Downward-pressing fixing type bone mineral density examination positioner

Abstract

The invention relates to the technical field of medical instruments, in particular to a pressing fixing type bone mineral density examination positioner which comprises a trapezoid frame, an inserting hole is formed in the rear end of a top plate of the trapezoid frame, a back plate is connected to the rear end of the trapezoid frame, a long inserting groove is vertically formed in the middle of the back plate, the long inserting groove is communicated with the inserting hole, and the width of the long inserting groove is smaller than that of the inserting hole. Positioning pressing rods are inserted into the long inserting grooves and the inserting holes, pulleys are connected to the two sides of the middle of each long inserting groove, push rod connecting rods are rotationally connected to the two ends of the front face of the lower portion of the back plate respectively, push rod pieces are perpendicularly and rotationally connected to the front faces of the upper ends of the push rod connecting rods, and a pull rope is connected between the rear ends of the two push rod pieces. And the middle part of the pull rope is in contact with the upper surface of the pulley and the lower end of the positioning pressing rod. The device is simple in structure and low in cost, positioning is more stable and reliable in the inspection process, more effective positioning of the two feet can be completed only through one downward pressing action, operation is easy and convenient, time is saved, and efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a downward-pressing fixed bone density inspection positioner. Background Art

[0002] When doing a bone density test, it is necessary to take pictures of bones with thin cortical bone and high cancellous bone content to calculate the bone content. Usually, the two hip joints and lumbar vertebrae are selected. Usually, the patient is required to internally rotate both feet 15° to 20°, so that the femoral shaft can be internally rotated and the lesser trochanter is exposed as little as possible. When operating, medical staff will generally tie the examinee's feet on both sides of the ladder frame. However, the current ladder frame has the following major problems when in use: 1. The binding is easy to loosen, affecting the quality of the examination; 2. During the binding operation, it is necessary to find the end of the binding belt, then hold down one foot of the examinee to wrap it around and position it, and then wrap it around and position the other foot. The positioning operation has many steps and each link is not convenient to operate, resulting in a cumbersome and time-consuming positioning process.

[0003] Therefore, it is very necessary to solve this problem. Summary of the invention

[0004] The purpose of the present invention includes providing a downward-pressing fixed bone density examination positioner which has stable and reliable positioning during the examination process and can complete more effective positioning of both feet with only one downward-pressing action.

[0005] In order to achieve the above object, the present invention has the following technical solutions:

[0006] The present invention provides a downward-pressing fixed bone density inspection locator, comprising a ladder frame, a top plate rear end of the ladder frame is provided with a plug hole, the rear end of the ladder frame is connected to a back plate, a middle portion of the back plate is vertically provided with a long slot which is in communication with the plug hole and has a width smaller than the width of the plug hole, a positioning pressure rod is inserted in the long slot and the plug hole, pulleys are connected to the two sides of the middle portion of the long slot, push rod connecting rods are rotatably connected to the two ends of the lower front portion of the back plate, a push rod member is vertically rotatably connected to the upper end front portion of the push rod connecting rod, a pull rope is connected between the rear ends of the two push rod members, and the middle portion of the pull rope contacts the upper surface of the pulley and the lower end of the positioning pressure rod.

[0007] Preferably, the positioning pressure rod comprises a sliding rod, two wedging columns and a control rod, wherein:

[0008] The sliding rod comprises an I-shaped plug rod with a hole at the axial center, the cross-section of the I-shaped plug rod is an "I" shape that can be inserted into the long slot and the plug hole, the upper end of the I-shaped plug rod is provided with a handle, the lower end is connected to a trapezoidal wedge block, and a slot hole is provided between the trapezoidal wedge block and the lower end of the I-shaped plug rod;

[0009] The control rod comprises a connecting rod for slidingly inserting into the axial hole of the I-shaped inserting rod, an upper cross bar connected to the upper end of the connecting rod and close to the handle, and a lower cross bar connected to the lower end of the connecting rod and passing through the slot hole, and magnets are connected to both ends of the lower cross bar, and the magnets can attract the wedge-tightening column within a short distance;

[0010] The two wedging columns are both arranged in the long slot, and the outer peripheral surfaces of the two wedging columns are respectively in contact with an inclined surface of the trapezoidal wedge block.

[0011] Preferably, a thumbtack for pressing down the pull rope is connected to the rear of the lower part of the I-shaped insertion rod.

[0012] Preferably, the wedging column is an iron column whose length is smaller than the width of the grooves on both sides of the I-shaped insertion rod.

[0013] Preferably, a tension spring connecting groove is provided at the upper end of the trapezoidal wedge block, the bottom of the tension spring connecting groove is connected to one end of the tension spring, and the other end of the tension spring is connected to the lower cross bar.

[0014] Preferably, the push rod member comprises a push rod for pushing the foot toward the inclined side plate of the ladder frame, and an ear plate connected to one end of the push rod close to the push rod connecting rod for connecting the pull rope.

[0015] Preferably, the pull rope is a steel wire rope.

[0016] Preferably, the push rod is a straight rod that is thin in the middle and thick at both ends.

[0017] Preferably, the push rod has a circular cross section.

[0018] Preferably, the push rod is vertically rotatably connected to the upper end of the push rod connecting rod through a push rod shaft.

[0019] Preferably, a return spring is connected between the push rod connecting rod and the back plate.

[0020] Preferably, a limiting protrusion for limiting the I-shaped insertion rod from coming out or excessively extending out of the insertion hole is connected to the front of the lower portion of the I-shaped insertion rod.

[0021] Preferably, the limiting protrusion is a screw.

[0022] Preferably, both ends of the back plate are provided with a limiting edge for limiting the push rod connecting rod and a stop edge for limiting one end of the return spring.

[0023] Preferably, a non-slip foot pad is connected to the lower end of the ladder frame.

[0024] Preferably, the anti-slip foot pad is made of rubber.

[0025] Due to the adoption of the above technical solution, the advantages of the present invention are:

[0026] 1. When the present invention is used to position the feet of the examinee, after the examinee puts the feet between the push rod and the inclined side plate, it is only necessary to press down the handle until the examinee's feet are fixed and limited between the push rod and the inclined side plate. There is no loose or unstable binding, and the positioning is stable and reliable. It not only solves the problem that the prior art uses binding belts to bind and fix the two feet separately, which is prone to loose binding and affects the examination results, but also the fixing operation only requires a relaxed downward action to quickly complete the more effective positioning of the two feet, eliminating the prior art of finding the end of the binding belt, pressing the examinee's feet to wrap and fix them, and fixing the single feet one by one. It can save about 3 times more positioning time than the prior art, and the operation is simple and convenient, time-saving and efficient.

[0027] 2. The present invention contacts the examination bed surface through the lower end of the inclined side plate, thereby avoiding the problem of easy movement when the lower panel of the ladder frame contacts the examination bed surface in the prior art. In addition, the present invention sleeves an anti-skid foot pad on the lower end of the inclined side plate, further improving the problem of the ladder frame sliding, avoiding the examinee from deviating from the examination center line, and helping to ensure the quality of the examination.

[0028] 3. The positioning pressure rod provided by the present invention adopts a wedge-tightening column to position the trapezoidal wedge block in an infinitely clamped manner, thereby achieving infinitely adjustable spacing between the push rod and the inclined side plate, thereby being able to effectively position feet of different sizes, thereby meeting the inspection needs of different groups of people and being well adapted.

[0029] 4. When the present invention is used for positioning, the examinee does not need to lift his feet, so it is easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A front view schematic diagram of a downward-pressing fixed bone density testing positioner provided in an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0033] Figure 3 for Figure 2 A longitudinal side section diagram of

[0034] Figure 4 for Figure 1A top view schematic diagram of the connection relationship between the ladder frame and the back plate;

[0035] Figure 5 for Figure 1 A rear view schematic diagram of

[0036] Figure 6 For the general Figure 5 A schematic diagram of the state after the upper crossbar and the upper part of the handle are held close to and the handle is pressed down for a certain distance;

[0037] Figure 7 This is a schematic diagram of the examinee placing his feet between the putter and the inclined side board;

[0038] Figure 8 For the general Figure 7 Schematic diagram of the state after the upper horizontal bar and the upper part of the handle are held close to and the handle is pressed down until the push rod puts the inner side of the examinee's foot on the inclined side board and is positioned.

[0039] In the figure: 1, pull rope; 2, rotating shaft; 3, limiting convex; 4, pulley shaft; 5, thumbtack; 6, pulley; 7, push rod shaft; 8, push rod connecting rod; 9, tension spring; 10, ladder frame; 11, top plate; 111, plug hole; 12, inclined side plate; 121, non-slip foot pad; 20, back plate; 21, long slot; 22, rotating shaft connecting hole; 23, shaft connecting hole; 24, limiting edge; 25, stop edge; 30, push rod member; 31, push rod; 3 2. Ear plate; 40. Positioning pressure rod; 41. Sliding rod; 411. Handle; 412. I-shaped plug rod; 4121. Trapezoidal wedge block; 4122. Slot hole; 4123. Tension spring connecting groove; 42. Control lever; 421. Upper cross bar; 422. Connecting rod; 423. Lower cross bar; 50. Return spring; 60. Wedge-tightening column; 70. Magnet; 100. Press-down fixed bone density examination locator (abbreviated as: locator); 200. Foot. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", "left", "right", "front", "back" and the like appear to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0042] The specific implementation method is now described as follows:

[0043] An embodiment of a downward fixed bone density inspection positioner 100 provided by the present invention is shown in FIG. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , comprising a ladder frame 10, a top plate 11 of the ladder frame 10 having a plug hole 111 at the rear end, a non-slip foot pad 121 sleeved at the lower end of the inclined side plate 12 of the ladder frame 10, and a back plate 20 connected to the rear end of the ladder frame 10,

[0044] Both ends of the back plate 20 are bent with limiting edges 24 and blocking edges 25. A long slot 21 is vertically provided in the middle of the back plate 20, which is connected to the insertion hole 111 and has a width less than the width of the insertion hole 111. A positioning pressure rod 40 is inserted into the long slot 21 and the insertion hole 111. Pulleys 6 are connected to both sides of the middle of the long slot 21. Push rod connecting rods 8 are rotatably connected to the two ends of the front of the lower part of the back plate 20. A return spring 50 is connected between the push rod connecting rod 8 and the blocking edge 25. The upper end of the push rod connecting rod 8 is connected to a push rod member 30. A pull rope 1 is connected between the rear ends of the two push rod members 30. The middle part of the pull rope 1 contacts the upper side of the pulley 6 and the lower end of the positioning pressure rod 40.

[0045] The positioning pressure rod 40 includes a sliding rod 41, two wedging columns 60 and a control rod 42, wherein:

[0046] The sliding rod 41 includes an I-shaped plug rod 412 with a hole in the axial center. The cross-sectional shape of the I-shaped plug rod 412 is an "I" shape that can be inserted into the long slot 21 and the plug hole 111. The front of the middle part of the I-shaped plug rod 412 is connected to a limiting protrusion 3, and the rear of the lower part is fixedly welded with a thumbtack 5. The upper end of the I-shaped plug rod 412 is provided with a handle 411, and the lower end is connected with a trapezoidal wedge block 4121. The upper end of the trapezoidal wedge block 4121 is provided with a tension spring connecting groove 4123, and the bottom of the tension spring connecting groove 4123 is connected to the lower end of the tension spring 9. A slot hole 4122 is provided between the upper end of the trapezoidal wedge block 4121 and the lower end of the I-shaped plug rod 412; The control rod 42 includes a connecting rod 422 for slidingly inserting into the axial hole of the I-shaped insertion rod 412, an upper cross bar 421 connected to the upper end of the connecting rod 422 and close to the handle 411, and a lower cross bar 423 connected to the lower end of the connecting rod 422 and passing through the slot 4122. The lower side of the lower cross bar 423 is connected to the upper end of the tension spring 9, and magnets 70 are connected to both ends of the lower cross bar 423. The magnets 70 can attract the wedging columns 60 within a short distance; the two wedging columns 60 are both arranged in the long slot 21, and the outer peripheral surfaces of the two wedging columns 60 are respectively in contact with an inclined surface of the trapezoidal wedge block 4121.

[0047] The push rod member 30 includes a push rod 31 and an ear plate 32 connected to one end of the push rod 31 close to the push rod connecting rod 8 for connecting the pull rope 1. The push rod 31 is a straight rod with a thin middle and thick ends and a circular cross-section. The push rod 31 is vertically rotatably connected to the front of the upper end of the push rod connecting rod 8 through the push rod shaft 7.

[0048] In this embodiment, the wedging column 60 is an iron column whose length is smaller than the width of the grooves on both sides of the I-shaped insertion rod 412; the pull rope 1 is a steel wire rope; the limiting protrusion 3 is a screw; the push rod 31 is made of nylon or polypropylene plastic; and the anti-slip foot pad 121 is made of rubber.

[0049] The principle of positioning adjustment achieved by the positioning pressure rod 40 included in the present invention is as follows:

[0050] The one-way clamping principle is adopted. Specifically, when the upper crossbar 421 is not subjected to the upward force, the gravity of the control rod 42 and the tension spring 9 act on the lower crossbar 423, and the lower crossbar 423 presses the wedge-tightening column 60 to the end surface of the long slot 21 and the inclined surface of the trapezoidal wedge block 4121, so that the trapezoidal wedge block 4121 is clamped and difficult to move upward, that is, the positioning pressure rod 40 is difficult to move upward. When the positioning pressure rod 40 needs to be moved upward, the upper crossbar 421 is held against the handle 411, and then the handle 411 is pressed downward (to release the wedge-tightening column 60 from being clamped, and at the same time, the released wedge-tightening column 60 will be attracted by the magnet 70 to the bottom of the lower crossbar 423 and leave the end surface of the long slot 21 and the inclined surface of the trapezoidal wedge block 4121) and then lifted to the end (at this time, the limit protrusion 3 contacts the bottom of the top plate 11).

[0051] Alternatively, the handle 411 may be grasped and pressed downward (to release the wedging column 60 from being clamped), and then the upper cross bar 421 may be grasped toward the handle 411 and then lifted upward.

[0052] The present invention realizes the principle of positioning the feet of the examinee:

[0053] When the positioning pressure rod 40 is pressed down, the lower end of the I-shaped insertion rod 412 drives the thumbtack 5 to press down the middle part of the pull rope 1, so that the two ends of the pull rope 1 are contracted, and the two ends of the pull rope 1 pull the push rod 31 toward the inclined side plate 12 through the ear plate 32 (at this time, the push rod 31 drives the push rod connecting rod 8 to swing toward the inclined side plate 12, so that the return spring 50 connected between the push rod connecting rod 8 and the retaining edge 25 is compressed), thereby realizing that the push rod 31 can push the forefoot of the examinee toward the inclined side plate 12, and the examinee's foot is confined between the push rod 31 and the inclined side plate 12 and positioned.

[0054] The method of using the present invention:

[0055] S1. Place the examinee's foot 200 between the push rod 31 and the inclined side plate 12. Figure 7 ;

[0056] S2. The medical staff presses down the positioning rod 40 by hand until the inner side of the examinee's foot contacts or abuts against the inclined side plate 12. The positioning is completed and the examinee's bone density can be checked. Figure 8 ;

[0057] S3. After the bone density test is completed, the positioning pressure rod 40 is lifted up to the end (at this time, the pull rope 1 is no longer under pressure, the push rod connecting rod 8 swings toward the limit edge 24 under the restoring force of the reset spring 50, the pull rope 1 is stretched, and the push rod 31 is away from the inclined side plate 12), and then the examinee can move the foot 200 away from the present invention.

[0058] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A downward fixed bone density inspection positioner (100), comprising a ladder frame (10), characterized in that: The rear end of the top plate (11) of the ladder frame (10) is provided with a plug hole (111), and the rear end of the ladder frame (10) is connected to a back plate (20). A long slot (21) which is in communication with the plug hole (111) and has a width smaller than the width of the plug hole (111) is vertically provided in the middle of the back plate (20). A positioning pressure rod (40) is inserted into the long slot (21) and the plug hole (111). Pulleys (6) are connected to both sides of the middle of the long slot (21). Push rod connecting rods (8) are rotatably connected to the two ends of the front of the lower part of the back plate (20). The upper end of the push rod connecting rod (8) is vertically rotatably connected to a push rod member (30). A pull rope (1) is connected between the rear ends of the two push rod members (30), and the middle of the pull rope (1) contacts the upper surface of the pulley (6) and the lower end of the positioning pressure rod (40).

2. The downward-pressing fixed bone density examination positioner (100) according to claim 1, characterized in that: The positioning pressure rod (40) comprises a sliding rod (41), two wedging columns (60) and a control rod (42), wherein: The sliding rod (41) comprises an I-shaped insert rod (412) having a hole at its axial center, the cross-section of the I-shaped insert rod (412) being in the shape of an "I" that can be inserted into the long slot (21) and the insert hole (111), a handle (411) being provided at the upper end of the I-shaped insert rod (412), and a trapezoidal wedge block (4121) being connected to the lower end, and a slot hole (4122) being provided between the trapezoidal wedge block (4121) and the lower end of the I-shaped insert rod (412); The control rod (42) comprises a connecting rod (422) for slidingly inserting into the axial hole of the I-shaped inserting rod (412), an upper cross bar (421) connected to the upper end of the connecting rod (422) and close to the handle (411), and a lower cross bar (423) connected to the lower end of the connecting rod (422) and passing through the slot (4122), and magnets (70) are connected to both ends of the lower cross bar (423), and the magnets (70) can attract the wedge-tightening column (60) within a short distance; The two wedging columns (60) are both arranged in the long slot (21), and the outer peripheral surfaces of the two wedging columns (60) are respectively in contact with an inclined surface of the trapezoidal wedge block (4121).

3. The downward-pressing fixed bone density examination positioner (100) as claimed in claim 2, characterized in that: The wedging column (60) is an iron column with a length smaller than the width of the grooves on both sides of the I-shaped insertion rod (412).

4. The downward-pressing fixed bone density examination positioner (100) according to claim 2, characterized in that: The upper end of the trapezoidal wedge block (4121) is provided with a tension spring connecting groove (4123), the bottom of the tension spring connecting groove (4123) is connected to one end of the tension spring (9), and the other end of the tension spring (9) is connected to the lower cross bar (423).

5. The downward-pressing fixed bone density examination positioner (100) according to claim 1, characterized in that: The push rod member (30) comprises a push rod (31) and an ear plate (32) connected to one end of the push rod (31) close to the push rod connecting rod (8) and used for connecting the pull rope (1).

6. The downward-pressing fixed bone density examination positioner (100) according to claim 1, characterized in that: The pull rope (1) is a steel wire rope.

7. The downward-pressing fixed bone density examination positioner (100) according to claim 5, characterized in that: The push rod (31) is a straight rod that is thin in the middle and thick at both ends.

8. The downward-pressing fixed bone density examination positioner (100) according to claim 1, characterized in that: A return spring (50) is connected between the push rod connecting rod (8) and the back plate (20).

9. The downward-pressing fixed bone density examination positioner (100) according to claim 2 or 3, characterized in that: The front lower portion of the I-shaped insertion rod (412) is connected to a limiting protrusion (3).

10. The downward-pressing fixed bone density examination positioner (100) according to claim 1, characterized in that: The lower end of the ladder frame (10) is connected to an anti-skid foot pad (121).

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