Torque handle

Abstract

The present invention relates to the technical field of handles, and discloses a torque handle, which solves the problem that in the process of installing a bone screw with a general handle, if the force of the handle is too large when it is rotated, the bone tissue will be caused to burst when the bone screw is tightened. In order to avoid the phenomenon of bone bursting, the doctor can tighten the screw more efficiently and safely. The handle comprises a handle, wherein an adjusting cap is symmetrically installed inside the handle, an adjusting spring is installed on one side of the adjusting cap, a limiting member is installed at one end of the adjusting spring, a positioning rod inserted in the adjusting spring is installed on the limiting member, a rotating member installed at the center of the handle is provided on one side of the limiting member, the rotating member is installed on the inner core, and an outer sleeve and a positioning component are installed on the inner core; the present invention can play a good protective effect in the process of installing the bone screw through the coordinated use of the gear, rack, adjusting cap, adjusting spring and handle, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of handles, in particular to a torque handle. Background Art

[0002] Bone nails are non-active surgical metal implants for bone joining, consisting of cortical bone nails (full thread and semi-thread) and cancellous bone nails (full thread and semi-thread). They are used to stabilize new fractures, revision surgery, joint fusion, and reconstruction of small bones of the foot, ankle and toes. They can be used for adult and pediatric patients. A handle tool is required during the installation process.

[0003] In the process of installing the bone screw, if the handle is rotated with too much force, the bone tissue may burst when the bone screw is tightened. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a torque handle, which effectively solves the problem that if the force of the handle is too large when the bone screw is tightened during the installation of the bone screw, the bone tissue will burst.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a torque handle, comprising a handle, an adjusting cap symmetrically installed inside the handle, an adjusting spring installed on one side of the adjusting cap, a limiting member installed at one end of the adjusting spring, a positioning rod inserted into the adjusting spring installed on the limiting member, a rotating member installed at the center of the handle on one side of the limiting member, the rotating member installed on the inner core, an outer sleeve and a positioning assembly installed on the inner core, and the positioning assembly is located at the bottom end of the outer sleeve.

[0006] Preferably, the adjusting cap, adjusting spring, limiting member and positioning rod are all symmetrically arranged with the rotating member as the center, wherein the limiting member is a rack, the rotating member is a gear, and the rack and the gear are meshingly connected.

[0007] Preferably, the limiting member comprises a push block, a first groove is formed on one side of the push block, a ball is installed in the first groove, and the rotating member comprises a turntable, and second grooves matching the ball are formed at equal intervals on the outer wall of the turntable.

[0008] Preferably, a slide plate is also installed on the push block, a round hole matched with the ball bearing is formed on the outer wall of the handle, and strip grooves matched with the slide plate are formed on both sides of the round hole.

[0009] Preferably, the positioning assembly includes a ferrule, a tube body connected to the inner core is provided inside the ferrule, a return spring is sleeved on the tube body, through holes are provided on both sides of the tube body, glass beads are installed in the through holes, and a groove matched with the glass beads is also provided on the inner side wall of the ferrule, a retaining ring is also installed at the bottom end of the tube body, and the retaining ring is located at the bottom end of the ferrule, and a locator is also installed inside the tube body.

[0010] Preferably, the cross-sectional shape of the through hole is a trapezoidal structure, and the opening size at one end of the through hole is larger than the diameter size of the glass bead, and the opening size at the other end of the through hole is smaller than the diameter size of the glass bead.

[0011] Preferably, the cross-sectional shape of the through groove formed inside the tube body is an inverted T-shaped structure, the positioner includes a limit block, and the cross-sectional shape of the limit block is a square structure.

[0012] Preferably, the positioner includes an elastic member, which is installed in a second mounting groove, which is opened on the inner core, connecting rods are installed at both ends of the elastic member, and a first rod body and a second rod body are respectively installed at one end of the connecting rod, the second rod body is installed on the outer plate body, the outer plate body is installed in the first mounting groove, the first mounting groove is opened in the tube body, and the first rod body is connected to the first mounting groove.

[0013] Preferably, the elastic member includes a folding rod, telescopic springs are equidistantly installed inside the folding rod, upper sliders are equidistantly installed at the top of the folding rod, the upper sliders are installed in the second installation groove, and lower sliders are equidistantly installed at the bottom end of the folding rod, the lower sliders are installed inside the T-shaped slot, and the T-shaped slot is opened inside the pressure plate.

[0014] Preferably, the two lower sliding blocks located in the middle are both mounted with moving blocks, the moving blocks are mounted with inner plates, and the two moving blocks are slidably mounted in the T-shaped grooves.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) During operation, by using the gear, rack, adjustment cap, adjustment spring and handle together, the rotation force of the handle can be kept within a constant range when the fixing screw is turned by the handle, thereby achieving a good protective effect during the installation of the bone screw;

[0017] 2) During operation, the ball bearing, the second groove, the slide plate and the round hole are used in coordination, so that the friction force when the handle is rotated can be reduced by the ball bearing, thereby extending the use time of the handle. At the same time, the ball bearing can be replaced according to actual needs, thereby extending the use time of the handle and saving costs;

[0018] 3) During work, the installation and removal of bone screws can be completed quickly through the positioning assembly, and the operation is relatively convenient;

[0019] 4) During operation, the bone screw can be fixed from different directions by using the elastic member, the connecting rod and the first rod body. The use of the telescopic spring can improve the fixing effect of the bone screw and avoid loosening, thereby affecting the installation process of the bone screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the positioning component of the present invention;

[0023] Figure 3 It is a schematic diagram of the installation structure of the positioner of the present invention;

[0024] Figure 4 This is one of the schematic diagrams of the limiter structure of the present invention;

[0025] Figure 5 This is the second schematic diagram of the limiter structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the positioner of the present invention;

[0027] Figure 7 It is a schematic diagram of the elastic member structure of the present invention.

[0028] In the figure: 1, handle; 101, round hole; 102, strip groove; 2, adjustment cap; 3, adjustment spring; 4, stopper; 401, push block; 402, first groove; 403, ball; 404, slide plate; 5, positioning rod; 6, rotating member; 601, turntable; 602, second groove; 7, inner core; 8, outer sleeve; 9, positioning assembly; 901, ferrule; 902, tube body; 903, reset spring; 904, through hole; 905, glass bead; 906 , slot; 907, retaining ring; 10, positioner; 1001, elastic member; 1011, folding rod; 1012, telescopic spring; 1013, upper slider; 1014, lower slider; 1015, T-slot; 1016, pressure plate; 1017, moving block; 1018, inner plate; 1002, connecting rod; 1003, first rod; 1004, second rod; 1005, outer plate; 1006, first mounting groove; 1007, second mounting groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, by Figure 1-7 The present invention comprises a handle 1, an adjusting cap 2 is symmetrically installed inside the handle 1, an adjusting spring 3 is installed on one side of the adjusting cap 2, a limiting member 4 is installed on one end of the adjusting spring 3, a positioning rod 5 inserted into the adjusting spring 3 is installed on the limiting member 4, a rotating member 6 installed at the center of the handle 1 is provided on one side of the limiting member 4, the rotating member 6 is installed on the inner core 7, an outer sleeve 8 and a positioning assembly 9 are installed on the inner core 7, and the positioning assembly 9 is located at the bottom end of the outer sleeve 8;

[0031] The adjusting cap 2 can be rotated by a tool, and the adjusting cap 2 squeezes the limit member 4 through the adjusting spring 3, and the limit member 4 squeezes the rotating member 6. In conjunction with an external pressure detection instrument, the squeezing force of the limit member 4 on the rotating member 6 can be adjusted according to actual needs, thereby achieving the pressure value when the handle 1 is rotated; when in use, the bone nail screw is first installed in the positioning assembly 9, and then the handle 1 drives the limit member 4 therein to rotate, and the limit member 4 drives the rotating member 6 to rotate, thereby driving the bone nail screw to rotate. When the rotation force of the handle 1 is too large, the rotating member 6 squeezes out the limit member 4, and the limit member 4 no longer limits the rotating member 6, thereby ensuring that the rotation force of the handle 1 is within a constant range, thereby playing a good protective role.

[0032] Embodiment 2, on the basis of embodiment 1, the adjusting cap 2, the adjusting spring 3, the limiting member 4 and the positioning rod 5 are all symmetrically arranged with the rotating member 6 as the center, wherein the limiting member 4 is a rack, the rotating member 6 is a gear, and the rack and the gear are meshed and connected;

[0033] When the force of turning the handle 1 is within a constant pressure value, the rack can drive the gear to rotate, thereby driving the bone screw to rotate. When the pressure on the bone screw is too great, the gear will no longer rotate, and the edge of the gear will squeeze the rack, causing the rack to shrink into the inside of the handle 1. At this time, when the handle 1 is turned, the rack enters the tooth groove of the next gear, and the cycle continues. The rack and the gear slip, causing the handle 1 to slip, thereby ensuring that the force of turning the handle 1 is within a constant range.

[0034] Embodiment 3, on the basis of embodiment 1, the limiting member 4 includes a push block 401, a first groove 402 is formed on one side of the push block 401, a ball 403 is installed in the first groove 402, the rotating member 6 includes a turntable 601, the outer wall of the turntable 601 is equidistantly formed with second grooves 602 adapted to the ball 403, a slide plate 404 is further installed on the push block 401, a circular hole 101 adapted to the ball 403 is formed on the outer wall of the handle 1, and strip grooves 102 adapted to the slide plate 404 are formed on both sides of the circular hole 101;

[0035] When the force of rotating the handle 1 is within a constant pressure value, the ball 403 in the push block 401 can drive the turntable 601 to rotate, thereby driving the bone screw to rotate. When the pressure on the bone screw is too large, the turntable 601 stops rotating, causing the push block 401 to shrink into the inside of the handle 1. At this time, the handle 1 is rotated, and the ball 403 enters the next second groove 602. The cycle action causes the ball 403 and the turntable 601 to slip, thereby causing the handle 1 to slip, thereby ensuring that the force of rotating the handle 1 is within a constant range. At the same time, due to the coordinated use of the ball 403 and the second groove 602, the friction can be reduced, thereby extending the use time of the handle 1.

[0036] When the ball 403 needs to be replaced, just tilt the handle 1 and then push the slide plate 404. After the push block 401 falls, the first groove 402 thereon is aligned with the circular hole 101. Then, the ball 403 can pass through the circular hole 101 under its own weight, and then the new ball 403 can be placed in the push block 401 through the circular hole 101. Under the action of the adjustment spring 3, the push block 401 drives the ball 403 to return to its original position.

[0037] Embodiment 4, on the basis of embodiment 1, the positioning assembly 9 includes a ferrule 901, a tube body 902 connected to the inner core 7 is provided inside the ferrule 901, a return spring 903 is sleeved on the tube body 902, through holes 904 are provided on both sides of the tube body 902, glass beads 905 are installed in the through holes 904, and a card groove 906 adapted to the glass beads 905 is also provided on the inner side wall of the ferrule 901, wherein a retaining ring 907 is also installed at the bottom end of the tube body 902, The retaining ring 907 is located at the bottom end of the ferrule 901, and a positioner 10 is installed inside the tube body 902. The cross-sectional shape of the through hole 904 is a trapezoidal structure, and the opening size of one end of the through hole 904 is larger than the diameter size of the glass bead 905, and the opening size of the other end of the through hole 904 is smaller than the diameter size of the glass bead 905. The cross-sectional shape of the through groove formed inside the tube body 902 is an inverted T-shaped structure, and the positioner 10 includes a limit block, and the cross-sectional shape of the limit block is a square structure;

[0038] First, pull the clamping sleeve 901 upward to align the clamping slot 906 with the through hole 904. The clamping slot 906 is a ring structure. At this time, due to the uneven hole wall of the through hole 904, the glass bead 905 partially falls into the clamping slot 906 under the action of its own weight. Then insert the bone screw into the tube body 902, insert the limit block into the square groove at the top of the bone screw to prevent it from rotating, and then loosen the clamping sleeve 901. Under the action of the reset spring 903, the clamping sleeve 901 moves and the clamping slot 906 is aligned. The glass bead 905 is squeezed to move toward the inside of the tube body 902, so that the glass bead 905 is engaged with the arc groove on the outer wall of the bone screw, thereby completing the installation of the bone screw. When it needs to be removed, just pull the clamping sleeve 901 upward to align the groove 906 with the through hole 904. The glass bead 905 partially falls into the groove 906 under the action of its own weight. The glass bead 905 no longer limits the bone screw, and the bone screw can be directly taken out, which is more convenient to operate.

[0039] Embodiment 5, on the basis of embodiment 1, the positioner 10 includes an elastic member 1001, the elastic member 1001 is installed in the second installation groove 1007, the second installation groove 1007 is provided on the inner core 7, both ends of the elastic member 1001 are provided with connecting rods 1002, one end of the connecting rod 1002 is provided with a first rod body 1003 and a second rod body 1004, the second rod body 1004 is provided on the outer plate body 1005, the outer plate body 1005 is provided in the first installation groove 1006, the first installation groove 1006 is provided in the tube body 902, and the first rod body 1003 is connected to the first installation groove 1006, the elastic member 1001 includes A folding rod 1011 is included, and a telescopic spring 1012 is equidistantly installed inside the folding rod 1011. An upper slider 1013 is equidistantly installed at the top of the folding rod 1011, and the upper slider 1013 is installed in the second installation groove 1007. A lower slider 1014 is equidistantly installed at the bottom of the folding rod 1011, and the lower slider 1014 is installed inside the T-shaped groove 1015. The T-shaped groove 1015 is opened inside the pressure plate 1016. The two lower sliders 1014 located in the middle are both installed with moving blocks 1017, and the moving blocks 1017 are installed with inner plates 1018, and the two moving blocks 1017 are slidably installed in the T-shaped groove 1015.

[0040] When the bone screw is inserted into the tube body 902, it will squeeze the pressure plate 1016, and the pressure plate 1016 will squeeze the folding rod 1011 and move its two ends outward, and at the same time, it will drive the lower sliding block 1014 in the middle to move, and the lower sliding block 1014 drives the inner plate body 1018 to move by driving the moving block 1017, so that the two inner plate bodies 1018 move toward each other, and the square groove of the bone screw is fixed. At the same time, the folding rod 1011 drives the first rod body 1003 and the second rod body 1004 to move by driving the connecting rod 1002, so that the outer plate body 1005 fixes the bone screw from the outside, and is used in conjunction with the telescopic spring 1012 to improve the effect of fixing the bone screw.

[0041] Working principle: When working, first pull the clamping sleeve 901 upward to align the clamping slot 906 with the through hole 904. The clamping slot 906 is a ring structure. At this time, due to the uneven hole wall of the through hole 904, the glass bead 905 partially falls into the clamping slot 906 under the action of its own weight. Then insert the bone screw into the tube body 902, insert the limit block into the square groove at the top of the bone screw to prevent it from rotating, and then loosen the clamping sleeve 901. Under the action of the reset spring 903, the clamping sleeve 901 moves to the clamping slot 906 squeezes the glass bead 905, causing the glass bead 905 to move toward the inside of the tube body 902, so that the glass bead 905 is engaged with the arc groove on the outer wall of the bone screw, thereby completing the installation of the bone screw. When it is necessary to remove it, just pull the sleeve 901 upwards to align the groove 906 with the through hole 904. The glass bead 905 partially falls into the groove 906 under the action of its own weight. The glass bead 905 no longer limits the bone screw, and the bone screw can be directly taken out, which is more convenient to operate.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A torque handle for installing a bone screw, comprising a handle (1), characterized in that: An adjusting cap (2) is symmetrically mounted inside the handle (1), an adjusting spring (3) is mounted on one side of the adjusting cap (2), a limiting member (4) is mounted on one end of the adjusting spring (3), a positioning rod (5) inserted into the adjusting spring (3) is mounted on the limiting member (4), a rotating member (6) mounted at the center of the handle (1) is provided on one side of the limiting member (4), the rotating member (6) is mounted on an inner core (7), an outer sleeve (8) and a positioning assembly (9) are mounted on the inner core (7), and the positioning assembly (9) is located at the bottom end of the outer sleeve (8); the adjusting cap (2), the adjusting spring (3), the limiting member (4) and the positioning rod (5) are all symmetrically arranged with the rotating member (6) as the center, wherein the limiting member (6) is mounted on the inner core (7), and the positioning assembly (9) is located at the bottom end of the outer sleeve (8); 4) a rack is adopted, and the rotating member (6) adopts a gear, and the rack and the gear are meshingly connected; the limiting member (4) comprises a push block (401), a first groove (402) is formed on one side of the push block (401), a ball (403) is installed in the first groove (402), and the rotating member (6) comprises a rotating disk (601), and second grooves (602) matching the ball (403) are formed on the outer wall of the rotating disk (601) at equal intervals; a slide plate (404) is also installed on the push block (401), a circular hole (101) matching the ball (403) is formed on the outer wall of the handle (1), and strip grooves (102) matching the slide plate (404) are formed on both sides of the circular hole (101).

2. The torque handle for installing the bone screw according to claim 1, characterized in that: The positioning assembly (9) comprises a ferrule (901), wherein a tube body (902) connected to an inner core (7) is provided inside the ferrule (901), a return spring (903) is sleeved on the tube body (902), through holes (904) are provided on both sides of the tube body (902), glass beads (905) are installed in the through holes (904), and a groove (906) adapted to the glass beads (905) is provided on the inner side wall of the ferrule (901), wherein a retaining ring (907) is also installed at the bottom end of the tube body (902), and the retaining ring (907) is located at the bottom end of the ferrule (901), and a positioner (10) is also installed inside the tube body (902).

3. The torque handle for installing the bone screw according to claim 2, characterized in that: The cross-sectional shape of the through hole (904) is a trapezoidal structure, and the hole size at one end of the through hole (904) is larger than the diameter size of the glass bead (905), while the hole size at the other end of the through hole (904) is smaller than the diameter size of the glass bead (905).

4. The torque handle for installing a bone screw according to claim 3, characterized in that: The cross-sectional shape of the through groove formed inside the tube body (902) is an inverted T-shaped structure, and the positioner (10) comprises a limit block, and the cross-sectional shape of the limit block is a square structure.

5. The torque handle for installing a bone screw according to claim 4, characterized in that: The positioner (10) comprises an elastic member (1001), the elastic member (1001) is installed in a second installation groove (1007), the second installation groove (1007) is opened on the inner core (7), connecting rods (1002) are installed at both ends of the elastic member (1001), one end of the connecting rod (1002) is respectively installed with a first rod body (1003) and a second rod body (1004), the second rod body (1004) is installed on an outer plate body (1005), the outer plate body (1005) is installed in a first installation groove (1006), the first installation groove (1006) is opened in the tube body (902), and the first rod body (1003) is connected to the first installation groove (1006).

6. The torque handle for installing the bone screw according to claim 5, characterized in that: The elastic member (1001) comprises a folding rod (1011), a telescopic spring (1012) is equidistantly installed inside the folding rod (1011), an upper slider (1013) is equidistantly installed at the top of the folding rod (1011), the upper slider (1013) is installed in the second installation groove (1007), a lower slider (1014) is equidistantly installed at the bottom of the folding rod (1011), the lower slider (1014) is installed in the interior of a T-shaped groove (1015), and the T-shaped groove (1015) is opened in the interior of a pressure plate (1016).

7. The torque handle for installing a bone screw according to claim 6, characterized in that: The two lower sliding blocks (1014) located in the middle are both mounted with moving blocks (1017), the moving blocks (1017) are each mounted with an inner plate (1018), and the two moving blocks (1017) are slidably mounted in the T-shaped groove (1015).

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