CN104622526B - Elastic skin expander and its skin traction system, hook bar fixation system - Google Patents

Abstract

The invention relates to an elastic skin dilator for clinical application in orthopedics and plastic surgery, a skin traction system, and a hook bar fixing system. Nut, solid rod nut, sliding bushing, pressure regulating spring, pressure regulating wheel, solid wheel nut are formed, threaded rod is radially provided with solid rod nut, sliding sleeve, pressure regulating spring, pressure regulating wheel, solid wheel nut. The traction steel needle is a cylindrical steel needle, steel wire, or cable, and the rod clamp is divided into I type, II type, III type, IV type rod clamp and other forms. Utilize the elastic skin expander and its skin traction system, hook rod fixing system to expand the skin, rotate the pressure regulating wheel to compress the pressure regulating spring, and receive the reaction force of the fixed clamp block of the rod clamp, the pressure regulating spring gives the pressure regulating wheel a reverse force , and then drive the threaded rod, needle fixing hook, and traction steel needle to apply tension to the skin, and the skin gradually expands and grows under the action of tension, accelerating wound healing.

Description

Elastic skin expander and its skin traction system, hook bar fixation system

technical field

The invention relates to an elastic skin expander for clinical application in orthopedics and plastic surgery.

Background technique

Orthopedics and plastic surgery sometimes use microsurgical techniques to repair skin defects with vascular pedicle flaps, local flap transfer repairs or free flap transplantation repairs, which are traumatic and risky; sometimes small-area head and face skin defects are treated with The balloon-type skin dilator performs skin stretching and performs partial skin flap transfer and repair, which has few indications, long treatment time, small transfer area, easy compression of deep tissues, and prone to infection at the implantation site of the balloon.

Contents of the invention

In order to make up for the shortcomings of the current application of microsurgical techniques or balloon skin dilators in the treatment of skin defects, the purpose of the first invention is to provide a hook rod fixation system for clinical application in orthopedics and plastic surgery, and the second invention The purpose of the third invention is to provide a skin traction system composed of several hook rod fixing systems and other components, and the third invention aims to provide an elastic skin expander composed of several skin traction systems and traction steel nails.

Technical scheme of the present invention is as follows:

As the first form of the hook bar fixing system used clinically in orthopedics and orthopedics, the hook bar fixing system includes: threaded rods, fixing hooks, fixing wheel nuts, sliding sleeves, pressure regulating springs, pressure regulating wheels, fixing Needle nut or fixed needle screw; wherein, the main part of the threaded rod is in the shape of a cylindrical rod and has external threads, and the fixed wheel nut, pressure regulating wheel, pressure regulating spring and The sliding sleeve, the fixed wheel nut and the pressure regulating wheel are respectively threadedly connected with the threaded rod, and the fixed wheel nut is used to fix the pressure regulating wheel; the sliding sleeve is a cylindrical hollow sleeve, and the threaded rod axially penetrates the sliding sleeve. The sliding sleeve is slidingly connected with the threaded rod; the pressure regulating spring is sleeved on the threaded rod, the upper end of the pressure regulating spring abuts against the lower end surface of the pressure regulating wheel, and the lower end of the spring abuts against the upper end surface of the sliding sleeve; the fixed hook is set on At the lower end of the threaded rod, the fixing hook extends downward along the axial direction of the threaded rod and forms a hook portion, and above the hook portion of the fixing hook, the needle-fixing nut or needle-fixing screw is arranged.

As the first preferred embodiment of the hook rod fixing system, further, the fixing hook is integrally formed with the lower end of the threaded rod, the needle fixing nut is threadedly connected with the threaded rod, and the needle fixing nut is located at the bottom of the fixing hook above the hook.

As a second preferred embodiment of the hook rod fixing system, further, the fixing hook is integrally formed with the lower end of the threaded rod, and the radial dimension of the connecting part of the fixing hook and the threaded rod is larger than the radial dimension of the main body of the threaded rod, A radially through threaded hole is also provided at the lower part of the connecting part, and the needle-fixing screw is screwed into the threaded hole.

As the third preferred embodiment of the hook rod fixing system, further, the fixing hook is detachably connected to the lower end of the threaded rod, and the upper end of the fixing hook has a connecting part, and the radial dimension of the connecting part is larger than that of the threaded rod The radial dimension of the main body part, and the connecting part has a hollow cylindrical structure, the inner wall of the cylindrical structure is provided with internal threads, and the threaded rod extends into the hollow cylindrical structure of the fixing hook connecting part and is threadedly connected with the fixing hook The lower part of the connecting part of the fixed hook is also provided with a radially through threaded hole, and the needle-fixing screw is screwed into the threaded hole; the threaded rod is also provided with a rod-fixed nut, and the rod-fixed nut is threadedly connected with the threaded rod And it is located above the connecting part of the fixed hook.

As the fourth preferred embodiment of the hook rod fixing system, further, the fixing hook is detachably connected to the lower end of the threaded rod, and the upper end of the fixing hook has a connecting part, and the radial dimension of the connecting part is larger than that of the threaded rod The radial dimension of the main body part, and the connecting part has a hollow cylindrical structure, and the threaded rod extends into the hollow cylindrical structure of the connecting part of the fixed hook; a radially through threaded hole is also provided at the lower part of the connecting part of the fixed hook , the needle-fixing screw is screwed into the threaded hole; a threaded hole through one side is also provided above the connecting part above the needle-fixing screw, and a fixing rod screw is screwed into the threaded hole to extend the fixing hook into the The threaded rod in the fixed hook connection secures the connection.

As the second form of hook rod fixation system clinically used in orthopedics and plastic surgery, the hook rod fixation system includes: threaded rod, fixed hook, fixed wheel nut, sliding sleeve, pressure regulating spring, pressure regulating wheel, fixed needle Nut or fixed needle screw; wherein, the main part of the threaded rod is in the shape of a cylindrical rod and has external threads, and the fixed wheel nut, pressure regulating wheel, pressure regulating spring and sliding The casing, the fixed wheel nut and the pressure regulating wheel are respectively threadedly connected with the threaded rod, and the fixed wheel nut is used to fix the pressure regulating wheel; the sliding casing is a cylindrical hollow casing, and the threaded rod axially penetrates the sliding casing. The sliding sleeve is slidingly connected with the threaded rod; the pressure regulating spring is sleeved on the threaded rod, the upper end of the pressure regulating spring abuts against the lower end surface of the pressure regulating wheel, and the lower end of the spring abuts against the upper end surface of the sliding sleeve; the fixed hook is set on the The lower part of the threaded rod, the fixed hook extends radially to one side along the threaded rod and forms a hook portion, and the needle-fixing nut or needle-fixing screw is arranged above the hook portion of the fixing hook; The fixed hook has a connecting part, the radial dimension of the connecting part is larger than the radial dimension of the main part of the threaded rod, and the connecting part has a hollow oblong cylindrical structure in the radial direction, and the threaded rod extends into the fixed hook The hollow cylindrical structure of the connecting part; a radially through threaded hole is also provided at the end of the connecting part close to the hook part, and the needle fixing screw is screwed into the threaded hole; at the end of the connecting part away from the hook part The top end is also provided with a threaded hole penetrating on one side, and a fixing rod screw is screwed into the threaded hole, and the fixing hook is tightly connected with the threaded rod extending into the connecting part of the fixing hook.

As the fourth preferred embodiment of the hook rod fixing system, it is further characterized in that another fixing hook is provided in the middle of the threaded rod at intervals from the lower fixing hook, and the structure of the fixing hook is the same as that of the lower fixing hook.

The cross section of the hook part of the above-mentioned fixing hook is quadrangular or circular.

A skin traction system for clinical application in orthopedics and plastic surgery, characterized in that it consists of two hook bar fixing systems and a rod rod clamp, wherein the threaded rods of the two hook bar fixing systems are connected by the rod The rod clip is connected, and the rod clip is fixed on the outer wall of the sliding sleeve of the skin traction system. Or it consists of 1 hook rod fixing system and 1 needle clip; or it consists of 1 hook rod fixing system.

An elastic skin expander for clinical application in orthopedics and plastic surgery, characterized in that it consists of several skin traction systems and traction steel needles, and the needle fixing nut, needle fixing screw, or needle clamp can be rotated to move the needle The traction steel pin is fixed.

Further, the traction steel needle is one or more of a cylindrical steel needle, a needled steel wire, or a cable.

Further, the rod clamp can be set as one or more forms of I-type rod clamp, II-type rod clamp, III-type rod clamp, and 1V-type rod clamp; wherein, the I-type rod clamp consists of a clamp Head A (11), collet B (13) and fixing nut (12), the heads of collet A (11) and collet B (13) are hollow cylindrical, and the round hole and sliding sleeve (5) , threaded rod (1), the end of chuck A (11) is a cylindrical threaded rod, and a fixed nut (12) is arranged radially to fix the tail end of chuck A (11), and the end of chuck B (13) The tail end is a hollow cylindrical tube, the inner wall is threaded, and is threadedly connected with the threaded rod at the tail end of the clamp A (11); the type II rod clamp consists of clamp block A (16), clamp block a (17), fastening screw ( 14) Composed of gaskets (15), one end of the clamp block A (16) and one end of the clamp block a (17) on the arc surface are set to correspond to the sliding sleeve (5) and the threaded rod (1) and run through the round hole of the clamp block, and the flat end Set a round hole corresponding to the fastening screw (14) through the clamping block, one end of the plane is separated by a gap of about 2mm, the direction of the two holes is vertical, the other side of the clamping block a (17) is threaded with the head end of the fastening screw (14) Connection, clamp block A (16) and fastening screw (14) head end corresponding surface is provided with washer (15) and fastening screw (14) Tail corresponding groove; ), clamping block a (20), clamping block B (21), clamping block b (23), fastening screw (25), washer (24), tail nail (18), and spread out spring (22) to form; Clamp block A (19), clamp block a (20), clamp block B (21), and clamp block b (23) are all set to have one end as an arc surface and one end as a plane, and the center is set to match the fastening screw (25). Adaptive round hole, the center round hole of clamp block A (19) is threaded, and the tail end of the fastening screw (25) is threaded; clamp block A (19) is connected with clamp block a (20) and clamp block B (21) One end of the arc-shaped surface corresponding to the clamp block b (23) is provided with an arc-shaped groove, which is compatible with the sliding sleeve (5) and the threaded rod (1), and one end of the plane is provided with a corresponding convex surface and a concave surface. Slightly more; clamp block a (20) and clamp block B (21) are separated by a stretch spring (22), the fastening screw (25) axially crosses the stretch spring (22), and the fastening screw (25 ) head end is set as hollow, and is threadedly connected with the tail nail (18), and the clamp block b (23) is provided with a groove corresponding to the gasket (24) corresponding to the tail end of the fastening screw (25); The rod clamp is composed of a central disc (28), a solid rod clamp block (27), a solid rod clamp block (29), and a fastening screw (26); the central disc (28) is disc-shaped, and the center is set and fastened The screw (26) is adapted to the round hole, and an arc-shaped groove and 2 pillars are arranged on the periphery of the solid rod clamp block (27), (29), which is used to fix the sliding sleeve (5), threaded rod (1), and the lower part The center of the solid rod clamping block (29) is provided with a round hole compatible with the fastening screw (26), and is threadedly connected with the fastening screw (26).

Further, the needle clamp can be set as consisting of clamping block A (31), clamping block a (32), clamping block B (33), clamping block b (35), fastening screw (37), gasket (36), Tail nail (30), strut spring (34) form; Clamp block A (31), clamp block a (32), clamp block B (33), clamp block b (35) are all set to one end and be arc-shaped surface, One end is a plane, and the center is provided with a round hole suitable for the fastening screw (37), and the center round hole of the clamp block A (31) is provided with a thread, which is threadedly connected with the tail end of the fastening screw (37); the clamp block A (31) One end of the arc-shaped surface corresponding to the clamp block a (32) is provided with an arc-shaped groove, which is compatible with the sliding sleeve (5) and the threaded rod (1), and the clamp block B (33) corresponds to the clamp block b (35) One end of the arc-shaped surface is provided with an arc-shaped groove, which is adapted to the traction steel needle, and one end of the clamp block A (31), clamp block a (32), clamp block B (33), and clamp block b (35) is provided with a corresponding The convex surface and the concave surface, the height of the convex surface is slightly higher than the depth of the concave surface; the clamp block a (32) and the clamp block B (33) are separated by a stretch spring (34), and the fastening screw (37) axially crosses and stretches Spring (34), fastening screw (37) head end is made as hollow, is threadedly connected with tail nail (30), clamp block b (35) and fastening screw (37) tail end corresponding place are provided with spacer (36 ) corresponding to the groove.

The beneficial effect of the present invention is that: the present invention adopts the hook bar fixing system composed of various parts, which is convenient for processing and assembly; in addition, due to the adoption of the continuous adjustment device, the elastic skin dilator composed of the hook bar fixing system can be used for The skin defect in any part of the body is expanded, the skin expands quickly, the indications are wide, the deep tissue is not compressed, the infection is not easy, and the wound healing can be accelerated. Use the elastic skin dilator to expand the skin, pass the traction steel needle intermittently through the skin, turn the fixation screw or the fixation nut, fix the fixation hook to the traction bone needle, and connect the fixation hook with the threaded rod with the fixation rod nut or fixation rod screw , the rod clamp connects the corresponding threaded rods, the pressure regulating wheel is rotated to compress the pressure regulating spring, and the pressure regulating spring gives the reverse force to the pressure regulating wheel, and then drives the threaded rod, The fixed needle hook and the pulling steel needle apply tension to the skin, and the skin gradually expands and grows under the action of tension until the wound is healed.

Description of drawings

The drawing description of the accompanying drawings is as follows

Figure 1 is a schematic diagram of the type I structure of the elastic skin expander hook rod fixation system

Figure 2 is a schematic diagram of the type II structure of the elastic skin expander hook rod fixation system

Figure 3 is a schematic diagram of the type III structure of the elastic skin expander hook rod fixation system

Figure 4 is a schematic diagram of the type IV structure of the hook rod fixation system of the elastic skin expander

Figure 5 is a schematic diagram of the V-shaped structure of the hook rod fixing system of the elastic skin expander and a fixed hook

Figure 6 is a schematic diagram of the I-type structure of the rod clamp

Figure 7 is a schematic diagram of the type II structure of the stick clamp

Figure 8 is a schematic diagram of the type III structure of the rod clamp

Figure 9 is a schematic diagram of the IV type structure of the rod clamp

Figure 10 is a schematic diagram of the needle clamp structure

Figure 11 is a schematic diagram of the structure of the traction steel needle

Figure 12 is a schematic diagram of the steel wire structure with needles

Figure 13 is a schematic diagram of the cable structure

Figure 14 is a schematic diagram of the type I structure of the elastic skin expander

Figure 15 is a schematic diagram of the type II structure of the elastic skin expander

Figure 16 is a schematic diagram of the type III structure of the elastic skin expander

Figure 17 is a schematic diagram of the elastic skin expander Type IV structure

Figure 18 is a schematic diagram of the V-shaped structure of the elastic skin expander

Figure 19 is a schematic diagram of the elastic skin expander Type VI structure

Detailed ways

Introduce embodiments of the present invention below in conjunction with accompanying drawing

The elastic skin dilator consists of a hook rod fixing system, a rod clip, and a traction steel needle.

The hook rod fixing system consists of a fixed hook (9), a fixing screw (7), a fixing rod nut (8), a threaded rod (1), a sliding sleeve (5), a pressure regulating spring (4), a pressure regulating wheel (3 ), fixed wheel nut (2). The head end of the fixed hook (9) is hook-shaped, the tail end is 4 prism-shaped, and a cylindrical hollow lumen is arranged in the axial direction, which is threadedly connected with the threaded rod (1), and a fixed needle screw ( 7), the tail end is larger than the head end. The threaded rod (1) is a cylindrical threaded rod, which is threadedly connected with the fixed hook (9), and the fixed rod nut (8), sliding sleeve (5), pressure regulating spring (4), pressure regulating wheel (3 ), fixed wheel nut (2). The solid rod nut (8) is threadedly connected with the threaded rod (1), and the sliding sleeve (5) is a cylindrical hollow sleeve, slidingly connected with the threaded rod (1), and the threaded rod (1) axially penetrates the sliding sleeve (5 ). The pressure regulating spring (4) is slidingly connected with the threaded rod (1), the threaded rod (1) axially penetrates through the pressure regulating spring (4), and the pressure regulating spring (4) is located between the sliding sleeve (5) and the pressure regulating wheel (3) Between, the pressure regulating wheel (3) is threadedly connected with the threaded rod (1), the pressure regulating wheel (3) is located between the pressure regulating spring (4) and the fixed wheel nut (2), and the fixed wheel nut (2) is used to fix Pressure regulating wheel (3).

The connection between the fixed hook (9) and the threaded rod (1) can be set as a fastening connection, and the fixed rod screw (10), the fixed needle screw (7), and the fixed rod screw (10) are set on the pipe wall at the end of the fixed hook. ) is threadedly connected with the pipe wall at the tail end of the fixing hook (9), the joint between the threaded rod (1) and the fixing hook (9) is set as a cylinder, and the corresponding part of the fixing rod screw (10) is set as a plane, and the fixing rod screw (10) When screwing in, the threaded rod (1) is tightly connected with the fixing hook (9).

The threaded rod (1) and the fixing hook (9) can be set as the threaded rod (1) with a hook shape, the head end is set as a hook shape or a hook shape with 4 prisms, the hook is compatible with the traction steel needle, and the head end is set as a fixing needle Nut (6) or needle-fixing screw (7), turn the needle-fixing nut (6) or needle-fixing screw (7) to fix the traction steel needle, and the tail end is a cylindrical threaded rod.

The traction steel needle is a cylindrical steel needle (38), a needled steel wire (39), or a cable (40).

The threaded rod (1) is connected with the threaded rod (1) by a rod clamp, and the rod clamp is fixed on the outer wall of the sliding sleeve (5). The rod clamp can be set as type I rod clamp, type II rod clamp, Type III rod clamp, IV type rod clamp and other forms.

Type I rod clamp is composed of collet A (11), collet B (13) and fixing nut (12). Compatible with the sliding sleeve (5) and the threaded rod (1), the tail end of the chuck A (11) is a cylindrical threaded rod, and a fixed nut (12) is arranged radially to fix the tail end of the chuck A (11) , The tail end of the chuck B (13) is a hollow cylindrical tube, the inner wall is provided with threads, and is threadedly connected with the threaded rod at the tail end of the chuck A (11).

Type II rod clamp consists of clamping block A (16), clamping block a (17), fastening screw (14), washer (15), one end of the arc surface of clamping block A (16), clamping block a (17) Set the round hole corresponding to the sliding sleeve (5) and the threaded rod (1) to pass through the clamp block, and set the round hole corresponding to the fastening screw (14) to pass through the clamp block at one end of the plane, and the plane end is separated by a gap of about 2mm. The direction of the two holes is vertical, the other side of the clamp block a (17) is threadedly connected with the head end of the fastening screw (14), and the corresponding surface of the clamp block A (16) and the head end of the fastening screw (14) is provided with the washer (15) and The tail end of the fastening screw (14) corresponds to the groove.

Type III rod clamp consists of clamping block A (19), clamping block a (20), clamping block B (21), clamping block b (23), fastening screw (25), gasket (24), tail nail ( 18), stretch out spring (22) to form. Clamp block A (19), clamp block a (20), clamp block B (21), and clamp block b (23) are all set to have one end as an arc surface and one end as a plane, and the center is set to match the fastening screw (25). Adaptable round hole, set thread in the center round hole of clip block A (19), threaded with the tail end of fastening screw (25). One end of the arc-shaped surface corresponding to clamp block A (19) and clamp block a (20), clamp block B (21) and clamp block b (23) is provided with an arc-shaped groove, and the sliding sleeve (5), threaded rod ( 1) Correspondingly, one end of the plane is provided with a corresponding convex surface and a concave surface, and the height of the convex surface is slightly greater than the depth of the concave surface. Clamp block a (20) and clamp block B (21) are separated by a stretch spring (22), the fastening screw (25) axially crosses the stretch spring (22), and the head end of the fastening screw (25) Make it hollow, threaded with the tail nail (18), the clamp block b (23) is provided with a groove corresponding to the gasket (24) at the corresponding position to the tail end of the fastening screw (25).

Type IV rod clamp is made up of central disc (28), solid rod clamp block (27), solid rod clamp block (29), fastening screw (26). The central disc (28) is disc-shaped, and the center is provided with a round hole compatible with the fastening screw (26), and an arc groove and 2 pillars are established on the periphery of the solid rod clamping block (27), (29). To fix the sliding sleeve (5), threaded rod (1), the center of the bottom solid rod clamp (29) is provided with a round hole compatible with the fastening screw (26), and is threadedly connected with the fastening screw (26).

The threaded rod (1) and the traction steel needle can be connected with a rod clamp, and the rod clamp is fixed on the outer wall of the sliding sleeve (5), and the rod clamp can be set as an I-type rod clamp and other forms.

I-type needle clamping block: consisting of clamping block A (31), clamping block a (32), clamping block B (33), clamping block b (35), gasket (36), fastening screw (37), and head nail (30), stretch out spring (34) and form. Clamp block A (31), clamp block a (32), clamp block B (33), clamp block b (35) are all set as an arc surface at one end, and a plane at one end, and the center is set to match the fastening screw (37). Corresponding to the circular hole, the central circular hole of clamp block A (31) is threadedly connected with the head end of the fastening screw (37). Clamp block A (31), clamp block a (32) are provided with grooves adapted to the sliding sleeve (5) and threaded rod (1) at one end of the corresponding curved surface of the clamp block a (32), and corresponding convex and concave surfaces are provided at one end of the plane. Clamp block B (33), clamp block b (35) corresponding surface arc surface one end is provided with traction steel pin (38) suitable groove, plane one end is provided with corresponding convex surface and concave surface, clamp block a (32), clamp Blocks B (33) are separated by stretching springs (34), the head ends of fastening screws (37) are set as hollow, and are threaded with head nails (30), and gaskets (36) are located on clamping block b (35). ) and the end of the fastening screw (37).

Any type of hook fixation system can be combined with any type of stick clip. Two elastic skin expander hook fixation systems and one stick clip are combined to form a skin traction system. One elastic skin expander can be used from 1 to It is composed of several skin traction systems, and different numbers of skin traction systems and 2 traction steel needles can be combined into different forms of elastic skin expanders.

Fig. 1 is the type I structure of the hook rod fixing system of the elastic skin expander, the threaded rod (1) is set as a hooked threaded rod, the head end is set as a hook, and a needle fixing nut (6) is set.

Fig. 2 is the type II structure of the elastic skin dilator hook rod fixing system, the threaded rod (1) is set as a hooked threaded rod (1), the head end is set as a hook shape with 4 prisms, and the head end is set with a needle-fixing screw (7 ).

Fig. 3 is the type III structure of the elastic skin dilator hook rod fixing system, the connection between the fixing hook (9) and the threaded rod (1) is set as a threaded connection, the connection is provided with a fixing rod nut (8), and the fixing hook (9) The head end is radially provided with fixing pin screws (7).

Fig. 4 is the type IV structure of the elastic skin dilator hook rod fixing system, the connection between the fixing hook (9) and the threaded rod (1) is set as a fastening connection, the connection between the fixing hook (9) and the tail end and the diameter of the tail end Arrange needle-fixing screw (7) and rod-fixing screw (10) to.

Fig. 5 is a kind of structure of elastic skin dilator skin traction system system, the tail end of fixed hook (9) is radially provided with through round hole or elongated hole, and threaded rod (1) is slidingly connected, and fixed rod nut (8) restricts For the movement of the fixed hook, the tail end is provided with a threaded hole through one side in the axial direction, and the fixed rod screw (10) is screwed into the threaded hole, and the threaded rod is tightly connected with the fixed hook, and another corresponding fixed hook is arranged above the threaded rod (9).

Fig. 6 is the I-type structure of the rod clamp, which is composed of chuck A (11), chuck B (13), and fixing nut (12), and A (11) and chuck B (13) are threaded.

Fig. 7 is the type II structure of the stick clamp, which is composed of clamp block A (16), clamp block a (17), fastening screw (14), washer (15), clamp block a (17) and fastening screw (14 ) head end threaded connection, clamp block A (16) and fastening screw (14) head end corresponding surface is provided with gasket (15) and fastening screw (14) tail end corresponding groove.

Fig. 8 is the type III structure of the rod clamp, consisting of clamping block A (19), clamping block a (20), clamping block B (21), clamping block b (23), fastening screw (25), gasket (24 ), end nail (18), and stretch out spring (22) to form. Clamp block A (19), clamp block a (20), clamp block B (21), clamp block b (23) are all set to have one end as an arc surface and one end as a plane, clamp block a (20), clamp block B (21) are separated by stretching springs (22), and clamping block b (23) is provided with a groove corresponding to the gasket (24) at the corresponding place of the fastening screw (25) tail end.

Fig. 9 is a rod clamp IV type structure, which is composed of a central disc (28), a solid rod clamp (27), a solid rod clamp (29), and a fastening screw (26). The central disc (28) is disc-shaped, and an arc groove and 2 pillars are established on the periphery of the solid rod clamping block (27), (29). ) are suitable for round holes, and are threaded with fastening screws (26).

Fig. 10 is the pin clamp structure, which consists of clamping block A (31), clamping block a (32), clamping block B (33), clamping block b (35), fastening screw (37), gasket (36), tail Nail (30), stretching spring (34) is formed; Clamp block A (31), clamp block a (32), clamp block B (33), clamp block b (35) are all set as an arc surface at one end, one end It is a plane, and one end of the arc-shaped surface corresponding to clamp block A (31) and clamp block a (32) is provided with an arc-shaped groove, which is compatible with the sliding sleeve (5), threaded rod (1), and clamp block B (33 ) and one end of the arc-shaped surface corresponding to the clamp block b (35) is provided with an arc-shaped groove, which is compatible with the traction steel needle, and the clamp block a (32) and the clamp block B (33) are connected by a spring (34) Separation, the head end of the fastening screw (37) is set as hollow, and is threadedly connected with the tail nail (30).

Fig. 11 is the cylindrical structure of the traction steel needle, which is a cylindrical steel needle with a pointed head end.

Fig. 12 is a steel wire structure with a needle for the traction steel needle, the head end is needle-shaped, and the tail end is a cylindrical steel wire.

Figure 13 shows the structure of the traction steel needle cable, which is cylindrical and consists of multiple steel wires.

Figure 14 shows the type I structure of the elastic skin expander, which consists of 3 skin traction systems and 2 traction steel needles (30), and 1 skin traction system consists of 2 type I hook rod fixing systems and 1 type I rod clamp composition.

Figure 15 shows the type II structure of the elastic skin expander, which is composed of 3 skin traction systems and 2 traction steel needles (30). The skin traction system is composed of 2 type II hook rod fixing systems and 1 type II rod clamp.

Fig. 16 The type III structure of the elastic skin expander is composed of 3 skin traction systems and 2 traction steel needles (30). The skin traction system is composed of 2 type III hook rod fixing systems and 1 type III rod clamp.

Fig. 17 is the type IV structure of the elastic skin dilator, which is composed of 3 skin traction systems and 2 traction steel needles (30). The skin traction system is composed of 2 type IV hook rod fixing systems and 1 type IV rod clamp.

Figure 18 shows the V-shaped structure of the elastic skin expander, which is composed of 3 skin traction systems and 2 traction steel needles (30). The skin traction system is composed of 1 V-shaped hook bar fixing system and 1 fixing hook (9).

Figure 19 shows the type VI structure of the elastic skin expander, which is composed of 3 skin traction systems and 2 traction steel needles (30). The skin traction system is composed of 1 v-shaped hook rod fixing system and 1 rod needle clip (45).

Claims (15)

1. A hook rod fixing system for skin traction clinically applied in orthopedics and plastic surgery, characterized in that, the hook rod fixing system includes: threaded rod, fixing hook, fixed wheel nut, sliding sleeve, pressure regulating spring , pressure regulating wheel, fixed needle nut or fixed needle screw; among them, The main part of the threaded rod is in the shape of a cylindrical rod and has an external thread. The fixed wheel nut, the pressure regulating wheel, the pressure regulating spring and the sliding sleeve are sequentially arranged on the upper part of the threaded rod from top to bottom. The pressure rollers are threadedly connected to the threaded rods respectively, and the fixed wheel nuts are used to fix the pressure regulating rollers; the sliding sleeve is a cylindrical hollow sleeve, and the threaded rod axially penetrates the sliding sleeve, and the sliding sleeve and the threaded rod are slidably connected The pressure regulating spring is sleeved on the threaded rod, the upper end of the pressure regulating spring abuts against the lower end surface of the pressure regulating wheel, and the lower end of the spring abuts against the upper end surface of the sliding sleeve; The fixing hook is arranged at the lower end of the threaded rod, the fixing hook extends downward along the threaded rod axially and forms a hook portion, and the needle fixing nut is arranged above the hook portion of the fixing hook or set screw. 2. The hook rod fixing system according to claim 1, wherein the fixing hook is integrally formed with the lower end of the threaded rod, the needle fixing nut is threadedly connected with the threaded rod, and the needle fixing nut is located at the above the hook portion of the fixing hook. 3. The hook rod fixing system according to claim 1, wherein the fixing hook is integrally formed with the lower end of the threaded rod, and the radial dimension of the connecting part of the fixing hook and the threaded rod is larger than the main body of the threaded rod For the radial dimension, a radially through threaded hole is also provided at the lower part of the connecting part, and the needle-fixing screw is screwed into the threaded hole. 4. The hook rod fixing system according to claim 1, wherein the fixing hook is detachably connected to the lower end of the threaded rod, the upper end of the fixing hook has a connecting portion, and the radial dimension of the connecting portion is larger than The main part of the threaded rod has a radial dimension, and the connecting part has a hollow cylindrical structure, and the inner wall of the cylindrical structure is provided with internal threads, and the threaded rod extends into the hollow cylindrical structure of the connecting part of the fixing hook and is connected with The fixed hook is threaded; the lower part of the connecting part of the fixed hook is also provided with a radially through threaded hole, and the fixed needle screw is screwed into the threaded hole; the threaded rod is also provided with a fixed rod nut, and the fixed rod nut and The threaded rod is threaded and located above the fixing hook connecting portion. 5. The hook bar fixing system according to claim 1, wherein the fixing hook is detachably connected to the lower end of the threaded rod, the upper end of the fixing hook has a connecting portion, and the radial dimension of the connecting portion is larger than The radial dimension of the main part of the threaded rod, and the connecting part has a hollow cylindrical structure, and the threaded rod extends into the hollow cylindrical structure of the connecting part of the fixed hook; A threaded hole through which the needle-fixing screw is screwed into; a threaded hole through which one side is located above the connecting part is located on the needle-fixing screw, and a thread-fixing screw is screwed into the threaded hole to fix the needle The hook is tightly connected with the threaded rod extending into the connecting portion of the fixed hook. 6. The hook bar fixing system according to any one of claims 1-5, characterized in that, the cross section of the hook portion of the fixing hook is quadrangular or circular. 7. A hook rod fixing system for skin traction clinically used in orthopedics and plastic surgery, characterized in that, the hook rod fixing system includes: threaded rod, fixing hook, fixed wheel nut, sliding sleeve, pressure regulating spring , pressure regulating wheel, fixed needle nut or fixed needle screw; among them, The main part of the threaded rod is in the shape of a cylindrical rod and has an external thread. The fixed wheel nut, the pressure regulating wheel, the pressure regulating spring and the sliding sleeve are sequentially arranged on the upper part of the threaded rod from top to bottom. The pressure rollers are threadedly connected to the threaded rods respectively, and the fixed wheel nuts are used to fix the pressure regulating rollers; the sliding sleeve is a cylindrical hollow sleeve, and the threaded rod axially penetrates the sliding sleeve, and the sliding sleeve and the threaded rod are slidably connected The pressure regulating spring is sleeved on the threaded rod, the upper end of the pressure regulating spring abuts against the lower end surface of the pressure regulating wheel, and the lower end of the spring abuts against the upper end surface of the sliding sleeve; The fixing hook is arranged at the lower part of the threaded rod, the fixing hook extends radially to one side along the threaded rod and forms a hook portion, and the fixing needle is arranged above the hook portion of the fixing hook Nut or fixed needle screw; the fixed hook has a connecting part, the radial dimension of the connecting part is larger than the radial dimension of the main part of the threaded rod, and the connecting part has a hollow cylindrical structure, and the threaded rod extends into the The hollow cylindrical structure of the connecting part of the fixing hook; a radially through threaded hole is also provided at the end of the connecting part close to the hook part, and the fixing screw is screwed into the threaded hole; the connecting part is far away from the hook The top of the part is also provided with a threaded hole penetrating on one side, and a fixed rod screw is screwed into the threaded hole, and the fixed hook is tightly connected with the threaded rod extending into the connecting part of the fixed hook. 8. The hook rod fixing system according to claim 7, characterized in that another fixing hook is arranged at intervals between the middle part of the threaded rod and the fixing hook arranged at the lower part of the threaded rod, and the structure of the fixing hook is the same as that arranged on the lower part of the threaded rod. The structure of the said fixing hook at the bottom of the threaded rod is the same. 9. The hook bar fixing system according to claim 7 or 8, characterized in that, the cross section of the hook portion of the fixing hook is quadrangular or circular. 10. A skin traction system for clinical application in orthopedics and plastic surgery, characterized in that it consists of two hook bar fixing systems as claimed in any one of claims 1-6 and one rod clip, wherein two The threaded rods of the hook rod fixing system are connected by the rod clamp, and the rod clamp is fixed on the outer wall of the sliding sleeve of the skin traction system. 11. A skin traction system for clinical application in orthopedics and plastic surgery, characterized in that it can be composed of a hook bar fixing system as claimed in claim 7 and a needle clip. 12. An elastic skin expander for clinical application in orthopedics and plastic surgery, characterized in that it is composed of several skin traction systems and traction steel needles as claimed in claim 10 or 11, and the needle fixing nut is rotated, Needle-fixing screws or needle clamps can fix the traction steel needle. 13 . The elastic skin expander according to claim 12 , wherein the traction steel needle is one or more of a cylindrical steel needle, a needled steel wire, or a cable. 14 . 14. The elastic skin expander according to claim 12, characterized in that the stick clamp can be set as one of type I stick clamp, type II stick clamp, type II stick clamp, and type IV stick clamp one or more forms; among them, Type I rod clamp is composed of collet A (11), collet B (13) and fixing nut (12). Compatible with the sliding sleeve (5) and the threaded rod (1), the tail end of the chuck A (11) is a cylindrical threaded rod, and a fixed nut (12) is arranged radially to fix the tail end of the chuck A (11) , the tail end of the chuck B (13) is a hollow cylindrical tube, the inner wall is provided with threads, and is threadedly connected with the threaded rod at the tail end of the chuck A (11); Type II rod clamp consists of clamping block A (16), clamping block a (17), fastening screw (14), washer (15), one end of the arc surface of clamping block A (16), clamping block a (17) Set the round hole corresponding to the sliding sleeve (5) and the threaded rod (1) to pass through the clamp block, and set the round hole corresponding to the fastening screw (14) to pass through the clamp block at one end of the plane, and the plane end is separated by a gap of about 2 mm. The direction of the two holes is vertical, the other side of the clamp block a (17) is threadedly connected with the head end of the fastening screw (14), and the corresponding surface of the clamp block A (16) and the head end of the fastening screw (14) is provided with the washer (15) and the fastening screw. Corresponding grooves at the tail ends of the fastening screws (14); The llI type stick clamp consists of clamp block A (19), clamp block a (20), clamp block B (21), clamp block b (23), fastening screw (25), gasket (24), tail nail ( 18), strut spring (22) is formed; Clamp block A (19), clamp block a (20), clamp block B (21), clamp block b (23) are all set as an arc surface at one end, and a plane at one end , the center is provided with a round hole suitable for the fastening screw (25), and the center round hole of the clamp block A (19) is provided with a thread, which is threadedly connected with the tail end of the fastening screw (25); the clamp block A (19) is connected with the clamp block a(20), clamping block B(21) and clamping block b(23) are provided with an arc-shaped groove at one end of the corresponding arc-shaped surface, which is compatible with the sliding sleeve (5) and threaded rod (1), and one end of the plane is provided with a phase Corresponding convex surface and concave surface, the height of the convex surface is slightly higher than the depth of the concave surface; the clamp block a (20) and the clamp block B (21) are separated by a spring (22), and the fastening screw (25) axially crosses the brace Open the spring (22), the head end of the fastening screw (25) is set as hollow, and is threadedly connected with the tail nail (18), and the position corresponding to the tail end of the fastening screw (25) and the clamping block b (23) is provided with the gasket ( 24) Corresponding grooves; Type IV rod clamp is made up of central disc (28), solid rod clamp block A (27), solid rod clamp block B (29), fastening screw (26); central disc (28) is disc shape, The center is provided with a round hole suitable for the fastening screw (26), and an arc-shaped groove and 2 pillars are provided around the solid rod clamp block A (27) and the solid rod clamp block B (29) for fixing the sliding sleeve (5), threaded rod (1), the center of the bottom solid rod clamping block B (29) is established with the round hole suitable for the fastening screw (26), and is threadedly connected with the fastening screw (26). 15. The elastic skin expander according to claim 12, characterized in that, the needle clip can be set as consisting of clamping block A (31), clamping block a (32), clamping block B (33), clamping block b (35) ), fastening screws (37), gaskets (36), tail nails (30), and expansion springs (34); clamping block A (31), clamping block a (32), clamping block B (33), Clamp block b (35) is all set as one end is arc-shaped surface, and one end is plane, and the center is provided with the circular hole that is adapted to fastening screw (37), and clamp block A (31) central circular hole is provided with screw thread, and fastening The screw (37) tail end is threaded; clamp block A (31) and clamp block a (32) are provided with an arc-shaped groove at one end of the corresponding arc-shaped surface, which is compatible with the sliding sleeve (5), threaded rod (1) and , clamping block B (33) and clamping block b (35) are provided with an arc-shaped groove at one end of the corresponding arc surface, which is compatible with the traction steel needle, clamping block A (31), clamping block a (32), clamping block B (33), one end of clamp block b (35) plane is provided with corresponding convex surface and concave surface, and the height of convex surface is slightly more than concave surface depth; Between clamp block a (32), clamp block B (33) to strut spring (34) Separated, the fastening screw (37) axially traverses the stretching spring (34), the head end of the fastening screw (37) is set as hollow, and is threadedly connected with the tail nail (30), and the clamping block b (35) is connected with the fastening A groove corresponding to the washer (36) is provided at the corresponding position of the tail end of the screw (37).