CN218889728U

CN218889728U - External fixing frame for continuous drawing in fracture convalescence

Info

Publication number: CN218889728U
Application number: CN202221857267.9U
Authority: CN
Inventors: 陈聚伍
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2023-04-21
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses a continuous drawing external fixing frame in fracture convalescence, wherein a first main rod and a second main rod are sleeved together and can stretch and slide but cannot rotate, a telescopic adjusting mechanism is arranged at the outer side of a sleeved part between the first main rod and the second main rod, end sleeve pieces are respectively sleeved in insertion holes at two ends of the first main rod and the second main rod, fixing nail holes are respectively penetrated through the first main rod and the second main rod in the radial direction and are provided with fixing nails, and adjusting nail holes are respectively penetrated through the end sleeve pieces at two ends in the radial direction and are provided with adjusting nails. According to the utility model, the fixing nails positioned at two sides of the fracture can be pulled inwards by inwards adjusting the first and second pulling main rods, so that continuous traction and pressurization in the convalescence period are realized, and the problem that the bone gap is continuously increased and cannot be effectively butted due to bone absorption in the recovery process of the fracture part is solved.

Description

External fixing frame for continuous drawing in fracture convalescence

Technical Field

The utility model belongs to the field of external fixation frame instruments in the fracture convalescence, and particularly relates to a continuous drawing external fixation frame in the fracture convalescence.

Background

The external fixing support for fracture is mainly formed by connecting external fixing support rods through external fixing screws. The external fixing support is mainly used for various open fracture injuries with serious limbs, maintains the stability and the position of fracture as much as possible and reduces the fracture dislocation risk. In the case of fracture crushing or infection, the fracture is fixed externally and then the upper and lower ends of the fracture are fixed. The lead fixation is coupled to the external fixator and then adjusted to the extent that the fixation may be performed for comminuted fracture or where internal fixation is not appropriate and to assist in fracture healing.

The external fixing frame for fracture has the functions of supporting and fixing. After fracture, some patients have no way to perform surgical treatment immediately or to perform internal fixation treatment due to physical reasons or to the extent of soft tissue and open contamination of the skin at the fracture site, so that only external fixation stents can be used for treatment. The external fixing bracket does not cross the broken end of the fracture and is far away from the fracture part, so the safety of tissues is relatively better, the infection after the fracture caused by pollution of the broken end is avoided, and even osteomyelitis can be avoided. So the external fracture fixation frame is very important in the treatment of fracture.

When current outer frame is fixed to two sections of fracture, need at least two staple in every section just can ensure that outer frame is fixed after, two sections of fracture can not appear swinging, rotate and axial telescopic movement, but during actual operation, fix two inboard frame holes earlier, then fix two outside frame holes, because two inboard frame holes can freely select fixed position when being fixed, easy fixing, but two outside frame holes are fixed, can appear sometimes that the hole site is issued and is aimed at blood vessel or nerve, can't directly nail down, lead to outer frame fixed difficulty, even need punch fixed problem again.

In addition, the existing external fixing frame is generally made of hard cylindrical metal rods, and is fixedly combined through connecting fasteners and the like to form a stable and firm frame body when in use, so that the fracture position is assisted to be positioned and recovered. When the existing external fixing frame is used, a certain problem exists, a large amount of tissues such as blood vessels and nerves exist in a human body, and in order to prevent the locking nails inserted into broken bones from damaging the blood vessels or the nerves, a hard metal rod piece is required to be bent, or the hard metal rod piece is required to be connected with a fastener through deflection to avoid the blood vessels or the nerves.

The common outer frame metal rod is quite firm, the bending is time-consuming and labor-consuming, the positioning is not easy, the connecting fastener deflects to avoid the blood vessel easily, but the locking and the fixing are difficult.

The existing external fracture fixing frame does not have the problem of inward drawing and adjusting functions after being fixedly installed and does not have the continuous traction and pressurization functions.

Disclosure of Invention

Aiming at the problem that the existing external fracture fixation frame does not have an inward drawing adjusting function after being fixedly installed, the utility model provides the external fracture fixation frame which is continuously drawn in the convalescence period, so that the external fracture fixation frame is utilized to provide continuous traction and pressurization for two ends of the fracture in the convalescence period.

The utility model solves the technical problems by adopting the scheme that: the continuous drawing external fixing frame comprises a first main rod and a second main rod which are mutually sleeved and can slide in a telescopic manner but cannot rotate, wherein a telescopic adjusting mechanism is arranged at the outer side of a sleeved part between the first main rod and the second main rod, end insertion holes are respectively formed in the two outer ends of the first main rod and the second main rod, end sleeve pieces are respectively sleeved in each end insertion hole, fixing nail holes are respectively formed in the first main rod and the second main rod in a penetrating manner in the radial direction, fixing nails are respectively assembled, adjusting nail holes are respectively formed in the end sleeve pieces at the two ends in a penetrating manner in the radial direction, and adjusting nails are respectively assembled; the fixing nails are respectively fixed with the corresponding main rods, and the adjusting nails are respectively fixed with the corresponding end sleeves.

The telescopic adjusting mechanism is a rotary screw sleeve, a middle interlayer is arranged in the middle of a pipe cavity of the telescopic adjusting mechanism, threaded holes are formed in the axial position of the middle interlayer, a left sleeve hole and a right sleeve hole are respectively formed in the left side and the right side of each middle layer, and an annular flange is arranged in each sleeve hole; the main body part of the first main rod comprises a middle jack at the right end, an end jack at the left end, a fixing nail hole penetrating through the middle part along the radial direction, and a threaded section is arranged on the outer wall side of the main rod at one end of the middle jack; the second main rod comprises a middle plug positioned at the left side, an anti-rotation structure is arranged on the surface of the middle plug, an end jack is arranged at the right side, and a fixing nail hole penetrating in the radial direction is arranged in the middle of the rod body; the middle part of the middle plug is also provided with an annular convex spring seat; the first main rod and the second main rod are sleeved together, namely the middle plug is matched and sleeved in the middle jack; a thrust spring is sleeved between the spring seat and the annular flange.

Therefore, under the action of the thrust spring, the first main rod can be pushed to the left, so that the first main rod and the second main rod have a contraction function. But after the rotating screw sleeve is screwed, the position of the annular flange can be changed, so that the right end of the thrust spring is pressed to move leftwards. The fixing nails are sleeved in the fixing nail holes.

The telescopic adjusting mechanism is a rotary screw sleeve, a middle interlayer is arranged in the middle of the rotary screw sleeve, a threaded hole is arranged in the center of the middle interlayer, and the threaded hole can be matched with a threaded section on the surface of the middle plug; the first main rod is provided with a first end jack at the left end of the rod body, a second end jack at the right end of the rod body, and a first fixing nail hole penetrating in the radial direction in the middle of the main rod, wherein the first end jack and the second end jack are flat round holes for preventing all parts from rotating mutually after sleeving; the second main rod is provided with a middle plug at the left end of the rod body, the right end of the second main rod is provided with a second end jack, and the middle part of the rod body is provided with a second fixing nail hole penetrating in the radial direction; the anti-rotation structure is arranged behind the side face of the middle plug, so that after the middle plug and the middle jack are mutually sleeved, the middle plug and the middle jack can only stretch and retract and cannot rotate; the outer circumference of the middle plug is a threaded section, the outer end wall of the middle jack of the first main rod is provided with an annular groove, the left end of the rotary screw sleeve is provided with a radial jack, the rotary screw sleeve is sleeved outside the right end of the first main rod, and then is introduced from the radial jack through a bolt and is embedded into the annular groove, so that the rotary screw sleeve can rotate around the first main rod, but the rotary screw sleeve and the rotary screw sleeve cannot stretch and move.

A plane or a key is arranged in the middle jack and is used for being matched with a milling plane or a key groove of the middle plug, so that the primary rod I and the primary rod II can only stretch and slide but cannot rotate after being sleeved together.

One end of the end sleeve member is provided with an end plug, the other end of the end sleeve member is provided with a baffle table, the end plug is matched and sleeved with a corresponding end jack, and an exposed end part positioned outside the baffle table is penetrated with an adjusting nail hole along the radial direction.

The fixing nail and the adjusting nail comprise a threaded column at the rear end and a self-tapping section at the front end, wherein the self-tapping section is used for screwing in the bone inner layer. Threaded holes are respectively formed in the fixing holes and the adjusting holes, and the threaded columns can be matched with the threaded holes in the corresponding holes.

The middle plug is matched and sleeved in the middle jack, and the threaded hole of the rotary threaded sleeve is in threaded connection with the threaded section on the surface of the middle plug, so that when the rotary threaded sleeve is rotated, the main rod can be driven to approach or depart from the main rod one by one.

The utility model has the beneficial effects that: compared with the existing external fixing frame, the external fixing frame provided by the utility model can enable the fixing nails positioned at two sides of the fracture to be pulled inwards by adjusting the mode of pulling the first main rod and the second main rod inwards, so that continuous traction and pressurization in the convalescence period are realized. Thereby solving the problem that the bone gap is continuously increased and the effective butt joint cannot be realized due to the bone absorption of the fracture part in the recovery process. When the two fixing nails are installed, the tight butt joint of the bone gap is not required strictly, so that the bone gap butt joint is realized after the whole fixing is carried out.

The utility model can also easily adjust the positions of the nail locking holes on two sides close to the outer ends, is convenient and labor-saving, bypasses encountered blood vessels or nerve tissues, avoids the trouble that bending is needed for avoiding operation by using hard rods, and simultaneously combines the sleeved rods integrally, reduces the use of connecting fasteners, ensures that the fracture part is more convenient to lock and fix, reduces the cost of an external fixing frame, lightens the weight and the volume of the fixing frame, provides more comfortable use experience for fracture patients, and ensures that the patients can move more conveniently by adopting lighter weight and the reduced volume of the frame body in reply.

Drawings

Fig. 1 is a drawing showing a state of stretching of a fixing frame according to the present utility model.

Fig. 2 is a contracted state diagram of fig. 1.

Fig. 3 is a longitudinal section structural view of fig. 1.

Fig. 4 is a longitudinal section structural view of fig. 2.

Fig. 5 is a left side view of fig. 1.

Fig. 6 is a sectional structural view of the rotary screw sleeve of fig. 1.

Fig. 7 is a diagram of the second structure of the boom in fig. 1.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a view of a structure of the boom of fig. 1.

Fig. 10 is a sectional view of fig. 9B-B.

Fig. 11 is a structural view of the staple.

Fig. 12 is a block diagram of an end-fitting.

Fig. 13 is a telescopic view of another mount of the present utility model.

Fig. 14 is a longitudinal section structural view of fig. 13.

Fig. 15 is a sectional structural view of the rotary screw sleeve of fig. 13.

Fig. 16 is a structural diagram of the second boom in fig. 14.

Fig. 17 is a structural view of the first boom of fig. 14.

Reference numerals in the drawings: the novel adjustable screw comprises a first main rod 1, a second middle inserting hole 11, an annular groove 12, a first end inserting hole 13, a first fixed screw hole 14, a threaded section 15, a second main rod 2, a middle plug 21, an anti-rotation structure 22, a second end inserting hole 23, a second fixed screw hole 24, a spring seat 25, a rotary screw sleeve 3, a middle partition 31, a threaded hole 32, a left sleeve hole 33, a radial inserting hole 34, a right sleeve hole 35, an annular flange 36, a thrust spring 4, an end sleeve piece 5, an end plug 51, a baffle 52, an adjusting screw hole 53, a threaded hole 54, a fixed screw 6, a threaded column 61, a self-tapping section 62 and an adjusting screw 7.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

Example 1: the external fixing frame for continuous drawing in the fracture convalescence as shown in fig. 1 and 2 mainly comprises a main rod 1, a main rod 2, a telescopic adjusting mechanism and a thrust spring 3, so that the external fixing frame still has a continuous controllable elastic drawing function in the convalescence after being used. In the figure, it can be seen that the primary rod 1 and the secondary rod 2 of the external fixing frame can be stretched outwards and stretched inwards. Through flexible adjustment mechanism, can change the flexible degree of mobile jib 1 and mobile jib two 2.

As shown in fig. 9 and 10, the main body part of the main rod 1 of the external fixing frame of this type comprises a middle insertion hole 11 at the right end in the drawing, an end insertion hole 13 at the left end, a fixing nail hole 14 penetrating through the middle part in the radial direction, and a threaded section 15 on the outer wall side of the rod at one end of the middle insertion hole.

The second main rod 2 shown in fig. 7 and 8 comprises a middle plug 21 positioned at the left side in the drawing, an anti-rotation structure 22, such as a milling plane or a key slot, is arranged on the surface of the middle plug 21, an end jack 23 is positioned at the right side in the drawing, and a second fixing nail hole 24 penetrating in the radial direction is arranged in the middle of the rod body. Also in the middle of the middle plug 21 is an annular protruding spring seat 25.

As shown in fig. 6, one implementation form of the telescopic adjusting mechanism is a rotary screw sleeve 3, a middle partition layer 31 is arranged in the middle of a pipe cavity of the rotary screw sleeve, a threaded hole 32 is arranged at the axial position of the middle partition layer 31, a left sleeve hole 33 and a right sleeve hole 35 are respectively arranged at the left side and the right side of each middle partition layer 31, and an annular flange 36 is arranged in each sleeve hole 35.

As shown in fig. 3, the first main rod 1 and the second main rod 2 are sleeved together, and the middle plug 21 is matched and sleeved in the middle jack 11. A thrust spring 4 is fitted between the spring seat 25 and the annular flange 36. Thus, the primary lever 1 can be urged leftward by the urging spring 4, so that the primary lever and the secondary lever have a contracting function. But after screwing the rotary screw sleeve 3, the position of the annular flange 36 can be changed, thereby pressing the right end of the thrust spring 4 to move leftward. The first fixing nail hole 14 is sleeved with the fixing nail 6.

In the above structure, a plane or key is provided in the middle jack 11 to match with a milling plane or key slot of the middle plug 21, so that the primary rod 1 and the primary rod 2 can only slide in a telescopic manner but cannot rotate after being sleeved together.

As shown in fig. 4 and 12, the two outer ends of the first main rod 1 and the second main rod 2 are respectively provided with a first end jack 13 and a second end jack 23, and each end jack is respectively sleeved with an end sleeve member 5.

In fig. 12, the end sleeve 5 has an end plug 51 at one end and a stop 52 at the other end, and after the end plug 51 is fitted into the corresponding end socket, an exposed end outside the stop 52 has an adjusting nail hole 53 penetrating radially.

As can be seen from fig. 1 and 2, fixing nail holes are respectively penetrated in the radial direction on the primary rod 1 and the secondary rod 2, fixing nails are respectively assembled, adjusting nail holes are respectively penetrated in the radial direction on the end sleeves 5 at the two ends, and adjusting nails are respectively assembled.

As shown in fig. 11, the staple and the adjustment pin include and are associated with a threaded post 61 at the rear end and a self-tapping section 62 at the front end for threading into the bone inner layer. Threaded holes are provided in the fixing hole and the adjusting hole, respectively, as shown by the threaded holes 54 in fig. 12, and the threaded posts 61 can be fitted together in a matching manner with the threaded holes in the corresponding holes.

The fixing frame is arranged above the fracture part, specifically, the first main rod and the second main rod are respectively positioned at two sides of the fracture gap, namely, the fixing nail holes of the first main rod and the second main rod are respectively positioned at two sides of the fracture part, two fixing nails respectively penetrate through the fixing nail holes, self-tapping screw sections of the fixing nails penetrate through the fixing nail holes to fix the inside of the broken bones, and screw columns of the fixing nails are fixedly arranged with the fixing nail holes through screw threads. The first main rod and the second main rod are respectively fixed in advance, so that the positions can be selected to avoid blood vessels and nervous systems. After the first main rod and the second main rod are respectively fixed, the end sleeve pieces respectively positioned at the two outer ends of the first main rod and the second main rod enable the adjusting nail hole to avoid blood vessels and nerve tissues through telescopic and rotary adjustment, and at the moment, the adjusting nail is penetrated into the adjusting nail hole for fixing again. Two fixing nails are fixed on each section of broken bone, so that the broken bone and the rod piece are kept on the same straight line, and further the two sections of broken bones of the fracture are kept on the same straight line, thereby facilitating the butt joint growth recovery of the fracture part.

The sequence of installing each fixing nail and adjusting nail is that firstly installing two fixing nails, fixing the two fixing nails into a whole on the first main rod and the second main rod respectively, then installing adjusting nails at two ends respectively, pulling or rotating the end sleeve piece 5 outwards to select the best nail-entering position, avoiding blood vessels and nerve tissues, and then screwing in the two adjusting nails. Therefore, at least one fixing nail and one adjusting nail are respectively arranged on the upper sides of two ends of the fracture, and the possibility of adding the fixing nail or the adjusting nail on the basis is not limited.

Compared with the existing external fixing frame, the external fixing frame provided by the utility model can enable the fixing nails positioned at two sides of the fracture to be pulled inwards by adjusting the first main rod and the second main rod inwards. Thereby solving the problem that the bone gap is continuously increased and the effective butt joint cannot be realized due to the bone absorption of the fracture part in the recovery process. When the two fixing nails are installed, the tight butt joint of the bone gap is not required strictly, so that the bone gap butt joint is realized after the whole fixing is carried out.

Example 2: based on the embodiment 1, another external fixing frame for continuous fracture drawing is adopted, and the fixing frame mainly comprises a first main rod 1, a second main rod 2 and a telescopic adjusting mechanism, so that the external fixing frame has a rigid drawing function. Obviously, embodiment 1 also has an elastic drawing function after drawing adjustment by the telescopic adjustment mechanism, and can be self-adaptively drawn along with the enlargement of the bone fracture. However, the embodiment has a rigid drawing function, can not self-adaptively draw along with the enlargement of the bone fracture, but can realize the drawing function by frequent manual work through the telescopic adjusting mechanism.

Specifically, the external fixation frame takes the form of the structure shown in fig. 13 and 14.

Fig. 17 shows the structure of a first main rod 1, wherein the left end of the rod body is provided with a first end jack 13, the right end of the rod body is provided with a middle jack 11, the middle part of the rod body is provided with a first fixing nail hole 14 penetrating in the radial direction, and the first end jack 13 and the middle jack 11 are oblate holes for preventing all parts from rotating mutually after being sleeved.

Fig. 16 shows the structure of the second main rod 2, wherein the left end of the rod body is provided with a middle plug 21, the right end of the rod body is provided with a second end jack 23, and the middle part of the rod body is provided with a second fixing nail hole 24 penetrating in the radial direction.

The anti-rotation structure 22 is behind the side of the middle plug 21, so that after the middle plug 21 and the middle jack 11 are mutually sleeved, the two can only stretch and retract and cannot rotate.

As can also be seen from fig. 16, the outer circumference of the middle plug 21 is a threaded section, and as can be seen from fig. 15, there is a middle spacer 31 in the middle of the swivel nut 3, and a threaded hole is provided in the center of the middle spacer 31, which can be fitted together with the threaded section of the surface of the middle plug 21.

In addition, the outer end wall of the middle jack of the first main rod 1 shown in fig. 17 is provided with an annular groove 12, and the left end of the rotary screw sleeve 3 is provided with a radial jack 34, after the rotary screw sleeve 3 is sleeved outside the right end of the first main rod, the rotary screw sleeve 3 is introduced from the radial jack 34 and is embedded into the annular groove 12 through the bolt 8, so that the rotary screw sleeve 3 can rotate around the first main rod but can not move telescopically.

As shown in fig. 14, after the components are assembled, the middle plug 21 is matched and sleeved in the middle jack 11, and the threaded hole 32 of the rotary screw sleeve 3 is in threaded connection with the threaded section on the surface of the middle plug 21, so that when the rotary screw sleeve 3 is rotated, the main rod can be driven to approach or separate from the main rod one by one, and the purpose of telescopic control and adjustment is achieved.

The mounting manner of the end fitting 5 of the external mount of this embodiment is the same as that of embodiment 1, and will not be repeated.

As can be seen in fig. 13, fixing nail holes are radially penetrated through the primary rod 1 and the secondary rod 2, respectively, and are equipped with fixing nails, respectively, adjusting nail holes are radially penetrated through the end sleeves 5 at both ends, respectively, and are equipped with adjusting nails, respectively.

The embodiment has the technical effect similar to that of the embodiment 1, can provide inward traction force for two ends of the fracture in a manual mode in the rehabilitation period, increases the pressure of the bone gap, and prevents the bone gap from being too large so as to be beneficial to rehabilitation.

It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. The terms left, right, up, down, and inside and outside are relative terms.

Claims

1. The continuous drawing external fixation frame for the fracture convalescence is characterized by comprising a first main rod (1) and a second main rod (2), wherein the first main rod (1) and the second main rod (2) are mutually sleeved and can slide in a telescopic manner but cannot rotate, a telescopic adjusting mechanism is arranged at the outer side of a sleeved part between the first main rod (1) and the second main rod (2), end insertion holes are respectively formed in the two outer ends of the first main rod (1) and the second main rod (2), end sleeve pieces (5) are respectively sleeved in each end insertion hole, fixing nail holes are respectively penetrated through the first main rod (1) and the second main rod (2) in the radial direction, fixing nails are respectively assembled, and adjusting nail holes are respectively penetrated through the end sleeve pieces (5) at the two ends in the radial direction; the fixing nails are respectively fixed with the corresponding main rods, and the adjusting nails are respectively fixed with the corresponding end sleeves.

2. The continuous-pulling external fixing frame for fracture convalescence according to claim 1, characterized in that the telescopic adjusting mechanism is a rotary screw sleeve (3), a middle partition layer (31) is arranged in the middle of a tube cavity of the rotary screw sleeve, threaded holes (32) are arranged at the axial positions of the middle partition layer (31), a left sleeve hole (33) and a right sleeve hole (35) are respectively arranged at the left side and the right side of each middle partition layer (31), and an annular flange (36) is arranged in the right sleeve hole (35); the main body part of the first main rod (1) comprises a middle jack (11) at the right end, a first jack (13) at the left end, a first fixing nail hole (14) penetrating through the middle part along the radial direction, and a threaded section (15) on the outer wall side of the main rod at one end of the middle jack; the second main rod (2) comprises a middle plug (21) positioned at the left side, an anti-rotation structure (22) is arranged on the surface of the middle plug (21), the second end jack (23) is arranged at the right side, and the middle part of the rod body is provided with a second fixing nail hole (24) penetrating in the radial direction; the middle part of the middle plug (21) is also provided with an annular convex spring seat (25); the primary rod I (1) and the secondary rod II (2) are sleeved together, namely, the middle plug (21) is matched and sleeved in the middle jack (11); a thrust spring (4) is sleeved between the spring seat (25) and the annular flange (36).

3. The continuous-pulling external fixing frame for fracture convalescence according to claim 1, wherein the telescopic adjusting mechanism is a rotary screw sleeve (3), a middle partition layer (31) is arranged in the middle of the rotary screw sleeve (3), a threaded hole is arranged in the center of the middle partition layer (31), and the threaded hole can be matched with a threaded section on the surface of a middle plug (21) to be installed together; the main rod I (1) is provided with an end jack I (13) at the left end of the rod body, a middle jack (11) at the right end of the rod body, and a fixing nail hole I (14) penetrating in the radial direction is arranged in the middle of the main rod I, wherein the end jack I (13) and the middle jack (11) are flat round holes for preventing all parts from rotating mutually after sleeving; the second main rod (2) is provided with a middle plug (21) at the left end of the rod body, the right end of the second main rod is provided with a second end jack (23), and the middle part of the rod body is provided with a second fixing nail hole (24) penetrating in the radial direction; the anti-rotation structure (22) is arranged behind the side surface of the middle plug (21), so that after the middle plug (21) and the middle jack (11) are mutually sleeved, the two can only stretch and retract but cannot rotate; the outer circumference of the middle plug (21) is a threaded section, the outer end wall of the middle jack of the first main rod (1) is provided with an annular groove (12), the left end of the rotary screw sleeve (3) is provided with a radial jack (34), the rotary screw sleeve (3) is sleeved outside the right end of the first main rod, and is introduced from the radial jack (34) through the bolt (8) and embedded into the annular groove (12), so that the rotary screw sleeve (3) can rotate around the first main rod, but the rotary screw sleeve and the rotary screw sleeve cannot move in a telescopic manner.

4. The continuous-pulling external fixing frame for fracture convalescence according to claim 2, wherein a plane or a key is arranged in the middle jack (11) and is used for matching with a milling plane or a key slot of the middle plug (21), so that after the primary rod (1) and the secondary rod (2) are sleeved together, the primary rod (1) and the secondary rod (2) can only slide in a telescopic way but cannot rotate.

5. The continuous-pulling external fixing frame for fracture convalescence according to claim 1, characterized in that one end of the end sleeve (5) is provided with an end plug (51), the other end is provided with a baffle (52), the end plug (51) is matched and sleeved with a corresponding end jack, and the exposed end part positioned outside the baffle (52) is penetrated with an adjusting nail hole (53) along the radial direction.

6. The continuous-pulling external fixator for fracture convalescence according to claim 1, wherein the fixing nails and the adjusting nails comprise threaded posts (61) at the rear end and self-tapping sections (62) at the front end, the self-tapping is used for screwing into the bone inner layer, threaded holes are respectively formed in the fixing holes and the adjusting holes, and the threaded posts (61) can be matched with the threaded holes in the corresponding holes to be installed together.

7. The external fixator for continuous fracture convalescence according to claim 2, wherein the middle plug (21) is sleeved in the middle jack (11) in a matched manner, and the threaded hole (32) of the rotary screw sleeve (3) is in threaded connection with the threaded section on the surface of the middle plug (21), so that when the rotary screw sleeve (3) is rotated, the main rod can be driven to approach or separate from the main rod from one side.