阅读说明：本技术 盆骨骨折外固定架 (External fixing frame for pelvic fracture ) 是由 陈晓斌 张建政 孙天胜 刘智 于 2019-11-28 设计创作，主要内容包括：本发明公开了一种盆骨骨折外固定架,包括：螺杆；两套筒,其两套筒均滑动套装在螺杆上,每个套筒两端均通过与螺杆匹配的螺母固定,其中一个套筒外壁垂直固接有第一连杆,第一连杆末端设有第一旋转部,第一旋转部以平行于螺杆的中心轴为中心旋转及固定,骨针可拆卸地固接在第一旋转部末端,且骨针垂直于螺杆,另一个套筒外壁垂直固接有第二连杆,第二连杆末端设有第二旋转部,第二旋转部以垂直于螺杆的中心轴为中心旋转及固定,骨针可拆卸地固接在第二旋转部末端。本发明同一种规格的固定支架适用范围广,操作方便。(The invention discloses an external fixing frame for pelvic fracture, comprising: a screw; two sleeves, its two sleeves all slip the suit on the screw rod, every sleeve both ends are all fixed through the nut that matches with the screw rod, the perpendicular rigid coupling of one of them sleeve outer wall has first connecting rod, first connecting rod end is equipped with first rotating part, first rotating part uses the center pin that is on a parallel with the screw rod as the center rotation and fixed, spicule detachably rigid coupling is terminal at first rotating part, and spicule perpendicular to screw rod, the perpendicular rigid coupling of another sleeve outer wall has the second connecting rod, the second connecting rod end is equipped with the second rotating part, the second rotating part uses the center pin of perpendicular to screw rod as the center rotation and fixed, spicule detachably rigid coupling is terminal at the second rotating part. The fixing support of the same specification has wide application range and convenient operation.)

1. Pelvis fracture external fixation frame, its characterized in that includes:

a screw;

two sleeves, its two equal slip suits of sleeve are in on the screw rod, every sleeve both ends all through with the nut that the screw rod matches is fixed, and the perpendicular rigid coupling of one of them sleeve outer wall has first connecting rod, first connecting rod end is equipped with first rotating part, first rotating part is with being on a parallel with the center pin of screw rod is rotatory and fixed as the center, and spicule detachably rigid coupling is in first rotating part is terminal, and spicule perpendicular to the screw rod, the perpendicular rigid coupling of another sleeve outer wall have the second connecting rod, the second connecting rod end is equipped with the second rotating part, the second rotating part is with the perpendicular to the center pin of screw rod is rotatory and fixed as the center, and spicule detachably rigid coupling is in the second rotating part is terminal.

2. The external fixator for pelvic fracture according to claim 1, wherein the first connecting rod is a square rod, one end of which is fixedly connected to the outer wall of the sleeve, and the other end of which is provided with a screw hole which penetrates the opposite wall surface and is parallel to the screw rod;

the first rotating part includes:

one end of the square rod is provided with a second screw hole opposite to the screw hole, and the diameter of the second screw hole is the same as that of the screw hole;

and the bolt is matched with the screw hole and the second screw hole so as to fix the first connecting rod and the square rod.

3. The external fixator for pelvic fracture according to claim 2, wherein the other end of the square bar is provided with a bone pin hole penetrating through the opposite wall surface and perpendicular to the screw rod, the diameter of the bone pin hole is equal to or larger than that of the bone pin, a fixing screw hole penetrates through an outer side wall of the bone pin hole, and a fixing bolt is connected in the fixing screw hole so that the bone pin can be fixed in the bone pin hole.

4. The external fixator for pelvic fracture according to claim 1, wherein one end of the second connecting rod is fixedly connected with the outer wall of the sleeve in a perpendicular manner, and the end face of the tail end of the second connecting rod is provided with a cavity which is axially recessed inwards and is internally provided with internal threads;

the second rotating portion includes:

the thread of the second bolt is matched with the internal thread of the cavity, so that the second bolt is screwed and fixed with the tail end of the second connecting rod;

and the fixing block is provided with a through hole which vertically penetrates through the opposite wall surface, and the diameter of the through hole is smaller than the head of the second bolt and the maximum width of the tail end of the second connecting rod, so that the fixing block can be slidably sleeved on the second bolt.

5. The external fixator for pelvic fracture according to claim 4, wherein the fixing block has a second bone pin hole penetrating through the fixing block and perpendicular to the through hole, the diameter of the second bone pin hole is equal to or greater than that of the bone pin, a second fixing screw hole penetrates through an outer side wall of the second bone pin hole, and a second fixing bolt is connected in the second fixing screw hole so that the bone pin can be fixed in the second bone pin hole.

6. The external fixator for pelvic fracture according to claim 1, wherein the screws are composed of a plurality of connecting screws with ends screwed and fixed to each other in sequence, and each connecting screw is identical;

one end of the connecting screw rod is provided with a second cavity which is inwards sunken along the axial direction, and an internal thread is arranged in the second cavity;

the end face of the other end of the connecting screw is fixedly connected with a second screw, the second screw is matched with the second cavity, the connecting screw is close to the fixedly connected end of the second screw, the periphery of one end of the second screw is smooth, and the length of the smooth section of the connecting screw is the same as the axial length of the internal thread of the nut.

Technical Field

The invention relates to the technical field of orthopedic medical instruments. More particularly, the present invention relates to an external fixator for pelvic fracture.

Background

When the pelvis is fractured, for example, when the fracture gap of the pelvis is too large, manual reduction is difficult and not fine enough, and the pelvis fracture external fixing frame can be used for fixing.

When the pelvis is fractured, for example, when the fracture gap of the pelvis is too large, manual reduction is difficult and not fine enough, and the pelvis fracture external fixing frame can be used for fixing.

The current pelvis external fixation support that can multi-angle modulation and same multi-purpose freedom of specification is adjusted, and it includes that 3 at least adjustable length adjust pole, two lockable universal joints, two lockable universal balls, two extension rods and two spicules, and wherein, every is adjusted the pole including being equipped with internal screw-threaded sleeve and threaded rod, sleeve and threaded rod threaded connection. The pole is divided into length adjustment pole and both sides regulation pole, connect into a rectangle that only has the trilateral between length adjustment pole and the both sides regulation pole, is connected through the lockable universal joint between length adjustment pole and the both sides regulation pole, and the one end that length adjustment pole was kept away from to the both sides regulation pole is connected with the extension rod through the lockable universal ball respectively, and every extension rod passes through a fixed spicule of clamp splice, wherein according to patient's needs, the quantity of pole is adjusted to multiplicable length adjustment pole and both sides. During the use, loosen universal joint and universal bulb earlier, fix after pelvic bone fracture department when spicule one end, the other end passes through the clamp splice to be fixed on the extension rod, according to the length of adjustable rod, rotate adjusting sleeve, so that the adjusting screw of both sides stretches out or contracts, thereby make the adjustable rod extension or shorten, when adjusting to required length, the stall adjusts sleeve, later according to required opening size, adjust the orientation and the locking of universal joint and universal bulb structure, to this end, the regulation finishes, the length adjustment pole can exert required tension to the spicule.

Since the adjustment rods all have the shortest length, the increase in the length of the adjustment rods is not highly adaptable to patients with minor case differences; in order to be suitable for different patients, the number of the adjusting rods needs to be increased or reduced manually, when the number of the adjusting rods is large, the adjusting rods need to be adjusted one by one when the device is installed, and the operation is complex.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide an external fixing frame for pelvic fracture, which has wide application range and convenient operation of fixing frames of the same specification.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an external fixator for pelvic fracture, including:

a screw;

two sleeves, its two equal slip suits of sleeve are in on the screw rod, every sleeve both ends all through with the nut that the screw rod matches is fixed, and the perpendicular rigid coupling of one of them sleeve outer wall has first connecting rod, first connecting rod end is equipped with first rotating part, first rotating part is with being on a parallel with the center pin of screw rod is rotatory and fixed as the center, and spicule detachably rigid coupling is in first rotating part is terminal, and spicule perpendicular to the screw rod, the perpendicular rigid coupling of another sleeve outer wall have the second connecting rod, the second connecting rod end is equipped with the second rotating part, the second rotating part is with the perpendicular to the center pin of screw rod is rotatory and fixed as the center, and spicule detachably rigid coupling is in the second rotating part is terminal.

Preferably, the first connecting rod is a square rod, one end of the first connecting rod is fixedly connected with the outer wall of the sleeve in a vertical mode, and the other end of the first connecting rod is provided with a screw hole which penetrates through the opposite wall surface and is parallel to the screw rod;

the first rotating part includes:

one end of the square rod is provided with a second screw hole opposite to the screw hole, and the diameter of the second screw hole is the same as that of the screw hole;

and the bolt is matched with the screw hole and the second screw hole so as to fix the first connecting rod and the square rod.

Preferably, the square pole other end is equipped with and runs through relative wall and perpendicular to the bone pinhole of screw rod, bone pinhole diameter equals or is greater than the bone needle diameter, a bone pinhole lateral wall runs through and is equipped with fixed screw, fixed screw in-connection has fixing bolt, so that the bone needle can be fixed in the bone pinhole.

Preferably, one end of the second connecting rod is fixedly connected with the outer wall of the sleeve in a vertical mode, the end face of the tail end of the second connecting rod is provided with a cavity which is recessed inwards in the axial direction, and internal threads are arranged in the cavity;

the second rotating portion includes:

the thread of the second bolt is matched with the internal thread of the cavity, so that the second bolt is screwed and fixed with the tail end of the second connecting rod;

and the fixing block is provided with a through hole which vertically penetrates through the opposite wall surface, and the diameter of the through hole is smaller than the head of the second bolt and the maximum width of the tail end of the second connecting rod, so that the fixing block can be slidably sleeved on the second bolt.

Preferably, be equipped with on the fixed block run through and with perforation vertically second bone pinhole, second bone pinhole diameter equals or is greater than the spicule diameter, a second bone pinhole lateral wall runs through and is equipped with the fixed screw of second, second fixed screw in-connection has second fixing bolt, so that the spicule can be fixed the second bone pinhole is downthehole.

Preferably, the screw rod is composed of a plurality of connecting screw rods with the end parts being sequentially and mutually screwed and fixedly connected, and each connecting screw rod is completely the same;

one end of the connecting screw rod is provided with a second cavity which is inwards sunken along the axial direction, and an internal thread is arranged in the second cavity;

the end face of the other end of the connecting screw is fixedly connected with a second screw, the second screw is matched with the second cavity, the connecting screw is close to the fixedly connected end of the second screw, the periphery of one end of the second screw is smooth, and the length of the smooth section of the connecting screw is the same as the axial length of the internal thread of the nut.

The invention at least comprises the following beneficial effects:

firstly, the two sleeves are pushed to slide on the screw rod by adjusting nuts at two ends of the two sleeves so as to drive a first connecting rod and a second connecting rod which are fixedly connected on the two sleeves to move, the first connecting rod drives a first rotating part connected with the first connecting rod to move, the second connecting rod drives a second rotating part connected with the second connecting rod to move, and the first rotating part and the second rotating part respectively drive spicules fixed on the first rotating part and the second rotating part to move, so that the aim of adjusting the distance between the spicules is fulfilled. The distance between the spicules is adjusted by adjusting the position of the nut on the screw rod, so that the force is more uniform, and the operation is convenient.

And secondly, the screw is composed of a plurality of connecting screws with the end parts which are sequentially screwed and fixedly connected with each other, when the length of the screw is adjusted for different patients, the screw can be directly screwed on the screw or the connecting screw with the required length is reduced, the length of the screw is simply and conveniently adjusted, and the fixed support with the same specification has wide application range.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural view of an external fixator for pelvic fracture according to one embodiment of the present invention;

FIG. 2 is a schematic structural view of a portion of an external pelvic fracture fixation frame with a first rotating portion according to one embodiment of the present invention;

FIG. 3 is a schematic structural view of a portion of the external pelvic fracture fixation frame with a second rotating portion according to one embodiment of the present invention;

fig. 4 is a schematic structural diagram of a connecting screw rod according to one embodiment of the present invention.

Reference numerals: screw rod 1, sleeve 2, nut 3, first connecting rod 4, first rotating part 5, second connecting rod 6, second rotating part 7, screw 8, square bar 9, second screw 10, bolt 11, bone pinhole 12, fixed screw 13, fixing bolt 14, cavity 15, second bolt 16, fixed block 17, perforation 18, second bone pinhole 19, second fixed screw 20, second fixing bolt 21, connecting screw 22, second cavity 23, second screw 24.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 4, the present invention provides an external fixator for pelvic fracture, comprising:

a screw 1;

two sleeves 2, its two sleeves 2 equal slip suit are in on the screw rod 1, 2 both ends of every sleeve all through with nut 3 that 1 matches of screw rod is fixed, and the perpendicular rigid coupling of 2 outer walls of one of them sleeve has first connecting rod 4, the end of first connecting rod 4 is equipped with first rotating part 5, first rotating part 5 with be on a parallel with the center pin of screw rod 1 is rotatory and fixed as the center, and spicule detachably rigid coupling is in 5 end of first rotating part, and spicule perpendicular to the perpendicular rigid coupling of screw rod 1, the perpendicular rigid coupling of another 2 outer walls of sleeve have second connecting rod 6, 6 ends of second connecting rod are equipped with second rotating part 7, second rotating part 7 is with the perpendicular to the center pin of screw rod 1 is rotatory and fixed as the center, and spicule detachably rigid coupling is in 7 ends of second rotating part.

In the above technical solution, as shown in fig. 1, a screw 1 is slidably sleeved with two sleeves 2, two ends of each sleeve 2 are fixed by nuts 3 screwed with the screw 1, a first connecting rod 4 is vertically and fixedly connected to an outer wall of one sleeve 2, a second connecting rod 6 is vertically and fixedly connected to an outer wall of the other sleeve 2, a first rotating part 5 is connected to a terminal of the first connecting rod 4, the first rotating part 5 rotates around a terminal of the first connecting rod 4 by taking a central axis parallel to the screw 1 as a center to adjust a height of the sleeve 2, after the height is adjusted, the first rotating part 5 is fixed to the first connecting rod 4, a second rotating part 7 is connected to a terminal of the second connecting rod 6, the second rotating part 7 rotates around the second connecting rod 6 by taking a central axis perpendicular to the screw 1 as a center to adjust a position of the sleeve 2 on the second connecting rod 6, the two sleeves 2 are positioned on the same straight line by adjusting the first rotating part 5 and the second, so that the screw rod 1 can be sleeved in the two sleeves 2. When the external fixing bracket is used, one spicule is fixed at the tail end of the first rotating part 5 and is perpendicular to the screw rod 1, and the other spicule is fixed at the tail end of the second rotating part 7.

In the use process, when the fixing support is installed, one spicule is fixed at the tail end of the first rotating part 5, the other spicule is fixed at the tail end of the second rotating part 7, the two sleeves 2 are positioned on the same straight line by adjusting the first rotating part 5 and the second rotating part 7, then the screw rod 1 is sleeved into the two sleeves 2, the sleeves 2 are fixed by the nuts 3, and the sleeves 2 are fixed by the nuts 3, wherein the two ends of the sleeves 2 are screwed on the screw rod 1. When the distance between spicules on two sides of a pelvis is required to be reduced to treat the pelvis, the position of the sleeve 2 on one side of the screw rod 1 is adjusted firstly, the nut 3, close to the other end of the sleeve 2, of the sleeve 2 is moved to a distance away from the sleeve 2, then the nut 3, far away from the sleeve 2, of the sleeve 2 is moved to the end part of the sleeve 2 after the sleeve 2 is driven to move to the required position by moving the nut 3 at the other end of the sleeve 2, the sleeve 2 is fixed, and then the sleeve 2 on the other side is adjusted by using the same steps. Adopt this kind of technical scheme, the nut 3 through adjusting two 2 both ends of sleeve promotes two sleeves 2 and slides on screw rod 1 to drive first connecting rod 4 and the second connecting rod 6 of rigid coupling on two sleeves 2 and remove, first connecting rod 4 drives the first rotating part 5 removal rather than being connected, second connecting rod 6 drives the second rotating part 7 removal rather than being connected, first rotating part 5 and second rotating part 7 drive the spicule removal of fixing on it respectively, thereby reach the purpose of adjusting distance between the spicule. The distance between the spicules is adjusted by adjusting the position of the nut 3 on the screw rod 1, the force is more uniform, and the operation is convenient.

In another technical solution, as shown in fig. 2, the first connecting rod 4 is a square rod, one end of which is fixedly connected to the outer wall of the sleeve 2, and the other end of which is provided with a screw hole 8 penetrating through the opposite wall surface and parallel to the screw rod 1; the first rotating portion 5 includes: one end of the square rod 9 is provided with a second screw hole 10 opposite to the screw hole 8, and the diameter of the second screw hole 10 is the same as that of the screw hole 8; and the bolt 11 is matched with the screw hole 8 and the second screw hole 10 so as to fix the first connecting rod 4 and the square rod 9. When the bracket is installed by adopting the scheme, firstly, the bolt 11 is loosened, then the sleeve 2 is adjusted to the required height, and then the first connecting rod 4 and the square rod 9 are fixed through the bolt 11.

In another kind of technical scheme, the square bar 9 other end is equipped with and runs through relative wall and perpendicular to the bone pinhole 12 of screw rod 1, bone pinhole 12 diameter equals or is greater than the spicule diameter, a lateral wall of bone pinhole 12 runs through and is equipped with fixed screw 13, fixed screw 13 in-connection has fixing bolt 14, so that the spicule can be fixed in bone pinhole 12. After the bone needle is sleeved in the bone needle hole 12 according to the scheme, the fixing bolt 14 on the fixing screw hole 13 is screwed, so that the fixing bolt 14 is abutted against the bone needle, and the bone needle is fixed.

In another technical scheme, as shown in fig. 3, one end of the second connecting rod 6 is fixedly connected with the outer wall of the sleeve 2 vertically, an axial inward-recessed cavity 15 is formed in the end face of the tail end of the second connecting rod, and internal threads are formed in the cavity 15; the second rotating portion 7 includes: a second bolt 16, the thread of which is matched with the internal thread of the cavity 15, so that the second bolt 16 is screwed and fixed with the tail end of the second connecting rod 6; and the fixed block 17 is provided with a through hole 18 vertically penetrating through the opposite wall surface, and the diameter of the through hole 18 is smaller than the maximum width of the head of the second bolt 16 and the tail end of the second connecting rod 6, so that the fixed block 17 can be slidably sleeved on the second bolt 16.

By adopting the scheme, the fixing block 17 is sleeved on the second bolt 16 in a sliding manner, the second connecting rod 6 and the second bolt 16 can rotate relative to the fixing block 17 after the second bolt 16 is unscrewed, the second connecting rod 6 and the second bolt 16 stop rotating after the sleeve 2 on the second connecting rod 6 and the sleeve 2 on the first connecting rod 4 are in the same straight line, and the second bolt 16 and the second connecting rod 6 are screwed and fixed, so that the screw 1 is convenient to mount.

In another kind of technical scheme, be equipped with on the fixed block 17 run through and with perforation 18 vertically second bone pinhole 19, 19 diameters of second bone pinhole are equal to or greater than the spicule diameter, 19 a lateral wall of second bone pinhole runs through and is equipped with the fixed screw hole of second 20, the fixed screw hole of second 20 in-connection has second fixing bolt 21, so that the spicule can be fixed in the second bone pinhole 19. After the bone pin is fitted into the second bone pin hole 19 in this way, the second fixing bolt 21 is screwed into the second fixing screw hole 20, and the second fixing bolt 21 is pressed against the bone pin, thereby fixing the bone pin.

In another technical solution, as shown in fig. 1 and 4, the screw 1 is composed of a plurality of connecting screws with end portions screwed and fixed to each other in turn, and each connecting screw 22 is identical; one end of the connecting screw rod 22 is provided with a second cavity 23 which is recessed inwards along the axial direction, and an internal thread is arranged in the second cavity 23; a second screw 24 is fixedly connected to the end face of the other end of the connecting screw 22, the second screw 24 is matched with the second cavity 23, the connecting screw 22 is fixedly connected to the outer periphery of one end of the second screw 24, and the length of the smooth section of the connecting screw 22 is the same as the axial length of the internal thread of the nut 3.

In the above technical solution, one end of each connecting screw 22 is provided with a second cavity 23, an internal thread is arranged in the second cavity 23, and the other end of each connecting screw 22 is provided with a second screw 24, wherein the end of each connecting screw 22 provided with the second cavity 23 is coaxially and threadedly connected with the end of the other connecting screw 22 provided with the second screw 24. And the periphery of the end of each connecting screw 22 provided with the second screw 24 is smooth, and the length of the smooth section of the connecting screw 22 is the same as the axial length of the internal thread of the nut 3, for example, the position of the smooth section of the invention can also be arranged at the end of the connecting screw 22 provided with the second cavity 23.

In the use process, the connecting screw rods 22 with required lengths can be connected in sequence according to needs, when the distance between the spicules is adjusted by rotating the nut 3, one hand holds the screw rod 1 to be close to one end of the sleeve 2 to be adjusted and exerts force in the direction that the connecting screw rods 22 are screwed with each other, the other hand rotates the nut 3 to drive the sleeve 2 to move, wherein when the force exerting directions of the two hands are opposite, the force used for holding the end of the screw rod 1 is larger than the force used for rotating the nut 3, and therefore the screw rod 1 is prevented from loosening. By adopting the scheme, after the connecting screw 22 is connected, because the length of the smooth section of the connecting screw 22 is the same as the axial length of the internal thread of the nut 3, when one part of the internal thread of the nut 3 is positioned in the smooth section of the connecting screw 22, the process of rotating the nut 3 to push the sleeve 2 to move cannot be influenced, when the internal thread of the nut 3 is completely positioned in the smooth section of the connecting screw 22, the nut 3 can be rotated to find the starting point of thread screwing with the next connecting screw 22 on the premise of no movement, and when the nut 3 finds the starting point of thread screwing with the next connecting rod, the sleeve 2 is continuously driven to move by rotating the nut 3. According to the invention, when the length of the screw rod 1 needs to be adjusted for different patients, the connecting screw rod 22 with the required length is directly screwed on the screw rod 1 or reduced, the length of the screw rod 1 is simply and conveniently adjusted, and the fixed support with the same specification has a wide application range.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The application, modification and variation of the external fixator for pelvic fracture of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.