CN114699230B - Lower limb protector - Google Patents

Abstract

The invention provides a lower limb supporter, comprising a thigh support and a calf support, the thigh support is movably connected with the calf support, and also includes an airbag assembly, the airbag assembly includes an airbag cushion arranged on the inner wall of the calf support, an airbag ring that can be sleeved on the thigh, And a catheter assembly connecting the airbag cushion and the airbag ring, the airbag cushion is pre-filled with gas, and the catheter assembly is provided with an electric control assembly that can control the gas in the airbag cushion to be inflated into the airbag ring or control the gas to flow back into the airbag cushion. The present invention can prevent and delay muscle atrophy of lower limbs well while protecting the lower limbs from secondary injury by providing a lower limb protector capable of preventing and delaying muscle atrophy of the lower limbs.

Description

A lower extremity protector

technical field

The invention relates to the technical field of medical devices, in particular to a lower limb supporter.

Background technique

In real life, after the lower limb is injured, in order to avoid secondary injury to the lower limb, the hospital usually wears lower limb protective gear on the injured lower limb of the patient, so as to protect the lower limb through the restraint effect of the lower limb protective gear, so as to avoid the lower limb suffering from secondary injury. secondary damage.

However, because the lower limb protector has a certain movement restriction on the lower limb, it will cause the muscles to be immobile and cause muscle atrophy. Therefore, it is urgent to propose a lower limb protector that can prevent muscle atrophy, so as to protect the lower limb from secondary injury, and at the same time, Prevent and delay lower limb muscle atrophy.

SUMMARY OF THE INVENTION

Based on this, the purpose of the present invention is to provide a lower limb supporter to solve at least one technical problem in the background art.

A lower limb supporter according to an embodiment of the present invention includes a thigh support that can be wrapped around the thigh and a calf support that can be wrapped around the calf. The thigh support is movably connected to the calf support, and also includes an airbag assembly. , the airbag assembly includes an airbag cushion arranged on the inner wall of the calf bracket, an airbag ring that can be sleeved on the thigh, and a catheter assembly connecting the airbag cushion and the airbag ring, and the airbag cushion is pre-filled with gas , the catheter assembly is provided with an electric control assembly that can control the gas in the airbag cushion to be inflated into the airbag ring or control the gas to flow back into the airbag cushion.

Further, it also includes a blood pressure monitoring device, the blood pressure monitoring device is used to monitor the lower extremity venous blood pressure, and the electronic control component controls the gas in the airbag cushion to fill the airbag according to the lower extremity venous blood pressure monitored by the blood pressure monitoring device Loop or control gas backflow into the airbag cushion.

Further, the airbag cushion is provided with several airbag chambers spaced in sequence along the axial direction of the calf support, the several airbag chambers are connected in sequence from the lower end to the upper end of the airbag cushion, and the catheter assembly and the airbag are connected in sequence. The airbag chambers at the lowermost end of the pad communicate with each other.

Further, the volume of the airbag chamber gradually decreases from the lower end to the upper end of the airbag cushion.

Further, the outer ring of the airbag ring is provided with elastic rubber bands, and at least one of the airbag chambers is provided with an air pressure sensor, and the air pressure sensor is electrically connected to a controller, and the controller is used to trigger the calf according to the air pressure sensed by the air pressure sensor. Muscle atrophy warning.

Further, a connecting arm extends outward from the elastic rubber band, the end of the connecting arm is connected to a tension sensor, and the tension sensor is electrically connected to a controller, and the controller is used for triggering according to the tension sensed by the tension sensor. Thigh muscle atrophy warning.

Further, the tension sensor is arranged on the outer wall of the thigh support, and the thigh support is provided with a through hole through which the connecting arm passes.

Further, the catheter assembly includes a main trachea and two bronchi connected to one end of the main trachea, and the other end of the main trachea is connected to the balloon cushion;

The electronic control assembly includes an air pump and a solenoid valve, one of the two bronchi is provided with the air pump, and the other is provided with the solenoid valve.

Further, an outer wall of at least one of the thigh support and the calf support is provided with a magnetic attraction member, and the magnetic attraction member is used for magnetically attracting the air pump and/or the solenoid valve.

Further, the other end of the main trachea passes through the lower leg bracket from the outer wall of the lower leg bracket and is connected to the airbag cushion.

The beneficial effects of the present invention are as follows: by setting the airbag ring that can be sleeved on the thigh, and controlling the inflation or deflation of the airbag ring through the electronic control component, it blocks and releases the vein of the thigh, so as to pass the blood flow blocking technology To prevent and delay lower extremity muscle atrophy. In addition, when the thigh vein is blocked, the lower limbs, especially the calf, will have a relatively obvious swelling. If the tightness of the cuff of the calf brace is reduced, although this swelling can be alleviated, in the non-blocking state, the The calf bracket is easy to shake or even fall off. Therefore, in the present application, a pre-filled airbag cushion is cleverly arranged on the inner wall of the calf bracket. In the non-blocking state, the calf bracket can be firmly fixed on the On the calf, and in the blocking state, the gas in the airbag cushion is just partially or fully filled into the airbag ring, that is, it acts as the air source of the airbag ring. Swelling.

Description of drawings

1 is a schematic three-dimensional structure diagram of a lower limb supporter in an embodiment of the present invention;

2 is a schematic structural diagram of an airbag chamber in an embodiment of the present invention;

3 is a schematic cross-sectional view along line C-C in FIG. 2;

4 is a schematic structural diagram of an airbag ring in an embodiment of the present invention;

Fig. 5 is the enlarged schematic diagram of A place among Fig. 4;

6 is a schematic three-dimensional structural diagram of a lower limb supporter in another embodiment of the present invention;

FIG. 7 is an enlarged schematic view of B in FIG. 6 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Several embodiments of the invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted 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 similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, 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 invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Please refer to FIG. 1 , which shows a lower limb supporter in the first embodiment of the present invention, including a thigh support 10 that can be wrapped around the thigh and a calf support 20 that can be wrapped around the calf. The thigh support 10 and the calf The bracket 20 is movably connected. In addition, the lower limb supporter also includes an airbag assembly 30 .

The airbag assembly 30 includes an airbag cushion 31 arranged on the inner wall of the calf support 20, an airbag ring 32 that can be sleeved on the thigh, and a conduit assembly 33 connecting the airbag cushion 31 and the airbag ring 32. The airbag cushion 31 is pre-filled with gas. The catheter assembly 33 is provided with an electric control assembly 34 that can control the gas in the airbag cushion 31 to be inflated into the airbag ring 32 or control the gas to flow back into the airbag cushion 31 .

Specifically, the catheter assembly 33 includes a main trachea 331 and two bronchi 332 connected to one end of the main trachea 331 , and the other end of the main trachea 331 is connected to the balloon cushion 31 . The electronic control assembly 34 includes an air pump 341 and a solenoid valve 342 . One of the two bronchi 332 is provided with an air pump 341 and the other is provided with a solenoid valve 342 . When the air pump 341 activates the solenoid valve 342 to close, the air in the airbag cushion 31 is filled into the airbag ring 32 through the main trachea 331 and the bronchus where the air pump 341 is located. Blocking is performed to limit the return of venous blood and prevent and delay muscle atrophy of the lower limbs; when the air pump 341 closes the solenoid valve 342 and opens, the gas in the airbag ring 32 flows back into the airbag cushion 31, and the airbag ring 32 releases the thigh vein. In a specific implementation, the air pump 341 is preferably a one-way pump, that is, after the air pump 341 is started, the air flow can only flow to the airbag ring 32, and the air pump 341 will block the air flow when it is turned off. At the same time, the solenoid valve 342 is preferably a one-way valve, that is, after the solenoid valve 342 is activated, the airflow can only flow out of the airbag ring 32, and the solenoid valve 342 will block the airflow when it is closed. In addition, the opening and closing of the air pump 341 and the electromagnetic valve 342 can be controlled by the manual switches provided on the air pump 341 and the electromagnetic valve 342, or the lower limb supporter also includes a controller (not shown) and a human-computer interaction module (Fig. (not shown), the controller is respectively connected to the air pump 341, the solenoid valve 342 and the human-computer interaction module for communication and connection. The connection method can be a wired connection method such as USB or a wireless connection method such as Bluetooth and WiFi. The human-computer interaction module is, for example, a touch screen. Or interactive buttons, and even the air pump 341 and the solenoid valve 342 can be remotely controlled through a terminal such as a mobile phone. The machine interaction module is used to turn on or off the air pump 341 and the solenoid valve 342. In some optional embodiments, the human-computer interaction module and the controller may be arranged on the outer wall of the upper end of the thigh support.

It should be noted that, in order to prevent the catheter assembly 33 from restricting the wearing of the lower extremity protective gear, the catheter assembly 33 should be appropriately lengthened. At the same time, since the electric control assembly 34 is provided on the catheter assembly 33, if the catheter assembly 33 is too long, the catheter The assembly 33 is easy to shake or pull, so in some cases of this embodiment, a magnetic attraction member 40 may also be provided on the outer wall of at least one of the thigh support 10 and the calf support 20, and the magnetic attraction member is used for the magnetic suction pump 341 And/or the solenoid valve 342, in this embodiment, the magnetic attraction piece 40 is specifically embedded in the outer wall of the thigh support 10, and the magnetic attraction piece 40 is, for example, a magnet. Since the casings of the air pump 341 and the solenoid valve 342 are mostly made of metal, Therefore, the air pump 341 and the solenoid valve 342 can be magnetically attracted to the magnet, so as to better fix the catheter assembly 33 . In addition, the other end of the main trachea 331 preferably penetrates the calf bracket 20 from the outer wall of the calf bracket 20 and is connected to the airbag cushion 31 to prevent the main trachea 331 from affecting the wearing of the calf bracket 20 .

Specifically, one side of the thigh support 10 and the calf support 20 is provided with an opening, so as to be wrapped around the thigh or the calf through the opening. The shapes of the thigh brace 10 and the calf brace 20 are adapted to the shapes of the thigh and the calf, respectively, and the thigh brace 10 and the calf brace 20 have certain elasticity. When wearing, first put the airbag ring 32 into the corresponding part of the thigh, and then open the thigh bracket 10 and the calf bracket 20 through the opening, so as to wrap the thigh bracket 10 and the calf bracket 20 on the thigh or calf respectively. Then turn on the air pump and close the solenoid valve to inflate the airbag ring, control the inflation time to make the airbag ring fully inflated to block the thigh vein, and close the air pump after the inflation time is reached. After blocking for a certain period of time (can be set, such as 20 minutes), open the solenoid valve to deflate the airbag ring to avoid ischemic necrosis of the lower extremities caused by long-term blocking. After a period of deflation (can be set, such as 10 minutes), The above operations are repeated to block the thigh vein again, so that the blood flow blocking technique is repeatedly used to prevent and delay the muscle atrophy of the lower extremity. The thigh support 10 and the calf support 20 are connected by hinges, and a movable gap is reserved between the thigh support 10 and the calf support 20 , so that there is a certain relative free space between the thigh support 10 and the calf support 20 .

To sum up, the lower limb supporter in this embodiment is provided with an airbag ring that can be sleeved on the thigh, and the airbag ring is controlled to inflate or deflate through the electronic control component, so that it blocks and releases the thigh vein, so as to pass through the thigh vein. Blood flow blocking technology to prevent and delay muscle atrophy in the lower extremities. In addition, when the thigh vein is blocked, the lower limbs, especially the calf, will have a relatively obvious swelling. If the tightness of the cuff of the calf brace is reduced, although this swelling can be alleviated, in the non-blocking state, the The calf bracket is easy to shake or even fall off. Therefore, in the present application, a pre-filled airbag cushion is cleverly arranged on the inner wall of the calf bracket. In the non-blocking state, the calf bracket can be firmly fixed on the On the calf, and in the blocking state, the gas in the airbag cushion is just partially or fully filled into the airbag ring, that is, it acts as the air source of the airbag ring. Swelling.

Embodiment 2

The second embodiment of the present invention also provides a lower limb supporter. The lower limb supporter in this embodiment is different from the lower limb supporter in the first embodiment in that:

Since the above-mentioned first embodiment uses the blocking time to control the deflation of the airbag ring, but the influence of the blocking time on the lower extremities is also different due to the differences in the blood and other factors of different patients. If the fixed blocking time is uniformly used, it may cause Some patients have insufficient blocking effect or cause necrosis in some patients. Therefore, in order to solve this technical problem in this embodiment, the lower limb supporter also includes a blood pressure monitoring device (not shown in the figure). The blood pressure monitoring device is used to monitor the venous blood pressure of the lower extremity. The control component 34 controls the gas in the airbag cushion 31 to be inflated into the airbag ring 32 or controls the gas to flow back into the airbag cushion 31 according to the lower extremity venous blood pressure monitored by the blood pressure monitoring device.

Specifically, the blood pressure monitoring device is also connected in communication with the controller, and reports the monitored lower extremity venous blood pressure to the controller. When the lower extremity venous blood pressure reaches the set threshold, the controller controls the opening and closing of the electronic control component 34, so as to monitor the femoral vein blood pressure. Blocking or releasing, because the blocking time is controlled according to the patient's own lower extremity venous blood pressure, so there will be no insufficient blocking effect or necrosis.

More specifically, the blood pressure monitoring device is an electronic sphygmomanometer, such as a wrist-type electronic sphygmomanometer or an arm-type electronic sphygmomanometer, preferably an arm-type electronic sphygmomanometer, wherein the cuff of the arm-type electronic sphygmomanometer can be bound to the air bag. Before the loop 32, it can also be tied after the airbag loop 32. When the solution before the airbag loop 32 is selected, the lower edge of the cuff is wrapped around 3 to 5 centimeters above the socket. After the thigh vein is blocked, the venous blood pressure detected by the electronic sphygmomanometer will continue to rise. When the set threshold is exceeded, the controller controls the solenoid valve to open and release. When the venous blood pressure slowly returns to normal, it controls the air pump to inflate. , continue with venous occlusion. When the option of tying behind the airbag ring 32 is selected, the cuff can be wrapped around 3 to 5 cm near the groin for a week. After the airbag ring 32 blocks the thigh vein, the venous blood pressure detected by the electronic sphygmomanometer will continue to When it is lower than the set threshold, the controller controls the solenoid valve to open and release, and when the venous blood pressure slowly returns to normal, it controls the air pump to inflate, and continues to block the vein.

Embodiment 3

Please refer to FIG. 2-FIG. 3, which shows the lower limb supporter in the third embodiment of the present invention. The difference between the lower limb supporter in this embodiment and the lower limb supporter in the first embodiment is:

The airbag cushion 31 is provided with a plurality of airbag chambers 311 spaced in sequence along the axial direction of the calf bracket 20 . The plurality of airbag chambers 311 are sequentially connected from the lower end to the upper end of the airbag cushion 31 , and the main air pipe 331 communicates with the airbag chamber 311 at the lowermost end of the airbag cushion 31 The advantage of the airbag chamber 311 in this layout is that when inflating the airbag ring 32, the gas in the airbag chamber 311 at the lower end is pumped first, and then upwards in turn to form a gradual release from bottom to top, which is related to the blocking of blood flow. The resulting swelling changes correspondingly, and the feeling of comfort is stronger; when the airbag ring 32 is deflated, the gas is first filled into the airbag chamber 311 at the lower end, and then goes up in sequence, forming a gradual extrusion from bottom to top, forming a kind of from the bottom to the top. The feeling of pushing from the bottom to the top can have a certain boosting effect on the previously blocked venous blood, so that the previously blocked venous blood can flow back more quickly and greatly reduce the occurrence of lower extremity necrosis.

Further, the volume of the airbag chamber 311 gradually decreases from the lower end to the upper end of the airbag cushion 31 . Specifically, as shown in FIG. 3 , in the inflated state, the side wall of the airbag chamber 311 is inclined inward toward the calf side, that is, the airbag The cross section of the chamber 311 is small and the lower part is larger. The airbag chamber 311 of this shape fits the shape of the calf in the inflated state, and provides a more fitting squeezing feeling to the calf. It can form a stronger sense of pressure and enhance the boosting effect of venous blood.

In some optional embodiments of this embodiment, please refer to FIG. 4 to FIG. 7 , in order to be able to give an early warning to the muscle atrophy of the lower limbs, the lower limb protective gear may further include the following technical features:

The outer ring of the airbag ring 32 is provided with an elastic rubber band 321, and an air pressure sensor 35 is arranged in at least one airbag chamber 311. The air pressure sensor 35 is electrically connected to the controller by wired or wireless communication, and the controller is used to trigger calf muscle atrophy according to the air pressure sensed by the air pressure sensor. Warning. Specifically, after the solenoid valve 342 is opened, the elastic rubber band 321 contracts, which can quickly and almost completely discharge the gas in the airbag ring 32, and restore the initial state of the airbag ring 32, which is equivalent to refilling all the previously charged gas. To the airbag chamber 311, the gas volume of the airbag chamber 311 is equal to the gas volume in the initial state, and the pressure change of the airbag chamber 311 is basically only related to the extrusion of the calf. If the calf muscle shrinks, it will affect the airbag chamber. The extrusion of 311 will decrease, and the pressure of the airbag chamber 311 collected by the air pressure sensor 35 will decrease. At this time, the controller can predict that the current calf muscle may atrophy. Therefore, in this embodiment, the elastic rubber band 321 is provided to ensure the airbag chamber 311 All the exhausted gas can flow back, and then the air pressure sensor 35 is set to detect the air pressure change of the airbag chamber 311, so that the atrophy of the calf muscle can be automatically detected. In the specific implementation, the air pressure sensor 35 can be set in the air bag chamber 311 at the corresponding position of the calf muscle, and the air pressure sensor 35 can also be installed in each air bag chamber 311, so that the air pressure changes in different parts of the calf can also be detected. Muscle atrophy.

At the same time, a connecting arm 322 extends outward from the elastic rubber band 321. The end of the connecting arm 322 is connected to a tension sensor 36. The tension sensor 36 is electrically connected to the controller, and the controller is used to trigger the thigh muscle atrophy warning according to the tension sensed by the tension sensor 36. Specifically, when the thigh muscles atrophy, after the airbag ring 32 is deflated, the elastic rubber band 321 will contract smaller, and the pulling force acting on the tension sensor 36 will be larger. At this time, the controller can predict that the current thigh Muscles may atrophy, so in this embodiment, the connecting arm 322 is extended from the elastic rubber band 321, and the connecting arm 322 is connected to the tension sensor 36, and then based on the contractility principle of the elastic rubber band 321, it can automatically detect the muscle atrophy of the thigh. Happening.

Specifically, the tension sensor 36 may be provided on the outer wall of the thigh support 10 , the thigh support 10 is provided with a through hole 11 for the connecting arm 322 to pass through, and the end of the connecting arm 322 is provided with a pull ring 323 for easily attaching the tension sensor 36 . When in use, first put the airbag ring 32 into the thigh, at this time, it is necessary to adjust the position of the airbag ring 32, and then open the thigh support 10 and the calf support 20 through the opening, so as to hug the thigh support 10 and the calf support 20 respectively. On the thigh or calf, the connecting arm 322 of the elastic elastic band 321 is passed through the through hole and the tension sensor 36 is hooked.

It should be noted that the above embodiments and their features can be combined arbitrarily without conflict, and the new technical solutions obtained by the combination still fall within the protection scope of the present invention. For example, all the above embodiments and their features can be combined together to form a new technical solution including all the above technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (8)

1. a lower limb supporter, comprising a thigh support that can be wrapped around a thigh and a calf support that can be wrapped around a calf, the thigh support is movably connected with the calf support, it is characterized in that, also comprises an air bag assembly, The airbag assembly includes an airbag cushion arranged on the inner wall of the calf support, an airbag ring that can be sleeved on the thigh, and a catheter assembly connecting the airbag cushion and the airbag ring, and the airbag cushion is pre-filled with gas, The catheter assembly is provided with an electric control assembly that can control the gas in the airbag cushion to be inflated into the airbag ring or control the gas to flow back into the airbag cushion; The airbag cushion is provided with several airbag chambers spaced in sequence along the axial direction of the calf support, the several airbag chambers are sequentially connected from the lower end to the upper end of the airbag cushion, and the conduit assembly and the lowermost end of the airbag cushion The airbag chambers are connected to each other, and the volume of the airbag chamber gradually decreases from the lower end to the upper end of the airbag cushion. 2 . The lower extremity supporter according to claim 1 , further comprising a blood pressure monitoring device, the blood pressure monitoring device is used to monitor the blood pressure of the lower extremity veins, and the electronic control assembly is based on the lower extremity venous blood pressure monitored by the blood pressure monitoring device. 3 . The blood pressure controls the gas in the airbag cushion to be inflated into the airbag circle or controls the gas to flow back into the airbag cushion. 3 . The lower limb supporter according to claim 1 , wherein an elastic rubber band is provided on the outer ring of the airbag ring, and an air pressure sensor is provided in at least one of the airbag chambers, and the air pressure sensor is electrically connected to the controller, so that the air pressure sensor is electrically connected to the controller. 4 . The controller is used for triggering an early warning of calf muscle atrophy according to the air pressure sensed by the air pressure sensor. 4 . The lower extremity supporter according to claim 3 , wherein a connecting arm extends outward from the elastic rubber band, the end of the connecting arm is connected to a tension sensor, and the tension sensor is electrically connected to the controller, 5 . The controller is configured to trigger a thigh muscle atrophy early warning according to the pulling force sensed by the pulling force sensor. 5 . The lower limb supporter according to claim 4 , wherein the tension sensor is provided on the outer wall of the thigh support, and the thigh support is provided with a through hole through which the connecting arm passes. 6 . 6. The lower limb supporter according to claim 1, wherein the catheter assembly comprises a main trachea and two bronchi connected to one end of the main trachea, and the other end of the main trachea is connected to the airbag cushion; The electronic control assembly includes an air pump and a solenoid valve, one of the two bronchi is provided with the air pump, and the other is provided with the solenoid valve. 7 . The lower limb supporter according to claim 6 , wherein an outer wall of at least one of the thigh support and the calf support is provided with a magnetic attraction, and the magnetic attraction is used to magnetically attract the air pump. 8 . and/or the solenoid valve. 8 . The lower limb supporter according to claim 6 , wherein the other end of the main trachea penetrates through the calf brace from the outer wall of the calf brace and is connected to the airbag cushion. 9 .

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