A percussion hammer for tendon reflex examination

Abstract

The present invention discloses a percussion hammer for tendon reflex examination, which comprises a handle and a percussion component. A connecting seat is connected to the top end of the handle. A pair of side plates are arranged on the connecting seat. A rotating shaft is rotatably clamped between the two side plates. A hammer handle is connected to the rotating shaft. A torsion spring is arranged on any one side of the hammer handle. The free end of the torsion spring is connected to the inner side of one side plate. The hammer handle is hollow, and a solid hammer head is connected to the top end of the hammer handle. A pre-positioning component is arranged on the connecting seat, and a sensing component is arranged at the bottom end of the handle. In the present invention, the hammer handle can store energy through a motor, and the rotation angle of the output shaft of the motor at different percussion positions is recorded by a controller externally connected to the motor, so that the same force is used for each percussion. The output shaft of the motor drives the rotating shaft to rotate, and the hammer handle where the rotating shaft is located will store energy. Place the outside of the positioning ring at the part where the patient needs to be percussed and tapped. Release the lock of the output shaft of the motor, and the hammer handle will quickly reset under the elastic force of the torsion spring to perform percussion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical tools, and more specifically, to a percussion hammer for checking neurotendon reflexes. Background Art

[0002] A percussion hammer is a main tool for neurologists to conduct physical examinations. One of its important functions is to strike tendon reflexes. It is mostly composed of a piece of rubber and a wooden or metal handle. When in use, the rubber end is gently tapped on the relevant part to observe the presence and strength of the tendon reflex. When the nervous system is damaged, abnormal reflex manifestations will occur, thus helping medical staff to judge the location and degree of nerve damage in patients.

[0003] However, when the existing percussion hammer is used to conduct a physical examination of tendon reflexes on patients, the test results of different testers are likely to be inconsistent due to the differences in the experience and strength of the operator, which will affect the accuracy of the test results to a certain extent, and further affect the operator's localization diagnosis of the nervous system damage in patients. Summary of the Invention

[0004] The present invention provides a percussion hammer for checking neurotendon reflexes to solve the problem that when the existing percussion hammer is used to conduct a tendon reflex test on a patient, the test results of different testers are likely to be inconsistent due to the differences in the experience and strength of the operator, thus affecting the operator's judgment of the muscle nerve condition of the patient.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A percussion hammer for checking tendon reflexes includes a handle. A connecting seat is connected to the top end of the handle. A pair of side plates are arranged on the connecting seat. A rotating shaft is rotatably clamped between the two side plates. A hammer handle is connected to the rotating shaft. A torsion spring is arranged on either side of the hammer handle. The free end of the torsion spring is connected to the inner side of one of the side plates. The hammer handle is hollow. A solid hammer head is connected to the top end of the hammer handle. A pre-positioning component is arranged on the connecting seat. A sensing component is arranged at the bottom end of the handle.

[0007] Preferably, a motor is arranged on the inner side of either side plate. A first gear is coaxially connected to the output shaft end of the motor. A second gear coaxially connected to the rotating shaft meshes with the first gear. The motor is a stepping motor controlled by an external controller.

[0008] Preferably, a protective shell is sleeved outside the motor. The protective shell is slidably clamped on the inner side of the side plate provided with the motor. Connecting blocks are arranged on both sides of the protective shell. A fastening screw is screwed on the connecting block. The bottom end of the fastening screw is screwed to the connecting seat.

[0009] Preferably, the pre-positioning assembly includes a connecting handle connected to the top end of the connecting seat, a positioning ring is connected to the top end of the connecting handle, and when the hammer handle is in the vertical direction, one end of the hammer head contacts the inner side of the positioning ring.

[0010] Preferably, a testing assembly is arranged on the connecting handle. The testing assembly includes a fixing rod slidably clamped on the connecting handle. Springs and a connecting frame are respectively connected to both ends of the fixing rod. One end of the connecting frame is connected with an induction plate through a spring. When the hammer handle is in the vertical direction, one side of the induction plate contacts the outer side of the hammer head.

[0011] Preferably, a pair of first sliding grooves are formed in the connecting handle. A pair of sliding blocks are arranged on the outer side of the fixing rod, and the two sliding blocks are respectively slidably clamped in the two first sliding grooves. A fixing cylinder is arranged on one side of the connecting handle. The inner wall of the fixing cylinder is connected to the free end of the spring. A pair of second sliding grooves are formed in the inner wall of the fixing cylinder. The second sliding grooves have the same size as the first sliding grooves and are arranged in the same horizontal plane.

[0012] Preferably, a clamping groove is formed in the connecting handle. A partition plate is arranged at one end of the clamping groove. A pair of limiting blocks are arranged at the connecting position of the connecting handle and the partition plate. The clamping groove and the partition plate are aligned in the horizontal direction after the connecting frame rotates 180 degrees along the vertical plane.

[0013] Preferably, four holding grooves are formed on the outer side of the handle. The measuring and sensing assembly includes a placing groove formed in the handle. A pair of extending plates are connected to the bottom end of the handle. A limiting groove is jointly formed by the two extending plates and the inner side of the handle. A first measuring plate and a second measuring plate are respectively clamped inside the two limiting grooves, and the first measuring plate is hinged to the second measuring plate.

[0014] Preferably, a plurality of scales are formed on the second measuring plate, and a distance value is marked at one end of each scale.

[0015] Preferably, a storage assembly is arranged at the bottom end of the handle. The storage assembly includes a baffle slidably clamped at the bottom end of the handle. The top surface of the baffle contacts the bottom surfaces of the first measuring plate and the second measuring plate. A first magnetic block and a second magnetic block are arranged at the bottom end of the handle. The first magnetic block and the second magnetic block are both arranged in the same horizontal plane as the baffle, and magnetic forces are applied to both ends of the baffle.

[0016] Principle and beneficial effects of this technical solution:

[0017] (1) In the present invention, the hammer handle is configured to store energy through a motor, and the rotation angle of the output shaft of the motor at different knocking positions is recorded by a controller externally connected to the motor, so that the same force is used for each percussion. After the energy storage degrees of all knocking positions are recorded through the cooperation of the test component, when the device is required to perform percussion knocking, the controller will drive the motor to work according to the record, the output shaft of the motor will rotate, the rotation of the shaft where the second gear is located is driven by the first gear arranged at the end of the output shaft of the motor, and the hammer handle where the shaft is located will also rotate synchronously. The torsion spring arranged on one side of the hammer handle will store energy. After the motor stops working, it indicates that the hammer handle has rotated to the specified angle. At this time, the outer side of the positioning ring in the pre-positioning component is placed at the part of the patient where percussion knocking is required, the locking of the output shaft of the motor is released, and the hammer handle will quickly reset under the elastic force of the torsion spring to perform knocking.

[0018] (2) The test component set in the present invention can test the final knocking force of the hammer head. When it is necessary to record the rotation angle of the output shaft of the motor in different postures for the first time or to re-adjust the rotation angle record of the output shaft of the motor after long-term use, one end of the connecting frame provided with the induction plate is aligned with the top of the positioning ring, and then the output shaft of the motor is driven to rotate to store energy in the torsion spring. After the energy storage reaches the estimated level, the hammer handle is released, and the hammer handle will drive the hammer head to quickly rotate along the axis of the shaft, causing the hammer head to strike the induction plate, and the induction plate will record the knocking force data.

[0019] (3) The sensing component set in the present invention can detect the patient's sensation. When it is necessary to test the signal conduction condition of a certain nerve segment of the patient, manually slide the baffle to disengage the baffle from the attraction of the first magnetic block and make the baffle attracted to the second magnetic block. At this time, slide out the first measuring plate and the second measuring plate downward. After the first measuring plate and the second measuring plate slide to the bottom end of the limit slot, rotate the first side plate, and align the outer edge of the first side plate with the scale corresponding to this length on the second measuring plate according to the length of the nerve signal measurement segment. At this time, the bottom ends of the first measuring plate and the second measuring plate are respectively in contact with both ends of the position to be measured. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram after the present invention is disassembled;

[0022] Figure 3 is Figure 2 the enlarged structural schematic diagram of area A in

[0023] Figure 4 is Figure 2 the enlarged structural schematic diagram of area B in

[0024] Figure 5 is the structural schematic diagram after partial components of the present invention are sectioned;

[0025] Figure 6 is Figure 5 The enlarged structural schematic diagram of area C in

[0026] Figure 7 is Figure 5 The enlarged structural schematic diagram of area D in

[0027] The reference numerals in the attached drawings of the specification include: 1, hammer head; 2, hammer handle; 3, side plate; 4, handle; 5, partition; 6, limit block; 7, connecting seat; 8, positioning ring; 9, connecting handle; 10, first chute; 11, card slot; 12, induction plate; 13, spring; 14, connecting frame; 15, tension spring; 16, fixed rod; 17, slider; 18, torsion spring; 19, first measuring plate; 20, second measuring plate; 21, scale; 22, protective shell; 23, rotating shaft; 24, fastening screw; 25, connecting block; 26, motor; 27, first gear; 28, placement groove; 29, fixed cylinder; 30, second chute; 31, first magnet; 32, baffle; 33, limit groove; 34, extension plate; 35, holding groove; 36, second magnet; 37, second gear. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the attached drawings and implementation manners:

[0029] Embodiment:

[0030] As Figures 1 to 7 shown, the present invention provides a percussion hammer for tendon reflex examination, including a handle 4, a connecting seat 7 is connected to the top end of the handle 4, a pair of side plates 3 are arranged on the connecting seat 7, a rotating shaft 23 is rotatably clamped between the two side plates 3, a hammer handle 2 is connected to the rotating shaft 23, a torsion spring 18 is arranged on either side of the hammer handle 2, the free end of the torsion spring 18 is connected to the inner side of one side plate 3, the hammer handle 2 is hollow, a solid hammer head 1 is connected to the top end of the hammer handle 2, a pre-positioning assembly is arranged on the connecting seat 7, and a sensing assembly is arranged at the bottom end of the handle 4.

[0031] As Figure 1 , Figure 4 and Figure 5 shown, a motor 26 is arranged on the inner side of either side plate 3, a first gear 27 is coaxially connected to the output shaft end of the motor 26, a second gear 37 coaxially connected to the rotating shaft 23 meshes with the first gear 27, and the motor 26 is a stepper motor controlled by an external controller.

[0032] As Figure 1 and Figure 4As shown, a protective case 22 is provided outside the motor 26. The protective case 22 is slidably clamped inside the side plate 3 where the motor 26 is provided. Connecting blocks 25 are provided on both sides of the protective case 22. A fastening screw 24 is screwed on the connecting block 25, and the bottom end of the fastening screw 24 is screwed to the connecting seat 7.

[0033] As Figures 1 to 3 shown, the pre-positioning assembly includes a connecting handle 9 connected to the top end of the connecting seat 7. A positioning ring 8 is connected to the top end of the connecting handle 9. When the hammer handle 2 is in the vertical direction, one end of the hammer head 1 contacts the inner side of the positioning ring 8.

[0034] As Figures 1 to 3 shown, a testing assembly is provided on the connecting handle 9. The testing assembly includes a fixing rod 16 slidably clamped on the connecting handle 9. A tension spring 15 and a connecting frame 14 are respectively connected to both ends of the fixing rod 16. One end of the connecting frame 14 is connected to an induction plate 12 through a spring 13. When the hammer handle 2 is in the vertical direction, one side of the induction plate 12 contacts the outer side of the hammer head 1.

[0035] As Figure 3 and Figure 6 shown, a pair of first sliding grooves 10 are provided on the connecting handle 9. A pair of sliding blocks 17 are provided on the outer side of the fixing rod 16. The two sliding blocks 17 are respectively slidably clamped in the two first sliding grooves 10. A fixing cylinder 29 is provided on one side of the connecting handle 9. The inner wall of the fixing cylinder 29 is connected to the free end of the tension spring 15. A pair of second sliding grooves 30 are provided on the inner wall of the fixing cylinder 29. The second sliding grooves 30 have the same size as the first sliding grooves 10 and are arranged in the same horizontal plane.

[0036] As Figures 1 to 3 shown, a clamping groove 11 is provided on the connecting handle 9. A partition plate 5 is provided at one end of the clamping groove 11. A pair of limiting blocks 6 are provided at the connecting position of the connecting handle 9 and the partition plate 5. The clamping groove 11 and the partition plate 5 are aligned with the connecting frame 14 after rotating 180 degrees along the vertical plane in the horizontal direction.

[0037] The test component can test the final knocking force of the hammer head 1. When recording the rotation angle of the output shaft of the motor 26 in different postures for the first time or when it is necessary to re-adjust and record the rotation angle of the output shaft of the motor 26 after long-term use, align the end of the connecting frame 14 with the induction plate 12 with the top of the positioning ring 8, and then drive the output shaft of the motor 26 to rotate to store energy in the torsion spring 18. After the energy storage reaches the estimated level, release the hammer handle 2, and the hammer handle 2 will drive the hammer head 1 to rotate rapidly along the axis of the rotating shaft 23, so that the hammer head 1 knocks the induction plate 12, and the induction plate 12 will record the knocking force data. At the same time, the induction plate 12 will move backward, so that the spring 13 absorbs the impact. After adjusting the rotation angle of the output shaft of the motor 26 according to the force data, repeat the above steps until the knocking force meets the requirements. At this time, the test component needs to be stored. Pull the connecting frame 14 outwards, so that the fixed rod 16 connected to one side of the connecting frame 14 pulls the tension spring 15, and at the same time, the two sliders 17 outside the fixed rod 16 move out of the two first sliding grooves 10. At this time, rotate the connecting frame 14 by 180 degrees and release the connecting frame 14. The connecting frame 14 will slide along the fixed cylinder 29 under the pulling force of the tension spring 15. While the fixed rod 16 slides into the fixed cylinder 29, the connecting frame 14 will be synchronously clamped into the card slot 11, and the induction plate 12 connected to the connecting frame 14 through the spring 13 will move to one side of the partition plate 5 for storage, changing the device from the debugging state to the working state.

[0038] As Figure 1 , Figure 4 , Figure 5 and Figure 7 shown, four holding grooves 35 are opened on the outer side of the handle 4. The sensing component includes a placement groove 28 opened in the handle 4. A pair of extension plates 34 are connected to the bottom end of the handle 4. A limiting groove 33 is jointly opened on the inner sides of the two extension plates 34 and the handle 4. A first measuring plate 19 and a second measuring plate 20 are respectively clamped inside the two limiting grooves 33, and the first measuring plate 19 is hinged to the second measuring plate 20.

[0039] As Figure 4 shown, multiple scales 21 are opened on the second measuring plate 20, and a distance value is marked at one end of each scale.

[0040] As Figure 1 , Figure 4 and Figure 7 shown, a storage component is arranged at the bottom end of the handle 4. The storage component includes a baffle 32 slidably clamped at the bottom end of the handle 4. The top surface of the baffle 32 contacts the bottom surfaces of the first measuring plate 19 and the second measuring plate 20. A first magnet 31 and a second magnet 36 are arranged at the bottom end of the handle 4. The first magnet 31 and the second magnet 36 are both in the same horizontal plane as the baffle 32, and there is magnetic force at both ends of the baffle 32.

[0041] The sensing component can detect the patient's sensations. When it is necessary to test the signal conduction condition of a certain nerve segment of the patient, manually slide the baffle 32 to disengage it from the attraction of the first magnet 31 and make it attracted to the second magnet 36. At this time, slide out the first measuring plate 19 and the second measuring plate 20 downward. After the first measuring plate 19 and the second measuring plate 20 slide to the bottom end of the limiting groove 33, rotate the first side plate 3 to align the outer edge of the first side plate 3 with the scale 21 corresponding to this length on the second measuring plate 20 according to the length of the nerve signal measurement segment. At this time, just make the bottom ends of the first measuring plate 19 and the second measuring plate 20 contact both ends of the position to be measured respectively.

[0042] Specific usage method and function of this embodiment:

[0043] In the present invention, the hammer handle 2 provided can store energy through the motor 26, and the rotation angle of the output shaft of the motor 26 at different knocking positions is recorded by the controller externally connected to the motor 26, so that the same force is used for each percussion. After the energy storage degrees of all knocking positions are recorded through the cooperation of the test components, when it is necessary to use the device for percussion knocking, the controller will drive the motor 26 to work according to the record. The output shaft of the motor 26 will rotate, drive the rotation of the rotating shaft 23 where the second gear is located through the first gear 27 arranged at the end of the output shaft of the motor 26, and the hammer handle 2 where the rotating shaft 23 is located will also rotate synchronously. The torsion spring 18 arranged on one side of the hammer handle 2 will store energy. After the motor 26 stops working, it indicates that the hammer handle 2 has rotated to the specified angle. At this time, place the outside of the positioning ring 8 in the pre-positioning component at the part of the patient where percussion knocking is required, release the locking of the output shaft of the motor 26, and the hammer handle 2 will quickly reset under the elastic force of the torsion spring 18 for knocking;

[0044] To reduce the test error, it is necessary to lubricate the first gear 27 and the second gear regularly. When lubricant needs to be replenished, unscrew the two fastening screws 24 and move the protective shell 22 horizontally to make the protective shell 22 snap into the side plate 3 close to it. At this time, the first gear 27 and the second gear can be replenished with lubricant. After the lubricant replenishment is completed, reset the protective shell 22 and screw the fastening screws 24 back into the connecting seat 7 through the connecting block 25.

[0045] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A percussion hammer for tendon reflex examination, characterized in that: The invention comprises a handle (4), the top of which is connected to a connecting seat (7), a pair of side plates (3) are arranged on the connecting seat (7), a rotating shaft (23) is rotatably arranged between the two side plates (3), a hammer handle (2) is connected to the rotating shaft (23), a torsion spring (18) is arranged on either side of the hammer handle (2), a free end of the torsion spring (18) is connected to the inner side of one of the side plates (3), the hammer handle (2) is hollow, a solid hammer head (1) is connected to the top of the hammer handle (2), a pre-positioning component is arranged on the connecting seat (7), and a sensing component is arranged at the bottom of the handle (4); A motor (26) is arranged inside any of the side plates (3); a first gear (27) is coaxially connected to an output shaft end of the motor (26); a second gear (37) coaxially connected to the rotating shaft (23) is meshed with the first gear (27); the motor (26) is a stepping motor controlled by an external controller, and the external controller can record the output shaft rotation angle of the motor at different striking positions; The pre-positioning assembly comprises a connecting handle (9) connected to the top end of the connecting seat (7), a positioning ring (8) being connected to the top end of the connecting handle (9), and when the hammer handle (2) is in a vertical direction, one end of the hammer head (1) contacts the inner side of the positioning ring (8); A test assembly is arranged on the connecting handle (9), and the test assembly comprises a fixing rod (16) slidably mounted on the connecting handle (9), two ends of the fixing rod (16) are respectively connected to a tension spring (15) and a connecting frame (14), one end of the connecting frame (14) is connected to a sensing plate (12) via a spring (13), and when the hammer handle (2) is in a vertical direction, one side of the sensing plate (12) contacts the outer side of the hammer head (1).

2. A percussion hammer for tendon reflex examination according to claim 1, characterized in that: The outer cover of the motor (26) is provided with a protective shell (22), and the protective shell (22) is slidably mounted on the inner side of the side plate (3) on which the motor (26) is mounted, and connecting blocks (25) are arranged on both sides of the protective shell (22), and fastening screws (24) are screwed on the connecting blocks (25), and the bottom end of the fastening screws (24) is screwed on the connecting seat (7).

3. A percussion hammer for tendon reflex examination according to claim 2, characterized in that: A pair of first slide grooves (10) are provided on the connecting handle (9), a pair of sliders (17) are provided on the outer side of the fixing rod (16), and the two sliders (17) are respectively slidably clamped in the two first slide grooves (10), a fixing cylinder (29) is provided on one side of the connecting handle (9), the inner wall of the fixing cylinder (29) is connected to the free end of the tension spring (15), and a pair of second slide grooves (30) are provided on the inner wall of the fixing cylinder (29), and the second slide grooves (30) are the same size as the first slide grooves (10) and are arranged in the same horizontal plane.

4. A percussion hammer for tendon reflex examination according to claim 3, characterized in that: The connecting handle (9) is provided with a slot (11), one end of the slot (11) is provided with a partition (5), a pair of limit blocks (6) are provided at the connection position between the connecting handle (9) and the partition (5), and the slot (11) and the partition (5) are aligned with the connecting frame (14) after being rotated 180 degrees along a vertical plane in the horizontal direction.

5. A percussion hammer for tendon reflex examination according to claim 4, characterized in that: The handle (4) is provided with four gripping grooves (35) on the outside, the sensing component comprises a placement groove (28) provided in the handle (4), a pair of extension plates (34) are connected to the bottom end of the handle (4), a limiting groove (33) is provided on the two extension plates (34) and the inside of the handle (4), a first measuring plate (19) and a second measuring plate (20) are respectively clamped on the inside of the two limiting grooves (33), and the first measuring plate (19) and the second measuring plate (20) are hingedly connected.

6. A percussion hammer for tendon reflex examination according to claim 5, characterized in that: The second measuring plate (20) is provided with a plurality of scales (21), and a distance value is marked at one end of each scale.

7. A percussion hammer for tendon reflex examination according to claim 6, characterized in that: A storage component is provided at the bottom end of the handle (4), and the storage component includes a baffle (32) slidably mounted at the bottom end of the handle (4), the top surface of the baffle (32) is in contact with the bottom surfaces of the first measuring plate (19) and the second measuring plate (20), and a first magnetic block (31) and a second magnetic block (36) are provided at the bottom end of the handle (4), the first magnetic block (31) and the second magnetic block (36) are both arranged in the same horizontal plane as the baffle (32), and both ends of the baffle (32) have magnetic force.

Images