阅读说明：本技术 一种可吸收骨折固定材料热塑器 (Absorbable fracture fixation material thermoplastic molding device ) 是由 王平山 毛兆虎 于 2019-10-31 设计创作，主要内容包括：本发明涉及一种可吸收骨折固定材料热塑器,包括圆柱形的输送室、轴接在输送室内部的转轴、固接在转轴上的螺旋输送片以及驱动转轴旋转的电机,所述螺旋输送片沿外边缘固接有一条与输送室内壁贴合的弹性胶条,所述输送室的进液侧和出液侧分别设有进液口和出液口,出液口上装有注射管,输送室靠近出液口的一端直径变小,所述输送室的上方装有与进液口连通的加热室,加热室内装有加热管,所述输送室外壁上装有保温加热片,通过将需要加热的物料放置到加热室中,并通过加热管加热,融化的物料通过进液口流入输送室中,在输送室中冷却至玻璃化温度,最终通过螺旋输送片驱动物料向出液口方向输送,并从注射管中流出。(The invention relates to an absorbable fracture fixation material thermoplastic molding device, which comprises a cylindrical conveying chamber, a rotating shaft, a spiral conveying sheet and a motor, wherein the rotating shaft is connected inside the conveying chamber in a shaft mode, the spiral conveying sheet is fixedly connected to the rotating shaft in a shaft mode, the motor drives the rotating shaft to rotate, an elastic rubber strip is fixedly connected to the inner wall of the conveying chamber along the outer edge of the spiral conveying sheet, a liquid inlet and a liquid outlet are formed in the liquid inlet side and the liquid outlet side of the conveying chamber respectively, an injection pipe is arranged on the liquid outlet, the diameter of one end, close to the liquid outlet, of the conveying chamber is reduced, a heating chamber communicated with the liquid inlet is arranged above the conveying chamber, a heating pipe is arranged in the heating chamber, a heat preservation heating sheet is arranged on the outer wall of the conveying chamber, materials to be heated are placed in the heating chamber, heated through the heating pipe, the melted materials, and out of the syringe.)

1. An absorbable fracture fixation material thermoplastic device, which is characterized in that: including columniform transport chamber (1), coupling in transport chamber (1) inside pivot (3), the rigid coupling carry piece (2) and drive pivot (3) rotatory motor (9) in pivot (3), spiral transport piece (2) have one along the outward flange rigid coupling with transport chamber (1) inner wall laminating elasticity adhesive tape (20), the feed liquor side and the play liquid side of transport chamber (1) are equipped with inlet (6) and liquid outlet (5) respectively, are equipped with injection tube (8) on liquid outlet (5), and the one end diameter that is close to liquid outlet (5) of transport chamber (1) diminishes, the top of transport chamber (1) is equipped with heating chamber (15) with inlet (6) intercommunication, is equipped with heating pipe (16) in heating chamber (15), be equipped with heat preservation heating piece (4) on transport chamber (1) outer wall.

2. The absorbable fracture fixation material thermoplastic device of claim 1, wherein: the end face of the outer edge of the spiral conveying piece (2) is provided with a sinking groove along the length direction, and the elastic rubber strip (20) is fixedly connected with two sides of the spiral conveying piece (2) and extends into the sinking groove.

3. The absorbable fracture fixation material thermoplastic device of claim 1, wherein: conveying chamber (1) outside is equipped with and is carried chamber (1) and heat preservation heating plate (4) casing (7) including parcel, and inboard temperature sensor (11) are equipped with to the position that is close to liquid outlet (5) in casing (7), and outside temperature sensor (12) are equipped with to the position of keeping away from liquid outlet (5) and heat preservation heating plate (4) in the casing.

4. The absorbable fracture fixation material thermoplastic device of claim 1, wherein: injection pipe (8) are connected with liquid outlet (5) through the screw thread, are provided with one section elasticity portion of bending (801) on injection pipe (8), and the cover has spring (802) on elasticity portion of bending (801).

5. The absorbable fracture fixation material thermoplastic device of claim 1, wherein: the liquid inlet (6) is communicated to the bottom of the heating chamber (15), and the liquid inlet (6) is provided with an electromagnetic valve (14).

6. The absorbable fracture fixation material thermoplastic device of claim 1, wherein: the heating pipe (16) is spiral and is provided with an upper layer and a lower layer.

7. The absorbable fracture fixation material thermoplastic device of claim 6, wherein: the equal rigid coupling in bottom surface of every layer of heating pipe (16) has a baffle (17), and it has a plurality of drippage holes to open on baffle (17), and the drippage hole staggered arrangement on top baffle (17) and below baffle (17), heating pipe (16) and baffle (17) laminating department are provided with the fillet.

8. The absorbable fracture fixation material thermoplastic device of claim 3, wherein: and an irradiation lamp (13) is arranged on the end surface of the shell body close to the injection tube (8).

Technical Field

The invention relates to the field of fluid delivery, in particular to an absorbable fracture fixation material thermoplastic device.

Background

PLGA (polylactic-co-glycolic acid) is a degradable functional polymer organic compound, has good biocompatibility, non-toxicity, and good properties of encapsulation and film formation, the degradation products of PLGA are lactic acid and glycolic acid, and the two products are byproducts of human metabolic pathways at the same time, so it has no toxic side effect when applied in medicine and biological materials, and thus it is widely applied in the biomedical field, such as surgical sutures, internal fracture fixation materials, tissue repair materials, etc., its glass transition temperature is between 40-70 ℃, melting point is between 135 ~ 200 ℃, in internal fracture fixation surgery, PLGA heated to be vitrified needs to be injected into the internal fracture site.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the absorbable fracture fixation material thermoplastic device which is safe, reliable and convenient to operate.

The invention is realized by the following technical scheme, and provides an absorbable fracture fixation material thermoplastic molding device, which comprises a cylindrical conveying chamber, a rotating shaft connected inside the conveying chamber in a shaft mode, a spiral conveying piece fixedly connected to the rotating shaft and a motor driving the rotating shaft to rotate, wherein an elastic rubber strip attached to the inner wall of the conveying chamber is fixedly connected to the spiral conveying piece along the outer edge, a liquid inlet and a liquid outlet are respectively arranged on the liquid inlet side and the liquid outlet side of the conveying chamber, an injection pipe is arranged on the liquid outlet, the diameter of one end, close to the liquid outlet, of the conveying chamber is reduced, a heating chamber communicated with the liquid inlet is arranged above the conveying chamber, a heating pipe is arranged in the heating chamber, and a heat.

The material to be heated is placed in the heating chamber, the heating pipe is used for heating, the melted material flows into the conveying chamber through the liquid inlet, is cooled to the vitrification temperature in the conveying chamber, keeps the vitrification temperature through the heat preservation heating sheet, and is finally conveyed towards the liquid outlet direction through the spiral conveying sheet and flows out of the injection pipe.

Preferably, the end face of the outer edge of the spiral conveying piece is provided with a sinking groove along the length direction, and the elastic rubber strip is fixedly connected with two sides of the spiral conveying piece and extends into the sinking groove. Through the heavy groove that this scheme set up, can increase the area of contact of elasticity adhesive tape and auger delivery piece, increase the rigid coupling intensity of elasticity adhesive tape and auger delivery piece.

As optimization, a shell which wraps the conveying chamber and the heat-preservation heating sheet is arranged outside the conveying chamber, an inner side temperature sensor is arranged at a position, close to the liquid outlet, in the shell, and an outer side temperature sensor is arranged at a position, far away from the liquid outlet and the heat-preservation heating sheet, in the shell. The casing in this scheme plays the thermal-insulated effect of heat preservation, can prevent that the heat preservation heating plate from scalding operating personnel, and inboard temperature sensor is used for detecting the temperature of liquid outlet department, and outside temperature sensor is used for detecting the minimum temperature in the casing.

Preferably, the injection tube is connected with the liquid outlet through threads, a section of elastic bending part is arranged on the injection tube, and a spring is sleeved on the elastic bending part. The elasticity in this scheme is bent the portion and can prevent that the vibrations of thermoplastic ware from transmitting the tip of syringe, can also be used for changing the angle between syringe tip and the transport chamber, and the operation of being convenient for, the spring is used for protecting elasticity portion of bending.

Preferably, the liquid inlet is communicated to the bottom of the heating chamber, and an electromagnetic valve is arranged on the liquid inlet. The liquid inlet is communicated to the bottom of the heating chamber, so that the liquid in the heating chamber can flow into the conveying chamber from the liquid inlet, and the electromagnetic valve is used for controlling the opening and closing of the liquid inlet.

Preferably, the heating pipe is spiral and is provided with an upper layer and a lower layer. The heating pipe is spiral and is provided with two-layer about being provided with, is convenient for heat the material in the heating chamber.

As optimization, the bottom surface of each layer of heating pipe is fixedly connected with a baffle, the baffle is provided with a plurality of dripping holes, the dripping holes on the upper baffle and the lower baffle are arranged in a staggered manner, and the heating pipe is provided with a fillet at the joint with the baffles. The baffle in this scheme is used for accepting solid material, and the material after melting falls from the hole that drips, and the hole staggered arrangement that drips on top baffle and the below baffle can prevent that solid material from falling to the inlet, and heating pipe and baffle laminating department are provided with the fillet, prevent that the material from piling up in the crack of heating pipe and baffle laminating department.

Preferably, the end face of the shell close to the injection tube is provided with a radiation lamp. The irradiation lamp in the scheme is used for illuminating the operation part during operation.

The invention has the beneficial effects that: according to the absorbable fracture fixation material thermoplastic molding device, materials to be heated are placed in the heating chamber and heated through the heating pipe, the melted materials flow into the conveying chamber through the liquid inlet, are cooled to the vitrification temperature in the conveying chamber, and are finally conveyed towards the liquid outlet through the driving of the spiral conveying piece and flow out of the injection pipe.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the syringe configuration of the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of the present invention;

FIG. 4 is a cross-sectional view taken along plane B-B of the present invention;

FIG. 5 is a cross-sectional view of the spiral conveying sheet of the present invention taken along plane C-C;

shown in the figure:

1. conveying chamber, 2, spiral conveying piece, 3, pivot, 4, heat preservation heating piece, 5, liquid outlet, 6, inlet, 7, casing, 8, syringe, 9, motor, 10, sealing washer, 11, inboard temperature sensor, 12, outside temperature sensor, 13, irradiation lamp, 14, solenoid valve, 15, heating chamber, 16, heating pipe, 17, baffle, 18, feed inlet, 19, switch, 20, elasticity adhesive tape, 801, elasticity portion of bending, 802, spring.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 ~ 5, the absorbable fracture fixation material thermoplastic molding machine of the present invention comprises a cylindrical conveying chamber 1, a rotating shaft 3 coupled inside the conveying chamber 1, a spiral conveying sheet 2 fixedly connected to the rotating shaft 3, and a motor 9 for driving the rotating shaft 3 to rotate, wherein an elastic rubber strip 20 attached to the inner wall of the conveying chamber 1 is fixedly connected to the outer edge of the spiral conveying sheet 2, a sinking groove is formed in the end surface of the outer edge of the spiral conveying sheet 2 along the length direction, and the elastic rubber strip 20 is fixedly connected to two sides of the spiral conveying sheet 2 and extends into the sinking groove.

The motor 9 is a speed reducing motor, the output rotating speed is 10 ~ 60 rpm, the motor 9 is installed outside the conveying chamber 1 and is arranged at one end of the liquid inlet side, the rotating shaft 3 extends out of the conveying chamber 1 and is fixedly connected with the motor shaft, the position of the rotating shaft 3 penetrating out of the conveying chamber 1 is provided with a sealing ring 10, the outside of the motor is provided with a motor cover, and the motor cover is provided with a switch 19 for controlling the motor.

The liquid inlet side and the liquid outlet side of the conveying chamber 1 are respectively provided with a liquid inlet 6 and a liquid outlet 5, the liquid inlet 6 is arranged on the side surface of the liquid inlet side, the liquid inlet 6 is provided with an electromagnetic valve 14, and the electromagnetic valve 14 and the motor 9 are synchronously switched on and off.

Injection pipe 8 is equipped with on liquid outlet 5, injection pipe 8 is connected with liquid outlet 5 through the screw thread, is provided with one section elasticity portion of bending 801 on the injection pipe 8, elasticity portion of bending 801 is the silicone tube, and the cover has spring 802 on the elasticity portion of bending 801, and the one end diameter that conveying chamber 1 is close to liquid outlet 5 diminishes, and the external diameter of auger delivery piece diminishes in step.

A heating chamber 15 communicated with the liquid inlet 6 is arranged above the conveying chamber 1, the liquid inlet 6 is communicated to the bottom of the heating chamber 15, a heating pipe 16 is arranged in the heating chamber 15, a feeding port 18 is arranged at the top of the heating chamber 15, and a heat insulation layer is arranged outside the heating chamber 15, so that an operator can be prevented from being scalded.

The heating chamber 15 is vertically provided with an observation hole, and a transparent glass plate is arranged on the observation hole and can be used for observing the residual amount of the liquid in the heating chamber 15.

Heating pipe 16 is two-layer about the heliciform just is provided with, and the equal rigid coupling in bottom surface of every layer of heating pipe 16 has a baffle 17, and it has a plurality of drippage holes to open on the baffle 17, and the drippage hole staggered arrangement on baffle 17 of top and the below baffle 17, heating pipe 16 is provided with the fillet with baffle 17 laminating department.

And a heat-insulating heating sheet 4 is arranged on the outer wall of the conveying chamber 1.

Conveying chamber 1 outside is equipped with and is equipped with conveying chamber 1 and heat preservation heating plate 4 parcel including casing 7, and the position that is close to liquid outlet 5 in casing 7 is equipped with inboard temperature sensor 11, and the position that keeps away from liquid outlet 5 and heat preservation heating plate 4 in the casing is equipped with outside temperature sensor 12, be equipped with irradiation lamp 13 on the terminal surface of being close to injection syringe 8 on the casing.

When the material conveying device is used, a certain amount of solid materials are placed into the heating chamber 15 through the feeding hole 18, the power supply is switched on, the heating pipe 16 melts the materials and then flows to the bottom of the heating chamber 15, after the materials are completely melted, the electromagnetic valve 14 is opened, the melted materials flow into the conveying chamber 1, the conveying chamber 1 is kept stand for a certain time, the materials in the conveying chamber 1 are cooled to 50 ~ 60 ℃, then the heat-preservation heating sheet 4 is started to heat, and the conveying chamber 1 is subjected to heat preservation.

The end part of an injection pipe 8 is inserted into a position needing injection, a switch 19 is turned on, a motor 9 drives a spiral conveying piece 2 to rotate, materials are conveyed towards a liquid outlet 5 and are injected to the position needing injection from the injection pipe 8, a heat preservation heating piece 4 is used for preserving heat of a conveying chamber 1, and the temperature of liquid in the conveying chamber 1 is kept at the vitrification temperature of 50 ~ 60 degrees.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.