CN106725749B - Micro-surgical knife with replaceable blade and blade angle adjusting function - Google Patents
Micro-surgical knife with replaceable blade and blade angle adjusting function Download PDFInfo
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- CN106725749B CN106725749B CN201710084994.3A CN201710084994A CN106725749B CN 106725749 B CN106725749 B CN 106725749B CN 201710084994 A CN201710084994 A CN 201710084994A CN 106725749 B CN106725749 B CN 106725749B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/3211—Surgical scalpels, knives; Accessories therefor
- A61B17/3213—Surgical scalpels, knives; Accessories therefor with detachable blades
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Abstract
The invention discloses a microsurgery knife capable of changing a blade and adjusting the angle of the blade, which comprises a connecting rod, the blade and a handle which are respectively arranged at two ends of the connecting rod, wherein an angle adjusting device is arranged between the connecting rod and the handle, the angle adjusting device comprises a first damping wheel, a second damping wheel, a damping shaft and a damping spring, two ends of the first damping wheel along the axial direction of the first damping wheel are respectively a first meshing end and a first non-meshing end, two ends of the second damping wheel along the axial direction of the second damping wheel are respectively a second meshing end and a second non-meshing end, the first meshing end is meshed with the second meshing end, one end of the damping spring is connected with the second non-meshing end, the distance from the other end of the damping spring to the first non-meshing end is fixedly arranged, and one end of the damping shaft is fixedly connected with the handle; when the connecting rod rotates relative to the handle, the second damping wheel can overcome the elasticity of the damping spring and is disengaged from the first damping wheel and then is meshed again.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a micro-scalpel with a replaceable blade and an adjustable blade angle.
Background
The conventional microsurgical knife has a straight shape as shown in fig. 1a and a gun shape as shown in fig. 1 b.
As shown in fig. 1a and 1b, in the conventional design of the microsurgical knife, the blade 1', the connecting rod 2' and the handle 3 'are integrated, and when the cutting edge of the blade 1' is blunt, the whole microsurgical knife is thrown away, so that great waste is caused and the cost for purchasing the microsurgical knife is increased; in actual operation, a micro-scalpel with a blade 1 'and a handle 3' having different relative bending angle directions is needed, in this case, a doctor needs to be equipped with micro-scalpels with different bending angle directions and the micro-scalpels with different bending directions need to be replaced in operation, thereby increasing operation time and being inconvenient to use.
Patent CN204890124U discloses a split type scalpel for neurosurgery, and the slot has been seted up to the front end of handle of a knife, and the rear portion of blade is equipped with the direction spout, corresponds in the slot to be equipped with the spacing boss with direction spout looks adaptation, and the spacing groove that extends along its width direction is still seted up at the rear portion of blade, and fixed connection and the elasticity spacing of spacing groove looks adaptation on the handle of a knife, from this through the cooperation of slot and direction spout and the cooperation of spacing groove and elasticity spacing realize the detachable of blade and handle of a knife and be connected. The detachable connecting structure of the scalpel is complex, is not easy to process and shape, and is not suitable for a slender rod-shaped micro scalpel.
Disclosure of Invention
The invention mainly aims to provide a micro-surgical knife with a replaceable blade and an adjustable blade angle, and aims to solve the problem that the existing micro-surgical knife cannot adjust the relative angle between the blade and a handle.
In order to achieve the above purpose, the invention provides a micro-surgical knife with a replaceable blade and an adjustable blade angle, which comprises a connecting rod, and a blade and a handle which are respectively arranged at two ends of the connecting rod, wherein an angle adjusting device is arranged between the connecting rod and the handle, the angle adjusting device comprises a first damping wheel, a second damping wheel, a damping shaft and a damping spring, two axial ends of the first damping wheel are respectively provided with a first meshing end and a first non-meshing end, two axial ends of the second damping wheel are respectively provided with a second meshing end and a second non-meshing end, the first meshing end is meshed with the second meshing end, one end of the damping spring is connected with the second non-meshing end, the distance from the other end of the damping spring to the first non-meshing end is fixedly arranged, and one end of the damping shaft is fixedly connected with the handle; when the first damping wheel is fixed on the connecting rod, the second damping wheel is fixed on the other end of the damping shaft, the damping spring is sleeved on the damping shaft, or when the second damping wheel is fixed on the connecting rod, the damping spring is sleeved on the connecting rod, and the first damping wheel is fixed on the other end of the damping shaft; when the connecting rod rotates relative to the handle, the second damping wheel can overcome the elasticity of the damping spring and is disengaged from the first damping wheel and then is meshed again.
Preferably, the angle adjusting device further comprises a damping wheel housing, the damping wheel housing is provided with a cylindrical damping through hole, the first damping wheel, the second damping wheel and the damping spring are accommodated in the damping through hole, a radial baffle is formed at one end of the damping through hole in the extending direction, a central hole for the connecting rod or the damping shaft to pass through is formed in the radial baffle, and the first damping wheel, the damping spring and the second damping wheel are accommodated in the damping through hole at the other end of the damping through hole in the extending direction, and a housing end cover is fixed.
Preferably, the angle adjusting device further comprises an adjusting knob, the adjusting knob is cylindrical, a knob mounting hole is formed in the adjusting knob along the axis direction of the adjusting knob, a knob through hole is formed in the adjusting knob along the radial direction of the adjusting knob, a first connecting rod through hole is formed in the side face of one end, close to the handle, of the connecting rod, the connecting rod penetrates through the knob mounting hole and penetrates through the knob through hole and the first connecting rod through hole through a first pin shaft, and therefore the adjusting knob is fixed on the connecting rod.
Preferably, one end of the damping shaft is provided with a second damping shaft through hole, a handle through hole is formed in the side face of the handle, a handle mounting hole is formed in the end face of the handle, one end of the damping shaft penetrates through the handle mounting hole and the second damping shaft through hole through a fourth pin shaft, and the damping shaft is fixedly connected with the handle.
Preferably, a second connecting rod through hole is formed in the side face of one end, close to the handle, of the connecting rod, a first damping wheel through hole is formed in the side face of the first damping wheel, a first damping wheel mounting hole is formed in the end face of the first damping wheel, a second damping wheel through hole is formed in the side face of the second damping wheel, a second damping wheel mounting hole is formed in the end face of the second damping wheel, and a first damping shaft through hole is formed in the other end of the damping shaft; when the first damping wheel is fixed on the connecting rod, the connecting rod penetrates through the first damping wheel mounting hole, the first damping wheel through hole and the second connecting rod through hole through a second pin shaft, and the damping shaft penetrates through the second damping wheel mounting hole, the second damping wheel through hole and the first damping shaft through hole through a third pin shaft; or when the second damping wheel is fixed on the connecting rod, the connecting rod penetrates through the second damping wheel mounting hole and the second connecting rod through hole through the third pin shaft, and the damping shaft penetrates through the first damping wheel mounting hole and the first damping shaft through hole through the second pin shaft.
Preferably, one end of the connecting rod, which is connected with the blade, is a blade mounting end, a step blind hole is formed in the side face of the blade mounting end, the step blind hole comprises a button cavity communicated with an orifice of the step blind hole and a spring cavity positioned at the bottom in the step blind hole, a third connecting rod through hole is formed in the end face of the blade mounting end, the third connecting rod through hole is communicated with the button cavity, and a button is arranged in the button cavity; the upper part of the side surface of the button is provided with a button blind hole, the lower part of the side surface of the button is provided with a button through hole, the extension directions of the button blind hole and the button through hole are perpendicular to the extension direction of the step blind hole, and the button is fixed in the step blind hole by penetrating through a third connecting rod through hole and the button blind hole through a fifth pin shaft; a boss is arranged on the inner side wall of the button through hole, and the extension plane of the boss is perpendicular to the axis of the mounting end of the blade; the end face of the blade mounting end is provided with a blade mounting hole, a cutter bar cavity is arranged in the blade mounting hole, and the cutter bar cavity is communicated with the button cavity; one end of the blade is a cutter bar, the cutter bar is provided with an annular groove, the cutter bar penetrates through the button through hole to be installed in the cutter bar cavity, and the groove of the cutter bar is matched with the boss of the button.
Preferably, the blade mounting hole further comprises a step cavity communicated with the hole opening of the blade mounting hole, the step cavity is communicated with the cutter bar cavity and has the same axis, and the step cavity is in a regular prism shape; the side wall of the cutter bar is also provided with a regular prism-shaped step which is matched with the step cavity.
Preferably, one end of the connecting rod connected with the blade is a blade mounting end, the end face of the blade mounting end is provided with a blade mounting hole, the inner cavity of the blade mounting hole is in a regular prism shape, and the side face of the blade mounting end is provided with a screw through hole; one end of the blade is a cutter bar, the outer circumferential surface of the cutter bar is in a regular prism shape and is matched with the cutter bar mounting hole, each side surface of the cutter bar is provided with a cutter bar blind hole, and the blade passes through the screw through hole and one cutter bar blind hole to be connected with the cutter bar mounting end through a cutter bar screw.
Preferably, the side surface of the damping wheel shell is provided with at least one shell holding plane, and the side surface of the handle is provided with at least one handle holding plane; or one side of the handle is provided with a concave surface.
Preferably, the connecting rod comprises a deformation part in the middle of the connecting rod, wherein the deformation part is made of plastic material and is used for changing the relative position of the blade and the handle when bending or changing the relative angle of the blade and the handle when twisting.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
1. in order to ensure that the sight of a doctor is good during operation, the connecting rod of the conventional micro-scalpel is usually designed into a bent shape, and when the blade needs different cutting-in directions, the micro-scalpel with the blade and the handle in different angle directions is replaced.
2. The angle adjusting device provided by the invention adopts the first damping wheel, the second damping wheel, the damping shaft and the damping spring to realize the relative rotation of the handle and the blade, the damping spring can be used for damping and dissipating energy when the first damping wheel and the second damping wheel rotate relatively, the angle adjusting device has very good automatic turning force and buffering force, the first damping wheel and the second damping wheel are meshed through a plurality of straight teeth with equal size, and rotate to different angles according to the requirement, so that the accuracy and the stability of the relative rotation of the handle and the blade are ensured.
3. According to the invention, the first damping wheel can be fixed at one end of the connecting rod, the second damping wheel can be fixed at one end of the handle through the damping shaft, the first damping wheel can be fixed at one end of the handle through the damping shaft, and the second damping wheel can be fixed at one end of the connecting rod, so that the relative rotation of the handle and the connecting rod can be realized.
4. The invention can be provided with a handle holding plane at the side surface of the handle or a shell holding plane at the side surface of the damping wheel shell so as to prevent slipping when the handle is held by a hand.
5. The blade mounting end is arranged to realize detachable connection of the blade and the connecting rod, the boss in the button is matched and clamped with the groove on the blade under the action of spring force during mounting, the blade is axially fixed, and the blade is radially fixed due to the fact that the blade is further provided with the right prismatic step, so that the blade is very stable and firm; when the blade edge is blunt, only the blade needs to be replaced, and the connecting rod and the handle can be used continuously, so that the operation cost is reduced; meanwhile, due to the fact that the cutter bar regular prism-shaped step is matched with the connecting rod regular prism-shaped blind hole, the connecting rod can be reloaded after the cutter blade is taken down to rotate by the angle, and the relative angle between the cutter blade and the handle can be adjusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1a is a schematic diagram of a prior art micro-scalpel.
Fig. 1b is a schematic structural diagram of a micro-scalpel in the background art.
Fig. 2 is a schematic perspective view of a replaceable blade and a micro-scalpel with an angle-adjustable blade according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 3a is an enlarged view of a in fig. 3.
Fig. 3B is an enlarged view of B in fig. 3.
Fig. 4 is an exploded view of fig. 2.
Fig. 5 is a cross-sectional view of the blade mounting end of the replaceable blade and angle-adjustable microsurgical blade of fig. 2.
Fig. 6 is a schematic perspective view of a button of the micro-scalpel of fig. 2 with a replaceable blade and an angle-adjustable blade.
Fig. 7 is a schematic perspective view of the replaceable blade and blade of the micro-scalpel of fig. 2 with the blade angled.
Fig. 8 is a cross-sectional view of a replaceable blade and a micro-scalpel with an adjustable blade angle according to a second embodiment of the present invention.
Fig. 8a is an enlarged view of C in fig. 8.
Fig. 9 is an exploded view of the three-dimensional structure of fig. 8.
Fig. 10 is an exploded view showing a connection structure between a blade and a connecting rod of a micro-scalpel with a replaceable blade and an angle-adjusting blade according to a third embodiment of the present invention.
Description of reference numerals in the background:
the reference numerals of the invention illustrate:
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention provides a micro-surgical knife with a replaceable blade and an adjustable blade angle.
Example 1
Fig. 2 is a schematic perspective view of a replaceable blade and a micro-scalpel with an angle-adjustable blade according to an embodiment of the present invention. Fig. 3 is a cross-sectional view of fig. 2. Fig. 3a is an enlarged view of a in fig. 3. Fig. 3B is an enlarged view of B in fig. 3. Fig. 4 is an exploded view of fig. 2.
Referring to fig. 2 to 4, the micro-surgical knife capable of changing the blade and adjusting the blade angle comprises a connecting rod 2, and a blade 1 and a handle 3 respectively arranged at two ends of the connecting rod 2, wherein an angle adjusting device is arranged between the connecting rod 2 and the handle 3.
The angle adjusting device comprises a first damping wheel 4, a second damping wheel 5, a damping shaft 6, a damping spring 7, a damping wheel shell 8 and an adjusting knob 9.
The side of one end of the connecting rod 2 is provided with a first connecting rod through hole 21 and a second connecting rod through hole 22, the side of the adjusting knob 9 is provided with a knob through hole 91, the axial center of the adjusting knob 9 is provided with a knob mounting hole 92, one end of the connecting rod 2 is arranged in the knob mounting hole 92 in a penetrating way, and a first pin shaft 93 penetrates through the knob through hole 91 and the first connecting rod through hole 21 so that the adjusting knob 9 is fixed on the connecting rod 2.
The two ends of the first damping wheel 4 along the axial direction are respectively a first meshing end 41 and a first non-meshing end 42, a first damping wheel through hole 43 is formed in the side surface of the first damping wheel 4, and a first damping wheel mounting hole 44 is formed in the axial center of the first damping wheel 4; the end of the second connecting rod through hole 22 of the connecting rod 2 is embedded in the first damping wheel mounting hole 44, and the second pin 45 passes through the first damping wheel through hole 43 and the second connecting rod through hole 22, so that the first damping wheel 4 is fixed on the connecting rod 2.
The two ends of the second damping wheel 5 along the axial direction are respectively a second meshing end 51 and a second non-meshing end 52, a second damping wheel through hole 53 is formed in the side surface of the second damping wheel 5, and a second damping wheel mounting hole 54 is formed in the axial center of the second damping wheel 5; the two ends of the damping shaft 6 are respectively provided with a first damping shaft through hole 61 and a second damping shaft through hole 62 which are perpendicular to the axial direction of the damping shaft 6, one end of the damping shaft 6 is arranged in the second damping wheel mounting hole 54, and the third pin shaft 55 passes through the second damping wheel through hole 53 and the first damping shaft through hole 61 so that the second damping wheel 5 is fixed on the damping shaft 6.
The damping spring 7 is sleeved on the damping shaft 6, and one end of the damping spring 7 is fixedly connected with the second non-meshing end 52 of the second damping wheel 5.
A handle mounting hole 31 is formed in the axial center of one end of the handle 3, and a handle through hole 32 perpendicular to the handle mounting hole 31 is formed in the side surface of one end of the handle 3; the other end of the damping shaft 6 is disposed in the handle mounting hole 31, and the fourth pin 33 passes through the handle through hole 32 and the second damping shaft through hole 62, so that the handle 3 is fixedly connected with the damping shaft 6.
A cylindrical damping through hole 81 is arranged in the damping wheel housing 8, the first damping wheel 4, the second damping wheel 5 and the damping spring 7 are accommodated in the damping through hole 81, a radial baffle 82 is formed at one end of the damping through hole 81 in the extending direction, a central hole for the connecting rod or the damping shaft to pass through is formed in the radial baffle 82, the radial baffle 82 is used for preventing the connecting rod 2 from moving axially relative to the first damping wheel 4, the damping spring 7 and the second damping wheel 5 are accommodated in the damping through hole 81 at the other end of the damping through hole in the extending direction, a housing end cover 83 is mounted, and the housing end cover 83 is fixed on the damping wheel housing 8 through a bolt 84; the first non-engaging end 42 of the first damper wheel 4 engages the radial stop 82. The radial baffle 82 is fixed from the housing end cover 83 to a distance from the first non-engagement end 42 to an end of the damping spring 7 adjacent to the housing end cover 83, when the damping spring 7 is rotationally compressed, the second damping wheel 5 is axially moved against the elastic force of the damping spring 7 by an axial component force, and is disengaged from the first damping wheel 4, and when the first damping wheel 4 and the second damping wheel 5 relatively rotate by a straight tooth angle, then are engaged with the first damping wheel 4 again.
The first engagement end 41 of the first damping wheel 4 is engaged with the second engagement end 51 of the second damping wheel 5, the first engagement end 41 is provided with a plurality of straight teeth around the axis, the number of the straight teeth can be 12 or 16 or 18, and the shape of the second engagement end 51 is the same as that of the first engagement end 41. When the first damping wheel 4 and the second damping wheel 5 are twisted relatively, an axial component force is generated between the first damping wheel 4 and the second damping wheel 5, and the axial component force can overcome the elastic force applied to the second damping wheel 5 by the damping spring 7, so that the second damping wheel 5 is separated from the first damping wheel 4.
The periphery of the handle 3 is in a straight cylinder shape, is approximately in a pen shape or is similar to a concave surface in shape, so that the concave surface corresponds to a hand and tiger mouth when the handle 3 is held, the design accords with the ergonomics, the holding mode is light and comfortable, the position can not be rotated at will, and the surface is provided with reticular patterns for preventing skidding.
Therefore, under normal conditions, the first damping wheel 4 and the second damping wheel 5 are meshed under the action of the elasticity of the damping spring 7, the adjusting knob 9 and the handle 3 are tightly connected with the damping wheel shell 8 under the action of the tension of the damping spring 7, relative rotation cannot occur, and the connection between the connecting rod 2 and the handle 3 is stable and firm. When the adjusting knob 9 is held by the left hand and the handle 3 is held by the right hand to be pulled outwards, the second damping wheel 5 overcomes the elasticity of the damping spring 7 and is separated from the first damping wheel 4, the adjusting knob 9 is rotated by the left hand, the connecting rod 2 rotates relative to the handle 3, and the blade 1 arranged at the end part of the connecting rod 2 rotates relative to the handle 3, so that the angle adjustment between the blade 1 and the handle 3 is realized. It is also possible that the handle 3 is held by the right hand, the adjusting knob 9 is directly rotated by the left hand, the axial component force between the meshing teeth of the first damping wheel 4 and the second damping wheel 5 can overcome the elastic force of the damping spring 7 to separate from each other, when the blade 1 is rotated to a required angle, the rotation is stopped, and the first damping wheel 4 and the second damping wheel 5 are re-meshed, so that stable angle adjustment of the blade 1 and the handle 3 is realized.
Fig. 5 is a cross-sectional view of the blade mounting end of the replaceable blade and angle-adjustable microsurgical blade of fig. 2. Fig. 6 is a schematic perspective view of a button of the micro-scalpel of fig. 2 with a replaceable blade and an angle-adjustable blade. Fig. 7 is a schematic perspective view of the replaceable blade and blade of the micro-scalpel of fig. 2 with the blade angled.
Referring to fig. 5 to 7, the other end of the connecting rod 2, which is away from the end provided with the first connecting rod through hole 21 and the second connecting rod through hole 22, is a blade mounting end 23, a step blind hole 231 is formed in the side surface of the blade mounting end 23, and the axis of the step blind hole 231 is perpendicular to and intersects with the axis of the blade mounting end 23; the step blind hole 231 comprises a button cavity 231a communicated with the orifice of the step blind hole 231 and a spring cavity 231b positioned at the bottom of the step blind hole 231, wherein a button 232 is arranged in the button cavity 231a, and a button spring 233 is arranged in the spring cavity 231 b; a third connecting rod through hole 234 is formed on the end face of the blade mounting end 23 along the extending direction, and the third connecting rod through hole 234 is communicated with the button cavity 231 a; the center of the end face of the tail end of the blade mounting end 23 is provided with a blade mounting hole 235, the blade mounting hole 235 comprises a step cavity 235a communicated with the orifice of the blade mounting hole 235 and a cutter bar cavity 235b positioned at the bottom of the blade mounting hole, the step cavity 235a is in a regular prism shape, and the cutter bar cavity 235b is communicated with the button cavity 231 a.
The upper part of the button 232 is provided with a button blind hole 232a, the lower part is provided with a button through hole 232b, the inner bottom end of the button through hole 232b is provided with a boss 232c, and the boss 232c can be arc-shaped or D-shaped; the fifth pin shaft 236 passes through the third connecting rod through hole 234 and the button blind hole 232a, so that the button 232 is mounted in the stepped blind hole 231, and the button 232 can slide back and forth under the action of an external force and the spring force of the button spring 233.
The two ends of the blade 1 along the extending direction of the blade are respectively provided with a blade 11 and a cutter bar 12, one end of the cutter bar 12, which is far away from the connecting rod 2, is provided with a step 13, the step 13 is in a regular prism shape, for example, a regular hexagonal prism shape, and the shape of the outer peripheral surface of the step 13 corresponds to and is matched with the shape of the inner wall of the step cavity 125 a; the middle part of the cutter bar 12 is provided with a groove 14.
Therefore, when the blade 1 needs to be mounted, the button 232 is pressed into the bottom of the stepped blind hole 231, the blade 1 is mounted in the blade mounting hole 235, the cutter bar 12 is matched with the cutter bar cavity 235b, the step 13 is matched with the step cavity 235a, the blade 1 and the connecting rod 2 cannot rotate, and then after the button 232 is released, the groove 14 is matched with the boss 232c, so that the blade 1 and the connecting rod 2 are axially fixed, and the mounting and fixing of the blade are realized.
Meanwhile, since the step 13 and the step cavity 235a are in a shape of a regular prism which are matched with each other, if the number of side edges of the regular prism is n, when the step 13 and the step cavity 235a relatively rotate 360/n degrees, the adjustment of the relative angle between the blade 1 and the handle 3 can be realized.
In the first embodiment, the step 13 is provided at the end of the blade 1, the blade mounting end 23 is provided at one end of the connecting rod 2, and the step may be provided on the connecting rod, without limitation, and the blade mounting end may be provided at the end of the blade 1.
The blade 1 is, without limitation, of a half-moon type, sickle type, hook type, pointed or other shape. The connecting rod 2 is straight or gun-shaped.
Example two
Fig. 8 is a cross-sectional view of a replaceable blade and a micro-scalpel with an adjustable blade angle according to a second embodiment of the present invention. Fig. 8a is an enlarged view of C in fig. 8. Fig. 9 is an exploded view of the three-dimensional structure of fig. 8.
Referring to fig. 8 to 9, the micro-surgical knife capable of changing the blade and adjusting the blade angle comprises a connecting rod 2a, and blades 1a and handles 3a respectively arranged at two ends of the connecting rod 2a, wherein an angle adjusting device is arranged between the connecting rod 2a and the handles 3a.
The second embodiment is different from the first embodiment in that:
the angle adjusting device comprises a first damping wheel 4a, a second damping wheel 5a, a damping spring 7a, a damping wheel housing 8a, an adjusting knob 9a and a damping shaft 6a.
A first connecting rod through hole 21a and a second connecting rod through hole 22a are formed in one end side surface of the connecting rod 2a, a knob through hole 91a is formed in the side surface of the adjusting knob 9a, and a first pin shaft 93a penetrates through the knob through hole 91a and the first connecting rod through hole 21a, so that the adjusting knob 9a is fixed on the connecting rod 2a.
The two ends of the second damping wheel 5a along the axial direction are respectively a second meshing end 51a and a second non-meshing end 52a, a second damping wheel through hole 53a is formed in the side surface of the second damping wheel 5a, and a second damping wheel mounting hole 54a is formed in the axial center of the second damping wheel 5 a.
The damping spring 7a is sleeved on the connecting rod 2a, and one end of the damping spring 7a is fixedly connected with the second non-meshing end 52a of the second damping wheel 5 a.
The third pin shaft 55a passes through the second damper wheel through hole 53a and the second link rod through hole 22a to fix the second damper wheel 5a to the link rod 2a.
The two ends of the first damping wheel 4a along the axial direction are respectively a first meshing end 41a and a first non-meshing end 42a, a first damping wheel through hole 43a is formed in the side surface of the first damping wheel 4a, and a first damping wheel mounting hole 44a is formed in the axial center of the first damping wheel 4a.
The axial center of one end of the handle 3a is provided with a handle mounting hole 31a, and one end side surface of the handle 3a is provided with a handle through hole 32a perpendicular to the handle mounting hole 31 a.
A first damping shaft through hole 61a and a second damping shaft through hole 62a are respectively formed at two ends of the side surface of the damping shaft 6a, the second pin shaft 45a penetrates through the first damping wheel through hole 43a and the first damping shaft through hole 61a, and the fourth pin shaft 33a penetrates through the handle through hole 32a and the second damping shaft through hole 62a, so that the first damping wheel 4a is fixedly connected with the handle 3a.
A cylindrical damping through hole 81a is arranged in the damping wheel housing 8a, the first damping wheel 4a, the second damping wheel 5a and the damping spring 7a are accommodated in the damping through hole 81a, a radial baffle 82a is formed at one end opening of the damping through hole 81a in the extending direction, and a housing end cover 83a is arranged at the other end opening of the damping through hole 81a in the extending direction; the first non-engaging end 42a of the first damper wheel 4a engages the radial baffle 82 a.
The first engagement end 41a of the first damping wheel 4a is engaged with the second engagement end 51a of the second damping wheel 5a, the first engagement end 41a is provided with a plurality of straight teeth around the axis, the number of the straight teeth can be 12 or 16 or 18, and the shape of the second engagement end 51a is the same as that of the first engagement end 41 a. When the first damping wheel 4a and the second damping wheel 5a are twisted relative to each other, an axial component force is generated between the first damping wheel 4a and the second damping wheel 5a, and the axial component force overcomes the elastic force applied to the second damping wheel 5a by the damping spring 7a, so that the second damping wheel 5a is separated from the first damping wheel 4a.
A handle holding plane 34 is arranged on one side of the handle 3a, so that the handle 3a is not easy to slip when being held. At least one housing holding plane 85 is arranged on one side of the damping wheel housing 8a, so that the damping wheel housing 8a is not easy to slip when held.
Therefore, under normal conditions, the first damping wheel 4a and the second damping wheel 5a are meshed under the action of the elasticity of the damping spring 7a, the adjusting knob 9a and the handle 3a are tightly connected with the damping wheel shell 8a under the action of the tension of the damping spring 7a, relative rotation cannot occur, and the connection between the connecting rod 2a and the handle 3a is stable and firm. When the handle 3a is held by the right hand and the adjusting knob 9a is rotated by the left hand, the second damping wheel 5a moves axially after overcoming the elasticity of the damping spring by the axial component force, and is separated from the first damping wheel 4a, and continuously overcomes the elasticity of the damping spring 7a, and when the blade 1a rotates to a required angle with the handle 3a, the second damping wheel 5a is meshed with the first damping wheel 4a again, so that stable angle adjustment of the blade 1a and the handle 3a is realized.
Example III
Fig. 10 is an exploded view showing a connection structure between a blade and a connecting rod of a micro-scalpel with a replaceable blade and an angle-adjusting blade according to a third embodiment of the present invention.
Referring to fig. 10, the micro-surgical knife with replaceable blade and blade angle adjustment comprises a connecting rod 2b, and blades 1b and handles respectively arranged at two ends of the connecting rod 2 b. One end of the connecting rod 2b is a blade mounting end 23b.
The third embodiment is different from the first embodiment in that:
the center of the end part of the blade mounting end 23b is provided with a blade mounting hole 235b, the inner cavity of the blade mounting hole 235b is in a regular hexagonal prism shape, and the side surface of the blade mounting end 23b is provided with a screw through hole 237.
The two ends of the blade 1b are respectively provided with a blade 11b and a cutter bar 12b, and the outer circumferential surface of the cutter bar 12b is in a regular hexagonal prism shape and is matched with the blade mounting hole 235 b; each side of the cutter bar 12b is provided with a cutter bar blind hole 15.
The cutter bar 12b is inserted into the cutter mounting hole 235b, and the cutter bar screw 238 passes through the screw through hole 237 and the cutter bar blind hole 15 to fixedly connect the cutter blade 1b with the cutter mounting end 23b.
The outer circumferential surface of the end of the cutter bar screw 238 is provided with net-shaped grains to prevent slipping when the cutter bar screw 238 is screwed by a hand.
Therefore, when the angle of the blade 1b needs to be changed, the blade 1b can be taken out from the connecting rod 2b by loosening the cutter bar screw 238, and after the different blade 1b needing to be changed is installed in the connecting rod 2b, the blade 1b can be replaced by screwing the cutter bar screw 238 again. When the blade 1b is required to be rotated, the blade 1b can be adjusted in angle by rotating the blade bar 12b and the blade mounting hole 235b by a certain angle and then screwing the blade bar screw 238.
Example IV
The utility model provides a micro-scalpel of removable blade and regulation blade angle includes the connecting rod and locates blade, the handle at connecting rod both ends respectively.
The fourth embodiment is different from the first embodiment in that:
the meshing end face of the first damping wheel is a first boss, the meshing end face of the second damping wheel 5 is a first blind hole, the first boss is in a regular prism shape, and an inner cavity of the first blind hole is in a regular prism shape matched with the first boss.
Therefore, under the normal condition, the first boss and the first blind hole are matched under the action of the elastic force of the damping spring, the adjusting knob and the handle are tightly connected under the action of the elastic force of the damping spring and cannot rotate relatively, and the connecting rod and the handle are firmly connected; when the left hand holds the adjusting knob and the right hand holds the handle to pull outwards, the first blind hole is separated from the first boss, the handle is slightly rotated, the first blind hole and the first boss relatively rotate for a certain angle, the handle is pressed tightly again, the first blind hole and the first boss are tightly matched again, and therefore relative rotation between the connecting rod and the handle can be achieved, and then angle adjustment between the blade and the handle is achieved.
The rotatable matching structure of the screw and the nut can be adopted between the connecting rod and the handle to adjust the angle between the connecting rod and the handle; the rotatable matching structure of the worm and the turbine or the rack can also be adopted; the two gears are meshed with each other, and the two shafts respectively fixed at the centers of the two gears can also relatively rotate, so that the angle adjustment between the connecting rod and the handle is realized.
Example five
The utility model provides a micro-scalpel of removable blade and regulation blade angle includes the connecting rod and locates blade, the handle at connecting rod both ends respectively.
The connecting rod comprises a deformation part positioned in the middle of the connecting rod, and the deformation part is made of plastic materials and is used for changing the relative position of the blade and the handle when in bending or changing the relative angle of the blade and the handle when in torsion.
Specifically, the plastic material is flexible stainless steel or memory alloy, so that the connecting rod has any shaping function, and can be bent and deformed at will under the action of external force, so that the blade can be stopped at any position and angle.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The utility model provides a microscope scalpel of removable blade and regulation blade angle, includes the connecting rod and locates blade, the handle at connecting rod both ends respectively, its characterized in that, be equipped with angle adjusting device between connecting rod and the handle, angle adjusting device includes first damping wheel, second damping wheel, damping axle, damping spring, first damping wheel is first engaged end and first non-engaged end along its axial both ends respectively, second damping wheel is second engaged end and second non-engaged end along its axial both ends respectively, first engaged end with the second engaged end meshing, damping spring one end is connected the second non-engaged end, damping spring's other end to the fixed setting of distance of first non-engaged end, damping axle's one end and handle fixed connection;
when the first damping wheel is fixed on the connecting rod, the second damping wheel is fixed on the other end of the damping shaft, the damping spring is sleeved on the damping shaft, or when the second damping wheel is fixed on the connecting rod, the damping spring is sleeved on the connecting rod, and the first damping wheel is fixed on the other end of the damping shaft;
when the connecting rod rotates relative to the handle, the second damping wheel can overcome the elasticity of the damping spring and is disengaged from the first damping wheel and then is meshed again;
the end face of the connecting rod, which is connected with the blade, is provided with a third connecting rod through hole, the third connecting rod through hole is communicated with the button cavity, and a button is arranged in the button cavity;
the upper part of the side surface of the button is provided with a button blind hole, the lower part of the side surface of the button is provided with a button through hole, the extension directions of the button blind hole and the button through hole are perpendicular to the extension direction of the step blind hole, and the button is fixed in the step blind hole by penetrating through a third connecting rod through hole and the button blind hole through a fifth pin shaft;
a boss is arranged on the inner side wall of the button through hole, and the extension plane of the boss is perpendicular to the axis of the mounting end of the blade;
the end face of the blade mounting end is provided with a blade mounting hole, a cutter bar cavity is arranged in the blade mounting hole, and the cutter bar cavity is communicated with the button cavity; one end of the blade is a cutter bar, the cutter bar is provided with an annular groove, the cutter bar penetrates through the button through hole to be installed in the cutter bar cavity, and the groove of the cutter bar is matched with the boss of the button.
2. The blade-replaceable and blade-angle-adjustable microsurgical knife according to claim 1, wherein the angle adjusting device further comprises a damping wheel housing having a cylindrical damping through hole, wherein the first damping wheel, the second damping wheel and the damping spring are accommodated in the damping through hole, wherein a radial baffle is formed at one end of the damping through hole in the extending direction, wherein the radial baffle is provided with a central hole through which the connecting rod or the damping shaft passes, and wherein the damping through hole is provided with the first damping wheel, the damping spring and the second damping wheel at the other end of the damping through hole in the extending direction, and wherein a housing end cover is fixed.
3. The micro-scalpel of the replaceable blade and the angle adjusting blade according to claim 1, wherein the angle adjusting device further comprises an adjusting knob, the adjusting knob is cylindrical, a knob mounting hole is formed in the adjusting knob along the axis direction of the adjusting knob, a knob through hole is formed in the adjusting knob along the radial direction of the adjusting knob, a first connecting rod through hole is formed in the side face of one end, close to the handle, of the connecting rod, and the connecting rod penetrates through the knob mounting hole and the first connecting rod through hole through a first pin shaft, so that the adjusting knob is fixed on the connecting rod.
4. The micro-surgical knife with replaceable blade and blade angle adjusting function according to claim 1, wherein a second damping shaft through hole is formed at one end of the damping shaft, a handle through hole is formed in the side face of the handle, a handle mounting hole is formed in the end face of the damping shaft, one end of the damping shaft penetrates through the handle mounting hole and the second damping shaft through hole through a fourth pin shaft, and the damping shaft is fixedly connected with the handle.
5. The microsurgery knife capable of changing the blade and adjusting the blade angle according to claim 1, wherein a second connecting rod through hole is formed in the side face of one end, close to the handle, of the connecting rod, a first damping wheel through hole is formed in the side face of the first damping wheel, a first damping wheel mounting hole is formed in the end face of the first damping wheel, a second damping wheel through hole is formed in the side face of the second damping wheel, a second damping wheel mounting hole is formed in the end face of the second damping wheel, and a first damping shaft through hole is formed in the other end of the damping shaft;
when the first damping wheel is fixed on the connecting rod, the connecting rod penetrates through the first damping wheel mounting hole, the first damping wheel through hole and the second connecting rod through hole through a second pin shaft, and the damping shaft penetrates through the second damping wheel mounting hole, the second damping wheel through hole and the first damping shaft through hole through a third pin shaft;
or when the second damping wheel is fixed on the connecting rod, the connecting rod penetrates through the second damping wheel mounting hole and the second connecting rod through hole through the third pin shaft, and the damping shaft penetrates through the first damping wheel mounting hole and the first damping shaft through hole through the second pin shaft.
6. The replaceable blade and blade angle adjustment microsurgical knife of claim 1 wherein the blade mounting aperture further comprises a stepped cavity in communication with the blade mounting aperture, the stepped cavity being coaxial with the blade bar cavity, the stepped cavity being prismatic in shape; the side wall of the cutter bar is also provided with a regular prism-shaped step which is matched with the step cavity.
7. The replaceable blade and blade angle adjustment microsurgical knife of claim 2 wherein the dampening wheel housing side has at least one housing gripping plane and the handle side has at least one handle gripping plane; or one side of the handle is provided with a concave surface.
8. The replaceable blade and blade angle adjustment microsurgical knife of claim 1 wherein the connecting rod includes a deformation in the middle of the connecting rod, the deformation being of plastic material to change the relative position of the blade to the handle when bent or to change the relative angle of the blade to the handle when twisted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084994.3A CN106725749B (en) | 2017-02-17 | 2017-02-17 | Micro-surgical knife with replaceable blade and blade angle adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084994.3A CN106725749B (en) | 2017-02-17 | 2017-02-17 | Micro-surgical knife with replaceable blade and blade angle adjusting function |
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| Publication Number | Publication Date |
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| CN106725749A CN106725749A (en) | 2017-05-31 |
| CN106725749B true CN106725749B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710084994.3A Active CN106725749B (en) | 2017-02-17 | 2017-02-17 | Micro-surgical knife with replaceable blade and blade angle adjusting function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201815383D0 (en) * | 2018-09-21 | 2018-11-07 | Burcas Ltd | Surgical apparatus |
| CN113069187A (en) * | 2021-03-29 | 2021-07-06 | 中南大学湘雅医院 | Minimally invasive scalpel for surgical operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610970Y2 (en) * | 1989-10-31 | 1994-03-23 | 信越化学工業株式会社 | Scalpel |
| CN201359261Y (en) * | 2009-01-22 | 2009-12-09 | 东莞卡斯特照明有限公司 | Angle adjuster and lampshade utilizing same |
| CN201389058Y (en) * | 2009-03-20 | 2010-01-27 | 华东医院 | Scalpel for removing foot callosum |
| US8075578B2 (en) * | 2009-03-23 | 2011-12-13 | V.R. Hexis Ltd. | Apparatus and method for making a circular incision |
| CN102688081A (en) * | 2012-06-04 | 2012-09-26 | 刘新平 | Femoral head medulla core decompression drill bit |
| CN202629962U (en) * | 2012-06-07 | 2012-12-26 | 广州凯图电气股份有限公司 | Angle-adjustable lamp socket |
| CA2785484C (en) * | 2012-08-10 | 2014-08-12 | Yu Chieh Lee | Support leg height adjustment device |
| CN202943572U (en) * | 2012-10-18 | 2013-05-22 | 河南省电力公司漯河供电公司 | Fast screwdriver combination tool |
| US9848900B2 (en) * | 2012-12-07 | 2017-12-26 | Ethicon Llc | Ultrasonic surgical blade |
| CN103321510B (en) * | 2013-06-19 | 2017-06-16 | 国家电网公司 | A kind of mechanical button lock |
| CN104964249B (en) * | 2015-07-17 | 2018-02-13 | 金容范 | The hinge means of light fixture |
| CN205458393U (en) * | 2016-01-29 | 2016-08-17 | 厦门市迈瑞克卫浴科技有限公司 | Quick assembly disassembly device of lavatory lid |
| CN207084845U (en) * | 2017-02-17 | 2018-03-13 | 湖南博科生物技术有限公司 | Changeable blade and the micro-bistoury for adjusting blade angle |
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Address after: Room 702, building 10, Haidianyuan, 229 Guyuan Road, high tech Development Zone, Changsha City, Hunan Province Applicant after: HUNAN BOKE MEDICAL TECHNOLOGY Co.,Ltd. Address before: 610-C, Floor 6, Building 7, Oak Garden, No. 8, Lutian Road, Lugu Industrial Base, High tech Development Zone, Changsha City, 410000, Hunan Province Applicant before: HUNAN BOKE BIOTECHNOLOGY CO.,LTD. |
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