Percussion hammer for tendon reflex examination

Abstract

The percussion hammer comprises a grab handle and a knocking assembly, the top end of the grab handle is connected with a connecting base, the connecting base is provided with a pair of side plates, a rotating shaft is rotationally clamped between the two side plates, the rotating shaft is connected with a hammer handle, any side of the hammer handle is provided with a torsional spring, the free end of the torsional spring is connected with the inner side of one side plate, and the hammer handle is hollow. The top end of the hammer handle is connected with a solid hammer head, a pre-positioning assembly is arranged on the connecting base, and a sensing assembly is arranged at the bottom end of the grab handle. The hammer handle can store energy through the motor, the controller connected with the outside of the motor is used for recording the rotation angles of the output shaft of the motor at different knocking positions, so that the same force is used for percussion every time, the output shaft of the motor drives the rotating shaft to rotate, and the hammer handle where the rotating shaft is located can store energy; the outer side of the positioning ring is placed on the portion, needing percussion and knocking, of a patient, locking of the output shaft of the motor is relieved, and the hammer handle can be rapidly reset for knocking under the elastic force effect of the torsional spring.

Description

Technical Field

[0001] The present invention relates to the technical field of medical tools, and more specifically, to a percussion hammer for nerve tendon reflex examination. Background Art

[0002] The percussion hammer is the main tool for neurologists to examine the body. One of its important functions is to tap the tendon reflex. It is usually made of a piece of rubber and a wooden or metal handle. When used, the rubber end is used to gently tap the relevant part to observe the presence and strength of the tendon reflex. When the nervous system is damaged, abnormal reflexes will appear, which can help medical staff determine the location and degree of nerve damage in patients.

[0003] However, when using existing percussion hammers to examine tendon reflexes of patients, the test results of different testers may be inconsistent due to differences in operator experience and strength, which will affect the accuracy of the test results to a certain extent, and further affect the operator's localization diagnosis of the patient's nervous system damage. Summary of the invention

[0004] The present invention provides a percussion hammer for tendon reflex examination to solve the problem that when the percussion hammer in the prior art performs tendon reflex test on a patient, the test results of different testers may be inconsistent due to the difference in operator experience and strength, thereby affecting the operator's judgment on the patient's muscle nerve condition.

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

[0006] A percussion hammer for tendon reflex examination comprises a handle and a striking assembly, wherein the top end of the handle is connected to a connecting seat, a pair of side plates are arranged on the connecting seat, a rotating shaft is arranged between the two side plates for rotation, a hammer handle is connected to the rotating shaft, a torsion spring is arranged on either side of the hammer handle, a 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 assembly is arranged on the connecting seat, and a sensing assembly is arranged at the bottom end of the handle.

[0007] Preferably, a motor is arranged on the inner side of any of the side panels, the output shaft end of the motor is coaxially connected with a first gear, which is meshed with a second gear coaxially connected on the rotating shaft, and the motor is a stepping motor controlled by an external controller.

[0008] Preferably, the outer cover of the motor is provided with a protective shell, and the protective shell is slidably clamped on the inner side of the side plate on which the motor is provided, and connecting blocks are provided on both sides of the protective shell, and fastening screws are screwed on the connecting blocks, and the bottom end of the fastening screws 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 located in a vertical direction, one end of the hammer head contacts the inner side of the positioning ring.

[0010] Preferably, a test assembly is provided on the connecting handle, and the test assembly includes a fixing rod slidably clamped on the connecting handle, and both ends of the fixing rod are respectively connected to a tension spring and a connecting frame, and one end of the connecting frame is connected to a sensing plate through a spring, and when the hammer handle is in a vertical direction, one side of the sensing plate contacts the outer side of the hammer head.

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

[0012] Preferably, a slot is provided on the connecting handle, a partition is provided at one end of the slot, a pair of limit blocks are provided at the connecting position of the connecting handle and the partition, and the slot and the partition are aligned after being rotated 180 degrees along a vertical plane with the connecting frame in the horizontal direction.

[0013] Preferably, four holding grooves are provided on the outside of the handle, the sensing component includes a placement groove provided on the inside of the handle, a pair of extension plates are connected to the bottom end of the handle, and a limiting groove is provided on the two extension plates and the inside of the handle. A first measuring plate and a second measuring plate are respectively clamped on the inside of the two limiting grooves, and the first measuring plate is hinged to the second measuring plate.

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

[0015] Preferably, a storage assembly is provided at the bottom end of the handle, and the storage assembly includes a baffle slidably mounted at the bottom end of the handle, and the top surface of the baffle is in contact with the bottom surfaces of the first measuring plate and the second measuring plate. A first magnetic block and a second magnetic block are provided at the bottom end of the handle, and the first magnetic block and the second magnetic block are both arranged in the same horizontal plane with the baffle, and there is magnetic force at both ends of the baffle.

[0016] The principle and beneficial effects of this technical solution:

[0017] (1) The hammer handle provided in the present invention can store energy through a motor, and the output shaft rotation angle of the motor at different knocking positions can be recorded through a controller connected to the outside of the motor, so that the same force is used for each percussion. After the test is carried out through the cooperation of the test component and the energy storage degree record of all knocking positions is completed, when the device needs to be used for percussion, the controller will drive the motor to work according to the record, and the motor output shaft will rotate. The first gear provided at the end of the motor output shaft drives the shaft where the second gear is located to rotate, and the hammer handle where the shaft is located will also rotate synchronously. The torsion spring provided 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 on the part of the patient that needs to be percussed, and the lock of the motor output shaft is released. The hammer handle will quickly return to its original position and knock under the elastic force of the torsion spring.

[0018] (2) The test assembly provided in the present invention can test the final striking force of the hammer head. When it is necessary to record the output shaft angle of the motor in different postures for the first time or to re-adjust the output shaft angle record of the motor after long-term use, the end of the connecting frame provided with the induction plate is aligned with the top of the positioning ring, and then the motor output shaft is rotated to store energy in the torsion spring. After the energy is stored to the estimated degree, the hammer handle is released, and the hammer handle will drive the hammer head to rotate rapidly along the axis of the shaft, so that the hammer head hits the induction plate, and the induction plate will record the striking force data.

[0019] (3) The sensing component provided in the present invention can detect the patient's sensation. When it is necessary to test the signal conduction status of a certain section of the patient's nerves, the baffle is manually slid to disengage the baffle from the first magnetic block and engage the baffle with the second magnetic block. At this time, the first measuring plate and the second measuring plate are slid downward. After the first measuring plate and the second measuring plate slide to the bottom of the limit groove, the first side plate is rotated to align the outer edge of the first side plate with the scale corresponding to the length on the second measuring plate according to the length of the nerve signal measurement section. At this time, the bottom ends of the first measuring plate and the second measuring plate are respectively contacted with the two ends of the position to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure after the present invention is split;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0023] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of the middle B area;

[0024] Figure 5 It is a schematic diagram of the structure of some parts of the present invention after being cut away;

[0025] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the middle C region;

[0026] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of the D region in the middle;

[0027] The figure marks in the drawings of the specification include: 1, hammer head; 2, hammer handle; 3, side plate; 4, grip; 5, partition; 6, limit block; 7, connecting seat; 8, positioning ring; 9, connecting handle; 10, first slide groove; 11, card slot; 12, induction plate; 13, spring; 14, connecting frame; 15, tension spring; 16, fixing 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 slot; 29, fixing cylinder; 30, second slide groove; 31, first magnetic block; 32, baffle; 33, limit slot; 34, extension plate; 35, holding slot; 36, second magnetic block; 37, second gear. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0029] Example:

[0030] like Figures 1 to 7 As shown, the present invention provides a percussion hammer for tendon reflex examination, including a handle 4 and a knocking assembly, the top of the handle 4 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 provided 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 a side plate 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 assembly is arranged on the connecting seat 7, and a sensing assembly is arranged at the bottom of the handle 4.

[0031] like Figure 1 , Figure 4 and Figure 5 As shown, a motor 26 is arranged inside any side plate 3, and a first gear 27 is coaxially connected to the output shaft end of the motor 26, and a second gear 37 coaxially connected to the rotating shaft 23 is meshed. The motor 26 is a stepping motor controlled by an external controller.

[0032] like Figure 1 and Figure 4As shown, a protective shell 22 is provided on the outer side cover of the motor 26, and the protective shell 22 is slidably clamped on the inner side of the side plate 3 where the motor 26 is provided. Connecting blocks 25 are provided 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 to the connecting seat 7.

[0033] like Figures 1 to 3 As shown, the pre-positioning assembly includes a connecting handle 9 connected to the top of the connecting seat 7, and a positioning ring 8 is connected to the top 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] like Figures 1 to 3 As shown, a test assembly is provided on the connecting handle 9, and the test assembly includes a fixing rod 16 slidably clamped on the connecting handle 9, and both ends of the fixing rod 16 are respectively connected to a tension spring 15 and a connecting frame 14, and one end of the connecting frame 14 is connected to a sensing plate 12 through a spring 13. 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.

[0035] like Figure 3 and Figure 6 As shown, 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 fixed rod 16, and the two sliders 17 are respectively slidably clamped in the two first slide grooves 10, and a fixed cylinder 29 is provided on one side of the connecting handle 9. The inner wall of the fixed 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 fixed cylinder 29. The second slide grooves 30 have the same size as the first slide grooves 10 and are arranged in the same horizontal plane.

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

[0037] The test assembly can test the final striking force of the hammer head 1. When the output shaft angle of the motor 26 needs to be recorded in different postures for the first use or the output shaft angle of the motor 26 needs to be re-adjusted after long-term use, the end of the connecting frame 14 provided with the induction plate 12 is aligned with the top of the positioning ring 8, and then the output shaft of the motor 26 is rotated to store energy in the torsion spring 18. After the energy is stored to the estimated degree, the hammer handle 2 is released, 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 hits the induction plate 12, and the induction plate 12 will record the striking force data. At the same time, the induction plate 12 will move backward to allow the spring 13 to absorb the impact. After adjusting the output shaft angle 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, and the connecting frame 14 is pulled outward 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 on the outside of the fixed rod 16 move out of the two first slide grooves 10. At this time, the connecting frame 14 is rotated 180 degrees and the connecting frame 14 is released. The connecting frame 14 will slide along the fixed tube 29 under the tension of the tension spring 15, and the fixing rod 16 will slide into the fixing tube 29. At the same time, the connecting frame 14 will be synchronously inserted into the card slot 11, and the sensor plate 12 connected to the connecting frame 14 by the spring 13 will be moved to the side of the partition 5 for storage, so that the device changes from the debugging state to the working state.

[0038] like Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, four holding grooves 35 are opened on the outer side of the handle 4, and 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. The two extension plates 34 and the inner side of the handle 4 jointly form a limiting groove 33. The first measuring plate 19 and the second measuring plate 20 are respectively clamped on the inner sides of the two limiting grooves 33, and the first measuring plate 19 and the second measuring plate 20 are hinged.

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

[0040] like Figure 1 , Figure 4 and Figure 7 As shown, a storage assembly is provided at the bottom of the handle 4, and the storage assembly includes a baffle 32 slidably mounted at the bottom of the handle 4, and 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 of the handle 4, and the first magnetic block 31 and the second magnetic block 36 are both arranged in the same horizontal plane with the baffle 32, and both ends of the baffle 32 have magnetic force.

[0041] The sensing component can detect the patient's senses. When it is necessary to test the signal conduction status of a certain section of the patient's nerves, manually slide the baffle 32 to disengage the baffle 32 from the first magnetic block 31 and engage the baffle 32 with the second magnetic block 36. At this time, slide the first measuring plate 19 and the second measuring plate 20 downward, and after the first measuring plate 19 and the second measuring plate 20 slide to the bottom of the limit groove 33, rotate the first side plate 3, and align the outer edge of the first side plate 3 with the scale 21 corresponding to the length on the second measuring plate 20 according to the length of the nerve signal measurement section. At this time, the bottom ends of the first measuring plate 19 and the second measuring plate 20 can be respectively contacted with the two ends of the position to be measured.

[0042] The specific usage and function of this embodiment are as follows:

[0043] The hammer handle 2 provided in the present invention can store energy through the motor 26, and the output shaft rotation angle of the motor 26 at different knocking positions can be recorded through the controller connected to the outside of the motor 26, so that the same force is used for each percussion. After the test is carried out through the cooperation of the test component and the energy storage degree record of all knocking positions is completed, when the device needs to be used for percussion, the controller will drive the motor 26 to work according to the record, and the output shaft of the motor 26 will rotate. The first gear 27 provided at the output shaft end of the motor 26 drives the rotating shaft 23 where the second gear is located to rotate, and the hammer handle 2 where the rotating shaft 23 is located will also rotate synchronously, and the torsion spring 18 provided 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, the outer side of the positioning ring 8 in the pre-positioning component is placed on the part of the patient that needs to be percussed, and the locking of the output shaft of the motor 26 is released. The hammer handle 2 will quickly reset and knock under the elastic force of the torsion spring 18;

[0044] In order to reduce the test error, it is necessary to lubricate the first gear 27 and the second gear regularly. When the lubricant needs to be replenished, unscrew the two fastening screws 24 and move the protective shell 22 horizontally so that the protective shell 22 is stuck in the side plate 3 close to it. At this time, the lubricant can be replenished for the first gear 27 and the second gear. After the lubricant is replenished, the protective shell 22 is reset and the fastening screws 24 are screwed back into the connecting seat 7 through the connecting block 25.

[0045] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records 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) and a striking component, wherein the top of the handle (4) 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).

2. A percussion hammer for tendon reflex examination according to claim 1, characterized in that: A motor (26) is arranged on the inner side of any of the side plates (3); the output shaft end of the motor (26) is coaxially connected to a first gear (27), which is meshed with a second gear (37) coaxially connected to the rotating shaft (23); and the motor (26) is a stepping motor controlled by an external controller.

3. A percussion hammer for tendon reflex examination according to claim 2, 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).

4. A percussion hammer for tendon reflex examination according to claim 3, characterized in that: The pre-positioning assembly comprises a connecting handle (9) connected to the top end of the connecting seat (7), the top end of the connecting handle (9) being connected to a positioning ring (8), and when the hammer handle (2) is located in a vertical direction, one end of the hammer head (1) contacts the inner side of the positioning ring (8).

5. A percussion hammer for tendon reflex examination according to claim 4, characterized in that: 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).

6. A percussion hammer for tendon reflex examination according to claim 5, 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.

7. A percussion hammer for tendon reflex examination according to claim 6, 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.

8. A percussion hammer for tendon reflex examination according to claim 7, 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.

9. A percussion hammer for tendon reflex examination according to claim 8, 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.

10. A percussion hammer for tendon reflex examination according to claim 9, 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.

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