Socket cavity structures and prostheses

Abstract

The present invention discloses a receiving cavity inner cavity structure and a prosthesis, wherein the receiving cavity inner cavity structure comprises a receiving cavity body and a hanging ear; a receiving cavity is formed in the receiving cavity body, and one end of the receiving cavity body is provided with a wearing opening connected to the receiving cavity; the two ends of the hanging ear are respectively connected to the edges of the wearing opening on opposite sides, the hanging ear has a back-to-back front side and a back side, the front side has a guide channel connected to the wearing opening, the patient's stump is used to extend into the receiving cavity through the guide channel and the wearing opening in turn, and the back side has an avoidance opening for avoiding the patient's elbow joint. The technical solution of the present invention can improve the problem of uncomfortable wearing of patients.

Description

Technical Field

[0001] The present invention relates to the technical field of wearable intelligent limb substitutes and medical devices, and in particular to a receiving cavity inner cavity structure and a prosthesis. Background Art

[0002] After amputation, patients usually install prostheses on the stump to obtain basic limb functions, and the prosthesis needs to be worn on the stump through the inner cavity structure of the socket. The existing prosthetic socket structure usually wraps the entire amputated forearm when worn, and the elbow joint is also wrapped. In this way, during the flexion and extension process of the patient, the elbow joint will rub against the prosthetic socket structure, causing discomfort to the patient. Summary of the invention

[0003] The main purpose of the present invention is to provide a receiving cavity structure and a prosthesis, aiming to improve the problem of discomfort for patients when wearing the prosthesis.

[0004] To achieve the above-mentioned purpose, the present invention provides a receiving cavity inner cavity structure, comprising:

[0005] A receiving cavity body, wherein a receiving cavity is formed in the receiving cavity body, and one end of the receiving cavity body is provided with a wearing opening connected to the receiving cavity;

[0006] The hanging ear has two ends connected to the edges of the wearing opening on opposite sides respectively, the hanging ear has a front side and a rear side facing each other, the front side has a guide channel connected to the wearing opening, the patient's residual end is used to extend into the receiving cavity through the guide channel and the wearing opening in turn, and the rear side has an avoidance opening for avoiding the patient's elbow joint.

[0007] In one embodiment of the present invention, the inner side wall of the escape opening is a smooth curved surface.

[0008] In one embodiment of the present invention, the edge of the avoidance opening is provided with a flange for reserving a range of motion for flexion and extension of the patient's arm.

[0009] In one embodiment of the present invention, the end face where the wearing opening is located corresponds to the edge of the guide channel and has a recessed portion, and the ear loop has two elbow pattern corresponding portions arranged opposite to each other, and the elbow pattern corresponding portions are used to be arranged flush with the patient's elbow pattern, and the distance between the elbow pattern corresponding portions and the lowest point of the recessed portion is defined as L, then the condition is satisfied: 35mm≤L≤40mm.

[0010] In one embodiment of the present invention, the ear hook also has a relatively arranged pressure portion, which is located above the corresponding portion of the elbow crease and is used to be clamped above the medial and lateral condyles of the patient's humerus and to apply pressure to the soft tissue above the medial and lateral condyles of the patient's humerus.

[0011] In one embodiment of the present invention, the ear hook further has a fixing portion, which is located between the two pressure portions and is used to be clamped above the patient's olecranon.

[0012] In an embodiment of the present invention, the width of the hanging ear is defined as M, which satisfies the following condition: 7 mm ≤ M ≤ 17 mm.

[0013] In one embodiment of the present invention, a side wall of the receiving cavity body is provided with an air vent connected to the receiving cavity.

[0014] In one embodiment of the present invention, the receiving cavity body and the hanging ear are an integrally formed structure;

[0015] And / or, the receiving cavity body and the hanging ear are thermoplastic polyurethane elastomer rubber body or polylactic acid body.

[0016] The present invention also provides a prosthesis, comprising:

[0017] The structure of the receptor cavity;

[0018] An external cavity structure of the receiving cavity, wherein the external cavity structure of the receiving cavity is sleeved on the internal cavity structure of the receiving cavity;

[0019] A manipulator connected to the receiving cavity external cavity structure;

[0020] The receiving cavity structure includes:

[0021] A receiving cavity body, wherein a receiving cavity is formed in the receiving cavity body, and one end of the receiving cavity body is provided with a wearing opening connected to the receiving cavity;

[0022] The hanging ear has two ends connected to the edges of the wearing opening on opposite sides respectively, the hanging ear has a front side and a rear side facing each other, the front side has a guide channel connected to the wearing opening, the patient's residual end is used to extend into the receiving cavity through the guide channel and the wearing opening in turn, and the rear side has an avoidance opening for avoiding the patient's elbow joint.

[0023] The receiving cavity inner cavity structure of the present invention is achieved by connecting the two ends of the ear loop to the edges of the opposite sides of the wearing opening in the receiving cavity body, and the front side of the ear loop has a guide channel connected to the wearing opening, and the rear side of the ear loop has an avoidance opening. Then, when the patient wears the receiving cavity inner cavity structure, the patient's stump can be inserted into the receiving cavity of the receiving cavity body through the guide channel and the wearing opening in sequence, so that the patient's elbow joint is exposed at the avoidance opening, and the patient's elbow joint is avoided through the avoidance opening. In this way, during the flexion and extension process of the patient, the position of the elbow joint will not rub against the receiving cavity structure, thereby improving the problem of the patient's discomfort in wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the receiving cavity structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the patient's arm;

[0027] Figure 3 This is a schematic diagram of the structure of an embodiment of the receiving cavity structure of the present invention when worn on the patient's arm;

[0028] Figure 4 It is a schematic diagram of the structure of another embodiment of the receiving cavity inner cavity structure of the present invention when it is worn on the patient's arm;

[0029] Figure 5 This is a schematic diagram of the structure of an embodiment of the receiving cavity structure of the present invention when the patient's arm is flexed;

[0030] Figure 6 It is a schematic diagram of the structure of an embodiment of the receiving cavity structure of the present invention when used in the process of flexion and extension of the patient's arm;

[0031] Figure 7 This is a schematic diagram of the structure of an embodiment of the receiving cavity structure of the present invention when used for extending the patient's arm.

[0032] Description of Figure Numbers:

[0033]

[0034]

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides a receiving cavity inner cavity structure 100 and a prosthesis, aiming to improve the problem of discomfort for patients when wearing the prosthesis.

[0040] The specific structure of the receiving cavity inner cavity structure 100 of the present invention is described below:

[0041] Combined with reference Figures 1 to 7 In one embodiment of the receiving cavity inner cavity structure 100 of the present invention, the receiving cavity inner cavity structure 100 includes a receiving cavity body 10 and a hanging ear 20; a receiving cavity is formed in the receiving cavity body 10, and one end of the receiving cavity body 10 is provided with a wearing opening 11 connected to the receiving cavity; the two ends of the hanging ear 20 are respectively connected to the edges of the wearing opening 11 on opposite sides, the hanging ear 20 has a front side and a rear side facing each other, the front side has a guide channel 21 connected to the wearing opening 11, the patient's stump 210 is used to extend into the receiving cavity through the guide channel 21 and the wearing opening 11 in turn, and the rear side has an avoidance opening 22 for avoiding the patient's elbow joint 220.

[0042] It can be understood that the receiving cavity inner cavity structure 100 of the present invention is achieved by connecting the two ends of the ear hook 20 to the edges of the opposite sides of the wearing opening 11 in the receiving cavity body 10, and the front side of the ear hook 20 has a guide channel 21 connected to the wearing opening 11, and the back side of the ear hook 20 has an avoidance opening 22. Then, when the patient wears the receiving cavity inner cavity structure 100, the patient's stump 210 can be inserted into the receiving cavity of the receiving cavity body 10 through the guide channel 21 and the wearing opening 11 in turn, so that the patient's elbow joint 220 is exposed at the avoidance opening 22, and the patient's elbow joint 220 is avoided through the avoidance opening 22. In this way, during the flexion and extension process of the patient, the position of the elbow joint 220 will not rub against the receiving cavity structure, thereby improving the problem of discomfort for the patient.

[0043] In addition, under the guidance of the guide channel 21 on the front side of the ear hook 20, the patient's stump 210 can smoothly pass through the wearing opening 11 and extend into the receiving cavity, so as to achieve rapid wearing of the receiving cavity inner cavity structure 100.

[0044] It should be noted that the traditional preparation process of the receiving cavity inner cavity structure 100 usually requires the patient to be molded by plaster, artificially turned over, and then the plaster mold is designed, and then the resin is poured to form an integral part. After the resin is solidified, the production of the receiving cavity inner cavity structure 100 can be completed. After that, the relevant accessory model (the model for making the receiving cavity outer cavity structure) is placed on the outer side of the receiving cavity inner cavity structure 100, and the receiving cavity outer cavity structure is also made by resin pouring. Among them, in the process of taking the model, the patient's stump 210 is wrapped with a plaster bandage. The design method is based on the deformity symptoms on the patient's surface, combined with the position of the human skeleton and production experience. However, the process of using plaster is cumbersome and the plaster model is easy to deform during transportation and movement. The plaster will expand to a certain extent after absorbing water, and the model is not docile and causes dimensional deviation. The plaster after use is difficult to reuse and is easy to cause pollution. The working environment is prone to dust, which is not good for the lungs of orthopedists.

[0045] The preparation process of the receiving cavity inner cavity structure 100 disclosed in the present application is to obtain a model by optical scanning. The bone protrusions, soft tissue positions, and sensitive skin parts of the amputated forearm are positioned by sticking scanned and identifiable marking points on the skin to ensure that the obtained model is more accurately positioned than the traditional method of shaping, and the model data transmission is faster. Specifically, the anatomical structure is accurately located on the patient model according to the scanned positioning points. When designing the software, each step is recorded and the corresponding thickness and hardness are displayed. The model is designed according to the one-to-one ratio during scanning, so the accuracy of the model is guaranteed.

[0046] In actual application, the receiving cavity body 10 and the hanging ear 20 can be connected together by bonding, screw connection, snap connection, etc. Of course, the receiving cavity body 10 and the hanging ear 20 can also be an integrally formed structure; for example, in one embodiment, in order to improve the connection strength between the receiving cavity body 10 and the hanging ear 20 and reduce the manufacturing process, the receiving cavity body and the hanging ear 20 can be designed as an integrally formed structure. Specifically, after the model is obtained by optical scanning, the receiving cavity body and the hanging ear 20 can be manufactured by 3D printing to obtain the receiving cavity inner cavity structure 100.

[0047] In one embodiment, the receiving cavity body and the ear 20 are thermoplastic polyurethane elastomer rubber bodies or polylactic acid bodies, that is, the material of the receiving cavity body and the ear 20 can be thermoplastic polyurethane elastomer rubber (TPU) or polylactic acid (PLA); wherein, since the hardness range of thermoplastic polyurethane elastomer rubber (TPU) is between 60HA and 85HD, the receiving cavity inner cavity structure 100 made of thermoplastic polyurethane elastomer rubber (TPU) can be elastic and have sufficient supporting strength, and the thermoplastic polyurethane elastomer rubber (TPU) also has high wear resistance, oil resistance, etc., which can effectively extend the service life of the receiving cavity inner cavity structure 100; in addition, polylactic acid (PLA) has good thermal stability, the processing temperature is between 170 and 230°C, and it also has good elasticity and strength, so the receiving cavity inner cavity structure 100 made of polylactic acid (PLA) can be elastic and have sufficient supporting strength, which can also effectively extend the service life of the receiving cavity inner cavity structure 100.

[0048] Further, see Figure 1 , Figures 3 to 7 In one embodiment of the receiving cavity structure 100 of the present invention, the inner wall of the avoidance opening 22 is a smooth arc surface, that is, the inner wall of the avoidance opening 22 will not have any sharp protrusions, depressions or other structures. In this way, when the patient's arm 200 is flexed and extended, the inner wall of the avoidance opening 22 can avoid scratching the patient's skin, thereby improving the comfort of the patient's wearing.

[0049] Further, see Figure 4 In one embodiment of the receiving cavity structure 100 of the present invention, the edge of the avoidance opening 22 is provided with a flange 221 for reserving a range of motion for flexion and extension of the patient's arm 200.

[0050] With such arrangement, during the flexion and extension process of the patient's arm 200, the flange 221 at the edge of the avoidance opening 22 can reserve a range of flexion and extension for the patient's arm 200, so that the patient's arm 200 can more easily achieve the flexion and extension process, and can also reduce the probability of friction between the position of the patient's arm 200 near the elbow joint 220 and the receiving cavity inner cavity structure 100 during the flexion and extension process, so that the patient's wearing comfort can be further improved.

[0051] It should be noted that the edge of the avoidance opening 22 is provided with a flange 221, which means that the edge of the avoidance opening 22 is expanded outwards, specifically, the expansion can be between 2 mm and 3 mm.

[0052] Further, see Figure 1 and Figure 7 In one embodiment of the receiving cavity intracavitary structure 100 of the present invention, the end surface of the wearing opening 11 corresponding to the edge of the guide channel 21 has a recessed portion 111, and the ear hook 20 has two elbow pattern corresponding portions 23 arranged opposite to each other, and the elbow pattern corresponding portions 23 are used to be arranged flush with the patient's elbow pattern corresponding portions 23, and the distance between the elbow pattern corresponding portions 23 and the lowest point of the recessed portion 111 is defined as L, then the condition is satisfied: 35mm≤L≤40mm.

[0053] In this way, when the distance between the corresponding part of the elbow line corresponding part 23 and the lowest point of the recessed part 111 is less than 35 mm, the front side of the patient's arm 200 is easy to scrape the recessed part 111 during the flexion and extension of the patient's arm 200, and the recessed part 111 will limit the flexion and extension range of the patient's arm 200; and when the distance between the corresponding part of the elbow line corresponding part 23 and the lowest point of the recessed part 111 is greater than 40 mm, the protective effect of the receiving cavity intracavitary structure 100 on the patient's arm 200 will be reduced; in this way, by controlling the distance between the corresponding part of the elbow line corresponding part 23 and the lowest point of the recessed part 111 to be between 35 mm and 40 mm, the above-mentioned problem can be effectively improved.

[0054] Further, see Figure 1 , Figures 3 to 7 In one embodiment of the receiving cavity structure 100 of the present invention, the ear hook 20 also has a relatively arranged pressure portion 24, and the pressure portion 24 is located above the corresponding portion of the elbow crease corresponding portion 23, and is used to be clamped above the medial and lateral condyles 240 of the patient's humerus, and is used to apply pressure to the soft tissue above the medial and lateral condyles 240 of the patient's humerus.

[0055] With such arrangement, when the patient wears the receiving cavity inner cavity structure 100, the two pressure parts 24 of the ear hook 20 can be used to be clamped above the medial and lateral condyles 240 of the patient's humerus, and the two pressure parts 24 can simultaneously uniformly press the soft tissue above the medial and lateral condyles 240 of the patient's humerus inward by 5 mm to apply pressure to the soft tissue above the medial and lateral condyles 240 of the patient's humerus, thereby avoiding relative shaking between the ear hook 20 and the patient's arm 200 during the wearing process, which may affect the wearing stability of the receiving cavity inner cavity structure 100.

[0056] Specifically, when the patient is wearing the receiving cavity inner cavity structure 100, the pressure portion 24 can be used to be clamped about 3 mm above the medial and lateral condyles 240 of the patient's humerus. When subjected to gravity, the receiving cavity inner cavity structure 100 will slide downward to allow the pressure portion 24 to slide down to be clamped about 1 mm above the medial and lateral condyles 240 of the patient's humerus, thereby suspending the receiving cavity body 10.

[0057] Further, see Figure 1 , Figures 3 to 7 In one embodiment of the receiving cavity intracavitary structure 100 of the present invention, the ear hook 20 further has a fixing portion 25, and the fixing portion 25 is located between the two pressure portions 24 and is used to be clamped above the patient's olecranon 250.

[0058] With such arrangement, when the patient wears the receiving cavity inner cavity structure 100, the fixing portion 25 of the ear hook 20 can be used to clamp above the patient's olecranon 250, and the fixing portion 25 can uniformly press the soft tissue above the patient's olecranon 250 inward by 5 mm, so as to fully clamp the patient's arm 200 through the fixing portion 25 of the ear hook 20 to avoid detachment.

[0059] Further, see Figure 1 In one embodiment of the receiving cavity structure 100 of the present invention, the width of the ear 20 is defined as M, which satisfies the condition: 7mm≤M≤17mm.

[0060] With such a configuration, when the width of the ear hook 20 is less than 7 mm, the hanging strength of the ear hook 20 will be affected, and may even be prone to the risk of breakage, thereby affecting the service life of the receiving cavity inner cavity structure 100; when the width of the ear hook 20 is greater than 17 mm, the contact area between the ear hook 20 and the patient's arm 200 will be too large, and then during the flexion and extension of the patient's arm 200, the probability of friction between the patient's arm 200 and the ear hook 20 will increase, making the patient uncomfortable to wear; in this way, the above-mentioned problems can be effectively improved by controlling the width of the ear hook 20 to be between 7 mm and 17 mm.

[0061] Further, see Figure 1 and Figure 3In one embodiment of the receiving cavity inner cavity structure 100 of the present invention, the side wall of the receiving cavity body 10 is provided with an air vent 12 connected to the receiving cavity.

[0062] With such arrangement, when the patient wears the receiving cavity inner cavity structure 100, the arm stump 210 inserted into the receiving cavity body 10 can be ventilated through the ventilation hole 12, so that the wearing comfort of the patient is further improved.

[0063] Specifically, a plurality of ventilation holes 12 may be provided, and the plurality of ventilation holes 12 may be spaced and distributed at various positions of the receiving cavity body 10 to ensure the comfort of the patient when wearing the device.

[0064] The present invention also proposes a prosthesis, which includes a receiving cavity structure, a manipulator, and the receiving cavity inner cavity structure 100 as described above. The specific structure of the receiving cavity inner cavity structure refers to the above embodiment. Since the present prosthesis adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the receiving cavity outer cavity structure is sleeved on the receiving cavity inner cavity structure 100; the manipulator is connected to the receiving cavity outer cavity structure.

[0065] Specifically, the structure of the external cavity of the receiving cavity can be connected to the inner cavity of the receiving cavity by means of screws, snaps, bonding, etc.; and the manipulator can also be connected to the external cavity of the receiving cavity by means of screws, snaps, bonding, etc.

[0066] In addition, a ventilation opening may be provided on the external cavity structure of the receiving cavity, and the ventilation opening may be connected to the ventilation hole 12 on the internal cavity of the receiving cavity, so that the arm stump 210 inserted into the receiving cavity body 10 can be ventilated through the ventilation hole 12 on the internal cavity structure 100 of the receiving cavity and the ventilation opening on the external cavity structure of the receiving cavity, so as to further improve the wearing comfort of the patient.

[0067] It should be noted that the structure and function of the receiving cavity inner cavity structure 100 in the prosthesis provided in this embodiment are the same as the structure and function of the receiving cavity inner cavity structure 100 provided in the above embodiment. For details, please refer to the description of the above embodiment, and no further details will be given here.

[0068] Those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A receiving cavity inner cavity structure, characterized in that: include: A receiving cavity body, wherein a receiving cavity is formed in the receiving cavity body, and one end of the receiving cavity body is provided with a wearing opening connected to the receiving cavity; The two ends of the hanging ear are respectively connected to the edges of the opposite sides of the wearing opening, the hanging ear has a front side and a rear side facing each other, the front side has a guide channel connected to the wearing opening, the patient's stump is used to extend into the receiving cavity through the guide channel and the wearing opening in sequence, and the rear side has an avoidance opening for avoiding the patient's elbow joint; The end surface where the wearing opening is located corresponds to the edge of the guide channel and has a recessed portion, and the ear loop has two elbow crease corresponding portions arranged opposite to each other, and the elbow crease corresponding portions are used to be arranged flush with the patient's elbow crease, and the distance between the elbow crease corresponding portions and the lowest point of the recessed portion is defined as L, then the condition is satisfied: 35mm≤L≤40mm; The ear hook also has two pressure parts arranged opposite to each other, the pressure parts are located above the corresponding part of the elbow crease, and are used to be clamped above the medial and lateral condyles of the patient's humerus, and the two pressure parts are used to uniformly press the soft tissue above the medial and lateral condyles of the patient's humerus inward by 5 mm at the same time, so as to apply pressure to the soft tissue above the medial and lateral condyles of the patient's humerus; The ear hook also has a fixing portion, which is located between the two pressure portions and is used to be clamped above the patient's olecranon, and the fixing portion is used to uniformly compress the soft tissue above the patient's olecranon 5 mm inward.

2. The receiving cavity inner cavity structure according to claim 1, characterized in that: The inner side wall of the avoidance opening is a smooth curved surface.

3. The receiving cavity structure according to claim 1, characterized in that: The edge of the avoidance opening is provided with a flange for reserving a range of motion for the patient's arm flexion and extension.

4. The receiving cavity inner cavity structure according to any one of claims 1 to 3, characterized in that: The width of the hanging ear is defined as M, and the following condition is satisfied: 7 mm ≤ M ≤ 17 mm.

5. The receiving cavity inner cavity structure according to any one of claims 1 to 3, characterized in that: The side wall of the receiving cavity body is provided with an air vent which is connected with the receiving cavity.

6. The receiving cavity inner cavity structure according to any one of claims 1 to 3, characterized in that: The receiving cavity body and the hanging ear are an integrally formed structure; And / or, the receiving cavity body and the hanging ear are thermoplastic polyurethane elastomer rubber body or polylactic acid body.

7. A prosthesis, characterized in that: include: The receiving cavity inner cavity structure according to any one of claims 1 to 6; An external cavity structure of the receiving cavity, wherein the external cavity structure of the receiving cavity is sleeved on the internal cavity structure of the receiving cavity; A manipulator is connected to the receiving cavity external cavity structure.

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