CN214128755U

CN214128755U - A mould that is used for defective bone cement of large-scale bone to implant

Info

Publication number: CN214128755U
Application number: CN202023015325.7U
Authority: CN
Inventors: 程晓松
Original assignee: Liuzhou Workers Hospital
Current assignee: Liuzhou Workers Hospital
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-07
Anticipated expiration: 2030-12-14

Abstract

A mould for implanting bone cement with large-section bone defect comprises a cylinder body, wherein the cylinder body comprises an upper semi-cylinder and a lower semi-cylinder which are clamped to form a hollow cylinder body; the inner walls of the left end and the right end of the upper half cylinder and the lower half cylinder are respectively provided with an elastic rubber in a fitting manner, and the two opposite elastic rubbers on the upper half cylinder and the lower half cylinder are clamped to form a hollow cylinder; the upper half cylinder is provided with an injection hole; the clamp body comprises an upper clamp body and a lower clamp body, the upper clamp body and the lower clamp body are crossed, and the crossed part is hinged through a hinge shaft; the head end of the upper clamp body is connected with the outer wall of the upper semi-cylinder; the head end of the lower clamp body is connected with the outer wall of the lower semi-cylinder; the middle lower end of the upper plier body is provided with a hanging tooth which is consistent with the opening and closing direction of the plier body, and the lower plier body is provided with a hook tooth which is engaged with the hanging tooth; and the top end of the supporting base is connected with the tail end of the upper clamp body, and the supporting base is arranged in a vertical horizontal plane in a closed state of the barrel body. This novel device, simple structure, the mould can open and shut, can fix liberation medical personnel's both hands.

Description

A mould that is used for defective bone cement of large-scale bone to implant

Technical Field

The utility model relates to a bone cement setting device technical field especially relates to a mould that is used for damaged bone cement of large-scale bone to implant.

Background

The bone cement can be applied to the bone induction membrane technology for repairing large-section bone defect patients in clinic, the bone cement is required to be implanted into a bone defect part by the bone induction membrane technology, and an effective shaping mold is not available after the bone cement is implanted at present, so that the surface of the implanted bone cement is not smooth enough, the bone cement is seriously adhered with surrounding soft tissues, and the bone cement is difficult to take out again or the bone induction membrane is damaged.

In order to solve the problem, no mold for shaping bone cement is disclosed when large-segment bone defects are searched, so that a simple and easy-to-implement large-segment bone defect bone cement implantation mold is urgently designed.

Disclosure of Invention

An object of the utility model is to provide a mould for defective bone cement of big section bone is implanted, moreover, the steam generator is simple in structure, the mould can open and shut, the barrel can press from both sides at the defective both ends of big section bone, can inject bone cement in the barrel, open the mould and can play the defective problem of restoration big section bone after bone cement is finalized the design basically, the mould can fix liberation medical personnel's both hands, bone cement after the smooth bone cement surface that makes the design of bone cement design section of thick bamboo inner wall is smooth, can prevent because the bone cement surface is not smooth serious with soft tissue adhesion on every side, difficulty or arouse the problem of the destruction of bone induction membrane when taking out bone cement.

In order to achieve the above object, the utility model discloses a technical scheme be:

a mould for implanting bone cement in a large-section bone defect comprises a bone cement shaping barrel, wherein the barrel comprises an upper semi-cylinder and a lower semi-cylinder which are clamped to form a hollow barrel; the inner walls of the left end and the right end of the upper semi-cylinder and the lower semi-cylinder are respectively provided with an elastic rubber in a fitting manner, and the two opposite elastic rubbers on the upper semi-cylinder and the lower semi-cylinder are clamped to form a hollow cylinder; an injection hole is formed in the upper semi-cylinder;

the clamp body comprises an upper clamp body and a lower clamp body, the upper clamp body and the lower clamp body are crossed, and the crossed part is hinged through a hinge shaft; the head end of the upper clamp body is connected with the outer wall of the upper semi-cylinder; the head end of the lower clamp body is connected with the outer wall of the lower semi-cylinder; the middle lower end of the upper clamp body is provided with a hanging tooth which is consistent with the opening and closing direction of the clamp body, and the lower clamp body is provided with a hook tooth which is meshed with the hanging tooth;

and the top end of the supporting base is connected with the tail end of the upper clamp body, and the supporting base is arranged in a vertical horizontal plane in a closed state of the barrel body.

Further, a plurality of small bulges are arranged on the outer wall of the elastic rubber.

Further, the tail ends of the upper clamp body and the lower clamp body are respectively provided with a retaining ring.

Further explaining, the supporting base is a telescopic rod and comprises a sub-rod, a main rod and a limiting screw which are coaxially sleeved, a first limiting hole is formed in the main rod and is perpendicular to the main rod, and the whole main rod penetrates through the first limiting hole; a plurality of second limiting holes are equidistantly arranged on the same vertical line on the sub-rod, are formed in the vertical direction of the sub-rod and penetrate through the whole sub-rod; the limiting screw penetrates through the first limiting hole and the second limiting hole to achieve the limiting effect.

Further, the bottom of the supporting base is provided with an anti-skid block.

Further, the height of the hollow cylinder is 1-2 cm; the thickness of the elastic rubber is 0.1-0.2 cm.

Further, an internal thread is arranged on the inner wall of the injection hole, and a screw is screwed in the injection hole; the length of the screw is equal to the thickness of the cylinder.

Further, the cylinder body is made of transparent plastic products, and the inner wall of the cylinder body is smooth.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a mould for the defective bone cement of big section bone implants, can not advance to fix bone cement design ingeniously between the defective two bones of big section bone to the mould can open and shut, also can open the mould after fixed completion when conveniently fixing bone cement, it is convenient to dismantle, and be provided with a support base at the pincers body end, can support the pincers body and reach the purpose of liberating medical personnel's both hands, bone cement shaping section of thick bamboo inner wall is smooth makes the bone cement surface after the design smooth, can prevent because bone cement surface is unsmooth and the adhesion of soft tissue is serious on every side, the problem of the destruction of difficult or arouse bone induction membrane when taking out bone cement.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of the present invention.

Fig. 3 is a schematic structural diagram of another state according to another embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the barrel of the present invention.

Fig. 5 is a cross-sectional view of the support base according to the present invention.

Fig. 6 is a cross-sectional view of another state of the support base of the present invention.

In the figure, 1-an upper semi-cylinder, 2-elastic rubber, 3-an upper clamp body, 4-a hinged shaft, 5-a lower clamp body, 6-a retaining ring, 7-a hook tooth, 8-a hanging tooth, 9-a supporting base, 10-an anti-slip block, 11-a lower semi-cylinder, 12-an injection hole, 13-a screw, 21-a small bulge, 13-a sub-rod, 131-a second limiting hole, 14-a female rod, 141-a first limiting hole and 15-a limiting screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is said to be "coupled" to another component, it may be directly coupled to the other component or intervening components may be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1:

referring to fig. 1, 4, 5 and 6, a preferred embodiment of the present invention provides a mold for implanting bone cement with large-sized bone defects, comprising a bone cement shaping cylinder made of transparent plastic and having a smooth inner wall; the cylinder body comprises an upper semi-cylinder 1 and a lower semi-cylinder 11, and a hollow cylinder body (with openings at two ends) is formed after clamping; the inner walls of the left end and the right end of the upper semi-cylinder 1 and the lower semi-cylinder 11 are respectively provided with an elastic rubber 2 in a fitting manner, and the two opposite elastic rubbers 2 on the upper semi-cylinder 1 and the lower semi-cylinder 11 are clamped to form a hollow cylinder (namely, the two opposite elastic rubbers 2 on the inner walls of the left ends of the upper semi-cylinder 1 and the lower semi-cylinder 11 are clamped to form a hollow cylinder, and the two opposite elastic rubbers 2 on the inner walls of the right ends of the upper semi-cylinder 1 and the lower semi-cylinder 11 are clamped to form a hollow cylinder); the height of the hollow cylinder is preferably 1-2 cm; the thickness of the elastic rubber 2 is 0.1-0.2 cm; the upper semi-cylinder 1 is provided with an injection hole 12; a plurality of small bulges 21 are arranged on the outer wall of the elastic rubber 2; an internal thread is arranged on the inner wall of the injection hole 12, and a screw 13 is screwed in the injection hole 12; the length of the screw 13 is equal to the thickness of the cylinder.

The formed hollow cylinder body is used for shaping bone cement, the bone cement is injected from the injection hole 12, the setting cylinder body is transparent, the condition of the injected bone cement amount can be more visually seen, the proper injection amount is convenient to judge, the two opposite elastic rubbers 2 on the left and right end inner walls of the upper half cylinder 1 and the lower half cylinder 11 are clamped to form a hollow cylinder which is positioned in the cylinder body, the height of the hollow cylinder can be just clamped with bones at two ends of a large-section bone defect, the thickness of the elastic rubbers 2 is designed to be thinner, in the clamping process, the thickness can be thinner under the influence of elasticity due to the action of pressure, the diameter of the formed bone cement is not influenced to be overlarge than that of the two ends of the large-section bone defect, and a plurality of small bulges 21 are arranged on the outer wall of the elastic rubbers 2, so that the bone cement can be better and stably clamped on the two ends of the large-section bone defect, playing a role of reinforcement. The filling hole 12 is matched with a screw 13, can be better observe the full back of pouring into bone cement into a section of thick bamboo, seal the barrel, reach more quick reinforced bone cement shaping, the length of screw 13 equals the thickness of barrel, can reach the smooth effect in bone cement surface after the design.

The mould for implanting the cement into the large-section bone defect bone also comprises a clamp body, wherein the clamp body comprises an upper clamp body 3 and a lower clamp body 5, the upper clamp body 3 and the lower clamp body 5 are crossed, and the crossed part is hinged through a hinged shaft 4; the head end of the upper clamp body 3 is connected with the outer wall of the upper semi-cylinder 1; the head end of the lower clamp body 5 is connected with the outer wall of the lower semi-cylinder 11; when the upper forceps body 3 and the lower forceps body 5 are closed to a certain degree, the upper half cylinder 1 and the lower half cylinder 11 respectively connected with the upper forceps body 3 and the lower forceps body 5 are also closed to form a complete cylinder. Hanging teeth 8 which are consistent with the opening and closing directions of the forceps bodies are arranged on the middle lower end of the upper forceps body 3, the hanging teeth 8 are arranged side by side at equal intervals, a plurality of hanging teeth 8 are arranged, and hook teeth 7 which are meshed with the hanging teeth 8 are arranged on the lower forceps body 5; the hook teeth 7 and the hanging teeth 8 can be fixed in a meshed mode, and the closed state of the barrel body can be controlled.

Referring to fig. 5 and 6 and a supporting base 9, the top end of the supporting base 9 is connected to the end of the upper clamp body 3, and the supporting base 9 is disposed vertically and horizontally in the closed state of the cylinder. The supporting base 9 is a telescopic rod and comprises a sub-rod 13, a main rod 14 and a limiting screw 15 which are coaxially sleeved, a first limiting hole 141 is formed in the main rod 14, the first limiting hole 141 is formed in a vertical direction perpendicular to the main rod 14, and the whole main rod 14 penetrates through the first limiting hole 141; a plurality of second limiting holes 131 are equidistantly arranged on the same vertical line on the sub-rod 13, and the second limiting holes 131 are formed in the vertical direction of the sub-rod 13 and penetrate through the whole sub-rod 13; the limiting screw 15 penetrates through the first limiting hole 141 and the second limiting hole 131 to achieve the limiting effect, the aperture size of the limiting hole is matched with that of the limiting screw 15, and the preferred limiting hole is in threaded connection with the limiting screw 15. The bottom of the supporting base 9 is provided with an antiskid block 10 for placing the supporting base 9 to move.

The method comprises the following operation steps: opening the leg from the side surface in the operation, seeing the position of the large bone defect, preparing to carry out the cement shaping of the large bone defect, relatively keeping the upper clamp body 3 and the lower clamp body 5 away from each other and opening the upper barrel and the lower barrel, finding the positions of two ends of the large bone defect, relatively approaching the upper clamp body 3 and the lower clamp body 5 to clamp until the upper barrel and the lower barrel are closed to form a hollow barrel, respectively clamping two open ends of the barrel at two opposite ends of the large bone defect, connecting the large bone defect by the barrel, meshing and fixing the hook teeth 7 and the hanging teeth 8 at the position, adjusting the supporting base 9 to a proper height, fixing the supporting base 9 on an operating table on a horizontal plane to fix the position of the barrel, injecting the cement from the injection hole 12, observing the full barrel, then injecting the upper screw 13 into the injection hole 12, waiting for about 15 minutes, opening the upper clamp body 3 and the lower clamp body 5 to open the upper cylinder body and the lower cylinder body, molding bone cement, and connecting the bone cement to the position of the large bone defect to complete the molding of the bone cement.

Example 2:

referring to fig. 2 and 3, the basic structure of this embodiment is the same as that of embodiment 1, except that: the tail ends of the upper forceps body 3 and the lower forceps body 5 are respectively provided with a retaining ring 6, the top end of the supporting base 9 is connected to the retaining ring 6 at the tail end of the upper forceps body 3, and the supporting base 9 is arranged vertical to the horizontal plane in the closed state of the barrel body.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. A mould that is used for defective bone cement of major segment bone to implant which characterized in that: the bone cement shaping barrel comprises an upper semi-cylinder and a lower semi-cylinder, and a hollow barrel is formed after clamping; the inner walls of the left end and the right end of the upper semi-cylinder and the lower semi-cylinder are respectively provided with an elastic rubber in a fitting manner, and the two opposite elastic rubbers on the upper semi-cylinder and the lower semi-cylinder are clamped to form a hollow cylinder; an injection hole is formed in the upper semi-cylinder;

2. The mold for cement implantation of a large bone defect according to claim 1, wherein: the outer wall of the elastic rubber is provided with a plurality of small bulges.

3. The mold for cement implantation of a large bone defect according to claim 1, wherein: the tail ends of the upper clamp body and the lower clamp body are respectively provided with a retaining ring.

4. The mold for cement implantation of a large bone defect according to claim 1, wherein: the supporting base is a telescopic rod and comprises a sub-rod, a main rod and a limiting screw which are coaxially sleeved, a first limiting hole is formed in the main rod, the first limiting hole is formed in the vertical direction perpendicular to the main rod, and the whole main rod penetrates through the first limiting hole; a plurality of second limiting holes are equidistantly arranged on the same vertical line on the sub-rod, are formed in the vertical direction of the sub-rod and penetrate through the whole sub-rod; the limiting screw penetrates through the first limiting hole and the second limiting hole to achieve the limiting effect.

5. The mold for cement implantation of a large bone defect according to claim 1, wherein: the bottom of the supporting base is provided with an anti-skid block.

6. The mold for cement implantation of a large bone defect according to claim 1, wherein: the height of the hollow cylinder is 1-2 cm; the thickness of the elastic rubber is 0.1-0.2 cm.

7. The mold for cement implantation of a large bone defect according to claim 1, wherein: the inner wall of the injection hole is provided with an internal thread, and a screw is matched and screwed in the injection hole; the length of the screw is equal to the thickness of the cylinder.

8. The mold for cement implantation of a large bone defect according to claim 1, wherein: the cylinder body is made of transparent plastic products, and the inner wall of the cylinder body is smooth.