CN111437085A

CN111437085A - Artificial limb constant-temperature receiving cavity and manufacturing method thereof

Info

Publication number: CN111437085A
Application number: CN202010282920.2A
Authority: CN
Inventors: 李晓堂; 付卫来; 崔邵芳; 庞作宁
Original assignee: Anyang Beiruisi Medical Equipment Co ltd
Current assignee: Anyang Beiruisi Medical Equipment Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-07-24

Abstract

The utility model provides an artificial limb constant temperature accepting chamber, the accepting chamber wall in inlay and be equipped with the heating wire, outside the both ends of heating wire were located the accepting chamber, still inlay in the accepting chamber wall and be equipped with the thermocouple, at the outer fixedly connected with PCB controller of accepting chamber wall, the thermocouple is connected on the PCB controller, at the outer fixedly connected with battery that still accepts chamber wall, the heating wire passes through the PCB controller and links to each other with the battery, the battery is heating wire, PCB controller, thermocouple power supply. A method for manufacturing a constant-temperature socket of a prosthetic limb comprises the following steps: (1) taking and modifying the model to obtain a gypsum male model; (2) the method comprises the steps of (1) resin receiving cavity vacuum forming, (3) cutting and polishing, and (4) installing a heating device. The invention reduces the complication generated by the stump when the patient wears the prosthetic socket in cold weather, heats the stump, has the functions of expanding blood vessels, improving local blood circulation and promoting local metabolism, and is beneficial to the recovery of diseases.

Description

Artificial limb constant-temperature receiving cavity and manufacturing method thereof

Technical Field

The invention relates to an artificial limb (artificial limb) socket, in particular to a constant-temperature socket for an artificial limb (artificial limb), belonging to the technical field of rehabilitation medical rehabilitation engineering.

Background

In recent years, with the development of modern medical rehabilitation engineering science and technology, a great number of amputees caused by various diseases, cancers, vascular diseases, trauma, traffic accidents and the like have made higher demands on the assembly of artificial limbs (artificial limbs). Prostheses are very important as aids for the rehabilitation of amputees or incomplete stumps to replace artificial limbs that have lost part of the function of the limb, restoring the patient to a certain self-care and working capacity. The receiving cavity is used as the most important component of the artificial limb, is directly contacted with the residual limb to accommodate the residual limb, and plays roles of bearing weight, controlling the motion of the artificial limb and the like. Whether the socket structure fits the residual limb will directly affect the performance of the function of the prosthesis and the wearing comfort of the patient.

The existing artificial limb has a lower limb receiving cavity; the plug-in type receiving cavity, the overall contact receiving cavity, the suction type receiving cavity and the like are divided according to parts; the ankle disconnection receiving cavity, the calf receiving cavity, the knee disconnection receiving cavity, the thigh receiving cavity, the hip disconnection receiving cavity and the upper limb prosthesis are arranged according to parts; a wrist off-off receiving cavity, a forearm receiving cavity, an elbow off-off receiving cavity, an upper arm receiving cavity, a shoulder off-off receiving cavity and a scapular thoracic cavity receiving cavity;

wherein, the shank receiving cavity is of the type; 1. a traditional artificial leg receiving cavity 2, a ligament bearing receiving cavity, a PTB (percutaneous transluminal bungs) receiving cavity, a PTS (partial transshipment) receiving cavity, a KBM (KBM) receiving cavity, a 3 and TSB (total contact sorption type) receiving cavity, and a 4 and PTK (percutaneous transshipment) receiving cavity.

The thigh receiving cavity is of a type; 1. an insertion type thigh receiving cavity, a traditional insertion type receiving cavity and an insertion type full-contact type receiving cavity; 2. sorption type receiving cavity, CAT-CAM ischial containing receiving cavity, ischial bearing receiving cavity, Flexible (Flexible) receiving cavity quadrilateral receiving cavity, ISNY receiving cavity and CAT/CAM receiving cavity.

The receiving cavity of the artificial limb does not have a constant-temperature heating function, and when a patient wears the artificial limb in cold weather, the patient feels very uncomfortable due to the fact that the receiving cavity is cool. When the artificial limb is worn and used, muscle contraction, reduction of blood circulation and synovial fluid secretion and poor compliance of tissues around joints (including muscles, ligaments and the like) are caused by cold, so that many people feel complications such as muscle soreness, joint stiffness, arthritis pain and the like. Which in turn affects the comfort of the socket and the functioning of the prosthesis.

Disclosure of Invention

The invention aims to overcome the problems existing in wearing and using of the existing artificial limb socket and provides an artificial limb constant-temperature socket and a manufacturing method thereof.

In order to realize the purpose of the invention, the following technical scheme is adopted: the utility model provides an artificial limb constant temperature accepting chamber, the accepting chamber wall in inlay and be equipped with the heating wire, outside the both ends of heating wire were located the accepting chamber, still inlay in the accepting chamber wall and be equipped with the thermocouple, at the outer fixedly connected with PCB controller of accepting chamber wall, the thermocouple is connected on the PCB controller, at the outer fixedly connected with battery that still accepts chamber wall, the heating wire passes through the PCB controller and links to each other with the battery, the battery is heating wire, PCB controller, thermocouple power supply.

Further, the method comprises the following steps of; the electric heating wire is encircled in the receiving cavity wall.

Further, the method comprises the following steps of; a high temperature resistant plastic pipe is embedded in the wall of the receiving cavity in a surrounding way, and the electric heating wire is arranged in the high temperature resistant plastic pipe in a penetrating way.

Further, the method comprises the following steps of; the battery be the battery, be provided with the USB interface that charges with the battery matching.

A method for manufacturing a constant-temperature socket of a prosthetic limb comprises the following steps:

(1) obtaining the plaster male type by taking the type of the amputated patient and modifying the type;

(2) vacuum forming of a resin receiving cavity: measuring the length and girth of the gypsum male mold, welding two PVC film sleeves, rolling a wet towel for later use, checking the pressure of vacuum equipment, and judging whether the vacuum pipe connection leaks air or not; sleeving a layer of silk stockings on the plaster male mold, sleeving a first PVC film sleeve on the plaster male mold, isolating water vapor, sealing the first PVC film sleeve, and then vacuumizing to prevent the first PVC film sleeve from leaking air; four layers of yarn sleeves are sleeved on the plaster male mold, and the lines of the yarn sleeves are natural without folds after the gypsum male mold is sleeved; coiling a high-temperature plastic pipe internally coated with a vaseline grease steel wire guide cable on the plaster male mold from bottom to top, avoiding a part to be cut, and exposing two ends of the high-temperature plastic pipe of the steel wire guide cable at the uppermost end of the plaster male mold; fixing a thermocouple at the popliteal fossa of the yarn sleeve or a plurality of soft tissues embodied in a male mode by using a double-sided adhesive tape, extending the lead end of the thermocouple to penetrate through a high-temperature plastic pipe, directly and smoothly adhering the thermocouple to the surface of the yarn sleeve, extending the lead end to the upper side, cutting a hole on the prepared two layers of yarn sleeves, sleeving the two layers of yarn sleeves, penetrating the high-temperature plastic pipe of a steel wire guide cable and the high-temperature plastic pipe of the thermocouple lead to the hole, remaining the high-temperature plastic pipe and the high-temperature plastic pipe of the wire guide cable outside and above the wire guide cable, installing artificial limb accessories on the upper; cutting a hole on the prepared six layers of yarn sleeves, sleeving the six layers of yarn sleeves, remaining the high-temperature plastic pipe of the steel wire guide cable above the outside through the hole, sleeving a second PVC film sleeve, wherein the length of the high-temperature plastic pipe of the steel wire guide cable is higher than that of the PVC film sleeve, and preventing vacuum negative pressure resin from flowing in; uniformly mixing acrylic resin and a curing agent, pouring the mixture between two layers of PVC plastic films for vacuumizing when the resin has heat in reaction, uniformly expelling the resin, expelling bubbles, then expelling the redundant resin to the front end, and tying the mixture well by using a rope; after the resin is heated for the second time, the vacuum pump is turned off after cooling, and if the temperature is too high in the resin molding process, alcohol can be used for cooling;

(3) cutting and polishing: marking the mouth shape of the receiving cavity by using a marking pen, then starting cutting along a marking line by using a saw, smashing off the plaster inside the receiving cavity after taking off the model, removing the PVC film sleeve on the outer layer, uniformly polishing the rough surface, and chamfering the mouth shape of the receiving cavity;

(4) installing a heating device: the heating wire is fixedly connected to the steel wire guide cable, the pull guide cable pulls the heating wire to penetrate into the high-temperature plastic pipe orifice, and the thermocouple, the PCB controller, the switch, the lithium battery and the USB charging interface are connected to the outside of the high-temperature plastic pipe orifice.

The invention has the positive and beneficial technical effects that: the complication that the stump produces when the patient wears the prosthetic socket because of the cold weather is reduced, the heating stump has the functions of expanding blood vessels, improving local blood circulation and promoting local metabolism, and the disease recovery is benefited. The heating wire is convenient to install in a conduit mode, the heating wire is convenient to damage and replace on the adaptive receiving cavity, and the USB charging interface is designed to enable a patient to go out and also be charged at any time to ensure that the receiving cavity is warmed at any time.

Drawings

FIG. 1 is a schematic view of a high temperature plastic pipe wound around a gypsum male mold.

Fig. 2 is a schematic view of the socket after installation of the heating device.

Detailed Description

In order to more fully explain the implementation of the present invention, the implementation examples of the present invention are provided, which are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail in connection with the accompanying drawings, in which: 1: gypsum male type; 2. a second PVC film sleeve; 3: a high temperature resistant plastic tube; 4. a thermocouple; 5: a prosthetic fitting; 6: a receiving cavity; 7: an electric heating wire; 8: a PCB controller; 9: a switch; 10: a battery; 11: and a USB charging interface.

As shown in the attached drawing, the artificial limb constant-temperature socket is characterized in that a heating wire 7 is embedded in the socket wall, a high-temperature-resistant plastic pipe 3 is embedded in the socket wall in a surrounding manner, the heating wire penetrates through the high-temperature-resistant plastic pipe, two ends of the heating wire are positioned outside the socket, a thermocouple 4 is further embedded in the socket wall, the outer end of a lead of the thermocouple is positioned outside the socket, a PCB controller 8 is fixedly connected outside the socket wall, the thermocouple is connected onto the PCB controller, a battery 10 is fixedly connected outside the socket wall, the heating wire is connected with the battery through the PCB controller, and the battery is an electric heating wire, the PCB controller and the thermocouple. The battery be the battery, be provided with USB interface 11 that charges with the battery matching, be provided with switch 9 at the battery dish.

(2) vacuum forming of a resin receiving cavity: measuring the length and girth of the gypsum male die 1, welding two PVC film sleeves, rolling a wet towel for later use, checking the pressure of vacuum equipment, and judging whether the vacuum pipe connection leaks air or not; sleeving a layer of silk stockings on the plaster male mold 1, sleeving a first PVC film sleeve on the plaster male mold, isolating water vapor, sealing the first PVC film sleeve, and then vacuumizing to prevent the first PVC film sleeve from leaking air; four layers of yarn sleeves are sleeved on the plaster male mold 1, and the lines of the sleeved yarn sleeves are natural without folds; coiling a high-temperature plastic pipe 3 internally coated with a vaseline grease steel wire guide cable on the plaster male mold from bottom to top, avoiding a part to be cut, and exposing two ends of the high-temperature plastic pipe 3 of the steel wire guide cable at the uppermost end of the plaster male mold 1; fixing a thermocouple 4 at the popliteal fossa of the yarn sleeve or at a plurality of soft tissues embodied in a male mode by using a double faced adhesive tape, lengthening the lead end of the thermocouple 4, threading a high-temperature plastic pipe, directly and smoothly sticking the thermocouple 4 on the surface of the sand sleeve, extending the sand sleeve to the upper part, cutting a tiny hole on the prepared two layers of sand sleeves, sleeving the two layers of sand sleeves, enabling the high-temperature plastic pipe 3 of a steel wire guide cable and the high-temperature plastic pipe of the lead of the thermocouple 4 to penetrate through the hole and stay at the outer upper part, and installing an artificial limb accessory 5 to the line at the upper end of the model sleeved with the sand sleeves so as to be; cutting a tiny hole on the prepared six-layer sand sleeve, then sleeving the six-layer yarn sleeve, leaving the high-temperature plastic pipe 3 of the steel wire guide cable above the outside through the hole, sleeving the second PVC film sleeve 2, wherein the length of the high-temperature plastic pipe 3 of the steel wire guide cable is higher than that of the second PVC film sleeve, and preventing vacuum negative-pressure resin from flowing in; uniformly mixing acrylic resin and a curing agent, pouring the mixture between two layers of PVC plastic films for vacuumizing when the resin has heat in reaction, uniformly expelling the resin, expelling bubbles, then expelling the redundant resin to the front end, and tying the mixture well by using a rope; after the resin is heated for the second time, the vacuum pump is turned off after cooling, and if the temperature is too high in the resin molding process, alcohol can be used for cooling;

(3) cutting and polishing: marking the mouth shape of the receiving cavity 6 by using a marking pen, then starting cutting along a marking line by using vibration, taking down the model, smashing off the plaster male mold 1 in the receiving cavity 6, removing the PVC film sleeve on the outer layer, uniformly polishing the rough surface, and chamfering the mouth shape of the receiving cavity 6;

(4) installing a heating device: the electric heating wire 7 is welded on the steel wire guide cable, the guide cable is pulled into the electric heating wire to penetrate into the high-temperature plastic pipe 2, and the thermocouple 4, the PCB controller 8, the switch 9, the lithium battery 10 and the USB charging interface 11 are connected outside the electric heating wire. The thermocouple 4 is used for sensing the temperature inside the receiving cavity 6; the electric heating wire 7 is used for heating the receiving cavity; the PCB controller 8 is used for adjusting the temperature of the heating wire to keep the constant temperature of the receiving cavity 6; the switch 9 is used for controlling the on and off of the circuit; the lithium battery 10 is used for heating the heating wire 7; the USB charging interface 11 is used for facilitating charging of the lithium battery 10. The device of the integral heating control part can select the installation position according to the length of the residual limb of the patient, and the appearance of the artificial limb is not influenced. The residual limb may be designed on the inside of the socket if it is relatively long and on the underside of the socket if it is relatively short.

In the invention, the surface temperature of the electric heating wire with the power of 6-8W can reach about 45-55 ℃;

capacity of lithium battery: 12v10 ah;

electric heating wire: 12 ohms per meter;

2 meters of heating wires are coiled in the receiving cavity, so that the resistance of the heating wires is 2 x 12=24 ohms;

heating wire power = (voltage) ÷ resistance =12 × 24= 6W;

battery time = (voltage × battery capacity) ÷ heating wire power =12 × 10 ÷ 6=20 hours;

the battery can be powered continuously for 20 hours at a constant temperature of 25 ℃ by controlling the temperature by the controller.

After the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and it is intended that all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention shall fall within the technical scope of the present invention, and the present invention shall not be limited to the embodiments illustrated in the description. The technique of the present invention can be designed in all upper and lower limb prosthetic sockets.

Claims

1. A prosthetic thermostatic socket, characterized by: the heating wire is embedded in the wall of the receiving cavity, two ends of the heating wire are positioned outside the receiving cavity, the thermocouple is further embedded in the wall of the receiving cavity, the PCB controller is fixedly connected outside the wall of the receiving cavity, the thermocouple is connected to the PCB controller, the battery is fixedly connected outside the wall of the receiving cavity, the heating wire is connected with the battery through the PCB controller, and the battery supplies power to the heating wire, the PCB controller and the thermocouple.

2. A prosthetic thermostatic socket according to claim 1, wherein: the electric heating wire is encircled in the receiving cavity wall.

3. A prosthetic thermostatic socket according to claim 1, wherein: a high temperature resistant plastic pipe is embedded in the wall of the receiving cavity in a surrounding way, and the electric heating wire is arranged in the high temperature resistant plastic pipe in a penetrating way.

4. A prosthetic thermostatic socket according to claim 1, wherein: the battery be the battery, be provided with the USB interface that charges with the battery matching.

5. A method for manufacturing a constant-temperature socket of a prosthetic limb is characterized by comprising the following steps: