CN218684863U

CN218684863U - Medical torsion handle

Info

Publication number: CN218684863U
Application number: CN202121065224.2U
Authority: CN
Inventors: 田康; 赵强; 田跃
Original assignee: Baoding Kangqiang Medical Instrument Co ltd
Current assignee: Baoding Kangqiang Medical Instrument Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2023-03-24
Anticipated expiration: 2031-05-18

Abstract

The utility model discloses a medical torsion handle, which comprises a fixed component, a rotatable component, an adjusting component and a quick-change connector component, wherein the fixed component comprises a clutch fixed block, a handle cover, a core shell and a tail cap, the two ends of the inner hole of the core shell are in threaded connection with the handle cover and the tail cap, and the clutch fixed block is in circumferential limit connection with the tail cap; the rotatable assembly comprises a core bar, a pressure spring retainer ring, a clutch moving block and a first bolt, and the inner end of the core bar penetrates through the handle cover and the clutch fixed block; the inner end of the core rod is in pin joint with a clutch moving block, and a ball for transmitting torque is arranged between the clutch moving block and the clutch fixed block; the inner end of the clutch moving block compresses the pressure spring and the pressure spring retainer ring; the adjusting assembly comprises a rolling frame, an adjusting nut and a locking nut, and the adjusting nut and the locking nut are arranged in the inner hole of the core shell and push the rolling frame tightly; the quick-change connector assembly is arranged at the outer end of the core rod. The utility model discloses medical torque handle, the moment of torsion control range is great, is difficult to the deviation moreover to appear, and the precision is high.

Description

Medical torsion handle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a medical torsion handle.

Background

Because the condition that the implanted screw locks the prosthesis in the orthopedic operation process needs proper locking force, the phenomenon of falling off and excessive locking can not occur after the prosthesis is implanted. Among the prior art, the torsion handle that medical field often used, and the most main performance index of torsion handle is that use many times back torsion can not appear the deviation, can not become invalid, and this is the index that we measured a torsion handle good and bad. The adjustable torque range of the existing torque handle is small, the torque deviation is easy to occur after the torque handle is used for a long time, the torque value is not accurate enough, and the market demand can not be met.

Therefore, a medical torque handle needs to be developed to address the above drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a medical torque handle, the moment of torsion control range is great, is difficult to appear the deviation moreover, and the precision is high.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a medical torsion handle, including fixed subassembly, rotatable subassembly, adjustment subassembly and quick change coupler subassembly, fixed subassembly includes separation and reunion stator, handle lid, core casing and tail cap, core casing hole both ends are provided with the locking internal thread, handle lid and tail cap threaded connection are in on the locking internal thread, separation and reunion stator circumference spacing connection is in the inner of tail cap; the rotatable assembly comprises a core bar, a pressure spring retainer ring, a clutch moving block and a first bolt, wherein the inner end of the core bar penetrates through the handle cover and the clutch fixed block and is axially limited on a middle hole of the clutch fixed block through the clamp spring; the inner end of the core rod is connected with the clutch moving block through the first bolt, and a ball for transmitting torque is arranged between the clutch moving block and the clutch fixed block; the inner end of the clutch moving block compresses the pressure spring and the pressure spring retainer ring; the adjusting assembly comprises a rolling frame, an adjusting nut and a locking nut, an adjusting internal thread is arranged on an inner hole of the core shell at the adjusting end of the pressure spring, the adjusting nut and the locking nut are in threaded connection with the adjusting internal thread to push the rolling frame tightly, and a ball for reducing friction is arranged between the rolling frame and the pressure spring retainer ring; the quick-change connector assembly is arranged at the outer end of the core rod and can be adapted to locking screws of different models.

Furthermore, a plurality of ball fixing pits are uniformly distributed on the circumference of the front surface of the clutch fixed block, two symmetrically-arranged positioning legs are fixedly connected to the back surface of the clutch fixed block, two limiting holes are formed in the inner end surface of the tail cap, and the positioning legs are inserted into the limiting holes; the front surface of the clutch moving block is provided with a first ball slideway in the shape of a concave ring groove, a plurality of ball pits are arranged on the first ball slideway, and the ball fixing pits, the ball pits and the balls are consistent in quantity and correspond to each other.

Furthermore, a second ball slideway is arranged on the bottom surface of the inner groove of the rolling frame, and balls capable of rolling are compressed between the second ball slideway and the back surface of the pressure spring retainer ring.

Furthermore, the inner end face of the adjusting nut is provided with a groove and is connected with the rolling frame in an embedded mode, the back face of the adjusting nut is provided with a first rotating groove convenient to rotate and adjust, the outer cylindrical face of the adjusting nut is provided with first threads, and the first threads are in threaded connection with the adjusting internal threads.

Furthermore, the back of lock nut is provided with the second rotating groove of being convenient for rotatory adjustment, set up the second screw thread on lock nut's the outer face of cylinder, second threaded connection the adjustment internal thread, lock nut locking is in on adjusting nut's the back.

Furthermore, a plurality of threaded holes are evenly distributed in the circumference of the locking nut, the threaded holes are arranged in a penetrating mode along the axial direction of the locking nut, a jackscrew is connected to the inner threads of the threaded holes, and the top end of the jackscrew abuts against the back face of the adjusting nut.

Furthermore, a long side hole is formed in the cylindrical surface of the clutch moving block in a penetrating mode, the long side hole is a kidney-shaped hole, and two ends of the first plug pin are inserted into the long side hole; the back of the clutch moving block is provided with a pressure spring positioning core column, and the pressure spring positioning core column is inserted into the inner end of the pressure spring.

Furthermore, an annular sealing groove is formed in the outer cylindrical surface of the tail cap, a first sealing ring is arranged in the sealing groove, and the first sealing ring seals a gap between the outer cylindrical surface of the tail cap and the inner hole wall of the core shell.

The sealing element is arranged between the handle cover and the locking nut, an outer ring groove and an inner ring groove are arranged on the sealing element, a second sealing ring and a third sealing ring are respectively installed on the sealing element, the second sealing ring seals a gap between the inner hole wall of the core shell and the sealing element, and the third sealing ring seals a gap between the outer wall of the core rod and the sealing element.

Further, still include the sheath, the sheath cup joints the core casing outside, the cross-section appearance of sheath is regular hexagon, the sheath adopts medical grade silica gel material to make.

Compared with the prior art, the utility model discloses a beneficial technological effect:

the utility model relates to a medical torque handle, which ensures the stability of torque value by arranging a ball for transmitting torque between a rotatable component and a fixed component and rotating the rotatable component relative to the fixed component when the set torque is reached; due to the arrangement of the universal pressure spring and the adjusting assembly, the pressing force of the pressure spring can be conveniently adjusted by screwing or retracting the adjusting nut, so that the torque can be adjusted, and the adjusting range is wide; through lock nut's setting, can lock the position of adjusting nut, avoid vibration or not hard up to lead to adjusting nut displacement, strictly guarantee the compression capacity of pressure spring, and then guaranteed the stability of settlement moment of torsion. The utility model discloses medical torque handle, the moment of torsion control range is great, is difficult to the deviation moreover to appear, and the precision is high.

In addition, the ball fixing pit, the balls, the first ball slide way and the ball pit are arranged on the corresponding surfaces of the clutch fixed block and the clutch movable block, so that when the torque force applied to the rotatable component reaches a rotation critical value, the ball pits continuously jump from adjacent balls to make a crisp click sound, and an operator can sense and stop screwing operation conveniently. The second ball slideway is arranged on the bottom surface of the inner groove and tightly presses the rolling balls, so that the track of the rolling balls is limited, the friction resistance of the rotatable assembly relative to the fixed assembly during rotation can be reduced, the influence of contact damping is reduced, and the accuracy of the set torque value is improved. The first rotating groove and the second rotating groove are respectively arranged on the back surfaces of the adjusting nut and the locking nut, so that the screwing-in and unscrewing positions of the adjusting nut and the locking nut can be conveniently adjusted, and the operation and adjustment are convenient; the four threaded holes are circumferentially and uniformly distributed and penetrate through the locking nut, the locking nut can be further locked after being in threaded connection with the jackscrew, and the locking is reliable and anti-loose. Through the long side hole setting of waist type hole shape, can constantly compensate clutch movable block axial when jumping from between adjacent ball in the ball hole, avoid whole handle rear end to beat, increased stability. Through installing first sealing washer on the outer face of cylinder of tail cap, set up the sealing member and install second sealing washer and third sealing washer, adopt sealing measure, prevent to use and get into the spot after accomplishing, avoid transmitting the pollutant and influence and set for the torsion precision. Through the sheath setting of cup jointing in the core casing outside, use the medical grade silica gel handle of hexagon, accord with human mechanics, not only can play anti-skidding effect effectively, still more comfortable in the use.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

Fig. 1 is a schematic perspective view of the medical torque handle of the present invention;

fig. 2 is a schematic view of the medical torque handle of the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken at the location A-A in FIG. 2;

fig. 4 is a schematic perspective view of the clutch fixed block of the present invention;

fig. 5 is a schematic perspective view of the rolling stand of the present invention;

fig. 6 is a schematic perspective view of the adjusting nut of the present invention;

fig. 7 is a schematic perspective view of the lock nut of the present invention;

fig. 8 is a schematic perspective view of the clutch moving block of the present invention;

fig. 9 is a schematic perspective view of the tail cap of the present invention;

fig. 10 is a schematic view of a three-dimensional structure after a T-shaped handle is provided in an embodiment of the present invention.

Description of reference numerals: 1. a core bar; 2. a clutch fixed block; 201. ball fixing pits; 202. positioning the legs; 3. a handle cover; 4. a pressure spring; 5. a pressure spring retainer ring; 6. a rolling frame; 601. a second ball ramp; 7. adjusting the screw cap; 701. a first rotating groove; 702. a first thread; 8. a lock nut; 801. a second rotating groove; 802. a second thread; 803. a threaded hole; 9. a clutch moving block; 901. a first ball ramp; 902. ball pits; 903. a long side hole; 904. positioning the core column by a pressure spring; 10. a core housing; 11. a tail cap; 111. a third thread; 112. a jack; 113. a sealing groove; 114. a limiting hole; 12. a first latch; 13. a second bolt; 14. a first seal ring; 15. carrying out top thread; 16. a clamp spring; 17. a sheath; 18. a quick plug assembly; 19. a seal member; 20. a second seal ring; 21. a third seal ring; 22. t-shaped handle.

Detailed Description

The core of the utility model is to provide a medical torque handle, the moment of torsion control range is great, is difficult to appear the deviation moreover, and the precision is high.

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to the drawings, fig. 1 is a schematic perspective view of a medical torsion handle of the present invention;

fig. 2 is a schematic view of the medical torque handle of the present invention; FIG. 3 isbase:Sub>A schematic cross-sectional view taken at the location A-A in FIG. 2; fig. 4 is a schematic perspective view of the clutch fixed block of the present invention; fig. 5 is a schematic perspective view of the rolling stand of the present invention; fig. 6 is a schematic perspective view of the adjusting nut of the present invention; fig. 7 is a schematic perspective view of a lock nut of the present invention; fig. 8 is a schematic perspective view of the clutch moving block of the present invention; fig. 9 is a schematic perspective view of the tail cap of the present invention; fig. 10 is a schematic view of a three-dimensional structure after a T-shaped handle is disposed in an embodiment of the present invention.

In one embodiment, as shown in fig. 1-9, includes a fixed assembly, a rotatable assembly, an adjustment assembly, and a quick-change coupler assembly 18.

The fixed assembly comprises a clutch fixed block 2, a handle cover 3, a core shell 10 and a tail cap 11, locking internal threads are arranged at two ends of an inner hole of the core shell 10, the handle cover 3 and the tail cap 11 are in threaded connection with the locking internal threads and used for plugging ports, and the clutch fixed block 2 is circumferentially limited and connected at the inner end of the tail cap 11.

The rotatable assembly comprises a core bar 1, a pressure spring 4, a pressure spring retainer ring 5, a clutch moving block 9 and a first bolt 12, wherein the inner end of the core bar 1 penetrates through a handle cover 3 and a clutch fixed block 2 and is axially limited and connected to a middle hole of the clutch fixed block 2 through a clamp spring 16; the inner end of the core bar 1 is connected with a clutch moving block 9 through a first bolt 12, and a ball for transmitting torque is arranged between the clutch moving block 9 and the clutch fixed block 2; the inner end of the clutch moving block 9 compresses the compression spring 4 and the compression spring retainer ring 5.

The adjusting assembly comprises a rolling frame 6, an adjusting nut 7 and a locking nut 8, an inner hole of a core shell 10 is provided with an adjusting inner thread at an adjusting end of a pressure spring 4 far away from a clutch moving block 9, the adjusting nut 7 is in threaded connection with the locking nut 8, the adjusting inner thread pushes the rolling frame 6 tightly, and a ball used for reducing friction resistance is arranged between the rolling frame 6 and a pressure spring retainer ring 5.

A quick-change joint assembly 18 is arranged at the outer end of the core rod 1, the quick-change joint assembly 18 being adaptable to locking screws of different models. The quick-change connector assembly 18 can lock or release the locking screw inserted into the inner hole of the sleeve through the abdicating annular groove and the ball ejecting mechanism.

The ball for transmitting torque is arranged between the rotatable component and the fixed component, and the rotatable component rotates relative to the fixed component when the set torque is achieved, so that the stability of a torque value is ensured; due to the arrangement of the universal pressure spring 4 and the adjusting assembly, the pressing force of the pressure spring 4 can be conveniently adjusted by screwing or retracting the adjusting nut 7, so that the torque can be adjusted, and the adjusting range is wide; through the setting of lock nut 8, can lock the position of adjusting nut 7, avoid vibration or not hard up 7 displacements of adjusting nut that lead to, strictly guarantee the compression capacity of pressure spring 4, and then guaranteed the stability of setting for the moment of torsion. The utility model discloses medical torque handle, the moment of torsion control range is great, is difficult to the deviation moreover to appear, and the precision is high.

The utility model discloses an among the specific embodiment, as shown in fig. 3, fig. 4 and fig. 8, the front circumference equipartition of separation and reunion fixed block 2 has a plurality of ball fixed pits 201, and the spacing leg 202 that two symmetries of back fixedly connected with of separation and reunion fixed block 2 set up sets up two symmetrical spacing holes 114 of arranging on the interior terminal surface of tail cap 11, and location leg 202 pegs graft in spacing hole 114. The front surface of the clutch moving block 9 is provided with a first ball slideway 901 in the shape of a concave ring groove, the first ball slideway 901 is provided with a plurality of ball pits 902, and the ball fixing pits 201, the ball pits 902 and the balls are consistent in number and correspond to each other and are arranged in a matching way.

By arranging the ball fixing pit 201, the balls, the first ball slide way 901 and the ball pit 902 on the corresponding surfaces of the clutch fixed block 2 and the clutch moving block 9, when the torsion force applied to the rotatable component reaches a rotation critical value, the ball pit 902 continuously jumps from adjacent balls to make a crisp click sound, so that an operator can sense and stop screwing operation conveniently.

In a specific embodiment of the present invention, as shown in fig. 5, the rolling frame 6 is provided with a recessed inner groove toward one surface of the compression spring 4, and the inner groove accommodates the balls that reduce the frictional resistance. And a second ball slide way 601 is arranged on the bottom surface of the inner groove, and balls capable of rolling are compressed between the second ball slide way 601 and the back surface of the pressure spring retainer ring 5.

Specifically, as shown in fig. 6, the inner end surface of the adjusting nut 7 is provided with a groove and is connected with the rolling frame 6 in an embedded manner, the back surface of the adjusting nut 7 is provided with a first rotating groove 701 convenient for rotation adjustment, the outer cylindrical surface of the adjusting nut 7 is provided with a first thread 702, and the first thread 702 is in threaded connection with an adjusting internal thread.

Specifically, as shown in fig. 7, the back surface of the lock nut 8 is provided with a second screwing groove 801 for facilitating rotational adjustment, the outer cylindrical surface of the lock nut 8 is provided with a second thread 802, the second thread 802 is threadedly coupled with the adjustment internal thread, and the lock nut 8 is locked on the back surface of the adjustment nut 7.

Specifically, as shown in fig. 3 and 7, four threaded holes 803 are uniformly distributed on the circumference of the lock nut 8, the threaded holes 803 are axially arranged along the lock nut 8 in a penetrating manner, the jackscrew 15 is connected with the threaded hole 803 in an internal thread manner, and the top end of the jackscrew 15 abuts against the back surface of the adjusting nut 7.

The second ball slide 601 is arranged on the bottom surface of the inner groove and presses the rolling balls, so that the track of the rolling balls is limited, the friction resistance of the rotatable assembly relative to the fixed assembly during rotation can be reduced, the influence of contact damping is reduced, and the accuracy of the set torque value is improved. The first rotating groove 701 and the second rotating groove 801 are respectively arranged on the back sides of the adjusting nut 7 and the locking nut 8, so that the screwing-in and unscrewing positions of the adjusting nut 7 and the locking nut 8 can be conveniently adjusted, and the operation and adjustment are convenient; through four screw holes 803 circumference equipartitions and run through the setting on lock nut 8, lock nut 8 that threaded connection jackscrew 15 back can be further reliable locking.

In a specific embodiment of the present invention, as shown in fig. 8, two symmetrical long side holes 903 are provided on the cylindrical surface of the clutch moving block 9, the long side holes 903 are waist-shaped holes, the length direction of the long side holes 903 is arranged along the axial direction of the clutch moving block 9, and the long side holes 903 are inserted into two ends of the first plug pin 12. The back of the clutch moving block 9 is provided with a pressure spring positioning core column 904, and the pressure spring positioning core column 904 is inserted into the inner end of the pressure spring 4.

The long side holes 903 in the shape of the waist-shaped hole are arranged, so that axial jumping of the clutch moving block 9 can be compensated when the ball pit 902 continuously jumps from adjacent balls, jumping of the rear end of the whole handle is avoided, and stability is improved.

In a specific embodiment of the present invention, as shown in fig. 9, an annular sealing groove 113 is provided on the outer cylindrical surface of the tail cap 11, a first sealing ring 14 is provided in the sealing groove 113, and the first sealing ring 14 seals the gap between the outer cylindrical surface of the tail cap 11 and the inner hole wall of the core housing 10.

Particularly, the utility model discloses medical torque handle still includes sealing member 19, and sealing member 19 sets up between handle lid 3 and lock nut 8, is provided with outer annular groove and interior annular groove on the sealing member 19 and installs second sealing washer 20 and third sealing washer 21 respectively, and the clearance between pore wall and the sealing member 19 in the sealed core shell 10 of second sealing washer 20, the clearance between the sealed core bar 1 outer wall of third sealing washer 21 and the sealing member 19.

By installing the first seal ring 14 on the outer cylindrical surface of the tail cap 11, arranging the seal member 19 and installing the second seal ring 20 and the third seal ring 21, sealing measures are adopted to prevent dirt from entering after use and use, and to avoid transferring pollutants and influencing the accuracy of the set torque. The utility model discloses medical torque handle is moment setting torque handle, and the torsion value is adjusted to the demand torsion value according to the in-service use condition before the use, if unnecessary, can not readjust the torsion value, avoids dismantling sealing member 19 many times and causes sealed inefficacy.

Particularly, the utility model discloses medical torque handle still includes sheath 17, and sheath 17 cup joints in the core casing 10 outside, and sheath 17's cross-section appearance is regular hexagon, and sheath 17 adopts medical grade silica gel material to make.

Through the sheath 17 arrangement sleeved outside the core shell 10, the hexagonal medical silica gel handle is used, accords with human mechanics, not only can effectively play a role in skid resistance, but also is more comfortable in use.

In one embodiment of the present invention, as shown in fig. 10, a T-shaped grip handle 22 is installed at the rear end of the core case 10, and the T-shaped grip handle 22 is disposed perpendicular to the core case 10. The outer side of the T-shaped holding handle 22 is also covered with a medical grade silica gel material sheath.

Through the setting of T type handle 22, the medical personnel of being convenient for carry out the gripping operation, accord with medical personnel's original operation custom, improve the operating efficiency.

The medical torque handle of the utility model ensures the stability of torque value by arranging the ball for transmitting torque between the rotatable component and the fixed component and rotating the rotatable component relative to the fixed component under the condition of reaching the set torque; due to the arrangement of the universal pressure spring 4 and the adjusting assembly, the pressing force of the pressure spring 4 can be conveniently adjusted by screwing or retracting the adjusting nut 7, so that the torque can be adjusted, and the adjusting range is wide; through the setting of lock nut 8, can lock the position of adjusting nut 7, avoid vibration or not hard up 7 displacements of adjusting nut that lead to, strictly guarantee the compression capacity of pressure spring 4, and then guaranteed the stability of setting for the moment of torsion. The utility model discloses medical torque handle, the moment of torsion control range is great, is difficult to the deviation moreover to appear, and the precision is high. In addition, by arranging the ball fixing pit 201, the balls, the first ball slideway 901 and the ball pit 902 on the corresponding surfaces of the clutch fixed block 2 and the clutch movable block 9, when the torsion force applied to the rotatable component reaches a rotation critical value, the ball pit 902 continuously jumps from the adjacent balls to generate a crisp click sound, so that an operator can sense and stop screwing operation conveniently. The second ball slide 601 is arranged on the bottom surface of the inner groove and presses the rolling balls, so that the track of the rolling balls is limited, the friction resistance of the rotatable assembly relative to the fixed assembly during rotation can be reduced, the influence of contact damping is reduced, and the accuracy of the set torque value is improved. The first rotating groove 701 and the second rotating groove 801 are respectively arranged on the back sides of the adjusting nut 7 and the locking nut 8, so that the screwing-in and unscrewing positions of the adjusting nut 7 and the locking nut 8 can be conveniently adjusted, and the operation and adjustment are convenient; through four screw holes 803 circumference equipartitions and run through the setting on lock nut 8, lock nut 8 that threaded connection jackscrew 15 back can be further reliable locking. The long side holes 903 in the shape of the waist-shaped hole are arranged, so that axial jumping of the clutch moving block 9 can be compensated when the ball pit 902 continuously jumps from adjacent balls, jumping of the rear end of the whole handle is avoided, and stability is improved. By installing the first seal ring 14 on the outer cylindrical surface of the tail cap 11, arranging the seal member 19 and installing the second seal ring 20 and the third seal ring 21, sealing measures are adopted to prevent dirt from entering after use and use, and to avoid transferring pollutants and influencing the accuracy of the set torque. The utility model discloses medical torque handle is moment setting torque handle, and the torsion value is adjusted to the demand torsion value according to the in-service use condition before the use, if unnecessary, can not readjust the torsion value, avoids dismantling sealing member 19 many times and causes sealed inefficacy. Through the sheath 17 that cup joints in the outside of core shell 10 setting, use the medical grade silica gel handle of hexagon, accord with human mechanics, not only can play anti-skidding effect effectively, still more comfortable in the use.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. A medical torsion handle is characterized in that: comprises a fixed component, a rotatable component, an adjusting component and a quick-change connector component (18),

the fixing assembly comprises a clutch fixed block (2), a handle cover (3), a core shell (10) and a tail cap (11), locking internal threads are arranged at two ends of an inner hole of the core shell (10), the handle cover (3) and the tail cap (11) are in threaded connection with the locking internal threads, and the clutch fixed block (2) is in circumferential limiting connection with the inner end of the tail cap (11);

the rotatable assembly comprises a core rod (1), a pressure spring (4), a pressure spring retainer ring (5), a clutch moving block (9) and a first bolt (12), wherein the inner end of the core rod (1) penetrates through the handle cover (3) and the clutch fixed block (2) and is axially limited on a middle hole of the clutch fixed block (2) through a clamp spring (16); the inner end of the core rod (1) is connected with the clutch moving block (9) through the first bolt (12), and a ball for transmitting torque is arranged between the clutch moving block (9) and the clutch fixed block (2); the inner end of the clutch moving block (9) compresses the compression spring (4) and the compression spring retainer ring (5);

the adjusting assembly comprises a rolling frame (6), an adjusting nut (7) and a locking nut (8), an inner hole of the core shell (10) is provided with an adjusting inner thread at an adjusting end of the pressure spring (4), the adjusting nut (7) and the locking nut (8) are in threaded connection with the adjusting inner thread to push the rolling frame (6), and a ball for reducing friction is arranged between the rolling frame (6) and the pressure spring retainer ring (5);

the quick-change connector assembly (18) is arranged at the outer end of the core rod (1), and the quick-change connector assembly (18) can be adapted to locking screws of different models.

2. The medical torque handle according to claim 1, wherein: a plurality of ball fixing pits (201) are uniformly distributed on the circumference of the front surface of the clutch fixed block (2), two symmetrically-arranged positioning legs (202) are fixedly connected to the back surface of the clutch fixed block (2), two limiting holes (114) are formed in the inner end surface of the tail cap (11), and the positioning legs (202) are inserted into the limiting holes (114); the front surface of the clutch moving block (9) is provided with a first ball slideway (901) in the shape of a concave ring groove, a plurality of ball pits (902) are arranged on the first ball slideway (901), and the ball fixing pits (201), the ball pits (902) and the balls are consistent in number and correspond to each other.

3. The medical torque handle according to claim 1, wherein: and a second ball slideway (601) is arranged on the bottom surface of the inner groove of the rolling frame (6), and balls capable of rolling are compressed between the second ball slideway (601) and the back surface of the pressure spring retainer ring (5).

4. The medical torque handle according to claim 3, wherein: the inner end face of the adjusting nut (7) is provided with a groove and is connected with the rolling frame (6) in an embedded mode, a first rotating groove (701) convenient for rotation adjustment is arranged on the back face of the adjusting nut (7), first threads (702) are arranged on the outer cylindrical face of the adjusting nut (7), and the first threads (702) are in threaded connection with the adjusting inner threads.

5. The medical torque handle according to claim 4, wherein: the back of lock nut (8) is provided with second rotating groove (801) of being convenient for rotatory adjustment, set up second screw thread (802) on the outer face of cylinder of lock nut (8), second screw thread (802) threaded connection the adjustment internal thread, lock nut (8) locking is in on the back of adjusting nut (7).

6. The medical torque handle according to claim 5, wherein: the locking nut (8) is provided with a plurality of threaded holes (803) in a uniformly distributed mode in the circumferential direction, the threaded holes (803) are axially arranged in a penetrating mode in the locking nut (8), a jackscrew (15) is connected to the threaded holes (803) in an internal thread mode, and the top end of the jackscrew (15) is abutted to the back face of the adjusting nut (7).

7. The medical torque handle according to claim 2, wherein: a long side hole (903) penetrates through the cylindrical surface of the clutch moving block (9), the long side hole (903) is a kidney-shaped hole, and two ends of the first plug pin (12) are inserted into the long side hole (903); the back of the clutch moving block (9) is provided with a pressure spring positioning core column (904), and the pressure spring positioning core column (904) is inserted into the inner end of the pressure spring (4).

8. The medical torque handle according to any one of claims 1 to 7, wherein: be provided with annular seal groove (113) on the outer face of cylinder of tail cap (11), be provided with first sealing washer (14) in seal groove (113), first sealing washer (14) are sealed the outer face of cylinder of tail cap (11) with clearance between core casing (10) inner bore wall.

9. The medical torque handle according to claim 8, wherein: the novel core rod structure is characterized by further comprising a sealing element (19), wherein the sealing element (19) is arranged between the handle cover (3) and the lock nut (8), an outer ring groove and an inner ring groove are formed in the sealing element (19) and are respectively provided with a second sealing ring (20) and a third sealing ring (21), the second sealing ring (20) seals a gap between the inner hole wall of the core shell (10) and the sealing element (19), and the third sealing ring (21) seals a gap between the outer wall of the core rod (1) and the sealing element (19).

10. The medical torque handle according to claim 9, wherein: still include sheath (17), sheath (17) cup joint the core casing (10) outside, the cross-section appearance of sheath (17) is regular hexagon, sheath (17) adopt medical grade silica gel material to make.