CN117731370A - Surgical knife - Google Patents

Abstract

The invention discloses a scalpel, which belongs to the field of medical instruments and aims to solve the problems that the length of a blade extending out of a scalpel handle of the existing device cannot be adjusted, the angle of the blade cannot be adjusted, and the use of medical staff is inconvenient; the tool comprises a tool handle, wherein a cavity is formed in the tool handle, and an opening communicated with the cavity is formed in one end of the tool handle; a sliding seat is embedded in the cavity in a sliding manner, and one end of the sliding seat facing the opening is rotationally connected with a blade through a rotating shaft; the knife handle is also provided with an angle adjusting device and a length adjusting device; the angle adjusting device is used for adjusting the rotating angle of the rotating shaft; the length adjusting device is used for driving the sliding seat to move along the length direction of the cutter handle; according to the invention, the angle and the length of the blade are conveniently adjusted by the operator through the arranged angle adjusting device and the length adjusting device, so that doctors can conveniently master the depth and the angle of the lower knife.

Description

Surgical knife

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a surgical knife.

Background

Surgical knives used by surgeons in hospitals include blades and knife handles. The blade is disposable and the handle is not.

The patent number CN202022746829.X discloses a surgical knife mainly comprising a sliding column, a blocking block, a surgical blade, a fixed block, a spring and the like, wherein the blocking block is contracted inwards by extruding the sliding column, then the surgical blade is pushed to be taken down, a new surgical blade is placed above the blade fixed block, the surgical blade is pressed, the blocking block is extruded, the blocking block is contracted, the blocking block bounces under the action of a reset spring after the surgical blade is assembled, the surgical blade is fixed, and the surgical blade can be replaced more quickly, so that the surgical progress is not influenced;

although the blade can be quickly replaced by the device, the length of the blade extending out of the cutter handle cannot be adjusted, and a doctor cannot well master the depth of the cutter when in operation; secondly, the angle of blade can not be adjusted, is inconvenient for medical personnel to use.

Disclosure of Invention

In view of the above, the invention provides a scalpel to solve the problems that the length and angle of the blade of the existing scalpel cannot be adjusted, and the use of medical staff is inconvenient.

The technical scheme adopted by the invention is as follows:

the scalpel comprises a scalpel handle, wherein a cavity is formed in the scalpel handle, and an opening communicated with the cavity is formed in one end of the scalpel handle; a sliding seat is embedded in the cavity in a sliding manner, and one end of the sliding seat facing the opening is rotationally connected with a blade through a rotating shaft;

the knife handle is also provided with an angle adjusting device and a length adjusting device; the angle adjusting device is used for adjusting the rotating angle of the rotating shaft; the length adjusting device is used for driving the sliding seat to move along the length direction of the cutter handle.

In the technical scheme, the sliding seat is in sliding connection with the cavity, the sliding seat can be provided with a sliding block, the inner wall of the cavity is provided with a limit groove for sliding and embedding the sliding block, and the sliding direction of the sliding seat is along the length direction of the cutter handle; the blade is detachably connected with the sliding seat, so that the blade is convenient to replace and can be made of ceramic materials; secondly, the top of the knife handle is provided with a top cover which is detachably connected with the knife handle, the top cover is detachably connected with the knife handle, and particularly, the top cover can be connected through bolts, so that a worker can conveniently open the knife handle, and the parts in the knife handle can be replaced or maintained; in this scheme, when length and the angle of blade need be adjusted, angle adjusting device and length adjusting device can be passed through respectively and angle and length of blade is adjusted, and the doctor of being convenient for grasps the degree of depth and the angle of cutting off.

Preferably, the length adjusting device comprises a turntable and a hinging rod, the center of the turntable is rotationally connected to a fixed shaft, the fixed shaft is fixedly connected with the inner wall of the cavity, a notch through which the side wall of the turntable can penetrate is formed in the outer wall of the handle, one end of the hinging rod is hinged with the sliding seat, the other end of the hinging rod is hinged with one end of the turntable, and the hinging position of the hinging rod and the turntable is deviated from the center of the turntable; the knife handle is also provided with a fixing device for fixing the rotary table.

In the technical scheme, the fixed shaft is arranged along the width direction of the knife handle, the fixed shaft is fixedly connected with the knife handle, the turntable is rotationally connected with the fixed shaft through a bearing, a plurality of anti-slip edges are arranged on the side wall of the turntable, so that medical staff can conveniently rotate the turntable to adjust the depth of the blade, one part of the turntable penetrates out of the knife handle from the notch, the medical staff can rotate the turntable through rotating the part, and the hinging rod is arranged along the length direction of the knife handle; in this scheme, when the length of blade needs to be adjusted, staff's rotating turntable drives the slide through articulated pole after the carousel rotates and slides along the length direction of cavity, and the slide removes and then drives the blade and remove to reach the degree of depth that adjusting blade stretches into in the handle of a knife, rethread fixing device is fixed the carousel at last, makes the blade can be fixed, guarantees the stability in the operation process, prevents that the staff from bumping by mistake.

Preferably, one end of the rotary table is provided with a circular groove, one end of the fixed shaft is positioned at the center of the circular groove, the inner side wall of the circular groove is provided with a plurality of limiting sheets, the limiting sheets are arranged at intervals along the circumferential direction of the circular groove, and a slot is formed between two adjacent limiting sheets; the fixing device comprises an insertion assembly and a driving assembly; the inserting assembly comprises an inserting sheet, the inserting sheet is arranged on the side wall of the fixed shaft, and one end of the inserting sheet is inserted into the inserting groove; the driving assembly is used for driving the inserting sheet to move out of the slot.

In this technical scheme, it is to be noted that, circular slot and carousel coaxial setting, during initial state, the carousel is fixed state, and the inserted sheet inserts in the slot promptly for the carousel is spacing by the inserted sheet, thereby reaches the purpose of fixed carousel, and when the spacing to the carousel is removed to needs, through drive assembly with the inserted sheet shift out outside the slot can.

Preferably, the insertion assembly further comprises a mounting plate, a spring and a moving seat; the mounting plate is arranged on the side wall of the fixed shaft, the mounting plate is provided with a through groove, the movable seat is embedded in the through groove in a sliding manner, the inserting piece is arranged at the top of the movable seat, one end of the spring is connected with the bottom of the movable seat, and the other end of the spring is connected with the bottom of the through groove. The movable seat is provided with a guide groove at one end far away from the circular groove, the bottom of the guide groove is provided with a guide surface, and the guide surface is obliquely arranged upwards along the direction close to the circular groove; the driving assembly comprises an extrusion sheet and a moving column, the extrusion sheet is arranged in the cavity and faces the guide surface, one end of the moving column is connected with the guide surface, the other end of the moving column penetrates through the handle of the knife in a sliding mode, and the moving column is elastically connected with the handle of the knife through an elastic piece.

In the technical scheme, the mounting plate is arranged along the radial direction of the fixing shaft, the arrangement direction of the through groove is consistent with the arrangement direction of the mounting plate, the guide surface is a slope, the moving column is arranged along the width direction of the knife handle, the end part of the moving column is provided with a limiting disc, one end of the elastic piece is connected with the limiting disc, the other end of the elastic piece is connected with the knife handle, and the extrusion piece is arranged on the limiting disc; in this scheme, the carousel is fixed state when initial state, in the inserted sheet inserts the slot, thereby the carousel is spacing by the inserted sheet, thereby reach the purpose of fixed carousel, when the length of blade needs be adjusted, when needs rotation carousel promptly, then press the movable column with a finger, move the movable column towards the direction that is close to the carousel promptly, it is close to the guide surface gradually to remove the pole drive extrusion piece, after extrusion piece and guide surface contact, because the guide surface is the slope, consequently, extrusion piece can give a decurrent power to the guide surface, and then drive the movable seat and move downwards, and compress the spring, make the movable seat drive the inserted sheet move downwards, and outside the slot of moving, and then the limit of inserted sheet to the carousel has been removed, at this moment, the staff presses the finger of movable column and continues to keep the pressing force to the movable column, then reuse thumb or other finger rotatory carousel's top lateral wall, make the carousel rotate, the carousel rotates and then drive the slide through the transmission of articulated lever and moves and then drive the blade and move along the length direction of handle, make the blade get into degree of depth of adjusting, after the adjustment, unclamp the finger, reset under the effect of spring, and insert under the effect of inserting slot, and reset column under the effect of insert. In this scheme, can single hand operation, reach the carousel of rotation and fixed carousel effect promptly.

Preferably, the fixing device is a plurality of fixing devices, and the plurality of fixing devices are arranged at intervals along the circumferential direction of the fixing shaft.

In this technical scheme, it is to be noted that, fixing device is a plurality of, can insert the inserted sheet in the slot and have a plurality ofly, sets up like this and can further increase the resistance of inserted sheet to the carousel, improves the stability of carousel, prevents that the staff from bumping by mistake.

Preferably, the rotary table is provided with graduated scales, the graduated scales are arranged at intervals along the circumferential direction of the rotary table, and the knife handle is provided with pointers matched with the graduated scales.

In this technical scheme, it is to be noted that, the scale includes a plurality of scale marks, and the below of scale mark is equipped with the digit (not shown in the figure), and every digit promptly represents the length that the blade stretches out outside the handle of a knife, and in this scheme, the scale of two adjacent scale marks is 1mm, can assist the staff to judge the length that the blade stretches out outside the handle of a knife through scale and the pointer that sets up.

Preferably, each scale mark on the scale is opposite to the position of each limiting piece one by one.

In this technical scheme, it is to be noted that, because spacing piece has thickness, consequently, after rotatory carousel, the inserted sheet is very likely to appear and the slot skew, the inserted sheet does not face the slot promptly, but the condition of the tip of spacing piece is faced, after loosening the post this moment, spacing piece can upwards move under the effect of spring, but, at this moment, because spacing piece is relative with the position of inserted sheet, make the inserted sheet can not insert in the slot, even make the carousel can not obtain fixedly, based on this, in this scheme, with the position one-to-one setting of every spacing piece, like this, because represent the minimum unit of scale between two adjacent scale marks, namely 1mm, represent the mobilizable minimum distance of scalpel is 1mm, therefore, no matter how many angles of rotatory carousel, as long as guarantee that the pointer points to a certain scale mark, then one of a plurality of slots can be relative with the inserted sheet all the time, then can guarantee to loosen and insert in the slot under the effect of spring after removing the post, guarantee the stability of carousel.

Preferably, the angle adjusting device comprises a gear and a rack, the gear is fixedly sleeved on the rotating shaft, the rack is in sliding connection with the sliding seat, and the rack is meshed with the gear; still be equipped with the screw rod on the slide, the screw rod rotates with the slide to be connected, screw rod and rack threaded connection, just the top of handle of a knife is equipped with the bar hole that can supply the screw rod to wear out, the bar hole sets up along the length direction of handle of a knife. The gear is two, two the gear is located the both ends of pivot respectively and the symmetry sets up, the quantity and the gear correspondence of rack, and two the rack passes through the link and connects.

In this technical scheme, it is to be noted that still be equipped with the guide post on the slide, the rack passes through link and guide post sliding connection, in this scheme, the angle of the blade of being convenient for be adjusted through screw rod, rack and the gear that sets up, and during the concrete operation, rotatable screw rod, screw rod drive rack removal, rack removal drive gear rotation, drive the pivot rotation after the gear rotation, the pivot rotation then drives the blade and rotate certain angle.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. according to the invention, the angle and the length of the blade are conveniently adjusted by the operator through the arranged angle adjusting device and the length adjusting device, so that doctors can conveniently master the depth and the angle of the lower knife.

2. According to the invention, when the length of the blade needs to be adjusted, a worker rotates the turntable, the turntable drives the sliding seat to slide along the length direction of the cavity through the hinging rod after rotating, the sliding seat moves to drive the blade to move so as to adjust the depth of the blade extending into the knife handle, and finally the turntable is fixed through the fixing device, so that the blade is fixed, the stability in the operation process is ensured, and the false touch of the worker is prevented.

3. According to the invention, through the guide surface, the spring, the inserting sheet, the moving column, the elastic piece and the like, not only can the fixation and the release of the turntable be realized, but also the operation can be realized by using only one hand of an operator, thereby being convenient and quick.

4. According to the invention, the number of the fixing devices is multiple, namely, the number of the inserting pieces which can be inserted into the slots is multiple, so that the resistance of the inserting pieces to the turntable can be further increased, the stability of the turntable is improved, and the misoperation of workers is prevented.

5. According to the invention, the positions of the scale marks and each limiting piece are arranged in a one-to-one opposite mode, so that no matter how many angles of the rotary table are rotated, as long as the pointer points to a certain scale mark, one of the slots is always opposite to the inserting piece, and the inserting piece can be inserted into the slot under the action of the spring after the moving column is loosened, and the stability of the rotary table is ensured.

6. According to the invention, the angle of the blade is convenient to adjust through the screw rod, the rack and the gear, and in specific operation, the screw rod can be rotated, the screw rod drives the rack to move, the rack moves to drive the gear to rotate, and the rotating shaft is driven to rotate after the gear rotates, so that the rotating shaft rotates to drive the blade to rotate by a certain angle.

Drawings

The invention will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic side elevation view of the present invention;

FIG. 3 is a schematic cross-sectional perspective view of the present invention;

FIG. 4 is a schematic perspective view of a connection structure between a turntable and a slider of the present invention;

FIG. 5 is a schematic view of a cutting perspective of the turntable and the knife handle of the present invention;

FIG. 6 is a schematic perspective view of the fixing device and turntable of the present invention;

FIG. 7 is a schematic perspective view of a turntable according to the present invention;

FIG. 8 is a schematic perspective view of a movable base and a movable column according to the present invention;

FIG. 9 is a schematic perspective view of a mobile seat according to the present invention;

fig. 10 is a schematic perspective view of an angle adjusting device of the present invention.

In the figure: 10-knife handle, 11-knife blade, 12-top cover, 13-bar slot, 14-pointer, 15-notch, 16-cavity, 20-screw, 21-guide post, 22-rack, 23-gear, 24-spindle, 25-connecting frame, 30-turntable, 31-anti-slip edge, 32-scale, 321-scale mark, 33-circular slot, 34-spacing piece, 341-slot, 35-fixed axle, 36-mounting plate, 361-through slot, 362-spring, 363-insert piece, 364-moving seat, 365-guide slot, 366-guide surface, 40-moving post, 41-elastic piece, 42-spacing disc, 43-extrusion piece, 50-slide, 51-hinge rod, 99-opening.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a 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 "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.

Example 1

1-10, the embodiment of the invention discloses a scalpel, which comprises a scalpel handle 10, wherein a cavity 16 is arranged in the scalpel handle 10, and one end of the scalpel handle 10 is provided with an opening communicated with the cavity 16; a sliding seat 50 is embedded in the cavity 16 in a sliding manner, and one end of the sliding seat 50 facing the opening is rotatably connected with a blade 11 through a rotating shaft 24; the knife handle 10 is also provided with an angle adjusting device and a length adjusting device; the angle adjusting device is used for adjusting the rotating angle of the rotating shaft 24; the length adjusting device is used for driving the sliding seat 50 to move along the length direction of the knife handle 10. It should be noted that, the sliding seat 50 is slidably connected with the cavity 16, a sliding block can be arranged on the sliding seat 50, a limit groove for sliding and embedding the sliding block is arranged on the inner wall of the cavity 16, and the sliding direction of the sliding seat 50 is along the length direction of the knife handle 10; the blade 11 is detachably connected with the slide seat 50, so that the blade 11 is convenient to replace, and the blade 11 can be made of ceramic materials; secondly, the top of the tool handle 10 is provided with a top cover 12 which is detachably connected with the tool handle 10, the top cover 12 is detachably connected with the tool handle 10, and particularly, the top cover 12 can be connected through bolts, so that a worker can conveniently open the tool handle 10 to replace or maintain the components in the tool handle; in this scheme, when the length and the angle of blade 11 need be adjusted, angle and the length of blade 11 can be adjusted through angle adjusting device and length adjusting device respectively, and the doctor of being convenient for master the degree of depth and the angle of cutting.

In this embodiment, as shown in fig. 2 and 3, the length adjusting device includes a turntable 30 and a hinge rod 51, the center of the turntable 30 is rotatably connected to a fixed shaft 35, the fixed shaft 35 is fixedly connected to the inner wall of the cavity 16, a notch 15 through which the sidewall of the turntable 30 can pass is provided on the outer wall of the handle 10, one end of the hinge rod 51 is hinged to the slide 50, the other end is hinged to one end of the turntable 30, and the hinge position of the hinge rod 51 and the turntable 30 is deviated from the center of the turntable 30; the handle 10 is also provided with a fixing device for fixing the turntable 30. It should be noted that, the fixed shaft 35 is arranged along the width direction of the knife handle 10, the fixed shaft 35 is fixedly connected with the knife handle 10, the rotary table 30 is rotationally connected with the fixed shaft 35 through a bearing, a plurality of anti-slip ribs 31 are arranged on the side wall of the rotary table 30, so that a medical staff can conveniently rotate the rotary table 30 to adjust the depth of the blade 11, a part of the rotary table 30 penetrates out of the knife handle 10 from the notch 15, the medical staff can rotate the rotary table 30 by rotating the part, and the hinged rod 51 is arranged along the length direction of the knife handle 10; in this scheme, when the length of blade 11 needs to be adjusted, the carousel 30 is rotated to the staff, drives slide 50 through articulated rod 51 after the carousel 30 rotates and slides along the length direction of cavity 16, and slide 50 removes and then drives the blade 11 and remove to reach the degree of depth that adjusting blade 11 stretched into in the handle of a knife 10, rethread fixing device is fixed carousel 30 at last, makes blade 11 fixed, guarantees the stability of operation in-process, prevents that the staff from bumping by mistake.

In this embodiment, as shown in fig. 4-8, one end of the turntable 30 is provided with a circular groove 33, one end of the fixed shaft 35 is located at the center of the circular groove 33, the inner side wall of the circular groove 33 is provided with a plurality of limiting pieces 34, the plurality of limiting pieces 34 are arranged at intervals along the circumferential direction of the circular groove 33, and a slot 341 is formed between two adjacent limiting pieces 34; the fixing device comprises an insertion assembly and a driving assembly; the insertion assembly comprises an insertion piece 363, the insertion piece 363 is arranged on the side wall of the fixed shaft 35, and one end of the insertion piece 363 is inserted into the slot 341; the driving component is used for driving the inserting piece 363 to move out of the slot 341. It should be noted that, the circular groove 33 is coaxially disposed with the turntable 30, and in an initial state, the turntable 30 is in a fixed state, i.e. the insert 363 is inserted into the slot 341, so that the turntable 30 is limited by the insert 363, thereby achieving the purpose of fixing the turntable 30, and when the limitation of the turntable 30 is required to be released, the insert 363 is moved out of the slot 341 through the driving assembly.

As shown in fig. 6-9, in this embodiment, the insert assembly further includes a mounting plate 36, a spring 362, and a travel seat 364; the mounting plate 36 is disposed on a side wall of the fixed shaft 35, a through groove 361 is disposed on the mounting plate 36, the movable seat 364 is slidably embedded in the through groove 361, the insert 363 is disposed on top of the movable seat 364, one end of the spring 362 is connected with the bottom of the movable seat 364, and the other end is connected with the bottom of the through groove 361. A guide groove 365 is formed at one end of the moving seat 364 far away from the circular groove 33, a guide surface 366 is formed at the bottom of the guide groove 365, and the guide surface 366 is obliquely arranged upwards along the direction approaching to the circular groove 33; the driving assembly comprises a squeezing piece 43 and a moving column 40, wherein the squeezing piece 43 is arranged in the cavity 16 and faces the guiding surface 366, one end of the moving column 40 is connected with the guiding surface 366, the other end of the moving column passes through and slides out of the knife handle 10, and the moving column 40 is elastically connected with the knife handle 10 through an elastic piece 41. It should be noted that, the mounting plate 36 is disposed along the radial direction of the fixing shaft 35, the direction of the disposition of the through groove 361 is consistent with the direction of the disposition of the mounting plate 36, the guiding surface 366 is a slope, the moving column 40 is disposed along the width direction of the tool shank 10, the end of the moving column 40 is provided with the limiting plate 42, one end of the elastic member 41 is connected with the limiting plate 42, the other end is connected with the tool shank 10, and the extruding sheet 43 is disposed on the limiting plate 42; in this scheme, the carousel 30 is fixed state during initial state, namely insert 363 inserts in slot 341, make carousel 30 by insert 363 spacing, thereby reach the purpose of fixed carousel 30, when the length of blade 11 needs to be adjusted, namely when needs rotate carousel 30, then press down movable column 40 with a finger, move movable column 40 towards the direction that is close to carousel 30, movable column 40 drives the extrusion piece 43 and is close to guide surface 366 gradually, after extrusion piece 43 contacts with guide surface 366, because guide surface 366 is the slope, consequently extrusion piece 43 can give guide surface 366 a decurrent power, and then drive movable seat 364 and compress spring 362, make movable seat 364 drive insert 363 down move, and remove outside of slot 341, and then release insert 363 to the limit of carousel 30, at this moment, the staff presses down the finger of movable column 40 and keeps the pressing force to movable column 40, then reuse thumb or other rotatory carousel 30's top lateral wall, make carousel 30 rotate and then drive slide 50 along the length direction of handle 10 through articulated pole 51 and move, consequently, the effect of blade 11 is moved down in the direction of guide surface 366, and then drive movable seat 362 moves down, and then the spring 362 drives insert 363 down moves under the effect of insert 363, and the effect of spring 362 is adjusted under the effect of insert plug 11, and the elastic plug-in the slot 341 is adjusted. I.e. in this solution one-hand operation is possible, achieving the effect of rotating the turntable 30 as well as of fixing the turntable 30.

In this embodiment, as shown in fig. 6, a plurality of fixing devices are provided, and a plurality of fixing devices are disposed at intervals along the circumferential direction of the fixing shaft 35. It should be noted that, the fixing device is a plurality of, that is, the insert 363 can be inserted into the slot 341 is a plurality of, so that the resistance of the insert 363 to the turntable 30 can be further increased, the stability of the turntable 30 is improved, and the personnel is prevented from touching by mistake.

In this embodiment, as shown in fig. 1, the turntable 30 is provided with scales 32, the scales 32 are arranged at intervals along the circumferential direction of the turntable 30, and the knife handle 10 is provided with a pointer 14 matched with the scales 32. It should be noted that, the scale 32 includes a plurality of scale marks 321, a number (not shown in the figure) is disposed below the scale marks 321, each number represents the length of the blade 11 extending out of the tool handle 10, in this scheme, the scale marks of two adjacent scale marks 321 are 1mm, and the staff can be assisted to determine the length of the blade 11 extending out of the tool handle 10 through the set scale 32 and the pointer 14.

In this embodiment, as shown in fig. 1, each scale line 321 on the scale 32 is opposite to each position of each limiting plate 34.

It should be noted that, because the limiting piece 34 has a thickness, when the turntable 30 is rotated, the situation that the inserting piece 363 deviates from the inserting grooves 341, that is, the inserting piece 363 does not face the inserting grooves 341 but faces the end of the limiting piece 34 is likely to occur, and at this moment, after the moving post 40 is loosened, the limiting piece 34 moves upwards under the action of the spring 362, however, at this moment, because the position of the limiting piece 34 is opposite to the position of the inserting piece 363, the inserting piece 363 cannot be inserted into the inserting grooves 341, that is, the turntable 30 cannot be fixed, and therefore, in the scheme, the positions of the scale lines 321 and each limiting piece 34 are oppositely arranged one by one, therefore, since the minimum unit of the scale 32 is represented between two adjacent scale lines 321, that is, 1mm, and the minimum distance of the movable knife is represented by 1mm, no matter how much the turntable 30 is rotated, the pointer 14 is guaranteed to point to a certain scale line 321, then one of the inserting pieces 341 is always opposite to the inserting piece 363 after the moving post 40 is loosened, the inserting piece 341 can be inserted into the inserting groove 341 under the action of the spring 362, and the stability of the turntable 30 is guaranteed.

Example 2

As shown in fig. 10, the present embodiment is substantially the same as the above embodiment, except that the angle adjusting device includes a gear 23 and a rack 22, the gear 23 is fixedly sleeved on the rotating shaft 24, the rack 22 is slidably connected with the slide 50, and the rack 22 is meshed with the gear 23; the sliding seat 50 is also provided with a screw rod 20, the screw rod 20 is rotationally connected with the sliding seat 50, the screw rod 20 is in threaded connection with the rack 22, the top of the knife handle 10 is provided with a strip-shaped hole through which the screw rod 20 can penetrate, and the strip-shaped hole is arranged along the length direction of the knife handle 10. The number of the gears 23 is two, the two gears 23 are respectively positioned at two ends of the rotating shaft 24 and are symmetrically arranged, the number of the racks 22 corresponds to that of the gears 23, and the two racks 22 are connected through the connecting frame 25. It should be noted that, the slide 50 is further provided with a guide post 21, the rack 22 is slidably connected with the guide post 21 through the connecting frame 25, in this scheme, the angle of the blade 11 is convenient to be adjusted through the screw 20, the rack 22 and the gear 23, and during specific operation, the screw 20 can be rotated, the screw 20 drives the rack 22 to move, the rack 22 moves to drive the gear 23 to rotate, the gear 23 rotates to drive the rotating shaft 24 to rotate, and the rotating shaft 24 rotates to drive the blade 11 to rotate by a certain angle.

The working principle of the invention

1. The length of the adjusting blade 11:

in the initial state, the turntable 30 is in a fixed state, namely the inserting piece 363 is inserted into the inserting groove 341, so that the turntable 30 is limited by the inserting piece 363, and the purpose of fixing the turntable 30 is achieved;

when the length of the blade 11 needs to be adjusted, that is, when the turntable 30 needs to be rotated, the moving column 40 is pressed by a finger, that is, the moving column 40 is moved towards the direction approaching to the turntable 30, the moving column 40 drives the squeezing sheet 43 to gradually approach to the guide surface 366, after the squeezing sheet 43 contacts with the guide surface 366, the squeezing sheet 43 gives a downward force to the guide surface 366 due to the slope of the guide surface 366, and further drives the moving seat 364 to move downwards, and compresses the spring 362, so that the moving seat 364 drives the inserting sheet 363 to move downwards and move out of the channel slot 341, and further releases the limit of the inserting sheet 363 on the turntable 30, at this time, the worker presses the finger of the moving column 40 to keep pressing force on the moving column 40, and then rotates the top side wall of the turntable 30 by using the thumb or other fingers, so that the turntable 30 rotates, and the worker observes the moving length of the blade 11 through the pointer 14 and the scale; the rotary table 30 rotates to drive the sliding seat 50 to move along the length direction of the tool handle 10 through the transmission of the hinging rod 51, the sliding seat 50 moves to drive the blade 11 to move, the depth of the blade 11 entering the tool handle 10 is adjusted, after the adjustment is finished, the finger is loosened, the inserting piece 363 is reset under the action of the spring 362 and inserted into the slot 341, and the moving column 40 is reset under the action of the elastic piece 41. Namely, the scheme can be operated by one hand, and the effects of rotating the turntable 30 and fixing the turntable 30 are achieved;

2. adjusting the angle of the blade 11

The screw rod 20 is rotated, the screw rod 20 drives the rack 22 to move, the rack 22 moves to drive the gear 23 to rotate, the rotating shaft 24 is driven to rotate after the gear 23 rotates, and the rotating shaft 24 rotates to drive the blade 11 to rotate by a certain angle.

The circuit, the electronic components and the modules are all in the prior art, and can be completely realized by a person skilled in the art, and needless to say, the protection of the invention does not relate to the improvement of software and a method.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The scalpel is characterized by comprising a scalpel handle (10), wherein a cavity (16) is formed in the scalpel handle (10), and an opening (99) communicated with the cavity (16) is formed in one end of the scalpel handle (10);

a sliding seat (50) is embedded in the cavity (16) in a sliding manner, and one end of the sliding seat (50) facing the opening (99) is rotatably connected with a blade (11) through a rotating shaft (24);

an angle adjusting device and a length adjusting device are also arranged on the knife handle (10);

the angle adjusting device is used for adjusting the rotating angle of the rotating shaft (24);

the length adjusting device is used for driving the sliding seat (50) to move along the length direction of the cutter handle (10);

the length adjusting device comprises a rotary table (30) and a hinging rod (51), wherein the center of the rotary table (30) is rotationally connected to a fixed shaft (35), the fixed shaft (35) is fixedly connected with the inner wall of a cavity (16), a notch (15) through which the side wall of the rotary table (30) can penetrate is formed in the outer wall of the tool handle (10), one end of the hinging rod (51) is hinged to a sliding seat (50), the other end of the hinging rod is hinged to one end of the rotary table (30), and the hinged position of the hinging rod (51) and the rotary table (30) is deviated from the center of the rotary table (30);

the knife handle (10) is also provided with a fixing device for fixing the rotary disc (30).

2. A scalpel according to claim 1, wherein one end of the turntable (30) is provided with a circular groove (33), one end of the fixed shaft (35) is positioned at the center of the circular groove (33), the inner side wall of the circular groove (33) is provided with a plurality of limiting sheets (34), the limiting sheets (34) are arranged at intervals along the circumferential direction of the circular groove (33), and a slot (341) is formed between two adjacent limiting sheets (34);

the fixing device comprises an insertion assembly and a driving assembly;

the insertion assembly comprises an insertion sheet (363), the insertion sheet (363) is arranged on the side wall of the fixed shaft (35), and one end of the insertion sheet (363) is inserted into the slot (341);

the driving component is used for driving the inserting piece (363) to move out of the slot (341).

3. The scalpel of claim 2, wherein the insertion assembly further comprises a mounting plate (36), a spring (362), and a travel seat (364);

the mounting plate (36) is arranged on the side wall of the fixed shaft (35), a through groove (361) is formed in the mounting plate (36), the movable seat (364) is embedded in the through groove (361) in a sliding mode, the inserting piece (363) is arranged at the top of the movable seat (364), one end of the spring (362) is connected with the bottom of the movable seat (364), and the other end of the spring is connected with the bottom of the through groove (361).

4. A scalpel according to claim 3, wherein the end of the movable seat (364) remote from the circular groove (33) is provided with a guide groove (365), the bottom of the guide groove (365) is provided with a guide surface (366), and the guide surface (366) is arranged obliquely upwards in the direction approaching the circular groove (33);

the driving assembly comprises an extrusion sheet (43) and a moving column (40), wherein the extrusion sheet (43) is arranged in the cavity (16) and faces the guide surface (366), one end of the moving column (40) is connected with the guide surface (366), the other end of the moving column penetrates through the knife handle (10) in a sliding mode, and the moving column (40) is elastically connected with the knife handle (10) through an elastic piece (41).

5. A scalpel according to any one of claims 1 to 4, wherein the plurality of fixing means are provided at intervals along the circumference of the fixed shaft (35).

6. A scalpel according to claim 2, wherein the turntable (30) is provided with scales (32), the scales (32) are arranged at intervals along the circumference of the turntable (30), and the scalpel handle (10) is provided with pointers (14) matched with the scales (32).

7. A scalpel according to claim 6, wherein each scale mark (321) on the scale (32) is located in a one-to-one correspondence with each stop tab (34).

8. A scalpel according to any one of claims 1-4, wherein the angle adjusting device comprises a gear (23) and a rack (22), the gear (23) is fixedly sleeved on the rotating shaft (24), the rack (22) is slidably connected with the sliding seat (50), and the rack (22) is meshed with the gear (23);

still be equipped with screw rod (20) on slide (50), screw rod (20) are connected with slide (50) rotation, screw rod (20) and rack (22) threaded connection, just the top of handle of a knife (10) is equipped with the bar hole that can supply screw rod (20) to wear out, bar hole sets up along the length direction of handle of a knife (10).

9. A scalpel according to claim 8, wherein the number of the gears (23) is two, the two gears (23) are respectively located at two ends of the rotating shaft (24) and symmetrically arranged, the number of the racks (22) corresponds to the number of the gears (23), and the two racks (22) are connected through the connecting frame (25).