CN112807069A - Calcium phosphate bone cement round bar manufacturing tool and bone cement round bar manufacturing method - Google Patents
Calcium phosphate bone cement round bar manufacturing tool and bone cement round bar manufacturing method Download PDFInfo
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- CN112807069A CN112807069A CN202110178963.0A CN202110178963A CN112807069A CN 112807069 A CN112807069 A CN 112807069A CN 202110178963 A CN202110178963 A CN 202110178963A CN 112807069 A CN112807069 A CN 112807069A
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- Prior art keywords
- cement
- calcium phosphate
- injector head
- round bar
- injection tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8833—Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
Abstract
The invention discloses a calcium phosphate cement round bar manufacturing tool and a method for manufacturing a calcium phosphate cement round bar, wherein the calcium phosphate cement round bar manufacturing tool comprises a bone cement injector and a forming nozzle; the bone cement injector comprises a bone cement injection tube, an injector head, a sliding plug, a push rod and a handle, wherein an opening for injecting calcium phosphate bone cement is formed in the front end of the bone cement injection tube, the injector head is detachably connected to the opening in the front end of the bone cement injection tube, and the push rod is connected between the sliding plug and the handle. The calcium phosphate cement round bar manufacturing tool is provided with the bone cement injector and the forming nozzle, calcium phosphate cement injected into the bone cement injector can form the calcium phosphate cement round bar after being sprayed out by the forming nozzle, and can be conveniently and effectively implanted into a screw hole after being cured.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a calcium phosphate cement round bar manufacturing tool and a method for manufacturing a calcium phosphate cement round bar.
Background
The removal of internal fixation devices for bone fractures is a common operation in bone surgery. The absorbable calcium phosphate bone cement is implanted into the nail hole left after the screw is taken out, so that the bone formation can be accelerated, and the speed of restoring the bone to normal strength can be obviously accelerated. At present, no special nail hole bone grafting instrument or product exists, the special nail hole bone grafting instrument or product is usually injected by a syringe or is applied by hands, and the modes have the defects of blood collapse, overflow from an inlet or an outlet of a nail hole, infirmity filling and the like of bone cement. How to design a tool to conveniently manufacture an absorbable calcium phosphate cement round bar matched with the diameter of a screw hole on an operating table on site, and the round bar can be conveniently and effectively implanted into the screw hole after being cured is a technical problem to be solved at present.
Disclosure of Invention
Therefore, the invention provides a calcium phosphate cement round bar manufacturing tool and a method for manufacturing a calcium phosphate cement round bar, and aims to solve the problems that in the prior art, calcium phosphate cement is injected by an injector or manually plastered into a cement round bar, so that the cement round bar is broken off when meeting blood, overflows from an inlet or an outlet of a nail hole, is not filled really, and the like.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to a first aspect of the present invention, there is provided a calcium phosphate cement round bar manufacturing tool comprising a cement injector and a shaping nozzle; the bone cement injector comprises a bone cement injection tube, an injector head, a sliding plug, a push rod and a handle, wherein an opening for injecting calcium phosphate bone cement is formed in the front end of the bone cement injection tube, the injector head is detachably connected to the opening in the front end of the bone cement injection tube, the push rod is connected between the sliding plug and the handle, and the sliding plug can be attached to the inner wall of the bone cement injection tube in a front-back sliding manner; the shaping nozzle is detachably connected to the injector head, and the shaping nozzle, the injector head and the bone cement injection cylinder are communicated.
Further, the injector head comprises an injector head front part and an injector head rear part, the injector head front part is cylindrical with openings at two ends, the injector head rear part is circular truncated cone with openings at two ends, and the injector head front part is connected to one end of the injector head rear part with a smaller size.
Furthermore, the back part of the injector head is provided with internal threads, the front end of the bone cement injection tube is provided with external threads, and the back part of the injector head is in threaded connection with the front end of the bone cement injection tube.
Further, the forming nozzle comprises a forming nozzle connecting part and a cement round bar forming part, the forming nozzle connecting part and the cement round bar forming part are cylindrical with openings at two ends and different in diameter, and the cement round bar forming part is connected to the front end of the forming nozzle connecting part.
Further, the forming nozzle connecting part is provided with an external thread, the front part of the injector head is provided with an internal thread, and the forming nozzle connecting part is in threaded connection with the front part of the injector head.
Further, the sliding plug is in a circular truncated cone shape, and the diameter of the sliding plug is increased from front to back.
Further, the diameter of the cement round bar forming part is one of 2.5mm, 2.8mm, 3.2mm and 4.3 mm.
Furthermore, the forming nozzle is a transparent forming nozzle, the head of the injector is a transparent head, the bone cement injection tube is a transparent injection tube, and the outer wall of the bone cement injection tube is provided with milliliter scale lines and scale numerical values.
According to a second aspect of the present invention, the present invention provides a method for manufacturing a calcium phosphate cement round bar based on the calcium phosphate cement round bar manufacturing tool, the method comprising the steps of: s1, preparing absorbable calcium phosphate bone cement; s2, keeping the head of the injector and the bone cement injection tube separated, and pulling the handle and the push rod downwards to enable the sliding plug to slide to the tail end of the bone cement injection tube; s3, filling the prepared calcium phosphate cement from an opening at the upper end of the cement injection tube, connecting the head of the injector to the opening at the upper end of the cement injection tube, and pushing the handle and the push rod upwards to discharge air in the cement injection tube through the head of the injector; and S4, connecting the forming nozzle to the upper end of the head of the injector, and pushing the handle and the push rod forwards to enable the calcium phosphate cement to be sprayed out through the forming nozzle to form a round rod shape.
The invention has the following advantages:
the calcium phosphate cement round bar manufacturing tool is provided with the bone cement injector and the forming nozzle, calcium phosphate cement injected into the bone cement injector can form the calcium phosphate cement round bar after being sprayed out by the forming nozzle, and can be conveniently and effectively implanted into a screw hole after being cured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic structural diagram of a tool for manufacturing a calcium phosphate cement round bar according to the present invention;
in the figure:
1. a bone cement injector; 2. forming a spray head; 3. a bone cement injection tube; 4. a syringe head; 5. a sliding plug; 6. a push rod; 7. a handle; 8. the front part of the injector head; 9. forming a nozzle connecting part; 10. a cement round bar forming part; 11. the back of the injector head.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The present embodiment provides a calcium phosphate cement round bar manufacturing tool, as shown in fig. 1, the calcium phosphate cement round bar manufacturing tool includes a cement injector 1 and a forming nozzle 2; the bone cement injector 1 comprises a bone cement injection tube 3, an injector head 4, a sliding plug 5, a push rod 6 and a handle 7, wherein an opening for injecting calcium phosphate bone cement is formed at the front end of the bone cement injection tube 3, the injector head 4 is detachably connected with the opening at the front end of the bone cement injection tube 3, the push rod 6 is connected between the sliding plug 5 and the handle 7, and the sliding plug 5 can be attached to the inner wall of the bone cement injection tube 3 in a front-back sliding manner; the shaped nozzle 2 is detachably connected to the injector head 4, and the shaped nozzle 2, the injector head 4 and the bone cement injection cylinder 3 are communicated.
The tool for manufacturing the calcium phosphate cement round bar of the embodiment comprises one or two sterilized independent packages. In the calcium phosphate cement round bar manufacturing tool of the present embodiment, the sliding plug 5 is tightly attached to the inner wall of the cement injection cylinder 3. In use, first, the syringe head 4 and the cement syringe barrel 3 are kept apart, and the handle 7 and the push rod 6 are pulled down to slide the sliding plug 5 to the end of the cement syringe barrel 3; then, the prepared calcium phosphate cement is filled from the opening at the upper end of the cement injection tube 3, after the calcium phosphate cement is filled, the injector head 4 is connected to the opening at the upper end of the cement injection tube 3, the handle 7 and the push rod 6 are pushed upwards to discharge the air in the cement injection tube 3 through the injector head 4, after the air is discharged, the forming nozzle 2 is connected to the upper end of the injector head 4, the handle 7 and the push rod 6 are pushed forwards to enable the calcium phosphate cement to be sprayed out through the forming nozzle 2 to form a calcium phosphate cement round bar, and the formed calcium phosphate cement round bar can be conveniently and effectively implanted into a screw hole after being solidified.
Example 2
The tool for manufacturing a calcium phosphate cement round bar according to embodiment 1, as shown in fig. 1, the injector head 4 includes an injector head front portion 8 and an injector head rear portion 11, the injector head front portion 8 is cylindrical with two open ends, the injector head rear portion 11 is truncated cone with two open ends, and the injector head front portion 8 is connected to the smaller end of the injector head rear portion 11.
In the tool for manufacturing the calcium phosphate cement round bar of the embodiment, the calcium phosphate cement in the cement injection tube 3 sequentially flows out through the rear part 11 of the injector head, the front part 8 of the injector head and the forming nozzle 2 to form the calcium phosphate cement round bar, the rear part 11 of the injector head is in a circular truncated cone shape with openings at two ends, and the diameter of the calcium phosphate cement round bar is sequentially reduced from back to front, so that the size of a 'flow channel' into which the calcium phosphate cement enters is sequentially reduced in the process that the calcium phosphate cement in the cement injection tube 3 is injected into the front part 8 of the injector head and the forming nozzle 2 through the rear part 11 of the injector head, the extrusion acting force applied to the inner wall of the rear part 11 of the injector head is sequentially and gradually increased, the cracking caused by the sudden increase of the acting force is avoided, and the stability and the.
Example 3
The tool for manufacturing a calcium phosphate cement round bar according to embodiment 2, as shown in fig. 1, the rear part 11 of the injector head is provided with an internal thread, the front end of the cement injection tube 3 is provided with an external thread, and the rear part 11 of the injector head is in threaded connection with the front end of the cement injection tube 3. Therefore, the rear part 11 of the injector head and the front end of the bone cement injection tube 3 are not only convenient and easy to connect and operate, but also can be hermetically connected, so that the calcium phosphate bone cement in the bone cement injection tube 3 can be completely sprayed out through the forming nozzle 2 to form a calcium phosphate bone cement round bar, and the effectiveness is better.
Example 4
As shown in fig. 1, the calcium phosphate cement round bar manufacturing tool according to embodiment 2 includes a forming nozzle connecting portion 9 and a cement round bar forming portion 10, wherein the forming nozzle connecting portion 9 and the cement round bar forming portion 10 are cylindrical and have two open ends and different diameters, and the cement round bar forming portion 10 is connected to a front end of the forming nozzle connecting portion 9.
In the tool for manufacturing the calcium phosphate cement round bar of the present embodiment, the forming nozzle connecting portion 9 is preferably configured to be funnel-shaped, with a large opening end facing downward and a small opening end facing upward, so that in the process that the calcium phosphate cement in the cement injection tube 3 is conveyed to the forming nozzle connecting portion 9 through the injector head 4 and then continuously flows to the cement round bar forming portion 10, the flow channel in the forming nozzle connecting portion 9 is gradually reduced, thereby avoiding instability caused by sudden reduction, and enabling the calcium phosphate cement in the cement injection tube 3 to be continuously and stably discharged through the cement round bar forming portion 10 to form the calcium phosphate cement round bar.
Example 5
The tool for manufacturing a calcium phosphate cement round bar according to embodiment 4, as shown in fig. 1, the forming nozzle connecting part 9 is provided with an external thread, the injector head front part 8 is provided with an internal thread, and the forming nozzle connecting part 9 is in threaded connection with the injector head front part 8. In this way, the connection operation between the forming nozzle connecting part 9 and the injector head front part 8 is convenient and fast, the two parts can be connected in a good sealing way, and the calcium phosphate cement in the cement injection tube 3 can be completely discharged from the cement round bar forming part 10 to form the calcium phosphate cement round bar.
Example 6
The tool for manufacturing a calcium phosphate cement round bar according to any one of embodiments 1 to 5, as shown in fig. 1, the sliding plug 5 has a circular truncated cone shape and a diameter that increases from front to back. The sliding plug 5 is designed in such a shape that it facilitates an orderly and steady forward flow of calcium phosphate cement in the cement syringe 3.
Example 7
The tool for manufacturing a calcium phosphate cement round bar according to embodiment 4, wherein the cement round bar forming part 10 has a diameter of 2-6mm, and specifically, the cement round bar forming part 10 has a diameter of one of 2.5mm, 2.8mm, 3.2mm and 4.3 mm.
The cement round bar forming part 10 can be divided into a plurality of types according to the diameter so as to correspond to the diameters of core rods of different types of screws, for example, the diameter of the cement round bar forming part 10 corresponding to an upper limb screw can be 2.5mm or 2.8mm, the diameter of the cement round bar forming part 10 corresponding to a lower limb screw can be 3.2mm or 4.3mm, and hand and foot screws, spinal screws and the like can correspond to other suitable sizes. Thus, the tool for manufacturing the calcium phosphate cement round bar of the embodiment can be used for preparing the calcium phosphate cement round bar suitable for various screw holes.
The forming nozzle 2 is a transparent forming nozzle, the injector head 4 is a transparent head, the bone cement injection tube 3 is a transparent injection tube, and the outer wall of the bone cement injection tube 3 is provided with milliliter scale lines and scale numerical values. The arrangement is convenient for medical staff to clearly observe and observe during operation.
The calcium phosphate cement round bar manufacturing tool in the embodiment can be used for manufacturing a cement round bar on an operating table on site, and the calcium phosphate cement round bar manufacturing tool in the embodiment can be made of a non-toxic, stable and sterilizable material, is sterilized, packaged and disposable.
Example 8
This embodiment provides a method for manufacturing a calcium phosphate cement round bar based on the calcium phosphate cement round bar manufacturing tool of any one of embodiments 1 to 6, as shown in fig. 1, the method comprising the following steps:
s1, preparing absorbable calcium phosphate bone cement;
s2, keeping the injector head 4 and the bone cement injection tube 3 separated, and pulling the handle 7 and the push rod 6 downwards to enable the sliding plug 5 to slide to the tail end of the bone cement injection tube 3;
s3, filling prepared calcium phosphate cement from an opening at the upper end of the cement injection tube 3, connecting the injector head 4 to the opening at the upper end of the cement injection tube 3, and pushing the handle 7 and the push rod 6 upwards to discharge air in the cement injection tube 3 through the injector head 4;
s4, connecting the forming nozzle 2 to the upper end of the injector head 4, and pushing the handle 7 and the push rod 6 forwards to enable the calcium phosphate cement to be sprayed out through the forming nozzle 2 to form a round rod shape.
After the internal fixation device of the fracture is exposed in the operation, 1 screw is taken down to check the diameter of the core rod, and the forming nozzle 2 with the same diameter is taken for standby. Mixing absorbable calcium phosphate cement, sucking into the cement injection tube 3, and discharging air to connect the forming nozzle. Extruding the absorbable calcium phosphate cement to the smooth flat bottom of the surgical bent disc to form a plurality of cylindrical long calcium phosphate cement round bars, and curing to form the absorbable calcium phosphate cement round bars. When one screw is detached, a section of absorbable calcium phosphate cement round bar is cut according to the length of the screw and pushed into the screw hole, and then bone grafting can be conveniently and effectively completed.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A calcium phosphate cement round bar manufacturing tool is characterized by comprising a cement injector (1) and a forming nozzle (2); the bone cement injector (1) comprises a bone cement injection tube (3), an injector head part (4), a sliding plug (5), a push rod (6) and a handle (7), wherein the front end of the bone cement injection tube (3) is provided with an opening for injecting calcium phosphate bone cement, the injector head part (4) is detachably connected with the opening at the front end of the bone cement injection tube (3), the push rod (6) is connected between the sliding plug (5) and the handle (7), and the sliding plug (5) can be attached to the inner wall of the bone cement injection tube (3) in a front-back sliding manner; the shaping nozzle (2) is detachably connected to the injector head (4), and the shaping nozzle (2), the injector head (4) and the bone cement injection cylinder (3) are communicated.
2. The tool for making round calcium phosphate cement rods according to claim 1, wherein the injector head (4) comprises an injector head front part (8) and an injector head rear part (11), the injector head front part (8) is cylindrical with two open ends, the injector head rear part (11) is truncated cone with two open ends, and the injector head front part (8) is connected to the smaller end of the injector head rear part (11).
3. The tool for manufacturing a calcium phosphate cement round bar according to claim 2, wherein the rear injector head (11) is provided with an internal thread, the front end of the cement injection tube (3) is provided with an external thread, and the rear injector head (11) is in threaded connection with the front end of the cement injection tube (3).
4. The tool for manufacturing a calcium phosphate cement round bar according to claim 2, wherein the forming nozzle (2) comprises a forming nozzle connecting part (9) and a cement round bar forming part (10), the forming nozzle connecting part (9) and the cement round bar forming part (10) are cylindrical with two open ends and have different diameters, and the cement round bar forming part (10) is connected to the front end of the forming nozzle connecting part (9).
5. Tool for the production of round calcium phosphate cement rods according to claim 4, characterized in that the shaped nozzle connection part (9) is provided with an external thread and the injector head front part (8) is provided with an internal thread, the shaped nozzle connection part (9) being screwed to the injector head front part (8).
6. Tool for the production of round calcium phosphate cement rods according to any one of claims 1 to 5, characterized in that the sliding plug (5) is frustoconical and increases in diameter from front to back.
7. The tool for making round calcium phosphate cement rod according to claim 4, characterized in that the cement rod forming part (10) has one of 2.5mm, 2.8mm, 3.2mm and 4.3mm diameter.
8. The tool for making round calcium phosphate cement rods according to any one of claims 1 to 5, wherein the shaped nozzle (2) is a transparent shaped nozzle, the injector head (4) is a transparent head, the cement syringe (3) is a transparent syringe, and the outer wall of the cement syringe (3) is provided with milliliter scale lines and scale numerical values.
9. A method for manufacturing a calcium phosphate cement round bar based on the calcium phosphate cement round bar manufacturing tool of any one of claims 1 to 5, comprising the steps of:
s1, preparing absorbable calcium phosphate bone cement;
s2, keeping the injector head (4) and the bone cement injection tube (3) separated, and pulling the handle (7) and the push rod (6) downwards to enable the sliding plug (5) to slide to the tail end of the bone cement injection tube (3);
s3, filling prepared calcium phosphate cement from an opening at the upper end of the cement injection tube (3), connecting the injector head (4) to the opening at the upper end of the cement injection tube (3), and pushing the handle (7) and the push rod (6) upwards to discharge air in the cement injection tube (3) through the injector head (4);
and S4, connecting the forming nozzle (2) to the upper end of the injector head (4), and pushing the handle (7) and the push rod (6) forwards to enable the calcium phosphate cement to be sprayed out through the forming nozzle (2) to form a round rod shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110178963.0A CN112807069A (en) | 2021-02-09 | 2021-02-09 | Calcium phosphate bone cement round bar manufacturing tool and bone cement round bar manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110178963.0A CN112807069A (en) | 2021-02-09 | 2021-02-09 | Calcium phosphate bone cement round bar manufacturing tool and bone cement round bar manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112807069A true CN112807069A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110178963.0A Pending CN112807069A (en) | 2021-02-09 | 2021-02-09 | Calcium phosphate bone cement round bar manufacturing tool and bone cement round bar manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112807069A (en) |
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2021
- 2021-02-09 CN CN202110178963.0A patent/CN112807069A/en active Pending
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