CN219700382U

CN219700382U - Limb fixing equipment

Info

Publication number: CN219700382U
Application number: CN202222727659.XU
Authority: CN
Inventors: 于洪宇; 谷芳秋; 栗新
Original assignee: Jinzhou Medical University
Current assignee: Jinzhou Medical University
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-09-19
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to limb fixing equipment, which comprises a limiting mechanism, wherein the limiting mechanism comprises an air bag, the air bag comprises a patient limb so as to fix the patient limb, a safety component is connected to the air bag through a balance pipe, the safety component comprises a mounting shell, the right side of the mounting shell is connected with an exhaust pipe in a communicated mode, a limiting ring is fixedly connected in the exhaust pipe, the right side of the limiting ring is provided with a sealing plate, the right end of the sealing plate is fixedly connected with a compression spring I which is horizontally arranged, the air pressure value in the air bag can be controlled by adjusting the thrust exerted on the sealing plate by the compression spring I in the actual use process, the specific air bag and the air pressure value in the mounting shell are larger than the atmospheric pressure, so that an air pressure difference is exerted on the sealing plate to the right side, when the sealing plate receives the thrust to the right side which is larger than the thrust of the compression spring I, the sealing plate is not connected with the limiting ring in a sealing mode, air is exchanged with the outside at the moment, the air bag is decompressed in the air bag, and the safety is ensured.

Description

Limb fixing equipment

Technical Field

The utility model relates to the technical field of medical equipment, in particular to limb fixing equipment.

Background

Pediatric is a comprehensive medical science for comprehensively researching physical and mental development, health care and disease prevention and treatment of pediatric patients, and in the actual treatment or nursing process of pediatric patients, the pediatric patients are relatively weak in autonomous control capacity due to relatively weak patient ages, and the pediatric patients often need to be limited on limbs of the pediatric patients, so that the pediatric patients are guaranteed not to influence the operation of medical staff in the treatment or nursing process.

For pediatric patients, the skin and the bones of the pediatric patients are fragile due to the fact that the pediatric patients are relatively weak in development, and the pediatric patients are poor in self-control capability and high in adverse mental strength, so that the limb fixing mechanism for pediatric patients is particularly careful in fixing the limb of the pediatric patients, and damage to the pediatric patients is avoided.

The existing limb fixing mechanism for pediatrics generally adopts an air bag to limit the patient limb, the air bag is not a hard connecting member while the patient limb can be limited, the adverse psychological state of a patient is not stimulated, when the air bag is inflated by the device in the prior art, whether the air filling quantity in the air bag is matched with the patient limb or not is usually determined by adopting an electronic control or medical staff experience judging mode, whether the pressing force exerted on the patient limb by the air bag is proper or not is judged at the moment, but the complete safety cannot be ensured in the electronic control or experience judging mode, and phenomena such as experience misjudgment, damage of electronic control elements and the like possibly exist in actual traditional Chinese medicine nursing staff.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides limb fixing equipment, which has the advantage of fully ensuring that the filling gas amount in the air bag meets the actual use requirement, and solves the defect that the air bag possibly damages the patient limb due to the excessive filling gas amount in the air bag in the actual use process of the prior art device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a limbs fixed equipment, includes the fixed establishment who is used for dismantling the connection with the sick bed, be provided with horizontal position adjustment mechanism on the fixed establishment, horizontal position adjustment mechanism keeps away from fixed establishment one end fixedly connected with stop gear relatively, stop gear includes upper limiting plate and lower limiting plate that sets up from top to bottom, upper limiting plate and lower limiting plate inboard fixedly connected with gasbag, it has intake pipe, balanced pipe to lead to on the gasbag, and wherein intake pipe keeps away from gasbag one end relatively and has the piece of inflating to lead to, and balanced pipe keeps away from gasbag one end relatively and has the safety component to lead to, the safety component includes the installation casing, installation casing one side is led to and is connected with an blast pipe, fixedly connected with spacing ring in the blast pipe, spacing ring is kept away from installation casing one side relatively and is provided with a closing plate, compression spring I that spacing ring one end fixedly connected with level set up, compression spring I other end and blast pipe swing joint, compression spring I are in compression state when not influenced by external force.

Preferably, the compression spring I is kept away from spacing ring one end fixedly connected with regulation board relatively, the regulation board outer lane is provided with the external screw thread, be provided with the internal screw thread to the external screw thread in the blast pipe to the internal screw thread on the blast pipe and the external screw thread looks adaptation of regulation board outer lane, from left to right on the regulating plate run through and are provided with the exhaust hole, the regulation board is kept away from spacing ring one end fixedly connected with dwang relatively, the dwang is kept away from spacing ring one end relatively and is extended to the blast pipe outside.

Preferably, scale marks are arranged on the rotating rod, and a pointer is arranged at one end, relatively far away from the installation shell, of the exhaust pipe for the scale marks.

Preferably, the lower limiting plate is fixedly connected with the horizontal position adjusting mechanism, one end, relatively close to the horizontal position adjusting mechanism, of the lower limiting plate is rotationally connected with the upper limiting plate through a hinge, a limiting member is arranged between the upper limiting plate and the lower limiting plate, and the limiting member is positioned at one end, relatively far away from the hinge, of the upper limiting plate and the lower limiting plate.

Preferably, the spacing component includes the locating lever with lower limiting plate up end fixed connection, be provided with the constant head tank to the locating lever in the last limiting plate, constant head tank one side is provided with the mounting groove, the level is provided with a compression spring II in the mounting groove, compression spring II is close to constant head tank one end fixedly connected with fixed block relatively, be provided with the fixed slot to the fixed block on the locating lever, the fixed block is whole half fusiform structure, and the great one end of fixed block diameter and compression spring II fixed connection.

Preferably, the longitudinal sections of the upper limiting plate and the lower limiting plate are semicircular.

Preferably, the horizontal position adjusting mechanism comprises a plurality of sleeves, the sleeves are nested mutually, and a resistance pad is arranged between two adjacent sleeves.

Preferably, a height adjusting mechanism is arranged between the horizontal position adjusting mechanism and the fixing mechanism, the height adjusting mechanism comprises an internal thread pipe, and a screw rod is screwed in the internal thread pipe.

Preferably, a height compensation member is arranged between the height adjusting mechanism and the horizontal position adjusting mechanism.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the air pressure threshold value in the air bag can be controlled by changing the left thrust force exerted on the regulating plate by the compression spring I, when the air pressure value in the air bag exceeds a preset value, the air bag can automatically release pressure, so that the pressure exerted on the limb of a patient by the expansion of the air bag is ensured to meet the actual use requirement, the uncomfortable feeling of the patient is reduced, meanwhile, the safety component is a full-mechanical component, and an electronic control element is not required, so that the working reliability of the safety component is ensured to the greatest extent.

The compression spring II in the limiting component is matched with the fixed block, and the arc-shaped structure of the fixed block is utilized to enable the force exerted on the patient limb by the air bag to have a maximum threshold value (when the maximum threshold value is exceeded, the upper limiting plate can rotate relative to the lower limiting plate so as to avoid overlarge pressure value), so that the device can still not damage the patient limb when the safety component has a problem.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a partially enlarged schematic view of the point a in fig. 1.

Fig. 3 is a schematic view of the overall structure of the safety member of the present utility model.

In the figure: 1. a height adjusting mechanism; 101. a screw; 102. an internally threaded tube; 2. a height compensator; 3. a horizontal position adjusting mechanism; 301. a resistance pad; 302. a sleeve; 4. a limiting mechanism; 401. an air inlet pipe; 402. a lower limit plate; 403. an air bag; 404. an inflatable member; 405. an upper limit plate; 406. a balance tube; 407. a safety member; 4071. a mounting shell; 4072. a limiting ring; 4073. a sealing plate; 4074. compression spring I; 4075. an adjusting plate; 4076. a rotating lever; 4077. scale marks; 4078. a pointer; 408. a limiting member; 4081. a fixing groove; 4082. a fixed block; 4083. compression spring II; 4084. a mounting groove; 409. a positioning rod; 410. and a positioning groove.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, a limb fixing device includes a fixing mechanism for detachably connecting with a hospital bed, in practice, the fixing mechanism generally includes a U-shaped frame, the U-shaped frame is clamped on the edge of the hospital bed by using a gap at the edge of the hospital bed, further the U-shaped frame is further screwed with a screw, and the pressing force applied on the edge of the hospital bed by the screw is changed by rotating the screw to further limit the U-shaped frame, so that the U-shaped frame is ensured not to move freely.

The fixing mechanism is provided with a horizontal position adjusting mechanism 3, one end, far away from the fixing mechanism, of the horizontal position adjusting mechanism 3 is fixedly connected with a limiting mechanism 4, the relative distance between the fixing mechanism and the limb of a patient is adjusted through the horizontal position adjusting mechanism in the actual use process, the limiting mechanism 4 is limited by the hard connection process of the horizontal position adjusting mechanism 3, and when the limb of the patient is limited by the limiting mechanism 4, the limiting mechanism 4 cannot move at will, so that the limb of the patient cannot move at will.

The horizontal position adjusting mechanism 3 comprises a plurality of sleeves 302, the sleeves 302 are nested with each other, so that the purpose of changing the relative length of the horizontal position adjusting mechanism 3 can be achieved by changing the relative distance between two adjacent sleeves 302, and specifically, two sleeves 302 at two ends are far away from each other and are respectively connected with the fixing mechanism and the limiting mechanism 4.

The resistance pad 301 is arranged between two adjacent sleeves 302, the resistance felt during the relative sliding between the two adjacent sleeves 302 can be changed through the resistance pad 301, the relative position between the two adjacent sleeves 302, namely the whole length of the horizontal position adjusting mechanism 3, can be fixed in a mode of increasing the resistance, so that the position of the limiting mechanism 4 is not changed randomly, the existence of the resistance pad 301 can be fully used for pediatric patients, the resistance value of the resistance pad 301 can be changed conveniently for medical staff, the resistance of the resistance pad 301 can force the pediatric patients with weaker physical strength to change the relative position between the two adjacent sleeves 302, the resistance pad 301 can be made of rubber materials, such as silicone rubber materials, and the resistance pad 301 is wear-resistant, deformable and resistant to atmospheric aging.

The height adjusting mechanism 1 is arranged between the horizontal position adjusting mechanism 3 and the fixing mechanism, and the relative height of the horizontal position adjusting mechanism 3, namely the limiting mechanism 4, can be changed through the height adjusting mechanism 1, so that the relative height of the contact position of the patient limb and the limiting mechanism 4 is changed.

The height adjusting mechanism 1 comprises an inner threaded pipe 102, a screw rod 101 is screwed into the inner threaded pipe 102, when the screw rod 101 cannot rotate, the inner threaded pipe 102 can change the overall relative height of the height adjusting mechanism 1 through threaded connection, the screw rod 101 can be fixedly connected with the upper end face of the U-shaped frame, the inner threaded pipe 102 is sleeved at the upper end of the screw rod 101, so that the relative height of the inner threaded pipe 102 can be changed, the minimum relative height of the lower end face of the inner threaded pipe 102 can be flush with the relative height of the upper end face of the U-shaped frame, and the length change range of the inner threaded pipe 102 is enabled to accord with the characteristic that the length of limbs of a pediatric patient is short.

The height compensation piece 2 is arranged between the height adjusting mechanism 1 and the horizontal position adjusting mechanism 3, the specific height compensation piece 2 can comprise a limiting ring 4072 fixedly connected with the lower end face of the internal thread pipe 102, a connecting ring sleeved outside the internal thread pipe 102 limits the relative height of the connecting ring in practice through the limiting ring 4072, the horizontal position adjusting mechanism 3 can be directly placed on a sickbed when the lower end face of the internal thread pipe 102 is level with the upper end face of the mounting mechanism through the height compensation piece 2, and therefore the device can be matched with the characteristic of short limb length of a pediatric patient.

The limiting member 408 comprises an upper limiting plate 405 and a lower limiting plate 402 which are arranged up and down, and in practice, the upper limiting plate 405 and the lower limiting plate 402 are mutually matched to limit the patient limb in the upper direction and the lower direction, so that the patient limb is ensured not to move at will.

The upper limiting plate 405 and the lower limiting plate 402 are fixedly connected with the air bag 403, in practice, the air bag 403 is inflated by filling air into the air bag 403, when the air bag 403 is inflated, the volume of the air bag is enlarged, the space inside the upper limiting plate 405 and the space inside the lower limiting plate 402 are extruded, the space between the upper limiting plate 405 and the lower limiting plate 402 is matched with the diameter of a patient limb, and the air bag 403 is utilized to limit and fix the patient limb.

The air bag 403 is connected with the air inlet pipe 401, one end, far away from the air bag 403, of the air inlet pipe 401 is connected with the air charging piece 404, air can be filled into the air bag 403 through the air charging piece 404, the expansion coefficient of the air bag 403 is guaranteed to meet the actual use requirement, and particularly, the air charging piece 404 can be in various forms such as an air pump and an air cylinder.

The airbag 403 is further connected with a safety member 407 through a balance pipe 406, wherein the balance pipe 406 is used for communicating the airbag 403 with the safety member 407, and the mounting member is used for ensuring the air pressure value in the airbag 403, that is, the expansion coefficient of the airbag 403 can meet the actual use requirement, and the airbag can not cause excessive compression on the patient limb.

The safety member 407 comprises a mounting housing 4071, wherein the inside of the mounting housing 4071 is of a hollow structure, and one end of the mounting housing 4071, which is relatively close to the air bag 403, is communicated with the air bag 403 through a balance pipe 406.

One side of the mounting shell 4071 is connected with an exhaust pipe, a limiting ring 4072 is fixedly connected in the exhaust pipe, a through hole is formed in the center of the limiting ring 4072 in a penetrating manner from left to right, and when shielding does not exist on two sides of the limiting ring 4072, gas in the air bag 403 can flow into the outside of the exhaust pipe from the inside of the limiting ring 4072 through the mounting shell 4071.

The sealing plate 4073 is arranged on one side, far away from the mounting shell 4071, of the limiting ring 4072, when the sealing ring is tightly attached to the limiting ring 4072, the sealing plate 4073 can form shielding on one side, far away from the balance pipe 406, of the limiting ring 4072, and further the mounting shell 4071, the balance pipe 406 and the air bag 403 are in a sealing state, air in the air bag 403 cannot be discharged from the limiting ring 4072, a sealing pad can be arranged on one side, close to the limiting ring 4072, of the sealing ring relatively, sealing connection between the sealing plate 4073 and the limiting ring 4072 is achieved through the sealing pad, the sealing pad can be made of rubber materials, and further the sealing pad is made of silicone rubber materials, so that the air cannot overflow when the sealing pad is tightly attached to the limiting ring 4072 due to the deformable property of rubber.

The sealing plate 4073 is relatively far away from the compression spring I4074 that a level set up of fixed connection of spacing ring 4072 one end, compression spring I4074 is relatively far away from spacing ring 4072 one end fixedly connected with an adjusting plate 4075, when compression spring I4074 does not receive external force influence, compression spring I4074 is in the compression state, namely compression spring can exert a horizontal thrust directional spacing ring 4072 on sealing plate 4073 all the time, thereby make sealing plate 4073 closely laminate with spacing ring 4072, in the in-service use because the air pressure value in gasbag 403 is greater than external air pressure value, namely the air pressure value on the left side of sealing plate 4073 is greater than the air pressure value on the right side of sealing plate 4073, namely will receive a horizontal thrust directional adjusting plate 4075 on sealing plate 4073, in practice when the air pressure in gasbag 403 continuously rises, when the air pressure value is crossed to the safety air pressure, the thrust that the left side of sealing plate 4073 will be greater than compression spring exerts on the thrust on the right side of sealing plate 4073, the sealing plate 4073 will move rightwards and break away from the closely laminating state with spacing ring 4072, can guarantee that the air pressure value in the normal range is carried out to gasbag 403.

One end, far away from the limiting ring 4072, of the compression spring I4074 is fixedly connected with an adjusting plate 4075, the adjusting plate 4075 is in sliding connection with the exhaust pipe, and moves linearly left and right relative to the exhaust pipe, in practice, the thrust applied by the compression spring on the right side of the sealing plate 4073 can be changed by changing the relative position of the price adjusting plate, namely, the limit value of the thrust on the left side of the sealing plate 4073 for pushing the sealing plate 4073 to move right is changed, namely, the safety range of the air pressure value in the air bag 403 is changed.

The adjusting plate 4075 outer ring is provided with the external screw thread, be provided with the internal screw thread to the external screw thread to the internal screw thread looks adaptation on the blast pipe and the adjusting plate 4075 outer ring, adjusting plate 4075 and blast pipe spiro union promptly, in practice the user can manual restriction installation casing 4071 do not take place to rotate, rotates adjusting plate 4075 this moment and can change adjusting plate 4075 relative position.

One end of the adjusting plate 4075, which is relatively far away from the limiting ring 4072, is fixedly connected with a rotating rod 4076, so that a user can rotate the rotating rod 4076 to drive the adjusting plate 4075 to rotate so as to change the relative position of the adjusting plate 4075.

The end of the rotating rod 4076, which is relatively far away from the limiting ring 4072, extends out of the exhaust pipe, so that a user can conveniently rotate the rotating rod 4076, and the portion, located outside the mounting shell 4071, of the rotating rod 4076 can be fixedly connected with a rotating member, so that the user can conveniently rotate the rotating rod 4076, and the rotating member can adopt various forms such as a hand wheel and the rotating rod 4076.

The adjusting plate 4075 is provided with an exhaust hole from left to right, and when the sealing plate 4073 is not tightly attached to the limiting ring 4072, the air in the air bag 403 can be rapidly exhausted through the exhaust hole, so that the influence of threaded connection on the air exhaust efficiency is avoided.

Be provided with scale mark 4077 on dwang 4076, blast pipe is kept away from installation casing 4071 one end relatively and is provided with pointer 4078 to scale mark 4077, can be to the dwang 4076 be located the outside part of installation casing 4071 through pointer 4078 and scale mark 4077 cooperation, adjusting plate 4075 relative position promptly, the internal air pressure value range of gasbag 403 is spacing, the medical personnel operation of being convenient for and review.

The lower limiting plate 402 is fixedly connected with the horizontal position adjusting mechanism 3, and further, when the horizontal position adjusting mechanism 3 is in contact with the sickbed surface, the lower end surface of the lower limiting plate 402 is also in contact with the sickbed surface, so that the association relationship between the limiting position of the device and the shorter limb of the patient is fully considered.

One end of the lower limiting plate 402, which is relatively close to the horizontal position adjusting mechanism 3, is rotationally connected with the upper limiting plate 405 through a hinge, so that the upper limiting plate 405 and the lower limiting plate 402 are relatively far away from the horizontal position adjusting mechanism 3, namely, relatively close to one side of a patient, can be opened and closed, and the patient limb can be placed between the upper limiting plate 405 and the limiting plate through opening and closing.

The longitudinal section of the upper limiting plate 405 and the lower limiting plate 402 is in a semicircular arc shape, that is, the space between the upper limiting plate 405 and the lower limiting plate 402 can be regarded as circular, so that the space between the upper limiting plate 405 and the lower limiting plate 402 is matched with the shape of the limb of the patient, and the limb of the patient is uniformly stressed.

A limiting member 408 is disposed between the upper limiting plate 405 and the lower limiting plate 402, the limiting member 408 is located at one end of the upper limiting plate 405 and one end of the lower limiting plate 402, which is relatively far away from the hinge, and the upper limiting plate 405 and the lower limiting plate 402 can be limited by the limiting member 408, so that when a patient limb is placed between the upper limiting plate 405 and the lower limiting plate 402, the relative angle between the upper limiting plate 405 and the lower limiting plate 402 can be fixed.

The limiting member 408 comprises a positioning rod 409 fixedly connected with the upper end surface of the lower limiting plate 402, a positioning groove 410 is formed in the upper limiting plate 405 and aimed at the positioning rod 409, and the positioning rod 409 can be embedded into the positioning groove 410, so that the fixed angle between the upper limiting plate 405 and the lower limiting plate 402 is fixed.

The positioning groove 410 one side is provided with mounting groove 4084, the level is provided with a compression spring II 4083 in the mounting groove 4084, compression spring II 4083 is close to positioning groove 410 one end fixedly connected with fixed block 4082 relatively, be provided with fixed slot 4081 to fixed block 4082 on the locating lever 409, can be fixed to the relative angle between upper limiting plate 405 and the lower limiting plate 402 through fixed block 4082 and fixed slot 4081 mutually supporting.

The whole fixed block 4082 is of a semi-fusiform structure, namely, the longitudinal section of the fixed block 4082 is semi-oval, the larger diameter end of the fixed block 4082 is fixedly connected with the compression spring II 4083, so that when the upper limit plate 405 is rotated, the positioning rod 409 is embedded into the positioning groove 410, the arc line on the fixed block 4082 enables the force applied by the positioning rod 409 on the fixed block 4082 to be converted into the thrust in the horizontal direction, the fixed block 4082 can be immersed into the mounting groove 4084 to contact with the limit effect of the fixed block 4082 by the fixed block 4081, and in the practical use process, when the air bag 403 extrudes a patient limb, the reaction force applied by the patient limb on the upper limit plate 405 pushes the upper limit plate 405 to have a trend of rotating relative to the lower limit plate 402, the action force applied by the air bag 403 on the patient limb is always in a safe range by combining the relative position (compression length of the compression spring) of the fixed groove 4081, when the action applied by the air bag 403 on the upper limit plate 405 is larger than a certain threshold value, the fixed block 4082 can be freely matched with the fixed block 4082 in a fixed way, and the fixed block 4082 can be freely rotated relative to the lower limit plate 4082.

Working principle: in the practical use process, the rotating rod 4076 is rotated according to the age, illness state and limb thickness of a patient, the adjusting plate 4075 is driven to do left-right rectilinear motion relative to the exhaust pipe, the compression length of the compression spring I4074 is changed, namely the thrust required by the rightward movement of the sealing plate 4073 is changed, then the device is fixed on the edge of a sickbed through the fixing mechanism, the relative position of the limiting mechanism 4 is matched with the patient through the adjusting mechanism 3 and the height adjusting mechanism 1, finally the upper limiting plate 405 is rotated to enable the positioning rod 409 to be embedded into the positioning groove 410, the air bag 403 is filled with air through the inflating piece 404, the inner side of the air bag 403 is tightly attached to the limb of the patient, and the internal air pressure of the air bag 403 is utilized for fixing the limb of the patient.

In the practical use process, the air pressure inside the air bag 403 is balanced with the mounting shell 4071 through the balance pipe 406, the air pressure values at two sides of the sealing plate 4073 are unbalanced to generate a pressure difference, so that a rightward thrust is applied to the sealing plate 4073, a leftward thrust is applied to the sealing plate 4073 by the compression spring I4074, whether the sealing plate 4073 is in sealing connection with the limiting ring 4072 or not is determined by the thrust values at two sides of the sealing plate 4073, namely whether the air pressure value inside the air bag 403 is influenced or not, meanwhile, the compression spring II 4083 is matched with the fixing block 4082, when the air bag 403 is applied to an excessive pressure value on a patient limb, the fixing block 4082 can overcome the thrust of the compression spring II 4083 to sink into the mounting groove 4084, the limiting effect of the fixing groove 4081 on the fixing block 4082 is released, and the upper limiting plate 405 can rotate freely relative to the lower limiting plate 402.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A limb fixation apparatus comprising a fixation mechanism for detachable connection with a hospital bed, characterized in that: the fixing mechanism is provided with a horizontal position adjusting mechanism (3), and one end, relatively far away from the fixing mechanism, of the horizontal position adjusting mechanism (3) is fixedly connected with a limiting mechanism (4);

the limiting mechanism (4) comprises an upper limiting plate (405) and a lower limiting plate (402) which are arranged up and down, an air bag (403) is fixedly connected to the inner sides of the upper limiting plate (405) and the lower limiting plate (402), an air inlet pipe (401) and a balance pipe (406) are connected to the air bag (403), an inflatable part (404) is connected to one end, far away from the air bag (403), of the air inlet pipe (401), and a safety component (407) is connected to one end, far away from the air bag (403), of the balance pipe (406);

the safety component (407) comprises a mounting shell (4071), one side of the mounting shell (4071) is communicated with an exhaust pipe, a limiting ring (4072) is fixedly connected in the exhaust pipe, one side, far away from the mounting shell (4071), of the limiting ring (4072) is provided with a sealing plate (4073), one end, far away from the limiting ring (4072), of the sealing plate (4073) is fixedly connected with a compression spring I (4074) which is horizontally arranged, and the other end of the compression spring I (4074) is movably connected with the exhaust pipe;

when the compression spring I (4074) is not affected by external force, the compression spring I (4074) is in a compressed state.

2. A limb fixation apparatus according to claim 1, wherein: one end, far away from the limiting ring (4072), of the compression spring I (4074) is fixedly connected with an adjusting plate (4075);

the outer ring of the adjusting plate (4075) is provided with external threads, the exhaust pipe is internally provided with internal threads aiming at the external threads, and the internal threads on the exhaust pipe are matched with the external threads of the outer ring of the adjusting plate (4075);

the adjusting plate (4075) is provided with an exhaust hole in a penetrating way from left to right;

one end, far away from the limiting ring (4072), of the adjusting plate (4075) is fixedly connected with a rotating rod (4076), and one end, far away from the limiting ring (4072), of the rotating rod (4076) extends out of the exhaust pipe.

3. A limb fixation apparatus according to claim 2, wherein: the rotary rod (4076) is provided with scale marks (4077), and one end, far away from the installation shell (4071), of the exhaust pipe is provided with a pointer (4078) aiming at the scale marks (4077).

4. A limb fixation apparatus according to claim 1, wherein: the lower limiting plate (402) is fixedly connected with the horizontal position adjusting mechanism (3), and one end, which is relatively close to the horizontal position adjusting mechanism (3), of the lower limiting plate (402) is rotationally connected with the upper limiting plate (405) through a hinge;

a limiting component (408) is arranged between the upper limiting plate (405) and the lower limiting plate (402), and the limiting component (408) is positioned at one end, far away from the hinge, of the upper limiting plate (405) and the lower limiting plate (402).

5. A limb fixation apparatus according to claim 4, wherein: the limiting member (408) comprises a positioning rod (409) fixedly connected with the upper end surface of the lower limiting plate (402), and a positioning groove (410) is formed in the upper limiting plate (405) aiming at the positioning rod (409);

one side of the positioning groove (410) is provided with a mounting groove (4084), a compression spring II (4083) is horizontally arranged in the mounting groove (4084), one end, relatively close to the positioning groove (410), of the compression spring II (4083) is fixedly connected with a fixed block (4082), and the positioning rod (409) is provided with a fixed groove (4081) aiming at the fixed block (4082);

the whole fixed block (4082) is of a half-fusiform structure, and one end of the fixed block (4082) with a larger diameter is fixedly connected with the compression spring II (4083).

6. A limb fixation apparatus according to claim 1, wherein: longitudinal sections of the upper limit plate (405) and the lower limit plate (402) are semicircular arc shapes.

7. A limb fixation apparatus according to claim 1, wherein: the horizontal position adjusting mechanism (3) comprises a plurality of sleeves (302), wherein the sleeves (302) are nested mutually, and a resistance pad (301) is arranged between every two adjacent sleeves (302).

8. A limb fixation apparatus according to claim 1, wherein: a height adjusting mechanism (1) is arranged between the horizontal position adjusting mechanism (3) and the fixing mechanism;

the height adjusting mechanism (1) comprises an inner threaded pipe (102), and a screw rod (101) is connected in the inner threaded pipe (102) in a threaded mode.

9. A limb fixation apparatus according to claim 8, wherein: a height compensation piece (2) is arranged between the height adjusting mechanism (1) and the horizontal position adjusting mechanism (3).