CN116421147A

CN116421147A - Leg clamp and knee joint sensor fixing device

Info

Publication number: CN116421147A
Application number: CN202310403369.6A
Authority: CN
Inventors: 郭燕林; 张伟
Original assignee: Jiangsu Tyco Berman Medical Equipment Co ltd
Current assignee: Jiangsu Tyco Berman Medical Equipment Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-07-14
Anticipated expiration: 2043-04-14
Also published as: CN116421147B

Abstract

The utility model relates to the technical field of surgical leg rehabilitation, in particular to a leg clamp and a knee joint sensor fixing device, wherein the clamp comprises a clamping assembly, a driving assembly and a limiting assembly; the clamping assembly comprises two clamping jaws and sliding pieces connected with the clamping jaws, and the two sliding pieces are provided with corresponding rack structures; the driving component comprises a gear, a connecting column connected with the gear and a driving piece connected with the connecting column; the limiting component comprises a limiting part sleeved on the connecting column, a limiting part arranged on the upper surfaces of the two sliding parts, and a cover body covered on the two sliding parts, wherein the cover body is provided with a limiting groove; the depth of the limiting groove is larger than the thickness of the limiting piece, when the limiting piece is separated from the limiting portion, the two clamping jaws are unlocked, and when the limiting piece is contacted with the limiting portion and the limiting groove at the same time, the distance between the two clamping jaws is limited in the allowable range of the limiting portion. Through the arrangement of the structure, the clamping convenience of the clamping jaw and wearing comfort are improved.

Description

Leg clamp and knee joint sensor fixing device

Technical Field

The utility model relates to the technical field of surgical leg rehabilitation, in particular to a leg clamp and a knee joint sensor fixing device.

Background

In the field of surgical leg rehabilitation, a patient is often required to wear some wearable exoskeleton mechanisms to fix the legs of the patient or measure parameters, and when the wearable mechanisms are worn on the legs of a human body, certain clamps are required to be used for fixing the wearable mechanisms at the positions of the legs;

in the prior art, the leg of a person is fixed in a hoop mode, for example, a Chinese patent of an authorized bulletin No. CN202515666U discloses a wearable exoskeleton mechanism for detecting movement information of a knee joint of a lower limb of a person in 2012, which mainly comprises a thigh member, a shank member, a knee rotary joint, a thigh wearing tool and a shank wearing tool, wherein the thigh member is fixed on the thigh of the person through the thigh wearing tool, the shank member is fixed on the shank of the person through the shank wearing tool, and then the exoskeleton mechanism moves with the leg of the person and acquires the movement information of the leg by utilizing a photoelectric encoder;

however, when implementing the above scheme, the inventor finds that the thigh wearing tool and the shank wearing tool are fixed in a hoop form by adopting two arc-shaped sheets, and the reliable fixing of the legs can be realized by tightening the screws at the open ends, however, the long-term wearing can cause discomfort to the human body, and the clamp in the hoop form is also complicated in fixing and taking down.

Disclosure of Invention

In view of at least one of the above technical problems, the present utility model provides a leg clamp and a knee joint sensor fixing device, which adopt structural improvement to improve the wearing comfort and convenience of the leg clamp.

According to a first aspect of the present utility model there is provided a leg clamp comprising a clamping assembly, a drive assembly and a limit assembly;

the clamping assembly comprises two oppositely arranged clamping jaws and sliding pieces connected with the tops of the two clamping jaws respectively, the two sliding pieces are arranged in parallel, corresponding rack structures are arranged on the opposite surfaces of the two sliding pieces, and the clamping assembly is also provided with a first reset spring for pulling the two clamping jaws to move towards the direction close to each other;

the driving component comprises gears which are connected in a rotating way and meshed with the rack structures on the two sliding pieces, connecting columns connected with the gears, and driving pieces connected with the connecting columns;

the limiting assembly comprises a limiting part sleeved on the connecting column, limiting parts arranged on the upper surfaces of the two sliding parts, and a cover body covered on the two sliding parts, wherein the cover body is provided with a limiting groove, and the limiting groove is arranged towards the upper surfaces of the two sliding parts;

the depth of the limiting groove is larger than the thickness of the limiting piece, so that the limiting piece moves in the depth direction of the limiting groove, when the limiting piece is separated from the limiting portion, the two clamping jaws are unlocked, and when the limiting piece is simultaneously contacted with the limiting portion and the limiting groove, the distance between the two clamping jaws is limited in the allowable range of the limiting portion.

In some embodiments of the present utility model, the limiting part is a stop block arranged on the sliding part at intervals, the limiting part is provided with a stop bar adapted to the stop block, and the distance between two adjacent stop blocks is larger than the width of the stop bar.

In some embodiments of the present utility model, the stop bar and the stop block are in a one-way pawl structure, so that the stop bar and the stop block can be relatively separated when the two clamping jaws are far away from each other, and the stop bar and the stop block are abutted when the two clamping jaws are close to each other.

In some embodiments of the utility model, the device further comprises a bottom plate, wherein the bottom plate is provided with a guide part matched with the sliding piece.

In some embodiments of the present utility model, the bottom plate is further provided with a limiting cavity for the connecting column to move up and down, and a second reset spring for resetting the connecting column is arranged in the limiting cavity.

In some embodiments of the present utility model, the sliding members are L-shaped, and the two sliding members are arranged in a central symmetry manner, and the top of the clamping jaw is provided with a notch through which the sliding members pass.

In some embodiments of the present utility model, the clamping jaw body has a hollowed-out hole.

According to a second aspect of the present utility model, there is also provided a knee joint sensor fixing apparatus including:

the support is of a plate-shaped structure and comprises a first support piece and a second support piece connected with the first support piece, and the free ends of the first support piece and the second support piece are respectively provided with an opening cavity for placing a sensor;

a leg clamp as claimed in any one of the first aspects, the leg clamp being secured to the first and second supports;

the first support piece is further provided with a positioning hole in the middle of the support, the positioning hole is used for positioning a knee patella of a leg, the two leg clamps are respectively used for clamping thighs and calves of a human body, and the opening cavity is used for attaching the sensor to the thighs and the calves of the human body.

In some embodiments of the utility model, the first support and the second support are slidably connected relative to each other in a width direction of the bracket.

In some embodiments of the utility model, the bottom of the open cavity and one side far away from the bracket are arranged in an opening way, the inner wall of the open cavity is provided with a telescopic abutting piece, the side wall of the sensor is provided with a sliding groove arranged transversely, and the top of the open cavity is also provided with a pressing component which presses towards the bottom direction and is used for separating the sensor from the bottom of the open cavity.

The beneficial effects of the utility model are as follows: according to the clamp disclosed by the utility model, the distance between the two clamping jaws is adjusted through the arrangement of the gear on the driving assembly and the rack structure on the sliding piece, and the clamping jaw distance is locked through the limiting piece arranged on the connecting column.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a mounting position structure of a leg clamp according to an embodiment of the present utility model;

FIG. 2 is a schematic exploded view of a leg clamp according to an embodiment of the present utility model;

FIG. 3 is a schematic exploded view of a leg clamp according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional structural view of a leg clamp in an embodiment of the utility model;

FIG. 5 is a schematic diagram of a connection structure between a slider and a driving assembly according to an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of FIG. 5 according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a connection structure between a clamping jaw and a sliding member according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a knee sensor fixation device according to an embodiment of the present utility model;

FIG. 9 is a schematic view showing the structure of the first support member and the second support member of the knee joint sensor fixing device according to the embodiment of the present utility model;

FIG. 10 is a schematic view of a sensor mounting release structure at an open cavity in an embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The leg clamp shown in fig. 1 to 7, as shown in fig. 2, includes a clamping assembly 11, a driving assembly 12, and a limiting assembly 13;

referring to fig. 3, in some embodiments of the present utility model, the clamping assembly 11 includes two opposite clamping jaws 11a and sliding members 11b respectively connected to the top of the two clamping jaws 11a, the two sliding members 11b are arranged in parallel, opposite surfaces of the two sliding members 11b have corresponding rack structures, and the clamping assembly 11 further has a first return spring for pulling the two clamping jaws 11a to move toward a direction approaching to each other; in the embodiment of the utility model, the sliding piece 11b can slide along the parallel direction of the two clamping jaws 11a, and the two clamping jaws 11a are driven to approach or separate by the sliding of the sliding piece 11b, so that the clamping distance of the clamping jaws 11a is changed to adapt to legs with different thicknesses; the first return spring has the function of pulling the two clamping jaws 11a towards each other when the two clamping jaws 11a are far away, so as to provide clamping force for clamping the clamping jaws 11 a;

with continued reference to fig. 2 and 3, the driving assembly 12 includes a gear 12a rotatably connected to and meshed with the rack structures on the two sliding members 11b, a connecting post 12b connected to the gear 12a, and a driving member 12c connected to the connecting post 12 b; as shown in fig. 2, since the racks of the two sliders 11b are disposed opposite to each other, by simultaneously meshing with the gear 12a, synchronous movement in opposite directions can be achieved; as shown in fig. 2, when the gear 12a rotates in the counterclockwise direction, the two jaws 11a are away from each other, whereas the two jaws 11a are close to each other; it should be noted that, in the embodiment of the present utility model, the driving member 12c may take various forms, which may be implemented in the form of a hand wheel as shown in fig. 2 and 3, or may be implemented in the form of a rotational drive such as a motor, etc., and by this drive mode, the operation is facilitated;

with continued reference to fig. 2 to 4, the limiting component 13 includes a limiting member 13a sleeved on the connecting post 12b, a limiting portion 13b disposed on the upper surfaces of the two sliding members 11b, and a cover 14 covering the two sliding members 11b, wherein the cover 14 has a limiting slot 13c, and the limiting slot 13c is disposed towards the upper surfaces of the two sliding members 11 b; in the embodiment of the utility model, the limiting piece 13a is sleeved on the connecting column 12b, the limiting groove 13c is perpendicular to the sliding directions of the two sliding pieces 11b, and the limiting piece 13a always keeps the direction perpendicular to the moving direction of the sliding pieces 11b by the limitation of the limiting groove 13 c;

as shown in fig. 4, the depth of the limit groove 13c is larger than the thickness of the limit piece 13a to achieve movement of the limit piece 13a in the depth direction of the limit groove 13c, when the limit piece 13a is separated from the limit portion 13b, the two jaws 11a are unlocked, and when the limit piece 13a is simultaneously in contact with the limit portion 13b and the limit groove 13c, the distance of the two jaws 11a is limited within the allowable range of the limit portion 13 b. It should be noted that, in some embodiments of the present utility model, the limiting portion 13b may be a protruding structure or a groove structure, when the connecting post 12b is pulled up by a certain distance to make the connecting post 12b drive the limiting members 13a to move together toward the top of the limiting groove 13c during specific operation, the limiting members 13a are separated from the limiting portion 13b, at this time, the connecting post 12b is rotated to implement adjustment of the distance between the clamping jaws 11a, and when the connecting post 12b is adjusted to a suitable position, the bottom of the limiting members 13a is pressed down to make contact with the limiting portion 13b, as shown in fig. 4, the upper half of the limiting members 13a is still in the limiting groove 13c, so as to lock the positions of the two limiting members 13 a; through the structure setting, when carrying out the centre gripping to thigh or shank of different thickness, only need lift spliced pole 12b and rotate and can adjust, when adjusting to suitable position, press spliced pole 12b and can realize the locking of position, and then make clamping jaw 11 a's distance adjustment more convenient and reliable, because the process of adjustment need not to contact with human shank, also can improve human travelling comfort.

In the above embodiment, the adjustment of the distance between the two clamping jaws 11a is achieved through the arrangement of the gear 12a on the driving assembly 12 and the rack structure on the sliding piece 11b, and the locking of the distance between the clamping jaws 11a is achieved through the limiting piece 13a arranged on the connecting post 12 b.

On the basis of the above embodiment, as shown in fig. 5 and 6, regarding the specific structure of the limiting portion 13b, the limiting portion 13b is a stopper provided on the slider 11b at intervals, the stopper 13a has a stopper bar 13a1 adapted to the stopper, and the distance between two adjacent stopper bars is larger than the width of the stopper bar 13a 1. Through the setting of the dog that the interval set up for slider 11b is locked by locating part 13a after, can carry out the adjustment of certain degree in the distance of the clearance between two dogs, and then under the effect of the spacing portion 13b that the cooperation interval set up of the effect of first reset spring, even after locating part 13a locks, wear the clamping jaw 11a on human shank still can realize the adjustment of certain degree distance, through the setting of above-mentioned mode, further improved the travelling comfort that the human body was worn.

In order to further improve the safety of the clamping jaw 11a, as shown in fig. 6, the blocking strip 13a1 and the stop block are in a one-way pawl structure, so that the blocking strip 13a1 and the stop block can be separated relatively when the two clamping jaws 11a are far away from each other, and the blocking strip 13a1 is abutted with the stop block when the two clamping jaws 11a are close to each other. The unidirectional pawl means that when the gear 12a drives the two sliding members 11b to move away from each other, the contact surface of the stop block and the stop bar 13a1 is an arc surface as shown in fig. 6, or can be an inclined surface, and by the arrangement of the structure, when the gear 12a is rotated, the stop block can give an upward component force to the stop bar 13a1, so that the stop member 13a rises a certain distance; in this way, when an emergency situation occurs or the locked clamping jaws 11a need to be separated quickly, the separation between the limiting piece 13a and the limiting part 13b can be realized by pulling the two clamping jaws 11a outwards; when the clamping jaw 11a fixed on the leg of the human body is subjected to external force, as shown in fig. 6, the other surface where the stop bar 13a1 is contacted with the stop block is in straight surface fitting contact due to abutting connection between the limiting piece 13a and the limiting part 13b, and by the limitation, when the clamping jaw 11a is subjected to external force to enable the clamping jaw 11a to approach each other, acting force between the stop block and the stop bar 13a1 can play a role of preventing the clamping jaw 11a from approaching further, and further, the leg of the human body is protected.

With continued reference to fig. 3 and 4, in an embodiment of the present utility model, the apparatus further includes a bottom plate 15, and the bottom plate 15 has a guiding portion 15a that cooperates with the sliding member 11 b. The guide portion 15a may be a sliding rail or a sliding groove, and a slider or a guide rail corresponding to the guide portion 15a is provided at the bottom of the sliding member 11b, however, those skilled in the art may also provide other conventional linear guide structures to achieve the above object. By this arrangement, the accuracy of movement of the slider 11b and the service life of the device can be improved.

With respect to the up-and-down movement of the connection post 12b, in some embodiments of the present utility model, as shown in fig. 4, the bottom plate 15 further has a limiting chamber 15b for the up-and-down movement of the connection post 12b, and the limiting chamber 15b has a second return spring for returning the connection post 12 b. Specifically, a boss may be disposed at the bottom of the connection post 12b, and the connection post 12b is restricted by the boss to separate from the limiting cavity 15b, and the second return spring abuts against the boss in the limiting cavity 15b, so as to keep the connection post 12b at a set position; in the embodiment of the present utility model, the fixing of the limiting member 13a may be provided with a screw thread on the connection post 12b, and the limiting of the position thereof in the height direction is achieved by sleeving the limiting member 13a on the connection post 12b and then by thin nuts on both sides thereof.

In some embodiments of the present utility model, in order to further improve wearing comfort of the clamping jaw 11a, as shown in fig. 7, the sliding members 11b are L-shaped, and the two sliding members 11b are arranged in a central symmetry manner, and a notch 11d is formed at the top of the clamping jaw 11a for the sliding member 11b to pass through. As shown in fig. 7, by the arrangement of the sliding member 11bL and the arrangement of the top notch 11d of the clamping jaw 11a, the two clamping jaws 11a can be clamped at the positions opposite to the two sides of the leg, the clamping position is not inclined, and the reliability of clamping can be improved. In addition, referring to fig. 7, in the embodiment of the present utility model, the clamping jaw 11a has a hollow hole on its body. Through the setting of fretwork portion 11a1, on the one hand can reduce the whole weight of clamping jaw 11a, on the other hand can also ventilate the heat dissipation to patient's clamping position to avoid long-term centre gripping to lead to the damage to the human body.

In another aspect of the embodiment of the present utility model, there is also provided a knee joint sensor fixing device for fixing a sensor 25 to a leg of a human body as shown in fig. 8 to 10, particularly as shown in fig. 8, the device including a bracket 2 and the above-mentioned leg jig 1 provided on the bracket 2;

as shown in fig. 8 in particular, the bracket 2 has a plate-like structure and comprises a first support 21 and a second support 22 connected to the first support 21, the free ends of the first support 21 and the second support 22 each having an open cavity 23 for the placement of a sensor 25;

the leg clamp 1 is fixed on a first support piece 21 and a second support piece 22, the first support piece 21 is further provided with a positioning hole 24 at the middle position of the bracket 2, the positioning hole 24 is used for positioning the patella of the leg, the two leg clamps 1 are respectively used for clamping the thigh and the shank of a human body, and the open cavity 23 is used for attaching the sensor 25 to the thigh and the shank of the human body. In the embodiment of the utility model, the first support piece 21 and the second support piece 22 are both in a plate-shaped structure, a certain included angle is formed between the first support piece 21 and the second support piece 22, the center of the included angle is arranged at the positioning hole 24, when the sensor 25 is placed specifically, the positioning hole 24 on the bracket 2 is sleeved at the patella position of the knee of the leg, then the first support piece 21 is attached to the front side of the thigh, the second support piece 22 is attached to the front side of the calf, and then the sensor 25 is placed in the opening cavities 23 at the two ends; in order to further achieve reliable fixation, the leg clamp 1 is clamped with the thigh and the calf, respectively; and then the sensor 25 is separated from the opening cavity 23, so that the sensor 25 is adhered to the thigh and the calf of a human body, the sensor 25 can be a six-axis posture sensor 25, and the device can be taken down from the leg after the sensor 25 is fixed, and the reliability and the convenience of the installation of the sensor 25 can be improved because the clamping of the leg clamp 1 is more convenient. After the fixing of the sensor 25 is completed, when the legs of a person move, the sensor 25 moves along with the legs, and the unified initial sensor 25 position determination is realized by using the device, so that the accuracy of acquiring various parameters of rehabilitation therapy can be improved. It should of course be pointed out here that the sensor 25 may also be another intelligent sensor, such as an angle sensor, a displacement sensor, etc.

In order to accommodate various leg types, such as X-type, O-type legs, etc., in the embodiment of the present utility model, the first support 21 and the second support 22 are slidably connected with each other in the width direction of the bracket 2. As shown in fig. 9, the first supporting member 21 and the second supporting member 22 are slidably connected in the width direction of the bracket 2, a specific sliding manner may be a sliding rail structure, or as shown in fig. 9, an upper cover is disposed at the connection position of the first supporting member 21 and the second supporting member 22, the upper cover is detachably connected with the first connecting member and forms a rectangular open cavity, and the end part of the second supporting member 22 is provided with a rectangular strip which can be clamped into the open cavity, so that the transverse sliding of the second supporting member 22 can be realized; in this way, after the first support member 21 is attached to the thigh by the leg clamp 1, if the thigh and the shank are non-straight legs, the second support member 22 can be made to correspond to the shank by means of the lateral sliding of the second support member 22, and then the shank is fixed by the leg clamp 1. By means of the slidable connection, the applicability of the device is improved, and the accuracy of the fixed sensor 25 is also improved.

In order to improve the accuracy of placement of the sensor 25, in the embodiment of the present utility model, as shown in fig. 10, the bottom of the open cavity 23 and the side remote from the bracket 2 are opened, a telescopic abutment 23a is provided on the inner wall of the open cavity 23, a sliding groove 25a is provided laterally on the side wall of the sensor 25, and a pressing component 23b is provided on the top of the open cavity 23 to press toward the bottom for separating the sensor 25 from the bottom of the open cavity 23. During specific operation, the sensor 25 is transversely inserted into the open cavity 23 from two ends, the consistency of the placement position of the sensor 25 can be ensured due to the cooperation of the abutting piece 23a and the sliding groove 25a, then the pressing component 23b is used for applying force downwards, the abutting piece 23a is contracted into the inner wall under the action of external force, the sensor 25 is separated from the opening at the bottom of the open cavity 23, and the fixing of the sensor 25 is realized in a mode of presetting an adhesive layer at the bottom of the sensor 25.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The leg clamp is characterized by comprising a clamping assembly, a driving assembly and a limiting assembly;

2. The leg clamp according to claim 1, wherein the limiting portions are stoppers arranged on the sliding member at intervals, the limiting members are provided with stop bars adapted to the stoppers, and the distance between two adjacent stoppers is larger than the width of the stop bars.

3. The leg clamp of claim 2, wherein the bar and the stop are of a one-way pawl structure such that the bar and the stop are relatively disengaged when the two jaws are spaced apart from each other, and the bar and the stop are abutted when the two jaws are spaced apart from each other.

4. The leg clamp of claim 1, further comprising a base plate having a guide thereon that mates with the glide.

5. The leg clamp according to claim 4, wherein the bottom plate is further provided with a limiting cavity for the connecting column to move up and down, and a second return spring for the connecting column to return is arranged in the limiting cavity.

6. The leg clamp according to claim 1, wherein the sliding members are L-shaped and are arranged in a central symmetry manner, and the top of the clamping jaw is provided with a notch through which the sliding members pass.

7. The leg clamp according to claim 1, wherein the jaw body has a hollowed-out hole therein.

8. A knee sensor fixation apparatus, comprising:

a leg clamp as claimed in any one of claims 1 to 7 secured to the first and second supports;

9. The knee sensor fixation apparatus of claim 8, wherein the first support and the second support are slidably coupled relative to each other in a width direction of the bracket.

10. The knee sensor fixation apparatus of claim 8, wherein the bottom of the open cavity and a side remote from the bracket are open, the inner wall of the open cavity has a telescopic abutment thereon, the side wall of the sensor has a laterally disposed sliding slot thereon, and the top of the open cavity has a pressing component that presses toward the bottom for disengaging the sensor from the bottom of the open cavity.