Bone traction device

Abstract

The utility model relates to a bone traction device, and relates to the field of orthopedic medical instruments. The first rope is connected with a patient, and the second rope is connected with a weight to keep the weight in a suspended state; one end of the tension spring is fixedly connected with the first rope, and the other end is fixedly connected with the second rope; the limiting piece is fixedly connected with the tension spring and moves in the length direction of the tension spring along with stretching of the tension spring, the limiting piece and the fixing piece are arranged in a spaced mode in the first state, and the limiting piece abuts against the fixing piece in the second state; wherein the first state is a state in which a heavy object is stably suspended; in the second state, when the tension applied to the second rope by shaking of the weight exceeds the gravity of the weight and reaches a set value, the tension applied to the tension spring by the second rope is increased, so that the tension spring extends relative to the tension spring in the first state. The extension of the tension spring is limited through the contact of the limiting piece and the fixing piece, and the effect of limiting the increased tension of an affected part is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of orthopedics medical apparatus and instruments, especially to a bone traction device. BACKGROUND

[0002] Orthopedics traction is an important treatment method in orthopedics, which uses the principle of action and reaction in mechanics, applies external force to human spine or limb joints, connects the affected part with the traction rope of the traction device after the affected part is fixed and shaped by plaster, so as to achieve the treatment purpose.

[0003] During orthopedics traction, the correct body position needs to be maintained to ensure the traction effect. The weight of traction should be adjusted according to the condition, and cannot be increased or decreased at will. If the weight is too light, it may be not conducive to the reduction of fracture and the correction of deformity. If the weight is too heavy, it may cause the separation and displacement of the limbs.

[0004] Orthopedics traction can apply a fixed size of pulling force to the affected part by suspending a weight. However, when the weight is shaken, the pulling force exerted by the traction rope on the affected part will increase, which will affect the traction effect. SUMMARY

[0005] The utility model provides a kind of bone traction device, so that the pulling force of traction rope on the affected part can only increase the size set when weight shakes.

[0006] The utility model provides a kind of bone traction device, including fixed part, tension spring, limiting part, first rope and second rope;Wherein, fixed part is fixedly arranged relative to ground;First rope is used to be connected with patient, and second rope is used to be connected with weight to keep weight in suspended state;Tension spring one end is fixedly connected with first rope, and the other end is fixedly connected with second rope;Limiting part is fixedly connected with tension spring, and moves along the length direction of tension spring along with the expansion and contraction of tension spring, limiting part is spaced apart from fixed part in first state, and is pressed against fixed part in second state;Wherein, first state is the state that weight is stably suspended;Second state is that when the pulling force of weight shaking on second rope exceeds the gravity of weight to set value, the pulling force of second rope on tension spring increases to make tension spring relative to the state that first state is elongated.

[0007] Optionally, the limiting part is fixed to one end of the tension spring for connecting with the second rope.

[0008] Optionally, the limiting part includes at least two ends for pressing against the fixed part, and the two ends of the limiting part for pressing against the fixed part are located on both sides of the tension spring.

[0009] Optionally, the fixed part has a first cavity for accommodating the tension spring;The fixed part is provided with a first hole and a second hole in communication with the first cavity, the first hole accommodates the first rope to pass through, and the second hole accommodates the second rope to pass through;The limiting part is located in the first cavity, and the limiting part is in contact with the side wall of the first cavity in the second state.

[0010] Optionally, the fixing member comprises a base and an upper cover, the base is fixedly arranged, and the upper cover is detachably fixedly connected with the base.

[0011] Optionally, the fixing member further comprises a first pressing member, a second pressing member and a fastener; the first pressing member and the second pressing member are fixed on the base, the first pressing member and the second pressing member are oppositely arranged and are used for sleeving on the bed rail; and the fastener is threadedly connected with the first pressing member and is used for abutting against the bed rail to press and fix the second pressing member and the fastener on the bed rail.

[0012] Optionally, the upper cover is a transparent cover.

[0013] Optionally, the contact sensor is further arranged on the fixing member and is located at a position for contacting the limiting member.

[0014] In the above technical solution, when the weight connected to the second rope is touched and shaken, the pulling force applied by the second rope to the tension spring increases, so that the tension spring changes from the first state to the second state, at this time, the tension spring is elongated, and the pulling force applied by the tension spring to the first rope increases; when the limiting member connected with the tension spring contacts the fixing member, the tension spring stops elongating, a part of the force applied by the second rope to the tension spring is transmitted to the fixing member through the limiting member, and the pulling force applied by the tension spring to the first rope remains unchanged. The pulling force on the affected part is fixed in normal circumstances, and when some unexpected situation occurs, the force on the affected part is still within the set range, thereby being beneficial to the recovery of the affected part.

[0015] When the medical staff checks the patient, if it is observed that the contact sensor has a record, it can be concluded that the weight has been accidentally moved or the patient has moved relatively to the set position, and the medical staff will consciously check the patient carefully. If the measured value of the counter is large, it can be concluded that the weight may be touched many times or the patient moves frequently, and it is necessary to adjust the position of the weight or give the patient another medical order. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the whole embodiment;

[0017] Figure 2 is a sectional structural schematic diagram of the tension spring arranged in the base of the embodiment;

[0018] Figure 3 is a structural schematic diagram of the limiting member in the embodiment.

[0019] 1, fixed parts; 11, base; 12, upper cover; 13, first cavity; 14, first hole; 15, second hole; 16, first compression member; 17, second compression member; 18, fastener; 181, pressure plate; 2, tension spring; 3, limiting member; 4, first rope; 5, second rope; 6, weight; 7, contact sensor; 8, bed rail. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail below by the drawings and examples. Through these explanations, the characteristics and advantages of the utility model will become more clear and explicit.

[0021] The special word "exemplary" here means "as an example, embodiment or illustrative". Any embodiment described as "exemplary" here does not necessarily mean that it is superior or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0022] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0023] Reference Figure 1 And Figure 2 The utility model discloses a bone traction device including fixed parts 1, tension spring 2, limiting member 3, first rope 4 and second rope 5. Fixed parts 1 are fixedly arranged relative to the ground. First rope 4 is used to be connected with the patient, and second rope 5 is used to be connected with the weight 6 so that the weight 6 remains in a suspended state.

[0024] One end of tension spring 2 is fixedly connected with first rope 4, and the other end is fixedly connected with second rope 5.

[0025] Limiting member 3 is fixedly connected with tension spring 2 and moves along the length direction of tension spring 2 along with the expansion and contraction of tension spring 2, limiting member 3 is spaced apart from fixed parts 1 in the first state and is pressed against fixed parts 1 in the second state. The first state is the state that the weight 6 is stably suspended, and the second state is the state that the tension of second rope 5 caused by the shaking of weight 6 exceeds the gravity of weight 6 to a set value, the tension of second rope 5 applied to tension spring 2 increases, and tension spring 2 is elongated relative to the state of tension spring 2 in the first state.

[0026] Specifically, fixed parts 1 are fixed on bed rail 8 in the embodiment, and in other embodiments, the orthopedic traction device further includes a fixedly arranged support, and fixed parts 1 are fixed on the support.

[0027] First rope 4 and second rope 5 are flexible traction ropes. One end of tension spring 2 is connected with first rope 4, and the other end is connected with second rope 5. When the two ends of tension spring 2 are normally unobstructed, the force applied to first rope 4 by tension spring 2 and the force applied to second rope 5 by tension spring 2 are equal in size and opposite in direction.

[0028] For the convenience of description, a first direction is defined, which is the length direction of the tension spring 2. In the drawings, the first direction is represented as the X direction.

[0029] It should be noted that the orthopedic traction device further comprises pulleys and a support, the number of the pulleys is determined according to the need, the pulleys are connected to the support, the first rope 4 and the second rope 5 are connected to the pulleys, the pulleys are used to change the directions of the first rope 4 and the second rope 5, so as to adjust the trajectories of the first rope 4 and the second rope 5, and the pulleys and the support are not shown in the drawings.

[0030] The second rope 5 is connected to the weight 6 at one end and to the tension spring 2 at the other end. In general, it is also the first state, the weight 6 generates a fixed size of gravity, the weight 6 generates a fixed size of tension on the second rope 5, the second rope 5 generates a fixed size of tension on the tension spring 2, and the tension spring 2 is stretched to a fixed length. The tension spring 2 is connected to the first rope 4, and the tension spring 2 exerts a fixed size of tension on the first rope 4, and the first rope 4 exerts a fixed size of force on the affected part, so as to facilitate the recovery of the patient.

[0031] In the present scheme, the limiting member 3 is fixed on the tension spring 2, and in the first state, there is a gap between the limiting member 3 and the limiting member 3 along the first direction. When the tension of the second rope 5 on the tension spring 2 increases, the tension spring 2 moves away from the first rope 4 along the first direction, and the tension spring 2 is elongated, at this time, it is the second state of the tension spring 2; the tension spring 2 drives the limiting member 3 to move, and when the limiting member 3 contacts the fixed member 1, the limiting member 3 stops moving, and the tension spring 2 stops elongating, at this time, even if the tension of the second rope 5 on the tension spring 2 continues to increase, the tension spring 2 itself does not change in length along the first direction due to the obstruction of the limiting member 3, and the tension of the tension spring 2 on the first rope 4 is fixed.

[0032] It should be noted that by selecting a tension spring 2 with different elastic coefficients or adjusting the gap between the limiting member 3 and the fixed member 1 along the first direction of the tension spring 2 in the first state, the maximum tension of the tension spring 2 on the first rope 4 can be adjusted. The shaking of the weight 6 not only represents that the weight 6 is subjected to a large amplitude swing by an external force, but also includes a slight shaking of the weight 6 after being subjected to an external force, at this time, the force of the external force on the weight 6 includes a vertical downward component.

[0033] When the weight connected to the second rope is touched and shaken, the tension of the second rope on the tension spring increases, causing the tension spring to change from the first state to the second state, at this time, the tension spring is elongated, and the tension of the tension spring on the first rope increases; when the limiting member connected to the tension spring contacts the fixed member, the tension spring stops elongating, a part of the force of the second rope on the tension spring is transmitted to the fixed member through the limiting member, and the tension of the tension spring on the first rope remains unchanged. The tension on the affected part is fixed under normal circumstances, and when some unexpected situations occur, the force on the affected part is still within the set range, thereby facilitating the recovery of the affected part.

[0034] With reference to Figure 2 , as an optional solution, the limiting member 3 is fixed at the end of the tension spring 2 for connecting with the second rope 5.

[0035] When the tension spring 2 is deformed by the force of the second rope 5, the end of the tension spring 2 for connecting with the second rope 5 moves the maximum distance in the first direction, the limiting member 3 is fixed at the end of the tension spring 2 for connecting with the second rope 5, and the limiting member 3 is easy to move when the tension spring 2 is deformed, thereby improving the sensitivity of the device. When the tension spring 2 is elastically deformed, the two ends of the tension spring 2 are basically not deformed in the first direction, and the limiting member 3 is fixed at the end of the tension spring 2, thereby improving the stability of the connection between the limiting member 3 and the tension spring 2.

[0036] In another embodiment, the limiting member 3 is fixed at the middle position of the tension spring 2 in the first direction, and in another embodiment, the connection position of the limiting member 3 and the tension spring 2 can be determined according to design needs.

[0037] With reference to Figure 2 , as an optional solution, the limiting member 3 includes at least two ends for abutting against the fixing member 1, and the two ends of the limiting member 3 for abutting against the fixing member 1 are located on both sides of the tension spring 2.

[0038] Specifically, the two sides of the tension spring 2 represent a vertical plane passing through the center line of the tension spring 2, and in Figure 3 , the virtual line is used to illustrate that in this embodiment, the limiting member 3 is a rod member arranged perpendicular to the first direction. The two ends of the limiting member 3 are located on both sides of the tension spring 2.

[0039] The limiting member 3 has two ends located on both sides of the tension spring 2, and when the limiting member 3 contacts the fixing member 1, the force acting on the limiting member 3 is relatively stable, and the tension spring 2 is not easy to be deflected.

[0040] With reference to Figure 3 , in another embodiment, the limiting member 3 includes a circular ring and a cross structure fixed on the circular ring, and four end portions of the limiting member are used to contact the fixing member 1. When the limiting member 3 contacts the fixing member 1, the force between the limiting member 3 and the fixing member 1 is relatively dispersed and stable.

[0041] With reference to Figure 1 , as an optional solution, the fixing member 1 includes a base 11 and an upper cover 12, the base 11 is fixedly arranged, and the upper cover 12 is detachably connected with the base 11.

[0042] Specifically, the upper cover 12 is detachably connected with the base 11 by using a buckle, and the tension spring 2 and the limiting member 3 are arranged between the base 11 and the upper cover 12.

[0043] By detaching the upper cover 12, it is convenient to check the relative position between the tension spring 2 and the base 11.

[0044] With reference to Figure 2 As an optional solution, the fixing member 1 has a first cavity 13 for accommodating the tension spring 2.

[0045] The fixing member 1 has a first hole 14 and a second hole 15 which are in communication with the first cavity 13, the first hole 14 is for accommodating the first rope 4 to pass through, and the second hole 15 is for accommodating the second rope 5 to pass through.

[0046] The limiting member 3 is located in the first cavity 13, and the limiting member 3 can contact the side wall of the first cavity 13 in the second state.

[0047] Specifically, the base 11 is a rectangular seat, and the base 11 is provided with a cavity. The upper cover 12 is provided with a cavity. The first cavity 13 is a cylindrical cavity formed by the cavity of the base 11 and the cavity of the upper cover 12. Optionally, the upper cover 12 is a cylindrical cover body. The first cavity 13 is provided with a step at one end of the base 11 where the second hole 15 is located. When the limiting member 3 moves towards the second hole 15, the limiting member 3 contacts the step.

[0048] In use, the first rope 4 is connected with the tension spring 2 by passing through the first hole 14, and the second rope 5 is connected with the tension spring 2 by passing through the second hole 15. The tension spring 2 for fixing the limiting member 3 is placed in the first cavity 13, and the upper cover 12 is connected and fixed with the base 11 to realize the installation of the tension spring 2 and the fixing member 1.

[0049] With reference to Figure 1 As an optional solution, the fixing member 1 further comprises a first pressing member 16, a second pressing member 17 and a fastening member 18. The first pressing member 16 and the second pressing member 17 are fixed on the base 11, and the first pressing member 16 and the second pressing member 17 are oppositely arranged and used for sleeving on the bed rail 8. The fastening member 18 is threadedly connected with the first pressing member 16, and is used for abutting against the bed rail 8 to press and fix the second pressing member 17 and the fastening member 18 on the bed rail 8.

[0050] Specifically, the first pressing member 16 and the second pressing member 17 are oppositely arranged along a first direction, and the fastening member 18 is arranged along the first direction. The first pressing member 16 is a plate member fixed on the base 11, and the second pressing member 17 is a plate member fixed on the base 11.

[0051] The fastening member 18 comprises a fastening bolt and a pressing disc 181. The fastening bolt is threadedly connected with the first pressing member 16, and one end of the fastening bolt passes through the first pressing member 16 and is located between the first pressing member 16 and the second pressing member 17. The pressing disc 181 is fixedly connected to the end of the fastening bolt passing through the first pressing member 16, and the pressing disc 181 is used for contacting and pressing the bed rail 8.

[0052] The first pressing part 16 and the second pressing part 17 are sleeved on the bed rail 8, and the fastener 18 is rotated to fix the first pressing part 16 and the second pressing part 17 to the bed rail 8.

[0053] Further, the fastener 18 is provided with two, and the first pressing part 16 and the second pressing part 17 are connected with the fastener 18, and the pressure plate 181 of the two fasteners 18 is used to press against the two sides of the bed rail 8.

[0054] By adjusting the gap between the two fasteners 18, the two fasteners 18 can be pressed on the bed rail 8 or separated from the bed rail 8.

[0055] By adjusting the position of the two fasteners 18 relative to the first pressing part 16 and the second pressing part 17, the position of the base 11 relative to the bed rail 8 can be adjusted, so that the base 11 can move within a certain range in the first direction, thereby adjusting the relative position between the limiting part 3 and the fixing part 1, and adjusting the distance between the limiting part 3 and the side wall of the first cavity 13 in the first direction, thereby adjusting the distance that needs to be moved when the limiting part 3 and the fixing part 1 contact in the first direction.

[0056] Referring to Figure 1 , as an optional solution, the upper cover 12 is a transparent cover. Specifically, the upper cover 12 is a cover made of polyethylene.

[0057] The upper cover 12 is transparent, and the position of the limiting part 3 in the base 11 can be observed by the patient's family members or medical staff without disassembling the upper cover 12.

[0058] The upper cover 12 can also block foreign matter from entering the first cavity 13, reducing the occurrence of the situation that the limiting part 3 cannot move normally due to foreign matter blocking.

[0059] Referring to Figure 1 , as an optional solution, the orthopedic traction device further comprises a contact sensor 7, which is fixed on the fixing part 1 and located at a position of the fixing part 1 for contacting the limiting part 3.

[0060] Specifically, the contact sensor 7 is an electronic device that is triggered once when it is contacted. The contact sensor 7 is fixed on the fixing part 1, and in this embodiment, the contact sensor 7 is provided with two, and the two contact sensors 7 are arranged at intervals on the base 11.

[0061] When the weight 6 is accidentally touched and the patient may be in a resting state and unaware, the tension spring 2 is stretched to drive the limiting part 3 to move and contact the contact sensor 7, and the contact sensor 7 records once. When the medical staff checks the patient's condition, if it is observed that the contact sensor 7 has a record, it can be concluded that the weight 6 has been accidentally moved or the patient has moved relative to the set position, and the medical staff will consciously check the patient carefully.

[0062] The orthopedics traction device further comprises a counter, which is in signal connection with the contact sensor 7.

[0063] When the limiting piece 3 contacts the contact sensor 7 once, the contact sensor 7 sends a signal to the counter once, and the counter records once; when the limiting piece 3 contacts the contact sensor 7 again, the contact sensor 7 sends a signal to the counter once, and the counter records once, and displays twice.

[0064] If the value measured by the counter is large, it can be judged that the weight 6 may be touched or the patient moves frequently, and the position of the weight 6 needs to be adjusted or the patient needs to be given a new medical order.

[0065] In the description of the present application, it should be pointed out that the terms "upper", "lower", "inner", "outer", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the working state of the present application, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0066] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0067] The above describes the present application in combination with the preferred embodiments, but these embodiments are only exemplary and serve only to illustrate. On this basis, various substitutions and improvements can be made to the present application, and these all fall within the scope of protection of the present application.

Claims

1. A skeletal traction device, characterized by, Including fixing part (1), tension spring (2), limiting part (3), first rope (4) and second rope (5), wherein, The fixing part (1) is fixedly arranged relative to the ground; The first rope (4) is used for being connected with the patient, and the second rope (5) is used for being connected with the weight (6) to keep the weight (6) in a suspended state; One end of the tension spring (2) is fixedly connected with the first rope (4), and the other end is fixedly connected with the second rope (5); The limiting part (3) is fixedly connected with the tension spring (2) and moves along the length direction of the tension spring (2) with the expansion and contraction of the tension spring (2), and the limiting part (3) is spaced apart from the fixing part (1) in the first state and is pressed against the fixing part (1) in the second state; wherein, The first state is a state in which the weight (6) is stably suspended; The second state is a state in which when the pulling force of the second rope (5) on the tension spring (2) increases due to the shaking of the weight (6) to a set value, the tension spring (2) is elongated relative to the tension spring (2) in the first state.

2. The skeletal traction device of claim 1, wherein, The limiting part (3) is fixed on one end of the tension spring (2) for being connected with the second rope (5).

3. The skeletal traction device of claim 1, wherein, The limiting part (3) includes at least two ends for being pressed against the fixing part (1), and the two ends of the limiting part (3) for being pressed against the fixing part (1) are located on both sides of the tension spring (2).

4. The skeletal traction device of claim 1, wherein, The fixing part (1) has a first cavity (13) for accommodating the tension spring (2) thereon; The fixing part (1) is provided with a first hole (14) and a second hole (15) in communication with the first cavity (13), the first hole (14) accommodates the first rope (4) to pass through, and the second hole (15) accommodates the second rope (5) to pass through; The limiting part (3) is located in the first cavity (13), and the limiting part (3) can contact the side wall of the first cavity (13) in the second state.

5. The skeletal traction device of claim 1 wherein, The fixing part (1) includes a base (11) and an upper cover (12), the base (11) is fixedly arranged, and the upper cover (12) is detachably fixedly connected with the base (11).

6. The skeletal traction device of claim 5, wherein, The fixing part (1) further includes a first pressing part (16), a second pressing part (17) and a fastener (18); wherein, The first pressing part (16) and the second pressing part (17) are fixed on the base (11), the first pressing part (16) and the second pressing part (17) are oppositely arranged and are used for being sleeved on the bed rail (8); The fastener (18) is threadedly connected with the first pressing part (16) and is used for being pressed against the bed rail (8) to press and fix the second pressing part (17) and the fastener (18) on the bed rail (8).

7. The skeletal traction device of claim 5 wherein, The upper cover (12) is a transparent cover.

8. The skeletal traction device of claim 1 wherein, Further comprising a contact sensor (7), the contact sensor (7) is fixed on the fixing part (1) and is located at a position for contacting the limiting part (3).

9. The skeletal traction device of claim 8, wherein, Further comprising a counter, the counter is signal connected with the contact sensor (7).

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