CN111281568A - Skin expansion protector for multi-head burn plastic surgery - Google Patents
Skin expansion protector for multi-head burn plastic surgery Download PDFInfo
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- CN111281568A CN111281568A CN202010170860.5A CN202010170860A CN111281568A CN 111281568 A CN111281568 A CN 111281568A CN 202010170860 A CN202010170860 A CN 202010170860A CN 111281568 A CN111281568 A CN 111281568A
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- fixed
- locking
- worm
- skin expansion
- plastic surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/02—Devices for expanding tissue, e.g. skin tissue
Abstract
The invention discloses a multi-head skin expansion protector for burn and plastic surgery, which comprises a fixed seat, a straight rod, a plastic sleeve, an anti-skid protrusion, a connecting column, a fixed ring, a first fixed plate, a second fixed plate, a bottom groove, an adjusting knob, a square rod, a spoon head cover, a fixed sleeve, a first locking bolt, a first fixed threaded pipe, a rotating shaft, a second fixed threaded pipe, a second locking bolt, a worm, a fixed plate, a worm wheel, a fixed cover, a rotating round block and a contact protrusion. The adjustable angle adjusting device is reasonable in structure, angle adjustment of the two spoon head covers can be achieved through the arrangement of the two self-locking angle adjusting mechanisms, the adjustable angle adjusting device is convenient to adapt to different forms of shelters, adjustment is simple, only the adjusting knob needs to be rotated, and after adjustment is conducted, self-locking can be conducted through the self-action and the matching action of the friction limiting rotating mechanism, and limiting can be conducted after adjustment.
Description
Technical Field
The invention relates to a protector, in particular to a multi-head skin expansion protector for burn and plastic surgery, and belongs to the technical field of burn and plastic surgery protection application.
Background
Burn and plastic refers to the plastic repair after burn; malformations after burn and trauma are manifested as tissue defects, displacement or hyperplasia; the patients with mild clinical manifestations involve aesthetic appearance, and the patients with severe clinical manifestations often suffer from dysfunction and heavy psychological burdens.
Skin expansion protector need be used in the burn plastic, protects, and the spoon head cover of current skin expansion protector adjusts the back, needs artifical manually operation to lock to carry out the fixed of position, when avoiding using, appear removing, its regulation back, probably can't carry out the auto-lock, it is possibly inconvenient to use. Therefore, a skin expansion protector for multi-head burn plastic is provided to solve the above problems.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a skin expansion protector for multi-head burn surgery.
The invention realizes the aim through the following technical scheme, and the skin expansion protector for multi-head burn plastic comprises a holding rod and a fixed seat, wherein a folding locking mechanism is fixedly arranged at the center of the top of the fixed seat, the folding locking mechanism is connected with the bottom end of the holding rod, a connecting column is fixedly arranged at the center of the top of the holding rod, and a fixing ring is fixedly arranged at the top end of the connecting column;
the bottom of the fixed seat is provided with a bottom groove which is of a U-shaped structure, two self-locking angle adjusting mechanisms are arranged inside the fixed seat and symmetrically arranged between the two self-locking angle adjusting mechanisms, the output end of each self-locking angle adjusting mechanism is provided with a clamping and locking mechanism, and the clamping and locking mechanism is fixedly provided with a spoon head cover;
a friction limiting rotating mechanism is installed between the input end of the self-locking angle adjusting mechanism and the inner side wall of the fixing seat, and an adjusting knob is fixedly installed on one side of the friction limiting rotating mechanism.
Preferably, the holding rod is composed of a straight rod and a plastic sleeve, the straight rod is of a circular tubular structure, the top end of the straight rod is fixedly sleeved with the plastic sleeve, a plurality of anti-skidding protrusions are uniformly arranged on the surface of the plastic sleeve, and the plastic sleeve is connected with the connecting column.
Preferably, folding locking mechanism comprises first stationary blade, second stationary blade, pivot, the fixed screwed pipe of second and second locking bolt, the equal fixed mounting of first stationary blade and second stationary blade is at the top of fixing base, first stationary blade and pivot one end rigid coupling, and the pivot is terminal to be connected with the straight-bar bottom rotation, the fixed gomphosis of the fixed screwed pipe of second is installed on the second stationary blade, the fixed screwed pipe inner wall threaded connection of second has second locking bolt, second locking bolt's tip and straight-bar surface in close contact with.
Preferably, the first fixing plate and the second fixing plate are arranged in parallel, and the geometric structures of the first fixing plate and the second fixing plate are the same.
Preferably, the clamping and locking mechanism is composed of a fixed sleeve, a first locking bolt and a first fixed threaded pipe, one end of the fixed sleeve is fixedly connected with one side of the spoon head cover, the first fixed threaded pipe is fixedly embedded and installed at the top of the fixed sleeve, the inner wall of the first fixed threaded pipe is in threaded connection with the first locking bolt, the fixed sleeve is sleeved with one end of the square rod, and the end part of the first locking bolt is in close contact with the square rod.
Preferably, the self-locking angle adjusting mechanism comprises a worm wheel and a worm, the worm wheel and the worm are connected in a meshed mode, one end of the worm is rotatably provided with a fixing plate, the top of the fixing plate is fixedly connected with the inner wall of the top of the fixing seat, the other end of the worm is connected with the friction limiting rotating mechanism, the middle of the worm wheel is fixedly provided with an output shaft, the output shaft is rotatably arranged inside the fixing seat, and the output shaft is fixedly sleeved with one end of the square rod.
Preferably, the fixing seat is of a rectangular strip structure, and the inside of the fixing seat is of a hollow structure.
Preferably, the friction limiting and rotating mechanism is composed of a fixed cover, a rotating round block and a contact protrusion, the fixed cover is fixedly connected with the inner side wall of the fixed seat, the rotating round block is embedded and installed inside the fixed cover, the middle of the rotating round block is fixedly connected with the end part of the worm, the number of the contact protrusions is a plurality, the contact protrusions are evenly arranged on the cylindrical surface of the rotating round block, and the contact protrusions are in contact with the inner wall of the fixed cover.
Preferably, a round hole is formed in the middle of one side of the fixed cover, and the round hole is in clearance fit with the end part of the worm.
Preferably, the spoon head cover is of a hemispherical structure, and a rubber ring is fixedly mounted at the bottom edge of the spoon head cover.
The invention has the beneficial effects that:
1. the skin expansion protector for multi-head burn plastic surgery can be covered by the arrangement of the spoon head cover, so that protection is realized, angle adjustment of the two spoon head covers can be realized by the arrangement of the two self-locking angle adjusting mechanisms, the skin expansion protector is convenient to adapt to different forms of sheltering, adjustment is simple, only the rotation of an adjusting knob is needed, and after adjustment, self-locking can be performed through the self-action and the matching action of the friction limiting rotating mechanism, and the adjusted limiting can be performed;
2. the spoon head cover of the skin expansion protector for multi-head burn plastic is connected with the self-locking angle adjusting mechanism through the clamping and locking mechanism, so that the spoon head cover can be separated from the self-locking angle adjusting mechanism, different spoon head covers can be conveniently replaced, and the use applicability of the whole protector is improved;
3. this kind of skin expansion protector for bull burn plastic makes fixing base and holding rod be connected through folding locking mechanism, can fold between to when placing, reduced and deposited the volume, for depositing providing convenient, still set up spliced pole, solid fixed ring on the holding rod simultaneously, can be convenient for hang and place.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the fixing base of the present invention;
FIG. 3 is a schematic structural view of a folding locking mechanism according to the present invention;
FIG. 4 is a schematic structural view of a friction limiting rotation mechanism according to the present invention;
FIG. 5 is a schematic view of the connection structure of the spoon head cover and the square rod of the present invention.
In the figure: 1. the spoon comprises a fixed seat, 2, a straight rod, 3, a plastic sleeve, 4, an anti-skid protrusion, 5, a connecting column, 6, a fixed ring, 7, a first fixed plate, 8, a second fixed plate, 9, a bottom groove, 10, an adjusting knob, 11, a square rod, 12, a spoon head cover, 13, a fixed sleeve, 14, a first locking bolt, 15, a first fixed threaded pipe, 16, a rotating shaft, 17, a second fixed threaded pipe, 18, a second locking bolt, 19, a worm, 20, a fixed plate, 21, a worm wheel, 22, a fixed cover, 23, a rotating round block, 24 and a contact protrusion.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-5, a multi-head skin expansion protector for burn and plastic surgery comprises a holding rod and a fixed seat 1, wherein a folding locking mechanism is fixedly installed at the center of the top of the fixed seat 1, the folding locking mechanism is connected with the bottom end of the holding rod, a connecting column 5 is fixedly installed at the center of the top of the holding rod, and a fixing ring 6 is fixedly installed at the top end of the connecting column 5;
a bottom groove 9 is formed in the bottom of the fixed seat 1, the bottom groove 9 is of a U-shaped structure, two self-locking angle adjusting mechanisms are arranged inside the fixed seat 1 and symmetrically arranged between the two self-locking angle adjusting mechanisms, a clamping and locking mechanism is installed at the output end of each self-locking angle adjusting mechanism, and a spoon head cover 12 is fixedly installed on each clamping and locking mechanism;
a friction limiting and rotating mechanism is installed between the input end of the self-locking angle adjusting mechanism and the inner side wall of the fixing seat 1, and an adjusting knob 10 is fixedly installed on one side of the friction limiting and rotating mechanism.
The handle is composed of a straight rod 2 and a plastic sleeve 3, the straight rod 2 is of a circular tubular structure, the top end of the straight rod 2 is fixedly sleeved with the plastic sleeve 3, a plurality of anti-skid protrusions 4 are uniformly arranged on the surface of the plastic sleeve 3, the plastic sleeve 3 is connected with a connecting column 5, the plastic sleeve 3 is used for holding, and the anti-skid protrusions 4 play a role in skid resistance; the folding locking mechanism comprises a first fixing piece 7, a second fixing piece 8, a rotating shaft 16, a second fixing threaded pipe 17 and a second locking bolt 18, wherein the first fixing piece 7 and the second fixing piece 8 are fixedly arranged at the top of the fixing seat 1, the first fixing piece 7 is fixedly connected with one end of the rotating shaft 16, the tail end of the rotating shaft 16 is rotatably connected with the bottom end of the straight rod 2, the second fixing threaded pipe 17 is fixedly embedded on the second fixing piece 8, the inner wall of the second fixing threaded pipe 17 is in threaded connection with the second locking bolt 18, the end part of the second locking bolt 18 is in close contact with the surface of the straight rod 2, the folding can be carried out, the size is changed, and after the folding, the straight rod 2 can be compressed through the second locking bolt 18 to realize limiting; the first fixing plate 7 and the second fixing plate 8 are arranged in parallel, the geometric structures of the first fixing plate 7 and the second fixing plate 8 are the same, and the first fixing plate 7 and the second fixing plate 8 provide installation positions and spaces; the clamping and locking mechanism is composed of a fixed sleeve 13, a first locking bolt 14 and a first fixed threaded pipe 15, one end of the fixed sleeve 13 is fixedly connected with one side of the spoon head cover 12, the first fixed threaded pipe 15 is fixedly embedded and installed at the top of the fixed sleeve 13, the inner wall of the first fixed threaded pipe 15 is in threaded connection with the first locking bolt 14, the fixed sleeve 13 is sleeved with one end of the square rod 11, and the end part of the first locking bolt 14 is tightly contacted with the square rod 11 and used for installing and fixing the spoon head cover 12; the self-locking angle adjusting mechanism comprises a worm wheel 21 and a worm 19, the worm wheel 21 is meshed with the worm 19, one end of the worm 19 is rotatably provided with a fixing plate 20, the top of the fixing plate 20 is fixedly connected with the inner wall of the top of the fixing seat 1, the other end of the worm 19 is connected with a friction limiting rotating mechanism, the middle of the worm wheel 21 is fixedly provided with an output shaft, the output shaft is rotatably arranged inside the fixing seat 1, the output shaft is fixedly sleeved with one end of the square rod 11 and can be adjusted in angle, and after adjustment, self-locking is carried out through the worm wheel 21 and the worm 19; the fixing seat 1 is of a rectangular strip structure, the interior of the fixing seat 1 is of a hollow structure, and the fixing seat 1 provides an installation space for the self-locking angle adjusting mechanism; the friction limiting and rotating mechanism is composed of a fixed cover 22, a rotating round block 23 and contact protrusions 24, the fixed cover 22 is fixedly connected with the inner side wall of the fixed seat 1, the rotating round block 23 is installed inside the fixed cover 22 in an embedded mode, the middle of the rotating round block 23 is fixedly connected with the end portion of the worm 19, the number of the contact protrusions 24 is multiple, the contact protrusions 24 are evenly arranged on the cylindrical surface of the rotating round block 23, the contact protrusions 24 are in contact with the inner wall of the fixed cover 22, and the contact protrusions 24 are in friction with the inner wall of the fixed cover 22 to provide limiting; a round hole is formed in the middle of one side of the fixed cover 22, the round hole is in clearance fit with the end part of the worm 19, and the round hole is used for the end part of the worm 19 to penetrate through; the spoon head cover 12 is of a hemispherical structure, a rubber ring is fixedly mounted at the bottom edge of the spoon head cover 12, and the spoon head cover 12 protects and shields the spoon head.
When the spoon head cover 12 needs to be replaced, the first locking bolt 14 is loosened, the first locking bolt 14 stops pressing the square rod 11, so that the limiting of the square rod 11 is cancelled, the spoon head cover 12 can be taken down, different spoon head covers 12 are replaced, the fixing sleeve 13 on the spoon head cover 12 is sleeved with the square rod 11, then the first locking bolt 14 is screwed, the square rod 11 is pressed, the limiting is realized, and the replacement is completed;
when the angle is required to be adjusted, the adjusting knob 10 is rotated, the adjusting knob 10 drives the rotating round block 23 to rotate in the fixed cover 22 and further drives the worm 19 to rotate, when the worm 19 rotates, the worm wheel 21 and the output shaft are driven to rotate together through meshing transmission, the output shaft drives the square rod 11 to rotate, the square rod 11 changes the position of the spoon head cover 12, so that adjustment is realized, after adjustment, the position is limited through self-locking between the worm wheel 21 and the worm 19 and friction between the contact bulge 24 and the inner wall of the fixed cover 22, and when the spoon is used, manual limiting operation is not needed, and convenience is brought to use;
when the folding type straight rod 2 is used and stored, the second locking bolt 18 is unscrewed to stop the compression of the straight rod 2, the limiting of the straight rod 2 is removed, the straight rod 2 can be folded and stored through the rotation of the rotating shaft 16, the storage volume is reduced, and after the folding type straight rod 2 is folded, the second locking bolt 18 is screwed to compress the straight rod 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A skin expansion protector for multi-head burn plastic surgery is characterized in that: the folding locking device comprises a holding rod and a fixed seat (1), wherein a folding locking mechanism is fixedly installed at the center of the top of the fixed seat (1), the folding locking mechanism is connected with the bottom end of the holding rod, a connecting column (5) is fixedly installed at the center of the top of the holding rod, and a fixing ring (6) is fixedly installed at the top end of the connecting column (5);
a bottom groove (9) is formed in the bottom of the fixed seat (1), the bottom groove (9) is of a U-shaped structure, two self-locking angle adjusting mechanisms are arranged inside the fixed seat (1) and symmetrically arranged between the two self-locking angle adjusting mechanisms, a clamping and locking mechanism is installed at the output end of each self-locking angle adjusting mechanism, and a spoon head cover (12) is fixedly installed on each clamping and locking mechanism;
a friction limiting and rotating mechanism is installed between the input end of the self-locking angle adjusting mechanism and the inner side wall of the fixing seat (1), and an adjusting knob (10) is fixedly installed on one side of the friction limiting and rotating mechanism.
2. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: the holding rod is composed of a straight rod (2) and a plastic sleeve (3), the straight rod (2) is of a circular tubular structure, the top end of the straight rod (2) is fixedly sleeved with the plastic sleeve (3), a plurality of anti-skidding protrusions (4) are uniformly arranged on the surface of the plastic sleeve (3), and the plastic sleeve (3) is connected with a connecting column (5).
3. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: folding locking mechanism comprises first stationary blade (7), second stationary blade (8), pivot (16), the fixed screwed pipe of second (17) and second locking bolt (18), the equal fixed mounting in the top of fixing base (1) of first stationary blade (7) and second stationary blade (8), first stationary blade (7) and pivot (16) one end rigid coupling, and pivot (16) end and straight-bar (2) bottom rotate to be connected, the fixed gomphosis of second (17) is installed on second stationary blade (8), the fixed screwed pipe of second (17) inner wall threaded connection has second locking bolt (18), the tip and the straight-bar (2) surface in close contact with of second locking bolt (18).
4. The multi-head skin expansion protector for burn plastic surgery according to claim 3, wherein: the first fixing piece (7) and the second fixing piece (8) are arranged in parallel, and the first fixing piece (7) and the second fixing piece (8) are identical in geometric structure.
5. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: centre gripping locking mechanism comprises fixed cover (13), first locking bolt (14) and first fixed screwed pipe (15), one side fixed connection of fixed cover (13) one end and spoon head cover (12), the top at fixed cover (13) is installed to fixed gomphosis of first fixed screwed pipe (15), the inner wall and the first locking bolt (14) threaded connection of first fixed screwed pipe (15), fixed cover (13) cup joint with square pole (11) one end, first locking bolt (14) tip and square pole (11) in close contact with.
6. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: the self-locking angle adjusting mechanism comprises a worm wheel (21) and a worm (19), the worm wheel (21) and the worm (19) are connected in a meshed mode, one end of the worm (19) is rotated to be provided with a fixing plate (20), the top of the fixing plate (20) is fixedly connected with the inner wall of the top of the fixing seat (1), the other end of the worm (19) is connected with a friction limiting rotating mechanism, an output shaft is fixedly arranged in the middle of the worm wheel (21), the output shaft is rotatably arranged inside the fixing seat (1), and the output shaft is fixedly sleeved with one end of the square rod (11).
7. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: the fixing seat (1) is of a rectangular strip structure, and the inside of the fixing seat (1) is of a hollow structure.
8. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: the friction limiting and rotating mechanism is composed of a fixed cover (22), a rotating round block (23) and contact protrusions (24), the fixed cover (22) is fixedly connected with the inner side wall of the fixed seat (1), the rotating round block (23) is embedded in the fixed cover (22), the middle of the rotating round block (23) is fixedly connected with the end portion of the worm (19), the number of the contact protrusions (24) is a plurality, the contact protrusions (24) are uniformly arranged on the cylindrical surface of the rotating round block (23), and the contact protrusions (24) are in contact with the inner wall of the fixed cover (22).
9. The multi-head skin expansion protector for burn plastic surgery according to claim 8, wherein: and a round hole is formed in the middle of one side of the fixed cover (22), and the round hole is in clearance fit with the end part of the worm (19).
10. The multi-head skin expansion protector for burn plastic surgery according to claim 1, wherein: the spoon head cover (12) is of a hemispherical structure, and a rubber ring is fixedly mounted at the bottom edge of the spoon head cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170860.5A CN111281568B (en) | 2020-03-12 | 2020-03-12 | Skin expansion protector for multi-head burn plastic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170860.5A CN111281568B (en) | 2020-03-12 | 2020-03-12 | Skin expansion protector for multi-head burn plastic surgery |
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| Publication Number | Publication Date |
|---|---|
| CN111281568A true CN111281568A (en) | 2020-06-16 |
| CN111281568B CN111281568B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010170860.5A Active CN111281568B (en) | 2020-03-12 | 2020-03-12 | Skin expansion protector for multi-head burn plastic surgery |
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| CN (1) | CN111281568B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112245030A (en) * | 2020-10-30 | 2021-01-22 | 复旦大学附属中山医院 | Skin expansion protector for surgery |
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|---|---|---|---|---|
| CN202641776U (en) * | 2012-06-27 | 2013-01-02 | 赖淑桢 | Portable foldable trolley |
| CN104323806A (en) * | 2014-10-20 | 2015-02-04 | 郑州人民医院 | Operation retractor provided with multi-claw adjusting function |
| CN207970151U (en) * | 2018-01-19 | 2018-10-16 | 于格 | A kind of bull burn shaping skin expansion protector |
| CN208426119U (en) * | 2018-02-02 | 2019-01-25 | 叶蓁蓁 | A kind of human body component detection device |
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2020
- 2020-03-12 CN CN202010170860.5A patent/CN111281568B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202641776U (en) * | 2012-06-27 | 2013-01-02 | 赖淑桢 | Portable foldable trolley |
| CN104323806A (en) * | 2014-10-20 | 2015-02-04 | 郑州人民医院 | Operation retractor provided with multi-claw adjusting function |
| CN207970151U (en) * | 2018-01-19 | 2018-10-16 | 于格 | A kind of bull burn shaping skin expansion protector |
| CN208426119U (en) * | 2018-02-02 | 2019-01-25 | 叶蓁蓁 | A kind of human body component detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112245030A (en) * | 2020-10-30 | 2021-01-22 | 复旦大学附属中山医院 | Skin expansion protector for surgery |
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| CN111281568B (en) | 2021-06-04 |
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