 8, the partition plate 8a separates an inner cavity of the telescopic rod fixing sleeve 8 into a front cavity and a rear cavity, a hollow rod 2a with the largest diameter in a telescopic rod 2 is embedded in the front cavity, a roller 9 is arranged in the rear cavity (the roller 9 plays the role of a fixed pulley), a threading hole is formed in the partition plate 8a, and a threading wire 6 passes through the threading hole along the left and right direction and then passes around the roller 9 to enter the threading cavity 1a downwards. Finally, also for the purpose of protecting the organ tissues, in order to avoid the damage of the organ tissues caused by the collision of the stent 1, a soft protective layer 4b can be coated on the surface of the front half section of the stent 1.
The above embodiments are preferred implementations of the present invention, and any obvious substitutions without departing from the spirit of the present invention are within the scope of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (9)
1. Laparoscopic surgery takes off liver ware, its characterized in that includes:
the pull wire support comprises a strip-shaped support (1), wherein a pull wire cavity (1 a) is formed in the support (1), and a plurality of groups of mounting holes communicated with the pull wire cavity (1 a) are symmetrically formed in the left side and the right side of the front half section of the support (1);
the telescopic rods (2) are arranged at intervals, each telescopic rod (2) comprises a plurality of hollow rods (2 a) which are sequentially nested together from inside to outside according to the sequence of the diameters from small to large, the hollow rod (2 a) with the largest diameter is fixedly arranged in a mounting hole of the support (1), the hollow rod (2 a) with the relatively smaller diameter can be retracted into the hollow rod (2 a) with the relatively larger diameter to enable the telescopic rods (2) to be integrally shortened, and the hollow rod (2 a) with the relatively smaller diameter can extend out of the hollow rod (2 a) with the relatively larger diameter to enable the telescopic rods (2) to be integrally lengthened;
the flexible hoses (3) extend in the left-right direction, the front ends of the flexible hoses (3) are closed, the rear ends of the flexible hoses (3) are fixedly connected with the side walls of the support (1), the openings of the rear ends of the flexible hoses (3) are opposite to the telescopic rods (2), and the telescopic rods (2) can be inserted from the openings of the rear ends of the flexible hoses (3) when being extended, so that the bent flexible hoses (3) are stretched to be straight;
the liver-raking sheet (4) comprises a bottom sheet (4 a) capable of keeping a vortex state by means of elasticity of the liver-raking sheet and a soft protection layer (4 b) attached to the surface of the bottom sheet (4 a), wherein the soft protection layer (4 b) can be stretched after being pulled by external force and can be contracted after being withdrawn by the external force, the middle part of the bottom sheet (4 a) is fixedly connected to a support (1), hoses (3) positioned on the left side and the right side of the support (1) are fixedly connected to the left half part and the right half part of the bottom sheet (4 a) respectively, the left half part of the bottom sheet (4 a) is wound into a vortex shape from left to right, the right half part of the bottom sheet (4 a) is wound into a vortex shape from right to left, and the hoses (3) fixedly connected to the bottom sheet (4 a) are also wound into a vortex shape along with the bottom sheet;
the springs (5) are arranged in the telescopic rod (2) one by one, the telescopic rod (2) is pushed to extend by the elasticity of the springs (5) and is inserted into the corresponding hose (3), and the hose (3) bent into a scroll shape and the bottom sheet (4 a) are stretched to be in a straight state;
the pull wires (6) are correspondingly arranged in the telescopic rod (2) in a penetrating mode one by one, one end of each pull wire (6) is connected with the front end of the telescopic rod (2), the other end of each pull wire penetrates out of the rear end of the telescopic rod (2) and penetrates into the corresponding pull wire cavity (1 a), and the pull wires (6) are pulled backwards to enable the telescopic rod (2) to retract and shorten and enable the springs (5) to be compressed;
lockable take-up device (7) is installed the latter half of support (2), take-up device (7) including take-up pulley (7 a) and with take-up pulley (7 a) fixed connection's knob (7 b), all rear ends of acting as go-between (6) all wind on take-up pulley (7 a), it is rotatory the knob makes the take-up pulley rotate can realize the rolling of acting as go-between (6) and unreel.
2. The laparoscopic surgical hepaticator of claim 1, wherein: the left half part and the right half part of the bottom sheet (4 a) are bent into a scroll shape towards one side of the bracket (1).
3. The laparoscopic surgical hepaticator of claim 1, wherein: inlay in the mounting hole and establish the fixed cover of telescopic link (8), be equipped with baffle (8 a) in the fixed cover of telescopic link (8), cavity and back cavity before baffle (8 a) separate into the inner chamber of the fixed cover of telescopic link (8), in the cavity before the biggest hollow rod of diameter (2 a) embedding, be equipped with a gyro wheel (9) in the back cavity, the through wires hole has been seted up on baffle (8 a), stay wire (6) pass in following the through wires hole along left right direction and pass again in gyro wheel (9) down get into in the chamber of acting as go-between (1 a).
4. The laparoscopic surgical hepaticator of claim 1, wherein: the surface of the front half section of the bracket (1) is also coated with a soft protective layer (4 b).
5. The laparoscopic surgical hepatits remover according to any one of claims 1 to 4, wherein: the bottom sheet (4 a) is cut by PVC film which is pre-heated and bent into scroll shape.
6. The laparoscopic surgical hepaticator of claim 5, wherein: the hose (3) is a PVC hose, and the hose (3) and the bottom sheet (4 a) are welded together through ultrasonic waves.
7. The laparoscopic surgical hepaticator of claim 6, wherein: the support (1) is obtained by PVC injection molding, and the rear end of the hose (3) is welded with the side wall of the support (1) through ultrasonic waves.
8. The laparoscopic surgical hepatits remover according to any one of claims 1 to 4, wherein: the soft protective layer (4 b) is made of silica gel, granular protrusions are arranged on the outer surface of the soft protective layer at intervals, the height of each protrusion is 0.3mm-1mm, and the diameter of each protrusion is 0.5 mm-1.5 mm.
9. The laparoscopic surgical hepatits remover according to any one of claims 1 to 4, wherein: the hollow rod (2 a) of the telescopic rod (2) is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205226.4A CN110916734B (en) | 2019-11-29 | 2019-11-29 | Liver removing device for laparoscopic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205226.4A CN110916734B (en) | 2019-11-29 | 2019-11-29 | Liver removing device for laparoscopic surgery |
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| Publication Number | Publication Date |
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| CN110916734A true CN110916734A (en) | 2020-03-27 |
| CN110916734B CN110916734B (en) | 2020-08-28 |
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| CN201911205226.4A Active CN110916734B (en) | 2019-11-29 | 2019-11-29 | Liver removing device for laparoscopic surgery |
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