阅读说明：本技术 一种高精度骨水泥加注器 (High-precision bone cement filler ) 是由 张若夫 徐书荣 于 2020-06-23 设计创作，主要内容包括：本发明公开的一种高精度骨水泥加注器,包括推注筒,推注筒上设筒头和筒套,并内置推注杆,推注杆通过螺纹套杆控制运动,并设推注头,推注头上设搅拌叶片,并连接搅拌杆和搅拌控制杆,本发明设计合理,原理简单,用于骨水泥的加注,可有效、快捷的实现骨水泥抽入和加注的间隔进行,并具备骨水泥搅拌功能,使用方便,可有效保证骨水泥均度,提高骨水泥的凝固效果,且加注精度高,可有效控制骨水泥的加注量。(The invention discloses a high-precision bone cement filler which comprises a push injection cylinder, wherein a cylinder head and a cylinder sleeve are arranged on the push injection cylinder, a push injection rod is arranged in the push injection cylinder, the push injection rod is controlled to move through a threaded sleeve rod, a push injection head is arranged, a stirring blade is arranged on the push injection head and connected with a stirring rod and a stirring control rod.)

1. A high-precision bone cement injector comprises an injection cylinder and is characterized in that a cylinder head and a cylinder sleeve are respectively arranged at two ends of the injection cylinder, an injection rod is arranged in the injection cylinder, the cylinder head and the cylinder sleeve are respectively in threaded connection with two ends of the injection cylinder, a plurality of guide convex strips are arranged on the inner wall of the injection cylinder, the injection rod is communicated in the axial direction, a plurality of guide grooves are arranged on the outer wall of the injection rod and are correspondingly matched with the guide convex strips, and the injection rod is arranged in the injection cylinder in a sliding manner through the guide grooves and the guide convex strips;

the middle through injection rod is internally provided with a first sealing bearing and a first internal thread, the end part of the middle through injection rod is provided with an injection head and a sealing ring, the sealing ring is tightly attached to the inner wall of the injection cylinder and is deformed and sealed, the injection head is provided with a stirring blade and is fixedly connected with a stirring rod, the cylinder sleeve is rotatably connected with a threaded sleeve rod through a second bearing, the threaded sleeve rod passes through the middle through rod along the axial direction, one end of the threaded sleeve rod is positioned outside the injection cylinder, the other end of the threaded sleeve rod extends into the injection cylinder and is provided with a first external thread, the threaded sleeve rod is in threaded connection with the injection rod through the first external thread and the second external thread, the stirring rod is arranged in the injection rod, one end of the stirring rod is fixedly connected with the injection head and is connected with the first sealing bearing to realize the rotary connection with the injection rod, the other end of the stirring rod extends into the threaded sleeve rod and is in clearance fit with the threaded, and is connected with a stirring control rod, one end of the stirring control rod is connected with a push-pull handle, the other end of the stirring control rod penetrates through the barrel sleeve and extends into the threaded sleeve rod, and is provided with a second external thread, the stirring control rod is in threaded connection with the stirring rod through the second external thread and the second internal thread, and the stirring control rod is in clearance fit with the threaded sleeve rod through a third shaft sleeve.

2. The high-precision bone cement injector according to claim 1, characterized in that the injection head is conical, the number of the stirring blades is a plurality of stirring blades which are circumferentially and uniformly distributed and are arranged on the conical outer wall of the injection head.

3. A high accuracy bone cement filler as defined in claim 2 wherein a rotation knob is fixedly attached to said threaded sleeve rod for controlling rotation of said threaded sleeve rod.

4. The high-precision bone cement injector according to claim 2, characterized in that a handle is fixedly arranged at the end of the injection cylinder, a transmission gear is fixedly connected to the threaded sleeve rod, a motor, a storage battery, a speed reducer and a control switch are arranged on the handle, the motor, the storage battery and the speed reducer are fixedly arranged in the handle, and the control switch is arranged outside the handle;

an output shaft of the motor is in transmission connection with an input shaft of the speed reducer, and an output shaft of the speed reducer is meshed with the transmission gear through a gear;

the storage battery, the control switch and the motor are electrically connected, and the control switch controls the motor to be switched on and off, and the forward and reverse rotation and the rotation speed of the motor are controlled by the control switch.

5. The high accuracy bone cement injector of claim 4, characterized in that said bolus barrel is externally provided with an anti-slip sheath for easy gripping.

6. The high accuracy bone cement filler according to claim 5, wherein the bolus barrel is externally provided with scale markings.

7. A high accuracy bone cement filler according to claim 6 wherein said barrel head includes two nozzles, a bolus outlet for a bolus of bone cement and a cement inlet for replenishing the bone cement.

8. A high precision bone cement injector as in claim 7, characterized in that said bolus outlet port and said cement inlet port are provided with non-return diaphragms, respectively a first non-return diaphragm and a second non-return diaphragm, said first non-return diaphragm allowing no inlet and said second non-inlet.

9. A high accuracy bone cement injector as defined in claim 8, wherein said bolus outlet port and said cement inlet port are provided with projecting snap rings for snap fitting the hoses.

10. A high accuracy bone cement filler according to claim 9, characterized in that it operates as follows:

(1) prefabricating bone cement, respectively connecting a hose to the injection outlet and the cement inlet, simultaneously starting a control switch, starting a motor, driving a threaded sleeve rod to rotate through a speed reducer and a transmission gear, and forcing an injection cylinder to move to the cylinder head until the injection head enters the cylinder head;

(2) when the injection head reaches the position of the barrel head, the control switch is started again to enable the threaded sleeve rod to rotate reversely, so that the injection barrel is forced to pump the bone cement, at the moment, the first non-return diaphragm is closed, the second non-return diaphragm is opened, and the bone cement is pumped into the injection barrel from the cement inlet;

(3) when the bone cement is pumped in, in order to ensure the mixing uniformity of the bone cement, the push-pull handle is pushed and pulled in a reciprocating manner, so that the stirring control rod makes a linear reciprocating motion, the stirring rod is driven to rotate in a reciprocating manner, and the injection head is driven to rotate in a reciprocating manner, so that the stirring blade is used for stirring the bone cement;

(4) treat that bone cement stirring is accomplished, can carry out bone cement and inject, start control switch, the injection section of thick bamboo that controls once more removes to the barrel head position, and at this moment, first contrary diaphragm that ends is opened, the second is ended the diaphragm closure that ends, and bone cement is from injecting the export and injecting and go out, and simultaneously, motor speed accessible control switch adjusts, reduces motor speed, can reduce bone cement's the speed of injecting, guarantees that bone cement injects the precision.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a high-precision bone cement filler.

Background

Bone cement is a common name of bone cement, is a medical material used for orthopedic surgery, and is mainly used for artificial joint replacement surgery.

When bone cement uses, instruments such as injector (filler) are often used to inject, bone cement often need to be adorned promptly and used, can not stand for a long time, otherwise, its mixture uniformity can receive the influence, lead to bone cement solidification effect not good, its leading cause lies in, after bone cement adds the injector, can't mix the stirring and lead to, moreover, injector commonly used adopts manual extrusion to inject more, its filling precision is relatively poor, bone cement's filling volume is uncontrollable, it is higher to medical personnel's experience requirement.

Disclosure of Invention

The invention aims at the problems and discloses a high-precision bone cement filler.

The specific technical scheme is as follows:

a high-precision bone cement injector comprises an injection cylinder and is characterized in that a cylinder head and a cylinder sleeve are respectively arranged at two ends of the injection cylinder, an injection rod is arranged in the injection cylinder, the cylinder head and the cylinder sleeve are respectively in threaded connection with two ends of the injection cylinder, a plurality of guide convex strips are arranged on the inner wall of the injection cylinder, the injection rod is communicated in the axial direction, a plurality of guide grooves are arranged on the outer wall of the injection rod and are correspondingly matched with the guide convex strips, and the injection rod is arranged in the injection cylinder in a sliding manner through the guide grooves and the guide convex strips;

the middle through injection rod is internally provided with a first sealing bearing and a first internal thread, the end part of the middle through injection rod is provided with an injection head and a sealing ring, the sealing ring is tightly attached to the inner wall of the injection cylinder and is deformed and sealed, the injection head is provided with a stirring blade and is fixedly connected with a stirring rod, the cylinder sleeve is rotatably connected with a threaded sleeve rod through a second bearing, the threaded sleeve rod passes through the middle through rod along the axial direction, one end of the threaded sleeve rod is positioned outside the injection cylinder, the other end of the threaded sleeve rod extends into the injection cylinder and is provided with a first external thread, the threaded sleeve rod is in threaded connection with the injection rod through the first external thread and the second external thread, the stirring rod is arranged in the injection rod, one end of the stirring rod is fixedly connected with the injection head and is connected with the first sealing bearing to realize the rotary connection with the injection rod, the other end of the stirring rod extends into the threaded sleeve rod and is in clearance fit with the threaded, and is connected with a stirring control rod, one end of the stirring control rod is connected with a push-pull handle, the other end of the stirring control rod penetrates through the barrel sleeve and extends into the threaded sleeve rod, and is provided with a second external thread, the stirring control rod is in threaded connection with the stirring rod through the second external thread and the second internal thread, and the stirring control rod is in clearance fit with the threaded sleeve rod through a third shaft sleeve.

The high-precision bone cement filler is characterized in that the injection head is conical, the stirring blades are arranged on the outer wall of the conical injection head, the number of the stirring blades is multiple, and the stirring blades are uniformly distributed in the circumferential direction.

The high-precision bone cement filler is characterized in that the threaded sleeve rod is fixedly connected with a rotating handle for controlling the threaded sleeve rod to rotate.

The high-precision bone cement filler is characterized in that the tail end of the injection cylinder is fixedly provided with a handle, the threaded sleeve rod is fixedly connected with a transmission gear, the handle is provided with a motor, a storage battery, a speed reducer and a control switch, the motor, the storage battery and the speed reducer are fixedly arranged in the handle, and the control switch is arranged outside the handle;

an output shaft of the motor is in transmission connection with an input shaft of the speed reducer, and an output shaft of the speed reducer is meshed with the transmission gear through a gear;

the storage battery, the control switch and the motor are electrically connected, and the control switch controls the motor to be switched on and off, and the forward and reverse rotation and the rotation speed of the motor are controlled by the control switch.

The high-precision bone cement injector is characterized in that an anti-slip sleeve which is convenient to hold is arranged outside the injection cylinder.

The high-precision bone cement injector is characterized in that a scale mark is arranged outside the injection cylinder.

The high-precision bone cement filler comprises a barrel head, wherein the barrel head comprises two pipe orifices, and the two pipe orifices are respectively a push injection outlet for pushing bone cement and a cement inlet for supplementing the bone cement.

In the above high-precision bone cement injector, the injection outlet and the cement inlet outlet are both provided with a non-return diaphragm, which is a first non-return diaphragm and a second non-return diaphragm, respectively, the first non-return diaphragm allows the injection to be not allowed, and the second non-return diaphragm allows the injection to be not allowed.

The high-precision bone cement filler is characterized in that the injection outlet and the cement inlet are respectively provided with a convex clamping ring for clamping a hose.

The high-precision bone cement filler comprises the following working methods:

(1) prefabricating bone cement, respectively connecting a hose to the injection outlet and the cement inlet, simultaneously starting a control switch, starting a motor, driving a threaded sleeve rod to rotate through a speed reducer and a transmission gear, and forcing an injection cylinder to move to the cylinder head until the injection head enters the cylinder head;

(2) when the injection head reaches the position of the barrel head, the control switch is started again to enable the threaded sleeve rod to rotate reversely, so that the injection barrel is forced to pump the bone cement, at the moment, the first non-return diaphragm is closed, the second non-return diaphragm is opened, and the bone cement is pumped into the injection barrel from the cement inlet;

(3) when the bone cement is pumped in, in order to ensure the mixing uniformity of the bone cement, the push-pull handle is pushed and pulled in a reciprocating manner, so that the stirring control rod makes a linear reciprocating motion, the stirring rod is driven to rotate in a reciprocating manner, and the injection head is driven to rotate in a reciprocating manner, so that the stirring blade is used for stirring the bone cement;

(4) treat that bone cement stirring is accomplished, can carry out bone cement and inject, start control switch, the injection section of thick bamboo that controls once more removes to the barrel head position, and at this moment, first contrary diaphragm that ends is opened, the second is ended the diaphragm closure that ends, and bone cement is from injecting the export and injecting and go out, and simultaneously, motor speed accessible control switch adjusts, reduces motor speed, can reduce bone cement's the speed of injecting, guarantees that bone cement injects the precision.

The invention has the beneficial effects that:

the invention discloses a high-precision bone cement filler which comprises a push injection cylinder, wherein a cylinder head and a cylinder sleeve are arranged on the push injection cylinder, a push injection rod is arranged in the push injection cylinder, the push injection rod is controlled to move through a threaded sleeve rod, a push injection head is arranged, a stirring blade is arranged on the push injection head and connected with a stirring rod and a stirring control rod.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged cross-section of the threaded shank region.

FIG. 4 is a diagram illustrating a second embodiment of the present invention.

FIG. 5 is a schematic view of the third embodiment of the present invention.

FIG. 6 is a cross-sectional view of the grip according to the second embodiment.

FIG. 7 is a schematic view of a cartridge head according to the third embodiment.

FIG. 8 is a sectional view of the cartridge head according to the third embodiment.

Detailed Description

In order to make the technical solution of the present invention clearer and clearer, the present invention is further described below with reference to embodiments, and any solution obtained by substituting technical features of the technical solution of the present invention with equivalents and performing conventional reasoning falls within the scope of the present invention.