CN213787726U

CN213787726U - Novel transpedicular centrum bone grafting funnel

Info

Publication number: CN213787726U
Application number: CN202022753189.5U
Authority: CN
Inventors: 郭云山; 杨小卫; 贺欣; 王晓东; 郝定均
Original assignee: Xian Honghui Hospital
Current assignee: Xian Honghui Hospital
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-27
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a novel transpedicular centrum bone grafting funnel, which comprises a funnel body and a guide section; the funnel body comprises a cylinder and a bowl-shaped body fixedly communicated with the upper end of the cylinder, and the guide section is fixedly connected with the lower end of the cylinder; the cross section of the guide section is a circular arc, and the upper end of the guide section is connected with the lower end of the funnel body through a deformable connecting section; the device also comprises an adjusting rod; the adjusting rod is connected to the side wall of the cylinder in a sliding mode along the extending direction of the cylinder, the upper end of the adjusting rod penetrates through the bowl-shaped body, the lower end of the adjusting rod is hinged to the guiding section, and the included angle between the guiding section and the cylinder is changed by pushing and pulling the adjusting rod. The utility model discloses increased the function at funnel regulation inclination, further improved the volume of implanting of planting the bone grain, improved the bone fusion effect.

Description

Novel transpedicular centrum bone grafting funnel

Technical Field

The utility model relates to an orthopedic surgery technical field, concretely relates to novel transpedicular centrum implantates bone funnel.

Background

Bone grafting is often needed to the pathological change department in spinal surgery, for example in lumbar fusion, the bone grafting is carried out in the intervertebral through lumbar vertebrae front and back way operation, can make the bony union take place between the lumbar vertebrae like this to rebuild the integrality and the stability of lumbar vertebrae. Because the position of the vertebral body is deep, important nerves, blood vessels and abundant muscles are arranged around the vertebral body, so that the safe bone grafting of the fractured vertebral body can be realized only through a long and narrow vertebral pedicle in an operation in order to avoid the injuries of spinal cords, nerves, peripheral blood vessels and the like in the operation.

The cross section of the pedicle of vertebral arch of thoracic vertebra and lumbar vertebra is similar to an ellipse, and the existing operation method comprises the following steps: the pedicle screws can be implanted, and the funnels penetrate through the screw channels formed by the pedicle screws and penetrate through the screws to introduce bone grafting particles into the vertebral bodies. In order to increase the implantation amount of the bone grafting particles, an arc-shaped guide section is fixedly arranged at the lower end of the funnel, and the bone grafting particles are drawn farther along the guide section. However, the guide section is integrated with the funnel, so that the inclination angle cannot be changed, the number of the bone grafting particles which can be introduced is limited, namely, the bone grafting particles are continuously accumulated at the lower end of the guide section and block the falling bone grafting particles, so that the implantation amount of the bone grafting particles is small, the bone grafting area cannot be further enlarged, and the reason for improving the bone fusion effect is also one of the reasons.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the function of adjusting the inclination angle of the funnel is added, the implantation amount of bone grafting particles is further improved, and the bone fusion effect is improved; the funnel body comprises a cylinder and a bowl-shaped body fixedly communicated with the upper end of the cylinder, and the guide section is fixedly connected with the lower end of the cylinder; the cross section of the guide section is a circular arc, and the upper end of the guide section is connected with the lower end of the funnel body through a deformable connecting section;

the device also comprises an adjusting rod; the adjusting rod is connected to the side wall of the cylinder in a sliding mode along the extending direction of the cylinder, the upper end of the adjusting rod penetrates through the bowl-shaped body, the lower end of the adjusting rod is hinged to the guiding section, and the included angle between the guiding section and the cylinder is changed by pushing and pulling the adjusting rod.

The beneficial effects of the utility model are embodied in:

the lower extreme opening of drum can only be located the edge of centrum, inserts in the centrum with drum and guide section, adjusts the pole through the pulling and in order to reduce the contained angle between guide section and the drum, and the guide section can extend to the centrum edge relative with the drum, and at this moment the bone grafting grain slides down to the centrum edge far away with the drum distance from the bowl form body along drum and guide section. Then the adjusting rod is pushed to increase the included angle between the guiding section and the cylinder, meanwhile, the cylinder is lifted for a certain distance, so that the guiding section extends to the center of the vertebral body, and then the bone grafting particles are thrown in again and distributed in the center of the vertebral body. And finally, the adjusting rod is pushed again to increase the included angle between the guiding section and the cylinder, the cylinder is lifted for a certain distance, and the guiding section guides the bone grafting particles to the position near the lower end of the cylinder. The bone grafting particles are put in according to the method, so that the amount of the bone grafting particles implanted in the vertebral body is greatly increased, the bone grafting area is enlarged, and the recovery probability of a patient is improved.

Preferably, the damping block is fixedly connected to the upper end of the bowl-shaped body, the adjusting rod penetrates through the damping block, and the adjusting rod is in contact with the damping block, so that the torque required by the sliding adjusting rod is increased.

The damping piece conveniently adjusts pole locking current position, adjusts the pole locking back, then the contained angle between guide section and the drum is fixed, can guide the throwing in of bone grafting grain to the assigned position, the convenient bone grafting grain after the contained angle is fixed.

Preferably, the side wall of the cylinder is provided with a plurality of shaft sleeves, the adjusting rod sequentially penetrates through all the shaft sleeves and forms sliding connection with all the shaft sleeves.

The adjusting rod is tightly attached to the outer surface of the cylinder, so that the occupied space is reduced as much as possible, the operating space is provided as much as possible for the operation, and the operation difficulty is reduced.

Preferably, the lower end of the adjusting rod is hinged to the guide section by two connecting rods.

Preferably, the lower ends of the two connecting rods are respectively hinged with the two sides of the guide section, and the upper ends of the two connecting rods are hinged with the lower end of the adjusting rod.

The two connecting rods and the adjusting rod are connected to form an inverted Y-shaped structure, and are hinged to two sides of the guide section through the two connecting rods, so that the guide section is uniformly stressed in the adjusting process, and the adjusting process is free from obstruction.

Preferably, both said connecting rods are located on the outer side of the guide section.

The connecting rod is located behind the outside of guide section, can not block and plant the bone grain, avoids influencing the input gliding of planting the bone grain.

Preferably, the upper end of the connecting section is detachably connected with the lower end of the cylinder, and the lower end of the connecting section is detachably connected with the upper end of the guide section.

Preferably, the upper end face of the connecting section is provided with a notch matched with the lower end of the cylinder, the lower end face of the connecting section is provided with a notch matched with the upper end of the guiding section, and the cylinder and the guiding section are inserted into the corresponding notches of the connecting section, so that the connecting section is detachably connected with the guiding section and the cylinder respectively.

The cross section of the connecting section is arc-shaped, the openings at the upper end and the lower end of the connecting section are also arc-shaped, the cylinder and the guide section can be directly inserted into the notch, and the connection and the disassembly are very convenient.

Preferably, the material of the connecting section is medical grade silica gel.

Preferably, the material of the funnel body and the guiding section is medical grade stainless steel.

Medical grade stainless steel can be through disinfection used repeatedly, and medical grade silica gel is disposable, then avoids appearing safety problems such as infection through the mode of changing.

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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic structural diagram of a connection segment in the present embodiment;

fig. 4 is a perspective view of fig. 3.

In the attached drawing, a cylinder 1, a bowl-shaped body 2, a guide section 3, a connecting section 4, a notch 5, a shaft sleeve 6, a damping block 7, a connecting rod 8 and an adjusting rod 9.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1 and 2, the present embodiment provides a novel transpedicular intravertebral bone grafting funnel, which comprises a funnel body and a guide section 3. The funnel body comprises a cylinder 1 and a bowl-shaped body 2 fixedly communicated with the upper end of the cylinder 1, and the guide section 3 is fixedly connected with the lower end of the cylinder 1; the cross section of the guide section 3 is a circular arc, and the upper end of the guide section 3 is connected with the lower end of the funnel body through a deformable connecting section 4. Wherein, the upper end of the connecting section 4 is detachably connected with the lower end of the cylinder 1, and the lower end of the connecting section 4 is detachably connected with the upper end of the guiding section 3. As shown in fig. 3 and 4, the specific detachable connection manner is as follows: the upper end face of the connecting section 4 is provided with a notch 5 matched with the lower end of the cylinder 1, the lower end face of the connecting section 4 is provided with a notch 5 matched with the upper end of the guide section 3, the connecting section 4 is inserted into the notch 5 corresponding to the connecting section 4 through the cylinder 1 and the guide section 3, and then the connecting section 4 is detachably connected with the guide section 3 and the cylinder 1 respectively. The cross section of the connecting section 4 is arc-shaped, the openings at the upper end and the lower end of the connecting section 4 are also arc-shaped, the cylinder 1 and the guide section 3 can be directly inserted into the gap 5, and the connection and the disassembly are very convenient. In order to meet the requirement of surgical disinfection, the connecting section 4 is made of medical-grade silica gel, and the funnel body and the guide section 3 are made of medical-grade stainless steel. Medical grade stainless steel can be through disinfection used repeatedly, and medical grade silica gel is disposable, then avoids appearing safety problems such as infection through the mode of changing.

The embodiment also comprises an adjusting rod 9; the adjusting rod 9 is slidably connected to the side wall of the cylinder 1 along the extending direction of the cylinder 1, specifically, the side wall of the cylinder 1 is provided with two or more shaft sleeves 6, the adjusting rod 9 sequentially penetrates through all the shaft sleeves 6, and the adjusting rod 9 and all the shaft sleeves 6 form a sliding connection. The adjusting rod 9 is tightly attached to the outer surface of the cylinder 1, so that the occupied space is reduced as much as possible, the operation space is provided as much as possible for the operation, and the operation difficulty is reduced.

The upper end of the adjusting rod 9 penetrates through the bowl-shaped body 2, the lower end of the adjusting rod 9 is hinged with the guiding section 3, and the included angle between the guiding section 3 and the cylinder 1 is changed by pushing and pulling the adjusting rod 9. Specifically, the upper end of the bowl-shaped body 2 is fixedly connected with a damping block 7, the adjusting rod 9 penetrates through the damping block 7, the damping block 7 is made of rubber, a through hole matched with the adjusting rod 9 is formed in the middle of the damping block 7, and the adjusting rod 9 penetrates through the through hole and contacts the adjusting rod 9 with the damping block 7, so that the torque required by the sliding adjusting rod 9 is increased. Damping piece 7 conveniently adjusts pole 9 locking current position, adjusts the pole 9 and locks the back, then the contained angle between guide section 3 and the drum 1 is fixed, can guide the bone grafting grain to the assigned position after the contained angle is fixed, conveniently plants throwing in of bone grafting grain. The lower end of the adjusting rod 9 is hinged with the guide section 3 by two connecting rods 8. Specifically, the lower ends of the two connecting rods 8 are respectively hinged to the two sides of the guide section 3, and the upper ends of the two connecting rods 8 are hinged to the lower end of the adjusting rod 9. The two connecting rods 8 and the adjusting rod 9 are connected to form an inverted Y-shaped structure, and are hinged to two sides of the guide section 3 through the two connecting rods 8, so that the guide section 3 is uniformly stressed in the adjusting process, and the adjusting process is free from obstruction. Two connecting rod 8 all is located the lateral surface of guide section 3, and connecting rod 8 can not block the bone grain of planting behind the outside that is located guide section 3, avoids influencing the input gliding of bone grain of planting.

The existing cylinder 1 and the guide section 3 are fixedly connected, the connecting section 4 is detachably connected in the embodiment, the connecting section 4 can be deformed, the inclination angle of the guide section 3 can be changed by pushing and pulling the adjusting rod 9, bone grafting particles can be put in a designated position after the inclination angle is changed, the bone grafting particle amount implanted in the vertebral body is greatly increased, the bone grafting area is enlarged, and the recovery probability of a patient is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A novel transpedicular centrum bone grafting funnel comprises a funnel body and a guide section; the funnel body comprises a cylinder and a bowl-shaped body fixedly communicated with the upper end of the cylinder, and the guide section is fixedly connected with the lower end of the cylinder; the method is characterized in that: the cross section of the guide section is a circular arc, and the upper end of the guide section is connected with the lower end of the funnel body through a deformable connecting section;

2. The novel transpedicular intravertebral bone-grafting funnel according to claim 1, characterized in that: the upper end of the bowl-shaped body is fixedly connected with the damping block, the adjusting rod penetrates through the damping block, and the adjusting rod is in contact with the damping block, so that the torque required by the sliding adjusting rod is increased.

3. The novel transpedicular intravertebral bone-grafting funnel according to claim 1, characterized in that: the lateral wall of drum is equipped with a plurality of axle sleeves, adjust the pole and pass through all axle sleeves in proper order and adjust the pole and form sliding connection with all axle sleeves.

4. The novel transpedicular intravertebral bone-grafting funnel according to claim 1, characterized in that: the lower end of the adjusting rod is hinged with the guide section through two connecting rods.

5. The novel transpedicular intravertebral bone-grafting funnel according to claim 4, characterized in that: the lower ends of the two connecting rods are hinged with the two sides of the guide section respectively, and the upper ends of the two connecting rods are hinged with the lower end of the adjusting rod.

6. The novel transpedicular intravertebral bone-grafting funnel according to claim 5, characterized in that: and the two connecting rods are positioned on the outer side surface of the guide section.

7. The novel transpedicular intravertebral bone-grafting funnel according to claim 1, characterized in that: the upper end of the connecting section is detachably connected with the lower end of the cylinder, and the lower end of the connecting section is detachably connected with the upper end of the guide section.

8. The novel transpedicular intravertebral bone-grafting funnel of claim 7, wherein: the upper end face of the connecting section is provided with a notch matched with the lower end of the cylinder, the lower end face of the connecting section is provided with a notch matched with the upper end of the guiding section, and the connecting section is inserted into the corresponding notch of the connecting section through the cylinder and the guiding section so as to be detachably connected with the guiding section and the cylinder respectively.

9. The novel transpedicular intravertebral bone-grafting funnel of claim 8, wherein: the connecting section is made of medical silica gel.

10. The novel transpedicular intravertebral bone-grafting funnel according to claim 1, characterized in that: the funnel body and the guide section are made of medical stainless steel.