CN112842813A

CN112842813A - Therapeutic instrument for neurosurgery

Info

Publication number: CN112842813A
Application number: CN202011637780.2A
Authority: CN
Inventors: 陈虹旭
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention relates to the field of medical auxiliary instruments and discloses a neurosurgical treatment instrument which comprises a backrest plate, a seat plate, a leg pad plate, a handrail, a head pad plate, a foot pedal, a binding band, a supporting leg, a wheel, an elastic pad, a knocking rod, a ball, a hinge III and a hinge IV. The multifunctional wheelchair has multiple functions, can be used as a wheelchair, can be unfolded to form a bed, does not need to move a patient back and forth for different massage purposes, and is time-saving and labor-saving; the invention can move the knee joint of the patient and move any leg according to the requirement, and simultaneously can carry out knocking massage and rubbing massage on the whole back of the patient, thereby being beneficial to accelerating the recovery of the muscle and vein of the patient.

Description

Therapeutic instrument for neurosurgery

Technical Field

The invention relates to the field of medical auxiliary instruments, in particular to a therapeutic apparatus for neurosurgery.

Background

Neurosurgery (neurosurgey) is a branch of surgery, and is characterized by that on the basis of surgery as main therapeutic means in the surgery, a unique neurosurgical research method is used to research the injury, inflammation, tumor, deformity and disease pathogenesis of some genetic metabolism disorder or dysfunction of human nervous system, such as brain, spinal cord and peripheral nervous system and its related auxiliary organs, such as skull, scalp and cerebral vascular meninges, etc. and explore a high, fine and advanced discipline of new diagnosis, treatment and prevention technology. The neurosurgical treatment instrument needs rehabilitation therapy after neurosurgery operation, physical therapy is one of the important ways for recovering the muscle activity, in addition, certain diseases are mainly recovered by physical therapy, so that the physical therapy for recovering the muscle activity of the neurosurgical patient is important, if the patient is subjected to whole-body massage by only medical staff or family members, the mental and physical burdens of the family members of the patient are increased, the workload of the medical staff is increased, and the neurosurgical treatment instrument capable of replacing the whole-body massage of manpower is needed.

Disclosure of Invention

Based on the problems, the invention provides a therapeutic apparatus for neurosurgery, which not only can move the knee joint of a patient, but also can carry out knocking massage and rubbing massage on the whole back of the patient, and can be used as a wheelchair, so that the therapeutic apparatus has various functions and saves manpower.

In order to solve the technical problems, the invention provides the following technical scheme:

a therapeutic instrument for neurosurgery comprises a backrest plate, a seat plate and two leg cushion plates, wherein the seat plate is positioned between the backrest plate and the leg cushion plates, handrails are arranged at the tops of two long side sides of the seat plate, the two leg cushion plates are arranged along the width direction of the seat plate, the leg cushion plates can swing relative to the seat plate, a head cushion plate is arranged at the end part of the backrest plate, which is far away from the seat plate, a foot pedal is arranged at the end part of the leg cushion plate, which is far away from the seat plate, a binding band is arranged on the foot pedal, two support legs are arranged at two long side sides of the seat plate, the included angle between the two support legs is an obtuse angle, and wheels are arranged at; the cushion head plate can be turned over from a position which is flush with the backrest plate to the top of the cushion head plate, and the backrest plate can be turned over from a position which is flush with the seat plate to a position which is vertical to the seat plate; the top of the pad head plate is provided with an elastic cushion extending to the top of the seat plate, the pad head plate is internally provided with a plurality of knocking rods which are equidistantly arranged along the width direction of the seat plate, sequentially penetrate through the end part of the pad head plate close to the backrest plate and penetrate through the whole backrest plate and then are inserted into the seat plate, the parts of the knocking rods, which are positioned in the pad head plate, the backrest plate and the seat plate, are respectively provided with a plurality of equidistantly arranged round balls, the knocking rods can rotate in the pad head plate, the backrest plate and the seat plate in a reciprocating manner, the round balls can rotate along with the knocking rods, the round balls and the knocking rods are embedded in the corresponding pad head plate, the backrest plate and the seat plate, and the knocking rods can also move in a reciprocating manner along the length; the knocking rod between the cushion head plate and the back plate is provided with a third hinge which can overturn the cushion head plate to the top of the cushion head plate from a position which is flush with the back plate, and the knocking rod between the back plate and the seat plate is provided with a fourth hinge which can overturn the back plate to a position which is vertical to the seat plate from a position which is flush with the seat plate.

Furthermore, a shielding cover with a circular arc-shaped cross section is arranged in the middle of the end part of the seat board, which is far away from the back board, two ends of the shielding cover are respectively provided with a cylindrical connecting column, the length direction of the connecting column is arranged along the width direction of the seat board, the circle center of the connecting column is overlapped with the arc center of the shielding cover, and the leg cushion board is connected with the connecting column on the corresponding side; one end of the connecting column facing the shielding cover is provided with a rotating column which penetrates through the side wall of the shielding cover and extends into the shielding cover, a first gear is sleeved on the periphery of the rotating column, two ends of the first gear are respectively inserted into the seat plate and the inner wall of the shielding cover, and the rotating column and the first gear can rotate; a second gear meshed with the first gear is arranged below the first gear, a rotating rod is arranged at one end, facing the side where the center of the shielding cover is located, of two faces of the gear, a rotating motor is arranged at one end, away from the second gear, of the rotating rod, and a supporting rod connected with the seat plate is arranged on the rotating motor.

Further, be equipped with hinge one between head board and the back-up plate, be equipped with hinge two between back-up plate and the bedplate, the bottom surface of back-up plate is close to the tip of bedplate and is equipped with a piece, the one end that a piece is close to the bedplate is equipped with the screw hole, the screw hole is equipped with the bolt that passes the screw hole and can stretch into between two hinges of hinge two.

Furthermore, a motorized groove is formed in one end, away from the back plate, of the pad plate, the end, away from the back plate, of each knocking rod extends into the motorized groove, the knocking rods are divided into two outer side groups and a middle group, a gear III is arranged at the end, located in the motorized groove, of each knocking rod, moving rods arranged in the width direction of the seat plate are arranged below the gears III of the outer side groups and the middle group, tooth grooves arranged in the width direction of the seat plate are formed in the tops of the moving rods, the bottom ends of the gears III are located in the tooth grooves, and driving teeth which are arranged in the length direction of the tooth grooves and are meshed with the gear III are arranged at the bottoms of the tooth grooves; one end of the moving rod is provided with a first telescopic motor for driving the moving rod to reciprocate along the width direction of the seat plate, a first telescopic rod is arranged between the first telescopic motor and the moving rod, a second telescopic motor for driving the first telescopic motor to move along the length direction of the seat plate is arranged on the first telescopic motor, and a second telescopic rod is arranged between the second telescopic motor and the first telescopic motor.

Compared with the prior art, the invention has the beneficial effects that: the multifunctional wheelchair has multiple functions, can be used as a wheelchair, can be unfolded to form a bed, does not need to move a patient back and forth for different massage purposes, and is time-saving and labor-saving; the invention can move the knee joint of the patient and move any leg according to the requirement, and simultaneously can carry out knocking massage and rubbing massage on the whole back of the patient, thereby being beneficial to accelerating the recovery of the muscle and vein of the patient.

Drawings

FIG. 1 is an external structure of a side view of the present invention without the installation of the rapping bar and the elastic pad, and without deployment;

FIG. 2 is an internal structure of the side view of the present invention without the rapping bar and the elastic pad installed and deployed;

FIG. 3 is an external structure of the side view of the present invention when unfolded without the support leg installed;

FIG. 4 is an internal structure of the present invention in top view at the rapping bar when the supporting legs are not installed and are unfolded;

FIG. 5 is an internal structure of a top view of the shield case of the present invention when the rotating electric machine is not mounted;

FIG. 6 is a schematic view of the engagement between the first gear and the second gear;

FIG. 7 is a schematic view of the structure of the rotary motor of the present invention connected to the seat plate;

FIG. 8 is a schematic view of the structure at the motorized trough of the present invention;

wherein: 1. a backrest plate; 2. a seat plate; 3. a leg rest plate; 4. a handrail; 5. a head plate; 6. a pedal; 7. binding bands; 8. supporting legs; 9. a wheel; 10. an elastic pad; 11. knocking the rod; 12. a ball; 13. a third hinge; 14. a fourth hinge; 15. a shield cover; 16. connecting columns; 17. turning the column; 18. a first gear; 19. a second gear; 20. a rotating rod; 21. a rotating electric machine; 22. a strut; 23. a first hinge; 24. a second hinge; 25. supporting a block; 26. a threaded hole; 27. a bolt; 28. a motorized tank; 29. a third gear; 30. a travel bar; 31. a tooth socket; 32. a drive tooth; 33. a first telescopic motor; 34. a first telescopic rod; 35. a second telescopic motor; 36. and a second telescopic rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example (b):

referring to fig. 1, 2, 3, 4, 5, 6, 7 and 8, a neurosurgical treatment instrument comprises a backrest plate 1, a seat plate 2 and two leg-pad plates 3, wherein the seat plate 2 is arranged between the backrest plate 1 and the leg-pad plates 3, handrails 4 are arranged at the tops of two long sides of the seat plate 2, the handrails 4 are welded with the seat plate 2, the two leg-pad plates 3 are arranged along the width direction of the seat plate 2, and the two leg-pad plates 3 are respectively used for padding two legs of a patient. The tip that back plate 1 deviates from bedplate 2 is equipped with head board 5, back plate 1, bedplate 2 and leg board 3 can expand to be located same horizontal plane, the tip that leg board 3 deviates from bedplate 2 is equipped with step board 6, step board 6 and leg board 3 welding, when head board 5, back plate 1, bedplate 2 and leg board 3 are located same level, step board 6 extends and sets up perpendicularly with leg board 3 to the top of leg board 3, step board 6 is equipped with bandage 7, bandage 7 can be used to tie up patient's foot.

Referring to fig. 1, the leg-rest board 3 can swing left and right with respect to the seat board 2, and the directional word "left and right" herein is referred to left and right in fig. 1. The middle part that bedplate 2 of this embodiment deviates from the tip of back plate 1 is equipped with the cross section and is convex shield 15, the width direction setting of bedplate 2 is followed to the length direction of shield 15, the length direction's of shield 15 both ends all are equipped with cylinder type's spliced pole 16, the width direction setting of bedplate 2 is followed to the length direction of spliced pole 16, the centre of a circle of spliced pole 16 overlaps with the arc center of shield 15, the spliced pole 16 welding of leg plate 3 and corresponding side, spliced pole 16 can deviate from the tip rotation of back plate 1 at bedplate 2. The spliced pole 16 is equipped with the rotary column 17 that passes the lateral wall of shielding cover 15 and stretch into in the shielding cover 15 towards the one end of shielding cover 15, rotary column 17 and spliced pole 16 welding, the periphery cover of rotary column 17 be equipped with rotary column 17 welded gear 18, the both ends of gear 18 insert respectively in bedplate 2 and the inner wall of shielding cover 15 to make bedplate 2 and shielding cover 15 play the effect of supporting to gear 18, rotary column 17 is rotatable, gear 18 can rotate along with rotary column 17. A second gear 19 meshed with the first gear 18 is arranged below the first gear 18, a rotating rod is arranged at one end, facing the side where the center of the shielding cover 15 is located, of the second gear 19, the rotating rod is welded with the center of the second gear 19, the central axis of the rotating rod penetrates through the circle center of the second gear 19, a rotating motor is arranged at one end, facing away from the second gear 19, of the rotating rod, the rotating rod is connected with the output shaft end of the rotating motor, a supporting rod 22 connected with the seat plate 2 is arranged on the rotating motor, and the supporting rod 22 is welded with the seat plate 2 and the rotating motor. The rotating rod is driven to rotate by the rotating motor, so that the second gear 19 is driven to rotate, the second gear 19 drives the first gear 18 to rotate, the rotating column 17 is driven to rotate, the connecting column 16 is driven to rotate, the leg pad plate 3 swings left and right relative to the seat plate 2, the knee joint of a patient is moved, and the nerve of the patient is recovered and treated.

Two long avris of bedplate 2 all are equipped with two supporting legs 8, and supporting leg 8 welds with bedplate 2, and the contained angle between two supporting legs 8 is the obtuse angle, is favorable to supporting this device, and the bottom of supporting leg 8 is equipped with wheel 9, can regard as the wheelchair to use when this device is folding, can promote, is convenient for remove the patient.

The headboard 5 can be turned over from the position flush with the backrest board 1 to the top of the headboard 5, the backrest board 1 can be turned over from the position flush with the seat board 2 to the position vertical to the seat board 2, and the flush position is the horizontal position when the device is completely unfolded. A first hinge 23 is arranged between the headrest plate 5 and the backrest plate 1, the first hinge 23 can turn the headrest plate 5 from a position flush with the backrest plate 1 to the top of the headrest plate 5, a second hinge 24 is arranged between the backrest plate 1 and the seat plate 2, and the second hinge 24 can turn the backrest plate 1 from a position flush with the seat plate 2 to a position perpendicular to the seat plate 2. The tip that the bottom surface of back board 1 is close to bedplate 2 is equipped with a piece 25, a piece 25 and the welding of back board 1, the tip that a piece 25 is close to bedplate 2 stretches out back board 1, the one end that a piece 25 is close to bedplate 2 is equipped with screw hole 26, screw hole 26 is equipped with the bolt 27 that passes screw hole 26 and can stretch into between two hinges of two 24 hinges, when folding this device, can be with between two hinges of bolt 27 screw in hinge two 24, back board 1 removes when preventing that the patient from lying on back board 1.

The top of the headboard 5 is provided with an elastic cushion 10 extending to the top of the seat board 2, and the elastic cushion 10 completely covers the tops of the headboard 5, the backrest board 1 and the seat board 2. A plurality of knocking rods 11 are arranged in the head cushion plate 5 at equal intervals along the width direction of the seat plate 2, sequentially penetrate through the end part of the head cushion plate 5 close to the back cushion plate 1 and penetrate through the whole back cushion plate 1 and then are inserted into the seat plate 2, a plurality of round balls 12 arranged at equal intervals are arranged at the parts of the knocking rods 11 in the head cushion plate 5, the back cushion plate 1 and the seat plate 2, the round balls 12 are welded with the knocking rods 11, the round balls 12 are arranged at one side of the knocking rods 11, the knocking rods 11 can rotate in the head cushion plate 5, the back cushion plate 1 and the seat plate 2 in a reciprocating mode, the round balls 12 can rotate along with the knocking rods 11, the round balls 12 and the knocking rods 11 are embedded in the corresponding head cushion plate 5, the back cushion plate 1 and the seat plate 2, and the embedded parts of the head cushion plate 5, the back cushion plate 1 and the seat plate 2 except the embedded parts of the; the tapping rod 11 is also reciprocally movable along the length of the seat plate 2. The knocking rod 11 between the headboard 5 and the back board 1 is provided with a third hinge 13 which can turn the headboard 5 from a position flush with the back board 1 to the top of the headboard 5, the knocking rod 11 between the back board 1 and the seat board 2 is provided with a fourth hinge 14 which can turn the back board 1 from a position flush with the seat board 2 to a position vertical to the seat board 2, and the third hinge 13 and the fourth hinge 14 divide the knocking rod 11 into three parts respectively positioned in the headboard 5, the back board 1 and the seat board 2.

One end, deviating from back board 1, of pad head board 5 in this embodiment is provided with motorized groove 28, the end, deviating from back board 1, of rapping bar 11 extends into motorized groove 28, and a plurality of rapping bars 11 are divided into two outer groups and one middle group, and the number of rapping bars 11 in this embodiment is thirteen, wherein the number of rapping bars 11 in the outer groups is four, and the number of rapping bars 11 in the middle group is five. The end part of the knocking rod 11, which is positioned in the maneuvering groove 28, is provided with a gear three 29, the gear three 29 is welded with the knocking rod 11, moving rods 30 which are arranged along the width direction of the seat plate 2 are arranged below the gear three 29 of the outer group and the gear three 29 of the middle group, the number of the moving rods 30 of the embodiment is three, the length direction of the moving rods 30 is arranged along the width direction of the seat plate 2, the top part of the moving rods 30 is provided with tooth grooves 31 which are arranged along the width direction of the seat plate 2, the bottom end of the gear three 29 is positioned in the tooth grooves 31, and the bottom part of the tooth grooves 31 is provided with driving teeth 32 which are arranged along the length direction of the tooth grooves; one end of the moving rod 30 is provided with a first telescopic motor 33 for driving the moving rod 30 to reciprocate along the width direction of the seat plate 2, a first telescopic rod 34 is arranged between the first telescopic motor 33 and the moving rod 30, the first telescopic rod 34 is connected with the output shaft end of the first telescopic motor 33, and the first telescopic rod 34 is welded with the moving rod 30. The first telescopic motor 33 is provided with a second telescopic motor 35 for driving the first telescopic motor 33 to move along the length direction of the seat plate 2, the second telescopic motor 35 is welded with the bottom of the motorized groove 28, a second telescopic rod 36 is arranged between the second telescopic motor 35 and the first telescopic motor 33, the second telescopic rod 36 is connected with the output shaft end of the second telescopic motor 35, and the second telescopic rod 36 is welded with the first telescopic motor 33. The first telescopic motor 33 drives the moving rod 30 to move, so that the third gear 29 is driven to rotate, and the knocking rod 11 is driven to rotate; the second telescopic motor 35 drives the first telescopic motor 33 to move, and the third gear 29 is located in the tooth slot 31, so that the third gear 29 also moves along with the first telescopic motor 33, and the effects of rotating the rapping bar 11 and moving the rapping bar 11 along the length direction of the seat plate 2 are achieved.

The principle of use of this embodiment is as follows: the device can be used as a mobile wheelchair, at the moment, the pad head plate 5 is turned to the top of the back plate 1, the back plate 1 is turned to a position vertical to the seat plate 2, the bolt 27 is screwed into the space between the two hinges of the second hinge 24, the rotating motor is started, the pad leg plate 3 is turned to a position vertical to the seat plate 2, a patient sits on the seat plate 2, the back pad plate and the feet are placed on the pedal 6, the feet of the patient are tied up by the binding bands 7, and when the knee joint of the patient needs to be moved, the rotating motor is started, and the knee joint of one leg can be selectively moved; the device can also be used as a nerve massage bed, the pad head plate 5, the backrest plate 1, the seat plate 2 and the pad leg plate 3 are all positioned on the same horizontal plane, after a patient lies on the bed, the knocking rods 11 of the outer group and the middle group can be selectively started to operate according to needs, and the operation mode can also be selectively selected to beat the back of the patient or rub the back of the patient back and forth, when the back of the patient is beaten, the knocking rods 11 rotate to rotate the round balls 12 back and forth into or out of the corresponding pad head plate 5, the backrest plate 1 and the seat plate 2, so that the back of the patient is beaten by the round balls 12; when the back of the patient needs to be rubbed, the knocking rod 11 is rotated, the round ball 12 is rotated out of the corresponding head pad plate 5, the back rest plate 1 and the seat plate 2, then the knocking rod 11 stops rotating, the running mode that the knocking rod 11 moves back and forth along the length direction of the seat plate 2 is started, and the round ball 12 is used for rubbing the back of the patient back and forth.

The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the scope of the invention, which is defined by the claims, and all equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be covered by the scope of the present invention.

Claims

1. A therapeutic apparatus used for neurosurgery is characterized by comprising a backrest plate (1), a seat plate (2) and two leg-pad plates (3), the seat board (2) is positioned between the backrest board (1) and the leg-pad board (3), the top parts of two long sides of the seat board (2) are respectively provided with a handrail (4), the two leg cushion boards (3) are arranged along the width direction of the seat board (2), the leg cushion plates (3) can swing relative to the seat plate (2), the end part of the backrest plate (1) departing from the seat plate (2) is provided with a head cushion plate (5), the end part of the leg pad plate (3) departing from the seat plate (2) is provided with a pedal plate (6), the pedal (6) is provided with a binding band (7), two long sides of the seat plate (2) are provided with two supporting legs (8), an included angle between the two supporting legs (8) is an obtuse angle, and the bottom of each supporting leg (8) is provided with a wheel (9); the headrest plate (5) can be turned over from a position which is flush with the backrest plate (1) to the top of the headrest plate (5), and the backrest plate (1) can be turned over from a position which is flush with the seat plate (2) to a position which is vertical to the seat plate (2); the top of the head plate (5) is provided with an elastic cushion (10) extending to the top of the seat plate (2), a plurality of knocking rods (11) which are equidistantly arranged along the width direction of the seat board (2) and sequentially penetrate through the end parts of the seat board (5) close to the backrest board (1) and penetrate through the whole backrest board (1) and then are inserted into the seat board (2) are arranged in the seat board (5), the parts of the knocking rod (11) positioned in the head board (5), the back board (1) and the seat board (2) are all provided with a plurality of balls (12) arranged at equal intervals, the knocking rod (11) can rotate in the pad head plate (5), the backrest plate (1) and the seat plate (2) in a reciprocating way, the round ball (12) can rotate along with the knocking rod (11), the round ball (12) and the knocking rod (11) are embedded in the corresponding head board (5), the back board (1) and the seat board (2), the knocking rod (11) can also move back and forth along the length direction of the seat plate (2); the knocking rod (11) between the cushion plate (5) and the back plate (1) is provided with a third hinge (13) which can overturn the cushion plate (5) to the top of the cushion plate (5) from the position flush with the back plate (1), and the knocking rod (11) between the back plate (1) and the seat plate (2) is provided with a fourth hinge (14) which can overturn the back plate (1) to the position vertical to the seat plate (2) from the position flush with the seat plate (2).

2. A therapeutic apparatus for neurosurgery according to claim 1, characterized in that the middle of the end of the seat plate (2) facing away from the back plate (1) is provided with a shielding cover (15) with a circular arc-shaped cross section, both ends of the shielding cover (15) are provided with cylindrical connecting columns (16), the length direction of the connecting columns (16) is arranged along the width direction of the seat plate (2), the circle center of the connecting columns (16) is overlapped with the arc center of the shielding cover (15), and the leg pad plate (3) is connected with the connecting column (16) on the corresponding side; one end, facing the shielding cover (15), of the connecting column (16) is provided with a rotating column (17) which penetrates through the side wall of the shielding cover (15) and extends into the shielding cover (15), a first gear (18) is sleeved on the periphery of the rotating column (17), two ends of the first gear (18) are respectively inserted into the inner walls of the seat plate (2) and the shielding cover (15), and the rotating column (17) and the first gear (18) can rotate; the lower part of the first gear (18) is provided with a second gear (19) meshed with the first gear (18), one end, facing the side where the center of the shielding cover (15), of the second gear (19) is provided with a rotating rod (20), one end, facing away from the second gear (19), of the rotating rod (20) is provided with a rotating motor (21), and the rotating motor (21) is provided with a support rod (22) connected with the seat plate (2).

3. An apparatus according to claim 1, wherein a first hinge (23) is provided between the head board (5) and the backrest board (1), a second hinge (24) is provided between the backrest board (1) and the seat board (2), a support block (25) is provided at the end of the bottom surface of the backrest board (1) close to the seat board (2), a threaded hole (26) is provided at the end of the support block (25) close to the seat board (2), and the threaded hole (26) is provided with a bolt (27) which passes through the threaded hole (26) and can extend into the space between the two hinges of the second hinge (24).

4. An apparatus according to claim 1, one end of the head plate (5) departing from the backrest plate (1) is internally provided with a maneuvering groove (28), the end of the rapping bar (11) departing from the backrest plate (1) extends into the maneuvering groove (28), a plurality of rapping bars (11) are divided into two outer groups and a middle group, a third gear (29) is arranged at the end part of the knocking rod (11) positioned in the maneuvering groove (28), a movable rod (30) arranged along the width direction of the seat plate (2) is arranged below the gears III (29) of the outer group and the middle group, the top of the movable rod (30) is provided with a tooth groove (31) arranged along the width direction of the seat board (2), the bottom end of the third gear (29) is positioned in a tooth groove (31), and the bottom of the tooth groove (31) is provided with driving teeth (32) which are arranged along the length direction of the tooth groove (31) and meshed with the third gear (29); the one end of carriage release lever (30) is equipped with the flexible motor (33) of the width direction reciprocating motion of drive carriage release lever (30) along bedplate (2), be equipped with telescopic link (34) between flexible motor (33) and carriage release lever (30), flexible motor (33) are equipped with the flexible motor two (35) that the length direction of drive flexible motor (33) along bedplate (2) removed, be equipped with telescopic link two (36) between flexible motor two (35) and flexible motor one (33).