CN111839818A - Disposable hip joint bone cement spacer die and manufacturing method of spacer - Google Patents

Abstract

The application relates to a technical beam made of medical orthopedics bionic materials, and particularly discloses a disposable hip joint bone cement spacer die and a manufacturing method thereof. The beneficial effect of this application does: the design of symmetrical opening and closing makes the operation simple and convenient, the slip inserted buckle increases the stability of the mould, the titanium alloy J-shaped keel increases the supporting strength of the hip joint bone cement spacer after shaping, the structure is simple, the weight is light, aseptic packaging can be carried out, and the operation infection is reduced; the manufacturing method has simple process flow and is suitable for mass production.

Description

Disposable hip joint bone cement spacer die and manufacturing method of spacer

Technical Field

The application relates to the field of medical orthopedics bionic materials, in particular to a disposable hip joint bone cement spacer die and a manufacturing method of a spacer.

Background

The hip joint bone cement spacer is used in hip joint revision surgery, and solves the problems that aseptic loosening and infection are mainly used clinically, infected hip joint revision is the most difficult surgery to treat clinically at present, and when the hip joint prosthesis is subjected to infection revision, not only the factors of bones and soft tissues but also infection needs to be considered. A standard method for renovating the existing artificial hip prosthesis is to place a bone cement spacer with antibiotics in the hip joint gap after the original artificial hip prosthesis is taken out, so that the force line and the joint gap of the hip joint are maintained, and high-concentration antibiotics can be locally released to kill bacteria.

Referring to fig. 1, the existing hip joint bone cement spacer has heavy volume, complex operation and no aseptic package, and the manufactured hip joint bone cement spacer has few models and specifications and is not beautiful. The spacer die made of metal still has the problems of high cost, long processing time, high processing technology requirement, heavier die and inconvenient use.

With the rapid increase in clinical use of hip revision surgery. Therefore, a mold which is simple to operate, convenient and practical and can be used for rapidly preparing the bone cement spacer is urgently needed. How to develop a convenient, practical, low-cost and easily-popularized hip joint bone cement spacer is one of the current important research subjects in the field.

Disclosure of Invention

In order to solve the technical problems, the application provides a disposable hip joint bone cement spacer mold and a manufacturing method of the spacer.

In a first aspect, the application provides a disposable hip joint bone cement spacer mold, which adopts the following technical scheme:

the disposable hip joint bone cement spacer die comprises a first hip joint bone cement die and a second hip joint bone cement die which can be opened and closed, and a J-shaped keel arranged in the integral die after the first hip joint bone cement die and the second hip joint bone cement die are closed to form the integral die, wherein the first hip joint bone cement die and the second hip joint bone cement die are formed by injection molding of medical PP materials.

By adopting the technical scheme, the integral die is formed by mutually folding and combining the first hip joint bone cement die and the second hip joint bone cement die, the first hip joint bone cement die and the second hip joint bone cement die are compressed and fixed by the two buckles, and meanwhile, the inverted J-shaped keel can be placed in the integral die to increase the supporting strength of the formed hip joint bone cement spacer.

Preferably, clamping strips are arranged on two sides and the top side of the first hip joint bone cement mould and the second hip joint bone cement mould, the two clamping strips correspond to each other after the first hip joint bone cement mould and the second hip joint bone cement mould are closed, and locking buckles are connected to the two clamping strips in a sliding and clamping mode.

Through adopting above-mentioned technical scheme, after first hip joint bone cement mould and second hip joint bone cement mould lock, through the middle part of slip buckle to card strip, the rotatory pressing portion of pressing the buckle realizes closely consolidating of first hip joint bone cement mould and second hip joint bone cement mould, forms whole mould, compound die that can be quick, convenient to use.

Preferably, after the first hip joint bone cement mould and the second hip joint bone cement mould are closed, keel fixing parts are arranged at the bottoms of the first hip joint bone cement mould and the second hip joint bone cement mould, and the J-shaped keels are fixed in the keel fixing parts.

By adopting the technical scheme, the J-shaped keel is used for increasing the supporting strength of the hip joint bone cement spacer after molding, so that the strength of the manufactured bone cement spacer is higher.

Preferably, the J-shaped keel is made of a titanium alloy.

By adopting the technical scheme, the titanium alloy is formed by adding other elements into titanium as a base, has the characteristics of high strength and good corrosion resistance, and is suitable for being applied to the aspect of medical appliances.

Preferably, the J-shaped keel is provided with a grabbing part.

By adopting the technical scheme, the grabbing force of the J-shaped keel and the bone cement is further improved, and the overall strength of the bone cement spacer is enhanced.

Preferably, the grabbing part and the J-shaped keel are integrally formed, the grabbing part inclines downwards relative to the J-shaped keel, and the grabbing part is bent.

Through adopting above-mentioned technical scheme, grab the relative J type fossil fragments downward sloping of portion that closes, when injecting bone cement to whole mould, firstly can shunt bone cement for the bone cement of filling is more even, and the filling is more abundant, secondly, can increase J type fossil fragments and bone cement's area of contact, has further improved the intensity of spacer.

Preferably, the first hip joint bone cement mould, the second hip joint bone cement mould and the buckle are formed by medical PP injection moulding and are packaged in an aseptic mode after combination.

By adopting the technical scheme, the weight of the whole die is reduced, the manufacturing cost is also reduced, and the die is convenient to use.

In a second aspect, the present application provides a method for manufacturing a hip cement spacer, which adopts the following technical solution:

a manufacturing method of a hip joint bone cement spacer comprises the following steps:

S1, mold integration: fixing the J-shaped keel in the fixing part, buckling the first hip joint bone cement mould and the first hip joint bone cement mould, downwards sliding the buckle to the middle part of the clamping strip, downwards pressing the buckle, and locking the first hip joint bone cement mould and the second hip joint bone cement mould to form an integral mould;

and S2, injecting the stirred bone cement from the bottom of the integral die, standing for the hip joint bone cement spacer to be molded, and taking out the hip joint bone cement spacer to finish the manufacturing.

By adopting the technical scheme, after the J-shaped keel is fixed, bone cement can be injected only by buckling the first hip joint bone cement mould and the second hip joint bone cement mould and fixing the two hip joint bone cement moulds through the buckles, the manufacturing method is simple and easy, and the production efficiency of the spacer is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the design of symmetrical opening and closing makes the operation simple and convenient, the slip inserted buckle increases the stability of the mould, the titanium alloy J-shaped keel increases the supporting strength of the hip joint bone cement spacer after shaping, the structure is simple, the weight is light, aseptic packaging can be carried out, and the operation infection is reduced;

2. The manufacturing method provided by the application has the advantages of simple process flow and suitability for mass production.

Drawings

Fig. 1 is a structural view of the related art.

Fig. 2 is a schematic view of an overall opening and closing structure of the embodiment of the present application.

Fig. 3 is a schematic structural diagram of the embodiment of the present application after being integrally closed.

Fig. 4 is a schematic view of a spacer according to an embodiment of the present invention.

Description of reference numerals: 100. a first hip joint bone cement mould; 200. a second hip joint bone cement mould; 300. a J-shaped keel; 310. a grasping part; 400. clamping the strip; 500. locking the buckle; 600. fossil fragments fixed part.

Detailed Description

The present application is described in further detail below with reference to fig. 2-4.

Example one

The embodiment of the application discloses a disposable hip joint bone cement spacer mould adopts following technical scheme:

the disposable hip joint bone cement spacer die, referring to fig. 2, comprises a first hip joint bone cement die 100 and a second hip joint bone cement die 200 which can be opened and closed, and a J-shaped keel 300 arranged in the integral die after the first hip joint bone cement die 100 and the second hip joint bone cement die 200 are closed to form the integral die, wherein the first hip joint bone cement die 100 and the second hip joint bone cement die 200 are formed by injection molding of medical PP materials. The integral mold is formed by mutually folding and combining a first hip joint bone cement mold 100 and a second hip joint bone cement mold 200, the first hip joint bone cement mold 100 and the second hip joint bone cement mold 200 are compressed and fixed by two buckles, and meanwhile, an inverted J-shaped keel 300 can be placed inside the first hip joint bone cement mold 100 and the second hip joint bone cement mold 200 to increase the supporting strength of the hip joint bone cement spacer after molding.

After the first hip joint bone cement mould 100 and the second hip joint bone cement mould 200 are closed, keel fixing parts 600 are arranged at the bottoms of the first hip joint bone cement mould and the second hip joint bone cement mould, and the J-shaped keels 300 are fixed in the fixing parts. The J-shaped keel 300 serves to increase the supporting strength of the hip cement spacer after molding, and the manufactured cement spacer has higher strength.

The J-shaped keel 300 is made of titanium alloy, which is an alloy formed by adding other elements on the basis of titanium, and the titanium alloy has the characteristics of high strength and good corrosion resistance, and is suitable for being applied to the aspect of medical appliances.

The J-shaped keel 300 is provided with the grabbing part 310, so that the grabbing force of the J-shaped keel 300 and bone cement is further improved, and the overall strength of the bone cement spacer is enhanced.

The grasping portion 310 is integrally formed with the J-shaped keel 300, and the grasping portion 310 is inclined downward relative to the J-shaped keel 300. Grab the relative J type fossil fragments 300 downward sloping of portion 310 of closing, grab portion 310 and be crooked form, when injecting bone cement to whole mould, firstly can shunt bone cement for the bone cement of filling is more even, and the more abundant of filling, secondly, can increase J type fossil fragments 300 and bone cement's area of contact, has further improved the intensity of spacer.

Referring to fig. 3, the first and second hip joint bone cement molds 100 and 200 are provided with clamping strips 400 at both sides and top sides thereof, the two clamping strips 400 correspond to each other after the first and second hip joint bone cement molds 100 and 100 are closed, and the two clamping strips 400 are slidably clamped with locking buckles 500. After the first hip joint bone cement mold 100 and the second hip joint bone cement mold 200 are buckled, the clamping buckle is slid to the middle of the clamping strip 400, and the pressing part of the clamping buckle is pressed in a rotating mode, so that the first hip joint bone cement mold 100 and the second hip joint bone cement mold 200 are tightly reinforced, an integral mold is formed, mold assembly can be quickly carried out, and the use is convenient.

The first hip joint bone cement mould 100, the second hip joint bone cement mould 200 and the buckle are formed by medical PP injection moulding, and are combined and then packaged in an aseptic mode, so that surgical infection is reduced. The weight of the whole die is reduced, the manufacturing cost is reduced, and the die is convenient to use.

The embodiment of the application also discloses a manufacturing method of the hip joint bone cement spacer, which comprises the following steps:

s1, mold integration: fixing the J-shaped keel 300 in a fixing part, buckling the first hip joint bone cement mould 100 and the first hip joint bone cement mould 100, downwards sliding the buckles to the middle part of the clamping strip 400, downwards pressing the buckles, and locking the first hip joint bone cement mould 100 and the second hip joint bone cement mould 200 to form an integral mould;

and S2, injecting the stirred bone cement from the bottom of the integral die, standing for the hip joint bone cement spacer to be molded, and taking out the hip joint bone cement spacer to finish the manufacturing, wherein the structure is shown in the figure 4.

By adopting the technical scheme, after the J-shaped keel 300 is fixed, bone cement can be injected only by buckling the first hip joint bone cement mould 100 and the second hip joint bone cement mould 200 and fixing the two hip joint bone cement moulds through buckles, the manufacturing method is simple and easy, and the production efficiency of the spacer is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. Disposable hip joint bone cement spacer mould which characterized in that: the bone cement mold comprises a first hip joint bone cement mold (100) and a second hip joint bone cement mold (200) which can be opened and closed, and a J-shaped keel (300) arranged in the integral mold after the first hip joint bone cement mold (100) and the second hip joint bone cement mold (200) are closed to form the integral mold, wherein the first hip joint bone cement mold (100) and the second hip joint bone cement mold (200) are formed by injection molding of medical PP materials.

2. The disposable hip cement spacer mold according to claim 1, characterized in that: the two sides and the top side of the first hip joint bone cement mould (100) and the second hip joint bone cement mould (200) are respectively provided with a clamping strip (400), the positions of the two clamping strips (400) correspond to each other after the first hip joint bone cement mould (100) and the second hip joint bone cement mould (200) are closed, and the two clamping strips (400) are connected with a locking buckle (500) in a sliding and clamping manner.

3. The disposable hip cement spacer mold according to claim 1, characterized in that: after the first hip joint bone cement mould (100) and the second hip joint bone cement mould (200) are closed, keel fixing parts (600) are arranged at the bottoms of the first hip joint bone cement mould and the second hip joint bone cement mould, and the J-shaped keels (300) are fixed in the keel fixing parts (600).

4. The disposable hip cement spacer mold according to claim 1, characterized in that: the J-shaped keel (300) is made of a titanium alloy.

5. The disposable hip cement spacer mold according to claim 4, characterized in that: the J-shaped keel (300) is provided with a grabbing part (310).

6. The disposable hip cement spacer mold according to claim 5, characterized in that: the grabbing part (310) and the J-shaped keel (300) are integrally formed, and the grabbing part (310) inclines downwards relative to the J-shaped keel (300).

7. The disposable hip cement spacer mold according to claim 2, characterized in that: the first hip joint bone cement mould (100), the second hip joint bone cement mould (200) and the buckle are formed by medical PP injection moulding, and are packaged in an aseptic mode after combination.

8. The disposable hip cement spacer mold according to claim 7, characterized in that: the grabbing part (310) is bent.

9. A manufacturing method of a hip joint bone cement spacer is characterized in that: the method comprises the following steps:

s1, mold integration: fixing a J-shaped keel (300) in a keel fixing part (600), buckling a first hip joint bone cement mould (100) and a second hip joint bone cement mould (200), downwards sliding and buckling the buckles to the middle part of a clamping strip (400), downwards pressing the buckles, and locking the first hip joint bone cement mould (100) and the second hip joint bone cement mould (200) to form an integral mould;

and S2, injecting the stirred bone cement from the bottom of the integral die, standing for the hip joint bone cement spacer to be molded, and taking out the hip joint bone cement spacer to finish the manufacturing.

Images