CN111228025B - External fixing device shared by Kreb's fracture and Smith's fracture - Google Patents
External fixing device shared by Kreb's fracture and Smith's fracture Download PDFInfo
- Publication number
- CN111228025B CN111228025B CN202010043412.9A CN202010043412A CN111228025B CN 111228025 B CN111228025 B CN 111228025B CN 202010043412 A CN202010043412 A CN 202010043412A CN 111228025 B CN111228025 B CN 111228025B
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- ring
- fracture
- clamping ring
- clamp
- ratchet mechanism
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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
- A61F5/05—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for immobilising
- A61F5/058—Splints
- A61F5/05841—Splints for the limbs
- A61F5/05858—Splints for the limbs for the arms
- A61F5/05866—Splints for the limbs for the arms for wrists, hands, fingers or thumbs
-
- 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
- A61F5/05—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for immobilising
Abstract
The utility model provides an outer fixing device of kreb's fracture and smith fracture sharing, relates to medical instrument technical field, including first clamp, second clamp and third clamp, the same structure of first clamp, second clamp and third clamp includes the snap ring, the below swing joint who goes up the snap ring has lower snap ring, go up the equal fixedly connected with blotter in inside of snap ring and lower snap ring, the equal swing joint in the outside of going up snap ring and lower snap ring has the regulation pole, the bottom swing joint who adjusts the pole has the jack catch. This external fixation device of kreb's fracture and smith fracture sharing through first clamp ring, second clamp ring and third clamp ring, can be with patient's hand centre gripping, guarantees that fracture position can not take place to remove in the use, has increased the device's stability and security, through connecting rod and steel cable, can make the connection between first clamp ring, second clamp ring and the third clamp ring more stable.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an external fixing device for both Kreb fracture and Smith fracture.
Background
The Critical fracture and the Smith fracture are fractures which are frequently generated on hands of a human body, different modes are required for correcting and fixing the two fractures, the Critical fracture is fixed at a palm bending position, a wrist needs to be bent towards the palm side, namely downwards, the fixing mode of the Smith fracture is opposite to that of the Critical fracture, the wrist needs to be bent upwards, gypsum is generally used for fixing the two fractures at present, the gypsum cannot be reused after being detached and is not suitable for the two fracture types, the fixed part cannot move generally after the gypsum is fixed, but the fracture part needs to move properly to accelerate the subsidence of swelling, relieve the muscle atrophy and the adhesion degree of tendons and prevent the joint stiffness when being corrected.
Based on the above-mentioned problems, the inventors propose an external fixation device for both kreb and smith fractures, which has the advantage of being reusable, and at the same time, is suitable for both kreb and smith fracture types and facilitates the movement of the fracture site of the patient.
Disclosure of Invention
In order to realize the advantages of repeated use, simultaneously, the invention can be suitable for two fracture types of the Kreb fracture and the Smith fracture and is beneficial to the movement of the fracture part of a patient, the invention provides the following technical proposal: an external fixing device shared by the Kreb's fracture and the Smith's fracture comprises a first clamp ring, a second clamp ring, a third clamp ring, a connecting rod, a steel cable, an upper clamp ring, a lower clamp ring, a buffer pad, an adjusting rod, a clamping jaw, a locking buckle, a hinge, a knob, a threading seat, an adjusting shaft, a first ratchet mechanism, a second ratchet mechanism, a fixed ratchet and a reset spring.
Wherein: the first ratchet mechanism comprises a ratchet body, a movable block, a clamping block and a limiting spring.
In detail:
and a connecting rod and a steel cable are respectively and movably connected among the first clamping ring, the second clamping ring and the third clamping ring.
The structure that first clamp, second clamp and third clamp are the same includes the snap ring, the below swing joint who goes up the snap ring has lower snap ring, go up the equal fixedly connected with blotter in inside of snap ring and lower snap ring, the equal swing joint in the outside of going up snap ring and lower snap ring has the regulation pole, the bottom swing joint of regulation pole has the jack catch, go up the left and right both sides between snap ring and the lower snap ring swing joint respectively have locking to detain and the hinge.
The last snap ring of first clamp and the equal swing joint in one side of snap ring and the lower snap ring of third clamp to one side of back have the knob, the last snap ring of second clamp and the equal swing joint in one side of snap ring to the back have the threading seat down.
The bottom of the knob is movably connected with an adjusting shaft, the outer side of the adjusting shaft of the first clamping ring is fixedly connected with a first ratchet mechanism, the outer side of the adjusting shaft of the second clamping ring is fixedly connected with a second ratchet mechanism, the outer sides of the first ratchet mechanism and the second ratchet mechanism are both movably connected with a fixed ratchet wheel, and the bottoms of the first ratchet mechanism and the second ratchet mechanism are both movably connected with a reset spring.
The first ratchet mechanism comprises a ratchet body, a movable block is movably connected inside the ratchet body, a clamping block is fixedly connected to the bottom of the movable block, and a limiting spring is fixedly connected to the bottom of the clamping block.
Preferably, the first clamping ring, the second clamping ring and the third clamping ring have the same size.
Preferably, the two fixed ratchet wheels on the first clamping ring and the two fixed ratchet wheels on the third clamping ring are respectively and fixedly connected with the upper clamping ring and the lower clamping ring.
Preferably, the two movable blocks penetrate through and extend to the outer sides of the first ratchet mechanism and the second ratchet mechanism respectively.
Preferably, the bottoms of the two limiting springs are fixedly connected with the first ratchet mechanism and the second ratchet mechanism respectively.
Preferably, the size of the fixture block is larger than that of the movable block.
Preferably, the threading seat and the adjusting shaft are positioned on the same plane.
Compared with the prior art and products, the invention has the beneficial effects that:
1. this external fixation device of kreb's fracture and smith fracture sharing, through first clamp, second clamp and third clamp, can be with patient's hand centre gripping, guarantee that fracture position can not take place to remove in the use, the stability and the security of the device have been increased, through connecting rod and steel cable, can make first clamp, connection between second clamp and the third clamp is more stable, mutual stability between each structure of the device has been increased, buckle and hinge under with through last snap ring and locking, can make the device be half face state of opening and shutting, make things convenient for patient's use, through adjusting the screw thread that the pole outside set up, can adjust according to different patient's hand condition, the practicality and the commonality of the device have been increased.
2. This external fixation device of kr's fracture and smith fracture sharing, through knob and regulating spindle, can adjust the length of steel cable, through the regulation to steel cable length, can make first clamp ring, inclination between second clamp ring and the third clamp ring adjusts, can realize that the device is applicable to the fixed of kr's fracture and smith fracture, the application range of the device has been increased, through first ratchet and second ratchet, can guarantee to adjust certain length back with the steel cable, the steel cable can not take place to remove, the stability when using has been increased.
3. This external fixation device of kreb's fracture and smith fracture sharing, utilize the design that half face opened and shut, can conveniently take in the use, adjust through the position to regulating lever and jack catch, can make the device be applicable to the patient of different hand sizes, the commonality of the device has been increased, and simultaneously, the patient can utilize knob and regulating spindle to adjust the length of steel cable according to self condition, make and can carry out certain activity by the fixed part, be favorable to the recovery in later stage, in addition, the device can reuse, certain cost has been saved.
Drawings
FIG. 1 is a top view of the structure of the present invention;
FIG. 2 is a left side view of the structure of the present invention;
FIG. 3 is a schematic view of a first clamp ring connection structure according to the present invention;
FIG. 4 is a schematic view of a second clamp ring connection according to the present invention;
FIG. 5 is a schematic diagram of the first embodiment of the present invention after structure adjustment;
FIG. 6 is a schematic diagram of the second embodiment of the present invention after structure adjustment;
FIG. 7 is a cross-sectional view of the adjusting shaft and first ratchet mechanism connection structure of the present invention;
FIG. 8 is a schematic diagram of the movement traces of the adjusting shaft and the first ratchet mechanism according to the present invention;
FIG. 9 is a top view of the first ratchet mechanism of the present invention;
FIG. 10 is a cross-sectional top view of the first ratchet mechanism of the present invention;
FIG. 11 is a schematic diagram of the motion trajectory of the movable block according to the present invention;
FIG. 12 is an enlarged view taken at A of FIG. 10 in accordance with the present invention;
FIG. 13 is a top view of the fixed ratchet structure of the first clamp ring of the present invention;
FIG. 14 is the present invention; first ratchet mechanism and fixed ratchet on first clamp ring top view
FIG. 15 is a top view of the second ratchet mechanism of the present invention;
FIG. 16 is a cross-sectional top view of the second ratchet mechanism of the present invention;
FIG. 17 is a top view of a fixed ratchet structure on a third clamp ring of the present invention;
FIG. 18 is a top view of the second ratchet mechanism and the fixed ratchet on the third clamping ring according to the present invention.
In the figure: 1-a first clamp ring, 2-a second clamp ring, 3-a third clamp ring, 4-a connecting rod, 5-a steel cable, 6-an upper clamp ring, 7-a lower clamp ring, 8-a buffer pad, 9-an adjusting rod, 10-a jaw, 11-a locking buckle, 12-a hinge, 13-a knob, 14-a threading seat, 15-an adjusting shaft, 16-a first ratchet mechanism, 17-a second ratchet mechanism, 18-a fixed ratchet, 19-a reset spring, 161-a ratchet body, 162-a movable block, 163-a fixture block and 164-a limiting spring.
Detailed Description
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, and it is obvious that the described embodiments 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.
Please refer to fig. 1-18:
the external fixing device shared by the Kreb fracture and the Smith fracture comprises a first clamping ring 1, a second clamping ring 2, a third clamping ring 3, a connecting rod 4, a steel cable 5, an upper clamping ring 6, a lower clamping ring 7, a buffer pad 8, an adjusting rod 9, a claw 10, a locking buckle 11, a hinge 12, a knob 13, a threading seat 14, an adjusting shaft 15, a first ratchet mechanism 16, a second ratchet mechanism 17, a fixed ratchet 18 and a reset spring 19.
Wherein: the first ratchet mechanism 16 includes a ratchet body 161, a movable block 162, a latch block 163, and a limit spring 164.
And (2) supplementary:
a. the four claws 10 are all curved surfaces, the centers of the four claws 10 are at the same point, and the first clamp ring 1, the second clamp ring 2 and the third clamp ring 3 have the same size.
b. The adjusting rod 9 penetrates through and extends into the upper snap ring 6 and the lower snap ring 7, threads are arranged on the outer side of the adjusting rod 9, and the two fixed ratchet wheels 18 on the first clamp ring 1 and the two fixed ratchet wheels 18 on the third clamp ring 3 are fixedly connected with the upper snap ring 6 and the lower snap ring 7 respectively.
c. The wire rope 5 passes through the threading seat 14, and both ends of the wire rope 5 are respectively wound on the outer sides of the two adjusting shafts 15 in the horizontal direction, and the two movable blocks 162 respectively penetrate through and extend to the outer sides of the first ratchet mechanism 16 and the second ratchet mechanism 17.
And (2) supplementary:
d. the movable block 162 of the first ratchet mechanism 16 is matched with the fixed ratchet wheel 18 of the first clamp ring 1, the movable block 162 of the second ratchet mechanism 17 is matched with the fixed ratchet wheel 18 of the second clamp ring 2, and the bottoms of the two limiting springs 164 are fixedly connected with the first ratchet mechanism 16 and the second ratchet mechanism 17 respectively.
e. The first ratchet mechanism 16 and the second ratchet mechanism 17 have the same structure, both the two movable blocks 162 have curved surfaces, the curved surfaces of the two movable blocks 162 have opposite directions, and the size of the fixture block 163 is larger than that of the movable block 162.
f. The fixed ratchet wheel 18 of the first clamp ring 1 and the fixed ratchet wheel 18 of the second clamp ring 2 are the same in shape and size, the tooth directions of the two fixed ratchet wheels 18 are opposite, and the threading seat 14 and the adjusting shaft 15 are located on the same plane.
In use, since the first ratchet mechanism 16 and the second ratchet mechanism 17 have the same structure, the two movable blocks 162 have curved surfaces, and the curved surfaces of the two movable blocks 162 have opposite directions, the fixed ratchet 18 of the first clamp ring 1 and the fixed ratchet 18 of the second clamp ring 2 have the same shape and size, and the teeth of the two fixed ratchets 18 have opposite directions, that is, when the movable blocks 162 and the fixed ratchets 18 are in a meshed state, the first ratchet mechanism 16 can rotate clockwise, and the second ratchet mechanism 17 can rotate counterclockwise.
When the first ratchet mechanism 16 rotates clockwise, the fixed ratchet 18 can press the movable block 162 in the first ratchet mechanism 16 to contract inward, i.e. the movable block 162 and the fixed ratchet 18 rotate clockwise when in a meshed state, and similarly, when the two ratchet mechanisms 17 rotate counterclockwise, the fixed ratchet 18 can press the movable block 162 in the second ratchet mechanism 17 to contract inward, i.e. the movable block 162 and the fixed ratchet 18 rotate counterclockwise when in a meshed state.
The above structure and process are shown in FIGS. 9-18.
The knob 13 connected with the upper clamping ring 6 on the first clamping ring 1 is lifted upwards, the adjusting shaft 15 is connected with the knob 13, and the first ratchet mechanism 16 is connected with the adjusting shaft 15, so that the first ratchet mechanism 16 can synchronously move along with the knob 13 at the moment, namely, the first ratchet mechanism 16 and the movable block 162 are disengaged from the fixed ratchet 18 at the moment, the adjusting shaft 15 can be driven to synchronously move in the same direction by rotating the knob 13 anticlockwise at the moment, and the steel cable 5 can be retracted to reduce the length of the steel cable 5 because the two ends of the steel cable 5 are respectively wound on the outer sides of the two adjusting shafts 15 in the horizontal direction, and in the process, the second ratchet mechanism 17 and the movable block 162 on the third clamping ring 3 synchronously rotate in the same direction along with the adjusting shaft 15.
The above structure and process are shown in FIGS. 7-8.
The length of the steel cable 5 of the snap ring 6 on the first clamp ring 1 and the third clamp ring 3 can be reduced through the above process, while the length of the steel cable 5 of the snap ring 7 under the first clamp ring 1 and the third clamp ring 3 is not changed, and at this time, the first clamp ring 1, the second clamp ring 2 and the third clamp ring 3 are in an upward bending form, and at this time, the steel cable can be used for fixing patients with Smith fracture type.
Please refer to fig. 6 for the above structure and process.
The knob 13 connected with the lower snap ring 7 on the first clamp ring 1 is lifted upwards and rotated, through the process and the principle, the length of the steel cable 5 of the lower snap ring 7 on the first clamp ring 1 and the third clamp ring 3 can be reduced, the length of the steel cable 5 of the upper snap ring 6 on the first clamp ring 1 and the third clamp ring 3 is unchanged, and at the moment, the first clamp ring 1, the second clamp ring 2 and the third clamp ring 3 are in a downward bending state, so that the fixing device can be used for fixing a patient with a Kreb fracture type.
Please refer to fig. 5 for the above structure and process.
Attached: when patient's fracture position needs appropriate activity, can adjust the length of steel cable 5 through knob 13 by oneself, even the bending angle of first clamp ring 1, second clamp ring 2 and third clamp ring 3 changes, the patient adjusts by oneself according to the condition of self, can directly feel to regulating effect and angle, prevents to cause the secondary damage to fracture position because of angle regulation is too big.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An external fixation device for both a Crick fracture and a Smith fracture, comprising a first clamping ring (1), a second clamping ring (2) and a third clamping ring (3), characterized in that: a connecting rod (4) and a steel cable (5) are respectively and movably connected among the first clamping ring (1), the second clamping ring (2) and the third clamping ring (3);
the structure of the first clamping ring (1), the second clamping ring (2) and the third clamping ring (3) is the same, the structure of the first clamping ring (1), the second clamping ring (2) and the third clamping ring (3) comprises an upper clamping ring (6), a lower clamping ring (7) is movably connected below the upper clamping ring (6), buffering cushions (8) are fixedly connected inside the upper clamping ring (6) and the lower clamping ring (7), adjusting rods (9) are movably connected to the outer sides of the upper clamping ring (6) and the lower clamping ring (7), clamping jaws (10) are movably connected to the bottoms of the adjusting rods (9), and locking buckles (11) and hinges (12) are movably connected to the left side and the right side between the upper clamping ring (6) and the lower clamping ring (7) respectively;
the dorsad sides of the upper snap ring (6) and the lower snap ring (7) of the first clamp ring (1) and the dorsad sides of the upper snap ring (6) and the lower snap ring (7) of the third clamp ring (3) are movably connected with knobs (13), and the dorsad sides of the upper snap ring (6) and the lower snap ring (7) of the second clamp ring (2) are movably connected with threading seats (14);
the bottom of the knob (13) is movably connected with an adjusting shaft (15), the outer side of the adjusting shaft (15) of the first clamping ring (1) is fixedly connected with a first ratchet mechanism (16), the outer side of the adjusting shaft (15) of the third clamping ring (3) is fixedly connected with a second ratchet mechanism (17), the outer sides of the first ratchet mechanism (16) and the second ratchet mechanism (17) are both movably connected with a fixed ratchet wheel (18), and the bottoms of the first ratchet mechanism (16) and the second ratchet mechanism (17) are both movably connected with a return spring (19);
the first ratchet mechanism (16) comprises a ratchet body (161), a movable block (162) is movably connected inside the ratchet body (161), a clamping block (163) is fixedly connected to the bottom of the movable block (162), and a limiting spring (164) is fixedly connected to the bottom of the clamping block (163); the steel cable (5) penetrates through the threading seat (14), and two ends of the steel cable (5) are respectively wound on the outer sides of the two adjusting shafts (15) in the horizontal direction.
2. The external fixation device for both Kreb's fracture and Smith's fracture as claimed in claim 1, wherein: the fixed ratchet wheels (18) of the first clamp ring (1) and the fixed ratchet wheels (18) of the third clamp ring (3) are the same in shape and size, and the tooth directions of the two fixed ratchet wheels (18) are opposite.
3. The external fixation device for both Kreb's fracture and Smith's fracture as claimed in claim 1, wherein: the first ratchet mechanism (16) and the second ratchet mechanism (17) are identical in structure, the two movable blocks (162) are both of curved surface structures, and the curved surface directions of the two movable blocks (162) are opposite.
4. The external fixation device for both Kreb's fracture and Smith's fracture as claimed in claim 1, wherein: the movable block (162) of the first ratchet mechanism (16) is matched with the fixed ratchet wheel (18) of the first clamping ring (1), and the movable block (162) of the second ratchet mechanism (17) is matched with the fixed ratchet wheel (18) of the third clamping ring (3).
5. The external fixation device for both Kreb's fracture and Smith's fracture as claimed in claim 1, wherein: the adjusting rod (9) penetrates through and extends into the upper clamping ring (6) and the lower clamping ring (7), and threads are arranged on the outer side of the adjusting rod (9).
6. The external fixation device for both Kreb's fracture and Smith's fracture as claimed in claim 1, wherein: the four clamping jaws (10) are all curved surfaces, and the centers of the four clamping jaws (10) are located at the same point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043412.9A CN111228025B (en) | 2020-01-15 | 2020-01-15 | External fixing device shared by Kreb's fracture and Smith's fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043412.9A CN111228025B (en) | 2020-01-15 | 2020-01-15 | External fixing device shared by Kreb's fracture and Smith's fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111228025A CN111228025A (en) | 2020-06-05 |
| CN111228025B true CN111228025B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010043412.9A Active CN111228025B (en) | 2020-01-15 | 2020-01-15 | External fixing device shared by Kreb's fracture and Smith's fracture |
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| CN (1) | CN111228025B (en) |
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| CN102805680A (en) * | 2012-09-04 | 2012-12-05 | 于秀月 | Over-articular external fixing splint |
| WO2018129344A2 (en) * | 2017-01-06 | 2018-07-12 | Djo, Llc | Orthosis, related components and methods of use |
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| Publication number | Publication date |
|---|---|
| CN111228025A (en) | 2020-06-05 |
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