A traction lifting structure for a balance pull hook device

Abstract

The utility model discloses a kind of traction pull structure for balance pull hook device. It includes lifting seat and hook, lifting seat is equipped with lifting rod guide hole, lifting rod is inserted in lifting rod guide hole and is slidably connected with its upper and lower, the hook is installed in the bottom of lifting rod and with its detachable connection, lifting rod is provided with rack, lifting seat is installed with rack transmission assembly connected with lifting rod, the surface of lifting seat is also installed with limit sheet, the limit sheet is placed in the side of rack and is rotatably connected with lifting seat, the limit sheet is inserted with the tooth groove of rack. The utility model has the beneficial effects of: improve the fixing effect of lifting rod;High installation stability;It improves the structural strength of hook, enhances installation stability;Hook can be freely selected installation height on lifting rod;It improves the pull success rate;The selectability of pull bar is high.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a traction and lifting structure for a balance hook device. Background Technology

[0002] The minimally invasive resection technique for mediastinal tumors via the xiphoid approach is becoming increasingly mature. However, due to the narrow space in the anterior and posterior mediastinum behind the sternum, the operating space is small, and the surgery is quite difficult. It is necessary to elevate the sternum to expand the mediastinal space, expose the mediastinum, increase the operating space, reduce the difficulty of the surgery, and increase the safety of the surgery.

[0003] Chinese Patent Publication No. CN 221830680 U, published on October 15, 2024, discloses a sternal retractor device for mediastinal exposure. The device includes a main frame support, shaped like a "door," comprising two vertical rods and a horizontal rod. The horizontal rod is connected to the upper ends of the two vertical rods at both ends. A bed edge fixator is connected to the bottom of each vertical rod. A second fixator is slidably connected to the horizontal rod. A horizontally arranged cantilever beam is connected to the second fixator. Two third fixators are slidably connected to the cantilever beam. Each third fixator is connected to a liftable sliding rod. A hook assembly is connected to the bottom of the sliding rod. A gear is installed in each third fixator. A drive handle is provided outside the third fixator, coaxially fixed to the gear. A connecting hole is provided inside the third fixator. One end of the sliding rod is slidably connected to the connecting hole. A rack is provided on one side wall of the sliding rod, meshing with the gear. Rotating the drive handle drives the gear to rotate, which in turn moves the rack up and down, thus moving the sliding rod up and down. The shortcomings of the above patent are: the gears and racks on the balance hook device are not designed with a locking mechanism, and the slide bar is locked only by the meshing of the gears and racks themselves. The fixing effect is poor and the stability is low. Therefore, when the patient is lifted, the hook assembly at the bottom of the slide bar is easy to cause the slide bar to slide down automatically due to the weight of the patient, resulting in lifting failure.

[0004] In summary, there is a need for a traction and lifting structure for a balance hook device that can improve the fixing effect on the slide bar. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing technologies where gears and racks lack locking mechanisms and rely solely on the meshing of their teeth to lock the slide bar. This results in poor fixing and low stability, making it easy for the slide bar to slide automatically due to the patient's weight during the lifting process. The invention provides a traction lifting structure for a balance hook device that improves the fixing effect of the lifting rod.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A traction and lifting structure for a balance hook device includes a lifting base and a hook. The lifting base has a lifting rod guide hole, the lifting rod is inserted into the lifting rod guide hole and slidably connected to it vertically, the hook is installed at the bottom of the lifting rod and detachably connected to it, the lifting rod is provided with a rack, the lifting base is equipped with a rack and pinion drive assembly connected to the lifting rod, and a limiting plate is also installed on the surface of the lifting base. The limiting plate is placed on the side of the rack and rotatably connected to the lifting base, and the limiting plate is inserted into the tooth groove of the rack.

[0007] In use, the rack and pinion transmission assembly is controlled to move the lifting rod and its hook up and down, hooking onto the subcutaneous tissue above the sternum for lifting. The structure is simple and easy to operate. When the lifting rod is being lifted against the patient, the limiting plate and the rack are misaligned. After lifting, the limiting plate is rotated to insert into the groove of the rack, thus locking the rack in place and improving the stability of the lifting rod.

[0008] Preferably, the rack and pinion drive assembly includes a bearing mounted on a lifting seat. The bearing is positioned on the side of the lifting rod and rotatably connected to the lifting seat. The geometric center line of the bearing is perpendicular to the lifting rod. Several actuating shafts are fixed on the bearing, and these shafts are evenly distributed in a ring outside the geometric center line of the bearing. The actuating shafts are parallel to the geometric center line of the bearing and mesh with the tooth grooves of the rack. In use, rotating the bearing drives the actuating shafts, causing them to rotate around the geometric center line of the bearing and mesh with the tooth grooves of the rack. This drives the lifting rod and its hook to move up and down. The structure is simple and the operation is convenient.

[0009] Preferably, the hook is provided with a hook post, and the hook and hook post are integrally and fixedly connected. The bottom of the lifting rod is provided with a hook post insertion hole, and the hook post and hook post insertion hole are inserted into each other. This hook is an integrated design, which improves the structural strength of the hook and enhances the installation stability through the integrated connection of the hook and hook post. During installation, the hook is inserted into the hook post insertion hole at the bottom of the lifting rod through the hook post.

[0010] Preferably, the hook is provided with a second hook post and several height adjustment holes arranged in a straight line from top to bottom. The second hook post and the height adjustment holes are interlocked. The bottom of the lifting rod is provided with a second hook post hole, which is also interlocked with the second hook post hole. This hook is a split design, allowing for flexible selection of the installation height on the lifting rod through the multiple height adjustment holes. During installation, the appropriate height adjustment hole on the hook is aligned with the second hook post hole on the lifting rod, and then the second hook post passes through both the height adjustment hole and the second hook post hole sequentially to complete the installation and fixation of the hook on the lifting rod.

[0011] Preferably, the hook is equipped with a buckle, which consists of a buckle ring and a sleeve. The buckle ring and the sleeve are rotatably connected. The bottom of the hook has a bent hook portion, and the buckle ring and the bent hook portion are interlocked. A traction strip is installed on the hook, and the traction strip has a groove that matches the sleeve, with the sleeve fitting into the groove on the traction strip. For patients who have difficulty lifting the sternum, a traction strip can be used to pass under the skin above the sternum, then connected to the buckle ring via the hook, and then the skin above the sternum can be pulled to elevate the sternum, thereby improving the success rate of lifting.

[0012] Preferably, both ends of the traction strip are provided with puncture heads, one end of which is fixedly connected to the end face of the traction strip, and the other end of which is blunt. This puncture head design facilitates transverse penetration of the subcutaneous tissue above the sternum.

[0013] Preferably, the puncture head is further provided with a limiting sleeve. The outer wall of the puncture head has an external threaded area, and the inner wall of the limiting sleeve has an internal threaded area that matches the external threaded area. The limiting sleeve is threadedly connected to the puncture head through the cooperation of the internal and external threaded areas. The width of the puncture head is smaller than the width of the pulling strip, and the outer diameter of the limiting sleeve is larger than the groove width. The design of the limiting sleeve facilitates the limiting of the hooks fitted on the pulling strip, preventing them from detaching. The threaded connection is simple and convenient, facilitating installation and disassembly.

[0014] The beneficial effects of this utility model are: improved fixing effect on the lifting rod; high installation stability; improved structural strength of the hook, enhancing installation stability; free selection of the installation height of the hook on the lifting rod; and improved lifting success rate. Attached Figure Description

[0015] Figure 1 This is the front view showing the connection between the lifting platform and the lifting rod; Figure 2 yes Figure 1 Sectional view at point DD; Figure 3 This is a top view showing the connection between the lifting seat and the lifting rod; Figure 4 yes Figure 3 Sectional view at EE; Figure 5 yes Figure 4 Enlarged view at point F; Figure 6 This is a structural diagram of the first design of the hook; Figure 7 This is a structural diagram of the second hook design; Figure 8 This is a schematic diagram of the installation of the pull bar on the hook; Figure 9 This is a schematic diagram of the tension bar structure.

[0016] In the diagram: 37. Lifting seat, 38. Hook, 39. Mounting guide hole, 40. Frame structure, 41. Lifting rod, 42. Lifting rod guide hole, 43. Rack, 44. Shaft seat, 45. Actuating shaft, 46. Limiting plate, 47. Hook post one, 48. Hook post insertion hole one, 49. Hook post two, 50. Height adjustment insertion hole, 51. Hook post insertion hole two, 52. Snap ring, 53. Sleeve body, 54. Hook part, 55. Sleeve groove, 58. Screw hole, 59. Tightening screw, 60. Shaft disc, 61. Pulling bar, 62. Piercing head, 63. Limiting sleeve. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In the embodiments described, a traction and lifting structure for a balance hook device includes a lifting seat 37 and a hook 38. The lifting seat 37 is provided with a lifting rod guide hole 42. The lifting rod 41 is inserted into the lifting rod guide hole 42 and slidably connected to it. The hook 38 is installed at the bottom of the lifting rod 41 and detachably connected to it. The lifting rod 41 is provided with a rack 43. The lifting seat 37 is equipped with a rack and pinion drive assembly connected to the lifting rod 41. A limiting piece 46 is also installed on the surface of the lifting seat 37. The limiting piece 46 is placed on the side of the rack 43 and rotatably connected to the lifting seat 37. The limiting piece 46 is inserted into the tooth groove of the rack 43.

[0019] The lifting base 37 is provided with mounting guide holes 39 for mounting onto the frame structure 40 of the balance hook device. The side wall of the mounting guide hole 39 is provided with screw holes 58, and screws 59 are threaded into the screw holes 58. The user can tighten the screws 59 to make them press against the frame structure 40, thereby achieving relative fixation between the lifting base 37 and the frame structure 40.

[0020] The rack and pinion drive assembly includes a bearing seat 44 mounted on a lifting base 37. The bearing seat 44 is located on the side of the lifting rod 41 and is rotatably connected to the lifting base 37. The geometric center line of the bearing seat 44 is perpendicular to the lifting rod 41. Several actuating shafts 45 are fixed on the bearing seat 44. The actuating shafts 45 are evenly distributed in a ring outside the geometric center line of the bearing seat 44, and are parallel to the geometric center line of the bearing seat 44. The actuating shafts 45 mesh with the tooth grooves of the rack 43. A shaft disc 60, symmetrical to the bearing seat 44, is also mounted on the lifting base 37. The shaft disc 60 is rotatably connected to the lifting base 37. The actuating shafts 45 are located between the bearing seat 44 and the shaft disc 60. One end of the actuating shaft 45 is fixedly connected to the bearing seat 44, and the other end is fixedly connected to the shaft disc 60. A movable handle is mounted on the bearing seat 44.

[0021] In use, rotating the bearing seat 44 drives the actuating shaft 45 to rotate around the geometric center line of the bearing seat 44, engaging with the tooth groove of the rack 43. This causes the lifting rod 41 and its hook 38 to move up and down, hooking onto the subcutaneous tissue above the sternum for lifting. When the lifting rod 41 lifts the patient, the limiting plate 46 is in a misaligned state with the rack 43. After lifting, rotating the limiting plate 46 causes it to insert into the tooth groove of the rack 43, thus locking and fixing the rack 43.

[0022] like Figure 6 As shown, hook 38 is equipped with hook post 47, and hook 38 and hook post 47 are integrally and fixedly connected. The bottom of lifting rod 41 is provided with hook post insertion hole 48, and hook post 47 is inserted into hook post insertion hole 48. This hook 38 is an integral design, and the integrated connection between hook 38 and hook post 47 improves the structural strength of hook 38. During installation, hook 38 is inserted into hook post insertion hole 47 at the bottom of lifting rod 41 via hook post 47.

[0023] like Figure 7 As shown, hook 38 is provided with hook post 49, and hook 38 is provided with several height adjustment holes 50. The height adjustment holes 50 are arranged in a straight line from top to bottom on hook 38. Hook post 49 and height adjustment holes 50 are inserted into each other. Hook post hole 51 is provided at the bottom of lifting rod 41. Hook post 49 and hook post hole 51 are inserted into each other.

[0024] This hook 38 is a split design. Through several height adjustment holes 50, the installation height of the hook 38 on the lifting rod 41 can be freely selected. During installation, align the appropriate height adjustment hole 50 on the hook 38 with the hook post hole 51 on the lifting rod 41, and then pass the hook post 49 through the height adjustment hole 50 and the hook post hole 51 in sequence to complete the installation and fixation of the hook 38 on the lifting rod 41.

[0025] like Figure 8 As shown, a hook 38 is equipped with a hook, which consists of a buckle 52 and a sleeve 53. The buckle 52 and the sleeve 53 are rotatably connected. The bottom of the hook 38 is provided with a hook part 54. The buckle 52 and the hook part 54 are interlocked. A pull bar 61 is installed on the hook. The pull bar 61 is provided with a groove 55 that matches the sleeve 53. The sleeve 53 is fitted into the groove 55 on the pull bar 61.

[0026] like Figure 8 and Figure 9 As shown, both ends of the traction strip 61 are provided with puncture heads 62. One end of the puncture head 62 is fixedly connected to the end face of the traction strip 61, and the other end of the puncture head 62 is a blunt head.

[0027] The piercing head 62 is also provided with a limiting sleeve 63. The outer side wall of the piercing head 62 is provided with an external thread area, and the inner side wall of the limiting sleeve is provided with an internal thread area that matches the external thread area. The limiting sleeve 63 is threadedly connected to the piercing head 62 through the cooperation of the internal thread area and the external thread area. The width of the piercing head 62 is smaller than the width of the pulling strip 61, and the outer diameter of the limiting sleeve 63 is larger than the groove width of the sleeve groove 55.

[0028] For patients who have difficulty lifting the sternum, a traction strip 61 can be used to pass under the skin above the sternum, and then connected to a buckle 52 through the hook 54 on the hook 38. After that, the skin above the sternum is pulled to raise the sternum, thereby increasing the success rate of lifting.

Claims

1. A traction and lifting structure for a balance hook device, characterized in that, The device includes a lifting seat (37) and a hook (38). The lifting seat (37) is provided with a lifting rod guide hole (42). The lifting rod (41) is inserted into the lifting rod guide hole (42) and slidably connected to it. The hook (38) is installed at the bottom of the lifting rod (41) and detachably connected to it. The lifting rod (41) is provided with a rack (43). The lifting seat (37) is equipped with a rack and pinion drive assembly connected to the lifting rod (41). The surface of the lifting seat (37) is also equipped with a limiting piece (46). The limiting piece (46) is placed on the side of the rack (43) and rotatably connected to the lifting seat (37). The limiting piece (46) is inserted into the tooth groove of the rack (43).

2. The traction and lifting structure for a balance hook device according to claim 1, characterized in that, The rack and pinion drive assembly includes a bearing seat (44) mounted on a lifting seat (37). The bearing seat (44) is located on the side of the lifting rod (41) and is rotatably connected to the lifting seat (37). The geometric center line of the bearing seat (44) is perpendicular to the lifting rod (41). Several actuating shafts (45) are fixed on the bearing seat (44). The actuating shafts (45) are evenly distributed in a ring outside the geometric center line of the bearing seat (44). The actuating shafts (45) are parallel to the geometric center line of the bearing seat (44). The actuating shafts (45) mesh with the tooth grooves of the rack (43).

3. The traction and lifting structure for a balance hook device according to claim 1, characterized in that, The hook (38) is provided with a hook post (47), the hook (38) and the hook post (47) are fixedly connected as an integral unit, and the bottom of the lifting rod (41) is provided with a hook post insertion hole (48), the hook post (47) and the hook post insertion hole (48) are inserted into each other.

4. The traction and lifting structure for a balance hook device according to claim 1, characterized in that, The hook (38) is provided with a second hook post (49), and the hook (38) is provided with a plurality of height adjustment holes (50). The height adjustment holes (50) are arranged in a straight line from top to bottom on the hook (38). The second hook post (49) and the height adjustment holes (50) are inserted into each other. The bottom of the lifting rod (41) is provided with a second hook post hole (51), and the second hook post (49) and the second hook post hole (51) are inserted into each other.

5. The traction and lifting structure for a balance hook device according to claim 1, characterized in that, The hook (38) is equipped with a hook, which consists of a buckle (52) and a sleeve (53). The buckle (52) and the sleeve (53) are rotatably connected. The bottom of the hook (38) is provided with a hook part (54). The buckle (52) and the hook part (54) are fastened together. The hook is equipped with a pull bar (61). The pull bar (61) is provided with a groove (55) that matches the sleeve (53). The sleeve (53) is fitted into the groove (55) on the pull bar (61).

6. The traction and lifting structure for a balance hook device according to claim 5, characterized in that, Both ends of the traction strip (61) are provided with puncture heads (62), one end of the puncture head (62) is fixedly connected to the end face of the traction strip (61), and the other end of the puncture head (62) is a blunt head.

7. The traction and lifting structure for a balance hook device according to claim 6, characterized in that, The puncture head (62) is also provided with a limiting sleeve (63). The outer side wall of the puncture head (62) is provided with an external thread area, and the inner side wall of the limiting sleeve is provided with an internal thread area that matches the external thread area. The limiting sleeve (63) is threadedly connected to the puncture head (62) through the cooperation of the internal thread area and the external thread area. The width of the puncture head (62) is smaller than the width of the pulling strip (61), and the outer diameter of the limiting sleeve (63) is larger than the groove width of the sleeve groove (55).

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