CN115317108A - External fixation frame assembly for traction restoration - Google Patents

Abstract

The invention discloses a traction resetting external fixing frame assembly which comprises a main rod, fixing nails and a traction adjusting mechanism, wherein the main rod is provided with an end cylindrical groove, a traction seat is installed in the end cylindrical groove, an end screw of the traction seat is sleeved in the end cylindrical groove, a flat hole is vertically formed in the middle of the traction seat, shaft holes are formed in two side walls of the flat hole, two rotating shafts of a self-adaptive turning block are sleeved in the shaft holes in the two side walls of the flat hole in a matching mode, a central through hole penetrates through the middle of the self-adaptive turning block in the vertical direction, an auxiliary adjusting nail is sleeved in the central through hole, the traction resetting external fixing frame assembly further comprises a transverse turning matching sliding seat, a rear arc hole is formed in the middle of the self-adaptive turning block and is sleeved with a fixing ring in a matching mode, a rear support is fixed at the outer end of the traction seat, a longitudinal turning matching locking rod is sleeved in the rear end of the longitudinal turning matching locking rod, and the longitudinal turning matching locking rod is sleeved on the outer side of the auxiliary adjusting nail. The components of the invention are mutually matched, and the corresponding assembly sequence and the adjusting structure are installed, so that the function of fixing the external fixing frame under the condition of traction restoration can be realized.

Description

External fixing frame assembly for traction restoration

Technical Field

The invention belongs to the technical field of fracture external fixation frames, and particularly relates to an external fixation frame assembly with traction reduction.

Background

The external fixing bracket for fracture is mainly an instrument for fixing fracture and positioned outside the limb body and is mainly formed by connecting an external fixing screw with an external fixing bracket rod. The external fixing bracket is mainly used for treating various open fracture injuries with serious limb injuries, maintains the stability and position of fracture as much as possible and reduces the fracture dislocation risk. In the case of fracture pulverization or infection, the external fixation is performed, and then the upper and lower ends of the fracture are fixed. The guide pin fixation is coupled with an external fixator and then adjusted to a certain extent, in this case for comminuted fractures or in cases where internal fixation is not appropriate, and to facilitate fracture healing.

The function of the external fixing frame for fracture is to actually play a role in supporting and fixing. Some patients have no way to perform surgical treatment immediately after fracture due to physical reasons or due to the degree of open contamination of the skin and soft tissues at the fracture site, and no way to perform internal fixation treatment, so that only external fixation stent treatment can be used. The external fixing bracket does not cross the broken end of the fracture and is far away from the fracture part, so that the safety of the tissue is relatively better, the infection after the fracture caused by the pollution of the broken end is avoided, and even the formation of osteomyelitis can be avoided. Therefore, the external fracture fixation frame is very important in the treatment of fracture.

When current outrigger is fixed to two sections of fracture, need two at least staple can guarantee the fixed back of outrigger in every section, the fracture two sections can not appear the swing, rotation and the flexible removal of axial, but during the actual operation, fix two frame holes of inboard earlier, then fix two frame holes in the outside, because two frame holes in inboard can the free choice fixed position when being fixed, it is easy to fix, but when two frame holes in the outside fix, can appear the hole site occasionally and issue to blood vessel or nerve, can't directly lower the nail, lead to the fixed difficulty of outrigger, need punch fixed problem again even.

And current external fixation frame generally adopts the preparation of stereoplasm cylindrical metal pole, forms comparatively stable firm support body through fixed combination such as connecting fastener when using, and the location of supplementary fracture position is resumeed. There is certain problem in current external fixator when using at that time, and the human body has tissues such as a large amount of blood vessels and nerve, in order to avoid inserting the staple damage blood vessel or nerve tissue in the broken bone, need bend hard metal member, or avoid blood vessel or nerve tissue through deflection connection fastener.

The commonly used metal rod of the outer frame is quite firm, time-consuming and labor-consuming in bending and difficult in positioning, the connecting fastener deflects to avoid the blood vessel easily, but the locking and the fixing are difficult.

The existing external fixation frame for fracture generally does not have a traction reduction function, when the external fixation frame is installed, the external fixation frame can be drilled and installed only after traction reduction is realized by means of a large and complex traction instrument, the operation is troublesome, the number of devices needs to be increased, and the operation difficulty is high.

Disclosure of Invention

Aiming at the problems that the existing external fracture fixation frame generally does not have the traction reduction function and is inconvenient to use, the invention provides a traction reduction external fixation frame component, which has the traction reduction function when the external fracture fixation frame is installed, and aims to simplify the operation difficulty.

The scheme adopted by the invention for solving the technical problem is as follows: a traction reset external fixation frame assembly comprises a main rod, a series of fixation nails are fixed on the main rod, and the traction reset external fixation frame assembly also comprises a traction regulation mechanism, the traction regulation mechanism comprises a traction seat, a self-adaptive turning block, a matching slide seat and a fixing ring, the end part of the main rod is provided with a end cylindrical groove, one end cylindrical groove is provided with the traction seat, the traction seat comprises an end screw rod, the outer side of the end screw rod is sleeved with a traction screw sleeve, the end screw rod is sleeved in the end cylindrical groove to keep the traction screw sleeve positioned at the outer side of the end part of the main rod, the middle part of the traction seat is vertically provided with a flat hole, shaft holes are arranged on two side walls of the flat hole, two symmetrical rotating shafts are arranged on two sides of the self-adaptive turning block, the two rotating shafts are sleeved in shaft holes on two side walls of the flat hole, the middle part of the self-adaptive turning block is vertically penetrated with a central through hole, and the upper end of an auxiliary regulation nail is provided with a thread section, the lower end is provided with a self-tapping screw section, the thread section of the auxiliary adjusting nail is sleeved in the central through hole, the upper side and the lower side of the through hole are respectively provided with a height adjusting upper screw sleeve and a height adjusting lower screw sleeve, the auxiliary adjusting nail further comprises a transverse turning matching slide seat sleeved on the outer side of the auxiliary adjusting nail, the transverse turning matching slide seat is provided with a rear arc-shaped hole and is matched and sleeved with a fixing ring, the fixing ring is fixed on an outer bracket or an operation bed frame, a locking screw is arranged between the fixing ring and the transverse turning matching slide seat, the outer end of the traction seat is fixed with a rear support, the rear support seat is transversely provided with a transverse through hole, the transverse through hole is sleeved in the transverse turning matching slide seat and is provided with a longitudinal turning matching locking rod, the two ends of the longitudinal turning matching locking rod are respectively provided with an outer pressing screw sleeve and an inner pressing screw sleeve, the inner end of the longitudinal turning matching locking rod is provided with a matching locking hole, and the inner diameter of the matching locking hole is slightly larger than the outer diameter of the auxiliary adjusting nail, and the matched locking hole is sleeved outside the auxiliary adjusting nail.

The two ends of the main rod are respectively provided with an end cylindrical groove, an end plug is sleeved in each end cylindrical groove, a penetrating plug through hole is arranged on the end plug main body along the radial direction, and the fixing nail penetrates and is sleeved in the plug through hole.

There is the flat hole at the middle part of drawing the seat along vertical, and has the shaft hole at flat hole both sides wall, is fixed with the back support in the outer end of drawing the seat, is equipped with the cross bore along transversely on the back support, and there is the tip screw rod at the traction seat front end.

The middle part of the transverse turning matching sliding seat is vertically provided with a through hole, the auxiliary adjusting nail is sleeved in the through hole of the transverse turning matching sliding seat, the transverse turning matching sliding seat is provided with a rear arc hole and is sleeved with a fixing ring in a matching manner, the fixing ring is fixed on an outer bracket or an operation bed frame, and a locking wire is arranged between the fixing ring and the transverse turning matching sliding seat.

Each fixing nail comprises a self-tapping thread section at the lower end and a thread section at the upper end, the self-tapping thread section at the lower end of each fixing nail is used for being screwed into a bone at a corresponding part, and the thread sections at the upper end are respectively fixed together with the corresponding main rod through holes.

In the end cylindrical grooves at the two ends of the main rod, two end plugs are firstly sleeved respectively, wherein the center of the outer end of the rod body of one end plug at the near end is provided with a plug end cylindrical groove, the traction adjusting mechanism is sleeved with the end plug at the near end, and particularly, an end screw of the traction adjusting mechanism is sleeved in the near end plug end cylindrical groove in a matching manner.

The main rod is arranged across the two sides of the fracture butt joint seam, namely, two fixing nail through holes on the main rod are respectively positioned on the two sides of the fracture butt joint seam.

Installation of a first fixing nail A: after the first fixing nail A firstly penetrates through the far-end fixing nail through hole, the self-tapping screw at the lower end of the fixing nail A is screwed into the far-end bone, and the thread section at the upper end of the fixing nail A is screwed into the thread in the main rod fixing nail through hole, so that the fixing nail A and the main rod far-end fixing hole are fixed into a whole. Then the traction adjusting mechanism is in butt joint with the near end of the main rod, namely, the end screw is inserted into the end cylindrical groove at the near end of the main rod, and the traction threaded sleeve is sleeved on the outer side of the end screw.

And (3) installing a second fixing nail B: and respectively penetrating second fixing nails B (namely auxiliary adjusting nails) into the through holes of the transverse turning matching sliding seat, and simultaneously penetrating the fixing nails B into the central through holes of the self-adaptive turning blocks. And screwing the lower self-tapping thread section of the fixing nail B into the near-end bone, and ensuring that the upper side and the lower side of the central through hole are respectively provided with a height adjusting upper thread sleeve and a height adjusting lower thread sleeve.

Traction adjustment: the traction screw sleeve is screwed to press the near end of the main rod, so that the traction seat and the main rod are far away from each other, namely the fixing nail A and the fixing nail B are far away from each other, and the traction purpose is realized.

Resetting, adjusting and positioning: the main rod is adjusted in any one of up-and-down translation, upward swinging, left-and-right translation and left-and-right swinging or combined adjustment through a manual or translation driving instrument, so that after two ends of the fracture are butted, the transversely-turned matching sliding seat and the fixing ring are fixed together through the locking wire, the externally-pressed swivel nut and the internally-pressed swivel nut which are longitudinally turned and matched with two ends of the locking rod are respectively pressed and fixed on the rear support, and finally the externally-pressed swivel nut and the internally-pressed swivel nut which are longitudinally turned and matched with two ends of the locking rod are reversely screwed and pulled to enable two ends of the fracture to be butted.

And (3) mounting a third fixing nail C: the fixing nail C is sleeved in the near-end fixing hole of the main rod in a penetrating manner, the self-tapping screw section at the lower end of the fixing nail C is screwed into the near-end bone, and the screw section at the upper end of the fixing nail C is fixedly connected with the screw thread in the near-end fixing hole of the main rod.

Installation of a fourth staple D: an end plug is inserted into an end cylindrical groove at the far end of the main rod, a penetrating plug through hole is arranged on a main body of the end plug along the radial direction, a fixing nail D penetrates and is sleeved in the plug through hole, a self-tapping thread section at the lower end of the fixing nail D is screwed into far-end bone, and a thread section at the upper end of the fixing nail D is screwed into threads on the inner wall of the plug through hole for fixing.

And (3) installing a fifth fixing nail E: and (3) detaching the traction adjusting mechanism from the near end of the main rod, namely screwing the fixing nail B out of the bone, and pulling out the end screw of the traction seat from the end cylindrical groove of the near end. Inserting the other end plug into the end cylindrical groove at the near end of the main rod, wherein a through plug through hole is arranged on the main body of the end plug along the radial direction, a fixing nail E is sleeved in the through plug through hole in a penetrating manner, a self-tapping thread section at the lower end of the fixing nail E is screwed into a far-end bone, and a thread section at the upper end of the fixing nail E is screwed into a thread on the inner wall of the through hole of the plug for fixing. The screw-in position of the staple E may be the same position as the staple B, or may be different.

After the integral assembly, the main rod, the fixing nail A, the fixing nail C, the fixing nail D and the fixing nail E are reserved, and the traction adjusting mechanism is detached.

The invention has the beneficial effects that: the components of the invention are mutually matched, and the corresponding assembly sequence and the adjusting structure are installed, so that the function of fixing the external fixing frame under the condition of traction restoration can be realized.

When the assembly is used, the main rod firstly spans two sides of the fracture butt joint, namely two fixing nail through holes on the main rod 1 are respectively positioned at two sides of the fracture butt joint. Then the fixing nails A, B, C, D and E are installed in sequence, the self-tapping thread section at the lower end of each fixing nail is screwed into the far-end bone, the thread section at the upper end of each fixing nail is screwed into the thread on the inner wall of the through hole of the main rod or the plug and fixed, so that the lower end of each fixing nail is fixedly connected with the bone, and the upper end of each fixing nail is fixedly connected with the main rod or the plug, thereby forming a stable structure.

The invention can also easily adjust the positions of the two end plugs at the two sides close to the outer end, thereby respectively controlling the nailing positions of the fixing nail D and the fixing nail E, namely the nailing positions of the two outermost nails which are suitable for rotating. Can bypass the blood vessel or the nervous tissue that meet effectively, avoid using the stereoplasm member to avoid the operation need carry out the trouble of bending, the member of suit is whole to be combined together simultaneously, reduce the use to connecting the fastener, it is more convenient to make the locking at fracture position fixed, reduce the cost of external fixation frame, alleviate the weight and the volume of mount, for the fracture patient provides comparatively comfortable use experience, lighter weight and answer the support body volume that reduces also can make the more convenient activity of carrying on of patient.

Drawings

Fig. 1 is a schematic view of the state of use of the present invention.

Fig. 2 is a front structural view of fig. 1.

Fig. 3 is a perspective view of the assembly of the present invention.

Fig. 4 is a sectional structure view of fig. 3.

Fig. 5 is a block diagram of the boom of fig. 3.

Fig. 6 is a block diagram of the adaptive flipping block of fig. 3.

Fig. 7 is a block diagram of the fifth wheel of fig. 3.

Fig. 8 is a diagram of another assembly of the present invention.

Fig. 9 is a block diagram of another adaptive flipping block of the present invention.

The reference numbers in the figures: the self-adaptive locking device comprises a main rod 1, a traction base 2, a cylindrical groove 3 at the end part, a screw rod 4 at the end part, a traction barrel 5, a flat hole 6, a self-adaptive turning block 7, a rotating shaft 8, a central through hole 9, an auxiliary adjusting screw 10, an upper barrel 11 for height adjustment, a lower barrel 12 for height adjustment, a rear support 13, a transverse through hole 14, a longitudinal turning matching locking rod 15, an external pressing barrel 16, an internal pressing barrel 17, a matching locking hole 18, a transverse turning matching sliding base 19, a fixing ring 20, a lock wire 21, a fixing screw through hole 22, an end plug 23, a plug through hole 24, an auxiliary lock hole 26, a first auxiliary lock pin 27 and a second auxiliary lock pin 28.A is first staple, and B is second staple (supplementary regulation nail), and C is the third staple, and D is the fourth staple, and E is the fifth staple.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the drawings.

Example 1: a traction reduction external fixation frame assembly as shown in figures 1 and 2 has a traction function, a cooperation reduction function, a locking function after reduction and the like. The application of the surgical instrument can simplify the use quantity of surgical instruments and reduce the surgical difficulty.

The specific structure of the device is shown in fig. 3 and 4, and it can be seen that the device mainly comprises a main rod 1, at least two fixing nails, at least one pair of adjusting nails, and a set of traction adjusting mechanism.

The specific structure of the traction adjusting mechanism is shown in fig. 4, and the mechanism comprises a traction seat 2, an adaptive turning block 7, an auxiliary adjusting nail 10, a matching sliding seat 19 and a fixing ring 20.

The concrete structure of the traction seat 2 is shown in fig. 7, a flat hole 6 is vertically arranged in the middle of the traction seat 2, shaft holes 81 are arranged on two side walls of the flat hole 6, a rear support 13 is fixed at the outer end of the traction seat 2, a transverse through hole 14 is transversely arranged on the upper edge of the rear support 13, and an end screw rod 4 is arranged at the front end of the traction seat 2.

As shown in FIG. 6, the adaptive turning block 7 has two symmetrical rotating shafts 8 on its two sides, and the two rotating shafts are fitted in the shaft holes 81 on the two side walls of the flat hole.

A central through hole 9 vertically penetrates through the middle part of the self-adaptive turning block 7, a threaded section is arranged at the upper end of an auxiliary adjusting nail 10, a self-tapping thread section is arranged at the lower end of the auxiliary adjusting nail 10, the threaded section of the auxiliary adjusting nail 10 is sleeved in the central through hole 9, and a height adjusting upper threaded sleeve 11 and a height adjusting lower threaded sleeve 12 are respectively arranged on the upper side and the lower side of the through hole.

A through hole 29 is vertically arranged in the middle of the transverse turning matching sliding seat 19, the auxiliary adjusting nail 10 is sleeved in the through hole 29 of the transverse turning matching sliding seat 19, a rear arc hole is formed in the transverse turning matching sliding seat 19 and is sleeved with a fixing ring 20 in a matching mode, the fixing ring 20 is fixed on an external support or an operation bed frame, and a locking wire 21 is arranged between the fixing ring 20 and the transverse turning matching sliding seat 19.

A rear support 13 is fixed at the outer end of the traction seat 2, a transverse through hole 14 is transversely arranged on the upper edge of the rear support 13, a longitudinally-turned matched locking rod 15 is sleeved in the transverse through hole, and an external pressure threaded sleeve 16 and an internal pressure threaded sleeve 17 are respectively arranged at two ends of the longitudinally-turned matched locking rod 15.

The inner end of the longitudinal turning matching locking rod 15 is provided with a matching locking hole 18, the inner diameter of the matching locking hole 18 is slightly larger than the outer diameter of the auxiliary adjusting nail 10, and the matching locking hole 18 is sleeved on the outer side of the auxiliary adjusting nail.

The structure of the main rod 1 is shown in fig. 5, two ends of the main rod 1 are respectively provided with an end cylindrical groove 3, and a traction seat 2 is arranged in one end cylindrical groove 3.

A traction threaded sleeve 5 is sleeved outside an end screw rod 4 of the traction seat 2, the end screw rod 4 is sleeved in the end cylindrical groove 3, the traction threaded sleeve 5 is kept to be positioned outside the end of the main rod 1,

as can be seen in fig. 3, each fixing nail comprises a self-tapping thread section at the lower end and a thread section at the upper end, the self-tapping thread section at the lower end of each fixing nail is used for screwing into the bone at the corresponding part, and the thread sections at the upper end are respectively fixed together with the corresponding main rod through holes.

In use, the present embodiment is first to cross the main rod 1 on both sides of the fracture joint, as shown in fig. 2, i.e. to ensure that the two fixation nail through holes 22 on the main rod 1 are respectively located on both sides of the fracture joint.

Installation of a first fixing nail A: after the first fixing nail A firstly penetrates through the far-end fixing nail through hole, the self-tapping thread at the lower end of the fixing nail A is screwed into the far-end bone, and the thread section at the upper end of the fixing nail A is screwed into the thread in the main rod fixing nail through hole, so that the fixing nail A and the main rod far-end fixing hole are fixed into a whole. Then the traction adjusting mechanism is butted with the near end of the main rod, namely, the end screw rod 4 is inserted into the end cylindrical groove 3 at the near end of the main rod, and the traction threaded sleeve 5 is sleeved on the outer side of the end screw rod 4.

And (3) installing a second fixing nail B: second fixing nails B (namely auxiliary adjusting nails 10) respectively penetrate through holes 29 of the transverse turning matching slide carriage 19, and simultaneously penetrate through central through holes 9 of the self-adaptive turning block 7. The lower end self-tapping thread section of the fixing nail B is screwed into the near-end bone, and an upper height adjusting threaded sleeve 11 and a lower height adjusting threaded sleeve 12 are respectively arranged at the upper side and the lower side of the central through hole 9.

Traction adjustment: the traction screw sleeve 5 is screwed to push the near end of the main rod 1, so that the traction seat 2 and the main rod 1 are far away from each other, namely the fixing nail A and the fixing nail B are far away from each other, and the traction purpose is realized.

Resetting, adjusting and positioning: the loosening height adjusting screw sleeve 11, the loosening height adjusting screw sleeve 12, the loosening locking screw 21, the loosening external pressure screw sleeve 16 and the internal pressure screw sleeve 17 are adjusted in any one of up-and-down translation, upward swing, left-and-right translation and left-and-right swing or combined adjustment through a manual power or translation driving instrument, after the two ends of the fracture are butted, the transversely-turning matching slide seat 19 and the fixing ring 20 are fixed together through the locking screw 21, the external pressure screw sleeve 16 and the internal pressure screw sleeve 17 at the two ends of the longitudinally-turning matching locking rod 15 are respectively pressed and fixed on the rear support, and finally the traction screw sleeve 5 is reversely screwed to enable the two ends of the fracture to be butted.

And (3) installing a third fixing nail C: the fixing nail C is sleeved in the near-end fixing hole of the main rod 1 in a penetrating manner, the self-tapping thread section at the lower end of the fixing nail C is screwed into the near-end bone, and the thread section at the upper end of the fixing nail C is fixedly connected with the near-end fixing hole of the main rod 1 in a threaded manner.

Installation of a fourth staple D: an end plug 23 is inserted into the end cylindrical groove 3 at the far end of the main rod 1, a plug through hole 24 which penetrates through the main body of the end plug 23 along the radial direction is arranged, a fixing nail D penetrates and is sleeved in the plug through hole 24, a self-tapping thread section at the lower end of the fixing nail D is screwed into bone at the far end, and a thread section at the upper end of the fixing nail D is screwed into the thread of the inner wall of the plug through hole 24 for fixing.

And (3) installing a fifth fixing nail E: the traction adjusting mechanism is detached from the near end of the main rod 1, namely the fixing nail B is screwed out of the bone substance, and the end screw of the traction seat 2 is pulled out of the end cylindrical groove 3 at the near end. Inserting the other end plug 23 into the end cylindrical groove 3 at the near end of the main rod 1, wherein a plug through hole 24 penetrating through the main body of the end plug 23 along the radial direction is arranged, the fixing nail E penetrates and is sleeved in the plug through hole 24, the self-tapping section at the lower end of the fixing nail E is screwed into the far-end bone, and the thread section at the upper end of the fixing nail E is screwed into the thread on the inner wall of the plug through hole 24 for fixing. The screw-in position of the staple E may be the same position as the staple B, or may be different.

After the integral assembly, the main rod 1, the fixing nail A, the fixing nail C, the fixing nail D and the fixing nail E are reserved, and the traction adjusting mechanism is detached.

Based on the structure and the assembly sequence, the assembly can realize the function of fixing the external fixing frame under the condition of traction restoration.

The invention can also easily adjust the positions of the two end plugs at the two sides close to the outer end, thereby respectively controlling the nailing positions of the fixing nail D and the fixing nail E, namely the nailing positions of the two outermost nails which are suitable for rotating. Can bypass the blood vessel or the nervous tissue that meet effectively, avoid using the stereoplasm member to avoid the operation need carry out the trouble of bending, the member of suit is whole to be combined together simultaneously, reduce the use to connecting fastener, it is more convenient to make the locking at fracture position fixed, reduce the cost of external fixation frame, alleviate the weight and the volume of mount, for the fracture patient provides comparatively comfortable use experience, lighter weight and reply the support body volume that reduces also can make the more convenient activity of carrying on of patient.

Example 2: in addition to the embodiment 1, the structure shown in fig. 8 is further adopted, that is, two end plugs 23 are first respectively sleeved in the end cylindrical grooves 3 at the two ends of the primary lever 1. The center of the outer end of the rod body of one end plug 23 at the near end is provided with a plug end cylindrical groove 30, the traction adjusting mechanism and the end plug 23 at the near end are sleeved together, and particularly, an end screw rod 4 of the traction adjusting mechanism is sleeved in the near end plug end cylindrical groove 30 in a matching mode. Through the assembly relationship and the installation sequence of the fixing nails as described in embodiment 1, the traction adjustment mechanism is finally removed, and the main rod 1 and the fixing nails a, the fixing nails C, the fixing nails D and the fixing nails E are reserved.

The difference between this embodiment and embodiment 1 is that the position of the fixing nail B is obviously different from that of the fixing nail E, and the fixing nail B is positioned outside the fixing nail E. And the fixing nail B does not need to be removed in advance, but the fixing nail B is finally removed after other fixing nails are respectively fixed.

The present embodiment has the same technical effects as embodiment 1.

Example 3: based on the embodiments 1 and 2, the adaptive turning block 7 as shown in fig. 9 is adopted, it can be seen that a threaded hole is transversely formed in the turning block, a central screw 31 is installed in the threaded hole, the rotating shafts 8 are respectively cylinders fixed at the outer ends of the central screw 31, inner hexagonal holes are formed in the axes of the rotating shafts of the cylinders at the two ends, so that screwing adjustment is facilitated, and when the rotating shafts are screwed, the position of the central screw 31 in the adaptive turning block 7 can be changed, so that the rotating shafts are eccentric to the left side or the right side of the adaptive turning block 7. Baffle rings 32 are respectively arranged between the rotating shaft and the central screw rod, and after the rotating shafts at two ends are respectively sleeved in the shaft holes 81, each baffle ring 32 can be supported on the inner wall of the shaft hole 81. Therefore, the self-adaptive turnover block can be effectively translated left and right, and then the corresponding transverse movement adjustment of the fracture far-end fixing nail A and the fixing nail B at the near end is realized.

It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a pull external fixation frame subassembly that resets, includes mobile jib (1), has a series of staples on fixing mobile jib (1), its characterized in that still includes one set of traction adjustment mechanism, and this traction adjustment mechanism includes traction seat (2), self-adaptation upset piece (7), cooperation slide (19) and solid fixed ring (20), has tip cylinder groove (3) at the tip of mobile jib (1), installs in one of them tip cylinder groove (3) traction seat (2), traction seat (2) include tip screw rod (4), this tip screw rod (4) outside cover is equipped with pulls swivel nut (5), this tip screw rod (4) suit in tip cylinder groove (3), keep pulling swivel nut (5) to be located the mobile jib (1) tip outside the middle part of traction seat (2) has flat hole (6) along the vertical, and has shaft hole (81) in flat hole (6) both sides wall, there are symmetrical pivot (8) in the both sides of self-adaptation upset piece (7), and two pivot matching suit in flat hole's (81), and the central through-hole (9) the central through hole (9) of self-tapping adjustment piece (7) has the lower extreme in the central through hole of self-adjusting screw thread section (9), the lower extreme of this self-tapping screw thread is installed in the lower extreme of the screw thread of this self-adjusting screw thread section (9) separately, and the lower extreme is in the side-through hole (10) is in the side-adjusting screw thread section (10) on the lower extreme, swivel nut (12) under altitude mixture control still includes a suit the violently turn over cooperation slide (19) in supplementary regulation nail (10) outside, set up back arc hole and match the cover and be equipped with solid fixed ring (20) on should violently turn over cooperation slide (19), gu fixed ring (20) are fixed on outer support or operation bed frame, install lock silk (21) between solid fixed ring (20) and violently turn over cooperation slide (19) the outer end of traction seat (2) is fixed with back support (13), is equipped with horizontal perforation (14) along horizontal on back support (13), and its endotheca is equipped with and indulges and turns over cooperation locking lever (15), and external pressure swivel nut (16) and interior pressure swivel nut (17) are installed respectively to the both ends of should indulging cooperation locking lever (15), turns over the inner of indulging cooperation locking lever (15) and is equipped with cooperation locking hole (18), and the internal diameter of this cooperation locking hole (18) is slightly greater than the external diameter of supplementary regulation nail (10), and cooperation locking hole (18) suit is in the supplementary regulation nail outside.

2. The traction reduction external fixation frame assembly according to claim 1, wherein the two ends of the main rod (1) are respectively provided with an end cylindrical groove (3), each end cylindrical groove is respectively sleeved with an end plug (23), the body of the end plug (23) is provided with a plug through hole (24) which penetrates along the radial direction, and the fixation nail penetrates and is sleeved in the plug through hole (24).

3. The traction reduction external fixation frame assembly according to claim 1, characterized in that a flat hole (6) is vertically arranged in the middle of the traction seat (2), shaft holes (81) are arranged on two side walls of the flat hole (6), a rear support (13) is fixed at the outer end of the traction seat (2), a transverse through hole (14) is transversely arranged on the rear support (13), and an end screw (4) is arranged at the front end of the traction seat (2).

4. The traction reduction external fixation frame assembly according to claim 1, characterized in that a through hole (29) is vertically arranged in the middle of the transverse turning fit sliding seat (19), the auxiliary adjusting nail (10) is sleeved in the through hole (29) of the transverse turning fit sliding seat (19), a rear arc hole is arranged on the transverse turning fit sliding seat (19) and is matched and sleeved with a fixing ring (20), the fixing ring (20) is fixed on an external bracket or an operation bed frame, and a locking wire (21) is arranged between the fixing ring (20) and the transverse turning fit sliding seat (19).

5. The pull reduction external fixator assembly of claim 1, wherein each fixation screw comprises a self-tapping section at a lower end for screwing into a corresponding portion of bone and a threaded section at an upper end for securing together with the threaded section at the upper end in a corresponding main rod through hole.

6. The traction reduction external fixation frame assembly according to claim 1, wherein two end plugs (23) are respectively sleeved in the end cylindrical grooves (3) at the two ends of the main rod (1), wherein a plug end cylindrical groove (30) is arranged in the center of the outer end of the rod body of one end plug (23) at the near end, the traction adjustment mechanism and the end plug (23) at the near end are sleeved together, and particularly, an end screw (4) of the traction adjustment mechanism is sleeved in the near end plug end cylindrical groove (30) in a matching manner.

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