CN215584486U - 3D prints half sufficient artificial limb - Google Patents

Abstract

The application provides a 3D prints half sufficient artificial limb includes: an inner half-foot body for wrapping and carrying a patient's foot; the outer hollow structure is coated on the foot surface of the inner half-foot main body; and the supporting connecting part is arranged between the inner half-foot main body and the outer hollow structure. The method can be used for patients with congenital half-foot or partial-foot amputation, the data model of the foot anatomical structure is obtained by optical scanning, and the data model is customized and accurately designed according to the foot anatomical structure of the patient, so that the foot of the patient is more fitted, the patient feels comfortable to wear, the compliance is good, and the 3D printing is adopted, so that the time consumption is relatively short, the materials are saved, and the labor cost and the time consumption are saved; simultaneously, this application half-foot artificial limb top adopts hollow out construction design, possess ventilative light and handy characteristics, and the patient walks more stably after penetrating shoes. In addition, the foot compensation and prevention correction device can also play a role in foot compensation and prevention correction, and prevent other joint parts of a patient from being diseased due to unstable stress of the foot.

Description

3D prints half sufficient artificial limb

Technical Field

The application relates to the technical field of semi-foot artificial limbs, in particular to a 3D printing semi-foot artificial limb.

Background

By midfoot is generally meant that the absence of a portion of the patient's forefoot region includes congenital toe loss and partial foot amputation. Congenital toe loss is usually caused by a series of genetic factors, partial foot amputation is usually caused by amputation of diabetes, vascular insufficiency, trauma, congenital malformation, chilblain and other factors, and half-feet usually affect the gait of a patient besides the image of the patient.

The half-foot artificial limb is suitable for patients who can walk by wearing common shoes and have partial or complete amputation of toes; the shoe has the functions of compensating defects and load bearing of feet and preventing the deformation of the toe cap.

At present, the most commonly used artificial half-foot limb in the market is a silica gel artificial half-foot limb. The appearance color of the artificial foot is similar to that of a real person, a semi-finished product is tried on in the manufacturing process, after the shape of the stump of a user is formed, the model is taken out after the shaping is normal, and the finished product is manufactured to ensure the size to be proper.

However, the conventional artificial half-foot or orthopedic pad is usually made of silicon rubber, sponge, EVA foam board or polyvinyl chloride resin, and the manufacture needs to manually measure the body surface size to record relevant information, try on the semi-finished product first, obtain the shape of the residual limb after the residual limb of the user is shaped, then obtain the shape of the residual limb through plaster molding, and finally complete the manufacture in the modes of silica gel injection molding and the like. Therefore, the model usually has the defects of large error, long time consumption, large size of the comparison side foot, poor sealing performance, poor air permeability and the like.

SUMMERY OF THE UTILITY MODEL

In view of the above-identified deficiencies of the prior art, the present application provides a 3D printed prosthetic half-foot that addresses at least one of the problems associated with the prior art.

To achieve the above and other related objects, the present application provides a 3D printed prosthetic half-foot, the prosthetic half-foot comprising: an inner half-foot body for wrapping and carrying a patient's foot; the outer hollow structure is coated on the foot surface of the inner half-foot main body; and the supporting connecting part is arranged between the inner half-foot main body and the outer hollow structure.

In an embodiment of the present application, a front sole structure is disposed at a front end of the external hollow structure, and the size and shape of the front sole structure are consistent with those of a healthy side foot.

In one embodiment of the present application, the inner semi-foot body comprises: a plantar half of the foot, the structure of which is designed according to the anatomical structure of the patient's foot and plantar pressure data; the structure of the foot stump is correspondingly designed according to the shape and the size of the foot stump of the patient; the heel fixing part is structurally designed according to the actual shape and size of the heel of the patient and is used for attaching and fixing the ankle and the shank; the heel fixing part is provided with a binding band; the instep support body and the half sole form a containing space and is connected to the heel fixing part through the sole stub; wherein the support connecting part is arranged on the instep support body; the air holes are formed in the instep support.

In an embodiment of the present application, the supporting connection portion is a plurality of small cylinders respectively disposed on the left and right sides.

In an embodiment of the present application, the external hollow structure is a honeycomb-shaped hollow structure; the top opening of the external hollow structure is U-shaped, the rear end of the external hollow structure is disconnected, and hollow nets are arranged on two sides of the external hollow structure.

In an embodiment of the present application, the front end of the external hollow structure includes: and the hollowed forefoot sole is complementary with the foot sole incomplete part in the inner half-foot main body and is used as the metatarsophalangeal joint part of the whole half-foot prosthesis.

In an embodiment of the present application, the inner half-foot main body and the outer hollow structure are obtained by performing 3D printing on foot size data obtained by optically scanning a foot of a patient.

In an embodiment of the present application, the materials used in the 3D printing technology include: any one of polyurethane, polylactic acid, nylon plastic, photosensitive resin, silica gel, rubber, latex, ABS plastic, PVC plastic, organic silicon resin and propenyl resin.

In summary, the present application provides a 3D printing biped prosthesis, the biped prosthesis includes: an inner half-foot body for wrapping and carrying a patient's foot; the outer hollow structure is coated on the foot surface of the inner half-foot main body; and the supporting connecting part is arranged between the inner half-foot main body and the outer hollow structure.

The following beneficial effects are achieved:

the method can be used for patients with congenital half-foot or partial-foot amputation, the data model of the foot anatomical structure is obtained by optical scanning, and the data model is customized and accurately designed according to the foot anatomical structure of the patient, so that the foot of the patient is more fitted, the patient feels comfortable to wear, the compliance is good, and the 3D printing is adopted, so that the time consumption is relatively short, the materials are saved, and the labor cost and the time consumption are saved; simultaneously, this application half-foot artificial limb top adopts hollow out construction design, possess ventilative light and handy characteristics, and the patient walks more stably after penetrating shoes. In addition, the foot compensation and prevention correction device can also play a role in foot compensation and prevention correction, and prevent other joint parts of a patient from being diseased due to unstable stress of the foot.

Drawings

Fig. 1 is a schematic structural diagram of a 3D printed prosthetic half-foot according to an embodiment of the present application.

Fig. 2 is a schematic structural view of an inner body of a half-foot according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an external hollow structure in an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only schematic and illustrate the basic idea of the present application, and although the drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation, the type, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complex.

Throughout the specification, when a part is referred to as being "connected" to another part, this includes not only a case of being "directly connected" but also a case of being "indirectly connected" with another element interposed therebetween. In addition, when a certain part is referred to as "including" a certain component, unless otherwise stated, other components are not excluded, but it means that other components may be included.

The terms first, second, third, etc. are used herein to describe various elements, components, regions, layers and/or sections, but are not limited thereto. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the scope of the present application.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," and/or "comprising," when used in this specification, specify the presence of stated features, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions or operations are inherently mutually exclusive in some way.

Aiming at the defects that the existing half-foot artificial limb has large model error and long consumed time, and the product has large size, poor sealing property, poor air permeability and the like compared with a side foot. The application provides a 3D prints half-foot artificial limb obtains the patient through optical scanning and remains foot and normal foot shape and size of a dimension data, for half-foot amputation's patient custom-made half-foot artificial foot, the laminating degree is high, carries out the preparation of net hollow out construction, and ventilation is good.

Fig. 1 shows a schematic structural diagram of a 3D printed prosthetic half-foot in an embodiment of the present application. As shown, the bipedal prosthesis comprises: inside half sufficient main part 1, outside hollow structure 2 and support connecting portion 3.

In one embodiment of the present application, the inner body half 1 is used for covering and carrying the foot stump of a patient.

Referring to fig. 2, a schematic structural view of an inner body of a half-foot in an embodiment of the present application is shown. As shown, the inner semi-foot body 1 comprises:

the structure of the half sole 11 is designed according to the anatomical structure of the foot of the patient and the sole pressure data, so that the half sole can fit the actual size of the foot of the patient, and is more comfortable and fit.

The foot stump 12 is designed correspondingly according to the shape and size of the foot stump of the patient, can be attached to the foot stump of the patient and plays a role in stabilizing.

Heel fixed part 13, its structure designs according to patient's heel actual shape size for paste with fixed ankle and shank, play laminating and fixed effect, it is more stable when letting the wearing person walk.

Wherein, the heel fixing part 13 is provided with a binding band 16; specifically, the two sides of the top end of the heel fixing part 13 are respectively provided with a bandage opening 17 on the forward extending part, which is 1 on the left side and the right side, such as 1.5cm high and 0.5cm wide, and can pass through the bandage 16 to fix the lower leg of the patient, so as to play the roles of fixing and preventing falling off, and can play the roles of preventing and correcting foot deformity when being worn in the shoe, and supporting, stabilizing and improving functions.

Instep support 14, with half sole 11 forms accommodation space, by sole stub 12 is connected to heel fixed part 13 forms the seal at sole stub 12, has constituted the accommodation space that is used for the incomplete foot of patient to dress. Wherein the support connection part 3 is provided on the instep support 14.

The left, right, and upper sides of the instep support 14 are left with a large area of a hollow portion, and other solid portions are provided with a plurality of ventilation holes 15, thereby providing a ventilation effect to the maximum extent without lowering the structural stability.

For example, the diameter of the air holes 15 can be 5mm, 5 air holes can be arranged on the left side and the right side, 1 air hole is arranged on the front side and the rear side, the shape of the air hole is hollow, and the diameter of the air hole is 5mm, so that the ventilation effect is achieved, and the structural stability is not reduced.

Wholly speaking, inside half-foot main part 1 mainly regards as the cladding and bears the main part of patient's incomplete foot, and every patient's incomplete foot size of size shape of its structure laminating, its supporting role of half-foot sole 11, sole stub 12 and the laminating of patient's incomplete foot structure, heel fixed part 13 are used for with the shank fixed, instep supporter 14 from the instep to the incomplete foot parcel to there is fine ventilation effect, thereby makes inside half-foot main part 1 wholly not only laminates every patient's incomplete foot, but also very high the stability of dressing the walking.

In an embodiment of the present application, the outer hollow structure 2 is coated on the foot surface of the inner half-foot main body 1.

Fig. 3 is a schematic structural diagram showing an external hollow structure in the embodiment of the present application. As shown in the figure, the external hollow structures 2 are all designed to be honeycomb hollow structures; the top opening of the external hollow structure 2 is U-shaped, the rear end is disconnected, and hollow nets are arranged on two sides. For example, the diameter of the hollow structure is 3-5mm, so that the weight is reduced, the material is saved, and the good ventilation effect is achieved, so that the patient can wear the clothes comfortably

In this application, the front end of the external hollow structure 2 includes: a hollowed out anterior sole 21, complementary to the sole stump in said inner body 1, to act as the metatarsophalangeal joint of the entire prosthesis. The foot sole adopts a hollow structure, is ventilated and radiated, can share the pressure of the sole of the foot, and has the functions of prevention and correction.

In brief, the hollowed front sole 21 has the same size as the normal foot, and the left foot and the right foot can be put into the shoes with the same size without sliding and the shoe heads becoming collapsed, so that the pressure contact area of the sole is increased, and the function compensation of the foot is realized.

In an embodiment of the present application, the supporting connection portion 3 is disposed between the inner half-foot main body 1 and the outer hollow structure 2, and plays a role of supporting connection.

Preferably, the support connection part 3 is a plurality of small cylinders respectively arranged at the left and right sides. For example, the support connection portion 3 is 6 small cylinders, 3 each on the left and right sides, is located between the inner half-foot main body 1 and the outer hollow structure 2, and can provide a support effect for the connection between the inner half-foot main body 1 and the outer hollow structure 2.

In an embodiment of the present application, the front end of the external hollow structure 2 is provided with a front sole structure 4, and the size and shape of the front sole structure 4 are consistent with those of a healthy side foot, so that the shoe can be prevented from collapsing and slipping when penetrating into a shoe.

In an embodiment of the present application, the inner half-foot body 1 and the outer hollow structure 2 are obtained by performing 3D printing on foot size data obtained by optically scanning a foot of a patient.

In a plurality of embodiments, the inner half-foot main body 1, the outer hollow structure 2, the hollow front sole 21, the front sole structure 4 and the air holes 15 respectively scan the residual foot and the normal foot of the patient through a three-dimensional scanner to obtain relevant foot size data, and then 3D printing is performed after design. Three-dimensional scanning image data of the foot of the patient is acquired in advance, for example, the three-dimensional scanning image data is acquired through an X-ray film and CT, and the sizes and shapes of the residual foot and the normal foot can be captured through an optical three-dimensional scanner, so that the space coordinates of the surface of the foot are acquired. Compared with the traditional customization process, the optical three-dimensional scanning collection is simple, convenient and accurate, the non-contact optical scanner is harmless to the human body, no radiation exists, high-precision point cloud data can be collected, the body can be tailored, and the feet can be scanned accurately. Then three-dimensional modeling software is introduced, the residual feet of the patient are depicted, the size of the front sole is compensated, and finally, a computer is used for modeling design and 3D printing, so that a better treatment effect can be achieved. The individual design can be carried out according to the incomplete foot condition of different patients, so that the foot size of the patients can be completely fitted, and the individual, precise and customized treatment can be realized. The size of the half-foot artificial limb formed by 3D printing in the mode can accord with the anatomical characteristics of the foot of the patient, the patient wears the artificial limb comfortably, discomfort does not exist, and the compliance is high.

In one or more embodiments, the 3D printing technique uses materials including: any one of polyurethane, polylactic acid, nylon plastic, photosensitive resin, silica gel, rubber, latex, ABS plastic, PVC plastic, organic silicon resin and propenyl resin.

In short, the hardness and softness of the material adopted by 3D printing are good, and the skin of the foot is protected from being squeezed and abraded while the foot is fixed.

In summary, the present application provides a 3D printing biped prosthesis, the biped prosthesis includes: an inner half-foot body for wrapping and carrying a patient's foot; the outer hollow structure is coated on the foot surface of the inner half-foot main body; and the supporting connecting part is arranged between the inner half-foot main body and the outer hollow structure.

In a whole, the 3D printing half-foot artificial limb can be used for patients with congenital half-feet or partial-foot amputation, compared with the traditional half-foot artificial limb, the 3D printing half-foot artificial limb adopts optical scanning to obtain a foot anatomical structure data model, and is personalized, customized and accurately designed according to the foot anatomical structure of the patient, so that the foot of the patient is more fitted, the patient is comfortable to wear, the compliance is better, and the 3D printing is adopted, so that the time consumption is relatively short, the materials are saved, and the labor cost and the time consumption are saved; simultaneously, this application half-foot artificial limb top adopts hollow out construction design, possess ventilative light and handy characteristics, and the patient walks more stably after penetrating shoes. In addition, this application 3D prints half-footed artificial limb and can also play the compensation of a foot and prevent the correction effect, prevents that the patient from arousing other joint positions because of the foot atress is unstable and appearing the pathological change.

The application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims (8)

1. A3D printed biped prosthesis, the biped prosthesis comprising:

an inner half-foot body for wrapping and carrying a patient's foot;

the outer hollow structure is coated on the foot surface of the inner half-foot main body;

and the supporting connecting part is arranged between the inner half-foot main body and the outer hollow structure.

2. The 3D printed semi-foot prosthesis according to claim 1, wherein the front end of the external hollow structure is provided with a front foot crotch structure, and the size and the shape of the front foot crotch structure are consistent with those of a healthy side foot.

3. The 3D printed prosthetic half-foot according to claim 1, wherein the inner half-foot body comprises:

a plantar half of the foot, the structure of which is designed according to the anatomical structure of the patient's foot and plantar pressure data;

the structure of the foot stump is correspondingly designed according to the shape and the size of the foot stump of the patient;

the heel fixing part is structurally designed according to the actual shape and size of the heel of the patient and is used for attaching and fixing the ankle and the shank; the heel fixing part is provided with a binding band;

the instep support body and the half sole form a containing space and is connected to the heel fixing part through the sole stub; wherein the support connecting part is arranged on the instep support body;

the air holes are formed in the instep support.

4. A 3D printed prosthetic half-foot according to claim 1, wherein the support connection portion is a plurality of small cylinders provided on the left and right sides, respectively.

5. The 3D printed prosthetic half-foot according to claim 1, wherein the external openwork structure is a honeycomb openwork structure; the top opening of the external hollow structure is U-shaped, the rear end of the external hollow structure is disconnected, and hollow nets are arranged on two sides of the external hollow structure.

6. The 3D printed prosthetic half-foot according to claim 5, wherein the front end of the outer openwork structure comprises: and the hollowed forefoot sole is complementary with the foot sole incomplete part in the inner half-foot main body and is used as the metatarsophalangeal joint part of the whole half-foot prosthesis.

7. A 3D printed prosthetic half-foot according to claim 1, wherein the inner half-foot body and the outer hollowed out structure are 3D printed with foot dimension data obtained by optical scanning of a patient's foot.

8. The 3D printed prosthetic half-foot according to claim 1, wherein the 3D printing technique uses materials comprising: any one of polyurethane, polylactic acid, nylon plastic, photosensitive resin, silica gel, rubber, latex, ABS plastic, PVC plastic, organic silicon resin and propenyl resin.

Images