CN219835714U - Knee joint pressure measuring device - Google Patents

Abstract

The utility model discloses a knee joint pressure measuring device, and relates to the technical field of medical equipment. The utility model comprises a test pad, wherein a connecting plate is fixed on one side of the test pad, and an information receiver is connected to one side of the connecting plate through a connecting wire. When the knee joint replacement operation is performed, the test pad and the gasket are placed between the femur and the tibia of a patient, pressure information can be obtained through the baroreceptors, the received pressure information can be processed and displayed through the information receiver, the telescopic fixing rod is fixed with the connecting plate through the fixing component, then the two clamping blocks are placed on two sides of the ankle of the patient, the two clamping blocks can be mutually close through the power component, the two clamping blocks can fix the ankle of the patient, finally the two clamping blocks rotate along the hinge joint of the connecting block and the telescopic fixing rod, the telescopic fixing rod is parallel to the calf of the patient, and therefore the connecting plate can be supported, and the accuracy of knee joint pressure measurement can be increased as much as possible.

Description

Knee joint pressure measuring device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a knee joint pressure measuring device.

Background

In knee joint diseases, knee osteoarthritis is a major cause of pain in the legs and feet of elderly patients due to degeneration of the knee joint. In the aspect of knee joint treatment, total knee arthroplasty is one of the more successful operation methods for treating knee joint diseases at present, a femoral prosthesis is used for replacing a femoral surface in operation, a tibial prosthesis and a tibial gasket are used for replacing a tibial surface, and a contact surface between the femoral prosthesis and the tibial gasket forms a knee joint plane after operation.

An adjustable gap total knee arthroplasty knee joint pressure measurement device of the type mentioned in the prior art chinese publication (issued patent number: CN114452053 a) includes: a test pad; and (5) connecting a plate. The knee joint pressure measuring device for the total knee arthroplasty with adjustable gap can put the test pad and the gasket between the femur and the tibia of a patient, and can be attached to the gasket and the test pad according to the gap between the femur and the tibia of the patient by the gap adjusting mechanism, so that the gap between the femur and the tibia of the patient can be measured, and the device is simple to operate, and can save the time of operation.

When the knee joint replacement operation is carried out, the angle of the knee joint needs to be changed to a straightening position, so that the size of a gap between the femur and the tibia is changed, and pressure measurement is carried out on different gap sizes between the femur and the tibia through the pressure measurement device.

Disclosure of Invention

The utility model aims at: the utility model provides a knee joint pressure measuring device, which aims to solve the problems that a doctor needs to hold a connecting plate to measure pressure of different gaps between a femur and a tibia, the hands of the doctor shake easily, and the measuring result of the pressure measuring device is affected.

The utility model adopts the following technical scheme for realizing the purposes:

knee joint pressure measurement device, including the test pad, test pad one side is fixed with the connecting plate, connecting plate one side is connected with information receiver through the connecting wire, the test pad top is provided with the gasket, the gasket top all is provided with baroreceptor with the bottom of test pad, baroreceptor and information receiver electric connection, connecting plate one side is provided with flexible dead lever, flexible dead lever passes through fixed subassembly and connecting plate to be fixed, flexible dead lever bottom articulates there is the connecting block through the damping pivot, the spout has been seted up in the connecting block, the connecting block is located sliding connection in the spout has two grip blocks, the grip block cross-section is convex, be provided with the power component that is used for driving two grip blocks and is close to each other or keep away from in the connecting block.

By adopting the technical scheme, the two clamping blocks are used for fixing the ankle of the patient, so that the connecting plate can be supported, and the accuracy of knee joint pressure measurement can be improved as much as possible.

Further, the power component comprises a bidirectional threaded rod which is rotationally connected in the connecting block, threads with opposite rotation directions are arranged at two ends of the bidirectional threaded rod, the bidirectional threaded rod is located in the sliding groove, the two clamping blocks are in threaded connection with the bidirectional threaded rod, and a rotating button is fixed at one end of the bidirectional threaded rod.

Through adopting above-mentioned technical scheme, when two-way threaded rod rotates, can make two grip blocks be close to each other or keep away from.

Further, flexible dead lever includes flexible interior pole and flexible outer pole, the movable groove of flexible interior pole of adaptation has been seted up on the flexible outer pole, the screw hole has been seted up to flexible outer pole one side, screw hole threaded connection has to touch the pole, flexible interior pole is close to one side of touching the pole and is provided with the roughness, conflict pole one end is fixed with the fixed valve, the conflict pole other end is contradicted with the roughness.

Through adopting above-mentioned technical scheme, can adjust the length of flexible interior pole and flexible outer pole according to the length of patient's shank, make things convenient for the doctor to fix patient's ankle.

Further, the fixed subassembly is including setting up the gim peg in the connecting plate bottom, the through-hole has been seted up on the connecting plate, the gim peg is inserted and is established in the through-hole, the fixed slot of the flexible interior pole of adaptation has been seted up to the connecting plate bottom, the screw thread groove of the flexible interior pole of adaptation gim peg has been seted up to flexible interior pole one side.

By adopting the technical scheme, the fixing bolt in the through hole is screwed into the thread groove, so that the telescopic fixing rod and the connecting plate are fixed.

Further, the spacer bottom is fixed with the gag lever post, set up the spacing groove in the test pad, the test pad is located the spacing inslot and slides and be connected with the limiting plate, the limiting plate top is fixed with the gag lever post, the spacer bottom is fixed with and rotates and be connected with the pulley, the movable groove of adaptation pulley has been seted up on the test pad, set up the pushing groove in the test pad, the test pad is located the sliding connection in the pushing groove and has the pushing plate, pushing plate one side plane is to the connecting plate slope, be provided with the drive assembly who is used for driving the pushing plate and removes on the connecting plate, connecting plate one side is provided with the scale mark, the cavity has been seted up to connecting plate one side, the connecting plate is located the cavity sliding connection and has the connecting rod, connecting rod one end is fixed with the pushing plate, the connecting rod other end is fixed with the pointer.

Through adopting above-mentioned technical scheme, can drive the pointer and remove when the connecting rod removes, correspond the numerical value on the scale mark through the pointer, can observe out the clearance size between femur and the tibia, and then can make information receiver carry out pressure measurement to different clearance sizes.

Further, the transmission assembly comprises a rotating head which is rotationally connected to the connecting plate, a rotating groove is formed in the connecting plate, the bottom of the rotating groove is communicated with the pushing groove, the connecting plate is located in the rotating groove and rotationally connected with a gear, one end of the rotating head is fixed with the gear, a rack is fixed at the top of the pushing plate, and the rack is meshed with the gear.

Through adopting above-mentioned technical scheme, can drive the rack and remove when the gear rotates, and then can drive the impeller plate and remove.

In summary, the present utility model includes at least one of the following advantages;

1. when carrying out knee joint replacement operation, place test pad and gasket between patient's femur and tibia, can obtain pressure information through baroreceptor, can handle the pressure information that receives through the information receiver and show, it is fixed with the connecting plate to pass through fixed subassembly with flexible dead lever, then place two grip blocks in patient's ankle both sides, can make two grip blocks be close to each other through power assembly, can make two grip blocks fix patient's ankle, finally rotate along the articulated department of connecting block and flexible dead lever for flexible dead lever is parallel with patient's shank, thereby can support the connecting plate, with this accuracy that can make as far as possible increase knee joint pressure measurement.

2. The rotating head is rotated, the gear can be driven to rotate, and the rack is meshed with the gear, so that the rack can be driven to move when the gear rotates, the pushing plate can be driven to move, the pulley can be enabled to move upwards along the inclined plane of the pushing plate when the pushing plate moves towards one side of the pulley, the gasket can drive the limiting rod to move upwards, the distance between baroreceptors can be adjusted, meanwhile, the connecting rod can be driven to move when the pushing plate moves, the pointer can be driven to move when the connecting rod moves, the size of a gap between the femur and the tibia can be observed through the numerical value of the corresponding scale mark of the pointer, and the information receiver can conduct pressure measurement on different gap sizes.

Drawings

Fig. 1 is a schematic perspective view of a device body according to the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the utility model at A in FIG. 2;

FIG. 4 is an exploded view of the present utility model;

fig. 5 is an enlarged schematic view of the utility model at B in fig. 4.

Reference numerals illustrate:

1. a test pad; 2. a connecting plate; 3. an information receiver; 4. a gasket; 5. baroreceptors; 6. a telescopic fixed rod; 61. a telescopic inner rod; 62. a telescoping outer rod; 64. a rough surface; 65. a fixed valve; 7. a connecting block; 8. a clamping block; 9. a power assembly; 91. a two-way threaded rod; 92. a rotary knob; 10. a fixing assembly; 101. a fixing bolt; 11. a limit rod; 12. a limiting plate; 13. a pulley; 14. a pushing plate; 15. a scale mark; 16. a connecting rod; 17. a pointer; 18. a transmission assembly; 181. turning the head; 182. a gear; 183. a rack.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a knee joint pressure measuring device.

Referring to fig. 1 and 2, knee joint pressure measuring device, including test pad 1, test pad 1 one side is fixed with connecting plate 2, connecting plate 2 one side is connected with information receiver 3 through the connecting wire, test pad 1 top is provided with gasket 4, gasket 4 top and test pad 1's bottom all are provided with baroreceptor 5, baroreceptor 5 and information receiver 3 electric connection, connecting plate 2 one side is provided with flexible dead lever 6, flexible dead lever 6 is fixed with connecting plate 2 through fixed subassembly 10, flexible dead lever 6 bottom articulates through the damping pivot has connecting block 7, the spout has been seted up in the connecting block 7, connecting block 7 is located the spout and slides and be connected with two grip blocks 8, grip block 8 cross-section is convex, be provided with in the connecting block 7 and be used for driving two grip blocks 8 to be close to each other or the power pack 9 that keeps away from. When knee joint replacement surgery is performed, the test pad 1 and the gasket 4 are placed between the femur and the tibia of a patient, pressure information can be obtained through the baroreceptors 5, the received pressure information can be processed and displayed through the information receiver 3, the telescopic fixing rod 6 is fixed with the connecting plate 2 through the fixing component 10, then the two clamping blocks 8 are placed on two sides of the ankle of the patient, the two clamping blocks 8 can be mutually close to each other through the power component 9, the two clamping blocks 8 can fix the ankle of the patient, and finally the hinge joint of the connecting block 7 and the telescopic fixing rod 6 is rotated, so that the telescopic fixing rod 6 is parallel to the calf of the patient, the connecting plate 2 can be supported, and the accuracy of knee joint pressure measurement can be increased as much as possible.

Referring to fig. 1 and 2, the power assembly 9 includes a bidirectional threaded rod 91 rotatably connected in the connecting block 7, threads with opposite rotation directions are provided at two ends of the bidirectional threaded rod 91, the bidirectional threaded rod 91 is located in the chute, two clamping blocks 8 are in threaded connection with the bidirectional threaded rod 91, and a rotary knob 92 is fixed at one end of the bidirectional threaded rod 91. The rotation knob 92 can drive the bidirectional threaded rod 91 to rotate, and as the two clamping blocks 8 are in threaded connection with the bidirectional threaded rod 91, when the bidirectional threaded rod 91 rotates, the two clamping blocks 8 can be mutually close to or far away from each other.

Referring to fig. 1 and 2, the telescopic fixed rod 6 includes a telescopic inner rod 61 and a telescopic outer rod 62, a movable groove adapted to the telescopic inner rod 61 is formed in the telescopic outer rod 62, a threaded hole is formed in one side of the telescopic outer rod 62, an abutting rod is connected with the threaded hole in a threaded manner, a rough surface 64 is arranged on one side, close to the abutting rod, of the telescopic inner rod 61, a fixed valve 65 is fixed at one end of the abutting rod, and the other end of the abutting rod abuts against the rough surface 64. Pulling flexible interior pole 61 for flexible interior pole 61 and flexible outer pole 62 are to suitable length, then rotate fixed valve 65, can drive to support the feeler lever and remove to flexible interior pole 61 one side, make conflict pole one end conflict with rough surface 64, thereby can make flexible interior pole 61 and flexible outer pole 62's length fixed, with this length that can adjust flexible interior pole 61 and flexible outer pole 62 according to patient's shank, make things convenient for the doctor to patient's ankle to be fixed.

Referring to fig. 2, the fixing assembly 10 includes a fixing bolt 101 disposed at the bottom of the connection plate 2, a through hole is formed in the connection plate 2, the fixing bolt 101 is inserted into the through hole, a fixing groove adapted to the telescopic inner rod 61 is formed at the bottom of the connection plate 2, and a thread groove adapted to the fixing bolt 101 is formed at one side of the telescopic inner rod 61. The telescopic inner rod 61 is inserted into the fixing groove, then the fixing bolt 101 in the through hole is screwed into the threaded groove, so that the telescopic inner rod 61 and the connecting plate 2 can be fixed, the telescopic fixing rod 6 and the connecting plate 2 can be fixed, and the telescopic fixing rod 6 can be detached from the connecting plate 2 by reverse operation.

Referring to fig. 2-5, a limit rod 11 is fixed at the bottom of a gasket 4, a limit groove is formed in a test pad 1, a limit plate 12 is slidably connected in the limit groove, the top of the limit plate 12 is fixed with the limit rod 11, a pulley 13 is fixedly connected at the bottom of the gasket 4 in a rotating way, a movable groove for adapting to the pulley 13 is formed in a test pad 1 piece, a pushing groove is formed in the test pad 1 piece, a pushing plate 14 is slidably connected in the pushing groove, one side of the pushing plate 14 is inclined towards a connecting plate 2, a transmission assembly 18 for driving the pushing plate 14 to move is arranged on the connecting plate 2, a scale mark 15 is arranged on one side of the connecting plate 2, a cavity is formed in one side of the connecting plate 2, a connecting rod 16 is slidably connected in the cavity, one end of the connecting rod 16 is fixed with the pushing plate 14, and a pointer 17 is fixed at the other end of the connecting rod 16. The pushing plate 14 is moved to one side of the pulley 13 through the transmission assembly 18, the pulley 13 can be made to move upwards along the inclined plane of the pushing plate 14, the spacer 4 drives the limiting rod 11 to move upwards, the distance between baroreceptors 5 can be adjusted, meanwhile, the connecting rod 16 can be driven to move when the pushing plate 14 moves, the pointer 17 can be driven to move when the connecting rod 16 moves, the size of a gap between a femur and a tibia can be observed through the numerical value of the pointer 17 corresponding to the scale mark 15, and the information receiver 3 can be made to measure pressure on different gap sizes.

Referring to fig. 2 and 3, the transmission assembly 18 includes a rotating head 181 rotatably connected to the connection plate 2, a rotation groove is formed in the connection plate 2, the bottom of the rotation groove is communicated with the pushing groove, the connection plate 2 is located in the rotation groove and rotatably connected with a gear 182, one end of the rotating head 181 is fixed with the gear 182, a rack 183 is fixed at the top of the pushing plate 14, and the rack 183 is meshed with the gear 182. The rotating head 181 can drive the gear 182 to rotate, and the rack 183 is meshed with the gear 182, so that the rack 183 can be driven to move when the gear 182 rotates, and the pushing plate 14 can be driven to move.

Working principle: when knee joint replacement surgery is performed, the test pad 1 and the gasket 4 are placed between the femur and the tibia of a patient, pressure information can be obtained through the baroreceptors 5, the received pressure information can be processed and displayed through the information receiver 3, the telescopic inner rod 61 is inserted into the fixing groove, then the fixing bolt 101 in the through hole is screwed into the threaded groove, the telescopic inner rod 61 and the connecting plate 2 can be fixed, the telescopic fixing rod 6 and the connecting plate 2 can be fixed, then the two clamping blocks 8 are placed on two sides of the ankle of the patient, the rotating knob 92 can drive the bidirectional threaded rod 91 to rotate, the two clamping blocks 8 are connected with the bidirectional threaded rod 91 in a threaded manner, the two clamping blocks 8 can be driven to be close to each other when the bidirectional threaded rod 91 rotates, the two clamping blocks 8 are used for fixing the ankle of the patient, and finally the hinged position of the telescopic fixing rod 6 and the lower leg of the patient can be rotated along the connecting block 7, so that the telescopic fixing rod 6 and the lower leg of the patient can be supported, and the accuracy of knee joint pressure measurement can be increased as much as possible. The rotating head 181 can drive the gear 182 to rotate, and because the rack 183 is meshed with the gear 182, the rack 183 can be driven to move when the gear 182 rotates, and then the pushing plate 14 can be driven to move, when the pushing plate 14 moves to one side of the pulley 13, the pulley 13 can be enabled to move upwards along the inclined plane of the pushing plate 14, the gasket 4 can drive the limit rod 11 to move upwards, the distance between baroreceptors 5 can be adjusted, meanwhile, when the pushing plate 14 moves, the connecting rod 16 can be driven to move, and when the connecting rod 16 moves, the pointer 17 can be driven to move, the size of the gap between the femur and the tibia can be observed through the numerical value of the pointer 17 corresponding to the scale mark 15, and then the information receiver 3 can conduct pressure measurement on different gap sizes.

Claims (6)

1. Knee joint pressure measurement device, including test pad (1), its characterized in that: the test pad is characterized in that a connecting plate (2) is fixed on one side of the test pad (1), one side of the connecting plate (2) is connected with an information receiver (3) through a connecting wire, a gasket (4) is arranged at the top of the test pad (1), baroreceptors (5) are arranged at the top ends of the gasket (4) and the bottom of the test pad (1), the baroreceptors (5) are electrically connected with the information receiver (3), a telescopic fixing rod (6) is arranged on one side of the connecting plate (2), the telescopic fixing rod (6) is fixed with the connecting plate (2) through a fixing component (10), a connecting block (7) is hinged to the bottom of the telescopic fixing rod (6) through a damping rotating shaft, a sliding groove is formed in the connecting block (7), two clamping blocks (8) are connected in a sliding manner in the sliding groove, and the section of each clamping block (8) is arc-shaped, and a power component (9) used for driving the two clamping blocks (8) to be close to or far away from each other is arranged in the connecting block (7).

2. The knee joint pressure measurement apparatus according to claim 1, wherein: the power assembly (9) comprises a bidirectional threaded rod (91) which is rotationally connected in the connecting block (7), threads with opposite rotation directions are arranged at two ends of the bidirectional threaded rod (91), the bidirectional threaded rod (91) is located in the sliding groove, the two clamping blocks (8) are in threaded connection with the bidirectional threaded rod (91), and a rotating button (92) is fixed at one end of the bidirectional threaded rod (91).

3. The knee joint pressure measurement apparatus according to claim 1, wherein: the telescopic fixed rod (6) comprises a telescopic inner rod (61) and a telescopic outer rod (62), a movable groove for adapting to the telescopic inner rod (61) is formed in the telescopic outer rod (62), a threaded hole is formed in one side of the telescopic outer rod (62), the threaded hole is connected with a contact supporting rod in a threaded mode, a rough surface (64) is arranged on one side, close to the contact supporting rod, of the telescopic inner rod (61), a fixed valve (65) is fixed to one end of the contact supporting rod, and the other end of the contact supporting rod is in contact with the rough surface (64).

4. A knee joint pressure measurement apparatus according to claim 3, wherein: the fixing assembly (10) comprises a fixing bolt (101) arranged at the bottom of the connecting plate (2), a through hole is formed in the connecting plate (2), the fixing bolt (101) is inserted into the through hole, a fixing groove for adapting to the telescopic inner rod (61) is formed in the bottom of the connecting plate (2), and a thread groove for adapting to the fixing bolt (101) is formed in one side of the telescopic inner rod (61).

5. The knee joint pressure measurement apparatus according to claim 1, wherein: the utility model discloses a test pad, including gasket (4), connecting plate (2), connecting plate (16) and connecting plate (16), the spacer (4) bottom is fixed with gag lever post (11), has offered gag lever post (11) in gasket (4) bottom, has offered the spacing groove in test pad (4), has offered the removal groove of adaptation pulley (13) in test pad (1), test pad (1) are located and slide in the promotion groove and are connected with pushing plate (14), pushing plate (14) one side plane is inclined to connecting plate (2), be provided with on connecting plate (2) and be used for driving drive assembly (18) that pushing plate (14) removed, connecting plate (2) one side is provided with scale mark (15), connecting plate (2) one side has offered the cavity, connecting rod (16) are located cavity sliding connection, connecting rod (16) one end is fixed with pushing plate (14), the other end is fixed with pointer (17).

6. The knee joint pressure measurement apparatus according to claim 5, wherein: the transmission assembly (18) comprises a rotating head (181) which is rotationally connected to the connecting plate (2), a rotating groove is formed in the connecting plate (2), the bottom of the rotating groove is communicated with the pushing groove, the connecting plate (2) is located in the rotating groove and rotationally connected with a gear (182), one end of the rotating head (181) is fixed with the gear (182), a rack (183) is fixed at the top of the pushing plate (14), and the rack (183) is meshed with the gear (182).