Medical material stirring injector

Abstract

The utility model provides a medical material stirring injector which comprises an injection cylinder body and a pushing and injecting composite part, and the pushing and injecting composite part is arranged on the injection cylinder body in a lifting and rotating mode and used for stirring and pushing and injecting injection materials in the injection cylinder body. The pushing and injecting composite part is provided with a stirring part and a piston part, and the stirring part is arranged on the piston part in a liftable and rotatable mode and used for stirring injection materials in the injection barrel; and the stirring part is provided with a locking piece which is used for fastening the stirring part and the piston part during injection. Through the arrangement of the pushing and injecting composite part, during stirring, the stirring part is separated from the piston part, and injection materials in the injection barrel are continuously and fully stirred; the stirring efficiency is improved; during injection, the stirring part and the piston part are quickly fixed and combined into a whole for injection. The risk that the injection material is polluted due to transfer is reduced, the injection time is shortened, and the problem that the use effect is affected due to rapid condensation of the injection material is solved. The overall structural design is simple, and operation is efficient and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a stirring syringe for medical materials, which is applicable to the clinical use of medical materials including bone cement. Background Art

[0002] As a common clinical injection material, bone cement is a medical material synthesized mainly by polymethyl methacrylate or calcium phosphate, etc., which has good setting time, injectability and biological properties, and is widely used in clinical orthopedic surgeries to fill the fractured or defective parts. The currently common method is to put the solid phase and liquid phase of bone cement into the bone cement syringe barrel for stirring to form bone cement, and then use a syringe connected to a push-rod type bone cement injection barrel to inject the bone cement into the human bone defect site. This method can shorten the operation time and reduce the pollution risk compared with the original method of stirring the bone cement in a stirrer and then transferring it into a syringe for injection. However, the degradable calcium phosphate bone cement has a certain viscosity, which will affect the stirring efficiency of the bone cement during the stirring process; in addition, bone cement usually has a very short setting time, so sufficient and efficient stirring and rapid injection are required. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stirring syringe for medical materials, which is applicable to the clinical use of medical materials including bone cement, so as to solve at least one of the above technical problems existing in the prior art.

[0004] To solve the above technical problems, a stirring syringe for medical materials provided by the utility model includes: an injection barrel body and a pushing and compounding part, wherein the pushing and compounding part is arranged on the injection barrel body in a liftable and rotatable manner for stirring and pushing the injection material in the injection barrel body;

[0005] The pushing and compounding part is provided with a stirring part and a piston part, and the stirring part is arranged on the piston part in a liftable and rotatable manner for stirring the injection material in the injection barrel body;

[0006] The stirring part is provided with a locking part for fastening with the piston part during pushing.

[0007] The setting of the locking part enables the stirring part and the piston part to be quickly fixed to form the pushing and compounding part to complete the pushing of the bone cement after stirring, avoiding the setting of the injection material in a short time and affecting the use effect of the injection material.

[0008] Furthermore, the stirring part is provided with a stirring rod and a plurality of stirring blades;

[0009] The stirring blades are uniformly arranged at the lower end of the stirring rod along the circumferential direction of the stirring rod;

[0010] The stirring rod penetrates upward and extends out of the piston part, and an external thread is arranged on the upper part of the stirring rod for connecting the locking part.

[0011] Further, a first handle is fixedly arranged at the top of the stirring rod for driving the lifting and rotation of the stirring rod.

[0012] Preferably, the piston part is provided with a piston sleeve and an injection piston; the injection piston is fixedly arranged at the bottom of the piston sleeve, and the injection piston is provided with an inner hole communicating with the piston sleeve for the stirring rod to penetrate through.

[0013] Further, a sealing ring is arranged on the outer periphery of the injection piston for sealing between the injection piston and the inner wall of the injection cylinder body.

[0014] Further, an injection cylinder cover is fixedly sleeved on the outer side wall of the top of the piston sleeve for covering the injection cylinder body, and the injection cylinder cover is arranged in an inverted cylindrical shape.

[0015] Further, the outer side wall of the injection cylinder body is threadedly connected with the inner side wall of the injection cylinder cover.

[0016] Further, a second handle is arranged on the outer side wall of the injection cylinder cover for driving the injection cylinder cover to rotate and lift along the outer wall of the injection cylinder body through threaded connection.

[0017] Preferably, an injection nozzle is arranged at the bottom of the injection cylinder body, and the injection nozzle is connected with a sealing plug for plugging the injection nozzle.

[0018] Further, a conversion joint is further included for connecting the injection nozzle and a push - type syringe during injection.

[0019] Adopting the above - mentioned technical solution, the utility model has the following beneficial effects:

[0020] A medical material stirring syringe provided by the utility model has the following advantages:

[0021] 1. Through the arrangement of the injection compound part, during stirring, the stirring part and the piston part are separated, and the injection material in the injection cylinder body is continuously and fully stirred, greatly improving the stirring efficiency of high - viscosity injection materials; when injection is completed after stirring, the stirring part and the piston part are quickly fixed and integrated into one body to inject the injection material, which not only reduces the risk of being contaminated caused by the transfer of the injection material, but also shortens the injection time of the injection material, and solves the problem that the rapid condensation of the injection material affects the use effect.

[0022] 2. The overall structure of the device is simply designed, and the operation is efficient and convenient. Brief Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A perspective view of a medical material stirring syringe provided by an embodiment of the present utility model;

[0025] Figure 2 A perspective transparent view of a medical material stirring syringe provided by an embodiment of the present utility model;

[0026] Figure 3 A front view of the stirring part in a medical material stirring syringe provided by an embodiment of the present utility model;

[0027] Figure 4 An assembly drawing of the stirring rod and the stirring blade in a medical material stirring syringe provided by an embodiment of the present utility model;

[0028] Figure 5 An assembly drawing of the stirring rod and the locking nut in a medical material stirring syringe provided by an embodiment of the present utility model;

[0029] Figure 6 A perspective view of the piston part in a medical material stirring syringe provided by an embodiment of the present utility model;

[0030] Figure 7 A perspective view of the injection barrel in a medical material stirring syringe provided by an embodiment of the present utility model;

[0031] Figure 8 An assembly drawing of the sealing plug and the assembly of the sealing plug and the injection nozzle in a medical material stirring syringe provided by an embodiment of the present utility model;

[0032] Figure 9 An assembly drawing of the adapter and the assembly of the adapter and the injection nozzle in a medical material stirring syringe provided by an embodiment of the present utility model.

[0033] Reference numerals:

[0034] 10 - injection barrel; 11 - injection nozzle; 20 - stirring part; 21 - stirring blade; 22 - stirring rod; 23 - first handle; 24 - locking nut; 30 - piston part; 31 - injection piston; 32 - piston sleeve; 33 - injection barrel cover; 34 - sealing ring; 35 - second handle; 40 - sealing plug; 50 - adapter. Detailed implementation manners

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] The following further explains and illustrates the present utility model in combination with specific implementation manners.

[0039] As Figure 1-2 shown, a medical material stirring syringe provided in this embodiment includes: an injection cylinder body 10 and a pushing composite part. The pushing composite part is arranged on the injection cylinder body 10 in a liftable and rotatable manner for stirring and pushing the bone cement in the injection cylinder body 10.

[0040] The pushing composite part is provided with a stirring part 20 and a piston part 30. The stirring part 20 is arranged on the piston part 30 in a liftable and rotatable manner for stirring the bone cement in the injection cylinder body 10.

[0041] The stirring part 20 is provided with a locking part for fastening with the piston part 30 during pushing.

[0042] The setting of the locking part enables the stirring part 20 and the piston part 30 to be quickly fixed to form the pushing composite part to complete the pushing of the bone cement after stirring, avoiding the bone cement from coagulating in a short time and affecting the use effect of the bone cement.

[0043] In this embodiment, the locking member is a locking nut 24. Specifically, during stirring, the locking nut 24 is rotated to move upward away from the piston portion 30 and fixed at a set position, thereby limiting the downward movement position of the stirring portion 20 to prevent the stirring portion 20 from touching the injection cylinder 10 and damaging the injection cylinder 10; during injection, the locking nut 24 is rotated to move downward close to the piston portion 30, and the stirring portion 20 and the piston portion 30 are locked to form an injection composite portion to quickly inject the stirred bone cement.

[0044] As Figures 3-5 shown, the stirring portion 20 is provided with a stirring rod 22 and a plurality of stirring blades 21;

[0045] The stirring blades 21 are uniformly arranged along the circumferential direction of the stirring rod 22 at the lower end of the stirring rod 22;

[0046] The stirring rod 22 penetrates upward and extends out of the piston portion 30, and an external thread is provided on the upper portion of the stirring rod 22 for connection with the locking member.

[0047] In this embodiment, there are 4 stirring blades 21.

[0048] A first handle 23 is fixedly provided at the top of the stirring rod 22 for driving the lifting and rotation of the stirring rod 22.

[0049] As Figure 6 shown, the piston portion 30 is provided with a piston sleeve 32 and an injection piston 31; the injection piston 31 is fixedly provided at the bottom of the piston sleeve 32, and an inner hole communicating with the piston sleeve 32 is provided in the injection piston 31 for the stirring rod 22 to penetrate through.

[0050] A sealing ring 34 is provided on the outer periphery of the injection piston 31 for sealing between the injection piston 31 and the inner wall of the injection cylinder 10.

[0051] An injection cylinder cover 33 is fixedly sleeved on the outer side wall of the top of the piston sleeve 32 for covering the injection cylinder 10, and the injection cylinder cover 33 is arranged in an inverted cylindrical shape.

[0052] As Figure 7 shown, the outer side wall of the injection cylinder 10 is threadedly connected to the inner side wall of the injection cylinder cover 33.

[0053] The threaded connection between the injection cylinder cover 33 and the injection cylinder 10 can, while covering the injection cylinder 10, also drive the injection composite portion to spiral up and down to complete the injection of the bone cement.

[0054] A second handle 35 is provided on the outer side wall of the injection cylinder cover 33 for driving the injection cylinder cover 33 to rotate and lift along the outer wall of the injection cylinder 10 through threaded connection.

[0055] AsFigures 7-8 As shown, an injection nozzle 11 is provided at the bottom of the injection cylinder 10, and the injection nozzle 11 is connected with a sealing plug 40 for plugging the injection nozzle 11 during stirring.

[0056] As Figure 9 shown, it further includes an adapter 50 for connecting the injection nozzle 11 and a push - rod syringe during injection.

[0057] Specifically, during use, the sealing plug 40 is installed on the injection nozzle 11, the pushing and injecting composite part is removed, the solid and liquid phases of the calcium phosphate bone cement are poured into the injection cylinder 10, and then the pushing and injecting composite part is installed on the injection cylinder 10. The locking nut 24 is loosened, and the stirring rod 22 is rotated. The stirring rod 22 drives the stirring blade 21 to lift and rotate in the injection cylinder 10, axially and circumferentially stirring the bone cement in the injection cylinder 10. The piston part 30 can scrape down the bone cement adhering to the inner wall of the injection cylinder 10 due to high viscosity during stirring. At the same time, when the stirring blade 21 approaches the bottom of the injection piston 31, it can also prevent the bone cement from sticking into lumps through rotational friction, further achieving sufficient stirring of the bone cement. After stirring is completed, the stirring part 20 is lifted, the stirring blade 21 is abutted against the injection piston 31, and then the stirring part 20 and the piston part 30 are quickly fixed by the locking nut 24 to form the pushing and injecting composite part. The sealing plug 40 is removed, the injection nozzle 11 and the push - rod bone cement syringe are connected through the adapter 50 to the bone defect site, and the second handle 35 is rotated to drive the injection cylinder cover 33 to screw - advance, thereby driving the pushing and injecting composite part to push down the stirred bone cement for injection.

[0058] A medical material stirring syringe provided by the present utility model has the following advantages:

[0059] 1. Through the setting of the pushing and injecting composite part, during stirring, the stirring part and the piston part are separated, continuously and sufficiently stirring the bone cement in the injection cylinder, greatly improving the stirring efficiency of high - viscosity bone cement; when injecting after stirring is completed, the stirring part and the piston part are quickly fixed and combined into one to inject the bone cement, which not only reduces the risk of contamination caused by bone cement transfer but also shortens the bone cement injection time, solving the problem that the rapid setting of bone cement affects the use effect.

[0060] 2. The overall structure of this device is simply designed, with efficient and convenient operation, and is suitable for related surgical procedures using bone cement clinically.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical material stirring syringe, characterized in that, Comprising: An injection cylinder body and a bolus compounding part, the bolus compounding part being arranged on the injection cylinder body in a liftable and rotatable manner for stirring and bolusing the injection material in the injection cylinder body; The bolus compounding part is provided with a stirring part and a piston part, the stirring part being arranged on the piston part in a liftable and rotatable manner for stirring the injection material in the injection cylinder body; The stirring part is provided with a locking part for fastening with the piston part during bolusing.

2. The medical material stirring syringe according to claim 1, characterized in that, The stirring part is provided with a stirring rod and a plurality of stirring blades; The stirring blades are uniformly arranged along the circumferential direction of the stirring rod at the lower end of the stirring rod; The stirring rod penetrates upward and extends out of the piston part, and an external thread is arranged on the upper part of the stirring rod for connection with the locking part.

3. The medical material stirring syringe according to claim 2, characterized in that, A first handle is fixedly arranged at the top of the stirring rod for driving the lifting and rotation of the stirring rod.

4. The medical material stirring syringe according to claim 2, characterized in that, The piston part is provided with a piston sleeve and an injection piston; the injection piston is fixedly arranged at the bottom of the piston sleeve, and the injection piston is provided with an inner hole communicating with the piston sleeve for the stirring rod to penetrate through.

5. The medical material stirring syringe according to claim 4, characterized in that, A sealing ring is arranged on the outer periphery of the injection piston for sealing between the injection piston and the inner wall of the injection cylinder body.

6. The medical material stirring syringe according to claim 4, wherein An injection cylinder cover is fixedly sleeved on the outer side wall of the top of the piston sleeve for covering the injection cylinder body, and the injection cylinder cover is arranged in an inverted cylindrical shape.

7. The medical material stirring syringe according to claim 6, characterized in that, The outer side wall of the injection cylinder body is threadedly connected with the inner side wall of the injection cylinder cover.

8. The medical material stirring syringe according to claim 6, characterized in that, A second handle is arranged on the outer side wall of the injection cylinder cover for driving the injection cylinder cover to rotate and lift along the outer wall of the injection cylinder body through threaded connection.

9. The medical material stirring syringe according to claim 1, wherein, An injection nozzle is arranged at the bottom of the injection cylinder body, and the injection nozzle is connected with a sealing plug for plugging the injection nozzle.

10. The medical material stirring syringe according to claim 9, characterized in that, It further includes a conversion joint for connecting the injection nozzle and a push - rod syringe during injection.

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