CN108435849B - Bending device for rebuilding bending shaping of bone fracture plate - Google Patents
Bending device for rebuilding bending shaping of bone fracture plate Download PDFInfo
- Publication number
- CN108435849B CN108435849B CN201810229134.9A CN201810229134A CN108435849B CN 108435849 B CN108435849 B CN 108435849B CN 201810229134 A CN201810229134 A CN 201810229134A CN 108435849 B CN108435849 B CN 108435849B
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- rotating wheel
- bending
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- rod
- hole
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- 238000005452 bending Methods 0.000 title claims abstract description 58
- 208000010392 Bone Fractures Diseases 0.000 title claims abstract description 27
- 238000007493 shaping process Methods 0.000 title claims abstract description 20
- 210000000988 bone and bone Anatomy 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 210000003781 tooth socket Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 210000001991 scapula Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
- B21D7/063—Pliers with forming dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Surgical Instruments (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the technical field of bone fracture plate bending apparatuses, in particular to a bending machine for reconstructing bending and shaping of a bone fracture plate, which comprises a rod body, a sleeve, a rotating wheel and a stop piece, wherein the rod body is fixedly connected with the sleeve; the invention can realize 360-degree bending of the node part of the reconstructed bone fracture plate relative to the connecting rod by arranging the locking mechanism for locking or unlocking the rotating wheel on the rod body, and after the rotating wheel is bent for a certain angle by the cooperation of the two bending devices, the rotating wheel can be unlocked by the locking mechanism, and then the rod body is pulled reversely to reset the rotating wheel to be convenient for the hand to hold and apply force so as to continuously drive the bending of the node part.
Description
Technical Field
The invention relates to the technical field of bone plate bending apparatuses, in particular to a bending machine for rebuilding bending and shaping of a bone plate.
Background
The reconstruction bone fracture plate generally comprises a plurality of short barrel rings, the adjacent short barrel rings are fixedly connected through a connecting bridge, because bones of a human body are different from person to person, and the shapes of bones of different parts are different, when bones of parts with complex shapes are fractured, such as a spine, a humerus, a pelvis, a collarbone, a scapula, a pulp socket and the like, the reconstruction bone fracture plate is generally used, and when the reconstruction bone fracture plate is used, the reconstruction bone fracture plate needs to be bent into a shape matched with a bone type fixed by the reconstruction bone fracture plate so as to be matched with the bones better, and the conventional bone fracture plate bending device is inconvenient to use, has a complex structure and is high in cost.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems of inconvenient use, complex structure and high cost of the bone plate bending device in the prior art, the invention provides a bending device for rebuilding bending and shaping of the bone plate.
The technical scheme adopted for solving the technical problems is as follows: the bending machine comprises a rod body, a sleeve, a rotating wheel and a stop piece, wherein the rod body is fixedly connected with the sleeve, the rotating wheel is rotationally arranged in the sleeve, a clamping groove for placing the rebuilt bone plate is formed in the outer peripheral surface of the rotating wheel, a plurality of tooth grooves are distributed on the outer peripheral surface of the rotating wheel along the circumferential direction of the rotating wheel, the stop piece is arranged on the sleeve in a sliding mode, and a plurality of clamping teeth matched with the tooth grooves are arranged on one side, close to the rotating wheel, of the stop piece;
the locking mechanism is used for locking or unlocking the rotating wheel, the locking mechanism utilizes the elasticity of the elastic element to enable the stopping piece to be close to the rotating wheel, and enables the latch on the stopping piece to be meshed with the tooth slot on the rotating wheel, so that the locking of the rotating wheel is realized, and the locking mechanism can enable the stopping piece to be separated relative to the rotating wheel under the action of external force, so that the unlocking of the rotating wheel is realized.
In the scheme, the node part of the reconstruction bone fracture plate is clamped in the clamping groove, 360-degree bending of the node part of the reconstruction bone fracture plate relative to the connecting rod can be realized, in the bending process, as the locking mechanism on the rod body enables the stop piece to be close to the rotating wheel through the elasticity of the elastic element, the clamping teeth on the stop piece are meshed with the tooth grooves on the rotating wheel, the rod body can be pulled to rotate together with the rod body, the sleeve, the rotating wheel and the node part clamped in the clamping groove of the rotating wheel, bending of the node part of the reconstruction bone fracture plate relative to the connecting rod is realized through cooperation of the two bending devices, after the rod body rotates by a certain angle, the rod body deflects to be not convenient for the hand to hold to continue rotating and applying force, at the moment, the stop piece is separated from the rotating wheel through external force, and when the stop piece is pulled after the stop piece is separated from the rotating wheel, the rotating wheel and the node part in the rotating wheel can not follow the rod body any more, and therefore, when the rod body can be pulled in the reverse direction so as to be pulled to enable the rod body to be reset to be convenient for holding and applying force to continue to drive bending of the node part.
Further, the locking mechanism comprises a push rod and an actuating rod, a first inner hole and a second inner hole communicated with the outside are formed in the rod body, the first inner hole and the second inner hole are mutually intersected and communicated, the push rod is slidably arranged in the first inner hole, the head end of the push rod extends out of the first inner hole, the head end of the push rod is fixedly connected with the stop piece, the actuating rod is slidably arranged in the second inner hole, an inclined contact surface is formed on the actuating rod, and the elastic element comprises a first spring used for pushing the push rod to be in contact with the contact surface of the actuating rod and a second spring used for pushing the actuating rod to abut against the push rod;
when no external force acts on the actuating lever, the actuating lever props against the push rod under the action of the second spring, the first spring is in a compressed state, and the push rod pushes the stop piece to enable the latch on the stop piece to be meshed with the tooth slot on the rotating wheel, so that the rotating wheel is locked; when the external force pushes the actuating lever, the second spring is compressed, and the push rod is contacted with the inclined contact surface of the actuating lever, so that the first spring can push the push rod to be contacted with the contact surface of the actuating lever, namely, the push rod can drive the stop piece on the push rod to be separated from the rotating wheel, thereby unlocking the rotating wheel.
Further, the contact surface is inclined outwards from top to bottom, when the actuating rod is pushed upwards, the contact surface on the actuating rod moves upwards together, a space for outwards moving the push rod is provided, and the push rod is close to the actuating rod under the action of the first spring, so that unlocking of the rotating wheel is realized.
In order to be convenient for realize the auto-lock of actuating lever, further, the tail end of push rod outwards extends has the bulge, the bulge is close to the one end terminal surface of actuating lever and the contact surface phase-match of actuating lever, be provided with the spacing face on the actuating lever that is located the top of contact surface, the spacing face is located the top of bulge, supports on the spacing face of actuating lever through the upper surface of bulge, can realize the auto-lock of actuating lever, prevents that the actuating lever from droing in the second hole.
Specifically, the push rod is provided with a step surface, an end cover is fixed at one end part of the first inner hole, which is close to the stop piece, one end of the first spring is propped against the step surface, and the other end of the first spring is propped against the end cover.
Specifically, one end of the second spring is propped against the bottom of the second inner hole, and the other end of the second spring is propped against the top end of the actuating rod.
In order to clearly grasp whether a clamping groove on a stop piece and a tooth groove on the rotating wheel are meshed in place or not when the rotating wheel is unlocked and locked again, a spring hole is formed in the stop piece, an alignment ball is slidably arranged in the spring hole, one end of the alignment ball, which is close to the rotating wheel, protrudes outwards from the spring hole, the alignment ball is matched with the tooth groove of the rotating wheel, an alignment spring for pushing the alignment ball to the tooth groove is arranged in the spring hole, and in the state of unlocking the rotating wheel, when a rod body is rotated, the alignment ball is clamped into one tooth groove, a click sound is generated, the clamping groove on the stop piece is opposite to the tooth groove on the rotating wheel, an actuating rod is loosened at the moment, and the stop piece is meshed in place with the rotating wheel.
In order to facilitate the bending of the joint part, further, a positioning groove for positioning the joint part is formed in the bottom of the clamping groove, and when the joint part is positioned in the positioning groove, the axis of the connecting rod coincides with the axis of the rotating wheel.
In order to reconstruct the loading and unloading of node portion on the bone fracture plate on the draw-in groove of runner, further, the bar breach that communicates with the external world has been seted up to telescopic inner wall, the breach extends to the lower extreme terminal surface from telescopic up end terminal surface, telescopic bottom has the barrel head, be provided with the guide bar on the barrel head, the circular arc groove has been seted up along its circumferencial direction to the bottom terminal surface of runner, the guide bar is arranged in the circular arc groove, telescopic upper end is fixed with the cover, it has the upper shed to run through on the cover, the upper shed outwards extends to the outer peripheral face of cover, set up the lower shed just right with the upper shed on the barrel head, upper shed and lower shed all communicate with the breach, and the setting of barrel head and barrel head is used for restricting the runner in the sleeve.
In order to improve the stability of the joint part of the reconstructed bone fracture plate on the clamping groove of the rotating wheel, further, an upper locking hole is formed in the upper opening, an upper locking ball is arranged in the upper locking hole in a sliding mode, the outer end of the upper locking ball protrudes out of the upper locking hole and is positioned in the upper opening, an upper locking spring is arranged in the upper locking hole, the upper locking spring abuts against the upper locking ball, a lower locking hole is formed in the lower opening, a lower locking ball is arranged in the lower locking hole in a sliding mode, the outer end of the lower locking ball protrudes out of the lower locking hole and is positioned in the lower opening, a lower locking spring is arranged in the lower locking hole, the lower locking spring abuts against the lower locking ball, and the upper locking ball and the lower locking ball abut against connecting rods at the upper end and the lower end of the joint part respectively, so that the stability of the joint part of the reconstructed bone fracture plate in the clamping groove is improved.
The beneficial effects of the invention are as follows: the bending device for bending and shaping the reconstructed bone plate can realize 360-degree bending of the node part of the reconstructed bone plate relative to the connecting rod, the rod body, the sleeve, the rotating wheel and the node part clamped on the rotating wheel can rotate together by pulling the rod body, the two bending devices are matched in the bending process, so that the reconstructed bone plate is bent, after the reconstructed bone plate is bent for a certain angle, the rotating wheel is unlocked through the locking mechanism, and then the rod body is pulled in the opposite direction to be reset to be convenient for the hand to hold and apply force so as to continuously drive the bending of the node part.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a three-dimensional schematic view of a bending machine for reconstructing bending and shaping of a bone plate according to the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1A;
FIG. 3 is a cross-sectional view of a bender for reconstructing a bending and shaping of a bone plate according to the present invention;
FIG. 4 is an enlarged partial schematic view of B in FIG. 3;
FIG. 5 is an enlarged partial schematic view of C in FIG. 3;
FIG. 6 is a schematic three-dimensional view of one side of the wheel and stop assembly of the present invention;
FIG. 7 is another three-dimensional schematic view of the wheel and stop engagement of the present invention;
FIG. 8 is a schematic cross-sectional view of a rotor of the present invention;
FIG. 9 is a three-dimensional schematic of a stop of the present invention;
FIG. 10 is a three-dimensional schematic of a putter in accordance with the present invention;
FIG. 11 is a three-dimensional schematic view of an actuator rod according to the present invention;
FIG. 12 is a three-dimensional schematic view of a reconstructed bone plate of the present invention;
FIG. 13 is a schematic representation of the use of the bending machine of the present invention for reconstructing bending and shaping of a bone plate;
fig. 14 is a schematic view of a wheel in embodiment 2 of the present invention.
In the figure: 1. 1-1 parts of reconstructed bone fracture plate, 1-2 parts of connecting rod, 1-2 parts of node part, 2 parts of rod body, 2-1 parts of first inner hole, 2-2 parts of second inner hole, 3 parts of sleeve, 3-1 parts of notch, 3-2 parts of barrel bottom, 3-21 parts of lower opening, 3-3 parts of guide rod, 3-4 parts of barrel cover, 3-41 parts of upper opening, 4 parts of rotating wheel, 4-1 parts of clamping groove, 4-11 parts of positioning groove, 4-2 parts of tooth socket, 4-3 parts of arc groove, 5 parts of stopping piece, 5-1 parts of clamping tooth, 5-2 parts of spring hole, 6 parts of push rod, 6-1 parts of protruding part, 7 parts of actuating rod, 7-1 parts of contact surface, 7-2 parts of limiting surface, 8 parts of first spring, 9 parts of second spring, 10 parts of end cover, 11 parts of para-ball, 12 parts of para-position spring, 13 parts of upper locking ball, 14 parts of upper locking spring, 15 parts of lower locking ball, 16 parts of lower locking spring.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only those features which are relevant to the invention, and orientation and reference (e.g., up, down, left, right, etc.) may be used solely to aid in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-6, 9 and 12, a bending machine for bending and shaping a rebuilt bone fracture plate is provided, wherein the rebuilt bone fracture plate 1 comprises a plurality of connecting rods 1-1 and node parts 1-2, the connecting rods 1-1 and the node parts 1-2 are sequentially and alternately connected, the bending machine comprises a rod body 2, a sleeve 3, a rotating wheel 4 and a stop piece 5, the rod body 2 is fixedly connected with the sleeve 3, the rotating wheel 4 is rotationally arranged in the sleeve 3, a clamping groove 4-1 for placing the rebuilt bone fracture plate 1 is formed in the peripheral surface of the rotating wheel 4, a plurality of tooth sockets 4-2 are distributed on the peripheral surface of the rotating wheel 4 along the circumferential direction of the rotating wheel, the stop piece 5 is slidably arranged on the sleeve 3, and a plurality of clamping teeth 5-1 matched with the tooth sockets 4-2 are arranged on one side of the stop piece 5 close to the rotating wheel 4;
the rod body 2 is provided with a locking mechanism for locking or unlocking the rotating wheel 4, the locking mechanism utilizes the elasticity of the elastic element to enable the stop piece 5 to be close to the rotating wheel 4, and enables the latch 5-1 on the stop piece 5 to be meshed with the tooth groove 4-2 on the rotating wheel 4, so that the locking of the rotating wheel 4 is realized, and the locking mechanism can enable the stop piece 5 to be separated relative to the rotating wheel 4 under the action of external force, so that the unlocking of the rotating wheel 4 is realized.
The locking mechanism comprises a push rod 6 and an actuating rod 7, a first inner hole 2-1 and a second inner hole 2-2 communicated with the outside are formed in the rod body 2, the first inner hole 2-1 and the second inner hole 2-2 are mutually intersected and mutually communicated, the push rod 6 is slidably arranged in the first inner hole 2-1, the head end of the push rod 6 extends out of the first inner hole 2-1, the head end of the push rod 6 is fixedly connected with the stop piece 5, the actuating rod 7 is slidably arranged in the second inner hole 2-2, an inclined contact surface 7-1 is formed on the actuating rod 7, and the elastic element comprises a first spring 8 for pushing the push rod 6 to be in contact with the contact surface 7-1 of the actuating rod 7 and a second spring 9 for pushing the actuating rod 7 to abut against the push rod 6;
when no external force acts on the actuating rod 7, the actuating rod 7 props against the push rod 6 under the action of the second spring 9, the first spring 8 is in a compressed state, and the push rod 6 pushes the stop piece 5 to enable the latch 5-1 on the stop piece 5 to be meshed with the tooth slot 4-2 on the rotating wheel 4, so that the locking of the rotating wheel 4 is realized; when the external force pushes the actuating rod 7, the second spring 9 is compressed, and because the push rod 6 is in contact with the inclined contact surface 7-1 of the actuating rod 7, the first spring 8 pushes the push rod 6 to be in contact with the contact surface 7-1 of the actuating rod 7, that is, the push rod 6 drives the stop piece 5 on the push rod to be separated from the rotating wheel 4, so that unlocking of the rotating wheel 4 is realized, when the actuating rod 7 is released by a hand, the actuating rod 7 is reset under the action of the second spring 9, and the push rod 6 pushes the stop piece 5 again, so that the latch 5-1 on the stop piece 5 is meshed with the tooth groove 4-2 on the rotating wheel 4.
The contact surface 7-1 is inclined outwards from top to bottom, when the actuating rod 7 is pushed upwards, the contact surface 7-1 on the actuating rod 7 moves upwards together, a space for outwards moving the push rod 6 is provided, and the push rod 6 is closed towards the actuating rod 7 under the action of the first spring 8, so that unlocking of the rotating wheel 4 is realized.
As shown in fig. 5, 10 and 11, the tail end of the push rod 6 extends outwards to form a protruding portion 6-1, the end face of the protruding portion 6-1, which is close to the actuating rod 7, is matched with the contact surface 7-1 of the actuating rod 7, a limiting surface 7-2 is arranged on the actuating rod 7 and above the contact surface 7-1, the limiting surface 7-2 is arranged above the protruding portion 6-1, and the self-locking of the actuating rod 7 can be achieved by abutting the upper surface of the protruding portion 6-1 on the limiting surface 7-2 of the actuating rod 7, so that the actuating rod 7 is prevented from falling off from the second inner hole 2-2.
The push rod 6 is provided with a step surface, one end part of the first inner hole 2-1, which is close to the stop piece 5, is fixed with an end cover 10, one end of the first spring 8 is abutted against the step surface, and the other end is abutted against the end cover 10.
One end of the second spring 9 abuts against the bottom of the second inner hole 2-2, and the other end abuts against the top end of the actuating rod 7.
The stop piece 5 is provided with a spring hole 5-2, an alignment ball 11 is arranged in the spring hole 5-2 in a sliding manner, one end of the alignment ball 11, which is close to the rotating wheel 4, protrudes outwards from the spring hole 5-2, the alignment ball 11 is matched with a tooth socket 4-2 of the rotating wheel 4, an alignment spring 12 for pushing the alignment ball 11 to the tooth socket 4-2 is arranged in the spring hole 5-2, and when the rotating wheel 4 is in an unlocking state, a click sound is generated when the alignment ball 11 is clamped into one tooth socket 4-2 when the rod body 2 is rotated, so that a clamping groove 4-1 on the stop piece 5 is opposite to the tooth socket 4-2 on the rotating wheel 4, and at the moment, the actuating rod 7 is released, and the stop piece 5 is meshed with the rotating wheel 4 in place.
As shown in fig. 6, 8 and 13, the bottom of the clamping groove 4-1 is provided with a positioning groove 4-11 for positioning the node part 1-2, and when the node part 1-2 is positioned in the positioning groove 4-11, the axis of the connecting rod 1-1 coincides with the axis of the rotating wheel 4; the rotating wheel 4 is cylindrical.
As shown in fig. 2, 4 and 7, a strip-shaped notch 3-1 communicated with the outside is formed in the inner wall of the sleeve 3, the notch 3-1 extends from the upper end face to the lower end face of the sleeve 3, a barrel bottom 3-2 is arranged at the bottom end of the sleeve 3, a guide rod 3-3 is arranged on the barrel bottom 3-2, an arc groove 4-3 is formed in the bottom end face of the rotating wheel 4 along the circumferential direction of the guide rod, the guide rod 3-3 is positioned in the arc groove 4-3, a barrel cover 3-4 is fixed at the upper end of the sleeve 3, an upper opening 3-41 penetrates through the barrel cover 3-4, the upper opening 3-41 extends outwards to the outer circumferential surface of the barrel cover 3-4, a lower opening 3-21 opposite to the upper opening 3-41 is formed in the barrel bottom 3-2, the upper opening 3-41 and the lower opening 3-21 are communicated with the notch 3-1, and the barrel bottom 3-2 and the barrel cover 3-4 are arranged to limit the rotating wheel 4 in the sleeve 3.
An upper locking hole is formed in the upper opening 3-41, an upper locking ball 13 is slidably arranged in the upper locking hole, the outer end of the upper locking ball 13 protrudes out of the upper locking hole and is positioned in the upper opening 3-41, an upper locking spring 14 is arranged in the upper locking hole, the upper locking spring 14 abuts against the upper locking ball 13, a lower locking hole is formed in the lower opening 3-21, a lower locking ball 15 is slidably arranged in the lower locking hole, the outer end of the lower locking ball 15 protrudes out of the lower locking hole and is positioned in the lower opening 3-21, a lower locking spring 16 is arranged in the lower locking hole, the lower locking spring 16 abuts against the lower locking ball 15, and the upper locking ball 13 and the lower locking ball 15 abut against connecting rods 1-1 at the upper end and the lower end of the node part 1-2 respectively, so that the stability of the node part 1-2 of the reconstruction bone plate 1 in the clamping groove 4-1 is improved.
The bending machine for reconstructing bending and shaping of the bone fracture plate has the following working principle:
as shown in fig. 12, the reconstruction bone plate 1 includes a plurality of connecting rods 1-1 and node portions 1-2, the plurality of connecting rods 1-1 and node portions 1-2 are alternately connected in sequence along a straight line direction, the cross section of the connecting rod 1-1 is circular, and the above-mentioned bending machine is directed against the type of reconnection bone plate.
The two bending devices are matched with each other to realize the bending and shaping of the reconstructed bone fracture plate 1;
as shown in fig. 13, when a certain node 1-2 of the rebuilt bone plate 1 needs to be bent, the node 1-2 of the rebuilt bone plate 1 is clamped in a positioning groove 4-11 in a clamping groove 4-1 of a bending device, a connecting rod 1-1 at two ends of the node 1-2 is respectively abutted by an upper locking ball 13 and a lower locking ball 15, then the clamping groove 4-1 of another bending device is matched with the rest of the node 1-2 on the rebuilt bone plate 1, and the node 1-2 of the rebuilt bone plate 1 can be bent relative to the connecting rod 1-1 by holding one bending device with one hand;
when the lever body 2 rotates by a certain angle, the lever body 2 deflects to be not convenient for hand holding to continue rotating and applying force, at this time, the actuating lever 7 is pushed upwards, the second spring 9 is compressed, and because the push rod 6 is in contact with the inclined contact surface 7-1 of the actuating lever 7, the first spring 8 pushes the push rod 6 to be in contact with the contact surface 7-1 of the actuating lever 7, that is, the push rod 6 drives the stop piece 5 on the push rod 6 to be separated from the rotating wheel 4, so that unlocking of the rotating wheel 4 is realized, then the lever body 2 is pulled reversely to reset to be convenient for hand holding and applying force to continue driving bending of the node part 1-2, after the actuating lever 7 is released, the actuating lever 7 is reset under the action of the second spring 9, the push rod 6 pushes the stop piece 5 again, so that the latch 5-1 on the stop piece 5 is meshed with the tooth socket 4-2 on the rotating wheel 4, and the node part 1-2 is driven to rotate relative to another bender continuously through the lever body 2.
Example 2
Example 2 differs from example 1 in that: as shown in fig. 14, the rotating wheel 4 is in a spherical belt shape, the inside of the sleeve 3 is matched with the rotating wheel 4, the spherical belt-shaped rotating wheel 4 is adopted, and the curved surface of the rotating wheel 4 is utilized to universally rotate relative to the sleeve 3, so that the multi-directional bending of the reconstruction bone fracture plate 1 can be realized.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. A bending machine for rebuilding bone fracture plate bending and shaping, rebuilding bone fracture plate (1) include a plurality of connecting rods (1-1) and node (1-2), and a plurality of connecting rods (1-1) and node (1-2) connect in turn alternately, its characterized in that:
the bending machine comprises a rod body (2), a sleeve (3), a rotating wheel (4) and a stopping piece (5), wherein the rod body (2) is fixedly connected with the sleeve (3), the rotating wheel (4) is rotationally arranged in the sleeve (3), a clamping groove (4-1) for placing the reconstruction bone fracture plate (1) is formed in the outer circumferential surface of the rotating wheel (4), a plurality of tooth grooves (4-2) are distributed on the outer circumferential surface of the rotating wheel (4) along the circumferential direction of the rotating wheel, the stopping piece (5) is slidably arranged on the sleeve (3), and a plurality of clamping teeth (5-1) matched with the tooth grooves (4-2) are arranged on one side, close to the rotating wheel (4), of the stopping piece (5);
the locking mechanism is used for locking or unlocking the rotating wheel (4), the locking mechanism utilizes the elasticity of the elastic element to enable the stop piece (5) to be close to the rotating wheel (4), and enables the latch teeth (5-1) on the stop piece (5) to be meshed with the tooth grooves (4-2) on the rotating wheel (4), so that the rotating wheel (4) is locked, and the locking mechanism can enable the stop piece (5) to be separated relative to the rotating wheel (4) under the action of external force, so that the rotating wheel (4) is unlocked;
the locking mechanism comprises a push rod (6) and an actuating rod (7), wherein a first inner hole (2-1) and a second inner hole (2-2) communicated with the outside are formed in the rod body (2), the first inner hole (2-1) and the second inner hole (2-2) are mutually intersected and mutually communicated, the push rod (6) is slidably arranged in the first inner hole (2-1), the first inner hole (2-1) extends outwards from the head end of the push rod (6), the head end of the push rod (6) is fixedly connected with a stop piece (5), the actuating rod (7) is slidably arranged in the second inner hole (2-2), an inclined contact surface (7-1) is formed in the actuating rod (7), and the elastic element comprises a first spring (8) for pushing the push rod (6) to be in contact with the contact surface (7-1) of the actuating rod (7) and a second spring (9) for pushing the actuating rod (7) to abut against the push rod (6);
a positioning groove (4-11) for positioning the node part (1-2) is formed in the bottom of the clamping groove (4-1), and when the node part (1-2) is positioned in the positioning groove (4-11), the axis of the connecting rod (1-1) coincides with the axis of the rotating wheel (4).
2. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
the contact surface (7-1) is inclined outwards from top to bottom.
3. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
the tail end of the push rod (6) outwards extends to form a protruding portion (6-1), the end face of one end, close to the execution rod (7), of the protruding portion (6-1) is matched with the contact face (7-1) of the execution rod (7), a limiting face (7-2) is arranged above the contact face (7-1) on the execution rod (7), and the limiting face (7-2) is located above the protruding portion (6-1).
4. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
the push rod (6) is provided with a step surface, an end cover (10) is fixed at one end part of the first inner hole (2-1) close to the stop piece (5), one end of the first spring (8) is propped against the step surface, and the other end of the first spring is propped against the end cover (10).
5. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
one end of the second spring (9) is propped against the bottom of the second inner hole (2-2), and the other end is propped against the top end part of the actuating rod (7).
6. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
the anti-theft device is characterized in that a spring hole (5-2) is formed in the stop piece (5), an alignment ball (11) is arranged in the spring hole (5-2) in a sliding mode, one end, close to the rotating wheel (4), of the alignment ball (11) protrudes outwards out of the spring hole (5-2), the alignment ball (11) is matched with a tooth groove (4-2) of the rotating wheel (4), and an alignment spring (12) used for pushing the alignment ball (11) to the tooth groove (4-2) is arranged in the spring hole (5-2).
7. The bender for reconstructing a bending and shaping of a bone plate according to claim 1, wherein:
the inner wall of sleeve (3) has seted up bar breach (3-1) with external intercommunication, breach (3-1) extends to the lower extreme terminal surface from the upper end terminal surface of sleeve (3), the bottom of sleeve (3) has barrel head (3-2), be provided with guide bar (3-3) on barrel head (3-2), circular arc groove (4-3) have been seted up along its circumferencial direction to the bottom terminal surface of runner (4), guide bar (3-3) are arranged in circular arc groove (4-3), the upper end of sleeve (3) is fixed with cover (3-4), it has upper opening (3-41) to run through on cover (3-4), upper opening (3-41) outwards extends to the outer peripheral face of cover (3-4), lower opening (3-21) just to upper opening (3-41) are seted up on barrel head (3-2), upper opening (3-41) and lower opening (3-21) all communicate with breach (3-1).
8. The bender for reconstructing a bending and shaping of a bone plate according to claim 7, wherein:
an upper locking hole is formed in the upper opening (3-41), an upper locking ball (13) is slidably arranged in the upper locking hole, the outer end of the upper locking ball (13) protrudes out of the upper locking hole and is located in the upper opening (3-41), an upper locking spring (14) is arranged in the upper locking hole, the upper locking spring (14) abuts against the upper locking ball (13), a lower locking hole is formed in the lower opening (3-21), a lower locking ball (15) is slidably arranged in the lower locking hole, the outer end of the lower locking ball (15) protrudes out of the lower locking hole and is located in the lower opening (3-21), a lower locking spring (16) is arranged in the lower locking hole, and the lower locking spring (16) abuts against the lower locking ball (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229134.9A CN108435849B (en) | 2018-03-20 | 2018-03-20 | Bending device for rebuilding bending shaping of bone fracture plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229134.9A CN108435849B (en) | 2018-03-20 | 2018-03-20 | Bending device for rebuilding bending shaping of bone fracture plate |
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| CN108435849A CN108435849A (en) | 2018-08-24 |
| CN108435849B true CN108435849B (en) | 2023-12-22 |
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