CN110575233B

CN110575233B - Minimally invasive surgical knife for surgical operation

Info

Publication number: CN110575233B
Application number: CN201910792132.5A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Individual
Current assignee: Bai Jie
Priority date: 2018-07-19
Filing date: 2018-07-19
Publication date: 2023-07-14
Anticipated expiration: 2038-07-19
Also published as: CN110575233A; CN109009340B; CN109009340A

Abstract

The invention provides a minimally invasive scalpel for surgical operation. The minimally invasive surgical knife for surgical operation comprises a knife handle, a blade, a placement structure and an adjusting structure, wherein a sliding groove is formed in one side of the knife handle, the blade is partially contained in the knife handle, the placement structure is adjacent to the knife handle, the adjusting structure is movably located in the sliding groove, the adjusting structure is used for sliding when a user slides the adjusting structure, the adjusting structure drives the blade to stretch or shorten, and the placement structure is used for placing the knife handle. The minimally invasive surgical knife for surgical operation has the telescopic function.

Description

Minimally invasive surgical knife for surgical operation

Technical Field

The invention relates to the technical field of medical instruments, in particular to a minimally invasive scalpel for surgical operation.

Background

The minimally invasive surgical knife is suitable for being applied to the medical and health fields of hospitals, reproductive centers, delivery rooms and the like, and is used for performing operations such as gynecological examination and ET (embryo transfer). The blade in the existing minimally invasive scalpel is relatively fixed and not easy to adjust, and the possibility of accidental injury is caused because the surgical blade is relatively sharp.

Disclosure of Invention

In view of the above, it is necessary to provide a minimally invasive surgical knife for surgical operation, which has a blade with a telescoping function.

The utility model provides a minimally invasive surgery sword for surgery, includes handle of a knife, blade, places structure and regulation structure, the sliding tray has been seted up to one side of handle of a knife, blade part accept in the handle of a knife, place the structure be adjacent to the handle of a knife, the regulation structure movably is located in the sliding tray, the regulation structure is used for when the user slides regulation structure, the regulation structure drives the blade extends or shortens, place the structure is used for placing the handle of a knife.

Further, the adjusting structure comprises a cylinder, an operating part and a fixing rod, wherein the cylinder penetrates through the sliding groove, a circular hole is formed in the cylinder, a fixing cavity is formed in the inner cavity of the circular hole, the operating part is located at one end of the cylinder, and the fixing rod is located in the fixing cavity.

Further, the adjusting structure further comprises a clamping disc, wherein the clamping disc is located at one end, away from the operating part, of the cylinder, and the clamping disc abuts against one side wall of the knife handle.

Further, a telescopic opening is formed in the knife handle, and the blade part is accommodated in the telescopic opening.

Further, the blade penetrates through the telescopic opening and extends to the sliding groove, a mounting opening is formed in the blade, and the mounting opening corresponds to the sliding groove in position.

Further, the cylinder is arranged in the mounting opening in a penetrating way through the sliding groove.

Further, the knife handle is made of alloy materials.

Further, the surfaces of the tool handles are provided with magnetic coatings, and the thickness of the magnetic coatings is 0.1-0.3 mm.

Further, a plurality of friction wire body sections are arranged on one side of the clamping disc, which is abutted against the side wall of the knife handle.

Further, the friction wire body sections are arc-shaped and are staggered with each other.

The minimally invasive surgical knife for the surgical operation is provided with the adjusting structure, the adjusting structure is movably arranged in the sliding groove, after the operation is finished, a user can drive the blade to extend or shorten through the sliding adjusting structure, and the possibility of accidental injury is avoided; by the placement structure, the surgical knife can be placed in the placement structure after surgery, and the surgical knife is convenient to store.

The adjusting structure comprises a cylinder, an operation part and a fixing rod, wherein the cutter handle is provided with a telescopic opening, the blade part is accommodated in the telescopic opening and extends to the sliding groove, the blade is provided with a mounting opening, the mounting opening corresponds to the sliding groove in position, the cylinder is penetrated in the mounting opening through the sliding groove, the cylinder is provided with a circular hole, an inner cavity of the circular hole forms a fixing cavity, the fixing rod is positioned in the fixing cavity, the operation part is positioned at one end of the cylinder, and the clamping disc is positioned at one end of the cylinder far away from the operation part. When the cutter is used, a user slides the operation part by hand, and the operation part slides back and forth in the sliding groove, so that the cutter blade is driven to stretch out and draw back; the round hole is formed in the cylinder, the inner cavity of the round hole forms a fixing cavity, and the fixing rod is located in the fixing cavity, so that the strength and hardness of the cylinder are improved.

The clamping disc is located the one end of keeping away from the operating portion on the drum, and the clamping disc supports with the handle of a knife and holds, and the one side that supports with the handle of a knife lateral wall on the clamping disc is provided with a plurality of friction line body sections, and friction line body section is arc form and crisscross each other to increased the sliding resistance of operating portion in the sliding tray, thereby the blade slides easily when avoiding the operation, thereby influences the progress of operation and guarantees the accuracy of operation.

Drawings

The invention is further described below with reference to the drawings and examples.

FIG. 1 is a schematic view of the structure of a minimally invasive surgical knife according to the present invention; and

fig. 2 is a schematic structural view of a minimally invasive surgical knife for surgical operation according to an embodiment.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" 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.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present invention provides a minimally invasive surgical knife 100 for surgical operation, which includes a knife handle 10, a blade 20, a placement structure 30 and an adjustment structure 40, wherein the knife handle is made of alloy material, magnetic coatings (not shown) are disposed on the surface of the knife handle, the thickness of the magnetic coatings is 0.1-0.3 mm, a sliding groove 11 is disposed on one side of the knife handle, a telescopic opening (not shown) is further disposed on the knife handle, the blade penetrates through the telescopic opening and extends to the sliding groove, a mounting opening (not shown) is disposed on the blade, the mounting opening corresponds to the position of the sliding groove, the placement structure is adjacent to the knife handle, the adjustment structure is movably disposed in the sliding groove, and the adjustment structure is used for driving the blade to extend or shorten when a user slides the adjustment structure.

It can be appreciated that the placement structure includes a fixing portion 31 and a rotating portion 32, the fixing portion is adjacent to the handle, a semicircular hole 311 is formed in the fixing portion, the rotating portion is located at the top of the fixing portion, the rotating portion is hinged to the fixing portion, the rotating portion and the fixing portion are made of magnetic materials, magnetic poles of the rotating portion are different from those of the fixing portion, and a semicircular hole 321 corresponding to the semicircular hole is formed in the rotating portion. On the one hand, the rotating part is arranged, the semicircular opening corresponds to the semicircular hole, when the rotating part rotates for a certain angle relative to the fixed part, the knife handle can be placed in the semicircular hole at the moment, then the rotating part is covered, at the moment, the semicircular opening on the rotating part and the semicircular hole on the fixed part form a placing cavity, and the knife handle is positioned in the placing cavity; on the other hand, because the magnetic poles of the rotating part are different from the magnetic poles of the fixing part, when the cutter handle is placed in the semicircular hole, the rotating part is covered, so that the connection between the rotating part and the fixing part is more stable. When the rotary handle is used by a user, the rotary part is rotated by a certain angle relative to the fixed part by two hands, the handle is placed in the semicircular hole, and then the rotary part is covered, so that the semicircular opening on the rotary part is clamped with the handle.

The adjusting structure comprises a cylinder 41, an operation part 42, a fixing rod 43 and a clamping disc (not shown in the figure), wherein the cylinder passes through the sliding groove and is penetrated in the mounting opening, a circular hole 311 is formed in the cylinder, a fixing cavity is formed in an inner cavity of the circular hole, the operation part is positioned at one end of the cylinder, the fixing rod is positioned in the fixing cavity, the clamping disc is positioned at one end of the cylinder far away from the operation part, the clamping disc is propped against one side wall of the cutter handle, a plurality of friction wire body sections are arranged on one side of the clamping disc, propped against the side wall of the cutter handle, and the friction wire body sections are arc-shaped and are mutually staggered.

The minimally invasive surgical knife for the surgical operation is provided with the adjusting structure, the adjusting structure is movably arranged in the sliding groove, after the operation is finished, a user can drive the blade to extend or shorten through the sliding adjusting structure, and the possibility of accidental injury is avoided; the adjusting structure comprises a cylinder, an operation part and a fixing rod, wherein the cutter handle is provided with a telescopic opening, the blade part is accommodated in the telescopic opening and extends to the sliding groove, the blade is provided with a mounting opening, the mounting opening corresponds to the sliding groove in position, the cylinder is penetrated in the mounting opening through the sliding groove, the cylinder is provided with a circular hole, an inner cavity of the circular hole forms a fixing cavity, the fixing rod is positioned in the fixing cavity, the operation part is positioned at one end of the cylinder, and the clamping disc is positioned at one end of the cylinder far away from the operation part. When the cutter is used, a user slides the operation part by hand, and the operation part slides back and forth in the sliding groove, so that the cutter blade is driven to stretch out and draw back; the cylinder is provided with a circular hole, the inner cavity of the circular hole forms a fixed cavity, and the fixed rod is positioned in the fixed cavity, so that the strength and the hardness of the cylinder are improved; the clamping disc is positioned at one end of the cylinder far away from the operating part, the clamping disc is propped against the knife handle, a plurality of friction wire body sections are arranged on one side of the clamping disc propped against the side wall of the knife handle, and the friction wire body sections are arc-shaped and are mutually staggered, so that the sliding resistance of the operating part in the sliding groove is increased, the blade is prevented from easily sliding during operation, the operation progress is influenced, and the operation accuracy is ensured; after the operation is finished, the rotary part is arranged, the semicircular opening corresponds to the semicircular hole, when the rotary part rotates for a certain angle relative to the fixed part, the knife handle can be placed in the semicircular hole, then the rotary part is covered, at the moment, the semicircular opening on the rotary part and the semicircular hole on the fixed part form a placing cavity, and the knife handle is positioned in the placing cavity; it can be understood that, because the magnetic poles of the rotating part are different from the magnetic poles of the fixing part, when the tool handle is placed in the semicircular hole, the rotating part is covered, so that the connection between the rotating part and the fixing part is more stable. When the rotary handle is used by a user, the rotary part is rotated by a certain angle relative to the fixed part by two hands, the handle is placed in the semicircular hole, and then the rotary part is covered, so that the semicircular opening on the rotary part is clamped with the handle.

It can be understood that with the development of medical devices, the types of medical devices are greatly expanded, and with the pursuit of life quality, the requirements of people on the medical devices are higher and higher, and the functions of the medical devices are also more and more. Firstly, because the scalpel is a necessary tool for a doctor to do an operation, the scalpel handle is often polluted by a plurality of times of touching of the doctor, and the blade of the scalpel touches the blood of a patient; because the patient needs a long time for operation, the doctor needs to hold the handle all the time in a long operation time period, and even if the doctor wears gloves for operation, the doctor also has the possibility of infection of the affected part along with dirt; secondly, in one operation, doctors often need to switch surgical knives with different specifications according to different wound sizes on an affected part, if the surgical knives are not switched timely, normal implementation of the operation can be affected, so that the accuracy of the operation is affected, and even the life health of a patient is affected; finally, after the operation is finished, the surgical knife is often required to be placed, if not placed, the surgical knife is often lost, and in order to prevent dirt on the placement tool from infecting the knife, the placement tool is often required to be cleaned, so that the placement tool is kept clean and clean.

Referring to fig. 2, for example, in order to avoid that dirt on a hand infects a cutter and indirectly infects an affected part when a doctor performs an operation, a first moving groove 12 and a second moving groove (not shown) are respectively formed in two side walls of the handle away from the blade, the second moving groove is located at the top of the first moving groove, the minimally invasive surgical knife further includes a cleaning assembly 50 located on the handle, and the cleaning assembly is used for pushing the cleaning assembly by a user's hand during the operation so that the cleaning assembly slides in the first moving groove and the second moving groove respectively, and the cleaning assembly cleans two side walls of the handle, and includes two dust removing structures 44, two cylinders, two operating parts, two fixing rods and two clamping discs. The two dust removing structures are respectively positioned on two side walls of the knife handle far away from the blade, one dust removing structure is in butt joint with the side wall of one side of the first moving groove, the other dust removing structure is in butt joint with the side wall of one side of the second moving groove, the dust removing structures comprise a protective layer (not shown), a refrigerating layer (not shown), a plurality of active adsorption bodies (not shown) and an elastic adsorption film (not shown), the protective layer is made of a material with good water resistance, moving holes (not shown) are formed in the protective layer, the moving holes respectively penetrate through the refrigerating layer and the elastic adsorption film, the refrigerating layer is positioned in the protective layer, refrigerating liquid (not shown) is arranged in an inner cavity of the refrigerating layer, in the embodiment, the refrigerating liquid is made of a solution mixed with water and dry ice, one side of the refrigerating layer is provided with a unidirectional injection film, when a user uses the unidirectional inner cavity, the unidirectional adsorption body can be used to the knife handle, the active adsorption bodies are in butt joint with the adhesive adsorption film (not shown) in the adhesive adsorption film, the adhesive adsorption film is arranged on one side of the adhesive adsorption film, and the adhesive adsorption film is arranged on one side of the adhesive adsorption film (not shown), the friction wire body groove is used for increasing friction between the elastic adsorption film and the cutter handle, so that dirt on the cutter handle can be better adhered through the adhesive layer. It can be understood that one of the protective layers is propped against the side wall of one side of the first moving groove through the elastic adsorption film, the moving holes on the protective layer are corresponding to the position of the first moving groove and are mutually communicated, the other protective layer is propped against the side wall of one side of the second moving groove through the elastic adsorption film, the moving holes on the protective layer are corresponding to the position of the second moving groove and are mutually communicated, the outer edge of the refrigerating layer forms a plurality of condensed air flows, and as the refrigerating layer is propped against the elastic adsorption film through the side wall of the protective layer, the plurality of condensed air flows can also enable the two side walls of the knife handle to generate tiny water drops while reducing the temperature of the two side walls of the knife handle, and when the adhesive layer on the elastic adsorption film is lowered in long-time use of the surgical knife, the elastic adsorption film can rub with the knife handle through the tiny water drops, so as to achieve the cleaning effect; because the refrigeration layer is arranged in the inner cavity of the protective layer, the protective layer has a good protective effect on the refrigeration layer, and even if the refrigeration layer is broken, the refrigeration liquid in the refrigeration layer can not flow onto the elastic adsorption film, so that the smooth operation is ensured. One of the cylinders is arranged in the moving hole of one of the dustproof structures in a penetrating manner through the first moving groove, the circular hole is formed in the cylinder, the inner cavity of the circular hole forms the fixing cavity, one of the fixing rods is positioned in the fixing cavity, one of the operating parts is positioned at one end of the cylinder, and one of the clamping discs is positioned at one end of the cylinder, which is far away from the operating part, and is propped against the side wall of the handle on one side of the first moving groove; the other cylinder is arranged in the moving hole of the other dustproof structure in a penetrating mode through the second moving groove, the circular hole is formed in the cylinder, the inner cavity of the circular hole forms the fixing cavity, the other fixing rod is located in the fixing cavity, the other operating portion is located at one end of the cylinder, and the other clamping disc is located at one end, away from the operating portion, of the cylinder and abuts against the side wall of the cutter handle on one side of the second moving groove. When the surgical knife is used, a user slides one of the operation parts by hand, one of the operation parts drives the dustproof structure on the cylinder to slide back and forth in the first moving groove or the second moving groove, the friction wire body groove increases friction between the elastic adsorption film and the knife handle, and the adhesive layer sticks dirt on two sides of the knife handle, and as the outer edge of the refrigeration layer forms a plurality of condensation air flows, the refrigeration layer is propped against the elastic adsorption film through the side wall of the protective layer, the plurality of condensation air flows can also enable the two side walls of the knife handle to generate tiny water drops while reducing the temperature of the two side walls of the knife handle, and when the viscosity of the adhesive layer on the elastic adsorption film is reduced in long-time use of the surgical knife, the elastic adsorption film can rub between the tiny water drops and the knife handle, so that a cleaning effect is achieved; because the refrigeration layer is arranged in the inner cavity of the protective layer, the protective layer has a good protective effect on the refrigeration layer, and even if the refrigeration layer is broken, the refrigeration liquid in the refrigeration layer can not flow onto the elastic adsorption film, so that the smooth operation is ensured.

For example, in order to facilitate the doctor to switch the scalpels of different specifications according to different wound sizes on the affected part during the operation, the minimally invasive scalpel further comprises a second blade 60 and a third blade (not shown), wherein the second blade and the third blade are used for the user to switch the scalpels of different specifications according to different wound sizes on the affected part while cleaning two side walls of the scalpel handle. It is to be understood that the size of the blade is greater than that of the second blade and greater than that of the third blade, the second blade and the third blade are both located in the telescopic opening on the handle, the second blade and the third blade are respectively provided with the mounting opening (not shown in the figure), the mounting opening on the second blade corresponds to the position of the first moving slot, the second blade is arranged in the telescopic opening in a penetrating manner and extends to the first moving slot, at this time, one of the cylinders sequentially penetrates through the first moving slot into the mounting opening on the second blade and one of the moving holes of the dustproof structure, the mounting opening on the third blade corresponds to the position of the second moving slot, the third blade penetrates through the telescopic opening and extends to the second moving slot, the other cylinder sequentially penetrates through the second moving slot into the mounting opening of the third blade, and the other cylinder sequentially penetrates through the second moving slot into the second blade and reaches the two different side walls of the same surgical knife handle, and the other cylinder is arranged on the same side wall, and the other side wall of the surgical knife can be changed to the same size. During the use, the user with one of them manual slip operation portion, one of them the operation portion drives dustproof construction on the drum is in first removal groove or the second removes the groove and makes a round trip to slide, friction line body groove is increasing elasticity adsorption membrane with when the friction between the handle of a knife, the sticky layer is pasted the dirt of handle of a knife both sides, simultaneously, when operation portion drives dustproof construction on the drum is in first removal groove or when the second removes the groove makes a round trip to slide, the second blade the third blade is in respectively after flexible stretches out and draws back to the user can switch the scalpel of different specifications according to the wound size of difference on the affected part and switch the scalpel of different specifications.

For example, in order to clean the placement tool, the placement structure further includes a third moving groove 33 located on the fixing portion, the one cylinder, the two dust removing structures, a first wire body, a second wire body and the two clamping discs, the third moving groove penetrates through two side walls of the fixing portion, the cylinder penetrates through the third moving groove, the two dust removing structures are located at two ends of the cylinder respectively, the two dust removing structures are abutted with two side walls of the fixing portion respectively, one end of the first wire body is sleeved on one end of the cylinder located in the third moving groove, the other end of the first wire body is sleeved between the cylinder located in the first moving groove and the clamping disc adjacent to the first moving groove, one end of the second wire body is sleeved on the other end of the cylinder located in the third moving groove, the other end of the second wire body is sleeved on the other end of the cylinder located in the second moving groove and the clamping disc adjacent to the second wire body is sleeved between the second wire body and the two clamping discs, and the other end of the second wire body is sleeved between the second wire body and the two clamping discs and the outer edge of the cylinder can be prevented from moving. During the use, the user with one of them manual slip operation portion, one of them the operation portion drives dustproof construction on the drum is in the back and forth slip in the first removal groove or the second removal groove, friction line body groove is increasing the elasticity adsorption film with when the friction between the handle of a knife, the sticky layer is stuck the dirt of handle of a knife both sides, simultaneously, works as the operation portion drives dustproof construction on the drum is in the back and forth slip in the first removal groove or the second removal groove, the second blade the third blade is in respectively flexible after the flexible, thereby the user can switch the scalpel of different specifications according to the wound size of difference on the affected part, and further, works as the operation portion drives dustproof construction on the drum is in when the back and forth slip in the first removal groove or the second removal groove, first line body with the second line body drives and is located in the drum slides in the third removal groove, thereby drives the dust removal structure is located in the back and forth slip in the second removal groove is in the back and forth slip in the second removal groove, thereby the sticky layer can be reached to the two side is fixed to the sticky layer is passed through to the capillary bead is fixed to the two side of the sticky layer can be reached to the fixed with the adhesive bead is fixed to the two side of the capillary air flow can be down to the sticky layer is fixed to the side can be reached to the adhesive bead is down the side down.

When a user uses the minimally invasive scalpel, the user slides one of the operation parts by hand, one of the operation parts drives the dustproof structure on the cylinder to slide back and forth in the first moving groove or the second moving groove, the friction wire body groove increases friction between the elastic adsorption film and the scalpel handle, the adhesive layer sticks dirt on two sides of the scalpel handle, and as the outer edge of the refrigerating layer forms a plurality of condensed air flows, the refrigerating layer is propped against the elastic adsorption film through the side walls of the protective layer, the temperature of the two side walls of the scalpel handle is reduced by the plurality of condensed air flows, fine small water drops are generated on the two side walls of the scalpel handle, and when the viscosity of the adhesive layer on the elastic adsorption film is reduced by using the scalpel for a long time, the elastic adsorption film can rub between the fine water drops and the scalpel handle, so that a cleaning effect is achieved; because the refrigeration layer is arranged in the inner cavity of the protective layer, the protective layer has a good protective effect on the refrigeration layer, and even if the refrigeration layer is broken, the refrigeration liquid in the refrigeration layer can not flow onto the elastic adsorption film, so that the smooth operation is ensured.

When the user further uses the minimally invasive scalpel, the user slides one of the operation parts by hand, one of the operation parts drives the dustproof structure on the cylinder to slide back and forth in the first moving groove or the second moving groove, the friction wire body groove is used for increasing friction between the elastic adsorption film and the scalpel handle, the adhesive layer is used for adhering dirt on two sides of the scalpel handle, and meanwhile, when the operation part drives the dustproof structure on the cylinder to slide back and forth in the first moving groove or the second moving groove, the second blade and the third blade are respectively stretched and contracted after stretching and contracting, so that the user can switch the scalpels with different specifications according to the sizes of wounds on affected parts to switch the scalpels with different specifications.

When the user further uses the minimally invasive scalpel, when the operation part drives the dustproof structure on the cylinder to slide back and forth in the first moving groove or the second moving groove, the first wire body and the second wire body drive the cylinder positioned in the third moving groove to slide back and forth, so that the adhesive layers on the dustproof structure positioned on two sides of the cylinder are driven to adhere to dirt on two sides of the fixing part, and the condensed air flows can also enable the two side walls of the fixing part to generate tiny water drops while reducing the temperature of the two side walls of the fixing part, even if the viscosity of the adhesive layer on the elastic adsorption film is reduced, the elastic adsorption film can rub between the tiny water drops and the fixing part, so that the cleaning effect is achieved.

The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A minimally invasive surgical knife for use in surgery, comprising: the automatic cutting machine comprises a cutter handle, a blade, a placement structure and an adjusting structure, wherein a sliding groove is formed in one side of the cutter handle, the blade is partially contained in the cutter handle, the placement structure is adjacent to the cutter handle, the adjusting structure is movably located in the sliding groove, the adjusting structure is used for driving the blade to extend or shorten when a user slides the adjusting structure, and the placement structure is used for placing the cutter handle; the adjusting structure comprises a cylinder, an operating part and a fixing rod, wherein the cylinder penetrates through the sliding groove, a circular hole is formed in the cylinder, a fixing cavity is formed in the inner cavity of the circular hole, the operating part is located at one end of the cylinder, and the fixing rod is located in the fixing cavity; the adjusting structure further comprises a clamping disc, wherein the clamping disc is positioned at one end, away from the operating part, of the cylinder, and the clamping disc is abutted against one side wall of the knife handle; the knife handle is also provided with a telescopic opening, and the blade part is accommodated in the telescopic opening; the blade penetrates through the telescopic opening and extends to the sliding groove, a mounting opening is formed in the blade, and the mounting opening corresponds to the sliding groove in position; the cylinder is arranged in the mounting opening in a penetrating way through the sliding groove;

the two side walls of the knife handle far away from the blade are respectively provided with a first moving groove and a second moving groove, the second moving groove is positioned at the top of the first moving groove, the minimally invasive surgical knife further comprises a cleaning component, the cleaning component is positioned on the knife handle and comprises two dust removing structures, two cylinders, two operation parts, two fixing rods and two clamping discs, the two dust removing structures are respectively positioned on the two side walls of the knife handle far away from the blade, one dust removing structure is abutted against the side wall of one side of the first moving groove, the other dust removing structure is abutted against the side wall of one side of the second moving groove, the two dust removing structures comprise a protective layer, a refrigerating layer, a plurality of active adsorption bodies and an elastic adsorption film, the two dust removing structures are respectively provided with moving holes, the moving holes penetrate through the refrigerating layer and the elastic adsorption film, the refrigerating layer is positioned in the protective layer, the inner cavity of the layer is provided with a liquid layer, the two dust removing structures are respectively abutted against the side wall of the knife handle, the adhesive layer is arranged on one side of the elastic adsorption film, the adhesive layer is correspondingly arranged on one side of the protective layer, the adhesive layer is abutted against the elastic adsorption film is arranged on one side of the elastic adsorption film, the adhesive layer is abutted against the adhesive layer, the adhesive layer is correspondingly arranged on one side of the adhesive layer is abutted against the elastic adsorption film, the adhesive layer is arranged on one side of the adhesive layer, the adhesive layer is abutted against the adhesive layer is respectively, the other protective layer is propped against the side wall at one side of the second movable groove through the elastic adsorption film, the movable holes on the protective layer correspond to the positions of the second movable groove and are mutually communicated, the outer edge of the refrigerating layer forms a plurality of condensed air flows, and one cylinder penetrates through the movable holes of one dust removing structure through the first movable groove;

the minimally invasive surgical knife further comprises a second blade and a third blade, wherein the second blade and the third blade are both positioned in the telescopic opening on the knife handle, the second blade and the third blade are respectively provided with the mounting opening, the mounting opening on the second blade corresponds to the position of the first moving groove, the second blade penetrates through the telescopic opening and extends to the first moving groove, at the moment, one cylinder penetrates through the first moving groove in sequence through the mounting opening on the second blade and one moving hole of the dust removing structure, the mounting opening on the third blade corresponds to the position of the second moving groove, the third blade penetrates through the telescopic opening and extends to the second moving groove, and the other cylinder penetrates through the second moving groove in sequence through the mounting opening on the third blade and the other moving hole of the dust removing structure.