CN107260396B

CN107260396B - Mastoid spreader with length and width capable of being adjusted in two directions

Info

Publication number: CN107260396B
Application number: CN201710425514.5A
Authority: CN
Inventors: 徐志华; 冯益进
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-08
Filing date: 2017-06-08
Publication date: 2023-08-29
Anticipated expiration: 2037-06-08
Also published as: CN107260396A

Abstract

The invention relates to the field of mastoid spreader design, in particular to a mastoid spreader with a length and a width capable of being adjusted in two directions, which comprises a rectangular frame, wherein the lengths of a first frame and a second frame in the length direction of the frame can be adjusted simultaneously and can be locked through a first locking mechanism on any stroke, the lengths of a third frame and a fourth frame in the width direction of the frame can be adjusted simultaneously and can be locked through a second locking mechanism on any stroke, one row of first hooks can be arranged on the first frame or the third frame in a folding manner, the other row of second hooks can be arranged on the second frame or the fourth frame in a folding manner, when the mastoid spreader is used, the distance between the first hooks and the second hooks in each row and the folding of the first hooks in each row and the folding of the second hooks in each row are adjusted according to the size of wound area, and muscle tissues of a wound can be spread by using the first hooks and the second hooks, so that the operation field can be fully exposed.

Description

Mastoid spreader with length and width capable of being adjusted in two directions

Technical Field

The invention relates to the field of mastoid spreader design, in particular to a mastoid spreader with two-way adjustable length and width.

Background

Mastoid spreader is a commonly used surgical instrument in ear microsurgery and otoneurosurgery, and is mainly used for spreading incision skin and subcutaneous tissue to expose mastoid region and surrounding bone. The traditional mastoid spreader is of a fixed clamp structure, the rear end of the mastoid spreader is provided with a handle, the spreading tooth hooks at the front end of the mastoid spreader are fixed, the handle seriously affects the operation during the operation, the fixed spreading tooth hooks cannot be adjusted due to the fact that the tooth hooks are limited, the surgical field cannot be fully and satisfactorily exposed, and two spreaders are often needed to be used together during the operation, so that the operation is very unfavorable.

Disclosure of Invention

The invention aims to overcome the defects of inconvenient use and influence on operation in the prior art and provides a mastoid spreader which is convenient to use and can fully expose the operation field and can be adjusted in length and width in two directions.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a mastoid spreader that length and width can two-way regulation, including the frame of rectangle, but frame length direction's first frame, the length of second frame can be realized adjusting simultaneously and all accessible first locking mechanism locks on arbitrary stroke, frame width direction's third frame and the length of fourth frame all can be realized adjusting simultaneously and all accessible second locking mechanism locks on arbitrary stroke, two rows of one-to-one and the first hook and the second hook of opposite arrangement are arranged to one side of frame, first hook is arranged on first frame or third frame, and along with the length variation of first frame or third frame, first hook in one row can realize folding or expansion, second hook is arranged on second frame or fourth frame, and along with the length variation of second frame or fourth frame, the second hook in another row can realize folding or expansion.

The beneficial effects are that: the mastoid spreader can be arbitrarily shortened and lengthened in the length and width directions and can be maintained in any state through the first locking mechanism and the second locking mechanism, meanwhile, the distance between the first hook and the second hook can be adjusted along with the first locking mechanism, the first hook in one row can be folded or unfolded, the second hook in the other row can be synchronously folded or unfolded, when the mastoid spreader is used, the mastoid spreader is leaned against a wound, the distance between the first hook and the second hook and the folding of the first hook in each row and the folding of the second hook in each row are adjusted according to the wound area, the muscle tissue of the wound is spread by the first hook and the second hook, the operation field can be fully exposed, the mastoid spreader is of a frame structure, and the mastoid spreader has no handle which extends outwards, is greatly convenient for operation, is applicable to wounds of different sizes, and has flexible use and wide applicability.

Drawings

FIG. 1 is a schematic view of a structure of the present invention with a support frame removed;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a side view of the first hook of fig. 1 folded and the second hook folded.

In the figure: 10-frames, 11-first side frames, 111-inner frames, 112-outer frames, 113-strip-shaped holes, 114-pins, 115-strip-shaped channels, 116-missing parts, 12-second side frames, 13-third side frames and 14-fourth side frames; 20-a first locking mechanism, 21-a pressing block, 22-a spring, 23-a lever, 24-a rotating shaft and 25-a button; 30-a second locking mechanism; 40-a first hook; 50-a second hook; 60-supporting frame, 61-transverse plate and 62-side plate.

Detailed Description

The invention is further described below in connection with fig. 1-3.

The mastoid spreader with the length and width adjustable comprises a rectangular frame 10, wherein the lengths of a first frame 11 and a second frame 12 in the length direction of the frame 10 can be adjusted simultaneously and can be locked by a first locking mechanism 20 on any stroke, the lengths of a third frame 13 and a fourth frame 14 in the width direction of the frame 10 can be adjusted simultaneously and can be locked by a second locking mechanism 30 on any stroke, two rows of first hooks 40 and second hooks 50 which are arranged in a one-to-one correspondence and are opposite are arranged on one side of the frame 10, the first hooks 40 are arranged on the first frame 11 or the third frame 13, the first hooks 40 in one row can be folded or unfolded along with the change of the length of the first frame 11 or the third frame 13, the second hooks 50 are arranged on the second frame 12 or the fourth frame 14, and the second hooks 50 in the other row can be folded or unfolded along with the change of the length of the second frame 12 or the fourth frame 14.

The mastoid spreader of the invention can be arbitrarily shortened and lengthened in the length and width directions and can be maintained in any state through the first locking mechanism 20 and the second locking mechanism 30, meanwhile, the distance between the first hook 40 and the second hook 50 can be adjusted along with the first hook, the first hook 40 in one row can be folded or unfolded, the second hook 50 in the other row can be synchronously folded or unfolded, when the mastoid spreader is used, the mastoid spreader is leaned against a wound, the distance between the first hook 40 and the second hook 50 and the folding of the first hook 40 in each row and the folding of the second hook 50 in each row are adjusted according to the size of the wound area, the muscle tissue of the wound is spread by utilizing the first hook 40 and the second hook 50, the operation field can be fully exposed, the mastoid spreader of the invention is of a frame structure, and has no handle extending outwards, thereby greatly facilitating the operation, and being applicable to the wounds with different sizes, and having flexible use and wide applicability.

As a further preferred embodiment: the first frame 11 includes an inner frame 111 and an outer frame 112, one end of the inner frame 111 is inserted into the outer frame 112 from one end of the outer frame 112, the inner frame 111 is slidable relative to the outer frame 112, the number of the first hooks 40 is even, one half of the first hooks 40 are arranged on the inner frame 111, the other half of the first hooks 40 are arranged on the outer frame 112, two sides of the outer frame 112 are provided with strip holes 113, pins 114 are arranged in the strip holes 113 on two sides and are locked on two sides of the inner frame 111 to prevent the inner frame 111 and the outer frame 112 from separating, one end of the strip hole 113 on the same side as the first hooks 40 extends to the end of the outer frame 112 where the inner frame 111 is located, the strip holes 113 are in a closed shape from the strip holes 113 to the strip channels 115, one half of the first hooks 40 are arranged on the same straight line and can move along with the inner frame 111 in the strip channels 115 and the strip holes 113, the other half of the first hooks 40 are arranged on one side of the strip holes 113, and one half of the first hooks 40 can move to a position overlapping with the other half of the first hooks 40. The strip-shaped channel 115 is communicated with the strip-shaped hole 113, and the strip-shaped channel 115 is in a closing-in shape from the strip-shaped hole 113, so that the pin 114 can be prevented from being separated from the strip-shaped hole 113, the inner frame 111 and the outer frame 112 can be prevented from being separated, and one half of the first hooks 40 can move along the strip-shaped channel 115 and the strip-shaped hole 113 to be overlapped with the other half of the first hooks 40 to adapt to wounds of different sizes.

Further, the second frame 12, the third frame 13, and the fourth frame 14 are identical to the first frame 11 in composition, and the positions of the inner frame and the outer frame in the second frame 12 are opposite to the positions of the inner frame 111 and the outer frame 112 in the first frame 11, and the positions of the inner frame and the outer frame in the third frame 13 are opposite to the positions of the inner frame and the outer frame in the fourth frame 14, so that the whole structure is stable.

Preferably, the cross section of the outer frame 112 of the first frame 11 is quadrilateral, a strip-shaped missing portion 116 consistent with the length direction of the outer frame 112 is formed in the middle of the outer side surface perpendicular to the surface where the first hook 40 is located, one end of the outer side surface of the first hook 40 is connected with the supporting frame 60, the supporting frame 60 is formed by enclosing a transverse plate 61 arranged in parallel with the outer frame 112 at intervals and two side plates 62 perpendicular to the outer frame 112, the first locking mechanism 20 comprises a pressing block 21, the pressing block 21 is arranged between the missing portions 116, the pressing block 21 and the frame surface of the inner frame 111 of the first frame 11 are abutted against each other, the frame surface is a rack-shaped surface, the abutting surface of the pressing block 21 is a rack surface, the pressing block 21 and the inner frame 111 form locking fit, the transverse plate 61 of the supporting frame 60 is perpendicularly fixed with a positioning shaft, the end of the positioning shaft is suspended into a positioning hole of the pressing block 21, the outer side of the positioning shaft is sleeved with a spring 22, the spring 22 is pressed against the pressing block 21 and the transverse plate 61, the upper end of the pressing block 21 is in rolling fit with one end of the lever 23 through pin shaft connection, the middle part of the lever 23 is perpendicularly inserted between the missing portion 116, the middle part 24 of the pressing block 23 is abutted against the pressing block 21 and the two ends of the two end of the pressing block 24 are fixed on the two sides of the supporting frame 25, the pressing block 60 are fixedly arranged opposite to the two ends 25 of the pressing block 60 are movably arranged in the supporting frame 25, and the other end 25 is exposed opposite to the outer side 25 is opposite to the supporting frame 25, and the pressing frame 25 is exposed. When the mastoid spreader needs to be adjusted, the button 25 is pressed down, the button 25 presses the groove to apply a pressure to the lever 23, the lever 23 rotates around the rotating shaft 24 to enable the pressing block 21 at the other end to lift up against the elastic force of the spring 22, the pressing block 21 is separated from the rack surface of the inner frame 111, the inner frame 111 or the outer frame 112 can be pushed by hands to adjust the folding condition of the first hook 40, the first locking mechanism 20 is adopted for locking when the lengths of the first frame 11 and the second frame 12 are adjusted, and the first locking mechanism 20 can be matched with the first frame 11 or the second frame 12.

For convenience of use, the button 25 includes a cylindrical big end and a hemispherical small end, the big end is exposed outside the supporting frame 60, the big end and the small end are connected by a column, and the column passes through the plate surface of the transverse plate 61 of the supporting frame 60 freely. The big end is the place that the finger pressed, and area of contact is great, conveniently presses.

Further, the second locking mechanism 30 and the first locking mechanism 20 have the same structure, and similarly, the second locking mechanism 30 may be a piece that is engaged with the second locking mechanism 30 and the third frame 13, or the second locking mechanism 30 and the fourth frame 14 may be engaged.

Preferably, the positioning shafts are more than two and are arranged at intervals, and the springs 22 are more than two and are arranged at intervals, so as to increase stability.

It should be understood that the above-described specific embodiments are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications which extend from the spirit of the present invention are within the scope of the present invention.

Claims

1. The mastoid spreader with the length and width adjustable in two directions is characterized in that: the folding and unfolding device comprises a rectangular frame (10), wherein the lengths of a first side frame (11) and a second side frame (12) in the length direction of the frame (10) can be adjusted simultaneously and can be locked through a first locking mechanism (20) on any stroke, the lengths of a third side frame (13) and a fourth side frame (14) in the width direction of the frame (10) can be adjusted simultaneously and can be locked through a second locking mechanism (30) on any stroke, two rows of first hooks (40) and second hooks (50) which are in one-to-one correspondence and are arranged oppositely are arranged on one side of the frame (10), the first hooks (40) are arranged on the first side frame (11) or the third side frame (13), the first hooks (40) in one row can be folded or unfolded along with the length change of the first side frame (11) or the third side frame (13), the second hooks (50) are arranged on the second side frame (12) or the fourth side frame (14), and the second hooks (50) in the other row can be folded or unfolded along with the length change of the second side frame (12) or the fourth side frame (14);

wherein: the first side frame (11) comprises an inner frame (111) and an outer frame (112), one end of the inner frame (111) is inserted into the outer frame (112) from one end of the outer frame (112), the inner frame (111) can slide relative to the outer frame (112), the number of the first hooks (40) is even, one half of the first hooks (40) are arranged on the inner frame (111), the other half of the first hooks (40) are arranged on the outer frame (112), two sides of the outer frame (112) are provided with strip-shaped holes (113), pins (114) are distributed in the strip-shaped holes (113) on two sides, the pins (114) are locked on two sides of the inner frame (111) to prevent the inner frame (111) from being separated from the outer frame (112), one end of the strip-shaped holes (113) on the same side as the first hooks (40) extends to the end of the outer frame (112) where the inner frame (111) is located, the strip-shaped channels (115) are in a closing-in shape, one half of the first hooks (40) can move on the same straight line with the strip-shaped holes (111) in the strip-shaped holes (113) on one side of the other half of the strip-shaped holes (113), and wherein one half of the first hooks (40) are movable to a position overlapping the other half of the first hooks (40);

wherein: the second side frame (12), the third side frame (13) and the fourth side frame (14) have the same composition as the first side frame (11), and the positions of the inner frame and the outer frame in the second side frame (12) are opposite to those of the inner frame (111) and the outer frame (112) in the first side frame (11), and the positions of the inner frame and the outer frame in the third side frame (13) are opposite to those of the inner frame and the outer frame in the fourth side frame (14);

wherein: the cross section of the outer frame (112) of the first side frame (11) is quadrilateral, the middle part of the outer side surface perpendicular to the surface where the first hook (40) is arranged is provided with a strip-shaped missing part (116) consistent with the length direction of the outer frame (112), one end of the outer side surface of the first hook (40) is connected with a supporting frame (60), the supporting frame (60) is formed by enclosing a transverse plate (61) arranged at a parallel interval with the outer frame (112) and two side plates (62) arranged perpendicular to the outer frame (112), the first locking mechanism (20) comprises a pressing block (21), the pressing block (21) is arranged between the missing part (116), the pressing block (21) is abutted against the frame surface of the inner frame (111) of the first side frame (11) and is a rack surface, the abutted surface of the pressing block (21) is a rack surface, so that the pressing block (21) and the inner frame (111) form locking fit, the inner plate surface of the transverse plate (61) of the supporting frame (60) is vertically fixed with a positioning shaft, the end part of the positioning shaft extends into a positioning hole of the pressing block (21) to form clearance fit, the outer part of the positioning shaft is sleeved with a spring (22) and the outer part of the positioning shaft is abutted against one end of the pressing block (21) and the pressing block (21) is abutted against one end of the pressing block (23) through the pressing block (23), the middle part of the lever (23) is vertically inserted into the rotating shaft (24), two ends of the rotating shaft (24) are fixed on two side plates (62) of the supporting frame (60), a groove is formed in the surface of the other end of the lever (23), a button (25) is movably embedded in a transverse plate of the supporting frame (60), the outer end of the button (25) is exposed out of the supporting frame (60), and the inner end of the button (25) is opposite to the groove;

wherein: the positioning shafts are more than two and are arranged at intervals, and the springs (22) are more than two and are arranged at intervals.

2. The mastoid spreader with bi-directionally adjustable length and width according to claim 1, wherein: the button (25) comprises a cylindrical big head end and a hemispherical small head end, the big head end is exposed outside the supporting frame (60), the big head end and the small head end are connected through a column body, and the column body freely passes through the plate surface of the transverse plate (61) of the supporting frame (60).

3. The mastoid spreader with bi-directionally adjustable length and width according to claim 2, wherein: the second locking mechanism (30) and the first locking mechanism (20) are identical in structure.