Lower limb bone traction equipment

Abstract

The invention particularly relates to lower-limb bone traction equipment, and belongs to the technical field of lower-limb bone traction equipment. The lower limb bone traction equipment comprises a supporting part, a traction assembly and a driving assembly. A containing cavity is formed in the supporting part and used for containing limbs, and a bag body is arranged on the inner wall face of the containing cavity. The traction assembly is used for being connected with limbs. The driving assembly is used for driving the traction assembly to move so as to pull limbs. The bag body is in contact with the limb to support the limb, on one hand, the bag body can be fully attached to the limb, the supporting effect is improved, and on the other hand, the soft material of the bag body increases the comfort of the limb.

Description

Technical Field

[0001] The invention belongs to the technical field of lower limb bone traction equipment, and in particular relates to a lower limb bone traction equipment. Background Art

[0002] Lower limb bone traction is one of the important methods in clinical orthopedics to treat lower limb fractures and some orthopedic diseases. This method mainly applies continuous and gentle traction on the bones to achieve the purpose of reduction, fixation, pain relief, deformity prevention and easy care.

[0003] At present, the purpose of bone traction is achieved clinically by using Brown's frame, which mainly includes the following parts: 1. Traction frame: a structure made of metal or hard material, providing stable support, suitable for traction at various angles. 2. Traction bow: a device for connecting traction needles, applying traction through traction ropes and weights. 3. Traction needle (Kirschner wire or Steinmann wire): inserted into the hard part of the bone to provide traction points. 4. Pulley system: installed on the traction frame, changing the direction of traction and reducing friction through pulleys. 5. Traction rope: usually a tough nylon rope is used to connect the traction bow and weights. 6. Weights (weights or sandbags): used to generate traction and adjust the strength of traction. 8. Fixed pad (cotton pad or sandbag): used to support the patient's limbs to ensure stability and comfort. However, the traditional Brown's frame has some disadvantages in use. For example, the shape of the fixed pad is fixed, so the fit to the patient's limbs is poor, which reduces the stability and comfort of the patient's limb support. Summary of the invention

[0004] The purpose of the present invention is to provide a lower limb bone traction device, which can effectively support the patient's limbs and improve the comfort of supporting the patient's limbs.

[0005] To achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows: the embodiment of the present application provides a lower limb bone traction device, including a support part, a traction assembly and a driving assembly. The support part is provided with a receiving cavity, the receiving cavity is used to receive the limb, and the inner wall surface of the receiving cavity is provided with a capsule. The traction assembly is used to connect with the limb. The driving assembly is used to drive the traction assembly to move so as to pull the limb.

[0006] In some embodiments, a plurality of chamber units are disposed inside the capsule, and two adjacent chamber units are connected via a connecting channel, and each chamber unit is provided with an inlet and outlet channel.

[0007] In some embodiments, the accommodating cavity includes two first walls arranged opposite to each other along a first direction and a second wall connected to the two first walls. The first wall and the second wall are respectively provided with capsules. Along the first direction, the chamber units at both ends of the capsule of the second wall are respectively abutted against the capsules of the two first walls.

[0008] In some embodiments, the driving assembly includes a plurality of pulleys, a winding component and a first traction rope. The pulleys are rotatably connected to the support portion, the first traction rope is connected to the traction assembly, the first traction rope is wound around each pulley, and the winding component is used to wind up the first traction rope.

[0009] In some embodiments, the winding component and the traction assembly are respectively disposed on the same side of the plurality of pulleys.

[0010] In some embodiments, the driving assembly further comprises a lifting arm, the lifting arm comprises a lifting end which can move back and forth, the lifting arm is connected to the supporting portion, and the lifting end is provided with at least one pulley.

[0011] In some embodiments, the winding component includes a winding roller and a limiting portion. The winding roller is rotatably disposed on the support portion, the first traction rope is wound around the winding roller, and the winding roller is provided with a plurality of abutting portions around the rotation axis of the winding roller. The limiting portion is movably disposed on the support portion, and the limiting portion is used for the abutting portion to abut.

[0012] In some embodiments, the limiting portion includes a column, a telescopic unit and a flexible cover. The column is movably arranged on the support portion. The telescopic unit is arranged on the column, and the telescopic unit includes a telescopic end that can move back and forth, and the telescopic end is used to abut against the abutting portion, and the moving direction of the telescopic end is perpendicular to the moving direction of the column. The flexible cover is wrapped around the outer wall of the column and the telescopic unit.

[0013] In some embodiments, the limiting portion further includes a slide rail, a sliding portion, an elastic protrusion, and a second traction rope. The slide rail is connected to the column, the extension direction of the slide rail is parallel to the moving direction of the column, the sliding portion is slidably connected to the slide rail, the elastic protrusion includes a first end and a second end, the first end is connected to the sliding portion, the second end is connected to the slide rail, the first end is arranged on a side of the second end away from the telescopic end, and along the moving direction of the telescopic end, the elastic protrusion is in a protruding shape protruding toward the abutting portion. The second traction rope is connected to the sliding portion and the telescopic end, and the second traction rope is configured so that when the telescopic end moves toward the abutting portion, the second traction rope pulls the sliding portion to move toward the second end.

[0014] In some embodiments, the limiting portion further includes an abutment wheel, which is rotatably connected to the column, and the second traction rope is wound around the abutment wheel.

[0015] The present invention has the following beneficial effects:

[0016] 1. The bladder is in contact with the limbs to support the limbs. On the one hand, the bladder can fully fit the limbs to improve the support effect. On the other hand, the soft material of the bladder increases the comfort of the limbs.

[0017] 2. Two adjacent chamber units are connected by a connecting channel. On the one hand, the amount of medium in each chamber unit can be adjusted, which increases the flexibility of adjusting the shape of the capsule. On the other hand, the medium in the capsule can flow between two adjacent chambers, which increases the efficiency of adjusting the shape of the capsule.

[0018] 3. The rotation of the winding roller can be fine-tuned through the telescopic end. At the same time, under the action of the elastic protrusion, the risk of the telescopic end detaching from the abutment portion of the winding roller is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the lower limb bone traction device of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the support part of the present invention;

[0021] Figure 3 It is a schematic diagram of the arrangement of the capsule of the present invention on the support part;

[0022] Figure 4 It is a schematic structural diagram of the limiting part of the present invention.

[0023] Figure numbers: 1-support part, 2-traction assembly, 3-torque measuring component, 4-first traction rope, 5-pulley, 6-lifting arm, 7-winding roller, 8-limiting part, 9-capsule, 10-chamber unit, 11-entry and exit channel, 12-connecting channel, 13-rest part, 14-column, 15-telescopic unit, 16-telescopic end, 17-second traction rope, 18-slide rail, 19-elastic protrusion, 20-sliding part, 21-flexible cover, 22-rest wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] The embodiment of the present application provides a lower limb bone traction device, comprising a support portion 1, a traction assembly 2 and a drive assembly. The support portion 1 is provided with a receiving cavity, the receiving cavity is used to receive a limb, and a capsule 9 is provided on the inner wall surface of the receiving cavity. The traction assembly 2 is used to connect with the limb. The drive assembly is used to drive the traction assembly 2 to move so as to traction the limb.

[0027] The traction assembly 2 may include a traction bow and a traction needle, the driving assembly is connected to the traction bow, and the traction needle is used to connect with the limb. The specific structure of the traction bow and the traction needle, and the specific connection method of the traction needle and the limb are well known to those skilled in the art and will not be repeated here.

[0028] The accommodating cavity is a structure with an opening on the side, so that the limb can be placed into the accommodating cavity through the opening.

[0029] The capsule 9 can be used to contain gas or liquid. The capsule 9 can be provided as one or more.

[0030] The driving assembly drives the traction assembly 2 to move, so that the traction assembly 2 can play a traction role on the limb.

[0031] In the technical solution of the present application, the limb is supported by contacting the bladder 9 with the limb. On the one hand, the bladder 9 can fully fit the limb to improve the supporting effect. On the other hand, the soft material of the bladder 9 increases the comfort of the limb.

[0032] A torque measuring component 3 may be provided between the driving component and the traction component 2 , and the torque measuring component 3 may be selected from existing products.

[0033] It should be noted that the technical solution of this application does not involve improvements in medical effects.

[0034] In some embodiments, a plurality of chamber units 10 are disposed inside the capsule 9 , and two adjacent chamber units 10 are connected via a connecting channel 12 , and each chamber unit 10 is provided with an inlet and outlet channel 11 .

[0035] The communication channel 12 is provided with a switch, and the specific type of the switch can be selected from existing products, which will not be described here. The communication channel 12 can be provided with a power device, such as a pump, so that the medium can flow between two adjacent chamber units 10, and the specific type of the pump can be selected from existing products.

[0036] Similarly, the inlet and outlet channel 11 may also be provided with a switch. The inlet and outlet channel 11 is used to input or discharge the medium into or out of the capsule 9. The inlet and outlet channel 11 may be connected to a medium source, and the medium may enter and exit the chamber unit 10 through the medium source. For example, when the medium in the capsule 9 is gas, the inlet and outlet channel 11 may be connected to a gas charging and discharging device. The structure and working principle of the gas charging and discharging device are well known to those skilled in the art and will not be described in detail here.

[0037] Two adjacent chamber units 10 are connected by a connecting channel 12. On the one hand, the amount of medium in each chamber unit 10 can be adjusted, which increases the flexibility of adjusting the shape of the capsule 9. On the other hand, the medium in the capsule 9 can flow between two adjacent chambers, which increases the efficiency of adjusting the shape of the capsule 9. For example, between two adjacent chamber units 10, when one chamber unit 10 needs to shrink and the other needs to expand, the medium in the chamber unit 10 that needs to shrink is discharged into the chamber unit 10 that needs to expand. At the same time, the medium can be input into the chamber unit 10 that needs to expand in conjunction with the inlet and outlet channel 11. Compared with only inputting the medium into the chamber unit 10 through the inlet and outlet channel 11 to expand it, it is more efficient.

[0038] In some embodiments, the accommodating cavity includes two first walls arranged opposite to each other along a first direction and a second wall connected to the two first walls. The first wall and the second wall are respectively provided with capsules 9. Along the first direction, the chamber units 10 at both ends of the capsules 9 of the second wall are respectively abutted against the capsules 9 of the two first walls.

[0039] The first direction may be the direction indicated by the X-axis in the figure.

[0040] The chamber units 10 at both ends of the capsule 9 of the second wall are respectively against the two capsules 9 of the first wall, which can increase the coverage area of ​​the capsule 9 on the inner wall of the accommodating cavity and increase the comfort of the patient. On the other hand, the capsule 9 of the first wall and the capsule 9 of the second wall can be linked to increase the adjustment efficiency of the capsule 9. For example, in the initial state, the medium can be input into the capsule 9 of the first wall first, and then into the capsule 9 of the second wall. If the volume of the capsule 9 of the first wall is too large and needs to be reduced, since the capsule 9 of the second wall needs to be expanded, the capsule 9 of the second wall can squeeze the chamber unit 10 of the first wall when it expands, and the pressure is applied by the capsule 9 of the second wall, which facilitates the discharge of the medium in the capsule 9 of the first wall, thereby increasing the adjustment efficiency.

[0041] In some embodiments, the driving assembly includes a plurality of pulleys 5, a winding component and a first traction rope 4. The pulleys 5 are rotatably connected to the support portion 1, the first traction rope 4 is connected to the traction assembly 2, the first traction rope 4 is wound around each pulley 5, and the winding component is used to wind up the first traction rope 4.

[0042] The first traction rope 4 is rolled up by the rolling component, so that the first traction rope 4 can drive the traction assembly 2 to achieve the purpose of traction of the limb.

[0043] The first traction rope 4 is wound around a plurality of pulleys 5 , and the pulleys 5 are used to facilitate adjustment of the direction in which the first traction rope 4 drives the traction assembly 2 to move.

[0044] In some embodiments, the winding component and the traction assembly 2 are respectively arranged on the same side of the plurality of pulleys 5 .

[0045] The winding component and the traction assembly 2 are respectively arranged on the same side of the plurality of pulleys 5. The advantage of such an arrangement is that the first traction rope 4 can be folded in half, thereby reducing the space occupied by the lower limb bone traction device.

[0046] In some embodiments, the driving assembly further comprises a lifting arm 6 , the lifting arm 6 comprises a lifting end which can move back and forth, the lifting arm 6 is connected to the supporting part 1 , and at least one pulley 5 is provided at the lifting end.

[0047] The lifting arm 6 can be selected from existing products. For example, the lifting arm 6 can be an electric push rod, and the movable end of the electric push rod is the lifting end.

[0048] When the lifting end moves, the position of the pulley 5 relative to the support part 1 can be adjusted, and thus the moving direction of the first traction rope 4 can also be adjusted.

[0049] Among the multiple pulleys 5 , the pulley 5 closest to the traction assembly 2 may be connected to the lifting end, so that the direction in which the first traction rope 4 pulls the traction assembly 2 to move can be adjusted through the lifting arm 6 .

[0050] In some embodiments, the winding component includes a winding roller 7 and a limiting portion 8. The winding roller 7 is rotatably disposed on the supporting portion 1, and the first traction rope 4 is wound around the winding roller 7. The winding roller 7 is provided with a plurality of abutting portions 13 around the rotation axis of the winding roller 7. The limiting portion 8 is movably disposed on the supporting portion 1, and the limiting portion 8 is used for the abutting portion 13 to abut.

[0051] The first traction rope 4 is wound up by the winding roller 7 so that the first traction rope 4 can pull the traction assembly 2 to move.

[0052] The abutment portion 13 cooperates with the limiting portion 8 to lock the winding roller 7, that is, when the winding roller 7 rotates, the limiting portion 8 moves away so that the limiting portion 8 does not hinder the winding of the winding roller 7. When the winding roller 7 is wound up, the position of the limiting portion 8 is moved so that when the winding roller 7 is reversed, the abutment portion 13 can abut against the limiting portion 8, so that the winding roller 7 cannot be reversed.

[0053] In some embodiments, the limiting portion 8 includes a column 14, a telescopic unit 15 and a flexible cover 21. The column 14 is movably disposed on the support portion 1. The telescopic unit 15 is disposed on the column 14, and the telescopic unit 15 includes a reciprocating telescopic end 16, which is used to abut against the abutting portion 13, and the moving direction of the telescopic end 16 is perpendicular to the moving direction of the column 14. The flexible cover 21 is wrapped around the outer wall of the column 14 and the telescopic unit 15.

[0054] The support portion 1 may be provided with a guide rail, and the column 14 is slidably connected to the guide rail, so that the position of the column 14 relative to the support portion 1 can be adjusted.

[0055] The telescopic unit 15 may be an electric push rod, and the movable end of the electric push rod is the telescopic end 16 .

[0056] The moving direction of the column 14, the moving direction of the telescopic end 16 and the rotation axis of the winding roller 7 may be perpendicular to each other.

[0057] The column 14 can move in the vertical direction, and the telescopic end 16 can move in the horizontal direction.

[0058] The flexible cover 21 is wrapped around the outer wall of the column 14 . On the one hand, the friction between the limiting portion 8 and the abutting portion 13 is increased. On the other hand, the flexible cover 21 can increase the friction between the limiting portion 8 and the abutting portion 13 .

[0059] The telescopic end 16 abuts against the abutting portion 13, so that the abutting portion 13 can be limited. On the other hand, the common limiting structure cannot be fine-tuned after limiting. In the embodiment of the present application, the telescopic end 16 pushes the abutting portion 13 to move, so that the winding roller 7 can rotate within a certain range, which is convenient for fine-tuning the winding degree of the winding roller 7 on the first traction rope 4.

[0060] In some embodiments, the limiting portion 8 further includes a slide rail 18, a sliding portion 20, an elastic protrusion 19, and a second traction rope 17. The slide rail 18 is connected to the column 14, and the extension direction of the slide rail 18 is parallel to the moving direction of the column 14. The sliding portion 20 is slidably connected to the slide rail 18. The elastic protrusion 19 includes a first end and a second end. The first end is connected to the sliding portion 20, and the second end is connected to the slide rail 18. The first end is arranged on a side of the second end away from the telescopic end 16. Along the moving direction of the telescopic end 16, the elastic protrusion 19 is in a protruding shape protruding toward the abutting portion 13. The second traction rope 17 is connected to the sliding portion 20 and the telescopic end 16. The second traction rope 17 is configured so that when the telescopic end 16 moves toward the abutting portion 13, the second traction rope 17 pulls the sliding portion 20 to move toward the second end.

[0061] The first end of the elastic protrusion 19 is connected to the sliding portion 20 , and the second end is connected to the slide rail 18 , so that the distance between the first end and the second end of the elastic protrusion 19 can be adjusted.

[0062] Since the telescopic end 16 moves in a straight line and pushes the abutting portion 13 to move, the winding roller 7 rotates. As the winding roller 7 rotates, the contact area between the telescopic end 16 and the abutting portion 13 gradually decreases, and the telescopic end 16 may detach from the abutting portion 13, causing the telescopic end 16 to fail to play a normal limiting role.

[0063] The elastic protrusion 19 is a protruding structure protruding toward the abutting portion 13. When the first end and the second end are closed, the protrusion degree of the elastic protrusion 19 increases. The elastic protrusion 19 can make the wall surface of the flexible cover body 21 partially protrude. The protruding part of the flexible cover body 21 can support the flexible cover body 21, so that after the abutting portion 13 moves a certain distance relative to the telescopic end 16, the flexible cover body 21 can still support the abutting portion 13, thereby reducing the risk of the abutting portion 13 detaching from the limiting portion 8.

[0064] At the same time, as the telescopic end 16 pushes the abutment portion 13 to move, the second traction rope 17 pulls the first end to move, so that the first end and the second end are closed, and the protrusion degree of the elastic protrusion 19 can be increased. The elastic protrusion 19 will hinder the movement of the abutment portion 13. The elastic protrusion 19 can limit the travel of the telescopic end 16 to push the abutment portion 13 to move, thereby reducing the risk of the abutment portion 13 detaching from the limiting portion 8.

[0065] The structure in which the elastic protrusion 19 can generate elastic deformation can also reduce the risk of the second traction rope 17 being disconnected.

[0066] The specific position of the elastic protrusion 19 can be set according to the rotation direction of the winding roller 7. Taking the figure as an example, if the winding roller 7 rotates counterclockwise to reel in the second traction rope 17, the telescopic end 16 moves to the right to push the winding roller 7 to rotate, so as to achieve the purpose of fine-tuning the winding roller 7. When the winding roller 7 rotates, the abutment portion 13 has a tendency to move the telescopic end 16 upward. At this time, the elastic protrusion 19 can be set above the telescopic end 16. In addition, the length of the elastic protrusion 19 can also be set as needed. Taking the figure as an example, the length of the elastic protrusion 19 needs to be able to meet the requirement that when the second traction rope 17 pulls the first end to move a certain distance, the elastic protrusion 19 can at least partially protrude above the abutment portion 13 to limit the movement of the abutment portion 13.

[0067] When the limiting part 8 needs to be removed, the telescopic end 16 is first reset. Under the action of the elastic restoring force of the elastic protrusion 19, the protrusion of the elastic protrusion 19 is reduced, and then the protrusion of the flexible cover body 21 is reduced, so that the elastic protrusion 19 will not hinder the movement of the limiting part 8.

[0068] In some embodiments, the limiting portion 8 further includes an abutting wheel 22 , which is rotatably connected to the column 14 , and the second traction rope 17 is wound around the abutting wheel 22 .

[0069] The abutment wheel 22 is rotatably connected to the column 14, and the second traction rope 17 is wound around the abutment wheel 22 to facilitate adjustment of the moving direction of the second traction rope 17. For example, the first end and the telescopic end 16 can be located on the same side of the abutment wheel 22, so that when the telescopic end 16 moves, it can pull the first end to move, so that the first end and the second end can be closed.

[0070] The above embodiments are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A lower limb bone traction device, characterized in that: include: A support portion (1), the support portion (1) being provided with a receiving cavity, the receiving cavity being used to receive a limb, and a capsule (9) being provided on an inner wall surface of the receiving cavity; A traction assembly (2), used for connecting to a limb; The driving component is used to drive the traction component (2) to move so as to traction the limb.

2. The lower limb bone traction device according to claim 1, characterized in that: A plurality of chamber units (10) are arranged inside the capsule (9), two adjacent chamber units (10) are connected via a connecting channel (12), and each chamber unit (10) is provided with an inlet and outlet channel (11).

3. The lower limb bone traction device according to claim 2, characterized in that: The accommodating cavity comprises two first walls arranged opposite to each other along a first direction and a second wall connected to the two first walls, the first wall and the second wall are respectively provided with a capsule (9), and along the first direction, the chamber units (10) at both ends of the capsule (9) of the second wall respectively abut against the capsules (9) of the two first walls.

4. The lower limb bone traction device according to claim 1, characterized in that: The drive assembly comprises: A plurality of pulleys (5), wherein the pulleys (5) are rotatably connected to the support portion (1); Winding components; A first traction rope (4) is connected to the traction assembly (2); the first traction rope (4) is wound around each of the pulleys (5); and the winding component is used for winding the first traction rope (4).

5. The lower limb bone traction device according to claim 4, characterized in that: The winding component and the traction assembly (2) are respectively arranged on the same side of the plurality of pulleys (5).

6. The lower limb bone traction device according to claim 4, characterized in that: The driving assembly further comprises a lifting arm (6), wherein the lifting arm (6) comprises a lifting end which can move back and forth, the lifting arm (6) is connected to the supporting part (1), and the lifting end is provided with at least one pulley (5).

7. The lower limb bone traction device according to claim 4, characterized in that: The winding component comprises: A winding roller (7) is rotatably disposed on the support portion (1), the first traction rope (4) is wound around the winding roller (7), and around the rotation axis of the winding roller (7), the winding roller (7) is provided with a plurality of abutment portions (13); A limiting portion (8) is movably arranged on the supporting portion (1), and the limiting portion (8) is used for the abutting portion (13) to abut against.

8. The lower limb bone traction device according to claim 7, characterized in that: The limiting portion (8) comprises: A column (14) movably arranged on the support portion (1); A telescopic unit (15) is arranged on the column (14), comprising a telescopic end (16) that can move back and forth, the telescopic end (16) being used to abut against the abutting portion (13), and the moving direction of the telescopic end (16) being perpendicular to the moving direction of the column (14); A flexible cover (21) is wrapped around the outer wall of the column (14) and the telescopic unit (15).

9. The lower limb bone traction device according to claim 8, characterized in that: The limiting portion (8) further comprises: A slide rail (18) connected to the column (14), wherein the extension direction of the slide rail (18) is parallel to the moving direction of the column (14); A sliding portion (20) slidably connected to the slide rail (18); an elastic protrusion (19), comprising a first end and a second end, wherein the first end is connected to the sliding portion (20), the second end is connected to the slide rail (18), the first end is arranged on a side of the second end away from the telescopic end (16), and along the moving direction of the telescopic end (16), the elastic protrusion (19) is in a protruding shape protruding toward the abutting portion (13); A second traction rope (17), wherein the second traction rope (17) is connected to the sliding portion (20) and the telescopic end (16), and the second traction rope (17) is configured such that when the telescopic end (16) moves toward the abutting portion (13), the second traction rope (17) pulls the sliding portion (20) to move toward the second end.

10. The lower limb bone traction device according to claim 9, characterized in that: The limiting portion (8) further comprises a supporting wheel (22), the supporting wheel (22) being rotatably connected to the column (14), and the second traction rope (17) being wound around the supporting wheel (22).

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