Combined traction frame

Abstract

The utility model discloses a combined traction frame relates to operation traction fixing frame technical field, include: the support frame that a plurality of frame poles and connecting piece enclose and form, the surface installation of frame pole connects the clamp, and the support frame is connected and fixed with external device through the clamp, at least one overage frame, and the overage frame is installed on the support frame in the form of hinged, and the surface along the arc shape trend equidistance distribution several skin hooks of the skin of the surgical field, the hook of skin hook points to the arc center of overage frame, the U shape frame is installed on the support frame, and the object of U shape frame is connected round frame in the form of hinged, and the U shape frame and round frame hinged form closed structure, the snake shape arm is installed on the frame pole and / or round frame.

Description

Technical Field

[0001] This utility model relates to the field of surgical traction fixation frame technology, specifically a combined traction frame. Background Technology

[0002] Retractors, also known as retractors, are used to retract tissues and expose the surgical area for exploration and manipulation. They can be divided into handheld retractors and automatic retractors. Currently, manual flexible shaft retractors are widely used in surgical procedures. Furthermore, endoscopic systems such as neuroendoscopy, sinus endoscopy, thoracoscopy, laparoscopy, and gynecological endoscopy are frequently required. To ensure the stability and flexibility of holding the endoscope, a serpentine arm endoscopic system is typically used.

[0003] Depending on the progress and type of surgery, some surgeries are only for the brain, while others require surgery on different parts of the limbs. Therefore, depending on the surgical environment, retractors and serpentine arms need to be installed in different positions. Thus, it is necessary to provide a combined traction frame that can freely combine transition frames, U-shaped frames, round frames, skin hooks, and serpentine arms to improve convenience and versatility. Utility Model Content

[0004] The purpose of this utility model is to provide a combined traction frame to address the shortcomings of existing technologies.

[0005] The combined traction frame includes:

[0006] A support frame is formed by several frame poles and connectors. Connecting clips are installed on the surface of the frame poles, and the support frame is connected and fixed to external equipment through the connecting clips.

[0007] At least one transition frame is hinged to the support frame, and a number of skin retractors for retracting the skin at the surgical field are evenly distributed on the surface along an arc, with the hooks of the skin retractors pointing towards the center of the arc of the transition frame.

[0008] A U-shaped frame is installed on a support frame. The objects of the U-shaped frame are connected to the circular frame by a hinge. The U-shaped frame and the circular frame are hinged to form a closed structure.

[0009] A serpentine arm, mounted on a frame pole and / or a circular frame.

[0010] Furthermore, two U-shaped clamps are installed at the ends of the frame pole. The U-shaped clamps are semi-circular U-shaped retaining rings. A hinge lug is provided on the side wall facing away from the arc surface. The two U-shaped clamps can be combined into a full-circle retaining ring by bolts and installed on the ends of the frame pole. The ends of the transition frame are fixed by hinge to the hinge lug above the U-shaped clamps.

[0011] Furthermore, the transition frame includes an arc-shaped plate, a hinge ear, quick-change bolt holes, and quick-change bolts. The arc-shaped plate is set in a semi-circular strip shape. The two ends of the arc-shaped plate are equipped with hinge ears. The hinges are held together by a pin through the hinge ears and the hinge ears above the U-shaped clamp. Several quick-change bolt holes are equidistantly distributed along the arc. Quick-change bolts are installed on the outside of the quick-change bolt holes. The quick-change bolts and quick-change bolt holes are threaded together. At least one pull hook is fixed to the outside of the arc-shaped plate by a quick-change bolt.

[0012] Furthermore, the number of transition frames is set to two, the two transition frames are symmetrically staggered, and the two hinge ears are distributed at intervals and connected to the first transition ear above the U-shaped clamp by pins.

[0013] Furthermore, the connecting clamp includes a first collar, a second collar, a threaded tube, a ball-head connecting rod, and a first lock nut. The first collar is fitted onto the frame rod, and the second collar is fitted onto the round rod of the external operating table. One end of the first collar is fixed to the threaded tube, and one side of the second collar is fixedly connected to the ball-head connecting rod. A hemispherical groove is formed at the position of the ball head of the ball-head connecting rod, and the ball head of the ball-head connecting rod is inserted into the hemispherical groove of the threaded tube. Tightening the first lock nut completes the connection and fixation of the first collar and the second collar.

[0014] Furthermore, the U-shaped frame includes an arc-shaped plate two, a universal seat one, and a hinge seat. The arc-shaped plate two is semi-circular, and universal seats one are installed at both ends. The top of the universal seat one is connected to a hinge seat with a hinge hole.

[0015] Furthermore, the circular frame includes an arc-shaped plate three, pins, clamping walls, and fixing holes. The arc-shaped plate three is in the shape of a semi-circular arc, and pins are installed at both ends corresponding to the positions of the hinge seats. The outer side of the arc wall of the arc-shaped plate three is cut into a bevel to form a clamping wall that facilitates clamping the serpentine arm. Several fixing holes are evenly distributed along the bevel of the clamping wall. Fixing bolts pass through the fixing holes and the serpentine arm to fix the serpentine arm to the outer side of the arc-shaped plate three.

[0016] Furthermore, it also includes a bent rod and a connecting rod assembly. The bent rod is a round tube bent at ninety degrees, with one end fixed to the frame rod by a connecting clamp, and the other end fixed by a connecting rod assembly and a U-shaped frame.

[0017] The linkage assembly includes a universal joint second, a ball-and-socket connecting post, a ball-and-socket connecting rod, and a lock nut second. The lower part of the universal joint second is provided with a set screw hole. One end of the bent rod passes through the set screw hole at the lower part of the universal joint second and is fixed by a set screw. The ball-and-socket connecting post is fixedly installed on the outer side wall of the U-shaped frame and is threaded on the outer side. The lock nut second is provided with an internal thread that matches it. The ball-and-socket connecting post and the lock nut second are adapted by the thread. One end of the ball-and-socket connecting rod is inserted into the ball-and-socket connecting post and the lock nut second is tightened to complete the assembly. The other end of the ball-and-socket connecting rod is inserted into the upper part of the universal joint second and fixed.

[0018] Furthermore, the universal seat II is formed by two semi-circular blocks symmetrically distributed above the columnar block and integrally cast. The columnar block has a hinged threaded hole II in the middle to facilitate the passage of the bent rod. The set screw hole at the bottom of the universal seat II is laterally connected to the hinged threaded hole II. The set screw passes through the set screw hole to fix the bent rod. A connecting groove is formed between the two semi-circular blocks. Both semi-circular blocks have a hinged threaded hole I.

[0019] Furthermore, the ball-and-socket connecting rod includes a ball head and a square plate end formed by integral casting. The ball head is embedded in the hemispherical groove of the ball-and-socket connecting post. The square plate end is strip-shaped, and the end opposite to the ball head is set in a semi-arc shape and embedded in the connecting groove. The hinge bolt passes through the connecting groove, the connecting hole, and the connecting groove in sequence.

[0020] The advantages of this utility model compared with the prior art are as follows:

[0021] 1. This method uses the cooperation between skin retractors on the support frame and snake arms. Multiple skin retractors are installed above the transition frame, and two skin retractors are symmetrically combined to form a circular structure. This allows the skin in the surgical field to be retracted by multiple skin retractors. The snake arms are installed on the support frame, and through the swinging of the snake arms, some surgical instruments, such as neuroendoscopy, sinus endoscopy, thoracoscopy, laparoscopy, gynecological endoscopy, etc., can be clamped, which helps to free the surgeon's hands and improve surgical efficiency.

[0022] 2. This design allows for free combination of the transition frame, U-shaped frame, and round frame. Depending on the actual needs during surgery, the serpentine arm can be directly mounted on the frame pole for convenient operator access. Alternatively, the serpentine arm can be mounted on the round frame, which in turn is mounted on the frame pole, thus completing the assembly. Furthermore, depending on the surgical requirements, only the transition frame and skin retractor can be installed without the serpentine arm. Conversely, the transition frame can be omitted entirely, with only the serpentine arm installed. This flexible combination of components enhances convenience and versatility.

[0023] 3. This solution uses a linkage assembly consisting of a universal joint and a ball joint, which reduces the rotation center distance and improves maneuverability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the combined traction frame applicable to Embodiment 1 of this solution;

[0025] Figure 2 This is a structural diagram of the support frame composed of the frame poles and connectors applicable to Embodiment 1 of this solution;

[0026] Figure 3 This is a schematic diagram of the connecting clip proposed in Embodiment 1 of this solution;

[0027] Figure 4This is a schematic diagram of the structure applicable to the two transition frames with relative distribution as proposed in Embodiment 1 of this scheme;

[0028] Figure 5 A schematic diagram of the transition frame proposed in Embodiment 1 of this solution;

[0029] Figure 6 This is a structural schematic diagram of the combined traction frame proposed in Embodiment 2 of this scheme;

[0030] Figure 7 This is a structural diagram illustrating the U-shaped frame connected to the bent rod via a connecting rod assembly, as proposed in Embodiment 2 of this scheme.

[0031] Figure 8 This is a schematic diagram of the universal joint and ball-and-socket connecting rod proposed in Embodiment 2 of this solution;

[0032] Figure 9 This is a schematic diagram of the U-shaped frame proposed in Embodiment 2 of this solution.

[0033] Figure 10 This is a schematic diagram of the circular frame structure proposed in Embodiment 2 of this scheme.

[0034] Figure 11 This is a schematic diagram of the structure for installing a serpentine arm on a circular frame as proposed in Embodiment 2 of this scheme.

[0035] Figure 12 This is a structural diagram illustrating the assembly of the U-shaped frame and the round frame as proposed in Embodiment 2 of this scheme.

[0036] Figure 13 This is a schematic diagram of the structure for directly mounting the U-shaped frame and round frame on the support rod, as proposed in Embodiment 3 of this scheme.

[0037] Figure 14 This is an enlarged schematic diagram of the U-shaped frame and round frame directly mounted on the support pole, as proposed in Embodiment 3 of this scheme.

[0038] Reference numerals: 1. Frame pole; 2. Connector; 3. Connecting clamp; 4. Transition frame; 5. U-shaped frame; 6. Round frame; 7. Leather hook; 8. Snake arm; 9. Bent rod; 10. Linkage assembly; 11. U-shaped clamp;

[0039] 31. Collar 1; 32. Collar 2; 33. Threaded pipe; 34. Ball joint connecting rod; 35. Lock nut 1;

[0040] 41. Curved plate one; 42. Hinge lug two; 43. Bolt hole; 44. Quick-change bolt;

[0041] 51. Arc-shaped plate two; 52. Universal joint one; 53. Hinge joint;

[0042] 61. Arc-shaped plate three; 62. Pin; 63. Clamping wall; 64. Fixing hole;

[0043] 101. Universal joint seat 2; 102. Ball socket connecting post; 103. Ball socket connecting rod; 104. Lock nut 2;

[0044] 1011. Semicircular block; 1012. Columnar block; 1013. Connecting groove; 1014. Hinge threaded hole one; 1015. Hinge threaded hole two;

[0045] 1031, Ball head; 1032, Square plate end; 1033, Connecting hole three. Detailed Implementation

[0046] Example 1

[0047] This embodiment provides a combined traction frame, as shown in the instruction manual. Figure 1-5 As shown, the structure includes a support frame, a transition frame 4, a leather hook 7, and a serpentine arm 8. The support frame includes a closed structure composed of several frame rods 1, connectors 2, and connecting clips 3. The frame rods 1 are round rods. Two frame rods 1 are assembled by connectors 2 or connecting clips 3, thereby assembling several frame rods 1 into a whole. Each connector 2 has two through holes for the frame rods 1 to pass through, so that two frame rods 1 can be assembled together by connectors 2. The connecting clips 3 are installed on the frame rods 1 and the frame rods 1 are fixed to any supporting object by connecting clips 3, including but not limited to operating tables, operating chairs, tables, etc. Frame rods 1 can also be assembled with each other by connecting clips 3. In this embodiment, several frame rods 1 are assembled into a whole support frame structure by connectors 2.

[0048] In this embodiment, two transition frames 4 are provided, and the two transition frames 4 are symmetrically mounted on the frame rod 1 in a hinged manner. Please refer to the appendix of the instruction manual. Figure 4-5 Specifically, two U-shaped clips 11 are installed on the ends of the two parallel support rods 1 respectively. The U-shaped clips 11 are U-shaped semi-circular retaining rings. A hinge ear is provided on the side wall facing away from the arc surface. The two U-shaped clips 11 can be combined into a full circle retaining ring by bolts and installed on the end of the support rod 1. The end of the transition frame 4 is fixed by hinge to the hinge ear above the U-shaped clips 11. Several skin hooks 7 are also installed above the transition frame 4. The skin hooks 7 are used to pull open the skin at the surgical field position of the patient to facilitate the surgical operation.

[0049] Please refer to the instruction manual attached. Figure 3The connecting clip 3 in this embodiment is described in detail below: The connecting clip 3 includes a first collar 31, a second collar 32, a threaded tube 33, a ball-head connecting rod 34, and a first lock nut 35. The first collar 31 and the second collar 32 are respectively fitted onto different structures. For example, the first collar 31 is fitted onto the frame rod 1, while the second collar 32 is fitted onto the round rod of the operating table, thereby fixing the support frame mechanism assembled from the frame rod 1 and the connecting piece 2 onto the operating table, so as to facilitate the doctor to perform surgical operations on the patient. One end of the first collar 31 is fixed with the threaded tube 33, and one side of the second collar 32 is fixedly connected to the ball-head connecting rod 34. The threaded tube 33 has a hemispherical groove at the position corresponding to the ball head of the ball-head connecting rod 34. The ball head part of the ball-head connecting rod 34 is inserted into the hemispherical groove, and then the first lock nut 35 is tightened to complete the connection and fixation of the first collar 31 and the second collar 32.

[0050] Please refer to the instruction manual attached. Figure 5 The transition frame 4 in this embodiment is described in detail as follows: The transition frame 4 includes an arc-shaped plate 41, a hinge ear 42, quick-change bolt holes 43, and quick-change bolts 44. The arc-shaped plate 41 is set in a semi-circular strip shape. The hinge ear 42 is installed at both ends of the arc-shaped plate 41. The hinge is held in place by a pin through the hinge ear 42 and the hinge ear 1 above the U-shaped clamp 11. Several quick-change bolt holes 43 are arranged in a semi-circular array along the arc direction of the arc-shaped plate 41 with the arc center as the center. A quick-change bolt 44 is installed on the outside of each quick-change bolt hole 43. The quick-change bolt 44 and the quick-change bolt hole 43 are threaded together. The skin pull hook 7 is fixed to the outside of the arc-shaped plate 41 by the quick-change bolt 44. Only one skin pull hook 7 can be installed, or multiple skin pull hooks can be installed, depending on the actual needs during the operation. The hook end of the skin pull hook 7 faces the inside of the arc-shaped plate 41 to pull the skin of the surgical site.

[0051] In this embodiment, there are two transition frames 4, which are installed in a nearly symmetrical manner. Please refer to the appendix of the instruction manual for details. Figure 4 The two opposing transition frames 4 have their corresponding hinge ears 42 spaced apart and fixed to the junction ear 1 above the U-shaped clamp 11 by pins, so that the two transition frames 4 can be arranged into a circle when unfolded and placed above the surgical opening. Then, the skin retractor 7 installed on the transition frame 4 is used to pull open the skin of the surgical field, which facilitates the surgical operation.

[0052] Continue to refer to the instruction manual appendix Figure 1In this embodiment, the snake arm 8 is directly mounted on the support rod 1. The snake arm 8 can swing in all directions to hold some surgical instruments, such as neuroendoscopy, sinus endoscopy, thoracoscopy, laparoscopy, gynecological endoscopy, etc., to help free the surgeon's hands and improve surgical efficiency. The specific structure of the snake arm 8 can be referred to the applicant's prior application for a neurosurgical snake-shaped endoscope holding arm, publication number CN111012525B, which is prior art, so it will not be described in detail here.

[0053] Example 2

[0054] This embodiment, based on embodiment 1, also includes a U-shaped frame 5, a circular frame 6, a bent rod 9, and a connecting rod assembly 10. Please refer to the appendix of the instruction manual. Figure 6-12 In this embodiment, the U-shaped frame 5 and the circular frame 6 can be assembled into an approximately circular enclosed structure. The bent rod 9 is a circular tube bent at ninety degrees. One end is fixed to the frame rod 1 by the connector 2 or the connecting clip 3. In this embodiment, the bent rod 9 is fixed to the frame rod 1 by the connector 2, and the other end is fixed to the U-shaped frame 5 by the connecting rod assembly 10. Both the U-shaped frame 5 and the circular frame 6 are set as semi-circular strips. The two ends of the U-shaped frame 5 are respectively hinged to the two ends of the circular frame 6 to form an approximately circular structure. By adjusting the position of the connecting rod assembly 10, the angle of the U-shaped frame 5 can be changed. At the same time, adjusting the angle of the circular frame 6 and the U-shaped frame 5 can also change the shape of the enclosed structure, from a semi-circle to a circle. In this embodiment, the U-shaped frame 5 and the circular frame 6 are used to form an approximately circular structure.

[0055] Please refer to the instruction manual attached. Figure 7 The linkage assembly 10 in this embodiment is described in detail below: The linkage assembly 10 includes a universal joint 101, a ball joint connecting post 102, a ball joint connecting rod 103, and a lock nut 104. The universal joint 101 has a set screw hole at its lower part. One end of the bent rod 9 passes through the set screw hole at the lower part of the universal joint 101 and is fixed to the other end by a set screw. The ball joint connecting post 102 is fixedly installed on the protruding side wall of the U-shaped frame 5, and has a hemispherical groove on its inner side to accommodate the ball head, and a thread on its outer side. The lock nut 104 has an internal thread that matches it. The ball joint connecting post 102 and the lock nut 104... 04. Through threaded adaptation, one end of the ball socket connecting rod 103 is inserted into the ball socket connecting post 102 and the locking nut 104 is tightened to complete the assembly. The other end of the ball socket connecting rod 103 is inserted into the upper part of the universal seat 101 and fixed to complete the assembly of the bent rod 9. Thus, the U-shaped frame 5 and the bent rod 9 are assembled into a whole. The relative angle between the ball socket connecting rod 103 and the universal seat 101 is adjusted and fixed by the hinge bolt to complete the adjustment of the position of the U-shaped frame 5. The U-shaped frame 5 extends from the support frame structure and is further connected to the round frame 6. The round frame 6 can also be equipped with a skin hook 7 and a snake arm 8 to facilitate surgery.

[0056] Please refer to the instruction manual attached. Figure 8 The structure of the ball joint connecting rod 103 and the universal joint 101 in this embodiment is further explained as follows: The universal joint 101 is formed by two semi-circular blocks 1011 symmetrically distributed above the columnar block 1012 and integrally cast. The columnar block 1012 has a hinged threaded hole 1015 in the middle to facilitate the passage of the bent rod 9. The set screw hole is laterally connected to the hinged threaded hole 1015. When the bent rod 9 passes through the hinged threaded hole 1015, the set screw passes through the set screw hole to fix the bent rod 9, thus completing the limiting and fixing of the bent rod 9. A connecting groove 1013 is formed between the two semi-circular blocks 1011. Both semi-circular blocks 1011 have a hinged threaded hole 1014.

[0057] The ball-and-socket connecting rod 103 includes a ball head 1031 and a square plate end 1032 formed by integral casting. The ball head 1031 is embedded in the hemispherical groove of the ball-and-socket connecting post 102. The end of the square plate end 1032 facing away from the ball head 1031 is set in a semi-arc shape. The square plate end 1032 is strip-shaped and can be embedded in the connecting groove 1013. At this time, the connecting hole 1033 is aligned with the hinge threaded holes 1014 on both sides and fixed by hinge bolts. The hinge bolts pass through the connecting groove 1013, the connecting hole 1033, and the connecting groove 1013 in sequence.

[0058] After the ball joint connecting rod 103 and universal joint 101 are assembled, the overall assembly of the bent rod 9 is further completed. During the assembly process, the angle of the connecting hole 1033 in the connecting groove 1013 is changed to adjust the angle of the U-shaped frame 5 and the bent rod 9 on the same vertical plane. Since the ball joint connecting post 102 and the U-shaped frame 5 are on the same plane, the relative position of the horizontal plane where the U-shaped frame 5 is located and the ball head 1031 can be changed by rotating the ball joint connecting post 102, thereby completing the various angles of the U-shaped frame 5 on the bent rod 9 to cooperate with the surgeon's operation.

[0059] Continue to refer to the instruction manual appendix Figure 9 The U-shaped frame 5 in this embodiment is described in detail below: The U-shaped frame 5 includes an arc plate 51, a universal seat 52, and a hinge seat 53. The arc plate 51 is semi-circular, and universal seats 52 are installed at both ends. The top of the universal seat 52 is connected to the hinge seat 53 with a hinge hole, which facilitates the assembly of the U-shaped frame 5 and the round frame 6. The surface of the universal seat 52 is also provided with mounting holes to facilitate connection with the connector 2. The specific method is described in embodiment 3.

[0060] Continue to refer to the instruction manual appendix Figure 10The circular frame 6 in this embodiment is described in detail as follows: The circular frame 6 includes an arc-shaped plate 61, a pin 62, a clamping wall 63, and a fixing hole 64. The arc-shaped plate 61 is in the shape of a semi-circular arc, and the pins 62 are installed at both ends corresponding to the positions of the hinge seats 53. The outer side of the arc wall of the arc-shaped plate 61 is cut into a bevel to form the clamping wall 63, so as to clamp the serpentine arm 8. For details, please refer to the appendix of the instruction manual. Figure 11 It is worth noting that the structure at the connection between the serpentine arm 8 and the arc plate 3 61 in this embodiment is an approximately inverted trapezoidal block, with the inner side adapted to the surface of the arc plate 3 61. This is because experiments have shown that clamping with a certain slope is more stable. The remaining structure is the same as that in the applicant's prior application: a neurosurgical serpentine endoscope arm, publication number CN111012525B, so it will not be described in detail here. Several fixing holes 64 are evenly distributed along the slope of the clamping wall 63. The fixing bolts pass through the fixing holes 64 and the serpentine arm 8, thereby installing the serpentine arm 8 to the outside of the arc plate 3 61.

[0061] Continue to refer to the instruction manual appendix Figure 12 The assembly process of the U-shaped frame 5 and the circular frame 6 in this embodiment is described in detail: the U-shaped frame 5 and the circular frame 6 are arranged opposite each other, wherein the pin 62 at the end of the circular frame 6 passes through the hinge seat 53 at the end of the U-shaped frame 5, thereby completing the hinge assembly of the arc plate three 61 and the arc plate two 51. By adjusting the angle formed by the circular frame 6 and the U-shaped frame 5, the area enclosed by the two can be adjusted.

[0062] Example 3

[0063] Based on Embodiment 2, this embodiment also provides a method for mounting the U-shaped frame 5 and the circular frame 6 on the support frame. Please refer to the appendix of the instruction manual for details. Figure 13-14 In this embodiment, the U-shaped frame 5 is directly installed on the frame rod 1 via the connector 2, without the bending rod 9. Of course, the connector 3 can also be used to install the U-shaped frame 5 to the frame rod 1. In this embodiment, the connector 2 is used as an example, and its installation process is as follows:

[0064] Please refer to the instruction manual attached. Figure 14 Since the surface of the universal joint 52 has mounting holes, the universal joint 52 and one through hole of the connector 2 can be installed through a transition piece. The transition piece is composed of a small cylinder and a large cylinder with their opposite sides coaxially attached and connected. The small cylinder is inserted into the mounting hole on the surface of the universal joint 52, and the large cylinder is inserted into the through hole of the connector 2, thereby connecting the universal joint 52 and the connector 2. The other through hole of the connector 2 passes through the frame rod 1 and is fixed by a set screw. Finally, the U-shaped frame 5 is fixed on the support frame structure composed of the frame rod 1 for use. At this time, the installation method of the round frame 6 and the U-shaped frame 5 is the same as that of Embodiment 2, so it will not be described in detail here.

[0065] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0066] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0067] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A combination traction frame, characterised in that, include: A support frame is formed by several support poles (1) and connectors (2). Connecting clips (3) are installed on the surface of the support poles (1). The support frame is connected and fixed to external equipment through the connecting clips (3). At least one transition frame (4) is mounted on the support frame in a hinged manner. Several skin retractors (7) are distributed at equal intervals along the arc direction on the surface to pull the skin at the surgical field. The hooks of the skin retractors (7) point to the center of the arc of the transition frame (4). U-shaped frame (5) is installed on support frame. The object of U-shaped frame (5) is connected to round frame (6) by hinge. U-shaped frame (5) and round frame (6) are hinged to form a closed structure. A serpentine arm (8) is mounted on a support pole (1) and / or a circular frame (6).

2. The combination traction frame of claim 1, wherein: Two U-shaped clamps (11) are installed at the end of the frame pole (1). The U-shaped clamp (11) is a U-shaped semi-circular retaining ring. A hinge ear is provided on the side wall facing away from the arc surface. The two U-shaped clamps (11) can be combined into a full circle retaining ring by bolts and installed on the end of the frame pole (1). The end of the transition frame (4) is fixed by hinge on the hinge ear above the U-shaped clamp (11).

3. The combination traction frame of claim 2, wherein: The transition frame (4) includes an arc plate (41), a hinge ear (42), quick-change bolt holes (43) and quick-change bolts (44). The arc plate (41) is set in a semi-circular strip shape. The two ends of the arc plate (41) are equipped with hinge ears (42). The hinge ears (42) and the hinge ears above the U-shaped clamp (11) are kept hinged by a pin. Several quick-change bolt holes (43) are distributed at equal intervals along the arc. Quick-change bolts (44) are installed on the outside of the quick-change bolt holes (43). The quick-change bolts (44) and quick-change bolt holes (43) are threaded together. At least one pull hook (7) is fixed to the outside of the arc plate (41) by the quick-change bolts (44).

4. The combination traction frame of claim 3, wherein: The number of transition frames (4) is set to two, the two transition frames (4) are symmetrically staggered, and the two hinge ears (42) are distributed at intervals and connected to the first junction ear above the U-shaped clamp (11) by pin.

5. The combination traction frame of claim 1, wherein: The connecting clamp (3) includes a collar one (31), a collar two (32), a threaded tube (33), a ball head connecting rod (34), and a lock nut one (35). The collar one (31) is fitted onto the frame rod (1), and the collar two (32) is fitted onto the round rod of the external operating table. One end of the collar one (31) is fixed to the threaded tube (33), and one side of the collar two (32) is fixedly connected to the ball head connecting rod (34). The threaded tube (33) has a hemispherical groove at the position corresponding to the ball head of the ball head connecting rod (34). The ball head part of the ball head connecting rod (34) is inserted into the hemispherical groove of the threaded tube (33). Tightening the lock nut one (35) completes the connection and fixation of the collar one (31) and the collar two (32).

6. The combination traction frame of claim 1, wherein: The U-shaped frame (5) includes an arc plate two (51), a universal seat one (52) and a hinge seat (53). The arc plate two (51) is semi-circular and universal seat one (52) is installed at both ends. The top of the universal seat one (52) is connected to the hinge seat (53) with a hinge hole.

7. The combination traction frame of claim 6, wherein: The circular frame (6) includes an arc plate three (61), a pin (62), a clamping wall (63), and a fixing hole (64). The arc plate three (61) is a semi-circular arc. Pins (62) are installed at both ends corresponding to the positions of the hinge seat (53). The outer side of the arc wall of the arc plate three (61) is cut into a bevel to form a clamping wall (63) that facilitates clamping the snake arm (8). Several fixing holes (64) are distributed at equal intervals along the bevel of the clamping wall (63). Fixing bolts pass through the fixing holes (64) and the snake arm (8) to fix the snake arm (8) to the outer side of the arc plate three (61).

8. The combination distraction frame of any of claims 6-7, wherein: It also includes a bent rod (9) and a connecting rod assembly (10). The bent rod (9) is a round tube bent at ninety degrees. One end is fixed to the frame rod (1) by a connecting clamp (3), and the other end is fixed by the connecting rod assembly (10) and the U-shaped frame (5). The connecting rod assembly (10) includes a universal seat (101), a ball joint connecting post (102), a ball joint connecting rod (103), and a lock nut (104). The lower part of the universal seat (101) is provided with a set screw hole. One end of the bent rod (9) passes through the set screw hole at the lower part of the universal seat (101) and is fixed by a set screw. The ball joint connecting post (102) is fixedly installed on the outer side wall of the U-shaped frame (5) and is provided with a thread on the outer side. The lock nut (104) is provided with an internal thread that matches it. The ball joint connecting post (102) and the lock nut (104) are matched by the thread. One end of the ball joint connecting rod (103) is inserted into the ball joint connecting post (102) and the lock nut (104) is tightened to complete the assembly. The other end of the ball joint connecting rod (103) is inserted into the upper part of the universal seat (101) and fixed.

9. The combination traction frame of claim 8, wherein: The universal seat 2 (101) is formed by two semi-circular blocks (1011) symmetrically distributed above the columnar block (1012) and integrally cast. The columnar block (1012) has a hinged threaded hole 2 (1015) in the middle to facilitate the passage of the bent rod (9). The set screw hole at the bottom of the universal seat 2 (101) is laterally connected to the hinged threaded hole 2 (1015). The set screw passes through the set screw hole to fix the bent rod (9). A connecting groove (1013) is formed between the two semi-circular blocks (1011). Both semi-circular blocks (1011) have a hinged threaded hole 1 (1014).

10. The combination traction frame of claim 9, wherein: The ball-and-socket connecting rod (103) includes an integrally cast ball head (1031) and a square plate end (1032). The ball head (1031) is embedded in the hemispherical groove of the ball-and-socket connecting post (102). The square plate end (1032) is strip-shaped, and the end opposite to the ball head (1031) is set in a semi-arc shape and embedded in the connecting groove (1013). The hinge bolt passes through the connecting groove (1013), the connecting hole three (1033), and the connecting groove (1013) in sequence.

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