CN112932760A - Traction device capable of prolonging pelvis of lower limb and used with operating table - Google Patents
Traction device capable of prolonging pelvis of lower limb and used with operating table Download PDFInfo
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- CN112932760A CN112932760A CN202110135999.0A CN202110135999A CN112932760A CN 112932760 A CN112932760 A CN 112932760A CN 202110135999 A CN202110135999 A CN 202110135999A CN 112932760 A CN112932760 A CN 112932760A
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- traction
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- 210000004197 pelvis Anatomy 0.000 title claims abstract description 19
- 210000003141 lower extremity Anatomy 0.000 title claims abstract description 14
- 238000003780 insertion Methods 0.000 claims description 25
- 230000037431 insertion Effects 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
- A61F5/042—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for extension or stretching
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- Health & Medical Sciences (AREA)
- Nursing (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention relates to the technical field of medical devices, in particular to a traction device which is matched with an operating table and can prolong pelvis of lower limbs. The device comprises a first base, an extension rod, a second base, an angle adjusting rod, a tractor and a traction bow, wherein the first base is connected to an operating bed, the extension rod comprises a longitudinal rod and a transverse rod, the initial end of the longitudinal rod is inserted into the first base, the tail end of the transverse rod is inserted into the second base, the initial end of the angle adjusting rod is rotatably connected with the second base, the angle adjusting rod is locked on the second base through a first locking part, and the tail end of the angle adjusting rod is connected with the tractor; the tractor comprises a connecting rod, a rotary disc fixedly arranged at one end of the connecting rod, a reel fixedly arranged at the other end of the connecting rod and a traction rope arranged on the reel, wherein the traction rope is connected with the traction bow. The invention can be used in the operation process, conveniently adjust the traction force, has simple structure and convenient disassembly, assembly and use, and can maintain the fracture reduction when the pelvis fracture operation is reduced.
Description
Technical Field
The invention relates to the technical field of medical devices, in particular to a traction device which is matched with an operating table and can prolong pelvis of lower limbs.
Background
At present, lower limb pelvis traction devices are respectively two, the first type is a Brown's frame applied in a ward, and the defects are as follows: (1) need to tie up, need to change the heavy object frequently to regulate and pull the weight, (2) can't be applied in the operation; the second is an operating traction table for operating room applications, which has the following disadvantages: (1) most operation traction beds are complex to disassemble and large in size, and simultaneously need large operation space, (2) the traction angle cannot be adjusted, and (3) the operation traction beds are mainly suitable for femoral tuberosity fracture and incapability of maintaining fracture reduction during pelvis fracture operation reduction.
Therefore, how to provide a lower limb pelvis traction device capable of being extended, which is used together with an operating table, can be used in the operation process, can conveniently adjust the traction force, has a simple structure, is convenient to detach, install and use, and can maintain fracture reduction when the pelvis fracture operation is reduced, which is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a traction device capable of prolonging pelvis of lower limbs, which is matched with an operating bed, overcomes the defects in the prior art, can be used in the operation process, can conveniently adjust the traction force, has a simple structure, is convenient to disassemble, assemble and use, and can maintain fracture reduction in the pelvis fracture operation reduction process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a can prolong low limbs pelvis draw gear with supporting use of operation table, includes first base, extension rod, second base, angle adjusting rod, tractor and traction bow, wherein:
the first base is connected to the operating bed, the extension rod comprises a longitudinal rod and a transverse rod which are sequentially connected, the starting end of the longitudinal rod is inserted into the first base, the insertion depth of the longitudinal rod in the first base can be fixed and adjusted, the tail end of the transverse rod is inserted into the second base, and the insertion depth of the transverse rod in the second base can be fixed and adjusted;
the starting end of the angle adjusting rod is rotatably connected with the second base, the angle adjusting rod can rotate 360 degrees on the vertical plane along the rotating connecting end of the angle adjusting rod and the second base, the angle adjusting rod is locked on the second base through the first locking piece after being adjusted to a proper angle, and the tail end of the angle adjusting rod is connected with the tractor;
the tractor comprises a connecting rod, a rotary disc fixedly arranged at one end of the connecting rod, a reel fixedly arranged at the other end of the connecting rod and a traction rope arranged on the reel, wherein the connecting rod is horizontally arranged and is rotationally connected with the tail end of an angle adjusting rod, a first perforation is formed in the angle adjusting rod, a plurality of second perforations are formed in the rotary disc at intervals along the circumferential direction, second locking parts penetrate into the second perforations from the first perforations, one end of the traction rope is fixed on the reel, and the other end of the traction rope is connected with a traction bow;
during the use, fix first base on the bed body, adjust the degree of depth of the vertical pole of extension rod in first base, adjust the degree of depth of the horizontal pole of extension rod in the second base, lock the extension rod between first base and second base, adjust angle adjusting rod and lock it on the second base through first retaining member behind the angle on the perpendicular, rotating rotary table, the number of turns of winding of adjustment haulage rope on the reel, form through the traction bow to low limbs pelvis and pull, when needs adjustment traction force size, take off second retaining member rotating rotary table, make haulage rope twine the book or unreel, reach the requirement until traction force, it can to insert the second retaining member.
Furthermore, the first base comprises a C-shaped clamping groove, a movable clamping block, a first hand-screwed screw and a second hand-screwed screw, first inserting holes are formed in the upper end face and the lower end face of the C-shaped clamping groove, a longitudinal rod of the extension rod penetrates through the first inserting hole from the upper side and penetrates out of the first inserting hole from the lower side, a first threaded hole is formed in the side face of the C-shaped clamping groove, and the first hand-screwed screw is screwed into the first threaded hole to extrude and fix the longitudinal rod; the inner cavity of the C-shaped clamping groove is provided with a movable clamping block, the movable clamping block is arranged on the side wall of the C-shaped clamping groove in a sliding mode, a longitudinal rod through hole is formed in the movable clamping block, a second threaded hole is formed in the lower end face of the C-shaped clamping groove, a second hand-screwed screw is screwed into the second threaded hole and pushes the movable clamping block to move up and down, and the bed body is clamped between the upper end face of the inner cavity of the C-shaped clamping groove and the movable clamping block; when the device is installed, the side face of the bed body is inserted between the upper end face of the C-shaped clamping groove and the movable clamping block, a second hand-screwed screw is screwed, the second hand-screwed screw pushes the movable clamping block to move upwards, and finally the upper end face of the C-shaped clamping groove and the movable clamping block clamp the bed body, so that the installation can be completed; and penetrating a longitudinal rod of the extension rod into the first insertion hole above the first base from the first insertion hole below the first base, and screwing the first hand screw after the position of the longitudinal rod is adjusted.
Furthermore, the upper end surface of the inner cavity of the C-shaped clamping groove and the upper end surface of the movable clamping plate are provided with accommodating grooves used for clamping the edge of the bed plate.
Furthermore, the second base comprises a connecting block, an angle adjusting plate and a third hand screw, a second jack is formed in the connecting block, a transverse rod of the extension rod penetrates through the second jack, a third threaded hole is formed in the side face of the connecting block, the third hand screw is screwed into the third threaded hole to extrude and fix the transverse rod, a semicircular angle adjusting plate is arranged on the upper end face of the connecting block, the angle adjusting rod is rotatably connected with the circle center of the angle adjusting plate, a third through hole is formed in the angle adjusting rod, a plurality of fourth through holes are distributed in the edge of the angle adjusting plate in a semicircular array mode, the first locking piece is inserted into the third through hole and one of the fourth through holes, when the angle of the angle adjusting rod needs to be adjusted, the first locking piece is pulled out, the angle adjusting rod swings on the angle adjusting plate like a pointer, and after the angle adjusting rod swings to a proper angle, the first locking piece is inserted into the third through hole and the corresponding fourth through hole.
Furthermore, first retaining member and second retaining member all include the inserted bar and set up in the first handle of inserted bar one end.
Further, the length of the plug rod is larger than 10 cm.
Furthermore, a second handle is arranged on the rotating disc.
Furthermore, the length of the longitudinal rod of the extension rod is 8-15cm, and the length of the transverse rod is 35-45 cm.
The invention has the beneficial effects that: compared with the prior art, the traction device capable of prolonging the pelvis of the lower limb, which is used with the operating table, has the following advantages: (1) the traction force can be adjusted by rotating the turntable, and the rotation and fixation of the turntable are convenient to control; (2) the device can be used during surgery; (3) the folding and disassembling device has the advantages of simple structure, small occupied space after folding or disassembling, convenient installation and use and small required operation space; (4) the traction angle can be flexibly adjusted by adjusting the angle adjusting rod; (5) can maintain the fracture reduction when the pelvis fracture operation is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first base according to the present invention;
FIG. 4 is a schematic view of a connection structure of a first base, an extension rod and a second base according to the present invention;
FIG. 5 is a schematic view of the connection structure of the angle adjustment lever and the retractor of the present invention;
FIG. 6 is a schematic view of a first securing member of the present invention;
the angle adjusting device comprises a first base 1, a C-shaped clamping groove 101, a movable clamping block 102, a first hand-screwed screw 103, a second hand-screwed screw 104, a first insertion hole 105, a first accommodating groove 106, an extension rod 2, a longitudinal rod 201, a transverse rod 202, a second base 3, a connecting block 301, an angle adjusting plate 302, a third hand-screwed screw 303, a second insertion hole 304, a fourth insertion hole 305, an angle adjusting rod 4, a first insertion hole 401, a third insertion hole 402, a tractor 5, a connecting rod 501, a rotating disc 502, a winding wheel 503, a traction rope 504, a second insertion hole 505, a second handle 506, a traction bow 6, a first locking piece 7, a second locking piece 8, a 7801 insertion rod 7802 and a first handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the embodiment shown in fig. 1-6, an extendable lower extremity pelvic traction apparatus for use with an operating table comprises a first base 1, an extension rod 2, a second base 3, an angle adjustment rod 4, a retractor 5, and a traction bow 6, wherein:
the first base 1 is connected to an operating bed, the extension rod 2 comprises a longitudinal rod 201 and a transverse rod 202 which are sequentially connected, the initial end of the longitudinal rod 201 is inserted into the first base 1, the insertion depth of the longitudinal rod 201 in the first base 1 can be fixed and adjusted, the tail end of the transverse rod 202 is inserted into the second base 3, and the insertion depth of the transverse rod 202 in the second base 3 can be fixed and adjusted;
the starting end of the angle adjusting rod 4 is rotatably connected with the second base 3, the angle adjusting rod 4 can rotate on the vertical plane for 360 degrees along the rotating connecting end of the angle adjusting rod 4 and the second base 3, the angle adjusting rod 4 is locked on the second base 3 through the first locking piece 7 after being adjusted to a proper angle, and the tail end of the angle adjusting rod 4 is connected with the tractor 5;
the tractor 5 comprises a connecting rod 501, a rotary disc 502 fixedly arranged at one end of the connecting rod 501, a reel 503 fixedly arranged at the other end of the connecting rod 501 and a traction rope 504 arranged on the reel 503, wherein the connecting rod 501 is horizontally arranged and is rotatably connected with the tail end of an angle adjusting rod 4, a first perforation 401 is arranged on the angle adjusting rod 4, a plurality of second perforation 505 are circumferentially arranged on the rotary disc 502 at intervals, a second locking piece 8 penetrates into the second perforation 505 from the first perforation 401, one end of the traction rope 504 is fixed on the reel 503, and the other end of the traction rope 504 is connected with a traction bow 6;
during the use, fix first base 1 on the bed body, adjust the degree of depth of 2 vertical poles 201 of extension rod in first base 1, adjust the degree of depth of 2 horizontal poles 202 of extension rod in second base 3, lock extension rod 2 between first base 1 and second base 3, adjust angle adjusting rod 4 and lock it on second base 3 through first retaining member 7 behind the angle on the perpendicular, rotary table 502, the number of turns of winding of adjustment haulage rope 504 on reel 503, form through traction bow 6 and pull the lower limbs pelvis, when needs adjustment traction force size, take off 8 rotary table 502 of second retaining member, make haulage rope 504 twine or unreel, until traction force reaches the requirement, it can to insert second retaining member 8.
In this embodiment, the first base 1 includes a "C" shaped slot 101, a movable clamping block 102, a first hand screw 103 and a second hand screw 104, the upper end surface and the lower end surface of the "C" shaped slot 101 are both provided with a first insertion hole 105, a longitudinal rod 201 of the extension rod 2 penetrates through the first insertion hole 105 from the upper side and penetrates out of the first insertion hole 105 from the lower side, the side surface of the "C" shaped slot 101 is provided with a first threaded hole, and the first hand screw 103 is screwed into the first threaded hole to press and fix the longitudinal rod 201; the inner cavity of the C-shaped clamping groove 101 is provided with a movable clamping block 102, the movable clamping block 102 is arranged on the side wall of the C-shaped clamping groove in a sliding mode, a longitudinal rod through hole is formed in the movable clamping block 102, a second threaded hole is formed in the lower end face of the C-shaped clamping groove 101, a second hand-screwed screw 104 is screwed into the second threaded hole, the second hand-screwed screw 104 pushes the movable clamping block 102 to move up and down, and the bed body is clamped between the upper end face of the inner cavity of the C-shaped clamping groove 101 and the movable clamping block 102; when the device is installed, the side face of the bed body is inserted between the upper end face of the C-shaped clamping groove 101 and the movable clamping block 102, the second hand-screwed screw 104 is screwed, the second hand-screwed screw 104 pushes the movable clamping block 102 to move upwards, and finally the upper end face of the C-shaped clamping groove 101 and the movable clamping block 102 clamp the bed body, so that the installation can be completed; the longitudinal rod 201 of the extension rod 2 is inserted into the first insertion hole 105 above the first base 1 and is penetrated out of the first insertion hole 105 below the first base 1, and the first hand screw 103 is screwed after the position of the longitudinal rod 201 is adjusted.
In this embodiment, the upper end surface of the inner cavity of the C-shaped clamping groove 101 and the upper end surface of the movable clamping plate 102 are both provided with accommodating grooves 106 for clamping the edge of the bed plate.
In this embodiment, the second base 3 includes a connection block 301, an angle adjustment plate 302 and a third hand screw 303, the connection block 301 is provided with a second insertion hole 304, the transverse rod 202 of the extension rod 2 passes through the second insertion hole 304, a third threaded hole is formed in a side surface of the connection block 301, the third hand screw 303 is screwed into the third threaded hole to press and fix the transverse rod 202, a semicircular angle adjustment plate 302 is arranged on an upper end surface of the connection block 301, one end of the angle adjustment rod 4 is rotatably connected to a center of the angle adjustment plate 302, a third through hole 402 is formed in the angle adjustment rod 4, a plurality of fourth through holes 305 are arranged in a semicircular array at an edge of the angle adjustment plate 302, the first locking member 7 is inserted into the third through hole 402 and one of the fourth through holes 305, when an angle of the angle adjustment rod 4 needs to be adjusted, the first locking member 7 is pulled out, and the angle adjustment rod 4 swings on the angle adjustment, after swinging to a suitable angle, the first locking member 7 is inserted into the third through hole 402 and the corresponding fourth through hole 305.
In this embodiment, each of the first locking member 7 and the second locking member 8 includes a insertion rod 7801 and a first handle 7802 provided at one end of the insertion rod 7801.
In this embodiment, the length of the insertion rod 7801 is greater than 10 cm.
In this embodiment, the turntable 502 is provided with a second handle 506.
In this embodiment, the length of the longitudinal rod 201 of the extension rod 2 is 8-15cm, and the length of the transverse rod 202 is 35-45 cm.
In this embodiment, a tension detector is disposed on the pulling rope 504.
The working principle is as follows: when the traction device capable of extending the lower limb pelvis is used, a first base 1 is fixed on a bed body, the depth of a longitudinal rod 201 of an extension rod 2 in the first base 1 is adjusted, the depth of a transverse rod 202 of the extension rod 2 in a second base 3 is adjusted, the extension rod 2 is locked between the first base 1 and the second base 3, the angle of an angle adjusting rod 4 on a vertical plane is adjusted and then locked on the second base 3 through a first locking piece 7, a rotary table 502 is rotated, the number of turns of traction ropes 504 wound on a winding wheel 503 is adjusted, the lower limb pelvis is dragged through a traction bow 6, when the traction force needs to be adjusted, the rotary table 502 is rotated by taking down a second locking piece 8, the traction ropes 504 are wound or unwound until the traction force meets the requirement, and the second locking piece 8 is inserted.
The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a can prolong low limbs pelvis draw gear with supporting use of operation table which characterized in that: including first base, extension rod, second base, angle adjusting rod, tractor and traction bow, wherein:
the first base is connected to the operating bed, the extension rod comprises a longitudinal rod and a transverse rod which are sequentially connected, the starting end of the longitudinal rod is inserted into the first base, the insertion depth of the longitudinal rod in the first base can be fixed and adjusted, the tail end of the transverse rod is inserted into the second base, and the insertion depth of the transverse rod in the second base can be fixed and adjusted;
the starting end of the angle adjusting rod is rotatably connected with the second base, the angle adjusting rod can rotate on the vertical plane for 360 degrees along the rotating connecting end of the angle adjusting rod and the second base, the angle adjusting rod is locked on the second base through a first locking part, and the tail end of the angle adjusting rod is connected with the tractor;
the tractor includes the connecting rod, fixed set up in the carousel of connecting rod one end, fixed set up in the reel of the connecting rod other end and set up the haulage rope on the reel, the connecting rod rotates with angle adjusting rod's end to be connected, is provided with first perforation on the angle adjusting rod, is provided with a plurality of second perforation along the circumference interval on the carousel, and the second retaining member penetrates the second perforation from first perforation, the one end of haulage rope is fixed on the reel, and the other end and the traction bow of haulage rope are connected.
2. The extendable lower extremity pelvic traction apparatus of claim 1, wherein: the first base comprises a C-shaped clamping groove, a movable clamping block, a first hand-screwed screw and a second hand-screwed screw, first inserting holes are formed in the upper end face and the lower end face of the C-shaped clamping groove, a longitudinal rod of the extension rod penetrates through the first inserting holes from the upper part and penetrates out of the first inserting holes from the lower part, a first threaded hole is formed in the side face of the C-shaped clamping groove, and the first hand-screwed screw is screwed into the first threaded hole to extrude and fix the longitudinal rod; the inner chamber of "C" type draw-in groove is provided with movable clamp splice, and movable clamp splice slides and sets up on the lateral wall of "C" type draw-in groove, has seted up the perforation of longitudinal rod on the movable clamp splice, and the second screw hole has been seted up to the lower terminal surface of "C" type draw-in groove, and in the second screw hole of second hand screw in, second hand screw promoted movable clamp splice and reciprocated, the bed body centre gripping was between the up end and the movable clamp splice of "C" type draw-in groove inner chamber.
3. The extendable lower extremity pelvic traction apparatus for use with an operating table of claim 2, wherein: the upper end surface of the inner cavity of the C-shaped clamping groove and the upper end surface of the movable clamping plate are provided with accommodating grooves used for clamping the edge of the bed plate.
4. The extendable lower extremity pelvic traction apparatus of claim 1, wherein: the second base includes connecting block, angle adjusting plate and third hand screw, the second jack has been seted up on the connecting block, the transverse bar of extension rod passes the second jack, the side of connecting block is provided with the third screw hole, the transverse bar extrusion is fixed in third hand screw in third screw hole, the up end of connecting block is provided with semicircular angle adjusting plate, angle adjusting plate rotates with angle adjusting plate's centre of a circle department and is connected, the third perforation has been seted up on the angle adjusting plate, angle adjusting plate's edge semicircular array a plurality of fourth of having arranged is perforated, first retaining member inserts in the third is perforated and one of them fourth is perforated.
5. The extendable lower extremity pelvic traction apparatus of claim 1, wherein: first retaining member and second retaining member all include the inserted bar and set up in the first handle of inserted bar one end.
6. The extendable lower extremity pelvic traction apparatus of claim 5, wherein: the length of the inserting rod is larger than 10 cm.
7. The extendable lower extremity pelvic traction apparatus of claim 1, wherein: and a second handle is arranged on the rotary disc.
8. The extendable lower extremity pelvic traction apparatus of claim 1, wherein: the length of the longitudinal rod of the extension rod is 8-15cm, and the length of the transverse rod is 35-45 cm.
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CN202110135999.0A CN112932760B (en) | 2021-02-01 | 2021-02-01 | Traction device capable of prolonging pelvis of lower limb and used with operating table |
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CN202110135999.0A CN112932760B (en) | 2021-02-01 | 2021-02-01 | Traction device capable of prolonging pelvis of lower limb and used with operating table |
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CN112932760B CN112932760B (en) | 2023-01-24 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113476720A (en) * | 2021-08-19 | 2021-10-08 | 首都医科大学附属北京佑安医院 | Three-cavity two-sac tube fast fixing gravity traction device |
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CN208725979U (en) * | 2018-02-27 | 2019-04-12 | 张丽霞 | A kind of traction device |
CN108670524A (en) * | 2018-06-02 | 2018-10-19 | 曾凤英 | A kind of orthopedic lower limb bone distraction apparatus |
CN209187118U (en) * | 2018-08-30 | 2019-08-02 | 孙东秋 | A kind of clinical orthopaedics therapeutic device |
CN209347351U (en) * | 2018-09-26 | 2019-09-06 | 无锡市人民医院 | The adjustable cervical vertebra traction apparatus of traction angle |
CN109620502A (en) * | 2018-12-06 | 2019-04-16 | 财团法人亚洲大学 | Joint mobilization equipment |
CN110403743A (en) * | 2019-08-19 | 2019-11-05 | 天津正天医疗器械有限公司 | A kind of lower limb traction resetting apparatus |
Cited By (1)
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CN113476720A (en) * | 2021-08-19 | 2021-10-08 | 首都医科大学附属北京佑安医院 | Three-cavity two-sac tube fast fixing gravity traction device |
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