CN111803251B - Full-open type constant force receiving cavity - Google Patents

Abstract

The invention relates to a fully open constant force receiving cavity, which comprises an outer frame (1), an inner frame (2) arranged inside the outer frame (1), and multiple frames connected with the outer frame (1) and the inner frame (2). The horizontal connecting and fixing components and a plurality of constant force mechanisms (3) arranged on the inner frame (2), the outer frame (1), the inner frame (2) and the transverse connecting and fixing components form a cavity, the outer The frame (1) includes an outer frame base (101) and a plurality of outer frame support bars longitudinally arranged on the outer frame base (101), and the inner frame (2) includes an inner frame base (201) and a plurality of outer frame support bars longitudinally arranged on the inner frame A plurality of inner frame support bars on the base (201), the positions of the inner frame base (201) and the outer frame base (101) are corresponding, and the positions of the outer frame support bars and the inner frame support bars are corresponding. Compared with the prior art, the invention ensures the accuracy of force and motion transmission during use, improves comfort and has controllable functions.

Description

A fully open constant force receiving cavity

technical field

The invention relates to the field of medical rehabilitation equipment, in particular to a fully open constant force socket.

Background technique

According to the results of the sixth national census and the second national sample survey of disabled people, the total number of disabled people in my country is about 85.02 million, including 24.72 million people with physical disabilities, especially those with lower limb amputations. Lower extremity dysfunction severely impedes a person's ability to stand, walk, or run, and is devastating to individuals physically, psychosocially, and economically. Therefore, there is an urgent need to provide an adaptive constant force socket to make up for the patient's inner anxiety and lost limbs, and to help the patient experience a normal life better.

真空悬吊接受腔通过采用真空结构从而使残肢与接受腔的接触界面处于负压状态，可以一定程度上提高悬吊性。但是它不仅要求接受腔为全接触式且有良好的配合，还需要密封的界面；RevoFit^TM接受腔系统是由Click Medical制造，它是一种机械调整式接受腔，分别使用张力表盘和棘轮皮带，允许用户控制接受腔连接的紧密程度。但是，这样的操作也存在很大的缺陷：由于残肢体积的变化，患者需要不断的调整其残肢上的压缩力来相适应。At present, there is no similar constant force socket with controllable functions in the domestic rehabilitation field. Otto bock abroad

The vacuum suspension socket adopts a vacuum structure so that the contact interface between the residual limb and the socket is in a negative pressure state, which can improve the suspension to a certain extent. But it requires not only a full-contact socket with a good fit, but also a sealed interface; the RevoFit ^TM socket system is manufactured by Click Medical and is a mechanically adjustable socket that uses tension dials and ratchet straps, respectively , allowing the user to control the tightness of the socket connection. However, such an operation also has a great disadvantage: due to the change in the volume of the residual limb, the patient needs to constantly adjust the compression force on the residual limb to adapt.

Contents of the invention

The purpose of the present invention is to provide a fully open constant force receiving cavity to solve the above problems, which can ensure the accuracy of force and motion transmission during use, improve the comfort of the patient, and have controllable functions.

The object of the present invention is achieved through the following technical solutions:

A fully open constant force receiving cavity, the receiving cavity includes an outer frame, an inner frame arranged inside the outer frame, a plurality of transverse connection and fixing components connected with the outer frame and the inner frame, and a plurality of inner walls arranged in the inner frame The constant force mechanism on the top, the outer frame, the inner frame and the transverse connection and fixing components surround a cavity for accommodating residual limbs, and the outer frame includes an outer frame base and a plurality of outer frames longitudinally arranged on the outer frame base Support strips, the inner frame includes an inner frame base and a plurality of inner frame support bars longitudinally arranged on the inner frame base, the inner frame base and the outer frame base correspond to each other, and the outer frame support bars and the inner frame support Corresponds to the position of the bar. Wherein, the cavity is used for accommodating and suspending the residual limb, and the outer frame support bars and the inner frame support bars are arranged longitudinally along the residual limb. Both the outer frame and the inner frame are open. The outer frame is a rigid structure, which has a certain supporting and fixing effect, and can be made of some materials such as carbon fiber; the inner frame is a semi-flexible structure, which not only has a certain fixing effect, but also can achieve a comfortable effect.

Further, the constant force mechanism includes a housing and an inner fixing plate, an outer fixing plate, a reset member and an adjustment assembly all arranged in the housing, the inner fixing plate and the outer fixing plate are arranged in parallel, and there is a The space for accommodating the reset part and the adjustment component, the reset part is respectively connected with the inner fixation plate and the outer fixation plate. Among them, there are four sets of constant force mechanisms, which are evenly attached to the inner frame support strips of the inner frame along the circumferential direction, the shell and the inner frame support strips are adhered, and the shell on the side of the residual limb is in contact with the residual limb , the side in contact with the residual limb and the side that is attached to the support bar of the inner frame are all rigid materials, and the other two sides are made of flexible materials, which are easy to compress. The reset part adopts memory alloy or constant force spring, and the memory alloy adopts NiTi shape memory Alloy, NiTi shape memory alloy has superelastic mechanical properties, which can realize constant force loading on the residual limb and solve the problem of safety and comfort of the socket. When the whole constant force mechanism is compressed or expanded, the reset part will also be compressed or expanded Deformation occurs, and when the compression or expansion disappears, the deformation of the reset part disappears and returns to its original state. On the opposite surface of the inner fixing plate and the outer fixing plate, a pair of bosses of the inner fixing plate are provided along the length direction of the inner fixing plate, and a plurality of internal holes for placing reset parts are opened on the bosses of the inner fixing plate. The fixing plate is placed in the groove, and the outer fixing plate is provided with a pair of outer fixing plate bosses along the length direction of the outer fixing plate on the surface opposite to the inner fixing plate. The placement slot of the external fixation plate where the reset part is placed, the position of the placement slot of the inner fixation plate corresponds to the placement slot of the outer fixation plate, the memory alloy is very thin, and can be directly inserted into the placement slot of the inner fixation plate and the placement slot of the outer fixation plate, constant force spring The end of the can also be set to a very thin form, directly inserted in the inner fixing plate placement groove and the outer fixing plate placement groove.

Further, the adjusting assembly includes a first nut, a second nut and an adjusting bolt, the first nut is arranged on the inner fixing plate, the second nut is arranged on the outer fixing plate, the first nut and the second nut The two nuts are arranged facing each other, and the outer fixing plate is provided with a through hole for the movement of the adjusting bolt, and the positions of the through hole, the second nut and the first nut are corresponding, and the adjusting bolt passes through the through hole and the second nut in turn and is connected with the second nut. The first nut can be flexibly connected, the first nut is integrally formed with the inner fixation plate, and the second nut is integrally formed with the outer fixation plate. The adjusting bolt includes a head and a threaded portion, the head is located on the outside of the outer fixing plate, and the distance between the inner fixing plate and the outer fixing plate can be adjusted by screwing in and out of the adjusting bolt. The first nut restricts the longitudinal movement of the adjusting bolt, and the second nut restricts the longitudinal and lateral movement of the adjusting bolt, so that the user can adjust the lateral displacement of the constant force mechanism by rotating the adjusting bolt. When the residual limb expands, the lateral displacement of the constant force mechanism is shortened by turning the adjustment bolt inward, and vice versa. In this way, a constant and comfortable force can be provided to the residual limb, a certain pre-compression can be carried out, the longitudinal suspension of the receiving cavity part can be ensured, and the receiving cavity can also make a corresponding change with the residual limb.

Further, the side of the internal fixation plate is provided with a plurality of connection ears of the internal fixation plate, and the side of the external fixation plate is provided with a plurality of connection ears of the external fixation plate that match the connection ears of the internal fixation plate. A limiting slot is provided on the connecting ear of the inner fixing plate, and a limiting pin is arranged on the connecting ear of the outer fixing plate, which is used to limit the horizontal movement distance of the inner fixing plate, the outer fixing plate, the NiTi shape memory alloy or the constant force spring.

Further, a velcro is provided on the shell on one side of the residual limb. The Velcro has the function of increasing the frictional force. By cooperating with the inner bushing on the residual limb, the frictional force is increased to ensure the suspension of the socket to a certain extent.

Further, the horizontal connection and fixing assembly includes a plurality of connectors and a plurality of first tension belts, second tension belts and fixing belts arranged transversely, and the ends of the first tension belts are connected to each other through the connectors. The outer frame support bar or the inner frame support bar are connected, the end of the second tension belt is connected with the outer frame support bar or the inner frame support bar through a connector, and the first tension belt is sequentially arranged along the length direction. There are a plurality of openings, the second tension belt passes through the openings and is adjustablely connected to the first tension belt, and both ends of the fixing belt are connected to the outer frame support bar or the inner frame support bar through connecting pieces. The horizontal connection and fixing component is used to connect the outer frame support bar and the outer frame support bar, the inner frame support bar and the inner frame support bar, the outer frame support bar and the inner frame support bar, and play the role of lateral fixation of the prosthetic socket. Adjust the length of the second tension belt in the first tension belt to wear or remove the socket, specifically: when the user wants to wear the socket, he only needs to loosen the second tension belt first, then tighten it after putting it on The second tension belt is only needed to be in a suitable position; when the user wants to remove the socket, he only needs to loosen the second tension belt, which is extremely simple and convenient.

Further, the outer frame support bar includes a first outer frame support bar and a second outer frame support bar, the first outer frame support bar and the second outer frame support bar are arranged oppositely, and the inner frame support bar includes a first outer frame support bar An inner frame support bar, a second inner frame support bar, a third inner frame support bar and a fourth inner frame support bar, the first inner frame support bar and the third inner frame support bar are arranged oppositely, and the second inner frame support bar The frame support bar and the fourth inner frame support bar are arranged oppositely, the first outer frame support bar is detachably connected to the first inner frame support bar, and the second outer frame support bar is detachably connected to the third inner frame support bar . The first outer frame support bar and the second outer frame support bar are longitudinally distributed in the left and right directions of the residual limb, the first inner frame support bar, the second inner frame support bar, the third inner frame support bar and the fourth inner frame support bar The strips are distributed longitudinally in the front, back, left, and right directions of the residual limb.

Further, the axial lengths of the first inner frame support bar, the third inner frame support bar and the fourth inner frame support bar are all greater than the axial length of the second inner frame support bar, and the first outer frame support bar And the axial length of the second outer frame support bar is greater than the axial length of the second inner frame support bar. The second inner frame support bar is shorter.

Further, the receiving cavity further includes a flexible bushing, which is arranged on the top end of the support bar of the inner frame. The flexible liner is strong and resilient enough to distribute pressure evenly across the surface of the flexible liner and is sufficiently supportive to support at least a portion of the pressure on the surface of the user away from the post or other weight-supporting member distribution, the pressure on the ischial area is greatly relieved.

Further, the outer frame base and the outer frame support bar are integrally formed, and the inner frame base and the inner frame support bar are detachably connected by bolts. In this way, the length of the inner frame can be adjusted according to the length of the residual limb, which is convenient and quick.

Furthermore, the outer frame is made of carbon fiber material, which plays a supporting role. Such a structural design can reduce the overall weight of the socket, and is also a guarantee for the function transmission of the socket.

Compared with the prior art, the present invention has the following advantages:

1. The traditional thigh socket is subverted through the modular design, the weight of the thigh socket is reduced, it is more humanized, and it is convenient for patients to wear.

2. Using the special mechanical properties of NiTi shape memory alloy with superelasticity and the elastic mechanical properties of constant force spring to design the constant force mechanism, realize constant force loading on the residual limb, and solve the problem of safety and comfort of the thigh socket.

3. The compression state of the constant force mechanism is driven by the bolt. No matter how the residual limb changes, the patient can adjust the rotating bolt to drive the state of the constant force mechanism to make appropriate changes until the residual limb feels comfortable and relieve the residual limb from being affected. In the case of too much or too little force, the residual limb can be subjected to a comfortable constant force no matter what the situation.

4. The Velcro is matched with the inner sleeve on the residual limb to increase the friction and ensure the suspension of the socket to a certain extent.

5. The present invention provides a controllable fully open constant force receiving cavity, which improves biocompatibility, that is, ensures the accuracy of force and motion transmission during use, and improves the comfort of patients wearing it.

Description of drawings

Figure 1-2 is a schematic diagram of the structure of a fully open constant force receiving cavity at different angles;

Fig. 3 is the structural representation of outer frame;

Figure 4-5 is a structural schematic diagram of different angles of the inner frame;

Fig. 6 is the front view of constant force mechanism;

Fig. 7 is the axonometric drawing of constant force mechanism;

Figure 8 is a top view of the constant force mechanism.

In the figure: 1-outer frame; 101-outer frame base; 102-first outer frame support bar; 103-second outer frame support bar; 2-inner frame; 201-inner frame base; 202-first inner frame support 203-the second inner frame support bar; 204-the third inner frame support bar; 205-the fourth inner frame support bar; 3-constant force mechanism; 301-inner fixing plate; 302-outer fixing plate; 303-reset 304-first nut; 305-second nut; 306-adjusting bolt; 307-connecting ear of inner fixing plate; 308-connecting ear of outer fixing plate; 309-limiting groove; 310-limiting pin; 311-inner Fixed plate boss; 312-outer fixed plate boss; 4-connector; 501-first tension belt A; 502-first tension belt B; 601-second tension belt A; 602-second tension Tight belt B; 701-fixing belt A; 702-fixing belt B; 703-fixing belt C; 704-fixing belt D; 705-fixing belt E; 706-fixing belt F; 707-fixing belt G; 8-flexible lining Set; 9-Velcro.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figures 1 and 2, a fully open constant force receiving cavity, the receiving cavity includes an outer frame 1, an inner frame 2 arranged inside the outer frame 1, and a plurality of transverse connections connected with the outer frame 1 and the inner frame 2 The fixed component and a plurality of constant force mechanisms 3 arranged on the inner wall of the inner frame 2, the outer frame 1, the inner frame 2 and the transversely connected fixed component form a cavity for accommodating residual limbs, and Fig. 2 shows that Fig. 1 is rotated 90 ° Schematic diagram of the structure.

As shown in Figure 3, the outer frame 1 includes an outer frame base 101 and a plurality of outer frame support bars longitudinally arranged on the outer frame base 101, and the outer frame support bars include a first outer frame support bar 102 and a second outer frame support bar 103, the first outer frame support bar 102 and the second outer frame support bar 103 are arranged oppositely, the first outer frame support bar 102, the second outer frame support bar 103 and the outer frame base 101 are integrally formed, the first outer frame support bar 102 A plurality of through holes for fixing the connector 4 are set on the second outer frame support bar 103 according to the situation.

As shown in Figures 4 and 5, the inner frame 2 includes an inner frame base 201 and a plurality of inner frame support bars longitudinally arranged on the inner frame base 201, and the inner frame support bars include a first inner frame support bar 202, a second inner frame support bar, and a second inner frame support bar. The supporting bar 203, the third inner frame supporting bar 204 and the fourth inner frame supporting bar 205, the first inner frame supporting bar 202 and the third inner frame supporting bar 204 are arranged oppositely, the second inner frame supporting bar 203 and the fourth inner frame supporting bar 203 The support bars 205 are arranged oppositely. The inner frame base 201, the first inner frame support bar 202, the second inner frame support bar 203, the third inner frame support bar 204 and the fourth inner frame support bar 205 are detachably connected by bolts. The inner frame support bar 202 , the second inner frame support bar 203 , the third inner frame support bar 204 and the fourth inner frame support bar 205 are provided with a plurality of through holes for fixing the connector 4 and the flexible bushing 8 according to the situation.

As shown in Figures 1 and 2, the inner frame base 201 is placed on the outer frame base 101, the first outer frame support bar 102 and the first inner frame support bar 202 are detachably connected by bolts, and the second outer frame support bar 103 is connected to the second outer frame support bar 103. The three inner frame support bars 204 are detachably connected by bolts, and the axial lengths of the first inner frame support bar 202 , the third inner frame support bar 204 and the fourth inner frame support bar 205 are all greater than the axis of the second inner frame support bar 203 The axial length of the first outer frame support bar 102 and the second outer frame support bar 103 is greater than the axial length of the second inner frame support bar 203 .

As shown in Figures 1 and 2, the lateral connection and fixing assembly includes a plurality of connecting pieces 4 and a plurality of first tension straps (including the first tension strap A501 and the first tension strap B502 ), the second tension straps, and the first tension straps arranged laterally. Tight belt (including second tension belt A601, second tension belt B602) and fixing belt (including fixing belt A701, fixing belt B702, fixing belt C703, fixing belt D704, fixing belt E705, fixing belt F706 and fixing belt G707 ), the ends of the first tension band A501 and the first tension band B502 are respectively connected with the outer frame support bar or the inner frame support bar through the connector 4, the ends of the second tension band A601 and the second tension band B602 The parts are respectively connected with the outer frame support bar or the inner frame support bar through the connector 4, and the ends of the fixing belt A701, the fixing belt B702, the fixing belt C703, the fixing belt D704, the fixing belt E705, the fixing belt F706 and the fixing belt G707 respectively pass through The connector 4 is connected with the support bar of the outer frame or the support bar of the inner frame. The first tension belt A501 is provided with a plurality of openings along the length direction in sequence, and the second tension belt A601 passes through the opening and can be adjusted with the first tension belt A501. To connect, the first tension belt B502 is sequentially provided with a plurality of openings along the length direction, and the second tension belt B602 passes through the openings and is adjustablely connected with the first tension belt B502. Wherein, the end of the first tension band A501 at the top of the socket is connected to the second outer frame support bar 103, and the end of the second tension band A601 at the top of the socket is connected to the first outer frame support bar 102, The first tension belt A501 and the second tension belt A601 at the top of the socket form a semicircle; one end of the fixing belt A701 at the top of the socket is connected to the second outer frame support bar 103, and the other end is connected to the fourth inner frame support bar 205 connections to form a 1/4 circle, one end of the fixing band B702 is connected to the second outer frame support bar 103, and the other end is connected to the first outer frame support bar 102 to form a 1/2 circle (the fixing band B702 in Fig. 1 is Flexible bushing 8 hides), and one end of fixing belt C703 is connected with the 4th inner frame support bar 205, and the other end is connected with the first outer frame support bar 102, forms 1/4 circle (Fig. The end of the first tension belt B502 at the bottom of the receiving cavity is connected to the second inner frame support bar 203, the end of the second tension belt B602 at the bottom of the receiving cavity is connected to the first outer frame support bar 102, and is located at the receiving cavity. The first tension belt B502 and the second tension belt B602 at the bottom of the cavity form a 1/4 circle; one end of the fixing belt D704 at the bottom of the receiving cavity is connected to the second outer frame support bar 103, and the other end is supported by the second inner frame The bars 203 are connected to form a 1/4 circle; one end of the fixing band E705 located at the bottom of the receiving cavity is connected to the second outer frame support bar 103, and the other end is connected to the fourth inner frame support bar 205 to form a 1/4 circle; One end of the fixing belt G707 at the bottom of the cavity is connected to the fourth inner frame support bar 205, and the other end is connected to the first outer frame support bar 102 to form a 1/4 circle; the fixing belt F706 at the bottom of the receiving cavity is also located at the end of the fixing belt D704 Below, one end of the fixing band F706 is connected to the second outer frame support bar 103, and the other end is connected to the second inner frame support bar 203 to form a 1/4 circle (compared to view in Figures 1 and 2). The number of the first tension belt, the second tension belt and the fixing belt can be set according to the situation, and is not limited to the number and position in the present invention, and the connector 4 can be a bolt or a screw or the like.

As shown in Figures 1 and 2, the receiving cavity also includes a flexible bushing 8, which is arranged on the top of the inner frame support bar, and is sequentially connected with the first inner frame support bar 202, the fourth inner frame support bar 205 and the third inner frame support bar. The inner frame support bars 204 are connected.

As shown in Figures 6-8, the constant force mechanism 3 includes a housing (the housing is omitted in Figures 6-8, and the housing can be seen in Figures 1 and 2) and an internal fixing plate 301, The outer fixation plate 302, the reset member 303 (NiTi shape memory alloy and constant force spring can be used) and the adjustment assembly, the shell and the support bar of the inner frame are adhered to each other, and the shell on the side of the residual limb is in contact with the residual limb , the side in contact with the residual limb and the side attached to the inner frame support bar are all rigid materials, and the other two sides are made of flexible materials. The inner fixation plate 301 and the outer fixation plate 302 are arranged in parallel, and the inner fixation plate 301 and the outer fixation plate Between the plates 302 there is a space for accommodating the reset part 303 and the adjustment assembly. The reset part 303 is respectively connected with the inner fixation plate 301 and the outer fixation plate 302, and the shell on the side of the residual limb is provided with a Velcro 9, as shown in the figure 1, 2 shown. On the opposite surface of the inner fixing plate 301 and the outer fixing plate 302, a pair of inner fixing plate bosses 311 are provided along the length direction of the inner fixing plate 301, and a plurality of inner fixing plate bosses 311 are provided for placement and reset. The inner fixing plate placement slot of part 303 (omitted in the figure), the outer fixing plate 302 is provided with a pair of outer fixing plate bosses 312 along the length direction of the outer fixing plate 302 on the surface facing the inner fixing plate 301. The fixed plate boss 312 is provided with a plurality of external fixed plate placement slots (omitted in the figure) for placing the reset member 303, the inner fixed plate placement slots correspond to the positions of the outer fixed plate placement slots, and the inner fixed plate bosses 311 and The boss 312 of the outer fixing plate can be formed integrally with the inner fixing plate 301 and the outer fixing plate 302 respectively, or it can be a semi-cylindrical pin column, which is respectively fixed on the inner fixing plate 301 and the outer fixing plate 302, specifically as shown in Figure 7, 8. The adjusting assembly includes a first nut 304 integrally formed with the inner fixing plate 301, a second nut 305 integrally formed with the outer fixing plate 302, and an adjusting bolt 306. The first nut 304 is arranged on the inner fixing plate 301, and the second nut 305 is arranged On the outer fixing plate 302, the first nut 304 and the second nut 305 are arranged facing each other, the inner walls of the first nut 304 and the second nut 305 are all provided with threads, and the outer fixing plate 302 is provided with a movement for the adjustment bolt 306. The through hole, the position of the through hole, the second nut 305 and the first nut 304 are corresponding. The adjusting bolt 306 passes through the through hole and the second nut 305 in turn and is movably connected with the first nut 304. The adjusting bolt 306 includes a head part and the threaded part, the head is located on the outside of the outer fixing plate 302, and the distance between the inner fixing plate 301 and the outer fixing plate 302 is adjusted by screwing in and out of the adjusting bolt 306, specifically as shown in Figure 8, it is supported with the inner frame Notches for the movement of the adjusting bolt 306 are all provided on the side of the housing where the strips fit together, the support strips of the inner frame and the support strips of the outer frame, as shown in Figure 3-5. The side of the inner fixing plate 301 is provided with a plurality of inner fixing plate connecting ears 307 arranged towards the outer fixing plate 302, and the side of the outer fixing plate 302 is provided with a plurality of inner fixing plate connecting ears 307 that cooperate with the inner fixing plate and are fixed toward the inside. The outer fixing plate connecting ear 308 provided on the plate 301, the inner fixing plate connecting ear 307 is arranged in a circle along the periphery of the inner fixing plate 301, the outer fixing plate connecting ear 308 is arranged in a circle along the outer fixing plate 302, and the outer fixing plate The connecting ear 308 is located on the inner side of the connecting ear 307 of the inner fixing plate, the connecting ear 307 of the inner fixing plate and the connecting ear 308 of the outer fixing plate are all located in the space between the inner fixing plate 301 and the outer fixing plate 302, and the connecting ear 307 of the fixing plate There is a through limiting groove 309, and a limiting pin 310 is provided on the connecting ear 308 of the outer fixing plate. The limiting pin 310 is inserted into the limiting groove 309 and moves horizontally in the limiting groove 309, as shown in Figures 7 and 8 . There are four groups of constant force mechanisms 3, which are evenly attached to the inner frame support bars of the inner frame 2 along the circumferential direction.

The above descriptions of the embodiments are for those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the present invention is not limited to the above-mentioned embodiments. Improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a full open type constant force accepting chamber, a serial communication port, the accepting chamber includes outer frame (1), locates outer frame (1) inside inner frame (2), a plurality of transverse connection fixed subassembly and the inner frame (2) be connected and constant force mechanism (3) on the inner wall of inner frame (2) are located to a plurality of, outer frame (1), inner frame (2) and transverse connection fixed subassembly enclose into the cavity that is used for holding the residual limb, outer frame (1) includes outer frame base (101) and vertically locates a plurality of outer frame support bars on outer frame base (101), inner frame (2) include inner frame base (201) and vertically locate a plurality of inner frame support bars on inner frame base (201), inner frame base (201) and outer frame base (101) position are corresponding, the position of outer frame support bar and inner frame support bar is corresponding;

the constant force mechanism (3) comprises a shell, an inner fixing plate (301), an outer fixing plate (302), a resetting piece (303) and an adjusting assembly, wherein the inner fixing plate (301) and the outer fixing plate (302) are arranged in the shell in parallel, a gap for accommodating the resetting piece (303) and the adjusting assembly is arranged between the inner fixing plate (301) and the outer fixing plate (302), and the resetting piece (303) is connected with the inner fixing plate (301) and the outer fixing plate (302) respectively; the reset piece adopts memory alloy or a constant force spring;

the adjusting component comprises a first nut (304), a second nut (305) and an adjusting bolt (306), the first nut (304) is arranged on the inner fixing plate (301), the second nut (305) is arranged on the outer fixing plate (302), the first nut (304) and the second nut (305) are arranged right, a through hole matched with the second nut (305) is formed in the outer fixing plate (302), and the adjusting bolt (306) sequentially penetrates through the through hole and the second nut (305) and is movably connected with the first nut (304).

2. The fully-open constant-force receiving cavity according to claim 1, wherein a plurality of inner fixing plate connecting lugs (307) are arranged on the side portion of the inner fixing plate (301), a plurality of outer fixing plate connecting lugs (308) matched with the inner fixing plate connecting lugs (307) are arranged on the side portion of the outer fixing plate (302), a limiting groove (309) is formed in each inner fixing plate connecting lug (307), and a limiting pin (310) is arranged on each outer fixing plate connecting lug (308).

3. The fully open constant force socket according to claim 1, wherein a magic tape (9) is provided on the case on the stump side.

4. The fully-open type constant-force receiving cavity according to claim 1, wherein the transverse connection fixing component comprises a plurality of connecting pieces (4), a plurality of first tightening straps, a plurality of second tightening straps and a plurality of fixing straps, the first tightening straps, the second tightening straps and the fixing straps are transversely arranged, the end portions of the first tightening straps are connected with the outer frame supporting bar or the inner frame supporting bar through the connecting pieces (4), the end portions of the second tightening straps are connected with the outer frame supporting bar or the inner frame supporting bar through the connecting pieces (4), the end portions of the fixing straps are connected with the outer frame supporting bar or the inner frame supporting bar through the connecting pieces (4), a plurality of openings are sequentially formed in the first tightening straps in the length direction, and the second tightening straps penetrate through the openings and are adjustably connected with the first tightening straps.

5. The utility model relates to a full open type constant force accepting cavity of claim 1, characterized in that, outer frame support bar includes first outer frame support bar (102) and second outer frame support bar (103), first outer frame support bar (102) and second outer frame support bar (103) set up relatively, inner frame support bar includes first inner frame support bar (202), second inner frame support bar (203), third inner frame support bar (204) and fourth inner frame support bar (205), first inner frame support bar (202) and third inner frame support bar (204) set up relatively, second inner frame support bar (203) and fourth inner frame support bar (205) set up relatively, first outer frame support bar (102) can dismantle with first inner frame support bar (202) and be connected, second outer frame support bar (103) can dismantle with third inner frame support bar (204) and be connected.

6. The fully open constant force socket according to claim 5, wherein the axial lengths of the first inner frame support bar (202), the third inner frame support bar (204) and the fourth inner frame support bar (205) are all greater than the axial length of the second inner frame support bar (203), and the axial lengths of the first outer frame support bar (102) and the second outer frame support bar (103) are all greater than the axial length of the second inner frame support bar (203).

7. A fully open constant force socket according to any of claims 1 to 6, further comprising a flexible liner (8), said flexible liner (8) being provided at the top end of the inner frame support strip.

8. The fully open constant force socket according to any one of claims 1 to 6, wherein the outer frame base (101) and the outer frame support bars are integrally formed, and the inner frame base (201) and the inner frame support bars are detachably connected through bolts.

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